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linux/drivers/net/cnic.c
Michael Chan 48f753d2ba cnic: Return SPQ credit to bnx2x after ring setup and shutdown. 
Everytime the iSCSI ring finishes setup or shutdown, we need to return
the SPQ (slow path queue) credit to the bnx2x driver.  Without this step,
the SPQ will eventually be full causing iSCSI to fail.  This can happen
after 3 or 4 MTU changes for example.

Add code to wait for these slow path commands to complete in the RX ring
and return the SPQ credit to bnx2x.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-18 15:16:44 -07:00

4702 lines
120 KiB
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/* cnic.c: Broadcom CNIC core network driver.
*
* Copyright (c) 2006-2010 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>
#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_reg.h"
#include "bnx2x_fw_defs.h"
#include "bnx2x_hsi.h"
#include "../scsi/bnx2i/57xx_iscsi_constants.h"
#include "../scsi/bnx2i/57xx_iscsi_hsi.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);
static LIST_HEAD(cnic_dev_list);
static DEFINE_RWLOCK(cnic_dev_lock);
static DEFINE_MUTEX(cnic_lock);
static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE];
static int cnic_service_bnx2(void *, void *);
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 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_dev *dev = uinfo->priv;
struct cnic_local *cp = dev->cnic_priv;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (cp->uio_dev != -1)
return -EBUSY;
rtnl_lock();
if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
rtnl_unlock();
return -ENODEV;
}
cp->uio_dev = iminor(inode);
cnic_init_rings(dev);
rtnl_unlock();
return 0;
}
static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode)
{
struct cnic_dev *dev = uinfo->priv;
struct cnic_local *cp = dev->cnic_priv;
cnic_shutdown_rings(dev);
cp->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 int cnic_in_use(struct cnic_sock *csk)
{
return test_bit(SK_F_INUSE, &csk->flags);
}
static void cnic_kwq_completion(struct cnic_dev *dev, u32 count)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_eth_dev *ethdev = cp->ethdev;
struct drv_ctl_info info;
info.cmd = DRV_CTL_COMPLETION_CMD;
info.data.comp.comp_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;
for (i = 0; i < MAX_ISCSI_TBL_SZ; 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;
if (cp->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;
}
rcu_read_lock();
ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
if (ulp_ops)
ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len);
rcu_read_unlock();
return 0;
}
static int cnic_iscsi_nl_msg_recv(struct cnic_dev *dev, u32 msg_type,
char *buf, u16 len)
{
int rc = -EINVAL;
switch (msg_type) {
case ISCSI_UEVENT_PATH_UPDATE: {
struct cnic_local *cp;
u32 l5_cid;
struct cnic_sock *csk;
struct iscsi_path *path_resp;
if (len < sizeof(*path_resp))
break;
path_resp = (struct iscsi_path *) buf;
cp = dev->cnic_priv;
l5_cid = (u32) path_resp->handle;
if (l5_cid >= MAX_CM_SK_TBL_SZ)
break;
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)) {
memcpy(csk->ha, path_resp->mac_addr, 6);
if (test_bit(SK_F_IPV6, &csk->flags))
memcpy(&csk->src_ip[0], &path_resp->src.v6_addr,
sizeof(struct in6_addr));
else
memcpy(&csk->src_ip[0], &path_resp->src.v4_addr,
sizeof(struct in_addr));
if (is_valid_ether_addr(csk->ha))
cnic_cm_set_pg(csk);
}
csk_put(csk);
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;
}
static void cnic_uio_stop(void)
{
struct cnic_dev *dev;
read_lock(&cnic_dev_lock);
list_for_each_entry(dev, &cnic_dev_list, list) {
struct cnic_local *cp = dev->cnic_priv;
if (cp->cnic_uinfo)
cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
}
read_unlock(&cnic_dev_lock);
}
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[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();
read_lock(&cnic_dev_lock);
list_for_each_entry(dev, &cnic_dev_list, list) {
struct cnic_local *cp = dev->cnic_priv;
if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
ulp_ops->cnic_init(dev);
}
read_unlock(&cnic_dev_lock);
rtnl_unlock();
return 0;
}
int cnic_unregister_driver(int ulp_type)
{
struct cnic_dev *dev;
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[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);
if (ulp_type == CNIC_ULP_ISCSI)
cnic_uio_stop();
rcu_assign_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)
netdev_warn(dev->netdev, "Failed waiting for ref count to go to zero\n");
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[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[ulp_type];
rcu_assign_pointer(cp->ulp_ops[ulp_type], ulp_ops);
cnic_hold(dev);
if (test_bit(CNIC_F_CNIC_UP, &dev->flags))
if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[ulp_type]))
ulp_ops->cnic_start(cp->ulp_handle[ulp_type]);
mutex_unlock(&cnic_lock);
return 0;
}
EXPORT_SYMBOL(cnic_register_driver);
static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
{
struct cnic_local *cp = dev->cnic_priv;
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_assign_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);
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");
return 0;
}
EXPORT_SYMBOL(cnic_unregister_driver);
static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id)
{
id_tbl->start = start_id;
id_tbl->max = size;
id_tbl->next = 0;
spin_lock_init(&id_tbl->lock);
id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL);
if (!id_tbl->table)
return -ENOMEM;
return 0;
}
static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl)
{
kfree(id_tbl->table);
id_tbl->table = NULL;
}
static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id)
{
int ret = -1;
id -= id_tbl->start;
if (id >= id_tbl->max)
return ret;
spin_lock(&id_tbl->lock);
if (!test_bit(id, id_tbl->table)) {
set_bit(id, id_tbl->table);
ret = 0;
}
spin_unlock(&id_tbl->lock);
return ret;
}
/* Returns -1 if not successful */
static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl)
{
u32 id;
spin_lock(&id_tbl->lock);
id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
if (id >= id_tbl->max) {
id = -1;
if (id_tbl->next != 0) {
id = find_first_zero_bit(id_tbl->table, id_tbl->next);
if (id >= id_tbl->next)
id = -1;
}
}
if (id < id_tbl->max) {
set_bit(id, id_tbl->table);
id_tbl->next = (id + 1) & (id_tbl->max - 1);
id += id_tbl->start;
}
spin_unlock(&id_tbl->lock);
return id;
}
static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id)
{
if (id == -1)
return;
id -= id_tbl->start;
if (id >= id_tbl->max)
return;
clear_bit(id, id_tbl->table);
}
static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma)
{
int i;
if (!dma->pg_arr)
return;
for (i = 0; i < dma->num_pages; i++) {
if (dma->pg_arr[i]) {
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;
u32 *page_table = dma->pgtbl;
for (i = 0; i < dma->num_pages; i++) {
/* Each entry needs to be in big endian format. */
*page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
page_table++;
*page_table = (u32) dma->pg_map_arr[i];
page_table++;
}
}
static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma)
{
int i;
u32 *page_table = dma->pgtbl;
for (i = 0; i < dma->num_pages; i++) {
/* Each entry needs to be in little endian format. */
*page_table = dma->pg_map_arr[i] & 0xffffffff;
page_table++;
*page_table = (u32) ((u64) dma->pg_map_arr[i] >> 32);
page_table++;
}
}
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_resc(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
int i = 0;
if (cp->cnic_uinfo) {
while (cp->uio_dev != -1 && i < 15) {
msleep(100);
i++;
}
uio_unregister_device(cp->cnic_uinfo);
kfree(cp->cnic_uinfo);
cp->cnic_uinfo = NULL;
}
if (cp->l2_buf) {
dma_free_coherent(&dev->pcidev->dev, cp->l2_buf_size,
cp->l2_buf, cp->l2_buf_map);
cp->l2_buf = NULL;
}
if (cp->l2_ring) {
dma_free_coherent(&dev->pcidev->dev, cp->l2_ring_size,
cp->l2_ring, cp->l2_ring_map);
cp->l2_ring = NULL;
}
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->conn_buf_info);
cnic_free_dma(dev, &cp->kwq_info);
cnic_free_dma(dev, &cp->kwq_16_data_info);
cnic_free_dma(dev, &cp->kcq_info);
kfree(cp->iscsi_tbl);
cp->iscsi_tbl = NULL;
kfree(cp->ctx_tbl);
cp->ctx_tbl = NULL;
cnic_free_id_tbl(&cp->cid_tbl);
}
