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path: root/drivers/scsi/mpt2sas/mpt2sas_scsih.c
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Diffstat (limited to 'drivers/scsi/mpt2sas/mpt2sas_scsih.c')
-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_scsih.c59
1 files changed, 40 insertions, 19 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
index 1ccae45c5270..af4e6c451b1b 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
@@ -2,7 +2,7 @@
* Scsi Host Layer for MPT (Message Passing Technology) based controllers
*
* This code is based on drivers/scsi/mpt2sas/mpt2_scsih.c
- * Copyright (C) 2007-2010 LSI Corporation
+ * Copyright (C) 2007-2012 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
* This program is free software; you can redistribute it and/or
@@ -119,6 +119,15 @@ module_param(diag_buffer_enable, int, 0);
MODULE_PARM_DESC(diag_buffer_enable, " post diag buffers "
"(TRACE=1/SNAPSHOT=2/EXTENDED=4/default=0)");
+static int disable_discovery = -1;
+module_param(disable_discovery, int, 0);
+MODULE_PARM_DESC(disable_discovery, " disable discovery ");
+
+/* permit overriding the host protection capabilities mask (EEDP/T10 PI) */
+static int prot_mask = 0;
+module_param(prot_mask, int, 0);
+MODULE_PARM_DESC(prot_mask, " host protection capabilities mask, def=7 ");
+
/**
* struct sense_info - common structure for obtaining sense keys
* @skey: sense key
@@ -3768,8 +3777,6 @@ static void
_scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status)
{
u8 ascq;
- u8 sk;
- u8 host_byte;
switch (ioc_status) {
case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
@@ -3786,16 +3793,8 @@ _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status)
break;
}
- if (scmd->sc_data_direction == DMA_TO_DEVICE) {
- sk = ILLEGAL_REQUEST;
- host_byte = DID_ABORT;
- } else {
- sk = ABORTED_COMMAND;
- host_byte = DID_OK;
- }
-
- scsi_build_sense_buffer(0, scmd->sense_buffer, sk, 0x10, ascq);
- scmd->result = DRIVER_SENSE << 24 | (host_byte << 16) |
+ scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 0x10, ascq);
+ scmd->result = DRIVER_SENSE << 24 | (DID_ABORT << 16) |
SAM_STAT_CHECK_CONDITION;
}
@@ -5973,8 +5972,14 @@ _scsih_sas_discovery_event(struct MPT2SAS_ADAPTER *ioc,
#endif
if (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED &&
- !ioc->sas_hba.num_phys)
+ !ioc->sas_hba.num_phys) {
+ if (disable_discovery > 0 && ioc->shost_recovery) {
+ /* Wait for the reset to complete */
+ while (ioc->shost_recovery)
+ ssleep(1);
+ }
_scsih_sas_host_add(ioc);
+ }
}
/**
@@ -7254,7 +7259,8 @@ mpt2sas_scsih_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
_scsih_search_responding_sas_devices(ioc);
_scsih_search_responding_raid_devices(ioc);
_scsih_search_responding_expanders(ioc);
- if (!ioc->is_driver_loading) {
+ if ((!ioc->is_driver_loading) && !(disable_discovery > 0 &&
+ !ioc->sas_hba.num_phys)) {
_scsih_prep_device_scan(ioc);
_scsih_search_responding_sas_devices(ioc);
_scsih_search_responding_raid_devices(ioc);
@@ -7929,6 +7935,9 @@ _scsih_scan_start(struct Scsi_Host *shost)
if (diag_buffer_enable != -1 && diag_buffer_enable != 0)
mpt2sas_enable_diag_buffer(ioc, diag_buffer_enable);
+ if (disable_discovery > 0)
+ return;
+
ioc->start_scan = 1;
rc = mpt2sas_port_enable(ioc);
@@ -7950,6 +7959,12 @@ _scsih_scan_finished(struct Scsi_Host *shost, unsigned long time)
{
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
+ if (disable_discovery > 0) {
+ ioc->is_driver_loading = 0;
+ ioc->wait_for_discovery_to_complete = 0;
+ return 1;
+ }
+
if (time >= (300 * HZ)) {
ioc->base_cmds.status = MPT2_CMD_NOT_USED;
printk(MPT2SAS_INFO_FMT "port enable: FAILED with timeout "
@@ -8055,8 +8070,8 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (max_sectors != 0xFFFF) {
if (max_sectors < 64) {
shost->max_sectors = 64;
- printk(MPT2SAS_WARN_FMT "Invalid value %d passed "
- "for max_sectors, range is 64 to 8192. Assigning "
+ printk(MPT2SAS_WARN_FMT "Invalid value %d passed "\
+ "for max_sectors, range is 64 to 32767. Assigning "\
"value of 64.\n", ioc->name, max_sectors);
} else if (max_sectors > 32767) {
shost->max_sectors = 32767;
@@ -8078,8 +8093,14 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto out_add_shost_fail;
}
- scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION
- | SHOST_DIF_TYPE2_PROTECTION | SHOST_DIF_TYPE3_PROTECTION);
+ /* register EEDP capabilities with SCSI layer */
+ if (prot_mask)
+ scsi_host_set_prot(shost, prot_mask);
+ else
+ scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION
+ | SHOST_DIF_TYPE2_PROTECTION
+ | SHOST_DIF_TYPE3_PROTECTION);
+
scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
/* event thread */