[pcsx_rearmed.git] / frontend / plat_pollux.c

/*
 * (C) Gražvydas "notaz" Ignotas, 2009-2011
 *
 * This work is licensed under the terms of the GNU GPLv2 or later.
 * See the COPYING file in the top-level directory.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <linux/fb.h>
#include <sys/mman.h>

#include "common/input.h"
#include "common/menu.h"
#include "warm/warm.h"
#include "plugin_lib.h"
#include "cspace.h"
#include "blit320.h"
#include "in_tsbutton.h"
#include "main.h"
#include "menu.h"
#include "plat.h"
#include "pcnt.h"

static int fbdev = -1, memdev = -1, battdev = -1;
static volatile unsigned short *memregs;
static volatile unsigned int   *memregl;
static void *fb_vaddrs[2];
static unsigned int fb_paddrs[2];
static int fb_work_buf;
static int cpu_clock_allowed, have_warm;
static unsigned int saved_video_regs[2][6];
#define FB_VRAM_SIZE (320*240*2*2*2) // 2 buffers with space for 24bpp mode

static unsigned short *psx_vram;
static unsigned int psx_vram_padds[512];
static int psx_step, psx_width, psx_height, psx_bpp;
static int psx_offset_x, psx_offset_y;
static int fb_offset_x, fb_offset_y;

// TODO: get rid of this
struct vout_fbdev;
struct vout_fbdev *layer_fb;
int g_layer_x, g_layer_y, g_layer_w, g_layer_h;

int omap_enable_layer(int enabled)
{
	return 0;
}

static void *fb_flip(void)
{
	memregl[0x406C>>2] = memregl[0x446C>>2] = fb_paddrs[fb_work_buf];
	memregl[0x4058>>2] |= 0x10;
	memregl[0x4458>>2] |= 0x10;
	fb_work_buf ^= 1;
	return fb_vaddrs[fb_work_buf];
}

static void pollux_changemode(int bpp, int is_bgr)
{
	int code = 0, bytes = 2;
	unsigned int r;

	printf("changemode: %dbpp %s\n", bpp, is_bgr ? "bgr" : "rgb");

	memregl[0x4004>>2] = 0x00ef013f;
	memregl[0x4000>>2] |= 1 << 3;

	switch (bpp)
	{
		case 8:
			code = 0x443a;
			bytes = 1;
			break;
		case 16:
			code = is_bgr ? 0xc342 : 0x4432;
			bytes = 2;
			break;
		case 24:
			code = is_bgr ? 0xc653 : 0x4653;
			bytes = 3;
			break;
		default:
			printf("unhandled bpp request: %d\n", bpp);
			return;
	}

	// program both MLCs so that TV-out works
	memregl[0x405c>>2] = memregl[0x445c>>2] = bytes;
	memregl[0x4060>>2] = memregl[0x4460>>2] = 320 * bytes;

	r = memregl[0x4058>>2];
	r = (r & 0xffff) | (code << 16) | 0x10;
	memregl[0x4058>>2] = r;

	r = memregl[0x4458>>2];
	r = (r & 0xffff) | (code << 16) | 0x10;
	memregl[0x4458>>2] = r;
}

/* note: both PLLs are programmed the same way,
 * the databook incorrectly states that PLL1 differs */
static int decode_pll(unsigned int reg)
{
	long long v;
	int p, m, s;

	p = (reg >> 18) & 0x3f;
	m = (reg >> 8) & 0x3ff;
	s = reg & 0xff;

	if (p == 0)
		p = 1;

	v = 27000000; // master clock
	v = v * m / (p << s);
	return v;
}

int plat_cpu_clock_get(void)
{
	return decode_pll(memregl[0xf004>>2]) / 1000000;
}

int plat_cpu_clock_apply(int mhz)
{
	int adiv, mdiv, pdiv, sdiv = 0;
	int i, vf000, vf004;

	if (!cpu_clock_allowed)
		return -1;
	if (mhz == plat_cpu_clock_get())
		return 0;

	// m = MDIV, p = PDIV, s = SDIV
	#define SYS_CLK_FREQ 27
	pdiv = 9;
	mdiv = (mhz * pdiv) / SYS_CLK_FREQ;
	if (mdiv & ~0x3ff)
		return -1;
	vf004 = (pdiv<<18) | (mdiv<<8) | sdiv;

	// attempt to keep the AHB divider close to 250, but not higher
	for (adiv = 1; mhz / adiv > 250; adiv++)
		;

	vf000 = memregl[0xf000>>2];
	vf000 = (vf000 & ~0x3c0) | ((adiv - 1) << 6);
	memregl[0xf000>>2] = vf000;
	memregl[0xf004>>2] = vf004;
	memregl[0xf07c>>2] |= 0x8000;
	for (i = 0; (memregl[0xf07c>>2] & 0x8000) && i < 0x100000; i++)
		;

	printf("clock set to %dMHz, AHB set to %dMHz\n", mhz, mhz / adiv);

	// stupid pll share hack - must restart audio
	extern long SPUopen(void);
	extern long SPUclose(void);
	SPUclose();
	SPUopen();

	return 0;
}

int plat_get_bat_capacity(void)
{
	unsigned short magic_val = 0;

	if (battdev < 0)
		return -1;
	if (read(battdev, &magic_val, sizeof(magic_val)) != sizeof(magic_val))
		return -1;
	switch (magic_val) {
	default:
	case 1:	return 100;
	case 2: return 66;
	case 3: return 40;
	case 4: return 0;
	}
}

