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qemu-e2k/hw/vmware_vga.c
Roland Dreier f2d928d44e vmware_vga: Check cursor dimensions passed from guest to avoid buffer overflow 
Check that the cursor dimensions passed from the guest for the
DEFINE_CURSOR command don't overflow the available space in the
cursor.image[] or cursor.mask[] arrays before copying data from the
guest into those arrays.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-11 09:56:30 -06:00

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/*
* QEMU VMware-SVGA "chipset".
*
* Copyright (c) 2007 Andrzej Zaborowski <balrog@zabor.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hw.h"
#include "loader.h"
#include "console.h"
#include "pci.h"
#include "vmware_vga.h"
#define VERBOSE
#undef DIRECT_VRAM
#define HW_RECT_ACCEL
#define HW_FILL_ACCEL
#define HW_MOUSE_ACCEL
# include "vga_int.h"
struct vmsvga_state_s {
VGACommonState vga;
int width;
int height;
int invalidated;
int depth;
int bypp;
int enable;
int config;
struct {
int id;
int x;
int y;
int on;
} cursor;
target_phys_addr_t vram_base;
int index;
int scratch_size;
uint32_t *scratch;
int new_width;
int new_height;
uint32_t guest;
uint32_t svgaid;
uint32_t wred;
uint32_t wgreen;
uint32_t wblue;
int syncing;
int fb_size;
ram_addr_t fifo_offset;
uint8_t *fifo_ptr;
unsigned int fifo_size;
target_phys_addr_t fifo_base;
union {
uint32_t *fifo;
struct __attribute__((__packed__)) {
uint32_t min;
uint32_t max;
uint32_t next_cmd;
uint32_t stop;
/* Add registers here when adding capabilities. */
uint32_t fifo[0];
} *cmd;
};
#define REDRAW_FIFO_LEN 512
struct vmsvga_rect_s {
int x, y, w, h;
} redraw_fifo[REDRAW_FIFO_LEN];
int redraw_fifo_first, redraw_fifo_last;
};
struct pci_vmsvga_state_s {
PCIDevice card;
struct vmsvga_state_s chip;
};
#define SVGA_MAGIC 0x900000UL
#define SVGA_MAKE_ID(ver) (SVGA_MAGIC << 8 | (ver))
#define SVGA_ID_0 SVGA_MAKE_ID(0)
#define SVGA_ID_1 SVGA_MAKE_ID(1)
#define SVGA_ID_2 SVGA_MAKE_ID(2)
#define SVGA_LEGACY_BASE_PORT 0x4560
#define SVGA_INDEX_PORT 0x0
#define SVGA_VALUE_PORT 0x1
#define SVGA_BIOS_PORT 0x2
#define SVGA_VERSION_2
#ifdef SVGA_VERSION_2
# define SVGA_ID SVGA_ID_2
# define SVGA_IO_BASE SVGA_LEGACY_BASE_PORT
# define SVGA_IO_MUL 1
# define SVGA_FIFO_SIZE 0x10000
# define SVGA_MEM_BASE 0xe0000000
# define SVGA_PCI_DEVICE_ID PCI_DEVICE_ID_VMWARE_SVGA2
#else
# define SVGA_ID SVGA_ID_1
# define SVGA_IO_BASE SVGA_LEGACY_BASE_PORT
# define SVGA_IO_MUL 4
# define SVGA_FIFO_SIZE 0x10000
# define SVGA_MEM_BASE 0xe0000000
# define SVGA_PCI_DEVICE_ID PCI_DEVICE_ID_VMWARE_SVGA
#endif
enum {
/* ID 0, 1 and 2 registers */
SVGA_REG_ID = 0,
SVGA_REG_ENABLE = 1,
SVGA_REG_WIDTH = 2,
SVGA_REG_HEIGHT = 3,
SVGA_REG_MAX_WIDTH = 4,
SVGA_REG_MAX_HEIGHT = 5,
SVGA_REG_DEPTH = 6,
SVGA_REG_BITS_PER_PIXEL = 7, /* Current bpp in the guest */
SVGA_REG_PSEUDOCOLOR = 8,
SVGA_REG_RED_MASK = 9,
SVGA_REG_GREEN_MASK = 10,
SVGA_REG_BLUE_MASK = 11,
SVGA_REG_BYTES_PER_LINE = 12,
SVGA_REG_FB_START = 13,
SVGA_REG_FB_OFFSET = 14,
SVGA_REG_VRAM_SIZE = 15,
SVGA_REG_FB_SIZE = 16,
/* ID 1 and 2 registers */
SVGA_REG_CAPABILITIES = 17,
SVGA_REG_MEM_START = 18, /* Memory for command FIFO */
SVGA_REG_MEM_SIZE = 19,
SVGA_REG_CONFIG_DONE = 20, /* Set when memory area configured */
SVGA_REG_SYNC = 21, /* Write to force synchronization */
SVGA_REG_BUSY = 22, /* Read to check if sync is done */
SVGA_REG_GUEST_ID = 23, /* Set guest OS identifier */
SVGA_REG_CURSOR_ID = 24, /* ID of cursor */
SVGA_REG_CURSOR_X = 25, /* Set cursor X position */
