drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c - linux - Git at Google

 /*
  * Copyright 2016 Advanced Micro Devices, Inc.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  */
 #include <drm/drmP.h>
 #include <drm/amdgpu_drm.h>
 #include "amdgpu.h"
 #include "atomfirmware.h"
 #include "amdgpu_atomfirmware.h"
 #include "atom.h"
 #include "atombios.h"

 #define get_index_into_master_table(master_table, table_name) (offsetof(struct master_table, table_name) / sizeof(uint16_t))

 bool amdgpu_atomfirmware_gpu_supports_virtualization(struct amdgpu_device *adev)
 {
 	int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
 						firmwareinfo);
 	uint16_t data_offset;

 	if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, NULL,
 					  NULL, NULL, &data_offset)) {
 		struct atom_firmware_info_v3_1 *firmware_info =
 			(struct atom_firmware_info_v3_1 *)(adev->mode_info.atom_context->bios +
 							   data_offset);

 		if (le32_to_cpu(firmware_info->firmware_capability) &
 		    ATOM_FIRMWARE_CAP_GPU_VIRTUALIZATION)
 			return true;
 	}
 	return false;
 }

 void amdgpu_atomfirmware_scratch_regs_init(struct amdgpu_device *adev)
 {
 	int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
 						firmwareinfo);
 	uint16_t data_offset;

 	if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, NULL,
 					  NULL, NULL, &data_offset)) {
 		struct atom_firmware_info_v3_1 *firmware_info =
 			(struct atom_firmware_info_v3_1 *)(adev->mode_info.atom_context->bios +
 							   data_offset);

 		adev->bios_scratch_reg_offset =
 			le32_to_cpu(firmware_info->bios_scratch_reg_startaddr);
 	}
 }

 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)) {
 		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));

 		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)
 		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;
 }

 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;
 }

 union firmware_info {
 	struct atom_firmware_info_v3_1 v31;
 };

 union smu_info {
 	struct atom_smu_info_v3_1 v31;
 };

 union umc_info {
 	struct atom_umc_info_v3_1 v31;
 };

 int amdgpu_atomfirmware_get_clock_info(struct amdgpu_device *adev)
 {
 	struct amdgpu_mode_info *mode_info = &adev->mode_info;
 	struct amdgpu_pll *spll = &adev->clock.spll;
 	struct amdgpu_pll *mpll = &adev->clock.mpll;
 	uint8_t frev, crev;
 	uint16_t data_offset;
 	int ret = -EINVAL, index;

 	index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
 					    firmwareinfo);
 	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
 				   &frev, &crev, &data_offset)) {
 		union firmware_info *firmware_info =
 			(union firmware_info *)(mode_info->atom_context->bios +
 						data_offset);

 		adev->clock.default_sclk =
 			le32_to_cpu(firmware_info->v31.bootup_sclk_in10khz);
 		adev->clock.default_mclk =
 			le32_to_cpu(firmware_info->v31.bootup_mclk_in10khz);

 		adev->pm.current_sclk = adev->clock.default_sclk;
 		adev->pm.current_mclk = adev->clock.default_mclk;

 		/* not technically a clock, but... */
 		adev->mode_info.firmware_flags =
 			le32_to_cpu(firmware_info->v31.firmware_capability);

 		ret = 0;
 	}

 	index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
 					    smu_info);
 	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
 				   &frev, &crev, &data_offset)) {
 		union smu_info *smu_info =
 			(union smu_info *)(mode_info->atom_context->bios +
 					   data_offset);

 		/* system clock */
 		spll->reference_freq = le32_to_cpu(smu_info->v31.core_refclk_10khz);

 		spll->reference_div = 0;
 		spll->min_post_div = 1;
 		spll->max_post_div = 1;
 		spll->min_ref_div = 2;
 		spll->max_ref_div = 0xff;
 		spll->min_feedback_div = 4;
 		spll->max_feedback_div = 0xff;
 		spll->best_vco = 0;

 		ret = 0;
 	}

 	index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
 					    umc_info);
 	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
 				   &frev, &crev, &data_offset)) {
 		union umc_info *umc_info =
 			(union umc_info *)(mode_info->atom_context->bios +
 					   data_offset);

 		/* memory clock */
 		mpll->reference_freq = le32_to_cpu(umc_info->v31.mem_refclk_10khz);

 		mpll->reference_div = 0;
 		mpll->min_post_div = 1;
 		mpll->max_post_div = 1;
 		mpll->min_ref_div = 2;
 		mpll->max_ref_div = 0xff;
 		mpll->min_feedback_div = 4;
 		mpll->max_feedback_div = 0xff;
 		mpll->best_vco = 0;

 		ret = 0;
 	}

 	return ret;
 }
	/*
	* Copyright 2016 Advanced Micro Devices, Inc.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	* OTHER DEALINGS IN THE SOFTWARE.
	*
	*/
	#include <drm/drmP.h>
	#include <drm/amdgpu_drm.h>
	#include "amdgpu.h"
	#include "atomfirmware.h"
	#include "amdgpu_atomfirmware.h"
	#include "atom.h"
	#include "atombios.h"

	#define get_index_into_master_table(master_table, table_name) (offsetof(struct master_table, table_name) / sizeof(uint16_t))

	bool amdgpu_atomfirmware_gpu_supports_virtualization(struct amdgpu_device *adev)
	{
	int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
	firmwareinfo);
	uint16_t data_offset;

	if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, NULL,
	NULL, NULL, &data_offset)) {
	struct atom_firmware_info_v3_1 *firmware_info =
	(struct atom_firmware_info_v3_1 *)(adev->mode_info.atom_context->bios +
	data_offset);

	if (le32_to_cpu(firmware_info->firmware_capability) &
	ATOM_FIRMWARE_CAP_GPU_VIRTUALIZATION)
	return true;
	}
	return false;
	}

	void amdgpu_atomfirmware_scratch_regs_init(struct amdgpu_device *adev)
	{
	int index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
	firmwareinfo);
	uint16_t data_offset;

	if (amdgpu_atom_parse_data_header(adev->mode_info.atom_context, index, NULL,
	NULL, NULL, &data_offset)) {
	struct atom_firmware_info_v3_1 *firmware_info =
	(struct atom_firmware_info_v3_1 *)(adev->mode_info.atom_context->bios +
	data_offset);

	adev->bios_scratch_reg_offset =
	le32_to_cpu(firmware_info->bios_scratch_reg_startaddr);
	}
	}

	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)) {
	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));

	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)
	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;
	}

	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;
	}

	union firmware_info {
	struct atom_firmware_info_v3_1 v31;
	};

	union smu_info {
	struct atom_smu_info_v3_1 v31;
	};

	union umc_info {
	struct atom_umc_info_v3_1 v31;
	};

	int amdgpu_atomfirmware_get_clock_info(struct amdgpu_device *adev)
	{
	struct amdgpu_mode_info *mode_info = &adev->mode_info;
	struct amdgpu_pll *spll = &adev->clock.spll;
	struct amdgpu_pll *mpll = &adev->clock.mpll;
	uint8_t frev, crev;
	uint16_t data_offset;
	int ret = -EINVAL, index;

	index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
	firmwareinfo);
	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
	&frev, &crev, &data_offset)) {
	union firmware_info *firmware_info =
	(union firmware_info *)(mode_info->atom_context->bios +
	data_offset);

	adev->clock.default_sclk =
	le32_to_cpu(firmware_info->v31.bootup_sclk_in10khz);
	adev->clock.default_mclk =
	le32_to_cpu(firmware_info->v31.bootup_mclk_in10khz);

	adev->pm.current_sclk = adev->clock.default_sclk;
	adev->pm.current_mclk = adev->clock.default_mclk;

	/* not technically a clock, but... */
	adev->mode_info.firmware_flags =
	le32_to_cpu(firmware_info->v31.firmware_capability);

	ret = 0;
	}

	index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
	smu_info);
	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
	&frev, &crev, &data_offset)) {
	union smu_info *smu_info =
	(union smu_info *)(mode_info->atom_context->bios +
	data_offset);

	/* system clock */
	spll->reference_freq = le32_to_cpu(smu_info->v31.core_refclk_10khz);

	spll->reference_div = 0;
	spll->min_post_div = 1;
	spll->max_post_div = 1;
	spll->min_ref_div = 2;
	spll->max_ref_div = 0xff;
	spll->min_feedback_div = 4;
	spll->max_feedback_div = 0xff;
	spll->best_vco = 0;

	ret = 0;
	}

	index = get_index_into_master_table(atom_master_list_of_data_tables_v2_1,
	umc_info);
	if (amdgpu_atom_parse_data_header(mode_info->atom_context, index, NULL,
	&frev, &crev, &data_offset)) {
	union umc_info *umc_info =
	(union umc_info *)(mode_info->atom_context->bios +
	data_offset);

	/* memory clock */
	mpll->reference_freq = le32_to_cpu(umc_info->v31.mem_refclk_10khz);

	mpll->reference_div = 0;
	mpll->min_post_div = 1;
	mpll->max_post_div = 1;
	mpll->min_ref_div = 2;
	mpll->max_ref_div = 0xff;
	mpll->min_feedback_div = 4;
	mpll->max_feedback_div = 0xff;
	mpll->best_vco = 0;

	ret = 0;
	}

	return ret;
	}