diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.c | 112 |
1 files changed, 17 insertions, 95 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c index e2cf12ef368..b7f2e613c90 100644 --- a/drivers/scsi/megaraid/megaraid_sas.c +++ b/drivers/scsi/megaraid/megaraid_sas.c @@ -433,34 +433,15 @@ megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, int sge_count; struct scatterlist *os_sgl; - /* - * Return 0 if there is no data transfer - */ - if (!scp->request_buffer || !scp->request_bufflen) - return 0; + sge_count = scsi_dma_map(scp); + BUG_ON(sge_count < 0); - if (!scp->use_sg) { - mfi_sgl->sge32[0].phys_addr = pci_map_single(instance->pdev, - scp-> - request_buffer, - scp-> - request_bufflen, - scp-> - sc_data_direction); - mfi_sgl->sge32[0].length = scp->request_bufflen; - - return 1; - } - - os_sgl = (struct scatterlist *)scp->request_buffer; - sge_count = pci_map_sg(instance->pdev, os_sgl, scp->use_sg, - scp->sc_data_direction); - - for (i = 0; i < sge_count; i++, os_sgl++) { - mfi_sgl->sge32[i].length = sg_dma_len(os_sgl); - mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl); + if (sge_count) { + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + mfi_sgl->sge32[i].length = sg_dma_len(os_sgl); + mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl); + } } - return sge_count; } @@ -481,35 +462,15 @@ megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, int sge_count; struct scatterlist *os_sgl; - /* - * Return 0 if there is no data transfer - */ - if (!scp->request_buffer || !scp->request_bufflen) - return 0; - - if (!scp->use_sg) { - mfi_sgl->sge64[0].phys_addr = pci_map_single(instance->pdev, - scp-> - request_buffer, - scp-> - request_bufflen, - scp-> - sc_data_direction); - - mfi_sgl->sge64[0].length = scp->request_bufflen; - - return 1; - } - - os_sgl = (struct scatterlist *)scp->request_buffer; - sge_count = pci_map_sg(instance->pdev, os_sgl, scp->use_sg, - scp->sc_data_direction); + sge_count = scsi_dma_map(scp); + BUG_ON(sge_count < 0); - for (i = 0; i < sge_count; i++, os_sgl++) { - mfi_sgl->sge64[i].length = sg_dma_len(os_sgl); - mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl); + if (sge_count) { + scsi_for_each_sg(scp, os_sgl, sge_count, i) { + mfi_sgl->sge64[i].length = sg_dma_len(os_sgl); + mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl); + } } - return sge_count; } @@ -593,7 +554,7 @@ megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, pthru->cdb_len = scp->cmd_len; pthru->timeout = 0; pthru->flags = flags; - pthru->data_xfer_len = scp->request_bufflen; + pthru->data_xfer_len = scsi_bufflen(scp); memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); @@ -1195,45 +1156,6 @@ megasas_complete_abort(struct megasas_instance *instance, } /** - * megasas_unmap_sgbuf - Unmap SG buffers - * @instance: Adapter soft state - * @cmd: Completed command - */ -static void -megasas_unmap_sgbuf(struct megasas_instance *instance, struct megasas_cmd *cmd) -{ - dma_addr_t buf_h; - u8 opcode; - - if (cmd->scmd->use_sg) { - pci_unmap_sg(instance->pdev, cmd->scmd->request_buffer, - cmd->scmd->use_sg, cmd->scmd->sc_data_direction); - return; - } - - if (!cmd->scmd->request_bufflen) - return; - - opcode = cmd->frame->hdr.cmd; - - if ((opcode == MFI_CMD_LD_READ) || (opcode == MFI_CMD_LD_WRITE)) { - if (IS_DMA64) - buf_h = cmd->frame->io.sgl.sge64[0].phys_addr; - else - buf_h = cmd->frame->io.sgl.sge32[0].phys_addr; - } else { - if (IS_DMA64) - buf_h = cmd->frame->pthru.sgl.sge64[0].phys_addr; - else - buf_h = cmd->frame->pthru.sgl.sge32[0].phys_addr; - } - - pci_unmap_single(instance->pdev, buf_h, cmd->scmd->request_bufflen, - cmd->scmd->sc_data_direction); - return; -} - -/** * megasas_complete_cmd - Completes a command * @instance: Adapter soft state * @cmd: Command to be completed @@ -1281,7 +1203,7 @@ megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, atomic_dec(&instance->fw_outstanding); - megasas_unmap_sgbuf(instance, cmd); + scsi_dma_unmap(cmd->scmd); cmd->scmd->scsi_done(cmd->scmd); megasas_return_cmd(instance, cmd); @@ -1329,7 +1251,7 @@ megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, atomic_dec(&instance->fw_outstanding); - megasas_unmap_sgbuf(instance, cmd); + scsi_dma_unmap(cmd->scmd); cmd->scmd->scsi_done(cmd->scmd); megasas_return_cmd(instance, cmd); |