scsi: smartpqi: Add support for long firmware version

Add support for new "long" firmware version which requires minor driver
changes to expose.

Link: https://lore.kernel.org/r/161549374508.25025.15467221395888158022.stgit@brunhildaReviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Mike McGowen <mike.mcgowen@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/smartpqi/smartpqi.h

@@ -1226,7 +1226,7 @@ struct pqi_event {
 struct pqi_ctrl_info {
 	unsigned int	ctrl_id;
 	struct pci_dev	*pci_dev;
-	char		firmware_version[11];
+	char		firmware_version[32];
 	char		serial_number[17];
 	char		model[17];
 	char		vendor[9];
@@ -1404,7 +1404,7 @@ enum pqi_ctrl_mode {
 struct bmic_identify_controller {
 	u8	configured_logical_drive_count;
 	__le32	configuration_signature;
-	u8	firmware_version[4];
+	u8	firmware_version_short[4];
 	u8	reserved[145];
 	__le16	extended_logical_unit_count;
 	u8	reserved1[34];
@@ -1412,11 +1412,17 @@ struct bmic_identify_controller {
 	u8	reserved2[8];
 	u8	vendor_id[8];
 	u8	product_id[16];
-	u8	reserved3[68];
+	u8	reserved3[62];
+	__le32	extra_controller_flags;
+	u8	reserved4[2];
 	u8	controller_mode;
-	u8	reserved4[32];
+	u8	spare_part_number[32];
+	u8	firmware_version_long[32];
 };
 
+/* constants for extra_controller_flags field of bmic_identify_controller */
+#define BMIC_IDENTIFY_EXTRA_FLAGS_LONG_FW_VERSION_SUPPORTED	0x20000000
+
 struct bmic_sense_subsystem_info {
 	u8	reserved[44];
 	u8	ctrl_serial_number[16];

drivers/scsi/smartpqi/smartpqi_init.c

@@ -7228,13 +7228,24 @@ static int pqi_get_ctrl_product_details(struct pqi_ctrl_info *ctrl_info)
 	if (rc)
 		goto out;
 
-	memcpy(ctrl_info->firmware_version, identify->firmware_version,
-		sizeof(identify->firmware_version));
-	ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0';
-	snprintf(ctrl_info->firmware_version +
-		strlen(ctrl_info->firmware_version),
-		sizeof(ctrl_info->firmware_version),
-		"-%u", get_unaligned_le16(&identify->firmware_build_number));
+	if (get_unaligned_le32(&identify->extra_controller_flags) &
+		BMIC_IDENTIFY_EXTRA_FLAGS_LONG_FW_VERSION_SUPPORTED) {
+		memcpy(ctrl_info->firmware_version,
+			identify->firmware_version_long,
+			sizeof(identify->firmware_version_long));
+	} else {
+		memcpy(ctrl_info->firmware_version,
+			identify->firmware_version_short,
+			sizeof(identify->firmware_version_short));
+		ctrl_info->firmware_version
+			[sizeof(identify->firmware_version_short)] = '\0';
+		snprintf(ctrl_info->firmware_version +
+			strlen(ctrl_info->firmware_version),
+			sizeof(ctrl_info->firmware_version) -
+			sizeof(identify->firmware_version_short),
+			"-%u",
+			get_unaligned_le16(&identify->firmware_build_number));
+	}
 
 	memcpy(ctrl_info->model, identify->product_id,
 		sizeof(identify->product_id));
@@ -9612,13 +9623,23 @@ static void __attribute__((unused)) verify_structures(void)
 	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
 		configuration_signature) != 1);
 	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
-		firmware_version) != 5);
+		firmware_version_short) != 5);
 	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
 		extended_logical_unit_count) != 154);
 	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
 		firmware_build_number) != 190);
+	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
+		vendor_id) != 200);
+	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
+		product_id) != 208);
+	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
+		extra_controller_flags) != 286);
 	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
 		controller_mode) != 292);
+	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
+		spare_part_number) != 293);
+	BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
+		firmware_version_long) != 325);
 
 	BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
 		phys_bay_in_box) != 115);