cnic.c 124.6 KB
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/* cnic.c: Broadcom CNIC core network driver.
 *
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 * Copyright (c) 2006-2010 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>
#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 "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);

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);

static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];

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;
}

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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	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;
	}

	rcu_read_lock();
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	ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
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	if (ulp_ops)
		ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len);
	rcu_read_unlock();
	return 0;
}

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);
		if (cnic_in_use(csk)) {
			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));
			if (is_valid_ether_addr(csk->ha))
				cnic_cm_set_pg(csk);
		}
		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;
}

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static void cnic_uio_stop(void)
{
	struct cnic_dev *dev;

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

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		cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
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	}
	read_unlock(&cnic_dev_lock);
}

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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);
	if (cnic_ulp_tbl[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();
	read_lock(&cnic_dev_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);
	}
	read_unlock(&cnic_dev_lock);
	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[ulp_type];
	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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	if (ulp_type == CNIC_ULP_ISCSI)
		cnic_uio_stop();

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	rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);

	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);
	if (cnic_ulp_tbl[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;
	ulp_ops = cnic_ulp_tbl[ulp_type];
	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);

	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])) {
		rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
		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);

	synchronize_rcu();

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	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]))
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		netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
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	return 0;
}
EXPORT_SYMBOL(cnic_unregister_driver);

static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
{
	id_tbl->start = start_id;
	id_tbl->max = size;
	id_tbl->next = 0;
	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]) {
675 676
			dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
					  dma->pg_arr[i], dma->pg_map_arr[i]);
677 678 679 680
			dma->pg_arr[i] = NULL;
		}
	}
	if (dma->pgtbl) {
681 682
		dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
				  dma->pgtbl, dma->pgtbl_map);
683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703
		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;
	u32 *page_table = dma->pgtbl;

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in big endian format. */
		*page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
		page_table++;
		*page_table = (u32) dma->pg_map_arr[i];
		page_table++;
	}
}

704 705 706 707 708 709 710 711 712 713 714 715 716 717
static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
{
	int i;
	u32 *page_table = dma->pgtbl;

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in little endian format. */
		*page_table = dma->pg_map_arr[i] & 0xffffffff;
		page_table++;
		*page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
		page_table++;
	}
}

718 719 720 721 722 723 724 725 726 727 728 729 730 731 732
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++) {
733 734 735 736
		dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
						    BCM_PAGE_SIZE,
						    &dma->pg_map_arr[i],
						    GFP_ATOMIC);
737 738 739 740 741 742 743 744
		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);
745 746
	dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
					&dma->pgtbl_map, GFP_ATOMIC);
747 748 749 750 751 752 753 754 755 756 757 758
	if (dma->pgtbl == NULL)
		goto error;

	cp->setup_pgtbl(dev, dma);

	return 0;

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

M
Michael Chan 已提交
759 760 761 762 763 764 765
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) {
766 767 768
			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
769 770 771 772 773
			cp->ctx_arr[i].ctx = NULL;
		}
	}
}

774
static void __cnic_free_uio(struct cnic_uio_dev *udev)
775
{
776
	uio_unregister_device(&udev->cnic_uinfo);
M
Michael Chan 已提交
777

778 779 780 781
	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;
782 783
	}

784 785 786 787
	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;
788
	}
789 790 791

	pci_dev_put(udev->pdev);
	kfree(udev);
M
Michael Chan 已提交
792 793
}

794
static void cnic_free_uio(struct cnic_uio_dev *udev)
M
Michael Chan 已提交
795
{
796
	if (!udev)
M
Michael Chan 已提交
797 798
		return;

799 800 801
	write_lock(&cnic_dev_lock);
	list_del_init(&udev->list);
	write_unlock(&cnic_dev_lock);
802
	__cnic_free_uio(udev);
M
Michael Chan 已提交
803 804 805 806 807
}

static void cnic_free_resc(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
808
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
809

810
	if (udev) {
811
		udev->dev = NULL;
812
		cp->udev = NULL;
M
Michael Chan 已提交
813
	}
814

M
Michael Chan 已提交
815
	cnic_free_context(dev);
816 817 818 819 820 821 822
	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->conn_buf_info);
	cnic_free_dma(dev, &cp->kwq_info);
823
	cnic_free_dma(dev, &cp->kwq_16_data_info);
824
	cnic_free_dma(dev, &cp->kcq1.dma);
825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871
	kfree(cp->iscsi_tbl);
	cp->iscsi_tbl = NULL;
	kfree(cp->ctx_tbl);
	cp->ctx_tbl = NULL;

	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 =
872 873 874 875
				dma_alloc_coherent(&dev->pcidev->dev,
						   BCM_PAGE_SIZE,
						   &cp->ctx_arr[i].mapping,
						   GFP_KERNEL);
876 877 878 879 880 881 882
			if (cp->ctx_arr[i].ctx == NULL)
				return -ENOMEM;
		}
	}
	return 0;
}

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
static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info)
{
	int err, i, is_bnx2 = 0;
	struct kcqe **kcq;

	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags))
		is_bnx2 = 1;

	err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, is_bnx2);
	if (err)
		return err;

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

	if (is_bnx2)
		return 0;

	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;
}

914
static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
915 916
{
	struct cnic_local *cp = dev->cnic_priv;
917 918
	struct cnic_uio_dev *udev;

919 920 921 922 923 924 925 926 927 928 929
	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);

930 931 932 933 934
	udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
	if (!udev)
		return -ENOMEM;

	udev->uio_dev = -1;
935

936 937 938 939 940 941 942
	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)
943 944
		return -ENOMEM;

945 946 947 948 949 950
	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)
951 952
		return -ENOMEM;

953 954 955 956 957 958
	write_lock(&cnic_dev_lock);
	list_add(&udev->list, &cnic_udev_list);
	write_unlock(&cnic_dev_lock);

	pci_dev_get(udev->pdev);

959 960
	cp->udev = udev;

961 962 963
	return 0;
}

964 965
static int cnic_init_uio(struct cnic_dev *dev)
{
966
	struct cnic_local *cp = dev->cnic_priv;
967
	struct cnic_uio_dev *udev = cp->udev;
968
	struct uio_info *uinfo;
969
	int ret = 0;
970

971
	if (!udev)
972
		return -ENOMEM;
973

974 975
	uinfo = &udev->cnic_uinfo;

