diff options
Diffstat (limited to 'drivers/scsi/pm8001/pm8001_sas.c')
| -rw-r--r-- | drivers/scsi/pm8001/pm8001_sas.c | 1176 |
1 files changed, 582 insertions, 594 deletions
diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c index a85d73de7c80..6a8d35aea93a 100644 --- a/drivers/scsi/pm8001/pm8001_sas.c +++ b/drivers/scsi/pm8001/pm8001_sas.c @@ -40,6 +40,7 @@ #include <linux/slab.h> #include "pm8001_sas.h" +#include "pm80xx_tracepoints.h" /** * pm8001_find_tag - from sas task to find out tag that belongs to this task @@ -58,25 +59,21 @@ static int pm8001_find_tag(struct sas_task *task, u32 *tag) } /** - * pm8001_tag_clear - clear the tags bitmap + * pm8001_tag_free - free the no more needed tag * @pm8001_ha: our hba struct * @tag: the found tag associated with the task */ -static void pm8001_tag_clear(struct pm8001_hba_info *pm8001_ha, u32 tag) -{ - void *bitmap = pm8001_ha->tags; - clear_bit(tag, bitmap); -} - void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag) { - pm8001_tag_clear(pm8001_ha, tag); -} + void *bitmap = pm8001_ha->rsvd_tags; + unsigned long flags; -static void pm8001_tag_set(struct pm8001_hba_info *pm8001_ha, u32 tag) -{ - void *bitmap = pm8001_ha->tags; - set_bit(tag, bitmap); + if (tag >= PM8001_RESERVE_SLOT) + return; + + spin_lock_irqsave(&pm8001_ha->bitmap_lock, flags); + __clear_bit(tag, bitmap); + spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags); } /** @@ -84,35 +81,103 @@ static void pm8001_tag_set(struct pm8001_hba_info *pm8001_ha, u32 tag) * @pm8001_ha: our hba struct * @tag_out: the found empty tag . */ -inline int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out) +int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out) { - unsigned int index, tag; - void *bitmap = pm8001_ha->tags; + void *bitmap = pm8001_ha->rsvd_tags; + unsigned long flags; + unsigned int tag; - index = find_first_zero_bit(bitmap, pm8001_ha->tags_num); - tag = index; - if (tag >= pm8001_ha->tags_num) + spin_lock_irqsave(&pm8001_ha->bitmap_lock, flags); + tag = find_first_zero_bit(bitmap, PM8001_RESERVE_SLOT); + if (tag >= PM8001_RESERVE_SLOT) { + spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags); return -SAS_QUEUE_FULL; - pm8001_tag_set(pm8001_ha, tag); + } + __set_bit(tag, bitmap); + spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags); + + /* reserved tags are in the lower region of the tagset */ *tag_out = tag; return 0; } -void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha) +static void pm80xx_get_tag_opcodes(struct sas_task *task, int *ata_op, + int *ata_tag, bool *task_aborted) { - int i; - for (i = 0; i < pm8001_ha->tags_num; ++i) - pm8001_tag_clear(pm8001_ha, i); + unsigned long flags; + struct ata_queued_cmd *qc = NULL; + + *ata_op = 0; + *ata_tag = -1; + *task_aborted = false; + + if (!task) + return; + + spin_lock_irqsave(&task->task_state_lock, flags); + if (unlikely((task->task_state_flags & SAS_TASK_STATE_ABORTED))) + *task_aborted = true; + spin_unlock_irqrestore(&task->task_state_lock, flags); + + if (task->task_proto == SAS_PROTOCOL_STP) { + // sas_ata_qc_issue path uses SAS_PROTOCOL_STP. + // This only works for scsi + libsas + libata users. + qc = task->uldd_task; + if (qc) { + *ata_op = qc->tf.command; + *ata_tag = qc->tag; + } + } } - /** - * pm8001_mem_alloc - allocate memory for pm8001. - * @pdev: pci device. - * @virt_addr: the allocated virtual address - * @pphys_addr_hi: the physical address high byte address. - * @pphys_addr_lo: the physical address low byte address. - * @mem_size: memory size. - */ +u32 pm80xx_get_local_phy_id(struct domain_device *dev) +{ + struct pm8001_device *pm8001_dev = dev->lldd_dev; + + if (dev_parent_is_expander(dev)) + return dev->parent->ex_dev.ex_phy->phy_id; + + return pm8001_dev->attached_phy; +} + +void pm80xx_show_pending_commands(struct pm8001_hba_info *pm8001_ha, + struct pm8001_device *target_pm8001_dev) +{ + int i = 0, ata_op = 0, ata_tag = -1; + struct pm8001_ccb_info *ccb = NULL; + struct sas_task *task = NULL; + struct pm8001_device *pm8001_dev = NULL; + bool task_aborted; + + for (i = 0; i < pm8001_ha->ccb_count; i++) { + ccb = &pm8001_ha->ccb_info[i]; + if (ccb->ccb_tag == PM8001_INVALID_TAG) + continue; + pm8001_dev = ccb->device; + if (target_pm8001_dev && pm8001_dev && + target_pm8001_dev != pm8001_dev) + continue; + task = ccb->task; + pm80xx_get_tag_opcodes(task, &ata_op, &ata_tag, &task_aborted); + pm8001_dbg(pm8001_ha, FAIL, + "tag %#x, device %#x task %p task aborted %d ata opcode %#x ata tag %d\n", + ccb->ccb_tag, + (pm8001_dev ? pm8001_dev->device_id : 0), + task, task_aborted, + ata_op, ata_tag); + } +} + +/** + * pm8001_mem_alloc - allocate memory for pm8001. + * @pdev: pci device. + * @virt_addr: the allocated virtual address + * @pphys_addr: DMA address for this device + * @pphys_addr_hi: the physical address high byte address. + * @pphys_addr_lo: the physical address low byte address. + * @mem_size: memory size. + * @align: requested byte alignment + */ int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr, dma_addr_t *pphys_addr, u32 *pphys_addr_hi, u32 *pphys_addr_lo, u32 mem_size, u32 align) @@ -123,13 +188,10 @@ int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr, u64 align_offset = 0; if (align) align_offset = (dma_addr_t)align - 1; - mem_virt_alloc = - pci_alloc_consistent(pdev, mem_size + align, &mem_dma_handle); - if (!mem_virt_alloc) { - pm8001_printk("memory allocation error\n"); - return -1; - } - memset((void *)mem_virt_alloc, 0, mem_size+align); + mem_virt_alloc = dma_alloc_coherent(&pdev->dev, mem_size + align, + &mem_dma_handle, GFP_KERNEL); + if (!mem_virt_alloc) + return -ENOMEM; *pphys_addr = mem_dma_handle; phys_align = (*pphys_addr + align_offset) & ~align_offset; *virt_addr = (void *)mem_virt_alloc + phys_align - *pphys_addr; @@ -137,6 +199,7 @@ int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr, *pphys_addr_lo = lower_32_bits(phys_align); return 0; } + /** * pm8001_find_ha_by_dev - from domain device which come