Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] megaraid_sas: intercept cmd timeout and throttle io
  [SCSI] fusion: Fix |/|| confusion
  [SCSI] aic94xx: asd_clear_nexus should fail if the cleared task does not complete
  [SCSI] aic7xxx: fix aicasm build failure with gcc-3.4.6
  [SCSI] aacraid: apply commit config for reset_devices flag
  [SCSI] sd: fix refcounting regression in suspend/resume routines
  [SCSI] aacraid: fix panic on short Inquiry
  [SCSI] aacraid: Correct sa platform support. (Was: [Bug 8469] Bad EIP value on pentium3 SMP kernel-2.6.21.1)
  [SCSI] NCR53C9x: correct spelling mistake in deprecation notice
  [SCSI] tgt: fix a rdma indirect transfer error bug
  [SCSI] MegaRAID: Update MAINTAINERS email-id
  [SCSI] stex: minor cleanup and version update
  [SCSI] stex: fix reset recovery for console device
  [SCSI] stex: extend hard reset wait time
  [SCSI] stex: fix id mapping issue
  [SCSI] ipr: Proper return codes for eh_dev_reset for SATA devices
  [SCSI] zfcp: IO stall after deleting and path checker changes after reenabling zfcp devices
  [SCSI] zfcp: avoid clutter in erp_dbf

22 files changed, 206 insertions, 106 deletions

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 5c8695a3d13..2d7ea85075b 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -62,7 +62,7 @@ Who:	Dan Dennedy <dan@dennedy.org>, Stefan Richter <stefanr@s5r6.in-berlin.de>
 What:	old NCR53C9x driver
 When:	October 2007
 Why:	Replaced by the much better esp_scsi driver.  Actual low-level
-	driver can ported over almost trivially.
+	driver can be ported over almost trivially.
 Who:	David Miller <davem@davemloft.net>
 	Christoph Hellwig <hch@lst.de>
 
diff --git a/MAINTAINERS b/MAINTAINERS
index 953291d08c7..4cc17b993b6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2334,7 +2334,7 @@ S:	Maintained
 
 MEGARAID SCSI DRIVERS
 P:	Neela Syam Kolli
-M:	Neela.Kolli@engenio.com
+M:	megaraidlinux@lsi.com
 S:	linux-scsi@vger.kernel.org
 W:	http://megaraid.lsilogic.com
 S:	Maintained
diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index d25d3be8fcd..165f81d16d0 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -436,7 +436,7 @@ typedef struct _MPT_SAS_MGMT {
 typedef struct _mpt_ioctl_events {
 	u32	event;		/* Specified by define above */
 	u32	eventContext;	/* Index or counter */
-	int	data[2];	/* First 8 bytes of Event Data */
+	u32	data[2];	/* First 8 bytes of Event Data */
 } MPT_IOCTL_EVENTS;
 
 /*
diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c
index fa0f7761652..3bd94f11e7d 100644
--- a/drivers/message/fusion/mptscsih.c
+++ b/drivers/message/fusion/mptscsih.c
@@ -2463,11 +2463,11 @@ mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR
 				ioc->events[idx].event = MPI_EVENT_SCSI_DEVICE_STATUS_CHANGE;
 				ioc->events[idx].eventContext = ioc->eventContext;
 
-				ioc->events[idx].data[0] = (pReq->LUN[1] << 24) ||
-					(MPI_EVENT_SCSI_DEV_STAT_RC_SMART_DATA << 16) ||
-					(sc->device->channel << 8) || sc->device->id;
+				ioc->events[idx].data[0] = (pReq->LUN[1] << 24) |
+					(MPI_EVENT_SCSI_DEV_STAT_RC_SMART_DATA << 16) |
+					(sc->device->channel << 8) | sc->device->id;
 
-				ioc->events[idx].data[1] = (sense_data[13] << 8) || sense_data[12];
+				ioc->events[idx].data[1] = (sense_data[13] << 8) | sense_data[12];
 
 				ioc->eventContext++;
 				if (hd->ioc->pcidev->vendor ==
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index ddff40c4212..821cde65e36 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -1127,6 +1127,7 @@ zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
 	int retval = 0;
 	unsigned long flags;
 
