diff options
Diffstat (limited to 'drivers/net/cnic.c')
| -rw-r--r-- | drivers/net/cnic.c | 2715 |
1 files changed, 0 insertions, 2715 deletions
diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c deleted file mode 100644 index 4d1515f45ba..00000000000 --- a/drivers/net/cnic.c +++ /dev/null @@ -1,2715 +0,0 @@ -/* cnic.c: Broadcom CNIC core network driver. - * - * Copyright (c) 2006-2009 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> - */ - -#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 <scsi/iscsi_if.h> - -#include "cnic_if.h" -#include "bnx2.h" -#include "cnic.h" -#include "cnic_defs.h" - -#define DRV_MODULE_NAME "cnic" -#define PFX DRV_MODULE_NAME ": " - -static char version[] __devinitdata = - "Broadcom NetXtreme II CNIC Driver " DRV_MODULE_NAME " v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n"; - -MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) " - "Chen (zongxi@broadcom.com"); -MODULE_DESCRIPTION("Broadcom NetXtreme II CNIC Driver"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(CNIC_MODULE_VERSION); - -static LIST_HEAD(cnic_dev_list); -static DEFINE_RWLOCK(cnic_dev_lock); -static DEFINE_MUTEX(cnic_lock); - -static struct cnic_ulp_ops *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE]; - -static int cnic_service_bnx2(void *, void *); -static int cnic_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 void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *); -static void cnic_init_bnx2_tx_ring(struct cnic_dev *); -static void cnic_init_bnx2_rx_ring(struct cnic_dev *); -static int cnic_cm_set_pg(struct cnic_sock *); - -static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode) -{ - struct cnic_dev *dev = uinfo->priv; - struct cnic_local *cp = dev->cnic_priv; - - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - - if (cp->uio_dev != -1) - return -EBUSY; - - cp->uio_dev = iminor(inode); - - cnic_shutdown_bnx2_rx_ring(dev); - - cnic_init_bnx2_tx_ring(dev); - cnic_init_bnx2_rx_ring(dev); - - return 0; -} - -static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode) -{ - struct cnic_dev *dev = uinfo->priv; - struct cnic_local *cp = dev->cnic_priv; - - cp->uio_dev = -1; - return 0; -} - -static inline void cnic_hold(struct cnic_dev *dev) -{ - atomic_inc(&dev->ref_count); -} - -static inline void cnic_put(struct cnic_dev *dev) -{ - atomic_dec(&dev->ref_count); -} - -static inline void csk_hold(struct cnic_sock *csk) -{ - atomic_inc(&csk->ref_count); -} - -static inline void csk_put(struct cnic_sock *csk) -{ - atomic_dec(&csk->ref_count); -} - -static struct cnic_dev *cnic_from_netdev(struct net_device *netdev) -{ - struct cnic_dev *cdev; - - read_lock(&cnic_dev_lock); - list_for_each_entry(cdev, &cnic_dev_list, list) { - if (netdev == cdev->netdev) { - cnic_hold(cdev); - read_unlock(&cnic_dev_lock); - return cdev; - } - } - read_unlock(&cnic_dev_lock); - return NULL; -} - -static 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_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct drv_ctl_info info; - struct drv_ctl_io *io = &info.data.io; - - info.cmd = DRV_CTL_IO_WR_CMD; - io->offset = off; - io->data = val; - ethdev->drv_ctl(dev->netdev, &info); -} - -static u32 cnic_reg_rd_ind(struct cnic_dev *dev, u32 off) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct drv_ctl_info info; - struct drv_ctl_io *io = &info.data.io; - - info.cmd = DRV_CTL_IO_RD_CMD; - io->offset = off; - ethdev->drv_ctl(dev->netdev, &info); - return io->data; -} - -static int cnic_in_use(struct cnic_sock *csk) -{ - return test_bit(SK_F_INUSE, &csk->flags); -} - -static void cnic_kwq_completion(struct cnic_dev *dev, u32 count) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct drv_ctl_info info; - - info.cmd = DRV_CTL_COMPLETION_CMD; - info.data.comp.comp_count = count; - ethdev->drv_ctl(dev->netdev, &info); -} - -static int cnic_send_nlmsg(struct cnic_local *cp, u32 type, - struct cnic_sock *csk) -{ - struct iscsi_path path_req; - char *buf = NULL; - u16 len = 0; - u32 msg_type = ISCSI_KEVENT_IF_DOWN; - struct cnic_ulp_ops *ulp_ops; - - if (cp->uio_dev == -1) - return -ENODEV; - - if (csk) { - len = sizeof(path_req); - buf = (char *) &path_req; - memset(&path_req, 0, len); - - msg_type = ISCSI_KEVENT_PATH_REQ; - path_req.handle = (u64) csk->l5_cid; - if (test_bit(SK_F_IPV6, &csk->flags)) { - memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0], - sizeof(struct in6_addr)); - path_req.ip_addr_len = 16; - } else { - memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0], - sizeof(struct in_addr)); - path_req.ip_addr_len = 4; - } - path_req.vlan_id = csk->vlan_id; - path_req.pmtu = csk->mtu; - } - - rcu_read_lock(); - ulp_ops = rcu_dereference(cp->ulp_ops[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; - - 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); - rc = 0; - } - } - - return rc; -} - -static int cnic_offld_prep(struct cnic_sock *csk) -{ - if (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) - return 0; - - if (!test_bit(SK_F_CONNECT_START, &csk->flags)) { - clear_bit(SK_F_OFFLD_SCHED, &csk->flags); - return 0; - } - - return 1; -} - -static int cnic_close_prep(struct cnic_sock *csk) -{ - clear_bit(SK_F_CONNECT_START, &csk->flags); - smp_mb__after_clear_bit(); - - if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { - while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) - msleep(1); - - return 1; - } - return 0; -} - -static int cnic_abort_prep(struct cnic_sock *csk) -{ - clear_bit(SK_F_CONNECT_START, &csk->flags); - smp_mb__after_clear_bit(); - - while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) - msleep(1); - - if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { - csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; - return 1; - } - - return 0; -} - -int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops) -{ - struct cnic_dev *dev; - - if (ulp_type >= MAX_CNIC_ULP_TYPE) { - printk(KERN_ERR PFX "cnic_register_driver: Bad type %d\n", - ulp_type); - return -EINVAL; - } - mutex_lock(&cnic_lock); - if (cnic_ulp_tbl[ulp_type]) { - printk(KERN_ERR PFX "cnic_register_driver: Type %d has already " - "been registered\n", 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); - - 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; - - if (ulp_type >= MAX_CNIC_ULP_TYPE) { - printk(KERN_ERR PFX "cnic_unregister_driver: Bad type %d\n", - ulp_type); - return -EINVAL; - } - mutex_lock(&cnic_lock); - if (!cnic_ulp_tbl[ulp_type]) { - printk(KERN_ERR PFX "cnic_unregister_driver: Type %d has not " - "been registered\n", 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])) { - printk(KERN_ERR PFX "cnic_unregister_driver: Type %d " - "still has devices