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qemu/hw/display/cirrus_vga.c
lu zhipeng 2fba4e9c49 cirrus_vga: fix potential memory overflow 
Signed-off-by: lu zhipeng <luzhipeng@cestc.cn>
Message-Id: <20220929122352.1891-1-luzhipeng@cestc.cn>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-10-12 11:00:55 +02:00

3028 lines
90 KiB
C
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/*
* QEMU Cirrus CLGD 54xx VGA Emulator.
*
* Copyright (c) 2004 Fabrice Bellard
* Copyright (c) 2004 Makoto Suzuki (suzu)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/*
* Reference: Finn Thogersons' VGADOC4b:
*
* http://web.archive.org/web/20021019054927/http://home.worldonline.dk/finth/
*
* VGADOC4b.ZIP content available at:
*
* https://pdos.csail.mit.edu/6.828/2005/readings/hardware/vgadoc
*/
#include "qemu/osdep.h"
#include "qemu/module.h"
#include "qemu/units.h"
#include "qemu/log.h"
#include "sysemu/reset.h"
#include "qapi/error.h"
#include "trace.h"
#include "hw/pci/pci.h"
#include "hw/qdev-properties.h"
#include "migration/vmstate.h"
#include "ui/pixel_ops.h"
#include "cirrus_vga_internal.h"
#include "qom/object.h"
/*
* TODO:
* - destination write mask support not complete (bits 5..7)
* - optimize linear mappings
* - optimize bitblt functions
*/
//#define DEBUG_CIRRUS
/***************************************
*
* definitions
*
***************************************/
// sequencer 0x07
#define CIRRUS_SR7_BPP_VGA 0x00
#define CIRRUS_SR7_BPP_SVGA 0x01
#define CIRRUS_SR7_BPP_MASK 0x0e
#define CIRRUS_SR7_BPP_8 0x00
#define CIRRUS_SR7_BPP_16_DOUBLEVCLK 0x02
#define CIRRUS_SR7_BPP_24 0x04
#define CIRRUS_SR7_BPP_16 0x06
#define CIRRUS_SR7_BPP_32 0x08
#define CIRRUS_SR7_ISAADDR_MASK 0xe0
// sequencer 0x0f
#define CIRRUS_MEMSIZE_512k 0x08
#define CIRRUS_MEMSIZE_1M 0x10
#define CIRRUS_MEMSIZE_2M 0x18
#define CIRRUS_MEMFLAGS_BANKSWITCH 0x80 // bank switching is enabled.
// sequencer 0x12
#define CIRRUS_CURSOR_SHOW 0x01
#define CIRRUS_CURSOR_HIDDENPEL 0x02
#define CIRRUS_CURSOR_LARGE 0x04 // 64x64 if set, 32x32 if clear
// sequencer 0x17
#define CIRRUS_BUSTYPE_VLBFAST 0x10
#define CIRRUS_BUSTYPE_PCI 0x20
#define CIRRUS_BUSTYPE_VLBSLOW 0x30
#define CIRRUS_BUSTYPE_ISA 0x38
#define CIRRUS_MMIO_ENABLE 0x04
#define CIRRUS_MMIO_USE_PCIADDR 0x40 // 0xb8000 if cleared.
#define CIRRUS_MEMSIZEEXT_DOUBLE 0x80
// control 0x0b
#define CIRRUS_BANKING_DUAL 0x01
#define CIRRUS_BANKING_GRANULARITY_16K 0x20 // set:16k, clear:4k
// control 0x30
#define CIRRUS_BLTMODE_BACKWARDS 0x01
#define CIRRUS_BLTMODE_MEMSYSDEST 0x02
#define CIRRUS_BLTMODE_MEMSYSSRC 0x04
#define CIRRUS_BLTMODE_TRANSPARENTCOMP 0x08
#define CIRRUS_BLTMODE_PATTERNCOPY 0x40
#define CIRRUS_BLTMODE_COLOREXPAND 0x80
#define CIRRUS_BLTMODE_PIXELWIDTHMASK 0x30
#define CIRRUS_BLTMODE_PIXELWIDTH8 0x00
#define CIRRUS_BLTMODE_PIXELWIDTH16 0x10
#define CIRRUS_BLTMODE_PIXELWIDTH24 0x20
#define CIRRUS_BLTMODE_PIXELWIDTH32 0x30
// control 0x31
#define CIRRUS_BLT_BUSY 0x01
#define CIRRUS_BLT_START 0x02
#define CIRRUS_BLT_RESET 0x04
#define CIRRUS_BLT_FIFOUSED 0x10
#define CIRRUS_BLT_AUTOSTART 0x80
// control 0x32
#define CIRRUS_ROP_0 0x00
#define CIRRUS_ROP_SRC_AND_DST 0x05
#define CIRRUS_ROP_NOP 0x06
#define CIRRUS_ROP_SRC_AND_NOTDST 0x09
#define CIRRUS_ROP_NOTDST 0x0b
#define CIRRUS_ROP_SRC 0x0d
#define CIRRUS_ROP_1 0x0e
#define CIRRUS_ROP_NOTSRC_AND_DST 0x50
#define CIRRUS_ROP_SRC_XOR_DST 0x59
#define CIRRUS_ROP_SRC_OR_DST 0x6d
#define CIRRUS_ROP_NOTSRC_OR_NOTDST 0x90
#define CIRRUS_ROP_SRC_NOTXOR_DST 0x95
#define CIRRUS_ROP_SRC_OR_NOTDST 0xad
#define CIRRUS_ROP_NOTSRC 0xd0
#define CIRRUS_ROP_NOTSRC_OR_DST 0xd6
#define CIRRUS_ROP_NOTSRC_AND_NOTDST 0xda
#define CIRRUS_ROP_NOP_INDEX 2
#define CIRRUS_ROP_SRC_INDEX 5
// control 0x33
#define CIRRUS_BLTMODEEXT_SOLIDFILL 0x04
#define CIRRUS_BLTMODEEXT_COLOREXPINV 0x02
#define CIRRUS_BLTMODEEXT_DWORDGRANULARITY 0x01
// memory-mapped IO
#define CIRRUS_MMIO_BLTBGCOLOR 0x00 // dword
#define CIRRUS_MMIO_BLTFGCOLOR 0x04 // dword
#define CIRRUS_MMIO_BLTWIDTH 0x08 // word
#define CIRRUS_MMIO_BLTHEIGHT 0x0a // word
#define CIRRUS_MMIO_BLTDESTPITCH 0x0c // word
#define CIRRUS_MMIO_BLTSRCPITCH 0x0e // word
#define CIRRUS_MMIO_BLTDESTADDR 0x10 // dword
#define CIRRUS_MMIO_BLTSRCADDR 0x14 // dword
#define CIRRUS_MMIO_BLTWRITEMASK 0x17 // byte
#define CIRRUS_MMIO_BLTMODE 0x18 // byte
#define CIRRUS_MMIO_BLTROP 0x1a // byte
#define CIRRUS_MMIO_BLTMODEEXT 0x1b // byte
#define CIRRUS_MMIO_BLTTRANSPARENTCOLOR 0x1c // word?
#define CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK 0x20 // word?
