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xemu/hw/display/ati.c
Prasad J Pandit a98610c429 ati-vga: check mm_index before recursive call (CVE-2020-13800) 
While accessing VGA registers via ati_mm_read/write routines,
a guest may set 's->regs.mm_index' such that it leads to infinite
recursion. Check mm_index value to avoid such recursion. Log an
error message for wrong values.

Reported-by: Ren Ding <rding@gatech.edu>
Reported-by: Hanqing Zhao <hanqing@gatech.edu>
Reported-by: Yi Ren <c4tren@gmail.com>
Message-id: 20200604090830.33885-1-ppandit@redhat.com
Suggested-by: BALATON Zoltan <balaton@eik.bme.hu>
Suggested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-06-05 09:14:40 +02:00

1018 lines
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/*
* QEMU ATI SVGA emulation
*
* Copyright (c) 2019 BALATON Zoltan
*
* This work is licensed under the GNU GPL license version 2 or later.
*/
/*
* WARNING:
* This is very incomplete and only enough for Linux console and some
* unaccelerated X output at the moment.
* Currently it's little more than a frame buffer with minimal functions,
* other more advanced features of the hardware are yet to be implemented.
* We only aim for Rage 128 Pro (and some RV100) and 2D only at first,
* No 3D at all yet (maybe after 2D works, but feel free to improve it)
*/
#include "qemu/osdep.h"
#include "ati_int.h"
#include "ati_regs.h"
#include "vga-access.h"
#include "hw/qdev-properties.h"
#include "vga_regs.h"
#include "qemu/log.h"
#include "qemu/module.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "ui/console.h"
#include "hw/display/i2c-ddc.h"
#include "trace.h"
#define ATI_DEBUG_HW_CURSOR 0
static const struct {
const char *name;
uint16_t dev_id;
} ati_model_aliases[] = {
{ "rage128p", PCI_DEVICE_ID_ATI_RAGE128_PF },
{ "rv100", PCI_DEVICE_ID_ATI_RADEON_QY },
};
enum { VGA_MODE, EXT_MODE };
static void ati_vga_switch_mode(ATIVGAState *s)
{
DPRINTF("%d -> %d\n",
s->mode, !!(s->regs.crtc_gen_cntl & CRTC2_EXT_DISP_EN));
if (s->regs.crtc_gen_cntl & CRTC2_EXT_DISP_EN) {
/* Extended mode enabled */
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;
int h, v;
if (s->regs.crtc_h_total_disp == 0) {
s->regs.crtc_h_total_disp = ((640 / 8) - 1) << 16;
}
if (s->regs.crtc_v_total_disp == 0) {
s->regs.crtc_v_total_disp = (480 - 1) << 16;
}
h = ((s->regs.crtc_h_total_disp >> 16) + 1) * 8;
v = (s->regs.crtc_v_total_disp >> 16) + 1;
switch (s->regs.crtc_gen_cntl & CRTC_PIX_WIDTH_MASK) {
case CRTC_PIX_WIDTH_4BPP:
bpp = 4;
break;
case CRTC_PIX_WIDTH_8BPP:
bpp = 8;
break;
case CRTC_PIX_WIDTH_15BPP:
bpp = 15;
break;
case CRTC_PIX_WIDTH_16BPP:
bpp = 16;
break;
case CRTC_PIX_WIDTH_24BPP:
bpp = 24;
break;
case CRTC_PIX_WIDTH_32BPP:
bpp = 32;
break;
default:
