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1 /*
2  * QEMU Cirrus CLGD 54xx VGA Emulator.
3  *
4  * Copyright (c) 2004 Fabrice Bellard
5  * Copyright (c) 2004 Makoto Suzuki (suzu)
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a copy
8  * of this software and associated documentation files (the "Software"), to deal
9  * in the Software without restriction, including without limitation the rights
10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11  * copies of the Software, and to permit persons to whom the Software is
12  * furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included in
15  * all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23  * THE SOFTWARE.
24  */
25 /*
26  * Reference: Finn Thogersons' VGADOC4b
27  *   available at http://home.worldonline.dk/~finth/
28  */
29 #include "qemu/osdep.h"
30 #include "qemu/units.h"
31 #include "qapi/error.h"
32 #include "trace.h"
33 #include "hw/hw.h"
34 #include "hw/pci/pci.h"
35 #include "ui/pixel_ops.h"
36 #include "vga_int.h"
37 #include "hw/loader.h"
38
39 /*
40  * TODO:
41  *    - destination write mask support not complete (bits 5..7)
42  *    - optimize linear mappings
43  *    - optimize bitblt functions
44  */
45
46 //#define DEBUG_CIRRUS
47 //#define DEBUG_BITBLT
48
49 /***************************************
50  *
51  *  definitions
52  *
53  ***************************************/
54
55 // ID
56 #define CIRRUS_ID_CLGD5422  (0x23<<2)
57 #define CIRRUS_ID_CLGD5426  (0x24<<2)
58 #define CIRRUS_ID_CLGD5424  (0x25<<2)
59 #define CIRRUS_ID_CLGD5428  (0x26<<2)
60 #define CIRRUS_ID_CLGD5430  (0x28<<2)
61 #define CIRRUS_ID_CLGD5434  (0x2A<<2)
62 #define CIRRUS_ID_CLGD5436  (0x2B<<2)
63 #define CIRRUS_ID_CLGD5446  (0x2E<<2)
64
65 // sequencer 0x07
66 #define CIRRUS_SR7_BPP_VGA            0x00
67 #define CIRRUS_SR7_BPP_SVGA           0x01
68 #define CIRRUS_SR7_BPP_MASK           0x0e
69 #define CIRRUS_SR7_BPP_8              0x00
70 #define CIRRUS_SR7_BPP_16_DOUBLEVCLK  0x02
71 #define CIRRUS_SR7_BPP_24             0x04
72 #define CIRRUS_SR7_BPP_16             0x06
73 #define CIRRUS_SR7_BPP_32             0x08
74 #define CIRRUS_SR7_ISAADDR_MASK       0xe0
75
76 // sequencer 0x0f
77 #define CIRRUS_MEMSIZE_512k        0x08
78 #define CIRRUS_MEMSIZE_1M          0x10
79 #define CIRRUS_MEMSIZE_2M          0x18
80 #define CIRRUS_MEMFLAGS_BANKSWITCH 0x80 // bank switching is enabled.
81
82 // sequencer 0x12
83 #define CIRRUS_CURSOR_SHOW         0x01
84 #define CIRRUS_CURSOR_HIDDENPEL    0x02
85 #define CIRRUS_CURSOR_LARGE        0x04 // 64x64 if set, 32x32 if clear
86
87 // sequencer 0x17
88 #define CIRRUS_BUSTYPE_VLBFAST   0x10
89 #define CIRRUS_BUSTYPE_PCI       0x20
90 #define CIRRUS_BUSTYPE_VLBSLOW   0x30
91 #define CIRRUS_BUSTYPE_ISA       0x38
92 #define CIRRUS_MMIO_ENABLE       0x04
93 #define CIRRUS_MMIO_USE_PCIADDR  0x40   // 0xb8000 if cleared.
94 #define CIRRUS_MEMSIZEEXT_DOUBLE 0x80
95
96 // control 0x0b
97 #define CIRRUS_BANKING_DUAL             0x01
98 #define CIRRUS_BANKING_GRANULARITY_16K  0x20    // set:16k, clear:4k
99
100 // control 0x30
101 #define CIRRUS_BLTMODE_BACKWARDS        0x01
102 #define CIRRUS_BLTMODE_MEMSYSDEST       0x02
103 #define CIRRUS_BLTMODE_MEMSYSSRC        0x04
104 #define CIRRUS_BLTMODE_TRANSPARENTCOMP  0x08
105 #define CIRRUS_BLTMODE_PATTERNCOPY      0x40
106 #define CIRRUS_BLTMODE_COLOREXPAND      0x80
107 #define CIRRUS_BLTMODE_PIXELWIDTHMASK   0x30
108 #define CIRRUS_BLTMODE_PIXELWIDTH8      0x00
109 #define CIRRUS_BLTMODE_PIXELWIDTH16     0x10
110 #define CIRRUS_BLTMODE_PIXELWIDTH24     0x20
111 #define CIRRUS_BLTMODE_PIXELWIDTH32     0x30
112
113 // control 0x31
114 #define CIRRUS_BLT_BUSY                 0x01
115 #define CIRRUS_BLT_START                0x02
116 #define CIRRUS_BLT_RESET                0x04
117 #define CIRRUS_BLT_FIFOUSED             0x10
118 #define CIRRUS_BLT_AUTOSTART            0x80
119
120 // control 0x32
121 #define CIRRUS_ROP_0                    0x00
122 #define CIRRUS_ROP_SRC_AND_DST          0x05
123 #define CIRRUS_ROP_NOP                  0x06
124 #define CIRRUS_ROP_SRC_AND_NOTDST       0x09
125 #define CIRRUS_ROP_NOTDST               0x0b
126 #define CIRRUS_ROP_SRC                  0x0d
127 #define CIRRUS_ROP_1                    0x0e
128 #define CIRRUS_ROP_NOTSRC_AND_DST       0x50
129 #define CIRRUS_ROP_SRC_XOR_DST          0x59
130 #define CIRRUS_ROP_SRC_OR_DST           0x6d
131 #define CIRRUS_ROP_NOTSRC_OR_NOTDST     0x90
132 #define CIRRUS_ROP_SRC_NOTXOR_DST       0x95
133 #define CIRRUS_ROP_SRC_OR_NOTDST        0xad
134 #define CIRRUS_ROP_NOTSRC               0xd0
135 #define CIRRUS_ROP_NOTSRC_OR_DST        0xd6
136 #define CIRRUS_ROP_NOTSRC_AND_NOTDST    0xda
137
138 #define CIRRUS_ROP_NOP_INDEX 2
139 #define CIRRUS_ROP_SRC_INDEX 5
140
141 // control 0x33
142 #define CIRRUS_BLTMODEEXT_SOLIDFILL        0x04
143 #define CIRRUS_BLTMODEEXT_COLOREXPINV      0x02
144 #define CIRRUS_BLTMODEEXT_DWORDGRANULARITY 0x01
145
146 // memory-mapped IO
147 #define CIRRUS_MMIO_BLTBGCOLOR        0x00      // dword
148 #define CIRRUS_MMIO_BLTFGCOLOR        0x04      // dword
149 #define CIRRUS_MMIO_BLTWIDTH          0x08      // word
150 #define CIRRUS_MMIO_BLTHEIGHT         0x0a      // word
151 #define CIRRUS_MMIO_BLTDESTPITCH      0x0c      // word
152 #define CIRRUS_MMIO_BLTSRCPITCH       0x0e      // word
153 #define CIRRUS_MMIO_BLTDESTADDR       0x10      // dword
154 #define CIRRUS_MMIO_BLTSRCADDR        0x14      // dword
155 #define CIRRUS_MMIO_BLTWRITEMASK      0x17      // byte
156 #define CIRRUS_MMIO_BLTMODE           0x18      // byte
157 #define CIRRUS_MMIO_BLTROP            0x1a      // byte
158 #define CIRRUS_MMIO_BLTMODEEXT        0x1b      // byte
159 #define CIRRUS_MMIO_BLTTRANSPARENTCOLOR 0x1c    // word?
160 #define CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK 0x20        // word?
161 #define CIRRUS_MMIO_LINEARDRAW_START_X 0x24     // word
162 #define CIRRUS_MMIO_LINEARDRAW_START_Y 0x26     // word
163 #define CIRRUS_MMIO_LINEARDRAW_END_X  0x28      // word
164 #define CIRRUS_MMIO_LINEARDRAW_END_Y  0x2a      // word
165 #define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_INC 0x2c       // byte
166 #define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_ROLLOVER 0x2d  // byte
167 #define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_MASK 0x2e      // byte
168 #define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_ACCUM 0x2f     // byte
169 #define CIRRUS_MMIO_BRESENHAM_K1      0x30      // word
170 #define CIRRUS_MMIO_BRESENHAM_K3      0x32      // word
171 #define CIRRUS_MMIO_BRESENHAM_ERROR   0x34      // word
172 #define CIRRUS_MMIO_BRESENHAM_DELTA_MAJOR 0x36  // word
173 #define CIRRUS_MMIO_BRESENHAM_DIRECTION 0x38    // byte
174 #define CIRRUS_MMIO_LINEDRAW_MODE     0x39      // byte
175 #define CIRRUS_MMIO_BLTSTATUS         0x40      // byte
176
177 #define CIRRUS_PNPMMIO_SIZE         0x1000
178
179 struct CirrusVGAState;
180 typedef void (*cirrus_bitblt_rop_t) (struct CirrusVGAState *s,
181                                      uint32_t dstaddr, uint32_t srcaddr,
182                                      int dstpitch, int srcpitch,
183                                      int bltwidth, int bltheight);
184 typedef void (*cirrus_fill_t)(struct CirrusVGAState *s,
185                               uint32_t dstaddr, int dst_pitch,
186                               int width, int height);
187
188 typedef struct CirrusVGAState {
189     VGACommonState vga;
190
191     MemoryRegion cirrus_vga_io;
192     MemoryRegion cirrus_linear_io;
193     MemoryRegion cirrus_linear_bitblt_io;
194     MemoryRegion cirrus_mmio_io;
195     MemoryRegion pci_bar;
196     bool linear_vram;  /* vga.vram mapped over cirrus_linear_io */
197     MemoryRegion low_mem_container; /* container for 0xa0000-0xc0000 */
198     MemoryRegion low_mem;           /* always mapped, overridden by: */
199     MemoryRegion cirrus_bank[2];    /*   aliases at 0xa0000-0xb0000  */
200     uint32_t cirrus_addr_mask;
201     uint32_t linear_mmio_mask;
202     uint8_t cirrus_shadow_gr0;
203     uint8_t cirrus_shadow_gr1;
204     uint8_t cirrus_hidden_dac_lockindex;
205     uint8_t cirrus_hidden_dac_data;
206     uint32_t cirrus_bank_base[2];
207     uint32_t cirrus_bank_limit[2];
208     uint8_t cirrus_hidden_palette[48];
209     bool enable_blitter;
210     int cirrus_blt_pixelwidth;
211     int cirrus_blt_width;
212     int cirrus_blt_height;
213     int cirrus_blt_dstpitch;
214     int cirrus_blt_srcpitch;
215     uint32_t cirrus_blt_fgcol;
216     uint32_t cirrus_blt_bgcol;
217     uint32_t cirrus_blt_dstaddr;
218     uint32_t cirrus_blt_srcaddr;
219     uint8_t cirrus_blt_mode;
220     uint8_t cirrus_blt_modeext;
221     cirrus_bitblt_rop_t cirrus_rop;
222 #define CIRRUS_BLTBUFSIZE (2048 * 4) /* one line width */
223     uint8_t cirrus_bltbuf[CIRRUS_BLTBUFSIZE];
224     uint8_t *cirrus_srcptr;
225     uint8_t *cirrus_srcptr_end;
226     uint32_t cirrus_srccounter;
227     /* hwcursor display state */
228     int last_hw_cursor_size;
229     int last_hw_cursor_x;
230     int last_hw_cursor_y;
231     int last_hw_cursor_y_start;
232     int last_hw_cursor_y_end;
233     int real_vram_size; /* XXX: suppress that */
234     int device_id;
235     int bustype;
236 } CirrusVGAState;
237
238 typedef struct PCICirrusVGAState {
239     PCIDevice dev;
240     CirrusVGAState cirrus_vga;
241 } PCICirrusVGAState;
242
243 #define TYPE_PCI_CIRRUS_VGA "cirrus-vga"
244 #define PCI_CIRRUS_VGA(obj) \
245     OBJECT_CHECK(PCICirrusVGAState, (obj), TYPE_PCI_CIRRUS_VGA)
246
247 #define TYPE_ISA_CIRRUS_VGA "isa-cirrus-vga"
248 #define ISA_CIRRUS_VGA(obj) \
249     OBJECT_CHECK(ISACirrusVGAState, (obj), TYPE_ISA_CIRRUS_VGA)
250
251 typedef struct ISACirrusVGAState {
252     ISADevice parent_obj;
253
254     CirrusVGAState cirrus_vga;
255 } ISACirrusVGAState;
256
257 static uint8_t rop_to_index[256];
258
259 /***************************************
260  *
261  *  prototypes.
262  *
263  ***************************************/
264
265
266 static void cirrus_bitblt_reset(CirrusVGAState *s);
267 static void cirrus_update_memory_access(CirrusVGAState *s);
268
269 /***************************************
270  *
271  *  raster operations
272  *
273  ***************************************/
274
275 static bool blit_region_is_unsafe(struct CirrusVGAState *s,
276                                   int32_t pitch, int32_t addr)
277 {
278     if (!pitch) {
279         return true;
280     }
281     if (pitch < 0) {
282         int64_t min = addr
283             + ((int64_t)s->cirrus_blt_height - 1) * pitch
284             - s->cirrus_blt_width;
285         if (min < -1 || addr >= s->vga.vram_size) {
286             return true;
287         }
288     } else {
289         int64_t max = addr
290             + ((int64_t)s->cirrus_blt_height-1) * pitch
291             + s->cirrus_blt_width;
292         if (max > s->vga.vram_size) {
293             return true;
294         }
295     }
296     return false;
297 }
298
299 static bool blit_is_unsafe(struct CirrusVGAState *s, bool dst_only)
300 {
301     /* should be the case, see cirrus_bitblt_start */
302     assert(s->cirrus_blt_width > 0);
303     assert(s->cirrus_blt_height > 0);
304
305     if (s->cirrus_blt_width > CIRRUS_BLTBUFSIZE) {
306         return true;
307     }
308
309     if (blit_region_is_unsafe(s, s->cirrus_blt_dstpitch,
310                               s->cirrus_blt_dstaddr)) {
311         return true;
312     }
313     if (dst_only) {
314         return false;
315     }
316     if (blit_region_is_unsafe(s, s->cirrus_blt_srcpitch,
317                               s->cirrus_blt_srcaddr)) {
318         return true;
319     }
320
321     return false;
322 }
323
324 static void cirrus_bitblt_rop_nop(CirrusVGAState *s,
325                                   uint32_t dstaddr, uint32_t srcaddr,
326                                   int dstpitch,int srcpitch,
327                                   int bltwidth,int bltheight)
328 {
329 }
330
331 static void cirrus_bitblt_fill_nop(CirrusVGAState *s,
332                                    uint32_t dstaddr,
333                                    int dstpitch, int bltwidth,int bltheight)
334 {
335 }
336
337 static inline uint8_t cirrus_src(CirrusVGAState *s, uint32_t srcaddr)
338 {
339     if (s->cirrus_srccounter) {
340         /* cputovideo */
341         return s->cirrus_bltbuf[srcaddr & (CIRRUS_BLTBUFSIZE - 1)];
342     } else {
343         /* videotovideo */
344         return s->vga.vram_ptr[srcaddr & s->cirrus_addr_mask];
345     }
346 }
347
348 static inline uint16_t cirrus_src16(CirrusVGAState *s, uint32_t srcaddr)
349 {
350     uint16_t *src;
351
352     if (s->cirrus_srccounter) {
353         /* cputovideo */
354         src = (void *)&s->cirrus_bltbuf[srcaddr & (CIRRUS_BLTBUFSIZE - 1) & ~1];
355     } else {
356         /* videotovideo */
357         src = (void *)&s->vga.vram_ptr[srcaddr & s->cirrus_addr_mask & ~1];
358     }
359     return *src;
360 }
361
362 static inline uint32_t cirrus_src32(CirrusVGAState *s, uint32_t srcaddr)
363 {
364     uint32_t *src;
365
366     if (s->cirrus_srccounter) {
367         /* cputovideo */
368         src = (void *)&s->cirrus_bltbuf[srcaddr & (CIRRUS_BLTBUFSIZE - 1) & ~3];
369     } else {
370         /* videotovideo */
371         src = (void *)&s->vga.vram_ptr[srcaddr & s->cirrus_addr_mask & ~3];
372     }
373     return *src;
374 }
375
376 #define ROP_NAME 0
377 #define ROP_FN(d, s) 0
378 #include "cirrus_vga_rop.h"
379
380 #define ROP_NAME src_and_dst
381 #define ROP_FN(d, s) (s) & (d)
382 #include "cirrus_vga_rop.h"
383
384 #define ROP_NAME src_and_notdst
385 #define ROP_FN(d, s) (s) & (~(d))
386 #include "cirrus_vga_rop.h"
387
388 #define ROP_NAME notdst
389 #define ROP_FN(d, s) ~(d)
390 #include "cirrus_vga_rop.h"
391
392 #define ROP_NAME src
393 #define ROP_FN(d, s) s
394 #include "cirrus_vga_rop.h"
395
396 #define ROP_NAME 1
397 #define ROP_FN(d, s) ~0
398 #include "cirrus_vga_rop.h"
399
400 #define ROP_NAME notsrc_and_dst
401 #define ROP_FN(d, s) (~(s)) & (d)
402 #include "cirrus_vga_rop.h"
403
404 #define ROP_NAME src_xor_dst
405 #define ROP_FN(d, s) (s) ^ (d)
406 #include "cirrus_vga_rop.h"
407
408 #define ROP_NAME src_or_dst
409 #define ROP_FN(d, s) (s) | (d)
410 #include "cirrus_vga_rop.h"
411
412 #define ROP_NAME notsrc_or_notdst
413 #define ROP_FN(d, s) (~(s)) | (~(d))
414 #include "cirrus_vga_rop.h"
415
416 #define ROP_NAME src_notxor_dst
417 #define ROP_FN(d, s) ~((s) ^ (d))
418 #include "cirrus_vga_rop.h"
419
420 #define ROP_NAME src_or_notdst
421 #define ROP_FN(d, s) (s) | (~(d))
422 #include "cirrus_vga_rop.h"
423
424 #define ROP_NAME notsrc
425 #define ROP_FN(d, s) (~(s))
426 #include "cirrus_vga_rop.h"
427
428 #define ROP_NAME notsrc_or_dst
429 #define ROP_FN(d, s) (~(s)) | (d)
430 #include "cirrus_vga_rop.h"
431
432 #define ROP_NAME notsrc_and_notdst
433 #define ROP_FN(d, s) (~(s)) & (~(d))
434 #include "cirrus_vga_rop.h"
435
436 static const cirrus_bitblt_rop_t cirrus_fwd_rop[16] = {
437     cirrus_bitblt_rop_fwd_0,
438     cirrus_bitblt_rop_fwd_src_and_dst,
439     cirrus_bitblt_rop_nop,
440     cirrus_bitblt_rop_fwd_src_and_notdst,
441     cirrus_bitblt_rop_fwd_notdst,
442     cirrus_bitblt_rop_fwd_src,
443     cirrus_bitblt_rop_fwd_1,
444     cirrus_bitblt_rop_fwd_notsrc_and_dst,
445     cirrus_bitblt_rop_fwd_src_xor_dst,
446     cirrus_bitblt_rop_fwd_src_or_dst,
447     cirrus_bitblt_rop_fwd_notsrc_or_notdst,
448     cirrus_bitblt_rop_fwd_src_notxor_dst,
449     cirrus_bitblt_rop_fwd_src_or_notdst,
450     cirrus_bitblt_rop_fwd_notsrc,
451     cirrus_bitblt_rop_fwd_notsrc_or_dst,
452     cirrus_bitblt_rop_fwd_notsrc_and_notdst,
453 };
454
455 static const cirrus_bitblt_rop_t cirrus_bkwd_rop[16] = {
456     cirrus_bitblt_rop_bkwd_0,
457     cirrus_bitblt_rop_bkwd_src_and_dst,
458     cirrus_bitblt_rop_nop,
459     cirrus_bitblt_rop_bkwd_src_and_notdst,
460     cirrus_bitblt_rop_bkwd_notdst,
461     cirrus_bitblt_rop_bkwd_src,
462     cirrus_bitblt_rop_bkwd_1,
463     cirrus_bitblt_rop_bkwd_notsrc_and_dst,
464     cirrus_bitblt_rop_bkwd_src_xor_dst,
465     cirrus_bitblt_rop_bkwd_src_or_dst,
466     cirrus_bitblt_rop_bkwd_notsrc_or_notdst,
467     cirrus_bitblt_rop_bkwd_src_notxor_dst,
468     cirrus_bitblt_rop_bkwd_src_or_notdst,
469     cirrus_bitblt_rop_bkwd_notsrc,
470     cirrus_bitblt_rop_bkwd_notsrc_or_dst,
471     cirrus_bitblt_rop_bkwd_notsrc_and_notdst,
472 };
473
474 #define TRANSP_ROP(name) {\
475     name ## _8,\
476     name ## _16,\
477         }
478 #define TRANSP_NOP(func) {\
479     func,\
480     func,\
481         }
482
483 static const cirrus_bitblt_rop_t cirrus_fwd_transp_rop[16][2] = {
484     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_0),
485     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_and_dst),
486     TRANSP_NOP(cirrus_bitblt_rop_nop),
487     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_and_notdst),
488     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notdst),
489     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src),
490     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_1),
491     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_and_dst),
492     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_xor_dst),
493     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_or_dst),
494     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_or_notdst),
495     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_notxor_dst),
496     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_or_notdst),
497     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc),
498     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_or_dst),
499     TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_and_notdst),
500 };
501
502 static const cirrus_bitblt_rop_t cirrus_bkwd_transp_rop[16][2] = {
503     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_0),
504     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_and_dst),
505     TRANSP_NOP(cirrus_bitblt_rop_nop),
506     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_and_notdst),
507     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notdst),
508     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src),
509     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_1),
510     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_and_dst),
511     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_xor_dst),
512     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_or_dst),
513     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_or_notdst),
514     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_notxor_dst),
515     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_or_notdst),
516     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc),
517     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_or_dst),
518     TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_and_notdst),
519 };
520
521 #define ROP2(name) {\
522     name ## _8,\
523     name ## _16,\
524     name ## _24,\
525     name ## _32,\
526         }
527
528 #define ROP_NOP2(func) {\
529     func,\
530     func,\
531     func,\
532     func,\
533         }
534
535 static const cirrus_bitblt_rop_t cirrus_patternfill[16][4] = {
536     ROP2(cirrus_patternfill_0),
537     ROP2(cirrus_patternfill_src_and_dst),
538     ROP_NOP2(cirrus_bitblt_rop_nop),
539     ROP2(cirrus_patternfill_src_and_notdst),
540     ROP2(cirrus_patternfill_notdst),
541     ROP2(cirrus_patternfill_src),
542     ROP2(cirrus_patternfill_1),
543     ROP2(cirrus_patternfill_notsrc_and_dst),
544     ROP2(cirrus_patternfill_src_xor_dst),
545     ROP2(cirrus_patternfill_src_or_dst),
546     ROP2(cirrus_patternfill_notsrc_or_notdst),
547     ROP2(cirrus_patternfill_src_notxor_dst),
548     ROP2(cirrus_patternfill_src_or_notdst),
549     ROP2(cirrus_patternfill_notsrc),
550     ROP2(cirrus_patternfill_notsrc_or_dst),
551     ROP2(cirrus_patternfill_notsrc_and_notdst),
552 };
553
554 static const cirrus_bitblt_rop_t cirrus_colorexpand_transp[16][4] = {
555     ROP2(cirrus_colorexpand_transp_0),
556     ROP2(cirrus_colorexpand_transp_src_and_dst),
557     ROP_NOP2(cirrus_bitblt_rop_nop),
558     ROP2(cirrus_colorexpand_transp_src_and_notdst),
559     ROP2(cirrus_colorexpand_transp_notdst),
560     ROP2(cirrus_colorexpand_transp_src),
561     ROP2(cirrus_colorexpand_transp_1),
562     ROP2(cirrus_colorexpand_transp_notsrc_and_dst),
563     ROP2(cirrus_colorexpand_transp_src_xor_dst),
564     ROP2(cirrus_colorexpand_transp_src_or_dst),
565     ROP2(cirrus_colorexpand_transp_notsrc_or_notdst),
566     ROP2(cirrus_colorexpand_transp_src_notxor_dst),
567     ROP2(cirrus_colorexpand_transp_src_or_notdst),
568     ROP2(cirrus_colorexpand_transp_notsrc),
569     ROP2(cirrus_colorexpand_transp_notsrc_or_dst),
570     ROP2(cirrus_colorexpand_transp_notsrc_and_notdst),
571 };
572
573 static const cirrus_bitblt_rop_t cirrus_colorexpand[16][4] = {
574     ROP2(cirrus_colorexpand_0),
575     ROP2(cirrus_colorexpand_src_and_dst),
576     ROP_NOP2(cirrus_bitblt_rop_nop),
577     ROP2(cirrus_colorexpand_src_and_notdst),
578     ROP2(cirrus_colorexpand_notdst),
579     ROP2(cirrus_colorexpand_src),
580     ROP2(cirrus_colorexpand_1),
581     ROP2(cirrus_colorexpand_notsrc_and_dst),
582     ROP2(cirrus_colorexpand_src_xor_dst),
583     ROP2(cirrus_colorexpand_src_or_dst),
584     ROP2(cirrus_colorexpand_notsrc_or_notdst),
585     ROP2(cirrus_colorexpand_src_notxor_dst),
586     ROP2(cirrus_colorexpand_src_or_notdst),
587     ROP2(cirrus_colorexpand_notsrc),
588     ROP2(cirrus_colorexpand_notsrc_or_dst),
589     ROP2(cirrus_colorexpand_notsrc_and_notdst),
590 };
591
592 static const cirrus_bitblt_rop_t cirrus_colorexpand_pattern_transp[16][4] = {
593     ROP2(cirrus_colorexpand_pattern_transp_0),
594     ROP2(cirrus_colorexpand_pattern_transp_src_and_dst),
595     ROP_NOP2(cirrus_bitblt_rop_nop),
596     ROP2(cirrus_colorexpand_pattern_transp_src_and_notdst),
597     ROP2(cirrus_colorexpand_pattern_transp_notdst),
598     ROP2(cirrus_colorexpand_pattern_transp_src),
599     ROP2(cirrus_colorexpand_pattern_transp_1),
600     ROP2(cirrus_colorexpand_pattern_transp_notsrc_and_dst),
601     ROP2(cirrus_colorexpand_pattern_transp_src_xor_dst),
602     ROP2(cirrus_colorexpand_pattern_transp_src_or_dst),
603     ROP2(cirrus_colorexpand_pattern_transp_notsrc_or_notdst),
604     ROP2(cirrus_colorexpand_pattern_transp_src_notxor_dst),
605     ROP2(cirrus_colorexpand_pattern_transp_src_or_notdst),
606     ROP2(cirrus_colorexpand_pattern_transp_notsrc),
607     ROP2(cirrus_colorexpand_pattern_transp_notsrc_or_dst),
608     ROP2(cirrus_colorexpand_pattern_transp_notsrc_and_notdst),
609 };
610
611 static const cirrus_bitblt_rop_t cirrus_colorexpand_pattern[16][4] = {
612     ROP2(cirrus_colorexpand_pattern_0),
613     ROP2(cirrus_colorexpand_pattern_src_and_dst),
614     ROP_NOP2(cirrus_bitblt_rop_nop),
615     ROP2(cirrus_colorexpand_pattern_src_and_notdst),
616     ROP2(cirrus_colorexpand_pattern_notdst),
617     ROP2(cirrus_colorexpand_pattern_src),
618     ROP2(cirrus_colorexpand_pattern_1),
619     ROP2(cirrus_colorexpand_pattern_notsrc_and_dst),
620     ROP2(cirrus_colorexpand_pattern_src_xor_dst),
621     ROP2(cirrus_colorexpand_pattern_src_or_dst),
622     ROP2(cirrus_colorexpand_pattern_notsrc_or_notdst),
623     ROP2(cirrus_colorexpand_pattern_src_notxor_dst),
624     ROP2(cirrus_colorexpand_pattern_src_or_notdst),
625     ROP2(cirrus_colorexpand_pattern_notsrc),
626     ROP2(cirrus_colorexpand_pattern_notsrc_or_dst),
627     ROP2(cirrus_colorexpand_pattern_notsrc_and_notdst),
628 };
629
630 static const cirrus_fill_t cirrus_fill[16][4] = {
631     ROP2(cirrus_fill_0),
632     ROP2(cirrus_fill_src_and_dst),
633     ROP_NOP2(cirrus_bitblt_fill_nop),
634     ROP2(cirrus_fill_src_and_notdst),
635     ROP2(cirrus_fill_notdst),
636     ROP2(cirrus_fill_src),
637     ROP2(cirrus_fill_1),
638     ROP2(cirrus_fill_notsrc_and_dst),
639     ROP2(cirrus_fill_src_xor_dst),
640     ROP2(cirrus_fill_src_or_dst),
641     ROP2(cirrus_fill_notsrc_or_notdst),
642     ROP2(cirrus_fill_src_notxor_dst),
643     ROP2(cirrus_fill_src_or_notdst),
644     ROP2(cirrus_fill_notsrc),
645     ROP2(cirrus_fill_notsrc_or_dst),
646     ROP2(cirrus_fill_notsrc_and_notdst),
647 };
648
649 static inline void cirrus_bitblt_fgcol(CirrusVGAState *s)
650 {
651     unsigned int color;
652     switch (s->cirrus_blt_pixelwidth) {
653     case 1:
654         s->cirrus_blt_fgcol = s->cirrus_shadow_gr1;
655         break;
656     case 2:
657         color = s->cirrus_shadow_gr1 | (s->vga.gr[0x11] << 8);
658         s->cirrus_blt_fgcol = le16_to_cpu(color);
659         break;
660     case 3:
661         s->cirrus_blt_fgcol = s->cirrus_shadow_gr1 |
662             (s->vga.gr[0x11] << 8) | (s->vga.gr[0x13] << 16);
663         break;
664     default:
665     case 4:
666         color = s->cirrus_shadow_gr1 | (s->vga.gr[0x11] << 8) |
667             (s->vga.gr[0x13] << 16) | (s->vga.gr[0x15] << 24);
668         s->cirrus_blt_fgcol = le32_to_cpu(color);
669         break;
670     }
671 }
672
673 static inline void cirrus_bitblt_bgcol(CirrusVGAState *s)
674 {
675     unsigned int color;
676     switch (s->cirrus_blt_pixelwidth) {
677     case 1:
678         s->cirrus_blt_bgcol = s->cirrus_shadow_gr0;
679         break;
680     case 2:
681         color = s->cirrus_shadow_gr0 | (s->vga.gr[0x10] << 8);
682         s->cirrus_blt_bgcol = le16_to_cpu(color);
683         break;
684     case 3:
685         s->cirrus_blt_bgcol = s->cirrus_shadow_gr0 |
686             (s->vga.gr[0x10] << 8) | (s->vga.gr[0x12] << 16);
687         break;
688     default:
689     case 4:
690         color = s->cirrus_shadow_gr0 | (s->vga.gr[0x10] << 8) |
691             (s->vga.gr[0x12] << 16) | (s->vga.gr[0x14] << 24);
692         s->cirrus_blt_bgcol = le32_to_cpu(color);
693         break;
694     }
695 }
696
697 static void cirrus_invalidate_region(CirrusVGAState * s, int off_begin,
698                                      int off_pitch, int bytesperline,
699                                      int lines)
700 {
701     int y;
702     int off_cur;
703     int off_cur_end;
704
705     if (off_pitch < 0) {
706         off_begin -= bytesperline - 1;
707     }
708
709     for (y = 0; y < lines; y++) {
710         off_cur = off_begin;
711         off_cur_end = ((off_cur + bytesperline - 1) & s->cirrus_addr_mask) + 1;
712         assert(off_cur_end >= off_cur);
713         memory_region_set_dirty(&s->vga.vram, off_cur, off_cur_end - off_cur);
714         off_begin += off_pitch;
715     }
716 }
717
718 static int cirrus_bitblt_common_patterncopy(CirrusVGAState *s)
719 {
720     uint32_t patternsize;
721     bool videosrc = !s->cirrus_srccounter;
722
723     if (videosrc) {
724         switch (s->vga.get_bpp(&s->vga)) {
725         case 8:
726             patternsize = 64;
727             break;
728         case 15:
729         case 16:
730             patternsize = 128;
731             break;
732         case 24:
733         case 32:
734         default:
735             patternsize = 256;
736             break;
737         }
738         s->cirrus_blt_srcaddr &= ~(patternsize - 1);
739         if (s->cirrus_blt_srcaddr + patternsize > s->vga.vram_size) {
740             return 0;
741         }
742     }
743
744     if (blit_is_unsafe(s, true)) {
745         return 0;
746     }
747
748     (*s->cirrus_rop) (s, s->cirrus_blt_dstaddr,
749                       videosrc ? s->cirrus_blt_srcaddr : 0,
750                       s->cirrus_blt_dstpitch, 0,
751                       s->cirrus_blt_width, s->cirrus_blt_height);
752     cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
753                              s->cirrus_blt_dstpitch, s->cirrus_blt_width,
754                              s->cirrus_blt_height);
755     return 1;
756 }
757
758 /* fill */
759
760 static int cirrus_bitblt_solidfill(CirrusVGAState *s, int blt_rop)
761 {
762     cirrus_fill_t rop_func;
763
764     if (blit_is_unsafe(s, true)) {
765         return 0;
766     }
767     rop_func = cirrus_fill[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
768     rop_func(s, s->cirrus_blt_dstaddr,
769              s->cirrus_blt_dstpitch,
770              s->cirrus_blt_width, s->cirrus_blt_height);
771     cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
772                              s->cirrus_blt_dstpitch, s->cirrus_blt_width,
773                              s->cirrus_blt_height);
774     cirrus_bitblt_reset(s);
775     return 1;
776 }
777
778 /***************************************
779  *
780  *  bitblt (video-to-video)
781  *
782  ***************************************/
783
784 static int cirrus_bitblt_videotovideo_patterncopy(CirrusVGAState * s)
785 {
786     return cirrus_bitblt_common_patterncopy(s);
787 }
788
789 static int cirrus_do_copy(CirrusVGAState *s, int dst, int src, int w, int h)
790 {
791     int sx = 0, sy = 0;
792     int dx = 0, dy = 0;
793     int depth = 0;
794     int notify = 0;
795
796     /* make sure to only copy if it's a plain copy ROP */
797     if (*s->cirrus_rop == cirrus_bitblt_rop_fwd_src ||
798         *s->cirrus_rop == cirrus_bitblt_rop_bkwd_src) {
799
800         int width, height;
801
802         depth = s->vga.get_bpp(&s->vga) / 8;
803         if (!depth) {
804             return 0;
805         }
806         s->vga.get_resolution(&s->vga, &width, &height);
807
808         /* extra x, y */
809         sx = (src % ABS(s->cirrus_blt_srcpitch)) / depth;
810         sy = (src / ABS(s->cirrus_blt_srcpitch));
811         dx = (dst % ABS(s->cirrus_blt_dstpitch)) / depth;
812         dy = (dst / ABS(s->cirrus_blt_dstpitch));
813
814         /* normalize width */
815         w /= depth;
816
817         /* if we're doing a backward copy, we have to adjust
818            our x/y to be the upper left corner (instead of the lower
819            right corner) */
820         if (s->cirrus_blt_dstpitch < 0) {
821             sx -= (s->cirrus_blt_width / depth) - 1;
822             dx -= (s->cirrus_blt_width / depth) - 1;
823             sy -= s->cirrus_blt_height - 1;
824             dy -= s->cirrus_blt_height - 1;
825         }
826
827         /* are we in the visible portion of memory? */
828         if (sx >= 0 && sy >= 0 && dx >= 0 && dy >= 0 &&
829             (sx + w) <= width && (sy + h) <= height &&
830             (dx + w) <= width && (dy + h) <= height) {
831             notify = 1;
832         }
833     }
834
835     (*s->cirrus_rop) (s, s->cirrus_blt_dstaddr,
836                       s->cirrus_blt_srcaddr,
837                       s->cirrus_blt_dstpitch, s->cirrus_blt_srcpitch,
838                       s->cirrus_blt_width, s->cirrus_blt_height);
839
840     if (notify) {
841         dpy_gfx_update(s->vga.con, dx, dy,
842                        s->cirrus_blt_width / depth,
843                        s->cirrus_blt_height);
844     }
845
846     /* we don't have to notify the display that this portion has
847        changed since qemu_console_copy implies this */
848
849     cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
850                                 s->cirrus_blt_dstpitch, s->cirrus_blt_width,
851                                 s->cirrus_blt_height);
852
853     return 1;
854 }
855
856 static int cirrus_bitblt_videotovideo_copy(CirrusVGAState * s)
857 {
858     if (blit_is_unsafe(s, false))
859         return 0;
860
861     return cirrus_do_copy(s, s->cirrus_blt_dstaddr - s->vga.start_addr,
862             s->cirrus_blt_srcaddr - s->vga.start_addr,
863             s->cirrus_blt_width, s->cirrus_blt_height);
864 }
865
866 /***************************************
867  *
868  *  bitblt (cpu-to-video)
869  *
870  ***************************************/
871
872 static void cirrus_bitblt_cputovideo_next(CirrusVGAState * s)
873 {
874     int copy_count;
875     uint8_t *end_ptr;
876
877     if (s->cirrus_srccounter > 0) {
878         if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
879             cirrus_bitblt_common_patterncopy(s);
880         the_end:
881             s->cirrus_srccounter = 0;
882             cirrus_bitblt_reset(s);
883         } else {
884             /* at least one scan line */
885             do {
886                 (*s->cirrus_rop)(s, s->cirrus_blt_dstaddr,
887                                  0, 0, 0, s->cirrus_blt_width, 1);
888                 cirrus_invalidate_region(s, s->cirrus_blt_dstaddr, 0,
889                                          s->cirrus_blt_width, 1);
890                 s->cirrus_blt_dstaddr += s->cirrus_blt_dstpitch;
891                 s->cirrus_srccounter -= s->cirrus_blt_srcpitch;
892                 if (s->cirrus_srccounter <= 0)
893                     goto the_end;
894                 /* more bytes than needed can be transferred because of
895                    word alignment, so we keep them for the next line */
896                 /* XXX: keep alignment to speed up transfer */
897                 end_ptr = s->cirrus_bltbuf + s->cirrus_blt_srcpitch;
898                 copy_count = s->cirrus_srcptr_end - end_ptr;
899                 memmove(s->cirrus_bltbuf, end_ptr, copy_count);
900                 s->cirrus_srcptr = s->cirrus_bltbuf + copy_count;
901                 s->cirrus_srcptr_end = s->cirrus_bltbuf + s->cirrus_blt_srcpitch;
902             } while (s->cirrus_srcptr >= s->cirrus_srcptr_end);
903         }
904     }
905 }
906
907 /***************************************
908  *
909  *  bitblt wrapper
910  *
911  ***************************************/
912
913 static void cirrus_bitblt_reset(CirrusVGAState * s)
914 {
915     int need_update;
916
917     s->vga.gr[0x31] &=
918         ~(CIRRUS_BLT_START | CIRRUS_BLT_BUSY | CIRRUS_BLT_FIFOUSED);
919     need_update = s->cirrus_srcptr != &s->cirrus_bltbuf[0]
920         || s->cirrus_srcptr_end != &s->cirrus_bltbuf[0];
921     s->cirrus_srcptr = &s->cirrus_bltbuf[0];
922     s->cirrus_srcptr_end = &s->cirrus_bltbuf[0];
923     s->cirrus_srccounter = 0;
924     if (!need_update)
925         return;
926     cirrus_update_memory_access(s);
927 }
928
929 static int cirrus_bitblt_cputovideo(CirrusVGAState * s)
930 {
931     int w;
932
933     if (blit_is_unsafe(s, true)) {
934         return 0;
935     }
936
937     s->cirrus_blt_mode &= ~CIRRUS_BLTMODE_MEMSYSSRC;
938     s->cirrus_srcptr = &s->cirrus_bltbuf[0];
939     s->cirrus_srcptr_end = &s->cirrus_bltbuf[0];
940
941     if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
942         if (s->cirrus_blt_mode & CIRRUS_BLTMODE_COLOREXPAND) {
943             s->cirrus_blt_srcpitch = 8;
944         } else {
945             /* XXX: check for 24 bpp */
946             s->cirrus_blt_srcpitch = 8 * 8 * s->cirrus_blt_pixelwidth;
947         }
948         s->cirrus_srccounter = s->cirrus_blt_srcpitch;
949     } else {
950         if (s->cirrus_blt_mode & CIRRUS_BLTMODE_COLOREXPAND) {
951             w = s->cirrus_blt_width / s->cirrus_blt_pixelwidth;
952             if (s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_DWORDGRANULARITY)
953                 s->cirrus_blt_srcpitch = ((w + 31) >> 5);
954             else
955                 s->cirrus_blt_srcpitch = ((w + 7) >> 3);
956         } else {
957             /* always align input size to 32 bits */
958             s->cirrus_blt_srcpitch = (s->cirrus_blt_width + 3) & ~3;
959         }
960         s->cirrus_srccounter = s->cirrus_blt_srcpitch * s->cirrus_blt_height;
961     }
962
963     /* the blit_is_unsafe call above should catch this */
964     assert(s->cirrus_blt_srcpitch <= CIRRUS_BLTBUFSIZE);
965
966     s->cirrus_srcptr = s->cirrus_bltbuf;
967     s->cirrus_srcptr_end = s->cirrus_bltbuf + s->cirrus_blt_srcpitch;
968     cirrus_update_memory_access(s);
969     return 1;
970 }
971
972 static int cirrus_bitblt_videotocpu(CirrusVGAState * s)
973 {
974     /* XXX */
975 #ifdef DEBUG_BITBLT
976     printf("cirrus: bitblt (video to cpu) is not implemented yet\n");
977 #endif
978     return 0;
979 }
980
981 static int cirrus_bitblt_videotovideo(CirrusVGAState * s)
982 {
983     int ret;
984
985     if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
986         ret = cirrus_bitblt_videotovideo_patterncopy(s);
987     } else {
988         ret = cirrus_bitblt_videotovideo_copy(s);
989     }
990     if (ret)
991         cirrus_bitblt_reset(s);
992     return ret;
993 }
994
995 static void cirrus_bitblt_start(CirrusVGAState * s)
996 {
997     uint8_t blt_rop;
998
999     if (!s->enable_blitter) {
1000         goto bitblt_ignore;
1001     }
1002
1003     s->vga.gr[0x31] |= CIRRUS_BLT_BUSY;
1004
1005     s->cirrus_blt_width = (s->vga.gr[0x20] | (s->vga.gr[0x21] << 8)) + 1;
1006     s->cirrus_blt_height = (s->vga.gr[0x22] | (s->vga.gr[0x23] << 8)) + 1;
1007     s->cirrus_blt_dstpitch = (s->vga.gr[0x24] | (s->vga.gr[0x25] << 8));
1008     s->cirrus_blt_srcpitch = (s->vga.gr[0x26] | (s->vga.gr[0x27] << 8));
1009     s->cirrus_blt_dstaddr =
1010         (s->vga.gr[0x28] | (s->vga.gr[0x29] << 8) | (s->vga.gr[0x2a] << 16));
1011     s->cirrus_blt_srcaddr =
1012         (s->vga.gr[0x2c] | (s->vga.gr[0x2d] << 8) | (s->vga.gr[0x2e] << 16));
1013     s->cirrus_blt_mode = s->vga.gr[0x30];
1014     s->cirrus_blt_modeext = s->vga.gr[0x33];
1015     blt_rop = s->vga.gr[0x32];
1016
1017     s->cirrus_blt_dstaddr &= s->cirrus_addr_mask;
1018     s->cirrus_blt_srcaddr &= s->cirrus_addr_mask;
1019
1020 #ifdef DEBUG_BITBLT
1021     printf("rop=0x%02x mode=0x%02x modeext=0x%02x w=%d h=%d dpitch=%d spitch=%d daddr=0x%08x saddr=0x%08x writemask=0x%02x\n",
1022            blt_rop,
1023            s->cirrus_blt_mode,
1024            s->cirrus_blt_modeext,
1025            s->cirrus_blt_width,
1026            s->cirrus_blt_height,
1027            s->cirrus_blt_dstpitch,
1028            s->cirrus_blt_srcpitch,
1029            s->cirrus_blt_dstaddr,
1030            s->cirrus_blt_srcaddr,
1031            s->vga.gr[0x2f]);
1032 #endif
1033
1034     switch (s->cirrus_blt_mode & CIRRUS_BLTMODE_PIXELWIDTHMASK) {
1035     case CIRRUS_BLTMODE_PIXELWIDTH8:
1036         s->cirrus_blt_pixelwidth = 1;
1037         break;
1038     case CIRRUS_BLTMODE_PIXELWIDTH16:
1039         s->cirrus_blt_pixelwidth = 2;
1040         break;
1041     case CIRRUS_BLTMODE_PIXELWIDTH24:
1042         s->cirrus_blt_pixelwidth = 3;
1043         break;
1044     case CIRRUS_BLTMODE_PIXELWIDTH32:
1045         s->cirrus_blt_pixelwidth = 4;
1046         break;
1047     default:
1048 #ifdef DEBUG_BITBLT
1049         printf("cirrus: bitblt - pixel width is unknown\n");
1050 #endif
1051         goto bitblt_ignore;
1052     }
1053     s->cirrus_blt_mode &= ~CIRRUS_BLTMODE_PIXELWIDTHMASK;
1054
1055     if ((s->
1056          cirrus_blt_mode & (CIRRUS_BLTMODE_MEMSYSSRC |
1057                             CIRRUS_BLTMODE_MEMSYSDEST))
1058         == (CIRRUS_BLTMODE_MEMSYSSRC | CIRRUS_BLTMODE_MEMSYSDEST)) {
1059 #ifdef DEBUG_BITBLT
1060         printf("cirrus: bitblt - memory-to-memory copy is requested\n");
1061 #endif
1062         goto bitblt_ignore;
1063     }
1064
1065     if ((s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_SOLIDFILL) &&
1066         (s->cirrus_blt_mode & (CIRRUS_BLTMODE_MEMSYSDEST |
1067                                CIRRUS_BLTMODE_TRANSPARENTCOMP |
1068                                CIRRUS_BLTMODE_PATTERNCOPY |
1069                                CIRRUS_BLTMODE_COLOREXPAND)) ==
1070          (CIRRUS_BLTMODE_PATTERNCOPY | CIRRUS_BLTMODE_COLOREXPAND)) {
1071         cirrus_bitblt_fgcol(s);
1072         cirrus_bitblt_solidfill(s, blt_rop);
1073     } else {
1074         if ((s->cirrus_blt_mode & (CIRRUS_BLTMODE_COLOREXPAND |
1075                                    CIRRUS_BLTMODE_PATTERNCOPY)) ==
1076             CIRRUS_BLTMODE_COLOREXPAND) {
1077
1078             if (s->cirrus_blt_mode & CIRRUS_BLTMODE_TRANSPARENTCOMP) {
1079                 if (s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_COLOREXPINV)
1080                     cirrus_bitblt_bgcol(s);
1081                 else
1082                     cirrus_bitblt_fgcol(s);
1083                 s->cirrus_rop = cirrus_colorexpand_transp[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1084             } else {
1085                 cirrus_bitblt_fgcol(s);
1086                 cirrus_bitblt_bgcol(s);
1087                 s->cirrus_rop = cirrus_colorexpand[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1088             }
1089         } else if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
1090             if (s->cirrus_blt_mode & CIRRUS_BLTMODE_COLOREXPAND) {
1091                 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_TRANSPARENTCOMP) {
1092                     if (s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_COLOREXPINV)
1093                         cirrus_bitblt_bgcol(s);
1094                     else
1095                         cirrus_bitblt_fgcol(s);
1096                     s->cirrus_rop = cirrus_colorexpand_pattern_transp[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1097                 } else {
1098                     cirrus_bitblt_fgcol(s);
1099                     cirrus_bitblt_bgcol(s);
1100                     s->cirrus_rop = cirrus_colorexpand_pattern[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1101                 }
1102             } else {
1103                 s->cirrus_rop = cirrus_patternfill[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1104             }
1105         } else {
1106             if (s->cirrus_blt_mode & CIRRUS_BLTMODE_TRANSPARENTCOMP) {
1107                 if (s->cirrus_blt_pixelwidth > 2) {
1108                     printf("src transparent without colorexpand must be 8bpp or 16bpp\n");
1109                     goto bitblt_ignore;
1110                 }
1111                 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_BACKWARDS) {
1112                     s->cirrus_blt_dstpitch = -s->cirrus_blt_dstpitch;
1113                     s->cirrus_blt_srcpitch = -s->cirrus_blt_srcpitch;
1114                     s->cirrus_rop = cirrus_bkwd_transp_rop[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1115                 } else {
1116                     s->cirrus_rop = cirrus_fwd_transp_rop[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1117                 }
1118             } else {
1119                 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_BACKWARDS) {
1120                     s->cirrus_blt_dstpitch = -s->cirrus_blt_dstpitch;
1121                     s->cirrus_blt_srcpitch = -s->cirrus_blt_srcpitch;
1122                     s->cirrus_rop = cirrus_bkwd_rop[rop_to_index[blt_rop]];
1123                 } else {
1124                     s->cirrus_rop = cirrus_fwd_rop[rop_to_index[blt_rop]];
1125                 }
1126             }
1127         }
1128         // setup bitblt engine.
1129         if (s->cirrus_blt_mode & CIRRUS_BLTMODE_MEMSYSSRC) {
1130             if (!cirrus_bitblt_cputovideo(s))
1131                 goto bitblt_ignore;
1132         } else if (s->cirrus_blt_mode & CIRRUS_BLTMODE_MEMSYSDEST) {
1133             if (!cirrus_bitblt_videotocpu(s))
1134                 goto bitblt_ignore;
1135         } else {
1136             if (!cirrus_bitblt_videotovideo(s))
1137                 goto bitblt_ignore;
1138         }
1139     }
1140     return;
1141   bitblt_ignore:;
1142     cirrus_bitblt_reset(s);
1143 }
1144
1145 static void cirrus_write_bitblt(CirrusVGAState * s, unsigned reg_value)
1146 {
1147     unsigned old_value;
1148
1149     old_value = s->vga.gr[0x31];
1150     s->vga.gr[0x31] = reg_value;
1151
1152     if (((old_value & CIRRUS_BLT_RESET) != 0) &&
1153         ((reg_value & CIRRUS_BLT_RESET) == 0)) {
1154         cirrus_bitblt_reset(s);
1155     } else if (((old_value & CIRRUS_BLT_START) == 0) &&
1156                ((reg_value & CIRRUS_BLT_START) != 0)) {
1157         cirrus_bitblt_start(s);
1158     }
1159 }
1160
1161
1162 /***************************************
1163  *
1164  *  basic parameters
1165  *
1166  ***************************************/
1167
1168 static void cirrus_get_offsets(VGACommonState *s1,
1169                                uint32_t *pline_offset,
1170                                uint32_t *pstart_addr,
1171                                uint32_t *pline_compare)
1172 {
1173     CirrusVGAState * s = container_of(s1, CirrusVGAState, vga);
1174     uint32_t start_addr, line_offset, line_compare;
1175
1176     line_offset = s->vga.cr[0x13]
1177         | ((s->vga.cr[0x1b] & 0x10) << 4);
1178     line_offset <<= 3;
1179     *pline_offset = line_offset;
1180
1181     start_addr = (s->vga.cr[0x0c] << 8)
1182         | s->vga.cr[0x0d]
1183         | ((s->vga.cr[0x1b] & 0x01) << 16)
1184         | ((s->vga.cr[0x1b] & 0x0c) << 15)
1185         | ((s->vga.cr[0x1d] & 0x80) << 12);
1186     *pstart_addr = start_addr;
1187
1188     line_compare = s->vga.cr[0x18] |
1189         ((s->vga.cr[0x07] & 0x10) << 4) |
1190         ((s->vga.cr[0x09] & 0x40) << 3);
1191     *pline_compare = line_compare;
1192 }
1193
1194 static uint32_t cirrus_get_bpp16_depth(CirrusVGAState * s)
1195 {
1196     uint32_t ret = 16;
1197
1198     switch (s->cirrus_hidden_dac_data & 0xf) {
1199     case 0:
1200         ret = 15;
1201         break;                  /* Sierra HiColor */
1202     case 1:
1203         ret = 16;
1204         break;                  /* XGA HiColor */
1205     default:
1206 #ifdef DEBUG_CIRRUS
1207         printf("cirrus: invalid DAC value %x in 16bpp\n",
1208                (s->cirrus_hidden_dac_data & 0xf));
1209 #endif
1210         ret = 15;               /* XXX */
1211         break;
1212     }
1213     return ret;
1214 }
1215
1216 static int cirrus_get_bpp(VGACommonState *s1)
1217 {
1218     CirrusVGAState * s = container_of(s1, CirrusVGAState, vga);
1219     uint32_t ret = 8;
1220
1221     if ((s->vga.sr[0x07] & 0x01) != 0) {
1222         /* Cirrus SVGA */
1223         switch (s->vga.sr[0x07] & CIRRUS_SR7_BPP_MASK) {
1224         case CIRRUS_SR7_BPP_8:
1225             ret = 8;
1226             break;
1227         case CIRRUS_SR7_BPP_16_DOUBLEVCLK:
1228             ret = cirrus_get_bpp16_depth(s);
1229             break;
1230         case CIRRUS_SR7_BPP_24:
1231             ret = 24;
1232             break;
1233         case CIRRUS_SR7_BPP_16:
1234             ret = cirrus_get_bpp16_depth(s);
1235             break;
1236         case CIRRUS_SR7_BPP_32:
1237             ret = 32;
1238             break;
1239         default:
1240 #ifdef DEBUG_CIRRUS
1241             printf("cirrus: unknown bpp - sr7=%x\n", s->vga.sr[0x7]);
1242 #endif
1243             ret = 8;
1244             break;
1245         }
1246     } else {
1247         /* VGA */
1248         ret = 0;
1249     }
1250
1251     return ret;
1252 }
1253
1254 static void cirrus_get_resolution(VGACommonState *s, int *pwidth, int *pheight)
1255 {
1256     int width, height;
1257
1258     width = (s->cr[0x01] + 1) * 8;
1259     height = s->cr[0x12] |
1260         ((s->cr[0x07] & 0x02) << 7) |
1261         ((s->cr[0x07] & 0x40) << 3);
1262     height = (height + 1);
1263     /* interlace support */
1264     if (s->cr[0x1a] & 0x01)
1265         height = height * 2;
1266     *pwidth = width;
1267     *pheight = height;
1268 }
1269
1270 /***************************************
1271  *
1272  * bank memory
1273  *
1274  ***************************************/
1275
1276 static void cirrus_update_bank_ptr(CirrusVGAState * s, unsigned bank_index)
1277 {
1278     unsigned offset;
1279     unsigned limit;
1280
1281     if ((s->vga.gr[0x0b] & 0x01) != 0)  /* dual bank */
1282         offset = s->vga.gr[0x09 + bank_index];
1283     else                        /* single bank */
1284         offset = s->vga.gr[0x09];
1285
1286     if ((s->vga.gr[0x0b] & 0x20) != 0)
1287         offset <<= 14;
1288     else
1289         offset <<= 12;
1290
1291     if (s->real_vram_size <= offset)
1292         limit = 0;
1293     else
1294         limit = s->real_vram_size - offset;
1295
1296     if (((s->vga.gr[0x0b] & 0x01) == 0) && (bank_index != 0)) {
1297         if (limit > 0x8000) {
1298             offset += 0x8000;
1299             limit -= 0x8000;
1300         } else {
1301             limit = 0;
1302         }
1303     }
1304
1305     if (limit > 0) {
1306         s->cirrus_bank_base[bank_index] = offset;
1307         s->cirrus_bank_limit[bank_index] = limit;
1308     } else {
1309         s->cirrus_bank_base[bank_index] = 0;
1310         s->cirrus_bank_limit[bank_index] = 0;
1311     }
1312 }
1313
1314 /***************************************
1315  *
1316  *  I/O access between 0x3c4-0x3c5
1317  *
1318  ***************************************/
1319
1320 static int cirrus_vga_read_sr(CirrusVGAState * s)
1321 {
1322     switch (s->vga.sr_index) {
1323     case 0x00:                  // Standard VGA
1324     case 0x01:                  // Standard VGA
1325     case 0x02:                  // Standard VGA
1326     case 0x03:                  // Standard VGA
1327     case 0x04:                  // Standard VGA
1328         return s->vga.sr[s->vga.sr_index];
1329     case 0x06:                  // Unlock Cirrus extensions
1330         return s->vga.sr[s->vga.sr_index];
1331     case 0x10:
1332     case 0x30:
1333     case 0x50:
1334     case 0x70:                  // Graphics Cursor X
1335     case 0x90:
1336     case 0xb0:
1337     case 0xd0:
1338     case 0xf0:                  // Graphics Cursor X
1339         return s->vga.sr[0x10];
1340     case 0x11:
1341     case 0x31:
1342     case 0x51:
1343     case 0x71:                  // Graphics Cursor Y
1344     case 0x91:
1345     case 0xb1:
1346     case 0xd1:
1347     case 0xf1:                  // Graphics Cursor Y
1348         return s->vga.sr[0x11];
1349     case 0x05:                  // ???
1350     case 0x07:                  // Extended Sequencer Mode
1351     case 0x08:                  // EEPROM Control
1352     case 0x09:                  // Scratch Register 0
1353     case 0x0a:                  // Scratch Register 1
1354     case 0x0b:                  // VCLK 0
1355     case 0x0c:                  // VCLK 1
1356     case 0x0d:                  // VCLK 2
1357     case 0x0e:                  // VCLK 3
1358     case 0x0f:                  // DRAM Control
1359     case 0x12:                  // Graphics Cursor Attribute
1360     case 0x13:                  // Graphics Cursor Pattern Address
1361     case 0x14:                  // Scratch Register 2
1362     case 0x15:                  // Scratch Register 3
1363     case 0x16:                  // Performance Tuning Register
1364     case 0x17:                  // Configuration Readback and Extended Control
1365     case 0x18:                  // Signature Generator Control
1366     case 0x19:                  // Signal Generator Result
1367     case 0x1a:                  // Signal Generator Result
1368     case 0x1b:                  // VCLK 0 Denominator & Post
1369     case 0x1c:                  // VCLK 1 Denominator & Post
1370     case 0x1d:                  // VCLK 2 Denominator & Post
1371     case 0x1e:                  // VCLK 3 Denominator & Post
1372     case 0x1f:                  // BIOS Write Enable and MCLK select
1373 #ifdef DEBUG_CIRRUS
1374         printf("cirrus: handled inport sr_index %02x\n", s->vga.sr_index);
1375 #endif
1376         return s->vga.sr[s->vga.sr_index];
1377     default:
1378 #ifdef DEBUG_CIRRUS
1379         printf("cirrus: inport sr_index %02x\n", s->vga.sr_index);
1380 #endif
1381         return 0xff;
1382         break;
1383     }
1384 }
1385
1386 static void cirrus_vga_write_sr(CirrusVGAState * s, uint32_t val)
1387 {
1388     switch (s->vga.sr_index) {
1389     case 0x00:                  // Standard VGA
1390     case 0x01:                  // Standard VGA
1391     case 0x02:                  // Standard VGA
1392     case 0x03:                  // Standard VGA
1393     case 0x04:                  // Standard VGA
1394         s->vga.sr[s->vga.sr_index] = val & sr_mask[s->vga.sr_index];
1395         if (s->vga.sr_index == 1)
1396             s->vga.update_retrace_info(&s->vga);
1397         break;
1398     case 0x06:                  // Unlock Cirrus extensions
1399         val &= 0x17;
1400         if (val == 0x12) {
1401             s->vga.sr[s->vga.sr_index] = 0x12;
1402         } else {
1403             s->vga.sr[s->vga.sr_index] = 0x0f;
1404         }
1405         break;
1406     case 0x10:
1407     case 0x30:
1408     case 0x50:
1409     case 0x70:                  // Graphics Cursor X
1410     case 0x90:
1411     case 0xb0:
1412     case 0xd0:
1413     case 0xf0:                  // Graphics Cursor X
1414         s->vga.sr[0x10] = val;
1415         s->vga.hw_cursor_x = (val << 3) | (s->vga.sr_index >> 5);
1416         break;
1417     case 0x11:
1418     case 0x31:
1419     case 0x51:
1420     case 0x71:                  // Graphics Cursor Y
1421     case 0x91:
1422     case 0xb1:
1423     case 0xd1:
1424     case 0xf1:                  // Graphics Cursor Y
1425         s->vga.sr[0x11] = val;
1426         s->vga.hw_cursor_y = (val << 3) | (s->vga.sr_index >> 5);
1427         break;
1428     case 0x07:                  // Extended Sequencer Mode
1429         cirrus_update_memory_access(s);
1430         /* fall through */
1431     case 0x08:                  // EEPROM Control
1432     case 0x09:                  // Scratch Register 0
1433     case 0x0a:                  // Scratch Register 1
1434     case 0x0b:                  // VCLK 0
1435     case 0x0c:                  // VCLK 1
1436     case 0x0d:                  // VCLK 2
1437     case 0x0e:                  // VCLK 3
1438     case 0x0f:                  // DRAM Control
1439     case 0x13:                  // Graphics Cursor Pattern Address
1440     case 0x14:                  // Scratch Register 2
1441     case 0x15:                  // Scratch Register 3
1442     case 0x16:                  // Performance Tuning Register
1443     case 0x18:                  // Signature Generator Control
1444     case 0x19:                  // Signature Generator Result
1445     case 0x1a:                  // Signature Generator Result
1446     case 0x1b:                  // VCLK 0 Denominator & Post
1447     case 0x1c:                  // VCLK 1 Denominator & Post
1448     case 0x1d:                  // VCLK 2 Denominator & Post
1449     case 0x1e:                  // VCLK 3 Denominator & Post
1450     case 0x1f:                  // BIOS Write Enable and MCLK select
1451         s->vga.sr[s->vga.sr_index] = val;
1452 #ifdef DEBUG_CIRRUS
1453         printf("cirrus: handled outport sr_index %02x, sr_value %02x\n",
1454                s->vga.sr_index, val);
1455 #endif
1456         break;
1457     case 0x12:                  // Graphics Cursor Attribute
1458         s->vga.sr[0x12] = val;
1459         s->vga.force_shadow = !!(val & CIRRUS_CURSOR_SHOW);
1460 #ifdef DEBUG_CIRRUS
1461         printf("cirrus: cursor ctl SR12=%02x (force shadow: %d)\n",
1462                val, s->vga.force_shadow);
1463 #endif
1464         break;
1465     case 0x17:                  // Configuration Readback and Extended Control
1466         s->vga.sr[s->vga.sr_index] = (s->vga.sr[s->vga.sr_index] & 0x38)
1467                                    | (val & 0xc7);
1468         cirrus_update_memory_access(s);
1469         break;
1470     default:
1471 #ifdef DEBUG_CIRRUS
1472         printf("cirrus: outport sr_index %02x, sr_value %02x\n",
1473                s->vga.sr_index, val);
1474 #endif
1475         break;
1476     }
1477 }
1478
1479 /***************************************
1480  *
1481  *  I/O access at 0x3c6
1482  *
1483  ***************************************/
1484
1485 static int cirrus_read_hidden_dac(CirrusVGAState * s)
1486 {
1487     if (++s->cirrus_hidden_dac_lockindex == 5) {
1488         s->cirrus_hidden_dac_lockindex = 0;
1489         return s->cirrus_hidden_dac_data;
1490     }
1491     return 0xff;
1492 }
1493
1494 static void cirrus_write_hidden_dac(CirrusVGAState * s, int reg_value)
1495 {
1496     if (s->cirrus_hidden_dac_lockindex == 4) {
1497         s->cirrus_hidden_dac_data = reg_value;
1498 #if defined(DEBUG_CIRRUS)
1499         printf("cirrus: outport hidden DAC, value %02x\n", reg_value);
1500 #endif
1501     }
1502     s->cirrus_hidden_dac_lockindex = 0;
1503 }
1504
1505 /***************************************
1506  *
1507  *  I/O access at 0x3c9
1508  *
1509  ***************************************/
1510
1511 static int cirrus_vga_read_palette(CirrusVGAState * s)
1512 {
1513     int val;
1514
1515     if ((s->vga.sr[0x12] & CIRRUS_CURSOR_HIDDENPEL)) {
1516         val = s->cirrus_hidden_palette[(s->vga.dac_read_index & 0x0f) * 3 +
1517                                        s->vga.dac_sub_index];
1518     } else {
1519         val = s->vga.palette[s->vga.dac_read_index * 3 + s->vga.dac_sub_index];
1520     }
1521     if (++s->vga.dac_sub_index == 3) {
1522         s->vga.dac_sub_index = 0;
1523         s->vga.dac_read_index++;
1524     }
1525     return val;
1526 }
1527
1528 static void cirrus_vga_write_palette(CirrusVGAState * s, int reg_value)
1529 {
1530     s->vga.dac_cache[s->vga.dac_sub_index] = reg_value;
1531     if (++s->vga.dac_sub_index == 3) {
1532         if ((s->vga.sr[0x12] & CIRRUS_CURSOR_HIDDENPEL)) {
1533             memcpy(&s->cirrus_hidden_palette[(s->vga.dac_write_index & 0x0f) * 3],
1534                    s->vga.dac_cache, 3);
1535         } else {
1536             memcpy(&s->vga.palette[s->vga.dac_write_index * 3], s->vga.dac_cache, 3);
1537         }
1538         /* XXX update cursor */
1539         s->vga.dac_sub_index = 0;
1540         s->vga.dac_write_index++;
1541     }
1542 }
1543
1544 /***************************************
1545  *
1546  *  I/O access between 0x3ce-0x3cf
1547  *
1548  ***************************************/
1549
1550 static int cirrus_vga_read_gr(CirrusVGAState * s, unsigned reg_index)
1551 {
1552     switch (reg_index) {
1553     case 0x00: // Standard VGA, BGCOLOR 0x000000ff
1554         return s->cirrus_shadow_gr0;
1555     case 0x01: // Standard VGA, FGCOLOR 0x000000ff
1556         return s->cirrus_shadow_gr1;
1557     case 0x02:                  // Standard VGA
1558     case 0x03:                  // Standard VGA
1559     case 0x04:                  // Standard VGA
1560     case 0x06:                  // Standard VGA
1561     case 0x07:                  // Standard VGA
1562     case 0x08:                  // Standard VGA
1563         return s->vga.gr[s->vga.gr_index];
1564     case 0x05:                  // Standard VGA, Cirrus extended mode
1565     default:
1566         break;
1567     }
1568
1569     if (reg_index < 0x3a) {
1570         return s->vga.gr[reg_index];
1571     } else {
1572 #ifdef DEBUG_CIRRUS
1573         printf("cirrus: inport gr_index %02x\n", reg_index);
1574 #endif
1575         return 0xff;
1576     }
1577 }
1578
1579 static void
1580 cirrus_vga_write_gr(CirrusVGAState * s, unsigned reg_index, int reg_value)
1581 {
1582 #if defined(DEBUG_BITBLT) && 0
1583     printf("gr%02x: %02x\n", reg_index, reg_value);
1584 #endif
1585     switch (reg_index) {
1586     case 0x00:                  // Standard VGA, BGCOLOR 0x000000ff
1587         s->vga.gr[reg_index] = reg_value & gr_mask[reg_index];
1588         s->cirrus_shadow_gr0 = reg_value;
1589         break;
1590     case 0x01:                  // Standard VGA, FGCOLOR 0x000000ff
1591         s->vga.gr[reg_index] = reg_value & gr_mask[reg_index];
1592         s->cirrus_shadow_gr1 = reg_value;
1593         break;
1594     case 0x02:                  // Standard VGA
1595     case 0x03:                  // Standard VGA
1596     case 0x04:                  // Standard VGA
1597     case 0x06:                  // Standard VGA
1598     case 0x07:                  // Standard VGA
1599     case 0x08:                  // Standard VGA
1600         s->vga.gr[reg_index] = reg_value & gr_mask[reg_index];
1601         break;
1602     case 0x05:                  // Standard VGA, Cirrus extended mode
1603         s->vga.gr[reg_index] = reg_value & 0x7f;
1604         cirrus_update_memory_access(s);
1605         break;
1606     case 0x09:                  // bank offset #0
1607     case 0x0A:                  // bank offset #1
1608         s->vga.gr[reg_index] = reg_value;
1609         cirrus_update_bank_ptr(s, 0);
1610         cirrus_update_bank_ptr(s, 1);
1611         cirrus_update_memory_access(s);
1612         break;
1613     case 0x0B:
1614         s->vga.gr[reg_index] = reg_value;
1615         cirrus_update_bank_ptr(s, 0);
1616         cirrus_update_bank_ptr(s, 1);
1617         cirrus_update_memory_access(s);
1618         break;
1619     case 0x10:                  // BGCOLOR 0x0000ff00
1620     case 0x11:                  // FGCOLOR 0x0000ff00
1621     case 0x12:                  // BGCOLOR 0x00ff0000
1622     case 0x13:                  // FGCOLOR 0x00ff0000
1623     case 0x14:                  // BGCOLOR 0xff000000
1624     case 0x15:                  // FGCOLOR 0xff000000
1625     case 0x20:                  // BLT WIDTH 0x0000ff
1626     case 0x22:                  // BLT HEIGHT 0x0000ff
1627     case 0x24:                  // BLT DEST PITCH 0x0000ff
1628     case 0x26:                  // BLT SRC PITCH 0x0000ff
1629     case 0x28:                  // BLT DEST ADDR 0x0000ff
1630     case 0x29:                  // BLT DEST ADDR 0x00ff00
1631     case 0x2c:                  // BLT SRC ADDR 0x0000ff
1632     case 0x2d:                  // BLT SRC ADDR 0x00ff00
1633     case 0x2f:                  // BLT WRITEMASK
1634     case 0x30:                  // BLT MODE
1635     case 0x32:                  // RASTER OP
1636     case 0x33:                  // BLT MODEEXT
1637     case 0x34:                  // BLT TRANSPARENT COLOR 0x00ff
1638     case 0x35:                  // BLT TRANSPARENT COLOR 0xff00
1639     case 0x38:                  // BLT TRANSPARENT COLOR MASK 0x00ff
1640     case 0x39:                  // BLT TRANSPARENT COLOR MASK 0xff00
1641         s->vga.gr[reg_index] = reg_value;
1642         break;
1643     case 0x21:                  // BLT WIDTH 0x001f00
1644     case 0x23:                  // BLT HEIGHT 0x001f00
1645     case 0x25:                  // BLT DEST PITCH 0x001f00
1646     case 0x27:                  // BLT SRC PITCH 0x001f00
1647         s->vga.gr[reg_index] = reg_value & 0x1f;
1648         break;
1649     case 0x2a:                  // BLT DEST ADDR 0x3f0000
1650         s->vga.gr[reg_index] = reg_value & 0x3f;
1651         /* if auto start mode, starts bit blt now */
1652         if (s->vga.gr[0x31] & CIRRUS_BLT_AUTOSTART) {
1653             cirrus_bitblt_start(s);
1654         }
1655         break;
1656     case 0x2e:                  // BLT SRC ADDR 0x3f0000
1657         s->vga.gr[reg_index] = reg_value & 0x3f;
1658         break;
1659     case 0x31:                  // BLT STATUS/START
1660         cirrus_write_bitblt(s, reg_value);
1661         break;
1662     default:
1663 #ifdef DEBUG_CIRRUS
1664         printf("cirrus: outport gr_index %02x, gr_value %02x\n", reg_index,
1665                reg_value);
1666 #endif
1667         break;
1668     }
1669 }
1670
1671 /***************************************
1672  *
1673  *  I/O access between 0x3d4-0x3d5
1674  *
1675  ***************************************/
1676
1677 static int cirrus_vga_read_cr(CirrusVGAState * s, unsigned reg_index)
1678 {
1679     switch (reg_index) {
1680     case 0x00:                  // Standard VGA
1681     case 0x01:                  // Standard VGA
1682     case 0x02:                  // Standard VGA
1683     case 0x03:                  // Standard VGA
1684     case 0x04:                  // Standard VGA
1685     case 0x05:                  // Standard VGA
1686     case 0x06:                  // Standard VGA
1687     case 0x07:                  // Standard VGA
1688     case 0x08:                  // Standard VGA
1689     case 0x09:                  // Standard VGA
1690     case 0x0a:                  // Standard VGA
1691     case 0x0b:                  // Standard VGA
1692     case 0x0c:                  // Standard VGA
1693     case 0x0d:                  // Standard VGA
1694     case 0x0e:                  // Standard VGA
1695     case 0x0f:                  // Standard VGA
1696     case 0x10:                  // Standard VGA
1697     case 0x11:                  // Standard VGA
1698     case 0x12:                  // Standard VGA
1699     case 0x13:                  // Standard VGA
1700     case 0x14:                  // Standard VGA
1701     case 0x15:                  // Standard VGA
1702     case 0x16:                  // Standard VGA
1703     case 0x17:                  // Standard VGA
1704     case 0x18:                  // Standard VGA
1705         return s->vga.cr[s->vga.cr_index];
1706     case 0x24:                  // Attribute Controller Toggle Readback (R)
1707         return (s->vga.ar_flip_flop << 7);
1708     case 0x19:                  // Interlace End
1709     case 0x1a:                  // Miscellaneous Control
1710     case 0x1b:                  // Extended Display Control
1711     case 0x1c:                  // Sync Adjust and Genlock
1712     case 0x1d:                  // Overlay Extended Control
1713     case 0x22:                  // Graphics Data Latches Readback (R)
1714     case 0x25:                  // Part Status
1715     case 0x27:                  // Part ID (R)
1716         return s->vga.cr[s->vga.cr_index];
1717     case 0x26:                  // Attribute Controller Index Readback (R)
1718         return s->vga.ar_index & 0x3f;
1719         break;
1720     default:
1721 #ifdef DEBUG_CIRRUS
1722         printf("cirrus: inport cr_index %02x\n", reg_index);
1723 #endif
1724         return 0xff;
1725     }
1726 }
1727
1728 static void cirrus_vga_write_cr(CirrusVGAState * s, int reg_value)
1729 {
1730     switch (s->vga.cr_index) {
1731     case 0x00:                  // Standard VGA
1732     case 0x01:                  // Standard VGA
1733     case 0x02:                  // Standard VGA
1734     case 0x03:                  // Standard VGA
1735     case 0x04:                  // Standard VGA
1736     case 0x05:                  // Standard VGA
1737     case 0x06:                  // Standard VGA
1738     case 0x07:                  // Standard VGA
1739     case 0x08:                  // Standard VGA
1740     case 0x09:                  // Standard VGA
1741     case 0x0a:                  // Standard VGA
1742     case 0x0b:                  // Standard VGA
1743     case 0x0c:                  // Standard VGA
1744     case 0x0d:                  // Standard VGA
1745     case 0x0e:                  // Standard VGA
1746     case 0x0f:                  // Standard VGA
1747     case 0x10:                  // Standard VGA
1748     case 0x11:                  // Standard VGA
1749     case 0x12:                  // Standard VGA
1750     case 0x13:                  // Standard VGA
1751     case 0x14:                  // Standard VGA
1752     case 0x15:                  // Standard VGA
1753     case 0x16:                  // Standard VGA
1754     case 0x17:                  // Standard VGA
1755     case 0x18:                  // Standard VGA
1756         /* handle CR0-7 protection */
1757         if ((s->vga.cr[0x11] & 0x80) && s->vga.cr_index <= 7) {
1758             /* can always write bit 4 of CR7 */
1759             if (s->vga.cr_index == 7)
1760                 s->vga.cr[7] = (s->vga.cr[7] & ~0x10) | (reg_value & 0x10);
1761             return;
1762         }
1763         s->vga.cr[s->vga.cr_index] = reg_value;
1764         switch(s->vga.cr_index) {
1765         case 0x00:
1766         case 0x04:
1767         case 0x05:
1768         case 0x06:
1769         case 0x07:
1770         case 0x11:
1771         case 0x17:
1772             s->vga.update_retrace_info(&s->vga);
1773             break;
1774         }
1775         break;
1776     case 0x19:                  // Interlace End
1777     case 0x1a:                  // Miscellaneous Control
1778     case 0x1b:                  // Extended Display Control
1779     case 0x1c:                  // Sync Adjust and Genlock
1780     case 0x1d:                  // Overlay Extended Control
1781         s->vga.cr[s->vga.cr_index] = reg_value;
1782 #ifdef DEBUG_CIRRUS
1783         printf("cirrus: handled outport cr_index %02x, cr_value %02x\n",
1784                s->vga.cr_index, reg_value);
1785 #endif
1786         break;
1787     case 0x22:                  // Graphics Data Latches Readback (R)
1788     case 0x24:                  // Attribute Controller Toggle Readback (R)
1789     case 0x26:                  // Attribute Controller Index Readback (R)
1790     case 0x27:                  // Part ID (R)
1791         break;
1792     case 0x25:                  // Part Status
1793     default:
1794 #ifdef DEBUG_CIRRUS
1795         printf("cirrus: outport cr_index %02x, cr_value %02x\n",
1796                s->vga.cr_index, reg_value);
1797 #endif
1798         break;
1799     }
1800 }
1801
1802 /***************************************
1803  *
1804  *  memory-mapped I/O (bitblt)
1805  *
1806  ***************************************/
1807
1808 static uint8_t cirrus_mmio_blt_read(CirrusVGAState * s, unsigned address)
1809 {
1810     int value = 0xff;
1811
1812     switch (address) {
1813     case (CIRRUS_MMIO_BLTBGCOLOR + 0):
1814         value = cirrus_vga_read_gr(s, 0x00);
1815         break;
1816     case (CIRRUS_MMIO_BLTBGCOLOR + 1):
1817         value = cirrus_vga_read_gr(s, 0x10);
1818         break;
1819     case (CIRRUS_MMIO_BLTBGCOLOR + 2):
1820         value = cirrus_vga_read_gr(s, 0x12);
1821         break;
1822     case (CIRRUS_MMIO_BLTBGCOLOR + 3):
1823         value = cirrus_vga_read_gr(s, 0x14);
1824         break;
1825     case (CIRRUS_MMIO_BLTFGCOLOR + 0):
1826         value = cirrus_vga_read_gr(s, 0x01);
1827         break;
1828     case (CIRRUS_MMIO_BLTFGCOLOR + 1):
1829         value = cirrus_vga_read_gr(s, 0x11);
1830         break;
1831     case (CIRRUS_MMIO_BLTFGCOLOR + 2):
1832         value = cirrus_vga_read_gr(s, 0x13);
1833         break;
1834     case (CIRRUS_MMIO_BLTFGCOLOR + 3):
1835         value = cirrus_vga_read_gr(s, 0x15);
1836         break;
1837     case (CIRRUS_MMIO_BLTWIDTH + 0):
1838         value = cirrus_vga_read_gr(s, 0x20);
1839         break;
1840     case (CIRRUS_MMIO_BLTWIDTH + 1):
1841         value = cirrus_vga_read_gr(s, 0x21);
1842         break;
1843     case (CIRRUS_MMIO_BLTHEIGHT + 0):
1844         value = cirrus_vga_read_gr(s, 0x22);
1845         break;
1846     case (CIRRUS_MMIO_BLTHEIGHT + 1):
1847         value = cirrus_vga_read_gr(s, 0x23);
1848         break;
1849     case (CIRRUS_MMIO_BLTDESTPITCH + 0):
1850         value = cirrus_vga_read_gr(s, 0x24);
1851         break;
1852     case (CIRRUS_MMIO_BLTDESTPITCH + 1):
1853         value = cirrus_vga_read_gr(s, 0x25);
1854         break;
1855     case (CIRRUS_MMIO_BLTSRCPITCH + 0):
1856         value = cirrus_vga_read_gr(s, 0x26);
1857         break;
1858     case (CIRRUS_MMIO_BLTSRCPITCH + 1):
1859         value = cirrus_vga_read_gr(s, 0x27);
1860         break;
1861     case (CIRRUS_MMIO_BLTDESTADDR + 0):
1862         value = cirrus_vga_read_gr(s, 0x28);
1863         break;
1864     case (CIRRUS_MMIO_BLTDESTADDR + 1):
1865         value = cirrus_vga_read_gr(s, 0x29);
1866         break;
1867     case (CIRRUS_MMIO_BLTDESTADDR + 2):
1868         value = cirrus_vga_read_gr(s, 0x2a);
1869         break;
1870     case (CIRRUS_MMIO_BLTSRCADDR + 0):
1871         value = cirrus_vga_read_gr(s, 0x2c);
1872         break;
1873     case (CIRRUS_MMIO_BLTSRCADDR + 1):
1874         value = cirrus_vga_read_gr(s, 0x2d);
1875         break;
1876     case (CIRRUS_MMIO_BLTSRCADDR + 2):
1877         value = cirrus_vga_read_gr(s, 0x2e);
1878         break;
1879     case CIRRUS_MMIO_BLTWRITEMASK:
1880         value = cirrus_vga_read_gr(s, 0x2f);
1881         break;
1882     case CIRRUS_MMIO_BLTMODE:
1883         value = cirrus_vga_read_gr(s, 0x30);
1884         break;
1885     case CIRRUS_MMIO_BLTROP:
1886         value = cirrus_vga_read_gr(s, 0x32);
1887         break;
1888     case CIRRUS_MMIO_BLTMODEEXT:
1889         value = cirrus_vga_read_gr(s, 0x33);
1890         break;
1891     case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 0):
1892         value = cirrus_vga_read_gr(s, 0x34);
1893         break;
1894     case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 1):
1895         value = cirrus_vga_read_gr(s, 0x35);
1896         break;
1897     case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 0):
1898         value = cirrus_vga_read_gr(s, 0x38);
1899         break;
1900     case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 1):
1901         value = cirrus_vga_read_gr(s, 0x39);
1902         break;
1903     case CIRRUS_MMIO_BLTSTATUS:
1904         value = cirrus_vga_read_gr(s, 0x31);
1905         break;
1906     default:
1907 #ifdef DEBUG_CIRRUS
1908         printf("cirrus: mmio read - address 0x%04x\n", address);
1909 #endif
1910         break;
1911     }
1912
1913     trace_vga_cirrus_write_blt(address, value);
1914     return (uint8_t) value;
1915 }
1916
1917 static void cirrus_mmio_blt_write(CirrusVGAState * s, unsigned address,
1918                                   uint8_t value)
1919 {
1920     trace_vga_cirrus_write_blt(address, value);
1921     switch (address) {
1922     case (CIRRUS_MMIO_BLTBGCOLOR + 0):
1923         cirrus_vga_write_gr(s, 0x00, value);
1924         break;
1925     case (CIRRUS_MMIO_BLTBGCOLOR + 1):
1926         cirrus_vga_write_gr(s, 0x10, value);
1927         break;
1928     case (CIRRUS_MMIO_BLTBGCOLOR + 2):
1929         cirrus_vga_write_gr(s, 0x12, value);
1930         break;
1931     case (CIRRUS_MMIO_BLTBGCOLOR + 3):
1932         cirrus_vga_write_gr(s, 0x14, value);
1933         break;
1934     case (CIRRUS_MMIO_BLTFGCOLOR + 0):
1935         cirrus_vga_write_gr(s, 0x01, value);
1936         break;
1937     case (CIRRUS_MMIO_BLTFGCOLOR + 1):
1938         cirrus_vga_write_gr(s, 0x11, value);
1939         break;
1940     case (CIRRUS_MMIO_BLTFGCOLOR + 2):
1941         cirrus_vga_write_gr(s, 0x13, value);
1942         break;
1943     case (CIRRUS_MMIO_BLTFGCOLOR + 3):
1944         cirrus_vga_write_gr(s, 0x15, value);
1945         break;
1946     case (CIRRUS_MMIO_BLTWIDTH + 0):
1947         cirrus_vga_write_gr(s, 0x20, value);
1948         break;
1949     case (CIRRUS_MMIO_BLTWIDTH + 1):
1950         cirrus_vga_write_gr(s, 0x21, value);
1951         break;
1952     case (CIRRUS_MMIO_BLTHEIGHT + 0):
1953         cirrus_vga_write_gr(s, 0x22, value);
1954         break;
1955     case (CIRRUS_MMIO_BLTHEIGHT + 1):
1956         cirrus_vga_write_gr(s, 0x23, value);
1957         break;
1958     case (CIRRUS_MMIO_BLTDESTPITCH + 0):
1959         cirrus_vga_write_gr(s, 0x24, value);
1960         break;
1961     case (CIRRUS_MMIO_BLTDESTPITCH + 1):
1962         cirrus_vga_write_gr(s, 0x25, value);
1963         break;
1964     case (CIRRUS_MMIO_BLTSRCPITCH + 0):
1965         cirrus_vga_write_gr(s, 0x26, value);
1966         break;
1967     case (CIRRUS_MMIO_BLTSRCPITCH + 1):
1968         cirrus_vga_write_gr(s, 0x27, value);
1969         break;
1970     case (CIRRUS_MMIO_BLTDESTADDR + 0):
1971         cirrus_vga_write_gr(s, 0x28, value);
1972         break;
1973     case (CIRRUS_MMIO_BLTDESTADDR + 1):
1974         cirrus_vga_write_gr(s, 0x29, value);
1975         break;
1976     case (CIRRUS_MMIO_BLTDESTADDR + 2):
1977         cirrus_vga_write_gr(s, 0x2a, value);
1978         break;
1979     case (CIRRUS_MMIO_BLTDESTADDR + 3):
1980         /* ignored */
1981         break;
1982     case (CIRRUS_MMIO_BLTSRCADDR + 0):
1983         cirrus_vga_write_gr(s, 0x2c, value);
1984         break;
1985     case (CIRRUS_MMIO_BLTSRCADDR + 1):
1986         cirrus_vga_write_gr(s, 0x2d, value);
1987         break;
1988     case (CIRRUS_MMIO_BLTSRCADDR + 2):
1989         cirrus_vga_write_gr(s, 0x2e, value);
1990         break;
1991     case CIRRUS_MMIO_BLTWRITEMASK:
1992         cirrus_vga_write_gr(s, 0x2f, value);
1993         break;
1994     case CIRRUS_MMIO_BLTMODE:
1995         cirrus_vga_write_gr(s, 0x30, value);
1996         break;
1997     case CIRRUS_MMIO_BLTROP:
1998         cirrus_vga_write_gr(s, 0x32, value);
1999         break;
2000     case CIRRUS_MMIO_BLTMODEEXT:
2001         cirrus_vga_write_gr(s, 0x33, value);
2002         break;
2003     case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 0):
2004         cirrus_vga_write_gr(s, 0x34, value);
2005         break;
2006     case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 1):
2007         cirrus_vga_write_gr(s, 0x35, value);
2008         break;
2009     case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 0):
2010         cirrus_vga_write_gr(s, 0x38, value);
2011         break;
2012     case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 1):
2013         cirrus_vga_write_gr(s, 0x39, value);
2014         break;
2015     case CIRRUS_MMIO_BLTSTATUS:
2016         cirrus_vga_write_gr(s, 0x31, value);
2017         break;
2018     default:
2019 #ifdef DEBUG_CIRRUS
2020         printf("cirrus: mmio write - addr 0x%04x val 0x%02x (ignored)\n",
2021                address, value);
2022 #endif
2023         break;
2024     }
2025 }
2026
2027 /***************************************
2028  *
2029  *  write mode 4/5
2030  *
2031  ***************************************/
2032
2033 static void cirrus_mem_writeb_mode4and5_8bpp(CirrusVGAState * s,
2034                                              unsigned mode,
2035                                              unsigned offset,
2036                                              uint32_t mem_value)
2037 {
2038     int x;
2039     unsigned val = mem_value;
2040     uint8_t *dst;
2041
2042     for (x = 0; x < 8; x++) {
2043         dst = s->vga.vram_ptr + ((offset + x) & s->cirrus_addr_mask);
2044         if (val & 0x80) {
2045             *dst = s->cirrus_shadow_gr1;
2046         } else if (mode == 5) {
2047             *dst = s->cirrus_shadow_gr0;
2048         }
2049         val <<= 1;
2050     }
2051     memory_region_set_dirty(&s->vga.vram, offset, 8);
2052 }
2053
2054 static void cirrus_mem_writeb_mode4and5_16bpp(CirrusVGAState * s,
2055                                               unsigned mode,
2056                                               unsigned offset,
2057                                               uint32_t mem_value)
2058 {
2059     int x;
2060     unsigned val = mem_value;
2061     uint8_t *dst;
2062
2063     for (x = 0; x < 8; x++) {
2064         dst = s->vga.vram_ptr + ((offset + 2 * x) & s->cirrus_addr_mask & ~1);
2065         if (val & 0x80) {
2066             *dst = s->cirrus_shadow_gr1;
2067             *(dst + 1) = s->vga.gr[0x11];
2068         } else if (mode == 5) {
2069             *dst = s->cirrus_shadow_gr0;
2070             *(dst + 1) = s->vga.gr[0x10];
2071         }
2072         val <<= 1;
2073     }
2074     memory_region_set_dirty(&s->vga.vram, offset, 16);
2075 }
2076
2077 /***************************************
2078  *
2079  *  memory access between 0xa0000-0xbffff
2080  *
2081  ***************************************/
2082
2083 static uint64_t cirrus_vga_mem_read(void *opaque,
2084                                     hwaddr addr,
2085                                     uint32_t size)
2086 {
2087     CirrusVGAState *s = opaque;
2088     unsigned bank_index;
2089     unsigned bank_offset;
2090     uint32_t val;
2091
2092     if ((s->vga.sr[0x07] & 0x01) == 0) {
2093         return vga_mem_readb(&s->vga, addr);
2094     }
2095
2096     if (addr < 0x10000) {
2097         /* XXX handle bitblt */
2098         /* video memory */
2099         bank_index = addr >> 15;
2100         bank_offset = addr & 0x7fff;
2101         if (bank_offset < s->cirrus_bank_limit[bank_index]) {
2102             bank_offset += s->cirrus_bank_base[bank_index];
2103             if ((s->vga.gr[0x0B] & 0x14) == 0x14) {
2104                 bank_offset <<= 4;
2105             } else if (s->vga.gr[0x0B] & 0x02) {
2106                 bank_offset <<= 3;
2107             }
2108             bank_offset &= s->cirrus_addr_mask;
2109             val = *(s->vga.vram_ptr + bank_offset);
2110         } else
2111             val = 0xff;
2112     } else if (addr >= 0x18000 && addr < 0x18100) {
2113         /* memory-mapped I/O */
2114         val = 0xff;
2115         if ((s->vga.sr[0x17] & 0x44) == 0x04) {
2116             val = cirrus_mmio_blt_read(s, addr & 0xff);
2117         }
2118     } else {
2119         val = 0xff;
2120 #ifdef DEBUG_CIRRUS
2121         printf("cirrus: mem_readb " TARGET_FMT_plx "\n", addr);
2122 #endif
2123     }
2124     return val;
2125 }
2126
2127 static void cirrus_vga_mem_write(void *opaque,
2128                                  hwaddr addr,
2129                                  uint64_t mem_value,
2130                                  uint32_t size)
2131 {
2132     CirrusVGAState *s = opaque;
2133     unsigned bank_index;
2134     unsigned bank_offset;
2135     unsigned mode;
2136
2137     if ((s->vga.sr[0x07] & 0x01) == 0) {
2138         vga_mem_writeb(&s->vga, addr, mem_value);
2139         return;
2140     }
2141
2142     if (addr < 0x10000) {
2143         if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
2144             /* bitblt */
2145             *s->cirrus_srcptr++ = (uint8_t) mem_value;
2146             if (s->cirrus_srcptr >= s->cirrus_srcptr_end) {
2147                 cirrus_bitblt_cputovideo_next(s);
2148             }
2149         } else {
2150             /* video memory */
2151             bank_index = addr >> 15;
2152             bank_offset = addr & 0x7fff;
2153             if (bank_offset < s->cirrus_bank_limit[bank_index]) {
2154                 bank_offset += s->cirrus_bank_base[bank_index];
2155                 if ((s->vga.gr[0x0B] & 0x14) == 0x14) {
2156                     bank_offset <<= 4;
2157                 } else if (s->vga.gr[0x0B] & 0x02) {
2158                     bank_offset <<= 3;
2159                 }
2160                 bank_offset &= s->cirrus_addr_mask;
2161                 mode = s->vga.gr[0x05] & 0x7;
2162                 if (mode < 4 || mode > 5 || ((s->vga.gr[0x0B] & 0x4) == 0)) {
2163                     *(s->vga.vram_ptr + bank_offset) = mem_value;
2164                     memory_region_set_dirty(&s->vga.vram, bank_offset,
2165                                             sizeof(mem_value));
2166                 } else {
2167                     if ((s->vga.gr[0x0B] & 0x14) != 0x14) {
2168                         cirrus_mem_writeb_mode4and5_8bpp(s, mode,
2169                                                          bank_offset,
2170                                                          mem_value);
2171                     } else {
2172                         cirrus_mem_writeb_mode4and5_16bpp(s, mode,
2173                                                           bank_offset,
2174                                                           mem_value);
2175                     }
2176                 }
2177             }
2178         }
2179     } else if (addr >= 0x18000 && addr < 0x18100) {
2180         /* memory-mapped I/O */
2181         if ((s->vga.sr[0x17] & 0x44) == 0x04) {
2182             cirrus_mmio_blt_write(s, addr & 0xff, mem_value);
2183         }
2184     } else {
2185 #ifdef DEBUG_CIRRUS
2186         printf("cirrus: mem_writeb " TARGET_FMT_plx " value 0x%02" PRIu64 "\n", addr,
2187                mem_value);
2188 #endif
2189     }
2190 }
2191
2192 static const MemoryRegionOps cirrus_vga_mem_ops = {
2193     .read = cirrus_vga_mem_read,
2194     .write = cirrus_vga_mem_write,
2195     .endianness = DEVICE_LITTLE_ENDIAN,
2196     .impl = {
2197         .min_access_size = 1,
2198         .max_access_size = 1,
2199     },
2200 };
2201
2202 /***************************************
2203  *
2204  *  hardware cursor
2205  *
2206  ***************************************/
2207
2208 static inline void invalidate_cursor1(CirrusVGAState *s)
2209 {
2210     if (s->last_hw_cursor_size) {
2211         vga_invalidate_scanlines(&s->vga,
2212                                  s->last_hw_cursor_y + s->last_hw_cursor_y_start,
2213                                  s->last_hw_cursor_y + s->last_hw_cursor_y_end);
2214     }
2215 }
2216
2217 static inline void cirrus_cursor_compute_yrange(CirrusVGAState *s)
2218 {
2219     const uint8_t *src;
2220     uint32_t content;
2221     int y, y_min, y_max;
2222
2223     src = s->vga.vram_ptr + s->real_vram_size - 16 * KiB;
2224     if (s->vga.sr[0x12] & CIRRUS_CURSOR_LARGE) {
2225         src += (s->vga.sr[0x13] & 0x3c) * 256;
2226         y_min = 64;
2227         y_max = -1;
2228         for(y = 0; y < 64; y++) {
2229             content = ((uint32_t *)src)[0] |
2230                 ((uint32_t *)src)[1] |
2231                 ((uint32_t *)src)[2] |
2232                 ((uint32_t *)src)[3];
2233             if (content) {
2234                 if (y < y_min)
2235                     y_min = y;
2236                 if (y > y_max)
2237                     y_max = y;
2238             }
2239             src += 16;
2240         }
2241     } else {
2242         src += (s->vga.sr[0x13] & 0x3f) * 256;
2243         y_min = 32;
2244         y_max = -1;
2245         for(y = 0; y < 32; y++) {
2246             content = ((uint32_t *)src)[0] |
2247                 ((uint32_t *)(src + 128))[0];
2248             if (content) {
2249                 if (y < y_min)
2250                     y_min = y;
2251                 if (y > y_max)
2252                     y_max = y;
2253             }
2254             src += 4;
2255         }
2256     }
2257     if (y_min > y_max) {
2258         s->last_hw_cursor_y_start = 0;
2259         s->last_hw_cursor_y_end = 0;
2260     } else {
2261         s->last_hw_cursor_y_start = y_min;
2262         s->last_hw_cursor_y_end = y_max + 1;
2263     }
2264 }
2265
2266 /* NOTE: we do not currently handle the cursor bitmap change, so we
2267    update the cursor only if it moves. */
2268 static void cirrus_cursor_invalidate(VGACommonState *s1)
2269 {
2270     CirrusVGAState *s = container_of(s1, CirrusVGAState, vga);
2271     int size;
2272
2273     if (!(s->vga.sr[0x12] & CIRRUS_CURSOR_SHOW)) {
2274         size = 0;
2275     } else {
2276         if (s->vga.sr[0x12] & CIRRUS_CURSOR_LARGE)
2277             size = 64;
2278         else
2279             size = 32;
2280     }
2281     /* invalidate last cursor and new cursor if any change */
2282     if (s->last_hw_cursor_size != size ||
2283         s->last_hw_cursor_x != s->vga.hw_cursor_x ||
2284         s->last_hw_cursor_y != s->vga.hw_cursor_y) {
2285
2286         invalidate_cursor1(s);
2287
2288         s->last_hw_cursor_size = size;
2289         s->last_hw_cursor_x = s->vga.hw_cursor_x;
2290         s->last_hw_cursor_y = s->vga.hw_cursor_y;
2291         /* compute the real cursor min and max y */
2292         cirrus_cursor_compute_yrange(s);
2293         invalidate_cursor1(s);
2294     }
2295 }
2296
2297 static void vga_draw_cursor_line(uint8_t *d1,
2298                                  const uint8_t *src1,
2299                                  int poffset, int w,
2300                                  unsigned int color0,
2301                                  unsigned int color1,
2302                                  unsigned int color_xor)
2303 {
2304     const uint8_t *plane0, *plane1;
2305     int x, b0, b1;
2306     uint8_t *d;
2307
2308     d = d1;
2309     plane0 = src1;
2310     plane1 = src1 + poffset;
2311     for (x = 0; x < w; x++) {
2312         b0 = (plane0[x >> 3] >> (7 - (x & 7))) & 1;
2313         b1 = (plane1[x >> 3] >> (7 - (x & 7))) & 1;
2314         switch (b0 | (b1 << 1)) {
2315         case 0:
2316             break;
2317         case 1:
2318             ((uint32_t *)d)[0] ^= color_xor;
2319             break;
2320         case 2:
2321             ((uint32_t *)d)[0] = color0;
2322             break;
2323         case 3:
2324             ((uint32_t *)d)[0] = color1;
2325             break;
2326         }
2327         d += 4;
2328     }
2329 }
2330
2331 static void cirrus_cursor_draw_line(VGACommonState *s1, uint8_t *d1, int scr_y)
2332 {
2333     CirrusVGAState *s = container_of(s1, CirrusVGAState, vga);
2334     int w, h, x1, x2, poffset;
2335     unsigned int color0, color1;
2336     const uint8_t *palette, *src;
2337     uint32_t content;
2338
2339     if (!(s->vga.sr[0x12] & CIRRUS_CURSOR_SHOW))
2340         return;
2341     /* fast test to see if the cursor intersects with the scan line */
2342     if (s->vga.sr[0x12] & CIRRUS_CURSOR_LARGE) {
2343         h = 64;
2344     } else {
2345         h = 32;
2346     }
2347     if (scr_y < s->vga.hw_cursor_y ||
2348         scr_y >= (s->vga.hw_cursor_y + h)) {
2349         return;
2350     }
2351
2352     src = s->vga.vram_ptr + s->real_vram_size - 16 * KiB;
2353     if (s->vga.sr[0x12] & CIRRUS_CURSOR_LARGE) {
2354         src += (s->vga.sr[0x13] & 0x3c) * 256;
2355         src += (scr_y - s->vga.hw_cursor_y) * 16;
2356         poffset = 8;
2357         content = ((uint32_t *)src)[0] |
2358             ((uint32_t *)src)[1] |
2359             ((uint32_t *)src)[2] |
2360             ((uint32_t *)src)[3];
2361     } else {
2362         src += (s->vga.sr[0x13] & 0x3f) * 256;
2363         src += (scr_y - s->vga.hw_cursor_y) * 4;
2364
2365
2366         poffset = 128;
2367         content = ((uint32_t *)src)[0] |
2368             ((uint32_t *)(src + 128))[0];
2369     }
2370     /* if nothing to draw, no need to continue */
2371     if (!content)
2372         return;
2373     w = h;
2374
2375     x1 = s->vga.hw_cursor_x;
2376     if (x1 >= s->vga.last_scr_width)
2377         return;
2378     x2 = s->vga.hw_cursor_x + w;
2379     if (x2 > s->vga.last_scr_width)
2380         x2 = s->vga.last_scr_width;
2381     w = x2 - x1;
2382     palette = s->cirrus_hidden_palette;
2383     color0 = rgb_to_pixel32(c6_to_8(palette[0x0 * 3]),
2384                             c6_to_8(palette[0x0 * 3 + 1]),
2385                             c6_to_8(palette[0x0 * 3 + 2]));
2386     color1 = rgb_to_pixel32(c6_to_8(palette[0xf * 3]),
2387                             c6_to_8(palette[0xf * 3 + 1]),
2388                             c6_to_8(palette[0xf * 3 + 2]));
2389     d1 += x1 * 4;
2390     vga_draw_cursor_line(d1, src, poffset, w, color0, color1, 0xffffff);
2391 }
2392
2393 /***************************************
2394  *
2395  *  LFB memory access
2396  *
2397  ***************************************/
2398
2399 static uint64_t cirrus_linear_read(void *opaque, hwaddr addr,
2400                                    unsigned size)
2401 {
2402     CirrusVGAState *s = opaque;
2403     uint32_t ret;
2404
2405     addr &= s->cirrus_addr_mask;
2406
2407     if (((s->vga.sr[0x17] & 0x44) == 0x44) &&
2408         ((addr & s->linear_mmio_mask) == s->linear_mmio_mask)) {
2409         /* memory-mapped I/O */
2410         ret = cirrus_mmio_blt_read(s, addr & 0xff);
2411     } else if (0) {
2412         /* XXX handle bitblt */
2413         ret = 0xff;
2414     } else {
2415         /* video memory */
2416         if ((s->vga.gr[0x0B] & 0x14) == 0x14) {
2417             addr <<= 4;
2418         } else if (s->vga.gr[0x0B] & 0x02) {
2419             addr <<= 3;
2420         }
2421         addr &= s->cirrus_addr_mask;
2422         ret = *(s->vga.vram_ptr + addr);
2423     }
2424
2425     return ret;
2426 }
2427
2428 static void cirrus_linear_write(void *opaque, hwaddr addr,
2429                                 uint64_t val, unsigned size)
2430 {
2431     CirrusVGAState *s = opaque;
2432     unsigned mode;
2433
2434     addr &= s->cirrus_addr_mask;
2435
2436     if (((s->vga.sr[0x17] & 0x44) == 0x44) &&
2437         ((addr & s->linear_mmio_mask) ==  s->linear_mmio_mask)) {
2438         /* memory-mapped I/O */
2439         cirrus_mmio_blt_write(s, addr & 0xff, val);
2440     } else if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
2441         /* bitblt */
2442         *s->cirrus_srcptr++ = (uint8_t) val;
2443         if (s->cirrus_srcptr >= s->cirrus_srcptr_end) {
2444             cirrus_bitblt_cputovideo_next(s);
2445         }
2446     } else {
2447         /* video memory */
2448         if ((s->vga.gr[0x0B] & 0x14) == 0x14) {
2449             addr <<= 4;
2450         } else if (s->vga.gr[0x0B] & 0x02) {
2451             addr <<= 3;
2452         }
2453         addr &= s->cirrus_addr_mask;
2454
2455         mode = s->vga.gr[0x05] & 0x7;
2456         if (mode < 4 || mode > 5 || ((s->vga.gr[0x0B] & 0x4) == 0)) {
2457             *(s->vga.vram_ptr + addr) = (uint8_t) val;
2458             memory_region_set_dirty(&s->vga.vram, addr, 1);
2459         } else {
2460             if ((s->vga.gr[0x0B] & 0x14) != 0x14) {
2461                 cirrus_mem_writeb_mode4and5_8bpp(s, mode, addr, val);
2462             } else {
2463                 cirrus_mem_writeb_mode4and5_16bpp(s, mode, addr, val);
2464             }
2465         }
2466     }
2467 }
2468
2469 /***************************************
2470  *
2471  *  system to screen memory access
2472  *
2473  ***************************************/
2474
2475
2476 static uint64_t cirrus_linear_bitblt_read(void *opaque,
2477                                           hwaddr addr,
2478                                           unsigned size)
2479 {
2480     CirrusVGAState *s = opaque;
2481     uint32_t ret;
2482
2483     /* XXX handle bitblt */
2484     (void)s;
2485     ret = 0xff;
2486     return ret;
2487 }
2488
2489 static void cirrus_linear_bitblt_write(void *opaque,
2490                                        hwaddr addr,
2491                                        uint64_t val,
2492                                        unsigned size)
2493 {
2494     CirrusVGAState *s = opaque;
2495
2496     if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
2497         /* bitblt */
2498         *s->cirrus_srcptr++ = (uint8_t) val;
2499         if (s->cirrus_srcptr >= s->cirrus_srcptr_end) {
2500             cirrus_bitblt_cputovideo_next(s);
2501         }
2502     }
2503 }
2504
2505 static const MemoryRegionOps cirrus_linear_bitblt_io_ops = {
2506     .read = cirrus_linear_bitblt_read,
2507     .write = cirrus_linear_bitblt_write,
2508     .endianness = DEVICE_LITTLE_ENDIAN,
2509     .impl = {
2510         .min_access_size = 1,
2511         .max_access_size = 1,
2512     },
2513 };
2514
2515 static void map_linear_vram_bank(CirrusVGAState *s, unsigned bank)
2516 {
2517     MemoryRegion *mr = &s->cirrus_bank[bank];
2518     bool enabled = !(s->cirrus_srcptr != s->cirrus_srcptr_end)
2519         && !((s->vga.sr[0x07] & 0x01) == 0)
2520         && !((s->vga.gr[0x0B] & 0x14) == 0x14)
2521         && !(s->vga.gr[0x0B] & 0x02);
2522
2523     memory_region_set_enabled(mr, enabled);
2524     memory_region_set_alias_offset(mr, s->cirrus_bank_base[bank]);
2525 }
2526
2527 static void map_linear_vram(CirrusVGAState *s)
2528 {
2529     if (s->bustype == CIRRUS_BUSTYPE_PCI && !s->linear_vram) {
2530         s->linear_vram = true;
2531         memory_region_add_subregion_overlap(&s->pci_bar, 0, &s->vga.vram, 1);
2532     }
2533     map_linear_vram_bank(s, 0);
2534     map_linear_vram_bank(s, 1);
2535 }
2536
2537 static void unmap_linear_vram(CirrusVGAState *s)
2538 {
2539     if (s->bustype == CIRRUS_BUSTYPE_PCI && s->linear_vram) {
2540         s->linear_vram = false;
2541         memory_region_del_subregion(&s->pci_bar, &s->vga.vram);
2542     }
2543     memory_region_set_enabled(&s->cirrus_bank[0], false);
2544     memory_region_set_enabled(&s->cirrus_bank[1], false);
2545 }
2546
2547 /* Compute the memory access functions */
2548 static void cirrus_update_memory_access(CirrusVGAState *s)
2549 {
2550     unsigned mode;
2551
2552     memory_region_transaction_begin();
2553     if ((s->vga.sr[0x17] & 0x44) == 0x44) {
2554         goto generic_io;
2555     } else if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
2556         goto generic_io;
2557     } else {
2558         if ((s->vga.gr[0x0B] & 0x14) == 0x14) {
2559             goto generic_io;
2560         } else if (s->vga.gr[0x0B] & 0x02) {
2561             goto generic_io;
2562         }
2563
2564         mode = s->vga.gr[0x05] & 0x7;
2565         if (mode < 4 || mode > 5 || ((s->vga.gr[0x0B] & 0x4) == 0)) {
2566             map_linear_vram(s);
2567         } else {
2568         generic_io:
2569             unmap_linear_vram(s);
2570         }
2571     }
2572     memory_region_transaction_commit();
2573 }
2574
2575
2576 /* I/O ports */
2577
2578 static uint64_t cirrus_vga_ioport_read(void *opaque, hwaddr addr,
2579                                        unsigned size)
2580 {
2581     CirrusVGAState *c = opaque;
2582     VGACommonState *s = &c->vga;
2583     int val, index;
2584
2585     addr += 0x3b0;
2586
2587     if (vga_ioport_invalid(s, addr)) {
2588         val = 0xff;
2589     } else {
2590         switch (addr) {
2591         case 0x3c0:
2592             if (s->ar_flip_flop == 0) {
2593                 val = s->ar_index;
2594             } else {
2595                 val = 0;
2596             }
2597             break;
2598         case 0x3c1:
2599             index = s->ar_index & 0x1f;
2600             if (index < 21)
2601                 val = s->ar[index];
2602             else
2603                 val = 0;
2604             break;
2605         case 0x3c2:
2606             val = s->st00;
2607             break;
2608         case 0x3c4:
2609             val = s->sr_index;
2610             break;
2611         case 0x3c5:
2612             val = cirrus_vga_read_sr(c);
2613             break;
2614 #ifdef DEBUG_VGA_REG
2615             printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
2616 #endif
2617             break;
2618         case 0x3c6:
2619             val = cirrus_read_hidden_dac(c);
2620             break;
2621         case 0x3c7:
2622             val = s->dac_state;
2623             break;
2624         case 0x3c8:
2625             val = s->dac_write_index;
2626             c->cirrus_hidden_dac_lockindex = 0;
2627             break;
2628         case 0x3c9:
2629             val = cirrus_vga_read_palette(c);
2630             break;
2631         case 0x3ca:
2632             val = s->fcr;
2633             break;
2634         case 0x3cc:
2635             val = s->msr;
2636             break;
2637         case 0x3ce:
2638             val = s->gr_index;
2639             break;
2640         case 0x3cf:
2641             val = cirrus_vga_read_gr(c, s->gr_index);
2642 #ifdef DEBUG_VGA_REG
2643             printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
2644 #endif
2645             break;
2646         case 0x3b4:
2647         case 0x3d4:
2648             val = s->cr_index;
2649             break;
2650         case 0x3b5:
2651         case 0x3d5:
2652             val = cirrus_vga_read_cr(c, s->cr_index);
2653 #ifdef DEBUG_VGA_REG
2654             printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
2655 #endif
2656             break;
2657         case 0x3ba:
2658         case 0x3da:
2659             /* just toggle to fool polling */
2660             val = s->st01 = s->retrace(s);
2661             s->ar_flip_flop = 0;
2662             break;
2663         default:
2664             val = 0x00;
2665             break;
2666         }
2667     }
2668     trace_vga_cirrus_read_io(addr, val);
2669     return val;
2670 }
2671
2672 static void cirrus_vga_ioport_write(void *opaque, hwaddr addr, uint64_t val,
2673                                     unsigned size)
2674 {
2675     CirrusVGAState *c = opaque;
2676     VGACommonState *s = &c->vga;
2677     int index;
2678
2679     addr += 0x3b0;
2680
2681     /* check port range access depending on color/monochrome mode */
2682     if (vga_ioport_invalid(s, addr)) {
2683         return;
2684     }
2685     trace_vga_cirrus_write_io(addr, val);
2686
2687     switch (addr) {
2688     case 0x3c0:
2689         if (s->ar_flip_flop == 0) {
2690             val &= 0x3f;
2691             s->ar_index = val;
2692         } else {
2693             index = s->ar_index & 0x1f;
2694             switch (index) {
2695             case 0x00 ... 0x0f:
2696                 s->ar[index] = val & 0x3f;
2697                 break;
2698             case 0x10:
2699                 s->ar[index] = val & ~0x10;
2700                 break;
2701             case 0x11:
2702                 s->ar[index] = val;
2703                 break;
2704             case 0x12:
2705                 s->ar[index] = val & ~0xc0;
2706                 break;
2707             case 0x13:
2708                 s->ar[index] = val & ~0xf0;
2709                 break;
2710             case 0x14:
2711                 s->ar[index] = val & ~0xf0;
2712                 break;
2713             default:
2714                 break;
2715             }
2716         }
2717         s->ar_flip_flop ^= 1;
2718         break;
2719     case 0x3c2:
2720         s->msr = val & ~0x10;
2721         s->update_retrace_info(s);
2722         break;
2723     case 0x3c4:
2724         s->sr_index = val;
2725         break;
2726     case 0x3c5:
2727 #ifdef DEBUG_VGA_REG
2728         printf("vga: write SR%x = 0x%02" PRIu64 "\n", s->sr_index, val);
2729 #endif
2730         cirrus_vga_write_sr(c, val);
2731         break;
2732     case 0x3c6:
2733         cirrus_write_hidden_dac(c, val);
2734         break;
2735     case 0x3c7:
2736         s->dac_read_index = val;
2737         s->dac_sub_index = 0;
2738         s->dac_state = 3;
2739         break;
2740     case 0x3c8:
2741         s->dac_write_index = val;
2742         s->dac_sub_index = 0;
2743         s->dac_state = 0;
2744         break;
2745     case 0x3c9:
2746         cirrus_vga_write_palette(c, val);
2747         break;
2748     case 0x3ce:
2749         s->gr_index = val;
2750         break;
2751     case 0x3cf:
2752 #ifdef DEBUG_VGA_REG
2753         printf("vga: write GR%x = 0x%02" PRIu64 "\n", s->gr_index, val);
2754 #endif
2755         cirrus_vga_write_gr(c, s->gr_index, val);
2756         break;
2757     case 0x3b4:
2758     case 0x3d4:
2759         s->cr_index = val;
2760         break;
2761     case 0x3b5:
2762     case 0x3d5:
2763 #ifdef DEBUG_VGA_REG
2764         printf("vga: write CR%x = 0x%02"PRIu64"\n", s->cr_index, val);
2765 #endif
2766         cirrus_vga_write_cr(c, val);
2767         break;
2768     case 0x3ba:
2769     case 0x3da:
2770         s->fcr = val & 0x10;
2771         break;
2772     }
2773 }
2774
2775 /***************************************
2776  *
2777  *  memory-mapped I/O access
2778  *
2779  ***************************************/
2780
2781 static uint64_t cirrus_mmio_read(void *opaque, hwaddr addr,
2782                                  unsigned size)
2783 {
2784     CirrusVGAState *s = opaque;
2785
2786     if (addr >= 0x100) {
2787         return cirrus_mmio_blt_read(s, addr - 0x100);
2788     } else {
2789         return cirrus_vga_ioport_read(s, addr + 0x10, size);
2790     }
2791 }
2792
2793 static void cirrus_mmio_write(void *opaque, hwaddr addr,
2794                               uint64_t val, unsigned size)
2795 {
2796     CirrusVGAState *s = opaque;
2797
2798     if (addr >= 0x100) {
2799         cirrus_mmio_blt_write(s, addr - 0x100, val);
2800     } else {
2801         cirrus_vga_ioport_write(s, addr + 0x10, val, size);
2802     }
2803 }
2804
2805 static const MemoryRegionOps cirrus_mmio_io_ops = {
2806     .read = cirrus_mmio_read,
2807     .write = cirrus_mmio_write,
2808     .endianness = DEVICE_LITTLE_ENDIAN,
2809     .impl = {
2810         .min_access_size = 1,
2811         .max_access_size = 1,
2812     },
2813 };
2814
2815 /* load/save state */
2816
2817 static int cirrus_post_load(void *opaque, int version_id)
2818 {
2819     CirrusVGAState *s = opaque;
2820
2821     s->vga.gr[0x00] = s->cirrus_shadow_gr0 & 0x0f;
2822     s->vga.gr[0x01] = s->cirrus_shadow_gr1 & 0x0f;
2823
2824     cirrus_update_memory_access(s);
2825     /* force refresh */
2826     s->vga.graphic_mode = -1;
2827     cirrus_update_bank_ptr(s, 0);
2828     cirrus_update_bank_ptr(s, 1);
2829     return 0;
2830 }
2831
2832 static const VMStateDescription vmstate_cirrus_vga = {
2833     .name = "cirrus_vga",
2834     .version_id = 2,
2835     .minimum_version_id = 1,
2836     .post_load = cirrus_post_load,
2837     .fields = (VMStateField[]) {
2838         VMSTATE_UINT32(vga.latch, CirrusVGAState),
2839         VMSTATE_UINT8(vga.sr_index, CirrusVGAState),
2840         VMSTATE_BUFFER(vga.sr, CirrusVGAState),
2841         VMSTATE_UINT8(vga.gr_index, CirrusVGAState),
2842         VMSTATE_UINT8(cirrus_shadow_gr0, CirrusVGAState),
2843         VMSTATE_UINT8(cirrus_shadow_gr1, CirrusVGAState),
2844         VMSTATE_BUFFER_START_MIDDLE(vga.gr, CirrusVGAState, 2),
2845         VMSTATE_UINT8(vga.ar_index, CirrusVGAState),
2846         VMSTATE_BUFFER(vga.ar, CirrusVGAState),
2847         VMSTATE_INT32(vga.ar_flip_flop, CirrusVGAState),
2848         VMSTATE_UINT8(vga.cr_index, CirrusVGAState),
2849         VMSTATE_BUFFER(vga.cr, CirrusVGAState),
2850         VMSTATE_UINT8(vga.msr, CirrusVGAState),
2851         VMSTATE_UINT8(vga.fcr, CirrusVGAState),
2852         VMSTATE_UINT8(vga.st00, CirrusVGAState),
2853         VMSTATE_UINT8(vga.st01, CirrusVGAState),
2854         VMSTATE_UINT8(vga.dac_state, CirrusVGAState),
2855         VMSTATE_UINT8(vga.dac_sub_index, CirrusVGAState),
2856         VMSTATE_UINT8(vga.dac_read_index, CirrusVGAState),
2857         VMSTATE_UINT8(vga.dac_write_index, CirrusVGAState),
2858         VMSTATE_BUFFER(vga.dac_cache, CirrusVGAState),
2859         VMSTATE_BUFFER(vga.palette, CirrusVGAState),
2860         VMSTATE_INT32(vga.bank_offset, CirrusVGAState),
2861         VMSTATE_UINT8(cirrus_hidden_dac_lockindex, CirrusVGAState),
2862         VMSTATE_UINT8(cirrus_hidden_dac_data, CirrusVGAState),
2863         VMSTATE_UINT32(vga.hw_cursor_x, CirrusVGAState),
2864         VMSTATE_UINT32(vga.hw_cursor_y, CirrusVGAState),
2865         /* XXX: we do not save the bitblt state - we assume we do not save
2866            the state when the blitter is active */
2867         VMSTATE_END_OF_LIST()
2868     }
2869 };
2870
2871 static const VMStateDescription vmstate_pci_cirrus_vga = {
2872     .name = "cirrus_vga",
2873     .version_id = 2,
2874     .minimum_version_id = 2,
2875     .fields = (VMStateField[]) {
2876         VMSTATE_PCI_DEVICE(dev, PCICirrusVGAState),
2877         VMSTATE_STRUCT(cirrus_vga, PCICirrusVGAState, 0,
2878                        vmstate_cirrus_vga, CirrusVGAState),
2879         VMSTATE_END_OF_LIST()
2880     }
2881 };
2882
2883 /***************************************
2884  *
2885  *  initialize
2886  *
2887  ***************************************/
2888
2889 static void cirrus_reset(void *opaque)
2890 {
2891     CirrusVGAState *s = opaque;
2892
2893     vga_common_reset(&s->vga);
2894     unmap_linear_vram(s);
2895     s->vga.sr[0x06] = 0x0f;
2896     if (s->device_id == CIRRUS_ID_CLGD5446) {
2897         /* 4MB 64 bit memory config, always PCI */
2898         s->vga.sr[0x1F] = 0x2d;         // MemClock
2899         s->vga.gr[0x18] = 0x0f;             // fastest memory configuration
2900         s->vga.sr[0x0f] = 0x98;
2901         s->vga.sr[0x17] = 0x20;
2902         s->vga.sr[0x15] = 0x04; /* memory size, 3=2MB, 4=4MB */
2903     } else {
2904         s->vga.sr[0x1F] = 0x22;         // MemClock
2905         s->vga.sr[0x0F] = CIRRUS_MEMSIZE_2M;
2906         s->vga.sr[0x17] = s->bustype;
2907         s->vga.sr[0x15] = 0x03; /* memory size, 3=2MB, 4=4MB */
2908     }
2909     s->vga.cr[0x27] = s->device_id;
2910
2911     s->cirrus_hidden_dac_lockindex = 5;
2912     s->cirrus_hidden_dac_data = 0;
2913 }
2914
2915 static const MemoryRegionOps cirrus_linear_io_ops = {
2916     .read = cirrus_linear_read,
2917     .write = cirrus_linear_write,
2918     .endianness = DEVICE_LITTLE_ENDIAN,
2919     .impl = {
2920         .min_access_size = 1,
2921         .max_access_size = 1,
2922     },
2923 };
2924
2925 static const MemoryRegionOps cirrus_vga_io_ops = {
2926     .read = cirrus_vga_ioport_read,
2927     .write = cirrus_vga_ioport_write,
2928     .endianness = DEVICE_LITTLE_ENDIAN,
2929     .impl = {
2930         .min_access_size = 1,
2931         .max_access_size = 1,
2932     },
2933 };
2934
2935 static void cirrus_init_common(CirrusVGAState *s, Object *owner,
2936                                int device_id, int is_pci,
2937                                MemoryRegion *system_memory,
2938                                MemoryRegion *system_io)
2939 {
2940     int i;
2941     static int inited;
2942
2943     if (!inited) {
2944         inited = 1;
2945         for(i = 0;i < 256; i++)
2946             rop_to_index[i] = CIRRUS_ROP_NOP_INDEX; /* nop rop */
2947         rop_to_index[CIRRUS_ROP_0] = 0;
2948         rop_to_index[CIRRUS_ROP_SRC_AND_DST] = 1;
2949         rop_to_index[CIRRUS_ROP_NOP] = 2;
2950         rop_to_index[CIRRUS_ROP_SRC_AND_NOTDST] = 3;
2951         rop_to_index[CIRRUS_ROP_NOTDST] = 4;
2952         rop_to_index[CIRRUS_ROP_SRC] = 5;
2953         rop_to_index[CIRRUS_ROP_1] = 6;
2954         rop_to_index[CIRRUS_ROP_NOTSRC_AND_DST] = 7;
2955         rop_to_index[CIRRUS_ROP_SRC_XOR_DST] = 8;
2956         rop_to_index[CIRRUS_ROP_SRC_OR_DST] = 9;
2957         rop_to_index[CIRRUS_ROP_NOTSRC_OR_NOTDST] = 10;
2958         rop_to_index[CIRRUS_ROP_SRC_NOTXOR_DST] = 11;
2959         rop_to_index[CIRRUS_ROP_SRC_OR_NOTDST] = 12;
2960         rop_to_index[CIRRUS_ROP_NOTSRC] = 13;
2961         rop_to_index[CIRRUS_ROP_NOTSRC_OR_DST] = 14;
2962         rop_to_index[CIRRUS_ROP_NOTSRC_AND_NOTDST] = 15;
2963         s->device_id = device_id;
2964         if (is_pci)
2965             s->bustype = CIRRUS_BUSTYPE_PCI;
2966         else
2967             s->bustype = CIRRUS_BUSTYPE_ISA;
2968     }
2969
2970     /* Register ioport 0x3b0 - 0x3df */
2971     memory_region_init_io(&s->cirrus_vga_io, owner, &cirrus_vga_io_ops, s,
2972                           "cirrus-io", 0x30);
2973     memory_region_set_flush_coalesced(&s->cirrus_vga_io);
2974     memory_region_add_subregion(system_io, 0x3b0, &s->cirrus_vga_io);
2975
2976     memory_region_init(&s->low_mem_container, owner,
2977                        "cirrus-lowmem-container",
2978                        0x20000);
2979
2980     memory_region_init_io(&s->low_mem, owner, &cirrus_vga_mem_ops, s,
2981                           "cirrus-low-memory", 0x20000);
2982     memory_region_add_subregion(&s->low_mem_container, 0, &s->low_mem);
2983     for (i = 0; i < 2; ++i) {
2984         static const char *names[] = { "vga.bank0", "vga.bank1" };
2985         MemoryRegion *bank = &s->cirrus_bank[i];
2986         memory_region_init_alias(bank, owner, names[i], &s->vga.vram,
2987                                  0, 0x8000);
2988         memory_region_set_enabled(bank, false);
2989         memory_region_add_subregion_overlap(&s->low_mem_container, i * 0x8000,
2990                                             bank, 1);
2991     }
2992     memory_region_add_subregion_overlap(system_memory,
2993                                         0x000a0000,
2994                                         &s->low_mem_container,
2995                                         1);
2996     memory_region_set_coalescing(&s->low_mem);
2997
2998     /* I/O handler for LFB */
2999     memory_region_init_io(&s->cirrus_linear_io, owner, &cirrus_linear_io_ops, s,
3000                           "cirrus-linear-io", s->vga.vram_size_mb * MiB);
3001     memory_region_set_flush_coalesced(&s->cirrus_linear_io);
3002
3003     /* I/O handler for LFB */
3004     memory_region_init_io(&s->cirrus_linear_bitblt_io, owner,
3005                           &cirrus_linear_bitblt_io_ops,
3006                           s,
3007                           "cirrus-bitblt-mmio",
3008                           0x400000);
3009     memory_region_set_flush_coalesced(&s->cirrus_linear_bitblt_io);
3010
3011     /* I/O handler for memory-mapped I/O */
3012     memory_region_init_io(&s->cirrus_mmio_io, owner, &cirrus_mmio_io_ops, s,
3013                           "cirrus-mmio", CIRRUS_PNPMMIO_SIZE);
3014     memory_region_set_flush_coalesced(&s->cirrus_mmio_io);
3015
3016     s->real_vram_size =
3017         (s->device_id == CIRRUS_ID_CLGD5446) ? 4 * MiB : 2 * MiB;
3018
3019     /* XXX: s->vga.vram_size must be a power of two */
3020     s->cirrus_addr_mask = s->real_vram_size - 1;
3021     s->linear_mmio_mask = s->real_vram_size - 256;
3022
3023     s->vga.get_bpp = cirrus_get_bpp;
3024     s->vga.get_offsets = cirrus_get_offsets;
3025     s->vga.get_resolution = cirrus_get_resolution;
3026     s->vga.cursor_invalidate = cirrus_cursor_invalidate;
3027     s->vga.cursor_draw_line = cirrus_cursor_draw_line;
3028
3029     qemu_register_reset(cirrus_reset, s);
3030 }
3031
3032 /***************************************
3033  *
3034  *  ISA bus support
3035  *
3036  ***************************************/
3037
3038 static void isa_cirrus_vga_realizefn(DeviceState *dev, Error **errp)
3039 {
3040     ISADevice *isadev = ISA_DEVICE(dev);
3041     ISACirrusVGAState *d = ISA_CIRRUS_VGA(dev);
3042     VGACommonState *s = &d->cirrus_vga.vga;
3043
3044     /* follow real hardware, cirrus card emulated has 4 MB video memory.
3045        Also accept 8 MB/16 MB for backward compatibility. */
3046     if (s->vram_size_mb != 4 && s->vram_size_mb != 8 &&
3047         s->vram_size_mb != 16) {
3048         error_setg(errp, "Invalid cirrus_vga ram size '%u'",
3049                    s->vram_size_mb);
3050         return;
3051     }
3052     s->global_vmstate = true;
3053     vga_common_init(s, OBJECT(dev));
3054     cirrus_init_common(&d->cirrus_vga, OBJECT(dev), CIRRUS_ID_CLGD5430, 0,
3055                        isa_address_space(isadev),
3056                        isa_address_space_io(isadev));
3057     s->con = graphic_console_init(dev, 0, s->hw_ops, s);
3058     rom_add_vga(VGABIOS_CIRRUS_FILENAME);
3059     /* XXX ISA-LFB support */
3060     /* FIXME not qdev yet */
3061 }
3062
3063 static Property isa_cirrus_vga_properties[] = {
3064     DEFINE_PROP_UINT32("vgamem_mb", struct ISACirrusVGAState,
3065                        cirrus_vga.vga.vram_size_mb, 4),
3066     DEFINE_PROP_BOOL("blitter", struct ISACirrusVGAState,
3067                      cirrus_vga.enable_blitter, true),
3068     DEFINE_PROP_END_OF_LIST(),
3069 };
3070
3071 static void isa_cirrus_vga_class_init(ObjectClass *klass, void *data)
3072 {
3073     DeviceClass *dc = DEVICE_CLASS(klass);
3074
3075     dc->vmsd  = &vmstate_cirrus_vga;
3076     dc->realize = isa_cirrus_vga_realizefn;
3077     dc->props = isa_cirrus_vga_properties;
3078     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
3079 }
3080
3081 static const TypeInfo isa_cirrus_vga_info = {
3082     .name          = TYPE_ISA_CIRRUS_VGA,
3083     .parent        = TYPE_ISA_DEVICE,
3084     .instance_size = sizeof(ISACirrusVGAState),
3085     .class_init = isa_cirrus_vga_class_init,
3086 };
3087
3088 /***************************************
3089  *
3090  *  PCI bus support
3091  *
3092  ***************************************/
3093
3094 static void pci_cirrus_vga_realize(PCIDevice *dev, Error **errp)
3095 {
3096      PCICirrusVGAState *d = PCI_CIRRUS_VGA(dev);
3097      CirrusVGAState *s = &d->cirrus_vga;
3098      PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
3099      int16_t device_id = pc->device_id;
3100
3101      /* follow real hardware, cirrus card emulated has 4 MB video memory.
3102        Also accept 8 MB/16 MB for backward compatibility. */
3103      if (s->vga.vram_size_mb != 4 && s->vga.vram_size_mb != 8 &&
3104          s->vga.vram_size_mb != 16) {
3105          error_setg(errp, "Invalid cirrus_vga ram size '%u'",
3106                     s->vga.vram_size_mb);
3107          return;
3108      }
3109      /* setup VGA */
3110      vga_common_init(&s->vga, OBJECT(dev));
3111      cirrus_init_common(s, OBJECT(dev), device_id, 1, pci_address_space(dev),
3112                         pci_address_space_io(dev));
3113      s->vga.con = graphic_console_init(DEVICE(dev), 0, s->vga.hw_ops, &s->vga);
3114
3115      /* setup PCI */
3116
3117     memory_region_init(&s->pci_bar, OBJECT(dev), "cirrus-pci-bar0", 0x2000000);
3118
3119     /* XXX: add byte swapping apertures */
3120     memory_region_add_subregion(&s->pci_bar, 0, &s->cirrus_linear_io);
3121     memory_region_add_subregion(&s->pci_bar, 0x1000000,
3122                                 &s->cirrus_linear_bitblt_io);
3123
3124      /* setup memory space */
3125      /* memory #0 LFB */
3126      /* memory #1 memory-mapped I/O */
3127      /* XXX: s->vga.vram_size must be a power of two */
3128      pci_register_bar(&d->dev, 0, PCI_BASE_ADDRESS_MEM_PREFETCH, &s->pci_bar);
3129      if (device_id == CIRRUS_ID_CLGD5446) {
3130          pci_register_bar(&d->dev, 1, 0, &s->cirrus_mmio_io);
3131      }
3132 }
3133
3134 static Property pci_vga_cirrus_properties[] = {
3135     DEFINE_PROP_UINT32("vgamem_mb", struct PCICirrusVGAState,
3136                        cirrus_vga.vga.vram_size_mb, 4),
3137     DEFINE_PROP_BOOL("blitter", struct PCICirrusVGAState,
3138                      cirrus_vga.enable_blitter, true),
3139     DEFINE_PROP_BOOL("global-vmstate", struct PCICirrusVGAState,
3140                      cirrus_vga.vga.global_vmstate, false),
3141     DEFINE_PROP_END_OF_LIST(),
3142 };
3143
3144 static void cirrus_vga_class_init(ObjectClass *klass, void *data)
3145 {
3146     DeviceClass *dc = DEVICE_CLASS(klass);
3147     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
3148
3149     k->realize = pci_cirrus_vga_realize;
3150     k->romfile = VGABIOS_CIRRUS_FILENAME;
3151     k->vendor_id = PCI_VENDOR_ID_CIRRUS;
3152     k->device_id = CIRRUS_ID_CLGD5446;
3153     k->class_id = PCI_CLASS_DISPLAY_VGA;
3154     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
3155     dc->desc = "Cirrus CLGD 54xx VGA";
3156     dc->vmsd = &vmstate_pci_cirrus_vga;
3157     dc->props = pci_vga_cirrus_properties;
3158     dc->hotpluggable = false;
3159 }
3160
3161 static const TypeInfo cirrus_vga_info = {
3162     .name          = TYPE_PCI_CIRRUS_VGA,
3163     .parent        = TYPE_PCI_DEVICE,
3164     .instance_size = sizeof(PCICirrusVGAState),
3165     .class_init    = cirrus_vga_class_init,
3166     .interfaces = (InterfaceInfo[]) {
3167         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
3168         { },
3169     },
3170 };
3171
3172 static void cirrus_vga_register_types(void)
3173 {
3174     type_register_static(&isa_cirrus_vga_info);
3175     type_register_static(&cirrus_vga_info);
3176 }
3177
3178 type_init(cirrus_vga_register_types)
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