registered\n", ulp_type); - read_unlock(&cnic_dev_lock); - goto out_unlock; - } - } - read_unlock(&cnic_dev_lock); - - rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL); - - mutex_unlock(&cnic_lock); - synchronize_rcu(); - 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 >= MAX_CNIC_ULP_TYPE) { - printk(KERN_ERR PFX "cnic_register_device: Bad type %d\n", - ulp_type); - return -EINVAL; - } - mutex_lock(&cnic_lock); - if (cnic_ulp_tbl[ulp_type] == NULL) { - printk(KERN_ERR PFX "cnic_register_device: Driver with type %d " - "has not been registered\n", ulp_type); - mutex_unlock(&cnic_lock); - return -EAGAIN; - } - if (rcu_dereference(cp->ulp_ops[ulp_type])) { - printk(KERN_ERR PFX "cnic_register_device: Type %d has already " - "been registered to this device\n", 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; - - if (ulp_type >= MAX_CNIC_ULP_TYPE) { - printk(KERN_ERR PFX "cnic_unregister_device: Bad type %d\n", - 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 { - printk(KERN_ERR PFX "cnic_unregister_device: device not " - "registered to this ulp type %d\n", ulp_type); - mutex_unlock(&cnic_lock); - return -EINVAL; - } - mutex_unlock(&cnic_lock); - - synchronize_rcu(); - - 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]) { - pci_free_consistent(dev->pcidev, BCM_PAGE_SIZE, - dma->pg_arr[i], dma->pg_map_arr[i]); - dma->pg_arr[i] = NULL; - } - } - if (dma->pgtbl) { - pci_free_consistent(dev->pcidev, 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 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] = pci_alloc_consistent(dev->pcidev, - BCM_PAGE_SIZE, - &dma->pg_map_arr[i]); - 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 = pci_alloc_consistent(dev->pcidev, dma->pgtbl_size, - &dma->pgtbl_map); - 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_resc(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - int i = 0; - - if (cp->cnic_uinfo) { - cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); - while (cp->uio_dev != -1 && i < 15) { - msleep(100); - i++; - } - uio_unregister_device(cp->cnic_uinfo); - kfree(cp->cnic_uinfo); - cp->cnic_uinfo = NULL; - } - - if (cp->l2_buf) { - pci_free_consistent(dev->pcidev, cp->l2_buf_size, - cp->l2_buf, cp->l2_buf_map); - cp->l2_buf = NULL; - } - - if (cp->l2_ring) { - pci_free_consistent(dev->pcidev, cp->l2_ring_size, - cp->l2_ring, cp->l2_ring_map); - cp->l2_ring = NULL; - } - - for (i = 0; i < cp->ctx_blks; i++) { - if (cp->ctx_arr[i].ctx) { - pci_free_consistent(dev->pcidev, cp->ctx_blk_size, - cp->ctx_arr[i].ctx, - cp->ctx_arr[i].mapping); - cp->ctx_arr[i].ctx = NULL; - } - } - 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->kcq_info); - kfree(cp->iscsi_tbl); - cp->iscsi_tbl = NULL; - kfree(cp->ctx_tbl); - cp->ctx_tbl = NULL; - - cnic_free_id_tbl(&cp->cid_tbl); -} - -static int cnic_alloc_context(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - - if (CHIP_NUM(cp) == CHIP_NUM_5709) { - int i, k, arr_size; - - cp->ctx_blk_size = BCM_PAGE_SIZE; - cp->cids_per_blk = BCM_PAGE_SIZE / 128; - arr_size = BNX2_MAX_CID / cp->cids_per_blk * - sizeof(struct cnic_ctx); - cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL); - if (cp->ctx_arr == NULL) - return -ENOMEM; - - k = 0; - for (i = 0; i < 2; i++) { - u32 j, reg, off, lo, hi; - - if (i == 0) - off = BNX2_PG_CTX_MAP; - else - off = BNX2_ISCSI_CTX_MAP; - - reg = cnic_reg_rd_ind(dev, off); - lo = reg >> 16; - hi = reg & 0xffff; - for (j = lo; j < hi; j += cp->cids_per_blk, k++) - cp->ctx_arr[k].cid = j; - } - - cp->ctx_blks = k; - if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) { - cp->ctx_blks = 0; - return -ENOMEM; - } - - for (i = 0; i < cp->ctx_blks; i++) { - cp->ctx_arr[i].ctx = - pci_alloc_consistent(dev->pcidev, BCM_PAGE_SIZE, - &cp->ctx_arr[i].mapping); - if (cp->ctx_arr[i].ctx == NULL) - return -ENOMEM; - } - } - return 0; -} - -static int cnic_alloc_bnx2_resc(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct uio_info *uinfo; - int ret; - - ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1); - if (ret) - goto error; - cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr; - - ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1); - if (ret) - goto error; - cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr; - - ret = cnic_alloc_context(dev); - if (ret) - goto error; - - cp->l2_ring_size = 2 * BCM_PAGE_SIZE; - cp->l2_ring = pci_alloc_consistent(dev->pcidev, cp->l2_ring_size, - &cp->l2_ring_map); - if (!cp->l2_ring) - goto error; - - cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size; - cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size); - cp->l2_buf = pci_alloc_consistent(dev->pcidev, cp->l2_buf_size, - &cp->l2_buf_map); - if (!cp->l2_buf) - goto error; - - uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC); - if (!uinfo) - goto error; - - 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; - - uinfo->mem[1].addr = (unsigned long) cp->status_blk & 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->mem[1].memtype = UIO_MEM_LOGICAL; - - uinfo->mem[2].addr = (unsigned long) cp->l2_ring; - uinfo->mem[2].size = cp->l2_ring_size; - uinfo->mem[2].memtype = UIO_MEM_LOGICAL; - - uinfo->mem[3].addr = (unsigned long) cp->l2_buf; - uinfo->mem[3].size = cp->l2_buf_size; - uinfo->mem[3].memtype = UIO_MEM_LOGICAL; - - uinfo->name = "bnx2_cnic"; - uinfo->version = CNIC_MODULE_VERSION; - uinfo->irq = UIO_IRQ_CUSTOM; - - uinfo->open = cnic_uio_open; - uinfo->release = cnic_uio_close; - - uinfo->priv = dev; - - ret = uio_register_device(&dev->pcidev->dev, uinfo); - if (ret) { - kfree(uinfo); - goto error; - } - - cp->cnic_uinfo = uinfo; - - return 0; - -error: - cnic_free_resc(dev); - return ret; -} - -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) && - !