xref: /qemu/hw/display/vmware_vga.c (revision 14b61600)
1 /*
2  * QEMU VMware-SVGA "chipset".
3  *
4  * Copyright (c) 2007 Andrzej Zaborowski  <balrog@zabor.org>
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a copy
7  * of this software and associated documentation files (the "Software"), to deal
8  * in the Software without restriction, including without limitation the rights
9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  * copies of the Software, and to permit persons to whom the Software is
11  * furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22  * THE SOFTWARE.
23  */
24 #include "hw/hw.h"
25 #include "hw/loader.h"
26 #include "trace.h"
27 #include "ui/console.h"
28 #include "ui/vnc.h"
29 #include "hw/pci/pci.h"
30 
31 #undef VERBOSE
32 #define HW_RECT_ACCEL
33 #define HW_FILL_ACCEL
34 #define HW_MOUSE_ACCEL
35 
36 #include "vga_int.h"
37 
38 /* See http://vmware-svga.sf.net/ for some documentation on VMWare SVGA */
39 
40 struct vmsvga_state_s {
41     VGACommonState vga;
42 
43     int invalidated;
44     int enable;
45     int config;
46     struct {
47         int id;
48         int x;
49         int y;
50         int on;
51     } cursor;
52 
53     int index;
54     int scratch_size;
55     uint32_t *scratch;
56     int new_width;
57     int new_height;
58     int new_depth;
59     uint32_t guest;
60     uint32_t svgaid;
61     int syncing;
62 
63     MemoryRegion fifo_ram;
64     uint8_t *fifo_ptr;
65     unsigned int fifo_size;
66 
67     union {
68         uint32_t *fifo;
69         struct QEMU_PACKED {
70             uint32_t min;
71             uint32_t max;
72             uint32_t next_cmd;
73             uint32_t stop;
74             /* Add registers here when adding capabilities.  */
75             uint32_t fifo[0];
76         } *cmd;
77     };
78 
79 #define REDRAW_FIFO_LEN  512
80     struct vmsvga_rect_s {
81         int x, y, w, h;
82     } redraw_fifo[REDRAW_FIFO_LEN];
83     int redraw_fifo_first, redraw_fifo_last;
84 };
85 
86 #define TYPE_VMWARE_SVGA "vmware-svga"
87 
88 #define VMWARE_SVGA(obj) \
89     OBJECT_CHECK(struct pci_vmsvga_state_s, (obj), TYPE_VMWARE_SVGA)
90 
91 struct pci_vmsvga_state_s {
92     /*< private >*/
93     PCIDevice parent_obj;
94     /*< public >*/
95 
96     struct vmsvga_state_s chip;
97     MemoryRegion io_bar;
98 };
99 
100 #define SVGA_MAGIC              0x900000UL
101 #define SVGA_MAKE_ID(ver)       (SVGA_MAGIC << 8 | (ver))
102 #define SVGA_ID_0               SVGA_MAKE_ID(0)
103 #define SVGA_ID_1               SVGA_MAKE_ID(1)
104 #define SVGA_ID_2               SVGA_MAKE_ID(2)
105 
106 #define SVGA_LEGACY_BASE_PORT   0x4560
107 #define SVGA_INDEX_PORT         0x0
108 #define SVGA_VALUE_PORT         0x1
109 #define SVGA_BIOS_PORT          0x2
110 
111 #define SVGA_VERSION_2
112 
113 #ifdef SVGA_VERSION_2
114 # define SVGA_ID                SVGA_ID_2
115 # define SVGA_IO_BASE           SVGA_LEGACY_BASE_PORT
116 # define SVGA_IO_MUL            1
117 # define SVGA_FIFO_SIZE         0x10000
118 # define SVGA_PCI_DEVICE_ID     PCI_DEVICE_ID_VMWARE_SVGA2
119 #else
120 # define SVGA_ID                SVGA_ID_1
121 # define SVGA_IO_BASE           SVGA_LEGACY_BASE_PORT
122 # define SVGA_IO_MUL            4
123 # define SVGA_FIFO_SIZE         0x10000
124 # define SVGA_PCI_DEVICE_ID     PCI_DEVICE_ID_VMWARE_SVGA
125 #endif
126 
127 enum {
128     /* ID 0, 1 and 2 registers */
129     SVGA_REG_ID = 0,
130     SVGA_REG_ENABLE = 1,
131     SVGA_REG_WIDTH = 2,
132     SVGA_REG_HEIGHT = 3,
133     SVGA_REG_MAX_WIDTH = 4,
134     SVGA_REG_MAX_HEIGHT = 5,
135     SVGA_REG_DEPTH = 6,
136     SVGA_REG_BITS_PER_PIXEL = 7,        /* Current bpp in the guest */
137     SVGA_REG_PSEUDOCOLOR = 8,
138     SVGA_REG_RED_MASK = 9,
139     SVGA_REG_GREEN_MASK = 10,
140     SVGA_REG_BLUE_MASK = 11,
141     SVGA_REG_BYTES_PER_LINE = 12,
142     SVGA_REG_FB_START = 13,
143     SVGA_REG_FB_OFFSET = 14,
144     SVGA_REG_VRAM_SIZE = 15,
145     SVGA_REG_FB_SIZE = 16,
146 
147     /* ID 1 and 2 registers */
148     SVGA_REG_CAPABILITIES = 17,
149     SVGA_REG_MEM_START = 18,            /* Memory for command FIFO */
150     SVGA_REG_MEM_SIZE = 19,
151     SVGA_REG_CONFIG_DONE = 20,          /* Set when memory area configured */
152     SVGA_REG_SYNC = 21,                 /* Write to force synchronization */
153     SVGA_REG_BUSY = 22,                 /* Read to check if sync is done */
154     SVGA_REG_GUEST_ID = 23,             /* Set guest OS identifier */
155     SVGA_REG_CURSOR_ID = 24,            /* ID of cursor */
156     SVGA_REG_CURSOR_X = 25,             /* Set cursor X position */
157     SVGA_REG_CURSOR_Y = 26,             /* Set cursor Y position */
158     SVGA_REG_CURSOR_ON = 27,            /* Turn cursor on/off */
159     SVGA_REG_HOST_BITS_PER_PIXEL = 28,  /* Current bpp in the host */
160     SVGA_REG_SCRATCH_SIZE = 29,         /* Number of scratch registers */
161     SVGA_REG_MEM_REGS = 30,             /* Number of FIFO registers */
162     SVGA_REG_NUM_DISPLAYS = 31,         /* Number of guest displays */
163     SVGA_REG_PITCHLOCK = 32,            /* Fixed pitch for all modes */
164 
165     SVGA_PALETTE_BASE = 1024,           /* Base of SVGA color map */
166     SVGA_PALETTE_END  = SVGA_PALETTE_BASE + 767,
167     SVGA_SCRATCH_BASE = SVGA_PALETTE_BASE + 768,
168 };
169 
170 #define SVGA_CAP_NONE                   0
171 #define SVGA_CAP_RECT_FILL              (1 << 0)
172 #define SVGA_CAP_RECT_COPY              (1 << 1)
173 #define SVGA_CAP_RECT_PAT_FILL          (1 << 2)
174 #define SVGA_CAP_LEGACY_OFFSCREEN       (1 << 3)
175 #define SVGA_CAP_RASTER_OP              (1 << 4)
