xref: /qemu/hw/display/vmware_vga.c (revision 7a4e543d)
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 "qemu/osdep.h"
25 #include "hw/hw.h"
26 #include "hw/loader.h"
27 #include "trace.h"
28 #include "ui/console.h"
29 #include "ui/vnc.h"
30 #include "hw/pci/pci.h"
31 
32 #undef VERBOSE
33 #define HW_RECT_ACCEL
34 #define HW_FILL_ACCEL
35 #define HW_MOUSE_ACCEL
36 
37 #include "vga_int.h"
38 
39 /* See http://vmware-svga.sf.net/ for some documentation on VMWare SVGA */
40 
41 struct vmsvga_state_s {
42     VGACommonState vga;
43 
44     int invalidated;
45     int enable;
46     int config;
47     struct {
48         int id;
49         int x;
50         int y;
51         int on;
52     } cursor;
53 
54     int index;
55     int scratch_size;
56     uint32_t *scratch;
57     int new_width;
58     int new_height;
59     int new_depth;
60     uint32_t guest;
61     uint32_t svgaid;
62     int syncing;
63 
64     MemoryRegion fifo_ram;
65     uint8_t *fifo_ptr;
66     unsigned int fifo_size;
67 
68     union {
69         uint32_t *fifo;
70         struct QEMU_PACKED {
71             uint32_t min;
72             uint32_t max;
73             uint32_t next_cmd;
74             uint32_t stop;
75             /* Add registers here when adding capabilities.  */
76             uint32_t fifo[0];
77         } *cmd;
78     };
79 
80 #define REDRAW_FIFO_LEN  512
81     struct vmsvga_rect_s {
82         int x, y, w, h;
83     } redraw_fifo[REDRAW_FIFO_LEN];
84     int redraw_fifo_first, redraw_fifo_last;
85 };
86 
87 #define TYPE_VMWARE_SVGA "vmware-svga"
88 
89 #define VMWARE_SVGA(obj) \
90     OBJECT_CHECK(struct pci_vmsvga_state_s, (obj), TYPE_VMWARE_SVGA)
91 
92 struct pci_vmsvga_state_s {
93     /*< private >*/
94     PCIDevice parent_obj;
95     /*< public >*/
96 
97     struct vmsvga_state_s chip;
98     MemoryRegion io_bar;
99 };
100 
101 #define SVGA_MAGIC              0x900000UL
102 #define SVGA_MAKE_ID(ver)       (SVGA_MAGIC << 8 | (ver))
103 #define SVGA_ID_0               SVGA_MAKE_ID(0)
104 #define SVGA_ID_1               SVGA_MAKE_ID(1)
105 #define SVGA_ID_2               SVGA_MAKE_ID(2)
106 
107 #define SVGA_LEGACY_BASE_PORT   0x4560
108 #define SVGA_INDEX_PORT         0x0
109 #define SVGA_VALUE_PORT         0x1
110 #define SVGA_BIOS_PORT          0x2
111 
112 #define SVGA_VERSION_2
113 
114 #ifdef SVGA_VERSION_2
115 # define SVGA_ID                SVGA_ID_2
116 # define SVGA_IO_BASE           SVGA_LEGACY_BASE_PORT
117 # define SVGA_IO_MUL            1
118 # define SVGA_FIFO_SIZE         0x10000
119 # define SVGA_PCI_DEVICE_ID     PCI_DEVICE_ID_VMWARE_SVGA2
120 #else
121 # define SVGA_ID                SVGA_ID_1
122 # define SVGA_IO_BASE           SVGA_LEGACY_BASE_PORT
123 # define SVGA_IO_MUL            4
124 # define SVGA_FIFO_SIZE         0x10000
125 # define SVGA_PCI_DEVICE_ID     PCI_DEVICE_ID_VMWARE_SVGA
126 #endif
127 
128 enum {
129     /* ID 0, 1 and 2 registers */
130     SVGA_REG_ID = 0,
131     SVGA_REG_ENABLE = 1,
132     SVGA_REG_WIDTH = 2,
133     SVGA_REG_HEIGHT = 3,
134     SVGA_REG_MAX_WIDTH = 4,
135     SVGA_REG_MAX_HEIGHT = 5,
136     SVGA_REG_DEPTH = 6,
137     SVGA_REG_BITS_PER_PIXEL = 7,        /* Current bpp in the guest */
138     SVGA_REG_PSEUDOCOLOR = 8,
139     SVGA_REG_RED_MASK = 9,
140     SVGA_REG_GREEN_MASK = 10,
141     SVGA_REG_BLUE_MASK = 11,
142     SVGA_REG_BYTES_PER_LINE = 12,
143     SVGA_REG_FB_START = 13,
144     SVGA_REG_FB_OFFSET = 14,
145     SVGA_REG_VRAM_SIZE = 15,
146     SVGA_REG_FB_SIZE = 16,
147 
148     /* ID 1 and 2 registers */
149     SVGA_REG_CAPABILITIES = 17,
150     SVGA_REG_MEM_START = 18,            /* Memory for command FIFO */
151     SVGA_REG_MEM_SIZE = 19,
152     SVGA_REG_CONFIG_DONE = 20,          /* Set when memory area configured */
153     SVGA_REG_SYNC = 21,                 /* Write to force synchronization */
154     SVGA_REG_BUSY = 22,                 /* Read to check if sync is done */
155     SVGA_REG_GUEST_ID = 23,             /* Set guest OS identifier */
156     SVGA_REG_CURSOR_ID = 24,            /* ID of cursor */
157     SVGA_REG_CURSOR_X = 25,             /* Set cursor X position */
158     SVGA_REG_CURSOR_Y = 26,             /* Set cursor Y position */
159     SVGA_REG_CURSOR_ON = 27,            /* Turn cursor on/off */
160     SVGA_REG_HOST_BITS_PER_PIXEL = 28,  /* Current bpp in the host */
161     SVGA_REG_SCRATCH_SIZE = 29,         /* Number of scratch registers */
162     SVGA_REG_MEM_REGS = 30,             /* Number of FIFO registers */
163     SVGA_REG_NUM_DISPLAYS = 31,         /* Number of guest displays */
164     SVGA_REG_PITCHLOCK = 32,            /* Fixed pitch for all modes */
165 
166     SVGA_PALETTE_BASE = 1024,           /* Base of SVGA color map */
167     SVGA_PALETTE_END  = SVGA_PALETTE_BASE + 767,
168     SVGA_SCRATCH_BASE = SVGA_PALETTE_BASE + 768,
169 };
170 
171 #define SVGA_CAP_NONE                   0
172 #define SVGA_CAP_RECT_FILL              (1 << 0)
173 #define SVGA_CAP_RECT_COPY              (1 << 1)
174 #define SVGA_CAP_RECT_PAT_FILL          (1 << 2)
175 #define SVGA_CAP_LEGACY_OFFSCREEN       (1 << 3)
176 #define SVGA_CAP_RASTER_OP              (1 << 4)
177 #define SVGA_CAP_CURSOR                 (1 << 5)
178 #define SVGA_CAP_CURSOR_BYPASS          (1 << 6)
179 #define SVGA_CAP_CURSOR_BYPASS_2        (1 << 7)
180 #define SVGA_CAP_8BIT_EMULATION         (1 << 8)
181 #define SVGA_CAP_ALPHA_CURSOR           (1 << 9)
182 #define SVGA_CAP_GLYPH                  (1 << 10)
183 #define SVGA_CAP_GLYPH_CLIPPING         (1 << 11)
184 #define SVGA_CAP_OFFSCREEN_1            (1 << 12)
185 #define SVGA_CAP_ALPHA_BLEND            (1 << 13)
186 #define SVGA_CAP_3D                     (1 << 14)
187 #define SVGA_CAP_EXTENDED_FIFO          (1 << 15)
188 #define SVGA_CAP_MULTIMON               (1 << 16)
189 #define SVGA_CAP_PITCHLOCK              (1 << 17)
190 
191 /*
192  * FIFO offsets (seen as an array of 32-bit words)
193  */
194 enum {
195     /*
196      * The original defined FIFO offsets
197      */
198     SVGA_FIFO_MIN = 0,
199     SVGA_FIFO_MAX,      /* The distance from MIN to MAX must be at least 10K */
200     SVGA_FIFO_NEXT_CMD,
201     SVGA_FIFO_STOP,
202 
203     /*
204      * Additional offsets added as of SVGA_CAP_EXTENDED_FIFO
205      */
206     SVGA_FIFO_CAPABILITIES = 4,
207     SVGA_FIFO_FLAGS,
208     SVGA_FIFO_FENCE,
209     SVGA_FIFO_3D_HWVERSION,
210     SVGA_FIFO_PITCHLOCK,
211 };
212 
213 #define SVGA_FIFO_CAP_NONE              0
214 #define SVGA_FIFO_CAP_FENCE             (1 << 0)
215 #define SVGA_FIFO_CAP_ACCELFRONT        (1 << 1)
216 #define SVGA_FIFO_CAP_PITCHLOCK         (1 << 2)
217 
218 #define SVGA_FIFO_FLAG_NONE             0
219 #define SVGA_FIFO_FLAG_ACCELFRONT       (1 << 0)
220 
221 /* These values can probably be changed arbitrarily.  */
222 #define SVGA_SCRATCH_SIZE               0x8000
223 #define SVGA_MAX_WIDTH                  ROUND_UP(2360, VNC_DIRTY_PIXELS_PER_BIT)
224 #define SVGA_MAX_HEIGHT                 1770
225 
226 #ifdef VERBOSE
227 # define GUEST_OS_BASE          0x5001
228 static const char *vmsvga_guest_id[] = {
229     [0x00] = "Dos",
230     [0x01] = "Windows 3.1",
231     [0x02] = "Windows 95",
232     [0x03] = "Windows 98",
233     [0x04] = "Windows ME",
234     [0x05] = "Windows NT",
235     [0x06] = "Windows 2000",
236     [0x07] = "Linux",
237     [0x08] = "OS/2",
238     [0x09] = "an unknown OS",
239     [0x0a] = "BSD",
240     [0x0b] = "Whistler",
241     [0x0c] = "an unknown OS",
242     [0x0d] = "an unknown OS",
243     [0x0e] = "an unknown OS",
244     [0x0f] = "an unknown OS",
245     [0x10] = "an unknown OS",
246     [0x11] = "an unknown OS",
247     [0x12] = "an unknown OS",
248     [0x13] = "an unknown OS",
249     [0x14] = "an unknown OS",
250     [0x15] = "Windows 2003",
251 };
252 #endif
253 
254 enum {
255     SVGA_CMD_INVALID_CMD = 0,
256     SVGA_CMD_UPDATE = 1,
257     SVGA_CMD_RECT_FILL = 2,
258     SVGA_CMD_RECT_COPY = 3,
259     SVGA_CMD_DEFINE_BITMAP = 4,
260     SVGA_CMD_DEFINE_BITMAP_SCANLINE = 5,
261     SVGA_CMD_DEFINE_PIXMAP = 6,
262     SVGA_CMD_DEFINE_PIXMAP_SCANLINE = 7,
263     SVGA_CMD_RECT_BITMAP_FILL = 8,
264     SVGA_CMD_RECT_PIXMAP_FILL = 9,
265     SVGA_CMD_RECT_BITMAP_COPY = 10,
266     SVGA_CMD_RECT_PIXMAP_COPY = 11,
267     SVGA_CMD_FREE_OBJECT = 12,
268     SVGA_CMD_RECT_ROP_FILL = 13,
269     SVGA_CMD_RECT_ROP_COPY = 14,
270     SVGA_CMD_RECT_ROP_BITMAP_FILL = 15,
271     SVGA_CMD_RECT_ROP_PIXMAP_FILL = 16,
272     SVGA_CMD_RECT_ROP_BITMAP_COPY = 17,
273     SVGA_CMD_RECT_ROP_PIXMAP_COPY = 18,
274     SVGA_CMD_DEFINE_CURSOR = 19,
275     SVGA_CMD_DISPLAY_CURSOR = 20,
276     SVGA_CMD_MOVE_CURSOR = 21,
277     SVGA_CMD_DEFINE_ALPHA_CURSOR = 22,
278     SVGA_CMD_DRAW_GLYPH = 23,
279     SVGA_CMD_DRAW_GLYPH_CLIPPED = 24,
280     SVGA_CMD_UPDATE_VERBOSE = 25,
281     SVGA_CMD_SURFACE_FILL = 26,
282     SVGA_CMD_SURFACE_COPY = 27,
283     SVGA_CMD_SURFACE_ALPHA_BLEND = 28,
284     SVGA_CMD_FRONT_ROP_FILL = 29,
285     SVGA_CMD_FENCE = 30,
286 };
287 
288 /* Legal values for the SVGA_REG_CURSOR_ON register in cursor bypass mode */
289 enum {
290     SVGA_CURSOR_ON_HIDE = 0,
291     SVGA_CURSOR_ON_SHOW = 1,
292     SVGA_CURSOR_ON_REMOVE_FROM_FB = 2,
293     SVGA_CURSOR_ON_RESTORE_TO_FB = 3,
294 };
295 
296 static inline bool vmsvga_verify_rect(DisplaySurface *surface,
297                                       const char *name,
298                                       int x, int y, int w, int h)
299 {
300     if (x < 0) {
301         fprintf(stderr, "%s: x was < 0 (%d)\n", name, x);
302         return false;
303     }
304     if (x > SVGA_MAX_WIDTH) {
305         fprintf(stderr, "%s: x was > %d (%d)\n", name, SVGA_MAX_WIDTH, x);
306         return false;
307     }
308     if (w < 0) {
309         fprintf(stderr, "%s: w was < 0 (%d)\n", name, w);
310         return false;
311     }
312     if (w > SVGA_MAX_WIDTH) {
313         fprintf(stderr, "%s: w was > %d (%d)\n", name, SVGA_MAX_WIDTH, w);
314         return false;
315     }
316     if (x + w > surface_width(surface)) {
317         fprintf(stderr, "%s: width was > %d (x: %d, w: %d)\n",
318                 name, surface_width(surface), x, w);
319         return false;
320     }
321 
322     if (y < 0) {
323         fprintf(stderr, "%s: y was < 0 (%d)\n", name, y);
324         return false;
325     }
326     if (y > SVGA_MAX_HEIGHT) {
327         fprintf(stderr, "%s: y was > %d (%d)\n", name, SVGA_MAX_HEIGHT, y);
328         return false;
329     }
330     if (h < 0) {
331         fprintf(stderr, "%s: h was < 0 (%d)\n", name, h);
332         return false;
333     }
334     if (h > SVGA_MAX_HEIGHT) {
335         fprintf(stderr, "%s: h was > %d (%d)\n", name, SVGA_MAX_HEIGHT, h);
336         return false;
337     }
338     if (y + h > surface_height(surface)) {
339         fprintf(stderr, "%s: update height > %d (y: %d, h: %d)\n",
340                 name, surface_height(surface), y, h);
341         return false;
342     }
343 
344     return true;
345 }
346 
347 static inline void vmsvga_update_rect(struct vmsvga_state_s *s,
348                                       int x, int y, int w, int h)
349 {
350     DisplaySurface *surface = qemu_console_surface(s->vga.con);
351     int line;
352     int bypl;
353     int width;
354     int start;
355     uint8_t *src;
356     uint8_t *dst;
357 
358     if (!vmsvga_verify_rect(surface, __func__, x, y, w, h)) {
359         /* go for a fullscreen update as fallback */
360         x = 0;
361         y = 0;
362         w = surface_width(surface);
363         h = surface_height(surface);
364     }
365 
366     bypl = surface_stride(surface);
367     width = surface_bytes_per_pixel(surface) * w;
368     start = surface_bytes_per_pixel(surface) * x + bypl * y;
369     src = s->vga.vram_ptr + start;
370     dst = surface_data(surface) + start;
371 
372     for (line = h; line > 0; line--, src += bypl, dst += bypl) {
373         memcpy(dst, src, width);
374     }
375     dpy_gfx_update(s->vga.con, x, y, w, h);
376 }
377 
378 static inline void vmsvga_update_rect_delayed(struct vmsvga_state_s *s,
379                 int x, int y, int w, int h)
380 {
381     struct vmsvga_rect_s *rect = &s->redraw_fifo[s->redraw_fifo_last++];
382 
383     s->redraw_fifo_last &= REDRAW_FIFO_LEN - 1;
384     rect->x = x;
385     rect->y = y;
386     rect->w = w;
387     rect->h = h;
388 }
389 
390 static inline void vmsvga_update_rect_flush(struct vmsvga_state_s *s)
391 {
392     struct vmsvga_rect_s *rect;
393 
394     if (s->invalidated) {
395         s->redraw_fifo_first = s->redraw_fifo_last;
396         return;
397     }
398     /* Overlapping region updates can be optimised out here - if someone
399      * knows a smart algorithm to do that, please share.  */
400     while (s->redraw_fifo_first != s->redraw_fifo_last) {
401         rect = &s->redraw_fifo[s->redraw_fifo_first++];
402         s->redraw_fifo_first &= REDRAW_FIFO_LEN - 1;
403         vmsvga_update_rect(s, rect->x, rect->y, rect->w, rect->h);
404     }
405 }
406 
407 #ifdef HW_RECT_ACCEL
408 static inline int vmsvga_copy_rect(struct vmsvga_state_s *s,
409                 int x0, int y0, int x1, int y1, int w, int h)
410 {
411     DisplaySurface *surface = qemu_console_surface(s->vga.con);
412     uint8_t *vram = s->vga.vram_ptr;
413     int bypl = surface_stride(surface);
414     int bypp = surface_bytes_per_pixel(surface);
415     int width = bypp * w;
416     int line = h;
417     uint8_t *ptr[2];
418 
419     if (!vmsvga_verify_rect(surface, "vmsvga_copy_rect/src", x0, y0, w, h)) {
420         return -1;
421     }
422     if (!vmsvga_verify_rect(surface, "vmsvga_copy_rect/dst", x1, y1, w, h)) {
423         return -1;
424     }
425 
426     if (y1 > y0) {
427         ptr[0] = vram + bypp * x0 + bypl * (y0 + h - 1);
428         ptr[1] = vram + bypp * x1 + bypl * (y1 + h - 1);
429         for (; line > 0; line --, ptr[0] -= bypl, ptr[1] -= bypl) {
430             memmove(ptr[1], ptr[0], width);
431         }
432     } else {
433         ptr[0] = vram + bypp * x0 + bypl * y0;
434         ptr[1] = vram + bypp * x1 + bypl * y1;
435         for (; line > 0; line --, ptr[0] += bypl, ptr[1] += bypl) {
436             memmove(ptr[1], ptr[0], width);
437         }
438     }
439 
440     vmsvga_update_rect_delayed(s, x1, y1, w, h);
441     return 0;
442 }
443 #endif
444 
445 #ifdef HW_FILL_ACCEL
446 static inline int vmsvga_fill_rect(struct vmsvga_state_s *s,
447                 uint32_t c, int x, int y, int w, int h)
448 {
449     DisplaySurface *surface = qemu_console_surface(s->vga.con);
450     int bypl = surface_stride(surface);
451     int width = surface_bytes_per_pixel(surface) * w;
452     int line = h;
453     int column;
454     uint8_t *fst;
455     uint8_t *dst;
456     uint8_t *src;
457     uint8_t col[4];
458 
459     if (!vmsvga_verify_rect(surface, __func__, x, y, w, h)) {
460         return -1;
461     }
462 
463     col[0] = c;
464     col[1] = c >> 8;
465     col[2] = c >> 16;
466     col[3] = c >> 24;
467 
468     fst = s->vga.vram_ptr + surface_bytes_per_pixel(surface) * x + bypl * y;
469 
470     if (line--) {
471         dst = fst;
472         src = col;
473         for (column = width; column > 0; column--) {
474             *(dst++) = *(src++);
475             if (src - col == surface_bytes_per_pixel(surface)) {
476                 src = col;
477             }
478         }
479         dst = fst;
480         for (; line > 0; line--) {
481             dst += bypl;
482             memcpy(dst, fst, width);
483         }
484     }
485 
486     vmsvga_update_rect_delayed(s, x, y, w, h);
487     return 0;
488 }
489 #endif
490 
491 struct vmsvga_cursor_definition_s {
492     uint32_t width;
493     uint32_t height;
494     int id;
495     uint32_t bpp;
496     int hot_x;
497     int hot_y;
498     uint32_t mask[1024];
499     uint32_t image[4096];
500 };
501 
502 #define SVGA_BITMAP_SIZE(w, h)          ((((w) + 31) >> 5) * (h))
503 #define SVGA_PIXMAP_SIZE(w, h, bpp)     (((((w) * (bpp)) + 31) >> 5) * (h))
504 
505 #ifdef HW_MOUSE_ACCEL
506 static inline void vmsvga_cursor_define(struct vmsvga_state_s *s,
507                 struct vmsvga_cursor_definition_s *c)
508 {
509     QEMUCursor *qc;
510     int i, pixels;
511 
512     qc = cursor_alloc(c->width, c->height);
513     qc->hot_x = c->hot_x;
514     qc->hot_y = c->hot_y;
515     switch (c->bpp) {
516     case 1:
517         cursor_set_mono(qc, 0xffffff, 0x000000, (void *)c->image,
518                         1, (void *)c->mask);
519 #ifdef DEBUG
520         cursor_print_ascii_art(qc, "vmware/mono");
521 #endif
522         break;
523     case 32:
524         /* fill alpha channel from mask, set color to zero */
525         cursor_set_mono(qc, 0x000000, 0x000000, (void *)c->mask,
526                         1, (void *)c->mask);
527         /* add in rgb values */
528         pixels = c->width * c->height;
529         for (i = 0; i < pixels; i++) {
530             qc->data[i] |= c->image[i] & 0xffffff;
531         }
532 #ifdef DEBUG
533         cursor_print_ascii_art(qc, "vmware/32bit");
534 #endif
535         break;
536     default:
537         fprintf(stderr, "%s: unhandled bpp %d, using fallback cursor\n",
538                 __func__, c->bpp);
539         cursor_put(qc);
540         qc = cursor_builtin_left_ptr();
541     }
542 
543     dpy_cursor_define(s->vga.con, qc);
544     cursor_put(qc);
545 }
546 #endif
547 
548 #define CMD(f)  le32_to_cpu(s->cmd->f)
549 
550 static inline int vmsvga_fifo_length(struct vmsvga_state_s *s)
551 {
552     int num;
553 
554     if (!s->config || !s->enable) {
555         return 0;
556     }
557     num = CMD(next_cmd) - CMD(stop);
558     if (num < 0) {
559         num += CMD(max) - CMD(min);
560     }
561     return num >> 2;
562 }
563 
564 static inline uint32_t vmsvga_fifo_read_raw(struct vmsvga_state_s *s)
565 {
566     uint32_t cmd = s->fifo[CMD(stop) >> 2];
567 
568     s->cmd->stop = cpu_to_le32(CMD(stop) + 4);
569     if (CMD(stop) >= CMD(max)) {
570         s->cmd->stop = s->cmd->min;
571     }
572     return cmd;
573 }
574 
575 static inline uint32_t vmsvga_fifo_read(struct vmsvga_state_s *s)
576 {
577     return le32_to_cpu(vmsvga_fifo_read_raw(s));
578 }
579 
580 static void vmsvga_fifo_run(struct vmsvga_state_s *s)
581 {
582     uint32_t cmd, colour;
583     int args, len;
584     int x, y, dx, dy, width, height;
585     struct vmsvga_cursor_definition_s cursor;
586     uint32_t cmd_start;
587 
588     len = vmsvga_fifo_length(s);
589     while (len > 0) {
590         /* May need to go back to the start of the command if incomplete */
591         cmd_start = s->cmd->stop;
592 
593         switch (cmd = vmsvga_fifo_read(s)) {
594         case SVGA_CMD_UPDATE:
595         case SVGA_CMD_UPDATE_VERBOSE:
596             len -= 5;
597             if (len < 0) {
598                 goto rewind;
599             }
600 
601             x = vmsvga_fifo_read(s);
602             y = vmsvga_fifo_read(s);
603             width = vmsvga_fifo_read(s);
604             height = vmsvga_fifo_read(s);
605             vmsvga_update_rect_delayed(s, x, y, width, height);
606             break;
607 
608         case SVGA_CMD_RECT_FILL:
609             len -= 6;
610             if (len < 0) {
611                 goto rewind;
612             }
613 
614             colour = vmsvga_fifo_read(s);
615             x = vmsvga_fifo_read(s);
616             y = vmsvga_fifo_read(s);
617             width = vmsvga_fifo_read(s);
618             height = vmsvga_fifo_read(s);
619 #ifdef HW_FILL_ACCEL
620             if (vmsvga_fill_rect(s, colour, x, y, width, height) == 0) {
621                 break;
622             }
623 #endif
624             args = 0;
625             goto badcmd;
626 
627         case SVGA_CMD_RECT_COPY:
628             len -= 7;
629             if (len < 0) {
630                 goto rewind;
631             }
632 
633             x = vmsvga_fifo_read(s);
634             y = vmsvga_fifo_read(s);
635             dx = vmsvga_fifo_read(s);
636             dy = vmsvga_fifo_read(s);
637             width = vmsvga_fifo_read(s);
638             height = vmsvga_fifo_read(s);
639 #ifdef HW_RECT_ACCEL
640             if (vmsvga_copy_rect(s, x, y, dx, dy, width, height) == 0) {
641                 break;
642             }
643 #endif
644             args = 0;
645             goto badcmd;
646 
647         case SVGA_CMD_DEFINE_CURSOR:
648             len -= 8;
649             if (len < 0) {
650                 goto rewind;
651             }
652 
653             cursor.id = vmsvga_fifo_read(s);
654             cursor.hot_x = vmsvga_fifo_read(s);
655             cursor.hot_y = vmsvga_fifo_read(s);
656             cursor.width = x = vmsvga_fifo_read(s);
657             cursor.height = y = vmsvga_fifo_read(s);
658             vmsvga_fifo_read(s);
659             cursor.bpp = vmsvga_fifo_read(s);
660 
661             args = SVGA_BITMAP_SIZE(x, y) + SVGA_PIXMAP_SIZE(x, y, cursor.bpp);
662             if (cursor.width > 256 ||
663                 cursor.height > 256 ||
664                 cursor.bpp > 32 ||
665                 SVGA_BITMAP_SIZE(x, y) > sizeof cursor.mask ||
666                 SVGA_PIXMAP_SIZE(x, y, cursor.bpp) > sizeof cursor.image) {
667                     goto badcmd;
668             }
669 
670             len -= args;
671             if (len < 0) {
672                 goto rewind;
673             }
674 
675             for (args = 0; args < SVGA_BITMAP_SIZE(x, y); args++) {
676                 cursor.mask[args] = vmsvga_fifo_read_raw(s);
677             }
678             for (args = 0; args < SVGA_PIXMAP_SIZE(x, y, cursor.bpp); args++) {
679                 cursor.image[args] = vmsvga_fifo_read_raw(s);
680             }
681 #ifdef HW_MOUSE_ACCEL
682             vmsvga_cursor_define(s, &cursor);
683             break;
684 #else
685             args = 0;
686             goto badcmd;
687 #endif
688 
689         /*
690          * Other commands that we at least know the number of arguments
691          * for so we can avoid FIFO desync if driver uses them illegally.
692          */
693         case SVGA_CMD_DEFINE_ALPHA_CURSOR:
694             len -= 6;
695             if (len < 0) {
696                 goto rewind;
697             }
698             vmsvga_fifo_read(s);
699             vmsvga_fifo_read(s);
700             vmsvga_fifo_read(s);
701             x = vmsvga_fifo_read(s);
702             y = vmsvga_fifo_read(s);
703             args = x * y;
704             goto badcmd;
705         case SVGA_CMD_RECT_ROP_FILL:
706             args = 6;
707             goto badcmd;
708         case SVGA_CMD_RECT_ROP_COPY:
709             args = 7;
710             goto badcmd;
711         case SVGA_CMD_DRAW_GLYPH_CLIPPED:
712             len -= 4;
713             if (len < 0) {
714                 goto rewind;
715             }
716             vmsvga_fifo_read(s);
717             vmsvga_fifo_read(s);
718             args = 7 + (vmsvga_fifo_read(s) >> 2);
719             goto badcmd;
720         case SVGA_CMD_SURFACE_ALPHA_BLEND:
721             args = 12;
722             goto badcmd;
723 
724         /*
725          * Other commands that are not listed as depending on any
726          * CAPABILITIES bits, but are not described in the README either.
727          */
728         case SVGA_CMD_SURFACE_FILL:
729         case SVGA_CMD_SURFACE_COPY:
730         case SVGA_CMD_FRONT_ROP_FILL:
731         case SVGA_CMD_FENCE:
732         case SVGA_CMD_INVALID_CMD:
733             break; /* Nop */
734 
735         default:
736             args = 0;
737         badcmd:
738             len -= args;
739             if (len < 0) {
740                 goto rewind;
741             }
742             while (args--) {
743                 vmsvga_fifo_read(s);
744             }
745             printf("%s: Unknown command 0x%02x in SVGA command FIFO\n",
746                    __func__, cmd);
747             break;
748 
749         rewind:
750             s->cmd->stop = cmd_start;
751             break;
752         }
753     }
754 
755     s->syncing = 0;
756 }
757 
758 static uint32_t vmsvga_index_read(void *opaque, uint32_t address)
759 {
760     struct vmsvga_state_s *s = opaque;
761 
762     return s->index;
763 }
764 
765 static void vmsvga_index_write(void *opaque, uint32_t address, uint32_t index)
766 {
767     struct vmsvga_state_s *s = opaque;
768 
769     s->index = index;
770 }
771 
772 static uint32_t vmsvga_value_read(void *opaque, uint32_t address)
773 {
774     uint32_t caps;
775     struct vmsvga_state_s *s = opaque;
776     DisplaySurface *surface = qemu_console_surface(s->vga.con);
777     PixelFormat pf;
778     uint32_t ret;
779 
780     switch (s->index) {
781     case SVGA_REG_ID:
782         ret = s->svgaid;
783         break;
784 
785     case SVGA_REG_ENABLE:
786         ret = s->enable;
787         break;
788 
789     case SVGA_REG_WIDTH:
790         ret = s->new_width ? s->new_width : surface_width(surface);
791         break;
792 
793     case SVGA_REG_HEIGHT:
794         ret = s->new_height ? s->new_height : surface_height(surface);
795         break;
796 
797     case SVGA_REG_MAX_WIDTH:
798         ret = SVGA_MAX_WIDTH;
799         break;
800 
801     case SVGA_REG_MAX_HEIGHT:
802         ret = SVGA_MAX_HEIGHT;
803         break;
804 
805     case SVGA_REG_DEPTH:
806         ret = (s->new_depth == 32) ? 24 : s->new_depth;
807         break;
808 
809     case SVGA_REG_BITS_PER_PIXEL:
810     case SVGA_REG_HOST_BITS_PER_PIXEL:
811         ret = s->new_depth;
812         break;
813 
814     case SVGA_REG_PSEUDOCOLOR:
815         ret = 0x0;
816         break;
817 
818     case SVGA_REG_RED_MASK:
819         pf = qemu_default_pixelformat(s->new_depth);
820         ret = pf.rmask;
821         break;
822 
823     case SVGA_REG_GREEN_MASK:
824         pf = qemu_default_pixelformat(s->new_depth);
825         ret = pf.gmask;
826         break;
827 
828     case SVGA_REG_BLUE_MASK:
829         pf = qemu_default_pixelformat(s->new_depth);
830         ret = pf.bmask;
831         break;
832 
833     case SVGA_REG_BYTES_PER_LINE:
834         if (s->new_width) {
835             ret = (s->new_depth * s->new_width) / 8;
836         } else {
837             ret = surface_stride(surface);
838         }
839         break;
840 
841     case SVGA_REG_FB_START: {
842         struct pci_vmsvga_state_s *pci_vmsvga
843             = container_of(s, struct pci_vmsvga_state_s, chip);
844         ret = pci_get_bar_addr(PCI_DEVICE(pci_vmsvga), 1);
845         break;
846     }
847 
848     case SVGA_REG_FB_OFFSET:
849         ret = 0x0;
850         break;
851 
852     case SVGA_REG_VRAM_SIZE:
853         ret = s->vga.vram_size; /* No physical VRAM besides the framebuffer */
854         break;
855 
856     case SVGA_REG_FB_SIZE:
857         ret = s->vga.vram_size;
858         break;
859 
860     case SVGA_REG_CAPABILITIES:
861         caps = SVGA_CAP_NONE;
862 #ifdef HW_RECT_ACCEL
863         caps |= SVGA_CAP_RECT_COPY;
864 #endif
865 #ifdef HW_FILL_ACCEL
866         caps |= SVGA_CAP_RECT_FILL;
867 #endif
868 #ifdef HW_MOUSE_ACCEL
869         if (dpy_cursor_define_supported(s->vga.con)) {
870             caps |= SVGA_CAP_CURSOR | SVGA_CAP_CURSOR_BYPASS_2 |
871                     SVGA_CAP_CURSOR_BYPASS;
872         }
873 #endif
874         ret = caps;
875         break;
876 
877     case SVGA_REG_MEM_START: {
878         struct pci_vmsvga_state_s *pci_vmsvga
879             = container_of(s, struct pci_vmsvga_state_s, chip);
880         ret = pci_get_bar_addr(PCI_DEVICE(pci_vmsvga), 2);
881         break;
882     }
883 
884     case SVGA_REG_MEM_SIZE:
885         ret = s->fifo_size;
886         break;
887 
888     case SVGA_REG_CONFIG_DONE:
889         ret = s->config;
890         break;
891 
892     case SVGA_REG_SYNC:
893     case SVGA_REG_BUSY:
894         ret = s->syncing;
895         break;
896 
897     case SVGA_REG_GUEST_ID:
898         ret = s->guest;
899         break;
900 
901     case SVGA_REG_CURSOR_ID:
902         ret = s->cursor.id;
903         break;
904 
905     case SVGA_REG_CURSOR_X:
906         ret = s->cursor.x;
907         break;
908 
909     case SVGA_REG_CURSOR_Y:
910         ret = s->cursor.y;
911         break;
912 
913     case SVGA_REG_CURSOR_ON:
914         ret = s->cursor.on;
915         break;
916 
917     case SVGA_REG_SCRATCH_SIZE:
918         ret = s->scratch_size;
919         break;
920 
921     case SVGA_REG_MEM_REGS:
922     case SVGA_REG_NUM_DISPLAYS:
923     case SVGA_REG_PITCHLOCK:
924     case SVGA_PALETTE_BASE ... SVGA_PALETTE_END:
925         ret = 0;
926         break;
927 
928     default:
929         if (s->index >= SVGA_SCRATCH_BASE &&
930             s->index < SVGA_SCRATCH_BASE + s->scratch_size) {
931             ret = s->scratch[s->index - SVGA_SCRATCH_BASE];
932             break;
933         }
934         printf("%s: Bad register %02x\n", __func__, s->index);
935         ret = 0;
936         break;
937     }
938 
939     if (s->index >= SVGA_SCRATCH_BASE) {
940         trace_vmware_scratch_read(s->index, ret);
941     } else if (s->index >= SVGA_PALETTE_BASE) {
942         trace_vmware_palette_read(s->index, ret);
943     } else {
944         trace_vmware_value_read(s->index, ret);
945     }
946     return ret;
947 }
948 
949 static void vmsvga_value_write(void *opaque, uint32_t address, uint32_t value)
950 {
951     struct vmsvga_state_s *s = opaque;
952 
953     if (s->index >= SVGA_SCRATCH_BASE) {
954         trace_vmware_scratch_write(s->index, value);
955     } else if (s->index >= SVGA_PALETTE_BASE) {
956         trace_vmware_palette_write(s->index, value);
957     } else {
958         trace_vmware_value_write(s->index, value);
959     }
960     switch (s->index) {
961     case SVGA_REG_ID:
962         if (value == SVGA_ID_2 || value == SVGA_ID_1 || value == SVGA_ID_0) {
963             s->svgaid = value;
964         }
965         break;
966 
967     case SVGA_REG_ENABLE:
968         s->enable = !!value;
969         s->invalidated = 1;
970         s->vga.hw_ops->invalidate(&s->vga);
971         if (s->enable && s->config) {
972             vga_dirty_log_stop(&s->vga);
973         } else {
974             vga_dirty_log_start(&s->vga);
975         }
976         break;
977 
978     case SVGA_REG_WIDTH:
979         if (value <= SVGA_MAX_WIDTH) {
980             s->new_width = value;
981             s->invalidated = 1;
982         } else {
983             printf("%s: Bad width: %i\n", __func__, value);
984         }
985         break;
986 
987     case SVGA_REG_HEIGHT:
988         if (value <= SVGA_MAX_HEIGHT) {
989             s->new_height = value;
990             s->invalidated = 1;
991         } else {
992             printf("%s: Bad height: %i\n", __func__, value);
993         }
994         break;
995 
996     case SVGA_REG_BITS_PER_PIXEL:
997         if (value != 32) {
998             printf("%s: Bad bits per pixel: %i bits\n", __func__, value);
999             s->config = 0;
1000             s->invalidated = 1;
1001         }
1002         break;
1003 
1004     case SVGA_REG_CONFIG_DONE:
1005         if (value) {
1006             s->fifo = (uint32_t *) s->fifo_ptr;
1007             /* Check range and alignment.  */
1008             if ((CMD(min) | CMD(max) | CMD(next_cmd) | CMD(stop)) & 3) {
1009                 break;
1010             }
1011             if (CMD(min) < (uint8_t *) s->cmd->fifo - (uint8_t *) s->fifo) {
1012                 break;
1013             }
1014             if (CMD(max) > SVGA_FIFO_SIZE) {
1015                 break;
1016             }
1017             if (CMD(max) < CMD(min) + 10 * 1024) {
1018                 break;
1019             }
1020             vga_dirty_log_stop(&s->vga);
1021         }
1022         s->config = !!value;
1023         break;
1024 
1025     case SVGA_REG_SYNC:
1026         s->syncing = 1;
1027         vmsvga_fifo_run(s); /* Or should we just wait for update_display? */
1028         break;
1029 
1030     case SVGA_REG_GUEST_ID:
1031         s->guest = value;
1032 #ifdef VERBOSE
1033         if (value >= GUEST_OS_BASE && value < GUEST_OS_BASE +
1034             ARRAY_SIZE(vmsvga_guest_id)) {
1035             printf("%s: guest runs %s.\n", __func__,
1036                    vmsvga_guest_id[value - GUEST_OS_BASE]);
1037         }
1038 #endif
1039         break;
1040 
1041     case SVGA_REG_CURSOR_ID:
1042         s->cursor.id = value;
1043         break;
1044 
1045     case SVGA_REG_CURSOR_X:
1046         s->cursor.x = value;
1047         break;
1048 
1049     case SVGA_REG_CURSOR_Y:
1050         s->cursor.y = value;
1051         break;
1052 
1053     case SVGA_REG_CURSOR_ON:
1054         s->cursor.on |= (value == SVGA_CURSOR_ON_SHOW);
1055         s->cursor.on &= (value != SVGA_CURSOR_ON_HIDE);
1056 #ifdef HW_MOUSE_ACCEL
1057         if (value <= SVGA_CURSOR_ON_SHOW) {
1058             dpy_mouse_set(s->vga.con, s->cursor.x, s->cursor.y, s->cursor.on);
1059         }
1060 #endif
1061         break;
1062 
1063     case SVGA_REG_DEPTH:
1064     case SVGA_REG_MEM_REGS:
1065     case SVGA_REG_NUM_DISPLAYS:
1066     case SVGA_REG_PITCHLOCK:
1067     case SVGA_PALETTE_BASE ... SVGA_PALETTE_END:
1068         break;
1069 
1070     default:
1071         if (s->index >= SVGA_SCRATCH_BASE &&
1072                 s->index < SVGA_SCRATCH_BASE + s->scratch_size) {
1073             s->scratch[s->index - SVGA_SCRATCH_BASE] = value;
1074             break;
1075         }
1076         printf("%s: Bad register %02x\n", __func__, s->index);
1077     }
1078 }
1079 
1080 static uint32_t vmsvga_bios_read(void *opaque, uint32_t address)
1081 {
1082     printf("%s: what are we supposed to return?\n", __func__);
1083     return 0xcafe;
1084 }
1085 
1086 static void vmsvga_bios_write(void *opaque, uint32_t address, uint32_t data)
1087 {
1088     printf("%s: what are we supposed to do with (%08x)?\n", __func__, data);
1089 }
1090 
1091 static inline void vmsvga_check_size(struct vmsvga_state_s *s)
1092 {
1093     DisplaySurface *surface = qemu_console_surface(s->vga.con);
1094 
1095     if (s->new_width != surface_width(surface) ||
1096         s->new_height != surface_height(surface) ||
1097         s->new_depth != surface_bits_per_pixel(surface)) {
1098         int stride = (s->new_depth * s->new_width) / 8;
1099         pixman_format_code_t format =
1100             qemu_default_pixman_format(s->new_depth, true);
1101         trace_vmware_setmode(s->new_width, s->new_height, s->new_depth);
1102         surface = qemu_create_displaysurface_from(s->new_width, s->new_height,
1103                                                   format, stride,
1104                                                   s->vga.vram_ptr);
1105         dpy_gfx_replace_surface(s->vga.con, surface);
1106         s->invalidated = 1;
1107     }
1108 }
1109 
1110 static void vmsvga_update_display(void *opaque)
1111 {
1112     struct vmsvga_state_s *s = opaque;
1113     DisplaySurface *surface;
1114     bool dirty = false;
1115 
1116     if (!s->enable) {
1117         s->vga.hw_ops->gfx_update(&s->vga);
1118         return;
1119     }
1120 
1121     vmsvga_check_size(s);
1122     surface = qemu_console_surface(s->vga.con);
1123 
1124     vmsvga_fifo_run(s);
1125     vmsvga_update_rect_flush(s);
1126 
1127     /*
1128      * Is it more efficient to look at vram VGA-dirty bits or wait
1129      * for the driver to issue SVGA_CMD_UPDATE?
1130      */
1131     if (memory_region_is_logging(&s->vga.vram, DIRTY_MEMORY_VGA)) {
1132         vga_sync_dirty_bitmap(&s->vga);
1133         dirty = memory_region_get_dirty(&s->vga.vram, 0,
1134             surface_stride(surface) * surface_height(surface),
1135             DIRTY_MEMORY_VGA);
1136     }
1137     if (s->invalidated || dirty) {
1138         s->invalidated = 0;
1139         dpy_gfx_update(s->vga.con, 0, 0,
1140                    surface_width(surface), surface_height(surface));
1141     }
1142     if (dirty) {
1143         memory_region_reset_dirty(&s->vga.vram, 0,
1144             surface_stride(surface) * surface_height(surface),
1145             DIRTY_MEMORY_VGA);
1146     }
1147 }
1148 
1149 static void vmsvga_reset(DeviceState *dev)
1150 {
1151     struct pci_vmsvga_state_s *pci = VMWARE_SVGA(dev);
1152     struct vmsvga_state_s *s = &pci->chip;
1153 
1154     s->index = 0;
1155     s->enable = 0;
1156     s->config = 0;
1157     s->svgaid = SVGA_ID;
1158     s->cursor.on = 0;
1159     s->redraw_fifo_first = 0;
1160     s->redraw_fifo_last = 0;
1161     s->syncing = 0;
1162 
1163     vga_dirty_log_start(&s->vga);
1164 }
1165 
1166 static void vmsvga_invalidate_display(void *opaque)
1167 {
1168     struct vmsvga_state_s *s = opaque;
1169     if (!s->enable) {
1170         s->vga.hw_ops->invalidate(&s->vga);
1171         return;
1172     }
1173 
1174     s->invalidated = 1;
1175 }
1176 
1177 static void vmsvga_text_update(void *opaque, console_ch_t *chardata)
1178 {
1179     struct vmsvga_state_s *s = opaque;
1180 
1181     if (s->vga.hw_ops->text_update) {
1182         s->vga.hw_ops->text_update(&s->vga, chardata);
1183     }
1184 }
1185 
1186 static int vmsvga_post_load(void *opaque, int version_id)
1187 {
1188     struct vmsvga_state_s *s = opaque;
1189 
1190     s->invalidated = 1;
1191     if (s->config) {
1192         s->fifo = (uint32_t *) s->fifo_ptr;
1193     }
1194     return 0;
1195 }
1196 
1197 static const VMStateDescription vmstate_vmware_vga_internal = {
1198     .name = "vmware_vga_internal",
1199     .version_id = 0,
1200     .minimum_version_id = 0,
1201     .post_load = vmsvga_post_load,
1202     .fields = (VMStateField[]) {
1203         VMSTATE_INT32_EQUAL(new_depth, struct vmsvga_state_s),
1204         VMSTATE_INT32(enable, struct vmsvga_state_s),
1205         VMSTATE_INT32(config, struct vmsvga_state_s),
1206         VMSTATE_INT32(cursor.id, struct vmsvga_state_s),
1207         VMSTATE_INT32(cursor.x, struct vmsvga_state_s),
1208         VMSTATE_INT32(cursor.y, struct vmsvga_state_s),
1209         VMSTATE_INT32(cursor.on, struct vmsvga_state_s),
1210         VMSTATE_INT32(index, struct vmsvga_state_s),
1211         VMSTATE_VARRAY_INT32(scratch, struct vmsvga_state_s,
1212                              scratch_size, 0, vmstate_info_uint32, uint32_t),
1213         VMSTATE_INT32(new_width, struct vmsvga_state_s),
1214         VMSTATE_INT32(new_height, struct vmsvga_state_s),
1215         VMSTATE_UINT32(guest, struct vmsvga_state_s),
1216         VMSTATE_UINT32(svgaid, struct vmsvga_state_s),
1217         VMSTATE_INT32(syncing, struct vmsvga_state_s),
