cnic.c 144.5 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>

#include "cnic_if.h"
#include "bnx2.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"

#define DRV_MODULE_NAME		"cnic"

static char version[] __devinitdata =
	"Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";

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;

	if (reg)
		info.cmd = DRV_CTL_ULP_REGISTER_CMD;
	else
		info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;

	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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	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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		netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
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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])) {
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		RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
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		cnic_put(dev);
	} else {
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		pr_err("%s: device not registered to this ulp type %d\n",
		       __func__, ulp_type);
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		mutex_unlock(&cnic_lock);
		return -EINVAL;
	}
	mutex_unlock(&cnic_lock);

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	if (ulp_type == CNIC_ULP_ISCSI)
		cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);

615 616
	synchronize_rcu();

617 618 619 620 621 622
	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]))
623
		netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
624

625 626
	cnic_ulp_ctl(dev, ulp_type, false);

627 628 629 630
	return 0;
}
EXPORT_SYMBOL(cnic_unregister_driver);

631 632
static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
			    u32 next)
633 634 635
{
	id_tbl->start = start_id;
	id_tbl->max = size;
636
	id_tbl->next = next;
637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715
	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]) {
M
Michael Chan 已提交
716 717
			dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
					  dma->pg_arr[i], dma->pg_map_arr[i]);
718 719 720 721
			dma->pg_arr[i] = NULL;
		}
	}
	if (dma->pgtbl) {
M
Michael Chan 已提交
722 723
		dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
				  dma->pgtbl, dma->pgtbl_map);
724 725 726 727 728 729 730 731 732 733
		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
734
	__le32 *page_table = (__le32 *) dma->pgtbl;
735 736 737

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in big endian format. */
M
Michael Chan 已提交
738
		*page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
739
		page_table++;
M
Michael Chan 已提交
740
		*page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
741 742 743 744
		page_table++;
	}
}

745 746 747
static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
{
	int i;
M
Michael Chan 已提交
748
	__le32 *page_table = (__le32 *) dma->pgtbl;
749 750 751

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in little endian format. */
M
Michael Chan 已提交
752
		*page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
753
		page_table++;
M
Michael Chan 已提交
754
		*page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
755 756 757 758
		page_table++;
	}
}

759 760 761 762 763 764 765 766 767 768 769 770 771 772 773
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
774 775 776 777
		dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
						    BCM_PAGE_SIZE,
						    &dma->pg_map_arr[i],
						    GFP_ATOMIC);
778 779 780 781 782 783 784 785
		if (dma->pg_arr[i] == NULL)
			goto error;
	}
	if (!use_pg_tbl)
		return 0;

	dma->pgtbl_size = ((pages * 8) + BCM_PAGE_SIZE - 1) &
			  ~(BCM_PAGE_SIZE - 1);
M
Michael Chan 已提交
786 787
	dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
					&dma->pgtbl_map, GFP_ATOMIC);
788 789 790 791 792 793 794 795 796 797 798 799
	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
800 801 802 803 804 805 806
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
807 808 809
			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
810 811 812 813 814
			cp->ctx_arr[i].ctx = NULL;
		}
	}
}

M
Michael Chan 已提交
815
static void __cnic_free_uio(struct cnic_uio_dev *udev)
816
{
M
Michael Chan 已提交
817
	uio_unregister_device(&udev->cnic_uinfo);
M
Michael Chan 已提交
818

M
Michael Chan 已提交
819 820 821 822
	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;
823 824
	}

M
Michael Chan 已提交
825 826 827 828
	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;
829
	}
830 831 832

	pci_dev_put(udev->pdev);
	kfree(udev);
M
Michael Chan 已提交
833 834
}

M
Michael Chan 已提交
835
static void cnic_free_uio(struct cnic_uio_dev *udev)
M
Michael Chan 已提交
836
{
M
Michael Chan 已提交
837
	if (!udev)
M
Michael Chan 已提交
838 839
		return;

840 841 842
	write_lock(&cnic_dev_lock);
	list_del_init(&udev->list);
	write_unlock(&cnic_dev_lock);
M
Michael Chan 已提交
843
	__cnic_free_uio(udev);
M
Michael Chan 已提交
844 845 846 847 848
}

static void cnic_free_resc(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
849
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
850

M
Michael Chan 已提交
851
	if (udev) {
852
		udev->dev = NULL;
M
Michael Chan 已提交
853
		cp->udev = NULL;
M
Michael Chan 已提交
854
	}
855

M
Michael Chan 已提交
856
	cnic_free_context(dev);
857 858 859 860 861 862
	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);
863
	cnic_free_dma(dev, &cp->kwq_16_data_info);
M
Michael Chan 已提交
864
	cnic_free_dma(dev, &cp->kcq2.dma);
865
	cnic_free_dma(dev, &cp->kcq1.dma);
866 867 868 869 870
	kfree(cp->iscsi_tbl);
	cp->iscsi_tbl = NULL;
	kfree(cp->ctx_tbl);
	cp->ctx_tbl = NULL;

M
Michael Chan 已提交
871
	cnic_free_id_tbl(&cp->fcoe_cid_tbl);
872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913
	cnic_free_id_tbl(&cp->cid_tbl);
}

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

	if (CHIP_NUM(cp) == CHIP_NUM_5709) {
		int i, k, arr_size;

		cp->ctx_blk_size = BCM_PAGE_SIZE;
		cp->cids_per_blk = BCM_PAGE_SIZE / 128;
		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
914 915 916 917
				dma_alloc_coherent(&dev->pcidev->dev,
						   BCM_PAGE_SIZE,
						   &cp->ctx_arr[i].mapping,
						   GFP_KERNEL);
918 919 920 921 922 923 924
			if (cp->ctx_arr[i].ctx == NULL)
				return -ENOMEM;
		}
	}
	return 0;
}

925 926 927 928 929 930 931 932 933 934 935
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)
936
{
937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954
	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;
955 956
	struct kcqe **kcq;

957 958
	if (use_pg_tbl)
		use_page_tbl = 1;
959

960
	err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
961 962 963 964 965 966
	if (err)
		return err;

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

967 968 969
	info->next_idx = cnic_bnx2_next_idx;
	info->hw_idx = cnic_bnx2_hw_idx;
	if (use_pg_tbl)
970 971
		return 0;

972 973 974
	info->next_idx = cnic_bnx2x_next_idx;
	info->hw_idx = cnic_bnx2x_hw_idx;

975 976 977 978 979 980 981 982 983 984 985 986 987
	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;
}

M
Michael Chan 已提交
988
static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
989 990
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
991 992
	struct cnic_uio_dev *udev;

993 994 995 996 997 998 999 1000 1001 1002 1003
	read_lock(&cnic_dev_lock);
	list_for_each_entry(udev, &cnic_udev_list, list) {
		if (udev->pdev == dev->pcidev) {
			udev->dev = dev;
			cp->udev = udev;
			read_unlock(&cnic_dev_lock);
			return 0;
		}
	}
	read_unlock(&cnic_dev_lock);

M
Michael Chan 已提交
1004 1005 1006 1007 1008
	udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
	if (!udev)
		return -ENOMEM;

	udev->uio_dev = -1;
1009

M
Michael Chan 已提交
1010 1011 1012 1013 1014 1015 1016
	udev->dev = dev;
	udev->pdev = dev->pcidev;
	udev->l2_ring_size = pages * BCM_PAGE_SIZE;
	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)
1017
		goto err_udev;
1018

M
Michael Chan 已提交
1019 1020 1021 1022 1023 1024
	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)
1025
		goto err_dma;
1026