from sas layer to * find out our hba struct. @@ -165,10 +228,22 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, int rc = 0, phy_id = sas_phy->id; struct pm8001_hba_info *pm8001_ha = NULL; struct sas_phy_linkrates *rates; + struct pm8001_phy *phy; DECLARE_COMPLETION_ONSTACK(completion); unsigned long flags; pm8001_ha = sas_phy->ha->lldd_ha; - pm8001_ha->phy[phy_id].enable_completion = &completion; + phy = &pm8001_ha->phy[phy_id]; + + if (PM8001_CHIP_DISP->fatal_errors(pm8001_ha)) { + /* + * If the controller is in fatal error state, + * we will not get a response from the controller + */ + pm8001_dbg(pm8001_ha, FAIL, + "Phy control failed due to fatal errors\n"); + return -EFAULT; + } + switch (func) { case PHY_FUNC_SET_LINK_RATE: rates = funcdata; @@ -180,7 +255,8 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, pm8001_ha->phy[phy_id].maximum_linkrate = rates->maximum_linkrate; } - if (pm8001_ha->phy[phy_id].phy_state == 0) { + if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) { + pm8001_ha->phy[phy_id].enable_completion = &completion; PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id); wait_for_completion(&completion); } @@ -188,7 +264,8 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, PHY_LINK_RESET); break; case PHY_FUNC_HARD_RESET: - if (pm8001_ha->phy[phy_id].phy_state == 0) { + if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) { + pm8001_ha->phy[phy_id].enable_completion = &completion; PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id); wait_for_completion(&completion); } @@ -196,7 +273,8 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, PHY_HARD_RESET); break; case PHY_FUNC_LINK_RESET: - if (pm8001_ha->phy[phy_id].phy_state == 0) { + if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) { + pm8001_ha->phy[phy_id].enable_completion = &completion; PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id); wait_for_completion(&completion); } @@ -208,6 +286,23 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, PHY_LINK_RESET); break; case PHY_FUNC_DISABLE: + if (pm8001_ha->chip_id != chip_8001) { + if (pm8001_ha->phy[phy_id].phy_state == + PHY_STATE_LINK_UP_SPCV) { + sas_phy_disconnected(&phy->sas_phy); + sas_notify_phy_event(&phy->sas_phy, + PHYE_LOSS_OF_SIGNAL, GFP_KERNEL); + phy->phy_attached = 0; + } + } else { + if (pm8001_ha->phy[phy_id].phy_state == + PHY_STATE_LINK_UP_SPC) { + sas_phy_disconnected(&phy->sas_phy); + sas_notify_phy_event(&phy->sas_phy, + PHYE_LOSS_OF_SIGNAL, GFP_KERNEL); + phy->phy_attached = 0; + } + } PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id); break; case PHY_FUNC_GET_EVENTS: @@ -221,20 +316,20 @@ int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, } { struct sas_phy *phy = sas_phy->phy; - uint32_t *qp = (uint32_t *)(((char *) - pm8001_ha->io_mem[2].memvirtaddr) - + 0x1034 + (0x4000 * (phy_id & 3))); - - phy->invalid_dword_count = qp[0]; - phy->running_disparity_error_count = qp[1]; - phy->loss_of_dword_sync_count = qp[3]; - phy->phy_reset_problem_count = qp[4]; + u32 __iomem *qp = pm8001_ha->io_mem[2].memvirtaddr + + 0x1034 + (0x4000 * (phy_id & 3)); + + phy->invalid_dword_count = readl(qp); + phy->running_disparity_error_count = readl(&qp[1]); + phy->loss_of_dword_sync_count = readl(&qp[3]); + phy->phy_reset_problem_count = readl(&qp[4]); } if (pm8001_ha->chip_id == chip_8001) pm8001_bar4_shift(pm8001_ha, 0); spin_unlock_irqrestore(&pm8001_ha->lock, flags); return 0; default: + pm8001_dbg(pm8001_ha, DEVIO, "func 0x%x\n", func); rc = -EOPNOTSUPP; } msleep(300); @@ -251,12 +346,17 @@ void pm8001_scan_start(struct Scsi_Host *shost) int i; struct pm8001_hba_info *pm8001_ha; struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); + DECLARE_COMPLETION_ONSTACK(completion); pm8001_ha = sha->lldd_ha; /* SAS_RE_INITIALIZATION not available in SPCv/ve */ if (pm8001_ha->chip_id == chip_8001) PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha); - for (i = 0; i < pm8001_ha->chip->n_phy; ++i) + for (i = 0; i < pm8001_ha->chip->n_phy; ++i) { + pm8001_ha->phy[i].enable_completion = &completion; PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i); + wait_for_completion(&completion); + msleep(300); + } } int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time) @@ -286,13 +386,12 @@ static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha, u32 pm8001_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; - } + + if (qc && ata_is_ncq(qc->tf.protocol)) { + *tag = qc->tag; + return 1; } + return 0; } @@ -308,19 +407,31 @@ static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha, } /** + * pm8001_task_prep_internal_abort - the dispatcher function, prepare data + * for internal abort task + * @pm8001_ha: our hba card information + * @ccb: the ccb which attached to sata task + */ +static int pm8001_task_prep_internal_abort(struct pm8001_hba_info *pm8001_ha, + struct pm8001_ccb_info *ccb) +{ + return PM8001_CHIP_DISP->task_abort(pm8001_ha, ccb); +} + +/** * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data * @pm8001_ha: our hba card information * @ccb: the ccb which attached to TM * @tmf: the task management IU */ static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha, - struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf) + struct pm8001_ccb_info *ccb, struct sas_tmf_task *tmf) { return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf); } /** - * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task + * pm8001_task_prep_ssp - the dispatcher function, prepare ssp data for ssp task * @pm8001_ha: our hba card information * @ccb: the ccb which attached to ssp task */ @@ -330,205 +441,161 @@ static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha, return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb); } - /* Find the local port id that's attached to this device */ -static int sas_find_local_port_id(struct domain_device *dev) +#define DEV_IS_GONE(pm8001_dev) \ + ((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))) + + +static int