static int cnic_alloc_context(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
if (CHIP_NUM(cp) == CHIP_NUM_5709) {
int i, k, arr_size;
cp->ctx_blk_size = BCM_PAGE_SIZE;
cp->cids_per_blk = BCM_PAGE_SIZE / 128;
arr_size = BNX2_MAX_CID / cp->cids_per_blk *
sizeof(struct cnic_ctx);
cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL);
if (cp->ctx_arr == NULL)
return -ENOMEM;
k = 0;
for (i = 0; i < 2; i++) {
u32 j, reg, off, lo, hi;
if (i == 0)
off = BNX2_PG_CTX_MAP;
else
off = BNX2_ISCSI_CTX_MAP;
reg = cnic_reg_rd_ind(dev, off);
lo = reg >> 16;
hi = reg & 0xffff;
for (j = lo; j < hi; j += cp->cids_per_blk, k++)
cp->ctx_arr[k].cid = j;
}
cp->ctx_blks = k;
if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) {
cp->ctx_blks = 0;
return -ENOMEM;
}
for (i = 0; i < cp->ctx_blks; i++) {
cp->ctx_arr[i].ctx =
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 int cnic_alloc_l2_rings(struct cnic_dev *dev, int pages)
{
struct cnic_local *cp = dev->cnic_priv;
cp->l2_ring_size = pages * BCM_PAGE_SIZE;
cp->l2_ring = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_ring_size,
&cp->l2_ring_map,
GFP_KERNEL | __GFP_COMP);
if (!cp->l2_ring)
return -ENOMEM;
cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size);
cp->l2_buf = dma_alloc_coherent(&dev->pcidev->dev, cp->l2_buf_size,
&cp->l2_buf_map,
GFP_KERNEL | __GFP_COMP);
if (!cp->l2_buf)
return -ENOMEM;
return 0;
}
static int cnic_alloc_uio(struct cnic_dev *dev) {
struct cnic_local *cp = dev->cnic_priv;
struct uio_info *uinfo;
int ret;
uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC);
if (!uinfo)
return -ENOMEM;
uinfo->mem[0].addr = dev->netdev->base_addr;
uinfo->mem[0].internal_addr = dev->regview;
uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
uinfo->mem[0].memtype = UIO_MEM_PHYS;
if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
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[1].addr = (unsigned long) cp->bnx2x_def_status_blk &
PAGE_MASK;
uinfo->mem[1].size = sizeof(struct host_def_status_block);
uinfo->name = "bnx2x_cnic";
}
uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
uinfo->mem[2].addr = (unsigned long) cp->l2_ring;
uinfo->mem[2].size = cp->l2_ring_size;
uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
uinfo->mem[3].addr = (unsigned long) cp->l2_buf;
uinfo->mem[3].size = cp->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;
uinfo->priv = dev;
ret = uio_register_device(&dev->pcidev->dev, uinfo);
if (ret) {
kfree(uinfo);
return ret;
}
cp->cnic_uinfo = uinfo;
return 0;
}
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_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1);
if (ret)
goto error;
cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
ret = cnic_alloc_context(dev);
if (ret)
goto error;
ret = cnic_alloc_l2_rings(dev, 2);
if (ret)
goto error;
ret = cnic_alloc_uio(dev);
if (ret)
goto error;
return 0;
error:
cnic_free_resc(dev);
return ret;
}
static int cnic_alloc_bnx2x_context(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_eth_dev *ethdev = cp->ethdev;
int ctx_blk_size = cp->ethdev->ctx_blk_size;
int total_mem, blks, i, cid_space;
if (BNX2X_ISCSI_START_CID < ethdev->starting_cid)
return -EINVAL;
cid_space = MAX_ISCSI_TBL_SZ +
(BNX2X_ISCSI_START_CID - ethdev->starting_cid);
total_mem = BNX2X_CONTEXT_MEM_SIZE * 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 = kzalloc(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_E1H(cp->chip_id))
cp->ctx_align = 0;
else
cp->ctx_align = ctx_blk_size;
cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE;
for (i = 0; i < blks; i++) {
cp->ctx_arr[i].ctx =
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;
int i, j, n, ret, pages;
struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info;
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) *
MAX_CNIC_L5_CONTEXT, 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;
}
pages = PAGE_ALIGN(MAX_CNIC_L5_CONTEXT * 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 < MAX_ISCSI_TBL_SZ; 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_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 0);
if (ret)
goto error;
cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
for (i = 0; i < KCQ_PAGE_CNT; i++) {
struct bnx2x_bd_chain_next *next =
(struct bnx2x_bd_chain_next *)
&cp->kcq[i][MAX_KCQE_CNT];
int j = i + 1;
if (j >= KCQ_PAGE_CNT)
j = 0;
next->addr_hi = (u64) cp->kcq_info.pg_map_arr[j] >> 32;
next->addr_lo = cp->kcq_info.pg_map_arr[j] & 0xffffffff;
}
pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS *
BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE;
ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1);
if (ret)
goto error;
pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE;
ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0);
if (ret)
goto error;
ret = cnic_alloc_bnx2x_context(dev);
if (ret)
goto error;
cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk;
memset(cp->status_blk.bnx2x, 0, sizeof(*cp->status_blk.bnx2x));
cp->l2_rx_ring_size = 15;
ret = cnic_alloc_l2_rings(dev, 4);
if (ret)
goto error;
ret = cnic_alloc_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];
int ret;
kwqe.hdr.conn_and_cmd_data =
cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) |
BNX2X_HW_CID(cid, cp->func)));
kwqe.hdr.type = cpu_to_le16(type);
kwqe.hdr.reserved = 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 -EBUSY;
}
static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type,
struct kcqe *cqes[], u32 num_cqes)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_ulp_ops *ulp_ops;
rcu_read_lock();
ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]);
if (likely(ulp_ops)) {
ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type],
cqes, num_cqes);
}
rcu_read_unlock();
}
static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe)
{
struct cnic_local *cp = dev->cnic_priv;
struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe;
int func = cp->func, pages;
int hq_bds;
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(func),
req1->rq_num_wqes);
CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
PAGE_SIZE);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
req1->num_tasks_per_conn);
/* init Ustorm RAM */
CNIC_WR16(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(func),
req1->rq_buffer_size);
CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(func),
PAGE_SIZE);
CNIC_WR8(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
CNIC_WR16(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
req1->num_tasks_per_conn);
CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(func),
req1->rq_num_wqes);
CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(func),
req1->cq_num_wqes);
CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
/* init Xstorm RAM */
CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
PAGE_SIZE);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
req1->num_tasks_per_conn);
CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(func),
hq_bds);
CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(func),
req1->num_tasks_per_conn);
CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(func),
cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS);
/* init Cstorm RAM */
CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(func),
PAGE_SIZE);
CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(func), PAGE_SHIFT);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(func),
req1->num_tasks_per_conn);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(func),
req1->cq_num_wqes);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(func),
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;
int func = cp->func;
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(func), req2->error_bit_map[0]);
CNIC_WR(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
req2->error_bit_map[1]);
CNIC_WR16(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), req2->max_cq_sqn);
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_ERROR_BITMAP_OFFSET(func), req2->error_bit_map[0]);
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_ERROR_BITMAP_OFFSET(func) + 4,
req2->error_bit_map[1]);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(func), 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);
