Merge branch 'power-supply-scope' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen

5 files changed, 185 insertions, 45 deletions

diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index 7956a10f948..e9c6a6047a0 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -63,6 +63,8 @@
 #ifdef CONFIG_MTRR
 #include <asm/mtrr.h>
 #endif
+#include <linux/kthread.h>
+#include <scsi/scsi_host.h>
 
 #include "mptbase.h"
 #include "lsi/mpi_log_fc.h"
@@ -323,6 +325,32 @@ mpt_is_discovery_complete(MPT_ADAPTER *ioc)
 	return rc;
 }
 
+
+/**
+ *  mpt_remove_dead_ioc_func - kthread context to remove dead ioc
+ * @arg: input argument, used to derive ioc
+ *
+ * Return 0 if controller is removed from pci subsystem.
+ * Return -1 for other case.
+ */
+static int mpt_remove_dead_ioc_func(void *arg)
+{
+	MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg;
+	struct pci_dev *pdev;
+
+	if ((ioc == NULL))
+		return -1;
+
+	pdev = ioc->pcidev;
+	if ((pdev == NULL))
+		return -1;
+
+	pci_remove_bus_device(pdev);
+	return 0;
+}
+
+
+
 /**
  *	mpt_fault_reset_work - work performed on workq after ioc fault
  *	@work: input argument, used to derive ioc
@@ -336,12 +364,45 @@ mpt_fault_reset_work(struct work_struct *work)
 	u32		 ioc_raw_state;
 	int		 rc;
 	unsigned long	 flags;
+	MPT_SCSI_HOST	*hd;
+	struct task_struct *p;
 
 	if (ioc->ioc_reset_in_progress || !ioc->active)
 		goto out;
 
+
 	ioc_raw_state = mpt_GetIocState(ioc, 0);
-	if ((ioc_raw_state & MPI_IOC_STATE_MASK) == MPI_IOC_STATE_FAULT) {
+	if ((ioc_raw_state & MPI_IOC_STATE_MASK) == MPI_IOC_STATE_MASK) {
+		printk(MYIOC_s_INFO_FMT "%s: IOC is non-operational !!!!\n",
+		    ioc->name, __func__);
+
+		/*
+		 * Call mptscsih_flush_pending_cmds callback so that we
+		 * flush all pending commands back to OS.
+		 * This call is required to aovid deadlock at block layer.
+		 * Dead IOC will fail to do diag reset,and this call is safe
+		 * since dead ioc will never return any command back from HW.
+		 */
+		hd = shost_priv(ioc->sh);
+		ioc->schedule_dead_ioc_flush_running_cmds(hd);
+
+		/*Remove the Dead Host */
+		p = kthread_run(mpt_remove_dead_ioc_func, ioc,
+				"mpt_dead_ioc_%d", ioc->id);
+		if (IS_ERR(p))	{
+			printk(MYIOC_s_ERR_FMT
+				"%s: Running mpt_dead_ioc thread failed !\n",
+				ioc->name, __func__);
+		} else {
+			printk(MYIOC_s_WARN_FMT
+				"%s: Running mpt_dead_ioc thread success !\n",
+				ioc->name, __func__);
+		}
+		return; /* don't rearm timer */
+	}
+
+	if ((ioc_raw_state & MPI_IOC_STATE_MASK)
+			== MPI_IOC_STATE_FAULT) {
 		printk(MYIOC_s_WARN_FMT "IOC is in FAULT state (%04xh)!!!\n",
 		       ioc->name, ioc_raw_state & MPI_DOORBELL_DATA_MASK);
 		printk(MYIOC_s_WARN_FMT "Issuing HardReset from %s!!\n",
@@ -6413,8 +6474,19 @@ mpt_config(MPT_ADAPTER *ioc, CONFIGPARMS *pCfg)
 			pReq->Action, ioc->mptbase_cmds.status, timeleft));
 		if (ioc->mptbase_cmds.status & MPT_MGMT_STATUS_DID_IOCRESET)
 			goto out;
-		if (!timeleft)
+		if (!timeleft) {
+			spin_lock_irqsave(&ioc->taskmgmt_lock, flags);
+			if (ioc->ioc_reset_in_progress) {
+				spin_unlock_irqrestore(&ioc->taskmgmt_lock,
+					flags);
+				printk(MYIOC_s_INFO_FMT "%s: host reset in"
+					" progress mpt_config timed out.!!\n",
+					__func__, ioc->name);
+				return -EFAULT;
+			}
+			spin_unlock_irqrestore(&ioc->taskmgmt_lock, flags);
 			issue_hard_reset = 1;
+		}
 		goto out;
 	}
 