SVGA_REG_CURSOR_Y = 26, /* Set cursor Y position */
SVGA_REG_CURSOR_ON = 27, /* Turn cursor on/off */
SVGA_REG_HOST_BITS_PER_PIXEL = 28, /* Current bpp in the host */
SVGA_REG_SCRATCH_SIZE = 29, /* Number of scratch registers */
SVGA_REG_MEM_REGS = 30, /* Number of FIFO registers */
SVGA_REG_NUM_DISPLAYS = 31, /* Number of guest displays */
SVGA_REG_PITCHLOCK = 32, /* Fixed pitch for all modes */
SVGA_PALETTE_BASE = 1024, /* Base of SVGA color map */
SVGA_PALETTE_END = SVGA_PALETTE_BASE + 767,
SVGA_SCRATCH_BASE = SVGA_PALETTE_BASE + 768,
};
#define SVGA_CAP_NONE 0
#define SVGA_CAP_RECT_FILL (1 << 0)
#define SVGA_CAP_RECT_COPY (1 << 1)
#define SVGA_CAP_RECT_PAT_FILL (1 << 2)
#define SVGA_CAP_LEGACY_OFFSCREEN (1 << 3)
#define SVGA_CAP_RASTER_OP (1 << 4)
#define SVGA_CAP_CURSOR (1 << 5)
#define SVGA_CAP_CURSOR_BYPASS (1 << 6)
#define SVGA_CAP_CURSOR_BYPASS_2 (1 << 7)
#define SVGA_CAP_8BIT_EMULATION (1 << 8)
#define SVGA_CAP_ALPHA_CURSOR (1 << 9)
#define SVGA_CAP_GLYPH (1 << 10)
#define SVGA_CAP_GLYPH_CLIPPING (1 << 11)
#define SVGA_CAP_OFFSCREEN_1 (1 << 12)
#define SVGA_CAP_ALPHA_BLEND (1 << 13)
#define SVGA_CAP_3D (1 << 14)
#define SVGA_CAP_EXTENDED_FIFO (1 << 15)
#define SVGA_CAP_MULTIMON (1 << 16)
#define SVGA_CAP_PITCHLOCK (1 << 17)
/*
* FIFO offsets (seen as an array of 32-bit words)
*/
enum {
/*
* The original defined FIFO offsets
*/
SVGA_FIFO_MIN = 0,
SVGA_FIFO_MAX, /* The distance from MIN to MAX must be at least 10K */
SVGA_FIFO_NEXT_CMD,
SVGA_FIFO_STOP,
/*
* Additional offsets added as of SVGA_CAP_EXTENDED_FIFO
*/
SVGA_FIFO_CAPABILITIES = 4,
SVGA_FIFO_FLAGS,
SVGA_FIFO_FENCE,
SVGA_FIFO_3D_HWVERSION,
SVGA_FIFO_PITCHLOCK,
};
#define SVGA_FIFO_CAP_NONE 0
#define SVGA_FIFO_CAP_FENCE (1 << 0)
#define SVGA_FIFO_CAP_ACCELFRONT (1 << 1)
#define SVGA_FIFO_CAP_PITCHLOCK (1 << 2)
#define SVGA_FIFO_FLAG_NONE 0
#define SVGA_FIFO_FLAG_ACCELFRONT (1 << 0)
/* These values can probably be changed arbitrarily. */
#define SVGA_SCRATCH_SIZE 0x8000
#define SVGA_MAX_WIDTH 2360
#define SVGA_MAX_HEIGHT 1770
#ifdef VERBOSE
# define GUEST_OS_BASE 0x5001
static const char *vmsvga_guest_id[] = {
[0x00] = "Dos",
[0x01] = "Windows 3.1",
[0x02] = "Windows 95",
[0x03] = "Windows 98",
[0x04] = "Windows ME",
[0x05] = "Windows NT",
[0x06] = "Windows 2000",
[0x07] = "Linux",
[0x08] = "OS/2",
[0x09] = "an unknown OS",
[0x0a] = "BSD",
[0x0b] = "Whistler",
[0x0c] = "an unknown OS",
[0x0d] = "an unknown OS",
[0x0e] = "an unknown OS",
[0x0f] = "an unknown OS",
[0x10] = "an unknown OS",
[0x11] = "an unknown OS",
[0x12] = "an unknown OS",
[0x13] = "an unknown OS",
[0x14] = "an unknown OS",
[0x15] = "Windows 2003",
};
#endif
enum {
SVGA_CMD_INVALID_CMD = 0,
SVGA_CMD_UPDATE = 1,
SVGA_CMD_RECT_FILL = 2,
SVGA_CMD_RECT_COPY = 3,
SVGA_CMD_DEFINE_BITMAP = 4,
SVGA_CMD_DEFINE_BITMAP_SCANLINE = 5,
SVGA_CMD_DEFINE_PIXMAP = 6,
SVGA_CMD_DEFINE_PIXMAP_SCANLINE = 7,
SVGA_CMD_RECT_BITMAP_FILL = 8,
SVGA_CMD_RECT_PIXMAP_FILL = 9,
SVGA_CMD_RECT_BITMAP_COPY = 10,
SVGA_CMD_RECT_PIXMAP_COPY = 11,
SVGA_CMD_FREE_OBJECT = 12,
SVGA_CMD_RECT_ROP_FILL = 13,
SVGA_CMD_RECT_ROP_COPY = 14,
SVGA_CMD_RECT_ROP_BITMAP_FILL = 15,
SVGA_CMD_RECT_ROP_PIXMAP_FILL = 16,
SVGA_CMD_RECT_ROP_BITMAP_COPY = 17,
SVGA_CMD_RECT_ROP_PIXMAP_COPY = 18,
SVGA_CMD_DEFINE_CURSOR = 19,
SVGA_CMD_DISPLAY_CURSOR = 20,
SVGA_CMD_MOVE_CURSOR = 21,
SVGA_CMD_DEFINE_ALPHA_CURSOR = 22,
SVGA_CMD_DRAW_GLYPH = 23,
SVGA_CMD_DRAW_GLYPH_CLIPPED = 24,
SVGA_CMD_UPDATE_VERBOSE = 25,
SVGA_CMD_SURFACE_FILL = 26,
SVGA_CMD_SURFACE_COPY = 27,
