diff options
| -rw-r--r-- | drivers/scsi/ncr53c8xx.c | 70 |
1 files changed, 11 insertions, 59 deletions
diff --git a/drivers/scsi/ncr53c8xx.c b/drivers/scsi/ncr53c8xx.c index bbf521cbc55d..030ba49f33ff 100644 --- a/drivers/scsi/ncr53c8xx.c +++ b/drivers/scsi/ncr53c8xx.c @@ -529,43 +529,20 @@ static void __unmap_scsi_data(struct device *dev, struct scsi_cmnd *cmd) { switch(cmd->__data_mapped) { case 2: - dma_unmap_sg(dev, cmd->request_buffer, cmd->use_sg, - cmd->sc_data_direction); - break; - case 1: - dma_unmap_single(dev, cmd->__data_mapping, - cmd->request_bufflen, - cmd->sc_data_direction); + scsi_dma_unmap(cmd); break; } cmd->__data_mapped = 0; } -static u_long __map_scsi_single_data(struct device *dev, struct scsi_cmnd *cmd) -{ - dma_addr_t mapping; - - if (cmd->request_bufflen == 0) - return 0; - - mapping = dma_map_single(dev, cmd->request_buffer, - cmd->request_bufflen, - cmd->sc_data_direction); - cmd->__data_mapped = 1; - cmd->__data_mapping = mapping; - - return mapping; -} - static int __map_scsi_sg_data(struct device *dev, struct scsi_cmnd *cmd) { int use_sg; - if (cmd->use_sg == 0) + use_sg = scsi_dma_map(cmd); + if (!use_sg) return 0; - use_sg = dma_map_sg(dev, cmd->request_buffer, cmd->use_sg, - cmd->sc_data_direction); cmd->__data_mapped = 2; cmd->__data_mapping = use_sg; @@ -573,7 +550,6 @@ static int __map_scsi_sg_data(struct device *dev, struct scsi_cmnd *cmd) } #define unmap_scsi_data(np, cmd) __unmap_scsi_data(np->dev, cmd) -#define map_scsi_single_data(np, cmd) __map_scsi_single_data(np->dev, cmd) #define map_scsi_sg_data(np, cmd) __map_scsi_sg_data(np->dev, cmd) /*========================================================== @@ -7667,39 +7643,16 @@ fail: ** sizes to the data segment array. */ -static int ncr_scatter_no_sglist(struct ncb *np, struct ccb *cp, struct scsi_cmnd *cmd) -{ - struct scr_tblmove *data = &cp->phys.data[MAX_SCATTER - 1]; - int segment; - - cp->data_len = cmd->request_bufflen; - - if (cmd->request_bufflen) { - dma_addr_t baddr = map_scsi_single_data(np, cmd); - if (baddr) { - ncr_build_sge(np, data, baddr, cmd->request_bufflen); - segment = 1; - } else { - segment = -2; - } - } else { - segment = 0; - } - - return segment; -} - static int ncr_scatter(struct ncb *np, struct ccb *cp, struct scsi_cmnd *cmd) { int segment = 0; - int use_sg = (int) cmd->use_sg; + int use_sg = scsi_sg_count(cmd); cp->data_len = 0; - if (!use_sg) - segment = ncr_scatter_no_sglist(np, cp, cmd); - else if ((use_sg = map_scsi_sg_data(np, cmd)) > 0) { - struct scatterlist *scatter = (struct scatterlist *)cmd->request_buffer; + use_sg = map_scsi_sg_data(np, cmd); + if (use_sg > 0) { + struct scatterlist *sg; struct scr_tblmove *data; if (use_sg > MAX_SCATTER) { @@ -7709,16 +7662,15 @@ static int ncr_scatter(struct ncb *np, struct ccb *cp, struct scsi_cmnd *cmd) data = &cp->phys.data[MAX_SCATTER - use_sg]; - for (segment = 0; segment < use_sg; segment++) { - dma_addr_t baddr = sg_dma_address(&scatter[segment]); - unsigned int len = sg_dma_len(&scatter[segment]); + scsi_for_each_sg(cmd, sg, use_sg, segment) { + dma_addr_t baddr = sg_dma_address(sg); + unsigned int len = sg_dma_len(sg); ncr_build_sge(np, &data[segment], baddr, len); cp->data_len += len; } - } else { + } else segment = -2; - } return segment; } |