From f36516c0d7251d01e8615fbea73a5893970f9a04 Mon Sep 17 00:00:00 2001 From: adam radford Date: Fri, 9 Sep 2005 15:55:13 -0700 Subject: [PATCH] --- yaml --- r: 8726 b: refs/heads/master c: d327d082325a0d4afb3748ef8b59e734e57cfe4c h: refs/heads/master v: v3 --- [refs] | 2 +- trunk/drivers/scsi/3w-9xxx.c | 30 ++++++++++++++++++++++++------ 2 files changed, 25 insertions(+), 7 deletions(-) diff --git a/[refs] b/[refs] index 3f1650927ac7..b11d9419ca9e 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: c7ebbbce366c02e5657ac6b6059933fe0353b175 +refs/heads/master: d327d082325a0d4afb3748ef8b59e734e57cfe4c diff --git a/trunk/drivers/scsi/3w-9xxx.c b/trunk/drivers/scsi/3w-9xxx.c index bc6e4627c7a1..a6ac61611f35 100644 --- a/trunk/drivers/scsi/3w-9xxx.c +++ b/trunk/drivers/scsi/3w-9xxx.c @@ -59,6 +59,7 @@ Fix 'handled=1' ISR usage, remove bogus IRQ check. Remove un-needed eh_abort handler. Add support for embedded firmware error strings. + 2.26.02.003 - Correctly handle single sgl's with use_sg=1. */ #include @@ -81,7 +82,7 @@ #include "3w-9xxx.h" /* Globals */ -#define TW_DRIVER_VERSION "2.26.02.002" +#define TW_DRIVER_VERSION "2.26.02.003" static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT]; static unsigned int twa_device_extension_count; static int twa_major = -1; @@ -1805,6 +1806,8 @@ static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH) { command_packet->sg_list[0].address = tw_dev->generic_buffer_phys[request_id]; command_packet->sg_list[0].length = TW_MIN_SGL_LENGTH; + if (tw_dev->srb[request_id]->sc_data_direction == DMA_TO_DEVICE || tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL) + memcpy(tw_dev->generic_buffer_virt[request_id], tw_dev->srb[request_id]->request_buffer, tw_dev->srb[request_id]->request_bufflen); } else { buffaddr = twa_map_scsi_single_data(tw_dev, request_id); if (buffaddr == 0) @@ -1823,6 +1826,12 @@ static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, if (tw_dev->srb[request_id]->use_sg > 0) { if ((tw_dev->srb[request_id]->use_sg == 1) && (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH)) { + if (tw_dev->srb[request_id]->sc_data_direction == DMA_TO_DEVICE || tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL) { + struct scatterlist *sg = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer; + char *buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; + memcpy(tw_dev->generic_buffer_virt[request_id], buf, sg->length); + kunmap_atomic(buf - sg->offset, KM_IRQ0); + } command_packet->sg_list[0].address = tw_dev->generic_buffer_phys[request_id]; command_packet->sg_list[0].length = TW_MIN_SGL_LENGTH; } else { @@ -1888,11 +1897,20 @@ static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, /* This function completes an execute scsi operation */ static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id) { - /* Copy the response if too small */ - if ((tw_dev->srb[request_id]->request_buffer) && (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH)) { - memcpy(tw_dev->srb[request_id]->request_buffer, - tw_dev->generic_buffer_virt[request_id], - tw_dev->srb[request_id]->request_bufflen); + if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH && + (tw_dev->srb[request_id]->sc_data_direction == DMA_FROM_DEVICE || + tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL)) { + if (tw_dev->srb[request_id]->use_sg == 0) { + memcpy(tw_dev->srb[request_id]->request_buffer, + tw_dev->generic_buffer_virt[request_id], + tw_dev->srb[request_id]->request_bufflen); + } + if (tw_dev->srb[request_id]->use_sg == 1) { + struct scatterlist *sg = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer; + char *buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; + memcpy(buf, tw_dev->generic_buffer_virt[request_id], sg->length); + kunmap_atomic(buf - sg->offset, KM_IRQ0); + } } } /* End twa_scsiop_execute_scsi_complete() */