ieee1394: sbp2: stricter dma_sync
Two dma_sync_single_for_cpu() were called in the wrong place. Luckily they were merely for DMA_TO_DEVICE, hence nobody noticed. Also reorder the matching dma_sync_single_for_device() a little bit so that they reside in the same functions as their counterparts. This also avoids syncing the s/g table for requests which don't use it. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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@ -1533,6 +1533,10 @@ static void sbp2_prep_command_orb_sg(struct sbp2_command_orb *orb,
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orb->misc |= ORB_SET_PAGE_TABLE_PRESENT(0x1);
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orb->data_descriptor_lo = cmd->sge_dma;
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dma_sync_single_for_cpu(hi->host->device.parent, cmd->sge_dma,
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sizeof(cmd->scatter_gather_element),
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DMA_TO_DEVICE);
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/* loop through and fill out our SBP-2 page tables
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* (and split up anything too large) */
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for (i = 0, sg_count = 0; i < count; i++, sg = sg_next(sg)) {
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@ -1559,6 +1563,11 @@ static void sbp2_prep_command_orb_sg(struct sbp2_command_orb *orb,
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sbp2util_cpu_to_be32_buffer(sg_element,
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(sizeof(struct sbp2_unrestricted_page_table)) *
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sg_count);
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dma_sync_single_for_device(hi->host->device.parent,
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cmd->sge_dma,
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sizeof(cmd->scatter_gather_element),
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DMA_TO_DEVICE);
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}
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}
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@ -1566,12 +1575,14 @@ static void sbp2_create_command_orb(struct sbp2_lu *lu,
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struct sbp2_command_info *cmd,
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struct scsi_cmnd *SCpnt)
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{
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struct sbp2_fwhost_info *hi = lu->hi;
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struct device *dmadev = lu->hi->host->device.parent;
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struct sbp2_command_orb *orb = &cmd->command_orb;
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u32 orb_direction;
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unsigned int scsi_request_bufflen = scsi_bufflen(SCpnt);
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enum dma_data_direction dma_dir = SCpnt->sc_data_direction;
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dma_sync_single_for_cpu(dmadev, cmd->command_orb_dma,
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sizeof(struct sbp2_command_orb), DMA_TO_DEVICE);
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/*
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* Set-up our command ORB.
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*
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@ -1603,7 +1614,7 @@ static void sbp2_create_command_orb(struct sbp2_lu *lu,
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orb->data_descriptor_lo = 0x0;
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orb->misc |= ORB_SET_DIRECTION(1);
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} else
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sbp2_prep_command_orb_sg(orb, hi, cmd, scsi_sg_count(SCpnt),
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sbp2_prep_command_orb_sg(orb, lu->hi, cmd, scsi_sg_count(SCpnt),
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scsi_sglist(SCpnt),
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orb_direction, dma_dir);
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@ -1611,6 +1622,9 @@ static void sbp2_create_command_orb(struct sbp2_lu *lu,
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memset(orb->cdb, 0, sizeof(orb->cdb));
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memcpy(orb->cdb, SCpnt->cmnd, SCpnt->cmd_len);
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dma_sync_single_for_device(dmadev, cmd->command_orb_dma,
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sizeof(struct sbp2_command_orb), DMA_TO_DEVICE);
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}
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static void sbp2_link_orb_command(struct sbp2_lu *lu,
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@ -1624,14 +1638,6 @@ static void sbp2_link_orb_command(struct sbp2_lu *lu,
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size_t length;
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unsigned long flags;
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dma_sync_single_for_device(hi->host->device.parent,
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cmd->command_orb_dma,
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sizeof(struct sbp2_command_orb),
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DMA_TO_DEVICE);
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dma_sync_single_for_device(hi->host->device.parent, cmd->sge_dma,
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sizeof(cmd->scatter_gather_element),
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DMA_TO_DEVICE);
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/* check to see if there are any previous orbs to use */
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spin_lock_irqsave(&lu->cmd_orb_lock, flags);
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last_orb = lu->last_orb;
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@ -1789,13 +1795,6 @@ static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid,
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else
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cmd = sbp2util_find_command_for_orb(lu, sb->ORB_offset_lo);
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if (cmd) {
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dma_sync_single_for_cpu(hi->host->device.parent,
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cmd->command_orb_dma,
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sizeof(struct sbp2_command_orb),
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DMA_TO_DEVICE);
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dma_sync_single_for_cpu(hi->host->device.parent, cmd->sge_dma,
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sizeof(cmd->scatter_gather_element),
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DMA_TO_DEVICE);
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/* Grab SCSI command pointers and check status. */
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/*
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* FIXME: If the src field in the status is 1, the ORB DMA must
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@ -1912,7 +1911,6 @@ done:
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static void sbp2scsi_complete_all_commands(struct sbp2_lu *lu, u32 status)
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{
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struct sbp2_fwhost_info *hi = lu->hi;
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struct list_head *lh;
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struct sbp2_command_info *cmd;
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unsigned long flags;
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@ -1921,13 +1919,6 @@ static void sbp2scsi_complete_all_commands(struct sbp2_lu *lu, u32 status)
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while (!list_empty(&lu->cmd_orb_inuse)) {
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lh = lu->cmd_orb_inuse.next;
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cmd = list_entry(lh, struct sbp2_command_info, list);
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dma_sync_single_for_cpu(hi->host->device.parent,
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cmd->command_orb_dma,
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sizeof(struct sbp2_command_orb),
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DMA_TO_DEVICE);
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dma_sync_single_for_cpu(hi->host->device.parent, cmd->sge_dma,
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sizeof(cmd->scatter_gather_element),
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DMA_TO_DEVICE);
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sbp2util_mark_command_completed(lu, cmd);
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if (cmd->Current_SCpnt) {
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cmd->Current_SCpnt->result = status << 16;
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@ -2049,7 +2040,6 @@ static void sbp2scsi_slave_destroy(struct scsi_device *sdev)
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static int sbp2scsi_abort(struct scsi_cmnd *SCpnt)
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{
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struct sbp2_lu *lu = (struct sbp2_lu *)SCpnt->device->host->hostdata[0];
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struct sbp2_fwhost_info *hi = lu->hi;
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struct sbp2_command_info *cmd;
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unsigned long flags;
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@ -2063,14 +2053,6 @@ static int sbp2scsi_abort(struct scsi_cmnd *SCpnt)
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spin_lock_irqsave(&lu->cmd_orb_lock, flags);
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cmd = sbp2util_find_command_for_SCpnt(lu, SCpnt);
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if (cmd) {
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dma_sync_single_for_cpu(hi->host->device.parent,
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cmd->command_orb_dma,
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sizeof(struct sbp2_command_orb),
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DMA_TO_DEVICE);
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dma_sync_single_for_cpu(hi->host->device.parent,
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cmd->sge_dma,
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sizeof(cmd->scatter_gather_element),
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DMA_TO_DEVICE);
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sbp2util_mark_command_completed(lu, cmd);
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if (cmd->Current_SCpnt) {
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cmd->Current_SCpnt->result = DID_ABORT << 16;
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