pm8001_deliver_command(struct pm8001_hba_info *pm8001_ha, + struct pm8001_ccb_info *ccb) { - struct domain_device *pdev = dev->parent; - - /* Directly attached device */ - if (!pdev) - return dev->port->id; - while (pdev) { - struct domain_device *pdev_p = pdev->parent; - if (!pdev_p) - return pdev->port->id; - pdev = pdev->parent; + struct sas_task *task = ccb->task; + enum sas_protocol task_proto = task->task_proto; + struct sas_tmf_task *tmf = task->tmf; + int is_tmf = !!tmf; + + switch (task_proto) { + case SAS_PROTOCOL_SMP: + return pm8001_task_prep_smp(pm8001_ha, ccb); + case SAS_PROTOCOL_SSP: + if (is_tmf) + return pm8001_task_prep_ssp_tm(pm8001_ha, ccb, tmf); + return pm8001_task_prep_ssp(pm8001_ha, ccb); + case SAS_PROTOCOL_SATA: + case SAS_PROTOCOL_STP: + return pm8001_task_prep_ata(pm8001_ha, ccb); + case SAS_PROTOCOL_INTERNAL_ABORT: + return pm8001_task_prep_internal_abort(pm8001_ha, ccb); + default: + dev_err(pm8001_ha->dev, "unknown sas_task proto: 0x%x\n", + task_proto); } - return 0; + + return -EINVAL; } /** - * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware. + * pm8001_queue_command - register for upper layer used, all IO commands sent + * to HBA are from this interface. * @task: the task to be execute. - * @num: if can_queue great than 1, the task can be queued up. for SMP task, - * we always execute one one time. - * @gfp_flags: gfp_flags. - * @is_tmf: if it is task management task. - * @tmf: the task management IU + * @gfp_flags: gfp_flags */ -#define DEV_IS_GONE(pm8001_dev) \ - ((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))) -static int pm8001_task_exec(struct sas_task *task, const int num, - gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf) +int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags) { + struct task_status_struct *ts = &task->task_status; + enum sas_protocol task_proto = task->task_proto; struct domain_device *dev = task->dev; + struct pm8001_device *pm8001_dev = dev->lldd_dev; + bool internal_abort = sas_is_internal_abort(task); struct pm8001_hba_info *pm8001_ha; - struct pm8001_device *pm8001_dev; - struct pm8001_port *port = NULL; - struct sas_task *t = task; + struct pm8001_port *port; struct pm8001_ccb_info *ccb; - u32 tag = 0xdeadbeef, rc, n_elem = 0; - u32 n = num; - unsigned long flags = 0; + unsigned long flags; + u32 n_elem = 0; + int rc = 0; - if (!dev->port) { - struct task_status_struct *tsm = &t->task_status; - tsm->resp = SAS_TASK_UNDELIVERED; - tsm->stat = SAS_PHY_DOWN; + if (!internal_abort && !dev->port) { + ts->resp = SAS_TASK_UNDELIVERED; + ts->stat = SAS_PHY_DOWN; if (dev->dev_type != SAS_SATA_DEV) - t->task_done(t); + task->task_done(task); + return 0; + } + + pm8001_ha = pm8001_find_ha_by_dev(dev); + if (pm8001_ha->controller_fatal_error) { + ts->resp = SAS_TASK_UNDELIVERED; + task->task_done(task); return 0; } - pm8001_ha = pm8001_find_ha_by_dev(task->dev); - PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n ")); + + pm8001_dbg(pm8001_ha, IO, "pm8001_task_exec device\n"); + spin_lock_irqsave(&pm8001_ha->lock, flags); - do { - dev = t->dev; - pm8001_dev = dev->lldd_dev; - port = &pm8001_ha->port[sas_find_local_port_id(dev)]; - if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) { - if (sas_protocol_ata(t->task_proto)) { - struct task_status_struct *ts = &t->task_status; - ts->resp = SAS_TASK_UNDELIVERED; - ts->stat = SAS_PHY_DOWN; - spin_unlock_irqrestore(&pm8001_ha->lock, flags); - t->task_done(t); - spin_lock_irqsave(&pm8001_ha->lock, flags); - if (n > 1) - t = list_entry(t->list.next, - struct sas_task, list); - continue; - } else { - struct task_status_struct *ts = &t->task_status; - ts->resp = SAS_TASK_UNDELIVERED; - ts->stat = SAS_PHY_DOWN; - t->task_done(t); - if (n > 1) - t = list_entry(t->list.next, - struct sas_task, list); - continue; - } - } - rc = pm8001_tag_alloc(pm8001_ha, &tag); - if (rc) - goto err_out; - ccb = &pm8001_ha->ccb_info[tag]; - - if (!sas_protocol_ata(t->task_proto)) { - if (t->num_scatter) { - n_elem = dma_map_sg(pm8001_ha->dev, - t->scatter, - t->num_scatter, - t->data_dir); - if (!n_elem) { - rc = -ENOMEM; - goto err_out_tag; - } - } + port = dev->port->lldd_port; + + if (!internal_abort && + (DEV_IS_GONE(pm8001_dev) || !port || !port->port_attached)) { + ts->resp = SAS_TASK_UNDELIVERED; + ts->stat = SAS_PHY_DOWN; + if (sas_protocol_ata(task_proto)) { + spin_unlock_irqrestore(&pm8001_ha->lock, flags); + task->task_done(task); + spin_lock_irqsave(&pm8001_ha->lock, flags); } else { - n_elem = t->num_scatter; + task->task_done(task); } + rc = -ENODEV; + goto err_out; + } - t->lldd_task = ccb; - ccb->n_elem = n_elem; - ccb->ccb_tag = tag; - ccb->task = t; - switch (t->task_proto) { - case SAS_PROTOCOL_SMP: - rc = pm8001_task_prep_smp(pm8001_ha, ccb); - break; - case SAS_PROTOCOL_SSP: - if (is_tmf) - rc = pm8001_task_prep_ssp_tm(pm8001_ha, - ccb, tmf); - else - rc = pm8001_task_prep_ssp(pm8001_ha, ccb); - break; - case SAS_PROTOCOL_SATA: - case SAS_PROTOCOL_STP: - case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: - rc = pm8001_task_prep_ata(pm8001_ha, ccb); - break; - default: - dev_printk(KERN_ERR, pm8001_ha->dev, - "unknown sas_task proto: 0x%x\n", - t->task_proto); - rc = -EINVAL; - break; - } + ccb = pm8001_ccb_alloc(pm8001_ha, pm8001_dev, task); + if (!ccb) { + rc = -SAS_QUEUE_FULL; + goto err_out; + } - if (rc) { - PM8001_IO_DBG(pm8001_ha, - pm8001_printk("rc is %x\n", rc)); - goto err_out_tag; + if (!sas_protocol_ata(task_proto)) { + if (task->num_scatter) { + n_elem = dma_map_sg(pm8001_ha->dev, task->scatter, + task->num_scatter, task->data_dir); + if (!n_elem) { + rc = -ENOMEM; + goto err_out_ccb; + } } - /* TODO: select normal or high priority */ - spin_lock(&t->task_state_lock); - t->task_state_flags |= SAS_TASK_AT_INITIATOR; - spin_unlock(&t->task_state_lock); - pm8001_dev->running_req++; - if (n > 1) - t = list_entry(t->list.next, struct sas_task, list); - } while (--n); - rc = 0; - goto out_done; - -err_out_tag: - pm8001_tag_free(pm8001_ha, tag); + } else { + n_elem = task->num_scatter; + } + + task->lldd_task = ccb; + ccb->n_elem = n_elem; + + atomic_inc(&pm8001_dev->running_req); + + rc = pm8001_deliver_command(pm8001_ha, ccb); + if (rc) { + atomic_dec(&pm8001_dev->running_req); + if (!sas_protocol_ata(task_proto) && n_elem) + dma_unmap_sg(pm8001_ha->dev, task->scatter, + task->num_scatter, task->data_dir); +err_out_ccb: + pm8001_ccb_free(pm8001_ha, ccb); + err_out: - dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc); - if (!sas_protocol_ata(t->task_proto)) - if (n_elem) - dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem, - t->data_dir); -out_done: - spin_unlock_irqrestore(&pm8001_ha->lock, flags); - return rc; -} + pm8001_dbg(pm8001_ha, IO, "pm8001_task_exec failed[%d]!