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xemu/hw/pl110.c
Anthony Liguori c227f0995e Revert "Get rid of _t suffix" 
In the very least, a change like this requires discussion on the list.

The naming convention is goofy and it causes a massive merge problem.  Something
like this _must_ be presented on the list first so people can provide input
and cope with it.

This reverts commit 99a0949b72.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-01 16:12:16 -05:00

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9.0 KiB
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/*
* Arm PrimeCell PL110 Color LCD Controller
*
* Copyright (c) 2005-2009 CodeSourcery.
* Written by Paul Brook
*
* This code is licenced under the GNU LGPL
*/
#include "sysbus.h"
#include "console.h"
#include "framebuffer.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 {
SysBusDevice busdev;
DisplayState *ds;
/* 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
#include "pixel_ops.h"
#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;
int dest_width;
int src_width;
int bpp_offset;
int first;
int last;
if (!pl110_enabled(s))
return;
switch (ds_get_bits_per_pixel(s->ds)) {
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;
first = 0;
framebuffer_update_display(s->ds,
s->upbase, s->cols, s->rows,
src_width, dest_width, 0,
s->invalidate,
fn, s->pallette,
&first, &last);
if (first >= 0) {
dpy_update(s->ds, 0, first, s->cols, last - first + 1);
}
s->invalidate = 0;
}
static void pl110_invalidate_display(void * opaque)
{
pl110_state *s = (pl110_state *)opaque;
s->invalidate = 1;
if (pl110_enabled(s)) {
qemu_console_resize(s->ds, s->cols, s->rows);
}
}
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 (ds_get_bits_per_pixel(s->ds)) {
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->ds, 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;
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:
hw_error("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;
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->ds, s->cols, s->rows);
}
break;
case 10: /* LCDICR */
s->int_status &= ~val;
pl110_update(s);
break;
default:
hw_error("pl110_write: Bad offset %x\n", (int)offset);
}
}
static CPUReadMemoryFunc * const pl110_readfn[] = {
pl110_read,
pl110_read,
pl110_read
};
static CPUWriteMemoryFunc * const pl110_writefn[] = {
pl110_write,
pl110_write,
pl110_write
};
static int pl110_init(SysBusDevice *dev)
{
pl110_state *s = FROM_SYSBUS(pl110_state, dev);
int iomemtype;
iomemtype = cpu_register_io_memory(pl110_readfn,
pl110_writefn, s);
sysbus_init_mmio(dev, 0x1000, iomemtype);
sysbus_init_irq(dev, &s->irq);
s->ds = graphic_console_init(pl110_update_display,
pl110_invalidate_display,
NULL, NULL, s);
/* ??? Save/restore. */
return 0;
}
static int pl110_versatile_init(SysBusDevice *dev)
{
pl110_state *s = FROM_SYSBUS(pl110_state, dev);
s->versatile = 1;
return pl110_init(dev);
}
static void pl110_register_devices(void)
{
sysbus_register_dev("pl110", sizeof(pl110_state), pl110_init);
sysbus_register_dev("pl110_versatile", sizeof(pl110_state),
pl110_versatile_init);
}
device_init(pl110_register_devices)
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