[PATCH] drm/amdgpu: Disable FRU EEPROM access for SRIOV

Chen, Guchun Guchun.Chen at amd.com
Fri Jan 21 01:42:41 UTC 2022


Acked-by: Guchun Chen <guchun.chen at amd.com>


-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of shaoyunl
Sent: Thursday, January 20, 2022 11:49 PM
To: amd-gfx at lists.freedesktop.org
Cc: Liu, Shaoyun <Shaoyun.Liu at amd.com>
Subject: [PATCH] drm/amdgpu: Disable FRU EEPROM access for SRIOV

VF acces the EEPROM is blocked by security policy, we might need other way to get SKUs info for VF

Signed-off-by: shaoyunl <shaoyun.liu at amd.com>
 drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
index 2a786e788627..0548e279cc9f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
@@ -40,6 +40,12 @@ static bool is_fru_eeprom_supported(struct amdgpu_device *adev)
 	struct atom_context *atom_ctx = adev->mode_info.atom_context;
+	/* The i2c access is blocked on VF
+	 * TODO: Need other way to get the info
+	 */  
+	if (amdgpu_sriov_vf(adev)
+		return false;
 	/* VBIOS is of the format ###-DXXXYY-##. For SKU identification,
 	 * we can use just the "DXXX" portion. If there were more models, we
 	 * could convert the 3 characters to a hex integer and use a switch

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