#define CIRRUS_MMIO_LINEARDRAW_START_X 0x24 // word
#define CIRRUS_MMIO_LINEARDRAW_START_Y 0x26 // word
#define CIRRUS_MMIO_LINEARDRAW_END_X 0x28 // word
#define CIRRUS_MMIO_LINEARDRAW_END_Y 0x2a // word
#define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_INC 0x2c // byte
#define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_ROLLOVER 0x2d // byte
#define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_MASK 0x2e // byte
#define CIRRUS_MMIO_LINEARDRAW_LINESTYLE_ACCUM 0x2f // byte
#define CIRRUS_MMIO_BRESENHAM_K1 0x30 // word
#define CIRRUS_MMIO_BRESENHAM_K3 0x32 // word
#define CIRRUS_MMIO_BRESENHAM_ERROR 0x34 // word
#define CIRRUS_MMIO_BRESENHAM_DELTA_MAJOR 0x36 // word
#define CIRRUS_MMIO_BRESENHAM_DIRECTION 0x38 // byte
#define CIRRUS_MMIO_LINEDRAW_MODE 0x39 // byte
#define CIRRUS_MMIO_BLTSTATUS 0x40 // byte
#define CIRRUS_PNPMMIO_SIZE 0x1000
typedef void (*cirrus_fill_t)(struct CirrusVGAState *s,
uint32_t dstaddr, int dst_pitch,
int width, int height);
struct PCICirrusVGAState {
PCIDevice dev;
CirrusVGAState cirrus_vga;
};
#define TYPE_PCI_CIRRUS_VGA "cirrus-vga"
OBJECT_DECLARE_SIMPLE_TYPE(PCICirrusVGAState, PCI_CIRRUS_VGA)
static uint8_t rop_to_index[256];
/***************************************
*
* prototypes.
*
***************************************/
static void cirrus_bitblt_reset(CirrusVGAState *s);
static void cirrus_update_memory_access(CirrusVGAState *s);
/***************************************
*
* raster operations
*
***************************************/
static bool blit_region_is_unsafe(struct CirrusVGAState *s,
int32_t pitch, int32_t addr)
{
if (!pitch) {
return true;
}
if (pitch < 0) {
int64_t min = addr
+ ((int64_t)s->cirrus_blt_height - 1) * pitch
- s->cirrus_blt_width;
if (min < -1 || addr >= s->vga.vram_size) {
return true;
}
} else {
int64_t max = addr
+ ((int64_t)s->cirrus_blt_height-1) * pitch
+ s->cirrus_blt_width;
if (max > s->vga.vram_size) {
return true;
}
}
return false;
}
static bool blit_is_unsafe(struct CirrusVGAState *s, bool dst_only)
{
/* should be the case, see cirrus_bitblt_start */
assert(s->cirrus_blt_width > 0);
assert(s->cirrus_blt_height > 0);
if (s->cirrus_blt_width > CIRRUS_BLTBUFSIZE) {
return true;
}
if (blit_region_is_unsafe(s, s->cirrus_blt_dstpitch,
s->cirrus_blt_dstaddr)) {
return true;
}
if (dst_only) {
return false;
}
if (blit_region_is_unsafe(s, s->cirrus_blt_srcpitch,
s->cirrus_blt_srcaddr)) {
return true;
}
return false;
}
static void cirrus_bitblt_rop_nop(CirrusVGAState *s,
uint32_t dstaddr, uint32_t srcaddr,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
{
}
static void cirrus_bitblt_fill_nop(CirrusVGAState *s,
uint32_t dstaddr,
int dstpitch, int bltwidth,int bltheight)
{
}
static inline uint8_t cirrus_src(CirrusVGAState *s, uint32_t srcaddr)
{
if (s->cirrus_srccounter) {
/* cputovideo */
return s->cirrus_bltbuf[srcaddr & (CIRRUS_BLTBUFSIZE - 1)];
} else {
/* videotovideo */
return s->vga.vram_ptr[srcaddr & s->cirrus_addr_mask];
}
}
static inline uint16_t cirrus_src16(CirrusVGAState *s, uint32_t srcaddr)
{
uint16_t *src;
if (s->cirrus_srccounter) {
/* cputovideo */
src = (void *)&s->cirrus_bltbuf[srcaddr & (CIRRUS_BLTBUFSIZE - 1) & ~1];
} else {
/* videotovideo */
src = (void *)&s->vga.vram_ptr[srcaddr & s->cirrus_addr_mask & ~1];
}
return *src;
}
static inline uint32_t cirrus_src32(CirrusVGAState *s, uint32_t srcaddr)
{
uint32_t *src;
if (s->cirrus_srccounter) {
/* cputovideo */
src = (void *)&s->cirrus_bltbuf[srcaddr & (CIRRUS_BLTBUFSIZE - 1) & ~3];
} else {
/* videotovideo */
src = (void *)&s->vga.vram_ptr[srcaddr & s->cirrus_addr_mask & ~3];
}
return *src;
}
#define ROP_NAME 0
#define ROP_FN(d, s) 0
#include "cirrus_vga_rop.h"
#define ROP_NAME src_and_dst
#define ROP_FN(d, s) (s) & (d)
#include "cirrus_vga_rop.h"
#define ROP_NAME src_and_notdst
#define ROP_FN(d, s) (s) & (~(d))
#include "cirrus_vga_rop.h"
#define ROP_NAME notdst
#define ROP_FN(d, s) ~(d)
#include "cirrus_vga_rop.h"
#define ROP_NAME src
#define ROP_FN(d, s) s
#include "cirrus_vga_rop.h"
#define ROP_NAME 1
#define ROP_FN(d, s) ~0
#include "cirrus_vga_rop.h"
#define ROP_NAME notsrc_and_dst
#define ROP_FN(d, s) (~(s)) & (d)
#include "cirrus_vga_rop.h"
#define ROP_NAME src_xor_dst
#define ROP_FN(d, s) (s) ^ (d)
#include "cirrus_vga_rop.h"
#define ROP_NAME src_or_dst
#define ROP_FN(d, s) (s) | (d)
#include "cirrus_vga_rop.h"
#define ROP_NAME notsrc_or_notdst
#define ROP_FN(d, s) (~(s)) | (~(d))
#include "cirrus_vga_rop.h"
#define ROP_NAME src_notxor_dst
#define ROP_FN(d, s) ~((s) ^ (d))
#include "cirrus_vga_rop.h"
#define ROP_NAME src_or_notdst
#define ROP_FN(d, s) (s) | (~(d))
#include "cirrus_vga_rop.h"
#define ROP_NAME notsrc
#define ROP_FN(d, s) (~(s))
#include "cirrus_vga_rop.h"
#define ROP_NAME notsrc_or_dst
#define ROP_FN(d, s) (~(s)) | (d)
#include "cirrus_vga_rop.h"
#define ROP_NAME notsrc_and_notdst
#define ROP_FN(d, s) (~(s)) & (~(d))
#include "cirrus_vga_rop.h"
static const cirrus_bitblt_rop_t cirrus_fwd_rop[16] = {
cirrus_bitblt_rop_fwd_0,
cirrus_bitblt_rop_fwd_src_and_dst,
cirrus_bitblt_rop_nop,
cirrus_bitblt_rop_fwd_src_and_notdst,
cirrus_bitblt_rop_fwd_notdst,
cirrus_bitblt_rop_fwd_src,
cirrus_bitblt_rop_fwd_1,
cirrus_bitblt_rop_fwd_notsrc_and_dst,
cirrus_bitblt_rop_fwd_src_xor_dst,
cirrus_bitblt_rop_fwd_src_or_dst,
cirrus_bitblt_rop_fwd_notsrc_or_notdst,
cirrus_bitblt_rop_fwd_src_notxor_dst,
cirrus_bitblt_rop_fwd_src_or_notdst,
cirrus_bitblt_rop_fwd_notsrc,
cirrus_bitblt_rop_fwd_notsrc_or_dst,
cirrus_bitblt_rop_fwd_notsrc_and_notdst,
};
static const cirrus_bitblt_rop_t cirrus_bkwd_rop[16] = {
cirrus_bitblt_rop_bkwd_0,
cirrus_bitblt_rop_bkwd_src_and_dst,
cirrus_bitblt_rop_nop,
cirrus_bitblt_rop_bkwd_src_and_notdst,
cirrus_bitblt_rop_bkwd_notdst,
cirrus_bitblt_rop_bkwd_src,
cirrus_bitblt_rop_bkwd_1,
cirrus_bitblt_rop_bkwd_notsrc_and_dst,
cirrus_bitblt_rop_bkwd_src_xor_dst,
cirrus_bitblt_rop_bkwd_src_or_dst,
cirrus_bitblt_rop_bkwd_notsrc_or_notdst,
cirrus_bitblt_rop_bkwd_src_notxor_dst,
cirrus_bitblt_rop_bkwd_src_or_notdst,
