ql4_os.c 283.2 KB
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/*
 * QLogic iSCSI HBA Driver
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 * Copyright (c)  2003-2013 QLogic Corporation
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 *
 * See LICENSE.qla4xxx for copyright and licensing details.
 */
#include <linux/moduleparam.h>
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#include <linux/slab.h>
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#include <linux/blkdev.h>
#include <linux/iscsi_boot_sysfs.h>
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#include <linux/inet.h>
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#include <scsi/scsi_tcq.h>
#include <scsi/scsicam.h>

#include "ql4_def.h"
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#include "ql4_version.h"
#include "ql4_glbl.h"
#include "ql4_dbg.h"
#include "ql4_inline.h"
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#include "ql4_83xx.h"
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/*
 * Driver version
 */
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static char qla4xxx_version_str[40];
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/*
 * SRB allocation cache
 */
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static struct kmem_cache *srb_cachep;
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/*
 * Module parameter information and variables
 */
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static int ql4xdisablesysfsboot = 1;
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module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xdisablesysfsboot,
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		 " Set to disable exporting boot targets to sysfs.\n"
		 "\t\t  0 - Export boot targets\n"
		 "\t\t  1 - Do not export boot targets (Default)");
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int ql4xdontresethba;
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module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(ql4xdontresethba,
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		 " Don't reset the HBA for driver recovery.\n"
		 "\t\t  0 - It will reset HBA (Default)\n"
		 "\t\t  1 - It will NOT reset HBA");
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int ql4xextended_error_logging;
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module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(ql4xextended_error_logging,
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		 " Option to enable extended error logging.\n"
		 "\t\t  0 - no logging (Default)\n"
		 "\t\t  2 - debug logging");
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int ql4xenablemsix = 1;
module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql4xenablemsix,
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		 " Set to enable MSI or MSI-X interrupt mechanism.\n"
		 "\t\t  0 = enable INTx interrupt mechanism.\n"
		 "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
		 "\t\t  2 = enable MSI interrupt mechanism.");
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#define QL4_DEF_QDEPTH 32
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static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xmaxqdepth,
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		 " Maximum queue depth to report for target devices.\n"
		 "\t\t  Default: 32.");
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static int ql4xqfulltracking = 1;
module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xqfulltracking,
		 " Enable or disable dynamic tracking and adjustment of\n"
		 "\t\t scsi device queue depth.\n"
		 "\t\t  0 - Disable.\n"
		 "\t\t  1 - Enable. (Default)");

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static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
MODULE_PARM_DESC(ql4xsess_recovery_tmo,
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		" Target Session Recovery Timeout.\n"
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		"\t\t  Default: 120 sec.");
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int ql4xmdcapmask = 0;
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module_param(ql4xmdcapmask, int, S_IRUGO);
MODULE_PARM_DESC(ql4xmdcapmask,
		 " Set the Minidump driver capture mask level.\n"
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		 "\t\t  Default is 0 (firmware default capture mask)\n"
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		 "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF");
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int ql4xenablemd = 1;
module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ql4xenablemd,
		 " Set to enable minidump.\n"
		 "\t\t  0 - disable minidump\n"
		 "\t\t  1 - enable minidump (Default)");

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static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
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/*
 * SCSI host template entry points
 */
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static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
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/*
 * iSCSI template entry points
 */
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static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
				     enum iscsi_param param, char *buf);
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static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
				  enum iscsi_param param, char *buf);
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static int qla4xxx_host_get_param(struct Scsi_Host *shost,
				  enum iscsi_host_param param, char *buf);
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static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
				   uint32_t len);
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static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
				   enum iscsi_param_type param_type,
				   int param, char *buf);
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static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
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static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
						 struct sockaddr *dst_addr,
						 int non_blocking);
static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
				enum iscsi_param param, char *buf);
static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
static struct iscsi_cls_conn *
qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
			     struct iscsi_cls_conn *cls_conn,
			     uint64_t transport_fd, int is_leading);
static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
static struct iscsi_cls_session *
qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
			uint16_t qdepth, uint32_t initial_cmdsn);
static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
static void qla4xxx_task_work(struct work_struct *wdata);
static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
static int qla4xxx_task_xmit(struct iscsi_task *);
static void qla4xxx_task_cleanup(struct iscsi_task *);
static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
				   struct iscsi_stats *stats);
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static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
			     uint32_t iface_type, uint32_t payload_size,
			     uint32_t pid, struct sockaddr *dst_addr);
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static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
				 uint32_t *num_entries, char *buf);
static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
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static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
				  int len);
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static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);
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/*
 * SCSI host template entry points
 */
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static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
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static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
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static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
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static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
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static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
static int qla4xxx_slave_alloc(struct scsi_device *device);
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static umode_t qla4_attr_is_visible(int param_type, int param);
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static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
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/*
 * iSCSI Flash DDB sysfs entry points
 */
static int
qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
			    struct iscsi_bus_flash_conn *fnode_conn,
			    void *data, int len);
static int
qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
			    int param, char *buf);
static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
				 int len);
static int
qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
				   struct iscsi_bus_flash_conn *fnode_conn);
static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
				    struct iscsi_bus_flash_conn *fnode_conn);
static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);

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static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
    QLA82XX_LEGACY_INTR_CONFIG;

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static struct scsi_host_template qla4xxx_driver_template = {
	.module			= THIS_MODULE,
	.name			= DRIVER_NAME,
	.proc_name		= DRIVER_NAME,
	.queuecommand		= qla4xxx_queuecommand,

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	.eh_abort_handler	= qla4xxx_eh_abort,
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	.eh_device_reset_handler = qla4xxx_eh_device_reset,
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	.eh_target_reset_handler = qla4xxx_eh_target_reset,
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	.eh_host_reset_handler	= qla4xxx_eh_host_reset,
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	.eh_timed_out		= qla4xxx_eh_cmd_timed_out,
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	.slave_alloc		= qla4xxx_slave_alloc,
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	.change_queue_depth	= scsi_change_queue_depth,
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	.this_id		= -1,
	.cmd_per_lun		= 3,
	.use_clustering		= ENABLE_CLUSTERING,
	.sg_tablesize		= SG_ALL,

	.max_sectors		= 0xFFFF,
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	.shost_attrs		= qla4xxx_host_attrs,
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	.host_reset		= qla4xxx_host_reset,
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	.vendor_id		= SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
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};

static struct iscsi_transport qla4xxx_iscsi_transport = {
	.owner			= THIS_MODULE,
	.name			= DRIVER_NAME,
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	.caps			= CAP_TEXT_NEGO |
				  CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
				  CAP_DATADGST | CAP_LOGIN_OFFLOAD |
				  CAP_MULTI_R2T,
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	.attr_is_visible	= qla4_attr_is_visible,
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	.create_session         = qla4xxx_session_create,
	.destroy_session        = qla4xxx_session_destroy,
	.start_conn             = qla4xxx_conn_start,
	.create_conn            = qla4xxx_conn_create,
	.bind_conn              = qla4xxx_conn_bind,
	.stop_conn              = iscsi_conn_stop,
	.destroy_conn           = qla4xxx_conn_destroy,
	.set_param              = iscsi_set_param,
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	.get_conn_param		= qla4xxx_conn_get_param,
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	.get_session_param	= qla4xxx_session_get_param,
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	.get_ep_param           = qla4xxx_get_ep_param,
	.ep_connect		= qla4xxx_ep_connect,
	.ep_poll		= qla4xxx_ep_poll,
	.ep_disconnect		= qla4xxx_ep_disconnect,
	.get_stats		= qla4xxx_conn_get_stats,
	.send_pdu		= iscsi_conn_send_pdu,
	.xmit_task		= qla4xxx_task_xmit,
	.cleanup_task		= qla4xxx_task_cleanup,
	.alloc_pdu		= qla4xxx_alloc_pdu,

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	.get_host_param		= qla4xxx_host_get_param,
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	.set_iface_param	= qla4xxx_iface_set_param,
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	.get_iface_param	= qla4xxx_get_iface_param,
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	.bsg_request		= qla4xxx_bsg_request,
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	.send_ping		= qla4xxx_send_ping,
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	.get_chap		= qla4xxx_get_chap_list,
	.delete_chap		= qla4xxx_delete_chap,
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	.set_chap		= qla4xxx_set_chap_entry,
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	.get_flashnode_param	= qla4xxx_sysfs_ddb_get_param,
	.set_flashnode_param	= qla4xxx_sysfs_ddb_set_param,
	.new_flashnode		= qla4xxx_sysfs_ddb_add,
	.del_flashnode		= qla4xxx_sysfs_ddb_delete,
	.login_flashnode	= qla4xxx_sysfs_ddb_login,
	.logout_flashnode	= qla4xxx_sysfs_ddb_logout,
	.logout_flashnode_sid	= qla4xxx_sysfs_ddb_logout_sid,
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	.get_host_stats		= qla4xxx_get_host_stats,
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};

static struct scsi_transport_template *qla4xxx_scsi_transport;

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static int qla4xxx_isp_check_reg(struct scsi_qla_host *ha)
{
	u32 reg_val = 0;
	int rval = QLA_SUCCESS;

	if (is_qla8022(ha))
		reg_val = readl(&ha->qla4_82xx_reg->host_status);
	else if (is_qla8032(ha) || is_qla8042(ha))
		reg_val = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_ALIVE_COUNTER);
	else
		reg_val = readw(&ha->reg->ctrl_status);

	if (reg_val == QL4_ISP_REG_DISCONNECT)
		rval = QLA_ERROR;

	return rval;
}

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static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
			     uint32_t iface_type, uint32_t payload_size,
			     uint32_t pid, struct sockaddr *dst_addr)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct sockaddr_in *addr;
	struct sockaddr_in6 *addr6;
	uint32_t options = 0;
	uint8_t ipaddr[IPv6_ADDR_LEN];
	int rval;

	memset(ipaddr, 0, IPv6_ADDR_LEN);
	/* IPv4 to IPv4 */
	if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
	    (dst_addr->sa_family == AF_INET)) {
		addr = (struct sockaddr_in *)dst_addr;
		memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
				  "dest: %pI4\n", __func__,
				  &ha->ip_config.ip_address, ipaddr));
		rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
					 ipaddr);
		if (rval)
			rval = -EINVAL;
	} else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
		   (dst_addr->sa_family == AF_INET6)) {
		/* IPv6 to IPv6 */
		addr6 = (struct sockaddr_in6 *)dst_addr;
		memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);

		options |= PING_IPV6_PROTOCOL_ENABLE;

		/* Ping using LinkLocal address */
		if ((iface_num == 0) || (iface_num == 1)) {
			DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
					  "src: %pI6 dest: %pI6\n", __func__,
					  &ha->ip_config.ipv6_link_local_addr,
					  ipaddr));
			options |= PING_IPV6_LINKLOCAL_ADDR;
			rval = qla4xxx_ping_iocb(ha, options, payload_size,
						 pid, ipaddr);
		} else {
			ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
				   "not supported\n", __func__, iface_num);
			rval = -ENOSYS;
			goto exit_send_ping;
		}

		/*
		 * If ping using LinkLocal address fails, try ping using
		 * IPv6 address
		 */
		if (rval != QLA_SUCCESS) {
			options &= ~PING_IPV6_LINKLOCAL_ADDR;
			if (iface_num == 0) {
				options |= PING_IPV6_ADDR0;
				DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
						  "Ping src: %pI6 "
						  "dest: %pI6\n", __func__,
						  &ha->ip_config.ipv6_addr0,
						  ipaddr));
			} else if (iface_num == 1) {
				options |= PING_IPV6_ADDR1;
				DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
						  "Ping src: %pI6 "
						  "dest: %pI6\n", __func__,
						  &ha->ip_config.ipv6_addr1,
						  ipaddr));
			}
			rval = qla4xxx_ping_iocb(ha, options, payload_size,
						 pid, ipaddr);
			if (rval)
				rval = -EINVAL;
		}
	} else
		rval = -ENOSYS;
exit_send_ping:
	return rval;
}

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static umode_t qla4_attr_is_visible(int param_type, int param)
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{
	switch (param_type) {
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	case ISCSI_HOST_PARAM:
		switch (param) {
		case ISCSI_HOST_PARAM_HWADDRESS:
		case ISCSI_HOST_PARAM_IPADDRESS:
		case ISCSI_HOST_PARAM_INITIATOR_NAME:
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		case ISCSI_HOST_PARAM_PORT_STATE:
		case ISCSI_HOST_PARAM_PORT_SPEED:
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			return S_IRUGO;
		default:
			return 0;
		}
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	case ISCSI_PARAM:
		switch (param) {
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		case ISCSI_PARAM_PERSISTENT_ADDRESS:
		case ISCSI_PARAM_PERSISTENT_PORT:
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		case ISCSI_PARAM_CONN_ADDRESS:
		case ISCSI_PARAM_CONN_PORT:
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		case ISCSI_PARAM_TARGET_NAME:
		case ISCSI_PARAM_TPGT:
		case ISCSI_PARAM_TARGET_ALIAS:
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		case ISCSI_PARAM_MAX_BURST:
		case ISCSI_PARAM_MAX_R2T:
		case ISCSI_PARAM_FIRST_BURST:
		case ISCSI_PARAM_MAX_RECV_DLENGTH:
		case ISCSI_PARAM_MAX_XMIT_DLENGTH:
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		case ISCSI_PARAM_IFACE_NAME:
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		case ISCSI_PARAM_CHAP_OUT_IDX:
		case ISCSI_PARAM_CHAP_IN_IDX:
		case ISCSI_PARAM_USERNAME:
		case ISCSI_PARAM_PASSWORD:
		case ISCSI_PARAM_USERNAME_IN:
		case ISCSI_PARAM_PASSWORD_IN:
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		case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
		case ISCSI_PARAM_DISCOVERY_SESS:
		case ISCSI_PARAM_PORTAL_TYPE:
		case ISCSI_PARAM_CHAP_AUTH_EN:
		case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
		case ISCSI_PARAM_BIDI_CHAP_EN:
		case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
		case ISCSI_PARAM_DEF_TIME2WAIT:
		case ISCSI_PARAM_DEF_TIME2RETAIN:
		case ISCSI_PARAM_HDRDGST_EN:
		case ISCSI_PARAM_DATADGST_EN:
		case ISCSI_PARAM_INITIAL_R2T_EN:
		case ISCSI_PARAM_IMM_DATA_EN:
		case ISCSI_PARAM_PDU_INORDER_EN:
		case ISCSI_PARAM_DATASEQ_INORDER_EN:
		case ISCSI_PARAM_MAX_SEGMENT_SIZE:
		case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
		case ISCSI_PARAM_TCP_WSF_DISABLE:
		case ISCSI_PARAM_TCP_NAGLE_DISABLE:
		case ISCSI_PARAM_TCP_TIMER_SCALE:
		case ISCSI_PARAM_TCP_TIMESTAMP_EN:
		case ISCSI_PARAM_TCP_XMIT_WSF:
		case ISCSI_PARAM_TCP_RECV_WSF:
		case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
		case ISCSI_PARAM_IPV4_TOS:
		case ISCSI_PARAM_IPV6_TC:
		case ISCSI_PARAM_IPV6_FLOW_LABEL:
		case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
		case ISCSI_PARAM_KEEPALIVE_TMO:
		case ISCSI_PARAM_LOCAL_PORT:
		case ISCSI_PARAM_ISID:
		case ISCSI_PARAM_TSID:
		case ISCSI_PARAM_DEF_TASKMGMT_TMO:
		case ISCSI_PARAM_ERL:
		case ISCSI_PARAM_STATSN:
		case ISCSI_PARAM_EXP_STATSN:
		case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
		case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
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		case ISCSI_PARAM_LOCAL_IPADDR:
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			return S_IRUGO;
		default:
			return 0;
		}
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	case ISCSI_NET_PARAM:
		switch (param) {
		case ISCSI_NET_PARAM_IPV4_ADDR:
		case ISCSI_NET_PARAM_IPV4_SUBNET:
		case ISCSI_NET_PARAM_IPV4_GW:
		case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
		case ISCSI_NET_PARAM_IFACE_ENABLE:
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
		case ISCSI_NET_PARAM_IPV6_ADDR:
		case ISCSI_NET_PARAM_IPV6_ROUTER:
		case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
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		case ISCSI_NET_PARAM_VLAN_ID:
		case ISCSI_NET_PARAM_VLAN_PRIORITY:
		case ISCSI_NET_PARAM_VLAN_ENABLED:
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		case ISCSI_NET_PARAM_MTU:
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		case ISCSI_NET_PARAM_PORT:
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		case ISCSI_NET_PARAM_IPADDR_STATE:
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
		case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
		case ISCSI_NET_PARAM_DELAYED_ACK_EN:
		case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
		case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
		case ISCSI_NET_PARAM_TCP_WSF:
		case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
		case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
		case ISCSI_NET_PARAM_CACHE_ID:
		case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
		case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
		case ISCSI_NET_PARAM_IPV4_TOS_EN:
		case ISCSI_NET_PARAM_IPV4_TOS:
		case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
		case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
		case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
		case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
		case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
		case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
		case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
		case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
		case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
		case ISCSI_NET_PARAM_REDIRECT_EN:
		case ISCSI_NET_PARAM_IPV4_TTL:
		case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
		case ISCSI_NET_PARAM_IPV6_MLD_EN:
		case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
		case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
		case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
		case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
		case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
		case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
		case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
		case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
			return S_IRUGO;
		default:
			return 0;
		}
	case ISCSI_IFACE_PARAM:
		switch (param) {
		case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
		case ISCSI_IFACE_PARAM_HDRDGST_EN:
		case ISCSI_IFACE_PARAM_DATADGST_EN:
		case ISCSI_IFACE_PARAM_IMM_DATA_EN:
		case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
		case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
		case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
		case ISCSI_IFACE_PARAM_ERL:
		case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
		case ISCSI_IFACE_PARAM_FIRST_BURST:
		case ISCSI_IFACE_PARAM_MAX_R2T:
		case ISCSI_IFACE_PARAM_MAX_BURST:
		case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
		case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
		case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
		case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
		case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
		case ISCSI_IFACE_PARAM_INITIATOR_NAME:
517 518 519 520
			return S_IRUGO;
		default:
			return 0;
		}
521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582
	case ISCSI_FLASHNODE_PARAM:
		switch (param) {
		case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
		case ISCSI_FLASHNODE_PORTAL_TYPE:
		case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
		case ISCSI_FLASHNODE_DISCOVERY_SESS:
		case ISCSI_FLASHNODE_ENTRY_EN:
		case ISCSI_FLASHNODE_HDR_DGST_EN:
		case ISCSI_FLASHNODE_DATA_DGST_EN:
		case ISCSI_FLASHNODE_IMM_DATA_EN:
		case ISCSI_FLASHNODE_INITIAL_R2T_EN:
		case ISCSI_FLASHNODE_DATASEQ_INORDER:
		case ISCSI_FLASHNODE_PDU_INORDER:
		case ISCSI_FLASHNODE_CHAP_AUTH_EN:
		case ISCSI_FLASHNODE_SNACK_REQ_EN:
		case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
		case ISCSI_FLASHNODE_BIDI_CHAP_EN:
		case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
		case ISCSI_FLASHNODE_ERL:
		case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
		case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
		case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
		case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
		case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
		case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
		case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
		case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
		case ISCSI_FLASHNODE_FIRST_BURST:
		case ISCSI_FLASHNODE_DEF_TIME2WAIT:
		case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
		case ISCSI_FLASHNODE_MAX_R2T:
		case ISCSI_FLASHNODE_KEEPALIVE_TMO:
		case ISCSI_FLASHNODE_ISID:
		case ISCSI_FLASHNODE_TSID:
		case ISCSI_FLASHNODE_PORT:
		case ISCSI_FLASHNODE_MAX_BURST:
		case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
		case ISCSI_FLASHNODE_IPADDR:
		case ISCSI_FLASHNODE_ALIAS:
		case ISCSI_FLASHNODE_REDIRECT_IPADDR:
		case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
		case ISCSI_FLASHNODE_LOCAL_PORT:
		case ISCSI_FLASHNODE_IPV4_TOS:
		case ISCSI_FLASHNODE_IPV6_TC:
		case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
		case ISCSI_FLASHNODE_NAME:
		case ISCSI_FLASHNODE_TPGT:
		case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
		case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
		case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
		case ISCSI_FLASHNODE_TCP_XMIT_WSF:
		case ISCSI_FLASHNODE_TCP_RECV_WSF:
		case ISCSI_FLASHNODE_CHAP_OUT_IDX:
		case ISCSI_FLASHNODE_USERNAME:
		case ISCSI_FLASHNODE_PASSWORD:
		case ISCSI_FLASHNODE_STATSN:
		case ISCSI_FLASHNODE_EXP_STATSN:
		case ISCSI_FLASHNODE_IS_BOOT_TGT:
			return S_IRUGO;
		default:
			return 0;
		}
583 584 585 586 587
	}

	return 0;
}

588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646
/**
 * qla4xxx_create chap_list - Create CHAP list from FLASH
 * @ha: pointer to adapter structure
 *
 * Read flash and make a list of CHAP entries, during login when a CHAP entry
 * is received, it will be checked in this list. If entry exist then the CHAP
 * entry index is set in the DDB. If CHAP entry does not exist in this list
 * then a new entry is added in FLASH in CHAP table and the index obtained is
 * used in the DDB.
 **/
static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
{
	int rval = 0;
	uint8_t *chap_flash_data = NULL;
	uint32_t offset;
	dma_addr_t chap_dma;
	uint32_t chap_size = 0;

	if (is_qla40XX(ha))
		chap_size = MAX_CHAP_ENTRIES_40XX *
			    sizeof(struct ql4_chap_table);
	else	/* Single region contains CHAP info for both
		 * ports which is divided into half for each port.
		 */
		chap_size = ha->hw.flt_chap_size / 2;

	chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
					     &chap_dma, GFP_KERNEL);
	if (!chap_flash_data) {
		ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
		return;
	}

	if (is_qla40XX(ha)) {
		offset = FLASH_CHAP_OFFSET;
	} else {
		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
		if (ha->port_num == 1)
			offset += chap_size;
	}

	rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
	if (rval != QLA_SUCCESS)
		goto exit_chap_list;

	if (ha->chap_list == NULL)
		ha->chap_list = vmalloc(chap_size);
	if (ha->chap_list == NULL) {
		ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
		goto exit_chap_list;
	}

	memset(ha->chap_list, 0, chap_size);
	memcpy(ha->chap_list, chap_flash_data, chap_size);

exit_chap_list:
	dma_free_coherent(&ha->pdev->dev, chap_size, chap_flash_data, chap_dma);
}

647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735
static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
				     int16_t chap_index,
				     struct ql4_chap_table **chap_entry)
{
	int rval = QLA_ERROR;
	int max_chap_entries;

	if (!ha->chap_list) {
		ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
		rval = QLA_ERROR;
		goto exit_get_chap;
	}

	if (is_qla80XX(ha))
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
				   sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	if (chap_index > max_chap_entries) {
		ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
		rval = QLA_ERROR;
		goto exit_get_chap;
	}

	*chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
	if ((*chap_entry)->cookie !=
	     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
		rval = QLA_ERROR;
		*chap_entry = NULL;
	} else {
		rval = QLA_SUCCESS;
	}

exit_get_chap:
	return rval;
}

/**
 * qla4xxx_find_free_chap_index - Find the first free chap index
 * @ha: pointer to adapter structure
 * @chap_index: CHAP index to be returned
 *
 * Find the first free chap index available in the chap table
 *
 * Note: Caller should acquire the chap lock before getting here.
 **/
static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
					uint16_t *chap_index)
{
	int i, rval;
	int free_index = -1;
	int max_chap_entries = 0;
	struct ql4_chap_table *chap_table;

	if (is_qla80XX(ha))
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
						sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	if (!ha->chap_list) {
		ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
		rval = QLA_ERROR;
		goto exit_find_chap;
	}

	for (i = 0; i < max_chap_entries; i++) {
		chap_table = (struct ql4_chap_table *)ha->chap_list + i;

		if ((chap_table->cookie !=
		    __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
		   (i > MAX_RESRV_CHAP_IDX)) {
				free_index = i;
				break;
		}
	}

	if (free_index != -1) {
		*chap_index = free_index;
		rval = QLA_SUCCESS;
	} else {
		rval = QLA_ERROR;
	}

exit_find_chap:
	return rval;
}

736 737 738 739 740 741 742 743 744 745
static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
				  uint32_t *num_entries, char *buf)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct ql4_chap_table *chap_table;
	struct iscsi_chap_rec *chap_rec;
	int max_chap_entries = 0;
	int valid_chap_entries = 0;
	int ret = 0, i;

746
	if (is_qla80XX(ha))
747 748 749 750 751 752 753 754 755 756 757 758 759
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
					sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
			__func__, *num_entries, chap_tbl_idx);

	if (!buf) {
		ret = -ENOMEM;
		goto exit_get_chap_list;
	}

760 761
	qla4xxx_create_chap_list(ha);

762 763 764 765 766 767 768 769 770
	chap_rec = (struct iscsi_chap_rec *) buf;
	mutex_lock(&ha->chap_sem);
	for (i = chap_tbl_idx; i < max_chap_entries; i++) {
		chap_table = (struct ql4_chap_table *)ha->chap_list + i;
		if (chap_table->cookie !=
		    __constant_cpu_to_le16(CHAP_VALID_COOKIE))
			continue;

		chap_rec->chap_tbl_idx = i;
771
		strlcpy(chap_rec->username, chap_table->name,
772
			ISCSI_CHAP_AUTH_NAME_MAX_LEN);
773
		strlcpy(chap_rec->password, chap_table->secret,
774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845
			QL4_CHAP_MAX_SECRET_LEN);
		chap_rec->password_length = chap_table->secret_len;

		if (chap_table->flags & BIT_7) /* local */
			chap_rec->chap_type = CHAP_TYPE_OUT;

		if (chap_table->flags & BIT_6) /* peer */
			chap_rec->chap_type = CHAP_TYPE_IN;

		chap_rec++;

		valid_chap_entries++;
		if (valid_chap_entries == *num_entries)
			break;
		else
			continue;
	}
	mutex_unlock(&ha->chap_sem);

exit_get_chap_list:
	ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
			__func__,  valid_chap_entries);
	*num_entries = valid_chap_entries;
	return ret;
}

static int __qla4xxx_is_chap_active(struct device *dev, void *data)
{
	int ret = 0;
	uint16_t *chap_tbl_idx = (uint16_t *) data;
	struct iscsi_cls_session *cls_session;
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;

	if (!iscsi_is_session_dev(dev))
		goto exit_is_chap_active;

	cls_session = iscsi_dev_to_session(dev);
	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;

	if (iscsi_session_chkready(cls_session))
		goto exit_is_chap_active;

	if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
		ret = 1;

exit_is_chap_active:
	return ret;
}

static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
				  uint16_t chap_tbl_idx)
{
	int ret = 0;

	ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
				    __qla4xxx_is_chap_active);

	return ret;
}

static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct ql4_chap_table *chap_table;
	dma_addr_t chap_dma;
	int max_chap_entries = 0;
	uint32_t offset = 0;
	uint32_t chap_size;
	int ret = 0;

846
	chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
847 848 849
	if (chap_table == NULL)
		return -ENOMEM;

850
	if (is_qla80XX(ha))
851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
				   sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	if (chap_tbl_idx > max_chap_entries) {
		ret = -EINVAL;
		goto exit_delete_chap;
	}

	/* Check if chap index is in use.
	 * If chap is in use don't delet chap entry */
	ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
	if (ret) {
		ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
			   "delete from flash\n", chap_tbl_idx);
		ret = -EBUSY;
		goto exit_delete_chap;
	}

	chap_size = sizeof(struct ql4_chap_table);
	if (is_qla40XX(ha))
		offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
	else {
		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
		/* flt_chap_size is CHAP table size for both ports
		 * so divide it by 2 to calculate the offset for second port
		 */
		if (ha->port_num == 1)
			offset += (ha->hw.flt_chap_size / 2);
		offset += (chap_tbl_idx * chap_size);
	}

	ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
	if (ret != QLA_SUCCESS) {
		ret = -EINVAL;
		goto exit_delete_chap;
	}

	DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
			  __le16_to_cpu(chap_table->cookie)));

	if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
		ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
		goto exit_delete_chap;
	}

	chap_table->cookie = __constant_cpu_to_le16(0xFFFF);

	offset = FLASH_CHAP_OFFSET |
			(chap_tbl_idx * sizeof(struct ql4_chap_table));
	ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
				FLASH_OPT_RMW_COMMIT);
	if (ret == QLA_SUCCESS && ha->chap_list) {
		mutex_lock(&ha->chap_sem);
		/* Update ha chap_list cache */
		memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
			chap_table, sizeof(struct ql4_chap_table));
		mutex_unlock(&ha->chap_sem);
	}
	if (ret != QLA_SUCCESS)
		ret =  -EINVAL;

exit_delete_chap:
	dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
	return ret;
}

919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937
/**
 * qla4xxx_set_chap_entry - Make chap entry with given information
 * @shost: pointer to host
 * @data: chap info - credentials, index and type to make chap entry
 * @len: length of data
 *
 * Add or update chap entry with the given information
 **/
static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct iscsi_chap_rec chap_rec;
	struct ql4_chap_table *chap_entry = NULL;
	struct iscsi_param_info *param_info;
	struct nlattr *attr;
	int max_chap_entries = 0;
	int type;
	int rem = len;
	int rc = 0;
938
	int size;
939 940 941 942 943 944 945 946 947 948 949 950 951 952

	memset(&chap_rec, 0, sizeof(chap_rec));

	nla_for_each_attr(attr, data, len, rem) {
		param_info = nla_data(attr);

		switch (param_info->param) {
		case ISCSI_CHAP_PARAM_INDEX:
			chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
			break;
		case ISCSI_CHAP_PARAM_CHAP_TYPE:
			chap_rec.chap_type = param_info->value[0];
			break;
		case ISCSI_CHAP_PARAM_USERNAME:
953 954 955
			size = min_t(size_t, sizeof(chap_rec.username),
				     param_info->len);
			memcpy(chap_rec.username, param_info->value, size);
956 957
			break;
		case ISCSI_CHAP_PARAM_PASSWORD:
958 959 960
			size = min_t(size_t, sizeof(chap_rec.password),
				     param_info->len);
			memcpy(chap_rec.password, param_info->value, size);
961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026
			break;
		case ISCSI_CHAP_PARAM_PASSWORD_LEN:
			chap_rec.password_length = param_info->value[0];
			break;
		default:
			ql4_printk(KERN_ERR, ha,
				   "%s: No such sysfs attribute\n", __func__);
			rc = -ENOSYS;
			goto exit_set_chap;
		};
	}

	if (chap_rec.chap_type == CHAP_TYPE_IN)
		type = BIDI_CHAP;
	else
		type = LOCAL_CHAP;

	if (is_qla80XX(ha))
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
				   sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	mutex_lock(&ha->chap_sem);
	if (chap_rec.chap_tbl_idx < max_chap_entries) {
		rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
					       &chap_entry);
		if (!rc) {
			if (!(type == qla4xxx_get_chap_type(chap_entry))) {
				ql4_printk(KERN_INFO, ha,
					   "Type mismatch for CHAP entry %d\n",
					   chap_rec.chap_tbl_idx);
				rc = -EINVAL;
				goto exit_unlock_chap;
			}

			/* If chap index is in use then don't modify it */
			rc = qla4xxx_is_chap_active(shost,
						    chap_rec.chap_tbl_idx);
			if (rc) {
				ql4_printk(KERN_INFO, ha,
					   "CHAP entry %d is in use\n",
					   chap_rec.chap_tbl_idx);
				rc = -EBUSY;
				goto exit_unlock_chap;
			}
		}
	} else {
		rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
		if (rc) {
			ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
			rc = -EBUSY;
			goto exit_unlock_chap;
		}
	}

	rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
			      chap_rec.chap_tbl_idx, type);

exit_unlock_chap:
	mutex_unlock(&ha->chap_sem);

exit_set_chap:
	return rc;
}

1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062

static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct iscsi_offload_host_stats *host_stats = NULL;
	int host_stats_size;
	int ret = 0;
	int ddb_idx = 0;
	struct ql_iscsi_stats *ql_iscsi_stats = NULL;
	int stats_size;
	dma_addr_t iscsi_stats_dma;

	DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));

	host_stats_size = sizeof(struct iscsi_offload_host_stats);

	if (host_stats_size != len) {
		ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
			   __func__, len, host_stats_size);
		ret = -EINVAL;
		goto exit_host_stats;
	}
	host_stats = (struct iscsi_offload_host_stats *)buf;

	if (!buf) {
		ret = -ENOMEM;
		goto exit_host_stats;
	}

	stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));

	ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
					    &iscsi_stats_dma, GFP_KERNEL);
	if (!ql_iscsi_stats) {
		ql4_printk(KERN_ERR, ha,
			   "Unable to allocate memory for iscsi stats\n");
1063
		ret = -ENOMEM;
1064 1065 1066 1067 1068 1069 1070 1071
		goto exit_host_stats;
	}

	ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
				     iscsi_stats_dma);
	if (ret != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha,
			   "Unable to retrieve iscsi stats\n");
1072
		ret = -EIO;
1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231
		goto exit_host_stats;
	}
	host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
	host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
	host_stats->mactx_multicast_frames =
			le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
	host_stats->mactx_broadcast_frames =
			le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
	host_stats->mactx_pause_frames =
			le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
	host_stats->mactx_control_frames =
			le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
	host_stats->mactx_deferral =
			le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
	host_stats->mactx_excess_deferral =
			le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
	host_stats->mactx_late_collision =
			le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
	host_stats->mactx_abort	= le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
	host_stats->mactx_single_collision =
			le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
	host_stats->mactx_multiple_collision =
			le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
	host_stats->mactx_collision =
			le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
	host_stats->mactx_frames_dropped =
			le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
	host_stats->mactx_jumbo_frames =
			le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
	host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
	host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
	host_stats->macrx_unknown_control_frames =
		le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
	host_stats->macrx_pause_frames =
			le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
	host_stats->macrx_control_frames =
			le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
	host_stats->macrx_dribble =
			le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
	host_stats->macrx_frame_length_error =
			le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
	host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
	host_stats->macrx_carrier_sense_error =
		le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
	host_stats->macrx_frame_discarded =
			le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
	host_stats->macrx_frames_dropped =
			le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
	host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
	host_stats->mac_encoding_error =
			le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
	host_stats->macrx_length_error_large =
			le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
	host_stats->macrx_length_error_small =
			le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
	host_stats->macrx_multicast_frames =
			le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
	host_stats->macrx_broadcast_frames =
			le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
	host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
	host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
	host_stats->iptx_fragments =
			le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
	host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
	host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
	host_stats->iprx_fragments =
			le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
	host_stats->ip_datagram_reassembly =
			le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
	host_stats->ip_invalid_address_error =
			le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
	host_stats->ip_error_packets =
			le64_to_cpu(ql_iscsi_stats->ip_error_packets);
	host_stats->ip_fragrx_overlap =
			le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
	host_stats->ip_fragrx_outoforder =
			le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
	host_stats->ip_datagram_reassembly_timeout =
		le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
	host_stats->ipv6tx_packets =
			le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
	host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
	host_stats->ipv6tx_fragments =
			le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
	host_stats->ipv6rx_packets =
			le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
	host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
	host_stats->ipv6rx_fragments =
			le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
	host_stats->ipv6_datagram_reassembly =
			le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
	host_stats->ipv6_invalid_address_error =
		le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
	host_stats->ipv6_error_packets =
			le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
	host_stats->ipv6_fragrx_overlap =
			le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
	host_stats->ipv6_fragrx_outoforder =
			le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
	host_stats->ipv6_datagram_reassembly_timeout =
		le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
	host_stats->tcptx_segments =
			le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
	host_stats->tcptx_bytes	= le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
	host_stats->tcprx_segments =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
	host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
	host_stats->tcp_duplicate_ack_retx =
			le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
	host_stats->tcp_retx_timer_expired =
			le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
	host_stats->tcprx_duplicate_ack	=
			le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
	host_stats->tcprx_pure_ackr =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
	host_stats->tcptx_delayed_ack =
			le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
	host_stats->tcptx_pure_ack =
			le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
	host_stats->tcprx_segment_error =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
	host_stats->tcprx_segment_outoforder =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
	host_stats->tcprx_window_probe =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
	host_stats->tcprx_window_update =
			le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
	host_stats->tcptx_window_probe_persist =
		le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
	host_stats->ecc_error_correction =
			le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
	host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
	host_stats->iscsi_data_bytes_tx =
			le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
	host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
	host_stats->iscsi_data_bytes_rx	=
			le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
	host_stats->iscsi_io_completed =
			le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
	host_stats->iscsi_unexpected_io_rx =
			le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
	host_stats->iscsi_format_error =
			le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
	host_stats->iscsi_hdr_digest_error =
			le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
	host_stats->iscsi_data_digest_error =
			le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
	host_stats->iscsi_sequence_error =
			le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
exit_host_stats:
	if (ql_iscsi_stats)
		dma_free_coherent(&ha->pdev->dev, host_stats_size,
				  ql_iscsi_stats, iscsi_stats_dma);

	ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
		   __func__);
	return ret;
}

1232 1233 1234 1235 1236 1237
static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
				   enum iscsi_param_type param_type,
				   int param, char *buf)
{
	struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
	struct scsi_qla_host *ha = to_qla_host(shost);
1238 1239
	int ival;
	char *pval = NULL;
1240 1241
	int len = -ENOSYS;

1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261
	if (param_type == ISCSI_NET_PARAM) {
		switch (param) {
		case ISCSI_NET_PARAM_IPV4_ADDR:
			len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
			break;
		case ISCSI_NET_PARAM_IPV4_SUBNET:
			len = sprintf(buf, "%pI4\n",
				      &ha->ip_config.subnet_mask);
			break;
		case ISCSI_NET_PARAM_IPV4_GW:
			len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
			break;
		case ISCSI_NET_PARAM_IFACE_ENABLE:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(ha->ip_config.ipv4_options,
					 IPOPT_IPV4_PROTOCOL_ENABLE, pval);
			} else {
				OP_STATE(ha->ip_config.ipv6_options,
					 IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
			}
1262

1263 1264 1265
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1266
			len = sprintf(buf, "%s\n",
1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537
				      (ha->ip_config.tcp_options &
				       TCPOPT_DHCP_ENABLE) ?
				      "dhcp" : "static");
			break;
		case ISCSI_NET_PARAM_IPV6_ADDR:
			if (iface->iface_num == 0)
				len = sprintf(buf, "%pI6\n",
					      &ha->ip_config.ipv6_addr0);
			if (iface->iface_num == 1)
				len = sprintf(buf, "%pI6\n",
					      &ha->ip_config.ipv6_addr1);
			break;
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
			len = sprintf(buf, "%pI6\n",
				      &ha->ip_config.ipv6_link_local_addr);
			break;
		case ISCSI_NET_PARAM_IPV6_ROUTER:
			len = sprintf(buf, "%pI6\n",
				      &ha->ip_config.ipv6_default_router_addr);
			break;
		case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
			pval = (ha->ip_config.ipv6_addl_options &
				IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
				"nd" : "static";

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
			pval = (ha->ip_config.ipv6_addl_options &
				IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
				"auto" : "static";

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_VLAN_ID:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				ival = ha->ip_config.ipv4_vlan_tag &
				       ISCSI_MAX_VLAN_ID;
			else
				ival = ha->ip_config.ipv6_vlan_tag &
				       ISCSI_MAX_VLAN_ID;

			len = sprintf(buf, "%d\n", ival);
			break;
		case ISCSI_NET_PARAM_VLAN_PRIORITY:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
				       ISCSI_MAX_VLAN_PRIORITY;
			else
				ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
				       ISCSI_MAX_VLAN_PRIORITY;

			len = sprintf(buf, "%d\n", ival);
			break;
		case ISCSI_NET_PARAM_VLAN_ENABLED:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(ha->ip_config.ipv4_options,
					 IPOPT_VLAN_TAGGING_ENABLE, pval);
			} else {
				OP_STATE(ha->ip_config.ipv6_options,
					 IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_MTU:
			len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
			break;
		case ISCSI_NET_PARAM_PORT:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				len = sprintf(buf, "%d\n",
					      ha->ip_config.ipv4_port);
			else
				len = sprintf(buf, "%d\n",
					      ha->ip_config.ipv6_port);
			break;
		case ISCSI_NET_PARAM_IPADDR_STATE:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				pval = iscsi_get_ipaddress_state_name(
						ha->ip_config.ipv4_addr_state);
			} else {
				if (iface->iface_num == 0)
					pval = iscsi_get_ipaddress_state_name(
						ha->ip_config.ipv6_addr0_state);
				else if (iface->iface_num == 1)
					pval = iscsi_get_ipaddress_state_name(
						ha->ip_config.ipv6_addr1_state);
			}

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
			pval = iscsi_get_ipaddress_state_name(
					ha->ip_config.ipv6_link_local_state);
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
			pval = iscsi_get_router_state_name(
				      ha->ip_config.ipv6_default_router_state);
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_DELAYED_ACK_EN:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(~ha->ip_config.tcp_options,
					 TCPOPT_DELAYED_ACK_DISABLE, pval);
			} else {
				OP_STATE(~ha->ip_config.ipv6_tcp_options,
					 IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(~ha->ip_config.tcp_options,
					 TCPOPT_NAGLE_ALGO_DISABLE, pval);
			} else {
				OP_STATE(~ha->ip_config.ipv6_tcp_options,
					 IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(~ha->ip_config.tcp_options,
					 TCPOPT_WINDOW_SCALE_DISABLE, pval);
			} else {
				OP_STATE(~ha->ip_config.ipv6_tcp_options,
					 IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
					 pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_TCP_WSF:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				len = sprintf(buf, "%d\n",
					      ha->ip_config.tcp_wsf);
			else
				len = sprintf(buf, "%d\n",
					      ha->ip_config.ipv6_tcp_wsf);
			break;
		case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				ival = (ha->ip_config.tcp_options &
					TCPOPT_TIMER_SCALE) >> 1;
			else
				ival = (ha->ip_config.ipv6_tcp_options &
					IPV6_TCPOPT_TIMER_SCALE) >> 1;

			len = sprintf(buf, "%d\n", ival);
			break;
		case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(ha->ip_config.tcp_options,
					 TCPOPT_TIMESTAMP_ENABLE, pval);
			} else {
				OP_STATE(ha->ip_config.ipv6_tcp_options,
					 IPV6_TCPOPT_TIMESTAMP_EN, pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_CACHE_ID:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
				len = sprintf(buf, "%d\n",
					      ha->ip_config.ipv4_cache_id);
			else
				len = sprintf(buf, "%d\n",
					      ha->ip_config.ipv6_cache_id);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
			OP_STATE(ha->ip_config.tcp_options,
				 TCPOPT_DNS_SERVER_IP_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
			OP_STATE(ha->ip_config.tcp_options,
				 TCPOPT_SLP_DA_INFO_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_TOS_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_IPV4_TOS_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_TOS:
			len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
			break;
		case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_GRAT_ARP_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
			OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
				 pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
			pval = (ha->ip_config.ipv4_alt_cid_len) ?
			       (char *)ha->ip_config.ipv4_alt_cid : "";

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_REQ_VID_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_USE_VID_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
			pval = (ha->ip_config.ipv4_vid_len) ?
			       (char *)ha->ip_config.ipv4_vid : "";

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_LEARN_IQN_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
			OP_STATE(~ha->ip_config.ipv4_options,
				 IPOPT_FRAGMENTATION_DISABLE, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
			OP_STATE(ha->ip_config.ipv4_options,
				 IPOPT_IN_FORWARD_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_REDIRECT_EN:
			if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
				OP_STATE(ha->ip_config.ipv4_options,
					 IPOPT_ARP_REDIRECT_EN, pval);
			} else {
				OP_STATE(ha->ip_config.ipv6_options,
					 IPV6_OPT_REDIRECT_EN, pval);
			}
			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV4_TTL:
			len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
			break;
		case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
			OP_STATE(ha->ip_config.ipv6_options,
				 IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV6_MLD_EN:
			OP_STATE(ha->ip_config.ipv6_addl_options,
				 IPV6_ADDOPT_MLD_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
			len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
			break;
		case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
1538
			len = sprintf(buf, "%d\n",
1539 1540 1541
				      ha->ip_config.ipv6_traffic_class);
			break;
		case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
1542
			len = sprintf(buf, "%d\n",
1543 1544 1545
				      ha->ip_config.ipv6_hop_limit);
			break;
		case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
1546
			len = sprintf(buf, "%d\n",
1547 1548 1549
				      ha->ip_config.ipv6_nd_reach_time);
			break;
		case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
1550
			len = sprintf(buf, "%d\n",
1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668
				      ha->ip_config.ipv6_nd_rexmit_timer);
			break;
		case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.ipv6_nd_stale_timeout);
			break;
		case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.ipv6_dup_addr_detect_count);
			break;
		case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.ipv6_gw_advrt_mtu);
			break;
		default:
			len = -ENOSYS;
		}
	} else if (param_type == ISCSI_IFACE_PARAM) {
		switch (param) {
		case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
			len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
			break;
		case ISCSI_IFACE_PARAM_HDRDGST_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_HEADER_DIGEST_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_DATADGST_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_DATA_DIGEST_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_IMM_DATA_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_IMMEDIATE_DATA_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_INITIAL_R2T_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_DATA_PDU_INORDER_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_ERL:
			len = sprintf(buf, "%d\n",
				      (ha->ip_config.iscsi_options &
				       ISCSIOPTS_ERL));
			break;
		case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
			len = sprintf(buf, "%u\n",
				      ha->ip_config.iscsi_max_pdu_size *
				      BYTE_UNITS);
			break;
		case ISCSI_IFACE_PARAM_FIRST_BURST:
			len = sprintf(buf, "%u\n",
				      ha->ip_config.iscsi_first_burst_len *
				      BYTE_UNITS);
			break;
		case ISCSI_IFACE_PARAM_MAX_R2T:
			len = sprintf(buf, "%d\n",
				      ha->ip_config.iscsi_max_outstnd_r2t);
			break;
		case ISCSI_IFACE_PARAM_MAX_BURST:
			len = sprintf(buf, "%u\n",
				      ha->ip_config.iscsi_max_burst_len *
				      BYTE_UNITS);
			break;
		case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_CHAP_AUTH_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_BIDI_CHAP_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_DISCOVERY_AUTH_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
			OP_STATE(ha->ip_config.iscsi_options,
				 ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);

			len = sprintf(buf, "%s\n", pval);
			break;
		case ISCSI_IFACE_PARAM_INITIATOR_NAME:
			len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
			break;
		default:
			len = -ENOSYS;
		}
1669 1670 1671 1672 1673
	}

	return len;
}

1674 1675 1676
static struct iscsi_endpoint *
qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
		   int non_blocking)
1677
{
1678 1679 1680 1681 1682 1683
	int ret;
	struct iscsi_endpoint *ep;
	struct qla_endpoint *qla_ep;
	struct scsi_qla_host *ha;
	struct sockaddr_in *addr;
	struct sockaddr_in6 *addr6;
1684

1685 1686
	if (!shost) {
		ret = -ENXIO;
1687
		pr_err("%s: shost is NULL\n", __func__);
1688 1689
		return ERR_PTR(ret);
	}
1690

1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710
	ha = iscsi_host_priv(shost);
	ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
	if (!ep) {
		ret = -ENOMEM;
		return ERR_PTR(ret);
	}

	qla_ep = ep->dd_data;
	memset(qla_ep, 0, sizeof(struct qla_endpoint));
	if (dst_addr->sa_family == AF_INET) {
		memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
		addr = (struct sockaddr_in *)&qla_ep->dst_addr;
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
				  (char *)&addr->sin_addr));
	} else if (dst_addr->sa_family == AF_INET6) {
		memcpy(&qla_ep->dst_addr, dst_addr,
		       sizeof(struct sockaddr_in6));
		addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
				  (char *)&addr6->sin6_addr));
1711 1712 1713
	} else {
		ql4_printk(KERN_WARNING, ha, "%s: Invalid endpoint\n",
			   __func__);
1714 1715 1716 1717 1718
	}

	qla_ep->host = shost;

	return ep;
1719 1720
}

1721
static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1722
{
1723 1724 1725
	struct qla_endpoint *qla_ep;
	struct scsi_qla_host *ha;
	int ret = 0;
1726

1727 1728
	qla_ep = ep->dd_data;
	ha = to_qla_host(qla_ep->host);
1729
	DEBUG2(pr_info_ratelimited("%s: host: %ld\n", __func__, ha->host_no));
1730

1731
	if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1732 1733 1734 1735 1736 1737 1738
		ret = 1;

	return ret;
}

static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
{
1739 1740 1741 1742 1743 1744 1745
	struct qla_endpoint *qla_ep;
	struct scsi_qla_host *ha;

	qla_ep = ep->dd_data;
	ha = to_qla_host(qla_ep->host);
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
			  ha->host_no));
1746 1747 1748 1749 1750 1751 1752 1753 1754
	iscsi_destroy_endpoint(ep);
}

static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
				enum iscsi_param param,
				char *buf)
{
	struct qla_endpoint *qla_ep = ep->dd_data;
	struct sockaddr *dst_addr;
1755
	struct scsi_qla_host *ha;
1756

1757 1758 1759
	if (!qla_ep)
		return -ENOTCONN;

1760 1761 1762
	ha = to_qla_host(qla_ep->host);
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
			  ha->host_no));
1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794

	switch (param) {
	case ISCSI_PARAM_CONN_PORT:
	case ISCSI_PARAM_CONN_ADDRESS:
		dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
		if (!dst_addr)
			return -ENOTCONN;

		return iscsi_conn_get_addr_param((struct sockaddr_storage *)
						 &qla_ep->dst_addr, param, buf);
	default:
		return -ENOSYS;
	}
}

static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
				   struct iscsi_stats *stats)
{
	struct iscsi_session *sess;
	struct iscsi_cls_session *cls_sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
	struct ql_iscsi_stats *ql_iscsi_stats;
	int stats_size;
	int ret;
	dma_addr_t iscsi_stats_dma;

	cls_sess = iscsi_conn_to_session(cls_conn);
	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;

1795 1796
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
			  ha->host_no));
1797 1798 1799 1800 1801 1802 1803 1804
	stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
	/* Allocate memory */
	ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
					    &iscsi_stats_dma, GFP_KERNEL);
	if (!ql_iscsi_stats) {
		ql4_printk(KERN_ERR, ha,
			   "Unable to allocate memory for iscsi stats\n");
		goto exit_get_stats;
1805
	}
1806 1807 1808 1809 1810

	ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
				     iscsi_stats_dma);
	if (ret != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha,
1811
			   "Unable to retrieve iscsi stats\n");
1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861
		goto free_stats;
	}

	/* octets */
	stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
	stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
	/* xmit pdus */
	stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
	stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
	stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
	stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
	stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
	stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
	stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
	stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
	/* recv pdus */
	stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
	stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
	stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
	stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
	stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
	stats->logoutrsp_pdus =
			le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
	stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
	stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
	stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);

free_stats:
	dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
			  iscsi_stats_dma);
exit_get_stats:
	return;
}

static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
{
	struct iscsi_cls_session *session;
	struct iscsi_session *sess;
	unsigned long flags;
	enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;

	session = starget_to_session(scsi_target(sc->device));
	sess = session->dd_data;

	spin_lock_irqsave(&session->lock, flags);
	if (session->state == ISCSI_SESSION_FAILED)
		ret = BLK_EH_RESET_TIMER;
	spin_unlock_irqrestore(&session->lock, flags);

	return ret;
1862 1863
}

1864 1865 1866
static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
1867
	struct iscsi_cls_host *ihost = shost->shost_data;
1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891
	uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;

	qla4xxx_get_firmware_state(ha);

	switch (ha->addl_fw_state & 0x0F00) {
	case FW_ADDSTATE_LINK_SPEED_10MBPS:
		speed = ISCSI_PORT_SPEED_10MBPS;
		break;
	case FW_ADDSTATE_LINK_SPEED_100MBPS:
		speed = ISCSI_PORT_SPEED_100MBPS;
		break;
	case FW_ADDSTATE_LINK_SPEED_1GBPS:
		speed = ISCSI_PORT_SPEED_1GBPS;
		break;
	case FW_ADDSTATE_LINK_SPEED_10GBPS:
		speed = ISCSI_PORT_SPEED_10GBPS;
		break;
	}
	ihost->port_speed = speed;
}

static void qla4xxx_set_port_state(struct Scsi_Host *shost)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
1892
	struct iscsi_cls_host *ihost = shost->shost_data;
1893 1894 1895 1896 1897 1898 1899 1900
	uint32_t state = ISCSI_PORT_STATE_DOWN;

	if (test_bit(AF_LINK_UP, &ha->flags))
		state = ISCSI_PORT_STATE_UP;

	ihost->port_state = state;
}

1901 1902 1903 1904 1905 1906 1907 1908
static int qla4xxx_host_get_param(struct Scsi_Host *shost,
				  enum iscsi_host_param param, char *buf)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	int len;

	switch (param) {
	case ISCSI_HOST_PARAM_HWADDRESS:
1909
		len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1910
		break;
1911
	case ISCSI_HOST_PARAM_IPADDRESS:
1912
		len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1913
		break;
1914
	case ISCSI_HOST_PARAM_INITIATOR_NAME:
1915
		len = sprintf(buf, "%s\n", ha->name_string);
1916
		break;
1917 1918 1919 1920 1921 1922 1923 1924
	case ISCSI_HOST_PARAM_PORT_STATE:
		qla4xxx_set_port_state(shost);
		len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
		break;
	case ISCSI_HOST_PARAM_PORT_SPEED:
		qla4xxx_set_port_speed(shost);
		len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
		break;
1925 1926 1927 1928 1929 1930 1931
	default:
		return -ENOSYS;
	}

	return len;
}

1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003
static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
{
	if (ha->iface_ipv4)
		return;

	/* IPv4 */
	ha->iface_ipv4 = iscsi_create_iface(ha->host,
					    &qla4xxx_iscsi_transport,
					    ISCSI_IFACE_TYPE_IPV4, 0, 0);
	if (!ha->iface_ipv4)
		ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
			   "iface0.\n");
}

static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
{
	if (!ha->iface_ipv6_0)
		/* IPv6 iface-0 */
		ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
						      &qla4xxx_iscsi_transport,
						      ISCSI_IFACE_TYPE_IPV6, 0,
						      0);
	if (!ha->iface_ipv6_0)
		ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
			   "iface0.\n");

	if (!ha->iface_ipv6_1)
		/* IPv6 iface-1 */
		ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
						      &qla4xxx_iscsi_transport,
						      ISCSI_IFACE_TYPE_IPV6, 1,
						      0);
	if (!ha->iface_ipv6_1)
		ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
			   "iface1.\n");
}

static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
{
	if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
		qla4xxx_create_ipv4_iface(ha);

	if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
		qla4xxx_create_ipv6_iface(ha);
}

static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
{
	if (ha->iface_ipv4) {
		iscsi_destroy_iface(ha->iface_ipv4);
		ha->iface_ipv4 = NULL;
	}
}

static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
{
	if (ha->iface_ipv6_0) {
		iscsi_destroy_iface(ha->iface_ipv6_0);
		ha->iface_ipv6_0 = NULL;
	}
	if (ha->iface_ipv6_1) {
		iscsi_destroy_iface(ha->iface_ipv6_1);
		ha->iface_ipv6_1 = NULL;
	}
}

static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
{
	qla4xxx_destroy_ipv4_iface(ha);
	qla4xxx_destroy_ipv6_iface(ha);
}

2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048
static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
			     struct iscsi_iface_param_info *iface_param,
			     struct addr_ctrl_blk *init_fw_cb)
{
	/*
	 * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
	 * iface_num 1 is valid only for IPv6 Addr.
	 */
	switch (iface_param->param) {
	case ISCSI_NET_PARAM_IPV6_ADDR:
		if (iface_param->iface_num & 0x1)
			/* IPv6 Addr 1 */
			memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
			       sizeof(init_fw_cb->ipv6_addr1));
		else
			/* IPv6 Addr 0 */
			memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
			       sizeof(init_fw_cb->ipv6_addr0));
		break;
	case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
		if (iface_param->iface_num & 0x1)
			break;
		memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
		       sizeof(init_fw_cb->ipv6_if_id));
		break;
	case ISCSI_NET_PARAM_IPV6_ROUTER:
		if (iface_param->iface_num & 0x1)
			break;
		memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
		       sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
		break;
	case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
		/* Autocfg applies to even interface */
		if (iface_param->iface_num & 0x1)
			break;

		if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
			init_fw_cb->ipv6_addtl_opts &=
				cpu_to_le16(
				  ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
		else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
			init_fw_cb->ipv6_addtl_opts |=
				cpu_to_le16(
				  IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
		else
2049 2050
			ql4_printk(KERN_ERR, ha,
				   "Invalid autocfg setting for IPv6 addr\n");
2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065
		break;
	case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
		/* Autocfg applies to even interface */
		if (iface_param->iface_num & 0x1)
			break;

		if (iface_param->value[0] ==
		    ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
			init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
					IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
		else if (iface_param->value[0] ==
			 ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
			init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
				       ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
		else
2066 2067
			ql4_printk(KERN_ERR, ha,
				   "Invalid autocfg setting for IPv6 linklocal addr\n");
2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078
		break;
	case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
		/* Autocfg applies to even interface */
		if (iface_param->iface_num & 0x1)
			break;

		if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
			memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
			       sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
		break;
	case ISCSI_NET_PARAM_IFACE_ENABLE:
2079
		if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2080 2081
			init_fw_cb->ipv6_opts |=
				cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
2082 2083
			qla4xxx_create_ipv6_iface(ha);
		} else {
2084 2085 2086
			init_fw_cb->ipv6_opts &=
				cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
					    0xFFFF);
2087 2088
			qla4xxx_destroy_ipv6_iface(ha);
		}
2089
		break;
2090
	case ISCSI_NET_PARAM_VLAN_TAG:
2091 2092
		if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
			break;
2093 2094 2095 2096 2097 2098 2099 2100 2101 2102
		init_fw_cb->ipv6_vlan_tag =
				cpu_to_be16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_VLAN_ENABLED:
		if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
			init_fw_cb->ipv6_opts |=
				cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
		else
			init_fw_cb->ipv6_opts &=
				cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
2103
		break;
2104 2105 2106 2107
	case ISCSI_NET_PARAM_MTU:
		init_fw_cb->eth_mtu_size =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
2108 2109 2110 2111 2112 2113 2114 2115
	case ISCSI_NET_PARAM_PORT:
		/* Autocfg applies to even interface */
		if (iface_param->iface_num & 0x1)
			break;

		init_fw_cb->ipv6_port =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
2116 2117 2118 2119 2120 2121 2122 2123
	case ISCSI_NET_PARAM_DELAYED_ACK_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv6_tcp_opts |=
				cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
		else
			init_fw_cb->ipv6_tcp_opts &=
2124 2125
				cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE &
					    0xFFFF);
2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245
		break;
	case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv6_tcp_opts |=
				cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
		else
			init_fw_cb->ipv6_tcp_opts &=
				cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
		break;
	case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv6_tcp_opts |=
				cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
		else
			init_fw_cb->ipv6_tcp_opts &=
				cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
		break;
	case ISCSI_NET_PARAM_TCP_WSF:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_tcp_opts &=
					cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
		init_fw_cb->ipv6_tcp_opts |=
				cpu_to_le16((iface_param->value[0] << 1) &
					    IPV6_TCPOPT_TIMER_SCALE);
		break;
	case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv6_tcp_opts |=
				cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
		else
			init_fw_cb->ipv6_tcp_opts &=
				cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
		break;
	case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv6_opts |=
				cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
		else
			init_fw_cb->ipv6_opts &=
				cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
		break;
	case ISCSI_NET_PARAM_REDIRECT_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv6_opts |=
				cpu_to_le16(IPV6_OPT_REDIRECT_EN);
		else
			init_fw_cb->ipv6_opts &=
				cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
		break;
	case ISCSI_NET_PARAM_IPV6_MLD_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv6_addtl_opts |=
				cpu_to_le16(IPV6_ADDOPT_MLD_EN);
		else
			init_fw_cb->ipv6_addtl_opts &=
				cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
		break;
	case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_flow_lbl =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_traffic_class = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_hop_limit = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_nd_reach_time =
				cpu_to_le32(*(uint32_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_nd_rexmit_timer =
				cpu_to_le32(*(uint32_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_nd_stale_timeout =
				cpu_to_le32(*(uint32_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv6_gw_advrt_mtu =
				cpu_to_le32(*(uint32_t *)iface_param->value);
		break;
2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280
	default:
		ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
			   iface_param->param);
		break;
	}
}

static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
			     struct iscsi_iface_param_info *iface_param,
			     struct addr_ctrl_blk *init_fw_cb)
{
	switch (iface_param->param) {
	case ISCSI_NET_PARAM_IPV4_ADDR:
		memcpy(init_fw_cb->ipv4_addr, iface_param->value,
		       sizeof(init_fw_cb->ipv4_addr));
		break;
	case ISCSI_NET_PARAM_IPV4_SUBNET:
		memcpy(init_fw_cb->ipv4_subnet,	iface_param->value,
		       sizeof(init_fw_cb->ipv4_subnet));
		break;
	case ISCSI_NET_PARAM_IPV4_GW:
		memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
		       sizeof(init_fw_cb->ipv4_gw_addr));
		break;
	case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
		if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
			init_fw_cb->ipv4_tcp_opts |=
					cpu_to_le16(TCPOPT_DHCP_ENABLE);
		else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
			init_fw_cb->ipv4_tcp_opts &=
					cpu_to_le16(~TCPOPT_DHCP_ENABLE);
		else
			ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
		break;
	case ISCSI_NET_PARAM_IFACE_ENABLE:
2281
		if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2282
			init_fw_cb->ipv4_ip_opts |=
2283
				cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
2284 2285
			qla4xxx_create_ipv4_iface(ha);
		} else {
2286
			init_fw_cb->ipv4_ip_opts &=
2287
				cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
2288
					    0xFFFF);
2289 2290
			qla4xxx_destroy_ipv4_iface(ha);
		}
2291
		break;
2292
	case ISCSI_NET_PARAM_VLAN_TAG:
2293 2294
		if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
			break;
2295 2296 2297 2298 2299 2300 2301 2302 2303 2304
		init_fw_cb->ipv4_vlan_tag =
				cpu_to_be16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_NET_PARAM_VLAN_ENABLED:
		if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
					cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
		else
			init_fw_cb->ipv4_ip_opts &=
					cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
2305
		break;
2306 2307 2308 2309
	case ISCSI_NET_PARAM_MTU:
		init_fw_cb->eth_mtu_size =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
2310 2311 2312 2313
	case ISCSI_NET_PARAM_PORT:
		init_fw_cb->ipv4_port =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
2314 2315 2316 2317 2318 2319 2320 2321
	case ISCSI_NET_PARAM_DELAYED_ACK_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
		else
			init_fw_cb->ipv4_tcp_opts &=
2322 2323
				cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE &
					    0xFFFF);
2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503
		break;
	case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
		else
			init_fw_cb->ipv4_tcp_opts &=
				cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
		break;
	case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
		else
			init_fw_cb->ipv4_tcp_opts &=
				cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
		break;
	case ISCSI_NET_PARAM_TCP_WSF:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
		init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16((iface_param->value[0] << 1) &
					    TCPOPT_TIMER_SCALE);
		break;
	case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
		else
			init_fw_cb->ipv4_tcp_opts &=
				cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
		else
			init_fw_cb->ipv4_tcp_opts &=
				cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_tcp_opts |=
				cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
		else
			init_fw_cb->ipv4_tcp_opts &=
				cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_TOS_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
				cpu_to_le16(IPOPT_IPV4_TOS_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
				cpu_to_le16(~IPOPT_IPV4_TOS_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_TOS:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv4_tos = iface_param->value[0];
		break;
	case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
					cpu_to_le16(IPOPT_GRAT_ARP_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
					cpu_to_le16(~IPOPT_GRAT_ARP_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
				cpu_to_le16(IPOPT_ALT_CID_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
				cpu_to_le16(~IPOPT_ALT_CID_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
		if (iface_param->iface_num & 0x1)
			break;
		memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
		       (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
		init_fw_cb->ipv4_dhcp_alt_cid_len =
					strlen(init_fw_cb->ipv4_dhcp_alt_cid);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
					cpu_to_le16(IPOPT_REQ_VID_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
					cpu_to_le16(~IPOPT_REQ_VID_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
					cpu_to_le16(IPOPT_USE_VID_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
					cpu_to_le16(~IPOPT_USE_VID_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
		if (iface_param->iface_num & 0x1)
			break;
		memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
		       (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
		init_fw_cb->ipv4_dhcp_vid_len =
					strlen(init_fw_cb->ipv4_dhcp_vid);
		break;
	case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
					cpu_to_le16(IPOPT_LEARN_IQN_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
					cpu_to_le16(~IPOPT_LEARN_IQN_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
			init_fw_cb->ipv4_ip_opts |=
				cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
		else
			init_fw_cb->ipv4_ip_opts &=
				cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
		break;
	case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
				cpu_to_le16(IPOPT_IN_FORWARD_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
				cpu_to_le16(~IPOPT_IN_FORWARD_EN);
		break;
	case ISCSI_NET_PARAM_REDIRECT_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->ipv4_ip_opts |=
				cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
		else
			init_fw_cb->ipv4_ip_opts &=
				cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
		break;
	case ISCSI_NET_PARAM_IPV4_TTL:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->ipv4_ttl = iface_param->value[0];
		break;
2504 2505 2506 2507 2508 2509 2510
	default:
		ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
			   iface_param->param);
		break;
	}
}

2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672
static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
				    struct iscsi_iface_param_info *iface_param,
				    struct addr_ctrl_blk *init_fw_cb)
{
	switch (iface_param->param) {
	case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->def_timeout =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_IFACE_PARAM_HDRDGST_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
		break;
	case ISCSI_IFACE_PARAM_DATADGST_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
		break;
	case ISCSI_IFACE_PARAM_IMM_DATA_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
		break;
	case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
		break;
	case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
		break;
	case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
		break;
	case ISCSI_IFACE_PARAM_ERL:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
		init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
						      ISCSIOPTS_ERL);
		break;
	case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->iscsi_max_pdu_size =
				cpu_to_le32(*(uint32_t *)iface_param->value) /
				BYTE_UNITS;
		break;
	case ISCSI_IFACE_PARAM_FIRST_BURST:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->iscsi_fburst_len =
				cpu_to_le32(*(uint32_t *)iface_param->value) /
				BYTE_UNITS;
		break;
	case ISCSI_IFACE_PARAM_MAX_R2T:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->iscsi_max_outstnd_r2t =
				cpu_to_le16(*(uint16_t *)iface_param->value);
		break;
	case ISCSI_IFACE_PARAM_MAX_BURST:
		if (iface_param->iface_num & 0x1)
			break;
		init_fw_cb->iscsi_max_burst_len =
				cpu_to_le32(*(uint32_t *)iface_param->value) /
				BYTE_UNITS;
		break;
	case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
		break;
	case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
		break;
	case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
		break;
	case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
		break;
	case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
		if (iface_param->iface_num & 0x1)
			break;
		if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
			init_fw_cb->iscsi_opts |=
				cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
		else
			init_fw_cb->iscsi_opts &=
				cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
		break;
	default:
		ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
			   iface_param->param);
		break;
	}
}

2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695
static void
qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
{
	struct addr_ctrl_blk_def *acb;
	acb = (struct addr_ctrl_blk_def *)init_fw_cb;
	memset(acb->reserved1, 0, sizeof(acb->reserved1));
	memset(acb->reserved2, 0, sizeof(acb->reserved2));
	memset(acb->reserved3, 0, sizeof(acb->reserved3));
	memset(acb->reserved4, 0, sizeof(acb->reserved4));
	memset(acb->reserved5, 0, sizeof(acb->reserved5));
	memset(acb->reserved6, 0, sizeof(acb->reserved6));
	memset(acb->reserved7, 0, sizeof(acb->reserved7));
	memset(acb->reserved8, 0, sizeof(acb->reserved8));
	memset(acb->reserved9, 0, sizeof(acb->reserved9));
	memset(acb->reserved10, 0, sizeof(acb->reserved10));
	memset(acb->reserved11, 0, sizeof(acb->reserved11));
	memset(acb->reserved12, 0, sizeof(acb->reserved12));
	memset(acb->reserved13, 0, sizeof(acb->reserved13));
	memset(acb->reserved14, 0, sizeof(acb->reserved14));
	memset(acb->reserved15, 0, sizeof(acb->reserved15));
}

static int
2696
qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
2697 2698 2699 2700 2701 2702 2703 2704
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	int rval = 0;
	struct iscsi_iface_param_info *iface_param = NULL;
	struct addr_ctrl_blk *init_fw_cb = NULL;
	dma_addr_t init_fw_cb_dma;
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];
2705 2706
	uint32_t rem = len;
	struct nlattr *attr;
2707

2708 2709 2710
	init_fw_cb = dma_zalloc_coherent(&ha->pdev->dev,
					 sizeof(struct addr_ctrl_blk),
					 &init_fw_cb_dma, GFP_KERNEL);
2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725
	if (!init_fw_cb) {
		ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
			   __func__);
		return -ENOMEM;
	}

	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));

	if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
		ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
		rval = -EIO;
		goto exit_init_fw_cb;
	}

2726 2727
	nla_for_each_attr(attr, data, len, rem) {
		iface_param = nla_data(attr);
2728

2729 2730 2731 2732 2733 2734 2735 2736 2737
		if (iface_param->param_type == ISCSI_NET_PARAM) {
			switch (iface_param->iface_type) {
			case ISCSI_IFACE_TYPE_IPV4:
				switch (iface_param->iface_num) {
				case 0:
					qla4xxx_set_ipv4(ha, iface_param,
							 init_fw_cb);
					break;
				default:
2738
				/* Cannot have more than one IPv4 interface */
2739 2740 2741 2742 2743
					ql4_printk(KERN_ERR, ha,
						   "Invalid IPv4 iface number = %d\n",
						   iface_param->iface_num);
					break;
				}
2744
				break;
2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758
			case ISCSI_IFACE_TYPE_IPV6:
				switch (iface_param->iface_num) {
				case 0:
				case 1:
					qla4xxx_set_ipv6(ha, iface_param,
							 init_fw_cb);
					break;
				default:
				/* Cannot have more than two IPv6 interface */
					ql4_printk(KERN_ERR, ha,
						   "Invalid IPv6 iface number = %d\n",
						   iface_param->iface_num);
					break;
				}
2759 2760
				break;
			default:
2761 2762
				ql4_printk(KERN_ERR, ha,
					   "Invalid iface type\n");
2763 2764
				break;
			}
2765 2766 2767 2768 2769
		} else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
				qla4xxx_set_iscsi_param(ha, iface_param,
							init_fw_cb);
		} else {
			continue;
2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784
		}
	}

	init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);

	rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
				 sizeof(struct addr_ctrl_blk),
				 FLASH_OPT_RMW_COMMIT);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
			   __func__);
		rval = -EIO;
		goto exit_init_fw_cb;
	}

2785 2786 2787 2788 2789 2790 2791 2792 2793 2794
	rval = qla4xxx_disable_acb(ha);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
			   __func__);
		rval = -EIO;
		goto exit_init_fw_cb;
	}

	wait_for_completion_timeout(&ha->disable_acb_comp,
				    DISABLE_ACB_TOV * HZ);
2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816

	qla4xxx_initcb_to_acb(init_fw_cb);

	rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
			   __func__);
		rval = -EIO;
		goto exit_init_fw_cb;
	}

	memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
	qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
				  init_fw_cb_dma);

exit_init_fw_cb:
	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
			  init_fw_cb, init_fw_cb_dma);

	return rval;
}

2817 2818 2819 2820 2821 2822
static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
				     enum iscsi_param param, char *buf)
{
	struct iscsi_session *sess = cls_sess->dd_data;
	struct ddb_entry *ddb_entry = sess->dd_data;
	struct scsi_qla_host *ha = ddb_entry->ha;
2823 2824
	struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
	struct ql4_chap_table chap_tbl;
2825 2826 2827
	int rval, len;
	uint16_t idx;

2828
	memset(&chap_tbl, 0, sizeof(chap_tbl));
2829 2830 2831 2832 2833 2834
	switch (param) {
	case ISCSI_PARAM_CHAP_IN_IDX:
		rval = qla4xxx_get_chap_index(ha, sess->username_in,
					      sess->password_in, BIDI_CHAP,
					      &idx);
		if (rval)
2835 2836 2837
			len = sprintf(buf, "\n");
		else
			len = sprintf(buf, "%hu\n", idx);
2838 2839
		break;
	case ISCSI_PARAM_CHAP_OUT_IDX:
2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851
		if (ddb_entry->ddb_type == FLASH_DDB) {
			if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
				idx = ddb_entry->chap_tbl_idx;
				rval = QLA_SUCCESS;
			} else {
				rval = QLA_ERROR;
			}
		} else {
			rval = qla4xxx_get_chap_index(ha, sess->username,
						      sess->password,
						      LOCAL_CHAP, &idx);
		}
2852
		if (rval)
2853 2854 2855
			len = sprintf(buf, "\n");
		else
			len = sprintf(buf, "%hu\n", idx);
2856
		break;
2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879
	case ISCSI_PARAM_USERNAME:
	case ISCSI_PARAM_PASSWORD:
		/* First, populate session username and password for FLASH DDB,
		 * if not already done. This happens when session login fails
		 * for a FLASH DDB.
		 */
		if (ddb_entry->ddb_type == FLASH_DDB &&
		    ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
		    !sess->username && !sess->password) {
			idx = ddb_entry->chap_tbl_idx;
			rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
							    chap_tbl.secret,
							    idx);
			if (!rval) {
				iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
						(char *)chap_tbl.name,
						strlen((char *)chap_tbl.name));
				iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
						(char *)chap_tbl.secret,
						chap_tbl.secret_len);
			}
		}
		/* allow fall-through */
2880 2881 2882 2883 2884 2885 2886
	default:
		return iscsi_session_get_param(cls_sess, param, buf);
	}

	return len;
}

2887
static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
2888 2889
				  enum iscsi_param param, char *buf)
{
2890 2891 2892
	struct iscsi_conn *conn;
	struct qla_conn *qla_conn;
	struct sockaddr *dst_addr;
2893