+	zfcp_adapter_scsi_unregister(adapter);
 	device_unregister(&adapter->generic_services);
 	zfcp_sysfs_adapter_remove_files(&adapter->ccw_device->dev);
 	dev_set_drvdata(&adapter->ccw_device->dev, NULL);
diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index 81680efa172..1c8f71a5985 100644
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -189,9 +189,7 @@ zfcp_ccw_set_online(struct ccw_device *ccw_device)
  * @ccw_device: pointer to belonging ccw device
  *
  * This function gets called by the common i/o layer and sets an adapter
- * into state offline. Setting an fcp device offline means that it will be
- * unregistered from the SCSI stack and that the adapter will be shut down
- * asynchronously.
+ * into state offline.
  */
 static int
 zfcp_ccw_set_offline(struct ccw_device *ccw_device)
@@ -202,7 +200,6 @@ zfcp_ccw_set_offline(struct ccw_device *ccw_device)
 	adapter = dev_get_drvdata(&ccw_device->dev);
 	zfcp_erp_adapter_shutdown(adapter, 0);
 	zfcp_erp_wait(adapter);
-	zfcp_adapter_scsi_unregister(adapter);
 	zfcp_erp_thread_kill(adapter);
 	zfcp_adapter_debug_unregister(adapter);
 	up(&zfcp_data.config_sema);
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index a8b02542ac2..0eb31e162b1 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -156,44 +156,30 @@ zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req)
 	kfree(fsf_req);
 }
 
-/**
- * zfcp_fsf_req_dismiss - dismiss a single fsf request
- */
-static void zfcp_fsf_req_dismiss(struct zfcp_adapter *adapter,
-				 struct zfcp_fsf_req *fsf_req,
-				 unsigned int counter)
-{
-	u64 dbg_tmp[2];
-
-	dbg_tmp[0] = (u64) atomic_read(&adapter->reqs_active);
-	dbg_tmp[1] = (u64) counter;
-	debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16);
-	list_del(&fsf_req->list);
-	fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
-	zfcp_fsf_req_complete(fsf_req);
-}
-
-/**
- * zfcp_fsf_req_dismiss_all - dismiss all remaining fsf requests
+/*
+ * Never ever call this without shutting down the adapter first.
+ * Otherwise the adapter would continue using and corrupting s390 storage.
+ * Included BUG_ON() call to ensure this is done.
+ * ERP is supposed to be the only user of this function.
  */
 void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
 {
-	struct zfcp_fsf_req *request, *tmp;
+	struct zfcp_fsf_req *fsf_req, *tmp;
 	unsigned long flags;
 	LIST_HEAD(remove_queue);
-	unsigned int i, counter;
+	unsigned int i;
 
+	BUG_ON(atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status));
 	spin_lock_irqsave(&adapter->req_list_lock, flags);
 	atomic_set(&adapter->reqs_active, 0);
-	for (i=0; i<REQUEST_LIST_SIZE; i++)
+	for (i = 0; i < REQUEST_LIST_SIZE; i++)
 		list_splice_init(&adapter->req_list[i], &remove_queue);
-
 	spin_unlock_irqrestore(&adapter->req_list_lock, flags);
 
-	counter = 0;
-	list_for_each_entry_safe(request, tmp, &remove_queue, list) {
-		zfcp_fsf_req_dismiss(adapter, request, counter);
-		counter++;
+	list_for_each_entry_safe(fsf_req, tmp, &remove_queue, list) {
+		list_del(&fsf_req->list);
+		fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
+		zfcp_fsf_req_complete(fsf_req);
 	}
 }
 
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 16e2d64658a..0acf6db0a08 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -569,6 +569,9 @@ zfcp_adapter_scsi_register(struct zfcp_adapter *adapter)
 	int retval = 0;
 	static unsigned int unique_id = 0;
 
+	if (adapter->scsi_host)
+		goto out;
+
 	/* register adapter as SCSI host with mid layer of SCSI stack */
 	adapter->scsi_host = scsi_host_alloc(&zfcp_data.scsi_host_template,
 					     sizeof (struct zfcp_adapter *));
diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index 1e82c69b36b..8dcfe4ec35c 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -146,7 +146,7 @@ static char *aac_get_status_string(u32 status);
 static int nondasd = -1;
 static int dacmode = -1;
 
-static int commit = -1;
+int aac_commit = -1;
 int startup_timeout = 180;
 int aif_timeout = 120;
 
@@ -154,7 +154,7 @@ module_param(nondasd, int, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(nondasd, "Control scanning of hba for nondasd devices. 0=off, 1=on");
 module_param(dacmode, int, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(dacmode, "Control whether dma addressing is using 64 bit DAC. 0=off, 1=on");
-module_param(commit, int, S_IRUGO|S_IWUSR);
+module_param_named(commit, aac_commit, int, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(commit, "Control whether a COMMIT_CONFIG is issued to the adapter for foreign arrays.\nThis is typically needed in systems that do not have a BIOS. 0=off, 1=on");
 module_param(startup_timeout, int, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(startup_timeout, "The duration of time in seconds to wait for adapter to have it's kernel up and\nrunning. This is typically adjusted for large systems that do not have a BIOS.");
@@ -173,6 +173,9 @@ int expose_physicals = -1;
 module_param(expose_physicals, int, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(expose_physicals, "Expose physical components of the arrays. -1=protect 0=off, 1=on");
 
