Series are Reviewed-by: Hawking Zhang <[email protected]> Regards, Hawking -----Original Message----- From: amd-gfx [mailto:[email protected]] On Behalf Of Alex Deucher Sent: Thursday, July 06, 2017 3:51 To: [email protected] Cc: Deucher, Alexander <[email protected]> Subject: [PATCH 2/3] drm/amdgpu/atomfirmware: implement vram_width for APUs
Implement support using the new atomfirmware system info table. Signed-off-by: Alex Deucher <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | 33 ++++++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h | 1 + 2 files changed, 34 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c index 4bdda56..7a0212b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c @@ -130,3 +130,36 @@ int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev) ctx->scratch_size_bytes = usage_bytes; return 0; } + +union igp_info { + struct atom_integrated_system_info_v1_11 v11; }; + +/* + * Return vram width from integrated system info table, if available, + * or 0 if not. + */ +int amdgpu_atomfirmware_get_vram_width(struct amdgpu_device *adev) { + struct amdgpu_mode_info *mode_info = &adev->mode_info; + int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1, + integratedsysteminfo); + u16 data_offset, size; + union igp_info *igp_info; + u8 frev, crev; + + /* get any igp specific overrides */ + if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, &size, + &frev, &crev, &data_offset)) { + igp_info = (union igp_info *) + (mode_info->atom_context->bios + data_offset); + switch (crev) { + case 11: + return igp_info->v11.umachannelnumber * 64; + default: + return 0; + } + } + + return 0; +} diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h index a2c3ebe..e37e4c8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.h @@ -31,5 +31,6 @@ void amdgpu_atomfirmware_scratch_regs_restore(struct amdgpu_device *adev); void amdgpu_atomfirmware_scratch_regs_engine_hung(struct amdgpu_device *adev, bool hung); int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev); +int amdgpu_atomfirmware_get_vram_width(struct amdgpu_device *adev); #endif -- 2.5.5 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
