GPU (Linux): refactor; add amdgpu DRM connector

Author: CarterLi

src/detection/gpu/gpu.h

@@ -7,7 +7,7 @@
 #define FF_GPU_VMEM_SIZE_UNSET ((uint64_t)-1)
 #define FF_GPU_FREQUENCY_UNSET 0
 #define FF_GPU_CORE_USAGE_UNSET (0/0.0)
-#define FF_GPU_INDEX_UNSET ((uint8_t)-1)
+#define FF_GPU_INDEX_UNSET ((uint32_t)-1)
 
 extern const char* FF_GPU_VENDOR_NAME_APPLE;
 extern const char* FF_GPU_VENDOR_NAME_AMD;
@@ -40,7 +40,7 @@ typedef struct FFGPUResult
  uint32_t frequency; // Maximum time clock frequency in MHz
  FFGPUMemory dedicated;
  FFGPUMemory shared;
- uint64_t deviceId; // Used internally, may be uninitialized
+ uint64_t deviceId;
 } FFGPUResult;
 
 const char* ffDetectGPU(const FFGPUOptions* options, FFlist* result);

src/detection/gpu/gpu_asahi.h

@@ -0,0 +1,91 @@
+#if __aarch64__ && FF_HAVE_DRM
+
+#include <drm.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+
+#if __has_include(<drm/asahi_drm.h>)
+
+#include <drm/asahi_drm.h>
+
+#else
+
+// https://github.com/AsahiLinux/linux/blob/asahi/include/uapi/drm/asahi_drm.h
+/* SPDX-License-Identifier: MIT */
+/* Copyright (C) The Asahi Linux Contributors */
+
+#define DRM_ASAHI_UNSTABLE_UABI_VERSION10011
+
+#define DRM_ASAHI_GET_PARAMS0x00
+#define DRM_ASAHI_MAX_CLUSTERS32
+struct drm_asahi_params_global
+{
+ __u32 unstable_uabi_version;
+ __u32 pad0;
+
+ __u64 feat_compat;
+ __u64 feat_incompat;
+
+ __u32 gpu_generation;
+ __u32 gpu_variant;
+ __u32 gpu_revision;
+ __u32 chip_id;
+
+ __u32 num_dies;
+ __u32 num_clusters_total;
+ __u32 num_cores_per_cluster;
+ __u32 num_frags_per_cluster;
+ __u32 num_gps_per_cluster;
+ __u32 num_cores_total_active;
+ __u64 core_masks[DRM_ASAHI_MAX_CLUSTERS];
+
+ __u32 vm_page_size;
+ __u32 pad1;
+ __u64 vm_user_start;
+ __u64 vm_user_end;
+ __u64 vm_usc_start;
+ __u64 vm_usc_end;
+ __u64 vm_kernel_min_size;
+
+ __u32 max_syncs_per_submission;
+ __u32 max_commands_per_submission;
+ __u32 max_commands_in_flight;
+ __u32 max_attachments;
+
+ __u32 timer_frequency_hz;
+ __u32 min_frequency_khz;
+ __u32 max_frequency_khz;
+ __u32 max_power_mw;
+
+ __u32 result_render_size;
+ __u32 result_compute_size;
+
+ __u32 firmware_version[4];
+};
+
+struct drm_asahi_get_params
+{
+ /** @extensions: Pointer to the first extension struct, if any */
+ __u64 extensions;
+
+ /** @param: Parameter group to fetch (MBZ) */
+ __u32 param_group;
+
+ /** @pad: MBZ */
+ __u32 pad;
+
+ /** @value: User pointer to write parameter struct */
+ __u64 pointer;
+
+ /** @value: Size of user buffer, max size supported on return */
+ __u64 size;
+};
+
+enum
+{
+ DRM_IOCTL_ASAHI_GET_PARAMS = DRM_IOWR(DRM_COMMAND_BASE + DRM_ASAHI_GET_PARAMS, struct drm_asahi_get_params),
+};
+
+#endif // __has_include
+
+#endif // FF_HAVE_DRM