| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * QLogic iSCSI Offload Driver |
| * Copyright (c) 2016 Cavium Inc. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/pci.h> |
| #include <linux/kernel.h> |
| #include <linux/if_arp.h> |
| #include <scsi/iscsi_if.h> |
| #include <linux/inet.h> |
| #include <net/arp.h> |
| #include <linux/list.h> |
| #include <linux/kthread.h> |
| #include <linux/mm.h> |
| #include <linux/if_vlan.h> |
| #include <linux/cpu.h> |
| #include <linux/iscsi_boot_sysfs.h> |
| |
| #include <scsi/scsi_cmnd.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_eh.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsi.h> |
| |
| #include "qedi.h" |
| #include "qedi_gbl.h" |
| #include "qedi_iscsi.h" |
| |
| static uint qedi_qed_debug; |
| module_param(qedi_qed_debug, uint, 0644); |
| MODULE_PARM_DESC(qedi_qed_debug, " QED debug level 0 (default)"); |
| |
| static uint qedi_fw_debug; |
| module_param(qedi_fw_debug, uint, 0644); |
| MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3"); |
| |
| uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM; |
| module_param(qedi_dbg_log, uint, 0644); |
| MODULE_PARM_DESC(qedi_dbg_log, " Default debug level"); |
| |
| uint qedi_io_tracing; |
| module_param(qedi_io_tracing, uint, 0644); |
| MODULE_PARM_DESC(qedi_io_tracing, |
| " Enable logging of SCSI requests/completions into trace buffer. (default off)."); |
| |
| static uint qedi_ll2_buf_size = 0x400; |
| module_param(qedi_ll2_buf_size, uint, 0644); |
| MODULE_PARM_DESC(qedi_ll2_buf_size, |
| "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400."); |
| |
| static uint qedi_flags_override; |
| module_param(qedi_flags_override, uint, 0644); |
| MODULE_PARM_DESC(qedi_flags_override, "Disable/Enable MFW error flags bits action."); |
| |
| const struct qed_iscsi_ops *qedi_ops; |
| static struct scsi_transport_template *qedi_scsi_transport; |
| static struct pci_driver qedi_pci_driver; |
| static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu); |
| static LIST_HEAD(qedi_udev_list); |
| /* Static function declaration */ |
| static int qedi_alloc_global_queues(struct qedi_ctx *qedi); |
| static void qedi_free_global_queues(struct qedi_ctx *qedi); |
| static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid); |
| static void qedi_reset_uio_rings(struct qedi_uio_dev *udev); |
| static void qedi_ll2_free_skbs(struct qedi_ctx *qedi); |
| static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi); |
| static void qedi_recovery_handler(struct work_struct *work); |
| static void qedi_schedule_hw_err_handler(void *dev, |
| enum qed_hw_err_type err_type); |
| |
| static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle) |
| { |
| struct qedi_ctx *qedi; |
| struct qedi_endpoint *qedi_ep; |
| struct iscsi_eqe_data *data; |
| int rval = 0; |
| |
| if (!context || !fw_handle) { |
| QEDI_ERR(NULL, "Recv event with ctx NULL\n"); |
| return -EINVAL; |
| } |
| |
| qedi = (struct qedi_ctx *)context; |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle); |
| |
| data = (struct iscsi_eqe_data *)fw_handle; |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n", |
| data->icid, data->conn_id, data->error_code, |
| data->error_pdu_opcode_reserved); |
| |
| qedi_ep = qedi->ep_tbl[data->icid]; |
| |
| if (!qedi_ep) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "Cannot process event, ep already disconnected, cid=0x%x\n", |
| data->icid); |
| WARN_ON(1); |
| return -ENODEV; |
| } |
| |
| switch (fw_event_code) { |
| case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE: |
| if (qedi_ep->state == EP_STATE_OFLDCONN_START) |
| qedi_ep->state = EP_STATE_OFLDCONN_COMPL; |
| |
| wake_up_interruptible(&qedi_ep->tcp_ofld_wait); |
| break; |
| case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE: |
| qedi_ep->state = EP_STATE_DISCONN_COMPL; |
| wake_up_interruptible(&qedi_ep->tcp_ofld_wait); |
| break; |
| case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR: |
| qedi_process_iscsi_error(qedi_ep, data); |
| break; |
| case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD: |
| case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD: |
| case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME: |
| case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT: |
| case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT: |
| case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2: |
| case ISCSI_EVENT_TYPE_TCP_CONN_ERROR: |
| qedi_process_tcp_error(qedi_ep, data); |
| break; |
| default: |
| QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n", |
| fw_event_code); |
| } |
| |
| return rval; |
| } |
| |
| static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode) |
| { |
| struct qedi_uio_dev *udev = uinfo->priv; |
| struct qedi_ctx *qedi = udev->qedi; |
| |
| if (!capable(CAP_NET_ADMIN)) |
| return -EPERM; |
| |
| if (udev->uio_dev != -1) |
| return -EBUSY; |
| |
| rtnl_lock(); |
| udev->uio_dev = iminor(inode); |
| qedi_reset_uio_rings(udev); |
| set_bit(UIO_DEV_OPENED, &qedi->flags); |
| rtnl_unlock(); |
| |
| return 0; |
| } |
| |
| static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode) |
| { |
| struct qedi_uio_dev *udev = uinfo->priv; |
| struct qedi_ctx *qedi = udev->qedi; |
| |
| udev->uio_dev = -1; |
| clear_bit(UIO_DEV_OPENED, &qedi->flags); |
| qedi_ll2_free_skbs(qedi); |
| return 0; |
| } |
| |
| static void __qedi_free_uio_rings(struct qedi_uio_dev *udev) |
| { |
| if (udev->uctrl) { |
| free_page((unsigned long)udev->uctrl); |
| udev->uctrl = NULL; |
| } |
| |
| if (udev->ll2_ring) { |
| free_page((unsigned long)udev->ll2_ring); |
| udev->ll2_ring = NULL; |
| } |
| |
| if (udev->ll2_buf) { |
| free_pages((unsigned long)udev->ll2_buf, 2); |
| udev->ll2_buf = NULL; |
| } |
| } |
| |
| static void __qedi_free_uio(struct qedi_uio_dev *udev) |
| { |
| uio_unregister_device(&udev->qedi_uinfo); |
| |
| __qedi_free_uio_rings(udev); |
| |
| pci_dev_put(udev->pdev); |
| kfree(udev); |
| } |
| |
| static void qedi_free_uio(struct qedi_uio_dev *udev) |
| { |
| if (!udev) |
| return; |
| |
| list_del_init(&udev->list); |
| __qedi_free_uio(udev); |
| } |
| |
| static void qedi_reset_uio_rings(struct qedi_uio_dev *udev) |
| { |
| struct qedi_ctx *qedi = NULL; |
| struct qedi_uio_ctrl *uctrl = NULL; |
| |
| qedi = udev->qedi; |
| uctrl = udev->uctrl; |
| |
| spin_lock_bh(&qedi->ll2_lock); |
| uctrl->host_rx_cons = 0; |
| uctrl->hw_rx_prod = 0; |
| uctrl->hw_rx_bd_prod = 0; |
| uctrl->host_rx_bd_cons = 0; |
| |
| memset(udev->ll2_ring, 0, udev->ll2_ring_size); |
| memset(udev->ll2_buf, 0, udev->ll2_buf_size); |
| spin_unlock_bh(&qedi->ll2_lock); |
| } |
| |
| static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) |
| { |
| int rc = 0; |
| |
| if (udev->ll2_ring || udev->ll2_buf) |
| return rc; |
| |
| /* Memory for control area. */ |
| udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL); |
| if (!udev->uctrl) |
| return -ENOMEM; |
| |
| /* Allocating memory for LL2 ring */ |
| udev->ll2_ring_size = QEDI_PAGE_SIZE; |
| udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP); |
| if (!udev->ll2_ring) { |
| rc = -ENOMEM; |
| goto exit_alloc_ring; |
| } |
| |
| /* Allocating memory for Tx/Rx pkt buffer */ |
| udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size; |
| udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size); |
| udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP | |
| __GFP_ZERO, 2); |
| if (!udev->ll2_buf) { |
| rc = -ENOMEM; |
| goto exit_alloc_buf; |
| } |
| return rc; |
| |
| exit_alloc_buf: |
| free_page((unsigned long)udev->ll2_ring); |
| udev->ll2_ring = NULL; |
| exit_alloc_ring: |
| return rc; |
| } |
| |
| static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) |
| { |
| struct qedi_uio_dev *udev = NULL; |
| int rc = 0; |
| |
| list_for_each_entry(udev, &qedi_udev_list, list) { |
| if (udev->pdev == qedi->pdev) { |
| udev->qedi = qedi; |
| if (__qedi_alloc_uio_rings(udev)) { |
| udev->qedi = NULL; |
| return -ENOMEM; |
| } |
| qedi->udev = udev; |
| return 0; |
| } |
| } |
| |
| udev = kzalloc(sizeof(*udev), GFP_KERNEL); |
| if (!udev) |
| goto err_udev; |
| |
| udev->uio_dev = -1; |
| |
| udev->qedi = qedi; |
| udev->pdev = qedi->pdev; |
| |
| rc = __qedi_alloc_uio_rings(udev); |
| if (rc) |
| goto err_uctrl; |
| |
| list_add(&udev->list, &qedi_udev_list); |
| |
| pci_dev_get(udev->pdev); |
| qedi->udev = udev; |
| |
| udev->tx_pkt = udev->ll2_buf; |
| udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size; |
| return 0; |
| |
| err_uctrl: |
| kfree(udev); |
| err_udev: |
| return -ENOMEM; |
| } |
| |
| static int qedi_init_uio(struct qedi_ctx *qedi) |
| { |
| struct qedi_uio_dev *udev = qedi->udev; |
| struct uio_info *uinfo; |
| int ret = 0; |
| |
| if (!udev) |
| return -ENOMEM; |
| |
| uinfo = &udev->qedi_uinfo; |
| |
| uinfo->mem[0].addr = (unsigned long)udev->uctrl; |
| uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl); |
| uinfo->mem[0].memtype = UIO_MEM_LOGICAL; |
| |
| uinfo->mem[1].addr = (unsigned long)udev->ll2_ring; |
| uinfo->mem[1].size = udev->ll2_ring_size; |
| uinfo->mem[1].memtype = UIO_MEM_LOGICAL; |
| |
| uinfo->mem[2].addr = (unsigned long)udev->ll2_buf; |
| uinfo->mem[2].size = udev->ll2_buf_size; |
| uinfo->mem[2].memtype = UIO_MEM_LOGICAL; |
| |
| uinfo->name = "qedi_uio"; |
| uinfo->version = QEDI_MODULE_VERSION; |
| uinfo->irq = UIO_IRQ_CUSTOM; |
| |
| uinfo->open = qedi_uio_open; |
| uinfo->release = qedi_uio_close; |
| |
| if (udev->uio_dev == -1) { |
| if (!uinfo->priv) { |
| uinfo->priv = udev; |
| |
| ret = uio_register_device(&udev->pdev->dev, uinfo); |
| if (ret) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "UIO registration failed\n"); |
| } |
| } |
| } |
| |
| return ret; |
| } |
| |
| static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi, |
| struct qed_sb_info *sb_info, u16 sb_id) |
| { |
| struct status_block *sb_virt; |
| dma_addr_t sb_phys; |
| int ret; |
| |
| sb_virt = dma_alloc_coherent(&qedi->pdev->dev, |
| sizeof(struct status_block), &sb_phys, |
| GFP_KERNEL); |
