[PATCH 13/13] drm/amd/display: Enable copying of bounding box data from VBIOS DMUB
Harry Wentland
harry.wentland at amd.com
Mon May 27 14:50:09 UTC 2024
On 2024-05-23 15:20, Aurabindo Pillai wrote:
> Allocate some memory, send the address in chunks to dmub, and finally
> ask it to copy the bounding box data into the newly allocated memory.
>
> Signed-off-by: Aurabindo Pillai <aurabindo.pillai at amd.com>
The entire series is
Acked-by: Harry Wentland <harry.wentland at amd.com>
Harry
> ---
> .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 121 ++++++++++++++++++
> .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 10 ++
> .../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 24 +---
> drivers/gpu/drm/amd/display/dc/core/dc.c | 5 +
> drivers/gpu/drm/amd/display/dc/dc.h | 3 +
> .../dc/dml2/dml21/dml21_translation_helper.c | 6 +-
> .../drm/amd/display/dc/dml2/dml2_wrapper.h | 1 +
> 7 files changed, 146 insertions(+), 24 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index bb4573603479..74accbcaae28 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -1627,6 +1627,117 @@ static void retrieve_dmi_info(struct amdgpu_display_manager *dm)
> }
> }
>
> +void*
> +dm_allocate_gpu_mem(
> + struct amdgpu_device *adev,
> + enum dc_gpu_mem_alloc_type type,
> + size_t size,
> + long long *addr)
> +{
> + struct dal_allocation *da;
> + u32 domain = (type == DC_MEM_ALLOC_TYPE_GART) ?
> + AMDGPU_GEM_DOMAIN_GTT : AMDGPU_GEM_DOMAIN_VRAM;
> + int ret;
> +
> + da = kzalloc(sizeof(struct dal_allocation), GFP_KERNEL);
> + if (!da)
> + return NULL;
> +
> + ret = amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
> + domain, &da->bo,
> + &da->gpu_addr, &da->cpu_ptr);
> +
> + *addr = da->gpu_addr;
> +
> + if (ret) {
> + kfree(da);
> + return NULL;
> + }
> +
> + /* add da to list in dm */
> + list_add(&da->list, &adev->dm.da_list);
> +
> + return da->cpu_ptr;
> +}
> +
> +static enum dmub_status
> +dm_dmub_send_vbios_gpint_command(struct amdgpu_device *adev,
> + enum dmub_gpint_command command_code,
> + uint16_t param,
> + uint32_t timeout_us)
> +{
> + union dmub_gpint_data_register reg, test;
> + uint32_t i;
> +
> + /* Assume that VBIOS DMUB is ready to take commands */
> +
> + reg.bits.status = 1;
> + reg.bits.command_code = command_code;
> + reg.bits.param = param;
> +
> + cgs_write_register(adev->dm.cgs_device, 0x34c0 + 0x01f8, reg.all);
> +
> + for (i = 0; i < timeout_us; ++i) {
> + udelay(1);
> +
> + /* Check if our GPINT got acked */
> + reg.bits.status = 0;
> + test = (union dmub_gpint_data_register)
> + cgs_read_register(adev->dm.cgs_device, 0x34c0 + 0x01f8);
> +
> + if (test.all == reg.all)
> + return DMUB_STATUS_OK;
> + }
> +
> + return DMUB_STATUS_TIMEOUT;
> +}
> +
> +static struct dml2_soc_bb *dm_dmub_get_vbios_bounding_box(struct amdgpu_device *adev)
> +{
> + struct dml2_soc_bb *bb;
> + long long addr;
> + int i = 0;
> + uint16_t chunk;
> + enum dmub_gpint_command send_addrs[] = {
> + DMUB_GPINT__SET_BB_ADDR_WORD0,
> + DMUB_GPINT__SET_BB_ADDR_WORD1,
> + DMUB_GPINT__SET_BB_ADDR_WORD2,
> + DMUB_GPINT__SET_BB_ADDR_WORD3,
> + };
> + enum dmub_status ret;
> +
> + switch (amdgpu_ip_version(adev, DCE_HWIP, 0)) {
> + case IP_VERSION(4, 0, 1):
> + break;
> + default:
> + return NULL;
> + }
> +
> + bb = dm_allocate_gpu_mem(adev,
> + DC_MEM_ALLOC_TYPE_GART,
> + sizeof(struct dml2_soc_bb),
> + &addr);
> + if (!bb)
> + return NULL;
> +
> + for (i = 0; i < 4; i++) {
> + /* Extract 16-bit chunk */
> + chunk = ((uint64_t) addr >> (i * 16)) & 0xFFFF;
> + /* Send the chunk */
> + ret = dm_dmub_send_vbios_gpint_command(adev, send_addrs[i], chunk, 30000);
> + if (ret != DMUB_STATUS_OK)
> + /* No need to free bb here since it shall be done unconditionally <elsewhere> */
> + return NULL;
> + }
> +
> + /* Now ask DMUB to copy the bb */
> + ret = dm_dmub_send_vbios_gpint_command(adev, DMUB_GPINT__BB_COPY, 1, 200000);
> + if (ret != DMUB_STATUS_OK)
> + return NULL;
> +
> + return bb;
> +}
> +
> static int amdgpu_dm_init(struct amdgpu_device *adev)
> {
> struct dc_init_data init_data;
> @@ -1748,6 +1859,11 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
>
> retrieve_dmi_info(&adev->dm);
>
> + if (adev->dm.bb_from_dmub)
> + init_data.bb_from_dmub = adev->dm.bb_from_dmub;
> + else
> + init_data.bb_from_dmub = NULL;
> +
> /* Display Core create. */
> adev->dm.dc = dc_create(&init_data);
>
> @@ -2305,6 +2421,8 @@ static int dm_dmub_sw_init(struct amdgpu_device *adev)
> return -EINVAL;
> }
>
> + adev->dm.bb_from_dmub = dm_dmub_get_vbios_bounding_box(adev);
> +
> return 0;
> }
>
> @@ -2334,6 +2452,9 @@ static int dm_sw_fini(void *handle)
> {
> struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>
> + kfree(adev->dm.bb_from_dmub);
> + adev->dm.bb_from_dmub = NULL;
> +
> kfree(adev->dm.dmub_fb_info);
> adev->dm.dmub_fb_info = NULL;
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> index a01f3f5bf2c0..94fc4c15d2db 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
> @@ -578,6 +578,11 @@ struct amdgpu_display_manager {
> * Guards access to DPIA AUX
> */
> struct mutex dpia_aux_lock;
> +
> + /*
> + * Bounding box data read from dmub during early initialization for DCN4+
> + */
> + struct dml2_soc_bb *bb_from_dmub;
> };
>
> enum dsc_clock_force_state {
> @@ -964,4 +969,9 @@ amdgpu_dm_find_first_crtc_matching_connector(struct drm_atomic_state *state,
>
> int convert_dc_color_depth_into_bpc(enum dc_color_depth display_color_depth);
> struct idle_workqueue *idle_create_workqueue(struct amdgpu_device *adev);
> +
> +void *dm_allocate_gpu_mem(struct amdgpu_device *adev,
> + enum dc_gpu_mem_alloc_type type,
> + size_t size,
> + long long *addr);
> #endif /* __AMDGPU_DM_H__ */
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
> index 6d0f78b9ec0c..8eb2f10f2c38 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
> @@ -1045,30 +1045,8 @@ void *dm_helpers_allocate_gpu_mem(
> long long *addr)
> {
> struct amdgpu_device *adev = ctx->driver_context;
> - struct dal_allocation *da;
> - u32 domain = (type == DC_MEM_ALLOC_TYPE_GART) ?
> - AMDGPU_GEM_DOMAIN_GTT : AMDGPU_GEM_DOMAIN_VRAM;
> - int ret;
> -
> - da = kzalloc(sizeof(struct dal_allocation), GFP_KERNEL);
> - if (!da)
> - return NULL;
> -
> - ret = amdgpu_bo_create_kernel(adev, size, PAGE_SIZE,
> - domain, &da->bo,
> - &da->gpu_addr, &da->cpu_ptr);
> -
> - *addr = da->gpu_addr;
> -
> - if (ret) {
> - kfree(da);
> - return NULL;
> - }
> -
> - /* add da to list in dm */
> - list_add(&da->list, &adev->dm.da_list);
>
> - return da->cpu_ptr;
> + return dm_allocate_gpu_mem(adev, type, size, addr);
> }
>
> void dm_helpers_free_gpu_mem(
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
> index 3a2101b052ea..1526ab0b4884 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
> @@ -1014,6 +1014,11 @@ static bool dc_construct(struct dc *dc,
>
> dc->dcn_ip = dcn_ip;
>
> + if (init_params->bb_from_dmub)
> + dc->dml2_options.bb_from_dmub = init_params->bb_from_dmub;
> + else
> + dc->dml2_options.bb_from_dmub = NULL;
> +
> if (!dc_construct_ctx(dc, init_params)) {
> dm_error("%s: failed to create ctx\n", __func__);
> goto fail;
> diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
> index 31e3371b1b2e..d0ed01ac460d 100644
> --- a/drivers/gpu/drm/amd/display/dc/dc.h
> +++ b/drivers/gpu/drm/amd/display/dc/dc.h
> @@ -1067,6 +1067,8 @@ struct dchub_init_data {
> bool dchub_info_valid;
> };
>
> +struct dml2_soc_bb;
> +
> struct dc_init_data {
> struct hw_asic_id asic_id;
> void *driver; /* ctx */
> @@ -1099,6 +1101,7 @@ struct dc_init_data {
> uint32_t *dcn_reg_offsets;
> uint32_t *nbio_reg_offsets;
> uint32_t *clk_reg_offsets;
> + struct dml2_soc_bb *bb_from_dmub;
> };
>
> struct dc_callback_init {
> diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c b/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c
> index 37998f2c0b14..9f641ffdc924 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c
> +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c
> @@ -26,7 +26,11 @@ static void dml21_init_socbb_params(struct dml2_initialize_instance_in_out *dml_
> break;
> case DCN_VERSION_4_01:
> default:
> - soc_bb = &dml2_socbb_dcn401;
> + if (config->bb_from_dmub)
> + soc_bb = config->bb_from_dmub;
> + else
> + soc_bb = &dml2_socbb_dcn401;
> +
> qos_params = &dml_dcn401_soc_qos_params;
> }
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.h b/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.h
> index dcb4e6f4d916..20b3970c0857 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.h
> +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.h
> @@ -236,6 +236,7 @@ struct dml2_configuration_options {
>
> bool use_clock_dc_limits;
> bool gpuvm_enable;
> + struct dml2_soc_bb *bb_from_dmub;
> };
>
> /*
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