+int aac_reset_devices = 0;
+module_param_named(reset_devices, aac_reset_devices, int, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(reset_devices, "Force an adapter reset at initialization.");
 
 static inline int aac_valid_context(struct scsi_cmnd *scsicmd,
 		struct fib *fibptr) {
@@ -246,7 +249,7 @@ int aac_get_config_status(struct aac_dev *dev, int commit_flag)
 	aac_fib_complete(fibptr);
 	/* Send a CT_COMMIT_CONFIG to enable discovery of devices */
 	if (status >= 0) {
-		if ((commit == 1) || commit_flag) {
+		if ((aac_commit == 1) || commit_flag) {
 			struct aac_commit_config * dinfo;
 			aac_fib_init(fibptr);
 			dinfo = (struct aac_commit_config *) fib_data(fibptr);
@@ -261,7 +264,7 @@ int aac_get_config_status(struct aac_dev *dev, int commit_flag)
 				    1, 1,
 				    NULL, NULL);
 			aac_fib_complete(fibptr);
-		} else if (commit == 0) {
+		} else if (aac_commit == 0) {
 			printk(KERN_WARNING
 			  "aac_get_config_status: Foreign device configurations are being ignored\n");
 		}
@@ -340,7 +343,7 @@ int aac_get_containers(struct aac_dev *dev)
 static void aac_internal_transfer(struct scsi_cmnd *scsicmd, void *data, unsigned int offset, unsigned int len)
 {
 	void *buf;
-	unsigned int transfer_len;
+	int transfer_len;
 	struct scatterlist *sg = scsicmd->request_buffer;
 
 	if (scsicmd->use_sg) {
@@ -351,7 +354,7 @@ static void aac_internal_transfer(struct scsi_cmnd *scsicmd, void *data, unsigne
 		transfer_len = min(scsicmd->request_bufflen, len + offset);
 	}
 	transfer_len -= offset;
-	if (buf && transfer_len)
+	if (buf && transfer_len > 0)
 		memcpy(buf + offset, data, transfer_len);
 
 	if (scsicmd->use_sg) 
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 45ca3e80161..c81edf36913 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -1823,9 +1823,12 @@ int aac_send_shutdown(struct aac_dev *dev);
 int aac_probe_container(struct aac_dev *dev, int cid);
 int _aac_rx_init(struct aac_dev *dev);
 int aac_rx_select_comm(struct aac_dev *dev, int comm);
+int aac_rx_deliver_producer(struct fib * fib);
 extern int numacb;
 extern int acbsize;
 extern char aac_driver_version[];
 extern int startup_timeout;
 extern int aif_timeout;
 extern int expose_physicals;
+extern int aac_reset_devices;
+extern int aac_commit;
diff --git a/drivers/scsi/aacraid/rx.c b/drivers/scsi/aacraid/rx.c
index 291cd14f4e9..ae978a373c5 100644
--- a/drivers/scsi/aacraid/rx.c
+++ b/drivers/scsi/aacraid/rx.c
@@ -378,7 +378,7 @@ static int aac_rx_check_health(struct aac_dev *dev)
  *
  *	Will send a fib, returning 0 if successful.
  */
-static int aac_rx_deliver_producer(struct fib * fib)
+int aac_rx_deliver_producer(struct fib * fib)
 {
 	struct aac_dev *dev = fib->dev;
 	struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
@@ -488,6 +488,8 @@ static int aac_rx_restart_adapter(struct aac_dev *dev, int bled)
 		return -EINVAL;
 	if (rx_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC)
 		return -ENODEV;
+	if (startup_timeout < 300)
+		startup_timeout = 300;
 	return 0;
 }
 
@@ -542,7 +544,7 @@ int _aac_rx_init(struct aac_dev *dev)
 	dev->a_ops.adapter_sync_cmd = rx_sync_cmd;
 	dev->a_ops.adapter_enable_int = aac_rx_disable_interrupt;
 	dev->OIMR = status = rx_readb (dev, MUnit.OIMR);
-	if ((((status & 0x0c) != 0x0c) || reset_devices) &&
+	if ((((status & 0x0c) != 0x0c) || aac_reset_devices || reset_devices) &&
 	  !aac_rx_restart_adapter(dev, 0))
 		++restart;
 	/*
@@ -594,6 +596,8 @@ int _aac_rx_init(struct aac_dev *dev)
 		}
 		msleep(1);
 	}
+	if (restart)
+		aac_commit = 1;
 	/*
 	 *	Fill in the common function dispatch table.
 	 */
diff --git a/drivers/scsi/aacraid/sa.c b/drivers/scsi/aacraid/sa.c
index f4b5e9742ab..85b91bc578c 100644
--- a/drivers/scsi/aacraid/sa.c
+++ b/drivers/scsi/aacraid/sa.c
@@ -5,7 +5,7 @@
  * based on the old aacraid driver that is..
  * Adaptec aacraid device driver for Linux.
  *
- * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
+ * Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com)
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -257,6 +257,11 @@ static void aac_sa_start_adapter(struct aac_dev *dev)
 			NULL, NULL, NULL, NULL, NULL);
 }
 