(cp->cnic_local_flags & CNIC_LCL_FL_KWQ_INIT)) { - spin_unlock_bh(&cp->cnic_ulp_lock); - return -EAGAIN; - } - - cp->cnic_local_flags &= ~CNIC_LCL_FL_KWQ_INIT; - - 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 service_kcqes(struct cnic_dev *dev, int num_cqes) -{ - struct cnic_local *cp = dev->cnic_priv; - int i, j; - - i = 0; - j = 1; - while (num_cqes) { - struct cnic_ulp_ops *ulp_ops; - int ulp_type; - u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag; - u32 kcqe_layer = kcqe_op_flag & KCQE_FLAGS_LAYER_MASK; - - if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION)) - cnic_kwq_completion(dev, 1); - - while (j < num_cqes) { - u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag; - - if ((next_op & KCQE_FLAGS_LAYER_MASK) != kcqe_layer) - break; - - if (unlikely(next_op & KCQE_RAMROD_COMPLETION)) - cnic_kwq_completion(dev, 1); - j++; - } - - if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA) - ulp_type = CNIC_ULP_RDMA; - else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI) - ulp_type = CNIC_ULP_ISCSI; - else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4) - ulp_type = CNIC_ULP_L4; - else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2) - goto end; - else { - printk(KERN_ERR PFX "%s: Unknown type of KCQE(0x%x)\n", - dev->netdev->name, 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; - } - return; -} - -static u16 cnic_bnx2_next_idx(u16 idx) -{ - return idx + 1; -} - -static u16 cnic_bnx2_hw_idx(u16 idx) -{ - return idx; -} - -static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod) -{ - struct cnic_local *cp = dev->cnic_priv; - u16 i, ri, last; - struct kcqe *kcqe; - int kcqe_cnt = 0, last_cnt = 0; - - i = ri = last = *sw_prod; - ri &= MAX_KCQ_IDX; - - while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) { - kcqe = &cp->kcq[KCQ_PG(ri)][KCQ_IDX(ri)]; - cp->completed_kcq[kcqe_cnt++] = kcqe; - i = cp->next_idx(i); - ri = i & MAX_KCQ_IDX; - if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) { - last_cnt = kcqe_cnt; - last = i; - } - } - - *sw_prod = last; - return last_cnt; -} - -static void cnic_chk_bnx2_pkt_rings(struct cnic_local *cp) -{ - u16 rx_cons = *cp->rx_cons_ptr; - u16 tx_cons = *cp->tx_cons_ptr; - - if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) { - cp->tx_cons = tx_cons; - cp->rx_cons = rx_cons; - uio_event_notify(cp->cnic_uinfo); - } -} - -static int cnic_service_bnx2(void *data, void *status_blk) -{ - struct cnic_dev *dev = data; - struct status_block *sblk = status_blk; - struct cnic_local *cp = dev->cnic_priv; - u32 status_idx = sblk->status_idx; - u16 hw_prod, sw_prod; - int kcqe_cnt; - - if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) - return status_idx; - - cp->kwq_con_idx = *cp->kwq_con_idx_ptr; - - hw_prod = sblk->status_completion_producer_index; - sw_prod = cp->kcq_prod_idx; - while (sw_prod != hw_prod) { - kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); - if (kcqe_cnt == 0) - goto done; - - service_kcqes(dev, kcqe_cnt); - - /* Tell compiler that status_blk fields can change. */ - barrier(); - if (status_idx != sblk->status_idx) { - status_idx = sblk->status_idx; - cp->kwq_con_idx = *cp->kwq_con_idx_ptr; - hw_prod = sblk->status_completion_producer_index; - } else - break; - } - -done: - CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); - - cp->kcq_prod_idx = sw_prod; - - cnic_chk_bnx2_pkt_rings(cp); - return status_idx; -} - -static void cnic_service_bnx2_msix(unsigned long data) -{ - struct cnic_dev *dev = (struct cnic_dev *) data; - struct cnic_local *cp = dev->cnic_priv; - struct status_block_msix *status_blk = cp->bnx2_status_blk; - u32 status_idx = status_blk->status_idx; - u16 hw_prod, sw_prod; - int kcqe_cnt; - - cp->kwq_con_idx = status_blk->status_cmd_consumer_index; - - hw_prod = status_blk->status_completion_producer_index; - sw_prod = cp->kcq_prod_idx; - while (sw_prod != hw_prod) { - kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod); - if (kcqe_cnt == 0) - goto done; - - service_kcqes(dev, kcqe_cnt); - - /* Tell compiler that status_blk fields can change. */ - barrier(); - if (status_idx != status_blk->status_idx) { - status_idx = status_blk->status_idx; - cp->kwq_con_idx = status_blk->status_cmd_consumer_index; - hw_prod = status_blk->status_completion_producer_index; - } else - break; - } - -done: - CNIC_WR16(dev, cp->kcq_io_addr, sw_prod); - cp->kcq_prod_idx = sw_prod; - - cnic_chk_bnx2_pkt_rings(cp); - - cp->last_status_idx = status_idx; - CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | - BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); -} - -static irqreturn_t cnic_irq(int irq, void *dev_instance) -{ - struct cnic_dev *dev = dev_instance; - struct cnic_local *cp = dev->cnic_priv; - u16 prod = cp->kcq_prod_idx & MAX_KCQ_IDX; - - if (cp->ack_int) - cp->ack_int(dev); - - prefetch(cp->status_blk); - prefetch(&cp->kcq[KCQ_PG(prod)][KCQ_IDX(prod)]); - - if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) - tasklet_schedule(&cp->cnic_irq_task); - - return IRQ_HANDLED; -} - -static void cnic_ulp_stop(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - int if_type; - - rcu_read_lock(); - for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { - struct cnic_ulp_ops *ulp_ops; - - ulp_ops = rcu_dereference(cp->ulp_ops[if_type]); - if (!ulp_ops) - continue; - - if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type])) - ulp_ops->cnic_stop(cp->ulp_handle[if_type]); - } - rcu_read_unlock(); -} - -static void cnic_ulp_start(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - int if_type; - - rcu_read_lock(); - for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { - struct cnic_ulp_ops *ulp_ops; - - ulp_ops = rcu_dereference(cp->ulp_ops[if_type]); - if (!ulp_ops || !ulp_ops->cnic_start) - continue; - - if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type])) - ulp_ops->cnic_start(cp->ulp_handle[if_type]); - } - rcu_read_unlock(); -} - -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); - mutex_lock(&cnic_lock); - - cnic_ulp_stop(dev); - cnic_stop_hw(dev); - - mutex_unlock(&cnic_lock); - cnic_put(dev); - break; - case CNIC_CTL_START_CMD: - cnic_hold(dev); - mutex_lock(&cnic_lock); - - if (!cnic_start_hw(dev)) - cnic_ulp_start(dev); - - mutex_unlock(&cnic_lock); - cnic_put(dev); - break; - default: - return -EINVAL; - } - return 0; -} - -static void cnic_ulp_init(struct cnic_dev *dev) -{ - int i; - struct cnic_local *cp = dev->cnic_priv; - - rcu_read_lock(); - for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { - struct cnic_ulp_ops *ulp_ops; - - ulp_ops = rcu_dereference(cnic_ulp_tbl[i]); - if (!ulp_ops || !ulp_ops->cnic_init) - continue; - - if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i])) - ulp_ops->cnic_init(dev); - - } - rcu_read_unlock(); -} - -static void cnic_ulp_exit(struct cnic_dev *dev) -{ - int i; - struct cnic_local *cp = dev->cnic_priv; - - rcu_read_lock(); - for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) { - struct cnic_ulp_ops *ulp_ops; - - ulp_ops = rcu_dereference(cnic_ulp_tbl[i]); - if (!ulp_ops || !ulp_ops->cnic_exit) - continue; - - if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i])) - ulp_ops->cnic_exit(dev); - - } - rcu_read_unlock(); -} - -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_count = DEF_IPID_COUNT; - l4kwqe->host_opaque = csk->l5_cid; - - if (csk->vlan_id) { - l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING; - l4kwqe->vlan_tag = csk->vlan_id; - l4kwqe->l2hdr_nbytes += 4; - } - - return dev->submit_kwqes(dev, wqes, 1); -} - -static int cnic_cm_update_pg(struct cnic_sock *csk) -{ - struct cnic_dev *dev = csk->dev; - struct