| if (!sb_virt) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Status block allocation failed for id = %d.\n", |
| sb_id); |
| return -ENOMEM; |
| } |
| |
| ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys, |
| sb_id, QED_SB_TYPE_STORAGE); |
| if (ret) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Status block initialization failed for id = %d.\n", |
| sb_id); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static void qedi_free_sb(struct qedi_ctx *qedi) |
| { |
| struct qed_sb_info *sb_info; |
| int id; |
| |
| for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { |
| sb_info = &qedi->sb_array[id]; |
| if (sb_info->sb_virt) |
| dma_free_coherent(&qedi->pdev->dev, |
| sizeof(*sb_info->sb_virt), |
| (void *)sb_info->sb_virt, |
| sb_info->sb_phys); |
| } |
| } |
| |
| static void qedi_free_fp(struct qedi_ctx *qedi) |
| { |
| kfree(qedi->fp_array); |
| kfree(qedi->sb_array); |
| } |
| |
| static void qedi_destroy_fp(struct qedi_ctx *qedi) |
| { |
| qedi_free_sb(qedi); |
| qedi_free_fp(qedi); |
| } |
| |
| static int qedi_alloc_fp(struct qedi_ctx *qedi) |
| { |
| int ret = 0; |
| |
| qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), |
| sizeof(struct qedi_fastpath), GFP_KERNEL); |
| if (!qedi->fp_array) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "fastpath fp array allocation failed.\n"); |
| return -ENOMEM; |
| } |
| |
| qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), |
| sizeof(struct qed_sb_info), GFP_KERNEL); |
| if (!qedi->sb_array) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "fastpath sb array allocation failed.\n"); |
| ret = -ENOMEM; |
| goto free_fp; |
| } |
| |
| return ret; |
| |
| free_fp: |
| qedi_free_fp(qedi); |
| return ret; |
| } |
| |
| static void qedi_int_fp(struct qedi_ctx *qedi) |
| { |
| struct qedi_fastpath *fp; |
| int id; |
| |
| memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) * |
| sizeof(*qedi->fp_array)); |
| memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) * |
| sizeof(*qedi->sb_array)); |
| |
| for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { |
| fp = &qedi->fp_array[id]; |
| fp->sb_info = &qedi->sb_array[id]; |
| fp->sb_id = id; |
| fp->qedi = qedi; |
| snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", |
| "qedi", id); |
| |
| /* fp_array[i] ---- irq cookie |
| * So init data which is needed in int ctx |
| */ |
| } |
| } |
| |
| static int qedi_prepare_fp(struct qedi_ctx *qedi) |
| { |
| struct qedi_fastpath *fp; |
| int id, ret = 0; |
| |
| ret = qedi_alloc_fp(qedi); |
| if (ret) |
| goto err; |
| |
| qedi_int_fp(qedi); |
| |
| for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { |
| fp = &qedi->fp_array[id]; |
| ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id); |
| if (ret) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "SB allocation and initialization failed.\n"); |
| ret = -EIO; |
| goto err_init; |
| } |
| } |
| |
| return 0; |
| |
| err_init: |
| qedi_free_sb(qedi); |
| qedi_free_fp(qedi); |
| err: |
| return ret; |
| } |
| |
| static int qedi_setup_cid_que(struct qedi_ctx *qedi) |
| { |
| int i; |
| |
| qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns, |
| sizeof(u32), GFP_KERNEL); |
| if (!qedi->cid_que.cid_que_base) |
| return -ENOMEM; |
| |
| qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns, |
| sizeof(struct qedi_conn *), |
| GFP_KERNEL); |
| if (!qedi->cid_que.conn_cid_tbl) { |
| kfree(qedi->cid_que.cid_que_base); |
| qedi->cid_que.cid_que_base = NULL; |
| return -ENOMEM; |
| } |
| |
| qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base; |
| qedi->cid_que.cid_q_prod_idx = 0; |
| qedi->cid_que.cid_q_cons_idx = 0; |
| qedi->cid_que.cid_q_max_idx = qedi->max_active_conns; |
| qedi->cid_que.cid_free_cnt = qedi->max_active_conns; |
| |
| for (i = 0; i < qedi->max_active_conns; i++) { |
| qedi->cid_que.cid_que[i] = i; |
| qedi->cid_que.conn_cid_tbl[i] = NULL; |
| } |
| |
| return 0; |
| } |
| |
| static void qedi_release_cid_que(struct qedi_ctx *qedi) |
| { |
| kfree(qedi->cid_que.cid_que_base); |
| qedi->cid_que.cid_que_base = NULL; |
| |
| kfree(qedi->cid_que.conn_cid_tbl); |
| qedi->cid_que.conn_cid_tbl = NULL; |
| } |
| |
| static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, |
| u16 start_id, u16 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 qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl) |
| { |
| kfree(id_tbl->table); |
| id_tbl->table = NULL; |
| } |
| |
| int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 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; |
| } |
| |
| u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl) |
| { |
| u16 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 = QEDI_LOCAL_PORT_INVALID; |
| if (id_tbl->next != 0) { |
| id = find_first_zero_bit(id_tbl->table, id_tbl->next); |
| if (id >= id_tbl->next) |
| id = QEDI_LOCAL_PORT_INVALID; |
| } |
| } |
| |
| 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; |
| } |
| |
| void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id) |
| { |
| if (id == QEDI_LOCAL_PORT_INVALID) |
| return; |
| |
| id -= id_tbl->start; |
| if (id >= id_tbl->max) |
| return; |
| |
| clear_bit(id, id_tbl->table); |
| } |
| |
| static void qedi_cm_free_mem(struct qedi_ctx *qedi) |
| { |
| kfree(qedi->ep_tbl); |
| qedi->ep_tbl = NULL; |
| qedi_free_id_tbl(&qedi->lcl_port_tbl); |
| } |
| |
| static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) |
| { |
| u16 port_id; |
| |
| qedi->ep_tbl = kzalloc((qedi->max_active_conns * |
| sizeof(struct qedi_endpoint *)), GFP_KERNEL); |
| if (!qedi->ep_tbl) |
| return -ENOMEM; |
| port_id = get_random_u32_below(QEDI_LOCAL_PORT_RANGE); |
| if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, |
| QEDI_LOCAL_PORT_MIN, port_id)) { |
| qedi_cm_free_mem(qedi); |
| return -ENOMEM; |
| } |
| |
| return 0; |
| } |
| |
| static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) |
| { |
| struct Scsi_Host *shost; |
| struct qedi_ctx *qedi = NULL; |
| |
| shost = iscsi_host_alloc(&qedi_host_template, |
| sizeof(struct qedi_ctx), 0); |
| if (!shost) { |
| QEDI_ERR(NULL, "Could not allocate shost\n"); |
| goto exit_setup_shost; |
| } |
| |
| shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1; |
| shost->max_channel = 0; |
| shost->max_lun = ~0; |
| shost->max_cmd_len = 16; |
| shost->transportt = qedi_scsi_transport; |
| |
| qedi = iscsi_host_priv(shost); |
| memset(qedi, 0, sizeof(*qedi)); |
| qedi->shost = shost; |
| qedi->dbg_ctx.host_no = shost->host_no; |
| qedi->pdev = pdev; |
| qedi->dbg_ctx.pdev = pdev; |
| qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA; |
| qedi->max_sqes = QEDI_SQ_SIZE; |
| |
| shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); |
| |
| pci_set_drvdata(pdev, qedi); |
| |
| exit_setup_shost: |
| return qedi; |
| } |
| |
| static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) |
| { |
| struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; |
| struct skb_work_list *work; |
| struct ethhdr *eh; |
| |
| if (!qedi) { |
| QEDI_ERR(NULL, "qedi is NULL\n"); |
| return -1; |
| } |
| |
| if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO, |
| "UIO DEV is not opened\n"); |
| kfree_skb(skb); |
| return 0; |
| } |
| |
| eh = (struct ethhdr *)skb->data; |
| /* Undo VLAN encapsulation */ |
| if (eh->h_proto == htons(ETH_P_8021Q)) { |
| memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); |
| eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN); |
| skb_reset_mac_header(skb); |
| } |
| |
| /* Filter out non FIP/FCoE frames here to free them faster */ |
| if (eh->h_proto != htons(ETH_P_ARP) && |
| eh->h_proto != htons(ETH_P_IP) && |
| eh->h_proto != htons(ETH_P_IPV6)) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, |
| "Dropping frame ethertype [0x%x] len [0x%x].\n", |
| eh->h_proto, skb->len); |
| kfree_skb(skb); |
| return 0; |
| } |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, |
| "Allowed frame ethertype [0x%x] len [0x%x].\n", |
| eh->h_proto, skb->len); |
| |
| work = kzalloc(sizeof(*work), GFP_ATOMIC); |
| if (!work) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "Could not allocate work so dropping frame.\n"); |
| kfree_skb(skb); |
| return 0; |
| } |
| |
| INIT_LIST_HEAD(&work->list); |
| work->skb = skb; |
| |
| if (skb_vlan_tag_present(skb)) |
| work->vlan_id = skb_vlan_tag_get(skb); |
| |
| if (work->vlan_id) |
| __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id); |
| |
| spin_lock_bh(&qedi->ll2_lock); |
| list_add_tail(&work->list, &qedi->ll2_skb_list); |
| spin_unlock_bh(&qedi->ll2_lock); |
| |
| wake_up_process(qedi->ll2_recv_thread); |
| |
| return 0; |
| } |
| |
| /* map this skb to iscsiuio mmaped region */ |
| static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, |
| u16 vlan_id) |
| { |
| struct qedi_uio_dev *udev = NULL; |
| struct qedi_uio_ctrl *uctrl = NULL; |
| struct qedi_rx_bd rxbd; |
| struct qedi_rx_bd *p_rxbd; |
| u32 rx_bd_prod; |
| void *pkt; |
| int len = 0; |
| u32 prod; |
| |
| if (!qedi) { |
| QEDI_ERR(NULL, "qedi is NULL\n"); |
| return -1; |
| } |
| |
| udev = qedi->udev; |
| uctrl = udev->uctrl; |
| |
| ++uctrl->hw_rx_prod_cnt; |
| prod = (uctrl->hw_rx_prod + 1) % RX_RING; |
| |
| pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size); |
| len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size); |
| memcpy(pkt, skb->data, len); |
| |
| memset(&rxbd, 0, sizeof(rxbd)); |
| rxbd.rx_pkt_index = prod; |
| rxbd.rx_pkt_len = len; |
| rxbd.vlan_id = vlan_id; |
| |
| uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD; |
| rx_bd_prod = uctrl->hw_rx_bd_prod; |
| p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring; |
| p_rxbd += rx_bd_prod; |
| |
| memcpy(p_rxbd, &rxbd, sizeof(rxbd)); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, |
| "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n", |
| uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod, |
| rxbd.rx_pkt_index, rxbd.rx_pkt_len); |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, |
| "host_rx_cons [%d] hw_rx_bd_cons [%d].\n", |
| uctrl->host_rx_cons, uctrl->host_rx_bd_cons); |
| |
