diff options
Diffstat (limited to 'drivers/net/cnic.c')
| -rw-r--r-- | drivers/net/cnic.c | 4974 |
1 files changed, 0 insertions, 4974 deletions
diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c deleted file mode 100644 index 594ca9c2c10..00000000000 --- a/drivers/net/cnic.c +++ /dev/null @@ -1,4974 +0,0 @@ -/* 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/bnx2x_reg.h" -#include "bnx2x/bnx2x_fw_defs.h" -#include "bnx2x/bnx2x_hsi.h" -#include "../scsi/bnx2i/57xx_iscsi_constants.h" -#include "../scsi/bnx2i/57xx_iscsi_hsi.h" -#include "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 LIST_HEAD(cnic_udev_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 struct workqueue_struct *cnic_wq; - -static void cnic_shutdown_rings(struct cnic_dev *); -static void cnic_init_rings(struct cnic_dev *); -static int cnic_cm_set_pg(struct cnic_sock *); - -static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode) -{ - struct cnic_uio_dev *udev = uinfo->priv; - struct cnic_dev *dev; - - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - - if (udev->uio_dev != -1) - return -EBUSY; - - rtnl_lock(); - dev = udev->dev; - - if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) { - rtnl_unlock(); - return -ENODEV; - } - - udev->uio_dev = iminor(inode); - - cnic_shutdown_rings(dev); - cnic_init_rings(dev); - rtnl_unlock(); - - return 0; -} - -static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode) -{ - struct cnic_uio_dev *udev = uinfo->priv; - - udev->uio_dev = -1; - return 0; -} - -static inline void cnic_hold(struct cnic_dev *dev) -{ - atomic_inc(&dev->ref_count); -} - -static inline void cnic_put(struct cnic_dev *dev) -{ - atomic_dec(&dev->ref_count); -} - -static inline void csk_hold(struct cnic_sock *csk) -{ - atomic_inc(&csk->ref_count); -} - -static inline void csk_put(struct cnic_sock *csk) -{ - atomic_dec(&csk->ref_count); -} - -static struct cnic_dev *cnic_from_netdev(struct net_device *netdev) -{ - struct cnic_dev *cdev; - - read_lock(&cnic_dev_lock); - list_for_each_entry(cdev, &cnic_dev_list, list) { - if (netdev == cdev->netdev) { - cnic_hold(cdev); - read_unlock(&cnic_dev_lock); - return cdev; - } - } - read_unlock(&cnic_dev_lock); - return NULL; -} - -static inline void ulp_get(struct cnic_ulp_ops *ulp_ops) -{ - atomic_inc(&ulp_ops->ref_count); -} - -static inline void ulp_put(struct cnic_ulp_ops *ulp_ops) -{ - atomic_dec(&ulp_ops->ref_count); -} - -static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct drv_ctl_info info; - struct drv_ctl_io *io = &info.data.io; - - info.cmd = DRV_CTL_CTX_WR_CMD; - io->cid_addr = cid_addr; - io->offset = off; - io->data = val; - ethdev->drv_ctl(dev->netdev, &info); -} - -static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct drv_ctl_info info; - struct drv_ctl_io *io = &info.data.io; - - info.cmd = DRV_CTL_CTXTBL_WR_CMD; - io->offset = off; - io->dma_addr = addr; - ethdev->drv_ctl(dev->netdev, &info); -} - -static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct drv_ctl_info info; - struct drv_ctl_l2_ring *ring = &info.data.ring; - - if (start) - info.cmd = DRV_CTL_START_L2_CMD; - else - info.cmd = DRV_CTL_STOP_L2_CMD; - - ring->cid = cid; - ring->client_id = cl_id; - ethdev->drv_ctl(dev->netdev, &info); -} - -static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct drv_ctl_info info; - struct drv_ctl_io *io = &info.data.io; - - info.cmd = DRV_CTL_IO_WR_CMD; - io->offset = off; - io->data = val; - ethdev->drv_ctl(dev->netdev, &info); -} - -static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct drv_ctl_info info; - struct drv_ctl_io *io = &info.data.io; - - info.cmd = DRV_CTL_IO_RD_CMD; - io->offset = off; - ethdev->drv_ctl(dev->netdev, &info); - return io->data; -} - -static int cnic_in_use(struct cnic_sock *csk) -{ - return test_bit(SK_F_INUSE, &csk->flags); -} - -static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct drv_ctl_info info; - - info.cmd = cmd; - info.data.credit.credit_count = count; - ethdev->drv_ctl(dev->netdev, &info); -} - -static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid) -{ - u32 i; - - for (i = 0; i < cp->max_cid_space; i++) { - if (cp->ctx_tbl[i].cid == cid) { - *l5_cid = i; - return 0; - } - } - return -EINVAL; -} - -static int cnic_send_nlmsg(struct cnic_local *cp, u32 type, - struct cnic_sock *csk) -{ - struct iscsi_path path_req; - char *buf = NULL; - u16 len = 0; - u32 msg_type = ISCSI_KEVENT_IF_DOWN; - struct cnic_ulp_ops *ulp_ops; - struct cnic_uio_dev *udev = cp->udev; - - if (!udev || udev->uio_dev == -1) - return -ENODEV; - - if (csk) { - len = sizeof(path_req); - buf = (char *) &path_req; - memset(&path_req, 0, len); - - msg_type = ISCSI_KEVENT_PATH_REQ; - path_req.handle = (u64) csk->l5_cid; - if (test_bit(SK_F_IPV6, &csk->flags)) { - memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0], - sizeof(struct in6_addr)); - path_req.ip_addr_len = 16; - } else { - memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0], - sizeof(struct in_addr)); - path_req.ip_addr_len = 4; - } - path_req.vlan_id = csk->vlan_id; - path_req.pmtu = csk->mtu; - } - - 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; - - 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_uio(struct cnic_uio_dev *udev) -{ - uio_unregister_device(&udev->cnic_uinfo); - - if (udev->l2_buf) { - dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size, - udev->l2_buf, udev->l2_buf_map); - udev->l2_buf = NULL; - } - - if (udev->l2_ring) { - dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size, - udev->l2_ring, udev->l2_ring_map); - udev->l2_ring = NULL; - } - - pci_dev_put(udev->pdev); - kfree(udev); -} - -static void cnic_free_uio(struct cnic_uio_dev *udev) -{ - if (!udev) - return; - - write_lock(&cnic_dev_lock); - list_del_init(&udev->list); - write_unlock(&cnic_dev_lock); - __cnic_free_uio(udev); -} - -static void cnic_free_resc(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_uio_dev *udev = cp->udev; - - if (udev) { - udev->dev = NULL; - cp->udev = NULL; - } - - 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->kcq1.dma); - 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_kcq(struct cnic_dev *dev, struct kcq_info *info) -{ - int err, i, is_bnx2 = 0; - struct kcqe **kcq; - - if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) - is_bnx2 = 1; - - err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, is_bnx2); - if (err) - return err; - - kcq = (struct kcqe **) info->dma.pg_arr; - info->kcq = kcq; - - if (is_bnx2) - return 0; - - for (i = 0; i < KCQ_PAGE_CNT; i++) { - struct bnx2x_bd_chain_next *next = - (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT]; - int j = i + 1; - - if (j >= KCQ_PAGE_CNT) - j = 0; - next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32; - next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff; - } - return 0; -} - -static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_uio_dev *udev; - - read_lock(&cnic_dev_lock); - list_for_each_entry(udev, &cnic_udev_list, list) { - if (udev->pdev == dev->pcidev) { - udev->dev = dev; - cp->udev = udev; - read_unlock(&cnic_dev_lock); - return 0; - } - } - read_unlock(&cnic_dev_lock); - - udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC); - if (!udev) - return -ENOMEM; - - udev->uio_dev = -1; - - udev->dev = dev; - udev->pdev = dev->pcidev; - udev->l2_ring_size = pages * BCM_PAGE_SIZE; - udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size, - &udev->l2_ring_map, - GFP_KERNEL | __GFP_COMP); - if (!udev->l2_ring) - return -ENOMEM; - - udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size; - udev->l2_buf_size = PAGE_ALIGN(udev->l2_buf_size); - udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size, - &udev->l2_buf_map, - GFP_KERNEL | __GFP_COMP); - if (!udev->l2_buf) - return -ENOMEM; - - write_lock(&cnic_dev_lock); - list_add(&udev->list, &cnic_udev_list); - write_unlock(&cnic_dev_lock); - - pci_dev_get(udev->pdev); - - cp->udev = udev; - - return 0; -} - -static int cnic_init_uio(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_uio_dev *udev = cp->udev; - struct uio_info *uinfo; - int ret = 0; - - if (!udev) - return -ENOMEM; - - uinfo = &udev->cnic_uinfo; - - uinfo->mem[0].addr = 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(*cp->bnx2x_def_status_blk); - - uinfo->name = "bnx2x_cnic"; - } - - uinfo->mem[1].memtype = UIO_MEM_LOGICAL; - - uinfo->mem[2].addr = (unsigned long) udev->l2_ring; - uinfo->mem[2].size = udev->l2_ring_size; - uinfo->mem[2].memtype = UIO_MEM_LOGICAL; - - uinfo->mem[3].addr = (unsigned long) udev->l2_buf; - uinfo->mem[3].size = udev->l2_buf_size; - uinfo->mem[3].memtype = UIO_MEM_LOGICAL; - - uinfo->version = CNIC_MODULE_VERSION; - uinfo->irq = UIO_IRQ_CUSTOM; - - uinfo->open = cnic_uio_open; - uinfo->release = cnic_uio_close; - - if (udev->uio_dev == -1) { - if (!uinfo->priv) { - uinfo->priv = udev; - - ret = uio_register_device(&udev->pdev->dev, uinfo); - } - } else { - cnic_init_rings(dev); - } - - return ret; -} - -static int cnic_alloc_bnx2_resc(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - int ret; - - ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1); - if (ret) - goto error; - cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr; - - ret = cnic_alloc_kcq(dev, &cp->kcq1); - if (ret) - goto error; - - ret = cnic_alloc_context(dev); - if (ret) - goto error; - - ret = cnic_alloc_uio_rings(dev, 2); - if (ret) - goto error; - - ret = cnic_init_uio(dev); - if (ret) - goto error; - - return 0; - -error: - cnic_free_resc(dev); - return ret; -} - -static int cnic_alloc_bnx2x_context(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - int ctx_blk_size = cp->ethdev->ctx_blk_size; - int total_mem, blks, i; - - total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space; - blks = total_mem / ctx_blk_size; - if (total_mem % ctx_blk_size) - blks++; - - if (blks > cp->ethdev->ctx_tbl_len) - return -ENOMEM; - - cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL); - if (cp->ctx_arr == NULL) - return -ENOMEM; - - cp->ctx_blks = blks; - cp->ctx_blk_size = ctx_blk_size; - if (!BNX2X_CHIP_IS_57710(cp->chip_id)) - cp->ctx_align = 0; - else - cp->ctx_align = ctx_blk_size; - - cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE; - - for (i = 0; i < blks; i++) { - cp->ctx_arr[i].ctx = - dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size, - &cp->ctx_arr[i].mapping, - GFP_KERNEL); - if (cp->ctx_arr[i].ctx == NULL) - return -ENOMEM; - - if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) { - if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) { - cnic_free_context(dev); - cp->ctx_blk_size += cp->ctx_align; - i = -1; - continue; - } - } - } - return 0; -} - -static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - u32 start_cid = ethdev->starting_cid; - int i, j, n, ret, pages; - struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info; - - cp->iro_arr = ethdev->iro_arr; - - cp->max_cid_space = MAX_ISCSI_TBL_SZ; - cp->iscsi_start_cid = start_cid; - if (start_cid < BNX2X_ISCSI_START_CID) { - u32 delta = BNX2X_ISCSI_START_CID - start_cid; - - cp->iscsi_start_cid = BNX2X_ISCSI_START_CID; - cp->max_cid_space += delta; - } - - cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ, - GFP_KERNEL); - if (!cp->iscsi_tbl) - goto error; - - cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) * - cp->max_cid_space, GFP_KERNEL); - if (!cp->ctx_tbl) - goto error; - - for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) { - cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i]; - cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI; - } - - pages = PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) / - PAGE_SIZE; - - ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0); - if (ret) - return -ENOMEM; - - n = PAGE_SIZE / CNIC_KWQ16_DATA_SIZE; - for (i = 0, j = 0; i < cp->max_cid_space; i++) { - long off = CNIC_KWQ16_DATA_SIZE * (i % n); - - cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off; - cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] + - off; - - if ((i % n) == (n - 1)) - j++; - } - - ret = cnic_alloc_kcq(dev, &cp->kcq1); - if (ret) - goto error; - - pages = PAGE_ALIGN(BNX2X_ISCSI_NUM_CONNECTIONS * - BNX2X_ISCSI_CONN_BUF_SIZE) / PAGE_SIZE; - ret = cnic_alloc_dma(dev, &cp->conn_buf_info, pages, 1); - if (ret) - goto error; - - pages = PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / PAGE_SIZE; - ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0); - if (ret) - goto error; - - ret = cnic_alloc_bnx2x_context(dev); - if (ret) - goto error; - - cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk; - - cp->l2_rx_ring_size = 15; - - ret = cnic_alloc_uio_rings(dev, 4); - if (ret) - goto error; - - ret = cnic_init_uio(dev); - if (ret) - goto error; - - return 0; - -error: - cnic_free_resc(dev); - return -ENOMEM; -} - -static inline u32 cnic_kwq_avail(struct cnic_local *cp) -{ - return cp->max_kwq_idx - - ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx); -} - -static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], - u32 num_wqes) -{ - struct cnic_local *cp = dev->cnic_priv; - struct kwqe *prod_qe; - u16 prod, sw_prod, i; - - if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) - return -EAGAIN; /* bnx2 is down */ - - spin_lock_bh(&cp->cnic_ulp_lock); - if (num_wqes > cnic_kwq_avail(cp) && - !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) { - spin_unlock_bh(&cp->cnic_ulp_lock); - return -EAGAIN; - } - - clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags); - - prod = cp->kwq_prod_idx; - sw_prod = prod & MAX_KWQ_IDX; - for (i = 0; i < num_wqes; i++) { - prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)]; - memcpy(prod_qe, wqes[i], sizeof(struct kwqe)); - prod++; - sw_prod = prod & MAX_KWQ_IDX; - } - cp->kwq_prod_idx = prod; - - CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx); - - spin_unlock_bh(&cp->cnic_ulp_lock); - return 0; -} - -static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid, - union l5cm_specific_data *l5_data) -{ - struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; - dma_addr_t map; - - map = ctx->kwqe_data_mapping; - l5_data->phy_address.lo = (u64) map & 0xffffffff; - l5_data->phy_address.hi = (u64) map >> 32; - return ctx->kwqe_data; -} - -static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid, - u32 type, union l5cm_specific_data *l5_data) -{ - struct cnic_local *cp = dev->cnic_priv; - struct l5cm_spe kwqe; - struct kwqe_16 *kwq[1]; - int ret; - - kwqe.hdr.conn_and_cmd_data = - cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) | - BNX2X_HW_CID(cp, cid))); - kwqe.hdr.type = cpu_to_le16(type); - kwqe.hdr.reserved1 = 0; - kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo); - kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi); - - kwq[0] = (struct kwqe_16 *) &kwqe; - - spin_lock_bh(&cp->cnic_ulp_lock); - ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1); - spin_unlock_bh(&cp->cnic_ulp_lock); - - if (ret == 1) - return 0; - - return -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 hq_bds, pages; - u32 pfid = cp->pfid; - - cp->num_iscsi_tasks = req1->num_tasks_per_conn; - cp->num_ccells = req1->num_ccells_per_conn; - cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE * - cp->num_iscsi_tasks; - cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS * - BNX2X_ISCSI_R2TQE_SIZE; - cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE; - pages = PAGE_ALIGN(cp->hq_size) / PAGE_SIZE; - hq_bds = pages * (PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE); - cp->num_cqs = req1->num_cqs; - - if (!dev->max_iscsi_conn) - return 0; - - /* init Tstorm RAM */ - CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid), - req1->rq_num_wqes); - CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid), - PAGE_SIZE); - CNIC_WR8(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT); - CNIC_WR16(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid), - req1->num_tasks_per_conn); - - /* init Ustorm RAM */ - CNIC_WR16(dev, BAR_USTRORM_INTMEM + - USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid), - req1->rq_buffer_size); - CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid), - PAGE_SIZE); - CNIC_WR8(dev, BAR_USTRORM_INTMEM + - USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT); - CNIC_WR16(dev, BAR_USTRORM_INTMEM + - USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid), - req1->num_tasks_per_conn); - CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid), - req1->rq_num_wqes); - CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid), - req1->cq_num_wqes); - CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid), - cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS); - - /* init Xstorm RAM */ - CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid), - PAGE_SIZE); - CNIC_WR8(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT); - CNIC_WR16(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid), - req1->num_tasks_per_conn); - CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid), - hq_bds); - CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid), - req1->num_tasks_per_conn); - CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid), - cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS); - - /* init Cstorm RAM */ - CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid), - PAGE_SIZE); - CNIC_WR8(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), PAGE_SHIFT); - CNIC_WR16(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid), - req1->num_tasks_per_conn); - CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid), - req1->cq_num_wqes); - CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid), - hq_bds); - - return 0; -} - -static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe) -{ - struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe; - struct cnic_local *cp = dev->cnic_priv; - u32 pfid = cp->pfid; - struct iscsi_kcqe kcqe; - struct kcqe *cqes[1]; - - memset(&kcqe, 0, sizeof(kcqe)); - if (!dev->max_iscsi_conn) { - kcqe.completion_status = - ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED; - goto done; - } - - CNIC_WR(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]); - CNIC_WR(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4, - req2->error_bit_map[1]); - - CNIC_WR16(dev, BAR_USTRORM_INTMEM + - USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn); - CNIC_WR(dev, BAR_USTRORM_INTMEM + - USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]); - CNIC_WR(dev, BAR_USTRORM_INTMEM + - USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4, - req2->error_bit_map[1]); - - CNIC_WR16(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn); - - kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; - -done: - kcqe.op_code = ISCSI_KCQE_OPCODE_INIT; - cqes[0] = (struct kcqe *) &kcqe; - cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); - - return 0; -} - -static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; - - if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) { - struct cnic_iscsi *iscsi = ctx->proto.iscsi; - - cnic_free_dma(dev, &iscsi->hq_info); - cnic_free_dma(dev, &iscsi->r2tq_info); - cnic_free_dma(dev, &iscsi->task_array_info); - } - cnic_free_id(&cp->cid_tbl, ctx->cid); - 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(cp, cid); - 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->tstorm_st_context.tcp.ooo_support_mode = - TCP_TSTORM_OOO_DROP_AND_PROC_ACK; - - ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG; - - ictx->ustorm_st_context.ring.rq.pbl_base.lo = - req2->rq_page_table_addr_lo; - ictx->ustorm_st_context.ring.rq.pbl_base.hi = - req2->rq_page_table_addr_hi; - ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi; - ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo; - ictx->ustorm_st_context.ring.r2tq.pbl_base.lo = - iscsi->r2tq_info.pgtbl_map & 0xffffffff; - ictx->ustorm_st_context.ring.r2tq.pbl_base.hi = - (u64) iscsi->r2tq_info.pgtbl_map >> 32; - ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo = - iscsi->r2tq_info.pgtbl[0]; - ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi = - iscsi->r2tq_info.pgtbl[1]; - ictx->ustorm_st_context.ring.cq_pbl_base.lo = - req1->cq_page_table_addr_lo; - ictx->ustorm_st_context.ring.cq_pbl_base.hi = - req1->cq_page_table_addr_hi; - ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN; - ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi; - ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo; - ictx->ustorm_st_context.task_pbe_cache_index = - BNX2X_ISCSI_PBL_NOT_CACHED; - ictx->ustorm_st_context.task_pdu_cache_index = - BNX2X_ISCSI_PDU_HEADER_NOT_CACHED; - - for (i = 1, j = 1; i < cp->num_cqs; i++, j++) { - if (j == 3) { - if (n >= n_max) - break; - req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++]; - j = 0; - } - ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN; - ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo = - req3->qp_first_pte[j].hi; - ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi = - req3->qp_first_pte[j].lo; - } - - ictx->ustorm_st_context.task_pbl_base.lo = - iscsi->task_array_info.pgtbl_map & 0xffffffff; - ictx->ustorm_st_context.task_pbl_base.hi = - (u64) iscsi->task_array_info.pgtbl_map >> 32; - ictx->ustorm_st_context.tce_phy_addr.lo = - iscsi->task_array_info.pgtbl[0]; - ictx->ustorm_st_context.tce_phy_addr.hi = - iscsi->task_array_info.pgtbl[1]; - ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id; - ictx->ustorm_st_context.num_cqs = cp->num_cqs; - ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN; - ictx->ustorm_st_context.negotiated_rx_and_flags |= - ISCSI_DEF_MAX_BURST_LEN; - ictx->ustorm_st_context.negotiated_rx |= - ISCSI_DEFAULT_MAX_OUTSTANDING_R2T << - USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT; - - ictx->cstorm_st_context.hq_pbl_base.lo = - iscsi->hq_info.pgtbl_map & 0xffffffff; - ictx->cstorm_st_context.hq_pbl_base.hi = - (u64) iscsi->hq_info.pgtbl_map >> 32; - ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0]; - ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1]; - ictx->cstorm_st_context.task_pbl_base.lo = - iscsi->task_array_info.pgtbl_map & 0xffffffff; - ictx->cstorm_st_context.task_pbl_base.hi = - (u64) iscsi->task_array_info.pgtbl_map >> 32; - /* CSTORM and USTORM initialization is different, CSTORM requires - * CQ DB base & not PTE addr */ - ictx->cstorm_st_context.cq_db_base.lo = - req1->cq_page_table_addr_lo & PAGE_MASK; - ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi; - ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id; - ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1; - for (i = 0; i < cp->num_cqs; i++) { - ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] = - ISCSI_INITIAL_SN; - ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] = - ISCSI_INITIAL_SN; - } - - ictx->xstorm_ag_context.cdu_reserved = - CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG, - ISCSI_CONNECTION_TYPE); - ictx->ustorm_ag_context.cdu_usage = - CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG, - ISCSI_CONNECTION_TYPE); - return 0; - -} - -static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[], - u32 num, int *work) -{ - struct iscsi_kwqe_conn_offload1 *req1; - struct iscsi_kwqe_conn_offload2 *req2; - struct cnic_local *cp = dev->cnic_priv; - struct cnic_context *ctx; - struct iscsi_kcqe kcqe; - struct kcqe *cqes[1]; - u32 l5_cid; - int ret = 0; - - if (num < 2) { - *work = num; - return -EINVAL; - } - - req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0]; - req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1]; - if ((num - 2) < req2->num_additional_wqes) { - *work = num; - return -EINVAL; - } - *work = 2 + req2->num_additional_wqes; - - l5_cid = req1->iscsi_conn_id; - if (l5_cid >= MAX_ISCSI_TBL_SZ) - return -EINVAL; - - memset(&kcqe, 0, sizeof(kcqe)); - kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN; - kcqe.iscsi_conn_id = l5_cid; - kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE; - - ctx = &cp->ctx_tbl[l5_cid]; - if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) { - kcqe.completion_status = - ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY; - goto done; - } - - if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) { - atomic_dec(&cp->iscsi_conn); - goto done; - } - ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid); - if (ret) { - atomic_dec(&cp->iscsi_conn); - ret = 0; - goto done; - } - ret = cnic_setup_bnx2x_ctx(dev, wqes, num); - if (ret < 0) { - cnic_free_bnx2x_conn_resc(dev, l5_cid); - atomic_dec(&cp->iscsi_conn); - goto done; - } - - kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; - kcqe.iscsi_conn_context_id = BNX2X_HW_CID(cp, cp->ctx_tbl[l5_cid].cid); - -done: - cqes[0] = (struct kcqe *) &kcqe; - cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); - return 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_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; - union l5cm_specific_data l5_data; - int ret; - u32 hw_cid, type; - - init_waitqueue_head(&ctx->waitq); - ctx->wait_cond = 0; - memset(&l5_data, 0, sizeof(l5_data)); - hw_cid = BNX2X_HW_CID(cp, ctx->cid); - type = (NONE_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT) - & SPE_HDR_CONN_TYPE; - type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) & - SPE_HDR_FUNCTION_ID); - - ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL, - hw_cid, type, &l5_data); - - if (ret == 0) - wait_event(ctx->waitq, ctx->wait_cond); - - return ret; -} - -static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe) -{ - struct cnic_local *cp = dev->cnic_priv; - struct iscsi_kwqe_conn_destroy *req = - (struct iscsi_kwqe_conn_destroy *) kwqe; - u32 l5_cid = req->reserved0; - struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; - int ret = 0; - struct iscsi_kcqe kcqe; - struct kcqe *cqes[1]; - - if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) - goto skip_cfc_delete; - - if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) { - unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies; - - if (delta > (2 * HZ)) - delta = 0; - - set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags); - queue_delayed_work(cnic_wq, &cp->delete_task, delta); - goto destroy_reply; - } - - ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid); - -skip_cfc_delete: - cnic_free_bnx2x_conn_resc(dev, l5_cid); - - atomic_dec(&cp->iscsi_conn); - clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags); - -destroy_reply: - memset(&kcqe, 0, sizeof(kcqe)); - kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN; - kcqe.iscsi_conn_id = l5_cid; - kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; - kcqe.iscsi_conn_context_id = req->context_id; - - cqes[0] = (struct kcqe *) &kcqe; - cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); - - return 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; - u32 pfid = cp->pfid; - u8 *mac = dev->mac_addr; - - CNIC_WR8(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]); - CNIC_WR8(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]); - CNIC_WR8(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]); - CNIC_WR8(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]); - CNIC_WR8(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]); - CNIC_WR8(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]); - - CNIC_WR8(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]); - CNIC_WR8(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1, - mac[4]); - CNIC_WR8(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]); - CNIC_WR8(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1, - mac[2]); - CNIC_WR8(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 2, - mac[1]); - CNIC_WR8(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 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->pfid), xstorm_flags); - - CNIC_WR16(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(cp->pfid), tstorm_flags); -} - -static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[], - u32 num, int *work) -{ - struct cnic_local *cp = dev->cnic_priv; - struct l4_kwq_connect_req1 *kwqe1 = - (struct l4_kwq_connect_req1 *) wqes[0]; - struct l4_kwq_connect_req3 *kwqe3; - struct l5cm_active_conn_buffer *conn_buf; - struct l5cm_conn_addr_params *conn_addr; - union l5cm_specific_data l5_data; - u32 l5_cid = kwqe1->pg_cid; - struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; - struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; - int ret; - - if (num < 2) { - *work = num; - return -EINVAL; - } - - if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) - *work = 3; - else - *work = 2; - - if (num < *work) { - *work = num; - return -EINVAL; - } - - if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) { - netdev_err(dev->netdev, "conn_buf size too big\n"); - return -ENOMEM; - } - conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data); - if (!conn_buf) - return -ENOMEM; - - memset(conn_buf, 0, sizeof(*conn_buf)); - - conn_addr = &conn_buf->conn_addr_buf; - conn_addr->remote_addr_0 = csk->ha[0]; - conn_addr->remote_addr_1 = csk->ha[1]; - conn_addr->remote_addr_2 = csk->ha[2]; - conn_addr->remote_addr_3 = csk->ha[3]; - conn_addr->remote_addr_4 = csk->ha[4]; - conn_addr->remote_addr_5 = csk->ha[5]; - - if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) { - struct l4_kwq_connect_req2 *kwqe2 = - (struct l4_kwq_connect_req2 *) wqes[1]; - - conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4; - conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3; - conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2; - - conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4; - conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3; - conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2; - conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION; - } - kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1]; - - conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip; - conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip; - conn_addr->local_tcp_port = kwqe1->src_port; - conn_addr->remote_tcp_port = kwqe1->dst_port; - - conn_addr->pmtu = kwqe3->pmtu; - cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf); - - CNIC_WR16(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_LOCAL_VLAN_OFFSET(cp->pfid), csk->vlan_id); - - cnic_bnx2x_set_tcp_timestamp(dev, - kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_TIME_STAMP); - - ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT, - kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data); - if (!ret) - set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags); - - return ret; -} - -static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe) -{ - struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe; - union l5cm_specific_data l5_data; - int ret; - - memset(&l5_data, 0, sizeof(l5_data)); - ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE, - req->cid, ISCSI_CONNECTION_TYPE, &l5_data); - return ret; -} - -static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe) -{ - struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe; - union l5cm_specific_data l5_data; - int ret; - - memset(&l5_data, 0, sizeof(l5_data)); - ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT, - req->cid, ISCSI_CONNECTION_TYPE, &l5_data); - return ret; -} -static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe) -{ - struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe; - struct l4_kcq kcqe; - struct kcqe *cqes[1]; - - memset(&kcqe, 0, sizeof(kcqe)); - kcqe.pg_host_opaque = req->host_opaque; - kcqe.pg_cid = req->host_opaque; - kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG; - cqes[0] = (struct kcqe *) &kcqe; - cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1); - return 0; -} - -static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe) -{ - struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe; - struct l4_kcq kcqe; - struct kcqe *cqes[1]; - - memset(&kcqe, 0, sizeof(kcqe)); - kcqe.pg_host_opaque = req->pg_host_opaque; - kcqe.pg_cid = req->pg_cid; - kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG; - cqes[0] = (struct kcqe *) &kcqe; - cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1); - return 0; -} - -static int cnic_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, comp = 0; - - i = 0; - j = 1; - while (num_cqes) { - struct cnic_ulp_ops *ulp_ops; - int ulp_type; - u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag; - u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK; - - if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION)) - comp++; - - while (j < num_cqes) { - u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag; - - if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer) - break; - - if (unlikely(next_op & KCQE_RAMROD_COMPLETION)) - comp++; - j++; - } - - if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA) - ulp_type = CNIC_ULP_RDMA; - else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI) - ulp_type = CNIC_ULP_ISCSI; - else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4) - ulp_type = CNIC_ULP_L4; - else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2) - goto end; - else { - netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n", - kcqe_op_flag); - goto end; - } - - rcu_read_lock(); - ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); - if (likely(ulp_ops)) { - ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type], - cp->completed_kcq + i, j); - } - rcu_read_unlock(); -end: - num_cqes -= j; - i += j; - j = 1; - } - if (unlikely(comp)) - cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp); -} - -static 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, struct kcq_info *info) -{ - struct cnic_local *cp = dev->cnic_priv; - u16 i, ri, hw_prod, last; - struct kcqe *kcqe; - int kcqe_cnt = 0, last_cnt = 0; - - i = ri = last = info->sw_prod_idx; - ri &= MAX_KCQ_IDX; - hw_prod = *info->hw_prod_idx_ptr; - hw_prod = cp->hw_idx(hw_prod); - - while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) { - kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)]; - cp->completed_kcq[kcqe_cnt++] = kcqe; - i = cp->next_idx(i); - ri = i & MAX_KCQ_IDX; - if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) { - last_cnt = kcqe_cnt; - last = i; - } - } - - info->sw_prod_idx = last; - return last_cnt; -} - -static int cnic_l2_completion(struct cnic_local *cp) -{ - u16 hw_cons, sw_cons; - struct cnic_uio_dev *udev = cp->udev; - union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *) - (udev->l2_ring + (2 * BCM_PAGE_SIZE)); - u32 cmd; - int comp = 0; - - if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags)) - return 0; - - hw_cons = *cp->rx_cons_ptr; - if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT) - hw_cons++; - - sw_cons = cp->rx_cons; - while (sw_cons != hw_cons) { - u8 cqe_fp_flags; - - cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT]; - cqe_fp_flags = cqe->fast_path_cqe.type_error_flags; - if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) { - cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data); - cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT; - if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP || - cmd == RAMROD_CMD_ID_ETH_HALT) - comp++; - } - sw_cons = BNX2X_NEXT_RCQE(sw_cons); - } - return comp; -} - -static void cnic_chk_pkt_rings(struct cnic_local *cp) -{ - u16 rx_cons, tx_cons; - int comp = 0; - - if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags)) - return; - - rx_cons = *cp->rx_cons_ptr; - tx_cons = *cp->tx_cons_ptr; - if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) { - if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags)) - comp = cnic_l2_completion(cp); - - cp->tx_cons = tx_cons; - cp->rx_cons = rx_cons; - - if (cp->udev) - uio_event_notify(&cp->udev->cnic_uinfo); - } - if (comp) - clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags); -} - -static u32 cnic_service_bnx2_queues(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - u32 status_idx = (u16) *cp->kcq1.status_idx_ptr; - int kcqe_cnt; - - cp->kwq_con_idx = *cp->kwq_con_idx_ptr; - - while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) { - - service_kcqes(dev, kcqe_cnt); - - /* Tell compiler that status_blk fields can change. */ - barrier(); - if (status_idx != *cp->kcq1.status_idx_ptr) { - status_idx = (u16) *cp->kcq1.status_idx_ptr; - cp->kwq_con_idx = *cp->kwq_con_idx_ptr; - } else - break; - } - - CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx); - - cnic_chk_pkt_rings(cp); - - return status_idx; -} - -static int cnic_service_bnx2(void *data, void *status_blk) -{ - struct cnic_dev *dev = data; - struct cnic_local *cp = dev->cnic_priv; - u32 status_idx = *cp->kcq1.status_idx_ptr; - - if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) - return status_idx; - - return cnic_service_bnx2_queues(dev); -} - -static void cnic_service_bnx2_msix(unsigned long data) -{ - struct cnic_dev *dev = (struct cnic_dev *) data; - struct cnic_local *cp = dev->cnic_priv; - - cp->last_status_idx = cnic_service_bnx2_queues(dev); - - CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | - BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); -} - -static void cnic_doirq(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX; - - if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) { - prefetch(cp->status_blk.gen); - prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]); - - tasklet_schedule(&cp->cnic_irq_task); - } -} - -static irqreturn_t cnic_irq(int irq, void *dev_instance) -{ - struct cnic_dev *dev = dev_instance; - struct cnic_local *cp = dev->cnic_priv; - - if (cp->ack_int) - cp->ack_int(dev); - - cnic_doirq(dev); - - return IRQ_HANDLED; -} - -static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm, - u16 index, u8 op, u8 update) -{ - struct cnic_local *cp = dev->cnic_priv; - u32 hc_addr = (HC_REG_COMMAND_REG + CNIC_PORT(cp) * 32 + - COMMAND_REG_INT_ACK); - struct igu_ack_register igu_ack; - - igu_ack.status_block_index = index; - igu_ack.sb_id_and_flags = - ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) | - (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) | - (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) | - (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT)); - - CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack)); -} - -static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment, - u16 index, u8 op, u8 update) -{ - struct igu_regular cmd_data; - u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8; - - cmd_data.sb_id_and_flags = - (index << IGU_REGULAR_SB_INDEX_SHIFT) | - (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) | - (update << IGU_REGULAR_BUPDATE_SHIFT) | - (op << IGU_REGULAR_ENABLE_INT_SHIFT); - - - CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags); -} - -static void cnic_ack_bnx2x_msix(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - - cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0, - IGU_INT_DISABLE, 0); -} - -static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - - cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0, - IGU_INT_DISABLE, 0); -} - -static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info) -{ - u32 last_status = *info->status_idx_ptr; - int kcqe_cnt; - - while ((kcqe_cnt = cnic_get_kcqes(dev, info))) { - - service_kcqes(dev, kcqe_cnt); - - /* Tell compiler that sblk fields can change. */ - barrier(); - if (last_status == *info->status_idx_ptr) - break; - - last_status = *info->status_idx_ptr; - } - return last_status; -} - -static