l4_kwq_update_pg *l4kwqe; - struct kwqe *wqes[1]; - - l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1; - memset(l4kwqe, 0, sizeof(*l4kwqe)); - wqes[0] = (struct kwqe *) l4kwqe; - - l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG; - l4kwqe->flags = - L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT; - l4kwqe->pg_cid = csk->pg_cid; - - l4kwqe->da0 = csk->ha[0]; - l4kwqe->da1 = csk->ha[1]; - l4kwqe->da2 = csk->ha[2]; - l4kwqe->da3 = csk->ha[3]; - l4kwqe->da4 = csk->ha[4]; - l4kwqe->da5 = csk->ha[5]; - - l4kwqe->pg_host_opaque = csk->l5_cid; - l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA; - - return dev->submit_kwqes(dev, wqes, 1); -} - -static int cnic_cm_upload_pg(struct cnic_sock *csk) -{ - struct cnic_dev *dev = csk->dev; - struct l4_kwq_upload *l4kwqe; - struct kwqe *wqes[1]; - - l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1; - memset(l4kwqe, 0, sizeof(*l4kwqe)); - wqes[0] = (struct kwqe *) l4kwqe; - - l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG; - l4kwqe->flags = - L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT; - l4kwqe->cid = csk->pg_cid; - - return dev->submit_kwqes(dev, wqes, 1); -} - -static int cnic_cm_conn_req(struct cnic_sock *csk) -{ - struct cnic_dev *dev = csk->dev; - struct l4_kwq_connect_req1 *l4kwqe1; - struct l4_kwq_connect_req2 *l4kwqe2; - struct l4_kwq_connect_req3 *l4kwqe3; - struct kwqe *wqes[3]; - u8 tcp_flags = 0; - int num_wqes = 2; - - l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1; - l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2; - l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3; - memset(l4kwqe1, 0, sizeof(*l4kwqe1)); - memset(l4kwqe2, 0, sizeof(*l4kwqe2)); - memset(l4kwqe3, 0, sizeof(*l4kwqe3)); - - l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3; - l4kwqe3->flags = - L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT; - l4kwqe3->ka_timeout = csk->ka_timeout; - l4kwqe3->ka_interval = csk->ka_interval; - l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count; - l4kwqe3->tos = csk->tos; - l4kwqe3->ttl = csk->ttl; - l4kwqe3->snd_seq_scale = csk->snd_seq_scale; - l4kwqe3->pmtu = csk->mtu; - l4kwqe3->rcv_buf = csk->rcv_buf; - l4kwqe3->snd_buf = csk->snd_buf; - l4kwqe3->seed = csk->seed; - - wqes[0] = (struct kwqe *) l4kwqe1; - if (test_bit(SK_F_IPV6, &csk->flags)) { - wqes[1] = (struct kwqe *) l4kwqe2; - wqes[2] = (struct kwqe *) l4kwqe3; - num_wqes = 3; - - l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6; - l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2; - l4kwqe2->flags = - L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT | - L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT; - l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]); - l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]); - l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]); - l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]); - l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]); - l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]); - l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) - - sizeof(struct tcphdr); - } else { - wqes[1] = (struct kwqe *) l4kwqe3; - l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) - - sizeof(struct tcphdr); - } - - l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1; - l4kwqe1->flags = - (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) | - L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT; - l4kwqe1->cid = csk->cid; - l4kwqe1->pg_cid = csk->pg_cid; - l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]); - l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]); - l4kwqe1->src_port = be16_to_cpu(csk->src_port); - l4kwqe1->dst_port = be16_to_cpu(csk->dst_port); - if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK) - tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK; - if (csk->tcp_flags & SK_TCP_KEEP_ALIVE) - tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE; - if (csk->tcp_flags & SK_TCP_NAGLE) - tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE; - if (csk->tcp_flags & SK_TCP_TIMESTAMP) - tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP; - if (csk->tcp_flags & SK_TCP_SACK) - tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK; - if (csk->tcp_flags & SK_TCP_SEG_SCALING) - tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING; - - l4kwqe1->tcp_flags = tcp_flags; - - return dev->submit_kwqes(dev, wqes, num_wqes); -} - -static int cnic_cm_close_req(struct cnic_sock *csk) -{ - struct cnic_dev *dev = csk->dev; - struct l4_kwq_close_req *l4kwqe; - struct kwqe *wqes[1]; - - l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2; - memset(l4kwqe, 0, sizeof(*l4kwqe)); - wqes[0] = (struct kwqe *) l4kwqe; - - l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE; - l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT; - l4kwqe->cid = csk->cid; - - return dev->submit_kwqes(dev, wqes, 1); -} - -static int cnic_cm_abort_req(struct cnic_sock *csk) -{ - struct cnic_dev *dev = csk->dev; - struct l4_kwq_reset_req *l4kwqe; - struct kwqe *wqes[1]; - - l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2; - memset(l4kwqe, 0, sizeof(*l4kwqe)); - wqes[0] = (struct kwqe *) l4kwqe; - - l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET; - l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT; - l4kwqe->cid = csk->cid; - - return dev->submit_kwqes(dev, wqes, 1); -} - -static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid, - u32 l5_cid, struct cnic_sock **csk, void *context) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_sock *csk1; - - if (l5_cid >= MAX_CM_SK_TBL_SZ) - return -EINVAL; - - csk1 = &cp->csk_tbl[l5_cid]; - if (atomic_read(&csk1->ref_count)) - return -EAGAIN; - - if (test_and_set_bit(SK_F_INUSE, &csk1->flags)) - return -EBUSY; - - csk1->dev = dev; - csk1->cid = cid; - csk1->l5_cid = l5_cid; - csk1->ulp_type = ulp_type; - csk1->context = context; - - csk1->ka_timeout = DEF_KA_TIMEOUT; - csk1->ka_interval = DEF_KA_INTERVAL; - csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT; - csk1->tos = DEF_TOS; - csk1->ttl = DEF_TTL; - csk1->snd_seq_scale = DEF_SND_SEQ_SCALE; - csk1->rcv_buf = DEF_RCV_BUF; - csk1->snd_buf = DEF_SND_BUF; - csk1->seed = DEF_SEED; - - *csk = csk1; - return 0; -} - -static void cnic_cm_cleanup(struct cnic_sock *csk) -{ - if (csk->src_port) { - struct cnic_dev *dev = csk->dev; - struct cnic_local *cp = dev->cnic_priv; - - cnic_free_id(&cp->csk_port_tbl, csk->src_port); - csk->src_port = 0; - } -} - -static void cnic_close_conn(struct cnic_sock *csk) -{ - if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) { - cnic_cm_upload_pg(csk); - clear_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); - } - cnic_cm_cleanup(csk); -} - -static