UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/drivers/net/ethernet/broadcom/cnic.c

5730 lines
146 KiB
C
Raw Blame History

/* cnic.c: Broadcom CNIC core network driver.
*
* Copyright (c) 2006-2012 Broadcom 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)
* Modified and maintained by: Michael Chan <mchan@broadcom.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 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>
#include <net/ip6_checksum.h>
#include <scsi/iscsi_if.h>
#include "cnic_if.h"
#include "bnx2.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 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);
/* 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;
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;
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);
}
static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_eth_dev *ethdev = cp->ethdev;
struct drv_ctl_info info;
struct drv_ctl_io *io = &info.data.io;
info.cmd = DRV_CTL_IO_WR_CMD;
io->offset = off;
io->data = val;
ethdev->drv_ctl(dev->netdev, &info);
}
static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_eth_dev *ethdev = cp->ethdev;
struct drv_ctl_info info;
struct drv_ctl_io *io = &info.data.io;
info.cmd = DRV_CTL_IO_RD_CMD;
io->offset = off;
ethdev->drv_ctl(dev->netdev, &info);
return io->data;
}
static 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;
struct fcoe_capabilities *fcoe_cap =
&info.data.register_data.fcoe_features;
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;
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;
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(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++;
}
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;
rcu_read_lock();
if (!rcu_dereference(cp->ulp_ops[CNIC_ULP_L4])) {
rc = -ENODEV;
rcu_read_unlock();
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, 6);
if (test_bit(SK_F_IPV6, &csk->flags))
memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
sizeof(struct in6_addr));
else
memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
sizeof(struct in_addr));
if (is_valid_ether_addr(csk->ha)) {
cnic_cm_set_pg(csk);
} 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);
rcu_read_unlock();
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;
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_dereference(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_dereference(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);
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;
}
mutex_lock(&cnic_lock);
if (rcu_dereference(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_ISCSI)
cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
else 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");
cnic_ulp_ctl(dev, ulp_type, false);
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, BCM_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,
BCM_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) + BCM_PAGE_SIZE - 1) &
~(BCM_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 (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 =
dma_alloc_coherent(&dev->pcidev->dev,
BCM_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 * 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)
return -ENOMEM;
udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size);
udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size,
&udev->l2_buf_map,
GFP_KERNEL | __GFP_COMP);
if (!udev->l2_buf) {
__cnic_free_uio_rings(udev);
return -ENOMEM;
}
return 0;
}
static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_uio_dev *udev;
read_lock(&cnic_dev_lock);
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;
read_unlock(&cnic_dev_lock);
return -ENOMEM;
}
cp->udev = udev;
read_unlock(&cnic_dev_lock);
return 0;
}
}
read_unlock(&cnic_dev_lock);
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;
write_lock(&cnic_dev_lock);
list_add(&udev->list, &cnic_udev_list);
write_unlock(&cnic_dev_lock);
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 &
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 &
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;
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 (!BNX2X_CHIP_IS_57710(cp->chip_id))
cp->ctx_align = 0;
else
cp->ctx_align = ctx_blk_size;
cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
for (i = 0; i < blks; i++) {
cp->ctx_arr[i].ctx =
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 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->iro_arr = ethdev->iro_arr;
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(cp->chip_id)) {
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 = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) /
PAGE_SIZE;
ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0);
if (ret)
return -ENOMEM;
n = 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(cp)) {
ret = cnic_alloc_kcq(dev, &cp->kcq2, true);
if (ret)
goto error;
}
pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
if (ret)
goto error;
ret = cnic_alloc_bnx2x_context(dev);
if (ret)
goto error;
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 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(cp, cid)));
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);
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 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;
int hq_bds, pages;
u32 pfid = cp->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 = 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 */
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),
PAGE_SIZE);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
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),
PAGE_SIZE);
CNIC_WR8(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
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),
PAGE_SIZE);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
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),
PAGE_SIZE);
CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT);
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);
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;
u32 pfid = cp->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 = 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;
u32 hw_cid = BNX2X_HW_CID(cp, cid);
struct iscsi_context *ictx;
struct regpair context_addr;
int i, j, n = 2, n_max;
u8 port = CNIC_PORT(cp);
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(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;
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;