void cnic_service_bnx2x_bh(unsigned long data) -{ - struct cnic_dev *dev = (struct cnic_dev *) data; - struct cnic_local *cp = dev->cnic_priv; - u32 status_idx; - - if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) - return; - - status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1); - - CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx + MAX_KCQ_IDX); - if (BNX2X_CHIP_IS_E2(cp->chip_id)) - cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, - status_idx, IGU_INT_ENABLE, 1); - else - cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, USTORM_ID, - status_idx, IGU_INT_ENABLE, 1); -} - -static int cnic_service_bnx2x(void *data, void *status_blk) -{ - struct cnic_dev *dev = data; - struct cnic_local *cp = dev->cnic_priv; - - if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) - cnic_doirq(dev); - - cnic_chk_pkt_rings(cp); - - return 0; -} - -static void cnic_ulp_stop(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - int if_type; - - 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; - - if (cp->ctx_tbl) { - struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; - - if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) - return -EAGAIN; - } - - csk1 = &cp->csk_tbl[l5_cid]; - if (atomic_read(&csk1->ref_count)) - return -EAGAIN; - - if (test_and_set_bit(SK_F_INUSE, &csk1->flags)) - return -EBUSY; - - csk1->dev = dev; - csk1->cid = cid; - csk1->l5_cid = l5_cid; - csk1->ulp_type = ulp_type; - csk1->context = context; - - csk1->ka_timeout = DEF_KA_TIMEOUT; - csk1->ka_interval = DEF_KA_INTERVAL; - csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT; - csk1->tos = DEF_TOS; - csk1->ttl = DEF_TTL; - csk1->snd_seq_scale = DEF_SND_SEQ_SCALE; - csk1->rcv_buf = DEF_RCV_BUF; - csk1->snd_buf = DEF_SND_BUF; - csk1->seed = DEF_SEED; - - *csk = csk1; - return 0; -} - -static void cnic_cm_cleanup(struct cnic_sock *csk) -{ - if (csk->src_port) { - struct cnic_dev *dev = csk->dev; - struct cnic_local *cp = dev->cnic_priv; - - cnic_free_id(&cp->csk_port_tbl, 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->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 = L4_KCQE_OPCODE_VALUE_RESET_COMP; - - if (!cnic_in_use(csk)) - return -EINVAL; - - if (cnic_abort_prep(csk)) - return cnic_cm_abort_req(csk); - - /* Getting here means that we haven't started connect, or - * connect was not successful. - */ - - cp->close_conn(csk, opcode); - if (csk->state != opcode) - return -EALREADY; - - return 0; -} - -static int cnic_cm_close(struct cnic_sock *csk) -{ - if (!cnic_in_use(csk)) - return -EINVAL; - - if (cnic_close_prep(csk)) { - csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP; - return cnic_cm_close_req(csk); - } else { - return -EALREADY; - } - return 0; -} - -static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk, - u8 opcode) -{ - struct cnic_ulp_ops *ulp_ops; - int ulp_type = csk->ulp_type; - - rcu_read_lock(); - ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); - if (ulp_ops) { - if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE) - ulp_ops->cm_connect_complete(csk); - else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) - ulp_ops->cm_close_complete(csk); - else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) - ulp_ops->cm_remote_abort(csk); - else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) - ulp_ops->cm_abort_complete(csk); - else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED) - ulp_ops->cm_remote_close(csk); - } - rcu_read_unlock(); -} - -static int cnic_cm_set_pg(struct cnic_sock *csk) -{ - if (cnic_offld_prep(csk)) { - if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) - cnic_cm_update_pg(csk); - else - cnic_cm_offload_pg(csk); - } - return 0; -} - -static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe) -{ - struct cnic_local *cp = dev->cnic_priv; - u32 l5_cid = kcqe->pg_host_opaque; - u8 opcode = kcqe->op_code; - struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; - - csk_hold(csk); - if (!cnic_in_use(csk)) - goto done; - - if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { - clear_bit(SK_F_OFFLD_SCHED, &csk->flags); - goto done; - } - /* Possible PG kcqe status: SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */ - if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) { - clear_bit(SK_F_OFFLD_SCHED, &csk->flags); - cnic_cm_upcall(cp, csk, - L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE); - goto done; - } - - csk->pg_cid = kcqe->pg_cid; - set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); - cnic_cm_conn_req(csk); - -done: - csk_put(csk); -} - -static void cnic_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: - 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 (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { - /* Unsolicited RESET_COMP or RESET_RECEIVED */ - opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED; - csk->state = opcode; - } - - /* 1. If event opcode matches the expected event in csk->state - * 2. If the expected event is CLOSE_COMP, we accept any event - * 3. If the expected event is 0, meaning the connection was never - * never established, we accept the opcode from cm_abort. - */ - if (opcode == csk->state || csk->state == 0 || - csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) { - if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) { - if (csk->state == 0) - csk->state = opcode; - return 1; - } - } - return 0; -} - -static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode) -{ - struct cnic_dev *dev = csk->dev; - struct cnic_local *cp = dev->cnic_priv; - - if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) { - cnic_cm_upcall(cp, csk, opcode); - return; - } - - clear_bit(SK_F_CONNECT_START, &csk->flags); - cnic_close_conn(csk); - csk->state = opcode; - cnic_cm_upcall(cp, csk, opcode); -} - -static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev) -{ -} - -static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev) -{ - u32 seed; - - 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)) { - if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) - cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE; - else - close_complete = 1; - } - break; - case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE: - cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD; - break; - case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD: - close_complete = 1; - break; - } - if (cmd) { - memset(&l5_data, 0, sizeof(l5_data)); - - cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE, - &l5_data); - } else if (close_complete) { - ctx->timestamp = jiffies; - cnic_close_conn(csk); - cnic_cm_upcall(cp, csk, csk->state); - } -} - -static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - int i; - - if (!cp->ctx_tbl) - return; - - if (!netif_running(dev->netdev)) - return; - - for (i = 0; i < cp->max_cid_space; i++) { - struct cnic_context *ctx = &cp->ctx_tbl[i]; - - while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags)) - msleep(10); - - if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) - netdev_warn(dev->netdev, "CID %x not deleted\n", - ctx->cid); - } - - cancel_delayed_work(&cp->delete_task); - flush_workqueue(cnic_wq); - - if (atomic_read(&cp->iscsi_conn) != 0) - netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n", - atomic_read(&cp->iscsi_conn)); -} - -static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - u32 pfid = cp->pfid; - u32 port = CNIC_PORT(cp); - - cnic_init_bnx2x_mac(dev); - cnic_bnx2x_set_tcp_timestamp(dev, 1); - - CNIC_WR16(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0); - - CNIC_WR(dev, BAR_XSTRORM_INTMEM + - XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1); - CNIC_WR(dev, BAR_XSTRORM_INTMEM + - XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port), - DEF_MAX_DA_COUNT); - - CNIC_WR8(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL); - CNIC_WR8(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS); - CNIC_WR8(dev, BAR_XSTRORM_INTMEM + - XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2); - CNIC_WR(dev, BAR_XSTRORM_INTMEM + - XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER); - - CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid), - DEF_MAX_CWND); - return 0; -} - -static void cnic_delete_task(struct work_struct *work) -{ - struct cnic_local *cp; - struct cnic_dev *dev; - u32 i; - int need_resched = 0; - - cp = container_of(work, struct cnic_local, delete_task.work); - dev = cp->dev; - - for (i = 0; i < cp->max_cid_space; i++) { - struct cnic_context *ctx = &cp->ctx_tbl[i]; - - if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) || - !