\n", rc); + } -/** - * pm8001_queue_command - register for upper layer used, all IO commands sent - * to HBA are from this interface. - * @task: the task to be execute. - * @num: if can_queue great than 1, the task can be queued up. for SMP task, - * we always execute one one time - * @gfp_flags: gfp_flags - */ -int pm8001_queue_command(struct sas_task *task, const int num, - gfp_t gfp_flags) -{ - return pm8001_task_exec(task, num, gfp_flags, 0, NULL); -} + spin_unlock_irqrestore(&pm8001_ha->lock, flags); -void pm8001_ccb_free(struct pm8001_hba_info *pm8001_ha, u32 ccb_idx) -{ - pm8001_tag_clear(pm8001_ha, ccb_idx); + return rc; } /** * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb. * @pm8001_ha: our hba card information - * @ccb: the ccb which attached to ssp task - * @task: the task to be free. - * @ccb_idx: ccb index. + * @ccb: the ccb which attached to ssp task to free */ void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha, - struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx) + struct pm8001_ccb_info *ccb) { - if (!ccb->task) + struct sas_task *task = ccb->task; + struct ata_queued_cmd *qc; + struct pm8001_device *pm8001_dev; + + if (!task) return; - if (!sas_protocol_ata(task->task_proto)) - if (ccb->n_elem) - dma_unmap_sg(pm8001_ha->dev, task->scatter, - task->num_scatter, task->data_dir); + + if (!sas_protocol_ata(task->task_proto) && ccb->n_elem) + dma_unmap_sg(pm8001_ha->dev, task->scatter, + task->num_scatter, task->data_dir); switch (task->task_proto) { case SAS_PROTOCOL_SMP: dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1, - PCI_DMA_FROMDEVICE); + DMA_FROM_DEVICE); dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1, - PCI_DMA_TODEVICE); + DMA_TO_DEVICE); break; case SAS_PROTOCOL_SATA: @@ -538,36 +605,55 @@ void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha, /* do nothing */ break; } + + if (sas_protocol_ata(task->task_proto)) { + /* For SCSI/ATA commands uldd_task points to ata_queued_cmd */ + qc = task->uldd_task; + pm8001_dev = ccb->device; + trace_pm80xx_request_complete(pm8001_ha->id, + pm8001_dev ? pm8001_dev->attached_phy : PM8001_MAX_PHYS, + ccb->ccb_tag, 0 /* ctlr_opcode not known */, + qc ? qc->tf.command : 0, // ata opcode + pm8001_dev ? atomic_read(&pm8001_dev->running_req) : -1); + } + task->lldd_task = NULL; - ccb->task = NULL; - ccb->ccb_tag = 0xFFFFFFFF; - ccb->open_retry = 0; - pm8001_ccb_free(pm8001_ha, ccb_idx); + pm8001_ccb_free(pm8001_ha, ccb); } - /** - * pm8001_alloc_dev - find a empty pm8001_device - * @pm8001_ha: our hba card information - */ -struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha) +static void pm8001_init_dev(struct pm8001_device *pm8001_dev, int id) +{ + pm8001_dev->id = id; + pm8001_dev->device_id = PM8001_MAX_DEVICES; + atomic_set(&pm8001_dev->running_req, 0); +} + +/** + * pm8001_alloc_dev - find a empty pm8001_device + * @pm8001_ha: our hba card information + */ +static struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha) { u32 dev; for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) { - if (pm8001_ha->devices[dev].dev_type == SAS_PHY_UNUSED) { - pm8001_ha->devices[dev].id = dev; - return &pm8001_ha->devices[dev]; + struct pm8001_device *pm8001_dev = &pm8001_ha->devices[dev]; + + if (pm8001_dev->dev_type == SAS_PHY_UNUSED) { + pm8001_init_dev(pm8001_dev, dev); + return pm8001_dev; } } if (dev == PM8001_MAX_DEVICES) { - PM8001_FAIL_DBG(pm8001_ha, - pm8001_printk("max support %d devices, ignore ..\n", - PM8001_MAX_DEVICES)); + pm8001_dbg(pm8001_ha, FAIL, + "max support %d devices, ignore ..\n", + PM8001_MAX_DEVICES); } return NULL; } /** * pm8001_find_dev - find a matching pm8001_device * @pm8001_ha: our hba card information + * @device_id: device ID to match against */ struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha, u32 device_id) @@ -578,17 +664,14 @@ struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha, return &pm8001_ha->devices[dev]; } if (dev == PM8001_MAX_DEVICES) { - PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("NO MATCHING " - "DEVICE FOUND !!!\n")); + pm8001_dbg(pm8001_ha, FAIL, "NO MATCHING DEVICE FOUND !!!\n"); } return NULL; } -static void pm8001_free_dev(struct pm8001_device *pm8001_dev) +void pm8001_free_dev(struct pm8001_device *pm8001_dev) { - u32 id = pm8001_dev->id; memset(pm8001_dev, 0, sizeof(*pm8001_dev)); - pm8001_dev->id = id; pm8001_dev->dev_type = SAS_PHY_UNUSED; pm8001_dev->device_id = PM8001_MAX_DEVICES; pm8001_dev->sas_device = NULL; @@ -627,33 +710,27 @@ static int pm8001_dev_found_notify(struct domain_device *dev) dev->lldd_dev = pm8001_device; pm8001_device->dev_type = dev->dev_type; pm8001_device->dcompletion = &completion; - if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { + if (dev_parent_is_expander(dev)) { int phy_id; - struct ex_phy *phy; - for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys; - phy_id++) { - phy = &parent_dev->ex_dev.ex_phy[phy_id]; - if (SAS_ADDR(phy->attached_sas_addr) - == SAS_ADDR(dev->sas_addr)) { - pm8001_device->attached_phy = phy_id; - break; - } - } - if (phy_id == parent_dev->ex_dev.num_phys) { - PM8001_FAIL_DBG(pm8001_ha, - pm8001_printk("Error: no attached dev:%016llx" - " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr), - SAS_ADDR(parent_dev->sas_addr))); - res = -1; + + phy_id = sas_find_attached_phy_id(&parent_dev->ex_dev, dev); + if (phy_id < 0) { + pm8001_dbg(pm8001_ha, FAIL, + "Error: no attached dev:%016llx at ex:%016llx.