976 977 978 979 980
	uinfo->mem[0].addr = dev->netdev->base_addr;
	uinfo->mem[0].internal_addr = dev->regview;
	uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
	uinfo->mem[0].memtype = UIO_MEM_PHYS;

981
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
982
		uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
983
					PAGE_MASK;
984 985 986 987 988 989
		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";
990 991 992
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
		uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
			PAGE_MASK;
993
		uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
994 995

		uinfo->name = "bnx2x_cnic";
996 997
	}

998 999
	uinfo->mem[1].memtype = UIO_MEM_LOGICAL;

1000 1001
	uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
	uinfo->mem[2].size = udev->l2_ring_size;
1002 1003
	uinfo->mem[2].memtype = UIO_MEM_LOGICAL;

1004 1005
	uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
	uinfo->mem[3].size = udev->l2_buf_size;
1006 1007 1008 1009 1010 1011 1012 1013
	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;

1014 1015 1016
	if (udev->uio_dev == -1) {
		if (!uinfo->priv) {
			uinfo->priv = udev;
1017

1018 1019 1020 1021 1022
			ret = uio_register_device(&udev->pdev->dev, uinfo);
		}
	} else {
		cnic_init_rings(dev);
	}
1023

1024
	return ret;
1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
}

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;

1037
	ret = cnic_alloc_kcq(dev, &cp->kcq1);
1038 1039 1040 1041 1042 1043 1044
	if (ret)
		goto error;

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

1045
	ret = cnic_alloc_uio_rings(dev, 2);
1046 1047 1048
	if (ret)
		goto error;

1049
	ret = cnic_init_uio(dev);
1050 1051
	if (ret)
		goto error;
1052 1053 1054 1055 1056 1057 1058 1059

	return 0;

error:
	cnic_free_resc(dev);
	return ret;
}

1060 1061 1062 1063
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;
1064
	int total_mem, blks, i;
1065

1066
	total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1067 1068 1069 1070 1071 1072 1073
	blks = total_mem / ctx_blk_size;
	if (total_mem % ctx_blk_size)
		blks++;

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

1074
	cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088
	if (cp->ctx_arr == NULL)
		return -ENOMEM;

	cp->ctx_blks = blks;
	cp->ctx_blk_size = ctx_blk_size;
	if (BNX2X_CHIP_IS_E1H(cp->chip_id))
		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 =
1089 1090 1091
			dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
					   &cp->ctx_arr[i].mapping,
					   GFP_KERNEL);
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109
		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;
1110 1111
	struct cnic_eth_dev *ethdev = cp->ethdev;
	u32 start_cid = ethdev->starting_cid;
1112 1113 1114
	int i, j, n, ret, pages;
	struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;

1115 1116
	cp->iro_arr = ethdev->iro_arr;

1117 1118 1119 1120 1121 1122 1123 1124 1125
	cp->max_cid_space = MAX_ISCSI_TBL_SZ;
	cp->iscsi_start_cid = start_cid;
	if (start_cid < BNX2X_ISCSI_START_CID) {
		u32 delta = BNX2X_ISCSI_START_CID - start_cid;

		cp->iscsi_start_cid = BNX2X_ISCSI_START_CID;
		cp->max_cid_space += delta;
	}

1126 1127 1128 1129 1130 1131
	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) *
1132
				cp->max_cid_space, GFP_KERNEL);
1133 1134 1135 1136 1137 1138 1139 1140
	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;
	}

1141
	pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1142 1143 1144 1145 1146 1147 1148
		PAGE_SIZE;

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

	n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1149
	for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1150 1151 1152 1153 1154 1155 1156 1157 1158 1159
		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++;
	}

1160
	ret = cnic_alloc_kcq(dev, &cp->kcq1);
1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182
	if (ret)
		goto error;

	pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
			   BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
	ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
	if (ret)
		goto error;

	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;

1183
	ret = cnic_alloc_uio_rings(dev, 4);
1184 1185 1186
	if (ret)
		goto error;

1187
	ret = cnic_init_uio(dev);
1188 1189 1190 1191 1192 1193 1194 1195 1196 1197
	if (ret)
		goto error;

	return 0;

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

1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215
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) &&
1216
	    !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1217 1218 1219 1220
		spin_unlock_bh(&cp->cnic_ulp_lock);
		return -EAGAIN;
	}

1221
	clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238

	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;
}

1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260
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];
	int ret;

	kwqe.hdr.conn_and_cmd_data =
		cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1261
			     BNX2X_HW_CID(cp, cid)));
1262
	kwqe.hdr.type = cpu_to_le16(type);
1263
	kwqe.hdr.reserved1 = 0;
1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297
	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;

	return -EBUSY;
}

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;
1298 1299
	int hq_bds, pages;
	u32 pfid = cp->pfid;
1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315

	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 */
1316
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1317
		  req1->rq_num_wqes);
1318
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1319 1320
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1321
		 TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1322
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1323
		  TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1324 1325 1326 1327
		  req1->num_tasks_per_conn);

	/* init Ustorm RAM */
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1328
		  USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1329
		  req1->rq_buffer_size);
1330
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1331 1332
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1333
		 USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1334
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1335
		  USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1336
		  req1->num_tasks_per_conn);
1337
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1338
		  req1->rq_num_wqes);
1339
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1340
		  req1->cq_num_wqes);
1341
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1342 1343 1344
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Xstorm RAM */
1345
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1346 1347
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1348
		 XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1349
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1350
		  XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1351
		  req1->num_tasks_per_conn);
1352
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1353
		  hq_bds);
1354
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1355
		  req1->num_tasks_per_conn);
1356
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1357 1358 1359
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Cstorm RAM */
1360
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1361 1362
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1363
		 CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1364
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1365
		  CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1366
		  req1->num_tasks_per_conn);
1367
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1368
		  req1->cq_num_wqes);
1369
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1370 1371 1372 1373 1374 1375 1376 1377 1378
		  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;
1379
	u32 pfid = cp->pfid;
1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390
	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 +
1391
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1392
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1393
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1394 1395 1396
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1397
		  USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1398
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1399
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1400
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1401
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1402 1403 1404
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1405
		  CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512

	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);
	}
	cnic_free_id(&cp->cid_tbl, ctx->cid);
	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;

	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;
1513
	u32 hw_cid = BNX2X_HW_CID(cp, cid);
1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 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
	struct iscsi_context *ictx;
	struct regpair context_addr;
	int i, j, n = 2, n_max;

	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;

	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;
1579 1580
	ictx->tstorm_st_context.tcp.ooo_support_mode =
		TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1581