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 & 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 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(cp, 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 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(cp, 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 (!(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;
u32 pfid = cp->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 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 +
XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), xstorm_flags);
CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags);
}
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) {
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(cp->pfid), csk->vlan_id);
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)
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;
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));
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;
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(cp, 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 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(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;
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;
int ret;
u32 cid;
cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ);
req = (struct fcoe_kwqe_destroy *) kwqe;
cid = BNX2X_HW_CID(cp, 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);
return ret;
}
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;
u32 kcqe_op;
int ulp_type;
cid = kwqe->kwqe_info0;
memset(&kcqe, 0, sizeof(kcqe));
if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) {
u32 l5_cid = 0;
ulp_type = CNIC_ULP_FCOE;
if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) {
struct fcoe_kwqe_conn_enable_disable *req;
req = (struct fcoe_kwqe_conn_enable_disable *) kwqe;
kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN;
cid = req->context_id;
l5_cid = req->conn_id;
} else if (opcode == FCOE_KWQE_OPCODE_DESTROY) {
kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC;
} else {
return;
}
kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT;
kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE;
kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR;
kcqe.kcqe_info2 = cid;
kcqe.kcqe_info0 = l5_cid;
} else 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_PARITY_ERR;
kcqe.kcqe_info2 = cid;
cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0);
} else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) {
struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe;
ulp_type = CNIC_ULP_L4;
if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1)
kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE;
else if (opcode == L4_KWQE_OPCODE_VALUE_RESET)
kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP;
else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE)
kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
else
return;
kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) |
KCQE_FLAGS_LAYER_MASK_L4;
l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR;
l4kcqe->cid = cid;
cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id);
} else {
return;
}
cqes[0] = &kcqe;
cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1);
}
static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev,
struct kwqe *wqes[], u32 num_wqes)
{
int i, work, ret;
u32 opcode;
struct kwqe *kwqe;
if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
return -EAGAIN; /* bnx2 is down */
for (i = 0; i < num_wqes; ) {
kwqe = wqes[i];
opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
work = 1;
switch (opcode) {
case ISCSI_KWQE_OPCODE_INIT1:
ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
break;
case ISCSI_KWQE_OPCODE_INIT2:
ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
break;
case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
num_wqes - i, &work);
break;
case ISCSI_KWQE_OPCODE_UPDATE_CONN:
ret = cnic_bnx2x_iscsi_update(dev, kwqe);
break;
case ISCSI_KWQE_OPCODE_DESTROY_CONN:
ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
break;
case L4_KWQE_OPCODE_VALUE_CONNECT1:
ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
&work);
break;
case L4_KWQE_OPCODE_VALUE_CLOSE:
ret = cnic_bnx2x_close(dev, kwqe);
break;
case L4_KWQE_OPCODE_VALUE_RESET:
ret = cnic_bnx2x_reset(dev, kwqe);
break;
case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
ret = cnic_bnx2x_offload_pg(dev, kwqe);
break;
case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
ret = cnic_bnx2x_update_pg(dev, kwqe);
break;
case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
ret = 0;
break;
default:
ret = 0;
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);
/* 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);
}
i += work;
}
return 0;
}
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 */
if (!BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
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);
/* 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);
}
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;
}
static void service_kcqes(struct cnic_dev *dev, int num_cqes)
{
struct cnic_local *cp = dev->cnic_priv;
int i, j, comp = 0;
i = 0;
j = 1;
while (num_cqes) {
struct cnic_ulp_ops *ulp_ops;
int ulp_type;
u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag);
if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
comp++;
while (j < num_cqes) {
u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer)
break;
if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
comp++;
j++;
}
if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
ulp_type = CNIC_ULP_RDMA;
else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
ulp_type = CNIC_ULP_ISCSI;
else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE)
ulp_type = CNIC_ULP_FCOE;
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 {
netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n",
kcqe_op_flag);
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;
}
if (unlikely(comp))
cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
}
static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
{
struct cnic_local *cp = dev->cnic_priv;
u16 i, ri, hw_prod, last;
struct kcqe *kcqe;
int kcqe_cnt = 0, last_cnt = 0;
i = ri = last = info->sw_prod_idx;
ri &= MAX_KCQ_IDX;
hw_prod = *info->hw_prod_idx_ptr;
hw_prod = info->hw_idx(hw_prod);
while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
cp->completed_kcq[kcqe_cnt++] = kcqe;
i = info->next_idx(i);
ri = i & MAX_KCQ_IDX;
if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
last_cnt = kcqe_cnt;
last = i;
}
}
info->sw_prod_idx = last;
return last_cnt;
}
static int cnic_l2_completion(struct cnic_local *cp)
{
u16 hw_cons, sw_cons;
struct cnic_uio_dev *udev = cp->udev;
