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Diffstat (limited to 'hw/display/ati.c')
-rw-r--r--hw/display/ati.c112
1 files changed, 94 insertions, 18 deletions
diff --git a/hw/display/ati.c b/hw/display/ati.c
index 35f49a591b..8f940eee22 100644
--- a/hw/display/ati.c
+++ b/hw/display/ati.c
@@ -50,6 +50,7 @@ static void ati_vga_switch_mode(ATIVGAState *s)
s->mode = EXT_MODE;
if (s->regs.crtc_gen_cntl & CRTC2_EN) {
/* CRT controller enabled, use CRTC values */
+ /* FIXME Should these be the same as VGA CRTC regs? */
uint32_t offs = s->regs.crtc_offset & 0x07ffffff;
int stride = (s->regs.crtc_pitch & 0x7ff) * 8;
int bpp = 0;
@@ -89,7 +90,9 @@ static void ati_vga_switch_mode(ATIVGAState *s)
DPRINTF("Switching to %dx%d %d %d @ %x\n", h, v, stride, bpp, offs);
vbe_ioport_write_index(&s->vga, 0, VBE_DISPI_INDEX_ENABLE);
vbe_ioport_write_data(&s->vga, 0, VBE_DISPI_DISABLED);
- s->vga.big_endian_fb = false;
+ s->vga.big_endian_fb = (s->regs.config_cntl & APER_0_ENDIAN ||
+ s->regs.config_cntl & APER_1_ENDIAN ?
+ true : false);
/* reset VBE regs then set up mode */
s->vga.vbe_regs[VBE_DISPI_INDEX_XRES] = h;
s->vga.vbe_regs[VBE_DISPI_INDEX_YRES] = v;
@@ -101,16 +104,23 @@ static void ati_vga_switch_mode(ATIVGAState *s)
(s->regs.dac_cntl & DAC_8BIT_EN ? VBE_DISPI_8BIT_DAC : 0));
/* now set offset and stride after enable as that resets these */
if (stride) {
+ int bypp = DIV_ROUND_UP(bpp, BITS_PER_BYTE);
+
vbe_ioport_write_index(&s->vga, 0, VBE_DISPI_INDEX_VIRT_WIDTH);
vbe_ioport_write_data(&s->vga, 0, stride);
- if (offs % stride == 0) {
- vbe_ioport_write_index(&s->vga, 0, VBE_DISPI_INDEX_Y_OFFSET);
- vbe_ioport_write_data(&s->vga, 0, offs / stride);
- } else {
- /* FIXME what to do with this? */
- error_report("VGA offset is not multiple of pitch, "
- "expect bad picture");
+ stride *= bypp;
+ if (offs % stride) {
+ DPRINTF("CRTC offset is not multiple of pitch\n");
+ vbe_ioport_write_index(&s->vga, 0,
+ VBE_DISPI_INDEX_X_OFFSET);
+ vbe_ioport_write_data(&s->vga, 0, offs % stride / bypp);
}
+ vbe_ioport_write_index(&s->vga, 0, VBE_DISPI_INDEX_Y_OFFSET);
+ vbe_ioport_write_data(&s->vga, 0, offs / stride);
+ DPRINTF("VBE offset (%d,%d), vbe_start_addr=%x\n",
+ s->vga.vbe_regs[VBE_DISPI_INDEX_X_OFFSET],
+ s->vga.vbe_regs[VBE_DISPI_INDEX_Y_OFFSET],
+ s->vga.vbe_start_addr);
}
}
} else {
@@ -132,9 +142,8 @@ static void ati_cursor_define(ATIVGAState *s)
return; /* Do not update cursor if locked or rendered by guest */
}
/* FIXME handle cur_hv_offs correctly */
- src = s->vga.vram_ptr + (s->regs.crtc_offset & 0x07ffffff) +
- s->regs.cur_offset - (s->regs.cur_hv_offs >> 16) -
- (s->regs.cur_hv_offs & 0xffff) * 16;
+ src = s->vga.vram_ptr + s->regs.cur_offset -
+ (s->regs.cur_hv_offs >> 16) - (s->regs.cur_hv_offs & 0xffff) * 16;
for (i = 0; i < 64; i++) {
for (j = 0; j < 8; j++, idx++) {
data[idx] = src[i * 16 + j];
@@ -190,8 +199,7 @@ static void ati_cursor_draw_line(VGACommonState *vga, uint8_t *d, int scr_y)
return;
}
/* FIXME handle cur_hv_offs correctly */
- src = s->vga.vram_ptr + (s->regs.crtc_offset & 0x07ffffff) +
- s->cursor_offset + (scr_y - vga->hw_cursor_y) * 16;
+ src = s->vga.vram_ptr + s->cursor_offset + (scr_y - vga->hw_cursor_y) * 16;
dp = &dp[vga->hw_cursor_x];
h = ((s->regs.crtc_h_total_disp >> 16) + 1) * 8;
for (i = 0; i < 8; i++) {
@@ -207,7 +215,7 @@ static void ati_cursor_draw_line(VGACommonState *vga, uint8_t *d, int scr_y)
}
} else {
color = (xbits & BIT(7) ? s->regs.cur_color1 :
- s->regs.cur_color0) << 8 | 0xff;
+ s->regs.cur_color0) | 0xff000000;
}
if (vga->hw_cursor_x + i * 8 + j >= h) {
return; /* end of screen, don't span to next line */
@@ -235,6 +243,21 @@ static uint64_t ati_i2c(bitbang_i2c_interface *i2c, uint64_t data, int base)
return data;
}
+static void ati_vga_update_irq(ATIVGAState *s)
+{
+ pci_set_irq(&s->dev, !!(s->regs.gen_int_status & s->regs.gen_int_cntl));
+}
+
+static void ati_vga_vblank_irq(void *opaque)
+{
+ ATIVGAState *s = opaque;
+
+ timer_mod(&s->vblank_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
