From: Lijo Lazar Date: Fri, 27 Jan 2023 13:10:14 +0000 (+0530) Subject: drm/amdgpu: Add API to get tmr info from acpi X-Git-Tag: v6.6.7~2401^2~12^2~402 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6e01882267a696b022cfe3473a0d3e5ccbe54010;p=platform%2Fkernel%2Flinux-starfive.git drm/amdgpu: Add API to get tmr info from acpi In certain configs, TMR information is available from ACPI. Add API to fetch the information. Signed-off-by: Lijo Lazar Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 880bf9d..f4461bc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1400,6 +1400,8 @@ int amdgpu_acpi_power_shift_control(struct amdgpu_device *adev, u8 dev_state, bool drv_state); int amdgpu_acpi_smart_shift_update(struct drm_device *dev, enum amdgpu_ss ss_state); int amdgpu_acpi_pcie_notify_device_ready(struct amdgpu_device *adev); +int amdgpu_acpi_get_tmr_info(struct amdgpu_device *adev, u64 *tmr_offset, + u64 *tmr_size); void amdgpu_acpi_get_backlight_caps(struct amdgpu_dm_backlight_caps *caps); bool amdgpu_acpi_should_gpu_reset(struct amdgpu_device *adev); @@ -1407,6 +1409,11 @@ void amdgpu_acpi_detect(void); void amdgpu_acpi_release(void); #else static inline int amdgpu_acpi_init(struct amdgpu_device *adev) { return 0; } +static inline int amdgpu_acpi_get_tmr_info(struct amdgpu_device *adev, + u64 *tmr_offset, u64 *tmr_size) +{ + return -EINVAL; +} static inline void amdgpu_acpi_fini(struct amdgpu_device *adev) { } static inline bool amdgpu_acpi_should_gpu_reset(struct amdgpu_device *adev) { return false; } static inline void amdgpu_acpi_detect(void) { } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c index a3a2ef4..9dbdd69 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c @@ -1072,6 +1072,26 @@ static int amdgpu_acpi_enumerate_xcc(void) return 0; } +int amdgpu_acpi_get_tmr_info(struct amdgpu_device *adev, u64 *tmr_offset, + u64 *tmr_size) +{ + struct amdgpu_acpi_dev_info *dev_info; + u16 bdf; + + if (!tmr_offset || !tmr_size) + return -EINVAL; + + bdf = (adev->pdev->bus->number << 8) | adev->pdev->devfn; + dev_info = amdgpu_acpi_get_dev(bdf); + if (!dev_info) + return -ENOENT; + + *tmr_offset = dev_info->tmr_base; + *tmr_size = dev_info->tmr_size; + + return 0; +} + /** * amdgpu_acpi_event - handle notify events *