union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
(udev->l2_ring + (2 * BCM_PAGE_SIZE));
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;
}
static void cnic_chk_pkt_rings(struct cnic_local *cp)
{
u16 rx_cons, tx_cons;
int comp = 0;
if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
return;
rx_cons = *cp->rx_cons_ptr;
tx_cons = *cp->tx_cons_ptr;
if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
comp = cnic_l2_completion(cp);
cp->tx_cons = tx_cons;
cp->rx_cons = rx_cons;
if (cp->udev)
uio_event_notify(&cp->udev->cnic_uinfo);
}
if (comp)
clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
}
static u32 cnic_service_bnx2_queues(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
u32 status_idx = (u16) *cp->kcq1.status_idx_ptr;
int kcqe_cnt;
/* status block index must be read before reading other fields */
rmb();
cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
service_kcqes(dev, kcqe_cnt);
/* Tell compiler that status_blk fields can change. */
barrier();
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;
}
CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
cnic_chk_pkt_rings(cp);
return status_idx;
}
static int cnic_service_bnx2(void *data, void *status_blk)
{
struct cnic_dev *dev = data;
if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
struct status_block *sblk = status_blk;
return sblk->status_idx;
}
return cnic_service_bnx2_queues(dev);
}
static void cnic_service_bnx2_msix(unsigned long data)
{
struct cnic_dev *dev = (struct cnic_dev *) data;
struct cnic_local *cp = dev->cnic_priv;
cp->last_status_idx = cnic_service_bnx2_queues(dev);
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_doirq(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX;
prefetch(cp->status_blk.gen);
prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
tasklet_schedule(&cp->cnic_irq_task);
}
}
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);
cnic_doirq(dev);
return IRQ_HANDLED;
}
static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm,
u16 index, u8 op, u8 update)
{
struct cnic_local *cp = dev->cnic_priv;
u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 +
COMMAND_REG_INT_ACK);
struct igu_ack_register igu_ack;
igu_ack.status_block_index = index;
igu_ack.sb_id_and_flags =
((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) |
(storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) |
(update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) |
(op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT));
CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack));
}
static void cnic_ack_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);
}
static void cnic_ack_bnx2x_msix(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0,
IGU_INT_DISABLE, 0);
}
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);
}
static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx)
{
struct cnic_local *cp = dev->cnic_priv;
cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx,
IGU_INT_ENABLE, 1);
}
static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx)
{
struct cnic_local *cp = dev->cnic_priv;
cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx,
IGU_INT_ENABLE, 1);
}
static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info)
{
u32 last_status = *info->status_idx_ptr;
int kcqe_cnt;
/* status block index must be read before reading the KCQ */
rmb();
while ((kcqe_cnt = cnic_get_kcqes(dev, info))) {
service_kcqes(dev, kcqe_cnt);
/* Tell compiler that sblk fields can change. */
barrier();
last_status = *info->status_idx_ptr;
/* status block index must be read before reading the KCQ */
rmb();
}
return last_status;
}
static void cnic_service_bnx2x_bh(unsigned long data)
{
struct cnic_dev *dev = (struct cnic_dev *) data;
struct cnic_local *cp = dev->cnic_priv;
u32 status_idx, new_status_idx;
if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
return;
while (1) {
status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1);
CNIC_WR16(dev, cp->kcq1.io_addr,
cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_FCOE) {
cp->arm_int(dev, status_idx);
break;
}
new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2);
if (new_status_idx != status_idx)
continue;
CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx +
MAX_KCQ_IDX);
cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF,
status_idx, IGU_INT_ENABLE, 1);
break;
}
}
static int cnic_service_bnx2x(void *data, void *status_blk)
{
struct cnic_dev *dev = data;
struct cnic_local *cp = dev->cnic_priv;
if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX))
cnic_doirq(dev);
cnic_chk_pkt_rings(cp);
return 0;
}
static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
{
struct cnic_ulp_ops *ulp_ops;
if (if_type == CNIC_ULP_ISCSI)
cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
mutex_lock(&cnic_lock);
ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
lockdep_is_held(&cnic_lock));
if (!ulp_ops) {
mutex_unlock(&cnic_lock);
return;
}
set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
mutex_unlock(&cnic_lock);
if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
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);
}
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;
mutex_lock(&cnic_lock);
ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
lockdep_is_held(&cnic_lock));
if (!ulp_ops || !ulp_ops->cnic_start) {
mutex_unlock(&cnic_lock);
continue;
}
set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
mutex_unlock(&cnic_lock);
if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
ulp_ops->cnic_start(cp->ulp_handle[if_type]);
clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
}
}
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;
}
static int cnic_ctl(void *data, struct cnic_ctl_info *info)
{
struct cnic_dev *dev = data;
int ulp_type = CNIC_ULP_ISCSI;
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;
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;
}
case CNIC_CTL_COMPLETION_CMD: {
struct cnic_ctl_completion *comp = &info->data.comp;
u32 cid = BNX2X_SW_CID(comp->cid);
u32 l5_cid;
struct cnic_local *cp = dev->cnic_priv;
if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
break;
if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
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);
}
ctx->wait_cond = 1;
wake_up(&ctx->waitq);
}
break;
}
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;
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;
mutex_lock(&cnic_lock);
ulp_ops = cnic_ulp_tbl_prot(i);
if (!ulp_ops || !ulp_ops->cnic_init) {
mutex_unlock(&cnic_lock);
continue;
}
ulp_get(ulp_ops);
mutex_unlock(&cnic_lock);
if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
ulp_ops->cnic_init(dev);
