I wrote this code in response to a issue someone on mesa-users had
(https://lists.freedesktop.org/archives/mesa-users/2016-October/001231.html).
They didn't reply so I don't know if the patch resolved the issue. Can
someone please determine its usefulness. Also please check if
drmCommandWrite() is the correct function to use. I can't test the
code, I don't have amdgpu.
diff --git a/mesa/src/loader/loader.c b/mesa2/src/loader/loader.c
index 3e60e4c..4a89ba4 100644
--- a/mesa/src/loader/loader.c
+++ b/mesa2/src/loader/loader.c
@@ -515,6 +515,8 @@ sysfs_get_pci_id_for_fd(int fd, int *vendor_id, int
*chip_id)
#include <i915_drm.h>
/* for radeon */
#include <radeon_drm.h>
+/* for amdgpu */
+#include <amdgpu_drm.h>
static int
drm_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
@@ -564,6 +566,26 @@ drm_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
*chip_id = -1;
}
}
+ else if (strcmp(version->name, "amdgpu") == 0) {
+ struct drm_amdgpu_info info;
+ struct drm_amdgpu_info_device info_device;
+ int ret;
+
+ *vendor_id = 0x1002;
+
+ memset(&info, 0, sizeof(info));
+ memset(&info_device, 0, sizeof(info_device));
+ info.query = AMDGPU_INFO_DEV_INFO;
+ info.return_pointer = (uint64_t) &info_device;
+ info.return_size = sizeof(struct drm_amdgpu_info_device);
+ ret = drmCommandWrite(fd, DRM_AMDGPU_INFO, &info, sizeof(info));
+ if (ret) {
+ log_(_LOADER_WARNING, "MESA-LOADER: failed to get info for amdgpu\n");
+ *chip_id = -1;
+ } else {
+ *chip_id = info_device.device_id;
+ }
+ }
else if (strcmp(version->name, "nouveau") == 0) {
*vendor_id = 0x10de;
/* not used */
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