4 * Copyright (c) 2003 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 #include "qemu/osdep.h"
25 #include "qapi/error.h"
27 #include "hw/display/vga.h"
28 #include "hw/pci/pci.h"
31 #include "ui/pixel_ops.h"
32 #include "qemu/timer.h"
33 #include "hw/xen/xen.h"
36 //#define DEBUG_VGA_MEM
37 //#define DEBUG_VGA_REG
39 /* 16 state changes per vertical frame @60 Hz */
40 #define VGA_TEXT_CURSOR_PERIOD_MS (1000 * 2 * 16 / 60)
43 * Video Graphics Array (VGA)
45 * Chipset docs for original IBM VGA:
46 * http://www.mcamafia.de/pdf/ibm_vgaxga_trm2.pdf
49 * http://www.osdever.net/FreeVGA/home.htm
51 * Standard VGA features and Bochs VBE extensions are implemented.
54 /* force some bits to zero */
55 const uint8_t sr_mask
[8] = {
66 const uint8_t gr_mask
[16] = {
85 #define cbswap_32(__x) \
87 (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
88 (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
89 (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
90 (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) ))
92 #ifdef HOST_WORDS_BIGENDIAN
93 #define PAT(x) cbswap_32(x)
98 #ifdef HOST_WORDS_BIGENDIAN
104 #ifdef HOST_WORDS_BIGENDIAN
105 #define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff)
107 #define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff)
110 static const uint32_t mask16
[16] = {
131 #ifdef HOST_WORDS_BIGENDIAN
134 #define PAT(x) cbswap_32(x)
137 static uint32_t expand4
[256];
138 static uint16_t expand2
[256];
139 static uint8_t expand4to8
[16];
141 static void vbe_update_vgaregs(VGACommonState
*s
);
143 static inline bool vbe_enabled(VGACommonState
*s
)
145 return s
->vbe_regs
[VBE_DISPI_INDEX_ENABLE
] & VBE_DISPI_ENABLED
;
148 static inline uint8_t sr(VGACommonState
*s
, int idx
)
150 return vbe_enabled(s
) ? s
->sr_vbe
[idx
] : s
->sr
[idx
];
153 static void vga_update_memory_access(VGACommonState
*s
)
155 hwaddr base
, offset
, size
;
157 if (s
->legacy_address_space
== NULL
) {
161 if (s
->has_chain4_alias
) {
162 memory_region_del_subregion(s
->legacy_address_space
, &s
->chain4_alias
);
163 object_unparent(OBJECT(&s
->chain4_alias
));
164 s
->has_chain4_alias
= false;
165 s
->plane_updated
= 0xf;
167 if ((sr(s
, VGA_SEQ_PLANE_WRITE
) & VGA_SR02_ALL_PLANES
) ==
168 VGA_SR02_ALL_PLANES
&& sr(s
, VGA_SEQ_MEMORY_MODE
) & VGA_SR04_CHN_4M
) {
170 switch ((s
->gr
[VGA_GFX_MISC
] >> 2) & 3) {
178 offset
= s
->bank_offset
;
190 assert(offset
+ size
<= s
->vram_size
);
191 memory_region_init_alias(&s
->chain4_alias
, memory_region_owner(&s
->vram
),
192 "vga.chain4", &s
->vram
, offset
, size
);
193 memory_region_add_subregion_overlap(s
->legacy_address_space
, base
,
194 &s
->chain4_alias
, 2);
195 s
->has_chain4_alias
= true;
199 static void vga_dumb_update_retrace_info(VGACommonState
*s
)
204 static void vga_precise_update_retrace_info(VGACommonState
*s
)
207 int hretr_start_char
;
208 int hretr_skew_chars
;
212 int vretr_start_line
;
221 const int clk_hz
[] = {25175000, 28322000, 25175000, 25175000};
222 int64_t chars_per_sec
;
223 struct vga_precise_retrace
*r
= &s
->retrace_info
.precise
;
225 htotal_chars
= s
->cr
[VGA_CRTC_H_TOTAL
] + 5;
226 hretr_start_char
= s
->cr
[VGA_CRTC_H_SYNC_START
];
227 hretr_skew_chars
= (s
->cr
[VGA_CRTC_H_SYNC_END
] >> 5) & 3;
228 hretr_end_char
= s
->cr
[VGA_CRTC_H_SYNC_END
] & 0x1f;
230 vtotal_lines
= (s
->cr
[VGA_CRTC_V_TOTAL
] |
231 (((s
->cr
[VGA_CRTC_OVERFLOW
] & 1) |
232 ((s
->cr
[VGA_CRTC_OVERFLOW
] >> 4) & 2)) << 8)) + 2;
233 vretr_start_line
= s
->cr
[VGA_CRTC_V_SYNC_START
] |
234 ((((s
->cr
[VGA_CRTC_OVERFLOW
] >> 2) & 1) |
235 ((s
->cr
[VGA_CRTC_OVERFLOW
] >> 6) & 2)) << 8);
236 vretr_end_line
= s
->cr
[VGA_CRTC_V_SYNC_END
] & 0xf;
238 clocking_mode
= (sr(s
, VGA_SEQ_CLOCK_MODE
) >> 3) & 1;
239 clock_sel
= (s
->msr
>> 2) & 3;
240 dots
= (s
->msr
& 1) ? 8 : 9;
242 chars_per_sec
= clk_hz
[clock_sel
] / dots
;
244 htotal_chars
<<= clocking_mode
;
246 r
->total_chars
= vtotal_lines
* htotal_chars
;
248 r
->ticks_per_char
= NANOSECONDS_PER_SECOND
/ (r
->total_chars
* r
->freq
);
250 r
->ticks_per_char
= NANOSECONDS_PER_SECOND
/ chars_per_sec
;
253 r
->vstart
= vretr_start_line
;
254 r
->vend
= r
->vstart
+ vretr_end_line
+ 1;
256 r
->hstart
= hretr_start_char
+ hretr_skew_chars
;
257 r
->hend
= r
->hstart
+ hretr_end_char
+ 1;
258 r
->htotal
= htotal_chars
;
261 div2
= (s
->cr
[VGA_CRTC_MODE
] >> 2) & 1;
262 sldiv2
= (s
->cr
[VGA_CRTC_MODE
] >> 3) & 1;
272 "div2 = %d sldiv2 = %d\n"
273 "clocking_mode = %d\n"
274 "clock_sel = %d %d\n"
276 "ticks/char = %" PRId64
"\n"
278 (double) NANOSECONDS_PER_SECOND
/ (r
->ticks_per_char
* r
->total_chars
),
296 static uint8_t vga_precise_retrace(VGACommonState
*s
)
298 struct vga_precise_retrace
*r
= &s
->retrace_info
.precise
;
299 uint8_t val
= s
->st01
& ~(ST01_V_RETRACE
| ST01_DISP_ENABLE
);
301 if (r
->total_chars
) {
302 int cur_line
, cur_line_char
, cur_char
;
305 cur_tick
= qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
);
307 cur_char
= (cur_tick
/ r
->ticks_per_char
) % r
->total_chars
;
308 cur_line
= cur_char
/ r
->htotal
;
310 if (cur_line
>= r
->vstart
&& cur_line
<= r
->vend
) {
311 val
|= ST01_V_RETRACE
| ST01_DISP_ENABLE
;
313 cur_line_char
= cur_char
% r
->htotal
;
314 if (cur_line_char
>= r
->hstart
&& cur_line_char
<= r
->hend
) {
315 val
|= ST01_DISP_ENABLE
;
321 return s
->st01
^ (ST01_V_RETRACE
| ST01_DISP_ENABLE
);
325 static uint8_t vga_dumb_retrace(VGACommonState
*s
)
327 return s
->st01
^ (ST01_V_RETRACE
| ST01_DISP_ENABLE
);
330 int vga_ioport_invalid(VGACommonState
*s
, uint32_t addr
)
332 if (s
->msr
& VGA_MIS_COLOR
) {
334 return (addr
>= 0x3b0 && addr
<= 0x3bf);
337 return (addr
>= 0x3d0 && addr
<= 0x3df);
341 uint32_t vga_ioport_read(void *opaque
, uint32_t addr
)
343 VGACommonState
*s
= opaque
;
346 if (vga_ioport_invalid(s
, addr
)) {
351 if (s
->ar_flip_flop
== 0) {
358 index
= s
->ar_index
& 0x1f;
359 if (index
< VGA_ATT_C
) {
372 val
= s
->sr
[s
->sr_index
];
374 printf("vga: read SR%x = 0x%02x\n", s
->sr_index
, val
);
381 val
= s
->dac_write_index
;
384 val
= s
->palette
[s
->dac_read_index
* 3 + s
->dac_sub_index
];
385 if (++s
->dac_sub_index
== 3) {
386 s
->dac_sub_index
= 0;
400 val
= s
->gr
[s
->gr_index
];
402 printf("vga: read GR%x = 0x%02x\n", s
->gr_index
, val
);
411 val
= s
->cr
[s
->cr_index
];
