diff options
67 files changed, 493 insertions, 407 deletions
diff --git a/arch/ia64/hp/sim/simscsi.c b/arch/ia64/hp/sim/simscsi.c index 6ef9b521993..7661bb065fa 100644 --- a/arch/ia64/hp/sim/simscsi.c +++ b/arch/ia64/hp/sim/simscsi.c @@ -360,7 +360,6 @@ static struct scsi_host_template driver_template = { .max_sectors = 1024, .cmd_per_lun = SIMSCSI_REQ_QUEUE_LEN, .use_clustering = DISABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; static int __init diff --git a/block/bsg.c b/block/bsg.c index 69b0a9d3330..8917c5174dc 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -279,6 +279,7 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr) goto out; } rq->next_rq = next_rq; + next_rq->cmd_type = rq->cmd_type; dxferp = (void*)(unsigned long)hdr->din_xferp; ret = blk_rq_map_user(q, next_rq, dxferp, hdr->din_xfer_len); diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index f2d2c7e2c76..195ce7c1231 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -1571,7 +1571,6 @@ static struct scsi_host_template srp_template = { .this_id = -1, .cmd_per_lun = SRP_SQ_SIZE, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .shost_attrs = srp_host_attrs }; diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index e45f85f7c7e..0dff05840ee 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -4224,10 +4224,10 @@ zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *fsf_req) ZFCP_LOG_TRACE("%i bytes sense data provided by FCP\n", fcp_rsp_iu->fcp_sns_len); - memcpy(&scpnt->sense_buffer, + memcpy(scpnt->sense_buffer, zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); ZFCP_HEX_DUMP(ZFCP_LOG_LEVEL_TRACE, - (void *) &scpnt->sense_buffer, sns_len); + (void *)scpnt->sense_buffer, sns_len); } /* check for overrun */ diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c index 1c244832c6c..b4912d1cee2 100644 --- a/drivers/scsi/3w-9xxx.c +++ b/drivers/scsi/3w-9xxx.c @@ -1990,7 +1990,6 @@ static struct scsi_host_template driver_template = { .max_sectors = TW_MAX_SECTORS, .cmd_per_lun = TW_MAX_CMDS_PER_LUN, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .shost_attrs = twa_host_attrs, .emulated = 1 }; diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c index 59716ebeb10..d0953216221 100644 --- a/drivers/scsi/3w-xxxx.c +++ b/drivers/scsi/3w-xxxx.c @@ -2261,7 +2261,6 @@ static struct scsi_host_template driver_template = { .max_sectors = TW_MAX_SECTORS, .cmd_per_lun = TW_MAX_CMDS_PER_LUN, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .shost_attrs = tw_host_attrs, .emulated = 1 }; diff --git a/drivers/scsi/BusLogic.c b/drivers/scsi/BusLogic.c index ead47c143ce..4d3ebb1af49 100644 --- a/drivers/scsi/BusLogic.c +++ b/drivers/scsi/BusLogic.c @@ -3575,7 +3575,6 @@ static struct scsi_host_template Bus_Logic_template = { .unchecked_isa_dma = 1, .max_sectors = 128, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; /* diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 3e161cd6646..14fc7f39e83 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -345,7 +345,7 @@ config ISCSI_TCP config SGIWD93_SCSI tristate "SGI WD93C93 SCSI Driver" - depends on SGI_IP22 && SCSI + depends on SGI_HAS_WD93 && SCSI help If you have a Western Digital WD93 SCSI controller on an SGI MIPS system, say Y. Otherwise, say N. diff --git a/drivers/scsi/NCR53c406a.c b/drivers/scsi/NCR53c406a.c index 137d065db3d..6961f78742a 100644 --- a/drivers/scsi/NCR53c406a.c +++ b/drivers/scsi/NCR53c406a.c @@ -1065,7 +1065,6 @@ static struct scsi_host_template driver_template = .cmd_per_lun = 1 /* commands per lun */, .unchecked_isa_dma = 1 /* unchecked_isa_dma */, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; #include "scsi_module.c" diff --git a/drivers/scsi/a100u2w.c b/drivers/scsi/a100u2w.c index d3a6d15fb77..f608d4a1d6d 100644 --- a/drivers/scsi/a100u2w.c +++ b/drivers/scsi/a100u2w.c @@ -1071,7 +1071,6 @@ static struct scsi_host_template inia100_template = { .sg_tablesize = SG_ALL, .cmd_per_lun = 1, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; static int __devinit inia100_probe_one(struct pci_dev *pdev, diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c index 851a7e599c5..f8afa358b6b 100644 --- a/drivers/scsi/aacraid/commctrl.c +++ b/drivers/scsi/aacraid/commctrl.c @@ -243,7 +243,6 @@ static int next_getadapter_fib(struct aac_dev * dev, void __user *arg) * Search the list of AdapterFibContext addresses on the adapter * to be sure this is a valid address */ - spin_lock_irqsave(&dev->fib_lock, flags); entry = dev->fib_list.next; fibctx = NULL; @@ -252,25 +251,24 @@ static int next_getadapter_fib(struct aac_dev * dev, void __user *arg) /* * Extract the AdapterFibContext from the Input parameters. */ - if (fibctx->unique == f.fibctx) { /* We found a winner */ + if (fibctx->unique == f.fibctx) { /* We found a winner */ break; } entry = entry->next; fibctx = NULL; } if (!fibctx) { - spin_unlock_irqrestore(&dev->fib_lock, flags); dprintk ((KERN_INFO "Fib Context not found\n")); return -EINVAL; } if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) || (fibctx->size != sizeof(struct aac_fib_context))) { - spin_unlock_irqrestore(&dev->fib_lock, flags); dprintk ((KERN_INFO "Fib Context corrupt?\n")); return -EINVAL; } status = 0; + spin_lock_irqsave(&dev->fib_lock, flags); /* * If there are no fibs to send back, then either wait or return * -EAGAIN @@ -328,9 +326,7 @@ return_fib: int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx) { struct fib *fib; - unsigned long flags; - spin_lock_irqsave(&dev->fib_lock, flags); /* * First free any FIBs that have not been consumed. */ @@ -353,7 +349,6 @@ int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx) * Remove the Context from the AdapterFibContext List */ list_del(&fibctx->next); - spin_unlock_irqrestore(&dev->fib_lock, flags); /* * Invalidate context */ @@ -419,8 +414,8 @@ static int close_getadapter_fib(struct aac_dev * dev, void __user *arg) * @arg: ioctl arguments * * This routine returns the driver version. - * Under Linux, there have been no version incompatibilities, so this is - * simple! + * Under Linux, there have been no version incompatibilities, so this is + * simple! */ static int check_revision(struct aac_dev *dev, void __user *arg) @@ -468,7 +463,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) u32 data_dir; void __user *sg_user[32]; void *sg_list[32]; - u32 sg_indx = 0; + u32 sg_indx = 0; u32 byte_count = 0; u32 actual_fibsize64, actual_fibsize = 0; int i; @@ -522,11 +517,11 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) // Fix up srb for endian and force some values srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi); // Force this - srbcmd->channel = cpu_to_le32(user_srbcmd->channel); + srbcmd->channel = cpu_to_le32(user_srbcmd->channel); srbcmd->id = cpu_to_le32(user_srbcmd->id); - srbcmd->lun = cpu_to_le32(user_srbcmd->lun); - srbcmd->timeout = cpu_to_le32(user_srbcmd->timeout); - srbcmd->flags = cpu_to_le32(flags); + srbcmd->lun = cpu_to_le32(user_srbcmd->lun); + srbcmd->timeout = cpu_to_le32(user_srbcmd->timeout); + srbcmd->flags = cpu_to_le32(flags); srbcmd->retry_limit = 0; // Obsolete parameter srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size); memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb)); @@ -791,9 +786,9 @@ static int aac_get_pci_info(struct aac_dev* dev, void __user *arg) pci_info.bus = dev->pdev->bus->number; pci_info.slot = PCI_SLOT(dev->pdev->devfn); - if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) { - dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n")); - return -EFAULT; + if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) { + dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n")); + return -EFAULT; } return 0; } diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index 61be22774e9..0e8267c1e91 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -1032,7 +1032,6 @@ static struct scsi_host_template aac_driver_template = { .cmd_per_lun = AAC_NUM_IO_FIB, #endif .