@@ -7128,7 +7200,18 @@ mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag)
 	spin_lock_irqsave(&ioc->taskmgmt_lock, flags);
 	if (ioc->ioc_reset_in_progress) {
 		spin_unlock_irqrestore(&ioc->taskmgmt_lock, flags);
-		return 0;
+		ioc->wait_on_reset_completion = 1;
+		do {
+			ssleep(1);
+		} while (ioc->ioc_reset_in_progress == 1);
+		ioc->wait_on_reset_completion = 0;
+		return ioc->reset_status;
+	}
+	if (ioc->wait_on_reset_completion) {
+		spin_unlock_irqrestore(&ioc->taskmgmt_lock, flags);
+		rc = 0;
+		time_count = jiffies;
+		goto exit;
 	}
 	ioc->ioc_reset_in_progress = 1;
 	if (ioc->alt_ioc)
@@ -7165,6 +7248,7 @@ mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag)
 	ioc->ioc_reset_in_progress = 0;
 	ioc->taskmgmt_quiesce_io = 0;
 	ioc->taskmgmt_in_progress = 0;
+	ioc->reset_status = rc;
 	if (ioc->alt_ioc) {
 		ioc->alt_ioc->ioc_reset_in_progress = 0;
 		ioc->alt_ioc->taskmgmt_quiesce_io = 0;
@@ -7180,7 +7264,7 @@ mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag)
 					ioc->alt_ioc, MPT_IOC_POST_RESET);
 		}
 	}
-
+exit:
 	dtmprintk(ioc,
 	    printk(MYIOC_s_DEBUG_FMT
 		"HardResetHandler: completed (%d seconds): %s\n", ioc->name,
diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index fe902338539..b4d24dc081a 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -76,8 +76,8 @@
 #define COPYRIGHT	"Copyright (c) 1999-2008 " MODULEAUTHOR
 #endif
 
-#define MPT_LINUX_VERSION_COMMON	"3.04.19"
-#define MPT_LINUX_PACKAGE_NAME		"@(#)mptlinux-3.04.19"
+#define MPT_LINUX_VERSION_COMMON	"3.04.20"
+#define MPT_LINUX_PACKAGE_NAME		"@(#)mptlinux-3.04.20"
 #define WHAT_MAGIC_STRING		"@" "(" "#" ")"
 
 #define show_mptmod_ver(s,ver)  \
@@ -554,10 +554,47 @@ struct mptfc_rport_info
 	u8		flags;
 };
 
+/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
+
+/*
+ * MPT_SCSI_HOST defines - Used by the IOCTL and the SCSI drivers
+ * Private to the driver.
+ */
+
+#define MPT_HOST_BUS_UNKNOWN		(0xFF)
+#define MPT_HOST_TOO_MANY_TM		(0x05)
+#define MPT_HOST_NVRAM_INVALID		(0xFFFFFFFF)
+#define MPT_HOST_NO_CHAIN		(0xFFFFFFFF)
+#define MPT_NVRAM_MASK_TIMEOUT		(0x000000FF)
+#define MPT_NVRAM_SYNC_MASK		(0x0000FF00)
+#define MPT_NVRAM_SYNC_SHIFT		(8)
+#define MPT_NVRAM_DISCONNECT_ENABLE	(0x00010000)
+#define MPT_NVRAM_ID_SCAN_ENABLE	(0x00020000)
+#define MPT_NVRAM_LUN_SCAN_ENABLE	(0x00040000)
+#define MPT_NVRAM_TAG_QUEUE_ENABLE	(0x00080000)
+#define MPT_NVRAM_WIDE_DISABLE		(0x00100000)
+#define MPT_NVRAM_BOOT_CHOICE		(0x00200000)
+
+typedef enum {
+	FC,
+	SPI,
+	SAS
+} BUS_TYPE;
+
+typedef struct _MPT_SCSI_HOST {
+	struct _MPT_ADAPTER		 *ioc;
+	ushort			  sel_timeout[MPT_MAX_FC_DEVICES];
+	char			  *info_kbuf;
+	long			  last_queue_full;
+	u16			  spi_pending;
+	struct list_head	  target_reset_list;
+} MPT_SCSI_HOST;
+
 typedef void (*MPT_ADD_SGE)(void *pAddr, u32 flagslength, dma_addr_t dma_addr);
 typedef void (*MPT_ADD_CHAIN)(void *pAddr, u8 next, u16 length,
 		dma_addr_t dma_addr);
 typedef void (*MPT_SCHEDULE_TARGET_RESET)(void *ioc);
+typedef void (*MPT_FLUSH_RUNNING_CMDS)(MPT_SCSI_HOST *hd);
 
