[qemu.git] / hw / pl110.c

/*
 * Arm PrimeCell PL110 Color LCD Controller
 *
 * Copyright (c) 2005-2006 CodeSourcery.
 * Written by Paul Brook
 *
 * This code is licenced under the GNU LGPL
 */

#include "hw.h"
#include "primecell.h"
#include "console.h"

#define PL110_CR_EN   0x001
#define PL110_CR_BGR  0x100
#define PL110_CR_BEBO 0x200
#define PL110_CR_BEPO 0x400
#define PL110_CR_PWR  0x800

enum pl110_bppmode
{
    BPP_1,
    BPP_2,
    BPP_4,
    BPP_8,
    BPP_16,
    BPP_32
};

typedef struct {
    uint32_t base;
    DisplayState *ds;
    QEMUConsole *console;

    /* The Versatile/PB uses a slightly modified PL110 controller.  */
    int versatile;
    uint32_t timing[4];
    uint32_t cr;
    uint32_t upbase;
    uint32_t lpbase;
    uint32_t int_status;
    uint32_t int_mask;
    int cols;
    int rows;
    enum pl110_bppmode bpp;
    int invalidate;
    uint32_t pallette[256];
    uint32_t raw_pallette[128];
    qemu_irq irq;
} pl110_state;

static const unsigned char pl110_id[] =
{ 0x10, 0x11, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };

/* The Arm documentation (DDI0224C) says the CLDC on the Versatile board
   has a different ID.  However Linux only looks for the normal ID.  */
#if 0
static const unsigned char pl110_versatile_id[] =
{ 0x93, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
#else
#define pl110_versatile_id pl110_id
#endif

static inline uint32_t rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
{
    return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6);
}

static inline uint32_t rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
{
    return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
}

static inline uint32_t rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
{
    return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
}

static inline uint32_t rgb_to_pixel24(unsigned int r, unsigned int g, unsigned b)
{
    return (r << 16) | (g << 8) | b;
}

static inline uint32_t rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
{
    return (r << 16) | (g << 8) | b;
}

typedef void (*drawfn)(uint32_t *, uint8_t *, const uint8_t *, int);

#define BITS 8
#include "pl110_template.h"
#define BITS 15
#include "pl110_template.h"
#define BITS 16
#include "pl110_template.h"
#define BITS 24
#include "pl110_template.h"
#define BITS 32
#include "pl110_template.h"

static int pl110_enabled(pl110_state *s)
{
  return (s->cr & PL110_CR_EN) && (s->cr & PL110_CR_PWR);
}

static void pl110_update_display(void *opaque)
{
    pl110_state *s = (pl110_state *)opaque;
    drawfn* fntable;
    drawfn fn;
    uint32_t *pallette;
    uint32_t addr;
    uint32_t base;
    int dest_width;
    int src_width;
    uint8_t *dest;
    uint8_t *src;
    int first, last = 0;
    int dirty, new_dirty;
    int i;
    int bpp_offset;

    if (!pl110_enabled(s))
        return;

    switch (s->ds->depth) {
    case 0:
        return;
    case 8:
        fntable = pl110_draw_fn_8;
        dest_width = 1;
        break;
    case 15:
        fntable = pl110_draw_fn_15;
        dest_width = 2;
        break;
    case 16:
        fntable = pl110_draw_fn_16;
        dest_width = 2;
        break;
    case 24:
        fntable = pl110_draw_fn_24;
        dest_width = 3;
        break;
    case 32:
        fntable = pl110_draw_fn_32;
        dest_width = 4;
        break;
    default:
        fprintf(stderr, "pl110: Bad color depth\n");
        exit(1);
    }
    if (s->cr & PL110_CR_BGR)
        bpp_offset = 0;
    else
        bpp_offset = 18;

    if (s->cr & PL110_CR_BEBO)
        fn = fntable[s->bpp + 6 + bpp_offset];
    else if (s->cr & PL110_CR_BEPO)
        fn = fntable[s->bpp + 12 + bpp_offset];
    else
        fn = fntable[s->bpp + bpp_offset];

