| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Michael Chan | 29278 | 92.42% | 94 | 61.04% |
| Dmitry Kravkov | 647 | 2.04% | 5 | 3.25% |
| Eddie Wai | 385 | 1.22% | 11 | 7.14% |
| Vladislav Zolotarov | 382 | 1.21% | 2 | 1.30% |
| Barak Witkowsky | 267 | 0.84% | 2 | 1.30% |
| Tej Parkash | 153 | 0.48% | 2 | 1.30% |
| Joe Perches | 136 | 0.43% | 3 | 1.95% |
| Adheer Chandravanshi | 94 | 0.30% | 1 | 0.65% |
| Eric Dumazet | 68 | 0.21% | 2 | 1.30% |
| Yuval Mintz | 62 | 0.20% | 1 | 0.65% |
| David S. Miller | 42 | 0.13% | 5 | 3.25% |
| Li RongQing | 22 | 0.07% | 1 | 0.65% |
| Jeffrey Huang | 18 | 0.06% | 1 | 0.65% |
| Roel Kluin | 16 | 0.05% | 1 | 0.65% |
| Jon Maxwell | 16 | 0.05% | 1 | 0.65% |
| Jesper Juhl | 13 | 0.04% | 1 | 0.65% |
| Kees Cook | 12 | 0.04% | 1 | 0.65% |
| Bhanu Prakash Gollapudi | 10 | 0.03% | 1 | 0.65% |
| Sergei Shtylyov | 7 | 0.02% | 1 | 0.65% |
| Gustavo A. R. Silva | 5 | 0.02% | 1 | 0.65% |
| Dan Carpenter | 5 | 0.02% | 1 | 0.65% |
| Rasesh Mody | 4 | 0.01% | 1 | 0.65% |
| Peter Zijlstra | 4 | 0.01% | 1 | 0.65% |
| Julia Lawall | 3 | 0.01% | 1 | 0.65% |
| Jiri Pirko | 3 | 0.01% | 1 | 0.65% |
| Andreea-Cristina Bernat | 3 | 0.01% | 1 | 0.65% |
| Parav Pandit | 3 | 0.01% | 1 | 0.65% |
| Christophe Jaillet | 3 | 0.01% | 1 | 0.65% |
| Paul Gortmaker | 3 | 0.01% | 1 | 0.65% |
| Randy Dunlap | 3 | 0.01% | 1 | 0.65% |
| Michał Mirosław | 2 | 0.01% | 1 | 0.65% |
| Akinobu Mita | 2 | 0.01% | 1 | 0.65% |
| Jan Dakinevich | 2 | 0.01% | 1 | 0.65% |
| Jeff Kirsher | 2 | 0.01% | 1 | 0.65% |
| Anish Bhatt | 2 | 0.01% | 1 | 0.65% |
| Ben Hutchings | 1 | 0.00% | 1 | 0.65% |
| Alexey Dobriyan | 1 | 0.00% | 1 | 0.65% |
| Total | 31679 | 154 |
/* cnic.c: QLogic CNIC core network driver. * * Copyright (c) 2006-2014 Broadcom Corporation * Copyright (c) 2014-2015 QLogic 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) * Previously modified and maintained by: Michael Chan <mchan@broadcom.com> * Maintained By: Dept-HSGLinuxNICDev@qlogic.com */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/list.h> #include <linux/slab.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/netdevice.h> #include <linux/uio_driver.h> #include <linux/in.h> #include <linux/dma-mapping.h> #include <linux/delay.h> #include <linux/ethtool.h> #include <linux/if_vlan.h> #include <linux/prefetch.h> #include <linux/random.h> #if IS_ENABLED(CONFIG_VLAN_8021Q) #define BCM_VLAN 1 #endif #include <net/ip.h> #include <net/tcp.h> #include <net/route.h> #include <net/ipv6.h> #include <net/ip6_route.h> #include <net/ip6_checksum.h> #include <scsi/iscsi_if.h> #define BCM_CNIC 1 #include "cnic_if.h" #include "bnx2.h" #include "bnx2x/bnx2x.h" #include "bnx2x/bnx2x_reg.h" #include "bnx2x/bnx2x_fw_defs.h" #include "bnx2x/bnx2x_hsi.h" #include "../../../scsi/bnx2i/57xx_iscsi_constants.h" #include "../../../scsi/bnx2i/57xx_iscsi_hsi.h" #include "../../../scsi/bnx2fc/bnx2fc_constants.h" #include "cnic.h" #include "cnic_defs.h" #define CNIC_MODULE_NAME "cnic" static char version[] = "QLogic " CNIC_MODULE_NAME "Driver v" CNIC_MODULE_VERSION " (" CNIC_MODULE_RELDATE ")\n"; MODULE_AUTHOR("Michael Chan <mchan@broadcom.com> and John(Zongxi) " "Chen (zongxi@broadcom.com"); MODULE_DESCRIPTION("QLogic cnic Driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(CNIC_MODULE_VERSION); /* cnic_dev_list modifications are protected by both rtnl and cnic_dev_lock */ static LIST_HEAD(cnic_dev_list); static LIST_HEAD(cnic_udev_list); static DEFINE_RWLOCK(cnic_dev_lock); static DEFINE_MUTEX(cnic_lock); static struct cnic_ulp_ops __rcu *cnic_ulp_tbl[MAX_CNIC_ULP_TYPE]; /* helper function, assuming cnic_lock is held */ static inline struct cnic_ulp_ops *cnic_ulp_tbl_prot(int type) { return rcu_dereference_protected(cnic_ulp_tbl[type], lockdep_is_held(&cnic_lock)); } static int cnic_service_bnx2(void *, void *); static int cnic_service_bnx2x(void *, void *); static int cnic_ctl(void *, struct cnic_ctl_info *); static struct cnic_ops cnic_bnx2_ops = { .cnic_owner = THIS_MODULE, .cnic_handler = cnic_service_bnx2, .cnic_ctl = cnic_ctl, }; static struct cnic_ops cnic_bnx2x_ops = { .cnic_owner = THIS_MODULE, .cnic_handler = cnic_service_bnx2x, .cnic_ctl = cnic_ctl, }; static struct workqueue_struct *cnic_wq; static void cnic_shutdown_rings(struct cnic_dev *); static void cnic_init_rings(struct cnic_dev *); static int cnic_cm_set_pg(struct cnic_sock *); static int cnic_uio_open(struct uio_info *uinfo, struct inode *inode) { struct cnic_uio_dev *udev = uinfo->priv; struct cnic_dev *dev; if (!capable(CAP_NET_ADMIN)) return -EPERM; if (udev->uio_dev != -1) return -EBUSY; rtnl_lock(); dev = udev->dev; if (!dev || !test_bit(CNIC_F_CNIC_UP, &dev->flags)) { rtnl_unlock(); return -ENODEV; } udev->uio_dev = iminor(inode); cnic_shutdown_rings(dev); cnic_init_rings(dev); rtnl_unlock(); return 0; } static int cnic_uio_close(struct uio_info *uinfo, struct inode *inode) { struct cnic_uio_dev *udev = uinfo->priv; udev->uio_dev = -1; return 0; } static inline void cnic_hold(struct cnic_dev *dev) { atomic_inc(&dev->ref_count); } static inline void cnic_put(struct cnic_dev *dev) { atomic_dec(&dev->ref_count); } static inline void csk_hold(struct cnic_sock *csk) { atomic_inc(&csk->ref_count); } static inline void csk_put(struct cnic_sock *csk) { atomic_dec(&csk->ref_count); } static struct cnic_dev *cnic_from_netdev(struct net_device *netdev) { struct cnic_dev *cdev; read_lock(&cnic_dev_lock); list_for_each_entry(cdev, &cnic_dev_list, list) { if (netdev == cdev->netdev) { cnic_hold(cdev); read_unlock(&cnic_dev_lock); return cdev; } } read_unlock(&cnic_dev_lock); return NULL; } static inline void ulp_get(struct cnic_ulp_ops *ulp_ops) { atomic_inc(&ulp_ops->ref_count); } static inline void ulp_put(struct cnic_ulp_ops *ulp_ops) { atomic_dec(&ulp_ops->ref_count); } static void cnic_ctx_wr(struct cnic_dev *dev, u32 cid_addr, u32 off, u32 val) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; struct drv_ctl_info info; struct drv_ctl_io *io = &info.data.io; memset(&info, 0, sizeof(struct drv_ctl_info)); info.cmd = DRV_CTL_CTX_WR_CMD; io->cid_addr = cid_addr; io->offset = off; io->data = val; ethdev->drv_ctl(dev->netdev, &info); } static void cnic_ctx_tbl_wr(struct cnic_dev *dev, u32 off, dma_addr_t addr) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; struct drv_ctl_info info; struct drv_ctl_io *io = &info.data.io; memset(&info, 0, sizeof(struct drv_ctl_info)); info.cmd = DRV_CTL_CTXTBL_WR_CMD; io->offset = off; io->dma_addr = addr; ethdev->drv_ctl(dev->netdev, &info); } static void cnic_ring_ctl(struct cnic_dev *dev, u32 cid, u32 cl_id, int start) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; struct drv_ctl_info info; struct drv_ctl_l2_ring *ring = &info.data.ring; memset(&info, 0, sizeof(struct drv_ctl_info)); if (start) info.cmd = DRV_CTL_START_L2_CMD; else info.cmd = DRV_CTL_STOP_L2_CMD; ring->cid = cid; ring->client_id = cl_id; ethdev->drv_ctl(dev->netdev, &info); } static void cnic_reg_wr_ind(struct cnic_dev *dev, u32 off, u32 val) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; struct drv_ctl_info info; struct drv_ctl_io *io = &info.data.io; memset(&info, 0, sizeof(struct drv_ctl_info)); 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; memset(&info, 0, sizeof(struct drv_ctl_info)); info.cmd = DRV_CTL_IO_RD_CMD; io->offset = off; ethdev->drv_ctl(dev->netdev, &info); return io->data; } static void cnic_ulp_ctl(struct cnic_dev *dev, int ulp_type, bool reg, int state) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; struct drv_ctl_info info; struct fcoe_capabilities *fcoe_cap = &info.data.register_data.fcoe_features; memset(&info, 0, sizeof(struct drv_ctl_info)); if (reg) { info.cmd = DRV_CTL_ULP_REGISTER_CMD; if (ulp_type == CNIC_ULP_FCOE && dev->fcoe_cap) memcpy(fcoe_cap, dev->fcoe_cap, sizeof(*fcoe_cap)); } else { info.cmd = DRV_CTL_ULP_UNREGISTER_CMD; } info.data.ulp_type = ulp_type; info.drv_state = state; ethdev->drv_ctl(dev->netdev, &info); } static int cnic_in_use(struct cnic_sock *csk) { return test_bit(SK_F_INUSE, &csk->flags); } static void cnic_spq_completion(struct cnic_dev *dev, int cmd, u32 count) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; struct drv_ctl_info info; memset(&info, 0, sizeof(struct drv_ctl_info)); info.cmd = cmd; info.data.credit.credit_count = count; ethdev->drv_ctl(dev->netdev, &info); } static int cnic_get_l5_cid(struct cnic_local *cp, u32 cid, u32 *l5_cid) { u32 i; if (!cp->ctx_tbl) return -EINVAL; for (i = 0; i < cp->max_cid_space; i++) { if (cp->ctx_tbl[i].cid == cid) { *l5_cid = i; return 0; } } return -EINVAL; } static int cnic_send_nlmsg(struct cnic_local *cp, u32 type, struct cnic_sock *csk) { struct iscsi_path path_req; char *buf = NULL; u16 len = 0; u32 msg_type = ISCSI_KEVENT_IF_DOWN; struct cnic_ulp_ops *ulp_ops; struct cnic_uio_dev *udev = cp->udev; int rc = 0, retry = 0; if (!udev || udev->uio_dev == -1) return -ENODEV; if (csk) { len = sizeof(path_req); buf = (char *) &path_req; memset(&path_req, 0, len); msg_type = ISCSI_KEVENT_PATH_REQ; path_req.handle = (u64) csk->l5_cid; if (test_bit(SK_F_IPV6, &csk->flags)) { memcpy(&path_req.dst.v6_addr, &csk->dst_ip[0], sizeof(struct in6_addr)); path_req.ip_addr_len = 16; } else { memcpy(&path_req.dst.v4_addr, &csk->dst_ip[0], sizeof(struct in_addr)); path_req.ip_addr_len = 4; } path_req.vlan_id = csk->vlan_id; path_req.pmtu = csk->mtu; } while (retry < 3) { rc = 0; rcu_read_lock(); ulp_ops = rcu_dereference(cp->ulp_ops[CNIC_ULP_ISCSI]); if (ulp_ops) rc = ulp_ops->iscsi_nl_send_msg( cp->ulp_handle[CNIC_ULP_ISCSI], msg_type, buf, len); rcu_read_unlock(); if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ) break; msleep(100); retry++; } return rc; } static void cnic_cm_upcall(struct cnic_local *, struct cnic_sock *, u8); 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; if (!rcu_access_pointer(cp->ulp_ops[CNIC_ULP_L4])) { rc = -ENODEV; break; } csk = &cp->csk_tbl[l5_cid]; csk_hold(csk); if (cnic_in_use(csk) && test_bit(SK_F_CONNECT_START, &csk->flags)) { csk->vlan_id = path_resp->vlan_id; memcpy(csk->ha, path_resp->mac_addr, ETH_ALEN); 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); } else if (!test_bit(SK_F_OFFLD_SCHED, &csk->flags) && !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { cnic_cm_upcall(cp, csk, L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE); clear_bit(SK_F_CONNECT_START, &csk->flags); } } 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_atomic(); 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_atomic(); while (test_and_set_bit(SK_F_OFFLD_SCHED, &csk->flags)) msleep(1); if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { csk->state = L4_KCQE_OPCODE_VALUE_RESET_COMP; return 1; } return 0; } int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops) { struct cnic_dev *dev; if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) { pr_err("%s: Bad type %d\n", __func__, ulp_type); return -EINVAL; } mutex_lock(&cnic_lock); if (cnic_ulp_tbl_prot(ulp_type)) { pr_err("%s: Type %d has already been registered\n", __func__, ulp_type); mutex_unlock(&cnic_lock); return -EBUSY; } read_lock(&cnic_dev_lock); list_for_each_entry(dev, &cnic_dev_list, list) { struct cnic_local *cp = dev->cnic_priv; clear_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type]); } read_unlock(&cnic_dev_lock); atomic_set(&ulp_ops->ref_count, 0); rcu_assign_pointer(cnic_ulp_tbl[ulp_type], ulp_ops); mutex_unlock(&cnic_lock); /* Prevent race conditions with netdev_event */ rtnl_lock(); 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); } rtnl_unlock(); return 0; } int cnic_unregister_driver(int ulp_type) { struct cnic_dev *dev; struct cnic_ulp_ops *ulp_ops; int i = 0; if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) { pr_err("%s: Bad type %d\n", __func__, ulp_type); return -EINVAL; } mutex_lock(&cnic_lock); ulp_ops = cnic_ulp_tbl_prot(ulp_type); if (!ulp_ops) { pr_err("%s: Type %d has not been registered\n", __func__, ulp_type); goto out_unlock; } read_lock(&cnic_dev_lock); list_for_each_entry(dev, &cnic_dev_list, list) { struct cnic_local *cp = dev->cnic_priv; if (rcu_access_pointer(cp->ulp_ops[ulp_type])) { pr_err("%s: Type %d still has devices registered\n", __func__, ulp_type); read_unlock(&cnic_dev_lock); goto out_unlock; } } read_unlock(&cnic_dev_lock); RCU_INIT_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) pr_warn("%s: Failed waiting for ref count to go to zero\n", __func__); return 0; out_unlock: mutex_unlock(&cnic_lock); return -EINVAL; } static int cnic_start_hw(struct cnic_dev *); static void cnic_stop_hw(struct cnic_dev *); static int cnic_register_device(struct cnic_dev *dev, int ulp_type, void *ulp_ctx) { struct cnic_local *cp = dev->cnic_priv; struct cnic_ulp_ops *ulp_ops; if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) { pr_err("%s: Bad type %d\n", __func__, ulp_type); return -EINVAL; } mutex_lock(&cnic_lock); if (cnic_ulp_tbl_prot(ulp_type) == NULL) { pr_err("%s: Driver with type %d has not been registered\n", __func__, ulp_type); mutex_unlock(&cnic_lock); return -EAGAIN; } if (rcu_access_pointer(cp->ulp_ops[ulp_type])) { pr_err("%s: Type %d has already been registered to this device\n", __func__, ulp_type); mutex_unlock(&cnic_lock); return -EBUSY; } clear_bit(ULP_F_START, &cp->ulp_flags[ulp_type]); cp->ulp_handle[ulp_type] = ulp_ctx; ulp_ops = cnic_ulp_tbl_prot(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); cnic_ulp_ctl(dev, ulp_type, true, DRV_ACTIVE); return 0; } EXPORT_SYMBOL(cnic_register_driver); static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type) { struct cnic_local *cp = dev->cnic_priv; int i = 0; if (ulp_type < 0 || ulp_type >= MAX_CNIC_ULP_TYPE) { pr_err("%s: Bad type %d\n", __func__, ulp_type); return -EINVAL; } if (ulp_type == CNIC_ULP_ISCSI) cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); mutex_lock(&cnic_lock); if (rcu_access_pointer(cp->ulp_ops[ulp_type])) { RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL); cnic_put(dev); } else { pr_err("%s: device not registered to this ulp type %d\n", __func__, ulp_type); mutex_unlock(&cnic_lock); return -EINVAL; } mutex_unlock(&cnic_lock); if (ulp_type == CNIC_ULP_FCOE) dev->fcoe_cap = NULL; synchronize_rcu(); while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) && i < 20) { msleep(100); i++; } if (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type])) netdev_warn(dev->netdev, "Failed waiting for ULP up call to complete\n"); if (test_bit(ULP_F_INIT, &cp->ulp_flags[ulp_type])) cnic_ulp_ctl(dev, ulp_type, false, DRV_UNLOADED); else cnic_ulp_ctl(dev, ulp_type, false, DRV_INACTIVE); return 0; } EXPORT_SYMBOL(cnic_unregister_driver); static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id, u32 next) { id_tbl->start = start_id; id_tbl->max = size; id_tbl->next = next; spin_lock_init(&id_tbl->lock); id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL); if (!id_tbl->table) return -ENOMEM; return 0; } static void cnic_free_id_tbl(struct cnic_id_tbl *id_tbl) { kfree(id_tbl->table); id_tbl->table = NULL; } static int cnic_alloc_id(struct cnic_id_tbl *id_tbl, u32 id) { int ret = -1; id -= id_tbl->start; if (id >= id_tbl->max) return ret; spin_lock(&id_tbl->lock); if (!test_bit(id, id_tbl->table)) { set_bit(id, id_tbl->table); ret = 0; } spin_unlock(&id_tbl->lock); return ret; } /* Returns -1 if not successful */ static u32 cnic_alloc_new_id(struct cnic_id_tbl *id_tbl) { u32 id; spin_lock(&id_tbl->lock); id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); if (id >= id_tbl->max) { id = -1; if (id_tbl->next != 0) { id = find_first_zero_bit(id_tbl->table, id_tbl->next); if (id >= id_tbl->next) id = -1; } } if (id < id_tbl->max) { set_bit(id, id_tbl->table); id_tbl->next = (id + 1) & (id_tbl->max - 1); id += id_tbl->start; } spin_unlock(&id_tbl->lock); return id; } static void cnic_free_id(struct cnic_id_tbl *id_tbl, u32 id) { if (id == -1) return; id -= id_tbl->start; if (id >= id_tbl->max) return; clear_bit(id, id_tbl->table); } static void cnic_free_dma(struct cnic_dev *dev, struct cnic_dma *dma) { int i; if (!dma->pg_arr) return; for (i = 0; i < dma->num_pages; i++) { if (dma->pg_arr[i]) { dma_free_coherent(&dev->pcidev->dev, CNIC_PAGE_SIZE, dma->pg_arr[i], dma->pg_map_arr[i]); dma->pg_arr[i] = NULL; } } if (dma->pgtbl) { dma_free_coherent(&dev->pcidev->dev, dma->pgtbl_size, dma->pgtbl, dma->pgtbl_map); dma->pgtbl = NULL; } kfree(dma->pg_arr); dma->pg_arr = NULL; dma->num_pages = 0; } static void cnic_setup_page_tbl(struct cnic_dev *dev, struct cnic_dma *dma) { int i; __le32 *page_table = (__le32 *) dma->pgtbl; for (i = 0; i < dma->num_pages; i++) { /* Each entry needs to be in big endian format. */ *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32); page_table++; *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff); page_table++; } } static void cnic_setup_page_tbl_le(struct cnic_dev *dev, struct cnic_dma *dma) { int i; __le32 *page_table = (__le32 *) dma->pgtbl; for (i = 0; i < dma->num_pages; i++) { /* Each entry needs to be in little endian format. */ *page_table = cpu_to_le32(dma->pg_map_arr[i] & 0xffffffff); page_table++; *page_table = cpu_to_le32((u64) dma->pg_map_arr[i] >> 32); page_table++; } } static int cnic_alloc_dma(struct cnic_dev *dev, struct cnic_dma *dma, int pages, int use_pg_tbl) { int i, size; struct cnic_local *cp = dev->cnic_priv; size = pages * (sizeof(void *) + sizeof(dma_addr_t)); dma->pg_arr = kzalloc(size, GFP_ATOMIC); if (dma->pg_arr == NULL) return -ENOMEM; dma->pg_map_arr = (dma_addr_t *) (dma->pg_arr + pages); dma->num_pages = pages; for (i = 0; i < pages; i++) { dma->pg_arr[i] = dma_alloc_coherent(&dev->pcidev->dev, CNIC_PAGE_SIZE, &dma->pg_map_arr[i], GFP_ATOMIC); if (dma->pg_arr[i] == NULL) goto error; } if (!use_pg_tbl) return 0; dma->pgtbl_size = ((pages * 8) + CNIC_PAGE_SIZE - 1) & ~(CNIC_PAGE_SIZE - 1); dma->pgtbl = dma_alloc_coherent(&dev->pcidev->dev, dma->pgtbl_size, &dma->pgtbl_map, GFP_ATOMIC); if (dma->pgtbl == NULL) goto error; cp->setup_pgtbl(dev, dma); return 0; error: cnic_free_dma(dev, dma); return -ENOMEM; } static void cnic_free_context(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; int i; for (i = 0; i < cp->ctx_blks; i++) { if (cp->ctx_arr[i].ctx) { dma_free_coherent(&dev->pcidev->dev, cp->ctx_blk_size, cp->ctx_arr[i].ctx, cp->ctx_arr[i].mapping); cp->ctx_arr[i].ctx = NULL; } } } static void __cnic_free_uio_rings(struct cnic_uio_dev *udev) { if (udev->l2_buf) { dma_free_coherent(&udev->pdev->dev, udev->l2_buf_size, udev->l2_buf, udev->l2_buf_map); udev->l2_buf = NULL; } if (udev->l2_ring) { dma_free_coherent(&udev->pdev->dev, udev->l2_ring_size, udev->l2_ring, udev->l2_ring_map); udev->l2_ring = NULL; } } static void __cnic_free_uio(struct cnic_uio_dev *udev) { uio_unregister_device(&udev->cnic_uinfo); __cnic_free_uio_rings(udev); pci_dev_put(udev->pdev); kfree(udev); } static void cnic_free_uio(struct cnic_uio_dev *udev) { if (!udev) return; write_lock(&cnic_dev_lock); list_del_init(&udev->list); write_unlock(&cnic_dev_lock); __cnic_free_uio(udev); } static void cnic_free_resc(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_uio_dev *udev = cp->udev; if (udev) { udev->dev = NULL; cp->udev = NULL; if (udev->uio_dev == -1) __cnic_free_uio_rings(udev); } cnic_free_context(dev); kfree(cp->ctx_arr); cp->ctx_arr = NULL; cp->ctx_blks = 0; cnic_free_dma(dev, &cp->gbl_buf_info); cnic_free_dma(dev, &cp->kwq_info); cnic_free_dma(dev, &cp->kwq_16_data_info); cnic_free_dma(dev, &cp->kcq2.dma); cnic_free_dma(dev, &cp->kcq1.dma); kfree(cp->iscsi_tbl); cp->iscsi_tbl = NULL; kfree(cp->ctx_tbl); cp->ctx_tbl = NULL; cnic_free_id_tbl(&cp->fcoe_cid_tbl); cnic_free_id_tbl(&cp->cid_tbl); } static int cnic_alloc_context(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; if (BNX2_CHIP(cp) == BNX2_CHIP_5709) { int i, k, arr_size; cp->ctx_blk_size = CNIC_PAGE_SIZE; cp->cids_per_blk = CNIC_PAGE_SIZE / 128; arr_size = BNX2_MAX_CID / cp->cids_per_blk * sizeof(struct cnic_ctx); cp->ctx_arr = kzalloc(arr_size, GFP_KERNEL); if (cp->ctx_arr == NULL) return -ENOMEM; k = 0; for (i = 0; i < 2; i++) { u32 j, reg, off, lo, hi; if (i == 0) off = BNX2_PG_CTX_MAP; else off = BNX2_ISCSI_CTX_MAP; reg = cnic_reg_rd_ind(dev, off); lo = reg >> 16; hi = reg & 0xffff; for (j = lo; j < hi; j += cp->cids_per_blk, k++) cp->ctx_arr[k].cid = j; } cp->ctx_blks = k; if (cp->ctx_blks >= (BNX2_MAX_CID / cp->cids_per_blk)) { cp->ctx_blks = 0; return -ENOMEM; } for (i = 0; i < cp->ctx_blks; i++) { cp->ctx_arr[i].ctx = dma_alloc_coherent(&dev->pcidev->dev, CNIC_PAGE_SIZE, &cp->ctx_arr[i].mapping, GFP_KERNEL); if (cp->ctx_arr[i].ctx == NULL) return -ENOMEM; } } return 0; } static u16 cnic_bnx2_next_idx(u16 idx) { return idx + 1; } static u16 cnic_bnx2_hw_idx(u16 idx) { return idx; } static u16 cnic_bnx2x_next_idx(u16 idx) { idx++; if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT) idx++; return idx; } static u16 cnic_bnx2x_hw_idx(u16 idx) { if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT) idx++; return idx; } static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info, bool use_pg_tbl) { int err, i, use_page_tbl = 0; struct kcqe **kcq; if (use_pg_tbl) use_page_tbl = 1; err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl); if (err) return err; kcq = (struct kcqe **) info->dma.pg_arr; info->kcq = kcq; info->next_idx = cnic_bnx2_next_idx; info->hw_idx = cnic_bnx2_hw_idx; if (use_pg_tbl) return 0; info->next_idx = cnic_bnx2x_next_idx; info->hw_idx = cnic_bnx2x_hw_idx; for (i = 0; i < KCQ_PAGE_CNT; i++) { struct bnx2x_bd_chain_next *next = (struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT]; int j = i + 1; if (j >= KCQ_PAGE_CNT) j = 0; next->addr_hi = (u64) info->dma.pg_map_arr[j] >> 32; next->addr_lo = info->dma.pg_map_arr[j] & 0xffffffff; } return 0; } static int __cnic_alloc_uio_rings(struct cnic_uio_dev *udev, int pages) { struct cnic_local *cp = udev->dev->cnic_priv; if (udev->l2_ring) return 0; udev->l2_ring_size = pages * CNIC_PAGE_SIZE; udev->l2_ring = dma_alloc_coherent(&udev->pdev->dev, udev->l2_ring_size, &udev->l2_ring_map, GFP_KERNEL | __GFP_COMP); if (!udev->l2_ring) return -ENOMEM; udev->l2_buf_size = (cp->l2_rx_ring_size + 1) * cp->l2_single_buf_size; udev->l2_buf_size = CNIC_PAGE_ALIGN(udev->l2_buf_size); udev->l2_buf = dma_alloc_coherent(&udev->pdev->dev, udev->l2_buf_size, &udev->l2_buf_map, GFP_KERNEL | __GFP_COMP); if (!udev->l2_buf) { __cnic_free_uio_rings(udev); return -ENOMEM; } return 0; } static int cnic_alloc_uio_rings(struct cnic_dev *dev, int pages) { struct cnic_local *cp = dev->cnic_priv; struct cnic_uio_dev *udev; list_for_each_entry(udev, &cnic_udev_list, list) { if (udev->pdev == dev->pcidev) { udev->dev = dev; if (__cnic_alloc_uio_rings(udev, pages)) { udev->dev = NULL; return -ENOMEM; } cp->udev = udev; return 0; } } udev = kzalloc(sizeof(struct cnic_uio_dev), GFP_ATOMIC); if (!udev) return -ENOMEM; udev->uio_dev = -1; udev->dev = dev; udev->pdev = dev->pcidev; if (__cnic_alloc_uio_rings(udev, pages)) goto err_udev; list_add(&udev->list, &cnic_udev_list); pci_dev_get(udev->pdev); cp->udev = udev; return 0; err_udev: kfree(udev); return -ENOMEM; } static int cnic_init_uio(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_uio_dev *udev = cp->udev; struct uio_info *uinfo; int ret = 0; if (!udev) return -ENOMEM; uinfo = &udev->cnic_uinfo; uinfo->mem[0].addr = pci_resource_start(dev->pcidev, 0); uinfo->mem[0].internal_addr = dev->regview; uinfo->mem[0].memtype = UIO_MEM_PHYS; if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { uinfo->mem[0].size = MB_GET_CID_ADDR(TX_TSS_CID + TX_MAX_TSS_RINGS + 1); uinfo->mem[1].addr = (unsigned long) cp->status_blk.gen & CNIC_PAGE_MASK; if (cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE * 9; else uinfo->mem[1].size = BNX2_SBLK_MSIX_ALIGN_SIZE; uinfo->name = "bnx2_cnic"; } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { uinfo->mem[0].size = pci_resource_len(dev->pcidev, 0); uinfo->mem[1].addr = (unsigned long) cp->bnx2x_def_status_blk & CNIC_PAGE_MASK; uinfo->mem[1].size = sizeof(*cp->bnx2x_def_status_blk); uinfo->name = "bnx2x_cnic"; } uinfo->mem[1].memtype = UIO_MEM_LOGICAL; uinfo->mem[2].addr = (unsigned long) udev->l2_ring; uinfo->mem[2].size = udev->l2_ring_size; uinfo->mem[2].memtype = UIO_MEM_LOGICAL; uinfo->mem[3].addr = (unsigned long) udev->l2_buf; uinfo->mem[3].size = udev->l2_buf_size; uinfo->mem[3].memtype = UIO_MEM_LOGICAL; uinfo->version = CNIC_MODULE_VERSION; uinfo->irq = UIO_IRQ_CUSTOM; uinfo->open = cnic_uio_open; uinfo->release = cnic_uio_close; if (udev->uio_dev == -1) { if (!uinfo->priv) { uinfo->priv = udev; ret = uio_register_device(&udev->pdev->dev, uinfo); } } else { cnic_init_rings(dev); } return ret; } static int cnic_alloc_bnx2_resc(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; int ret; ret = cnic_alloc_dma(dev, &cp->kwq_info, KWQ_PAGE_CNT, 1); if (ret) goto error; cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr; ret = cnic_alloc_kcq(dev, &cp->kcq1, true); if (ret) goto error; ret = cnic_alloc_context(dev); if (ret) goto error; ret = cnic_alloc_uio_rings(dev, 2); if (ret) goto error; ret = cnic_init_uio(dev); if (ret) goto error; return 0; error: cnic_free_resc(dev); return ret; } static int cnic_alloc_bnx2x_context(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); int ctx_blk_size = cp->ethdev->ctx_blk_size; int total_mem, blks, i; total_mem = BNX2X_CONTEXT_MEM_SIZE * cp->max_cid_space; blks = total_mem / ctx_blk_size; if (total_mem % ctx_blk_size) blks++; if (blks > cp->ethdev->ctx_tbl_len) return -ENOMEM; cp->ctx_arr = kcalloc(blks, sizeof(struct cnic_ctx), GFP_KERNEL); if (cp->ctx_arr == NULL) return -ENOMEM; cp->ctx_blks = blks; cp->ctx_blk_size = ctx_blk_size; if (!CHIP_IS_E1(bp)) cp->ctx_align = 0; else cp->ctx_align = ctx_blk_size; cp->cids_per_blk = ctx_blk_size / BNX2X_CONTEXT_MEM_SIZE; for (i = 0; i < blks; i++) { cp->ctx_arr[i].ctx = dma_alloc_coherent(&dev->pcidev->dev, cp->ctx_blk_size, &cp->ctx_arr[i].mapping, GFP_KERNEL); if (cp->ctx_arr[i].ctx == NULL) return -ENOMEM; if (cp->ctx_align && cp->ctx_blk_size == ctx_blk_size) { if (cp->ctx_arr[i].mapping & (cp->ctx_align - 1)) { cnic_free_context(dev); cp->ctx_blk_size += cp->ctx_align; i = -1; continue; } } } return 0; } static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct cnic_eth_dev *ethdev = cp->ethdev; u32 start_cid = ethdev->starting_cid; int i, j, n, ret, pages; struct cnic_dma *kwq_16_dma = &cp->kwq_16_data_info; cp->max_cid_space = MAX_ISCSI_TBL_SZ; cp->iscsi_start_cid = start_cid; cp->fcoe_start_cid = start_cid + MAX_ISCSI_TBL_SZ; if (BNX2X_CHIP_IS_E2_PLUS(bp)) { cp->max_cid_space += dev->max_fcoe_conn; cp->fcoe_init_cid = ethdev->fcoe_init_cid; if (!cp->fcoe_init_cid) cp->fcoe_init_cid = 0x10; } cp->iscsi_tbl = kcalloc(MAX_ISCSI_TBL_SZ, sizeof(struct cnic_iscsi), GFP_KERNEL); if (!cp->iscsi_tbl) goto error; cp->ctx_tbl = kcalloc(cp->max_cid_space, sizeof(struct cnic_context), GFP_KERNEL); if (!cp->ctx_tbl) goto error; for (i = 0; i < MAX_ISCSI_TBL_SZ; i++) { cp->ctx_tbl[i].proto.iscsi = &cp->iscsi_tbl[i]; cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_ISCSI; } for (i = MAX_ISCSI_TBL_SZ; i < cp->max_cid_space; i++) cp->ctx_tbl[i].ulp_proto_id = CNIC_ULP_FCOE; pages = CNIC_PAGE_ALIGN(cp->max_cid_space * CNIC_KWQ16_DATA_SIZE) / CNIC_PAGE_SIZE; ret = cnic_alloc_dma(dev, kwq_16_dma, pages, 0); if (ret) goto error; n = CNIC_PAGE_SIZE / CNIC_KWQ16_DATA_SIZE; for (i = 0, j = 0; i < cp->max_cid_space; i++) { long off = CNIC_KWQ16_DATA_SIZE * (i % n); cp->ctx_tbl[i].kwqe_data = kwq_16_dma->pg_arr[j] + off; cp->ctx_tbl[i].kwqe_data_mapping = kwq_16_dma->pg_map_arr[j] + off; if ((i % n) == (n - 1)) j++; } ret = cnic_alloc_kcq(dev, &cp->kcq1, false); if (ret) goto error; if (CNIC_SUPPORTS_FCOE(bp)) { ret = cnic_alloc_kcq(dev, &cp->kcq2, true); if (ret) goto error; } pages = CNIC_PAGE_ALIGN(BNX2X_ISCSI_GLB_BUF_SIZE) / CNIC_PAGE_SIZE; ret = cnic_alloc_dma(dev, &cp->gbl_buf_info, pages, 0); if (ret) goto error; ret = cnic_alloc_bnx2x_context(dev); if (ret) goto error; if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI) return 0; cp->bnx2x_def_status_blk = cp->ethdev->irq_arr[1].status_blk; cp->l2_rx_ring_size = 15; ret = cnic_alloc_uio_rings(dev, 4); if (ret) goto error; ret = cnic_init_uio(dev); if (ret) goto error; return 0; error: cnic_free_resc(dev); return -ENOMEM; } static inline u32 cnic_kwq_avail(struct cnic_local *cp) { return cp->max_kwq_idx - ((cp->kwq_prod_idx - cp->kwq_con_idx) & cp->max_kwq_idx); } static int cnic_submit_bnx2_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], u32 num_wqes) { struct cnic_local *cp = dev->cnic_priv; struct kwqe *prod_qe; u16 prod, sw_prod, i; if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) return -EAGAIN; /* bnx2 is down */ spin_lock_bh(&cp->cnic_ulp_lock); if (num_wqes > cnic_kwq_avail(cp) && !test_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags)) { spin_unlock_bh(&cp->cnic_ulp_lock); return -EAGAIN; } clear_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags); prod = cp->kwq_prod_idx; sw_prod = prod & MAX_KWQ_IDX; for (i = 0; i < num_wqes; i++) { prod_qe = &cp->kwq[KWQ_PG(sw_prod)][KWQ_IDX(sw_prod)]; memcpy(prod_qe, wqes[i], sizeof(struct kwqe)); prod++; sw_prod = prod & MAX_KWQ_IDX; } cp->kwq_prod_idx = prod; CNIC_WR16(dev, cp->kwq_io_addr, cp->kwq_prod_idx); spin_unlock_bh(&cp->cnic_ulp_lock); return 0; } static void *cnic_get_kwqe_16_data(struct cnic_local *cp, u32 l5_cid, union l5cm_specific_data *l5_data) { struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; dma_addr_t map; map = ctx->kwqe_data_mapping; l5_data->phy_address.lo = (u64) map & 0xffffffff; l5_data->phy_address.hi = (u64) map >> 32; return ctx->kwqe_data; } static int cnic_submit_kwqe_16(struct cnic_dev *dev, u32 cmd, u32 cid, u32 type, union l5cm_specific_data *l5_data) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct l5cm_spe kwqe; struct kwqe_16 *kwq[1]; u16 type_16; int ret; kwqe.hdr.conn_and_cmd_data = cpu_to_le32(((cmd << SPE_HDR_CMD_ID_SHIFT) | BNX2X_HW_CID(bp, cid))); type_16 = (type << SPE_HDR_CONN_TYPE_SHIFT) & SPE_HDR_CONN_TYPE; type_16 |= (bp->pfid << SPE_HDR_FUNCTION_ID_SHIFT) & SPE_HDR_FUNCTION_ID; kwqe.hdr.type = cpu_to_le16(type_16); kwqe.hdr.reserved1 = 0; kwqe.data.phy_address.lo = cpu_to_le32(l5_data->phy_address.lo); kwqe.data.phy_address.hi = cpu_to_le32(l5_data->phy_address.hi); kwq[0] = (struct kwqe_16 *) &kwqe; spin_lock_bh(&cp->cnic_ulp_lock); ret = cp->ethdev->drv_submit_kwqes_16(dev->netdev, kwq, 1); spin_unlock_bh(&cp->cnic_ulp_lock); if (ret == 1) return 0; return ret; } static void cnic_reply_bnx2x_kcqes(struct cnic_dev *dev, int ulp_type, struct kcqe *cqes[], u32 num_cqes) { struct cnic_local *cp = dev->cnic_priv; struct cnic_ulp_ops *ulp_ops; rcu_read_lock(); ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); if (likely(ulp_ops)) { ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type], cqes, num_cqes); } rcu_read_unlock(); } static void cnic_bnx2x_set_tcp_options(struct cnic_dev *dev, int time_stamps, int en_tcp_dack) { struct bnx2x *bp = netdev_priv(dev->netdev); u8 xstorm_flags = XSTORM_L5CM_TCP_FLAGS_WND_SCL_EN; u16 tstorm_flags = 0; if (time_stamps) { xstorm_flags |= XSTORM_L5CM_TCP_FLAGS_TS_ENABLED; tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_TS_ENABLED; } if (en_tcp_dack) tstorm_flags |= TSTORM_L5CM_TCP_FLAGS_DELAYED_ACK_EN; CNIC_WR8(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), xstorm_flags); CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_TCP_VARS_FLAGS_OFFSET(bp->pfid), tstorm_flags); } static int cnic_bnx2x_iscsi_init1(struct cnic_dev *dev, struct kwqe *kwqe) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct iscsi_kwqe_init1 *req1 = (struct iscsi_kwqe_init1 *) kwqe; int hq_bds, pages; u32 pfid = bp->pfid; cp->num_iscsi_tasks = req1->num_tasks_per_conn; cp->num_ccells = req1->num_ccells_per_conn; cp->task_array_size = BNX2X_ISCSI_TASK_CONTEXT_SIZE * cp->num_iscsi_tasks; cp->r2tq_size = cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS * BNX2X_ISCSI_R2TQE_SIZE; cp->hq_size = cp->num_ccells * BNX2X_ISCSI_HQ_BD_SIZE; pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE; hq_bds = pages * (CNIC_PAGE_SIZE / BNX2X_ISCSI_HQ_BD_SIZE); cp->num_cqs = req1->num_cqs; if (!dev->max_iscsi_conn) return 0; /* init Tstorm RAM */ CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_RQ_SIZE_OFFSET(pfid), req1->rq_num_wqes); CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid), CNIC_PAGE_SIZE); CNIC_WR8(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS); CNIC_WR16(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid), req1->num_tasks_per_conn); /* init Ustorm RAM */ CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_BUFFER_SIZE_OFFSET(pfid), req1->rq_buffer_size); CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_OFFSET(pfid), CNIC_PAGE_SIZE); CNIC_WR8(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS); CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid), req1->num_tasks_per_conn); CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_RQ_SIZE_OFFSET(pfid), req1->rq_num_wqes); CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SIZE_OFFSET(pfid), req1->cq_num_wqes); CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid), cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS); /* init Xstorm RAM */ CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid), CNIC_PAGE_SIZE); CNIC_WR8(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS); CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid), req1->num_tasks_per_conn); CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_HQ_SIZE_OFFSET(pfid), hq_bds); CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_SQ_SIZE_OFFSET(pfid), req1->num_tasks_per_conn); CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_R2TQ_SIZE_OFFSET(pfid), cp->num_iscsi_tasks * BNX2X_ISCSI_MAX_PENDING_R2TS); /* init Cstorm RAM */ CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_OFFSET(pfid), CNIC_PAGE_SIZE); CNIC_WR8(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_PAGE_SIZE_LOG_OFFSET(pfid), CNIC_PAGE_BITS); CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_NUM_OF_TASKS_OFFSET(pfid), req1->num_tasks_per_conn); CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SIZE_OFFSET(pfid), req1->cq_num_wqes); CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_HQ_SIZE_OFFSET(pfid), hq_bds); cnic_bnx2x_set_tcp_options(dev, req1->flags & ISCSI_KWQE_INIT1_TIME_STAMPS_ENABLE, req1->flags & ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE); return 0; } static int cnic_bnx2x_iscsi_init2(struct cnic_dev *dev, struct kwqe *kwqe) { struct iscsi_kwqe_init2 *req2 = (struct iscsi_kwqe_init2 *) kwqe; struct bnx2x *bp = netdev_priv(dev->netdev); u32 pfid = bp->pfid; struct iscsi_kcqe kcqe; struct kcqe *cqes[1]; memset(&kcqe, 0, sizeof(kcqe)); if (!dev->max_iscsi_conn) { kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED; goto done; } CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]); CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4, req2->error_bit_map[1]); CNIC_WR16(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn); CNIC_WR(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid), req2->error_bit_map[0]); CNIC_WR(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_ERROR_BITMAP_OFFSET(pfid) + 4, req2->error_bit_map[1]); CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_CQ_SQN_SIZE_OFFSET(pfid), req2->max_cq_sqn); kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; done: kcqe.op_code = ISCSI_KCQE_OPCODE_INIT; cqes[0] = (struct kcqe *) &kcqe; cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); return 0; } static void cnic_free_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid) { struct cnic_local *cp = dev->cnic_priv; struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) { struct cnic_iscsi *iscsi = ctx->proto.iscsi; cnic_free_dma(dev, &iscsi->hq_info); cnic_free_dma(dev, &iscsi->r2tq_info); cnic_free_dma(dev, &iscsi->task_array_info); cnic_free_id(&cp->cid_tbl, ctx->cid); } else { cnic_free_id(&cp->fcoe_cid_tbl, ctx->cid); } ctx->cid = 0; } static int cnic_alloc_bnx2x_conn_resc(struct cnic_dev *dev, u32 l5_cid) { u32 cid; int ret, pages; struct cnic_local *cp = dev->cnic_priv; struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; struct cnic_iscsi *iscsi = ctx->proto.iscsi; if (ctx->ulp_proto_id == CNIC_ULP_FCOE) { cid = cnic_alloc_new_id(&cp->fcoe_cid_tbl); if (cid == -1) { ret = -ENOMEM; goto error; } ctx->cid = cid; return 0; } cid = cnic_alloc_new_id(&cp->cid_tbl); if (cid == -1) { ret = -ENOMEM; goto error; } ctx->cid = cid; pages = CNIC_PAGE_ALIGN(cp->task_array_size) / CNIC_PAGE_SIZE; ret = cnic_alloc_dma(dev, &iscsi->task_array_info, pages, 1); if (ret) goto error; pages = CNIC_PAGE_ALIGN(cp->r2tq_size) / CNIC_PAGE_SIZE; ret = cnic_alloc_dma(dev, &iscsi->r2tq_info, pages, 1); if (ret) goto error; pages = CNIC_PAGE_ALIGN(cp->hq_size) / CNIC_PAGE_SIZE; ret = cnic_alloc_dma(dev, &iscsi->hq_info, pages, 1); if (ret) goto error; return 0; error: cnic_free_bnx2x_conn_resc(dev, l5_cid); return ret; } static void *cnic_get_bnx2x_ctx(struct cnic_dev *dev, u32 cid, int init, struct regpair *ctx_addr) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; int blk = (cid - ethdev->starting_cid) / cp->cids_per_blk; int off = (cid - ethdev->starting_cid) % cp->cids_per_blk; unsigned long align_off = 0; dma_addr_t ctx_map; void *ctx; if (cp->ctx_align) { unsigned long mask = cp->ctx_align - 1; if (cp->ctx_arr[blk].mapping & mask) align_off = cp->ctx_align - (cp->ctx_arr[blk].mapping & mask); } ctx_map = cp->ctx_arr[blk].mapping + align_off + (off * BNX2X_CONTEXT_MEM_SIZE); ctx = cp->ctx_arr[blk].ctx + align_off + (off * BNX2X_CONTEXT_MEM_SIZE); if (init) memset(ctx, 0, BNX2X_CONTEXT_MEM_SIZE); ctx_addr->lo = ctx_map & 0xffffffff; ctx_addr->hi = (u64) ctx_map >> 32; return ctx; } static int cnic_setup_bnx2x_ctx(struct cnic_dev *dev, struct kwqe *wqes[], u32 num) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct iscsi_kwqe_conn_offload1 *req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0]; struct iscsi_kwqe_conn_offload2 *req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1]; struct iscsi_kwqe_conn_offload3 *req3; struct cnic_context *ctx = &cp->ctx_tbl[req1->iscsi_conn_id]; struct cnic_iscsi *iscsi = ctx->proto.iscsi; u32 cid = ctx->cid; u32 hw_cid = BNX2X_HW_CID(bp, cid); struct iscsi_context *ictx; struct regpair context_addr; int i, j, n = 2, n_max; u8 port = BP_PORT(bp); ctx->ctx_flags = 0; if (!req2->num_additional_wqes) return -EINVAL; n_max = req2->num_additional_wqes + 2; ictx = cnic_get_bnx2x_ctx(dev, cid, 1, &context_addr); if (ictx == NULL) return -ENOMEM; req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++]; ictx->xstorm_ag_context.hq_prod = 1; ictx->xstorm_st_context.iscsi.first_burst_length = ISCSI_DEF_FIRST_BURST_LEN; ictx->xstorm_st_context.iscsi.max_send_pdu_length = ISCSI_DEF_MAX_RECV_SEG_LEN; ictx->xstorm_st_context.iscsi.sq_pbl_base.lo = req1->sq_page_table_addr_lo; ictx->xstorm_st_context.iscsi.sq_pbl_base.hi = req1->sq_page_table_addr_hi; ictx->xstorm_st_context.iscsi.sq_curr_pbe.lo = req2->sq_first_pte.hi; ictx->xstorm_st_context.iscsi.sq_curr_pbe.hi = req2->sq_first_pte.lo; ictx->xstorm_st_context.iscsi.hq_pbl_base.lo = iscsi->hq_info.pgtbl_map & 0xffffffff; ictx->xstorm_st_context.iscsi.hq_pbl_base.hi = (u64) iscsi->hq_info.pgtbl_map >> 32; ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.lo = iscsi->hq_info.pgtbl[0]; ictx->xstorm_st_context.iscsi.hq_curr_pbe_base.hi = iscsi->hq_info.pgtbl[1]; ictx->xstorm_st_context.iscsi.r2tq_pbl_base.lo = iscsi->r2tq_info.pgtbl_map & 0xffffffff; ictx->xstorm_st_context.iscsi.r2tq_pbl_base.hi = (u64) iscsi->r2tq_info.pgtbl_map >> 32; ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.lo = iscsi->r2tq_info.pgtbl[0]; ictx->xstorm_st_context.iscsi.r2tq_curr_pbe_base.hi = iscsi->r2tq_info.pgtbl[1]; ictx->xstorm_st_context.iscsi.task_pbl_base.lo = iscsi->task_array_info.pgtbl_map & 0xffffffff; ictx->xstorm_st_context.iscsi.task_pbl_base.hi = (u64) iscsi->task_array_info.pgtbl_map >> 32; ictx->xstorm_st_context.iscsi.task_pbl_cache_idx = BNX2X_ISCSI_PBL_NOT_CACHED; ictx->xstorm_st_context.iscsi.flags.flags |= XSTORM_ISCSI_CONTEXT_FLAGS_B_IMMEDIATE_DATA; ictx->xstorm_st_context.iscsi.flags.flags |= XSTORM_ISCSI_CONTEXT_FLAGS_B_INITIAL_R2T; ictx->xstorm_st_context.common.ethernet.reserved_vlan_type = ETH_P_8021Q; if (BNX2X_CHIP_IS_E2_PLUS(bp) && bp->common.chip_port_mode == CHIP_2_PORT_MODE) { port = 0; } ictx->xstorm_st_context.common.flags = 1 << XSTORM_COMMON_CONTEXT_SECTION_PHYSQ_INITIALIZED_SHIFT; ictx->xstorm_st_context.common.flags = port << XSTORM_COMMON_CONTEXT_SECTION_PBF_PORT_SHIFT; ictx->tstorm_st_context.iscsi.hdr_bytes_2_fetch = ISCSI_HEADER_SIZE; /* TSTORM requires the base address of RQ DB & not PTE */ ictx->tstorm_st_context.iscsi.rq_db_phy_addr.lo = req2->rq_page_table_addr_lo & CNIC_PAGE_MASK; ictx->tstorm_st_context.iscsi.rq_db_phy_addr.hi = req2->rq_page_table_addr_hi; ictx->tstorm_st_context.iscsi.iscsi_conn_id = req1->iscsi_conn_id; ictx->tstorm_st_context.tcp.cwnd = 0x5A8; ictx->tstorm_st_context.tcp.flags2 |= TSTORM_TCP_ST_CONTEXT_SECTION_DA_EN; ictx->tstorm_st_context.tcp.ooo_support_mode = TCP_TSTORM_OOO_DROP_AND_PROC_ACK; ictx->timers_context.flags |= TIMERS_BLOCK_CONTEXT_CONN_VALID_FLG; ictx->ustorm_st_context.ring.rq.pbl_base.lo = req2->rq_page_table_addr_lo; ictx->ustorm_st_context.ring.rq.pbl_base.hi = req2->rq_page_table_addr_hi; ictx->ustorm_st_context.ring.rq.curr_pbe.lo = req3->qp_first_pte[0].hi; ictx->ustorm_st_context.ring.rq.curr_pbe.hi = req3->qp_first_pte[0].lo; ictx->ustorm_st_context.ring.r2tq.pbl_base.lo = iscsi->r2tq_info.pgtbl_map & 0xffffffff; ictx->ustorm_st_context.ring.r2tq.pbl_base.hi = (u64) iscsi->r2tq_info.pgtbl_map >> 32; ictx->ustorm_st_context.ring.r2tq.curr_pbe.lo = iscsi->r2tq_info.pgtbl[0]; ictx->ustorm_st_context.ring.r2tq.curr_pbe.hi = iscsi->r2tq_info.pgtbl[1]; ictx->ustorm_st_context.ring.cq_pbl_base.lo = req1->cq_page_table_addr_lo; ictx->ustorm_st_context.ring.cq_pbl_base.hi = req1->cq_page_table_addr_hi; ictx->ustorm_st_context.ring.cq[0].cq_sn = ISCSI_INITIAL_SN; ictx->ustorm_st_context.ring.cq[0].curr_pbe.lo = req2->cq_first_pte.hi; ictx->ustorm_st_context.ring.cq[0].curr_pbe.hi = req2->cq_first_pte.lo; ictx->ustorm_st_context.task_pbe_cache_index = BNX2X_ISCSI_PBL_NOT_CACHED; ictx->ustorm_st_context.task_pdu_cache_index = BNX2X_ISCSI_PDU_HEADER_NOT_CACHED; for (i = 1, j = 1; i < cp->num_cqs; i++, j++) { if (j == 3) { if (n >= n_max) break; req3 = (struct iscsi_kwqe_conn_offload3 *) wqes[n++]; j = 0; } ictx->ustorm_st_context.ring.cq[i].cq_sn = ISCSI_INITIAL_SN; ictx->ustorm_st_context.ring.cq[i].curr_pbe.lo = req3->qp_first_pte[j].hi; ictx->ustorm_st_context.ring.cq[i].curr_pbe.hi = req3->qp_first_pte[j].lo; } ictx->ustorm_st_context.task_pbl_base.lo = iscsi->task_array_info.pgtbl_map & 0xffffffff; ictx->ustorm_st_context.task_pbl_base.hi = (u64) iscsi->task_array_info.pgtbl_map >> 32; ictx->ustorm_st_context.tce_phy_addr.lo = iscsi->task_array_info.pgtbl[0]; ictx->ustorm_st_context.tce_phy_addr.hi = iscsi->task_array_info.pgtbl[1]; ictx->ustorm_st_context.iscsi_conn_id = req1->iscsi_conn_id; ictx->ustorm_st_context.num_cqs = cp->num_cqs; ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEF_MAX_RECV_SEG_LEN; ictx->ustorm_st_context.negotiated_rx_and_flags |= ISCSI_DEF_MAX_BURST_LEN; ictx->ustorm_st_context.negotiated_rx |= ISCSI_DEFAULT_MAX_OUTSTANDING_R2T << USTORM_ISCSI_ST_CONTEXT_MAX_OUTSTANDING_R2TS_SHIFT; ictx->cstorm_st_context.hq_pbl_base.lo = iscsi->hq_info.pgtbl_map & 0xffffffff; ictx->cstorm_st_context.hq_pbl_base.hi = (u64) iscsi->hq_info.pgtbl_map >> 32; ictx->cstorm_st_context.hq_curr_pbe.lo = iscsi->hq_info.pgtbl[0]; ictx->cstorm_st_context.hq_curr_pbe.hi = iscsi->hq_info.pgtbl[1]; ictx->cstorm_st_context.task_pbl_base.lo = iscsi->task_array_info.pgtbl_map & 0xffffffff; ictx->cstorm_st_context.task_pbl_base.hi = (u64) iscsi->task_array_info.pgtbl_map >> 32; /* CSTORM and USTORM initialization is different, CSTORM requires * CQ DB base & not PTE addr */ ictx->cstorm_st_context.cq_db_base.lo = req1->cq_page_table_addr_lo & CNIC_PAGE_MASK; ictx->cstorm_st_context.cq_db_base.hi = req1->cq_page_table_addr_hi; ictx->cstorm_st_context.iscsi_conn_id = req1->iscsi_conn_id; ictx->cstorm_st_context.cq_proc_en_bit_map = (1 << cp->num_cqs) - 1; for (i = 0; i < cp->num_cqs; i++) { ictx->cstorm_st_context.cq_c_prod_sqn_arr.sqn[i] = ISCSI_INITIAL_SN; ictx->cstorm_st_context.cq_c_sqn_2_notify_arr.sqn[i] = ISCSI_INITIAL_SN; } ictx->xstorm_ag_context.cdu_reserved = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG, ISCSI_CONNECTION_TYPE); ictx->ustorm_ag_context.cdu_usage = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG, ISCSI_CONNECTION_TYPE); return 0; } static int cnic_bnx2x_iscsi_ofld1(struct cnic_dev *dev, struct kwqe *wqes[], u32 num, int *work) { struct iscsi_kwqe_conn_offload1 *req1; struct iscsi_kwqe_conn_offload2 *req2; struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct cnic_context *ctx; struct iscsi_kcqe kcqe; struct kcqe *cqes[1]; u32 l5_cid; int ret = 0; if (num < 2) { *work = num; return -EINVAL; } req1 = (struct iscsi_kwqe_conn_offload1 *) wqes[0]; req2 = (struct iscsi_kwqe_conn_offload2 *) wqes[1]; if ((num - 2) < req2->num_additional_wqes) { *work = num; return -EINVAL; } *work = 2 + req2->num_additional_wqes; l5_cid = req1->iscsi_conn_id; if (l5_cid >= MAX_ISCSI_TBL_SZ) return -EINVAL; memset(&kcqe, 0, sizeof(kcqe)); kcqe.op_code = ISCSI_KCQE_OPCODE_OFFLOAD_CONN; kcqe.iscsi_conn_id = l5_cid; kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE; ctx = &cp->ctx_tbl[l5_cid]; if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) { kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY; goto done; } if (atomic_inc_return(&cp->iscsi_conn) > dev->max_iscsi_conn) { atomic_dec(&cp->iscsi_conn); goto done; } ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid); if (ret) { atomic_dec(&cp->iscsi_conn); ret = 0; goto done; } ret = cnic_setup_bnx2x_ctx(dev, wqes, num); if (ret < 0) { cnic_free_bnx2x_conn_resc(dev, l5_cid); atomic_dec(&cp->iscsi_conn); goto done; } kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; kcqe.iscsi_conn_context_id = BNX2X_HW_CID(bp, cp->ctx_tbl[l5_cid].cid); done: cqes[0] = (struct kcqe *) &kcqe; cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); return 0; } static int cnic_bnx2x_iscsi_update(struct cnic_dev *dev, struct kwqe *kwqe) { struct cnic_local *cp = dev->cnic_priv; struct iscsi_kwqe_conn_update *req = (struct iscsi_kwqe_conn_update *) kwqe; void *data; union l5cm_specific_data l5_data; u32 l5_cid, cid = BNX2X_SW_CID(req->context_id); int ret; if (cnic_get_l5_cid(cp, cid, &l5_cid) != 0) return -EINVAL; data = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data); if (!data) return -ENOMEM; memcpy(data, kwqe, sizeof(struct kwqe)); ret = cnic_submit_kwqe_16(dev, ISCSI_RAMROD_CMD_ID_UPDATE_CONN, req->context_id, ISCSI_CONNECTION_TYPE, &l5_data); return ret; } static int cnic_bnx2x_destroy_ramrod(struct cnic_dev *dev, u32 l5_cid) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; union l5cm_specific_data l5_data; int ret; u32 hw_cid; init_waitqueue_head(&ctx->waitq); ctx->wait_cond = 0; memset(&l5_data, 0, sizeof(l5_data)); hw_cid = BNX2X_HW_CID(bp, ctx->cid); ret = cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL, hw_cid, NONE_CONNECTION_TYPE, &l5_data); if (ret == 0) { wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO); if (unlikely(test_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags))) return -EBUSY; } return 0; } static int cnic_bnx2x_iscsi_destroy(struct cnic_dev *dev, struct kwqe *kwqe) { struct cnic_local *cp = dev->cnic_priv; struct iscsi_kwqe_conn_destroy *req = (struct iscsi_kwqe_conn_destroy *) kwqe; u32 l5_cid = req->reserved0; struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; int ret = 0; struct iscsi_kcqe kcqe; struct kcqe *cqes[1]; if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) goto skip_cfc_delete; if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) { unsigned long delta = ctx->timestamp + (2 * HZ) - jiffies; if (delta > (2 * HZ)) delta = 0; set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags); queue_delayed_work(cnic_wq, &cp->delete_task, delta); goto destroy_reply; } ret = cnic_bnx2x_destroy_ramrod(dev, l5_cid); skip_cfc_delete: cnic_free_bnx2x_conn_resc(dev, l5_cid); if (!ret) { atomic_dec(&cp->iscsi_conn); clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags); } destroy_reply: memset(&kcqe, 0, sizeof(kcqe)); kcqe.op_code = ISCSI_KCQE_OPCODE_DESTROY_CONN; kcqe.iscsi_conn_id = l5_cid; kcqe.completion_status = ISCSI_KCQE_COMPLETION_STATUS_SUCCESS; kcqe.iscsi_conn_context_id = req->context_id; cqes[0] = (struct kcqe *) &kcqe; cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_ISCSI, cqes, 1); return 0; } static void cnic_init_storm_conn_bufs(struct cnic_dev *dev, struct l4_kwq_connect_req1 *kwqe1, struct l4_kwq_connect_req3 *kwqe3, struct l5cm_active_conn_buffer *conn_buf) { struct l5cm_conn_addr_params *conn_addr = &conn_buf->conn_addr_buf; struct l5cm_xstorm_conn_buffer *xstorm_buf = &conn_buf->xstorm_conn_buffer; struct l5cm_tstorm_conn_buffer *tstorm_buf = &conn_buf->tstorm_conn_buffer; struct regpair context_addr; u32 cid = BNX2X_SW_CID(kwqe1->cid); struct in6_addr src_ip, dst_ip; int i; u32 *addrp; addrp = (u32 *) &conn_addr->local_ip_addr; for (i = 0; i < 4; i++, addrp++) src_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp); addrp = (u32 *) &conn_addr->remote_ip_addr; for (i = 0; i < 4; i++, addrp++) dst_ip.in6_u.u6_addr32[i] = cpu_to_be32(*addrp); cnic_get_bnx2x_ctx(dev, cid, 0, &context_addr); xstorm_buf->context_addr.hi = context_addr.hi; xstorm_buf->context_addr.lo = context_addr.lo; xstorm_buf->mss = 0xffff; xstorm_buf->rcv_buf = kwqe3->rcv_buf; if (kwqe1->tcp_flags & L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE) xstorm_buf->params |= L5CM_XSTORM_CONN_BUFFER_NAGLE_ENABLE; xstorm_buf->pseudo_header_checksum = swab16(~csum_ipv6_magic(&src_ip, &dst_ip, 0, IPPROTO_TCP, 0)); if (kwqe3->ka_timeout) { tstorm_buf->ka_enable = 1; tstorm_buf->ka_timeout = kwqe3->ka_timeout; tstorm_buf->ka_interval = kwqe3->ka_interval; tstorm_buf->ka_max_probe_count = kwqe3->ka_max_probe_count; } tstorm_buf->max_rt_time = 0xffffffff; } static void cnic_init_bnx2x_mac(struct cnic_dev *dev) { struct bnx2x *bp = netdev_priv(dev->netdev); u32 pfid = bp->pfid; u8 *mac = dev->mac_addr; CNIC_WR8(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_LOCAL_MAC_ADDR0_OFFSET(pfid), mac[0]); CNIC_WR8(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_LOCAL_MAC_ADDR1_OFFSET(pfid), mac[1]); CNIC_WR8(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_LOCAL_MAC_ADDR2_OFFSET(pfid), mac[2]); CNIC_WR8(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_LOCAL_MAC_ADDR3_OFFSET(pfid), mac[3]); CNIC_WR8(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_LOCAL_MAC_ADDR4_OFFSET(pfid), mac[4]); CNIC_WR8(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_LOCAL_MAC_ADDR5_OFFSET(pfid), mac[5]); CNIC_WR8(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[5]); CNIC_WR8(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_TCP_VARS_LSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1, mac[4]); CNIC_WR8(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid), mac[3]); CNIC_WR8(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_TCP_VARS_MID_LOCAL_MAC_ADDR_OFFSET(pfid) + 1, mac[2]); CNIC_WR8(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid), mac[1]); CNIC_WR8(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_TCP_VARS_MSB_LOCAL_MAC_ADDR_OFFSET(pfid) + 