blob: 8bc126a156e80a1d18366a4b6cc3bd8cd2764954 [file] [log] [blame]
/* cnic.c: QLogic CNIC core network driver.
*
* Copyright (c) 2006-2014 Broadcom Corporation
* Copyright (c) 2014-2015 QLogic Corporation
*
* 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)
* Previously modified and maintained by: Michael Chan <mchan@broadcom.com>
* Maintained By: Dept-HSGLinuxNICDev@qlogic.com
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#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>
#include <linux/prefetch.h>
#include <linux/random.h>
#if IS_ENABLED(CONFIG_VLAN_8021Q)
#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>
#include <net/ip6_checksum.h>
#include <scsi/iscsi_if.h>
#define BCM_CNIC 1
#include "cnic_if.h"
#include "bnx2.h"
#include "bnx2x/bnx2x.h"
#include "bnx2x/bnx2x_reg.h"
#include "bnx2x/bnx2x_fw_defs.h"
#include "bnx2x/bnx2x_hsi.h"
#include "../../../scsi/bnx2i/57xx_iscsi_constants.h"
#include "../../../scsi/bnx2i/57xx_iscsi_hsi.h"
#include "../../../scsi/bnx2fc/bnx2fc_constants.h"
#include "cnic.h"
#include "cnic_defs.h"
#define CNIC_MODULE_NAME "cnic"
static char version[] =
"QLogic " CNIC_MODULE_NAME "Driver v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n";
MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) "
"Chen (zongxi@broadcom.com");
MODULE_DESCRIPTION("QLogic cnic Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(CNIC_MODULE_VERSION);
/* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */
static LIST_HEAD(cnic_dev_list);
static LIST_HEAD(cnic_udev_list);
static DEFINE_RWLOCK(cnic_dev_lock);
static DEFINE_MUTEX(cnic_lock);
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));
}
static int cnic_service_bnx2(void *, void *);
static int cnic_service_bnx2x(void *, void *);
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,
};
static struct cnic_ops cnic_bnx2x_ops = {
.cnic_owner = THIS_MODULE,
.cnic_handler = cnic_service_bnx2x,
.cnic_ctl = cnic_ctl,
};
static struct workqueue_struct *cnic_wq;
static void cnic_shutdown_rings(struct cnic_dev *);
static void cnic_init_rings(struct cnic_dev *);
static int cnic_cm_set_pg(struct cnic_sock *);
static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode)
{
struct cnic_uio_dev *udev = uinfo->priv;
struct cnic_dev *dev;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (udev->uio_dev != -1)
return -EBUSY;
rtnl_lock();
dev = udev->dev;
if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
rtnl_unlock();
return -ENODEV;
}
udev->uio_dev = iminor(inode);
cnic_shutdown_rings(dev);
cnic_init_rings(dev);
rtnl_unlock();
return 0;
}
static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
{
struct cnic_uio_dev *udev = uinfo->priv;
udev->uio_dev = -1;
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;
}
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);
}
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;
memset(&info, 0, sizeof(struct drv_ctl_info));
info.cmd = DRV_CTL_CTX_WR_CMD;
io->cid_addr = cid_addr;
io->offset = off;
io->data = val;
ethdev->drv_ctl(dev->netdev, &info);
}
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;
memset(&info, 0, sizeof(struct drv_ctl_info));
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;
memset(&info, 0, sizeof(struct drv_ctl_info));
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);
}
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;
memset(&info, 0, sizeof(struct drv_ctl_info));
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;
memset(&info, 0, sizeof(struct drv_ctl_info));
info.cmd = DRV_CTL_IO_RD_CMD;
io->offset = off;
ethdev->drv_ctl(dev->netdev, &info);
return io->data;
}
static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg, int state)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_eth_dev *ethdev = cp->ethdev;
struct drv_ctl_info info;
struct fcoe_capabilities *fcoe_cap =
&info.data.register_data.fcoe_features;
memset(&info, 0, sizeof(struct drv_ctl_info));
if (reg) {
info.cmd = DRV_CTL_ULP_REGISTER_CMD;
if (ulp_type == CNIC_ULP_FCOE && dev->fcoe_cap)
memcpy(fcoe_cap, dev->fcoe_cap, sizeof(*fcoe_cap));
} else {
info.cmd = DRV_CTL_ULP_UNREGISTER_CMD;
}
info.data.ulp_type = ulp_type;
info.drv_state = state;
ethdev->drv_ctl(dev->netdev, &info);
}
static int cnic_in_use(struct cnic_sock *csk)
{
return test_bit(SK_F_INUSE, &csk->flags);
}
static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_eth_dev *ethdev = cp->ethdev;
struct drv_ctl_info info;
memset(&info, 0, sizeof(struct drv_ctl_info));
info.cmd = cmd;
info.data.credit.credit_count = count;
ethdev->drv_ctl(dev->netdev, &info);
}
static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid)
{
u32 i;
if (!cp->ctx_tbl)
return -EINVAL;
for (i = 0; i < cp->max_cid_space; i++) {
if (cp->ctx_tbl[i].cid == cid) {
*l5_cid = i;
return 0;
}
}
return -EINVAL;
}
