b9fc4f6e62
Avoid orphan memory regions being added in the /unattached QOM container. This commit was produced with the Coccinelle script scripts/coccinelle/memory-region-housekeeping.cocci. Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
478 lines
12 KiB
C
478 lines
12 KiB
C
/*
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* QEMU Motorola 680x0 Macintosh Video Card Emulation
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* Copyright (c) 2012-2018 Laurent Vivier
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*
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* some parts from QEMU G364 framebuffer Emulator.
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* Copyright (c) 2007-2011 Herve Poussineau
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "qemu/units.h"
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#include "hw/sysbus.h"
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#include "ui/console.h"
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#include "ui/pixel_ops.h"
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#include "hw/nubus/nubus.h"
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#include "hw/display/macfb.h"
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#include "qapi/error.h"
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#include "hw/qdev-properties.h"
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#include "migration/vmstate.h"
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#define VIDEO_BASE 0x00001000
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#define DAFB_BASE 0x00800000
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#define MACFB_PAGE_SIZE 4096
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#define MACFB_VRAM_SIZE (4 * MiB)
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#define DAFB_RESET 0x200
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#define DAFB_LUT 0x213
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typedef void macfb_draw_line_func(MacfbState *s, uint8_t *d, uint32_t addr,
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int width);
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static inline uint8_t macfb_read_byte(MacfbState *s, uint32_t addr)
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{
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return s->vram[addr & s->vram_bit_mask];
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}
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/* 1-bit color */
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static void macfb_draw_line1(MacfbState *s, uint8_t *d, uint32_t addr,
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int width)
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{
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uint8_t r, g, b;
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int x;
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for (x = 0; x < width; x++) {
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int bit = x & 7;
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int idx = (macfb_read_byte(s, addr) >> (7 - bit)) & 1;
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r = g = b = ((1 - idx) << 7);
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addr += (bit == 7);
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*(uint32_t *)d = rgb_to_pixel32(r, g, b);
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d += 4;
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}
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}
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/* 2-bit color */
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static void macfb_draw_line2(MacfbState *s, uint8_t *d, uint32_t addr,
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int width)
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{
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uint8_t r, g, b;
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int x;
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for (x = 0; x < width; x++) {
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int bit = (x & 3);
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int idx = (macfb_read_byte(s, addr) >> ((3 - bit) << 1)) & 3;
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r = s->color_palette[idx * 3];
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g = s->color_palette[idx * 3 + 1];
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b = s->color_palette[idx * 3 + 2];
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addr += (bit == 3);
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*(uint32_t *)d = rgb_to_pixel32(r, g, b);
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d += 4;
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}
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}
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/* 4-bit color */
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static void macfb_draw_line4(MacfbState *s, uint8_t *d, uint32_t addr,
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int width)
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{
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uint8_t r, g, b;
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int x;
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for (x = 0; x < width; x++) {
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int bit = x & 1;
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int idx = (macfb_read_byte(s, addr) >> ((1 - bit) << 2)) & 15;
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r = s->color_palette[idx * 3];
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g = s->color_palette[idx * 3 + 1];
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b = s->color_palette[idx * 3 + 2];
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addr += (bit == 1);
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*(uint32_t *)d = rgb_to_pixel32(r, g, b);
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d += 4;
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}
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}
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/* 8-bit color */
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static void macfb_draw_line8(MacfbState *s, uint8_t *d, uint32_t addr,
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int width)
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{
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uint8_t r, g, b;
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int x;
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for (x = 0; x < width; x++) {
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r = s->color_palette[macfb_read_byte(s, addr) * 3];
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g = s->color_palette[macfb_read_byte(s, addr) * 3 + 1];
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b = s->color_palette[macfb_read_byte(s, addr) * 3 + 2];
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addr++;
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*(uint32_t *)d = rgb_to_pixel32(r, g, b);
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d += 4;
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}
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}
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/* 16-bit color */
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static void macfb_draw_line16(MacfbState *s, uint8_t *d, uint32_t addr,
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int width)
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{
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uint8_t r, g, b;
