Add the parameter 'order' to qemu_register_reset and sort callbacks on registration. On system reset, callbacks with lower order will be invoked before those with higher order. Update all existing users to the standard order 0. Note: At least for x86, the existing users seem to assume that handlers are called in their registration order. Therefore, the patch preserves this property. If someone feels bored, (s)he could try to identify this dependency and express it properly on callback registration. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
616 lines
18 KiB
C
616 lines
18 KiB
C
/*
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* QEMU G364 framebuffer Emulator.
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*
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* Copyright (c) 2007-2009 Herve Poussineau
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "hw.h"
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#include "mips.h"
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#include "console.h"
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#include "pixel_ops.h"
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//#define DEBUG_G364
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#ifdef DEBUG_G364
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#define DPRINTF(fmt, ...) \
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do { printf("g364: " fmt , ## __VA_ARGS__); } while (0)
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#else
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#define DPRINTF(fmt, ...) do {} while (0)
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#endif
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#define BADF(fmt, ...) \
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do { fprintf(stderr, "g364 ERROR: " fmt , ## __VA_ARGS__);} while (0)
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typedef struct G364State {
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/* hardware */
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uint8_t *vram;
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ram_addr_t vram_offset;
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int vram_size;
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qemu_irq irq;
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/* registers */
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uint8_t color_palette[256][3];
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uint8_t cursor_palette[3][3];
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uint16_t cursor[512];
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uint32_t cursor_position;
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uint32_t ctla;
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uint32_t top_of_screen;
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uint32_t width, height; /* in pixels */
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/* display refresh support */
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DisplayState *ds;
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int depth;
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int blanked;
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} G364State;
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#define REG_ID 0x000000
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#define REG_BOOT 0x080000
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#define REG_DISPLAY 0x080118
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#define REG_VDISPLAY 0x080150
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#define REG_CTLA 0x080300
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#define REG_TOP 0x080400
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#define REG_CURS_PAL 0x080508
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#define REG_CURS_POS 0x080638
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#define REG_CLR_PAL 0x080800
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#define REG_CURS_PAT 0x081000
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#define REG_RESET 0x180000
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#define CTLA_FORCE_BLANK 0x00000400
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#define CTLA_NO_CURSOR 0x00800000
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static inline int check_dirty(ram_addr_t page)
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{
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return cpu_physical_memory_get_dirty(page, VGA_DIRTY_FLAG);
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}
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static inline void reset_dirty(G364State *s,
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ram_addr_t page_min, ram_addr_t page_max)
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{
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cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE - 1,
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VGA_DIRTY_FLAG);
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}
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static void g364fb_draw_graphic8(G364State *s)
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{
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int i, w;
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uint8_t *vram;
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uint8_t *data_display, *dd;
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ram_addr_t page, page_min, page_max;
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int x, y;
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int xmin, xmax;
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int ymin, ymax;
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int xcursor, ycursor;
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unsigned int (*rgb_to_pixel)(unsigned int r, unsigned int g, unsigned int b);
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switch (ds_get_bits_per_pixel(s->ds)) {
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case 8:
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rgb_to_pixel = rgb_to_pixel8;
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w = 1;
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break;
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case 15:
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rgb_to_pixel = rgb_to_pixel15;
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w = 2;
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break;
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case 16:
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rgb_to_pixel = rgb_to_pixel16;
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w = 2;
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break;
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case 32:
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rgb_to_pixel = rgb_to_pixel32;
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w = 4;
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break;
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default:
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BADF("unknown host depth %d\n", ds_get_bits_per_pixel(s->ds));
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return;
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}