ulp_put(ulp_ops);
}
}
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;
mutex_lock(&cnic_lock);
ulp_ops = cnic_ulp_tbl_prot(i);
if (!ulp_ops || !ulp_ops->cnic_exit) {
mutex_unlock(&cnic_lock);
continue;
}
ulp_get(ulp_ops);
mutex_unlock(&cnic_lock);
if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
ulp_ops->cnic_exit(dev);
ulp_put(ulp_ops);
}
}
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;
l4kwqe->ipid_start = DEF_IPID_START;
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;
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;
}
csk1 = &cp->csk_tbl[l5_cid];
if (atomic_read(&csk1->ref_count))
return -EAGAIN;
if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
return -EBUSY;
csk1->dev = dev;
csk1->cid = cid;
csk1->l5_cid = l5_cid;
csk1->ulp_type = ulp_type;
csk1->context = context;
csk1->ka_timeout = DEF_KA_TIMEOUT;
csk1->ka_interval = DEF_KA_INTERVAL;
csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
csk1->tos = DEF_TOS;
csk1->ttl = DEF_TTL;
csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
csk1->rcv_buf = DEF_RCV_BUF;
csk1->snd_buf = DEF_SND_BUF;
csk1->seed = DEF_SEED;
*csk = csk1;
return 0;
}
static void cnic_cm_cleanup(struct cnic_sock *csk)
{
if (csk->src_port) {
struct cnic_dev *dev = csk->dev;
struct cnic_local *cp = dev->cnic_priv;
cnic_free_id(&cp->csk_port_tbl, be16_to_cpu(csk->src_port));
csk->src_port = 0;
}
}
static void cnic_close_conn(struct cnic_sock *csk)
{
if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
cnic_cm_upload_pg(csk);
clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
}
cnic_cm_cleanup(csk);
}
static int cnic_cm_destroy(struct cnic_sock *csk)
{
if (!cnic_in_use(csk))
return -EINVAL;
csk_hold(csk);
clear_bit(SK_F_INUSE, &csk->flags);
smp_mb__after_clear_bit();
while (atomic_read(&csk->ref_count) != 1)
msleep(1);
cnic_cm_cleanup(csk);
csk->flags = 0;
csk_put(csk);
return 0;
}
static inline u16 cnic_get_vlan(struct net_device *dev,
struct net_device **vlan_dev)
{
if (dev->priv_flags & IFF_802_1Q_VLAN) {
*vlan_dev = vlan_dev_real_dev(dev);
return vlan_dev_vlan_id(dev);
}
*vlan_dev = dev;
return 0;
}
static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
struct dst_entry **dst)
{
#if defined(CONFIG_INET)
struct rtable *rt;
rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0);
if (!IS_ERR(rt)) {
*dst = &rt->dst;
return 0;
}
return PTR_ERR(rt);
#else
return -ENETUNREACH;
#endif
}
static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr,
struct dst_entry **dst)
{
#if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE))
struct flowi6 fl6;
memset(&fl6, 0, sizeof(fl6));
fl6.daddr = dst_addr->sin6_addr;
if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
fl6.flowi6_oif = dst_addr->sin6_scope_id;
*dst = ip6_route_output(&init_net, NULL, &fl6);
if ((*dst)->error) {
dst_release(*dst);
*dst = NULL;
return -ENETUNREACH;
} else
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;
int is_v6, rc = 0;
struct dst_entry *dst = NULL;
struct net_device *realdev;
__be16 local_port;
u32 port_id;
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);
cnic_get_v6_route(&saddr->remote.v6, &dst);
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 {
cnic_get_v4_route(&saddr->remote.v4, &dst);
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;
}
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);
}
}
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;
} else
port_id = 0;
if (!port_id) {
port_id = cnic_alloc_new_id(&cp->csk_port_tbl);
if (port_id == -1) {
rc = -ENOMEM;
goto err_out;
}
local_port = cpu_to_be16(port_id);
}
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)
{
struct cnic_local *cp = csk->dev->cnic_priv;
int err = 0;
if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
return -EOPNOTSUPP;
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;
u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP;
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);
if (csk->state != opcode)
return -EALREADY;
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);
} else {
return -EALREADY;
}
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;
}
/* 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;
}
csk->pg_cid = kcqe->pg_cid;
set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
cnic_cm_conn_req(csk);
done:
csk_put(csk);
}
static void cnic_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);
}
static void cnic_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
{
struct cnic_local *cp = dev->cnic_priv;
struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
u8 opcode = l4kcqe->op_code;
u32 l5_cid;
struct cnic_sock *csk;
if (opcode == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) {
cnic_process_fcoe_term_conn(dev, kcqe);
return;
}
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) {
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;
case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE:
if (l4kcqe->status == 0)
set_bit(SK_F_OFFLD_COMPLETE, &csk->flags);
else if (l4kcqe->status ==
L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
set_bit(SK_F_HW_ERR, &csk->flags);
smp_mb__before_clear_bit();
clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
cnic_cm_upcall(cp, csk, opcode);
break;
case L5CM_RAMROD_CMD_ID_CLOSE:
if (l4kcqe->status != 0) {
netdev_warn(dev->netdev, "RAMROD CLOSE compl with "
"status 0x%x\n", l4kcqe->status);
opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP;
/* Fall through */
} else {
break;
}
case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
case L4_KCQE_OPCODE_VALUE_CLOSE_COMP:
case L4_KCQE_OPCODE_VALUE_RESET_COMP:
case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE:
case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD:
if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR)
set_bit(SK_F_HW_ERR, &csk->flags);
cp->close_conn(csk, opcode);
break;
case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
/* 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);
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;
u32 port_id;
cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
GFP_KERNEL);
if (!cp->csk_tbl)
return -ENOMEM;
port_id = random32();
port_id %= CNIC_LOCAL_PORT_RANGE;
if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
CNIC_LOCAL_PORT_MIN, port_id)) {
cnic_cm_free_mem(dev);
return -ENOMEM;
}
return 0;
}
static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
{
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;
}
/* 1. If event opcode matches the expected event in csk->state
* 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any
* event
* 3. If the expected event is 0, meaning the connection was never
* never established, we accept the opcode from cm_abort.