2894 2895
	conn = cls_conn->dd_data;
	qla_conn = conn->dd_data;
2896
	dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2897 2898 2899 2900

	switch (param) {
	case ISCSI_PARAM_CONN_PORT:
	case ISCSI_PARAM_CONN_ADDRESS:
2901 2902
		return iscsi_conn_get_addr_param((struct sockaddr_storage *)
						 dst_addr, param, buf);
2903
	default:
2904
		return iscsi_conn_get_param(cls_conn, param, buf);
2905 2906 2907
	}
}

2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051
int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
{
	uint32_t mbx_sts = 0;
	uint16_t tmp_ddb_index;
	int ret;

get_ddb_index:
	tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);

	if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "Free DDB index not available\n"));
		ret = QLA_ERROR;
		goto exit_get_ddb_index;
	}

	if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
		goto get_ddb_index;

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Found a free DDB index at %d\n", tmp_ddb_index));
	ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
	if (ret == QLA_ERROR) {
		if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
			ql4_printk(KERN_INFO, ha,
				   "DDB index = %d not available trying next\n",
				   tmp_ddb_index);
			goto get_ddb_index;
		}
		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "Free FW DDB not available\n"));
	}

	*ddb_index = tmp_ddb_index;

exit_get_ddb_index:
	return ret;
}

static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
				   struct ddb_entry *ddb_entry,
				   char *existing_ipaddr,
				   char *user_ipaddr)
{
	uint8_t dst_ipaddr[IPv6_ADDR_LEN];
	char formatted_ipaddr[DDB_IPADDR_LEN];
	int status = QLA_SUCCESS, ret = 0;

	if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
		ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
			       '\0', NULL);
		if (ret == 0) {
			status = QLA_ERROR;
			goto out_match;
		}
		ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
	} else {
		ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
			       '\0', NULL);
		if (ret == 0) {
			status = QLA_ERROR;
			goto out_match;
		}
		ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
	}

	if (strcmp(existing_ipaddr, formatted_ipaddr))
		status = QLA_ERROR;

out_match:
	return status;
}

static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
				      struct iscsi_cls_conn *cls_conn)
{
	int idx = 0, max_ddbs, rval;
	struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
	struct iscsi_session *sess, *existing_sess;
	struct iscsi_conn *conn, *existing_conn;
	struct ddb_entry *ddb_entry;

	sess = cls_sess->dd_data;
	conn = cls_conn->dd_data;

	if (sess->targetname == NULL ||
	    conn->persistent_address == NULL ||
	    conn->persistent_port == 0)
		return QLA_ERROR;

	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;

	for (idx = 0; idx < max_ddbs; idx++) {
		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
		if (ddb_entry == NULL)
			continue;

		if (ddb_entry->ddb_type != FLASH_DDB)
			continue;

		existing_sess = ddb_entry->sess->dd_data;
		existing_conn = ddb_entry->conn->dd_data;

		if (existing_sess->targetname == NULL ||
		    existing_conn->persistent_address == NULL ||
		    existing_conn->persistent_port == 0)
			continue;

		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "IQN = %s User IQN = %s\n",
				  existing_sess->targetname,
				  sess->targetname));

		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "IP = %s User IP = %s\n",
				  existing_conn->persistent_address,
				  conn->persistent_address));

		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "Port = %d User Port = %d\n",
				  existing_conn->persistent_port,
				  conn->persistent_port));

		if (strcmp(existing_sess->targetname, sess->targetname))
			continue;
		rval = qla4xxx_match_ipaddress(ha, ddb_entry,
					existing_conn->persistent_address,
					conn->persistent_address);
		if (rval == QLA_ERROR)
			continue;
		if (existing_conn->persistent_port != conn->persistent_port)
			continue;
		break;
	}

	if (idx == max_ddbs)
		return QLA_ERROR;

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Match found in fwdb sessions\n"));
	return QLA_SUCCESS;
}

3052 3053 3054 3055 3056 3057 3058 3059 3060
static struct iscsi_cls_session *
qla4xxx_session_create(struct iscsi_endpoint *ep,
			uint16_t cmds_max, uint16_t qdepth,
			uint32_t initial_cmdsn)
{
	struct iscsi_cls_session *cls_sess;
	struct scsi_qla_host *ha;
	struct qla_endpoint *qla_ep;
	struct ddb_entry *ddb_entry;
3061
	uint16_t ddb_index;
3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073
	struct iscsi_session *sess;
	struct sockaddr *dst_addr;
	int ret;

	if (!ep) {
		printk(KERN_ERR "qla4xxx: missing ep.\n");
		return NULL;
	}

	qla_ep = ep->dd_data;
	dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
	ha = to_qla_host(qla_ep->host);
3074 3075
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
			  ha->host_no));
3076

3077 3078
	ret = qla4xxx_get_ddb_index(ha, &ddb_index);
	if (ret == QLA_ERROR)
3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093
		return NULL;

	cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
				       cmds_max, sizeof(struct ddb_entry),
				       sizeof(struct ql4_task_data),
				       initial_cmdsn, ddb_index);
	if (!cls_sess)
		return NULL;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ddb_entry->fw_ddb_index = ddb_index;
	ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
	ddb_entry->ha = ha;
	ddb_entry->sess = cls_sess;
3094 3095
	ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
	ddb_entry->ddb_change = qla4xxx_ddb_change;
3096
	clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108
	cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
	ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
	ha->tot_ddbs++;

	return cls_sess;
}

static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
3109 3110 3111 3112 3113
	unsigned long flags, wtime;
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	uint32_t ddb_state;
	int ret;
3114 3115 3116 3117

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
3118 3119
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
			  ha->host_no));
3120

3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145
	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		goto destroy_session;
	}

	wtime = jiffies + (HZ * LOGOUT_TOV);
	do {
		ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
					      fw_ddb_entry, fw_ddb_entry_dma,
					      NULL, NULL, &ddb_state, NULL,
					      NULL, NULL);
		if (ret == QLA_ERROR)
			goto destroy_session;

		if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
		    (ddb_state == DDB_DS_SESSION_FAILED))
			goto destroy_session;

		schedule_timeout_uninterruptible(HZ);
	} while ((time_after(wtime, jiffies)));

destroy_session:
3146
	qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
3147 3148
	if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
		clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
3149 3150 3151
	spin_lock_irqsave(&ha->hardware_lock, flags);
	qla4xxx_free_ddb(ha, ddb_entry);
	spin_unlock_irqrestore(&ha->hardware_lock, flags);
3152

3153
	iscsi_session_teardown(cls_sess);
3154 3155 3156 3157

	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
3158 3159 3160 3161 3162 3163 3164 3165
}

static struct iscsi_cls_conn *
qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
{
	struct iscsi_cls_conn *cls_conn;
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
3166
	struct scsi_qla_host *ha;
3167 3168 3169

	cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
				    conn_idx);
3170 3171 3172
	if (!cls_conn) {
		pr_info("%s: Can not create connection for conn_idx = %u\n",
			__func__, conn_idx);
3173
		return NULL;
3174
	}
3175

3176 3177 3178 3179
	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ddb_entry->conn = cls_conn;

3180 3181 3182
	ha = ddb_entry->ha;
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: conn_idx = %u\n", __func__,
			  conn_idx));
3183 3184 3185 3186 3187 3188 3189 3190 3191 3192
	return cls_conn;
}

static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
			     struct iscsi_cls_conn *cls_conn,
			     uint64_t transport_fd, int is_leading)
{
	struct iscsi_conn *conn;
	struct qla_conn *qla_conn;
	struct iscsi_endpoint *ep;
3193 3194 3195 3196 3197 3198 3199
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
	struct iscsi_session *sess;

	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
3200

3201 3202
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
			  cls_session->sid, cls_conn->cid));
3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218

	if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
		return -EINVAL;
	ep = iscsi_lookup_endpoint(transport_fd);
	conn = cls_conn->dd_data;
	qla_conn = conn->dd_data;
	qla_conn->qla_ep = ep->dd_data;
	return 0;
}

static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
{
	struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
3219
	struct dev_db_entry *fw_ddb_entry = NULL;
3220 3221 3222 3223 3224 3225 3226 3227
	dma_addr_t fw_ddb_entry_dma;
	uint32_t mbx_sts = 0;
	int ret = 0;
	int status = QLA_SUCCESS;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
3228 3229
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
			  cls_sess->sid, cls_conn->cid));
3230

3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242
	/* Check if we have  matching FW DDB, if yes then do not
	 * login to this target. This could cause target to logout previous
	 * connection
	 */
	ret = qla4xxx_match_fwdb_session(ha, cls_conn);
	if (ret == QLA_SUCCESS) {
		ql4_printk(KERN_INFO, ha,
			   "Session already exist in FW.\n");
		ret = -EEXIST;
		goto exit_conn_start;
	}

3243 3244 3245 3246 3247
	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
3248 3249
		ret = -ENOMEM;
		goto exit_conn_start;
3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260
	}

	ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
	if (ret) {
		/* If iscsid is stopped and started then no need to do
		* set param again since ddb state will be already
		* active and FW does not allow set ddb to an
		* active session.
		*/
		if (mbx_sts)
			if (ddb_entry->fw_ddb_device_state ==
3261
						DDB_DS_SESSION_ACTIVE) {
3262
				ddb_entry->unblock_sess(ddb_entry->sess);
3263
				goto exit_set_param;
3264
			}
3265 3266 3267 3268 3269 3270 3271 3272

		ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
			   __func__, ddb_entry->fw_ddb_index);
		goto exit_conn_start;
	}

	status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
	if (status == QLA_ERROR) {
3273 3274
		ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
			   sess->targetname);
3275 3276 3277 3278
		ret = -EINVAL;
		goto exit_conn_start;
	}

3279 3280 3281 3282 3283
	if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
		ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;

	DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
		      ddb_entry->fw_ddb_device_state));
3284 3285 3286 3287 3288

exit_set_param:
	ret = 0;

exit_conn_start:
3289 3290 3291
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305
	return ret;
}

static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
{
	struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
	struct iscsi_session *sess;
	struct scsi_qla_host *ha;
	struct ddb_entry *ddb_entry;
	int options;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
3306 3307
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: cid = %d\n", __func__,
			  cls_conn->cid));
3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390

	options = LOGOUT_OPTION_CLOSE_SESSION;
	if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
		ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
}

static void qla4xxx_task_work(struct work_struct *wdata)
{
	struct ql4_task_data *task_data;
	struct scsi_qla_host *ha;
	struct passthru_status *sts;
	struct iscsi_task *task;
	struct iscsi_hdr *hdr;
	uint8_t *data;
	uint32_t data_len;
	struct iscsi_conn *conn;
	int hdr_len;
	itt_t itt;

	task_data = container_of(wdata, struct ql4_task_data, task_work);
	ha = task_data->ha;
	task = task_data->task;
	sts = &task_data->sts;
	hdr_len = sizeof(struct iscsi_hdr);

	DEBUG3(printk(KERN_INFO "Status returned\n"));
	DEBUG3(qla4xxx_dump_buffer(sts, 64));
	DEBUG3(printk(KERN_INFO "Response buffer"));
	DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));

	conn = task->conn;

	switch (sts->completionStatus) {
	case PASSTHRU_STATUS_COMPLETE:
		hdr = (struct iscsi_hdr *)task_data->resp_buffer;
		/* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
		itt = sts->handle;
		hdr->itt = itt;
		data = task_data->resp_buffer + hdr_len;
		data_len = task_data->resp_len - hdr_len;
		iscsi_complete_pdu(conn, hdr, data, data_len);
		break;
	default:
		ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
			   sts->completionStatus);
		break;
	}
	return;
}

static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
{
	struct ql4_task_data *task_data;
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
	int hdr_len;

	sess = task->conn->session;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	task_data = task->dd_data;
	memset(task_data, 0, sizeof(struct ql4_task_data));

	if (task->sc) {
		ql4_printk(KERN_INFO, ha,
			   "%s: SCSI Commands not implemented\n", __func__);
		return -EINVAL;
	}

	hdr_len = sizeof(struct iscsi_hdr);
	task_data->ha = ha;
	task_data->task = task;

	if (task->data_count) {
		task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
						     task->data_count,
						     PCI_DMA_TODEVICE);
	}

	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
		      __func__, task->conn->max_recv_dlength, hdr_len));

3391
	task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
3392 3393 3394 3395 3396 3397 3398
	task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
						    task_data->resp_len,
						    &task_data->resp_dma,
						    GFP_ATOMIC);
	if (!task_data->resp_buffer)
		goto exit_alloc_pdu;

3399
	task_data->req_len = task->data_count + hdr_len;
3400
	task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
3401
						   task_data->req_len,
3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418
						   &task_data->req_dma,
						   GFP_ATOMIC);
	if (!task_data->req_buffer)
		goto exit_alloc_pdu;

	task->hdr = task_data->req_buffer;

	INIT_WORK(&task_data->task_work, qla4xxx_task_work);

	return 0;

exit_alloc_pdu:
	if (task_data->resp_buffer)
		dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
				  task_data->resp_buffer, task_data->resp_dma);

	if (task_data->req_buffer)
3419
		dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447
				  task_data->req_buffer, task_data->req_dma);
	return -ENOMEM;
}

static void qla4xxx_task_cleanup(struct iscsi_task *task)
{
	struct ql4_task_data *task_data;
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
	int hdr_len;

	hdr_len = sizeof(struct iscsi_hdr);
	sess = task->conn->session;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	task_data = task->dd_data;

	if (task->data_count) {
		dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
				 task->data_count, PCI_DMA_TODEVICE);
	}

	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
		      __func__, task->conn->max_recv_dlength, hdr_len));

	dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
			  task_data->resp_buffer, task_data->resp_dma);
3448
	dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467
			  task_data->req_buffer, task_data->req_dma);
	return;
}

static int qla4xxx_task_xmit(struct iscsi_task *task)
{
	struct scsi_cmnd *sc = task->sc;
	struct iscsi_session *sess = task->conn->session;
	struct ddb_entry *ddb_entry = sess->dd_data;
	struct scsi_qla_host *ha = ddb_entry->ha;

	if (!sc)
		return qla4xxx_send_passthru0(task);

	ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
		   __func__);
	return -ENOSYS;
}

3468 3469 3470 3471 3472 3473 3474 3475 3476 3477
static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
					 struct iscsi_bus_flash_conn *conn,
					 struct dev_db_entry *fw_ddb_entry)
{
	unsigned long options = 0;
	int rc = 0;

	options = le16_to_cpu(fw_ddb_entry->options);
	conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
	if (test_bit(OPT_IPV6_DEVICE, &options)) {
3478 3479
		rc = iscsi_switch_str_param(&sess->portal_type,
					    PORTAL_TYPE_IPV6);
3480 3481 3482
		if (rc)
			goto exit_copy;
	} else {
3483 3484
		rc = iscsi_switch_str_param(&sess->portal_type,
					    PORTAL_TYPE_IPV4);
3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578
		if (rc)
			goto exit_copy;
	}

	sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
					      &options);
	sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
	sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);

	options = le16_to_cpu(fw_ddb_entry->iscsi_options);
	conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
	conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
	sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
	sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
	sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
					    &options);
	sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
	sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
	conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
	sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
					     &options);
	sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
	sess->discovery_auth_optional =
			test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
	if (test_bit(ISCSIOPT_ERL1, &options))
		sess->erl |= BIT_1;
	if (test_bit(ISCSIOPT_ERL0, &options))
		sess->erl |= BIT_0;

	options = le16_to_cpu(fw_ddb_entry->tcp_options);
	conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
	conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
	conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
	if (test_bit(TCPOPT_TIMER_SCALE3, &options))
		conn->tcp_timer_scale |= BIT_3;
	if (test_bit(TCPOPT_TIMER_SCALE2, &options))
		conn->tcp_timer_scale |= BIT_2;
	if (test_bit(TCPOPT_TIMER_SCALE1, &options))
		conn->tcp_timer_scale |= BIT_1;

	conn->tcp_timer_scale >>= 1;
	conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);

	options = le16_to_cpu(fw_ddb_entry->ip_options);
	conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);

	conn->max_recv_dlength = BYTE_UNITS *
			  le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
	conn->max_xmit_dlength = BYTE_UNITS *
			  le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
	sess->first_burst = BYTE_UNITS *
			       le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
	sess->max_burst = BYTE_UNITS *
				 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
	sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
	sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
	sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
	sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
	conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
	conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
	conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
	conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
	conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
	conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
	conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
	conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
	sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
	sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
	sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
	sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);

	sess->default_taskmgmt_timeout =
				le16_to_cpu(fw_ddb_entry->def_timeout);
	conn->port = le16_to_cpu(fw_ddb_entry->port);

	options = le16_to_cpu(fw_ddb_entry->options);
	conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
	if (!conn->ipaddress) {
		rc = -ENOMEM;
		goto exit_copy;
	}

	conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
	if (!conn->redirect_ipaddr) {
		rc = -ENOMEM;
		goto exit_copy;
	}

	memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
	memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);

	if (test_bit(OPT_IPV6_DEVICE, &options)) {
		conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;

3579 3580 3581
		conn->link_local_ipv6_addr = kmemdup(
					fw_ddb_entry->link_local_ipv6_addr,
					IPv6_ADDR_LEN, GFP_KERNEL);
3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618
		if (!conn->link_local_ipv6_addr) {
			rc = -ENOMEM;
			goto exit_copy;
		}
	} else {
		conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
	}

	if (fw_ddb_entry->iscsi_name[0]) {
		rc = iscsi_switch_str_param(&sess->targetname,
					    (char *)fw_ddb_entry->iscsi_name);
		if (rc)
			goto exit_copy;
	}

	if (fw_ddb_entry->iscsi_alias[0]) {
		rc = iscsi_switch_str_param(&sess->targetalias,
					    (char *)fw_ddb_entry->iscsi_alias);
		if (rc)
			goto exit_copy;
	}

	COPY_ISID(sess->isid, fw_ddb_entry->isid);

exit_copy:
	return rc;
}

static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
				       struct iscsi_bus_flash_conn *conn,
				       struct dev_db_entry *fw_ddb_entry)
{
	uint16_t options;
	int rc = 0;

	options = le16_to_cpu(fw_ddb_entry->options);
	SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
3619
	if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671
		options |= BIT_8;
	else
		options &= ~BIT_8;

	SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
	SET_BITVAL(sess->discovery_sess, options, BIT_4);
	SET_BITVAL(sess->entry_state, options, BIT_3);
	fw_ddb_entry->options = cpu_to_le16(options);

	options = le16_to_cpu(fw_ddb_entry->iscsi_options);
	SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
	SET_BITVAL(conn->datadgst_en, options, BIT_12);
	SET_BITVAL(sess->imm_data_en, options, BIT_11);
	SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
	SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
	SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
	SET_BITVAL(sess->chap_auth_en, options, BIT_7);
	SET_BITVAL(conn->snack_req_en, options, BIT_6);
	SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
	SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
	SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
	SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
	SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
	fw_ddb_entry->iscsi_options = cpu_to_le16(options);

	options = le16_to_cpu(fw_ddb_entry->tcp_options);
	SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
	SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
	SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
	SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
	SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
	SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
	SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
	fw_ddb_entry->tcp_options = cpu_to_le16(options);

	options = le16_to_cpu(fw_ddb_entry->ip_options);
	SET_BITVAL(conn->fragment_disable, options, BIT_4);
	fw_ddb_entry->ip_options = cpu_to_le16(options);

	fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
	fw_ddb_entry->iscsi_max_rcv_data_seg_len =
			       cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
	fw_ddb_entry->iscsi_max_snd_data_seg_len =
			       cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
	fw_ddb_entry->iscsi_first_burst_len =
				cpu_to_le16(sess->first_burst / BYTE_UNITS);
	fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
					    BYTE_UNITS);
	fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
	fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
	fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
	fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
3672 3673
	fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
	fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
3674 3675 3676
	fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
	fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
	fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
3677 3678
	fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
	fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
3679
	fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
3680 3681 3682 3683 3684 3685
	fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
	fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
	fw_ddb_entry->port = cpu_to_le16(conn->port);
	fw_ddb_entry->def_timeout =
				cpu_to_le16(sess->default_taskmgmt_timeout);

3686 3687 3688 3689 3690
	if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
		fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
	else
		fw_ddb_entry->ipv4_tos = conn->ipv4_tos;

3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716
	if (conn->ipaddress)
		memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
		       sizeof(fw_ddb_entry->ip_addr));

	if (conn->redirect_ipaddr)
		memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
		       sizeof(fw_ddb_entry->tgt_addr));

	if (conn->link_local_ipv6_addr)
		memcpy(fw_ddb_entry->link_local_ipv6_addr,
		       conn->link_local_ipv6_addr,
		       sizeof(fw_ddb_entry->link_local_ipv6_addr));

	if (sess->targetname)
		memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
		       sizeof(fw_ddb_entry->iscsi_name));

	if (sess->targetalias)
		memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
		       sizeof(fw_ddb_entry->iscsi_alias));

	COPY_ISID(fw_ddb_entry->isid, sess->isid);

	return rc;
}

3717 3718 3719 3720 3721 3722 3723
static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
					     struct iscsi_session *sess,
					     struct dev_db_entry *fw_ddb_entry)
{
	unsigned long options = 0;
	uint16_t ddb_link;
	uint16_t disc_parent;
3724
	char ip_addr[DDB_IPADDR_LEN];
3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805

	options = le16_to_cpu(fw_ddb_entry->options);
	conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
	sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
					      &options);
	sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);

	options = le16_to_cpu(fw_ddb_entry->iscsi_options);
	conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
	conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
	sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
	sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
	sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
					    &options);
	sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
	sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
	sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
					     &options);
	sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
	sess->discovery_auth_optional =
			test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
	if (test_bit(ISCSIOPT_ERL1, &options))
		sess->erl |= BIT_1;
	if (test_bit(ISCSIOPT_ERL0, &options))
		sess->erl |= BIT_0;

	options = le16_to_cpu(fw_ddb_entry->tcp_options);
	conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
	conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
	conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
	if (test_bit(TCPOPT_TIMER_SCALE3, &options))
		conn->tcp_timer_scale |= BIT_3;
	if (test_bit(TCPOPT_TIMER_SCALE2, &options))
		conn->tcp_timer_scale |= BIT_2;
	if (test_bit(TCPOPT_TIMER_SCALE1, &options))
		conn->tcp_timer_scale |= BIT_1;

	conn->tcp_timer_scale >>= 1;
	conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);

	options = le16_to_cpu(fw_ddb_entry->ip_options);
	conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);

	conn->max_recv_dlength = BYTE_UNITS *
			  le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
	conn->max_xmit_dlength = BYTE_UNITS *
			  le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
	sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
	sess->first_burst = BYTE_UNITS *
			       le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
	sess->max_burst = BYTE_UNITS *
				 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
	sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
	sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
	sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
	conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
	conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
	conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
	conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
	conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
	conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
	conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
	conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
	sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
	COPY_ISID(sess->isid, fw_ddb_entry->isid);

	ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
	if (ddb_link == DDB_ISNS)
		disc_parent = ISCSI_DISC_PARENT_ISNS;
	else if (ddb_link == DDB_NO_LINK)
		disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
	else if (ddb_link < MAX_DDB_ENTRIES)
		disc_parent = ISCSI_DISC_PARENT_SENDTGT;
	else
		disc_parent = ISCSI_DISC_PARENT_UNKNOWN;

	iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
			iscsi_get_discovery_parent_name(disc_parent), 0);

	iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
			(char *)fw_ddb_entry->iscsi_alias, 0);
3806 3807 3808 3809 3810 3811 3812 3813

	options = le16_to_cpu(fw_ddb_entry->options);
	if (options & DDB_OPT_IPV6_DEVICE) {
		memset(ip_addr, 0, sizeof(ip_addr));
		sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
		iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
				(char *)ip_addr, 0);
	}
3814 3815
}

3816 3817 3818 3819 3820 3821 3822
static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
				     struct dev_db_entry *fw_ddb_entry,
				     struct iscsi_cls_session *cls_sess,
				     struct iscsi_cls_conn *cls_conn)
{
	int buflen = 0;
	struct iscsi_session *sess;
3823
	struct ddb_entry *ddb_entry;
3824
	struct ql4_chap_table chap_tbl;
3825 3826 3827 3828 3829
	struct iscsi_conn *conn;
	char ip_addr[DDB_IPADDR_LEN];
	uint16_t options = 0;

	sess = cls_sess->dd_data;
3830
	ddb_entry = sess->dd_data;
3831
	conn = cls_conn->dd_data;
3832
	memset(&chap_tbl, 0, sizeof(chap_tbl));
3833

3834 3835
	ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);

3836
	qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3837

3838
	sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
3839 3840
	conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);

3841
	memset(ip_addr, 0, sizeof(ip_addr));
3842
	options = le16_to_cpu(fw_ddb_entry->options);
3843 3844 3845 3846
	if (options & DDB_OPT_IPV6_DEVICE) {
		iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);

		memset(ip_addr, 0, sizeof(ip_addr));
3847
		sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3848 3849
	} else {
		iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
3850
		sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3851
	}
3852

3853 3854
	iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
			(char *)ip_addr, buflen);
3855 3856 3857 3858
	iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
			(char *)fw_ddb_entry->iscsi_name, buflen);
	iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
			(char *)ha->name_string, buflen);
3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871

	if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
		if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
						   chap_tbl.secret,
						   ddb_entry->chap_tbl_idx)) {
			iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
					(char *)chap_tbl.name,
					strlen((char *)chap_tbl.name));
			iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
					(char *)chap_tbl.secret,
					chap_tbl.secret_len);
		}
	}
3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913
}

void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
					     struct ddb_entry *ddb_entry)
{
	struct iscsi_cls_session *cls_sess;
	struct iscsi_cls_conn *cls_conn;
	uint32_t ddb_state;
	dma_addr_t fw_ddb_entry_dma;
	struct dev_db_entry *fw_ddb_entry;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		goto exit_session_conn_fwddb_param;
	}

	if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
				    fw_ddb_entry_dma, NULL, NULL, &ddb_state,
				    NULL, NULL, NULL) == QLA_ERROR) {
		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
				  "get_ddb_entry for fw_ddb_index %d\n",
				  ha->host_no, __func__,
				  ddb_entry->fw_ddb_index));
		goto exit_session_conn_fwddb_param;
	}

	cls_sess = ddb_entry->sess;

	cls_conn = ddb_entry->conn;

	/* Update params */
	qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);

exit_session_conn_fwddb_param:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
}

3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929
void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
				       struct ddb_entry *ddb_entry)
{
	struct iscsi_cls_session *cls_sess;
	struct iscsi_cls_conn *cls_conn;
	struct iscsi_session *sess;
	struct iscsi_conn *conn;
	uint32_t ddb_state;
	dma_addr_t fw_ddb_entry_dma;
	struct dev_db_entry *fw_ddb_entry;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
3930
		goto exit_session_conn_param;
3931 3932 3933 3934 3935 3936 3937 3938 3939
	}

	if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
				    fw_ddb_entry_dma, NULL, NULL, &ddb_state,
				    NULL, NULL, NULL) == QLA_ERROR) {
		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
				  "get_ddb_entry for fw_ddb_index %d\n",
				  ha->host_no, __func__,
				  ddb_entry->fw_ddb_index));
3940
		goto exit_session_conn_param;
3941 3942 3943 3944 3945 3946 3947 3948
	}

	cls_sess = ddb_entry->sess;
	sess = cls_sess->dd_data;

	cls_conn = ddb_entry->conn;
	conn = cls_conn->dd_data;

3949 3950
	/* Update timers after login */
	ddb_entry->default_relogin_timeout =
3951 3952 3953
		(le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
		 (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
		 le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
3954 3955 3956
	ddb_entry->default_time2wait =
				le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);

3957
	/* Update params */
3958
	ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3959
	qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3960 3961 3962

	memcpy(sess->initiatorname, ha->name_string,
	       min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
3963 3964 3965 3966 3967

exit_session_conn_param:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
3968 3969
}

3970 3971 3972
/*
 * Timer routines
 */
3973
static void qla4xxx_timer(struct timer_list *t);
3974

3975
static void qla4xxx_start_timer(struct scsi_qla_host *ha,
3976 3977 3978 3979
				unsigned long interval)
{
	DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
		     __func__, ha->host->host_no));
3980
	timer_setup(&ha->timer, qla4xxx_timer, 0);
3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992
	ha->timer.expires = jiffies + interval * HZ;
	add_timer(&ha->timer);
	ha->timer_active = 1;
}

static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
{
	del_timer_sync(&ha->timer);
	ha->timer_active = 0;
}

/***
3993 3994
 * qla4xxx_mark_device_missing - blocks the session
 * @cls_session: Pointer to the session to be blocked
3995 3996
 * @ddb_entry: Pointer to device database entry
 *
3997
 * This routine marks a device missing and close connection.
3998
 **/
3999
void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
4000
{
4001
	iscsi_block_session(cls_session);
4002 4003
}

4004 4005 4006 4007 4008 4009 4010 4011
/**
 * qla4xxx_mark_all_devices_missing - mark all devices as missing.
 * @ha: Pointer to host adapter structure.
 *
 * This routine marks a device missing and resets the relogin retry count.
 **/
void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
{
4012
	iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
4013 4014
}

4015 4016
static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
				       struct ddb_entry *ddb_entry,
4017
				       struct scsi_cmnd *cmd)
4018 4019 4020 4021 4022 4023 4024
{
	struct srb *srb;

	srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
	if (!srb)
		return srb;

4025
	kref_init(&srb->srb_ref);
4026 4027 4028 4029
	srb->ha = ha;
	srb->ddb = ddb_entry;
	srb->cmd = cmd;
	srb->flags = 0;
4030
	CMD_SP(cmd) = (void *)srb;
4031 4032 4033 4034 4035 4036 4037 4038 4039

	return srb;
}

static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
{
	struct scsi_cmnd *cmd = srb->cmd;

	if (srb->flags & SRB_DMA_VALID) {
4040
		scsi_dma_unmap(cmd);
4041 4042
		srb->flags &= ~SRB_DMA_VALID;
	}
4043
	CMD_SP(cmd) = NULL;
4044 4045
}

4046
void qla4xxx_srb_compl(struct kref *ref)
4047
{
4048
	struct srb *srb = container_of(ref, struct srb, srb_ref);
4049
	struct scsi_cmnd *cmd = srb->cmd;
4050
	struct scsi_qla_host *ha = srb->ha;
4051 4052 4053 4054 4055 4056 4057 4058 4059 4060

	qla4xxx_srb_free_dma(ha, srb);

	mempool_free(srb, ha->srb_mempool);

	cmd->scsi_done(cmd);
}

/**
 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
4061
 * @host: scsi host
4062 4063 4064 4065 4066 4067 4068 4069 4070 4071
 * @cmd: Pointer to Linux's SCSI command structure
 *
 * Remarks:
 * This routine is invoked by Linux to send a SCSI command to the driver.
 * The mid-level driver tries to ensure that queuecommand never gets
 * invoked concurrently with itself or the interrupt handler (although
 * the interrupt handler may call this routine as part of request-
 * completion handling).   Unfortunely, it sometimes calls the scheduler
 * in interrupt context which is a big NO! NO!.
 **/
4072
static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
4073
{
4074
	struct scsi_qla_host *ha = to_qla_host(host);
4075
	struct ddb_entry *ddb_entry = cmd->device->hostdata;
4076
	struct iscsi_cls_session *sess = ddb_entry->sess;
4077 4078 4079
	struct srb *srb;
	int rval;

4080 4081 4082 4083 4084 4085 4086 4087
	if (test_bit(AF_EEH_BUSY, &ha->flags)) {
		if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
			cmd->result = DID_NO_CONNECT << 16;
		else
			cmd->result = DID_REQUEUE << 16;
		goto qc_fail_command;
	}

4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098
	if (!sess) {
		cmd->result = DID_IMM_RETRY << 16;
		goto qc_fail_command;
	}

	rval = iscsi_session_chkready(sess);
	if (rval) {
		cmd->result = rval;
		goto qc_fail_command;
	}

4099 4100 4101 4102 4103 4104
	if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
	    test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
	    test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
	    test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
	    test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
	    !test_bit(AF_ONLINE, &ha->flags) ||
4105
	    !test_bit(AF_LINK_UP, &ha->flags) ||
4106
	    test_bit(AF_LOOPBACK, &ha->flags) ||
4107 4108
	    test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
	    test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
4109
	    test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
D
David C Somayajulu 已提交
4110 4111
		goto qc_host_busy;

4112
	srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
4113
	if (!srb)
4114
		goto qc_host_busy;
4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129

	rval = qla4xxx_send_command_to_isp(ha, srb);
	if (rval != QLA_SUCCESS)
		goto qc_host_busy_free_sp;

	return 0;

qc_host_busy_free_sp:
	qla4xxx_srb_free_dma(ha, srb);
	mempool_free(srb, ha->srb_mempool);

qc_host_busy:
	return SCSI_MLQUEUE_HOST_BUSY;

qc_fail_command:
4130
	cmd->scsi_done(cmd);
4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146

	return 0;
}

/**
 * qla4xxx_mem_free - frees memory allocated to adapter
 * @ha: Pointer to host adapter structure.
 *
 * Frees memory previously allocated by qla4xxx_mem_alloc
 **/
static void qla4xxx_mem_free(struct scsi_qla_host *ha)
{
	if (ha->queues)
		dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
				  ha->queues_dma);

4147 4148 4149
	 if (ha->fw_dump)
		vfree(ha->fw_dump);

4150 4151 4152 4153 4154 4155 4156 4157 4158
	ha->queues_len = 0;
	ha->queues = NULL;
	ha->queues_dma = 0;
	ha->request_ring = NULL;
	ha->request_dma = 0;
	ha->response_ring = NULL;
	ha->response_dma = 0;
	ha->shadow_regs = NULL;
	ha->shadow_regs_dma = 0;
4159 4160
	ha->fw_dump = NULL;
	ha->fw_dump_size = 0;
4161 4162 4163 4164 4165 4166 4167

	/* Free srb pool. */
	if (ha->srb_mempool)
		mempool_destroy(ha->srb_mempool);

	ha->srb_mempool = NULL;

4168 4169 4170
	if (ha->chap_dma_pool)
		dma_pool_destroy(ha->chap_dma_pool);

4171 4172 4173 4174
	if (ha->chap_list)
		vfree(ha->chap_list);
	ha->chap_list = NULL;

4175 4176 4177
	if (ha->fw_ddb_dma_pool)
		dma_pool_destroy(ha->fw_ddb_dma_pool);

4178
	/* release io space registers  */
4179 4180 4181 4182
	if (is_qla8022(ha)) {
		if (ha->nx_pcibase)
			iounmap(
			    (struct device_reg_82xx __iomem *)ha->nx_pcibase);
4183
	} else if (is_qla8032(ha) || is_qla8042(ha)) {
4184 4185 4186 4187
		if (ha->nx_pcibase)
			iounmap(
			    (struct device_reg_83xx __iomem *)ha->nx_pcibase);
	} else if (ha->reg) {
4188
		iounmap(ha->reg);
4189 4190 4191 4192 4193
	}

	if (ha->reset_tmplt.buff)
		vfree(ha->reset_tmplt.buff);

4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213
	pci_release_regions(ha->pdev);
}

/**
 * qla4xxx_mem_alloc - allocates memory for use by adapter.
 * @ha: Pointer to host adapter structure
 *
 * Allocates DMA memory for request and response queues. Also allocates memory
 * for srbs.
 **/
static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
{
	unsigned long align;

	/* Allocate contiguous block of DMA memory for queues. */
	ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
			  (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
			  sizeof(struct shadow_regs) +
			  MEM_ALIGN_VALUE +
			  (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
4214 4215
	ha->queues = dma_zalloc_coherent(&ha->pdev->dev, ha->queues_len,
					 &ha->queues_dma, GFP_KERNEL);
4216
	if (ha->queues == NULL) {
4217 4218
		ql4_printk(KERN_WARNING, ha,
		    "Memory Allocation failed - queues.\n");
4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252

		goto mem_alloc_error_exit;
	}

	/*
	 * As per RISC alignment requirements -- the bus-address must be a
	 * multiple of the request-ring size (in bytes).
	 */
	align = 0;
	if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
		align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
					   (MEM_ALIGN_VALUE - 1));

