RE: [PATCH V2 01/19] aacraid: Remove __GFP_DMA for raw srb memory

RE: [PATCH V2 01/19] aacraid: Remove __GFP_DMA for raw srb memory

[Dave Carroll]

> -----Original Message-----
> From: Raghava Aditya Renukunta
> [mailto:RaghavaAditya.Renukunta@microsemi.com]
> Sent: Wednesday, May 10, 2017 10:40 AM
> To: jejb@linux.vnet.ibm.com; martin.petersen@oracle.com; linux-
> scsi@vger.kernel.org
> Cc: Dave Carroll <david.carroll@microsemi.com>; Gana Sridaran
> <gana.sridaran@microsemi.com>; Scott Benesh
> <scott.benesh@microsemi.com>; Prasad Munirathnam
> <Prasad.Munirathnam@microsemi.com>
> Subject: [PATCH V2 01/19] aacraid: Remove __GFP_DMA for raw srb memory
> 
> The raw srb commands do not requires memory that in the ZONE_DMA memory
> space. For 32bit srb commands use GFP_DMA32 to limit the memory to 32bit
> memory range (4GB).
> 
> Signed-off-by: Raghava Aditya Renukunta
> <RaghavaAditya.Renukunta@microsemi.com>
> 
> ---
> Changes in V2:
> Corrected flag name to GFP_DMA32 in patch description and corrected
> GFP_DMA to __GFP_DMA in patch heading Removed comment
> 
>  drivers/scsi/aacraid/commctrl.c | 15 +++++++--------
>  1 file changed, 7 insertions(+), 8 deletions(-)

Reviewed-by: Dave Carroll <david.carroll@microsemi.com>

RE: [PATCH V2 02/19] aacraid: Fix DMAR issues with iommu=pt

[Dave Carroll]

> -----Original Message-----
> From: Raghava Aditya Renukunta
> [mailto:RaghavaAditya.Renukunta@microsemi.com]
> Sent: Wednesday, May 10, 2017 10:40 AM
> To: jejb@linux.vnet.ibm.com; martin.petersen@oracle.com; linux-
> scsi@vger.kernel.org
> Cc: Dave Carroll <david.carroll@microsemi.com>; Gana Sridaran
> <gana.sridaran@microsemi.com>; Scott Benesh
> <scott.benesh@microsemi.com>; Prasad Munirathnam
> <Prasad.Munirathnam@microsemi.com>
> Subject: [PATCH V2 02/19] aacraid: Fix DMAR issues with iommu=pt
> 
> The driver changed the DMA consistent map after consistent memory was
> allocated, this invalidated the IOMMU identity mapping. The fix was to make
> sure that we set the DMA consistent mask setting once depending on the
> controller card.
> 
> Signed-off-by: Raghava Aditya Renukunta
> <RaghavaAditya.Renukunta@microsemi.com>
> 
> ---
> Changes in V2:
> None
> 
>  drivers/scsi/aacraid/aachba.c  | 17 ++++++-----------
> drivers/scsi/aacraid/commsup.c | 29 ++++++++++++++++++-----------
>  drivers/scsi/aacraid/linit.c   | 32 +++++++++++++++++++-------------
>  3 files changed, 43 insertions(+), 35 deletions(-)
> 
Reviewed-by: Dave Carroll <david.carroll@microsemi.com>

RE: [PATCH V2 15/19] aacraid: Make sure ioctl returns on controller reset

[Dave Carroll]

> -----Original Message-----
> From: Raghava Aditya Renukunta
> [mailto:RaghavaAditya.Renukunta@microsemi.com]
> Sent: Wednesday, May 10, 2017 10:40 AM
> To: jejb@linux.vnet.ibm.com; martin.petersen@oracle.com; linux-
> scsi@vger.kernel.org
> Cc: Dave Carroll <david.carroll@microsemi.com>; Gana Sridaran
> <gana.sridaran@microsemi.com>; Scott Benesh
> <scott.benesh@microsemi.com>; Prasad Munirathnam
> <Prasad.Munirathnam@microsemi.com>
> Subject: [PATCH V2 15/19] aacraid: Make sure ioctl returns on controller reset
> 
> Made sure that ioctl commands return in case of a controller reset.
> 
> Signed-off-by: Raghava Aditya Renukunta
> <RaghavaAditya.Renukunta@microsemi.com>
> 
> ---
> Changes in V2:
> Removed incorrect up
> Cleared wait flag once event is received not before

Reviewed-by: Dave Carroll <david.carroll@microsemi.com>

[PATCH V2 00/19] aacraid: Patchset with reset rework and misc fixes

[Raghava Aditya Renukunta]

This patchset primarily focuses on tweaking and hardening the controller
reset support for both ARC and HBA1000 devices. Now the driver can only
reset the controller thru eh reset. Included a srb memory fix and pci dma
allocation fix.

Changes in V2:
 - Corrected heading and description for srb memory patch and removed stray
   comment.
 - Removed incorrect up function call and cleared fib wait flag after call
   to down interruptible in the ioctl return on ctrl reset patch.
 - Added review acknowledgements by David Carroll thank you Dave for
   finding the above issues in the above 2 patches.

Raghava Aditya Renukunta (19):
 [SCSI] aacraid: Remove __GFP_DMA for raw srb memory
 [SCSI] aacraid: Fix DMAR issues with  iommu=pt
 [SCSI] aacraid: Added 32 and 64 queue depth for arc natives
 [SCSI] aacraid: Set correct Queue Depth for HBA1000 RAW disks
 [SCSI] aacraid: Remove reset support from check_health
 [SCSI] aacraid: Change wait time for fib completion
 [SCSI] aacraid: Log count info of scsi cmds before reset
 [SCSI] aacraid: Print ctrl status before eh reset
 [SCSI] aacraid: Using single reset mask for IOP reset
 [SCSI] aacraid: Rework IOP reset
 [SCSI] aacraid: Add periodic checks to see IOP reset status
 [SCSI] aacraid: Rework SOFT reset code
 [SCSI] aacraid: Rework aac_src_restart
 [SCSI] aacraid: Use correct function to get ctrl health
 [SCSI] aacraid: Make sure ioctl returns on controller reset
 [SCSI] aacraid: Enable ctrl reset for both hba and arc
 [SCSI] aacraid: Add reset debugging statements
 [SCSI] aacraid: Remove reference to Series-9
 [SCSI] aacraid: Update driver version to 50834

 drivers/scsi/aacraid/aachba.c   |  17 ++-
 drivers/scsi/aacraid/aacraid.h  |  22 +++-
 drivers/scsi/aacraid/commctrl.c |  15 ++-
 drivers/scsi/aacraid/comminit.c |  18 +---
 drivers/scsi/aacraid/commsup.c  |  78 +++++++-------
 drivers/scsi/aacraid/linit.c    | 232 ++++++++++++++++++++++++----------------
 drivers/scsi/aacraid/src.c      | 136 +++++++++++++----------
 7 files changed, 298 insertions(+), 220 deletions(-)

-- 
2.7.4

[PATCH V2 01/19] aacraid: Remove __GFP_DMA for raw srb memory

[Raghava Aditya Renukunta]

The raw srb commands do not requires memory that in the ZONE_DMA
memory space. For 32bit srb commands use GFP_DMA32 to limit the memory
to 32bit memory range (4GB).