1582
	ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1583 1584

	ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1585
		req2->rq_page_table_addr_lo;
1586
	ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1587
		req2->rq_page_table_addr_hi;
1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680
	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;
1681
	struct cnic_context *ctx;
1682 1683 1684
	struct iscsi_kcqe kcqe;
	struct kcqe *cqes[1];
	u32 l5_cid;
1685
	int ret = 0;
1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708

	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;
	}
	*work = 2 + req2->num_additional_wqes;;

	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;

1709 1710 1711 1712 1713 1714 1715
	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;
	}

1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733
	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;
1734
	kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
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

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


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;
}

1767
static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1768 1769 1770
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1771 1772
	union l5cm_specific_data l5_data;
	int ret;
1773
	u32 hw_cid, type;
1774 1775 1776 1777

	init_waitqueue_head(&ctx->waitq);
	ctx->wait_cond = 0;
	memset(&l5_data, 0, sizeof(l5_data));
1778 1779 1780 1781 1782 1783 1784 1785 1786
	hw_cid = BNX2X_HW_CID(cp, ctx->cid);
	type = (NONE_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
		& SPE_HDR_CONN_TYPE;
	type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
		 SPE_HDR_FUNCTION_ID);

	ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
				  hw_cid, type, &l5_data);

1787 1788 1789
	if (ret == 0)
		wait_event(ctx->waitq, ctx->wait_cond);

1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806
	return ret;
}

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;

1807 1808 1809 1810 1811 1812 1813 1814 1815 1816
	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;
	}
1817 1818 1819

	ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);

1820 1821 1822 1823
skip_cfc_delete:
	cnic_free_bnx2x_conn_resc(dev, l5_cid);

	atomic_dec(&cp->iscsi_conn);
1824
	clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
1825

1826
destroy_reply:
1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890
	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);

	return ret;
}

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->rcv_buf = kwqe3->rcv_buf;
	tstorm_buf->snd_buf = kwqe3->snd_buf;
	tstorm_buf->max_rt_time = 0xffffffff;
}

static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
1891
	u32 pfid = cp->pfid;
1892 1893 1894
	u8 *mac = dev->mac_addr;

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1895
		 XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
1896
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1897
		 XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
1898
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1899
		 XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
1900
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1901
		 XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
1902
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1903
		 XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
1904
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1905
		 XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
1906 1907

	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1908
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
1909
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1910
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1911 1912
		 mac[4]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1913
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
1914
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1915
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
1916 1917
		 mac[2]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1918
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 2,
1919 1920
		 mac[1]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1921
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 3,
1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936
		 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 +
1937
		 XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
1938 1939

	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1940
		  TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973
}

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) {
1974
		netdev_err(dev->netdev, "conn_buf size too big\n");
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 2009 2010 2011 2012 2013 2014
		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 +
2015
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2016 2017 2018 2019 2020 2021 2022

	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)
2023
		set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 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 2091 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 2132 2133

	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;
}

static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
				   u32 num_wqes)
{
	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;
2134 2135
			netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
				   opcode);
2136 2137 2138
			break;
		}
		if (ret < 0)
2139 2140
			netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
				   opcode);
2141 2142 2143 2144 2145
		i += work;
	}
	return 0;
}

2146 2147 2148
static void service_kcqes(struct cnic_dev *dev, int num_cqes)
{
	struct cnic_local *cp = dev->cnic_priv;
2149
	int i, j, comp = 0;
2150 2151 2152 2153 2154 2155 2156 2157 2158 2159

	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;
		u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;

		if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2160
			comp++;
2161 2162 2163 2164 2165 2166 2167 2168

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

			if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
				break;

			if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2169
				comp++;
2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181
			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;
		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 {
2182 2183
			netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
				   kcqe_op_flag);
2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198
			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;
	}
2199 2200
	if (unlikely(comp))
		cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2201 2202
}

2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213
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)
2214
{
2215 2216 2217 2218 2219
	idx++;
	if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
		idx++;

	return idx;
2220 2221
}

2222
static u16 cnic_bnx2x_hw_idx(u16 idx)
2223
{
2224 2225
	if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
		idx++;
2226 2227 2228
	return idx;
}

2229
static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2230 2231
{
	struct cnic_local *cp = dev->cnic_priv;
2232
	u16 i, ri, hw_prod, last;
2233 2234 2235
	struct kcqe *kcqe;
	int kcqe_cnt = 0, last_cnt = 0;

2236
	i = ri = last = info->sw_prod_idx;
2237
	ri &= MAX_KCQ_IDX;
2238 2239
	hw_prod = *info->hw_prod_idx_ptr;
	hw_prod = cp->hw_idx(hw_prod);
2240 2241

	while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
2242
		kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2243 2244 2245 2246 2247 2248 2249 2250 2251
		cp->completed_kcq[kcqe_cnt++] = kcqe;
		i = cp->next_idx(i);
		ri = i & MAX_KCQ_IDX;
		if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
			last_cnt = kcqe_cnt;
			last = i;
		}
	}

2252
	info->sw_prod_idx = last;
2253 2254 2255
	return last_cnt;
}

2256 2257 2258
static int cnic_l2_completion(struct cnic_local *cp)
{
	u16 hw_cons, sw_cons;
2259
	struct cnic_uio_dev *udev = cp->udev;
2260
	union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
2261
					(udev->l2_ring + (2 * BCM_PAGE_SIZE));
2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289
	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
2290
static void cnic_chk_pkt_rings(struct cnic_local *cp)
2291
{
2292
	u16 rx_cons, tx_cons;
2293
	int comp = 0;
2294

2295
	if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2296 2297
		return;

2298 2299
	rx_cons = *cp->rx_cons_ptr;
	tx_cons = *cp->tx_cons_ptr;
2300
	if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2301 2302 2303
		if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
			comp = cnic_l2_completion(cp);

2304 2305
		cp->tx_cons = tx_cons;
		cp->rx_cons = rx_cons;
2306

2307 2308
		if (cp->udev)
			uio_event_notify(&cp->udev->cnic_uinfo);
2309
	}
2310 2311
	if (comp)
		clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2312 2313
}

2314
static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2315 2316
{
	struct cnic_local *cp = dev->cnic_priv;
2317
	u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2318 2319 2320 2321
	int kcqe_cnt;

	cp->kwq_con_idx = *cp->kwq_con_idx_ptr;

