drm/amdgpu:add fw-vram-usage for atomfirmware

otherwise PF & VF exchange is broken

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 18 insertions, 4 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
index f9ffe8ef0cd6..ff8efd0f8fd5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
@@ -71,19 +71,33 @@ int amdgpu_atomfirmware_allocate_fb_scratch(struct amdgpu_device *adev)
         struct atom_context *ctx = adev->mode_info.atom_context;
         int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
                                                 vram_usagebyfirmware);
+        struct vram_usagebyfirmware_v2_1 *      firmware_usage;
+        uint32_t start_addr, size;
         uint16_t data_offset;
         int usage_bytes = 0;
 
         if (amdgpu_atom_parse_data_header(ctx, index, NULL, NULL, NULL, &data_offset)) {
-                struct vram_usagebyfirmware_v2_1 *firmware_usage =
-                        (struct vram_usagebyfirmware_v2_1 *)(ctx->bios + data_offset);
-
+                firmware_usage = (struct vram_usagebyfirmware_v2_1 *)(ctx->bios + data_offset);
                 DRM_DEBUG("atom firmware requested %08x %dkb fw %dkb drv\n",
                           le32_to_cpu(firmware_usage->start_address_in_kb),
                           le16_to_cpu(firmware_usage->used_by_firmware_in_kb),
                           le16_to_cpu(firmware_usage->used_by_driver_in_kb));
 
-                usage_bytes = le16_to_cpu(firmware_usage->used_by_driver_in_kb) * 1024;
+                start_addr = le32_to_cpu(firmware_usage->start_address_in_kb);
+                size = le16_to_cpu(firmware_usage->used_by_firmware_in_kb);
+
+                if ((uint32_t)(start_addr & ATOM_VRAM_OPERATION_FLAGS_MASK) ==
+                        (uint32_t)(ATOM_VRAM_BLOCK_SRIOV_MSG_SHARE_RESERVATION <<
+                        ATOM_VRAM_OPERATION_FLAGS_SHIFT)) {
+                        /* Firmware request VRAM reservation for SR-IOV */
+                        adev->fw_vram_usage.start_offset = (start_addr &
+                                (~ATOM_VRAM_OPERATION_FLAGS_MASK)) << 10;
+                        adev->fw_vram_usage.size = size << 10;
+                        /* Use the default scratch size */
+                        usage_bytes = 0;
+                } else {
+                        usage_bytes = le16_to_cpu(firmware_usage->used_by_driver_in_kb) << 10;
+                }
         }
         ctx->scratch_size_bytes = 0;
         if (usage_bytes == 0)