ctx->cid = 0;
}
static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid)
{
u32 cid;
int ret, pages;
struct cnic_local *cp = dev->cnic_priv;
struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
struct cnic_iscsi *iscsi = ctx->proto.iscsi;
cid = cnic_alloc_new_id(&cp->cid_tbl);
if (cid == -1) {
ret = -ENOMEM;
goto error;
}
ctx->cid = cid;
pages = PAGE_ALIGN(cp->task_array_size) / PAGE_SIZE;
ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1);
if (ret)
goto error;
pages = PAGE_ALIGN(cp->r2tq_size) / PAGE_SIZE;
ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1);
if (ret)
goto error;
pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE;
ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1);
if (ret)
goto error;
return 0;
error:
cnic_free_bnx2x_conn_resc(dev, l5_cid);
return ret;
}
static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init,
struct regpair *ctx_addr)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_eth_dev *ethdev = cp->ethdev;
int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk;
int off = (cid - ethdev->starting_cid) % cp->cids_per_blk;
unsigned long align_off = 0;
dma_addr_t ctx_map;
void *ctx;
if (cp->ctx_align) {
unsigned long mask = cp->ctx_align - 1;
if (cp->ctx_arr[blk].mapping & mask)
align_off = cp->ctx_align -
(cp->ctx_arr[blk].mapping & mask);
}
ctx_map = cp->ctx_arr[blk].mapping + align_off +
(off * BNX2X_CONTEXT_MEM_SIZE);
ctx = cp->ctx_arr[blk].ctx + align_off +
(off * BNX2X_CONTEXT_MEM_SIZE);
if (init)
memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE);
ctx_addr->lo = ctx_map & 0xffffffff;
ctx_addr->hi = (u64) ctx_map >> 32;
return ctx;
}
static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[],
u32 num)
{
struct cnic_local *cp = dev->cnic_priv;
struct iscsi_kwqe_conn_offload1 *req1 =
(struct iscsi_kwqe_conn_offload1 *) wqes[0];
struct iscsi_kwqe_conn_offload2 *req2 =
(struct iscsi_kwqe_conn_offload2 *) wqes[1];
struct iscsi_kwqe_conn_offload3 *req3;
struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id];
struct cnic_iscsi *iscsi = ctx->proto.iscsi;
u32 cid = ctx->cid;
u32 hw_cid = BNX2X_HW_CID(cid, cp->func);
struct iscsi_context *ictx;
struct regpair context_addr;
int i, j, n = 2, n_max;
ctx->ctx_flags = 0;
if (!req2->num_additional_wqes)
return -EINVAL;
n_max = req2->num_additional_wqes + 2;
ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr);
if (ictx == NULL)
return -ENOMEM;
req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++];
ictx->xstorm_ag_context.hq_prod = 1;
ictx->xstorm_st_context.iscsi.first_burst_length =
ISCSI_DEF_FIRST_BURST_LEN;
ictx->xstorm_st_context.iscsi.max_send_pdu_length =
ISCSI_DEF_MAX_RECV_SEG_LEN;
ictx->xstorm_st_context.iscsi.sq_pbl_base.lo =
req1->sq_page_table_addr_lo;
ictx->xstorm_st_context.iscsi.sq_pbl_base.hi =
req1->sq_page_table_addr_hi;
ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi;
ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo;
ictx->xstorm_st_context.iscsi.hq_pbl_base.lo =
iscsi->hq_info.pgtbl_map & 0xffffffff;
ictx->xstorm_st_context.iscsi.hq_pbl_base.hi =
(u64) iscsi->hq_info.pgtbl_map >> 32;
ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo =
iscsi->hq_info.pgtbl[0];
ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi =
iscsi->hq_info.pgtbl[1];
ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo =
iscsi->r2tq_info.pgtbl_map & 0xffffffff;
ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi =
(u64) iscsi->r2tq_info.pgtbl_map >> 32;
ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo =
iscsi->r2tq_info.pgtbl[0];
ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi =
iscsi->r2tq_info.pgtbl[1];
ictx->xstorm_st_context.iscsi.task_pbl_base.lo =
iscsi->task_array_info.pgtbl_map & 0xffffffff;
ictx->xstorm_st_context.iscsi.task_pbl_base.hi =
(u64) iscsi->task_array_info.pgtbl_map >> 32;
ictx->xstorm_st_context.iscsi.task_pbl_cache_idx =
BNX2X_ISCSI_PBL_NOT_CACHED;
ictx->xstorm_st_context.iscsi.flags.flags |=
XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA;
ictx->xstorm_st_context.iscsi.flags.flags |=
XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T;
ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE;
/* TSTORM requires the base address of RQ DB & not PTE */
ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo =
req2->rq_page_table_addr_lo & PAGE_MASK;
ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi =
req2->rq_page_table_addr_hi;
ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id;
ictx->tstorm_st_context.tcp.cwnd = 0x5A8;
ictx->tstorm_st_context.tcp.flags2 |=
TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN;
ictx->timers_context.flags |= ISCSI_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 iscsi_kcqe kcqe;
struct kcqe *cqes[1];
u32 l5_cid;
int ret;
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;
if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) {
atomic_dec(&cp->iscsi_conn);
ret = 0;
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->ctx_tbl[l5_cid].cid,
cp->func);
done:
cqes[0] = (struct kcqe *) &kcqe;
cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
return ret;
}
static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe)
{
struct cnic_local *cp = dev->cnic_priv;
struct iscsi_kwqe_conn_update *req =
(struct iscsi_kwqe_conn_update *) kwqe;
void *data;
union l5cm_specific_data l5_data;
u32 l5_cid, cid = BNX2X_SW_CID(req->context_id);
int ret;
if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0)
return -EINVAL;
data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data);
if (!data)
return -ENOMEM;
memcpy(data, kwqe, sizeof(struct kwqe));
ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
req->context_id, ISCSI_CONNECTION_TYPE, &l5_data);
return ret;
}
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;
union l5cm_specific_data l5_data;
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 (!(ctx->ctx_flags & CTX_FL_OFFLD_START))
goto skip_cfc_delete;
while (!time_after(jiffies, ctx->timestamp + (2 * HZ)))
msleep(250);
init_waitqueue_head(&ctx->waitq);
ctx->wait_cond = 0;
memset(&l5_data, 0, sizeof(l5_data));
ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
req->context_id,
ETH_CONNECTION_TYPE |
(1 << SPE_HDR_COMMON_RAMROD_SHIFT),
&l5_data);
if (ret == 0)
wait_event(ctx->waitq, ctx->wait_cond);
skip_cfc_delete:
cnic_free_bnx2x_conn_resc(dev, l5_cid);
atomic_dec(&cp->iscsi_conn);
memset(&kcqe, 0, sizeof(kcqe));
kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN;
kcqe.iscsi_conn_id = l5_cid;
kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS;
kcqe.iscsi_conn_context_id = req->context_id;
cqes[0] = (struct kcqe *) &kcqe;
cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1);
return ret;
}
static void cnic_init_storm_conn_bufs(struct cnic_dev *dev,
struct l4_kwq_connect_req1 *kwqe1,
struct l4_kwq_connect_req3 *kwqe3,
struct l5cm_active_conn_buffer *conn_buf)
{
struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf;
struct l5cm_xstorm_conn_buffer *xstorm_buf =
&conn_buf->xstorm_conn_buffer;
struct l5cm_tstorm_conn_buffer *tstorm_buf =
&conn_buf->tstorm_conn_buffer;
struct regpair context_addr;
u32 cid = BNX2X_SW_CID(kwqe1->cid);
struct in6_addr src_ip, dst_ip;
int i;
u32 *addrp;
addrp = (u32 *) &conn_addr->local_ip_addr;
for (i = 0; i < 4; i++, addrp++)
src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
addrp = (u32 *) &conn_addr->remote_ip_addr;
for (i = 0; i < 4; i++, addrp++)
dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp);
cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr);
xstorm_buf->context_addr.hi = context_addr.hi;
xstorm_buf->context_addr.lo = context_addr.lo;
xstorm_buf->mss = 0xffff;
xstorm_buf->rcv_buf = kwqe3->rcv_buf;
if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE)
xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE;
xstorm_buf->pseudo_header_checksum =
swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0));
if (!(kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK))
tstorm_buf->params |=
L5CM_TSTORM_CONN_BUFFER_DELAYED_ACK_ENABLE;
if (kwqe3->ka_timeout) {
tstorm_buf->ka_enable = 1;
tstorm_buf->ka_timeout = kwqe3->ka_timeout;
tstorm_buf->ka_interval = kwqe3->ka_interval;
tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count;
}
tstorm_buf->rcv_buf = kwqe3->rcv_buf;
tstorm_buf->snd_buf = kwqe3->snd_buf;
tstorm_buf->max_rt_time = 0xffffffff;
}
static void cnic_init_bnx2x_mac(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
int func = CNIC_FUNC(cp);
u8 *mac = dev->mac_addr;
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(func), mac[0]);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(func), mac[1]);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(func), mac[2]);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(func), mac[3]);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(func), mac[4]);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(func), mac[5]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func), mac[5]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
mac[4]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func), mac[3]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 1,
mac[2]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 2,
mac[1]);
CNIC_WR8(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(func) + 3,
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->func), xstorm_flags);
CNIC_WR16(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->func), 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->func), 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)
ctx->ctx_flags |= CTX_FL_OFFLD_START;
return ret;
}
static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe)
{
struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe;
union l5cm_specific_data l5_data;
int ret;
memset(&l5_data, 0, sizeof(l5_data));
ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE,
req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
return ret;
}
static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe)
{
struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe;
union l5cm_specific_data l5_data;
int ret;
memset(&l5_data, 0, sizeof(l5_data));
ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT,
req->cid, ISCSI_CONNECTION_TYPE, &l5_data);
return ret;
}
static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe)
{
struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe;
struct l4_kcq kcqe;
struct kcqe *cqes[1];
memset(&kcqe, 0, sizeof(kcqe));
kcqe.pg_host_opaque = req->host_opaque;
kcqe.pg_cid = req->host_opaque;
kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG;
cqes[0] = (struct kcqe *) &kcqe;
cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
return 0;
}
static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe)
{
struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe;
struct l4_kcq kcqe;
struct kcqe *cqes[1];
memset(&kcqe, 0, sizeof(kcqe));
kcqe.pg_host_opaque = req->pg_host_opaque;
kcqe.pg_cid = req->pg_cid;
kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG;
cqes[0] = (struct kcqe *) &kcqe;
cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1);
return 0;
}
static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[],
u32 num_wqes)
{
int i, work, ret;
u32 opcode;
struct kwqe *kwqe;
if (!test_bit(CNIC_F_CNIC_UP, &dev->flags))
return -EAGAIN; /* bnx2 is down */
for (i = 0; i < num_wqes; ) {
kwqe = wqes[i];
opcode = KWQE_OPCODE(kwqe->kwqe_op_flag);
work = 1;
switch (opcode) {
case ISCSI_KWQE_OPCODE_INIT1:
ret = cnic_bnx2x_iscsi_init1(dev, kwqe);
break;
case ISCSI_KWQE_OPCODE_INIT2:
ret = cnic_bnx2x_iscsi_init2(dev, kwqe);
break;
case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1:
ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i],
num_wqes - i, &work);
break;
case ISCSI_KWQE_OPCODE_UPDATE_CONN:
ret = cnic_bnx2x_iscsi_update(dev, kwqe);
break;
case ISCSI_KWQE_OPCODE_DESTROY_CONN:
ret = cnic_bnx2x_iscsi_destroy(dev, kwqe);
break;
case L4_KWQE_OPCODE_VALUE_CONNECT1:
ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i,
&work);
break;
case L4_KWQE_OPCODE_VALUE_CLOSE:
ret = cnic_bnx2x_close(dev, kwqe);
break;
case L4_KWQE_OPCODE_VALUE_RESET:
ret = cnic_bnx2x_reset(dev, kwqe);
break;
case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG:
ret = cnic_bnx2x_offload_pg(dev, kwqe);
break;
case L4_KWQE_OPCODE_VALUE_UPDATE_PG:
ret = cnic_bnx2x_update_pg(dev, kwqe);
break;
case L4_KWQE_OPCODE_VALUE_UPLOAD_PG:
ret = 0;
break;
default:
ret = 0;
netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n",
opcode);
break;
}
if (ret < 0)
netdev_err(dev->netdev, "KWQE(0x%x) failed\n",
opcode);
i += work;
}
return 0;
}
static void service_kcqes(struct cnic_dev *dev, int num_cqes)
{
struct cnic_local *cp = dev->cnic_priv;
int i, j;
i = 0;
j = 1;
while (num_cqes) {
struct cnic_ulp_ops *ulp_ops;
int ulp_type;
u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag;
u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK;
if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION))
cnic_kwq_completion(dev, 1);
while (j < num_cqes) {
u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag;
if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer)
break;
if (unlikely(next_op & KCQE_RAMROD_COMPLETION))
cnic_kwq_completion(dev, 1);
j++;
}
if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA)
ulp_type = CNIC_ULP_RDMA;
else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI)
ulp_type = CNIC_ULP_ISCSI;
else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4)
ulp_type = CNIC_ULP_L4;
else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2)
goto end;
else {
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;
}
}
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_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
{
struct cnic_local *cp = dev->cnic_priv;
u16 i, ri, last;
struct kcqe *kcqe;
int kcqe_cnt = 0, last_cnt = 0;
i = ri = last = *sw_prod;
ri &= MAX_KCQ_IDX;
while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
cp->completed_kcq[kcqe_cnt++] = kcqe;
i = cp->next_idx(i);
ri = i & MAX_KCQ_IDX;
if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
last_cnt = kcqe_cnt;
last = i;
}
}
*sw_prod = last;
return last_cnt;
}
static int cnic_l2_completion(struct cnic_local *cp)
{
u16 hw_cons, sw_cons;
union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *)
(cp->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 = *cp->rx_cons_ptr;
u16 tx_cons = *cp->tx_cons_ptr;
int comp = 0;
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;
uio_event_notify(cp->cnic_uinfo);
}
if (comp)
clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags);
}
static int cnic_service_bnx2(void *data, void *status_blk)
{
struct cnic_dev *dev = data;
struct status_block *sblk = status_blk;
struct cnic_local *cp = dev->cnic_priv;
u32 status_idx = sblk->status_idx;
u16 hw_prod, sw_prod;
int kcqe_cnt;
if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
return status_idx;
cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
hw_prod = sblk->status_completion_producer_index;
sw_prod = cp->kcq_prod_idx;
while (sw_prod != hw_prod) {
kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
if (kcqe_cnt == 0)
goto done;
service_kcqes(dev, kcqe_cnt);
/* Tell compiler that status_blk fields can change. */
barrier();
if (status_idx != sblk->status_idx) {
status_idx = sblk->status_idx;
cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
hw_prod = sblk->status_completion_producer_index;
} else
break;
}
done:
CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
cp->kcq_prod_idx = sw_prod;
cnic_chk_pkt_rings(cp);
return status_idx;
}
static void cnic_service_bnx2_msix(unsigned long data)
{
struct cnic_dev *dev = (struct cnic_dev *) data;
struct cnic_local *cp = dev->cnic_priv;
struct status_block_msix *status_blk = cp->status_blk.bnx2;
u32 status_idx = status_blk->status_idx;
u16 hw_prod, sw_prod;
int kcqe_cnt;
cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
hw_prod = status_blk->status_completion_producer_index;
sw_prod = cp->kcq_prod_idx;
while (sw_prod != hw_prod) {
kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
if (kcqe_cnt == 0)
goto done;
service_kcqes(dev, kcqe_cnt);
/* Tell compiler that status_blk fields can change. */
barrier();
if (status_idx != status_blk->status_idx) {
status_idx = status_blk->status_idx;
cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
