drm/amdgpu: Optimize the asic type fix code

Use a new struct array to define the asic information which
asic type needs to be fixed.

Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: Ma Jun

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

@@ -2041,6 +2041,14 @@ static const struct pci_device_id pciidlist[] = {
 
 MODULE_DEVICE_TABLE(pci, pciidlist);
 
+static const struct amdgpu_asic_type_quirk asic_type_quirks[] = {
+	/* differentiate between P10 and P11 asics with the same DID */
+	{0x67FF, 0xE3, CHIP_POLARIS10},
+	{0x67FF, 0xE7, CHIP_POLARIS10},
+	{0x67FF, 0xF3, CHIP_POLARIS10},
+	{0x67FF, 0xF7, CHIP_POLARIS10},
+};
+
 static const struct drm_driver amdgpu_kms_driver;
 
 static void amdgpu_get_secondary_funcs(struct amdgpu_device *adev)
@@ -2083,6 +2091,22 @@ static void amdgpu_init_debug_options(struct amdgpu_device *adev)
 	}
 }
 
+static unsigned long amdgpu_fix_asic_type(struct pci_dev *pdev, unsigned long flags)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(asic_type_quirks); i++) {
+		if (pdev->device == asic_type_quirks[i].device &&
+			pdev->revision == asic_type_quirks[i].revision) {
+				flags &= ~AMD_ASIC_MASK;
+				flags |= asic_type_quirks[i].type;
+				break;
+			}
+	}
+
+	return flags;
+}
+
 static int amdgpu_pci_probe(struct pci_dev *pdev,
 			    const struct pci_device_id *ent)
 {
@@ -2110,15 +2134,8 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
 			 "See modparam exp_hw_support\n");
 		return -ENODEV;
 	}
-	/* differentiate between P10 and P11 asics with the same DID */
-	if (pdev->device == 0x67FF &&
-	    (pdev->revision == 0xE3 ||
-	     pdev->revision == 0xE7 ||
-	     pdev->revision == 0xF3 ||
-	     pdev->revision == 0xF7)) {
-		flags &= ~AMD_ASIC_MASK;
-		flags |= CHIP_POLARIS10;
-	}
+
+	flags = amdgpu_fix_asic_type(pdev, flags);
 
 	/* Due to hardware bugs, S/G Display on raven requires a 1:1 IOMMU mapping,
 	 * however, SME requires an indirect IOMMU mapping because the encryption

include/drm/amd_asic_type.h

@@ -68,4 +68,9 @@ enum amd_asic_type {
 
 extern const char *amdgpu_asic_name[];
 
+struct amdgpu_asic_type_quirk {
+	unsigned short device;	/* PCI device ID */
+	u8 revision;	/* revision ID */
+	unsigned short type;	/* real ASIC type */
+};
 #endif /*__AMD_ASIC_TYPE_H__ */