This patch adds interface to allocate memory pool for smu.
This memory pool will be used for SMC use and msg SetSystemVirtualDramAddr and
DramLogSetDramAddr can notify it changed.
v2: add detailed info to describe this function
Signed-off-by: Huang Rui <ray.huang@xxxxxxx>
---
drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 87c46cf..4f61ee9 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -216,6 +216,21 @@ static int smu_smc_table_hw_init(struct smu_context *smu)
return ret;
}
+/**
+ * smu_alloc_memory_pool - allocate memory pool in the system memory
+ *
+ * @smu: amdgpu_device pointer
+ *
+ * This memory pool will be used for SMC use and msg SetSystemVirtualDramAddr
+ * and DramLogSetDramAddr can notify it changed.
+ *
+ * Returns 0 on success, error on failure.
+ */
+static int smu_alloc_memory_pool(struct smu_context *smu)
+{
+ return 0;
+}
+
static int smu_hw_init(void *handle)
{
int ret;
@@ -243,6 +258,10 @@ static int smu_hw_init(void *handle)
if (ret)
goto failed;
+ ret = smu_alloc_memory_pool(smu);
+ if (ret)
+ goto failed;
+
mutex_unlock(&smu->mutex);
pr_info("SMU is initialized successfully!\n");
--
2.7.4
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