pm8001_sas.c 37.3 KB
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/*
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 * PMC-Sierra PM8001/8081/8088/8089 SAS/SATA based host adapters driver
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 *
 * Copyright (c) 2008-2009 USI Co., Ltd.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 */

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#include <linux/slab.h>
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#include "pm8001_sas.h"

/**
 * pm8001_find_tag - from sas task to find out  tag that belongs to this task
 * @task: the task sent to the LLDD
 * @tag: the found tag associated with the task
 */
static int pm8001_find_tag(struct sas_task *task, u32 *tag)
{
	if (task->lldd_task) {
		struct pm8001_ccb_info *ccb;
		ccb = task->lldd_task;
		*tag = ccb->ccb_tag;
		return 1;
	}
	return 0;
}

/**
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  * pm8001_tag_free - free the no more needed tag
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  * @pm8001_ha: our hba struct
  * @tag: the found tag associated with the task
  */
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void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
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{
	void *bitmap = pm8001_ha->tags;
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	clear_bit(tag, bitmap);
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}

/**
  * pm8001_tag_alloc - allocate a empty tag for task used.
  * @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)
{
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	unsigned int tag;
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	void *bitmap = pm8001_ha->tags;
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	unsigned long flags;
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	spin_lock_irqsave(&pm8001_ha->bitmap_lock, flags);
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	tag = find_first_zero_bit(bitmap, pm8001_ha->tags_num);
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	if (tag >= pm8001_ha->tags_num) {
		spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags);
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		return -SAS_QUEUE_FULL;
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	}
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	set_bit(tag, bitmap);
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	spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags);
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	*tag_out = tag;
	return 0;
}

void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha)
{
	int i;
	for (i = 0; i < pm8001_ha->tags_num; ++i)
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		pm8001_tag_free(pm8001_ha, i);
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}

 /**
  * 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.
  */
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)
{
	caddr_t mem_virt_alloc;
	dma_addr_t mem_dma_handle;
	u64 phys_align;
	u64 align_offset = 0;
	if (align)
		align_offset = (dma_addr_t)align - 1;
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	mem_virt_alloc = pci_zalloc_consistent(pdev, mem_size + align,
					       &mem_dma_handle);
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	if (!mem_virt_alloc) {
		pm8001_printk("memory allocation error\n");
		return -1;
	}
	*pphys_addr = mem_dma_handle;
	phys_align = (*pphys_addr + align_offset) & ~align_offset;
	*virt_addr = (void *)mem_virt_alloc + phys_align - *pphys_addr;
	*pphys_addr_hi = upper_32_bits(phys_align);
	*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.
  * @dev: the domain device which from sas layer.
  */
static
struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev)
{
	struct sas_ha_struct *sha = dev->port->ha;
	struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
	return pm8001_ha;
}