2322
	while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2323 2324 2325 2326 2327

		service_kcqes(dev, kcqe_cnt);

		/* Tell compiler that status_blk fields can change. */
		barrier();
2328
		if (status_idx != *cp->kcq1.status_idx_ptr) {
2329
			status_idx = (u16) *cp->kcq1.status_idx_ptr;
2330 2331 2332 2333 2334
			cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
		} else
			break;
	}

2335
	CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2336

M
Michael Chan 已提交
2337
	cnic_chk_pkt_rings(cp);
2338

2339 2340 2341
	return status_idx;
}

2342
static int cnic_service_bnx2(void *data, void *status_blk)
2343
{
2344
	struct cnic_dev *dev = data;
2345
	struct cnic_local *cp = dev->cnic_priv;
2346
	u32 status_idx = *cp->kcq1.status_idx_ptr;
2347

2348 2349
	if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
		return status_idx;
2350

2351 2352
	return cnic_service_bnx2_queues(dev);
}
2353

2354 2355 2356 2357
static void cnic_service_bnx2_msix(unsigned long data)
{
	struct cnic_dev *dev = (struct cnic_dev *) data;
	struct cnic_local *cp = dev->cnic_priv;
2358

2359
	cp->last_status_idx = cnic_service_bnx2_queues(dev);
2360 2361 2362 2363 2364

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

2365 2366 2367
static void cnic_doirq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
2368
	u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
2369 2370 2371

	if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
		prefetch(cp->status_blk.gen);
2372
		prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2373 2374 2375 2376 2377

		tasklet_schedule(&cp->cnic_irq_task);
	}
}

2378 2379 2380 2381 2382 2383 2384 2385
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);

2386
	cnic_doirq(dev);
2387 2388 2389 2390

	return IRQ_HANDLED;
}

2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412
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));
}

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

2413
	cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
2414 2415 2416
			   IGU_INT_DISABLE, 0);
}

2417
static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
2418
{
2419
	u32 last_status = *info->status_idx_ptr;
2420 2421
	int kcqe_cnt;

2422
	while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
2423 2424 2425 2426 2427

		service_kcqes(dev, kcqe_cnt);

		/* Tell compiler that sblk fields can change. */
		barrier();
2428
		if (last_status == *info->status_idx_ptr)
2429 2430
			break;

2431
		last_status = *info->status_idx_ptr;
2432
	}
2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445
	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;
	u32 status_idx;

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

	status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
2446

2447
	CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
2448
	cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
2449 2450 2451 2452 2453 2454 2455 2456
			   status_idx, IGU_INT_ENABLE, 1);
}

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

2457 2458
	if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
		cnic_doirq(dev);
2459

2460
	cnic_chk_pkt_rings(cp);
2461 2462 2463 2464

	return 0;
}

2465 2466 2467 2468 2469
static void cnic_ulp_stop(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int if_type;

2470
	cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
2471

2472 2473 2474
	for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
		struct cnic_ulp_ops *ulp_ops;

2475 2476 2477 2478
		mutex_lock(&cnic_lock);
		ulp_ops = cp->ulp_ops[if_type];
		if (!ulp_ops) {
			mutex_unlock(&cnic_lock);
2479
			continue;
2480 2481 2482
		}
		set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
		mutex_unlock(&cnic_lock);
2483 2484 2485

		if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
			ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
2486 2487

		clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498
	}
}

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;

2499 2500 2501 2502
		mutex_lock(&cnic_lock);
		ulp_ops = cp->ulp_ops[if_type];
		if (!ulp_ops || !ulp_ops->cnic_start) {
			mutex_unlock(&cnic_lock);
2503
			continue;
2504 2505 2506
		}
		set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
		mutex_unlock(&cnic_lock);
2507 2508 2509

		if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
			ulp_ops->cnic_start(cp->ulp_handle[if_type]);
2510 2511

		clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535
	}
}

static int cnic_ctl(void *data, struct cnic_ctl_info *info)
{
	struct cnic_dev *dev = data;

	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;
2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548
	case CNIC_CTL_COMPLETION_CMD: {
		u32 cid = BNX2X_SW_CID(info->data.comp.cid);
		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];

			ctx->wait_cond = 1;
			wake_up(&ctx->waitq);
		}
		break;
	}
2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562
	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;

2563 2564 2565 2566
		mutex_lock(&cnic_lock);
		ulp_ops = cnic_ulp_tbl[i];
		if (!ulp_ops || !ulp_ops->cnic_init) {
			mutex_unlock(&cnic_lock);
2567
			continue;
2568 2569 2570
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
2571 2572 2573 2574

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

2575
		ulp_put(ulp_ops);
2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586
	}
}

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;

2587 2588 2589 2590
		mutex_lock(&cnic_lock);
		ulp_ops = cnic_ulp_tbl[i];
		if (!ulp_ops || !ulp_ops->cnic_exit) {
			mutex_unlock(&cnic_lock);
2591
			continue;
2592 2593 2594
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
2595 2596 2597 2598

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

2599
		ulp_put(ulp_ops);
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
	}
}

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;
2633
	l4kwqe->ipid_start = DEF_IPID_START;
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	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;

2818 2819 2820 2821 2822 2823 2824
	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;
	}

2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 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 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902
	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;

		cnic_free_id(&cp->csk_port_tbl, csk->src_port);
		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)
{
2903
#if defined(CONFIG_INET)
2904 2905 2906 2907 2908 2909 2910 2911 2912
	struct flowi fl;
	int err;
	struct rtable *rt;

	memset(&fl, 0, sizeof(fl));
	fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;

	err = ip_route_output_key(&init_net, &rt, &fl);
	if (!err)
2913
		*dst = &rt->dst;
2914
	return err;
2915 2916 2917
#else
	return -ENETUNREACH;
#endif
2918 2919 2920 2921 2922
}

static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
			     struct dst_entry **dst)
{
2923
#if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985
	struct flowi fl;

	memset(&fl, 0, sizeof(fl));
	ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
	if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
		fl.oif = dst_addr->sin6_scope_id;

	*dst = ip6_route_output(&init_net, NULL, &fl);
	if (*dst)
		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;
2986 2987
	int is_v6, rc = 0;
	struct dst_entry *dst = NULL;
2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003
	struct net_device *realdev;
	u32 local_port;

	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);
3004
		cnic_get_v6_route(&saddr->remote.v6, &dst);
3005 3006 3007 3008 3009 3010 3011