SVGA_CMD_SURFACE_ALPHA_BLEND = 28,
SVGA_CMD_FRONT_ROP_FILL = 29,
SVGA_CMD_FENCE = 30,
};
/* Legal values for the SVGA_REG_CURSOR_ON register in cursor bypass mode */
enum {
SVGA_CURSOR_ON_HIDE = 0,
SVGA_CURSOR_ON_SHOW = 1,
SVGA_CURSOR_ON_REMOVE_FROM_FB = 2,
SVGA_CURSOR_ON_RESTORE_TO_FB = 3,
};
static inline void vmsvga_update_rect(struct vmsvga_state_s *s,
int x, int y, int w, int h)
{
#ifndef DIRECT_VRAM
int line;
int bypl;
int width;
int start;
uint8_t *src;
uint8_t *dst;
if (x + w > s->width) {
fprintf(stderr, "%s: update width too large x: %d, w: %d\n",
__FUNCTION__, x, w);
x = MIN(x, s->width);
w = s->width - x;
}
if (y + h > s->height) {
fprintf(stderr, "%s: update height too large y: %d, h: %d\n",
__FUNCTION__, y, h);
y = MIN(y, s->height);
h = s->height - y;
}
line = h;
bypl = s->bypp * s->width;
width = s->bypp * w;
start = s->bypp * x + bypl * y;
src = s->vga.vram_ptr + start;
dst = ds_get_data(s->vga.ds) + start;
for (; line > 0; line --, src += bypl, dst += bypl)
memcpy(dst, src, width);
#endif
dpy_update(s->vga.ds, x, y, w, h);
}
static inline void vmsvga_update_screen(struct vmsvga_state_s *s)
{
#ifndef DIRECT_VRAM
memcpy(ds_get_data(s->vga.ds), s->vga.vram_ptr, s->bypp * s->width * s->height);
#endif
dpy_update(s->vga.ds, 0, 0, s->width, s->height);
}
#ifdef DIRECT_VRAM
# define vmsvga_update_rect_delayed vmsvga_update_rect
#else
static inline void vmsvga_update_rect_delayed(struct vmsvga_state_s *s,
int x, int y, int w, int h)
{
struct vmsvga_rect_s *rect = &s->redraw_fifo[s->redraw_fifo_last ++];
s->redraw_fifo_last &= REDRAW_FIFO_LEN - 1;
rect->x = x;
rect->y = y;
rect->w = w;
rect->h = h;
}
#endif
static inline void vmsvga_update_rect_flush(struct vmsvga_state_s *s)
{
struct vmsvga_rect_s *rect;
if (s->invalidated) {
s->redraw_fifo_first = s->redraw_fifo_last;
return;
}
/* Overlapping region updates can be optimised out here - if someone
* knows a smart algorithm to do that, please share. */
while (s->redraw_fifo_first != s->redraw_fifo_last) {
rect = &s->redraw_fifo[s->redraw_fifo_first ++];
s->redraw_fifo_first &= REDRAW_FIFO_LEN - 1;
vmsvga_update_rect(s, rect->x, rect->y, rect->w, rect->h);
}
}
#ifdef HW_RECT_ACCEL
static inline void vmsvga_copy_rect(struct vmsvga_state_s *s,
int x0, int y0, int x1, int y1, int w, int h)
{
# ifdef DIRECT_VRAM
uint8_t *vram = ds_get_data(s->ds);
# else
uint8_t *vram = s->vga.vram_ptr;
# endif
int bypl = s->bypp * s->width;
int width = s->bypp * w;
int line = h;
uint8_t *ptr[2];
# ifdef DIRECT_VRAM
if (s->ds->dpy_copy)
qemu_console_copy(s->ds, x0, y0, x1, y1, w, h);
else
# endif
{
if (y1 > y0) {
ptr[0] = vram + s->bypp * x0 + bypl * (y0 + h - 1);
ptr[1] = vram + s->bypp * x1 + bypl * (y1 + h - 1);
for (; line > 0; line --, ptr[0] -= bypl, ptr[1] -= bypl)
memmove(ptr[1], ptr[0], width);
} else {
ptr[0] = vram + s->bypp * x0 + bypl * y0;
ptr[1] = vram + s->bypp * x1 + bypl * y1;
for (; line > 0; line --, ptr[0] += bypl, ptr[1] += bypl)
memmove(ptr[1], ptr[0], width);
}
}
vmsvga_update_rect_delayed(s, x1, y1, w, h);
}
#endif
#ifdef HW_FILL_ACCEL
static inline void vmsvga_fill_rect(struct vmsvga_state_s *s,
uint32_t c, int x, int y, int w, int h)
{
# ifdef DIRECT_VRAM
uint8_t *vram = ds_get_data(s->ds);
# else
uint8_t *vram = s->vga.vram_ptr;
# endif
int bypp = s->bypp;
int bypl = bypp * s->width;
int width = bypp * w;
int line = h;
int column;
uint8_t *fst = vram + bypp * x + bypl * y;
uint8_t *dst;
uint8_t *src;
uint8_t col[4];
# ifdef DIRECT_VRAM
if (s->ds->dpy_fill)