1027 1028 1029 1030 1031 1032
	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
1033 1034
	cp->udev = udev;

1035
	return 0;
1036 1037 1038 1039 1040 1041
 err_dma:
	dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
			  udev->l2_ring, udev->l2_ring_map);
 err_udev:
	kfree(udev);
	return -ENOMEM;
1042 1043
}

M
Michael Chan 已提交
1044 1045
static int cnic_init_uio(struct cnic_dev *dev)
{
1046
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
1047
	struct cnic_uio_dev *udev = cp->udev;
1048
	struct uio_info *uinfo;
M
Michael Chan 已提交
1049
	int ret = 0;
1050

M
Michael Chan 已提交
1051
	if (!udev)
1052
		return -ENOMEM;
1053

M
Michael Chan 已提交
1054 1055
	uinfo = &udev->cnic_uinfo;

M
Michael Chan 已提交
1056
	uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
1057 1058 1059
	uinfo->mem[0].internal_addr = dev->regview;
	uinfo->mem[0].memtype = UIO_MEM_PHYS;

1060
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
M
Michael Chan 已提交
1061 1062
		uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
						     TX_MAX_TSS_RINGS + 1);
1063
		uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
M
Michael Chan 已提交
1064
					PAGE_MASK;
1065 1066 1067 1068 1069 1070
		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";
1071
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
M
Michael Chan 已提交
1072 1073
		uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);

1074 1075
		uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
			PAGE_MASK;
1076
		uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1077 1078

		uinfo->name = "bnx2x_cnic";
1079 1080
	}

1081 1082
	uinfo->mem[1].memtype = UIO_MEM_LOGICAL;

M
Michael Chan 已提交
1083 1084
	uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
	uinfo->mem[2].size = udev->l2_ring_size;
1085 1086
	uinfo->mem[2].memtype = UIO_MEM_LOGICAL;

M
Michael Chan 已提交
1087 1088
	uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
	uinfo->mem[3].size = udev->l2_buf_size;
1089 1090 1091 1092 1093 1094 1095 1096
	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;

1097 1098 1099
	if (udev->uio_dev == -1) {
		if (!uinfo->priv) {
			uinfo->priv = udev;
1100

1101 1102 1103 1104 1105
			ret = uio_register_device(&udev->pdev->dev, uinfo);
		}
	} else {
		cnic_init_rings(dev);
	}
1106

M
Michael Chan 已提交
1107
	return ret;
1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119
}

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;

1120
	ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1121 1122 1123 1124 1125 1126 1127
	if (ret)
		goto error;

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

M
Michael Chan 已提交
1128
	ret = cnic_alloc_uio_rings(dev, 2);
1129 1130 1131
	if (ret)
		goto error;

M
Michael Chan 已提交
1132
	ret = cnic_init_uio(dev);
1133 1134
	if (ret)
		goto error;
1135 1136 1137 1138 1139 1140 1141 1142

	return 0;

error:
	cnic_free_resc(dev);
	return ret;
}

1143 1144 1145 1146
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;
1147
	int total_mem, blks, i;
1148

1149
	total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1150 1151 1152 1153 1154 1155 1156
	blks = total_mem / ctx_blk_size;
	if (total_mem % ctx_blk_size)
		blks++;

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

1157
	cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1158 1159 1160 1161 1162
	if (cp->ctx_arr == NULL)
		return -ENOMEM;

	cp->ctx_blks = blks;
	cp->ctx_blk_size = ctx_blk_size;
M
Michael Chan 已提交
1163
	if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1164 1165 1166 1167 1168 1169 1170 1171
		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
1172 1173 1174
			dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
					   &cp->ctx_arr[i].mapping,
					   GFP_KERNEL);
1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192
		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;
1193 1194
	struct cnic_eth_dev *ethdev = cp->ethdev;
	u32 start_cid = ethdev->starting_cid;
1195 1196 1197
	int i, j, n, ret, pages;
	struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;

1198 1199
	cp->iro_arr = ethdev->iro_arr;

1200
	cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1201
	cp->iscsi_start_cid = start_cid;
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Michael Chan 已提交
1202 1203
	cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;

1204
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1205
		cp->max_cid_space += dev->max_fcoe_conn;
M
Michael Chan 已提交
1206 1207 1208 1209 1210
		cp->fcoe_init_cid = ethdev->fcoe_init_cid;
		if (!cp->fcoe_init_cid)
			cp->fcoe_init_cid = 0x10;
	}

1211 1212 1213 1214 1215 1216
	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) *
1217
				cp->max_cid_space, GFP_KERNEL);
1218 1219 1220 1221 1222 1223 1224 1225
	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
1226 1227 1228
	for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
		cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;

1229
	pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1230 1231 1232 1233 1234 1235 1236
		PAGE_SIZE;

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

	n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1237
	for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1238 1239 1240 1241 1242 1243 1244 1245 1246 1247
		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++;
	}

1248
	ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1249 1250 1251
	if (ret)
		goto error;

1252 1253
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
		ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
M
Michael Chan 已提交
1254 1255 1256 1257
		if (ret)
			goto error;
	}

1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270
	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;

	cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;

	cp->l2_rx_ring_size = 15;

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Michael Chan 已提交
1271
	ret = cnic_alloc_uio_rings(dev, 4);
1272 1273 1274
	if (ret)
		goto error;

M
Michael Chan 已提交
1275
	ret = cnic_init_uio(dev);
1276 1277 1278 1279 1280 1281 1282 1283 1284 1285
	if (ret)
		goto error;

	return 0;

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

1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303
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) &&
1304
	    !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1305 1306 1307 1308
		spin_unlock_bh(&cp->cnic_ulp_lock);
		return -EAGAIN;
	}

1309
	clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326

	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;
}

1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344
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];
1345
	u16 type_16;
1346 1347 1348 1349
	int ret;

	kwqe.hdr.conn_and_cmd_data =
		cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1350
			     BNX2X_HW_CID(cp, cid)));
1351 1352 1353 1354 1355 1356

	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);
1357
	kwqe.hdr.reserved1 = 0;
1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369
	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;

1370
	return ret;
1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391
}

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;
	struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
1392 1393
	int hq_bds, pages;
	u32 pfid = cp->pfid;
1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409

	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 */
1410
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1411
		  req1->rq_num_wqes);
1412
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1413 1414
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1415
		 TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1416
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1417
		  TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1418 1419 1420 1421
		  req1->num_tasks_per_conn);

	/* init Ustorm RAM */
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1422
		  USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1423
		  req1->rq_buffer_size);
1424
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1425 1426
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1427
		 USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1428
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1429
		  USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1430
		  req1->num_tasks_per_conn);
1431
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1432
		  req1->rq_num_wqes);
1433
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1434
		  req1->cq_num_wqes);
1435
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1436 1437 1438
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Xstorm RAM */
1439
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1440 1441
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1442
		 XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1443
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1444
		  XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1445
		  req1->num_tasks_per_conn);
1446
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1447
		  hq_bds);
1448
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1449
		  req1->num_tasks_per_conn);
1450
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1451 1452 1453
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Cstorm RAM */
1454
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1455 1456
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1457
		 CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1458
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1459
		  CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1460
		  req1->num_tasks_per_conn);
1461
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1462
		  req1->cq_num_wqes);
1463
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1464 1465 1466 1467 1468 1469 1470 1471 1472
		  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;
1473
	u32 pfid = cp->pfid;
1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484
	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 +
1485
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1486
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1487
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1488 1489 1490
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1491
		  USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1492
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1493
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1494
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1495
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1496 1497 1498
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1499
		  CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521