cirrus_bitblt_rop_bkwd_notsrc,
cirrus_bitblt_rop_bkwd_notsrc_or_dst,
cirrus_bitblt_rop_bkwd_notsrc_and_notdst,
};
#define TRANSP_ROP(name) {\
name ## _8,\
name ## _16,\
}
#define TRANSP_NOP(func) {\
func,\
func,\
}
static const cirrus_bitblt_rop_t cirrus_fwd_transp_rop[16][2] = {
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_0),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_and_dst),
TRANSP_NOP(cirrus_bitblt_rop_nop),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_and_notdst),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notdst),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_1),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_and_dst),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_xor_dst),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_or_dst),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_or_notdst),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_notxor_dst),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_src_or_notdst),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_or_dst),
TRANSP_ROP(cirrus_bitblt_rop_fwd_transp_notsrc_and_notdst),
};
static const cirrus_bitblt_rop_t cirrus_bkwd_transp_rop[16][2] = {
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_0),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_and_dst),
TRANSP_NOP(cirrus_bitblt_rop_nop),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_and_notdst),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notdst),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_1),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_and_dst),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_xor_dst),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_or_dst),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_or_notdst),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_notxor_dst),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_src_or_notdst),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_or_dst),
TRANSP_ROP(cirrus_bitblt_rop_bkwd_transp_notsrc_and_notdst),
};
#define ROP2(name) {\
name ## _8,\
name ## _16,\
name ## _24,\
name ## _32,\
}
#define ROP_NOP2(func) {\
func,\
func,\
func,\
func,\
}
static const cirrus_bitblt_rop_t cirrus_patternfill[16][4] = {
ROP2(cirrus_patternfill_0),
ROP2(cirrus_patternfill_src_and_dst),
ROP_NOP2(cirrus_bitblt_rop_nop),
ROP2(cirrus_patternfill_src_and_notdst),
ROP2(cirrus_patternfill_notdst),
ROP2(cirrus_patternfill_src),
ROP2(cirrus_patternfill_1),
ROP2(cirrus_patternfill_notsrc_and_dst),
ROP2(cirrus_patternfill_src_xor_dst),
ROP2(cirrus_patternfill_src_or_dst),
ROP2(cirrus_patternfill_notsrc_or_notdst),
ROP2(cirrus_patternfill_src_notxor_dst),
ROP2(cirrus_patternfill_src_or_notdst),
ROP2(cirrus_patternfill_notsrc),
ROP2(cirrus_patternfill_notsrc_or_dst),
ROP2(cirrus_patternfill_notsrc_and_notdst),
};
static const cirrus_bitblt_rop_t cirrus_colorexpand_transp[16][4] = {
ROP2(cirrus_colorexpand_transp_0),
ROP2(cirrus_colorexpand_transp_src_and_dst),
ROP_NOP2(cirrus_bitblt_rop_nop),
ROP2(cirrus_colorexpand_transp_src_and_notdst),
ROP2(cirrus_colorexpand_transp_notdst),
ROP2(cirrus_colorexpand_transp_src),
ROP2(cirrus_colorexpand_transp_1),
ROP2(cirrus_colorexpand_transp_notsrc_and_dst),
ROP2(cirrus_colorexpand_transp_src_xor_dst),
ROP2(cirrus_colorexpand_transp_src_or_dst),
ROP2(cirrus_colorexpand_transp_notsrc_or_notdst),
ROP2(cirrus_colorexpand_transp_src_notxor_dst),
ROP2(cirrus_colorexpand_transp_src_or_notdst),
ROP2(cirrus_colorexpand_transp_notsrc),
ROP2(cirrus_colorexpand_transp_notsrc_or_dst),
ROP2(cirrus_colorexpand_transp_notsrc_and_notdst),
};
static const cirrus_bitblt_rop_t cirrus_colorexpand[16][4] = {
ROP2(cirrus_colorexpand_0),
ROP2(cirrus_colorexpand_src_and_dst),
ROP_NOP2(cirrus_bitblt_rop_nop),
ROP2(cirrus_colorexpand_src_and_notdst),
ROP2(cirrus_colorexpand_notdst),
ROP2(cirrus_colorexpand_src),
ROP2(cirrus_colorexpand_1),
ROP2(cirrus_colorexpand_notsrc_and_dst),
ROP2(cirrus_colorexpand_src_xor_dst),
ROP2(cirrus_colorexpand_src_or_dst),
ROP2(cirrus_colorexpand_notsrc_or_notdst),
ROP2(cirrus_colorexpand_src_notxor_dst),
ROP2(cirrus_colorexpand_src_or_notdst),
ROP2(cirrus_colorexpand_notsrc),
ROP2(cirrus_colorexpand_notsrc_or_dst),
ROP2(cirrus_colorexpand_notsrc_and_notdst),
};
static const cirrus_bitblt_rop_t cirrus_colorexpand_pattern_transp[16][4] = {
ROP2(cirrus_colorexpand_pattern_transp_0),
ROP2(cirrus_colorexpand_pattern_transp_src_and_dst),
ROP_NOP2(cirrus_bitblt_rop_nop),
ROP2(cirrus_colorexpand_pattern_transp_src_and_notdst),
ROP2(cirrus_colorexpand_pattern_transp_notdst),
ROP2(cirrus_colorexpand_pattern_transp_src),
ROP2(cirrus_colorexpand_pattern_transp_1),
ROP2(cirrus_colorexpand_pattern_transp_notsrc_and_dst),
ROP2(cirrus_colorexpand_pattern_transp_src_xor_dst),
ROP2(cirrus_colorexpand_pattern_transp_src_or_dst),
ROP2(cirrus_colorexpand_pattern_transp_notsrc_or_notdst),
ROP2(cirrus_colorexpand_pattern_transp_src_notxor_dst),
ROP2(cirrus_colorexpand_pattern_transp_src_or_notdst),
ROP2(cirrus_colorexpand_pattern_transp_notsrc),
ROP2(cirrus_colorexpand_pattern_transp_notsrc_or_dst),
ROP2(cirrus_colorexpand_pattern_transp_notsrc_and_notdst),
};
static const cirrus_bitblt_rop_t cirrus_colorexpand_pattern[16][4] = {
ROP2(cirrus_colorexpand_pattern_0),
ROP2(cirrus_colorexpand_pattern_src_and_dst),
ROP_NOP2(cirrus_bitblt_rop_nop),
ROP2(cirrus_colorexpand_pattern_src_and_notdst),
ROP2(cirrus_colorexpand_pattern_notdst),
ROP2(cirrus_colorexpand_pattern_src),
ROP2(cirrus_colorexpand_pattern_1),
ROP2(cirrus_colorexpand_pattern_notsrc_and_dst),
ROP2(cirrus_colorexpand_pattern_src_xor_dst),
ROP2(cirrus_colorexpand_pattern_src_or_dst),
ROP2(cirrus_colorexpand_pattern_notsrc_or_notdst),
ROP2(cirrus_colorexpand_pattern_src_notxor_dst),
ROP2(cirrus_colorexpand_pattern_src_or_notdst),
ROP2(cirrus_colorexpand_pattern_notsrc),
ROP2(cirrus_colorexpand_pattern_notsrc_or_dst),
ROP2(cirrus_colorexpand_pattern_notsrc_and_notdst),
};
static const cirrus_fill_t cirrus_fill[16][4] = {