#define TIMER_BASE3 0x1980
#define TIMER_REG(x) memregl[(TIMER_BASE3 + x) >> 2]

static __attribute__((unused)) unsigned int timer_get(void)
{
	TIMER_REG(0x08) |= 0x48;  /* run timer, latch value */
	return TIMER_REG(0);
}

static void timer_cleanup(void)
{
	TIMER_REG(0x40) = 0x0c;	/* be sure clocks are on */
	TIMER_REG(0x08) = 0x23;	/* stop the timer, clear irq in case it's pending */
	TIMER_REG(0x00) = 0;	/* clear counter */
	TIMER_REG(0x40) = 0;	/* clocks off */
	TIMER_REG(0x44) = 0;	/* dividers back to default */
}

void plat_video_menu_enter(int is_rom_loaded)
{
	if (pl_vout_buf != NULL) {
		if (psx_bpp == 16)
			// have to do rgb conversion for menu bg
			bgr555_to_rgb565(pl_vout_buf, pl_vout_buf, 320*240*2);
		else
			memset(pl_vout_buf, 0, 320*240*2);
	}

	pollux_changemode(16, 0);
}

void plat_video_menu_begin(void)
{
}

void plat_video_menu_end(void)
{
	g_menuscreen_ptr = fb_flip();
}

void plat_video_menu_leave(void)
{
	if (psx_vram == NULL) {
		fprintf(stderr, "GPU plugin did not provide vram\n");
		exit(1);
	}

	in_set_config_int(in_name_to_id("evdev:pollux-analog"),
			IN_CFG_ABS_DEAD_ZONE, analog_deadzone);

	memset(g_menuscreen_ptr, 0, 320*240 * psx_bpp/8);
	g_menuscreen_ptr = fb_flip();
	memset(g_menuscreen_ptr, 0, 320*240 * psx_bpp/8);

	pollux_changemode(psx_bpp, 1);
}

static void pl_vout_set_raw_vram(void *vram)
{
	int i;

	psx_vram = vram;

	if (vram == NULL)
		return;

	if ((long)psx_vram & 0x7ff)
		fprintf(stderr, "GPU plugin did not align vram\n");

	for (i = 0; i < 512; i++) {
		psx_vram[i * 1024] = 0; // touch
		psx_vram_padds[i] = warm_virt2phys(&psx_vram[i * 1024]);
	}
}

static void spend_cycles(int loops)
{
	asm volatile (
		"   mov  r0,%0    ;\n"
		"0: subs r0,r0,#1 ;\n"
		"   bgt  0b"
		:: "r" (loops) : "cc", "r0");
}

#define DMA_BASE6 0x0300
#define DMA_REG(x) memregl[(DMA_BASE6 + x) >> 2]

/* this takes ~1.5ms, while ldm/stm ~1.95ms */
static void raw_flip_dma(int x, int y)
{
	unsigned int dst = fb_paddrs[fb_work_buf] +
			(fb_offset_y * 320 + fb_offset_x) * psx_bpp / 8;
	int spsx_line = y + psx_offset_y;
	int spsx_offset = (x + psx_offset_x) & 0x3f8;
	int dst_stride = 320 * psx_bpp / 8;
	int len = psx_width * psx_bpp / 8;
	int i;

	warm_cache_op_all(WOP_D_CLEAN);
	pcnt_start(PCNT_BLIT);

	dst &= ~7;
	len &= ~7;

	if (DMA_REG(0x0c) & 0x90000) {
		printf("already runnig DMA?\n");
		DMA_REG(0x0c) = 0x100000;
	}
	if ((DMA_REG(0x2c) & 0x0f) < 5) {
		printf("DMA queue busy?\n");
		DMA_REG(0x24) = 1;
	}

	for (i = psx_height; i > 0; i--, spsx_line += psx_step, dst += dst_stride) {
		while ((DMA_REG(0x2c) & 0x0f) < 4)
			spend_cycles(10);

		// XXX: it seems we must always set all regs, what is autoincrement there for?
		DMA_REG(0x20) = 1;		// queue wait cmd
		DMA_REG(0x10) = psx_vram_padds[spsx_line & 511] + spsx_offset * 2; // DMA src
		DMA_REG(0x14) = dst;		// DMA dst
		DMA_REG(0x18) = len - 1;	// len
		DMA_REG(0x1c) = 0x80000;	// go
	}

	if (psx_bpp == 16) {
		pl_vout_buf = g_menuscreen_ptr;
		pl_print_hud(320, fb_offset_y + psx_height, fb_offset_x);
	}

	g_menuscreen_ptr = fb_flip();
	pl_flip_cnt++;

	pcnt_end(PCNT_BLIT);
}

#define make_flip_func(name, blitfunc)                                                  \
static void name(int x, int y)                                                          \
{                                                                                       \
        unsigned short *vram = psx_vram;                                                \
        unsigned char *dst = (unsigned char *)g_menuscreen_ptr +                        \
                        (fb_offset_y * 320 + fb_offset_x) * psx_bpp / 8;                \
        unsigned int src = (y + psx_offset_y) * 1024 + x + psx_offset_x;                \
        int dst_stride = 320 * psx_bpp / 8;                                             \
        int len = psx_width * psx_bpp / 8;                                              \
        int i;                                                                          \
                                                                                        \
        pcnt_start(PCNT_BLIT);                                                          \
                                                                                        \
        for (i = psx_height; i > 0; i--, src += psx_step * 1024, dst += dst_stride) {   \
                src &= 1024*512-1;                                                      \
                blitfunc(dst, vram + src, len);                                         \
        }                                                                               \
                                                                                        \
        if (psx_bpp == 16) {                                                            \
                pl_vout_buf = g_menuscreen_ptr;                                         \
                pl_print_hud(320, fb_offset_y + psx_height, fb_offset_x);               \
        }                                                                               \
                                                                                        \
        g_menuscreen_ptr = fb_flip();                                                   \
        pl_flip_cnt++;                                                                  \
                                                                                        \
        pcnt_end(PCNT_BLIT);                                                            \
}

make_flip_func(raw_flip_soft, memcpy)
make_flip_func(raw_flip_soft_368, blit320_368)
make_flip_func(raw_flip_soft_512, blit320_512)
make_flip_func(raw_flip_soft_640, blit320_640)

static void *pl_vout_set_mode(int w, int h, int bpp)
{
	static int old_w, old_h, old_bpp;
	int poff_w, poff_h, w_max;

	if (!w || !h || !bpp || (w == old_w && h == old_h && bpp == old_bpp))
		return NULL;

	printf("psx mode: %dx%d@%d\n", w, h, bpp);