413 printf("vga: read CR%x = 0x%02x\n", s
->cr_index
, val
);
418 /* just toggle to fool polling */
419 val
= s
->st01
= s
->retrace(s
);
427 trace_vga_std_read_io(addr
, val
);
431 void vga_ioport_write(void *opaque
, uint32_t addr
, uint32_t val
)
433 VGACommonState
*s
= opaque
;
436 /* check port range access depending on color/monochrome mode */
437 if (vga_ioport_invalid(s
, addr
)) {
440 trace_vga_std_write_io(addr
, val
);
444 if (s
->ar_flip_flop
== 0) {
448 index
= s
->ar_index
& 0x1f;
450 case VGA_ATC_PALETTE0
... VGA_ATC_PALETTEF
:
451 s
->ar
[index
] = val
& 0x3f;
454 s
->ar
[index
] = val
& ~0x10;
456 case VGA_ATC_OVERSCAN
:
459 case VGA_ATC_PLANE_ENABLE
:
460 s
->ar
[index
] = val
& ~0xc0;
463 s
->ar
[index
] = val
& ~0xf0;
465 case VGA_ATC_COLOR_PAGE
:
466 s
->ar
[index
] = val
& ~0xf0;
472 s
->ar_flip_flop
^= 1;
475 s
->msr
= val
& ~0x10;
476 s
->update_retrace_info(s
);
479 s
->sr_index
= val
& 7;
483 printf("vga: write SR%x = 0x%02x\n", s
->sr_index
, val
);
485 s
->sr
[s
->sr_index
] = val
& sr_mask
[s
->sr_index
];
486 if (s
->sr_index
== VGA_SEQ_CLOCK_MODE
) {
487 s
->update_retrace_info(s
);
489 vga_update_memory_access(s
);
492 s
->dac_read_index
= val
;
493 s
->dac_sub_index
= 0;
497 s
->dac_write_index
= val
;
498 s
->dac_sub_index
= 0;
502 s
->dac_cache
[s
->dac_sub_index
] = val
;
503 if (++s
->dac_sub_index
== 3) {
504 memcpy(&s
->palette
[s
->dac_write_index
* 3], s
->dac_cache
, 3);
505 s
->dac_sub_index
= 0;
506 s
->dac_write_index
++;
510 s
->gr_index
= val
& 0x0f;
514 printf("vga: write GR%x = 0x%02x\n", s
->gr_index
, val
);
516 s
->gr
[s
->gr_index
] = val
& gr_mask
[s
->gr_index
];
517 vbe_update_vgaregs(s
);
518 vga_update_memory_access(s
);
527 printf("vga: write CR%x = 0x%02x\n", s
->cr_index
, val
);
529 /* handle CR0-7 protection */
530 if ((s
->cr
[VGA_CRTC_V_SYNC_END
] & VGA_CR11_LOCK_CR0_CR7
) &&
531 s
->cr_index
<= VGA_CRTC_OVERFLOW
) {
532 /* can always write bit 4 of CR7 */
533 if (s
->cr_index
== VGA_CRTC_OVERFLOW
) {
534 s
->cr
[VGA_CRTC_OVERFLOW
] = (s
->cr
[VGA_CRTC_OVERFLOW
] & ~0x10) |
536 vbe_update_vgaregs(s
);
540 s
->cr
[s
->cr_index
] = val
;
541 vbe_update_vgaregs(s
);
543 switch(s
->cr_index
) {
544 case VGA_CRTC_H_TOTAL
:
545 case VGA_CRTC_H_SYNC_START
:
546 case VGA_CRTC_H_SYNC_END
:
547 case VGA_CRTC_V_TOTAL
:
548 case VGA_CRTC_OVERFLOW
:
549 case VGA_CRTC_V_SYNC_END
:
551 s
->update_retrace_info(s
);
563 * Sanity check vbe register writes.
565 * As we don't have a way to signal errors to the guest in the bochs
566 * dispi interface we'll go adjust the registers to the closest valid
569 static void vbe_fixup_regs(VGACommonState
*s
)
571 uint16_t *r
= s
->vbe_regs
;
572 uint32_t bits
, linelength
, maxy
, offset
;
574 if (!vbe_enabled(s
)) {
575 /* vbe is turned off -- nothing to do */
580 switch (r
[VBE_DISPI_INDEX_BPP
]) {
586 bits
= r
[VBE_DISPI_INDEX_BPP
];
592 bits
= r
[VBE_DISPI_INDEX_BPP
] = 8;
597 r
[VBE_DISPI_INDEX_XRES
] &= ~7u;
598 if (r
[VBE_DISPI_INDEX_XRES
] == 0) {
599 r
[VBE_DISPI_INDEX_XRES
] = 8;
601 if (r
[VBE_DISPI_INDEX_XRES
] > VBE_DISPI_MAX_XRES
) {
602 r
[VBE_DISPI_INDEX_XRES
] = VBE_DISPI_MAX_XRES
;
604 r
[VBE_DISPI_INDEX_VIRT_WIDTH
] &= ~7u;
605 if (r
[VBE_DISPI_INDEX_VIRT_WIDTH
] > VBE_DISPI_MAX_XRES
) {
606 r
[VBE_DISPI_INDEX_VIRT_WIDTH
] = VBE_DISPI_MAX_XRES
;
608 if (r
[VBE_DISPI_INDEX_VIRT_WIDTH
] < r
[VBE_DISPI_INDEX_XRES
]) {
609 r
[VBE_DISPI_INDEX_VIRT_WIDTH
] = r
[VBE_DISPI_INDEX_XRES
];
613 linelength
= r
[VBE_DISPI_INDEX_VIRT_WIDTH
] * bits
/ 8;
614 maxy
= s
->vbe_size
/ linelength
;
615 if (r
[VBE_DISPI_INDEX_YRES
] == 0) {
616 r
[VBE_DISPI_INDEX_YRES
] = 1;
618 if (r
[VBE_DISPI_INDEX_YRES
] > VBE_DISPI_MAX_YRES
) {
619 r
[VBE_DISPI_INDEX_YRES
] = VBE_DISPI_MAX_YRES
;
621 if (r
[VBE_DISPI_INDEX_YRES
] > maxy
) {
622 r
[VBE_DISPI_INDEX_YRES
] = maxy
;
626 if (r
[VBE_DISPI_INDEX_X_OFFSET
] > VBE_DISPI_MAX_XRES
) {
627 r
[VBE_DISPI_INDEX_X_OFFSET
] = VBE_DISPI_MAX_XRES
;
629 if (r
[VBE_DISPI_INDEX_Y_OFFSET
] > VBE_DISPI_MAX_YRES
) {
630 r
[VBE_DISPI_INDEX_Y_OFFSET
] = VBE_DISPI_MAX_YRES
;
632 offset
= r
[VBE_DISPI_INDEX_X_OFFSET
] * bits
/ 8;
633 offset
+= r
[VBE_DISPI_INDEX_Y_OFFSET
] * linelength
;
634 if (offset
+ r
[VBE_DISPI_INDEX_YRES
] * linelength
> s
->vbe_size
) {
635 r
[VBE_DISPI_INDEX_Y_OFFSET
] = 0;
636 offset
= r
[VBE_DISPI_INDEX_X_OFFSET
] * bits
/ 8;
637 if (offset
+ r
[VBE_DISPI_INDEX_YRES
] * linelength
> s
->vbe_size
) {
638 r
[VBE_DISPI_INDEX_X_OFFSET
] = 0;
643 /* update vga state */
644 r
[VBE_DISPI_INDEX_VIRT_HEIGHT
] = maxy
;
645 s
->vbe_line_offset
= linelength
;
646 s
->vbe_start_addr
= offset
/ 4;
649 /* we initialize the VGA graphic mode */
650 static void vbe_update_vgaregs(VGACommonState
*s
)
652 int h
, shift_control
;
654 if (!vbe_enabled(s
)) {
655 /* vbe is turned off -- nothing to do */
659 /* graphic mode + memory map 1 */
660 s
->gr
[VGA_GFX_MISC
] = (s
->gr
[VGA_GFX_MISC
] & ~0x0c) | 0x04 |
661 VGA_GR06_GRAPHICS_MODE
;
662 s
->cr
[VGA_CRTC_MODE
] |= 3; /* no CGA modes */
663 s
->cr
[VGA_CRTC_OFFSET
] = s
->vbe_line_offset
>> 3;
665 s
->cr
[VGA_CRTC_H_DISP
] =
666 (s
->vbe_regs
[VBE_DISPI_INDEX_XRES
] >> 3) - 1;
667 /* height (only meaningful if < 1024) */
668 h
= s
->vbe_regs
[VBE_DISPI_INDEX_YRES
] - 1;
669 s
->cr
[VGA_CRTC_V_DISP_END
] = h
;
670 s
->cr
[VGA_CRTC_OVERFLOW
] = (s
->cr
[VGA_CRTC_OVERFLOW
] & ~0x42) |
671 ((h
>> 7) & 0x02) | ((h
>> 3) & 0x40);
672 /* line compare to 1023 */
673 s
->cr
[VGA_CRTC_LINE_COMPARE
] = 0xff;
674 s
->cr
[VGA_CRTC_OVERFLOW
] |= 0x10;
675 s
->cr
[VGA_CRTC_MAX_SCAN
] |= 0x40;
677 if (s
->vbe_regs
[VBE_DISPI_INDEX_BPP
] == 4) {
679 s
->sr_vbe
[VGA_SEQ_CLOCK_MODE
] &= ~8; /* no double line */
682 /* set chain 4 mode */
683 s
->sr_vbe
[VGA_SEQ_MEMORY_MODE
] |= VGA_SR04_CHN_4M
;
684 /* activate all planes */
685 s
->sr_vbe
[VGA_SEQ_PLANE_WRITE
] |= VGA_SR02_ALL_PLANES
;
687 s
->gr
[VGA_GFX_MODE
] = (s
->gr
[VGA_GFX_MODE
] & ~0x60) |
688 (shift_control
<< 5);
689 s
->cr
[VGA_CRTC_MAX_SCAN
] &= ~0x9f; /* no double scan */
692 static uint32_t vbe_ioport_read_index(void *opaque
, uint32_t addr
)
694 VGACommonState
*s
= opaque
;
698 uint32_t vbe_ioport_read_data(void *opaque
, uint32_t addr
)
700 VGACommonState
*s
= opaque
;
703 if (s
->vbe_index
< VBE_DISPI_INDEX_NB
) {
704 if (s
->vbe_regs
[VBE_DISPI_INDEX_ENABLE