    src_width = s->cols;
    switch (s->bpp) {
    case BPP_1:
        src_width >>= 3;
        break;
    case BPP_2:
        src_width >>= 2;
        break;
    case BPP_4:
        src_width >>= 1;
        break;
    case BPP_8:
        break;
    case BPP_16:
        src_width <<= 1;
        break;
    case BPP_32:
        src_width <<= 2;
        break;
    }
    dest_width *= s->cols;
    pallette = s->pallette;
    base = s->upbase;
    /* HACK: Arm aliases physical memory at 0x80000000.  */
    if (base > 0x80000000)
        base -= 0x80000000;
    src = phys_ram_base + base;
    dest = s->ds->data;
    first = -1;
    addr = base;

    dirty = cpu_physical_memory_get_dirty(addr, VGA_DIRTY_FLAG);
    new_dirty = dirty;
    for (i = 0; i < s->rows; i++) {
        if ((addr & ~TARGET_PAGE_MASK) + src_width >= TARGET_PAGE_SIZE) {
            uint32_t tmp;
            new_dirty = 0;
            for (tmp = 0; tmp < src_width; tmp += TARGET_PAGE_SIZE) {
                new_dirty |= cpu_physical_memory_get_dirty(addr + tmp,
                                                           VGA_DIRTY_FLAG);
            }
        }

        if (dirty || new_dirty || s->invalidate) {
            fn(pallette, dest, src, s->cols);
            if (first == -1)
                first = i;
            last = i;
        }
        dirty = new_dirty;
        addr += src_width;
        dest += dest_width;
        src += src_width;
    }
    if (first < 0)
      return;

    s->invalidate = 0;
    cpu_physical_memory_reset_dirty(base + first * src_width,
                                    base + (last + 1) * src_width,
                                    VGA_DIRTY_FLAG);
    dpy_update(s->ds, 0, first, s->cols, last - first + 1);
}

static void pl110_invalidate_display(void * opaque)
{
    pl110_state *s = (pl110_state *)opaque;
    s->invalidate = 1;
}

static void pl110_update_pallette(pl110_state *s, int n)
{
    int i;
    uint32_t raw;
    unsigned int r, g, b;

    raw = s->raw_pallette[n];
    n <<= 1;
    for (i = 0; i < 2; i++) {
        r = (raw & 0x1f) << 3;
        raw >>= 5;
        g = (raw & 0x1f) << 3;
        raw >>= 5;
        b = (raw & 0x1f) << 3;
        /* The I bit is ignored.  */
        raw >>= 6;
        switch (s->ds->depth) {
        case 8:
            s->pallette[n] = rgb_to_pixel8(r, g, b);
            break;
        case 15:
            s->pallette[n] = rgb_to_pixel15(r, g, b);
            break;
        case 16:
            s->pallette[n] = rgb_to_pixel16(r, g, b);
            break;
        case 24:
        case 32:
            s->pallette[n] = rgb_to_pixel32(r, g, b);
            break;
        }
        n++;
    }
}

static void pl110_resize(pl110_state *s, int width, int height)
{
    if (width != s->cols || height != s->rows) {
        if (pl110_enabled(s)) {
            qemu_console_resize(s->console, width, height);
        }
    }
    s->cols = width;
    s->rows = height;
}

/* Update interrupts.  */
static void pl110_update(pl110_state *s)
{
  /* TODO: Implement interrupts.  */
}

static uint32_t pl110_read(void *opaque, target_phys_addr_t offset)
{
    pl110_state *s = (pl110_state *)opaque;