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>

---
Changes in V2:
Corrected flag name to GFP_DMA32 in patch description and corrected
GFP_DMA to __GFP_DMA in patch heading
Removed comment

 drivers/scsi/aacraid/commctrl.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c
index d2f8d59..106b933 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -668,7 +668,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 				goto cleanup;
 			}
 
-			p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
+			p = kmalloc(sg_count[i], GFP_KERNEL);
 			if (!p) {
 				rcode = -ENOMEM;
 				goto cleanup;
@@ -732,8 +732,8 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 					rcode = -EINVAL;
 					goto cleanup;
 				}
-				/* Does this really need to be GFP_DMA? */
-				p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
+
+				p = kmalloc(sg_count[i], GFP_KERNEL);
 				if(!p) {
 					dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 					  sg_count[i], i, upsg->count));
@@ -788,8 +788,8 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 					rcode = -EINVAL;
 					goto cleanup;
 				}
-				/* Does this really need to be GFP_DMA? */
-				p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
+
+				p = kmalloc(sg_count[i], GFP_KERNEL);
 				if(!p) {
 					dprintk((KERN_DEBUG "aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 						sg_count[i], i, usg->count));
@@ -845,8 +845,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 					rcode = -EINVAL;
 					goto cleanup;
 				}
-				/* Does this really need to be GFP_DMA? */
-				p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
+				p = kmalloc(sg_count[i], GFP_KERNEL|GFP_DMA32);
 				if (!p) {
 					dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 						sg_count[i], i, usg->count));
@@ -887,7 +886,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 					rcode = -EINVAL;
 					goto cleanup;
 				}
-				p = kmalloc(sg_count[i], GFP_KERNEL);
+				p = kmalloc(sg_count[i], GFP_KERNEL|GFP_DMA32);
 				if (!p) {
 					dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 					  sg_count[i], i, upsg->count));
-- 
2.7.4

[PATCH V2 02/19] aacraid: Fix DMAR issues with iommu=pt

[Raghava Aditya Renukunta]

The driver changed the DMA consistent map after consistent memory was
allocated, this invalidated the IOMMU identity mapping. The fix was to
make sure that we set the DMA consistent mask setting once depending on
the controller card.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/aachba.c  | 17 ++++++-----------
 drivers/scsi/aacraid/commsup.c | 29 ++++++++++++++++++-----------
 drivers/scsi/aacraid/linit.c   | 32 +++++++++++++++++++-------------
 3 files changed, 43 insertions(+), 35 deletions(-)

diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index 43d8838..707ee2f 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -2071,20 +2071,15 @@ int aac_get_adapter_info(struct aac_dev* dev)
 		expose_physicals = 0;
 	}
 
-	if(dev->dac_support != 0) {
-		if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(64)) &&
-			!pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(64))) {
+	if (dev->dac_support) {
+		if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(64))) {
 			if (!dev->in_reset)
-				printk(KERN_INFO"%s%d: 64 Bit DAC enabled\n",
-					dev->name, dev->id);
-		} else if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(32)) &&
-			!pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(32))) {
-			printk(KERN_INFO"%s%d: DMA mask set failed, 64 Bit DAC disabled\n",
-				dev->name, dev->id);
+				dev_info(&dev->pdev->dev, "64 Bit DAC enabled\n");
+		} else if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(32))) {
+			dev_info(&dev->pdev->dev, "DMA mask set failed, 64 Bit DAC disabled\n");
 			dev->dac_support = 0;
 		} else {
-			printk(KERN_WARNING"%s%d: No suitable DMA available.\n",
-				dev->name, dev->id);
+			dev_info(&dev->pdev->dev, "No suitable DMA available\n");
 			rcode = -ENOMEM;
 		}
 	}
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index d08920d..47068b2 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -1513,6 +1513,7 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
 	struct scsi_cmnd *command_list;
 	int jafo = 0;
 	int bled;
+	u64 dmamask;
 
 	/*
 	 * Assumptions:
@@ -1580,21 +1581,27 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
 	aac_free_irq(aac);
 	kfree(aac->fsa_dev);
 	aac->fsa_dev = NULL;
+
+	dmamask = DMA_BIT_MASK(32);
 	quirks = aac_get_driver_ident(index)->quirks;
-	if (quirks & AAC_QUIRK_31BIT) {
-		if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(31)))) ||
-		  ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(31)))))
-			goto out;
-	} else {
-		if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32)))) ||
-		  ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(32)))))
-			goto out;
+	if (quirks & AAC_QUIRK_31BIT)
+		retval = pci_set_dma_mask(aac->pdev, dmamask);
+	else if (!(quirks & AAC_QUIRK_SRC))
+		retval = pci_set_dma_mask(aac->pdev, dmamask);
+	else
+		retval = pci_set_consistent_dma_mask(aac->pdev, dmamask);
+
+	if (quirks & AAC_QUIRK_31BIT && !retval) {
+		dmamask = DMA_BIT_MASK(31);
+		retval = pci_set_consistent_dma_mask(aac->pdev, dmamask);
 	}
+
+	if (retval)
+		goto out;
+
 	if ((retval = (*(aac_get_driver_ident(index)->init))(aac)))
 		goto out;
-	if (quirks & AAC_QUIRK_31BIT)
-		if ((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32))))
-			goto out;
+
 	if (jafo) {
 		aac->thread = kthread_run(aac_command_thread, aac, "%s",
 					  aac->name);
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 372a075..5a201da 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -1403,6 +1403,7 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	int error = -ENODEV;
 	int unique_id = 0;
 	u64 dmamask;
+	int mask_bits = 0;
 	extern int aac_sync_mode;
 
 	/*
@@ -1426,18 +1427,32 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 		goto out;
 	error = -ENODEV;
 
+	if (!(aac_drivers[index].quirks & AAC_QUIRK_SRC)) {
+		error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (error) {
+			dev_err(&pdev->dev, "PCI 32 BIT dma mask set failed");
+			goto out_disable_pdev;
+		}
+	}
+
 	/*
 	 * If the quirk31 bit is set, the adapter needs adapter
 	 * to driver communication memory to be allocated below 2gig
 	 */
-	if (aac_drivers[index].quirks & AAC_QUIRK_31BIT)
+	if (aac_drivers[index].quirks & AAC_QUIRK_31BIT) {
 		dmamask = DMA_BIT_MASK(31);
-	else
+		mask_bits = 31;
+	} else {
 		dmamask = DMA_BIT_MASK(32);
+		mask_bits = 32;
+	}
 
