// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2015 Linaro Ltd. * Copyright (c) 2015 Hisilicon Limited. */ #include "hisi_sas.h" #define DRV_NAME "hisi_sas" #define DEV_IS_GONE(dev) \ ((!dev) || (dev->dev_type == SAS_PHY_UNUSED)) static int hisi_sas_softreset_ata_disk(struct domain_device *device); static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, void *funcdata); static void hisi_sas_release_task(struct hisi_hba *hisi_hba, struct domain_device *device); static void hisi_sas_dev_gone(struct domain_device *device); struct hisi_sas_internal_abort_data { bool rst_ha_timeout; /* reset the HA for timeout */ }; u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis, int direction) { switch (fis->command) { case ATA_CMD_FPDMA_WRITE: case ATA_CMD_FPDMA_READ: case ATA_CMD_FPDMA_RECV: case ATA_CMD_FPDMA_SEND: case ATA_CMD_NCQ_NON_DATA: return HISI_SAS_SATA_PROTOCOL_FPDMA; case ATA_CMD_DOWNLOAD_MICRO: case ATA_CMD_ID_ATA: case ATA_CMD_PMP_READ: case ATA_CMD_READ_LOG_EXT: case ATA_CMD_PIO_READ: case ATA_CMD_PIO_READ_EXT: case ATA_CMD_PMP_WRITE: case ATA_CMD_WRITE_LOG_EXT: case ATA_CMD_PIO_WRITE: case ATA_CMD_PIO_WRITE_EXT: return HISI_SAS_SATA_PROTOCOL_PIO; case ATA_CMD_DSM: case ATA_CMD_DOWNLOAD_MICRO_DMA: case ATA_CMD_PMP_READ_DMA: case ATA_CMD_PMP_WRITE_DMA: case ATA_CMD_READ: case ATA_CMD_READ_EXT: case ATA_CMD_READ_LOG_DMA_EXT: case ATA_CMD_READ_STREAM_DMA_EXT: case ATA_CMD_TRUSTED_RCV_DMA: case ATA_CMD_TRUSTED_SND_DMA: case ATA_CMD_WRITE: case ATA_CMD_WRITE_EXT: case ATA_CMD_WRITE_FUA_EXT: case ATA_CMD_WRITE_QUEUED: case ATA_CMD_WRITE_LOG_DMA_EXT: case ATA_CMD_WRITE_STREAM_DMA_EXT: case ATA_CMD_ZAC_MGMT_IN: return HISI_SAS_SATA_PROTOCOL_DMA; case ATA_CMD_CHK_POWER: case ATA_CMD_DEV_RESET: case ATA_CMD_EDD: case ATA_CMD_FLUSH: case ATA_CMD_FLUSH_EXT: case ATA_CMD_VERIFY: case ATA_CMD_VERIFY_EXT: case ATA_CMD_SET_FEATURES: case ATA_CMD_STANDBY: case ATA_CMD_STANDBYNOW1: case ATA_CMD_ZAC_MGMT_OUT: return HISI_SAS_SATA_PROTOCOL_NONDATA; case ATA_CMD_SET_MAX: switch (fis->features) { case ATA_SET_MAX_PASSWD: case ATA_SET_MAX_LOCK: return HISI_SAS_SATA_PROTOCOL_PIO; case ATA_SET_MAX_PASSWD_DMA: case ATA_SET_MAX_UNLOCK_DMA: return HISI_SAS_SATA_PROTOCOL_DMA; default: return HISI_SAS_SATA_PROTOCOL_NONDATA; } default: { if (direction == DMA_NONE) return HISI_SAS_SATA_PROTOCOL_NONDATA; return HISI_SAS_SATA_PROTOCOL_PIO; } } } EXPORT_SYMBOL_GPL(hisi_sas_get_ata_protocol); void hisi_sas_sata_done(struct sas_task *task, struct hisi_sas_slot *slot) { struct task_status_struct *ts = &task->task_status; struct ata_task_resp *resp = (struct ata_task_resp *)ts->buf; struct hisi_sas_status_buffer *status_buf = hisi_sas_status_buf_addr_mem(slot); u8 *iu = &status_buf->iu[0]; struct dev_to_host_fis *d2h = (struct dev_to_host_fis *)iu; resp->frame_len = sizeof(struct dev_to_host_fis); memcpy(&resp->ending_fis[0], d2h, sizeof(struct dev_to_host_fis)); ts->buf_valid_size = sizeof(*resp); } EXPORT_SYMBOL_GPL(hisi_sas_sata_done); /* * This function assumes linkrate mask fits in 8 bits, which it * does for all HW versions supported. */ u8 hisi_sas_get_prog_phy_linkrate_mask(enum sas_linkrate max) { u8 rate = 0; int i; max -= SAS_LINK_RATE_1_5_GBPS; for (i = 0; i <= max; i++) rate |= 1 << (i * 2); return rate; } EXPORT_SYMBOL_GPL(hisi_sas_get_prog_phy_linkrate_mask); static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device) { return device->port->ha->lldd_ha; } struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port) { return container_of(sas_port, struct hisi_sas_port, sas_port); } EXPORT_SYMBOL_GPL(to_hisi_sas_port); void hisi_sas_stop_phys(struct hisi_hba *hisi_hba) { int phy_no; for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) hisi_sas_phy_enable(hisi_hba, phy_no, 0); } EXPORT_SYMBOL_GPL(hisi_sas_stop_phys); static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx) { void *bitmap = hisi_hba->slot_index_tags; __clear_bit(slot_idx, bitmap); } static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx) { if (hisi_hba->hw->slot_index_alloc || slot_idx < HISI_SAS_RESERVED_IPTT) { spin_lock(&hisi_hba->lock); hisi_sas_slot_index_clear(hisi_hba, slot_idx); spin_unlock(&hisi_hba->lock); } } static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx) { void *bitmap = hisi_hba->slot_index_tags; __set_bit(slot_idx, bitmap); } static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, struct request *rq) { int index; void *bitmap = hisi_hba->slot_index_tags; if (rq) return rq->tag + HISI_SAS_RESERVED_IPTT; spin_lock(&hisi_hba->lock); index = find_next_zero_bit(bitmap, HISI_SAS_RESERVED_IPTT, hisi_hba->last_slot_index + 1); if (index >= HISI_SAS_RESERVED_IPTT) { index = find_next_zero_bit(bitmap, HISI_SAS_RESERVED_IPTT, 0); if (index >= HISI_SAS_RESERVED_IPTT) { spin_unlock(&hisi_hba->lock); return -SAS_QUEUE_FULL; } } hisi_sas_slot_index_set(hisi_hba, index); hisi_hba->last_slot_index = index; spin_unlock(&hisi_hba->lock); return index; } void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, struct hisi_sas_slot *slot, bool need_lock) { int device_id = slot->device_id; struct hisi_sas_device *sas_dev = &hisi_hba->devices[device_id]; if (task) { struct device *dev = hisi_hba->dev; if (!task->lldd_task) return; task->lldd_task = NULL; if (!sas_protocol_ata(task->task_proto)) { if (slot->n_elem) { if (task->task_proto & SAS_PROTOCOL_SSP) dma_unmap_sg(dev, task->scatter, task->num_scatter, task->data_dir); else dma_unmap_sg(dev, &task->smp_task.smp_req, 1, DMA_TO_DEVICE); } if (slot->n_elem_dif) { struct sas_ssp_task *ssp_task = &task->ssp_task; struct scsi_cmnd *scsi_cmnd = ssp_task->cmd; dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd), scsi_prot_sg_count(scsi_cmnd), task->data_dir); } } } if (need_lock) { spin_lock(&sas_dev->lock); list_del_init(&slot->entry); spin_unlock(&sas_dev->lock); } else { list_del_init(&slot->entry); } memset(slot, 0, offsetof(struct hisi_sas_slot, buf)); hisi_sas_slot_index_free(hisi_hba, slot->idx); } EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free); static void hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot) { hisi_hba->hw->prep_smp(hisi_hba, slot); } static void hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot) { hisi_hba->hw->prep_ssp(hisi_hba, slot); } static void hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot) { hisi_hba->hw->prep_stp(hisi_hba, slot); } static void hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot) { hisi_hba->hw->prep_abort(hisi_hba, slot); } static void hisi_sas_dma_unmap(struct hisi_hba *hisi_hba, struct sas_task *task, int n_elem) { struct device *dev = hisi_hba->dev; if (!sas_protocol_ata(task->task_proto) && n_elem) { if (task->num_scatter) { dma_unmap_sg(dev, task->scatter, task->num_scatter, task->data_dir); } else if (task->task_proto & SAS_PROTOCOL_SMP) { dma_unmap_sg(dev, &task->smp_task.smp_req, 1, DMA_TO_DEVICE); } } } static int hisi_sas_dma_map(struct hisi_hba *hisi_hba, struct sas_task *task, int *n_elem) { struct device *dev = hisi_hba->dev; int rc; if (sas_protocol_ata(task->task_proto)) { *n_elem = task->num_scatter; } else { unsigned int req_len; if (task->num_scatter) { *n_elem = dma_map_sg(dev, task->scatter, task->num_scatter, task->data_dir); if (!*n_elem) { rc = -ENOMEM; goto prep_out; } } else if (task->task_proto & SAS_PROTOCOL_SMP) { *n_elem = dma_map_sg(dev, &task->smp_task.smp_req, 1, DMA_TO_DEVICE); if (!*n_elem) { rc = -ENOMEM; goto prep_out; } req_len = sg_dma_len(&task->smp_task.smp_req); if (req_len & 0x3) { rc = -EINVAL; goto err_out_dma_unmap; } } } if (*n_elem > HISI_SAS_SGE_PAGE_CNT) { dev_err(dev, "task prep: n_elem(%d) > HISI_SAS_SGE_PAGE_CNT\n", *n_elem); rc = -EINVAL; goto err_out_dma_unmap; } return 0; err_out_dma_unmap: /* It would be better to call dma_unmap_sg() here, but it's messy */ hisi_sas_dma_unmap(hisi_hba, task, *n_elem); prep_out: return rc; } static void hisi_sas_dif_dma_unmap(struct hisi_hba *hisi_hba, struct sas_task *task, int n_elem_dif) { struct device *dev = hisi_hba->dev; if (n_elem_dif) { struct sas_ssp_task *ssp_task = &task->ssp_task; struct scsi_cmnd *scsi_cmnd = ssp_task->cmd; dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd), scsi_prot_sg_count(scsi_cmnd), task->data_dir); } } static int hisi_sas_dif_dma_map(struct hisi_hba *hisi_hba, int *n_elem_dif, struct sas_task *task) { struct device *dev = hisi_hba->dev; struct sas_ssp_task *ssp_task; struct scsi_cmnd *scsi_cmnd; int rc; if (task->num_scatter) { ssp_task = &task->ssp_task; scsi_cmnd = ssp_task->cmd; if (scsi_prot_sg_count(scsi_cmnd)) { *n_elem_dif = dma_map_sg(dev, scsi_prot_sglist(scsi_cmnd), scsi_prot_sg_count(scsi_cmnd), task->data_dir); if (!*n_elem_dif) return -ENOMEM; if (*n_elem_dif > HISI_SAS_SGE_DIF_PAGE_CNT) { dev_err(dev, "task prep: n_elem_dif(%d) too large\n", *n_elem_dif); rc = -EINVAL; goto err_out_dif_dma_unmap; } } } return 0; err_out_dif_dma_unmap: dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd), scsi_prot_sg_count(scsi_cmnd), task->data_dir); return rc; } static void hisi_sas_task_deliver(struct hisi_hba *hisi_hba, struct hisi_sas_slot *slot, struct hisi_sas_dq *dq, struct hisi_sas_device *sas_dev) { struct hisi_sas_cmd_hdr *cmd_hdr_base; int dlvry_queue_slot, dlvry_queue; struct sas_task *task = slot->task; int wr_q_index; spin_lock(&dq->lock); wr_q_index = dq->wr_point; dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS; list_add_tail(&slot->delivery, &dq->list); spin_unlock(&dq->lock); spin_lock(&sas_dev->lock); list_add_tail(&slot->entry, &sas_dev->list); spin_unlock(&sas_dev->lock); dlvry_queue = dq->id; dlvry_queue_slot = wr_q_index; slot->device_id = sas_dev->device_id; slot->dlvry_queue = dlvry_queue; slot->dlvry_queue_slot = dlvry_queue_slot; cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue]; slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot]; task->lldd_task = slot; memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr)); memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ); memset(hisi_sas_status_buf_addr_mem(slot), 0, sizeof(struct hisi_sas_err_record)); switch (task->task_proto) { case SAS_PROTOCOL_SMP: hisi_sas_task_prep_smp(hisi_hba, slot); break; case SAS_PROTOCOL_SSP: hisi_sas_task_prep_ssp(hisi_hba, slot); break; case SAS_PROTOCOL_SATA: case SAS_PROTOCOL_STP: case SAS_PROTOCOL_STP_ALL: hisi_sas_task_prep_ata(hisi_hba, slot); break; case SAS_PROTOCOL_INTERNAL_ABORT: hisi_sas_task_prep_abort(hisi_hba, slot); break; default: return; } /* Make slot memories observable before marking as ready */ smp_wmb(); WRITE_ONCE(slot->ready, 1); spin_lock(&dq->lock); hisi_hba->hw->start_delivery(dq); spin_unlock(&dq->lock); } static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) { int n_elem = 0, n_elem_dif = 0; struct domain_device *device = task->dev; struct asd_sas_port *sas_port = device->port; struct hisi_sas_device *sas_dev = device->lldd_dev; bool internal_abort = sas_is_internal_abort(task); struct hisi_sas_dq *dq = NULL; struct hisi_sas_port *port; struct hisi_hba *hisi_hba; struct hisi_sas_slot *slot; struct request *rq = NULL; struct device *dev; int rc; if (!sas_port) { struct task_status_struct *ts = &task->task_status; ts->resp = SAS_TASK_UNDELIVERED; ts->stat = SAS_PHY_DOWN; /* * libsas will use dev->port, should * not call task_done for sata */ if (device->dev_type != SAS_SATA_DEV && !internal_abort) task->task_done(task); return -ECOMM; } hisi_hba = dev_to_hisi_hba(device); dev = hisi_hba->dev; switch (task->task_proto) { case SAS_PROTOCOL_SSP: case SAS_PROTOCOL_SMP: case SAS_PROTOCOL_SATA: case SAS_PROTOCOL_STP: case SAS_PROTOCOL_STP_ALL: if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) { if (!gfpflags_allow_blocking(gfp_flags)) return -EINVAL; down(&hisi_hba->sem); up(&hisi_hba->sem); } if (DEV_IS_GONE(sas_dev)) { if (sas_dev) dev_info(dev, "task prep: device %d not ready\n", sas_dev->device_id); else dev_info(dev, "task prep: device %016llx not ready\n", SAS_ADDR(device->sas_addr)); return -ECOMM; } port = to_hisi_sas_port(sas_port); if (!port->port_attached) { dev_info(dev, "task prep: %s port%d not attach device\n", dev_is_sata(device) ? "SATA/STP" : "SAS", device->port->id); return -ECOMM; } rq = sas_task_find_rq(task); if (rq) { unsigned int dq_index; u32 blk_tag; blk_tag = blk_mq_unique_tag(rq); dq_index = blk_mq_unique_tag_to_hwq(blk_tag); dq = &hisi_hba->dq[dq_index]; } else { int queue; if (hisi_hba->iopoll_q_cnt) { /* * Use interrupt queue (queue 0) to deliver and complete * internal IOs of libsas or libata when there is at least * one iopoll queue */ queue = 0; } else { struct Scsi_Host *shost = hisi_hba->shost; struct blk_mq_queue_map *qmap = &shost->tag_set.map[HCTX_TYPE_DEFAULT]; queue = qmap->mq_map[raw_smp_processor_id()]; } dq = &hisi_hba->dq[queue]; } break; case SAS_PROTOCOL_INTERNAL_ABORT: if (!hisi_hba->hw->prep_abort) return TMF_RESP_FUNC_FAILED; if (test_bit(HISI_SAS_HW_FAULT_BIT, &hisi_hba->flags)) return -EIO; hisi_hba = dev_to_hisi_hba(device); if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) return -EINVAL; port = to_hisi_sas_port(sas_port); dq = &hisi_hba->dq[task->abort_task.qid]; break; default: dev_err(hisi_hba->dev, "task prep: unknown/unsupported proto (0x%x)\n", task->task_proto); return -EINVAL; } rc = hisi_sas_dma_map(hisi_hba, task, &n_elem); if (rc < 0) goto prep_out; if (!sas_protocol_ata(task->task_proto)) { rc = hisi_sas_dif_dma_map(hisi_hba, &n_elem_dif, task); if (rc < 0) goto err_out_dma_unmap; } if (!internal_abort && hisi_hba->hw->slot_index_alloc) rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device); else rc = hisi_sas_slot_index_alloc(hisi_hba, rq); if (rc < 0) goto err_out_dif_dma_unmap; slot = &hisi_hba->slot_info[rc]; slot->n_elem = n_elem; slot->n_elem_dif = n_elem_dif; slot->task = task; slot->port = port; slot->tmf = task->tmf; slot->is_internal = !!task->tmf || internal_abort; /* protect task_prep and start_delivery sequence */ hisi_sas_task_deliver(hisi_hba, slot, dq, sas_dev); return 0; err_out_dif_dma_unmap: if (!sas_protocol_ata(task->task_proto)) hisi_sas_dif_dma_unmap(hisi_hba, task, n_elem_dif); err_out_dma_unmap: hisi_sas_dma_unmap(hisi_hba, task, n_elem); prep_out: dev_err(dev, "task exec: failed[%d]!\n", rc); return rc; } static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no, gfp_t gfp_flags) { struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; struct asd_sas_phy *sas_phy = &phy->sas_phy; if (!phy->phy_attached) return; sas_notify_phy_event(sas_phy, PHYE_OOB_DONE, gfp_flags); if (sas_phy->phy) { struct sas_phy *sphy = sas_phy->phy; sphy->negotiated_linkrate = sas_phy->linkrate; sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; sphy->maximum_linkrate_hw = hisi_hba->hw->phy_get_max_linkrate(); if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) sphy->minimum_linkrate = phy->minimum_linkrate; if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) sphy->maximum_linkrate = phy->maximum_linkrate; } if (phy->phy_type & PORT_TYPE_SAS) { struct sas_identify_frame *id; id = (struct sas_identify_frame *)phy->frame_rcvd; id->dev_type = phy->identify.device_type; id->initiator_bits = SAS_PROTOCOL_ALL; id->target_bits = phy->identify.target_port_protocols; } else if (phy->phy_type & PORT_TYPE_SATA) { /* Nothing */ } sas_phy->frame_rcvd_size = phy->frame_rcvd_size; sas_notify_port_event(sas_phy, PORTE_BYTES_DMAED, gfp_flags); } static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device) { struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct hisi_sas_device *sas_dev = NULL; int last = hisi_hba->last_dev_id; int first = (hisi_hba->last_dev_id + 1) % HISI_SAS_MAX_DEVICES; int i; spin_lock(&hisi_hba->lock); for (i = first; i != last; i %= HISI_SAS_MAX_DEVICES) { if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) { int queue = i % hisi_hba->queue_count; struct hisi_sas_dq *dq = &hisi_hba->dq[queue]; hisi_hba->devices[i].device_id = i; sas_dev = &hisi_hba->devices[i]; sas_dev->dev_status = HISI_SAS_DEV_INIT; sas_dev->dev_type = device->dev_type; sas_dev->hisi_hba = hisi_hba; sas_dev->sas_device = device; sas_dev->dq = dq; spin_lock_init(&sas_dev->lock); INIT_LIST_HEAD(&hisi_hba->devices[i].list); break; } i++; } hisi_hba->last_dev_id = i; spin_unlock(&hisi_hba->lock); return sas_dev; } static void hisi_sas_sync_poll_cq(struct hisi_sas_cq *cq) { /* make sure CQ entries being processed are processed to completion */ spin_lock(&cq->poll_lock); spin_unlock(&cq->poll_lock); } static bool hisi_sas_queue_is_poll(struct hisi_sas_cq *cq) { struct hisi_hba *hisi_hba = cq->hisi_hba; if (cq->id < hisi_hba->queue_count - hisi_hba->iopoll_q_cnt) return false; return true; } static void hisi_sas_sync_cq(struct hisi_sas_cq *cq) { if (hisi_sas_queue_is_poll(cq)) hisi_sas_sync_poll_cq(cq); else synchronize_irq(cq->irq_no); } void hisi_sas_sync_poll_cqs(struct hisi_hba *hisi_hba) { int i; for (i = 0; i < hisi_hba->queue_count; i++) { struct hisi_sas_cq *cq = &hisi_hba->cq[i]; if (hisi_sas_queue_is_poll(cq)) hisi_sas_sync_poll_cq(cq); } } EXPORT_SYMBOL_GPL(hisi_sas_sync_poll_cqs); void hisi_sas_sync_cqs(struct hisi_hba *hisi_hba) { int i; for (i = 0; i < hisi_hba->queue_count; i++) { struct hisi_sas_cq *cq = &hisi_hba->cq[i]; hisi_sas_sync_cq(cq); } } EXPORT_SYMBOL_GPL(hisi_sas_sync_cqs); static void hisi_sas_tmf_aborted(struct sas_task *task) { struct hisi_sas_slot *slot = task->lldd_task; struct domain_device *device = task->dev; struct hisi_sas_device *sas_dev = device->lldd_dev; struct hisi_hba *hisi_hba = sas_dev->hisi_hba; if (slot) { struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue]; /* * sync irq or poll queue to avoid free'ing task * before using task in IO completion */ hisi_sas_sync_cq(cq); slot->task = NULL; } } #define HISI_SAS_DISK_RECOVER_CNT 3 static int hisi_sas_init_device(struct domain_device *device) { int rc = TMF_RESP_FUNC_COMPLETE; struct scsi_lun lun; int retry = HISI_SAS_DISK_RECOVER_CNT; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); switch (device->dev_type) { case SAS_END_DEVICE: int_to_scsilun(0, &lun); while (retry-- > 0) { rc = sas_abort_task_set(device, lun.scsi_lun); if (rc == TMF_RESP_FUNC_COMPLETE) { hisi_sas_release_task(hisi_hba, device); break; } } break; case SAS_SATA_DEV: case SAS_SATA_PM: case SAS_SATA_PM_PORT: case SAS_SATA_PENDING: /* * If an expander is swapped when a SATA disk is attached then * we should issue a hard reset to clear previous affiliation * of STP target port, see SPL (chapter 6.19.4). * * However we don't need to issue a hard reset here for these * reasons: * a. When probing the device, libsas/libata already issues a * hard reset in sas_probe_sata() -> ata_sas_async_probe(). * Note that in hisi_sas_debug_I_T_nexus_reset() we take care * to issue a hard reset by checking the dev status (== INIT). * b. When resetting the controller, this is simply unnecessary. */ while (retry-- > 0) { rc = hisi_sas_softreset_ata_disk(device); if (!rc) break; } break; default: break; } return rc; } int hisi_sas_slave_alloc(struct scsi_device *sdev) { struct domain_device *ddev = sdev_to_domain_dev(sdev); struct hisi_sas_device *sas_dev = ddev->lldd_dev; int rc; rc = sas_slave_alloc(sdev); if (rc) return rc; rc = hisi_sas_init_device(ddev); if (rc) return rc; sas_dev->dev_status = HISI_SAS_DEV_NORMAL; return 0; } EXPORT_SYMBOL_GPL(hisi_sas_slave_alloc); static int hisi_sas_dev_found(struct domain_device *device) { struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct domain_device *parent_dev = device->parent; struct hisi_sas_device *sas_dev; struct device *dev = hisi_hba->dev; int rc; if (hisi_hba->hw->alloc_dev) sas_dev = hisi_hba->hw->alloc_dev(device); else sas_dev = hisi_sas_alloc_dev(device); if (!sas_dev) { dev_err(dev, "fail alloc dev: max support %d devices\n", HISI_SAS_MAX_DEVICES); return -EINVAL; } device->lldd_dev = sas_dev; hisi_hba->hw->setup_itct(hisi_hba, sas_dev); if (parent_dev && dev_is_expander(parent_dev->dev_type)) { int phy_no; phy_no = sas_find_attached_phy_id(&parent_dev->ex_dev, device); if (phy_no < 0) { dev_info(dev, "dev found: no attached " "dev:%016llx at ex:%016llx\n", SAS_ADDR(device->sas_addr), SAS_ADDR(parent_dev->sas_addr)); rc = phy_no; goto err_out; } } dev_info(dev, "dev[%d:%x] found\n", sas_dev->device_id, sas_dev->dev_type); return 0; err_out: hisi_sas_dev_gone(device); return rc; } int hisi_sas_slave_configure(struct scsi_device *sdev) { struct domain_device *dev = sdev_to_domain_dev(sdev); int ret = sas_slave_configure(sdev); if (ret) return ret; if (!dev_is_sata(dev)) sas_change_queue_depth(sdev, 64); return 0; } EXPORT_SYMBOL_GPL(hisi_sas_slave_configure); void hisi_sas_scan_start(struct Scsi_Host *shost) { struct hisi_hba *hisi_hba = shost_priv(shost); hisi_hba->hw->phys_init(hisi_hba); } EXPORT_SYMBOL_GPL(hisi_sas_scan_start); int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time) { struct hisi_hba *hisi_hba = shost_priv(shost); struct sas_ha_struct *sha = &hisi_hba->sha; /* Wait for PHY up interrupt to occur */ if (time < HZ) return 0; sas_drain_work(sha); return 1; } EXPORT_SYMBOL_GPL(hisi_sas_scan_finished); static void hisi_sas_phyup_work_common(struct work_struct *work, enum hisi_sas_phy_event event) { struct hisi_sas_phy *phy = container_of(work, typeof(*phy), works[event]); struct hisi_hba *hisi_hba = phy->hisi_hba; struct asd_sas_phy *sas_phy = &phy->sas_phy; int phy_no = sas_phy->id; phy->wait_phyup_cnt = 0; if (phy->identify.target_port_protocols == SAS_PROTOCOL_SSP) hisi_hba->hw->sl_notify_ssp(hisi_hba, phy_no); hisi_sas_bytes_dmaed(hisi_hba, phy_no, GFP_KERNEL); } static void hisi_sas_phyup_work(struct work_struct *work) { hisi_sas_phyup_work_common(work, HISI_PHYE_PHY_UP); } static void hisi_sas_linkreset_work(struct work_struct *work) { struct hisi_sas_phy *phy = container_of(work, typeof(*phy), works[HISI_PHYE_LINK_RESET]); struct asd_sas_phy *sas_phy = &phy->sas_phy; hisi_sas_control_phy(sas_phy, PHY_FUNC_LINK_RESET, NULL); } static void hisi_sas_phyup_pm_work(struct work_struct *work) { struct hisi_sas_phy *phy = container_of(work, typeof(*phy), works[HISI_PHYE_PHY_UP_PM]); struct hisi_hba *hisi_hba = phy->hisi_hba; struct device *dev = hisi_hba->dev; hisi_sas_phyup_work_common(work, HISI_PHYE_PHY_UP_PM); pm_runtime_put_sync(dev); } static const work_func_t hisi_sas_phye_fns[HISI_PHYES_NUM] = { [HISI_PHYE_PHY_UP] = hisi_sas_phyup_work, [HISI_PHYE_LINK_RESET] = hisi_sas_linkreset_work, [HISI_PHYE_PHY_UP_PM] = hisi_sas_phyup_pm_work, }; bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy, enum hisi_sas_phy_event event) { struct hisi_hba *hisi_hba = phy->hisi_hba; if (WARN_ON(event >= HISI_PHYES_NUM)) return false; return queue_work(hisi_hba->wq, &phy->works[event]); } EXPORT_SYMBOL_GPL(hisi_sas_notify_phy_event); static void hisi_sas_wait_phyup_timedout(struct timer_list *t) { struct hisi_sas_phy *phy = from_timer(phy, t, timer); struct hisi_hba *hisi_hba = phy->hisi_hba; struct device *dev = hisi_hba->dev; int phy_no = phy->sas_phy.id; dev_warn(dev, "phy%d wait phyup timeout, issuing link reset\n", phy_no); hisi_sas_notify_phy_event(phy, HISI_PHYE_LINK_RESET); } #define HISI_SAS_WAIT_PHYUP_RETRIES 10 void hisi_sas_phy_oob_ready(struct hisi_hba *hisi_hba, int phy_no) { struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; struct device *dev = hisi_hba->dev; unsigned long flags; dev_dbg(dev, "phy%d OOB ready\n", phy_no); spin_lock_irqsave(&phy->lock, flags); if (phy->phy_attached) { spin_unlock_irqrestore(&phy->lock, flags); return; } if (!timer_pending(&phy->timer)) { if (phy->wait_phyup_cnt < HISI_SAS_WAIT_PHYUP_RETRIES) { phy->wait_phyup_cnt++; phy->timer.expires = jiffies + HISI_SAS_WAIT_PHYUP_TIMEOUT; add_timer(&phy->timer); spin_unlock_irqrestore(&phy->lock, flags); return; } dev_warn(dev, "phy%d failed to come up %d times, giving up\n", phy_no, phy->wait_phyup_cnt); phy->wait_phyup_cnt = 0; } spin_unlock_irqrestore(&phy->lock, flags); } EXPORT_SYMBOL_GPL(hisi_sas_phy_oob_ready); static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no) { struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; struct asd_sas_phy *sas_phy = &phy->sas_phy; int i; phy->hisi_hba = hisi_hba; phy->port = NULL; phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS; phy->maximum_linkrate = hisi_hba->hw->phy_get_max_linkrate(); sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0; sas_phy->class = SAS; sas_phy->iproto = SAS_PROTOCOL_ALL; sas_phy->tproto = 0; sas_phy->type = PHY_TYPE_PHYSICAL; sas_phy->role = PHY_ROLE_INITIATOR; sas_phy->oob_mode = OOB_NOT_CONNECTED; sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN; sas_phy->id = phy_no; sas_phy->sas_addr = &hisi_hba->sas_addr[0]; sas_phy->frame_rcvd = &phy->frame_rcvd[0]; sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata; sas_phy->lldd_phy = phy; for (i = 0; i < HISI_PHYES_NUM; i++) INIT_WORK(&phy->works[i], hisi_sas_phye_fns[i]); spin_lock_init(&phy->lock); timer_setup(&phy->timer, hisi_sas_wait_phyup_timedout, 0); } /* Wrapper to ensure we track hisi_sas_phy.enable properly */ void hisi_sas_phy_enable(struct hisi_hba *hisi_hba, int phy_no, int enable) { struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; struct asd_sas_phy *aphy = &phy->sas_phy; struct sas_phy *sphy = aphy->phy; unsigned long flags; spin_lock_irqsave(&phy->lock, flags); if (enable) { /* We may have been enabled already; if so, don't touch */ if (!phy->enable) sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN; hisi_hba->hw->phy_start(hisi_hba, phy_no); } else { sphy->negotiated_linkrate = SAS_PHY_DISABLED; hisi_hba->hw->phy_disable(hisi_hba, phy_no); } phy->enable = enable; spin_unlock_irqrestore(&phy->lock, flags); } EXPORT_SYMBOL_GPL(hisi_sas_phy_enable); static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy) { struct sas_ha_struct *sas_ha = sas_phy->ha; struct hisi_hba *hisi_hba = sas_ha->lldd_ha; struct hisi_sas_phy *phy = sas_phy->lldd_phy; struct asd_sas_port *sas_port = sas_phy->port; struct hisi_sas_port *port; unsigned long flags; if (!sas_port) return; port = to_hisi_sas_port(sas_port); spin_lock_irqsave(&hisi_hba->lock, flags); port->port_attached = 1; port->id = phy->port_id; phy->port = port; sas_port->lldd_port = port; spin_unlock_irqrestore(&hisi_hba->lock, flags); } static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task *task, struct hisi_sas_slot *slot, bool need_lock) { if (task) { unsigned long flags; struct task_status_struct *ts; ts = &task->task_status; ts->resp = SAS_TASK_COMPLETE; ts->stat = SAS_ABORTED_TASK; spin_lock_irqsave(&task->task_state_lock, flags); task->task_state_flags &= ~SAS_TASK_STATE_PENDING; if (!slot->is_internal && task->task_proto != SAS_PROTOCOL_SMP) task->task_state_flags |= SAS_TASK_STATE_DONE; spin_unlock_irqrestore(&task->task_state_lock, flags); } hisi_sas_slot_task_free(hisi_hba, task, slot, need_lock); } static void hisi_sas_release_task(struct hisi_hba *hisi_hba, struct domain_device *device) { struct hisi_sas_slot *slot, *slot2; struct hisi_sas_device *sas_dev = device->lldd_dev; spin_lock(&sas_dev->lock); list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry) hisi_sas_do_release_task(hisi_hba, slot->task, slot, false); spin_unlock(&sas_dev->lock); } void hisi_sas_release_tasks(struct hisi_hba *hisi_hba) { struct hisi_sas_device *sas_dev; struct domain_device *device; int i; for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { sas_dev = &hisi_hba->devices[i]; device = sas_dev->sas_device; if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device) continue; hisi_sas_release_task(hisi_hba, device); } } EXPORT_SYMBOL_GPL(hisi_sas_release_tasks); static void hisi_sas_dereg_device(struct hisi_hba *hisi_hba, struct domain_device *device) { if (hisi_hba->hw->dereg_device) hisi_hba->hw->dereg_device(hisi_hba, device); } static int hisi_sas_internal_task_abort_dev(struct hisi_sas_device *sas_dev, bool rst_ha_timeout) { struct hisi_sas_internal_abort_data data = { rst_ha_timeout }; struct domain_device *device = sas_dev->sas_device; struct hisi_hba *hisi_hba = sas_dev->hisi_hba; int i, rc; for (i = 0; i < hisi_hba->cq_nvecs; i++) { struct hisi_sas_cq *cq = &hisi_hba->cq[i]; const struct cpumask *mask = cq->irq_mask; if (mask && !cpumask_intersects(cpu_online_mask, mask)) continue; rc = sas_execute_internal_abort_dev(device, i, &data); if (rc) return rc; } return 0; } static void hisi_sas_dev_gone(struct domain_device *device) { struct hisi_sas_device *sas_dev = device->lldd_dev; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct device *dev = hisi_hba->dev; int ret = 0; dev_info(dev, "dev[%d:%x] is gone\n", sas_dev->device_id, sas_dev->dev_type); down(&hisi_hba->sem); if (!test_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags)) { hisi_sas_internal_task_abort_dev(sas_dev, true); hisi_sas_dereg_device(hisi_hba, device); ret = hisi_hba->hw->clear_itct(hisi_hba, sas_dev); device->lldd_dev = NULL; } if (hisi_hba->hw->free_device) hisi_hba->hw->free_device(sas_dev); /* Don't mark it as SAS_PHY_UNUSED if failed to clear ITCT */ if (!ret) sas_dev->dev_type = SAS_PHY_UNUSED; sas_dev->sas_device = NULL; up(&hisi_hba->sem); } static int hisi_sas_phy_set_linkrate(struct hisi_hba *hisi_hba, int phy_no, struct sas_phy_linkrates *r) { struct sas_phy_linkrates _r; struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; struct asd_sas_phy *sas_phy = &phy->sas_phy; enum sas_linkrate min, max; if (r->minimum_linkrate > SAS_LINK_RATE_1_5_GBPS) return -EINVAL; if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) { max = sas_phy->phy->maximum_linkrate; min = r->minimum_linkrate; } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) { max = r->maximum_linkrate; min = sas_phy->phy->minimum_linkrate; } else return -EINVAL; _r.maximum_linkrate = max; _r.minimum_linkrate = min; sas_phy->phy->maximum_linkrate = max; sas_phy->phy->minimum_linkrate = min; hisi_sas_phy_enable(hisi_hba, phy_no, 0); msleep(100); hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r); hisi_sas_phy_enable(hisi_hba, phy_no, 1); return 0; } static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, void *funcdata) { struct hisi_sas_phy *phy = container_of(sas_phy, struct hisi_sas_phy, sas_phy); struct sas_ha_struct *sas_ha = sas_phy->ha; struct hisi_hba *hisi_hba = sas_ha->lldd_ha; struct device *dev = hisi_hba->dev; DECLARE_COMPLETION_ONSTACK(completion); int phy_no = sas_phy->id; u8 sts = phy->phy_attached; int ret = 0; down(&hisi_hba->sem); phy->reset_completion = &completion; switch (func) { case PHY_FUNC_HARD_RESET: hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); break; case PHY_FUNC_LINK_RESET: hisi_sas_phy_enable(hisi_hba, phy_no, 0); msleep(100); hisi_sas_phy_enable(hisi_hba, phy_no, 1); break; case PHY_FUNC_DISABLE: hisi_sas_phy_enable(hisi_hba, phy_no, 0); goto out; case PHY_FUNC_SET_LINK_RATE: ret = hisi_sas_phy_set_linkrate(hisi_hba, phy_no, funcdata); break; case PHY_FUNC_GET_EVENTS: if (hisi_hba->hw->get_events) { hisi_hba->hw->get_events(hisi_hba, phy_no); goto out; } fallthrough; case PHY_FUNC_RELEASE_SPINUP_HOLD: default: ret = -EOPNOTSUPP; goto out; } if (sts && !wait_for_completion_timeout(&completion, HISI_SAS_WAIT_PHYUP_TIMEOUT)) { dev_warn(dev, "phy%d wait phyup timed out for func %d\n", phy_no, func); if (phy->in_reset) ret = -ETIMEDOUT; } out: phy->reset_completion = NULL; up(&hisi_hba->sem); return ret; } static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev, bool reset, int pmp, u8 *fis) { struct ata_taskfile tf; ata_tf_init(dev, &tf); if (reset) tf.ctl |= ATA_SRST; else tf.ctl &= ~ATA_SRST; tf.command = ATA_CMD_DEV_RESET; ata_tf_to_fis(&tf, pmp, 0, fis); } static int hisi_sas_softreset_ata_disk(struct domain_device *device) { u8 fis[20] = {0}; struct ata_port *ap = device->sata_dev.ap; struct ata_link *link; int rc = TMF_RESP_FUNC_FAILED; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct device *dev = hisi_hba->dev; ata_for_each_link(link, ap, EDGE) { int pmp = sata_srst_pmp(link); hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis); rc = sas_execute_ata_cmd(device, fis, -1); if (rc != TMF_RESP_FUNC_COMPLETE) break; } if (rc == TMF_RESP_FUNC_COMPLETE) { ata_for_each_link(link, ap, EDGE) { int pmp = sata_srst_pmp(link); hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis); rc = sas_execute_ata_cmd(device, fis, -1); if (rc != TMF_RESP_FUNC_COMPLETE) dev_err(dev, "ata disk %016llx de-reset failed\n", SAS_ADDR(device->sas_addr)); } } else { dev_err(dev, "ata disk %016llx reset