    offset -= s->base;
    if (offset >= 0xfe0 && offset < 0x1000) {
        if (s->versatile)
            return pl110_versatile_id[(offset - 0xfe0) >> 2];
        else
            return pl110_id[(offset - 0xfe0) >> 2];
    }
    if (offset >= 0x200 && offset < 0x400) {
        return s->raw_pallette[(offset - 0x200) >> 2];
    }
    switch (offset >> 2) {
    case 0: /* LCDTiming0 */
        return s->timing[0];
    case 1: /* LCDTiming1 */
        return s->timing[1];
    case 2: /* LCDTiming2 */
        return s->timing[2];
    case 3: /* LCDTiming3 */
        return s->timing[3];
    case 4: /* LCDUPBASE */
        return s->upbase;
    case 5: /* LCDLPBASE */
        return s->lpbase;
    case 6: /* LCDIMSC */
	if (s->versatile)
	  return s->cr;
        return s->int_mask;
    case 7: /* LCDControl */
	if (s->versatile)
	  return s->int_mask;
        return s->cr;
    case 8: /* LCDRIS */
        return s->int_status;
    case 9: /* LCDMIS */
        return s->int_status & s->int_mask;
    case 11: /* LCDUPCURR */
        /* TODO: Implement vertical refresh.  */
        return s->upbase;
    case 12: /* LCDLPCURR */
        return s->lpbase;
    default:
        cpu_abort (cpu_single_env, "pl110_read: Bad offset %x\n", (int)offset);
        return 0;
    }
}

static void pl110_write(void *opaque, target_phys_addr_t offset,
                        uint32_t val)
{
    pl110_state *s = (pl110_state *)opaque;
    int n;

    /* For simplicity invalidate the display whenever a control register
       is writen to.  */
    s->invalidate = 1;
    offset -= s->base;
    if (offset >= 0x200 && offset < 0x400) {
        /* Pallette.  */
        n = (offset - 0x200) >> 2;
        s->raw_pallette[(offset - 0x200) >> 2] = val;
        pl110_update_pallette(s, n);
        return;
    }
    switch (offset >> 2) {
    case 0: /* LCDTiming0 */
        s->timing[0] = val;
        n = ((val & 0xfc) + 4) * 4;
        pl110_resize(s, n, s->rows);
        break;
    case 1: /* LCDTiming1 */
        s->timing[1] = val;
        n = (val & 0x3ff) + 1;
        pl110_resize(s, s->cols, n);
        break;
    case 2: /* LCDTiming2 */
        s->timing[2] = val;
        break;
    case 3: /* LCDTiming3 */
        s->timing[3] = val;
        break;
    case 4: /* LCDUPBASE */
        s->upbase = val;
        break;
    case 5: /* LCDLPBASE */
        s->lpbase = val;
        break;
    case 6: /* LCDIMSC */
        if (s->versatile)
            goto control;
    imsc:
        s->int_mask = val;
        pl110_update(s);
        break;
    case 7: /* LCDControl */
        if (s->versatile)
            goto imsc;
    control:
        s->cr = val;
        s->bpp = (val >> 1) & 7;
        if (pl110_enabled(s)) {
            qemu_console_resize(s->console, s->cols, s->rows);
        }
        break;
    case 10: /* LCDICR */
        s->int_status &= ~val;
        pl110_update(s);
        break;
    default:
        cpu_abort (cpu_single_env, "pl110_write: Bad offset %x\n", (int)offset);
    }
}

static CPUReadMemoryFunc *pl110_readfn[] = {
   pl110_read,
   pl110_read,
   pl110_read
};

static CPUWriteMemoryFunc *pl110_writefn[] = {
   pl110_write,
   pl110_write,
   pl110_write
};

void *pl110_init(DisplayState *ds, uint32_t base, qemu_irq irq,
                 int versatile)
{
    pl110_state *s;
    int iomemtype;