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page = s->vram_offset;
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page_min = (ram_addr_t)-1;
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page_max = 0;
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x = y = 0;
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xmin = s->width;
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xmax = 0;
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ymin = s->height;
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ymax = 0;
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if (!(s->ctla & CTLA_NO_CURSOR)) {
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xcursor = s->cursor_position >> 12;
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ycursor = s->cursor_position & 0xfff;
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} else {
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xcursor = ycursor = -65;
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}
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vram = s->vram + s->top_of_screen;
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/* XXX: out of range in vram? */
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data_display = dd = ds_get_data(s->ds);
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while (y < s->height) {
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if (check_dirty(page)) {
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if (y < ymin)
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ymin = ymax = y;
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if (page_min == (ram_addr_t)-1)
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page_min = page;
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page_max = page;
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if (x < xmin)
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xmin = x;
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for (i = 0; i < TARGET_PAGE_SIZE; i++) {
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uint8_t index;
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unsigned int color;
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if (unlikely((y >= ycursor && y < ycursor + 64) &&
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(x >= xcursor && x < xcursor + 64))) {
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/* pointer area */
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int xdiff = x - xcursor;
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uint16_t curs = s->cursor[(y - ycursor) * 8 + xdiff / 8];
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int op = (curs >> ((xdiff & 7) * 2)) & 3;
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if (likely(op == 0)) {
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/* transparent */
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index = *vram;
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color = (*rgb_to_pixel)(
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s->color_palette[index][0],
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s->color_palette[index][1],
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s->color_palette[index][2]);
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} else {
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/* get cursor color */
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index = op - 1;
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color = (*rgb_to_pixel)(
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s->cursor_palette[index][0],
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s->cursor_palette[index][1],
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s->cursor_palette[index][2]);
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}
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} else {
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/* normal area */
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index = *vram;
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color = (*rgb_to_pixel)(
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s->color_palette[index][0],
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s->color_palette[index][1],
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s->color_palette[index][2]);
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}
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memcpy(dd, &color, w);
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dd += w;
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x++;
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vram++;
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if (x == s->width) {
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xmax = s->width - 1;
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y++;
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if (y == s->height) {
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ymax = s->height - 1;
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goto done;
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}
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data_display = dd = data_display + ds_get_linesize(s->ds);
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xmin = 0;
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x = 0;
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}
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}
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if (x > xmax)
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xmax = x;
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if (y > ymax)
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ymax = y;
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} else {
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int dy;
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if (page_min != (ram_addr_t)-1) {
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reset_dirty(s, page_min, page_max);
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page_min = (ram_addr_t)-1;
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page_max = 0;
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dpy_update(s->ds, xmin, ymin, xmax - xmin + 1, ymax - ymin + 1);
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xmin = s->width;
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xmax = 0;
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ymin = s->height;
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ymax = 0;
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}
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x += TARGET_PAGE_SIZE;
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dy = x / s->width;
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x = x % s->width;
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y += dy;
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vram += TARGET_PAGE_SIZE;
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data_display += dy * ds_get_linesize(s->ds);
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dd = data_display + x * w;
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}
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page += TARGET_PAGE_SIZE;
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}
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done:
