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- /* 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 inline void ulp_get(struct cnic_ulp_ops *ulp_ops)
- {
- atomic_inc(&ulp_ops->ref_count);
- }
- static inline void ulp_put(struct cnic_ulp_ops *ulp_ops)
- {
- atomic_dec(&ulp_ops->ref_count);
- }
- static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val)
- {
- struct cnic_local *cp = dev->cnic_priv;
- struct cnic_eth_dev *ethdev = cp->ethdev;
- struct drv_ctl_info info;
- struct drv_ctl_io *io = &info.data.io;
- info.cmd = DRV_CTL_CTX_WR_CMD;
- io->cid_addr = cid_addr;
- io->offset = off;
- io->data = val;
- ethdev->drv_ctl(dev->netdev, &info);
- }
- static void cnic_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);
- atomic_set(&ulp_ops->ref_count, 0);
- rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops);
- mutex_unlock(&cnic_lock);
- /* Prevent race conditions with netdev_event */
- rtnl_lock();
- read_lock(&cnic_dev_lock);
- list_for_each_entry(dev, &cnic_dev_list, list) {
- struct cnic_local *cp = dev->cnic_priv;
- if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]))
- ulp_ops->cnic_init(dev);
- }
- read_unlock(&cnic_dev_lock);
- rtnl_unlock();
- return 0;
- }
- int cnic_unregister_driver(int ulp_type)
- {
- struct cnic_dev *dev;
- struct cnic_ulp_ops *ulp_ops;
- int i = 0;
- if (ulp_type >= MAX_CNIC_ULP_TYPE) {
- printk(KERN_ERR PFX "cnic_unregister_driver: Bad type %d\n",
- ulp_type);
- return -EINVAL;
- }
- mutex_lock(&cnic_lock);
- ulp_ops = cnic_ulp_tbl[ulp_type];
- if (!ulp_ops) {
- 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();
- while ((atomic_read(&ulp_ops->ref_count) != 0) && (i < 20)) {
- msleep(100);
- i++;
- }
- if (atomic_read(&ulp_ops->ref_count) != 0)
- printk(KERN_WARNING PFX "%s: Failed waiting for ref count to go"
- " to zero.\n", dev->netdev->name);
- 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;
- int i = 0;
- 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();
- while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&
- i < 20) {
- msleep(100);
- i++;
- }
- if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]))
- printk(KERN_WARNING PFX "%s: Failed waiting for ULP up call"
- " to complete.\n", dev->netdev->name);
- 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_l2_rings(struct cnic_dev *dev, int pages)
- {
- struct cnic_local *cp = dev->cnic_priv;
- cp->l2_ring_size = pages * BCM_PAGE_SIZE;
- cp->l2_ring = pci_alloc_consistent(dev->pcidev, cp->l2_ring_size,
- &cp->l2_ring_map);
- if (!cp->l2_ring)
- return -ENOMEM;
- cp->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size;
- cp->l2_buf_size = PAGE_ALIGN(cp->l2_buf_size);
- cp->l2_buf = pci_alloc_consistent(dev->pcidev, cp->l2_buf_size,
- &cp->l2_buf_map);
- if (!cp->l2_buf)
- return -ENOMEM;
- return 0;
- }
- static int cnic_alloc_uio(struct cnic_dev *dev) {
- struct cnic_local *cp = dev->cnic_priv;
- struct uio_info *uinfo;
- int ret;
- uinfo = kzalloc(sizeof(*uinfo), GFP_ATOMIC);
- if (!uinfo)
- return -ENOMEM;
- uinfo->mem[0].addr = dev->netdev->base_addr;
- uinfo->mem[0].internal_addr = dev->regview;
- uinfo->mem[0].size = dev->netdev->mem_end - dev->netdev->mem_start;
- uinfo->mem[0].memtype = UIO_MEM_PHYS;