	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
1522 1523 1524
		cnic_free_id(&cp->cid_tbl, ctx->cid);
	} else {
		cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1525
	}
M
Michael Chan 已提交
1526

1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537
	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
1538 1539 1540 1541 1542 1543 1544 1545 1546 1547
	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;
	}

1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619
	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;
1620
	u32 hw_cid = BNX2X_HW_CID(cp, cid);
1621 1622 1623
	struct iscsi_context *ictx;
	struct regpair context_addr;
	int i, j, n = 2, n_max;
1624
	u8 port = CNIC_PORT(cp);
1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675

	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;
1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686
	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;
1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697

	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;
1698 1699
	ictx->tstorm_st_context.tcp.ooo_support_mode =
		TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1700

1701
	ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1702 1703

	ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1704
		req2->rq_page_table_addr_lo;
1705
	ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1706
		req2->rq_page_table_addr_hi;
1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 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
	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;
1800
	struct cnic_context *ctx;
1801 1802 1803
	struct iscsi_kcqe kcqe;
	struct kcqe *cqes[1];
	u32 l5_cid;
1804
	int ret = 0;
1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816

	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;
	}
1817
	*work = 2 + req2->num_additional_wqes;
1818 1819 1820 1821 1822 1823 1824 1825 1826 1827

	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;

1828 1829 1830 1831 1832 1833 1834
	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;
	}

1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852
	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;
1853
	kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1854 1855 1856 1857

done:
	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1858
	return 0;
1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885
}


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;
}

1886
static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1887 1888 1889
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1890 1891
	union l5cm_specific_data l5_data;
	int ret;
1892
	u32 hw_cid;
1893 1894 1895 1896

	init_waitqueue_head(&ctx->waitq);
	ctx->wait_cond = 0;
	memset(&l5_data, 0, sizeof(l5_data));
1897 1898 1899
	hw_cid = BNX2X_HW_CID(cp, ctx->cid);

	ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1900
				  hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1901

1902
	if (ret == 0) {
1903
		wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1904 1905 1906
		if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
			return -EBUSY;
	}
1907

1908
	return 0;
1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924
}

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;

1925 1926 1927 1928 1929 1930 1931 1932 1933 1934
	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;
	}
1935 1936 1937

	ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);

1938 1939 1940
skip_cfc_delete:
	cnic_free_bnx2x_conn_resc(dev, l5_cid);

1941 1942 1943 1944
	if (!ret) {
		atomic_dec(&cp->iscsi_conn);
		clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
	}
1945

1946
destroy_reply:
1947 1948 1949 1950 1951 1952 1953 1954 1955
	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);

1956
	return 0;
1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
}

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;
2009
	u32 pfid = cp->pfid;
2010 2011 2012
	u8 *mac = dev->mac_addr;

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2013
		 XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2014
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2015
		 XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2016
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2017
		 XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2018
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2019
		 XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2020
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2021
		 XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2022
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2023
		 XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2024 2025

	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2026
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2027
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2028
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2029 2030
		 mac[4]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2031
		 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2032
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2033
		 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2034 2035
		 mac[2]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2036
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2037
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2038
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053
		 mac[0]);
}

static void cnic_bnx2x_set_tcp_timestamp(struct cnic_dev *dev, int tcp_ts)
{
	struct cnic_local *cp = dev->cnic_priv;
	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 +
2054
		 XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
2055 2056

	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
2057
		  TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090
}

static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
			      u32 num, int *work)
{
	struct cnic_local *cp = dev->cnic_priv;
	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) {
2091
		netdev_err(dev->netdev, "conn_buf size too big\n");
2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131
		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 +
2132
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2133 2134 2135 2136 2137 2138 2139

	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)
2140
		set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197

	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;
}

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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));

2217
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
M
Michael Chan 已提交
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				  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));
2262 2263 2264
	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;
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Michael Chan 已提交
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	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);
2272
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
M
Michael Chan 已提交
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				  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;
2308
	if (l5_cid >= dev->max_fcoe_conn)
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Michael Chan 已提交
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		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;
2412
	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;
2446
	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;

2456 2457
	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) {
2462 2463 2464
		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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	}

2467 2468 2469
	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;
}

2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502
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
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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;

2511 2512
	cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);

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

	memset(&l5_data, 0, sizeof(l5_data));
2517
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
M
Michael Chan 已提交
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				  FCOE_CONNECTION_TYPE, &l5_data);
	return ret;
}

2522 2523 2524 2525 2526 2527 2528 2529
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;
2530
	u32 kcqe_op;
2531 2532 2533 2534 2535
	int ulp_type;

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

2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553
	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;
2554
		kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2555 2556 2557 2558
		kcqe.kcqe_info2 = cid;
		kcqe.kcqe_info0 = l5_cid;

	} else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
2559 2560 2561 2562 2563 2564
		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;
2565
		kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR;
2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583
		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;
2584
		l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
2585 2586 2587 2588 2589 2590 2591 2592 2593 2594
		l4kcqe->cid = cid;
		cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
	} else {
		return;
	}

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

M
Michael Chan 已提交
2595 2596
static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
					 struct kwqe *wqes[], u32 num_wqes)
2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647
{
	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;
2648 2649
			netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
				   opcode);
2650 2651
			break;
		}
2652
		if (ret < 0) {
2653 2654
			netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
				   opcode);
2655 2656 2657 2658 2659 2660 2661 2662

			/* 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);
		}
2663 2664 2665 2666 2667
		i += work;
	}
	return 0;
}

M
Michael Chan 已提交
2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678
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 */

2679
	if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
M
Michael Chan 已提交
2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716
		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;
		}
2717
		if (ret < 0) {
M
Michael Chan 已提交
2718 2719
			netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
				   opcode);
2720 2721 2722 2723 2724 2725 2726 2727

			/* 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
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 2764 2765 2766 2767
		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;
}

2768 2769 2770
static void service_kcqes(struct cnic_dev *dev, int num_cqes)
{
	struct cnic_local *cp = dev->cnic_priv;
2771
	int i, j, comp = 0;
2772 2773 2774 2775 2776 2777 2778

	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
2779
		u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2780 2781

		if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2782
			comp++;
2783 2784 2785 2786

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

M
Michael Chan 已提交
2787
			if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2788 2789 2790
				break;

			if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2791
				comp++;
2792 2793 2794 2795 2796 2797 2798
			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
2799 2800
		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
			ulp_type = CNIC_ULP_FCOE;
2801 2802 2803 2804 2805
		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 {
2806 2807
			netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
				   kcqe_op_flag);
2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822
			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;
	}
2823 2824
	if (unlikely(comp))
		cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2825 2826
}

M
Michael Chan 已提交
2827
static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2828 2829
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
2830
	u16 i, ri, hw_prod, last;
2831 2832 2833
	struct kcqe *kcqe;
	int kcqe_cnt = 0, last_cnt = 0;

M
Michael Chan 已提交
2834
	i = ri = last = info->sw_prod_idx;
2835
	ri &= MAX_KCQ_IDX;
M
Michael Chan 已提交
2836
	hw_prod = *info->hw_prod_idx_ptr;
2837
	hw_prod = info->hw_idx(hw_prod);
2838 2839

	while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
M
Michael Chan 已提交
2840
		kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2841
		cp->completed_kcq[kcqe_cnt++] = kcqe;
2842
		i = info->next_idx(i);
2843 2844 2845 2846 2847 2848 2849
		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
2850
	info->sw_prod_idx = last;
2851 2852 2853
	return last_cnt;
}