*/
if (opcode == csk->state || csk->state == 0 ||
csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP ||
csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
if (csk->state == 0)
csk->state = opcode;
return 1;
}
}
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;
if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) {
cnic_cm_upcall(cp, csk, opcode);
return;
}
clear_bit(SK_F_CONNECT_START, &csk->flags);
cnic_close_conn(csk);
csk->state = opcode;
cnic_cm_upcall(cp, csk, opcode);
}
static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev)
{
}
static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
{
u32 seed;
seed = random32();
cnic_ctx_wr(dev, 45, 0, seed);
return 0;
}
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:
if (cnic_ready_to_close(csk, opcode)) {
if (test_bit(SK_F_HW_ERR, &csk->flags))
close_complete = 1;
else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
else
close_complete = 1;
}
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)
{
struct cnic_local *cp = dev->cnic_priv;
if (!cp->ctx_tbl)
return;
if (!netif_running(dev->netdev))
return;
cnic_bnx2x_delete_wait(dev, 0);
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));
}
static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
u32 pfid = cp->pfid;
u32 port = CNIC_PORT(cp);
cnic_init_bnx2x_mac(dev);
cnic_bnx2x_set_tcp_timestamp(dev, 1);
CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0);
CNIC_WR(dev, BAR_XSTRORM_INTMEM +
XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1);
CNIC_WR(dev, BAR_XSTRORM_INTMEM +
XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port),
DEF_MAX_DA_COUNT);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2);
CNIC_WR(dev, BAR_XSTRORM_INTMEM +
XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER);
CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid),
DEF_MAX_CWND);
return 0;
}
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;
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);
}
for (i = 0; i < cp->max_cid_space; i++) {
struct cnic_context *ctx = &cp->ctx_tbl[i];
int err;
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;
err = cnic_bnx2x_destroy_ramrod(dev, i);
cnic_free_bnx2x_conn_resc(dev, i);
if (!err) {
if (ctx->ulp_proto_id == CNIC_ULP_ISCSI)
atomic_dec(&cp->iscsi_conn);
clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags);
}
}
if (need_resched)
queue_delayed_work(cnic_wq, &cp->delete_task,
msecs_to_jiffies(10));
}
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;
INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task);
dev->cm_create = cnic_cm_create;
dev->cm_destroy = cnic_cm_destroy;
dev->cm_connect = cnic_cm_connect;
dev->cm_abort = cnic_cm_abort;
dev->cm_close = cnic_cm_close;
dev->cm_select_dev = cnic_cm_select_dev;
cp->ulp_handle[CNIC_ULP_L4] = dev;
rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
return 0;
err_out:
cnic_cm_free_mem(dev);
return err;
}
static int cnic_cm_shutdown(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
int i;
if (!cp->csk_tbl)
return 0;
for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
struct cnic_sock *csk = &cp->csk_tbl[i];
clear_bit(SK_F_INUSE, &csk->flags);
cnic_cm_cleanup(csk);
}
cnic_cm_free_mem(dev);
return 0;
}
static void cnic_init_context(struct cnic_dev *dev, u32 cid)
{
u32 cid_addr;
int i;
cid_addr = GET_CID_ADDR(cid);
for (i = 0; i < CTX_SIZE; i += 4)
cnic_ctx_wr(dev, cid_addr, i, 0);
}
static int cnic_setup_5709_context(struct cnic_dev *dev, int valid)
{
struct cnic_local *cp = dev->cnic_priv;
int ret = 0, i;
u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0;
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);
tasklet_kill(&cp->cnic_irq_task);
free_irq(ethdev->irq_arr[0].vector, dev);
}
}
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;
}
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);
cp->last_status_idx = cp->status_blk.bnx2->status_idx;
tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix,
(unsigned long) dev);
err = cnic_request_irq(dev);
if (err)
return err;
while (cp->status_blk.bnx2->status_completion_producer_index &&
i < 10) {
CNIC_WR(dev, BNX2_HC_COALESCE_NOW,
1 << (11 + sblk_num));
udelay(10);
i++;
barrier();
}
if (cp->status_blk.bnx2->status_completion_producer_index) {
cnic_free_irq(dev);
goto failed;
}
} else {
struct status_block *sblk = cp->status_blk.gen;
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:
netdev_err(dev->netdev, "KCQ index not resetting to 0\n");
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;
struct cnic_uio_dev *udev = cp->udev;
u32 cid_addr, tx_cid, sb_id;
u32 val, offset0, offset1, offset2, offset3;
int i;
struct tx_bd *txbd;
dma_addr_t buf_map, ring_map = udev->l2_ring_map;
struct status_block *s_blk = cp->status_blk.gen;
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) {
struct status_block_msix *sblk = cp->status_blk.bnx2;
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 {
cnic_init_context(dev, tx_cid);
cnic_init_context(dev, tx_cid + 1);
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);
txbd = udev->l2_ring;
buf_map = udev->l2_buf_map;
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;
}
val = (u64) ring_map >> 32;
cnic_ctx_wr(dev, cid_addr, offset2, val);
txbd->tx_bd_haddr_hi = val;
val = (u64) ring_map & 0xffffffff;
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;
struct cnic_uio_dev *udev = cp->udev;
u32 cid_addr, sb_id, val, coal_reg, coal_val;
int i;
struct rx_bd *rxbd;
struct status_block *s_blk = cp->status_blk.gen;
dma_addr_t ring_map = udev->l2_ring_map;
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) {
struct status_block_msix *sblk = cp->status_blk.bnx2;
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)
val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT;
else
val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id);
cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val);
rxbd = udev->l2_ring + BCM_PAGE_SIZE;
for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) {
dma_addr_t buf_map;
int n = (i % cp->l2_rx_ring_size) + 1;
buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
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;
}
val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val);
rxbd->rx_bd_haddr_hi = val;
val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val);
rxbd->rx_bd_haddr_lo = val;
val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD);
cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2));
}
static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev)
{
struct kwqe *wqes[1], l2kwqe;
memset(&l2kwqe, 0, sizeof(l2kwqe));
wqes[0] = &l2kwqe;