] & VBE_DISPI_GETCAPS
) {
705 switch(s
->vbe_index
) {
706 /* XXX: do not hardcode ? */
707 case VBE_DISPI_INDEX_XRES
:
708 val
= VBE_DISPI_MAX_XRES
;
710 case VBE_DISPI_INDEX_YRES
:
711 val
= VBE_DISPI_MAX_YRES
;
713 case VBE_DISPI_INDEX_BPP
:
714 val
= VBE_DISPI_MAX_BPP
;
717 val
= s
->vbe_regs
[s
->vbe_index
];
721 val
= s
->vbe_regs
[s
->vbe_index
];
723 } else if (s
->vbe_index
== VBE_DISPI_INDEX_VIDEO_MEMORY_64K
) {
724 val
= s
->vbe_size
/ (64 * 1024);
728 trace_vga_vbe_read(s
->vbe_index
, val
);
732 void vbe_ioport_write_index(void *opaque
, uint32_t addr
, uint32_t val
)
734 VGACommonState
*s
= opaque
;
738 void vbe_ioport_write_data(void *opaque
, uint32_t addr
, uint32_t val
)
740 VGACommonState
*s
= opaque
;
742 if (s
->vbe_index
<= VBE_DISPI_INDEX_NB
) {
743 trace_vga_vbe_write(s
->vbe_index
, val
);
744 switch(s
->vbe_index
) {
745 case VBE_DISPI_INDEX_ID
:
746 if (val
== VBE_DISPI_ID0
||
747 val
== VBE_DISPI_ID1
||
748 val
== VBE_DISPI_ID2
||
749 val
== VBE_DISPI_ID3
||
750 val
== VBE_DISPI_ID4
) {
751 s
->vbe_regs
[s
->vbe_index
] = val
;
754 case VBE_DISPI_INDEX_XRES
:
755 case VBE_DISPI_INDEX_YRES
:
756 case VBE_DISPI_INDEX_BPP
:
757 case VBE_DISPI_INDEX_VIRT_WIDTH
:
758 case VBE_DISPI_INDEX_X_OFFSET
:
759 case VBE_DISPI_INDEX_Y_OFFSET
:
760 s
->vbe_regs
[s
->vbe_index
] = val
;
762 vbe_update_vgaregs(s
);
764 case VBE_DISPI_INDEX_BANK
:
765 val
&= s
->vbe_bank_mask
;
766 s
->vbe_regs
[s
->vbe_index
] = val
;
767 s
->bank_offset
= (val
<< 16);
768 vga_update_memory_access(s
);
770 case VBE_DISPI_INDEX_ENABLE
:
771 if ((val
& VBE_DISPI_ENABLED
) &&
772 !(s
->vbe_regs
[VBE_DISPI_INDEX_ENABLE
] & VBE_DISPI_ENABLED
)) {
774 s
->vbe_regs
[VBE_DISPI_INDEX_VIRT_WIDTH
] = 0;
775 s
->vbe_regs
[VBE_DISPI_INDEX_X_OFFSET
] = 0;
776 s
->vbe_regs
[VBE_DISPI_INDEX_Y_OFFSET
] = 0;
777 s
->vbe_regs
[VBE_DISPI_INDEX_ENABLE
] |= VBE_DISPI_ENABLED
;
779 vbe_update_vgaregs(s
);
781 /* clear the screen */
782 if (!(val
& VBE_DISPI_NOCLEARMEM
)) {
783 memset(s
->vram_ptr
, 0,
784 s
->vbe_regs
[VBE_DISPI_INDEX_YRES
] * s
->vbe_line_offset
);
789 s
->dac_8bit
= (val
& VBE_DISPI_8BIT_DAC
) > 0;
790 s
->vbe_regs
[s
->vbe_index
] = val
;
791 vga_update_memory_access(s
);
799 /* called for accesses between 0xa0000 and 0xc0000 */
800 uint32_t vga_mem_readb(VGACommonState
*s
, hwaddr addr
)
802 int memory_map_mode
, plane
;
805 /* convert to VGA memory offset */
806 memory_map_mode
= (s
->gr
[VGA_GFX_MISC
] >> 2) & 3;
808 switch(memory_map_mode
) {
814 addr
+= s
->bank_offset
;
829 if (sr(s
, VGA_SEQ_MEMORY_MODE
) & VGA_SR04_CHN_4M
) {
830 /* chain 4 mode : simplest access */
831 assert(addr
< s
->vram_size
);
832 ret
= s
->vram_ptr
[addr
];
833 } else if (s
->gr
[VGA_GFX_MODE
] & 0x10) {
834 /* odd/even mode (aka text mode mapping) */
835 plane
= (s
->gr
[VGA_GFX_PLANE_READ
] & 2) | (addr
& 1);
836 addr
= ((addr
& ~1) << 1) | plane
;
837 if (addr
>= s
->vram_size
) {
840 ret
= s
->vram_ptr
[addr
];
842 /* standard VGA latched access */
843 if (addr
* sizeof(uint32_t) >= s
->vram_size
) {
846 s
->latch
= ((uint32_t *)s
->vram_ptr
)[addr
];
848 if (!(s
->gr
[VGA_GFX_MODE
] & 0x08)) {
850 plane
= s
->gr
[VGA_GFX_PLANE_READ
];
851 ret
= GET_PLANE(s
->latch
, plane
);
854 ret
= (s
->latch
^ mask16
[s
->gr
[VGA_GFX_COMPARE_VALUE
]]) &
855 mask16
[s
->gr
[VGA_GFX_COMPARE_MASK
]];
864 /* called for accesses between 0xa0000 and 0xc0000 */
865 void vga_mem_writeb(VGACommonState
*s
, hwaddr addr
, uint32_t val
)
867 int memory_map_mode
, plane
, write_mode
, b
, func_select
, mask
;
868 uint32_t write_mask
, bit_mask
, set_mask
;
871 printf("vga: [0x" TARGET_FMT_plx
"] = 0x%02x\n", addr
, val
);
873 /* convert to VGA memory offset */
874 memory_map_mode
= (s
->gr
[VGA_GFX_MISC
] >> 2) & 3;
876 switch(memory_map_mode
) {
882 addr
+= s
->bank_offset
;
897 if (sr(s
, VGA_SEQ_MEMORY_MODE
) & VGA_SR04_CHN_4M
) {
898 /* chain 4 mode : simplest access */
901 if (sr(s
, VGA_SEQ_PLANE_WRITE
) & mask
) {
902 assert(addr
< s
->vram_size
);
903 s
->vram_ptr
[addr
] = val
;
905 printf("vga: chain4: [0x" TARGET_FMT_plx
"]\n", addr
);
907 s
->plane_updated
|= mask
; /* only used to detect font change */
908 memory_region_set_dirty(&s
->vram
, addr
, 1);
910 } else if (s
->gr
[VGA_GFX_MODE
] & 0x10) {
911 /* odd/even mode (aka text mode mapping) */
912 plane
= (s
->gr
[VGA_GFX_PLANE_READ
] & 2) | (addr
& 1);
914 if (sr(s
, VGA_SEQ_PLANE_WRITE
) & mask
) {
915 addr
= ((addr
& ~1) << 1) | plane
;
916 if (addr
>= s
->vram_size
) {
919 s
->vram_ptr
[addr
] = val
;
921 printf("vga: odd/even: [0x" TARGET_FMT_plx
"]\n", addr
);
923 s
->plane_updated
|= mask
; /* only used to detect font change */
924 memory_region_set_dirty(&s
->vram
, addr
, 1);
927 /* standard VGA latched access */
928 write_mode
= s
->gr
[VGA_GFX_MODE
] & 3;
933 b
= s
->gr
[VGA_GFX_DATA_ROTATE
] & 7;
934 val
= ((val
>> b
) | (val
<< (8 - b
))) & 0xff;
938 /* apply set/reset mask */
939 set_mask
= mask16
[s
->gr
[VGA_GFX_SR_ENABLE
]];
940 val
= (val
& ~set_mask
) |
941 (mask16
[s
->gr
[VGA_GFX_SR_VALUE
]] & set_mask
);
942 bit_mask
= s
->gr
[VGA_GFX_BIT_MASK
];
948 val
= mask16
[val
& 0x0f];
949 bit_mask
= s
->gr
[VGA_GFX_BIT_MASK
];
953 b
= s
->gr
[VGA_GFX_DATA_ROTATE
] & 7;
954 val
= (val
>> b
) | (val
<< (8 - b
));
956 bit_mask
= s
->gr
[VGA_GFX_BIT_MASK
] & val
;
957 val
= mask16
[s
->gr
[VGA_GFX_SR_VALUE
]];
961 /* apply logical operation */
962 func_select
= s
->gr
[VGA_GFX_DATA_ROTATE
] >> 3;
963 switch(func_select
) {
983 bit_mask
|= bit_mask
<< 8;
984 bit_mask
|= bit_mask
<< 16;
985 val
= (val
& bit_mask
) | (s
->latch
& ~bit_mask
);
988 /* mask data according to sr[2] */
989 mask
= sr(s
, VGA_SEQ_PLANE_WRITE
);
990 s
->plane_updated
|= mask
; /* only used to detect font change */
991 write_mask
= mask16
[mask
];
992 if (addr
* sizeof(uint32_t) >= s
->vram_size
) {
995 ((uint32_t *)s
->vram_ptr
)[addr
] =
996 (((uint32_t *)s
->vram_ptr
)[addr
] & ~write_mask
) |
999 printf("vga: latch: [0x" TARGET_FMT_plx
"] mask=0x%08x val=0x%08x\n",
1000 addr
* 4, write_mask
, val
);
1002 memory_region_set_dirty(&s
->vram
, addr
<< 2, sizeof(uint32_t));
1006 typedef void vga_draw_line_func(VGACommonState
*s1
, uint8_t *d
,
1007 uint32_t srcaddr
, int width
);
1009 #include "vga-helpers.h"
1011 /* return true if the palette was modified */
