cnic.c 143.2 KB
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/* cnic.c: Broadcom CNIC core network driver.
 *
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 * Copyright (c) 2006-2011 Broadcom Corporation
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 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation.
 *
 * Original skeleton written by: John(Zongxi) Chen (zongxi@broadcom.com)
 * Modified and maintained by: Michael Chan <mchan@broadcom.com>
 */

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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

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#include <linux/module.h>

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

#include "cnic_if.h"
#include "bnx2.h"
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#include "bnx2x/bnx2x_reg.h"
#include "bnx2x/bnx2x_fw_defs.h"
#include "bnx2x/bnx2x_hsi.h"
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#include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
#include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
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#include "cnic.h"
#include "cnic_defs.h"

#define DRV_MODULE_NAME		"cnic"

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

MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
	      "Chen (zongxi@broadcom.com");
MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(CNIC_MODULE_VERSION);

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

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static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];

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

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

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

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static struct workqueue_struct *cnic_wq;

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

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

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

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	rtnl_lock();
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	dev = udev->dev;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	struct drv_ctl_info info;

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

	info.data.ulp_type = ulp_type;
	ethdev->drv_ctl(dev->netdev, &info);
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

	return rc;
}

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

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

	return 1;
}

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

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

		return 1;
	}
	return 0;
}

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

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

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

	return 0;
}

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

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

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

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

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

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

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

	return 0;
}

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

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

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

	if (atomic_read(&ulp_ops->ref_count) != 0)
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		netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
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	return 0;

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

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

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

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

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

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

	mutex_unlock(&cnic_lock);

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	cnic_ulp_ctl(dev, ulp_type, true);

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	return 0;

}
EXPORT_SYMBOL(cnic_register_driver);

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

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

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	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]))
620
		netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
621

622 623
	cnic_ulp_ctl(dev, ulp_type, false);

624 625 626 627
	return 0;
}
EXPORT_SYMBOL(cnic_unregister_driver);

628 629
static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
			    u32 next)
630 631 632
{
	id_tbl->start = start_id;
	id_tbl->max = size;
633
	id_tbl->next = next;
634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712
	spin_lock_init(&id_tbl->lock);
	id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
	if (!id_tbl->table)
		return -ENOMEM;

	return 0;
}

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

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

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

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

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

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

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

	spin_unlock(&id_tbl->lock);

	return id;
}

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

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

	clear_bit(id, id_tbl->table);
}

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

	if (!dma->pg_arr)
		return;

	for (i = 0; i < dma->num_pages; i++) {
		if (dma->pg_arr[i]) {
M
Michael Chan 已提交
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			dma_free_coherent(&dev->pcidev->dev, BCM_PAGE_SIZE,
					  dma->pg_arr[i], dma->pg_map_arr[i]);
715 716 717 718
			dma->pg_arr[i] = NULL;
		}
	}
	if (dma->pgtbl) {
M
Michael Chan 已提交
719 720
		dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
				  dma->pgtbl, dma->pgtbl_map);
721 722 723 724 725 726 727 728 729 730
		dma->pgtbl = NULL;
	}
	kfree(dma->pg_arr);
	dma->pg_arr = NULL;
	dma->num_pages = 0;
}

static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma)
{
	int i;
M
Michael Chan 已提交
731
	__le32 *page_table = (__le32 *) dma->pgtbl;
732 733 734

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in big endian format. */
M
Michael Chan 已提交
735
		*page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
736
		page_table++;
M
Michael Chan 已提交
737
		*page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
738 739 740 741
		page_table++;
	}
}

742 743 744
static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
{
	int i;
M
Michael Chan 已提交
745
	__le32 *page_table = (__le32 *) dma->pgtbl;
746 747 748

	for (i = 0; i < dma->num_pages; i++) {
		/* Each entry needs to be in little endian format. */
M
Michael Chan 已提交
749
		*page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
750
		page_table++;
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Michael Chan 已提交
751
		*page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
752 753 754 755
		page_table++;
	}
}

756 757 758 759 760 761 762 763 764 765 766 767 768 769 770
static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma,
			  int pages, int use_pg_tbl)
{
	int i, size;
	struct cnic_local *cp = dev->cnic_priv;

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

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

	for (i = 0; i < pages; i++) {
M
Michael Chan 已提交
771 772 773 774
		dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
						    BCM_PAGE_SIZE,
						    &dma->pg_map_arr[i],
						    GFP_ATOMIC);
775 776 777 778 779 780 781 782
		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);
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Michael Chan 已提交
783 784
	dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
					&dma->pgtbl_map, GFP_ATOMIC);
785 786 787 788 789 790 791 792 793 794 795 796
	if (dma->pgtbl == NULL)
		goto error;

	cp->setup_pgtbl(dev, dma);

	return 0;

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

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Michael Chan 已提交
797 798 799 800 801 802 803
static void cnic_free_context(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	int i;

	for (i = 0; i < cp->ctx_blks; i++) {
		if (cp->ctx_arr[i].ctx) {
M
Michael Chan 已提交
804 805 806
			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
807 808 809 810 811
			cp->ctx_arr[i].ctx = NULL;
		}
	}
}

M
Michael Chan 已提交
812
static void __cnic_free_uio(struct cnic_uio_dev *udev)
813
{
M
Michael Chan 已提交
814
	uio_unregister_device(&udev->cnic_uinfo);
M
Michael Chan 已提交
815

M
Michael Chan 已提交
816 817 818 819
	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;
820 821
	}

M
Michael Chan 已提交
822 823 824 825
	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;
826
	}
827 828 829

	pci_dev_put(udev->pdev);
	kfree(udev);
M
Michael Chan 已提交
830 831
}

M
Michael Chan 已提交
832
static void cnic_free_uio(struct cnic_uio_dev *udev)
M
Michael Chan 已提交
833
{
M
Michael Chan 已提交
834
	if (!udev)
M
Michael Chan 已提交
835 836
		return;

837 838 839
	write_lock(&cnic_dev_lock);
	list_del_init(&udev->list);
	write_unlock(&cnic_dev_lock);
M
Michael Chan 已提交
840
	__cnic_free_uio(udev);
M
Michael Chan 已提交
841 842 843 844 845
}

static void cnic_free_resc(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
846
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
847

M
Michael Chan 已提交
848
	if (udev) {
849
		udev->dev = NULL;
M
Michael Chan 已提交
850
		cp->udev = NULL;
M
Michael Chan 已提交
851
	}
852

M
Michael Chan 已提交
853
	cnic_free_context(dev);
854 855 856 857 858 859
	kfree(cp->ctx_arr);
	cp->ctx_arr = NULL;
	cp->ctx_blks = 0;

	cnic_free_dma(dev, &cp->gbl_buf_info);
	cnic_free_dma(dev, &cp->kwq_info);
860
	cnic_free_dma(dev, &cp->kwq_16_data_info);
M
Michael Chan 已提交
861
	cnic_free_dma(dev, &cp->kcq2.dma);
862
	cnic_free_dma(dev, &cp->kcq1.dma);
863 864 865 866 867
	kfree(cp->iscsi_tbl);
	cp->iscsi_tbl = NULL;
	kfree(cp->ctx_tbl);
	cp->ctx_tbl = NULL;

M
Michael Chan 已提交
868
	cnic_free_id_tbl(&cp->fcoe_cid_tbl);
869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910
	cnic_free_id_tbl(&cp->cid_tbl);
}

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

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

		cp->ctx_blk_size = BCM_PAGE_SIZE;
		cp->cids_per_blk = BCM_PAGE_SIZE / 128;
		arr_size = BNX2_MAX_CID / cp->cids_per_blk *
			   sizeof(struct cnic_ctx);
		cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
		if (cp->ctx_arr == NULL)
			return -ENOMEM;

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

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

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

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

		for (i = 0; i < cp->ctx_blks; i++) {
			cp->ctx_arr[i].ctx =
M
Michael Chan 已提交
911 912 913 914
				dma_alloc_coherent(&dev->pcidev->dev,
						   BCM_PAGE_SIZE,
						   &cp->ctx_arr[i].mapping,
						   GFP_KERNEL);
915 916 917 918 919 920 921
			if (cp->ctx_arr[i].ctx == NULL)
				return -ENOMEM;
		}
	}
	return 0;
}

922 923 924 925 926 927 928 929 930 931 932
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)
933
{
934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951
	idx++;
	if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
		idx++;

	return idx;
}

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

static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
			  bool use_pg_tbl)
{
	int err, i, use_page_tbl = 0;
952 953
	struct kcqe **kcq;

954 955
	if (use_pg_tbl)
		use_page_tbl = 1;
956

957
	err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
958 959 960 961 962 963
	if (err)
		return err;

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

964 965 966
	info->next_idx = cnic_bnx2_next_idx;
	info->hw_idx = cnic_bnx2_hw_idx;
	if (use_pg_tbl)
967 968
		return 0;

969 970 971
	info->next_idx = cnic_bnx2x_next_idx;
	info->hw_idx = cnic_bnx2x_hw_idx;

972 973 974 975 976 977 978 979 980 981 982 983 984
	for (i = 0; i < KCQ_PAGE_CNT; i++) {
		struct bnx2x_bd_chain_next *next =
			(struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
		int j = i + 1;

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

M
Michael Chan 已提交
985
static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
986 987
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
988 989
	struct cnic_uio_dev *udev;

990 991 992 993 994 995 996 997 998 999 1000
	read_lock(&cnic_dev_lock);
	list_for_each_entry(udev, &cnic_udev_list, list) {
		if (udev->pdev == dev->pcidev) {
			udev->dev = dev;
			cp->udev = udev;
			read_unlock(&cnic_dev_lock);
			return 0;
		}
	}
	read_unlock(&cnic_dev_lock);

M
Michael Chan 已提交
1001 1002 1003 1004 1005
	udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
	if (!udev)
		return -ENOMEM;

	udev->uio_dev = -1;
1006

M
Michael Chan 已提交
1007 1008 1009 1010 1011 1012 1013
	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)
1014
		goto err_udev;
1015

M
Michael Chan 已提交
1016 1017 1018 1019 1020 1021
	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)
1022
		goto err_dma;
1023

1024 1025 1026 1027 1028 1029
	write_lock(&cnic_dev_lock);
	list_add(&udev->list, &cnic_udev_list);
	write_unlock(&cnic_dev_lock);

	pci_dev_get(udev->pdev);

M
Michael Chan 已提交
1030 1031
	cp->udev = udev;

1032
	return 0;
1033 1034 1035 1036 1037 1038
 err_dma:
	dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size,
			  udev->l2_ring, udev->l2_ring_map);
 err_udev:
	kfree(udev);
	return -ENOMEM;
1039 1040
}

M
Michael Chan 已提交
1041 1042
static int cnic_init_uio(struct cnic_dev *dev)
{
1043
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
1044
	struct cnic_uio_dev *udev = cp->udev;
1045
	struct uio_info *uinfo;
M
Michael Chan 已提交
1046
	int ret = 0;
1047

M
Michael Chan 已提交
1048
	if (!udev)
1049
		return -ENOMEM;
1050

M
Michael Chan 已提交
1051 1052
	uinfo = &udev->cnic_uinfo;

1053 1054 1055 1056 1057
	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;

1058
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
1059
		uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
M
Michael Chan 已提交
1060
					PAGE_MASK;
1061 1062 1063 1064 1065 1066
		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";
1067 1068 1069
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
		uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
			PAGE_MASK;
1070
		uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
1071 1072

		uinfo->name = "bnx2x_cnic";
1073 1074
	}

1075 1076
	uinfo->mem[1].memtype = UIO_MEM_LOGICAL;

M
Michael Chan 已提交
1077 1078
	uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
	uinfo->mem[2].size = udev->l2_ring_size;
1079 1080
	uinfo->mem[2].memtype = UIO_MEM_LOGICAL;

M
Michael Chan 已提交
1081 1082
	uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
	uinfo->mem[3].size = udev->l2_buf_size;
1083 1084 1085 1086 1087 1088 1089 1090
	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;

1091 1092 1093
	if (udev->uio_dev == -1) {
		if (!uinfo->priv) {
			uinfo->priv = udev;
1094

1095 1096 1097 1098 1099
			ret = uio_register_device(&udev->pdev->dev, uinfo);
		}
	} else {
		cnic_init_rings(dev);
	}
1100

M
Michael Chan 已提交
1101
	return ret;
1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113
}

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;

1114
	ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
1115 1116 1117 1118 1119 1120 1121
	if (ret)
		goto error;

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

M
Michael Chan 已提交
1122
	ret = cnic_alloc_uio_rings(dev, 2);
1123 1124 1125
	if (ret)
		goto error;

M
Michael Chan 已提交
1126
	ret = cnic_init_uio(dev);
1127 1128
	if (ret)
		goto error;
1129 1130 1131 1132 1133 1134 1135 1136

	return 0;

error:
	cnic_free_resc(dev);
	return ret;
}

1137 1138 1139 1140
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;
1141
	int total_mem, blks, i;
1142

1143
	total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
1144 1145 1146 1147 1148 1149 1150
	blks = total_mem / ctx_blk_size;
	if (total_mem % ctx_blk_size)
		blks++;

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

1151
	cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
1152 1153 1154 1155 1156
	if (cp->ctx_arr == NULL)
		return -ENOMEM;

	cp->ctx_blks = blks;
	cp->ctx_blk_size = ctx_blk_size;
M
Michael Chan 已提交
1157
	if (!BNX2X_CHIP_IS_57710(cp->chip_id))
1158 1159 1160 1161 1162 1163 1164 1165
		cp->ctx_align = 0;
	else
		cp->ctx_align = ctx_blk_size;

	cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;

	for (i = 0; i < blks; i++) {
		cp->ctx_arr[i].ctx =
M
Michael Chan 已提交
1166 1167 1168
			dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
					   &cp->ctx_arr[i].mapping,
					   GFP_KERNEL);
1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186
		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;
1187 1188
	struct cnic_eth_dev *ethdev = cp->ethdev;
	u32 start_cid = ethdev->starting_cid;
1189 1190 1191
	int i, j, n, ret, pages;
	struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;

1192 1193
	cp->iro_arr = ethdev->iro_arr;

1194
	cp->max_cid_space = MAX_ISCSI_TBL_SZ;
1195
	cp->iscsi_start_cid = start_cid;
M
Michael Chan 已提交
1196 1197
	cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;

1198
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
1199
		cp->max_cid_space += dev->max_fcoe_conn;
M
Michael Chan 已提交
1200 1201 1202 1203 1204
		cp->fcoe_init_cid = ethdev->fcoe_init_cid;
		if (!cp->fcoe_init_cid)
			cp->fcoe_init_cid = 0x10;
	}

1205 1206 1207 1208 1209 1210
	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) *
1211
				cp->max_cid_space, GFP_KERNEL);
1212 1213 1214 1215 1216 1217 1218 1219
	if (!cp->ctx_tbl)
		goto error;

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

M
Michael Chan 已提交
1220 1221 1222
	for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
		cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;

1223
	pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
1224 1225 1226 1227 1228 1229 1230
		PAGE_SIZE;

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

	n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
1231
	for (i = 0, j = 0; i < cp->max_cid_space; i++) {
1232 1233 1234 1235 1236 1237 1238 1239 1240 1241
		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++;
	}

1242
	ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
1243 1244 1245
	if (ret)
		goto error;

1246 1247
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
		ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
M
Michael Chan 已提交
1248 1249 1250 1251
		if (ret)
			goto error;
	}

1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264
	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;

M
Michael Chan 已提交
1265
	ret = cnic_alloc_uio_rings(dev, 4);
1266 1267 1268
	if (ret)
		goto error;

M
Michael Chan 已提交
1269
	ret = cnic_init_uio(dev);
1270 1271 1272 1273 1274 1275 1276 1277 1278 1279
	if (ret)
		goto error;

	return 0;

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

1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297
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) &&
1298
	    !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
1299 1300 1301 1302
		spin_unlock_bh(&cp->cnic_ulp_lock);
		return -EAGAIN;
	}

1303
	clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320

	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;
}

1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338
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];
1339
	u16 type_16;
1340 1341 1342 1343
	int ret;

	kwqe.hdr.conn_and_cmd_data =
		cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
1344
			     BNX2X_HW_CID(cp, cid)));
1345 1346 1347 1348 1349 1350

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

	kwqe.hdr.type = cpu_to_le16(type_16);
1351
	kwqe.hdr.reserved1 = 0;
1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363
	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;

1364
	return ret;
1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385
}

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;
1386 1387
	int hq_bds, pages;
	u32 pfid = cp->pfid;
1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403

	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 */
1404
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1405
		  req1->rq_num_wqes);
1406
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1407 1408
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
1409
		 TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1410
	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
1411
		  TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1412 1413 1414 1415
		  req1->num_tasks_per_conn);

	/* init Ustorm RAM */
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1416
		  USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
1417
		  req1->rq_buffer_size);
1418
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1419 1420
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_USTRORM_INTMEM +
1421
		 USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1422
	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1423
		  USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1424
		  req1->num_tasks_per_conn);
1425
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
1426
		  req1->rq_num_wqes);
1427
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1428
		  req1->cq_num_wqes);
1429
	CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1430 1431 1432
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Xstorm RAM */
1433
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1434 1435
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
1436
		 XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1437
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
1438
		  XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1439
		  req1->num_tasks_per_conn);
1440
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1441
		  hq_bds);
1442
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
1443
		  req1->num_tasks_per_conn);
1444
	CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
1445 1446 1447
		  cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);

	/* init Cstorm RAM */
1448
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
1449 1450
		  PAGE_SIZE);
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
1451
		 CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
1452
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1453
		  CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
1454
		  req1->num_tasks_per_conn);
1455
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
1456
		  req1->cq_num_wqes);
1457
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
1458 1459 1460 1461 1462 1463 1464 1465 1466
		  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;
1467
	u32 pfid = cp->pfid;
1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478
	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 +
1479
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1480
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
1481
		TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1482 1483 1484
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_USTRORM_INTMEM +
1485
		  USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1486
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1487
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
1488
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
1489
		USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
1490 1491 1492
		req2->error_bit_map[1]);

	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
1493
		  CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515

	kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;

