[PATCH 018/138] drm/amd/powerplay: add interface to allocate memory pool (v2)

[Huang Rui]

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 at amd.com>
---
 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