accel/habanalabs: add support for Gaudi2C device

Gaudi2 with PCI revision ID with the value of '3' represents Gaudi2C
device and should be detected and initialized as Gaudi2.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

Author: ogabbay

drivers/accel/habanalabs/common/device.c

@@ -853,6 +853,9 @@ static int device_early_init(struct hl_device *hdev)
 		gaudi2_set_asic_funcs(hdev);
 		strscpy(hdev->asic_name, "GAUDI2B", sizeof(hdev->asic_name));
 		break;
+	case ASIC_GAUDI2C:
+		gaudi2_set_asic_funcs(hdev);
+		strscpy(hdev->asic_name, "GAUDI2C", sizeof(hdev->asic_name));
 		break;
 	default:
 		dev_err(hdev->dev, "Unrecognized ASIC type %d\n",

drivers/accel/habanalabs/common/habanalabs.h

@@ -1262,6 +1262,7 @@ struct hl_dec {
  * @ASIC_GAUDI_SEC: Gaudi secured device (HL-2000).
  * @ASIC_GAUDI2: Gaudi2 device.
  * @ASIC_GAUDI2B: Gaudi2B device.
+ * @ASIC_GAUDI2C: Gaudi2C device.
  */
 enum hl_asic_type {
 	ASIC_INVALID,
@@ -1270,6 +1271,7 @@ enum hl_asic_type {
 	ASIC_GAUDI_SEC,
 	ASIC_GAUDI2,
 	ASIC_GAUDI2B,
+	ASIC_GAUDI2C,
 };
 
 struct hl_cs_parser;

drivers/accel/habanalabs/common/habanalabs_drv.c

@@ -141,6 +141,9 @@ static enum hl_asic_type get_asic_type(struct hl_device *hdev)
 		case REV_ID_B:
 			asic_type = ASIC_GAUDI2B;
 			break;
+		case REV_ID_C:
+			asic_type = ASIC_GAUDI2C;
+			break;
 		default:
 			break;
 		}

drivers/accel/habanalabs/common/mmu/mmu.c

@@ -596,6 +596,7 @@ int hl_mmu_if_set_funcs(struct hl_device *hdev)
 		break;
 	case ASIC_GAUDI2:
 	case ASIC_GAUDI2B:
+	case ASIC_GAUDI2C:
 		/* MMUs in Gaudi2 are always host resident */
 		hl_mmu_v2_hr_set_funcs(hdev, &hdev->mmu_func[MMU_HR_PGT]);
 		break;

drivers/accel/habanalabs/common/sysfs.c

@@ -251,6 +251,9 @@ static ssize_t device_type_show(struct device *dev,
 	case ASIC_GAUDI2B:
 		str = "GAUDI2B";
 		break;
+	case ASIC_GAUDI2C:
+		str = "GAUDI2C";
+		break;
 	default:
 		dev_err(hdev->dev, "Unrecognized ASIC type %d\n",
 				hdev->asic_type);

drivers/accel/habanalabs/include/hw_ip/pci/pci_general.h

@@ -25,6 +25,7 @@ enum hl_revision_id {
 	REV_ID_INVALID				= 0x00,
 	REV_ID_A				= 0x01,
 	REV_ID_B				= 0x02,
+	REV_ID_C				= 0x03
 };
 
 #endif /* INCLUDE_PCI_GENERAL_H_ */