1394 lines
40 KiB
C
1394 lines
40 KiB
C
/*
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* PMC-Sierra PM8001/8081/8088/8089 SAS/SATA based host adapters driver
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*
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* Copyright (c) 2008-2009 USI Co., Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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*/
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#include <linux/slab.h>
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#include "pm8001_sas.h"
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#include "pm80xx_tracepoints.h"
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/**
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* pm8001_find_tag - from sas task to find out tag that belongs to this task
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* @task: the task sent to the LLDD
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* @tag: the found tag associated with the task
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*/
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static int pm8001_find_tag(struct sas_task *task, u32 *tag)
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{
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if (task->lldd_task) {
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struct pm8001_ccb_info *ccb;
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ccb = task->lldd_task;
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*tag = ccb->ccb_tag;
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return 1;
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}
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return 0;
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}
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/**
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* pm8001_tag_free - free the no more needed tag
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* @pm8001_ha: our hba struct
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* @tag: the found tag associated with the task
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*/
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void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
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{
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void *bitmap = pm8001_ha->tags;
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clear_bit(tag, bitmap);
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}
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/**
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* pm8001_tag_alloc - allocate a empty tag for task used.
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* @pm8001_ha: our hba struct
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* @tag_out: the found empty tag .
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*/
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inline int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out)
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{
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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) {
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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;
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return 0;
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}
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void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha)
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{
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int i;
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for (i = 0; i < pm8001_ha->tags_num; ++i)
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pm8001_tag_free(pm8001_ha, i);
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}
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/**
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* pm8001_mem_alloc - allocate memory for pm8001.
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* @pdev: pci device.
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* @virt_addr: the allocated virtual address
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* @pphys_addr: DMA address for this device
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* @pphys_addr_hi: the physical address high byte address.
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* @pphys_addr_lo: the physical address low byte address.
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* @mem_size: memory size.
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* @align: requested byte alignment
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*/
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int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr,
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dma_addr_t *pphys_addr, u32 *pphys_addr_hi,
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u32 *pphys_addr_lo, u32 mem_size, u32 align)
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{
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caddr_t mem_virt_alloc;
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dma_addr_t mem_dma_handle;
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u64 phys_align;
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u64 align_offset = 0;
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if (align)
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align_offset = (dma_addr_t)align - 1;
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mem_virt_alloc = dma_alloc_coherent(&pdev->dev, mem_size + align,
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&mem_dma_handle, GFP_KERNEL);
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if (!mem_virt_alloc)
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return -ENOMEM;
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*pphys_addr = mem_dma_handle;
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phys_align = (*pphys_addr + align_offset) & ~align_offset;
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*virt_addr = (void *)mem_virt_alloc + phys_align - *pphys_addr;
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*pphys_addr_hi = upper_32_bits(phys_align);
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*pphys_addr_lo = lower_32_bits(phys_align);
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return 0;
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}
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/**
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* pm8001_find_ha_by_dev - from domain device which come from sas layer to
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* find out our hba struct.
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* @dev: the domain device which from sas layer.
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*/
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static
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struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev)
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{
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struct sas_ha_struct *sha = dev->port->ha;
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struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
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return pm8001_ha;
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}
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/**
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* pm8001_phy_control - this function should be registered to
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* sas_domain_function_template to provide libsas used, note: this is just
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* control the HBA phy rather than other expander phy if you want control
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* other phy, you should use SMP command.
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* @sas_phy: which phy in HBA phys.
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* @func: the operation.
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* @funcdata: always NULL.