1012 static int update_palette16(VGACommonState
*s
)
1015 uint32_t v
, col
, *palette
;
1018 palette
= s
->last_palette
;
1019 for(i
= 0; i
< 16; i
++) {
1021 if (s
->ar
[VGA_ATC_MODE
] & 0x80) {
1022 v
= ((s
->ar
[VGA_ATC_COLOR_PAGE
] & 0xf) << 4) | (v
& 0xf);
1024 v
= ((s
->ar
[VGA_ATC_COLOR_PAGE
] & 0xc) << 4) | (v
& 0x3f);
1027 col
= rgb_to_pixel32(c6_to_8(s
->palette
[v
]),
1028 c6_to_8(s
->palette
[v
+ 1]),
1029 c6_to_8(s
->palette
[v
+ 2]));
1030 if (col
!= palette
[i
]) {
1038 /* return true if the palette was modified */
1039 static int update_palette256(VGACommonState
*s
)
1042 uint32_t v
, col
, *palette
;
1045 palette
= s
->last_palette
;
1047 for(i
= 0; i
< 256; i
++) {
1049 col
= rgb_to_pixel32(s
->palette
[v
],
1053 col
= rgb_to_pixel32(c6_to_8(s
->palette
[v
]),
1054 c6_to_8(s
->palette
[v
+ 1]),
1055 c6_to_8(s
->palette
[v
+ 2]));
1057 if (col
!= palette
[i
]) {
1066 static void vga_get_offsets(VGACommonState
*s
,
1067 uint32_t *pline_offset
,
1068 uint32_t *pstart_addr
,
1069 uint32_t *pline_compare
)
1071 uint32_t start_addr
, line_offset
, line_compare
;
1073 if (vbe_enabled(s
)) {
1074 line_offset
= s
->vbe_line_offset
;
1075 start_addr
= s
->vbe_start_addr
;
1076 line_compare
= 65535;
1078 /* compute line_offset in bytes */
1079 line_offset
= s
->cr
[VGA_CRTC_OFFSET
];
1082 /* starting address */
1083 start_addr
= s
->cr
[VGA_CRTC_START_LO
] |
1084 (s
->cr
[VGA_CRTC_START_HI
] << 8);
1087 line_compare
= s
->cr
[VGA_CRTC_LINE_COMPARE
] |
1088 ((s
->cr
[VGA_CRTC_OVERFLOW
] & 0x10) << 4) |
1089 ((s
->cr
[VGA_CRTC_MAX_SCAN
] & 0x40) << 3);
1091 *pline_offset
= line_offset
;
1092 *pstart_addr
= start_addr
;
1093 *pline_compare
= line_compare
;
1096 /* update start_addr and line_offset. Return TRUE if modified */
1097 static int update_basic_params(VGACommonState
*s
)
1100 uint32_t start_addr
, line_offset
, line_compare
;
1104 s
->get_offsets(s
, &line_offset
, &start_addr
, &line_compare
);
1106 if (line_offset
!= s
->line_offset
||
1107 start_addr
!= s
->start_addr
||
1108 line_compare
!= s
->line_compare
) {
1109 s
->line_offset
= line_offset
;
1110 s
->start_addr
= start_addr
;
1111 s
->line_compare
= line_compare
;
1118 static const uint8_t cursor_glyph
[32 * 4] = {
1119 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1120 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1121 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1122 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1123 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1124 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1125 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1126 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1127 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1128 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1129 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1130 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1131 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1132 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1133 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1134 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
1137 static void vga_get_text_resolution(VGACommonState
*s
, int *pwidth
, int *pheight
,
1138 int *pcwidth
, int *pcheight
)
1140 int width
, cwidth
, height
, cheight
;
1142 /* total width & height */
1143 cheight
= (s
->cr
[VGA_CRTC_MAX_SCAN
] & 0x1f) + 1;
1145 if (!(sr(s
, VGA_SEQ_CLOCK_MODE
) & VGA_SR01_CHAR_CLK_8DOTS
)) {
1148 if (sr(s
, VGA_SEQ_CLOCK_MODE
) & 0x08) {
1149 cwidth
= 16; /* NOTE: no 18 pixel wide */
1151 width
= (s
->cr
[VGA_CRTC_H_DISP
] + 1);
1152 if (s
->cr
[VGA_CRTC_V_TOTAL
] == 100) {
1153 /* ugly hack for CGA 160x100x16 - explain me the logic */
1156 height
= s
->cr
[VGA_CRTC_V_DISP_END
] |
1157 ((s
->cr
[VGA_CRTC_OVERFLOW
] & 0x02) << 7) |
1158 ((s
->cr
[VGA_CRTC_OVERFLOW
] & 0x40) << 3);
1159 height
= (height
+ 1) / cheight
;
1165 *pcheight
= cheight
;
1176 static void vga_draw_text(VGACommonState
*s
, int full_update
)
1178 DisplaySurface
*surface
= qemu_console_surface(s
->con
);
1179 int cx
, cy
, cheight
, cw
, ch
, cattr
, height
, width
, ch_attr
;
1180 int cx_min
, cx_max
, linesize
, x_incr
, line
, line1
;
1181 uint32_t offset
, fgcol
, bgcol
, v
, cursor_offset
;
1182 uint8_t *d1
, *d
, *src
, *dest
, *cursor_ptr
;
1183 const uint8_t *font_ptr
, *font_base
[2];
1184 int dup9
, line_offset
;
1186 uint32_t *ch_attr_ptr
;
1187 int64_t now
= qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL
);
1189 /* compute font data address (in plane 2) */
1190 v
= sr(s
, VGA_SEQ_CHARACTER_MAP
);
1191 offset
= (((v
>> 4) & 1) | ((v
<< 1) & 6)) * 8192 * 4 + 2;
1192 if (offset
!= s
->font_offsets
[0]) {
1193 s
->font_offsets
[0] = offset
;
1196 font_base
[0] = s
->vram_ptr
+ offset
;
1198 offset
= (((v
>> 5) & 1) | ((v
>> 1) & 6)) * 8192 * 4 + 2;
1199 font_base
[1] = s
->vram_ptr
+ offset
;
1200 if (offset
!= s
->font_offsets
[1]) {
1201 s
->font_offsets
[1] = offset
;
1204 if (s
->plane_updated
& (1 << 2) || s
->has_chain4_alias
) {
1205 /* if the plane 2 was modified since the last display, it
1206 indicates the font may have been modified */
1207 s
->plane_updated
= 0;
1210 full_update
|= update_basic_params(s
);
1212 line_offset
= s
->line_offset
;
1214 vga_get_text_resolution(s
, &width
, &height
, &cw
, &cheight
);
1215 if ((height
* width
) <= 1) {
1216 /* better than nothing: exit if transient size is too small */
1219 if ((height
* width
) > CH_ATTR_SIZE
) {
1220 /* better than nothing: exit if transient size is too big */
1224 if (width
!= s
->last_width
|| height
!= s
->last_height
||
1225 cw
!= s
->last_cw
|| cheight
!= s
->last_ch
|| s
->last_depth
) {
1226 s
->last_scr_width
= width
* cw
;
1227 s
->last_scr_height
= height
* cheight
;
1228 qemu_console_resize(s
->con
, s
->last_scr_width
, s
->last_scr_height
);
1229 surface
= qemu_console_surface(s
->con
);
1230 dpy_text_resize(s
->con
, width
, height
);
1232 s
->last_width
= width
;
1233 s
->last_height
= height
;
1234 s
->last_ch
= cheight
;
1238 full_update
|= update_palette16(s
);
1239 palette
= s
->last_palette
;
1240 x_incr
= cw
* surface_bytes_per_pixel(surface
);
1243 s
->full_update_text
= 1;
1245 if (s
->full_update_gfx
) {
1246 s
->full_update_gfx
= 0;
1250 cursor_offset
= ((s
->cr
[VGA_CRTC_CURSOR_HI