- uinfo->mem[1].addr = (unsigned long) cp->status_blk & PAGE_MASK;
- if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
- if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)
- uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9;
- else
- uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE;
- uinfo->name = "bnx2_cnic";
- }
- uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
- uinfo->mem[2].addr = (unsigned long) cp->l2_ring;
- uinfo->mem[2].size = cp->l2_ring_size;
- uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
- uinfo->mem[3].addr = (unsigned long) cp->l2_buf;
- uinfo->mem[3].size = cp->l2_buf_size;
- uinfo->mem[3].memtype = UIO_MEM_LOGICAL;
- uinfo->version = CNIC_MODULE_VERSION;
- uinfo->irq = UIO_IRQ_CUSTOM;
- uinfo->open = cnic_uio_open;
- uinfo->release = cnic_uio_close;
- uinfo->priv = dev;
- ret = uio_register_device(&dev->pcidev->dev, uinfo);
- if (ret) {
- kfree(uinfo);
- return ret;
- }
- cp->cnic_uinfo = uinfo;
- return 0;
- }
- static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
- {
- struct cnic_local *cp = dev->cnic_priv;
- int ret;
- ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1);
- if (ret)
- goto error;
- cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
- ret = cnic_alloc_dma(dev, &cp->kcq_info, KCQ_PAGE_CNT, 1);
- if (ret)
- goto error;
- cp->kcq = (struct kcqe **) cp->kcq_info.pg_arr;
- ret = cnic_alloc_context(dev);
- if (ret)
- goto error;
- ret = cnic_alloc_l2_rings(dev, 2);
- if (ret)
- goto error;
- ret = cnic_alloc_uio(dev);
- if (ret)
- goto error;
- return 0;
- error:
- cnic_free_resc(dev);
- return ret;
- }
- static 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);
- for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
- struct cnic_ulp_ops *ulp_ops;
- mutex_lock(&cnic_lock);
- ulp_ops = cp->ulp_ops[if_type];
- if (!ulp_ops) {
- mutex_unlock(&cnic_lock);
- continue;
- }
- set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
- mutex_unlock(&cnic_lock);
- if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
- ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
- clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
- }
- }
- static void cnic_ulp_start(struct cnic_dev *dev)
- {
- struct cnic_local *cp = dev->cnic_priv;
- int if_type;
- for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
- struct cnic_ulp_ops *ulp_ops;
- mutex_lock(&cnic_lock);
- ulp_ops = cp->ulp_ops[if_type];
- if (!ulp_ops || !ulp_ops->cnic_start) {
- mutex_unlock(&cnic_lock);
- continue;
- }
- set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
- mutex_unlock(&cnic_lock);
- if (!test_and_set_bit(ULP_F_START, &cp->ulp_flags[if_type]))
- ulp_ops->cnic_start(cp->ulp_handle[if_type]);
- clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
- }
- }
- static int cnic_ctl(void *data, struct cnic_ctl_info *info)
- {
- struct cnic_dev *dev = data;
- switch (info->cmd) {
- case CNIC_CTL_STOP_CMD:
- cnic_hold(dev);
- cnic_ulp_stop(dev);
- cnic_stop_hw(dev);
- cnic_put(dev);
- break;
- case CNIC_CTL_START_CMD:
- cnic_hold(dev);
- if (!cnic_start_hw(dev))
- cnic_ulp_start(dev);
- cnic_put(dev);
- break;
- default:
- return -EINVAL;
- }
- return 0;
- }
- static void cnic_ulp_init(struct cnic_dev *dev)
- {
- int i;