| uctrl->hw_rx_prod = prod; |
| |
| /* notify the iscsiuio about new packet */ |
| uio_event_notify(&udev->qedi_uinfo); |
| |
| return 0; |
| } |
| |
| static void qedi_ll2_free_skbs(struct qedi_ctx *qedi) |
| { |
| struct skb_work_list *work, *work_tmp; |
| |
| spin_lock_bh(&qedi->ll2_lock); |
| list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { |
| list_del(&work->list); |
| kfree_skb(work->skb); |
| kfree(work); |
| } |
| spin_unlock_bh(&qedi->ll2_lock); |
| } |
| |
| static int qedi_ll2_recv_thread(void *arg) |
| { |
| struct qedi_ctx *qedi = (struct qedi_ctx *)arg; |
| struct skb_work_list *work, *work_tmp; |
| |
| set_user_nice(current, -20); |
| |
| while (!kthread_should_stop()) { |
| spin_lock_bh(&qedi->ll2_lock); |
| list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, |
| list) { |
| list_del(&work->list); |
| qedi_ll2_process_skb(qedi, work->skb, work->vlan_id); |
| kfree_skb(work->skb); |
| kfree(work); |
| } |
| set_current_state(TASK_INTERRUPTIBLE); |
| spin_unlock_bh(&qedi->ll2_lock); |
| schedule(); |
| } |
| |
| __set_current_state(TASK_RUNNING); |
| return 0; |
| } |
| |
| static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) |
| { |
| u8 num_sq_pages; |
| u32 log_page_size; |
| int rval = 0; |
| |
| |
| num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE; |
| |
| qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Number of CQ count is %d\n", qedi->num_queues); |
| |
| memset(&qedi->pf_params.iscsi_pf_params, 0, |
| sizeof(qedi->pf_params.iscsi_pf_params)); |
| |
| qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev, |
| qedi->num_queues * sizeof(struct qedi_glbl_q_params), |
| &qedi->hw_p_cpuq, GFP_KERNEL); |
| if (!qedi->p_cpuq) { |
| QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n"); |
| rval = -1; |
| goto err_alloc_mem; |
| } |
| |
| rval = qedi_alloc_global_queues(qedi); |
| if (rval) { |
| QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n"); |
| rval = -1; |
| goto err_alloc_mem; |
| } |
| |
| qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA; |
| qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK; |
| qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10; |
| qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages; |
| qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages; |
| qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages; |
| qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues; |
| qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug; |
| qedi->pf_params.iscsi_pf_params.two_msl_timer = QED_TWO_MSL_TIMER_DFLT; |
| qedi->pf_params.iscsi_pf_params.tx_sws_timer = QED_TX_SWS_TIMER_DFLT; |
| qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; |
| |
| for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { |
| if ((1 << log_page_size) == QEDI_PAGE_SIZE) |
| break; |
| } |
| qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; |
| |
| qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = |
| (u64)qedi->hw_p_cpuq; |
| |
| /* RQ BDQ initializations. |
| * rq_num_entries: suggested value for Initiator is 16 (4KB RQ) |
| * rqe_log_size: 8 for 256B RQE |
| */ |
| qedi->pf_params.iscsi_pf_params.rqe_log_size = 8; |
| /* BDQ address and size */ |
| qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] = |
| qedi->bdq_pbl_list_dma; |
| qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] = |
| qedi->bdq_pbl_list_num_entries; |
| qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE; |
| |
| /* cq_num_entries: num_tasks + rq_num_entries */ |
| qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048; |
| |
| qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX; |
| qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1; |
| |
| err_alloc_mem: |
| return rval; |
| } |
| |
| /* Free DMA coherent memory for array of queue pointers we pass to qed */ |
| static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) |
| { |
| size_t size = 0; |
| |
| if (qedi->p_cpuq) { |
| size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); |
| dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq, |
| qedi->hw_p_cpuq); |
| } |
| |
| qedi_free_global_queues(qedi); |
| |
| kfree(qedi->global_queues); |
| } |
| |
| static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block, |
| struct qedi_boot_target *tgt, u8 index) |
| { |
| u32 ipv6_en; |
| |
| ipv6_en = !!(block->generic.ctrl_flags & |
| NVM_ISCSI_CFG_GEN_IPV6_ENABLED); |
| |
| snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s", |
| block->target[index].target_name.byte); |
| |
| tgt->ipv6_en = ipv6_en; |
| |
| if (ipv6_en) |
| snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n", |
| block->target[index].ipv6_addr.byte); |
| else |
| snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n", |
| block->target[index].ipv4_addr.byte); |
| } |
| |
| static int qedi_find_boot_info(struct qedi_ctx *qedi, |
| struct qed_mfw_tlv_iscsi *iscsi, |
| struct nvm_iscsi_block *block) |
| { |
| struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL; |
| u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0; |
| struct iscsi_cls_session *cls_sess; |
| struct iscsi_cls_conn *cls_conn; |
| struct qedi_conn *qedi_conn; |
| struct iscsi_session *sess; |
| struct iscsi_conn *conn; |
| char ep_ip_addr[64]; |
| int i, ret = 0; |
| |
| pri_ctrl_flags = !!(block->target[0].ctrl_flags & |
| NVM_ISCSI_CFG_TARGET_ENABLED); |
| if (pri_ctrl_flags) { |
| pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL); |
| if (!pri_tgt) |
| return -1; |
| qedi_get_boot_tgt_info(block, pri_tgt, 0); |
| } |
| |
| sec_ctrl_flags = !!(block->target[1].ctrl_flags & |
| NVM_ISCSI_CFG_TARGET_ENABLED); |
| if (sec_ctrl_flags) { |
| sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL); |
| if (!sec_tgt) { |
| ret = -1; |
| goto free_tgt; |
| } |
| qedi_get_boot_tgt_info(block, sec_tgt, 1); |
| } |
| |
| for (i = 0; i < qedi->max_active_conns; i++) { |
| qedi_conn = qedi_get_conn_from_id(qedi, i); |
| if (!qedi_conn) |
| continue; |
| |
| if (qedi_conn->ep->ip_type == TCP_IPV4) |
| snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n", |
| qedi_conn->ep->dst_addr); |
| else |
| snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n", |
| qedi_conn->ep->dst_addr); |
| |
| cls_conn = qedi_conn->cls_conn; |
| conn = cls_conn->dd_data; |
| cls_sess = iscsi_conn_to_session(cls_conn); |
| sess = cls_sess->dd_data; |
| |
| if (!iscsi_is_session_online(cls_sess)) |
| continue; |
| |
| if (!sess->targetname) |
| continue; |
| |
| if (pri_ctrl_flags) { |
| if (!strcmp(pri_tgt->iscsi_name, sess->targetname) && |
| !strcmp(pri_tgt->ip_addr, ep_ip_addr)) { |
| found = 1; |
| break; |
| } |
| } |
| |
| if (sec_ctrl_flags) { |
| if (!strcmp(sec_tgt->iscsi_name, sess->targetname) && |
| !strcmp(sec_tgt->ip_addr, ep_ip_addr)) { |
| found = 1; |
| break; |
| } |
| } |
| } |
| |
| if (found) { |
| if (conn->hdrdgst_en) { |
| iscsi->header_digest_set = true; |
| iscsi->header_digest = 1; |
| } |
| |
| if (conn->datadgst_en) { |
| iscsi->data_digest_set = true; |
| iscsi->data_digest = 1; |
| } |
| iscsi->boot_taget_portal_set = true; |
| iscsi->boot_taget_portal = sess->tpgt; |
| |
| } else { |
| ret = -1; |
| } |
| |
| if (sec_ctrl_flags) |
| kfree(sec_tgt); |
| free_tgt: |
| if (pri_ctrl_flags) |
| kfree(pri_tgt); |
| |
| return ret; |
| } |
| |
| static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) |
| { |
| struct qedi_ctx *qedi; |
| |
| if (!dev) { |
| QEDI_INFO(NULL, QEDI_LOG_EVT, |
| "dev is NULL so ignoring get_generic_tlv_data request.\n"); |
| return; |
| } |
| qedi = (struct qedi_ctx *)dev; |
| |
| memset(data, 0, sizeof(struct qed_generic_tlvs)); |
| ether_addr_copy(data->mac[0], qedi->mac); |
| } |
| |
| /* |
| * Protocol TLV handler |
| */ |
| static void qedi_get_protocol_tlv_data(void *dev, void *data) |
| { |
| struct qed_mfw_tlv_iscsi *iscsi = data; |
| struct qed_iscsi_stats *fw_iscsi_stats; |
| struct nvm_iscsi_block *block = NULL; |
| u32 chap_en = 0, mchap_en = 0; |
| struct qedi_ctx *qedi = dev; |
| int rval = 0; |
| |
| fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL); |
| if (!fw_iscsi_stats) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Could not allocate memory for fw_iscsi_stats.\n"); |
| goto exit_get_data; |
| } |
| |
| mutex_lock(&qedi->stats_lock); |
| /* Query firmware for offload stats */ |
| qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats); |
| mutex_unlock(&qedi->stats_lock); |
| |
| iscsi->rx_frames_set = true; |
| iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt; |
| iscsi->rx_bytes_set = true; |
| iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt; |
| iscsi->tx_frames_set = true; |
| iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt; |
| iscsi->tx_bytes_set = true; |
| iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt; |
| iscsi->frame_size_set = true; |
| iscsi->frame_size = qedi->ll2_mtu; |
| block = qedi_get_nvram_block(qedi); |
| if (block) { |
| chap_en = !!(block->generic.ctrl_flags & |
| NVM_ISCSI_CFG_GEN_CHAP_ENABLED); |
| mchap_en = !!(block->generic.ctrl_flags & |
| NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED); |
| |
| iscsi->auth_method_set = (chap_en || mchap_en) ? true : false; |
| iscsi->auth_method = 1; |
| if (chap_en) |
| iscsi->auth_method = 2; |
| if (mchap_en) |
| iscsi->auth_method = 3; |
| |
| iscsi->tx_desc_size_set = true; |
| iscsi->tx_desc_size = QEDI_SQ_SIZE; |
| iscsi->rx_desc_size_set = true; |
| iscsi->rx_desc_size = QEDI_CQ_SIZE; |
| |
| /* tpgt, hdr digest, data digest */ |
| rval = qedi_find_boot_info(qedi, iscsi, block); |
| if (rval) |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Boot target not set"); |
| } |
| |
| kfree(fw_iscsi_stats); |
| exit_get_data: |
| return; |
| } |
| |
| void qedi_schedule_hw_err_handler(void *dev, |
| enum qed_hw_err_type err_type) |
| { |
| struct qedi_ctx *qedi = (struct qedi_ctx *)dev; |
| unsigned long override_flags = qedi_flags_override; |
| |
| if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags)) |