/**
  * pm8001_phy_control - this function should be registered to
  * sas_domain_function_template to provide libsas used, note: this is just
  * control the HBA phy rather than other expander phy if you want control
  * other phy, you should use SMP command.
  * @sas_phy: which phy in HBA phys.
  * @func: the operation.
  * @funcdata: always NULL.
  */
int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
	void *funcdata)
{
	int rc = 0, phy_id = sas_phy->id;
	struct pm8001_hba_info *pm8001_ha = NULL;
	struct sas_phy_linkrates *rates;
	DECLARE_COMPLETION_ONSTACK(completion);
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	unsigned long flags;
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	pm8001_ha = sas_phy->ha->lldd_ha;
	pm8001_ha->phy[phy_id].enable_completion = &completion;
	switch (func) {
	case PHY_FUNC_SET_LINK_RATE:
		rates = funcdata;
		if (rates->minimum_linkrate) {
			pm8001_ha->phy[phy_id].minimum_linkrate =
				rates->minimum_linkrate;
		}
		if (rates->maximum_linkrate) {
			pm8001_ha->phy[phy_id].maximum_linkrate =
				rates->maximum_linkrate;
		}
		if (pm8001_ha->phy[phy_id].phy_state == 0) {
			PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
			wait_for_completion(&completion);
		}
		PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
					      PHY_LINK_RESET);
		break;
	case PHY_FUNC_HARD_RESET:
		if (pm8001_ha->phy[phy_id].phy_state == 0) {
			PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
			wait_for_completion(&completion);
		}
		PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
					      PHY_HARD_RESET);
		break;
	case PHY_FUNC_LINK_RESET:
		if (pm8001_ha->phy[phy_id].phy_state == 0) {
			PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
			wait_for_completion(&completion);
		}
		PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
					      PHY_LINK_RESET);
		break;
	case PHY_FUNC_RELEASE_SPINUP_HOLD:
		PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
					      PHY_LINK_RESET);
		break;
	case PHY_FUNC_DISABLE:
		PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
		break;
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	case PHY_FUNC_GET_EVENTS:
		spin_lock_irqsave(&pm8001_ha->lock, flags);
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		if (pm8001_ha->chip_id == chip_8001) {
			if (-1 == pm8001_bar4_shift(pm8001_ha,
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					(phy_id < 4) ? 0x30000 : 0x40000)) {
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				spin_unlock_irqrestore(&pm8001_ha->lock, flags);
				return -EINVAL;
			}
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		}
		{
			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];
		}
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		if (pm8001_ha->chip_id == chip_8001)
			pm8001_bar4_shift(pm8001_ha, 0);
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		spin_unlock_irqrestore(&pm8001_ha->lock, flags);
		return 0;
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	default:
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		rc = -EOPNOTSUPP;
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	}
	msleep(300);
	return rc;
}

/**
  * pm8001_scan_start - we should enable all HBA phys by sending the phy_start
  * command to HBA.
  * @shost: the scsi host data.
  */
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);
	pm8001_ha = sha->lldd_ha;
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	/* SAS_RE_INITIALIZATION not available in SPCv/ve */
	if (pm8001_ha->chip_id == chip_8001)
		PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha);
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	for (i = 0; i < pm8001_ha->chip->n_phy; ++i)
		PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i);
}

int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
{
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	struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);

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	/* give the phy enabling interrupt event time to come in (1s
	* is empirically about all it takes) */
	if (time < HZ)
		return 0;
	/* Wait for discovery to finish */
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	sas_drain_work(ha);
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	return 1;
}

/**
  * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task
  * @pm8001_ha: our hba card information
  * @ccb: the ccb which attached to smp task
  */
static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
	struct pm8001_ccb_info *ccb)
{
	return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
}

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 ||
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		    qc->tf.command == ATA_CMD_FPDMA_READ ||
		    qc->tf.command == ATA_CMD_FPDMA_RECV ||
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		    qc->tf.command == ATA_CMD_FPDMA_SEND ||
		    qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
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			*tag = qc->tag;
			return 1;
		}
	}
	return 0;
}

/**
  * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task
  * @pm8001_ha: our hba card information
  * @ccb: the ccb which attached to sata task
  */
static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
	struct pm8001_ccb_info *ccb)
{
	return PM8001_CHIP_DISP->sata_req(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)
{
	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_ha: our hba card information
  * @ccb: the ccb which attached to ssp task
  */
static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
	struct pm8001_ccb_info *ccb)
{
	return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
}
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 /* Find the local port id that's attached to this device */
static int sas_find_local_port_id(struct domain_device *dev)
{
	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;
	}
	return 0;
}