    s = (pl110_state *)qemu_mallocz(sizeof(pl110_state));
    iomemtype = cpu_register_io_memory(0, pl110_readfn,
                                       pl110_writefn, s);
    cpu_register_physical_memory(base, 0x00001000, iomemtype);
    s->base = base;
    s->ds = ds;
    s->versatile = versatile;
    s->irq = irq;
    s->console = graphic_console_init(ds, pl110_update_display,
                                      pl110_invalidate_display,
                                      NULL, NULL, s);
    /* ??? Save/restore.  */
    return s;
}
Commit	Line	Data
5fafdf24	1	/*
bdd5003a PB	2	* Arm PrimeCell PL110 Color LCD Controller
bdd5003a PB	3	*
cdbdb648	4	* Copyright (c) 2005-2006 CodeSourcery.
bdd5003a PB	5	* Written by Paul Brook
	6	*
	7	* This code is licenced under the GNU LGPL
	8	*/
	9
87ecb68b PB	10	#include "hw.h"
	11	#include "primecell.h"
	12	#include "console.h"
bdd5003a PB	13
bdd5003a PB	14	#define PL110_CR_EN 0x001
e9c05b42	15	#define PL110_CR_BGR 0x100
bdd5003a PB	16	#define PL110_CR_BEBO 0x200
	17	#define PL110_CR_BEPO 0x400
	18	#define PL110_CR_PWR 0x800
	19
	20	enum pl110_bppmode
	21	{
	22	BPP_1,
	23	BPP_2,
	24	BPP_4,
	25	BPP_8,
	26	BPP_16,
	27	BPP_32
	28	};
	29
	30	typedef struct {
	31	uint32_t base;
	32	DisplayState *ds;
c60e08d9 PB	33	QEMUConsole *console;
c60e08d9 PB	34
cdbdb648 PB	35	/* The Versatile/PB uses a slightly modified PL110 controller. */
cdbdb648 PB	36	int versatile;
bdd5003a PB	37	uint32_t timing[4];
	38	uint32_t cr;
	39	uint32_t upbase;
	40	uint32_t lpbase;
	41	uint32_t int_status;
	42	uint32_t int_mask;
	43	int cols;
	44	int rows;
	45	enum pl110_bppmode bpp;
	46	int invalidate;
	47	uint32_t pallette[256];
	48	uint32_t raw_pallette[128];
d537cf6c	49	qemu_irq irq;
bdd5003a PB	50	} pl110_state;
	51
	52	static const unsigned char pl110_id[] =
	53	{ 0x10, 0x11, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
	54
cdbdb648 PB	55	/* The Arm documentation (DDI0224C) says the CLDC on the Versatile board
	56	has a different ID. However Linux only looks for the normal ID. */
	57	#if 0
	58	static const unsigned char pl110_versatile_id[] =
	59	{ 0x93, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
	60	#else
	61	#define pl110_versatile_id pl110_id
	62	#endif
	63
bdd5003a PB	64	static inline uint32_t rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b)
	65	{
	66	return ((r >> 5) << 5) \| ((g >> 5) << 2) \| (b >> 6);
	67	}
	68
	69	static inline uint32_t rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b)
	70	{
	71	return ((r >> 3) << 10) \| ((g >> 3) << 5) \| (b >> 3);
	72	}
	73
	74	static inline uint32_t rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b)
	75	{
	76	return ((r >> 3) << 11) \| ((g >> 2) << 5) \| (b >> 3);
	77	}
	78
	79	static inline uint32_t rgb_to_pixel24(unsigned int r, unsigned int g, unsigned b)
	80	{
	81	return (r << 16) \| (g << 8) \| b;
	82	}
	83
	84	static inline uint32_t rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b)
	85	{
	86	return (r << 16) \| (g << 8) \| b;
	87	}
	88