		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 {
3012
		cnic_get_v4_route(&saddr->remote.v4, &dst);
3013 3014 3015 3016 3017 3018

		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;
	}

3019 3020 3021 3022 3023 3024 3025 3026 3027
	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);
		}
	}
3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084

	if (local_port >= CNIC_LOCAL_PORT_MIN &&
	    local_port < CNIC_LOCAL_PORT_MAX) {
		if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
			local_port = 0;
	} else
		local_port = 0;

	if (!local_port) {
		local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
		if (local_port == -1) {
			rc = -ENOMEM;
			goto err_out;
		}
	}
	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)
{
	int err = 0;

	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;
3085
	u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097

	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);
3098 3099
	if (csk->state != opcode)
		return -EALREADY;
3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111

	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);
3112 3113
	} else {
		return -EALREADY;
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	}
	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;
	}
3167 3168 3169 3170 3171 3172 3173 3174
	/* 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;
	}

3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211
	csk->pg_cid = kcqe->pg_cid;
	set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
	cnic_cm_conn_req(csk);

done:
	csk_put(csk);
}

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;

	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) {
3212 3213 3214 3215 3216 3217 3218
	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;
3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230
	case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
		if (l4kcqe->status == 0)
			set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);

		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:
3231 3232
	case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
	case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283
		cp->close_conn(csk, opcode);
		break;

	case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
		cnic_cm_upcall(cp, csk, opcode);
		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;

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

	if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
			     CNIC_LOCAL_PORT_MIN)) {
		cnic_cm_free_mem(dev);
		return -ENOMEM;
	}
	return 0;
}

static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
{
3284 3285 3286 3287
	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;
3288
	}
3289 3290 3291

	/* 1. If event opcode matches the expected event in csk->state
	 * 2. If the expected event is CLOSE_COMP, we accept any event
3292 3293
	 * 3. If the expected event is 0, meaning the connection was never
	 *    never established, we accept the opcode from cm_abort.
3294
	 */
3295 3296 3297 3298 3299
	if (opcode == csk->state || csk->state == 0 ||
	    csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) {
		if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
			if (csk->state == 0)
				csk->state = opcode;
3300
			return 1;
3301
		}
3302
	}
3303 3304 3305 3306 3307 3308 3309 3310
	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;

3311 3312 3313 3314 3315
	if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
		cnic_cm_upcall(cp, csk, opcode);
		return;
	}

3316
	clear_bit(SK_F_CONNECT_START, &csk->flags);
3317
	cnic_close_conn(csk);
3318
	csk->state = opcode;
3319
	cnic_cm_upcall(cp, csk, opcode);
3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334
}

static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
{
}

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

	get_random_bytes(&seed, 4);
	cnic_ctx_wr(dev, 45, 0, seed);
	return 0;
}

3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347
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:
3348 3349 3350 3351 3352 3353
		if (cnic_ready_to_close(csk, opcode)) {
			if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
				cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
			else
				close_complete = 1;
		}
3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375
		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)
{
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
	struct cnic_local *cp = dev->cnic_priv;
	int i;

	if (!cp->ctx_tbl)
		return;

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

	for (i = 0; i < cp->max_cid_space; i++) {
		struct cnic_context *ctx = &cp->ctx_tbl[i];

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

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

	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));
3402 3403 3404 3405 3406
}

static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
3407
	u32 pfid = cp->pfid;
3408
	u32 port = CNIC_PORT(cp);
3409 3410 3411 3412 3413

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

	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
3414
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
3415 3416

	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3417
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
3418
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3419
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
3420 3421 3422
		DEF_MAX_DA_COUNT);

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3423
		 XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
3424
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3425
		 XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
3426
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
3427
		 XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
3428
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
3429
		XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
3430

3431
	CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
3432 3433 3434 3435
		DEF_MAX_CWND);
	return 0;
}

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
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;

	for (i = 0; i < cp->max_cid_space; i++) {
		struct cnic_context *ctx = &cp->ctx_tbl[i];

		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;

		cnic_bnx2x_destroy_ramrod(dev, i);

		cnic_free_bnx2x_conn_resc(dev, i);
		if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
			atomic_dec(&cp->iscsi_conn);

		clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
	}

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

}

3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489
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;

3490 3491
	INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);

3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583
	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);
3584
		tasklet_kill(&cp->cnic_irq_task);
3585 3586 3587 3588
		free_irq(ethdev->irq_arr[0].vector, dev);
	}
}

3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601
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;
}

3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618
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);

3619
		cp->last_status_idx = cp->status_blk.bnx2->status_idx;
3620
		tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
3621
			     (unsigned long) dev);
3622 3623
		err = cnic_request_irq(dev);
		if (err)
3624
			return err;
3625

3626
		while (cp->status_blk.bnx2->status_completion_producer_index &&
3627 3628 3629 3630 3631 3632 3633
		       i < 10) {
			CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
				1 << (11 + sblk_num));
			udelay(10);
			i++;
			barrier();
		}
3634
		if (cp->status_blk.bnx2->status_completion_producer_index) {
3635 3636 3637 3638 3639
			cnic_free_irq(dev);
			goto failed;
		}

	} else {
3640
		struct status_block *sblk = cp->status_blk.gen;
3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657
		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:
3658
	netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691
	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;
3692
	struct cnic_uio_dev *udev = cp->udev;
3693 3694 3695 3696
	u32 cid_addr, tx_cid, sb_id;
	u32 val, offset0, offset1, offset2, offset3;
	int i;
	struct tx_bd *txbd;
3697
	dma_addr_t buf_map, ring_map = udev->l2_ring_map;
3698
	struct status_block *s_blk = cp->status_blk.gen;
3699 3700 3701 3702 3703

	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) {
3704
		struct status_block_msix *sblk = cp->status_blk.bnx2;
3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724

		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 {
3725 3726 3727
		cnic_init_context(dev, tx_cid);
		cnic_init_context(dev, tx_cid + 1);

3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738
		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);

3739
	txbd = (struct tx_bd *) udev->l2_ring;
3740

3741
	buf_map = udev->l2_buf_map;
3742 3743 3744 3745
	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;
	}
3746
	val = (u64) ring_map >> 32;
3747 3748 3749
	cnic_ctx_wr(dev, cid_addr, offset2, val);
	txbd->tx_bd_haddr_hi = val;