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/**
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  * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware.
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  * @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.
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  * @is_tmf: if it is task management task.
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  * @tmf: the task management IU
  */
#define DEV_IS_GONE(pm8001_dev)	\
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	((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)))
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static int pm8001_task_exec(struct sas_task *task,
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	gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf)
{
	struct domain_device *dev = task->dev;
	struct pm8001_hba_info *pm8001_ha;
	struct pm8001_device *pm8001_dev;
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	struct pm8001_port *port = NULL;
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	struct sas_task *t = task;
	struct pm8001_ccb_info *ccb;
	u32 tag = 0xdeadbeef, rc, n_elem = 0;
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	unsigned long flags = 0;
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	if (!dev->port) {
		struct task_status_struct *tsm = &t->task_status;
		tsm->resp = SAS_TASK_UNDELIVERED;
		tsm->stat = SAS_PHY_DOWN;
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		if (dev->dev_type != SAS_SATA_DEV)
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			t->task_done(t);
		return 0;
	}
	pm8001_ha = pm8001_find_ha_by_dev(task->dev);
	PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n "));
	spin_lock_irqsave(&pm8001_ha->lock, flags);
	do {
		dev = t->dev;
		pm8001_dev = dev->lldd_dev;
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		port = &pm8001_ha->port[sas_find_local_port_id(dev)];
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		if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) {
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			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);
				continue;
			} else {
				struct task_status_struct *ts = &t->task_status;
				ts->resp = SAS_TASK_UNDELIVERED;
				ts->stat = SAS_PHY_DOWN;
				t->task_done(t);
				continue;
			}
		}
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		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;
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					goto err_out_tag;
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				}
			}
		} else {
			n_elem = t->num_scatter;
		}

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		t->lldd_task = ccb;
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		ccb->n_elem = n_elem;
		ccb->ccb_tag = tag;
		ccb->task = t;
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		ccb->device = pm8001_dev;
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		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:
			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;
		}

		if (rc) {
			PM8001_IO_DBG(pm8001_ha,
				pm8001_printk("rc is %x\n", rc));
			goto err_out_tag;
		}
		/* 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++;
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	} while (0);
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	rc = 0;
	goto out_done;

err_out_tag:
	pm8001_tag_free(pm8001_ha, tag);
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_queue_command - register for upper layer used, all IO commands sent
  * to HBA are from this interface.
  * @task: the task to be execute.
  * @gfp_flags: gfp_flags
  */
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int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)
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{
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	return pm8001_task_exec(task, gfp_flags, 0, NULL);
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}

/**
  * 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.
  */
void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
	struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx)
{
	if (!ccb->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);

	switch (task->task_proto) {
	case SAS_PROTOCOL_SMP:
		dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1,
			PCI_DMA_FROMDEVICE);
		dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
			PCI_DMA_TODEVICE);
		break;

	case SAS_PROTOCOL_SATA:
	case SAS_PROTOCOL_STP:
	case SAS_PROTOCOL_SSP:
	default:
		/* do nothing */
		break;
	}
	task->lldd_task = NULL;
	ccb->task = NULL;
	ccb->ccb_tag = 0xFFFFFFFF;
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	ccb->open_retry = 0;
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	pm8001_tag_free(pm8001_ha, ccb_idx);
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}

 /**
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  * pm8001_alloc_dev - find a empty pm8001_device
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  * @pm8001_ha: our hba card information
  */
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static struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
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{
	u32 dev;
	for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
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		if (pm8001_ha->devices[dev].dev_type == SAS_PHY_UNUSED) {
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			pm8001_ha->devices[dev].id = dev;
			return &pm8001_ha->devices[dev];
		}
	}
	if (dev == PM8001_MAX_DEVICES) {
		PM8001_FAIL_DBG(pm8001_ha,
			pm8001_printk("max support %d devices, ignore ..\n",
			PM8001_MAX_DEVICES));
	}
	return NULL;
}
546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563
/**
  * pm8001_find_dev - find a matching pm8001_device
  * @pm8001_ha: our hba card information
  */
struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha,
					u32 device_id)
{
	u32 dev;
	for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
		if (pm8001_ha->devices[dev].device_id == device_id)
			return &pm8001_ha->devices[dev];
	}
	if (dev == PM8001_MAX_DEVICES) {
		PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("NO MATCHING "
				"DEVICE FOUND !!!\n"));
	}
	return NULL;
}
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static 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;
570
	pm8001_dev->dev_type = SAS_PHY_UNUSED;
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	pm8001_dev->device_id = PM8001_MAX_DEVICES;
	pm8001_dev->sas_device = NULL;
}