 /*
  *  Adapter Structure - pci_dev specific. Maximum: MPT_MAX_ADAPTERS
@@ -716,7 +753,10 @@ typedef struct _MPT_ADAPTER
 	int			 taskmgmt_in_progress;
 	u8			 taskmgmt_quiesce_io;
 	u8			 ioc_reset_in_progress;
+	u8			 reset_status;
+	u8			 wait_on_reset_completion;
 	MPT_SCHEDULE_TARGET_RESET schedule_target_reset;
+	MPT_FLUSH_RUNNING_CMDS schedule_dead_ioc_flush_running_cmds;
 	struct work_struct	 sas_persist_task;
 
 	struct work_struct	 fc_setup_reset_work;
@@ -830,19 +870,6 @@ typedef struct _MPT_LOCAL_REPLY {
 	u32	pad;
 } MPT_LOCAL_REPLY;
 
-#define MPT_HOST_BUS_UNKNOWN		(0xFF)
-#define MPT_HOST_TOO_MANY_TM		(0x05)
-#define MPT_HOST_NVRAM_INVALID		(0xFFFFFFFF)
-#define MPT_HOST_NO_CHAIN		(0xFFFFFFFF)
-#define MPT_NVRAM_MASK_TIMEOUT		(0x000000FF)
-#define MPT_NVRAM_SYNC_MASK		(0x0000FF00)
-#define MPT_NVRAM_SYNC_SHIFT		(8)
-#define MPT_NVRAM_DISCONNECT_ENABLE	(0x00010000)
-#define MPT_NVRAM_ID_SCAN_ENABLE	(0x00020000)
-#define MPT_NVRAM_LUN_SCAN_ENABLE	(0x00040000)
-#define MPT_NVRAM_TAG_QUEUE_ENABLE	(0x00080000)
-#define MPT_NVRAM_WIDE_DISABLE		(0x00100000)
-#define MPT_NVRAM_BOOT_CHOICE		(0x00200000)
 
 /* The TM_STATE variable is used to provide strict single threading of TM
  * requests as well as communicate TM error conditions.
@@ -851,21 +878,6 @@ typedef struct _MPT_LOCAL_REPLY {
 #define	TM_STATE_IN_PROGRESS   (1)
 #define	TM_STATE_ERROR	       (2)
 
-typedef enum {
-	FC,
-	SPI,
-	SAS
-} BUS_TYPE;
-
-typedef struct _MPT_SCSI_HOST {
-	MPT_ADAPTER		 *ioc;
-	ushort			  sel_timeout[MPT_MAX_FC_DEVICES];
-	char 			  *info_kbuf;
-	long			  last_queue_full;
-	u16			  spi_pending;
-	struct list_head	  target_reset_list;
-} MPT_SCSI_HOST;
-
 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 /*
  *	More Dynamic Multi-Pathing stuff...
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 7596aecd507..9d950429854 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -92,6 +92,11 @@ static int max_lun = MPTSAS_MAX_LUN;
 module_param(max_lun, int, 0);
 MODULE_PARM_DESC(max_lun, " max lun, default=16895 ");
 
