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scsi: ufs: Introduce ufshcd_init_lrb()
This patch does not change any functionality but makes the next patch in this series easier to read. Link: https://lore.kernel.org/r/20200123035637.21848-3-bvanassche@acm.org Cc: Tomas Winkler <tomas.winkler@intel.com> Cc: Stanley Chu <stanley.chu@mediatek.com> Cc: Bean Huo <beanhuo@micron.com> Cc: Can Guo <cang@codeaurora.org> Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by: Avri Altman <avri.altman@wdc.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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1 changed files with 22 additions and 16 deletions
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@ -2359,6 +2359,27 @@ static inline u16 ufshcd_upiu_wlun_to_scsi_wlun(u8 upiu_wlun_id)
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return (upiu_wlun_id & ~UFS_UPIU_WLUN_ID) | SCSI_W_LUN_BASE;
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}
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static void ufshcd_init_lrb(struct ufs_hba *hba, struct ufshcd_lrb *lrb, int i)
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{
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struct utp_transfer_cmd_desc *cmd_descp = hba->ucdl_base_addr;
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struct utp_transfer_req_desc *utrdlp = hba->utrdl_base_addr;
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dma_addr_t cmd_desc_element_addr = hba->ucdl_dma_addr +
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i * sizeof(struct utp_transfer_cmd_desc);
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u16 response_offset = offsetof(struct utp_transfer_cmd_desc,
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response_upiu);
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u16 prdt_offset = offsetof(struct utp_transfer_cmd_desc, prd_table);
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lrb->utr_descriptor_ptr = utrdlp + i;
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lrb->utrd_dma_addr = hba->utrdl_dma_addr +
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i * sizeof(struct utp_transfer_req_desc);
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lrb->ucd_req_ptr = (struct utp_upiu_req *)(cmd_descp + i);
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lrb->ucd_req_dma_addr = cmd_desc_element_addr;
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lrb->ucd_rsp_ptr = (struct utp_upiu_rsp *)cmd_descp[i].response_upiu;
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lrb->ucd_rsp_dma_addr = cmd_desc_element_addr + response_offset;
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lrb->ucd_prdt_ptr = (struct ufshcd_sg_entry *)cmd_descp[i].prd_table;
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lrb->ucd_prdt_dma_addr = cmd_desc_element_addr + prdt_offset;
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}
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/**
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* ufshcd_queuecommand - main entry point for SCSI requests
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* @host: SCSI host pointer
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@ -3394,7 +3415,6 @@ static int ufshcd_memory_alloc(struct ufs_hba *hba)
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*/
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static void ufshcd_host_memory_configure(struct ufs_hba *hba)
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{
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struct utp_transfer_cmd_desc *cmd_descp;
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struct utp_transfer_req_desc *utrdlp;
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dma_addr_t cmd_desc_dma_addr;
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dma_addr_t cmd_desc_element_addr;
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@ -3404,7 +3424,6 @@ static void ufshcd_host_memory_configure(struct ufs_hba *hba)
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int i;
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utrdlp = hba->utrdl_base_addr;
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cmd_descp = hba->ucdl_base_addr;
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response_offset =
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offsetof(struct utp_transfer_cmd_desc, response_upiu);
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@ -3430,20 +3449,7 @@ static void ufshcd_host_memory_configure(struct ufs_hba *hba)
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utrdlp[i].response_upiu_length =
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cpu_to_le16(ALIGNED_UPIU_SIZE >> 2);
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hba->lrb[i].utr_descriptor_ptr = (utrdlp + i);
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hba->lrb[i].utrd_dma_addr = hba->utrdl_dma_addr +
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(i * sizeof(struct utp_transfer_req_desc));
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hba->lrb[i].ucd_req_ptr =
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(struct utp_upiu_req *)(cmd_descp + i);
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hba->lrb[i].ucd_req_dma_addr = cmd_desc_element_addr;
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hba->lrb[i].ucd_rsp_ptr =
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(struct utp_upiu_rsp *)cmd_descp[i].response_upiu;
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hba->lrb[i].ucd_rsp_dma_addr = cmd_desc_element_addr +
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response_offset;
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hba->lrb[i].ucd_prdt_ptr =
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(struct ufshcd_sg_entry *)cmd_descp[i].prd_table;
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hba->lrb[i].ucd_prdt_dma_addr = cmd_desc_element_addr +
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prdt_offset;
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ufshcd_init_lrb(hba, &hba->lrb[i], i);
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}
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}
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