	switch (w + (bpp != 16)) {
	case 640:
		pl_rearmed_cbs.pl_vout_raw_flip = raw_flip_soft_640;
		w_max = 640;
		break;
	case 512:
		pl_rearmed_cbs.pl_vout_raw_flip = raw_flip_soft_512;
		w_max = 512;
		break;
	case 384:
	case 368:
		pl_rearmed_cbs.pl_vout_raw_flip = raw_flip_soft_368;
		w_max = 368;
		break;
	default:
		pl_rearmed_cbs.pl_vout_raw_flip = have_warm ? raw_flip_dma : raw_flip_soft;
		w_max = 320;
		break;
	}

	psx_step = 1;
	if (h > 256) {
		psx_step = 2;
		h /= 2;
	}

	poff_w = poff_h = 0;
	if (w > w_max) {
		poff_w = w / 2 - w_max / 2;
		w = w_max;
	}
	fb_offset_x = 0;
	if (w < 320)
		fb_offset_x = 320/2 - w / 2;
	if (h > 240) {
		poff_h = h / 2 - 240/2;
		h = 240;
	}
	fb_offset_y = 240/2 - h / 2;

	psx_offset_x = poff_w;
	psx_offset_y = poff_h;
	psx_width = w;
	psx_height = h;
	psx_bpp = bpp;

	if (fb_offset_x || fb_offset_y) {
		// not fullscreen, must clear borders
		memset(g_menuscreen_ptr, 0, 320*240 * psx_bpp/8);
		g_menuscreen_ptr = fb_flip();
		memset(g_menuscreen_ptr, 0, 320*240 * psx_bpp/8);
	}

	pollux_changemode(bpp, 1);

	return NULL;
}

static void *pl_vout_flip(void)
{
	return NULL;
}

static void save_multiple_regs(unsigned int *dest, int base, int count)
{
	const volatile unsigned int *regs = memregl + base / 4;
	int i;

	for (i = 0; i < count; i++)
		dest[i] = regs[i];
}

static void restore_multiple_regs(int base, const unsigned int *src, int count)
{
	volatile unsigned int *regs = memregl + base / 4;
	int i;

	for (i = 0; i < count; i++)
		regs[i] = src[i];
}

void plat_init(void)
{
	const char *main_fb_name = "/dev/fb0";
	struct fb_fix_screeninfo fbfix;
	int rate, timer_div, timer_div2;
	int fbdev, ret, warm_ret;

	memdev = open("/dev/mem", O_RDWR);
	if (memdev == -1) {
		perror("open(/dev/mem) failed");
		exit(1);
	}

	memregs	= mmap(0, 0x20000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);
	if (memregs == MAP_FAILED) {
		perror("mmap(memregs) failed");
		exit(1);
	}
	memregl = (volatile void *)memregs;

	// save video regs of both MLCs
	save_multiple_regs(saved_video_regs[0], 0x4058, ARRAY_SIZE(saved_video_regs[0]));
	save_multiple_regs(saved_video_regs[1], 0x4458, ARRAY_SIZE(saved_video_regs[1]));

	fbdev = open(main_fb_name, O_RDWR);
	if (fbdev == -1) {
		fprintf(stderr, "%s: ", main_fb_name);
		perror("open");
		exit(1);
	}

	ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
	if (ret == -1) {
		perror("ioctl(fbdev) failed");
		exit(1);
	}
	printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
	fb_paddrs[0] = fbfix.smem_start;
	fb_paddrs[1] = fb_paddrs[0] + 320*240*4; // leave space for 24bpp

	fb_vaddrs[0] = mmap(0, FB_VRAM_SIZE, PROT_READ|PROT_WRITE,
				MAP_SHARED, memdev, fb_paddrs[0]);
	if (fb_vaddrs[0] == MAP_FAILED) {
		perror("mmap(fb_vaddrs) failed");
		exit(1);
	}
	fb_vaddrs[1] = (char *)fb_vaddrs[0] + 320*240*4;

	pollux_changemode(16, 0);
	g_menuscreen_w = 320;
	g_menuscreen_h = 240;
	g_menuscreen_ptr = fb_flip();

	g_menubg_ptr = calloc(320*240*2, 1);
	if (g_menubg_ptr == NULL) {
		fprintf(stderr, "OOM\n");
		exit(1);
	}

	warm_ret = warm_init();
	have_warm = warm_ret == 0;
	warm_change_cb_upper(WCB_B_BIT, 1);

	/* some firmwares have sys clk on PLL0, we can't adjust CPU clock
	 * by reprogramming the PLL0 then, as it overclocks system bus */
	if ((memregl[0xf000>>2] & 0x03000030) == 0x01000000)
		cpu_clock_allowed = 1;
	else {
		cpu_clock_allowed = 0;
		fprintf(stderr, "unexpected PLL config (%08x), overclocking disabled\n",
			memregl[0xf000>>2]);
	}

	/* find what PLL1 runs at, for the timer */
	rate = decode_pll(memregl[0xf008>>2]);
	printf("PLL1 @ %dHz\n", rate);

	/* setup timer */
	timer_div = (rate + 500000) / 1000000;
	timer_div2 = 0;
	while (timer_div > 256) {
		timer_div /= 2;
		timer_div2++;
	}
	if (1 <= timer_div && timer_div <= 256 && timer_div2 < 4) {
		int timer_rate = (rate >> timer_div2) / timer_div;
		if (TIMER_REG(0x08) & 8) {
			fprintf(stderr, "warning: timer in use, overriding!\n");
			timer_cleanup();
		}
		if (timer_rate != 1000000)
			fprintf(stderr, "warning: timer drift %d us\n", timer_rate - 1000000);

		timer_div2 = (timer_div2 + 3) & 3;
		TIMER_REG(0x44) = ((timer_div - 1) << 4) | 2;	/* using PLL1 */
		TIMER_REG(0x40) = 0x0c;				/* clocks on */
		TIMER_REG(0x08) = 0x68 | timer_div2;		/* run timer, clear irq, latch value */
	}
	else
		fprintf(stderr, "warning: could not make use of timer\n");