+static int mpt_loadtime_max_sectors = 8192;
+module_param(mpt_loadtime_max_sectors, int, 0);
+MODULE_PARM_DESC(mpt_loadtime_max_sectors,
+		" Maximum sector define for Host Bus Adaptor.Range 64 to 8192 default=8192");
+
 static u8	mptsasDoneCtx = MPT_MAX_PROTOCOL_DRIVERS;
 static u8	mptsasTaskCtx = MPT_MAX_PROTOCOL_DRIVERS;
 static u8	mptsasInternalCtx = MPT_MAX_PROTOCOL_DRIVERS; /* Used only for internal commands */
@@ -285,10 +290,11 @@ mptsas_add_fw_event(MPT_ADAPTER *ioc, struct fw_event_work *fw_event,
 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
 	list_add_tail(&fw_event->list, &ioc->fw_event_list);
 	INIT_DELAYED_WORK(&fw_event->work, mptsas_firmware_event_work);
-	devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: add (fw_event=0x%p)\n",
-	    ioc->name, __func__, fw_event));
-	queue_delayed_work(ioc->fw_event_q, &fw_event->work,
-	    delay);
+	devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: add (fw_event=0x%p)"
+		"on cpuid %d\n", ioc->name, __func__,
+		fw_event, smp_processor_id()));
+	queue_delayed_work_on(smp_processor_id(), ioc->fw_event_q,
+	    &fw_event->work, delay);
 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
 }
 
@@ -300,10 +306,11 @@ mptsas_requeue_fw_event(MPT_ADAPTER *ioc, struct fw_event_work *fw_event,
 	unsigned long flags;
 	spin_lock_irqsave(&ioc->fw_event_lock, flags);
 	devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT "%s: reschedule task "
-	    "(fw_event=0x%p)\n", ioc->name, __func__, fw_event));
+	    "(fw_event=0x%p)on cpuid %d\n", ioc->name, __func__,
+		fw_event, smp_processor_id()));
 	fw_event->retries++;
-	queue_delayed_work(ioc->fw_event_q, &fw_event->work,
-	    msecs_to_jiffies(delay));
+	queue_delayed_work_on(smp_processor_id(), ioc->fw_event_q,
+	    &fw_event->work, msecs_to_jiffies(delay));
 	spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
 }
 
@@ -1943,6 +1950,15 @@ static enum blk_eh_timer_return mptsas_eh_timed_out(struct scsi_cmnd *sc)
 		goto done;
 	}
 
+	/* In case if IOC is in reset from internal context.
+	*  Do not execute EEH for the same IOC. SML should to reset timer.
+	*/
+	if (ioc->ioc_reset_in_progress) {
+		dtmprintk(ioc, printk(MYIOC_s_WARN_FMT ": %s: ioc is in reset,"
+		    "SML need to reset the timer (sc=%p)\n",
+		    ioc->name, __func__, sc));
+		rc = BLK_EH_RESET_TIMER;
+	}
 	vdevice = sc->device->hostdata;
 	if (vdevice && vdevice->vtarget && (vdevice->vtarget->inDMD
 		|| vdevice->vtarget->deleted)) {
@@ -5142,6 +5158,8 @@ mptsas_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	ioc->TaskCtx = mptsasTaskCtx;
 	ioc->InternalCtx = mptsasInternalCtx;
 	ioc->schedule_target_reset = &mptsas_schedule_target_reset;
+	ioc->schedule_dead_ioc_flush_running_cmds =
+				&mptscsih_flush_running_cmds;
 	/*  Added sanity check on readiness of the MPT adapter.
 	 */
 	if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
@@ -5239,6 +5257,21 @@ mptsas_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		sh->sg_tablesize = numSGE;
 	}
 