-	if (pci_set_dma_mask(pdev, dmamask) ||
-			pci_set_consistent_dma_mask(pdev, dmamask))
+	error = pci_set_consistent_dma_mask(pdev, dmamask);
+	if (error) {
+		dev_err(&pdev->dev, "PCI %d B consistent dma mask set failed\n"
+				, mask_bits);
 		goto out_disable_pdev;
+	}
 
 	pci_set_master(pdev);
 
@@ -1501,15 +1516,6 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
 		goto out_deinit;
 	}
 
-	/*
-	 * If we had set a smaller DMA mask earlier, set it to 4gig
-	 * now since the adapter can dma data to at least a 4gig
-	 * address space.
-	 */
-	if (aac_drivers[index].quirks & AAC_QUIRK_31BIT)
-		if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
-			goto out_deinit;
-
 	aac->maximum_num_channels = aac_drivers[index].channels;
 	error = aac_get_adapter_info(aac);
 	if (error < 0)
-- 
2.7.4

[PATCH V2 03/19] aacraid: Added 32 and 64 queue depth for arc natives

[Raghava Aditya Renukunta]

The qd for ARC Native disks is calculated by dividing the max IO 1024
by the number of disks or 256 which ever is lower. This causes poor
disk IO performance.

The fix is set the qd based on the type of disk (SAS - 64 and SATA -
32).

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/aacraid.h |  1 +
 drivers/scsi/aacraid/linit.c   | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index d036a80..3ede6de 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -415,6 +415,7 @@ struct aac_ciss_identify_pd {
  * These macros convert from physical channels to virtual channels
  */
 #define CONTAINER_CHANNEL		(0)
+#define NATIVE_CHANNEL			(1)
 #define CONTAINER_TO_CHANNEL(cont)	(CONTAINER_CHANNEL)
 #define CONTAINER_TO_ID(cont)		(cont)
 #define CONTAINER_TO_LUN(cont)		(0)
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 5a201da..5e1a2d6 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -466,6 +466,17 @@ static int aac_slave_configure(struct scsi_device *sdev)
 			++num_lsu;
 
 		depth = (host->can_queue - num_one) / num_lsu;
+
+		if (sdev_channel(sdev) != NATIVE_CHANNEL)
+			goto common_config;
+
+		/*
+		 * Check if SATA drive
+		 */
+		if (strncmp(sdev->vendor, "ATA", 3) == 0)
+			depth = 32;
+		else
+			depth = 64;
 	}
 
 common_config:
-- 
2.7.4

[PATCH V2 04/19] aacraid: Set correct Queue Depth for HBA1000 RAW disks

[Raghava Aditya Renukunta]

The default queue depth for non NATIVE RAW disks is calculated from the
number of fibs and number of disks or a max of 256. This causes poor disk
IO performance.

The fix is to set default qd based on the type of disks
(SATA -32 and SAS -64)

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

--
Changes in V2:
None
-
 drivers/scsi/aacraid/linit.c | 28 ++++++++++++++++++++--------
 1 file changed, 20 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 5e1a2d6..9ef98e4 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -405,17 +405,23 @@ static int aac_slave_configure(struct scsi_device *sdev)
 	int chn, tid;
 	unsigned int depth = 0;
 	unsigned int set_timeout = 0;
+	bool set_qd_dev_type = false;
+	u8 devtype = 0;
 
 	chn = aac_logical_to_phys(sdev_channel(sdev));
 	tid = sdev_id(sdev);
-	if (chn < AAC_MAX_BUSES && tid < AAC_MAX_TARGETS &&
-		aac->hba_map[chn][tid].devtype == AAC_DEVTYPE_NATIVE_RAW) {
-		depth = aac->hba_map[chn][tid].qd_limit;
+	if (chn < AAC_MAX_BUSES && tid < AAC_MAX_TARGETS && aac->sa_firmware) {
+		devtype = aac->hba_map[chn][tid].devtype;
+
+		if (devtype == AAC_DEVTYPE_NATIVE_RAW)
+			depth = aac->hba_map[chn][tid].qd_limit;
+		else if (devtype == AAC_DEVTYPE_ARC_RAW)
+			set_qd_dev_type = true;
+
 		set_timeout = 1;
 		goto common_config;
 	}
 
-
 	if (aac->jbod && (sdev->type == TYPE_DISK))
 		sdev->removable = 1;
 
@@ -470,16 +476,22 @@ static int aac_slave_configure(struct scsi_device *sdev)
 		if (sdev_channel(sdev) != NATIVE_CHANNEL)
 			goto common_config;
 
-		/*
-		 * Check if SATA drive
-		 */
+		set_qd_dev_type = true;
+
+	}
+
+common_config:
+
+	/*
+	 * Check if SATA drive
+	 */
+	if (set_qd_dev_type) {
 		if (strncmp(sdev->vendor, "ATA", 3) == 0)
 			depth = 32;
 		else
 			depth = 64;
 	}
 
-common_config:
 	/*
 	 * Firmware has an individual device recovery time typically
 	 * of 35 seconds, give us a margin.
-- 
2.7.4

[PATCH V2 05/19] aacraid: Remove reset support from check_health

[Raghava Aditya Renukunta]

Check health does not need to reset the ctrl but just return the
controller health status.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/commsup.c | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 47068b2..3299012 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -1775,8 +1775,6 @@ int aac_check_health(struct aac_dev * aac)
 	int BlinkLED;
 	unsigned long time_now, flagv = 0;
 	struct list_head * entry;
-	struct Scsi_Host * host;
-	int bled;
 
 	/* Extending the scope of fib_lock slightly to protect aac->in_reset */
 	if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
@@ -1887,19 +1885,6 @@ int aac_check_health(struct aac_dev * aac)
 
 	printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED);
 
-	if (!aac_check_reset || ((aac_check_reset == 1) &&
-		(aac->supplement_adapter_info.supported_options2 &
-			AAC_OPTION_IGNORE_RESET)))
-		goto out;
-	host = aac->scsi_host_ptr;
-	if (aac->thread->pid != current->pid)
-		spin_lock_irqsave(host->host_lock, flagv);
-	bled = aac_check_reset != 1 ? 1 : 0;
-	_aac_reset_adapter(aac, bled, IOP_HWSOFT_RESET);
-	if (aac->thread->pid != current->pid)
-		spin_unlock_irqrestore(host->host_lock, flagv);
-	return BlinkLED;
-
 out:
 	aac->in_reset = 0;
 	return BlinkLED;
-- 
2.7.4

[PATCH V2 06/19] aacraid: Change wait time for fib completion

[Raghava Aditya Renukunta]

Change the completion wait time for the fibs in the reset and abort
callback from 2 minutes to 15 seconds.