s->ds->dpy_fill(s->ds, x, y, w, h, c);
else
# endif
{
col[0] = c;
col[1] = c >> 8;
col[2] = c >> 16;
col[3] = c >> 24;
if (line --) {
dst = fst;
src = col;
for (column = width; column > 0; column --) {
*(dst ++) = *(src ++);
if (src - col == bypp)
src = col;
}
dst = fst;
for (; line > 0; line --) {
dst += bypl;
memcpy(dst, fst, width);
}
}
}
vmsvga_update_rect_delayed(s, x, y, w, h);
}
#endif
struct vmsvga_cursor_definition_s {
int width;
int height;
int id;
int bpp;
int hot_x;
int hot_y;
uint32_t mask[1024];
uint32_t image[4096];
};
#define SVGA_BITMAP_SIZE(w, h) ((((w) + 31) >> 5) * (h))
#define SVGA_PIXMAP_SIZE(w, h, bpp) (((((w) * (bpp)) + 31) >> 5) * (h))
#ifdef HW_MOUSE_ACCEL
static inline void vmsvga_cursor_define(struct vmsvga_state_s *s,
struct vmsvga_cursor_definition_s *c)
{
int i;
for (i = SVGA_BITMAP_SIZE(c->width, c->height) - 1; i >= 0; i --)
c->mask[i] = ~c->mask[i];
if (s->vga.ds->cursor_define)
s->vga.ds->cursor_define(c->width, c->height, c->bpp, c->hot_x, c->hot_y,
(uint8_t *) c->image, (uint8_t *) c->mask);
}
#endif
#define CMD(f) le32_to_cpu(s->cmd->f)
static inline int vmsvga_fifo_empty(struct vmsvga_state_s *s)
{
if (!s->config || !s->enable)
return 1;
return (s->cmd->next_cmd == s->cmd->stop);
}
static inline uint32_t vmsvga_fifo_read_raw(struct vmsvga_state_s *s)
{
uint32_t cmd = s->fifo[CMD(stop) >> 2];
s->cmd->stop = cpu_to_le32(CMD(stop) + 4);
if (CMD(stop) >= CMD(max))
s->cmd->stop = s->cmd->min;
return cmd;
}
static inline uint32_t vmsvga_fifo_read(struct vmsvga_state_s *s)
{
return le32_to_cpu(vmsvga_fifo_read_raw(s));
}
static void vmsvga_fifo_run(struct vmsvga_state_s *s)
{
uint32_t cmd, colour;
int args = 0;
int x, y, dx, dy, width, height;
struct vmsvga_cursor_definition_s cursor;
while (!vmsvga_fifo_empty(s))
switch (cmd = vmsvga_fifo_read(s)) {
case SVGA_CMD_UPDATE:
case SVGA_CMD_UPDATE_VERBOSE:
x = vmsvga_fifo_read(s);
y = vmsvga_fifo_read(s);
width = vmsvga_fifo_read(s);
height = vmsvga_fifo_read(s);
vmsvga_update_rect_delayed(s, x, y, width, height);
break;
case SVGA_CMD_RECT_FILL:
colour = vmsvga_fifo_read(s);
x = vmsvga_fifo_read(s);
y = vmsvga_fifo_read(s);
width = vmsvga_fifo_read(s);
height = vmsvga_fifo_read(s);
#ifdef HW_FILL_ACCEL
vmsvga_fill_rect(s, colour, x, y, width, height);
break;
#else
goto badcmd;
#endif
case SVGA_CMD_RECT_COPY:
x = vmsvga_fifo_read(s);
y = vmsvga_fifo_read(s);
dx = vmsvga_fifo_read(s);
dy = vmsvga_fifo_read(s);
width = vmsvga_fifo_read(s);
height = vmsvga_fifo_read(s);
#ifdef HW_RECT_ACCEL
vmsvga_copy_rect(s, x, y, dx, dy, width, height);
break;
#else
goto badcmd;
#endif
case SVGA_CMD_DEFINE_CURSOR:
cursor.id = vmsvga_fifo_read(s);
cursor.hot_x = vmsvga_fifo_read(s);
cursor.hot_y = vmsvga_fifo_read(s);
cursor.width = x = vmsvga_fifo_read(s);
cursor.height = y = vmsvga_fifo_read(s);
vmsvga_fifo_read(s);
cursor.bpp = vmsvga_fifo_read(s);
if (SVGA_BITMAP_SIZE(x, y) > sizeof cursor.mask ||
SVGA_PIXMAP_SIZE(x, y, cursor.bpp) > sizeof cursor.image) {
args = SVGA_BITMAP_SIZE(x, y) + SVGA_PIXMAP_SIZE(x, y, cursor.bpp);
goto badcmd;
}
for (args = 0; args < SVGA_BITMAP_SIZE(x, y); args ++)
cursor.mask[args] = vmsvga_fifo_read_raw(s);
for (args = 0; args < SVGA_PIXMAP_SIZE(x, y, cursor.bpp); args ++)
cursor.image[args] = vmsvga_fifo_read_raw(s);
#ifdef HW_MOUSE_ACCEL
vmsvga_cursor_define(s, &cursor);
break;
#else
args = 0;
goto badcmd;
#endif
/*
* Other commands that we at least know the number of arguments
* for so we can avoid FIFO desync if driver uses them illegally.