	89	typedef void (drawfn)(uint32_t , uint8_t , const uint8_t , int);
	90
	91	#define BITS 8
	92	#include "pl110_template.h"
	93	#define BITS 15
	94	#include "pl110_template.h"
	95	#define BITS 16
	96	#include "pl110_template.h"
	97	#define BITS 24
	98	#include "pl110_template.h"
	99	#define BITS 32
	100	#include "pl110_template.h"
	101
	102	static int pl110_enabled(pl110_state *s)
	103	{
	104	return (s->cr & PL110_CR_EN) && (s->cr & PL110_CR_PWR);
	105	}
	106
95219897	107	static void pl110_update_display(void *opaque)
bdd5003a PB	108	{
	109	pl110_state s = (pl110_state )opaque;
	110	drawfn* fntable;
	111	drawfn fn;
	112	uint32_t *pallette;
	113	uint32_t addr;
	114	uint32_t base;
	115	int dest_width;
	116	int src_width;
	117	uint8_t *dest;
	118	uint8_t *src;
cdbdb648	119	int first, last = 0;
bdd5003a PB	120	int dirty, new_dirty;
bdd5003a PB	121	int i;
e9c05b42	122	int bpp_offset;
bdd5003a PB	123
	124	if (!pl110_enabled(s))
	125	return;
3b46e624	126
bdd5003a	127	switch (s->ds->depth) {
af2f6733 PB	128	case 0:
af2f6733 PB	129	return;
bdd5003a PB	130	case 8:
	131	fntable = pl110_draw_fn_8;
	132	dest_width = 1;
	133	break;
	134	case 15:
	135	fntable = pl110_draw_fn_15;
	136	dest_width = 2;
	137	break;
	138	case 16:
	139	fntable = pl110_draw_fn_16;
	140	dest_width = 2;
	141	break;
	142	case 24:
	143	fntable = pl110_draw_fn_24;
	144	dest_width = 3;
	145	break;
	146	case 32:
	147	fntable = pl110_draw_fn_32;
	148	dest_width = 4;
	149	break;
	150	default:
af2f6733	151	fprintf(stderr, "pl110: Bad color depth\n");
bdd5003a PB	152	exit(1);
bdd5003a PB	153	}
e9c05b42 AZ	154	if (s->cr & PL110_CR_BGR)
	155	bpp_offset = 0;
	156	else
	157	bpp_offset = 18;
	158
bdd5003a	159	if (s->cr & PL110_CR_BEBO)
e9c05b42	160	fn = fntable[s->bpp + 6 + bpp_offset];
bdd5003a	161	else if (s->cr & PL110_CR_BEPO)
e9c05b42	162	fn = fntable[s->bpp + 12 + bpp_offset];
bdd5003a	163	else
e9c05b42	164	fn = fntable[s->bpp + bpp_offset];
3b46e624	165
bdd5003a PB	166	src_width = s->cols;
	167	switch (s->bpp) {
	168	case BPP_1:
	169	src_width >>= 3;
	170	break;
	171	case BPP_2:
	172	src_width >>= 2;
	173	break;
	174	case BPP_4:
	175	src_width >>= 1;
	176	break;
	177	case BPP_8:
	178	break;
	179	case BPP_16:
	180	src_width <<= 1;
	181	break;
	182	case BPP_32:
	183	src_width <<= 2;
	184	break;
	185	}
	186	dest_width *= s->cols;
	187	pallette = s->pallette;
	188	base = s->upbase;
	189	/* HACK: Arm aliases physical memory at 0x80000000. */
	190	if (base > 0x80000000)
	191	base -= 0x80000000;
	192	src = phys_ram_base + base;
	193	dest = s->ds->data;
	194	first = -1;
	195	addr = base;
	196
	197	dirty = cpu_physical_memory_get_dirty(addr, VGA_DIRTY_FLAG);
e6e5906b	198	new_dirty = dirty;
bdd5003a	199	for (i = 0; i < s->rows; i++) {
e6e5906b	200	if ((addr & ~TARGET_PAGE_MASK) + src_width >= TARGET_PAGE_SIZE) {
bdd5003a	201	uint32_t tmp;
e6e5906b	202	new_dirty = 0;
bdd5003a PB	203	for (tmp = 0; tmp < src_width; tmp += TARGET_PAGE_SIZE) {
	204	new_dirty \|= cpu_physical_memory_get_dirty(addr + tmp,
	205	VGA_DIRTY_FLAG);
	206	}