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*/
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int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
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void *funcdata)
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{
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int rc = 0, phy_id = sas_phy->id;
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struct pm8001_hba_info *pm8001_ha = NULL;
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struct sas_phy_linkrates *rates;
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struct pm8001_phy *phy;
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DECLARE_COMPLETION_ONSTACK(completion);
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unsigned long flags;
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pm8001_ha = sas_phy->ha->lldd_ha;
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phy = &pm8001_ha->phy[phy_id];
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pm8001_ha->phy[phy_id].enable_completion = &completion;
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switch (func) {
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case PHY_FUNC_SET_LINK_RATE:
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rates = funcdata;
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if (rates->minimum_linkrate) {
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pm8001_ha->phy[phy_id].minimum_linkrate =
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rates->minimum_linkrate;
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}
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if (rates->maximum_linkrate) {
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pm8001_ha->phy[phy_id].maximum_linkrate =
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rates->maximum_linkrate;
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}
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if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) {
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PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
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wait_for_completion(&completion);
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}
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PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
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PHY_LINK_RESET);
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break;
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case PHY_FUNC_HARD_RESET:
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if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) {
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PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
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wait_for_completion(&completion);
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}
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PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
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PHY_HARD_RESET);
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break;
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case PHY_FUNC_LINK_RESET:
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if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) {
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PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
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wait_for_completion(&completion);
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}
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PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
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PHY_LINK_RESET);
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break;
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case PHY_FUNC_RELEASE_SPINUP_HOLD:
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PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
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PHY_LINK_RESET);
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break;
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case PHY_FUNC_DISABLE:
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if (pm8001_ha->chip_id != chip_8001) {
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if (pm8001_ha->phy[phy_id].phy_state ==
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PHY_STATE_LINK_UP_SPCV) {
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sas_phy_disconnected(&phy->sas_phy);
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sas_notify_phy_event(&phy->sas_phy,
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PHYE_LOSS_OF_SIGNAL, GFP_KERNEL);
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phy->phy_attached = 0;
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}
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} else {
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if (pm8001_ha->phy[phy_id].phy_state ==
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PHY_STATE_LINK_UP_SPC) {
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sas_phy_disconnected(&phy->sas_phy);
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sas_notify_phy_event(&phy->sas_phy,
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PHYE_LOSS_OF_SIGNAL, GFP_KERNEL);
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phy->phy_attached = 0;
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}
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}
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PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
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break;
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case PHY_FUNC_GET_EVENTS:
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spin_lock_irqsave(&pm8001_ha->lock, flags);
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if (pm8001_ha->chip_id == chip_8001) {
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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);
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return -EINVAL;
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}
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}
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{
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struct sas_phy *phy = sas_phy->phy;
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uint32_t *qp = (uint32_t *)(((char *)
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pm8001_ha->io_mem[2].memvirtaddr)
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+ 0x1034 + (0x4000 * (phy_id & 3)));
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phy->invalid_dword_count = qp[0];
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phy->running_disparity_error_count = qp[1];
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phy->loss_of_dword_sync_count = qp[3];
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phy->phy_reset_problem_count = qp[4];
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}
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if (pm8001_ha->chip_id == chip_8001)
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pm8001_bar4_shift(pm8001_ha, 0);
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spin_unlock_irqrestore(&pm8001_ha->lock, flags);
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return 0;
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default:
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pm8001_dbg(pm8001_ha, DEVIO, "func 0x%x\n", func);
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rc = -EOPNOTSUPP;
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}
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msleep(300);
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return rc;
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}
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/**
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* pm8001_scan_start - we should enable all HBA phys by sending the phy_start
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* command to HBA.
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* @shost: the scsi host data.
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*/
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void pm8001_scan_start(struct Scsi_Host *shost)
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{
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int i;
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struct pm8001_hba_info *pm8001_ha;
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struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
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DECLARE_COMPLETION_ONSTACK(completion);
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pm8001_ha = sha->lldd_ha;
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/* SAS_RE_INITIALIZATION not available in SPCv/ve */
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if (pm8001_ha->chip_id == chip_8001)
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PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha);
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for (i = 0; i < pm8001_ha->chip->n_phy; ++i) {
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pm8001_ha->phy[i].enable_completion = &completion;
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PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i);
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wait_for_completion(&completion);
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msleep(300);
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}
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}
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int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
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{
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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
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* is empirically about all it takes) */
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if (time < HZ)
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return 0;
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/* Wait for discovery to finish */
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sas_drain_work(ha);
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return 1;
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}
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/**
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* pm8001_task_prep_smp - the dispatcher function, prepare data for smp task
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* @pm8001_ha: our hba card information
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* @ccb: the ccb which attached to smp task
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*/
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static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
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struct pm8001_ccb_info *ccb)
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{
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return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
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}
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u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag)
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{
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struct ata_queued_cmd *qc = task->uldd_task;
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if (qc) {
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if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
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qc->tf.command == ATA_CMD_FPDMA_READ ||
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qc->tf.command == ATA_CMD_FPDMA_RECV ||
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qc->tf.command == ATA_CMD_FPDMA_SEND ||
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qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
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*tag = qc->tag;
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return 1;
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}
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}
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return 0;
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}
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/**
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* pm8001_task_prep_ata - the dispatcher function, prepare data for sata task
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* @pm8001_ha: our hba card information
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* @ccb: the ccb which attached to sata task
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*/
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static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
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struct pm8001_ccb_info *ccb)
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{
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return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
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}
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/**
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* pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data
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* @pm8001_ha: our hba card information
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* @ccb: the ccb which attached to TM
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* @tmf: the task management IU
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*/
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static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
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struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf)
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{
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return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf);
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}
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/**
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* pm8001_task_prep_ssp - the dispatcher function, prepare ssp data for ssp task
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* @pm8001_ha: our hba card information
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* @ccb: the ccb which attached to ssp task
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*/
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static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
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struct pm8001_ccb_info *ccb)
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{
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return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
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}
|
|
|
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/* Find the local port id that's attached to this device */
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static int sas_find_local_port_id(struct domain_device *dev)
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{
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struct domain_device *pdev = dev->parent;
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|
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/* Directly attached device */
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if (!pdev)
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return dev->port->id;
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while (pdev) {
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struct domain_device *pdev_p = pdev->parent;
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if (!pdev_p)
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return pdev->port->id;
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pdev = pdev->parent;
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}
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return 0;
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}
|
|
|
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#define DEV_IS_GONE(pm8001_dev) \
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((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)))
|
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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.