	/* Update request and response queue pointers. */
	ha->request_dma = ha->queues_dma + align;
	ha->request_ring = (struct queue_entry *) (ha->queues + align);
	ha->response_dma = ha->queues_dma + align +
		(REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
	ha->response_ring = (struct queue_entry *) (ha->queues + align +
						    (REQUEST_QUEUE_DEPTH *
						     QUEUE_SIZE));
	ha->shadow_regs_dma = ha->queues_dma + align +
		(REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
		(RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
	ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
						  (REQUEST_QUEUE_DEPTH *
						   QUEUE_SIZE) +
						  (RESPONSE_QUEUE_DEPTH *
						   QUEUE_SIZE));

	/* Allocate memory for srb pool. */
	ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
					 mempool_free_slab, srb_cachep);
	if (ha->srb_mempool == NULL) {
4253 4254
		ql4_printk(KERN_WARNING, ha,
		    "Memory Allocation failed - SRB Pool.\n");
4255 4256 4257 4258

		goto mem_alloc_error_exit;
	}

4259 4260 4261 4262 4263 4264 4265 4266 4267
	ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
					    CHAP_DMA_BLOCK_SIZE, 8, 0);

	if (ha->chap_dma_pool == NULL) {
		ql4_printk(KERN_WARNING, ha,
		    "%s: chap_dma_pool allocation failed..\n", __func__);
		goto mem_alloc_error_exit;
	}

4268 4269 4270 4271 4272 4273 4274 4275 4276 4277
	ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
					      DDB_DMA_BLOCK_SIZE, 8, 0);

	if (ha->fw_ddb_dma_pool == NULL) {
		ql4_printk(KERN_WARNING, ha,
			   "%s: fw_ddb_dma_pool allocation failed..\n",
			   __func__);
		goto mem_alloc_error_exit;
	}

4278 4279 4280 4281 4282 4283 4284
	return QLA_SUCCESS;

mem_alloc_error_exit:
	qla4xxx_mem_free(ha);
	return QLA_ERROR;
}

4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295
/**
 * qla4_8xxx_check_temp - Check the ISP82XX temperature.
 * @ha: adapter block pointer.
 *
 * Note: The caller should not hold the idc lock.
 **/
static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
{
	uint32_t temp, temp_state, temp_val;
	int status = QLA_SUCCESS;

4296
	temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320

	temp_state = qla82xx_get_temp_state(temp);
	temp_val = qla82xx_get_temp_val(temp);

	if (temp_state == QLA82XX_TEMP_PANIC) {
		ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
			   " exceeds maximum allowed. Hardware has been shut"
			   " down.\n", temp_val);
		status = QLA_ERROR;
	} else if (temp_state == QLA82XX_TEMP_WARN) {
		if (ha->temperature == QLA82XX_TEMP_NORMAL)
			ql4_printk(KERN_WARNING, ha, "Device temperature %d"
				   " degrees C exceeds operating range."
				   " Immediate action needed.\n", temp_val);
	} else {
		if (ha->temperature == QLA82XX_TEMP_WARN)
			ql4_printk(KERN_INFO, ha, "Device temperature is"
				   " now %d degrees C in normal range.\n",
				   temp_val);
	}
	ha->temperature = temp_state;
	return status;
}

4321 4322 4323 4324 4325 4326
/**
 * qla4_8xxx_check_fw_alive  - Check firmware health
 * @ha: Pointer to host adapter structure.
 *
 * Context: Interrupt
 **/
4327
static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
4328
{
4329 4330
	uint32_t fw_heartbeat_counter;
	int status = QLA_SUCCESS;
4331

4332 4333
	fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
						   QLA8XXX_PEG_ALIVE_COUNTER);
4334 4335 4336 4337 4338
	/* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
	if (fw_heartbeat_counter == 0xffffffff) {
		DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
		    "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
		    ha->host_no, __func__));
4339
		return status;
4340
	}
4341 4342 4343 4344 4345 4346

	if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
		ha->seconds_since_last_heartbeat++;
		/* FW not alive after 2 seconds */
		if (ha->seconds_since_last_heartbeat == 2) {
			ha->seconds_since_last_heartbeat = 0;
4347
			qla4_8xxx_dump_peg_reg(ha);
4348
			status = QLA_ERROR;
4349
		}
4350 4351 4352
	} else
		ha->seconds_since_last_heartbeat = 0;

4353
	ha->fw_heartbeat_counter = fw_heartbeat_counter;
4354
	return status;
4355 4356
}

4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375
static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
{
	uint32_t halt_status;
	int halt_status_unrecoverable = 0;

	halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);

	if (is_qla8022(ha)) {
		ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
			   __func__);
		qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
				CRB_NIU_XG_PAUSE_CTL_P0 |
				CRB_NIU_XG_PAUSE_CTL_P1);

		if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
			ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
				   __func__);
		if (halt_status & HALT_STATUS_UNRECOVERABLE)
			halt_status_unrecoverable = 1;
4376
	} else if (is_qla8032(ha) || is_qla8042(ha)) {
4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398
		if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
			ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
				   __func__);
		else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
			halt_status_unrecoverable = 1;
	}

	/*
	 * Since we cannot change dev_state in interrupt context,
	 * set appropriate DPC flag then wakeup DPC
	 */
	if (halt_status_unrecoverable) {
		set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
	} else {
		ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
			   __func__);
		set_bit(DPC_RESET_HA, &ha->dpc_flags);
	}
	qla4xxx_mailbox_premature_completion(ha);
	qla4xxx_wake_dpc(ha);
}

4399 4400 4401 4402 4403 4404 4405 4406
/**
 * qla4_8xxx_watchdog - Poll dev state
 * @ha: Pointer to host adapter structure.
 *
 * Context: Interrupt
 **/
void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
{
4407
	uint32_t dev_state;
4408
	uint32_t idc_ctrl;
4409

4410 4411 4412 4413 4414
	if (is_qla8032(ha) &&
	    (qla4_83xx_is_detached(ha) == QLA_SUCCESS))
		WARN_ONCE(1, "%s: iSCSI function %d marked invisible\n",
			  __func__, ha->func_num);

4415
	/* don't poll if reset is going on */
4416 4417
	if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
	    test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4418
	    test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
4419
		dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
4420 4421

		if (qla4_8xxx_check_temp(ha)) {
4422 4423 4424 4425 4426 4427
			if (is_qla8022(ha)) {
				ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
				qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
						CRB_NIU_XG_PAUSE_CTL_P0 |
						CRB_NIU_XG_PAUSE_CTL_P1);
			}
4428 4429
			set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
			qla4xxx_wake_dpc(ha);
4430
		} else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
4431
			   !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4432 4433 4434 4435

			ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
				   __func__);

4436
			if (is_qla8032(ha) || is_qla8042(ha)) {
4437 4438 4439 4440 4441 4442 4443 4444 4445 4446
				idc_ctrl = qla4_83xx_rd_reg(ha,
							QLA83XX_IDC_DRV_CTRL);
				if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
					ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
						   __func__);
					qla4xxx_mailbox_premature_completion(
									    ha);
				}
			}

4447
			if ((is_qla8032(ha) || is_qla8042(ha)) ||
4448
			    (is_qla8022(ha) && !ql4xdontresethba)) {
4449 4450 4451
				set_bit(DPC_RESET_HA, &ha->dpc_flags);
				qla4xxx_wake_dpc(ha);
			}
4452
		} else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
4453
		    !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4454 4455
			ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
			    __func__);
4456 4457 4458 4459
			set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
			qla4xxx_wake_dpc(ha);
		} else  {
			/* Check firmware health */
4460 4461
			if (qla4_8xxx_check_fw_alive(ha))
				qla4_8xxx_process_fw_error(ha);
4462 4463 4464 4465
		}
	}
}

4466
static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;

	if (!(ddb_entry->ddb_type == FLASH_DDB))
		return;

	if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
	    !iscsi_is_session_online(cls_sess)) {
		if (atomic_read(&ddb_entry->retry_relogin_timer) !=
		    INVALID_ENTRY) {
			if (atomic_read(&ddb_entry->retry_relogin_timer) ==
					0) {
				atomic_set(&ddb_entry->retry_relogin_timer,
					   INVALID_ENTRY);
				set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
				set_bit(DF_RELOGIN, &ddb_entry->flags);
				DEBUG2(ql4_printk(KERN_INFO, ha,
				       "%s: index [%d] login device\n",
					__func__, ddb_entry->fw_ddb_index));
			} else
				atomic_dec(&ddb_entry->retry_relogin_timer);
		}
	}

	/* Wait for relogin to timeout */
	if (atomic_read(&ddb_entry->relogin_timer) &&
	    (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
		/*
		 * If the relogin times out and the device is
		 * still NOT ONLINE then try and relogin again.
		 */
		if (!iscsi_is_session_online(cls_sess)) {
			/* Reset retry relogin timer */
			atomic_inc(&ddb_entry->relogin_retry_count);
			DEBUG2(ql4_printk(KERN_INFO, ha,
				"%s: index[%d] relogin timed out-retrying"
				" relogin (%d), retry (%d)\n", __func__,
				ddb_entry->fw_ddb_index,
				atomic_read(&ddb_entry->relogin_retry_count),
				ddb_entry->default_time2wait + 4));
			set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
			atomic_set(&ddb_entry->retry_relogin_timer,
				   ddb_entry->default_time2wait + 4);
		}
	}
}

4520 4521 4522 4523
/**
 * qla4xxx_timer - checks every second for work to do.
 * @ha: Pointer to host adapter structure.
 **/
4524
static void qla4xxx_timer(struct timer_list *t)
4525
{
4526
	struct scsi_qla_host *ha = from_timer(ha, t, timer);
4527
	int start_dpc = 0;
4528 4529
	uint16_t w;

4530 4531
	iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);

4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542
	/* If we are in the middle of AER/EEH processing
	 * skip any processing and reschedule the timer
	 */
	if (test_bit(AF_EEH_BUSY, &ha->flags)) {
		mod_timer(&ha->timer, jiffies + HZ);
		return;
	}

	/* Hardware read to trigger an EEH error during mailbox waits. */
	if (!pci_channel_offline(ha->pdev))
		pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
4543

4544
	if (is_qla80XX(ha))
4545 4546
		qla4_8xxx_watchdog(ha);

4547
	if (is_qla40XX(ha)) {
4548 4549 4550 4551 4552 4553 4554 4555
		/* Check for heartbeat interval. */
		if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
		    ha->heartbeat_interval != 0) {
			ha->seconds_since_last_heartbeat++;
			if (ha->seconds_since_last_heartbeat >
			    ha->heartbeat_interval + 2)
				set_bit(DPC_RESET_HA, &ha->dpc_flags);
		}
4556 4557
	}

4558 4559 4560 4561
	/* Process any deferred work. */
	if (!list_empty(&ha->work_list))
		start_dpc++;

4562
	/* Wakeup the dpc routine for this adapter, if needed. */
4563
	if (start_dpc ||
4564 4565 4566
	     test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
	     test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
	     test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
4567
	     test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4568 4569
	     test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
	     test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
4570
	     test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
4571 4572
	     test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
	     test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4573
	     test_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags) ||
4574
	     test_bit(DPC_AEN, &ha->dpc_flags)) {
4575 4576 4577
		DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
			      " - dpc flags = 0x%lx\n",
			      ha->host_no, __func__, ha->dpc_flags));
4578
		qla4xxx_wake_dpc(ha);
4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598
	}

	/* Reschedule timer thread to call us back in one second */
	mod_timer(&ha->timer, jiffies + HZ);

	DEBUG2(ha->seconds_since_last_intr++);
}

/**
 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
 * @ha: Pointer to host adapter structure.
 *
 * This routine stalls the driver until all outstanding commands are returned.
 * Caller must release the Hardware Lock prior to calling this routine.
 **/
static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
{
	uint32_t index = 0;
	unsigned long flags;
	struct scsi_cmnd *cmd;
4599 4600
	unsigned long wtime;
	uint32_t wtmo;
4601

4602 4603 4604 4605 4606 4607
	if (is_qla40XX(ha))
		wtmo = WAIT_CMD_TOV;
	else
		wtmo = ha->nx_reset_timeout / 2;

	wtime = jiffies + (wtmo * HZ);
4608

4609 4610 4611
	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Wait up to %u seconds for cmds to complete\n",
			  wtmo));
4612 4613

	while (!time_after_eq(jiffies, wtime)) {
4614 4615 4616 4617
		spin_lock_irqsave(&ha->hardware_lock, flags);
		/* Find a command that hasn't completed. */
		for (index = 0; index < ha->host->can_queue; index++) {
			cmd = scsi_host_find_tag(ha->host, index);
4618 4619 4620 4621 4622 4623 4624
			/*
			 * We cannot just check if the index is valid,
			 * becase if we are run from the scsi eh, then
			 * the scsi/block layer is going to prevent
			 * the tag from being released.
			 */
			if (cmd != NULL && CMD_SP(cmd))
4625 4626 4627 4628 4629
				break;
		}
		spin_unlock_irqrestore(&ha->hardware_lock, flags);

		/* If No Commands are pending, wait is complete */
4630 4631
		if (index == ha->host->can_queue)
			return QLA_SUCCESS;
4632

4633 4634 4635 4636 4637
		msleep(1000);
	}
	/* If we timed out on waiting for commands to come back
	 * return ERROR. */
	return QLA_ERROR;
4638 4639
}

4640
int qla4xxx_hw_reset(struct scsi_qla_host *ha)
4641 4642
{
	uint32_t ctrl_status;
D
David C Somayajulu 已提交
4643 4644 4645
	unsigned long flags = 0;

	DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
4646

4647 4648 4649
	if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
		return QLA_ERROR;

4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664
	spin_lock_irqsave(&ha->hardware_lock, flags);

	/*
	 * If the SCSI Reset Interrupt bit is set, clear it.
	 * Otherwise, the Soft Reset won't work.
	 */
	ctrl_status = readw(&ha->reg->ctrl_status);
	if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
		writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);

	/* Issue Soft Reset */
	writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
	readl(&ha->reg->ctrl_status);

	spin_unlock_irqrestore(&ha->hardware_lock, flags);
4665
	return QLA_SUCCESS;
D
David C Somayajulu 已提交
4666 4667 4668 4669 4670 4671 4672 4673 4674 4675
}

/**
 * qla4xxx_soft_reset - performs soft reset.
 * @ha: Pointer to host adapter structure.
 **/
int qla4xxx_soft_reset(struct scsi_qla_host *ha)
{
	uint32_t max_wait_time;
	unsigned long flags = 0;
4676
	int status;
D
David C Somayajulu 已提交
4677 4678
	uint32_t ctrl_status;

4679 4680 4681
	status = qla4xxx_hw_reset(ha);
	if (status != QLA_SUCCESS)
		return status;
4682

4683
	status = QLA_ERROR;
4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766
	/* Wait until the Network Reset Intr bit is cleared */
	max_wait_time = RESET_INTR_TOV;
	do {
		spin_lock_irqsave(&ha->hardware_lock, flags);
		ctrl_status = readw(&ha->reg->ctrl_status);
		spin_unlock_irqrestore(&ha->hardware_lock, flags);

		if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
			break;

		msleep(1000);
	} while ((--max_wait_time));

	if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
		DEBUG2(printk(KERN_WARNING
			      "scsi%ld: Network Reset Intr not cleared by "
			      "Network function, clearing it now!\n",
			      ha->host_no));
		spin_lock_irqsave(&ha->hardware_lock, flags);
		writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
		readl(&ha->reg->ctrl_status);
		spin_unlock_irqrestore(&ha->hardware_lock, flags);
	}

	/* Wait until the firmware tells us the Soft Reset is done */
	max_wait_time = SOFT_RESET_TOV;
	do {
		spin_lock_irqsave(&ha->hardware_lock, flags);
		ctrl_status = readw(&ha->reg->ctrl_status);
		spin_unlock_irqrestore(&ha->hardware_lock, flags);

		if ((ctrl_status & CSR_SOFT_RESET) == 0) {
			status = QLA_SUCCESS;
			break;
		}

		msleep(1000);
	} while ((--max_wait_time));

	/*
	 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
	 * after the soft reset has taken place.
	 */
	spin_lock_irqsave(&ha->hardware_lock, flags);
	ctrl_status = readw(&ha->reg->ctrl_status);
	if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
		writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
		readl(&ha->reg->ctrl_status);
	}
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

	/* If soft reset fails then most probably the bios on other
	 * function is also enabled.
	 * Since the initialization is sequential the other fn
	 * wont be able to acknowledge the soft reset.
	 * Issue a force soft reset to workaround this scenario.
	 */
	if (max_wait_time == 0) {
		/* Issue Force Soft Reset */
		spin_lock_irqsave(&ha->hardware_lock, flags);
		writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
		readl(&ha->reg->ctrl_status);
		spin_unlock_irqrestore(&ha->hardware_lock, flags);
		/* Wait until the firmware tells us the Soft Reset is done */
		max_wait_time = SOFT_RESET_TOV;
		do {
			spin_lock_irqsave(&ha->hardware_lock, flags);
			ctrl_status = readw(&ha->reg->ctrl_status);
			spin_unlock_irqrestore(&ha->hardware_lock, flags);

			if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
				status = QLA_SUCCESS;
				break;
			}

			msleep(1000);
		} while ((--max_wait_time));
	}

	return status;
}

/**
4767
 * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
4768
 * @ha: Pointer to host adapter structure.
4769
 * @res: returned scsi status
4770 4771 4772 4773 4774 4775
 *
 * This routine is called just prior to a HARD RESET to return all
 * outstanding commands back to the Operating System.
 * Caller should make sure that the following locks are released
 * before this calling routine: Hardware lock, and io_request_lock.
 **/
4776
static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
4777 4778 4779 4780 4781 4782 4783 4784 4785
{
	struct srb *srb;
	int i;
	unsigned long flags;

	spin_lock_irqsave(&ha->hardware_lock, flags);
	for (i = 0; i < ha->host->can_queue; i++) {
		srb = qla4xxx_del_from_active_array(ha, i);
		if (srb != NULL) {
4786
			srb->cmd->result = res;
4787
			kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4788 4789 4790 4791 4792
		}
	}
	spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804
void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
{
	clear_bit(AF_ONLINE, &ha->flags);

	/* Disable the board */
	ql4_printk(KERN_INFO, ha, "Disabling the board\n");

	qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
	qla4xxx_mark_all_devices_missing(ha);
	clear_bit(AF_INIT_DONE, &ha->flags);
}

4805 4806 4807 4808 4809 4810 4811 4812
static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;

	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;
	ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
4813 4814 4815 4816 4817 4818

	if (ddb_entry->ddb_type == FLASH_DDB)
		iscsi_block_session(ddb_entry->sess);
	else
		iscsi_session_failure(cls_session->dd_data,
				      ISCSI_ERR_CONN_FAILED);
4819 4820
}

4821 4822 4823 4824
/**
 * qla4xxx_recover_adapter - recovers adapter after a fatal error
 * @ha: Pointer to host adapter structure.
 **/
4825
static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
4826
{
4827 4828
	int status = QLA_ERROR;
	uint8_t reset_chip = 0;
4829
	uint32_t dev_state;
4830
	unsigned long wait;
4831 4832

	/* Stall incoming I/O until we are done */
4833
	scsi_block_requests(ha->host);
4834
	clear_bit(AF_ONLINE, &ha->flags);
4835
	clear_bit(AF_LINK_UP, &ha->flags);
4836

4837
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
4838

4839
	set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4840

4841
	if ((is_qla8032(ha) || is_qla8042(ha)) &&
4842 4843 4844 4845 4846 4847 4848
	    !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
		ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
			   __func__);
		/* disable pause frame for ISP83xx */
		qla4_83xx_disable_pause(ha);
	}

4849 4850
	iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);

4851 4852
	if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
		reset_chip = 1;
4853

4854 4855 4856 4857 4858 4859
	/* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
	 * do not reset adapter, jump to initialize_adapter */
	if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
		status = QLA_SUCCESS;
		goto recover_ha_init_adapter;
	}
4860

4861
	/* For the ISP-8xxx adapter, issue a stop_firmware if invoked
4862
	 * from eh_host_reset or ioctl module */
4863
	if (is_qla80XX(ha) && !reset_chip &&
4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881
	    test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {

		DEBUG2(ql4_printk(KERN_INFO, ha,
		    "scsi%ld: %s - Performing stop_firmware...\n",
		    ha->host_no, __func__));
		status = ha->isp_ops->reset_firmware(ha);
		if (status == QLA_SUCCESS) {
			ha->isp_ops->disable_intrs(ha);
			qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
			qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
		} else {
			/* If the stop_firmware fails then
			 * reset the entire chip */
			reset_chip = 1;
			clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
			set_bit(DPC_RESET_HA, &ha->dpc_flags);
		}
	}
4882

4883
	/* Issue full chip reset if recovering from a catastrophic error,
4884
	 * or if stop_firmware fails for ISP-8xxx.
4885
	 * This is the default case for ISP-4xxx */
4886 4887
	if (is_qla40XX(ha) || reset_chip) {
		if (is_qla40XX(ha))
4888 4889
			goto chip_reset;

4890
		/* Check if 8XXX firmware is alive or not
4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905
		 * We may have arrived here from NEED_RESET
		 * detection only */
		if (test_bit(AF_FW_RECOVERY, &ha->flags))
			goto chip_reset;

		wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
		while (time_before(jiffies, wait)) {
			if (qla4_8xxx_check_fw_alive(ha)) {
				qla4xxx_mailbox_premature_completion(ha);
				break;
			}

			set_current_state(TASK_UNINTERRUPTIBLE);
			schedule_timeout(HZ);
		}
4906
chip_reset:
4907 4908
		if (!test_bit(AF_FW_RECOVERY, &ha->flags))
			qla4xxx_cmd_wait(ha);
4909

4910 4911 4912 4913 4914
		qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
		DEBUG2(ql4_printk(KERN_INFO, ha,
		    "scsi%ld: %s - Performing chip reset..\n",
		    ha->host_no, __func__));
		status = ha->isp_ops->reset_chip(ha);
4915
		qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4916
	}
4917 4918 4919 4920

	/* Flush any pending ddb changed AENs */
	qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);

4921 4922
recover_ha_init_adapter:
	/* Upon successful firmware/chip reset, re-initialize the adapter */
4923
	if (status == QLA_SUCCESS) {
4924 4925 4926
		/* For ISP-4xxx, force function 1 to always initialize
		 * before function 3 to prevent both funcions from
		 * stepping on top of the other */
4927
		if (is_qla40XX(ha) && (ha->mac_index == 3))
4928 4929 4930
			ssleep(6);

		/* NOTE: AF_ONLINE flag set upon successful completion of
4931
		 * qla4xxx_initialize_adapter */
4932
		status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945
		if (is_qla80XX(ha) && (status == QLA_ERROR)) {
			status = qla4_8xxx_check_init_adapter_retry(ha);
			if (status == QLA_ERROR) {
				ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Don't retry recover adapter\n",
					   ha->host_no, __func__);
				qla4xxx_dead_adapter_cleanup(ha);
				clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
				clear_bit(DPC_RESET_HA, &ha->dpc_flags);
				clear_bit(DPC_RESET_HA_FW_CONTEXT,
					  &ha->dpc_flags);
				goto exit_recover;
			}
		}
4946 4947
	}

4948 4949 4950 4951 4952
	/* Retry failed adapter initialization, if necessary
	 * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
	 * case to prevent ping-pong resets between functions */
	if (!test_bit(AF_ONLINE, &ha->flags) &&
	    !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4953
		/* Adapter initialization failed, see if we can retry
4954 4955 4956 4957
		 * resetting the ha.
		 * Since we don't want to block the DPC for too long
		 * with multiple resets in the same thread,
		 * utilize DPC to retry */
4958
		if (is_qla80XX(ha)) {
4959 4960 4961 4962
			ha->isp_ops->idc_lock(ha);
			dev_state = qla4_8xxx_rd_direct(ha,
							QLA8XXX_CRB_DEV_STATE);
			ha->isp_ops->idc_unlock(ha);
4963
			if (dev_state == QLA8XXX_DEV_FAILED) {
4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977
				ql4_printk(KERN_INFO, ha, "%s: don't retry "
					   "recover adapter. H/W is in Failed "
					   "state\n", __func__);
				qla4xxx_dead_adapter_cleanup(ha);
				clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
				clear_bit(DPC_RESET_HA, &ha->dpc_flags);
				clear_bit(DPC_RESET_HA_FW_CONTEXT,
						&ha->dpc_flags);
				status = QLA_ERROR;

				goto exit_recover;
			}
		}

4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001
		if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
			ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
			DEBUG2(printk("scsi%ld: recover adapter - retrying "
				      "(%d) more times\n", ha->host_no,
				      ha->retry_reset_ha_cnt));
			set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
			status = QLA_ERROR;
		} else {
			if (ha->retry_reset_ha_cnt > 0) {
				/* Schedule another Reset HA--DPC will retry */
				ha->retry_reset_ha_cnt--;
				DEBUG2(printk("scsi%ld: recover adapter - "
					      "retry remaining %d\n",
					      ha->host_no,
					      ha->retry_reset_ha_cnt));
				status = QLA_ERROR;
			}

			if (ha->retry_reset_ha_cnt == 0) {
				/* Recover adapter retries have been exhausted.
				 * Adapter DEAD */
				DEBUG2(printk("scsi%ld: recover adapter "
					      "failed - board disabled\n",
					      ha->host_no));
5002
				qla4xxx_dead_adapter_cleanup(ha);
5003 5004
				clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
				clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5005
				clear_bit(DPC_RESET_HA_FW_CONTEXT,
5006 5007 5008 5009 5010 5011
					  &ha->dpc_flags);
				status = QLA_ERROR;
			}
		}
	} else {
		clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5012
		clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5013 5014 5015
		clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
	}

5016
exit_recover:
5017 5018
	ha->adapter_error_count++;

5019 5020 5021 5022 5023 5024 5025
	if (test_bit(AF_ONLINE, &ha->flags))
		ha->isp_ops->enable_intrs(ha);

	scsi_unblock_requests(ha->host);

	clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
	DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
L
Lucas De Marchi 已提交
5026
	    status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
5027 5028 5029 5030

	return status;
}

5031
static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
5032
{
5033 5034 5035
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
5036

5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047
	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	if (!iscsi_is_session_online(cls_session)) {
		if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
				   " unblock session\n", ha->host_no, __func__,
				   ddb_entry->fw_ddb_index);
			iscsi_unblock_session(ddb_entry->sess);
		} else {
			/* Trigger relogin */
5048
			if (ddb_entry->ddb_type == FLASH_DDB) {
5049 5050 5051
				if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
				      test_bit(DF_DISABLE_RELOGIN,
					       &ddb_entry->flags)))
5052 5053 5054 5055
					qla4xxx_arm_relogin_timer(ddb_entry);
			} else
				iscsi_session_failure(cls_session->dd_data,
						      ISCSI_ERR_CONN_FAILED);
5056 5057 5058 5059
		}
	}
}

5060 5061 5062 5063 5064 5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089
int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;

	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
		   " unblock session\n", ha->host_no, __func__,
		   ddb_entry->fw_ddb_index);

	iscsi_unblock_session(ddb_entry->sess);

	/* Start scan target */
	if (test_bit(AF_ONLINE, &ha->flags)) {
		ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
			   " start scan\n", ha->host_no, __func__,
			   ddb_entry->fw_ddb_index);
		scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
	}
	return QLA_SUCCESS;
}

int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;
5090
	int status = QLA_SUCCESS;
5091 5092 5093 5094 5095 5096 5097 5098

	sess = cls_session->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;
	ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
		   " unblock user space session\n", ha->host_no, __func__,
		   ddb_entry->fw_ddb_index);

5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111
	if (!iscsi_is_session_online(cls_session)) {
		iscsi_conn_start(ddb_entry->conn);
		iscsi_conn_login_event(ddb_entry->conn,
				       ISCSI_CONN_STATE_LOGGED_IN);
	} else {
		ql4_printk(KERN_INFO, ha,
			   "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
			   ha->host_no, __func__, ddb_entry->fw_ddb_index,
			   cls_session->sid);
		status = QLA_ERROR;
	}

	return status;
5112 5113
}

5114 5115 5116 5117 5118
static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
{
	iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
}

5119 5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150 5151 5152 5153
static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
{
	uint16_t relogin_timer;
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;

	relogin_timer = max(ddb_entry->default_relogin_timeout,
			    (uint16_t)RELOGIN_TOV);
	atomic_set(&ddb_entry->relogin_timer, relogin_timer);

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
			  ddb_entry->fw_ddb_index, relogin_timer));

	qla4xxx_login_flash_ddb(cls_sess);
}

static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry;
	struct scsi_qla_host *ha;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;

	if (!(ddb_entry->ddb_type == FLASH_DDB))
		return;

5154 5155 5156
	if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
		return;

5157 5158 5159 5160 5161 5162 5163 5164
	if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
	    !iscsi_is_session_online(cls_sess)) {
		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "relogin issued\n"));
		qla4xxx_relogin_flash_ddb(cls_sess);
	}
}

5165 5166
void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
{
5167
	if (ha->dpc_thread)
5168 5169 5170
		queue_work(ha->dpc_thread, &ha->dpc_work);
}

5171 5172 5173 5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216
static struct qla4_work_evt *
qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
		   enum qla4_work_type type)
{
	struct qla4_work_evt *e;
	uint32_t size = sizeof(struct qla4_work_evt) + data_size;

	e = kzalloc(size, GFP_ATOMIC);
	if (!e)
		return NULL;

	INIT_LIST_HEAD(&e->list);
	e->type = type;
	return e;
}

static void qla4xxx_post_work(struct scsi_qla_host *ha,
			     struct qla4_work_evt *e)
{
	unsigned long flags;

	spin_lock_irqsave(&ha->work_lock, flags);
	list_add_tail(&e->list, &ha->work_list);
	spin_unlock_irqrestore(&ha->work_lock, flags);
	qla4xxx_wake_dpc(ha);
}

int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
			  enum iscsi_host_event_code aen_code,
			  uint32_t data_size, uint8_t *data)
{
	struct qla4_work_evt *e;

	e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
	if (!e)
		return QLA_ERROR;

	e->u.aen.code = aen_code;
	e->u.aen.data_size = data_size;
	memcpy(e->u.aen.data, data, data_size);

	qla4xxx_post_work(ha, e);

	return QLA_SUCCESS;
}

5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236
int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
			       uint32_t status, uint32_t pid,
			       uint32_t data_size, uint8_t *data)
{
	struct qla4_work_evt *e;

	e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
	if (!e)
		return QLA_ERROR;

	e->u.ping.status = status;
	e->u.ping.pid = pid;
	e->u.ping.data_size = data_size;
	memcpy(e->u.ping.data, data, data_size);

	qla4xxx_post_work(ha, e);

	return QLA_SUCCESS;
}

5237
static void qla4xxx_do_work(struct scsi_qla_host *ha)
5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257
{
	struct qla4_work_evt *e, *tmp;
	unsigned long flags;
	LIST_HEAD(work);

	spin_lock_irqsave(&ha->work_lock, flags);
	list_splice_init(&ha->work_list, &work);
	spin_unlock_irqrestore(&ha->work_lock, flags);

	list_for_each_entry_safe(e, tmp, &work, list) {
		list_del_init(&e->list);

		switch (e->type) {
		case QLA4_EVENT_AEN:
			iscsi_post_host_event(ha->host_no,
					      &qla4xxx_iscsi_transport,
					      e->u.aen.code,
					      e->u.aen.data_size,
					      e->u.aen.data);
			break;
5258 5259 5260 5261 5262 5263 5264 5265
		case QLA4_EVENT_PING_STATUS:
			iscsi_ping_comp_event(ha->host_no,
					      &qla4xxx_iscsi_transport,
					      e->u.ping.status,
					      e->u.ping.pid,
					      e->u.ping.data_size,
					      e->u.ping.data);
			break;
5266 5267 5268 5269 5270 5271 5272 5273
		default:
			ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
				   "supported", e->type);
		}
		kfree(e);
	}
}

5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284
/**
 * qla4xxx_do_dpc - dpc routine
 * @data: in our case pointer to adapter structure
 *
 * This routine is a task that is schedule by the interrupt handler
 * to perform the background processing for interrupts.  We put it
 * on a task queue that is consumed whenever the scheduler runs; that's
 * so you can do anything (i.e. put the process to sleep etc).  In fact,
 * the mid-level tries to sleep when it reaches the driver threshold
 * "host->can_queue". This can cause a panic if we were in our interrupt code.
 **/
D
David Howells 已提交
5285
static void qla4xxx_do_dpc(struct work_struct *work)
5286
{
D
David Howells 已提交
5287 5288
	struct scsi_qla_host *ha =
		container_of(work, struct scsi_qla_host, dpc_work);
D
David C Somayajulu 已提交
5289
	int status = QLA_ERROR;
5290

5291 5292 5293
	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "scsi%ld: %s: DPC handler waking up. flags = 0x%08lx, dpc_flags = 0x%08lx\n",
			  ha->host_no, __func__, ha->flags, ha->dpc_flags));
5294 5295 5296

	/* Initialization not yet finished. Don't do anything yet. */
	if (!test_bit(AF_INIT_DONE, &ha->flags))
5297
		return;
5298

5299 5300 5301
	if (test_bit(AF_EEH_BUSY, &ha->flags)) {
		DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
		    ha->host_no, __func__, ha->flags));
5302
		return;
5303 5304
	}

5305 5306 5307
	/* post events to application */
	qla4xxx_do_work(ha);

5308
	if (is_qla80XX(ha)) {
5309
		if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
5310
			if (is_qla8032(ha) || is_qla8042(ha)) {
5311 5312 5313 5314 5315 5316
				ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
					   __func__);
				/* disable pause frame for ISP83xx */
				qla4_83xx_disable_pause(ha);
			}

5317 5318 5319 5320
			ha->isp_ops->idc_lock(ha);
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
					    QLA8XXX_DEV_FAILED);
			ha->isp_ops->idc_unlock(ha);
5321 5322 5323
			ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
			qla4_8xxx_device_state_handler(ha);
		}
5324

5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338
		if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
			if (is_qla8042(ha)) {
				if (ha->idc_info.info2 &
				    ENABLE_INTERNAL_LOOPBACK) {
					ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
						   __func__);
					status = qla4_84xx_config_acb(ha,
							    ACB_CONFIG_DISABLE);
					if (status != QLA_SUCCESS) {
						ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
							   __func__);
					}
				}
			}
5339
			qla4_83xx_post_idc_ack(ha);
5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353
			clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
		}

		if (is_qla8042(ha) &&
		    test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
			ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
				   __func__);
			if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
			    QLA_SUCCESS) {
				ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
					   __func__);
			}
			clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
		}
5354

5355 5356 5357 5358 5359 5360 5361
		if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
			qla4_8xxx_need_qsnt_handler(ha);
		}
	}

	if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
	    (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
5362
	    test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
5363
	    test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
5364
		if ((is_qla8022(ha) && ql4xdontresethba) ||
5365 5366
		    ((is_qla8032(ha) || is_qla8042(ha)) &&
		     qla4_83xx_idc_dontreset(ha))) {
5367 5368 5369 5370 5371 5372 5373 5374 5375 5376
			DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
			    ha->host_no, __func__));
			clear_bit(DPC_RESET_HA, &ha->dpc_flags);
			clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
			clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
			goto dpc_post_reset_ha;
		}
		if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
		    test_bit(DPC_RESET_HA, &ha->dpc_flags))
			qla4xxx_recover_adapter(ha);
5377

D
David C Somayajulu 已提交
5378
		if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390
			uint8_t wait_time = RESET_INTR_TOV;

			while ((readw(&ha->reg->ctrl_status) &
				(CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
				if (--wait_time == 0)
					break;
				msleep(1000);
			}
			if (wait_time == 0)
				DEBUG2(printk("scsi%ld: %s: SR|FSR "
					      "bit not cleared-- resetting\n",
					      ha->host_no, __func__));
5391
			qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
D
David C Somayajulu 已提交
5392 5393
			if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
				qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5394
				status = qla4xxx_recover_adapter(ha);
D
David C Somayajulu 已提交
5395 5396 5397
			}
			clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
			if (status == QLA_SUCCESS)
5398
				ha->isp_ops->enable_intrs(ha);
5399 5400 5401
		}
	}

5402
dpc_post_reset_ha:
5403 5404 5405 5406 5407 5408 5409 5410
	/* ---- process AEN? --- */
	if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
		qla4xxx_process_aen(ha, PROCESS_ALL_AENS);

	/* ---- Get DHCP IP Address? --- */
	if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
		qla4xxx_get_dhcp_ip_address(ha);

5411 5412 5413 5414 5415 5416
	/* ---- relogin device? --- */
	if (adapter_up(ha) &&
	    test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
		iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
	}