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;
struct cnic_uio_dev *udev = cp->udev;
int rc = 0, retry = 0;
if (!udev || udev->uio_dev == -1)
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;
}
while (retry < 3) {
rc = 0;
rcu_read_lock();
ulp_ops = rcu_dereference(cp->ulp_ops[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++;
}
return rc;
}
static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8);
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;
if (!rcu_access_pointer(cp->ulp_ops[CNIC_ULP_L4])) {
rc = -ENODEV;
break;
}
csk = &cp->csk_tbl[l5_cid];
csk_hold(csk);
if (cnic_in_use(csk) &&
test_bit(SK_F_CONNECT_START, &csk->flags)) {
csk->vlan_id = path_resp->vlan_id;
memcpy(csk->ha, path_resp->mac_addr, ETH_ALEN);
if (test_bit(SK_F_IPV6, &csk->flags))
memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
sizeof(struct in6_addr));
else
memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
sizeof(struct in_addr));
if (is_valid_ether_addr(csk->ha)) {
cnic_cm_set_pg(csk);
} 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);
}
}
csk_put(csk);
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_atomic();
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_atomic();
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;
if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
pr_err("%s: Bad type %d\n", __func__, ulp_type);
return -EINVAL;
}
mutex_lock(&cnic_lock);
if (cnic_ulp_tbl_prot(ulp_type)) {
pr_err("%s: Type %d has already been registered\n",
__func__, ulp_type);
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);
atomic_set(&ulp_ops->ref_count, 0);
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;
struct cnic_ulp_ops *ulp_ops;
int i = 0;
if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
pr_err("%s: Bad type %d\n", __func__, ulp_type);
return -EINVAL;
}
mutex_lock(&cnic_lock);
ulp_ops = cnic_ulp_tbl_prot(ulp_type);
if (!ulp_ops) {
pr_err("%s: Type %d has not been registered\n",
__func__, ulp_type);
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_access_pointer(cp->ulp_ops[ulp_type])) {
pr_err("%s: Type %d still has devices registered\n",
__func__, ulp_type);
read_unlock(&cnic_dev_lock);
goto out_unlock;
}
}
read_unlock(&cnic_dev_lock);
RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
mutex_unlock(&cnic_lock);
synchronize_rcu();
while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
msleep(100);
i++;
}
if (atomic_read(&ulp_ops->ref_count) != 0)
pr_warn("%s: Failed waiting for ref count to go to zero\n",
__func__);
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;
if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
pr_err("%s: Bad type %d\n", __func__, ulp_type);
return -EINVAL;
}
mutex_lock(&cnic_lock);
if (cnic_ulp_tbl_prot(ulp_type) == NULL) {
pr_err("%s: Driver with type %d has not been registered\n",
__func__, ulp_type);
mutex_unlock(&cnic_lock);
return -EAGAIN;
}
if (rcu_access_pointer(cp->ulp_ops[ulp_type])) {
pr_err("%s: Type %d has already been registered to this device\n",
__func__, ulp_type);
mutex_unlock(&cnic_lock);
return -EBUSY;
}
clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]);
cp->ulp_handle[ulp_type] = ulp_ctx;
ulp_ops = cnic_ulp_tbl_prot(ulp_type);
rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
cnic_hold(dev);
if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
mutex_unlock(&cnic_lock);
cnic_ulp_ctl(dev, ulp_type, true, DRV_ACTIVE);
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;
int i = 0;
if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) {
pr_err("%s: Bad type %d\n", __func__, ulp_type);
return -EINVAL;
}
if (ulp_type == CNIC_ULP_ISCSI)
cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
mutex_lock(&cnic_lock);
if (rcu_access_pointer(cp->ulp_ops[ulp_type])) {
RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
cnic_put(dev);
} else {
pr_err("%s: device not registered to this ulp type %d\n",
__func__, ulp_type);
mutex_unlock(&cnic_lock);
return -EINVAL;
}
mutex_unlock(&cnic_lock);
if (ulp_type == CNIC_ULP_FCOE)
dev->fcoe_cap = NULL;
synchronize_rcu();
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]))
netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n");
if (test_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
cnic_ulp_ctl(dev, ulp_type, false, DRV_UNLOADED);
else
cnic_ulp_ctl(dev, ulp_type, false, DRV_INACTIVE);
return 0;
}
EXPORT_SYMBOL(cnic_unregister_driver);
static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id,
u32 next)
{
id_tbl->start = start_id;
id_tbl->max = size;
id_tbl->next = next;
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]) {
dma_free_coherent(&dev->pcidev->dev, CNIC_PAGE_SIZE,
dma->pg_arr[i], dma->pg_map_arr[i]);
dma->pg_arr[i] = NULL;
}
}
if (dma->pgtbl) {
dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size,