*/
case SVGA_CMD_DEFINE_ALPHA_CURSOR:
vmsvga_fifo_read(s);
vmsvga_fifo_read(s);
vmsvga_fifo_read(s);
x = vmsvga_fifo_read(s);
y = vmsvga_fifo_read(s);
args = x * y;
goto badcmd;
case SVGA_CMD_RECT_ROP_FILL:
args = 6;
goto badcmd;
case SVGA_CMD_RECT_ROP_COPY:
args = 7;
goto badcmd;
case SVGA_CMD_DRAW_GLYPH_CLIPPED:
vmsvga_fifo_read(s);
vmsvga_fifo_read(s);
args = 7 + (vmsvga_fifo_read(s) >> 2);
goto badcmd;
case SVGA_CMD_SURFACE_ALPHA_BLEND:
args = 12;
goto badcmd;
/*
* Other commands that are not listed as depending on any
* CAPABILITIES bits, but are not described in the README either.
*/
case SVGA_CMD_SURFACE_FILL:
case SVGA_CMD_SURFACE_COPY:
case SVGA_CMD_FRONT_ROP_FILL:
case SVGA_CMD_FENCE:
case SVGA_CMD_INVALID_CMD:
break; /* Nop */
default:
badcmd:
while (args --)
vmsvga_fifo_read(s);
printf("%s: Unknown command 0x%02x in SVGA command FIFO\n",
__FUNCTION__, cmd);
break;
}
s->syncing = 0;
}
static uint32_t vmsvga_index_read(void *opaque, uint32_t address)
{
struct vmsvga_state_s *s = opaque;
return s->index;
}
static void vmsvga_index_write(void *opaque, uint32_t address, uint32_t index)
{
struct vmsvga_state_s *s = opaque;
s->index = index;
}
static uint32_t vmsvga_value_read(void *opaque, uint32_t address)
{
uint32_t caps;
struct vmsvga_state_s *s = opaque;
switch (s->index) {
case SVGA_REG_ID:
return s->svgaid;
case SVGA_REG_ENABLE:
return s->enable;
case SVGA_REG_WIDTH:
return s->width;
case SVGA_REG_HEIGHT:
return s->height;
case SVGA_REG_MAX_WIDTH:
return SVGA_MAX_WIDTH;
case SVGA_REG_MAX_HEIGHT:
return SVGA_MAX_HEIGHT;
case SVGA_REG_DEPTH:
return s->depth;
case SVGA_REG_BITS_PER_PIXEL:
return (s->depth + 7) & ~7;
case SVGA_REG_PSEUDOCOLOR:
return 0x0;
case SVGA_REG_RED_MASK:
return s->wred;
case SVGA_REG_GREEN_MASK:
return s->wgreen;
case SVGA_REG_BLUE_MASK:
return s->wblue;
case SVGA_REG_BYTES_PER_LINE:
return ((s->depth + 7) >> 3) * s->new_width;
case SVGA_REG_FB_START:
return s->vram_base;
case SVGA_REG_FB_OFFSET:
return 0x0;
case SVGA_REG_VRAM_SIZE:
return s->vga.vram_size;
case SVGA_REG_FB_SIZE:
return s->fb_size;
case SVGA_REG_CAPABILITIES:
caps = SVGA_CAP_NONE;
#ifdef HW_RECT_ACCEL
caps |= SVGA_CAP_RECT_COPY;
#endif
#ifdef HW_FILL_ACCEL
caps |= SVGA_CAP_RECT_FILL;
#endif
#ifdef HW_MOUSE_ACCEL
if (s->vga.ds->mouse_set)
caps |= SVGA_CAP_CURSOR | SVGA_CAP_CURSOR_BYPASS_2 |
SVGA_CAP_CURSOR_BYPASS;
#endif
return caps;
case SVGA_REG_MEM_START:
return s->fifo_base;
case SVGA_REG_MEM_SIZE:
return s->fifo_size;
case SVGA_REG_CONFIG_DONE:
return s->config;
case SVGA_REG_SYNC:
case SVGA_REG_BUSY:
return s->syncing;
case SVGA_REG_GUEST_ID:
return s->guest;
case SVGA_REG_CURSOR_ID:
return s->cursor.id;
case SVGA_REG_CURSOR_X:
return s->cursor.x;
case SVGA_REG_CURSOR_Y:
return s->cursor.x;
case SVGA_REG_CURSOR_ON:
return s->cursor.on;
case SVGA_REG_HOST_BITS_PER_PIXEL:
return (s->depth + 7) & ~7;
case SVGA_REG_SCRATCH_SIZE:
return s->scratch_size;
case SVGA_REG_MEM_REGS:
case SVGA_REG_NUM_DISPLAYS:
case SVGA_REG_PITCHLOCK:
case SVGA_PALETTE_BASE ... SVGA_PALETTE_END:
return 0;
default:
if (s->index >= SVGA_SCRATCH_BASE &&
s->index < SVGA_SCRATCH_BASE + s->scratch_size)
return s->scratch[s->index - SVGA_SCRATCH_BASE];
printf("%s: Bad register %02x\n", __FUNCTION__, s->index);
}
return 0;
}
static void vmsvga_value_write(void *opaque, uint32_t address, uint32_t value)
{
struct vmsvga_state_s *s = opaque;
switch (s->index) {
case SVGA_REG_ID:
if (value == SVGA_ID_2 || value == SVGA_ID_1 || value == SVGA_ID_0)
s->svgaid = value;
break;
case SVGA_REG_ENABLE:
s->enable = value;
s->config &= !!value;
s->width = -1;
s->height = -1;
s->invalidated = 1;
s->vga.invalidate(&s->vga);
if (s->enable) {
s->fb_size = ((s->depth + 7) >> 3) * s->new_width * s->new_height;
vga_dirty_log_stop(&s->vga);
} else {
vga_dirty_log_start(&s->vga);
}
break;
case SVGA_REG_WIDTH:
s->new_width = value;