ROP2(cirrus_fill_0),
ROP2(cirrus_fill_src_and_dst),
ROP_NOP2(cirrus_bitblt_fill_nop),
ROP2(cirrus_fill_src_and_notdst),
ROP2(cirrus_fill_notdst),
ROP2(cirrus_fill_src),
ROP2(cirrus_fill_1),
ROP2(cirrus_fill_notsrc_and_dst),
ROP2(cirrus_fill_src_xor_dst),
ROP2(cirrus_fill_src_or_dst),
ROP2(cirrus_fill_notsrc_or_notdst),
ROP2(cirrus_fill_src_notxor_dst),
ROP2(cirrus_fill_src_or_notdst),
ROP2(cirrus_fill_notsrc),
ROP2(cirrus_fill_notsrc_or_dst),
ROP2(cirrus_fill_notsrc_and_notdst),
};
static inline void cirrus_bitblt_fgcol(CirrusVGAState *s)
{
unsigned int color;
switch (s->cirrus_blt_pixelwidth) {
case 1:
s->cirrus_blt_fgcol = s->cirrus_shadow_gr1;
break;
case 2:
color = s->cirrus_shadow_gr1 | (s->vga.gr[0x11] << 8);
s->cirrus_blt_fgcol = le16_to_cpu(color);
break;
case 3:
s->cirrus_blt_fgcol = s->cirrus_shadow_gr1 |
(s->vga.gr[0x11] << 8) | (s->vga.gr[0x13] << 16);
break;
default:
case 4:
color = s->cirrus_shadow_gr1 | (s->vga.gr[0x11] << 8) |
(s->vga.gr[0x13] << 16) | (s->vga.gr[0x15] << 24);
s->cirrus_blt_fgcol = le32_to_cpu(color);
break;
}
}
static inline void cirrus_bitblt_bgcol(CirrusVGAState *s)
{
unsigned int color;
switch (s->cirrus_blt_pixelwidth) {
case 1:
s->cirrus_blt_bgcol = s->cirrus_shadow_gr0;
break;
case 2:
color = s->cirrus_shadow_gr0 | (s->vga.gr[0x10] << 8);
s->cirrus_blt_bgcol = le16_to_cpu(color);
break;
case 3:
s->cirrus_blt_bgcol = s->cirrus_shadow_gr0 |
(s->vga.gr[0x10] << 8) | (s->vga.gr[0x12] << 16);
break;
default:
case 4:
color = s->cirrus_shadow_gr0 | (s->vga.gr[0x10] << 8) |
(s->vga.gr[0x12] << 16) | (s->vga.gr[0x14] << 24);
s->cirrus_blt_bgcol = le32_to_cpu(color);
break;
}
}
static void cirrus_invalidate_region(CirrusVGAState * s, int off_begin,
int off_pitch, int bytesperline,
int lines)
{
int y;
int off_cur;
int off_cur_end;
if (off_pitch < 0) {
off_begin -= bytesperline - 1;
}
for (y = 0; y < lines; y++) {
off_cur = off_begin & s->cirrus_addr_mask;
off_cur_end = ((off_cur + bytesperline - 1) & s->cirrus_addr_mask) + 1;
if (off_cur_end >= off_cur) {
memory_region_set_dirty(&s->vga.vram, off_cur, off_cur_end - off_cur);
} else {
/* wraparound */
memory_region_set_dirty(&s->vga.vram, off_cur,
s->cirrus_addr_mask + 1 - off_cur);
memory_region_set_dirty(&s->vga.vram, 0, off_cur_end);
}
off_begin += off_pitch;
}
}
static int cirrus_bitblt_common_patterncopy(CirrusVGAState *s)
{
uint32_t patternsize;
bool videosrc = !s->cirrus_srccounter;
if (videosrc) {
switch (s->vga.get_bpp(&s->vga)) {
case 8:
patternsize = 64;
break;
case 15:
case 16:
patternsize = 128;
break;
case 24:
case 32:
default:
patternsize = 256;
break;
}
s->cirrus_blt_srcaddr &= ~(patternsize - 1);
if (s->cirrus_blt_srcaddr + patternsize > s->vga.vram_size) {
return 0;
}
}
if (blit_is_unsafe(s, true)) {
return 0;
}
(*s->cirrus_rop) (s, s->cirrus_blt_dstaddr,
videosrc ? s->cirrus_blt_srcaddr : 0,
s->cirrus_blt_dstpitch, 0,
s->cirrus_blt_width, s->cirrus_blt_height);
cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
s->cirrus_blt_dstpitch, s->cirrus_blt_width,
s->cirrus_blt_height);
return 1;
}
/* fill */
static int cirrus_bitblt_solidfill(CirrusVGAState *s, int blt_rop)
{
cirrus_fill_t rop_func;
if (blit_is_unsafe(s, true)) {
return 0;
}
rop_func = cirrus_fill[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
rop_func(s, s->cirrus_blt_dstaddr,
s->cirrus_blt_dstpitch,
s->cirrus_blt_width, s->cirrus_blt_height);
cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
s->cirrus_blt_dstpitch, s->cirrus_blt_width,
s->cirrus_blt_height);
cirrus_bitblt_reset(s);
return 1;
}
/***************************************
*
* bitblt (video-to-video)
*
***************************************/
static int cirrus_bitblt_videotovideo_patterncopy(CirrusVGAState * s)
{
return cirrus_bitblt_common_patterncopy(s);
}
static int cirrus_do_copy(CirrusVGAState *s, int dst, int src, int w, int h)
{
int sx = 0, sy = 0;
int dx = 0, dy = 0;
int depth = 0;
int notify = 0;
/* make sure to only copy if it's a plain copy ROP */
if (*s->cirrus_rop == cirrus_bitblt_rop_fwd_src ||
*s->cirrus_rop == cirrus_bitblt_rop_bkwd_src) {
int width, height;
depth = s->vga.get_bpp(&s->vga) / 8;
if (!depth) {
return 0;
}
s->vga.get_resolution(&s->vga, &width, &height);
/* extra x, y */
sx = (src % ABS(s->cirrus_blt_srcpitch)) / depth;
sy = (src / ABS(s->cirrus_blt_srcpitch));
dx = (dst % ABS(s->cirrus_blt_dstpitch)) / depth;
dy = (dst / ABS(s->cirrus_blt_dstpitch));
/* normalize width */
w /= depth;
/* if we're doing a backward copy, we have to adjust
our x/y to be the upper left corner (instead of the lower
right corner) */
if (s->cirrus_blt_dstpitch < 0) {
sx -= (s->cirrus_blt_width / depth) - 1;
dx -= (s->cirrus_blt_width / depth) - 1;
sy -= s->cirrus_blt_height - 1;
dy -= s->cirrus_blt_height - 1;
}
/* are we in the visible portion of memory? */
if (sx >= 0 && sy >= 0 && dx >= 0 && dy >= 0 &&
(sx + w) <= width && (sy + h) <= height &&
(dx + w) <= width && (dy + h) <= height) {
notify = 1;
}
}
(*s->cirrus_rop) (s, s->cirrus_blt_dstaddr,
s->cirrus_blt_srcaddr,
s->cirrus_blt_dstpitch, s->cirrus_blt_srcpitch,
s->cirrus_blt_width, s->cirrus_blt_height);
if (notify) {
dpy_gfx_update(s->vga.con, dx, dy,
s->cirrus_blt_width / depth,
s->cirrus_blt_height);
}
/* we don't have to notify the display that this portion has
changed since qemu_console_copy implies this */
cirrus_invalidate_region(s, s->cirrus_blt_dstaddr,
s->cirrus_blt_dstpitch, s->cirrus_blt_width,
s->cirrus_blt_height);
return 1;
}
static int cirrus_bitblt_videotovideo_copy(CirrusVGAState * s)
{
if (blit_is_unsafe(s, false))
return 0;
return cirrus_do_copy(s, s->cirrus_blt_dstaddr - s->vga.start_addr,
s->cirrus_blt_srcaddr - s->vga.start_addr,
s->cirrus_blt_width, s->cirrus_blt_height);
}
/***************************************
*
* bitblt (cpu-to-video)
*
***************************************/
static void cirrus_bitblt_cputovideo_next(CirrusVGAState * s)
{
int copy_count;
uint8_t *end_ptr;
if (s->cirrus_srccounter > 0) {
