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qemu/hw/omap_lcdc.c

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/*
* OMAP LCD controller.
*
* Copyright (C) 2006-2007 Andrzej Zaborowski <balrog@zabor.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include "hw.h"
#include "console.h"
#include "omap.h"
struct omap_lcd_panel_s {
target_phys_addr_t base;
qemu_irq irq;
DisplayState *state;
ram_addr_t imif_base;
ram_addr_t emiff_base;
int plm;
int tft;
int mono;
int enable;
int width;
int height;
int interrupts;
uint32_t timing[3];
uint32_t subpanel;
uint32_t ctrl;
struct omap_dma_lcd_channel_s *dma;
uint16_t palette[256];
int palette_done;
int frame_done;
int invalidate;
int sync_error;
};
static void omap_lcd_interrupts(struct omap_lcd_panel_s *s)
{
if (s->frame_done && (s->interrupts & 1)) {
qemu_irq_raise(s->irq);
return;
}
if (s->palette_done && (s->interrupts & 2)) {
qemu_irq_raise(s->irq);
return;
}
if (s->sync_error) {
qemu_irq_raise(s->irq);
return;
}
qemu_irq_lower(s->irq);
}
#include "pixel_ops.h"
typedef void draw_line_func(
uint8_t *d, const uint8_t *s, int width, const uint16_t *pal);
#define DEPTH 8
#include "omap_lcd_template.h"
#define DEPTH 15
#include "omap_lcd_template.h"
#define DEPTH 16
#include "omap_lcd_template.h"
#define DEPTH 32
#include "omap_lcd_template.h"
static draw_line_func *draw_line_table2[33] = {
[0 ... 32] = 0,
[8] = draw_line2_8,
[15] = draw_line2_15,
[16] = draw_line2_16,
[32] = draw_line2_32,
}, *draw_line_table4[33] = {
[0 ... 32] = 0,
[8] = draw_line4_8,
[15] = draw_line4_15,
[16] = draw_line4_16,
[32] = draw_line4_32,
}, *draw_line_table8[33] = {
[0 ... 32] = 0,
[8] = draw_line8_8,
[15] = draw_line8_15,
[16] = draw_line8_16,
[32] = draw_line8_32,
}, *draw_line_table12[33] = {
[0 ... 32] = 0,
[8] = draw_line12_8,
[15] = draw_line12_15,
[16] = draw_line12_16,
[32] = draw_line12_32,
}, *draw_line_table16[33] = {
[0 ... 32] = 0,
[8] = draw_line16_8,
[15] = draw_line16_15,
[16] = draw_line16_16,
[32] = draw_line16_32,
};
static void omap_update_display(void *opaque)
{
struct omap_lcd_panel_s *omap_lcd = (struct omap_lcd_panel_s *) opaque;
draw_line_func *draw_line;
int size, dirty[2], minline, maxline, height;
int line, width, linesize, step, bpp, frame_offset;
ram_addr_t frame_base, scanline, newline, x;
uint8_t *s, *d;
if (!omap_lcd || omap_lcd->plm == 1 ||
!omap_lcd->enable || !omap_lcd->state->depth)
return;
frame_offset = 0;
if (omap_lcd->plm != 2) {
memcpy(omap_lcd->palette, phys_ram_base +
omap_lcd->dma->phys_framebuffer[
omap_lcd->dma->current_frame], 0x200);
switch (omap_lcd->palette[0] >> 12 & 7) {
case 3 ... 7:
frame_offset += 0x200;
break;
default:
frame_offset += 0x20;
}
}
/* Colour depth */
switch ((omap_lcd->palette[0] >> 12) & 7) {
case 1:
draw_line = draw_line_table2[omap_lcd->state->depth];
bpp = 2;
break;
case 2:
draw_line = draw_line_table4[omap_lcd->state->depth];
bpp = 4;
break;
case 3:
draw_line = draw_line_table8[omap_lcd->state->depth];
bpp = 8;
break;
case 4 ... 7:
if (!omap_lcd->tft)
draw_line = draw_line_table12[omap_lcd->state->depth];
else
draw_line = draw_line_table16[omap_lcd->state->depth];
bpp = 16;
break;
default:
/* Unsupported at the moment. */
return;
}
/* Resolution */
width = omap_lcd->width;
if (width != omap_lcd->state->width ||
omap_lcd->height != omap_lcd->state->height) {
dpy_resize(omap_lcd->state,
omap_lcd->width, omap_lcd->height);
omap_lcd->invalidate = 1;
}
if (omap_lcd->dma->current_frame == 0)
size = omap_lcd->dma->src_f1_bottom - omap_lcd->dma->src_f1_top;
else