2854 2855 2856
static int cnic_l2_completion(struct cnic_local *cp)
{
	u16 hw_cons, sw_cons;
M
Michael Chan 已提交
2857
	struct cnic_uio_dev *udev = cp->udev;
2858
	union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
M
Michael Chan 已提交
2859
					(udev->l2_ring + (2 * BCM_PAGE_SIZE));
2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887
	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
2888
static void cnic_chk_pkt_rings(struct cnic_local *cp)
2889
{
M
Michael Chan 已提交
2890
	u16 rx_cons, tx_cons;
2891
	int comp = 0;
2892

M
Michael Chan 已提交
2893
	if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2894 2895
		return;

M
Michael Chan 已提交
2896 2897
	rx_cons = *cp->rx_cons_ptr;
	tx_cons = *cp->tx_cons_ptr;
2898
	if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2899 2900 2901
		if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
			comp = cnic_l2_completion(cp);

2902 2903
		cp->tx_cons = tx_cons;
		cp->rx_cons = rx_cons;
2904

M
Michael Chan 已提交
2905 2906
		if (cp->udev)
			uio_event_notify(&cp->udev->cnic_uinfo);
2907
	}
2908 2909
	if (comp)
		clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2910 2911
}

2912
static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2913 2914
{
	struct cnic_local *cp = dev->cnic_priv;
2915
	u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2916 2917
	int kcqe_cnt;

2918 2919
	/* status block index must be read before reading other fields */
	rmb();
2920 2921
	cp->kwq_con_idx = *cp->kwq_con_idx_ptr;

M
Michael Chan 已提交
2922
	while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2923 2924 2925 2926 2927

		service_kcqes(dev, kcqe_cnt);

		/* Tell compiler that status_blk fields can change. */
		barrier();
M
Michael Chan 已提交
2928 2929 2930 2931
		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;
2932 2933
	}

M
Michael Chan 已提交
2934
	CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2935

M
Michael Chan 已提交
2936
	cnic_chk_pkt_rings(cp);
2937

2938 2939 2940
	return status_idx;
}

2941
static int cnic_service_bnx2(void *data, void *status_blk)
2942
{
2943
	struct cnic_dev *dev = data;
2944

2945 2946 2947 2948 2949
	if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
		struct status_block *sblk = status_blk;

		return sblk->status_idx;
	}
2950

2951 2952
	return cnic_service_bnx2_queues(dev);
}
2953

2954 2955 2956 2957
static void cnic_service_bnx2_msix(unsigned long data)
{
	struct cnic_dev *dev = (struct cnic_dev *) data;
	struct cnic_local *cp = dev->cnic_priv;
2958

2959
	cp->last_status_idx = cnic_service_bnx2_queues(dev);
2960 2961 2962 2963 2964

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

2965 2966 2967 2968 2969
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))) {
2970 2971
		u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;

2972
		prefetch(cp->status_blk.gen);
2973
		prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2974 2975 2976 2977 2978

		tasklet_schedule(&cp->cnic_irq_task);
	}
}

2979 2980 2981 2982 2983 2984 2985 2986
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);

2987
	cnic_doirq(dev);
2988 2989 2990 2991

	return IRQ_HANDLED;
}

2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009
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
3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025
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);
}

3026 3027 3028 3029
static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

3030
	cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
3031 3032 3033
			   IGU_INT_DISABLE, 0);
}

M
Michael Chan 已提交
3034 3035 3036 3037 3038 3039 3040 3041
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);
}

3042
static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3043
{
3044
	u32 last_status = *info->status_idx_ptr;
3045 3046
	int kcqe_cnt;

3047 3048
	/* status block index must be read before reading the KCQ */
	rmb();
3049
	while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3050 3051 3052 3053 3054 3055

		service_kcqes(dev, kcqe_cnt);

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

3056
		last_status = *info->status_idx_ptr;
3057 3058
		/* status block index must be read before reading the KCQ */
		rmb();
3059
	}
3060 3061 3062 3063 3064 3065 3066
	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
3067
	u32 status_idx, new_status_idx;
3068 3069 3070 3071

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

M
Michael Chan 已提交
3072 3073
	while (1) {
		status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3074

M
Michael Chan 已提交
3075 3076
		CNIC_WR16(dev, cp->kcq1.io_addr,
			  cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
M
Michael Chan 已提交
3077

3078
		if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
3079 3080 3081 3082 3083 3084 3085 3086 3087
			cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
					   status_idx, IGU_INT_ENABLE, 1);
			break;
		}

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

		if (new_status_idx != status_idx)
			continue;
M
Michael Chan 已提交
3088 3089 3090 3091

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

M
Michael Chan 已提交
3092 3093
		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
3094 3095

		break;
M
Michael Chan 已提交
3096
	}
3097 3098 3099 3100 3101 3102 3103
}

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

3104 3105
	if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
		cnic_doirq(dev);
3106

3107
	cnic_chk_pkt_rings(cp);
3108 3109 3110 3111

	return 0;
}

3112
static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3113
{
3114
	struct cnic_ulp_ops *ulp_ops;
3115

3116 3117
	if (if_type == CNIC_ULP_ISCSI)
		cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3118

3119 3120 3121 3122
	mutex_lock(&cnic_lock);
	ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
					    lockdep_is_held(&cnic_lock));
	if (!ulp_ops) {
3123
		mutex_unlock(&cnic_lock);
3124 3125 3126 3127
		return;
	}
	set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
	mutex_unlock(&cnic_lock);
3128

3129 3130
	if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
		ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3131

3132 3133 3134 3135 3136 3137 3138 3139 3140 3141
	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);
3142 3143 3144 3145 3146 3147 3148 3149 3150 3151
}

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;

3152
		mutex_lock(&cnic_lock);
3153 3154
		ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
						    lockdep_is_held(&cnic_lock));
3155 3156
		if (!ulp_ops || !ulp_ops->cnic_start) {
			mutex_unlock(&cnic_lock);
3157
			continue;
3158 3159 3160
		}
		set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
		mutex_unlock(&cnic_lock);
3161 3162 3163

		if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
			ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3164 3165

		clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3166 3167 3168
	}
}

3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184
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;
}

3185 3186 3187
static int cnic_ctl(void *data, struct cnic_ctl_info *info)
{
	struct cnic_dev *dev = data;
3188
	int ulp_type = CNIC_ULP_ISCSI;
3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206

	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;
3207 3208 3209 3210 3211 3212
	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;
	}
3213
	case CNIC_CTL_COMPLETION_CMD: {
3214 3215
		struct cnic_ctl_completion *comp = &info->data.comp;
		u32 cid = BNX2X_SW_CID(comp->cid);
3216 3217 3218 3219 3220 3221
		u32 l5_cid;
		struct cnic_local *cp = dev->cnic_priv;

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

3222 3223 3224 3225 3226 3227 3228
			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);
			}

3229 3230 3231 3232 3233
			ctx->wait_cond = 1;
			wake_up(&ctx->waitq);
		}
		break;
	}
3234 3235 3236 3237 3238 3239 3240 3241 3242
	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;

3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256
	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;

3257
		mutex_lock(&cnic_lock);
3258
		ulp_ops = cnic_ulp_tbl_prot(i);
3259 3260
		if (!ulp_ops || !ulp_ops->cnic_init) {
			mutex_unlock(&cnic_lock);
3261
			continue;
3262 3263 3264
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
3265 3266 3267 3268

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

3269
		ulp_put(ulp_ops);
3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280
	}
}

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;