2 minutes is too long for waiting for completion.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/linit.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 9ef98e4..f6a11af 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -684,8 +684,8 @@ static int aac_eh_abort(struct scsi_cmnd* cmd)
 				  (fib_callback) aac_hba_callback,
 				  (void *) cmd);
 
-		/* Wait up to 2 minutes for completion */
-		for (count = 0; count < 120; ++count) {
+		/* Wait up to 15 secs for completion */
+		for (count = 0; count < 15; ++count) {
 			if (cmd->SCp.sent_command) {
 				ret = SUCCESS;
 				break;
@@ -840,8 +840,8 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
 				  (fib_callback) aac_hba_callback,
 				  (void *) cmd);
 
-		/* Wait up to 2 minutes for completion */
-		for (count = 0; count < 120; ++count) {
+		/* Wait up to 15 seconds for completion */
+		for (count = 0; count < 15; ++count) {
 			if (cmd->SCp.sent_command) {
 				ret = SUCCESS;
 				break;
-- 
2.7.4

[PATCH V2 07/19] aacraid: Log count info of scsi cmds before reset

[Raghava Aditya Renukunta]

Log the location of the scsi cmds before triggering a reset. This
information is useful for debugging.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/linit.c | 90 ++++++++++++++++++++++++++------------------
 1 file changed, 53 insertions(+), 37 deletions(-)

diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index f6a11af..0a8d303 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -624,6 +624,56 @@ static int aac_ioctl(struct scsi_device *sdev, int cmd, void __user * arg)
 	return aac_do_ioctl(dev, cmd, arg);
 }
 
+static int get_num_of_incomplete_fibs(struct aac_dev *aac)
+{
+
+	unsigned long flags;
+	struct scsi_device *sdev = NULL;
+	struct Scsi_Host *shost = aac->scsi_host_ptr;
+	struct scsi_cmnd *scmnd = NULL;
+	struct device *ctrl_dev;
+
+	int mlcnt  = 0;
+	int llcnt  = 0;
+	int ehcnt  = 0;
+	int fwcnt  = 0;
+	int krlcnt = 0;
+
+	__shost_for_each_device(sdev, shost) {
+		spin_lock_irqsave(&sdev->list_lock, flags);
+		list_for_each_entry(scmnd, &sdev->cmd_list, list) {
+			switch (scmnd->SCp.phase) {
+			case AAC_OWNER_FIRMWARE:
+				fwcnt++;
+				break;
+			case AAC_OWNER_ERROR_HANDLER:
+				ehcnt++;
+				break;
+			case AAC_OWNER_LOWLEVEL:
+				llcnt++;
+				break;
+			case AAC_OWNER_MIDLEVEL:
+				mlcnt++;
+				break;
+			default:
+				krlcnt++;
+				break;
+			}
+		}
+		spin_unlock_irqrestore(&sdev->list_lock, flags);
+	}
+
+	ctrl_dev = &aac->pdev->dev;
+
+	dev_info(ctrl_dev, "outstanding cmd: midlevel-%d\n", mlcnt);
+	dev_info(ctrl_dev, "outstanding cmd: lowlevel-%d\n", llcnt);
+	dev_info(ctrl_dev, "outstanding cmd: error handler-%d\n", ehcnt);
+	dev_info(ctrl_dev, "outstanding cmd: firmware-%d\n", fwcnt);
+	dev_info(ctrl_dev, "outstanding cmd: kernel-%d\n", krlcnt);
+
+	return mlcnt + llcnt + ehcnt + fwcnt;
+}
+
 static int aac_eh_abort(struct scsi_cmnd* cmd)
 {
 	struct scsi_device * dev = cmd->device;
@@ -853,8 +903,6 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
 			pr_err("%s: Host adapter reset request timed out\n",
 			AAC_DRIVERNAME);
 	} else {
-		struct scsi_cmnd *command;
-		unsigned long flags;
 
 		/* Mark the assoc. FIB to not complete, eh handler does this */
 		for (count = 0;
@@ -873,41 +921,9 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
 		pr_err("%s: Host adapter reset request. SCSI hang ?\n",
 					AAC_DRIVERNAME);
 
-		count = aac_check_health(aac);
-		if (count)
-			return count;
-		/*
-		 * Wait for all commands to complete to this specific
-		 * target (block maximum 60 seconds).
-		 */
-		for (count = 60; count; --count) {
-			int active = aac->in_reset;
-
-			if (active == 0)
-			__shost_for_each_device(dev, host) {
-				spin_lock_irqsave(&dev->list_lock, flags);
-				list_for_each_entry(command, &dev->cmd_list,
-					list) {
-					if ((command != cmd) &&
-					(command->SCp.phase ==
-					AAC_OWNER_FIRMWARE)) {
-						active++;
-						break;
-					}
-				}
-				spin_unlock_irqrestore(&dev->list_lock, flags);
-				if (active)
-					break;
-
-			}
-			/*
-			 * We can exit If all the commands are complete
-			 */
-			if (active == 0)
-				return SUCCESS;
-			ssleep(1);
-		}
-		pr_err("%s: SCSI bus appears hung\n", AAC_DRIVERNAME);
+		count = get_num_of_incomplete_fibs(aac);
+		if (count == 0)
+			return SUCCESS;
 
 		/*
 		 * This adapter needs a blind reset, only do so for
-- 
2.7.4

[PATCH V2 08/19] aacraid: Print ctrl status before eh reset

[Raghava Aditya Renukunta]

Log the status of the controller before issuing a reset.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/linit.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 0a8d303..3dea438 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -827,6 +827,7 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
 	int count;
 	u32 bus, cid;
 	int ret = FAILED;
+	int status = 0;
 
 	bus = aac_logical_to_phys(scmd_channel(cmd));
 	cid = scmd_id(cmd);
@@ -921,6 +922,14 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
 		pr_err("%s: Host adapter reset request. SCSI hang ?\n",
 					AAC_DRIVERNAME);
 
+		/*
+		 * Check the health of the controller
+		 */
+		status = aac_adapter_check_health(aac);
+		if (status)
+			dev_err(&aac->pdev->dev, "Adapter health - %d\n",
+									status);
+
 		count = get_num_of_incomplete_fibs(aac);
 		if (count == 0)
 			return SUCCESS;
-- 
2.7.4

[PATCH V2 09/19] aacraid: Using single reset mask for IOP reset

[Raghava Aditya Renukunta]

The driver can now trigger IOP reset with a single reset mask. Removed
code that retrieves a reset_mask from the firmware.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/aacraid.h |  5 ++++-
 drivers/scsi/aacraid/src.c     | 16 ++--------------
 2 files changed, 6 insertions(+), 15 deletions(-)

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 3ede6de..993f134 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -2381,6 +2381,7 @@ struct revision
 #define SOFT_RESET_TIME			60
 
 
+
 struct aac_common
 {
 	/*
@@ -2491,7 +2492,9 @@ struct aac_hba_info {
 #define IOP_RESET_FW_FIB_DUMP		0x00000034
 #define IOP_RESET			0x00001000
 #define IOP_RESET_ALWAYS		0x00001001
-#define RE_INIT_ADAPTER			0x000000ee
+#define RE_INIT_ADAPTER		0x000000ee
+
+#define IOP_SRC_RESET_MASK		0x00000100
 