	207	}
	208
	209	if (dirty \|\| new_dirty \|\| s->invalidate) {
	210	fn(pallette, dest, src, s->cols);
	211	if (first == -1)
	212	first = i;
	213	last = i;
	214	}
	215	dirty = new_dirty;
	216	addr += src_width;
	217	dest += dest_width;
	218	src += src_width;
	219	}
	220	if (first < 0)
	221	return;
	222
	223	s->invalidate = 0;
	224	cpu_physical_memory_reset_dirty(base + first * src_width,
	225	base + (last + 1) * src_width,
	226	VGA_DIRTY_FLAG);
	227	dpy_update(s->ds, 0, first, s->cols, last - first + 1);
	228	}
	229
95219897	230	static void pl110_invalidate_display(void * opaque)
bdd5003a PB	231	{
	232	pl110_state s = (pl110_state )opaque;
	233	s->invalidate = 1;
	234	}
	235
	236	static void pl110_update_pallette(pl110_state *s, int n)
	237	{
	238	int i;
	239	uint32_t raw;
	240	unsigned int r, g, b;
	241
	242	raw = s->raw_pallette[n];
	243	n <<= 1;
	244	for (i = 0; i < 2; i++) {
	245	r = (raw & 0x1f) << 3;
	246	raw >>= 5;
	247	g = (raw & 0x1f) << 3;
	248	raw >>= 5;
	249	b = (raw & 0x1f) << 3;
	250	/* The I bit is ignored. */
	251	raw >>= 6;
	252	switch (s->ds->depth) {
	253	case 8:
	254	s->pallette[n] = rgb_to_pixel8(r, g, b);
	255	break;
	256	case 15:
	257	s->pallette[n] = rgb_to_pixel15(r, g, b);
	258	break;
	259	case 16:
	260	s->pallette[n] = rgb_to_pixel16(r, g, b);
	261	break;
	262	case 24:
	263	case 32:
	264	s->pallette[n] = rgb_to_pixel32(r, g, b);
	265	break;
	266	}
	267	n++;
	268	}
	269	}
	270
	271	static void pl110_resize(pl110_state *s, int width, int height)
	272	{
	273	if (width != s->cols \|\| height != s->rows) {
	274	if (pl110_enabled(s)) {
c60e08d9	275	qemu_console_resize(s->console, width, height);
bdd5003a PB	276	}
	277	}
	278	s->cols = width;
	279	s->rows = height;
	280	}
	281
	282	/* Update interrupts. */
	283	static void pl110_update(pl110_state *s)
	284	{
	285	/* TODO: Implement interrupts. */
	286	}
	287
	288	static uint32_t pl110_read(void *opaque, target_phys_addr_t offset)
	289	{
	290	pl110_state s = (pl110_state )opaque;
	291
	292	offset -= s->base;
	293	if (offset >= 0xfe0 && offset < 0x1000) {
cdbdb648 PB	294	if (s->versatile)
	295	return pl110_versatile_id[(offset - 0xfe0) >> 2];
	296	else
	297	return pl110_id[(offset - 0xfe0) >> 2];
bdd5003a PB	298	}
	299	if (offset >= 0x200 && offset < 0x400) {
	300	return s->raw_pallette[(offset - 0x200) >> 2];
	301	}
	302	switch (offset >> 2) {
	303	case 0: /* LCDTiming0 */
	304	return s->timing[0];
	305	case 1: /* LCDTiming1 */
	306	return s->timing[1];
	307	case 2: /* LCDTiming2 */
	308	return s->timing[2];
	309	case 3: /* LCDTiming3 */
	310	return s->timing[3];
	311	case 4: /* LCDUPBASE */
	312	return s->upbase;
	313	case 5: /* LCDLPBASE */
	314	return s->lpbase;
	315	case 6: /* LCDIMSC */
64075cd7 PB	316	if (s->versatile)
64075cd7 PB	317	return s->cr;
bdd5003a PB	318	return s->int_mask;
bdd5003a PB	319	case 7: /* LCDControl */
64075cd7 PB	320	if (s->versatile)
64075cd7 PB	321	return s->int_mask;
bdd5003a PB	322	return s->cr;
	323	case 8: /* LCDRIS */
	324	return s->int_status;