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags)) - continue; - - if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) { - need_resched = 1; - continue; - } - - if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags)) - continue; - - cnic_bnx2x_destroy_ramrod(dev, i); - - cnic_free_bnx2x_conn_resc(dev, i); - if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) - atomic_dec(&cp->iscsi_conn); - - clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags); - } - - if (need_resched) - queue_delayed_work(cnic_wq, &cp->delete_task, - msecs_to_jiffies(10)); - -} - -static int cnic_cm_open(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - int err; - - err = cnic_cm_alloc_mem(dev); - if (err) - return err; - - err = cp->start_cm(dev); - - if (err) - goto err_out; - - INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task); - - dev->cm_create = cnic_cm_create; - dev->cm_destroy = cnic_cm_destroy; - dev->cm_connect = cnic_cm_connect; - dev->cm_abort = cnic_cm_abort; - dev->cm_close = cnic_cm_close; - dev->cm_select_dev = cnic_cm_select_dev; - - cp->ulp_handle[CNIC_ULP_L4] = dev; - rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops); - return 0; - -err_out: - cnic_cm_free_mem(dev); - return err; -} - -static int cnic_cm_shutdown(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - int i; - - cp->stop_cm(dev); - - if (!cp->csk_tbl) - return 0; - - for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) { - struct cnic_sock *csk = &cp->csk_tbl[i]; - - clear_bit(SK_F_INUSE, &csk->flags); - cnic_cm_cleanup(csk); - } - cnic_cm_free_mem(dev); - - return 0; -} - -static void cnic_init_context(struct cnic_dev *dev, u32 cid) -{ - u32 cid_addr; - int i; - - cid_addr = GET_CID_ADDR(cid); - - for (i = 0; i < CTX_SIZE; i += 4) - cnic_ctx_wr(dev, cid_addr, i, 0); -} - -static int cnic_setup_5709_context(struct cnic_dev *dev, int valid) -{ - struct cnic_local *cp = dev->cnic_priv; - int ret = 0, i; - u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0; - - if (CHIP_NUM(cp) != CHIP_NUM_5709) - return 0; - - for (i = 0; i < cp->ctx_blks; i++) { - int j; - u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk; - u32 val; - - memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE); - - CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0, - (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit); - CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1, - (u64) cp->ctx_arr[i].mapping >> 32); - CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx | - BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ); - for (j = 0; j < 10; j++) { - - val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL); - if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ)) - break; - udelay(5); - } - if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) { - ret = -EBUSY; - break; - } - } - return ret; -} - -static void cnic_free_irq(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - - if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { - cp->disable_int_sync(dev); - tasklet_kill(&cp->cnic_irq_task); - free_irq(ethdev->irq_arr[0].vector, dev); - } -} - -static int cnic_request_irq(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - int err; - - err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev); - if (err) - tasklet_disable(&cp->cnic_irq_task); - - return err; -} - -static int cnic_init_bnx2_irq(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - - if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { - int err, i = 0; - int sblk_num = cp->status_blk_num; - u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) + - BNX2_HC_SB_CONFIG_1; - - CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT); - - CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8); - CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220); - CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220); - - cp->last_status_idx = cp->status_blk.bnx2->status_idx; - tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix, - (unsigned long) dev); - err = cnic_request_irq(dev); - if (err) - return err; - - while (cp->status_blk.bnx2->status_completion_producer_index && - i < 10) { - CNIC_WR(dev, BNX2_HC_COALESCE_NOW, - 1 << (11 + sblk_num)); - udelay(10); - i++; - barrier(); - } - if (cp->status_blk.bnx2->status_completion_producer_index) { - cnic_free_irq(dev); - goto failed; - } - - } else { - struct status_block *sblk = cp->status_blk.gen; - u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND); - int i = 0; - - while (sblk->status_completion_producer_index && i < 10) { - CNIC_WR(dev, BNX2_HC_COMMAND, - hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT); - udelay(10); - i++; - barrier(); - } - if (sblk->status_completion_producer_index) - goto failed; - - } - return 0; - -failed: - netdev_err(dev->netdev, "KCQ index not resetting to 0\n"); - return -EBUSY; -} - -static void cnic_enable_bnx2_int(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - - if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) - return; - - CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | - BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); -} - -static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - - if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) - return; - - CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | - BNX2_PCICFG_INT_ACK_CMD_MASK_INT); - CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD); - synchronize_irq(ethdev->irq_arr[0].vector); -} - -static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct cnic_uio_dev *udev = cp->udev; - u32 cid_addr, tx_cid, sb_id; - u32 val, offset0, offset1, offset2, offset3; - int i; - struct tx_bd *txbd; - dma_addr_t buf_map, ring_map = udev->l2_ring_map; - struct status_block *s_blk = cp->status_blk.gen; - - sb_id = cp->status_blk_num; - tx_cid = 20; - cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2; - if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { - struct status_block_msix *sblk = cp->status_blk.bnx2; - - tx_cid = TX_TSS_CID + sb_id - 1; - CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) | - (TX_TSS_CID << 7)); - cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index; - } - cp->tx_cons = *cp->tx_cons_ptr; - - cid_addr = GET_CID_ADDR(tx_cid); - if (CHIP_NUM(cp) == CHIP_NUM_5709) { - u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40; - - for (i = 0; i < PHY_CTX_SIZE; i += 4) - cnic_ctx_wr(dev, cid_addr2, i, 0); - - offset0 = BNX2_L2CTX_TYPE_XI; - offset1 = BNX2_L2CTX_CMD_TYPE_XI; - offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI; - offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI; - } else { - cnic_init_context(dev, tx_cid); - cnic_init_context(dev, tx_cid + 1); - - offset0 = BNX2_L2CTX_TYPE; - offset1 = BNX2_L2CTX_CMD_TYPE; - offset2 = BNX2_L2CTX_TBDR_BHADDR_HI; - offset3 = BNX2_L2CTX_TBDR_BHADDR_LO; - } - val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2; - cnic_ctx_wr(dev, cid_addr, offset0, val); - - val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16); - cnic_ctx_wr(dev, cid_addr, offset1, val); - - txbd = (struct tx_bd *) udev->l2_ring; - - buf_map = udev->l2_buf_map; - for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) { - txbd->tx_bd_haddr_hi = (u64) buf_map >> 32; - txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff; - } - val = (u64) ring_map >> 32; - cnic_ctx_wr(dev, cid_addr, offset2, val); - txbd->tx_bd_haddr_hi = val; - - val = (u64) ring_map & 0xffffffff; - cnic_ctx_wr(dev, cid_addr, offset3, val); - txbd->tx_bd_haddr_lo = val; -} - -static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct cnic_uio_dev *udev = cp->udev; - u32 cid_addr, sb_id, val, coal_reg, coal_val; - int i; - struct rx_bd *rxbd; - struct status_block *s_blk = cp->status_blk.gen; - dma_addr_t ring_map = udev->l2_ring_map; - - sb_id = cp->status_blk_num; - cnic_init_context(dev, 2); - cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2; - coal_reg = BNX2_HC_COMMAND; - coal_val = CNIC_RD(dev, coal_reg); - if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { - struct status_block_msix *sblk = cp->status_blk.bnx2; - - cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index; - coal_reg = BNX2_HC_COALESCE_NOW; - coal_val = 1 << (11 + sb_id); - } - i = 0; - while (!(*cp->rx_cons_ptr != 0) && i < 10) { - CNIC_WR(dev, coal_reg, coal_val); - udelay(10); - i++; - barrier(); - } - cp->rx_cons = *cp->rx_cons_ptr; - - cid_addr = GET_CID_ADDR(2); - val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE | - BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8); - cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val); - - if (sb_id == 0) - val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT; - else - val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id); - cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val); - - rxbd = (struct rx_bd *) (udev->l2_ring + BCM_PAGE_SIZE); - for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) { - dma_addr_t buf_map; - int n = (i % cp->l2_rx_ring_size) + 1; - - buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size); - rxbd->rx_bd_len = cp->l2_single_buf_size; - rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END; - rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32; - rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff; - } - val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32; - cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val); - rxbd->rx_bd_haddr_hi = val; - - val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff; - cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val); - rxbd->rx_bd_haddr_lo = val; - - val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD); - cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2)); -} - -static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev) -{ - struct kwqe *wqes[1], l2kwqe; - - memset(&l2kwqe, 0, sizeof(l2kwqe)); - wqes[0] = &l2kwqe; - l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_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, kcq_cid_addr, kwq_cid_addr; - int err; - - cnic_set_bnx2_mac(dev); - - val = CNIC_RD(dev, BNX2_MQ_CONFIG); - val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE; - if (BCM_PAGE_BITS > 12) - val |= (12 - 8) << 4; - else - val |= (BCM_PAGE_BITS - 8) << 4; - - CNIC_WR(dev, BNX2_MQ_CONFIG, val); - - CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8); - CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220); - CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220); - - err = cnic_setup_5709_context(dev, 1); - if (err) - return err; - - cnic_init_context(dev, KWQ_CID); - cnic_init_context(dev, KCQ_CID); - - kwq_cid_addr = GET_CID_ADDR(KWQ_CID); - cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX; - - cp->max_kwq_idx = MAX_KWQ_IDX; - cp->kwq_prod_idx = 0; - cp->kwq_con_idx = 0; - set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags); - - if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708) - cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15; - else - cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index; - - /* Initialize the kernel work queue context. */ - val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | - (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; - cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val); - - val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16; - cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); - - val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT; - cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); - - val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32); - cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); - - val = (u32) cp->kwq_info.pgtbl_map; - cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); - - kcq_cid_addr = GET_CID_ADDR(KCQ_CID); - cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX; - - cp->kcq1.sw_prod_idx = 0; - cp->kcq1.hw_prod_idx_ptr = - (u16 *) &sblk->status_completion_producer_index; - - cp->kcq1.status_idx_ptr = (u16 *) &sblk->status_idx; - - /* Initialize the kernel complete queue context. */ - val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | - (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; - cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val); - - val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16; - cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); - - val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT; - cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); - - val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32); - cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); - - val = (u32) cp->kcq1.dma.pgtbl_map; - cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); - - cp->int_num = 0; - if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { - struct status_block_msix *msblk = cp->status_blk.bnx2; - u32 sb_id = cp->status_blk_num; - u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id); - - cp->kcq1.hw_prod_idx_ptr = - (u16 *) &msblk->status_completion_producer_index; - cp->kcq1.status_idx_ptr = (u16 *) &msblk->status_idx; - cp->kwq_con_idx_ptr = (u16 *) &msblk->status_cmd_consumer_index; - cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT; - cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); - cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); - } - - /* Enable Commnad Scheduler notification when we write to the - * host producer index of the kernel contexts. */ - CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2); - - /* Enable Command Scheduler notification when we write to either - * the Send Queue or Receive Queue producer indexes of the kernel - * bypass contexts. */ - CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7); - CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7); - - /* Notify COM when the driver post an application buffer. */ - CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000); - - /* Set the CP and COM doorbells. These two processors polls the - * doorbell for a non zero value before running. This must be done - * after setting up the kernel queue contexts. */ - cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1); - cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1); - - cnic_init_bnx2_tx_ring(dev); - cnic_init_bnx2_rx_ring(dev); - - err = cnic_init_bnx2_irq(dev); - if (err) { - netdev_err(dev->netdev, "cnic_init_irq failed\n"); - cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); - cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); - return err; - } - - return 0; -} - -static void cnic_setup_bnx2x_context(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - u32 start_offset = ethdev->ctx_tbl_offset; - int i; - - for (i = 0; i < cp->ctx_blks; i++) { - struct cnic_ctx *ctx = &cp->ctx_arr[i]; - dma_addr_t map = ctx->mapping; - - if (cp->ctx_align) { - unsigned long mask = cp->ctx_align - 1; - - map = (map + mask) & ~mask; - } - - cnic_ctx_tbl_wr(dev, start_offset + i, map); - } -} - -static int cnic_init_bnx2x_irq(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - int err = 0; - - tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh, - (unsigned long) dev); - if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) - err = cnic_request_irq(dev); - - return err; -} - -static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev, - u16 sb_id, u8 sb_index, - u8 disable) -{ - - u32 addr = BAR_CSTRORM_INTMEM + - CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) + - offsetof(struct hc_status_block_data_e1x, index_data) + - sizeof(struct hc_index_data)*sb_index + - offsetof(struct hc_index_data, flags); - u16 flags = CNIC_RD16(dev, addr); - /* clear and set */ - flags &= ~HC_INDEX_DATA_HC_ENABLED; - flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) & - HC_INDEX_DATA_HC_ENABLED); - CNIC_WR16(dev, addr, flags); -} - -static void cnic_enable_bnx2x_int(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - u8 sb_id = cp->status_blk_num; - - CNIC_WR8(dev, BAR_CSTRORM_INTMEM + - CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) + - offsetof(struct hc_status_block_data_e1x, index_data) + - sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS + - offsetof(struct hc_index_data, timeout), 64 / 12); - cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0); -} - -static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev) -{ -} - -static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev, - struct client_init_ramrod_data *data) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_uio_dev *udev = cp->udev; - union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring; - dma_addr_t buf_map, ring_map = udev->l2_ring_map; - struct host_sp_status_block *sb = cp->bnx2x_def_status_blk; - int 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 = udev->l2_buf_map; - for (i = 0; i < MAX_TX_DESC_CNT; i += 3, txbd += 3) { - struct eth_tx_start_bd *start_bd = &txbd->start_bd; - struct eth_tx_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); - - } - - val = (u64) ring_map >> 32; - txbd->next_bd.addr_hi = cpu_to_le32(val); - - data->tx.tx_bd_page_base.hi = cpu_to_le32(val); - - val = (u64) ring_map & 0xffffffff; - txbd->next_bd.addr_lo = cpu_to_le32(val); - - data->tx.tx_bd_page_base.lo = cpu_to_le32(val); - - /* Other ramrod params */ - data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS; - data->tx.tx_status_block_id = BNX2X_DEF_SB_ID; - - /* reset xstorm per client statistics */ - if (cli < MAX_STAT_COUNTER_ID) { - 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 = - &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS]; -} - -static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev, - struct client_init_ramrod_data *data) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_uio_dev *udev = cp->udev; - struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring + - BCM_PAGE_SIZE); - struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *) - (udev->l2_ring + (2 * BCM_PAGE_SIZE)); - struct host_sp_status_block *sb = cp->bnx2x_def_status_blk; - int i; - int port = CNIC_PORT(cp); - int cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp)); - int cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli); - u32 val; - dma_addr_t ring_map = udev->l2_ring_map; - - /* General data */ - data->general.client_id = cli; - data->general.statistics_en_flg = 1; - data->general.statistics_counter_id = cli; - data->general.activate_flg = 1; - data->general.sp_client_id = cli; - - for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) { - dma_addr_t buf_map; - int n = (i % cp->l2_rx_ring_size) + 1; - - buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size); - rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32); - rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff); - } - - val = (u64) (ring_map + BCM_PAGE_SIZE) >> 32; - rxbd->addr_hi = cpu_to_le32(val); - data->rx.bd_page_base.hi = cpu_to_le32(val); - - val = (u64) (ring_map + BCM_PAGE_SIZE) & 0xffffffff; - rxbd->addr_lo = cpu_to_le32(val); - data->rx.bd_page_base.lo = cpu_to_le32(val); - - rxcqe += BNX2X_MAX_RCQ_DESC_CNT; - val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) >> 32; - rxcqe->addr_hi = cpu_to_le32(val); - data->rx.cqe_page_base.hi = cpu_to_le32(val); - - val = (u64) (ring_map + (2 * BCM_PAGE_SIZE)) & 0xffffffff; - rxcqe->addr_lo = cpu_to_le32(val); - data->rx.cqe_page_base.lo = cpu_to_le32(val); - - /* Other ramrod params */ - data->rx.client_qzone_id = cl_qzone_id; - data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS; - data->rx.status_block_id = BNX2X_DEF_SB_ID; - - data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT; - data->rx.bd_buff_size = cpu_to_le16(cp->l2_single_buf_size); - - data->rx.mtu = cpu_to_le16(cp->l2_single_buf_size - 14); - data->rx.outer_vlan_removal_enable_flg = 1; - - /* reset tstorm and ustorm per client statistics */ - if (cli < MAX_STAT_COUNTER_ID) { - 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); - - 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 = - &sb->sp_sb.index_values[HC_SP_INDEX_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, base2, addr, val; - int port = CNIC_PORT(cp); - - dev->max_iscsi_conn = 0; - base = CNIC_RD(dev, MISC_REG_SHARED_MEM_ADDR); - if (base == 0) - return; - - base2 = CNIC_RD(dev, (CNIC_PATH(cp) ? MISC_REG_GENERIC_CR_1 : - MISC_REG_GENERIC_CR_0)); - 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) || BNX2X_CHIP_IS_E2(cp->chip_id)) { - int func = CNIC_FUNC(cp); - u32 mf_cfg_addr; - - if (BNX2X_SHMEM2_HAS(base2, mf_cfg_addr)) - mf_cfg_addr = CNIC_RD(dev, BNX2X_SHMEM2_ADDR(base2, - mf_cfg_addr)); - else - mf_cfg_addr = base + BNX2X_SHMEM_MF_BLK_OFFSET; - - addr = mf_cfg_addr + - offsetof(struct 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 = mf_cfg_addr + - offsetof(struct 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; - struct cnic_eth_dev *ethdev = cp->ethdev; - int func = CNIC_FUNC(cp), ret, i; - u32 pfid; - - if (BNX2X_CHIP_IS_E2(cp->chip_id)) { - u32 val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN_OVWR); - - if (!