	/* setup DMA */
	DMA_REG(0x0c) = 0x20000; // pending IRQ clear

	battdev = open("/dev/pollux_batt", O_RDONLY);
	if (battdev < 0)
		perror("Warning: could't open pollux_batt");

	pl_rearmed_cbs.pl_vout_flip = pl_vout_flip;
	pl_rearmed_cbs.pl_vout_raw_flip = have_warm ? raw_flip_dma : raw_flip_soft;
	pl_rearmed_cbs.pl_vout_set_mode = pl_vout_set_mode;
	pl_rearmed_cbs.pl_vout_set_raw_vram = pl_vout_set_raw_vram;

	psx_width = 320;
	psx_height = 240;
	psx_bpp = 16;

	in_tsbutton_init();
}

void plat_finish(void)
{
	warm_finish();
	timer_cleanup();

	memset(fb_vaddrs[0], 0, FB_VRAM_SIZE);
	restore_multiple_regs(0x4058, saved_video_regs[0], ARRAY_SIZE(saved_video_regs[0]));
	restore_multiple_regs(0x4458, saved_video_regs[1], ARRAY_SIZE(saved_video_regs[1]));
	memregl[0x4058>>2] |= 0x10;
	memregl[0x4458>>2] |= 0x10;
	munmap(fb_vaddrs[0], FB_VRAM_SIZE);
	close(fbdev);

	if (battdev >= 0)
		close(battdev);
	munmap((void *)memregs, 0x20000);
	close(memdev);
}

void in_update_analogs(void)
{
}

/* Caanoo stuff, perhaps move later */
#include <linux/input.h>

struct in_default_bind in_evdev_defbinds[] = {
	{ KEY_UP,	IN_BINDTYPE_PLAYER12, DKEY_UP },
	{ KEY_DOWN,	IN_BINDTYPE_PLAYER12, DKEY_DOWN },
	{ KEY_LEFT,	IN_BINDTYPE_PLAYER12, DKEY_LEFT },
	{ KEY_RIGHT,	IN_BINDTYPE_PLAYER12, DKEY_RIGHT },
	{ BTN_TOP,	IN_BINDTYPE_PLAYER12, DKEY_TRIANGLE },
	{ BTN_THUMB,	IN_BINDTYPE_PLAYER12, DKEY_CROSS },
	{ BTN_THUMB2,	IN_BINDTYPE_PLAYER12, DKEY_CIRCLE },
	{ BTN_TRIGGER,	IN_BINDTYPE_PLAYER12, DKEY_SQUARE },
	{ BTN_BASE3,	IN_BINDTYPE_PLAYER12, DKEY_START },
	{ BTN_BASE4,	IN_BINDTYPE_PLAYER12, DKEY_SELECT },
	{ BTN_TOP2,	IN_BINDTYPE_PLAYER12, DKEY_L1 },
	{ BTN_PINKIE,	IN_BINDTYPE_PLAYER12, DKEY_R1 },
	{ BTN_BASE,	IN_BINDTYPE_EMU, SACTION_ENTER_MENU },
	{ 0, 0, 0 },
};

static const char * const caanoo_keys[KEY_MAX + 1] = {
	[0 ... KEY_MAX] = NULL,
	[KEY_UP]        = "Up",
	[KEY_LEFT]      = "Left",
	[KEY_RIGHT]     = "Right",
	[KEY_DOWN]      = "Down",
	[BTN_TRIGGER]   = "A",
	[BTN_THUMB]     = "X",
	[BTN_THUMB2]    = "B",
	[BTN_TOP]       = "Y",
	[BTN_TOP2]      = "L",
	[BTN_PINKIE]    = "R",
	[BTN_BASE]      = "Home",
	[BTN_BASE2]     = "Lock",
	[BTN_BASE3]     = "I",
	[BTN_BASE4]     = "II",
	[BTN_BASE5]     = "Push",
};