size = omap_lcd->dma->src_f2_bottom - omap_lcd->dma->src_f2_top;
if (frame_offset + ((width * omap_lcd->height * bpp) >> 3) > size + 2) {
omap_lcd->sync_error = 1;
omap_lcd_interrupts(omap_lcd);
omap_lcd->enable = 0;
return;
}
/* Content */
frame_base = omap_lcd->dma->phys_framebuffer[
omap_lcd->dma->current_frame] + frame_offset;
omap_lcd->dma->condition |= 1 << omap_lcd->dma->current_frame;
if (omap_lcd->dma->interrupts & 1)
qemu_irq_raise(omap_lcd->dma->irq);
if (omap_lcd->dma->dual)
omap_lcd->dma->current_frame ^= 1;
if (!omap_lcd->state->depth)
return;
line = 0;
height = omap_lcd->height;
if (omap_lcd->subpanel & (1 << 31)) {
if (omap_lcd->subpanel & (1 << 29))
line = (omap_lcd->subpanel >> 16) & 0x3ff;
else
height = (omap_lcd->subpanel >> 16) & 0x3ff;
/* TODO: fill the rest of the panel with DPD */
}
step = width * bpp >> 3;
scanline = frame_base + step * line;
s = (uint8_t *) (phys_ram_base + scanline);
d = omap_lcd->state->data;
linesize = omap_lcd->state->linesize;
dirty[0] = dirty[1] =
cpu_physical_memory_get_dirty(scanline, VGA_DIRTY_FLAG);
minline = height;
maxline = line;
for (; line < height; line ++) {
newline = scanline + step;
for (x = scanline + TARGET_PAGE_SIZE; x < newline;
x += TARGET_PAGE_SIZE) {
dirty[1] = cpu_physical_memory_get_dirty(x, VGA_DIRTY_FLAG);
dirty[0] |= dirty[1];
}
if (dirty[0] || omap_lcd->invalidate) {
draw_line(d, s, width, omap_lcd->palette);
if (line < minline)
minline = line;
maxline = line + 1;
}
scanline = newline;
dirty[0] = dirty[1];
s += step;
d += linesize;
}
if (maxline >= minline) {
dpy_update(omap_lcd->state, 0, minline, width, maxline);
cpu_physical_memory_reset_dirty(frame_base + step * minline,
frame_base + step * maxline, VGA_DIRTY_FLAG);
}
}
static int ppm_save(const char *filename, uint8_t *data,
int w, int h, int linesize)
{
FILE *f;
uint8_t *d, *d1;
unsigned int v;
int y, x, bpp;
f = fopen(filename, "wb");
if (!f)
return -1;
fprintf(f, "P6\n%d %d\n%d\n", w, h, 255);
d1 = data;
bpp = linesize / w;
for (y = 0; y < h; y ++) {
d = d1;
for (x = 0; x < w; x ++) {
v = *(uint32_t *) d;
switch (bpp) {
case 2:
fputc((v >> 8) & 0xf8, f);
fputc((v >> 3) & 0xfc, f);
fputc((v << 3) & 0xf8, f);
break;
case 3:
case 4:
default:
fputc((v >> 16) & 0xff, f);
fputc((v >> 8) & 0xff, f);
fputc((v) & 0xff, f);
break;
}
d += bpp;
}
d1 += linesize;
}
fclose(f);
return 0;
}
static void omap_screen_dump(void *opaque, const char *filename) {
struct omap_lcd_panel_s *omap_lcd = opaque;
omap_update_display(opaque);
if (omap_lcd && omap_lcd->state->data)
ppm_save(filename, omap_lcd->state->data,
omap_lcd->width, omap_lcd->height,
omap_lcd->state->linesize);
}
static void omap_invalidate_display(void *opaque) {
struct omap_lcd_panel_s *omap_lcd = opaque;
omap_lcd->invalidate = 1;
}
static void omap_lcd_update(struct omap_lcd_panel_s *s) {
if (!s->enable) {
s->dma->current_frame = -1;
s->sync_error = 0;
if (s->plm != 1)
s->frame_done = 1;
omap_lcd_interrupts(s);
return;
}
if (s->dma->current_frame == -1) {
s->frame_done = 0;
s->palette_done = 0;
s->dma->current_frame = 0;
}
if (!s->dma->mpu->port[s->dma->src].addr_valid(s->dma->mpu,
s->dma->src_f1_top) ||
!s->dma->mpu->port[
s->dma->src].addr_valid(s->dma->mpu,
s->dma->src_f1_bottom) ||
(s->dma->dual &&
(!s->dma->mpu->port[
s->dma->src].addr_valid(s->dma->mpu,
s->dma->src_f2_top) ||
!s->dma->mpu->port[
s->dma->src].addr_valid(s->dma->mpu,
s->dma->src_f2_bottom)))) {
s->dma->condition |= 1 << 2;
if (s->dma->interrupts & (1 << 1))
qemu_irq_raise(s->dma->irq);
s->enable = 0;
return;
}
