| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| John Garry | 6733 | 54.87% | 57 | 38.26% |
| Xiang Chen | 3220 | 26.24% | 49 | 32.89% |
| Xiaofei Tan | 2225 | 18.13% | 35 | 23.49% |
| Luo Jiaxing | 29 | 0.24% | 2 | 1.34% |
| Kees Cook | 28 | 0.23% | 1 | 0.67% |
| Gustavo A. R. Silva | 21 | 0.17% | 2 | 1.34% |
| Jason Yan | 13 | 0.11% | 1 | 0.67% |
| Dan Carpenter | 1 | 0.01% | 1 | 0.67% |
| Wei Yongjun | 1 | 0.01% | 1 | 0.67% |
| Total | 12271 | 149 |
/* * Copyright (c) 2015 Linaro Ltd. * Copyright (c) 2015 Hisilicon Limited. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * */ #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_debug_issue_ssp_tmf(struct domain_device *device, u8 *lun, struct hisi_sas_tmf_task *tmf); static int hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, struct domain_device *device, int abort_flag, int tag); 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); 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); int hisi_sas_get_ncq_tag(struct sas_task *task, u32 *tag) { struct ata_queued_cmd *qc = task->uldd_task; if (qc) { if (qc->tf.command == ATA_CMD_FPDMA_WRITE || qc->tf.command == ATA_CMD_FPDMA_READ) { *tag = qc->tag; return 1; } } return 0; } EXPORT_SYMBOL_GPL(hisi_sas_get_ncq_tag); /* * 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) { u16 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_hba->hw->phy_disable(hisi_hba, phy_no); } 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) { unsigned long flags; if (hisi_hba->hw->slot_index_alloc || (slot_idx >= hisi_hba->hw->max_command_entries - HISI_SAS_RESERVED_IPTT_CNT)) { spin_lock_irqsave(&hisi_hba->lock, flags); hisi_sas_slot_index_clear(hisi_hba, slot_idx); spin_unlock_irqrestore(&hisi_hba->lock, flags); } } 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 scsi_cmnd *scsi_cmnd) { int index; void *bitmap = hisi_hba->slot_index_tags; unsigned long flags; if (scsi_cmnd) return scsi_cmnd->request->tag; spin_lock_irqsave(&hisi_hba->lock, flags); index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count, hisi_hba->last_slot_index + 1); if (index >= hisi_hba->slot_index_count) { index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count, hisi_hba->hw->max_command_entries - HISI_SAS_RESERVED_IPTT_CNT); if (index >= hisi_hba->slot_index_count) { spin_unlock_irqrestore(&hisi_hba->lock, flags); return -SAS_QUEUE_FULL; } } hisi_sas_slot_index_set(hisi_hba, index); hisi_hba->last_slot_index = index; spin_unlock_irqrestore(&hisi_hba->lock, flags); return index; } static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba) { int i; for (i = 0; i < hisi_hba->slot_index_count; ++i) hisi_sas_slot_index_clear(hisi_hba, i); } void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, struct hisi_sas_slot *slot) { struct hisi_sas_dq *dq = &hisi_hba->dq[slot->dlvry_queue]; unsigned long flags; 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) dma_unmap_sg(dev, task->scatter, task->num_scatter, task->data_dir); } spin_lock_irqsave(&dq->lock, flags); list_del_init(&slot->entry); spin_unlock_irqrestore(&dq->lock, flags); 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, int device_id, int abort_flag, int tag_to_abort) { hisi_hba->hw->prep_abort(hisi_hba, slot, device_id, abort_flag, tag_to_abort); } static int hisi_sas_task_prep(struct sas_task *task, struct hisi_sas_dq **dq_pointer, bool is_tmf, struct hisi_sas_tmf_task *tmf, int *pass) { struct domain_device *device = task->dev; struct hisi_hba *hisi_hba; struct hisi_sas_device *sas_dev = device->lldd_dev; struct hisi_sas_port *port; struct hisi_sas_slot *slot; struct hisi_sas_cmd_hdr *cmd_hdr_base; struct asd_sas_port *sas_port = device->port; struct device *dev; int dlvry_queue_slot, dlvry_queue, rc, slot_idx; int n_elem = 0, n_elem_req = 0, n_elem_resp = 0; struct hisi_sas_dq *dq; unsigned long flags; int wr_q_index; 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) task->task_done(task); return -ECOMM; } hisi_hba = dev_to_hisi_hba(device); dev = hisi_hba->dev; 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; } *dq_pointer = dq = sas_dev->dq; port = to_hisi_sas_port(sas_port); if (port && !