int plat_rescan_inputs(void)
{
	in_probe();
	in_set_config(in_name_to_id("evdev:pollux-analog"), IN_CFG_KEY_NAMES,
		      caanoo_keys, sizeof(caanoo_keys));
	return 0;
}
Commit	Line	Data
55b0eeea	1	/*
	2	* (C) Gražvydas "notaz" Ignotas, 2009-2011
	3	*
	4	* This work is licensed under the terms of the GNU GPLv2 or later.
	5	* See the COPYING file in the top-level directory.
	6	*/
	7
	8	#include <stdio.h>
	9	#include <stdlib.h>
	10	#include <string.h>
	11	#include <sys/types.h>
	12	#include <sys/stat.h>
	13	#include <fcntl.h>
	14	#include <sys/ioctl.h>
	15	#include <unistd.h>
	16	#include <linux/fb.h>
	17	#include <sys/mman.h>
	18
	19	#include "common/input.h"
	20	#include "common/menu.h"
	21	#include "warm/warm.h"
	22	#include "plugin_lib.h"
	23	#include "cspace.h"
02ee7e24	24	#include "blit320.h"
faf2b2aa	25	#include "in_tsbutton.h"
55b0eeea	26	#include "main.h"
	27	#include "menu.h"
	28	#include "plat.h"
d3f3bf09	29	#include "pcnt.h"
55b0eeea	30
	31	static int fbdev = -1, memdev = -1, battdev = -1;
	32	static volatile unsigned short *memregs;
	33	static volatile unsigned int *memregl;
	34	static void *fb_vaddrs[2];
	35	static unsigned int fb_paddrs[2];
	36	static int fb_work_buf;
02ee7e24	37	static int cpu_clock_allowed, have_warm;
0b6c6da8	38	static unsigned int saved_video_regs[2][6];
0b6c6da8	39	#define FB_VRAM_SIZE (320240222) // 2 buffers with space for 24bpp mode
55b0eeea	40
	41	static unsigned short *psx_vram;
	42	static unsigned int psx_vram_padds[512];
02ee7e24	43	static int psx_step, psx_width, psx_height, psx_bpp;
02ee7e24	44	static int psx_offset_x, psx_offset_y;
41f55c9f	45	static int fb_offset_x, fb_offset_y;
55b0eeea	46
	47	// TODO: get rid of this
	48	struct vout_fbdev;
	49	struct vout_fbdev *layer_fb;
	50	int g_layer_x, g_layer_y, g_layer_w, g_layer_h;
	51
	52	int omap_enable_layer(int enabled)
	53	{
	54	return 0;
	55	}
	56
	57	static void *fb_flip(void)
	58	{
0b6c6da8	59	memregl[0x406C>>2] = memregl[0x446C>>2] = fb_paddrs[fb_work_buf];
55b0eeea	60	memregl[0x4058>>2] \|= 0x10;
0b6c6da8	61	memregl[0x4458>>2] \|= 0x10;
55b0eeea	62	fb_work_buf ^= 1;
	63	return fb_vaddrs[fb_work_buf];
	64	}
	65
	66	static void pollux_changemode(int bpp, int is_bgr)
	67	{
	68	int code = 0, bytes = 2;
	69	unsigned int r;
	70
	71	printf("changemode: %dbpp %s\n", bpp, is_bgr ? "bgr" : "rgb");
	72
	73	memregl[0x4004>>2] = 0x00ef013f;
	74	memregl[0x4000>>2] \|= 1 << 3;
	75
	76	switch (bpp)
	77	{
	78	case 8:
	79	code = 0x443a;
	80	bytes = 1;
	81	break;
	82	case 16:
	83	code = is_bgr ? 0xc342 : 0x4432;
	84	bytes = 2;
	85	break;
	86	case 24:
	87	code = is_bgr ? 0xc653 : 0x4653;
	88	bytes = 3;
	89	break;
	90	default:
	91	printf("unhandled bpp request: %d\n", bpp);
	92	return;
	93	}
	94
0b6c6da8	95	// program both MLCs so that TV-out works
	96	memregl[0x405c>>2] = memregl[0x445c>>2] = bytes;
	97	memregl[0x4060>>2] = memregl[0x4460>>2] = 320 * bytes;
55b0eeea	98
	99	r = memregl[0x4058>>2];
	100	r = (r & 0xffff) \| (code << 16) \| 0x10;
	101	memregl[0x4058>>2] = r;
0b6c6da8	102
	103	r = memregl[0x4458>>2];
	104	r = (r & 0xffff) \| (code << 16) \| 0x10;
	105	memregl[0x4458>>2] = r;
55b0eeea	106	}
	107
	108	/* note: both PLLs are programmed the same way,
	109	* the databook incorrectly states that PLL1 differs */
	110	static int decode_pll(unsigned int reg)
	111	{
	112	long long v;
	113	int p, m, s;
	114
	115	p = (reg >> 18) & 0x3f;
	116	m = (reg >> 8) & 0x3ff;
	117	s = reg & 0xff;
	118
	119	if (p == 0)
	120	p = 1;
	121
	122	v = 27000000; // master clock
	123	v = v * m / (p << s);
	124	return v;
	125	}
	126
	127	int plat_cpu_clock_get(void)
	128	{
	129	return decode_pll(memregl[0xf004>>2]) / 1000000;
	130	}
	131
	132	int plat_cpu_clock_apply(int mhz)
	133	{
	134	int adiv, mdiv, pdiv, sdiv = 0;
	135	int i, vf000, vf004;
	136
	137	if (!cpu_clock_allowed)
	138	return -1;
	139	if (mhz == plat_cpu_clock_get())
	140	return 0;
	141
	142	// m = MDIV, p = PDIV, s = SDIV
	143	#define SYS_CLK_FREQ 27
	144	pdiv = 9;
	145	mdiv = (mhz * pdiv) / SYS_CLK_FREQ;
	146	if (mdiv & ~0x3ff)
	147	return -1;
	148	vf004 = (pdiv<<18) \| (mdiv<<8) \| sdiv;
	149
	150	// attempt to keep the AHB divider close to 250, but not higher
	151	for (adiv = 1; mhz / adiv > 250; adiv++)
	152	;
	153
	154	vf000 = memregl[0xf000>>2];
	155	vf000 = (vf000 & ~0x3c0) \| ((adiv - 1) << 6);
	156	memregl[0xf000>>2] = vf000;
	157	memregl[0xf004>>2] = vf004;
	158	memregl[0xf07c>>2] \|= 0x8000;
	159	for (i = 0; (memregl[0xf07c>>2] & 0x8000) && i < 0x100000; i++)
	160	;
	161
	162	printf("clock set to %dMHz, AHB set to %dMHz\n", mhz, mhz / adiv);
	163