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int x;
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for (x = 0; x < width; x++) {
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uint16_t pixel;
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pixel = (macfb_read_byte(s, addr) << 8) | macfb_read_byte(s, addr + 1);
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r = ((pixel >> 10) & 0x1f) << 3;
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g = ((pixel >> 5) & 0x1f) << 3;
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b = (pixel & 0x1f) << 3;
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addr += 2;
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*(uint32_t *)d = rgb_to_pixel32(r, g, b);
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d += 4;
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}
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}
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/* 24-bit color */
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static void macfb_draw_line24(MacfbState *s, uint8_t *d, uint32_t addr,
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int width)
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{
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uint8_t r, g, b;
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int x;
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for (x = 0; x < width; x++) {
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r = macfb_read_byte(s, addr);
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g = macfb_read_byte(s, addr + 1);
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b = macfb_read_byte(s, addr + 2);
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addr += 3;
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*(uint32_t *)d = rgb_to_pixel32(r, g, b);
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d += 4;
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}
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}
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enum {
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MACFB_DRAW_LINE1,
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MACFB_DRAW_LINE2,
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MACFB_DRAW_LINE4,
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MACFB_DRAW_LINE8,
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MACFB_DRAW_LINE16,
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MACFB_DRAW_LINE24,
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MACFB_DRAW_LINE_NB,
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};
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static macfb_draw_line_func * const
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macfb_draw_line_table[MACFB_DRAW_LINE_NB] = {
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macfb_draw_line1,
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macfb_draw_line2,
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macfb_draw_line4,
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macfb_draw_line8,
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macfb_draw_line16,
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macfb_draw_line24,
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};
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static int macfb_check_dirty(MacfbState *s, DirtyBitmapSnapshot *snap,
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ram_addr_t addr, int len)
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{
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return memory_region_snapshot_get_dirty(&s->mem_vram, snap, addr, len);
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}
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static void macfb_draw_graphic(MacfbState *s)
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{
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DisplaySurface *surface = qemu_console_surface(s->con);
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DirtyBitmapSnapshot *snap = NULL;
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ram_addr_t page;
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uint32_t v = 0;
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int y, ymin;
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int macfb_stride = (s->depth * s->width + 7) / 8;
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macfb_draw_line_func *macfb_draw_line;
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switch (s->depth) {
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case 1:
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v = MACFB_DRAW_LINE1;
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break;
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case 2:
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v = MACFB_DRAW_LINE2;
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break;
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case 4:
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v = MACFB_DRAW_LINE4;
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break;
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case 8:
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v = MACFB_DRAW_LINE8;
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break;
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case 16:
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v = MACFB_DRAW_LINE16;
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break;
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case 24:
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v = MACFB_DRAW_LINE24;
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break;
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}
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macfb_draw_line = macfb_draw_line_table[v];
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assert(macfb_draw_line != NULL);
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snap = memory_region_snapshot_and_clear_dirty(&s->mem_vram, 0x0,
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memory_region_size(&s->mem_vram),
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DIRTY_MEMORY_VGA);
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ymin = -1;
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page = 0;
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for (y = 0; y < s->height; y++, page += macfb_stride) {
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if (macfb_check_dirty(s, snap, page, macfb_stride)) {
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uint8_t *data_display;
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data_display = surface_data(surface) + y * surface_stride(surface);
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macfb_draw_line(s, data_display, page, s->width);
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if (ymin < 0) {
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ymin = y;
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}
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} else {
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if (ymin >= 0) {
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dpy_gfx_update(s->con, 0, ymin, s->width, y - ymin);
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ymin = -1;
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}
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}
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}
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if (ymin >= 0) {
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dpy_gfx_update(s->con, 0, ymin, s->width, y - ymin);