dma->pgtbl, dma->pgtbl_map);
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;
__le32 *page_table = (__le32 *) dma->pgtbl;
for (i = 0; i < dma->num_pages; i++) {
/* Each entry needs to be in big endian format. */
*page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
page_table++;
*page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
page_table++;
}
}
static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
{
int i;
__le32 *page_table = (__le32 *) dma->pgtbl;
for (i = 0; i < dma->num_pages; i++) {
/* Each entry needs to be in little endian format. */
*page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff);
page_table++;
*page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32);
page_table++;
}
}
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++) {
dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev,
CNIC_PAGE_SIZE,
&dma->pg_map_arr[i],
GFP_ATOMIC);
if (dma->pg_arr[i] == NULL)
goto error;
}
if (!use_pg_tbl)
return 0;
dma->pgtbl_size = ((pages * 8) + CNIC_PAGE_SIZE - 1) &
~(CNIC_PAGE_SIZE - 1);
dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size,
&dma->pgtbl_map, GFP_ATOMIC);
if (dma->pgtbl == NULL)
goto error;
cp->setup_pgtbl(dev, dma);
return 0;
error:
cnic_free_dma(dev, dma);
return -ENOMEM;
}
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) {
dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
cp->ctx_arr[i].ctx,
cp->ctx_arr[i].mapping);
cp->ctx_arr[i].ctx = NULL;
}
}
}
static void __cnic_free_uio_rings(struct cnic_uio_dev *udev)
{
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;
}
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;
}
}
static void __cnic_free_uio(struct cnic_uio_dev *udev)
{
uio_unregister_device(&udev->cnic_uinfo);
__cnic_free_uio_rings(udev);
pci_dev_put(udev->pdev);
kfree(udev);
}
static void cnic_free_uio(struct cnic_uio_dev *udev)
{
if (!udev)
return;
write_lock(&cnic_dev_lock);
list_del_init(&udev->list);
write_unlock(&cnic_dev_lock);
__cnic_free_uio(udev);
}
static void cnic_free_resc(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_uio_dev *udev = cp->udev;
if (udev) {
udev->dev = NULL;
cp->udev = NULL;
if (udev->uio_dev == -1)
__cnic_free_uio_rings(udev);
}
cnic_free_context(dev);
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);
cnic_free_dma(dev, &cp->kwq_16_data_info);
cnic_free_dma(dev, &cp->kcq2.dma);
cnic_free_dma(dev, &cp->kcq1.dma);
kfree(cp->iscsi_tbl);
cp->iscsi_tbl = NULL;
kfree(cp->ctx_tbl);
cp->ctx_tbl = NULL;
cnic_free_id_tbl(&cp->fcoe_cid_tbl);
cnic_free_id_tbl(&cp->cid_tbl);
}
static int cnic_alloc_context(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
if (BNX2_CHIP(cp) == BNX2_CHIP_5709) {
int i, k, arr_size;
cp->ctx_blk_size = CNIC_PAGE_SIZE;
cp->cids_per_blk = CNIC_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 =
dma_alloc_coherent(&dev->pcidev->dev,
CNIC_PAGE_SIZE,
&cp->ctx_arr[i].mapping,
GFP_KERNEL);
if (cp->ctx_arr[i].ctx == NULL)
return -ENOMEM;
}
}
return 0;
}
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)
{
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;
struct kcqe **kcq;
if (use_pg_tbl)
use_page_tbl = 1;
err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
if (err)
return err;
kcq = (struct kcqe **) info->dma.pg_arr;
info->kcq = kcq;
info->next_idx = cnic_bnx2_next_idx;
info->hw_idx = cnic_bnx2_hw_idx;
if (use_pg_tbl)
return 0;
info->next_idx = cnic_bnx2x_next_idx;
info->hw_idx = cnic_bnx2x_hw_idx;
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;
}
static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages)
{
struct cnic_local *cp = udev->dev->cnic_priv;
if (udev->l2_ring)
return 0;
udev->l2_ring_size = pages * CNIC_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)
return -ENOMEM;
udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
udev->l2_buf_size = CNIC_PAGE_ALIGN(udev->l2_buf_size);
udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
&udev->l2_buf_map,
GFP_KERNEL | __GFP_COMP);
if (!udev->l2_buf) {
__cnic_free_uio_rings(udev);
return -ENOMEM;
}
return 0;
}
static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_uio_dev *udev;
list_for_each_entry(udev, &cnic_udev_list, list) {
if (udev->pdev == dev->pcidev) {
udev->dev = dev;
if (__cnic_alloc_uio_rings(udev, pages)) {
udev->dev = NULL;
return -ENOMEM;
}
cp->udev = udev;
return 0;
}
}
udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC);
if (!udev)
return -ENOMEM;
udev->uio_dev = -1;
udev->dev = dev;
udev->pdev = dev->pcidev;
if (__cnic_alloc_uio_rings(udev, pages))
goto err_udev;
list_add(&udev->list, &cnic_udev_list);
pci_dev_get(udev->pdev);
cp->udev = udev;
return 0;
err_udev:
kfree(udev);
return -ENOMEM;
}
static int cnic_init_uio(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_uio_dev *udev = cp->udev;
struct uio_info *uinfo;