+static int aac_sa_restart_adapter(struct aac_dev *dev, int bled)
+{
+	return -EINVAL;
+}
+
 /**
  *	aac_sa_check_health
  *	@dev: device to check if healthy
@@ -366,7 +371,9 @@ int aac_sa_init(struct aac_dev *dev)
 	dev->a_ops.adapter_notify = aac_sa_notify_adapter;
 	dev->a_ops.adapter_sync_cmd = sa_sync_cmd;
 	dev->a_ops.adapter_check_health = aac_sa_check_health;
+	dev->a_ops.adapter_restart = aac_sa_restart_adapter;
 	dev->a_ops.adapter_intr = aac_sa_intr;
+	dev->a_ops.adapter_deliver = aac_rx_deliver_producer;
 	dev->a_ops.adapter_ioremap = aac_sa_ioremap;
 
 	/*
diff --git a/drivers/scsi/aic7xxx/aicasm/aicasm_gram.y b/drivers/scsi/aic7xxx/aicasm/aicasm_gram.y
index c328596def3..6066998ed56 100644
--- a/drivers/scsi/aic7xxx/aicasm/aicasm_gram.y
+++ b/drivers/scsi/aic7xxx/aicasm/aicasm_gram.y
@@ -106,6 +106,7 @@ static void make_expression(expression_t *immed, int value);
 static void add_conditional(symbol_t *symbol);
 static void add_version(const char *verstring);
 static int  is_download_const(expression_t *immed);
+void yyerror(const char *string);
 
 #define SRAM_SYMNAME "SRAM_BASE"
 #define SCB_SYMNAME "SCB_BASE"
diff --git a/drivers/scsi/aic7xxx/aicasm/aicasm_macro_gram.y b/drivers/scsi/aic7xxx/aicasm/aicasm_macro_gram.y
index 439f760b34b..ff46aa6801b 100644
--- a/drivers/scsi/aic7xxx/aicasm/aicasm_macro_gram.y
+++ b/drivers/scsi/aic7xxx/aicasm/aicasm_macro_gram.y
@@ -65,6 +65,7 @@
 static symbol_t *macro_symbol;
 
 static void add_macro_arg(const char *argtext, int position);
+void mmerror(const char *string);
 
 %}
 
diff --git a/drivers/scsi/aic94xx/aic94xx_tmf.c b/drivers/scsi/aic94xx/aic94xx_tmf.c
index 9a14a6d9727..c0d0b7d7a8c 100644
--- a/drivers/scsi/aic94xx/aic94xx_tmf.c
+++ b/drivers/scsi/aic94xx/aic94xx_tmf.c
@@ -290,6 +290,7 @@ static void asd_tmf_tasklet_complete(struct asd_ascb *ascb,
 static inline int asd_clear_nexus(struct sas_task *task)
 {
 	int res = TMF_RESP_FUNC_FAILED;
+	int leftover;
 	struct asd_ascb *tascb = task->lldd_task;
 	unsigned long flags;
 
@@ -298,10 +299,12 @@ static inline int asd_clear_nexus(struct sas_task *task)
 		res = asd_clear_nexus_tag(task);
 	else
 		res = asd_clear_nexus_index(task);
-	wait_for_completion_timeout(&tascb->completion,
-				    AIC94XX_SCB_TIMEOUT);
+	leftover = wait_for_completion_timeout(&tascb->completion,
+					       AIC94XX_SCB_TIMEOUT);
 	ASD_DPRINTK("came back from clear nexus\n");
 	spin_lock_irqsave(&task->task_state_lock, flags);
+	if (leftover < 1)
+		res = TMF_RESP_FUNC_FAILED;
 	if (task->task_state_flags & SAS_TASK_STATE_DONE)
 		res = TMF_RESP_FUNC_COMPLETE;
 	spin_unlock_irqrestore(&task->task_state_lock, flags);
@@ -350,6 +353,7 @@ int asd_abort_task(struct sas_task *task)
 	unsigned long flags;
 	struct asd_ascb *ascb = NULL;
 	struct scb *scb;
+	int leftover;
 
