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1357 lines
39 KiB
1357 lines
39 KiB
/* |
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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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|
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#include <linux/slab.h> |
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#include "pm8001_sas.h" |
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|
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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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/** |
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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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/** |
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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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|
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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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|
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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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/** |
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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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/** |
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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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/** |
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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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|
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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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/** |
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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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|
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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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|
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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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/** |
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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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|
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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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* pm8001_task_prep_ssp - the dispatcher function, prepare ssp data for ssp task |
|
* @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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/* 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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struct domain_device *pdev = dev->parent; |
|
|
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/* Directly attached device */ |
|
if (!pdev) |
|
return dev->port->id; |
|
while (pdev) { |
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struct domain_device *pdev_p = pdev->parent; |
|
if (!pdev_p) |
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return pdev->port->id; |
|
pdev = pdev->parent; |
|
} |
|
return 0; |
|
} |
|
|
|
#define DEV_IS_GONE(pm8001_dev) \ |
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((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))) |
|
/** |
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* pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware. |
|
* @task: the task to be execute. |
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* @gfp_flags: gfp_flags. |
|
* @is_tmf: if it is task management task. |
|
* @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) |
|
{ |
|
struct domain_device *dev = task->dev; |
|
struct pm8001_hba_info *pm8001_ha; |
|
struct pm8001_device *pm8001_dev; |
|
struct pm8001_port *port = NULL; |
|
struct sas_task *t = task; |
|
struct pm8001_ccb_info *ccb; |
|
u32 tag = 0xdeadbeef, rc = 0, n_elem = 0; |
|
unsigned long flags = 0; |
|
enum sas_protocol task_proto = t->task_proto; |
|
|
|
if (!dev->port) { |
|
struct task_status_struct *tsm = &t->task_status; |
|
tsm->resp = SAS_TASK_UNDELIVERED; |
|
tsm->stat = SAS_PHY_DOWN; |
|
if (dev->dev_type != SAS_SATA_DEV) |
|
t->task_done(t); |
|
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; |
|
|
|
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); |
|
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) |
|
{ |
|
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; |
|
} |
|
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; |
|
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; |
|
|
|
/* 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); |
|
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); |
|
}
|
|
|