cnic.c 147.4 KB
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/* cnic.c: Broadcom CNIC core network driver.
 *
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 * Copyright (c) 2006-2012 Broadcom Corporation
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 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation.
 *
 * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
 * Modified and maintained by: Michael Chan <mchan@broadcom.com>
 */

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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

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#include <linux/module.h>

#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/uio_driver.h>
#include <linux/in.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>
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#include <linux/prefetch.h>
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#include <linux/random.h>
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#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
#define BCM_VLAN 1
#endif
#include <net/ip.h>
#include <net/tcp.h>
#include <net/route.h>
#include <net/ipv6.h>
#include <net/ip6_route.h>
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#include <net/ip6_checksum.h>
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#include <scsi/iscsi_if.h>

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#define BCM_CNIC	1
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#include "cnic_if.h"
#include "bnx2.h"
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#include "bnx2x/bnx2x.h"
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#include "bnx2x/bnx2x_reg.h"
#include "bnx2x/bnx2x_fw_defs.h"
#include "bnx2x/bnx2x_hsi.h"
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#include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
#include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
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#include "../../../scsi/bnx2fc/bnx2fc_constants.h"
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#include "cnic.h"
#include "cnic_defs.h"

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#define CNIC_MODULE_NAME	"cnic"
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static char version[] =
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	"Broadcom NetXtreme II CNIC Driver " CNIC_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
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MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
	      "Chen (zongxi@broadcom.com");
MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(CNIC_MODULE_VERSION);

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/* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
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static LIST_HEAD(cnic_dev_list);
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static LIST_HEAD(cnic_udev_list);
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static DEFINE_RWLOCK(cnic_dev_lock);
static DEFINE_MUTEX(cnic_lock);

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static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];

/* helper function, assuming cnic_lock is held */
static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type)
{
	return rcu_dereference_protected(cnic_ulp_tbl[type],
					 lockdep_is_held(&cnic_lock));
}
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static int cnic_service_bnx2(void *, void *);
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static int cnic_service_bnx2x(void *, void *);
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static int cnic_ctl(void *, struct cnic_ctl_info *);

static struct cnic_ops cnic_bnx2_ops = {
	.cnic_owner	= THIS_MODULE,
	.cnic_handler	= cnic_service_bnx2,
	.cnic_ctl	= cnic_ctl,
};

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static struct cnic_ops cnic_bnx2x_ops = {
	.cnic_owner	= THIS_MODULE,
	.cnic_handler	= cnic_service_bnx2x,
	.cnic_ctl	= cnic_ctl,
};

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static struct workqueue_struct *cnic_wq;

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static void cnic_shutdown_rings(struct cnic_dev *);
static void cnic_init_rings(struct cnic_dev *);
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static int cnic_cm_set_pg(struct cnic_sock *);

static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
{
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	struct cnic_uio_dev *udev = uinfo->priv;
	struct cnic_dev *dev;
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	if (!capable(CAP_NET_ADMIN))
		return -EPERM;

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	if (udev->uio_dev != -1)
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		return -EBUSY;

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	rtnl_lock();
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	dev = udev->dev;

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	if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
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		rtnl_unlock();
		return -ENODEV;
	}

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	udev->uio_dev = iminor(inode);
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	cnic_shutdown_rings(dev);
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	cnic_init_rings(dev);
	rtnl_unlock();
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	return 0;
}

static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
{
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	struct cnic_uio_dev *udev = uinfo->priv;
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	udev->uio_dev = -1;
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	return 0;
}

static inline void cnic_hold(struct cnic_dev *dev)
{
	atomic_inc(&dev->ref_count);
}

static inline void cnic_put(struct cnic_dev *dev)
{
	atomic_dec(&dev->ref_count);
}

static inline void csk_hold(struct cnic_sock *csk)
{
	atomic_inc(&csk->ref_count);
}

static inline void csk_put(struct cnic_sock *csk)
{
	atomic_dec(&csk->ref_count);
}

static struct cnic_dev *cnic_from_netdev(struct net_device *netdev)
{
	struct cnic_dev *cdev;

	read_lock(&cnic_dev_lock);
	list_for_each_entry(cdev, &cnic_dev_list, list) {
		if (netdev == cdev->netdev) {
			cnic_hold(cdev);
			read_unlock(&cnic_dev_lock);
			return cdev;
		}
	}
	read_unlock(&cnic_dev_lock);
	return NULL;
}

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static inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
{
	atomic_inc(&ulp_ops->ref_count);
}

static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
{
	atomic_dec(&ulp_ops->ref_count);
}

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static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
	struct drv_ctl_io *io = &info.data.io;

	info.cmd = DRV_CTL_CTX_WR_CMD;
	io->cid_addr = cid_addr;
	io->offset = off;
	io->data = val;
	ethdev->drv_ctl(dev->netdev, &info);
}

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static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
	struct drv_ctl_io *io = &info.data.io;

	info.cmd = DRV_CTL_CTXTBL_WR_CMD;
	io->offset = off;
	io->dma_addr = addr;
	ethdev->drv_ctl(dev->netdev, &info);
}

static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
	struct drv_ctl_l2_ring *ring = &info.data.ring;

	if (start)
		info.cmd = DRV_CTL_START_L2_CMD;
	else
		info.cmd = DRV_CTL_STOP_L2_CMD;

	ring->cid = cid;
	ring->client_id = cl_id;
	ethdev->drv_ctl(dev->netdev, &info);
}

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static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
	struct drv_ctl_io *io = &info.data.io;

	info.cmd = DRV_CTL_IO_WR_CMD;
	io->offset = off;
	io->data = val;
	ethdev->drv_ctl(dev->netdev, &info);
}

static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
	struct drv_ctl_io *io = &info.data.io;

	info.cmd = DRV_CTL_IO_RD_CMD;
	io->offset = off;
	ethdev->drv_ctl(dev->netdev, &info);
	return io->data;
}

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static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;
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	struct fcoe_capabilities *fcoe_cap =
		&info.data.register_data.fcoe_features;
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	if (reg) {
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		info.cmd = DRV_CTL_ULP_REGISTER_CMD;
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		if (ulp_type == CNIC_ULP_FCOE && dev->fcoe_cap)
			memcpy(fcoe_cap, dev->fcoe_cap, sizeof(*fcoe_cap));
	} else {
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		info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
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	}
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	info.data.ulp_type = ulp_type;
	ethdev->drv_ctl(dev->netdev, &info);
}

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static int cnic_in_use(struct cnic_sock *csk)
{
	return test_bit(SK_F_INUSE, &csk->flags);
}

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static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
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{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;

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	info.cmd = cmd;
	info.data.credit.credit_count = count;
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	ethdev->drv_ctl(dev->netdev, &info);
}

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static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
{
	u32 i;

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	if (!cp->ctx_tbl)
		return -EINVAL;

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	for (i = 0; i < cp->max_cid_space; i++) {
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		if (cp->ctx_tbl[i].cid == cid) {
			*l5_cid = i;
			return 0;
		}
	}
	return -EINVAL;
}

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static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
			   struct cnic_sock *csk)
{
	struct iscsi_path path_req;
	char *buf = NULL;
	u16 len = 0;
	u32 msg_type = ISCSI_KEVENT_IF_DOWN;
	struct cnic_ulp_ops *ulp_ops;
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	struct cnic_uio_dev *udev = cp->udev;
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	int rc = 0, retry = 0;
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	if (!udev || udev->uio_dev == -1)
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		return -ENODEV;

	if (csk) {
		len = sizeof(path_req);
		buf = (char *) &path_req;
		memset(&path_req, 0, len);

		msg_type = ISCSI_KEVENT_PATH_REQ;
		path_req.handle = (u64) csk->l5_cid;
		if (test_bit(SK_F_IPV6, &csk->flags)) {
			memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0],
			       sizeof(struct in6_addr));
			path_req.ip_addr_len = 16;
		} else {
			memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0],
			       sizeof(struct in_addr));
			path_req.ip_addr_len = 4;
		}
		path_req.vlan_id = csk->vlan_id;
		path_req.pmtu = csk->mtu;
	}

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	while (retry < 3) {
		rc = 0;
		rcu_read_lock();
		ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
		if (ulp_ops)
			rc = ulp_ops->iscsi_nl_send_msg(
				cp->ulp_handle[CNIC_ULP_ISCSI],
				msg_type, buf, len);
		rcu_read_unlock();
		if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
			break;

		msleep(100);
		retry++;
	}
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	return rc;
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}

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static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);

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static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
				  char *buf, u16 len)
{
	int rc = -EINVAL;

	switch (msg_type) {
	case ISCSI_UEVENT_PATH_UPDATE: {
		struct cnic_local *cp;
		u32 l5_cid;
		struct cnic_sock *csk;
		struct iscsi_path *path_resp;

		if (len < sizeof(*path_resp))
			break;

		path_resp = (struct iscsi_path *) buf;
		cp = dev->cnic_priv;
		l5_cid = (u32) path_resp->handle;
		if (l5_cid >= MAX_CM_SK_TBL_SZ)
			break;

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		rcu_read_lock();
		if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
			rc = -ENODEV;
			rcu_read_unlock();
			break;
		}
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		csk = &cp->csk_tbl[l5_cid];
		csk_hold(csk);
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		if (cnic_in_use(csk) &&
		    test_bit(SK_F_CONNECT_START, &csk->flags)) {

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			csk->vlan_id = path_resp->vlan_id;

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			memcpy(csk->ha, path_resp->mac_addr, 6);
			if (test_bit(SK_F_IPV6, &csk->flags))
				memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
				       sizeof(struct in6_addr));
			else
				memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
				       sizeof(struct in_addr));
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			if (is_valid_ether_addr(csk->ha)) {
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				cnic_cm_set_pg(csk);
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			} else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) &&
				!test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {

				cnic_cm_upcall(cp, csk,
					L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
				clear_bit(SK_F_CONNECT_START, &csk->flags);
			}
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		}
		csk_put(csk);
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		rcu_read_unlock();
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		rc = 0;
	}
	}

	return rc;
}

static int cnic_offld_prep(struct cnic_sock *csk)
{
	if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
		return 0;

	if (!test_bit(SK_F_CONNECT_START, &csk->flags)) {
		clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
		return 0;
	}

	return 1;
}

static int cnic_close_prep(struct cnic_sock *csk)
{
	clear_bit(SK_F_CONNECT_START, &csk->flags);
	smp_mb__after_clear_bit();

	if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
		while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
			msleep(1);

		return 1;
	}
	return 0;
}

static int cnic_abort_prep(struct cnic_sock *csk)
{
	clear_bit(SK_F_CONNECT_START, &csk->flags);
	smp_mb__after_clear_bit();

	while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags))
		msleep(1);

	if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
		csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
		return 1;
	}

	return 0;
}

int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
{
	struct cnic_dev *dev;

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	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
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		pr_err("%s: Bad type %d\n", __func__, ulp_type);
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		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
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	if (cnic_ulp_tbl_prot(ulp_type)) {
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		pr_err("%s: Type %d has already been registered\n",
		       __func__, ulp_type);
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		mutex_unlock(&cnic_lock);
		return -EBUSY;
	}

	read_lock(&cnic_dev_lock);
	list_for_each_entry(dev, &cnic_dev_list, list) {
		struct cnic_local *cp = dev->cnic_priv;

		clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]);
	}
	read_unlock(&cnic_dev_lock);

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	atomic_set(&ulp_ops->ref_count, 0);
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	rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
	mutex_unlock(&cnic_lock);

	/* Prevent race conditions with netdev_event */
	rtnl_lock();
	list_for_each_entry(dev, &cnic_dev_list, list) {
		struct cnic_local *cp = dev->cnic_priv;

		if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
			ulp_ops->cnic_init(dev);
	}
	rtnl_unlock();

	return 0;
}

int cnic_unregister_driver(int ulp_type)
{
	struct cnic_dev *dev;
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	struct cnic_ulp_ops *ulp_ops;
	int i = 0;
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	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
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		pr_err("%s: Bad type %d\n", __func__, ulp_type);
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		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
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	ulp_ops = cnic_ulp_tbl_prot(ulp_type);
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	if (!ulp_ops) {
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		pr_err("%s: Type %d has not been registered\n",
		       __func__, ulp_type);
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		goto out_unlock;
	}
	read_lock(&cnic_dev_lock);
	list_for_each_entry(dev, &cnic_dev_list, list) {
		struct cnic_local *cp = dev->cnic_priv;

		if (rcu_dereference(cp->ulp_ops[ulp_type])) {
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			pr_err("%s: Type %d still has devices registered\n",
			       __func__, ulp_type);
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			read_unlock(&cnic_dev_lock);
			goto out_unlock;
		}
	}
	read_unlock(&cnic_dev_lock);

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	RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
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	mutex_unlock(&cnic_lock);
	synchronize_rcu();
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	while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
		msleep(100);
		i++;
	}

	if (atomic_read(&ulp_ops->ref_count) != 0)
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		pr_warn("%s: Failed waiting for ref count to go to zero\n",
			__func__);
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	return 0;

out_unlock:
	mutex_unlock(&cnic_lock);
	return -EINVAL;
}

static int cnic_start_hw(struct cnic_dev *);
static void cnic_stop_hw(struct cnic_dev *);

static int cnic_register_device(struct cnic_dev *dev, int ulp_type,
				void *ulp_ctx)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_ulp_ops *ulp_ops;

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	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
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		pr_err("%s: Bad type %d\n", __func__, ulp_type);
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		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
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	if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
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		pr_err("%s: Driver with type %d has not been registered\n",
		       __func__, ulp_type);
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		mutex_unlock(&cnic_lock);
		return -EAGAIN;
	}
	if (rcu_dereference(cp->ulp_ops[ulp_type])) {
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		pr_err("%s: Type %d has already been registered to this device\n",
		       __func__, ulp_type);
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		mutex_unlock(&cnic_lock);
		return -EBUSY;
	}

	clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
	cp->ulp_handle[ulp_type] = ulp_ctx;
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	ulp_ops = cnic_ulp_tbl_prot(ulp_type);
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	rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
	cnic_hold(dev);

	if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
		if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
			ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);

	mutex_unlock(&cnic_lock);

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	cnic_ulp_ctl(dev, ulp_type, true);

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	return 0;

}
EXPORT_SYMBOL(cnic_register_driver);

static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
{
	struct cnic_local *cp = dev->cnic_priv;
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	int i = 0;
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	if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
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		pr_err("%s: Bad type %d\n", __func__, ulp_type);
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		return -EINVAL;
	}
	mutex_lock(&cnic_lock);
	if (rcu_dereference(cp->ulp_ops[ulp_type])) {
613
		RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
614 615
		cnic_put(dev);
	} else {
616 617
		pr_err("%s: device not registered to this ulp type %d\n",
		       __func__, ulp_type);
618 619 620 621 622
		mutex_unlock(&cnic_lock);
		return -EINVAL;
	}
	mutex_unlock(&cnic_lock);

623 624
	if (ulp_type == CNIC_ULP_ISCSI)
		cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
625 626
	else if (ulp_type == CNIC_ULP_FCOE)
		dev->fcoe_cap = NULL;
627

628 629
	synchronize_rcu();

630 631 632 633 634 635
	while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
	       i < 20) {
		msleep(100);
		i++;
	}
	if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
636
		netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
637

638 639
	cnic_ulp_ctl(dev, ulp_type, false);

640 641 642 643
	return 0;
}
EXPORT_SYMBOL(cnic_unregister_driver);

644 645
static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
			    u32 next)
646 647 648
{
	id_tbl->start = start_id;
	id_tbl->max = size;
649
	id_tbl->next = next;
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
	spin_lock_init(&id_tbl->lock);
	id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
	if (!id_tbl->table)
		return -ENOMEM;

	return 0;
}

static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
{
	kfree(id_tbl->table);
	id_tbl->table = NULL;
}

static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
{
	int ret = -1;

	id -= id_tbl->start;
	if (id >= id_tbl->max)
		return ret;

	spin_lock(&id_tbl->lock);
	if (!test_bit(id, id_tbl->table)) {
		set_bit(id, id_tbl->table);
		ret = 0;
	}
	spin_unlock(&id_tbl->lock);
	return ret;
}

/* Returns -1 if not successful */
static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
{
	u32 id;

	spin_lock(&id_tbl->lock);
	id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
	if (id >= id_tbl->max) {
		id = -1;
		if (id_tbl->next != 0) {
			id = find_first_zero_bit(id_tbl->table, id_tbl->next);
			if (id >= id_tbl->next)
				id = -1;
		}
	}

	if (id < id_tbl->max) {
		set_bit(id, id_tbl->table);
		id_tbl->next = (id + 1) & (id_tbl->max - 1);
		id += id_tbl->start;
	}

	spin_unlock(&id_tbl->lock);

	return id;
}

static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
{
	if (id == -1)
		return;

	id -= id_tbl->start;
	if (id >= id_tbl->max)
		return;

	clear_bit(id, id_tbl->table);
}

static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
{
	int i;

	if (!dma->pg_arr)
		return;

	for (i = 0; i < dma->num_pages; i++) {
		if (dma->pg_arr[i]) {
729
			dma_free_coherent(&dev->pcidev->dev, BNX2_PAGE_SIZE,
M
Michael Chan 已提交
730
					  dma->pg_arr[i], dma->pg_map_arr[i]);
731 732 733 734
			dma->pg_arr[i] = NULL;
		}
	}
	if (dma->pgtbl) {
M
Michael Chan 已提交
735 736
		dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
				  dma->pgtbl, dma->pgtbl_map);
737 738 739 740 741 742 743 744 745 746
		dma->pgtbl = NULL;
	}
	kfree(dma->pg_arr);
	dma->pg_arr = NULL;
	dma->num_pages = 0;
}

static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
{
	int i;
M
Michael Chan 已提交
747
	__le32 *page_table = (__le32 *) dma->pgtbl;
748 749 750

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in big endian format. */
M
Michael Chan 已提交
751
		*page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
752
		page_table++;
M
Michael Chan 已提交
753
		*page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
754 755 756 757
		page_table++;
	}
}

758 759 760
static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
{
	int i;
M
Michael Chan 已提交
761
	__le32 *page_table = (__le32 *) dma->pgtbl;
762 763 764

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in little endian format. */
M
Michael Chan 已提交
765
		*page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
766
		page_table++;
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Michael Chan 已提交
767
		*page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
768 769 770 771
		page_table++;
	}
}

772 773 774 775 776 777 778 779 780 781 782 783 784 785 786
static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
			  int pages, int use_pg_tbl)
{
	int i, size;
	struct cnic_local *cp = dev->cnic_priv;

	size = pages * (sizeof(void *) + sizeof(dma_addr_t));
	dma->pg_arr = kzalloc(size, GFP_ATOMIC);
	if (dma->pg_arr == NULL)
		return -ENOMEM;

	dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages);
	dma->num_pages = pages;

	for (i = 0; i < pages; i++) {
M
Michael Chan 已提交
787
		dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
788
						    BNX2_PAGE_SIZE,
M
Michael Chan 已提交
789 790
						    &dma->pg_map_arr[i],
						    GFP_ATOMIC);
791 792 793 794 795 796
		if (dma->pg_arr[i] == NULL)
			goto error;
	}
	if (!use_pg_tbl)
		return 0;