hw_prod = status_blk->status_completion_producer_index;
} else
break;
}
done:
CNIC_WR16(dev, cp->kcq_io_addr, sw_prod);
cp->kcq_prod_idx = sw_prod;
cnic_chk_pkt_rings(cp);
cp->last_status_idx = status_idx;
CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num |
BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx);
}
static irqreturn_t cnic_irq(int irq, void *dev_instance)
{
struct cnic_dev *dev = dev_instance;
struct cnic_local *cp = dev->cnic_priv;
u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
if (cp->ack_int)
cp->ack_int(dev);
prefetch(cp->status_blk.gen);
prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags)))
tasklet_schedule(&cp->cnic_irq_task);
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_bnx2x_msix(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID, 0,
IGU_INT_DISABLE, 0);
}
static void cnic_service_bnx2x_bh(unsigned long data)
{
struct cnic_dev *dev = (struct cnic_dev *) data;
struct cnic_local *cp = dev->cnic_priv;
u16 hw_prod, sw_prod;
struct cstorm_status_block_c *sblk =
&cp->status_blk.bnx2x->c_status_block;
u32 status_idx = sblk->status_block_index;
int kcqe_cnt;
if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
return;
hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
hw_prod = cp->hw_idx(hw_prod);
sw_prod = cp->kcq_prod_idx;
while (sw_prod != hw_prod) {
kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
if (kcqe_cnt == 0)
goto done;
service_kcqes(dev, kcqe_cnt);
/* Tell compiler that sblk fields can change. */
barrier();
if (status_idx == sblk->status_block_index)
break;
status_idx = sblk->status_block_index;
hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
hw_prod = cp->hw_idx(hw_prod);
}
done:
CNIC_WR16(dev, cp->kcq_io_addr, sw_prod + MAX_KCQ_IDX);
cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID,
status_idx, IGU_INT_ENABLE, 1);
cp->kcq_prod_idx = sw_prod;
}
static int cnic_service_bnx2x(void *data, void *status_blk)
{
struct cnic_dev *dev = data;
struct cnic_local *cp = dev->cnic_priv;
u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX;
if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) {
prefetch(cp->status_blk.bnx2x);
prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]);
tasklet_schedule(&cp->cnic_irq_task);
cnic_chk_pkt_rings(cp);
}
return 0;
}
static void cnic_ulp_stop(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
int if_type;
if (cp->cnic_uinfo)
cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
struct cnic_ulp_ops *ulp_ops;
mutex_lock(&cnic_lock);
ulp_ops = cp->ulp_ops[if_type];
if (!ulp_ops) {
mutex_unlock(&cnic_lock);
continue;
}
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_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 = cp->ulp_ops[if_type];
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_ctl(void *data, struct cnic_ctl_info *info)
{
struct cnic_dev *dev = data;
switch (info->cmd) {
case CNIC_CTL_STOP_CMD:
cnic_hold(dev);
cnic_ulp_stop(dev);
cnic_stop_hw(dev);
cnic_put(dev);
break;
case CNIC_CTL_START_CMD:
cnic_hold(dev);
if (!cnic_start_hw(dev))
cnic_ulp_start(dev);
cnic_put(dev);
break;
case CNIC_CTL_COMPLETION_CMD: {
u32 cid = BNX2X_SW_CID(info->data.comp.cid);
u32 l5_cid;
struct cnic_local *cp = dev->cnic_priv;
if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) {
struct cnic_context *ctx = &cp->ctx_tbl[l5_cid];
ctx->wait_cond = 1;
wake_up(&ctx->waitq);
}
break;
}
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[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[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;
csk1 = &cp->csk_tbl[l5_cid];
if (atomic_read(&csk1->ref_count))
return -EAGAIN;
if (test_and_set_bit(SK_F_INUSE, &csk1->flags))
return -EBUSY;
csk1->dev = dev;
csk1->cid = cid;
csk1->l5_cid = l5_cid;
csk1->ulp_type = ulp_type;
csk1->context = context;
csk1->ka_timeout = DEF_KA_TIMEOUT;
csk1->ka_interval = DEF_KA_INTERVAL;
csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT;
csk1->tos = DEF_TOS;
csk1->ttl = DEF_TTL;
csk1->snd_seq_scale = DEF_SND_SEQ_SCALE;
csk1->rcv_buf = DEF_RCV_BUF;
csk1->snd_buf = DEF_SND_BUF;
csk1->seed = DEF_SEED;
*csk = csk1;
return 0;
}
static void cnic_cm_cleanup(struct cnic_sock *csk)
{
if (csk->src_port) {
struct cnic_dev *dev = csk->dev;
struct cnic_local *cp = dev->cnic_priv;
cnic_free_id(&cp->csk_port_tbl, csk->src_port);
csk->src_port = 0;
}
}
static void cnic_close_conn(struct cnic_sock *csk)
{
if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) {
cnic_cm_upload_pg(csk);
clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags);
}
cnic_cm_cleanup(csk);
}
static int cnic_cm_destroy(struct cnic_sock *csk)
{
if (!cnic_in_use(csk))
return -EINVAL;
csk_hold(csk);
clear_bit(SK_F_INUSE, &csk->flags);
smp_mb__after_clear_bit();
while (atomic_read(&csk->ref_count) != 1)
msleep(1);
cnic_cm_cleanup(csk);
csk->flags = 0;
csk_put(csk);
return 0;
}
static inline u16 cnic_get_vlan(struct net_device *dev,
struct net_device **vlan_dev)
{
if (dev->priv_flags & IFF_802_1Q_VLAN) {
*vlan_dev = vlan_dev_real_dev(dev);
return vlan_dev_vlan_id(dev);
}
*vlan_dev = dev;
return 0;
}
static int cnic_get_v4_route(struct sockaddr_in *dst_addr,
struct dst_entry **dst)
{
#if defined(CONFIG_INET)
struct flowi fl;
int err;
struct rtable *rt;
memset(&fl, 0, sizeof(fl));
fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr;
err = ip_route_output_key(&init_net, &rt, &fl);
if (!err)
*dst = &rt->u.dst;
return err;
#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 flowi fl;
memset(&fl, 0, sizeof(fl));
ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr);
if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL)
fl.oif = dst_addr->sin6_scope_id;
*dst = ip6_route_output(&init_net, NULL, &fl);
if (*dst)
return 0;
#endif
return -ENETUNREACH;
}
static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr,
int ulp_type)
{
struct cnic_dev *dev = NULL;
struct dst_entry *dst;
struct net_device *netdev = NULL;
int err = -ENETUNREACH;
if (dst_addr->sin_family == AF_INET)
err = cnic_get_v4_route(dst_addr, &dst);
else if (dst_addr->sin_family == AF_INET6) {
struct sockaddr_in6 *dst_addr6 =
(struct sockaddr_in6 *) dst_addr;
err = cnic_get_v6_route(dst_addr6, &dst);
} else
return NULL;
if (err)
return NULL;
if (!dst->dev)
goto done;
cnic_get_vlan(dst->dev, &netdev);
dev = cnic_from_netdev(netdev);
done:
dst_release(dst);
if (dev)
cnic_put(dev);
return dev;
}
static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
struct cnic_dev *dev = csk->dev;
struct cnic_local *cp = dev->cnic_priv;
return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk);
}
static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
struct cnic_dev *dev = csk->dev;
struct cnic_local *cp = dev->cnic_priv;
int is_v6, rc = 0;
struct dst_entry *dst = NULL;
struct net_device *realdev;
u32 local_port;
if (saddr->local.v6.sin6_family == AF_INET6 &&
saddr->remote.v6.sin6_family == AF_INET6)
is_v6 = 1;
else if (saddr->local.v4.sin_family == AF_INET &&
saddr->remote.v4.sin_family == AF_INET)
is_v6 = 0;
else
return -EINVAL;
clear_bit(SK_F_IPV6, &csk->flags);
if (is_v6) {
set_bit(SK_F_IPV6, &csk->flags);
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);
}
}
if (local_port >= CNIC_LOCAL_PORT_MIN &&
local_port < CNIC_LOCAL_PORT_MAX) {
if (cnic_alloc_id(&cp->csk_port_tbl, local_port))
local_port = 0;
} else
local_port = 0;
if (!local_port) {
local_port = cnic_alloc_new_id(&cp->csk_port_tbl);
if (local_port == -1) {
rc = -ENOMEM;
goto err_out;
}
}
csk->src_port = local_port;
err_out:
dst_release(dst);
return rc;
}
static void cnic_init_csk_state(struct cnic_sock *csk)
{
csk->state = 0;
clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
clear_bit(SK_F_CLOSING, &csk->flags);
}
static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
int err = 0;
if (!cnic_in_use(csk))
return -EINVAL;
if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags))
return -EINVAL;
cnic_init_csk_state(csk);
err = cnic_get_route(csk, saddr);
if (err)
goto err_out;
err = cnic_resolve_addr(csk, saddr);
if (!err)
return 0;
err_out:
clear_bit(SK_F_CONNECT_START, &csk->flags);
return err;
}
static int cnic_cm_abort(struct cnic_sock *csk)
{
struct cnic_local *cp = csk->dev->cnic_priv;
u32 opcode;
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.