 /*
  *	Adapter Status Register
diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
index 2e5338d..c0e5242 100644
--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -704,22 +704,10 @@ static void aac_send_iop_reset(struct aac_dev *dev, int bled)
 				    0, 0, 0, 0, 0, 0, &var,
 				    &reset_mask, NULL, NULL, NULL);
 
-	if ((bled || var != 0x00000001) && !dev->doorbell_mask)
-		bled = -EINVAL;
-	else if (dev->doorbell_mask) {
-		reset_mask = dev->doorbell_mask;
-		bled = 0;
-		var = 0x00000001;
-	}
-
 	aac_set_intx_mode(dev);
 
-	if (!bled && (dev->supplement_adapter_info.supported_options2 &
-	    AAC_OPTION_DOORBELL_RESET)) {
-		src_writel(dev, MUnit.IDR, reset_mask);
-	} else {
-		src_writel(dev, MUnit.IDR, 0x100);
-	}
+	src_writel(dev, MUnit.IDR, IOP_SRC_RESET_MASK);
+
 	msleep(30000);
 }
 
-- 
2.7.4

[PATCH V2 10/19] aacraid: Rework IOP reset

[Raghava Aditya Renukunta]

Reworked IOP reset to remove unneeded variable and created a helper
function to notify fw of an imminent IOP reset.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/src.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
index c0e5242..e8e9178 100644
--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -694,15 +694,17 @@ static void aac_dump_fw_fib_iop_reset(struct aac_dev *dev)
 			0, 0, 0,  0, 0, 0, NULL, NULL, NULL, NULL, NULL);
 }
 
-static void aac_send_iop_reset(struct aac_dev *dev, int bled)
+static void aac_notify_fw_of_iop_reset(struct aac_dev *dev)
 {
-	u32 var, reset_mask;
+	aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS, 0, 0, 0, 0, 0, 0, NULL,
+						NULL, NULL, NULL, NULL);
+}
 
+static void aac_send_iop_reset(struct aac_dev *dev)
+{
 	aac_dump_fw_fib_iop_reset(dev);
 
-	bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
-				    0, 0, 0, 0, 0, 0, &var,
-				    &reset_mask, NULL, NULL, NULL);
+	aac_notify_fw_of_iop_reset(dev);
 
 	aac_set_intx_mode(dev);
 
@@ -742,7 +744,7 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 
 	switch (reset_type) {
 	case IOP_HWSOFT_RESET:
-		aac_send_iop_reset(dev, bled);
+		aac_send_iop_reset(dev);
 		/*
 		 * Check to see if KERNEL_UP_AND_RUNNING
 		 * Wait for the adapter to be up and running.
@@ -769,7 +771,7 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 		}
 		break;
 	default:
-		aac_send_iop_reset(dev, bled);
+		aac_send_iop_reset(dev);
 		break;
 	}
 
-- 
2.7.4

[PATCH V2 11/19] aacraid: Add periodic checks to see IOP reset status

[Raghava Aditya Renukunta]

Added function that waits with a timeout for the ctrl to be up and running
after triggering an IOP reset. Also removed 30 sec sleep as it is not
needed.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/aacraid.h |  1 +
 drivers/scsi/aacraid/src.c     | 45 ++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 44 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 993f134..829f3d8 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -2519,6 +2519,7 @@ struct aac_hba_info {
 
 #define	SELF_TEST_FAILED		0x00000004
 #define	MONITOR_PANIC			0x00000020
+#define	KERNEL_BOOTING			0x00000040
 #define	KERNEL_UP_AND_RUNNING		0x00000080
 #define	KERNEL_PANIC			0x00000100
 #define	FLASH_UPD_PENDING		0x00002000
diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
index e8e9178..67185eb 100644
--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -694,6 +694,37 @@ static void aac_dump_fw_fib_iop_reset(struct aac_dev *dev)
 			0, 0, 0,  0, 0, 0, NULL, NULL, NULL, NULL, NULL);
 }
 
+static bool aac_is_ctrl_up_and_running(struct aac_dev *dev)
+{
+	bool ctrl_up = true;
+	unsigned long status, start;
+	bool is_up = false;
+
+	start = jiffies;
+	do {
+		schedule();
+		status = src_readl(dev, MUnit.OMR);
+
+		if (status == 0xffffffff)
+			status = 0;
+
+		if (status & KERNEL_BOOTING) {
+			start = jiffies;
+			continue;
+		}
+
+		if (time_after(jiffies, start+HZ*SOFT_RESET_TIME)) {
+			ctrl_up = false;
+			break;
+		}
+
+		is_up = status & KERNEL_UP_AND_RUNNING;
+
+	} while (!is_up);
+
+	return ctrl_up;
+}
+
 static void aac_notify_fw_of_iop_reset(struct aac_dev *dev)
 {
 	aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS, 0, 0, 0, 0, 0, 0, NULL,
@@ -709,8 +740,6 @@ static void aac_send_iop_reset(struct aac_dev *dev)
 	aac_set_intx_mode(dev);
 
 	src_writel(dev, MUnit.IDR, IOP_SRC_RESET_MASK);
-
-	msleep(30000);
 }
 
 static void aac_send_hardware_soft_reset(struct aac_dev *dev)
@@ -726,6 +755,7 @@ static void aac_send_hardware_soft_reset(struct aac_dev *dev)
 static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 {
 	unsigned long status, start;
+	bool is_ctrl_up;
 
 	if (bled < 0)
 		goto invalid_out;
@@ -745,6 +775,16 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 	switch (reset_type) {
 	case IOP_HWSOFT_RESET:
 		aac_send_iop_reset(dev);
+
+		/*
+		 * Creates a delay or wait till up and running comes thru
+		 */
+		is_ctrl_up = aac_is_ctrl_up_and_running(dev);
+		if (!is_ctrl_up)
+			dev_err(&dev->pdev->dev, "IOP reset failed\n");
+		else
+			goto set_startup;
+
 		/*
 		 * Check to see if KERNEL_UP_AND_RUNNING
 		 * Wait for the adapter to be up and running.
@@ -780,6 +820,7 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 	if (src_readl(dev, MUnit.OMR) & KERNEL_PANIC)
 		return -ENODEV;
 
+set_startup:
 	if (startup_timeout < 300)
 		startup_timeout = 300;
 
-- 
2.7.4

[PATCH V2 12/19] aacraid: Rework SOFT reset code

[Raghava Aditya Renukunta]

Now the driver issues a soft reset and waits for the controller to be up
and running by periodically checking on the status of the controller
health registers. Also prevents ARC adapters from issuing soft reset if
IOP resets failed.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/src.c | 38 ++++++++++++++++++--------------------
 1 file changed, 18 insertions(+), 20 deletions(-)

diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
index 67185eb..8ed7be0 100644
--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -754,8 +754,8 @@ static void aac_send_hardware_soft_reset(struct aac_dev *dev)
 
 static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 {
-	unsigned long status, start;
 	bool is_ctrl_up;
+	int ret = 0;
 
 	if (bled < 0)
 		goto invalid_out;
@@ -785,24 +785,21 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 		else
 			goto set_startup;
 