s->invalidated = 1;
break;
case SVGA_REG_HEIGHT:
s->new_height = value;
s->invalidated = 1;
break;
case SVGA_REG_DEPTH:
case SVGA_REG_BITS_PER_PIXEL:
if (value != s->depth) {
printf("%s: Bad colour depth: %i bits\n", __FUNCTION__, value);
s->config = 0;
}
break;
case SVGA_REG_CONFIG_DONE:
if (value) {
s->fifo = (uint32_t *) s->fifo_ptr;
/* Check range and alignment. */
if ((CMD(min) | CMD(max) |
CMD(next_cmd) | CMD(stop)) & 3)
break;
if (CMD(min) < (uint8_t *) s->cmd->fifo - (uint8_t *) s->fifo)
break;
if (CMD(max) > SVGA_FIFO_SIZE)
break;
if (CMD(max) < CMD(min) + 10 * 1024)
break;
}
s->config = !!value;
break;
case SVGA_REG_SYNC:
s->syncing = 1;
vmsvga_fifo_run(s); /* Or should we just wait for update_display? */
break;
case SVGA_REG_GUEST_ID:
s->guest = value;
#ifdef VERBOSE
if (value >= GUEST_OS_BASE && value < GUEST_OS_BASE +
ARRAY_SIZE(vmsvga_guest_id))
printf("%s: guest runs %s.\n", __FUNCTION__,
vmsvga_guest_id[value - GUEST_OS_BASE]);
#endif
break;
case SVGA_REG_CURSOR_ID:
s->cursor.id = value;
break;
case SVGA_REG_CURSOR_X:
s->cursor.x = value;
break;
case SVGA_REG_CURSOR_Y:
s->cursor.y = value;
break;
case SVGA_REG_CURSOR_ON:
s->cursor.on |= (value == SVGA_CURSOR_ON_SHOW);
s->cursor.on &= (value != SVGA_CURSOR_ON_HIDE);
#ifdef HW_MOUSE_ACCEL
if (s->vga.ds->mouse_set && value <= SVGA_CURSOR_ON_SHOW)
s->vga.ds->mouse_set(s->cursor.x, s->cursor.y, s->cursor.on);
#endif
break;
case SVGA_REG_MEM_REGS:
case SVGA_REG_NUM_DISPLAYS:
case SVGA_REG_PITCHLOCK:
case SVGA_PALETTE_BASE ... SVGA_PALETTE_END:
break;
default:
if (s->index >= SVGA_SCRATCH_BASE &&
s->index < SVGA_SCRATCH_BASE + s->scratch_size) {
s->scratch[s->index - SVGA_SCRATCH_BASE] = value;
break;
}
printf("%s: Bad register %02x\n", __FUNCTION__, s->index);
}
}
static uint32_t vmsvga_bios_read(void *opaque, uint32_t address)
{
printf("%s: what are we supposed to return?\n", __FUNCTION__);
return 0xcafe;
}
static void vmsvga_bios_write(void *opaque, uint32_t address, uint32_t data)
{
printf("%s: what are we supposed to do with (%08x)?\n",
__FUNCTION__, data);
}
static inline void vmsvga_size(struct vmsvga_state_s *s)
{
if (s->new_width != s->width || s->new_height != s->height) {
s->width = s->new_width;
s->height = s->new_height;
qemu_console_resize(s->vga.ds, s->width, s->height);
s->invalidated = 1;
}
}
static void vmsvga_update_display(void *opaque)
{
struct vmsvga_state_s *s = opaque;
if (!s->enable) {
s->vga.update(&s->vga);
return;
}
vmsvga_size(s);
vmsvga_fifo_run(s);
vmsvga_update_rect_flush(s);
/*
* Is it more efficient to look at vram VGA-dirty bits or wait
* for the driver to issue SVGA_CMD_UPDATE?
*/
if (s->invalidated) {
s->invalidated = 0;
vmsvga_update_screen(s);
}
}
static void vmsvga_reset(struct vmsvga_state_s *s)
{
s->index = 0;
s->enable = 0;
s->config = 0;
s->width = -1;
s->height = -1;
s->svgaid = SVGA_ID;
s->depth = ds_get_bits_per_pixel(s->vga.ds);
s->bypp = ds_get_bytes_per_pixel(s->vga.ds);
s->cursor.on = 0;
s->redraw_fifo_first = 0;
s->redraw_fifo_last = 0;
switch (s->depth) {
case 8:
s->wred = 0x00000007;
s->wgreen = 0x00000038;
s->wblue = 0x000000c0;
break;
case 15:
s->wred = 0x0000001f;
s->wgreen = 0x000003e0;
s->wblue = 0x00007c00;
break;
case 16:
s->wred = 0x0000001f;
s->wgreen = 0x000007e0;
s->wblue = 0x0000f800;
break;
case 24:
s->wred = 0x00ff0000;
s->wgreen = 0x0000ff00;
s->wblue = 0x000000ff;
break;
case 32:
s->wred = 0x00ff0000;
s->wgreen = 0x0000ff00;
s->wblue = 0x000000ff;
break;
}
s->syncing = 0;
vga_dirty_log_start(&s->vga);
}
static void vmsvga_invalidate_display(void *opaque)
{
struct vmsvga_state_s *s = opaque;
if (!s->enable) {
s->vga.invalidate(&s->vga);
return;
}
s->invalidated = 1;
}
/* save the vga display in a PPM image even if no display is
available */
static void vmsvga_screen_dump(void *opaque, const char *filename)
{
struct vmsvga_state_s *s = opaque;