| qedi->qedi_err_flags = qedi_flags_override; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "HW error handler scheduled, err=%d err_flags=0x%x\n", |
| err_type, qedi->qedi_err_flags); |
| |
| switch (err_type) { |
| case QED_HW_ERR_FAN_FAIL: |
| schedule_delayed_work(&qedi->board_disable_work, 0); |
| break; |
| case QED_HW_ERR_MFW_RESP_FAIL: |
| case QED_HW_ERR_HW_ATTN: |
| case QED_HW_ERR_DMAE_FAIL: |
| case QED_HW_ERR_RAMROD_FAIL: |
| case QED_HW_ERR_FW_ASSERT: |
| /* Prevent HW attentions from being reasserted */ |
| if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags)) |
| qedi_ops->common->attn_clr_enable(qedi->cdev, true); |
| |
| if (err_type == QED_HW_ERR_RAMROD_FAIL && |
| test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags)) |
| qedi_ops->common->recovery_process(qedi->cdev); |
| |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static void qedi_schedule_recovery_handler(void *dev) |
| { |
| struct qedi_ctx *qedi = dev; |
| |
| QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n"); |
| |
| if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) |
| return; |
| |
| atomic_set(&qedi->link_state, QEDI_LINK_DOWN); |
| |
| schedule_delayed_work(&qedi->recovery_work, 0); |
| } |
| |
| static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session) |
| { |
| struct iscsi_session *session = cls_session->dd_data; |
| struct iscsi_conn *conn = session->leadconn; |
| struct qedi_conn *qedi_conn = conn->dd_data; |
| |
| qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); |
| } |
| |
| static void qedi_link_update(void *dev, struct qed_link_output *link) |
| { |
| struct qedi_ctx *qedi = (struct qedi_ctx *)dev; |
| |
| if (link->link_up) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n"); |
| atomic_set(&qedi->link_state, QEDI_LINK_UP); |
| } else { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Link Down event.\n"); |
| atomic_set(&qedi->link_state, QEDI_LINK_DOWN); |
| iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery); |
| } |
| } |
| |
| static struct qed_iscsi_cb_ops qedi_cb_ops = { |
| { |
| .link_update = qedi_link_update, |
| .schedule_recovery_handler = qedi_schedule_recovery_handler, |
| .schedule_hw_err_handler = qedi_schedule_hw_err_handler, |
| .get_protocol_tlv_data = qedi_get_protocol_tlv_data, |
| .get_generic_tlv_data = qedi_get_generic_tlv_data, |
| } |
| }; |
| |
| static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, |
| u16 que_idx, struct qedi_percpu_s *p) |
| { |
| struct qedi_work *qedi_work; |
| struct qedi_conn *q_conn; |
| struct qedi_cmd *qedi_cmd; |
| u32 iscsi_cid; |
| int rc = 0; |
| |
| iscsi_cid = cqe->cqe_common.conn_id; |
| q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; |
| if (!q_conn) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "Session no longer exists for cid=0x%x!!\n", |
| iscsi_cid); |
| return -1; |
| } |
| |
| switch (cqe->cqe_common.cqe_type) { |
| case ISCSI_CQE_TYPE_SOLICITED: |
| case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: |
| qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid); |
| if (!qedi_cmd) { |
| rc = -1; |
| break; |
| } |
| INIT_LIST_HEAD(&qedi_cmd->cqe_work.list); |
| qedi_cmd->cqe_work.qedi = qedi; |
| memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); |
| qedi_cmd->cqe_work.que_idx = que_idx; |
| qedi_cmd->cqe_work.is_solicited = true; |
| list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list); |
| break; |
| case ISCSI_CQE_TYPE_UNSOLICITED: |
| case ISCSI_CQE_TYPE_DUMMY: |
| case ISCSI_CQE_TYPE_TASK_CLEANUP: |
| qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC); |
| if (!qedi_work) { |
| rc = -1; |
| break; |
| } |
| INIT_LIST_HEAD(&qedi_work->list); |
| qedi_work->qedi = qedi; |
| memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); |
| qedi_work->que_idx = que_idx; |
| qedi_work->is_solicited = false; |
| list_add_tail(&qedi_work->list, &p->work_list); |
| break; |
| default: |
| rc = -1; |
| QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n"); |
| } |
| return rc; |
| } |
| |
| static bool qedi_process_completions(struct qedi_fastpath *fp) |
| { |
| struct qedi_ctx *qedi = fp->qedi; |
| struct qed_sb_info *sb_info = fp->sb_info; |
| struct status_block *sb = sb_info->sb_virt; |
| struct qedi_percpu_s *p = NULL; |
| struct global_queue *que; |
| u16 prod_idx; |
| unsigned long flags; |
| union iscsi_cqe *cqe; |
| int cpu; |
| int ret; |
| |
| /* Get the current firmware producer index */ |
| prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; |
| |
| if (prod_idx >= QEDI_CQ_SIZE) |
| prod_idx = prod_idx % QEDI_CQ_SIZE; |
| |
| que = qedi->global_queues[fp->sb_id]; |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, |
| "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n", |
| que, prod_idx, que->cq_cons_idx, fp->sb_id); |
| |
| qedi->intr_cpu = fp->sb_id; |
| cpu = smp_processor_id(); |
| p = &per_cpu(qedi_percpu, cpu); |
| |
| if (unlikely(!p->iothread)) |
| WARN_ON(1); |
| |
| spin_lock_irqsave(&p->p_work_lock, flags); |
| while (que->cq_cons_idx != prod_idx) { |
| cqe = &que->cq[que->cq_cons_idx]; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, |
| "cqe=%p prod_idx=%d cons_idx=%d.\n", |
| cqe, prod_idx, que->cq_cons_idx); |
| |
| ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p); |
| if (ret) |
| QEDI_WARN(&qedi->dbg_ctx, |
| "Dropping CQE 0x%x for cid=0x%x.\n", |
| que->cq_cons_idx, cqe->cqe_common.conn_id); |
| |
| que->cq_cons_idx++; |
| if (que->cq_cons_idx == QEDI_CQ_SIZE) |
| que->cq_cons_idx = 0; |
| } |
| wake_up_process(p->iothread); |
| spin_unlock_irqrestore(&p->p_work_lock, flags); |
| |
| return true; |
| } |
| |
| static bool qedi_fp_has_work(struct qedi_fastpath *fp) |
| { |
| struct qedi_ctx *qedi = fp->qedi; |
| struct global_queue *que; |
| struct qed_sb_info *sb_info = fp->sb_info; |
| struct status_block *sb = sb_info->sb_virt; |
| u16 prod_idx; |
| |
| barrier(); |
| |
| /* Get the current firmware producer index */ |
| prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; |
| |
| /* Get the pointer to the global CQ this completion is on */ |
| que = qedi->global_queues[fp->sb_id]; |
| |
| /* prod idx wrap around uint16 */ |
| if (prod_idx >= QEDI_CQ_SIZE) |
| prod_idx = prod_idx % QEDI_CQ_SIZE; |
| |
| return (que->cq_cons_idx != prod_idx); |
| } |
| |
| /* MSI-X fastpath handler code */ |
| static irqreturn_t qedi_msix_handler(int irq, void *dev_id) |
| { |
| struct qedi_fastpath *fp = dev_id; |
| struct qedi_ctx *qedi = fp->qedi; |
| bool wake_io_thread = true; |
| |
| qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0); |
| |
| process_again: |
| wake_io_thread = qedi_process_completions(fp); |
| if (wake_io_thread) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
| "process already running\n"); |
| } |
| |
| if (!qedi_fp_has_work(fp)) |
| qed_sb_update_sb_idx(fp->sb_info); |
| |
| /* Check for more work */ |
| rmb(); |
| |
| if (!qedi_fp_has_work(fp)) |
| qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); |
| else |
| goto process_again; |
| |
| return IRQ_HANDLED; |
| } |
| |
| /* simd handler for MSI/INTa */ |
| static void qedi_simd_int_handler(void *cookie) |
| { |
| /* Cookie is qedi_ctx struct */ |
| struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; |
| |
| QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi); |
| } |
| |
| #define QEDI_SIMD_HANDLER_NUM 0 |
| static void qedi_sync_free_irqs(struct qedi_ctx *qedi) |
| { |
| int i; |
| u16 idx; |
| |
| if (qedi->int_info.msix_cnt) { |
| for (i = 0; i < qedi->int_info.used_cnt; i++) { |
| idx = i * qedi->dev_info.common.num_hwfns + |
| qedi_ops->common->get_affin_hwfn_idx(qedi->cdev); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Freeing IRQ #%d vector_idx=%d.\n", i, idx); |
| |
| synchronize_irq(qedi->int_info.msix[idx].vector); |
| irq_set_affinity_hint(qedi->int_info.msix[idx].vector, |
| NULL); |
| free_irq(qedi->int_info.msix[idx].vector, |
| &qedi->fp_array[i]); |
| } |
| } else { |
| qedi_ops->common->simd_handler_clean(qedi->cdev, |
| QEDI_SIMD_HANDLER_NUM); |
| } |
| |
| qedi->int_info.used_cnt = 0; |
| qedi_ops->common->set_fp_int(qedi->cdev, 0); |
| } |
| |
| static int qedi_request_msix_irq(struct qedi_ctx *qedi) |
| { |
| int i, rc, cpu; |
| u16 idx; |
| |
| cpu = cpumask_first(cpu_online_mask); |
| for (i = 0; i < qedi->msix_count; i++) { |
| idx = i * qedi->dev_info.common.num_hwfns + |
| qedi_ops->common->get_affin_hwfn_idx(qedi->cdev); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", |
| qedi->dev_info.common.num_hwfns, |
| qedi_ops->common->get_affin_hwfn_idx(qedi->cdev)); |
| |
| rc = request_irq(qedi->int_info.msix[idx].vector, |
| qedi_msix_handler, 0, "qedi", |
| &qedi->fp_array[i]); |
| if (rc) { |
| QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n"); |
| qedi_sync_free_irqs(qedi); |
| return rc; |
| } |
| qedi->int_info.used_cnt++; |
| rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector, |
| get_cpu_mask(cpu)); |
| cpu = cpumask_next(cpu, cpu_online_mask); |
| } |
| |
| return 0; |
| } |
| |
| static int qedi_setup_int(struct qedi_ctx *qedi) |
| { |
| int rc = 0; |
| |
| rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues); |
| if (rc < 0) |
| goto exit_setup_int; |
| |
| qedi->msix_count = rc; |
| |
| rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); |
| if (rc) |
| goto exit_setup_int; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
| "Number of msix_cnt = 0x%x num of cpus = 0x%x\n", |
| qedi->int_info.msix_cnt, num_online_cpus()); |
| |
| if (qedi->int_info.msix_cnt) { |
| rc = qedi_request_msix_irq(qedi); |
| goto exit_setup_int; |
| } else { |
| qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, |
| QEDI_SIMD_HANDLER_NUM, |
| qedi_simd_int_handler); |
| qedi->int_info.used_cnt = 1; |
| } |
| |
| exit_setup_int: |
| return rc; |
| } |
| |
| static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) |
| { |
| if (qedi->iscsi_image) |
| dma_free_coherent(&qedi->pdev->dev, |
| sizeof(struct qedi_nvm_iscsi_image), |
| qedi->iscsi_image, qedi->nvm_buf_dma); |
| } |
| |
| static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) |
| { |
| qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev, |
| sizeof(struct qedi_nvm_iscsi_image), |
| &qedi->nvm_buf_dma, GFP_KERNEL); |
| if (!qedi->iscsi_image) { |
| QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n"); |
| return -ENOMEM; |
| } |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image, |
| qedi->nvm_buf_dma); |
| |
| return 0; |
| } |
| |
| static void qedi_free_bdq(struct qedi_ctx *qedi) |
| { |
| int i; |
| |
| if (qedi->bdq_pbl_list) |
| dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, |
| qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); |
| |
| if (qedi->bdq_pbl) |
| dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, |
| qedi->bdq_pbl, qedi->bdq_pbl_dma); |
| |
| for (i = 0; i < QEDI_BDQ_NUM; i++) { |
| if (qedi->bdq[i].buf_addr) { |
| dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, |
| qedi->bdq[i].buf_addr, |
| qedi->bdq[i].buf_dma); |
| } |
| } |
| } |
| |
| static void qedi_free_global_queues(struct qedi_ctx *qedi) |
| { |
| int i; |
| struct global_queue **gl = qedi->global_queues; |
| |
| for (i = 0; i < qedi->num_queues; i++) { |
| if (!gl[i]) |
| continue; |
| |
| if (gl[i]->cq) |
| dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size, |
| gl[i]->cq, gl[i]->cq_dma); |
| if (gl[i]->cq_pbl) |
| dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size, |
| gl[i]->cq_pbl, gl[i]->cq_pbl_dma); |
| |
| kfree(gl[i]); |
| } |
| qedi_free_bdq(qedi); |
| qedi_free_nvm_iscsi_cfg(qedi); |
| } |
| |
| static int qedi_alloc_bdq(struct qedi_ctx *qedi) |
| { |
| int i; |
| struct scsi_bd *pbl; |
| u64 *list; |
| |
| /* Alloc dma memory for BDQ buffers */ |
| for (i = 0; i < QEDI_BDQ_NUM; i++) { |
| qedi->bdq[i].buf_addr = |
| dma_alloc_coherent(&qedi->pdev->dev, |
| QEDI_BDQ_BUF_SIZE, |
| &qedi->bdq[i].buf_dma, |
| GFP_KERNEL); |
| if (!qedi->bdq[i].buf_addr) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Could not allocate BDQ buffer %d.\n", i); |
| return -ENOMEM; |
| } |
| } |
| |
| /* Alloc dma memory for BDQ page buffer list */ |
| qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); |
| qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE); |
| qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n", |
| qedi->rq_num_entries); |
| |
| qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev, |
| qedi->bdq_pbl_mem_size, |
| &qedi->bdq_pbl_dma, GFP_KERNEL); |
| if (!qedi->bdq_pbl) { |
| QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n"); |
| return -ENOMEM; |
| } |
| |
| /* |
| * Populate BDQ PBL with physical and virtual address of individual |
| * BDQ buffers |
| */ |
| pbl = (struct scsi_bd *)qedi->bdq_pbl; |
| for (i = 0; i < QEDI_BDQ_NUM; i++) { |
| pbl->address.hi = |
| cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma)); |
| pbl->address.lo = |
| cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma)); |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n", |
| pbl, pbl->address.hi, pbl->address.lo, i); |
| pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; |
| pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; |
| pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; |
| pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i); |
| pbl++; |
| } |
| |
| /* Allocate list of PBL pages */ |
| qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev, |
| QEDI_PAGE_SIZE, |
| &qedi->bdq_pbl_list_dma, |
| GFP_KERNEL); |
| if (!qedi->bdq_pbl_list) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Could not allocate list of PBL pages.\n"); |
| return -ENOMEM; |
| } |
| |
| /* |
| * Now populate PBL list with pages that contain pointers to the |
| * individual buffers. |
| */ |
| qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / |
| QEDI_PAGE_SIZE; |
| list = (u64 *)qedi->bdq_pbl_list; |
| for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { |
| *list = qedi->bdq_pbl_dma; |
| list++; |
| } |
| |
| return 0; |
| } |
| |
| static int qedi_alloc_global_queues(struct qedi_ctx *qedi) |
| { |
| u32 *list; |
| int i; |
| int status; |
| u32 *pbl; |
| dma_addr_t page; |
| int num_pages; |
| |
| /* |
| * Number of global queues (CQ / RQ). This should |
| * be <= number of available MSIX vectors for the PF |
| */ |
| if (!qedi->num_queues) { |
| QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n"); |
| return -ENOMEM; |
| } |
| |
| /* Make sure we allocated the PBL that will contain the physical |
| * addresses of our queues |
| */ |
| if (!qedi->p_cpuq) { |
| status = -EINVAL; |
| goto mem_alloc_failure; |
| } |
| |
| qedi->global_queues = kzalloc((sizeof(struct global_queue *) * |
| qedi->num_queues), GFP_KERNEL); |
| if (!qedi->global_queues) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Unable to allocate global queues array ptr memory\n"); |
| return -ENOMEM; |
| } |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
| "qedi->global_queues=%p.\n", qedi->global_queues); |
| |
| /* Allocate DMA coherent buffers for BDQ */ |
| status = qedi_alloc_bdq(qedi); |
| if (status) |
| goto mem_alloc_failure; |
| |
| /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ |
| status = qedi_alloc_nvm_iscsi_cfg(qedi); |
| if (status) |
| goto mem_alloc_failure; |
| |
| /* Allocate a CQ and an associated PBL for each MSI-X |
| * vector. |
| */ |
| for (i = 0; i < qedi->num_queues; i++) { |
| qedi->global_queues[i] = |
| kzalloc(sizeof(*qedi->global_queues[0]), |
| GFP_KERNEL); |
| if (!qedi->global_queues[i]) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Unable to allocation global queue %d.\n", i); |
| status = -ENOMEM; |
| goto mem_alloc_failure; |
| } |
| |
| qedi->global_queues[i]->cq_mem_size = |
| (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); |
| qedi->global_queues[i]->cq_mem_size = |
| (qedi->global_queues[i]->cq_mem_size + |
| (QEDI_PAGE_SIZE - 1)); |
| |
| qedi->global_queues[i]->cq_pbl_size = |
| (qedi->global_queues[i]->cq_mem_size / |
| QEDI_PAGE_SIZE) * sizeof(void *); |
| qedi->global_queues[i]->cq_pbl_size = |
| (qedi->global_queues[i]->cq_pbl_size + |
| (QEDI_PAGE_SIZE - 1)); |
| |
| qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev, |
| qedi->global_queues[i]->cq_mem_size, |
| &qedi->global_queues[i]->cq_dma, |
| GFP_KERNEL); |
| |
| if (!qedi->global_queues[i]->cq) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "Could not allocate cq.\n"); |
| status = -ENOMEM; |
| goto mem_alloc_failure; |
| } |
| qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev, |
| qedi->global_queues[i]->cq_pbl_size, |
| &qedi->global_queues[i]->cq_pbl_dma, |
| GFP_KERNEL); |
| |
| if (!qedi->global_queues[i]->cq_pbl) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "Could not allocate cq PBL.\n"); |
| status = -ENOMEM; |
| goto mem_alloc_failure; |
| } |
| |
| /* Create PBL */ |
| num_pages = qedi->global_queues[i]->cq_mem_size / |
| QEDI_PAGE_SIZE; |
| page = qedi->global_queues[i]->cq_dma; |
| pbl = (u32 *)qedi->global_queues[i]->cq_pbl; |
| |
| while (num_pages--) { |
| *pbl = (u32)page; |
| pbl++; |
| *pbl = (u32)((u64)page >> 32); |
| pbl++; |
| page += QEDI_PAGE_SIZE; |
| } |
| } |
| |
| list = (u32 *)qedi->p_cpuq; |
| |
| /* |
| * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, |
| * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points |
| * to the physical address which contains an array of pointers to the |
| * physical addresses of the specific queue pages. |
| */ |
| for (i = 0; i < qedi->num_queues; i++) { |
| *list = (u32)qedi->global_queues[i]->cq_pbl_dma; |
| list++; |
| *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); |
| list++; |
| |
| *list = (u32)0; |
| list++; |
| *list = (u32)((u64)0 >> 32); |
| list++; |
| } |
| |
| return 0; |
| |
| mem_alloc_failure: |
| qedi_free_global_queues(qedi); |
| return status; |
| } |
| |
| int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) |
| { |
| int rval = 0; |
| u32 *pbl; |
| dma_addr_t page; |
| int num_pages; |
| |
| if (!ep) |
| return -EIO; |
| |
| /* Calculate appropriate queue and PBL sizes */ |
| ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); |
| ep->sq_mem_size += QEDI_PAGE_SIZE - 1; |
| |
| ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); |
| ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; |
| |
| ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size, |
| &ep->sq_dma, GFP_KERNEL); |
| if (!ep->sq) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "Could not allocate send queue.\n"); |
| rval = -ENOMEM; |
| goto out; |
| } |
| ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size, |
| &ep->sq_pbl_dma, GFP_KERNEL); |
| if (!ep->sq_pbl) { |
| QEDI_WARN(&qedi->dbg_ctx, |
| "Could not allocate send queue PBL.\n"); |
| rval = -ENOMEM; |
| goto out_free_sq; |
| } |
| |
| /* Create PBL */ |
| num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; |
| page = ep->sq_dma; |
| pbl = (u32 *)ep->sq_pbl; |
| |
| while (num_pages--) { |
| *pbl = (u32)page; |
| pbl++; |
| *pbl = (u32)((u64)page >> 32); |
| pbl++; |
| page += QEDI_PAGE_SIZE; |
| } |
| |
| return rval; |
| |
| out_free_sq: |
| dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, |
| ep->sq_dma); |
| out: |
| return rval; |
| } |
| |
| void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) |
| { |
| if (ep->sq_pbl) |
| dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl, |
| ep->sq_pbl_dma); |
| if (ep->sq) |
| dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, |
| ep->sq_dma); |
| } |
| |
| int qedi_get_task_idx(struct qedi_ctx *qedi) |
| { |
| s16 tmp_idx; |
| |
| again: |
| tmp_idx = find_first_zero_bit(qedi->task_idx_map, |
| MAX_ISCSI_TASK_ENTRIES); |
| |
| if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { |
| QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n"); |
| tmp_idx = -1; |
| goto err_idx; |
| } |
| |
| if (test_and_set_bit(tmp_idx, qedi->task_idx_map)) |
| goto again; |
| |
| err_idx: |
| return tmp_idx; |
| } |
| |
| void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) |
| { |
| if (!test_and_clear_bit(idx, qedi->task_idx_map)) |
| QEDI_ERR(&qedi->dbg_ctx, |