	164	// stupid pll share hack - must restart audio
	165	extern long SPUopen(void);
	166	extern long SPUclose(void);
	167	SPUclose();
	168	SPUopen();
	169
170	return 0;
171	}
172
173	int plat_get_bat_capacity(void)
174	{
175	unsigned short magic_val = 0;
176
177	if (battdev < 0)
178	return -1;
179	if (read(battdev, &magic_val, sizeof(magic_val)) != sizeof(magic_val))
180	return -1;
181	switch (magic_val) {
182	default:
183	case 1: return 100;
184	case 2: return 66;
185	case 3: return 40;
186	case 4: return 0;
187	}
188	}
189
190	#define TIMER_BASE3 0x1980
191	#define TIMER_REG(x) memregl[(TIMER_BASE3 + x) >> 2]
192
193	static __attribute__((unused)) unsigned int timer_get(void)
194	{
195	TIMER_REG(0x08) \|= 0x48; /* run timer, latch value */
196	return TIMER_REG(0);
197	}
198
199	static void timer_cleanup(void)
200	{
201	TIMER_REG(0x40) = 0x0c; /* be sure clocks are on */
202	TIMER_REG(0x08) = 0x23; /* stop the timer, clear irq in case it's pending */
203	TIMER_REG(0x00) = 0; /* clear counter */
204	TIMER_REG(0x40) = 0; /* clocks off */
205	TIMER_REG(0x44) = 0; /* dividers back to default */
206	}
207
208	void plat_video_menu_enter(int is_rom_loaded)
209	{
210	if (pl_vout_buf != NULL) {
211	if (psx_bpp == 16)
212	// have to do rgb conversion for menu bg
213	bgr555_to_rgb565(pl_vout_buf, pl_vout_buf, 3202402);
214	else
215	memset(pl_vout_buf, 0, 3202402);
216	}
217
218	pollux_changemode(16, 0);
219	}
220
221	void plat_video_menu_begin(void)
222	{
223	}
224
225	void plat_video_menu_end(void)
226	{
227	g_menuscreen_ptr = fb_flip();
228	}
229
230	void plat_video_menu_leave(void)
231	{
55b0eeea	232	if (psx_vram == NULL) {
	233	fprintf(stderr, "GPU plugin did not provide vram\n");
	234	exit(1);
	235	}
	236
	237	in_set_config_int(in_name_to_id("evdev:pollux-analog"),
	238	IN_CFG_ABS_DEAD_ZONE, analog_deadzone);
41f55c9f	239
	240	memset(g_menuscreen_ptr, 0, 320240 psx_bpp/8);
	241	g_menuscreen_ptr = fb_flip();
	242	memset(g_menuscreen_ptr, 0, 320240 psx_bpp/8);
	243
	244	pollux_changemode(psx_bpp, 1);
55b0eeea	245	}
	246
	247	static void pl_vout_set_raw_vram(void *vram)
	248	{
	249	int i;
	250
	251	psx_vram = vram;
	252
	253	if (vram == NULL)
	254	return;
	255
	256	if ((long)psx_vram & 0x7ff)
	257	fprintf(stderr, "GPU plugin did not align vram\n");
	258
	259	for (i = 0; i < 512; i++) {
	260	psx_vram[i * 1024] = 0; // touch
	261	psx_vram_padds[i] = warm_virt2phys(&psx_vram[i * 1024]);
	262	}
	263	}
	264
55b0eeea	265	static void spend_cycles(int loops)
	266	{
	267	asm volatile (
	268	" mov r0,%0 ;\n"
	269	"0: subs r0,r0,#1 ;\n"
	270	" bgt 0b"
	271	:: "r" (loops) : "cc", "r0");
	272	}
	273
	274	#define DMA_BASE6 0x0300
	275	#define DMA_REG(x) memregl[(DMA_BASE6 + x) >> 2]
	276
	277	/* this takes ~1.5ms, while ldm/stm ~1.95ms */
	278	static void raw_flip_dma(int x, int y)
	279	{
41f55c9f	280	unsigned int dst = fb_paddrs[fb_work_buf] +
41f55c9f	281	(fb_offset_y * 320 + fb_offset_x) * psx_bpp / 8;
02ee7e24	282	int spsx_line = y + psx_offset_y;
02ee7e24	283	int spsx_offset = (x + psx_offset_x) & 0x3f8;
55b0eeea	284	int dst_stride = 320 * psx_bpp / 8;
55b0eeea	285	int len = psx_width * psx_bpp / 8;
55b0eeea	286	int i;
	287
	288	warm_cache_op_all(WOP_D_CLEAN);
d3f3bf09	289	pcnt_start(PCNT_BLIT);
55b0eeea	290
	291	dst &= ~7;
	292	len &= ~7;
	293
	294	if (DMA_REG(0x0c) & 0x90000) {
	295	printf("already runnig DMA?\n");
	296	DMA_REG(0x0c) = 0x100000;
	297	}
	298	if ((DMA_REG(0x2c) & 0x0f) < 5) {
	299	printf("DMA queue busy?\n");
	300	DMA_REG(0x24) = 1;
	301	}
	302
	303	for (i = psx_height; i > 0; i--, spsx_line += psx_step, dst += dst_stride) {
	304	while ((DMA_REG(0x2c) & 0x0f) < 4)
	305	spend_cycles(10);
	306
	307	// XXX: it seems we must always set all regs, what is autoincrement there for?
	308	DMA_REG(0x20) = 1; // queue wait cmd
	309	DMA_REG(0x10) = psx_vram_padds[spsx_line & 511] + spsx_offset * 2; // DMA src
	310	DMA_REG(0x14) = dst; // DMA dst
	311	DMA_REG(0x18) = len - 1; // len
	312	DMA_REG(0x1c) = 0x80000; // go
	313	}
	314
55b0eeea	315	if (psx_bpp == 16) {
55b0eeea	316	pl_vout_buf = g_menuscreen_ptr;
41f55c9f	317	pl_print_hud(320, fb_offset_y + psx_height, fb_offset_x);
55b0eeea	318	}
	319
	320	g_menuscreen_ptr = fb_flip();
	321	pl_flip_cnt++;
d3f3bf09	322
d3f3bf09	323	pcnt_end(PCNT_BLIT);
55b0eeea	324	}
55b0eeea	325
02ee7e24	326	#define make_flip_func(name, blitfunc) \
	327	static void name(int x, int y) \
	328	{ \
	329	unsigned short *vram = psx_vram; \
	330	unsigned char dst = (unsigned char )g_menuscreen_ptr + \
	331	(fb_offset_y * 320 + fb_offset_x) * psx_bpp / 8; \