qemu_log_mask(LOG_UNIMP, "Unsupported bpp value\n");
}
assert(bpp != 0);
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 = (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;
s->vga.vbe_regs[VBE_DISPI_INDEX_BPP] = bpp;
/* enable mode via ioport so it updates vga regs */
vbe_ioport_write_index(&s->vga, 0, VBE_DISPI_INDEX_ENABLE);
vbe_ioport_write_data(&s->vga, 0, VBE_DISPI_ENABLED |
VBE_DISPI_LFB_ENABLED | VBE_DISPI_NOCLEARMEM |
(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);
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 {
/* VGA mode enabled */
s->mode = VGA_MODE;
vbe_ioport_write_index(&s->vga, 0, VBE_DISPI_INDEX_ENABLE);
vbe_ioport_write_data(&s->vga, 0, VBE_DISPI_DISABLED);
}
}
/* Used by host side hardware cursor */
static void ati_cursor_define(ATIVGAState *s)
{
uint8_t data[1024];
uint32_t srcoff;
int i, j, idx = 0;
if ((s->regs.cur_offset & BIT(31)) || s->cursor_guest_mode) {
return; /* Do not update cursor if locked or rendered by guest */
}
/* FIXME handle cur_hv_offs correctly */
srcoff = 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] = vga_read_byte(&s->vga, srcoff + i * 16 + j);
data[512 + idx] = vga_read_byte(&s->vga, srcoff + i * 16 + j + 8);
}
}
if (!s->cursor) {
s->cursor = cursor_alloc(64, 64);
}
cursor_set_mono(s->cursor, s->regs.cur_color1, s->regs.cur_color0,
&data[512], 1, &data[0]);
dpy_cursor_define(s->vga.con, s->cursor);
}
/* Alternatively support guest rendered hardware cursor */
static void ati_cursor_invalidate(VGACommonState *vga)
{
ATIVGAState *s = container_of(vga, ATIVGAState, vga);
int size = (s->regs.crtc_gen_cntl & CRTC2_CUR_EN) ? 64 : 0;
if (s->regs.cur_offset & BIT(31)) {
return; /* Do not update cursor if locked */
}
if (s->cursor_size != size ||
vga->hw_cursor_x != s->regs.cur_hv_pos >> 16 ||
vga->hw_cursor_y != (s->regs.cur_hv_pos & 0xffff) ||
s->cursor_offset != s->regs.cur_offset - (s->regs.cur_hv_offs >> 16) -
(s->regs.cur_hv_offs & 0xffff) * 16) {
/* Remove old cursor then update and show new one if needed */
vga_invalidate_scanlines(vga, vga->hw_cursor_y, vga->hw_cursor_y + 63);
vga->hw_cursor_x = s->regs.cur_hv_pos >> 16;
vga->hw_cursor_y = s->regs.cur_hv_pos & 0xffff;
s->cursor_offset = s->regs.cur_offset - (s->regs.cur_hv_offs >> 16) -
(s->regs.cur_hv_offs & 0xffff) * 16;
s->cursor_size = size;
if (size) {
vga_invalidate_scanlines(vga,
vga->hw_cursor_y, vga->hw_cursor_y + 63);
}
}
}
static void ati_cursor_draw_line(VGACommonState *vga, uint8_t *d, int scr_y)
{
ATIVGAState *s = container_of(vga, ATIVGAState, vga);
uint32_t srcoff;
uint32_t *dp = (uint32_t *)d;
int i, j, h;
if (!(s->regs.crtc_gen_cntl & CRTC2_CUR_EN) ||
scr_y < vga->hw_cursor_y || scr_y >= vga->hw_cursor_y + 64 ||
scr_y > s->regs.crtc_v_total_disp >> 16) {
return;
}