| "FW task context, already cleared, tid=0x%x\n", idx); |
| } |
| |
| void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, |
| struct qedi_cmd *cmd) |
| { |
| qedi->itt_map[tid].itt = proto_itt; |
| qedi->itt_map[tid].p_cmd = cmd; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "update itt map tid=0x%x, with proto itt=0x%x\n", tid, |
| qedi->itt_map[tid].itt); |
| } |
| |
| void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) |
| { |
| u16 i; |
| |
| for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { |
| if (qedi->itt_map[i].itt == itt) { |
| *tid = i; |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "Ref itt=0x%x, found at tid=0x%x\n", |
| itt, *tid); |
| return; |
| } |
| } |
| |
| WARN_ON(1); |
| } |
| |
| void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) |
| { |
| *proto_itt = qedi->itt_map[tid].itt; |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, |
| "Get itt map tid [0x%x with proto itt[0x%x]", |
| tid, *proto_itt); |
| } |
| |
| struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) |
| { |
| struct qedi_cmd *cmd = NULL; |
| |
| if (tid >= MAX_ISCSI_TASK_ENTRIES) |
| return NULL; |
| |
| cmd = qedi->itt_map[tid].p_cmd; |
| if (cmd->task_id != tid) |
| return NULL; |
| |
| qedi->itt_map[tid].p_cmd = NULL; |
| |
| return cmd; |
| } |
| |
| static int qedi_alloc_itt(struct qedi_ctx *qedi) |
| { |
| qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, |
| sizeof(struct qedi_itt_map), GFP_KERNEL); |
| if (!qedi->itt_map) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Unable to allocate itt map array memory\n"); |
| return -ENOMEM; |
| } |
| return 0; |
| } |
| |
| static void qedi_free_itt(struct qedi_ctx *qedi) |
| { |
| kfree(qedi->itt_map); |
| } |
| |
| static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { |
| .rx_cb = qedi_ll2_rx, |
| .tx_cb = NULL, |
| }; |
| |
| static int qedi_percpu_io_thread(void *arg) |
| { |
| struct qedi_percpu_s *p = arg; |
| struct qedi_work *work, *tmp; |
| unsigned long flags; |
| LIST_HEAD(work_list); |
| |
| set_user_nice(current, -20); |
| |
| while (!kthread_should_stop()) { |
| spin_lock_irqsave(&p->p_work_lock, flags); |
| while (!list_empty(&p->work_list)) { |
| list_splice_init(&p->work_list, &work_list); |
| spin_unlock_irqrestore(&p->p_work_lock, flags); |
| |
| list_for_each_entry_safe(work, tmp, &work_list, list) { |
| list_del_init(&work->list); |
| qedi_fp_process_cqes(work); |
| if (!work->is_solicited) |
| kfree(work); |
| } |
| cond_resched(); |
| spin_lock_irqsave(&p->p_work_lock, flags); |
| } |
| set_current_state(TASK_INTERRUPTIBLE); |
| spin_unlock_irqrestore(&p->p_work_lock, flags); |
| schedule(); |
| } |
| __set_current_state(TASK_RUNNING); |
| |
| return 0; |
| } |
| |
| static int qedi_cpu_online(unsigned int cpu) |
| { |
| struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); |
| struct task_struct *thread; |
| |
| thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p, |
| cpu_to_node(cpu), |
| "qedi_thread/%d", cpu); |
| if (IS_ERR(thread)) |
| return PTR_ERR(thread); |
| |
| kthread_bind(thread, cpu); |
| p->iothread = thread; |
| wake_up_process(thread); |
| return 0; |
| } |
| |
| static int qedi_cpu_offline(unsigned int cpu) |
| { |
| struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); |
| struct qedi_work *work, *tmp; |
| struct task_struct *thread; |
| |
| spin_lock_bh(&p->p_work_lock); |
| thread = p->iothread; |
| p->iothread = NULL; |
| |
| list_for_each_entry_safe(work, tmp, &p->work_list, list) { |
| list_del_init(&work->list); |
| qedi_fp_process_cqes(work); |
| if (!work->is_solicited) |
| kfree(work); |
| } |
| |
| spin_unlock_bh(&p->p_work_lock); |
| if (thread) |
| kthread_stop(thread); |
| return 0; |
| } |
| |
| void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) |
| { |
| struct qed_ll2_params params; |
| |
| qedi_recover_all_conns(qedi); |
| |
| qedi_ops->ll2->stop(qedi->cdev); |
| qedi_ll2_free_skbs(qedi); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n", |
| qedi->ll2_mtu, mtu); |
| memset(¶ms, 0, sizeof(params)); |
| qedi->ll2_mtu = mtu; |
| params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; |
| params.drop_ttl0_packets = 0; |
| params.rx_vlan_stripping = 1; |
| ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); |
| qedi_ops->ll2->start(qedi->cdev, ¶ms); |
| } |
| |
| /* |
| * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting |
| * for gaps) for the matching absolute-pf-id of the QEDI device. |
| */ |
| static struct nvm_iscsi_block * |
| qedi_get_nvram_block(struct qedi_ctx *qedi) |
| { |
| int i; |
| u8 pf; |
| u32 flags; |
| struct nvm_iscsi_block *block; |
| |
| pf = qedi->dev_info.common.abs_pf_id; |
| block = &qedi->iscsi_image->iscsi_cfg.block[0]; |
| for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { |
| flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> |
| NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; |
| if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | |
| NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && |
| (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) |
| >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) |
| return block; |
| } |
| return NULL; |
| } |
| |
| static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) |
| { |
| struct qedi_ctx *qedi = data; |
| struct nvm_iscsi_initiator *initiator; |
| int rc = 1; |
| u32 ipv6_en, dhcp_en, ip_len; |
| struct nvm_iscsi_block *block; |
| char *fmt, *ip, *sub, *gw; |
| |
| block = qedi_get_nvram_block(qedi); |
| if (!block) |
| return 0; |
| |
| initiator = &block->initiator; |
| ipv6_en = block->generic.ctrl_flags & |
| NVM_ISCSI_CFG_GEN_IPV6_ENABLED; |
| dhcp_en = block->generic.ctrl_flags & |
| NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; |
| /* Static IP assignments. */ |
| fmt = ipv6_en ? "%pI6\n" : "%pI4\n"; |
| ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; |
| ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; |
| sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : |
| initiator->ipv4.subnet_mask.byte; |
| gw = ipv6_en ? initiator->ipv6.gateway.byte : |
| initiator->ipv4.gateway.byte; |
| /* DHCP IP adjustments. */ |
| fmt = dhcp_en ? "%s\n" : fmt; |
| if (dhcp_en) { |
| ip = ipv6_en ? "0::0" : "0.0.0.0"; |
| sub = ip; |
| gw = ip; |
| ip_len = ipv6_en ? 5 : 8; |
| } |
| |
| switch (type) { |
| case ISCSI_BOOT_ETH_IP_ADDR: |
| rc = snprintf(buf, ip_len, fmt, ip); |
| break; |
| case ISCSI_BOOT_ETH_SUBNET_MASK: |
| rc = snprintf(buf, ip_len, fmt, sub); |
| break; |
| case ISCSI_BOOT_ETH_GATEWAY: |
| rc = snprintf(buf, ip_len, fmt, gw); |
| break; |
| case ISCSI_BOOT_ETH_FLAGS: |
| rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT); |
| break; |
| case ISCSI_BOOT_ETH_INDEX: |
| rc = snprintf(buf, 3, "0\n"); |
| break; |
| case ISCSI_BOOT_ETH_MAC: |
| rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN); |
| break; |
| case ISCSI_BOOT_ETH_VLAN: |
| rc = snprintf(buf, 12, "%d\n", |
| GET_FIELD2(initiator->generic_cont0, |
| NVM_ISCSI_CFG_INITIATOR_VLAN)); |
| break; |
| case ISCSI_BOOT_ETH_ORIGIN: |
| if (dhcp_en) |
| rc = snprintf(buf, 3, "3\n"); |
| break; |
| default: |
| rc = 0; |
| break; |
| } |
| |
| return rc; |
| } |
| |
| static umode_t qedi_eth_get_attr_visibility(void *data, int type) |
| { |
| int rc = 1; |
| |
| switch (type) { |
| case ISCSI_BOOT_ETH_FLAGS: |
| case ISCSI_BOOT_ETH_MAC: |
| case ISCSI_BOOT_ETH_INDEX: |
| case ISCSI_BOOT_ETH_IP_ADDR: |
| case ISCSI_BOOT_ETH_SUBNET_MASK: |
| case ISCSI_BOOT_ETH_GATEWAY: |
| case ISCSI_BOOT_ETH_ORIGIN: |
| case ISCSI_BOOT_ETH_VLAN: |
| rc = 0444; |
| break; |
| default: |
| rc = 0; |
| break; |
| } |
| return rc; |
| } |
| |
| static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) |
| { |
| struct qedi_ctx *qedi = data; |
| struct nvm_iscsi_initiator *initiator; |
| int rc; |
| struct nvm_iscsi_block *block; |
| |
| block = qedi_get_nvram_block(qedi); |
| if (!block) |
| return 0; |
| |
| initiator = &block->initiator; |
| |
| switch (type) { |
| case ISCSI_BOOT_INI_INITIATOR_NAME: |
| rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, |
| initiator->initiator_name.byte); |
| break; |
| default: |
| rc = 0; |
| break; |
| } |
| return rc; |
| } |
| |
| static umode_t qedi_ini_get_attr_visibility(void *data, int type) |
| { |
| int rc; |
| |
| switch (type) { |
| case ISCSI_BOOT_INI_INITIATOR_NAME: |
| rc = 0444; |
| break; |
| default: |
| rc = 0; |
| break; |
| } |
| return rc; |
| } |
| |
| static ssize_t |
| qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, |
| char *buf, enum qedi_nvm_tgts idx) |
| { |
| int rc = 1; |
| u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; |
| struct nvm_iscsi_block *block; |
| char *chap_name, *chap_secret; |
| char *mchap_name, *mchap_secret; |
| |
| block = qedi_get_nvram_block(qedi); |
| if (!block) |
| goto exit_show_tgt_info; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, |
| "Port:%d, tgt_idx:%d\n", |
| GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); |
| |
| ctrl_flags = block->target[idx].ctrl_flags & |
| NVM_ISCSI_CFG_TARGET_ENABLED; |
| |
| if (!ctrl_flags) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, |
| "Target disabled\n"); |
| goto exit_show_tgt_info; |
| } |
| |
| ipv6_en = block->generic.ctrl_flags & |
| NVM_ISCSI_CFG_GEN_IPV6_ENABLED; |
| ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; |
| chap_en = block->generic.ctrl_flags & |
| NVM_ISCSI_CFG_GEN_CHAP_ENABLED; |
| chap_name = chap_en ? block->initiator.chap_name.byte : NULL; |
| chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; |
| |
| mchap_en = block->generic.ctrl_flags & |
| NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; |
| mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; |
| mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; |
| |
| switch (type) { |
| case ISCSI_BOOT_TGT_NAME: |
| rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, |
| block->target[idx].target_name.byte); |
| break; |
| case ISCSI_BOOT_TGT_IP_ADDR: |
| if (ipv6_en) |
| rc = snprintf(buf, ip_len, "%pI6\n", |