l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_LAYER_SHIFT) |
(L2_KWQE_OPCODE_VALUE_FLUSH <<
KWQE_OPCODE_SHIFT) | 2;
dev->submit_kwqes(dev, wqes, 1);
}
static void cnic_set_bnx2_mac(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
u32 val;
val = cp->func << 2;
cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
val = cnic_reg_rd_ind(dev, cp->shmem_base +
BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
dev->mac_addr[0] = (u8) (val >> 8);
dev->mac_addr[1] = (u8) val;
CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
val = cnic_reg_rd_ind(dev, cp->shmem_base +
BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
dev->mac_addr[2] = (u8) (val >> 24);
dev->mac_addr[3] = (u8) (val >> 16);
dev->mac_addr[4] = (u8) (val >> 8);
dev->mac_addr[5] = (u8) val;
CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
if (CHIP_NUM(cp) != CHIP_NUM_5709)
val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
}
static int cnic_start_bnx2_hw(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_eth_dev *ethdev = cp->ethdev;
struct status_block *sblk = cp->status_blk.gen;
u32 val, kcq_cid_addr, kwq_cid_addr;
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);
kwq_cid_addr = GET_CID_ADDR(KWQ_CID);
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;
set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags);
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;
cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val);
val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT;
cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
val = (u32) cp->kwq_info.pgtbl_map;
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;
cp->kcq1.sw_prod_idx = 0;
cp->kcq1.hw_prod_idx_ptr =
&sblk->status_completion_producer_index;
cp->kcq1.status_idx_ptr = &sblk->status_idx;
/* Initialize the kernel complete queue context. */
val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE |
(BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ;
cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val);
val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val);
val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT;
cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32);
cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
val = (u32) cp->kcq1.dma.pgtbl_map;
cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
cp->int_num = 0;
if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
struct status_block_msix *msblk = cp->status_blk.bnx2;
u32 sb_id = cp->status_blk_num;
u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
cp->kcq1.hw_prod_idx_ptr =
&msblk->status_completion_producer_index;
cp->kcq1.status_idx_ptr = &msblk->status_idx;
cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index;
cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
}
/* 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) {
netdev_err(dev->netdev, "cnic_init_irq failed\n");
cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0);
cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0);
return err;
}
return 0;
}
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;
tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh,
(unsigned long) dev);
if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
err = cnic_request_irq(dev);
return err;
}
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);
}
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 +
CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) +
offsetof(struct hc_status_block_data_e1x, index_data) +
sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS +
offsetof(struct hc_index_data, timeout), 64 / 4);
cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0);
}
static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev)
{
}
static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev,
struct client_init_ramrod_data *data)
{
struct cnic_local *cp = dev->cnic_priv;
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;
struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
int i;
u32 cli = cp->ethdev->iscsi_l2_client_id;
u32 val;
memset(txbd, 0, BCM_PAGE_SIZE);
buf_map = udev->l2_buf_map;
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_parse_bd_e1x *pbd_e1x =
&((txbd + 1)->parse_bd_e1x);
struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2);
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 &= ~ETH_TX_START_BD_PARSE_NBDS;
start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id))
pbd_e2->parsing_data = (UNICAST_ADDRESS <<
ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT);
else
pbd_e1x->global_data = (UNICAST_ADDRESS <<
ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT);
}
val = (u64) ring_map >> 32;
txbd->next_bd.addr_hi = cpu_to_le32(val);
data->tx.tx_bd_page_base.hi = cpu_to_le32(val);
val = (u64) ring_map & 0xffffffff;
txbd->next_bd.addr_lo = cpu_to_le32(val);
data->tx.tx_bd_page_base.lo = cpu_to_le32(val);
/* 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;
/* reset xstorm per client statistics */
if (cli < MAX_STAT_COUNTER_ID) {
data->general.statistics_zero_flg = 1;
data->general.statistics_en_flg = 1;
data->general.statistics_counter_id = cli;
}
cp->tx_cons_ptr =
&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS];
}
static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev,
struct client_init_ramrod_data *data)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_uio_dev *udev = cp->udev;
struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring +
BCM_PAGE_SIZE);
struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
(udev->l2_ring + (2 * BCM_PAGE_SIZE));
struct host_sp_status_block *sb = cp->bnx2x_def_status_blk;
int i;
u32 cli = cp->ethdev->iscsi_l2_client_id;
int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
u32 val;
dma_addr_t ring_map = udev->l2_ring_map;
/* General data */
data->general.client_id = cli;
data->general.activate_flg = 1;
data->general.sp_client_id = cli;
data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14);
data->general.func_id = cp->pfid;
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;
buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size);
rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
}
val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32;
rxbd->addr_hi = cpu_to_le32(val);
data->rx.bd_page_base.hi = cpu_to_le32(val);
val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff;
rxbd->addr_lo = cpu_to_le32(val);
data->rx.bd_page_base.lo = cpu_to_le32(val);
rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
rxcqe->addr_hi = cpu_to_le32(val);
data->rx.cqe_page_base.hi = cpu_to_le32(val);
val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