] << 8) |
1251 s
->cr
[VGA_CRTC_CURSOR_LO
]) - s
->start_addr
;
1252 if (cursor_offset
!= s
->cursor_offset
||
1253 s
->cr
[VGA_CRTC_CURSOR_START
] != s
->cursor_start
||
1254 s
->cr
[VGA_CRTC_CURSOR_END
] != s
->cursor_end
) {
1255 /* if the cursor position changed, we update the old and new
1257 if (s
->cursor_offset
< CH_ATTR_SIZE
)
1258 s
->last_ch_attr
[s
->cursor_offset
] = -1;
1259 if (cursor_offset
< CH_ATTR_SIZE
)
1260 s
->last_ch_attr
[cursor_offset
] = -1;
1261 s
->cursor_offset
= cursor_offset
;
1262 s
->cursor_start
= s
->cr
[VGA_CRTC_CURSOR_START
];
1263 s
->cursor_end
= s
->cr
[VGA_CRTC_CURSOR_END
];
1265 cursor_ptr
= s
->vram_ptr
+ (s
->start_addr
+ cursor_offset
) * 4;
1266 if (now
>= s
->cursor_blink_time
) {
1267 s
->cursor_blink_time
= now
+ VGA_TEXT_CURSOR_PERIOD_MS
/ 2;
1268 s
->cursor_visible_phase
= !s
->cursor_visible_phase
;
1271 dest
= surface_data(surface
);
1272 linesize
= surface_stride(surface
);
1273 ch_attr_ptr
= s
->last_ch_attr
;
1275 offset
= s
->start_addr
* 4;
1276 for(cy
= 0; cy
< height
; cy
++) {
1278 src
= s
->vram_ptr
+ offset
;
1281 for(cx
= 0; cx
< width
; cx
++) {
1282 if (src
+ sizeof(uint16_t) > s
->vram_ptr
+ s
->vram_size
) {
1285 ch_attr
= *(uint16_t *)src
;
1286 if (full_update
|| ch_attr
!= *ch_attr_ptr
|| src
== cursor_ptr
) {
1291 *ch_attr_ptr
= ch_attr
;
1292 #ifdef HOST_WORDS_BIGENDIAN
1294 cattr
= ch_attr
& 0xff;
1296 ch
= ch_attr
& 0xff;
1297 cattr
= ch_attr
>> 8;
1299 font_ptr
= font_base
[(cattr
>> 3) & 1];
1300 font_ptr
+= 32 * 4 * ch
;
1301 bgcol
= palette
[cattr
>> 4];
1302 fgcol
= palette
[cattr
& 0x0f];
1304 vga_draw_glyph16(d1
, linesize
,
1305 font_ptr
, cheight
, fgcol
, bgcol
);
1306 } else if (cw
!= 9) {
1307 vga_draw_glyph8(d1
, linesize
,
1308 font_ptr
, cheight
, fgcol
, bgcol
);
1311 if (ch
>= 0xb0 && ch
<= 0xdf &&
1312 (s
->ar
[VGA_ATC_MODE
] & 0x04)) {
1315 vga_draw_glyph9(d1
, linesize
,
1316 font_ptr
, cheight
, fgcol
, bgcol
, dup9
);
1318 if (src
== cursor_ptr
&&
1319 !(s
->cr
[VGA_CRTC_CURSOR_START
] & 0x20) &&
1320 s
->cursor_visible_phase
) {
1321 int line_start
, line_last
, h
;
1322 /* draw the cursor */
1323 line_start
= s
->cr
[VGA_CRTC_CURSOR_START
] & 0x1f;
1324 line_last
= s
->cr
[VGA_CRTC_CURSOR_END
] & 0x1f;
1325 /* XXX: check that */
1326 if (line_last
> cheight
- 1)
1327 line_last
= cheight
- 1;
1328 if (line_last
>= line_start
&& line_start
< cheight
) {
1329 h
= line_last
- line_start
+ 1;
1330 d
= d1
+ linesize
* line_start
;
1332 vga_draw_glyph16(d
, linesize
,
1333 cursor_glyph
, h
, fgcol
, bgcol
);
1334 } else if (cw
!= 9) {
1335 vga_draw_glyph8(d
, linesize
,
1336 cursor_glyph
, h
, fgcol
, bgcol
);
1338 vga_draw_glyph9(d
, linesize
,
1339 cursor_glyph
, h
, fgcol
, bgcol
, 1);
1349 dpy_gfx_update(s
->con
, cx_min
* cw
, cy
* cheight
,
1350 (cx_max
- cx_min
+ 1) * cw
, cheight
);
1352 dest
+= linesize
* cheight
;
1353 line1
= line
+ cheight
;
1354 offset
+= line_offset
;
1355 if (line
< s
->line_compare
&& line1
>= s
->line_compare
) {
1380 static vga_draw_line_func
* const vga_draw_line_table
[VGA_DRAW_LINE_NB
] = {
1397 static int vga_get_bpp(VGACommonState
*s
)
1401 if (vbe_enabled(s
)) {
1402 ret
= s
->vbe_regs
[VBE_DISPI_INDEX_BPP
];
1409 static void vga_get_resolution(VGACommonState
*s
, int *pwidth
, int *pheight
)
1413 if (vbe_enabled(s
)) {
1414 width
= s
->vbe_regs
[VBE_DISPI_INDEX_XRES
];
1415 height
= s
->vbe_regs
[VBE_DISPI_INDEX_YRES
];
1417 width
= (s
->cr
[VGA_CRTC_H_DISP
] + 1) * 8;
1418 height
= s
->cr
[VGA_CRTC_V_DISP_END
] |
1419 ((s
->cr
[VGA_CRTC_OVERFLOW
] & 0x02) << 7) |
1420 ((s
->cr
[VGA_CRTC_OVERFLOW
] & 0x40) << 3);
1421 height
= (height
+ 1);
1427 void vga_invalidate_scanlines(VGACommonState
*s
, int y1
, int y2
)
1430 if (y1
>= VGA_MAX_HEIGHT
)
1432 if (y2
>= VGA_MAX_HEIGHT
)
1433 y2
= VGA_MAX_HEIGHT
;
1434 for(y
= y1
; y
< y2
; y
++) {
1435 s
->invalidated_y_table
[y
>> 5] |= 1 << (y
& 0x1f);
1439 static bool vga_scanline_invalidated(VGACommonState
*s
, int y
)
1441 if (y
>= VGA_MAX_HEIGHT
) {
1444 return s
->invalidated_y_table
[y
>> 5] & (1 << (y
& 0x1f));
1447 void vga_dirty_log_start(VGACommonState
*s
)
1449 memory_region_set_log(&s
->vram
, true, DIRTY_MEMORY_VGA
);
1452 void vga_dirty_log_stop(VGACommonState
*s
)
1454 memory_region_set_log(&s
->vram
, false, DIRTY_MEMORY_VGA
);
1460 static void vga_draw_graphic(VGACommonState
*s
, int full_update
)
1462 DisplaySurface
*surface
= qemu_console_surface(s
->con
);
1463 int y1
, y
, update
, linesize
, y_start
, double_scan
, mask
, depth
;
1464 int width
, height
, shift_control
, bwidth
, bits
;
1465 ram_addr_t page0
, page1
, region_start
, region_end
;
1466 DirtyBitmapSnapshot
*snap
= NULL
;
1467 int disp_width
, multi_scan
, multi_run
;
1469 uint32_t v
, addr1
, addr
;
1470 vga_draw_line_func
*vga_draw_line
= NULL
;
1471 bool share_surface
, force_shadow
= false;
1472 pixman_format_code_t format
;
1473 #ifdef HOST_WORDS_BIGENDIAN
1474 bool byteswap
= !s
->big_endian_fb
;
1476 bool byteswap
= s
->big_endian_fb
;
1479 full_update
|= update_basic_params(s
);
1481 s
->get_resolution(s
, &width
, &height
);
1484 region_start
= (s
->start_addr
* 4);
1485 region_end
= region_start
+ (ram_addr_t
)s
->line_offset
* height
;
1486 if (region_end
> s
->vbe_size
) {
1487 /* wraps around (can happen with cirrus vbe modes) */
1489 region_end
= s
->vbe_size
;
1490 force_shadow
= true;
1493 shift_control
= (s
->gr
[VGA_GFX_MODE
] >> 5) & 3;
1494 double_scan
= (s
->cr
[VGA_CRTC_MAX_SCAN
] >> 7);
1495 if (shift_control
!= 1) {
1496 multi_scan
= (((s
->cr
[VGA_CRTC_MAX_SCAN
] & 0x1f) + 1) << double_scan
)
1499 /* in CGA modes, multi_scan is ignored */
1500 /* XXX: is it correct ? */
1501 multi_scan
= double_scan
;
1503 multi_run
= multi_scan
;
1504 if (shift_control
!= s
->shift_control
||
1505 double_scan
!= s
->double_scan
) {
1507 s
->shift_control
= shift_control
;
1508 s
->double_scan
= double_scan
;
1511 if (shift_control
== 0) {
1512 if (sr(s
, VGA_SEQ_CLOCK_MODE
) & 8) {
1515 } else if (shift_control
== 1) {
1516 if (sr(s
, VGA_SEQ_CLOCK_MODE
) & 8) {
1521 depth
= s
->get_bpp(s
);
1524 * Check whether we can share the surface with the backend
1525 * or whether we need a shadow surface. We share native
1526 * endian surfaces for 15bpp and above and byteswapped
1527 * surfaces for 24bpp and above.
