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GPU (Linux): fix asahi linux support again

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Found in kernel-headers-6.14.4-400.asahi.fc42.aarch64
This commit is contained in:
Carter Li
2025-05-06 09:26:47 +08:00
parent f59491b25d
commit ef7f61309f
2 changed files with 31 additions and 123 deletions
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src/detection/gpu/gpu_linux.c
+31 -32
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@@ -21,7 +21,12 @@
#include <sys/ioctl.h>
#endif
#include "gpu_asahi.h"
#if defined(FF_HAVE_DRM) && __has_include(<drm/asahi_drm.h>)
// https://github.com/alyssarosenzweig/linux/blob/agx-uapi-v7/include/uapi/drm/asahi_drm.h
// Found in kernel-headers-6.14.4-400.asahi.fc42.aarch64
#include <drm/asahi_drm.h>
#define FF_HAVE_DRM_ASAHI 1
#endif
#define FF_STR_INDIR(x) #x
#define FF_STR(x) FF_STR_INDIR(x)
@@ -590,13 +595,13 @@ static const char* detectPci(const FFGPUOptions* options, FFlist* gpus, FFstrbuf
#if __aarch64__
FF_MAYBE_UNUSED static const char* drmDetectAsahiSpecific(FFGPUResult* gpu, const char* name, FFstrbuf* buffer, const char* drmKey)
FF_MAYBE_UNUSED static const char* drmDetectAsahiSpecific(FFGPUResult* gpu, const char* name, FF_MAYBE_UNUSED FFstrbuf* buffer, FF_MAYBE_UNUSED const char* drmKey)
{
if (sscanf(name, "agx-t%lu", &gpu->deviceId) == 1)
ffStrbufSetStatic(&gpu->name, ffCPUAppleCodeToName((uint32_t) gpu->deviceId));
ffStrbufSetStatic(&gpu->vendor, FF_GPU_VENDOR_NAME_APPLE);
#if FF_HAVE_DRM
#if FF_HAVE_DRM_ASAHI
ffStrbufSetS(buffer, "/dev/dri/");
ffStrbufAppendS(buffer, drmKey);
FF_AUTO_CLOSE_FD int fd = open(buffer->chars, O_RDONLY);
@@ -609,38 +614,32 @@ FF_MAYBE_UNUSED static const char* drmDetectAsahiSpecific(FFGPUResult* gpu, cons
.size = sizeof(paramsGlobal),
}) >= 0)
{
ffStrbufAppendF(&gpu->driver, " %u", paramsGlobal.unstable_uabi_version);
// They removed `unstable_uabi_version` from the struct. Hopefully they won't introduce new ABI changes.
gpu->coreCount = (int32_t) (paramsGlobal.num_clusters_total * paramsGlobal.num_cores_per_cluster);
gpu->frequency = paramsGlobal.max_frequency_khz / 1000;
gpu->deviceId = paramsGlobal.chip_id;
// FIXME: They will introduce ABI breaking changes. Always check the latest version
// https://www.reddit.com/r/AsahiLinux/comments/1ei2qiv/comment/lgm0v5s/
if (paramsGlobal.unstable_uabi_version == DRM_ASAHI_UNSTABLE_UABI_VERSION)
if (!gpu->name.length)
{
gpu->coreCount = (int) paramsGlobal.num_cores_total_active;
gpu->frequency = paramsGlobal.max_frequency_khz / 1000;
gpu->deviceId = paramsGlobal.chip_id;
if (!gpu->name.length)
{
const char* variant = " Unknown";
switch (paramsGlobal.gpu_variant) {
case 'G':
variant = "";
break;
case 'S':
variant = " Pro";
break;
case 'C':
variant = " Max";
break;
case 'D':
variant = " Ultra";
break;
}
ffStrbufSetF(&gpu->name, "Apple M%d%s (G%d%c %02X)",
paramsGlobal.gpu_generation - 12, variant,
paramsGlobal.gpu_generation, paramsGlobal.gpu_variant,
paramsGlobal.gpu_revision + 0xA0);
const char* variant = " Unknown";
switch (paramsGlobal.gpu_variant) {
case 'G':
variant = "";
break;
case 'S':
variant = " Pro";
break;
case 'C':
variant = " Max";
break;
case 'D':
variant = " Ultra";
break;
}
ffStrbufSetF(&gpu->name, "Apple M%d%s (G%d%c %02X)",
paramsGlobal.gpu_generation - 12, variant,
paramsGlobal.gpu_generation, paramsGlobal.gpu_variant,
paramsGlobal.gpu_revision + 0xA0);
}
}
}