| block->target[idx].ipv6_addr.byte); |
| else |
| rc = snprintf(buf, ip_len, "%pI4\n", |
| block->target[idx].ipv4_addr.byte); |
| break; |
| case ISCSI_BOOT_TGT_PORT: |
| rc = snprintf(buf, 12, "%d\n", |
| GET_FIELD2(block->target[idx].generic_cont0, |
| NVM_ISCSI_CFG_TARGET_TCP_PORT)); |
| break; |
| case ISCSI_BOOT_TGT_LUN: |
| rc = snprintf(buf, 22, "%.*d\n", |
| block->target[idx].lun.value[1], |
| block->target[idx].lun.value[0]); |
| break; |
| case ISCSI_BOOT_TGT_CHAP_NAME: |
| rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, |
| chap_name); |
| break; |
| case ISCSI_BOOT_TGT_CHAP_SECRET: |
| rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, |
| chap_secret); |
| break; |
| case ISCSI_BOOT_TGT_REV_CHAP_NAME: |
| rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, |
| mchap_name); |
| break; |
| case ISCSI_BOOT_TGT_REV_CHAP_SECRET: |
| rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, |
| mchap_secret); |
| break; |
| case ISCSI_BOOT_TGT_FLAGS: |
| rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT); |
| break; |
| case ISCSI_BOOT_TGT_NIC_ASSOC: |
| rc = snprintf(buf, 3, "0\n"); |
| break; |
| default: |
| rc = 0; |
| break; |
| } |
| |
| exit_show_tgt_info: |
| return rc; |
| } |
| |
| static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) |
| { |
| struct qedi_ctx *qedi = data; |
| |
| return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI); |
| } |
| |
| static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) |
| { |
| struct qedi_ctx *qedi = data; |
| |
| return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC); |
| } |
| |
| static umode_t qedi_tgt_get_attr_visibility(void *data, int type) |
| { |
| int rc; |
| |
| switch (type) { |
| case ISCSI_BOOT_TGT_NAME: |
| case ISCSI_BOOT_TGT_IP_ADDR: |
| case ISCSI_BOOT_TGT_PORT: |
| case ISCSI_BOOT_TGT_LUN: |
| case ISCSI_BOOT_TGT_CHAP_NAME: |
| case ISCSI_BOOT_TGT_CHAP_SECRET: |
| case ISCSI_BOOT_TGT_REV_CHAP_NAME: |
| case ISCSI_BOOT_TGT_REV_CHAP_SECRET: |
| case ISCSI_BOOT_TGT_NIC_ASSOC: |
| case ISCSI_BOOT_TGT_FLAGS: |
| rc = 0444; |
| break; |
| default: |
| rc = 0; |
| break; |
| } |
| return rc; |
| } |
| |
| static void qedi_boot_release(void *data) |
| { |
| struct qedi_ctx *qedi = data; |
| |
| scsi_host_put(qedi->shost); |
| } |
| |
| static int qedi_get_boot_info(struct qedi_ctx *qedi) |
| { |
| int ret = 1; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Get NVM iSCSI CFG image\n"); |
| ret = qedi_ops->common->nvm_get_image(qedi->cdev, |
| QED_NVM_IMAGE_ISCSI_CFG, |
| (char *)qedi->iscsi_image, |
| sizeof(struct qedi_nvm_iscsi_image)); |
| if (ret) |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Could not get NVM image. ret = %d\n", ret); |
| |
| return ret; |
| } |
| |
| static int qedi_setup_boot_info(struct qedi_ctx *qedi) |
| { |
| struct iscsi_boot_kobj *boot_kobj; |
| |
| if (qedi_get_boot_info(qedi)) |
| return -EPERM; |
| |
| qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no); |
| if (!qedi->boot_kset) |
| goto kset_free; |
| |
| if (!scsi_host_get(qedi->shost)) |
| goto kset_free; |
| |
| boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi, |
| qedi_show_boot_tgt_pri_info, |
| qedi_tgt_get_attr_visibility, |
| qedi_boot_release); |
| if (!boot_kobj) |
| goto put_host; |
| |
| if (!scsi_host_get(qedi->shost)) |
| goto kset_free; |
| |
| boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi, |
| qedi_show_boot_tgt_sec_info, |
| qedi_tgt_get_attr_visibility, |
| qedi_boot_release); |
| if (!boot_kobj) |
| goto put_host; |
| |
| if (!scsi_host_get(qedi->shost)) |
| goto kset_free; |
| |
| boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi, |
| qedi_show_boot_ini_info, |
| qedi_ini_get_attr_visibility, |
| qedi_boot_release); |
| if (!boot_kobj) |
| goto put_host; |
| |
| if (!scsi_host_get(qedi->shost)) |
| goto kset_free; |
| |
| boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi, |
| qedi_show_boot_eth_info, |
| qedi_eth_get_attr_visibility, |
| qedi_boot_release); |
| if (!boot_kobj) |
| goto put_host; |
| |
| return 0; |
| |
| put_host: |
| scsi_host_put(qedi->shost); |
| kset_free: |
| iscsi_boot_destroy_kset(qedi->boot_kset); |
| return -ENOMEM; |
| } |
| |
| static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev, |
| pci_channel_state_t state) |
| { |
| struct qedi_ctx *qedi = pci_get_drvdata(pdev); |
| |
| QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n", |
| __func__, state); |
| |
| if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Recovery already in progress.\n"); |
| return PCI_ERS_RESULT_NONE; |
| } |
| |
| qedi_ops->common->recovery_process(qedi->cdev); |
| |
| return PCI_ERS_RESULT_CAN_RECOVER; |
| } |
| |
| static void __qedi_remove(struct pci_dev *pdev, int mode) |
| { |
| struct qedi_ctx *qedi = pci_get_drvdata(pdev); |
| int rval; |
| u16 retry = 10; |
| |
| if (mode == QEDI_MODE_NORMAL) |
| iscsi_host_remove(qedi->shost, false); |
| else if (mode == QEDI_MODE_SHUTDOWN) |
| iscsi_host_remove(qedi->shost, true); |
| |
| if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) { |
| if (qedi->tmf_thread) { |
| destroy_workqueue(qedi->tmf_thread); |
| qedi->tmf_thread = NULL; |
| } |
| |
| if (qedi->offload_thread) { |
| destroy_workqueue(qedi->offload_thread); |
| qedi->offload_thread = NULL; |
| } |
| } |
| |
| #ifdef CONFIG_DEBUG_FS |
| qedi_dbg_host_exit(&qedi->dbg_ctx); |
| #endif |
| if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) |
| qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); |
| |
| qedi_sync_free_irqs(qedi); |
| |
| if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { |
| while (retry--) { |
| rval = qedi_ops->stop(qedi->cdev); |
| if (rval < 0) |
| msleep(1000); |
| else |
| break; |
| } |
| qedi_ops->ll2->stop(qedi->cdev); |
| } |
| |
| cancel_delayed_work_sync(&qedi->recovery_work); |
| cancel_delayed_work_sync(&qedi->board_disable_work); |
| |
| qedi_free_iscsi_pf_param(qedi); |
| |
| rval = qedi_ops->common->update_drv_state(qedi->cdev, false); |
| if (rval) |
| QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n"); |
| |
| if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { |
| qedi_ops->common->slowpath_stop(qedi->cdev); |
| qedi_ops->common->remove(qedi->cdev); |
| } |
| |
| qedi_destroy_fp(qedi); |
| |
| if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) { |
| qedi_release_cid_que(qedi); |
| qedi_cm_free_mem(qedi); |
| qedi_free_uio(qedi->udev); |
| qedi_free_itt(qedi); |
| |
| if (qedi->ll2_recv_thread) { |
| kthread_stop(qedi->ll2_recv_thread); |
| qedi->ll2_recv_thread = NULL; |
| } |
| qedi_ll2_free_skbs(qedi); |
| |
| if (qedi->boot_kset) |
| iscsi_boot_destroy_kset(qedi->boot_kset); |
| |
| iscsi_host_free(qedi->shost); |
| } |
| } |
| |
| static void qedi_board_disable_work(struct work_struct *work) |
| { |
| struct qedi_ctx *qedi = |
| container_of(work, struct qedi_ctx, |
| board_disable_work.work); |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Fan failure, Unloading firmware context.\n"); |
| |
| if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags)) |
| return; |
| |
| __qedi_remove(qedi->pdev, QEDI_MODE_NORMAL); |
| } |
| |
| static void qedi_shutdown(struct pci_dev *pdev) |
| { |
| struct qedi_ctx *qedi = pci_get_drvdata(pdev); |
| |
| QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__); |
| if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags)) |
| return; |
| __qedi_remove(pdev, QEDI_MODE_SHUTDOWN); |
| } |
| |
| static int __qedi_probe(struct pci_dev *pdev, int mode) |
| { |
| struct qedi_ctx *qedi; |
| struct qed_ll2_params params; |
| u8 dp_level = 0; |
| bool is_vf = false; |
| char host_buf[16]; |
| struct qed_link_params link_params; |
| struct qed_slowpath_params sp_params; |
| struct qed_probe_params qed_params; |
| void *task_start, *task_end; |
| int rc; |
| u16 retry = 10; |
| |
| if (mode != QEDI_MODE_RECOVERY) { |
| qedi = qedi_host_alloc(pdev); |
| if (!qedi) { |
| rc = -ENOMEM; |
| goto exit_probe; |
| } |
| } else { |
| qedi = pci_get_drvdata(pdev); |
| } |
| |
| retry_probe: |
| if (mode == QEDI_MODE_RECOVERY) |
| msleep(2000); |
| |
| memset(&qed_params, 0, sizeof(qed_params)); |
| qed_params.protocol = QED_PROTOCOL_ISCSI; |
| qed_params.dp_module = qedi_qed_debug; |
| qed_params.dp_level = dp_level; |
| qed_params.is_vf = is_vf; |
| qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); |
| if (!qedi->cdev) { |
| if (mode == QEDI_MODE_RECOVERY && retry) { |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "Retry %d initialize hardware\n", retry); |
| retry--; |
| goto retry_probe; |
| } |
| |
| rc = -ENODEV; |
| QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n"); |
| goto free_host; |
| } |
| |
| set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags); |
| set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags); |
| atomic_set(&qedi->link_state, QEDI_LINK_DOWN); |
| |
| rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); |
| if (rc) |
| goto free_host; |
| |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", |
| qedi->dev_info.common.num_hwfns, |
| qedi_ops->common->get_affin_hwfn_idx(qedi->cdev)); |
| |
| rc = qedi_set_iscsi_pf_param(qedi); |
| if (rc) { |
| rc = -ENOMEM; |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Set iSCSI pf param fail\n"); |
| goto free_host; |
| } |
| |
| qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); |
| |
| rc = qedi_prepare_fp(qedi); |
| if (rc) { |
| QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n"); |
| goto free_pf_params; |
| } |
| |
| /* Start the Slowpath-process */ |
| memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); |
| sp_params.int_mode = QED_INT_MODE_MSIX; |
| sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; |
| sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; |
| sp_params.drv_rev = QEDI_DRIVER_REV_VER; |
| sp_params.drv_eng = QEDI_DRIVER_ENG_VER; |
| strscpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE); |
| rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); |
| if (rc) { |
| QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n"); |