3750
	val = (u64) ring_map & 0xffffffff;
3751 3752 3753 3754 3755 3756 3757 3758
	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;
3759
	struct cnic_uio_dev *udev = cp->udev;
3760 3761 3762
	u32 cid_addr, sb_id, val, coal_reg, coal_val;
	int i;
	struct rx_bd *rxbd;
3763
	struct status_block *s_blk = cp->status_blk.gen;
3764
	dma_addr_t ring_map = udev->l2_ring_map;
3765 3766 3767 3768 3769 3770 3771

	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) {
3772
		struct status_block_msix *sblk = cp->status_blk.bnx2;
3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792

		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)
3793
		val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
3794
	else
3795
		val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
3796 3797
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);

3798
	rxbd = (struct rx_bd *) (udev->l2_ring + BCM_PAGE_SIZE);
3799 3800 3801 3802
	for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
		dma_addr_t buf_map;
		int n = (i % cp->l2_rx_ring_size) + 1;

3803
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
3804 3805 3806 3807 3808
		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;
	}
3809
	val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
3810 3811 3812
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
	rxbd->rx_bd_haddr_hi = val;

3813
	val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
3814 3815 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 3869 3870
	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;
	l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) |
			      (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;
3871
	struct status_block *sblk = cp->status_blk.gen;
3872
	u32 val, kcq_cid_addr, kwq_cid_addr;
3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896
	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);

3897
	kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
3898 3899 3900 3901 3902
	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;
3903
	set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
3904 3905 3906 3907 3908 3909 3910 3911 3912

	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;
3913
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
3914 3915

	val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
3916
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3917 3918

	val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
3919
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3920 3921

	val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
3922
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3923 3924

	val = (u32) cp->kwq_info.pgtbl_map;
3925 3926 3927 3928
	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;
3929

3930 3931 3932
	cp->kcq1.sw_prod_idx = 0;
	cp->kcq1.hw_prod_idx_ptr =
		(u16 *) &sblk->status_completion_producer_index;
3933

3934
	cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
3935 3936 3937 3938

	/* Initialize the kernel complete queue context. */
	val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
	      (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
3939
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
3940 3941

	val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
3942
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
3943 3944

	val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
3945
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
3946

3947 3948
	val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
3949

3950 3951
	val = (u32) cp->kcq1.dma.pgtbl_map;
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
3952 3953 3954

	cp->int_num = 0;
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
3955
		struct status_block_msix *msblk = cp->status_blk.bnx2;
3956
		u32 sb_id = cp->status_blk_num;
3957
		u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
3958

3959 3960 3961
		cp->kcq1.hw_prod_idx_ptr =
			(u16 *) &msblk->status_completion_producer_index;
		cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
3962
		cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
3963
		cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
3964 3965
		cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
		cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991
	}

	/* 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) {
3992
		netdev_err(dev->netdev, "cnic_init_irq failed\n");
3993 3994 3995 3996 3997 3998 3999 4000
		cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
		cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
		return err;
	}

	return 0;
}

4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027
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;

4028
	tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4029
		     (unsigned long) dev);
4030 4031 4032
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
		err = cnic_request_irq(dev);

4033 4034 4035
	return err;
}

4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053
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);
}

4054 4055 4056 4057 4058 4059
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 +
4060 4061 4062 4063 4064
			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 +
			offsetof(struct hc_index_data, timeout), 64 / 12);
	cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4065 4066 4067 4068 4069 4070
}

static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
{
}

4071 4072
static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4073 4074
{
	struct cnic_local *cp = dev->cnic_priv;
4075 4076 4077
	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;
4078
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4079 4080 4081 4082 4083 4084 4085
	int port = CNIC_PORT(cp);
	int i;
	int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
	u32 val;

	memset(txbd, 0, BCM_PAGE_SIZE);

4086
	buf_map = udev->l2_buf_map;
4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103
	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);

	}

4104
	val = (u64) ring_map >> 32;
4105 4106
	txbd->next_bd.addr_hi = cpu_to_le32(val);

4107
	data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4108

4109
	val = (u64) ring_map & 0xffffffff;
4110 4111
	txbd->next_bd.addr_lo = cpu_to_le32(val);

4112
	data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4113

4114 4115 4116
	/* 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;
4117 4118

	/* reset xstorm per client statistics */
4119
	if (cli < MAX_STAT_COUNTER_ID) {
4120 4121 4122 4123 4124
		val = BAR_XSTRORM_INTMEM +
		      XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
		for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
			CNIC_WR(dev, val + i * 4, 0);
	}
4125 4126

	cp->tx_cons_ptr =
4127
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4128 4129
}

4130 4131
static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4132 4133
{
	struct cnic_local *cp = dev->cnic_priv;
4134 4135
	struct cnic_uio_dev *udev = cp->udev;
	struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4136 4137
				BCM_PAGE_SIZE);
	struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
4138
				(udev->l2_ring + (2 * BCM_PAGE_SIZE));
4139
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4140 4141 4142
	int i;
	int port = CNIC_PORT(cp);
	int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4143
	int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4144
	u32 val;
4145
	dma_addr_t ring_map = udev->l2_ring_map;
4146 4147 4148 4149 4150 4151 4152

	/* General data */
	data->general.client_id = cli;
	data->general.statistics_en_flg = 1;
	data->general.statistics_counter_id = cli;
	data->general.activate_flg = 1;
	data->general.sp_client_id = cli;
4153 4154 4155 4156 4157

	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;

4158
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4159 4160 4161 4162
		rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
		rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
	}

4163
	val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4164
	rxbd->addr_hi = cpu_to_le32(val);
4165
	data->rx.bd_page_base.hi = cpu_to_le32(val);
4166

4167
	val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4168
	rxbd->addr_lo = cpu_to_le32(val);
4169
	data->rx.bd_page_base.lo = cpu_to_le32(val);
4170 4171

	rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4172
	val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4173
	rxcqe->addr_hi = cpu_to_le32(val);
4174
	data->rx.cqe_page_base.hi = cpu_to_le32(val);
4175

4176
	val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4177
	rxcqe->addr_lo = cpu_to_le32(val);
4178
	data->rx.cqe_page_base.lo = cpu_to_le32(val);
4179

4180 4181 4182 4183
	/* 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;
4184

4185 4186
	data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
	data->rx.bd_buff_size =	cpu_to_le16(cp->l2_single_buf_size);
4187

4188 4189
	data->rx.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
	data->rx.outer_vlan_removal_enable_flg = 1;
4190