5417
	/* ---- link change? --- */
5418 5419
	if (!test_bit(AF_LOOPBACK, &ha->flags) &&
	    test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
5420 5421
		if (!test_bit(AF_LINK_UP, &ha->flags)) {
			/* ---- link down? --- */
5422
			qla4xxx_mark_all_devices_missing(ha);
5423 5424 5425 5426 5427 5428 5429
		} else {
			/* ---- link up? --- *
			 * F/W will auto login to all devices ONLY ONCE after
			 * link up during driver initialization and runtime
			 * fatal error recovery.  Therefore, the driver must
			 * manually relogin to devices when recovering from
			 * connection failures, logouts, expired KATO, etc. */
5430 5431 5432 5433 5434 5435
			if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
				qla4xxx_build_ddb_list(ha, ha->is_reset);
				iscsi_host_for_each_session(ha->host,
						qla4xxx_login_flash_ddb);
			} else
				qla4xxx_relogin_all_devices(ha);
5436 5437
		}
	}
5438 5439 5440 5441 5442
	if (test_and_clear_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags)) {
		if (qla4xxx_sysfs_ddb_export(ha))
			ql4_printk(KERN_ERR, ha, "%s: Error exporting ddb to sysfs\n",
				   __func__);
	}
5443 5444 5445 5446 5447 5448 5449 5450
}

/**
 * qla4xxx_free_adapter - release the adapter
 * @ha: pointer to adapter structure
 **/
static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
{
5451
	qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5452

5453 5454
	/* Turn-off interrupts on the card. */
	ha->isp_ops->disable_intrs(ha);
5455

5456 5457 5458 5459 5460
	if (is_qla40XX(ha)) {
		writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
		       &ha->reg->ctrl_status);
		readl(&ha->reg->ctrl_status);
	} else if (is_qla8022(ha)) {
5461 5462
		writel(0, &ha->qla4_82xx_reg->host_int);
		readl(&ha->qla4_82xx_reg->host_int);
5463
	} else if (is_qla8032(ha) || is_qla8042(ha)) {
5464 5465
		writel(0, &ha->qla4_83xx_reg->risc_intr);
		readl(&ha->qla4_83xx_reg->risc_intr);
5466 5467
	}

5468 5469 5470 5471
	/* Remove timer thread, if present */
	if (ha->timer_active)
		qla4xxx_stop_timer(ha);

5472 5473 5474 5475
	/* Kill the kernel thread for this host */
	if (ha->dpc_thread)
		destroy_workqueue(ha->dpc_thread);

5476 5477 5478 5479
	/* Kill the kernel thread for this host */
	if (ha->task_wq)
		destroy_workqueue(ha->task_wq);

5480 5481
	/* Put firmware in known state */
	ha->isp_ops->reset_firmware(ha);
5482

5483
	if (is_qla80XX(ha)) {
5484
		ha->isp_ops->idc_lock(ha);
5485
		qla4_8xxx_clear_drv_active(ha);
5486
		ha->isp_ops->idc_unlock(ha);
5487
	}
5488 5489

	/* Detach interrupts */
5490
	qla4xxx_free_irqs(ha);
5491

5492 5493
	/* free extra memory */
	qla4xxx_mem_free(ha);
5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510
}

int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
{
	int status = 0;
	unsigned long mem_base, mem_len, db_base, db_len;
	struct pci_dev *pdev = ha->pdev;

	status = pci_request_regions(pdev, DRIVER_NAME);
	if (status) {
		printk(KERN_WARNING
		    "scsi(%ld) Failed to reserve PIO regions (%s) "
		    "status=%d\n", ha->host_no, pci_name(pdev), status);
		goto iospace_error_exit;
	}

	DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
5511 5512
	    __func__, pdev->revision));
	ha->revision_id = pdev->revision;
5513

5514 5515 5516 5517 5518
	/* remap phys address */
	mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
	mem_len = pci_resource_len(pdev, 0);
	DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
	    __func__, mem_base, mem_len));
5519

5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531
	/* mapping of pcibase pointer */
	ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
	if (!ha->nx_pcibase) {
		printk(KERN_ERR
		    "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
		pci_release_regions(ha->pdev);
		goto iospace_error_exit;
	}

	/* Mapping of IO base pointer, door bell read and write pointer */

	/* mapping of IO base pointer */
5532 5533 5534 5535 5536 5537
	if (is_qla8022(ha)) {
		ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
				    ((uint8_t *)ha->nx_pcibase + 0xbc000 +
				     (ha->pdev->devfn << 11));
		ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
				    QLA82XX_CAM_RAM_DB2);
5538
	} else if (is_qla8032(ha) || is_qla8042(ha)) {
5539 5540 5541
		ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
				    ((uint8_t *)ha->nx_pcibase);
	}
5542 5543 5544 5545

	db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
	db_len = pci_resource_len(pdev, 4);

5546
	return 0;
5547 5548
iospace_error_exit:
	return -ENOMEM;
5549 5550 5551 5552 5553 5554 5555 5556 5557
}

/***
 * qla4xxx_iospace_config - maps registers
 * @ha: pointer to adapter structure
 *
 * This routines maps HBA's registers from the pci address space
 * into the kernel virtual address space for memory mapped i/o.
 **/
5558
int qla4xxx_iospace_config(struct scsi_qla_host *ha)
5559 5560 5561 5562 5563 5564 5565 5566 5567
{
	unsigned long pio, pio_len, pio_flags;
	unsigned long mmio, mmio_len, mmio_flags;

	pio = pci_resource_start(ha->pdev, 0);
	pio_len = pci_resource_len(ha->pdev, 0);
	pio_flags = pci_resource_flags(ha->pdev, 0);
	if (pio_flags & IORESOURCE_IO) {
		if (pio_len < MIN_IOBASE_LEN) {
5568
			ql4_printk(KERN_WARNING, ha,
5569 5570 5571 5572
				"Invalid PCI I/O region size\n");
			pio = 0;
		}
	} else {
5573
		ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
5574 5575 5576 5577 5578 5579 5580 5581 5582
		pio = 0;
	}

	/* Use MMIO operations for all accesses. */
	mmio = pci_resource_start(ha->pdev, 1);
	mmio_len = pci_resource_len(ha->pdev, 1);
	mmio_flags = pci_resource_flags(ha->pdev, 1);

	if (!(mmio_flags & IORESOURCE_MEM)) {
5583 5584
		ql4_printk(KERN_ERR, ha,
		    "region #0 not an MMIO resource, aborting\n");
5585 5586 5587

		goto iospace_error_exit;
	}
5588

5589
	if (mmio_len < MIN_IOBASE_LEN) {
5590 5591
		ql4_printk(KERN_ERR, ha,
		    "Invalid PCI mem region size, aborting\n");
5592 5593 5594 5595
		goto iospace_error_exit;
	}

	if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
5596 5597
		ql4_printk(KERN_WARNING, ha,
		    "Failed to reserve PIO/MMIO regions\n");
5598 5599 5600 5601 5602 5603 5604 5605

		goto iospace_error_exit;
	}

	ha->pio_address = pio;
	ha->pio_length = pio_len;
	ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
	if (!ha->reg) {
5606 5607
		ql4_printk(KERN_ERR, ha,
		    "cannot remap MMIO, aborting\n");
5608 5609 5610 5611 5612 5613 5614 5615 5616 5617

		goto iospace_error_exit;
	}

	return 0;

iospace_error_exit:
	return -ENOMEM;
}

5618 5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632
static struct isp_operations qla4xxx_isp_ops = {
	.iospace_config         = qla4xxx_iospace_config,
	.pci_config             = qla4xxx_pci_config,
	.disable_intrs          = qla4xxx_disable_intrs,
	.enable_intrs           = qla4xxx_enable_intrs,
	.start_firmware         = qla4xxx_start_firmware,
	.intr_handler           = qla4xxx_intr_handler,
	.interrupt_service_routine = qla4xxx_interrupt_service_routine,
	.reset_chip             = qla4xxx_soft_reset,
	.reset_firmware         = qla4xxx_hw_reset,
	.queue_iocb             = qla4xxx_queue_iocb,
	.complete_iocb          = qla4xxx_complete_iocb,
	.rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
	.rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
	.get_sys_info           = qla4xxx_get_sys_info,
5633 5634
	.queue_mailbox_command	= qla4xxx_queue_mbox_cmd,
	.process_mailbox_interrupt = qla4xxx_process_mbox_intr,
5635 5636
};

5637
static struct isp_operations qla4_82xx_isp_ops = {
5638 5639
	.iospace_config         = qla4_8xxx_iospace_config,
	.pci_config             = qla4_8xxx_pci_config,
5640 5641
	.disable_intrs          = qla4_82xx_disable_intrs,
	.enable_intrs           = qla4_82xx_enable_intrs,
5642
	.start_firmware         = qla4_8xxx_load_risc,
5643
	.restart_firmware	= qla4_82xx_try_start_fw,
5644 5645
	.intr_handler           = qla4_82xx_intr_handler,
	.interrupt_service_routine = qla4_82xx_interrupt_service_routine,
5646
	.need_reset		= qla4_8xxx_need_reset,
5647
	.reset_chip             = qla4_82xx_isp_reset,
5648
	.reset_firmware         = qla4_8xxx_stop_firmware,
5649 5650 5651 5652
	.queue_iocb             = qla4_82xx_queue_iocb,
	.complete_iocb          = qla4_82xx_complete_iocb,
	.rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
	.rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
5653
	.get_sys_info           = qla4_8xxx_get_sys_info,
5654 5655 5656 5657 5658 5659 5660 5661 5662
	.rd_reg_direct		= qla4_82xx_rd_32,
	.wr_reg_direct		= qla4_82xx_wr_32,
	.rd_reg_indirect	= qla4_82xx_md_rd_32,
	.wr_reg_indirect	= qla4_82xx_md_wr_32,
	.idc_lock		= qla4_82xx_idc_lock,
	.idc_unlock		= qla4_82xx_idc_unlock,
	.rom_lock_recovery	= qla4_82xx_rom_lock_recovery,
	.queue_mailbox_command	= qla4_82xx_queue_mbox_cmd,
	.process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
5663 5664
};

5665 5666 5667 5668 5669 5670 5671 5672 5673 5674 5675 5676 5677 5678
static struct isp_operations qla4_83xx_isp_ops = {
	.iospace_config		= qla4_8xxx_iospace_config,
	.pci_config		= qla4_8xxx_pci_config,
	.disable_intrs		= qla4_83xx_disable_intrs,
	.enable_intrs		= qla4_83xx_enable_intrs,
	.start_firmware		= qla4_8xxx_load_risc,
	.restart_firmware	= qla4_83xx_start_firmware,
	.intr_handler		= qla4_83xx_intr_handler,
	.interrupt_service_routine = qla4_83xx_interrupt_service_routine,
	.need_reset		= qla4_8xxx_need_reset,
	.reset_chip		= qla4_83xx_isp_reset,
	.reset_firmware		= qla4_8xxx_stop_firmware,
	.queue_iocb		= qla4_83xx_queue_iocb,
	.complete_iocb		= qla4_83xx_complete_iocb,
5679 5680
	.rd_shdw_req_q_out	= qla4xxx_rd_shdw_req_q_out,
	.rd_shdw_rsp_q_in	= qla4xxx_rd_shdw_rsp_q_in,
5681 5682 5683 5684 5685 5686 5687 5688 5689 5690
	.get_sys_info		= qla4_8xxx_get_sys_info,
	.rd_reg_direct		= qla4_83xx_rd_reg,
	.wr_reg_direct		= qla4_83xx_wr_reg,
	.rd_reg_indirect	= qla4_83xx_rd_reg_indirect,
	.wr_reg_indirect	= qla4_83xx_wr_reg_indirect,
	.idc_lock		= qla4_83xx_drv_lock,
	.idc_unlock		= qla4_83xx_drv_unlock,
	.rom_lock_recovery	= qla4_83xx_rom_lock_recovery,
	.queue_mailbox_command	= qla4_83xx_queue_mbox_cmd,
	.process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
5691 5692 5693 5694 5695 5696 5697
};

uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
{
	return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
}

5698
uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5699
{
5700
	return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
5701 5702 5703 5704 5705 5706 5707
}

uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
{
	return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
}

5708
uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5709
{
5710
	return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
5711 5712
}

5713 5714 5715 5716 5717 5718 5719 5720 5721 5722 5723 5724 5725 5726 5727 5728 5729 5730 5731 5732 5733 5734 5735 5736
static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
{
	struct scsi_qla_host *ha = data;
	char *str = buf;
	int rc;

	switch (type) {
	case ISCSI_BOOT_ETH_FLAGS:
		rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
		break;
	case ISCSI_BOOT_ETH_INDEX:
		rc = sprintf(str, "0\n");
		break;
	case ISCSI_BOOT_ETH_MAC:
		rc = sysfs_format_mac(str, ha->my_mac,
				      MAC_ADDR_LEN);
		break;
	default:
		rc = -ENOSYS;
		break;
	}
	return rc;
}

5737
static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
5738 5739 5740 5741 5742 5743 5744 5745 5746 5747 5748 5749 5750 5751 5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770
{
	int rc;

	switch (type) {
	case ISCSI_BOOT_ETH_FLAGS:
	case ISCSI_BOOT_ETH_MAC:
	case ISCSI_BOOT_ETH_INDEX:
		rc = S_IRUGO;
		break;
	default:
		rc = 0;
		break;
	}
	return rc;
}

static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
{
	struct scsi_qla_host *ha = data;
	char *str = buf;
	int rc;

	switch (type) {
	case ISCSI_BOOT_INI_INITIATOR_NAME:
		rc = sprintf(str, "%s\n", ha->name_string);
		break;
	default:
		rc = -ENOSYS;
		break;
	}
	return rc;
}

5771
static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
5772 5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802 5803 5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814 5815 5816 5817 5818 5819 5820 5821 5822 5823 5824 5825 5826 5827 5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 5844 5845 5846 5847 5848 5849 5850 5851 5852 5853 5854 5855 5856 5857
{
	int rc;

	switch (type) {
	case ISCSI_BOOT_INI_INITIATOR_NAME:
		rc = S_IRUGO;
		break;
	default:
		rc = 0;
		break;
	}
	return rc;
}

static ssize_t
qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
			   char *buf)
{
	struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
	char *str = buf;
	int rc;

	switch (type) {
	case ISCSI_BOOT_TGT_NAME:
		rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
		break;
	case ISCSI_BOOT_TGT_IP_ADDR:
		if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
			rc = sprintf(buf, "%pI4\n",
				     &boot_conn->dest_ipaddr.ip_address);
		else
			rc = sprintf(str, "%pI6\n",
				     &boot_conn->dest_ipaddr.ip_address);
		break;
	case ISCSI_BOOT_TGT_PORT:
			rc = sprintf(str, "%d\n", boot_conn->dest_port);
		break;
	case ISCSI_BOOT_TGT_CHAP_NAME:
		rc = sprintf(str,  "%.*s\n",
			     boot_conn->chap.target_chap_name_length,
			     (char *)&boot_conn->chap.target_chap_name);
		break;
	case ISCSI_BOOT_TGT_CHAP_SECRET:
		rc = sprintf(str,  "%.*s\n",
			     boot_conn->chap.target_secret_length,
			     (char *)&boot_conn->chap.target_secret);
		break;
	case ISCSI_BOOT_TGT_REV_CHAP_NAME:
		rc = sprintf(str,  "%.*s\n",
			     boot_conn->chap.intr_chap_name_length,
			     (char *)&boot_conn->chap.intr_chap_name);
		break;
	case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
		rc = sprintf(str,  "%.*s\n",
			     boot_conn->chap.intr_secret_length,
			     (char *)&boot_conn->chap.intr_secret);
		break;
	case ISCSI_BOOT_TGT_FLAGS:
		rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
		break;
	case ISCSI_BOOT_TGT_NIC_ASSOC:
		rc = sprintf(str, "0\n");
		break;
	default:
		rc = -ENOSYS;
		break;
	}
	return rc;
}

static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
{
	struct scsi_qla_host *ha = data;
	struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);

	return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
}

static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
{
	struct scsi_qla_host *ha = data;
	struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);

	return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
}

5858
static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 5899 5900
{
	int rc;

	switch (type) {
	case ISCSI_BOOT_TGT_NAME:
	case ISCSI_BOOT_TGT_IP_ADDR:
	case ISCSI_BOOT_TGT_PORT:
	case ISCSI_BOOT_TGT_CHAP_NAME:
	case ISCSI_BOOT_TGT_CHAP_SECRET:
	case ISCSI_BOOT_TGT_REV_CHAP_NAME:
	case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
	case ISCSI_BOOT_TGT_NIC_ASSOC:
	case ISCSI_BOOT_TGT_FLAGS:
		rc = S_IRUGO;
		break;
	default:
		rc = 0;
		break;
	}
	return rc;
}

static void qla4xxx_boot_release(void *data)
{
	struct scsi_qla_host *ha = data;

	scsi_host_put(ha->host);
}

static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
{
	dma_addr_t buf_dma;
	uint32_t addr, pri_addr, sec_addr;
	uint32_t offset;
	uint16_t func_num;
	uint8_t val;
	uint8_t *buf = NULL;
	size_t size = 13 * sizeof(uint8_t);
	int ret = QLA_SUCCESS;

	func_num = PCI_FUNC(ha->pdev->devfn);

5901 5902
	ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
		   __func__, ha->pdev->device, func_num);
5903

5904
	if (is_qla40XX(ha)) {
5905 5906 5907 5908 5909 5910 5911 5912 5913 5914 5915 5916 5917 5918 5919 5920
		if (func_num == 1) {
			addr = NVRAM_PORT0_BOOT_MODE;
			pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
			sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
		} else if (func_num == 3) {
			addr = NVRAM_PORT1_BOOT_MODE;
			pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
			sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
		} else {
			ret = QLA_ERROR;
			goto exit_boot_info;
		}

		/* Check Boot Mode */
		val = rd_nvram_byte(ha, addr);
		if (!(val & 0x07)) {
5921 5922
			DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
					  "options : 0x%x\n", __func__, val));
5923 5924 5925 5926 5927 5928 5929 5930 5931 5932 5933 5934 5935 5936
			ret = QLA_ERROR;
			goto exit_boot_info;
		}

		/* get primary valid target index */
		val = rd_nvram_byte(ha, pri_addr);
		if (val & BIT_7)
			ddb_index[0] = (val & 0x7f);

		/* get secondary valid target index */
		val = rd_nvram_byte(ha, sec_addr);
		if (val & BIT_7)
			ddb_index[1] = (val & 0x7f);

5937
	} else if (is_qla80XX(ha)) {
5938 5939 5940 5941 5942 5943 5944 5945 5946 5947 5948 5949 5950 5951 5952 5953 5954 5955 5956 5957 5958 5959 5960
		buf = dma_alloc_coherent(&ha->pdev->dev, size,
					 &buf_dma, GFP_KERNEL);
		if (!buf) {
			DEBUG2(ql4_printk(KERN_ERR, ha,
					  "%s: Unable to allocate dma buffer\n",
					   __func__));
			ret = QLA_ERROR;
			goto exit_boot_info;
		}

		if (ha->port_num == 0)
			offset = BOOT_PARAM_OFFSET_PORT0;
		else if (ha->port_num == 1)
			offset = BOOT_PARAM_OFFSET_PORT1;
		else {
			ret = QLA_ERROR;
			goto exit_boot_info_free;
		}
		addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
		       offset;
		if (qla4xxx_get_flash(ha, buf_dma, addr,
				      13 * sizeof(uint8_t)) != QLA_SUCCESS) {
			DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
5961
					  " failed\n", ha->host_no, __func__));
5962 5963 5964 5965 5966
			ret = QLA_ERROR;
			goto exit_boot_info_free;
		}
		/* Check Boot Mode */
		if (!(buf[1] & 0x07)) {
5967 5968
			DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
					  " : 0x%x\n", buf[1]));
5969 5970 5971 5972 5973 5974 5975 5976 5977 5978 5979 5980 5981 5982 5983 5984 5985 5986 5987 5988 5989 5990 5991
			ret = QLA_ERROR;
			goto exit_boot_info_free;
		}

		/* get primary valid target index */
		if (buf[2] & BIT_7)
			ddb_index[0] = buf[2] & 0x7f;

		/* get secondary valid target index */
		if (buf[11] & BIT_7)
			ddb_index[1] = buf[11] & 0x7f;
	} else {
		ret = QLA_ERROR;
		goto exit_boot_info;
	}

	DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
			  " target ID %d\n", __func__, ddb_index[0],
			  ddb_index[1]));

exit_boot_info_free:
	dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
exit_boot_info:
5992 5993
	ha->pri_ddb_idx = ddb_index[0];
	ha->sec_ddb_idx = ddb_index[1];
5994 5995 5996
	return ret;
}

5997 5998 5999 6000 6001 6002 6003 6004 6005 6006 6007 6008 6009 6010 6011 6012 6013 6014
/**
 * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
 * @ha: pointer to adapter structure
 * @username: CHAP username to be returned
 * @password: CHAP password to be returned
 *
 * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
 * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
 * So from the CHAP cache find the first BIDI CHAP entry and set it
 * to the boot record in sysfs.
 **/
static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
			    char *password)
{
	int i, ret = -EINVAL;
	int max_chap_entries = 0;
	struct ql4_chap_table *chap_table;

6015
	if (is_qla80XX(ha))
6016 6017 6018 6019 6020 6021 6022 6023 6024 6025 6026 6027 6028 6029 6030 6031 6032 6033 6034 6035 6036 6037 6038 6039
		max_chap_entries = (ha->hw.flt_chap_size / 2) /
						sizeof(struct ql4_chap_table);
	else
		max_chap_entries = MAX_CHAP_ENTRIES_40XX;

	if (!ha->chap_list) {
		ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
		return ret;
	}

	mutex_lock(&ha->chap_sem);
	for (i = 0; i < max_chap_entries; i++) {
		chap_table = (struct ql4_chap_table *)ha->chap_list + i;
		if (chap_table->cookie !=
		    __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
			continue;
		}

		if (chap_table->flags & BIT_7) /* local */
			continue;

		if (!(chap_table->flags & BIT_6)) /* Not BIDI */
			continue;

6040 6041
		strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
		strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
6042 6043 6044 6045 6046 6047 6048 6049 6050
		ret = 0;
		break;
	}
	mutex_unlock(&ha->chap_sem);

	return ret;
}


6051 6052 6053 6054 6055 6056 6057 6058 6059 6060 6061 6062 6063 6064 6065 6066 6067 6068 6069 6070 6071 6072 6073
static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
				   struct ql4_boot_session_info *boot_sess,
				   uint16_t ddb_index)
{
	struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
	struct dev_db_entry *fw_ddb_entry;
	dma_addr_t fw_ddb_entry_dma;
	uint16_t idx;
	uint16_t options;
	int ret = QLA_SUCCESS;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer.\n",
				  __func__));
		ret = QLA_ERROR;
		return ret;
	}

	if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
				   fw_ddb_entry_dma, ddb_index)) {
6074 6075
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
				  "index [%d]\n", __func__, ddb_index));
6076 6077 6078 6079 6080 6081 6082 6083 6084 6085 6086 6087 6088 6089 6090 6091 6092 6093 6094 6095 6096 6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112 6113 6114 6115 6116 6117 6118 6119 6120 6121
		ret = QLA_ERROR;
		goto exit_boot_target;
	}

	/* Update target name and IP from DDB */
	memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
	       min(sizeof(boot_sess->target_name),
		   sizeof(fw_ddb_entry->iscsi_name)));

	options = le16_to_cpu(fw_ddb_entry->options);
	if (options & DDB_OPT_IPV6_DEVICE) {
		memcpy(&boot_conn->dest_ipaddr.ip_address,
		       &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
	} else {
		boot_conn->dest_ipaddr.ip_type = 0x1;
		memcpy(&boot_conn->dest_ipaddr.ip_address,
		       &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
	}

	boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);

	/* update chap information */
	idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);

	if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))	{

		DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));

		ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
				       target_chap_name,
				       (char *)&boot_conn->chap.target_secret,
				       idx);
		if (ret) {
			ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
			ret = QLA_ERROR;
			goto exit_boot_target;
		}

		boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
		boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
	}

	if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {

		DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));

6122 6123 6124 6125
		ret = qla4xxx_get_bidi_chap(ha,
				    (char *)&boot_conn->chap.intr_chap_name,
				    (char *)&boot_conn->chap.intr_secret);

6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 6136 6137 6138 6139 6140 6141 6142 6143 6144
		if (ret) {
			ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
			ret = QLA_ERROR;
			goto exit_boot_target;
		}

		boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
		boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
	}

exit_boot_target:
	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
			  fw_ddb_entry, fw_ddb_entry_dma);
	return ret;
}

static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
{
	uint16_t ddb_index[2];
6145 6146
	int ret = QLA_ERROR;
	int rval;
6147 6148

	memset(ddb_index, 0, sizeof(ddb_index));
6149 6150
	ddb_index[0] = 0xffff;
	ddb_index[1] = 0xffff;
6151 6152
	ret = get_fw_boot_info(ha, ddb_index);
	if (ret != QLA_SUCCESS) {
6153 6154
		DEBUG2(ql4_printk(KERN_INFO, ha,
				"%s: No boot target configured.\n", __func__));
6155 6156 6157
		return ret;
	}

6158 6159 6160
	if (ql4xdisablesysfsboot)
		return QLA_SUCCESS;

6161 6162 6163 6164
	if (ddb_index[0] == 0xffff)
		goto sec_target;

	rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
6165
				      ddb_index[0]);
6166
	if (rval != QLA_SUCCESS) {
6167 6168
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
				  "configured\n", __func__));
6169 6170
	} else
		ret = QLA_SUCCESS;
6171

6172 6173 6174 6175 6176
sec_target:
	if (ddb_index[1] == 0xffff)
		goto exit_get_boot_info;

	rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
6177
				      ddb_index[1]);
6178
	if (rval != QLA_SUCCESS) {
6179 6180
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
				  " configured\n", __func__));
6181 6182 6183 6184
	} else
		ret = QLA_SUCCESS;

exit_get_boot_info:
6185 6186 6187 6188 6189 6190 6191 6192
	return ret;
}

static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
{
	struct iscsi_boot_kobj *boot_kobj;

	if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
6193 6194 6195 6196
		return QLA_ERROR;

	if (ql4xdisablesysfsboot) {
		ql4_printk(KERN_INFO, ha,
6197
			   "%s: syfsboot disabled - driver will trigger login "
6198 6199 6200 6201
			   "and publish session for discovery .\n", __func__);
		return QLA_SUCCESS;
	}

6202 6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 6221 6222 6223 6224 6225 6226 6227 6228 6229 6230 6231 6232 6233 6234 6235 6236 6237 6238 6239 6240 6241 6242

	ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
	if (!ha->boot_kset)
		goto kset_free;

	if (!scsi_host_get(ha->host))
		goto kset_free;
	boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
					     qla4xxx_show_boot_tgt_pri_info,
					     qla4xxx_tgt_get_attr_visibility,
					     qla4xxx_boot_release);
	if (!boot_kobj)
		goto put_host;

	if (!scsi_host_get(ha->host))
		goto kset_free;
	boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
					     qla4xxx_show_boot_tgt_sec_info,
					     qla4xxx_tgt_get_attr_visibility,
					     qla4xxx_boot_release);
	if (!boot_kobj)
		goto put_host;

	if (!scsi_host_get(ha->host))
		goto kset_free;
	boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
					       qla4xxx_show_boot_ini_info,
					       qla4xxx_ini_get_attr_visibility,
					       qla4xxx_boot_release);
	if (!boot_kobj)
		goto put_host;

	if (!scsi_host_get(ha->host))
		goto kset_free;
	boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
					       qla4xxx_show_boot_eth_info,
					       qla4xxx_eth_get_attr_visibility,
					       qla4xxx_boot_release);
	if (!boot_kobj)
		goto put_host;

6243
	return QLA_SUCCESS;
6244 6245 6246 6247 6248 6249 6250 6251

put_host:
	scsi_host_put(ha->host);
kset_free:
	iscsi_boot_destroy_kset(ha->boot_kset);
	return -ENOMEM;
}

6252

6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270
static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
				  struct ql4_tuple_ddb *tddb)
{
	struct scsi_qla_host *ha;
	struct iscsi_cls_session *cls_sess;
	struct iscsi_cls_conn *cls_conn;
	struct iscsi_session *sess;
	struct iscsi_conn *conn;

	DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
	ha = ddb_entry->ha;
	cls_sess = ddb_entry->sess;
	sess = cls_sess->dd_data;
	cls_conn = ddb_entry->conn;
	conn = cls_conn->dd_data;

	tddb->tpgt = sess->tpgt;
	tddb->port = conn->persistent_port;
6271 6272
	strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
	strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
6273 6274 6275
}

static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
6276 6277
				      struct ql4_tuple_ddb *tddb,
				      uint8_t *flash_isid)
6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291
{
	uint16_t options = 0;

	tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
	memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
	       min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));

	options = le16_to_cpu(fw_ddb_entry->options);
	if (options & DDB_OPT_IPV6_DEVICE)
		sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
	else
		sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);

	tddb->port = le16_to_cpu(fw_ddb_entry->port);
6292 6293 6294 6295 6296 6297

	if (flash_isid == NULL)
		memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
		       sizeof(tddb->isid));
	else
		memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
6298 6299 6300 6301
}

static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
				     struct ql4_tuple_ddb *old_tddb,
6302 6303
				     struct ql4_tuple_ddb *new_tddb,
				     uint8_t is_isid_compare)
6304 6305 6306 6307 6308 6309 6310 6311 6312 6313
{
	if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
		return QLA_ERROR;

	if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
		return QLA_ERROR;

	if (old_tddb->port != new_tddb->port)
		return QLA_ERROR;

6314
	/* For multi sessions, driver generates the ISID, so do not compare
6315
	 * ISID in reset path since it would be a comparison between the
6316 6317 6318 6319 6320
	 * driver generated ISID and firmware generated ISID. This could
	 * lead to adding duplicated DDBs in the list as driver generated
	 * ISID would not match firmware generated ISID.
	 */
	if (is_isid_compare) {
6321 6322 6323
		DEBUG2(ql4_printk(KERN_INFO, ha,
			"%s: old ISID [%pmR] New ISID [%pmR]\n",
			__func__, old_tddb->isid, new_tddb->isid));
6324 6325 6326 6327 6328 6329

		if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
			   sizeof(old_tddb->isid)))
			return QLA_ERROR;
	}

6330 6331 6332 6333 6334 6335 6336 6337 6338 6339
	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
			  old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
			  old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
			  new_tddb->ip_addr, new_tddb->iscsi_name));

	return QLA_SUCCESS;
}

static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
6340 6341
				     struct dev_db_entry *fw_ddb_entry,
				     uint32_t *index)
6342 6343 6344 6345 6346 6347 6348 6349 6350 6351 6352 6353 6354 6355 6356 6357 6358 6359 6360 6361 6362 6363 6364
{
	struct ddb_entry *ddb_entry;
	struct ql4_tuple_ddb *fw_tddb = NULL;
	struct ql4_tuple_ddb *tmp_tddb = NULL;
	int idx;
	int ret = QLA_ERROR;

	fw_tddb = vzalloc(sizeof(*fw_tddb));
	if (!fw_tddb) {
		DEBUG2(ql4_printk(KERN_WARNING, ha,
				  "Memory Allocation failed.\n"));
		ret = QLA_SUCCESS;
		goto exit_check;
	}

	tmp_tddb = vzalloc(sizeof(*tmp_tddb));
	if (!tmp_tddb) {
		DEBUG2(ql4_printk(KERN_WARNING, ha,
				  "Memory Allocation failed.\n"));
		ret = QLA_SUCCESS;
		goto exit_check;
	}

6365
	qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6366 6367 6368 6369 6370 6371 6372

	for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
		if (ddb_entry == NULL)
			continue;

		qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
6373
		if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
6374
			ret = QLA_SUCCESS; /* found */
6375 6376
			if (index != NULL)
				*index = idx;
6377 6378 6379 6380 6381 6382 6383 6384 6385 6386 6387 6388
			goto exit_check;
		}
	}

exit_check:
	if (fw_tddb)
		vfree(fw_tddb);
	if (tmp_tddb)
		vfree(tmp_tddb);
	return ret;
}

6389 6390 6391 6392 6393 6394 6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409 6410 6411 6412 6413 6414 6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450 6451 6452 6453 6454 6455 6456 6457 6458 6459 6460 6461 6462 6463 6464 6465 6466 6467 6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484
/**
 * qla4xxx_check_existing_isid - check if target with same isid exist
 *				 in target list
 * @list_nt: list of target
 * @isid: isid to check
 *
 * This routine return QLA_SUCCESS if target with same isid exist
 **/
static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
{
	struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
	struct dev_db_entry *fw_ddb_entry;

	list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
		fw_ddb_entry = &nt_ddb_idx->fw_ddb;

		if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
			   sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
			return QLA_SUCCESS;
		}
	}
	return QLA_ERROR;
}

/**
 * qla4xxx_update_isid - compare ddbs and updated isid
 * @ha: Pointer to host adapter structure.
 * @list_nt: list of nt target
 * @fw_ddb_entry: firmware ddb entry
 *
 * This routine update isid if ddbs have same iqn, same isid and
 * different IP addr.
 * Return QLA_SUCCESS if isid is updated.
 **/
static int qla4xxx_update_isid(struct scsi_qla_host *ha,
			       struct list_head *list_nt,
			       struct dev_db_entry *fw_ddb_entry)
{
	uint8_t base_value, i;

	base_value = fw_ddb_entry->isid[1] & 0x1f;
	for (i = 0; i < 8; i++) {
		fw_ddb_entry->isid[1] = (base_value | (i << 5));
		if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
			break;
	}

	if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
		return QLA_ERROR;

	return QLA_SUCCESS;
}

/**
 * qla4xxx_should_update_isid - check if isid need to update
 * @ha: Pointer to host adapter structure.
 * @old_tddb: ddb tuple
 * @new_tddb: ddb tuple
 *
 * Return QLA_SUCCESS if different IP, different PORT, same iqn,
 * same isid
 **/
static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
				      struct ql4_tuple_ddb *old_tddb,
				      struct ql4_tuple_ddb *new_tddb)
{
	if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
		/* Same ip */
		if (old_tddb->port == new_tddb->port)
			return QLA_ERROR;
	}

	if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
		/* different iqn */
		return QLA_ERROR;

	if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
		   sizeof(old_tddb->isid)))
		/* different isid */
		return QLA_ERROR;

	return QLA_SUCCESS;
}

/**
 * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
 * @ha: Pointer to host adapter structure.
 * @list_nt: list of nt target.
 * @fw_ddb_entry: firmware ddb entry.
 *
 * This routine check if fw_ddb_entry already exists in list_nt to avoid
 * duplicate ddb in list_nt.
 * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
 * Note: This function also update isid of DDB if required.
 **/

6485 6486 6487 6488 6489 6490 6491
static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
				       struct list_head *list_nt,
				       struct dev_db_entry *fw_ddb_entry)
{
	struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
	struct ql4_tuple_ddb *fw_tddb = NULL;
	struct ql4_tuple_ddb *tmp_tddb = NULL;
6492
	int rval, ret = QLA_ERROR;
6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509

	fw_tddb = vzalloc(sizeof(*fw_tddb));
	if (!fw_tddb) {
		DEBUG2(ql4_printk(KERN_WARNING, ha,
				  "Memory Allocation failed.\n"));
		ret = QLA_SUCCESS;
		goto exit_check;
	}

	tmp_tddb = vzalloc(sizeof(*tmp_tddb));
	if (!tmp_tddb) {
		DEBUG2(ql4_printk(KERN_WARNING, ha,
				  "Memory Allocation failed.\n"));
		ret = QLA_SUCCESS;
		goto exit_check;
	}

6510
	qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6511 6512

	list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6513 6514 6515 6516 6517 6518 6519 6520 6521 6522 6523 6524 6525 6526 6527 6528 6529 6530 6531
		qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
					  nt_ddb_idx->flash_isid);
		ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
		/* found duplicate ddb */
		if (ret == QLA_SUCCESS)
			goto exit_check;
	}

	list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
		qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);

		ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
		if (ret == QLA_SUCCESS) {
			rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
			if (rval == QLA_SUCCESS)
				ret = QLA_ERROR;
			else
				ret = QLA_SUCCESS;

6532 6533 6534 6535 6536 6537 6538 6539 6540 6541 6542 6543
			goto exit_check;
		}
	}

exit_check:
	if (fw_tddb)
		vfree(fw_tddb);
	if (tmp_tddb)
		vfree(tmp_tddb);
	return ret;
}

6544
static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
6545
{
6546
	struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6547

6548 6549 6550
	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
		list_del_init(&ddb_idx->list);
		vfree(ddb_idx);
6551 6552 6553 6554 6555 6556 6557 6558 6559
	}
}

static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
					struct dev_db_entry *fw_ddb_entry)
{
	struct iscsi_endpoint *ep;
	struct sockaddr_in *addr;
	struct sockaddr_in6 *addr6;
6560 6561
	struct sockaddr *t_addr;
	struct sockaddr_storage *dst_addr;
6562 6563 6564 6565 6566 6567 6568 6569
	char *ip;