1, mac[0]); } static int cnic_bnx2x_connect(struct cnic_dev *dev, struct kwqe *wqes[], u32 num, int *work) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct l4_kwq_connect_req1 *kwqe1 = (struct l4_kwq_connect_req1 *) wqes[0]; struct l4_kwq_connect_req3 *kwqe3; struct l5cm_active_conn_buffer *conn_buf; struct l5cm_conn_addr_params *conn_addr; union l5cm_specific_data l5_data; u32 l5_cid = kwqe1->pg_cid; struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; int ret; if (num < 2) { *work = num; return -EINVAL; } if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) *work = 3; else *work = 2; if (num < *work) { *work = num; return -EINVAL; } if (sizeof(*conn_buf) > CNIC_KWQ16_DATA_SIZE) { netdev_err(dev->netdev, "conn_buf size too big\n"); return -ENOMEM; } conn_buf = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data); if (!conn_buf) return -ENOMEM; memset(conn_buf, 0, sizeof(*conn_buf)); conn_addr = &conn_buf->conn_addr_buf; conn_addr->remote_addr_0 = csk->ha[0]; conn_addr->remote_addr_1 = csk->ha[1]; conn_addr->remote_addr_2 = csk->ha[2]; conn_addr->remote_addr_3 = csk->ha[3]; conn_addr->remote_addr_4 = csk->ha[4]; conn_addr->remote_addr_5 = csk->ha[5]; if (kwqe1->conn_flags & L4_KWQ_CONNECT_REQ1_IP_V6) { struct l4_kwq_connect_req2 *kwqe2 = (struct l4_kwq_connect_req2 *) wqes[1]; conn_addr->local_ip_addr.ip_addr_hi_hi = kwqe2->src_ip_v6_4; conn_addr->local_ip_addr.ip_addr_hi_lo = kwqe2->src_ip_v6_3; conn_addr->local_ip_addr.ip_addr_lo_hi = kwqe2->src_ip_v6_2; conn_addr->remote_ip_addr.ip_addr_hi_hi = kwqe2->dst_ip_v6_4; conn_addr->remote_ip_addr.ip_addr_hi_lo = kwqe2->dst_ip_v6_3; conn_addr->remote_ip_addr.ip_addr_lo_hi = kwqe2->dst_ip_v6_2; conn_addr->params |= L5CM_CONN_ADDR_PARAMS_IP_VERSION; } kwqe3 = (struct l4_kwq_connect_req3 *) wqes[*work - 1]; conn_addr->local_ip_addr.ip_addr_lo_lo = kwqe1->src_ip; conn_addr->remote_ip_addr.ip_addr_lo_lo = kwqe1->dst_ip; conn_addr->local_tcp_port = kwqe1->src_port; conn_addr->remote_tcp_port = kwqe1->dst_port; conn_addr->pmtu = kwqe3->pmtu; cnic_init_storm_conn_bufs(dev, kwqe1, kwqe3, conn_buf); CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_LOCAL_VLAN_OFFSET(bp->pfid), csk->vlan_id); ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_TCP_CONNECT, kwqe1->cid, ISCSI_CONNECTION_TYPE, &l5_data); if (!ret) set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags); return ret; } static int cnic_bnx2x_close(struct cnic_dev *dev, struct kwqe *kwqe) { struct l4_kwq_close_req *req = (struct l4_kwq_close_req *) kwqe; union l5cm_specific_data l5_data; int ret; memset(&l5_data, 0, sizeof(l5_data)); ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_CLOSE, req->cid, ISCSI_CONNECTION_TYPE, &l5_data); return ret; } static int cnic_bnx2x_reset(struct cnic_dev *dev, struct kwqe *kwqe) { struct l4_kwq_reset_req *req = (struct l4_kwq_reset_req *) kwqe; union l5cm_specific_data l5_data; int ret; memset(&l5_data, 0, sizeof(l5_data)); ret = cnic_submit_kwqe_16(dev, L5CM_RAMROD_CMD_ID_ABORT, req->cid, ISCSI_CONNECTION_TYPE, &l5_data); return ret; } static int cnic_bnx2x_offload_pg(struct cnic_dev *dev, struct kwqe *kwqe) { struct l4_kwq_offload_pg *req = (struct l4_kwq_offload_pg *) kwqe; struct l4_kcq kcqe; struct kcqe *cqes[1]; memset(&kcqe, 0, sizeof(kcqe)); kcqe.pg_host_opaque = req->host_opaque; kcqe.pg_cid = req->host_opaque; kcqe.op_code = L4_KCQE_OPCODE_VALUE_OFFLOAD_PG; cqes[0] = (struct kcqe *) &kcqe; cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1); return 0; } static int cnic_bnx2x_update_pg(struct cnic_dev *dev, struct kwqe *kwqe) { struct l4_kwq_update_pg *req = (struct l4_kwq_update_pg *) kwqe; struct l4_kcq kcqe; struct kcqe *cqes[1]; memset(&kcqe, 0, sizeof(kcqe)); kcqe.pg_host_opaque = req->pg_host_opaque; kcqe.pg_cid = req->pg_cid; kcqe.op_code = L4_KCQE_OPCODE_VALUE_UPDATE_PG; cqes[0] = (struct kcqe *) &kcqe; cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_L4, cqes, 1); return 0; } static int cnic_bnx2x_fcoe_stat(struct cnic_dev *dev, struct kwqe *kwqe) { struct fcoe_kwqe_stat *req; struct fcoe_stat_ramrod_params *fcoe_stat; union l5cm_specific_data l5_data; struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); int ret; u32 cid; req = (struct fcoe_kwqe_stat *) kwqe; cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid); fcoe_stat = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data); if (!fcoe_stat) return -ENOMEM; memset(fcoe_stat, 0, sizeof(*fcoe_stat)); memcpy(&fcoe_stat->stat_kwqe, req, sizeof(*req)); ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_STAT_FUNC, cid, FCOE_CONNECTION_TYPE, &l5_data); return ret; } static int cnic_bnx2x_fcoe_init1(struct cnic_dev *dev, struct kwqe *wqes[], u32 num, int *work) { int ret; struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); u32 cid; struct fcoe_init_ramrod_params *fcoe_init; struct fcoe_kwqe_init1 *req1; struct fcoe_kwqe_init2 *req2; struct fcoe_kwqe_init3 *req3; union l5cm_specific_data l5_data; if (num < 3) { *work = num; return -EINVAL; } req1 = (struct fcoe_kwqe_init1 *) wqes[0]; req2 = (struct fcoe_kwqe_init2 *) wqes[1]; req3 = (struct fcoe_kwqe_init3 *) wqes[2]; if (req2->hdr.op_code != FCOE_KWQE_OPCODE_INIT2) { *work = 1; return -EINVAL; } if (req3->hdr.op_code != FCOE_KWQE_OPCODE_INIT3) { *work = 2; return -EINVAL; } if (sizeof(*fcoe_init) > CNIC_KWQ16_DATA_SIZE) { netdev_err(dev->netdev, "fcoe_init size too big\n"); return -ENOMEM; } fcoe_init = cnic_get_kwqe_16_data(cp, BNX2X_FCOE_L5_CID_BASE, &l5_data); if (!fcoe_init) return -ENOMEM; memset(fcoe_init, 0, sizeof(*fcoe_init)); memcpy(&fcoe_init->init_kwqe1, req1, sizeof(*req1)); memcpy(&fcoe_init->init_kwqe2, req2, sizeof(*req2)); memcpy(&fcoe_init->init_kwqe3, req3, sizeof(*req3)); fcoe_init->eq_pbl_base.lo = cp->kcq2.dma.pgtbl_map & 0xffffffff; fcoe_init->eq_pbl_base.hi = (u64) cp->kcq2.dma.pgtbl_map >> 32; fcoe_init->eq_pbl_size = cp->kcq2.dma.num_pages; fcoe_init->sb_num = cp->status_blk_num; fcoe_init->eq_prod = MAX_KCQ_IDX; fcoe_init->sb_id = HC_INDEX_FCOE_EQ_CONS; cp->kcq2.sw_prod_idx = 0; cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid); ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_INIT_FUNC, cid, FCOE_CONNECTION_TYPE, &l5_data); *work = 3; return ret; } static int cnic_bnx2x_fcoe_ofld1(struct cnic_dev *dev, struct kwqe *wqes[], u32 num, int *work) { int ret = 0; u32 cid = -1, l5_cid; struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct fcoe_kwqe_conn_offload1 *req1; struct fcoe_kwqe_conn_offload2 *req2; struct fcoe_kwqe_conn_offload3 *req3; struct fcoe_kwqe_conn_offload4 *req4; struct fcoe_conn_offload_ramrod_params *fcoe_offload; struct cnic_context *ctx; struct fcoe_context *fctx; struct regpair ctx_addr; union l5cm_specific_data l5_data; struct fcoe_kcqe kcqe; struct kcqe *cqes[1]; if (num < 4) { *work = num; return -EINVAL; } req1 = (struct fcoe_kwqe_conn_offload1 *) wqes[0]; req2 = (struct fcoe_kwqe_conn_offload2 *) wqes[1]; req3 = (struct fcoe_kwqe_conn_offload3 *) wqes[2]; req4 = (struct fcoe_kwqe_conn_offload4 *) wqes[3]; *work = 4; l5_cid = req1->fcoe_conn_id; if (l5_cid >= dev->max_fcoe_conn) goto err_reply; l5_cid += BNX2X_FCOE_L5_CID_BASE; ctx = &cp->ctx_tbl[l5_cid]; if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) goto err_reply; ret = cnic_alloc_bnx2x_conn_resc(dev, l5_cid); if (ret) { ret = 0; goto err_reply; } cid = ctx->cid; fctx = cnic_get_bnx2x_ctx(dev, cid, 1, &ctx_addr); if (fctx) { u32 hw_cid = BNX2X_HW_CID(bp, cid); u32 val; val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_XCM_AG, FCOE_CONNECTION_TYPE); fctx->xstorm_ag_context.cdu_reserved = val; val = CDU_RSRVD_VALUE_TYPE_A(hw_cid, CDU_REGION_NUMBER_UCM_AG, FCOE_CONNECTION_TYPE); fctx->ustorm_ag_context.cdu_usage = val; } if (sizeof(*fcoe_offload) > CNIC_KWQ16_DATA_SIZE) { netdev_err(dev->netdev, "fcoe_offload size too big\n"); goto err_reply; } fcoe_offload = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data); if (!fcoe_offload) goto err_reply; memset(fcoe_offload, 0, sizeof(*fcoe_offload)); memcpy(&fcoe_offload->offload_kwqe1, req1, sizeof(*req1)); memcpy(&fcoe_offload->offload_kwqe2, req2, sizeof(*req2)); memcpy(&fcoe_offload->offload_kwqe3, req3, sizeof(*req3)); memcpy(&fcoe_offload->offload_kwqe4, req4, sizeof(*req4)); cid = BNX2X_HW_CID(bp, cid); ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_OFFLOAD_CONN, cid, FCOE_CONNECTION_TYPE, &l5_data); if (!ret) set_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags); return ret; err_reply: if (cid != -1) cnic_free_bnx2x_conn_resc(dev, l5_cid); memset(&kcqe, 0, sizeof(kcqe)); kcqe.op_code = FCOE_KCQE_OPCODE_OFFLOAD_CONN; kcqe.fcoe_conn_id = req1->fcoe_conn_id; kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE; cqes[0] = (struct kcqe *) &kcqe; cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1); return ret; } static int cnic_bnx2x_fcoe_enable(struct cnic_dev *dev, struct kwqe *kwqe) { struct fcoe_kwqe_conn_enable_disable *req; struct fcoe_conn_enable_disable_ramrod_params *fcoe_enable; union l5cm_specific_data l5_data; int ret; u32 cid, l5_cid; struct cnic_local *cp = dev->cnic_priv; req = (struct fcoe_kwqe_conn_enable_disable *) kwqe; cid = req->context_id; l5_cid = req->conn_id + BNX2X_FCOE_L5_CID_BASE; if (sizeof(*fcoe_enable) > CNIC_KWQ16_DATA_SIZE) { netdev_err(dev->netdev, "fcoe_enable size too big\n"); return -ENOMEM; } fcoe_enable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data); if (!fcoe_enable) return -ENOMEM; memset(fcoe_enable, 0, sizeof(*fcoe_enable)); memcpy(&fcoe_enable->enable_disable_kwqe, req, sizeof(*req)); ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_ENABLE_CONN, cid, FCOE_CONNECTION_TYPE, &l5_data); return ret; } static int cnic_bnx2x_fcoe_disable(struct cnic_dev *dev, struct kwqe *kwqe) { struct fcoe_kwqe_conn_enable_disable *req; struct fcoe_conn_enable_disable_ramrod_params *fcoe_disable; union l5cm_specific_data l5_data; int ret; u32 cid, l5_cid; struct cnic_local *cp = dev->cnic_priv; req = (struct fcoe_kwqe_conn_enable_disable *) kwqe; cid = req->context_id; l5_cid = req->conn_id; if (l5_cid >= dev->max_fcoe_conn) return -EINVAL; l5_cid += BNX2X_FCOE_L5_CID_BASE; if (sizeof(*fcoe_disable) > CNIC_KWQ16_DATA_SIZE) { netdev_err(dev->netdev, "fcoe_disable size too big\n"); return -ENOMEM; } fcoe_disable = cnic_get_kwqe_16_data(cp, l5_cid, &l5_data); if (!fcoe_disable) return -ENOMEM; memset(fcoe_disable, 0, sizeof(*fcoe_disable)); memcpy(&fcoe_disable->enable_disable_kwqe, req, sizeof(*req)); ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DISABLE_CONN, cid, FCOE_CONNECTION_TYPE, &l5_data); return ret; } static int cnic_bnx2x_fcoe_destroy(struct cnic_dev *dev, struct kwqe *kwqe) { struct fcoe_kwqe_conn_destroy *req; union l5cm_specific_data l5_data; int ret; u32 cid, l5_cid; struct cnic_local *cp = dev->cnic_priv; struct cnic_context *ctx; struct fcoe_kcqe kcqe; struct kcqe *cqes[1]; req = (struct fcoe_kwqe_conn_destroy *) kwqe; cid = req->context_id; l5_cid = req->conn_id; if (l5_cid >= dev->max_fcoe_conn) return -EINVAL; l5_cid += BNX2X_FCOE_L5_CID_BASE; ctx = &cp->ctx_tbl[l5_cid]; init_waitqueue_head(&ctx->waitq); ctx->wait_cond = 0; memset(&kcqe, 0, sizeof(kcqe)); kcqe.completion_status = FCOE_KCQE_COMPLETION_STATUS_ERROR; memset(&l5_data, 0, sizeof(l5_data)); ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_TERMINATE_CONN, cid, FCOE_CONNECTION_TYPE, &l5_data); if (ret == 0) { wait_event_timeout(ctx->waitq, ctx->wait_cond, CNIC_RAMROD_TMO); if (ctx->wait_cond) kcqe.completion_status = 0; } set_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags); queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(2000)); kcqe.op_code = FCOE_KCQE_OPCODE_DESTROY_CONN; kcqe.fcoe_conn_id = req->conn_id; kcqe.fcoe_conn_context_id = cid; cqes[0] = (struct kcqe *) &kcqe; cnic_reply_bnx2x_kcqes(dev, CNIC_ULP_FCOE, cqes, 1); return ret; } static void cnic_bnx2x_delete_wait(struct cnic_dev *dev, u32 start_cid) { struct cnic_local *cp = dev->cnic_priv; u32 i; for (i = start_cid; i < cp->max_cid_space; i++) { struct cnic_context *ctx = &cp->ctx_tbl[i]; int j; while (test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags)) msleep(10); for (j = 0; j < 5; j++) { if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) break; msleep(20); } if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) netdev_warn(dev->netdev, "CID %x not deleted\n", ctx->cid); } } static int cnic_bnx2x_fcoe_fw_destroy(struct cnic_dev *dev, struct kwqe *kwqe) { union l5cm_specific_data l5_data; struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); int ret; u32 cid; cnic_bnx2x_delete_wait(dev, MAX_ISCSI_TBL_SZ); cid = BNX2X_HW_CID(bp, cp->fcoe_init_cid); memset(&l5_data, 0, sizeof(l5_data)); ret = cnic_submit_kwqe_16(dev, FCOE_RAMROD_CMD_ID_DESTROY_FUNC, cid, FCOE_CONNECTION_TYPE, &l5_data); return ret; } static void cnic_bnx2x_kwqe_err(struct cnic_dev *dev, struct kwqe *kwqe) { struct cnic_local *cp = dev->cnic_priv; struct kcqe kcqe; struct kcqe *cqes[1]; u32 cid; u32 opcode = KWQE_OPCODE(kwqe->kwqe_op_flag); u32 layer_code = kwqe->kwqe_op_flag & KWQE_LAYER_MASK; u32 kcqe_op; int ulp_type; cid = kwqe->kwqe_info0; memset(&kcqe, 0, sizeof(kcqe)); if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_FCOE) { u32 l5_cid = 0; ulp_type = CNIC_ULP_FCOE; if (opcode == FCOE_KWQE_OPCODE_DISABLE_CONN) { struct fcoe_kwqe_conn_enable_disable *req; req = (struct fcoe_kwqe_conn_enable_disable *) kwqe; kcqe_op = FCOE_KCQE_OPCODE_DISABLE_CONN; cid = req->context_id; l5_cid = req->conn_id; } else if (opcode == FCOE_KWQE_OPCODE_DESTROY) { kcqe_op = FCOE_KCQE_OPCODE_DESTROY_FUNC; } else { return; } kcqe.kcqe_op_flag = kcqe_op << KCQE_FLAGS_OPCODE_SHIFT; kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_FCOE; kcqe.kcqe_info1 = FCOE_KCQE_COMPLETION_STATUS_PARITY_ERROR; kcqe.kcqe_info2 = cid; kcqe.kcqe_info0 = l5_cid; } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L5_ISCSI) { ulp_type = CNIC_ULP_ISCSI; if (opcode == ISCSI_KWQE_OPCODE_UPDATE_CONN) cid = kwqe->kwqe_info1; kcqe.kcqe_op_flag = (opcode + 0x10) << KCQE_FLAGS_OPCODE_SHIFT; kcqe.kcqe_op_flag |= KCQE_FLAGS_LAYER_MASK_L5_ISCSI; kcqe.kcqe_info1 = ISCSI_KCQE_COMPLETION_STATUS_PARITY_ERR; kcqe.kcqe_info2 = cid; cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &kcqe.kcqe_info0); } else if (layer_code == KWQE_FLAGS_LAYER_MASK_L4) { struct l4_kcq *l4kcqe = (struct l4_kcq *) &kcqe; ulp_type = CNIC_ULP_L4; if (opcode == L4_KWQE_OPCODE_VALUE_CONNECT1) kcqe_op = L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE; else if (opcode == L4_KWQE_OPCODE_VALUE_RESET) kcqe_op = L4_KCQE_OPCODE_VALUE_RESET_COMP; else if (opcode == L4_KWQE_OPCODE_VALUE_CLOSE) kcqe_op = L4_KCQE_OPCODE_VALUE_CLOSE_COMP; else return; kcqe.kcqe_op_flag = (kcqe_op << KCQE_FLAGS_OPCODE_SHIFT) | KCQE_FLAGS_LAYER_MASK_L4; l4kcqe->status = L4_KCQE_COMPLETION_STATUS_PARITY_ERROR; l4kcqe->cid = cid; cnic_get_l5_cid(cp, BNX2X_SW_CID(cid), &l4kcqe->conn_id); } else { return; } cqes[0] = &kcqe; cnic_reply_bnx2x_kcqes(dev, ulp_type, cqes, 1); } static int cnic_submit_bnx2x_iscsi_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], u32 num_wqes) { int i, work, ret; u32 opcode; struct kwqe *kwqe; if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) return -EAGAIN; /* bnx2 is down */ for (i = 0; i < num_wqes; ) { kwqe = wqes[i]; opcode = KWQE_OPCODE(kwqe->kwqe_op_flag); work = 1; switch (opcode) { case ISCSI_KWQE_OPCODE_INIT1: ret = cnic_bnx2x_iscsi_init1(dev, kwqe); break; case ISCSI_KWQE_OPCODE_INIT2: ret = cnic_bnx2x_iscsi_init2(dev, kwqe); break; case ISCSI_KWQE_OPCODE_OFFLOAD_CONN1: ret = cnic_bnx2x_iscsi_ofld1(dev, &wqes[i], num_wqes - i, &work); break; case ISCSI_KWQE_OPCODE_UPDATE_CONN: ret = cnic_bnx2x_iscsi_update(dev, kwqe); break; case ISCSI_KWQE_OPCODE_DESTROY_CONN: ret = cnic_bnx2x_iscsi_destroy(dev, kwqe); break; case L4_KWQE_OPCODE_VALUE_CONNECT1: ret = cnic_bnx2x_connect(dev, &wqes[i], num_wqes - i, &work); break; case L4_KWQE_OPCODE_VALUE_CLOSE: ret = cnic_bnx2x_close(dev, kwqe); break; case L4_KWQE_OPCODE_VALUE_RESET: ret = cnic_bnx2x_reset(dev, kwqe); break; case L4_KWQE_OPCODE_VALUE_OFFLOAD_PG: ret = cnic_bnx2x_offload_pg(dev, kwqe); break; case L4_KWQE_OPCODE_VALUE_UPDATE_PG: ret = cnic_bnx2x_update_pg(dev, kwqe); break; case L4_KWQE_OPCODE_VALUE_UPLOAD_PG: ret = 0; break; default: ret = 0; netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n", opcode); break; } if (ret < 0) { netdev_err(dev->netdev, "KWQE(0x%x) failed\n", opcode); /* Possibly bnx2x parity error, send completion * to ulp drivers with error code to speed up * cleanup and reset recovery. */ if (ret == -EIO || ret == -EAGAIN) cnic_bnx2x_kwqe_err(dev, kwqe); } i += work; } return 0; } static int cnic_submit_bnx2x_fcoe_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], u32 num_wqes) { struct bnx2x *bp = netdev_priv(dev->netdev); int i, work, ret; u32 opcode; struct kwqe *kwqe; if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) return -EAGAIN; /* bnx2 is down */ if (!BNX2X_CHIP_IS_E2_PLUS(bp)) return -EINVAL; for (i = 0; i < num_wqes; ) { kwqe = wqes[i]; opcode = KWQE_OPCODE(kwqe->kwqe_op_flag); work = 1; switch (opcode) { case FCOE_KWQE_OPCODE_INIT1: ret = cnic_bnx2x_fcoe_init1(dev, &wqes[i], num_wqes - i, &work); break; case FCOE_KWQE_OPCODE_OFFLOAD_CONN1: ret = cnic_bnx2x_fcoe_ofld1(dev, &wqes[i], num_wqes - i, &work); break; case FCOE_KWQE_OPCODE_ENABLE_CONN: ret = cnic_bnx2x_fcoe_enable(dev, kwqe); break; case FCOE_KWQE_OPCODE_DISABLE_CONN: ret = cnic_bnx2x_fcoe_disable(dev, kwqe); break; case FCOE_KWQE_OPCODE_DESTROY_CONN: ret = cnic_bnx2x_fcoe_destroy(dev, kwqe); break; case FCOE_KWQE_OPCODE_DESTROY: ret = cnic_bnx2x_fcoe_fw_destroy(dev, kwqe); break; case FCOE_KWQE_OPCODE_STAT: ret = cnic_bnx2x_fcoe_stat(dev, kwqe); break; default: ret = 0; netdev_err(dev->netdev, "Unknown type of KWQE(0x%x)\n", opcode); break; } if (ret < 0) { netdev_err(dev->netdev, "KWQE(0x%x) failed\n", opcode); /* Possibly bnx2x parity error, send completion * to ulp drivers with error code to speed up * cleanup and reset recovery. */ if (ret == -EIO || ret == -EAGAIN) cnic_bnx2x_kwqe_err(dev, kwqe); } i += work; } return 0; } static int cnic_submit_bnx2x_kwqes(struct cnic_dev *dev, struct kwqe *wqes[], u32 num_wqes) { int ret = -EINVAL; u32 layer_code; if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) return -EAGAIN; /* bnx2x is down */ if (!num_wqes) return 0; layer_code = wqes[0]->kwqe_op_flag & KWQE_LAYER_MASK; switch (layer_code) { case KWQE_FLAGS_LAYER_MASK_L5_ISCSI: case KWQE_FLAGS_LAYER_MASK_L4: case KWQE_FLAGS_LAYER_MASK_L2: ret = cnic_submit_bnx2x_iscsi_kwqes(dev, wqes, num_wqes); break; case KWQE_FLAGS_LAYER_MASK_L5_FCOE: ret = cnic_submit_bnx2x_fcoe_kwqes(dev, wqes, num_wqes); break; } return ret; } static inline u32 cnic_get_kcqe_layer_mask(u32 opflag) { if (unlikely(KCQE_OPCODE(opflag) == FCOE_RAMROD_CMD_ID_TERMINATE_CONN)) return KCQE_FLAGS_LAYER_MASK_L4; return opflag & KCQE_FLAGS_LAYER_MASK; } static void service_kcqes(struct cnic_dev *dev, int num_cqes) { struct cnic_local *cp = dev->cnic_priv; int i, j, comp = 0; i = 0; j = 1; while (num_cqes) { struct cnic_ulp_ops *ulp_ops; int ulp_type; u32 kcqe_op_flag = cp->completed_kcq[i]->kcqe_op_flag; u32 kcqe_layer = cnic_get_kcqe_layer_mask(kcqe_op_flag); if (unlikely(kcqe_op_flag & KCQE_RAMROD_COMPLETION)) comp++; while (j < num_cqes) { u32 next_op = cp->completed_kcq[i + j]->kcqe_op_flag; if (cnic_get_kcqe_layer_mask(next_op) != kcqe_layer) break; if (unlikely(next_op & KCQE_RAMROD_COMPLETION)) comp++; j++; } if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_RDMA) ulp_type = CNIC_ULP_RDMA; else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_ISCSI) ulp_type = CNIC_ULP_ISCSI; else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L5_FCOE) ulp_type = CNIC_ULP_FCOE; else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L4) ulp_type = CNIC_ULP_L4; else if (kcqe_layer == KCQE_FLAGS_LAYER_MASK_L2) goto end; else { netdev_err(dev->netdev, "Unknown type of KCQE(0x%x)\n", kcqe_op_flag); goto end; } rcu_read_lock(); ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); if (likely(ulp_ops)) { ulp_ops->indicate_kcqes(cp->ulp_handle[ulp_type], cp->completed_kcq + i, j); } rcu_read_unlock(); end: num_cqes -= j; i += j; j = 1; } if (unlikely(comp)) cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp); } static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info) { struct cnic_local *cp = dev->cnic_priv; u16 i, ri, hw_prod, last; struct kcqe *kcqe; int kcqe_cnt = 0, last_cnt = 0; i = ri = last = info->sw_prod_idx; ri &= MAX_KCQ_IDX; hw_prod = *info->hw_prod_idx_ptr; hw_prod = info->hw_idx(hw_prod); while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) { kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)]; cp->completed_kcq[kcqe_cnt++] = kcqe; i = info->next_idx(i); ri = i & MAX_KCQ_IDX; if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) { last_cnt = kcqe_cnt; last = i; } } info->sw_prod_idx = last; return last_cnt; } static int cnic_l2_completion(struct cnic_local *cp) { u16 hw_cons, sw_cons; struct cnic_uio_dev *udev = cp->udev; union eth_rx_cqe *cqe, *cqe_ring = (union eth_rx_cqe *) (udev->l2_ring + (2 * CNIC_PAGE_SIZE)); u32 cmd; int comp = 0; if (!test_bit(CNIC_F_BNX2X_CLASS, &cp->dev->flags)) return 0; hw_cons = *cp->rx_cons_ptr; if ((hw_cons & BNX2X_MAX_RCQ_DESC_CNT) == BNX2X_MAX_RCQ_DESC_CNT) hw_cons++; sw_cons = cp->rx_cons; while (sw_cons != hw_cons) { u8 cqe_fp_flags; cqe = &cqe_ring[sw_cons & BNX2X_MAX_RCQ_DESC_CNT]; cqe_fp_flags = cqe->fast_path_cqe.type_error_flags; if (cqe_fp_flags & ETH_FAST_PATH_RX_CQE_TYPE) { cmd = le32_to_cpu(cqe->ramrod_cqe.conn_and_cmd_data); cmd >>= COMMON_RAMROD_ETH_RX_CQE_CMD_ID_SHIFT; if (cmd == RAMROD_CMD_ID_ETH_CLIENT_SETUP || cmd == RAMROD_CMD_ID_ETH_HALT) comp++; } sw_cons = BNX2X_NEXT_RCQE(sw_cons); } return comp; } static void cnic_chk_pkt_rings(struct cnic_local *cp) { u16 rx_cons, tx_cons; int comp = 0; if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags)) return; rx_cons = *cp->rx_cons_ptr; tx_cons = *cp->tx_cons_ptr; if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) { if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags)) comp = cnic_l2_completion(cp); cp->tx_cons = tx_cons; cp->rx_cons = rx_cons; if (cp->udev) uio_event_notify(&cp->udev->cnic_uinfo); } if (comp) clear_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags); } static u32 cnic_service_bnx2_queues(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; u32 status_idx = (u16) *cp->kcq1.status_idx_ptr; int kcqe_cnt; /* status block index must be read before reading other fields */ rmb(); cp->kwq_con_idx = *cp->kwq_con_idx_ptr; while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) { service_kcqes(dev, kcqe_cnt); /* Tell compiler that status_blk fields can change. */ barrier(); status_idx = (u16) *cp->kcq1.status_idx_ptr; /* status block index must be read first */ rmb(); cp->kwq_con_idx = *cp->kwq_con_idx_ptr; } CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx); cnic_chk_pkt_rings(cp); return status_idx; } static int cnic_service_bnx2(void *data, void *status_blk) { struct cnic_dev *dev = data; if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) { struct status_block *sblk = status_blk; return sblk->status_idx; } return cnic_service_bnx2_queues(dev); } static void cnic_service_bnx2_msix(unsigned long data) { struct cnic_dev *dev = (struct cnic_dev *) data; struct cnic_local *cp = dev->cnic_priv; cp->last_status_idx = cnic_service_bnx2_queues(dev); CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); } static void cnic_doirq(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; if (likely(test_bit(CNIC_F_CNIC_UP, &dev->flags))) { u16 prod = cp->kcq1.sw_prod_idx & MAX_KCQ_IDX; prefetch(cp->status_blk.gen); prefetch(&cp->kcq1.kcq[KCQ_PG(prod)][KCQ_IDX(prod)]); tasklet_schedule(&cp->cnic_irq_task); } } static irqreturn_t cnic_irq(int irq, void *dev_instance) { struct cnic_dev *dev = dev_instance; struct cnic_local *cp = dev->cnic_priv; if (cp->ack_int) cp->ack_int(dev); cnic_doirq(dev); return IRQ_HANDLED; } static inline void cnic_ack_bnx2x_int(struct cnic_dev *dev, u8 id, u8 storm, u16 index, u8 op, u8 update) { struct bnx2x *bp = netdev_priv(dev->netdev); u32 hc_addr = (HC_REG_COMMAND_REG + BP_PORT(bp) * 32 + COMMAND_REG_INT_ACK); struct igu_ack_register igu_ack; igu_ack.status_block_index = index; igu_ack.sb_id_and_flags = ((id << IGU_ACK_REGISTER_STATUS_BLOCK_ID_SHIFT) | (storm << IGU_ACK_REGISTER_STORM_ID_SHIFT) | (update << IGU_ACK_REGISTER_UPDATE_INDEX_SHIFT) | (op << IGU_ACK_REGISTER_INTERRUPT_MODE_SHIFT)); CNIC_WR(dev, hc_addr, (*(u32 *)&igu_ack)); } static void cnic_ack_igu_sb(struct cnic_dev *dev, u8 igu_sb_id, u8 segment, u16 index, u8 op, u8 update) { struct igu_regular cmd_data; u32 igu_addr = BAR_IGU_INTMEM + (IGU_CMD_INT_ACK_BASE + igu_sb_id) * 8; cmd_data.sb_id_and_flags = (index << IGU_REGULAR_SB_INDEX_SHIFT) | (segment << IGU_REGULAR_SEGMENT_ACCESS_SHIFT) | (update << IGU_REGULAR_BUPDATE_SHIFT) | (op << IGU_REGULAR_ENABLE_INT_SHIFT); CNIC_WR(dev, igu_addr, cmd_data.sb_id_and_flags); } static void cnic_ack_bnx2x_msix(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, 0, IGU_INT_DISABLE, 0); } static void cnic_ack_bnx2x_e2_msix(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, 0, IGU_INT_DISABLE, 0); } static void cnic_arm_bnx2x_msix(struct cnic_dev *dev, u32 idx) { struct cnic_local *cp = dev->cnic_priv; cnic_ack_bnx2x_int(dev, cp->bnx2x_igu_sb_id, CSTORM_ID, idx, IGU_INT_ENABLE, 1); } static void cnic_arm_bnx2x_e2_msix(struct cnic_dev *dev, u32 idx) { struct cnic_local *cp = dev->cnic_priv; cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, idx, IGU_INT_ENABLE, 1); } static u32 cnic_service_bnx2x_kcq(struct cnic_dev *dev, struct kcq_info *info) { u32 last_status = *info->status_idx_ptr; int kcqe_cnt; /* status block index must be read before reading the KCQ */ rmb(); while ((kcqe_cnt = cnic_get_kcqes(dev, info))) { service_kcqes(dev, kcqe_cnt); /* Tell compiler that sblk fields can change. */ barrier(); last_status = *info->status_idx_ptr; /* status block index must be read before reading the KCQ */ rmb(); } return last_status; } static void cnic_service_bnx2x_bh(unsigned long data) { struct cnic_dev *dev = (struct cnic_dev *) data; struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); u32 status_idx, new_status_idx; if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags))) return; while (1) { status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq1); CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx + MAX_KCQ_IDX); if (!CNIC_SUPPORTS_FCOE(bp)) { cp->arm_int(dev, status_idx); break; } new_status_idx = cnic_service_bnx2x_kcq(dev, &cp->kcq2); if (new_status_idx != status_idx) continue; CNIC_WR16(dev, cp->kcq2.io_addr, cp->kcq2.sw_prod_idx + MAX_KCQ_IDX); cnic_ack_igu_sb(dev, cp->bnx2x_igu_sb_id, IGU_SEG_ACCESS_DEF, status_idx, IGU_INT_ENABLE, 1); break; } } static int cnic_service_bnx2x(void *data, void *status_blk) { struct cnic_dev *dev = data; struct cnic_local *cp = dev->cnic_priv; if (!(cp->ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) cnic_doirq(dev); cnic_chk_pkt_rings(cp); return 0; } static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type) { struct cnic_ulp_ops *ulp_ops; if (if_type == CNIC_ULP_ISCSI) cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); mutex_lock(&cnic_lock); ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type], lockdep_is_held(&cnic_lock)); if (!ulp_ops) { mutex_unlock(&cnic_lock); return; } 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_stop(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++) cnic_ulp_stop_one(cp, 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 = rcu_dereference_protected(cp->ulp_ops[if_type], lockdep_is_held(&cnic_lock)); 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_copy_ulp_stats(struct cnic_dev *dev, int ulp_type) { struct cnic_local *cp = dev->cnic_priv; struct cnic_ulp_ops *ulp_ops; int rc; mutex_lock(&cnic_lock); ulp_ops = rcu_dereference_protected(cp->ulp_ops[ulp_type], lockdep_is_held(&cnic_lock)); if (ulp_ops && ulp_ops->cnic_get_stats) rc = ulp_ops->cnic_get_stats(cp->ulp_handle[ulp_type]); else rc = -ENODEV; mutex_unlock(&cnic_lock); return rc; } static int cnic_ctl(void *data, struct cnic_ctl_info *info) { struct cnic_dev *dev = data; int ulp_type = CNIC_ULP_ISCSI; switch (info->cmd) { case CNIC_CTL_STOP_CMD: cnic_hold(dev); cnic_ulp_stop(dev); cnic_stop_hw(dev); cnic_put(dev); break; case CNIC_CTL_START_CMD: cnic_hold(dev); if (!cnic_start_hw(dev)) cnic_ulp_start(dev); cnic_put(dev); break; case CNIC_CTL_STOP_ISCSI_CMD: { struct cnic_local *cp = dev->cnic_priv; set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags); queue_delayed_work(cnic_wq, &cp->delete_task, 0); break; } case CNIC_CTL_COMPLETION_CMD: { struct cnic_ctl_completion *comp = &info->data.comp; u32 cid = BNX2X_SW_CID(comp->cid); u32 l5_cid; struct cnic_local *cp = dev->cnic_priv; if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) break; if (cnic_get_l5_cid(cp, cid, &l5_cid) == 0) { struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; if (unlikely(comp->error)) { set_bit(CTX_FL_CID_ERROR, &ctx->ctx_flags); netdev_err(dev->netdev, "CID %x CFC delete comp error %x\n", cid, comp->error); } ctx->wait_cond = 1; wake_up(&ctx->waitq); } break; } case CNIC_CTL_FCOE_STATS_GET_CMD: ulp_type = CNIC_ULP_FCOE; /* fall through */ case CNIC_CTL_ISCSI_STATS_GET_CMD: cnic_hold(dev); cnic_copy_ulp_stats(dev, ulp_type); 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_prot(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_prot(i); if (!ulp_ops || !ulp_ops->cnic_exit) { mutex_unlock(&cnic_lock); continue; } ulp_get(ulp_ops); mutex_unlock(&cnic_lock); if (test_and_clear_bit(ULP_F_INIT, &cp->ulp_flags[i])) ulp_ops->cnic_exit(dev); ulp_put(ulp_ops); } } static int cnic_cm_offload_pg(struct cnic_sock *csk) { struct cnic_dev *dev = csk->dev; struct l4_kwq_offload_pg *l4kwqe; struct kwqe *wqes[1]; l4kwqe = (struct l4_kwq_offload_pg *) &csk->kwqe1; memset(l4kwqe, 0, sizeof(*l4kwqe)); wqes[0] = (struct kwqe *) l4kwqe; l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_OFFLOAD_PG; l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_OFFLOAD_PG_LAYER_CODE_SHIFT; l4kwqe->l2hdr_nbytes = ETH_HLEN; l4kwqe->da0 = csk->ha[0]; l4kwqe->da1 = csk->ha[1]; l4kwqe->da2 = csk->ha[2]; l4kwqe->da3 = csk->ha[3]; l4kwqe->da4 = csk->ha[4]; l4kwqe->da5 = csk->ha[5]; l4kwqe->sa0 = dev->mac_addr[0]; l4kwqe->sa1 = dev->mac_addr[1]; l4kwqe->sa2 = dev->mac_addr[2]; l4kwqe->sa3 = dev->mac_addr[3]; l4kwqe->sa4 = dev->mac_addr[4]; l4kwqe->sa5 = dev->mac_addr[5]; l4kwqe->etype = ETH_P_IP; l4kwqe->ipid_start = DEF_IPID_START; l4kwqe->host_opaque = csk->l5_cid; if (csk->vlan_id) { l4kwqe->pg_flags |= L4_KWQ_OFFLOAD_PG_VLAN_TAGGING; l4kwqe->vlan_tag = csk->vlan_id; l4kwqe->l2hdr_nbytes += 4; } return dev->submit_kwqes(dev, wqes, 1); } static int cnic_cm_update_pg(struct cnic_sock *csk) { struct cnic_dev *dev = csk->dev; struct l4_kwq_update_pg *l4kwqe; struct kwqe *wqes[1]; l4kwqe = (struct l4_kwq_update_pg *) &csk->kwqe1; memset(l4kwqe, 0, sizeof(*l4kwqe)); wqes[0] = (struct kwqe *) l4kwqe; l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPDATE_PG; l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_UPDATE_PG_LAYER_CODE_SHIFT; l4kwqe->pg_cid = csk->pg_cid; l4kwqe->da0 = csk->ha[0]; l4kwqe->da1 = csk->ha[1]; l4kwqe->da2 = csk->ha[2]; l4kwqe->da3 = csk->ha[3]; l4kwqe->da4 = csk->ha[4]; l4kwqe->da5 = csk->ha[5]; l4kwqe->pg_host_opaque = csk->l5_cid; l4kwqe->pg_valids = L4_KWQ_UPDATE_PG_VALIDS_DA; return dev->submit_kwqes(dev, wqes, 1); } static int cnic_cm_upload_pg(struct cnic_sock *csk) { struct cnic_dev *dev = csk->dev; struct l4_kwq_upload *l4kwqe; struct kwqe *wqes[1]; l4kwqe = (struct l4_kwq_upload *) &csk->kwqe1; memset(l4kwqe, 0, sizeof(*l4kwqe)); wqes[0] = (struct kwqe *) l4kwqe; l4kwqe->opcode = L4_KWQE_OPCODE_VALUE_UPLOAD_PG; l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_UPLOAD_LAYER_CODE_SHIFT; l4kwqe->cid = csk->pg_cid; return dev->submit_kwqes(dev, wqes, 1); } static int cnic_cm_conn_req(struct cnic_sock *csk) { struct cnic_dev *dev = csk->dev; struct l4_kwq_connect_req1 *l4kwqe1; struct l4_kwq_connect_req2 *l4kwqe2; struct l4_kwq_connect_req3 *l4kwqe3; struct kwqe *wqes[3]; u8 tcp_flags = 0; int num_wqes = 2; l4kwqe1 = (struct l4_kwq_connect_req1 *) &csk->kwqe1; l4kwqe2 = (struct l4_kwq_connect_req2 *) &csk->kwqe2; l4kwqe3 = (struct l4_kwq_connect_req3 *) &csk->kwqe3; memset(l4kwqe1, 0, sizeof(*l4kwqe1)); memset(l4kwqe2, 0, sizeof(*l4kwqe2)); memset(l4kwqe3, 0, sizeof(*l4kwqe3)); l4kwqe3->op_code = L4_KWQE_OPCODE_VALUE_CONNECT3; l4kwqe3->flags = L4_LAYER_CODE << L4_KWQ_CONNECT_REQ3_LAYER_CODE_SHIFT; l4kwqe3->ka_timeout = csk->ka_timeout; l4kwqe3->ka_interval = csk->ka_interval; l4kwqe3->ka_max_probe_count = csk->ka_max_probe_count; l4kwqe3->tos = csk->tos; l4kwqe3->ttl = csk->ttl; l4kwqe3->snd_seq_scale = csk->snd_seq_scale; l4kwqe3->pmtu = csk->mtu; l4kwqe3->rcv_buf = csk->rcv_buf; l4kwqe3->snd_buf = csk->snd_buf; l4kwqe3->seed = csk->seed; wqes[0] = (struct kwqe *) l4kwqe1; if (test_bit(SK_F_IPV6, &csk->flags)) { wqes[1] = (struct kwqe *) l4kwqe2; wqes[2] = (struct kwqe *) l4kwqe3; num_wqes = 3; l4kwqe1->conn_flags = L4_KWQ_CONNECT_REQ1_IP_V6; l4kwqe2->op_code = L4_KWQE_OPCODE_VALUE_CONNECT2; l4kwqe2->flags = L4_KWQ_CONNECT_REQ2_LINKED_WITH_NEXT | L4_LAYER_CODE << L4_KWQ_CONNECT_REQ2_LAYER_CODE_SHIFT; l4kwqe2->src_ip_v6_2 = be32_to_cpu(csk->src_ip[1]); l4kwqe2->src_ip_v6_3 = be32_to_cpu(csk->src_ip[2]); l4kwqe2->src_ip_v6_4 = be32_to_cpu(csk->src_ip[3]); l4kwqe2->dst_ip_v6_2 = be32_to_cpu(csk->dst_ip[1]); l4kwqe2->dst_ip_v6_3 = be32_to_cpu(csk->dst_ip[2]); l4kwqe2->dst_ip_v6_4 = be32_to_cpu(csk->dst_ip[3]); l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct ipv6hdr) - sizeof(struct tcphdr); } else { wqes[1] = (struct kwqe *) l4kwqe3; l4kwqe3->mss = l4kwqe3->pmtu - sizeof(struct iphdr) - sizeof(struct tcphdr); } l4kwqe1->op_code = L4_KWQE_OPCODE_VALUE_CONNECT1; l4kwqe1->flags = (L4_LAYER_CODE << L4_KWQ_CONNECT_REQ1_LAYER_CODE_SHIFT) | L4_KWQ_CONNECT_REQ3_LINKED_WITH_NEXT; l4kwqe1->cid = csk->cid; l4kwqe1->pg_cid = csk->pg_cid; l4kwqe1->src_ip = be32_to_cpu(csk->src_ip[0]); l4kwqe1->dst_ip = be32_to_cpu(csk->dst_ip[0]); l4kwqe1->src_port = be16_to_cpu(csk->src_port); l4kwqe1->dst_port = be16_to_cpu(csk->dst_port); if (csk->tcp_flags & SK_TCP_NO_DELAY_ACK) tcp_flags |= L4_KWQ_CONNECT_REQ1_NO_DELAY_ACK; if (csk->tcp_flags & SK_TCP_KEEP_ALIVE) tcp_flags |= L4_KWQ_CONNECT_REQ1_KEEP_ALIVE; if (csk->tcp_flags & SK_TCP_NAGLE) tcp_flags |= L4_KWQ_CONNECT_REQ1_NAGLE_ENABLE; if (csk->tcp_flags & SK_TCP_TIMESTAMP) tcp_flags |= L4_KWQ_CONNECT_REQ1_TIME_STAMP; if (csk->tcp_flags & SK_TCP_SACK) tcp_flags |= L4_KWQ_CONNECT_REQ1_SACK; if (csk->tcp_flags & SK_TCP_SEG_SCALING) tcp_flags |= L4_KWQ_CONNECT_REQ1_SEG_SCALING; l4kwqe1->tcp_flags = tcp_flags; return dev->submit_kwqes(dev, wqes, num_wqes); } static int cnic_cm_close_req(struct cnic_sock *csk) { struct cnic_dev *dev = csk->dev; struct l4_kwq_close_req *l4kwqe; struct kwqe *wqes[1]; l4kwqe = (struct l4_kwq_close_req *) &csk->kwqe2; memset(l4kwqe, 0, sizeof(*l4kwqe)); wqes[0] = (struct kwqe *) l4kwqe; l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_CLOSE; l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_CLOSE_REQ_LAYER_CODE_SHIFT; l4kwqe->cid = csk->cid; return dev->submit_kwqes(dev, wqes, 1); } static int cnic_cm_abort_req(struct cnic_sock *csk) { struct cnic_dev *dev = csk->dev; struct l4_kwq_reset_req *l4kwqe; struct kwqe *wqes[1]; l4kwqe = (struct l4_kwq_reset_req *) &csk->kwqe2; memset(l4kwqe, 0, sizeof(*l4kwqe)); wqes[0] = (struct kwqe *) l4kwqe; l4kwqe->op_code = L4_KWQE_OPCODE_VALUE_RESET; l4kwqe->flags = L4_LAYER_CODE << L4_KWQ_RESET_REQ_LAYER_CODE_SHIFT; l4kwqe->cid = csk->cid; return dev->submit_kwqes(dev, wqes, 1); } static int cnic_cm_create(struct cnic_dev *dev, int ulp_type, u32 cid, u32 l5_cid, struct cnic_sock **csk, void *context) { struct cnic_local *cp = dev->cnic_priv; struct cnic_sock *csk1; if (l5_cid >= MAX_CM_SK_TBL_SZ) return -EINVAL; if (cp->ctx_tbl) { struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; if (test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags)) return -EAGAIN; } csk1 = &cp->csk_tbl[l5_cid]; if (atomic_read(&csk1->ref_count)) return -EAGAIN; if (test_and_set_bit(SK_F_INUSE, &csk1->flags)) return -EBUSY; csk1->dev = dev; csk1->cid = cid; csk1->l5_cid = l5_cid; csk1->ulp_type = ulp_type; csk1->context = context; csk1->ka_timeout = DEF_KA_TIMEOUT; csk1->ka_interval = DEF_KA_INTERVAL; csk1->ka_max_probe_count = DEF_KA_MAX_PROBE_COUNT; csk1->tos = DEF_TOS; csk1->ttl = DEF_TTL; csk1->snd_seq_scale = DEF_SND_SEQ_SCALE; csk1->rcv_buf = DEF_RCV_BUF; csk1->snd_buf = DEF_SND_BUF; csk1->seed = DEF_SEED; csk1->tcp_flags = 0; *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, be16_to_cpu(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_atomic(); 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 (is_vlan_dev(dev)) { *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 rtable *rt; rt = ip_route_output(&init_net, dst_addr->sin_addr.s_addr, 0, 0, 0); if (!IS_ERR(rt)) { *dst = &rt->dst; return 0; } return PTR_ERR(rt); #else return -ENETUNREACH; #endif } static int cnic_get_v6_route(struct sockaddr_in6 *dst_addr, struct dst_entry **dst) { #if IS_ENABLED(CONFIG_IPV6) struct flowi6 fl6; memset(&fl6, 0, sizeof(fl6)); fl6.daddr = dst_addr->sin6_addr; if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL) fl6.flowi6_oif = dst_addr->sin6_scope_id; *dst = ip6_route_output(&init_net, NULL, &fl6); if ((*dst)->error) { dst_release(*dst); *dst = NULL; return -ENETUNREACH; } else return 0; #endif return -ENETUNREACH; } static struct cnic_dev *cnic_cm_select_dev(struct sockaddr_in *dst_addr, int ulp_type) { struct cnic_dev *dev = NULL; struct dst_entry *dst; struct net_device *netdev = NULL; int err = -ENETUNREACH; if (dst_addr->sin_family == AF_INET) err = cnic_get_v4_route(dst_addr, &dst); else if (dst_addr->sin_family == AF_INET6) { struct sockaddr_in6 *dst_addr6 = (struct sockaddr_in6 *) dst_addr; err = cnic_get_v6_route(dst_addr6, &dst); } else return NULL; if (err) return NULL; if (!dst->dev) goto done; cnic_get_vlan(dst->dev, &netdev); dev = cnic_from_netdev(netdev); done: dst_release(dst); if (dev) cnic_put(dev); return dev; } static int cnic_resolve_addr(struct cnic_sock *csk, struct cnic_sockaddr *saddr) { struct cnic_dev *dev = csk->dev; struct cnic_local *cp = dev->cnic_priv; return cnic_send_nlmsg(cp, ISCSI_KEVENT_PATH_REQ, csk); } static int cnic_get_route(struct cnic_sock *csk, struct cnic_sockaddr *saddr) { struct cnic_dev *dev = csk->dev; struct cnic_local *cp = dev->cnic_priv; int is_v6, rc = 0; struct dst_entry *dst = NULL; struct net_device *realdev; __be16 local_port; u32 port_id; if (saddr->local.v6.sin6_family == AF_INET6 && saddr->remote.v6.sin6_family == AF_INET6) is_v6 = 1; else if (saddr->local.v4.sin_family == AF_INET && saddr->remote.v4.sin_family == AF_INET) is_v6 = 0; else return -EINVAL; clear_bit(SK_F_IPV6, &csk->flags); if (is_v6) { set_bit(SK_F_IPV6, &csk->flags); cnic_get_v6_route(&saddr->remote.v6, &dst); memcpy(&csk->dst_ip[0], &saddr->remote.v6.sin6_addr, sizeof(struct in6_addr)); csk->dst_port = saddr->remote.v6.sin6_port; local_port = saddr->local.v6.sin6_port; } else { cnic_get_v4_route(&saddr->remote.v4, &dst); csk->dst_ip[0] = saddr->remote.v4.sin_addr.s_addr; csk->dst_port = saddr->remote.v4.sin_port; local_port = saddr->local.v4.sin_port; } csk->vlan_id = 0; csk->mtu = dev->netdev->mtu; if (dst && dst->dev) { u16 vlan = cnic_get_vlan(dst->dev, &realdev); if (realdev == dev->netdev) { csk->vlan_id = vlan; csk->mtu = dst_mtu(dst); } } port_id = be16_to_cpu(local_port); if (port_id >= CNIC_LOCAL_PORT_MIN && port_id < CNIC_LOCAL_PORT_MAX) { if (cnic_alloc_id(&cp->csk_port_tbl, port_id)) port_id = 0; } else port_id = 0; if (!port_id) { port_id = cnic_alloc_new_id(&cp->csk_port_tbl); if (port_id == -1) { rc = -ENOMEM; goto err_out; } local_port = cpu_to_be16(port_id); } csk->src_port = local_port; err_out: dst_release(dst); return rc; } static void cnic_init_csk_state(struct cnic_sock *csk) { csk->state = 0; clear_bit(SK_F_OFFLD_SCHED, &csk->flags); clear_bit(SK_F_CLOSING, &csk->flags); } static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr) { struct cnic_local *cp = csk->dev->cnic_priv; int err = 0; if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI) return -EOPNOTSUPP; if (!cnic_in_use(csk)) return -EINVAL; if (test_and_set_bit(SK_F_CONNECT_START, &csk->flags)) return -EINVAL; cnic_init_csk_state(csk); err = cnic_get_route(csk, saddr); if (err) goto err_out; err = cnic_resolve_addr(csk, saddr); if (!err) return 0; err_out: clear_bit(SK_F_CONNECT_START, &csk->flags); return err; } static int cnic_cm_abort(struct cnic_sock *csk) { struct cnic_local *cp = csk->dev->cnic_priv; u32 opcode = L4_KCQE_OPCODE_VALUE_RESET_COMP; if (!cnic_in_use(csk)) return -EINVAL; if (cnic_abort_prep(csk)) return cnic_cm_abort_req(csk); /* Getting here means that we haven't started connect, or * connect was not successful, or it has been reset by the target. */ cp->close_conn(csk, opcode); if (csk->state != opcode) { /* Wait for remote reset sequence to complete */ while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) msleep(1); return -EALREADY; } return 0; } static int cnic_cm_close(struct cnic_sock *csk) { if (!cnic_in_use(csk)) return -EINVAL; if (cnic_close_prep(csk)) { csk->state = L4_KCQE_OPCODE_VALUE_CLOSE_COMP; return cnic_cm_close_req(csk); } else { /* Wait for remote reset sequence to complete */ while (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) msleep(1); return -EALREADY; } return 0; } static void cnic_cm_upcall(struct cnic_local *cp, struct cnic_sock *csk, u8 opcode) { struct cnic_ulp_ops *ulp_ops; int ulp_type = csk->ulp_type; rcu_read_lock(); ulp_ops = rcu_dereference(cp->ulp_ops[ulp_type]); if (ulp_ops) { if (opcode == L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE) ulp_ops->cm_connect_complete(csk); else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) ulp_ops->cm_close_complete(csk); else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) ulp_ops->cm_remote_abort(csk); else if (opcode == L4_KCQE_OPCODE_VALUE_RESET_COMP) ulp_ops->cm_abort_complete(csk); else if (opcode == L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED) ulp_ops->cm_remote_close(csk); } rcu_read_unlock(); } static int cnic_cm_set_pg(struct cnic_sock *csk) { if (cnic_offld_prep(csk)) { if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) cnic_cm_update_pg(csk); else cnic_cm_offload_pg(csk); } return 0; } static void cnic_cm_process_offld_pg(struct cnic_dev *dev, struct l4_kcq *kcqe) { struct cnic_local *cp = dev->cnic_priv; u32 l5_cid = kcqe->pg_host_opaque; u8 opcode = kcqe->op_code; struct cnic_sock *csk = &cp->csk_tbl[l5_cid]; csk_hold(csk); if (!cnic_in_use(csk)) goto done; if (opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { clear_bit(SK_F_OFFLD_SCHED, &csk->flags); goto done; } /* Possible PG kcqe status: SUCCESS, OFFLOADED_PG, or CTX_ALLOC_FAIL */ if (kcqe->status == L4_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAIL) { clear_bit(SK_F_OFFLD_SCHED, &csk->flags); cnic_cm_upcall(cp, csk, L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE); goto done; } csk->pg_cid = kcqe->pg_cid; set_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags); cnic_cm_conn_req(csk); done: csk_put(csk); } static void cnic_process_fcoe_term_conn(struct cnic_dev *dev, struct kcqe *kcqe) { struct cnic_local *cp = dev->cnic_priv; struct fcoe_kcqe *fc_kcqe = (struct fcoe_kcqe *) kcqe; u32 l5_cid = fc_kcqe->fcoe_conn_id + BNX2X_FCOE_L5_CID_BASE; struct cnic_context *ctx = &cp->ctx_tbl[l5_cid]; ctx->timestamp = jiffies; ctx->wait_cond = 1; wake_up(&ctx->waitq); } 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 == FCOE_RAMROD_CMD_ID_TERMINATE_CONN) { cnic_process_fcoe_term_conn(dev, kcqe); return; } if (opcode == L4_KCQE_OPCODE_VALUE_OFFLOAD_PG || opcode == L4_KCQE_OPCODE_VALUE_UPDATE_PG) { cnic_cm_process_offld_pg(dev, l4kcqe); return; } l5_cid = l4kcqe->conn_id; if (opcode & 0x80) l5_cid = l4kcqe->cid; if (l5_cid >= MAX_CM_SK_TBL_SZ) return; csk = &cp->csk_tbl[l5_cid]; csk_hold(csk); if (!cnic_in_use(csk)) { csk_put(csk); return; } switch (opcode) { case L5CM_RAMROD_CMD_ID_TCP_CONNECT: if (l4kcqe->status != 0) { clear_bit(SK_F_OFFLD_SCHED, &csk->flags); cnic_cm_upcall(cp, csk, L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE); } break; case L4_KCQE_OPCODE_VALUE_CONNECT_COMPLETE: if (l4kcqe->status == 0) set_bit(SK_F_OFFLD_COMPLETE, &csk->flags); else if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR) set_bit(SK_F_HW_ERR, &csk->flags); smp_mb__before_atomic(); clear_bit(SK_F_OFFLD_SCHED, &csk->flags); cnic_cm_upcall(cp, csk, opcode); break; case L5CM_RAMROD_CMD_ID_CLOSE: { struct iscsi_kcqe *l5kcqe = (struct iscsi_kcqe *) kcqe; if (l4kcqe->status == 0 && l5kcqe->completion_status == 0) break; netdev_warn(dev->netdev, "RAMROD CLOSE compl with status 0x%x completion status 0x%x\n", l4kcqe->status, l5kcqe->completion_status); opcode = L4_KCQE_OPCODE_VALUE_CLOSE_COMP; } /* Fall through */ case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED: case L4_KCQE_OPCODE_VALUE_CLOSE_COMP: case L4_KCQE_OPCODE_VALUE_RESET_COMP: case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE: case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD: if (l4kcqe->status == L4_KCQE_COMPLETION_STATUS_PARITY_ERROR) set_bit(SK_F_HW_ERR, &csk->flags); cp->close_conn(csk, opcode); break; case L4_KCQE_OPCODE_VALUE_CLOSE_RECEIVED: /* after we already sent CLOSE_REQ */ if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags) && !test_bit(SK_F_OFFLD_COMPLETE, &csk->flags) && csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP) cp->close_conn(csk, L4_KCQE_OPCODE_VALUE_RESET_COMP); else 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; kvfree(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; u32 port_id; int i; cp->csk_tbl = kvcalloc(MAX_CM_SK_TBL_SZ, sizeof(struct cnic_sock), GFP_KERNEL); if (!cp->csk_tbl) return -ENOMEM; for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) atomic_set(&cp->csk_tbl[i].ref_count, 0); port_id = prandom_u32(); port_id %= CNIC_LOCAL_PORT_RANGE; if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE, CNIC_LOCAL_PORT_MIN, port_id)) { cnic_cm_free_mem(dev); return -ENOMEM; } return 0; } static int cnic_ready_to_close(struct cnic_sock *csk, u32 opcode) { if (test_and_clear_bit(SK_F_OFFLD_COMPLETE, &csk->flags)) { /* Unsolicited RESET_COMP or RESET_RECEIVED */ opcode = L4_KCQE_OPCODE_VALUE_RESET_RECEIVED; csk->state = opcode; } /* 1. If event opcode matches the expected event in csk->state * 2. If the expected event is CLOSE_COMP or RESET_COMP, we accept any * event * 3. If the expected event is 0, meaning the connection was never * never established, we accept the opcode from cm_abort. */ if (opcode == csk->state || csk->state == 0 || csk->state == L4_KCQE_OPCODE_VALUE_CLOSE_COMP || csk->state == L4_KCQE_OPCODE_VALUE_RESET_COMP) { if (!test_and_set_bit(SK_F_CLOSING, &csk->flags)) { if (csk->state == 0) csk->state = opcode; return 1; } } return 0; } static void cnic_close_bnx2_conn(struct cnic_sock *csk, u32 opcode) { struct cnic_dev *dev = csk->dev; struct cnic_local *cp = dev->cnic_priv; if (opcode == L4_KCQE_OPCODE_VALUE_RESET_RECEIVED) { cnic_cm_upcall(cp, csk, opcode); return; } clear_bit(SK_F_CONNECT_START, &csk->flags); cnic_close_conn(csk); csk->state = opcode; cnic_cm_upcall(cp, csk, opcode); } static void cnic_cm_stop_bnx2_hw(struct cnic_dev *dev) { } static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev) { u32 seed; seed = prandom_u32(); cnic_ctx_wr(dev, 45, 0, seed); return 0; } static void cnic_close_bnx2x_conn(struct cnic_sock *csk, u32 opcode) { struct cnic_dev *dev = csk->dev; struct cnic_local *cp = dev->cnic_priv; struct cnic_context *ctx = &cp->ctx_tbl[csk->l5_cid]; union l5cm_specific_data l5_data; u32 cmd = 0; int close_complete = 0; switch (opcode) { case L4_KCQE_OPCODE_VALUE_RESET_RECEIVED: case L4_KCQE_OPCODE_VALUE_CLOSE_COMP: case L4_KCQE_OPCODE_VALUE_RESET_COMP: if (cnic_ready_to_close(csk, opcode)) { if (test_bit(SK_F_HW_ERR, &csk->flags)) close_complete = 1; else if (test_bit(SK_F_PG_OFFLD_COMPLETE, &csk->flags)) cmd = L5CM_RAMROD_CMD_ID_SEARCHER_DELETE; else close_complete = 1; } break; case L5CM_RAMROD_CMD_ID_SEARCHER_DELETE: cmd = L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD; break; case L5CM_RAMROD_CMD_ID_TERMINATE_OFFLOAD: close_complete = 1; break; } if (cmd) { memset(&l5_data, 0, sizeof(l5_data)); cnic_submit_kwqe_16(dev, cmd, csk->cid, ISCSI_CONNECTION_TYPE, &l5_data); } else if (close_complete) { ctx->timestamp = jiffies; cnic_close_conn(csk); cnic_cm_upcall(cp, csk, csk->state); } } static void cnic_cm_stop_bnx2x_hw(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; if (!cp->ctx_tbl) return; if (!netif_running(dev->netdev)) return; cnic_bnx2x_delete_wait(dev, 0); cancel_delayed_work(&cp->delete_task); flush_workqueue(cnic_wq); if (atomic_read(&cp->iscsi_conn) != 0) netdev_warn(dev->netdev, "%d iSCSI connections not destroyed\n", atomic_read(&cp->iscsi_conn)); } static int cnic_cm_init_bnx2x_hw(struct cnic_dev *dev) { struct bnx2x *bp = netdev_priv(dev->netdev); u32 pfid = bp->pfid; u32 port = BP_PORT(bp); cnic_init_bnx2x_mac(dev); cnic_bnx2x_set_tcp_options(dev, 0, 1); CNIC_WR16(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_LOCAL_VLAN_OFFSET(pfid), 0); CNIC_WR(dev, BAR_XSTRORM_INTMEM + XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_ENABLED_OFFSET(port), 1); CNIC_WR(dev, BAR_XSTRORM_INTMEM + XSTORM_TCP_GLOBAL_DEL_ACK_COUNTER_MAX_COUNT_OFFSET(port), DEF_MAX_DA_COUNT); CNIC_WR8(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_TCP_VARS_TTL_OFFSET(pfid), DEF_TTL); CNIC_WR8(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_TCP_VARS_TOS_OFFSET(pfid), DEF_TOS); CNIC_WR8(dev, BAR_XSTRORM_INTMEM + XSTORM_ISCSI_TCP_VARS_ADV_WND_SCL_OFFSET(pfid), 2); CNIC_WR(dev, BAR_XSTRORM_INTMEM + XSTORM_TCP_TX_SWS_TIMER_VAL_OFFSET(pfid), DEF_SWS_TIMER); CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_TCP_MAX_CWND_OFFSET(pfid), DEF_MAX_CWND); return 0; } static void cnic_delete_task(struct work_struct *work) { struct cnic_local *cp; struct cnic_dev *dev; u32 i; int need_resched = 0; cp = container_of(work, struct cnic_local, delete_task.work); dev = cp->dev; if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) { struct drv_ctl_info info; cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI); memset(&info, 0, sizeof(struct drv_ctl_info)); info.cmd = DRV_CTL_ISCSI_STOPPED_CMD; cp->ethdev->drv_ctl(dev->netdev, &info); } for (i = 0; i < cp->max_cid_space; i++) { struct cnic_context *ctx = &cp->ctx_tbl[i]; int err; if (!test_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags) || !test_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags)) continue; if (!time_after(jiffies, ctx->timestamp + (2 * HZ))) { need_resched = 1; continue; } if (!test_and_clear_bit(CTX_FL_DELETE_WAIT, &ctx->ctx_flags)) continue; err = cnic_bnx2x_destroy_ramrod(dev, i); cnic_free_bnx2x_conn_resc(dev, i); if (!err) { if (ctx->ulp_proto_id == CNIC_ULP_ISCSI) atomic_dec(&cp->iscsi_conn); clear_bit(CTX_FL_OFFLD_START, &ctx->ctx_flags); } } if (need_resched) queue_delayed_work(cnic_wq, &cp->delete_task, msecs_to_jiffies(10)); } static int cnic_cm_open(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; int err; err = cnic_cm_alloc_mem(dev); if (err) return err; err = cp->start_cm(dev); if (err) goto err_out; INIT_DELAYED_WORK(&cp->delete_task, cnic_delete_task); dev->cm_create = cnic_cm_create; dev->cm_destroy = cnic_cm_destroy; dev->cm_connect = cnic_cm_connect; dev->cm_abort = cnic_cm_abort; dev->cm_close = cnic_cm_close; dev->cm_select_dev = cnic_cm_select_dev; cp->ulp_handle[CNIC_ULP_L4] = dev; rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], &cm_ulp_ops); return 0; err_out: cnic_cm_free_mem(dev); return err; } static int cnic_cm_shutdown(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; int i; if (!cp->csk_tbl) return 0; for (i = 0; i < MAX_CM_SK_TBL_SZ; i++) { struct cnic_sock *csk = &cp->csk_tbl[i]; clear_bit(SK_F_INUSE, &csk->flags); cnic_cm_cleanup(csk); } cnic_cm_free_mem(dev); return 0; } static void cnic_init_context(struct cnic_dev *dev, u32 cid) { u32 cid_addr; int i; cid_addr = GET_CID_ADDR(cid); for (i = 0; i < CTX_SIZE; i += 4) cnic_ctx_wr(dev, cid_addr, i, 0); } static int cnic_setup_5709_context(struct cnic_dev *dev, int valid) { struct cnic_local *cp = dev->cnic_priv; int ret = 0, i; u32 valid_bit = valid ? BNX2_CTX_HOST_PAGE_TBL_DATA0_VALID : 0; if (BNX2_CHIP(cp) != BNX2_CHIP_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, CNIC_PAGE_SIZE); CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA0, (cp->ctx_arr[i].mapping & 0xffffffff) | valid_bit); CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_DATA1, (u64) cp->ctx_arr[i].mapping >> 32); CNIC_WR(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL, idx | BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ); for (j = 0; j < 10; j++) { val = CNIC_RD(dev, BNX2_CTX_HOST_PAGE_TBL_CTRL); if (!