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; } if (!sas_protocol_ata(task->task_proto)) { unsigned int req_len, resp_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_req = dma_map_sg(dev, &task->smp_task.smp_req, 1, DMA_TO_DEVICE); if (!n_elem_req) { 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; } n_elem_resp = dma_map_sg(dev, &task->smp_task.smp_resp, 1, DMA_FROM_DEVICE); if (!n_elem_resp) { rc = -ENOMEM; goto err_out_dma_unmap; } resp_len = sg_dma_len(&task->smp_task.smp_resp); if (resp_len & 0x3) { rc = -EINVAL; goto err_out_dma_unmap; } } } else n_elem = task->num_scatter; if (n_elem > HISI_SAS_SGE_PAGE_CNT) { dev_err(dev, "task prep: n_elem(%d) > HISI_SAS_SGE_PAGE_CNT", n_elem); rc = -EINVAL; goto err_out_dma_unmap; } if (hisi_hba->hw->slot_index_alloc) rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device); else { struct scsi_cmnd *scsi_cmnd = NULL; if (task->uldd_task) { struct ata_queued_cmd *qc; if (dev_is_sata(device)) { qc = task->uldd_task; scsi_cmnd = qc->scsicmd; } else { scsi_cmnd = task->uldd_task; } } rc = hisi_sas_slot_index_alloc(hisi_hba, scsi_cmnd); } if (rc < 0) goto err_out_dma_unmap; slot_idx = rc; slot = &hisi_hba->slot_info[slot_idx]; spin_lock_irqsave(&dq->lock, flags); wr_q_index = hisi_hba->hw->get_free_slot(hisi_hba, dq); if (wr_q_index < 0) { spin_unlock_irqrestore(&dq->lock, flags); rc = -EAGAIN; goto err_out_tag; } list_add_tail(&slot->delivery, &dq->list); list_add_tail(&slot->entry, &sas_dev->list); spin_unlock_irqrestore(&dq->lock, flags); dlvry_queue = dq->id; dlvry_queue_slot = wr_q_index; slot->n_elem = n_elem; 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]; slot->task = task; slot->port = port; slot->tmf = tmf; slot->is_internal = is_tmf; 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, HISI_SAS_STATUS_BUF_SZ); 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_SATA | SAS_PROTOCOL_STP: hisi_sas_task_prep_ata(hisi_hba, slot); break; default: dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n", task->task_proto); break; } spin_lock_irqsave(&task->task_state_lock, flags); task->task_state_flags |= SAS_TASK_AT_INITIATOR; spin_unlock_irqrestore(&task->task_state_lock, flags); ++(*pass); WRITE_ONCE(slot->ready, 1); return 0; err_out_tag: hisi_sas_slot_index_free(hisi_hba, slot_idx); err_out_dma_unmap: if (!sas_protocol_ata(task->task_proto)) { if (task->num_scatter) { dma_unmap_sg(dev, task->scatter, task->num_scatter, task->data_dir); } else if (task->task_proto & SAS_PROTOCOL_SMP) { if (n_elem_req) dma_unmap_sg(dev, &task->smp_task.smp_req, 1, DMA_TO_DEVICE); if (n_elem_resp) dma_unmap_sg(dev, &task->smp_task.smp_resp, 1, DMA_FROM_DEVICE); } } prep_out: dev_err(dev, "task prep: failed[%d]!\n", rc); return rc; } static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags, bool is_tmf, struct hisi_sas_tmf_task *tmf) { u32 rc; u32 pass = 0; unsigned long flags; struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev); struct device *dev = hisi_hba->dev; struct hisi_sas_dq *dq = NULL; if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) { if (in_softirq()) return -EINVAL; down(&hisi_hba->sem); up(&hisi_hba->sem); } /* protect task_prep and start_delivery sequence */ rc = hisi_sas_task_prep(task, &dq, is_tmf, tmf, &pass); if (rc) dev_err(dev, "task exec: failed[%d]!\n", rc); if (likely(pass)) { spin_lock_irqsave(&dq->lock, flags); hisi_hba->hw->start_delivery(dq); spin_unlock_irqrestore(&dq->lock, flags); } return rc; } static void hisi_sas_bytes_dmaed(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; struct sas_ha_struct *sas_ha; if (!phy->phy_attached) return; sas_ha = &hisi_hba->sha; sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE); 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_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED); } 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; unsigned long flags; int last = hisi_hba->last_dev_id; int first = (hisi_hba->last_dev_id + 1) % HISI_SAS_MAX_DEVICES; int i; spin_lock_irqsave(&hisi_hba->lock, flags); 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_NORMAL; sas_dev->dev_type = device->dev_type; sas_dev->hisi_hba = hisi_hba; sas_dev->sas_device = device; sas_dev->dq = dq; INIT_LIST_HEAD(&hisi_hba->devices[i].list); break; } i++; } hisi_hba->last_dev_id = i; spin_unlock_irqrestore(&hisi_hba->lock, flags); return sas_dev; } #define HISI_SAS_SRST_ATA_DISK_CNT 3 static int hisi_sas_init_device(struct domain_device *device) { int rc = TMF_RESP_FUNC_COMPLETE; struct scsi_lun lun; struct hisi_sas_tmf_task tmf_task; int retry = HISI_SAS_SRST_ATA_DISK_CNT; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); switch (device->dev_type) { case SAS_END_DEVICE: int_to_scsilun(0, &lun); tmf_task.tmf = TMF_CLEAR_TASK_SET; rc = hisi_sas_debug_issue_ssp_tmf(device, lun.scsi_lun, &tmf_task); if (rc == TMF_RESP_FUNC_COMPLETE) hisi_sas_release_task(hisi_hba, device); break; case SAS_SATA_DEV: case SAS_SATA_PM: case SAS_SATA_PM_PORT: case SAS_SATA_PENDING: while (retry-- > 0) { rc = hisi_sas_softreset_ata_disk(device); if (!rc) break; } break; default: break; } return rc; } 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; u8 phy_num = parent_dev->ex_dev.num_phys; struct ex_phy *phy; for (phy_no = 0; phy_no < phy_num; phy_no++) { phy = &parent_dev->ex_dev.ex_phy[phy_no]; if (SAS_ADDR(phy->attached_sas_addr) == SAS_ADDR(device->sas_addr)) break; } if (phy_no == phy_num) { 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 = -EINVAL; goto err_out; } } dev_info(dev, "dev[%d:%x] found\n", sas_dev->device_id, sas_dev->dev_type); rc = hisi_sas_init_device(device); if (rc) goto err_out; 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(struct work_struct *work) { struct hisi_sas_phy *phy = container_of(work, typeof(*phy), works[HISI_PHYE_PHY_UP]); struct hisi_hba *hisi_hba = phy->hisi_hba; struct asd_sas_phy *sas_phy = &phy->sas_phy; int phy_no = sas_phy->id; hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */ hisi_sas_bytes_dmaed(hisi_hba, phy_no); } 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 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, }; 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_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); } 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 = to_hisi_sas_port(sas_port); unsigned long flags; if (!sas_port) return; 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) { 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 | SAS_TASK_AT_INITIATOR); 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); } 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; list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry) hisi_sas_do_release_task(hisi_hba, slot->task, slot); } 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 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; dev_info(dev, "dev[%d:%x] is gone\n", sas_dev->device_id, sas_dev->dev_type); if (!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) { hisi_sas_internal_task_abort(hisi_hba, device, HISI_SAS_INT_ABT_DEV, 0); hisi_sas_dereg_device(hisi_hba, device); down(&hisi_hba->sem); hisi_hba->hw->clear_itct(hisi_hba, sas_dev); up(&hisi_hba->sem); device->lldd_dev = NULL; } if (hisi_hba->hw->free_device) hisi_hba->hw->free_device(sas_dev); sas_dev->dev_type = SAS_PHY_UNUSED; } static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) { return hisi_sas_task_exec(task, gfp_flags, 0, NULL); } static void 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->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; _r.maximum_linkrate = max; _r.minimum_linkrate = min; sas_phy->phy->maximum_linkrate = max; sas_phy->phy->minimum_linkrate = min; hisi_hba->hw->phy_disable(hisi_hba, phy_no); msleep(100); hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r); hisi_hba->hw->phy_start(hisi_hba, phy_no); } static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, void *funcdata) { struct sas_ha_struct *sas_ha = sas_phy->ha; struct hisi_hba *hisi_hba = sas_ha->lldd_ha; int phy_no = sas_phy->id; switch (func) { case PHY_FUNC_HARD_RESET: hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); break; case PHY_FUNC_LINK_RESET: hisi_hba->hw->phy_disable(hisi_hba, phy_no); msleep(100); hisi_hba->hw->phy_start(hisi_hba, phy_no); break; case PHY_FUNC_DISABLE: hisi_hba->hw->phy_disable(hisi_hba, phy_no); break; case PHY_FUNC_SET_LINK_RATE: 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); break; } /* fallthru */ case PHY_FUNC_RELEASE_SPINUP_HOLD: default: return -EOPNOTSUPP; } return 0; } static void hisi_sas_task_done(struct sas_task *task) { del_timer(&task->slow_task->timer); complete(&task->slow_task->completion); } static void hisi_sas_tmf_timedout(struct timer_list *t) { struct sas_task_slow *slow = from_timer(slow, t, timer); struct sas_task *task = slow->task; unsigned long flags; bool is_completed = true; spin_lock_irqsave(&task->task_state_lock, flags); if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { task->task_state_flags |= SAS_TASK_STATE_ABORTED; is_completed = false; } spin_unlock_irqrestore(&task->task_state_lock, flags); if (!is_completed) complete(&task->slow_task->completion); } #define TASK_TIMEOUT 20 #define TASK_RETRY 3 #define INTERNAL_ABORT_TIMEOUT 6 static int hisi_sas_exec_internal_tmf_task(struct domain_device *device, void *parameter, u32 para_len, struct hisi_sas_tmf_task *tmf) { struct hisi_sas_device *sas_dev = device->lldd_dev; struct hisi_hba *hisi_hba = sas_dev->hisi_hba; struct device *dev = hisi_hba->dev; struct sas_task *task; int res, retry; for (retry = 0; retry < TASK_RETRY; retry++) { task = sas_alloc_slow_task(GFP_KERNEL); if (!task) return -ENOMEM; task->dev = device; task->task_proto = device->tproto; if (dev_is_sata(device)) { task->ata_task.device_control_reg_update = 1; memcpy(&task->ata_task.fis, parameter, para_len); } else { memcpy(&task->ssp_task, parameter, para_len); } task->task_done = hisi_sas_task_done; task->slow_task->timer.function = hisi_sas_tmf_timedout; task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ; add_timer(&task->slow_task->timer); res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf); if (res) { del_timer(&task->slow_task->timer); dev_err(dev, "abort tmf: executing internal task failed: %d\n", res); goto ex_err; } wait_for_completion(&task->slow_task->completion); res = TMF_RESP_FUNC_FAILED; /* Even TMF timed out, return direct. */ if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { struct hisi_sas_slot *slot = task->lldd_task; dev_err(dev, "abort tmf: TMF task timeout and not done\n"); if (slot) { struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue]; /* * flush tasklet to avoid free'ing task * before using task in IO completion */ tasklet_kill(&cq->tasklet); slot->task = NULL; } goto ex_err; } else dev_err(dev, "abort tmf: TMF task timeout\n"); } if (task->task_status.resp == SAS_TASK_COMPLETE && task->task_status.stat == TMF_RESP_FUNC_COMPLETE) { res = TMF_RESP_FUNC_COMPLETE; break; } if (task->task_status.resp == SAS_TASK_COMPLETE && task->task_status.stat == TMF_RESP_FUNC_SUCC) { res = TMF_RESP_FUNC_SUCC; break; } if (task->task_status.resp == SAS_TASK_COMPLETE && task->task_status.stat == SAS_DATA_UNDERRUN) { /* no error, but return the number of bytes of * underrun */ dev_warn(dev, "abort tmf: task to dev %016llx " "resp: 0x%x sts 0x%x underrun\n", SAS_ADDR(device->sas_addr), task->task_status.resp, task->task_status.stat); res = task->task_status.residual; break; } if (task->task_status.resp == SAS_TASK_COMPLETE && task->task_status.stat == SAS_DATA_OVERRUN) { dev_warn(dev, "abort tmf: blocked task error\n"); res = -EMSGSIZE; break; } dev_warn(dev, "abort tmf: task to dev " "%016llx resp: 0x%x status 0x%x\n", SAS_ADDR(device->sas_addr), task->task_status.resp, task->task_status.stat); sas_free_task(task); task = NULL; } ex_err: if (retry == TASK_RETRY) dev_warn(dev, "abort tmf: executing internal task failed!\n"); sas_free_task(task); return res; } 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; int s = sizeof(struct host_to_dev_fis); 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 = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL); 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 = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL); if (rc != TMF_RESP_FUNC_COMPLETE) dev_err(dev, "ata disk de-reset failed\n"); } } else { dev_err(dev, "ata disk reset failed\n"); } if (rc == TMF_RESP_FUNC_COMPLETE) hisi_sas_release_task(hisi_hba, device); return rc; } static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device, u8 *lun, struct hisi_sas_tmf_task *tmf) { struct sas_ssp_task ssp_task; if (!(device->tproto & SAS_PROTOCOL_SSP)) return TMF_RESP_FUNC_ESUPP; memcpy(ssp_task.LUN, lun, 8); return hisi_sas_exec_internal_tmf_task(device, &ssp_task, sizeof(ssp_task), tmf); } 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); 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; } 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 port->id = 0xff; } } static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state, u32 state) { struct sas_ha_struct *sas_ha = &hisi_hba->sha; 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_ha->notify_port_event(sas_phy, PORTE_BROADCAST_RCVD); } } else if (old_state & (1 << phy_no)) /* PHY down but was up before */ hisi_sas_phy_down(hisi_hba, phy_no, 0); } } 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 hisi_sas_tmf_task tmf_task = { .force_phy = 1 }; struct ata_port *ap = device->sata_dev.ap; struct device *dev = hisi_hba->dev; int s = sizeof(struct host_to_dev_fis); int rc = TMF_RESP_FUNC_FAILED; struct asd_sas_phy *sas_phy; struct ata_link *link; u8 fis[20] = {0}; u32 state; state = hisi_hba->hw->get_phys_state(hisi_hba); list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el) { if (!