 	spin_lock_irqsave(&task->task_state_lock, flags);
 	if (task->task_state_flags & SAS_TASK_STATE_DONE) {
@@ -455,9 +459,11 @@ int asd_abort_task(struct sas_task *task)
 		break;
 	case TF_TMF_TASK_DONE + 0xFF00:	/* done but not reported yet */
 		res = TMF_RESP_FUNC_FAILED;
-		wait_for_completion_timeout(&tascb->completion,
-					    AIC94XX_SCB_TIMEOUT);
+		leftover = wait_for_completion_timeout(&tascb->completion,
+						       AIC94XX_SCB_TIMEOUT);
 		spin_lock_irqsave(&task->task_state_lock, flags);
+		if (leftover < 1)
+			res = TMF_RESP_FUNC_FAILED;
 		if (task->task_state_flags & SAS_TASK_STATE_DONE)
 			res = TMF_RESP_FUNC_COMPLETE;
 		spin_unlock_irqrestore(&task->task_state_lock, flags);
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index 4baa79e6867..fa6ff295e56 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -3954,6 +3954,13 @@ static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
 		spin_unlock_irq(scsi_cmd->device->host->host_lock);
 		ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
 		spin_lock_irq(scsi_cmd->device->host->host_lock);
+
+		list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
+			if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
+				rc = -EIO;
+				break;
+			}
+		}
 	} else
 		rc = ipr_device_reset(ioa_cfg, res);
 	res->resetting_device = 0;
diff --git a/drivers/scsi/libsrp.c b/drivers/scsi/libsrp.c
index 5631c199a8e..732446e6396 100644
--- a/drivers/scsi/libsrp.c
+++ b/drivers/scsi/libsrp.c
@@ -254,6 +254,7 @@ static int srp_indirect_data(struct scsi_cmnd *sc, struct srp_cmd *cmd,
 
 		sg_init_one(&dummy, md, id->table_desc.len);
 		sg_dma_address(&dummy) = token;
+		sg_dma_len(&dummy) = id->table_desc.len;
 		err = rdma_io(sc, &dummy, 1, &id->table_desc, 1, DMA_TO_DEVICE,
 			      id->table_desc.len);
 		if (err) {
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index 7a812677ff8..e2cf12ef368 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -10,7 +10,7 @@
  *	   2 of the License, or (at your option) any later version.
  *
  * FILE		: megaraid_sas.c
- * Version	: v00.00.03.10-rc1
+ * Version	: v00.00.03.10-rc5
  *
  * Authors:
  *	(email-id : megaraidlinux@lsi.com)
@@ -886,6 +886,7 @@ megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
 		goto out_return_cmd;
 
 	cmd->scmd = scmd;
+	scmd->SCp.ptr = (char *)cmd;
 
 	/*
 	 * Issue the command to the FW
@@ -919,7 +920,7 @@ static int megasas_slave_configure(struct scsi_device *sdev)
 	 * The RAID firmware may require extended timeouts.
 	 */
 	if (sdev->channel >= MEGASAS_MAX_PD_CHANNELS)
-		sdev->timeout = 90 * HZ;
+		sdev->timeout = MEGASAS_DEFAULT_CMD_TIMEOUT * HZ;
 	return 0;
 }
 
@@ -981,8 +982,8 @@ static int megasas_generic_reset(struct scsi_cmnd *scmd)
 
 	instance = (struct megasas_instance *)scmd->device->host->hostdata;
 
-	scmd_printk(KERN_NOTICE, scmd, "megasas: RESET -%ld cmd=%x\n",
-	       scmd->serial_number, scmd->cmnd[0]);
+	scmd_printk(KERN_NOTICE, scmd, "megasas: RESET -%ld cmd=%x retries=%x\n",
+		 scmd->serial_number, scmd->cmnd[0], scmd->retries);
 
 	if (instance->hw_crit_error) {
 		printk(KERN_ERR "megasas: cannot recover from previous reset "
@@ -1000,6 +1001,39 @@ static int megasas_generic_reset(struct scsi_cmnd *scmd)
 }
 