/**
576 577 578 579 580 581 582
  * pm8001_dev_found_notify - libsas notify a device is found.
  * @dev: the device structure which sas layer used.
  *
  * when libsas find a sas domain device, it should tell the LLDD that
  * device is found, and then LLDD register this device to HBA firmware
  * by the command "OPC_INB_REG_DEV", after that the HBA will assign a
  * device ID(according to device's sas address) and returned it to LLDD. From
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  * now on, we communicate with HBA FW with the device ID which HBA assigned
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  * rather than sas address. it is the necessary step for our HBA but it is
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  * the optional for other HBA driver.
  */
static int pm8001_dev_found_notify(struct domain_device *dev)
{
	unsigned long flags = 0;
	int res = 0;
	struct pm8001_hba_info *pm8001_ha = NULL;
	struct domain_device *parent_dev = dev->parent;
	struct pm8001_device *pm8001_device;
	DECLARE_COMPLETION_ONSTACK(completion);
	u32 flag = 0;
	pm8001_ha = pm8001_find_ha_by_dev(dev);
	spin_lock_irqsave(&pm8001_ha->lock, flags);

	pm8001_device = pm8001_alloc_dev(pm8001_ha);
	if (!pm8001_device) {
		res = -1;
		goto found_out;
	}
604
	pm8001_device->sas_device = dev;
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	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)) {
		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;
		}
	} else {
628
		if (dev->dev_type == SAS_SATA_DEV) {
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			pm8001_device->attached_phy =
				dev->rphy->identify.phy_identifier;
				flag = 1; /* directly sata*/
		}
	} /*register this device to HBA*/
634
	PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device\n"));
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	PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag);
	spin_unlock_irqrestore(&pm8001_ha->lock, flags);
	wait_for_completion(&completion);
638
	if (dev->dev_type == SAS_END_DEVICE)
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		msleep(50);
640
	pm8001_ha->flags = PM8001F_RUN_TIME;
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	return 0;
found_out:
	spin_unlock_irqrestore(&pm8001_ha->lock, flags);
	return res;
}

int pm8001_dev_found(struct domain_device *dev)
{
	return pm8001_dev_found_notify(dev);
}

652
void pm8001_task_done(struct sas_task *task)
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{
654
	if (!del_timer(&task->slow_task->timer))
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		return;
656
	complete(&task->slow_task->completion);
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}

static void pm8001_tmf_timedout(unsigned long data)
{
	struct sas_task *task = (struct sas_task *)data;

	task->task_state_flags |= SAS_TASK_STATE_ABORTED;
664
	complete(&task->slow_task->completion);
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}

#define PM8001_TASK_TIMEOUT 20
/**
669
  * pm8001_exec_internal_tmf_task - execute some task management commands.
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  * @dev: the wanted device.
  * @tmf: which task management wanted to be take.
  * @para_len: para_len.
  * @parameter: ssp task parameter.
674 675 676 677
  *
  * 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.
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  */
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);
685 686
	struct pm8001_device *pm8001_dev = dev->lldd_dev;
	DECLARE_COMPLETION_ONSTACK(completion_setstate);
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	for (retry = 0; retry < 3; retry++) {
689
		task = sas_alloc_slow_task(GFP_KERNEL);
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		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;
697 698 699 700
		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);
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702
		res = pm8001_task_exec(task, GFP_KERNEL, 1, tmf);
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		if (res) {
705
			del_timer(&task->slow_task->timer);
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			PM8001_FAIL_DBG(pm8001_ha,
				pm8001_printk("Executing internal task "
				"failed\n"));
			goto ex_err;
		}
711
		wait_for_completion(&task->slow_task->completion);
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		if (pm8001_ha->chip_id != chip_8001) {
			pm8001_dev->setds_completion = &completion_setstate;
				PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
					pm8001_dev, 0x01);
			wait_for_completion(&completion_setstate);
		}
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		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 &&
730
			task->task_status.stat == SAM_STAT_GOOD) {
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			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 {
750 751 752
			PM8001_EH_DBG(pm8001_ha,
				pm8001_printk(" Task to dev %016llx response:"
				"0x%x status 0x%x\n",
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				SAS_ADDR(dev->sas_addr),
				task->task_status.resp,
				task->task_status.stat));
756
			sas_free_task(task);
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			task = NULL;
		}
	}
ex_err:
	BUG_ON(retry == 3 && task != NULL);
762
	sas_free_task(task);
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	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;
772
	u32 ccb_tag;
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	struct pm8001_ccb_info *ccb;
	struct sas_task *task = NULL;

	for (retry = 0; retry < 3; retry++) {
777
		task = sas_alloc_slow_task(GFP_KERNEL);
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		if (!task)
			return -ENOMEM;

		task->dev = dev;
		task->task_proto = dev->tproto;
		task->task_done = pm8001_task_done;
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		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);
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		res = pm8001_tag_alloc(pm8001_ha, &ccb_tag);
		if (res)
			return res;
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		ccb = &pm8001_ha->ccb_info[ccb_tag];
		ccb->device = pm8001_dev;
		ccb->ccb_tag = ccb_tag;
		ccb->task = task;
796
		ccb->n_elem = 0;
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		res = PM8001_CHIP_DISP->task_abort(pm8001_ha,
			pm8001_dev, flag, task_tag, ccb_tag);

		if (res) {
802
			del_timer(&task->slow_task->timer);
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			PM8001_FAIL_DBG(pm8001_ha,
				pm8001_printk("Executing internal task "
				"failed\n"));
			goto ex_err;
		}
808
		wait_for_completion(&task->slow_task->completion);
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		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 &&
820
			task->task_status.stat == SAM_STAT_GOOD) {
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			res = TMF_RESP_FUNC_COMPLETE;
			break;

		} else {
825
			PM8001_EH_DBG(pm8001_ha,
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				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));
831
			sas_free_task(task);
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			task = NULL;
		}
	}
ex_err:
	BUG_ON(retry == 3 && task != NULL);
837
	sas_free_task(task);
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	return res;
}

/**
  * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
  * @dev: the device structure which sas layer used.
  */
static void pm8001_dev_gone_notify(struct domain_device *dev)
{
	unsigned long flags = 0;
	struct pm8001_hba_info *pm8001_ha;
	struct pm8001_device *pm8001_dev = dev->lldd_dev;
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	pm8001_ha = pm8001_find_ha_by_dev(dev);
	spin_lock_irqsave(&pm8001_ha->lock, flags);
	if (pm8001_dev) {
854 855
		u32 device_id = pm8001_dev->device_id;

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		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) {
			spin_unlock_irqrestore(&pm8001_ha->lock, flags);
			pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
				dev, 1, 0);
			spin_lock_irqsave(&pm8001_ha->lock, flags);
		}
		PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
		pm8001_free_dev(pm8001_dev);
	} else {
		PM8001_DISC_DBG(pm8001_ha,
			pm8001_printk("Found dev has gone.\n"));
	}
	dev->lldd_dev = NULL;
	spin_unlock_irqrestore(&pm8001_ha->lock, flags);
}

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);
}

892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914
/* retry commands by ha, by task and/or by device */
void pm8001_open_reject_retry(
	struct pm8001_hba_info *pm8001_ha,
	struct sas_task *task_to_close,
	struct pm8001_device *device_to_close)
{
	int i;
	unsigned long flags;

	if (pm8001_ha == NULL)
		return;

	spin_lock_irqsave(&pm8001_ha->lock, flags);

	for (i = 0; i < PM8001_MAX_CCB; i++) {
		struct sas_task *task;
		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];

		pm8001_dev = ccb->device;
915
		if (!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))
916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962
			continue;
		if (!device_to_close) {
			uintptr_t d = (uintptr_t)pm8001_dev
					- (uintptr_t)&pm8001_ha->devices;
			if (((d % sizeof(*pm8001_dev)) != 0)
			 || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES))
				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;
		if (task_to_close && (task != task_to_close))
			continue;
		ts = &task->task_status;
		ts->resp = SAS_TASK_COMPLETE;
		/* Force the midlayer to retry */
		ts->stat = SAS_OPEN_REJECT;
		ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
		if (pm8001_dev)
			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);
		} else {
			spin_unlock_irqrestore(&task->task_state_lock,
				flags1);
			pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
			mb();/* in order to force CPU ordering */
			spin_unlock_irqrestore(&pm8001_ha->lock, flags);
			task->task_done(task);
			spin_lock_irqsave(&pm8001_ha->lock, flags);
		}
	}