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .emulated = 1, }; diff --git a/drivers/scsi/aha1740.c b/drivers/scsi/aha1740.c index be58a0b097c..7c45d88a205 100644 --- a/drivers/scsi/aha1740.c +++ b/drivers/scsi/aha1740.c @@ -563,7 +563,6 @@ static struct scsi_host_template aha1740_template = { .sg_tablesize = AHA1740_SCATTER, .cmd_per_lun = AHA1740_CMDLUN, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .eh_abort_handler = aha1740_eh_abort_handler, }; diff --git a/drivers/scsi/aic7xxx/aic79xx.h b/drivers/scsi/aic7xxx/aic79xx.h index ce638aa6005..2f00467b6b8 100644 --- a/drivers/scsi/aic7xxx/aic79xx.h +++ b/drivers/scsi/aic7xxx/aic79xx.h @@ -1340,8 +1340,10 @@ struct ahd_pci_identity *ahd_find_pci_device(ahd_dev_softc_t); int ahd_pci_config(struct ahd_softc *, struct ahd_pci_identity *); int ahd_pci_test_register_access(struct ahd_softc *); +#ifdef CONFIG_PM void ahd_pci_suspend(struct ahd_softc *); void ahd_pci_resume(struct ahd_softc *); +#endif /************************** SCB and SCB queue management **********************/ void ahd_qinfifo_requeue_tail(struct ahd_softc *ahd, @@ -1352,8 +1354,10 @@ struct ahd_softc *ahd_alloc(void *platform_arg, char *name); int ahd_softc_init(struct ahd_softc *); void ahd_controller_info(struct ahd_softc *ahd, char *buf); int ahd_init(struct ahd_softc *ahd); +#ifdef CONFIG_PM int ahd_suspend(struct ahd_softc *ahd); void ahd_resume(struct ahd_softc *ahd); +#endif int ahd_default_config(struct ahd_softc *ahd); int ahd_parse_vpddata(struct ahd_softc *ahd, struct vpd_config *vpd); @@ -1361,7 +1365,6 @@ int ahd_parse_cfgdata(struct ahd_softc *ahd, struct seeprom_config *sc); void ahd_intr_enable(struct ahd_softc *ahd, int enable); void ahd_pause_and_flushwork(struct ahd_softc *ahd); -int ahd_suspend(struct ahd_softc *ahd); void ahd_set_unit(struct ahd_softc *, int); void ahd_set_name(struct ahd_softc *, char *); struct scb *ahd_get_scb(struct ahd_softc *ahd, u_int col_idx); diff --git a/drivers/scsi/aic7xxx/aic79xx_core.c b/drivers/scsi/aic7xxx/aic79xx_core.c index a7dd8cdda47..ade0fb8fbdb 100644 --- a/drivers/scsi/aic7xxx/aic79xx_core.c +++ b/drivers/scsi/aic7xxx/aic79xx_core.c @@ -7175,6 +7175,7 @@ ahd_pause_and_flushwork(struct ahd_softc *ahd) ahd->flags &= ~AHD_ALL_INTERRUPTS; } +#ifdef CONFIG_PM int ahd_suspend(struct ahd_softc *ahd) { @@ -7197,6 +7198,7 @@ ahd_resume(struct ahd_softc *ahd) ahd_intr_enable(ahd, TRUE); ahd_restart(ahd); } +#endif /************************** Busy Target Table *********************************/ /* diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c index 0e4708fd43c..01465479290 100644 --- a/drivers/scsi/aic7xxx/aic79xx_osm.c +++ b/drivers/scsi/aic7xxx/aic79xx_osm.c @@ -766,7 +766,6 @@ struct scsi_host_template aic79xx_driver_template = { .max_sectors = 8192, .cmd_per_lun = 2, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .slave_alloc = ahd_linux_slave_alloc, .slave_configure = ahd_linux_slave_configure, .target_alloc = ahd_linux_target_alloc, @@ -1922,7 +1921,7 @@ ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) struct scsi_sense_data *sense; sense = (struct scsi_sense_data *) - &cmd->sense_buffer; + cmd->sense_buffer; if (sense->extra_len >= 5 && (sense->add_sense_code == 0x47 || sense->add_sense_code == 0x48)) diff --git a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c index 66f0259edb6..4150c8a8fdc 100644 --- a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c +++ b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c @@ -43,17 +43,6 @@ #include "aic79xx_inline.h" #include "aic79xx_pci.h" -static int ahd_linux_pci_dev_probe(struct pci_dev *pdev, - const struct pci_device_id *ent); -static int ahd_linux_pci_reserve_io_regions(struct ahd_softc *ahd, - u_long *base, u_long *base2); -static int ahd_linux_pci_reserve_mem_region(struct ahd_softc *ahd, - u_long *bus_addr, - uint8_t __iomem **maddr); -static int ahd_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg); -static int ahd_linux_pci_dev_resume(struct pci_dev *pdev); -static void ahd_linux_pci_dev_remove(struct pci_dev *pdev); - /* Define the macro locally since it's different for different class of chips. */ #define ID(x) \ @@ -85,17 +74,7 @@ static struct pci_device_id ahd_linux_pci_id_table[] = { MODULE_DEVICE_TABLE(pci, ahd_linux_pci_id_table); -static struct pci_driver aic79xx_pci_driver = { - .name = "aic79xx", - .probe = ahd_linux_pci_dev_probe, #ifdef CONFIG_PM - .suspend = ahd_linux_pci_dev_suspend, - .resume = ahd_linux_pci_dev_resume, -#endif - .remove = ahd_linux_pci_dev_remove, - .id_table = ahd_linux_pci_id_table -}; - static int ahd_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg) { @@ -139,6 +118,7 @@ ahd_linux_pci_dev_resume(struct pci_dev *pdev) return rc; } +#endif static void ahd_linux_pci_dev_remove(struct pci_dev *pdev) @@ -245,6 +225,17 @@ ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent) return (0); } +static struct pci_driver aic79xx_pci_driver = { + .name = "aic79xx", + .probe = ahd_linux_pci_dev_probe, +#ifdef CONFIG_PM + .suspend = ahd_linux_pci_dev_suspend, + .resume = ahd_linux_pci_dev_resume, +#endif + .remove = ahd_linux_pci_dev_remove, + .id_table = ahd_linux_pci_id_table +}; + int ahd_linux_pci_init(void) { diff --git a/drivers/scsi/aic7xxx/aic79xx_pci.c b/drivers/scsi/aic7xxx/aic79xx_pci.c index 7a203a90601..df853676e66 100644 --- a/drivers/scsi/aic7xxx/aic79xx_pci.c +++ b/drivers/scsi/aic7xxx/aic79xx_pci.c @@ -389,6 +389,7 @@ ahd_pci_config(struct ahd_softc *ahd, struct ahd_pci_identity *entry) return error; } +#ifdef CONFIG_PM void ahd_pci_suspend(struct ahd_softc *ahd) { @@ -415,6 +416,7 @@ ahd_pci_resume(struct ahd_softc *ahd) ahd_pci_write_config(ahd->dev_softc, CSIZE_LATTIME, ahd->suspend_state.pci_state.csize_lattime, /*bytes*/1); } +#endif /* * Perform some simple tests that should catch situations where diff --git a/drivers/scsi/aic7xxx/aic7xxx.h b/drivers/scsi/aic7xxx/aic7xxx.h index 3d4e42d9045..c0344e61765 100644 --- a/drivers/scsi/aic7xxx/aic7xxx.h +++ b/drivers/scsi/aic7xxx/aic7xxx.h @@ -1143,7 +1143,9 @@ struct ahc_pci_identity *ahc_find_pci_device(ahc_dev_softc_t); int ahc_pci_config(struct ahc_softc *, struct ahc_pci_identity *); int ahc_pci_test_register_access(struct ahc_softc *); +#ifdef CONFIG_PM void ahc_pci_resume(struct ahc_softc *ahc); +#endif /*************************** EISA/VL Front End ********************************/ struct aic7770_identity *aic7770_find_device(uint32_t); @@ -1170,8 +1172,10 @@ int ahc_chip_init(struct ahc_softc *ahc); int ahc_init(struct ahc_softc *ahc); void ahc_intr_enable(struct ahc_softc *ahc, int enable); void ahc_pause_and_flushwork(struct ahc_softc *ahc); +#ifdef CONFIG_PM int ahc_suspend(struct ahc_softc *ahc); int ahc_resume(struct ahc_softc *ahc); +#endif void ahc_set_unit(struct ahc_softc *, int); void ahc_set_name(struct ahc_softc *, char *); void ahc_alloc_scbs(struct ahc_softc *ahc); diff --git a/drivers/scsi/aic7xxx/aic7xxx_core.c b/drivers/scsi/aic7xxx/aic7xxx_core.c index f350b5e89e7..6d2ae641273 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_core.c +++ b/drivers/scsi/aic7xxx/aic7xxx_core.c @@ -5078,6 +5078,7 @@ ahc_pause_and_flushwork(struct ahc_softc *ahc) ahc->flags &= ~AHC_ALL_INTERRUPTS; } +#ifdef CONFIG_PM int ahc_suspend(struct ahc_softc *ahc) { @@ -5113,7 +5114,7 @@ ahc_resume(struct ahc_softc *ahc) ahc_restart(ahc); return (0); } - +#endif /************************** Busy Target Table *********************************/ /* * Return the untagged transaction id for a given target/channel lun. diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c index e310e414067..99a3b33a323 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_osm.c +++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c @@ -747,7 +747,6 @@ struct scsi_host_template aic7xxx_driver_template = { .max_sectors = 8192, .cmd_per_lun = 2, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .slave_alloc = ahc_linux_slave_alloc, .slave_configure = ahc_linux_slave_configure, .target_alloc = ahc_linux_target_alloc, @@ -1658,9 +1657,12 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb) untagged_q = &(ahc->untagged_queues[target_offset]); TAILQ_REMOVE(untagged_q, scb, links.tqe); BUG_ON(!TAILQ_EMPTY(untagged_q)); - } - - if ((scb->flags & SCB_ACTIVE) == 0) { + } else if ((scb->flags & SCB_ACTIVE) == 0) { + /* + * Transactions aborted from the untagged queue may + * not have been dispatched to the controller, so + * only check the SCB_ACTIVE flag for tagged transactions. + */ printf("SCB %d done'd twice\n", scb->hscb->tag); ahc_dump_card_state(ahc); panic("Stopping for safety"); diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c index 4488946cff2..dd6e21d6f1d 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c +++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c @@ -42,17 +42,6 @@ #include "aic7xxx_osm.h" #include "aic7xxx_pci.h" -static int ahc_linux_pci_dev_probe(struct pci_dev *pdev, - const struct pci_device_id *ent); -static int ahc_linux_pci_reserve_io_region(struct ahc_softc *ahc, - u_long *base); -static int ahc_linux_pci_reserve_mem_region(struct ahc_softc *ahc, - u_long *bus_addr, - uint8_t __iomem **maddr); -static int ahc_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg); -static int ahc_linux_pci_dev_resume(struct pci_dev *pdev); -static void ahc_linux_pci_dev_remove(struct pci_dev *pdev); - /* Define the macro locally since it's different for different class of chips. */ #define ID(x) ID_C(x, PCI_CLASS_STORAGE_SCSI) @@ -132,17 +121,7 @@ static struct pci_device_id ahc_linux_pci_id_table[] = { MODULE_DEVICE_TABLE(pci, ahc_linux_pci_id_table); -static struct pci_driver aic7xxx_pci_driver = { - .name = "aic7xxx", - .probe = ahc_linux_pci_dev_probe, #ifdef CONFIG_PM - .suspend = ahc_linux_pci_dev_suspend, - .resume = ahc_linux_pci_dev_resume, -#endif - .remove = ahc_linux_pci_dev_remove, - .id_table = ahc_linux_pci_id_table -}; - static int ahc_linux_pci_dev_suspend(struct pci_dev *pdev, pm_message_t mesg) { @@ -182,6 +161,7 @@ ahc_linux_pci_dev_resume(struct