xref: /kernel/linux/linux-6.6/drivers/gpu/drm/radeon/atom.h

/*
 * Copyright 2008 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.
 *
 * Author: Stanislaw Skowronek
 */

#ifndef ATOM_H
#define ATOM_H

#include <linux/mutex.h>
#include <linux/types.h>

#define ATOM_BIOS_MAGIC		0xAA55
#define ATOM_ATI_MAGIC_PTR	0x30
#define ATOM_ATI_MAGIC		" 761295520"
#define ATOM_ROM_TABLE_PTR	0x48

#define ATOM_ROM_MAGIC		"ATOM"
#define ATOM_ROM_MAGIC_PTR	4

#define ATOM_ROM_MSG_PTR	0x10
#define ATOM_ROM_CMD_PTR	0x1E
#define ATOM_ROM_DATA_PTR	0x20

#define ATOM_CMD_INIT		0
#define ATOM_CMD_SETSCLK	0x0A
#define ATOM_CMD_SETMCLK	0x0B
#define ATOM_CMD_SETPCLK	0x0C
#define ATOM_CMD_SPDFANCNTL	0x39

#define ATOM_DATA_FWI_PTR	0xC
#define ATOM_DATA_IIO_PTR	0x32

#define ATOM_FWI_DEFSCLK_PTR	8
#define ATOM_FWI_DEFMCLK_PTR	0xC
#define ATOM_FWI_MAXSCLK_PTR	0x24
#define ATOM_FWI_MAXMCLK_PTR	0x28

#define ATOM_CT_SIZE_PTR	0
#define ATOM_CT_WS_PTR		4
#define ATOM_CT_PS_PTR		5
#define ATOM_CT_PS_MASK		0x7F
#define ATOM_CT_CODE_PTR	6

#define ATOM_OP_CNT		123
#define ATOM_OP_EOT		91

#define ATOM_CASE_MAGIC		0x63
#define ATOM_CASE_END		0x5A5A

#define ATOM_ARG_REG		0
#define ATOM_ARG_PS		1
#define ATOM_ARG_WS		2
#define ATOM_ARG_FB		3
#define ATOM_ARG_ID		4
#define ATOM_ARG_IMM		5
#define ATOM_ARG_PLL		6
#define ATOM_ARG_MC		7

#define ATOM_SRC_DWORD		0
#define ATOM_SRC_WORD0		1
#define ATOM_SRC_WORD8		2
#define ATOM_SRC_WORD16		3
#define ATOM_SRC_BYTE0		4
#define ATOM_SRC_BYTE8		5
#define ATOM_SRC_BYTE16		6
#define ATOM_SRC_BYTE24		7

#define ATOM_WS_QUOTIENT	0x40
#define ATOM_WS_REMAINDER	0x41
#define ATOM_WS_DATAPTR		0x42
#define ATOM_WS_SHIFT		0x43
#define ATOM_WS_OR_MASK		0x44
#define ATOM_WS_AND_MASK	0x45
#define ATOM_WS_FB_WINDOW	0x46
#define ATOM_WS_ATTRIBUTES	0x47
#define ATOM_WS_REGPTR  	0x48

#define ATOM_IIO_NOP		0
#define ATOM_IIO_START		1
#define ATOM_IIO_READ		2
#define ATOM_IIO_WRITE		3
#define ATOM_IIO_CLEAR		4
#define ATOM_IIO_SET		5
#define ATOM_IIO_MOVE_INDEX	6
#define ATOM_IIO_MOVE_ATTR	7
#define ATOM_IIO_MOVE_DATA	8
#define ATOM_IIO_END		9

#define ATOM_IO_MM		0
#define ATOM_IO_PCI		1
#define ATOM_IO_SYSIO		2
#define ATOM_IO_IIO		0x80

struct card_info {
	struct drm_device *dev;
	void (* reg_write)(struct card_info *, uint32_t, uint32_t);   /*  filled by driver */
        uint32_t (* reg_read)(struct card_info *, uint32_t);          /*  filled by driver */
	void (* ioreg_write)(struct card_info *, uint32_t, uint32_t);   /*  filled by driver */
        uint32_t (* ioreg_read)(struct card_info *, uint32_t);          /*  filled by driver */
	void (* mc_write)(struct card_info *, uint32_t, uint32_t);   /*  filled by driver */
        uint32_t (* mc_read)(struct card_info *, uint32_t);          /*  filled by driver */
	void (* pll_write)(struct card_info *, uint32_t, uint32_t);   /*  filled by driver */
        uint32_t (* pll_read)(struct card_info *, uint32_t);          /*  filled by driver */
};

struct atom_context {
	struct card_info *card;
	struct mutex mutex;
	struct mutex scratch_mutex;
	void *bios;
	uint32_t cmd_table, data_table;
	uint16_t *iio;

	uint16_t data_block;
	uint32_t fb_base;
	uint32_t divmul[2];
	uint16_t io_attr;
	uint16_t reg_block;
	uint8_t shift;
	int cs_equal, cs_above;
	int io_mode;
	uint32_t *scratch;
	int scratch_size_bytes;
};

extern int atom_debug;

struct atom_context *atom_parse(struct card_info *, void *);
int atom_execute_table(struct atom_context *, int, uint32_t *);
int atom_execute_table_scratch_unlocked(struct atom_context *, int, uint32_t *);
int atom_asic_init(struct atom_context *);
void atom_destroy(struct atom_context *);
bool atom_parse_data_header(struct atom_context *ctx, int index, uint16_t *size,
			    uint8_t *frev, uint8_t *crev, uint16_t *data_start);
bool atom_parse_cmd_header(struct atom_context *ctx, int index,
			   uint8_t *frev, uint8_t *crev);
int atom_allocate_fb_scratch(struct atom_context *ctx);

struct i2c_msg;
struct i2c_adapter;
int radeon_atom_hw_i2c_xfer(struct i2c_adapter *i2c_adap,
			    struct i2c_msg *msgs, int num);
u32 radeon_atom_hw_i2c_func(struct i2c_adapter *adap);

#include "atom-types.h"
#include "atombios.h"
#include "ObjectID.h"

#endif