rxcqe->addr_lo = cpu_to_le32(val);
data->rx.cqe_page_base.lo = cpu_to_le32(val);
/* 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;
data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT;
data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size);
data->rx.outer_vlan_removal_enable_flg = 1;
data->rx.silent_vlan_removal_flg = 1;
data->rx.silent_vlan_value = 0;
data->rx.silent_vlan_mask = 0xffff;
cp->rx_cons_ptr =
&sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS];
cp->rx_cons = *cp->rx_cons_ptr;
}
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;
if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
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];
}
if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
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];
}
}
static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_eth_dev *ethdev = cp->ethdev;
int func = CNIC_FUNC(cp), ret;
u32 pfid;
dev->stats_addr = ethdev->addr_drv_info_to_mcp;
cp->port_mode = CHIP_PORT_MODE_NONE;
if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
u32 val;
pci_read_config_dword(dev->pcidev, PCICFG_ME_REGISTER, &val);
cp->func = (u8) ((val & ME_REG_ABS_PF_NUM) >>
ME_REG_ABS_PF_NUM_SHIFT);
func = CNIC_FUNC(cp);
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;
if (val) {
cp->port_mode = CHIP_4_PORT_MODE;
cp->pfid = func >> 1;
} else {
cp->port_mode = CHIP_2_PORT_MODE;
cp->pfid = func & 0x6;
}
} else {
cp->pfid = func;
}
pfid = cp->pfid;
ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
cp->iscsi_start_cid, 0);
if (ret)
return -ENOMEM;
if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn,
cp->fcoe_start_cid, 0);
if (ret)
return -ENOMEM;
}
cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2;
cnic_init_bnx2x_kcq(dev);
/* Only 1 EQ */
CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX);
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0);
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0),
cp->kcq1.dma.pg_map_arr[1] & 0xffffffff);
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4,
(u64) cp->kcq1.dma.pg_map_arr[1] >> 32);
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0),
cp->kcq1.dma.pg_map_arr[0] & 0xffffffff);
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4,
(u64) cp->kcq1.dma.pg_map_arr[0] >> 32);
CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num);
CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0),
HC_INDEX_ISCSI_EQ_CONS);
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid),
cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4,
(u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
CNIC_WR(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF);
cnic_setup_bnx2x_context(dev);
ret = cnic_init_bnx2x_irq(dev);
if (ret)
return ret;
return 0;
}
static void cnic_init_rings(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_uio_dev *udev = cp->udev;
if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
return;
if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
cnic_init_bnx2_tx_ring(dev);
cnic_init_bnx2_rx_ring(dev);
set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
u32 cli = cp->ethdev->iscsi_l2_client_id;
u32 cid = cp->ethdev->iscsi_l2_cid;
u32 cl_qzone_id;
struct client_init_ramrod_data *data;
union l5cm_specific_data l5_data;
struct ustorm_eth_rx_producers rx_prods = {0};
u32 off, i, *cid_ptr;
rx_prods.bd_prod = 0;
rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
barrier();
cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli);
off = BAR_USTRORM_INTMEM +
(BNX2X_CHIP_IS_E2_PLUS(cp->chip_id) ?
USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) :
USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli));
for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++)
CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]);
set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
data = udev->l2_buf;
cid_ptr = udev->l2_buf + 12;
memset(data, 0, sizeof(*data));
cnic_init_bnx2x_tx_ring(dev, data);
cnic_init_bnx2x_rx_ring(dev, data);
l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff;
l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32;
set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
cid, ETH_CONNECTION_TYPE, &l5_data);
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");
cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
cnic_ring_ctl(dev, cid, cli, 1);
*cid_ptr = cid;
}
}
static void cnic_shutdown_rings(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_uio_dev *udev = cp->udev;
void *rx_ring;
if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
return;
if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
cnic_shutdown_bnx2_rx_ring(dev);
} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
u32 cli = cp->ethdev->iscsi_l2_client_id;
u32 cid = cp->ethdev->iscsi_l2_cid;
union l5cm_specific_data l5_data;
int i;
cnic_ring_ctl(dev, cid, cli, 0);
set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
l5_data.phy_address.lo = cli;
l5_data.phy_address.hi = 0;
cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT,
cid, ETH_CONNECTION_TYPE, &l5_data);
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");
cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1);
memset(&l5_data, 0, sizeof(l5_data));
cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL,
cid, NONE_CONNECTION_TYPE, &l5_data);
msleep(10);
}
clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
rx_ring = udev->l2_ring + BCM_PAGE_SIZE;
memset(rx_ring, 0, BCM_PAGE_SIZE);
}
static int cnic_register_netdev(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_eth_dev *ethdev = cp->ethdev;
int err;
if (!ethdev)
return -ENODEV;
if (ethdev->drv_state & CNIC_DRV_STATE_REGD)
return 0;
err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev);
if (err)
netdev_err(dev->netdev, "register_cnic failed\n");
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;
dev->regview = ethdev->io_base;
pci_dev_get(dev->pcidev);
cp->func = PCI_FUNC(dev->pcidev->devfn);
cp->status_blk.gen = ethdev->irq_arr[0].status_blk;
cp->status_blk_num = ethdev->irq_arr[0].status_blk_num;
err = cp->alloc_resc(dev);
if (err) {
netdev_err(dev->netdev, "allocate resource failure\n");
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);
}
static void cnic_stop_bnx2x_hw(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
cnic_free_irq(dev);
*cp->kcq1.hw_prod_idx_ptr = 0;
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0);
CNIC_WR16(dev, cp->kcq1.io_addr, 0);
cnic_free_resc(dev);
}
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;
int i = 0;
/* Need to wait for the ring shutdown event to complete
* before clearing the CNIC_UP flag.