pci_dev *pdev) return (ahc_resume(ahc)); } +#endif static void ahc_linux_pci_dev_remove(struct pci_dev *pdev) @@ -289,6 +269,17 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent) return (0); } +static struct pci_driver aic7xxx_pci_driver = { + .name = "aic7xxx", + .probe = ahc_linux_pci_dev_probe, +#ifdef CONFIG_PM + .suspend = ahc_linux_pci_dev_suspend, + .resume = ahc_linux_pci_dev_resume, +#endif + .remove = ahc_linux_pci_dev_remove, + .id_table = ahc_linux_pci_id_table +}; + int ahc_linux_pci_init(void) { diff --git a/drivers/scsi/aic7xxx/aic7xxx_pci.c b/drivers/scsi/aic7xxx/aic7xxx_pci.c index ae35937b805..56848f41e4f 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_pci.c +++ b/drivers/scsi/aic7xxx/aic7xxx_pci.c @@ -2020,6 +2020,7 @@ ahc_pci_chip_init(struct ahc_softc *ahc) return (ahc_chip_init(ahc)); } +#ifdef CONFIG_PM void ahc_pci_resume(struct ahc_softc *ahc) { @@ -2051,6 +2052,7 @@ ahc_pci_resume(struct ahc_softc *ahc) ahc_release_seeprom(&sd); } } +#endif static int ahc_aic785X_setup(struct ahc_softc *ahc) diff --git a/drivers/scsi/aic7xxx_old.c b/drivers/scsi/aic7xxx_old.c index bcb0b870320..3bfd9296bbf 100644 --- a/drivers/scsi/aic7xxx_old.c +++ b/drivers/scsi/aic7xxx_old.c @@ -11141,7 +11141,6 @@ static struct scsi_host_template driver_template = { .max_sectors = 2048, .cmd_per_lun = 3, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; #include "scsi_module.c" diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c index d80dba913a7..f4a202e8df2 100644 --- a/drivers/scsi/arcmsr/arcmsr_hba.c +++ b/drivers/scsi/arcmsr/arcmsr_hba.c @@ -122,7 +122,6 @@ static struct scsi_host_template arcmsr_scsi_host_template = { .max_sectors = ARCMSR_MAX_XFER_SECTORS, .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .shost_attrs = arcmsr_host_attrs, }; #ifdef CONFIG_SCSI_ARCMSR_AER diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c index f93c73c0ba5..22ef3716e78 100644 --- a/drivers/scsi/dc395x.c +++ b/drivers/scsi/dc395x.c @@ -4763,7 +4763,6 @@ static struct scsi_host_template dc395x_driver_template = { .eh_bus_reset_handler = dc395x_eh_bus_reset, .unchecked_isa_dma = 0, .use_clustering = DISABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c index 19cce125124..c9dd8392aab 100644 --- a/drivers/scsi/dpt_i2o.c +++ b/drivers/scsi/dpt_i2o.c @@ -3340,7 +3340,6 @@ static struct scsi_host_template driver_template = { .this_id = 7, .cmd_per_lun = 1, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; #include "scsi_module.c" MODULE_LICENSE("GPL"); diff --git a/drivers/scsi/eata.c b/drivers/scsi/eata.c index 05163cefec1..8be3d76656f 100644 --- a/drivers/scsi/eata.c +++ b/drivers/scsi/eata.c @@ -524,7 +524,6 @@ static struct scsi_host_template driver_template = { .this_id = 7, .unchecked_isa_dma = 1, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; #if !defined(__BIG_ENDIAN_BITFIELD) && !defined(__LITTLE_ENDIAN_BITFIELD) diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 5ea1f986220..880c78bff0e 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -342,7 +342,6 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) shost->use_clustering = sht->use_clustering; shost->ordered_tag = sht->ordered_tag; shost->active_mode = sht->supported_mode; - shost->use_sg_chaining = sht->use_sg_chaining; if (sht->supported_mode == MODE_UNKNOWN) /* means we didn't set it ... default to INITIATOR */ diff --git a/drivers/scsi/hptiop.c b/drivers/scsi/hptiop.c index e7b2f3575ce..ff149ad6bc4 100644 --- a/drivers/scsi/hptiop.c +++ b/drivers/scsi/hptiop.c @@ -573,7 +573,7 @@ static void hptiop_finish_scsi_req(struct hptiop_hba *hba, u32 tag, scsi_set_resid(scp, scsi_bufflen(scp) - le32_to_cpu(req->dataxfer_length)); scp->result = SAM_STAT_CHECK_CONDITION; - memcpy(&scp->sense_buffer, &req->sg_list, + memcpy(scp->sense_buffer, &req->sg_list, min_t(size_t, SCSI_SENSE_BUFFERSIZE, le32_to_cpu(req->dataxfer_length))); break; @@ -906,7 +906,6 @@ static struct scsi_host_template driver_template = { .unchecked_isa_dma = 0, .emulated = 0, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .proc_name = driver_name, .shost_attrs = hptiop_attrs, .this_id = -1, diff --git a/drivers/scsi/ibmmca.c b/drivers/scsi/ibmmca.c index db004a45073..4d15a62914e 100644 --- a/drivers/scsi/ibmmca.c +++ b/drivers/scsi/ibmmca.c @@ -1501,7 +1501,6 @@ static struct scsi_host_template ibmmca_driver_template = { .sg_tablesize = 16, .cmd_per_lun = 1, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; static int ibmmca_probe(struct device *dev) diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c index 30819012898..78d46a900bb 100644 --- a/drivers/scsi/ibmvscsi/ibmvscsi.c +++ b/drivers/scsi/ibmvscsi/ibmvscsi.c @@ -1600,7 +1600,6 @@ static struct scsi_host_template driver_template = { .this_id = -1, .sg_tablesize = SG_ALL, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .shost_attrs = ibmvscsi_attrs, }; diff --git a/drivers/scsi/initio.c b/drivers/scsi/initio.c index a10a5c74b48..0cc8868ea35 100644 --- a/drivers/scsi/initio.c +++ b/drivers/scsi/initio.c @@ -2833,7 +2833,6 @@ static struct scsi_host_template initio_template = { .sg_tablesize = SG_ALL, .cmd_per_lun = 1, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; static int initio_probe_one(struct pci_dev *pdev, diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index e5be5fd4ef5..b6f99dfbb03 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -1933,7 +1933,6 @@ static struct scsi_host_template iscsi_sht = { .eh_device_reset_handler= iscsi_eh_device_reset, .eh_host_reset_handler = iscsi_eh_host_reset, .use_clustering = DISABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .slave_configure = iscsi_tcp_slave_configure, .proc_name = "iscsi_tcp", .this_id = -1, diff --git a/drivers/scsi/libsrp.c b/drivers/scsi/libsrp.c index 5cff0204227..6d6a76e65a6 100644 --- a/drivers/scsi/libsrp.c +++ b/drivers/scsi/libsrp.c @@ -426,8 +426,8 @@ int srp_cmd_queue(struct Scsi_Host *shost, struct srp_cmd *cmd, void *info, sc->SCp.ptr = info; memcpy(sc->cmnd, cmd->cdb, MAX_COMMAND_SIZE); - sc->request_bufflen = len; - sc->request_buffer = (void *) (unsigned long) addr; + sc->sdb.length = len; + sc->sdb.table.sgl = (void *) (unsigned long) addr; sc->tag = tag; err = scsi_tgt_queue_command(sc, itn_id, (struct scsi_lun *)&cmd->lun, cmd->tag); diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 6483c62730b..fc5c3a42b05 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -1459,7 +1459,6 @@ struct scsi_host_template lpfc_template = { .scan_finished = lpfc_scan_finished, .this_id = -1, .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, - .use_sg_chaining = ENABLE_SG_CHAINING, .cmd_per_lun = LPFC_CMD_PER_LUN, .use_clustering = ENABLE_CLUSTERING, .shost_attrs = lpfc_hba_attrs, @@ -1482,7 +1481,6 @@ struct scsi_host_template lpfc_vport_template = { .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, .cmd_per_lun = LPFC_CMD_PER_LUN, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .shost_attrs = lpfc_vport_attrs, .max_sectors = 0xFFFF, }; diff --git a/drivers/scsi/mac53c94.c b/drivers/scsi/mac53c94.c index a035001f443..b12ad7c7c67 100644 --- a/drivers/scsi/mac53c94.c +++ b/drivers/scsi/mac53c94.c @@ -402,7 +402,6 @@ static struct scsi_host_template mac53c94_template = { .sg_tablesize = SG_ALL, .cmd_per_lun = 1, .use_clustering = DISABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; static int mac53c94_probe(struct macio_dev *mdev, const struct of_device_id *match) diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c index 765c24d2bc3..4d59ae8491a 100644 --- a/drivers/scsi/megaraid.c +++ b/drivers/scsi/megaraid.c @@ -4490,7 +4490,6 @@ static struct scsi_host_template megaraid_template = { .sg_tablesize = MAX_SGLIST, .cmd_per_lun = DEF_CMD_PER_LUN, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .eh_abort_handler = megaraid_abort, .eh_device_reset_handler = megaraid_reset, .eh_bus_reset_handler = megaraid_reset, diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c index 24e32e446e7..6db77c00e3e 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.c +++ b/drivers/scsi/megaraid/megaraid_mbox.c @@ -361,7 +361,6 @@ static struct scsi_host_template megaraid_template_g = { .eh_host_reset_handler = megaraid_reset_handler, .change_queue_depth = megaraid_change_queue_depth, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .sdev_attrs = megaraid_sdev_attrs, .shost_attrs = megaraid_shost_attrs, }; diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c index d7ec921865c..672c759ac24 100644 --- a/drivers/scsi/megaraid/megaraid_sas.c +++ b/drivers/scsi/megaraid/megaraid_sas.c @@ -1192,7 +1192,6 @@ static struct scsi_host_template megasas_template = { .eh_timed_out = megasas_reset_timer, .bios_param = megasas_bios_param, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; /** diff --git a/drivers/scsi/mesh.c b/drivers/scsi/mesh.c index 7470ff39ab2..651d09b08f2 100644 --- a/drivers/scsi/mesh.c +++ b/drivers/scsi/mesh.c @@ -1843,7 +1843,6 @@ static struct scsi_host_template mesh_template = { .sg_tablesize = SG_ALL, .cmd_per_lun = 2, .use_clustering = DISABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; static int mesh_probe(struct macio_dev *mdev, const struct of_device_id *match) diff --git a/drivers/scsi/ncr53c8xx.c b/drivers/scsi/ncr53c8xx.c index c02771aa6c9..c5ebf018b37 100644 --- a/drivers/scsi/ncr53c8xx.c +++ b/drivers/scsi/ncr53c8xx.c @@ -4967,7 +4967,7 @@ void ncr_complete (struct ncb *np, struct ccb *cp) sizeof(cp->sense_buf))); if (DEBUG_FLAGS & (DEBUG_RESULT|DEBUG_TINY)) { - u_char * p = (u_char*) & cmd->sense_buffer; + u_char *p = cmd->sense_buffer; int i; PRINT_ADDR(cmd, "sense data:"); for (i=0; i<14; i++) printk (" %x", *p++); diff --git a/drivers/scsi/nsp32.c b/drivers/scsi/nsp32.c index 28161dc95e0..7fed3537215 100644 --- a/drivers/scsi/nsp32.c +++ b/drivers/scsi/nsp32.c @@ -281,7 +281,6 @@ static struct scsi_host_template nsp32_template = { .cmd_per_lun = 1, .this_id = NSP32_HOST_SCSIID, .use_clustering = DISABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .eh_abort_handler = nsp32_eh_abort, .eh_bus_reset_handler = nsp32_eh_bus_reset, .eh_host_reset_handler = nsp32_eh_host_reset, diff --git a/drivers/scsi/pcmcia/sym53c500_cs.c b/drivers/scsi/pcmcia/sym53c500_cs.c index 969b9387a0c..3454a571474 100644 --- a/drivers/scsi/pcmcia/sym53c500_cs.c +++ b/drivers/scsi/pcmcia/sym53c500_cs.c @@ -692,7 +692,6 @@ static struct scsi_host_template sym53c500_driver_template = { .sg_tablesize = 32, .cmd_per_lun = 1, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .shost_attrs = SYM53C500_shost_attrs }; diff --git a/drivers/scsi/qla1280.c b/drivers/scsi/qla1280.c index c94906abfee..68c0d09ffe7 100644 --- a/drivers/scsi/qla1280.c +++ b/drivers/scsi/qla1280.c @@ -4204,7 +4204,6 @@ static struct scsi_host_template qla1280_driver_template = { .sg_tablesize = SG_ALL, .cmd_per_lun = 1, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index aba1e6d4806..3954ed2d7b5 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -131,7 +131,6 @@ static struct scsi_host_template qla2x00_driver_template = { .this_id = -1, .cmd_per_lun = 3, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .sg_tablesize = SG_ALL, /* @@ -163,7 +162,6 @@ struct scsi_host_template qla24xx_driver_template = { .this_id = -1, .cmd_per_lun = 3, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .sg_tablesize = SG_ALL, .max_sectors = 0xFFFF, diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index d3f86646cb0..2e2b9fedffc 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -94,7 +94,6 @@ static struct scsi_host_template qla4xxx_driver_template = { .this_id = -1, .cmd_per_lun = 3, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .sg_tablesize = SG_ALL, .max_sectors = 0xFFFF, diff --git a/drivers/scsi/qlogicfas.c b/drivers/scsi/qlogicfas.c index 1769f965eed..1e874f1fb5c 100644 --- a/drivers/scsi/qlogicfas.c +++ b/drivers/scsi/qlogicfas.c @@ -197,7 +197,6 @@ static struct scsi_host_template qlogicfas_driver_template = { .sg_tablesize = SG_ALL, .cmd_per_lun = 1, .use_clustering = DISABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; static __init int qlogicfas_init(void) diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 1a9fba6a9f9..b35d19472ca 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -757,7 +757,7 @@ void scsi_finish_command(struct scsi_cmnd *cmd) "Notifying upper driver of completion " "(result %x)\n", cmd->result)); - good_bytes = cmd->request_bufflen; + good_bytes = scsi_bufflen(cmd); if (cmd->request->cmd_type != REQ_TYPE_BLOCK_PC) { drv = scsi_cmd_to_driver(cmd); if (drv->done) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 82c06f0a9d0..1541c174937 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -280,6 +280,8 @@ static int resp_write(struct scsi_cmnd * SCpnt, unsigned long long lba, unsigned int num, struct sdebug_dev_info * devip); static int resp_report_luns(struct scsi_cmnd * SCpnt, struct sdebug_dev_info * devip); +static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, + unsigned int num, struct sdebug_dev_info *devip); static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, int arr_len); static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, @@ -311,12 +313,48 @@ static void sdebug_max_tgts_luns(void); static struct device pseudo_primary; static struct bus_type pseudo_lld_bus; +static void get_data_transfer_info(unsigned char *cmd, + unsigned long long *lba, unsigned int *num) +{ + int i; + + switch (*cmd) { + case WRITE_16: + case READ_16: + for (*lba = 0, i = 0; i < 8; ++i) { + if (i > 0) + *lba <<= 8; + *lba += cmd[2 + i]; + } + *num = cmd[13] + (cmd[12] << 8) + + (cmd[11] << 16) + (cmd[10] << 24); + break; + case WRITE_12: + case READ_12: + *lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); + *num = cmd[9] + (cmd[8] << 8) + (cmd[7] << 16) + (cmd[6] << 24); + break; + case WRITE_10: + case READ_10: + case XDWRITEREAD_10: + *lba = cmd[5] + (cmd[4] << 8) + (cmd[3] << 16) + (cmd[2] << 24); + *num = cmd[8] + (cmd[7] << 8); + break; + case WRITE_6: + case READ_6: + *lba = cmd[3] + (cmd[2] << 8) + ((cmd[1] & 0x1f) << 16); + *num = (0 == cmd[4]) ? 256 : cmd[4]; + break; + default: + break; + } +} static int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) { unsigned char *cmd = (unsigned char *) SCpnt->cmnd; - int len, k, j; + int len, k; unsigned int num; unsigned long long lba; int errsts = 0; @@ -452,28 +490,7 @@ int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) break; if (scsi_debug_fake_rw) break; - if ((*cmd) == READ_16) { - for (lba = 0, j = 0; j < 8; ++j) { - if (j > 0) - lba <<= 8; - lba += cmd[2 + j]; - } - num = cmd[13] + (cmd[12] << 8) + - (cmd[11] << 16) + (cmd[10] << 24); - } else if ((*cmd) == READ_12) { - lba = cmd[5] + (cmd[4] << 8) + - (cmd[3] << 16) + (cmd[2] << 24); - num = cmd[9] + (cmd[8] << 8) + - (cmd[7] << 16) + (cmd[6] << 24); - } else if ((*cmd) == READ_10) { - lba = cmd[5] + (cmd[4] << 8) + - (cmd[3] << 16) + (cmd[2] << 24); - num = cmd[8] + (cmd[7] << 8); - } else { /* READ (6) */ - lba = cmd[3] + (cmd[2] << 8) + - ((cmd[1] & 0x1f) << 16); - num = (0 == cmd[4]) ? 256 : cmd[4]; - } + get_data_transfer_info(cmd, &lba, &num); errsts = resp_read(SCpnt, lba, num, devip); if (inj_recovered && (0 == errsts)) { mk_sense_buffer(devip, RECOVERED_ERROR, @@ -500,28 +517,7 @@ int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) break; if (scsi_debug_fake_rw) break; - if ((*cmd) == WRITE_16) { - for (lba = 0, j = 0; j < 8; ++j) { - if (j > 0) - lba <<= 8; - lba += cmd[2 + j]; - } - num = cmd[13] + (cmd[12] << 8) + - (cmd[11] << 16) + (cmd[10] << 24); - } else if ((*cmd) == WRITE_12) { - lba = cmd[5] + (cmd[4] << 8) + - (cmd[3] << 16) + (cmd[2] << 24); - num = cmd[9] + (cmd[8] << 8) + - (cmd[7] << 16) + (cmd[6] << 24); - } else if ((*cmd) == WRITE_10) { - lba = cmd[5] + (cmd[4] << 8) + - (cmd[3] << 16) + (cmd[2] << 24); - num = cmd[8] + (cmd[7] << 8); - } else { /* WRITE (6) */ - lba = cmd[3] + (cmd[2] << 8) + - ((cmd[1] & 0x1f) << 16); - num = (0 == cmd[4]) ? 256 : cmd[4]; - } + get_data_transfer_info(cmd, &lba, &num); errsts = resp_write(SCpnt, lba, num, devip); if (inj_recovered && (0 == errsts)) { mk_sense_buffer(devip, RECOVERED_ERROR, @@ -549,6 +545,28 @@ int scsi_debug_queuecommand(struct scsi_cmnd * SCpnt, done_funct_t done) case WRITE_BUFFER: errsts = check_readiness(SCpnt, 1, devip); break; + case XDWRITEREAD_10: + if (!scsi_bidi_cmnd(SCpnt)) { + mk_sense_buffer(devip, ILLEGAL_REQUEST, + INVALID_FIELD_IN_CDB, 0); + errsts = check_condition_result; + break; + } + + errsts = check_readiness(SCpnt, 0, devip); + if (errsts) + break; + if (scsi_debug_fake_rw) + break; + get_data_transfer_info(cmd, &lba, &num); + errsts = resp_read(SCpnt, lba, num, devip); + if (errsts) + break; + errsts = resp_write(SCpnt, lba, num, devip); + if (errsts) + break; + errsts = resp_xdwriteread(SCpnt, lba, num, devip); + break; default: if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) printk(KERN_INFO "scsi_debug: Opcode: 0x%x not " @@ -601,18 +619,18 @@ static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, int k, req_len, act_len, len, active; void * kaddr; void * kaddr_off; - struct scatterlist * sg; + struct scatterlist *sg; + struct scsi_data_buffer *sdb = scsi_in(scp); - if (0 == scsi_bufflen(scp)) + if (!sdb->length) return 0; - if (NULL == scsi_sglist(scp)) + if (!sdb->table.sgl) return (DID_ERROR << 16); - if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || - (scp->sc_data_direction == DMA_FROM_DEVICE))) + if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_FROM_DEVICE)) return (DID_ERROR << 16); active = 1; req_len = act_len = 0; - scsi_for_each_sg(scp, sg, scsi_sg_count(scp), k) { + for_each_sg(sdb->table.sgl, sg, sdb->table.nents, k) { if (active) { kaddr = (unsigned char *) kmap_atomic(sg_page(sg), KM_USER0); @@ -630,10 +648,10 @@ static int fill_from_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, } req_len += sg->length; } - if (scsi_get_resid(scp)) - scsi_set_resid(scp, scsi_get_resid(scp) - act_len); + if (sdb->resid) + sdb->resid -= act_len; else - scsi_set_resid(scp, req_len - act_len); + sdb->resid = req_len - act_len; return 0; } @@ -650,8 +668,7 @@ static int fetch_to_dev_buffer(struct scsi_cmnd * scp, unsigned char * arr, return 0; if (NULL == scsi_sglist(scp)) return -1; - if (! ((scp->sc_data_direction == DMA_BIDIRECTIONAL) || - (scp->sc_data_direction == DMA_TO_DEVICE))) + if (!