(state & BIT(sas_phy->id))) continue; ata_for_each_link(link, ap, EDGE) { int pmp = sata_srst_pmp(link); tmf_task.phy_id = sas_phy->id; hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis); rc = hisi_sas_exec_internal_tmf_task(device, fis, s, &tmf_task); if (rc != TMF_RESP_FUNC_COMPLETE) { dev_err(dev, "phy%d ata reset failed rc=%d\n", sas_phy->id, 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(hisi_hba, device, HISI_SAS_INT_ABT_DEV, 0); 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; down(&hisi_hba->sem); 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); if (timer_pending(&hisi_hba->timer)) del_timer_sync(&hisi_hba->timer); set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); } EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_prepare); void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba) { struct Scsi_Host *shost = hisi_hba->shost; u32 state; /* Init and wait for PHYs to come up and all libsas event finished. */ hisi_hba->hw->phys_init(hisi_hba); msleep(1000); hisi_sas_refresh_port_id(hisi_hba); clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); up(&hisi_hba->sem); 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_RESET_BIT, &hisi_hba->flags); state = hisi_hba->hw->get_phys_state(hisi_hba); hisi_sas_rescan_topology(hisi_hba, hisi_hba->phy_state, state); } EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done); 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; if (!hisi_hba->hw->soft_reset) return -1; if (test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) return -1; 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_RESET_BIT, &hisi_hba->flags); return rc; } 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 scsi_lun lun; struct hisi_sas_tmf_task tmf_task; struct domain_device *device = task->dev; struct hisi_sas_device *sas_dev = device->lldd_dev; 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_slot *slot = task->lldd_task; struct hisi_sas_cq *cq; if (slot) { /* * flush tasklet to avoid free'ing task * before using task in IO completion */ cq = &hisi_hba->cq[slot->dlvry_queue]; tasklet_kill(&cq->tasklet); } 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); sas_dev->dev_status = HISI_SAS_DEV_EH; if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { struct scsi_cmnd *cmnd = task->uldd_task; struct hisi_sas_slot *slot = task->lldd_task; u32 tag = slot->idx; int rc2; int_to_scsilun(cmnd->device->lun, &lun); tmf_task.tmf = TMF_ABORT_TASK; tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, &tmf_task); rc2 = hisi_sas_internal_task_abort(hisi_hba, device, HISI_SAS_INT_ABT_CMD, tag); 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); } } else if (task->task_proto & SAS_PROTOCOL_SATA || task->task_proto & SAS_PROTOCOL_STP) { if (task->dev->dev_type == SAS_SATA_DEV) { rc = hisi_sas_internal_task_abort(hisi_hba, device, HISI_SAS_INT_ABT_DEV, 0); if (rc < 0) { dev_err(dev, "abort task: internal abort failed\n"); goto out; } hisi_sas_dereg_device(hisi_hba, device); rc = hisi_sas_softreset_ata_disk(device); } } else if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SMP) { /* SMP */ struct hisi_sas_slot *slot = task->lldd_task; u32 tag = slot->idx; struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue]; rc = hisi_sas_internal_task_abort(hisi_hba, device, HISI_SAS_INT_ABT_CMD, tag); if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) && task->lldd_task) { /* * flush tasklet to avoid free'ing task * before using task in IO completion */ tasklet_kill(&cq->tasklet); 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_hba *hisi_hba = dev_to_hisi_hba(device); struct device *dev = hisi_hba->dev; struct hisi_sas_tmf_task tmf_task; int rc = TMF_RESP_FUNC_FAILED; rc = hisi_sas_internal_task_abort(hisi_hba, device, HISI_SAS_INT_ABT_DEV, 0); 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); tmf_task.tmf = TMF_ABORT_TASK_SET; rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); if (rc == TMF_RESP_FUNC_COMPLETE) hisi_sas_release_task(hisi_hba, device); return rc; } static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun) { int rc = TMF_RESP_FUNC_FAILED; struct hisi_sas_tmf_task tmf_task; tmf_task.tmf = TMF_CLEAR_ACA; rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); 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); int rc, reset_type = (device->dev_type == SAS_SATA_DEV || (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1; struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); struct sas_ha_struct *sas_ha = &hisi_hba->sha; 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); DECLARE_COMPLETION_ONSTACK(phyreset); if (scsi_is_sas_phy_local(local_phy)) { phy->in_reset = 1; phy->reset_completion = &phyreset; } rc = sas_phy_reset(local_phy, reset_type); sas_put_local_phy(local_phy); if (scsi_is_sas_phy_local(local_phy)) { int ret = wait_for_completion_timeout(&phyreset, 2 * HZ); unsigned long flags; spin_lock_irqsave(&phy->lock, flags); phy->reset_completion = NULL; phy->in_reset = 0; spin_unlock_irqrestore(&phy->lock, flags); /* report PHY down if timed out */ if (!ret) hisi_sas_phy_down(hisi_hba, sas_phy->id, 0); } 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 = TMF_RESP_FUNC_FAILED; if (sas_dev->dev_status != HISI_SAS_DEV_EH) return TMF_RESP_FUNC_FAILED; sas_dev->dev_status = HISI_SAS_DEV_NORMAL; rc = hisi_sas_internal_task_abort(hisi_hba, device, HISI_SAS_INT_ABT_DEV, 0); 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) || (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; sas_dev->dev_status = HISI_SAS_DEV_EH; if (dev_is_sata(device)) { struct sas_phy *phy; /* Clear internal IO and then hardreset */ rc = hisi_sas_internal_task_abort(hisi_hba, device, HISI_SAS_INT_ABT_DEV, 0); if (rc < 0) { dev_err(dev, "lu_reset: internal abort failed\n"); goto out; } hisi_sas_dereg_device(hisi_hba, device); phy = sas_get_local_phy(device); rc = sas_phy_reset(phy, 1); if (rc == 0) hisi_sas_release_task(hisi_hba, device); sas_put_local_phy(phy); } else { struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET }; rc = hisi_sas_internal_task_abort(hisi_hba, device, HISI_SAS_INT_ABT_DEV, 0); if (rc < 0) { dev_err(dev, "lu_reset: internal abort failed\n"); goto out; } hisi_sas_dereg_device(hisi_hba, device); rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task); 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 int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha) { struct hisi_hba *hisi_hba = sas_ha->lldd_ha; struct device *dev = hisi_hba->dev; HISI_SAS_DECLARE_RST_WORK_ON_STACK(r); int rc, 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; rc = hisi_sas_debug_I_T_nexus_reset(device); if (rc != TMF_RESP_FUNC_COMPLETE) dev_info(dev, "clear nexus ha: for device[%d] rc=%d\n", sas_dev->device_id, rc); } hisi_sas_release_tasks(hisi_hba); return TMF_RESP_FUNC_COMPLETE; } static int hisi_sas_query_task(struct sas_task *task) { struct scsi_lun lun; struct hisi_sas_tmf_task tmf_task; int rc = TMF_RESP_FUNC_FAILED; if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { struct scsi_cmnd *cmnd = task->uldd_task; struct domain_device *device = task->dev; struct hisi_sas_slot *slot = task->lldd_task; u32 tag = slot->idx; int_to_scsilun(cmnd->device->lun, &lun); tmf_task.tmf = TMF_QUERY_TASK; tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag); rc = hisi_sas_debug_issue_ssp_tmf(device, lun.scsi_lun, &tmf_task); 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 int hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id, struct sas_task *task, int abort_flag, int task_tag) { struct domain_device *device = task->dev; struct hisi_sas_device *sas_dev = device->lldd_dev; struct device *dev = hisi_hba->dev; struct hisi_sas_port *port; struct hisi_sas_slot *slot; struct asd_sas_port *sas_port = device->port; struct hisi_sas_cmd_hdr *cmd_hdr_base; struct hisi_sas_dq *dq = sas_dev->dq; int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx; unsigned long flags, flags_dq = 0; int wr_q_index; if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) return -EINVAL; if (!device->port) return -1; port = to_hisi_sas_port(sas_port); /* simply get a slot and send abort command */ rc = hisi_sas_slot_index_alloc(hisi_hba, NULL); if (rc < 0) goto err_out; slot_idx = rc; slot = &hisi_hba->slot_info[slot_idx]; spin_lock_irqsave(&dq->lock, flags_dq); wr_q_index = hisi_hba->hw->get_free_slot(hisi_hba, dq); if (wr_q_index < 0) { spin_unlock_irqrestore(&dq->lock, flags_dq); rc = -EAGAIN; goto err_out_tag; } list_add_tail(&slot->delivery, &dq->list); spin_unlock_irqrestore(&dq->lock, flags_dq); dlvry_queue = dq->id; dlvry_queue_slot = wr_q_index; slot->n_elem = n_elem; 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]; slot->task = task; slot->port = port; slot->is_internal = true; 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, HISI_SAS_STATUS_BUF_SZ); hisi_sas_task_prep_abort(hisi_hba, slot, device_id, abort_flag, task_tag); spin_lock_irqsave(&task->task_state_lock, flags); task->task_state_flags |= SAS_TASK_AT_INITIATOR; spin_unlock_irqrestore(&task->task_state_lock, flags); WRITE_ONCE(slot->ready, 1); /* send abort command to the chip */ spin_lock_irqsave(&dq->lock, flags); list_add_tail(&slot->entry, &sas_dev->list); hisi_hba->hw->start_delivery(dq); spin_unlock_irqrestore(&dq->lock, flags); return 0; err_out_tag: hisi_sas_slot_index_free(hisi_hba, slot_idx); err_out: dev_err(dev, "internal abort task prep: failed[%d]!\n", rc); return rc; } /** * hisi_sas_internal_task_abort -- execute an internal * abort command for single IO command or a device * @hisi_hba: host controller struct * @device: domain device * @abort_flag: mode of operation, device or single IO * @tag: tag of IO to be aborted (only relevant to single * IO mode) */ static int hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba, struct domain_device *device, int abort_flag, int tag) { struct sas_task *task; struct hisi_sas_device *sas_dev = device->lldd_dev; struct device *dev = hisi_hba->dev; int res; /* * The interface is not realized means this HW don't support internal * abort, or don't need to do internal abort. Then here, we return * TMF_RESP_FUNC_FAILED and let other steps go on, which depends that * the internal abort has been executed and returned CQ. */ if (!hisi_hba->hw->prep_abort) return TMF_RESP_FUNC_FAILED; task = sas_alloc_slow_task(GFP_KERNEL); if (!task) return -ENOMEM; task->dev = device; task->task_proto = device->tproto; task->task_done = hisi_sas_task_done; task->slow_task->timer.function = hisi_sas_tmf_timedout; task->slow_task->timer.expires = jiffies + INTERNAL_ABORT_TIMEOUT*HZ; add_timer(&task->slow_task->timer); res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id, task, abort_flag, tag); if (res) { del_timer(&task->slow_task->timer); dev_err(dev, "internal task abort: executing internal task failed: %d\n", res); goto exit; } wait_for_completion(&task->slow_task->completion); res = TMF_RESP_FUNC_FAILED; /* Internal abort timed out */ if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { struct hisi_sas_slot *slot = task->lldd_task; if (slot) { struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue]; /* * flush tasklet to avoid free'ing task * before using task in IO completion */ tasklet_kill(&cq->tasklet); slot->task = NULL; } dev_err(dev, "internal task abort: timeout and not done.\n"); res = -EIO; goto exit; } else dev_err(dev, "internal task abort: timeout.\n"); } if (task->task_status.resp == SAS_TASK_COMPLETE && task->task_status.stat == TMF_RESP_FUNC_COMPLETE) { res = TMF_RESP_FUNC_COMPLETE; goto exit; } if (task->task_status.resp == SAS_TASK_COMPLETE && task->task_status.stat == TMF_RESP_FUNC_SUCC) { res = TMF_RESP_FUNC_SUCC; goto exit; } exit: dev_dbg(dev, "internal task abort: task to dev %016llx task=%p " "resp: 0x%x sts 0x%x\n", SAS_ADDR(device->sas_addr), task, task->task_status.resp, /* 0 is complete, -1 is undelivered */ task->task_status.stat); sas_free_task(task); return res; } 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) { phy->phy_attached = 0; phy->phy_type = 0; phy->port = NULL; } void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy) { struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; struct asd_sas_phy *sas_phy = &phy->sas_phy; struct sas_ha_struct *sas_ha = &hisi_hba->sha; struct device *dev = hisi_hba->dev; if (rdy) { /* Phy down but ready */ hisi_sas_bytes_dmaed(hisi_hba, phy_no); hisi_sas_port_notify_formed(sas_phy); } else { struct hisi_sas_port *port = phy->port; if (test_bit(HISI_SAS_RESET_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_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL); 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_kill_tasklets(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]; tasklet_kill(&cq->tasklet); } } EXPORT_SYMBOL_GPL(hisi_sas_kill_tasklets); struct scsi_transport_template *hisi_sas_stt; EXPORT_SYMBOL_GPL(hisi_sas_stt); struct device_attribute *host_attrs[] = { &dev_attr_phy_event_threshold, NULL, }; EXPORT_SYMBOL_GPL(host_attrs); 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_clear_aca = hisi_sas_clear_aca, .