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
cirrus_bitblt_common_patterncopy(s);
the_end:
s->cirrus_srccounter = 0;
cirrus_bitblt_reset(s);
} else {
/* at least one scan line */
do {
(*s->cirrus_rop)(s, s->cirrus_blt_dstaddr,
0, 0, 0, s->cirrus_blt_width, 1);
cirrus_invalidate_region(s, s->cirrus_blt_dstaddr, 0,
s->cirrus_blt_width, 1);
s->cirrus_blt_dstaddr += s->cirrus_blt_dstpitch;
s->cirrus_srccounter -= s->cirrus_blt_srcpitch;
if (s->cirrus_srccounter <= 0)
goto the_end;
/* more bytes than needed can be transferred because of
word alignment, so we keep them for the next line */
/* XXX: keep alignment to speed up transfer */
end_ptr = s->cirrus_bltbuf + s->cirrus_blt_srcpitch;
copy_count = MIN(s->cirrus_srcptr_end - end_ptr, CIRRUS_BLTBUFSIZE);
memmove(s->cirrus_bltbuf, end_ptr, copy_count);
s->cirrus_srcptr = s->cirrus_bltbuf + copy_count;
s->cirrus_srcptr_end = s->cirrus_bltbuf + s->cirrus_blt_srcpitch;
} while (s->cirrus_srcptr >= s->cirrus_srcptr_end);
}
}
}
/***************************************
*
* bitblt wrapper
*
***************************************/
static void cirrus_bitblt_reset(CirrusVGAState * s)
{
int need_update;
s->vga.gr[0x31] &=
~(CIRRUS_BLT_START | CIRRUS_BLT_BUSY | CIRRUS_BLT_FIFOUSED);
need_update = s->cirrus_srcptr != &s->cirrus_bltbuf[0]
|| s->cirrus_srcptr_end != &s->cirrus_bltbuf[0];
s->cirrus_srcptr = &s->cirrus_bltbuf[0];
s->cirrus_srcptr_end = &s->cirrus_bltbuf[0];
s->cirrus_srccounter = 0;
if (!need_update)
return;
cirrus_update_memory_access(s);
}
static int cirrus_bitblt_cputovideo(CirrusVGAState * s)
{
int w;
if (blit_is_unsafe(s, true)) {
return 0;
}
s->cirrus_blt_mode &= ~CIRRUS_BLTMODE_MEMSYSSRC;
s->cirrus_srcptr = &s->cirrus_bltbuf[0];
s->cirrus_srcptr_end = &s->cirrus_bltbuf[0];
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_COLOREXPAND) {
s->cirrus_blt_srcpitch = 8;
} else {
/* XXX: check for 24 bpp */
s->cirrus_blt_srcpitch = 8 * 8 * s->cirrus_blt_pixelwidth;
}
s->cirrus_srccounter = s->cirrus_blt_srcpitch;
} else {
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_COLOREXPAND) {
w = s->cirrus_blt_width / s->cirrus_blt_pixelwidth;
if (s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_DWORDGRANULARITY)
s->cirrus_blt_srcpitch = ((w + 31) >> 5);
else
s->cirrus_blt_srcpitch = ((w + 7) >> 3);
} else {
/* always align input size to 32 bits */
s->cirrus_blt_srcpitch = (s->cirrus_blt_width + 3) & ~3;
}
s->cirrus_srccounter = s->cirrus_blt_srcpitch * s->cirrus_blt_height;
}
/* the blit_is_unsafe call above should catch this */
assert(s->cirrus_blt_srcpitch <= CIRRUS_BLTBUFSIZE);
s->cirrus_srcptr = s->cirrus_bltbuf;
s->cirrus_srcptr_end = s->cirrus_bltbuf + s->cirrus_blt_srcpitch;
cirrus_update_memory_access(s);
return 1;
}
static int cirrus_bitblt_videotocpu(CirrusVGAState * s)
{
/* XXX */
qemu_log_mask(LOG_UNIMP,
"cirrus: bitblt (video to cpu) is not implemented\n");
return 0;
}
static int cirrus_bitblt_videotovideo(CirrusVGAState * s)
{
int ret;
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
ret = cirrus_bitblt_videotovideo_patterncopy(s);
} else {
ret = cirrus_bitblt_videotovideo_copy(s);
}
if (ret)
cirrus_bitblt_reset(s);
return ret;
}
static void cirrus_bitblt_start(CirrusVGAState * s)
{
uint8_t blt_rop;
if (!s->enable_blitter) {
goto bitblt_ignore;
}
s->vga.gr[0x31] |= CIRRUS_BLT_BUSY;
s->cirrus_blt_width = (s->vga.gr[0x20] | (s->vga.gr[0x21] << 8)) + 1;
s->cirrus_blt_height = (s->vga.gr[0x22] | (s->vga.gr[0x23] << 8)) + 1;
s->cirrus_blt_dstpitch = (s->vga.gr[0x24] | (s->vga.gr[0x25] << 8));
s->cirrus_blt_srcpitch = (s->vga.gr[0x26] | (s->vga.gr[0x27] << 8));
s->cirrus_blt_dstaddr =
(s->vga.gr[0x28] | (s->vga.gr[0x29] << 8) | (s->vga.gr[0x2a] << 16));
s->cirrus_blt_srcaddr =
(s->vga.gr[0x2c] | (s->vga.gr[0x2d] << 8) | (s->vga.gr[0x2e] << 16));
s->cirrus_blt_mode = s->vga.gr[0x30];
s->cirrus_blt_modeext = s->vga.gr[0x33];
blt_rop = s->vga.gr[0x32];
s->cirrus_blt_dstaddr &= s->cirrus_addr_mask;
s->cirrus_blt_srcaddr &= s->cirrus_addr_mask;
trace_vga_cirrus_bitblt_start(blt_rop,
s->cirrus_blt_mode,
s->cirrus_blt_modeext,
s->cirrus_blt_width,
s->cirrus_blt_height,
s->cirrus_blt_dstpitch,
s->cirrus_blt_srcpitch,
s->cirrus_blt_dstaddr,
s->cirrus_blt_srcaddr,
s->vga.gr[0x2f]);
switch (s->cirrus_blt_mode & CIRRUS_BLTMODE_PIXELWIDTHMASK) {
case CIRRUS_BLTMODE_PIXELWIDTH8:
s->cirrus_blt_pixelwidth = 1;
break;
case CIRRUS_BLTMODE_PIXELWIDTH16:
s->cirrus_blt_pixelwidth = 2;
break;
case CIRRUS_BLTMODE_PIXELWIDTH24:
s->cirrus_blt_pixelwidth = 3;
break;
case CIRRUS_BLTMODE_PIXELWIDTH32:
s->cirrus_blt_pixelwidth = 4;
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: bitblt - pixel width is unknown\n");
goto bitblt_ignore;
}
s->cirrus_blt_mode &= ~CIRRUS_BLTMODE_PIXELWIDTHMASK;
if ((s->
cirrus_blt_mode & (CIRRUS_BLTMODE_MEMSYSSRC |
CIRRUS_BLTMODE_MEMSYSDEST))
== (CIRRUS_BLTMODE_MEMSYSSRC | CIRRUS_BLTMODE_MEMSYSDEST)) {
qemu_log_mask(LOG_UNIMP,
"cirrus: bitblt - memory-to-memory copy requested\n");
goto bitblt_ignore;
}
if ((s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_SOLIDFILL) &&
(s->cirrus_blt_mode & (CIRRUS_BLTMODE_MEMSYSDEST |
CIRRUS_BLTMODE_TRANSPARENTCOMP |
CIRRUS_BLTMODE_PATTERNCOPY |
CIRRUS_BLTMODE_COLOREXPAND)) ==
(CIRRUS_BLTMODE_PATTERNCOPY | CIRRUS_BLTMODE_COLOREXPAND)) {
cirrus_bitblt_fgcol(s);
cirrus_bitblt_solidfill(s, blt_rop);
} else {
if ((s->cirrus_blt_mode & (CIRRUS_BLTMODE_COLOREXPAND |
CIRRUS_BLTMODE_PATTERNCOPY)) ==
CIRRUS_BLTMODE_COLOREXPAND) {
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_TRANSPARENTCOMP) {
if (s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_COLOREXPINV)
cirrus_bitblt_bgcol(s);
else
cirrus_bitblt_fgcol(s);
s->cirrus_rop = cirrus_colorexpand_transp[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
} else {
cirrus_bitblt_fgcol(s);
cirrus_bitblt_bgcol(s);
s->cirrus_rop = cirrus_colorexpand[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
}
} else if (s->cirrus_blt_mode & CIRRUS_BLTMODE_PATTERNCOPY) {
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_COLOREXPAND) {