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* @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
|
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*/
|
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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)
|
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{
|
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struct domain_device *dev = task->dev;
|
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struct pm8001_hba_info *pm8001_ha;
|
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struct pm8001_device *pm8001_dev;
|
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struct pm8001_port *port = NULL;
|
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struct sas_task *t = task;
|
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struct pm8001_ccb_info *ccb;
|
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u32 tag = 0xdeadbeef, rc = 0, n_elem = 0;
|
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unsigned long flags = 0;
|
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enum sas_protocol task_proto = t->task_proto;
|
|
|
|
if (!dev->port) {
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struct task_status_struct *tsm = &t->task_status;
|
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tsm->resp = SAS_TASK_UNDELIVERED;
|
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tsm->stat = SAS_PHY_DOWN;
|
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if (dev->dev_type != SAS_SATA_DEV)
|
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t->task_done(t);
|
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return 0;
|
|
}
|
|
pm8001_ha = pm8001_find_ha_by_dev(task->dev);
|
|
if (pm8001_ha->controller_fatal_error) {
|
|
struct task_status_struct *ts = &t->task_status;
|
|
|
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ts->resp = SAS_TASK_UNDELIVERED;
|
|
t->task_done(t);
|
|
return 0;
|
|
}
|
|
pm8001_dbg(pm8001_ha, IO, "pm8001_task_exec device\n");
|
|
spin_lock_irqsave(&pm8001_ha->lock, flags);
|
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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(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;
|
|
}
|
|
}
|
|
rc = pm8001_tag_alloc(pm8001_ha, &tag);
|
|
if (rc)
|
|
goto err_out;
|
|
ccb = &pm8001_ha->ccb_info[tag];
|
|
|
|
if (!sas_protocol_ata(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;
|
|
}
|
|
}
|
|
} else {
|
|
n_elem = t->num_scatter;
|
|
}
|
|
|
|
t->lldd_task = ccb;
|
|
ccb->n_elem = n_elem;
|
|
ccb->ccb_tag = tag;
|
|
ccb->task = t;
|
|
ccb->device = pm8001_dev;
|
|
switch (task_proto) {
|
|
case SAS_PROTOCOL_SMP:
|
|
atomic_inc(&pm8001_dev->running_req);
|
|
rc = pm8001_task_prep_smp(pm8001_ha, ccb);
|
|
break;
|
|
case SAS_PROTOCOL_SSP:
|
|
atomic_inc(&pm8001_dev->running_req);
|
|
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:
|
|
atomic_inc(&pm8001_dev->running_req);
|
|
rc = pm8001_task_prep_ata(pm8001_ha, ccb);
|
|
break;
|
|
default:
|
|
dev_printk(KERN_ERR, pm8001_ha->dev,
|
|
"unknown sas_task proto: 0x%x\n", task_proto);
|
|
rc = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
if (rc) {
|
|
pm8001_dbg(pm8001_ha, IO, "rc is %x\n", rc);
|
|
atomic_dec(&pm8001_dev->running_req);
|
|
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);
|
|
} while (0);
|
|
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(task_proto))
|
|
if (n_elem)
|
|
dma_unmap_sg(pm8001_ha->dev, t->scatter, t->num_scatter,
|
|
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
|
|
*/
|
|
int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)
|
|
{
|
|
return pm8001_task_exec(task, gfp_flags, 0, NULL);
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
struct ata_queued_cmd *qc;
|
|
struct pm8001_device *pm8001_dev;
|
|
|
|
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,
|
|
DMA_FROM_DEVICE);
|
|
dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
|
|
DMA_TO_DEVICE);
|
|
break;
|
|
|
|
case SAS_PROTOCOL_SATA:
|
|
case SAS_PROTOCOL_STP:
|
|
case SAS_PROTOCOL_SSP:
|
|
default:
|
|
/* 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_idx, 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_tag_free(pm8001_ha, ccb_idx);
|
|
}
|
|
|
|
/**
|
|
* 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];
|
|
}
|
|
}