	/* TODO: need to destroy on unload iscsi_endpoint*/
	dst_addr = vmalloc(sizeof(*dst_addr));
	if (!dst_addr)
		return NULL;

	if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
6570 6571
		t_addr = (struct sockaddr *)dst_addr;
		t_addr->sa_family = AF_INET6;
6572 6573 6574 6575 6576 6577
		addr6 = (struct sockaddr_in6 *)dst_addr;
		ip = (char *)&addr6->sin6_addr;
		memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
		addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));

	} else {
6578 6579
		t_addr = (struct sockaddr *)dst_addr;
		t_addr->sa_family = AF_INET;
6580 6581 6582 6583 6584 6585
		addr = (struct sockaddr_in *)dst_addr;
		ip = (char *)&addr->sin_addr;
		memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
		addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
	}

6586
	ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
6587 6588 6589 6590 6591 6592 6593 6594 6595 6596 6597 6598 6599 6600
	vfree(dst_addr);
	return ep;
}

static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
{
	if (ql4xdisablesysfsboot)
		return QLA_SUCCESS;
	if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
		return QLA_ERROR;
	return QLA_SUCCESS;
}

static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
6601 6602
					  struct ddb_entry *ddb_entry,
					  uint16_t idx)
6603
{
6604 6605
	uint16_t def_timeout;

6606 6607 6608 6609 6610 6611
	ddb_entry->ddb_type = FLASH_DDB;
	ddb_entry->fw_ddb_index = INVALID_ENTRY;
	ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
	ddb_entry->ha = ha;
	ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
	ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
6612
	ddb_entry->chap_tbl_idx = INVALID_ENTRY;
6613 6614 6615 6616

	atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
	atomic_set(&ddb_entry->relogin_timer, 0);
	atomic_set(&ddb_entry->relogin_retry_count, 0);
6617
	def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
6618
	ddb_entry->default_relogin_timeout =
6619 6620
		(def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
		def_timeout : LOGIN_TOV;
6621 6622
	ddb_entry->default_time2wait =
		le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
6623 6624 6625 6626

	if (ql4xdisablesysfsboot &&
	    (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
		set_bit(DF_BOOT_TGT, &ddb_entry->flags);
6627 6628 6629 6630 6631 6632 6633 6634 6635 6636 6637 6638 6639 6640 6641 6642 6643 6644 6645 6646 6647 6648 6649 6650 6651 6652 6653 6654 6655 6656 6657 6658 6659 6660 6661 6662 6663 6664 6665 6666 6667 6668 6669 6670 6671 6672 6673
}

static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
{
	uint32_t idx = 0;
	uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
	uint32_t sts[MBOX_REG_COUNT];
	uint32_t ip_state;
	unsigned long wtime;
	int ret;

	wtime = jiffies + (HZ * IP_CONFIG_TOV);
	do {
		for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
			if (ip_idx[idx] == -1)
				continue;

			ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);

			if (ret == QLA_ERROR) {
				ip_idx[idx] = -1;
				continue;
			}

			ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;

			DEBUG2(ql4_printk(KERN_INFO, ha,
					  "Waiting for IP state for idx = %d, state = 0x%x\n",
					  ip_idx[idx], ip_state));
			if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
			    ip_state == IP_ADDRSTATE_INVALID ||
			    ip_state == IP_ADDRSTATE_PREFERRED ||
			    ip_state == IP_ADDRSTATE_DEPRICATED ||
			    ip_state == IP_ADDRSTATE_DISABLING)
				ip_idx[idx] = -1;
		}

		/* Break if all IP states checked */
		if ((ip_idx[0] == -1) &&
		    (ip_idx[1] == -1) &&
		    (ip_idx[2] == -1) &&
		    (ip_idx[3] == -1))
			break;
		schedule_timeout_uninterruptible(HZ);
	} while (time_after(wtime, jiffies));
}

6674 6675 6676 6677 6678 6679 6680 6681 6682 6683 6684 6685 6686 6687 6688 6689 6690 6691 6692 6693 6694 6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708 6709 6710 6711 6712 6713 6714 6715 6716 6717 6718 6719 6720 6721 6722 6723 6724 6725 6726 6727 6728 6729 6730 6731 6732 6733 6734 6735 6736 6737 6738 6739 6740 6741 6742 6743 6744 6745 6746 6747 6748 6749 6750 6751 6752 6753 6754
static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
				  struct dev_db_entry *flash_ddb_entry)
{
	uint16_t options = 0;
	size_t ip_len = IP_ADDR_LEN;

	options = le16_to_cpu(fw_ddb_entry->options);
	if (options & DDB_OPT_IPV6_DEVICE)
		ip_len = IPv6_ADDR_LEN;

	if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
		return QLA_ERROR;

	if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
		   sizeof(fw_ddb_entry->isid)))
		return QLA_ERROR;

	if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
		   sizeof(fw_ddb_entry->port)))
		return QLA_ERROR;

	return QLA_SUCCESS;
}

static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
				     struct dev_db_entry *fw_ddb_entry,
				     uint32_t fw_idx, uint32_t *flash_index)
{
	struct dev_db_entry *flash_ddb_entry;
	dma_addr_t flash_ddb_entry_dma;
	uint32_t idx = 0;
	int max_ddbs;
	int ret = QLA_ERROR, status;

	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;

	flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
					 &flash_ddb_entry_dma);
	if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
		ql4_printk(KERN_ERR, ha, "Out of memory\n");
		goto exit_find_st_idx;
	}

	status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
					  flash_ddb_entry_dma, fw_idx);
	if (status == QLA_SUCCESS) {
		status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
		if (status == QLA_SUCCESS) {
			*flash_index = fw_idx;
			ret = QLA_SUCCESS;
			goto exit_find_st_idx;
		}
	}

	for (idx = 0; idx < max_ddbs; idx++) {
		status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
						  flash_ddb_entry_dma, idx);
		if (status == QLA_ERROR)
			continue;

		status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
		if (status == QLA_SUCCESS) {
			*flash_index = idx;
			ret = QLA_SUCCESS;
			goto exit_find_st_idx;
		}
	}

	if (idx == max_ddbs)
		ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
			   fw_idx);

exit_find_st_idx:
	if (flash_ddb_entry)
		dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
			      flash_ddb_entry_dma);

	return ret;
}

6755 6756
static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
				  struct list_head *list_st)
6757
{
6758
	struct qla_ddb_index  *st_ddb_idx;
6759
	int max_ddbs;
6760 6761 6762
	int fw_idx_size;
	struct dev_db_entry *fw_ddb_entry;
	dma_addr_t fw_ddb_dma;
6763 6764 6765
	int ret;
	uint32_t idx = 0, next_idx = 0;
	uint32_t state = 0, conn_err = 0;
6766
	uint32_t flash_index = -1;
6767
	uint16_t conn_id = 0;
6768 6769 6770 6771 6772

	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
				      &fw_ddb_dma);
	if (fw_ddb_entry == NULL) {
		DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6773
		goto exit_st_list;
6774 6775
	}

6776 6777
	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;
6778 6779 6780
	fw_idx_size = sizeof(struct qla_ddb_index);

	for (idx = 0; idx < max_ddbs; idx = next_idx) {
6781 6782 6783
		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
					      NULL, &next_idx, &state,
					      &conn_err, NULL, &conn_id);
6784 6785 6786
		if (ret == QLA_ERROR)
			break;

6787 6788 6789 6790
		/* Ignore DDB if invalid state (unassigned) */
		if (state == DDB_DS_UNASSIGNED)
			goto continue_next_st;

6791 6792 6793 6794 6795 6796 6797 6798
		/* Check if ST, add to the list_st */
		if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
			goto continue_next_st;

		st_ddb_idx = vzalloc(fw_idx_size);
		if (!st_ddb_idx)
			break;

6799 6800 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810 6811
		ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
						&flash_index);
		if (ret == QLA_ERROR) {
			ql4_printk(KERN_ERR, ha,
				   "No flash entry for ST at idx [%d]\n", idx);
			st_ddb_idx->flash_ddb_idx = idx;
		} else {
			ql4_printk(KERN_INFO, ha,
				   "ST at idx [%d] is stored at flash [%d]\n",
				   idx, flash_index);
			st_ddb_idx->flash_ddb_idx = flash_index;
		}

6812 6813
		st_ddb_idx->fw_ddb_idx = idx;

6814
		list_add_tail(&st_ddb_idx->list, list_st);
6815 6816 6817 6818 6819
continue_next_st:
		if (next_idx == 0)
			break;
	}

6820 6821 6822 6823 6824 6825 6826 6827 6828 6829 6830 6831 6832 6833 6834 6835 6836 6837 6838 6839 6840 6841 6842 6843 6844 6845 6846 6847 6848 6849 6850 6851 6852 6853 6854 6855
exit_st_list:
	if (fw_ddb_entry)
		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
}

/**
 * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
 * @ha: pointer to adapter structure
 * @list_ddb: List from which failed ddb to be removed
 *
 * Iterate over the list of DDBs and find and remove DDBs that are either in
 * no connection active state or failed state
 **/
static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
				      struct list_head *list_ddb)
{
	struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
	uint32_t next_idx = 0;
	uint32_t state = 0, conn_err = 0;
	int ret;

	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
		ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
					      NULL, 0, NULL, &next_idx, &state,
					      &conn_err, NULL, NULL);
		if (ret == QLA_ERROR)
			continue;

		if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
		    state == DDB_DS_SESSION_FAILED) {
			list_del_init(&ddb_idx->list);
			vfree(ddb_idx);
		}
	}
}

6856 6857 6858 6859 6860 6861 6862 6863 6864 6865 6866 6867 6868 6869 6870 6871 6872 6873 6874 6875 6876 6877
static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
					 struct ddb_entry *ddb_entry,
					 struct dev_db_entry *fw_ddb_entry)
{
	struct iscsi_cls_session *cls_sess;
	struct iscsi_session *sess;
	uint32_t max_ddbs = 0;
	uint16_t ddb_link = -1;

	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;

	cls_sess = ddb_entry->sess;
	sess = cls_sess->dd_data;

	ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
	if (ddb_link < max_ddbs)
		sess->discovery_parent_idx = ddb_link;
	else
		sess->discovery_parent_idx = DDB_NO_LINK;
}

6878 6879
static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
				   struct dev_db_entry *fw_ddb_entry,
6880
				   int is_reset, uint16_t idx)
6881 6882 6883 6884 6885 6886 6887 6888 6889 6890 6891 6892 6893 6894
{
	struct iscsi_cls_session *cls_sess;
	struct iscsi_session *sess;
	struct iscsi_cls_conn *cls_conn;
	struct iscsi_endpoint *ep;
	uint16_t cmds_max = 32;
	uint16_t conn_id = 0;
	uint32_t initial_cmdsn = 0;
	int ret = QLA_SUCCESS;

	struct ddb_entry *ddb_entry = NULL;

	/* Create session object, with INVALID_ENTRY,
	 * the targer_id would get set when we issue the login
6895
	 */
6896 6897 6898 6899 6900 6901 6902 6903
	cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
				       cmds_max, sizeof(struct ddb_entry),
				       sizeof(struct ql4_task_data),
				       initial_cmdsn, INVALID_ENTRY);
	if (!cls_sess) {
		ret = QLA_ERROR;
		goto exit_setup;
	}
6904

6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915 6916 6917
	/*
	 * so calling module_put function to decrement the
	 * reference count.
	 **/
	module_put(qla4xxx_iscsi_transport.owner);
	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ddb_entry->sess = cls_sess;

	cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
	memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
	       sizeof(struct dev_db_entry));

6918
	qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
6919 6920 6921 6922 6923 6924

	cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);

	if (!cls_conn) {
		ret = QLA_ERROR;
		goto exit_setup;
6925 6926
	}

6927
	ddb_entry->conn = cls_conn;
6928

6929 6930 6931 6932 6933 6934 6935 6936 6937 6938
	/* Setup ep, for displaying attributes in sysfs */
	ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
	if (ep) {
		ep->conn = cls_conn;
		cls_conn->ep = ep;
	} else {
		DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
		ret = QLA_ERROR;
		goto exit_setup;
	}
6939

6940 6941
	/* Update sess/conn params */
	qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
6942
	qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
6943

6944 6945 6946 6947 6948 6949 6950 6951 6952 6953 6954 6955 6956 6957 6958
	if (is_reset == RESET_ADAPTER) {
		iscsi_block_session(cls_sess);
		/* Use the relogin path to discover new devices
		 *  by short-circuting the logic of setting
		 *  timer to relogin - instead set the flags
		 *  to initiate login right away.
		 */
		set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
		set_bit(DF_RELOGIN, &ddb_entry->flags);
	}

exit_setup:
	return ret;
}

6959 6960 6961 6962 6963 6964 6965 6966 6967 6968 6969 6970 6971 6972 6973 6974 6975 6976 6977 6978 6979
static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
				       struct list_head *list_ddb,
				       struct dev_db_entry *fw_ddb_entry)
{
	struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
	uint16_t ddb_link;

	ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);

	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
		if (ddb_idx->fw_ddb_idx == ddb_link) {
			DEBUG2(ql4_printk(KERN_INFO, ha,
					  "Updating NT parent idx from [%d] to [%d]\n",
					  ddb_link, ddb_idx->flash_ddb_idx));
			fw_ddb_entry->ddb_link =
					    cpu_to_le16(ddb_idx->flash_ddb_idx);
			return;
		}
	}
}

6980
static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
6981 6982 6983
				  struct list_head *list_nt,
				  struct list_head *list_st,
				  int is_reset)
6984 6985
{
	struct dev_db_entry *fw_ddb_entry;
6986
	struct ddb_entry *ddb_entry = NULL;
6987 6988 6989 6990 6991 6992
	dma_addr_t fw_ddb_dma;
	int max_ddbs;
	int fw_idx_size;
	int ret;
	uint32_t idx = 0, next_idx = 0;
	uint32_t state = 0, conn_err = 0;
6993
	uint32_t ddb_idx = -1;
6994
	uint16_t conn_id = 0;
6995
	uint16_t ddb_link = -1;
6996 6997 6998 6999 7000 7001 7002
	struct qla_ddb_index  *nt_ddb_idx;

	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
				      &fw_ddb_dma);
	if (fw_ddb_entry == NULL) {
		DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
		goto exit_nt_list;
7003
	}
7004 7005 7006
	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;
	fw_idx_size = sizeof(struct qla_ddb_index);
7007 7008

	for (idx = 0; idx < max_ddbs; idx = next_idx) {
7009 7010 7011
		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
					      NULL, &next_idx, &state,
					      &conn_err, NULL, &conn_id);
7012 7013 7014 7015 7016 7017 7018 7019 7020 7021
		if (ret == QLA_ERROR)
			break;

		if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
			goto continue_next_nt;

		/* Check if NT, then add to list it */
		if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
			goto continue_next_nt;

7022 7023 7024 7025
		ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
		if (ddb_link < max_ddbs)
			qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);

7026
		if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
7027 7028
		    state == DDB_DS_SESSION_FAILED) &&
		    (is_reset == INIT_ADAPTER))
7029
			goto continue_next_nt;
7030

7031 7032
		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "Adding  DDB to session = 0x%x\n", idx));
7033

7034 7035 7036 7037
		if (is_reset == INIT_ADAPTER) {
			nt_ddb_idx = vmalloc(fw_idx_size);
			if (!nt_ddb_idx)
				break;
7038

7039
			nt_ddb_idx->fw_ddb_idx = idx;
7040

7041 7042 7043 7044 7045 7046 7047 7048 7049 7050 7051 7052
			/* Copy original isid as it may get updated in function
			 * qla4xxx_update_isid(). We need original isid in
			 * function qla4xxx_compare_tuple_ddb to find duplicate
			 * target */
			memcpy(&nt_ddb_idx->flash_isid[0],
			       &fw_ddb_entry->isid[0],
			       sizeof(nt_ddb_idx->flash_isid));

			ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
							  fw_ddb_entry);
			if (ret == QLA_SUCCESS) {
				/* free nt_ddb_idx and do not add to list_nt */
7053 7054
				vfree(nt_ddb_idx);
				goto continue_next_nt;
7055
			}
7056 7057 7058 7059 7060

			/* Copy updated isid */
			memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
			       sizeof(struct dev_db_entry));

7061 7062
			list_add_tail(&nt_ddb_idx->list, list_nt);
		} else if (is_reset == RESET_ADAPTER) {
7063 7064 7065 7066 7067 7068 7069 7070 7071
			ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
							&ddb_idx);
			if (ret == QLA_SUCCESS) {
				ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
								       ddb_idx);
				if (ddb_entry != NULL)
					qla4xxx_update_sess_disc_idx(ha,
								     ddb_entry,
								  fw_ddb_entry);
7072
				goto continue_next_nt;
7073
			}
7074
		}
7075

7076
		ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
7077 7078 7079
		if (ret == QLA_ERROR)
			goto exit_nt_list;

7080 7081 7082 7083
continue_next_nt:
		if (next_idx == 0)
			break;
	}
7084 7085

exit_nt_list:
7086 7087
	if (fw_ddb_entry)
		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7088 7089
}

7090
static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
7091 7092
				      struct list_head *list_nt,
				      uint16_t target_id)
7093 7094 7095 7096 7097 7098 7099 7100 7101 7102 7103 7104 7105 7106 7107 7108 7109 7110 7111 7112 7113 7114 7115 7116 7117 7118 7119 7120 7121 7122 7123 7124 7125 7126 7127 7128 7129 7130 7131 7132 7133 7134 7135 7136
{
	struct dev_db_entry *fw_ddb_entry;
	dma_addr_t fw_ddb_dma;
	int max_ddbs;
	int fw_idx_size;
	int ret;
	uint32_t idx = 0, next_idx = 0;
	uint32_t state = 0, conn_err = 0;
	uint16_t conn_id = 0;
	struct qla_ddb_index  *nt_ddb_idx;

	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
				      &fw_ddb_dma);
	if (fw_ddb_entry == NULL) {
		DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
		goto exit_new_nt_list;
	}
	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;
	fw_idx_size = sizeof(struct qla_ddb_index);

	for (idx = 0; idx < max_ddbs; idx = next_idx) {
		ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
					      NULL, &next_idx, &state,
					      &conn_err, NULL, &conn_id);
		if (ret == QLA_ERROR)
			break;

		/* Check if NT, then add it to list */
		if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
			goto continue_next_new_nt;

		if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
			goto continue_next_new_nt;

		DEBUG2(ql4_printk(KERN_INFO, ha,
				  "Adding  DDB to session = 0x%x\n", idx));

		nt_ddb_idx = vmalloc(fw_idx_size);
		if (!nt_ddb_idx)
			break;

		nt_ddb_idx->fw_ddb_idx = idx;

7137
		ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7138 7139 7140 7141 7142 7143
		if (ret == QLA_SUCCESS) {
			/* free nt_ddb_idx and do not add to list_nt */
			vfree(nt_ddb_idx);
			goto continue_next_new_nt;
		}

7144 7145 7146
		if (target_id < max_ddbs)
			fw_ddb_entry->ddb_link = cpu_to_le16(target_id);

7147 7148 7149 7150 7151 7152 7153 7154 7155 7156 7157 7158 7159 7160 7161 7162 7163
		list_add_tail(&nt_ddb_idx->list, list_nt);

		ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
					      idx);
		if (ret == QLA_ERROR)
			goto exit_new_nt_list;

continue_next_new_nt:
		if (next_idx == 0)
			break;
	}

exit_new_nt_list:
	if (fw_ddb_entry)
		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
}

7164
/**
7165 7166 7167
 * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
 * @dev: dev associated with the sysfs entry
 * @data: pointer to flashnode session object
7168
 *
7169 7170 7171
 * Returns:
 *	1: if flashnode entry is non-persistent
 *	0: if flashnode entry is persistent
7172
 **/
7173
static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
7174
{
7175
	struct iscsi_bus_flash_session *fnode_sess;
7176

7177 7178
	if (!iscsi_flashnode_bus_match(dev, NULL))
		return 0;
7179

7180
	fnode_sess = iscsi_dev_to_flash_session(dev);
7181

7182 7183
	return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
}
7184

7185 7186 7187 7188 7189 7190 7191 7192 7193 7194 7195 7196 7197 7198 7199 7200
/**
 * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
 * @ha: pointer to host
 * @fw_ddb_entry: flash ddb data
 * @idx: target index
 * @user: if set then this call is made from userland else from kernel
 *
 * Returns:
 * On sucess: QLA_SUCCESS
 * On failure: QLA_ERROR
 *
 * This create separate sysfs entries for session and connection attributes of
 * the given fw ddb entry.
 * If this is invoked as a result of a userspace call then the entry is marked
 * as nonpersistent using flash_state field.
 **/
7201 7202 7203
static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
					struct dev_db_entry *fw_ddb_entry,
					uint16_t *idx, int user)
7204 7205 7206 7207
{
	struct iscsi_bus_flash_session *fnode_sess = NULL;
	struct iscsi_bus_flash_conn *fnode_conn = NULL;
	int rc = QLA_ERROR;
7208

7209 7210 7211 7212 7213 7214 7215
	fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
						 &qla4xxx_iscsi_transport, 0);
	if (!fnode_sess) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
			   __func__, *idx, ha->host_no);
		goto exit_tgt_create;
7216 7217
	}

7218 7219 7220 7221 7222 7223 7224 7225
	fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
						 &qla4xxx_iscsi_transport, 0);
	if (!fnode_conn) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
			   __func__, *idx, ha->host_no);
		goto free_sess;
	}
7226

7227 7228 7229 7230
	if (user) {
		fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
	} else {
		fnode_sess->flash_state = DEV_DB_PERSISTENT;
7231

7232 7233 7234 7235 7236
		if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
			fnode_sess->is_boot_target = 1;
		else
			fnode_sess->is_boot_target = 0;
	}
7237

7238 7239
	rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
					   fw_ddb_entry);
7240

7241 7242
	ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
		   __func__, fnode_sess->dev.kobj.name);
7243

7244 7245
	ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
		   __func__, fnode_conn->dev.kobj.name);
7246

7247
	return QLA_SUCCESS;
7248

7249 7250 7251 7252 7253
free_sess:
	iscsi_destroy_flashnode_sess(fnode_sess);

exit_tgt_create:
	return QLA_ERROR;
7254 7255
}

7256
/**
7257 7258 7259 7260
 * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
 * @shost: pointer to host
 * @buf: type of ddb entry (ipv4/ipv6)
 * @len: length of buf
7261
 *
7262 7263
 * This creates new ddb entry in the flash by finding first free index and
 * storing default ddb there. And then create sysfs entry for the new ddb entry.
7264
 **/
7265 7266
static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
				 int len)
7267
{
7268
	struct scsi_qla_host *ha = to_qla_host(shost);
7269 7270
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
7271 7272 7273 7274 7275 7276
	struct device *dev;
	uint16_t idx = 0;
	uint16_t max_ddbs = 0;
	uint32_t options = 0;
	uint32_t rval = QLA_ERROR;

7277 7278
	if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
	    strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
7279 7280 7281 7282
		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
				  __func__));
		goto exit_ddb_add;
	}
7283

7284
	max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
7285 7286 7287 7288 7289
				     MAX_DEV_DB_ENTRIES;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
7290 7291 7292 7293
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		goto exit_ddb_add;
7294 7295
	}

7296 7297 7298 7299 7300 7301
	dev = iscsi_find_flashnode_sess(ha->host, NULL,
					qla4xxx_sysfs_ddb_is_non_persistent);
	if (dev) {
		ql4_printk(KERN_ERR, ha,
			   "%s: A non-persistent entry %s found\n",
			   __func__, dev->kobj.name);
7302
		put_device(dev);
7303 7304
		goto exit_ddb_add;
	}
7305

7306 7307
	/* Index 0 and 1 are reserved for boot target entries */
	for (idx = 2; idx < max_ddbs; idx++) {
7308 7309 7310 7311
		if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
					     fw_ddb_entry_dma, idx))
			break;
	}
7312

7313 7314
	if (idx == max_ddbs)
		goto exit_ddb_add;
7315

7316 7317
	if (!strncasecmp("ipv6", buf, 4))
		options |= IPV6_DEFAULT_DDB_ENTRY;
7318

7319 7320 7321
	rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
	if (rval == QLA_ERROR)
		goto exit_ddb_add;
7322

7323
	rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
7324

7325
exit_ddb_add:
7326 7327 7328
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
7329 7330 7331 7332
	if (rval == QLA_SUCCESS)
		return idx;
	else
		return -EIO;
7333 7334
}

7335
/**
7336 7337 7338
 * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
 * @fnode_sess: pointer to session attrs of flash ddb entry
 * @fnode_conn: pointer to connection attrs of flash ddb entry
7339
 *
7340 7341
 * This writes the contents of target ddb buffer to Flash with a valid cookie
 * value in order to make the ddb entry persistent.
7342
 **/
7343 7344
static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
				    struct iscsi_bus_flash_conn *fnode_conn)
7345
{
7346 7347 7348 7349 7350 7351 7352
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	uint32_t options = 0;
	int rval = 0;
7353

7354 7355 7356 7357 7358 7359 7360 7361 7362
	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		rval = -ENOMEM;
		goto exit_ddb_apply;
	}
7363

7364
	if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7365 7366 7367 7368 7369 7370 7371 7372 7373 7374 7375 7376 7377 7378 7379 7380 7381 7382 7383 7384 7385 7386 7387 7388 7389 7390 7391 7392 7393 7394 7395 7396 7397 7398 7399 7400 7401 7402 7403 7404 7405 7406 7407 7408 7409 7410 7411 7412 7413 7414 7415 7416 7417 7418 7419 7420 7421 7422 7423 7424 7425 7426 7427 7428 7429 7430 7431 7432 7433 7434 7435 7436 7437 7438 7439 7440 7441 7442 7443 7444 7445 7446 7447 7448 7449 7450 7451 7452 7453 7454 7455 7456 7457 7458 7459 7460 7461 7462
		options |= IPV6_DEFAULT_DDB_ENTRY;

	rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
	if (rval == QLA_ERROR)
		goto exit_ddb_apply;

	dev_db_start_offset += (fnode_sess->target_id *
				sizeof(*fw_ddb_entry));

	qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
	fw_ddb_entry->cookie = DDB_VALID_COOKIE;

	rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
				 sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);

	if (rval == QLA_SUCCESS) {
		fnode_sess->flash_state = DEV_DB_PERSISTENT;
		ql4_printk(KERN_INFO, ha,
			   "%s: flash node %u of host %lu written to flash\n",
			   __func__, fnode_sess->target_id, ha->host_no);
	} else {
		rval = -EIO;
		ql4_printk(KERN_ERR, ha,
			   "%s: Error while writing flash node %u of host %lu to flash\n",
			   __func__, fnode_sess->target_id, ha->host_no);
	}

exit_ddb_apply:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
	return rval;
}

static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
					   struct dev_db_entry *fw_ddb_entry,
					   uint16_t idx)
{
	struct dev_db_entry *ddb_entry = NULL;
	dma_addr_t ddb_entry_dma;
	unsigned long wtime;
	uint32_t mbx_sts = 0;
	uint32_t state = 0, conn_err = 0;
	uint16_t tmo = 0;
	int ret = 0;

	ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
				       &ddb_entry_dma, GFP_KERNEL);
	if (!ddb_entry) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		return QLA_ERROR;
	}

	memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));

	ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
	if (ret != QLA_SUCCESS) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to set ddb entry for index %d\n",
				  __func__, idx));
		goto exit_ddb_conn_open;
	}

	qla4xxx_conn_open(ha, idx);

	/* To ensure that sendtargets is done, wait for at least 12 secs */
	tmo = ((ha->def_timeout > LOGIN_TOV) &&
	       (ha->def_timeout < LOGIN_TOV * 10) ?
	       ha->def_timeout : LOGIN_TOV);

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Default time to wait for login to ddb %d\n", tmo));

	wtime = jiffies + (HZ * tmo);
	do {
		ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
					      NULL, &state, &conn_err, NULL,
					      NULL);
		if (ret == QLA_ERROR)
			continue;

		if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
		    state == DDB_DS_SESSION_FAILED)
			break;

		schedule_timeout_uninterruptible(HZ / 10);
	} while (time_after(wtime, jiffies));

exit_ddb_conn_open:
	if (ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
				  ddb_entry, ddb_entry_dma);
	return ret;
}

static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
7463 7464
				struct dev_db_entry *fw_ddb_entry,
				uint16_t target_id)
7465 7466 7467 7468 7469 7470 7471 7472 7473 7474 7475 7476 7477 7478 7479 7480 7481 7482 7483 7484 7485 7486 7487 7488
{
	struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
	struct list_head list_nt;
	uint16_t ddb_index;
	int ret = 0;

	if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
		ql4_printk(KERN_WARNING, ha,
			   "%s: A discovery already in progress!\n", __func__);
		return QLA_ERROR;
	}

	INIT_LIST_HEAD(&list_nt);

	set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);

	ret = qla4xxx_get_ddb_index(ha, &ddb_index);
	if (ret == QLA_ERROR)
		goto exit_login_st_clr_bit;

	ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
	if (ret == QLA_ERROR)
		goto exit_login_st;

7489
	qla4xxx_build_new_nt_list(ha, &list_nt, target_id);
7490 7491 7492 7493 7494 7495 7496 7497 7498 7499 7500 7501 7502 7503 7504 7505 7506 7507 7508 7509 7510 7511 7512 7513 7514 7515

	list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
		list_del_init(&ddb_idx->list);
		qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
		vfree(ddb_idx);
	}

exit_login_st:
	if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
		ql4_printk(KERN_ERR, ha,
			   "Unable to clear DDB index = 0x%x\n", ddb_index);
	}

	clear_bit(ddb_index, ha->ddb_idx_map);

exit_login_st_clr_bit:
	clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
	return ret;
}

static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
				struct dev_db_entry *fw_ddb_entry,
				uint16_t idx)
{
	int ret = QLA_ERROR;

7516
	ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7517 7518 7519 7520 7521 7522 7523 7524 7525 7526 7527 7528 7529 7530 7531 7532 7533 7534 7535 7536 7537 7538 7539 7540 7541 7542 7543 7544 7545 7546 7547 7548 7549 7550 7551 7552 7553 7554 7555 7556 7557 7558 7559
	if (ret != QLA_SUCCESS)
		ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
					      idx);
	else
		ret = -EPERM;

	return ret;
}

/**
 * qla4xxx_sysfs_ddb_login - Login to the specified target
 * @fnode_sess: pointer to session attrs of flash ddb entry
 * @fnode_conn: pointer to connection attrs of flash ddb entry
 *
 * This logs in to the specified target
 **/
static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
				   struct iscsi_bus_flash_conn *fnode_conn)
{
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	uint32_t options = 0;
	int ret = 0;

	if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Target info is not persistent\n", __func__);
		ret = -EIO;
		goto exit_ddb_login;
	}

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		ret = -ENOMEM;
		goto exit_ddb_login;
	}

7560
	if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7561 7562 7563 7564 7565 7566 7567 7568 7569 7570
		options |= IPV6_DEFAULT_DDB_ENTRY;

	ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
	if (ret == QLA_ERROR)
		goto exit_ddb_login;

	qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
	fw_ddb_entry->cookie = DDB_VALID_COOKIE;

	if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7571 7572
		ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
					   fnode_sess->target_id);
7573 7574 7575 7576 7577 7578 7579 7580 7581 7582 7583 7584 7585 7586 7587 7588 7589 7590 7591 7592 7593 7594 7595 7596 7597 7598 7599 7600 7601 7602 7603 7604 7605 7606 7607 7608 7609 7610 7611 7612 7613 7614 7615 7616
	else
		ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
					   fnode_sess->target_id);

	if (ret > 0)
		ret = -EIO;

exit_ddb_login:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
	return ret;
}

/**
 * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
 * @cls_sess: pointer to session to be logged out
 *
 * This performs session log out from the specified target
 **/
static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
{
	struct iscsi_session *sess;
	struct ddb_entry *ddb_entry = NULL;
	struct scsi_qla_host *ha;
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	unsigned long flags;
	unsigned long wtime;
	uint32_t ddb_state;
	int options;
	int ret = 0;

	sess = cls_sess->dd_data;
	ddb_entry = sess->dd_data;
	ha = ddb_entry->ha;

	if (ddb_entry->ddb_type != FLASH_DDB) {
		ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
			   __func__);
		ret = -ENXIO;
		goto exit_ddb_logout;
	}

7617 7618 7619 7620 7621 7622 7623 7624
	if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Logout from boot target entry is not permitted.\n",
			   __func__);
		ret = -EPERM;
		goto exit_ddb_logout;
	}

7625 7626 7627 7628 7629 7630 7631 7632 7633
	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		ret = -ENOMEM;
		goto exit_ddb_logout;
	}

7634 7635 7636 7637 7638 7639 7640 7641 7642 7643 7644 7645 7646 7647 7648 7649 7650 7651 7652 7653 7654 7655 7656 7657 7658 7659 7660 7661 7662 7663 7664 7665
	if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
		goto ddb_logout_init;

	ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
				      fw_ddb_entry, fw_ddb_entry_dma,
				      NULL, NULL, &ddb_state, NULL,
				      NULL, NULL);
	if (ret == QLA_ERROR)
		goto ddb_logout_init;

	if (ddb_state == DDB_DS_SESSION_ACTIVE)
		goto ddb_logout_init;

	/* wait until next relogin is triggered using DF_RELOGIN and
	 * clear DF_RELOGIN to avoid invocation of further relogin
	 */
	wtime = jiffies + (HZ * RELOGIN_TOV);
	do {
		if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
			goto ddb_logout_init;

		schedule_timeout_uninterruptible(HZ);
	} while ((time_after(wtime, jiffies)));

ddb_logout_init:
	atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
	atomic_set(&ddb_entry->relogin_timer, 0);

	options = LOGOUT_OPTION_CLOSE_SESSION;
	qla4xxx_session_logout_ddb(ha, ddb_entry, options);

	memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
7666 7667 7668 7669 7670 7671 7672 7673 7674 7675 7676 7677 7678 7679 7680 7681 7682 7683 7684 7685 7686 7687 7688 7689 7690 7691 7692 7693 7694
	wtime = jiffies + (HZ * LOGOUT_TOV);
	do {
		ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
					      fw_ddb_entry, fw_ddb_entry_dma,
					      NULL, NULL, &ddb_state, NULL,
					      NULL, NULL);
		if (ret == QLA_ERROR)
			goto ddb_logout_clr_sess;

		if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
		    (ddb_state == DDB_DS_SESSION_FAILED))
			goto ddb_logout_clr_sess;

		schedule_timeout_uninterruptible(HZ);
	} while ((time_after(wtime, jiffies)));

ddb_logout_clr_sess:
	qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
	/*
	 * we have decremented the reference count of the driver
	 * when we setup the session to have the driver unload
	 * to be seamless without actually destroying the
	 * session
	 **/
	try_module_get(qla4xxx_iscsi_transport.owner);
	iscsi_destroy_endpoint(ddb_entry->conn->ep);

	spin_lock_irqsave(&ha->hardware_lock, flags);
	qla4xxx_free_ddb(ha, ddb_entry);
7695
	clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
7696 7697 7698 7699
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

	iscsi_session_teardown(ddb_entry->sess);

7700
	clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
7701 7702 7703 7704 7705 7706 7707 7708 7709 7710 7711 7712 7713 7714 7715 7716 7717 7718 7719 7720 7721 7722 7723 7724 7725 7726 7727 7728 7729 7730 7731 7732 7733 7734 7735 7736 7737 7738 7739 7740 7741 7742 7743 7744 7745 7746 7747 7748 7749 7750 7751 7752 7753 7754 7755 7756 7757 7758 7759 7760 7761 7762 7763 7764 7765 7766 7767 7768 7769 7770 7771 7772
	ret = QLA_SUCCESS;

exit_ddb_logout:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
	return ret;
}

/**
 * qla4xxx_sysfs_ddb_logout - Logout from the specified target
 * @fnode_sess: pointer to session attrs of flash ddb entry
 * @fnode_conn: pointer to connection attrs of flash ddb entry
 *
 * This performs log out from the specified target
 **/
static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
				    struct iscsi_bus_flash_conn *fnode_conn)
{
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct ql4_tuple_ddb *flash_tddb = NULL;
	struct ql4_tuple_ddb *tmp_tddb = NULL;
	struct dev_db_entry *fw_ddb_entry = NULL;
	struct ddb_entry *ddb_entry = NULL;
	dma_addr_t fw_ddb_dma;
	uint32_t next_idx = 0;
	uint32_t state = 0, conn_err = 0;
	uint16_t conn_id = 0;
	int idx, index;
	int status, ret = 0;

	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
				      &fw_ddb_dma);
	if (fw_ddb_entry == NULL) {
		ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
		ret = -ENOMEM;
		goto exit_ddb_logout;
	}

	flash_tddb = vzalloc(sizeof(*flash_tddb));
	if (!flash_tddb) {
		ql4_printk(KERN_WARNING, ha,
			   "%s:Memory Allocation failed.\n", __func__);
		ret = -ENOMEM;
		goto exit_ddb_logout;
	}

	tmp_tddb = vzalloc(sizeof(*tmp_tddb));
	if (!tmp_tddb) {
		ql4_printk(KERN_WARNING, ha,
			   "%s:Memory Allocation failed.\n", __func__);
		ret = -ENOMEM;
		goto exit_ddb_logout;
	}

	if (!fnode_sess->targetname) {
		ql4_printk(KERN_ERR, ha,
			   "%s:Cannot logout from SendTarget entry\n",
			   __func__);
		ret = -EPERM;
		goto exit_ddb_logout;
	}

	if (fnode_sess->is_boot_target) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Logout from boot target entry is not permitted.\n",
			   __func__);
		ret = -EPERM;
		goto exit_ddb_logout;
	}