/* FIXME handle cur_hv_offs correctly */
srcoff = 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++) {
uint32_t color;
uint8_t abits = vga_read_byte(vga, srcoff + i);
uint8_t xbits = vga_read_byte(vga, srcoff + i + 8);
for (j = 0; j < 8; j++, abits <<= 1, xbits <<= 1) {
if (abits & BIT(7)) {
if (xbits & BIT(7)) {
color = dp[i * 8 + j] ^ 0xffffffff; /* complement */
} else {
continue; /* transparent, no change */
}
} else {
color = (xbits & BIT(7) ? s->regs.cur_color1 :
s->regs.cur_color0) | 0xff000000;
}
if (vga->hw_cursor_x + i * 8 + j >= h) {
return; /* end of screen, don't span to next line */
}
dp[i * 8 + j] = color;
}
}
}
static uint64_t ati_i2c(bitbang_i2c_interface *i2c, uint64_t data, int base)
{
bool c = (data & BIT(base + 17) ? !!(data & BIT(base + 1)) : 1);
bool d = (data & BIT(base + 16) ? !!(data & BIT(base)) : 1);
bitbang_i2c_set(i2c, BITBANG_I2C_SCL, c);
d = bitbang_i2c_set(i2c, BITBANG_I2C_SDA, d);
data &= ~0xf00ULL;
if (c) {
data |= BIT(base + 9);
}
if (d) {
data |= BIT(base + 8);
}
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)
{
if (offs == 0 && size == 4) {
return reg;
} else {
return extract32(reg, offs * BITS_PER_BYTE, size * BITS_PER_BYTE);
}
}
static uint64_t ati_mm_read(void *opaque, hwaddr addr, unsigned int size)
{
ATIVGAState *s = opaque;
uint64_t val = 0;
switch (addr) {
case MM_INDEX:
val = s->regs.mm_index;
break;
case MM_DATA ... MM_DATA + 3:
/* indexed access to regs or memory */
if (s->regs.mm_index & BIT(31)) {
uint32_t idx = s->regs.mm_index & ~BIT(31);
if (idx <= s->vga.vram_size - size) {
val = ldn_le_p(s->vga.vram_ptr + idx, size);
}
} else if (s->regs.mm_index > MM_DATA + 3) {
val = ati_mm_read(s, s->regs.mm_index + addr - MM_DATA, size);
} else {
qemu_log_mask(LOG_GUEST_ERROR,
"ati_mm_read: mm_index too small: %u\n", s->regs.mm_index);
}
break;
case BIOS_0_SCRATCH ... BUS_CNTL - 1:
{
int i = (addr - BIOS_0_SCRATCH) / 4;
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF && i > 3) {
break;
}
val = ati_reg_read_offs(s->regs.bios_scratch[i],
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);
break;
case CRTC_EXT_CNTL ... CRTC_EXT_CNTL + 3:
val = ati_reg_read_offs(s->regs.crtc_ext_cntl,
addr - CRTC_EXT_CNTL, size);
break;
case DAC_CNTL:
val = s->regs.dac_cntl;
break;
case GPIO_VGA_DDC:
val = s->regs.gpio_vga_ddc;
break;
case GPIO_DVI_DDC:
val = s->regs.gpio_dvi_ddc;
break;
case GPIO_MONID ... GPIO_MONID + 3:
val = ati_reg_read_offs(s->regs.gpio_monid,
addr - GPIO_MONID, size);
break;
case PALETTE_INDEX:
/* FIXME unaligned access */
val = vga_ioport_read(&s->vga, VGA_PEL_IR) << 16;
val |= vga_ioport_read(&s->vga, VGA_PEL_IW) & 0xff;
break;
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;
case RBBM_STATUS:
case GUI_STAT:
val = 64; /* free CMDFIFO entries */