-		/*
-		 * Check to see if KERNEL_UP_AND_RUNNING
-		 * Wait for the adapter to be up and running.
-		 * If !KERNEL_UP_AND_RUNNING issue HW Soft Reset
-		 */
-		status = src_readl(dev, MUnit.OMR);
-		if (dev->sa_firmware
-		 && !(status & KERNEL_UP_AND_RUNNING)) {
-			start = jiffies;
-			do {
-				status = src_readl(dev, MUnit.OMR);
-				if (time_after(jiffies,
-				 start+HZ*SOFT_RESET_TIME)) {
-					aac_send_hardware_soft_reset(dev);
-					start = jiffies;
-				}
-			} while (!(status & KERNEL_UP_AND_RUNNING));
+		if (!dev->sa_firmware) {
+			ret = -ENODEV;
+			goto out;
 		}
+
+		aac_send_hardware_soft_reset(dev);
+		dev->msi_enabled = 0;
+
+		is_ctrl_up = aac_is_ctrl_up_and_running(dev);
+		if (!is_ctrl_up) {
+			dev_err(&dev->pdev->dev, "SOFT reset failed\n");
+			ret = -ENODEV;
+			goto out;
+		}
+
 		break;
 	case HW_SOFT_RESET:
 		if (dev->sa_firmware) {
@@ -818,13 +815,14 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 invalid_out:
 
 	if (src_readl(dev, MUnit.OMR) & KERNEL_PANIC)
-		return -ENODEV;
+		ret = -ENODEV;
 
 set_startup:
 	if (startup_timeout < 300)
 		startup_timeout = 300;
 
-	return 0;
+out:
+	return ret;
 }
 
 /**
-- 
2.7.4

[PATCH V2 13/19] aacraid: Rework aac_src_restart

[Raghava Aditya Renukunta]

Removed switch case and replaced with if mask checks. Moved KERNEL_PANIC
check to when bled is less than 0.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/src.c | 34 ++++++++++++----------------------
 1 file changed, 12 insertions(+), 22 deletions(-)

diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
index 8ed7be0..10a589b 100644
--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -772,8 +772,7 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 
 	dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
 
-	switch (reset_type) {
-	case IOP_HWSOFT_RESET:
+	if (reset_type & HW_IOP_RESET) {
 		aac_send_iop_reset(dev);
 
 		/*
@@ -784,12 +783,14 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 			dev_err(&dev->pdev->dev, "IOP reset failed\n");
 		else
 			goto set_startup;
+	}
 
-		if (!dev->sa_firmware) {
-			ret = -ENODEV;
-			goto out;
-		}
+	if (!dev->sa_firmware) {
+		ret = -ENODEV;
+		goto out;
+	}
 
+	if (reset_type & HW_SOFT_RESET) {
 		aac_send_hardware_soft_reset(dev);
 		dev->msi_enabled = 0;
 
@@ -799,30 +800,19 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 			ret = -ENODEV;
 			goto out;
 		}
-
-		break;
-	case HW_SOFT_RESET:
-		if (dev->sa_firmware) {
-			aac_send_hardware_soft_reset(dev);
-			aac_set_intx_mode(dev);
-		}
-		break;
-	default:
-		aac_send_iop_reset(dev);
-		break;
 	}
 
-invalid_out:
-
-	if (src_readl(dev, MUnit.OMR) & KERNEL_PANIC)
-		ret = -ENODEV;
-
 set_startup:
 	if (startup_timeout < 300)
 		startup_timeout = 300;
 
 out:
 	return ret;
+
+invalid_out:
+	if (src_readl(dev, MUnit.OMR) & KERNEL_PANIC)
+		ret = -ENODEV;
+goto out;
 }
 
 /**
-- 
2.7.4

[PATCH V2 14/19] aacraid: Use correct function to get ctrl health

[Raghava Aditya Renukunta]

The command thread checks the ctrl health periodically before sending
updates to the controller. The function that it uses is aac_check_health
which does more than get the health status.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/commsup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 3299012..f26543a 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -2476,7 +2476,7 @@ int aac_command_thread(void *data)
 		if ((time_before(next_check_jiffies,next_jiffies))
 		 && ((difference = next_check_jiffies - jiffies) <= 0)) {
 			next_check_jiffies = next_jiffies;
-			if (aac_check_health(dev) == 0) {
+			if (aac_adapter_check_health(dev) == 0) {
 				difference = ((long)(unsigned)check_interval)
 					   * HZ;
 				next_check_jiffies = jiffies + difference;
@@ -2489,7 +2489,7 @@ int aac_command_thread(void *data)
 			int ret;
 
 			/* Don't even try to talk to adapter if its sick */
-			ret = aac_check_health(dev);
+			ret = aac_adapter_check_health(dev);
 			if (ret || !dev->queues)
 				break;
 			next_check_jiffies = jiffies
-- 
2.7.4

[PATCH V2 15/19] aacraid: Make sure ioctl returns on controller reset

[Raghava Aditya Renukunta]

Made sure that ioctl commands return in case of a controller reset.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>

---
Changes in V2:
Removed incorrect up
Cleared wait flag once event is received not before

 drivers/scsi/aacraid/commsup.c | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index f26543a..7bb0253 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -803,11 +803,11 @@ int aac_hba_send(u8 command, struct fib *fibptr, fib_callback callback,
 		if (aac_check_eeh_failure(dev))
 			return -EFAULT;
 
-		/* Only set for first known interruptable command */
-		if (down_interruptible(&fibptr->event_wait)) {
+		fibptr->flags |= FIB_CONTEXT_FLAG_WAIT;
+		if (down_interruptible(&fibptr->event_wait))
 			fibptr->done = 2;
-			up(&fibptr->event_wait);
-		}
+		fibptr->flags &= ~(FIB_CONTEXT_FLAG_WAIT);
+
 		spin_lock_irqsave(&fibptr->event_lock, flags);
 		if ((fibptr->done == 0) || (fibptr->done == 2)) {
 			fibptr->done = 2; /* Tell interrupt we aborted */
@@ -1514,6 +1514,7 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
 	int jafo = 0;
 	int bled;
 	u64 dmamask;
+	int num_of_fibs = 0;
 