| goto stop_hw; |
| } |
| |
| /* update_pf_params needs to be called before and after slowpath |
| * start |
| */ |
| qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); |
| |
| rc = qedi_setup_int(qedi); |
| if (rc) |
| goto stop_iscsi_func; |
| |
| qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); |
| |
| /* Learn information crucial for qedi to progress */ |
| rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); |
| if (rc) |
| goto stop_iscsi_func; |
| |
| /* Record BDQ producer doorbell addresses */ |
| qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; |
| qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
| "BDQ primary_prod=%p secondary_prod=%p.\n", |
| qedi->bdq_primary_prod, |
| qedi->bdq_secondary_prod); |
| |
| /* |
| * We need to write the number of BDs in the BDQ we've preallocated so |
| * the f/w will do a prefetch and we'll get an unsolicited CQE when a |
| * packet arrives. |
| */ |
| qedi->bdq_prod_idx = QEDI_BDQ_NUM; |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
| "Writing %d to primary and secondary BDQ doorbell registers.\n", |
| qedi->bdq_prod_idx); |
| writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); |
| readw(qedi->bdq_primary_prod); |
| writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); |
| readw(qedi->bdq_secondary_prod); |
| |
| ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac); |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n", |
| qedi->mac); |
| |
| snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no); |
| qedi_ops->common->set_name(qedi->cdev, host_buf); |
| |
| qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); |
| |
| memset(¶ms, 0, sizeof(params)); |
| params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; |
| qedi->ll2_mtu = DEF_PATH_MTU; |
| params.drop_ttl0_packets = 0; |
| params.rx_vlan_stripping = 1; |
| ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); |
| |
| if (mode != QEDI_MODE_RECOVERY) { |
| /* set up rx path */ |
| INIT_LIST_HEAD(&qedi->ll2_skb_list); |
| spin_lock_init(&qedi->ll2_lock); |
| /* start qedi context */ |
| spin_lock_init(&qedi->hba_lock); |
| spin_lock_init(&qedi->task_idx_lock); |
| mutex_init(&qedi->stats_lock); |
| } |
| qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); |
| qedi_ops->ll2->start(qedi->cdev, ¶ms); |
| |
| if (mode != QEDI_MODE_RECOVERY) { |
| qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, |
| (void *)qedi, |
| "qedi_ll2_thread"); |
| } |
| |
| rc = qedi_ops->start(qedi->cdev, &qedi->tasks, |
| qedi, qedi_iscsi_event_cb); |
| if (rc) { |
| rc = -ENODEV; |
| QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n"); |
| goto stop_slowpath; |
| } |
| |
| task_start = qedi_get_task_mem(&qedi->tasks, 0); |
| task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, |
| "Task context start=%p, end=%p block_size=%u.\n", |
| task_start, task_end, qedi->tasks.size); |
| |
| memset(&link_params, 0, sizeof(link_params)); |
| link_params.link_up = true; |
| rc = qedi_ops->common->set_link(qedi->cdev, &link_params); |
| if (rc) { |
| QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n"); |
| atomic_set(&qedi->link_state, QEDI_LINK_DOWN); |
| } |
| |
| #ifdef CONFIG_DEBUG_FS |
| qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops, |
| qedi_dbg_fops); |
| #endif |
| QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, |
| "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n", |
| QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, |
| FW_REVISION_VERSION, FW_ENGINEERING_VERSION); |
| |
| if (mode == QEDI_MODE_NORMAL) { |
| if (iscsi_host_add(qedi->shost, &pdev->dev)) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Could not add iscsi host\n"); |
| rc = -ENOMEM; |
| goto remove_host; |
| } |
| |
| /* Allocate uio buffers */ |
| rc = qedi_alloc_uio_rings(qedi); |
| if (rc) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "UIO alloc ring failed err=%d\n", rc); |
| goto remove_host; |
| } |
| |
| rc = qedi_init_uio(qedi); |
| if (rc) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "UIO init failed, err=%d\n", rc); |
| goto free_uio; |
| } |
| |
| /* host the array on iscsi_conn */ |
| rc = qedi_setup_cid_que(qedi); |
| if (rc) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Could not setup cid que\n"); |
| goto free_uio; |
| } |
| |
| rc = qedi_cm_alloc_mem(qedi); |
| if (rc) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Could not alloc cm memory\n"); |
| goto free_cid_que; |
| } |
| |
| rc = qedi_alloc_itt(qedi); |
| if (rc) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Could not alloc itt memory\n"); |
| goto free_cid_que; |
| } |
| |
| sprintf(host_buf, "host_%d", qedi->shost->host_no); |
| qedi->tmf_thread = create_singlethread_workqueue(host_buf); |
| if (!qedi->tmf_thread) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Unable to start tmf thread!\n"); |
| rc = -ENODEV; |
| goto free_cid_que; |
| } |
| |
| sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no); |
| qedi->offload_thread = create_workqueue(host_buf); |
| if (!qedi->offload_thread) { |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Unable to start offload thread!\n"); |
| rc = -ENODEV; |
| goto free_tmf_thread; |
| } |
| |
| INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler); |
| INIT_DELAYED_WORK(&qedi->board_disable_work, |
| qedi_board_disable_work); |
| |
| /* F/w needs 1st task context memory entry for performance */ |
| set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map); |
| atomic_set(&qedi->num_offloads, 0); |
| |
| if (qedi_setup_boot_info(qedi)) |
| QEDI_ERR(&qedi->dbg_ctx, |
| "No iSCSI boot target configured\n"); |
| |
| rc = qedi_ops->common->update_drv_state(qedi->cdev, true); |
| if (rc) |
| QEDI_ERR(&qedi->dbg_ctx, |
| "Failed to send drv state to MFW\n"); |
| |
| } |
| |
| return 0; |
| |
| free_tmf_thread: |
| destroy_workqueue(qedi->tmf_thread); |
| free_cid_que: |
| qedi_release_cid_que(qedi); |
| free_uio: |
| qedi_free_uio(qedi->udev); |
| remove_host: |
| #ifdef CONFIG_DEBUG_FS |
| qedi_dbg_host_exit(&qedi->dbg_ctx); |
| #endif |
| iscsi_host_remove(qedi->shost, false); |
| stop_iscsi_func: |
| qedi_ops->stop(qedi->cdev); |
| stop_slowpath: |
| qedi_ops->common->slowpath_stop(qedi->cdev); |
| stop_hw: |
| qedi_ops->common->remove(qedi->cdev); |
| free_pf_params: |
| qedi_free_iscsi_pf_param(qedi); |
| free_host: |
| iscsi_host_free(qedi->shost); |
| exit_probe: |
| return rc; |
| } |
| |
| static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session) |
| { |
| struct iscsi_session *session = cls_session->dd_data; |
| struct iscsi_conn *conn = session->leadconn; |
| struct qedi_conn *qedi_conn = conn->dd_data; |
| |
| iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED); |
| } |
| |
| static void qedi_recovery_handler(struct work_struct *work) |
| { |
| struct qedi_ctx *qedi = |
| container_of(work, struct qedi_ctx, recovery_work.work); |
| |
| iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery); |
| |
| /* Call common_ops->recovery_prolog to allow the MFW to quiesce |
| * any PCI transactions. |
| */ |
| qedi_ops->common->recovery_prolog(qedi->cdev); |
| |
| __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY); |
| __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY); |
| clear_bit(QEDI_IN_RECOVERY, &qedi->flags); |
| } |
| |
| static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
| { |
| return __qedi_probe(pdev, QEDI_MODE_NORMAL); |
| } |
| |
| static void qedi_remove(struct pci_dev *pdev) |
| { |
| __qedi_remove(pdev, QEDI_MODE_NORMAL); |
| } |
| |
| static struct pci_device_id qedi_pci_tbl[] = { |
| { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, |
| { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, |
| { 0 }, |
| }; |
| MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); |
| |
| static enum cpuhp_state qedi_cpuhp_state; |
| |
| static struct pci_error_handlers qedi_err_handler = { |
| .error_detected = qedi_io_error_detected, |
| }; |
| |
| static struct pci_driver qedi_pci_driver = { |
| .name = QEDI_MODULE_NAME, |
| .id_table = qedi_pci_tbl, |
| .probe = qedi_probe, |
| .remove = qedi_remove, |
| .shutdown = qedi_shutdown, |
| .err_handler = &qedi_err_handler, |
| }; |
| |
| static int __init qedi_init(void) |
| { |
| struct qedi_percpu_s *p; |
| int cpu, rc = 0; |
| |
| qedi_ops = qed_get_iscsi_ops(); |
| if (!qedi_ops) { |
| QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n"); |
| return -EINVAL; |
| } |
| |
| #ifdef CONFIG_DEBUG_FS |
| qedi_dbg_init("qedi"); |
| #endif |
| |
| qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport); |
| if (!qedi_scsi_transport) { |
| QEDI_ERR(NULL, "Could not register qedi transport"); |
| rc = -ENOMEM; |
| goto exit_qedi_init_1; |
| } |
| |
| for_each_possible_cpu(cpu) { |
| p = &per_cpu(qedi_percpu, cpu); |
| INIT_LIST_HEAD(&p->work_list); |
| spin_lock_init(&p->p_work_lock); |
| p->iothread = NULL; |
| } |
| |
| rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online", |
| qedi_cpu_online, qedi_cpu_offline); |
| if (rc < 0) |
| goto exit_qedi_init_2; |
| qedi_cpuhp_state = rc; |
| |
| rc = pci_register_driver(&qedi_pci_driver); |
| if (rc) { |
| QEDI_ERR(NULL, "Failed to register driver\n"); |
| goto exit_qedi_hp; |
| } |
| |
| return 0; |
| |
| exit_qedi_hp: |
| cpuhp_remove_state(qedi_cpuhp_state); |
| exit_qedi_init_2: |
| iscsi_unregister_transport(&qedi_iscsi_transport); |
| exit_qedi_init_1: |
| #ifdef CONFIG_DEBUG_FS |
| qedi_dbg_exit(); |
| #endif |
| qed_put_iscsi_ops(); |
| return rc; |
| } |
| |
| static void __exit qedi_cleanup(void) |
| { |
| pci_unregister_driver(&qedi_pci_driver); |
| cpuhp_remove_state(qedi_cpuhp_state); |
| iscsi_unregister_transport(&qedi_iscsi_transport); |
| |
| #ifdef CONFIG_DEBUG_FS |
| qedi_dbg_exit(); |
| #endif |
| qed_put_iscsi_ops(); |
| } |
| |
| MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module"); |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("QLogic Corporation"); |
| MODULE_VERSION(QEDI_MODULE_VERSION); |
| module_init(qedi_init); |
| module_exit(qedi_cleanup); |