if (!s->enable) {
s->vga.screen_dump(&s->vga, filename);
return;
}
if (s->depth == 32) {
DisplaySurface *ds = qemu_create_displaysurface_from(s->width,
s->height, 32, ds_get_linesize(s->vga.ds), s->vga.vram_ptr);
ppm_save(filename, ds);
qemu_free(ds);
}
}
static void vmsvga_text_update(void *opaque, console_ch_t *chardata)
{
struct vmsvga_state_s *s = opaque;
if (s->vga.text_update)
s->vga.text_update(&s->vga, chardata);
}
#ifdef DIRECT_VRAM
static uint32_t vmsvga_vram_readb(void *opaque, target_phys_addr_t addr)
{
struct vmsvga_state_s *s = opaque;
if (addr < s->fb_size)
return *(uint8_t *) (ds_get_data(s->ds) + addr);
else
return *(uint8_t *) (s->vram_ptr + addr);
}
static uint32_t vmsvga_vram_readw(void *opaque, target_phys_addr_t addr)
{
struct vmsvga_state_s *s = opaque;
if (addr < s->fb_size)
return *(uint16_t *) (ds_get_data(s->ds) + addr);
else
return *(uint16_t *) (s->vram_ptr + addr);
}
static uint32_t vmsvga_vram_readl(void *opaque, target_phys_addr_t addr)
{
struct vmsvga_state_s *s = opaque;
if (addr < s->fb_size)
return *(uint32_t *) (ds_get_data(s->ds) + addr);
else
return *(uint32_t *) (s->vram_ptr + addr);
}
static void vmsvga_vram_writeb(void *opaque, target_phys_addr_t addr,
uint32_t value)
{
struct vmsvga_state_s *s = opaque;
if (addr < s->fb_size)
*(uint8_t *) (ds_get_data(s->ds) + addr) = value;
else
*(uint8_t *) (s->vram_ptr + addr) = value;
}
static void vmsvga_vram_writew(void *opaque, target_phys_addr_t addr,
uint32_t value)
{
struct vmsvga_state_s *s = opaque;
if (addr < s->fb_size)
*(uint16_t *) (ds_get_data(s->ds) + addr) = value;
else
*(uint16_t *) (s->vram_ptr + addr) = value;
}
static void vmsvga_vram_writel(void *opaque, target_phys_addr_t addr,
uint32_t value)
{
struct vmsvga_state_s *s = opaque;
if (addr < s->fb_size)
*(uint32_t *) (ds_get_data(s->ds) + addr) = value;
else
*(uint32_t *) (s->vram_ptr + addr) = value;
}
static CPUReadMemoryFunc * const vmsvga_vram_read[] = {
vmsvga_vram_readb,
vmsvga_vram_readw,
vmsvga_vram_readl,
};
static CPUWriteMemoryFunc * const vmsvga_vram_write[] = {
vmsvga_vram_writeb,
vmsvga_vram_writew,
vmsvga_vram_writel,
};
#endif
static int vmsvga_post_load(void *opaque, int version_id)
{
struct vmsvga_state_s *s = opaque;
s->invalidated = 1;
if (s->config)
s->fifo = (uint32_t *) s->fifo_ptr;
return 0;
}
static const VMStateDescription vmstate_vmware_vga_internal = {
.name = "vmware_vga_internal",
.version_id = 0,
.minimum_version_id = 0,
.minimum_version_id_old = 0,
.post_load = vmsvga_post_load,
.fields = (VMStateField []) {
VMSTATE_INT32_EQUAL(depth, struct vmsvga_state_s),
VMSTATE_INT32(enable, struct vmsvga_state_s),
VMSTATE_INT32(config, struct vmsvga_state_s),
VMSTATE_INT32(cursor.id, struct vmsvga_state_s),
VMSTATE_INT32(cursor.x, struct vmsvga_state_s),
VMSTATE_INT32(cursor.y, struct vmsvga_state_s),
VMSTATE_INT32(cursor.on, struct vmsvga_state_s),
VMSTATE_INT32(index, struct vmsvga_state_s),
VMSTATE_VARRAY_INT32(scratch, struct vmsvga_state_s,
scratch_size, 0, vmstate_info_uint32, uint32_t),
VMSTATE_INT32(new_width, struct vmsvga_state_s),
VMSTATE_INT32(new_height, struct vmsvga_state_s),
VMSTATE_UINT32(guest, struct vmsvga_state_s),
VMSTATE_UINT32(svgaid, struct vmsvga_state_s),
VMSTATE_INT32(syncing, struct vmsvga_state_s),
VMSTATE_INT32(fb_size, struct vmsvga_state_s),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_vmware_vga = {
.name = "vmware_vga",
.version_id = 0,
.minimum_version_id = 0,
.minimum_version_id_old = 0,
.fields = (VMStateField []) {
VMSTATE_PCI_DEVICE(card, struct pci_vmsvga_state_s),
VMSTATE_STRUCT(chip, struct pci_vmsvga_state_s, 0,
vmstate_vmware_vga_internal, struct vmsvga_state_s),
VMSTATE_END_OF_LIST()
}
};
static void vmsvga_init(struct vmsvga_state_s *s, int vga_ram_size)
{
s->scratch_size = SVGA_SCRATCH_SIZE;
s->scratch = qemu_malloc(s->scratch_size * 4);