	332	unsigned int src = (y + psx_offset_y) * 1024 + x + psx_offset_x; \
	333	int dst_stride = 320 * psx_bpp / 8; \
	334	int len = psx_width * psx_bpp / 8; \
	335	int i; \
	336	\
	337	pcnt_start(PCNT_BLIT); \
	338	\
	339	for (i = psx_height; i > 0; i--, src += psx_step * 1024, dst += dst_stride) { \
	340	src &= 1024*512-1; \
	341	blitfunc(dst, vram + src, len); \
	342	} \
	343	\
	344	if (psx_bpp == 16) { \
	345	pl_vout_buf = g_menuscreen_ptr; \
	346	pl_print_hud(320, fb_offset_y + psx_height, fb_offset_x); \
	347	} \
	348	\
	349	g_menuscreen_ptr = fb_flip(); \
	350	pl_flip_cnt++; \
	351	\
	352	pcnt_end(PCNT_BLIT); \
	353	}
	354
	355	make_flip_func(raw_flip_soft, memcpy)
	356	make_flip_func(raw_flip_soft_368, blit320_368)
	357	make_flip_func(raw_flip_soft_512, blit320_512)
	358	make_flip_func(raw_flip_soft_640, blit320_640)
	359
	360	static void *pl_vout_set_mode(int w, int h, int bpp)
55b0eeea	361	{
02ee7e24	362	static int old_w, old_h, old_bpp;
02ee7e24	363	int poff_w, poff_h, w_max;
55b0eeea	364
02ee7e24	365	if (!w \|\| !h \|\| !bpp \|\| (w == old_w && h == old_h && bpp == old_bpp))
02ee7e24	366	return NULL;
55b0eeea	367
02ee7e24	368	printf("psx mode: %dx%d@%d\n", w, h, bpp);
55b0eeea	369
02ee7e24	370	switch (w + (bpp != 16)) {
	371	case 640:
	372	pl_rearmed_cbs.pl_vout_raw_flip = raw_flip_soft_640;
	373	w_max = 640;
	374	break;
	375	case 512:
	376	pl_rearmed_cbs.pl_vout_raw_flip = raw_flip_soft_512;
	377	w_max = 512;
	378	break;
	379	case 384:
	380	case 368:
	381	pl_rearmed_cbs.pl_vout_raw_flip = raw_flip_soft_368;
	382	w_max = 368;
	383	break;
	384	default:
	385	pl_rearmed_cbs.pl_vout_raw_flip = have_warm ? raw_flip_dma : raw_flip_soft;
	386	w_max = 320;
	387	break;
55b0eeea	388	}
55b0eeea	389
02ee7e24	390	psx_step = 1;
	391	if (h > 256) {
	392	psx_step = 2;
	393	h /= 2;
	394	}
	395
	396	poff_w = poff_h = 0;
	397	if (w > w_max) {
	398	poff_w = w / 2 - w_max / 2;
	399	w = w_max;
	400	}
	401	fb_offset_x = 0;
	402	if (w < 320)
	403	fb_offset_x = 320/2 - w / 2;
	404	if (h > 240) {
	405	poff_h = h / 2 - 240/2;
	406	h = 240;
	407	}
	408	fb_offset_y = 240/2 - h / 2;
	409
	410	psx_offset_x = poff_w;
	411	psx_offset_y = poff_h;
	412	psx_width = w;
	413	psx_height = h;
	414	psx_bpp = bpp;
	415
	416	if (fb_offset_x \|\| fb_offset_y) {
	417	// not fullscreen, must clear borders
	418	memset(g_menuscreen_ptr, 0, 320240 psx_bpp/8);
	419	g_menuscreen_ptr = fb_flip();
	420	memset(g_menuscreen_ptr, 0, 320240 psx_bpp/8);
	421	}
	422
	423	pollux_changemode(bpp, 1);
	424
	425	return NULL;
55b0eeea	426	}
55b0eeea	427
41f55c9f	428	static void *pl_vout_flip(void)
	429	{
	430	return NULL;
	431	}
	432
0b6c6da8	433	static void save_multiple_regs(unsigned int *dest, int base, int count)
	434	{
	435	const volatile unsigned int *regs = memregl + base / 4;
	436	int i;
	437
	438	for (i = 0; i < count; i++)
	439	dest[i] = regs[i];
	440	}
	441
	442	static void restore_multiple_regs(int base, const unsigned int *src, int count)
	443	{
	444	volatile unsigned int *regs = memregl + base / 4;
	445	int i;
	446
	447	for (i = 0; i < count; i++)
	448	regs[i] = src[i];
	449	}
	450
55b0eeea	451	void plat_init(void)
	452	{
	453	const char *main_fb_name = "/dev/fb0";
	454	struct fb_fix_screeninfo fbfix;
	455	int rate, timer_div, timer_div2;
	456	int fbdev, ret, warm_ret;
	457
	458	memdev = open("/dev/mem", O_RDWR);
	459	if (memdev == -1) {
	460	perror("open(/dev/mem) failed");
	461	exit(1);
	462	}
	463
	464	memregs = mmap(0, 0x20000, PROT_READ\|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000);
	465	if (memregs == MAP_FAILED) {
	466	perror("mmap(memregs) failed");
	467	exit(1);
	468	}
	469	memregl = (volatile void *)memregs;
	470
0b6c6da8	471	// save video regs of both MLCs
	472	save_multiple_regs(saved_video_regs[0], 0x4058, ARRAY_SIZE(saved_video_regs[0]));
	473	save_multiple_regs(saved_video_regs[1], 0x4458, ARRAY_SIZE(saved_video_regs[1]));
	474
55b0eeea	475	fbdev = open(main_fb_name, O_RDWR);
	476	if (fbdev == -1) {
	477	fprintf(stderr, "%s: ", main_fb_name);
	478	perror("open");
	479	exit(1);
	480	}
	481
	482	ret = ioctl(fbdev, FBIOGET_FSCREENINFO, &fbfix);
	483	if (ret == -1) {
	484	perror("ioctl(fbdev) failed");
	485	exit(1);
	486	}
	487	printf("framebuffer: \"%s\" @ %08lx\n", fbfix.id, fbfix.smem_start);
	488	fb_paddrs[0] = fbfix.smem_start;
	489	fb_paddrs[1] = fb_paddrs[0] + 3202404; // leave space for 24bpp
	490
0b6c6da8	491	fb_vaddrs[0] = mmap(0, FB_VRAM_SIZE, PROT_READ\|PROT_WRITE,
55b0eeea	492	MAP_SHARED, memdev, fb_paddrs[0]);
	493	if (fb_vaddrs[0] == MAP_FAILED) {
	494	perror("mmap(fb_vaddrs) failed");
	495	exit(1);
	496	}