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if (page_min != (ram_addr_t)-1) {
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dpy_update(s->ds, xmin, ymin, xmax - xmin + 1, ymax - ymin + 1);
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reset_dirty(s, page_min, page_max);
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}
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}
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static void g364fb_draw_blank(G364State *s)
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{
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int i, w;
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uint8_t *d;
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if (s->blanked) {
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/* Screen is already blank. No need to redraw it */
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return;
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}
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w = s->width * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3);
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d = ds_get_data(s->ds);
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for (i = 0; i < s->height; i++) {
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memset(d, 0, w);
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d += ds_get_linesize(s->ds);
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}
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dpy_update(s->ds, 0, 0, s->width, s->height);
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s->blanked = 1;
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}
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static void g364fb_update_display(void *opaque)
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{
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G364State *s = opaque;
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if (s->width == 0 || s->height == 0)
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return;
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if (s->width != ds_get_width(s->ds) || s->height != ds_get_height(s->ds)) {
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qemu_console_resize(s->ds, s->width, s->height);
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}
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if (s->ctla & CTLA_FORCE_BLANK) {
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g364fb_draw_blank(s);
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} else if (s->depth == 8) {
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g364fb_draw_graphic8(s);
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} else {
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BADF("unknown guest depth %d\n", s->depth);
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}
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qemu_irq_raise(s->irq);
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}
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static void inline g364fb_invalidate_display(void *opaque)
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{
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G364State *s = opaque;
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int i;
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s->blanked = 0;
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for (i = 0; i < s->vram_size; i += TARGET_PAGE_SIZE) {
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cpu_physical_memory_set_dirty(s->vram_offset + i);
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}
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}
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static void g364fb_reset(void *opaque)
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{
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G364State *s = opaque;
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qemu_irq_lower(s->irq);
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memset(s->color_palette, 0, sizeof(s->color_palette));
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memset(s->cursor_palette, 0, sizeof(s->cursor_palette));
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memset(s->cursor, 0, sizeof(s->cursor));
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s->cursor_position = 0;
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s->ctla = 0;
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s->top_of_screen = 0;
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s->width = s->height = 0;
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memset(s->vram, 0, s->vram_size);
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g364fb_invalidate_display(opaque);
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}
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static void g364fb_screen_dump(void *opaque, const char *filename)
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{
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G364State *s = opaque;
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int y, x;
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uint8_t index;
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uint8_t *data_buffer;
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FILE *f;
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if (s->depth != 8) {
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BADF("unknown guest depth %d\n", s->depth);
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return;
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}
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f = fopen(filename, "wb");
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if (!f)
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return;
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if (s->ctla & CTLA_FORCE_BLANK) {
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/* blank screen */
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fprintf(f, "P4\n%d %d\n",
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s->width, s->height);
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for (y = 0; y < s->height; y++)
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for (x = 0; x < s->width; x++)
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fputc(0, f);
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} else {
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data_buffer = s->vram + s->top_of_screen;
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fprintf(f, "P6\n%d %d\n%d\n",
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s->width, s->height, 255);
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for (y = 0; y < s->height; y++)
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for (x = 0; x < s->width; x++, data_buffer++) {
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index = *data_buffer;
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fputc(s->color_palette[index][0], f);
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fputc(s->color_palette[index][1], f);
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fputc(s->color_palette[index][2], f);
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}
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}
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fclose(f);