	spin_unlock_irqrestore(&pm8001_ha->lock, flags);
}

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/**
  * 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;
	struct pm8001_device *pm8001_dev;
	struct pm8001_hba_info *pm8001_ha;
	struct sas_phy *phy;
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	if (!dev || !dev->lldd_dev)
975
		return -ENODEV;
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	pm8001_dev = dev->lldd_dev;
	pm8001_ha = pm8001_find_ha_by_dev(dev);
979
	phy = sas_get_local_phy(dev);
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	if (dev_is_sata(dev)) {
982 983 984 985
		if (scsi_is_sas_phy_local(phy)) {
			rc = 0;
			goto out;
		}
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		rc = sas_phy_reset(phy, 1);
987 988 989 990 991 992 993
		if (rc) {
			PM8001_EH_DBG(pm8001_ha,
			pm8001_printk("phy reset failed for device %x\n"
			"with rc %d\n", pm8001_dev->device_id, rc));
			rc = TMF_RESP_FUNC_FAILED;
			goto out;
		}
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		msleep(2000);
		rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
			dev, 1, 0);
997 998 999 1000 1001 1002
		if (rc) {
			PM8001_EH_DBG(pm8001_ha,
			pm8001_printk("task abort failed %x\n"
			"with rc %d\n", pm8001_dev->device_id, rc));
			rc = TMF_RESP_FUNC_FAILED;
		}
1003 1004 1005
	} else {
		rc = sas_phy_reset(phy, 1);
		msleep(2000);
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	}
	PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
		pm8001_dev->device_id, rc));
1009 1010
 out:
	sas_put_local_phy(phy);
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	return rc;
}

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/*
* This function handle the IT_NEXUS_XXX event or completion
* status code for SSP/SATA/SMP I/O request.
*/
int pm8001_I_T_nexus_event_handler(struct domain_device *dev)
{
	int rc = TMF_RESP_FUNC_FAILED;
	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 !!"));

	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;
		}
		/* send internal ssp/sata/smp abort command to FW */
		rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
							dev, 1, 0);
		msleep(100);

		/* deregister the target device */
		pm8001_dev_gone_notify(dev);
		msleep(200);

		/*send phy reset to hard reset target */
		rc = sas_phy_reset(phy, 1);
		msleep(2000);
		pm8001_dev->setds_completion = &completion_setstate;

		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);
		msleep(100);

		/* deregister the target device */
		pm8001_dev_gone_notify(dev);
		msleep(200);

		/*send phy reset to hard reset target */
		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));
out:
	sas_put_local_phy(phy);

	return rc;
}
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/* mandatory SAM-3, the task reset the specified LUN*/
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);
1087
	DECLARE_COMPLETION_ONSTACK(completion_setstate);
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	if (dev_is_sata(dev)) {
1089
		struct sas_phy *phy = sas_get_local_phy(dev);
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		rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
			dev, 1, 0);
		rc = sas_phy_reset(phy, 1);
1093
		sas_put_local_phy(phy);
1094
		pm8001_dev->setds_completion = &completion_setstate;
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		rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
			pm8001_dev, 0x01);
1097
		wait_for_completion(&completion_setstate);
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	} else {
		tmf_task.tmf = TMF_LU_RESET;
		rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
	}
	/* 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));
	return rc;
}

/* optional SAM-3 */
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;

	if (task->task_proto & SAS_PROTOCOL_SSP) {
		struct scsi_cmnd *cmnd = task->uldd_task;
		struct domain_device *dev = task->dev;
		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);
		switch (rc) {
		/* The task is still in Lun, release it then */
		case TMF_RESP_FUNC_SUCC:
			PM8001_EH_DBG(pm8001_ha,
1143 1144
				pm8001_printk("The task is still in Lun\n"));
			break;
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		/* 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,"
1150
			" reset the phy\n"));
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			break;
		}
	}
	pm8001_printk(":rc= %d\n", rc);
	return rc;
}

