[PATCH 4/4] drm/amdgpu: Access the FRU on Aldebaran

[Chen, Guchun]

[Public]

Hi Kent,

+
+	if (adev->asic_type == CHIP_ALDEBARAN)
+		offset = 0;
 
 	if (!is_fru_eeprom_supported(adev))

I prefer to put 'adev->asic_type == CHIP_ALDEBARAN' after calling is_fru_eeprom_supported to make code logic cleaner. Without FRU support, we should do nothing.

Regards,
Guchun

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Kent Russell
Sent: Friday, December 17, 2021 11:32 PM
To: amd-gfx at lists.freedesktop.org
Cc: Russell, Kent <Kent.Russell at amd.com>
Subject: [PATCH 4/4] drm/amdgpu: Access the FRU on Aldebaran

This is supported, although the offset is different from VG20, so fix that with a variable and enable getting the product name and serial number from the FRU. Do this for all SKUs since all SKUs have the FRU

Signed-off-by: Kent Russell <kent.russell at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
index 5ed24701f9cf..80f43e69e659 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
@@ -56,6 +56,9 @@ static bool is_fru_eeprom_supported(struct amdgpu_device *adev)
 			return true;
 		else
 			return false;
+	case CHIP_ALDEBARAN:
+		/* All Aldebaran SKUs have the FRU */
+		return true;
 	default:
 		return false;
 	}
@@ -91,6 +94,10 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
 	unsigned char buff[PRODUCT_NAME_LEN+2];
 	u32 addrptr;
 	int size, len;
+	int offset = 2;
+
+	if (adev->asic_type == CHIP_ALDEBARAN)
+		offset = 0;
 
 	if (!is_fru_eeprom_supported(adev))
 		return 0;
@@ -137,7 +144,7 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
 		len = PRODUCT_NAME_LEN - 1;
 	}
 	/* Start at 2 due to buff using fields 0 and 1 for the address */
-	memcpy(adev->product_name, &buff[2], len);
+	memcpy(adev->product_name, &buff[offset], len);
 	adev->product_name[len] = '\0';
 
 	addrptr += size + 1;
@@ -155,7 +162,7 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
 		DRM_WARN("FRU Product Number is larger than 16 characters. This is likely a mistake");
 		len = sizeof(adev->product_number) - 1;
 	}
-	memcpy(adev->product_number, &buff[2], len);
+	memcpy(adev->product_number, &buff[offset], len);
 	adev->product_number[len] = '\0';
 
 	addrptr += size + 1;
@@ -182,7 +189,7 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
 		DRM_WARN("FRU Serial Number is larger than 16 characters. This is likely a mistake");
 		len = sizeof(adev->serial) - 1;
 	}
-	memcpy(adev->serial, &buff[2], len);
+	memcpy(adev->serial, &buff[offset], len);
 	adev->serial[len] = '\0';
 
 	return 0;
--
2.25.1