int cnic_cm_destroy(struct cnic_sock *csk) -{ - if (!cnic_in_use(csk)) - return -EINVAL; - - csk_hold(csk); - clear_bit(SK_F_INUSE, &csk->flags); - smp_mb__after_clear_bit(); - while (atomic_read(&csk->ref_count) != 1) - msleep(1); - cnic_cm_cleanup(csk); - - csk->flags = 0; - csk_put(csk); - return 0; -} - -static inline u16 cnic_get_vlan(struct net_device *dev, - struct net_device **vlan_dev) -{ - if (dev->priv_flags & IFF_802_1Q_VLAN) { - *vlan_dev = vlan_dev_real_dev(dev); - return vlan_dev_vlan_id(dev); - } - *vlan_dev = dev; - return 0; -} - -static int cnic_get_v4_route(struct sockaddr_in *dst_addr, - struct dst_entry **dst) -{ -#if defined(CONFIG_INET) - struct flowi fl; - int err; - struct rtable *rt; - - memset(&fl, 0, sizeof(fl)); - fl.nl_u.ip4_u.daddr = dst_addr->sin_addr.s_addr; - - err = ip_route_output_key(&init_net, &rt, &fl); - if (!err) - *dst = &rt->u.dst; - return err; -#else - return -ENETUNREACH; -#endif -} - -static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr, - struct dst_entry **dst) -{ -#if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) - struct flowi fl; - - memset(&fl, 0, sizeof(fl)); - ipv6_addr_copy(&fl.fl6_dst, &dst_addr->sin6_addr); - if (ipv6_addr_type(&fl.fl6_dst) & IPV6_ADDR_LINKLOCAL) - fl.oif = dst_addr->sin6_scope_id; - - *dst = ip6_route_output(&init_net, NULL, &fl); - if (*dst) - return 0; -#endif - - return -ENETUNREACH; -} - -static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr, - int ulp_type) -{ - struct cnic_dev *dev = NULL; - struct dst_entry *dst; - struct net_device *netdev = NULL; - int err = -ENETUNREACH; - - if (dst_addr->sin_family == AF_INET) - err = cnic_get_v4_route(dst_addr, &dst); - else if (dst_addr->sin_family == AF_INET6) { - struct sockaddr_in6 *dst_addr6 = - (struct sockaddr_in6 *) dst_addr; - - err = cnic_get_v6_route(dst_addr6, &dst); - } else - return NULL; - - if (err) - return NULL; - - if (!dst->dev) - goto done; - - cnic_get_vlan(dst->dev, &netdev); - - dev = cnic_from_netdev(netdev); - -done: - dst_release(dst); - if (dev) - cnic_put(dev); - return dev; -} - -static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr) -{ - struct cnic_dev *dev = csk->dev; - struct cnic_local *cp = dev->cnic_priv; - - return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk); -} - -static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr) -{ - struct cnic_dev *dev = csk->dev; - struct cnic_local *cp = dev->cnic_priv; - int is_v6, err, rc = -ENETUNREACH; - struct dst_entry *dst; - 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) { -#if defined(CONFIG_IPV6) || (defined(CONFIG_IPV6_MODULE) && defined(MODULE)) - set_bit(SK_F_IPV6, &csk->flags); - err = cnic_get_v6_route(&saddr->remote.v6, &dst); - if (err) - return err; - - if (!dst || dst->error || !dst->dev) - goto err_out; - - 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 - return rc; -#endif - - } else { - err = cnic_get_v4_route(&saddr->remote.v4, &dst); - if (err) - return err; - - if (!dst || dst->error || !dst->dev) - goto err_out; - - 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 = cnic_get_vlan(dst->dev, &realdev); - if (realdev != dev->netdev) - goto err_out; - - 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; - - csk->mtu = dst_mtu(dst); - rc = 0; - -err_out: - dst_release(dst); - return rc; -} - -static void cnic_init_csk_state(struct cnic_sock *csk) -{ - csk->state = 0; - clear_bit(SK_F_OFFLD_SCHED, &csk->flags); - clear_bit(SK_F_CLOSING, &csk->flags); -} - -static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr) -{ - int err = 0; - - if (!cnic_in_use(csk)) - return -EINVAL; - - if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags)) - return -EINVAL; - - cnic_init_csk_state(csk); - - err = cnic_get_route(csk, saddr); - if (err) - goto err_out; - - err = cnic_resolve_addr(csk, saddr); - if (!err) - return 0; - -err_out: - clear_bit(SK_F_CONNECT_START, &csk->flags); - return err; -} - -static int cnic_cm_abort(struct cnic_sock *csk) -{ - struct cnic_local *cp = csk->dev->cnic_priv; - u32 opcode; - - if (!cnic_in_use(csk)) - return -EINVAL; - - if (cnic_abort_prep(csk)) - return cnic_cm_abort_req(csk); - - /* Getting here means that we haven't started connect, or - * connect was not successful. - */ - - csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; - if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) - opcode = csk->state; - else - opcode = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD; - cp->close_conn(csk, opcode); - - return 0; -} - -static int cnic_cm_close(struct cnic_sock *csk) -{ - if (!cnic_in_use(csk)) - return -EINVAL; - - if (cnic_close_prep(csk)) { - csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP; - return cnic_cm_close_req(csk); - } - return 0; -} - -static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk, - u8 opcode) -{ - struct cnic_ulp_ops *ulp_ops; - int ulp_type = csk->ulp_type; - - rcu_read_lock(); - ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); - if (ulp_ops) { - if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE) - ulp_ops->cm_connect_complete(csk); - else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) - ulp_ops->cm_close_complete(csk); - else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) - ulp_ops->cm_remote_abort(csk); - else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) - ulp_ops->cm_abort_complete(csk); - else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED) - ulp_ops->cm_remote_close(csk); - } - rcu_read_unlock(); -} - -static int cnic_cm_set_pg(struct cnic_sock *csk) -{ - if (cnic_offld_prep(csk)) { - if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) - cnic_cm_update_pg(csk); - else - cnic_cm_offload_pg(csk); - } - return 0; -} - -static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe) -{ - struct cnic_local *cp = dev->cnic_priv; - u32 l5_cid = kcqe->pg_host_opaque; - u8 opcode = kcqe->op_code; - struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; - - csk_hold(csk); - if (!cnic_in_use(csk)) - goto done; - - if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { - clear_bit(SK_F_OFFLD_SCHED, &csk->flags); - goto done; - } - 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 L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE: - if (l4kcqe->status == 0) - set_bit(SK_F_OFFLD_COMPLETE, &csk->flags); - - smp_mb__before_clear_bit(); - clear_bit(SK_F_OFFLD_SCHED, &csk->flags); - cnic_cm_upcall(cp, csk, opcode); - break; - - case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED: - if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) - csk->state = opcode; - /* fall through */ - case