1529 format
= qemu_default_pixman_format(depth
, !byteswap
);
1531 share_surface
= dpy_gfx_check_format(s
->con
, format
)
1532 && !s
->force_shadow
&& !force_shadow
;
1534 share_surface
= false;
1536 if (s
->line_offset
!= s
->last_line_offset
||
1537 disp_width
!= s
->last_width
||
1538 height
!= s
->last_height
||
1539 s
->last_depth
!= depth
||
1540 s
->last_byteswap
!= byteswap
||
1541 share_surface
!= is_buffer_shared(surface
)) {
1542 if (share_surface
) {
1543 surface
= qemu_create_displaysurface_from(disp_width
,
1544 height
, format
, s
->line_offset
,
1545 s
->vram_ptr
+ (s
->start_addr
* 4));
1546 dpy_gfx_replace_surface(s
->con
, surface
);
1548 qemu_console_resize(s
->con
, disp_width
, height
);
1549 surface
= qemu_console_surface(s
->con
);
1551 s
->last_scr_width
= disp_width
;
1552 s
->last_scr_height
= height
;
1553 s
->last_width
= disp_width
;
1554 s
->last_height
= height
;
1555 s
->last_line_offset
= s
->line_offset
;
1556 s
->last_depth
= depth
;
1557 s
->last_byteswap
= byteswap
;
1559 } else if (is_buffer_shared(surface
) &&
1560 (full_update
|| surface_data(surface
) != s
->vram_ptr
1561 + (s
->start_addr
* 4))) {
1562 pixman_format_code_t format
=
1563 qemu_default_pixman_format(depth
, !byteswap
);
1564 surface
= qemu_create_displaysurface_from(disp_width
,
1565 height
, format
, s
->line_offset
,
1566 s
->vram_ptr
+ (s
->start_addr
* 4));
1567 dpy_gfx_replace_surface(s
->con
, surface
);
1570 if (shift_control
== 0) {
1571 full_update
|= update_palette16(s
);
1572 if (sr(s
, VGA_SEQ_CLOCK_MODE
) & 8) {
1573 v
= VGA_DRAW_LINE4D2
;
1578 } else if (shift_control
== 1) {
1579 full_update
|= update_palette16(s
);
1580 if (sr(s
, VGA_SEQ_CLOCK_MODE
) & 8) {
1581 v
= VGA_DRAW_LINE2D2
;
1587 switch(s
->get_bpp(s
)) {
1590 full_update
|= update_palette256(s
);
1591 v
= VGA_DRAW_LINE8D2
;
1595 full_update
|= update_palette256(s
);
1600 v
= s
->big_endian_fb
? VGA_DRAW_LINE15_BE
: VGA_DRAW_LINE15_LE
;
1604 v
= s
->big_endian_fb
? VGA_DRAW_LINE16_BE
: VGA_DRAW_LINE16_LE
;
1608 v
= s
->big_endian_fb
? VGA_DRAW_LINE24_BE
: VGA_DRAW_LINE24_LE
;
1612 v
= s
->big_endian_fb
? VGA_DRAW_LINE32_BE
: VGA_DRAW_LINE32_LE
;
1617 vga_draw_line
= vga_draw_line_table
[v
];
1619 if (!is_buffer_shared(surface
) && s
->cursor_invalidate
) {
1620 s
->cursor_invalidate(s
);
1624 printf("w=%d h=%d v=%d line_offset=%d cr[0x09]=0x%02x cr[0x17]=0x%02x linecmp=%d sr[0x01]=0x%02x\n",
1625 width
, height
, v
, line_offset
, s
->cr
[9], s
->cr
[VGA_CRTC_MODE
],
1626 s
->line_compare
, sr(s
, VGA_SEQ_CLOCK_MODE
));
1628 addr1
= (s
->start_addr
* 4);
1629 bwidth
= DIV_ROUND_UP(width
* bits
, 8);
1631 d
= surface_data(surface
);
1632 linesize
= surface_stride(surface
);
1636 if (s
->line_compare
< height
) {
1637 /* split screen mode */
1640 snap
= memory_region_snapshot_and_clear_dirty(&s
->vram
, region_start
,
1641 region_end
- region_start
,
1645 for(y
= 0; y
< height
; y
++) {
1647 if (!(s
->cr
[VGA_CRTC_MODE
] & 1)) {
1649 /* CGA compatibility handling */
1650 shift
= 14 + ((s
->cr
[VGA_CRTC_MODE
] >> 6) & 1);
1651 addr
= (addr
& ~(1 << shift
)) | ((y1
& 1) << shift
);
1653 if (!(s
->cr
[VGA_CRTC_MODE
] & 2)) {
1654 addr
= (addr
& ~0x8000) | ((y1
& 2) << 14);
1656 update
= full_update
;
1657 page0
= addr
& s
->vbe_size_mask
;
1658 page1
= (addr
+ bwidth
- 1) & s
->vbe_size_mask
;
1661 } else if (page1
< page0
) {
1662 /* scanline wraps from end of video memory to the start */
1663 assert(force_shadow
);
1664 update
= memory_region_snapshot_get_dirty(&s
->vram
, snap
,
1665 page0
, s
->vbe_size
- page0
);
1666 update
|= memory_region_snapshot_get_dirty(&s
->vram
, snap
,
1669 update
= memory_region_snapshot_get_dirty(&s
->vram
, snap
,
1670 page0
, page1
- page0
);
1672 /* explicit invalidation for the hardware cursor (cirrus only) */
1673 update
|= vga_scanline_invalidated(s
, y
);
1677 if (!(is_buffer_shared(surface
))) {
1678 vga_draw_line(s
, d
, addr
, width
);
1679 if (s
->cursor_draw_line
)
1680 s
->cursor_draw_line(s
, d
, y
);
1684 /* flush to display */
1685 dpy_gfx_update(s
->con
, 0, y_start
,
1686 disp_width
, y
- y_start
);
1691 mask
= (s
->cr
[VGA_CRTC_MODE
] & 3) ^ 3;
1692 if ((y1
& mask
) == mask
)
1693 addr1
+= s
->line_offset
;
1695 multi_run
= multi_scan
;
1699 /* line compare acts on the displayed lines */
1700 if (y
== s
->line_compare
)
1705 /* flush to display */
1706 dpy_gfx_update(s
->con
, 0, y_start
,
1707 disp_width
, y
- y_start
);
1710 memset(s
->invalidated_y_table
, 0, sizeof(s
->invalidated_y_table
));
1713 static void vga_draw_blank(VGACommonState
*s
, int full_update
)
1715 DisplaySurface
*surface
= qemu_console_surface(s
->con
);
1721 if (s
->last_scr_width
<= 0 || s
->last_scr_height
<= 0)
1724 w
= s
->last_scr_width
* surface_bytes_per_pixel(surface
);
1725 d
= surface_data(surface
);
1726 for(i
= 0; i
< s
->last_scr_height
; i
++) {
1728 d
+= surface_stride(surface
);
1730 dpy_gfx_update(s
->con
, 0, 0,
1731 s
->last_scr_width
, s
->last_scr_height
);
1734 #define GMODE_TEXT 0
1735 #define GMODE_GRAPH 1
1736 #define GMODE_BLANK 2
1738 static void vga_update_display(void *opaque
)
1740 VGACommonState
*s
= opaque
;
1741 DisplaySurface
*surface
= qemu_console_surface(s
->con
);
1742 int full_update
, graphic_mode
;
1744 qemu_flush_coalesced_mmio_buffer();
1746 if (surface_bits_per_pixel(surface
) == 0) {
1750 if (!(s
->ar_index
& 0x20)) {
1751 graphic_mode
= GMODE_BLANK
;
1753 graphic_mode
= s
->gr
[VGA_GFX_MISC
] & VGA_GR06_GRAPHICS_MODE
;
1755 if (graphic_mode
!= s
->graphic_mode
) {
1756 s
->graphic_mode
= graphic_mode
;
1757 s
->cursor_blink_time
= qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL
);
1760 switch(graphic_mode
) {
1762 vga_draw_text(s
, full_update
);
1765 vga_draw_graphic(s
, full_update
);
1769 vga_draw_blank(s
, full_update
);
1775 /* force a full display refresh */
1776 static void vga_invalidate_display(void *opaque
)
1778 VGACommonState
*s
= opaque
;
1781 s
->last_height
= -1;
1784 void vga_common_reset(VGACommonState
*s
)
1787 memset(s
->sr
, '\0', sizeof(s
->sr
));
1788 memset(s
->sr_vbe
, '\0', sizeof(s
->sr_vbe
));
1790 memset(s
->gr
, '\0', sizeof(s
->gr
));
1792 memset(s
->ar
, '\0', sizeof(s
->ar
));
1793 s
->ar_flip_flop
= 0;
1795 memset(s
->cr
, '\0', sizeof(s
->cr
));
1801 s
->dac_sub_index
= 0;
1802 s
->dac_read_index
= 0;
1803 s
->dac_write_index
= 0;
1804 memset(s
->dac_cache
, '\0', sizeof(s
->dac_cache
));
1806 memset(s
->palette
, '\0', sizeof(s
->palette
));
1809 memset(s
->vbe_regs