- struct cnic_local *cp = dev->cnic_priv;
- for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
- struct cnic_ulp_ops *ulp_ops;
- mutex_lock(&cnic_lock);
- ulp_ops = cnic_ulp_tbl[i];
- if (!ulp_ops || !ulp_ops->cnic_init) {
- mutex_unlock(&cnic_lock);
- continue;
- }
- ulp_get(ulp_ops);
- mutex_unlock(&cnic_lock);
- if (!test_and_set_bit(ULP_F_INIT, &cp->ulp_flags[i]))
- ulp_ops->cnic_init(dev);
- ulp_put(ulp_ops);
- }
- }
- static void cnic_ulp_exit(struct cnic_dev *dev)
- {
- int i;
- struct cnic_local *cp = dev->cnic_priv;
- for (i = 0; i < MAX_CNIC_ULP_TYPE_EXT; i++) {
- struct cnic_ulp_ops *ulp_ops;
- mutex_lock(&cnic_lock);
- ulp_ops = cnic_ulp_tbl[i];
- if (!ulp_ops || !ulp_ops->cnic_exit) {
- mutex_unlock(&cnic_lock);
- continue;
- }
- ulp_get(ulp_ops);
- mutex_unlock(&cnic_lock);
- if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i]))
- ulp_ops->cnic_exit(dev);
- ulp_put(ulp_ops);
- }
- }
- static int cnic_cm_offload_pg(struct cnic_sock *csk)
- {
- struct cnic_dev *dev = csk->dev;
- struct l4_kwq_offload_pg *l4kwqe;
- struct kwqe *wqes[1];
- l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1;
- memset(l4kwqe, 0, sizeof(*l4kwqe));
- wqes[0] = (struct kwqe *) l4kwqe;
- l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG;
- l4kwqe->flags =
- L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT;
- l4kwqe->l2hdr_nbytes = ETH_HLEN;
- l4kwqe->da0 = csk->ha[0];
- l4kwqe->da1 = csk->ha[1];
- l4kwqe->da2 = csk->ha[2];
- l4kwqe->da3 = csk->ha[3];
- l4kwqe->da4 = csk->ha[4];
- l4kwqe->da5 = csk->ha[5];
- l4kwqe->sa0 = dev->mac_addr[0];
- l4kwqe->sa1 = dev->mac_addr[1];
- l4kwqe->sa2 = dev->mac_addr[2];
- l4kwqe->sa3 = dev->mac_addr[3];
- l4kwqe->sa4 = dev->mac_addr[4];
- l4kwqe->sa5 = dev->mac_addr[5];
- l4kwqe->etype = ETH_P_IP;
- l4kwqe->ipid_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;
- }
- if (!cnic_start_hw(dev))
- cnic_ulp_start(dev);
- }
- rcu_read_lock();
- for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
- struct cnic_ulp_ops *ulp_ops;
- void *ctx;
- ulp_ops = rcu_dereference(cp->ulp_ops[if_type]);
- if (!ulp_ops || !ulp_ops->indicate_netevent)
- continue;
- ctx = cp->ulp_handle[if_type];
- ulp_ops->indicate_netevent(ctx, event);
- }
- rcu_read_unlock();
- if (event == NETDEV_GOING_DOWN) {
- cnic_ulp_stop(dev);
- cnic_stop_hw(dev);
- cnic_unregister_netdev(dev);
- } else if (event == NETDEV_UNREGISTER) {
- write_lock(&cnic_dev_lock);
- list_del_init(&dev->list);
- write_unlock(&cnic_dev_lock);
- cnic_put(dev);
- cnic_free_dev(dev);
- goto done;
- }
- cnic_put(dev);
- }
- done:
- return NOTIFY_DONE;
- }
- static struct notifier_block cnic_netdev_notifier = {
- .notifier_call = cnic_netdev_event
- };
- static void cnic_release(void)
- {
- struct cnic_dev *dev;
- while (!list_empty(&cnic_dev_list)) {
- dev = list_entry(cnic_dev_list.next, struct cnic_dev, list);
- if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) {
- cnic_ulp_stop(dev);
- cnic_stop_hw(dev);
- }
- cnic_ulp_exit(dev);
- cnic_unregister_netdev(dev);
- list_del_init(&dev->list);
- cnic_free_dev(dev);
- }
- }
- static int __init cnic_init(void)
- {
- int rc = 0;
- 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);
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