L4_KCQE_OPCODE_VALUE_CLOSE_COMP: - case L4_KCQE_OPCODE_VALUE_RESET_COMP: - cp->close_conn(csk, opcode); - break; - - case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED: - cnic_cm_upcall(cp, csk, opcode); - break; - } - csk_put(csk); -} - -static void cnic_cm_indicate_kcqe(void *data, struct kcqe *kcqe[], u32 num) -{ - struct cnic_dev *dev = data; - int i; - - for (i = 0; i < num; i++) - cnic_cm_process_kcqe(dev, kcqe[i]); -} - -static struct cnic_ulp_ops cm_ulp_ops = { - .indicate_kcqes = cnic_cm_indicate_kcqe, -}; - -static void cnic_cm_free_mem(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - - kfree(cp->csk_tbl); - cp->csk_tbl = NULL; - cnic_free_id_tbl(&cp->csk_port_tbl); -} - -static int cnic_cm_alloc_mem(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - - cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ, - GFP_KERNEL); - if (!cp->csk_tbl) - return -ENOMEM; - - if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE, - CNIC_LOCAL_PORT_MIN)) { - cnic_cm_free_mem(dev); - return -ENOMEM; - } - return 0; -} - -static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode) -{ - if ((opcode == csk->state) || - (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED && - csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP)) { - if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) - return 1; - } - return 0; -} - -static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode) -{ - struct cnic_dev *dev = csk->dev; - struct cnic_local *cp = dev->cnic_priv; - - clear_bit(SK_F_CONNECT_START, &csk->flags); - if (cnic_ready_to_close(csk, opcode)) { - cnic_close_conn(csk); - cnic_cm_upcall(cp, csk, opcode); - } -} - -static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev) -{ -} - -static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev) -{ - u32 seed; - - get_random_bytes(&seed, 4); - cnic_ctx_wr(dev, 45, 0, seed); - return 0; -} - -static int cnic_cm_open(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - int err; - - err = cnic_cm_alloc_mem(dev); - if (err) - return err; - - err = cp->start_cm(dev); - - if (err) - goto err_out; - - dev->cm_create = cnic_cm_create; - dev->cm_destroy = cnic_cm_destroy; - dev->cm_connect = cnic_cm_connect; - dev->cm_abort = cnic_cm_abort; - dev->cm_close = cnic_cm_close; - dev->cm_select_dev = cnic_cm_select_dev; - - cp->ulp_handle[CNIC_ULP_L4] = dev; - rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops); - return 0; - -err_out: - cnic_cm_free_mem(dev); - return err; -} - -static int cnic_cm_shutdown(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - int i; - - cp->stop_cm(dev); - - if (!cp->csk_tbl) - return 0; - - for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) { - struct cnic_sock *csk = &cp->csk_tbl[i]; - - clear_bit(SK_F_INUSE, &csk->flags); - cnic_cm_cleanup(csk); - } - cnic_cm_free_mem(dev); - - return 0; -} - -static void cnic_init_context(struct cnic_dev *dev, u32 cid) -{ - struct cnic_local *cp = dev->cnic_priv; - u32 cid_addr; - int i; - - if (CHIP_NUM(cp) == CHIP_NUM_5709) - return; - - cid_addr = GET_CID_ADDR(cid); - - for (i = 0; i < CTX_SIZE; i += 4) - cnic_ctx_wr(dev, cid_addr, i, 0); -} - -static int cnic_setup_5709_context(struct cnic_dev *dev, int valid) -{ - struct cnic_local *cp = dev->cnic_priv; - int ret = 0, i; - u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0; - - if (CHIP_NUM(cp) != CHIP_NUM_5709) - return 0; - - for (i = 0; i < cp->ctx_blks; i++) { - int j; - u32 idx = cp->ctx_arr[i].cid / cp->cids_per_blk; - u32 val; - - memset(cp->ctx_arr[i].ctx, 0, BCM_PAGE_SIZE); - - CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0, - (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit); - CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1, - (u64) cp->ctx_arr[i].mapping >> 32); - CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx | - BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ); - for (j = 0; j < 10; j++) { - - val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL); - if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ)) - break; - udelay(5); - } - if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) { - ret = -EBUSY; - break; - } - } - return ret; -} - -static void cnic_free_irq(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - - if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { - cp->disable_int_sync(dev); - tasklet_disable(&cp->cnic_irq_task); - free_irq(ethdev->irq_arr[0].vector, dev); - } -} - -static int cnic_init_bnx2_irq(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - - if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { - int err, i = 0; - int sblk_num = cp->status_blk_num; - u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) + - BNX2_HC_SB_CONFIG_1; - - CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT); - - CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8); - CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220); - CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220); - - cp->bnx2_status_blk = cp->status_blk; - cp->last_status_idx = cp->bnx2_status_blk->status_idx; - tasklet_init(&cp->cnic_irq_task, &cnic_service_bnx2_msix, - (unsigned long) dev); - err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, - "cnic", dev); - if (err) { - tasklet_disable(&cp->cnic_irq_task); - return err; - } - while (cp->bnx2_status_blk->status_completion_producer_index && - i < 10) { - CNIC_WR(dev, BNX2_HC_COALESCE_NOW, - 1 << (11 + sblk_num)); - udelay(10); - i++; - barrier(); - } - if (cp->bnx2_status_blk->status_completion_producer_index) { - cnic_free_irq(dev); - goto failed; - } - - } else { - struct status_block *sblk = cp->status_blk; - 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: - printk(KERN_ERR PFX "%s: " "KCQ index not resetting to 0.