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, }; void hisi_sas_init_mem(struct hisi_hba *hisi_hba) { int i, s, max_command_entries = hisi_hba->hw->max_command_entries; 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]; s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; memset(hisi_hba->cmd_hdr[i], 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 = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint); memset(hisi_hba->sata_breakpoint, 0, s); } EXPORT_SYMBOL_GPL(hisi_sas_init_mem); int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost) { struct device *dev = hisi_hba->dev; int i, j, s, max_command_entries = hisi_hba->hw->max_command_entries; 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_NORMAL; } 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; /* 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; memset(hisi_hba->itct, 0, s); 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); sz_slot_buf_ru = roundup(sizeof(struct hisi_sas_slot_buf_table), 64); s = lcm(max_command_entries_ru, sz_slot_buf_ru); 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++) { struct hisi_sas_slot_buf_table *buf; dma_addr_t buf_dma; int slot_index = i * slots_per_blk; buf = dmam_alloc_coherent(dev, s, &buf_dma, GFP_KERNEL); if (!buf) goto err_out; memset(buf, 0, s); 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++; buf_dma += sizeof(*buf); } } 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; hisi_hba->slot_index_count = max_command_entries; s = hisi_hba->slot_index_count / BITS_PER_BYTE; hisi_hba->slot_index_tags = devm_kzalloc(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_sas_init_mem(hisi_hba); hisi_sas_slot_index_init(hisi_hba); hisi_hba->last_slot_index = hisi_hba->hw->max_command_entries - HISI_SAS_RESERVED_IPTT_CNT; 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) { 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); 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_reset(rst->hisi_hba)) rst->done = true; 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; 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; if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) && dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) { dev_err(dev, "No usable DMA addressing method\n"); goto err_out; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); hisi_hba->regs = devm_ioremap_resource(dev, res); 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, shost)) { 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; } 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; shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT); if (hisi_hba->hw->slot_index_alloc) { shost->can_queue = hisi_hba->hw->max_command_entries; shost->cmd_per_lun = hisi_hba->hw->max_command_entries; } else { shost->can_queue = hisi_hba->hw->max_command_entries - HISI_SAS_RESERVED_IPTT_CNT; shost->cmd_per_lun = hisi_hba->hw->max_command_entries - HISI_SAS_RESERVED_IPTT_CNT; } 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 = 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_register_ha; scsi_scan_host(shost); return 0; 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); int 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; if (timer_pending(&hisi_hba->timer)) del_timer(&hisi_hba->timer); sas_unregister_ha(sha); sas_remove_host(sha->core.shost); hisi_sas_free(hisi_hba); scsi_host_put(shost); return 0; } EXPORT_SYMBOL_GPL(hisi_sas_remove); static __init int hisi_sas_init(void) { hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); if (!hisi_sas_stt) return -ENOMEM; return 0; } static __exit void hisi_sas_exit(void) { sas_release_transport(hisi_sas_stt); } module_init(hisi_sas_init); module_exit(hisi_sas_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("John Garry <john.garry@huawei.com>"); MODULE_DESCRIPTION("HISILICON SAS controller driver"); MODULE_ALIAS("platform:" DRV_NAME);
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