 /**
+ * megasas_reset_timer - quiesce the adapter if required
+ * @scmd:		scsi cmnd
+ *
+ * Sets the FW busy flag and reduces the host->can_queue if the
+ * cmd has not been completed within the timeout period.
+ */
+static enum
+scsi_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
+{
+	struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr;
+	struct megasas_instance *instance;
+	unsigned long flags;
+
+	if (time_after(jiffies, scmd->jiffies_at_alloc +
+				(MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
+		return EH_NOT_HANDLED;
+	}
+
+	instance = cmd->instance;
+	if (!(instance->flag & MEGASAS_FW_BUSY)) {
+		/* FW is busy, throttle IO */
+		spin_lock_irqsave(instance->host->host_lock, flags);
+
+		instance->host->can_queue = 16;
+		instance->last_time = jiffies;
+		instance->flag |= MEGASAS_FW_BUSY;
+
+		spin_unlock_irqrestore(instance->host->host_lock, flags);
+	}
+	return EH_RESET_TIMER;
+}
+
+/**
  * megasas_reset_device -	Device reset handler entry point
  */
 static int megasas_reset_device(struct scsi_cmnd *scmd)
@@ -1112,6 +1146,7 @@ static struct scsi_host_template megasas_template = {
 	.eh_device_reset_handler = megasas_reset_device,
 	.eh_bus_reset_handler = megasas_reset_bus_host,
 	.eh_host_reset_handler = megasas_reset_bus_host,
+	.eh_timed_out = megasas_reset_timer,
 	.bios_param = megasas_bios_param,
 	.use_clustering = ENABLE_CLUSTERING,
 };
@@ -1215,9 +1250,8 @@ megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
 	int exception = 0;
 	struct megasas_header *hdr = &cmd->frame->hdr;
 
-	if (cmd->scmd) {
-		cmd->scmd->SCp.ptr = (char *)0;
-	}
+	if (cmd->scmd)
+		cmd->scmd->SCp.ptr = NULL;
 
 	switch (hdr->cmd) {
 
@@ -1806,6 +1840,7 @@ static void megasas_complete_cmd_dpc(unsigned long instance_addr)
 	u32 context;
 	struct megasas_cmd *cmd;
 	struct megasas_instance *instance = (struct megasas_instance *)instance_addr;
+	unsigned long flags;
 
 	/* If we have already declared adapter dead, donot complete cmds */
 	if (instance->hw_crit_error)
@@ -1828,6 +1863,22 @@ static void megasas_complete_cmd_dpc(unsigned long instance_addr)
 	}
 
 	*instance->consumer = producer;
+
+	/*
+	 * Check if we can restore can_queue
+	 */
+	if (instance->flag & MEGASAS_FW_BUSY
+		&& time_after(jiffies, instance->last_time + 5 * HZ)
+		&& atomic_read(&instance->fw_outstanding) < 17) {
+
+		spin_lock_irqsave(instance->host->host_lock, flags);
+		instance->flag &= ~MEGASAS_FW_BUSY;
+		instance->host->can_queue =
+				instance->max_fw_cmds - MEGASAS_INT_CMDS;
+
+		spin_unlock_irqrestore(instance->host->host_lock, flags);
+	}
+
 }
 
 /**
@@ -2398,6 +2449,8 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	instance->init_id = MEGASAS_DEFAULT_INIT_ID;
 
 	megasas_dbg_lvl = 0;
+	instance->flag = 0;
+	instance->last_time = 0;
 
 	/*
 	 * Initialize MFI Firmware
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index e862992ee37..4dffc918a41 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -18,9 +18,9 @@
 /*
  * MegaRAID SAS Driver meta data
  */
-#define MEGASAS_VERSION				"00.00.03.10-rc1"
-#define MEGASAS_RELDATE				"Feb 14, 2007"
-#define MEGASAS_EXT_VERSION			"Wed Feb 14 10:14:25 PST 2007"
+#define MEGASAS_VERSION				"00.00.03.10-rc5"
+#define MEGASAS_RELDATE				"May 17, 2007"
+#define MEGASAS_EXT_VERSION			"Thu May 17 10:09:32 PDT 2007"
 
 /*
  * Device IDs
@@ -539,6 +539,8 @@ struct megasas_ctrl_info {
 
 #define MEGASAS_DBG_LVL				1
 
+#define MEGASAS_FW_BUSY				1
+
 /*
  * When SCSI mid-layer calls driver's reset routine, driver waits for
  * MEGASAS_RESET_WAIT_TIME seconds for all outstanding IO to complete. Note
@@ -549,8 +551,8 @@ struct megasas_ctrl_info {
 #define MEGASAS_RESET_WAIT_TIME			180
 #define MEGASAS_INTERNAL_CMD_WAIT_TIME		180
 #define	MEGASAS_RESET_NOTICE_INTERVAL		5
-
 #define MEGASAS_IOCTL_CMD			0
+#define MEGASAS_DEFAULT_CMD_TIMEOUT		90
 
 /*
  * FW reports the maximum of number of commands that it can accept (maximum
@@ -1073,7 +1075,6 @@ struct megasas_instance {
 	struct megasas_register_set __iomem *reg_set;
 
 	s8 init_id;
-	u8 reserved[3];
 
 	u16 max_num_sge;
 	u16 max_fw_cmds;
@@ -1104,6 +1105,9 @@ struct megasas_instance {
 
 	struct megasas_instance_template *instancet;
 	struct tasklet_struct isr_tasklet;
+
+	u8 flag;
+	unsigned long last_time;
 };
 