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_TRANSPARENTCOMP) {
if (s->cirrus_blt_modeext & CIRRUS_BLTMODEEXT_COLOREXPINV)
cirrus_bitblt_bgcol(s);
else
cirrus_bitblt_fgcol(s);
s->cirrus_rop = cirrus_colorexpand_pattern_transp[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
} else {
cirrus_bitblt_fgcol(s);
cirrus_bitblt_bgcol(s);
s->cirrus_rop = cirrus_colorexpand_pattern[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
}
} else {
s->cirrus_rop = cirrus_patternfill[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
}
} else {
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_TRANSPARENTCOMP) {
if (s->cirrus_blt_pixelwidth > 2) {
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: src transparent without colorexpand "
"must be 8bpp or 16bpp\n");
goto bitblt_ignore;
}
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_BACKWARDS) {
s->cirrus_blt_dstpitch = -s->cirrus_blt_dstpitch;
s->cirrus_blt_srcpitch = -s->cirrus_blt_srcpitch;
s->cirrus_rop = cirrus_bkwd_transp_rop[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
} else {
s->cirrus_rop = cirrus_fwd_transp_rop[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1];
}
} else {
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_BACKWARDS) {
s->cirrus_blt_dstpitch = -s->cirrus_blt_dstpitch;
s->cirrus_blt_srcpitch = -s->cirrus_blt_srcpitch;
s->cirrus_rop = cirrus_bkwd_rop[rop_to_index[blt_rop]];
} else {
s->cirrus_rop = cirrus_fwd_rop[rop_to_index[blt_rop]];
}
}
}
// setup bitblt engine.
if (s->cirrus_blt_mode & CIRRUS_BLTMODE_MEMSYSSRC) {
if (!cirrus_bitblt_cputovideo(s))
goto bitblt_ignore;
} else if (s->cirrus_blt_mode & CIRRUS_BLTMODE_MEMSYSDEST) {
if (!cirrus_bitblt_videotocpu(s))
goto bitblt_ignore;
} else {
if (!cirrus_bitblt_videotovideo(s))
goto bitblt_ignore;
}
}
return;
bitblt_ignore:;
cirrus_bitblt_reset(s);
}
static void cirrus_write_bitblt(CirrusVGAState * s, unsigned reg_value)
{
unsigned old_value;
old_value = s->vga.gr[0x31];
s->vga.gr[0x31] = reg_value;
if (((old_value & CIRRUS_BLT_RESET) != 0) &&
((reg_value & CIRRUS_BLT_RESET) == 0)) {
cirrus_bitblt_reset(s);
} else if (((old_value & CIRRUS_BLT_START) == 0) &&
((reg_value & CIRRUS_BLT_START) != 0)) {
cirrus_bitblt_start(s);
}
}
/***************************************
*
* basic parameters
*
***************************************/
static void cirrus_get_offsets(VGACommonState *s1,
uint32_t *pline_offset,
uint32_t *pstart_addr,
uint32_t *pline_compare)
{
CirrusVGAState * s = container_of(s1, CirrusVGAState, vga);
uint32_t start_addr, line_offset, line_compare;
line_offset = s->vga.cr[0x13]
| ((s->vga.cr[0x1b] & 0x10) << 4);
line_offset <<= 3;
*pline_offset = line_offset;
start_addr = (s->vga.cr[0x0c] << 8)
| s->vga.cr[0x0d]
| ((s->vga.cr[0x1b] & 0x01) << 16)
| ((s->vga.cr[0x1b] & 0x0c) << 15)
| ((s->vga.cr[0x1d] & 0x80) << 12);
*pstart_addr = start_addr;
line_compare = s->vga.cr[0x18] |
((s->vga.cr[0x07] & 0x10) << 4) |
((s->vga.cr[0x09] & 0x40) << 3);
*pline_compare = line_compare;
}
static uint32_t cirrus_get_bpp16_depth(CirrusVGAState * s)
{
uint32_t ret = 16;
switch (s->cirrus_hidden_dac_data & 0xf) {
case 0:
ret = 15;
break; /* Sierra HiColor */
case 1:
ret = 16;
break; /* XGA HiColor */
default:
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: invalid DAC value 0x%x in 16bpp\n",
(s->cirrus_hidden_dac_data & 0xf));
ret = 15; /* XXX */
break;
}
return ret;
}
static int cirrus_get_bpp(VGACommonState *s1)
{
CirrusVGAState * s = container_of(s1, CirrusVGAState, vga);
uint32_t ret = 8;
if ((s->vga.sr[0x07] & 0x01) != 0) {
/* Cirrus SVGA */
switch (s->vga.sr[0x07] & CIRRUS_SR7_BPP_MASK) {
case CIRRUS_SR7_BPP_8:
ret = 8;
break;
case CIRRUS_SR7_BPP_16_DOUBLEVCLK:
ret = cirrus_get_bpp16_depth(s);
break;
case CIRRUS_SR7_BPP_24:
ret = 24;
break;
case CIRRUS_SR7_BPP_16:
ret = cirrus_get_bpp16_depth(s);
break;
case CIRRUS_SR7_BPP_32:
ret = 32;
break;
default:
#ifdef DEBUG_CIRRUS
printf("cirrus: unknown bpp - sr7=%x\n", s->vga.sr[0x7]);
#endif
ret = 8;
break;
}
} else {
/* VGA */
ret = 0;
}
return ret;
}
static void cirrus_get_resolution(VGACommonState *s, int *pwidth, int *pheight)
{
int width, height;
width = (s->cr[0x01] + 1) * 8;
height = s->cr[0x12] |
((s->cr[0x07] & 0x02) << 7) |
((s->cr[0x07] & 0x40) << 3);
height = (height + 1);
/* interlace support */
if (s->cr[0x1a] & 0x01)
height = height * 2;
*pwidth = width;
*pheight = height;
}
/***************************************
*
* bank memory
*
***************************************/
static void cirrus_update_bank_ptr(CirrusVGAState * s, unsigned bank_index)
{
unsigned offset;
unsigned limit;
if ((s->vga.gr[0x0b] & 0x01) != 0) /* dual bank */
offset = s->vga.gr[0x09 + bank_index];
else /* single bank */
offset = s->vga.gr[0x09];
if ((s->vga.gr[0x0b] & 0x20) != 0)
offset <<= 14;
else
offset <<= 12;
if (s->real_vram_size <= offset)
limit = 0;
else
limit = s->real_vram_size - offset;
if (((s->vga.gr[0x0b] & 0x01) == 0) && (bank_index != 0)) {
if (limit > 0x8000) {
offset += 0x8000;
limit -= 0x8000;
} else {
limit = 0;
}
}
if (limit > 0) {
s->cirrus_bank_base[bank_index] = offset;
s->cirrus_bank_limit[bank_index] = limit;
} else {
s->cirrus_bank_base[bank_index] = 0;
s->cirrus_bank_limit[bank_index] = 0;
}
}
/***************************************
*
* I/O access between 0x3c4-0x3c5
*
***************************************/
static int cirrus_vga_read_sr(CirrusVGAState * s)
{
switch (s->vga.sr_index) {
case 0x00: // Standard VGA
case 0x01: // Standard VGA
case 0x02: // Standard VGA
case 0x03: // Standard VGA
case 0x04: // Standard VGA
return s->vga.sr[s->vga.sr_index];
case 0x06: // Unlock Cirrus extensions
return s->vga.sr[s->vga.sr_index];
case 0x10:
case 0x30:
case 0x50:
case 0x70: // Graphics Cursor X
case 0x90:
case 0xb0:
case 0xd0:
case 0xf0: // Graphics Cursor X
return s->vga.sr[0x10];
case 0x11:
case 0x31:
case 0x51:
case 0x71: // Graphics Cursor Y
case 0x91:
case 0xb1:
case 0xd1:
case 0xf1: // Graphics Cursor Y
return s->vga.sr[0x11];
case 0x05: // ???
case 0x07: // Extended Sequencer Mode
case 0x08: // EEPROM Control
case 0x09: // Scratch Register 0
case 0x0a: // Scratch Register 1
case 0x0b: // VCLK 0
case 0x0c: // VCLK 1
case 0x0d: // VCLK 2
case 0x0e: // VCLK 3
case 0x0f: // DRAM Control
case 0x12: // Graphics Cursor Attribute
case 0x13: // Graphics Cursor Pattern Address
case 0x14: // Scratch Register 2
case 0x15: // Scratch Register 3
case 0x16: // Performance Tuning Register
case 0x17: // Configuration Readback and Extended Control
case 0x18: // Signature Generator Control
case 0x19: // Signal Generator Result
case 0x1a: // Signal Generator Result
case 0x1b: // VCLK 0 Denominator & Post
case 0x1c: // VCLK 1 Denominator & Post
case 0x1d: // VCLK 2 Denominator & Post
case 0x1e: // VCLK 3 Denominator & Post
case 0x1f: // BIOS Write Enable and MCLK select
#ifdef DEBUG_CIRRUS
printf("cirrus: handled inport sr_index %02x\n", s->vga.sr_index);
#endif
return s->vga.sr[s->vga.sr_index];
default:
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: inport sr_index 0x%02x\n", s->vga.sr_index);
return 0xff;
}
}
static void cirrus_vga_write_sr(CirrusVGAState * s, uint32_t val)
{
switch (s->vga.sr_index) {
case 0x00: // Standard VGA
case 0x01: // Standard VGA
case 0x02: // Standard VGA
case 0x03: // Standard VGA
case 0x04: // Standard VGA
s->vga.sr[s->vga.sr_index] = val & sr_mask[s->vga.sr_index];
if (s->vga.sr_index == 1)
s->vga.update_retrace_info(&s->vga);
break;
case 0x06: // Unlock Cirrus extensions
val &= 0x17;
if (val == 0x12) {
s->vga.sr[s->vga.sr_index] = 0x12;
} else {
s->vga.sr[s->vga.sr_index] = 0x0f;
}
break;
case 0x10:
case 0x30:
case 0x50:
case 0x70: // Graphics Cursor X
case 0x90:
case 0xb0:
case 0xd0:
case 0xf0: // Graphics Cursor X
s->vga.sr[0x10] = val;
s->vga.hw_cursor_x = (val << 3) | (s->vga.sr_index >> 5);
break;
case 0x11:
case 0x31:
case 0x51:
case 0x71: // Graphics Cursor Y
case 0x91:
case 0xb1:
case 0xd1:
case 0xf1: // Graphics Cursor Y
s->vga.sr[0x11] = val;
s->vga.hw_cursor_y = (val << 3) | (s->vga.sr_index >> 5);
break;
case 0x07: // Extended Sequencer Mode
cirrus_update_memory_access(s);
/* fall through */
case 0x08: // EEPROM Control
case 0x09: // Scratch Register 0
case 0x0a: // Scratch Register 1
case 0x0b: // VCLK 0
case 0x0c: // VCLK 1
case 0x0d: // VCLK 2
case 0x0e: // VCLK 3
case 0x0f: // DRAM Control
case 0x13: // Graphics Cursor Pattern Address
case 0x14: // Scratch Register 2
case 0x15: // Scratch Register 3
case 0x16: // Performance Tuning Register
case 0x18: // Signature Generator Control
case 0x19: // Signature Generator Result
case 0x1a: // Signature Generator Result
case 0x1b: // VCLK 0 Denominator & Post
case 0x1c: // VCLK 1 Denominator & Post
case 0x1d: // VCLK 2 Denominator & Post
case 0x1e: // VCLK 3 Denominator & Post
case 0x1f: // BIOS Write Enable and MCLK select
s->vga.sr[s->vga.sr_index] = val;
#ifdef DEBUG_CIRRUS
printf("cirrus: handled outport sr_index %02x, sr_value %02x\n",
s->vga.sr_index, val);
#endif
break;
case 0x12: // Graphics Cursor Attribute
s->vga.sr[0x12] = val;
s->vga.force_shadow = !!(val & CIRRUS_CURSOR_SHOW);
#ifdef DEBUG_CIRRUS
printf("cirrus: cursor ctl SR12=%02x (force shadow: %d)\n",
val, s->vga.force_shadow);
#endif
break;
case 0x17: // Configuration Readback and Extended Control
s->vga.sr[s->vga.sr_index] = (s->vga.sr[s->vga.sr_index] & 0x38)
| (val & 0xc7);
cirrus_update_memory_access(s);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: outport sr_index 0x%02x, sr_value 0x%02x\n",
s->vga.sr_index, val);
break;
}
}
/***************************************
*
* I/O access at 0x3c6
*
***************************************/
static int cirrus_read_hidden_dac(CirrusVGAState * s)
{
if (++s->cirrus_hidden_dac_lockindex == 5) {
s->cirrus_hidden_dac_lockindex = 0;
return s->cirrus_hidden_dac_data;
}
return 0xff;
}
static void cirrus_write_hidden_dac(CirrusVGAState * s, int reg_value)
{
if (s->cirrus_hidden_dac_lockindex == 4) {
s->cirrus_hidden_dac_data = reg_value;
#if defined(DEBUG_CIRRUS)
printf("cirrus: outport hidden DAC, value %02x\n", reg_value);
#endif
}
s->cirrus_hidden_dac_lockindex = 0;
}
/***************************************
*
* I/O access at 0x3c9
*
***************************************/
static int cirrus_vga_read_palette(CirrusVGAState * s)
{
int val;
if ((s->vga.sr[0x12] & CIRRUS_CURSOR_HIDDENPEL)) {
val = s->cirrus_hidden_palette[(s->vga.dac_read_index & 0x0f) * 3 +
s->vga.dac_sub_index];
} else {
val = s->vga.palette[s->vga.dac_read_index * 3 + s->vga.dac_sub_index];
}
if (++s->vga.dac_sub_index == 3) {
s->vga.dac_sub_index = 0;
s->vga.dac_read_index++;
}
return val;
}
static void cirrus_vga_write_palette(CirrusVGAState * s, int reg_value)
{
s->vga.dac_cache[s->vga.dac_sub_index] = reg_value;
if (++s->vga.dac_sub_index == 3) {
if ((s->vga.sr[0x12] & CIRRUS_CURSOR_HIDDENPEL)) {
memcpy(&s->cirrus_hidden_palette[(s->vga.dac_write_index & 0x0f) * 3],
s->vga.dac_cache, 3);
} else {
memcpy(&s->vga.palette[s->vga.dac_write_index * 3], s->vga.dac_cache, 3);
}
/* XXX update cursor */
s->vga.dac_sub_index = 0;
s->vga.dac_write_index++;
}
}
/***************************************
*