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

	return 0;
}

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

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

		cnic_free_dma(dev, &iscsi->hq_info);
		cnic_free_dma(dev, &iscsi->r2tq_info);
		cnic_free_dma(dev, &iscsi->task_array_info);
M
Michael Chan 已提交
1516 1517 1518
		cnic_free_id(&cp->cid_tbl, ctx->cid);
	} else {
		cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
1519
	}
M
Michael Chan 已提交
1520

1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531
	ctx->cid = 0;
}

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

M
Michael Chan 已提交
1532 1533 1534 1535 1536 1537 1538 1539 1540 1541
	if (ctx->ulp_proto_id == CNIC_ULP_FCOE) {
		cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl);
		if (cid == -1) {
			ret = -ENOMEM;
			goto error;
		}
		ctx->cid = cid;
		return 0;
	}

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 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613
	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;
1614
	u32 hw_cid = BNX2X_HW_CID(cp, cid);
1615 1616 1617
	struct iscsi_context *ictx;
	struct regpair context_addr;
	int i, j, n = 2, n_max;
1618
	u8 port = CNIC_PORT(cp);
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

	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;
1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680
	ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
		ETH_P_8021Q;
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
		cp->port_mode == CHIP_2_PORT_MODE) {

		port = 0;
	}
	ictx->xstorm_st_context.common.flags =
		1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT;
	ictx->xstorm_st_context.common.flags =
		port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT;
1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691

	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;
1692 1693
	ictx->tstorm_st_context.tcp.ooo_support_mode =
		TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
1694

1695
	ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
1696 1697

	ictx->ustorm_st_context.ring.rq.pbl_base.lo =
1698
		req2->rq_page_table_addr_lo;
1699
	ictx->ustorm_st_context.ring.rq.pbl_base.hi =
1700
		req2->rq_page_table_addr_hi;
1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793
	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;
1794
	struct cnic_context *ctx;
1795 1796 1797
	struct iscsi_kcqe kcqe;
	struct kcqe *cqes[1];
	u32 l5_cid;
1798
	int ret = 0;
1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810

	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;
	}
1811
	*work = 2 + req2->num_additional_wqes;
1812 1813 1814 1815 1816 1817 1818 1819 1820 1821

	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;

1822 1823 1824 1825 1826 1827 1828
	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;
	}

1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846
	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;
1847
	kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid);
1848 1849 1850 1851

done:
	cqes[0] = (struct kcqe *) &kcqe;
	cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
1852
	return 0;
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
}


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;
}

1880
static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
1881 1882 1883
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
1884 1885
	union l5cm_specific_data l5_data;
	int ret;
1886
	u32 hw_cid;
1887 1888 1889 1890

	init_waitqueue_head(&ctx->waitq);
	ctx->wait_cond = 0;
	memset(&l5_data, 0, sizeof(l5_data));
1891 1892 1893
	hw_cid = BNX2X_HW_CID(cp, ctx->cid);

	ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
1894
				  hw_cid, NONE_CONNECTION_TYPE, &l5_data);
1895

1896
	if (ret == 0) {
1897
		wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
1898 1899 1900
		if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
			return -EBUSY;
	}
1901

1902
	return 0;
1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918
}

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;

1919 1920 1921 1922 1923 1924 1925 1926 1927 1928
	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;
	}
1929 1930 1931

	ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);

1932 1933 1934
skip_cfc_delete:
	cnic_free_bnx2x_conn_resc(dev, l5_cid);

1935 1936 1937 1938
	if (!ret) {
		atomic_dec(&cp->iscsi_conn);
		clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
	}
1939

1940
destroy_reply:
1941 1942 1943 1944 1945 1946 1947 1948 1949
	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);

1950
	return 0;
1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002
}

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

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

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

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

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

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

static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
2003
	u32 pfid = cp->pfid;
2004 2005 2006
	u8 *mac = dev->mac_addr;

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2007
		 XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
2008
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2009
		 XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
2010
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2011
		 XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
2012
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2013
		 XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
2014
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2015
		 XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
2016
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
2017
		 XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
2018 2019

	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2020
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
2021
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2022
		 TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2023 2024
		 mac[4]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2025
		 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
2026
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2027
		 TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2028 2029
		 mac[2]);
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2030
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
2031
	CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
2032
		 TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047
		 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 +
2048
		 XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
2049 2050

	CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
2051
		  TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
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
}

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) {
2085
		netdev_err(dev->netdev, "conn_buf size too big\n");
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
		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 +
2126
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id);
2127 2128 2129 2130 2131 2132 2133

	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)
2134
		set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
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	return ret;
}

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

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

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

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

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

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

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

M
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static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct fcoe_kwqe_stat *req;
	struct fcoe_stat_ramrod_params *fcoe_stat;
	union l5cm_specific_data l5_data;
	struct cnic_local *cp = dev->cnic_priv;
	int ret;
	u32 cid;

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

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

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

2211
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
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Michael Chan 已提交
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				  FCOE_CONNECTION_TYPE, &l5_data);
	return ret;
}

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

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

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

	memset(fcoe_init, 0, sizeof(*fcoe_init));
	memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1));
	memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2));
	memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3));
2256 2257 2258
	fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff;
	fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32;
	fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages;
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Michael Chan 已提交
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	fcoe_init->sb_num = cp->status_blk_num;
	fcoe_init->eq_prod = MAX_KCQ_IDX;
	fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS;
	cp->kcq2.sw_prod_idx = 0;

	cid = BNX2X_HW_CID(cp, cp->fcoe_init_cid);
2266
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
M
Michael Chan 已提交
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				  FCOE_CONNECTION_TYPE, &l5_data);
	*work = 3;
	return ret;
}

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

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

	*work = 4;

	l5_cid = req1->fcoe_conn_id;
2302
	if (l5_cid >= dev->max_fcoe_conn)
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Michael Chan 已提交
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		goto err_reply;

	l5_cid += BNX2X_FCOE_L5_CID_BASE;

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

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

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

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

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

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

	return ret;

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

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

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

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

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

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

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

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

	req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
	cid = req->context_id;
	l5_cid = req->conn_id;
2406
	if (l5_cid >= dev->max_fcoe_conn)
M
Michael Chan 已提交
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		return -EINVAL;

	l5_cid += BNX2X_FCOE_L5_CID_BASE;

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

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

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

	req = (struct fcoe_kwqe_conn_destroy *) kwqe;
	cid = req->context_id;
	l5_cid = req->conn_id;
2440
	if (l5_cid >= dev->max_fcoe_conn)
M
Michael Chan 已提交
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		return -EINVAL;

	l5_cid += BNX2X_FCOE_L5_CID_BASE;

	ctx = &cp->ctx_tbl[l5_cid];

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

2450 2451
	memset(&kcqe, 0, sizeof(kcqe));
	kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
M
Michael Chan 已提交
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	memset(&l5_data, 0, sizeof(l5_data));
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid,
				  FCOE_CONNECTION_TYPE, &l5_data);
	if (ret == 0) {
2456 2457 2458
		wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
		if (ctx->wait_cond)
			kcqe.completion_status = 0;
M
Michael Chan 已提交
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	}

2461 2462 2463
	set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
	queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));

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

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

2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496
static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 i;

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

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

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

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

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

2505 2506
	cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);

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

	memset(&l5_data, 0, sizeof(l5_data));
2511
	ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
M
Michael Chan 已提交
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				  FCOE_CONNECTION_TYPE, &l5_data);
	return ret;
}

2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566
static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct kcqe kcqe;
	struct kcqe *cqes[1];
	u32 cid;
	u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
	u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK;
	int ulp_type;

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

	if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) {
		ulp_type = CNIC_ULP_ISCSI;
		if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN)
			cid = kwqe->kwqe_info1;

		kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT;
		kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI;
		kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_NIC_ERROR;
		kcqe.kcqe_info2 = cid;
		cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);

	} else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
		struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
		u32 kcqe_op;

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

		kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
				    KCQE_FLAGS_LAYER_MASK_L4;
		l4kcqe->status = L4_KCQE_COMPLETION_STATUS_NIC_ERROR;
		l4kcqe->cid = cid;
		cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
	} else {
		return;
	}

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

M
Michael Chan 已提交
2567 2568
static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
					 struct kwqe *wqes[], u32 num_wqes)
2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619
{
	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;
2620 2621
			netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
				   opcode);
2622 2623
			break;
		}
2624
		if (ret < 0) {
2625 2626
			netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
				   opcode);
2627 2628 2629 2630 2631 2632 2633 2634

			/* Possibly bnx2x parity error, send completion
			 * to ulp drivers with error code to speed up
			 * cleanup and reset recovery.
			 */
			if (ret == -EIO || ret == -EAGAIN)
				cnic_bnx2x_kwqe_err(dev, kwqe);
		}
2635 2636 2637 2638 2639
		i += work;
	}
	return 0;
}

M
Michael Chan 已提交
2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650
static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev,
					struct kwqe *wqes[], u32 num_wqes)
{
	struct cnic_local *cp = dev->cnic_priv;
	int i, work, ret;
	u32 opcode;
	struct kwqe *kwqe;

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

2651
	if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
M
Michael Chan 已提交
2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731
		return -EINVAL;