(val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ)) break; udelay(5); } if (val & BNX2_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) { ret = -EBUSY; break; } } return ret; } static void cnic_free_irq(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { cp->disable_int_sync(dev); tasklet_kill(&cp->cnic_irq_task); free_irq(ethdev->irq_arr[0].vector, dev); } } static int cnic_request_irq(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; int err; err = request_irq(ethdev->irq_arr[0].vector, cnic_irq, 0, "cnic", dev); if (err) tasklet_disable(&cp->cnic_irq_task); return err; } static int cnic_init_bnx2_irq(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { int err, i = 0; int sblk_num = cp->status_blk_num; u32 base = ((sblk_num - 1) * BNX2_HC_SB_CONFIG_SIZE) + BNX2_HC_SB_CONFIG_1; CNIC_WR(dev, base, BNX2_HC_SB_CONFIG_1_ONE_SHOT); CNIC_WR(dev, base + BNX2_HC_COMP_PROD_TRIP_OFF, (2 << 16) | 8); CNIC_WR(dev, base + BNX2_HC_COM_TICKS_OFF, (64 << 16) | 220); CNIC_WR(dev, base + BNX2_HC_CMD_TICKS_OFF, (64 << 16) | 220); cp->last_status_idx = cp->status_blk.bnx2->status_idx; tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2_msix, (unsigned long) dev); err = cnic_request_irq(dev); if (err) return err; while (cp->status_blk.bnx2->status_completion_producer_index && i < 10) { CNIC_WR(dev, BNX2_HC_COALESCE_NOW, 1 << (11 + sblk_num)); udelay(10); i++; barrier(); } if (cp->status_blk.bnx2->status_completion_producer_index) { cnic_free_irq(dev); goto failed; } } else { struct status_block *sblk = cp->status_blk.gen; u32 hc_cmd = CNIC_RD(dev, BNX2_HC_COMMAND); int i = 0; while (sblk->status_completion_producer_index && i < 10) { CNIC_WR(dev, BNX2_HC_COMMAND, hc_cmd | BNX2_HC_COMMAND_COAL_NOW_WO_INT); udelay(10); i++; barrier(); } if (sblk->status_completion_producer_index) goto failed; } return 0; failed: netdev_err(dev->netdev, "KCQ index not resetting to 0\n"); return -EBUSY; } static void cnic_enable_bnx2_int(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) return; CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | BNX2_PCICFG_INT_ACK_CMD_INDEX_VALID | cp->last_status_idx); } static void cnic_disable_bnx2_int_sync(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; if (!(ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX)) return; CNIC_WR(dev, BNX2_PCICFG_INT_ACK_CMD, cp->int_num | BNX2_PCICFG_INT_ACK_CMD_MASK_INT); CNIC_RD(dev, BNX2_PCICFG_INT_ACK_CMD); synchronize_irq(ethdev->irq_arr[0].vector); } static void cnic_init_bnx2_tx_ring(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; struct cnic_uio_dev *udev = cp->udev; u32 cid_addr, tx_cid, sb_id; u32 val, offset0, offset1, offset2, offset3; int i; struct bnx2_tx_bd *txbd; dma_addr_t buf_map, ring_map = udev->l2_ring_map; struct status_block *s_blk = cp->status_blk.gen; sb_id = cp->status_blk_num; tx_cid = 20; cp->tx_cons_ptr = &s_blk->status_tx_quick_consumer_index2; if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { struct status_block_msix *sblk = cp->status_blk.bnx2; tx_cid = TX_TSS_CID + sb_id - 1; CNIC_WR(dev, BNX2_TSCH_TSS_CFG, (sb_id << 24) | (TX_TSS_CID << 7)); cp->tx_cons_ptr = &sblk->status_tx_quick_consumer_index; } cp->tx_cons = *cp->tx_cons_ptr; cid_addr = GET_CID_ADDR(tx_cid); if (BNX2_CHIP(cp) == BNX2_CHIP_5709) { u32 cid_addr2 = GET_CID_ADDR(tx_cid + 4) + 0x40; for (i = 0; i < PHY_CTX_SIZE; i += 4) cnic_ctx_wr(dev, cid_addr2, i, 0); offset0 = BNX2_L2CTX_TYPE_XI; offset1 = BNX2_L2CTX_CMD_TYPE_XI; offset2 = BNX2_L2CTX_TBDR_BHADDR_HI_XI; offset3 = BNX2_L2CTX_TBDR_BHADDR_LO_XI; } else { cnic_init_context(dev, tx_cid); cnic_init_context(dev, tx_cid + 1); offset0 = BNX2_L2CTX_TYPE; offset1 = BNX2_L2CTX_CMD_TYPE; offset2 = BNX2_L2CTX_TBDR_BHADDR_HI; offset3 = BNX2_L2CTX_TBDR_BHADDR_LO; } val = BNX2_L2CTX_TYPE_TYPE_L2 | BNX2_L2CTX_TYPE_SIZE_L2; cnic_ctx_wr(dev, cid_addr, offset0, val); val = BNX2_L2CTX_CMD_TYPE_TYPE_L2 | (8 << 16); cnic_ctx_wr(dev, cid_addr, offset1, val); txbd = udev->l2_ring; buf_map = udev->l2_buf_map; for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i++, txbd++) { txbd->tx_bd_haddr_hi = (u64) buf_map >> 32; txbd->tx_bd_haddr_lo = (u64) buf_map & 0xffffffff; } val = (u64) ring_map >> 32; cnic_ctx_wr(dev, cid_addr, offset2, val); txbd->tx_bd_haddr_hi = val; val = (u64) ring_map & 0xffffffff; cnic_ctx_wr(dev, cid_addr, offset3, val); txbd->tx_bd_haddr_lo = val; } static void cnic_init_bnx2_rx_ring(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; struct cnic_uio_dev *udev = cp->udev; u32 cid_addr, sb_id, val, coal_reg, coal_val; int i; struct bnx2_rx_bd *rxbd; struct status_block *s_blk = cp->status_blk.gen; dma_addr_t ring_map = udev->l2_ring_map; sb_id = cp->status_blk_num; cnic_init_context(dev, 2); cp->rx_cons_ptr = &s_blk->status_rx_quick_consumer_index2; coal_reg = BNX2_HC_COMMAND; coal_val = CNIC_RD(dev, coal_reg); if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { struct status_block_msix *sblk = cp->status_blk.bnx2; cp->rx_cons_ptr = &sblk->status_rx_quick_consumer_index; coal_reg = BNX2_HC_COALESCE_NOW; coal_val = 1 << (11 + sb_id); } i = 0; while (!(*cp->rx_cons_ptr != 0) && i < 10) { CNIC_WR(dev, coal_reg, coal_val); udelay(10); i++; barrier(); } cp->rx_cons = *cp->rx_cons_ptr; cid_addr = GET_CID_ADDR(2); val = BNX2_L2CTX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE | BNX2_L2CTX_CTX_TYPE_SIZE_L2 | (0x02 << 8); cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_CTX_TYPE, val); if (sb_id == 0) val = 2 << BNX2_L2CTX_L2_STATUSB_NUM_SHIFT; else val = BNX2_L2CTX_L2_STATUSB_NUM(sb_id); cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_HOST_BDIDX, val); rxbd = udev->l2_ring + CNIC_PAGE_SIZE; for (i = 0; i < BNX2_MAX_RX_DESC_CNT; i++, rxbd++) { dma_addr_t buf_map; int n = (i % cp->l2_rx_ring_size) + 1; buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size); rxbd->rx_bd_len = cp->l2_single_buf_size; rxbd->rx_bd_flags = RX_BD_FLAGS_START | RX_BD_FLAGS_END; rxbd->rx_bd_haddr_hi = (u64) buf_map >> 32; rxbd->rx_bd_haddr_lo = (u64) buf_map & 0xffffffff; } val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32; cnic_ctx_wr(dev, cid_addr, BNX2_L2CTX_NX_BDHADDR_HI, val); rxbd->rx_bd_haddr_hi = val; val = (u64) (ring_map + CNIC_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_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 (BNX2_CHIP(cp) != BNX2_CHIP_5709) val |= BNX2_RPM_SORT_USER2_PROM_VLAN; CNIC_WR(dev, BNX2_RPM_SORT_USER2, 0x0); CNIC_WR(dev, BNX2_RPM_SORT_USER2, val); CNIC_WR(dev, BNX2_RPM_SORT_USER2, val | BNX2_RPM_SORT_USER2_ENA); } static int cnic_start_bnx2_hw(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; struct status_block *sblk = cp->status_blk.gen; u32 val, kcq_cid_addr, kwq_cid_addr; int err; cnic_set_bnx2_mac(dev); val = CNIC_RD(dev, BNX2_MQ_CONFIG); val &= ~BNX2_MQ_CONFIG_KNL_BYP_BLK_SIZE; if (CNIC_PAGE_BITS > 12) val |= (12 - 8) << 4; else val |= (CNIC_PAGE_BITS - 8) << 4; CNIC_WR(dev, BNX2_MQ_CONFIG, val); CNIC_WR(dev, BNX2_HC_COMP_PROD_TRIP, (2 << 16) | 8); CNIC_WR(dev, BNX2_HC_COM_TICKS, (64 << 16) | 220); CNIC_WR(dev, BNX2_HC_CMD_TICKS, (64 << 16) | 220); err = cnic_setup_5709_context(dev, 1); if (err) return err; cnic_init_context(dev, KWQ_CID); cnic_init_context(dev, KCQ_CID); kwq_cid_addr = GET_CID_ADDR(KWQ_CID); cp->kwq_io_addr = MB_GET_CID_ADDR(KWQ_CID) + L5_KRNLQ_HOST_QIDX; cp->max_kwq_idx = MAX_KWQ_IDX; cp->kwq_prod_idx = 0; cp->kwq_con_idx = 0; set_bit(CNIC_LCL_FL_KWQ_INIT, &cp->cnic_local_flags); if (BNX2_CHIP(cp) == BNX2_CHIP_5706 || BNX2_CHIP(cp) == BNX2_CHIP_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 | (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_TYPE, val); val = (CNIC_PAGE_SIZE / sizeof(struct kwqe) - 1) << 16; cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); val = ((CNIC_PAGE_SIZE / sizeof(struct kwqe)) << 16) | KWQ_PAGE_CNT; cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); val = (u32) ((u64) cp->kwq_info.pgtbl_map >> 32); cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); val = (u32) cp->kwq_info.pgtbl_map; cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); kcq_cid_addr = GET_CID_ADDR(KCQ_CID); cp->kcq1.io_addr = MB_GET_CID_ADDR(KCQ_CID) + L5_KRNLQ_HOST_QIDX; cp->kcq1.sw_prod_idx = 0; cp->kcq1.hw_prod_idx_ptr = &sblk->status_completion_producer_index; cp->kcq1.status_idx_ptr = &sblk->status_idx; /* Initialize the kernel complete queue context. */ val = KRNLQ_TYPE_TYPE_KRNLQ | KRNLQ_SIZE_TYPE_SIZE | (CNIC_PAGE_BITS - 8) | KRNLQ_FLAGS_QE_SELF_SEQ; cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_TYPE, val); val = (CNIC_PAGE_SIZE / sizeof(struct kcqe) - 1) << 16; cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_QE_SELF_SEQ_MAX, val); val = ((CNIC_PAGE_SIZE / sizeof(struct kcqe)) << 16) | KCQ_PAGE_CNT; cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_NPAGES, val); val = (u32) ((u64) cp->kcq1.dma.pgtbl_map >> 32); cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_HI, val); val = (u32) cp->kcq1.dma.pgtbl_map; cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_PGTBL_HADDR_LO, val); cp->int_num = 0; if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) { struct status_block_msix *msblk = cp->status_blk.bnx2; u32 sb_id = cp->status_blk_num; u32 sb = BNX2_L2CTX_L5_STATUSB_NUM(sb_id); cp->kcq1.hw_prod_idx_ptr = &msblk->status_completion_producer_index; cp->kcq1.status_idx_ptr = &msblk->status_idx; cp->kwq_con_idx_ptr = &msblk->status_cmd_consumer_index; cp->int_num = sb_id << BNX2_PCICFG_INT_ACK_CMD_INT_NUM_SHIFT; cnic_ctx_wr(dev, kwq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); cnic_ctx_wr(dev, kcq_cid_addr, L5_KRNLQ_HOST_QIDX, sb); } /* Enable Commnad Scheduler notification when we write to the * host producer index of the kernel contexts. */ CNIC_WR(dev, BNX2_MQ_KNL_CMD_MASK1, 2); /* Enable Command Scheduler notification when we write to either * the Send Queue or Receive Queue producer indexes of the kernel * bypass contexts. */ CNIC_WR(dev, BNX2_MQ_KNL_BYP_CMD_MASK1, 7); CNIC_WR(dev, BNX2_MQ_KNL_BYP_WRITE_MASK1, 7); /* Notify COM when the driver post an application buffer. */ CNIC_WR(dev, BNX2_MQ_KNL_RX_V2P_MASK2, 0x2000); /* Set the CP and COM doorbells. These two processors polls the * doorbell for a non zero value before running. This must be done * after setting up the kernel queue contexts. */ cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 1); cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 1); cnic_init_bnx2_tx_ring(dev); cnic_init_bnx2_rx_ring(dev); err = cnic_init_bnx2_irq(dev); if (err) { netdev_err(dev->netdev, "cnic_init_irq failed\n"); cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); return err; } ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ; return 0; } static void cnic_setup_bnx2x_context(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; u32 start_offset = ethdev->ctx_tbl_offset; int i; for (i = 0; i < cp->ctx_blks; i++) { struct cnic_ctx *ctx = &cp->ctx_arr[i]; dma_addr_t map = ctx->mapping; if (cp->ctx_align) { unsigned long mask = cp->ctx_align - 1; map = (map + mask) & ~mask; } cnic_ctx_tbl_wr(dev, start_offset + i, map); } } static int cnic_init_bnx2x_irq(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; int err = 0; tasklet_init(&cp->cnic_irq_task, cnic_service_bnx2x_bh, (unsigned long) dev); if (ethdev->drv_state & CNIC_DRV_STATE_USING_MSIX) err = cnic_request_irq(dev); return err; } static inline void cnic_storm_memset_hc_disable(struct cnic_dev *dev, u16 sb_id, u8 sb_index, u8 disable) { struct bnx2x *bp = netdev_priv(dev->netdev); u32 addr = BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) + offsetof(struct hc_status_block_data_e1x, index_data) + sizeof(struct hc_index_data)*sb_index + offsetof(struct hc_index_data, flags); u16 flags = CNIC_RD16(dev, addr); /* clear and set */ flags &= ~HC_INDEX_DATA_HC_ENABLED; flags |= (((~disable) << HC_INDEX_DATA_HC_ENABLED_SHIFT) & HC_INDEX_DATA_HC_ENABLED); CNIC_WR16(dev, addr, flags); } static void cnic_enable_bnx2x_int(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); u8 sb_id = cp->status_blk_num; CNIC_WR8(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_DATA_OFFSET(sb_id) + offsetof(struct hc_status_block_data_e1x, index_data) + sizeof(struct hc_index_data)*HC_INDEX_ISCSI_EQ_CONS + offsetof(struct hc_index_data, timeout), 64 / 4); cnic_storm_memset_hc_disable(dev, sb_id, HC_INDEX_ISCSI_EQ_CONS, 0); } static void cnic_disable_bnx2x_int_sync(struct cnic_dev *dev) { } static void cnic_init_bnx2x_tx_ring(struct cnic_dev *dev, struct client_init_ramrod_data *data) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct cnic_uio_dev *udev = cp->udev; union eth_tx_bd_types *txbd = (union eth_tx_bd_types *) udev->l2_ring; dma_addr_t buf_map, ring_map = udev->l2_ring_map; struct host_sp_status_block *sb = cp->bnx2x_def_status_blk; int i; u32 cli = cp->ethdev->iscsi_l2_client_id; u32 val; memset(txbd, 0, CNIC_PAGE_SIZE); buf_map = udev->l2_buf_map; for (i = 0; i < BNX2_MAX_TX_DESC_CNT; i += 3, txbd += 3) { struct eth_tx_start_bd *start_bd = &txbd->start_bd; struct eth_tx_parse_bd_e1x *pbd_e1x = &((txbd + 1)->parse_bd_e1x); struct eth_tx_parse_bd_e2 *pbd_e2 = &((txbd + 1)->parse_bd_e2); struct eth_tx_bd *reg_bd = &((txbd + 2)->reg_bd); start_bd->addr_hi = cpu_to_le32((u64) buf_map >> 32); start_bd->addr_lo = cpu_to_le32(buf_map & 0xffffffff); reg_bd->addr_hi = start_bd->addr_hi; reg_bd->addr_lo = start_bd->addr_lo + 0x10; start_bd->nbytes = cpu_to_le16(0x10); start_bd->nbd = cpu_to_le16(3); start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD; start_bd->general_data &= ~ETH_TX_START_BD_PARSE_NBDS; start_bd->general_data |= (1 << ETH_TX_START_BD_HDR_NBDS_SHIFT); if (BNX2X_CHIP_IS_E2_PLUS(bp)) pbd_e2->parsing_data = (UNICAST_ADDRESS << ETH_TX_PARSE_BD_E2_ETH_ADDR_TYPE_SHIFT); else pbd_e1x->global_data = (UNICAST_ADDRESS << ETH_TX_PARSE_BD_E1X_ETH_ADDR_TYPE_SHIFT); } val = (u64) ring_map >> 32; txbd->next_bd.addr_hi = cpu_to_le32(val); data->tx.tx_bd_page_base.hi = cpu_to_le32(val); val = (u64) ring_map & 0xffffffff; txbd->next_bd.addr_lo = cpu_to_le32(val); data->tx.tx_bd_page_base.lo = cpu_to_le32(val); /* Other ramrod params */ data->tx.tx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_CQ_CONS; data->tx.tx_status_block_id = BNX2X_DEF_SB_ID; /* reset xstorm per client statistics */ if (cli < MAX_STAT_COUNTER_ID) { data->general.statistics_zero_flg = 1; data->general.statistics_en_flg = 1; data->general.statistics_counter_id = cli; } cp->tx_cons_ptr = &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_CQ_CONS]; } static void cnic_init_bnx2x_rx_ring(struct cnic_dev *dev, struct client_init_ramrod_data *data) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct cnic_uio_dev *udev = cp->udev; struct eth_rx_bd *rxbd = (struct eth_rx_bd *) (udev->l2_ring + CNIC_PAGE_SIZE); struct eth_rx_cqe_next_page *rxcqe = (struct eth_rx_cqe_next_page *) (udev->l2_ring + (2 * CNIC_PAGE_SIZE)); struct host_sp_status_block *sb = cp->bnx2x_def_status_blk; int i; u32 cli = cp->ethdev->iscsi_l2_client_id; int cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli); u32 val; dma_addr_t ring_map = udev->l2_ring_map; /* General data */ data->general.client_id = cli; data->general.activate_flg = 1; data->general.sp_client_id = cli; data->general.mtu = cpu_to_le16(cp->l2_single_buf_size - 14); data->general.func_id = bp->pfid; for (i = 0; i < BNX2X_MAX_RX_DESC_CNT; i++, rxbd++) { dma_addr_t buf_map; int n = (i % cp->l2_rx_ring_size) + 1; buf_map = udev->l2_buf_map + (n * cp->l2_single_buf_size); rxbd->addr_hi = cpu_to_le32((u64) buf_map >> 32); rxbd->addr_lo = cpu_to_le32(buf_map & 0xffffffff); } val = (u64) (ring_map + CNIC_PAGE_SIZE) >> 32; rxbd->addr_hi = cpu_to_le32(val); data->rx.bd_page_base.hi = cpu_to_le32(val); val = (u64) (ring_map + CNIC_PAGE_SIZE) & 0xffffffff; rxbd->addr_lo = cpu_to_le32(val); data->rx.bd_page_base.lo = cpu_to_le32(val); rxcqe += BNX2X_MAX_RCQ_DESC_CNT; val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) >> 32; rxcqe->addr_hi = cpu_to_le32(val); data->rx.cqe_page_base.hi = cpu_to_le32(val); val = (u64) (ring_map + (2 * CNIC_PAGE_SIZE)) & 0xffffffff; rxcqe->addr_lo = cpu_to_le32(val); data->rx.cqe_page_base.lo = cpu_to_le32(val); /* Other ramrod params */ data->rx.client_qzone_id = cl_qzone_id; data->rx.rx_sb_index_number = HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS; data->rx.status_block_id = BNX2X_DEF_SB_ID; data->rx.cache_line_alignment_log_size = L1_CACHE_SHIFT; data->rx.max_bytes_on_bd = cpu_to_le16(cp->l2_single_buf_size); data->rx.outer_vlan_removal_enable_flg = 1; data->rx.silent_vlan_removal_flg = 1; data->rx.silent_vlan_value = 0; data->rx.silent_vlan_mask = 0xffff; cp->rx_cons_ptr = &sb->sp_sb.index_values[HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS]; cp->rx_cons = *cp->rx_cons_ptr; } static void cnic_init_bnx2x_kcq(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); u32 pfid = bp->pfid; cp->kcq1.io_addr = BAR_CSTRORM_INTMEM + CSTORM_ISCSI_EQ_PROD_OFFSET(pfid, 0); cp->kcq1.sw_prod_idx = 0; if (BNX2X_CHIP_IS_E2_PLUS(bp)) { struct host_hc_status_block_e2 *sb = cp->status_blk.gen; cp->kcq1.hw_prod_idx_ptr = &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS]; cp->kcq1.status_idx_ptr = &sb->sb.running_index[SM_RX_ID]; } else { struct host_hc_status_block_e1x *sb = cp->status_blk.gen; cp->kcq1.hw_prod_idx_ptr = &sb->sb.index_values[HC_INDEX_ISCSI_EQ_CONS]; cp->kcq1.status_idx_ptr = &sb->sb.running_index[SM_RX_ID]; } if (BNX2X_CHIP_IS_E2_PLUS(bp)) { struct host_hc_status_block_e2 *sb = cp->status_blk.gen; cp->kcq2.io_addr = BAR_USTRORM_INTMEM + USTORM_FCOE_EQ_PROD_OFFSET(pfid); cp->kcq2.sw_prod_idx = 0; cp->kcq2.hw_prod_idx_ptr = &sb->sb.index_values[HC_INDEX_FCOE_EQ_CONS]; cp->kcq2.status_idx_ptr = &sb->sb.running_index[SM_RX_ID]; } } static int cnic_start_bnx2x_hw(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct cnic_eth_dev *ethdev = cp->ethdev; int ret; u32 pfid; dev->stats_addr = ethdev->addr_drv_info_to_mcp; cp->func = bp->pf_num; pfid = bp->pfid; ret = cnic_init_id_tbl(&cp->cid_tbl, MAX_ISCSI_TBL_SZ, cp->iscsi_start_cid, 0); if (ret) return -ENOMEM; if (BNX2X_CHIP_IS_E2_PLUS(bp)) { ret = cnic_init_id_tbl(&cp->fcoe_cid_tbl, dev->max_fcoe_conn, cp->fcoe_start_cid, 0); if (ret) return -ENOMEM; } cp->bnx2x_igu_sb_id = ethdev->irq_arr[0].status_blk_num2; cnic_init_bnx2x_kcq(dev); /* Only 1 EQ */ CNIC_WR16(dev, cp->kcq1.io_addr, MAX_KCQ_IDX); CNIC_WR(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_EQ_CONS_OFFSET(pfid, 0), 0); CNIC_WR(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0), cp->kcq1.dma.pg_map_arr[1] & 0xffffffff); CNIC_WR(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_OFFSET(pfid, 0) + 4, (u64) cp->kcq1.dma.pg_map_arr[1] >> 32); CNIC_WR(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0), cp->kcq1.dma.pg_map_arr[0] & 0xffffffff); CNIC_WR(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_EQ_NEXT_EQE_ADDR_OFFSET(pfid, 0) + 4, (u64) cp->kcq1.dma.pg_map_arr[0] >> 32); CNIC_WR8(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_EQ_NEXT_PAGE_ADDR_VALID_OFFSET(pfid, 0), 1); CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_EQ_SB_NUM_OFFSET(pfid, 0), cp->status_blk_num); CNIC_WR8(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_EQ_SB_INDEX_OFFSET(pfid, 0), HC_INDEX_ISCSI_EQ_CONS); CNIC_WR(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid), cp->gbl_buf_info.pg_map_arr[0] & 0xffffffff); CNIC_WR(dev, BAR_USTRORM_INTMEM + USTORM_ISCSI_GLOBAL_BUF_PHYS_ADDR_OFFSET(pfid) + 4, (u64) cp->gbl_buf_info.pg_map_arr[0] >> 32); CNIC_WR(dev, BAR_TSTRORM_INTMEM + TSTORM_ISCSI_TCP_LOCAL_ADV_WND_OFFSET(pfid), DEF_RCV_BUF); cnic_setup_bnx2x_context(dev); ret = cnic_init_bnx2x_irq(dev); if (ret) return ret; ethdev->drv_state |= CNIC_DRV_STATE_HANDLES_IRQ; return 0; } static void cnic_init_rings(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); struct cnic_uio_dev *udev = cp->udev; if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags)) return; if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { cnic_init_bnx2_tx_ring(dev); cnic_init_bnx2_rx_ring(dev); set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags); } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { u32 cli = cp->ethdev->iscsi_l2_client_id; u32 cid = cp->ethdev->iscsi_l2_cid; u32 cl_qzone_id; struct client_init_ramrod_data *data; union l5cm_specific_data l5_data; struct ustorm_eth_rx_producers rx_prods = {0}; u32 off, i, *cid_ptr; rx_prods.bd_prod = 0; rx_prods.cqe_prod = BNX2X_MAX_RCQ_DESC_CNT; barrier(); cl_qzone_id = BNX2X_CL_QZONE_ID(bp, cli); off = BAR_USTRORM_INTMEM + (BNX2X_CHIP_IS_E2_PLUS(bp) ? USTORM_RX_PRODS_E2_OFFSET(cl_qzone_id) : USTORM_RX_PRODS_E1X_OFFSET(BP_PORT(bp), cli)); for (i = 0; i < sizeof(struct ustorm_eth_rx_producers) / 4; i++) CNIC_WR(dev, off + i * 4, ((u32 *) &rx_prods)[i]); set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags); data = udev->l2_buf; cid_ptr = udev->l2_buf + 12; memset(data, 0, sizeof(*data)); cnic_init_bnx2x_tx_ring(dev, data); cnic_init_bnx2x_rx_ring(dev, data); l5_data.phy_address.lo = udev->l2_buf_map & 0xffffffff; l5_data.phy_address.hi = (u64) udev->l2_buf_map >> 32; set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags); cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP, cid, ETH_CONNECTION_TYPE, &l5_data); i = 0; while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) && ++i < 10) msleep(1); if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags)) netdev_err(dev->netdev, "iSCSI CLIENT_SETUP did not complete\n"); cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1); cnic_ring_ctl(dev, cid, cli, 1); *cid_ptr = cid >> 4; *(cid_ptr + 1) = cid * bp->db_size; *(cid_ptr + 2) = UIO_USE_TX_DOORBELL; } } static void cnic_shutdown_rings(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_uio_dev *udev = cp->udev; void *rx_ring; if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags)) return; if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) { cnic_shutdown_bnx2_rx_ring(dev); } else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { u32 cli = cp->ethdev->iscsi_l2_client_id; u32 cid = cp->ethdev->iscsi_l2_cid; union l5cm_specific_data l5_data; int i; cnic_ring_ctl(dev, cid, cli, 0); set_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags); l5_data.phy_address.lo = cli; l5_data.phy_address.hi = 0; cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_HALT, cid, ETH_CONNECTION_TYPE, &l5_data); i = 0; while (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags) && ++i < 10) msleep(1); if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags)) netdev_err(dev->netdev, "iSCSI CLIENT_HALT did not complete\n"); cnic_spq_completion(dev, DRV_CTL_RET_L2_SPQ_CREDIT_CMD, 1); memset(&l5_data, 0, sizeof(l5_data)); cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_COMMON_CFC_DEL, cid, NONE_CONNECTION_TYPE, &l5_data); msleep(10); } clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags); rx_ring = udev->l2_ring + CNIC_PAGE_SIZE; memset(rx_ring, 0, CNIC_PAGE_SIZE); } static int cnic_register_netdev(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; int err; if (!ethdev) return -ENODEV; if (ethdev->drv_state & CNIC_DRV_STATE_REGD) return 0; err = ethdev->drv_register_cnic(dev->netdev, cp->cnic_ops, dev); if (err) netdev_err(dev->netdev, "register_cnic failed\n"); /* Read iSCSI config again. On some bnx2x device, iSCSI config * can change after firmware is downloaded. */ dev->max_iscsi_conn = ethdev->max_iscsi_conn; if (ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI) dev->max_iscsi_conn = 0; return err; } static void cnic_unregister_netdev(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; if (!ethdev) return; ethdev->drv_unregister_cnic(dev->netdev); } static int cnic_start_hw(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct cnic_eth_dev *ethdev = cp->ethdev; int err; if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) return -EALREADY; dev->regview = ethdev->io_base; pci_dev_get(dev->pcidev); cp->func = PCI_FUNC(dev->pcidev->devfn); cp->status_blk.gen = ethdev->irq_arr[0].status_blk; cp->status_blk_num = ethdev->irq_arr[0].status_blk_num; err = cp->alloc_resc(dev); if (err) { netdev_err(dev->netdev, "allocate resource failure\n"); goto err1; } err = cp->start_hw(dev); if (err) goto err1; err = cnic_cm_open(dev); if (err) goto err1; set_bit(CNIC_F_CNIC_UP, &dev->flags); cp->enable_int(dev); return 0; err1: if (ethdev->drv_state & CNIC_DRV_STATE_HANDLES_IRQ) cp->stop_hw(dev); else cp->free_resc(dev); pci_dev_put(dev->pcidev); return err; } static void cnic_stop_bnx2_hw(struct cnic_dev *dev) { cnic_disable_bnx2_int_sync(dev); cnic_reg_wr_ind(dev, BNX2_CP_SCRATCH + 0x20, 0); cnic_reg_wr_ind(dev, BNX2_COM_SCRATCH + 0x20, 0); cnic_init_context(dev, KWQ_CID); cnic_init_context(dev, KCQ_CID); cnic_setup_5709_context(dev, 0); cnic_free_irq(dev); cnic_free_resc(dev); } static void cnic_stop_bnx2x_hw(struct cnic_dev *dev) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); u32 hc_index = HC_INDEX_ISCSI_EQ_CONS; u32 sb_id = cp->status_blk_num; u32 idx_off, syn_off; cnic_free_irq(dev); if (BNX2X_CHIP_IS_E2_PLUS(bp)) { idx_off = offsetof(struct hc_status_block_e2, index_values) + (hc_index * sizeof(u16)); syn_off = CSTORM_HC_SYNC_LINE_INDEX_E2_OFFSET(hc_index, sb_id); } else { idx_off = offsetof(struct hc_status_block_e1x, index_values) + (hc_index * sizeof(u16)); syn_off = CSTORM_HC_SYNC_LINE_INDEX_E1X_OFFSET(hc_index, sb_id); } CNIC_WR16(dev, BAR_CSTRORM_INTMEM + syn_off, 0); CNIC_WR16(dev, BAR_CSTRORM_INTMEM + CSTORM_STATUS_BLOCK_OFFSET(sb_id) + idx_off, 0); *cp->kcq1.hw_prod_idx_ptr = 0; CNIC_WR(dev, BAR_CSTRORM_INTMEM + CSTORM_ISCSI_EQ_CONS_OFFSET(bp->pfid, 0), 0); CNIC_WR16(dev, cp->kcq1.io_addr, 0); cnic_free_resc(dev); } static void cnic_stop_hw(struct cnic_dev *dev) { if (test_bit(CNIC_F_CNIC_UP, &dev->flags)) { struct cnic_local *cp = dev->cnic_priv; int i = 0; /* Need to wait for the ring shutdown event to complete * before clearing the CNIC_UP flag. */ while (cp->udev && cp->udev->uio_dev != -1 && i < 15) { msleep(100); i++; } cnic_shutdown_rings(dev); cp->stop_cm(dev); cp->ethdev->drv_state &= ~CNIC_DRV_STATE_HANDLES_IRQ; clear_bit(CNIC_F_CNIC_UP, &dev->flags); RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL); synchronize_rcu(); cnic_cm_shutdown(dev); cp->stop_hw(dev); pci_dev_put(dev->pcidev); } } static void cnic_free_dev(struct cnic_dev *dev) { int i = 0; while ((atomic_read(&dev->ref_count) != 0) && i < 10) { msleep(100); i++; } if (atomic_read(&dev->ref_count) != 0) netdev_err(dev->netdev, "Failed waiting for ref count to go to zero\n"); netdev_info(dev->netdev, "Removed CNIC device\n"); dev_put(dev->netdev); kfree(dev); } static int cnic_get_fc_npiv_tbl(struct cnic_dev *dev, struct cnic_fc_npiv_tbl *npiv_tbl) { struct cnic_local *cp = dev->cnic_priv; struct bnx2x *bp = netdev_priv(dev->netdev); int ret; if (!test_bit(CNIC_F_CNIC_UP, &dev->flags)) return -EAGAIN; /* bnx2x is down */ if (!BNX2X_CHIP_IS_E2_PLUS(bp)) return -EINVAL; ret = cp->ethdev->drv_get_fc_npiv_tbl(dev->netdev, npiv_tbl); return ret; } 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) 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; cdev->get_fc_npiv_tbl = cnic_get_fc_npiv_tbl; atomic_set(&cdev->ref_count, 0); cp = cdev->cnic_priv; cp->dev = cdev; cp->l2_single_buf_size = 0x400; cp->l2_rx_ring_size = 3; spin_lock_init(&cp->cnic_ulp_lock); netdev_info(dev, "Added CNIC device\n"); return cdev; } static struct cnic_dev *init_bnx2_cnic(struct net_device *dev) { struct pci_dev *pdev; struct cnic_dev *cdev; struct cnic_local *cp; struct bnx2 *bp = netdev_priv(dev); struct cnic_eth_dev *ethdev = NULL; if (bp->cnic_probe) ethdev = (bp->cnic_probe)(dev); 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) && (pdev->revision < 0x10)) { pci_dev_put(pdev); goto cnic_err; } pci_dev_put(pdev); cdev = cnic_alloc_dev(dev, pdev); if (cdev == NULL) goto cnic_err; set_bit(CNIC_F_BNX2_CLASS, &cdev->flags); cdev->submit_kwqes = cnic_submit_bnx2_kwqes; cp = cdev->cnic_priv; cp->ethdev = ethdev; cdev->pcidev = pdev; cp->chip_id = ethdev->chip_id; cdev->max_iscsi_conn = ethdev->max_iscsi_conn; 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; return cdev; cnic_err: dev_put(dev); return NULL; } static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev) { struct pci_dev *pdev; struct cnic_dev *cdev; struct cnic_local *cp; struct bnx2x *bp = netdev_priv(dev); struct cnic_eth_dev *ethdev = NULL; if (bp->cnic_probe) ethdev = bp->cnic_probe(dev); if (!ethdev) return NULL; pdev = ethdev->pdev; if (!pdev) return NULL; dev_hold(dev); cdev = cnic_alloc_dev(dev, pdev); if (cdev == NULL) { dev_put(dev); return NULL; } set_bit(CNIC_F_BNX2X_CLASS, &cdev->flags); cdev->submit_kwqes = cnic_submit_bnx2x_kwqes; cp = cdev->cnic_priv; cp->ethdev = ethdev; cdev->pcidev = pdev; cp->chip_id = ethdev->chip_id; cdev->stats_addr = ethdev->addr_drv_info_to_mcp; if (!(ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)) cdev->max_iscsi_conn = ethdev->max_iscsi_conn; if (CNIC_SUPPORTS_FCOE(bp)) { cdev->max_fcoe_conn = ethdev->max_fcoe_conn; cdev->max_fcoe_exchanges = ethdev->max_fcoe_exchanges; } if (cdev->max_fcoe_conn > BNX2X_FCOE_NUM_CONNECTIONS) cdev->max_fcoe_conn = BNX2X_FCOE_NUM_CONNECTIONS; memcpy(cdev->mac_addr, ethdev->iscsi_mac, ETH_ALEN); cp->cnic_ops = &cnic_bnx2x_ops; cp->start_hw = cnic_start_bnx2x_hw; cp->stop_hw = cnic_stop_bnx2x_hw; cp->setup_pgtbl = cnic_setup_page_tbl_le; cp->alloc_resc = cnic_alloc_bnx2x_resc; cp->free_resc = cnic_free_resc; cp->start_cm = cnic_cm_init_bnx2x_hw; cp->stop_cm = cnic_cm_stop_bnx2x_hw; cp->enable_int = cnic_enable_bnx2x_int; cp->disable_int_sync = cnic_disable_bnx2x_int_sync; if (BNX2X_CHIP_IS_E2_PLUS(bp)) { cp->ack_int = cnic_ack_bnx2x_e2_msix; cp->arm_int = cnic_arm_bnx2x_e2_msix; } else { cp->ack_int = cnic_ack_bnx2x_msix; cp->arm_int = cnic_arm_bnx2x_msix; } cp->close_conn = cnic_close_bnx2x_conn; return cdev; } static struct cnic_dev *is_cnic_dev(struct net_device *dev) { struct ethtool_drvinfo drvinfo; struct cnic_dev *cdev = NULL; if (dev->ethtool_ops && dev->ethtool_ops->get_drvinfo) { memset(&drvinfo, 0, sizeof(drvinfo)); dev->ethtool_ops->get_drvinfo(dev, &drvinfo); if (!strcmp(drvinfo.driver, "bnx2")) cdev = init_bnx2_cnic(dev); if (!strcmp(drvinfo.driver, "bnx2x")) cdev = init_bnx2x_cnic(dev); if (cdev) { write_lock(&cnic_dev_lock); list_add(&cdev->list, &cnic_dev_list); write_unlock(&cnic_dev_lock); } } return cdev; } static void cnic_rcv_netevent(struct cnic_local *cp, unsigned long event, u16 vlan_id) { int if_type; for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { struct cnic_ulp_ops *ulp_ops; void *ctx; mutex_lock(&cnic_lock); ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type], lockdep_is_held(&cnic_lock)); if (!ulp_ops || !ulp_ops->indicate_netevent) { mutex_unlock(&cnic_lock); continue; } ctx = cp->ulp_handle[if_type]; set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); mutex_unlock(&cnic_lock); ulp_ops->indicate_netevent(ctx, event, vlan_id); clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]); } } /* netdev event handler */ static int cnic_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *netdev = netdev_notifier_info_to_dev(ptr); struct cnic_dev *dev; int new_dev = 0; dev = cnic_from_netdev(netdev); if (!dev && event == NETDEV_REGISTER) { /* Check for the hot-plug device */ dev = is_cnic_dev(netdev); if (dev) { new_dev = 1; cnic_hold(dev); } } if (dev) { struct cnic_local *cp = dev->cnic_priv; if (new_dev) cnic_ulp_init(dev); else if (event == NETDEV_UNREGISTER) cnic_ulp_exit(dev); if (event == NETDEV_UP) { if (cnic_register_netdev(dev) != 0) { cnic_put(dev); goto done; } if (!cnic_start_hw(dev)) cnic_ulp_start(dev); } cnic_rcv_netevent(cp, event, 0); 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); } else { struct net_device *realdev; u16 vid; vid = cnic_get_vlan(netdev, &realdev); if (realdev) { dev = cnic_from_netdev(realdev); if (dev) { vid |= VLAN_CFI_MASK; /* make non-zero */ cnic_rcv_netevent(dev->cnic_priv, event, vid); 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_uio_dev *udev; while (!list_empty(&cnic_udev_list)) { udev = list_entry(cnic_udev_list.next, struct cnic_uio_dev, list); cnic_free_uio(udev); } } static int __init cnic_init(void) { int rc = 0; pr_info("%s", version); rc = register_netdevice_notifier(&cnic_netdev_notifier); if (rc) { cnic_release(); return rc; } cnic_wq = create_singlethread_workqueue("cnic_wq"); if (!cnic_wq) { cnic_release(); unregister_netdevice_notifier(&cnic_netdev_notifier); return -ENOMEM; } return 0; } static void __exit cnic_exit(void) { unregister_netdevice_notifier(&cnic_netdev_notifier); cnic_release(); destroy_workqueue(cnic_wq); } module_init(cnic_init); module_exit(cnic_exit);
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