3281
		mutex_lock(&cnic_lock);
3282
		ulp_ops = cnic_ulp_tbl_prot(i);
3283 3284
		if (!ulp_ops || !ulp_ops->cnic_exit) {
			mutex_unlock(&cnic_lock);
3285
			continue;
3286 3287 3288
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
3289 3290 3291 3292

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

3293
		ulp_put(ulp_ops);
3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326
	}
}

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;
3327
	l4kwqe->ipid_start = DEF_IPID_START;
3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 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
	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;

3512 3513 3514 3515 3516 3517 3518
	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;
	}

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
	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;

3552
		cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596
		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)
{
3597
#if defined(CONFIG_INET)
3598 3599
	struct rtable *rt;

3600 3601
	rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
	if (!IS_ERR(rt)) {
3602
		*dst = &rt->dst;
3603 3604 3605
		return 0;
	}
	return PTR_ERR(rt);
3606 3607 3608
#else
	return -ENETUNREACH;
#endif
3609 3610 3611 3612 3613
}

static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
			     struct dst_entry **dst)
{
3614
#if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3615
	struct flowi6 fl6;
3616

3617
	memset(&fl6, 0, sizeof(fl6));
A
Alexey Dobriyan 已提交
3618
	fl6.daddr = dst_addr->sin6_addr;
3619 3620
	if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
		fl6.flowi6_oif = dst_addr->sin6_scope_id;
3621

3622
	*dst = ip6_route_output(&init_net, NULL, &fl6);
3623 3624 3625 3626 3627
	if ((*dst)->error) {
		dst_release(*dst);
		*dst = NULL;
		return -ENETUNREACH;
	} else
3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680
		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;
3681 3682
	int is_v6, rc = 0;
	struct dst_entry *dst = NULL;
3683
	struct net_device *realdev;
3684 3685
	__be16 local_port;
	u32 port_id;
3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699

	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);
3700
		cnic_get_v6_route(&saddr->remote.v6, &dst);
3701 3702 3703 3704 3705 3706 3707

		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 {
3708
		cnic_get_v4_route(&saddr->remote.v4, &dst);
3709 3710 3711 3712 3713 3714

		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;
	}

3715 3716 3717 3718 3719 3720 3721 3722 3723
	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);
		}
	}
3724

3725 3726 3727 3728 3729
	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;
3730
	} else
3731
		port_id = 0;
3732

3733 3734 3735
	if (!port_id) {
		port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
		if (port_id == -1) {
3736 3737 3738
			rc = -ENOMEM;
			goto err_out;
		}
3739
		local_port = cpu_to_be16(port_id);
3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756
	}
	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)
{
3757
	struct cnic_local *cp = csk->dev->cnic_priv;
3758 3759
	int err = 0;

3760 3761 3762
	if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
		return -EOPNOTSUPP;

3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786
	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;
3787
	u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799

	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
	 * connect was not successful.
	 */

	cp->close_conn(csk, opcode);
3800 3801
	if (csk->state != opcode)
		return -EALREADY;
3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813

	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);
3814 3815
	} else {
		return -EALREADY;
3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868
	}
	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;
	}
3869 3870 3871 3872 3873 3874 3875 3876
	/* 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;
	}

3877 3878 3879 3880 3881 3882 3883 3884
	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
3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896
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);
}

3897 3898 3899 3900 3901 3902 3903 3904
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
3905 3906 3907 3908
	if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
		cnic_process_fcoe_term_conn(dev, kcqe);
		return;
	}
3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929
	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) {
3930 3931 3932 3933 3934 3935 3936
	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;
3937 3938 3939
	case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
		if (l4kcqe->status == 0)
			set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
3940 3941
		else if (l4kcqe->status ==
			 L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
3942
			set_bit(SK_F_HW_ERR, &csk->flags);
3943 3944 3945 3946 3947 3948 3949 3950 3951

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

	case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
	case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
	case L4_KCQE_OPCODE_VALUE_RESET_COMP:
3952 3953
	case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
	case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3954
		if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
3955 3956
			set_bit(SK_F_HW_ERR, &csk->flags);

3957 3958 3959 3960
		cp->close_conn(csk, opcode);
		break;

	case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3961 3962 3963 3964 3965 3966 3967
		/* 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);
3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997
		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;
3998
	u32 port_id;
3999 4000 4001 4002 4003 4004

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

4005
	port_id = random32();
4006
	port_id %= CNIC_LOCAL_PORT_RANGE;
4007
	if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
4008
			     CNIC_LOCAL_PORT_MIN, port_id)) {
4009 4010 4011 4012 4013 4014 4015 4016
		cnic_cm_free_mem(dev);
		return -ENOMEM;
	}
	return 0;
}

static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
{
4017 4018 4019 4020
	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;
4021
	}
4022 4023

	/* 1. If event opcode matches the expected event in csk->state
4024 4025
	 * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
	 *    event
4026 4027
	 * 3. If the expected event is 0, meaning the connection was never
	 *    never established, we accept the opcode from cm_abort.
4028
	 */
4029
	if (opcode == csk->state || csk->state == 0 ||
4030 4031
	    csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
	    csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
4032 4033 4034
		if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
			if (csk->state == 0)
				csk->state = opcode;
4035
			return 1;
4036
		}
4037
	}
4038 4039 4040 4041 4042 4043 4044 4045
	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;

4046 4047 4048 4049 4050
	if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
		cnic_cm_upcall(cp, csk, opcode);
		return;
	}

4051
	clear_bit(SK_F_CONNECT_START, &csk->flags);
4052
	cnic_close_conn(csk);
4053
	csk->state = opcode;
4054
	cnic_cm_upcall(cp, csk, opcode);
4055 4056 4057 4058 4059 4060 4061 4062 4063 4064
}

static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
{
}

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

4065
	seed = random32();
4066 4067 4068 4069
	cnic_ctx_wr(dev, 45, 0, seed);
	return 0;
}

4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082
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:
4083
		if (cnic_ready_to_close(csk, opcode)) {
4084 4085 4086
			if (test_bit(SK_F_HW_ERR, &csk->flags))
				close_complete = 1;
			else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4087 4088 4089 4090
				cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
			else
				close_complete = 1;
		}
4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112
		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)
{
4113 4114 4115 4116 4117 4118 4119 4120
	struct cnic_local *cp = dev->cnic_priv;

	if (!cp->ctx_tbl)
		return;

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

4121
	cnic_bnx2x_delete_wait(dev, 0);
4122 4123 4124 4125 4126 4127 4128

	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));
4129 4130 4131 4132 4133
}

static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
4134
	u32 pfid = cp->pfid;
4135
	u32 port = CNIC_PORT(cp);
4136 4137 4138 4139 4140

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

	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4141
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4142 4143

	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4144
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4145
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4146
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4147 4148 4149
		DEF_MAX_DA_COUNT);

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4150
		 XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4151
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4152
		 XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4153
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4154
		 XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4155
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4156
		XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4157

4158
	CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4159 4160 4161 4162
		DEF_MAX_CWND);
	return 0;
}

4163 4164 4165 4166 4167 4168 4169 4170 4171 4172
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;

4173 4174 4175 4176 4177 4178 4179 4180 4181
	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);
	}

4182 4183
	for (i = 0; i < cp->max_cid_space; i++) {
		struct cnic_context *ctx = &cp->ctx_tbl[i];
4184
		int err;
4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197

		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;

4198
		err = cnic_bnx2x_destroy_ramrod(dev, i);
4199 4200

		cnic_free_bnx2x_conn_resc(dev, i);
4201 4202 4203
		if (!err) {
			if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
				atomic_dec(&cp->iscsi_conn);
4204