176 #define SVGA_CAP_CURSOR                 (1 << 5)
177 #define SVGA_CAP_CURSOR_BYPASS          (1 << 6)
178 #define SVGA_CAP_CURSOR_BYPASS_2        (1 << 7)
179 #define SVGA_CAP_8BIT_EMULATION         (1 << 8)
180 #define SVGA_CAP_ALPHA_CURSOR           (1 << 9)
181 #define SVGA_CAP_GLYPH                  (1 << 10)
182 #define SVGA_CAP_GLYPH_CLIPPING         (1 << 11)
183 #define SVGA_CAP_OFFSCREEN_1            (1 << 12)
184 #define SVGA_CAP_ALPHA_BLEND            (1 << 13)
185 #define SVGA_CAP_3D                     (1 << 14)
186 #define SVGA_CAP_EXTENDED_FIFO          (1 << 15)
187 #define SVGA_CAP_MULTIMON               (1 << 16)
188 #define SVGA_CAP_PITCHLOCK              (1 << 17)
189 
190 /*
191  * FIFO offsets (seen as an array of 32-bit words)
192  */
193 enum {
194     /*
195      * The original defined FIFO offsets
196      */
197     SVGA_FIFO_MIN = 0,
198     SVGA_FIFO_MAX,      /* The distance from MIN to MAX must be at least 10K */
199     SVGA_FIFO_NEXT_CMD,
200     SVGA_FIFO_STOP,
201 
202     /*
203      * Additional offsets added as of SVGA_CAP_EXTENDED_FIFO
204      */
205     SVGA_FIFO_CAPABILITIES = 4,
206     SVGA_FIFO_FLAGS,
207     SVGA_FIFO_FENCE,
208     SVGA_FIFO_3D_HWVERSION,
209     SVGA_FIFO_PITCHLOCK,
210 };
211 
212 #define SVGA_FIFO_CAP_NONE              0
213 #define SVGA_FIFO_CAP_FENCE             (1 << 0)
214 #define SVGA_FIFO_CAP_ACCELFRONT        (1 << 1)
215 #define SVGA_FIFO_CAP_PITCHLOCK         (1 << 2)
216 
217 #define SVGA_FIFO_FLAG_NONE             0
218 #define SVGA_FIFO_FLAG_ACCELFRONT       (1 << 0)
219 
220 /* These values can probably be changed arbitrarily.  */
221 #define SVGA_SCRATCH_SIZE               0x8000
222 #define SVGA_MAX_WIDTH                  ROUND_UP(2360, VNC_DIRTY_PIXELS_PER_BIT)
223 #define SVGA_MAX_HEIGHT                 1770
224 
225 #ifdef VERBOSE
226 # define GUEST_OS_BASE          0x5001
227 static const char *vmsvga_guest_id[] = {
228     [0x00] = "Dos",
229     [0x01] = "Windows 3.1",
230     [0x02] = "Windows 95",
231     [0x03] = "Windows 98",
232     [0x04] = "Windows ME",
233     [0x05] = "Windows NT",
234     [0x06] = "Windows 2000",
235     [0x07] = "Linux",
236     [0x08] = "OS/2",
237     [0x09] = "an unknown OS",
238     [0x0a] = "BSD",
239     [0x0b] = "Whistler",
240     [0x0c] = "an unknown OS",
241     [0x0d] = "an unknown OS",
242     [0x0e] = "an unknown OS",
243     [0x0f] = "an unknown OS",
244     [0x10] = "an unknown OS",
245     [0x11] = "an unknown OS",
246     [0x12] = "an unknown OS",
247     [0x13] = "an unknown OS",
248     [0x14] = "an unknown OS",
249     [0x15] = "Windows 2003",
250 };
251 #endif
252 
253 enum {
254     SVGA_CMD_INVALID_CMD = 0,
255     SVGA_CMD_UPDATE = 1,
256     SVGA_CMD_RECT_FILL = 2,
257     SVGA_CMD_RECT_COPY = 3,
258     SVGA_CMD_DEFINE_BITMAP = 4,
259     SVGA_CMD_DEFINE_BITMAP_SCANLINE = 5,
260     SVGA_CMD_DEFINE_PIXMAP = 6,
261     SVGA_CMD_DEFINE_PIXMAP_SCANLINE = 7,
262     SVGA_CMD_RECT_BITMAP_FILL = 8,
263     SVGA_CMD_RECT_PIXMAP_FILL = 9,
264     SVGA_CMD_RECT_BITMAP_COPY = 10,
265     SVGA_CMD_RECT_PIXMAP_COPY = 11,
266     SVGA_CMD_FREE_OBJECT = 12,
267     SVGA_CMD_RECT_ROP_FILL = 13,
268     SVGA_CMD_RECT_ROP_COPY = 14,
269     SVGA_CMD_RECT_ROP_BITMAP_FILL = 15,
270     SVGA_CMD_RECT_ROP_PIXMAP_FILL = 16,
271     SVGA_CMD_RECT_ROP_BITMAP_COPY = 17,
272     SVGA_CMD_RECT_ROP_PIXMAP_COPY = 18,
273     SVGA_CMD_DEFINE_CURSOR = 19,
274     SVGA_CMD_DISPLAY_CURSOR = 20,
275     SVGA_CMD_MOVE_CURSOR = 21,
276     SVGA_CMD_DEFINE_ALPHA_CURSOR = 22,
277     SVGA_CMD_DRAW_GLYPH = 23,
278     SVGA_CMD_DRAW_GLYPH_CLIPPED = 24,
279     SVGA_CMD_UPDATE_VERBOSE = 25,
280     SVGA_CMD_SURFACE_FILL = 26,
281     SVGA_CMD_SURFACE_COPY = 27,
282     SVGA_CMD_SURFACE_ALPHA_BLEND = 28,
283     SVGA_CMD_FRONT_ROP_FILL = 29,
284     SVGA_CMD_FENCE = 30,
285 };
286 
287 /* Legal values for the SVGA_REG_CURSOR_ON register in cursor bypass mode */
288 enum {
289     SVGA_CURSOR_ON_HIDE = 0,
290     SVGA_CURSOR_ON_SHOW = 1,
291     SVGA_CURSOR_ON_REMOVE_FROM_FB = 2,
292     SVGA_CURSOR_ON_RESTORE_TO_FB = 3,
293 };
294 
295 static inline bool vmsvga_verify_rect(DisplaySurface *surface,
296                                       const char *name,
297                                       int x, int y, int w, int h)
298 {
299     if (x < 0) {
300         fprintf(stderr, "%s: x was < 0 (%d)\n", name, x);
301         return false;
302     }
303     if (x > SVGA_MAX_WIDTH) {
304         fprintf(stderr, "%s: x was > %d (%d)\n", name, SVGA_MAX_WIDTH, x);
305         return false;
306     }
307     if (w < 0) {
308         fprintf(stderr, "%s: w was < 0 (%d)\n", name, w);
309         return false;
310     }
311     if (w > SVGA_MAX_WIDTH) {
312         fprintf(stderr, "%s: w was > %d (%d)\n", name, SVGA_MAX_WIDTH, w);
313         return false;
314     }
315     if (x + w > surface_width(surface)) {
316         fprintf(stderr, "%s: width was > %d (x: %d, w: %d)\n",
317                 name, surface_width(surface), x, w);
318         return false;
319     }
320 
321     if (y < 0) {
322         fprintf(stderr, "%s: y was < 0 (%d)\n", name, y);
323         return false;
324     }
325     if (y > SVGA_MAX_HEIGHT) {
326         fprintf(stderr, "%s: y was > %d (%d)\n", name, SVGA_MAX_HEIGHT, y);
327         return false;
328     }
329     if (h < 0) {
330         fprintf(stderr, "%s: h was < 0 (%d)\n", name, h);
331         return false;
332     }
333     if (h > SVGA_MAX_HEIGHT) {
334         fprintf(stderr, "%s: h was > %d (%d)\n", name, SVGA_MAX_HEIGHT, h);
335         return false;
336     }
337     if (y + h > surface_height(surface)) {
