[Devel] [PATCH RH8 3/4] scsi: aacraid: resurrect correct arc ctrl checks for Series-6

[Pavel Tikhomirov]

From: Konstantin Khorenko <khorenko at virtuozzo.com>

This partially reverts ms commit
395e5df79a95 ("scsi: aacraid: Remove reference to Series-9")

The patch above not anly drops Series-9 cards checks but also
changes logic for Series-6 controllers which lead to controller
hungs/resets under high io load.

So revert original arc ctrl checks for Series-6 controllers.

https://jira.sw.ru/browse/PSBM-95736

Signed-off-by: Konstantin Khorenko <khorenko at virtuozzo.com>

VZ8 rebase note: this patch didn't hit either mainstream or rhel8 or
ubuntu, probably because the device is quiet old, but nevertheles the
patch looks right and acronis possibly still needs this for aacraid
cards.

https://jira.sw.ru/browse/PSBM-127846
(cherry-picked from rh7 commit d3d655f570c8 ("scsi: aacraid: resurrect
correct arc ctrl checks for Series-6"))
Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
---
 drivers/scsi/aacraid/aacraid.h  | 11 -----------
 drivers/scsi/aacraid/comminit.c | 14 ++++++++++----
 drivers/scsi/aacraid/commsup.c  |  4 +++-
 drivers/scsi/aacraid/linit.c    |  7 +++++--
 4 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 29bf1e60f542..54f5b6df6d25 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -2737,17 +2737,6 @@ 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;
-}
-
 static inline int aac_supports_2T(struct aac_dev *dev)
 {
 	return (dev->adapter_info.options & AAC_OPT_NEW_COMM_64);
diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index 0dc7b5a4fea2..5a49ed5ce7d5 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -55,7 +55,9 @@ static inline int aac_is_msix_mode(struct aac_dev *dev)
 {
 	u32 status = 0;
 
-	if (aac_is_src(dev))
+	if (dev->pdev->device == PMC_DEVICE_S6 ||
+	    dev->pdev->device == PMC_DEVICE_S7 ||
+	    dev->pdev->device == PMC_DEVICE_S8)
 		status = src_readl(dev, MUnit.OMR);
 	return (status & AAC_INT_MODE_MSIX);
 }
@@ -363,7 +365,8 @@ 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 (aac_is_src(dev) &&
+	if ((dev->pdev->device == PMC_DEVICE_S7 ||
+	     dev->pdev->device == PMC_DEVICE_S8) &&
 	     dev->msi_enabled)
 		aac_set_intx_mode(dev);
 	return status;
@@ -619,7 +622,8 @@ 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 (aac_is_src(dev)) {
+		if (dev->pdev->device == PMC_DEVICE_S7 ||
+		    dev->pdev->device == PMC_DEVICE_S8) {
 			if (host->can_queue > (status[3] >> 16) -
 					AAC_NUM_MGT_FIB)
 				host->can_queue = (status[3] >> 16) -
@@ -638,7 +642,9 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev)
 			pr_warn("numacb=%d ignored\n", numacb);
 	}
 
-	if (aac_is_src(dev))
+	if (dev->pdev->device == PMC_DEVICE_S6 ||
+	    dev->pdev->device == PMC_DEVICE_S7 ||
+	    dev->pdev->device == PMC_DEVICE_S8)
 		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 d62ddd63f4fe..87b11c85b742 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -2589,7 +2589,9 @@ void aac_free_irq(struct aac_dev *dev)
 	int cpu;
 
 	cpu = cpumask_first(cpu_online_mask);
-	if (aac_is_src(dev)) {
+	if (dev->pdev->device == PMC_DEVICE_S6 ||
+	    dev->pdev->device == PMC_DEVICE_S7 ||
+	    dev->pdev->device == PMC_DEVICE_S8) {
 		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 ab0f6d51b1fe..7750f7c01556 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -1501,7 +1501,9 @@ static void __aac_shutdown(struct aac_dev * aac)
 
 	aac_adapter_disable_int(aac);
 
-	if (aac_is_src(aac)) {
+	if (aac->pdev->device == PMC_DEVICE_S6 ||
+	    aac->pdev->device == PMC_DEVICE_S7 ||
+	    aac->pdev->device == PMC_DEVICE_S8) {
 		if (aac->max_msix > 1) {
 			for (i = 0; i < aac->max_msix; i++) {
 				free_irq(pci_irq_vector(aac->pdev, i),
@@ -1777,7 +1779,8 @@ static int aac_acquire_resources(struct aac_dev *dev)
 	aac_adapter_enable_int(dev);
 
 
-	if (aac_is_src(dev))
+	if (dev->pdev->device == PMC_DEVICE_S7 ||
+	    dev->pdev->device == PMC_DEVICE_S8)
 		aac_define_int_mode(dev);
 
 	if (dev->msi_enabled)
-- 
2.31.1