 	/*
 	 * Assumptions:
@@ -1547,10 +1548,20 @@ static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
 	/*
 	 *	Loop through the fibs, close the synchronous FIBS
 	 */
-	for (retval = 1, index = 0; index < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); index++) {
+	retval = 1;
+	num_of_fibs = aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB;
+	for (index = 0; index <  num_of_fibs; index++) {
+
 		struct fib *fib = &aac->fibs[index];
-		if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) &&
-		  (fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected))) {
+		__le32 XferState = fib->hw_fib_va->header.XferState;
+		bool is_response_expected = false;
+
+		if (!(XferState & cpu_to_le32(NoResponseExpected | Async)) &&
+		   (XferState & cpu_to_le32(ResponseExpected)))
+			is_response_expected = true;
+
+		if (is_response_expected
+		  || fib->flags & FIB_CONTEXT_FLAG_WAIT) {
 			unsigned long flagv;
 			spin_lock_irqsave(&fib->event_lock, flagv);
 			up(&fib->event_wait);
-- 
2.7.4

[PATCH V2 16/19] aacraid: Enable ctrl reset for both hba and arc

[Raghava Aditya Renukunta]

Make sure that IOP and SOFT reset are enabled for both for both
arc and hba1000 controllers.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/linit.c | 77 +++++++++++++++++++++++---------------------
 1 file changed, 40 insertions(+), 37 deletions(-)

diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 3dea438..d933d2f 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -828,6 +828,11 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
 	u32 bus, cid;
 	int ret = FAILED;
 	int status = 0;
+	__le32 supported_options2 = 0;
+	bool is_mu_reset;
+	bool is_ignore_reset;
+	bool is_doorbell_reset;
+
 
 	bus = aac_logical_to_phys(scmd_channel(cmd));
 	cid = scmd_id(cmd);
@@ -900,9 +905,9 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
 			msleep(1000);
 		}
 
-		if (ret != SUCCESS)
-			pr_err("%s: Host adapter reset request timed out\n",
-			AAC_DRIVERNAME);
+		if (ret == SUCCESS)
+			goto out;
+
 	} else {
 
 		/* Mark the assoc. FIB to not complete, eh handler does this */
@@ -918,44 +923,42 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
 				cmd->SCp.phase = AAC_OWNER_ERROR_HANDLER;
 			}
 		}
+	}
 
-		pr_err("%s: Host adapter reset request. SCSI hang ?\n",
-					AAC_DRIVERNAME);
+	pr_err("%s: Host adapter reset request. SCSI hang ?\n", AAC_DRIVERNAME);
+
+	/*
+	 * Check the health of the controller
+	 */
+	status = aac_adapter_check_health(aac);
+	if (status)
+		dev_err(&aac->pdev->dev, "Adapter health - %d\n", status);
+
+	count = get_num_of_incomplete_fibs(aac);
+	if (count == 0)
+		return SUCCESS;
 
-		/*
-		 * Check the health of the controller
-		 */
-		status = aac_adapter_check_health(aac);
-		if (status)
-			dev_err(&aac->pdev->dev, "Adapter health - %d\n",
-									status);
-
-		count = get_num_of_incomplete_fibs(aac);
-		if (count == 0)
-			return SUCCESS;
-
-		/*
-		 * This adapter needs a blind reset, only do so for
-		 * Adapters that support a register, instead of a commanded,
-		 * reset.
-		 */
-		if (((aac->supplement_adapter_info.supported_options2 &
-			  AAC_OPTION_MU_RESET) ||
-			  (aac->supplement_adapter_info.supported_options2 &
-			  AAC_OPTION_DOORBELL_RESET)) &&
-			  aac_check_reset &&
-			  ((aac_check_reset != 1) ||
-			   !(aac->supplement_adapter_info.supported_options2 &
-			    AAC_OPTION_IGNORE_RESET))) {
-			/* Bypass wait for command quiesce */
-			aac_reset_adapter(aac, 2, IOP_HWSOFT_RESET);
-		}
-		ret = SUCCESS;
-	}
 	/*
-	 * Cause an immediate retry of the command with a ten second delay
-	 * after successful tur
+	 * Check if reset is supported by the firmware
 	 */
+	supported_options2 = aac->supplement_adapter_info.supported_options2;
+	is_mu_reset = supported_options2 & AAC_OPTION_MU_RESET;
+	is_doorbell_reset = supported_options2 & AAC_OPTION_DOORBELL_RESET;
+	is_ignore_reset = supported_options2 & AAC_OPTION_IGNORE_RESET;
+	/*
+	 * This adapter needs a blind reset, only do so for
+	 * Adapters that support a register, instead of a commanded,
+	 * reset.
+	 */
+	if ((is_mu_reset || is_doorbell_reset)
+	 && aac_check_reset
+	 && (aac_check_reset != -1 || !is_ignore_reset)) {
+		/* Bypass wait for command quiesce */
+		aac_reset_adapter(aac, 2, IOP_HWSOFT_RESET);
+	}
+	ret = SUCCESS;
+
+out:
 	return ret;
 }
 
-- 
2.7.4

[PATCH V2 17/19] aacraid : Add reset debugging statements

[Raghava Aditya Renukunta]

Added info and error messages in controller reset function to log
information about the status of the IOP/SOFT reset.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/src.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/aacraid/src.c b/drivers/scsi/aacraid/src.c
index 10a589b..5367d3f 100644
--- a/drivers/scsi/aacraid/src.c
+++ b/drivers/scsi/aacraid/src.c
@@ -761,8 +761,7 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 		goto invalid_out;
 
 	if (bled)
-		pr_err("%s%d: adapter kernel panic'd %x.\n",
-				dev->name, dev->id, bled);
+		dev_err(&dev->pdev->dev, "adapter kernel panic'd %x.\n", bled);
 
 	/*
 	 * When there is a BlinkLED, IOP_RESET has not effect
@@ -772,7 +771,10 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 
 	dev->a_ops.adapter_enable_int = aac_src_disable_interrupt;
 
+	dev_err(&dev->pdev->dev, "Controller reset type is %d\n", reset_type);
+
 	if (reset_type & HW_IOP_RESET) {
+		dev_info(&dev->pdev->dev, "Issuing IOP reset\n");
 		aac_send_iop_reset(dev);
 
 		/*
@@ -781,16 +783,20 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 		is_ctrl_up = aac_is_ctrl_up_and_running(dev);
 		if (!is_ctrl_up)
 			dev_err(&dev->pdev->dev, "IOP reset failed\n");
-		else
+		else {
+			dev_info(&dev->pdev->dev, "IOP reset succeded\n");
 			goto set_startup;
+		}
 	}
 
 	if (!dev->sa_firmware) {
+		dev_err(&dev->pdev->dev, "ARC Reset attempt failed\n");
 		ret = -ENODEV;
 		goto out;
 	}
 
 	if (reset_type & HW_SOFT_RESET) {
+		dev_info(&dev->pdev->dev, "Issuing SOFT reset\n");
 		aac_send_hardware_soft_reset(dev);
 		dev->msi_enabled = 0;
 
@@ -799,7 +805,8 @@ static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
 			dev_err(&dev->pdev->dev, "SOFT reset failed\n");
 			ret = -ENODEV;
 			goto out;
-		}
+		} else
+			dev_info(&dev->pdev->dev, "SOFT reset succeded\n");
 	}
 
 set_startup:
-- 
2.7.4

[PATCH V2 18/19] aacraid: Remove reference to Series-9

[Raghava Aditya Renukunta]

Remove reference to Series-9 HBA and created arc ctrl check function.