int ret = 0;
if (!udev)
return -ENOMEM;
uinfo = &udev->cnic_uinfo;
uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0);
uinfo->mem[0].internal_addr = dev->regview;
uinfo->mem[0].memtype = UIO_MEM_PHYS;
if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID +
TX_MAX_TSS_RINGS + 1);
uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen &
CNIC_PAGE_MASK;
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";
} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0);
uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
CNIC_PAGE_MASK;
uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk);
uinfo->name = "bnx2x_cnic";
}
uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
uinfo->mem[2].addr = (unsigned long) udev->l2_ring;
uinfo->mem[2].size = udev->l2_ring_size;
uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
uinfo->mem[3].addr = (unsigned long) udev->l2_buf;
uinfo->mem[3].size = udev->l2_buf_size;
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;
if (udev->uio_dev == -1) {
if (!uinfo->priv) {
uinfo->priv = udev;
ret = uio_register_device(&udev->pdev->dev, uinfo);
}
} else {
cnic_init_rings(dev);
}
return ret;
}
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;
ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
if (ret)
goto error;
ret = cnic_alloc_context(dev);
if (ret)
goto error;
ret = cnic_alloc_uio_rings(dev, 2);
if (ret)
goto error;
ret = cnic_init_uio(dev);
if (ret)
goto error;
return 0;
error:
cnic_free_resc(dev);
return ret;
}
static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
struct bnx2x *bp = netdev_priv(dev->netdev);
int ctx_blk_size = cp->ethdev->ctx_blk_size;
int total_mem, blks, i;
total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space;
blks = total_mem / ctx_blk_size;
if (total_mem % ctx_blk_size)
blks++;
if (blks > cp->ethdev->ctx_tbl_len)
return -ENOMEM;
cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL);
if (cp->ctx_arr == NULL)
return -ENOMEM;
cp->ctx_blks = blks;
cp->ctx_blk_size = ctx_blk_size;
if (!CHIP_IS_E1(bp))
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 =
dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size,
&cp->ctx_arr[i].mapping,
GFP_KERNEL);
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;
struct bnx2x *bp = netdev_priv(dev->netdev);
struct cnic_eth_dev *ethdev = cp->ethdev;
u32 start_cid = ethdev->starting_cid;
int i, j, n, ret, pages;
struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
cp->max_cid_space = MAX_ISCSI_TBL_SZ;
cp->iscsi_start_cid = start_cid;
cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ;
if (BNX2X_CHIP_IS_E2_PLUS(bp)) {
cp->max_cid_space += dev->max_fcoe_conn;
cp->fcoe_init_cid = ethdev->fcoe_init_cid;
if (!cp->fcoe_init_cid)
cp->fcoe_init_cid = 0x10;
}
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) *
cp->max_cid_space, GFP_KERNEL);
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;
}
for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++)
cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE;
pages = CNIC_PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
CNIC_PAGE_SIZE;
ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
if (ret)
goto error;
n = CNIC_PAGE_SIZE / CNIC_KWQ16_DATA_SIZE;
for (i = 0, j = 0; i < cp->max_cid_space; i++) {
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++;
}
ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
if (ret)
goto error;
if (CNIC_SUPPORTS_FCOE(bp)) {
ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
if (ret)
goto error;
}
pages = CNIC_PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / CNIC_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;
if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
return 0;
cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
cp->l2_rx_ring_size = 15;
ret = cnic_alloc_uio_rings(dev, 4);
if (ret)
goto error;
ret = cnic_init_uio(dev);
if (ret)
goto error;
return 0;
error:
cnic_free_resc(dev);
return -ENOMEM;
}
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) &&
!test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) {
spin_unlock_bh(&cp->cnic_ulp_lock);
return -EAGAIN;
}
clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
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;
}
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 bnx2x *bp = netdev_priv(dev->netdev);
struct l5cm_spe kwqe;
struct kwqe_16 *kwq[1];
u16 type_16;
int ret;
kwqe.hdr.conn_and_cmd_data =
cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
BNX2X_HW_CID(bp, cid)));
type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE;
type_16 |= (bp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) &
SPE_HDR_FUNCTION_ID;
kwqe.hdr.type = cpu_to_le16(type_16);
kwqe.hdr.reserved1 = 0;
kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo);
kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi);
