| /* 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(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; |
| |
| 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; |
| } |
| |
| static void cnic_uio_stop(void) |
| { |
| struct cnic_dev *dev; |
| |
| read_lock(&cnic_dev_lock); |
| list_for_each_entry(dev, &cnic_dev_list, list) { |
| struct cnic_local *cp = dev->cnic_priv; |
| |
| if (cp->cnic_uinfo) |
| cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); |
| } |
| read_unlock(&cnic_dev_lock); |
| } |
| |
| int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops) |
| { |
| struct cnic_dev *dev; |
| |
| if (ulp_type >= 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); |
| |
| if (ulp_type == CNIC_ULP_ISCSI) |
| cnic_uio_stop(); |
| |
| 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) { |
| 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; |
| |
| if (cp->cnic_uinfo) |
| cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); |
| |
| 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_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) |
| printk(KERN_ERR PFX "%s: register_cnic failed\n", |
| dev->netdev->name); |
| |
| return err; |
| } |
| |
| static void cnic_unregister_netdev(struct cnic_dev *dev) |
| { |
| struct cnic_local *cp = dev->cnic_priv; |
| struct cnic_eth_dev *ethdev = cp->ethdev; |
| |
| if (!ethdev) |
| return; |
| |
| ethdev->drv_unregister_cnic(dev->netdev); |
| } |
| |
| static int cnic_start_hw(struct cnic_dev *dev) |
| { |
| struct cnic_local *cp = dev->cnic_priv; |
| struct cnic_eth_dev *ethdev = cp->ethdev; |
| int err; |
| |
| if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) |
| return -EALREADY; |
| |
| dev->regview = ethdev->io_base; |
| cp->chip_id = ethdev->chip_id; |
| pci_dev_get(dev->pcidev); |
| cp->func = PCI_FUNC(dev->pcidev->devfn); |
| cp->status_blk = 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: |
| 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_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(bnx2_cnic_probe); |
| } |
| if (!ethdev) |
| return NULL; |
| |
| pdev = ethdev->pdev; |
| if (!pdev) |
| return NULL; |
| |
| dev_hold(dev); |
| pci_dev_get(pdev); |
| if (pdev->device == PCI_DEVICE_ID_NX2_5709 || |
| pdev->device == PCI_DEVICE_ID_NX2_5709S) { |
| u8 rev; |
| |
| pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); |
| if (rev < 0x10) { |
| pci_dev_put(pdev); |
| goto cnic_err; |
| } |
| } |
| pci_dev_put(pdev); |
| |
| cdev = cnic_alloc_dev(dev, pdev); |
| if (cdev == NULL) |
| goto cnic_err; |
| |
| set_bit(CNIC_F_BNX2_CLASS, &cdev->flags); |
| cdev->submit_kwqes = cnic_submit_bnx2_kwqes; |
| |
| cp = cdev->cnic_priv; |
| cp->ethdev = ethdev; |
| cdev->pcidev = pdev; |
| |
| cp->cnic_ops = &cnic_bnx2_ops; |
| cp->start_hw = cnic_start_bnx2_hw; |
| cp->stop_hw = cnic_stop_bnx2_hw; |
| cp->setup_pgtbl = cnic_setup_page_tbl; |
| cp->alloc_resc = cnic_alloc_bnx2_resc; |
| cp->free_resc = cnic_free_resc; |
| cp->start_cm = cnic_cm_init_bnx2_hw; |
| cp->stop_cm = cnic_cm_stop_bnx2_hw; |
| cp->enable_int = cnic_enable_bnx2_int; |
| cp->disable_int_sync = cnic_disable_bnx2_int_sync; |
| cp->close_conn = cnic_close_bnx2_conn; |
| cp->next_idx = cnic_bnx2_next_idx; |
| cp->hw_idx = cnic_bnx2_hw_idx; |
| return cdev; |
| |
| cnic_err: |
| dev_put(dev); |
| return NULL; |
| } |
| |
| static struct cnic_dev *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) { |
| if (cnic_register_netdev(dev) != 0) { |
| cnic_put(dev); |
| goto done; |
| } |
| 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); |
| cnic_unregister_netdev(dev); |
| } else if (event == NETDEV_UNREGISTER) { |
| write_lock(&cnic_dev_lock); |
| list_del_init(&dev->list); |
| write_unlock(&cnic_dev_lock); |
| |
| cnic_put(dev); |
| cnic_free_dev(dev); |
| goto done; |
| } |
| cnic_put(dev); |
| } |
| done: |
| return NOTIFY_DONE; |
| } |
| |
| static struct notifier_block cnic_netdev_notifier = { |
| .notifier_call = cnic_netdev_event |
| }; |
| |
| static void cnic_release(void) |
| { |
| struct cnic_dev *dev; |
| |
| while (!list_empty(&cnic_dev_list)) { |
| dev = list_entry(cnic_dev_list.next, struct cnic_dev, list); |
| if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { |
| cnic_ulp_stop(dev); |
| cnic_stop_hw(dev); |
| } |
| |
| cnic_ulp_exit(dev); |
| cnic_unregister_netdev(dev); |
| list_del_init(&dev->list); |
| cnic_free_dev(dev); |
| } |
| } |
| |
| static int __init cnic_init(void) |
| { |
| int rc = 0; |
| |
| 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); |