[PATCH 1/8] megaraid_sas: Remove MSI-X black list, use MFI_REG_STATE

[adam radford <aradford@xxxxxxxxx>]

James/linux-scsi,

This patch for megaraid_sas removes the MSI-X black list and uses
MFI_REG_STATE.ready.msiEnable instead.

Signed-off-by: Adam Radford <aradford@xxxxxxxxx>

diff -Naur scsi-misc/drivers/scsi/megaraid/megaraid_sas_base.c
scsi-misc.new/drivers/scsi/megaraid/megaraid_sas_base.c
--- scsi-misc/drivers/scsi/megaraid/megaraid_sas_base.c	2011-05-11
14:57:23.654429789 -0700
+++ scsi-misc.new/drivers/scsi/megaraid/megaraid_sas_base.c	2011-05-11
14:58:57.521366593 -0700
@@ -3454,7 +3454,7 @@
 {
 	u32 max_sectors_1;
 	u32 max_sectors_2;
-	u32 tmp_sectors;
+	u32 tmp_sectors, msix_enable;
 	struct megasas_register_set __iomem *reg_set;
 	struct megasas_ctrl_info *ctrl_info;
 	unsigned long bar_list;
@@ -3507,6 +3507,13 @@
 	if (megasas_transition_to_ready(instance))
 		goto fail_ready_state;

+	/* Check if MSI-X is supported while in ready state */
+	msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
+		       0x4000000) >> 0x1a;
+	if (msix_enable && !msix_disable &&
+	    !pci_enable_msix(instance->pdev, &instance->msixentry, 1))
+		instance->msi_flag = 1;
+
 	/* Get operational params, sge flags, send init cmd to controller */
 	if (instance->instancet->init_adapter(instance))
 		goto fail_init_adapter;
@@ -4076,14 +4083,6 @@
 	else
 		INIT_WORK(&instance->work_init, process_fw_state_change_wq);

-	/* Try to enable MSI-X */
-	if ((instance->pdev->device != PCI_DEVICE_ID_LSI_SAS1078R) &&
-	    (instance->pdev->device != PCI_DEVICE_ID_LSI_SAS1078DE) &&
-	    (instance->pdev->device != PCI_DEVICE_ID_LSI_VERDE_ZCR) &&
-	    !msix_disable && !pci_enable_msix(instance->pdev,
-					      &instance->msixentry, 1))
-		instance->msi_flag = 1;
-
 	/*
 	 * Initialize MFI Firmware
 	 */
@@ -4332,10 +4331,6 @@
 	if (megasas_set_dma_mask(pdev))
 		goto fail_set_dma_mask;

-	/* Now re-enable MSI-X */
-	if (instance->msi_flag)
-		pci_enable_msix(instance->pdev, &instance->msixentry, 1);
-
 	/*
 	 * Initialize MFI Firmware
 	 */
@@ -4348,6 +4343,10 @@
 	if (megasas_transition_to_ready(instance))
 		goto fail_ready_state;

+	/* Now re-enable MSI-X */
+	if (instance->msi_flag)
+		pci_enable_msix(instance->pdev, &instance->msixentry, 1);
+
 	switch (instance->pdev->device) {
 	case PCI_DEVICE_ID_LSI_FUSION:
 	{

Attachment: megaraid_sas.patch1
Description: Binary data