/*  mandatory SAM-3, still need free task/ccb info, abord the specified task */
int pm8001_abort_task(struct sas_task *task)
{
	unsigned long flags;
1162
	u32 tag;
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	u32 device_id;
	struct domain_device *dev ;
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	struct pm8001_hba_info *pm8001_ha;
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	struct scsi_lun lun;
	struct pm8001_device *pm8001_dev;
	struct pm8001_tmf_task tmf_task;
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	int rc = TMF_RESP_FUNC_FAILED, ret;
	u32 phy_id;
	struct sas_task_slow slow_task;
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	if (unlikely(!task || !task->lldd_task || !task->dev))
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		return TMF_RESP_FUNC_FAILED;
	dev = task->dev;
	pm8001_dev = dev->lldd_dev;
	pm8001_ha = pm8001_find_ha_by_dev(dev);
	device_id = pm8001_dev->device_id;
1178
	phy_id = pm8001_dev->attached_phy;
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	rc = pm8001_find_tag(task, &tag);
	if (rc == 0) {
		pm8001_printk("no tag for task:%p\n", task);
		return TMF_RESP_FUNC_FAILED;
	}
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	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);
1187
		return TMF_RESP_FUNC_COMPLETE;
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	}
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	task->task_state_flags |= SAS_TASK_STATE_ABORTED;
	if (task->slow_task == NULL) {
		init_completion(&slow_task.completion);
		task->slow_task = &slow_task;
	}
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	spin_unlock_irqrestore(&task->task_state_lock, flags);
	if (task->task_proto & SAS_PROTOCOL_SSP) {
		struct scsi_cmnd *cmnd = task->uldd_task;
		int_to_scsilun(cmnd->device->lun, &lun);
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		tmf_task.tmf = TMF_ABORT_TASK;
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		tmf_task.tag_of_task_to_be_managed = tag;
		rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1201
		pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
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			pm8001_dev->sas_device, 0, tag);
	} else if (task->task_proto & SAS_PROTOCOL_SATA ||
		task->task_proto & SAS_PROTOCOL_STP) {
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		if (pm8001_ha->chip_id == chip_8006) {
			DECLARE_COMPLETION_ONSTACK(completion_reset);
			DECLARE_COMPLETION_ONSTACK(completion);
			struct pm8001_phy *phy = pm8001_ha->phy + phy_id;

			/* 1. Set Device state as Recovery */
			pm8001_dev->setds_completion = &completion;
			PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
				pm8001_dev, 0x03);
			wait_for_completion(&completion);

			/* 2. Send Phy Control Hard Reset */
			reinit_completion(&completion);
			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)
				goto out;
			PM8001_MSG_DBG(pm8001_ha,
				pm8001_printk("Waiting for local phy ctl\n"));
			wait_for_completion(&completion);
			if (!phy->reset_success)
				goto out;

			/* 3. Wait for Port Reset complete / Port reset TMO */
			PM8001_MSG_DBG(pm8001_ha,
				pm8001_printk("Waiting for Port reset\n"));
			wait_for_completion(&completion_reset);
			if (phy->port_reset_status)
				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 = pm8001_exec_internal_task_abort(pm8001_ha,
				pm8001_dev, pm8001_dev->sas_device, 1, tag);
			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, 0x01);
			wait_for_completion(&completion);
		} else {
			rc = pm8001_exec_internal_task_abort(pm8001_ha,
				pm8001_dev, pm8001_dev->sas_device, 0, tag);
		}
		rc = TMF_RESP_FUNC_COMPLETE;
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	} else if (task->task_proto & SAS_PROTOCOL_SMP) {
		/* SMP */
		rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
			pm8001_dev->sas_device, 0, tag);

	}
1271 1272 1273 1274 1275
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);
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	if (rc != TMF_RESP_FUNC_COMPLETE)
		pm8001_printk("rc= %d\n", rc);
	return rc;
}

int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
{
	int rc = TMF_RESP_FUNC_FAILED;
	struct pm8001_tmf_task tmf_task;

	tmf_task.tmf = TMF_ABORT_TASK_SET;
	rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
	return rc;
}

int pm8001_clear_aca(struct domain_device *dev, u8 *lun)
{
	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;
}

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);

	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;
}