break;
case CRTC_H_TOTAL_DISP:
val = s->regs.crtc_h_total_disp;
break;
case CRTC_H_SYNC_STRT_WID:
val = s->regs.crtc_h_sync_strt_wid;
break;
case CRTC_V_TOTAL_DISP:
val = s->regs.crtc_v_total_disp;
break;
case CRTC_V_SYNC_STRT_WID:
val = s->regs.crtc_v_sync_strt_wid;
break;
case CRTC_OFFSET:
val = s->regs.crtc_offset;
break;
case CRTC_OFFSET_CNTL:
val = s->regs.crtc_offset_cntl;
break;
case CRTC_PITCH:
val = s->regs.crtc_pitch;
break;
case 0xf00 ... 0xfff:
val = pci_default_read_config(&s->dev, addr - 0xf00, size);
break;
case CUR_OFFSET:
val = s->regs.cur_offset;
break;
case CUR_HORZ_VERT_POSN:
val = s->regs.cur_hv_pos;
val |= s->regs.cur_offset & BIT(31);
break;
case CUR_HORZ_VERT_OFF:
val = s->regs.cur_hv_offs;
val |= s->regs.cur_offset & BIT(31);
break;
case CUR_CLR0:
val = s->regs.cur_color0;
break;
case CUR_CLR1:
val = s->regs.cur_color1;
break;
case DST_OFFSET:
val = s->regs.dst_offset;
break;
case DST_PITCH:
val = s->regs.dst_pitch;
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) {
val &= s->regs.dst_tile << 16;
}
break;
case DST_WIDTH:
val = s->regs.dst_width;
break;
case DST_HEIGHT:
val = s->regs.dst_height;
break;
case SRC_X:
val = s->regs.src_x;
break;
case SRC_Y:
val = s->regs.src_y;
break;
case DST_X:
val = s->regs.dst_x;
break;
case DST_Y:
val = s->regs.dst_y;
break;
case DP_GUI_MASTER_CNTL:
val = s->regs.dp_gui_master_cntl;
break;
case SRC_OFFSET:
val = s->regs.src_offset;
break;
case SRC_PITCH:
val = s->regs.src_pitch;
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) {
val &= s->regs.src_tile << 16;
}
break;
case DP_BRUSH_BKGD_CLR:
val = s->regs.dp_brush_bkgd_clr;
break;
case DP_BRUSH_FRGD_CLR:
val = s->regs.dp_brush_frgd_clr;
break;
case DP_SRC_FRGD_CLR:
val = s->regs.dp_src_frgd_clr;
break;
case DP_SRC_BKGD_CLR:
val = s->regs.dp_src_bkgd_clr;
break;
case DP_CNTL:
val = s->regs.dp_cntl;
break;
case DP_DATATYPE:
val = s->regs.dp_datatype;
break;
case DP_MIX:
val = s->regs.dp_mix;
break;
case DP_WRITE_MASK:
val = s->regs.dp_write_mask;
break;
case DEFAULT_OFFSET:
val = s->regs.default_offset;
if (s->dev_id != PCI_DEVICE_ID_ATI_RAGE128_PF) {
val >>= 10;
val |= s->regs.default_pitch << 16;
val |= s->regs.default_tile << 30;
}
break;
case DEFAULT_PITCH:
val = s->regs.default_pitch;
val |= s->regs.default_tile << 16;
break;
case DEFAULT_SC_BOTTOM_RIGHT:
val = s->regs.default_sc_bottom_right;
break;
default:
break;
}
if (addr < CUR_OFFSET || addr > CUR_CLR1 || ATI_DEBUG_HW_CURSOR) {
trace_ati_mm_read(size, addr, ati_reg_name(addr & ~3ULL), val);
}
return val;
}
static inline void ati_reg_write_offs(uint32_t *reg, int offs,
uint64_t data, unsigned int size)
{
if (offs == 0 && size == 4) {
*reg = data;
} else {
*reg = deposit32(*reg, offs * BITS_PER_BYTE, size * BITS_PER_BYTE,