s->vga.ds = graphic_console_init(vmsvga_update_display,
vmsvga_invalidate_display,
vmsvga_screen_dump,
vmsvga_text_update, s);
s->fifo_size = SVGA_FIFO_SIZE;
s->fifo_offset = qemu_ram_alloc(s->fifo_size);
s->fifo_ptr = qemu_get_ram_ptr(s->fifo_offset);
vga_common_init(&s->vga, vga_ram_size);
vga_init(&s->vga);
vmstate_register(0, &vmstate_vga_common, &s->vga);
vga_init_vbe(&s->vga);
rom_add_vga(VGABIOS_FILENAME);
vmsvga_reset(s);
}
static void pci_vmsvga_map_ioport(PCIDevice *pci_dev, int region_num,
pcibus_t addr, pcibus_t size, int type)
{
struct pci_vmsvga_state_s *d = (struct pci_vmsvga_state_s *) pci_dev;
struct vmsvga_state_s *s = &d->chip;
register_ioport_read(addr + SVGA_IO_MUL * SVGA_INDEX_PORT,
1, 4, vmsvga_index_read, s);
register_ioport_write(addr + SVGA_IO_MUL * SVGA_INDEX_PORT,
1, 4, vmsvga_index_write, s);
register_ioport_read(addr + SVGA_IO_MUL * SVGA_VALUE_PORT,
1, 4, vmsvga_value_read, s);
register_ioport_write(addr + SVGA_IO_MUL * SVGA_VALUE_PORT,
1, 4, vmsvga_value_write, s);
register_ioport_read(addr + SVGA_IO_MUL * SVGA_BIOS_PORT,
1, 4, vmsvga_bios_read, s);
register_ioport_write(addr + SVGA_IO_MUL * SVGA_BIOS_PORT,
1, 4, vmsvga_bios_write, s);
}
static void pci_vmsvga_map_mem(PCIDevice *pci_dev, int region_num,
pcibus_t addr, pcibus_t size, int type)
{
struct pci_vmsvga_state_s *d = (struct pci_vmsvga_state_s *) pci_dev;
struct vmsvga_state_s *s = &d->chip;
ram_addr_t iomemtype;
s->vram_base = addr;
#ifdef DIRECT_VRAM
iomemtype = cpu_register_io_memory(vmsvga_vram_read,
vmsvga_vram_write, s);
#else
iomemtype = s->vga.vram_offset | IO_MEM_RAM;
#endif
cpu_register_physical_memory(s->vram_base, s->vga.vram_size,
iomemtype);
s->vga.map_addr = addr;
s->vga.map_end = addr + s->vga.vram_size;
vga_dirty_log_restart(&s->vga);
}
static void pci_vmsvga_map_fifo(PCIDevice *pci_dev, int region_num,
pcibus_t addr, pcibus_t size, int type)
{
struct pci_vmsvga_state_s *d = (struct pci_vmsvga_state_s *) pci_dev;
struct vmsvga_state_s *s = &d->chip;
ram_addr_t iomemtype;
s->fifo_base = addr;
iomemtype = s->fifo_offset | IO_MEM_RAM;
cpu_register_physical_memory(s->fifo_base, s->fifo_size,
iomemtype);
}
static int pci_vmsvga_initfn(PCIDevice *dev)
{
struct pci_vmsvga_state_s *s =
DO_UPCAST(struct pci_vmsvga_state_s, card, dev);
pci_config_set_vendor_id(s->card.config, PCI_VENDOR_ID_VMWARE);
pci_config_set_device_id(s->card.config, SVGA_PCI_DEVICE_ID);
s->card.config[PCI_COMMAND] = PCI_COMMAND_IO |
PCI_COMMAND_MEMORY |
PCI_COMMAND_MASTER; /* I/O + Memory */
pci_config_set_class(s->card.config, PCI_CLASS_DISPLAY_VGA);
s->card.config[PCI_CACHE_LINE_SIZE] = 0x08; /* Cache line size */
s->card.config[PCI_LATENCY_TIMER] = 0x40; /* Latency timer */
s->card.config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL;
s->card.config[PCI_SUBSYSTEM_VENDOR_ID] = PCI_VENDOR_ID_VMWARE & 0xff;
s->card.config[PCI_SUBSYSTEM_VENDOR_ID + 1] = PCI_VENDOR_ID_VMWARE >> 8;
s->card.config[PCI_SUBSYSTEM_ID] = SVGA_PCI_DEVICE_ID & 0xff;
s->card.config[PCI_SUBSYSTEM_ID + 1] = SVGA_PCI_DEVICE_ID >> 8;
s->card.config[PCI_INTERRUPT_LINE] = 0xff; /* End */
pci_register_bar(&s->card, 0, 0x10,
PCI_BASE_ADDRESS_SPACE_IO, pci_vmsvga_map_ioport);
pci_register_bar(&s->card, 1, VGA_RAM_SIZE,
PCI_BASE_ADDRESS_MEM_PREFETCH, pci_vmsvga_map_mem);
pci_register_bar(&s->card, 2, SVGA_FIFO_SIZE,
PCI_BASE_ADDRESS_MEM_PREFETCH, pci_vmsvga_map_fifo);
vmsvga_init(&s->chip, VGA_RAM_SIZE);
return 0;
}
void pci_vmsvga_init(PCIBus *bus)
{
pci_create_simple(bus, -1, "vmware-svga");
}
static PCIDeviceInfo vmsvga_info = {
.qdev.name = "vmware-svga",
.qdev.size = sizeof(struct pci_vmsvga_state_s),
.qdev.vmsd = &vmstate_vmware_vga,
.init = pci_vmsvga_initfn,
};
static void vmsvga_register(void)
{
pci_qdev_register(&vmsvga_info);
}
device_init(vmsvga_register);
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