7773
	strlcpy(flash_tddb->iscsi_name, fnode_sess->targetname,
7774 7775
		ISCSI_NAME_SIZE);

7776
	if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7777 7778 7779 7780 7781 7782 7783 7784 7785 7786 7787 7788 7789 7790 7791 7792 7793 7794 7795 7796 7797 7798 7799 7800 7801 7802 7803 7804 7805 7806 7807 7808 7809 7810 7811 7812 7813 7814 7815 7816 7817 7818 7819 7820 7821 7822 7823 7824 7825 7826 7827 7828 7829 7830 7831 7832 7833 7834 7835 7836
		sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
	else
		sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);

	flash_tddb->tpgt = fnode_sess->tpgt;
	flash_tddb->port = fnode_conn->port;

	COPY_ISID(flash_tddb->isid, fnode_sess->isid);

	for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
		if (ddb_entry == NULL)
			continue;

		if (ddb_entry->ddb_type != FLASH_DDB)
			continue;

		index = ddb_entry->sess->target_id;
		status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
						 fw_ddb_dma, NULL, &next_idx,
						 &state, &conn_err, NULL,
						 &conn_id);
		if (status == QLA_ERROR) {
			ret = -ENOMEM;
			break;
		}

		qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);

		status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
						   true);
		if (status == QLA_SUCCESS) {
			ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
			break;
		}
	}

	if (idx == MAX_DDB_ENTRIES)
		ret = -ESRCH;

exit_ddb_logout:
	if (flash_tddb)
		vfree(flash_tddb);
	if (tmp_tddb)
		vfree(tmp_tddb);
	if (fw_ddb_entry)
		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);

	return ret;
}

static int
qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
			    int param, char *buf)
{
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct iscsi_bus_flash_conn *fnode_conn;
	struct ql4_chap_table chap_tbl;
	struct device *dev;
7837
	int parent_type;
7838 7839
	int rc = 0;

7840
	dev = iscsi_find_flashnode_conn(fnode_sess);
7841 7842 7843 7844 7845 7846 7847 7848 7849 7850 7851 7852 7853 7854 7855 7856 7857 7858 7859 7860 7861 7862 7863 7864 7865 7866 7867 7868 7869 7870 7871 7872 7873 7874 7875 7876 7877 7878 7879 7880 7881 7882 7883 7884 7885 7886 7887 7888 7889 7890 7891 7892 7893 7894 7895 7896 7897 7898 7899 7900 7901 7902 7903 7904 7905 7906 7907 7908 7909 7910 7911 7912 7913 7914 7915 7916 7917 7918 7919 7920 7921 7922 7923 7924 7925 7926 7927 7928 7929 7930 7931 7932 7933 7934 7935 7936 7937
	if (!dev)
		return -EIO;

	fnode_conn = iscsi_dev_to_flash_conn(dev);

	switch (param) {
	case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
		rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
		break;
	case ISCSI_FLASHNODE_PORTAL_TYPE:
		rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
		break;
	case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
		rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
		break;
	case ISCSI_FLASHNODE_DISCOVERY_SESS:
		rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
		break;
	case ISCSI_FLASHNODE_ENTRY_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
		break;
	case ISCSI_FLASHNODE_HDR_DGST_EN:
		rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
		break;
	case ISCSI_FLASHNODE_DATA_DGST_EN:
		rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
		break;
	case ISCSI_FLASHNODE_IMM_DATA_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
		break;
	case ISCSI_FLASHNODE_INITIAL_R2T_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
		break;
	case ISCSI_FLASHNODE_DATASEQ_INORDER:
		rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
		break;
	case ISCSI_FLASHNODE_PDU_INORDER:
		rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
		break;
	case ISCSI_FLASHNODE_CHAP_AUTH_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
		break;
	case ISCSI_FLASHNODE_SNACK_REQ_EN:
		rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
		break;
	case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
		break;
	case ISCSI_FLASHNODE_BIDI_CHAP_EN:
		rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
		break;
	case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
		rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
		break;
	case ISCSI_FLASHNODE_ERL:
		rc = sprintf(buf, "%u\n", fnode_sess->erl);
		break;
	case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
		break;
	case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
		break;
	case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
		break;
	case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
		break;
	case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
		break;
	case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
		rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
		break;
	case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
		rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
		break;
	case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
		rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
		break;
	case ISCSI_FLASHNODE_FIRST_BURST:
		rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
		break;
	case ISCSI_FLASHNODE_DEF_TIME2WAIT:
		rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
		break;
	case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
		rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
		break;
	case ISCSI_FLASHNODE_MAX_R2T:
		rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
		break;
	case ISCSI_FLASHNODE_KEEPALIVE_TMO:
		rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
		break;
	case ISCSI_FLASHNODE_ISID:
7938
		rc = sprintf(buf, "%pm\n", fnode_sess->isid);
7939 7940 7941 7942 7943 7944 7945 7946 7947 7948 7949 7950 7951 7952 7953
		break;
	case ISCSI_FLASHNODE_TSID:
		rc = sprintf(buf, "%u\n", fnode_sess->tsid);
		break;
	case ISCSI_FLASHNODE_PORT:
		rc = sprintf(buf, "%d\n", fnode_conn->port);
		break;
	case ISCSI_FLASHNODE_MAX_BURST:
		rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
		break;
	case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
		rc = sprintf(buf, "%u\n",
			     fnode_sess->default_taskmgmt_timeout);
		break;
	case ISCSI_FLASHNODE_IPADDR:
7954
		if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7955 7956 7957 7958 7959 7960 7961 7962 7963 7964 7965
			rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
		else
			rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
		break;
	case ISCSI_FLASHNODE_ALIAS:
		if (fnode_sess->targetalias)
			rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
		else
			rc = sprintf(buf, "\n");
		break;
	case ISCSI_FLASHNODE_REDIRECT_IPADDR:
7966
		if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7967 7968 7969 7970 7971 7972 7973 7974 7975 7976 7977 7978 7979 7980 7981 7982
			rc = sprintf(buf, "%pI6\n",
				     fnode_conn->redirect_ipaddr);
		else
			rc = sprintf(buf, "%pI4\n",
				     fnode_conn->redirect_ipaddr);
		break;
	case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
		rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
		break;
	case ISCSI_FLASHNODE_LOCAL_PORT:
		rc = sprintf(buf, "%u\n", fnode_conn->local_port);
		break;
	case ISCSI_FLASHNODE_IPV4_TOS:
		rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
		break;
	case ISCSI_FLASHNODE_IPV6_TC:
7983
		if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7984 7985 7986 7987 7988 7989 7990 7991 7992
			rc = sprintf(buf, "%u\n",
				     fnode_conn->ipv6_traffic_class);
		else
			rc = sprintf(buf, "\n");
		break;
	case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
		rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
		break;
	case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
7993
		if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7994 7995 7996 7997 7998 7999
			rc = sprintf(buf, "%pI6\n",
				     fnode_conn->link_local_ipv6_addr);
		else
			rc = sprintf(buf, "\n");
		break;
	case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8000
		rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
8001 8002 8003 8004 8005 8006
		break;
	case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
		if (fnode_sess->discovery_parent_type == DDB_ISNS)
			parent_type = ISCSI_DISC_PARENT_ISNS;
		else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
			parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8007
		else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
8008 8009 8010 8011 8012 8013 8014 8015 8016 8017 8018 8019 8020 8021 8022 8023 8024 8025 8026 8027 8028 8029 8030 8031 8032 8033 8034 8035 8036 8037 8038 8039 8040 8041 8042 8043 8044 8045 8046 8047 8048 8049 8050 8051 8052 8053 8054 8055 8056 8057 8058 8059 8060 8061 8062 8063 8064 8065 8066 8067
			parent_type = ISCSI_DISC_PARENT_SENDTGT;
		else
			parent_type = ISCSI_DISC_PARENT_UNKNOWN;

		rc = sprintf(buf, "%s\n",
			     iscsi_get_discovery_parent_name(parent_type));
		break;
	case ISCSI_FLASHNODE_NAME:
		if (fnode_sess->targetname)
			rc = sprintf(buf, "%s\n", fnode_sess->targetname);
		else
			rc = sprintf(buf, "\n");
		break;
	case ISCSI_FLASHNODE_TPGT:
		rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
		break;
	case ISCSI_FLASHNODE_TCP_XMIT_WSF:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
		break;
	case ISCSI_FLASHNODE_TCP_RECV_WSF:
		rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
		break;
	case ISCSI_FLASHNODE_CHAP_OUT_IDX:
		rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
		break;
	case ISCSI_FLASHNODE_USERNAME:
		if (fnode_sess->chap_auth_en) {
			qla4xxx_get_uni_chap_at_index(ha,
						      chap_tbl.name,
						      chap_tbl.secret,
						      fnode_sess->chap_out_idx);
			rc = sprintf(buf, "%s\n", chap_tbl.name);
		} else {
			rc = sprintf(buf, "\n");
		}
		break;
	case ISCSI_FLASHNODE_PASSWORD:
		if (fnode_sess->chap_auth_en) {
			qla4xxx_get_uni_chap_at_index(ha,
						      chap_tbl.name,
						      chap_tbl.secret,
						      fnode_sess->chap_out_idx);
			rc = sprintf(buf, "%s\n", chap_tbl.secret);
		} else {
			rc = sprintf(buf, "\n");
		}
		break;
	case ISCSI_FLASHNODE_STATSN:
		rc = sprintf(buf, "%u\n", fnode_conn->statsn);
		break;
	case ISCSI_FLASHNODE_EXP_STATSN:
		rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
		break;
	case ISCSI_FLASHNODE_IS_BOOT_TGT:
		rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
		break;
	default:
		rc = -ENOSYS;
		break;
	}
8068 8069

	put_device(dev);
8070 8071 8072 8073 8074 8075 8076 8077 8078 8079 8080 8081 8082 8083 8084 8085 8086 8087 8088 8089
	return rc;
}

/**
 * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
 * @fnode_sess: pointer to session attrs of flash ddb entry
 * @fnode_conn: pointer to connection attrs of flash ddb entry
 * @data: Parameters and their values to update
 * @len: len of data
 *
 * This sets the parameter of flash ddb entry and writes them to flash
 **/
static int
qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
			    struct iscsi_bus_flash_conn *fnode_conn,
			    void *data, int len)
{
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	struct iscsi_flashnode_param_info *fnode_param;
8090
	struct ql4_chap_table chap_tbl;
8091
	struct nlattr *attr;
8092
	uint16_t chap_out_idx = INVALID_ENTRY;
8093 8094 8095
	int rc = QLA_ERROR;
	uint32_t rem = len;

8096
	memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
8097 8098 8099 8100 8101 8102 8103 8104 8105 8106 8107 8108 8109 8110 8111 8112 8113 8114 8115 8116 8117 8118 8119 8120 8121 8122 8123 8124 8125 8126 8127 8128 8129 8130 8131 8132 8133 8134 8135 8136 8137
	nla_for_each_attr(attr, data, len, rem) {
		fnode_param = nla_data(attr);

		switch (fnode_param->param) {
		case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
			fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_PORTAL_TYPE:
			memcpy(fnode_sess->portal_type, fnode_param->value,
			       strlen(fnode_sess->portal_type));
			break;
		case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
			fnode_sess->auto_snd_tgt_disable =
							fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_DISCOVERY_SESS:
			fnode_sess->discovery_sess = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_ENTRY_EN:
			fnode_sess->entry_state = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_HDR_DGST_EN:
			fnode_conn->hdrdgst_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_DATA_DGST_EN:
			fnode_conn->datadgst_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_IMM_DATA_EN:
			fnode_sess->imm_data_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_INITIAL_R2T_EN:
			fnode_sess->initial_r2t_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_DATASEQ_INORDER:
			fnode_sess->dataseq_inorder_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_PDU_INORDER:
			fnode_sess->pdu_inorder_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_CHAP_AUTH_EN:
			fnode_sess->chap_auth_en = fnode_param->value[0];
8138 8139 8140 8141
			/* Invalidate chap index if chap auth is disabled */
			if (!fnode_sess->chap_auth_en)
				fnode_sess->chap_out_idx = INVALID_ENTRY;

8142 8143 8144 8145 8146 8147 8148 8149 8150 8151 8152 8153 8154 8155 8156 8157 8158 8159 8160 8161 8162 8163 8164 8165 8166 8167 8168 8169 8170 8171 8172 8173 8174 8175 8176 8177 8178 8179 8180 8181 8182 8183 8184 8185 8186 8187 8188 8189 8190 8191 8192 8193 8194 8195 8196 8197 8198 8199 8200 8201 8202 8203 8204 8205 8206 8207 8208 8209 8210 8211 8212 8213 8214 8215 8216 8217 8218 8219 8220 8221 8222 8223 8224 8225 8226 8227 8228 8229 8230 8231 8232 8233 8234 8235 8236 8237 8238 8239 8240 8241 8242 8243 8244 8245 8246 8247 8248 8249 8250 8251 8252 8253 8254 8255 8256 8257 8258 8259 8260
			break;
		case ISCSI_FLASHNODE_SNACK_REQ_EN:
			fnode_conn->snack_req_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
			fnode_sess->discovery_logout_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_BIDI_CHAP_EN:
			fnode_sess->bidi_chap_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
			fnode_sess->discovery_auth_optional =
							fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_ERL:
			fnode_sess->erl = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
			fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
			fnode_conn->tcp_nagle_disable = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
			fnode_conn->tcp_wsf_disable = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
			fnode_conn->tcp_timer_scale = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
			fnode_conn->tcp_timestamp_en = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
			fnode_conn->fragment_disable = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
			fnode_conn->max_recv_dlength =
					*(unsigned *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
			fnode_conn->max_xmit_dlength =
					*(unsigned *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_FIRST_BURST:
			fnode_sess->first_burst =
					*(unsigned *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_DEF_TIME2WAIT:
			fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
			fnode_sess->time2retain =
						*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_MAX_R2T:
			fnode_sess->max_r2t =
					*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_KEEPALIVE_TMO:
			fnode_conn->keepalive_timeout =
				*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_ISID:
			memcpy(fnode_sess->isid, fnode_param->value,
			       sizeof(fnode_sess->isid));
			break;
		case ISCSI_FLASHNODE_TSID:
			fnode_sess->tsid = *(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_PORT:
			fnode_conn->port = *(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_MAX_BURST:
			fnode_sess->max_burst = *(unsigned *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
			fnode_sess->default_taskmgmt_timeout =
						*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_IPADDR:
			memcpy(fnode_conn->ipaddress, fnode_param->value,
			       IPv6_ADDR_LEN);
			break;
		case ISCSI_FLASHNODE_ALIAS:
			rc = iscsi_switch_str_param(&fnode_sess->targetalias,
						    (char *)fnode_param->value);
			break;
		case ISCSI_FLASHNODE_REDIRECT_IPADDR:
			memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
			       IPv6_ADDR_LEN);
			break;
		case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
			fnode_conn->max_segment_size =
					*(unsigned *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_LOCAL_PORT:
			fnode_conn->local_port =
						*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_IPV4_TOS:
			fnode_conn->ipv4_tos = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_IPV6_TC:
			fnode_conn->ipv6_traffic_class = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
			fnode_conn->ipv6_flow_label = fnode_param->value[0];
			break;
		case ISCSI_FLASHNODE_NAME:
			rc = iscsi_switch_str_param(&fnode_sess->targetname,
						    (char *)fnode_param->value);
			break;
		case ISCSI_FLASHNODE_TPGT:
			fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
			memcpy(fnode_conn->link_local_ipv6_addr,
			       fnode_param->value, IPv6_ADDR_LEN);
			break;
8261 8262
		case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
			fnode_sess->discovery_parent_idx =
8263 8264 8265 8266 8267 8268 8269 8270 8271 8272 8273 8274 8275 8276 8277 8278 8279
						*(uint16_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_TCP_XMIT_WSF:
			fnode_conn->tcp_xmit_wsf =
						*(uint8_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_TCP_RECV_WSF:
			fnode_conn->tcp_recv_wsf =
						*(uint8_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_STATSN:
			fnode_conn->statsn = *(uint32_t *)fnode_param->value;
			break;
		case ISCSI_FLASHNODE_EXP_STATSN:
			fnode_conn->exp_statsn =
						*(uint32_t *)fnode_param->value;
			break;
8280 8281 8282 8283 8284 8285 8286 8287 8288 8289 8290
		case ISCSI_FLASHNODE_CHAP_OUT_IDX:
			chap_out_idx = *(uint16_t *)fnode_param->value;
			if (!qla4xxx_get_uni_chap_at_index(ha,
							   chap_tbl.name,
							   chap_tbl.secret,
							   chap_out_idx)) {
				fnode_sess->chap_out_idx = chap_out_idx;
				/* Enable chap auth if chap index is valid */
				fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
			}
			break;
8291 8292 8293 8294 8295 8296 8297 8298 8299 8300 8301 8302 8303 8304 8305 8306 8307 8308 8309 8310 8311 8312 8313 8314 8315 8316 8317 8318 8319
		default:
			ql4_printk(KERN_ERR, ha,
				   "%s: No such sysfs attribute\n", __func__);
			rc = -ENOSYS;
			goto exit_set_param;
		}
	}

	rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);

exit_set_param:
	return rc;
}

/**
 * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
 * @fnode_sess: pointer to session attrs of flash ddb entry
 *
 * This invalidates the flash ddb entry at the given index
 **/
static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
{
	struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
	struct scsi_qla_host *ha = to_qla_host(shost);
	uint32_t dev_db_start_offset;
	uint32_t dev_db_end_offset;
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	uint16_t *ddb_cookie = NULL;
8320
	size_t ddb_size = 0;
8321
	void *pddb = NULL;
8322 8323 8324 8325 8326 8327 8328 8329 8330 8331 8332 8333 8334 8335 8336 8337
	int target_id;
	int rc = 0;

	if (fnode_sess->is_boot_target) {
		rc = -EPERM;
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Deletion of boot target entry is not permitted.\n",
				  __func__));
		goto exit_ddb_del;
	}

	if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
		goto sysfs_ddb_del;

	if (is_qla40XX(ha)) {
		dev_db_start_offset = FLASH_OFFSET_DB_INFO;
8338 8339 8340 8341
		dev_db_end_offset = FLASH_OFFSET_DB_END;
		dev_db_start_offset += (fnode_sess->target_id *
				       sizeof(*fw_ddb_entry));
		ddb_size = sizeof(*fw_ddb_entry);
8342 8343 8344 8345 8346 8347 8348 8349 8350
	} else {
		dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
				      (ha->hw.flt_region_ddb << 2);
		/* flt_ddb_size is DDB table size for both ports
		 * so divide it by 2 to calculate the offset for second port
		 */
		if (ha->port_num == 1)
			dev_db_start_offset += (ha->hw.flt_ddb_size / 2);

8351 8352 8353 8354 8355
		dev_db_end_offset = dev_db_start_offset +
				    (ha->hw.flt_ddb_size / 2);

		dev_db_start_offset += (fnode_sess->target_id *
				       sizeof(*fw_ddb_entry));
8356
		dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
8357 8358 8359

		ddb_size = sizeof(*ddb_cookie);
	}
8360 8361 8362 8363 8364 8365 8366 8367 8368 8369 8370

	DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
			  __func__, dev_db_start_offset, dev_db_end_offset));

	if (dev_db_start_offset > dev_db_end_offset) {
		rc = -EIO;
		DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
				  __func__, fnode_sess->target_id));
		goto exit_ddb_del;
	}

8371 8372 8373 8374 8375 8376 8377 8378 8379 8380 8381 8382 8383 8384 8385 8386 8387 8388
	pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
				  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!pddb) {
		rc = -ENOMEM;
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		goto exit_ddb_del;
	}

	if (is_qla40XX(ha)) {
		fw_ddb_entry = pddb;
		memset(fw_ddb_entry, 0, ddb_size);
		ddb_cookie = &fw_ddb_entry->cookie;
	} else {
		ddb_cookie = pddb;
	}

8389 8390 8391
	/* invalidate the cookie */
	*ddb_cookie = 0xFFEE;
	qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
8392
			  ddb_size, FLASH_OPT_RMW_COMMIT);
8393 8394 8395 8396 8397 8398 8399 8400

sysfs_ddb_del:
	target_id = fnode_sess->target_id;
	iscsi_destroy_flashnode_sess(fnode_sess);
	ql4_printk(KERN_INFO, ha,
		   "%s: session and conn entries for flashnode %u of host %lu deleted\n",
		   __func__, target_id, ha->host_no);
exit_ddb_del:
8401 8402 8403
	if (pddb)
		dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
				  fw_ddb_entry_dma);
8404 8405 8406 8407 8408 8409 8410 8411 8412
	return rc;
}

/**
 * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
 * @ha: pointer to adapter structure
 *
 * Export the firmware DDB for all send targets and normal targets to sysfs.
 **/
8413
int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
8414 8415 8416 8417 8418 8419 8420 8421 8422 8423 8424 8425 8426 8427 8428 8429 8430
{
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	uint16_t max_ddbs;
	uint16_t idx = 0;
	int ret = QLA_SUCCESS;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
					  sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		DEBUG2(ql4_printk(KERN_ERR, ha,
				  "%s: Unable to allocate dma buffer\n",
				  __func__));
		return -ENOMEM;
	}

8431
	max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
8432 8433 8434 8435 8436 8437 8438 8439 8440 8441 8442 8443 8444 8445 8446 8447 8448 8449 8450 8451 8452 8453 8454 8455 8456 8457 8458 8459 8460 8461 8462 8463 8464 8465 8466 8467 8468 8469 8470 8471 8472 8473 8474 8475 8476 8477 8478 8479 8480 8481 8482 8483 8484 8485 8486 8487 8488 8489 8490 8491 8492 8493 8494 8495 8496 8497 8498 8499 8500 8501 8502 8503 8504 8505 8506 8507 8508 8509 8510 8511 8512
				     MAX_DEV_DB_ENTRIES;

	for (idx = 0; idx < max_ddbs; idx++) {
		if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
					     idx))
			continue;

		ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
		if (ret) {
			ret = -EIO;
			break;
		}
	}

	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
			  fw_ddb_entry_dma);

	return ret;
}

static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
{
	iscsi_destroy_all_flashnode(ha->host);
}

/**
 * qla4xxx_build_ddb_list - Build ddb list and setup sessions
 * @ha: pointer to adapter structure
 * @is_reset: Is this init path or reset path
 *
 * Create a list of sendtargets (st) from firmware DDBs, issue send targets
 * using connection open, then create the list of normal targets (nt)
 * from firmware DDBs. Based on the list of nt setup session and connection
 * objects.
 **/
void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
{
	uint16_t tmo = 0;
	struct list_head list_st, list_nt;
	struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
	unsigned long wtime;

	if (!test_bit(AF_LINK_UP, &ha->flags)) {
		set_bit(AF_BUILD_DDB_LIST, &ha->flags);
		ha->is_reset = is_reset;
		return;
	}

	INIT_LIST_HEAD(&list_st);
	INIT_LIST_HEAD(&list_nt);

	qla4xxx_build_st_list(ha, &list_st);

	/* Before issuing conn open mbox, ensure all IPs states are configured
	 * Note, conn open fails if IPs are not configured
	 */
	qla4xxx_wait_for_ip_configuration(ha);

	/* Go thru the STs and fire the sendtargets by issuing conn open mbx */
	list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
		qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
	}

	/* Wait to ensure all sendtargets are done for min 12 sec wait */
	tmo = ((ha->def_timeout > LOGIN_TOV) &&
	       (ha->def_timeout < LOGIN_TOV * 10) ?
	       ha->def_timeout : LOGIN_TOV);

	DEBUG2(ql4_printk(KERN_INFO, ha,
			  "Default time to wait for build ddb %d\n", tmo));

	wtime = jiffies + (HZ * tmo);
	do {
		if (list_empty(&list_st))
			break;

		qla4xxx_remove_failed_ddb(ha, &list_st);
		schedule_timeout_uninterruptible(HZ / 10);
	} while (time_after(wtime, jiffies));


8513
	qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);
8514

8515
	qla4xxx_free_ddb_list(&list_st);
8516 8517 8518 8519 8520 8521 8522 8523 8524 8525 8526 8527 8528 8529 8530 8531 8532 8533 8534 8535 8536 8537 8538 8539 8540 8541 8542 8543 8544 8545 8546 8547 8548 8549 8550 8551 8552 8553 8554 8555 8556 8557 8558 8559 8560 8561 8562 8563 8564 8565 8566 8567 8568 8569 8570 8571 8572 8573 8574 8575 8576 8577 8578 8579 8580 8581 8582 8583 8584 8585 8586 8587 8588 8589 8590 8591 8592 8593 8594 8595 8596 8597 8598 8599 8600 8601 8602 8603 8604 8605 8606 8607 8608 8609 8610 8611 8612 8613 8614 8615 8616 8617
	qla4xxx_free_ddb_list(&list_nt);

	qla4xxx_free_ddb_index(ha);
}

/**
 * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
 * response.
 * @ha: pointer to adapter structure
 *
 * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
 * set in DDB and we will wait for login response of boot targets during
 * probe.
 **/
static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
{
	struct ddb_entry *ddb_entry;
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	unsigned long wtime;
	uint32_t ddb_state;
	int max_ddbs, idx, ret;

	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
				     MAX_DEV_DB_ENTRIES;

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		goto exit_login_resp;
	}

	wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);

	for (idx = 0; idx < max_ddbs; idx++) {
		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
		if (ddb_entry == NULL)
			continue;

		if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
			DEBUG2(ql4_printk(KERN_INFO, ha,
					  "%s: DDB index [%d]\n", __func__,
					  ddb_entry->fw_ddb_index));
			do {
				ret = qla4xxx_get_fwddb_entry(ha,
						ddb_entry->fw_ddb_index,
						fw_ddb_entry, fw_ddb_entry_dma,
						NULL, NULL, &ddb_state, NULL,
						NULL, NULL);
				if (ret == QLA_ERROR)
					goto exit_login_resp;

				if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
				    (ddb_state == DDB_DS_SESSION_FAILED))
					break;

				schedule_timeout_uninterruptible(HZ);

			} while ((time_after(wtime, jiffies)));

			if (!time_after(wtime, jiffies)) {
				DEBUG2(ql4_printk(KERN_INFO, ha,
						  "%s: Login response wait timer expired\n",
						  __func__));
				 goto exit_login_resp;
			}
		}
	}

exit_login_resp:
	if (fw_ddb_entry)
		dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
				  fw_ddb_entry, fw_ddb_entry_dma);
}

/**
 * qla4xxx_probe_adapter - callback function to probe HBA
 * @pdev: pointer to pci_dev structure
 * @pci_device_id: pointer to pci_device entry
 *
 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
 * It returns zero if successful. It also initializes all data necessary for
 * the driver.
 **/
static int qla4xxx_probe_adapter(struct pci_dev *pdev,
				 const struct pci_device_id *ent)
{
	int ret = -ENODEV, status;
	struct Scsi_Host *host;
	struct scsi_qla_host *ha;
	uint8_t init_retry_count = 0;
	char buf[34];
	struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
	uint32_t dev_state;

	if (pci_enable_device(pdev))
		return -1;

	host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
	if (host == NULL) {
8618 8619 8620 8621 8622 8623
		printk(KERN_WARNING
		       "qla4xxx: Couldn't allocate host from scsi layer!\n");
		goto probe_disable_device;
	}

	/* Clear our data area */
8624
	ha = to_qla_host(host);
8625 8626 8627 8628 8629 8630
	memset(ha, 0, sizeof(*ha));

	/* Save the information from PCI BIOS.	*/
	ha->pdev = pdev;
	ha->host = host;
	ha->host_no = host->host_no;
8631
	ha->func_num = PCI_FUNC(ha->pdev->devfn);
8632

8633 8634
	pci_enable_pcie_error_reporting(pdev);

8635 8636
	/* Setup Runtime configurable options */
	if (is_qla8022(ha)) {
8637
		ha->isp_ops = &qla4_82xx_isp_ops;
8638
		ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
8639 8640 8641 8642 8643 8644 8645 8646 8647
		ha->qdr_sn_window = -1;
		ha->ddr_mn_window = -1;
		ha->curr_window = 255;
		nx_legacy_intr = &legacy_intr[ha->func_num];
		ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
		ha->nx_legacy_intr.tgt_status_reg =
			nx_legacy_intr->tgt_status_reg;
		ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
		ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
8648
	} else if (is_qla8032(ha) || is_qla8042(ha)) {
8649 8650
		ha->isp_ops = &qla4_83xx_isp_ops;
		ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
8651 8652 8653 8654
	} else {
		ha->isp_ops = &qla4xxx_isp_ops;
	}

8655 8656 8657 8658
	if (is_qla80XX(ha)) {
		rwlock_init(&ha->hw_lock);
		ha->pf_bit = ha->func_num << 16;
		/* Set EEH reset type to fundamental if required by hba */
8659
		pdev->needs_freset = 1;
8660
	}
8661

8662
	/* Configure PCI I/O space. */
8663
	ret = ha->isp_ops->iospace_config(ha);
8664
	if (ret)
8665
		goto probe_failed_ioconfig;
8666

8667
	ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
8668 8669 8670 8671 8672 8673 8674 8675
		   pdev->device, pdev->irq, ha->reg);

	qla4xxx_config_dma_addressing(ha);

	/* Initialize lists and spinlocks. */
	INIT_LIST_HEAD(&ha->free_srb_q);

	mutex_init(&ha->mbox_sem);
8676
	mutex_init(&ha->chap_sem);
8677
	init_completion(&ha->mbx_intr_comp);
8678
	init_completion(&ha->disable_acb_comp);
8679 8680
	init_completion(&ha->idc_comp);
	init_completion(&ha->link_up_comp);
8681 8682

	spin_lock_init(&ha->hardware_lock);
8683
	spin_lock_init(&ha->work_lock);
8684

8685 8686 8687
	/* Initialize work list */
	INIT_LIST_HEAD(&ha->work_list);

8688 8689
	/* Allocate dma buffers */
	if (qla4xxx_mem_alloc(ha)) {
8690 8691
		ql4_printk(KERN_WARNING, ha,
		    "[ERROR] Failed to allocate memory for adapter\n");
8692 8693 8694 8695 8696

		ret = -ENOMEM;
		goto probe_failed;
	}

8697 8698 8699 8700 8701 8702 8703 8704 8705 8706 8707 8708 8709 8710
	host->cmd_per_lun = 3;
	host->max_channel = 0;
	host->max_lun = MAX_LUNS - 1;
	host->max_id = MAX_TARGETS;
	host->max_cmd_len = IOCB_MAX_CDB_LEN;
	host->can_queue = MAX_SRBS ;
	host->transportt = qla4xxx_scsi_transport;

	pci_set_drvdata(pdev, ha);

	ret = scsi_add_host(host, &pdev->dev);
	if (ret)
		goto probe_failed;

8711 8712 8713
	if (is_qla80XX(ha))
		qla4_8xxx_get_flash_info(ha);

8714
	if (is_qla8032(ha) || is_qla8042(ha)) {
8715 8716 8717 8718 8719 8720 8721 8722 8723 8724
		qla4_83xx_read_reset_template(ha);
		/*
		 * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
		 * If DONRESET_BIT0 is set, drivers should not set dev_state
		 * to NEED_RESET. But if NEED_RESET is set, drivers should
		 * should honor the reset.
		 */
		if (ql4xdontresethba == 1)
			qla4_83xx_set_idc_dontreset(ha);
	}
8725

8726 8727 8728 8729 8730
	/*
	 * Initialize the Host adapter request/response queues and
	 * firmware
	 * NOTE: interrupts enabled upon successful completion
	 */
8731
	status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8732 8733

	/* Dont retry adapter initialization if IRQ allocation failed */
8734
	if (is_qla80XX(ha) && (status == QLA_ERROR))
8735 8736
		goto skip_retry_init;

8737 8738
	while ((!test_bit(AF_ONLINE, &ha->flags)) &&
	    init_retry_count++ < MAX_INIT_RETRIES) {
8739

8740
		if (is_qla80XX(ha)) {
8741 8742
			ha->isp_ops->idc_lock(ha);
			dev_state = qla4_8xxx_rd_direct(ha,
8743
							QLA8XXX_CRB_DEV_STATE);
8744
			ha->isp_ops->idc_unlock(ha);
8745
			if (dev_state == QLA8XXX_DEV_FAILED) {
8746 8747 8748 8749 8750 8751
				ql4_printk(KERN_WARNING, ha, "%s: don't retry "
				    "initialize adapter. H/W is in failed state\n",
				    __func__);
				break;
			}
		}
8752 8753
		DEBUG2(printk("scsi: %s: retrying adapter initialization "
			      "(%d)\n", __func__, init_retry_count));
8754 8755 8756 8757

		if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
			continue;

8758
		status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8759 8760 8761 8762
		if (is_qla80XX(ha) && (status == QLA_ERROR)) {
			if (qla4_8xxx_check_init_adapter_retry(ha) == QLA_ERROR)
				goto skip_retry_init;
		}
8763
	}
8764

8765
skip_retry_init:
8766
	if (!test_bit(AF_ONLINE, &ha->flags)) {
8767
		ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
8768

8769
		if ((is_qla8022(ha) && ql4xdontresethba) ||
8770 8771
		    ((is_qla8032(ha) || is_qla8042(ha)) &&
		     qla4_83xx_idc_dontreset(ha))) {
8772 8773
			/* Put the device in failed state. */
			DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
8774 8775 8776 8777
			ha->isp_ops->idc_lock(ha);
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
					    QLA8XXX_DEV_FAILED);
			ha->isp_ops->idc_unlock(ha);
8778
		}
8779
		ret = -ENODEV;
8780
		goto remove_host;
8781 8782 8783 8784 8785 8786 8787 8788
	}

	/* Startup the kernel thread for this host adapter. */
	DEBUG2(printk("scsi: %s: Starting kernel thread for "
		      "qla4xxx_dpc\n", __func__));
	sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
	ha->dpc_thread = create_singlethread_workqueue(buf);
	if (!ha->dpc_thread) {
8789
		ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
8790
		ret = -ENODEV;
8791
		goto remove_host;
8792
	}
D
David Howells 已提交
8793
	INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
8794

8795 8796
	ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
				      ha->host_no);
8797 8798 8799 8800 8801 8802
	if (!ha->task_wq) {
		ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
		ret = -ENODEV;
		goto remove_host;
	}

8803 8804
	/*
	 * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
8805 8806 8807 8808
	 * (which is called indirectly by qla4xxx_initialize_adapter),
	 * so that irqs will be registered after crbinit but before
	 * mbx_intr_enable.
	 */
8809
	if (is_qla40XX(ha)) {
8810 8811 8812 8813
		ret = qla4xxx_request_irqs(ha);
		if (ret) {
			ql4_printk(KERN_WARNING, ha, "Failed to reserve "
			    "interrupt %d already in use.\n", pdev->irq);
8814
			goto remove_host;
8815
		}
8816 8817
	}

8818
	pci_save_state(ha->pdev);
8819
	ha->isp_ops->enable_intrs(ha);
8820 8821

	/* Start timer thread. */
8822
	qla4xxx_start_timer(ha, 1);
8823 8824 8825

	set_bit(AF_INIT_DONE, &ha->flags);

8826 8827
	qla4_8xxx_alloc_sysfs_attr(ha);

8828 8829 8830 8831
	printk(KERN_INFO
	       " QLogic iSCSI HBA Driver version: %s\n"
	       "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
	       qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
8832 8833
	       ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
	       ha->fw_info.fw_patch, ha->fw_info.fw_build);
8834

8835 8836 8837 8838
	/* Set the driver version */
	if (is_qla80XX(ha))
		qla4_8xxx_set_param(ha, SET_DRVR_VERSION);

8839
	if (qla4xxx_setup_boot_info(ha))
8840 8841
		ql4_printk(KERN_ERR, ha,
			   "%s: No iSCSI boot target configured\n", __func__);
8842

8843 8844
	set_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags);
	/* Perform the build ddb list and login to each */
8845 8846
	qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
	iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
8847
	qla4xxx_wait_login_resp_boot_tgt(ha);
8848 8849 8850

	qla4xxx_create_chap_list(ha);

8851
	qla4xxx_create_ifaces(ha);
8852 8853
	return 0;

8854 8855 8856
remove_host:
	scsi_remove_host(ha->host);