data);
}
}
static void ati_mm_write(void *opaque, hwaddr addr,
uint64_t data, unsigned int size)
{
ATIVGAState *s = opaque;
if (addr < CUR_OFFSET || addr > CUR_CLR1 || ATI_DEBUG_HW_CURSOR) {
trace_ati_mm_write(size, addr, ati_reg_name(addr & ~3ULL), data);
}
switch (addr) {
case MM_INDEX:
s->regs.mm_index = data & ~3;
break;
case MM_DATA ... MM_DATA + 3:
/* indexed access to regs or memory */
if (s->regs.mm_index & BIT(31)) {
uint32_t idx = s->regs.mm_index & ~BIT(31);
if (idx <= s->vga.vram_size - size) {
stn_le_p(s->vga.vram_ptr + idx, size, data);
}
} else if (s->regs.mm_index > MM_DATA + 3) {
ati_mm_write(s, s->regs.mm_index + addr - MM_DATA, data, size);
} else {
qemu_log_mask(LOG_GUEST_ERROR,
"ati_mm_write: mm_index too small: %u\n", s->regs.mm_index);
}
break;
case BIOS_0_SCRATCH ... BUS_CNTL - 1:
{
int i = (addr - BIOS_0_SCRATCH) / 4;
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF && i > 3) {
break;
}
ati_reg_write_offs(&s->regs.bios_scratch[i],
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;
ati_reg_write_offs(&s->regs.crtc_gen_cntl,
addr - CRTC_GEN_CNTL, data, size);
if ((val & CRTC2_CUR_EN) != (s->regs.crtc_gen_cntl & CRTC2_CUR_EN)) {
if (s->cursor_guest_mode) {
s->vga.force_shadow = !!(s->regs.crtc_gen_cntl & CRTC2_CUR_EN);
} else {
if (s->regs.crtc_gen_cntl & CRTC2_CUR_EN) {
ati_cursor_define(s);
}
dpy_mouse_set(s->vga.con, s->regs.cur_hv_pos >> 16,
s->regs.cur_hv_pos & 0xffff,
(s->regs.crtc_gen_cntl & CRTC2_CUR_EN) != 0);
}
}
if ((val & (CRTC2_EXT_DISP_EN | CRTC2_EN)) !=
(s->regs.crtc_gen_cntl & (CRTC2_EXT_DISP_EN | CRTC2_EN))) {
ati_vga_switch_mode(s);
}
break;
}
case CRTC_EXT_CNTL ... CRTC_EXT_CNTL + 3:
{
uint32_t val = s->regs.crtc_ext_cntl;
ati_reg_write_offs(&s->regs.crtc_ext_cntl,
addr - CRTC_EXT_CNTL, data, size);
if (s->regs.crtc_ext_cntl & CRT_CRTC_DISPLAY_DIS) {
DPRINTF("Display disabled\n");
s->vga.ar_index &= ~BIT(5);
} else {
DPRINTF("Display enabled\n");
s->vga.ar_index |= BIT(5);
ati_vga_switch_mode(s);
}
if ((val & CRT_CRTC_DISPLAY_DIS) !=
(s->regs.crtc_ext_cntl & CRT_CRTC_DISPLAY_DIS)) {
ati_vga_switch_mode(s);
}
break;
}
case DAC_CNTL:
s->regs.dac_cntl = data & 0xffffe3ff;
s->vga.dac_8bit = !!(data & DAC_8BIT_EN);
break;
case GPIO_VGA_DDC:
if (s->dev_id != PCI_DEVICE_ID_ATI_RAGE128_PF) {
/* FIXME: Maybe add a property to select VGA or DVI port? */
}
break;
case GPIO_DVI_DDC:
if (s->dev_id != PCI_DEVICE_ID_ATI_RAGE128_PF) {
s->regs.gpio_dvi_ddc = ati_i2c(&s->bbi2c, data, 0);
}
break;
case GPIO_MONID ... GPIO_MONID + 3:
/* FIXME What does Radeon have here? */
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) {
ati_reg_write_offs(&s->regs.gpio_monid,
addr - GPIO_MONID, data, size);
/*
* Rage128p accesses DDC used to get EDID via these bits.