 #define MEGASAS_IS_LOGICAL(scp)						\
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c
index ce63044b1ec..18dd5cc4d7c 100644
--- a/drivers/scsi/scsi_devinfo.c
+++ b/drivers/scsi/scsi_devinfo.c
@@ -209,6 +209,7 @@ static struct {
 	{"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
 	{"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
 	{"PIONEER", "CD-ROM DRM-624X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+	{"Promise", "", NULL, BLIST_SPARSELUN},
 	{"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
 	{"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
 	{"SEAGATE", "ST34555N", "0930", BLIST_NOTQ},	/* Chokes on tagged INQUIRY */
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 00e46662296..3d8c9cb24f9 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1789,7 +1789,7 @@ static void sd_shutdown(struct device *dev)
 static int sd_suspend(struct device *dev, pm_message_t mesg)
 {
 	struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev);
-	int ret;
+	int ret = 0;
 
 	if (!sdkp)
 		return 0;	/* this can happen */
@@ -1798,30 +1798,34 @@ static int sd_suspend(struct device *dev, pm_message_t mesg)
 		sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache\n");
 		ret = sd_sync_cache(sdkp);
 		if (ret)
-			return ret;
+			goto done;
 	}
 
 	if (mesg.event == PM_EVENT_SUSPEND &&
 	    sdkp->device->manage_start_stop) {
 		sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n");
 		ret = sd_start_stop_device(sdkp, 0);
-		if (ret)
-			return ret;
 	}
 
-	return 0;
+done:
+	scsi_disk_put(sdkp);
+	return ret;
 }
 
 static int sd_resume(struct device *dev)
 {
 	struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev);
+	int ret = 0;
 
 	if (!sdkp->device->manage_start_stop)
-		return 0;
+		goto done;
 
 	sd_printk(KERN_NOTICE, sdkp, "Starting disk\n");
+	ret = sd_start_stop_device(sdkp, 1);
 
-	return sd_start_stop_device(sdkp, 1);
+done:
+	scsi_disk_put(sdkp);
+	return ret;
 }
 
 /**
diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
index 69be1324b11..9ac83abc402 100644
--- a/drivers/scsi/stex.c
+++ b/drivers/scsi/stex.c
@@ -32,11 +32,12 @@
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_tcq.h>
+#include <scsi/scsi_dbg.h>
 
 #define DRV_NAME "stex"
-#define ST_DRIVER_VERSION "3.1.0.1"
+#define ST_DRIVER_VERSION "3.6.0000.1"
 #define ST_VER_MAJOR 		3
-#define ST_VER_MINOR 		1
+#define ST_VER_MINOR 		6
 #define ST_OEM 			0
 #define ST_BUILD_VER 		1
 
@@ -113,10 +114,6 @@ enum {
 	SG_CF_64B				= 0x40,	/* 64 bit item */
 	SG_CF_HOST				= 0x20,	/* sg in host memory */
 
-	ST_MAX_ARRAY_SUPPORTED			= 16,
-	ST_MAX_TARGET_NUM			= (ST_MAX_ARRAY_SUPPORTED+1),
-	ST_MAX_LUN_PER_TARGET			= 16,
-
 	st_shasta				= 0,
 	st_vsc					= 1,
 	st_vsc1					= 2,
@@ -586,7 +583,7 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
 	u16 tag;
 	host = cmd->device->host;
 	id = cmd->device->id;
-	lun = cmd->device->channel; /* firmware lun issue work around */
+	lun = cmd->device->lun;
 	hba = (struct st_hba *) &host->hostdata[0];
 
 	switch (cmd->cmnd[0]) {
@@ -605,8 +602,26 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
 			stex_invalid_field(cmd, done);
 		return 0;
 	}
+	case REPORT_LUNS:
+		/*
+		 * The shasta firmware does not report actual luns in the
+		 * target, so fail the command to force sequential lun scan.
+		 * Also, the console device does not support this command.
+		 */
+		if (hba->cardtype == st_shasta || id == host->max_id - 1) {
+			stex_invalid_field(cmd, done);
+			return 0;
+		}
+		break;
+	case TEST_UNIT_READY:
+		if (id == host->max_id - 1) {
+			cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
+			done(cmd);
+			return 0;
+		}
+		break;
 	case INQUIRY:
-		if (id != ST_MAX_ARRAY_SUPPORTED)
+		if (id != host->max_id - 1)
 			break;
 		if (lun == 0 && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
 			stex_direct_copy(cmd, console_inq_page,
@@ -624,7 +639,7 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
 			ver.oem = ST_OEM;
 			ver.build = ST_BUILD_VER;
 			ver.signature[0] = PASSTHRU_SIGNATURE;
-			ver.console_id = ST_MAX_ARRAY_SUPPORTED;
+			ver.console_id = host->max_id - 1;
 			ver.host_no = hba->host->host_no;
 			cmd->result = stex_direct_copy(cmd, &ver, sizeof(ver)) ?
 				DID_OK << 16 | COMMAND_COMPLETE << 8 :
@@ -645,13 +660,8 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
 
 	req = stex_alloc_req(hba);
 