+	if (mpt_loadtime_max_sectors) {
+		if (mpt_loadtime_max_sectors < 64 ||
+			mpt_loadtime_max_sectors > 8192) {
+			printk(MYIOC_s_INFO_FMT "Invalid value passed for"
+				"mpt_loadtime_max_sectors %d."
+				"Range from 64 to 8192\n", ioc->name,
+				mpt_loadtime_max_sectors);
+		}
+		mpt_loadtime_max_sectors &=  0xFFFFFFFE;
+		dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
+			"Resetting max sector to %d from %d\n",
+		  ioc->name, mpt_loadtime_max_sectors, sh->max_sectors));
+		sh->max_sectors = mpt_loadtime_max_sectors;
+	}
+
 	hd = shost_priv(sh);
 	hd->ioc = ioc;
 
diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c
index ce61a576976..0c3ced70707 100644
--- a/drivers/message/fusion/mptscsih.c
+++ b/drivers/message/fusion/mptscsih.c
@@ -830,7 +830,8 @@ mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
 					if ((pScsiReq->CDB[0] == READ_6  && ((pScsiReq->CDB[1] & 0x02) == 0)) ||
 					    pScsiReq->CDB[0] == READ_10 ||
 					    pScsiReq->CDB[0] == READ_12 ||
-					    pScsiReq->CDB[0] == READ_16 ||
+						(pScsiReq->CDB[0] == READ_16 &&
+						((pScsiReq->CDB[1] & 0x02) == 0)) ||
 					    pScsiReq->CDB[0] == VERIFY  ||
 					    pScsiReq->CDB[0] == VERIFY_16) {
 						if (scsi_bufflen(sc) !=
@@ -1024,7 +1025,7 @@ out:
  *
  *	Must be called while new I/Os are being queued.
  */
-static void
+void
 mptscsih_flush_running_cmds(MPT_SCSI_HOST *hd)
 {
 	MPT_ADAPTER *ioc = hd->ioc;
@@ -1055,6 +1056,7 @@ mptscsih_flush_running_cmds(MPT_SCSI_HOST *hd)
 		sc->scsi_done(sc);
 	}
 }
+EXPORT_SYMBOL(mptscsih_flush_running_cmds);
 
 /*
  *	mptscsih_search_running_cmds - Delete any commands associated
@@ -1629,7 +1631,13 @@ mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, int lun,
 		return 0;
 	}
 
-	if (ioc_raw_state & MPI_DOORBELL_ACTIVE) {
+	/* DOORBELL ACTIVE check is not required if
+	*  MPI_IOCFACTS_CAPABILITY_HIGH_PRI_Q is supported.
+	*/
+
+	if (!((ioc->facts.IOCCapabilities & MPI_IOCFACTS_CAPABILITY_HIGH_PRI_Q)
+		 && (ioc->facts.MsgVersion >= MPI_VERSION_01_05)) &&
+		(ioc_raw_state & MPI_DOORBELL_ACTIVE)) {
 		printk(MYIOC_s_WARN_FMT
 			"TaskMgmt type=%x: ioc_state: "
 			"DOORBELL_ACTIVE (0x%x)!\n",
@@ -1728,7 +1736,9 @@ mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, int lun,
 		printk(MYIOC_s_WARN_FMT
 		       "Issuing Reset from %s!! doorbell=0x%08x\n",
 		       ioc->name, __func__, mpt_GetIocState(ioc, 0));
-		retval = mpt_Soft_Hard_ResetHandler(ioc, CAN_SLEEP);
+		retval = (ioc->bus_type == SAS) ?
+			mpt_HardResetHandler(ioc, CAN_SLEEP) :
+			mpt_Soft_Hard_ResetHandler(ioc, CAN_SLEEP);
 		mpt_free_msg_frame(ioc, mf);
 	}
 
diff --git a/drivers/message/fusion/mptscsih.h b/drivers/message/fusion/mptscsih.h
index 45a5ff3eff6..43e75ff3992 100644
--- a/drivers/message/fusion/mptscsih.h
+++ b/drivers/message/fusion/mptscsih.h
@@ -135,3 +135,4 @@ extern int mptscsih_is_phys_disk(MPT_ADAPTER *ioc, u8 channel, u8 id);
 extern struct device_attribute *mptscsih_host_attrs[];
 extern struct scsi_cmnd	*mptscsih_get_scsi_lookup(MPT_ADAPTER *ioc, int i);
 extern void mptscsih_taskmgmt_response_code(MPT_ADAPTER *ioc, u8 response_code);
+extern void mptscsih_flush_running_cmds(MPT_SCSI_HOST *hd);