* 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 && (s->regs.gpio_monid & 0x60000)))) {
s->regs.gpio_monid = ati_i2c(&s->bbi2c, s->regs.gpio_monid, 1);
}
}
break;
case PALETTE_INDEX ... PALETTE_INDEX + 3:
if (size == 4) {
vga_ioport_write(&s->vga, VGA_PEL_IR, (data >> 16) & 0xff);
vga_ioport_write(&s->vga, VGA_PEL_IW, data & 0xff);
} else {
if (addr == PALETTE_INDEX) {
vga_ioport_write(&s->vga, VGA_PEL_IW, data & 0xff);
} else {
vga_ioport_write(&s->vga, VGA_PEL_IR, data & 0xff);
}
}
break;
case PALETTE_DATA ... PALETTE_DATA + 3:
data <<= addr - PALETTE_DATA;
data = bswap32(data) >> 8;
vga_ioport_write(&s->vga, VGA_PEL_D, data & 0xff);
data >>= 8;
vga_ioport_write(&s->vga, VGA_PEL_D, data & 0xff);
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;
case CRTC_H_SYNC_STRT_WID:
s->regs.crtc_h_sync_strt_wid = data & 0x17bf1fff;
break;
case CRTC_V_TOTAL_DISP:
s->regs.crtc_v_total_disp = data & 0x0fff0fff;
break;
case CRTC_V_SYNC_STRT_WID:
s->regs.crtc_v_sync_strt_wid = data & 0x9f0fff;
break;
case CRTC_OFFSET:
s->regs.crtc_offset = data & 0xc7ffffff;
break;
case CRTC_OFFSET_CNTL:
s->regs.crtc_offset_cntl = data; /* FIXME */
break;
case CRTC_PITCH:
s->regs.crtc_pitch = data & 0x07ff07ff;
break;
case 0xf00 ... 0xfff:
/* read-only copy of PCI config space so ignore writes */
break;
case CUR_OFFSET:
if (s->regs.cur_offset != (data & 0x87fffff0)) {
s->regs.cur_offset = data & 0x87fffff0;
ati_cursor_define(s);
}
break;
case CUR_HORZ_VERT_POSN:
s->regs.cur_hv_pos = data & 0x3fff0fff;
if (data & BIT(31)) {
s->regs.cur_offset |= data & BIT(31);
} else if (s->regs.cur_offset & BIT(31)) {
s->regs.cur_offset &= ~BIT(31);
ati_cursor_define(s);
}
if (!s->cursor_guest_mode &&
(s->regs.crtc_gen_cntl & CRTC2_CUR_EN) && !(data & BIT(31))) {
dpy_mouse_set(s->vga.con, s->regs.cur_hv_pos >> 16,
s->regs.cur_hv_pos & 0xffff, 1);
}
break;
case CUR_HORZ_VERT_OFF:
s->regs.cur_hv_offs = data & 0x3f003f;
if (data & BIT(31)) {
s->regs.cur_offset |= data & BIT(31);
} else if (s->regs.cur_offset & BIT(31)) {
s->regs.cur_offset &= ~BIT(31);
ati_cursor_define(s);
}
break;
case CUR_CLR0:
if (s->regs.cur_color0 != (data & 0xffffff)) {
s->regs.cur_color0 = data & 0xffffff;
ati_cursor_define(s);
}
break;
case CUR_CLR1:
/*
* Update cursor unconditionally here because some clients set up
* other registers before actually writing cursor data to memory at
* offset so we would miss cursor change unless always updating here
*/
s->regs.cur_color1 = data & 0xffffff;
ati_cursor_define(s);
break;
case DST_OFFSET:
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) {
s->regs.dst_offset = data & 0xfffffff0;
} else {
s->regs.dst_offset = data & 0xfffffc00;
}
break;
case DST_PITCH:
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) {
s->regs.dst_pitch = data & 0x3fff;
s->regs.dst_tile = (data >> 16) & 1;
} else {
s->regs.dst_pitch = data & 0x3ff0;
}
break;
case DST_TILE:
if (s->dev_id == PCI_DEVICE_ID_ATI_RADEON_QY) {
s->regs.dst_tile = data & 3;
}
break;
case DST_WIDTH:
s->regs.dst_width = data & 0x3fff;
ati_2d_blt(s);
break;
case DST_HEIGHT:
s->regs.dst_height = data & 0x3fff;
break;
case SRC_X:
s->regs.src_x = data & 0x3fff;
break;
case SRC_Y:
s->regs.src_y = data & 0x3fff;
break;
case DST_X:
s->regs.dst_x = data & 0x3fff;
break;
case DST_Y:
s->regs.dst_y = data & 0x3fff;
break;
case SRC_PITCH_OFFSET:
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) {
s->regs.src_offset = (data & 0x1fffff) << 5;
s->regs.src_pitch = (data & 0x7fe00000) >> 21;
s->regs.src_tile = data >> 31;
} else {
s->regs.src_offset = (data & 0x3fffff) << 10;
s->regs.src_pitch = (data & 0x3fc00000) >> 16;
s->regs.src_tile = (data >> 30) & 1;
}
break;
case DST_PITCH_OFFSET:
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) {
s->regs.dst_offset = (data & 0x1fffff) << 5;
s->regs.dst_pitch = (data & 0x7fe00000) >> 21;
s->regs.dst_tile = data >> 31;
} else {
s->regs.dst_offset = (data & 0x3fffff) << 10;
s->regs.dst_pitch = (data & 0x3fc00000) >> 16;
s->regs.dst_tile = data >> 30;
}
break;
case SRC_Y_X:
s->regs.src_x = data & 0x3fff;
s->regs.src_y = (data >> 16) & 0x3fff;
break;
case DST_Y_X:
s->regs.dst_x = data & 0x3fff;
s->regs.dst_y = (data >> 16) & 0x3fff;
break;
case DST_HEIGHT_WIDTH:
s->regs.dst_width = data & 0x3fff;
s->regs.dst_height = (data >> 16) & 0x3fff;
ati_2d_blt(s);
break;
case DP_GUI_MASTER_CNTL:
s->regs.dp_gui_master_cntl = data & 0xf800000f;
s->regs.dp_datatype = (data & 0x0f00) >> 8 | (data & 0x30f0) << 4 |
(data & 0x4000) << 16;
s->regs.dp_mix = (data & GMC_ROP3_MASK) | (data & 0x7000000) >> 16;
break;
case DST_WIDTH_X:
s->regs.dst_x = data & 0x3fff;
s->regs.dst_width = (data >> 16) & 0x3fff;
ati_2d_blt(s);
break;
case SRC_X_Y:
s->regs.src_y = data & 0x3fff;
s->regs.src_x = (data >> 16) & 0x3fff;
break;
case DST_X_Y:
s->regs.dst_y = data & 0x3fff;
s->regs.dst_x = (data >> 16) & 0x3fff;
break;
case DST_WIDTH_HEIGHT:
s->regs.dst_height = data & 0x3fff;
s->regs.dst_width = (data >> 16) & 0x3fff;
ati_2d_blt(s);
break;
case DST_HEIGHT_Y:
s->regs.dst_y = data & 0x3fff;
s->regs.dst_height = (data >> 16) & 0x3fff;
break;
case SRC_OFFSET:
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) {
s->regs.src_offset = data & 0xfffffff0;
} else {
s->regs.src_offset = data & 0xfffffc00;
}
break;
case SRC_PITCH:
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) {
s->regs.src_pitch = data & 0x3fff;
s->regs.src_tile = (data >> 16) & 1;
} else {
s->regs.src_pitch = data & 0x3ff0;
}
break;
case DP_BRUSH_BKGD_CLR:
s->regs.dp_brush_bkgd_clr = data;
break;
case DP_BRUSH_FRGD_CLR:
s->regs.dp_brush_frgd_clr = data;
break;
case DP_CNTL:
s->regs.dp_cntl = data;
break;
case DP_DATATYPE:
s->regs.dp_datatype = data & 0xe0070f0f;
break;
case DP_MIX:
s->regs.dp_mix = data & 0x00ff0700;
break;
case DP_WRITE_MASK:
s->regs.dp_write_mask = data;
break;
case DEFAULT_OFFSET:
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) {
s->regs.default_offset = data & 0xfffffff0;
} else {
/* Radeon has DEFAULT_PITCH_OFFSET here like DST_PITCH_OFFSET */
s->regs.default_offset = (data & 0x3fffff) << 10;
s->regs.default_pitch = (data & 0x3fc00000) >> 16;
s->regs.default_tile = data >> 30;
}
break;
case DEFAULT_PITCH:
if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) {
s->regs.default_pitch = data & 0x3fff;
s->regs.default_tile = (data >> 16) & 1;
}
break;
case DEFAULT_SC_BOTTOM_RIGHT:
s->regs.default_sc_bottom_right = data & 0x3fff3fff;
break;
default:
break;
}
}
static const MemoryRegionOps ati_mm_ops = {
.read = ati_mm_read,
.write = ati_mm_write,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static void ati_vga_realize(PCIDevice *dev, Error **errp)
{
ATIVGAState *s = ATI_VGA(dev);
VGACommonState *vga = &s->vga;
if (s->model) {
int i;
for (i = 0; i < ARRAY_SIZE(ati_model_aliases); i++) {
if (!strcmp(s->model, ati_model_aliases[i].name)) {
s->dev_id = ati_model_aliases[i].dev_id;
break;
}
}
if (i >= ARRAY_SIZE(ati_model_aliases)) {
warn_report("Unknown ATI VGA model name, "
"using default rage128p");
}
}
if (s->dev_id != PCI_DEVICE_ID_ATI_RAGE128_PF &&
s->dev_id != PCI_DEVICE_ID_ATI_RADEON_QY) {
error_setg(errp, "Unknown ATI VGA device id, "
"only 0x5046 and 0x5159 are supported");
return;
}
pci_set_word(dev->config + PCI_DEVICE_ID, s->dev_id);
if (s->dev_id == PCI_DEVICE_ID_ATI_RADEON_QY &&
s->vga.vram_size_mb < 16) {
warn_report("Too small video memory for device id");
s->vga.vram_size_mb = 16;
}
/* init vga bits */
vga_common_init(vga, OBJECT(s));
vga_init(vga, OBJECT(s), pci_address_space(dev),
pci_address_space_io(dev), true);
vga->con = graphic_console_init(DEVICE(s), 0, s->vga.hw_ops, &s->vga);
if (s->cursor_guest_mode) {
vga->cursor_invalidate = ati_cursor_invalidate;
vga->cursor_draw_line = ati_cursor_draw_line;
}
/* ddc, edid */
I2CBus *i2cbus = i2c_init_bus(DEVICE(s), "ati-vga.ddc");
bitbang_i2c_init(&s->bbi2c, i2cbus);
I2CSlave *i2cddc = I2C_SLAVE(qdev_create(BUS(i2cbus), TYPE_I2CDDC));
i2c_set_slave_address(i2cddc, 0x50);
/* mmio register space */
memory_region_init_io(&s->mm, OBJECT(s), &ati_mm_ops, s,
"ati.mmregs", 0x4000);
/* io space is alias to beginning of mmregs */
memory_region_init_alias(&s->io, OBJECT(s), "ati.io", &s->mm, 0, 0x100);
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;
}
static void ati_vga_exit(PCIDevice *dev)
{
ATIVGAState *s = ATI_VGA(dev);
timer_del(&s->vblank_timer);
graphic_console_close(s->vga.con);
}
static Property ati_vga_properties[] = {
DEFINE_PROP_UINT32("vgamem_mb", ATIVGAState, vga.vram_size_mb, 16),
DEFINE_PROP_STRING("model", ATIVGAState, model),
DEFINE_PROP_UINT16("x-device-id", ATIVGAState, dev_id,
PCI_DEVICE_ID_ATI_RAGE128_PF),
DEFINE_PROP_BOOL("guest_hwcursor", ATIVGAState, cursor_guest_mode, false),
DEFINE_PROP_END_OF_LIST()
};
static void ati_vga_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
dc->reset = ati_vga_reset;
device_class_set_props(dc, ati_vga_properties);
dc->hotpluggable = false;
set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
k->class_id = PCI_CLASS_DISPLAY_VGA;
k->vendor_id = PCI_VENDOR_ID_ATI;
k->device_id = PCI_DEVICE_ID_ATI_RAGE128_PF;
k->romfile = "vgabios-ati.bin";
k->realize = ati_vga_realize;
k->exit = ati_vga_exit;
}
static const TypeInfo ati_vga_info = {
.name = TYPE_ATI_VGA,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(ATIVGAState),
.class_init = ati_vga_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static void ati_vga_register_types(void)
{
type_register_static(&ati_vga_info);
}
type_init(ati_vga_register_types)
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