*/
while (cp->udev && cp->udev->uio_dev != -1 && i < 15) {
msleep(100);
i++;
}
cnic_shutdown_rings(dev);
cp->stop_cm(dev);
clear_bit(CNIC_F_CNIC_UP, &dev->flags);
RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
synchronize_rcu();
cnic_cm_shutdown(dev);
cp->stop_hw(dev);
pci_dev_put(dev->pcidev);
}
}
static void cnic_free_dev(struct cnic_dev *dev)
{
int i = 0;
while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
msleep(100);
i++;
}
if (atomic_read(&dev->ref_count) != 0)
netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n");
netdev_info(dev->netdev, "Removed CNIC device\n");
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) {
netdev_err(dev, "allocate dev struct failure\n");
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);
netdev_info(dev, "Added CNIC device\n");
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;
struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
probe = symbol_get(bnx2_cnic_probe);
if (probe) {
ethdev = (*probe)(dev);
symbol_put(bnx2_cnic_probe);
}
if (!ethdev)
return NULL;
pdev = ethdev->pdev;
if (!pdev)
return NULL;
dev_hold(dev);
pci_dev_get(pdev);
if ((pdev->device == PCI_DEVICE_ID_NX2_5709 ||
pdev->device == PCI_DEVICE_ID_NX2_5709S) &&
(pdev->revision < 0x10)) {
pci_dev_put(pdev);
goto cnic_err;
}
pci_dev_put(pdev);
cdev = cnic_alloc_dev(dev, pdev);
if (cdev == NULL)
goto cnic_err;
set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
cp = cdev->cnic_priv;
cp->ethdev = ethdev;
cdev->pcidev = pdev;
cp->chip_id = ethdev->chip_id;
cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
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;
}
static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
{
struct pci_dev *pdev;
struct cnic_dev *cdev;
struct cnic_local *cp;
struct cnic_eth_dev *ethdev = NULL;
struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
probe = symbol_get(bnx2x_cnic_probe);
if (probe) {
ethdev = (*probe)(dev);
symbol_put(bnx2x_cnic_probe);
}
if (!ethdev)
return NULL;
pdev = ethdev->pdev;
if (!pdev)
return NULL;
dev_hold(dev);
cdev = cnic_alloc_dev(dev, pdev);
if (cdev == NULL) {
dev_put(dev);
return NULL;
}
set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
cp = cdev->cnic_priv;
cp->ethdev = ethdev;
cdev->pcidev = pdev;
cp->chip_id = ethdev->chip_id;
cdev->stats_addr = ethdev->addr_drv_info_to_mcp;
if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI))
cdev->max_iscsi_conn = ethdev->max_iscsi_conn;
if (CNIC_SUPPORTS_FCOE(cp))
cdev->max_fcoe_conn = ethdev->max_fcoe_conn;
if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS)
cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS;
memcpy(cdev->mac_addr, ethdev->iscsi_mac, 6);
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;
if (BNX2X_CHIP_IS_E2_PLUS(cp->chip_id)) {
cp->ack_int = cnic_ack_bnx2x_e2_msix;
cp->arm_int = cnic_arm_bnx2x_e2_msix;
} else {
cp->ack_int = cnic_ack_bnx2x_msix;
cp->arm_int = cnic_arm_bnx2x_msix;
}
cp->close_conn = cnic_close_bnx2x_conn;
return cdev;
}
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);
if (!strcmp(drvinfo.driver, "bnx2x"))
cdev = init_bnx2x_cnic(dev);
if (cdev) {
write_lock(&cnic_dev_lock);
list_add(&cdev->list, &cnic_dev_list);
write_unlock(&cnic_dev_lock);
}
}
return cdev;
}
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();
}
/* 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);
if (!dev && (event == NETDEV_REGISTER || netif_running(netdev))) {
/* 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);
if (event == NETDEV_UP || (new_dev && netif_running(netdev))) {
if (cnic_register_netdev(dev) != 0) {
cnic_put(dev);
goto done;
}
if (!cnic_start_hw(dev))
cnic_ulp_start(dev);
}
cnic_rcv_netevent(cp, event, 0);
if (event == NETDEV_GOING_DOWN) {
cnic_ulp_stop(dev);
cnic_stop_hw(dev);
cnic_unregister_netdev(dev);
} 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);
} 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);
}
}
}
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;
struct cnic_uio_dev *udev;
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);
cnic_unregister_netdev(dev);
list_del_init(&dev->list);
cnic_free_dev(dev);
}
while (!list_empty(&cnic_udev_list)) {
udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev,
list);
cnic_free_uio(udev);
}
}
static int __init cnic_init(void)
{
int rc = 0;
pr_info("%s", version);
rc = register_netdevice_notifier(&cnic_netdev_notifier);
if (rc) {
cnic_release();
return rc;
}
cnic_wq = create_singlethread_workqueue("cnic_wq");
if (!cnic_wq) {
cnic_release();
unregister_netdevice_notifier(&cnic_netdev_notifier);
return -ENOMEM;
}
return 0;
}
static void __exit cnic_exit(void)
{
unregister_netdevice_notifier(&cnic_netdev_notifier);
cnic_release();
destroy_workqueue(cnic_wq);
}
module_init(cnic_init);
module_exit(cnic_exit);
Reference in New Issue View Git Blame Copy Permalink