797 798
	dma->pgtbl_size = ((pages * 8) + BNX2_PAGE_SIZE - 1) &
			  ~(BNX2_PAGE_SIZE - 1);
M
Michael Chan 已提交
799 800
	dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
					&dma->pgtbl_map, GFP_ATOMIC);
801 802 803 804 805 806 807 808 809 810 811 812
	if (dma->pgtbl == NULL)
		goto error;

	cp->setup_pgtbl(dev, dma);

	return 0;

error:
	cnic_free_dma(dev, dma);
	return -ENOMEM;
}

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Michael Chan 已提交
813 814 815 816 817 818 819
static void cnic_free_context(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int i;

	for (i = 0; i < cp->ctx_blks; i++) {
		if (cp->ctx_arr[i].ctx) {
M
Michael Chan 已提交
820 821 822
			dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
					  cp->ctx_arr[i].ctx,
					  cp->ctx_arr[i].mapping);
M
Michael Chan 已提交
823 824 825 826 827
			cp->ctx_arr[i].ctx = NULL;
		}
	}
}

828
static void __cnic_free_uio_rings(struct cnic_uio_dev *udev)
829
{
M
Michael Chan 已提交
830 831 832 833
	if (udev->l2_buf) {
		dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size,
				  udev->l2_buf, udev->l2_buf_map);
		udev->l2_buf = NULL;
834 835
	}

M
Michael Chan 已提交
836 837 838 839
	if (udev->l2_ring) {
		dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
				  udev->l2_ring, udev->l2_ring_map);
		udev->l2_ring = NULL;
840
	}
841

842 843 844 845 846 847 848 849
}

static void __cnic_free_uio(struct cnic_uio_dev *udev)
{
	uio_unregister_device(&udev->cnic_uinfo);

	__cnic_free_uio_rings(udev);

850 851
	pci_dev_put(udev->pdev);
	kfree(udev);
M
Michael Chan 已提交
852 853
}

M
Michael Chan 已提交
854
static void cnic_free_uio(struct cnic_uio_dev *udev)
M
Michael Chan 已提交
855
{
M
Michael Chan 已提交
856
	if (!udev)
M
Michael Chan 已提交
857 858
		return;

859 860 861
	write_lock(&cnic_dev_lock);
	list_del_init(&udev->list);
	write_unlock(&cnic_dev_lock);
M
Michael Chan 已提交
862
	__cnic_free_uio(udev);
M
Michael Chan 已提交
863 864 865 866 867
}

static void cnic_free_resc(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
868
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
869

M
Michael Chan 已提交
870
	if (udev) {
871
		udev->dev = NULL;
M
Michael Chan 已提交
872
		cp->udev = NULL;
873 874
		if (udev->uio_dev == -1)
			__cnic_free_uio_rings(udev);
M
Michael Chan 已提交
875
	}
876

M
Michael Chan 已提交
877
	cnic_free_context(dev);
878 879 880 881 882 883
	kfree(cp->ctx_arr);
	cp->ctx_arr = NULL;
	cp->ctx_blks = 0;

	cnic_free_dma(dev, &cp->gbl_buf_info);
	cnic_free_dma(dev, &cp->kwq_info);
884
	cnic_free_dma(dev, &cp->kwq_16_data_info);
M
Michael Chan 已提交
885
	cnic_free_dma(dev, &cp->kcq2.dma);
886
	cnic_free_dma(dev, &cp->kcq1.dma);
887 888 889 890 891
	kfree(cp->iscsi_tbl);
	cp->iscsi_tbl = NULL;
	kfree(cp->ctx_tbl);
	cp->ctx_tbl = NULL;

M
Michael Chan 已提交
892
	cnic_free_id_tbl(&cp->fcoe_cid_tbl);
893 894 895 896 897 898 899
	cnic_free_id_tbl(&cp->cid_tbl);
}

static int cnic_alloc_context(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

900
	if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
901 902
		int i, k, arr_size;

903 904
		cp->ctx_blk_size = BNX2_PAGE_SIZE;
		cp->cids_per_blk = BNX2_PAGE_SIZE / 128;
905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934
		arr_size = BNX2_MAX_CID / cp->cids_per_blk *
			   sizeof(struct cnic_ctx);
		cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
		if (cp->ctx_arr == NULL)
			return -ENOMEM;

		k = 0;
		for (i = 0; i < 2; i++) {
			u32 j, reg, off, lo, hi;

			if (i == 0)
				off = BNX2_PG_CTX_MAP;
			else
				off = BNX2_ISCSI_CTX_MAP;

			reg = cnic_reg_rd_ind(dev, off);
			lo = reg >> 16;
			hi = reg & 0xffff;
			for (j = lo; j < hi; j += cp->cids_per_blk, k++)
				cp->ctx_arr[k].cid = j;
		}

		cp->ctx_blks = k;
		if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
			cp->ctx_blks = 0;
			return -ENOMEM;
		}

		for (i = 0; i < cp->ctx_blks; i++) {
			cp->ctx_arr[i].ctx =
M
Michael Chan 已提交
935
				dma_alloc_coherent(&dev->pcidev->dev,
936
						   BNX2_PAGE_SIZE,
M
Michael Chan 已提交
937 938
						   &cp->ctx_arr[i].mapping,
						   GFP_KERNEL);
939 940 941 942 943 944 945
			if (cp->ctx_arr[i].ctx == NULL)
				return -ENOMEM;
		}
	}
	return 0;
}

946 947 948 949 950 951 952 953 954 955 956
static u16 cnic_bnx2_next_idx(u16 idx)
{
	return idx + 1;
}

static u16 cnic_bnx2_hw_idx(u16 idx)
{
	return idx;
}

static u16 cnic_bnx2x_next_idx(u16 idx)
957
{
958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975
	idx++;
	if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
		idx++;

	return idx;
}

static u16 cnic_bnx2x_hw_idx(u16 idx)
{
	if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
		idx++;
	return idx;
}

static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
			  bool use_pg_tbl)
{
	int err, i, use_page_tbl = 0;
976 977
	struct kcqe **kcq;

978 979
	if (use_pg_tbl)
		use_page_tbl = 1;
980

981
	err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
982 983 984 985 986 987
	if (err)
		return err;

	kcq = (struct kcqe **) info->dma.pg_arr;
	info->kcq = kcq;

988 989 990
	info->next_idx = cnic_bnx2_next_idx;
	info->hw_idx = cnic_bnx2_hw_idx;
	if (use_pg_tbl)
991 992
		return 0;

993 994 995
	info->next_idx = cnic_bnx2x_next_idx;
	info->hw_idx = cnic_bnx2x_hw_idx;

996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008
	for (i = 0; i < KCQ_PAGE_CNT; i++) {
		struct bnx2x_bd_chain_next *next =
			(struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
		int j = i + 1;

		if (j >= KCQ_PAGE_CNT)
			j = 0;
		next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32;
		next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff;
	}
	return 0;
}

1009 1010 1011 1012 1013 1014 1015
static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages)
{
	struct cnic_local *cp = udev->dev->cnic_priv;

	if (udev->l2_ring)
		return 0;

1016
	udev->l2_ring_size = pages * BNX2_PAGE_SIZE;
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
	udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size,
					   &udev->l2_ring_map,
					   GFP_KERNEL | __GFP_COMP);
	if (!udev->l2_ring)
		return -ENOMEM;

	udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
	udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
	udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
					  &udev->l2_buf_map,
					  GFP_KERNEL | __GFP_COMP);
	if (!udev->l2_buf) {
		__cnic_free_uio_rings(udev);
		return -ENOMEM;
	}

	return 0;

}

M
Michael Chan 已提交
1037
static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
1038 1039
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
1040 1041
	struct cnic_uio_dev *udev;

1042 1043 1044 1045
	read_lock(&cnic_dev_lock);
	list_for_each_entry(udev, &cnic_udev_list, list) {
		if (udev->pdev == dev->pcidev) {
			udev->dev = dev;
1046 1047 1048 1049 1050
			if (__cnic_alloc_uio_rings(udev, pages)) {
				udev->dev = NULL;
				read_unlock(&cnic_dev_lock);
				return -ENOMEM;
			}
1051 1052 1053 1054 1055 1056 1057
			cp->udev = udev;
			read_unlock(&cnic_dev_lock);
			return 0;
		}
	}
	read_unlock(&cnic_dev_lock);

M
Michael Chan 已提交
1058 1059 1060 1061 1062
	udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
	if (!udev)
		return -ENOMEM;

	udev->uio_dev = -1;
1063

M
Michael Chan 已提交
1064 1065
	udev->dev = dev;
	udev->pdev = dev->pcidev;
1066

1067 1068
	if (__cnic_alloc_uio_rings(udev, pages))
		goto err_udev;
1069

1070 1071 1072 1073 1074 1075
	write_lock(&cnic_dev_lock);
	list_add(&udev->list, &cnic_udev_list);
	write_unlock(&cnic_dev_lock);

	pci_dev_get(udev->pdev);

M
Michael Chan 已提交
1076 1077
	cp->udev = udev;

1078
	return 0;
1079

1080 1081 1082
 err_udev:
	kfree(udev);
	return -ENOMEM;
1083 1084
}

M
Michael Chan 已提交
1085 1086
static int cnic_init_uio(struct cnic_dev *dev)
{
1087
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
1088
	struct cnic_uio_dev *udev = cp->udev;
1089
	struct uio_info *uinfo;
M
Michael Chan 已提交
1090
	int ret = 0;
1091

M
Michael Chan 已提交
1092
	if (!udev)
1093
		return -ENOMEM;
1094

M
Michael Chan 已提交
1095 1096
	uinfo = &udev->cnic_uinfo;

M
Michael Chan 已提交
1097 1098 1099
	uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
	uinfo->mem[0].internal_addr = dev->regview;
	uinfo->mem[0].memtype = UIO_MEM_PHYS;
1100

1101
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
M
Michael Chan 已提交
1102 1103
		uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
						     TX_MAX_TSS_RINGS + 1);
1104
		uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
M
Michael Chan 已提交
1105
					PAGE_MASK;
1106 1107 1108 1109 1110 1111
		if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
			uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
		else
			uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;

		uinfo->name = "bnx2_cnic";
1112
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
M
Michael Chan 已提交
1113 1114
		uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);

1115 1116
		uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
			PAGE_MASK;
1117
		uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1118 1119

		uinfo->name = "bnx2x_cnic";
1120 1121
	}

1122 1123
	uinfo->mem[1].memtype = UIO_MEM_LOGICAL;

M
Michael Chan 已提交
1124 1125
	uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
	uinfo->mem[2].size = udev->l2_ring_size;
1126 1127
	uinfo->mem[2].memtype = UIO_MEM_LOGICAL;

M
Michael Chan 已提交
1128 1129
	uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
	uinfo->mem[3].size = udev->l2_buf_size;
1130 1131 1132 1133 1134 1135 1136 1137
	uinfo->mem[3].memtype = UIO_MEM_LOGICAL;

	uinfo->version = CNIC_MODULE_VERSION;
	uinfo->irq = UIO_IRQ_CUSTOM;

	uinfo->open = cnic_uio_open;
	uinfo->release = cnic_uio_close;

1138 1139 1140
	if (udev->uio_dev == -1) {
		if (!uinfo->priv) {
			uinfo->priv = udev;
1141

1142 1143 1144 1145 1146
			ret = uio_register_device(&udev->pdev->dev, uinfo);
		}
	} else {
		cnic_init_rings(dev);
	}
1147

M
Michael Chan 已提交
1148
	return ret;
1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160
}

static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int ret;

	ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
	if (ret)
		goto error;
	cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;

1161
	ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1162 1163 1164 1165 1166 1167 1168
	if (ret)
		goto error;

	ret = cnic_alloc_context(dev);
	if (ret)
		goto error;

M
Michael Chan 已提交
1169
	ret = cnic_alloc_uio_rings(dev, 2);
1170 1171 1172
	if (ret)
		goto error;

M
Michael Chan 已提交
1173
	ret = cnic_init_uio(dev);
1174 1175
	if (ret)
		goto error;
1176 1177 1178 1179 1180 1181 1182 1183

	return 0;

error:
	cnic_free_resc(dev);
	return ret;
}

1184 1185 1186 1187
static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int ctx_blk_size = cp->ethdev->ctx_blk_size;
1188
	int total_mem, blks, i;
1189

1190
	total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1191 1192 1193 1194 1195 1196 1197
	blks = total_mem / ctx_blk_size;
	if (total_mem % ctx_blk_size)
		blks++;

	if (blks > cp->ethdev->ctx_tbl_len)
		return -ENOMEM;

1198
	cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1199 1200 1201 1202 1203
	if (cp->ctx_arr == NULL)
		return -ENOMEM;

	cp->ctx_blks = blks;
	cp->ctx_blk_size = ctx_blk_size;
M
Michael Chan 已提交
1204
	if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1205 1206 1207 1208 1209 1210 1211 1212
		cp->ctx_align = 0;
	else
		cp->ctx_align = ctx_blk_size;

	cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;

	for (i = 0; i < blks; i++) {
		cp->ctx_arr[i].ctx =
M
Michael Chan 已提交
1213 1214 1215
			dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
					   &cp->ctx_arr[i].mapping,
					   GFP_KERNEL);
1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233
		if (cp->ctx_arr[i].ctx == NULL)
			return -ENOMEM;

		if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) {
			if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) {
				cnic_free_context(dev);
				cp->ctx_blk_size += cp->ctx_align;
				i = -1;
				continue;
			}
		}
	}
	return 0;
}

static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
1234 1235
	struct cnic_eth_dev *ethdev = cp->ethdev;
	u32 start_cid = ethdev->starting_cid;
1236 1237 1238
	int i, j, n, ret, pages;
	struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;

1239
	cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1240
	cp->iscsi_start_cid = start_cid;
M
Michael Chan 已提交
1241 1242
	cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;

1243
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1244
		cp->max_cid_space += dev->max_fcoe_conn;
M
Michael Chan 已提交
1245 1246 1247 1248 1249
		cp->fcoe_init_cid = ethdev->fcoe_init_cid;
		if (!cp->fcoe_init_cid)
			cp->fcoe_init_cid = 0x10;
	}

1250 1251 1252 1253 1254 1255
	cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ,
				GFP_KERNEL);
	if (!cp->iscsi_tbl)
		goto error;

	cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) *
1256
				cp->max_cid_space, GFP_KERNEL);
1257 1258 1259 1260 1261 1262 1263 1264
	if (!cp->ctx_tbl)
		goto error;

	for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) {
		cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i];
		cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI;
	}

M
Michael Chan 已提交
1265 1266 1267
	for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
		cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;

1268
	pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1269 1270 1271 1272 1273 1274 1275
		PAGE_SIZE;

	ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
	if (ret)
		return -ENOMEM;

	n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1276
	for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1277 1278 1279 1280 1281 1282 1283 1284 1285 1286
		long off = CNIC_KWQ16_DATA_SIZE * (i % n);

		cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off;
		cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] +
						   off;

		if ((i % n) == (n - 1))
			j++;
	}

1287
	ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1288 1289 1290
	if (ret)
		goto error;

1291
	if (CNIC_SUPPORTS_FCOE(cp)) {
1292
		ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
M
Michael Chan 已提交
1293 1294 1295 1296
		if (ret)
			goto error;
	}

1297 1298 1299 1300 1301 1302 1303 1304 1305
	pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
	ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
	if (ret)
		goto error;

	ret = cnic_alloc_bnx2x_context(dev);
	if (ret)
		goto error;

1306 1307 1308
	if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
		return 0;

1309 1310 1311 1312
	cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;

	cp->l2_rx_ring_size = 15;

M
Michael Chan 已提交
1313
	ret = cnic_alloc_uio_rings(dev, 4);
1314 1315 1316
	if (ret)
		goto error;

M
Michael Chan 已提交
1317
	ret = cnic_init_uio(dev);
1318 1319 1320 1321 1322 1323 1324 1325 1326 1327
	if (ret)
		goto error;

	return 0;

error:
	cnic_free_resc(dev);
	return -ENOMEM;
}

1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345
static inline u32 cnic_kwq_avail(struct cnic_local *cp)
{
	return cp->max_kwq_idx -
		((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx);
}

static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
				  u32 num_wqes)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct kwqe *prod_qe;
	u16 prod, sw_prod, i;

	if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
		return -EAGAIN;		/* bnx2 is down */

	spin_lock_bh(&cp->cnic_ulp_lock);
	if (num_wqes > cnic_kwq_avail(cp) &&
1346
	    !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1347 1348 1349 1350
		spin_unlock_bh(&cp->cnic_ulp_lock);
		return -EAGAIN;
	}

1351
	clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368

	prod = cp->kwq_prod_idx;
	sw_prod = prod & MAX_KWQ_IDX;
	for (i = 0; i < num_wqes; i++) {
		prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)];
		memcpy(prod_qe, wqes[i], sizeof(struct kwqe));
		prod++;
		sw_prod = prod & MAX_KWQ_IDX;
	}
	cp->kwq_prod_idx = prod;

	CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx);

	spin_unlock_bh(&cp->cnic_ulp_lock);
	return 0;
}

1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386
static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid,
				   union l5cm_specific_data *l5_data)
{
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
	dma_addr_t map;

	map = ctx->kwqe_data_mapping;
	l5_data->phy_address.lo = (u64) map & 0xffffffff;
	l5_data->phy_address.hi = (u64) map >> 32;
	return ctx->kwqe_data;
}

static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid,
				u32 type, union l5cm_specific_data *l5_data)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct l5cm_spe kwqe;
	struct kwqe_16 *kwq[1];
1387
	u16 type_16;
1388 1389 1390 1391
	int ret;

	kwqe.hdr.conn_and_cmd_data =
		cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1392
			     BNX2X_HW_CID(cp, cid)));
1393 1394 1395 1396 1397 1398

	type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
	type_16 |= (cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
		   SPE_HDR_FUNCTION_ID;

	kwqe.hdr.type = cpu_to_le16(type_16);
1399
	kwqe.hdr.reserved1 = 0;
1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411
	kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
	kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);

	kwq[0] = (struct kwqe_16 *) &kwqe;

	spin_lock_bh(&cp->cnic_ulp_lock);
	ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
	spin_unlock_bh(&cp->cnic_ulp_lock);

	if (ret == 1)
		return 0;

1412
	return ret;
1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432
}

static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
				   struct kcqe *cqes[], u32 num_cqes)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_ulp_ops *ulp_ops;

	rcu_read_lock();
	ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
	if (likely(ulp_ops)) {
		ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
					  cqes, num_cqes);
	}
	rcu_read_unlock();
}

static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
1433
	struct bnx2x *bp = netdev_priv(dev->netdev);
1434
	struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1435 1436
	int hq_bds, pages;
	u32 pfid = cp->pfid;
1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452

	cp->num_iscsi_tasks = req1->num_tasks_per_conn;
	cp->num_ccells = req1->num_ccells_per_conn;
	cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE *
			      cp->num_iscsi_tasks;
	cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS *
			BNX2X_ISCSI_R2TQE_SIZE;
	cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE;
	pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
	hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
	cp->num_cqs = req1->num_cqs;

	if (!dev->max_iscsi_conn)
		return 0;

	/* init Tstorm RAM */
1453
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1454
		  req1->rq_num_wqes);
1455
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1456 1457
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1458
		 TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1459
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1460
		  TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1461 1462 1463 1464
		  req1->num_tasks_per_conn);

	/* init Ustorm RAM */
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1465
		  USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1466
		  req1->rq_buffer_size);
1467
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1468 1469
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1470
		 USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1471
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1472
		  USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1473
		  req1->num_tasks_per_conn);
1474
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1475
		  req1->rq_num_wqes);
1476
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1477
		  req1->cq_num_wqes);
1478
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1479 1480 1481
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Xstorm RAM */
1482
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1483 1484
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1485
		 XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1486
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1487
		  XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1488
		  req1->num_tasks_per_conn);
1489
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1490
		  hq_bds);
1491
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1492
		  req1->num_tasks_per_conn);
1493
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1494 1495 1496
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Cstorm RAM */
1497
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1498 1499
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1500
		 CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1501
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1502
		  CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1503
		  req1->num_tasks_per_conn);
1504
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1505
		  req1->cq_num_wqes);
1506
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1507 1508 1509 1510 1511 1512 1513 1514 1515
		  hq_bds);

	return 0;
}

static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe;
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
1516
	struct bnx2x *bp = netdev_priv(dev->netdev);
1517
	u32 pfid = cp->pfid;
1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528
	struct iscsi_kcqe kcqe;
	struct kcqe *cqes[1];

	memset(&kcqe, 0, sizeof(kcqe));
	if (!dev->max_iscsi_conn) {
		kcqe.completion_status =
			ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED;
		goto done;
	}

	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1529
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1530
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1531
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1532 1533 1534
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1535
		  USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1536
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1537
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1538
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1539
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1540 1541 1542
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1543
		  CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565

	kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;

done:
	kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);

	return 0;
}

static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

	if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
		struct cnic_iscsi *iscsi = ctx->proto.iscsi;

		cnic_free_dma(dev, &iscsi->hq_info);
		cnic_free_dma(dev, &iscsi->r2tq_info);
		cnic_free_dma(dev, &iscsi->task_array_info);
M
Michael Chan 已提交
1566 1567 1568
		cnic_free_id(&cp->cid_tbl, ctx->cid);
	} else {
		cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1569
	}
M
Michael Chan 已提交
1570

1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581
	ctx->cid = 0;
}

static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
{
	u32 cid;
	int ret, pages;
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
	struct cnic_iscsi *iscsi = ctx->proto.iscsi;

M
Michael Chan 已提交
1582 1583 1584 1585 1586 1587 1588 1589 1590 1591
	if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
		cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
		if (cid == -1) {
			ret = -ENOMEM;
			goto error;
		}
		ctx->cid = cid;
		return 0;
	}

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
	cid = cnic_alloc_new_id(&cp->cid_tbl);
	if (cid == -1) {
		ret = -ENOMEM;
		goto error;
	}

	ctx->cid = cid;
	pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;

	ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
	if (ret)
		goto error;

	pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
	ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
	if (ret)
		goto error;

	pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
	ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
	if (ret)
		goto error;

	return 0;

error:
	cnic_free_bnx2x_conn_resc(dev, l5_cid);
	return ret;
}

static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
				struct regpair *ctx_addr)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
	int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
	unsigned long align_off = 0;
	dma_addr_t ctx_map;
	void *ctx;

	if (cp->ctx_align) {
		unsigned long mask = cp->ctx_align - 1;

		if (cp->ctx_arr[blk].mapping & mask)
			align_off = cp->ctx_align -
				    (cp->ctx_arr[blk].mapping & mask);
	}
	ctx_map = cp->ctx_arr[blk].mapping + align_off +
		(off * BNX2X_CONTEXT_MEM_SIZE);
	ctx = cp->ctx_arr[blk].ctx + align_off +
	      (off * BNX2X_CONTEXT_MEM_SIZE);
	if (init)
		memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);

	ctx_addr->lo = ctx_map & 0xffffffff;
	ctx_addr->hi = (u64) ctx_map >> 32;
	return ctx;
}

static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
				u32 num)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct iscsi_kwqe_conn_offload1 *req1 =
			(struct iscsi_kwqe_conn_offload1 *) wqes[0];
	struct iscsi_kwqe_conn_offload2 *req2 =
			(struct iscsi_kwqe_conn_offload2 *) wqes[1];
	struct iscsi_kwqe_conn_offload3 *req3;
	struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
	struct cnic_iscsi *iscsi = ctx->proto.iscsi;
	u32 cid = ctx->cid;
1664
	u32 hw_cid = BNX2X_HW_CID(cp, cid);
1665 1666 1667
	struct iscsi_context *ictx;
	struct regpair context_addr;
	int i, j, n = 2, n_max;
1668
	u8 port = CNIC_PORT(cp);
1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719

	ctx->ctx_flags = 0;
	if (!req2->num_additional_wqes)
		return -EINVAL;

	n_max = req2->num_additional_wqes + 2;

	ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
	if (ictx == NULL)
		return -ENOMEM;

	req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];

	ictx->xstorm_ag_context.hq_prod = 1;

	ictx->xstorm_st_context.iscsi.first_burst_length =
		ISCSI_DEF_FIRST_BURST_LEN;
	ictx->xstorm_st_context.iscsi.max_send_pdu_length =
		ISCSI_DEF_MAX_RECV_SEG_LEN;
	ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
		req1->sq_page_table_addr_lo;
	ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
		req1->sq_page_table_addr_hi;
	ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
	ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
	ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
		iscsi->hq_info.pgtbl_map & 0xffffffff;
	ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
		(u64) iscsi->hq_info.pgtbl_map >> 32;
	ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
		iscsi->hq_info.pgtbl[0];
	ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
		iscsi->hq_info.pgtbl[1];
	ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
		iscsi->r2tq_info.pgtbl_map & 0xffffffff;
	ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
		(u64) iscsi->r2tq_info.pgtbl_map >> 32;
	ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
		iscsi->r2tq_info.pgtbl[0];
	ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
		iscsi->r2tq_info.pgtbl[1];
	ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
		iscsi->task_array_info.pgtbl_map & 0xffffffff;
	ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
		(u64) iscsi->task_array_info.pgtbl_map >> 32;
	ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
		BNX2X_ISCSI_PBL_NOT_CACHED;
	ictx->xstorm_st_context.iscsi.flags.flags |=
		XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
	ictx->xstorm_st_context.iscsi.flags.flags |=
		XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730
	ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
		ETH_P_8021Q;
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
		cp->port_mode == CHIP_2_PORT_MODE) {

		port = 0;
	}
	ictx->xstorm_st_context.common.flags =
		1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
	ictx->xstorm_st_context.common.flags =
		port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741

	ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
	/* TSTORM requires the base address of RQ DB & not PTE */
	ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
		req2->rq_page_table_addr_lo & PAGE_MASK;
	ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
		req2->rq_page_table_addr_hi;
	ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
	ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
	ictx->tstorm_st_context.tcp.flags2 |=
		TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
1742 1743
	ictx->tstorm_st_context.tcp.ooo_support_mode =
		TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1744

1745
	ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1746 1747

	ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1748
		req2->rq_page_table_addr_lo;
1749
	ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1750
		req2->rq_page_table_addr_hi;
1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 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 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 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
	ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi;
	ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo;
	ictx->ustorm_st_context.ring.r2tq.pbl_base.lo =
		iscsi->r2tq_info.pgtbl_map & 0xffffffff;
	ictx->ustorm_st_context.ring.r2tq.pbl_base.hi =
		(u64) iscsi->r2tq_info.pgtbl_map >> 32;
	ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo =
		iscsi->r2tq_info.pgtbl[0];
	ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi =
		iscsi->r2tq_info.pgtbl[1];
	ictx->ustorm_st_context.ring.cq_pbl_base.lo =
		req1->cq_page_table_addr_lo;
	ictx->ustorm_st_context.ring.cq_pbl_base.hi =
		req1->cq_page_table_addr_hi;
	ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN;
	ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi;
	ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo;
	ictx->ustorm_st_context.task_pbe_cache_index =
		BNX2X_ISCSI_PBL_NOT_CACHED;
	ictx->ustorm_st_context.task_pdu_cache_index =
		BNX2X_ISCSI_PDU_HEADER_NOT_CACHED;

	for (i = 1, j = 1; i < cp->num_cqs; i++, j++) {
		if (j == 3) {
			if (n >= n_max)
				break;
			req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
			j = 0;
		}
		ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN;
		ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo =
			req3->qp_first_pte[j].hi;
		ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi =
			req3->qp_first_pte[j].lo;
	}

	ictx->ustorm_st_context.task_pbl_base.lo =
		iscsi->task_array_info.pgtbl_map & 0xffffffff;
	ictx->ustorm_st_context.task_pbl_base.hi =
		(u64) iscsi->task_array_info.pgtbl_map >> 32;
	ictx->ustorm_st_context.tce_phy_addr.lo =
		iscsi->task_array_info.pgtbl[0];
	ictx->ustorm_st_context.tce_phy_addr.hi =
		iscsi->task_array_info.pgtbl[1];
	ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
	ictx->ustorm_st_context.num_cqs = cp->num_cqs;
	ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN;
	ictx->ustorm_st_context.negotiated_rx_and_flags |=
		ISCSI_DEF_MAX_BURST_LEN;
	ictx->ustorm_st_context.negotiated_rx |=
		ISCSI_DEFAULT_MAX_OUTSTANDING_R2T <<
		USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT;

	ictx->cstorm_st_context.hq_pbl_base.lo =
		iscsi->hq_info.pgtbl_map & 0xffffffff;
	ictx->cstorm_st_context.hq_pbl_base.hi =
		(u64) iscsi->hq_info.pgtbl_map >> 32;
	ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0];
	ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1];
	ictx->cstorm_st_context.task_pbl_base.lo =
		iscsi->task_array_info.pgtbl_map & 0xffffffff;
	ictx->cstorm_st_context.task_pbl_base.hi =
		(u64) iscsi->task_array_info.pgtbl_map >> 32;
	/* CSTORM and USTORM initialization is different, CSTORM requires
	 * CQ DB base & not PTE addr */
	ictx->cstorm_st_context.cq_db_base.lo =
		req1->cq_page_table_addr_lo & PAGE_MASK;
	ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi;
	ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id;
	ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1;
	for (i = 0; i < cp->num_cqs; i++) {
		ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] =
			ISCSI_INITIAL_SN;
		ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] =
			ISCSI_INITIAL_SN;
	}

	ictx->xstorm_ag_context.cdu_reserved =
		CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
				       ISCSI_CONNECTION_TYPE);
	ictx->ustorm_ag_context.cdu_usage =
		CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
				       ISCSI_CONNECTION_TYPE);
	return 0;

}

static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
				   u32 num, int *work)
{
	struct iscsi_kwqe_conn_offload1 *req1;
	struct iscsi_kwqe_conn_offload2 *req2;
	struct cnic_local *cp = dev->cnic_priv;
1844
	struct cnic_context *ctx;
1845 1846 1847
	struct iscsi_kcqe kcqe;
	struct kcqe *cqes[1];
	u32 l5_cid;
1848
	int ret = 0;
1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860

	if (num < 2) {
		*work = num;
		return -EINVAL;
	}

	req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
	req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
	if ((num - 2) < req2->num_additional_wqes) {
		*work = num;
		return -EINVAL;
	}
1861
	*work = 2 + req2->num_additional_wqes;
1862 1863 1864 1865 1866 1867 1868 1869 1870 1871

	l5_cid = req1->iscsi_conn_id;
	if (l5_cid >= MAX_ISCSI_TBL_SZ)
		return -EINVAL;

	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
	kcqe.iscsi_conn_id = l5_cid;
	kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;

1872 1873 1874 1875 1876 1877 1878
	ctx = &cp->ctx_tbl[l5_cid];
	if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) {
		kcqe.completion_status =
			ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY;
		goto done;
	}

1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896
	if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
		atomic_dec(&cp->iscsi_conn);
		goto done;
	}
	ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
	if (ret) {
		atomic_dec(&cp->iscsi_conn);
		ret = 0;
		goto done;
	}
	ret = cnic_setup_bnx2x_ctx(dev, wqes, num);
	if (ret < 0) {
		cnic_free_bnx2x_conn_resc(dev, l5_cid);
		atomic_dec(&cp->iscsi_conn);
		goto done;
	}

	kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
1897
	kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1898 1899 1900 1901

done:
	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1902
	return 0;
1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929
}


static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct iscsi_kwqe_conn_update *req =
		(struct iscsi_kwqe_conn_update *) kwqe;
	void *data;
	union l5cm_specific_data l5_data;
	u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
	int ret;

	if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
		return -EINVAL;

	data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
	if (!data)
		return -ENOMEM;

	memcpy(data, kwqe, sizeof(struct kwqe));

	ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
			req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
	return ret;
}

1930
static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1931 1932 1933
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1934 1935
	union l5cm_specific_data l5_data;
	int ret;
1936
	u32 hw_cid;
1937 1938 1939 1940

	init_waitqueue_head(&ctx->waitq);
	ctx->wait_cond = 0;
	memset(&l5_data, 0, sizeof(l5_data));
1941 1942 1943
	hw_cid = BNX2X_HW_CID(cp, ctx->cid);

	ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1944
				  hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1945

1946
	if (ret == 0) {
1947
		wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1948 1949 1950
		if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
			return -EBUSY;
	}
1951

1952
	return 0;
1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968
}

static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct iscsi_kwqe_conn_destroy *req =
		(struct iscsi_kwqe_conn_destroy *) kwqe;
	u32 l5_cid = req->reserved0;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
	int ret = 0;
	struct iscsi_kcqe kcqe;
	struct kcqe *cqes[1];

	if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
		goto skip_cfc_delete;

1969 1970 1971 1972 1973 1974 1975 1976 1977 1978
	if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
		unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies;

		if (delta > (2 * HZ))
			delta = 0;

		set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
		queue_delayed_work(cnic_wq, &cp->delete_task, delta);
		goto destroy_reply;
	}
1979 1980 1981

	ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);

1982 1983 1984
skip_cfc_delete:
	cnic_free_bnx2x_conn_resc(dev, l5_cid);

1985 1986 1987 1988
	if (!ret) {
		atomic_dec(&cp->iscsi_conn);
		clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
	}
1989

1990
destroy_reply:
1991 1992 1993 1994 1995 1996 1997 1998 1999
	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
	kcqe.iscsi_conn_id = l5_cid;
	kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
	kcqe.iscsi_conn_context_id = req->context_id;

	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);

2000
	return 0;
2001 2002 2003 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 2049 2050 2051 2052
}

static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
				      struct l4_kwq_connect_req1 *kwqe1,
				      struct l4_kwq_connect_req3 *kwqe3,
				      struct l5cm_active_conn_buffer *conn_buf)
{
	struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
	struct l5cm_xstorm_conn_buffer *xstorm_buf =
		&conn_buf->xstorm_conn_buffer;
	struct l5cm_tstorm_conn_buffer *tstorm_buf =
		&conn_buf->tstorm_conn_buffer;
	struct regpair context_addr;
	u32 cid = BNX2X_SW_CID(kwqe1->cid);
	struct in6_addr src_ip, dst_ip;
	int i;
	u32 *addrp;

	addrp = (u32 *) &conn_addr->local_ip_addr;
	for (i = 0; i < 4; i++, addrp++)
		src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);

	addrp = (u32 *) &conn_addr->remote_ip_addr;
	for (i = 0; i < 4; i++, addrp++)
		dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);

	cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);

	xstorm_buf->context_addr.hi = context_addr.hi;
	xstorm_buf->context_addr.lo = context_addr.lo;
	xstorm_buf->mss = 0xffff;
	xstorm_buf->rcv_buf = kwqe3->rcv_buf;
	if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
		xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
	xstorm_buf->pseudo_header_checksum =
		swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));

	if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
		tstorm_buf->params |=
			L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
	if (kwqe3->ka_timeout) {
		tstorm_buf->ka_enable = 1;
		tstorm_buf->ka_timeout = kwqe3->ka_timeout;
		tstorm_buf->ka_interval = kwqe3->ka_interval;
		tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
	}
	tstorm_buf->max_rt_time = 0xffffffff;
}

static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
2053
	struct bnx2x *bp = netdev_priv(dev->netdev);
2054
	u32 pfid = cp->pfid;
2055 2056 2057
	u8 *mac = dev->mac_addr;

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2058
		 XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2059
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2060
		 XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2061
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2062
		 XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2063
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2064
		 XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2065
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2066
		 XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2067
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2068
		 XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2069 2070

	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2071
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2072
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2073
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2074 2075
		 mac[4]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2076
		 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2077
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2078
		 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2079 2080
		 mac[2]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2081
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2082
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2083
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2084 2085 2086 2087 2088 2089
		 mac[0]);
}

static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
2090
	struct bnx2x *bp = netdev_priv(dev->netdev);
2091 2092 2093 2094 2095 2096 2097 2098 2099
	u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
	u16 tstorm_flags = 0;

	if (tcp_ts) {
		xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
		tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
	}

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2100
		 XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
2101 2102

	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
2103
		  TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
2104 2105 2106 2107 2108 2109
}

static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
			      u32 num, int *work)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
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	struct bnx2x *bp = netdev_priv(dev->netdev);
2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137
	struct l4_kwq_connect_req1 *kwqe1 =
		(struct l4_kwq_connect_req1 *) wqes[0];
	struct l4_kwq_connect_req3 *kwqe3;
	struct l5cm_active_conn_buffer *conn_buf;
	struct l5cm_conn_addr_params *conn_addr;
	union l5cm_specific_data l5_data;
	u32 l5_cid = kwqe1->pg_cid;
	struct cnic_sock *csk = &cp->csk_tbl[l5_cid];
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
	int ret;

	if (num < 2) {
		*work = num;
		return -EINVAL;
	}

	if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6)
		*work = 3;
	else
		*work = 2;

	if (num < *work) {
		*work = num;
		return -EINVAL;
	}

	if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) {
2138
		netdev_err(dev->netdev, "conn_buf size too big\n");
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
		return -ENOMEM;
	}
	conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
	if (!conn_buf)
		return -ENOMEM;

	memset(conn_buf, 0, sizeof(*conn_buf));

	conn_addr = &conn_buf->conn_addr_buf;
	conn_addr->remote_addr_0 = csk->ha[0];
	conn_addr->remote_addr_1 = csk->ha[1];
	conn_addr->remote_addr_2 = csk->ha[2];
	conn_addr->remote_addr_3 = csk->ha[3];
	conn_addr->remote_addr_4 = csk->ha[4];
	conn_addr->remote_addr_5 = csk->ha[5];

	if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) {
		struct l4_kwq_connect_req2 *kwqe2 =
			(struct l4_kwq_connect_req2 *) wqes[1];

		conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4;
		conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3;
		conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2;

		conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4;
		conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3;
		conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2;
		conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION;
	}
	kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1];

	conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip;
	conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip;
	conn_addr->local_tcp_port = kwqe1->src_port;
	conn_addr->remote_tcp_port = kwqe1->dst_port;

	conn_addr->pmtu = kwqe3->pmtu;
	cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf);

	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
2179
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2180 2181 2182 2183 2184 2185 2186

	cnic_bnx2x_set_tcp_timestamp(dev,
		kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP);

	ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
			kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
	if (!ret)
2187
		set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
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

	return ret;
}

static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
	union l5cm_specific_data l5_data;
	int ret;

	memset(&l5_data, 0, sizeof(l5_data));
	ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
			req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
	return ret;
}

static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
	union l5cm_specific_data l5_data;
	int ret;

	memset(&l5_data, 0, sizeof(l5_data));
	ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
			req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
	return ret;
}
static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
	struct l4_kcq kcqe;
	struct kcqe *cqes[1];

	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.pg_host_opaque = req->host_opaque;
	kcqe.pg_cid = req->host_opaque;
	kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
	return 0;
}

static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
	struct l4_kcq kcqe;
	struct kcqe *cqes[1];

	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.pg_host_opaque = req->pg_host_opaque;
	kcqe.pg_cid = req->pg_cid;
	kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
	return 0;
}