\n", - dev->netdev->name); - return -EBUSY; -} - -static void cnic_enable_bnx2_int(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - - if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) - return; - - CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | - BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); -} - -static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - - if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) - return; - - CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | - BNX2_PCICFG_INT_ACK_CMD_MASK_INT); - CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD); - synchronize_irq(ethdev->irq_arr[0].vector); -} - -static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - u32 cid_addr, tx_cid, sb_id; - u32 val, offset0, offset1, offset2, offset3; - int i; - struct tx_bd *txbd; - dma_addr_t buf_map; - struct status_block *s_blk = cp->status_blk; - - sb_id = cp->status_blk_num; - tx_cid = 20; - cnic_init_context(dev, tx_cid); - cnic_init_context(dev, tx_cid + 1); - cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2; - if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { - struct status_block_msix *sblk = cp->status_blk; - - tx_cid = TX_TSS_CID + sb_id - 1; - cnic_init_context(dev, tx_cid); - CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) | - (TX_TSS_CID << 7)); - cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index; - } - cp->tx_cons = *cp->tx_cons_ptr; - - cid_addr = GET_CID_ADDR(tx_cid); - if (CHIP_NUM(cp) == CHIP_NUM_5709) { - u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40; - - for (i = 0; i < PHY_CTX_SIZE; i += 4) - cnic_ctx_wr(dev, cid_addr2, i, 0); - - offset0 = BNX2_L2CTX_TYPE_XI; - offset1 = BNX2_L2CTX_CMD_TYPE_XI; - offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI; - offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI; - } else { - offset0 = BNX2_L2CTX_TYPE; - offset1 = BNX2_L2CTX_CMD_TYPE; - offset2 = BNX2_L2CTX_TBDR_BHADDR_HI; - offset3 = BNX2_L2CTX_TBDR_BHADDR_LO; - } - val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2; - cnic_ctx_wr(dev, cid_addr, offset0, val); - - val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16); - cnic_ctx_wr(dev, cid_addr, offset1, val); - - txbd = (struct tx_bd *) cp->l2_ring; - - buf_map = cp->l2_buf_map; - for (i = 0; i < MAX_TX_DESC_CNT; i++, txbd++) { - txbd->tx_bd_haddr_hi = (u64) buf_map >> 32; - txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff; - } - val = (u64) cp->l2_ring_map >> 32; - cnic_ctx_wr(dev, cid_addr, offset2, val); - txbd->tx_bd_haddr_hi = val; - - val = (u64) cp->l2_ring_map & 0xffffffff; - cnic_ctx_wr(dev, cid_addr, offset3, val); - txbd->tx_bd_haddr_lo = val; -} - -static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - u32 cid_addr, sb_id, val, coal_reg, coal_val; - int i; - struct rx_bd *rxbd; - struct status_block *s_blk = cp->status_blk; - - 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; - - 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_STATUSB_NUM_SHIFT; - else - val = BNX2_L2CTX_STATUSB_NUM(sb_id); - cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val); - - rxbd = (struct rx_bd *) (cp->l2_ring + BCM_PAGE_SIZE); - for (i = 0; i < MAX_RX_DESC_CNT; i++, rxbd++) { - dma_addr_t buf_map; - int n = (i % cp->l2_rx_ring_size) + 1; - - buf_map = cp->l2_buf_map + (n * cp->l2_single_buf_size); - rxbd->rx_bd_len = cp->l2_single_buf_size; - rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END; - rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32; - rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff; - } - val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) >> 32; - cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val); - rxbd->rx_bd_haddr_hi = val; - - val = (u64) (cp->l2_ring_map + BCM_PAGE_SIZE) & 0xffffffff; - cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_LO, val); - rxbd->rx_bd_haddr_lo = val; - - val = cnic_reg_rd_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD); - cnic_reg_wr_ind(dev, BNX2_RXP_SCRATCH_RXP_FLOOD, val | (1 << 2)); -} - -static void cnic_shutdown_bnx2_rx_ring(struct cnic_dev *dev) -{ - struct kwqe *wqes[1], l2kwqe; - - memset(&l2kwqe, 0, sizeof(l2kwqe)); - wqes[0] = &l2kwqe; - l2kwqe.kwqe_op_flag = (L2_LAYER_CODE << KWQE_FLAGS_LAYER_SHIFT) | - (L2_KWQE_OPCODE_VALUE_FLUSH << - KWQE_OPCODE_SHIFT) | 2; - dev->submit_kwqes(dev, wqes, 1); -} - -static void cnic_set_bnx2_mac(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - u32 val; - - val = cp->func << 2; - - cp->shmem_base = cnic_reg_rd_ind(dev, BNX2_SHM_HDR_ADDR_0 + val); - - val = cnic_reg_rd_ind(dev, cp->shmem_base + - BNX2_PORT_HW_CFG_ISCSI_MAC_UPPER); - dev->mac_addr[0] = (u8) (val >> 8); - dev->mac_addr[1] = (u8) val; - - CNIC_WR(dev, BNX2_EMAC_MAC_MATCH4, val); - - val = cnic_reg_rd_ind(dev, cp->shmem_base + - BNX2_PORT_HW_CFG_ISCSI_MAC_LOWER); - dev->mac_addr[2] = (u8) (val >> 24); - dev->mac_addr[3] = (u8) (val >> 16); - dev->mac_addr[4] = (u8) (val >> 8); - dev->mac_addr[5] = (u8) val; - - CNIC_WR(dev, BNX2_EMAC_MAC_MATCH5, val); - - val = 4 | BNX2_RPM_SORT_USER2_BC_EN; - if (CHIP_NUM(cp) != CHIP_NUM_5709) - val |= BNX2_RPM_SORT_USER2_PROM_VLAN; - - CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0); - CNIC_WR(dev, BNX2_RPM_SORT_USER2, val); - CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA); -} - -static int cnic_start_bnx2_hw(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - struct status_block *sblk = cp->status_blk; - u32 val; - int err; - - cnic_set_bnx2_mac(dev); - - val = CNIC_RD(dev, BNX2_MQ_CONFIG); - val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE; - if (BCM_PAGE_BITS > 12) - val |= (12 - 8) << 4; - else - val |= (BCM_PAGE_BITS - 8) << 4; - - CNIC_WR(dev, BNX2_MQ_CONFIG, val); - - CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8); - CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220); - CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220); - - err = cnic_setup_5709_context(dev, 1); - if (err) - return err; - - cnic_init_context(dev, KWQ_CID); - cnic_init_context(dev, KCQ_CID); - - cp->kwq_cid_addr = GET_CID_ADDR(KWQ_CID); - cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX; - - cp->max_kwq_idx = MAX_KWQ_IDX; - cp->kwq_prod_idx = 0; - cp->kwq_con_idx = 0; - cp->cnic_local_flags |= CNIC_LCL_FL_KWQ_INIT; - - if (CHIP_NUM(cp) == CHIP_NUM_5706 || CHIP_NUM(cp) == CHIP_NUM_5708) - cp->kwq_con_idx_ptr = &sblk->status_rx_quick_consumer_index15; - else - cp->kwq_con_idx_ptr = &sblk->status_cmd_consumer_index; - - /* Initialize the kernel work queue context. */ - val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | - (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; - cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_TYPE, val); - - val = (BCM_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16; - cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); - - val = ((BCM_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT; - cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); - - val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32); - cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); - - val = (u32) cp->kwq_info.pgtbl_map; - cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); - - cp->kcq_cid_addr = GET_CID_ADDR(KCQ_CID); - cp->kcq_io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX; - - cp->kcq_prod_idx = 0; - - /* Initialize the kernel complete queue context. */ - val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | - (BCM_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; - cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_TYPE, val); - - val = (BCM_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16; - cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); - - val = ((BCM_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT; - cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); - - val = (u32) ((u64) cp->kcq_info.pgtbl_map >> 32); - cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); - - val = (u32) cp->kcq_info.pgtbl_map; - cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); - - cp->int_num = 0; - if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { - u32 sb_id = cp->status_blk_num; - u32 sb = BNX2_L2CTX_STATUSB_NUM(sb_id); - - cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT; - cnic_ctx_wr(dev, cp->kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); - cnic_ctx_wr(dev, cp->kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); - } - - /* Enable Commnad Scheduler notification when we write to the - * host producer index of the kernel contexts. */ - CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2); - - /* Enable Command Scheduler notification when we write to either - * the Send Queue or Receive Queue producer indexes of the kernel - * bypass contexts. */ - CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7); - CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7); - - /* Notify COM when the driver post an application buffer. */ - CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000); - - /* Set the CP and COM doorbells. These two processors polls the - * doorbell for a non zero value before running. This must be done - * after setting up the kernel queue contexts. */ - cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1); - cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1); - - cnic_init_bnx2_tx_ring(dev); - cnic_init_bnx2_rx_ring(dev); - - err = cnic_init_bnx2_irq(dev); - if (err) { - printk(KERN_ERR PFX "%s: cnic_init_irq failed\n", - dev->netdev->name); - 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 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; - - err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev); - if (err) { - printk(KERN_ERR PFX "%s: register_cnic failed\n", - dev->netdev->name); - goto err2; - } - - dev->regview = ethdev->io_base; - cp->chip_id = ethdev->chip_id; - pci_dev_get(dev->pcidev); - cp->func = PCI_FUNC(dev->pcidev->devfn); - cp->status_blk = ethdev->irq_arr[0].status_blk; - cp->status_blk_num = ethdev->irq_arr[0].status_blk_num; - - err = cp->alloc_resc(dev); - if (err) { - printk(KERN_ERR PFX "%s: allocate resource failure\n", - dev->netdev->name); - 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: - ethdev->drv_unregister_cnic(dev->netdev); - cp->free_resc(dev); - pci_dev_put(dev->pcidev); -err2: - return err; -} - -static void cnic_stop_bnx2_hw(struct cnic_dev *dev) -{ - struct cnic_local *cp = dev->cnic_priv; - struct cnic_eth_dev *ethdev = cp->ethdev; - - 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); - - ethdev->drv_unregister_cnic(dev->netdev); - - 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; - - 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) - printk(KERN_ERR PFX "%s: Failed waiting for ref count to go" - " to zero.\n", dev->netdev->name); - - printk(KERN_INFO PFX "Removed CNIC device: %s\n", dev->netdev->name); - 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) { - printk(KERN_ERR PFX "%s: allocate dev struct failure\n", - dev->name); - return NULL; - } - - cdev->netdev = dev; - cdev->cnic_priv = (char *)cdev + sizeof(struct cnic_dev); - cdev->register_device = cnic_register_device; - cdev->unregister_device = cnic_unregister_device; - cdev->iscsi_nl_msg_recv = cnic_iscsi_nl_msg_recv; - - cp = cdev->cnic_priv; - cp->dev = cdev; - cp->uio_dev = -1; - cp->l2_single_buf_size = 0x400; - cp->l2_rx_ring_size = 3; - - spin_lock_init(&cp->cnic_ulp_lock); - - printk(KERN_INFO PFX "Added CNIC device: %s\n", dev->name); - - 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_addr(probe); - } - if (!ethdev) - return NULL; - - pdev = ethdev->pdev; - if (!pdev) - return NULL; - - dev_hold(dev); - pci_dev_get(pdev); - if (pdev->device == PCI_DEVICE_ID_NX2_5709 || - pdev->device == PCI_DEVICE_ID_NX2_5709S) { - u8 rev; - - pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); - if (rev < 0x10) { - pci_dev_put(pdev); - goto cnic_err; - } - } - pci_dev_put(pdev); - - cdev = cnic_alloc_dev(dev, pdev); - if (cdev == NULL) - goto cnic_err; - - set_bit(CNIC_F_BNX2_CLASS, &cdev->flags); - cdev->submit_kwqes = cnic_submit_bnx2_kwqes; - - cp = cdev->cnic_priv; - cp->ethdev = ethdev; - cdev->pcidev = pdev; - - cp->cnic_ops = &cnic_bnx2_ops; - cp->start_hw = cnic_start_bnx2_hw; - cp->stop_hw = cnic_stop_bnx2_hw; - cp->setup_pgtbl = cnic_setup_page_tbl; - cp->alloc_resc = cnic_alloc_bnx2_resc; - cp->free_resc = cnic_free_resc; - cp->start_cm = cnic_cm_init_bnx2_hw; - cp->stop_cm = cnic_cm_stop_bnx2_hw; - cp->enable_int = cnic_enable_bnx2_int; - cp->disable_int_sync = cnic_disable_bnx2_int_sync; - cp->close_conn = cnic_close_bnx2_conn; - cp->next_idx = cnic_bnx2_next_idx; - cp->hw_idx = cnic_bnx2_hw_idx; - return cdev; - -cnic_err: - dev_put(dev); - return NULL; -} - -static struct cnic_dev *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 (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); - else if (event == NETDEV_UP) { - mutex_lock(&cnic_lock); - if (!cnic_start_hw(dev)) - cnic_ulp_start(dev); - mutex_unlock(&cnic_lock); - } - - 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) { - mutex_lock(&cnic_lock); - cnic_ulp_stop(dev); - cnic_stop_hw(dev); - mutex_unlock(&cnic_lock); - } else if (event == NETDEV_UNREGISTER) { - write_lock(&cnic_dev_lock); - list_del_init(&dev->list); - write_unlock(&cnic_dev_lock); - - cnic_put(dev); - cnic_free_dev(dev); - goto done; - } - cnic_put(dev); - } -done: - return NOTIFY_DONE; -} - -static struct notifier_block cnic_netdev_notifier = { - .notifier_call = cnic_netdev_event -}; - -static void cnic_release(void) -{ - struct cnic_dev *dev; - - while (!list_empty(&cnic_dev_list)) { - dev = list_entry(cnic_dev_list.next, struct cnic_dev, list); - if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { - cnic_ulp_stop(dev); - cnic_stop_hw(dev); - } - - cnic_ulp_exit(dev); - list_del_init(&dev->list); - cnic_free_dev(dev); - } -} - -static int __init cnic_init(void) -{ - int rc = 0; - - printk(KERN_INFO "%s", version); - - rc = register_netdevice_notifier(&cnic_netdev_notifier); - if (rc) { - cnic_release(); - return rc; - } - - return 0; -} - -static void __exit cnic_exit(void) -{ - unregister_netdevice_notifier(&cnic_netdev_notifier); - cnic_release(); - return; -} - -module_init(cnic_init); -module_exit(cnic_exit); |