[AMD Official Use Only - Internal Distribution Only]
Reviewed-by: John Clements<John.Clements@xxxxxxx>
-----Original Message-----
From: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Sent: Sunday, April 25, 2021 3:10 PM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx; Li, Dennis <Dennis.Li@xxxxxxx>; Clements, John <John.Clements@xxxxxxx>; Deucher, Alexander <Alexander.Deucher@xxxxxxx>
Cc: Zhang, Hawking <Hawking.Zhang@xxxxxxx>
Subject: [PATCH 1/2] drm/amdgpu: implement smuio callback to query socket id
get_socket_id is used to query socket id
Signed-off-by: Hawking Zhang <Hawking.Zhang@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_smuio.h | 1 + drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c | 18 ++++++++++++++++++
2 files changed, 19 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_smuio.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_smuio.h
index b860ec9..484bb3d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_smuio.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_smuio.h
@@ -29,6 +29,7 @@ struct amdgpu_smuio_funcs {
void (*update_rom_clock_gating)(struct amdgpu_device *adev, bool enable);
void (*get_clock_gating_state)(struct amdgpu_device *adev, u32 *flags);
u32 (*get_die_id)(struct amdgpu_device *adev);
+ u32 (*get_socket_id)(struct amdgpu_device *adev);
bool (*is_host_gpu_xgmi_supported)(struct amdgpu_device *adev); };
diff --git a/drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c b/drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c
index 079b094..3c47c94 100644
--- a/drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c
@@ -89,6 +89,23 @@ static u32 smuio_v13_0_get_die_id(struct amdgpu_device *adev) }
/**
+ * smuio_v13_0_get_socket_id - query socket id from FCH
+ *
+ * @adev: amdgpu device pointer
+ *
+ * Returns socket id
+ */
+static u32 smuio_v13_0_get_socket_id(struct amdgpu_device *adev) {
+ u32 data, socket_id;
+
+ data = RREG32_SOC15(SMUIO, 0, regSMUIO_MCM_CONFIG);
+ socket_id = REG_GET_FIELD(data, SMUIO_MCM_CONFIG, SOCKET_ID);
+
+ return socket_id;
+}
+
+/**
* smuio_v13_0_supports_host_gpu_xgmi - detect xgmi interface between cpu and gpu/s.
*
* @adev: amdgpu device pointer
@@ -115,6 +132,7 @@ const struct amdgpu_smuio_funcs smuio_v13_0_funcs = {
.get_rom_index_offset = smuio_v13_0_get_rom_index_offset,
.get_rom_data_offset = smuio_v13_0_get_rom_data_offset,
.get_die_id = smuio_v13_0_get_die_id,
+ .get_socket_id = smuio_v13_0_get_socket_id,
.is_host_gpu_xgmi_supported = smuio_v13_0_is_host_gpu_xgmi_supported,
.update_rom_clock_gating = smuio_v13_0_update_rom_clock_gating,
.get_clock_gating_state = smuio_v13_0_get_clock_gating_state,
--
2.7.4
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