M
Michael Chan 已提交
2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263
static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct fcoe_kwqe_stat *req;
	struct fcoe_stat_ramrod_params *fcoe_stat;
	union l5cm_specific_data l5_data;
	struct cnic_local *cp = dev->cnic_priv;
	int ret;
	u32 cid;

	req = (struct fcoe_kwqe_stat *) kwqe;
	cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);

	fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
	if (!fcoe_stat)
		return -ENOMEM;

	memset(fcoe_stat, 0, sizeof(*fcoe_stat));
	memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req));

2264
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
M
Michael Chan 已提交
2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308
				  FCOE_CONNECTION_TYPE, &l5_data);
	return ret;
}

static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[],
				 u32 num, int *work)
{
	int ret;
	struct cnic_local *cp = dev->cnic_priv;
	u32 cid;
	struct fcoe_init_ramrod_params *fcoe_init;
	struct fcoe_kwqe_init1 *req1;
	struct fcoe_kwqe_init2 *req2;
	struct fcoe_kwqe_init3 *req3;
	union l5cm_specific_data l5_data;

	if (num < 3) {
		*work = num;
		return -EINVAL;
	}
	req1 = (struct fcoe_kwqe_init1 *) wqes[0];
	req2 = (struct fcoe_kwqe_init2 *) wqes[1];
	req3 = (struct fcoe_kwqe_init3 *) wqes[2];
	if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) {
		*work = 1;
		return -EINVAL;
	}
	if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) {
		*work = 2;
		return -EINVAL;
	}

	if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) {
		netdev_err(dev->netdev, "fcoe_init size too big\n");
		return -ENOMEM;
	}
	fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data);
	if (!fcoe_init)
		return -ENOMEM;

	memset(fcoe_init, 0, sizeof(*fcoe_init));
	memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
	memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
	memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2309 2310 2311
	fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
	fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
	fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
M
Michael Chan 已提交
2312 2313 2314 2315 2316 2317 2318

	fcoe_init->sb_num = cp->status_blk_num;
	fcoe_init->eq_prod = MAX_KCQ_IDX;
	fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
	cp->kcq2.sw_prod_idx = 0;

	cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2319
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
M
Michael Chan 已提交
2320 2321 2322 2323 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
				  FCOE_CONNECTION_TYPE, &l5_data);
	*work = 3;
	return ret;
}

static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[],
				 u32 num, int *work)
{
	int ret = 0;
	u32 cid = -1, l5_cid;
	struct cnic_local *cp = dev->cnic_priv;
	struct fcoe_kwqe_conn_offload1 *req1;
	struct fcoe_kwqe_conn_offload2 *req2;
	struct fcoe_kwqe_conn_offload3 *req3;
	struct fcoe_kwqe_conn_offload4 *req4;
	struct fcoe_conn_offload_ramrod_params *fcoe_offload;
	struct cnic_context *ctx;
	struct fcoe_context *fctx;
	struct regpair ctx_addr;
	union l5cm_specific_data l5_data;
	struct fcoe_kcqe kcqe;
	struct kcqe *cqes[1];

	if (num < 4) {
		*work = num;
		return -EINVAL;
	}
	req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0];
	req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1];
	req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2];
	req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3];

	*work = 4;

	l5_cid = req1->fcoe_conn_id;
2355
	if (l5_cid >= dev->max_fcoe_conn)
M
Michael Chan 已提交
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
		goto err_reply;

	l5_cid += BNX2X_FCOE_L5_CID_BASE;

	ctx = &cp->ctx_tbl[l5_cid];
	if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
		goto err_reply;

	ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid);
	if (ret) {
		ret = 0;
		goto err_reply;
	}
	cid = ctx->cid;

	fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr);
	if (fctx) {
		u32 hw_cid = BNX2X_HW_CID(cp, cid);
		u32 val;

		val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG,
					     FCOE_CONNECTION_TYPE);
		fctx->xstorm_ag_context.cdu_reserved = val;
		val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG,
					     FCOE_CONNECTION_TYPE);
		fctx->ustorm_ag_context.cdu_usage = val;
	}
	if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) {
		netdev_err(dev->netdev, "fcoe_offload size too big\n");
		goto err_reply;
	}
	fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
	if (!fcoe_offload)
		goto err_reply;

	memset(fcoe_offload, 0, sizeof(*fcoe_offload));
	memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1));
	memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2));
	memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3));
	memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4));

	cid = BNX2X_HW_CID(cp, cid);
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid,
				  FCOE_CONNECTION_TYPE, &l5_data);
	if (!ret)
		set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);

	return ret;

err_reply:
	if (cid != -1)
		cnic_free_bnx2x_conn_resc(dev, l5_cid);

	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN;
	kcqe.fcoe_conn_id = req1->fcoe_conn_id;
	kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;

	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
	return ret;
}

static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct fcoe_kwqe_conn_enable_disable *req;
	struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable;
	union l5cm_specific_data l5_data;
	int ret;
	u32 cid, l5_cid;
	struct cnic_local *cp = dev->cnic_priv;

	req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
	cid = req->context_id;
	l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE;

	if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) {
		netdev_err(dev->netdev, "fcoe_enable size too big\n");
		return -ENOMEM;
	}
	fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
	if (!fcoe_enable)
		return -ENOMEM;

	memset(fcoe_enable, 0, sizeof(*fcoe_enable));
	memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req));
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid,
				  FCOE_CONNECTION_TYPE, &l5_data);
	return ret;
}

static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct fcoe_kwqe_conn_enable_disable *req;
	struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable;
	union l5cm_specific_data l5_data;
	int ret;
	u32 cid, l5_cid;
	struct cnic_local *cp = dev->cnic_priv;

	req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
	cid = req->context_id;
	l5_cid = req->conn_id;
2459
	if (l5_cid >= dev->max_fcoe_conn)
M
Michael Chan 已提交
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		return -EINVAL;

	l5_cid += BNX2X_FCOE_L5_CID_BASE;

	if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) {
		netdev_err(dev->netdev, "fcoe_disable size too big\n");
		return -ENOMEM;
	}
	fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
	if (!fcoe_disable)
		return -ENOMEM;

	memset(fcoe_disable, 0, sizeof(*fcoe_disable));
	memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req));
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid,
				  FCOE_CONNECTION_TYPE, &l5_data);
	return ret;
}

static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct fcoe_kwqe_conn_destroy *req;
	union l5cm_specific_data l5_data;
	int ret;
	u32 cid, l5_cid;
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx;
	struct fcoe_kcqe kcqe;
	struct kcqe *cqes[1];

	req = (struct fcoe_kwqe_conn_destroy *) kwqe;
	cid = req->context_id;
	l5_cid = req->conn_id;
2493
	if (l5_cid >= dev->max_fcoe_conn)
M
Michael Chan 已提交
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		return -EINVAL;

	l5_cid += BNX2X_FCOE_L5_CID_BASE;

	ctx = &cp->ctx_tbl[l5_cid];

	init_waitqueue_head(&ctx->waitq);
	ctx->wait_cond = 0;

2503 2504
	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
M
Michael Chan 已提交
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	memset(&l5_data, 0, sizeof(l5_data));
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
				  FCOE_CONNECTION_TYPE, &l5_data);
	if (ret == 0) {
2509 2510 2511
		wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
		if (ctx->wait_cond)
			kcqe.completion_status = 0;
M
Michael Chan 已提交
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	}

2514 2515 2516
	set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
	queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));

M
Michael Chan 已提交
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	kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN;
	kcqe.fcoe_conn_id = req->conn_id;
	kcqe.fcoe_conn_context_id = cid;

	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1);
	return ret;
}

2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549
static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 i;

	for (i = start_cid; i < cp->max_cid_space; i++) {
		struct cnic_context *ctx = &cp->ctx_tbl[i];
		int j;

		while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
			msleep(10);

		for (j = 0; j < 5; j++) {
			if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
				break;
			msleep(20);
		}

		if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
			netdev_warn(dev->netdev, "CID %x not deleted\n",
				   ctx->cid);
	}
}

M
Michael Chan 已提交
2550 2551 2552 2553 2554 2555 2556 2557
static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct fcoe_kwqe_destroy *req;
	union l5cm_specific_data l5_data;
	struct cnic_local *cp = dev->cnic_priv;
	int ret;
	u32 cid;

2558 2559
	cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);

M
Michael Chan 已提交
2560 2561 2562 2563
	req = (struct fcoe_kwqe_destroy *) kwqe;
	cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);

	memset(&l5_data, 0, sizeof(l5_data));
2564
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
M
Michael Chan 已提交
2565 2566 2567 2568
				  FCOE_CONNECTION_TYPE, &l5_data);
	return ret;
}

2569 2570 2571 2572 2573 2574 2575 2576
static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct kcqe kcqe;
	struct kcqe *cqes[1];
	u32 cid;
	u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
	u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
2577
	u32 kcqe_op;
2578 2579 2580 2581 2582
	int ulp_type;

	cid = kwqe->kwqe_info0;
	memset(&kcqe, 0, sizeof(kcqe));

2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600
	if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
		u32 l5_cid = 0;

		ulp_type = CNIC_ULP_FCOE;
		if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
			struct fcoe_kwqe_conn_enable_disable *req;

			req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
			kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
			cid = req->context_id;
			l5_cid = req->conn_id;
		} else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
			kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
		} else {
			return;
		}
		kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
		kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
2601
		kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2602 2603 2604 2605
		kcqe.kcqe_info2 = cid;
		kcqe.kcqe_info0 = l5_cid;

	} else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2606 2607 2608 2609 2610 2611
		ulp_type = CNIC_ULP_ISCSI;
		if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
			cid = kwqe->kwqe_info1;

		kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
		kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
2612
		kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630
		kcqe.kcqe_info2 = cid;
		cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);

	} else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
		struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;

		ulp_type = CNIC_ULP_L4;
		if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
			kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
		else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
			kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
		else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
			kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
		else
			return;

		kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
				    KCQE_FLAGS_LAYER_MASK_L4;
2631
		l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2632 2633 2634 2635 2636 2637
		l4kcqe->cid = cid;
		cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
	} else {
		return;
	}

2638
	cqes[0] = &kcqe;
2639 2640 2641
	cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
}

M
Michael Chan 已提交
2642 2643
static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
					 struct kwqe *wqes[], u32 num_wqes)
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 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694
{
	int i, work, ret;
	u32 opcode;
	struct kwqe *kwqe;

	if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
		return -EAGAIN;		/* bnx2 is down */

	for (i = 0; i < num_wqes; ) {
		kwqe = wqes[i];
		opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
		work = 1;

		switch (opcode) {
		case ISCSI_KWQE_OPCODE_INIT1:
			ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
			break;
		case ISCSI_KWQE_OPCODE_INIT2:
			ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
			break;
		case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
			ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
						     num_wqes - i, &work);
			break;
		case ISCSI_KWQE_OPCODE_UPDATE_CONN:
			ret = cnic_bnx2x_iscsi_update(dev, kwqe);
			break;
		case ISCSI_KWQE_OPCODE_DESTROY_CONN:
			ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
			break;
		case L4_KWQE_OPCODE_VALUE_CONNECT1:
			ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
						 &work);
			break;
		case L4_KWQE_OPCODE_VALUE_CLOSE:
			ret = cnic_bnx2x_close(dev, kwqe);
			break;
		case L4_KWQE_OPCODE_VALUE_RESET:
			ret = cnic_bnx2x_reset(dev, kwqe);
			break;
		case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
			ret = cnic_bnx2x_offload_pg(dev, kwqe);
			break;
		case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
			ret = cnic_bnx2x_update_pg(dev, kwqe);
			break;
		case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
			ret = 0;
			break;
		default:
			ret = 0;
2695 2696
			netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
				   opcode);
2697 2698
			break;
		}
2699
		if (ret < 0) {
2700 2701
			netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
				   opcode);
2702 2703 2704 2705 2706 2707 2708 2709

			/* Possibly bnx2x parity error, send completion
			 * to ulp drivers with error code to speed up
			 * cleanup and reset recovery.
			 */
			if (ret == -EIO || ret == -EAGAIN)
				cnic_bnx2x_kwqe_err(dev, kwqe);
		}
2710 2711 2712 2713 2714
		i += work;
	}
	return 0;
}

M
Michael Chan 已提交
2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725
static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
					struct kwqe *wqes[], u32 num_wqes)
{
	struct cnic_local *cp = dev->cnic_priv;
	int i, work, ret;
	u32 opcode;
	struct kwqe *kwqe;

	if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
		return -EAGAIN;		/* bnx2 is down */

2726
	if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
M
Michael Chan 已提交
2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763
		return -EINVAL;

	for (i = 0; i < num_wqes; ) {
		kwqe = wqes[i];
		opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
		work = 1;

		switch (opcode) {
		case FCOE_KWQE_OPCODE_INIT1:
			ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
						    num_wqes - i, &work);
			break;
		case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
			ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
						    num_wqes - i, &work);
			break;
		case FCOE_KWQE_OPCODE_ENABLE_CONN:
			ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_DISABLE_CONN:
			ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_DESTROY_CONN:
			ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_DESTROY:
			ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_STAT:
			ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
			break;
		default:
			ret = 0;
			netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
				   opcode);
			break;
		}
2764
		if (ret < 0) {
M
Michael Chan 已提交
2765 2766
			netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
				   opcode);
2767 2768 2769 2770 2771 2772 2773 2774

			/* Possibly bnx2x parity error, send completion
			 * to ulp drivers with error code to speed up
			 * cleanup and reset recovery.
			 */
			if (ret == -EIO || ret == -EAGAIN)
				cnic_bnx2x_kwqe_err(dev, kwqe);
		}
M
Michael Chan 已提交
2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814
		i += work;
	}
	return 0;
}

static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
				   u32 num_wqes)
{
	int ret = -EINVAL;
	u32 layer_code;

	if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
		return -EAGAIN;		/* bnx2x is down */

	if (!num_wqes)
		return 0;

	layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK;
	switch (layer_code) {
	case KWQE_FLAGS_LAYER_MASK_L5_ISCSI:
	case KWQE_FLAGS_LAYER_MASK_L4:
	case KWQE_FLAGS_LAYER_MASK_L2:
		ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes);
		break;

	case KWQE_FLAGS_LAYER_MASK_L5_FCOE:
		ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes);
		break;
	}
	return ret;
}

static inline u32 cnic_get_kcqe_layer_mask(u32 opflag)
{
	if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN))
		return KCQE_FLAGS_LAYER_MASK_L4;

	return opflag & KCQE_FLAGS_LAYER_MASK;
}

2815 2816 2817
static void service_kcqes(struct cnic_dev *dev, int num_cqes)
{
	struct cnic_local *cp = dev->cnic_priv;
2818
	int i, j, comp = 0;
2819 2820 2821 2822 2823 2824 2825

	i = 0;
	j = 1;
	while (num_cqes) {
		struct cnic_ulp_ops *ulp_ops;
		int ulp_type;
		u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
M
Michael Chan 已提交
2826
		u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2827 2828

		if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2829
			comp++;
2830 2831 2832 2833

		while (j < num_cqes) {
			u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;

M
Michael Chan 已提交
2834
			if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2835 2836 2837
				break;

			if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2838
				comp++;
2839 2840 2841 2842 2843 2844 2845
			j++;
		}

		if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
			ulp_type = CNIC_ULP_RDMA;
		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
			ulp_type = CNIC_ULP_ISCSI;
M
Michael Chan 已提交
2846 2847
		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
			ulp_type = CNIC_ULP_FCOE;
2848 2849 2850 2851 2852
		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
			ulp_type = CNIC_ULP_L4;
		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
			goto end;
		else {
2853 2854
			netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
				   kcqe_op_flag);
2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869
			goto end;
		}

		rcu_read_lock();
		ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
		if (likely(ulp_ops)) {
			ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
						  cp->completed_kcq + i, j);
		}
		rcu_read_unlock();
end:
		num_cqes -= j;
		i += j;
		j = 1;
	}
2870 2871
	if (unlikely(comp))
		cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2872 2873
}

M
Michael Chan 已提交
2874
static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2875 2876
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
2877
	u16 i, ri, hw_prod, last;
2878 2879 2880
	struct kcqe *kcqe;
	int kcqe_cnt = 0, last_cnt = 0;

M
Michael Chan 已提交
2881
	i = ri = last = info->sw_prod_idx;
2882
	ri &= MAX_KCQ_IDX;
M
Michael Chan 已提交
2883
	hw_prod = *info->hw_prod_idx_ptr;
2884
	hw_prod = info->hw_idx(hw_prod);
2885 2886

	while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
M
Michael Chan 已提交
2887
		kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2888
		cp->completed_kcq[kcqe_cnt++] = kcqe;
2889
		i = info->next_idx(i);
2890 2891 2892 2893 2894 2895 2896
		ri = i & MAX_KCQ_IDX;
		if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
			last_cnt = kcqe_cnt;
			last = i;
		}
	}

M
Michael Chan 已提交
2897
	info->sw_prod_idx = last;
2898 2899 2900
	return last_cnt;
}

2901 2902 2903
static int cnic_l2_completion(struct cnic_local *cp)
{
	u16 hw_cons, sw_cons;
M
Michael Chan 已提交
2904
	struct cnic_uio_dev *udev = cp->udev;
2905
	union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2906
					(udev->l2_ring + (2 * BNX2_PAGE_SIZE));
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
	u32 cmd;
	int comp = 0;

	if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags))
		return 0;

	hw_cons = *cp->rx_cons_ptr;
	if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT)
		hw_cons++;

	sw_cons = cp->rx_cons;
	while (sw_cons != hw_cons) {
		u8 cqe_fp_flags;

		cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT];
		cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;
		if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) {
			cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data);
			cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT;
			if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP ||
			    cmd == RAMROD_CMD_ID_ETH_HALT)
				comp++;
		}
		sw_cons = BNX2X_NEXT_RCQE(sw_cons);
	}
	return comp;
}

M
Michael Chan 已提交
2935
static void cnic_chk_pkt_rings(struct cnic_local *cp)
2936
{
M
Michael Chan 已提交
2937
	u16 rx_cons, tx_cons;
2938
	int comp = 0;
2939

M
Michael Chan 已提交
2940
	if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2941 2942
		return;

M
Michael Chan 已提交
2943 2944
	rx_cons = *cp->rx_cons_ptr;
	tx_cons = *cp->tx_cons_ptr;
2945
	if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2946 2947 2948
		if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
			comp = cnic_l2_completion(cp);

2949 2950
		cp->tx_cons = tx_cons;
		cp->rx_cons = rx_cons;
2951

M
Michael Chan 已提交
2952 2953
		if (cp->udev)
			uio_event_notify(&cp->udev->cnic_uinfo);
2954
	}
2955 2956
	if (comp)
		clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2957 2958
}

2959
static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2960 2961
{
	struct cnic_local *cp = dev->cnic_priv;
2962
	u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2963 2964
	int kcqe_cnt;

2965 2966
	/* status block index must be read before reading other fields */
	rmb();
2967 2968
	cp->kwq_con_idx = *cp->kwq_con_idx_ptr;

M
Michael Chan 已提交
2969
	while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2970 2971 2972 2973 2974

		service_kcqes(dev, kcqe_cnt);

		/* Tell compiler that status_blk fields can change. */
		barrier();
M
Michael Chan 已提交
2975 2976 2977 2978
		status_idx = (u16) *cp->kcq1.status_idx_ptr;
		/* status block index must be read first */
		rmb();
		cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2979 2980
	}

M
Michael Chan 已提交
2981
	CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2982

M
Michael Chan 已提交
2983
	cnic_chk_pkt_rings(cp);
2984

2985 2986 2987
	return status_idx;
}

2988
static int cnic_service_bnx2(void *data, void *status_blk)
2989
{
2990
	struct cnic_dev *dev = data;
2991

2992 2993 2994 2995 2996
	if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
		struct status_block *sblk = status_blk;

		return sblk->status_idx;
	}
2997

2998 2999
	return cnic_service_bnx2_queues(dev);
}
3000

3001 3002 3003 3004
static void cnic_service_bnx2_msix(unsigned long data)
{
	struct cnic_dev *dev = (struct cnic_dev *) data;
	struct cnic_local *cp = dev->cnic_priv;
3005

3006
	cp->last_status_idx = cnic_service_bnx2_queues(dev);
3007 3008 3009 3010 3011

	CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
		BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
}

3012 3013 3014 3015 3016
static void cnic_doirq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

	if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
3017 3018
		u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;

3019
		prefetch(cp->status_blk.gen);
3020
		prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
3021 3022 3023 3024 3025

		tasklet_schedule(&cp->cnic_irq_task);
	}
}

3026 3027 3028 3029 3030 3031 3032 3033
static irqreturn_t cnic_irq(int irq, void *dev_instance)
{
	struct cnic_dev *dev = dev_instance;
	struct cnic_local *cp = dev->cnic_priv;

	if (cp->ack_int)
		cp->ack_int(dev);

3034
	cnic_doirq(dev);
3035 3036 3037 3038

	return IRQ_HANDLED;
}

3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056
static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
				      u16 index, u8 op, u8 update)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
		       COMMAND_REG_INT_ACK);
	struct igu_ack_register igu_ack;

	igu_ack.status_block_index = index;
	igu_ack.sb_id_and_flags =
			((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
			 (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
			 (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
			 (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));

	CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
}

M
Michael Chan 已提交
3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072
static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
			    u16 index, u8 op, u8 update)
{
	struct igu_regular cmd_data;
	u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;

	cmd_data.sb_id_and_flags =
		(index << IGU_REGULAR_SB_INDEX_SHIFT) |
		(segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) |
		(update << IGU_REGULAR_BUPDATE_SHIFT) |
		(op << IGU_REGULAR_ENABLE_INT_SHIFT);


	CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags);
}

3073 3074 3075 3076
static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

3077
	cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3078 3079 3080
			   IGU_INT_DISABLE, 0);
}

M
Michael Chan 已提交
3081 3082 3083 3084 3085 3086 3087 3088
static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

	cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0,
			IGU_INT_DISABLE, 0);
}

3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104
static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
{
	struct cnic_local *cp = dev->cnic_priv;

	cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
			   IGU_INT_ENABLE, 1);
}

static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
{
	struct cnic_local *cp = dev->cnic_priv;

	cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
			IGU_INT_ENABLE, 1);
}

3105
static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3106
{
3107
	u32 last_status = *info->status_idx_ptr;
3108 3109
	int kcqe_cnt;

3110 3111
	/* status block index must be read before reading the KCQ */
	rmb();
3112
	while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3113 3114 3115 3116 3117 3118

		service_kcqes(dev, kcqe_cnt);

		/* Tell compiler that sblk fields can change. */
		barrier();

3119
		last_status = *info->status_idx_ptr;
3120 3121
		/* status block index must be read before reading the KCQ */
		rmb();
3122
	}
3123 3124 3125 3126 3127 3128 3129
	return last_status;
}

static void cnic_service_bnx2x_bh(unsigned long data)
{
	struct cnic_dev *dev = (struct cnic_dev *) data;
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
3130
	u32 status_idx, new_status_idx;
3131 3132 3133 3134

	if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
		return;

M
Michael Chan 已提交
3135 3136
	while (1) {
		status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3137

M
Michael Chan 已提交
3138 3139
		CNIC_WR16(dev, cp->kcq1.io_addr,
			  cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
M
Michael Chan 已提交
3140

3141
		if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE) {
3142
			cp->arm_int(dev, status_idx);
M
Michael Chan 已提交
3143 3144 3145 3146 3147 3148 3149
			break;
		}

		new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);

		if (new_status_idx != status_idx)
			continue;
M
Michael Chan 已提交
3150 3151 3152 3153

		CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
			  MAX_KCQ_IDX);

M
Michael Chan 已提交
3154 3155
		cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
				status_idx, IGU_INT_ENABLE, 1);
M
Michael Chan 已提交
3156 3157

		break;
M
Michael Chan 已提交
3158
	}
3159 3160 3161 3162 3163 3164 3165
}

static int cnic_service_bnx2x(void *data, void *status_blk)
{
	struct cnic_dev *dev = data;
	struct cnic_local *cp = dev->cnic_priv;

3166 3167
	if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
		cnic_doirq(dev);
3168

3169
	cnic_chk_pkt_rings(cp);
3170 3171 3172 3173

	return 0;
}

3174
static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3175
{
3176
	struct cnic_ulp_ops *ulp_ops;
3177

3178 3179
	if (if_type == CNIC_ULP_ISCSI)
		cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3180

3181 3182 3183 3184
	mutex_lock(&cnic_lock);
	ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
					    lockdep_is_held(&cnic_lock));
	if (!ulp_ops) {
3185
		mutex_unlock(&cnic_lock);
3186 3187 3188 3189
		return;
	}
	set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
	mutex_unlock(&cnic_lock);
3190

3191 3192
	if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
		ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3193

3194 3195 3196 3197 3198 3199 3200 3201 3202 3203
	clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
}

static void cnic_ulp_stop(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int if_type;

	for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
		cnic_ulp_stop_one(cp, if_type);
3204 3205 3206 3207 3208 3209 3210 3211 3212 3213
}

static void cnic_ulp_start(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int if_type;

	for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
		struct cnic_ulp_ops *ulp_ops;

3214
		mutex_lock(&cnic_lock);
3215 3216
		ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
						    lockdep_is_held(&cnic_lock));
3217 3218
		if (!ulp_ops || !ulp_ops->cnic_start) {
			mutex_unlock(&cnic_lock);
3219
			continue;
3220 3221 3222
		}
		set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
		mutex_unlock(&cnic_lock);
3223 3224 3225

		if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
			ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3226 3227

		clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3228 3229 3230
	}
}

3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246
static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_ulp_ops *ulp_ops;
	int rc;

	mutex_lock(&cnic_lock);
	ulp_ops = cnic_ulp_tbl_prot(ulp_type);
	if (ulp_ops && ulp_ops->cnic_get_stats)
		rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]);
	else
		rc = -ENODEV;
	mutex_unlock(&cnic_lock);
	return rc;
}

3247 3248 3249
static int cnic_ctl(void *data, struct cnic_ctl_info *info)
{
	struct cnic_dev *dev = data;
3250
	int ulp_type = CNIC_ULP_ISCSI;
3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268

	switch (info->cmd) {
	case CNIC_CTL_STOP_CMD:
		cnic_hold(dev);

		cnic_ulp_stop(dev);
		cnic_stop_hw(dev);

		cnic_put(dev);
		break;
	case CNIC_CTL_START_CMD:
		cnic_hold(dev);

		if (!cnic_start_hw(dev))
			cnic_ulp_start(dev);

		cnic_put(dev);
		break;
3269 3270 3271 3272 3273 3274
	case CNIC_CTL_STOP_ISCSI_CMD: {
		struct cnic_local *cp = dev->cnic_priv;
		set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
		queue_delayed_work(cnic_wq, &cp->delete_task, 0);
		break;
	}
3275
	case CNIC_CTL_COMPLETION_CMD: {
3276 3277
		struct cnic_ctl_completion *comp = &info->data.comp;
		u32 cid = BNX2X_SW_CID(comp->cid);
3278 3279 3280
		u32 l5_cid;
		struct cnic_local *cp = dev->cnic_priv;

3281 3282 3283
		if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
			break;

3284 3285 3286
		if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
			struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

3287 3288 3289 3290 3291 3292 3293
			if (unlikely(comp->error)) {
				set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
				netdev_err(dev->netdev,
					   "CID %x CFC delete comp error %x\n",
					   cid, comp->error);
			}

3294 3295 3296 3297 3298
			ctx->wait_cond = 1;
			wake_up(&ctx->waitq);
		}
		break;
	}
3299 3300 3301 3302 3303 3304 3305 3306 3307
	case CNIC_CTL_FCOE_STATS_GET_CMD:
		ulp_type = CNIC_ULP_FCOE;
		/* fall through */
	case CNIC_CTL_ISCSI_STATS_GET_CMD:
		cnic_hold(dev);
		cnic_copy_ulp_stats(dev, ulp_type);
		cnic_put(dev);
		break;

3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321
	default:
		return -EINVAL;
	}
	return 0;
}

static void cnic_ulp_init(struct cnic_dev *dev)
{
	int i;
	struct cnic_local *cp = dev->cnic_priv;

	for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
		struct cnic_ulp_ops *ulp_ops;

3322
		mutex_lock(&cnic_lock);
3323
		ulp_ops = cnic_ulp_tbl_prot(i);
3324 3325
		if (!ulp_ops || !ulp_ops->cnic_init) {
			mutex_unlock(&cnic_lock);
3326
			continue;
3327 3328 3329
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
3330 3331 3332 3333

		if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
			ulp_ops->cnic_init(dev);

3334
		ulp_put(ulp_ops);
3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345
	}
}

static void cnic_ulp_exit(struct cnic_dev *dev)
{
	int i;
	struct cnic_local *cp = dev->cnic_priv;

	for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
		struct cnic_ulp_ops *ulp_ops;

3346
		mutex_lock(&cnic_lock);
3347
		ulp_ops = cnic_ulp_tbl_prot(i);
3348 3349
		if (!ulp_ops || !ulp_ops->cnic_exit) {
			mutex_unlock(&cnic_lock);
3350
			continue;
3351 3352 3353
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
3354 3355 3356 3357

		if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
			ulp_ops->cnic_exit(dev);

3358
		ulp_put(ulp_ops);
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 3391
	}
}

static int cnic_cm_offload_pg(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_offload_pg *l4kwqe;
	struct kwqe *wqes[1];

	l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
	memset(l4kwqe, 0, sizeof(*l4kwqe));
	wqes[0] = (struct kwqe *) l4kwqe;

	l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
	l4kwqe->flags =
		L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
	l4kwqe->l2hdr_nbytes = ETH_HLEN;

	l4kwqe->da0 = csk->ha[0];
	l4kwqe->da1 = csk->ha[1];
	l4kwqe->da2 = csk->ha[2];
	l4kwqe->da3 = csk->ha[3];
	l4kwqe->da4 = csk->ha[4];
	l4kwqe->da5 = csk->ha[5];

	l4kwqe->sa0 = dev->mac_addr[0];
	l4kwqe->sa1 = dev->mac_addr[1];
	l4kwqe->sa2 = dev->mac_addr[2];
	l4kwqe->sa3 = dev->mac_addr[3];
	l4kwqe->sa4 = dev->mac_addr[4];
	l4kwqe->sa5 = dev->mac_addr[5];

	l4kwqe->etype = ETH_P_IP;
3392
	l4kwqe->ipid_start = DEF_IPID_START;
3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 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 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 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
	l4kwqe->host_opaque = csk->l5_cid;

	if (csk->vlan_id) {
		l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING;
		l4kwqe->vlan_tag = csk->vlan_id;
		l4kwqe->l2hdr_nbytes += 4;
	}

	return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_update_pg(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_update_pg *l4kwqe;
	struct kwqe *wqes[1];

	l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1;
	memset(l4kwqe, 0, sizeof(*l4kwqe));
	wqes[0] = (struct kwqe *) l4kwqe;

	l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG;
	l4kwqe->flags =
		L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT;
	l4kwqe->pg_cid = csk->pg_cid;

	l4kwqe->da0 = csk->ha[0];
	l4kwqe->da1 = csk->ha[1];
	l4kwqe->da2 = csk->ha[2];
	l4kwqe->da3 = csk->ha[3];
	l4kwqe->da4 = csk->ha[4];
	l4kwqe->da5 = csk->ha[5];

	l4kwqe->pg_host_opaque = csk->l5_cid;
	l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA;

	return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_upload_pg(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_upload *l4kwqe;
	struct kwqe *wqes[1];

	l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1;
	memset(l4kwqe, 0, sizeof(*l4kwqe));
	wqes[0] = (struct kwqe *) l4kwqe;

	l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG;
	l4kwqe->flags =
		L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT;
	l4kwqe->cid = csk->pg_cid;

	return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_conn_req(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_connect_req1 *l4kwqe1;
	struct l4_kwq_connect_req2 *l4kwqe2;
	struct l4_kwq_connect_req3 *l4kwqe3;
	struct kwqe *wqes[3];
	u8 tcp_flags = 0;
	int num_wqes = 2;

	l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1;
	l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2;
	l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3;
	memset(l4kwqe1, 0, sizeof(*l4kwqe1));
	memset(l4kwqe2, 0, sizeof(*l4kwqe2));
	memset(l4kwqe3, 0, sizeof(*l4kwqe3));

	l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3;
	l4kwqe3->flags =
		L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT;
	l4kwqe3->ka_timeout = csk->ka_timeout;
	l4kwqe3->ka_interval = csk->ka_interval;
	l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count;
	l4kwqe3->tos = csk->tos;
	l4kwqe3->ttl = csk->ttl;
	l4kwqe3->snd_seq_scale = csk->snd_seq_scale;
	l4kwqe3->pmtu = csk->mtu;
	l4kwqe3->rcv_buf = csk->rcv_buf;
	l4kwqe3->snd_buf = csk->snd_buf;
	l4kwqe3->seed = csk->seed;

	wqes[0] = (struct kwqe *) l4kwqe1;
	if (test_bit(SK_F_IPV6, &csk->flags)) {
		wqes[1] = (struct kwqe *) l4kwqe2;
		wqes[2] = (struct kwqe *) l4kwqe3;
		num_wqes = 3;

		l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6;
		l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2;
		l4kwqe2->flags =
			L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT |
			L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT;
		l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]);
		l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]);
		l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]);
		l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]);
		l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]);
		l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]);
		l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) -
			       sizeof(struct tcphdr);
	} else {
		wqes[1] = (struct kwqe *) l4kwqe3;
		l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) -
			       sizeof(struct tcphdr);
	}

	l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1;
	l4kwqe1->flags =
		(L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) |
		 L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT;
	l4kwqe1->cid = csk->cid;
	l4kwqe1->pg_cid = csk->pg_cid;
	l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]);
	l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]);
	l4kwqe1->src_port = be16_to_cpu(csk->src_port);
	l4kwqe1->dst_port = be16_to_cpu(csk->dst_port);
	if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK;
	if (csk->tcp_flags & SK_TCP_KEEP_ALIVE)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE;
	if (csk->tcp_flags & SK_TCP_NAGLE)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE;
	if (csk->tcp_flags & SK_TCP_TIMESTAMP)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP;
	if (csk->tcp_flags & SK_TCP_SACK)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK;
	if (csk->tcp_flags & SK_TCP_SEG_SCALING)
		tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING;

	l4kwqe1->tcp_flags = tcp_flags;

	return dev->submit_kwqes(dev, wqes, num_wqes);
}

static int cnic_cm_close_req(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_close_req *l4kwqe;
	struct kwqe *wqes[1];

	l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2;
	memset(l4kwqe, 0, sizeof(*l4kwqe));
	wqes[0] = (struct kwqe *) l4kwqe;

	l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE;
	l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT;
	l4kwqe->cid = csk->cid;

	return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_abort_req(struct cnic_sock *csk)
{
	struct cnic_dev *dev = csk->dev;
	struct l4_kwq_reset_req *l4kwqe;
	struct kwqe *wqes[1];

	l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2;
	memset(l4kwqe, 0, sizeof(*l4kwqe));
	wqes[0] = (struct kwqe *) l4kwqe;

	l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET;
	l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT;
	l4kwqe->cid = csk->cid;

	return dev->submit_kwqes(dev, wqes, 1);
}

static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid,
			  u32 l5_cid, struct cnic_sock **csk, void *context)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_sock *csk1;

	if (l5_cid >= MAX_CM_SK_TBL_SZ)
		return -EINVAL;

3577 3578 3579 3580 3581 3582 3583
	if (cp->ctx_tbl) {
		struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

		if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags))
			return -EAGAIN;
	}

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
	csk1 = &cp->csk_tbl[l5_cid];
	if (atomic_read(&csk1->ref_count))
		return -EAGAIN;

	if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
		return -EBUSY;

	csk1->dev = dev;
	csk1->cid = cid;
	csk1->l5_cid = l5_cid;
	csk1->ulp_type = ulp_type;
	csk1->context = context;

	csk1->ka_timeout = DEF_KA_TIMEOUT;
	csk1->ka_interval = DEF_KA_INTERVAL;
	csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
	csk1->tos = DEF_TOS;
	csk1->ttl = DEF_TTL;
	csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
	csk1->rcv_buf = DEF_RCV_BUF;
	csk1->snd_buf = DEF_SND_BUF;
	csk1->seed = DEF_SEED;

	*csk = csk1;
	return 0;
}

static void cnic_cm_cleanup(struct cnic_sock *csk)
{
	if (csk->src_port) {
		struct cnic_dev *dev = csk->dev;
		struct cnic_local *cp = dev->cnic_priv;

3617
		cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3618 3619 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
		csk->src_port = 0;
	}
}

static void cnic_close_conn(struct cnic_sock *csk)
{
	if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
		cnic_cm_upload_pg(csk);
		clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
	}
	cnic_cm_cleanup(csk);
}

static int cnic_cm_destroy(struct cnic_sock *csk)
{
	if (!cnic_in_use(csk))
		return -EINVAL;

	csk_hold(csk);
	clear_bit(SK_F_INUSE, &csk->flags);
	smp_mb__after_clear_bit();
	while (atomic_read(&csk->ref_count) != 1)
		msleep(1);
	cnic_cm_cleanup(csk);

	csk->flags = 0;
	csk_put(csk);
	return 0;
}

static inline u16 cnic_get_vlan(struct net_device *dev,
				struct net_device **vlan_dev)
{
	if (dev->priv_flags & IFF_802_1Q_VLAN) {
		*vlan_dev = vlan_dev_real_dev(dev);
		return vlan_dev_vlan_id(dev);
	}
	*vlan_dev = dev;
	return 0;
}

static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
			     struct dst_entry **dst)
{
3662
#if defined(CONFIG_INET)
3663 3664
	struct rtable *rt;

3665 3666
	rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
	if (!IS_ERR(rt)) {
3667
		*dst = &rt->dst;
3668 3669 3670
		return 0;
	}
	return PTR_ERR(rt);
3671 3672 3673
#else
	return -ENETUNREACH;
#endif
3674 3675 3676 3677 3678
}

static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
			     struct dst_entry **dst)
{
3679
#if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3680
	struct flowi6 fl6;
3681

3682
	memset(&fl6, 0, sizeof(fl6));
A
Alexey Dobriyan 已提交
3683
	fl6.daddr = dst_addr->sin6_addr;
3684 3685
	if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
		fl6.flowi6_oif = dst_addr->sin6_scope_id;
3686