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}
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g_free(snap);
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}
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static void macfb_invalidate_display(void *opaque)
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{
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MacfbState *s = opaque;
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memory_region_set_dirty(&s->mem_vram, 0, MACFB_VRAM_SIZE);
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}
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static void macfb_update_display(void *opaque)
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{
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MacfbState *s = opaque;
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DisplaySurface *surface = qemu_console_surface(s->con);
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qemu_flush_coalesced_mmio_buffer();
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if (s->width == 0 || s->height == 0) {
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return;
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}
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if (s->width != surface_width(surface) ||
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s->height != surface_height(surface)) {
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qemu_console_resize(s->con, s->width, s->height);
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}
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macfb_draw_graphic(s);
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}
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static void macfb_reset(MacfbState *s)
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{
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int i;
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s->palette_current = 0;
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for (i = 0; i < 256; i++) {
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s->color_palette[i * 3] = 255 - i;
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s->color_palette[i * 3 + 1] = 255 - i;
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s->color_palette[i * 3 + 2] = 255 - i;
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}
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memset(s->vram, 0, MACFB_VRAM_SIZE);
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macfb_invalidate_display(s);
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}
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static uint64_t macfb_ctrl_read(void *opaque,
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hwaddr addr,
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unsigned int size)
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{
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return 0;
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}
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static void macfb_ctrl_write(void *opaque,
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hwaddr addr,
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uint64_t val,
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unsigned int size)
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{
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MacfbState *s = opaque;
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switch (addr) {
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case DAFB_RESET:
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s->palette_current = 0;
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break;
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case DAFB_LUT:
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s->color_palette[s->palette_current++] = val;
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if (s->palette_current % 3) {
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macfb_invalidate_display(s);
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}
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break;
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}
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}
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static const MemoryRegionOps macfb_ctrl_ops = {
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.read = macfb_ctrl_read,
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.write = macfb_ctrl_write,
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.endianness = DEVICE_BIG_ENDIAN,
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.impl.min_access_size = 1,
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.impl.max_access_size = 4,
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};
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static int macfb_post_load(void *opaque, int version_id)
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{
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macfb_invalidate_display(opaque);
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return 0;
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}
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static const VMStateDescription vmstate_macfb = {
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.name = "macfb",
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.version_id = 1,
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.minimum_version_id = 1,
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.minimum_version_id_old = 1,
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.post_load = macfb_post_load,
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.fields = (VMStateField[]) {
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VMSTATE_UINT8_ARRAY(color_palette, MacfbState, 256 * 3),
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VMSTATE_UINT32(palette_current, MacfbState),
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VMSTATE_END_OF_LIST()
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}
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};
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static const GraphicHwOps macfb_ops = {
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.invalidate = macfb_invalidate_display,
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.gfx_update = macfb_update_display,
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};
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static void macfb_common_realize(DeviceState *dev, MacfbState *s, Error **errp)
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{
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DisplaySurface *surface;
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if (s->depth != 1 && s->depth != 2 && s->depth != 4 && s->depth != 8 &&
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s->depth != 16 && s->depth != 24) {
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error_setg(errp, "unknown guest depth %d", s->depth);
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return;
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}
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s->con = graphic_console_init(dev, 0, &macfb_ops, s);
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surface = qemu_console_surface(s->con);
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if (surface_bits_per_pixel(surface) != 32) {
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error_setg(errp, "unknown host depth %d",
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surface_bits_per_pixel(surface));