Signed-off-by: Prasad B Munirathnam <prasad.munirathnam@microsemi.com>
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/aacraid.h  | 13 ++++++++++++-
 drivers/scsi/aacraid/comminit.c | 18 ++++--------------
 drivers/scsi/aacraid/commsup.c  |  5 +----
 drivers/scsi/aacraid/linit.c    |  9 ++-------
 4 files changed, 19 insertions(+), 26 deletions(-)

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 829f3d8..58ccd2a 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -424,7 +424,6 @@ struct aac_ciss_identify_pd {
 #define PMC_DEVICE_S6	0x28b
 #define PMC_DEVICE_S7	0x28c
 #define PMC_DEVICE_S8	0x28d
-#define PMC_DEVICE_S9	0x28f
 
 #define aac_phys_to_logical(x)  ((x)+1)
 #define aac_logical_to_phys(x)  ((x)?(x)-1:0)
@@ -2684,6 +2683,18 @@ 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);
+
+static inline int aac_is_src(struct aac_dev *dev)
+{
+	u16 device = dev->pdev->device;
+
+	if (device == PMC_DEVICE_S6 ||
+		device == PMC_DEVICE_S7 ||
+		device == PMC_DEVICE_S8)
+		return 1;
+	return 0;
+}
+
 char * get_container_type(unsigned type);
 extern int numacb;
 extern char aac_driver_version[];
diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index 1151505..9ee025b 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -53,11 +53,8 @@ static inline int aac_is_msix_mode(struct aac_dev *dev)
 {
 	u32 status = 0;
 
-	if (dev->pdev->device == PMC_DEVICE_S6 ||
-		dev->pdev->device == PMC_DEVICE_S7 ||
-		dev->pdev->device == PMC_DEVICE_S8) {
+	if (aac_is_src(dev))
 		status = src_readl(dev, MUnit.OMR);
-	}
 	return (status & AAC_INT_MODE_MSIX);
 }
 
@@ -325,9 +322,7 @@ int aac_send_shutdown(struct aac_dev * dev)
 	/* FIB should be freed only after getting the response from the F/W */
 	if (status != -ERESTARTSYS)
 		aac_fib_free(fibctx);
-	if ((dev->pdev->device == PMC_DEVICE_S7 ||
-	     dev->pdev->device == PMC_DEVICE_S8 ||
-	     dev->pdev->device == PMC_DEVICE_S9) &&
+	if (aac_is_src(dev) &&
 	     dev->msi_enabled)
 		aac_set_intx_mode(dev);
 	return status;
@@ -583,9 +578,7 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev)
 		dev->max_fib_size = status[1] & 0xFFE0;
 		host->sg_tablesize = status[2] >> 16;
 		dev->sg_tablesize = status[2] & 0xFFFF;
-		if (dev->pdev->device == PMC_DEVICE_S7 ||
-		    dev->pdev->device == PMC_DEVICE_S8 ||
-		    dev->pdev->device == PMC_DEVICE_S9) {
+		if (aac_is_src(dev)) {
 			if (host->can_queue > (status[3] >> 16) -
 					AAC_NUM_MGT_FIB)
 				host->can_queue = (status[3] >> 16) -
@@ -604,10 +597,7 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev)
 			pr_warn("numacb=%d ignored\n", numacb);
 	}
 
-	if (dev->pdev->device == PMC_DEVICE_S6 ||
-	    dev->pdev->device == PMC_DEVICE_S7 ||
-	    dev->pdev->device == PMC_DEVICE_S8 ||
-	    dev->pdev->device == PMC_DEVICE_S9)
+	if (aac_is_src(dev))
 		aac_define_int_mode(dev);
 	/*
 	 *	Ok now init the communication subsystem
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 7bb0253..1a262c5 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -2592,10 +2592,7 @@ void aac_free_irq(struct aac_dev *dev)
 	int cpu;
 
 	cpu = cpumask_first(cpu_online_mask);
-	if (dev->pdev->device == PMC_DEVICE_S6 ||
-	    dev->pdev->device == PMC_DEVICE_S7 ||
-	    dev->pdev->device == PMC_DEVICE_S8 ||
-	    dev->pdev->device == PMC_DEVICE_S9) {
+	if (aac_is_src(dev)) {
 		if (dev->max_msix > 1) {
 			for (i = 0; i < dev->max_msix; i++)
 				free_irq(pci_irq_vector(dev->pdev, i),
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index d933d2f..0f277df 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -1416,10 +1416,7 @@ static void __aac_shutdown(struct aac_dev * aac)
 		kthread_stop(aac->thread);
 	}
 	aac_adapter_disable_int(aac);
-	if (aac->pdev->device == PMC_DEVICE_S6 ||
-	    aac->pdev->device == PMC_DEVICE_S7 ||
-	    aac->pdev->device == PMC_DEVICE_S8 ||
-	    aac->pdev->device == PMC_DEVICE_S9) {
+	if (aac_is_src(aac)) {
 		if (aac->max_msix > 1) {
 			for (i = 0; i < aac->max_msix; i++) {
 				free_irq(pci_irq_vector(aac->pdev, i),
@@ -1684,9 +1681,7 @@ static int aac_acquire_resources(struct aac_dev *dev)
 	aac_adapter_enable_int(dev);
 
 
-	if ((dev->pdev->device == PMC_DEVICE_S7 ||
-	     dev->pdev->device == PMC_DEVICE_S8 ||
-	     dev->pdev->device == PMC_DEVICE_S9))
+	if (aac_is_src(dev))
 		aac_define_int_mode(dev);
 
 	if (dev->msi_enabled)
-- 
2.7.4

[PATCH V2 19/19] aacraid: Update driver version to 50834

[Raghava Aditya Renukunta]

Update the driver version to 50834

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>

---
Changes in V2:
None

 drivers/scsi/aacraid/aacraid.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 58ccd2a..0995265 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -97,7 +97,7 @@ enum {
 #define	PMC_GLOBAL_INT_BIT0		0x00000001
 
 #ifndef AAC_DRIVER_BUILD
-# define AAC_DRIVER_BUILD 50792
+# define AAC_DRIVER_BUILD 50834
 # define AAC_DRIVER_BRANCH "-custom"
 #endif
 #define MAXIMUM_NUM_CONTAINERS	32
-- 
2.7.4

Re: [PATCH V2 00/19] aacraid: Patchset with reset rework and misc fixes

[Martin K. Petersen]

Raghava,

> This patchset primarily focuses on tweaking and hardening the
> controller reset support for both ARC and HBA1000 devices. Now the
> driver can only reset the controller thru eh reset. Included a srb
> memory fix and pci dma allocation fix.

Applied to 4.13/scsi-queue, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering