path: root/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c

/*
 * Copyright 2019 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.
 *
 * Authors: AMD
 *
 */

#include "../dmub_srv.h"
#include "dmub_dcn20.h"
#include "dmub_dcn21.h"
#include "dmub_cmd.h"
#include "dmub_dcn30.h"
#include "dmub_dcn301.h"
#include "dmub_dcn302.h"
#include "dmub_dcn303.h"
#include "dmub_dcn31.h"
#include "dmub_dcn314.h"
#include "dmub_dcn315.h"
#include "dmub_dcn316.h"
#include "dmub_dcn32.h"
#include "dmub_dcn35.h"
#include "dmub_dcn351.h"
#include "dmub_dcn401.h"
#include "os_types.h"
/*
 * Note: the DMUB service is standalone. No additional headers should be
 * added below or above this line unless they reside within the DMUB
 * folder.
 */

/* Alignment for framebuffer memory. */
#define DMUB_FB_ALIGNMENT (1024 * 1024)

/* Stack size. */
#define DMUB_STACK_SIZE (128 * 1024)

/* Context size. */
#define DMUB_CONTEXT_SIZE (512 * 1024)

/* Mailbox size : Ring buffers are required for both inbox and outbox */
#define DMUB_MAILBOX_SIZE ((2 * DMUB_RB_SIZE))

/* Default state size if meta is absent. */
#define DMUB_FW_STATE_SIZE (64 * 1024)

/* Default tracebuffer size if meta is absent. */
#define DMUB_TRACE_BUFFER_SIZE (64 * 1024)


/* Default scratch mem size. */
#define DMUB_SCRATCH_MEM_SIZE (1024)

/* Number of windows in use. */
#define DMUB_NUM_WINDOWS (DMUB_WINDOW_TOTAL)
/* Base addresses. */

#define DMUB_CW0_BASE (0x60000000)
#define DMUB_CW1_BASE (0x61000000)
#define DMUB_CW3_BASE (0x63000000)
#define DMUB_CW4_BASE (0x64000000)
#define DMUB_CW5_BASE (0x65000000)
#define DMUB_CW6_BASE (0x66000000)

#define DMUB_REGION5_BASE (0xA0000000)
#define DMUB_REGION6_BASE (0xC0000000)

static struct dmub_srv_dcn32_regs dmub_srv_dcn32_regs;
static struct dmub_srv_dcn35_regs dmub_srv_dcn35_regs;

static inline uint32_t dmub_align(uint32_t val, uint32_t factor)
{
	return (val + factor - 1) / factor * factor;
}

void dmub_flush_buffer_mem(const struct dmub_fb *fb)
{
	const uint8_t *base = (const uint8_t *)fb->cpu_addr;
	uint8_t buf[64];
	uint32_t pos, end;

	/**
	 * Read 64-byte chunks since we don't want to store a
	 * large temporary buffer for this purpose.
	 */
	end = fb->size / sizeof(buf) * sizeof(buf);

	for (pos = 0; pos < end; pos += sizeof(buf))
		dmub_memcpy(buf, base + pos, sizeof(buf));

	/* Read anything leftover into the buffer. */
	if (end < fb->size)
		dmub_memcpy(buf, base + pos, fb->size - end);
}

static const struct dmub_fw_meta_info *
dmub_get_fw_meta_info_from_blob(const uint8_t *blob, uint32_t blob_size, uint32_t meta_offset)
{
	const union dmub_fw_meta *meta;

	if (!blob || !blob_size)
		return NULL;

	if (blob_size < sizeof(union dmub_fw_meta) + meta_offset)
		return NULL;

	meta = (const union dmub_fw_meta *)(blob + blob_size - meta_offset -
					    sizeof(union dmub_fw_meta));

	if (meta->info.magic_value != DMUB_FW_META_MAGIC)
		return NULL;

	return &meta->info;
}

static const struct dmub_fw_meta_info *
dmub_get_fw_meta_info(const struct dmub_srv_region_params *params)
{
	const struct dmub_fw_meta_info *info = NULL;

	if (params->fw_bss_data && params->bss_data_size) {
		/* Legacy metadata region. */
		info = dmub_get_fw_meta_info_from_blob(params->fw_bss_data,
						       params->bss_data_size,
						       DMUB_FW_META_OFFSET);
	} else if (params->fw_inst_const && params->inst_const_size) {
		/* Combined metadata region - can be aligned to 16-bytes. */
		uint32_t i;

		for (i = 0; i < 16; ++i) {
			info = dmub_get_fw_meta_info_from_blob(
				params->fw_inst_const, params->inst_const_size, i);

			if (info)
				break;
		}
	}

	return info