|
|
if (dev == 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)
|
|
{
|
|
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_dbg(pm8001_ha, FAIL, "NO MATCHING DEVICE FOUND !!!\n");
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
* now on, we communicate with HBA FW with the device ID which HBA assigned
|
|
* rather than sas address. it is the necessary step for our HBA but it is
|
|
* 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;
|
|
}
|
|
pm8001_device->sas_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)) {
|
|
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_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 = -1;
|
|
}
|
|
} else {
|
|
if (dev->dev_type == SAS_SATA_DEV) {
|
|
pm8001_device->attached_phy =
|
|
dev->rphy->identify.phy_identifier;
|
|
flag = 1; /* directly sata */
|
|
}
|
|
} /*register this device to HBA*/
|
|
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);
|
|
if (dev->dev_type == SAS_END_DEVICE)
|
|
msleep(50);
|
|
pm8001_ha->flags = PM8001F_RUN_TIME;
|
|
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);
|
|
}
|
|
|
|
void pm8001_task_done(struct sas_task *task)
|
|
{
|
|
del_timer(&task->slow_task->timer);
|
|
complete(&task->slow_task->completion);
|
|
}
|
|
|
|
static void pm8001_tmf_timedout(struct timer_list *t)
|
|
{
|
|
struct sas_task_slow *slow = from_timer(slow, t, timer);
|
|
struct sas_task *task = slow->task;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&task->task_state_lock, flags);
|
|
if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
|
|
task->task_state_flags |= SAS_TASK_STATE_ABORTED;
|
|
complete(&task->slow_task->completion);
|
|
}
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
}
|
|
|
|
#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 exception, 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);
|
|
struct pm8001_device *pm8001_dev = dev->lldd_dev;
|
|
DECLARE_COMPLETION_ONSTACK(completion_setstate);
|
|
|
|
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.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, GFP_KERNEL, 1, tmf);
|
|
|
|
if (res) {
|
|
del_timer(&task->slow_task->timer);
|
|
pm8001_dbg(pm8001_ha, FAIL, "Executing internal task failed\n");
|
|
goto ex_err;
|
|
}
|
|
wait_for_completion(&task->slow_task->completion);
|
|
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);
|
|
}
|
|
res = -TMF_RESP_FUNC_FAILED;
|
|
/* Even TMF timed out, return direct. */
|
|
if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
|
|
pm8001_dbg(pm8001_ha, FAIL, "TMF task[%x]timeout.\n",
|
|
tmf->tmf);
|
|
goto ex_err;
|
|
}
|
|
|
|
if (task->task_status.resp == SAS_TASK_COMPLETE &&
|
|
task->task_status.stat == SAS_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_dbg(pm8001_ha, FAIL, "Blocked task error.\n");
|
|
res = -EMSGSIZE;
|
|
break;
|
|
} else {
|
|
pm8001_dbg(pm8001_ha, EH,
|
|
" 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.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)
|
|
goto ex_err;
|
|
ccb = &pm8001_ha->ccb_info[ccb_tag];
|
|
ccb->device = pm8001_dev;
|
|
ccb->ccb_tag = ccb_tag;
|
|
ccb->task = task;
|
|
ccb->n_elem = 0;
|
|
|
|
res = PM8001_CHIP_DISP->task_abort(pm8001_ha,
|
|
pm8001_dev, flag, task_tag, ccb_tag);
|
|
|
|
if (res) {
|
|
del_timer(&task->slow_task->timer);
|
|
pm8001_dbg(pm8001_ha, FAIL, "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) {
|
|
pm8001_dbg(pm8001_ha, FAIL, "TMF task timeout.\n");
|
|
goto ex_err;
|
|
}
|
|
|
|
if (task->task_status.resp == SAS_TASK_COMPLETE &&
|
|
task->task_status.stat == SAS_SAM_STAT_GOOD) {
|
|
res = TMF_RESP_FUNC_COMPLETE;
|
|
break;
|
|
|
|
} else {
|
|
pm8001_dbg(pm8001_ha, EH,
|
|
" 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"
|
|
* @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;
|
|
|
|
pm8001_ha = pm8001_find_ha_by_dev(dev);
|
|
spin_lock_irqsave(&pm8001_ha->lock, flags);
|
|
if (pm8001_dev) {
|
|
u32 device_id = pm8001_dev->device_id;
|
|
|
|
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);
|
|
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);
|
|
pm8001_free_dev(pm8001_dev);
|
|
} else {
|
|
pm8001_dbg(pm8001_ha, DISC, "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;
|
|
|
|
memcpy((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,
|
|
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;