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

		switch (opcode) {
		case FCOE_KWQE_OPCODE_INIT1:
			ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i],
						    num_wqes - i, &work);
			break;
		case FCOE_KWQE_OPCODE_OFFLOAD_CONN1:
			ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i],
						    num_wqes - i, &work);
			break;
		case FCOE_KWQE_OPCODE_ENABLE_CONN:
			ret = cnic_bnx2x_fcoe_enable(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_DISABLE_CONN:
			ret = cnic_bnx2x_fcoe_disable(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_DESTROY_CONN:
			ret = cnic_bnx2x_fcoe_destroy(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_DESTROY:
			ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe);
			break;
		case FCOE_KWQE_OPCODE_STAT:
			ret = cnic_bnx2x_fcoe_stat(dev, kwqe);
			break;
		default:
			ret = 0;
			netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
				   opcode);
			break;
		}
		if (ret < 0)
			netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
				   opcode);
		i += work;
	}
	return 0;
}

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

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

	if (!num_wqes)
		return 0;

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

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

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

	return opflag & KCQE_FLAGS_LAYER_MASK;
}

2732 2733 2734
static void service_kcqes(struct cnic_dev *dev, int num_cqes)
{
	struct cnic_local *cp = dev->cnic_priv;
2735
	int i, j, comp = 0;
2736 2737 2738 2739 2740 2741 2742

	i = 0;
	j = 1;
	while (num_cqes) {
		struct cnic_ulp_ops *ulp_ops;
		int ulp_type;
		u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
M
Michael Chan 已提交
2743
		u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
2744 2745

		if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
2746
			comp++;
2747 2748 2749 2750

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

M
Michael Chan 已提交
2751
			if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
2752 2753 2754
				break;

			if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
2755
				comp++;
2756 2757 2758 2759 2760 2761 2762
			j++;
		}

		if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
			ulp_type = CNIC_ULP_RDMA;
		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
			ulp_type = CNIC_ULP_ISCSI;
M
Michael Chan 已提交
2763 2764
		else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
			ulp_type = CNIC_ULP_FCOE;
2765 2766 2767 2768 2769
		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 {
2770 2771
			netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
				   kcqe_op_flag);
2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786
			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;
	}
2787 2788
	if (unlikely(comp))
		cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
2789 2790
}

M
Michael Chan 已提交
2791
static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
2792 2793
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
2794
	u16 i, ri, hw_prod, last;
2795 2796 2797
	struct kcqe *kcqe;
	int kcqe_cnt = 0, last_cnt = 0;

M
Michael Chan 已提交
2798
	i = ri = last = info->sw_prod_idx;
2799
	ri &= MAX_KCQ_IDX;
M
Michael Chan 已提交
2800
	hw_prod = *info->hw_prod_idx_ptr;
2801
	hw_prod = info->hw_idx(hw_prod);
2802 2803

	while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
M
Michael Chan 已提交
2804
		kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
2805
		cp->completed_kcq[kcqe_cnt++] = kcqe;
2806
		i = info->next_idx(i);
2807 2808 2809 2810 2811 2812 2813
		ri = i & MAX_KCQ_IDX;
		if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
			last_cnt = kcqe_cnt;
			last = i;
		}
	}

M
Michael Chan 已提交
2814
	info->sw_prod_idx = last;
2815 2816 2817
	return last_cnt;
}

2818 2819 2820
static int cnic_l2_completion(struct cnic_local *cp)
{
	u16 hw_cons, sw_cons;
M
Michael Chan 已提交
2821
	struct cnic_uio_dev *udev = cp->udev;
2822
	union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
M
Michael Chan 已提交
2823
					(udev->l2_ring + (2 * BCM_PAGE_SIZE));
2824 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
	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
2852
static void cnic_chk_pkt_rings(struct cnic_local *cp)
2853
{
M
Michael Chan 已提交
2854
	u16 rx_cons, tx_cons;
2855
	int comp = 0;
2856

M
Michael Chan 已提交
2857
	if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
2858 2859
		return;

M
Michael Chan 已提交
2860 2861
	rx_cons = *cp->rx_cons_ptr;
	tx_cons = *cp->tx_cons_ptr;
2862
	if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
2863 2864 2865
		if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
			comp = cnic_l2_completion(cp);

2866 2867
		cp->tx_cons = tx_cons;
		cp->rx_cons = rx_cons;
2868

M
Michael Chan 已提交
2869 2870
		if (cp->udev)
			uio_event_notify(&cp->udev->cnic_uinfo);
2871
	}
2872 2873
	if (comp)
		clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
2874 2875
}

2876
static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
2877 2878
{
	struct cnic_local *cp = dev->cnic_priv;
2879
	u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
2880 2881
	int kcqe_cnt;

2882 2883
	/* status block index must be read before reading other fields */
	rmb();
2884 2885
	cp->kwq_con_idx = *cp->kwq_con_idx_ptr;

M
Michael Chan 已提交
2886
	while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
2887 2888 2889 2890 2891

		service_kcqes(dev, kcqe_cnt);

		/* Tell compiler that status_blk fields can change. */
		barrier();
M
Michael Chan 已提交
2892 2893 2894 2895
		status_idx = (u16) *cp->kcq1.status_idx_ptr;
		/* status block index must be read first */
		rmb();
		cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
2896 2897
	}

M
Michael Chan 已提交
2898
	CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
2899

M
Michael Chan 已提交
2900
	cnic_chk_pkt_rings(cp);
2901

2902 2903 2904
	return status_idx;
}

2905
static int cnic_service_bnx2(void *data, void *status_blk)
2906
{
2907
	struct cnic_dev *dev = data;
2908

2909 2910 2911 2912 2913
	if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
		struct status_block *sblk = status_blk;

		return sblk->status_idx;
	}
2914

2915 2916
	return cnic_service_bnx2_queues(dev);
}
2917

2918 2919 2920 2921
static void cnic_service_bnx2_msix(unsigned long data)
{
	struct cnic_dev *dev = (struct cnic_dev *) data;
	struct cnic_local *cp = dev->cnic_priv;
2922

2923
	cp->last_status_idx = cnic_service_bnx2_queues(dev);
2924 2925 2926 2927 2928

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

2929 2930 2931 2932 2933
static void cnic_doirq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

	if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
2934 2935
		u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;

2936
		prefetch(cp->status_blk.gen);
2937
		prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
2938 2939 2940 2941 2942

		tasklet_schedule(&cp->cnic_irq_task);
	}
}

2943 2944 2945 2946 2947 2948 2949 2950
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);

2951
	cnic_doirq(dev);
2952 2953 2954 2955

	return IRQ_HANDLED;
}

2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973
static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
				      u16 index, u8 op, u8 update)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
		       COMMAND_REG_INT_ACK);
	struct igu_ack_register igu_ack;

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

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

M
Michael Chan 已提交
2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989
static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment,
			    u16 index, u8 op, u8 update)
{
	struct igu_regular cmd_data;
	u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8;

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


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

2990 2991 2992 2993
static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

2994
	cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
2995 2996 2997
			   IGU_INT_DISABLE, 0);
}

M
Michael Chan 已提交
2998 2999 3000 3001 3002 3003 3004 3005
static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;

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

3006
static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
3007
{
3008
	u32 last_status = *info->status_idx_ptr;
3009 3010
	int kcqe_cnt;

3011 3012
	/* status block index must be read before reading the KCQ */
	rmb();
3013
	while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
3014 3015 3016 3017 3018 3019

		service_kcqes(dev, kcqe_cnt);

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

3020
		last_status = *info->status_idx_ptr;
3021 3022
		/* status block index must be read before reading the KCQ */
		rmb();
3023
	}
3024 3025 3026 3027 3028 3029 3030
	return last_status;
}

static void cnic_service_bnx2x_bh(unsigned long data)
{
	struct cnic_dev *dev = (struct cnic_dev *) data;
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
3031
	u32 status_idx, new_status_idx;
3032 3033 3034 3035

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

M
Michael Chan 已提交
3036 3037
	while (1) {
		status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
3038

M
Michael Chan 已提交
3039 3040
		CNIC_WR16(dev, cp->kcq1.io_addr,
			  cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
M
Michael Chan 已提交
3041

3042
		if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
3043 3044 3045 3046 3047 3048 3049 3050 3051
			cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID,
					   status_idx, IGU_INT_ENABLE, 1);
			break;
		}

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

		if (new_status_idx != status_idx)
			continue;
M
Michael Chan 已提交
3052 3053 3054 3055

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

M
Michael Chan 已提交
3056 3057
		cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
				status_idx, IGU_INT_ENABLE, 1);
M
Michael Chan 已提交
3058 3059

		break;
M
Michael Chan 已提交
3060
	}
3061 3062 3063 3064 3065 3066 3067
}

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

3068 3069
	if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
		cnic_doirq(dev);
3070

3071
	cnic_chk_pkt_rings(cp);
3072 3073 3074 3075

	return 0;
}

3076
static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
3077
{
3078
	struct cnic_ulp_ops *ulp_ops;
3079

3080 3081
	if (if_type == CNIC_ULP_ISCSI)
		cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
3082

3083 3084 3085 3086
	mutex_lock(&cnic_lock);
	ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
					    lockdep_is_held(&cnic_lock));
	if (!ulp_ops) {
3087
		mutex_unlock(&cnic_lock);
3088 3089 3090 3091
		return;
	}
	set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
	mutex_unlock(&cnic_lock);
3092

3093 3094
	if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
		ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
3095

3096 3097 3098 3099 3100 3101 3102 3103 3104 3105
	clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
}

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

	for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
		cnic_ulp_stop_one(cp, if_type);
3106 3107 3108 3109 3110 3111 3112 3113 3114 3115
}

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;

3116
		mutex_lock(&cnic_lock);
3117 3118
		ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
						    lockdep_is_held(&cnic_lock));
3119 3120
		if (!ulp_ops || !ulp_ops->cnic_start) {
			mutex_unlock(&cnic_lock);
3121
			continue;
3122 3123 3124
		}
		set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
		mutex_unlock(&cnic_lock);
3125 3126 3127

		if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
			ulp_ops->cnic_start(cp->ulp_handle[if_type]);
3128 3129

		clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
3130 3131 3132
	}
}

3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148
static int cnic_copy_ulp_stats(struct cnic_dev *dev, int ulp_type)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_ulp_ops *ulp_ops;
	int rc;

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

3149 3150 3151
static int cnic_ctl(void *data, struct cnic_ctl_info *info)
{
	struct cnic_dev *dev = data;
3152
	int ulp_type = CNIC_ULP_ISCSI;
3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170

	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;
3171 3172 3173 3174 3175 3176
	case CNIC_CTL_STOP_ISCSI_CMD: {
		struct cnic_local *cp = dev->cnic_priv;
		set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
		queue_delayed_work(cnic_wq, &cp->delete_task, 0);
		break;
	}
3177
	case CNIC_CTL_COMPLETION_CMD: {
3178 3179
		struct cnic_ctl_completion *comp = &info->data.comp;
		u32 cid = BNX2X_SW_CID(comp->cid);
3180 3181 3182 3183 3184 3185
		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];

3186 3187 3188 3189 3190 3191 3192
			if (unlikely(comp->error)) {
				set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags);
				netdev_err(dev->netdev,
					   "CID %x CFC delete comp error %x\n",
					   cid, comp->error);
			}

3193 3194 3195 3196 3197
			ctx->wait_cond = 1;
			wake_up(&ctx->waitq);
		}
		break;
	}
3198 3199 3200 3201 3202 3203 3204 3205 3206
	case CNIC_CTL_FCOE_STATS_GET_CMD:
		ulp_type = CNIC_ULP_FCOE;
		/* fall through */
	case CNIC_CTL_ISCSI_STATS_GET_CMD:
		cnic_hold(dev);
		cnic_copy_ulp_stats(dev, ulp_type);
		cnic_put(dev);
		break;

3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220
	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;

3221
		mutex_lock(&cnic_lock);
3222
		ulp_ops = cnic_ulp_tbl_prot(i);
3223 3224
		if (!ulp_ops || !ulp_ops->cnic_init) {
			mutex_unlock(&cnic_lock);
3225
			continue;
3226 3227 3228
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
3229 3230 3231 3232

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

3233
		ulp_put(ulp_ops);
3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244
	}
}

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;

3245
		mutex_lock(&cnic_lock);
3246
		ulp_ops = cnic_ulp_tbl_prot(i);
3247 3248
		if (!ulp_ops || !ulp_ops->cnic_exit) {
			mutex_unlock(&cnic_lock);
3249
			continue;
3250 3251 3252
		}
		ulp_get(ulp_ops);
		mutex_unlock(&cnic_lock);
3253 3254 3255 3256

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

3257
		ulp_put(ulp_ops);
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 3284 3285 3286 3287 3288 3289 3290
	}
}

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;
3291
	l4kwqe->ipid_start = DEF_IPID_START;
3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475
	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;

3476 3477 3478 3479 3480 3481 3482
	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;
	}

3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515
	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;

3516
		cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
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
		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)
{
3561
#if defined(CONFIG_INET)
3562 3563
	struct rtable *rt;

3564 3565
	rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
	if (!IS_ERR(rt)) {
3566
		*dst = &rt->dst;
3567 3568 3569
		return 0;
	}
	return PTR_ERR(rt);
3570 3571 3572
#else
	return -ENETUNREACH;
#endif
3573 3574 3575 3576 3577
}

static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
			     struct dst_entry **dst)
{
3578
#if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
3579
	struct flowi6 fl6;
3580

3581
	memset(&fl6, 0, sizeof(fl6));
A
Alexey Dobriyan 已提交
3582
	fl6.daddr = dst_addr->sin6_addr;
3583 3584
	if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
		fl6.flowi6_oif = dst_addr->sin6_scope_id;
3585

3586
	*dst = ip6_route_output(&init_net, NULL, &fl6);
3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640
	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;
3641 3642
	int is_v6, rc = 0;
	struct dst_entry *dst = NULL;
3643
	struct net_device *realdev;
3644 3645
	__be16 local_port;
	u32 port_id;
3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659

	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);
3660
		cnic_get_v6_route(&saddr->remote.v6, &dst);
3661 3662 3663 3664 3665 3666 3667

		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 {
3668
		cnic_get_v4_route(&saddr->remote.v4, &dst);
3669 3670 3671 3672 3673 3674

		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;
	}

3675 3676 3677 3678 3679 3680 3681 3682 3683
	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);
		}
	}
3684

3685 3686 3687 3688 3689
	port_id = be16_to_cpu(local_port);
	if (port_id >= CNIC_LOCAL_PORT_MIN &&
	    port_id < CNIC_LOCAL_PORT_MAX) {
		if (cnic_alloc_id(&cp->csk_port_tbl, port_id))
			port_id = 0;
3690
	} else
3691
		port_id = 0;
3692

3693 3694 3695
	if (!port_id) {
		port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
		if (port_id == -1) {
3696 3697 3698
			rc = -ENOMEM;
			goto err_out;
		}
3699
		local_port = cpu_to_be16(port_id);
3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716
	}
	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)
{
3717
	struct cnic_local *cp = csk->dev->cnic_priv;
3718 3719
	int err = 0;

3720 3721 3722
	if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
		return -EOPNOTSUPP;

3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746
	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;
3747
	u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759

	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);
3760 3761
	if (csk->state != opcode)
		return -EALREADY;
3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773

	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);
3774 3775
	} else {
		return -EALREADY;
3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828
	}
	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;
	}
3829 3830 3831 3832 3833 3834 3835 3836
	/* 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;
	}

3837 3838 3839 3840 3841 3842 3843 3844
	csk->pg_cid = kcqe->pg_cid;
	set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
	cnic_cm_conn_req(csk);

done:
	csk_put(csk);
}

M
Michael Chan 已提交
3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856
static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe;
	u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE;
	struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];

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

3857 3858 3859 3860 3861 3862 3863 3864
static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
	u8 opcode = l4kcqe->op_code;
	u32 l5_cid;
	struct cnic_sock *csk;

M
Michael Chan 已提交
3865 3866 3867 3868
	if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
		cnic_process_fcoe_term_conn(dev, kcqe);
		return;
	}
3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889
	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) {
3890 3891 3892 3893 3894 3895 3896
	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;
3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908
	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:
3909 3910
	case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
	case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
3911 3912 3913
		if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_NIC_ERROR)
			set_bit(SK_F_HW_ERR, &csk->flags);

3914 3915 3916 3917
		cp->close_conn(csk, opcode);
		break;

	case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
3918 3919 3920 3921 3922 3923 3924
		/* after we already sent CLOSE_REQ */
		if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) &&
		    !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) &&
		    csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)
			cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP);
		else
			cnic_cm_upcall(cp, csk, opcode);
3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954
		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;
3955
	u32 port_id;
3956 3957 3958 3959 3960 3961

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

3962
	port_id = random32();
3963
	port_id %= CNIC_LOCAL_PORT_RANGE;
3964
	if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
3965
			     CNIC_LOCAL_PORT_MIN, port_id)) {
3966 3967 3968 3969 3970 3971 3972 3973
		cnic_cm_free_mem(dev);
		return -ENOMEM;
	}
	return 0;
}

static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
{
3974 3975 3976 3977
	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;
3978
	}
3979 3980

	/* 1. If event opcode matches the expected event in csk->state
3981 3982
	 * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
	 *    event
3983 3984
	 * 3. If the expected event is 0, meaning the connection was never
	 *    never established, we accept the opcode from cm_abort.
3985
	 */
3986
	if (opcode == csk->state || csk->state == 0 ||
3987 3988
	    csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
	    csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
3989 3990 3991
		if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
			if (csk->state == 0)
				csk->state = opcode;
3992
			return 1;
3993
		}
3994
	}
3995 3996 3997 3998 3999 4000 4001 4002
	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;

4003 4004 4005 4006 4007
	if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
		cnic_cm_upcall(cp, csk, opcode);
		return;
	}

4008
	clear_bit(SK_F_CONNECT_START, &csk->flags);
4009
	cnic_close_conn(csk);
4010
	csk->state = opcode;
4011
	cnic_cm_upcall(cp, csk, opcode);
4012 4013 4014 4015 4016 4017 4018 4019 4020 4021
}

static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
{
}

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

4022
	seed = random32();
4023 4024 4025 4026
	cnic_ctx_wr(dev, 45, 0, seed);
	return 0;
}

4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039
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:
4040
		if (cnic_ready_to_close(csk, opcode)) {
4041 4042 4043
			if (test_bit(SK_F_HW_ERR, &csk->flags))
				close_complete = 1;
			else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
4044 4045 4046 4047
				cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
			else
				close_complete = 1;
		}
4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069
		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)
{
4070 4071 4072 4073 4074 4075 4076 4077
	struct cnic_local *cp = dev->cnic_priv;

	if (!cp->ctx_tbl)
		return;

