path: root/drivers/gpu/drm/radeon/atom.c

/*
 * 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
 */

#include <linux/module.h>
#include <linux/sched.h>

#define ATOM_DEBUG

#include "atom.h"
#include "atom-names.h"
#include "atom-bits.h"

#define ATOM_COND_ABOVE		0
#define ATOM_COND_ABOVEOREQUAL	1
#define ATOM_COND_ALWAYS	2
#define ATOM_COND_BELOW		3
#define ATOM_COND_BELOWOREQUAL	4
#define ATOM_COND_EQUAL		5
#define ATOM_COND_NOTEQUAL	6

#define ATOM_PORT_ATI	0
#define ATOM_PORT_PCI	1
#define ATOM_PORT_SYSIO	2

#define ATOM_UNIT_MICROSEC	0
#define ATOM_UNIT_MILLISEC	1

#define PLL_INDEX	2
#define PLL_DATA	3

typedef struct {
	struct atom_context *ctx;

	uint32_t *ps, *ws;
	int ps_shift;
	uint16_t start;
} atom_exec_context;

int atom_debug = 0;
void atom_execute_table(struct atom_context *ctx, int index, uint32_t * params);

static uint32_t atom_arg_mask[8] =
    { 0xFFFFFFFF, 0xFFFF, 0xFFFF00, 0xFFFF0000, 0xFF, 0xFF00, 0xFF0000,
0xFF000000 };
static int atom_arg_shift[8] = { 0, 0, 8, 16, 0, 8, 16, 24 };

static int atom_dst_to_src[8][4] = {
	/* translate destination alignment field to the source alignment encoding */
	{0, 0, 0, 0},
	{1, 2, 3, 0},
	{1, 2, 3, 0},
	{1, 2, 3, 0},
	{4, 5, 6, 7},
	{4, 5, 6, 7},
	{4, 5, 6, 7},
	{4, 5, 6, 7},
};
static int atom_def_dst[8] = { 0, 0, 1, 2, 0, 1, 2, 3 };

static int debug_depth = 0;
#ifdef ATOM_DEBUG
static void debug_print_spaces(int n)
{
	while (n--)
		printk("   ");
}

#define DEBUG(...) do if (atom_debug) { printk(KERN_DEBUG __VA_ARGS__); } while (0)
#define SDEBUG(...) do if (atom_debug) { printk(KERN_DEBUG); debug_print_spaces(debug_depth); printk(__VA_ARGS__); } while (0)
#else
#define DEBUG(...) do { } while (0)
#define SDEBUG(...) do { } while (0)
#endif

static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
				 uint32_t index, uint32_t data)
{
	uint32_t temp = 0xCDCDCDCD;
	while (1)
		switch (CU8(base)) {
		case ATOM_IIO_NOP:
			base++;
			break;
		case ATOM_IIO_READ:
			temp = ctx->card->reg_read(ctx->card, CU16(base + 1));
			base += 3;
			break;
		case ATOM_IIO_WRITE: