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Debugger single step without interrupts (Jason Wessel).
[qemu/qemu-JZ.git] / hw / cirrus_vga.c
blob4e9f98d3716bcd428129f82298fd48bdd3ba947d
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 "hw.h"
30 #include "pc.h"
31 #include "pci.h"
32 #include "console.h"
33 #include "vga_int.h"
34
35 /*
36 * TODO:
37 * - destination write mask support not complete (bits 5..7)
38 * - optimize linear mappings
39 * - optimize bitblt functions
40 */
41
42 //#define DEBUG_CIRRUS
43 //#define DEBUG_BITBLT
44
45 /***************************************
46 *
47 * definitions
48 *
49 ***************************************/
50
51 #define qemu_MIN(a,b) ((a) < (b) ? (a) : (b))
52
53 // ID
54 #define CIRRUS_ID_CLGD5422 (0x23<<2)
55 #define CIRRUS_ID_CLGD5426 (0x24<<2)
56 #define CIRRUS_ID_CLGD5424 (0x25<<2)
57 #define CIRRUS_ID_CLGD5428 (0x26<<2)
58 #define CIRRUS_ID_CLGD5430 (0x28<<2)
59 #define CIRRUS_ID_CLGD5434 (0x2A<<2)
60 #define CIRRUS_ID_CLGD5436 (0x2B<<2)
61 #define CIRRUS_ID_CLGD5446 (0x2E<<2)
62
63 // sequencer 0x07
64 #define CIRRUS_SR7_BPP_VGA 0x00
65 #define CIRRUS_SR7_BPP_SVGA 0x01
66 #define CIRRUS_SR7_BPP_MASK 0x0e
67 #define CIRRUS_SR7_BPP_8 0x00
68 #define CIRRUS_SR7_BPP_16_DOUBLEVCLK 0x02
69 #define CIRRUS_SR7_BPP_24 0x04
70 #define CIRRUS_SR7_BPP_16 0x06
71 #define CIRRUS_SR7_BPP_32 0x08
72 #define CIRRUS_SR7_ISAADDR_MASK 0xe0
73
74 // sequencer 0x0f
75 #define CIRRUS_MEMSIZE_512k 0x08
76 #define CIRRUS_MEMSIZE_1M 0x10
77 #define CIRRUS_MEMSIZE_2M 0x18
78 #define CIRRUS_MEMFLAGS_BANKSWITCH 0x80 // bank switching is enabled.
79
80 // sequencer 0x12
81 #define CIRRUS_CURSOR_SHOW 0x01
82 #define CIRRUS_CURSOR_HIDDENPEL 0x02
83 #define CIRRUS_CURSOR_LARGE 0x04 // 64x64 if set, 32x32 if clear
84
85 // sequencer 0x17
86 #define CIRRUS_BUSTYPE_VLBFAST 0x10
87 #define CIRRUS_BUSTYPE_PCI 0x20
88 #define CIRRUS_BUSTYPE_VLBSLOW 0x30
89 #define CIRRUS_BUSTYPE_ISA 0x38
90 #define CIRRUS_MMIO_ENABLE 0x04
91 #define CIRRUS_MMIO_USE_PCIADDR 0x40 // 0xb8000 if cleared.
92 #define CIRRUS_MEMSIZEEXT_DOUBLE 0x80
93
94 // control 0x0b
95 #define CIRRUS_BANKING_DUAL 0x01
96 #define CIRRUS_BANKING_GRANULARITY_16K 0x20 // set:16k, clear:4k
97
98 // control 0x30
99 #define CIRRUS_BLTMODE_BACKWARDS 0x01
100 #define CIRRUS_BLTMODE_MEMSYSDEST 0x02
101 #define CIRRUS_BLTMODE_MEMSYSSRC 0x04
102 #define CIRRUS_BLTMODE_TRANSPARENTCOMP 0x08
103 #define CIRRUS_BLTMODE_PATTERNCOPY 0x40
104 #define CIRRUS_BLTMODE_COLOREXPAND 0x80
105 #define CIRRUS_BLTMODE_PIXELWIDTHMASK 0x30
106 #define CIRRUS_BLTMODE_PIXELWIDTH8 0x00
107 #define CIRRUS_BLTMODE_PIXELWIDTH16 0x10
108 #define CIRRUS_BLTMODE_PIXELWIDTH24 0x20
109 #define CIRRUS_BLTMODE_PIXELWIDTH32 0x30
110
111 // control 0x31
112 #define CIRRUS_BLT_BUSY 0x01
113 #define CIRRUS_BLT_START 0x02
114 #define CIRRUS_BLT_RESET 0x04
115 #define CIRRUS_BLT_FIFOUSED 0x10
116 #define CIRRUS_BLT_AUTOSTART 0x80
117
118 // control 0x32
119 #define CIRRUS_ROP_0 0x00
120 #define CIRRUS_ROP_SRC_AND_DST 0x05
121 #define CIRRUS_ROP_NOP 0x06
122 #define CIRRUS_ROP_SRC_AND_NOTDST 0x09
123 #define CIRRUS_ROP_NOTDST 0x0b
124 #define CIRRUS_ROP_SRC 0x0d
125 #define CIRRUS_ROP_1 0x0e
126 #define CIRRUS_ROP_NOTSRC_AND_DST 0x50
127 #define CIRRUS_ROP_SRC_XOR_DST 0x59
128 #define CIRRUS_ROP_SRC_OR_DST 0x6d
129 #define CIRRUS_ROP_NOTSRC_OR_NOTDST 0x90
130 #define CIRRUS_ROP_SRC_NOTXOR_DST 0x95
131 #define CIRRUS_ROP_SRC_OR_NOTDST 0xad
132 #define CIRRUS_ROP_NOTSRC 0xd0
133 #define CIRRUS_ROP_NOTSRC_OR_DST 0xd6
134 #define CIRRUS_ROP_NOTSRC_AND_NOTDST 0xda
135
136 #define CIRRUS_ROP_NOP_INDEX 2
137 #define CIRRUS_ROP_SRC_INDEX 5
138
139 // control 0x33
140 #define CIRRUS_BLTMODEEXT_SOLIDFILL 0x04
141 #define CIRRUS_BLTMODEEXT_COLOREXPINV 0x02
142 #define CIRRUS_BLTMODEEXT_DWORDGRANULARITY 0x01
143
144 // memory-mapped IO
145 #define CIRRUS_MMIO_BLTBGCOLOR 0x00 // dword
146 #define CIRRUS_MMIO_BLTFGCOLOR 0x04 // dword
147 #define CIRRUS_MMIO_BLTWIDTH 0x08 // word
148 #define CIRRUS_MMIO_BLTHEIGHT 0x0a // word
149 #define CIRRUS_MMIO_BLTDESTPITCH 0x0c // word
150 #define CIRRUS_MMIO_BLTSRCPITCH 0x0e // word
151 #define CIRRUS_MMIO_BLTDESTADDR 0x10 // dword
152 #define CIRRUS_MMIO_BLTSRCADDR 0x14 // dword
153 #define CIRRUS_MMIO_BLTWRITEMASK 0x17 // byte
154 #define CIRRUS_MMIO_BLTMODE 0x18 // byte
155 #define CIRRUS_MMIO_BLTROP 0x1a // byte
156 #define CIRRUS_MMIO_BLTMODEEXT 0x1b // byte
157 #define CIRRUS_MMIO_BLTTRANSPARENTCOLOR 0x1c // word?
158 #define CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK 0x20 // word?
159 #define CIRRUS_MMIO_LINEARDRAW_START_X 0x24 // word
160 #define CIRRUS_MMIO_LINEARDRAW_START_Y 0x26 // word
161 #define CIRRUS_MMIO_LINEARDRAW_END_X 0x28 // word
162 #define CIRRUS_MMIO_LINEARDRAW_END_Y 0x2a // word
163 #define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_INC 0x2c // byte
164 #define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_ROLLOVER 0x2d // byte
165 #define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_MASK 0x2e // byte
166 #define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_ACCUM 0x2f // byte
167 #define CIRRUS_MMIO_BRESENHAM_K1 0x30 // word
168 #define CIRRUS_MMIO_BRESENHAM_K3 0x32 // word
169 #define CIRRUS_MMIO_BRESENHAM_ERROR 0x34 // word
170 #define CIRRUS_MMIO_BRESENHAM_DELTA_MAJOR 0x36 // word
171 #define CIRRUS_MMIO_BRESENHAM_DIRECTION 0x38 // byte
172 #define CIRRUS_MMIO_LINEDRAW_MODE 0x39 // byte
173 #define CIRRUS_MMIO_BLTSTATUS 0x40 // byte
174
175 // PCI 0x00: vendor, 0x02: device
176 #define PCI_VENDOR_CIRRUS 0x1013
177 #define PCI_DEVICE_CLGD5462 0x00d0
178 #define PCI_DEVICE_CLGD5465 0x00d6
179
180 // PCI 0x04: command(word), 0x06(word): status
181 #define PCI_COMMAND_IOACCESS 0x0001
182 #define PCI_COMMAND_MEMACCESS 0x0002
183 #define PCI_COMMAND_BUSMASTER 0x0004
184 #define PCI_COMMAND_SPECIALCYCLE 0x0008
185 #define PCI_COMMAND_MEMWRITEINVALID 0x0010
186 #define PCI_COMMAND_PALETTESNOOPING 0x0020
187 #define PCI_COMMAND_PARITYDETECTION 0x0040
188 #define PCI_COMMAND_ADDRESSDATASTEPPING 0x0080
189 #define PCI_COMMAND_SERR 0x0100
190 #define PCI_COMMAND_BACKTOBACKTRANS 0x0200
191 // PCI 0x08, 0xff000000 (0x09-0x0b:class,0x08:rev)
192 #define PCI_CLASS_BASE_DISPLAY 0x03
193 // PCI 0x08, 0x00ff0000
194 #define PCI_CLASS_SUB_VGA 0x00
195 // PCI 0x0c, 0x00ff0000 (0x0c:cacheline,0x0d:latency,0x0e:headertype,0x0f:Built-in self test)
196 #define PCI_CLASS_HEADERTYPE_00h 0x00
197 // 0x10-0x3f (headertype 00h)
198 // PCI 0x10,0x14,0x18,0x1c,0x20,0x24: base address mapping registers
199 // 0x10: MEMBASE, 0x14: IOBASE(hard-coded in XFree86 3.x)
200 #define PCI_MAP_MEM 0x0
201 #define PCI_MAP_IO 0x1
202 #define PCI_MAP_MEM_ADDR_MASK (~0xf)
203 #define PCI_MAP_IO_ADDR_MASK (~0x3)
204 #define PCI_MAP_MEMFLAGS_32BIT 0x0
205 #define PCI_MAP_MEMFLAGS_32BIT_1M 0x1
206 #define PCI_MAP_MEMFLAGS_64BIT 0x4
207 #define PCI_MAP_MEMFLAGS_CACHEABLE 0x8
208 // PCI 0x28: cardbus CIS pointer
209 // PCI 0x2c: subsystem vendor id, 0x2e: subsystem id
210 // PCI 0x30: expansion ROM base address
211 #define PCI_ROMBIOS_ENABLED 0x1
212 // PCI 0x34: 0xffffff00=reserved, 0x000000ff=capabilities pointer
213 // PCI 0x38: reserved
214 // PCI 0x3c: 0x3c=int-line, 0x3d=int-pin, 0x3e=min-gnt, 0x3f=maax-lat
215
216 #define CIRRUS_PNPMMIO_SIZE 0x1000
217
218
219 /* I/O and memory hook */
220 #define CIRRUS_HOOK_NOT_HANDLED 0
221 #define CIRRUS_HOOK_HANDLED 1
222
223 #define BLTUNSAFE(s) \
224 ( \
225 ( /* check dst is within bounds */ \
226 (s)->cirrus_blt_height * (s)->cirrus_blt_dstpitch \
227 + ((s)->cirrus_blt_dstaddr & (s)->cirrus_addr_mask) > \
228 (s)->vram_size \
229 ) || \
230 ( /* check src is within bounds */ \
231 (s)->cirrus_blt_height * (s)->cirrus_blt_srcpitch \
232 + ((s)->cirrus_blt_srcaddr & (s)->cirrus_addr_mask) > \
233 (s)->vram_size \
234 ) \
235 )
236
237 struct CirrusVGAState;
238 typedef void (*cirrus_bitblt_rop_t) (struct CirrusVGAState *s,
239 uint8_t * dst, const uint8_t * src,
240 int dstpitch, int srcpitch,
241 int bltwidth, int bltheight);
242 typedef void (*cirrus_fill_t)(struct CirrusVGAState *s,
243 uint8_t *dst, int dst_pitch, int width, int height);
244
245 typedef struct CirrusVGAState {
246 VGA_STATE_COMMON
247
248 int cirrus_linear_io_addr;
249 int cirrus_linear_bitblt_io_addr;
250 int cirrus_mmio_io_addr;
251 uint32_t cirrus_addr_mask;
252 uint32_t linear_mmio_mask;
253 uint8_t cirrus_shadow_gr0;
254 uint8_t cirrus_shadow_gr1;
255 uint8_t cirrus_hidden_dac_lockindex;
256 uint8_t cirrus_hidden_dac_data;
257 uint32_t cirrus_bank_base[2];
258 uint32_t cirrus_bank_limit[2];
259 uint8_t cirrus_hidden_palette[48];
260 uint32_t hw_cursor_x;
261 uint32_t hw_cursor_y;
262 int cirrus_blt_pixelwidth;
263 int cirrus_blt_width;
264 int cirrus_blt_height;
265 int cirrus_blt_dstpitch;
266 int cirrus_blt_srcpitch;
267 uint32_t cirrus_blt_fgcol;
268 uint32_t cirrus_blt_bgcol;
269 uint32_t cirrus_blt_dstaddr;
270 uint32_t cirrus_blt_srcaddr;
271 uint8_t cirrus_blt_mode;
272 uint8_t cirrus_blt_modeext;
273 cirrus_bitblt_rop_t cirrus_rop;
274 #define CIRRUS_BLTBUFSIZE (2048 * 4) /* one line width */
275 uint8_t cirrus_bltbuf[CIRRUS_BLTBUFSIZE];
276 uint8_t *cirrus_srcptr;
277 uint8_t *cirrus_srcptr_end;
278 uint32_t cirrus_srccounter;
279 /* hwcursor display state */
280 int last_hw_cursor_size;
281 int last_hw_cursor_x;
282 int last_hw_cursor_y;
283 int last_hw_cursor_y_start;
284 int last_hw_cursor_y_end;
285 int real_vram_size; /* XXX: suppress that */
286 CPUWriteMemoryFunc **cirrus_linear_write;
287 } CirrusVGAState;
288
289 typedef struct PCICirrusVGAState {
290 PCIDevice dev;
291 CirrusVGAState cirrus_vga;
292 } PCICirrusVGAState;
293
294 static uint8_t rop_to_index[256];
295
296 /***************************************
297 *
298 * prototypes.
299 *
300 ***************************************/
301
302
303 static void cirrus_bitblt_reset(CirrusVGAState *s);
304 static void cirrus_update_memory_access(CirrusVGAState *s);
305
306 /***************************************
307 *
308 * raster operations
309 *
310 ***************************************/
311
312 static void cirrus_bitblt_rop_nop(CirrusVGAState *s,
313 uint8_t *dst,const uint8_t *src,
314 int dstpitch,int srcpitch,
315 int bltwidth,int bltheight)
316 {
317 }
318
319 static void cirrus_bitblt_fill_nop(CirrusVGAState *s,
320 uint8_t *dst,
321 int dstpitch, int bltwidth,int bltheight)
322 {
323 }
324
325 #define ROP_NAME 0
326 #define ROP_OP(d, s) d = 0
327 #include "cirrus_vga_rop.h"
328
329 #define ROP_NAME src_and_dst
330 #define ROP_OP(d, s) d = (s) & (d)
331 #include "cirrus_vga_rop.h"
332
333 #define ROP_NAME src_and_notdst
334 #define ROP_OP(d, s) d = (s) & (~(d))
335 #include "cirrus_vga_rop.h"
336
337 #define ROP_NAME notdst
338 #define ROP_OP(d, s) d = ~(d)
339 #include "cirrus_vga_rop.h"
340
341 #define ROP_NAME src
342 #define ROP_OP(d, s) d = s
343 #include "cirrus_vga_rop.h"
344
345 #define ROP_NAME 1
346 #define ROP_OP(d, s) d = ~0
347 #include "cirrus_vga_rop.h"
348
349 #define ROP_NAME notsrc_and_dst
350 #define ROP_OP(d, s) d = (~(s)) & (d)
351 #include "cirrus_vga_rop.h"
352
353 #define ROP_NAME src_xor_dst
354 #define ROP_OP(d, s) d = (s) ^ (d)
355 #include "cirrus_vga_rop.h"
356
357 #define ROP_NAME src_or_dst
358 #define ROP_OP(d, s) d = (s) | (d)
359 #include "cirrus_vga_rop.h"
360
361 #define ROP_NAME notsrc_or_notdst
362 #define ROP_OP(d, s) d = (~(s)) | (~(d))
363 #include "cirrus_vga_rop.h"
364
365 #define ROP_NAME src_notxor_dst
366 #define ROP_OP(d, s) d = ~((s) ^ (d))
367 #include "cirrus_vga_rop.h"
368
369 #define ROP_NAME src_or_notdst
370 #define ROP_OP(d, s) d = (s) | (~(d))
371 #include "cirrus_vga_rop.h"
372
373 #define ROP_NAME notsrc
374 #define ROP_OP(d, s) d = (~(s))
375 #include "cirrus_vga_rop.h"
376
377 #define ROP_NAME notsrc_or_dst
378 #define ROP_OP(d, s) d = (~(s)) | (d)
379 #include "cirrus_vga_rop.h"
380
381 #define ROP_NAME notsrc_and_notdst
382 #define ROP_OP(d, s) d = (~(s)) & (~(d))
383 #include "cirrus_vga_rop.h"
384
385 static const cirrus_bitblt_rop_t cirrus_fwd_rop[16] = {
386 cirrus_bitblt_rop_fwd_0,
387 cirrus_bitblt_rop_fwd_src_and_dst,
388 cirrus_bitblt_rop_nop,
389 cirrus_bitblt_rop_fwd_src_and_notdst,
390 cirrus_bitblt_rop_fwd_notdst,
391 cirrus_bitblt_rop_fwd_src,
392 cirrus_bitblt_rop_fwd_1,
393 cirrus_bitblt_rop_fwd_notsrc_and_dst,
394 cirrus_bitblt_rop_fwd_src_xor_dst,
395 cirrus_bitblt_rop_fwd_src_or_dst,
396 cirrus_bitblt_rop_fwd_notsrc_or_notdst,
397 cirrus_bitblt_rop_fwd_src_notxor_dst,
398 cirrus_bitblt_rop_fwd_src_or_notdst,
399 cirrus_bitblt_rop_fwd_notsrc,
400 cirrus_bitblt_rop_fwd_notsrc_or_dst,
401 cirrus_bitblt_rop_fwd_notsrc_and_notdst,
402 };
403
404 static const cirrus_bitblt_rop_t cirrus_bkwd_rop[16] = {
405 cirrus_bitblt_rop_bkwd_0,
406 cirrus_bitblt_rop_bkwd_src_and_dst,
407 cirrus_bitblt_rop_nop,
408 cirrus_bitblt_rop_bkwd_src_and_notdst,
409 cirrus_bitblt_rop_bkwd_notdst,
410 cirrus_bitblt_rop_bkwd_src,
411 cirrus_bitblt_rop_bkwd_1,
412 cirrus_bitblt_rop_bkwd_notsrc_and_dst,
413 cirrus_bitblt_rop_bkwd_src_xor_dst,
414 cirrus_bitblt_rop_bkwd_src_or_dst,
415 cirrus_bitblt_rop_bkwd_notsrc_or_notdst,
416 cirrus_bitblt_rop_bkwd_src_notxor_dst,
417 cirrus_bitblt_rop_bkwd_src_or_notdst,
418 cirrus_bitblt_rop_bkwd_notsrc,
419 cirrus_bitblt_rop_bkwd_notsrc_or_dst,
420 cirrus_bitblt_rop_bkwd_notsrc_and_notdst,
421 };
422
423 #define TRANSP_ROP(name) {\
424 name ## _8,\
425 name ## _16,\
426 }
427 #define TRANSP_NOP(func) {\
428 func,\
429 func,\
430 }
431
432 static const cirrus_bitblt_rop_t cirrus_fwd_transp_rop[16][2] = {
433 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_0),
434 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_and_dst),
435 TRANSP_NOP(cirrus_bitblt_rop_nop),
436 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_and_notdst),
437 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notdst),
438 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src),
439 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_1),
440 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_and_dst),
441 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_xor_dst),
442 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_or_dst),
443 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_or_notdst),
444 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_notxor_dst),
445 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_or_notdst),
446 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc),
447 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_or_dst),
448 TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_and_notdst),
449 };
450
451 static const cirrus_bitblt_rop_t cirrus_bkwd_transp_rop[16][2] = {
452 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_0),
453 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_and_dst),
454 TRANSP_NOP(cirrus_bitblt_rop_nop),
455 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_and_notdst),
456 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notdst),
457 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src),
458 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_1),
459 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_and_dst),
460 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_xor_dst),
461 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_or_dst),
462 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_or_notdst),
463 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_notxor_dst),
464 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_or_notdst),
465 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc),
466 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_or_dst),
467 TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_and_notdst),
468 };
469
470 #define ROP2(name) {\
471 name ## _8,\
472 name ## _16,\
473 name ## _24,\
474 name ## _32,\
475 }
476
477 #define ROP_NOP2(func) {\
478 func,\
479 func,\
480 func,\
481 func,\
482 }
483
484 static const cirrus_bitblt_rop_t cirrus_patternfill[16][4] = {
485 ROP2(cirrus_patternfill_0),
486 ROP2(cirrus_patternfill_src_and_dst),
487 ROP_NOP2(cirrus_bitblt_rop_nop),
488 ROP2(cirrus_patternfill_src_and_notdst),
489 ROP2(cirrus_patternfill_notdst),
490 ROP2(cirrus_patternfill_src),
491 ROP2(cirrus_patternfill_1),
492 ROP2(cirrus_patternfill_notsrc_and_dst),
493 ROP2(cirrus_patternfill_src_xor_dst),
494 ROP2(cirrus_patternfill_src_or_dst),
495 ROP2(cirrus_patternfill_notsrc_or_notdst),
496 ROP2(cirrus_patternfill_src_notxor_dst),
497 ROP2(cirrus_patternfill_src_or_notdst),
498 ROP2(cirrus_patternfill_notsrc),
499 ROP2(cirrus_patternfill_notsrc_or_dst),
500 ROP2(cirrus_patternfill_notsrc_and_notdst),
501 };
502
503 static const cirrus_bitblt_rop_t cirrus_colorexpand_transp[16][4] = {
504 ROP2(cirrus_colorexpand_transp_0),
505 ROP2(cirrus_colorexpand_transp_src_and_dst),
506 ROP_NOP2(cirrus_bitblt_rop_nop),
507 ROP2(cirrus_colorexpand_transp_src_and_notdst),
508 ROP2(cirrus_colorexpand_transp_notdst),
509 ROP2(cirrus_colorexpand_transp_src),
510 ROP2(cirrus_colorexpand_transp_1),
511 ROP2(cirrus_colorexpand_transp_notsrc_and_dst),
512 ROP2(cirrus_colorexpand_transp_src_xor_dst),
513 ROP2(cirrus_colorexpand_transp_src_or_dst),
514 ROP2(cirrus_colorexpand_transp_notsrc_or_notdst),
515 ROP2(cirrus_colorexpand_transp_src_notxor_dst),
516 ROP2(cirrus_colorexpand_transp_src_or_notdst),
517 ROP2(cirrus_colorexpand_transp_notsrc),
518 ROP2(cirrus_colorexpand_transp_notsrc_or_dst),
519 ROP2(cirrus_colorexpand_transp_notsrc_and_notdst),
520 };
521
522 static const cirrus_bitblt_rop_t cirrus_colorexpand[16][4] = {
523 ROP2(cirrus_colorexpand_0),
524 ROP2(cirrus_colorexpand_src_and_dst),
525 ROP_NOP2(cirrus_bitblt_rop_nop),
526 ROP2(cirrus_colorexpand_src_and_notdst),
527 ROP2(cirrus_colorexpand_notdst),
528 ROP2(cirrus_colorexpand_src),
529 ROP2(cirrus_colorexpand_1),
530 ROP2(cirrus_colorexpand_notsrc_and_dst),
531 ROP2(cirrus_colorexpand_src_xor_dst),
532 ROP2(cirrus_colorexpand_src_or_dst),
533 ROP2(cirrus_colorexpand_notsrc_or_notdst),
534 ROP2(cirrus_colorexpand_src_notxor_dst),
535 ROP2(cirrus_colorexpand_src_or_notdst),
536 ROP2(cirrus_colorexpand_notsrc),
537 ROP2(cirrus_colorexpand_notsrc_or_dst),
538 ROP2(cirrus_colorexpand_notsrc_and_notdst),
539 };
540
541 static const cirrus_bitblt_rop_t cirrus_colorexpand_pattern_transp[16][4] = {
542 ROP2(cirrus_colorexpand_pattern_transp_0),
543 ROP2(cirrus_colorexpand_pattern_transp_src_and_dst),
544 ROP_NOP2(cirrus_bitblt_rop_nop),
545 ROP2(cirrus_colorexpand_pattern_transp_src_and_notdst),
546 ROP2(cirrus_colorexpand_pattern_transp_notdst),
547 ROP2(cirrus_colorexpand_pattern_transp_src),
548 ROP2(cirrus_colorexpand_pattern_transp_1),
549 ROP2(cirrus_colorexpand_pattern_transp_notsrc_and_dst),
550 ROP2(cirrus_colorexpand_pattern_transp_src_xor_dst),
551 ROP2(cirrus_colorexpand_pattern_transp_src_or_dst),
552 ROP2(cirrus_colorexpand_pattern_transp_notsrc_or_notdst),
553 ROP2(cirrus_colorexpand_pattern_transp_src_notxor_dst),
554 ROP2(cirrus_colorexpand_pattern_transp_src_or_notdst),
555 ROP2(cirrus_colorexpand_pattern_transp_notsrc),
556 ROP2(cirrus_colorexpand_pattern_transp_notsrc_or_dst),
557 ROP2(cirrus_colorexpand_pattern_transp_notsrc_and_notdst),
558 };
559
560 static const cirrus_bitblt_rop_t cirrus_colorexpand_pattern[16][4] = {
561 ROP2(cirrus_colorexpand_pattern_0),
562 ROP2(cirrus_colorexpand_pattern_src_and_dst),
563 ROP_NOP2(cirrus_bitblt_rop_nop),
564 ROP2(cirrus_colorexpand_pattern_src_and_notdst),
565 ROP2(cirrus_colorexpand_pattern_notdst),
566 ROP2(cirrus_colorexpand_pattern_src),
567 ROP2(cirrus_colorexpand_pattern_1),
568 ROP2(cirrus_colorexpand_pattern_notsrc_and_dst),
569 ROP2(cirrus_colorexpand_pattern_src_xor_dst),
570 ROP2(cirrus_colorexpand_pattern_src_or_dst),
571 ROP2(cirrus_colorexpand_pattern_notsrc_or_notdst),
572 ROP2(cirrus_colorexpand_pattern_src_notxor_dst),
573 ROP2(cirrus_colorexpand_pattern_src_or_notdst),
574 ROP2(cirrus_colorexpand_pattern_notsrc),
575 ROP2(cirrus_colorexpand_pattern_notsrc_or_dst),
576 ROP2(cirrus_colorexpand_pattern_notsrc_and_notdst),
577 };
578
579 static const cirrus_fill_t cirrus_fill[16][4] = {
580 ROP2(cirrus_fill_0),
581 ROP2(cirrus_fill_src_and_dst),
582 ROP_NOP2(cirrus_bitblt_fill_nop),
583 ROP2(cirrus_fill_src_and_notdst),
584 ROP2(cirrus_fill_notdst),
585 ROP2(cirrus_fill_src),
586 ROP2(cirrus_fill_1),
587 ROP2(cirrus_fill_notsrc_and_dst),
588 ROP2(cirrus_fill_src_xor_dst),
589 ROP2(cirrus_fill_src_or_dst),
590 ROP2(cirrus_fill_notsrc_or_notdst),
591 ROP2(cirrus_fill_src_notxor_dst),
592 ROP2(cirrus_fill_src_or_notdst),
593 ROP2(cirrus_fill_notsrc),
594 ROP2(cirrus_fill_notsrc_or_dst),
595 ROP2(cirrus_fill_notsrc_and_notdst),
596 };
597
598 static inline void cirrus_bitblt_fgcol(CirrusVGAState *s)
599 {
600 unsigned int color;
601 switch (s->cirrus_blt_pixelwidth) {
602 case 1:
603 s->cirrus_blt_fgcol = s->cirrus_shadow_gr1;
604 break;
605 case 2:
606 color = s->cirrus_shadow_gr1 | (s->gr[0x11] << 8);
607 s->cirrus_blt_fgcol = le16_to_cpu(color);
608 break;
609 case 3:
610 s->cirrus_blt_fgcol = s->cirrus_shadow_gr1 |
611 (s->gr[0x11] << 8) | (s->gr[0x13] << 16);
612 break;
613 default:
614 case 4:
615 color = s->cirrus_shadow_gr1 | (s->gr[0x11] << 8) |
616 (s->gr[0x13] << 16) | (s->gr[0x15] << 24);
617 s->cirrus_blt_fgcol = le32_to_cpu(color);
618 break;
619 }
620 }
621
622 static inline void cirrus_bitblt_bgcol(CirrusVGAState *s)
623 {
624 unsigned int color;
625 switch (s->cirrus_blt_pixelwidth) {
626 case 1:
627 s->cirrus_blt_bgcol = s->cirrus_shadow_gr0;
628 break;
629 case 2:
630 color = s->cirrus_shadow_gr0 | (s->gr[0x10] << 8);
631 s->cirrus_blt_bgcol = le16_to_cpu(color);
632 break;
633 case 3:
634 s->cirrus_blt_bgcol = s->cirrus_shadow_gr0 |
635 (s->gr[0x10] << 8) | (s->gr[0x12] << 16);
636 break;
637 default:
638 case 4:
639 color = s->cirrus_shadow_gr0 | (s->gr[0x10] << 8) |
640 (s->gr[0x12] << 16) | (s->gr[0x14] << 24);
641 s->cirrus_blt_bgcol = le32_to_cpu(color);
642 break;
643 }
644 }
645
646 static void cirrus_invalidate_region(CirrusVGAState * s, int off_begin,
647 int off_pitch, int bytesperline,
648 int lines)
649 {
650 int y;
651 int off_cur;
652 int off_cur_end;
653
654 for (y = 0; y < lines; y++) {
655 off_cur = off_begin;
656 off_cur_end = (off_cur + bytesperline) & s->cirrus_addr_mask;
657 off_cur &= TARGET_PAGE_MASK;
658 while (off_cur < off_cur_end) {
659 cpu_physical_memory_set_dirty(s->vram_offset + off_cur);
660 off_cur += TARGET_PAGE_SIZE;
661 }
662 off_begin += off_pitch;
663 }
664 }
665
666 static int cirrus_bitblt_common_patterncopy(CirrusVGAState * s,
667 const uint8_t * src)
668 {
669 uint8_t *dst;
670
671 dst = s->vram_ptr + (s->cirrus_blt_dstaddr & s->cirrus_addr_mask);
672
673 if (BLTUNSAFE(s))
674 return 0;
675
676 (*s->cirrus_rop) (s, dst, src,
677 s->cirrus_blt_dstpitch, 0,
678 s->cirrus_blt_width, s->cirrus_blt_height);
679 cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
680 s->cirrus_blt_dstpitch, s->cirrus_blt_width,
681 s->cirrus_blt_height);
682 return 1;
683 }
684
685 /* fill */
686
687 static int cirrus_bitblt_solidfill(CirrusVGAState *s, int blt_rop)
688 {
689 cirrus_fill_t rop_func;
690
691 if (BLTUNSAFE(s))
692 return 0;
693 rop_func = cirrus_fill[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
694 rop_func(s, s->vram_ptr + (s->cirrus_blt_dstaddr & s->cirrus_addr_mask),
695 s->cirrus_blt_dstpitch,
696 s->cirrus_blt_width, s->cirrus_blt_height);
697 cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
698 s->cirrus_blt_dstpitch, s->cirrus_blt_width,
699 s->cirrus_blt_height);
700 cirrus_bitblt_reset(s);
701 return 1;
702 }
703
704 /***************************************
705 *
706 * bitblt (video-to-video)
707 *
708 ***************************************/
709
710 static int cirrus_bitblt_videotovideo_patterncopy(CirrusVGAState * s)
711 {
712 return cirrus_bitblt_common_patterncopy(s,
713 s->vram_ptr + ((s->cirrus_blt_srcaddr & ~7) &
714 s->cirrus_addr_mask));
715 }
716
717 static void cirrus_do_copy(CirrusVGAState *s, int dst, int src, int w, int h)
718 {
719 int sx, sy;
720 int dx, dy;
721 int width, height;
722 int depth;
723 int notify = 0;
724
725 depth = s->get_bpp((VGAState *)s) / 8;
726 s->get_resolution((VGAState *)s, &width, &height);
727
728 /* extra x, y */
729 sx = (src % (width * depth)) / depth;
730 sy = (src / (width * depth));
731 dx = (dst % (width *depth)) / depth;
732 dy = (dst / (width * depth));
733
734 /* normalize width */
735 w /= depth;
736
737 /* if we're doing a backward copy, we have to adjust
738 our x/y to be the upper left corner (instead of the lower
739 right corner) */
740 if (s->cirrus_blt_dstpitch < 0) {
741 sx -= (s->cirrus_blt_width / depth) - 1;
742 dx -= (s->cirrus_blt_width / depth) - 1;
743 sy -= s->cirrus_blt_height - 1;
744 dy -= s->cirrus_blt_height - 1;
745 }
746
747 /* are we in the visible portion of memory? */
748 if (sx >= 0 && sy >= 0 && dx >= 0 && dy >= 0 &&
749 (sx + w) <= width && (sy + h) <= height &&
750 (dx + w) <= width && (dy + h) <= height) {
751 notify = 1;
752 }
753
754 /* make to sure only copy if it's a plain copy ROP */
755 if (*s->cirrus_rop != cirrus_bitblt_rop_fwd_src &&
756 *s->cirrus_rop != cirrus_bitblt_rop_bkwd_src)
757 notify = 0;
758
759 /* we have to flush all pending changes so that the copy
760 is generated at the appropriate moment in time */
761 if (notify)
762 vga_hw_update();
763
764 (*s->cirrus_rop) (s, s->vram_ptr +
765 (s->cirrus_blt_dstaddr & s->cirrus_addr_mask),
766 s->vram_ptr +
767 (s->cirrus_blt_srcaddr & s->cirrus_addr_mask),
768 s->cirrus_blt_dstpitch, s->cirrus_blt_srcpitch,
769 s->cirrus_blt_width, s->cirrus_blt_height);
770
771 if (notify)
772 s->ds->dpy_copy(s->ds,
773 sx, sy, dx, dy,
774 s->cirrus_blt_width / depth,
775 s->cirrus_blt_height);
776
777 /* we don't have to notify the display that this portion has
778 changed since dpy_copy implies this */
779
780 if (!notify)
781 cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
782 s->cirrus_blt_dstpitch, s->cirrus_blt_width,
783 s->cirrus_blt_height);
784 }
785
786 static int cirrus_bitblt_videotovideo_copy(CirrusVGAState * s)
787 {
788 if (s->ds->dpy_copy) {
789 cirrus_do_copy(s, s->cirrus_blt_dstaddr - s->start_addr,
790 s->cirrus_blt_srcaddr - s->start_addr,
791 s->cirrus_blt_width, s->cirrus_blt_height);
792 } else {
793
794 if (BLTUNSAFE(s))
795 return 0;
796
797 (*s->cirrus_rop) (s, s->vram_ptr +
798 (s->cirrus_blt_dstaddr & s->cirrus_addr_mask),
799 s->vram_ptr +
800 (s->cirrus_blt_srcaddr & s->cirrus_addr_mask),
801 s->cirrus_blt_dstpitch, s->cirrus_blt_srcpitch,
802 s->cirrus_blt_width, s->cirrus_blt_height);
803
804 cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
805 s->cirrus_blt_dstpitch, s->cirrus_blt_width,
806 s->cirrus_blt_height);
807 }
808
809 return 1;
810 }
811
812 /***************************************
813 *
814 * bitblt (cpu-to-video)
815 *
816 ***************************************/
817
818 static void cirrus_bitblt_cputovideo_next(CirrusVGAState * s)
819 {
820 int copy_count;
821 uint8_t *end_ptr;
822
823 if (s->cirrus_srccounter > 0) {
824 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
825 cirrus_bitblt_common_patterncopy(s, s->cirrus_bltbuf);
826 the_end:
827 s->cirrus_srccounter = 0;
828 cirrus_bitblt_reset(s);
829 } else {
830 /* at least one scan line */
831 do {
832 (*s->cirrus_rop)(s, s->vram_ptr +
833 (s->cirrus_blt_dstaddr & s->cirrus_addr_mask),
834 s->cirrus_bltbuf, 0, 0, s->cirrus_blt_width, 1);
835 cirrus_invalidate_region(s, s->cirrus_blt_dstaddr, 0,
836 s->cirrus_blt_width, 1);
837 s->cirrus_blt_dstaddr += s->cirrus_blt_dstpitch;
838 s->cirrus_srccounter -= s->cirrus_blt_srcpitch;
839 if (s->cirrus_srccounter <= 0)
840 goto the_end;
841 /* more bytes than needed can be transfered because of
842 word alignment, so we keep them for the next line */
843 /* XXX: keep alignment to speed up transfer */
844 end_ptr = s->cirrus_bltbuf + s->cirrus_blt_srcpitch;
845 copy_count = s->cirrus_srcptr_end - end_ptr;
846 memmove(s->cirrus_bltbuf, end_ptr, copy_count);
847 s->cirrus_srcptr = s->cirrus_bltbuf + copy_count;
848 s->cirrus_srcptr_end = s->cirrus_bltbuf + s->cirrus_blt_srcpitch;
849 } while (s->cirrus_srcptr >= s->cirrus_srcptr_end);
850 }
851 }
852 }
853
854 /***************************************
855 *
856 * bitblt wrapper
857 *
858 ***************************************/
859
860 static void cirrus_bitblt_reset(CirrusVGAState * s)
861 {
862 s->gr[0x31] &=
863 ~(CIRRUS_BLT_START | CIRRUS_BLT_BUSY | CIRRUS_BLT_FIFOUSED);
864 s->cirrus_srcptr = &s->cirrus_bltbuf[0];
865 s->cirrus_srcptr_end = &s->cirrus_bltbuf[0];
866 s->cirrus_srccounter = 0;
867 cirrus_update_memory_access(s);
868 }
869
870 static int cirrus_bitblt_cputovideo(CirrusVGAState * s)
871 {
872 int w;
873
874 s->cirrus_blt_mode &= ~CIRRUS_BLTMODE_MEMSYSSRC;
875 s->cirrus_srcptr = &s->cirrus_bltbuf[0];
876 s->cirrus_srcptr_end = &s->cirrus_bltbuf[0];
877
878 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
879 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_COLOREXPAND) {
880 s->cirrus_blt_srcpitch = 8;
881 } else {
882 /* XXX: check for 24 bpp */
883 s->cirrus_blt_srcpitch = 8 * 8 * s->cirrus_blt_pixelwidth;
884 }
885 s->cirrus_srccounter = s->cirrus_blt_srcpitch;
886 } else {
887 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_COLOREXPAND) {
888 w = s->cirrus_blt_width / s->cirrus_blt_pixelwidth;
889 if (s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_DWORDGRANULARITY)
890 s->cirrus_blt_srcpitch = ((w + 31) >> 5);
891 else
892 s->cirrus_blt_srcpitch = ((w + 7) >> 3);
893 } else {
894 /* always align input size to 32 bits */
895 s->cirrus_blt_srcpitch = (s->cirrus_blt_width + 3) & ~3;
896 }
897 s->cirrus_srccounter = s->cirrus_blt_srcpitch * s->cirrus_blt_height;
898 }
899 s->cirrus_srcptr = s->cirrus_bltbuf;
900 s->cirrus_srcptr_end = s->cirrus_bltbuf + s->cirrus_blt_srcpitch;
901 cirrus_update_memory_access(s);
902 return 1;
903 }
904
905 static int cirrus_bitblt_videotocpu(CirrusVGAState * s)
906 {
907 /* XXX */
908 #ifdef DEBUG_BITBLT
909 printf("cirrus: bitblt (video to cpu) is not implemented yet\n");
910 #endif
911 return 0;
912 }
913
914 static int cirrus_bitblt_videotovideo(CirrusVGAState * s)
915 {
916 int ret;
917
918 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
919 ret = cirrus_bitblt_videotovideo_patterncopy(s);
920 } else {
921 ret = cirrus_bitblt_videotovideo_copy(s);
922 }
923 if (ret)
924 cirrus_bitblt_reset(s);
925 return ret;
926 }
927
928 static void cirrus_bitblt_start(CirrusVGAState * s)
929 {
930 uint8_t blt_rop;
931
932 s->gr[0x31] |= CIRRUS_BLT_BUSY;
933
934 s->cirrus_blt_width = (s->gr[0x20] | (s->gr[0x21] << 8)) + 1;
935 s->cirrus_blt_height = (s->gr[0x22] | (s->gr[0x23] << 8)) + 1;
936 s->cirrus_blt_dstpitch = (s->gr[0x24] | (s->gr[0x25] << 8));
937 s->cirrus_blt_srcpitch = (s->gr[0x26] | (s->gr[0x27] << 8));
938 s->cirrus_blt_dstaddr =
939 (s->gr[0x28] | (s->gr[0x29] << 8) | (s->gr[0x2a] << 16));
940 s->cirrus_blt_srcaddr =
941 (s->gr[0x2c] | (s->gr[0x2d] << 8) | (s->gr[0x2e] << 16));
942 s->cirrus_blt_mode = s->gr[0x30];
943 s->cirrus_blt_modeext = s->gr[0x33];
944 blt_rop = s->gr[0x32];
945
946 #ifdef DEBUG_BITBLT
947 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",
948 blt_rop,
949 s->cirrus_blt_mode,
950 s->cirrus_blt_modeext,
951 s->cirrus_blt_width,
952 s->cirrus_blt_height,
953 s->cirrus_blt_dstpitch,
954 s->cirrus_blt_srcpitch,
955 s->cirrus_blt_dstaddr,
956 s->cirrus_blt_srcaddr,
957 s->gr[0x2f]);
958 #endif
959
960 switch (s->cirrus_blt_mode & CIRRUS_BLTMODE_PIXELWIDTHMASK) {
961 case CIRRUS_BLTMODE_PIXELWIDTH8:
962 s->cirrus_blt_pixelwidth = 1;
963 break;
964 case CIRRUS_BLTMODE_PIXELWIDTH16:
965 s->cirrus_blt_pixelwidth = 2;
966 break;
967 case CIRRUS_BLTMODE_PIXELWIDTH24:
968 s->cirrus_blt_pixelwidth = 3;
969 break;
970 case CIRRUS_BLTMODE_PIXELWIDTH32:
971 s->cirrus_blt_pixelwidth = 4;
972 break;
973 default:
974 #ifdef DEBUG_BITBLT
975 printf("cirrus: bitblt - pixel width is unknown\n");
976 #endif
977 goto bitblt_ignore;
978 }
979 s->cirrus_blt_mode &= ~CIRRUS_BLTMODE_PIXELWIDTHMASK;
980
981 if ((s->
982 cirrus_blt_mode & (CIRRUS_BLTMODE_MEMSYSSRC |
983 CIRRUS_BLTMODE_MEMSYSDEST))
984 == (CIRRUS_BLTMODE_MEMSYSSRC | CIRRUS_BLTMODE_MEMSYSDEST)) {
985 #ifdef DEBUG_BITBLT
986 printf("cirrus: bitblt - memory-to-memory copy is requested\n");
987 #endif
988 goto bitblt_ignore;
989 }
990
991 if ((s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_SOLIDFILL) &&
992 (s->cirrus_blt_mode & (CIRRUS_BLTMODE_MEMSYSDEST |
993 CIRRUS_BLTMODE_TRANSPARENTCOMP |
994 CIRRUS_BLTMODE_PATTERNCOPY |
995 CIRRUS_BLTMODE_COLOREXPAND)) ==
996 (CIRRUS_BLTMODE_PATTERNCOPY | CIRRUS_BLTMODE_COLOREXPAND)) {
997 cirrus_bitblt_fgcol(s);
998 cirrus_bitblt_solidfill(s, blt_rop);
999 } else {
1000 if ((s->cirrus_blt_mode & (CIRRUS_BLTMODE_COLOREXPAND |
1001 CIRRUS_BLTMODE_PATTERNCOPY)) ==
1002 CIRRUS_BLTMODE_COLOREXPAND) {
1003
1004 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_TRANSPARENTCOMP) {
1005 if (s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_COLOREXPINV)
1006 cirrus_bitblt_bgcol(s);
1007 else
1008 cirrus_bitblt_fgcol(s);
1009 s->cirrus_rop = cirrus_colorexpand_transp[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1010 } else {
1011 cirrus_bitblt_fgcol(s);
1012 cirrus_bitblt_bgcol(s);
1013 s->cirrus_rop = cirrus_colorexpand[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1014 }
1015 } else if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
1016 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_COLOREXPAND) {
1017 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_TRANSPARENTCOMP) {
1018 if (s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_COLOREXPINV)
1019 cirrus_bitblt_bgcol(s);
1020 else
1021 cirrus_bitblt_fgcol(s);
1022 s->cirrus_rop = cirrus_colorexpand_pattern_transp[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1023 } else {
1024 cirrus_bitblt_fgcol(s);
1025 cirrus_bitblt_bgcol(s);
1026 s->cirrus_rop = cirrus_colorexpand_pattern[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1027 }
1028 } else {
1029 s->cirrus_rop = cirrus_patternfill[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1030 }
1031 } else {
1032 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_TRANSPARENTCOMP) {
1033 if (s->cirrus_blt_pixelwidth > 2) {
1034 printf("src transparent without colorexpand must be 8bpp or 16bpp\n");
1035 goto bitblt_ignore;
1036 }
1037 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_BACKWARDS) {
1038 s->cirrus_blt_dstpitch = -s->cirrus_blt_dstpitch;
1039 s->cirrus_blt_srcpitch = -s->cirrus_blt_srcpitch;
1040 s->cirrus_rop = cirrus_bkwd_transp_rop[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1041 } else {
1042 s->cirrus_rop = cirrus_fwd_transp_rop[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
1043 }
1044 } else {
1045 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_BACKWARDS) {
1046 s->cirrus_blt_dstpitch = -s->cirrus_blt_dstpitch;
1047 s->cirrus_blt_srcpitch = -s->cirrus_blt_srcpitch;
1048 s->cirrus_rop = cirrus_bkwd_rop[rop_to_index[blt_rop]];
1049 } else {
1050 s->cirrus_rop = cirrus_fwd_rop[rop_to_index[blt_rop]];
1051 }
1052 }
1053 }
1054 // setup bitblt engine.
1055 if (s->cirrus_blt_mode & CIRRUS_BLTMODE_MEMSYSSRC) {
1056 if (!cirrus_bitblt_cputovideo(s))
1057 goto bitblt_ignore;
1058 } else if (s->cirrus_blt_mode & CIRRUS_BLTMODE_MEMSYSDEST) {
1059 if (!cirrus_bitblt_videotocpu(s))
1060 goto bitblt_ignore;
1061 } else {
1062 if (!cirrus_bitblt_videotovideo(s))
1063 goto bitblt_ignore;
1064 }
1065 }
1066 return;
1067 bitblt_ignore:;
1068 cirrus_bitblt_reset(s);
1069 }
1070
1071 static void cirrus_write_bitblt(CirrusVGAState * s, unsigned reg_value)
1072 {
1073 unsigned old_value;
1074
1075 old_value = s->gr[0x31];
1076 s->gr[0x31] = reg_value;
1077
1078 if (((old_value & CIRRUS_BLT_RESET) != 0) &&
1079 ((reg_value & CIRRUS_BLT_RESET) == 0)) {
1080 cirrus_bitblt_reset(s);
1081 } else if (((old_value & CIRRUS_BLT_START) == 0) &&
1082 ((reg_value & CIRRUS_BLT_START) != 0)) {
1083 cirrus_bitblt_start(s);
1084 }
1085 }
1086
1087
1088 /***************************************
1089 *
1090 * basic parameters
1091 *
1092 ***************************************/
1093
1094 static void cirrus_get_offsets(VGAState *s1,
1095 uint32_t *pline_offset,
1096 uint32_t *pstart_addr,
1097 uint32_t *pline_compare)
1098 {
1099 CirrusVGAState * s = (CirrusVGAState *)s1;
1100 uint32_t start_addr, line_offset, line_compare;
1101
1102 line_offset = s->cr[0x13]
1103 | ((s->cr[0x1b] & 0x10) << 4);
1104 line_offset <<= 3;
1105 *pline_offset = line_offset;
1106
1107 start_addr = (s->cr[0x0c] << 8)
1108 | s->cr[0x0d]
1109 | ((s->cr[0x1b] & 0x01) << 16)
1110 | ((s->cr[0x1b] & 0x0c) << 15)
1111 | ((s->cr[0x1d] & 0x80) << 12);
1112 *pstart_addr = start_addr;
1113
1114 line_compare = s->cr[0x18] |
1115 ((s->cr[0x07] & 0x10) << 4) |
1116 ((s->cr[0x09] & 0x40) << 3);
1117 *pline_compare = line_compare;
1118 }
1119
1120 static uint32_t cirrus_get_bpp16_depth(CirrusVGAState * s)
1121 {
1122 uint32_t ret = 16;
1123
1124 switch (s->cirrus_hidden_dac_data & 0xf) {
1125 case 0:
1126 ret = 15;
1127 break; /* Sierra HiColor */
1128 case 1:
1129 ret = 16;
1130 break; /* XGA HiColor */
1131 default:
1132 #ifdef DEBUG_CIRRUS
1133 printf("cirrus: invalid DAC value %x in 16bpp\n",
1134 (s->cirrus_hidden_dac_data & 0xf));
1135 #endif
1136 ret = 15; /* XXX */
1137 break;
1138 }
1139 return ret;
1140 }
1141
1142 static int cirrus_get_bpp(VGAState *s1)
1143 {
1144 CirrusVGAState * s = (CirrusVGAState *)s1;
1145 uint32_t ret = 8;
1146
1147 if ((s->sr[0x07] & 0x01) != 0) {
1148 /* Cirrus SVGA */
1149 switch (s->sr[0x07] & CIRRUS_SR7_BPP_MASK) {
1150 case CIRRUS_SR7_BPP_8:
1151 ret = 8;
1152 break;
1153 case CIRRUS_SR7_BPP_16_DOUBLEVCLK:
1154 ret = cirrus_get_bpp16_depth(s);
1155 break;
1156 case CIRRUS_SR7_BPP_24:
1157 ret = 24;
1158 break;
1159 case CIRRUS_SR7_BPP_16:
1160 ret = cirrus_get_bpp16_depth(s);
1161 break;
1162 case CIRRUS_SR7_BPP_32:
1163 ret = 32;
1164 break;
1165 default:
1166 #ifdef DEBUG_CIRRUS
1167 printf("cirrus: unknown bpp - sr7=%x\n", s->sr[0x7]);
1168 #endif
1169 ret = 8;
1170 break;
1171 }
1172 } else {
1173 /* VGA */
1174 ret = 0;
1175 }
1176
1177 return ret;
1178 }
1179
1180 static void cirrus_get_resolution(VGAState *s, int *pwidth, int *pheight)
1181 {
1182 int width, height;
1183
1184 width = (s->cr[0x01] + 1) * 8;
1185 height = s->cr[0x12] |
1186 ((s->cr[0x07] & 0x02) << 7) |
1187 ((s->cr[0x07] & 0x40) << 3);
1188 height = (height + 1);
1189 /* interlace support */
1190 if (s->cr[0x1a] & 0x01)
1191 height = height * 2;
1192 *pwidth = width;
1193 *pheight = height;
1194 }
1195
1196 /***************************************
1197 *
1198 * bank memory
1199 *
1200 ***************************************/
1201
1202 static void cirrus_update_bank_ptr(CirrusVGAState * s, unsigned bank_index)
1203 {
1204 unsigned offset;
1205 unsigned limit;
1206
1207 if ((s->gr[0x0b] & 0x01) != 0) /* dual bank */
1208 offset = s->gr[0x09 + bank_index];
1209 else /* single bank */
1210 offset = s->gr[0x09];
1211
1212 if ((s->gr[0x0b] & 0x20) != 0)
1213 offset <<= 14;
1214 else
1215 offset <<= 12;
1216
1217 if (s->real_vram_size <= offset)
1218 limit = 0;
1219 else
1220 limit = s->real_vram_size - offset;
1221
1222 if (((s->gr[0x0b] & 0x01) == 0) && (bank_index != 0)) {
1223 if (limit > 0x8000) {
1224 offset += 0x8000;
1225 limit -= 0x8000;
1226 } else {
1227 limit = 0;
1228 }
1229 }
1230
1231 if (limit > 0) {
1232 s->cirrus_bank_base[bank_index] = offset;
1233 s->cirrus_bank_limit[bank_index] = limit;
1234 } else {
1235 s->cirrus_bank_base[bank_index] = 0;
1236 s->cirrus_bank_limit[bank_index] = 0;
1237 }
1238 }
1239
1240 /***************************************
1241 *
1242 * I/O access between 0x3c4-0x3c5
1243 *
1244 ***************************************/
1245
1246 static int
1247 cirrus_hook_read_sr(CirrusVGAState * s, unsigned reg_index, int *reg_value)
1248 {
1249 switch (reg_index) {
1250 case 0x00: // Standard VGA
1251 case 0x01: // Standard VGA
1252 case 0x02: // Standard VGA
1253 case 0x03: // Standard VGA
1254 case 0x04: // Standard VGA
1255 return CIRRUS_HOOK_NOT_HANDLED;
1256 case 0x06: // Unlock Cirrus extensions
1257 *reg_value = s->sr[reg_index];
1258 break;
1259 case 0x10:
1260 case 0x30:
1261 case 0x50:
1262 case 0x70: // Graphics Cursor X
1263 case 0x90:
1264 case 0xb0:
1265 case 0xd0:
1266 case 0xf0: // Graphics Cursor X
1267 *reg_value = s->sr[0x10];
1268 break;
1269 case 0x11:
1270 case 0x31:
1271 case 0x51:
1272 case 0x71: // Graphics Cursor Y
1273 case 0x91:
1274 case 0xb1:
1275 case 0xd1:
1276 case 0xf1: // Graphics Cursor Y
1277 *reg_value = s->sr[0x11];
1278 break;
1279 case 0x05: // ???
1280 case 0x07: // Extended Sequencer Mode
1281 case 0x08: // EEPROM Control
1282 case 0x09: // Scratch Register 0
1283 case 0x0a: // Scratch Register 1
1284 case 0x0b: // VCLK 0
1285 case 0x0c: // VCLK 1
1286 case 0x0d: // VCLK 2
1287 case 0x0e: // VCLK 3
1288 case 0x0f: // DRAM Control
1289 case 0x12: // Graphics Cursor Attribute
1290 case 0x13: // Graphics Cursor Pattern Address
1291 case 0x14: // Scratch Register 2
1292 case 0x15: // Scratch Register 3
1293 case 0x16: // Performance Tuning Register
1294 case 0x17: // Configuration Readback and Extended Control
1295 case 0x18: // Signature Generator Control
1296 case 0x19: // Signal Generator Result
1297 case 0x1a: // Signal Generator Result
1298 case 0x1b: // VCLK 0 Denominator & Post
1299 case 0x1c: // VCLK 1 Denominator & Post
1300 case 0x1d: // VCLK 2 Denominator & Post
1301 case 0x1e: // VCLK 3 Denominator & Post
1302 case 0x1f: // BIOS Write Enable and MCLK select
1303 #ifdef DEBUG_CIRRUS
1304 printf("cirrus: handled inport sr_index %02x\n", reg_index);
1305 #endif
1306 *reg_value = s->sr[reg_index];
1307 break;
1308 default:
1309 #ifdef DEBUG_CIRRUS
1310 printf("cirrus: inport sr_index %02x\n", reg_index);
1311 #endif
1312 *reg_value = 0xff;
1313 break;
1314 }
1315
1316 return CIRRUS_HOOK_HANDLED;
1317 }
1318
1319 static int
1320 cirrus_hook_write_sr(CirrusVGAState * s, unsigned reg_index, int reg_value)
1321 {
1322 switch (reg_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 CIRRUS_HOOK_NOT_HANDLED;
1329 case 0x06: // Unlock Cirrus extensions
1330 reg_value &= 0x17;
1331 if (reg_value == 0x12) {
1332 s->sr[reg_index] = 0x12;
1333 } else {
1334 s->sr[reg_index] = 0x0f;
1335 }
1336 break;
1337 case 0x10:
1338 case 0x30:
1339 case 0x50:
1340 case 0x70: // Graphics Cursor X
1341 case 0x90:
1342 case 0xb0:
1343 case 0xd0:
1344 case 0xf0: // Graphics Cursor X
1345 s->sr[0x10] = reg_value;
1346 s->hw_cursor_x = (reg_value << 3) | (reg_index >> 5);
1347 break;
1348 case 0x11:
1349 case 0x31:
1350 case 0x51:
1351 case 0x71: // Graphics Cursor Y
1352 case 0x91:
1353 case 0xb1:
1354 case 0xd1:
1355 case 0xf1: // Graphics Cursor Y
1356 s->sr[0x11] = reg_value;
1357 s->hw_cursor_y = (reg_value << 3) | (reg_index >> 5);
1358 break;
1359 case 0x07: // Extended Sequencer Mode
1360 case 0x08: // EEPROM Control
1361 case 0x09: // Scratch Register 0
1362 case 0x0a: // Scratch Register 1
1363 case 0x0b: // VCLK 0
1364 case 0x0c: // VCLK 1
1365 case 0x0d: // VCLK 2
1366 case 0x0e: // VCLK 3
1367 case 0x0f: // DRAM Control
1368 case 0x12: // Graphics Cursor Attribute
1369 case 0x13: // Graphics Cursor Pattern Address
1370 case 0x14: // Scratch Register 2
1371 case 0x15: // Scratch Register 3
1372 case 0x16: // Performance Tuning Register
1373 case 0x18: // Signature Generator Control
1374 case 0x19: // Signature Generator Result
1375 case 0x1a: // Signature Generator Result
1376 case 0x1b: // VCLK 0 Denominator & Post
1377 case 0x1c: // VCLK 1 Denominator & Post
1378 case 0x1d: // VCLK 2 Denominator & Post
1379 case 0x1e: // VCLK 3 Denominator & Post
1380 case 0x1f: // BIOS Write Enable and MCLK select
1381 s->sr[reg_index] = reg_value;
1382 #ifdef DEBUG_CIRRUS
1383 printf("cirrus: handled outport sr_index %02x, sr_value %02x\n",
1384 reg_index, reg_value);
1385 #endif
1386 break;
1387 case 0x17: // Configuration Readback and Extended Control
1388 s->sr[reg_index] = (s->sr[reg_index] & 0x38) | (reg_value & 0xc7);
1389 cirrus_update_memory_access(s);
1390 break;
1391 default:
1392 #ifdef DEBUG_CIRRUS
1393 printf("cirrus: outport sr_index %02x, sr_value %02x\n", reg_index,
1394 reg_value);
1395 #endif
1396 break;
1397 }
1398
1399 return CIRRUS_HOOK_HANDLED;
1400 }
1401
1402 /***************************************
1403 *
1404 * I/O access at 0x3c6
1405 *
1406 ***************************************/
1407
1408 static void cirrus_read_hidden_dac(CirrusVGAState * s, int *reg_value)
1409 {
1410 *reg_value = 0xff;
1411 if (++s->cirrus_hidden_dac_lockindex == 5) {
1412 *reg_value = s->cirrus_hidden_dac_data;
1413 s->cirrus_hidden_dac_lockindex = 0;
1414 }
1415 }
1416
1417 static void cirrus_write_hidden_dac(CirrusVGAState * s, int reg_value)
1418 {
1419 if (s->cirrus_hidden_dac_lockindex == 4) {
1420 s->cirrus_hidden_dac_data = reg_value;
1421 #if defined(DEBUG_CIRRUS)
1422 printf("cirrus: outport hidden DAC, value %02x\n", reg_value);
1423 #endif
1424 }
1425 s->cirrus_hidden_dac_lockindex = 0;
1426 }
1427
1428 /***************************************
1429 *
1430 * I/O access at 0x3c9
1431 *
1432 ***************************************/
1433
1434 static int cirrus_hook_read_palette(CirrusVGAState * s, int *reg_value)
1435 {
1436 if (!(s->sr[0x12] & CIRRUS_CURSOR_HIDDENPEL))
1437 return CIRRUS_HOOK_NOT_HANDLED;
1438 *reg_value =
1439 s->cirrus_hidden_palette[(s->dac_read_index & 0x0f) * 3 +
1440 s->dac_sub_index];
1441 if (++s->dac_sub_index == 3) {
1442 s->dac_sub_index = 0;
1443 s->dac_read_index++;
1444 }
1445 return CIRRUS_HOOK_HANDLED;
1446 }
1447
1448 static int cirrus_hook_write_palette(CirrusVGAState * s, int reg_value)
1449 {
1450 if (!(s->sr[0x12] & CIRRUS_CURSOR_HIDDENPEL))
1451 return CIRRUS_HOOK_NOT_HANDLED;
1452 s->dac_cache[s->dac_sub_index] = reg_value;
1453 if (++s->dac_sub_index == 3) {
1454 memcpy(&s->cirrus_hidden_palette[(s->dac_write_index & 0x0f) * 3],
1455 s->dac_cache, 3);
1456 /* XXX update cursor */
1457 s->dac_sub_index = 0;
1458 s->dac_write_index++;
1459 }
1460 return CIRRUS_HOOK_HANDLED;
1461 }
1462
1463 /***************************************
1464 *
1465 * I/O access between 0x3ce-0x3cf
1466 *
1467 ***************************************/
1468
1469 static int
1470 cirrus_hook_read_gr(CirrusVGAState * s, unsigned reg_index, int *reg_value)
1471 {
1472 switch (reg_index) {
1473 case 0x00: // Standard VGA, BGCOLOR 0x000000ff
1474 *reg_value = s->cirrus_shadow_gr0;
1475 return CIRRUS_HOOK_HANDLED;
1476 case 0x01: // Standard VGA, FGCOLOR 0x000000ff
1477 *reg_value = s->cirrus_shadow_gr1;
1478 return CIRRUS_HOOK_HANDLED;
1479 case 0x02: // Standard VGA
1480 case 0x03: // Standard VGA
1481 case 0x04: // Standard VGA
1482 case 0x06: // Standard VGA
1483 case 0x07: // Standard VGA
1484 case 0x08: // Standard VGA
1485 return CIRRUS_HOOK_NOT_HANDLED;
1486 case 0x05: // Standard VGA, Cirrus extended mode
1487 default:
1488 break;
1489 }
1490
1491 if (reg_index < 0x3a) {
1492 *reg_value = s->gr[reg_index];
1493 } else {
1494 #ifdef DEBUG_CIRRUS
1495 printf("cirrus: inport gr_index %02x\n", reg_index);
1496 #endif
1497 *reg_value = 0xff;
1498 }
1499
1500 return CIRRUS_HOOK_HANDLED;
1501 }
1502
1503 static int
1504 cirrus_hook_write_gr(CirrusVGAState * s, unsigned reg_index, int reg_value)
1505 {
1506 #if defined(DEBUG_BITBLT) && 0
1507 printf("gr%02x: %02x\n", reg_index, reg_value);
1508 #endif
1509 switch (reg_index) {
1510 case 0x00: // Standard VGA, BGCOLOR 0x000000ff
1511 s->cirrus_shadow_gr0 = reg_value;
1512 return CIRRUS_HOOK_NOT_HANDLED;
1513 case 0x01: // Standard VGA, FGCOLOR 0x000000ff
1514 s->cirrus_shadow_gr1 = reg_value;
1515 return CIRRUS_HOOK_NOT_HANDLED;
1516 case 0x02: // Standard VGA
1517 case 0x03: // Standard VGA
1518 case 0x04: // Standard VGA
1519 case 0x06: // Standard VGA
1520 case 0x07: // Standard VGA
1521 case 0x08: // Standard VGA
1522 return CIRRUS_HOOK_NOT_HANDLED;
1523 case 0x05: // Standard VGA, Cirrus extended mode
1524 s->gr[reg_index] = reg_value & 0x7f;
1525 cirrus_update_memory_access(s);
1526 break;
1527 case 0x09: // bank offset #0
1528 case 0x0A: // bank offset #1
1529 s->gr[reg_index] = reg_value;
1530 cirrus_update_bank_ptr(s, 0);
1531 cirrus_update_bank_ptr(s, 1);
1532 break;
1533 case 0x0B:
1534 s->gr[reg_index] = reg_value;
1535 cirrus_update_bank_ptr(s, 0);
1536 cirrus_update_bank_ptr(s, 1);
1537 cirrus_update_memory_access(s);
1538 break;
1539 case 0x10: // BGCOLOR 0x0000ff00
1540 case 0x11: // FGCOLOR 0x0000ff00
1541 case 0x12: // BGCOLOR 0x00ff0000
1542 case 0x13: // FGCOLOR 0x00ff0000
1543 case 0x14: // BGCOLOR 0xff000000
1544 case 0x15: // FGCOLOR 0xff000000
1545 case 0x20: // BLT WIDTH 0x0000ff
1546 case 0x22: // BLT HEIGHT 0x0000ff
1547 case 0x24: // BLT DEST PITCH 0x0000ff
1548 case 0x26: // BLT SRC PITCH 0x0000ff
1549 case 0x28: // BLT DEST ADDR 0x0000ff
1550 case 0x29: // BLT DEST ADDR 0x00ff00
1551 case 0x2c: // BLT SRC ADDR 0x0000ff
1552 case 0x2d: // BLT SRC ADDR 0x00ff00
1553 case 0x2f: // BLT WRITEMASK
1554 case 0x30: // BLT MODE
1555 case 0x32: // RASTER OP
1556 case 0x33: // BLT MODEEXT
1557 case 0x34: // BLT TRANSPARENT COLOR 0x00ff
1558 case 0x35: // BLT TRANSPARENT COLOR 0xff00
1559 case 0x38: // BLT TRANSPARENT COLOR MASK 0x00ff
1560 case 0x39: // BLT TRANSPARENT COLOR MASK 0xff00
1561 s->gr[reg_index] = reg_value;
1562 break;
1563 case 0x21: // BLT WIDTH 0x001f00
1564 case 0x23: // BLT HEIGHT 0x001f00
1565 case 0x25: // BLT DEST PITCH 0x001f00
1566 case 0x27: // BLT SRC PITCH 0x001f00
1567 s->gr[reg_index] = reg_value & 0x1f;
1568 break;
1569 case 0x2a: // BLT DEST ADDR 0x3f0000
1570 s->gr[reg_index] = reg_value & 0x3f;
1571 /* if auto start mode, starts bit blt now */
1572 if (s->gr[0x31] & CIRRUS_BLT_AUTOSTART) {
1573 cirrus_bitblt_start(s);
1574 }
1575 break;
1576 case 0x2e: // BLT SRC ADDR 0x3f0000
1577 s->gr[reg_index] = reg_value & 0x3f;
1578 break;
1579 case 0x31: // BLT STATUS/START
1580 cirrus_write_bitblt(s, reg_value);
1581 break;
1582 default:
1583 #ifdef DEBUG_CIRRUS
1584 printf("cirrus: outport gr_index %02x, gr_value %02x\n", reg_index,
1585 reg_value);
1586 #endif
1587 break;
1588 }
1589
1590 return CIRRUS_HOOK_HANDLED;
1591 }
1592
1593 /***************************************
1594 *
1595 * I/O access between 0x3d4-0x3d5
1596 *
1597 ***************************************/
1598
1599 static int
1600 cirrus_hook_read_cr(CirrusVGAState * s, unsigned reg_index, int *reg_value)
1601 {
1602 switch (reg_index) {
1603 case 0x00: // Standard VGA
1604 case 0x01: // Standard VGA
1605 case 0x02: // Standard VGA
1606 case 0x03: // Standard VGA
1607 case 0x04: // Standard VGA
1608 case 0x05: // Standard VGA
1609 case 0x06: // Standard VGA
1610 case 0x07: // Standard VGA
1611 case 0x08: // Standard VGA
1612 case 0x09: // Standard VGA
1613 case 0x0a: // Standard VGA
1614 case 0x0b: // Standard VGA
1615 case 0x0c: // Standard VGA
1616 case 0x0d: // Standard VGA
1617 case 0x0e: // Standard VGA
1618 case 0x0f: // Standard VGA
1619 case 0x10: // Standard VGA
1620 case 0x11: // Standard VGA
1621 case 0x12: // Standard VGA
1622 case 0x13: // Standard VGA
1623 case 0x14: // Standard VGA
1624 case 0x15: // Standard VGA
1625 case 0x16: // Standard VGA
1626 case 0x17: // Standard VGA
1627 case 0x18: // Standard VGA
1628 return CIRRUS_HOOK_NOT_HANDLED;
1629 case 0x24: // Attribute Controller Toggle Readback (R)
1630 *reg_value = (s->ar_flip_flop << 7);
1631 break;
1632 case 0x19: // Interlace End
1633 case 0x1a: // Miscellaneous Control
1634 case 0x1b: // Extended Display Control
1635 case 0x1c: // Sync Adjust and Genlock
1636 case 0x1d: // Overlay Extended Control
1637 case 0x22: // Graphics Data Latches Readback (R)
1638 case 0x25: // Part Status
1639 case 0x27: // Part ID (R)
1640 *reg_value = s->cr[reg_index];
1641 break;
1642 case 0x26: // Attribute Controller Index Readback (R)
1643 *reg_value = s->ar_index & 0x3f;
1644 break;
1645 default:
1646 #ifdef DEBUG_CIRRUS
1647 printf("cirrus: inport cr_index %02x\n", reg_index);
1648 *reg_value = 0xff;
1649 #endif
1650 break;
1651 }
1652
1653 return CIRRUS_HOOK_HANDLED;
1654 }
1655
1656 static int
1657 cirrus_hook_write_cr(CirrusVGAState * s, unsigned reg_index, int reg_value)
1658 {
1659 switch (reg_index) {
1660 case 0x00: // Standard VGA
1661 case 0x01: // Standard VGA
1662 case 0x02: // Standard VGA
1663 case 0x03: // Standard VGA
1664 case 0x04: // Standard VGA
1665 case 0x05: // Standard VGA
1666 case 0x06: // Standard VGA
1667 case 0x07: // Standard VGA
1668 case 0x08: // Standard VGA
1669 case 0x09: // Standard VGA
1670 case 0x0a: // Standard VGA
1671 case 0x0b: // Standard VGA
1672 case 0x0c: // Standard VGA
1673 case 0x0d: // Standard VGA
1674 case 0x0e: // Standard VGA
1675 case 0x0f: // Standard VGA
1676 case 0x10: // Standard VGA
1677 case 0x11: // Standard VGA
1678 case 0x12: // Standard VGA
1679 case 0x13: // Standard VGA
1680 case 0x14: // Standard VGA
1681 case 0x15: // Standard VGA
1682 case 0x16: // Standard VGA
1683 case 0x17: // Standard VGA
1684 case 0x18: // Standard VGA
1685 return CIRRUS_HOOK_NOT_HANDLED;
1686 case 0x19: // Interlace End
1687 case 0x1a: // Miscellaneous Control
1688 case 0x1b: // Extended Display Control
1689 case 0x1c: // Sync Adjust and Genlock
1690 case 0x1d: // Overlay Extended Control
1691 s->cr[reg_index] = reg_value;
1692 #ifdef DEBUG_CIRRUS
1693 printf("cirrus: handled outport cr_index %02x, cr_value %02x\n",
1694 reg_index, reg_value);
1695 #endif
1696 break;
1697 case 0x22: // Graphics Data Latches Readback (R)
1698 case 0x24: // Attribute Controller Toggle Readback (R)
1699 case 0x26: // Attribute Controller Index Readback (R)
1700 case 0x27: // Part ID (R)
1701 break;
1702 case 0x25: // Part Status
1703 default:
1704 #ifdef DEBUG_CIRRUS
1705 printf("cirrus: outport cr_index %02x, cr_value %02x\n", reg_index,
1706 reg_value);
1707 #endif
1708 break;
1709 }
1710
1711 return CIRRUS_HOOK_HANDLED;
1712 }
1713
1714 /***************************************
1715 *
1716 * memory-mapped I/O (bitblt)
1717 *
1718 ***************************************/
1719
1720 static uint8_t cirrus_mmio_blt_read(CirrusVGAState * s, unsigned address)
1721 {
1722 int value = 0xff;
1723
1724 switch (address) {
1725 case (CIRRUS_MMIO_BLTBGCOLOR + 0):
1726 cirrus_hook_read_gr(s, 0x00, &value);
1727 break;
1728 case (CIRRUS_MMIO_BLTBGCOLOR + 1):
1729 cirrus_hook_read_gr(s, 0x10, &value);
1730 break;
1731 case (CIRRUS_MMIO_BLTBGCOLOR + 2):
1732 cirrus_hook_read_gr(s, 0x12, &value);
1733 break;
1734 case (CIRRUS_MMIO_BLTBGCOLOR + 3):
1735 cirrus_hook_read_gr(s, 0x14, &value);
1736 break;
1737 case (CIRRUS_MMIO_BLTFGCOLOR + 0):
1738 cirrus_hook_read_gr(s, 0x01, &value);
1739 break;
1740 case (CIRRUS_MMIO_BLTFGCOLOR + 1):
1741 cirrus_hook_read_gr(s, 0x11, &value);
1742 break;
1743 case (CIRRUS_MMIO_BLTFGCOLOR + 2):
1744 cirrus_hook_read_gr(s, 0x13, &value);
1745 break;
1746 case (CIRRUS_MMIO_BLTFGCOLOR + 3):
1747 cirrus_hook_read_gr(s, 0x15, &value);
1748 break;
1749 case (CIRRUS_MMIO_BLTWIDTH + 0):
1750 cirrus_hook_read_gr(s, 0x20, &value);
1751 break;
1752 case (CIRRUS_MMIO_BLTWIDTH + 1):
1753 cirrus_hook_read_gr(s, 0x21, &value);
1754 break;
1755 case (CIRRUS_MMIO_BLTHEIGHT + 0):
1756 cirrus_hook_read_gr(s, 0x22, &value);
1757 break;
1758 case (CIRRUS_MMIO_BLTHEIGHT + 1):
1759 cirrus_hook_read_gr(s, 0x23, &value);
1760 break;
1761 case (CIRRUS_MMIO_BLTDESTPITCH + 0):
1762 cirrus_hook_read_gr(s, 0x24, &value);
1763 break;
1764 case (CIRRUS_MMIO_BLTDESTPITCH + 1):
1765 cirrus_hook_read_gr(s, 0x25, &value);
1766 break;
1767 case (CIRRUS_MMIO_BLTSRCPITCH + 0):
1768 cirrus_hook_read_gr(s, 0x26, &value);
1769 break;
1770 case (CIRRUS_MMIO_BLTSRCPITCH + 1):
1771 cirrus_hook_read_gr(s, 0x27, &value);
1772 break;
1773 case (CIRRUS_MMIO_BLTDESTADDR + 0):
1774 cirrus_hook_read_gr(s, 0x28, &value);
1775 break;
1776 case (CIRRUS_MMIO_BLTDESTADDR + 1):
1777 cirrus_hook_read_gr(s, 0x29, &value);
1778 break;
1779 case (CIRRUS_MMIO_BLTDESTADDR + 2):
1780 cirrus_hook_read_gr(s, 0x2a, &value);
1781 break;
1782 case (CIRRUS_MMIO_BLTSRCADDR + 0):
1783 cirrus_hook_read_gr(s, 0x2c, &value);
1784 break;
1785 case (CIRRUS_MMIO_BLTSRCADDR + 1):
1786 cirrus_hook_read_gr(s, 0x2d, &value);
1787 break;
1788 case (CIRRUS_MMIO_BLTSRCADDR + 2):
1789 cirrus_hook_read_gr(s, 0x2e, &value);
1790 break;
1791 case CIRRUS_MMIO_BLTWRITEMASK:
1792 cirrus_hook_read_gr(s, 0x2f, &value);
1793 break;
1794 case CIRRUS_MMIO_BLTMODE:
1795 cirrus_hook_read_gr(s, 0x30, &value);
1796 break;
1797 case CIRRUS_MMIO_BLTROP:
1798 cirrus_hook_read_gr(s, 0x32, &value);
1799 break;
1800 case CIRRUS_MMIO_BLTMODEEXT:
1801 cirrus_hook_read_gr(s, 0x33, &value);
1802 break;
1803 case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 0):
1804 cirrus_hook_read_gr(s, 0x34, &value);
1805 break;
1806 case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 1):
1807 cirrus_hook_read_gr(s, 0x35, &value);
1808 break;
1809 case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 0):
1810 cirrus_hook_read_gr(s, 0x38, &value);
1811 break;
1812 case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 1):
1813 cirrus_hook_read_gr(s, 0x39, &value);
1814 break;
1815 case CIRRUS_MMIO_BLTSTATUS:
1816 cirrus_hook_read_gr(s, 0x31, &value);
1817 break;
1818 default:
1819 #ifdef DEBUG_CIRRUS
1820 printf("cirrus: mmio read - address 0x%04x\n", address);
1821 #endif
1822 break;
1823 }
1824
1825 return (uint8_t) value;
1826 }
1827
1828 static void cirrus_mmio_blt_write(CirrusVGAState * s, unsigned address,
1829 uint8_t value)
1830 {
1831 switch (address) {
1832 case (CIRRUS_MMIO_BLTBGCOLOR + 0):
1833 cirrus_hook_write_gr(s, 0x00, value);
1834 break;
1835 case (CIRRUS_MMIO_BLTBGCOLOR + 1):
1836 cirrus_hook_write_gr(s, 0x10, value);
1837 break;
1838 case (CIRRUS_MMIO_BLTBGCOLOR + 2):
1839 cirrus_hook_write_gr(s, 0x12, value);
1840 break;
1841 case (CIRRUS_MMIO_BLTBGCOLOR + 3):
1842 cirrus_hook_write_gr(s, 0x14, value);
1843 break;
1844 case (CIRRUS_MMIO_BLTFGCOLOR + 0):
1845 cirrus_hook_write_gr(s, 0x01, value);
1846 break;
1847 case (CIRRUS_MMIO_BLTFGCOLOR + 1):
1848 cirrus_hook_write_gr(s, 0x11, value);
1849 break;
1850 case (CIRRUS_MMIO_BLTFGCOLOR + 2):
1851 cirrus_hook_write_gr(s, 0x13, value);
1852 break;
1853 case (CIRRUS_MMIO_BLTFGCOLOR + 3):
1854 cirrus_hook_write_gr(s, 0x15, value);
1855 break;
1856 case (CIRRUS_MMIO_BLTWIDTH + 0):
1857 cirrus_hook_write_gr(s, 0x20, value);
1858 break;
1859 case (CIRRUS_MMIO_BLTWIDTH + 1):
1860 cirrus_hook_write_gr(s, 0x21, value);
1861 break;
1862 case (CIRRUS_MMIO_BLTHEIGHT + 0):
1863 cirrus_hook_write_gr(s, 0x22, value);
1864 break;
1865 case (CIRRUS_MMIO_BLTHEIGHT + 1):
1866 cirrus_hook_write_gr(s, 0x23, value);
1867 break;
1868 case (CIRRUS_MMIO_BLTDESTPITCH + 0):
1869 cirrus_hook_write_gr(s, 0x24, value);
1870 break;
1871 case (CIRRUS_MMIO_BLTDESTPITCH + 1):
1872 cirrus_hook_write_gr(s, 0x25, value);
1873 break;
1874 case (CIRRUS_MMIO_BLTSRCPITCH + 0):
1875 cirrus_hook_write_gr(s, 0x26, value);
1876 break;
1877 case (CIRRUS_MMIO_BLTSRCPITCH + 1):
1878 cirrus_hook_write_gr(s, 0x27, value);
1879 break;
1880 case (CIRRUS_MMIO_BLTDESTADDR + 0):
1881 cirrus_hook_write_gr(s, 0x28, value);
1882 break;
1883 case (CIRRUS_MMIO_BLTDESTADDR + 1):
1884 cirrus_hook_write_gr(s, 0x29, value);
1885 break;
1886 case (CIRRUS_MMIO_BLTDESTADDR + 2):
1887 cirrus_hook_write_gr(s, 0x2a, value);
1888 break;
1889 case (CIRRUS_MMIO_BLTDESTADDR + 3):
1890 /* ignored */
1891 break;
1892 case (CIRRUS_MMIO_BLTSRCADDR + 0):
1893 cirrus_hook_write_gr(s, 0x2c, value);
1894 break;
1895 case (CIRRUS_MMIO_BLTSRCADDR + 1):
1896 cirrus_hook_write_gr(s, 0x2d, value);
1897 break;
1898 case (CIRRUS_MMIO_BLTSRCADDR + 2):
1899 cirrus_hook_write_gr(s, 0x2e, value);
1900 break;
1901 case CIRRUS_MMIO_BLTWRITEMASK:
1902 cirrus_hook_write_gr(s, 0x2f, value);
1903 break;
1904 case CIRRUS_MMIO_BLTMODE:
1905 cirrus_hook_write_gr(s, 0x30, value);
1906 break;
1907 case CIRRUS_MMIO_BLTROP:
1908 cirrus_hook_write_gr(s, 0x32, value);
1909 break;
1910 case CIRRUS_MMIO_BLTMODEEXT:
1911 cirrus_hook_write_gr(s, 0x33, value);
1912 break;
1913 case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 0):
1914 cirrus_hook_write_gr(s, 0x34, value);
1915 break;
1916 case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 1):
1917 cirrus_hook_write_gr(s, 0x35, value);
1918 break;
1919 case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 0):
1920 cirrus_hook_write_gr(s, 0x38, value);
1921 break;
1922 case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 1):
1923 cirrus_hook_write_gr(s, 0x39, value);
1924 break;
1925 case CIRRUS_MMIO_BLTSTATUS:
1926 cirrus_hook_write_gr(s, 0x31, value);
1927 break;
1928 default:
1929 #ifdef DEBUG_CIRRUS
1930 printf("cirrus: mmio write - addr 0x%04x val 0x%02x (ignored)\n",
1931 address, value);
1932 #endif
1933 break;
1934 }
1935 }
1936
1937 /***************************************
1938 *
1939 * write mode 4/5
1940 *
1941 * assume TARGET_PAGE_SIZE >= 16
1942 *
1943 ***************************************/
1944
1945 static void cirrus_mem_writeb_mode4and5_8bpp(CirrusVGAState * s,
1946 unsigned mode,
1947 unsigned offset,
1948 uint32_t mem_value)
1949 {
1950 int x;
1951 unsigned val = mem_value;
1952 uint8_t *dst;
1953
1954 dst = s->vram_ptr + (offset &= s->cirrus_addr_mask);
1955 for (x = 0; x < 8; x++) {
1956 if (val & 0x80) {
1957 *dst = s->cirrus_shadow_gr1;
1958 } else if (mode == 5) {
1959 *dst = s->cirrus_shadow_gr0;
1960 }
1961 val <<= 1;
1962 dst++;
1963 }
1964 cpu_physical_memory_set_dirty(s->vram_offset + offset);
1965 cpu_physical_memory_set_dirty(s->vram_offset + offset + 7);
1966 }
1967
1968 static void cirrus_mem_writeb_mode4and5_16bpp(CirrusVGAState * s,
1969 unsigned mode,
1970 unsigned offset,
1971 uint32_t mem_value)
1972 {
1973 int x;
1974 unsigned val = mem_value;
1975 uint8_t *dst;
1976
1977 dst = s->vram_ptr + (offset &= s->cirrus_addr_mask);
1978 for (x = 0; x < 8; x++) {
1979 if (val & 0x80) {
1980 *dst = s->cirrus_shadow_gr1;
1981 *(dst + 1) = s->gr[0x11];
1982 } else if (mode == 5) {
1983 *dst = s->cirrus_shadow_gr0;
1984 *(dst + 1) = s->gr[0x10];
1985 }
1986 val <<= 1;
1987 dst += 2;
1988 }
1989 cpu_physical_memory_set_dirty(s->vram_offset + offset);
1990 cpu_physical_memory_set_dirty(s->vram_offset + offset + 15);
1991 }
1992
1993 /***************************************
1994 *
1995 * memory access between 0xa0000-0xbffff
1996 *
1997 ***************************************/
1998
1999 static uint32_t cirrus_vga_mem_readb(void *opaque, target_phys_addr_t addr)
2000 {
2001 CirrusVGAState *s = opaque;
2002 unsigned bank_index;
2003 unsigned bank_offset;
2004 uint32_t val;
2005
2006 if ((s->sr[0x07] & 0x01) == 0) {
2007 return vga_mem_readb(s, addr);
2008 }
2009
2010 addr &= 0x1ffff;
2011
2012 if (addr < 0x10000) {
2013 /* XXX handle bitblt */
2014 /* video memory */
2015 bank_index = addr >> 15;
2016 bank_offset = addr & 0x7fff;
2017 if (bank_offset < s->cirrus_bank_limit[bank_index]) {
2018 bank_offset += s->cirrus_bank_base[bank_index];
2019 if ((s->gr[0x0B] & 0x14) == 0x14) {
2020 bank_offset <<= 4;
2021 } else if (s->gr[0x0B] & 0x02) {
2022 bank_offset <<= 3;
2023 }
2024 bank_offset &= s->cirrus_addr_mask;
2025 val = *(s->vram_ptr + bank_offset);
2026 } else
2027 val = 0xff;
2028 } else if (addr >= 0x18000 && addr < 0x18100) {
2029 /* memory-mapped I/O */
2030 val = 0xff;
2031 if ((s->sr[0x17] & 0x44) == 0x04) {
2032 val = cirrus_mmio_blt_read(s, addr & 0xff);
2033 }
2034 } else {
2035 val = 0xff;
2036 #ifdef DEBUG_CIRRUS
2037 printf("cirrus: mem_readb %06x\n", addr);
2038 #endif
2039 }
2040 return val;
2041 }
2042
2043 static uint32_t cirrus_vga_mem_readw(void *opaque, target_phys_addr_t addr)
2044 {
2045 uint32_t v;
2046 #ifdef TARGET_WORDS_BIGENDIAN
2047 v = cirrus_vga_mem_readb(opaque, addr) << 8;
2048 v |= cirrus_vga_mem_readb(opaque, addr + 1);
2049 #else
2050 v = cirrus_vga_mem_readb(opaque, addr);
2051 v |= cirrus_vga_mem_readb(opaque, addr + 1) << 8;
2052 #endif
2053 return v;
2054 }
2055
2056 static uint32_t cirrus_vga_mem_readl(void *opaque, target_phys_addr_t addr)
2057 {
2058 uint32_t v;
2059 #ifdef TARGET_WORDS_BIGENDIAN
2060 v = cirrus_vga_mem_readb(opaque, addr) << 24;
2061 v |= cirrus_vga_mem_readb(opaque, addr + 1) << 16;
2062 v |= cirrus_vga_mem_readb(opaque, addr + 2) << 8;
2063 v |= cirrus_vga_mem_readb(opaque, addr + 3);
2064 #else
2065 v = cirrus_vga_mem_readb(opaque, addr);
2066 v |= cirrus_vga_mem_readb(opaque, addr + 1) << 8;
2067 v |= cirrus_vga_mem_readb(opaque, addr + 2) << 16;
2068 v |= cirrus_vga_mem_readb(opaque, addr + 3) << 24;
2069 #endif
2070 return v;
2071 }
2072
2073 static void cirrus_vga_mem_writeb(void *opaque, target_phys_addr_t addr,
2074 uint32_t mem_value)
2075 {
2076 CirrusVGAState *s = opaque;
2077 unsigned bank_index;
2078 unsigned bank_offset;
2079 unsigned mode;
2080
2081 if ((s->sr[0x07] & 0x01) == 0) {
2082 vga_mem_writeb(s, addr, mem_value);
2083 return;
2084 }
2085
2086 addr &= 0x1ffff;
2087
2088 if (addr < 0x10000) {
2089 if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
2090 /* bitblt */
2091 *s->cirrus_srcptr++ = (uint8_t) mem_value;
2092 if (s->cirrus_srcptr >= s->cirrus_srcptr_end) {
2093 cirrus_bitblt_cputovideo_next(s);
2094 }
2095 } else {
2096 /* video memory */
2097 bank_index = addr >> 15;
2098 bank_offset = addr & 0x7fff;
2099 if (bank_offset < s->cirrus_bank_limit[bank_index]) {
2100 bank_offset += s->cirrus_bank_base[bank_index];
2101 if ((s->gr[0x0B] & 0x14) == 0x14) {
2102 bank_offset <<= 4;
2103 } else if (s->gr[0x0B] & 0x02) {
2104 bank_offset <<= 3;
2105 }
2106 bank_offset &= s->cirrus_addr_mask;
2107 mode = s->gr[0x05] & 0x7;
2108 if (mode < 4 || mode > 5 || ((s->gr[0x0B] & 0x4) == 0)) {
2109 *(s->vram_ptr + bank_offset) = mem_value;
2110 cpu_physical_memory_set_dirty(s->vram_offset +
2111 bank_offset);
2112 } else {
2113 if ((s->gr[0x0B] & 0x14) != 0x14) {
2114 cirrus_mem_writeb_mode4and5_8bpp(s, mode,
2115 bank_offset,
2116 mem_value);
2117 } else {
2118 cirrus_mem_writeb_mode4and5_16bpp(s, mode,
2119 bank_offset,
2120 mem_value);
2121 }
2122 }
2123 }
2124 }
2125 } else if (addr >= 0x18000 && addr < 0x18100) {
2126 /* memory-mapped I/O */
2127 if ((s->sr[0x17] & 0x44) == 0x04) {
2128 cirrus_mmio_blt_write(s, addr & 0xff, mem_value);
2129 }
2130 } else {
2131 #ifdef DEBUG_CIRRUS
2132 printf("cirrus: mem_writeb %06x value %02x\n", addr, mem_value);
2133 #endif
2134 }
2135 }
2136
2137 static void cirrus_vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
2138 {
2139 #ifdef TARGET_WORDS_BIGENDIAN
2140 cirrus_vga_mem_writeb(opaque, addr, (val >> 8) & 0xff);
2141 cirrus_vga_mem_writeb(opaque, addr + 1, val & 0xff);
2142 #else
2143 cirrus_vga_mem_writeb(opaque, addr, val & 0xff);
2144 cirrus_vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2145 #endif
2146 }
2147
2148 static void cirrus_vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
2149 {
2150 #ifdef TARGET_WORDS_BIGENDIAN
2151 cirrus_vga_mem_writeb(opaque, addr, (val >> 24) & 0xff);
2152 cirrus_vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff);
2153 cirrus_vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff);
2154 cirrus_vga_mem_writeb(opaque, addr + 3, val & 0xff);
2155 #else
2156 cirrus_vga_mem_writeb(opaque, addr, val & 0xff);
2157 cirrus_vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2158 cirrus_vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2159 cirrus_vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff);
2160 #endif
2161 }
2162
2163 static CPUReadMemoryFunc *cirrus_vga_mem_read[3] = {
2164 cirrus_vga_mem_readb,
2165 cirrus_vga_mem_readw,
2166 cirrus_vga_mem_readl,
2167 };
2168
2169 static CPUWriteMemoryFunc *cirrus_vga_mem_write[3] = {
2170 cirrus_vga_mem_writeb,
2171 cirrus_vga_mem_writew,
2172 cirrus_vga_mem_writel,
2173 };
2174
2175 /***************************************
2176 *
2177 * hardware cursor
2178 *
2179 ***************************************/
2180
2181 static inline void invalidate_cursor1(CirrusVGAState *s)
2182 {
2183 if (s->last_hw_cursor_size) {
2184 vga_invalidate_scanlines((VGAState *)s,
2185 s->last_hw_cursor_y + s->last_hw_cursor_y_start,
2186 s->last_hw_cursor_y + s->last_hw_cursor_y_end);
2187 }
2188 }
2189
2190 static inline void cirrus_cursor_compute_yrange(CirrusVGAState *s)
2191 {
2192 const uint8_t *src;
2193 uint32_t content;
2194 int y, y_min, y_max;
2195
2196 src = s->vram_ptr + s->real_vram_size - 16 * 1024;
2197 if (s->sr[0x12] & CIRRUS_CURSOR_LARGE) {
2198 src += (s->sr[0x13] & 0x3c) * 256;
2199 y_min = 64;
2200 y_max = -1;
2201 for(y = 0; y < 64; y++) {
2202 content = ((uint32_t *)src)[0] |
2203 ((uint32_t *)src)[1] |
2204 ((uint32_t *)src)[2] |
2205 ((uint32_t *)src)[3];
2206 if (content) {
2207 if (y < y_min)
2208 y_min = y;
2209 if (y > y_max)
2210 y_max = y;
2211 }
2212 src += 16;
2213 }
2214 } else {
2215 src += (s->sr[0x13] & 0x3f) * 256;
2216 y_min = 32;
2217 y_max = -1;
2218 for(y = 0; y < 32; y++) {
2219 content = ((uint32_t *)src)[0] |
2220 ((uint32_t *)(src + 128))[0];
2221 if (content) {
2222 if (y < y_min)
2223 y_min = y;
2224 if (y > y_max)
2225 y_max = y;
2226 }
2227 src += 4;
2228 }
2229 }
2230 if (y_min > y_max) {
2231 s->last_hw_cursor_y_start = 0;
2232 s->last_hw_cursor_y_end = 0;
2233 } else {
2234 s->last_hw_cursor_y_start = y_min;
2235 s->last_hw_cursor_y_end = y_max + 1;
2236 }
2237 }
2238
2239 /* NOTE: we do not currently handle the cursor bitmap change, so we
2240 update the cursor only if it moves. */
2241 static void cirrus_cursor_invalidate(VGAState *s1)
2242 {
2243 CirrusVGAState *s = (CirrusVGAState *)s1;
2244 int size;
2245
2246 if (!s->sr[0x12] & CIRRUS_CURSOR_SHOW) {
2247 size = 0;
2248 } else {
2249 if (s->sr[0x12] & CIRRUS_CURSOR_LARGE)
2250 size = 64;
2251 else
2252 size = 32;
2253 }
2254 /* invalidate last cursor and new cursor if any change */
2255 if (s->last_hw_cursor_size != size ||
2256 s->last_hw_cursor_x != s->hw_cursor_x ||
2257 s->last_hw_cursor_y != s->hw_cursor_y) {
2258
2259 invalidate_cursor1(s);
2260
2261 s->last_hw_cursor_size = size;
2262 s->last_hw_cursor_x = s->hw_cursor_x;
2263 s->last_hw_cursor_y = s->hw_cursor_y;
2264 /* compute the real cursor min and max y */
2265 cirrus_cursor_compute_yrange(s);
2266 invalidate_cursor1(s);
2267 }
2268 }
2269
2270 static void cirrus_cursor_draw_line(VGAState *s1, uint8_t *d1, int scr_y)
2271 {
2272 CirrusVGAState *s = (CirrusVGAState *)s1;
2273 int w, h, bpp, x1, x2, poffset;
2274 unsigned int color0, color1;
2275 const uint8_t *palette, *src;
2276 uint32_t content;
2277
2278 if (!(s->sr[0x12] & CIRRUS_CURSOR_SHOW))
2279 return;
2280 /* fast test to see if the cursor intersects with the scan line */
2281 if (s->sr[0x12] & CIRRUS_CURSOR_LARGE) {
2282 h = 64;
2283 } else {
2284 h = 32;
2285 }
2286 if (scr_y < s->hw_cursor_y ||
2287 scr_y >= (s->hw_cursor_y + h))
2288 return;
2289
2290 src = s->vram_ptr + s->real_vram_size - 16 * 1024;
2291 if (s->sr[0x12] & CIRRUS_CURSOR_LARGE) {
2292 src += (s->sr[0x13] & 0x3c) * 256;
2293 src += (scr_y - s->hw_cursor_y) * 16;
2294 poffset = 8;
2295 content = ((uint32_t *)src)[0] |
2296 ((uint32_t *)src)[1] |
2297 ((uint32_t *)src)[2] |
2298 ((uint32_t *)src)[3];
2299 } else {
2300 src += (s->sr[0x13] & 0x3f) * 256;
2301 src += (scr_y - s->hw_cursor_y) * 4;
2302 poffset = 128;
2303 content = ((uint32_t *)src)[0] |
2304 ((uint32_t *)(src + 128))[0];
2305 }
2306 /* if nothing to draw, no need to continue */
2307 if (!content)
2308 return;
2309 w = h;
2310
2311 x1 = s->hw_cursor_x;
2312 if (x1 >= s->last_scr_width)
2313 return;
2314 x2 = s->hw_cursor_x + w;
2315 if (x2 > s->last_scr_width)
2316 x2 = s->last_scr_width;
2317 w = x2 - x1;
2318 palette = s->cirrus_hidden_palette;
2319 color0 = s->rgb_to_pixel(c6_to_8(palette[0x0 * 3]),
2320 c6_to_8(palette[0x0 * 3 + 1]),
2321 c6_to_8(palette[0x0 * 3 + 2]));
2322 color1 = s->rgb_to_pixel(c6_to_8(palette[0xf * 3]),
2323 c6_to_8(palette[0xf * 3 + 1]),
2324 c6_to_8(palette[0xf * 3 + 2]));
2325 bpp = ((s->ds->depth + 7) >> 3);
2326 d1 += x1 * bpp;
2327 switch(s->ds->depth) {
2328 default:
2329 break;
2330 case 8:
2331 vga_draw_cursor_line_8(d1, src, poffset, w, color0, color1, 0xff);
2332 break;
2333 case 15:
2334 vga_draw_cursor_line_16(d1, src, poffset, w, color0, color1, 0x7fff);
2335 break;
2336 case 16:
2337 vga_draw_cursor_line_16(d1, src, poffset, w, color0, color1, 0xffff);
2338 break;
2339 case 32:
2340 vga_draw_cursor_line_32(d1, src, poffset, w, color0, color1, 0xffffff);
2341 break;
2342 }
2343 }
2344
2345 /***************************************
2346 *
2347 * LFB memory access
2348 *
2349 ***************************************/
2350
2351 static uint32_t cirrus_linear_readb(void *opaque, target_phys_addr_t addr)
2352 {
2353 CirrusVGAState *s = (CirrusVGAState *) opaque;
2354 uint32_t ret;
2355
2356 addr &= s->cirrus_addr_mask;
2357
2358 if (((s->sr[0x17] & 0x44) == 0x44) &&
2359 ((addr & s->linear_mmio_mask) == s->linear_mmio_mask)) {
2360 /* memory-mapped I/O */
2361 ret = cirrus_mmio_blt_read(s, addr & 0xff);
2362 } else if (0) {
2363 /* XXX handle bitblt */
2364 ret = 0xff;
2365 } else {
2366 /* video memory */
2367 if ((s->gr[0x0B] & 0x14) == 0x14) {
2368 addr <<= 4;
2369 } else if (s->gr[0x0B] & 0x02) {
2370 addr <<= 3;
2371 }
2372 addr &= s->cirrus_addr_mask;
2373 ret = *(s->vram_ptr + addr);
2374 }
2375
2376 return ret;
2377 }
2378
2379 static uint32_t cirrus_linear_readw(void *opaque, target_phys_addr_t addr)
2380 {
2381 uint32_t v;
2382 #ifdef TARGET_WORDS_BIGENDIAN
2383 v = cirrus_linear_readb(opaque, addr) << 8;
2384 v |= cirrus_linear_readb(opaque, addr + 1);
2385 #else
2386 v = cirrus_linear_readb(opaque, addr);
2387 v |= cirrus_linear_readb(opaque, addr + 1) << 8;
2388 #endif
2389 return v;
2390 }
2391
2392 static uint32_t cirrus_linear_readl(void *opaque, target_phys_addr_t addr)
2393 {
2394 uint32_t v;
2395 #ifdef TARGET_WORDS_BIGENDIAN
2396 v = cirrus_linear_readb(opaque, addr) << 24;
2397 v |= cirrus_linear_readb(opaque, addr + 1) << 16;
2398 v |= cirrus_linear_readb(opaque, addr + 2) << 8;
2399 v |= cirrus_linear_readb(opaque, addr + 3);
2400 #else
2401 v = cirrus_linear_readb(opaque, addr);
2402 v |= cirrus_linear_readb(opaque, addr + 1) << 8;
2403 v |= cirrus_linear_readb(opaque, addr + 2) << 16;
2404 v |= cirrus_linear_readb(opaque, addr + 3) << 24;
2405 #endif
2406 return v;
2407 }
2408
2409 static void cirrus_linear_writeb(void *opaque, target_phys_addr_t addr,
2410 uint32_t val)
2411 {
2412 CirrusVGAState *s = (CirrusVGAState *) opaque;
2413 unsigned mode;
2414
2415 addr &= s->cirrus_addr_mask;
2416
2417 if (((s->sr[0x17] & 0x44) == 0x44) &&
2418 ((addr & s->linear_mmio_mask) == s->linear_mmio_mask)) {
2419 /* memory-mapped I/O */
2420 cirrus_mmio_blt_write(s, addr & 0xff, val);
2421 } else if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
2422 /* bitblt */
2423 *s->cirrus_srcptr++ = (uint8_t) val;
2424 if (s->cirrus_srcptr >= s->cirrus_srcptr_end) {
2425 cirrus_bitblt_cputovideo_next(s);
2426 }
2427 } else {
2428 /* video memory */
2429 if ((s->gr[0x0B] & 0x14) == 0x14) {
2430 addr <<= 4;
2431 } else if (s->gr[0x0B] & 0x02) {
2432 addr <<= 3;
2433 }
2434 addr &= s->cirrus_addr_mask;
2435
2436 mode = s->gr[0x05] & 0x7;
2437 if (mode < 4 || mode > 5 || ((s->gr[0x0B] & 0x4) == 0)) {
2438 *(s->vram_ptr + addr) = (uint8_t) val;
2439 cpu_physical_memory_set_dirty(s->vram_offset + addr);
2440 } else {
2441 if ((s->gr[0x0B] & 0x14) != 0x14) {
2442 cirrus_mem_writeb_mode4and5_8bpp(s, mode, addr, val);
2443 } else {
2444 cirrus_mem_writeb_mode4and5_16bpp(s, mode, addr, val);
2445 }
2446 }
2447 }
2448 }
2449
2450 static void cirrus_linear_writew(void *opaque, target_phys_addr_t addr,
2451 uint32_t val)
2452 {
2453 #ifdef TARGET_WORDS_BIGENDIAN
2454 cirrus_linear_writeb(opaque, addr, (val >> 8) & 0xff);
2455 cirrus_linear_writeb(opaque, addr + 1, val & 0xff);
2456 #else
2457 cirrus_linear_writeb(opaque, addr, val & 0xff);
2458 cirrus_linear_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2459 #endif
2460 }
2461
2462 static void cirrus_linear_writel(void *opaque, target_phys_addr_t addr,
2463 uint32_t val)
2464 {
2465 #ifdef TARGET_WORDS_BIGENDIAN
2466 cirrus_linear_writeb(opaque, addr, (val >> 24) & 0xff);
2467 cirrus_linear_writeb(opaque, addr + 1, (val >> 16) & 0xff);
2468 cirrus_linear_writeb(opaque, addr + 2, (val >> 8) & 0xff);
2469 cirrus_linear_writeb(opaque, addr + 3, val & 0xff);
2470 #else
2471 cirrus_linear_writeb(opaque, addr, val & 0xff);
2472 cirrus_linear_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2473 cirrus_linear_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2474 cirrus_linear_writeb(opaque, addr + 3, (val >> 24) & 0xff);
2475 #endif
2476 }
2477
2478
2479 static CPUReadMemoryFunc *cirrus_linear_read[3] = {
2480 cirrus_linear_readb,
2481 cirrus_linear_readw,
2482 cirrus_linear_readl,
2483 };
2484
2485 static CPUWriteMemoryFunc *cirrus_linear_write[3] = {
2486 cirrus_linear_writeb,
2487 cirrus_linear_writew,
2488 cirrus_linear_writel,
2489 };
2490
2491 static void cirrus_linear_mem_writeb(void *opaque, target_phys_addr_t addr,
2492 uint32_t val)
2493 {
2494 CirrusVGAState *s = (CirrusVGAState *) opaque;
2495
2496 addr &= s->cirrus_addr_mask;
2497 *(s->vram_ptr + addr) = val;
2498 cpu_physical_memory_set_dirty(s->vram_offset + addr);
2499 }
2500
2501 static void cirrus_linear_mem_writew(void *opaque, target_phys_addr_t addr,
2502 uint32_t val)
2503 {
2504 CirrusVGAState *s = (CirrusVGAState *) opaque;
2505
2506 addr &= s->cirrus_addr_mask;
2507 cpu_to_le16w((uint16_t *)(s->vram_ptr + addr), val);
2508 cpu_physical_memory_set_dirty(s->vram_offset + addr);
2509 }
2510
2511 static void cirrus_linear_mem_writel(void *opaque, target_phys_addr_t addr,
2512 uint32_t val)
2513 {
2514 CirrusVGAState *s = (CirrusVGAState *) opaque;
2515
2516 addr &= s->cirrus_addr_mask;
2517 cpu_to_le32w((uint32_t *)(s->vram_ptr + addr), val);
2518 cpu_physical_memory_set_dirty(s->vram_offset + addr);
2519 }
2520
2521 /***************************************
2522 *
2523 * system to screen memory access
2524 *
2525 ***************************************/
2526
2527
2528 static uint32_t cirrus_linear_bitblt_readb(void *opaque, target_phys_addr_t addr)
2529 {
2530 uint32_t ret;
2531
2532 /* XXX handle bitblt */
2533 ret = 0xff;
2534 return ret;
2535 }
2536
2537 static uint32_t cirrus_linear_bitblt_readw(void *opaque, target_phys_addr_t addr)
2538 {
2539 uint32_t v;
2540 #ifdef TARGET_WORDS_BIGENDIAN
2541 v = cirrus_linear_bitblt_readb(opaque, addr) << 8;
2542 v |= cirrus_linear_bitblt_readb(opaque, addr + 1);
2543 #else
2544 v = cirrus_linear_bitblt_readb(opaque, addr);
2545 v |= cirrus_linear_bitblt_readb(opaque, addr + 1) << 8;
2546 #endif
2547 return v;
2548 }
2549
2550 static uint32_t cirrus_linear_bitblt_readl(void *opaque, target_phys_addr_t addr)
2551 {
2552 uint32_t v;
2553 #ifdef TARGET_WORDS_BIGENDIAN
2554 v = cirrus_linear_bitblt_readb(opaque, addr) << 24;
2555 v |= cirrus_linear_bitblt_readb(opaque, addr + 1) << 16;
2556 v |= cirrus_linear_bitblt_readb(opaque, addr + 2) << 8;
2557 v |= cirrus_linear_bitblt_readb(opaque, addr + 3);
2558 #else
2559 v = cirrus_linear_bitblt_readb(opaque, addr);
2560 v |= cirrus_linear_bitblt_readb(opaque, addr + 1) << 8;
2561 v |= cirrus_linear_bitblt_readb(opaque, addr + 2) << 16;
2562 v |= cirrus_linear_bitblt_readb(opaque, addr + 3) << 24;
2563 #endif
2564 return v;
2565 }
2566
2567 static void cirrus_linear_bitblt_writeb(void *opaque, target_phys_addr_t addr,
2568 uint32_t val)
2569 {
2570 CirrusVGAState *s = (CirrusVGAState *) opaque;
2571
2572 if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
2573 /* bitblt */
2574 *s->cirrus_srcptr++ = (uint8_t) val;
2575 if (s->cirrus_srcptr >= s->cirrus_srcptr_end) {
2576 cirrus_bitblt_cputovideo_next(s);
2577 }
2578 }
2579 }
2580
2581 static void cirrus_linear_bitblt_writew(void *opaque, target_phys_addr_t addr,
2582 uint32_t val)
2583 {
2584 #ifdef TARGET_WORDS_BIGENDIAN
2585 cirrus_linear_bitblt_writeb(opaque, addr, (val >> 8) & 0xff);
2586 cirrus_linear_bitblt_writeb(opaque, addr + 1, val & 0xff);
2587 #else
2588 cirrus_linear_bitblt_writeb(opaque, addr, val & 0xff);
2589 cirrus_linear_bitblt_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2590 #endif
2591 }
2592
2593 static void cirrus_linear_bitblt_writel(void *opaque, target_phys_addr_t addr,
2594 uint32_t val)
2595 {
2596 #ifdef TARGET_WORDS_BIGENDIAN
2597 cirrus_linear_bitblt_writeb(opaque, addr, (val >> 24) & 0xff);
2598 cirrus_linear_bitblt_writeb(opaque, addr + 1, (val >> 16) & 0xff);
2599 cirrus_linear_bitblt_writeb(opaque, addr + 2, (val >> 8) & 0xff);
2600 cirrus_linear_bitblt_writeb(opaque, addr + 3, val & 0xff);
2601 #else
2602 cirrus_linear_bitblt_writeb(opaque, addr, val & 0xff);
2603 cirrus_linear_bitblt_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2604 cirrus_linear_bitblt_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2605 cirrus_linear_bitblt_writeb(opaque, addr + 3, (val >> 24) & 0xff);
2606 #endif
2607 }
2608
2609
2610 static CPUReadMemoryFunc *cirrus_linear_bitblt_read[3] = {
2611 cirrus_linear_bitblt_readb,
2612 cirrus_linear_bitblt_readw,
2613 cirrus_linear_bitblt_readl,
2614 };
2615
2616 static CPUWriteMemoryFunc *cirrus_linear_bitblt_write[3] = {
2617 cirrus_linear_bitblt_writeb,
2618 cirrus_linear_bitblt_writew,
2619 cirrus_linear_bitblt_writel,
2620 };
2621
2622 /* Compute the memory access functions */
2623 static void cirrus_update_memory_access(CirrusVGAState *s)
2624 {
2625 unsigned mode;
2626
2627 if ((s->sr[0x17] & 0x44) == 0x44) {
2628 goto generic_io;
2629 } else if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
2630 goto generic_io;
2631 } else {
2632 if ((s->gr[0x0B] & 0x14) == 0x14) {
2633 goto generic_io;
2634 } else if (s->gr[0x0B] & 0x02) {
2635 goto generic_io;
2636 }
2637
2638 mode = s->gr[0x05] & 0x7;
2639 if (mode < 4 || mode > 5 || ((s->gr[0x0B] & 0x4) == 0)) {
2640 s->cirrus_linear_write[0] = cirrus_linear_mem_writeb;
2641 s->cirrus_linear_write[1] = cirrus_linear_mem_writew;
2642 s->cirrus_linear_write[2] = cirrus_linear_mem_writel;
2643 } else {
2644 generic_io:
2645 s->cirrus_linear_write[0] = cirrus_linear_writeb;
2646 s->cirrus_linear_write[1] = cirrus_linear_writew;
2647 s->cirrus_linear_write[2] = cirrus_linear_writel;
2648 }
2649 }
2650 }
2651
2652
2653 /* I/O ports */
2654
2655 static uint32_t vga_ioport_read(void *opaque, uint32_t addr)
2656 {
2657 CirrusVGAState *s = opaque;
2658 int val, index;
2659
2660 /* check port range access depending on color/monochrome mode */
2661 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION))
2662 || (addr >= 0x3d0 && addr <= 0x3df
2663 && !(s->msr & MSR_COLOR_EMULATION))) {
2664 val = 0xff;
2665 } else {
2666 switch (addr) {
2667 case 0x3c0:
2668 if (s->ar_flip_flop == 0) {
2669 val = s->ar_index;
2670 } else {
2671 val = 0;
2672 }
2673 break;
2674 case 0x3c1:
2675 index = s->ar_index & 0x1f;
2676 if (index < 21)
2677 val = s->ar[index];
2678 else
2679 val = 0;
2680 break;
2681 case 0x3c2:
2682 val = s->st00;
2683 break;
2684 case 0x3c4:
2685 val = s->sr_index;
2686 break;
2687 case 0x3c5:
2688 if (cirrus_hook_read_sr(s, s->sr_index, &val))
2689 break;
2690 val = s->sr[s->sr_index];
2691 #ifdef DEBUG_VGA_REG
2692 printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
2693 #endif
2694 break;
2695 case 0x3c6:
2696 cirrus_read_hidden_dac(s, &val);
2697 break;
2698 case 0x3c7:
2699 val = s->dac_state;
2700 break;
2701 case 0x3c8:
2702 val = s->dac_write_index;
2703 s->cirrus_hidden_dac_lockindex = 0;
2704 break;
2705 case 0x3c9:
2706 if (cirrus_hook_read_palette(s, &val))
2707 break;
2708 val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
2709 if (++s->dac_sub_index == 3) {
2710 s->dac_sub_index = 0;
2711 s->dac_read_index++;
2712 }
2713 break;
2714 case 0x3ca:
2715 val = s->fcr;
2716 break;
2717 case 0x3cc:
2718 val = s->msr;
2719 break;
2720 case 0x3ce:
2721 val = s->gr_index;
2722 break;
2723 case 0x3cf:
2724 if (cirrus_hook_read_gr(s, s->gr_index, &val))
2725 break;
2726 val = s->gr[s->gr_index];
2727 #ifdef DEBUG_VGA_REG
2728 printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
2729 #endif
2730 break;
2731 case 0x3b4:
2732 case 0x3d4:
2733 val = s->cr_index;
2734 break;
2735 case 0x3b5:
2736 case 0x3d5:
2737 if (cirrus_hook_read_cr(s, s->cr_index, &val))
2738 break;
2739 val = s->cr[s->cr_index];
2740 #ifdef DEBUG_VGA_REG
2741 printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
2742 #endif
2743 break;
2744 case 0x3ba:
2745 case 0x3da:
2746 /* just toggle to fool polling */
2747 s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE;
2748 val = s->st01;
2749 s->ar_flip_flop = 0;
2750 break;
2751 default:
2752 val = 0x00;
2753 break;
2754 }
2755 }
2756 #if defined(DEBUG_VGA)
2757 printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
2758 #endif
2759 return val;
2760 }
2761
2762 static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
2763 {
2764 CirrusVGAState *s = opaque;
2765 int index;
2766
2767 /* check port range access depending on color/monochrome mode */
2768 if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION))
2769 || (addr >= 0x3d0 && addr <= 0x3df
2770 && !(s->msr & MSR_COLOR_EMULATION)))
2771 return;
2772
2773 #ifdef DEBUG_VGA
2774 printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
2775 #endif
2776
2777 switch (addr) {
2778 case 0x3c0:
2779 if (s->ar_flip_flop == 0) {
2780 val &= 0x3f;
2781 s->ar_index = val;
2782 } else {
2783 index = s->ar_index & 0x1f;
2784 switch (index) {
2785 case 0x00 ... 0x0f:
2786 s->ar[index] = val & 0x3f;
2787 break;
2788 case 0x10:
2789 s->ar[index] = val & ~0x10;
2790 break;
2791 case 0x11:
2792 s->ar[index] = val;
2793 break;
2794 case 0x12:
2795 s->ar[index] = val & ~0xc0;
2796 break;
2797 case 0x13:
2798 s->ar[index] = val & ~0xf0;
2799 break;
2800 case 0x14:
2801 s->ar[index] = val & ~0xf0;
2802 break;
2803 default:
2804 break;
2805 }
2806 }
2807 s->ar_flip_flop ^= 1;
2808 break;
2809 case 0x3c2:
2810 s->msr = val & ~0x10;
2811 break;
2812 case 0x3c4:
2813 s->sr_index = val;
2814 break;
2815 case 0x3c5:
2816 if (cirrus_hook_write_sr(s, s->sr_index, val))
2817 break;
2818 #ifdef DEBUG_VGA_REG
2819 printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
2820 #endif
2821 s->sr[s->sr_index] = val & sr_mask[s->sr_index];
2822 break;
2823 case 0x3c6:
2824 cirrus_write_hidden_dac(s, val);
2825 break;
2826 case 0x3c7:
2827 s->dac_read_index = val;
2828 s->dac_sub_index = 0;
2829 s->dac_state = 3;
2830 break;
2831 case 0x3c8:
2832 s->dac_write_index = val;
2833 s->dac_sub_index = 0;
2834 s->dac_state = 0;
2835 break;
2836 case 0x3c9:
2837 if (cirrus_hook_write_palette(s, val))
2838 break;
2839 s->dac_cache[s->dac_sub_index] = val;
2840 if (++s->dac_sub_index == 3) {
2841 memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3);
2842 s->dac_sub_index = 0;
2843 s->dac_write_index++;
2844 }
2845 break;
2846 case 0x3ce:
2847 s->gr_index = val;
2848 break;
2849 case 0x3cf:
2850 if (cirrus_hook_write_gr(s, s->gr_index, val))
2851 break;
2852 #ifdef DEBUG_VGA_REG
2853 printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
2854 #endif
2855 s->gr[s->gr_index] = val & gr_mask[s->gr_index];
2856 break;
2857 case 0x3b4:
2858 case 0x3d4:
2859 s->cr_index = val;
2860 break;
2861 case 0x3b5:
2862 case 0x3d5:
2863 if (cirrus_hook_write_cr(s, s->cr_index, val))
2864 break;
2865 #ifdef DEBUG_VGA_REG
2866 printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
2867 #endif
2868 /* handle CR0-7 protection */
2869 if ((s->cr[0x11] & 0x80) && s->cr_index <= 7) {
2870 /* can always write bit 4 of CR7 */
2871 if (s->cr_index == 7)
2872 s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10);
2873 return;
2874 }
2875 switch (s->cr_index) {
2876 case 0x01: /* horizontal display end */
2877 case 0x07:
2878 case 0x09:
2879 case 0x0c:
2880 case 0x0d:
2881 case 0x12: /* vertical display end */
2882 s->cr[s->cr_index] = val;
2883 break;
2884
2885 default:
2886 s->cr[s->cr_index] = val;
2887 break;
2888 }
2889 break;
2890 case 0x3ba:
2891 case 0x3da:
2892 s->fcr = val & 0x10;
2893 break;
2894 }
2895 }
2896
2897 /***************************************
2898 *
2899 * memory-mapped I/O access
2900 *
2901 ***************************************/
2902
2903 static uint32_t cirrus_mmio_readb(void *opaque, target_phys_addr_t addr)
2904 {
2905 CirrusVGAState *s = (CirrusVGAState *) opaque;
2906
2907 addr &= CIRRUS_PNPMMIO_SIZE - 1;
2908
2909 if (addr >= 0x100) {
2910 return cirrus_mmio_blt_read(s, addr - 0x100);
2911 } else {
2912 return vga_ioport_read(s, addr + 0x3c0);
2913 }
2914 }
2915
2916 static uint32_t cirrus_mmio_readw(void *opaque, target_phys_addr_t addr)
2917 {
2918 uint32_t v;
2919 #ifdef TARGET_WORDS_BIGENDIAN
2920 v = cirrus_mmio_readb(opaque, addr) << 8;
2921 v |= cirrus_mmio_readb(opaque, addr + 1);
2922 #else
2923 v = cirrus_mmio_readb(opaque, addr);
2924 v |= cirrus_mmio_readb(opaque, addr + 1) << 8;
2925 #endif
2926 return v;
2927 }
2928
2929 static uint32_t cirrus_mmio_readl(void *opaque, target_phys_addr_t addr)
2930 {
2931 uint32_t v;
2932 #ifdef TARGET_WORDS_BIGENDIAN
2933 v = cirrus_mmio_readb(opaque, addr) << 24;
2934 v |= cirrus_mmio_readb(opaque, addr + 1) << 16;
2935 v |= cirrus_mmio_readb(opaque, addr + 2) << 8;
2936 v |= cirrus_mmio_readb(opaque, addr + 3);
2937 #else
2938 v = cirrus_mmio_readb(opaque, addr);
2939 v |= cirrus_mmio_readb(opaque, addr + 1) << 8;
2940 v |= cirrus_mmio_readb(opaque, addr + 2) << 16;
2941 v |= cirrus_mmio_readb(opaque, addr + 3) << 24;
2942 #endif
2943 return v;
2944 }
2945
2946 static void cirrus_mmio_writeb(void *opaque, target_phys_addr_t addr,
2947 uint32_t val)
2948 {
2949 CirrusVGAState *s = (CirrusVGAState *) opaque;
2950
2951 addr &= CIRRUS_PNPMMIO_SIZE - 1;
2952
2953 if (addr >= 0x100) {
2954 cirrus_mmio_blt_write(s, addr - 0x100, val);
2955 } else {
2956 vga_ioport_write(s, addr + 0x3c0, val);
2957 }
2958 }
2959
2960 static void cirrus_mmio_writew(void *opaque, target_phys_addr_t addr,
2961 uint32_t val)
2962 {
2963 #ifdef TARGET_WORDS_BIGENDIAN
2964 cirrus_mmio_writeb(opaque, addr, (val >> 8) & 0xff);
2965 cirrus_mmio_writeb(opaque, addr + 1, val & 0xff);
2966 #else
2967 cirrus_mmio_writeb(opaque, addr, val & 0xff);
2968 cirrus_mmio_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2969 #endif
2970 }
2971
2972 static void cirrus_mmio_writel(void *opaque, target_phys_addr_t addr,
2973 uint32_t val)
2974 {
2975 #ifdef TARGET_WORDS_BIGENDIAN
2976 cirrus_mmio_writeb(opaque, addr, (val >> 24) & 0xff);
2977 cirrus_mmio_writeb(opaque, addr + 1, (val >> 16) & 0xff);
2978 cirrus_mmio_writeb(opaque, addr + 2, (val >> 8) & 0xff);
2979 cirrus_mmio_writeb(opaque, addr + 3, val & 0xff);
2980 #else
2981 cirrus_mmio_writeb(opaque, addr, val & 0xff);
2982 cirrus_mmio_writeb(opaque, addr + 1, (val >> 8) & 0xff);
2983 cirrus_mmio_writeb(opaque, addr + 2, (val >> 16) & 0xff);
2984 cirrus_mmio_writeb(opaque, addr + 3, (val >> 24) & 0xff);
2985 #endif
2986 }
2987
2988
2989 static CPUReadMemoryFunc *cirrus_mmio_read[3] = {
2990 cirrus_mmio_readb,
2991 cirrus_mmio_readw,
2992 cirrus_mmio_readl,
2993 };
2994
2995 static CPUWriteMemoryFunc *cirrus_mmio_write[3] = {
2996 cirrus_mmio_writeb,
2997 cirrus_mmio_writew,
2998 cirrus_mmio_writel,
2999 };
3000
3001 /* load/save state */
3002
3003 static void cirrus_vga_save(QEMUFile *f, void *opaque)
3004 {
3005 CirrusVGAState *s = opaque;
3006
3007 if (s->pci_dev)
3008 pci_device_save(s->pci_dev, f);
3009
3010 qemu_put_be32s(f, &s->latch);
3011 qemu_put_8s(f, &s->sr_index);
3012 qemu_put_buffer(f, s->sr, 256);
3013 qemu_put_8s(f, &s->gr_index);
3014 qemu_put_8s(f, &s->cirrus_shadow_gr0);
3015 qemu_put_8s(f, &s->cirrus_shadow_gr1);
3016 qemu_put_buffer(f, s->gr + 2, 254);
3017 qemu_put_8s(f, &s->ar_index);
3018 qemu_put_buffer(f, s->ar, 21);
3019 qemu_put_be32(f, s->ar_flip_flop);
3020 qemu_put_8s(f, &s->cr_index);
3021 qemu_put_buffer(f, s->cr, 256);
3022 qemu_put_8s(f, &s->msr);
3023 qemu_put_8s(f, &s->fcr);
3024 qemu_put_8s(f, &s->st00);
3025 qemu_put_8s(f, &s->st01);
3026
3027 qemu_put_8s(f, &s->dac_state);
3028 qemu_put_8s(f, &s->dac_sub_index);
3029 qemu_put_8s(f, &s->dac_read_index);
3030 qemu_put_8s(f, &s->dac_write_index);
3031 qemu_put_buffer(f, s->dac_cache, 3);
3032 qemu_put_buffer(f, s->palette, 768);
3033
3034 qemu_put_be32(f, s->bank_offset);
3035
3036 qemu_put_8s(f, &s->cirrus_hidden_dac_lockindex);
3037 qemu_put_8s(f, &s->cirrus_hidden_dac_data);
3038
3039 qemu_put_be32s(f, &s->hw_cursor_x);
3040 qemu_put_be32s(f, &s->hw_cursor_y);
3041 /* XXX: we do not save the bitblt state - we assume we do not save
3042 the state when the blitter is active */
3043 }
3044
3045 static int cirrus_vga_load(QEMUFile *f, void *opaque, int version_id)
3046 {
3047 CirrusVGAState *s = opaque;
3048 int ret;
3049
3050 if (version_id > 2)
3051 return -EINVAL;
3052
3053 if (s->pci_dev && version_id >= 2) {
3054 ret = pci_device_load(s->pci_dev, f);
3055 if (ret < 0)
3056 return ret;
3057 }
3058
3059 qemu_get_be32s(f, &s->latch);
3060 qemu_get_8s(f, &s->sr_index);
3061 qemu_get_buffer(f, s->sr, 256);
3062 qemu_get_8s(f, &s->gr_index);
3063 qemu_get_8s(f, &s->cirrus_shadow_gr0);
3064 qemu_get_8s(f, &s->cirrus_shadow_gr1);
3065 s->gr[0x00] = s->cirrus_shadow_gr0 & 0x0f;
3066 s->gr[0x01] = s->cirrus_shadow_gr1 & 0x0f;
3067 qemu_get_buffer(f, s->gr + 2, 254);
3068 qemu_get_8s(f, &s->ar_index);
3069 qemu_get_buffer(f, s->ar, 21);
3070 s->ar_flip_flop=qemu_get_be32(f);
3071 qemu_get_8s(f, &s->cr_index);
3072 qemu_get_buffer(f, s->cr, 256);
3073 qemu_get_8s(f, &s->msr);
3074 qemu_get_8s(f, &s->fcr);
3075 qemu_get_8s(f, &s->st00);
3076 qemu_get_8s(f, &s->st01);
3077
3078 qemu_get_8s(f, &s->dac_state);
3079 qemu_get_8s(f, &s->dac_sub_index);
3080 qemu_get_8s(f, &s->dac_read_index);
3081 qemu_get_8s(f, &s->dac_write_index);
3082 qemu_get_buffer(f, s->dac_cache, 3);
3083 qemu_get_buffer(f, s->palette, 768);
3084
3085 s->bank_offset=qemu_get_be32(f);
3086
3087 qemu_get_8s(f, &s->cirrus_hidden_dac_lockindex);
3088 qemu_get_8s(f, &s->cirrus_hidden_dac_data);
3089
3090 qemu_get_be32s(f, &s->hw_cursor_x);
3091 qemu_get_be32s(f, &s->hw_cursor_y);
3092
3093 /* force refresh */
3094 s->graphic_mode = -1;
3095 cirrus_update_bank_ptr(s, 0);
3096 cirrus_update_bank_ptr(s, 1);
3097 return 0;
3098 }
3099
3100 /***************************************
3101 *
3102 * initialize
3103 *
3104 ***************************************/
3105
3106 static void cirrus_init_common(CirrusVGAState * s, int device_id, int is_pci)
3107 {
3108 int vga_io_memory, i;
3109 static int inited;
3110
3111 if (!inited) {
3112 inited = 1;
3113 for(i = 0;i < 256; i++)
3114 rop_to_index[i] = CIRRUS_ROP_NOP_INDEX; /* nop rop */
3115 rop_to_index[CIRRUS_ROP_0] = 0;
3116 rop_to_index[CIRRUS_ROP_SRC_AND_DST] = 1;
3117 rop_to_index[CIRRUS_ROP_NOP] = 2;
3118 rop_to_index[CIRRUS_ROP_SRC_AND_NOTDST] = 3;
3119 rop_to_index[CIRRUS_ROP_NOTDST] = 4;
3120 rop_to_index[CIRRUS_ROP_SRC] = 5;
3121 rop_to_index[CIRRUS_ROP_1] = 6;
3122 rop_to_index[CIRRUS_ROP_NOTSRC_AND_DST] = 7;
3123 rop_to_index[CIRRUS_ROP_SRC_XOR_DST] = 8;
3124 rop_to_index[CIRRUS_ROP_SRC_OR_DST] = 9;
3125 rop_to_index[CIRRUS_ROP_NOTSRC_OR_NOTDST] = 10;
3126 rop_to_index[CIRRUS_ROP_SRC_NOTXOR_DST] = 11;
3127 rop_to_index[CIRRUS_ROP_SRC_OR_NOTDST] = 12;
3128 rop_to_index[CIRRUS_ROP_NOTSRC] = 13;
3129 rop_to_index[CIRRUS_ROP_NOTSRC_OR_DST] = 14;
3130 rop_to_index[CIRRUS_ROP_NOTSRC_AND_NOTDST] = 15;
3131 }
3132
3133 register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s);
3134
3135 register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s);
3136 register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s);
3137 register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s);
3138 register_ioport_write(0x3da, 1, 1, vga_ioport_write, s);
3139
3140 register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s);
3141
3142 register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s);
3143 register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s);
3144 register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s);
3145 register_ioport_read(0x3da, 1, 1, vga_ioport_read, s);
3146
3147 vga_io_memory = cpu_register_io_memory(0, cirrus_vga_mem_read,
3148 cirrus_vga_mem_write, s);
3149 cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
3150 vga_io_memory);
3151
3152 s->sr[0x06] = 0x0f;
3153 if (device_id == CIRRUS_ID_CLGD5446) {
3154 /* 4MB 64 bit memory config, always PCI */
3155 s->sr[0x1F] = 0x2d; // MemClock
3156 s->gr[0x18] = 0x0f; // fastest memory configuration
3157 #if 1
3158 s->sr[0x0f] = 0x98;
3159 s->sr[0x17] = 0x20;
3160 s->sr[0x15] = 0x04; /* memory size, 3=2MB, 4=4MB */
3161 s->real_vram_size = 4096 * 1024;
3162 #else
3163 s->sr[0x0f] = 0x18;
3164 s->sr[0x17] = 0x20;
3165 s->sr[0x15] = 0x03; /* memory size, 3=2MB, 4=4MB */
3166 s->real_vram_size = 2048 * 1024;
3167 #endif
3168 } else {
3169 s->sr[0x1F] = 0x22; // MemClock
3170 s->sr[0x0F] = CIRRUS_MEMSIZE_2M;
3171 if (is_pci)
3172 s->sr[0x17] = CIRRUS_BUSTYPE_PCI;
3173 else
3174 s->sr[0x17] = CIRRUS_BUSTYPE_ISA;
3175 s->real_vram_size = 2048 * 1024;
3176 s->sr[0x15] = 0x03; /* memory size, 3=2MB, 4=4MB */
3177 }
3178 s->cr[0x27] = device_id;
3179
3180 /* Win2K seems to assume that the pattern buffer is at 0xff
3181 initially ! */
3182 memset(s->vram_ptr, 0xff, s->real_vram_size);
3183
3184 s->cirrus_hidden_dac_lockindex = 5;
3185 s->cirrus_hidden_dac_data = 0;
3186
3187 /* I/O handler for LFB */
3188 s->cirrus_linear_io_addr =
3189 cpu_register_io_memory(0, cirrus_linear_read, cirrus_linear_write,
3190 s);
3191 s->cirrus_linear_write = cpu_get_io_memory_write(s->cirrus_linear_io_addr);
3192
3193 /* I/O handler for LFB */
3194 s->cirrus_linear_bitblt_io_addr =
3195 cpu_register_io_memory(0, cirrus_linear_bitblt_read, cirrus_linear_bitblt_write,
3196 s);
3197
3198 /* I/O handler for memory-mapped I/O */
3199 s->cirrus_mmio_io_addr =
3200 cpu_register_io_memory(0, cirrus_mmio_read, cirrus_mmio_write, s);
3201
3202 /* XXX: s->vram_size must be a power of two */
3203 s->cirrus_addr_mask = s->real_vram_size - 1;
3204 s->linear_mmio_mask = s->real_vram_size - 256;
3205
3206 s->get_bpp = cirrus_get_bpp;
3207 s->get_offsets = cirrus_get_offsets;
3208 s->get_resolution = cirrus_get_resolution;
3209 s->cursor_invalidate = cirrus_cursor_invalidate;
3210 s->cursor_draw_line = cirrus_cursor_draw_line;
3211
3212 register_savevm("cirrus_vga", 0, 2, cirrus_vga_save, cirrus_vga_load, s);
3213 }
3214
3215 /***************************************
3216 *
3217 * ISA bus support
3218 *
3219 ***************************************/
3220
3221 void isa_cirrus_vga_init(DisplayState *ds, uint8_t *vga_ram_base,
3222 unsigned long vga_ram_offset, int vga_ram_size)
3223 {
3224 CirrusVGAState *s;
3225
3226 s = qemu_mallocz(sizeof(CirrusVGAState));
3227
3228 vga_common_init((VGAState *)s,
3229 ds, vga_ram_base, vga_ram_offset, vga_ram_size);
3230 cirrus_init_common(s, CIRRUS_ID_CLGD5430, 0);
3231 /* XXX ISA-LFB support */
3232 }
3233
3234 /***************************************
3235 *
3236 * PCI bus support
3237 *
3238 ***************************************/
3239
3240 static void cirrus_pci_lfb_map(PCIDevice *d, int region_num,
3241 uint32_t addr, uint32_t size, int type)
3242 {
3243 CirrusVGAState *s = &((PCICirrusVGAState *)d)->cirrus_vga;
3244
3245 /* XXX: add byte swapping apertures */
3246 cpu_register_physical_memory(addr, s->vram_size,
3247 s->cirrus_linear_io_addr);
3248 cpu_register_physical_memory(addr + 0x1000000, 0x400000,
3249 s->cirrus_linear_bitblt_io_addr);
3250 }
3251
3252 static void cirrus_pci_mmio_map(PCIDevice *d, int region_num,
3253 uint32_t addr, uint32_t size, int type)
3254 {
3255 CirrusVGAState *s = &((PCICirrusVGAState *)d)->cirrus_vga;
3256
3257 cpu_register_physical_memory(addr, CIRRUS_PNPMMIO_SIZE,
3258 s->cirrus_mmio_io_addr);
3259 }
3260
3261 void pci_cirrus_vga_init(PCIBus *bus, DisplayState *ds, uint8_t *vga_ram_base,
3262 unsigned long vga_ram_offset, int vga_ram_size)
3263 {
3264 PCICirrusVGAState *d;
3265 uint8_t *pci_conf;
3266 CirrusVGAState *s;
3267 int device_id;
3268
3269 device_id = CIRRUS_ID_CLGD5446;
3270
3271 /* setup PCI configuration registers */
3272 d = (PCICirrusVGAState *)pci_register_device(bus, "Cirrus VGA",
3273 sizeof(PCICirrusVGAState),
3274 -1, NULL, NULL);
3275 pci_conf = d->dev.config;
3276 pci_conf[0x00] = (uint8_t) (PCI_VENDOR_CIRRUS & 0xff);
3277 pci_conf[0x01] = (uint8_t) (PCI_VENDOR_CIRRUS >> 8);
3278 pci_conf[0x02] = (uint8_t) (device_id & 0xff);
3279 pci_conf[0x03] = (uint8_t) (device_id >> 8);
3280 pci_conf[0x04] = PCI_COMMAND_IOACCESS | PCI_COMMAND_MEMACCESS;
3281 pci_conf[0x0a] = PCI_CLASS_SUB_VGA;
3282 pci_conf[0x0b] = PCI_CLASS_BASE_DISPLAY;
3283 pci_conf[0x0e] = PCI_CLASS_HEADERTYPE_00h;
3284
3285 /* setup VGA */
3286 s = &d->cirrus_vga;
3287 vga_common_init((VGAState *)s,
3288 ds, vga_ram_base, vga_ram_offset, vga_ram_size);
3289 cirrus_init_common(s, device_id, 1);
3290
3291 graphic_console_init(s->ds, s->update, s->invalidate, s->screen_dump,
3292 s->text_update, s);
3293
3294 s->pci_dev = (PCIDevice *)d;
3295
3296 /* setup memory space */
3297 /* memory #0 LFB */
3298 /* memory #1 memory-mapped I/O */
3299 /* XXX: s->vram_size must be a power of two */
3300 pci_register_io_region((PCIDevice *)d, 0, 0x2000000,
3301 PCI_ADDRESS_SPACE_MEM_PREFETCH, cirrus_pci_lfb_map);
3302 if (device_id == CIRRUS_ID_CLGD5446) {
3303 pci_register_io_region((PCIDevice *)d, 1, CIRRUS_PNPMMIO_SIZE,
3304 PCI_ADDRESS_SPACE_MEM, cirrus_pci_mmio_map);
3305 }
3306 /* XXX: ROM BIOS */
3307 }
jz4740 based target emulation