\n", + SAS_ADDR(dev->sas_addr), + SAS_ADDR(parent_dev->sas_addr)); + res = phy_id; + } else { + pm8001_device->attached_phy = phy_id; } } else { if (dev->dev_type == SAS_SATA_DEV) { pm8001_device->attached_phy = dev->rphy->identify.phy_identifier; - flag = 1; /* directly sata*/ + flag = 1; /* directly sata */ } } /*register this device to HBA*/ - PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device\n")); + pm8001_dbg(pm8001_ha, DISC, "Found device\n"); PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag); spin_unlock_irqrestore(&pm8001_ha->lock, flags); wait_for_completion(&completion); @@ -671,185 +748,7 @@ int pm8001_dev_found(struct domain_device *dev) return pm8001_dev_found_notify(dev); } -void pm8001_task_done(struct sas_task *task) -{ - if (!del_timer(&task->slow_task->timer)) - return; - complete(&task->slow_task->completion); -} - -static void pm8001_tmf_timedout(unsigned long data) -{ - struct sas_task *task = (struct sas_task *)data; - - task->task_state_flags |= SAS_TASK_STATE_ABORTED; - complete(&task->slow_task->completion); -} - #define PM8001_TASK_TIMEOUT 20 -/** - * pm8001_exec_internal_tmf_task - execute some task management commands. - * @dev: the wanted device. - * @tmf: which task management wanted to be take. - * @para_len: para_len. - * @parameter: ssp task parameter. - * - * when errors or exception happened, we may want to do something, for example - * abort the issued task which result in this execption, it is done by calling - * this function, note it is also with the task execute interface. - */ -static int pm8001_exec_internal_tmf_task(struct domain_device *dev, - void *parameter, u32 para_len, struct pm8001_tmf_task *tmf) -{ - int res, retry; - struct sas_task *task = NULL; - struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); - - for (retry = 0; retry < 3; retry++) { - task = sas_alloc_slow_task(GFP_KERNEL); - if (!task) - return -ENOMEM; - - task->dev = dev; - task->task_proto = dev->tproto; - memcpy(&task->ssp_task, parameter, para_len); - task->task_done = pm8001_task_done; - task->slow_task->timer.data = (unsigned long)task; - task->slow_task->timer.function = pm8001_tmf_timedout; - task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ; - add_timer(&task->slow_task->timer); - - res = pm8001_task_exec(task, 1, GFP_KERNEL, 1, tmf); - - if (res) { - del_timer(&task->slow_task->timer); - PM8001_FAIL_DBG(pm8001_ha, - pm8001_printk("Executing internal task " - "failed\n")); - 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)) { - PM8001_FAIL_DBG(pm8001_ha, - pm8001_printk("TMF task[%x]timeout.\n", - tmf->tmf)); - goto ex_err; - } - } - - if (task->task_status.resp == SAS_TASK_COMPLETE && - task->task_status.stat == SAM_STAT_GOOD) { - res = TMF_RESP_FUNC_COMPLETE; - 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 */ - res = task->task_status.residual; - break; - } - - if (task->task_status.resp == SAS_TASK_COMPLETE && - task->task_status.stat == SAS_DATA_OVERRUN) { - PM8001_FAIL_DBG(pm8001_ha, - pm8001_printk("Blocked task error.\n")); - res = -EMSGSIZE; - break; - } else { - PM8001_EH_DBG(pm8001_ha, - pm8001_printk(" Task to dev %016llx response:" - "0x%x status 0x%x\n", - SAS_ADDR(dev->sas_addr), - task->task_status.resp, - task->task_status.stat)); - sas_free_task(task); - task = NULL; - } - } -ex_err: - BUG_ON(retry == 3 && task != NULL); - sas_free_task(task); - return res; -} - -static int -pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, - struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag, - u32 task_tag) -{ - int res, retry; - u32 ccb_tag; - struct pm8001_ccb_info *ccb; - struct sas_task *task = NULL; - - for (retry = 0; retry < 3; retry++) { - task = sas_alloc_slow_task(GFP_KERNEL); - if (!task) - return -ENOMEM; - - task->dev = dev; - task->task_proto = dev->tproto; - task->task_done = pm8001_task_done; - task->slow_task->timer.data = (unsigned long)task; - task->slow_task->timer.function = pm8001_tmf_timedout; - task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ; - add_timer(&task->slow_task->timer); - - res = pm8001_tag_alloc(pm8001_ha, &ccb_tag); - if (res) - return res; - ccb = &pm8001_ha->ccb_info[ccb_tag]; - ccb->device = pm8001_dev; - ccb->ccb_tag = ccb_tag; - ccb->task = task; - - res = PM8001_CHIP_DISP->task_abort(pm8001_ha, - pm8001_dev, flag, task_tag, ccb_tag); - - if (res) { - del_timer(&task->slow_task->timer); - PM8001_FAIL_DBG(pm8001_ha, - pm8001_printk("Executing internal task " - "failed\n")); - 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)) { - PM8001_FAIL_DBG(pm8001_ha, - pm8001_printk("TMF task timeout.\n")); - goto ex_err; - } - } - - if (task->task_status.resp == SAS_TASK_COMPLETE && - task->task_status.stat == SAM_STAT_GOOD) { - res = TMF_RESP_FUNC_COMPLETE; - break; - - } else { - PM8001_EH_DBG(pm8001_ha, - pm8001_printk(" Task to dev %016llx response: " - "0x%x status 0x%x\n", - SAS_ADDR(dev->sas_addr), - task->task_status.resp, - task->task_status.stat)); - sas_free_task(task); - task = NULL; - } - } -ex_err: - BUG_ON(retry == 3 && task != NULL); - sas_free_task(task); - return res; -} /** * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify" @@ -858,30 +757,37 @@ ex_err: static void pm8001_dev_gone_notify(struct domain_device *dev) { unsigned long flags = 0; - u32 tag; struct pm8001_hba_info *pm8001_ha; struct pm8001_device *pm8001_dev = dev->lldd_dev; pm8001_ha = pm8001_find_ha_by_dev(dev); spin_lock_irqsave(&pm8001_ha->lock, flags); - pm8001_tag_alloc(pm8001_ha, &tag); if (pm8001_dev) { u32 device_id = pm8001_dev->device_id; - PM8001_DISC_DBG(pm8001_ha, - pm8001_printk("found dev[%d:%x] is gone.\n", - pm8001_dev->device_id, pm8001_dev->dev_type)); - if (pm8001_dev->running_req) { + pm8001_dbg(pm8001_ha, DISC, "found dev[%d:%x] is gone.\n", + pm8001_dev->device_id, pm8001_dev->dev_type); + if (atomic_read(&pm8001_dev->running_req)) { spin_unlock_irqrestore(&pm8001_ha->lock, flags); - pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , - dev, 1, 0); + sas_execute_internal_abort_dev(dev, 0, NULL); + while (atomic_read(&pm8001_dev->running_req)) + msleep(20); spin_lock_irqsave(&pm8001_ha->lock, flags); } PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id); + + /* + * The phy array only contains local phys. Thus, we cannot clear + * phy_attached for a device behind an expander. + */ + if (!dev_parent_is_expander(dev)) { + u32 phy_id = pm80xx_get_local_phy_id(dev); + + pm8001_ha->phy[phy_id].phy_attached = 0; + } pm8001_free_dev(pm8001_dev); } else { - PM8001_DISC_DBG(pm8001_ha, - pm8001_printk("Found dev has gone.\n")); + pm8001_dbg(pm8001_ha, DISC, "Found dev has gone.\n"); } dev->lldd_dev = NULL; spin_unlock_irqrestore(&pm8001_ha->lock, flags); @@ -892,18 +798,6 @@ void pm8001_dev_gone(struct domain_device *dev) pm8001_dev_gone_notify(dev); } -static int pm8001_issue_ssp_tmf(struct domain_device *dev, - u8 *lun, struct pm8001_tmf_task *tmf) -{ - struct sas_ssp_task ssp_task; - if (!(dev->tproto & SAS_PROTOCOL_SSP)) - return TMF_RESP_FUNC_ESUPP; - - strncpy((u8 *)&ssp_task.LUN, lun, 8); - return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task), - tmf); -} - /* retry commands by ha, by task and/or by device */ void pm8001_open_reject_retry( struct pm8001_hba_info *pm8001_ha, @@ -923,9 +817,11 @@ void pm8001_open_reject_retry( struct task_status_struct *ts; struct pm8001_device *pm8001_dev; unsigned long flags1; - u32 tag; struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i]; + if (ccb->ccb_tag == PM8001_INVALID_TAG) + continue; + pm8001_dev = ccb->device; if (!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)) continue; @@ -937,9 +833,6 @@ void pm8001_open_reject_retry( continue; } else if (pm8001_dev != device_to_close) continue; - tag = ccb->ccb_tag; - if (!tag || (tag == 0xFFFFFFFF)) - continue; task = ccb->task; if (!task || !task->task_done) continue; @@ -951,20 +844,19 @@ void pm8001_open_reject_retry( ts->stat = SAS_OPEN_REJECT; ts->open_rej_reason = SAS_OREJ_RSVD_RETRY; if (pm8001_dev) - pm8001_dev->running_req--; + atomic_dec(&pm8001_dev->running_req); spin_lock_irqsave(&task->task_state_lock, flags1); task->task_state_flags &= ~SAS_TASK_STATE_PENDING; - task->task_state_flags &= ~SAS_TASK_AT_INITIATOR; task->task_state_flags |= SAS_TASK_STATE_DONE; if (unlikely((task->task_state_flags & SAS_TASK_STATE_ABORTED))) { spin_unlock_irqrestore(&task->task_state_lock, flags1); - pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, ccb); } else { spin_unlock_irqrestore(&task->task_state_lock, flags1); - pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); + pm8001_ccb_task_free(pm8001_ha, ccb); mb();/* in order to force CPU ordering */ spin_unlock_irqrestore(&pm8001_ha->lock, flags); task->task_done(task); @@ -976,9 +868,12 @@ void pm8001_open_reject_retry( } /** - * Standard mandates link reset for ATA (type 0) and hard reset for - * SSP (type 1) , only for RECOVERY - */ + * pm8001_I_T_nexus_reset() - reset the initiator/target connection + * @dev: the device structure for the device to reset. + * + * Standard mandates link reset for ATA (type 0) and hard reset for + * SSP (type 1), only for RECOVERY + */ int pm8001_I_T_nexus_reset(struct domain_device *dev) { int rc = TMF_RESP_FUNC_FAILED; @@ -994,25 +889,31 @@ int pm8001_I_T_nexus_reset(struct domain_device *dev) phy = sas_get_local_phy(dev); if (dev_is_sata(dev)) { - DECLARE_COMPLETION_ONSTACK(completion_setstate); if (scsi_is_sas_phy_local(phy)) { rc = 0; goto out; } rc = sas_phy_reset(phy, 1); + if (rc) { + pm8001_dbg(pm8001_ha, EH, + "phy reset failed for device %x\n" + "with rc %d\n", pm8001_dev->device_id, rc); + rc = TMF_RESP_FUNC_FAILED; + goto out; + } msleep(2000); - rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , - dev, 1, 0); - pm8001_dev->setds_completion = &completion_setstate; - rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, - pm8001_dev, 0x01); - wait_for_completion(&completion_setstate); + rc = sas_execute_internal_abort_dev(dev, 0, NULL); + if (rc) { + pm8001_dbg(pm8001_ha, EH, "task abort failed %x\n" + "with rc %d\n", pm8001_dev->device_id, rc); + rc = TMF_RESP_FUNC_FAILED; + } } else { rc = sas_phy_reset(phy, 1); msleep(2000); } - PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n", - pm8001_dev->device_id, rc)); + pm8001_dbg(pm8001_ha, EH, " for device[%x]:rc=%d\n", + pm8001_dev->device_id, rc); out: sas_put_local_phy(phy); return rc; @@ -1028,17 +929,14 @@ int pm8001_I_T_nexus_event_handler(struct domain_device *dev) struct pm8001_device *pm8001_dev; struct pm8001_hba_info *pm8001_ha; struct sas_phy *phy; - u32 device_id = 0; if (!dev || !dev->lldd_dev) return -1; pm8001_dev = dev->lldd_dev; - device_id = pm8001_dev->device_id; pm8001_ha = pm8001_find_ha_by_dev(dev); - PM8001_EH_DBG(pm8001_ha, - pm8001_printk("I_T_Nexus handler invoked !!")); + pm8001_dbg(pm8001_ha, EH, "I_T_Nexus handler invoked !!\n"); phy = sas_get_local_phy(dev); @@ -1049,8 +947,7 @@ int pm8001_I_T_nexus_event_handler(struct domain_device *dev) goto out; } /* send internal ssp/sata/smp abort command to FW */ - rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , - dev, 1, 0); + sas_execute_internal_abort_dev(dev, 0, NULL); msleep(100); /* deregister the target device */ @@ -1065,8 +962,7 @@ int pm8001_I_T_nexus_event_handler(struct domain_device *dev) wait_for_completion(&completion_setstate); } else { /* send internal ssp/sata/smp abort command to FW */ - rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , - dev, 1, 0); + sas_execute_internal_abort_dev(dev, 0, NULL); msleep(100); /* deregister the target device */ @@ -1077,8 +973,8 @@ int pm8001_I_T_nexus_event_handler(struct domain_device *dev) rc = sas_phy_reset(phy, 1); msleep(2000); } - PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n", - pm8001_dev->device_id, rc)); + pm8001_dbg(pm8001_ha, EH, " for device[%x]:rc=%d\n", + pm8001_dev->device_id, rc); out: sas_put_local_phy(phy); @@ -1088,25 +984,35 @@ out: int pm8001_lu_reset(struct domain_device *dev, u8 *lun) { int rc = TMF_RESP_FUNC_FAILED; - struct pm8001_tmf_task tmf_task; struct pm8001_device *pm8001_dev = dev->lldd_dev; struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); + DECLARE_COMPLETION_ONSTACK(completion_setstate); + + if (PM8001_CHIP_DISP->fatal_errors(pm8001_ha)) { + /* + * If the controller is in fatal error state, + * we will not get a response from the controller + */ + pm8001_dbg(pm8001_ha, FAIL, + "LUN reset failed due to fatal errors\n"); + return rc; + } + if (dev_is_sata(dev)) { struct sas_phy *phy = sas_get_local_phy(dev); - rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , - dev, 1, 0); + sas_execute_internal_abort_dev(dev, 0, NULL); rc = sas_phy_reset(phy, 1); sas_put_local_phy(phy); + pm8001_dev->setds_completion = &completion_setstate; rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, - pm8001_dev, 0x01); - msleep(2000); + pm8001_dev, DS_OPERATIONAL); + wait_for_completion(&completion_setstate); } else { - tmf_task.tmf = TMF_LU_RESET; - rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); + rc = sas_lu_reset(dev, lun); } /* If failed, fall-through I_T_Nexus reset */ - PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n", - pm8001_dev->device_id, rc)); + pm8001_dbg(pm8001_ha, EH, "for device[%x]:rc=%d\n", + pm8001_dev->device_id, rc); return rc; } @@ -1114,9 +1020,6 @@ int pm8001_lu_reset(struct domain_device *dev, u8 *lun) int pm8001_query_task(struct sas_task *task) { u32 tag = 0xdeadbeef; - int i = 0; - struct scsi_lun lun; - struct pm8001_tmf_task tmf_task; int rc = TMF_RESP_FUNC_FAILED; if (unlikely(!task || !task->lldd_task || !task->dev)) return rc; @@ -1127,149 +1030,234 @@ int pm8001_query_task(struct sas_task *task) struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); - int_to_scsilun(cmnd->device->lun, &lun); rc = pm8001_find_tag(task, &tag); if (rc == 0) { rc = TMF_RESP_FUNC_FAILED; return rc; } - PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:[")); - for (i = 0; i < 16; i++) - printk(KERN_INFO "%02x ", cmnd->cmnd[i]); - printk(KERN_INFO "]\n"); - tmf_task.tmf = TMF_QUERY_TASK; - tmf_task.tag_of_task_to_be_managed = tag; - - rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); + pm8001_dbg(pm8001_ha, EH, "Query:[%16ph]\n", cmnd->cmnd); + + rc = sas_query_task(task, tag); switch (rc) { /* The task is still in Lun, release it then */ case TMF_RESP_FUNC_SUCC: - PM8001_EH_DBG(pm8001_ha, - pm8001_printk("The task is still in Lun\n")); + pm8001_dbg(pm8001_ha, EH, + "The task is still in Lun\n"); break; /* The task is not in Lun or failed, reset the phy */ case TMF_RESP_FUNC_FAILED: case TMF_RESP_FUNC_COMPLETE: - PM8001_EH_DBG(pm8001_ha, - pm8001_printk("The task is not in Lun or failed," - " reset the phy\n")); + pm8001_dbg(pm8001_ha, EH, + "The task is not in Lun or failed, reset the phy\n"); break; } } - pm8001_printk(":rc= %d\n", rc); + pr_err("pm80xx: rc= %d\n", rc); return rc; } -/* mandatory SAM-3, still need free task/ccb info, abord the specified task */ +/* mandatory SAM-3, still need free task/ccb info, abort the specified task */ int pm8001_abort_task(struct sas_task *task) { + struct pm8001_ccb_info *ccb = task->lldd_task; unsigned long flags; - u32 tag = 0xdeadbeef; - u32 device_id; + u32 tag; struct domain_device *dev ; - struct pm8001_hba_info *pm8001_ha = NULL; - struct pm8001_ccb_info *ccb; - struct scsi_lun lun; + struct pm8001_hba_info *pm8001_ha; struct pm8001_device *pm8001_dev; - struct pm8001_tmf_task tmf_task; - int rc = TMF_RESP_FUNC_FAILED; - if (unlikely(!task || !task->lldd_task || !task->dev)) - return rc; + int rc = TMF_RESP_FUNC_FAILED, ret; + u32 port_id; + struct sas_task_slow slow_task; + + if (!task->lldd_task || !task->dev) + return TMF_RESP_FUNC_FAILED; + + dev = task->dev; + pm8001_dev = dev->lldd_dev; + pm8001_ha = pm8001_find_ha_by_dev(dev); + + if (PM8001_CHIP_DISP->fatal_errors(pm8001_ha)) { + // If the controller is seeing fatal errors + // abort task will not get a response from the controller + return TMF_RESP_FUNC_FAILED; + } + + ret = pm8001_find_tag(task, &tag); + if (ret == 0) { + pm8001_info(pm8001_ha, "no tag for task:%p\n", task); + return TMF_RESP_FUNC_FAILED; + } spin_lock_irqsave(&task->task_state_lock, flags); if (task->task_state_flags & SAS_TASK_STATE_DONE) { spin_unlock_irqrestore(&task->task_state_lock, flags); - rc = TMF_RESP_FUNC_COMPLETE; - goto out; + return TMF_RESP_FUNC_COMPLETE; + } + task->task_state_flags |= SAS_TASK_STATE_ABORTED; + if (task->slow_task == NULL) { + init_completion(&slow_task.completion); + task->slow_task = &slow_task; } spin_unlock_irqrestore(&task->task_state_lock, flags); if (task->task_proto & SAS_PROTOCOL_SSP) { - struct scsi_cmnd *cmnd = task->uldd_task; - dev = task->dev; - ccb = task->lldd_task; - pm8001_dev = dev->lldd_dev; - pm8001_ha = pm8001_find_ha_by_dev(dev); - int_to_scsilun(cmnd->device->lun, &lun); - rc = pm8001_find_tag(task, &tag); - if (rc == 0) { - printk(KERN_INFO "No such tag in %s\n", __func__); - rc = TMF_RESP_FUNC_FAILED; - return rc; - } - device_id = pm8001_dev->device_id; - PM8001_EH_DBG(pm8001_ha, - pm8001_printk("abort io to deviceid= %d\n", device_id)); - tmf_task.tmf = TMF_ABORT_TASK; - tmf_task.tag_of_task_to_be_managed = tag; - rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); - pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, - pm8001_dev->sas_device, 0, tag); + rc = sas_abort_task(task, tag); + sas_execute_internal_abort_single(dev, tag, 0, NULL); } else if (task->task_proto & SAS_PROTOCOL_SATA || task->task_proto & SAS_PROTOCOL_STP) { - dev = task->dev; - pm8001_dev = dev->lldd_dev; - pm8001_ha = pm8001_find_ha_by_dev(dev); - rc = pm8001_find_tag(task, &tag); - if (rc == 0) { - printk(KERN_INFO "No such tag in %s\n", __func__); - rc = TMF_RESP_FUNC_FAILED; - return rc; + if (pm8001_ha->chip_id == chip_8006) { + DECLARE_COMPLETION_ONSTACK(completion_reset); + DECLARE_COMPLETION_ONSTACK(completion); + u32 phy_id = pm80xx_get_local_phy_id(dev); + struct pm8001_phy *phy = &pm8001_ha->phy[phy_id]; + port_id = phy->port->port_id; + + /* 1. Set Device state as Recovery */ + pm8001_dev->setds_completion = &completion; + PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, + pm8001_dev, DS_IN_RECOVERY); + wait_for_completion(&completion); + + /* 2. Send Phy Control Hard Reset */ + reinit_completion(&completion); + phy->port_reset_status = PORT_RESET_TMO; + phy->reset_success = false; + phy->enable_completion = &completion; + phy->reset_completion = &completion_reset; + ret = PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id, + PHY_HARD_RESET); + if (ret) { + phy->enable_completion = NULL; + phy->reset_completion = NULL; + goto out; + } + + /* In the case of the reset timeout/fail we still + * abort the command at the firmware. The assumption + * here is that the drive is off doing something so + * that it's not processing requests, and we want to + * avoid getting a completion for this and either + * leaking the task in libsas or losing the race and + * getting a double free. + */ + pm8001_dbg(pm8001_ha, MSG, + "Waiting for local phy ctl\n"); + ret = wait_for_completion_timeout(&completion, + PM8001_TASK_TIMEOUT * HZ); + if (!ret || !phy->reset_success) { + phy->enable_completion = NULL; + phy->reset_completion = NULL; + } else { + /* 3. Wait for Port Reset complete or + * Port reset TMO + */ + pm8001_dbg(pm8001_ha, MSG, + "Waiting for Port reset\n"); + ret = wait_for_completion_timeout( + &completion_reset, + PM8001_TASK_TIMEOUT * HZ); + if (!ret) + phy->reset_completion = NULL; + WARN_ON(phy->port_reset_status == + PORT_RESET_TMO); + if (phy->port_reset_status == PORT_RESET_TMO) { + pm8001_dev_gone_notify(dev); + PM8001_CHIP_DISP->hw_event_ack_req( + pm8001_ha, 0, + 0x07, /*HW_EVENT_PHY_DOWN ack*/ + port_id, phy_id, 0, 0); + goto out; + } + } + + /* + * 4. SATA Abort ALL + * we wait for the task to be aborted so that the task + * is removed from the ccb. on success the caller is + * going to free the task. + */ + ret = sas_execute_internal_abort_dev(dev, 0, NULL); + if (ret) + goto out; + ret = wait_for_completion_timeout( + &task->slow_task->completion, + PM8001_TASK_TIMEOUT * HZ); + if (!ret) + goto out; + + /* 5. Set Device State as Operational */ + reinit_completion(&completion); + pm8001_dev->setds_completion = &completion; + PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, + pm8001_dev, DS_OPERATIONAL); + wait_for_completion(&completion); + } else { + /* + * Ensure that if we see a completion for the ccb + * associated with the task which we are trying to + * abort then we should not touch the sas_task as it + * may race with libsas freeing it when return here. + */ + ccb->task = NULL; + ret = sas_execute_internal_abort_single(dev, tag, 0, NULL); } - rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, - pm8001_dev->sas_device, 0, tag); + rc = TMF_RESP_FUNC_COMPLETE; } else if (task->task_proto & SAS_PROTOCOL_SMP) { /* SMP */ - dev = task->dev; - pm8001_dev = dev->lldd_dev; - pm8001_ha = pm8001_find_ha_by_dev(dev); - rc = pm8001_find_tag(task, &tag); - if (rc == 0) { - printk(KERN_INFO "No such tag in %s\n", __func__); - rc = TMF_RESP_FUNC_FAILED; - return rc; - } - rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, - pm8001_dev->sas_device, 0, tag); + rc = sas_execute_internal_abort_single(dev, tag, 0, NULL); } out: + spin_lock_irqsave(&task->task_state_lock, flags); + if (task->slow_task == &slow_task) + task->slow_task = NULL; + spin_unlock_irqrestore(&task->task_state_lock, flags); if (rc != TMF_RESP_FUNC_COMPLETE) - pm8001_printk("rc= %d\n", rc); + pm8001_info(pm8001_ha, "rc= %d\n", rc); return rc; } -int pm8001_abort_task_set(struct domain_device *dev, u8 *lun) +int pm8001_clear_task_set(struct domain_device *dev, u8 *lun) { - int rc = TMF_RESP_FUNC_FAILED; - struct pm8001_tmf_task tmf_task; + struct pm8001_device *pm8001_dev = dev->lldd_dev; + struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); - tmf_task.tmf = TMF_ABORT_TASK_SET; - rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); - return rc; + pm8001_dbg(pm8001_ha, EH, "I_T_L_Q clear task set[%x]\n", + pm8001_dev->device_id); + return sas_clear_task_set(dev, lun); } -int pm8001_clear_aca(struct domain_device *dev, u8 *lun) +void pm8001_port_formed(struct asd_sas_phy *sas_phy) { - int rc = TMF_RESP_FUNC_FAILED; - struct pm8001_tmf_task tmf_task; - - tmf_task.tmf = TMF_CLEAR_ACA; - rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); - - return rc; + struct sas_ha_struct *sas_ha = sas_phy->ha; + struct pm8001_hba_info *pm8001_ha = sas_ha->lldd_ha; + struct pm8001_phy *phy = sas_phy->lldd_phy; + struct asd_sas_port *sas_port = sas_phy->port; + struct pm8001_port *port = phy->port; + + if (!sas_port) { + pm8001_dbg(pm8001_ha, FAIL, "Received null port\n"); + return; + } + sas_port->lldd_port = port; } -int pm8001_clear_task_set(struct domain_device *dev, u8 *lun) +void pm8001_setds_completion(struct domain_device *dev) { - int rc = TMF_RESP_FUNC_FAILED; - struct pm8001_tmf_task tmf_task; - struct pm8001_device *pm8001_dev = dev->lldd_dev; struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); + struct pm8001_device *pm8001_dev = dev->lldd_dev; + DECLARE_COMPLETION_ONSTACK(completion_setstate); - PM8001_EH_DBG(pm8001_ha, - pm8001_printk("I_T_L_Q clear task set[%x]\n", - pm8001_dev->device_id)); - tmf_task.tmf = TMF_CLEAR_TASK_SET; - rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); - return rc; + if (pm8001_ha->chip_id != chip_8001) { + pm8001_dev->setds_completion = &completion_setstate; + PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, + pm8001_dev, DS_OPERATIONAL); + wait_for_completion(&completion_setstate); + } } +void pm8001_tmf_aborted(struct sas_task *task) +{ + struct pm8001_ccb_info *ccb = task->lldd_task; + + if (ccb) + ccb->task = NULL; +} |