4205 4206
			clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
		}
4207 4208 4209 4210 4211 4212 4213 4214
	}

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

}

4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228
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;

4229 4230
	INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);

4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322
	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;

	cp->stop_cm(dev);

	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;

	if (CHIP_NUM(cp) != CHIP_NUM_5709)
		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;

		memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE);

		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
4323
		tasklet_kill(&cp->cnic_irq_task);
4324 4325 4326 4327
		free_irq(ethdev->irq_arr[0].vector, dev);
	}
}

M
Michael Chan 已提交
4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340
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;
}

4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357
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);

4358
		cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4359
		tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4360
			     (unsigned long) dev);
M
Michael Chan 已提交
4361 4362
		err = cnic_request_irq(dev);
		if (err)
4363
			return err;
M
Michael Chan 已提交
4364

4365
		while (cp->status_blk.bnx2->status_completion_producer_index &&
4366 4367 4368 4369 4370 4371 4372
		       i < 10) {
			CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
				1 << (11 + sblk_num));
			udelay(10);
			i++;
			barrier();
		}
4373
		if (cp->status_blk.bnx2->status_completion_producer_index) {
4374 4375 4376 4377 4378
			cnic_free_irq(dev);
			goto failed;
		}

	} else {
4379
		struct status_block *sblk = cp->status_blk.gen;
4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396
		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:
4397
	netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430
	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
4431
	struct cnic_uio_dev *udev = cp->udev;
4432 4433 4434 4435
	u32 cid_addr, tx_cid, sb_id;
	u32 val, offset0, offset1, offset2, offset3;
	int i;
	struct tx_bd *txbd;
M
Michael Chan 已提交
4436
	dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4437
	struct status_block *s_blk = cp->status_blk.gen;
4438 4439 4440 4441 4442

	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) {
4443
		struct status_block_msix *sblk = cp->status_blk.bnx2;
4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463

		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);
	if (CHIP_NUM(cp) == CHIP_NUM_5709) {
		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 {
4464 4465 4466
		cnic_init_context(dev, tx_cid);
		cnic_init_context(dev, tx_cid + 1);

4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477
		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);

4478
	txbd = udev->l2_ring;
4479

M
Michael Chan 已提交
4480
	buf_map = udev->l2_buf_map;
4481 4482 4483 4484
	for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
		txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
		txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
	}
M
Michael Chan 已提交
4485
	val = (u64) ring_map >> 32;
4486 4487 4488
	cnic_ctx_wr(dev, cid_addr, offset2, val);
	txbd->tx_bd_haddr_hi = val;

M
Michael Chan 已提交
4489
	val = (u64) ring_map & 0xffffffff;
4490 4491 4492 4493 4494 4495 4496 4497
	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
4498
	struct cnic_uio_dev *udev = cp->udev;
4499 4500 4501
	u32 cid_addr, sb_id, val, coal_reg, coal_val;
	int i;
	struct rx_bd *rxbd;
4502
	struct status_block *s_blk = cp->status_blk.gen;
M
Michael Chan 已提交
4503
	dma_addr_t ring_map = udev->l2_ring_map;
4504 4505 4506 4507 4508 4509 4510

	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) {
4511
		struct status_block_msix *sblk = cp->status_blk.bnx2;
4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531

		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)
4532
		val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4533
	else
4534
		val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4535 4536
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);

4537
	rxbd = udev->l2_ring + BCM_PAGE_SIZE;
4538 4539 4540 4541
	for (i = 0; i < 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
4542
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4543 4544 4545 4546 4547
		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;
	}
M
Michael Chan 已提交
4548
	val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4549 4550 4551
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
	rxbd->rx_bd_haddr_hi = val;

M
Michael Chan 已提交
4552
	val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565
	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
4566
	l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609
			      (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;
	if (CHIP_NUM(cp) != CHIP_NUM_5709)
		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;
4610
	struct status_block *sblk = cp->status_blk.gen;
4611
	u32 val, kcq_cid_addr, kwq_cid_addr;
4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635
	int err;

	cnic_set_bnx2_mac(dev);

	val = CNIC_RD(dev, BNX2_MQ_CONFIG);
	val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE;
	if (BCM_PAGE_BITS > 12)
		val |= (12 - 8)  << 4;
	else
		val |= (BCM_PAGE_BITS - 8)  << 4;

	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);

4636
	kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4637 4638 4639 4640 4641
	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;
4642
	set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4643 4644 4645 4646 4647 4648 4649 4650 4651

	if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708)
		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 |
	      (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4652
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4653 4654

	val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4655
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4656 4657

	val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4658
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4659 4660

	val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4661
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4662 4663

	val = (u32) cp->kwq_info.pgtbl_map;
4664 4665 4666 4667
	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;
4668

4669 4670 4671
	cp->kcq1.sw_prod_idx = 0;
	cp->kcq1.hw_prod_idx_ptr =
		(u16 *) &sblk->status_completion_producer_index;
4672

4673
	cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
4674 4675 4676 4677

	/* Initialize the kernel complete queue context. */
	val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
	      (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4678
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4679 4680

	val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4681
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4682 4683

	val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4684
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4685

4686 4687
	val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4688

4689 4690
	val = (u32) cp->kcq1.dma.pgtbl_map;
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4691 4692 4693

	cp->int_num = 0;
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4694
		struct status_block_msix *msblk = cp->status_blk.bnx2;
4695
		u32 sb_id = cp->status_blk_num;
4696
		u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4697

4698 4699 4700
		cp->kcq1.hw_prod_idx_ptr =
			(u16 *) &msblk->status_completion_producer_index;
		cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
4701
		cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
4702
		cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4703 4704
		cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
		cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730
	}

	/* 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) {
4731
		netdev_err(dev->netdev, "cnic_init_irq failed\n");
4732 4733 4734 4735 4736 4737 4738 4739
		cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
		cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
		return err;
	}

	return 0;
}

4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766
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;

4767
	tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4768
		     (unsigned long) dev);
M
Michael Chan 已提交
4769 4770 4771
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
		err = cnic_request_irq(dev);

4772 4773 4774
	return err;
}

4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792
static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev,
						u16 sb_id, u8 sb_index,
						u8 disable)
{

	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);
}

4793 4794 4795 4796 4797 4798
static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	u8 sb_id = cp->status_blk_num;

	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4799 4800 4801
			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 +
4802
			offsetof(struct hc_index_data, timeout), 64 / 4);
4803
	cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4804 4805 4806 4807 4808 4809
}

static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
{
}

4810 4811
static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4812 4813
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4814 4815 4816
	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;
4817
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4818
	int i;
4819
	u32 cli = cp->ethdev->iscsi_l2_client_id;
4820 4821 4822 4823
	u32 val;

	memset(txbd, 0, BCM_PAGE_SIZE);

M
Michael Chan 已提交
4824
	buf_map = udev->l2_buf_map;
4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841
	for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) {
		struct eth_tx_start_bd *start_bd = &txbd->start_bd;
		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;
		start_bd->general_data = (UNICAST_ADDRESS <<
			ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
		start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);

	}

4842
	val = (u64) ring_map >> 32;
4843 4844
	txbd->next_bd.addr_hi = cpu_to_le32(val);

4845
	data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4846

4847
	val = (u64) ring_map & 0xffffffff;
4848 4849
	txbd->next_bd.addr_lo = cpu_to_le32(val);

4850
	data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4851

4852 4853 4854
	/* 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;
4855 4856