8857 8858
probe_failed:
	qla4xxx_free_adapter(ha);
8859 8860

probe_failed_ioconfig:
8861
	pci_disable_pcie_error_reporting(pdev);
8862 8863 8864 8865 8866 8867 8868 8869
	scsi_host_put(ha->host);

probe_disable_device:
	pci_disable_device(pdev);

	return ret;
}

8870 8871 8872 8873 8874 8875 8876 8877 8878 8879 8880 8881 8882 8883 8884 8885 8886 8887 8888 8889 8890 8891 8892 8893 8894 8895 8896 8897 8898 8899 8900 8901 8902 8903 8904 8905 8906 8907
/**
 * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
 * @ha: pointer to adapter structure
 *
 * Mark the other ISP-4xxx port to indicate that the driver is being removed,
 * so that the other port will not re-initialize while in the process of
 * removing the ha due to driver unload or hba hotplug.
 **/
static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
{
	struct scsi_qla_host *other_ha = NULL;
	struct pci_dev *other_pdev = NULL;
	int fn = ISP4XXX_PCI_FN_2;

	/*iscsi function numbers for ISP4xxx is 1 and 3*/
	if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
		fn = ISP4XXX_PCI_FN_1;

	other_pdev =
		pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
		ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
		fn));

	/* Get other_ha if other_pdev is valid and state is enable*/
	if (other_pdev) {
		if (atomic_read(&other_pdev->enable_cnt)) {
			other_ha = pci_get_drvdata(other_pdev);
			if (other_ha) {
				set_bit(AF_HA_REMOVAL, &other_ha->flags);
				DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
				    "Prevent %s reinit\n", __func__,
				    dev_name(&other_ha->pdev->dev)));
			}
		}
		pci_dev_put(other_pdev);
	}
}

8908 8909 8910 8911 8912 8913 8914 8915 8916 8917 8918 8919 8920 8921 8922 8923 8924 8925 8926 8927 8928 8929 8930 8931 8932 8933 8934 8935 8936 8937 8938 8939 8940 8941 8942 8943 8944 8945 8946 8947 8948 8949 8950 8951 8952 8953 8954
static void qla4xxx_destroy_ddb(struct scsi_qla_host *ha,
		struct ddb_entry *ddb_entry)
{
	struct dev_db_entry *fw_ddb_entry = NULL;
	dma_addr_t fw_ddb_entry_dma;
	unsigned long wtime;
	uint32_t ddb_state;
	int options;
	int status;

	options = LOGOUT_OPTION_CLOSE_SESSION;
	if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
		ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
		goto clear_ddb;
	}

	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		ql4_printk(KERN_ERR, ha,
			   "%s: Unable to allocate dma buffer\n", __func__);
		goto clear_ddb;
	}

	wtime = jiffies + (HZ * LOGOUT_TOV);
	do {
		status = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
						 fw_ddb_entry, fw_ddb_entry_dma,
						 NULL, NULL, &ddb_state, NULL,
						 NULL, NULL);
		if (status == QLA_ERROR)
			goto free_ddb;

		if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
		    (ddb_state == DDB_DS_SESSION_FAILED))
			goto free_ddb;

		schedule_timeout_uninterruptible(HZ);
	} while ((time_after(wtime, jiffies)));

free_ddb:
	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
			  fw_ddb_entry, fw_ddb_entry_dma);
clear_ddb:
	qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
}

8955 8956 8957 8958 8959 8960 8961 8962 8963 8964 8965
static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
{
	struct ddb_entry *ddb_entry;
	int idx;

	for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {

		ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
		if ((ddb_entry != NULL) &&
		    (ddb_entry->ddb_type == FLASH_DDB)) {

8966
			qla4xxx_destroy_ddb(ha, ddb_entry);
8967 8968 8969 8970 8971 8972 8973 8974 8975 8976 8977 8978 8979
			/*
			 * we have decremented the reference count of the driver
			 * when we setup the session to have the driver unload
			 * to be seamless without actually destroying the
			 * session
			 **/
			try_module_get(qla4xxx_iscsi_transport.owner);
			iscsi_destroy_endpoint(ddb_entry->conn->ep);
			qla4xxx_free_ddb(ha, ddb_entry);
			iscsi_session_teardown(ddb_entry->sess);
		}
	}
}
8980
/**
8981
 * qla4xxx_remove_adapter - callback function to remove adapter.
8982 8983
 * @pci_dev: PCI device pointer
 **/
8984
static void qla4xxx_remove_adapter(struct pci_dev *pdev)
8985 8986 8987
{
	struct scsi_qla_host *ha;

8988 8989 8990 8991 8992 8993 8994
	/*
	 * If the PCI device is disabled then it means probe_adapter had
	 * failed and resources already cleaned up on probe_adapter exit.
	 */
	if (!pci_is_enabled(pdev))
		return;

8995 8996
	ha = pci_get_drvdata(pdev);

8997
	if (is_qla40XX(ha))
8998
		qla4xxx_prevent_other_port_reinit(ha);
8999

9000 9001 9002
	/* destroy iface from sysfs */
	qla4xxx_destroy_ifaces(ha);

9003
	if ((!ql4xdisablesysfsboot) && ha->boot_kset)
9004 9005
		iscsi_boot_destroy_kset(ha->boot_kset);

9006
	qla4xxx_destroy_fw_ddb_session(ha);
9007
	qla4_8xxx_free_sysfs_attr(ha);
9008

9009
	qla4xxx_sysfs_ddb_remove(ha);
9010 9011 9012 9013 9014 9015
	scsi_remove_host(ha->host);

	qla4xxx_free_adapter(ha);

	scsi_host_put(ha->host);

9016
	pci_disable_pcie_error_reporting(pdev);
9017
	pci_disable_device(pdev);
9018 9019 9020 9021 9022 9023 9024 9025 9026
}

/**
 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
 * @ha: HA context
 *
 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
 * supported addressing method.
 */
A
Adrian Bunk 已提交
9027
static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
9028 9029 9030 9031
{
	int retval;

	/* Update our PCI device dma_mask for full 64 bit mask */
9032 9033
	if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
		if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
9034 9035 9036 9037
			dev_dbg(&ha->pdev->dev,
				  "Failed to set 64 bit PCI consistent mask; "
				   "using 32 bit.\n");
			retval = pci_set_consistent_dma_mask(ha->pdev,
9038
							     DMA_BIT_MASK(32));
9039 9040
		}
	} else
9041
		retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
9042 9043 9044 9045
}

static int qla4xxx_slave_alloc(struct scsi_device *sdev)
{
9046 9047 9048
	struct iscsi_cls_session *cls_sess;
	struct iscsi_session *sess;
	struct ddb_entry *ddb;
9049
	int queue_depth = QL4_DEF_QDEPTH;
9050

9051 9052 9053 9054
	cls_sess = starget_to_session(sdev->sdev_target);
	sess = cls_sess->dd_data;
	ddb = sess->dd_data;

9055
	sdev->hostdata = ddb;
9056 9057 9058 9059

	if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
		queue_depth = ql4xmaxqdepth;

9060
	scsi_change_queue_depth(sdev, queue_depth);
9061 9062 9063 9064 9065 9066
	return 0;
}

/**
 * qla4xxx_del_from_active_array - returns an active srb
 * @ha: Pointer to host adapter structure.
9067
 * @index: index into the active_array
9068 9069 9070
 *
 * This routine removes and returns the srb at the specified index
 **/
9071 9072
struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
    uint32_t index)
9073 9074
{
	struct srb *srb = NULL;
9075
	struct scsi_cmnd *cmd = NULL;
9076

9077 9078
	cmd = scsi_host_find_tag(ha->host, index);
	if (!cmd)
9079 9080
		return srb;

9081 9082
	srb = (struct srb *)CMD_SP(cmd);
	if (!srb)
9083 9084 9085 9086 9087 9088
		return srb;

	/* update counters */
	if (srb->flags & SRB_DMA_VALID) {
		ha->iocb_cnt -= srb->iocb_cnt;
		if (srb->cmd)
9089 9090
			srb->cmd->host_scribble =
				(unsigned char *)(unsigned long) MAX_SRBS;
9091 9092 9093 9094 9095 9096
	}
	return srb;
}

/**
 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
9097
 * @ha: Pointer to host adapter structure.
9098 9099 9100 9101 9102 9103 9104 9105 9106 9107 9108
 * @cmd: Scsi Command to wait on.
 *
 * This routine waits for the command to be returned by the Firmware
 * for some max time.
 **/
static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
				      struct scsi_cmnd *cmd)
{
	int done = 0;
	struct srb *rp;
	uint32_t max_wait_time = EH_WAIT_CMD_TOV;
9109 9110 9111 9112 9113 9114 9115 9116 9117 9118 9119
	int ret = SUCCESS;

	/* Dont wait on command if PCI error is being handled
	 * by PCI AER driver
	 */
	if (unlikely(pci_channel_offline(ha->pdev)) ||
	    (test_bit(AF_EEH_BUSY, &ha->flags))) {
		ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
		    ha->host_no, __func__);
		return ret;
	}
9120 9121 9122

	do {
		/* Checking to see if its returned to OS */
9123
		rp = (struct srb *) CMD_SP(cmd);
9124 9125 9126 9127 9128 9129 9130 9131 9132 9133 9134 9135 9136 9137 9138 9139 9140 9141 9142
		if (rp == NULL) {
			done++;
			break;
		}

		msleep(2000);
	} while (max_wait_time--);

	return done;
}

/**
 * qla4xxx_wait_for_hba_online - waits for HBA to come online
 * @ha: Pointer to host adapter structure
 **/
static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
{
	unsigned long wait_online;

V
Vikas Chaudhary 已提交
9143
	wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
9144 9145 9146 9147 9148 9149 9150 9151 9152 9153 9154 9155
	while (time_before(jiffies, wait_online)) {

		if (adapter_up(ha))
			return QLA_SUCCESS;

		msleep(2000);
	}

	return QLA_ERROR;
}

/**
9156
 * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
9157
 * @ha: pointer to HBA
9158 9159 9160 9161 9162 9163
 * @t: target id
 * @l: lun id
 *
 * This function waits for all outstanding commands to a lun to complete. It
 * returns 0 if all pending commands are returned and 1 otherwise.
 **/
9164 9165 9166
static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
					struct scsi_target *stgt,
					struct scsi_device *sdev)
9167 9168 9169 9170 9171 9172
{
	int cnt;
	int status = 0;
	struct scsi_cmnd *cmd;

	/*
9173 9174
	 * Waiting for all commands for the designated target or dev
	 * in the active array
9175 9176 9177
	 */
	for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
		cmd = scsi_host_find_tag(ha->host, cnt);
9178 9179
		if (cmd && stgt == scsi_target(cmd->device) &&
		    (!sdev || sdev == cmd->device)) {
9180 9181 9182 9183 9184 9185 9186 9187 9188
			if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
				status++;
				break;
			}
		}
	}
	return status;
}

9189 9190 9191 9192 9193 9194 9195 9196 9197 9198 9199
/**
 * qla4xxx_eh_abort - callback for abort task.
 * @cmd: Pointer to Linux's SCSI command structure
 *
 * This routine is called by the Linux OS to abort the specified
 * command.
 **/
static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
{
	struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
	unsigned int id = cmd->device->id;
H
Hannes Reinecke 已提交
9200
	uint64_t lun = cmd->device->lun;
9201
	unsigned long flags;
9202 9203 9204
	struct srb *srb = NULL;
	int ret = SUCCESS;
	int wait = 0;
9205
	int rval;
9206

H
Hannes Reinecke 已提交
9207
	ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Abort command issued cmd=%p, cdb=0x%x\n",
9208
		   ha->host_no, id, lun, cmd, cmd->cmnd[0]);
9209

9210 9211 9212 9213 9214 9215
	rval = qla4xxx_isp_check_reg(ha);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
		return FAILED;
	}

9216
	spin_lock_irqsave(&ha->hardware_lock, flags);
9217
	srb = (struct srb *) CMD_SP(cmd);
9218 9219
	if (!srb) {
		spin_unlock_irqrestore(&ha->hardware_lock, flags);
H
Hannes Reinecke 已提交
9220
		ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Specified command has already completed.\n",
9221
			   ha->host_no, id, lun);
9222
		return SUCCESS;
9223
	}
9224
	kref_get(&srb->srb_ref);
9225
	spin_unlock_irqrestore(&ha->hardware_lock, flags);
9226 9227

	if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
H
Hannes Reinecke 已提交
9228
		DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx failed.\n",
9229 9230 9231
		    ha->host_no, id, lun));
		ret = FAILED;
	} else {
H
Hannes Reinecke 已提交
9232
		DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx success.\n",
9233 9234 9235 9236 9237 9238 9239 9240 9241
		    ha->host_no, id, lun));
		wait = 1;
	}

	kref_put(&srb->srb_ref, qla4xxx_srb_compl);

	/* Wait for command to complete */
	if (wait) {
		if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
H
Hannes Reinecke 已提交
9242
			DEBUG2(printk("scsi%ld:%d:%llu: Abort handler timed out\n",
9243 9244 9245 9246 9247
			    ha->host_no, id, lun));
			ret = FAILED;
		}
	}

9248
	ql4_printk(KERN_INFO, ha,
H
Hannes Reinecke 已提交
9249
	    "scsi%ld:%d:%llu: Abort command - %s\n",
L
Lucas De Marchi 已提交
9250
	    ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
9251 9252 9253 9254

	return ret;
}

9255 9256 9257 9258 9259 9260 9261 9262 9263 9264 9265 9266
/**
 * qla4xxx_eh_device_reset - callback for target reset.
 * @cmd: Pointer to Linux's SCSI command structure
 *
 * This routine is called by the Linux OS to reset all luns on the
 * specified target.
 **/
static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
{
	struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
	struct ddb_entry *ddb_entry = cmd->device->hostdata;
	int ret = FAILED, stat;
9267
	int rval;
9268

9269
	if (!ddb_entry)
9270 9271
		return ret;

9272 9273 9274 9275 9276
	ret = iscsi_block_scsi_eh(cmd);
	if (ret)
		return ret;
	ret = FAILED;

9277
	ql4_printk(KERN_INFO, ha,
H
Hannes Reinecke 已提交
9278
		   "scsi%ld:%d:%d:%llu: DEVICE RESET ISSUED.\n", ha->host_no,
9279 9280 9281 9282 9283
		   cmd->device->channel, cmd->device->id, cmd->device->lun);

	DEBUG2(printk(KERN_INFO
		      "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
		      "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
J
Jens Axboe 已提交
9284
		      cmd, jiffies, cmd->request->timeout / HZ,
9285 9286
		      ha->dpc_flags, cmd->result, cmd->allowed));

9287 9288 9289 9290 9291 9292
	rval = qla4xxx_isp_check_reg(ha);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
		return FAILED;
	}

9293 9294 9295
	/* FIXME: wait for hba to go online */
	stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
	if (stat != QLA_SUCCESS) {
9296
		ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
9297 9298 9299
		goto eh_dev_reset_done;
	}

9300 9301
	if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
					 cmd->device)) {
9302
		ql4_printk(KERN_INFO, ha,
9303 9304 9305
			   "DEVICE RESET FAILED - waiting for "
			   "commands.\n");
		goto eh_dev_reset_done;
9306 9307
	}

9308 9309 9310 9311 9312
	/* Send marker. */
	if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
		MM_LUN_RESET) != QLA_SUCCESS)
		goto eh_dev_reset_done;

9313
	ql4_printk(KERN_INFO, ha,
H
Hannes Reinecke 已提交
9314
		   "scsi(%ld:%d:%d:%llu): DEVICE RESET SUCCEEDED.\n",
9315 9316 9317 9318 9319 9320 9321 9322 9323 9324
		   ha->host_no, cmd->device->channel, cmd->device->id,
		   cmd->device->lun);

	ret = SUCCESS;

eh_dev_reset_done:

	return ret;
}

9325 9326 9327 9328 9329 9330 9331 9332 9333 9334
/**
 * qla4xxx_eh_target_reset - callback for target reset.
 * @cmd: Pointer to Linux's SCSI command structure
 *
 * This routine is called by the Linux OS to reset the target.
 **/
static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
{
	struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
	struct ddb_entry *ddb_entry = cmd->device->hostdata;
9335
	int stat, ret;
9336
	int rval;
9337 9338 9339 9340

	if (!ddb_entry)
		return FAILED;

9341 9342 9343 9344
	ret = iscsi_block_scsi_eh(cmd);
	if (ret)
		return ret;

9345 9346 9347 9348 9349 9350
	starget_printk(KERN_INFO, scsi_target(cmd->device),
		       "WARM TARGET RESET ISSUED.\n");

	DEBUG2(printk(KERN_INFO
		      "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
		      "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
J
Jens Axboe 已提交
9351
		      ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
9352 9353
		      ha->dpc_flags, cmd->result, cmd->allowed));

9354 9355 9356 9357 9358 9359
	rval = qla4xxx_isp_check_reg(ha);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
		return FAILED;
	}

9360 9361 9362 9363 9364 9365 9366 9367 9368 9369 9370 9371 9372 9373 9374
	stat = qla4xxx_reset_target(ha, ddb_entry);
	if (stat != QLA_SUCCESS) {
		starget_printk(KERN_INFO, scsi_target(cmd->device),
			       "WARM TARGET RESET FAILED.\n");
		return FAILED;
	}

	if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
					 NULL)) {
		starget_printk(KERN_INFO, scsi_target(cmd->device),
			       "WARM TARGET DEVICE RESET FAILED - "
			       "waiting for commands.\n");
		return FAILED;
	}

9375 9376 9377 9378 9379 9380 9381 9382 9383
	/* Send marker. */
	if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
		MM_TGT_WARM_RESET) != QLA_SUCCESS) {
		starget_printk(KERN_INFO, scsi_target(cmd->device),
			       "WARM TARGET DEVICE RESET FAILED - "
			       "marker iocb failed.\n");
		return FAILED;
	}

9384 9385 9386 9387 9388
	starget_printk(KERN_INFO, scsi_target(cmd->device),
		       "WARM TARGET RESET SUCCEEDED.\n");
	return SUCCESS;
}

9389 9390 9391 9392 9393 9394 9395 9396 9397 9398 9399 9400 9401 9402
/**
 * qla4xxx_is_eh_active - check if error handler is running
 * @shost: Pointer to SCSI Host struct
 *
 * This routine finds that if reset host is called in EH
 * scenario or from some application like sg_reset
 **/
static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
{
	if (shost->shost_state == SHOST_RECOVERY)
		return 1;
	return 0;
}

9403 9404 9405 9406 9407 9408 9409 9410 9411 9412 9413
/**
 * qla4xxx_eh_host_reset - kernel callback
 * @cmd: Pointer to Linux's SCSI command structure
 *
 * This routine is invoked by the Linux kernel to perform fatal error
 * recovery on the specified adapter.
 **/
static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
{
	int return_status = FAILED;
	struct scsi_qla_host *ha;
9414
	int rval;
9415

9416
	ha = to_qla_host(cmd->device->host);
9417

9418 9419 9420 9421 9422 9423
	rval = qla4xxx_isp_check_reg(ha);
	if (rval != QLA_SUCCESS) {
		ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
		return FAILED;
	}

9424
	if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
9425 9426 9427
		qla4_83xx_set_idc_dontreset(ha);

	/*
9428 9429
	 * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
	 * protocol drivers, we should not set device_state to NEED_RESET
9430 9431
	 */
	if (ql4xdontresethba ||
9432 9433
	    ((is_qla8032(ha) || is_qla8042(ha)) &&
	     qla4_83xx_idc_dontreset(ha))) {
9434 9435
		DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
		     ha->host_no, __func__));
9436 9437 9438 9439 9440

		/* Clear outstanding srb in queues */
		if (qla4xxx_is_eh_active(cmd->device->host))
			qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);

9441 9442 9443
		return FAILED;
	}

9444
	ql4_printk(KERN_INFO, ha,
H
Hannes Reinecke 已提交
9445
		   "scsi(%ld:%d:%d:%llu): HOST RESET ISSUED.\n", ha->host_no,
9446 9447 9448 9449 9450 9451 9452 9453 9454 9455
		   cmd->device->channel, cmd->device->id, cmd->device->lun);

	if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
		DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
			      "DEAD.\n", ha->host_no, cmd->device->channel,
			      __func__));

		return FAILED;
	}

9456
	if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9457
		if (is_qla80XX(ha))
9458 9459 9460 9461
			set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
		else
			set_bit(DPC_RESET_HA, &ha->dpc_flags);
	}
9462

9463
	if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
9464 9465
		return_status = SUCCESS;

9466
	ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
L
Lucas De Marchi 已提交
9467
		   return_status == FAILED ? "FAILED" : "SUCCEEDED");
9468 9469 9470 9471

	return return_status;
}

9472 9473 9474 9475 9476 9477 9478 9479 9480 9481 9482 9483 9484 9485 9486 9487 9488 9489 9490 9491 9492 9493 9494 9495 9496 9497 9498 9499 9500 9501 9502 9503 9504 9505 9506 9507 9508 9509 9510 9511 9512 9513 9514 9515 9516 9517 9518 9519 9520 9521 9522 9523 9524 9525 9526
static int qla4xxx_context_reset(struct scsi_qla_host *ha)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];
	struct addr_ctrl_blk_def *acb = NULL;
	uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
	int rval = QLA_SUCCESS;
	dma_addr_t acb_dma;

	acb = dma_alloc_coherent(&ha->pdev->dev,
				 sizeof(struct addr_ctrl_blk_def),
				 &acb_dma, GFP_KERNEL);
	if (!acb) {
		ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
			   __func__);
		rval = -ENOMEM;
		goto exit_port_reset;
	}

	memset(acb, 0, acb_len);

	rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
	if (rval != QLA_SUCCESS) {
		rval = -EIO;
		goto exit_free_acb;
	}

	rval = qla4xxx_disable_acb(ha);
	if (rval != QLA_SUCCESS) {
		rval = -EIO;
		goto exit_free_acb;
	}

	wait_for_completion_timeout(&ha->disable_acb_comp,
				    DISABLE_ACB_TOV * HZ);

	rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
	if (rval != QLA_SUCCESS) {
		rval = -EIO;
		goto exit_free_acb;
	}

exit_free_acb:
	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
			  acb, acb_dma);
exit_port_reset:
	DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
			  rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
	return rval;
}

static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
{
	struct scsi_qla_host *ha = to_qla_host(shost);
	int rval = QLA_SUCCESS;
9527
	uint32_t idc_ctrl;
9528 9529 9530 9531 9532 9533 9534 9535 9536 9537 9538 9539 9540 9541 9542 9543 9544

	if (ql4xdontresethba) {
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
				  __func__));
		rval = -EPERM;
		goto exit_host_reset;
	}

	if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
		goto recover_adapter;

	switch (reset_type) {
	case SCSI_ADAPTER_RESET:
		set_bit(DPC_RESET_HA, &ha->dpc_flags);
		break;
	case SCSI_FIRMWARE_RESET:
		if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9545
			if (is_qla80XX(ha))
9546 9547 9548 9549 9550 9551 9552 9553 9554 9555 9556 9557
				/* set firmware context reset */
				set_bit(DPC_RESET_HA_FW_CONTEXT,
					&ha->dpc_flags);
			else {
				rval = qla4xxx_context_reset(ha);
				goto exit_host_reset;
			}
		}
		break;
	}

recover_adapter:
9558
	/* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
9559
	 * reset is issued by application */
9560 9561
	if ((is_qla8032(ha) || is_qla8042(ha)) &&
	    test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9562 9563 9564 9565 9566
		idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
		qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
				 (idc_ctrl | GRACEFUL_RESET_BIT1));
	}

9567 9568 9569 9570 9571 9572 9573 9574 9575 9576 9577
	rval = qla4xxx_recover_adapter(ha);
	if (rval != QLA_SUCCESS) {
		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
				  __func__));
		rval = -EIO;
	}

exit_host_reset:
	return rval;
}

9578 9579 9580 9581 9582
/* PCI AER driver recovers from all correctable errors w/o
 * driver intervention. For uncorrectable errors PCI AER
 * driver calls the following device driver's callbacks
 *
 * - Fatal Errors - link_reset
C
Cao jin 已提交
9583
 * - Non-Fatal Errors - driver's error_detected() which
9584 9585 9586
 * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
 *
 * PCI AER driver calls
C
Cao jin 已提交
9587
 * CAN_RECOVER - driver's mmio_enabled(), mmio_enabled()
9588 9589 9590
 *               returns RECOVERED or NEED_RESET if fw_hung
 * NEED_RESET - driver's slot_reset()
 * DISCONNECT - device is dead & cannot recover
C
Cao jin 已提交
9591
 * RECOVERED - driver's resume()
9592 9593 9594 9595 9596 9597 9598 9599 9600 9601 9602 9603 9604 9605 9606 9607 9608 9609 9610 9611 9612
 */
static pci_ers_result_t
qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
{
	struct scsi_qla_host *ha = pci_get_drvdata(pdev);

	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
	    ha->host_no, __func__, state);

	if (!is_aer_supported(ha))
		return PCI_ERS_RESULT_NONE;

	switch (state) {
	case pci_channel_io_normal:
		clear_bit(AF_EEH_BUSY, &ha->flags);
		return PCI_ERS_RESULT_CAN_RECOVER;
	case pci_channel_io_frozen:
		set_bit(AF_EEH_BUSY, &ha->flags);
		qla4xxx_mailbox_premature_completion(ha);
		qla4xxx_free_irqs(ha);
		pci_disable_device(pdev);
9613 9614
		/* Return back all IOs */
		qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
9615 9616 9617 9618 9619 9620 9621 9622 9623 9624 9625 9626 9627 9628 9629 9630 9631 9632 9633 9634 9635 9636 9637
		return PCI_ERS_RESULT_NEED_RESET;
	case pci_channel_io_perm_failure:
		set_bit(AF_EEH_BUSY, &ha->flags);
		set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
		qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
		return PCI_ERS_RESULT_DISCONNECT;
	}
	return PCI_ERS_RESULT_NEED_RESET;
}

/**
 * qla4xxx_pci_mmio_enabled() gets called if
 * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
 * and read/write to the device still works.
 **/
static pci_ers_result_t
qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
{
	struct scsi_qla_host *ha = pci_get_drvdata(pdev);

	if (!is_aer_supported(ha))
		return PCI_ERS_RESULT_NONE;

9638
	return PCI_ERS_RESULT_RECOVERED;
9639 9640
}

9641
static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
9642 9643 9644 9645 9646 9647 9648 9649 9650 9651 9652
{
	uint32_t rval = QLA_ERROR;
	int fn;
	struct pci_dev *other_pdev = NULL;

	ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);

	set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);

	if (test_bit(AF_ONLINE, &ha->flags)) {
		clear_bit(AF_ONLINE, &ha->flags);
9653 9654
		clear_bit(AF_LINK_UP, &ha->flags);
		iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
9655 9656 9657 9658
		qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
	}

	fn = PCI_FUNC(ha->pdev->devfn);
9659 9660 9661 9662 9663 9664 9665 9666 9667 9668 9669 9670 9671 9672 9673
	if (is_qla8022(ha)) {
		while (fn > 0) {
			fn--;
			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at func %x\n",
				   ha->host_no, __func__, fn);
			/* Get the pci device given the domain, bus,
			 * slot/function number */
			other_pdev = pci_get_domain_bus_and_slot(
					   pci_domain_nr(ha->pdev->bus),
					   ha->pdev->bus->number,
					   PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
					   fn));

			if (!other_pdev)
				continue;
9674

9675 9676 9677 9678 9679 9680
			if (atomic_read(&other_pdev->enable_cnt)) {
				ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI func in enabled state%x\n",
					   ha->host_no, __func__, fn);
				pci_dev_put(other_pdev);
				break;
			}
9681 9682
			pci_dev_put(other_pdev);
		}
9683 9684 9685 9686 9687 9688
	} else {
		/* this case is meant for ISP83xx/ISP84xx only */
		if (qla4_83xx_can_perform_reset(ha)) {
			/* reset fn as iSCSI is going to perform the reset */
			fn = 0;
		}
9689 9690 9691 9692 9693 9694 9695 9696 9697 9698 9699
	}

	/* The first function on the card, the reset owner will
	 * start & initialize the firmware. The other functions
	 * on the card will reset the firmware context
	 */
	if (!fn) {
		ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
		    "0x%x is the owner\n", ha->host_no, __func__,
		    ha->pdev->devfn);

9700 9701 9702 9703
		ha->isp_ops->idc_lock(ha);
		qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
				    QLA8XXX_DEV_COLD);
		ha->isp_ops->idc_unlock(ha);
9704 9705 9706 9707 9708 9709 9710 9711 9712 9713 9714

		rval = qla4_8xxx_update_idc_reg(ha);
		if (rval == QLA_ERROR) {
			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
				   ha->host_no, __func__);
			ha->isp_ops->idc_lock(ha);
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
					    QLA8XXX_DEV_FAILED);
			ha->isp_ops->idc_unlock(ha);
			goto exit_error_recovery;
		}
9715 9716

		clear_bit(AF_FW_RECOVERY, &ha->flags);
9717
		rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9718 9719 9720 9721

		if (rval != QLA_SUCCESS) {
			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
			    "FAILED\n", ha->host_no, __func__);
9722
			qla4xxx_free_irqs(ha);
9723
			ha->isp_ops->idc_lock(ha);
9724
			qla4_8xxx_clear_drv_active(ha);
9725 9726
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
					    QLA8XXX_DEV_FAILED);
9727
			ha->isp_ops->idc_unlock(ha);
9728 9729 9730
		} else {
			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
			    "READY\n", ha->host_no, __func__);
9731
			ha->isp_ops->idc_lock(ha);
9732 9733
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
					    QLA8XXX_DEV_READY);
9734
			/* Clear driver state register */
9735
			qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
9736
			qla4_8xxx_set_drv_active(ha);
9737
			ha->isp_ops->idc_unlock(ha);
9738
			ha->isp_ops->enable_intrs(ha);
9739 9740 9741 9742 9743
		}
	} else {
		ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
		    "the reset owner\n", ha->host_no, __func__,
		    ha->pdev->devfn);
9744 9745
		if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
		     QLA8XXX_DEV_READY)) {
9746
			clear_bit(AF_FW_RECOVERY, &ha->flags);
9747
			rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9748 9749
			if (rval == QLA_SUCCESS)
				ha->isp_ops->enable_intrs(ha);
9750 9751
			else
				qla4xxx_free_irqs(ha);
9752

9753
			ha->isp_ops->idc_lock(ha);
9754
			qla4_8xxx_set_drv_active(ha);
9755
			ha->isp_ops->idc_unlock(ha);
9756 9757
		}
	}
9758
exit_error_recovery:
9759 9760 9761 9762 9763 9764 9765 9766 9767 9768 9769 9770 9771 9772 9773 9774 9775 9776 9777 9778 9779 9780 9781 9782 9783 9784 9785 9786 9787 9788 9789
	clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
	return rval;
}

static pci_ers_result_t
qla4xxx_pci_slot_reset(struct pci_dev *pdev)
{
	pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
	struct scsi_qla_host *ha = pci_get_drvdata(pdev);
	int rc;

	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
	    ha->host_no, __func__);

	if (!is_aer_supported(ha))
		return PCI_ERS_RESULT_NONE;

	/* Restore the saved state of PCIe device -
	 * BAR registers, PCI Config space, PCIX, MSI,
	 * IOV states
	 */
	pci_restore_state(pdev);

	/* pci_restore_state() clears the saved_state flag of the device
	 * save restored state which resets saved_state flag
	 */
	pci_save_state(pdev);

	/* Initialize device or resume if in suspended state */
	rc = pci_enable_device(pdev);
	if (rc) {
L
Lucas De Marchi 已提交
9790
		ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
9791 9792 9793 9794
		    "device after reset\n", ha->host_no, __func__);
		goto exit_slot_reset;
	}

9795
	ha->isp_ops->disable_intrs(ha);
9796

9797
	if (is_qla80XX(ha)) {
9798 9799 9800 9801 9802 9803 9804 9805 9806 9807 9808 9809 9810 9811 9812 9813 9814 9815 9816 9817 9818 9819 9820 9821 9822 9823 9824 9825 9826 9827 9828 9829 9830
		if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
			ret = PCI_ERS_RESULT_RECOVERED;
			goto exit_slot_reset;
		} else
			goto exit_slot_reset;
	}

exit_slot_reset:
	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
	    "device after reset\n", ha->host_no, __func__, ret);
	return ret;
}

static void
qla4xxx_pci_resume(struct pci_dev *pdev)
{
	struct scsi_qla_host *ha = pci_get_drvdata(pdev);
	int ret;

	ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
	    ha->host_no, __func__);

	ret = qla4xxx_wait_for_hba_online(ha);
	if (ret != QLA_SUCCESS) {
		ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
		    "resume I/O from slot/link_reset\n", ha->host_no,
		     __func__);
	}

	pci_cleanup_aer_uncorrect_error_status(pdev);
	clear_bit(AF_EEH_BUSY, &ha->flags);
}

9831
static const struct pci_error_handlers qla4xxx_err_handler = {
9832 9833 9834 9835 9836 9837
	.error_detected = qla4xxx_pci_error_detected,
	.mmio_enabled = qla4xxx_pci_mmio_enabled,
	.slot_reset = qla4xxx_pci_slot_reset,
	.resume = qla4xxx_pci_resume,
};

9838 9839 9840 9841 9842 9843 9844 9845 9846 9847 9848 9849 9850
static struct pci_device_id qla4xxx_pci_tbl[] = {
	{
		.vendor		= PCI_VENDOR_ID_QLOGIC,
		.device		= PCI_DEVICE_ID_QLOGIC_ISP4010,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
	},
	{
		.vendor		= PCI_VENDOR_ID_QLOGIC,
		.device		= PCI_DEVICE_ID_QLOGIC_ISP4022,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
	},
9851 9852 9853 9854 9855 9856
	{
		.vendor		= PCI_VENDOR_ID_QLOGIC,
		.device		= PCI_DEVICE_ID_QLOGIC_ISP4032,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
	},
9857 9858 9859 9860 9861 9862
	{
		.vendor         = PCI_VENDOR_ID_QLOGIC,
		.device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
		.subvendor      = PCI_ANY_ID,
		.subdevice      = PCI_ANY_ID,
	},
9863 9864 9865 9866 9867 9868
	{
		.vendor		= PCI_VENDOR_ID_QLOGIC,
		.device		= PCI_DEVICE_ID_QLOGIC_ISP8324,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
	},
9869 9870 9871 9872 9873 9874
	{
		.vendor		= PCI_VENDOR_ID_QLOGIC,
		.device		= PCI_DEVICE_ID_QLOGIC_ISP8042,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= PCI_ANY_ID,
	},
9875 9876 9877 9878
	{0, 0},
};
MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);

A
Adrian Bunk 已提交
9879
static struct pci_driver qla4xxx_pci_driver = {
9880 9881 9882 9883
	.name		= DRIVER_NAME,
	.id_table	= qla4xxx_pci_tbl,
	.probe		= qla4xxx_probe_adapter,
	.remove		= qla4xxx_remove_adapter,
9884
	.err_handler = &qla4xxx_err_handler,
9885 9886 9887 9888 9889 9890
};

static int __init qla4xxx_module_init(void)
{
	int ret;

9891 9892 9893
	if (ql4xqfulltracking)
		qla4xxx_driver_template.track_queue_depth = 1;

9894 9895
	/* Allocate cache for SRBs. */
	srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
9896
				       SLAB_HWCACHE_ALIGN, NULL);
9897 9898 9899 9900 9901 9902 9903 9904 9905 9906
	if (srb_cachep == NULL) {
		printk(KERN_ERR
		       "%s: Unable to allocate SRB cache..."
		       "Failing load!\n", DRIVER_NAME);
		ret = -ENOMEM;
		goto no_srp_cache;
	}

	/* Derive version string. */
	strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
9907
	if (ql4xextended_error_logging)
9908 9909 9910 9911 9912 9913 9914 9915 9916 9917 9918 9919 9920 9921 9922
		strcat(qla4xxx_version_str, "-debug");

	qla4xxx_scsi_transport =
		iscsi_register_transport(&qla4xxx_iscsi_transport);
	if (!qla4xxx_scsi_transport){
		ret = -ENODEV;
		goto release_srb_cache;
	}

	ret = pci_register_driver(&qla4xxx_pci_driver);
	if (ret)
		goto unregister_transport;

	printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
	return 0;
9923

9924 9925 9926 9927 9928 9929 9930 9931 9932 9933 9934 9935 9936 9937 9938 9939 9940 9941 9942 9943 9944 9945
unregister_transport:
	iscsi_unregister_transport(&qla4xxx_iscsi_transport);
release_srb_cache:
	kmem_cache_destroy(srb_cachep);
no_srp_cache:
	return ret;
}

static void __exit qla4xxx_module_exit(void)
{
	pci_unregister_driver(&qla4xxx_pci_driver);
	iscsi_unregister_transport(&qla4xxx_iscsi_transport);
	kmem_cache_destroy(srb_cachep);
}

module_init(qla4xxx_module_init);
module_exit(qla4xxx_module_exit);

MODULE_AUTHOR("QLogic Corporation");
MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(QLA4XXX_DRIVER_VERSION);