*/
csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP;
if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags))
opcode = csk->state;
else
opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD;
cp->close_conn(csk, opcode);
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);
}
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_cm_process_kcqe(struct cnic_dev *dev, struct kcqe *kcqe)
{
struct cnic_local *cp = dev->cnic_priv;
struct l4_kcq *l4kcqe = (struct l4_kcq *) kcqe;
u8 opcode = l4kcqe->op_code;
u32 l5_cid;
struct cnic_sock *csk;
if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG ||
opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) {
cnic_cm_process_offld_pg(dev, l4kcqe);
return;
}
l5_cid = l4kcqe->conn_id;
if (opcode & 0x80)
l5_cid = l4kcqe->cid;
if (l5_cid >= MAX_CM_SK_TBL_SZ)
return;
csk = &cp->csk_tbl[l5_cid];
csk_hold(csk);
if (!cnic_in_use(csk)) {
csk_put(csk);
return;
}
switch (opcode) {
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);
smp_mb__before_clear_bit();
clear_bit(SK_F_OFFLD_SCHED, &csk->flags);
cnic_cm_upcall(cp, csk, opcode);
break;
case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED:
if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
cnic_cm_upcall(cp, csk, opcode);
break;
} else if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags))
csk->state = opcode;
/* fall through */
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:
cp->close_conn(csk, opcode);
break;
case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED:
cnic_cm_upcall(cp, csk, opcode);
break;
}
csk_put(csk);
}
static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num)
{
struct cnic_dev *dev = data;
int i;
for (i = 0; i < num; i++)
cnic_cm_process_kcqe(dev, kcqe[i]);
}
static struct cnic_ulp_ops cm_ulp_ops = {
.indicate_kcqes = cnic_cm_indicate_kcqe,
};
static void cnic_cm_free_mem(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
kfree(cp->csk_tbl);
cp->csk_tbl = NULL;
cnic_free_id_tbl(&cp->csk_port_tbl);
}
static int cnic_cm_alloc_mem(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ,
GFP_KERNEL);
if (!cp->csk_tbl)
return -ENOMEM;
if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
CNIC_LOCAL_PORT_MIN)) {
cnic_cm_free_mem(dev);
return -ENOMEM;
}
return 0;
}
static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode)
{
if ((opcode == csk->state) ||
(opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED &&
csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) {
if (!test_and_set_bit(SK_F_CLOSING, &csk->flags))
return 1;
}
/* 57710+ only workaround to handle unsolicited RESET_COMP
* which will be treated like a RESET RCVD notification
* which triggers the clean up procedure
*/
else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) {
if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) {
csk->state = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED;
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;
clear_bit(SK_F_CONNECT_START, &csk->flags);
cnic_close_conn(csk);
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;
get_random_bytes(&seed, 4);
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))
cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE;
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)
{
}
static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
int func = CNIC_FUNC(cp);
cnic_init_bnx2x_mac(dev);
cnic_bnx2x_set_tcp_timestamp(dev, 1);
CNIC_WR16(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_LOCAL_VLAN_OFFSET(func), 0);
CNIC_WR(dev, BAR_XSTRORM_INTMEM +
XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(func), 1);
CNIC_WR(dev, BAR_XSTRORM_INTMEM +
XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(func),
DEF_MAX_DA_COUNT);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(func), DEF_TTL);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(func), DEF_TOS);
CNIC_WR8(dev, BAR_XSTRORM_INTMEM +
XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(func), 2);
CNIC_WR(dev, BAR_XSTRORM_INTMEM +
XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(func), DEF_SWS_TIMER);
CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(func),
DEF_MAX_CWND);
return 0;
}
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;
dev->cm_create = cnic_cm_create;
dev->cm_destroy = cnic_cm_destroy;
dev->cm_connect = cnic_cm_connect;
dev->cm_abort = cnic_cm_abort;
dev->cm_close = cnic_cm_close;
dev->cm_select_dev = cnic_cm_select_dev;
cp->ulp_handle[CNIC_ULP_L4] = dev;
rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops);
return 0;
err_out:
cnic_cm_free_mem(dev);
return err;
}
static int cnic_cm_shutdown(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
int i;
cp->stop_cm(dev);
if (!cp->csk_tbl)
return 0;
for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) {
struct cnic_sock *csk = &cp->csk_tbl[i];
clear_bit(SK_F_INUSE, &csk->flags);
cnic_cm_cleanup(csk);
}
cnic_cm_free_mem(dev);
return 0;
}
static void cnic_init_context(struct cnic_dev *dev, u32 cid)
{
struct cnic_local *cp = dev->cnic_priv;
u32 cid_addr;
int i;
if (CHIP_NUM(cp) == CHIP_NUM_5709)
return;
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_disable(&cp->cnic_irq_task);
free_irq(ethdev->irq_arr[0].vector, dev);
}
}
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 = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
"cnic", dev);
if (err) {
tasklet_disable(&cp->cnic_irq_task);
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;
u32 cid_addr, tx_cid, sb_id;
u32 val, offset0, offset1, offset2, offset3;
int i;
struct tx_bd *txbd;
dma_addr_t buf_map;
struct status_block *s_blk = cp->status_blk.gen;
sb_id = cp->status_blk_num;
tx_cid = 20;
cnic_init_context(dev, tx_cid);
cnic_init_context(dev, tx_cid + 1);
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_init_context(dev, tx_cid);
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 {
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 = (struct tx_bd *) cp->l2_ring;
buf_map = cp->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) cp->l2_ring_map >> 32;
cnic_ctx_wr(dev, cid_addr, offset2, val);
txbd->tx_bd_haddr_hi = val;
val = (u64) cp->l2_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;
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;
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 = (struct rx_bd *) (cp->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 = cp->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) (cp->l2_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) (cp->l2_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_FLAGS_LAYER_SHIFT) |
(L2_KWQE_OPCODE_VALUE_FLUSH <<
KWQE_OPCODE_SHIFT) | 2;
dev->submit_kwqes(dev, wqes, 1);
}
static void cnic_set_bnx2_mac(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
u32 val;
val = cp->func << 2;
cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val);
val = cnic_reg_rd_ind(dev, cp->shmem_base +
BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER);
dev->mac_addr[0] = (u8) (val >> 8);
dev->mac_addr[1] = (u8) val;
CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val);
val = cnic_reg_rd_ind(dev, cp->shmem_base +
BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER);
dev->mac_addr[2] = (u8) (val >> 24);
dev->mac_addr[3] = (u8) (val >> 16);
dev->mac_addr[4] = (u8) (val >> 8);
dev->mac_addr[5] = (u8) val;
CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val);
val = 4 | BNX2_RPM_SORT_USER2_BC_EN;
if (CHIP_NUM(cp) != CHIP_NUM_5709)
val |= BNX2_RPM_SORT_USER2_PROM_VLAN;
CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0);
CNIC_WR(dev, BNX2_RPM_SORT_USER2, val);
CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA);
}
static int cnic_start_bnx2_hw(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
struct cnic_eth_dev *ethdev = cp->ethdev;
struct status_block *sblk = cp->status_blk.gen;
u32 val;
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);
cp->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, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val);
val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16;
cnic_ctx_wr(dev, cp->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, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32);
cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
val = (u32) cp->kwq_info.pgtbl_map;
cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID);
cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX;
cp->kcq_prod_idx = 0;
/* 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, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val);
val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16;
cnic_ctx_wr(dev, cp->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, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val);
val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32);
cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val);
val = (u32) cp->kcq_info.pgtbl_map;
cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val);
cp->int_num = 0;
if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) {
u32 sb_id = cp->status_blk_num;
u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id);
cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT;
cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb);
cnic_ctx_wr(dev, cp->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 = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0,
"cnic", dev);
if (err)
tasklet_disable(&cp->cnic_irq_task);
}
return err;
}
static void cnic_enable_bnx2x_int(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
u8 sb_id = cp->status_blk_num;
int port = CNIC_PORT(cp);
CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
CSTORM_SB_HC_TIMEOUT_C_OFFSET(port, sb_id,
HC_INDEX_C_ISCSI_EQ_CONS),
64 / 12);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
CSTORM_SB_HC_DISABLE_C_OFFSET(port, sb_id,
HC_INDEX_C_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 cnic_local *cp = dev->cnic_priv;
union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) cp->l2_ring;
struct eth_context *context;
struct regpair context_addr;
dma_addr_t buf_map;
int func = CNIC_FUNC(cp);
int port = CNIC_PORT(cp);
int i;
int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
u32 val;
memset(txbd, 0, BCM_PAGE_SIZE);
buf_map = cp->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_bd *reg_bd = &((txbd + 2)->reg_bd);
start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32);
start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff);
reg_bd->addr_hi = start_bd->addr_hi;
reg_bd->addr_lo = start_bd->addr_lo + 0x10;
start_bd->nbytes = cpu_to_le16(0x10);
start_bd->nbd = cpu_to_le16(3);
start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
start_bd->general_data = (UNICAST_ADDRESS <<
ETH_TX_START_BD_ETH_ADDR_TYPE_SHIFT);
start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT);
}
context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 1, &context_addr);
val = (u64) cp->l2_ring_map >> 32;
txbd->next_bd.addr_hi = cpu_to_le32(val);
context->xstorm_st_context.tx_bd_page_base_hi = val;
val = (u64) cp->l2_ring_map & 0xffffffff;
txbd->next_bd.addr_lo = cpu_to_le32(val);
context->xstorm_st_context.tx_bd_page_base_lo = val;
context->cstorm_st_context.sb_index_number =
HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS;
context->cstorm_st_context.status_block_id = BNX2X_DEF_SB_ID;
context->xstorm_st_context.statistics_data = (cli |
XSTORM_ETH_ST_CONTEXT_STATISTICS_ENABLE);
context->xstorm_ag_context.cdu_reserved =
CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
CDU_REGION_NUMBER_XCM_AG,
ETH_CONNECTION_TYPE);
/* reset xstorm per client statistics */
val = BAR_XSTRORM_INTMEM +
XSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
for (i = 0; i < sizeof(struct xstorm_per_client_stats) / 4; i++)
CNIC_WR(dev, val + i * 4, 0);
cp->tx_cons_ptr =
&cp->bnx2x_def_status_blk->c_def_status_block.index_values[
HC_INDEX_DEF_C_ETH_ISCSI_CQ_CONS];
}
static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (cp->l2_ring +
BCM_PAGE_SIZE);
struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *)
(cp->l2_ring + (2 * BCM_PAGE_SIZE));
struct eth_context *context;
struct regpair context_addr;
int i;
int port = CNIC_PORT(cp);
int func = CNIC_FUNC(cp);
int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
u32 val;
struct tstorm_eth_client_config tstorm_client = {0};
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 = cp->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);
}
context = cnic_get_bnx2x_ctx(dev, BNX2X_ISCSI_L2_CID, 0, &context_addr);
val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32;
rxbd->addr_hi = cpu_to_le32(val);
context->ustorm_st_context.common.bd_page_base_hi = val;
val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff;
rxbd->addr_lo = cpu_to_le32(val);
context->ustorm_st_context.common.bd_page_base_lo = val;
context->ustorm_st_context.common.sb_index_numbers =
BNX2X_ISCSI_RX_SB_INDEX_NUM;
context->ustorm_st_context.common.clientId = cli;
context->ustorm_st_context.common.status_block_id = BNX2X_DEF_SB_ID;
context->ustorm_st_context.common.flags =
USTORM_ETH_ST_CONTEXT_CONFIG_ENABLE_STATISTICS;
context->ustorm_st_context.common.statistics_counter_id = cli;
context->ustorm_st_context.common.mc_alignment_log_size = 0;
context->ustorm_st_context.common.bd_buff_size =
cp->l2_single_buf_size;
context->ustorm_ag_context.cdu_usage =
CDU_RSRVD_VALUE_TYPE_A(BNX2X_HW_CID(BNX2X_ISCSI_L2_CID, func),
CDU_REGION_NUMBER_UCM_AG,
ETH_CONNECTION_TYPE);
rxcqe += BNX2X_MAX_RCQ_DESC_CNT;
val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) >> 32;
rxcqe->addr_hi = cpu_to_le32(val);
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_CQE_PAGE_BASE_OFFSET(port, cli) + 4, val);
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_CQE_PAGE_NEXT_OFFSET(port, cli) + 4, val);
val = (u64) (cp->l2_ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff;
rxcqe->addr_lo = cpu_to_le32(val);
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_CQE_PAGE_BASE_OFFSET(port, cli), val);
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_CQE_PAGE_NEXT_OFFSET(port, cli), val);
/* client tstorm info */
tstorm_client.mtu = cp->l2_single_buf_size - 14;
tstorm_client.config_flags =
(TSTORM_ETH_CLIENT_CONFIG_E1HOV_REM_ENABLE |
TSTORM_ETH_CLIENT_CONFIG_STATSITICS_ENABLE);
tstorm_client.statistics_counter_id = cli;
CNIC_WR(dev, BAR_TSTRORM_INTMEM +
TSTORM_CLIENT_CONFIG_OFFSET(port, cli),
((u32 *)&tstorm_client)[0]);
CNIC_WR(dev, BAR_TSTRORM_INTMEM +
TSTORM_CLIENT_CONFIG_OFFSET(port, cli) + 4,
((u32 *)&tstorm_client)[1]);
/* reset tstorm per client statistics */
val = BAR_TSTRORM_INTMEM +
TSTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
for (i = 0; i < sizeof(struct tstorm_per_client_stats) / 4; i++)
CNIC_WR(dev, val + i * 4, 0);
/* reset ustorm per client statistics */
val = BAR_USTRORM_INTMEM +
USTORM_PER_COUNTER_ID_STATS_OFFSET(port, cli);
for (i = 0; i < sizeof(struct ustorm_per_client_stats) / 4; i++)
CNIC_WR(dev, val + i * 4, 0);
cp->rx_cons_ptr =
&cp->bnx2x_def_status_blk->u_def_status_block.index_values[
HC_INDEX_DEF_U_ETH_ISCSI_RX_CQ_CONS];
}
static void cnic_get_bnx2x_iscsi_info(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
u32 base, addr, val;
int port = CNIC_PORT(cp);
dev->max_iscsi_conn = 0;
base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR);
if (base < 0xa0000 || base >= 0xc0000)
return;
addr = BNX2X_SHMEM_ADDR(base,
dev_info.port_hw_config[port].iscsi_mac_upper);
val = CNIC_RD(dev, addr);
dev->mac_addr[0] = (u8) (val >> 8);
dev->mac_addr[1] = (u8) val;
addr = BNX2X_SHMEM_ADDR(base,
dev_info.port_hw_config[port].iscsi_mac_lower);
val = CNIC_RD(dev, addr);
dev->mac_addr[2] = (u8) (val >> 24);
dev->mac_addr[3] = (u8) (val >> 16);
dev->mac_addr[4] = (u8) (val >> 8);
dev->mac_addr[5] = (u8) val;
addr = BNX2X_SHMEM_ADDR(base, validity_map[port]);
val = CNIC_RD(dev, addr);
if (!(val & SHR_MEM_VALIDITY_LIC_NO_KEY_IN_EFFECT)) {
u16 val16;
addr = BNX2X_SHMEM_ADDR(base,
drv_lic_key[port].max_iscsi_init_conn);
val16 = CNIC_RD16(dev, addr);
if (val16)
val16 ^= 0x1e1e;
dev->max_iscsi_conn = val16;
}
if (BNX2X_CHIP_IS_E1H(cp->chip_id)) {
int func = CNIC_FUNC(cp);
addr = BNX2X_SHMEM_ADDR(base,
mf_cfg.func_mf_config[func].e1hov_tag);
val = CNIC_RD(dev, addr);
val &= FUNC_MF_CFG_E1HOV_TAG_MASK;
if (val != FUNC_MF_CFG_E1HOV_TAG_DEFAULT) {
addr = BNX2X_SHMEM_ADDR(base,
mf_cfg.func_mf_config[func].config);
val = CNIC_RD(dev, addr);
val &= FUNC_MF_CFG_PROTOCOL_MASK;
if (val != FUNC_MF_CFG_PROTOCOL_ISCSI)
dev->max_iscsi_conn = 0;
}
}
}
static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
int func = CNIC_FUNC(cp), ret, i;
int port = CNIC_PORT(cp);
u16 eq_idx;
u8 sb_id = cp->status_blk_num;
ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ,