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}
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/* called for accesses to io ports */
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static uint32_t g364fb_ctrl_readl(void *opaque, target_phys_addr_t addr)
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{
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G364State *s = opaque;
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uint32_t val;
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if (addr >= REG_CURS_PAT && addr < REG_CURS_PAT + 0x1000) {
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/* cursor pattern */
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int idx = (addr - REG_CURS_PAT) >> 3;
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val = s->cursor[idx];
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} else if (addr >= REG_CURS_PAL && addr < REG_CURS_PAL + 0x18) {
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/* cursor palette */
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int idx = (addr - REG_CURS_PAL) >> 3;
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val = ((uint32_t)s->cursor_palette[idx][0] << 16);
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val |= ((uint32_t)s->cursor_palette[idx][1] << 8);
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val |= ((uint32_t)s->cursor_palette[idx][2] << 0);
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} else {
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switch (addr) {
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case REG_ID:
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val = 0x10; /* Mips G364 */
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break;
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case REG_DISPLAY:
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val = s->width / 4;
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break;
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case REG_VDISPLAY:
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val = s->height * 2;
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break;
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case REG_CTLA:
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val = s->ctla;
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break;
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default:
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{
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BADF("invalid read at [" TARGET_FMT_plx "]\n", addr);
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val = 0;
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break;
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}
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}
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}
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DPRINTF("read 0x%08x at [" TARGET_FMT_plx "]\n", val, addr);
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return val;
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}
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static uint32_t g364fb_ctrl_readw(void *opaque, target_phys_addr_t addr)
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{
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uint32_t v = g364fb_ctrl_readl(opaque, addr & ~0x3);
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if (addr & 0x2)
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return v >> 16;
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else
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return v & 0xffff;
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}
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static uint32_t g364fb_ctrl_readb(void *opaque, target_phys_addr_t addr)
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{
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uint32_t v = g364fb_ctrl_readl(opaque, addr & ~0x3);
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return (v >> (8 * (addr & 0x3))) & 0xff;
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}
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static void g364fb_update_depth(G364State *s)
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{
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const static int depths[8] = { 1, 2, 4, 8, 15, 16, 0 };
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s->depth = depths[(s->ctla & 0x00700000) >> 20];
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}
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static void g364_invalidate_cursor_position(G364State *s)
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{
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int ymin, ymax, start, end, i;
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/* invalidate only near the cursor */
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ymin = s->cursor_position & 0xfff;
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ymax = MIN(s->height, ymin + 64);
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start = ymin * ds_get_linesize(s->ds);
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end = (ymax + 1) * ds_get_linesize(s->ds);
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for (i = start; i < end; i += TARGET_PAGE_SIZE) {
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cpu_physical_memory_set_dirty(s->vram_offset + i);
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}
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}
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static void g364fb_ctrl_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
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{
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G364State *s = opaque;
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DPRINTF("write 0x%08x at [" TARGET_FMT_plx "]\n", val, addr);
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if (addr >= REG_CLR_PAL && addr < REG_CLR_PAL + 0x800) {
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/* color palette */
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int idx = (addr - REG_CLR_PAL) >> 3;
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s->color_palette[idx][0] = (val >> 16) & 0xff;
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s->color_palette[idx][1] = (val >> 8) & 0xff;
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s->color_palette[idx][2] = val & 0xff;
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g364fb_invalidate_display(s);
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} else if (addr >= REG_CURS_PAT && addr < REG_CURS_PAT + 0x1000) {
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/* cursor pattern */
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int idx = (addr - REG_CURS_PAT) >> 3;
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s->cursor[idx] = val;
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g364fb_invalidate_display(s);
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} else if (addr >= REG_CURS_PAL && addr < REG_CURS_PAL + 0x18) {
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/* cursor palette */
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int idx = (addr - REG_CURS_PAL) >> 3;
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s->cursor_palette[idx][0] = (val >> 16) & 0xff;