(scsi_bidi_cmnd(scp) || scp->sc_data_direction == DMA_TO_DEVICE)) return -1; req_len = fin = 0; scsi_for_each_sg(scp, sg, scsi_sg_count(scp), k) { @@ -1956,6 +1973,50 @@ static int resp_report_luns(struct scsi_cmnd * scp, min((int)alloc_len, SDEBUG_RLUN_ARR_SZ)); } +static int resp_xdwriteread(struct scsi_cmnd *scp, unsigned long long lba, + unsigned int num, struct sdebug_dev_info *devip) +{ + int i, j, ret = -1; + unsigned char *kaddr, *buf; + unsigned int offset; + struct scatterlist *sg; + struct scsi_data_buffer *sdb = scsi_in(scp); + + /* better not to use temporary buffer. */ + buf = kmalloc(scsi_bufflen(scp), GFP_ATOMIC); + if (!buf) + return ret; + + offset = 0; + scsi_for_each_sg(scp, sg, scsi_sg_count(scp), i) { + kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); + if (!kaddr) + goto out; + + memcpy(buf + offset, kaddr + sg->offset, sg->length); + offset += sg->length; + kunmap_atomic(kaddr, KM_USER0); + } + + offset = 0; + for_each_sg(sdb->table.sgl, sg, sdb->table.nents, i) { + kaddr = (unsigned char *)kmap_atomic(sg_page(sg), KM_USER0); + if (!kaddr) + goto out; + + for (j = 0; j < sg->length; j++) + *(kaddr + sg->offset + j) ^= *(buf + offset + j); + + offset += sg->length; + kunmap_atomic(kaddr, KM_USER0); + } + ret = 0; +out: + kfree(buf); + + return ret; +} + /* When timer goes off this function is called. */ static void timer_intr_handler(unsigned long indx) { @@ -1989,6 +2050,7 @@ static int scsi_debug_slave_alloc(struct scsi_device * sdp) if (SCSI_DEBUG_OPT_NOISE & scsi_debug_opts) printk(KERN_INFO "scsi_debug: slave_alloc <%u %u %u %u>\n", sdp->host->host_no, sdp->channel, sdp->id, sdp->lun); + set_bit(QUEUE_FLAG_BIDI, &sdp->request_queue->queue_flags); return 0; } diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 547e85aa414..045a0868fc7 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -617,29 +617,27 @@ void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd, struct scsi_eh_save *ses, ses->cmd_len = scmd->cmd_len; memcpy(ses->cmnd, scmd->cmnd, sizeof(scmd->cmnd)); ses->data_direction = scmd->sc_data_direction; - ses->bufflen = scmd->request_bufflen; - ses->buffer = scmd->request_buffer; - ses->use_sg = scmd->use_sg; - ses->resid = scmd->resid; + ses->sdb = scmd->sdb; + ses->next_rq = scmd->request->next_rq; ses->result = scmd->result; + memset(&scmd->sdb, 0, sizeof(scmd->sdb)); + scmd->request->next_rq = NULL; + if (sense_bytes) { - scmd->request_bufflen = min_t(unsigned, - SCSI_SENSE_BUFFERSIZE, sense_bytes); + scmd->sdb.length = min_t(unsigned, SCSI_SENSE_BUFFERSIZE, + sense_bytes); sg_init_one(&ses->sense_sgl, scmd->sense_buffer, - scmd->request_bufflen); - scmd->request_buffer = &ses->sense_sgl; + scmd->sdb.length); + scmd->sdb.table.sgl = &ses->sense_sgl; scmd->sc_data_direction = DMA_FROM_DEVICE; - scmd->use_sg = 1; + scmd->sdb.table.nents = 1; memset(scmd->cmnd, 0, sizeof(scmd->cmnd)); scmd->cmnd[0] = REQUEST_SENSE; - scmd->cmnd[4] = scmd->request_bufflen; + scmd->cmnd[4] = scmd->sdb.length; scmd->cmd_len = COMMAND_SIZE(scmd->cmnd[0]); } else { - scmd->request_buffer = NULL; - scmd->request_bufflen = 0; scmd->sc_data_direction = DMA_NONE; - scmd->use_sg = 0; if (cmnd) { memset(scmd->cmnd, 0, sizeof(scmd->cmnd)); memcpy(scmd->cmnd, cmnd, cmnd_size); @@ -676,10 +674,8 @@ void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd, struct scsi_eh_save *ses) scmd->cmd_len = ses->cmd_len; memcpy(scmd->cmnd, ses->cmnd, sizeof(scmd->cmnd)); scmd->sc_data_direction = ses->data_direction; - scmd->request_bufflen = ses->bufflen; - scmd->request_buffer = ses->buffer; - scmd->use_sg = ses->use_sg; - scmd->resid = ses->resid; + scmd->sdb = ses->sdb; + scmd->request->next_rq = ses->next_rq; scmd->result = ses->result; } EXPORT_SYMBOL(scsi_eh_restore_cmnd); @@ -1700,8 +1696,7 @@ scsi_reset_provider(struct scsi_device *dev, int flag) memset(&scmd->cmnd, '\0', sizeof(scmd->cmnd)); scmd->scsi_done = scsi_reset_provider_done_command; - scmd->request_buffer = NULL; - scmd->request_bufflen = 0; + memset(&scmd->sdb, 0, sizeof(scmd->sdb)); scmd->cmd_len = 0; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 7c4c889c522..b12fb310e39 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -8,6 +8,7 @@ */ #include <linux/bio.h> +#include <linux/bitops.h> #include <linux/blkdev.h> #include <linux/completion.h> #include <linux/kernel.h> @@ -34,13 +35,6 @@ #define SG_MEMPOOL_NR ARRAY_SIZE(scsi_sg_pools) #define SG_MEMPOOL_SIZE 2 -/* - * The maximum number of SG segments that we will put inside a scatterlist - * (unless chaining is used). Should ideally fit inside a single page, to - * avoid a higher order allocation. - */ -#define SCSI_MAX_SG_SEGMENTS 128 - struct scsi_host_sg_pool { size_t size; char *name; @@ -48,22 +42,31 @@ struct scsi_host_sg_pool { mempool_t *pool; }; -#define SP(x) { x, "sgpool-" #x } +#define SP(x) { x, "sgpool-" __stringify(x) } +#if (SCSI_MAX_SG_SEGMENTS < 32) +#error SCSI_MAX_SG_SEGMENTS is too small (must be 32 or greater) +#endif static struct scsi_host_sg_pool scsi_sg_pools[] = { SP(8), SP(16), -#if (SCSI_MAX_SG_SEGMENTS > 16) - SP(32), #if (SCSI_MAX_SG_SEGMENTS > 32) - SP(64), + SP(32), #if (SCSI_MAX_SG_SEGMENTS > 64) + SP(64), +#if (SCSI_MAX_SG_SEGMENTS > 128) SP(128), +#if (SCSI_MAX_SG_SEGMENTS > 256) +#error SCSI_MAX_SG_SEGMENTS is too large (256 MAX) +#endif #endif #endif #endif + SP(SCSI_MAX_SG_SEGMENTS) }; #undef SP +static struct kmem_cache *scsi_bidi_sdb_cache; + static void scsi_run_queue(struct request_queue *q); /* @@ -440,7 +443,7 @@ EXPORT_SYMBOL_GPL(scsi_execute_async); static void scsi_init_cmd_errh(struct scsi_cmnd *cmd) { cmd->serial_number = 0; - cmd->resid = 0; + scsi_set_resid(cmd, 0); memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); if (cmd->cmd_len == 0) cmd->cmd_len = COMMAND_SIZE(cmd->cmnd[0]); @@ -690,42 +693,16 @@ static struct scsi_cmnd *scsi_end_request(struct scsi_cmnd *cmd, int error, return NULL; } -/* - * Like SCSI_MAX_SG_SEGMENTS, but for archs that have sg chaining. This limit - * is totally arbitrary, a setting of 2048 will get you at least 8mb ios. - */ -#define SCSI_MAX_SG_CHAIN_SEGMENTS 2048 - static inline unsigned int scsi_sgtable_index(unsigned short nents) { unsigned int index; - switch (nents) { - case 1 ... 8: + BUG_ON(nents > SCSI_MAX_SG_SEGMENTS); + + if (nents <= 8) index = 0; - break; - case 9 ... 16: - index = 1; - break; -#if (SCSI_MAX_SG_SEGMENTS > 16) - case 17 ... 32: - index = 2; - break; -#if (SCSI_MAX_SG_SEGMENTS > 32) - case 33 ... 64: - index = 3; - break; -#if (SCSI_MAX_SG_SEGMENTS > 64) - case 65 ... 128: - index = 4; - break; -#endif -#endif -#endif - default: - printk(KERN_ERR "scsi: bad segment count=%d\n", nents); - BUG(); - } + else + index = get_count_order(nents) - 3; return index; } @@ -746,31 +723,27 @@ static struct scatterlist *scsi_sg_alloc(unsigned int nents, gfp_t gfp_mask) return mempool_alloc(sgp->pool, gfp_mask); } -int scsi_alloc_sgtable(struct scsi_cmnd *cmd, gfp_t gfp_mask) +static int scsi_alloc_sgtable(struct scsi_data_buffer *sdb, int nents, + gfp_t gfp_mask) { int ret; - BUG_ON(!cmd->use_sg); + BUG_ON(!nents); - ret = __sg_alloc_table(&cmd->sg_table, cmd->use_sg, - SCSI_MAX_SG_SEGMENTS, gfp_mask, scsi_sg_alloc); + ret = __sg_alloc_table(&sdb->table, nents, SCSI_MAX_SG_SEGMENTS, + gfp_mask, scsi_sg_alloc); if (unlikely(ret)) - __sg_free_table(&cmd->sg_table, SCSI_MAX_SG_SEGMENTS, + __sg_free_table(&sdb->table, SCSI_MAX_SG_SEGMENTS, scsi_sg_free); - cmd->request_buffer = cmd->sg_table.sgl; return ret; } -EXPORT_SYMBOL(scsi_alloc_sgtable); - -void scsi_free_sgtable(struct scsi_cmnd *cmd) +static void scsi_free_sgtable(struct scsi_data_buffer *sdb) { - __sg_free_table(&cmd->sg_table, SCSI_MAX_SG_SEGMENTS, scsi_sg_free); + __sg_free_table(&sdb->table, SCSI_MAX_SG_SEGMENTS, scsi_sg_free); } -EXPORT_SYMBOL(scsi_free_sgtable); - /* * Function: scsi_release_buffers() * @@ -788,17 +761,49 @@ EXPORT_SYMBOL(scsi_free_sgtable); * the scatter-gather table, and potentially any bounce * buffers. */ -static void scsi_release_buffers(struct scsi_cmnd *cmd) +void scsi_release_buffers(struct scsi_cmnd *cmd) +{ + if (cmd->sdb.table.nents) + scsi_free_sgtable(&cmd->sdb); + + memset(&cmd->sdb, 0, sizeof(cmd->sdb)); + + if (scsi_bidi_cmnd(cmd)) { + struct scsi_data_buffer *bidi_sdb = + cmd->request->next_rq->special; + scsi_free_sgtable(bidi_sdb); + kmem_cache_free(scsi_bidi_sdb_cache, bidi_sdb); + cmd->request->next_rq->special = NULL; + } +} +EXPORT_SYMBOL(scsi_release_buffers); + +/* + * Bidi commands Must be complete as a whole, both sides at once. + * If part of the bytes were written and lld returned + * scsi_in()->resid and/or scsi_out()->resid this information will be left + * in req->data_len and req->next_rq->data_len. The upper-layer driver can + * decide what to do with this information. + */ +void scsi_end_bidi_request(struct scsi_cmnd *cmd) { - if (cmd->use_sg) - scsi_free_sgtable(cmd); + struct request *req = cmd->request; + unsigned int dlen = req->data_len; + unsigned int next_dlen = req->next_rq->data_len; + + req->data_len = scsi_out(cmd)->resid; + req->next_rq->data_len = scsi_in(cmd)->resid; + + /* The req and req->next_rq have not been completed */ + BUG_ON(blk_end_bidi_request(req, 0, dlen, next_dlen)); + + scsi_release_buffers(cmd); /* - * Zero these out. They now point to freed memory, and it is - * dangerous to hang onto the pointers. + * This will goose the queue request function at the end, so we don't + * need to worry about launching another command. */ - cmd->request_buffer = NULL; - cmd->request_bufflen = 0; + scsi_next_command(cmd); } /* @@ -832,7 +837,7 @@ static void scsi_release_buffers(struct scsi_cmnd *cmd) void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) { int result = cmd->result; - int this_count = cmd->request_bufflen; + int this_count = scsi_bufflen(cmd); struct request_queue *q = cmd->device->request_queue; struct request *req = cmd->request; int clear_errors = 1; @@ -840,8 +845,6 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) int sense_valid = 0; int sense_deferred = 0; - scsi_release_buffers(cmd); - if (result) { sense_valid = scsi_command_normalize_sense(cmd, &sshdr); if (sense_valid) @@ -864,9 +867,17 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) req->sense_len = len; } } - req->data_len = cmd->resid; + if (scsi_bidi_cmnd(cmd)) { + /* will also release_buffers */ + scsi_end_bidi_request(cmd); + return; + } + req->data_len = scsi_get_resid(cmd); } + BUG_ON(blk_bidi_rq(req)); /* bidi not support for !blk_pc_request yet */ + scsi_release_buffers(cmd); + /* * Next deal with any sectors which we were able to correctly * handle. @@ -874,7 +885,6 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) SCSI_LOG_HLCOMPLETE(1, printk("%ld sectors total, " "%d bytes done.\n", req->nr_sectors, good_bytes)); - SCSI_LOG_HLCOMPLETE(1, printk("use_sg is %d\n", cmd->use_sg)); if (clear_errors) req->errors = 0; @@ -991,52 +1001,80 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) scsi_end_request(cmd, -EIO, this_count, !result); } -/* - * Function: scsi_init_io() - * - * Purpose: SCSI I/O initialize function. - * - * Arguments: cmd - Command descriptor we wish to initialize - * - * Returns: 0 on success - * BLKPREP_DEFER if the failure is retryable - */ -static int scsi_init_io(struct scsi_cmnd *cmd) +static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb, + gfp_t gfp_mask) { - struct request *req = cmd->request; - int count; - - /* - * We used to not use scatter-gather for single segment request, - * but now we do (it makes highmem I/O easier to support without - * kmapping pages) - */ - cmd->use_sg = req->nr_phys_segments; + int count; /* * If sg table allocation fails, requeue request later. */ - if (unlikely(scsi_alloc_sgtable(cmd, GFP_ATOMIC))) { - scsi_unprep_request(req); + if (unlikely(scsi_alloc_sgtable(sdb, req->nr_phys_segments, + gfp_mask))) { return BLKPREP_DEFER; } req->buffer = NULL; if (blk_pc_request(req)) - cmd->request_bufflen = req->data_len; + sdb->length = req->data_len; else - cmd->request_bufflen = req->nr_sectors << 9; + sdb->length = req->nr_sectors << 9; /* * Next, walk the list, and fill in the addresses and sizes of * each segment. */ - count = blk_rq_map_sg(req->q, req, cmd->request_buffer); - BUG_ON(count > cmd->use_sg); - cmd->use_sg = count; + count = blk_rq_map_sg(req->q, req, sdb->table.sgl); + BUG_ON(count > sdb->table.nents); + sdb->table.nents = count; return BLKPREP_OK; } +/* + * Function: scsi_init_io() + * + * Purpose: SCSI I/O initialize function. + * + * Arguments: cmd - Command descriptor we wish to initialize + * + * Returns: 0 on success + * BLKPREP_DEFER if the failure is retryable + * BLKPREP_KILL if the failure is fatal + */ +int scsi_init_io(struct scsi_cmnd *cmd, gfp_t gfp_mask) +{ + int error = scsi_init_sgtable(cmd->request, &cmd->sdb, gfp_mask); + if (error) + goto err_exit; + + if (blk_bidi_rq(cmd->request)) { + struct scsi_data_buffer *bidi_sdb = kmem_cache_zalloc( + scsi_bidi_sdb_cache, GFP_ATOMIC); + if (!bidi_sdb) { + error = BLKPREP_DEFER; + goto err_exit; + } + + cmd->request->next_rq->special = bidi_sdb; + error = scsi_init_sgtable(cmd->request->next_rq, bidi_sdb, + GFP_ATOMIC); + if (error) + goto err_exit; + } + + return BLKPREP_OK ; + +err_exit: + scsi_release_buffers(cmd); + if (error == BLKPREP_KILL) + scsi_put_command(cmd); + else /* BLKPREP_DEFER */ + scsi_unprep_request(cmd->request); + + return error; +} +EXPORT_SYMBOL(scsi_init_io); + static struct scsi_cmnd *scsi_get_cmd_from_req(struct scsi_device *sdev, struct request *req) { @@ -1081,16 +1119,14 @@ int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req) BUG_ON(!req->nr_phys_segments); - ret = scsi_init_io(cmd); + ret = scsi_init_io(cmd, GFP_ATOMIC); if (unlikely(ret)) return ret; } else { BUG_ON(req->data_len); BUG_ON(req->data); - cmd->request_bufflen = 0; - cmd->request_buffer = NULL; - cmd->use_sg = 0; + memset(&cmd->sdb, 0, sizeof(cmd->sdb)); req->buffer = NULL; } @@ -1132,7 +1168,7 @@ int scsi_setup_fs_cmnd(struct scsi_device *sdev, struct request *req) if (unlikely(!cmd)) return BLKPREP_DEFER; - return scsi_init_io(cmd); + return scsi_init_io(cmd, GFP_ATOMIC); } EXPORT_SYMBOL(scsi_setup_fs_cmnd); @@ -1542,20 +1578,7 @@ struct request_queue *__scsi_alloc_queue(struct Scsi_Host *shost, * this limit is imposed by hardware restrictions */ blk_queue_max_hw_segments(q, shost->sg_tablesize); - - /* - * In the future, sg chaining support will be mandatory and this - * ifdef can then go away. Right now we don't have all archs - * converted, so better keep it safe. - */ -#ifdef ARCH_HAS_SG_CHAIN - if (shost->use_sg_chaining) - blk_queue_max_phys_segments(q, SCSI_MAX_SG_CHAIN_SEGMENTS); - else - blk_queue_max_phys_segments(q, SCSI_MAX_SG_SEGMENTS); -#else - blk_queue_max_phys_segments(q, SCSI_MAX_SG_SEGMENTS); -#endif + blk_queue_max_phys_segments(q, SCSI_MAX_SG_CHAIN_SEGMENTS); blk_queue_max_sectors(q, shost->max_sectors); blk_queue_bounce_limit(q, scsi_calculate_bounce_limit(shost)); @@ -1654,6 +1677,14 @@ int __init scsi_init_queue(void) return -ENOMEM; } + scsi_bidi_sdb_cache = kmem_cache_create("scsi_bidi_sdb", + sizeof(struct scsi_data_buffer), + 0, 0, NULL); + if (!scsi_bidi_sdb_cache) { + printk(KERN_ERR "SCSI: can't init scsi bidi sdb cache\n"); + goto cleanup_io_context; + } + for (i = 0; i < SG_MEMPOOL_NR; i++) { struct scsi_host_sg_pool *sgp = scsi_sg_pools + i; int size = sgp->size * sizeof(struct scatterlist); @@ -1663,6 +1694,7 @@ int __init scsi_init_queue(void) if (!sgp->slab) { printk(KERN_ERR "SCSI: can't init sg slab %s\n", sgp->name); + goto cleanup_bidi_sdb; } sgp->pool = mempool_create_slab_pool(SG_MEMPOOL_SIZE, @@ -1670,10 +1702,25 @@ int __init scsi_init_queue(void) if (!sgp->pool) { printk(KERN_ERR "SCSI: can't init sg mempool %s\n", sgp->name); + goto cleanup_bidi_sdb; } } return 0; + +cleanup_bidi_sdb: + for (i = 0; i < SG_MEMPOOL_NR; i++) { + struct scsi_host_sg_pool *sgp = scsi_sg_pools + i; + if (sgp->pool) + mempool_destroy(sgp->pool); + if (sgp->slab) + kmem_cache_destroy(sgp->slab); + } + kmem_cache_destroy(scsi_bidi_sdb_cache); +cleanup_io_context: + kmem_cache_destroy(scsi_io_context_cache); + + return -ENOMEM; } void scsi_exit_queue(void) @@ -1681,6 +1728,7 @@ void scsi_exit_queue(void) int i; kmem_cache_destroy(scsi_io_context_cache); + kmem_cache_destroy(scsi_bidi_sdb_cache); for (i = 0; i < SG_MEMPOOL_NR; i++) { struct scsi_host_sg_pool *sgp = scsi_sg_pools + i; diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c index 01e03f3f6ff..91630baea53 100644 --- a/drivers/scsi/scsi_tgt_lib.c +++ b/drivers/scsi/scsi_tgt_lib.c @@ -331,8 +331,7 @@ static void scsi_tgt_cmd_done(struct scsi_cmnd *cmd) scsi_tgt_uspace_send_status(cmd, tcmd->itn_id, tcmd->tag); - if (scsi_sglist(cmd)) - scsi_free_sgtable(cmd); + scsi_release_buffers(cmd); queue_work(scsi_tgtd, &tcmd->work); } @@ -353,25 +352,6 @@ static int scsi_tgt_transfer_response(struct scsi_cmnd *cmd) return 0; } -static int scsi_tgt_init_cmd(struct scsi_cmnd *cmd, gfp_t gfp_mask) -{ - struct request *rq = cmd->request; - int count; - - cmd->use_sg = rq->nr_phys_segments; - if (scsi_alloc_sgtable(cmd, gfp_mask)) - return -ENOMEM; - - cmd->request_bufflen = rq->data_len; - - dprintk("cmd %p cnt %d %lu\n", cmd, scsi_sg_count(cmd), - rq_data_dir(rq)); - count = blk_rq_map_sg(rq->q, rq, scsi_sglist(cmd)); - BUG_ON(count > cmd->use_sg); - cmd->use_sg = count; - return 0; -} - /* TODO: test this crap and replace bio_map_user with new interface maybe */ static int scsi_map_user_pages(struct scsi_tgt_cmd *tcmd, struct scsi_cmnd *cmd, unsigned long uaddr, unsigned int len, int rw) @@ -397,9 +377,11 @@ static int scsi_map_user_pages(struct scsi_tgt_cmd *tcmd, struct scsi_cmnd *cmd, } tcmd->bio = rq->bio; - err = scsi_tgt_init_cmd(cmd, GFP_KERNEL); - if (err) + err = scsi_init_io(cmd, GFP_KERNEL); + if (err) { + scsi_release_buffers(cmd); goto unmap_rq; + } return 0; diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 24eba3118b5..51a5557f42d 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -519,7 +519,7 @@ static int sd_prep_fn(struct request_queue *q, struct request *rq) SCpnt->cmnd[4] = (unsigned char) this_count; SCpnt->cmnd[5] = 0; } - SCpnt->request_bufflen = this_count * sdp->sector_size; + SCpnt->sdb.length = this_count * sdp->sector_size; /* * We shouldn't disconnect in the middle of a sector, so with a dumb @@ -926,7 +926,7 @@ static struct block_device_operations sd_fops = { static int sd_done(struct scsi_cmnd *SCpnt) { int result = SCpnt->result; - unsigned int xfer_size = SCpnt->request_bufflen; + unsigned int xfer_size = scsi_bufflen(SCpnt); unsigned int good_bytes = result ? 