	325	case 9: /* LCDMIS */
	326	return s->int_status & s->int_mask;
	327	case 11: /* LCDUPCURR */
	328	/* TODO: Implement vertical refresh. */
	329	return s->upbase;
	330	case 12: /* LCDLPCURR */
	331	return s->lpbase;
	332	default:
4d1165fa	333	cpu_abort (cpu_single_env, "pl110_read: Bad offset %x\n", (int)offset);
bdd5003a PB	334	return 0;
	335	}
	336	}
	337
	338	static void pl110_write(void *opaque, target_phys_addr_t offset,
	339	uint32_t val)
	340	{
	341	pl110_state s = (pl110_state )opaque;
	342	int n;
	343
	344	/* For simplicity invalidate the display whenever a control register
	345	is writen to. */
	346	s->invalidate = 1;
	347	offset -= s->base;
	348	if (offset >= 0x200 && offset < 0x400) {
	349	/* Pallette. */
	350	n = (offset - 0x200) >> 2;
	351	s->raw_pallette[(offset - 0x200) >> 2] = val;
	352	pl110_update_pallette(s, n);
e10c2bfb	353	return;
bdd5003a PB	354	}
	355	switch (offset >> 2) {
	356	case 0: /* LCDTiming0 */
	357	s->timing[0] = val;
	358	n = ((val & 0xfc) + 4) * 4;
	359	pl110_resize(s, n, s->rows);
	360	break;
	361	case 1: /* LCDTiming1 */
	362	s->timing[1] = val;
	363	n = (val & 0x3ff) + 1;
	364	pl110_resize(s, s->cols, n);
	365	break;
	366	case 2: /* LCDTiming2 */
	367	s->timing[2] = val;
	368	break;
	369	case 3: /* LCDTiming3 */
	370	s->timing[3] = val;
	371	break;
	372	case 4: /* LCDUPBASE */
	373	s->upbase = val;
	374	break;
	375	case 5: /* LCDLPBASE */
	376	s->lpbase = val;
	377	break;
	378	case 6: /* LCDIMSC */
cdbdb648 PB	379	if (s->versatile)
	380	goto control;
	381	imsc:
bdd5003a PB	382	s->int_mask = val;
	383	pl110_update(s);
	384	break;
	385	case 7: /* LCDControl */
cdbdb648 PB	386	if (s->versatile)
	387	goto imsc;
	388	control:
bdd5003a PB	389	s->cr = val;
	390	s->bpp = (val >> 1) & 7;
	391	if (pl110_enabled(s)) {
c60e08d9	392	qemu_console_resize(s->console, s->cols, s->rows);
bdd5003a PB	393	}
	394	break;
	395	case 10: /* LCDICR */
	396	s->int_status &= ~val;
	397	pl110_update(s);
	398	break;
	399	default:
4d1165fa	400	cpu_abort (cpu_single_env, "pl110_write: Bad offset %x\n", (int)offset);
bdd5003a PB	401	}
	402	}
	403
	404	static CPUReadMemoryFunc *pl110_readfn[] = {
	405	pl110_read,
	406	pl110_read,
	407	pl110_read
	408	};
	409
	410	static CPUWriteMemoryFunc *pl110_writefn[] = {
	411	pl110_write,
	412	pl110_write,
	413	pl110_write
	414	};
	415
d537cf6c	416	void pl110_init(DisplayState ds, uint32_t base, qemu_irq irq,
95219897	417	int versatile)
bdd5003a PB	418	{
	419	pl110_state *s;
	420	int iomemtype;
	421
	422	s = (pl110_state *)qemu_mallocz(sizeof(pl110_state));
	423	iomemtype = cpu_register_io_memory(0, pl110_readfn,
	424	pl110_writefn, s);
187337f8	425	cpu_register_physical_memory(base, 0x00001000, iomemtype);
bdd5003a PB	426	s->base = base;
bdd5003a PB	427	s->ds = ds;
cdbdb648	428	s->versatile = versatile;
bdd5003a	429	s->irq = irq;
c60e08d9 PB	430	s->console = graphic_console_init(ds, pl110_update_display,
	431	pl110_invalidate_display,
	432	NULL, NULL, s);
bdd5003a PB	433	/* ??? Save/restore. */
	434	return s;
	435	}