	497	fb_vaddrs[1] = (char )fb_vaddrs[0] + 320240*4;
	498
	499	pollux_changemode(16, 0);
	500	g_menuscreen_w = 320;
	501	g_menuscreen_h = 240;
	502	g_menuscreen_ptr = fb_flip();
	503
	504	g_menubg_ptr = calloc(3202402, 1);
	505	if (g_menubg_ptr == NULL) {
	506	fprintf(stderr, "OOM\n");
	507	exit(1);
	508	}
	509
	510	warm_ret = warm_init();
02ee7e24	511	have_warm = warm_ret == 0;
55b0eeea	512	warm_change_cb_upper(WCB_B_BIT, 1);
	513
	514	/* some firmwares have sys clk on PLL0, we can't adjust CPU clock
	515	* by reprogramming the PLL0 then, as it overclocks system bus */
	516	if ((memregl[0xf000>>2] & 0x03000030) == 0x01000000)
	517	cpu_clock_allowed = 1;
	518	else {
	519	cpu_clock_allowed = 0;
	520	fprintf(stderr, "unexpected PLL config (%08x), overclocking disabled\n",
	521	memregl[0xf000>>2]);
	522	}
	523
	524	/* find what PLL1 runs at, for the timer */
	525	rate = decode_pll(memregl[0xf008>>2]);
	526	printf("PLL1 @ %dHz\n", rate);
	527
	528	/* setup timer */
	529	timer_div = (rate + 500000) / 1000000;
	530	timer_div2 = 0;
	531	while (timer_div > 256) {
	532	timer_div /= 2;
	533	timer_div2++;
	534	}
	535	if (1 <= timer_div && timer_div <= 256 && timer_div2 < 4) {
	536	int timer_rate = (rate >> timer_div2) / timer_div;
	537	if (TIMER_REG(0x08) & 8) {
	538	fprintf(stderr, "warning: timer in use, overriding!\n");
	539	timer_cleanup();
	540	}
	541	if (timer_rate != 1000000)
	542	fprintf(stderr, "warning: timer drift %d us\n", timer_rate - 1000000);
	543
	544	timer_div2 = (timer_div2 + 3) & 3;
	545	TIMER_REG(0x44) = ((timer_div - 1) << 4) \| 2; /* using PLL1 */
	546	TIMER_REG(0x40) = 0x0c; /* clocks on */
	547	TIMER_REG(0x08) = 0x68 \| timer_div2; /* run timer, clear irq, latch value */
	548	}
	549	else
	550	fprintf(stderr, "warning: could not make use of timer\n");
	551
	552	/* setup DMA */
	553	DMA_REG(0x0c) = 0x20000; // pending IRQ clear
	554
	555	battdev = open("/dev/pollux_batt", O_RDONLY);
	556	if (battdev < 0)
	557	perror("Warning: could't open pollux_batt");
	558
41f55c9f	559	pl_rearmed_cbs.pl_vout_flip = pl_vout_flip;
02ee7e24	560	pl_rearmed_cbs.pl_vout_raw_flip = have_warm ? raw_flip_dma : raw_flip_soft;
55b0eeea	561	pl_rearmed_cbs.pl_vout_set_mode = pl_vout_set_mode;
	562	pl_rearmed_cbs.pl_vout_set_raw_vram = pl_vout_set_raw_vram;
	563
	564	psx_width = 320;
	565	psx_height = 240;
	566	psx_bpp = 16;
faf2b2aa	567
faf2b2aa	568	in_tsbutton_init();
55b0eeea	569	}
	570
	571	void plat_finish(void)
	572	{
	573	warm_finish();
	574	timer_cleanup();
0b6c6da8	575
	576	memset(fb_vaddrs[0], 0, FB_VRAM_SIZE);
	577	restore_multiple_regs(0x4058, saved_video_regs[0], ARRAY_SIZE(saved_video_regs[0]));
	578	restore_multiple_regs(0x4458, saved_video_regs[1], ARRAY_SIZE(saved_video_regs[1]));
	579	memregl[0x4058>>2] \|= 0x10;
	580	memregl[0x4458>>2] \|= 0x10;
	581	munmap(fb_vaddrs[0], FB_VRAM_SIZE);
	582	close(fbdev);
55b0eeea	583
	584	if (battdev >= 0)
	585	close(battdev);
55b0eeea	586	munmap((void *)memregs, 0x20000);
	587	close(memdev);
	588	}
	589
	590	void in_update_analogs(void)
	591	{
	592	}
	593
	594	/* Caanoo stuff, perhaps move later */
	595	#include <linux/input.h>
	596
	597	struct in_default_bind in_evdev_defbinds[] = {
	598	{ KEY_UP, IN_BINDTYPE_PLAYER12, DKEY_UP },
	599	{ KEY_DOWN, IN_BINDTYPE_PLAYER12, DKEY_DOWN },
	600	{ KEY_LEFT, IN_BINDTYPE_PLAYER12, DKEY_LEFT },
	601	{ KEY_RIGHT, IN_BINDTYPE_PLAYER12, DKEY_RIGHT },
	602	{ BTN_TOP, IN_BINDTYPE_PLAYER12, DKEY_TRIANGLE },
	603	{ BTN_THUMB, IN_BINDTYPE_PLAYER12, DKEY_CROSS },
	604	{ BTN_THUMB2, IN_BINDTYPE_PLAYER12, DKEY_CIRCLE },
	605	{ BTN_TRIGGER, IN_BINDTYPE_PLAYER12, DKEY_SQUARE },
	606	{ BTN_BASE3, IN_BINDTYPE_PLAYER12, DKEY_START },
	607	{ BTN_BASE4, IN_BINDTYPE_PLAYER12, DKEY_SELECT },
	608	{ BTN_TOP2, IN_BINDTYPE_PLAYER12, DKEY_L1 },
	609	{ BTN_PINKIE, IN_BINDTYPE_PLAYER12, DKEY_R1 },
	610	{ BTN_BASE, IN_BINDTYPE_EMU, SACTION_ENTER_MENU },
	611	{ 0, 0, 0 },
	612	};
	613
	614	static const char * const caanoo_keys[KEY_MAX + 1] = {
	615	[0 ... KEY_MAX] = NULL,
	616	[KEY_UP] = "Up",
	617	[KEY_LEFT] = "Left",
	618	[KEY_RIGHT] = "Right",
	619	[KEY_DOWN] = "Down",
	620	[BTN_TRIGGER] = "A",
	621	[BTN_THUMB] = "X",
	622	[BTN_THUMB2] = "B",
	623	[BTN_TOP] = "Y",
	624	[BTN_TOP2] = "L",
	625	[BTN_PINKIE] = "R",
	626	[BTN_BASE] = "Home",
	627	[BTN_BASE2] = "Lock",
	628	[BTN_BASE3] = "I",
	629	[BTN_BASE4] = "II",
	630	[BTN_BASE5] = "Push",
	631	};
	632
	633	int plat_rescan_inputs(void)
	634	{
	635	in_probe();
	636	in_set_config(in_name_to_id("evdev:pollux-analog"), IN_CFG_KEY_NAMES,
	637	caanoo_keys, sizeof(caanoo_keys));
	638	return 0;
	639	}