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authorAlex Deucher <alexander.deucher@amd.com>2016-09-23 13:10:49 -0400
committerAlex Deucher <alexander.deucher@amd.com>2017-03-29 23:54:17 -0400
commit43bf11bd9231ad06bd1d91c847beda52b88bc6e0 (patch)
treec9a150fb340728c58a5d0324bda1b8d305124f71 /drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
parent0cdd500560e233aef4e0749c9f014e9ee8f4d752 (diff)
downloadlinux-stericsson-43bf11bd9231ad06bd1d91c847beda52b88bc6e0.tar.gz
drm/amdgpu: move atom scratch setup into amdgpu_atombios.c
There will be a slightly different version for atomfirmware. Acked-by: Christian K├Ânig <christian.koenig@amd.com> Reviewed-by: Ken Wang <Qingqing.Wang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
index 56a86dd5789e..f52b1bf3d3d9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
@@ -1748,3 +1748,31 @@ void amdgpu_atombios_copy_swap(u8 *dst, u8 *src, u8 num_bytes, bool to_le)
memcpy(dst, src, num_bytes);
#endif
}
+
+int amdgpu_atombios_allocate_fb_scratch(struct amdgpu_device *adev)
+{
+ struct atom_context *ctx = adev->mode_info.atom_context;
+ int index = GetIndexIntoMasterTable(DATA, VRAM_UsageByFirmware);
+ uint16_t data_offset;
+ int usage_bytes = 0;
+ struct _ATOM_VRAM_USAGE_BY_FIRMWARE *firmware_usage;
+
+ if (amdgpu_atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) {
+ firmware_usage = (struct _ATOM_VRAM_USAGE_BY_FIRMWARE *)(ctx->bios + data_offset);
+
+ DRM_DEBUG("atom firmware requested %08x %dkb\n",
+ le32_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].ulStartAddrUsedByFirmware),
+ le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb));
+
+ usage_bytes = le16_to_cpu(firmware_usage->asFirmwareVramReserveInfo[0].usFirmwareUseInKb) * 1024;
+ }
+ ctx->scratch_size_bytes = 0;
+ if (usage_bytes == 0)
+ usage_bytes = 20 * 1024;
+ /* allocate some scratch memory */
+ ctx->scratch = kzalloc(usage_bytes, GFP_KERNEL);
+ if (!ctx->scratch)
+ return -ENOMEM;
+ ctx->scratch_size_bytes = usage_bytes;
+ return 0;
+}