4191 4192
	/* reset tstorm and ustorm per client statistics */
	if (cli < MAX_STAT_COUNTER_ID) {
4193 4194 4195 4196
		val = BAR_TSTRORM_INTMEM +
		      TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
		for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
			CNIC_WR(dev, val + i * 4, 0);
4197

4198 4199 4200 4201 4202
		val = BAR_USTRORM_INTMEM +
		      USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
		for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
			CNIC_WR(dev, val + i * 4, 0);
	}
4203 4204

	cp->rx_cons_ptr =
4205
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4206 4207 4208 4209 4210 4211 4212 4213 4214 4215
}

static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 base, addr, val;
	int port = CNIC_PORT(cp);

	dev->max_iscsi_conn = 0;
	base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
4216
	if (base == 0)
4217 4218
		return;

4219
	addr = BNX2X_SHMEM_ADDR(base,
4220 4221
		dev_info.port_hw_config[port].iscsi_mac_upper);

4222 4223
	val = CNIC_RD(dev, addr);

4224 4225 4226
	dev->mac_addr[0] = (u8) (val >> 8);
	dev->mac_addr[1] = (u8) val;

4227
	addr = BNX2X_SHMEM_ADDR(base,
4228 4229
		dev_info.port_hw_config[port].iscsi_mac_lower);

4230 4231
	val = CNIC_RD(dev, addr);

4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252
	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;

	addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
	val = CNIC_RD(dev, addr);

	if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
		u16 val16;

		addr = BNX2X_SHMEM_ADDR(base,
				drv_lic_key[port].max_iscsi_init_conn);
		val16 = CNIC_RD16(dev, addr);

		if (val16)
			val16 ^= 0x1e1e;
		dev->max_iscsi_conn = val16;
	}
	if (BNX2X_CHIP_IS_E1H(cp->chip_id)) {
		int func = CNIC_FUNC(cp);
4253 4254 4255 4256 4257 4258
		u32 mf_cfg_addr;

		mf_cfg_addr = base + BNX2X_SHMEM_MF_BLK_OFFSET;

		addr = mf_cfg_addr +
			offsetof(struct mf_cfg, func_mf_config[func].e1hov_tag);
4259 4260 4261 4262

		val = CNIC_RD(dev, addr);
		val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
		if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
4263 4264 4265
			addr = mf_cfg_addr +
				offsetof(struct mf_cfg,
					 func_mf_config[func].config);
4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276
			val = CNIC_RD(dev, addr);
			val &= FUNC_MF_CFG_PROTOCOL_MASK;
			if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
				dev->max_iscsi_conn = 0;
		}
	}
}

static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
4277
	struct cnic_eth_dev *ethdev = cp->ethdev;
4278
	int func = CNIC_FUNC(cp), ret, i;
4279
	u32 pfid;
4280
	struct host_hc_status_block_e1x *sb = cp->status_blk.gen;
4281

4282 4283 4284
	cp->pfid = func;
	pfid = cp->pfid;

4285
	ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4286
			       cp->iscsi_start_cid);
4287 4288 4289 4290

	if (ret)
		return -ENOMEM;

4291 4292
	cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;

4293
	cp->kcq1.io_addr = BAR_CSTRORM_INTMEM +
4294
			  CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0);
4295 4296 4297
	cp->kcq1.sw_prod_idx = 0;

	cp->kcq1.hw_prod_idx_ptr =
4298
		&sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS];
4299
	cp->kcq1.status_idx_ptr =
4300
		&sb->sb.running_index[SM_RX_ID];
4301 4302 4303 4304

	cnic_get_bnx2x_iscsi_info(dev);

	/* Only 1 EQ */
4305
	CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
4306
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4307
		CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
4308
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4309
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
4310
		cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
4311
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4312
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
4313
		(u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
4314
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4315
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
4316
		cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
4317
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4318
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
4319
		(u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
4320
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4321
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
4322
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4323
		CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
4324
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4325
		CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
4326
		HC_INDEX_ISCSI_EQ_CONS);
4327 4328 4329

	for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
		CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4330
			TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i),
4331 4332
			cp->conn_buf_info.pgtbl[2 * i]);
		CNIC_WR(dev, BAR_TSTRORM_INTMEM +
4333
			TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i) + 4,
4334 4335 4336 4337
			cp->conn_buf_info.pgtbl[(2 * i) + 1]);
	}

	CNIC_WR(dev, BAR_USTRORM_INTMEM +
4338
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
4339 4340
		cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
4341
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
4342 4343
		(u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);

4344 4345 4346
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
		TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);

4347 4348 4349 4350 4351 4352 4353 4354 4355
	cnic_setup_bnx2x_context(dev);

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

	return 0;
}

M
Michael Chan 已提交
4356 4357
static void cnic_init_rings(struct cnic_dev *dev)
{
4358
	struct cnic_local *cp = dev->cnic_priv;
4359
	struct cnic_uio_dev *udev = cp->udev;
4360 4361 4362 4363

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

M
Michael Chan 已提交
4364 4365 4366
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
		cnic_init_bnx2_tx_ring(dev);
		cnic_init_bnx2_rx_ring(dev);
4367
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
4368 4369
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
		u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4370 4371
		u32 cl_qzone_id, type;
		struct client_init_ramrod_data *data;
4372 4373
		union l5cm_specific_data l5_data;
		struct ustorm_eth_rx_producers rx_prods = {0};
4374
		u32 off, i;
4375 4376 4377 4378 4379

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

4380 4381
		cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);

4382
		off = BAR_USTRORM_INTMEM +
4383
			 USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli);
4384 4385

		for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
4386
			CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
4387

4388 4389
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

4390
		data = udev->l2_buf;
4391 4392 4393 4394 4395 4396

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

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

4397 4398
		l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
		l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
4399 4400 4401 4402 4403

		type = (ETH_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
			& SPE_HDR_CONN_TYPE;
		type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
			SPE_HDR_FUNCTION_ID);
4404

4405 4406
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);

4407
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
4408 4409
			BNX2X_ISCSI_L2_CID, type, &l5_data);

4410 4411 4412 4413 4414 4415 4416 4417
		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");
4418
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4419
		cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
M
Michael Chan 已提交
4420 4421 4422 4423 4424
	}
}

static void cnic_shutdown_rings(struct cnic_dev *dev)
{
4425 4426 4427 4428 4429
	struct cnic_local *cp = dev->cnic_priv;