3687
	*dst = ip6_route_output(&init_net, NULL, &fl6);
3688 3689 3690 3691 3692
	if ((*dst)->error) {
		dst_release(*dst);
		*dst = NULL;
		return -ENETUNREACH;
	} else
3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745
		return 0;
#endif

	return -ENETUNREACH;
}

static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
					   int ulp_type)
{
	struct cnic_dev *dev = NULL;
	struct dst_entry *dst;
	struct net_device *netdev = NULL;
	int err = -ENETUNREACH;

	if (dst_addr->sin_family == AF_INET)
		err = cnic_get_v4_route(dst_addr, &dst);
	else if (dst_addr->sin_family == AF_INET6) {
		struct sockaddr_in6 *dst_addr6 =
			(struct sockaddr_in6 *) dst_addr;

		err = cnic_get_v6_route(dst_addr6, &dst);
	} else
		return NULL;

	if (err)
		return NULL;

	if (!dst->dev)
		goto done;

	cnic_get_vlan(dst->dev, &netdev);

	dev = cnic_from_netdev(netdev);

done:
	dst_release(dst);
	if (dev)
		cnic_put(dev);
	return dev;
}

static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
	struct cnic_dev *dev = csk->dev;
	struct cnic_local *cp = dev->cnic_priv;

	return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
}

static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
	struct cnic_dev *dev = csk->dev;
	struct cnic_local *cp = dev->cnic_priv;
3746 3747
	int is_v6, rc = 0;
	struct dst_entry *dst = NULL;
3748
	struct net_device *realdev;
3749 3750
	__be16 local_port;
	u32 port_id;
3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764

	if (saddr->local.v6.sin6_family == AF_INET6 &&
	    saddr->remote.v6.sin6_family == AF_INET6)
		is_v6 = 1;
	else if (saddr->local.v4.sin_family == AF_INET &&
		 saddr->remote.v4.sin_family == AF_INET)
		is_v6 = 0;
	else
		return -EINVAL;

	clear_bit(SK_F_IPV6, &csk->flags);

	if (is_v6) {
		set_bit(SK_F_IPV6, &csk->flags);
3765
		cnic_get_v6_route(&saddr->remote.v6, &dst);
3766 3767 3768 3769 3770 3771 3772

		memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr,
		       sizeof(struct in6_addr));
		csk->dst_port = saddr->remote.v6.sin6_port;
		local_port = saddr->local.v6.sin6_port;

	} else {
3773
		cnic_get_v4_route(&saddr->remote.v4, &dst);
3774 3775 3776 3777 3778 3779

		csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr;
		csk->dst_port = saddr->remote.v4.sin_port;
		local_port = saddr->local.v4.sin_port;
	}

3780 3781 3782 3783 3784 3785 3786 3787 3788
	csk->vlan_id = 0;
	csk->mtu = dev->netdev->mtu;
	if (dst && dst->dev) {
		u16 vlan = cnic_get_vlan(dst->dev, &realdev);
		if (realdev == dev->netdev) {
			csk->vlan_id = vlan;
			csk->mtu = dst_mtu(dst);
		}
	}
3789

3790 3791 3792 3793 3794
	port_id = be16_to_cpu(local_port);
	if (port_id >= CNIC_LOCAL_PORT_MIN &&
	    port_id < CNIC_LOCAL_PORT_MAX) {
		if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
			port_id = 0;
3795
	} else
3796
		port_id = 0;
3797

3798 3799 3800
	if (!port_id) {
		port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
		if (port_id == -1) {
3801 3802 3803
			rc = -ENOMEM;
			goto err_out;
		}
3804
		local_port = cpu_to_be16(port_id);
3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821
	}
	csk->src_port = local_port;

err_out:
	dst_release(dst);
	return rc;
}

static void cnic_init_csk_state(struct cnic_sock *csk)
{
	csk->state = 0;
	clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
	clear_bit(SK_F_CLOSING, &csk->flags);
}

static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
3822
	struct cnic_local *cp = csk->dev->cnic_priv;
3823 3824
	int err = 0;

3825 3826 3827
	if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
		return -EOPNOTSUPP;

3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851
	if (!cnic_in_use(csk))
		return -EINVAL;

	if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
		return -EINVAL;

	cnic_init_csk_state(csk);

	err = cnic_get_route(csk, saddr);
	if (err)
		goto err_out;

	err = cnic_resolve_addr(csk, saddr);
	if (!err)
		return 0;

err_out:
	clear_bit(SK_F_CONNECT_START, &csk->flags);
	return err;
}

static int cnic_cm_abort(struct cnic_sock *csk)
{
	struct cnic_local *cp = csk->dev->cnic_priv;
3852
	u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3853 3854 3855 3856 3857 3858 3859 3860

	if (!cnic_in_use(csk))
		return -EINVAL;

	if (cnic_abort_prep(csk))
		return cnic_cm_abort_req(csk);

	/* Getting here means that we haven't started connect, or
3861
	 * connect was not successful, or it has been reset by the target.
3862 3863 3864
	 */

	cp->close_conn(csk, opcode);
3865 3866 3867 3868 3869
	if (csk->state != opcode) {
		/* Wait for remote reset sequence to complete */
		while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
			msleep(1);

3870
		return -EALREADY;
3871
	}
3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883

	return 0;
}

static int cnic_cm_close(struct cnic_sock *csk)
{
	if (!cnic_in_use(csk))
		return -EINVAL;

	if (cnic_close_prep(csk)) {
		csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
		return cnic_cm_close_req(csk);
3884
	} else {
3885 3886 3887 3888
		/* Wait for remote reset sequence to complete */
		while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
			msleep(1);

3889
		return -EALREADY;
3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942
	}
	return 0;
}

static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk,
			   u8 opcode)
{
	struct cnic_ulp_ops *ulp_ops;
	int ulp_type = csk->ulp_type;

	rcu_read_lock();
	ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
	if (ulp_ops) {
		if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE)
			ulp_ops->cm_connect_complete(csk);
		else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
			ulp_ops->cm_close_complete(csk);
		else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED)
			ulp_ops->cm_remote_abort(csk);
		else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP)
			ulp_ops->cm_abort_complete(csk);
		else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED)
			ulp_ops->cm_remote_close(csk);
	}
	rcu_read_unlock();
}

static int cnic_cm_set_pg(struct cnic_sock *csk)
{
	if (cnic_offld_prep(csk)) {
		if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
			cnic_cm_update_pg(csk);
		else
			cnic_cm_offload_pg(csk);
	}
	return 0;
}

static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 l5_cid = kcqe->pg_host_opaque;
	u8 opcode = kcqe->op_code;
	struct cnic_sock *csk = &cp->csk_tbl[l5_cid];

	csk_hold(csk);
	if (!cnic_in_use(csk))
		goto done;

	if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
		clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
		goto done;
	}
3943 3944 3945 3946 3947 3948 3949 3950
	/* Possible PG kcqe status:  SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */
	if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) {
		clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
		cnic_cm_upcall(cp, csk,
			       L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
		goto done;
	}

3951 3952 3953 3954 3955 3956 3957 3958
	csk->pg_cid = kcqe->pg_cid;
	set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
	cnic_cm_conn_req(csk);

done:
	csk_put(csk);
}

M
Michael Chan 已提交
3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970
static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
	u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

	ctx->timestamp = jiffies;
	ctx->wait_cond = 1;
	wake_up(&ctx->waitq);
}

3971 3972 3973 3974 3975 3976 3977 3978
static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
	u8 opcode = l4kcqe->op_code;
	u32 l5_cid;
	struct cnic_sock *csk;

M
Michael Chan 已提交
3979 3980 3981 3982
	if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
		cnic_process_fcoe_term_conn(dev, kcqe);
		return;
	}
3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003
	if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
	    opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
		cnic_cm_process_offld_pg(dev, l4kcqe);
		return;
	}

	l5_cid = l4kcqe->conn_id;
	if (opcode & 0x80)
		l5_cid = l4kcqe->cid;
	if (l5_cid >= MAX_CM_SK_TBL_SZ)
		return;

	csk = &cp->csk_tbl[l5_cid];
	csk_hold(csk);

	if (!cnic_in_use(csk)) {
		csk_put(csk);
		return;
	}

	switch (opcode) {
4004 4005 4006 4007 4008 4009 4010
	case L5CM_RAMROD_CMD_ID_TCP_CONNECT:
		if (l4kcqe->status != 0) {
			clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
			cnic_cm_upcall(cp, csk,
				       L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE);
		}
		break;
4011 4012 4013
	case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
		if (l4kcqe->status == 0)
			set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
4014 4015
		else if (l4kcqe->status ==
			 L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4016
			set_bit(SK_F_HW_ERR, &csk->flags);
4017 4018 4019 4020 4021 4022

		smp_mb__before_clear_bit();
		clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
		cnic_cm_upcall(cp, csk, opcode);
		break;

4023 4024 4025 4026 4027 4028 4029 4030 4031
	case L5CM_RAMROD_CMD_ID_CLOSE:
		if (l4kcqe->status != 0) {
			netdev_warn(dev->netdev, "RAMROD CLOSE compl with "
				    "status 0x%x\n", l4kcqe->status);
			opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
			/* Fall through */
		} else {
			break;
		}
4032 4033 4034
	case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
	case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
	case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4035 4036
	case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
	case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
4037
		if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
4038 4039
			set_bit(SK_F_HW_ERR, &csk->flags);

4040 4041 4042 4043
		cp->close_conn(csk, opcode);
		break;

	case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
4044 4045 4046 4047 4048 4049 4050
		/* after we already sent CLOSE_REQ */
		if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
		    !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
		    csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
			cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
		else
			cnic_cm_upcall(cp, csk, opcode);
4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080
		break;
	}
	csk_put(csk);
}

static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
{
	struct cnic_dev *dev = data;
	int i;

	for (i = 0; i < num; i++)
		cnic_cm_process_kcqe(dev, kcqe[i]);
}

static struct cnic_ulp_ops cm_ulp_ops = {
	.indicate_kcqes		= cnic_cm_indicate_kcqe,
};

static void cnic_cm_free_mem(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

	kfree(cp->csk_tbl);
	cp->csk_tbl = NULL;
	cnic_free_id_tbl(&cp->csk_port_tbl);
}

static int cnic_cm_alloc_mem(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
4081
	u32 port_id;
4082 4083 4084 4085 4086 4087

	cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
			      GFP_KERNEL);
	if (!cp->csk_tbl)
		return -ENOMEM;

4088
	port_id = prandom_u32();
4089
	port_id %= CNIC_LOCAL_PORT_RANGE;
4090
	if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4091
			     CNIC_LOCAL_PORT_MIN, port_id)) {
4092 4093 4094 4095 4096 4097 4098 4099
		cnic_cm_free_mem(dev);
		return -ENOMEM;
	}
	return 0;
}

static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
{
4100 4101 4102 4103
	if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) {
		/* Unsolicited RESET_COMP or RESET_RECEIVED */
		opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
		csk->state = opcode;
4104
	}
4105 4106

	/* 1. If event opcode matches the expected event in csk->state
4107 4108
	 * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
	 *    event
4109 4110
	 * 3. If the expected event is 0, meaning the connection was never
	 *    never established, we accept the opcode from cm_abort.
4111
	 */
4112
	if (opcode == csk->state || csk->state == 0 ||
4113 4114
	    csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
	    csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4115 4116 4117
		if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
			if (csk->state == 0)
				csk->state = opcode;
4118
			return 1;
4119
		}
4120
	}
4121 4122 4123 4124 4125 4126 4127 4128
	return 0;
}

static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode)
{
	struct cnic_dev *dev = csk->dev;
	struct cnic_local *cp = dev->cnic_priv;

4129 4130 4131 4132 4133
	if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
		cnic_cm_upcall(cp, csk, opcode);
		return;
	}

4134
	clear_bit(SK_F_CONNECT_START, &csk->flags);
4135
	cnic_close_conn(csk);
4136
	csk->state = opcode;
4137
	cnic_cm_upcall(cp, csk, opcode);
4138 4139 4140 4141 4142 4143 4144 4145 4146 4147
}

static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
{
}

static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
{
	u32 seed;

4148
	seed = prandom_u32();
4149 4150 4151 4152
	cnic_ctx_wr(dev, 45, 0, seed);
	return 0;
}

4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165
static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode)
{
	struct cnic_dev *dev = csk->dev;
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid];
	union l5cm_specific_data l5_data;
	u32 cmd = 0;
	int close_complete = 0;

	switch (opcode) {
	case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
	case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
	case L4_KCQE_OPCODE_VALUE_RESET_COMP:
4166
		if (cnic_ready_to_close(csk, opcode)) {
4167 4168 4169
			if (test_bit(SK_F_HW_ERR, &csk->flags))
				close_complete = 1;
			else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4170 4171 4172 4173
				cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
			else
				close_complete = 1;
		}
4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195
		break;
	case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
		cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
		break;
	case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
		close_complete = 1;
		break;
	}
	if (cmd) {
		memset(&l5_data, 0, sizeof(l5_data));

		cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE,
				    &l5_data);
	} else if (close_complete) {
		ctx->timestamp = jiffies;
		cnic_close_conn(csk);
		cnic_cm_upcall(cp, csk, csk->state);
	}
}

static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev)
{
4196 4197 4198 4199 4200 4201 4202 4203
	struct cnic_local *cp = dev->cnic_priv;

	if (!cp->ctx_tbl)
		return;

	if (!netif_running(dev->netdev))
		return;

4204
	cnic_bnx2x_delete_wait(dev, 0);
4205 4206 4207 4208 4209 4210 4211

	cancel_delayed_work(&cp->delete_task);
	flush_workqueue(cnic_wq);

	if (atomic_read(&cp->iscsi_conn) != 0)
		netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n",
			    atomic_read(&cp->iscsi_conn));
4212 4213 4214 4215 4216
}

static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4217
	struct bnx2x *bp = netdev_priv(dev->netdev);
4218
	u32 pfid = cp->pfid;
4219
	u32 port = CNIC_PORT(cp);
4220 4221 4222 4223 4224

	cnic_init_bnx2x_mac(dev);
	cnic_bnx2x_set_tcp_timestamp(dev, 1);

	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4225
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4226 4227

	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4228
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4229
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4230
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4231 4232 4233
		DEF_MAX_DA_COUNT);

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4234
		 XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4235
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4236
		 XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4237
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4238
		 XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4239
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4240
		XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4241

4242
	CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4243 4244 4245 4246
		DEF_MAX_CWND);
	return 0;
}

4247 4248 4249 4250 4251 4252 4253 4254 4255 4256
static void cnic_delete_task(struct work_struct *work)
{
	struct cnic_local *cp;
	struct cnic_dev *dev;
	u32 i;
	int need_resched = 0;

	cp = container_of(work, struct cnic_local, delete_task.work);
	dev = cp->dev;

4257 4258 4259 4260 4261 4262 4263 4264 4265
	if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
		struct drv_ctl_info info;

		cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);

		info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
		cp->ethdev->drv_ctl(dev->netdev, &info);
	}

4266 4267
	for (i = 0; i < cp->max_cid_space; i++) {
		struct cnic_context *ctx = &cp->ctx_tbl[i];
4268
		int err;
4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281

		if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) ||
		    !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
			continue;

		if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) {
			need_resched = 1;
			continue;
		}

		if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags))
			continue;

4282
		err = cnic_bnx2x_destroy_ramrod(dev, i);
4283 4284

		cnic_free_bnx2x_conn_resc(dev, i);
4285 4286 4287
		if (!err) {
			if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
				atomic_dec(&cp->iscsi_conn);
4288

4289 4290
			clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
		}
4291 4292 4293 4294 4295 4296 4297 4298
	}

	if (need_resched)
		queue_delayed_work(cnic_wq, &cp->delete_task,
				   msecs_to_jiffies(10));

}

4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312
static int cnic_cm_open(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int err;

	err = cnic_cm_alloc_mem(dev);
	if (err)
		return err;

	err = cp->start_cm(dev);

	if (err)
		goto err_out;

4313 4314
	INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);

4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366
	dev->cm_create = cnic_cm_create;
	dev->cm_destroy = cnic_cm_destroy;
	dev->cm_connect = cnic_cm_connect;
	dev->cm_abort = cnic_cm_abort;
	dev->cm_close = cnic_cm_close;
	dev->cm_select_dev = cnic_cm_select_dev;

	cp->ulp_handle[CNIC_ULP_L4] = dev;
	rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
	return 0;

err_out:
	cnic_cm_free_mem(dev);
	return err;
}

static int cnic_cm_shutdown(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int i;

	if (!cp->csk_tbl)
		return 0;

	for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
		struct cnic_sock *csk = &cp->csk_tbl[i];

		clear_bit(SK_F_INUSE, &csk->flags);
		cnic_cm_cleanup(csk);
	}
	cnic_cm_free_mem(dev);

	return 0;
}

static void cnic_init_context(struct cnic_dev *dev, u32 cid)
{
	u32 cid_addr;
	int i;

	cid_addr = GET_CID_ADDR(cid);

	for (i = 0; i < CTX_SIZE; i += 4)
		cnic_ctx_wr(dev, cid_addr, i, 0);
}

static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
{
	struct cnic_local *cp = dev->cnic_priv;
	int ret = 0, i;
	u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;

4367
	if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4368 4369 4370 4371 4372 4373 4374
		return 0;

	for (i = 0; i < cp->ctx_blks; i++) {
		int j;
		u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk;
		u32 val;

4375
		memset(cp->ctx_arr[i].ctx, 0, BNX2_PAGE_SIZE);
4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404

		CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0,
			(cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit);
		CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1,
			(u64) cp->ctx_arr[i].mapping >> 32);
		CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx |
			BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
		for (j = 0; j < 10; j++) {

			val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL);
			if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ))
				break;
			udelay(5);
		}
		if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) {
			ret = -EBUSY;
			break;
		}
	}
	return ret;
}

static void cnic_free_irq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;

	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
		cp->disable_int_sync(dev);
M
Michael Chan 已提交
4405
		tasklet_kill(&cp->cnic_irq_task);
4406 4407 4408 4409
		free_irq(ethdev->irq_arr[0].vector, dev);
	}
}

M
Michael Chan 已提交
4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422
static int cnic_request_irq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err;

	err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev);
	if (err)
		tasklet_disable(&cp->cnic_irq_task);

	return err;
}

4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439
static int cnic_init_bnx2_irq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;

	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
		int err, i = 0;
		int sblk_num = cp->status_blk_num;
		u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) +
			   BNX2_HC_SB_CONFIG_1;

		CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT);

		CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8);
		CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220);
		CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220);

4440
		cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4441
		tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4442
			     (unsigned long) dev);
M
Michael Chan 已提交
4443 4444
		err = cnic_request_irq(dev);
		if (err)
4445
			return err;
M
Michael Chan 已提交
4446

4447
		while (cp->status_blk.bnx2->status_completion_producer_index &&
4448 4449 4450 4451 4452 4453 4454
		       i < 10) {
			CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
				1 << (11 + sblk_num));
			udelay(10);
			i++;
			barrier();
		}
4455
		if (cp->status_blk.bnx2->status_completion_producer_index) {
4456 4457 4458 4459 4460
			cnic_free_irq(dev);
			goto failed;
		}

	} else {
4461
		struct status_block *sblk = cp->status_blk.gen;
4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478
		u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND);
		int i = 0;

		while (sblk->status_completion_producer_index && i < 10) {
			CNIC_WR(dev, BNX2_HC_COMMAND,
				hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT);
			udelay(10);
			i++;
			barrier();
		}
		if (sblk->status_completion_producer_index)
			goto failed;

	}
	return 0;

failed:
4479
	netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
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
	return -EBUSY;
}

static void cnic_enable_bnx2_int(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;

	if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
		return;

	CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
		BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
}

static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;

	if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
		return;

	CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
		BNX2_PCICFG_INT_ACK_CMD_MASK_INT);
	CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD);
	synchronize_irq(ethdev->irq_arr[0].vector);
}

static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
M
Michael Chan 已提交
4513
	struct cnic_uio_dev *udev = cp->udev;
4514 4515 4516
	u32 cid_addr, tx_cid, sb_id;
	u32 val, offset0, offset1, offset2, offset3;
	int i;
4517
	struct bnx2_tx_bd *txbd;
M
Michael Chan 已提交
4518
	dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4519
	struct status_block *s_blk = cp->status_blk.gen;
4520 4521 4522 4523 4524

	sb_id = cp->status_blk_num;
	tx_cid = 20;
	cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2;
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4525
		struct status_block_msix *sblk = cp->status_blk.bnx2;
4526 4527 4528 4529 4530 4531 4532 4533 4534

		tx_cid = TX_TSS_CID + sb_id - 1;
		CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) |
			(TX_TSS_CID << 7));
		cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index;
	}
	cp->tx_cons = *cp->tx_cons_ptr;

	cid_addr = GET_CID_ADDR(tx_cid);
4535
	if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
4536 4537 4538 4539 4540 4541 4542 4543 4544 4545
		u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40;

		for (i = 0; i < PHY_CTX_SIZE; i += 4)
			cnic_ctx_wr(dev, cid_addr2, i, 0);

		offset0 = BNX2_L2CTX_TYPE_XI;
		offset1 = BNX2_L2CTX_CMD_TYPE_XI;
		offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI;
		offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI;
	} else {
4546 4547 4548
		cnic_init_context(dev, tx_cid);
		cnic_init_context(dev, tx_cid + 1);

4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559
		offset0 = BNX2_L2CTX_TYPE;
		offset1 = BNX2_L2CTX_CMD_TYPE;
		offset2 = BNX2_L2CTX_TBDR_BHADDR_HI;
		offset3 = BNX2_L2CTX_TBDR_BHADDR_LO;
	}
	val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2;
	cnic_ctx_wr(dev, cid_addr, offset0, val);

	val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16);
	cnic_ctx_wr(dev, cid_addr, offset1, val);

4560
	txbd = udev->l2_ring;
4561

M
Michael Chan 已提交
4562
	buf_map = udev->l2_buf_map;
4563
	for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i++, txbd++) {
4564 4565 4566
		txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
		txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
	}
M
Michael Chan 已提交
4567
	val = (u64) ring_map >> 32;
4568 4569 4570
	cnic_ctx_wr(dev, cid_addr, offset2, val);
	txbd->tx_bd_haddr_hi = val;

M
Michael Chan 已提交
4571
	val = (u64) ring_map & 0xffffffff;
4572 4573 4574 4575 4576 4577 4578 4579
	cnic_ctx_wr(dev, cid_addr, offset3, val);
	txbd->tx_bd_haddr_lo = val;
}

static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
M
Michael Chan 已提交
4580
	struct cnic_uio_dev *udev = cp->udev;
4581 4582
	u32 cid_addr, sb_id, val, coal_reg, coal_val;
	int i;
4583
	struct bnx2_rx_bd *rxbd;
4584
	struct status_block *s_blk = cp->status_blk.gen;
M
Michael Chan 已提交
4585
	dma_addr_t ring_map = udev->l2_ring_map;
4586 4587 4588 4589 4590 4591 4592

	sb_id = cp->status_blk_num;
	cnic_init_context(dev, 2);
	cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2;
	coal_reg = BNX2_HC_COMMAND;
	coal_val = CNIC_RD(dev, coal_reg);
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4593
		struct status_block_msix *sblk = cp->status_blk.bnx2;
4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613

		cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index;
		coal_reg = BNX2_HC_COALESCE_NOW;
		coal_val = 1 << (11 + sb_id);
	}
	i = 0;
	while (!(*cp->rx_cons_ptr != 0) && i < 10) {
		CNIC_WR(dev, coal_reg, coal_val);
		udelay(10);
		i++;
		barrier();
	}
	cp->rx_cons = *cp->rx_cons_ptr;

	cid_addr = GET_CID_ADDR(2);
	val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
	      BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val);

	if (sb_id == 0)
4614
		val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4615
	else
4616
		val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4617 4618
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);

4619 4620
	rxbd = udev->l2_ring + BNX2_PAGE_SIZE;
	for (i = 0; i < BNX2_MAX_RX_DESC_CNT; i++, rxbd++) {
4621 4622 4623
		dma_addr_t buf_map;
		int n = (i % cp->l2_rx_ring_size) + 1;

M
Michael Chan 已提交
4624
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4625 4626 4627 4628 4629
		rxbd->rx_bd_len = cp->l2_single_buf_size;
		rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
		rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
		rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
	}
4630
	val = (u64) (ring_map + BNX2_PAGE_SIZE) >> 32;
4631 4632 4633
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
	rxbd->rx_bd_haddr_hi = val;

4634
	val = (u64) (ring_map + BNX2_PAGE_SIZE) & 0xffffffff;
4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
	rxbd->rx_bd_haddr_lo = val;

	val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
	cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
}

static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
{
	struct kwqe *wqes[1], l2kwqe;

	memset(&l2kwqe, 0, sizeof(l2kwqe));
	wqes[0] = &l2kwqe;
M
Michael Chan 已提交
4648
	l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679
			      (L2_KWQE_OPCODE_VALUE_FLUSH <<
			       KWQE_OPCODE_SHIFT) | 2;
	dev->submit_kwqes(dev, wqes, 1);
}

static void cnic_set_bnx2_mac(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 val;

	val = cp->func << 2;

	cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);

	val = cnic_reg_rd_ind(dev, cp->shmem_base +
			      BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
	dev->mac_addr[0] = (u8) (val >> 8);
	dev->mac_addr[1] = (u8) val;

	CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);

	val = cnic_reg_rd_ind(dev, cp->shmem_base +
			      BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
	dev->mac_addr[2] = (u8) (val >> 24);
	dev->mac_addr[3] = (u8) (val >> 16);
	dev->mac_addr[4] = (u8) (val >> 8);
	dev->mac_addr[5] = (u8) val;

	CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);

	val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
4680
	if (BNX2_CHIP(cp) != BNX2_CHIP_5709)
4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691
		val |= BNX2_RPM_SORT_USER2_PROM_VLAN;

	CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
	CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
	CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
}

static int cnic_start_bnx2_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
4692
	struct status_block *sblk = cp->status_blk.gen;
4693
	u32 val, kcq_cid_addr, kwq_cid_addr;
4694 4695 4696 4697 4698 4699
	int err;

	cnic_set_bnx2_mac(dev);

	val = CNIC_RD(dev, BNX2_MQ_CONFIG);
	val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
4700
	if (BNX2_PAGE_BITS > 12)
4701 4702
		val |= (12 - 8)  << 4;
	else
4703
		val |= (BNX2_PAGE_BITS - 8)  << 4;
4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717

	CNIC_WR(dev, BNX2_MQ_CONFIG, val);

	CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8);
	CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220);
	CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220);

	err = cnic_setup_5709_context(dev, 1);
	if (err)
		return err;

	cnic_init_context(dev, KWQ_CID);
	cnic_init_context(dev, KCQ_CID);

4718
	kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4719 4720 4721 4722 4723
	cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX;

	cp->max_kwq_idx = MAX_KWQ_IDX;
	cp->kwq_prod_idx = 0;
	cp->kwq_con_idx = 0;
4724
	set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4725

4726
	if (BNX2_CHIP(cp) == BNX2_CHIP_5706 || BNX2_CHIP(cp) == BNX2_CHIP_5708)
4727 4728 4729 4730 4731 4732
		cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15;
	else
		cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index;

	/* Initialize the kernel work queue context. */
	val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4733
	      (BNX2_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4734
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4735

4736
	val = (BNX2_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4737
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4738

4739
	val = ((BNX2_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4740
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4741 4742

	val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4743
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4744 4745

	val = (u32) cp->kwq_info.pgtbl_map;
4746 4747 4748 4749
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);

	kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
	cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
4750

4751 4752
	cp->kcq1.sw_prod_idx = 0;
	cp->kcq1.hw_prod_idx_ptr =
4753
		&sblk->status_completion_producer_index;
4754

4755
	cp->kcq1.status_idx_ptr = &sblk->status_idx;
4756 4757 4758

	/* Initialize the kernel complete queue context. */
	val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
4759
	      (BNX2_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4760
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4761

4762
	val = (BNX2_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4763
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4764

4765
	val = ((BNX2_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4766
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4767

4768 4769
	val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4770

4771 4772
	val = (u32) cp->kcq1.dma.pgtbl_map;
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4773 4774 4775

	cp->int_num = 0;
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4776
		struct status_block_msix *msblk = cp->status_blk.bnx2;
4777
		u32 sb_id = cp->status_blk_num;
4778
		u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4779

4780
		cp->kcq1.hw_prod_idx_ptr =
4781 4782 4783
			&msblk->status_completion_producer_index;
		cp->kcq1.status_idx_ptr = &msblk->status_idx;
		cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
4784
		cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4785 4786
		cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
		cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812
	}

	/* Enable Commnad Scheduler notification when we write to the
	 * host producer index of the kernel contexts. */
	CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2);

	/* Enable Command Scheduler notification when we write to either
	 * the Send Queue or Receive Queue producer indexes of the kernel
	 * bypass contexts. */
	CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7);
	CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7);

	/* Notify COM when the driver post an application buffer. */
	CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000);

	/* Set the CP and COM doorbells.  These two processors polls the
	 * doorbell for a non zero value before running.  This must be done
	 * after setting up the kernel queue contexts. */
	cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1);
	cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1);

	cnic_init_bnx2_tx_ring(dev);
	cnic_init_bnx2_rx_ring(dev);

	err = cnic_init_bnx2_irq(dev);
	if (err) {
4813
		netdev_err(dev->netdev, "cnic_init_irq failed\n");
4814 4815 4816 4817 4818
		cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
		cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
		return err;
	}

4819 4820
	ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;

4821 4822 4823
	return 0;
}

4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850
static void cnic_setup_bnx2x_context(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	u32 start_offset = ethdev->ctx_tbl_offset;
	int i;

	for (i = 0; i < cp->ctx_blks; i++) {
		struct cnic_ctx *ctx = &cp->ctx_arr[i];
		dma_addr_t map = ctx->mapping;

		if (cp->ctx_align) {
			unsigned long mask = cp->ctx_align - 1;

			map = (map + mask) & ~mask;
		}

		cnic_ctx_tbl_wr(dev, start_offset + i, map);
	}
}

static int cnic_init_bnx2x_irq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err = 0;

4851
	tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4852
		     (unsigned long) dev);
M
Michael Chan 已提交
4853 4854 4855
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
		err = cnic_request_irq(dev);

4856 4857 4858
	return err;
}

4859 4860 4861 4862
static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
						u16 sb_id, u8 sb_index,
						u8 disable)
{
M
Michael Chan 已提交
4863
	struct bnx2x *bp = netdev_priv(dev->netdev);
4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877

	u32 addr = BAR_CSTRORM_INTMEM +
			CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
			offsetof(struct hc_status_block_data_e1x, index_data) +
			sizeof(struct hc_index_data)*sb_index +
			offsetof(struct hc_index_data, flags);
	u16 flags = CNIC_RD16(dev, addr);
	/* clear and set */
	flags &= ~HC_INDEX_DATA_HC_ENABLED;
	flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) &
		  HC_INDEX_DATA_HC_ENABLED);
	CNIC_WR16(dev, addr, flags);
}

4878 4879 4880
static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4881
	struct bnx2x *bp = netdev_priv(dev->netdev);
4882 4883 4884
	u8 sb_id = cp->status_blk_num;

	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4885 4886 4887
			CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
			offsetof(struct hc_status_block_data_e1x, index_data) +
			sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
4888
			offsetof(struct hc_index_data, timeout), 64 / 4);
4889
	cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4890 4891 4892 4893 4894 4895
}

static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
{
}

4896 4897
static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4898 4899
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4900 4901 4902
	struct cnic_uio_dev *udev = cp->udev;
	union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring;
	dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4903
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4904
	int i;
4905
	u32 cli = cp->ethdev->iscsi_l2_client_id;
4906 4907
	u32 val;

4908
	memset(txbd, 0, BNX2_PAGE_SIZE);
4909

M
Michael Chan 已提交
4910
	buf_map = udev->l2_buf_map;
4911
	for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i += 3, txbd += 3) {
4912
		struct eth_tx_start_bd *start_bd = &txbd->start_bd;
Y
Yuval Mintz 已提交
4913 4914 4915
		struct eth_tx_parse_bd_e1x *pbd_e1x =
			&((txbd + 1)->parse_bd_e1x);
		struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
4916 4917 4918 4919 4920 4921 4922 4923 4924
		struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd);

		start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
		start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
		reg_bd->addr_hi = start_bd->addr_hi;
		reg_bd->addr_lo = start_bd->addr_lo + 0x10;
		start_bd->nbytes = cpu_to_le16(0x10);
		start_bd->nbd = cpu_to_le16(3);
		start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
Y
Yuval Mintz 已提交
4925
		start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS;
4926 4927
		start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);

Y
Yuval Mintz 已提交
4928 4929
		if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
			pbd_e2->parsing_data = (UNICAST_ADDRESS <<
4930
				ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
Y
Yuval Mintz 已提交
4931
		else
4932
			pbd_e1x->global_data = (UNICAST_ADDRESS <<
Y
Yuval Mintz 已提交
4933
				ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
4934 4935
	}

4936
	val = (u64) ring_map >> 32;
4937 4938
	txbd->next_bd.addr_hi = cpu_to_le32(val);

4939
	data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4940

4941
	val = (u64) ring_map & 0xffffffff;
4942 4943
	txbd->next_bd.addr_lo = cpu_to_le32(val);

4944
	data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4945

4946 4947 4948
	/* Other ramrod params */
	data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS;
	data->tx.tx_status_block_id = BNX2X_DEF_SB_ID;
4949 4950

	/* reset xstorm per client statistics */
4951
	if (cli < MAX_STAT_COUNTER_ID) {
4952 4953 4954
		data->general.statistics_zero_flg = 1;
		data->general.statistics_en_flg = 1;
		data->general.statistics_counter_id = cli;
4955
	}
4956 4957

	cp->tx_cons_ptr =
4958
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4959 4960
}

4961 4962
static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4963 4964
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4965 4966
	struct cnic_uio_dev *udev = cp->udev;
	struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4967
				BNX2_PAGE_SIZE);
4968
	struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4969
				(udev->l2_ring + (2 * BNX2_PAGE_SIZE));
4970
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4971
	int i;
4972
	u32 cli = cp->ethdev->iscsi_l2_client_id;
4973
	int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4974
	u32 val;
M
Michael Chan 已提交
4975
	dma_addr_t ring_map = udev->l2_ring_map;
4976 4977 4978 4979 4980

	/* General data */
	data->general.client_id = cli;
	data->general.activate_flg = 1;
	data->general.sp_client_id = cli;
4981 4982
	data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
	data->general.func_id = cp->pfid;
4983 4984 4985 4986 4987

	for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) {
		dma_addr_t buf_map;
		int n = (i % cp->l2_rx_ring_size) + 1;

M
Michael Chan 已提交
4988
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4989 4990 4991 4992
		rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
		rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
	}

4993
	val = (u64) (ring_map + BNX2_PAGE_SIZE) >> 32;
4994
	rxbd->addr_hi = cpu_to_le32(val);
4995
	data->rx.bd_page_base.hi = cpu_to_le32(val);
4996

4997
	val = (u64) (ring_map + BNX2_PAGE_SIZE) & 0xffffffff;
4998
	rxbd->addr_lo = cpu_to_le32(val);
4999
	data->rx.bd_page_base.lo = cpu_to_le32(val);
5000 5001

	rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
5002
	val = (u64) (ring_map + (2 * BNX2_PAGE_SIZE)) >> 32;
5003
	rxcqe->addr_hi = cpu_to_le32(val);
5004
	data->rx.cqe_page_base.hi = cpu_to_le32(val);
5005

5006
	val = (u64) (ring_map + (2 * BNX2_PAGE_SIZE)) & 0xffffffff;
5007
	rxcqe->addr_lo = cpu_to_le32(val);
5008
	data->rx.cqe_page_base.lo = cpu_to_le32(val);
5009

5010 5011 5012 5013
	/* Other ramrod params */
	data->rx.client_qzone_id = cl_qzone_id;
	data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS;
	data->rx.status_block_id = BNX2X_DEF_SB_ID;
5014

5015
	data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
5016

5017
	data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
5018
	data->rx.outer_vlan_removal_enable_flg = 1;
5019 5020 5021
	data->rx.silent_vlan_removal_flg = 1;
	data->rx.silent_vlan_value = 0;
	data->rx.silent_vlan_mask = 0xffff;
5022 5023

	cp->rx_cons_ptr =
5024
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
5025
	cp->rx_cons = *cp->rx_cons_ptr;
5026 5027
}

M
Michael Chan 已提交
5028 5029 5030
static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
5031
	struct bnx2x *bp = netdev_priv(dev->netdev);
M
Michael Chan 已提交
5032 5033 5034 5035 5036 5037
	u32 pfid = cp->pfid;

	cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
			   CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
	cp->kcq1.sw_prod_idx = 0;

5038
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053
		struct host_hc_status_block_e2 *sb = cp->status_blk.gen;

		cp->kcq1.hw_prod_idx_ptr =
			&sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
		cp->kcq1.status_idx_ptr =
			&sb->sb.running_index[SM_RX_ID];
	} else {
		struct host_hc_status_block_e1x *sb = cp->status_blk.gen;

		cp->kcq1.hw_prod_idx_ptr =
			&sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
		cp->kcq1.status_idx_ptr =
			&sb->sb.running_index[SM_RX_ID];
	}

5054
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066
		struct host_hc_status_block_e2 *sb = cp->status_blk.gen;

		cp->kcq2.io_addr = BAR_USTRORM_INTMEM +
					USTORM_FCOE_EQ_PROD_OFFSET(pfid);
		cp->kcq2.sw_prod_idx = 0;
		cp->kcq2.hw_prod_idx_ptr =
			&sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS];
		cp->kcq2.status_idx_ptr =
			&sb->sb.running_index[SM_RX_ID];
	}
}

5067 5068 5069
static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
5070
	struct bnx2x *bp = netdev_priv(dev->netdev);
5071
	struct cnic_eth_dev *ethdev = cp->ethdev;
M
Michael Chan 已提交
5072
	int func, ret;
5073
	u32 pfid;
5074

5075
	dev->stats_addr = ethdev->addr_drv_info_to_mcp;
M
Michael Chan 已提交
5076 5077 5078
	cp->port_mode = bp->common.chip_port_mode;
	cp->pfid = bp->pfid;
	cp->func = bp->pf_num;
M
Michael Chan 已提交
5079

M
Michael Chan 已提交
5080
	func = CNIC_FUNC(cp);
5081 5082
	pfid = cp->pfid;

5083
	ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5084
			       cp->iscsi_start_cid, 0);
5085 5086 5087 5088

	if (ret)
		return -ENOMEM;

5089
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
5090
		ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5091
					cp->fcoe_start_cid, 0);
M
Michael Chan 已提交
5092 5093 5094 5095 5096

		if (ret)
			return -ENOMEM;
	}

5097 5098
	cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;

M
Michael Chan 已提交
5099
	cnic_init_bnx2x_kcq(dev);
5100 5101

	/* Only 1 EQ */
5102
	CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5103
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5104
		CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5105
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5106
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5107
		cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5108
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5109
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5110
		(u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5111
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5112
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5113
		cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5114
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5115
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5116
		(u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5117
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5118
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5119
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5120
		CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5121
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5122
		CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5123
		HC_INDEX_ISCSI_EQ_CONS);
5124 5125

