drm/amdgpu/nv: add asic func for fetching vbios from rom directly (f8a69a80) · Commits · 戴 / test

drivers/gpu/drm/amd/amdgpu/nv.c

+22 −2

Original line number	Diff line number	Diff line
		@@ -40,6 +40,7 @@
		#include "gc/gc_10_1_0_sh_mask.h"
		#include "hdp/hdp_5_0_0_offset.h"
		#include "hdp/hdp_5_0_0_sh_mask.h"
		#include "smuio/smuio_11_0_0_offset.h"

		#include "soc15.h"
		#include "soc15_common.h"
		@@ -156,8 +157,27 @@ static bool nv_read_disabled_bios(struct amdgpu_device *adev)
		static bool nv_read_bios_from_rom(struct amdgpu_device *adev,
		u8 *bios, u32 length_bytes)
		{
		/* TODO: will implement it when SMU header is available */
		u32 *dw_ptr;
		u32 i, length_dw;

		if (bios == NULL)
		return false;
		if (length_bytes == 0)
		return false;
		/* APU vbios image is part of sbios image */
		if (adev->flags & AMD_IS_APU)
		return false;

		dw_ptr = (u32 *)bios;
		length_dw = ALIGN(length_bytes, 4) / 4;

		/* set rom index to 0 */
		WREG32(SOC15_REG_OFFSET(SMUIO, 0, mmROM_INDEX), 0);
		/* read out the rom data */
		for (i = 0; i < length_dw; i++)
		dw_ptr[i] = RREG32(SOC15_REG_OFFSET(SMUIO, 0, mmROM_DATA));

		return true;
		}

		static struct soc15_allowed_register_entry nv_allowed_read_registers[] = {