kwq[0] = (struct kwqe_16 *) &kwqe;
spin_lock_bh(&cp->cnic_ulp_lock);
ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1);
spin_unlock_bh(&cp->cnic_ulp_lock);
if (ret == 1)
return 0;
return ret;
}
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 void cnic_bnx2x_set_tcp_options(struct cnic_dev *dev, int time_stamps,
int en_tcp_dack)
{
struct bnx2x *bp = netdev_priv(dev->netdev);
u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN;
u16 tstorm_flags = 0;
if (time_stamps) {
xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED;
}
if (en_tcp_dack)
tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_DELAYED_ACK_EN;
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), xstorm_flags);
CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), tstorm_flags);
}
static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
{
struct cnic_local *cp = dev->cnic_priv;
struct bnx2x *bp = netdev_priv(dev->netdev);
struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
int hq_bds, pages;
u32 pfid = bp->pfid;
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 = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE;
hq_bds = pages * (CNIC_PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE);
cp->num_cqs = req1->num_cqs;
if (!dev->max_iscsi_conn)
return 0;
/* init Tstorm RAM */
CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
req1->rq_num_wqes);
CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
CNIC_PAGE_SIZE);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
req1->num_tasks_per_conn);
/* init Ustorm RAM */
CNIC_WR16(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid),
req1->rq_buffer_size);
CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
CNIC_PAGE_SIZE);
CNIC_WR8(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
CNIC_WR16(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
req1->num_tasks_per_conn);
CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid),
req1->rq_num_wqes);
CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
req1->cq_num_wqes);
CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
/* init Xstorm RAM */
CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
CNIC_PAGE_SIZE);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
req1->num_tasks_per_conn);
CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
hq_bds);
CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid),
req1->num_tasks_per_conn);
CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid),
cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
/* init Cstorm RAM */
CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid),
CNIC_PAGE_SIZE);
CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid),
req1->num_tasks_per_conn);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid),
req1->cq_num_wqes);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid),
hq_bds);
cnic_bnx2x_set_tcp_options(dev,
req1->flags & ISCSI_KWQE_INIT1_TIME_STAMPS_ENABLE,
req1->flags & ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE);
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 bnx2x *bp = netdev_priv(dev->netdev);
u32 pfid = bp->pfid;
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 +
TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
CNIC_WR(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
req2->error_bit_map[1]);
CNIC_WR16(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]);
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4,
req2->error_bit_map[1]);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn);
kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
done:
kcqe.op_code = ISCSI_KCQE_OPCODE_INIT;
cqes[0] = (struct kcqe *) &kcqe;
cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
return 0;
}
static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) {
struct cnic_iscsi *iscsi = ctx->proto.iscsi;
cnic_free_dma(dev, &iscsi->hq_info);
cnic_free_dma(dev, &iscsi->r2tq_info);
cnic_free_dma(dev, &iscsi->task_array_info);
cnic_free_id(&cp->cid_tbl, ctx->cid);
} else {
cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid);
}
ctx->cid = 0;
}
static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
{
u32 cid;
int ret, pages;
struct cnic_local *cp = dev->cnic_priv;
struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
struct cnic_iscsi *iscsi = ctx->proto.iscsi;
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;
}
cid = cnic_alloc_new_id(&cp->cid_tbl);
if (cid == -1) {
ret = -ENOMEM;
goto error;
}
ctx->cid = cid;
pages = CNIC_PAGE_ALIGN(cp->task_array_size) / CNIC_PAGE_SIZE;
ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
if (ret)
goto error;
pages = CNIC_PAGE_ALIGN(cp->r2tq_size) / CNIC_PAGE_SIZE;
ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
if (ret)
goto error;
pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_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 bnx2x *bp = netdev_priv(dev->netdev);
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;
u32 hw_cid = BNX2X_HW_CID(bp, cid);
struct iscsi_context *ictx;
struct regpair context_addr;
int i, j, n = 2, n_max;
u8 port = BP_PORT(bp);
ctx->ctx_flags = 0;
if (!req2->num_additional_wqes)
return -EINVAL;
n_max = req2->num_additional_wqes + 2;
ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
if (ictx == NULL)
return -ENOMEM;
req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
ictx->xstorm_ag_context.hq_prod = 1;
ictx->xstorm_st_context.iscsi.first_burst_length =
ISCSI_DEF_FIRST_BURST_LEN;
ictx->xstorm_st_context.iscsi.max_send_pdu_length =
ISCSI_DEF_MAX_RECV_SEG_LEN;
ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
req1->sq_page_table_addr_lo;
ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
req1->sq_page_table_addr_hi;
ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
iscsi->hq_info.pgtbl_map & 0xffffffff;
ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
(u64) iscsi->hq_info.pgtbl_map >> 32;
ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
iscsi->hq_info.pgtbl[0];
ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
iscsi->hq_info.pgtbl[1];
ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
iscsi->r2tq_info.pgtbl_map & 0xffffffff;
ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
(u64) iscsi->r2tq_info.pgtbl_map >> 32;
ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
iscsi->r2tq_info.pgtbl[0];
ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
iscsi->r2tq_info.pgtbl[1];
ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
iscsi->task_array_info.pgtbl_map & 0xffffffff;
ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
(u64) iscsi->task_array_info.pgtbl_map >> 32;
ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
BNX2X_ISCSI_PBL_NOT_CACHED;
ictx->xstorm_st_context.iscsi.flags.flags |=
XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
ictx->xstorm_st_context.iscsi.flags.flags |=
XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
ictx->xstorm_st_context.common.ethernet.reserved_vlan_type =
ETH_P_8021Q;
if (BNX2X_CHIP_IS_E2_PLUS(bp) &&
bp->common.chip_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;
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 & CNIC_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;
ictx->tstorm_st_context.tcp.ooo_support_mode =
TCP_TSTORM_OOO_DROP_AND_PROC_ACK;
ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG;
ictx->ustorm_st_context.ring.rq.pbl_base.lo =
req2->rq_page_table_addr_lo;
ictx->ustorm_st_context.ring.rq.pbl_base.hi =
req2->rq_page_table_addr_hi;
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 & CNIC_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;
struct bnx2x *bp = netdev_priv(dev->netdev);
struct cnic_context *ctx;
struct iscsi_kcqe kcqe;
struct kcqe *cqes[1];
u32 l5_cid;
int ret = 0;
if (num < 2) {
*work = num;
return -EINVAL;
}
req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0];
req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1];
if ((num - 2) < req2->num_additional_wqes) {
*work = num;
return -EINVAL;
}
*work = 2 + req2->num_additional_wqes;
l5_cid = req1->iscsi_conn_id;
if (l5_cid >= MAX_ISCSI_TBL_SZ)
return -EINVAL;
memset(&kcqe, 0, sizeof(kcqe));
kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN;
kcqe.iscsi_conn_id = l5_cid;
kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE;
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;
}
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;
kcqe.iscsi_conn_context_id = BNX2X_HW_CID(bp, cp->ctx_tbl[l5_cid].cid);
done:
cqes[0] = (struct kcqe *) &kcqe;
cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
return 0;
}
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;
}
static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid)
{
struct cnic_local *cp = dev->cnic_priv;
struct bnx2x *bp = netdev_priv(dev->netdev);
struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
union l5cm_specific_data l5_data;
int ret;
u32 hw_cid;
init_waitqueue_head(&ctx->waitq);
ctx->wait_cond = 0;
memset(&l5_data, 0, sizeof(l5_data));
hw_cid = BNX2X_HW_CID(bp, ctx->cid);
ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
hw_cid, NONE_CONNECTION_TYPE, &l5_data);
if (ret == 0) {
wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags)))
return -EBUSY;
}
return 0;
}
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;
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;
}
ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid);
skip_cfc_delete:
cnic_free_bnx2x_conn_resc(dev, l5_cid);
if (!ret) {
atomic_dec(&cp->iscsi_conn);
clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
}
destroy_reply:
memset(&kcqe, 0, sizeof(kcqe));
kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
kcqe.iscsi_conn_id = l5_cid;
kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
kcqe.iscsi_conn_context_id = req->context_id;
cqes[0] = (struct kcqe *) &kcqe;
cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
return 0;
}
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 (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 bnx2x *bp = netdev_priv(dev->netdev);
u32 pfid = bp->pfid;
u8 *mac = dev->mac_addr;
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
mac[4]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
mac[2]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1,
mac[0]);
}
static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[],
u32 num, int *work)
{
struct cnic_local *cp = dev->cnic_priv;
struct bnx2x *bp = netdev_priv(dev->netdev);
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) {
netdev_err(dev->netdev, "conn_buf size too big\n");
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 +
XSTORM_ISCSI_LOCAL_VLAN_OFFSET(bp->pfid), csk->vlan_id);
ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT,
kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data);
if (!ret)
set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
return ret;
}
static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
{
struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
union l5cm_specific_data l5_data;
int ret;
memset(&l5_data, 0, sizeof(l5_data));
ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
return ret;
}
static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
{
struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
union l5cm_specific_data l5_data;
int ret;
memset(&l5_data, 0, sizeof(l5_data));
ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
return ret;
}
static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
{
struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
struct l4_kcq kcqe;
struct kcqe *cqes[1];
memset(&kcqe, 0, sizeof(kcqe));
kcqe.pg_host_opaque = req->host_opaque;
kcqe.pg_cid = req->host_opaque;
kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
cqes[0] = (struct kcqe *) &kcqe;
cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
return 0;
}
static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
{
struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
struct l4_kcq kcqe;
struct kcqe *cqes[1];
memset(&kcqe, 0, sizeof(kcqe));
kcqe.pg_host_opaque = req->pg_host_opaque;
kcqe.pg_cid = req->pg_cid;
kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
cqes[0] = (struct kcqe *) &kcqe;
cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
return 0;
}
static int cnic_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;
struct bnx2x *bp = netdev_priv(dev->netdev);
int ret;
u32 cid;
req = (struct fcoe_kwqe_stat *) kwqe;
cid = BNX2X_HW_CID(bp, 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));
ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid,
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;
struct bnx2x *bp = netdev_priv(dev->netdev);
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));
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;
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(bp, cp->fcoe_init_cid);
ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid,
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 bnx2x *bp = netdev_priv(dev->netdev);
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;
if (l5_cid >= dev->max_fcoe_conn)
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(bp, 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(bp, 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;
if (l5_cid >= dev->max_fcoe_conn)
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;
if (l5_cid >= dev->max_fcoe_conn)
return -EINVAL;
l5_cid += BNX2X_FCOE_L5_CID_BASE;
ctx = &cp->ctx_tbl[l5_cid];
init_waitqueue_head(&ctx->waitq);
ctx->wait_cond = 0;
memset(&kcqe, 0, sizeof(kcqe));
kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR;
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) {
wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO);
if (ctx->wait_cond)
kcqe.completion_status = 0;
}
set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags);
queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000));
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;
}
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);
}
}
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;
struct bnx2x *bp = netdev_priv(dev->netdev);
int ret;
u32 cid;
cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
req = (struct fcoe_kwqe_destroy *) kwqe;
cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid);
memset(&l5_data, 0, sizeof(l5_data));
ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid,
FCOE_CONNECTION_TYPE, &l5_data);