	CNIC_WR(dev, BAR_USTRORM_INTMEM +
5126
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5127 5128
		cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
5129
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5130 5131
		(u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);

5132 5133 5134
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
		TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);

5135 5136 5137 5138 5139 5140
	cnic_setup_bnx2x_context(dev);

	ret = cnic_init_bnx2x_irq(dev);
	if (ret)
		return ret;

5141
	ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ;
5142 5143 5144
	return 0;
}

M
Michael Chan 已提交
5145 5146
static void cnic_init_rings(struct cnic_dev *dev)
{
M
Michael Chan 已提交
5147
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
5148
	struct bnx2x *bp = netdev_priv(dev->netdev);
M
Michael Chan 已提交
5149
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
5150 5151 5152 5153

	if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
		return;

M
Michael Chan 已提交
5154 5155 5156
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
		cnic_init_bnx2_tx_ring(dev);
		cnic_init_bnx2_rx_ring(dev);
M
Michael Chan 已提交
5157
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5158
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5159 5160
		u32 cli = cp->ethdev->iscsi_l2_client_id;
		u32 cid = cp->ethdev->iscsi_l2_cid;
5161
		u32 cl_qzone_id;
5162
		struct client_init_ramrod_data *data;
5163 5164
		union l5cm_specific_data l5_data;
		struct ustorm_eth_rx_producers rx_prods = {0};
5165
		u32 off, i, *cid_ptr;
5166 5167 5168 5169 5170

		rx_prods.bd_prod = 0;
		rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
		barrier();

5171 5172
		cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);

5173
		off = BAR_USTRORM_INTMEM +
5174
			(BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) ?
M
Michael Chan 已提交
5175 5176
			 USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
			 USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
5177 5178

		for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5179
			CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5180

5181 5182
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

M
Michael Chan 已提交
5183
		data = udev->l2_buf;
5184
		cid_ptr = udev->l2_buf + 12;
5185 5186 5187 5188 5189 5190

		memset(data, 0, sizeof(*data));

		cnic_init_bnx2x_tx_ring(dev, data);
		cnic_init_bnx2x_rx_ring(dev, data);

M
Michael Chan 已提交
5191 5192
		l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
		l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5193

M
Michael Chan 已提交
5194 5195
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);

5196
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5197
			cid, ETH_CONNECTION_TYPE, &l5_data);
5198

5199 5200 5201 5202 5203 5204 5205 5206
		i = 0;
		while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
		       ++i < 10)
			msleep(1);

		if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
			netdev_err(dev->netdev,
				"iSCSI CLIENT_SETUP did not complete\n");
5207
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5208
		cnic_ring_ctl(dev, cid, cli, 1);
5209
		*cid_ptr = cid;
M
Michael Chan 已提交
5210 5211 5212 5213 5214
	}
}

static void cnic_shutdown_rings(struct cnic_dev *dev)
{
M
Michael Chan 已提交
5215
	struct cnic_local *cp = dev->cnic_priv;
5216 5217
	struct cnic_uio_dev *udev = cp->udev;
	void *rx_ring;
M
Michael Chan 已提交
5218 5219 5220 5221

	if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
		return;

M
Michael Chan 已提交
5222 5223
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
		cnic_shutdown_bnx2_rx_ring(dev);
5224
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5225 5226
		u32 cli = cp->ethdev->iscsi_l2_client_id;
		u32 cid = cp->ethdev->iscsi_l2_cid;
M
Michael Chan 已提交
5227
		union l5cm_specific_data l5_data;
5228
		int i;
5229

5230
		cnic_ring_ctl(dev, cid, cli, 0);
M
Michael Chan 已提交
5231

5232 5233
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

M
Michael Chan 已提交
5234 5235 5236
		l5_data.phy_address.lo = cli;
		l5_data.phy_address.hi = 0;
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5237
			cid, ETH_CONNECTION_TYPE, &l5_data);
5238 5239 5240 5241 5242 5243 5244 5245
		i = 0;
		while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) &&
		       ++i < 10)
			msleep(1);

		if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
			netdev_err(dev->netdev,
				"iSCSI CLIENT_HALT did not complete\n");
5246
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5247 5248

		memset(&l5_data, 0, sizeof(l5_data));
5249
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5250
			cid, NONE_CONNECTION_TYPE, &l5_data);
5251
		msleep(10);
M
Michael Chan 已提交
5252
	}
M
Michael Chan 已提交
5253
	clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5254 5255
	rx_ring = udev->l2_ring + BNX2_PAGE_SIZE;
	memset(rx_ring, 0, BNX2_PAGE_SIZE);
M
Michael Chan 已提交
5256 5257
}

5258
static int cnic_register_netdev(struct cnic_dev *dev)
5259 5260 5261 5262 5263
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err;

5264 5265 5266 5267 5268
	if (!ethdev)
		return -ENODEV;

	if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
		return 0;
5269 5270

	err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5271
	if (err)
5272
		netdev_err(dev->netdev, "register_cnic failed\n");
5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295

	return err;
}

static void cnic_unregister_netdev(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;

	if (!ethdev)
		return;

	ethdev->drv_unregister_cnic(dev->netdev);
}

static int cnic_start_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err;

	if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
		return -EALREADY;
5296 5297 5298 5299

	dev->regview = ethdev->io_base;
	pci_dev_get(dev->pcidev);
	cp->func = PCI_FUNC(dev->pcidev->devfn);
5300
	cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5301 5302 5303 5304
	cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;

	err = cp->alloc_resc(dev);
	if (err) {
5305
		netdev_err(dev->netdev, "allocate resource failure\n");
5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343 5344
		goto err1;
	}

	err = cp->start_hw(dev);
	if (err)
		goto err1;

	err = cnic_cm_open(dev);
	if (err)
		goto err1;

	set_bit(CNIC_F_CNIC_UP, &dev->flags);

	cp->enable_int(dev);

	return 0;

err1:
	cp->free_resc(dev);
	pci_dev_put(dev->pcidev);
	return err;
}

static void cnic_stop_bnx2_hw(struct cnic_dev *dev)
{
	cnic_disable_bnx2_int_sync(dev);

	cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
	cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);

	cnic_init_context(dev, KWQ_CID);
	cnic_init_context(dev, KCQ_CID);

	cnic_setup_5709_context(dev, 0);
	cnic_free_irq(dev);

	cnic_free_resc(dev);
}

5345 5346 5347 5348

static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
5349
	struct bnx2x *bp = netdev_priv(dev->netdev);
5350 5351 5352
	u32 hc_index = HC_INDEX_ISCSI_EQ_CONS;
	u32 sb_id = cp->status_blk_num;
	u32 idx_off, syn_off;
5353 5354

	cnic_free_irq(dev);
5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370

	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
		idx_off = offsetof(struct hc_status_block_e2, index_values) +
			  (hc_index * sizeof(u16));

		syn_off = CSTORM_HC_SYNC_LINE_INDEX_E2_OFFSET(hc_index, sb_id);
	} else {
		idx_off = offsetof(struct hc_status_block_e1x, index_values) +
			  (hc_index * sizeof(u16));

		syn_off = CSTORM_HC_SYNC_LINE_INDEX_E1X_OFFSET(hc_index, sb_id);
	}
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + syn_off, 0);
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_OFFSET(sb_id) +
		  idx_off, 0);

5371
	*cp->kcq1.hw_prod_idx_ptr = 0;
5372
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5373
		CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5374
	CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5375 5376 5377
	cnic_free_resc(dev);
}

5378 5379 5380 5381
static void cnic_stop_hw(struct cnic_dev *dev)
{
	if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
		struct cnic_local *cp = dev->cnic_priv;
5382
		int i = 0;
5383

5384 5385 5386
		/* Need to wait for the ring shutdown event to complete
		 * before clearing the CNIC_UP flag.
		 */
5387
		while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
5388 5389 5390
			msleep(100);
			i++;
		}
5391
		cnic_shutdown_rings(dev);
5392
		cp->stop_cm(dev);
5393
		cp->ethdev->drv_state &= ~CNIC_DRV_STATE_HANDLES_IRQ;
5394
		clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5395
		RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411
		synchronize_rcu();
		cnic_cm_shutdown(dev);
		cp->stop_hw(dev);
		pci_dev_put(dev->pcidev);
	}
}

static void cnic_free_dev(struct cnic_dev *dev)
{
	int i = 0;

	while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
		msleep(100);
		i++;
	}
	if (atomic_read(&dev->ref_count) != 0)
5412
		netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5413

5414
	netdev_info(dev->netdev, "Removed CNIC device\n");
5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427
	dev_put(dev->netdev);
	kfree(dev);
}

static struct cnic_dev *cnic_alloc_dev(struct net_device *dev,
				       struct pci_dev *pdev)
{
	struct cnic_dev *cdev;
	struct cnic_local *cp;
	int alloc_size;

	alloc_size = sizeof(struct cnic_dev) + sizeof(struct cnic_local);

5428 5429
	cdev = kzalloc(alloc_size, GFP_KERNEL);
	if (cdev == NULL)
5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444
		return NULL;

	cdev->netdev = dev;
	cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev);
	cdev->register_device = cnic_register_device;
	cdev->unregister_device = cnic_unregister_device;
	cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv;

	cp = cdev->cnic_priv;
	cp->dev = cdev;
	cp->l2_single_buf_size = 0x400;
	cp->l2_rx_ring_size = 3;

	spin_lock_init(&cp->cnic_ulp_lock);

5445
	netdev_info(dev, "Added CNIC device\n");
5446 5447 5448 5449 5450 5451 5452 5453 5454

	return cdev;
}

static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
{
	struct pci_dev *pdev;
	struct cnic_dev *cdev;
	struct cnic_local *cp;
5455
	struct bnx2 *bp = netdev_priv(dev);
5456 5457
	struct cnic_eth_dev *ethdev = NULL;

5458 5459 5460
	if (bp->cnic_probe)
		ethdev = (bp->cnic_probe)(dev);

5461 5462 5463 5464 5465 5466 5467 5468 5469
	if (!ethdev)
		return NULL;

	pdev = ethdev->pdev;
	if (!pdev)
		return NULL;

	dev_hold(dev);
	pci_dev_get(pdev);
5470 5471 5472 5473 5474
	if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
	     pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
	    (pdev->revision < 0x10)) {
		pci_dev_put(pdev);
		goto cnic_err;
5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487
	}
	pci_dev_put(pdev);

	cdev = cnic_alloc_dev(dev, pdev);
	if (cdev == NULL)
		goto cnic_err;

	set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
	cdev->submit_kwqes = cnic_submit_bnx2_kwqes;

	cp = cdev->cnic_priv;
	cp->ethdev = ethdev;
	cdev->pcidev = pdev;
M
Michael Chan 已提交
5488
	cp->chip_id = ethdev->chip_id;
5489

5490 5491
	cdev->max_iscsi_conn = ethdev->max_iscsi_conn;

5492 5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509
	cp->cnic_ops = &cnic_bnx2_ops;
	cp->start_hw = cnic_start_bnx2_hw;
	cp->stop_hw = cnic_stop_bnx2_hw;
	cp->setup_pgtbl = cnic_setup_page_tbl;
	cp->alloc_resc = cnic_alloc_bnx2_resc;
	cp->free_resc = cnic_free_resc;
	cp->start_cm = cnic_cm_init_bnx2_hw;
	cp->stop_cm = cnic_cm_stop_bnx2_hw;
	cp->enable_int = cnic_enable_bnx2_int;
	cp->disable_int_sync = cnic_disable_bnx2_int_sync;
	cp->close_conn = cnic_close_bnx2_conn;
	return cdev;

cnic_err:
	dev_put(dev);
	return NULL;
}

5510 5511 5512 5513 5514
static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
{
	struct pci_dev *pdev;
	struct cnic_dev *cdev;
	struct cnic_local *cp;
5515
	struct bnx2x *bp = netdev_priv(dev);
5516 5517
	struct cnic_eth_dev *ethdev = NULL;

5518 5519 5520
	if (bp->cnic_probe)
		ethdev = bp->cnic_probe(dev);

5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540
	if (!ethdev)
		return NULL;

	pdev = ethdev->pdev;
	if (!pdev)
		return NULL;

	dev_hold(dev);
	cdev = cnic_alloc_dev(dev, pdev);
	if (cdev == NULL) {
		dev_put(dev);
		return NULL;
	}

	set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
	cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;

	cp = cdev->cnic_priv;
	cp->ethdev = ethdev;
	cdev->pcidev = pdev;
M
Michael Chan 已提交
5541
	cp->chip_id = ethdev->chip_id;
5542

5543 5544
	cdev->stats_addr = ethdev->addr_drv_info_to_mcp;

5545 5546
	if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
		cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5547
	if (CNIC_SUPPORTS_FCOE(cp)) {
5548
		cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
5549 5550
		cdev->max_fcoe_exchanges = ethdev->max_fcoe_exchanges;
	}
5551

5552 5553 5554
	if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
		cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;

5555 5556
	memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);

5557 5558 5559 5560 5561 5562 5563 5564 5565 5566
	cp->cnic_ops = &cnic_bnx2x_ops;
	cp->start_hw = cnic_start_bnx2x_hw;
	cp->stop_hw = cnic_stop_bnx2x_hw;
	cp->setup_pgtbl = cnic_setup_page_tbl_le;
	cp->alloc_resc = cnic_alloc_bnx2x_resc;
	cp->free_resc = cnic_free_resc;
	cp->start_cm = cnic_cm_init_bnx2x_hw;
	cp->stop_cm = cnic_cm_stop_bnx2x_hw;
	cp->enable_int = cnic_enable_bnx2x_int;
	cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
5567
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
5568
		cp->ack_int = cnic_ack_bnx2x_e2_msix;
5569 5570
		cp->arm_int = cnic_arm_bnx2x_e2_msix;
	} else {
M
Michael Chan 已提交
5571
		cp->ack_int = cnic_ack_bnx2x_msix;
5572 5573
		cp->arm_int = cnic_arm_bnx2x_msix;
	}
5574 5575 5576 5577
	cp->close_conn = cnic_close_bnx2x_conn;
	return cdev;
}

5578 5579 5580 5581 5582 5583 5584 5585 5586 5587 5588
static struct cnic_dev *is_cnic_dev(struct net_device *dev)
{
	struct ethtool_drvinfo drvinfo;
	struct cnic_dev *cdev = NULL;

	if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) {
		memset(&drvinfo, 0, sizeof(drvinfo));
		dev->ethtool_ops->get_drvinfo(dev, &drvinfo);

		if (!strcmp(drvinfo.driver, "bnx2"))
			cdev = init_bnx2_cnic(dev);
5589 5590
		if (!strcmp(drvinfo.driver, "bnx2x"))
			cdev = init_bnx2x_cnic(dev);
5591 5592 5593 5594 5595 5596 5597 5598 5599
		if (cdev) {
			write_lock(&cnic_dev_lock);
			list_add(&cdev->list, &cnic_dev_list);
			write_unlock(&cnic_dev_lock);
		}
	}
	return cdev;
}

5600 5601 5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619 5620
static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
			      u16 vlan_id)
{
	int if_type;

	rcu_read_lock();
	for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
		struct cnic_ulp_ops *ulp_ops;
		void *ctx;

		ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
		if (!ulp_ops || !ulp_ops->indicate_netevent)
			continue;

		ctx = cp->ulp_handle[if_type];

		ulp_ops->indicate_netevent(ctx, event, vlan_id);
	}
	rcu_read_unlock();
}

5621
/* netdev event handler */
5622 5623 5624 5625 5626 5627 5628 5629 5630
static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
							 void *ptr)
{
	struct net_device *netdev = ptr;
	struct cnic_dev *dev;
	int new_dev = 0;

	dev = cnic_from_netdev(netdev);

5631
	if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) {
5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645
		/* Check for the hot-plug device */
		dev = is_cnic_dev(netdev);
		if (dev) {
			new_dev = 1;
			cnic_hold(dev);
		}
	}
	if (dev) {
		struct cnic_local *cp = dev->cnic_priv;

		if (new_dev)
			cnic_ulp_init(dev);
		else if (event == NETDEV_UNREGISTER)
			cnic_ulp_exit(dev);
5646

5647
		if (event == NETDEV_UP || (new_dev && netif_running(netdev))) {
5648 5649 5650 5651
			if (cnic_register_netdev(dev) != 0) {
				cnic_put(dev);
				goto done;
			}
5652 5653 5654 5655
			if (!cnic_start_hw(dev))
				cnic_ulp_start(dev);
		}

5656
		cnic_rcv_netevent(cp, event, 0);
5657 5658 5659 5660

		if (event == NETDEV_GOING_DOWN) {
			cnic_ulp_stop(dev);
			cnic_stop_hw(dev);
5661
			cnic_unregister_netdev(dev);
5662 5663 5664 5665 5666 5667 5668 5669 5670 5671
		} else if (event == NETDEV_UNREGISTER) {
			write_lock(&cnic_dev_lock);
			list_del_init(&dev->list);
			write_unlock(&cnic_dev_lock);

			cnic_put(dev);
			cnic_free_dev(dev);
			goto done;
		}
		cnic_put(dev);
5672 5673 5674 5675 5676 5677 5678 5679 5680 5681 5682 5683 5684
	} else {
		struct net_device *realdev;
		u16 vid;

		vid = cnic_get_vlan(netdev, &realdev);
		if (realdev) {
			dev = cnic_from_netdev(realdev);
			if (dev) {
				vid |= VLAN_TAG_PRESENT;
				cnic_rcv_netevent(dev->cnic_priv, event, vid);
				cnic_put(dev);
			}
		}
5685 5686 5687 5688 5689 5690 5691 5692 5693 5694 5695 5696
	}
done:
	return NOTIFY_DONE;
}

static struct notifier_block cnic_netdev_notifier = {
	.notifier_call = cnic_netdev_event
};

static void cnic_release(void)
{
	struct cnic_dev *dev;
5697
	struct cnic_uio_dev *udev;
5698 5699 5700 5701 5702 5703 5704 5705 5706

	while (!list_empty(&cnic_dev_list)) {
		dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
		if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
			cnic_ulp_stop(dev);
			cnic_stop_hw(dev);
		}

		cnic_ulp_exit(dev);
5707
		cnic_unregister_netdev(dev);
5708 5709 5710
		list_del_init(&dev->list);
		cnic_free_dev(dev);
	}
5711 5712 5713 5714 5715
	while (!list_empty(&cnic_udev_list)) {
		udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
				  list);
		cnic_free_uio(udev);
	}
5716 5717 5718 5719 5720 5721
}

static int __init cnic_init(void)
{
	int rc = 0;

5722
	pr_info("%s", version);
5723 5724 5725 5726 5727 5728 5729

	rc = register_netdevice_notifier(&cnic_netdev_notifier);
	if (rc) {
		cnic_release();
		return rc;
	}

5730 5731 5732 5733 5734 5735 5736
	cnic_wq = create_singlethread_workqueue("cnic_wq");
	if (!cnic_wq) {
		cnic_release();
		unregister_netdevice_notifier(&cnic_netdev_notifier);
		return -ENOMEM;
	}

5737 5738 5739 5740 5741 5742 5743
	return 0;
}

static void __exit cnic_exit(void)
{
	unregister_netdevice_notifier(&cnic_netdev_notifier);
	cnic_release();
5744
	destroy_workqueue(cnic_wq);
5745 5746 5747 5748
}

module_init(cnic_init);
module_exit(cnic_exit);