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return;
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}
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memory_region_init_io(&s->mem_ctrl, OBJECT(dev), &macfb_ctrl_ops, s,
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"macfb-ctrl", 0x1000);
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memory_region_init_ram_nomigrate(&s->mem_vram, OBJECT(s), "macfb-vram",
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MACFB_VRAM_SIZE, errp);
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s->vram = memory_region_get_ram_ptr(&s->mem_vram);
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s->vram_bit_mask = MACFB_VRAM_SIZE - 1;
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vmstate_register_ram(&s->mem_vram, dev);
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memory_region_set_coalescing(&s->mem_vram);
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}
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static void macfb_sysbus_realize(DeviceState *dev, Error **errp)
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{
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MacfbSysBusState *s = MACFB(dev);
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MacfbState *ms = &s->macfb;
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macfb_common_realize(dev, ms, errp);
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sysbus_init_mmio(SYS_BUS_DEVICE(s), &ms->mem_ctrl);
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sysbus_init_mmio(SYS_BUS_DEVICE(s), &ms->mem_vram);
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}
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const uint8_t macfb_rom[] = {
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255, 0, 0, 0,
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};
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static void macfb_nubus_realize(DeviceState *dev, Error **errp)
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{
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NubusDevice *nd = NUBUS_DEVICE(dev);
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MacfbNubusState *s = NUBUS_MACFB(dev);
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MacfbNubusDeviceClass *ndc = MACFB_NUBUS_GET_CLASS(dev);
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MacfbState *ms = &s->macfb;
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ndc->parent_realize(dev, errp);
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macfb_common_realize(dev, ms, errp);
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memory_region_add_subregion(&nd->slot_mem, DAFB_BASE, &ms->mem_ctrl);
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memory_region_add_subregion(&nd->slot_mem, VIDEO_BASE, &ms->mem_vram);
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nubus_register_rom(nd, macfb_rom, sizeof(macfb_rom), 1, 9, 0xf);
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}
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static void macfb_sysbus_reset(DeviceState *d)
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{
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MacfbSysBusState *s = MACFB(d);
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macfb_reset(&s->macfb);
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}
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static void macfb_nubus_reset(DeviceState *d)
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{
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MacfbNubusState *s = NUBUS_MACFB(d);
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macfb_reset(&s->macfb);
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}
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static Property macfb_sysbus_properties[] = {
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DEFINE_PROP_UINT32("width", MacfbSysBusState, macfb.width, 640),
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DEFINE_PROP_UINT32("height", MacfbSysBusState, macfb.height, 480),
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DEFINE_PROP_UINT8("depth", MacfbSysBusState, macfb.depth, 8),
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DEFINE_PROP_END_OF_LIST(),
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};
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static Property macfb_nubus_properties[] = {
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DEFINE_PROP_UINT32("width", MacfbNubusState, macfb.width, 640),
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DEFINE_PROP_UINT32("height", MacfbNubusState, macfb.height, 480),
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DEFINE_PROP_UINT8("depth", MacfbNubusState, macfb.depth, 8),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void macfb_sysbus_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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dc->realize = macfb_sysbus_realize;
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dc->desc = "SysBus Macintosh framebuffer";
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dc->reset = macfb_sysbus_reset;
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dc->vmsd = &vmstate_macfb;
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device_class_set_props(dc, macfb_sysbus_properties);
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}
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static void macfb_nubus_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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MacfbNubusDeviceClass *ndc = MACFB_NUBUS_DEVICE_CLASS(klass);
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device_class_set_parent_realize(dc, macfb_nubus_realize,
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&ndc->parent_realize);
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dc->desc = "Nubus Macintosh framebuffer";
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dc->reset = macfb_nubus_reset;
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dc->vmsd = &vmstate_macfb;
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device_class_set_props(dc, macfb_nubus_properties);
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}
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static TypeInfo macfb_sysbus_info = {
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.name = TYPE_MACFB,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(MacfbSysBusState),
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.class_init = macfb_sysbus_class_init,
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};
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static TypeInfo macfb_nubus_info = {
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.name = TYPE_NUBUS_MACFB,
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.parent = TYPE_NUBUS_DEVICE,
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.instance_size = sizeof(MacfbNubusState),
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.class_init = macfb_nubus_class_init,
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.class_size = sizeof(MacfbNubusDeviceClass),
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};
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static void macfb_register_types(void)
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{
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type_register_static(&macfb_sysbus_info);
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type_register_static(&macfb_nubus_info);
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}
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type_init(macfb_register_types)
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