|
|
if (!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))
|
|
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)
|
|
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);
|
|
} 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);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
struct pm8001_device *pm8001_dev;
|
|
struct pm8001_hba_info *pm8001_ha;
|
|
struct sas_phy *phy;
|
|
|
|
if (!dev || !dev->lldd_dev)
|
|
return -ENODEV;
|
|
|
|
pm8001_dev = dev->lldd_dev;
|
|
pm8001_ha = pm8001_find_ha_by_dev(dev);
|
|
phy = sas_get_local_phy(dev);
|
|
|
|
if (dev_is_sata(dev)) {
|
|
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);
|
|
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_dbg(pm8001_ha, EH, " for device[%x]:rc=%d\n",
|
|
pm8001_dev->device_id, rc);
|
|
out:
|
|
sas_put_local_phy(phy);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
if (!dev || !dev->lldd_dev)
|
|
return -1;
|
|
|
|
pm8001_dev = dev->lldd_dev;
|
|
pm8001_ha = pm8001_find_ha_by_dev(dev);
|
|
|
|
pm8001_dbg(pm8001_ha, EH, "I_T_Nexus handler invoked !!\n");
|
|
|
|
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_dbg(pm8001_ha, EH, " for device[%x]:rc=%d\n",
|
|
pm8001_dev->device_id, rc);
|
|
out:
|
|
sas_put_local_phy(phy);
|
|
|
|
return rc;
|
|
}
|
|
/* 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);
|
|
DECLARE_COMPLETION_ONSTACK(completion_setstate);
|
|
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);
|
|
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, DS_OPERATIONAL);
|
|
wait_for_completion(&completion_setstate);
|
|
} 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_dbg(pm8001_ha, EH, "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;
|
|
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_dbg(pm8001_ha, EH, "Query:[%16ph]\n", cmnd->cmnd);
|
|
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_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_dbg(pm8001_ha, EH,
|
|
"The task is not in Lun or failed, reset the phy\n");
|
|
break;
|
|
}
|
|
}
|
|
pr_err("pm80xx: rc= %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
/* mandatory SAM-3, still need free task/ccb info, abort the specified task */
|
|
int pm8001_abort_task(struct sas_task *task)
|
|
{
|
|
unsigned long flags;
|
|
u32 tag;
|
|
struct domain_device *dev ;
|
|
struct pm8001_hba_info *pm8001_ha;
|
|
struct scsi_lun lun;
|
|
struct pm8001_device *pm8001_dev;
|
|
struct pm8001_tmf_task tmf_task;
|
|
int rc = TMF_RESP_FUNC_FAILED, ret;
|
|
u32 phy_id, port_id;
|
|
struct sas_task_slow slow_task;
|
|
|
|
if (unlikely(!task || !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);
|
|
phy_id = pm8001_dev->attached_phy;
|
|
|
|
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);
|
|
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;
|
|
int_to_scsilun(cmnd->device->lun, &lun);
|
|
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);
|
|
} else if (task->task_proto & SAS_PROTOCOL_SATA ||
|
|
task->task_proto & SAS_PROTOCOL_STP) {
|
|
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;
|
|
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 = 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, DS_OPERATIONAL);
|
|
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;
|
|
} 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);
|
|
|
|
}
|
|
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_info(pm8001_ha, "rc= %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
|
|
{
|
|
struct pm8001_tmf_task tmf_task;
|
|
|
|
tmf_task.tmf = TMF_ABORT_TASK_SET;
|
|
return pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
|
|
}
|
|
|
|
int pm8001_clear_aca(struct domain_device *dev, u8 *lun)
|
|
{
|
|
struct pm8001_tmf_task tmf_task;
|
|
|
|
tmf_task.tmf = TMF_CLEAR_ACA;
|
|
return pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
|
|
}
|
|
|
|
int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
|
|
{
|
|
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_dbg(pm8001_ha, EH, "I_T_L_Q clear task set[%x]\n",
|
|
pm8001_dev->device_id);
|
|
tmf_task.tmf = TMF_CLEAR_TASK_SET;
|
|
return pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
|
|
}
|
|
|
|
void pm8001_port_formed(struct asd_sas_phy *sas_phy)
|
|
{
|
|
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;
|
|
}
|