+ NANOSECONDS_PER_SECOND / 60);
+ s->regs.gen_int_status |= CRTC_VBLANK_INT;
+ ati_vga_update_irq(s);
+}
+
static inline uint64_t ati_reg_read_offs(uint32_t reg, int offs,
unsigned int size)
{
@@ -275,6 +298,12 @@ static uint64_t ati_mm_read(void *opaque, hwaddr addr, unsigned int size)
addr - (BIOS_0_SCRATCH + i * 4), size);
break;
}
+ case GEN_INT_CNTL:
+ val = s->regs.gen_int_cntl;
+ break;
+ case GEN_INT_STATUS:
+ val = s->regs.gen_int_status;
+ break;
case CRTC_GEN_CNTL ... CRTC_GEN_CNTL + 3:
val = ati_reg_read_offs(s->regs.crtc_gen_cntl,
addr - CRTC_GEN_CNTL, size);
@@ -304,9 +333,27 @@ static uint64_t ati_mm_read(void *opaque, hwaddr addr, unsigned int size)
case PALETTE_DATA:
val = vga_ioport_read(&s->vga, VGA_PEL_D);
break;
+ case CNFG_CNTL:
+ val = s->regs.config_cntl;
+ break;
case CNFG_MEMSIZE:
val = s->vga.vram_size;
break;
+ case CONFIG_APER_0_BASE:
+ case CONFIG_APER_1_BASE:
+ val = pci_default_read_config(&s->dev,
+ PCI_BASE_ADDRESS_0, size) & 0xfffffff0;
+ break;
+ case CONFIG_APER_SIZE:
+ val = s->vga.vram_size;
+ break;
+ case CONFIG_REG_1_BASE:
+ val = pci_default_read_config(&s->dev,
+ PCI_BASE_ADDRESS_2, size) & 0xfffffff0;
+ break;
+ case CONFIG_REG_APER_SIZE:
+ val = memory_region_size(&s->mm);
+ break;
case MC_STATUS:
val = 5;
break;
@@ -486,6 +533,21 @@ static void ati_mm_write(void *opaque, hwaddr addr,
addr - (BIOS_0_SCRATCH + i * 4), data, size);
break;
}
+ case GEN_INT_CNTL:
+ s->regs.gen_int_cntl = data;
+ if (data & CRTC_VBLANK_INT) {
+ ati_vga_vblank_irq(s);
+ } else {
+ timer_del(&s->vblank_timer);
+ ati_vga_update_irq(s);
+ }
+ break;
+ case GEN_INT_STATUS:
+ data &= (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF ?
+ 0x000f040fUL : 0xfc080effUL);
+ s->regs.gen_int_status &= ~data;
+ ati_vga_update_irq(s);
+ break;
case CRTC_GEN_CNTL ... CRTC_GEN_CNTL + 3:
{
uint32_t val = s->regs.crtc_gen_cntl;
@@ -549,12 +611,15 @@ static void ati_mm_write(void *opaque, hwaddr addr,
addr - GPIO_MONID, data, size);
/*
* Rage128p accesses DDC used to get EDID via these bits.
- * Only touch i2c when write overlaps 3rd byte because some
- * drivers access this reg via multiple partial writes and
- * without this spurious bits would be sent.
+ * Because some drivers access this via multiple byte writes
+ * we have to be careful when we send bits to avoid spurious
+ * changes in bitbang_i2c state. So only do it when mask is set
+ * and either the enable bits are changed or output bits changed
+ * while enabled.
*/
if ((s->regs.gpio_monid & BIT(25)) &&
- addr <= GPIO_MONID + 2 && addr + size > GPIO_MONID + 2) {
+ ((addr <= GPIO_MONID + 2 && addr + size > GPIO_MONID + 2) ||
+ (addr == GPIO_MONID && (s->regs.gpio_monid & 0x60000)))) {
s->regs.gpio_monid = ati_i2c(&s->bbi2c, s->regs.gpio_monid, 1);
}
}
@@ -580,6 +645,9 @@ static void ati_mm_write(void *opaque, hwaddr addr,
data >>= 8;
vga_ioport_write(&s->vga, VGA_PEL_D, data & 0xff);
break;
+ case CNFG_CNTL:
+ s->regs.config_cntl = data;
+ break;
case CRTC_H_TOTAL_DISP:
s->regs.crtc_h_total_disp = data & 0x07ff07ff;
break;
@@ -870,12 +938,19 @@ static void ati_vga_realize(PCIDevice *dev, Error **errp)
pci_register_bar(dev, 0, PCI_BASE_ADDRESS_MEM_PREFETCH, &vga->vram);
pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_IO, &s->io);
pci_register_bar(dev, 2, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->mm);
+
+ /* most interrupts are not yet emulated but MacOS needs at least VBlank */
+ dev->config[PCI_INTERRUPT_PIN] = 1;
+ timer_init_ns(&s->vblank_timer, QEMU_CLOCK_VIRTUAL, ati_vga_vblank_irq, s);
}
static void ati_vga_reset(DeviceState *dev)
{
ATIVGAState *s = ATI_VGA(dev);
+ timer_del(&s->vblank_timer);
+ ati_vga_update_irq(s);
+
/* reset vga */
vga_common_reset(&s->vga);
s->mode = VGA_MODE;
@@ -885,6 +960,7 @@ static void ati_vga_exit(PCIDevice *dev)
{
ATIVGAState *s = ATI_VGA(dev);
+ timer_del(&s->vblank_timer);
graphic_console_close(s->vga.con);
}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2025-02-09 17:10:42 +0100