failed\n", SAS_ADDR(device->sas_addr)); } if (rc == TMF_RESP_FUNC_COMPLETE) hisi_sas_release_task(hisi_hba, device); return rc; } static void hisi_sas_refresh_port_id(struct hisi_hba *hisi_hba) { u32 state = hisi_hba->hw->get_phys_state(hisi_hba); int i; for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { struct hisi_sas_device *sas_dev = &hisi_hba->devices[i]; struct domain_device *device = sas_dev->sas_device; struct asd_sas_port *sas_port; struct hisi_sas_port *port; struct hisi_sas_phy *phy = NULL; struct asd_sas_phy *sas_phy; if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device || !device->port) continue; sas_port = device->port; port = to_hisi_sas_port(sas_port); spin_lock(&sas_port->phy_list_lock); list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el) if (state & BIT(sas_phy->id)) { phy = sas_phy->lldd_phy; break; } spin_unlock(&sas_port->phy_list_lock); if (phy) { port->id = phy->port_id; /* Update linkrate of directly attached device. */ if (!device->parent) device->linkrate = phy->sas_phy.linkrate; hisi_hba->hw->setup_itct(hisi_hba, sas_dev); } else if (!port->port_attached) port->id = 0xff; } } static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 state) { struct asd_sas_port *_sas_port = NULL; int phy_no; for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) { struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; struct asd_sas_phy *sas_phy = &phy->sas_phy; struct asd_sas_port *sas_port = sas_phy->port; bool do_port_check = _sas_port != sas_port; if (!sas_phy->phy->enabled) continue; /* Report PHY state change to libsas */ if (state & BIT(phy_no)) { if (do_port_check && sas_port && sas_port->port_dev) { struct domain_device *dev = sas_port->port_dev; _sas_port = sas_port; if (dev_is_expander(dev->dev_type)) sas_notify_port_event(sas_phy, PORTE_BROADCAST_RCVD, GFP_KERNEL); } } else { hisi_sas_phy_down(hisi_hba, phy_no, 0, GFP_KERNEL); } } } static void hisi_sas_reset_init_all_devices(struct hisi_hba *hisi_hba) { struct hisi_sas_device *sas_dev; struct domain_device *device; int i; for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { sas_dev = &hisi_hba->devices[i]; device = sas_dev->sas_device; if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device) continue; hisi_sas_init_device(device); } } static void hisi_sas_send_ata_reset_each_phy(struct hisi_hba *hisi_hba, struct asd_sas_port *sas_port, struct domain_device *device) { struct ata_port *ap = device->sata_dev.ap; struct device *dev = hisi_hba->dev; int rc = TMF_RESP_FUNC_FAILED; struct ata_link *link; u8 fis[20] = {0}; int i; for (i = 0; i < hisi_hba->n_phy; i++) { if (!(sas_port->phy_mask & BIT(i))) continue; ata_for_each_link(link, ap, EDGE) { int pmp = sata_srst_pmp(link); hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis); rc = sas_execute_ata_cmd(device, fis, i); if (rc != TMF_RESP_FUNC_COMPLETE) { dev_err(dev, "phy%d ata reset failed rc=%d\n", i, rc); break; } } } } static void hisi_sas_terminate_stp_reject(struct hisi_hba *hisi_hba) { struct device *dev = hisi_hba->dev; int port_no, rc, i; for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { struct hisi_sas_device *sas_dev = &hisi_hba->devices[i]; struct domain_device *device = sas_dev->sas_device; if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device) continue; rc = hisi_sas_internal_task_abort_dev(sas_dev, false); if (rc < 0) dev_err(dev, "STP reject: abort dev failed %d\n", rc); } for (port_no = 0; port_no < hisi_hba->n_phy; port_no++) { struct hisi_sas_port *port = &hisi_hba->port[port_no]; struct asd_sas_port *sas_port = &port->sas_port; struct domain_device *port_dev = sas_port->port_dev; struct domain_device *device; if (!port_dev || !dev_is_expander(port_dev->dev_type)) continue; /* Try to find a SATA device */ list_for_each_entry(device, &sas_port->dev_list, dev_list_node) { if (dev_is_sata(device)) { hisi_sas_send_ata_reset_each_phy(hisi_hba, sas_port, device); break; } } } } void hisi_sas_controller_reset_prepare(struct hisi_hba *hisi_hba) { struct Scsi_Host *shost = hisi_hba->shost; hisi_hba->phy_state = hisi_hba->hw->get_phys_state(hisi_hba); scsi_block_requests(shost); hisi_hba->hw->wait_cmds_complete_timeout(hisi_hba, 100, 5000); del_timer_sync(&hisi_hba->timer); set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); } EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_prepare); static void hisi_sas_async_init_wait_phyup(void *data, async_cookie_t cookie) { struct hisi_sas_phy *phy = data; struct hisi_hba *hisi_hba = phy->hisi_hba; struct device *dev = hisi_hba->dev; DECLARE_COMPLETION_ONSTACK(completion); int phy_no = phy->sas_phy.id; phy->reset_completion = &completion; hisi_sas_phy_enable(hisi_hba, phy_no, 1); if (!wait_for_completion_timeout(&completion, HISI_SAS_WAIT_PHYUP_TIMEOUT)) dev_warn(dev, "phy%d wait phyup timed out\n", phy_no); phy->reset_completion = NULL; } void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba) { struct Scsi_Host *shost = hisi_hba->shost; ASYNC_DOMAIN_EXCLUSIVE(async); int phy_no; /* Init and wait for PHYs to come up and all libsas event finished. */ for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) { struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; if (!(hisi_hba->phy_state & BIT(phy_no))) continue; async_schedule_domain(hisi_sas_async_init_wait_phyup, phy, &async); } async_synchronize_full_domain(&async); hisi_sas_refresh_port_id(hisi_hba); clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); if (hisi_hba->reject_stp_links_msk) hisi_sas_terminate_stp_reject(hisi_hba); hisi_sas_reset_init_all_devices(hisi_hba); scsi_unblock_requests(shost); clear_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags); up(&hisi_hba->sem); hisi_sas_rescan_topology(hisi_hba, hisi_hba->phy_state); } EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done); static int hisi_sas_controller_prereset(struct hisi_hba *hisi_hba) { if (!hisi_hba->hw->soft_reset) return -1; down(&hisi_hba->sem); if (test_and_set_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags)) { up(&hisi_hba->sem); return -1; } if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct) hisi_hba->hw->debugfs_snapshot_regs(hisi_hba); return 0; } static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba) { struct device *dev = hisi_hba->dev; struct Scsi_Host *shost = hisi_hba->shost; int rc; dev_info(dev, "controller resetting...\n"); hisi_sas_controller_reset_prepare(hisi_hba); rc = hisi_hba->hw->soft_reset(hisi_hba); if (rc) { dev_warn(dev, "controller reset failed (%d)\n", rc); clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); up(&hisi_hba->sem); scsi_unblock_requests(shost); clear_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags); return rc; } clear_bit(HISI_SAS_HW_FAULT_BIT, &hisi_hba->flags); hisi_sas_controller_reset_done(hisi_hba); dev_info(dev, "controller reset complete\n"); return 0; } static int hisi_sas_abort_task(struct sas_task *task) { struct hisi_sas_internal_abort_data internal_abort_data = { false }; struct domain_device *device = task->dev; struct hisi_sas_device *sas_dev = device->lldd_dev; struct hisi_sas_slot *slot = task->lldd_task; struct hisi_hba *hisi_hba; struct device *dev; int rc = TMF_RESP_FUNC_FAILED; unsigned long flags; if (!sas_dev) return TMF_RESP_FUNC_FAILED; hisi_hba = dev_to_hisi_hba(task->dev); dev = hisi_hba->dev; spin_lock_irqsave(&task->task_state_lock, flags); if (task->task_state_flags & SAS_TASK_STATE_DONE) { struct hisi_sas_cq *cq; if (slot) { /* * sync irq or poll queue to avoid free'ing task * before using task in IO completion */ cq = &hisi_hba->cq[slot->dlvry_queue]; hisi_sas_sync_cq(cq); } spin_unlock_irqrestore(&task->task_state_lock, flags); rc = TMF_RESP_FUNC_COMPLETE; goto out; } task->task_state_flags |= SAS_TASK_STATE_ABORTED; spin_unlock_irqrestore(&task->task_state_lock, flags); if (slot && task->task_proto & SAS_PROTOCOL_SSP) { u16 tag = slot->idx; int rc2; rc = sas_abort_task(task, tag); rc2 = sas_execute_internal_abort_single(device, tag, slot->dlvry_queue, &internal_abort_data); if (rc2 < 0) { dev_err(dev, "abort task: internal abort (%d)\n", rc2); return