	/* reset xstorm per client statistics */
4857
	if (cli < MAX_STAT_COUNTER_ID) {
4858 4859 4860
		data->general.statistics_zero_flg = 1;
		data->general.statistics_en_flg = 1;
		data->general.statistics_counter_id = cli;
4861
	}
4862 4863

	cp->tx_cons_ptr =
4864
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4865 4866
}

4867 4868
static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4869 4870
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4871 4872
	struct cnic_uio_dev *udev = cp->udev;
	struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4873 4874
				BCM_PAGE_SIZE);
	struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
M
Michael Chan 已提交
4875
				(udev->l2_ring + (2 * BCM_PAGE_SIZE));
4876
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4877
	int i;
4878
	u32 cli = cp->ethdev->iscsi_l2_client_id;
4879
	int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4880
	u32 val;
M
Michael Chan 已提交
4881
	dma_addr_t ring_map = udev->l2_ring_map;
4882 4883 4884 4885 4886

	/* General data */
	data->general.client_id = cli;
	data->general.activate_flg = 1;
	data->general.sp_client_id = cli;
4887 4888
	data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
	data->general.func_id = cp->pfid;
4889 4890 4891 4892 4893

	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
4894
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4895 4896 4897 4898
		rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
		rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
	}

4899
	val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4900
	rxbd->addr_hi = cpu_to_le32(val);
4901
	data->rx.bd_page_base.hi = cpu_to_le32(val);
4902

4903
	val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4904
	rxbd->addr_lo = cpu_to_le32(val);
4905
	data->rx.bd_page_base.lo = cpu_to_le32(val);
4906 4907

	rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4908
	val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4909
	rxcqe->addr_hi = cpu_to_le32(val);
4910
	data->rx.cqe_page_base.hi = cpu_to_le32(val);
4911

4912
	val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4913
	rxcqe->addr_lo = cpu_to_le32(val);
4914
	data->rx.cqe_page_base.lo = cpu_to_le32(val);
4915

4916 4917 4918 4919
	/* 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;
4920

4921
	data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4922

4923
	data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
4924
	data->rx.outer_vlan_removal_enable_flg = 1;
4925 4926 4927
	data->rx.silent_vlan_removal_flg = 1;
	data->rx.silent_vlan_value = 0;
	data->rx.silent_vlan_mask = 0xffff;
4928 4929

	cp->rx_cons_ptr =
4930
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4931
	cp->rx_cons = *cp->rx_cons_ptr;
4932 4933
}

M
Michael Chan 已提交
4934 4935 4936 4937 4938 4939 4940 4941 4942
static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 pfid = cp->pfid;

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

4943
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958
		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];
	}

4959
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971
		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];
	}
}

4972 4973 4974
static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
4975
	struct cnic_eth_dev *ethdev = cp->ethdev;
4976
	int func = CNIC_FUNC(cp), ret;
4977
	u32 pfid;
4978

4979
	dev->stats_addr = ethdev->addr_drv_info_to_mcp;
4980 4981 4982
	cp->port_mode = CHIP_PORT_MODE_NONE;

	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
4983 4984 4985 4986 4987 4988 4989
		u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);

		if (!(val & 1))
			val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN);
		else
			val = (val >> 1) & 1;

4990 4991
		if (val) {
			cp->port_mode = CHIP_4_PORT_MODE;
M
Michael Chan 已提交
4992
			cp->pfid = func >> 1;
4993
		} else {
M
Michael Chan 已提交
4994
			cp->port_mode = CHIP_2_PORT_MODE;
M
Michael Chan 已提交
4995
			cp->pfid = func & 0x6;
4996
		}
M
Michael Chan 已提交
4997 4998 4999
	} else {
		cp->pfid = func;
	}
5000 5001
	pfid = cp->pfid;

5002
	ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
5003
			       cp->iscsi_start_cid, 0);
5004 5005 5006 5007

	if (ret)
		return -ENOMEM;

5008
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
5009
		ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
5010
					cp->fcoe_start_cid, 0);
M
Michael Chan 已提交
5011 5012 5013 5014 5015

		if (ret)
			return -ENOMEM;
	}

5016 5017
	cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;

M
Michael Chan 已提交
5018
	cnic_init_bnx2x_kcq(dev);
5019 5020

	/* Only 1 EQ */
5021
	CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
5022
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5023
		CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
5024
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5025
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
5026
		cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
5027
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5028
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
5029
		(u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
5030
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5031
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
5032
		cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
5033
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5034
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
5035
		(u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
5036
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5037
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
5038
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
5039
		CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
5040
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
5041
		CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
5042
		HC_INDEX_ISCSI_EQ_CONS);
5043 5044

	CNIC_WR(dev, BAR_USTRORM_INTMEM +
5045
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5046 5047
		cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
5048
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5049 5050
		(u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);

5051 5052 5053
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
		TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);

5054 5055 5056 5057 5058 5059 5060 5061 5062
	cnic_setup_bnx2x_context(dev);

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

	return 0;
}

M
Michael Chan 已提交
5063 5064
static void cnic_init_rings(struct cnic_dev *dev)
{
M
Michael Chan 已提交
5065
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
5066
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
5067 5068 5069 5070

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

M
Michael Chan 已提交
5071 5072 5073
	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
5074
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5075
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5076 5077
		u32 cli = cp->ethdev->iscsi_l2_client_id;
		u32 cid = cp->ethdev->iscsi_l2_cid;
5078
		u32 cl_qzone_id;
5079
		struct client_init_ramrod_data *data;
5080 5081
		union l5cm_specific_data l5_data;
		struct ustorm_eth_rx_producers rx_prods = {0};
5082
		u32 off, i, *cid_ptr;
5083 5084 5085 5086 5087

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

5088 5089
		cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);

5090
		off = BAR_USTRORM_INTMEM +
5091
			(BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) ?
M
Michael Chan 已提交
5092 5093
			 USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
			 USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
5094 5095

		for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5096
			CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5097

5098 5099
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

M
Michael Chan 已提交
5100
		data = udev->l2_buf;
5101
		cid_ptr = udev->l2_buf + 12;
5102 5103 5104 5105 5106 5107

		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
5108 5109
		l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
		l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5110

M
Michael Chan 已提交
5111 5112
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);

5113
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5114
			cid, ETH_CONNECTION_TYPE, &l5_data);
5115

5116 5117 5118 5119 5120 5121 5122 5123
		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");
5124
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5125
		cnic_ring_ctl(dev, cid, cli, 1);
5126
		*cid_ptr = cid;
M
Michael Chan 已提交
5127 5128 5129 5130 5131
	}
}

static void cnic_shutdown_rings(struct cnic_dev *dev)
{
M
Michael Chan 已提交
5132
	struct cnic_local *cp = dev->cnic_priv;
5133 5134
	struct cnic_uio_dev *udev = cp->udev;
	void *rx_ring;
M
Michael Chan 已提交
5135 5136 5137 5138

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

M
Michael Chan 已提交
5139 5140
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
		cnic_shutdown_bnx2_rx_ring(dev);
5141
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5142 5143
		u32 cli = cp->ethdev->iscsi_l2_client_id;
		u32 cid = cp->ethdev->iscsi_l2_cid;
M
Michael Chan 已提交
5144
		union l5cm_specific_data l5_data;
5145
		int i;
5146