(val & 1)) - val = CNIC_RD(dev, MISC_REG_PORT4MODE_EN); - else - val = (val >> 1) & 1; - - if (val) - cp->pfid = func >> 1; - else - cp->pfid = func & 0x6; - } else { - cp->pfid = func; - } - pfid = cp->pfid; - - ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ, - cp->iscsi_start_cid); - - if (ret) - return -ENOMEM; - - cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2; - - cp->kcq1.io_addr = BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0); - cp->kcq1.sw_prod_idx = 0; - - if (BNX2X_CHIP_IS_E2(cp->chip_id)) { - struct host_hc_status_block_e2 *sb = cp->status_blk.gen; - - cp->kcq1.hw_prod_idx_ptr = - &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS]; - cp->kcq1.status_idx_ptr = - &sb->sb.running_index[SM_RX_ID]; - } else { - struct host_hc_status_block_e1x *sb = cp->status_blk.gen; - - cp->kcq1.hw_prod_idx_ptr = - &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS]; - cp->kcq1.status_idx_ptr = - &sb->sb.running_index[SM_RX_ID]; - } - - cnic_get_bnx2x_iscsi_info(dev); - - /* Only 1 EQ */ - CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX); - CNIC_WR(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0); - CNIC_WR(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0), - cp->kcq1.dma.pg_map_arr[1] & 0xffffffff); - CNIC_WR(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4, - (u64) cp->kcq1.dma.pg_map_arr[1] >> 32); - CNIC_WR(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0), - cp->kcq1.dma.pg_map_arr[0] & 0xffffffff); - CNIC_WR(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4, - (u64) cp->kcq1.dma.pg_map_arr[0] >> 32); - CNIC_WR8(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1); - CNIC_WR16(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num); - CNIC_WR8(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0), - HC_INDEX_ISCSI_EQ_CONS); - - for (i = 0; i < cp->conn_buf_info.num_pages; i++) { - CNIC_WR(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i), - cp->conn_buf_info.pgtbl[2 * i]); - CNIC_WR(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_CONN_BUF_PBL_OFFSET(pfid, i) + 4, - cp->conn_buf_info.pgtbl[(2 * i) + 1]); - } - - CNIC_WR(dev, BAR_USTRORM_INTMEM + - USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid), - cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff); - CNIC_WR(dev, BAR_USTRORM_INTMEM + - USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4, - (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32); - - CNIC_WR(dev, BAR_TSTRORM_INTMEM + - TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF); - - cnic_setup_bnx2x_context(dev); - - ret = cnic_init_bnx2x_irq(dev); - if (ret) - return ret; - - return 0; -} - -static void cnic_init_rings(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_uio_dev *udev = cp->udev; - - if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags)) - return; - - if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { - cnic_init_bnx2_tx_ring(dev); - cnic_init_bnx2_rx_ring(dev); - set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags); - } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { - u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp)); - u32 cl_qzone_id, type; - struct client_init_ramrod_data *data; - 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(); - - cl_qzone_id = BNX2X_CL_QZONE_ID(cp, cli); - - off = BAR_USTRORM_INTMEM + - (BNX2X_CHIP_IS_E2(cp->chip_id) ? - USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) : - USTORM_RX_PRODS_E1X_OFFSET(CNIC_PORT(cp), cli)); - - for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++) - CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]); - - set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags); - - data = udev->l2_buf; - - memset(data, 0, sizeof(*data)); - - cnic_init_bnx2x_tx_ring(dev, data); - cnic_init_bnx2x_rx_ring(dev, data); - - l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff; - l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32; - - type = (ETH_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT) - & SPE_HDR_CONN_TYPE; - type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) & - SPE_HDR_FUNCTION_ID); - - set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags); - - cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP, - BNX2X_ISCSI_L2_CID, type, &l5_data); - - i = 0; - while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) && - ++i < 10) - msleep(1); - - if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags)) - netdev_err(dev->netdev, - "iSCSI CLIENT_SETUP did not complete\n"); - cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1); - cnic_ring_ctl(dev, BNX2X_ISCSI_L2_CID, cli, 1); - } -} - -static void cnic_shutdown_rings(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - - if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags)) - return; - - if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { - cnic_shutdown_bnx2_rx_ring(dev); - } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { - struct cnic_local *cp = dev->cnic_priv; - u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp)); - union l5cm_specific_data l5_data; - int i; - u32 type; - - 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_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1); - - memset(&l5_data, 0, sizeof(l5_data)); - type = (NONE_CONNECTION_TYPE << SPE_HDR_CONN_TYPE_SHIFT) - & SPE_HDR_CONN_TYPE; - type |= ((cp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) & - SPE_HDR_FUNCTION_ID); - cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL, - BNX2X_ISCSI_L2_CID, type, &l5_data); - msleep(10); - } - clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags); -} - -static int cnic_register_netdev(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - int err; - - if (!ethdev) - return -ENODEV; - - if (ethdev->drv_state & CNIC_DRV_STATE_REGD) - return 0; - - err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev); - if (err) - netdev_err(dev->netdev, "register_cnic failed\n"); - - return err; -} - -static void cnic_unregister_netdev(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - - if (!ethdev) - return; - - ethdev->drv_unregister_cnic(dev->netdev); -} - -static int cnic_start_hw(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - int err; - - if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) - return -EALREADY; - - dev->regview = ethdev->io_base; - pci_dev_get(dev->pcidev); - cp->func = PCI_FUNC(dev->pcidev->devfn); - cp->status_blk.gen = ethdev->irq_arr[0].status_blk; - cp->status_blk_num = ethdev->irq_arr[0].status_blk_num; - - err = cp->alloc_resc(dev); - if (err) { - netdev_err(dev->netdev, "allocate resource failure\n"); - goto err1; - } - - err = cp->start_hw(dev); - if (err) - goto err1; - - err = cnic_cm_open(dev); - if (err) - goto err1; - - set_bit(CNIC_F_CNIC_UP, &dev->flags); - - cp->enable_int(dev); - - return 0; - -err1: - cp->free_resc(dev); - pci_dev_put(dev->pcidev); - return err; -} - -static void cnic_stop_bnx2_hw(struct cnic_dev *dev) -{ - cnic_disable_bnx2_int_sync(dev); - - cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); - cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); - - cnic_init_context(dev, KWQ_CID); - cnic_init_context(dev, KCQ_CID); - - cnic_setup_5709_context(dev, 0); - cnic_free_irq(dev); - - cnic_free_resc(dev); -} - - -static void cnic_stop_bnx2x_hw(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - - cnic_free_irq(dev); - *cp->kcq1.hw_prod_idx_ptr = 0; - CNIC_WR(dev, BAR_CSTRORM_INTMEM + - CSTORM_ISCSI_EQ_CONS_OFFSET(cp->pfid, 0), 0); - CNIC_WR16(dev, cp->kcq1.io_addr, 0); - cnic_free_resc(dev); -} - -static void cnic_stop_hw(struct cnic_dev *dev) -{ - if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { - struct cnic_local *cp = dev->cnic_priv; - int i = 0; - - /* Need to wait for the ring shutdown event to complete - * before clearing the CNIC_UP flag. - */ - while (cp->udev->uio_dev != -1 && i < 15) { - msleep(100); - i++; - } - cnic_shutdown_rings(dev); - 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->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->chip_id = ethdev->chip_id; - - 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->chip_id = ethdev->chip_id; - - cp->cnic_ops = &cnic_bnx2x_ops; - cp->start_hw = cnic_start_bnx2x_hw; - cp->stop_hw = cnic_stop_bnx2x_hw; - cp->setup_pgtbl = cnic_setup_page_tbl_le; - cp->alloc_resc = cnic_alloc_bnx2x_resc; - cp->free_resc = cnic_free_resc; - cp->start_cm = cnic_cm_init_bnx2x_hw; - cp->stop_cm = cnic_cm_stop_bnx2x_hw; - cp->enable_int = cnic_enable_bnx2x_int; - cp->disable_int_sync = cnic_disable_bnx2x_int_sync; - if (BNX2X_CHIP_IS_E2(cp->chip_id)) - cp->ack_int = cnic_ack_bnx2x_e2_msix; - else - 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; - struct cnic_uio_dev *udev; - - while (!list_empty(&cnic_dev_list)) { - dev = list_entry(cnic_dev_list.next, struct cnic_dev, list); - if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { - cnic_ulp_stop(dev); - cnic_stop_hw(dev); - } - - cnic_ulp_exit(dev); - cnic_unregister_netdev(dev); - list_del_init(&dev->list); - cnic_free_dev(dev); - } - while (!list_empty(&cnic_udev_list)) { - udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev, - list); - cnic_free_uio(udev); - } -} - -static int __init cnic_init(void) -{ - int rc = 0; - - pr_info("%s", version); - - rc = register_netdevice_notifier(&cnic_netdev_notifier); - if (rc) { - cnic_release(); - return rc; - } - - cnic_wq = create_singlethread_workqueue("cnic_wq"); - if (!cnic_wq) { - cnic_release(); - unregister_netdevice_notifier(&cnic_netdev_notifier); - return -ENOMEM; - } - - return 0; -} - -static void __exit cnic_exit(void) -{ - unregister_netdevice_notifier(&cnic_netdev_notifier); - cnic_release(); - destroy_workqueue(cnic_wq); -} - -module_init(cnic_init); -module_exit(cnic_exit); |