0 : xfer_size; u64 start_lba = SCpnt->request->sector; u64 bad_lba; diff --git a/drivers/scsi/sgiwd93.c b/drivers/scsi/sgiwd93.c index d4ebe8c67ba..26cfc56c709 100644 --- a/drivers/scsi/sgiwd93.c +++ b/drivers/scsi/sgiwd93.c @@ -33,10 +33,9 @@ struct ip22_hostdata { struct WD33C93_hostdata wh; - struct hpc_data { - dma_addr_t dma; - void *cpu; - } hd; + dma_addr_t dma; + void *cpu; + struct device *dev; }; #define host_to_hostdata(host) ((struct ip22_hostdata *)((host)->hostdata)) @@ -46,6 +45,11 @@ struct hpc_chunk { u32 _padding; /* align to quadword boundary */ }; +/* space for hpc dma descriptors */ +#define HPC_DMA_SIZE PAGE_SIZE + +#define DMA_DIR(d) ((d == DATA_OUT_DIR) ? DMA_TO_DEVICE : DMA_FROM_DEVICE) + static irqreturn_t sgiwd93_intr(int irq, void *dev_id) { struct Scsi_Host * host = dev_id; @@ -59,15 +63,17 @@ static irqreturn_t sgiwd93_intr(int irq, void *dev_id) } static inline -void fill_hpc_entries(struct hpc_chunk *hcp, struct scsi_cmnd *cmd, int datainp) +void fill_hpc_entries(struct ip22_hostdata *hd, struct scsi_cmnd *cmd, int din) { unsigned long len = cmd->SCp.this_residual; void *addr = cmd->SCp.ptr; dma_addr_t physaddr; unsigned long count; + struct hpc_chunk *hcp; - physaddr = dma_map_single(NULL, addr, len, cmd->sc_data_direction); + physaddr = dma_map_single(hd->dev, addr, len, DMA_DIR(din)); cmd->SCp.dma_handle = physaddr; + hcp = hd->cpu; while (len) { /* @@ -89,6 +95,9 @@ void fill_hpc_entries(struct hpc_chunk *hcp, struct scsi_cmnd *cmd, int datainp) */ hcp->desc.pbuf = 0; hcp->desc.cntinfo = HPCDMA_EOX; + dma_cache_sync(hd->dev, hd->cpu, + (unsigned long)(hcp + 1) - (unsigned long)hd->cpu, + DMA_TO_DEVICE); } static int dma_setup(struct scsi_cmnd *cmd, int datainp) @@ -96,9 +105,8 @@ static int dma_setup(struct scsi_cmnd *cmd, int datainp) struct ip22_hostdata *hdata = host_to_hostdata(cmd->device->host); struct hpc3_scsiregs *hregs = (struct hpc3_scsiregs *) cmd->device->host->base; - struct hpc_chunk *hcp = (struct hpc_chunk *) hdata->hd.cpu; - pr_debug("dma_setup: datainp<%d> hcp<%p> ", datainp, hcp); + pr_debug("dma_setup: datainp<%d> hcp<%p> ", datainp, hdata->cpu); hdata->wh.dma_dir = datainp; @@ -111,12 +119,12 @@ static int dma_setup(struct scsi_cmnd *cmd, int datainp) if (cmd->SCp.ptr == NULL || cmd->SCp.this_residual == 0) return 1; - fill_hpc_entries(hcp, cmd, datainp); + fill_hpc_entries(hdata, cmd, datainp); pr_debug(" HPCGO\n"); /* Start up the HPC. */ - hregs->ndptr = hdata->hd.dma; + hregs->ndptr = hdata->dma; if (datainp) hregs->ctrl = HPC3_SCTRL_ACTIVE; else @@ -134,6 +142,9 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, if (!SCpnt) return; + if (SCpnt->SCp.ptr == NULL || SCpnt->SCp.this_residual == 0) + return; + hregs = (struct hpc3_scsiregs *) SCpnt->device->host->base; pr_debug("dma_stop: status<%d> ", status); @@ -145,8 +156,9 @@ static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt, barrier(); } hregs->ctrl = 0; - dma_unmap_single(NULL, SCpnt->SCp.dma_handle, SCpnt->SCp.this_residual, - SCpnt->sc_data_direction); + dma_unmap_single(hdata->dev, SCpnt->SCp.dma_handle, + SCpnt->SCp.this_residual, + DMA_DIR(hdata->wh.dma_dir)); pr_debug("\n"); } @@ -161,22 +173,23 @@ void sgiwd93_reset(unsigned long base) } EXPORT_SYMBOL_GPL(sgiwd93_reset); -static inline void init_hpc_chain(struct hpc_data *hd) +static inline void init_hpc_chain(struct ip22_hostdata *hdata) { - struct hpc_chunk *hcp = (struct hpc_chunk *) hd->cpu; - struct hpc_chunk *dma = (struct hpc_chunk *) hd->dma; + struct hpc_chunk *hcp = (struct hpc_chunk *)hdata->cpu; + dma_addr_t dma = hdata->dma; unsigned long start, end; start = (unsigned long) hcp; - end = start + PAGE_SIZE; + end = start + HPC_DMA_SIZE; while (start < end) { - hcp->desc.pnext = (u32) (dma + 1); + hcp->desc.pnext = (u32) (dma + sizeof(struct hpc_chunk)); hcp->desc.cntinfo = HPCDMA_EOX; - hcp++; dma++; + hcp++; + dma += sizeof(struct hpc_chunk); start += sizeof(struct hpc_chunk); }; hcp--; - hcp->desc.pnext = hd->dma; + hcp->desc.pnext = hdata->dma; } static int sgiwd93_bus_reset(struct scsi_cmnd *cmd) @@ -235,16 +248,17 @@ static int __init sgiwd93_probe(struct platform_device *pdev) host->irq = irq; hdata = host_to_hostdata(host); - hdata->hd.cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, - &hdata->hd.dma, GFP_KERNEL); - if (!hdata->hd.cpu) { + hdata->dev = &pdev->dev; + hdata->cpu = dma_alloc_noncoherent(&pdev->dev, HPC_DMA_SIZE, + &hdata->dma, GFP_KERNEL); + if (!hdata->cpu) { printk(KERN_WARNING "sgiwd93: Could not allocate memory for " "host %d buffer.\n", unit); err = -ENOMEM; goto out_put; } - init_hpc_chain(&hdata->hd); + init_hpc_chain(hdata); regs.SASR = wdregs + 3; regs.SCMD = wdregs + 7; @@ -274,7 +288,7 @@ static int __init sgiwd93_probe(struct platform_device *pdev) out_irq: free_irq(irq, host); out_free: - dma_free_coherent(NULL, PAGE_SIZE, hdata->hd.cpu, hdata->hd.dma); + dma_free_noncoherent(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma); out_put: scsi_host_put(host); out: @@ -290,7 +304,7 @@ static void __exit sgiwd93_remove(struct platform_device *pdev) scsi_remove_host(host); free_irq(pd->irq, host); - dma_free_coherent(&pdev->dev, PAGE_SIZE, hdata->hd.cpu, hdata->hd.dma); + dma_free_noncoherent(&pdev->dev, HPC_DMA_SIZE, hdata->cpu, hdata->dma); scsi_host_put(host); } diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 1fcee16fa36..50ba4925020 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -231,7 +231,7 @@ out: static int sr_done(struct scsi_cmnd *SCpnt) { int result = SCpnt->result; - int this_count = SCpnt->request_bufflen; + int this_count = scsi_bufflen(SCpnt); int good_bytes = (result == 0 ? this_count : 0); int block_sectors = 0; long error_sector; @@ -379,17 +379,18 @@ static int sr_prep_fn(struct request_queue *q, struct request *rq) } { - struct scatterlist *sg = SCpnt->request_buffer; - int i, size = 0; - for (i = 0; i < SCpnt->use_sg; i++) - size += sg[i].length; + struct scatterlist *sg; + int i, size = 0, sg_count = scsi_sg_count(SCpnt); - if (size != SCpnt->request_bufflen && SCpnt->use_sg) { + scsi_for_each_sg(SCpnt, sg, sg_count, i) + size += sg->length; + + if (size != scsi_bufflen(SCpnt)) { scmd_printk(KERN_ERR, SCpnt, "mismatch count %d, bytes %d\n", - size, SCpnt->request_bufflen); - if (SCpnt->request_bufflen > size) - SCpnt->request_bufflen = size; + size, scsi_bufflen(SCpnt)); + if (scsi_bufflen(SCpnt) > size) + SCpnt->sdb.length = size; } } @@ -397,12 +398,12 @@ static int sr_prep_fn(struct request_queue *q, struct request *rq) * request doesn't start on hw block boundary, add scatter pads */ if (((unsigned int)rq->sector % (s_size >> 9)) || - (SCpnt->request_bufflen % s_size)) { + (scsi_bufflen(SCpnt) % s_size)) { scmd_printk(KERN_NOTICE, SCpnt, "unaligned transfer\n"); goto out; } - this_count = (SCpnt->request_bufflen >> 9) / (s_size >> 9); + this_count = (scsi_bufflen(SCpnt) >> 9) / (s_size >> 9); SCSI_LOG_HLQUEUE(2, printk("%s : %s %d/%ld 512 byte blocks.\n", @@ -416,7 +417,7 @@ static int sr_prep_fn(struct request_queue *q, struct request *rq) if (this_count > 0xffff) { this_count = 0xffff; - SCpnt->request_bufflen = this_count * s_size; + SCpnt->sdb.length = this_count * s_size; } SCpnt->cmnd[2] = (unsigned char) (block >> 24) & 0xff; diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index e3fab3a6aed..72f6d801535 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -1123,7 +1123,6 @@ static struct scsi_host_template driver_template = { .this_id = -1, .sg_tablesize = ST_MAX_SG, .cmd_per_lun = ST_CMD_PER_LUN, - .use_sg_chaining = ENABLE_SG_CHAINING, }; static int stex_set_dma_mask(struct pci_dev * pdev) diff --git a/drivers/scsi/sym53c416.c b/drivers/scsi/sym53c416.c index 1f6fd168033..6325901e509 100644 --- a/drivers/scsi/sym53c416.c +++ b/drivers/scsi/sym53c416.c @@ -840,6 +840,5 @@ static struct scsi_host_template driver_template = { .cmd_per_lun = 1, .unchecked_isa_dma = 1, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; #include "scsi_module.c" diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c b/drivers/scsi/sym53c8xx_2/sym_glue.c index 21e926dcdab..d39107b7669 100644 --- a/drivers/scsi/sym53c8xx_2/sym_glue.c +++ b/drivers/scsi/sym53c8xx_2/sym_glue.c @@ -207,7 +207,7 @@ void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid) /* * Bounce back the sense data to user. */ - memset(&cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); + memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); memcpy(cmd->sense_buffer, cp->sns_bbuf, min(SCSI_SENSE_BUFFERSIZE, SYM_SNS_BBUF_LEN)); #if 0 @@ -1681,7 +1681,6 @@ static struct scsi_host_template sym2_template = { .