5147
		cnic_ring_ctl(dev, cid, cli, 0);
M
Michael Chan 已提交
5148

5149 5150
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

M
Michael Chan 已提交
5151 5152 5153
		l5_data.phy_address.lo = cli;
		l5_data.phy_address.hi = 0;
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5154
			cid, ETH_CONNECTION_TYPE, &l5_data);
5155 5156 5157 5158 5159 5160 5161 5162
		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");
5163
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5164 5165

		memset(&l5_data, 0, sizeof(l5_data));
5166
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5167
			cid, NONE_CONNECTION_TYPE, &l5_data);
5168
		msleep(10);
M
Michael Chan 已提交
5169
	}
M
Michael Chan 已提交
5170
	clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5171 5172
	rx_ring = udev->l2_ring + BCM_PAGE_SIZE;
	memset(rx_ring, 0, BCM_PAGE_SIZE);
M
Michael Chan 已提交
5173 5174
}

5175
static int cnic_register_netdev(struct cnic_dev *dev)
5176 5177 5178 5179 5180
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err;

5181 5182 5183 5184 5185
	if (!ethdev)
		return -ENODEV;

	if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
		return 0;
5186 5187

	err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5188
	if (err)
5189
		netdev_err(dev->netdev, "register_cnic failed\n");
5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212

	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;
5213 5214 5215 5216

	dev->regview = ethdev->io_base;
	pci_dev_get(dev->pcidev);
	cp->func = PCI_FUNC(dev->pcidev->devfn);
5217
	cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5218 5219 5220 5221
	cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;

	err = cp->alloc_resc(dev);
	if (err) {
5222
		netdev_err(dev->netdev, "allocate resource failure\n");
5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261
		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);
}

5262 5263 5264 5265 5266 5267

static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

	cnic_free_irq(dev);
5268
	*cp->kcq1.hw_prod_idx_ptr = 0;
5269
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5270
		CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5271
	CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5272 5273 5274
	cnic_free_resc(dev);
}

5275 5276 5277 5278
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;
5279
		int i = 0;
5280

5281 5282 5283
		/* Need to wait for the ring shutdown event to complete
		 * before clearing the CNIC_UP flag.
		 */
M
Michael Chan 已提交
5284
		while (cp->udev->uio_dev != -1 && i < 15) {
5285 5286 5287
			msleep(100);
			i++;
		}
5288
		cnic_shutdown_rings(dev);
5289
		clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5290
		RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306
		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)
5307
		netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5308

5309
	netdev_info(dev->netdev, "Removed CNIC device\n");
5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324
	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);

	cdev = kzalloc(alloc_size , GFP_KERNEL);
	if (cdev == NULL) {
5325
		netdev_err(dev, "allocate dev struct failure\n");
5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341
		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);

5342
	netdev_info(dev, "Added CNIC device\n");
5343 5344 5345 5346 5347 5348 5349 5350 5351 5352

	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;
	struct cnic_eth_dev *ethdev = NULL;
5353
	struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5354

5355
	probe = symbol_get(bnx2_cnic_probe);
5356 5357
	if (probe) {
		ethdev = (*probe)(dev);
5358
		symbol_put(bnx2_cnic_probe);
5359 5360 5361 5362 5363 5364 5365 5366 5367 5368
	}
	if (!ethdev)
		return NULL;

	pdev = ethdev->pdev;
	if (!pdev)
		return NULL;

	dev_hold(dev);
	pci_dev_get(pdev);
5369 5370 5371 5372 5373
	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;
5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386
	}
	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
5387
	cp->chip_id = ethdev->chip_id;
5388

5389 5390
	cdev->max_iscsi_conn = ethdev->max_iscsi_conn;

5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408
	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;
}

5409 5410 5411 5412 5413 5414 5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441
static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
{
	struct pci_dev *pdev;
	struct cnic_dev *cdev;
	struct cnic_local *cp;
	struct cnic_eth_dev *ethdev = NULL;
	struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;

	probe = symbol_get(bnx2x_cnic_probe);
	if (probe) {
		ethdev = (*probe)(dev);
		symbol_put(bnx2x_cnic_probe);
	}
	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
5442
	cp->chip_id = ethdev->chip_id;
5443

5444 5445
	cdev->stats_addr = ethdev->addr_drv_info_to_mcp;

5446 5447
	if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
		cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5448
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
5449 5450 5451
	    !(ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE))
		cdev->max_fcoe_conn = ethdev->max_fcoe_conn;

5452 5453 5454
	if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
		cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;

5455 5456
	memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);

5457 5458 5459 5460 5461 5462 5463 5464 5465 5466
	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;
5467
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
M
Michael Chan 已提交
5468 5469 5470
		cp->ack_int = cnic_ack_bnx2x_e2_msix;
	else
		cp->ack_int = cnic_ack_bnx2x_msix;
5471 5472 5473 5474
	cp->close_conn = cnic_close_bnx2x_conn;
	return cdev;
}

5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485
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);
5486 5487
		if (!strcmp(drvinfo.driver, "bnx2x"))
			cdev = init_bnx2x_cnic(dev);
5488 5489 5490 5491 5492 5493 5494 5495 5496
		if (cdev) {
			write_lock(&cnic_dev_lock);
			list_add(&cdev->list, &cnic_dev_list);
			write_unlock(&cnic_dev_lock);
		}
	}
	return cdev;
}

5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517
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();
}

5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529
/**
 * netdev event handler
 */
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);

5530
	if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) {
5531 5532 5533 5534 5535 5536 5537 5538 5539 5540 5541 5542 5543 5544
		/* 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);
5545

5546
		if (event == NETDEV_UP || (new_dev && netif_running(netdev))) {
5547 5548 5549 5550
			if (cnic_register_netdev(dev) != 0) {
				cnic_put(dev);
				goto done;
			}
5551 5552 5553 5554
			if (!cnic_start_hw(dev))
				cnic_ulp_start(dev);
		}

5555
		cnic_rcv_netevent(cp, event, 0);
5556 5557 5558 5559

		if (event == NETDEV_GOING_DOWN) {
			cnic_ulp_stop(dev);
			cnic_stop_hw(dev);
5560
			cnic_unregister_netdev(dev);
5561 5562 5563 5564 5565 5566 5567 5568 5569 5570
		} 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);
5571 5572 5573 5574 5575 5576 5577 5578 5579 5580 5581 5582 5583
	} 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);
			}
		}
5584 5585 5586 5587 5588 5589 5590 5591 5592 5593 5594 5595
	}
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;
5596
	struct cnic_uio_dev *udev;
5597 5598 5599 5600 5601 5602 5603 5604 5605

	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);
5606
		cnic_unregister_netdev(dev);
5607 5608 5609
		list_del_init(&dev->list);
		cnic_free_dev(dev);
	}
5610 5611 5612 5613 5614
	while (!list_empty(&cnic_udev_list)) {
		udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
				  list);
		cnic_free_uio(udev);
	}
5615 5616 5617 5618 5619 5620
}

static int __init cnic_init(void)
{
	int rc = 0;

5621
	pr_info("%s", version);
5622 5623 5624 5625 5626 5627 5628

	rc = register_netdevice_notifier(&cnic_netdev_notifier);
	if (rc) {
		cnic_release();
		return rc;
	}

5629 5630 5631 5632 5633 5634 5635
	cnic_wq = create_singlethread_workqueue("cnic_wq");
	if (!cnic_wq) {
		cnic_release();
		unregister_netdevice_notifier(&cnic_netdev_notifier);
		return -ENOMEM;
	}

5636 5637 5638 5639 5640 5641 5642
	return 0;
}

static void __exit cnic_exit(void)
{
	unregister_netdevice_notifier(&cnic_netdev_notifier);
	cnic_release();
5643
	destroy_workqueue(cnic_wq);
5644 5645 5646 5647
}

module_init(cnic_init);
module_exit(cnic_exit);