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s->cursor_palette[idx][1] = (val >> 8) & 0xff;
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s->cursor_palette[idx][2] = val & 0xff;
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g364fb_invalidate_display(s);
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} else {
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switch (addr) {
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case REG_ID: /* Card identifier; read-only */
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case REG_BOOT: /* Boot timing */
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case 0x80108: /* Line timing: half sync */
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case 0x80110: /* Line timing: back porch */
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case 0x80120: /* Line timing: short display */
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case 0x80128: /* Frame timing: broad pulse */
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case 0x80130: /* Frame timing: v sync */
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case 0x80138: /* Frame timing: v preequalise */
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case 0x80140: /* Frame timing: v postequalise */
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case 0x80148: /* Frame timing: v blank */
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case 0x80158: /* Line timing: line time */
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case 0x80160: /* Frame store: line start */
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case 0x80168: /* vram cycle: mem init */
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case 0x80170: /* vram cycle: transfer delay */
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case 0x80200: /* vram cycle: mask register */
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/* ignore */
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break;
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case REG_TOP:
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s->top_of_screen = val;
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g364fb_invalidate_display(s);
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break;
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case REG_DISPLAY:
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s->width = val * 4;
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break;
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case REG_VDISPLAY:
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s->height = val / 2;
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break;
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case REG_CTLA:
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s->ctla = val;
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g364fb_update_depth(s);
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g364fb_invalidate_display(s);
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break;
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case REG_CURS_POS:
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g364_invalidate_cursor_position(s);
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s->cursor_position = val;
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g364_invalidate_cursor_position(s);
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break;
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case REG_RESET:
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g364fb_reset(s);
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break;
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default:
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BADF("invalid write of 0x%08x at [" TARGET_FMT_plx "]\n", val, addr);
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break;
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|
}
|
|
}
|
|
qemu_irq_lower(s->irq);
|
|
}
|
|
|
|
static void g364fb_ctrl_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
{
|
|
uint32_t old_val = g364fb_ctrl_readl(opaque, addr & ~0x3);
|
|
|
|
if (addr & 0x2)
|
|
val = (val << 16) | (old_val & 0x0000ffff);
|
|
else
|
|
val = val | (old_val & 0xffff0000);
|
|
g364fb_ctrl_writel(opaque, addr & ~0x3, val);
|
|
}
|
|
|
|
static void g364fb_ctrl_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
{
|
|
uint32_t old_val = g364fb_ctrl_readl(opaque, addr & ~0x3);
|
|
|
|
switch (addr & 3) {
|
|
case 0:
|
|
val = val | (old_val & 0xffffff00);
|
|
break;
|
|
case 1:
|
|
val = (val << 8) | (old_val & 0xffff00ff);
|
|
break;
|
|
case 2:
|
|
val = (val << 16) | (old_val & 0xff00ffff);
|
|
break;
|
|
case 3:
|
|
val = (val << 24) | (old_val & 0x00ffffff);
|
|
break;
|
|
}
|
|
g364fb_ctrl_writel(opaque, addr & ~0x3, val);
|
|
}
|
|
|
|
static CPUReadMemoryFunc *g364fb_ctrl_read[3] = {
|
|
g364fb_ctrl_readb,
|
|
g364fb_ctrl_readw,
|
|
g364fb_ctrl_readl,
|
|
};
|
|
|
|
static CPUWriteMemoryFunc *g364fb_ctrl_write[3] = {
|
|
g364fb_ctrl_writeb,
|
|
g364fb_ctrl_writew,
|
|
g364fb_ctrl_writel,
|
|
};
|
|
|
|
static int g364fb_load(QEMUFile *f, void *opaque, int version_id)
|
|
{
|
|
G364State *s = opaque;
|
|
unsigned int i, vram_size;
|
|
|
|
if (version_id != 1)
|
|
return -EINVAL;
|
|
|
|
vram_size = qemu_get_be32(f);
|
|
if (vram_size < s->vram_size)
|
|
return -EINVAL;
|
|
qemu_get_buffer(f, s->vram, s->vram_size);
|
|
for (i = 0; i < 256; i++)
|
|
qemu_get_buffer(f, s->color_palette[i], 3);
|
|
for (i = 0; i < 3; i++)
|
|
qemu_get_buffer(f, s->cursor_palette[i], 3);
|
|
qemu_get_buffer(f, (uint8_t *)s->cursor, sizeof(s->cursor));
|
|
s->cursor_position = qemu_get_be32(f);
|
|
s->ctla = qemu_get_be32(f);
|
|
s->top_of_screen = qemu_get_be32(f);
|
|
s->width = qemu_get_be32(f);
|
|
s->height = qemu_get_be32(f);
|
|
|
|
/* force refresh */
|
|
g364fb_update_depth(s);
|
|
g364fb_invalidate_display(s);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void g364fb_save(QEMUFile *f, void *opaque)
|
|
{
|
|
G364State *s = opaque;
|
|
int i;
|
|
|
|
qemu_put_be32(f, s->vram_size);
|
|
qemu_put_buffer(f, s->vram, s->vram_size);
|
|
for (i = 0; i < 256; i++)
|
|
qemu_put_buffer(f, s->color_palette[i], 3);
|
|
for (i = 0; i < 3; i++)
|
|
qemu_put_buffer(f, s->cursor_palette[i], 3);
|
|
qemu_put_buffer(f, (uint8_t *)s->cursor, sizeof(s->cursor));
|
|
qemu_put_be32(f, s->cursor_position);
|
|
qemu_put_be32(f, s->ctla);
|
|
qemu_put_be32(f, s->top_of_screen);
|
|
qemu_put_be32(f, s->width);
|
|
qemu_put_be32(f, s->height);
|
|
}
|
|
|
|
int g364fb_mm_init(target_phys_addr_t vram_base,
|
|
target_phys_addr_t ctrl_base, int it_shift,
|
|
qemu_irq irq)
|
|
{
|
|
G364State *s;
|
|
int io_ctrl;
|
|
|
|
s = qemu_mallocz(sizeof(G364State));
|
|
|
|
s->vram_size = 8 * 1024 * 1024;
|
|
s->vram_offset = qemu_ram_alloc(s->vram_size);
|
|
s->vram = qemu_get_ram_ptr(s->vram_offset);
|
|
s->irq = irq;
|
|
|
|
qemu_register_reset(g364fb_reset, 0, s);
|
|
register_savevm("g364fb", 0, 1, g364fb_save, g364fb_load, s);
|
|
g364fb_reset(s);
|
|
|
|
s->ds = graphic_console_init(g364fb_update_display,
|
|
g364fb_invalidate_display,
|
|
g364fb_screen_dump, NULL, s);
|
|
|
|
cpu_register_physical_memory(vram_base, s->vram_size, s->vram_offset);
|
|
|
|
io_ctrl = cpu_register_io_memory(0, g364fb_ctrl_read, g364fb_ctrl_write, s);
|
|
cpu_register_physical_memory(ctrl_base, 0x200000, io_ctrl);
|
|
|
|
return 0;
|
|
}
|