338         fprintf(stderr, "%s: update height > %d (y: %d, h: %d)\n",
339                 name, surface_height(surface), y, h);
340         return false;
341     }
342 
343     return true;
344 }
345 
346 static inline void vmsvga_update_rect(struct vmsvga_state_s *s,
347                                       int x, int y, int w, int h)
348 {
349     DisplaySurface *surface = qemu_console_surface(s->vga.con);
350     int line;
351     int bypl;
352     int width;
353     int start;
354     uint8_t *src;
355     uint8_t *dst;
356 
357     if (!vmsvga_verify_rect(surface, __func__, x, y, w, h)) {
358         /* go for a fullscreen update as fallback */
359         x = 0;
360         y = 0;
361         w = surface_width(surface);
362         h = surface_height(surface);
363     }
364 
365     bypl = surface_stride(surface);
366     width = surface_bytes_per_pixel(surface) * w;
367     start = surface_bytes_per_pixel(surface) * x + bypl * y;
368     src = s->vga.vram_ptr + start;
369     dst = surface_data(surface) + start;
370 
371     for (line = h; line > 0; line--, src += bypl, dst += bypl) {
372         memcpy(dst, src, width);
373     }
374     dpy_gfx_update(s->vga.con, x, y, w, h);
375 }
376 
377 static inline void vmsvga_update_rect_delayed(struct vmsvga_state_s *s,
378                 int x, int y, int w, int h)
379 {
380     struct vmsvga_rect_s *rect = &s->redraw_fifo[s->redraw_fifo_last++];
381 
382     s->redraw_fifo_last &= REDRAW_FIFO_LEN - 1;
383     rect->x = x;
384     rect->y = y;
385     rect->w = w;
386     rect->h = h;
387 }
388 
389 static inline void vmsvga_update_rect_flush(struct vmsvga_state_s *s)
390 {
391     struct vmsvga_rect_s *rect;
392 
393     if (s->invalidated) {
394         s->redraw_fifo_first = s->redraw_fifo_last;
395         return;
396     }
397     /* Overlapping region updates can be optimised out here - if someone
398      * knows a smart algorithm to do that, please share.  */
399     while (s->redraw_fifo_first != s->redraw_fifo_last) {
400         rect = &s->redraw_fifo[s->redraw_fifo_first++];
401         s->redraw_fifo_first &= REDRAW_FIFO_LEN - 1;
402         vmsvga_update_rect(s, rect->x, rect->y, rect->w, rect->h);
403     }
404 }
405 
406 #ifdef HW_RECT_ACCEL
407 static inline int vmsvga_copy_rect(struct vmsvga_state_s *s,
408                 int x0, int y0, int x1, int y1, int w, int h)
409 {
410     DisplaySurface *surface = qemu_console_surface(s->vga.con);
411     uint8_t *vram = s->vga.vram_ptr;
412     int bypl = surface_stride(surface);
413     int bypp = surface_bytes_per_pixel(surface);
414     int width = bypp * w;
415     int line = h;
416     uint8_t *ptr[2];
417 
418     if (!vmsvga_verify_rect(surface, "vmsvga_copy_rect/src", x0, y0, w, h)) {
419         return -1;
420     }
421     if (!vmsvga_verify_rect(surface, "vmsvga_copy_rect/dst", x1, y1, w, h)) {
422         return -1;
423     }
424 
425     if (y1 > y0) {
426         ptr[0] = vram + bypp * x0 + bypl * (y0 + h - 1);
427         ptr[1] = vram + bypp * x1 + bypl * (y1 + h - 1);
428         for (; line > 0; line --, ptr[0] -= bypl, ptr[1] -= bypl) {
429             memmove(ptr[1], ptr[0], width);
430         }
431     } else {
432         ptr[0] = vram + bypp * x0 + bypl * y0;
433         ptr[1] = vram + bypp * x1 + bypl * y1;
434         for (; line > 0; line --, ptr[0] += bypl, ptr[1] += bypl) {
435             memmove(ptr[1], ptr[0], width);
436         }
437     }
438 
439     vmsvga_update_rect_delayed(s, x1, y1, w, h);
440     return 0;
441 }
442 #endif
443 
444 #ifdef HW_FILL_ACCEL
445 static inline int vmsvga_fill_rect(struct vmsvga_state_s *s,
446                 uint32_t c, int x, int y, int w, int h)
447 {
448     DisplaySurface *surface = qemu_console_surface(s->vga.con);
449     int bypl = surface_stride(surface);
450     int width = surface_bytes_per_pixel(surface) * w;
451     int line = h;
452     int column;
453     uint8_t *fst;
454     uint8_t *dst;
455     uint8_t *src;
456     uint8_t col[4];
457 
458     if (!vmsvga_verify_rect(surface, __func__, x, y, w, h)) {
459         return -1;
460     }
461 
462     col[0] = c;
463     col[1] = c >> 8;
464     col[2] = c >> 16;
465     col[3] = c >> 24;
466 
467     fst = s->vga.vram_ptr + surface_bytes_per_pixel(surface) * x + bypl * y;
468 
469     if (line--) {
470         dst = fst;
471         src = col;
472         for (column = width; column > 0; column--) {
473             *(dst++) = *(src++);
474             if (src - col == surface_bytes_per_pixel(surface)) {
475                 src = col;
476             }
477         }
478         dst = fst;
479         for (; line > 0; line--) {
480             dst += bypl;
481             memcpy(dst, fst, width);
482         }
483     }
484 
485     vmsvga_update_rect_delayed(s, x, y, w, h);
486     return 0;
487 }
488 #endif
489 
490 struct vmsvga_cursor_definition_s {
491     uint32_t width;
492     uint32_t height;
493     int id;
494     uint32_t bpp;
495     int hot_x;
496     int hot_y;
497     uint32_t mask[1024];
498     uint32_t image[4096];
499 };
500 
501 #define SVGA_BITMAP_SIZE(w, h)          ((((w) + 31) >> 5) * (h))
502 #define SVGA_PIXMAP_SIZE(w, h, bpp)     (((((w) * (bpp)) + 31) >> 5) * (h))
503 
504 #ifdef HW_MOUSE_ACCEL
505 static inline void vmsvga_cursor_define(struct vmsvga_state_s *s,
506                 struct vmsvga_cursor_definition_s *c)
507 {
508     QEMUCursor *qc;
509     int i, pixels;
510 
511     qc = cursor_alloc(c->width, c->height);
512     qc->hot_x = c->hot_x;
513     qc->hot_y = c->hot_y;
514     switch (c->bpp) {
515     case 1:
516         cursor_set_mono(qc, 0xffffff, 0x000000, (void *)c->image,