if (s->dma->src == imif) {
/* Framebuffers are in SRAM */
s->dma->phys_framebuffer[0] = s->imif_base +
s->dma->src_f1_top - OMAP_IMIF_BASE;
s->dma->phys_framebuffer[1] = s->imif_base +
s->dma->src_f2_top - OMAP_IMIF_BASE;
} else {
/* Framebuffers are in RAM */
s->dma->phys_framebuffer[0] = s->emiff_base +
s->dma->src_f1_top - OMAP_EMIFF_BASE;
s->dma->phys_framebuffer[1] = s->emiff_base +
s->dma->src_f2_top - OMAP_EMIFF_BASE;
}
if (s->plm != 2 && !s->palette_done) {
memcpy(s->palette, phys_ram_base +
s->dma->phys_framebuffer[s->dma->current_frame], 0x200);
s->palette_done = 1;
omap_lcd_interrupts(s);
}
}
static uint32_t omap_lcdc_read(void *opaque, target_phys_addr_t addr)
{
struct omap_lcd_panel_s *s = (struct omap_lcd_panel_s *) opaque;
int offset = addr - s->base;
switch (offset) {
case 0x00: /* LCD_CONTROL */
return (s->tft << 23) | (s->plm << 20) |
(s->tft << 7) | (s->interrupts << 3) |
(s->mono << 1) | s->enable | s->ctrl | 0xfe000c34;
case 0x04: /* LCD_TIMING0 */
return (s->timing[0] << 10) | (s->width - 1) | 0x0000000f;
case 0x08: /* LCD_TIMING1 */
return (s->timing[1] << 10) | (s->height - 1);
case 0x0c: /* LCD_TIMING2 */
return s->timing[2] | 0xfc000000;
case 0x10: /* LCD_STATUS */
return (s->palette_done << 6) | (s->sync_error << 2) | s->frame_done;
case 0x14: /* LCD_SUBPANEL */
return s->subpanel;
default:
break;
}
OMAP_BAD_REG(addr);
return 0;
}
static void omap_lcdc_write(void *opaque, target_phys_addr_t addr,
uint32_t value)
{
struct omap_lcd_panel_s *s = (struct omap_lcd_panel_s *) opaque;
int offset = addr - s->base;
switch (offset) {
case 0x00: /* LCD_CONTROL */
s->plm = (value >> 20) & 3;
s->tft = (value >> 7) & 1;
s->interrupts = (value >> 3) & 3;
s->mono = (value >> 1) & 1;
s->ctrl = value & 0x01cff300;
if (s->enable != (value & 1)) {
s->enable = value & 1;
omap_lcd_update(s);
}
break;
case 0x04: /* LCD_TIMING0 */
s->timing[0] = value >> 10;
s->width = (value & 0x3ff) + 1;
break;
case 0x08: /* LCD_TIMING1 */
s->timing[1] = value >> 10;
s->height = (value & 0x3ff) + 1;
break;
case 0x0c: /* LCD_TIMING2 */
s->timing[2] = value;
break;
case 0x10: /* LCD_STATUS */
break;
case 0x14: /* LCD_SUBPANEL */
s->subpanel = value & 0xa1ffffff;
break;
default:
OMAP_BAD_REG(addr);
}
}
static CPUReadMemoryFunc *omap_lcdc_readfn[] = {
omap_lcdc_read,
omap_lcdc_read,
omap_lcdc_read,
};
static CPUWriteMemoryFunc *omap_lcdc_writefn[] = {
omap_lcdc_write,
omap_lcdc_write,
omap_lcdc_write,
};
void omap_lcdc_reset(struct omap_lcd_panel_s *s)
{
s->dma->current_frame = -1;
s->plm = 0;
s->tft = 0;
s->mono = 0;
s->enable = 0;
s->width = 0;
s->height = 0;
s->interrupts = 0;
s->timing[0] = 0;
s->timing[1] = 0;
s->timing[2] = 0;
s->subpanel = 0;
s->palette_done = 0;
s->frame_done = 0;
s->sync_error = 0;
s->invalidate = 1;
s->subpanel = 0;
s->ctrl = 0;
}
struct omap_lcd_panel_s *omap_lcdc_init(target_phys_addr_t base, qemu_irq irq,
struct omap_dma_lcd_channel_s *dma, DisplayState *ds,
ram_addr_t imif_base, ram_addr_t emiff_base, omap_clk clk)
{
int iomemtype;
struct omap_lcd_panel_s *s = (struct omap_lcd_panel_s *)
qemu_mallocz(sizeof(struct omap_lcd_panel_s));
s->irq = irq;
s->dma = dma;
s->base = base;
s->state = ds;
s->imif_base = imif_base;
s->emiff_base = emiff_base;
omap_lcdc_reset(s);
iomemtype = cpu_register_io_memory(0, omap_lcdc_readfn,
omap_lcdc_writefn, s);
cpu_register_physical_memory(s->base, 0x100, iomemtype);
graphic_console_init(ds, omap_update_display,
omap_invalidate_display, omap_screen_dump, s);
return s;
}
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