TMF_RESP_FUNC_FAILED; } /* * If the TMF finds that the IO is not in the device and also * the internal abort does not succeed, then it is safe to * free the slot. * Note: if the internal abort succeeds then the slot * will have already been completed */ if (rc == TMF_RESP_FUNC_COMPLETE && rc2 != TMF_RESP_FUNC_SUCC) { if (task->lldd_task) hisi_sas_do_release_task(hisi_hba, task, slot, true); } } else if (task->task_proto & SAS_PROTOCOL_SATA || task->task_proto & SAS_PROTOCOL_STP) { if (task->dev->dev_type == SAS_SATA_DEV) { struct ata_queued_cmd *qc = task->uldd_task; rc = hisi_sas_internal_task_abort_dev(sas_dev, false); if (rc < 0) { dev_err(dev, "abort task: internal abort failed\n"); goto out; } hisi_sas_dereg_device(hisi_hba, device); /* * If an ATA internal command times out in ATA EH, it * need to execute soft reset, so check the scsicmd */ if ((sas_dev->dev_status == HISI_SAS_DEV_NCQ_ERR) && qc && qc->scsicmd) { hisi_sas_do_release_task(hisi_hba, task, slot, true); rc = TMF_RESP_FUNC_COMPLETE; } else { rc = hisi_sas_softreset_ata_disk(device); } } } else if (slot && task->task_proto & SAS_PROTOCOL_SMP) { /* SMP */ u32 tag = slot->idx; struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue]; rc = sas_execute_internal_abort_single(device, tag, slot->dlvry_queue, &internal_abort_data); if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) && task->lldd_task) { /* * sync irq or poll queue to avoid free'ing task * before using task in IO completion */ hisi_sas_sync_cq(cq); slot->task = NULL; } } out: if (rc != TMF_RESP_FUNC_COMPLETE) dev_notice(dev, "abort task: rc=%d\n", rc); return rc; } static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun) { struct hisi_sas_device *sas_dev = device->lldd_dev; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct device *dev = hisi_hba->dev; int rc; rc = hisi_sas_internal_task_abort_dev(sas_dev, false); if (rc < 0) { dev_err(dev, "abort task set: internal abort rc=%d\n", rc); return TMF_RESP_FUNC_FAILED; } hisi_sas_dereg_device(hisi_hba, device); rc = sas_abort_task_set(device, lun); if (rc == TMF_RESP_FUNC_COMPLETE) hisi_sas_release_task(hisi_hba, device); return rc; } static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device) { struct sas_phy *local_phy = sas_get_local_phy(device); struct hisi_sas_device *sas_dev = device->lldd_dev; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct sas_ha_struct *sas_ha = &hisi_hba->sha; int rc, reset_type; if (!local_phy->enabled) { sas_put_local_phy(local_phy); return -ENODEV; } if (scsi_is_sas_phy_local(local_phy)) { struct asd_sas_phy *sas_phy = sas_ha->sas_phy[local_phy->number]; struct hisi_sas_phy *phy = container_of(sas_phy, struct hisi_sas_phy, sas_phy); unsigned long flags; spin_lock_irqsave(&phy->lock, flags); phy->in_reset = 1; spin_unlock_irqrestore(&phy->lock, flags); } reset_type = (sas_dev->dev_status == HISI_SAS_DEV_INIT || !dev_is_sata(device)) ? true : false; rc = sas_phy_reset(local_phy, reset_type); sas_put_local_phy(local_phy); if (scsi_is_sas_phy_local(local_phy)) { struct asd_sas_phy *sas_phy = sas_ha->sas_phy[local_phy->number]; struct hisi_sas_phy *phy = container_of(sas_phy, struct hisi_sas_phy, sas_phy); unsigned long flags; spin_lock_irqsave(&phy->lock, flags); phy->in_reset = 0; spin_unlock_irqrestore(&phy->lock, flags); /* report PHY down if timed out */ if (rc == -ETIMEDOUT) hisi_sas_phy_down(hisi_hba, sas_phy->id, 0, GFP_KERNEL); return rc; } /* Remote phy */ if (rc) return rc; if (dev_is_sata(device)) { struct ata_link *link = &device->sata_dev.ap->link; rc = ata_wait_after_reset(link, HISI_SAS_WAIT_PHYUP_TIMEOUT, smp_ata_check_ready_type); } else { msleep(2000); } return rc; } static int hisi_sas_I_T_nexus_reset(struct domain_device *device) { struct hisi_sas_device *sas_dev = device->lldd_dev; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct device *dev = hisi_hba->dev; int rc; if (sas_dev->dev_status == HISI_SAS_DEV_NCQ_ERR) sas_dev->dev_status = HISI_SAS_DEV_NORMAL; rc = hisi_sas_internal_task_abort_dev(sas_dev, false); if (rc < 0) { dev_err(dev, "I_T nexus reset: internal abort (%d)\n", rc); return TMF_RESP_FUNC_FAILED; } hisi_sas_dereg_device(hisi_hba, device); rc = hisi_sas_debug_I_T_nexus_reset(device); if (rc == TMF_RESP_FUNC_COMPLETE && dev_is_sata(device)) { struct sas_phy *local_phy; rc = hisi_sas_softreset_ata_disk(device); switch (rc) { case -ECOMM: rc = -ENODEV; break; case TMF_RESP_FUNC_FAILED: case -EMSGSIZE: case -EIO: local_phy = sas_get_local_phy(device); rc = sas_phy_enable(local_phy, 0); if (!rc) { local_phy->enabled = 0; dev_err(dev, "Disabled local phy of ATA disk %016llx due to softreset fail (%d)\n", SAS_ADDR(device->sas_addr), rc); rc = -ENODEV; } sas_put_local_phy(local_phy); break; default: break; } } if ((rc == TMF_RESP_FUNC_COMPLETE) || (rc == -ENODEV)) hisi_sas_release_task(hisi_hba, device); return rc; } static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun) { struct hisi_sas_device *sas_dev = device->lldd_dev; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct device *dev = hisi_hba->dev; int rc = TMF_RESP_FUNC_FAILED; /* Clear internal IO and then lu reset */ rc = hisi_sas_internal_task_abort_dev(sas_dev, false); if (rc < 0) { dev_err(dev, "lu_reset: internal abort failed\n"); goto out; } hisi_sas_dereg_device(hisi_hba, device); if (dev_is_sata(device)) { struct sas_phy *phy; phy = sas_get_local_phy(device); rc = sas_phy_reset(phy, true); if (rc == 0) hisi_sas_release_task(hisi_hba, device); sas_put_local_phy(phy); } else { rc = sas_lu_reset(device, lun); if (rc == TMF_RESP_FUNC_COMPLETE) hisi_sas_release_task(hisi_hba, device); } out: if (rc != TMF_RESP_FUNC_COMPLETE) dev_err(dev, "lu_reset: for device[%d]:rc= %d\n", sas_dev->device_id, rc); return rc; } static void hisi_sas_async_I_T_nexus_reset(void *data, async_cookie_t cookie) { struct domain_device *device = data; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); int rc; rc = hisi_sas_debug_I_T_nexus_reset(device); if (rc != TMF_RESP_FUNC_COMPLETE) dev_info(hisi_hba->dev, "I_T_nexus reset fail for dev:%016llx rc=%d\n", SAS_ADDR(device->sas_addr), rc); } static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha) { struct hisi_hba *hisi_hba = sas_ha->lldd_ha; HISI_SAS_DECLARE_RST_WORK_ON_STACK(r); ASYNC_DOMAIN_EXCLUSIVE(async); int i; queue_work(hisi_hba->wq, &r.work); wait_for_completion(r.completion); if (!r.done) return TMF_RESP_FUNC_FAILED; for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { struct hisi_sas_device *sas_dev = &hisi_hba->devices[i]; struct domain_device *device = sas_dev->sas_device; if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device || dev_is_expander(device->dev_type)) continue; async_schedule_domain(hisi_sas_async_I_T_nexus_reset, device, &async); } async_synchronize_full_domain(&async); hisi_sas_release_tasks(hisi_hba); return TMF_RESP_FUNC_COMPLETE; } static int hisi_sas_query_task(struct sas_task *task) { int rc = TMF_RESP_FUNC_FAILED; if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { struct hisi_sas_slot *slot = task->lldd_task; u32 tag = slot->idx; rc = sas_query_task(task, tag); switch (rc) { /* The task is still in Lun, release it then */ case TMF_RESP_FUNC_SUCC: /* The task is not in Lun or failed, reset the phy */ case TMF_RESP_FUNC_FAILED: case TMF_RESP_FUNC_COMPLETE: break; default: rc = TMF_RESP_FUNC_FAILED; break; } } return rc; } static bool hisi_sas_internal_abort_timeout(struct sas_task *task, void *data) { struct domain_device *device = task->dev; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct hisi_sas_internal_abort_data *timeout = data; if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct) queue_work(hisi_hba->wq, &hisi_hba->debugfs_work); if (task->task_state_flags & SAS_TASK_STATE_DONE) { pr_err("Internal abort: timeout %016llx\n", SAS_ADDR(device->sas_addr)); } else { struct hisi_sas_slot *slot = task->lldd_task; set_bit(HISI_SAS_HW_FAULT_BIT, &hisi_hba->flags); if (slot) { struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue]; /* * sync irq or poll queue to avoid free'ing task * before using task in IO completion */ hisi_sas_sync_cq(cq); slot->task = NULL; } if (timeout->rst_ha_timeout) { pr_err("Internal abort: timeout and not done %016llx. Queuing reset.\n", SAS_ADDR(device->sas_addr)); queue_work(hisi_hba->wq, &hisi_hba->rst_work); } else { pr_err("Internal abort: timeout and not done %016llx.\n", SAS_ADDR(device->sas_addr)); } return true; } return false; } static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy) { hisi_sas_port_notify_formed(sas_phy); } static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type, u8 reg_index, u8 reg_count, u8 *write_data) { struct hisi_hba *hisi_hba = sha->lldd_ha; if (!hisi_hba->hw->write_gpio) return -EOPNOTSUPP; return hisi_hba->hw->write_gpio(hisi_hba, reg_type, reg_index, reg_count, write_data); } static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy) { struct asd_sas_phy *sas_phy = &phy->sas_phy; struct sas_phy *sphy = sas_phy->phy; unsigned long flags; phy->phy_attached = 0; phy->phy_type = 0; phy->port = NULL; spin_lock_irqsave(&phy->lock, flags); if (phy->enable) sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN; else sphy->negotiated_linkrate = SAS_PHY_DISABLED; spin_unlock_irqrestore(&phy->lock, flags); } void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy, gfp_t gfp_flags) { struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; struct asd_sas_phy *sas_phy = &phy->sas_phy; struct device *dev = hisi_hba->dev; if (rdy) { /* Phy down but ready */ hisi_sas_bytes_dmaed(hisi_hba, phy_no, gfp_flags); hisi_sas_port_notify_formed(sas_phy); } else { struct hisi_sas_port *port = phy->port; if (test_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags) || phy->in_reset) { dev_info(dev, "ignore flutter phy%d down\n", phy_no); return; } /* Phy down and not ready */ sas_notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL, gfp_flags); sas_phy_disconnected(sas_phy); if (port) { if (phy->phy_type & PORT_TYPE_SAS) { int port_id = port->id; if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba, port_id)) port->port_attached = 0; } else if (phy->phy_type & PORT_TYPE_SATA) port->port_attached = 0; } hisi_sas_phy_disconnected(phy); } } EXPORT_SYMBOL_GPL(hisi_sas_phy_down); void hisi_sas_phy_bcast(struct hisi_sas_phy *phy) { struct asd_sas_phy *sas_phy = &phy->sas_phy; struct hisi_hba *hisi_hba = phy->hisi_hba; if (test_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags)) return; sas_notify_port_event(sas_phy, PORTE_BROADCAST_RCVD, GFP_ATOMIC); } EXPORT_SYMBOL_GPL(hisi_sas_phy_bcast); int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type) { struct hisi_hba *hisi_hba = shost_priv(shost); if (reset_type != SCSI_ADAPTER_RESET) return -EOPNOTSUPP; queue_work(hisi_hba->wq, &hisi_hba->rst_work); return 0; } EXPORT_SYMBOL_GPL(hisi_sas_host_reset); struct scsi_transport_template *hisi_sas_stt; EXPORT_SYMBOL_GPL(hisi_sas_stt); static struct sas_domain_function_template hisi_sas_transport_ops = { .lldd_dev_found = hisi_sas_dev_found, .lldd_dev_gone = hisi_sas_dev_gone, .lldd_execute_task = hisi_sas_queue_command, .lldd_control_phy = hisi_sas_control_phy, .lldd_abort_task = hisi_sas_abort_task, .lldd_abort_task_set = hisi_sas_abort_task_set, .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset, .lldd_lu_reset = hisi_sas_lu_reset, .lldd_query_task = hisi_sas_query_task, .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha, .lldd_port_formed = hisi_sas_port_formed, .lldd_write_gpio = hisi_sas_write_gpio, .lldd_tmf_aborted = hisi_sas_tmf_aborted, .lldd_abort_timeout = hisi_sas_internal_abort_timeout, }; void hisi_sas_init_mem(struct hisi_hba *hisi_hba) { int i, s, j, max_command_entries = HISI_SAS_MAX_COMMANDS; struct hisi_sas_breakpoint *sata_breakpoint = hisi_hba->sata_breakpoint; for (i = 0; i < hisi_hba->queue_count; i++) { struct hisi_sas_cq *cq = &hisi_hba->cq[i]; struct hisi_sas_dq *dq = &hisi_hba->dq[i]; struct hisi_sas_cmd_hdr *cmd_hdr = hisi_hba->cmd_hdr[i]; s = sizeof(struct hisi_sas_cmd_hdr); for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++) memset(&cmd_hdr[j], 0, s); dq->wr_point = 0; s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; memset(hisi_hba->complete_hdr[i], 0, s); cq->rd_point = 0; } s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy; memset(hisi_hba->initial_fis, 0, s); s = max_command_entries * sizeof(struct hisi_sas_iost); memset(hisi_hba->iost, 0, s); s = max_command_entries * sizeof(struct hisi_sas_breakpoint); memset(hisi_hba->breakpoint, 0, s); s = sizeof(struct hisi_sas_sata_breakpoint); for (j = 0; j < HISI_SAS_MAX_ITCT_ENTRIES; j++) memset(&sata_breakpoint[j], 0, s); } EXPORT_SYMBOL_GPL(hisi_sas_init_mem); int hisi_sas_alloc(struct hisi_hba *hisi_hba) { struct device *dev = hisi_hba->dev; int i, j, s, max_command_entries = HISI_SAS_MAX_COMMANDS; int max_command_entries_ru, sz_slot_buf_ru; int blk_cnt, slots_per_blk; sema_init(&hisi_hba->sem, 1); spin_lock_init(&hisi_hba->lock); for (i = 0; i < hisi_hba->n_phy; i++) { hisi_sas_phy_init(hisi_hba, i); hisi_hba->port[i].port_attached = 0; hisi_hba->port[i].id = -1; } for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED; hisi_hba->devices[i].device_id = i; hisi_hba->devices[i].dev_status = HISI_SAS_DEV_INIT; } for (i = 0; i < hisi_hba->queue_count; i++) { struct hisi_sas_cq *cq = &hisi_hba->cq[i]; struct hisi_sas_dq *dq = &hisi_hba->dq[i]; /* Completion queue structure */ cq->id = i; cq->hisi_hba = hisi_hba; spin_lock_init(&cq->poll_lock); /* Delivery queue structure */ spin_lock_init(&dq->lock); INIT_LIST_HEAD(&dq->list); dq->id = i; dq->hisi_hba = hisi_hba; /* Delivery queue */ s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; hisi_hba->cmd_hdr[i] = dmam_alloc_coherent(dev, s, &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL); if (!hisi_hba->cmd_hdr[i]) goto err_out; /* Completion queue */ s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; hisi_hba->complete_hdr[i] = dmam_alloc_coherent(dev, s, &hisi_hba->complete_hdr_dma[i], GFP_KERNEL); if (!hisi_hba->complete_hdr[i]) goto err_out; } s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); hisi_hba->itct = dmam_alloc_coherent(dev, s, &hisi_hba->itct_dma, GFP_KERNEL); if (!hisi_hba->itct) goto err_out; hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries, sizeof(struct hisi_sas_slot), GFP_KERNEL); if (!hisi_hba->slot_info) goto err_out; /* roundup to avoid overly large block size */ max_command_entries_ru = roundup(max_command_entries, 64); if (hisi_hba->prot_mask & HISI_SAS_DIX_PROT_MASK) sz_slot_buf_ru = sizeof(struct hisi_sas_slot_dif_buf_table); else sz_slot_buf_ru = sizeof(struct hisi_sas_slot_buf_table); sz_slot_buf_ru = roundup(sz_slot_buf_ru, 64); s = max(lcm(max_command_entries_ru, sz_slot_buf_ru), PAGE_SIZE); blk_cnt = (max_command_entries_ru * sz_slot_buf_ru) / s; slots_per_blk = s / sz_slot_buf_ru; for (i = 0; i < blk_cnt; i++) { int slot_index = i * slots_per_blk; dma_addr_t buf_dma; void *buf; buf = dmam_alloc_coherent(dev, s, &buf_dma, GFP_KERNEL); if (!buf) goto err_out; for (j = 0; j < slots_per_blk; j++, slot_index++) { struct hisi_sas_slot *slot; slot = &hisi_hba->slot_info[slot_index]; slot->buf = buf; slot->buf_dma = buf_dma; slot->idx = slot_index; buf += sz_slot_buf_ru; buf_dma += sz_slot_buf_ru; } } s = max_command_entries * sizeof(struct hisi_sas_iost); hisi_hba->iost = dmam_alloc_coherent(dev, s, &hisi_hba->iost_dma, GFP_KERNEL); if (!hisi_hba->iost) goto err_out; s = max_command_entries * sizeof(struct hisi_sas_breakpoint); hisi_hba->breakpoint = dmam_alloc_coherent(dev, s, &hisi_hba->breakpoint_dma, GFP_KERNEL); if (!hisi_hba->breakpoint) goto err_out; s = hisi_hba->slot_index_count = max_command_entries; hisi_hba->slot_index_tags = devm_bitmap_zalloc(dev, s, GFP_KERNEL); if (!hisi_hba->slot_index_tags) goto err_out; s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; hisi_hba->initial_fis = dmam_alloc_coherent(dev, s, &hisi_hba->initial_fis_dma, GFP_KERNEL); if (!hisi_hba->initial_fis) goto err_out; s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint); hisi_hba->sata_breakpoint = dmam_alloc_coherent(dev, s, &hisi_hba->sata_breakpoint_dma, GFP_KERNEL); if (!hisi_hba->sata_breakpoint) goto err_out; hisi_hba->last_slot_index = 0; hisi_hba->wq = create_singlethread_workqueue(dev_name(dev)); if (!hisi_hba->wq) { dev_err(dev, "sas_alloc: failed to create workqueue\n"); goto err_out; } return 0; err_out: return -ENOMEM; } EXPORT_SYMBOL_GPL(hisi_sas_alloc); void hisi_sas_free(struct hisi_hba *hisi_hba) { int i; for (i = 0; i < hisi_hba->n_phy; i++) { struct hisi_sas_phy *phy = &hisi_hba->phy[i]; del_timer_sync(&phy->timer); } if (hisi_hba->wq) destroy_workqueue(hisi_hba->wq); } EXPORT_SYMBOL_GPL(hisi_sas_free); void hisi_sas_rst_work_handler(struct work_struct *work) { struct hisi_hba *hisi_hba = container_of(work, struct hisi_hba, rst_work); if (hisi_sas_controller_prereset(hisi_hba)) return; hisi_sas_controller_reset(hisi_hba); } EXPORT_SYMBOL_GPL(hisi_sas_rst_work_handler); void hisi_sas_sync_rst_work_handler(struct work_struct *work) { struct hisi_sas_rst *rst = container_of(work, struct hisi_sas_rst, work); if (hisi_sas_controller_prereset(rst->hisi_hba)) goto rst_complete; if (!hisi_sas_controller_reset(rst->hisi_hba)) rst->done = true; rst_complete: complete(rst->completion); } EXPORT_SYMBOL_GPL(hisi_sas_sync_rst_work_handler); int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba) { struct device *dev = hisi_hba->dev; struct platform_device *pdev = hisi_hba->platform_dev; struct device_node *np = pdev ? pdev->dev.of_node : NULL; struct clk *refclk; if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr, SAS_ADDR_SIZE)) { dev_err(dev, "could not get property sas-addr\n"); return -ENOENT; } if (np) { /* * These properties are only required for platform device-based * controller with DT firmware. */ hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np, "hisilicon,sas-syscon"); if (IS_ERR(hisi_hba->ctrl)) { dev_err(dev, "could not get syscon\n"); return -ENOENT; } if (device_property_read_u32(dev, "ctrl-reset-reg", &hisi_hba->ctrl_reset_reg)) { dev_err(dev, "could not get property ctrl-reset-reg\n"); return -ENOENT; } if (device_property_read_u32(dev, "ctrl-reset-sts-reg", &hisi_hba->ctrl_reset_sts_reg)) { dev_err(dev, "could not get property ctrl-reset-sts-reg\n"); return -ENOENT; } if (device_property_read_u32(dev, "ctrl-clock-ena-reg", &hisi_hba->ctrl_clock_ena_reg)) { dev_err(dev, "could not get property ctrl-clock-ena-reg\n"); return -ENOENT; } } refclk = devm_clk_get(dev, NULL); if (IS_ERR(refclk)) dev_dbg(dev, "no ref clk property\n"); else hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000; if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) { dev_err(dev, "could not get property phy-count\n"); return -ENOENT; } if (device_property_read_u32(dev, "queue-count", &hisi_hba->queue_count)) { dev_err(dev, "could not get property queue-count\n"); return -ENOENT; } return 0; } EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info); static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev, const struct hisi_sas_hw *hw) { struct resource *res; struct Scsi_Host *shost; struct hisi_hba *hisi_hba; struct device *dev = &pdev->dev; int error; shost = scsi_host_alloc(hw->sht, sizeof(*hisi_hba)); if (!shost) { dev_err(dev, "scsi host alloc failed\n"); return NULL; } hisi_hba = shost_priv(shost); INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler); hisi_hba->hw = hw; hisi_hba->dev = dev; hisi_hba->platform_dev = pdev; hisi_hba->shost = shost; SHOST_TO_SAS_HA(shost) = &hisi_hba->sha; timer_setup(&hisi_hba->timer, NULL, 0); if (hisi_sas_get_fw_info(hisi_hba) < 0) goto err_out; error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); if (error) { dev_err(dev, "No usable DMA addressing method\n"); goto err_out; } hisi_hba->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(hisi_hba->regs)) goto err_out; res = platform_get_resource(pdev, IORESOURCE_MEM, 1); if (res) { hisi_hba->sgpio_regs = devm_ioremap_resource(dev, res); if (IS_ERR(hisi_hba->sgpio_regs)) goto err_out; } if (hisi_sas_alloc(hisi_hba)) { hisi_sas_free(hisi_hba); goto err_out; } return shost; err_out: scsi_host_put(shost); dev_err(dev, "shost alloc failed\n"); return NULL; } static int hisi_sas_interrupt_preinit(struct hisi_hba *hisi_hba) { if (hisi_hba->hw->interrupt_preinit) return hisi_hba->hw->interrupt_preinit(hisi_hba); return 0; } int hisi_sas_probe(struct platform_device *pdev, const struct hisi_sas_hw *hw) { struct Scsi_Host *shost; struct hisi_hba *hisi_hba; struct device *dev = &pdev->dev; struct asd_sas_phy **arr_phy; struct asd_sas_port **arr_port; struct sas_ha_struct *sha; int rc, phy_nr, port_nr, i; shost = hisi_sas_shost_alloc(pdev, hw); if (!shost) return -ENOMEM; sha = SHOST_TO_SAS_HA(shost); hisi_hba = shost_priv(shost); platform_set_drvdata(pdev, sha); phy_nr = port_nr = hisi_hba->n_phy; arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL); arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL); if (!arr_phy || !arr_port) { rc = -ENOMEM; goto err_out_ha; } sha->sas_phy = arr_phy; sha->sas_port = arr_port; sha->lldd_ha = hisi_hba; shost->transportt = hisi_sas_stt; shost->max_id = HISI_SAS_MAX_DEVICES; shost->max_lun = ~0; shost->max_channel = 1; shost->max_cmd_len = 16; if (hisi_hba->hw->slot_index_alloc) { shost->can_queue = HISI_SAS_MAX_COMMANDS; shost->cmd_per_lun = HISI_SAS_MAX_COMMANDS; } else { shost->can_queue = HISI_SAS_UNRESERVED_IPTT; shost->cmd_per_lun = HISI_SAS_UNRESERVED_IPTT; } sha->sas_ha_name = DRV_NAME; sha->dev = hisi_hba->dev; sha->lldd_module = THIS_MODULE; sha->sas_addr = &hisi_hba->sas_addr[0]; sha->num_phys = hisi_hba->n_phy; sha->core.shost = hisi_hba->shost; for (i = 0; i < hisi_hba->n_phy; i++) { sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy; sha->sas_port[i] = &hisi_hba->port[i].sas_port; } rc = hisi_sas_interrupt_preinit(hisi_hba); if (rc) goto err_out_ha; rc = scsi_add_host(shost, &pdev->dev); if (rc) goto err_out_ha; rc = sas_register_ha(sha); if (rc) goto err_out_register_ha; rc = hisi_hba->hw->hw_init(hisi_hba); if (rc) goto err_out_hw_init; scsi_scan_host(shost); return 0; err_out_hw_init: sas_unregister_ha(sha); err_out_register_ha: scsi_remove_host(shost); err_out_ha: hisi_sas_free(hisi_hba); scsi_host_put(shost); return rc; } EXPORT_SYMBOL_GPL(hisi_sas_probe); void hisi_sas_remove(struct platform_device *pdev) { struct sas_ha_struct *sha = platform_get_drvdata(pdev); struct hisi_hba *hisi_hba = sha->lldd_ha; struct Scsi_Host *shost = sha->core.shost; del_timer_sync(&hisi_hba->timer); sas_unregister_ha(sha); sas_remove_host(sha->core.shost); hisi_sas_free(hisi_hba); scsi_host_put(shost); } EXPORT_SYMBOL_GPL(hisi_sas_remove); #if IS_ENABLED(CONFIG_SCSI_HISI_SAS_DEBUGFS_DEFAULT_ENABLE) #define DEBUGFS_ENABLE_DEFAULT "enabled" bool hisi_sas_debugfs_enable = true; u32 hisi_sas_debugfs_dump_count = 50; #else #define DEBUGFS_ENABLE_DEFAULT "disabled" bool hisi_sas_debugfs_enable; u32 hisi_sas_debugfs_dump_count = 1; #endif EXPORT_SYMBOL_GPL(hisi_sas_debugfs_enable); module_param_named(debugfs_enable, hisi_sas_debugfs_enable, bool, 0444); MODULE_PARM_DESC(hisi_sas_debugfs_enable, "Enable driver debugfs (default "DEBUGFS_ENABLE_DEFAULT")"); EXPORT_SYMBOL_GPL(hisi_sas_debugfs_dump_count); module_param_named(debugfs_dump_count, hisi_sas_debugfs_dump_count, uint, 0444); MODULE_PARM_DESC(hisi_sas_debugfs_dump_count, "Number of debugfs dumps to allow"); struct dentry *hisi_sas_debugfs_dir; EXPORT_SYMBOL_GPL(hisi_sas_debugfs_dir); static __init int hisi_sas_init(void) { hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); if (!hisi_sas_stt) return -ENOMEM; if (hisi_sas_debugfs_enable) { hisi_sas_debugfs_dir = debugfs_create_dir("hisi_sas", NULL); if (hisi_sas_debugfs_dump_count > HISI_SAS_MAX_DEBUGFS_DUMP) { pr_info("hisi_sas: Limiting debugfs dump count\n"); hisi_sas_debugfs_dump_count = HISI_SAS_MAX_DEBUGFS_DUMP; } } return 0; } static __exit void hisi_sas_exit(void) { sas_release_transport(hisi_sas_stt); debugfs_remove(hisi_sas_debugfs_dir); } module_init(hisi_sas_init); module_exit(hisi_sas_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("John Garry "); MODULE_DESCRIPTION("HISILICON SAS controller driver"); MODULE_ALIAS("platform:" DRV_NAME);