517                         1, (void *)c->mask);
518 #ifdef DEBUG
519         cursor_print_ascii_art(qc, "vmware/mono");
520 #endif
521         break;
522     case 32:
523         /* fill alpha channel from mask, set color to zero */
524         cursor_set_mono(qc, 0x000000, 0x000000, (void *)c->mask,
525                         1, (void *)c->mask);
526         /* add in rgb values */
527         pixels = c->width * c->height;
528         for (i = 0; i < pixels; i++) {
529             qc->data[i] |= c->image[i] & 0xffffff;
530         }
531 #ifdef DEBUG
532         cursor_print_ascii_art(qc, "vmware/32bit");
533 #endif
534         break;
535     default:
536         fprintf(stderr, "%s: unhandled bpp %d, using fallback cursor\n",
537                 __func__, c->bpp);
538         cursor_put(qc);
539         qc = cursor_builtin_left_ptr();
540     }
541 
542     dpy_cursor_define(s->vga.con, qc);
543     cursor_put(qc);
544 }
545 #endif
546 
547 #define CMD(f)  le32_to_cpu(s->cmd->f)
548 
549 static inline int vmsvga_fifo_length(struct vmsvga_state_s *s)
550 {
551     int num;
552 
553     if (!s->config || !s->enable) {
554         return 0;
555     }
556     num = CMD(next_cmd) - CMD(stop);
557     if (num < 0) {
558         num += CMD(max) - CMD(min);
559     }
560     return num >> 2;
561 }
562 
563 static inline uint32_t vmsvga_fifo_read_raw(struct vmsvga_state_s *s)
564 {
565     uint32_t cmd = s->fifo[CMD(stop) >> 2];
566 
567     s->cmd->stop = cpu_to_le32(CMD(stop) + 4);
568     if (CMD(stop) >= CMD(max)) {
569         s->cmd->stop = s->cmd->min;
570     }
571     return cmd;
572 }
573 
574 static inline uint32_t vmsvga_fifo_read(struct vmsvga_state_s *s)
575 {
576     return le32_to_cpu(vmsvga_fifo_read_raw(s));
577 }
578 
579 static void vmsvga_fifo_run(struct vmsvga_state_s *s)
580 {
581     uint32_t cmd, colour;
582     int args, len;
583     int x, y, dx, dy, width, height;
584     struct vmsvga_cursor_definition_s cursor;
585     uint32_t cmd_start;
586 
587     len = vmsvga_fifo_length(s);
588     while (len > 0) {
589         /* May need to go back to the start of the command if incomplete */
590         cmd_start = s->cmd->stop;
591 
592         switch (cmd = vmsvga_fifo_read(s)) {
593         case SVGA_CMD_UPDATE:
594         case SVGA_CMD_UPDATE_VERBOSE:
595             len -= 5;
596             if (len < 0) {
597                 goto rewind;
598             }
599 
600             x = vmsvga_fifo_read(s);
601             y = vmsvga_fifo_read(s);
602             width = vmsvga_fifo_read(s);
603             height = vmsvga_fifo_read(s);
604             vmsvga_update_rect_delayed(s, x, y, width, height);
605             break;
606 
607         case SVGA_CMD_RECT_FILL:
608             len -= 6;
609             if (len < 0) {
610                 goto rewind;
611             }
612 
613             colour = vmsvga_fifo_read(s);
614             x = vmsvga_fifo_read(s);
615             y = vmsvga_fifo_read(s);
616             width = vmsvga_fifo_read(s);
617             height = vmsvga_fifo_read(s);
618 #ifdef HW_FILL_ACCEL
619             if (vmsvga_fill_rect(s, colour, x, y, width, height) == 0) {
620                 break;
621             }
622 #endif
623             args = 0;
624             goto badcmd;
625 
626         case SVGA_CMD_RECT_COPY:
627             len -= 7;
628             if (len < 0) {
629                 goto rewind;
630             }
631 
632             x = vmsvga_fifo_read(s);
633             y = vmsvga_fifo_read(s);
634             dx = vmsvga_fifo_read(s);
635             dy = vmsvga_fifo_read(s);
636             width = vmsvga_fifo_read(s);
637             height = vmsvga_fifo_read(s);
638 #ifdef HW_RECT_ACCEL
639             if (vmsvga_copy_rect(s, x, y, dx, dy, width, height) == 0) {
640                 break;
641             }
642 #endif
643             args = 0;
644             goto badcmd;
645 
646         case SVGA_CMD_DEFINE_CURSOR:
647             len -= 8;
648             if (len < 0) {
649                 goto rewind;
650             }
651 
652             cursor.id = vmsvga_fifo_read(s);
653             cursor.hot_x = vmsvga_fifo_read(s);
654             cursor.hot_y = vmsvga_fifo_read(s);
655             cursor.width = x = vmsvga_fifo_read(s);
656             cursor.height = y = vmsvga_fifo_read(s);
657             vmsvga_fifo_read(s);
658             cursor.bpp = vmsvga_fifo_read(s);
659 
660             args = SVGA_BITMAP_SIZE(x, y) + SVGA_PIXMAP_SIZE(x, y, cursor.bpp);
661             if (cursor.width > 256 ||
662                 cursor.height > 256 ||
663                 cursor.bpp > 32 ||
664                 SVGA_BITMAP_SIZE(x, y) > sizeof cursor.mask ||
665                 SVGA_PIXMAP_SIZE(x, y, cursor.bpp) > sizeof cursor.image) {
666                     goto badcmd;
667             }
668 
669             len -= args;
670             if (len < 0) {
671                 goto rewind;
672             }
673 
674             for (args = 0; args < SVGA_BITMAP_SIZE(x, y); args++) {
675                 cursor.mask[args] = vmsvga_fifo_read_raw(s);
676             }
677             for (args = 0; args < SVGA_PIXMAP_SIZE(x, y, cursor.bpp); args++) {
678                 cursor.image[args] = vmsvga_fifo_read_raw(s);
679             }
680 #ifdef HW_MOUSE_ACCEL
681             vmsvga_cursor_define(s, &cursor);
682             break;
683 #else
684             args = 0;
685             goto badcmd;
686 #endif
687 
688         /*
689          * Other commands that we at least know the number of arguments
690          * for so we can avoid FIFO desync if driver uses them illegally.