1218         VMSTATE_UNUSED(4), /* was fb_size */
1219         VMSTATE_END_OF_LIST()
1220     }
1221 };
1222 
1223 static const VMStateDescription vmstate_vmware_vga = {
1224     .name = "vmware_vga",
1225     .version_id = 0,
1226     .minimum_version_id = 0,
1227     .fields = (VMStateField[]) {
1228         VMSTATE_PCI_DEVICE(parent_obj, struct pci_vmsvga_state_s),
1229         VMSTATE_STRUCT(chip, struct pci_vmsvga_state_s, 0,
1230                        vmstate_vmware_vga_internal, struct vmsvga_state_s),
1231         VMSTATE_END_OF_LIST()
1232     }
1233 };
1234 
1235 static const GraphicHwOps vmsvga_ops = {
1236     .invalidate  = vmsvga_invalidate_display,
1237     .gfx_update  = vmsvga_update_display,
1238     .text_update = vmsvga_text_update,
1239 };
1240 
1241 static void vmsvga_init(DeviceState *dev, struct vmsvga_state_s *s,
1242                         MemoryRegion *address_space, MemoryRegion *io)
1243 {
1244     s->scratch_size = SVGA_SCRATCH_SIZE;
1245     s->scratch = g_malloc(s->scratch_size * 4);
1246 
1247     s->vga.con = graphic_console_init(dev, 0, &vmsvga_ops, s);
1248 
1249     s->fifo_size = SVGA_FIFO_SIZE;
1250     memory_region_init_ram(&s->fifo_ram, NULL, "vmsvga.fifo", s->fifo_size,
1251                            &error_fatal);
1252     vmstate_register_ram_global(&s->fifo_ram);
1253     s->fifo_ptr = memory_region_get_ram_ptr(&s->fifo_ram);
1254 
1255     vga_common_init(&s->vga, OBJECT(dev), true);
1256     vga_init(&s->vga, OBJECT(dev), address_space, io, true);
1257     vmstate_register(NULL, 0, &vmstate_vga_common, &s->vga);
1258     s->new_depth = 32;
1259 }
1260 
1261 static uint64_t vmsvga_io_read(void *opaque, hwaddr addr, unsigned size)
1262 {
1263     struct vmsvga_state_s *s = opaque;
1264 
1265     switch (addr) {
1266     case SVGA_IO_MUL * SVGA_INDEX_PORT: return vmsvga_index_read(s, addr);
1267     case SVGA_IO_MUL * SVGA_VALUE_PORT: return vmsvga_value_read(s, addr);
1268     case SVGA_IO_MUL * SVGA_BIOS_PORT: return vmsvga_bios_read(s, addr);
1269     default: return -1u;
1270     }
1271 }
1272 
1273 static void vmsvga_io_write(void *opaque, hwaddr addr,
1274                             uint64_t data, unsigned size)
1275 {
1276     struct vmsvga_state_s *s = opaque;
1277 
1278     switch (addr) {
1279     case SVGA_IO_MUL * SVGA_INDEX_PORT:
1280         vmsvga_index_write(s, addr, data);
1281         break;
1282     case SVGA_IO_MUL * SVGA_VALUE_PORT:
1283         vmsvga_value_write(s, addr, data);
1284         break;
1285     case SVGA_IO_MUL * SVGA_BIOS_PORT:
1286         vmsvga_bios_write(s, addr, data);
1287         break;
1288     }
1289 }
1290 
1291 static const MemoryRegionOps vmsvga_io_ops = {
1292     .read = vmsvga_io_read,
1293     .write = vmsvga_io_write,
1294     .endianness = DEVICE_LITTLE_ENDIAN,
1295     .valid = {
1296         .min_access_size = 4,
1297         .max_access_size = 4,
1298         .unaligned = true,
1299     },
1300     .impl = {
1301         .unaligned = true,
1302     },
1303 };
1304 
1305 static void pci_vmsvga_realize(PCIDevice *dev, Error **errp)
1306 {
1307     struct pci_vmsvga_state_s *s = VMWARE_SVGA(dev);
1308 
1309     dev->config[PCI_CACHE_LINE_SIZE] = 0x08;
1310     dev->config[PCI_LATENCY_TIMER] = 0x40;
1311     dev->config[PCI_INTERRUPT_LINE] = 0xff;          /* End */
1312 
1313     memory_region_init_io(&s->io_bar, NULL, &vmsvga_io_ops, &s->chip,
1314                           "vmsvga-io", 0x10);
1315     memory_region_set_flush_coalesced(&s->io_bar);
1316     pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io_bar);
1317 
1318     vmsvga_init(DEVICE(dev), &s->chip,
1319                 pci_address_space(dev), pci_address_space_io(dev));
1320 
1321     pci_register_bar(dev, 1, PCI_BASE_ADDRESS_MEM_PREFETCH,
1322                      &s->chip.vga.vram);
1323     pci_register_bar(dev, 2, PCI_BASE_ADDRESS_MEM_PREFETCH,
1324                      &s->chip.fifo_ram);
1325 
1326     if (!dev->rom_bar) {
1327         /* compatibility with pc-0.13 and older */
1328         vga_init_vbe(&s->chip.vga, OBJECT(dev), pci_address_space(dev));
1329     }
1330 }
1331 
1332 static Property vga_vmware_properties[] = {
1333     DEFINE_PROP_UINT32("vgamem_mb", struct pci_vmsvga_state_s,
1334                        chip.vga.vram_size_mb, 16),
1335     DEFINE_PROP_END_OF_LIST(),
1336 };
1337 
1338 static void vmsvga_class_init(ObjectClass *klass, void *data)
1339 {
1340     DeviceClass *dc = DEVICE_CLASS(klass);
1341     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
1342 
1343     k->realize = pci_vmsvga_realize;
1344     k->romfile = "vgabios-vmware.bin";
1345     k->vendor_id = PCI_VENDOR_ID_VMWARE;
1346     k->device_id = SVGA_PCI_DEVICE_ID;
1347     k->class_id = PCI_CLASS_DISPLAY_VGA;
1348     k->subsystem_vendor_id = PCI_VENDOR_ID_VMWARE;
1349     k->subsystem_id = SVGA_PCI_DEVICE_ID;
1350     dc->reset = vmsvga_reset;
1351     dc->vmsd = &vmstate_vmware_vga;
1352     dc->props = vga_vmware_properties;
1353     dc->hotpluggable = false;
1354     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
1355 }
1356 
1357 static const TypeInfo vmsvga_info = {
1358     .name          = TYPE_VMWARE_SVGA,
1359     .parent        = TYPE_PCI_DEVICE,
1360     .instance_size = sizeof(struct pci_vmsvga_state_s),
1361     .class_init    = vmsvga_class_init,
1362 };
1363 
1364 static void vmsvga_register_types(void)
1365 {
1366     type_register_static(&vmsvga_info);
1367 }
1368 
1369 type_init(vmsvga_register_types)
1370