, '\0', sizeof(s
->vbe_regs
));
1810 s
->vbe_regs
[VBE_DISPI_INDEX_ID
] = VBE_DISPI_ID5
;
1811 s
->vbe_start_addr
= 0;
1812 s
->vbe_line_offset
= 0;
1813 s
->vbe_bank_mask
= (s
->vram_size
>> 16) - 1;
1814 memset(s
->font_offsets
, '\0', sizeof(s
->font_offsets
));
1815 s
->graphic_mode
= -1; /* force full update */
1816 s
->shift_control
= 0;
1819 s
->line_compare
= 0;
1821 s
->plane_updated
= 0;
1826 s
->last_scr_width
= 0;
1827 s
->last_scr_height
= 0;
1828 s
->cursor_start
= 0;
1830 s
->cursor_offset
= 0;
1831 s
->big_endian_fb
= s
->default_endian_fb
;
1832 memset(s
->invalidated_y_table
, '\0', sizeof(s
->invalidated_y_table
));
1833 memset(s
->last_palette
, '\0', sizeof(s
->last_palette
));
1834 memset(s
->last_ch_attr
, '\0', sizeof(s
->last_ch_attr
));
1835 switch (vga_retrace_method
) {
1836 case VGA_RETRACE_DUMB
:
1838 case VGA_RETRACE_PRECISE
:
1839 memset(&s
->retrace_info
, 0, sizeof (s
->retrace_info
));
1842 vga_update_memory_access(s
);
1845 static void vga_reset(void *opaque
)
1847 VGACommonState
*s
= opaque
;
1848 vga_common_reset(s
);
1851 #define TEXTMODE_X(x) ((x) % width)
1852 #define TEXTMODE_Y(x) ((x) / width)
1853 #define VMEM2CHTYPE(v) ((v & 0xff0007ff) | \
1854 ((v & 0x00000800) << 10) | ((v & 0x00007000) >> 1))
1855 /* relay text rendering to the display driver
1856 * instead of doing a full vga_update_display() */
1857 static void vga_update_text(void *opaque
, console_ch_t
*chardata
)
1859 VGACommonState
*s
= opaque
;
1860 int graphic_mode
, i
, cursor_offset
, cursor_visible
;
1861 int cw
, cheight
, width
, height
, size
, c_min
, c_max
;
1863 console_ch_t
*dst
, val
;
1864 char msg_buffer
[80];
1865 int full_update
= 0;
1867 qemu_flush_coalesced_mmio_buffer();
1869 if (!(s
->ar_index
& 0x20)) {
1870 graphic_mode
= GMODE_BLANK
;
1872 graphic_mode
= s
->gr
[VGA_GFX_MISC
] & VGA_GR06_GRAPHICS_MODE
;
1874 if (graphic_mode
!= s
->graphic_mode
) {
1875 s
->graphic_mode
= graphic_mode
;
1878 if (s
->last_width
== -1) {
1883 switch (graphic_mode
) {
1885 /* TODO: update palette */
1886 full_update
|= update_basic_params(s
);
1888 /* total width & height */
1889 cheight
= (s
->cr
[VGA_CRTC_MAX_SCAN
] & 0x1f) + 1;
1891 if (!(sr(s
, VGA_SEQ_CLOCK_MODE
) & VGA_SR01_CHAR_CLK_8DOTS
)) {
1894 if (sr(s
, VGA_SEQ_CLOCK_MODE
) & 0x08) {
1895 cw
= 16; /* NOTE: no 18 pixel wide */
1897 width
= (s
->cr
[VGA_CRTC_H_DISP
] + 1);
1898 if (s
->cr
[VGA_CRTC_V_TOTAL
] == 100) {
1899 /* ugly hack for CGA 160x100x16 - explain me the logic */
1902 height
= s
->cr
[VGA_CRTC_V_DISP_END
] |
1903 ((s
->cr
[VGA_CRTC_OVERFLOW
] & 0x02) << 7) |
1904 ((s
->cr
[VGA_CRTC_OVERFLOW
] & 0x40) << 3);
1905 height
= (height
+ 1) / cheight
;
1908 size
= (height
* width
);
1909 if (size
> CH_ATTR_SIZE
) {
1913 snprintf(msg_buffer
, sizeof(msg_buffer
), "%i x %i Text mode",
1918 if (width
!= s
->last_width
|| height
!= s
->last_height
||
1919 cw
!= s
->last_cw
|| cheight
!= s
->last_ch
) {
1920 s
->last_scr_width
= width
* cw
;
1921 s
->last_scr_height
= height
* cheight
;
1922 qemu_console_resize(s
->con
, s
->last_scr_width
, s
->last_scr_height
);
1923 dpy_text_resize(s
->con
, width
, height
);
1925 s
->last_width
= width
;
1926 s
->last_height
= height
;
1927 s
->last_ch
= cheight
;
1933 s
->full_update_gfx
= 1;
1935 if (s
->full_update_text
) {
1936 s
->full_update_text
= 0;
1940 /* Update "hardware" cursor */
1941 cursor_offset
= ((s
->cr
[VGA_CRTC_CURSOR_HI
] << 8) |
1942 s
->cr
[VGA_CRTC_CURSOR_LO
]) - s
->start_addr
;
1943 if (cursor_offset
!= s
->cursor_offset
||
1944 s
->cr
[VGA_CRTC_CURSOR_START
] != s
->cursor_start
||
1945 s
->cr
[VGA_CRTC_CURSOR_END
] != s
->cursor_end
|| full_update
) {
1946 cursor_visible
= !(s
->cr
[VGA_CRTC_CURSOR_START
] & 0x20);
1947 if (cursor_visible
&& cursor_offset
< size
&& cursor_offset
>= 0)
1948 dpy_text_cursor(s
->con
,
1949 TEXTMODE_X(cursor_offset
),
1950 TEXTMODE_Y(cursor_offset
));
1952 dpy_text_cursor(s
->con
, -1, -1);
1953 s
->cursor_offset
= cursor_offset
;
1954 s
->cursor_start
= s
->cr
[VGA_CRTC_CURSOR_START
];
1955 s
->cursor_end
= s
->cr
[VGA_CRTC_CURSOR_END
];
1958 src
= (uint32_t *) s
->vram_ptr
+ s
->start_addr
;
1962 for (i
= 0; i
< size
; src
++, dst
++, i
++)
1963 console_write_ch(dst
, VMEM2CHTYPE(le32_to_cpu(*src
)));
1965 dpy_text_update(s
->con
, 0, 0, width
, height
);
1969 for (i
= 0; i
< size
; src
++, dst
++, i
++) {
1970 console_write_ch(&val
, VMEM2CHTYPE(le32_to_cpu(*src
)));
1978 for (; i
< size
; src
++, dst
++, i
++) {
1979 console_write_ch(&val
, VMEM2CHTYPE(le32_to_cpu(*src
)));
1986 if (c_min
<= c_max
) {
1987 i
= TEXTMODE_Y(c_min
);
1988 dpy_text_update(s
->con
, 0, i
, width
, TEXTMODE_Y(c_max
) - i
+ 1);
1997 s
->get_resolution(s
, &width
, &height
);
1998 snprintf(msg_buffer
, sizeof(msg_buffer
), "%i x %i Graphic mode",
2006 snprintf(msg_buffer
, sizeof(msg_buffer
), "VGA Blank mode");
2010 /* Display a message */
2012 s
->last_height
= height
= 3;
2013 dpy_text_cursor(s
->con
, -1, -1);
2014 dpy_text_resize(s
->con
, s
->last_width
, height
);
2016 for (dst
= chardata
, i
= 0; i
< s
->last_width
* height
; i
++)
2017 console_write_ch(dst
++, ' ');
2019 size
= strlen(msg_buffer
);
2020 width
= (s
->last_width
- size
) / 2;
2021 dst
= chardata
+ s
->last_width
+ width
;
2022 for (i
= 0; i
< size
; i
++)
2023 console_write_ch(dst
++, ATTR2CHTYPE(msg_buffer
[i
], QEMU_COLOR_BLUE
,
2024 QEMU_COLOR_BLACK
, 1));
2026 dpy_text_update(s
->con
, 0, 0, s
->last_width
, height
);
2029 static uint64_t vga_mem_read(void *opaque
, hwaddr addr
,
2032 VGACommonState
*s
= opaque
;
2034 return vga_mem_readb(s
, addr
);
2037 static void vga_mem_write(void *opaque
, hwaddr addr
,
2038 uint64_t data
, unsigned size
)
2040 VGACommonState
*s
= opaque
;
2042 vga_mem_writeb(s
, addr
, data
);
2045 const MemoryRegionOps vga_mem_ops
= {
2046 .read
= vga_mem_read
,
2047 .write
= vga_mem_write
,
2048 .endianness
= DEVICE_LITTLE_ENDIAN
,
2050 .min_access_size
= 1,
2051 .max_access_size
= 1,
2055 static int vga_common_post_load(void *opaque
, int version_id
)
2057 VGACommonState
*s
= opaque
;
2060 s
->graphic_mode
= -1;
2061 vbe_update_vgaregs(s
);
2062 vga_update_memory_access(s
);
2066 static bool vga_endian_state_needed(void *opaque
)
2068 VGACommonState
*s
= opaque
;
2071 * Only send the endian state if it's different from the
2072 * default one, thus ensuring backward compatibility for
2073 * migration of the common case
2075 return s
->default_endian_fb
!= s
->big_endian_fb
;