BNX2X_ISCSI_START_CID);
if (ret)
return -ENOMEM;
cp->kcq_io_addr = BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_PROD_OFFSET(func, 0);
cp->kcq_prod_idx = 0;
cnic_get_bnx2x_iscsi_info(dev);
/* Only 1 EQ */
CNIC_WR16(dev, cp->kcq_io_addr, MAX_KCQ_IDX);
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_CONS_OFFSET(func, 0), 0);
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0),
cp->kcq_info.pg_map_arr[1] & 0xffffffff);
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(func, 0) + 4,
(u64) cp->kcq_info.pg_map_arr[1] >> 32);
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0),
cp->kcq_info.pg_map_arr[0] & 0xffffffff);
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(func, 0) + 4,
(u64) cp->kcq_info.pg_map_arr[0] >> 32);
CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(func, 0), 1);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_SB_NUM_OFFSET(func, 0), cp->status_blk_num);
CNIC_WR8(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(func, 0),
HC_INDEX_C_ISCSI_EQ_CONS);
for (i = 0; i < cp->conn_buf_info.num_pages; i++) {
CNIC_WR(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i),
cp->conn_buf_info.pgtbl[2 * i]);
CNIC_WR(dev, BAR_TSTRORM_INTMEM +
TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(func, i) + 4,
cp->conn_buf_info.pgtbl[(2 * i) + 1]);
}
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func),
cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff);
CNIC_WR(dev, BAR_USTRORM_INTMEM +
USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(func) + 4,
(u64) cp->gbl_buf_info.pg_map_arr[0] >> 32);
cnic_setup_bnx2x_context(dev);
eq_idx = CNIC_RD16(dev, BAR_CSTRORM_INTMEM +
CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
offsetof(struct cstorm_status_block_c,
index_values[HC_INDEX_C_ISCSI_EQ_CONS]));
if (eq_idx != 0) {
netdev_err(dev->netdev, "EQ cons index %x != 0\n", eq_idx);
return -EBUSY;
}
ret = cnic_init_bnx2x_irq(dev);
if (ret)
return ret;
cnic_init_bnx2x_tx_ring(dev);
cnic_init_bnx2x_rx_ring(dev);
return 0;
}
static void cnic_init_rings(struct cnic_dev *dev)
{
if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
cnic_init_bnx2_tx_ring(dev);
cnic_init_bnx2_rx_ring(dev);
} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
struct cnic_local *cp = dev->cnic_priv;
u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
union l5cm_specific_data l5_data;
struct ustorm_eth_rx_producers rx_prods = {0};
u32 off, i;
rx_prods.bd_prod = 0;
rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT;
barrier();
off = BAR_USTRORM_INTMEM +
USTORM_RX_PRODS_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);
cnic_init_bnx2x_tx_ring(dev);
cnic_init_bnx2x_rx_ring(dev);
l5_data.phy_address.lo = cli;
l5_data.phy_address.hi = 0;
cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
BNX2X_ISCSI_L2_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_kwq_completion(dev, 1);
cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1);
}
}
static void cnic_shutdown_rings(struct cnic_dev *dev)
{
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)) {
struct cnic_local *cp = dev->cnic_priv;
u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
union l5cm_specific_data l5_data;
int i;
cnic_ring_ctl(dev, BNX2X_ISCSI_L2_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,
BNX2X_ISCSI_L2_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_kwq_completion(dev, 1);
memset(&l5_data, 0, sizeof(l5_data));
cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CFC_DEL,
BNX2X_ISCSI_L2_CID, ETH_CONNECTION_TYPE |
(1 << SPE_HDR_COMMON_RAMROD_SHIFT), &l5_data);
msleep(10);
}
}
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;
cp->chip_id = ethdev->chip_id;
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;
u8 sb_id = cp->status_blk_num;
int port = CNIC_PORT(cp);
cnic_free_irq(dev);
CNIC_WR16(dev, BAR_CSTRORM_INTMEM +
CSTORM_SB_HOST_STATUS_BLOCK_C_OFFSET(port, sb_id) +
offsetof(struct cstorm_status_block_c,
index_values[HC_INDEX_C_ISCSI_EQ_CONS]),
0);
CNIC_WR(dev, BAR_CSTRORM_INTMEM +
CSTORM_ISCSI_EQ_CONS_OFFSET(cp->func, 0), 0);
CNIC_WR16(dev, cp->kcq_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->uio_dev != -1 && i < 15) {
msleep(100);
i++;
}
clear_bit(CNIC_F_CNIC_UP, &dev->flags);
rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
synchronize_rcu();
cnic_cm_shutdown(dev);
cp->stop_hw(dev);
pci_dev_put(dev->pcidev);
}
}
static void cnic_free_dev(struct cnic_dev *dev)
{
int i = 0;
while ((atomic_read(&dev->ref_count) != 0) && i < 10) {
msleep(100);
i++;
}
if (atomic_read(&dev->ref_count) != 0)
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->uio_dev = -1;
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) {
u8 rev;
pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
if (rev < 0x10) {
pci_dev_put(pdev);
goto cnic_err;
}
}
pci_dev_put(pdev);
cdev = cnic_alloc_dev(dev, pdev);
if (cdev == NULL)
goto cnic_err;
set_bit(CNIC_F_BNX2_CLASS, &cdev->flags);
cdev->submit_kwqes = cnic_submit_bnx2_kwqes;
cp = cdev->cnic_priv;
cp->ethdev = ethdev;
cdev->pcidev = pdev;
cp->cnic_ops = &cnic_bnx2_ops;
cp->start_hw = cnic_start_bnx2_hw;
cp->stop_hw = cnic_stop_bnx2_hw;
cp->setup_pgtbl = cnic_setup_page_tbl;
cp->alloc_resc = cnic_alloc_bnx2_resc;
cp->free_resc = cnic_free_resc;
cp->start_cm = cnic_cm_init_bnx2_hw;
cp->stop_cm = cnic_cm_stop_bnx2_hw;
cp->enable_int = cnic_enable_bnx2_int;
cp->disable_int_sync = cnic_disable_bnx2_int_sync;
cp->close_conn = cnic_close_bnx2_conn;
cp->next_idx = cnic_bnx2_next_idx;
cp->hw_idx = cnic_bnx2_hw_idx;
return cdev;
cnic_err:
dev_put(dev);
return NULL;
}
static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
{
struct pci_dev *pdev;
struct cnic_dev *cdev;
struct cnic_local *cp;
struct cnic_eth_dev *ethdev = NULL;
struct cnic_eth_dev *(*probe)(struct net_device *) = NULL;
probe = symbol_get(bnx2x_cnic_probe);
if (probe) {
ethdev = (*probe)(dev);
symbol_put(bnx2x_cnic_probe);
}
if (!ethdev)
return NULL;
pdev = ethdev->pdev;
if (!pdev)
return NULL;
dev_hold(dev);
cdev = cnic_alloc_dev(dev, pdev);
if (cdev == NULL) {
dev_put(dev);
return NULL;
}
set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags);
cdev->submit_kwqes = cnic_submit_bnx2x_kwqes;
cp = cdev->cnic_priv;
cp->ethdev = ethdev;
cdev->pcidev = pdev;
cp->cnic_ops = &cnic_bnx2x_ops;
cp->start_hw = cnic_start_bnx2x_hw;
cp->stop_hw = cnic_stop_bnx2x_hw;
cp->setup_pgtbl = cnic_setup_page_tbl_le;
cp->alloc_resc = cnic_alloc_bnx2x_resc;
cp->free_resc = cnic_free_resc;
cp->start_cm = cnic_cm_init_bnx2x_hw;
cp->stop_cm = cnic_cm_stop_bnx2x_hw;
cp->enable_int = cnic_enable_bnx2x_int;
cp->disable_int_sync = cnic_disable_bnx2x_int_sync;
cp->ack_int = cnic_ack_bnx2x_msix;
cp->close_conn = cnic_close_bnx2x_conn;
cp->next_idx = cnic_bnx2x_next_idx;
cp->hw_idx = cnic_bnx2x_hw_idx;
return cdev;
}
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;
}
/**
* netdev event handler
*/
static int cnic_netdev_event(struct notifier_block *this, unsigned long event,
void *ptr)
{
struct net_device *netdev = ptr;
struct cnic_dev *dev;
int if_type;
int new_dev = 0;
dev = cnic_from_netdev(netdev);
if (!dev && (event == NETDEV_REGISTER || event == NETDEV_UP)) {
/* Check for the hot-plug device */
dev = is_cnic_dev(netdev);
if (dev) {
new_dev = 1;
cnic_hold(dev);
}
}
if (dev) {
struct cnic_local *cp = dev->cnic_priv;
if (new_dev)
cnic_ulp_init(dev);
else if (event == NETDEV_UNREGISTER)
cnic_ulp_exit(dev);
if (event == NETDEV_UP) {
if (cnic_register_netdev(dev) != 0) {
cnic_put(dev);
goto done;
}
if (!cnic_start_hw(dev))
cnic_ulp_start(dev);
}
rcu_read_lock();
for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
struct cnic_ulp_ops *ulp_ops;
void *ctx;
ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
if (!ulp_ops || !ulp_ops->indicate_netevent)
continue;
ctx = cp->ulp_handle[if_type];
ulp_ops->indicate_netevent(ctx, event);
}
rcu_read_unlock();
if (event == NETDEV_GOING_DOWN) {
cnic_ulp_stop(dev);
cnic_stop_hw(dev);
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);
}
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;
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);
}
}
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;
}
return 0;
}
static void __exit cnic_exit(void)
{
unregister_netdevice_notifier(&cnic_netdev_notifier);
cnic_release();
}
module_init(cnic_init);
module_exit(cnic_exit);
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