691          */
692         case SVGA_CMD_DEFINE_ALPHA_CURSOR:
693             len -= 6;
694             if (len < 0) {
695                 goto rewind;
696             }
697             vmsvga_fifo_read(s);
698             vmsvga_fifo_read(s);
699             vmsvga_fifo_read(s);
700             x = vmsvga_fifo_read(s);
701             y = vmsvga_fifo_read(s);
702             args = x * y;
703             goto badcmd;
704         case SVGA_CMD_RECT_ROP_FILL:
705             args = 6;
706             goto badcmd;
707         case SVGA_CMD_RECT_ROP_COPY:
708             args = 7;
709             goto badcmd;
710         case SVGA_CMD_DRAW_GLYPH_CLIPPED:
711             len -= 4;
712             if (len < 0) {
713                 goto rewind;
714             }
715             vmsvga_fifo_read(s);
716             vmsvga_fifo_read(s);
717             args = 7 + (vmsvga_fifo_read(s) >> 2);
718             goto badcmd;
719         case SVGA_CMD_SURFACE_ALPHA_BLEND:
720             args = 12;
721             goto badcmd;
722 
723         /*
724          * Other commands that are not listed as depending on any
725          * CAPABILITIES bits, but are not described in the README either.
726          */
727         case SVGA_CMD_SURFACE_FILL:
728         case SVGA_CMD_SURFACE_COPY:
729         case SVGA_CMD_FRONT_ROP_FILL:
730         case SVGA_CMD_FENCE:
731         case SVGA_CMD_INVALID_CMD:
732             break; /* Nop */
733 
734         default:
735             args = 0;
736         badcmd:
737             len -= args;
738             if (len < 0) {
739                 goto rewind;
740             }
741             while (args--) {
742                 vmsvga_fifo_read(s);
743             }
744             printf("%s: Unknown command 0x%02x in SVGA command FIFO\n",
745                    __func__, cmd);
746             break;
747 
748         rewind:
749             s->cmd->stop = cmd_start;
750             break;
751         }
752     }
753 
754     s->syncing = 0;
755 }
756 
757 static uint32_t vmsvga_index_read(void *opaque, uint32_t address)
758 {
759     struct vmsvga_state_s *s = opaque;
760 
761     return s->index;
762 }
763 
764 static void vmsvga_index_write(void *opaque, uint32_t address, uint32_t index)
765 {
766     struct vmsvga_state_s *s = opaque;
767 
768     s->index = index;
769 }
770 
771 static uint32_t vmsvga_value_read(void *opaque, uint32_t address)
772 {
773     uint32_t caps;
774     struct vmsvga_state_s *s = opaque;
775     DisplaySurface *surface = qemu_console_surface(s->vga.con);
776     PixelFormat pf;
777     uint32_t ret;
778 
779     switch (s->index) {
780     case SVGA_REG_ID:
781         ret = s->svgaid;
782         break;
783 
784     case SVGA_REG_ENABLE:
785         ret = s->enable;
786         break;
787 
788     case SVGA_REG_WIDTH:
789         ret = s->new_width ? s->new_width : surface_width(surface);
790         break;
791 
792     case SVGA_REG_HEIGHT:
793         ret = s->new_height ? s->new_height : surface_height(surface);
794         break;
795 
796     case SVGA_REG_MAX_WIDTH:
797         ret = SVGA_MAX_WIDTH;
798         break;
799 
800     case SVGA_REG_MAX_HEIGHT:
801         ret = SVGA_MAX_HEIGHT;
802         break;
803 
804     case SVGA_REG_DEPTH:
805         ret = (s->new_depth == 32) ? 24 : s->new_depth;
806         break;
807 
808     case SVGA_REG_BITS_PER_PIXEL:
809     case SVGA_REG_HOST_BITS_PER_PIXEL:
810         ret = s->new_depth;
811         break;
812 
813     case SVGA_REG_PSEUDOCOLOR:
814         ret = 0x0;
815         break;
816 
817     case SVGA_REG_RED_MASK:
818         pf = qemu_default_pixelformat(s->new_depth);
819         ret = pf.rmask;
820         break;
821 
822     case SVGA_REG_GREEN_MASK:
823         pf = qemu_default_pixelformat(s->new_depth);
824         ret = pf.gmask;
825         break;
826 
827     case SVGA_REG_BLUE_MASK:
828         pf = qemu_default_pixelformat(s->new_depth);
829         ret = pf.bmask;
830         break;
831 
832     case SVGA_REG_BYTES_PER_LINE:
833         if (s->new_width) {
834             ret = (s->new_depth * s->new_width) / 8;
835         } else {
836             ret = surface_stride(surface);
837         }
838         break;
839 
840     case SVGA_REG_FB_START: {
841         struct pci_vmsvga_state_s *pci_vmsvga
842             = container_of(s, struct pci_vmsvga_state_s, chip);
843         ret = pci_get_bar_addr(PCI_DEVICE(pci_vmsvga), 1);
844         break;
845     }
846 
847     case SVGA_REG_FB_OFFSET:
848         ret = 0x0;
849         break;
850 
851     case SVGA_REG_VRAM_SIZE:
852         ret = s->vga.vram_size; /* No physical VRAM besides the framebuffer */
853         break;
854 
855     case SVGA_REG_FB_SIZE:
856         ret = s->vga.vram_size;
857         break;
858 
859     case SVGA_REG_CAPABILITIES:
860         caps = SVGA_CAP_NONE;
861 #ifdef HW_RECT_ACCEL
862         caps |= SVGA_CAP_RECT_COPY;
863 #endif
864 #ifdef HW_FILL_ACCEL
865         caps |= SVGA_CAP_RECT_FILL;
866 #endif
867 #ifdef HW_MOUSE_ACCEL
868         if (dpy_cursor_define_supported(s->vga.con)) {
869             caps |= SVGA_CAP_CURSOR | SVGA_CAP_CURSOR_BYPASS_2 |
870                     SVGA_CAP_CURSOR_BYPASS;
871         }
872 #endif
873         ret = caps;
874         break;
875 
876     case SVGA_REG_MEM_START: {
877         struct pci_vmsvga_state_s *pci_vmsvga
878             = container_of(s, struct pci_vmsvga_state_s, chip);
879         ret = pci_get_bar_addr(PCI_DEVICE(pci_vmsvga), 2);
