From: wenlunpeng <[email protected]> The quirk is for reboot-stability.
A device reboot stress test has been observed to cause random system hangs when amdgpu_dpm is enabled. Disabling amdgpu_dpm can fix this. However, a boot-param can still overwrite it to enable amdgpu_dpm. Serial log when error occurs: ... Console: switching to colour frame buffer device 160x45 amdgpu 0000:01:00.0: fb0: amdgpudrmfb frame buffer device [drm:amdgpu_device_ip_late_init] *ERROR* late_init of IP block <si_dpm> failed -22 amdgpu 0000:01:00.0: amdgpu_device_ip_late_init failed amdgpu 0000:01:00.0: Fatal error during GPU init [drm] amdgpu: finishing device. Console: switching to colour dummy device 80x25 ... Signed-off-by: wenlunpeng <[email protected]> Signed-off-by: WangYuli <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 094498a0964b..81716fcac7cd 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -32,6 +32,7 @@ #include <drm/drm_vblank.h> #include <linux/cc_platform.h> +#include <linux/dmi.h> #include <linux/dynamic_debug.h> #include <linux/module.h> #include <linux/mmu_notifier.h> @@ -3023,10 +3024,32 @@ static struct pci_driver amdgpu_kms_pci_driver = { .dev_groups = amdgpu_sysfs_groups, }; +static int quirk_set_amdgpu_dpm_0(const struct dmi_system_id *dmi) +{ + amdgpu_dpm = 0; + pr_info("Identified '%s', set amdgpu_dpm to 0.\n", dmi->ident); + return 1; +} + +static const struct dmi_system_id amdgpu_quirklist[] = { + { + .ident = "DS25 Desktop", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "THTF-SW831-1W-DS25_MB"), + }, + .callback = quirk_set_amdgpu_dpm_0, + }, + {} +}; + static int __init amdgpu_init(void) { int r; + /* quirks for some hardware, applied only when it's untouched */ + if (amdgpu_dpm == -1) + dmi_check_system(amdgpu_quirklist); + if (drm_firmware_drivers_only()) return -EINVAL; -- 2.43.4
