[SCSI] ipr: convert to use the data buffer accessors
- remove the unnecessary map_single path. - convert to use the new accessors for the sg lists and the parameters. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>hifive-unleashed-5.1
FUJITA Tomonori
James Bottomley
parent
c13e556647
commit
63015bc933
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@ -539,32 +539,6 @@ struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
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return ipr_cmd;
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}
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/**
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* ipr_unmap_sglist - Unmap scatterlist if mapped
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* @ioa_cfg: ioa config struct
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* @ipr_cmd: ipr command struct
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*
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* Return value:
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* nothing
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**/
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static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
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struct ipr_cmnd *ipr_cmd)
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{
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struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
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if (ipr_cmd->dma_use_sg) {
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if (scsi_cmd->use_sg > 0) {
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pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
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scsi_cmd->use_sg,
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scsi_cmd->sc_data_direction);
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} else {
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pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
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scsi_cmd->request_bufflen,
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scsi_cmd->sc_data_direction);
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}
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}
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}
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/**
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* ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
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* @ioa_cfg: ioa config struct
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@ -677,7 +651,7 @@ static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
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scsi_cmd->result |= (DID_ERROR << 16);
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ipr_unmap_sglist(ioa_cfg, ipr_cmd);
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scsi_dma_unmap(ipr_cmd->scsi_cmd);
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scsi_cmd->scsi_done(scsi_cmd);
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list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
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}
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@ -4285,93 +4259,55 @@ static irqreturn_t ipr_isr(int irq, void *devp)
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static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
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struct ipr_cmnd *ipr_cmd)
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{
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int i;
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struct scatterlist *sglist;
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int i, nseg;
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struct scatterlist *sg;
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u32 length;
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u32 ioadl_flags = 0;
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struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
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struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
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struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
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length = scsi_cmd->request_bufflen;
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if (length == 0)
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length = scsi_bufflen(scsi_cmd);
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if (!length)
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return 0;
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if (scsi_cmd->use_sg) {
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ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
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scsi_cmd->request_buffer,
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scsi_cmd->use_sg,
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scsi_cmd->sc_data_direction);
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if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
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ioadl_flags = IPR_IOADL_FLAGS_WRITE;
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ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
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ioarcb->write_data_transfer_length = cpu_to_be32(length);
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ioarcb->write_ioadl_len =
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cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
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} else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
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ioadl_flags = IPR_IOADL_FLAGS_READ;
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ioarcb->read_data_transfer_length = cpu_to_be32(length);
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ioarcb->read_ioadl_len =
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cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
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}
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sglist = scsi_cmd->request_buffer;
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if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
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ioadl = ioarcb->add_data.u.ioadl;
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ioarcb->write_ioadl_addr =
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cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
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offsetof(struct ipr_ioarcb, add_data));
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ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
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}
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for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
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ioadl[i].flags_and_data_len =
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cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
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ioadl[i].address =
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cpu_to_be32(sg_dma_address(&sglist[i]));
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}
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if (likely(ipr_cmd->dma_use_sg)) {
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ioadl[i-1].flags_and_data_len |=
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cpu_to_be32(IPR_IOADL_FLAGS_LAST);
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return 0;
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} else
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dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
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} else {
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if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
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ioadl_flags = IPR_IOADL_FLAGS_WRITE;
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ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
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ioarcb->write_data_transfer_length = cpu_to_be32(length);
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ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
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} else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
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ioadl_flags = IPR_IOADL_FLAGS_READ;
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ioarcb->read_data_transfer_length = cpu_to_be32(length);
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ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
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}
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ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
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scsi_cmd->request_buffer, length,
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scsi_cmd->sc_data_direction);
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if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
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ioadl = ioarcb->add_data.u.ioadl;
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ioarcb->write_ioadl_addr =
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cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
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offsetof(struct ipr_ioarcb, add_data));
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ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
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ipr_cmd->dma_use_sg = 1;
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ioadl[0].flags_and_data_len =
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cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
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ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
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return 0;
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} else
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dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
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nseg = scsi_dma_map(scsi_cmd);
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if (nseg < 0) {
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dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
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return -1;
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}
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return -1;
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ipr_cmd->dma_use_sg = nseg;
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if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
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ioadl_flags = IPR_IOADL_FLAGS_WRITE;
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ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
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ioarcb->write_data_transfer_length = cpu_to_be32(length);
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ioarcb->write_ioadl_len =
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cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
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} else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
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ioadl_flags = IPR_IOADL_FLAGS_READ;
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ioarcb->read_data_transfer_length = cpu_to_be32(length);
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ioarcb->read_ioadl_len =
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cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
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}
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if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
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ioadl = ioarcb->add_data.u.ioadl;
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ioarcb->write_ioadl_addr =
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cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
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offsetof(struct ipr_ioarcb, add_data));
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ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
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}
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scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
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ioadl[i].flags_and_data_len =
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cpu_to_be32(ioadl_flags | sg_dma_len(sg));
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ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
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}
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ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
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return 0;
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}
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/**
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@ -4434,7 +4370,7 @@ static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
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res->needs_sync_complete = 1;
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res->in_erp = 0;
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}
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ipr_unmap_sglist(ioa_cfg, ipr_cmd);
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scsi_dma_unmap(ipr_cmd->scsi_cmd);
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list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
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scsi_cmd->scsi_done(scsi_cmd);
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}
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@ -4812,7 +4748,7 @@ static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
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break;
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}
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ipr_unmap_sglist(ioa_cfg, ipr_cmd);
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scsi_dma_unmap(ipr_cmd->scsi_cmd);
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list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
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scsi_cmd->scsi_done(scsi_cmd);
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}
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@ -4833,10 +4769,10 @@ static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
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struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
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u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
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scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
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scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
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if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
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ipr_unmap_sglist(ioa_cfg, ipr_cmd);
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scsi_dma_unmap(ipr_cmd->scsi_cmd);
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list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
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scsi_cmd->scsi_done(scsi_cmd);
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} else
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