880         break;
881     }
882 
883     case SVGA_REG_MEM_SIZE:
884         ret = s->fifo_size;
885         break;
886 
887     case SVGA_REG_CONFIG_DONE:
888         ret = s->config;
889         break;
890 
891     case SVGA_REG_SYNC:
892     case SVGA_REG_BUSY:
893         ret = s->syncing;
894         break;
895 
896     case SVGA_REG_GUEST_ID:
897         ret = s->guest;
898         break;
899 
900     case SVGA_REG_CURSOR_ID:
901         ret = s->cursor.id;
902         break;
903 
904     case SVGA_REG_CURSOR_X:
905         ret = s->cursor.x;
906         break;
907 
908     case SVGA_REG_CURSOR_Y:
909         ret = s->cursor.y;
910         break;
911 
912     case SVGA_REG_CURSOR_ON:
913         ret = s->cursor.on;
914         break;
915 
916     case SVGA_REG_SCRATCH_SIZE:
917         ret = s->scratch_size;
918         break;
919 
920     case SVGA_REG_MEM_REGS:
921     case SVGA_REG_NUM_DISPLAYS:
922     case SVGA_REG_PITCHLOCK:
923     case SVGA_PALETTE_BASE ... SVGA_PALETTE_END:
924         ret = 0;
925         break;
926 
927     default:
928         if (s->index >= SVGA_SCRATCH_BASE &&
929             s->index < SVGA_SCRATCH_BASE + s->scratch_size) {
930             ret = s->scratch[s->index - SVGA_SCRATCH_BASE];
931             break;
932         }
933         printf("%s: Bad register %02x\n", __func__, s->index);
934         ret = 0;
935         break;
936     }
937 
938     if (s->index >= SVGA_SCRATCH_BASE) {
939         trace_vmware_scratch_read(s->index, ret);
940     } else if (s->index >= SVGA_PALETTE_BASE) {
941         trace_vmware_palette_read(s->index, ret);
942     } else {
943         trace_vmware_value_read(s->index, ret);
944     }
945     return ret;
946 }
947 
948 static void vmsvga_value_write(void *opaque, uint32_t address, uint32_t value)
949 {
950     struct vmsvga_state_s *s = opaque;
951 
952     if (s->index >= SVGA_SCRATCH_BASE) {
953         trace_vmware_scratch_write(s->index, value);
954     } else if (s->index >= SVGA_PALETTE_BASE) {
955         trace_vmware_palette_write(s->index, value);
956     } else {
957         trace_vmware_value_write(s->index, value);
958     }
959     switch (s->index) {
960     case SVGA_REG_ID:
961         if (value == SVGA_ID_2 || value == SVGA_ID_1 || value == SVGA_ID_0) {
962             s->svgaid = value;
963         }
964         break;
965 
966     case SVGA_REG_ENABLE:
967         s->enable = !!value;
968         s->invalidated = 1;
969         s->vga.hw_ops->invalidate(&s->vga);
970         if (s->enable && s->config) {
971             vga_dirty_log_stop(&s->vga);
972         } else {
973             vga_dirty_log_start(&s->vga);
974         }
975         break;
976 
977     case SVGA_REG_WIDTH:
978         if (value <= SVGA_MAX_WIDTH) {
979             s->new_width = value;
980             s->invalidated = 1;
981         } else {
982             printf("%s: Bad width: %i\n", __func__, value);
983         }
984         break;
985 
986     case SVGA_REG_HEIGHT:
987         if (value <= SVGA_MAX_HEIGHT) {
988             s->new_height = value;
989             s->invalidated = 1;
990         } else {
991             printf("%s: Bad height: %i\n", __func__, value);
992         }
993         break;
994 
995     case SVGA_REG_BITS_PER_PIXEL:
996         if (value != 32) {
997             printf("%s: Bad bits per pixel: %i bits\n", __func__, value);
998             s->config = 0;
999             s->invalidated = 1;
1000         }
1001         break;
1002 
1003     case SVGA_REG_CONFIG_DONE:
1004         if (value) {
1005             s->fifo = (uint32_t *) s->fifo_ptr;
1006             /* Check range and alignment.  */
1007             if ((CMD(min) | CMD(max) | CMD(next_cmd) | CMD(stop)) & 3) {
1008                 break;
1009             }
1010             if (CMD(min) < (uint8_t *) s->cmd->fifo - (uint8_t *) s->fifo) {
1011                 break;
1012             }
1013             if (CMD(max) > SVGA_FIFO_SIZE) {
1014                 break;
1015             }
1016             if (CMD(max) < CMD(min) + 10 * 1024) {
1017                 break;
1018             }
1019             vga_dirty_log_stop(&s->vga);
1020         }
1021         s->config = !!value;
1022         break;
1023 
1024     case SVGA_REG_SYNC:
1025         s->syncing = 1;
1026         vmsvga_fifo_run(s); /* Or should we just wait for update_display? */
1027         break;
1028 
1029     case SVGA_REG_GUEST_ID:
1030         s->guest = value;
1031 #ifdef VERBOSE
1032         if (value >= GUEST_OS_BASE && value < GUEST_OS_BASE +
1033             ARRAY_SIZE(vmsvga_guest_id)) {
1034             printf("%s: guest runs %s.\n", __func__,
1035                    vmsvga_guest_id[value - GUEST_OS_BASE]);
1036         }
1037 #endif
1038         break;
1039 
1040     case SVGA_REG_CURSOR_ID:
1041         s->cursor.id = value;
1042         break;
1043 
1044     case SVGA_REG_CURSOR_X:
1045         s->cursor.x = value;
1046         break;
1047 
1048     case SVGA_REG_CURSOR_Y:
1049         s->cursor.y = value;
1050         break;
1051 
1052     case SVGA_REG_CURSOR_ON:
1053         s->cursor.on |= (value == SVGA_CURSOR_ON_SHOW);
1054         s->cursor.on &= (value != SVGA_CURSOR_ON_HIDE);
1055 #ifdef HW_MOUSE_ACCEL
1056         if (value <= SVGA_CURSOR_ON_SHOW) {
1057             dpy_mouse_set(s->vga.con, s->cursor.x, s->cursor.y, s->cursor.on);
1058         }
1059 #endif
1060         break;
1061 
1062     case SVGA_REG_DEPTH:
1063     case SVGA_REG_MEM_REGS:
1064     case SVGA_REG_NUM_DISPLAYS:
1065     case SVGA_REG_PITCHLOCK:
1066     case SVGA_PALETTE_BASE ... SVGA_PALETTE_END:
1067         break;
1068 
1069     default:
1070         if (s->index >= SVGA_SCRATCH_BASE &&
1071                 s->index < SVGA_SCRATCH_BASE + s->scratch_size) {
1072             s->scratch[s->index - SVGA_SCRATCH_BASE] = value;
1073             break;
1074         }
1075         printf("%s: Bad register %02x\n", __func__, s->index);
1076     }
1077 }
1078 
1079 static uint32_t vmsvga_bios_read(void *opaque, uint32_t address)
1080 {
1081     printf("%s: what are we supposed to return?\n", __func__);
1082     return 0xcafe;
1083 }
1084 
1085 static void vmsvga_bios_write(void *opaque, uint32_t address, uint32_t data)
1086 {
1087     printf("%s: what are we supposed to do with (%08x)?\n", __func__, data);
1088 }
1089 
1090 static inline void vmsvga_check_size(struct vmsvga_state_s *s)
1091 {
1092     DisplaySurface *surface = qemu_console_surface(s->vga.con);
1093 
1094     if (s->new_width != surface_width(surface) ||
1095         s->new_height != surface_height(surface) ||
1096         s->new_depth != surface_bits_per_pixel(surface)) {
1097         int stride = (s->new_depth * s->new_width) / 8;
1098         pixman_format_code_t format =
1099             qemu_default_pixman_format(s->new_depth, true);
1100         trace_vmware_setmode(s->new_width, s->new_height, s->new_depth);
1101         surface = qemu_create_displaysurface_from(s->new_width, s->new_height,
1102                                                   format, stride,
1103                                                   s->vga.vram_ptr);
1104         dpy_gfx_replace_surface(s->vga.con, surface);
1105         s->invalidated = 1;
1106     }
1107 }
1108 
1109 static void vmsvga_update_display(void *opaque)
1110 {
1111     struct vmsvga_state_s *s = opaque;
1112     DisplaySurface *surface;
1113     bool dirty = false;
1114 
1115     if (!s->enable) {
1116         s->vga.hw_ops->gfx_update(&s->vga);
1117         return;
1118     }
1119 
1120     vmsvga_check_size(s);
1121     surface = qemu_console_surface(s->vga.con);
1122 
1123     vmsvga_fifo_run(s);
1124     vmsvga_update_rect_flush(s);
1125 
1126     /*
1127      * Is it more efficient to look at vram VGA-dirty bits or wait
1128      * for the driver to issue SVGA_CMD_UPDATE?
1129      */
1130     if (memory_region_is_logging(&s->vga.vram, DIRTY_MEMORY_VGA)) {
1131         vga_sync_dirty_bitmap(&s->vga);
1132         dirty = memory_region_get_dirty(&s->vga.vram, 0,
1133             surface_stride(surface) * surface_height(surface),
1134             DIRTY_MEMORY_VGA);
1135     }
1136     if (s->invalidated || dirty) {
1137         s->invalidated = 0;
1138         dpy_gfx_update(s->vga.con, 0, 0,
1139                    surface_width(surface), surface_height(surface));
1140     }
1141     if (dirty) {
1142         memory_region_reset_dirty(&s->vga.vram, 0,
1143             surface_stride(surface) * surface_height(surface),
1144             DIRTY_MEMORY_VGA);
1145     }
1146 }
1147 
1148 static void vmsvga_reset(DeviceState *dev)
1149 {
1150     struct pci_vmsvga_state_s *pci = VMWARE_SVGA(dev);
1151     struct vmsvga_state_s *s = &pci->chip;
1152 
1153     s->index = 0;
1154     s->enable = 0;
1155     s->config = 0;
1156     s->svgaid = SVGA_ID;
1157     s->cursor.on = 0;
1158     s->redraw_fifo_first = 0;
1159     s->redraw_fifo_last = 0;
1160     s->syncing = 0;
1161 
1162     vga_dirty_log_start(&s->vga);
1163 }
1164 
1165 static void vmsvga_invalidate_display(void *opaque)
1166 {
1167     struct vmsvga_state_s *s = opaque;
1168     if (!s->enable) {
1169         s->vga.hw_ops->invalidate(&s->vga);
1170         return;
1171     }
1172 
1173     s->invalidated = 1;
1174 }
1175 
1176 static void vmsvga_text_update(void *opaque, console_ch_t *chardata)
1177 {
1178     struct vmsvga_state_s *s = opaque;
1179 
1180     if (s->vga.hw_ops->text_update) {
1181         s->vga.hw_ops->text_update(&s->vga, chardata);
1182     }
1183 }
1184 
1185 static int vmsvga_post_load(void *opaque, int version_id)
1186 {
1187     struct vmsvga_state_s *s = opaque;
1188 
1189     s->invalidated = 1;
1190     if (s->config) {
1191         s->fifo = (uint32_t *) s->fifo_ptr;
1192     }
1193     return 0;
1194 }
1195 
1196 static const VMStateDescription vmstate_vmware_vga_internal = {
1197     .name = "vmware_vga_internal",
1198     .version_id = 0,
1199     .minimum_version_id = 0,
1200     .post_load = vmsvga_post_load,
1201     .fields = (VMStateField[]) {
1202         VMSTATE_INT32_EQUAL(new_depth, struct vmsvga_state_s),
1203         VMSTATE_INT32(enable, struct vmsvga_state_s),
1204         VMSTATE_INT32(config, struct vmsvga_state_s),
1205         VMSTATE_INT32(cursor.id, struct vmsvga_state_s),
1206         VMSTATE_INT32(cursor.x, struct vmsvga_state_s),
1207         VMSTATE_INT32(cursor.y, struct vmsvga_state_s),
1208         VMSTATE_INT32(cursor.on, struct vmsvga_state_s),
1209         VMSTATE_INT32(index, struct vmsvga_state_s),
1210         VMSTATE_VARRAY_INT32(scratch, struct vmsvga_state_s,
1211                              scratch_size, 0, vmstate_info_uint32, uint32_t),
1212         VMSTATE_INT32(new_width, struct vmsvga_state_s),
1213         VMSTATE_INT32(new_height, struct vmsvga_state_s),
1214         VMSTATE_UINT32(guest, struct vmsvga_state_s),
1215         VMSTATE_UINT32(svgaid, struct vmsvga_state_s),
1216         VMSTATE_INT32(syncing, struct vmsvga_state_s),