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

4078
	cnic_bnx2x_delete_wait(dev, 0);
4079 4080 4081 4082 4083 4084 4085

	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));
4086 4087 4088 4089 4090
}

static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
4091
	u32 pfid = cp->pfid;
4092
	u32 port = CNIC_PORT(cp);
4093 4094 4095 4096 4097

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

	CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
4098
		  XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
4099 4100

	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4101
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
4102
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4103
		XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
4104 4105 4106
		DEF_MAX_DA_COUNT);

	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4107
		 XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
4108
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4109
		 XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
4110
	CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
4111
		 XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
4112
	CNIC_WR(dev, BAR_XSTRORM_INTMEM +
4113
		XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
4114

4115
	CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
4116 4117 4118 4119
		DEF_MAX_CWND);
	return 0;
}

4120 4121 4122 4123 4124 4125 4126 4127 4128 4129
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;

4130 4131 4132 4133 4134 4135 4136 4137 4138
	if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
		struct drv_ctl_info info;

		cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);

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

4139 4140
	for (i = 0; i < cp->max_cid_space; i++) {
		struct cnic_context *ctx = &cp->ctx_tbl[i];
4141
		int err;
4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154

		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;

4155
		err = cnic_bnx2x_destroy_ramrod(dev, i);
4156 4157

		cnic_free_bnx2x_conn_resc(dev, i);
4158 4159 4160
		if (!err) {
			if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
				atomic_dec(&cp->iscsi_conn);
4161

4162 4163
			clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
		}
4164 4165 4166 4167 4168 4169 4170 4171
	}

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

}

4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185
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;

4186 4187
	INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);

4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279
	dev->cm_create = cnic_cm_create;
	dev->cm_destroy = cnic_cm_destroy;
	dev->cm_connect = cnic_cm_connect;
	dev->cm_abort = cnic_cm_abort;
	dev->cm_close = cnic_cm_close;
	dev->cm_select_dev = cnic_cm_select_dev;

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

err_out:
	cnic_cm_free_mem(dev);
	return err;
}

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

	cp->stop_cm(dev);

	if (!cp->csk_tbl)
		return 0;

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

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

	return 0;
}

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

	cid_addr = GET_CID_ADDR(cid);

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

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

	if (CHIP_NUM(cp) != CHIP_NUM_5709)
		return 0;

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

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

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

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

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

	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
		cp->disable_int_sync(dev);
M
Michael Chan 已提交
4280
		tasklet_kill(&cp->cnic_irq_task);
4281 4282 4283 4284
		free_irq(ethdev->irq_arr[0].vector, dev);
	}
}

M
Michael Chan 已提交
4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297
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;
}

4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314
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);

4315
		cp->last_status_idx = cp->status_blk.bnx2->status_idx;
4316
		tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
4317
			     (unsigned long) dev);
M
Michael Chan 已提交
4318 4319
		err = cnic_request_irq(dev);
		if (err)
4320
			return err;
M
Michael Chan 已提交
4321

4322
		while (cp->status_blk.bnx2->status_completion_producer_index &&
4323 4324 4325 4326 4327 4328 4329
		       i < 10) {
			CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
				1 << (11 + sblk_num));
			udelay(10);
			i++;
			barrier();
		}
4330
		if (cp->status_blk.bnx2->status_completion_producer_index) {
4331 4332 4333 4334 4335
			cnic_free_irq(dev);
			goto failed;
		}

	} else {
4336
		struct status_block *sblk = cp->status_blk.gen;
4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353
		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:
4354
	netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387
	return -EBUSY;
}

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

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

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

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

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

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

static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
M
Michael Chan 已提交
4388
	struct cnic_uio_dev *udev = cp->udev;
4389 4390 4391 4392
	u32 cid_addr, tx_cid, sb_id;
	u32 val, offset0, offset1, offset2, offset3;
	int i;
	struct tx_bd *txbd;
M
Michael Chan 已提交
4393
	dma_addr_t buf_map, ring_map = udev->l2_ring_map;
4394
	struct status_block *s_blk = cp->status_blk.gen;
4395 4396 4397 4398 4399

	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) {
4400
		struct status_block_msix *sblk = cp->status_blk.bnx2;
4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420

		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 {
4421 4422 4423
		cnic_init_context(dev, tx_cid);
		cnic_init_context(dev, tx_cid + 1);

4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434
		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);

4435
	txbd = udev->l2_ring;
4436

M
Michael Chan 已提交
4437
	buf_map = udev->l2_buf_map;
4438 4439 4440 4441
	for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) {
		txbd->tx_bd_haddr_hi = (u64) buf_map >> 32;
		txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
	}
M
Michael Chan 已提交
4442
	val = (u64) ring_map >> 32;
4443 4444 4445
	cnic_ctx_wr(dev, cid_addr, offset2, val);
	txbd->tx_bd_haddr_hi = val;

M
Michael Chan 已提交
4446
	val = (u64) ring_map & 0xffffffff;
4447 4448 4449 4450 4451 4452 4453 4454
	cnic_ctx_wr(dev, cid_addr, offset3, val);
	txbd->tx_bd_haddr_lo = val;
}

static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
M
Michael Chan 已提交
4455
	struct cnic_uio_dev *udev = cp->udev;
4456 4457 4458
	u32 cid_addr, sb_id, val, coal_reg, coal_val;
	int i;
	struct rx_bd *rxbd;
4459
	struct status_block *s_blk = cp->status_blk.gen;
M
Michael Chan 已提交
4460
	dma_addr_t ring_map = udev->l2_ring_map;
4461 4462 4463 4464 4465 4466 4467

	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) {
4468
		struct status_block_msix *sblk = cp->status_blk.bnx2;
4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488

		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)
4489
		val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
4490
	else
4491
		val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
4492 4493
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);

4494
	rxbd = udev->l2_ring + BCM_PAGE_SIZE;
4495 4496 4497 4498
	for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
		dma_addr_t buf_map;
		int n = (i % cp->l2_rx_ring_size) + 1;

M
Michael Chan 已提交
4499
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4500 4501 4502 4503 4504
		rxbd->rx_bd_len = cp->l2_single_buf_size;
		rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END;
		rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32;
		rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff;
	}
M
Michael Chan 已提交
4505
	val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4506 4507 4508
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
	rxbd->rx_bd_haddr_hi = val;

M
Michael Chan 已提交
4509
	val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522
	cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
	rxbd->rx_bd_haddr_lo = val;

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

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

	memset(&l2kwqe, 0, sizeof(l2kwqe));
	wqes[0] = &l2kwqe;
M
Michael Chan 已提交
4523
	l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
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 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566
			      (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;
4567
	struct status_block *sblk = cp->status_blk.gen;
4568
	u32 val, kcq_cid_addr, kwq_cid_addr;
4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592
	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);

4593
	kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
4594 4595 4596 4597 4598
	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;
4599
	set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
4600 4601 4602 4603 4604 4605 4606 4607 4608

	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;
4609
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
4610 4611

	val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
4612
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4613 4614

	val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
4615
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4616 4617

	val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
4618
	cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4619 4620

	val = (u32) cp->kwq_info.pgtbl_map;
4621 4622 4623 4624
	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;
4625

4626 4627 4628
	cp->kcq1.sw_prod_idx = 0;
	cp->kcq1.hw_prod_idx_ptr =
		(u16 *) &sblk->status_completion_producer_index;
4629

4630
	cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx;
4631 4632 4633 4634

	/* Initialize the kernel complete queue context. */
	val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
	      (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
4635
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
4636 4637

	val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
4638
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
4639 4640

	val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
4641
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
4642

4643 4644
	val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
4645

4646 4647
	val = (u32) cp->kcq1.dma.pgtbl_map;
	cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
4648 4649 4650

	cp->int_num = 0;
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
4651
		struct status_block_msix *msblk = cp->status_blk.bnx2;
4652
		u32 sb_id = cp->status_blk_num;
4653
		u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
4654

4655 4656 4657
		cp->kcq1.hw_prod_idx_ptr =
			(u16 *) &msblk->status_completion_producer_index;
		cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx;
4658
		cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index;
4659
		cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
4660 4661
		cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
		cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
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
	}

	/* 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) {
4688
		netdev_err(dev->netdev, "cnic_init_irq failed\n");
4689 4690 4691 4692 4693 4694 4695 4696
		cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
		cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
		return err;
	}

	return 0;
}

4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723
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;

4724
	tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
4725
		     (unsigned long) dev);
M
Michael Chan 已提交
4726 4727 4728
	if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
		err = cnic_request_irq(dev);

4729 4730 4731
	return err;
}

4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749
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);
}

4750 4751 4752 4753 4754 4755
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 +
4756 4757 4758
			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 +
4759
			offsetof(struct hc_index_data, timeout), 64 / 4);
4760
	cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
4761 4762 4763 4764 4765 4766
}

static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
{
}

4767 4768
static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4769 4770
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4771 4772 4773
	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;
4774
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4775
	int i;
4776
	u32 cli = cp->ethdev->iscsi_l2_client_id;
4777 4778 4779 4780
	u32 val;

	memset(txbd, 0, BCM_PAGE_SIZE);

M
Michael Chan 已提交
4781
	buf_map = udev->l2_buf_map;
4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798
	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);

	}

4799
	val = (u64) ring_map >> 32;
4800 4801
	txbd->next_bd.addr_hi = cpu_to_le32(val);

4802
	data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
4803

4804
	val = (u64) ring_map & 0xffffffff;
4805 4806
	txbd->next_bd.addr_lo = cpu_to_le32(val);

4807
	data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
4808

4809 4810 4811
	/* 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;
4812 4813

	/* reset xstorm per client statistics */
4814
	if (cli < MAX_STAT_COUNTER_ID) {
4815 4816 4817
		data->general.statistics_zero_flg = 1;
		data->general.statistics_en_flg = 1;
		data->general.statistics_counter_id = cli;
4818
	}
4819 4820

	cp->tx_cons_ptr =
4821
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
4822 4823
}

4824 4825
static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
				    struct client_init_ramrod_data *data)
4826 4827
{
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
4828 4829
	struct cnic_uio_dev *udev = cp->udev;
	struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
4830 4831
				BCM_PAGE_SIZE);
	struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
M
Michael Chan 已提交
4832
				(udev->l2_ring + (2 * BCM_PAGE_SIZE));
4833
	struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
4834
	int i;
4835
	u32 cli = cp->ethdev->iscsi_l2_client_id;
4836
	int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
4837
	u32 val;
M
Michael Chan 已提交
4838
	dma_addr_t ring_map = udev->l2_ring_map;
4839 4840 4841 4842 4843

	/* General data */
	data->general.client_id = cli;
	data->general.activate_flg = 1;
	data->general.sp_client_id = cli;
4844 4845
	data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
	data->general.func_id = cp->pfid;
4846 4847 4848 4849 4850

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

M
Michael Chan 已提交
4851
		buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
4852 4853 4854 4855
		rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
		rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
	}

4856
	val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
4857
	rxbd->addr_hi = cpu_to_le32(val);
4858
	data->rx.bd_page_base.hi = cpu_to_le32(val);
4859

4860
	val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
4861
	rxbd->addr_lo = cpu_to_le32(val);
4862
	data->rx.bd_page_base.lo = cpu_to_le32(val);
4863 4864

	rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
4865
	val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
4866
	rxcqe->addr_hi = cpu_to_le32(val);
4867
	data->rx.cqe_page_base.hi = cpu_to_le32(val);
4868

4869
	val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
4870
	rxcqe->addr_lo = cpu_to_le32(val);
4871
	data->rx.cqe_page_base.lo = cpu_to_le32(val);
4872

4873 4874 4875 4876
	/* 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;
4877

4878
	data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
4879

4880
	data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
4881
	data->rx.outer_vlan_removal_enable_flg = 1;
4882 4883 4884
	data->rx.silent_vlan_removal_flg = 1;
	data->rx.silent_vlan_value = 0;
	data->rx.silent_vlan_mask = 0xffff;
4885 4886

	cp->rx_cons_ptr =
4887
		&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
4888
	cp->rx_cons = *cp->rx_cons_ptr;
4889 4890
}

M
Michael Chan 已提交
4891 4892 4893 4894 4895 4896 4897 4898 4899
static void cnic_init_bnx2x_kcq(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
	u32 pfid = cp->pfid;

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

4900
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915
		struct host_hc_status_block_e2 *sb = cp->status_blk.gen;

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

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

4916
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928
		struct host_hc_status_block_e2 *sb = cp->status_blk.gen;

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

4929 4930 4931
static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
{
	struct cnic_local *cp = dev->cnic_priv;
4932
	struct cnic_eth_dev *ethdev = cp->ethdev;
4933
	int func = CNIC_FUNC(cp), ret;
4934
	u32 pfid;
4935

4936
	dev->stats_addr = ethdev->addr_drv_info_to_mcp;
4937 4938 4939
	cp->port_mode = CHIP_PORT_MODE_NONE;

	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
M
Michael Chan 已提交
4940 4941 4942 4943 4944 4945 4946
		u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR);

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

4947 4948
		if (val) {
			cp->port_mode = CHIP_4_PORT_MODE;
M
Michael Chan 已提交
4949
			cp->pfid = func >> 1;
4950
		} else {
M
Michael Chan 已提交
4951
			cp->port_mode = CHIP_2_PORT_MODE;
M
Michael Chan 已提交
4952
			cp->pfid = func & 0x6;
4953
		}
M
Michael Chan 已提交
4954 4955 4956
	} else {
		cp->pfid = func;
	}
4957 4958
	pfid = cp->pfid;

4959
	ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
4960
			       cp->iscsi_start_cid, 0);
4961 4962 4963 4964

	if (ret)
		return -ENOMEM;

4965
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
4966
		ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
4967
					cp->fcoe_start_cid, 0);
M
Michael Chan 已提交
4968 4969 4970 4971 4972

		if (ret)
			return -ENOMEM;
	}

4973 4974
	cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;

M
Michael Chan 已提交
4975
	cnic_init_bnx2x_kcq(dev);
4976 4977

	/* Only 1 EQ */
4978
	CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
4979
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4980
		CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
4981
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4982
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
4983
		cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
4984
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4985
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
4986
		(u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
4987
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4988
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
4989
		cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
4990
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
4991
		CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
4992
		(u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
4993
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4994
		CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
4995
	CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
4996
		CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
4997
	CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
4998
		CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
4999
		HC_INDEX_ISCSI_EQ_CONS);
5000 5001

	CNIC_WR(dev, BAR_USTRORM_INTMEM +
5002
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
5003 5004
		cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
	CNIC_WR(dev, BAR_USTRORM_INTMEM +
5005
		USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
5006 5007
		(u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);

5008 5009 5010
	CNIC_WR(dev, BAR_TSTRORM_INTMEM +
		TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);

5011 5012 5013 5014 5015 5016 5017 5018 5019
	cnic_setup_bnx2x_context(dev);

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

	return 0;
}

M
Michael Chan 已提交
5020 5021
static void cnic_init_rings(struct cnic_dev *dev)
{
M
Michael Chan 已提交
5022
	struct cnic_local *cp = dev->cnic_priv;
M
Michael Chan 已提交
5023
	struct cnic_uio_dev *udev = cp->udev;
M
Michael Chan 已提交
5024 5025 5026 5027

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

M
Michael Chan 已提交
5028 5029 5030
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
		cnic_init_bnx2_tx_ring(dev);
		cnic_init_bnx2_rx_ring(dev);
M
Michael Chan 已提交
5031
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5032
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5033 5034
		u32 cli = cp->ethdev->iscsi_l2_client_id;
		u32 cid = cp->ethdev->iscsi_l2_cid;
5035
		u32 cl_qzone_id;
5036
		struct client_init_ramrod_data *data;
5037 5038
		union l5cm_specific_data l5_data;
		struct ustorm_eth_rx_producers rx_prods = {0};
5039
		u32 off, i, *cid_ptr;
5040 5041 5042 5043 5044

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

5045 5046
		cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);

5047
		off = BAR_USTRORM_INTMEM +
5048
			(BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) ?
M
Michael Chan 已提交
5049 5050
			 USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
			 USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
5051 5052

		for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
5053
			CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
5054

5055 5056
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

M
Michael Chan 已提交
5057
		data = udev->l2_buf;
5058
		cid_ptr = udev->l2_buf + 12;
5059 5060 5061 5062 5063 5064

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

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

M
Michael Chan 已提交
5065 5066
		l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
		l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
5067

M
Michael Chan 已提交
5068 5069
		set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);

5070
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
5071
			cid, ETH_CONNECTION_TYPE, &l5_data);
5072

5073 5074 5075 5076 5077 5078 5079 5080
		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");
5081
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5082
		cnic_ring_ctl(dev, cid, cli, 1);
5083
		*cid_ptr = cid;
M
Michael Chan 已提交
5084 5085 5086 5087 5088
	}
}

static void cnic_shutdown_rings(struct cnic_dev *dev)
{
M
Michael Chan 已提交
5089
	struct cnic_local *cp = dev->cnic_priv;
5090 5091
	struct cnic_uio_dev *udev = cp->udev;
	void *rx_ring;
M
Michael Chan 已提交
5092 5093 5094 5095

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

M
Michael Chan 已提交
5096 5097
	if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
		cnic_shutdown_bnx2_rx_ring(dev);
5098
	} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
5099 5100
		u32 cli = cp->ethdev->iscsi_l2_client_id;
		u32 cid = cp->ethdev->iscsi_l2_cid;
M
Michael Chan 已提交
5101
		union l5cm_specific_data l5_data;
5102
		int i;
5103

5104
		cnic_ring_ctl(dev, cid, cli, 0);
M
Michael Chan 已提交
5105

5106 5107
		set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);

M
Michael Chan 已提交
5108 5109 5110
		l5_data.phy_address.lo = cli;
		l5_data.phy_address.hi = 0;
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
5111
			cid, ETH_CONNECTION_TYPE, &l5_data);
5112 5113 5114 5115 5116 5117 5118 5119
		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");
5120
		cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
5121 5122

		memset(&l5_data, 0, sizeof(l5_data));
5123
		cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
5124
			cid, NONE_CONNECTION_TYPE, &l5_data);
5125
		msleep(10);
M
Michael Chan 已提交
5126
	}
M
Michael Chan 已提交
5127
	clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
5128 5129
	rx_ring = udev->l2_ring + BCM_PAGE_SIZE;
	memset(rx_ring, 0, BCM_PAGE_SIZE);
M
Michael Chan 已提交
5130 5131
}

