[PATCH 09/29] drm/amdgpu: track instances of the same IP block

[boyuan.zhang at amd.com]

From: Boyuan Zhang <boyuan.zhang at amd.com>

Add a new function to count the number of instance of the same IP block
in the current ip_block list, then use the returned count value to set
the newly defined instance variable in ip_block, to track the instance
number of each ip_block.

Signed-off-by: Boyuan Zhang <boyuan.zhang at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Suggested-by: Christian König <christian.koenig at amd.com>
Reviewed-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h        |  1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 25 +++++++++++++++++++++-
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index fba10ad44be9..2e2c6a556cc8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -390,6 +390,7 @@ struct amdgpu_ip_block {
 	struct amdgpu_ip_block_status status;
 	const struct amdgpu_ip_block_version *version;
 	struct amdgpu_device *adev;
+	unsigned int instance;
 };
 
 int amdgpu_device_ip_block_version_cmp(struct amdgpu_device *adev,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 7c06e3a9146c..065463b5d6a9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2322,6 +2322,28 @@ int amdgpu_device_ip_block_version_cmp(struct amdgpu_device *adev,
 	return 1;
 }
 
+/**
+ * amdgpu_device_ip_get_num_instances - get number of instances of an IP block
+ *
+ * @adev: amdgpu_device pointer
+ * @type: Type of hardware IP (SMU, GFX, UVD, etc.)
+ *
+ * Returns the count of the hardware IP blocks structure for that type.
+ */
+static unsigned int
+amdgpu_device_ip_get_num_instances(struct amdgpu_device *adev,
+				    enum amd_ip_block_type type)
+{
+	unsigned int i, count = 0;
+
+	for (i = 0; i < adev->num_ip_blocks; i++) {
+		if (adev->ip_blocks[i].version->type == type)
+			count++;
+	}
+
+	return count;
+}
+
 /**
  * amdgpu_device_ip_block_add
  *
@@ -2354,7 +2376,8 @@ int amdgpu_device_ip_block_add(struct amdgpu_device *adev,
 		  ip_block_version->funcs->name);
 
 	adev->ip_blocks[adev->num_ip_blocks].adev = adev;
-
+	adev->ip_blocks[adev->num_ip_blocks].instance =
+		amdgpu_device_ip_get_num_instances(adev, ip_block_version->type);
 	adev->ip_blocks[adev->num_ip_blocks++].version = ip_block_version;
 
 	return 0;
-- 
2.34.1