2078 static const VMStateDescription vmstate_vga_endian
= {
2079 .name
= "vga.endian",
2081 .minimum_version_id
= 1,
2082 .needed
= vga_endian_state_needed
,
2083 .fields
= (VMStateField
[]) {
2084 VMSTATE_BOOL(big_endian_fb
, VGACommonState
),
2085 VMSTATE_END_OF_LIST()
2089 const VMStateDescription vmstate_vga_common
= {
2092 .minimum_version_id
= 2,
2093 .post_load
= vga_common_post_load
,
2094 .fields
= (VMStateField
[]) {
2095 VMSTATE_UINT32(latch
, VGACommonState
),
2096 VMSTATE_UINT8(sr_index
, VGACommonState
),
2097 VMSTATE_PARTIAL_BUFFER(sr
, VGACommonState
, 8),
2098 VMSTATE_UINT8(gr_index
, VGACommonState
),
2099 VMSTATE_PARTIAL_BUFFER(gr
, VGACommonState
, 16),
2100 VMSTATE_UINT8(ar_index
, VGACommonState
),
2101 VMSTATE_BUFFER(ar
, VGACommonState
),
2102 VMSTATE_INT32(ar_flip_flop
, VGACommonState
),
2103 VMSTATE_UINT8(cr_index
, VGACommonState
),
2104 VMSTATE_BUFFER(cr
, VGACommonState
),
2105 VMSTATE_UINT8(msr
, VGACommonState
),
2106 VMSTATE_UINT8(fcr
, VGACommonState
),
2107 VMSTATE_UINT8(st00
, VGACommonState
),
2108 VMSTATE_UINT8(st01
, VGACommonState
),
2110 VMSTATE_UINT8(dac_state
, VGACommonState
),
2111 VMSTATE_UINT8(dac_sub_index
, VGACommonState
),
2112 VMSTATE_UINT8(dac_read_index
, VGACommonState
),
2113 VMSTATE_UINT8(dac_write_index
, VGACommonState
),
2114 VMSTATE_BUFFER(dac_cache
, VGACommonState
),
2115 VMSTATE_BUFFER(palette
, VGACommonState
),
2117 VMSTATE_INT32(bank_offset
, VGACommonState
),
2118 VMSTATE_UINT8_EQUAL(is_vbe_vmstate
, VGACommonState
, NULL
),
2119 VMSTATE_UINT16(vbe_index
, VGACommonState
),
2120 VMSTATE_UINT16_ARRAY(vbe_regs
, VGACommonState
, VBE_DISPI_INDEX_NB
),
2121 VMSTATE_UINT32(vbe_start_addr
, VGACommonState
),
2122 VMSTATE_UINT32(vbe_line_offset
, VGACommonState
),
2123 VMSTATE_UINT32(vbe_bank_mask
, VGACommonState
),
2124 VMSTATE_END_OF_LIST()
2126 .subsections
= (const VMStateDescription
*[]) {
2127 &vmstate_vga_endian
,
2132 static const GraphicHwOps vga_ops
= {
2133 .invalidate
= vga_invalidate_display
,
2134 .gfx_update
= vga_update_display
,
2135 .text_update
= vga_update_text
,
2138 static inline uint32_t uint_clamp(uint32_t val
, uint32_t vmin
, uint32_t vmax
)
2149 void vga_common_init(VGACommonState
*s
, Object
*obj
, bool global_vmstate
)
2153 for(i
= 0;i
< 256; i
++) {
2155 for(j
= 0; j
< 8; j
++) {
2156 v
|= ((i
>> j
) & 1) << (j
* 4);
2161 for(j
= 0; j
< 4; j
++) {
2162 v
|= ((i
>> (2 * j
)) & 3) << (j
* 4);
2166 for(i
= 0; i
< 16; i
++) {
2168 for(j
= 0; j
< 4; j
++) {
2171 v
|= b
<< (2 * j
+ 1);
2176 s
->vram_size_mb
= uint_clamp(s
->vram_size_mb
, 1, 512);
2177 s
->vram_size_mb
= pow2ceil(s
->vram_size_mb
);
2178 s
->vram_size
= s
->vram_size_mb
<< 20;
2181 s
->vbe_size
= s
->vram_size
;
2183 s
->vbe_size_mask
= s
->vbe_size
- 1;
2185 s
->is_vbe_vmstate
= 1;
2186 memory_region_init_ram_nomigrate(&s
->vram
, obj
, "vga.vram", s
->vram_size
,
2188 vmstate_register_ram(&s
->vram
, global_vmstate
? NULL
: DEVICE(obj
));
2189 xen_register_framebuffer(&s
->vram
);
2190 s
->vram_ptr
= memory_region_get_ram_ptr(&s
->vram
);
2191 s
->get_bpp
= vga_get_bpp
;
2192 s
->get_offsets
= vga_get_offsets
;
2193 s
->get_resolution
= vga_get_resolution
;
2194 s
->hw_ops
= &vga_ops
;
2195 switch (vga_retrace_method
) {
2196 case VGA_RETRACE_DUMB
:
2197 s
->retrace
= vga_dumb_retrace
;
2198 s
->update_retrace_info
= vga_dumb_update_retrace_info
;
2201 case VGA_RETRACE_PRECISE
:
2202 s
->retrace
= vga_precise_retrace
;
2203 s
->update_retrace_info
= vga_precise_update_retrace_info
;
2208 * Set default fb endian based on target, could probably be turned
2209 * into a device attribute set by the machine/platform to remove
2210 * all target endian dependencies from this file.
2212 #ifdef TARGET_WORDS_BIGENDIAN
2213 s
->default_endian_fb
= true;
2215 s
->default_endian_fb
= false;
2217 vga_dirty_log_start(s
);
2220 static const MemoryRegionPortio vga_portio_list
[] = {
2221 { 0x04, 2, 1, .read
= vga_ioport_read
, .write
= vga_ioport_write
}, /* 3b4 */
2222 { 0x0a, 1, 1, .read
= vga_ioport_read
, .write
= vga_ioport_write
}, /* 3ba */
2223 { 0x10, 16, 1, .read
= vga_ioport_read
, .write
= vga_ioport_write
}, /* 3c0 */
2224 { 0x24, 2, 1, .read
= vga_ioport_read
, .write
= vga_ioport_write
}, /* 3d4 */
2225 { 0x2a, 1, 1, .read
= vga_ioport_read
, .write
= vga_ioport_write
}, /* 3da */
2226 PORTIO_END_OF_LIST(),
2229 static const MemoryRegionPortio vbe_portio_list
[] = {
2230 { 0, 1, 2, .read
= vbe_ioport_read_index
, .write
= vbe_ioport_write_index
},
2232 { 1, 1, 2, .read
= vbe_ioport_read_data
, .write
= vbe_ioport_write_data
},
2234 { 2, 1, 2, .read
= vbe_ioport_read_data
, .write
= vbe_ioport_write_data
},
2235 PORTIO_END_OF_LIST(),
2238 /* Used by both ISA and PCI */
2239 MemoryRegion
*vga_init_io(VGACommonState
*s
, Object
*obj
,
2240 const MemoryRegionPortio
**vga_ports
,
2241 const MemoryRegionPortio
**vbe_ports
)
2243 MemoryRegion
*vga_mem
;
2245 *vga_ports
= vga_portio_list
;
2246 *vbe_ports
= vbe_portio_list
;
2248 vga_mem
= g_malloc(sizeof(*vga_mem
));
2249 memory_region_init_io(vga_mem
, obj
, &vga_mem_ops
, s
,
2250 "vga-lowmem", 0x20000);
2251 memory_region_set_flush_coalesced(vga_mem
);
2256 void vga_init(VGACommonState
*s
, Object
*obj
, MemoryRegion
*address_space
,
2257 MemoryRegion
*address_space_io
, bool init_vga_ports
)
2259 MemoryRegion
*vga_io_memory
;
2260 const MemoryRegionPortio
*vga_ports
, *vbe_ports
;
2262 qemu_register_reset(vga_reset
, s
);
2266 s
->legacy_address_space
= address_space
;
2268 vga_io_memory
= vga_init_io(s
, obj
, &vga_ports
, &vbe_ports
);
2269 memory_region_add_subregion_overlap(address_space
,
2273 memory_region_set_coalescing(vga_io_memory
);
2274 if (init_vga_ports
) {
2275 portio_list_init(&s
->vga_port_list
, obj
, vga_ports
, s
, "vga");
2276 portio_list_set_flush_coalesced(&s
->vga_port_list
);
2277 portio_list_add(&s
->vga_port_list
, address_space_io
, 0x3b0);
2280 portio_list_init(&s
->vbe_port_list
, obj
, vbe_ports
, s
, "vbe");
2281 portio_list_add(&s
->vbe_port_list
, address_space_io
, 0x1ce);
2285 void vga_init_vbe(VGACommonState
*s
, Object
*obj
, MemoryRegion
*system_memory
)
2287 /* With pc-0.12 and below we map both the PCI BAR and the fixed VBE region,
2288 * so use an alias to avoid double-mapping the same region.
2290 memory_region_init_alias(&s
->vram_vbe
, obj
, "vram.vbe",
2291 &s
->vram
, 0, memory_region_size(&s
->vram
));
2292 /* XXX: use optimized standard vga accesses */
2293 memory_region_add_subregion(system_memory
,
2294 VBE_DISPI_LFB_PHYSICAL_ADDRESS
,