-	if (hba->cardtype == st_yosemite) {
-		req->lun = lun * (ST_MAX_TARGET_NUM - 1) + id;
-		req->target = 0;
-	} else {
-		req->lun = lun;
-		req->target = id;
-	}
+	req->lun = lun;
+	req->target = id;
 
 	/* cdb */
 	memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
@@ -767,18 +777,6 @@ static void stex_ys_commands(struct st_hba *hba,
 			ccb->srb_status = SRB_STATUS_SELECTION_TIMEOUT;
 		else
 			ccb->srb_status = SRB_STATUS_SUCCESS;
-	} else if (ccb->cmd->cmnd[0] == REPORT_LUNS) {
-		u8 *report_lun_data = (u8 *)hba->copy_buffer;
-
-		count = STEX_EXTRA_SIZE;
-		stex_internal_copy(ccb->cmd, report_lun_data,
-			&count, ccb->sg_count, ST_FROM_CMD);
-		if (report_lun_data[2] || report_lun_data[3]) {
-			report_lun_data[2] = 0x00;
-			report_lun_data[3] = 0x08;
-			stex_internal_copy(ccb->cmd, report_lun_data,
-				&count, ccb->sg_count, ST_TO_CMD);
-		}
 	}
 }
 
@@ -995,6 +993,11 @@ static int stex_abort(struct scsi_cmnd *cmd)
 	u32 data;
 	int result = SUCCESS;
 	unsigned long flags;
+
+	printk(KERN_INFO DRV_NAME
+		"(%s): aborting command\n", pci_name(hba->pdev));
+	scsi_print_command(cmd);
+
 	base = hba->mmio_base;
 	spin_lock_irqsave(host->host_lock, flags);
 	if (tag < host->can_queue && hba->ccb[tag].cmd == cmd)
@@ -1051,7 +1054,12 @@ static void stex_hard_reset(struct st_hba *hba)
 	pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
 	pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
 	pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
-	msleep(1);
+
+	/*
+	 * 1 ms may be enough for 8-port controllers. But 16-port controllers
+	 * require more time to finish bus reset. Use 100 ms here for safety
+	 */
+	msleep(100);
 	pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
 	pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
 
@@ -1075,6 +1083,10 @@ static int stex_reset(struct scsi_cmnd *cmd)
 	unsigned long before;
 	hba = (struct st_hba *) &cmd->device->host->hostdata[0];
 
+	printk(KERN_INFO DRV_NAME
+		"(%s): resetting host\n", pci_name(hba->pdev));
+	scsi_print_command(cmd);
+
 	hba->mu_status = MU_STATE_RESETTING;
 
 	if (hba->cardtype == st_shasta)
@@ -1194,7 +1206,7 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		goto out_scsi_host_put;
 	}
 
-	hba->mmio_base = ioremap(pci_resource_start(pdev, 0),
+	hba->mmio_base = ioremap_nocache(pci_resource_start(pdev, 0),
 		pci_resource_len(pdev, 0));
 	if ( !hba->mmio_base) {
 		printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
@@ -1229,12 +1241,18 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	hba->copy_buffer = hba->dma_mem + MU_BUFFER_SIZE;
 	hba->mu_status = MU_STATE_STARTING;
 
-	/* firmware uses id/lun pair for a logical drive, but lun would be
-	   always 0 if CONFIG_SCSI_MULTI_LUN not configured, so we use
-	   channel to map lun here */
-	host->max_channel = ST_MAX_LUN_PER_TARGET - 1;
-	host->max_id = ST_MAX_TARGET_NUM;
-	host->max_lun = 1;
+	if (hba->cardtype == st_shasta) {
+		host->max_lun = 8;
+		host->max_id = 16 + 1;
+	} else if (hba->cardtype == st_yosemite) {
+		host->max_lun = 128;
+		host->max_id = 1 + 1;
+	} else {
+		/* st_vsc and st_vsc1 */
+		host->max_lun = 1;
+		host->max_id = 128 + 1;
+	}
+	host->max_channel = 0;
 	host->unique_id = host->host_no;
 	host->max_cmd_len = STEX_CDB_LENGTH;