1217         VMSTATE_UNUSED(4), /* was fb_size */
1218         VMSTATE_END_OF_LIST()
1219     }
1220 };
1221 
1222 static const VMStateDescription vmstate_vmware_vga = {
1223     .name = "vmware_vga",
1224     .version_id = 0,
1225     .minimum_version_id = 0,
1226     .fields = (VMStateField[]) {
1227         VMSTATE_PCI_DEVICE(parent_obj, struct pci_vmsvga_state_s),
1228         VMSTATE_STRUCT(chip, struct pci_vmsvga_state_s, 0,
1229                        vmstate_vmware_vga_internal, struct vmsvga_state_s),
1230         VMSTATE_END_OF_LIST()
1231     }
1232 };
1233 
1234 static const GraphicHwOps vmsvga_ops = {
1235     .invalidate  = vmsvga_invalidate_display,
1236     .gfx_update  = vmsvga_update_display,
1237     .text_update = vmsvga_text_update,
1238 };
1239 
1240 static void vmsvga_init(DeviceState *dev, struct vmsvga_state_s *s,
1241                         MemoryRegion *address_space, MemoryRegion *io)
1242 {
1243     s->scratch_size = SVGA_SCRATCH_SIZE;
1244     s->scratch = g_malloc(s->scratch_size * 4);
1245 
1246     s->vga.con = graphic_console_init(dev, 0, &vmsvga_ops, s);
1247 
1248     s->fifo_size = SVGA_FIFO_SIZE;
1249     memory_region_init_ram(&s->fifo_ram, NULL, "vmsvga.fifo", s->fifo_size,
1250                            &error_fatal);
1251     vmstate_register_ram_global(&s->fifo_ram);
1252     s->fifo_ptr = memory_region_get_ram_ptr(&s->fifo_ram);
1253 
1254     vga_common_init(&s->vga, OBJECT(dev), true);
1255     vga_init(&s->vga, OBJECT(dev), address_space, io, true);
1256     vmstate_register(NULL, 0, &vmstate_vga_common, &s->vga);
1257     s->new_depth = 32;
1258 }
1259 
1260 static uint64_t vmsvga_io_read(void *opaque, hwaddr addr, unsigned size)
1261 {
1262     struct vmsvga_state_s *s = opaque;
1263 
1264     switch (addr) {
1265     case SVGA_IO_MUL * SVGA_INDEX_PORT: return vmsvga_index_read(s, addr);
1266     case SVGA_IO_MUL * SVGA_VALUE_PORT: return vmsvga_value_read(s, addr);
1267     case SVGA_IO_MUL * SVGA_BIOS_PORT: return vmsvga_bios_read(s, addr);
1268     default: return -1u;
1269     }
1270 }
1271 
1272 static void vmsvga_io_write(void *opaque, hwaddr addr,
1273                             uint64_t data, unsigned size)
1274 {
1275     struct vmsvga_state_s *s = opaque;
1276 
1277     switch (addr) {
1278     case SVGA_IO_MUL * SVGA_INDEX_PORT:
1279         vmsvga_index_write(s, addr, data);
1280         break;
1281     case SVGA_IO_MUL * SVGA_VALUE_PORT:
1282         vmsvga_value_write(s, addr, data);
1283         break;
1284     case SVGA_IO_MUL * SVGA_BIOS_PORT:
1285         vmsvga_bios_write(s, addr, data);
1286         break;
1287     }
1288 }
1289 
1290 static const MemoryRegionOps vmsvga_io_ops = {
1291     .read = vmsvga_io_read,
1292     .write = vmsvga_io_write,
1293     .endianness = DEVICE_LITTLE_ENDIAN,
1294     .valid = {
1295         .min_access_size = 4,
1296         .max_access_size = 4,
1297         .unaligned = true,
1298     },
1299     .impl = {
1300         .unaligned = true,
1301     },
1302 };
1303 
1304 static void pci_vmsvga_realize(PCIDevice *dev, Error **errp)
1305 {
1306     struct pci_vmsvga_state_s *s = VMWARE_SVGA(dev);
1307 
1308     dev->config[PCI_CACHE_LINE_SIZE] = 0x08;
1309     dev->config[PCI_LATENCY_TIMER] = 0x40;
1310     dev->config[PCI_INTERRUPT_LINE] = 0xff;          /* End */
1311 
1312     memory_region_init_io(&s->io_bar, NULL, &vmsvga_io_ops, &s->chip,
1313                           "vmsvga-io", 0x10);
1314     memory_region_set_flush_coalesced(&s->io_bar);
1315     pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io_bar);
1316 
1317     vmsvga_init(DEVICE(dev), &s->chip,
1318                 pci_address_space(dev), pci_address_space_io(dev));
1319 
1320     pci_register_bar(dev, 1, PCI_BASE_ADDRESS_MEM_PREFETCH,
1321                      &s->chip.vga.vram);
1322     pci_register_bar(dev, 2, PCI_BASE_ADDRESS_MEM_PREFETCH,
1323                      &s->chip.fifo_ram);
1324 
1325     if (!dev->rom_bar) {
1326         /* compatibility with pc-0.13 and older */
1327         vga_init_vbe(&s->chip.vga, OBJECT(dev), pci_address_space(dev));
1328     }
1329 }
1330 
1331 static Property vga_vmware_properties[] = {
1332     DEFINE_PROP_UINT32("vgamem_mb", struct pci_vmsvga_state_s,
1333                        chip.vga.vram_size_mb, 16),
1334     DEFINE_PROP_END_OF_LIST(),
1335 };
1336 
1337 static void vmsvga_class_init(ObjectClass *klass, void *data)
1338 {
1339     DeviceClass *dc = DEVICE_CLASS(klass);
1340     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1341 
1342     k->realize = pci_vmsvga_realize;
1343     k->romfile = "vgabios-vmware.bin";
1344     k->vendor_id = PCI_VENDOR_ID_VMWARE;
1345     k->device_id = SVGA_PCI_DEVICE_ID;
1346     k->class_id = PCI_CLASS_DISPLAY_VGA;
1347     k->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE;
1348     k->subsystem_id = SVGA_PCI_DEVICE_ID;
1349     dc->reset = vmsvga_reset;
1350     dc->vmsd = &vmstate_vmware_vga;
1351     dc->props = vga_vmware_properties;
1352     dc->hotpluggable = false;
1353     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
1354 }
1355 
1356 static const TypeInfo vmsvga_info = {
1357     .name          = TYPE_VMWARE_SVGA,
1358     .parent        = TYPE_PCI_DEVICE,
1359     .instance_size = sizeof(struct pci_vmsvga_state_s),
1360     .class_init    = vmsvga_class_init,
1361 };
1362 
1363 static void vmsvga_register_types(void)
1364 {
1365     type_register_static(&vmsvga_info);
1366 }
1367 
1368 type_init(vmsvga_register_types)
1369