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

M
Michael Chan 已提交
4430 4431
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
		cnic_shutdown_bnx2_rx_ring(dev);
4432 4433 4434
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
		struct cnic_local *cp = dev->cnic_priv;
		u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
4435
		union l5cm_specific_data l5_data;
4436
		int i;
4437
		u32 type;
4438 4439

		cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 0);
4440

4441 4442
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

4443 4444 4445 4446
		l5_data.phy_address.lo = cli;
		l5_data.phy_address.hi = 0;
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
			BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE, &l5_data);
4447 4448 4449 4450 4451 4452 4453 4454
		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");
4455
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
4456 4457

		memset(&l5_data, 0, sizeof(l5_data));
4458 4459 4460 4461 4462 4463
		type = (NONE_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT)
			& SPE_HDR_CONN_TYPE;
		type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
			 SPE_HDR_FUNCTION_ID);
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
			BNX2X_ISCSI_L2_CID, type, &l5_data);
4464
		msleep(10);
M
Michael Chan 已提交
4465
	}
4466
	clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
M
Michael Chan 已提交
4467 4468
}

4469
static int cnic_register_netdev(struct cnic_dev *dev)
4470 4471 4472 4473 4474
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err;

4475 4476 4477 4478 4479
	if (!ethdev)
		return -ENODEV;

	if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
		return 0;
4480 4481

	err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
4482
	if (err)
4483
		netdev_err(dev->netdev, "register_cnic failed\n");
4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506

	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;
4507 4508 4509 4510 4511

	dev->regview = ethdev->io_base;
	cp->chip_id = ethdev->chip_id;
	pci_dev_get(dev->pcidev);
	cp->func = PCI_FUNC(dev->pcidev->devfn);
4512
	cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
4513 4514 4515 4516
	cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;

	err = cp->alloc_resc(dev);
	if (err) {
4517
		netdev_err(dev->netdev, "allocate resource failure\n");
4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556
		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);
}

4557 4558 4559 4560 4561 4562

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

	cnic_free_irq(dev);
4563
	*cp->kcq1.hw_prod_idx_ptr = 0;
4564
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4565
		CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
4566
	CNIC_WR16(dev, cp->kcq1.io_addr, 0);
4567 4568 4569
	cnic_free_resc(dev);
}

4570 4571 4572 4573
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;
4574
		int i = 0;
4575

4576 4577 4578
		/* Need to wait for the ring shutdown event to complete
		 * before clearing the CNIC_UP flag.
		 */
4579
		while (cp->udev->uio_dev != -1 && i < 15) {
4580 4581 4582
			msleep(100);
			i++;
		}
4583
		cnic_shutdown_rings(dev);
4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601
		clear_bit(CNIC_F_CNIC_UP, &dev->flags);
		rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
		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)
4602
		netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
4603

4604
	netdev_info(dev->netdev, "Removed CNIC device\n");
4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619
	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) {
4620
		netdev_err(dev, "allocate dev struct failure\n");
4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636
		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);

4637
	netdev_info(dev, "Added CNIC device\n");
4638 4639 4640 4641 4642 4643 4644 4645 4646 4647

	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;
4648
	struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
4649

4650
	probe = symbol_get(bnx2_cnic_probe);
4651 4652
	if (probe) {
		ethdev = (*probe)(dev);
4653
		symbol_put(bnx2_cnic_probe);
4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706
	}
	if (!ethdev)
		return NULL;

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

	dev_hold(dev);
	pci_dev_get(pdev);
	if (pdev->device == PCI_DEVICE_ID_NX2_5709 ||
	    pdev->device == PCI_DEVICE_ID_NX2_5709S) {
		u8 rev;

		pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
		if (rev < 0x10) {
			pci_dev_put(pdev);
			goto cnic_err;
		}
	}
	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;

	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;
	cp->next_idx = cnic_bnx2_next_idx;
	cp->hw_idx = cnic_bnx2_hw_idx;
	return cdev;

cnic_err:
	dev_put(dev);
	return NULL;
}

4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757
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;

	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;
	cp->ack_int = cnic_ack_bnx2x_msix;
	cp->close_conn = cnic_close_bnx2x_conn;
	cp->next_idx = cnic_bnx2x_next_idx;
	cp->hw_idx = cnic_bnx2x_hw_idx;
	return cdev;
}

4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768
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);
4769 4770
		if (!strcmp(drvinfo.driver, "bnx2x"))
			cdev = init_bnx2x_cnic(dev);
4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807
		if (cdev) {
			write_lock(&cnic_dev_lock);
			list_add(&cdev->list, &cnic_dev_list);
			write_unlock(&cnic_dev_lock);
		}
	}
	return cdev;
}

/**
 * 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 if_type;
	int new_dev = 0;

	dev = cnic_from_netdev(netdev);

	if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
		/* 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);
4808 4809

		if (event == NETDEV_UP) {
4810 4811 4812 4813
			if (cnic_register_netdev(dev) != 0) {
				cnic_put(dev);
				goto done;
			}
4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835
			if (!cnic_start_hw(dev))
				cnic_ulp_start(dev);
		}

		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);
		}
		rcu_read_unlock();

		if (event == NETDEV_GOING_DOWN) {
			cnic_ulp_stop(dev);
			cnic_stop_hw(dev);
4836
			cnic_unregister_netdev(dev);
4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858
		} 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);
	}
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;
4859
	struct cnic_uio_dev *udev;
4860 4861 4862 4863 4864 4865 4866 4867 4868

	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);
4869
		cnic_unregister_netdev(dev);
4870 4871 4872
		list_del_init(&dev->list);
		cnic_free_dev(dev);
	}
4873 4874 4875 4876 4877
	while (!list_empty(&cnic_udev_list)) {
		udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
				  list);
		cnic_free_uio(udev);
	}
4878 4879 4880 4881 4882 4883
}

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

4884
	pr_info("%s", version);
4885 4886 4887 4888 4889 4890 4891

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

4892 4893 4894 4895 4896 4897 4898
	cnic_wq = create_singlethread_workqueue("cnic_wq");
	if (!cnic_wq) {
		cnic_release();
		unregister_netdevice_notifier(&cnic_netdev_notifier);
		return -ENOMEM;
	}

4899 4900 4901 4902 4903 4904 4905
	return 0;
}

static void __exit cnic_exit(void)
{
	unregister_netdevice_notifier(&cnic_netdev_notifier);
	cnic_release();
4906
	destroy_workqueue(cnic_wq);
4907 4908 4909 4910
}

module_init(cnic_init);
module_exit(cnic_exit);