diff options
author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2007-05-14 15:00:04 +0400 |
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committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-05-27 22:10:08 +0400 |
commit | d7dea2cf80f0c9eea795b4012e4c86205dda9882 (patch) | |
tree | 385769ae8370e4c931ad968c2d7d731d235b5d97 /drivers/ieee1394 | |
parent | 6cad75a61d802c5f4f4299103b8f95aeb3ee9876 (diff) | |
download | linux-d7dea2cf80f0c9eea795b4012e4c86205dda9882.tar.xz |
[SCSI] sbp2: 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>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/ieee1394')
-rw-r--r-- | drivers/ieee1394/sbp2.c | 75 |
1 files changed, 4 insertions, 71 deletions
diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c index 4cb6fa2bcfb7..d0db6f8b5206 100644 --- a/drivers/ieee1394/sbp2.c +++ b/drivers/ieee1394/sbp2.c @@ -1488,69 +1488,6 @@ static void sbp2_prep_command_orb_sg(struct sbp2_command_orb *orb, } } -static void sbp2_prep_command_orb_no_sg(struct sbp2_command_orb *orb, - struct sbp2_fwhost_info *hi, - struct sbp2_command_info *cmd, - struct scatterlist *sgpnt, - u32 orb_direction, - unsigned int scsi_request_bufflen, - void *scsi_request_buffer, - enum dma_data_direction dma_dir) -{ - cmd->dma_dir = dma_dir; - cmd->dma_size = scsi_request_bufflen; - cmd->dma_type = CMD_DMA_SINGLE; - cmd->cmd_dma = dma_map_single(hi->host->device.parent, - scsi_request_buffer, - cmd->dma_size, cmd->dma_dir); - orb->data_descriptor_hi = ORB_SET_NODE_ID(hi->host->node_id); - orb->misc |= ORB_SET_DIRECTION(orb_direction); - - /* handle case where we get a command w/o s/g enabled - * (but check for transfers larger than 64K) */ - if (scsi_request_bufflen <= SBP2_MAX_SG_ELEMENT_LENGTH) { - - orb->data_descriptor_lo = cmd->cmd_dma; - orb->misc |= ORB_SET_DATA_SIZE(scsi_request_bufflen); - - } else { - /* The buffer is too large. Turn this into page tables. */ - - struct sbp2_unrestricted_page_table *sg_element = - &cmd->scatter_gather_element[0]; - u32 sg_count, sg_len; - dma_addr_t sg_addr; - - orb->data_descriptor_lo = cmd->sge_dma; - orb->misc |= ORB_SET_PAGE_TABLE_PRESENT(0x1); - - /* fill out our SBP-2 page tables; split up the large buffer */ - sg_count = 0; - sg_len = scsi_request_bufflen; - sg_addr = cmd->cmd_dma; - while (sg_len) { - sg_element[sg_count].segment_base_lo = sg_addr; - if (sg_len > SBP2_MAX_SG_ELEMENT_LENGTH) { - sg_element[sg_count].length_segment_base_hi = - PAGE_TABLE_SET_SEGMENT_LENGTH(SBP2_MAX_SG_ELEMENT_LENGTH); - sg_addr += SBP2_MAX_SG_ELEMENT_LENGTH; - sg_len -= SBP2_MAX_SG_ELEMENT_LENGTH; - } else { - sg_element[sg_count].length_segment_base_hi = - PAGE_TABLE_SET_SEGMENT_LENGTH(sg_len); - sg_len = 0; - } - sg_count++; - } - - orb->misc |= ORB_SET_DATA_SIZE(sg_count); - - sbp2util_cpu_to_be32_buffer(sg_element, - (sizeof(struct sbp2_unrestricted_page_table)) * - sg_count); - } -} - static void sbp2_create_command_orb(struct sbp2_lu *lu, struct sbp2_command_info *cmd, unchar *scsi_cmd, @@ -1594,13 +1531,9 @@ static void sbp2_create_command_orb(struct sbp2_lu *lu, orb->data_descriptor_hi = 0x0; orb->data_descriptor_lo = 0x0; orb->misc |= ORB_SET_DIRECTION(1); - } else if (scsi_use_sg) + } else sbp2_prep_command_orb_sg(orb, hi, cmd, scsi_use_sg, sgpnt, orb_direction, dma_dir); - else - sbp2_prep_command_orb_no_sg(orb, hi, cmd, sgpnt, orb_direction, - scsi_request_bufflen, - scsi_request_buffer, dma_dir); sbp2util_cpu_to_be32_buffer(orb, sizeof(*orb)); @@ -1689,15 +1622,15 @@ static int sbp2_send_command(struct sbp2_lu *lu, struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) { unchar *scsi_cmd = (unchar *)SCpnt->cmnd; - unsigned int request_bufflen = SCpnt->request_bufflen; + unsigned int request_bufflen = scsi_bufflen(SCpnt); struct sbp2_command_info *cmd; cmd = sbp2util_allocate_command_orb(lu, SCpnt, done); if (!cmd) return -EIO; - sbp2_create_command_orb(lu, cmd, scsi_cmd, SCpnt->use_sg, - request_bufflen, SCpnt->request_buffer, + sbp2_create_command_orb(lu, cmd, scsi_cmd, scsi_sg_count(SCpnt), + request_bufflen, scsi_sglist(SCpnt), SCpnt->sc_data_direction); sbp2_link_orb_command(lu, cmd); |