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler, .this_id = 7, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, .max_sectors = 0xFFFF, #ifdef SYM_LINUX_PROC_INFO_SUPPORT .proc_info = sym53c8xx_proc_info, diff --git a/drivers/scsi/u14-34f.c b/drivers/scsi/u14-34f.c index 4bc5407f969..662c00451be 100644 --- a/drivers/scsi/u14-34f.c +++ b/drivers/scsi/u14-34f.c @@ -451,7 +451,6 @@ static struct scsi_host_template driver_template = { .this_id = 7, .unchecked_isa_dma = 1, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; #if !defined(__BIG_ENDIAN_BITFIELD) && !defined(__LITTLE_ENDIAN_BITFIELD) diff --git a/drivers/scsi/ultrastor.c b/drivers/scsi/ultrastor.c index 75eca6b22db..f385dce8dfb 100644 --- a/drivers/scsi/ultrastor.c +++ b/drivers/scsi/ultrastor.c @@ -1204,6 +1204,5 @@ static struct scsi_host_template driver_template = { .cmd_per_lun = ULTRASTOR_MAX_CMDS_PER_LUN, .unchecked_isa_dma = 1, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; #include "scsi_module.c" diff --git a/drivers/scsi/wd7000.c b/drivers/scsi/wd7000.c index b4304ae7852..c975c01b3a0 100644 --- a/drivers/scsi/wd7000.c +++ b/drivers/scsi/wd7000.c @@ -1671,7 +1671,6 @@ static struct scsi_host_template driver_template = { .cmd_per_lun = 1, .unchecked_isa_dma = 1, .use_clustering = ENABLE_CLUSTERING, - .use_sg_chaining = ENABLE_SG_CHAINING, }; #include "scsi_module.c" diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c index 178e8c2a8a2..0db488624ab 100644 --- a/drivers/usb/storage/isd200.c +++ b/drivers/usb/storage/isd200.c @@ -415,14 +415,14 @@ static void isd200_set_srb(struct isd200_info *info, sg_init_one(&info->sg, buff, bufflen); srb->sc_data_direction = dir; - srb->request_buffer = buff ? &info->sg : NULL; - srb->request_bufflen = bufflen; - srb->use_sg = buff ? 1 : 0; + srb->sdb.table.sgl = buff ? &info->sg : NULL; + srb->sdb.length = bufflen; + srb->sdb.table.nents = buff ? 1 : 0; } static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen) { - srb->request_bufflen = bufflen; + srb->sdb.length = bufflen; } diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index 702fcfeb37f..82251575a9b 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -11,6 +11,25 @@ #include <linux/types.h> /* + * The maximum number of SG segments that we will put inside a + * scatterlist (unless chaining is used). Should ideally fit inside a + * single page, to avoid a higher order allocation. We could define this + * to SG_MAX_SINGLE_ALLOC to pack correctly at the highest order. The + * minimum value is 32 + */ +#define SCSI_MAX_SG_SEGMENTS 128 + +/* + * Like SCSI_MAX_SG_SEGMENTS, but for archs that have sg chaining. This limit + * is totally arbitrary, a setting of 2048 will get you at least 8mb ios. + */ +#ifdef ARCH_HAS_SG_CHAIN +#define SCSI_MAX_SG_CHAIN_SEGMENTS 2048 +#else +#define SCSI_MAX_SG_CHAIN_SEGMENTS SCSI_MAX_SG_SEGMENTS +#endif + +/* * SCSI command lengths */ @@ -83,6 +102,7 @@ extern const unsigned char scsi_command_size[8]; #define READ_TOC 0x43 #define LOG_SELECT 0x4c #define LOG_SENSE 0x4d +#define XDWRITEREAD_10 0x53 #define MODE_SELECT_10 0x55 #define RESERVE_10 0x56 #define RELEASE_10 0x57 diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index a457fca66f6..de28aab820b 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -2,15 +2,20 @@ #define _SCSI_SCSI_CMND_H #include <linux/dma-mapping.h> +#include <linux/blkdev.h> #include <linux/list.h> #include <linux/types.h> #include <linux/timer.h> #include <linux/scatterlist.h> -struct request; struct Scsi_Host; struct scsi_device; +struct scsi_data_buffer { + struct sg_table table; + unsigned length; + int resid; +}; /* embedded in scsi_cmnd */ struct scsi_pointer { @@ -61,15 +66,11 @@ struct scsi_cmnd { /* These elements define the operation we are about to perform */ #define MAX_COMMAND_SIZE 16 unsigned char cmnd[MAX_COMMAND_SIZE]; - unsigned request_bufflen; /* Actual request size */ struct timer_list eh_timeout; /* Used to time out the command. */ - void *request_buffer; /* Actual requested buffer */ /* These elements define the operation we ultimately want to perform */ - struct sg_table sg_table; - unsigned short use_sg; /* Number of pieces of scatter-gather */ - + struct scsi_data_buffer sdb; unsigned underflow; /* Return error if less than this amount is transferred */ @@ -79,10 +80,6 @@ struct scsi_cmnd { reconnects. Probably == sector size */ - int resid; /* Number of bytes requested to be - transferred less actual number - transferred (0 if not supported) */ - struct request *request; /* The command we are working on */ @@ -127,27 +124,55 @@ extern void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count, size_t *offset, size_t *len); extern void scsi_kunmap_atomic_sg(void *virt); -extern int scsi_alloc_sgtable(struct scsi_cmnd *, gfp_t); -extern void scsi_free_sgtable(struct scsi_cmnd *); +extern int scsi_init_io(struct scsi_cmnd *cmd, gfp_t gfp_mask); +extern void scsi_release_buffers(struct scsi_cmnd *cmd); extern int scsi_dma_map(struct scsi_cmnd *cmd); extern void scsi_dma_unmap(struct scsi_cmnd *cmd); -#define scsi_sg_count(cmd) ((cmd)->use_sg) -#define scsi_sglist(cmd) ((cmd)->sg_table.sgl) -#define scsi_bufflen(cmd) ((cmd)->request_bufflen) +static inline unsigned scsi_sg_count(struct scsi_cmnd *cmd) +{ + return cmd->sdb.table.nents; +} + +static inline struct scatterlist *scsi_sglist(struct scsi_cmnd *cmd) +{ + return cmd->sdb.table.sgl; +} + +static inline unsigned scsi_bufflen(struct scsi_cmnd *cmd) +{ + return cmd->sdb.length; +} static inline void scsi_set_resid(struct scsi_cmnd *cmd, int resid) { - cmd->resid = resid; + cmd->sdb.resid = resid; } static inline int scsi_get_resid(struct scsi_cmnd *cmd) { - return cmd->resid; + return cmd->sdb.resid; } #define scsi_for_each_sg(cmd, sg, nseg, __i) \ for_each_sg(scsi_sglist(cmd), sg, nseg, __i) +static inline int scsi_bidi_cmnd(struct scsi_cmnd *cmd) +{ + return blk_bidi_rq(cmd->request) && + (cmd->request->next_rq->special != NULL); +} + +static inline struct scsi_data_buffer *scsi_in(struct scsi_cmnd *cmd) +{ + return scsi_bidi_cmnd(cmd) ? + cmd->request->next_rq->special : &cmd->sdb; +} + +static inline struct scsi_data_buffer *scsi_out(struct scsi_cmnd *cmd) +{ + return &cmd->sdb; +} + #endif /* _SCSI_SCSI_CMND_H */ diff --git a/include/scsi/scsi_eh.h b/include/scsi/scsi_eh.h index d21b8913ceb..25071d5d9bf 100644 --- a/include/scsi/scsi_eh.h +++ b/include/scsi/scsi_eh.h @@ -68,16 +68,15 @@ extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len, extern int scsi_reset_provider(struct scsi_device *, int); struct scsi_eh_save { + /* saved state */ int result; enum dma_data_direction data_direction; unsigned char cmd_len; unsigned char cmnd[MAX_COMMAND_SIZE]; + struct scsi_data_buffer sdb; + struct request *next_rq; - void *buffer; - unsigned bufflen; - unsigned short use_sg; - int resid; - + /* new command support */ struct scatterlist sense_sgl; }; diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 0fd4746ee39..5c58d594126 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -39,9 +39,6 @@ struct blk_queue_tags; #define DISABLE_CLUSTERING 0 #define ENABLE_CLUSTERING 1 -#define DISABLE_SG_CHAINING 0 -#define ENABLE_SG_CHAINING 1 - enum scsi_eh_timer_return { EH_NOT_HANDLED, EH_HANDLED, @@ -136,9 +133,9 @@ struct scsi_host_template { * the done callback is invoked. * * This is called to inform the LLD to transfer - * cmd->request_bufflen bytes. The cmd->use_sg speciefies the + * scsi_bufflen(cmd) bytes. scsi_sg_count(cmd) speciefies the * number of scatterlist entried in the command and - * cmd->request_buffer contains the scatterlist. + * scsi_sglist(cmd) returns the scatterlist. * * return values: see queuecommand * @@ -446,15 +443,6 @@ struct scsi_host_template { unsigned ordered_tag:1; /* - * true if the low-level driver can support sg chaining. this - * will be removed eventually when all the drivers are - * converted to support sg chaining. - * - * Status: OBSOLETE - */ - unsigned use_sg_chaining:1; - - /* * Countdown for host blocking with no commands outstanding */ unsigned int max_host_blocked; @@ -598,7 +586,6 @@ struct Scsi_Host { unsigned unchecked_isa_dma:1; unsigned use_clustering:1; unsigned use_blk_tcq:1; - unsigned use_sg_chaining:1; /* * Host has requested that no further requests come through for the |