5132
static int cnic_register_netdev(struct cnic_dev *dev)
5133 5134 5135 5136 5137
{
	struct cnic_local *cp = dev->cnic_priv;
	struct cnic_eth_dev *ethdev = cp->ethdev;
	int err;

5138 5139 5140 5141 5142
	if (!ethdev)
		return -ENODEV;

	if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
		return 0;
5143 5144

	err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
5145
	if (err)
5146
		netdev_err(dev->netdev, "register_cnic failed\n");
5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169

	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;
5170 5171 5172 5173

	dev->regview = ethdev->io_base;
	pci_dev_get(dev->pcidev);
	cp->func = PCI_FUNC(dev->pcidev->devfn);
5174
	cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
5175 5176 5177 5178
	cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;

	err = cp->alloc_resc(dev);
	if (err) {
5179
		netdev_err(dev->netdev, "allocate resource failure\n");
5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218
		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);
}

5219 5220 5221 5222 5223 5224

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

	cnic_free_irq(dev);
5225
	*cp->kcq1.hw_prod_idx_ptr = 0;
5226
	CNIC_WR(dev, BAR_CSTRORM_INTMEM +
5227
		CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
5228
	CNIC_WR16(dev, cp->kcq1.io_addr, 0);
5229 5230 5231
	cnic_free_resc(dev);
}

5232 5233 5234 5235
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;
5236
		int i = 0;
5237

5238 5239 5240
		/* Need to wait for the ring shutdown event to complete
		 * before clearing the CNIC_UP flag.
		 */
M
Michael Chan 已提交
5241
		while (cp->udev->uio_dev != -1 && i < 15) {
5242 5243 5244
			msleep(100);
			i++;
		}
5245
		cnic_shutdown_rings(dev);
5246
		clear_bit(CNIC_F_CNIC_UP, &dev->flags);
5247
		RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263
		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)
5264
		netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
5265

5266
	netdev_info(dev->netdev, "Removed CNIC device\n");
5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281
	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) {
5282
		netdev_err(dev, "allocate dev struct failure\n");
5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298
		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);

5299
	netdev_info(dev, "Added CNIC device\n");
5300 5301 5302 5303 5304 5305 5306 5307 5308 5309

	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;
5310
	struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
5311

5312
	probe = symbol_get(bnx2_cnic_probe);
5313 5314
	if (probe) {
		ethdev = (*probe)(dev);
5315
		symbol_put(bnx2_cnic_probe);
5316 5317 5318 5319 5320 5321 5322 5323 5324 5325
	}
	if (!ethdev)
		return NULL;

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

	dev_hold(dev);
	pci_dev_get(pdev);
5326 5327 5328 5329 5330
	if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
	     pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
	    (pdev->revision < 0x10)) {
		pci_dev_put(pdev);
		goto cnic_err;
5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341 5342 5343
	}
	pci_dev_put(pdev);

	cdev = cnic_alloc_dev(dev, pdev);
	if (cdev == NULL)
		goto cnic_err;

	set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
	cdev->submit_kwqes = cnic_submit_bnx2_kwqes;

	cp = cdev->cnic_priv;
	cp->ethdev = ethdev;
	cdev->pcidev = pdev;
M
Michael Chan 已提交
5344
	cp->chip_id = ethdev->chip_id;
5345

5346 5347
	cdev->max_iscsi_conn = ethdev->max_iscsi_conn;

5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365
	cp->cnic_ops = &cnic_bnx2_ops;
	cp->start_hw = cnic_start_bnx2_hw;
	cp->stop_hw = cnic_stop_bnx2_hw;
	cp->setup_pgtbl = cnic_setup_page_tbl;
	cp->alloc_resc = cnic_alloc_bnx2_resc;
	cp->free_resc = cnic_free_resc;
	cp->start_cm = cnic_cm_init_bnx2_hw;
	cp->stop_cm = cnic_cm_stop_bnx2_hw;
	cp->enable_int = cnic_enable_bnx2_int;
	cp->disable_int_sync = cnic_disable_bnx2_int_sync;
	cp->close_conn = cnic_close_bnx2_conn;
	return cdev;

cnic_err:
	dev_put(dev);
	return NULL;
}

5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398
static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
{
	struct pci_dev *pdev;
	struct cnic_dev *cdev;
	struct cnic_local *cp;
	struct cnic_eth_dev *ethdev = NULL;
	struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;

	probe = symbol_get(bnx2x_cnic_probe);
	if (probe) {
		ethdev = (*probe)(dev);
		symbol_put(bnx2x_cnic_probe);
	}
	if (!ethdev)
		return NULL;

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

	dev_hold(dev);
	cdev = cnic_alloc_dev(dev, pdev);
	if (cdev == NULL) {
		dev_put(dev);
		return NULL;
	}

	set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
	cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;

	cp = cdev->cnic_priv;
	cp->ethdev = ethdev;
	cdev->pcidev = pdev;
M
Michael Chan 已提交
5399
	cp->chip_id = ethdev->chip_id;
5400

5401 5402
	cdev->stats_addr = ethdev->addr_drv_info_to_mcp;

5403 5404
	if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
		cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
5405
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) &&
5406 5407 5408
	    !(ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE))
		cdev->max_fcoe_conn = ethdev->max_fcoe_conn;

5409 5410 5411
	if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
		cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;

5412 5413
	memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);

5414 5415 5416 5417 5418 5419 5420 5421 5422 5423
	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;
5424
	if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
M
Michael Chan 已提交
5425 5426 5427
		cp->ack_int = cnic_ack_bnx2x_e2_msix;
	else
		cp->ack_int = cnic_ack_bnx2x_msix;
5428 5429 5430 5431
	cp->close_conn = cnic_close_bnx2x_conn;
	return cdev;
}

5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442
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);
5443 5444
		if (!strcmp(drvinfo.driver, "bnx2x"))
			cdev = init_bnx2x_cnic(dev);
5445 5446 5447 5448 5449 5450 5451 5452 5453
		if (cdev) {
			write_lock(&cnic_dev_lock);
			list_add(&cdev->list, &cnic_dev_list);
			write_unlock(&cnic_dev_lock);
		}
	}
	return cdev;
}

5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474
static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event,
			      u16 vlan_id)
{
	int if_type;

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

		ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
		if (!ulp_ops || !ulp_ops->indicate_netevent)
			continue;

		ctx = cp->ulp_handle[if_type];

		ulp_ops->indicate_netevent(ctx, event, vlan_id);
	}
	rcu_read_unlock();
}

5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486
/**
 * netdev event handler
 */
static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
							 void *ptr)
{
	struct net_device *netdev = ptr;
	struct cnic_dev *dev;
	int new_dev = 0;

	dev = cnic_from_netdev(netdev);

5487
	if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) {
5488 5489 5490 5491 5492 5493 5494 5495 5496 5497 5498 5499 5500 5501
		/* 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);
5502

5503
		if (event == NETDEV_UP || (new_dev && netif_running(netdev))) {
5504 5505 5506 5507
			if (cnic_register_netdev(dev) != 0) {
				cnic_put(dev);
				goto done;
			}
5508 5509 5510 5511
			if (!cnic_start_hw(dev))
				cnic_ulp_start(dev);
		}

5512
		cnic_rcv_netevent(cp, event, 0);
5513 5514 5515 5516

		if (event == NETDEV_GOING_DOWN) {
			cnic_ulp_stop(dev);
			cnic_stop_hw(dev);
5517
			cnic_unregister_netdev(dev);
5518 5519 5520 5521 5522 5523 5524 5525 5526 5527
		} 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);
5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540
	} else {
		struct net_device *realdev;
		u16 vid;

		vid = cnic_get_vlan(netdev, &realdev);
		if (realdev) {
			dev = cnic_from_netdev(realdev);
			if (dev) {
				vid |= VLAN_TAG_PRESENT;
				cnic_rcv_netevent(dev->cnic_priv, event, vid);
				cnic_put(dev);
			}
		}
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	}
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;
5553
	struct cnic_uio_dev *udev;
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	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);
5563
		cnic_unregister_netdev(dev);
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		list_del_init(&dev->list);
		cnic_free_dev(dev);
	}
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	while (!list_empty(&cnic_udev_list)) {
		udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
				  list);
		cnic_free_uio(udev);
	}
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}

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

5578
	pr_info("%s", version);
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	rc = register_netdevice_notifier(&cnic_netdev_notifier);
	if (rc) {
		cnic_release();
		return rc;
	}

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	cnic_wq = create_singlethread_workqueue("cnic_wq");
	if (!cnic_wq) {
		cnic_release();
		unregister_netdevice_notifier(&cnic_netdev_notifier);
		return -ENOMEM;
	}

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	return 0;
}

static void __exit cnic_exit(void)
{
	unregister_netdevice_notifier(&cnic_netdev_notifier);
	cnic_release();
5600
	destroy_workqueue(cnic_wq);
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}

module_init(cnic_init);
module_exit(cnic_exit);