* I/O access between 0x3ce-0x3cf
*
***************************************/
static int cirrus_vga_read_gr(CirrusVGAState * s, unsigned reg_index)
{
switch (reg_index) {
case 0x00: // Standard VGA, BGCOLOR 0x000000ff
return s->cirrus_shadow_gr0;
case 0x01: // Standard VGA, FGCOLOR 0x000000ff
return s->cirrus_shadow_gr1;
case 0x02: // Standard VGA
case 0x03: // Standard VGA
case 0x04: // Standard VGA
case 0x06: // Standard VGA
case 0x07: // Standard VGA
case 0x08: // Standard VGA
return s->vga.gr[s->vga.gr_index];
case 0x05: // Standard VGA, Cirrus extended mode
default:
break;
}
if (reg_index < 0x3a) {
return s->vga.gr[reg_index];
} else {
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: inport gr_index 0x%02x\n", reg_index);
return 0xff;
}
}
static void
cirrus_vga_write_gr(CirrusVGAState * s, unsigned reg_index, int reg_value)
{
trace_vga_cirrus_write_gr(reg_index, reg_value);
switch (reg_index) {
case 0x00: // Standard VGA, BGCOLOR 0x000000ff
s->vga.gr[reg_index] = reg_value & gr_mask[reg_index];
s->cirrus_shadow_gr0 = reg_value;
break;
case 0x01: // Standard VGA, FGCOLOR 0x000000ff
s->vga.gr[reg_index] = reg_value & gr_mask[reg_index];
s->cirrus_shadow_gr1 = reg_value;
break;
case 0x02: // Standard VGA
case 0x03: // Standard VGA
case 0x04: // Standard VGA
case 0x06: // Standard VGA
case 0x07: // Standard VGA
case 0x08: // Standard VGA
s->vga.gr[reg_index] = reg_value & gr_mask[reg_index];
break;
case 0x05: // Standard VGA, Cirrus extended mode
s->vga.gr[reg_index] = reg_value & 0x7f;
cirrus_update_memory_access(s);
break;
case 0x09: // bank offset #0
case 0x0A: // bank offset #1
s->vga.gr[reg_index] = reg_value;
cirrus_update_bank_ptr(s, 0);
cirrus_update_bank_ptr(s, 1);
cirrus_update_memory_access(s);
break;
case 0x0B:
s->vga.gr[reg_index] = reg_value;
cirrus_update_bank_ptr(s, 0);
cirrus_update_bank_ptr(s, 1);
cirrus_update_memory_access(s);
break;
case 0x10: // BGCOLOR 0x0000ff00
case 0x11: // FGCOLOR 0x0000ff00
case 0x12: // BGCOLOR 0x00ff0000
case 0x13: // FGCOLOR 0x00ff0000
case 0x14: // BGCOLOR 0xff000000
case 0x15: // FGCOLOR 0xff000000
case 0x20: // BLT WIDTH 0x0000ff
case 0x22: // BLT HEIGHT 0x0000ff
case 0x24: // BLT DEST PITCH 0x0000ff
case 0x26: // BLT SRC PITCH 0x0000ff
case 0x28: // BLT DEST ADDR 0x0000ff
case 0x29: // BLT DEST ADDR 0x00ff00
case 0x2c: // BLT SRC ADDR 0x0000ff
case 0x2d: // BLT SRC ADDR 0x00ff00
case 0x2f: // BLT WRITEMASK
case 0x30: // BLT MODE
case 0x32: // RASTER OP
case 0x33: // BLT MODEEXT
case 0x34: // BLT TRANSPARENT COLOR 0x00ff
case 0x35: // BLT TRANSPARENT COLOR 0xff00
case 0x38: // BLT TRANSPARENT COLOR MASK 0x00ff
case 0x39: // BLT TRANSPARENT COLOR MASK 0xff00
s->vga.gr[reg_index] = reg_value;
break;
case 0x21: // BLT WIDTH 0x001f00
case 0x23: // BLT HEIGHT 0x001f00
case 0x25: // BLT DEST PITCH 0x001f00
case 0x27: // BLT SRC PITCH 0x001f00
s->vga.gr[reg_index] = reg_value & 0x1f;
break;
case 0x2a: // BLT DEST ADDR 0x3f0000
s->vga.gr[reg_index] = reg_value & 0x3f;
/* if auto start mode, starts bit blt now */
if (s->vga.gr[0x31] & CIRRUS_BLT_AUTOSTART) {
cirrus_bitblt_start(s);
}
break;
case 0x2e: // BLT SRC ADDR 0x3f0000
s->vga.gr[reg_index] = reg_value & 0x3f;
break;
case 0x31: // BLT STATUS/START
cirrus_write_bitblt(s, reg_value);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: outport gr_index 0x%02x, gr_value 0x%02x\n",
reg_index, reg_value);
break;
}
}
/***************************************
*
* I/O access between 0x3d4-0x3d5
*
***************************************/
static int cirrus_vga_read_cr(CirrusVGAState * s, unsigned reg_index)
{
switch (reg_index) {
case 0x00: // Standard VGA
case 0x01: // Standard VGA
case 0x02: // Standard VGA
case 0x03: // Standard VGA
case 0x04: // Standard VGA
case 0x05: // Standard VGA
case 0x06: // Standard VGA
case 0x07: // Standard VGA
case 0x08: // Standard VGA
case 0x09: // Standard VGA
case 0x0a: // Standard VGA
case 0x0b: // Standard VGA
case 0x0c: // Standard VGA
case 0x0d: // Standard VGA
case 0x0e: // Standard VGA
case 0x0f: // Standard VGA
case 0x10: // Standard VGA
case 0x11: // Standard VGA
case 0x12: // Standard VGA
case 0x13: // Standard VGA
case 0x14: // Standard VGA
case 0x15: // Standard VGA
case 0x16: // Standard VGA
case 0x17: // Standard VGA
case 0x18: // Standard VGA
return s->vga.cr[s->vga.cr_index];
case 0x24: // Attribute Controller Toggle Readback (R)
return (s->vga.ar_flip_flop << 7);
case 0x19: // Interlace End
case 0x1a: // Miscellaneous Control
case 0x1b: // Extended Display Control
case 0x1c: // Sync Adjust and Genlock
case 0x1d: // Overlay Extended Control
case 0x22: // Graphics Data Latches Readback (R)
case 0x25: // Part Status
case 0x27: // Part ID (R)
return s->vga.cr[s->vga.cr_index];
case 0x26: // Attribute Controller Index Readback (R)
return s->vga.ar_index & 0x3f;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: inport cr_index 0x%02x\n", reg_index);
return 0xff;
}
}
static void cirrus_vga_write_cr(CirrusVGAState * s, int reg_value)
{
switch (s->vga.cr_index) {
case 0x00: // Standard VGA
case 0x01: // Standard VGA
case 0x02: // Standard VGA
case 0x03: // Standard VGA
case 0x04: // Standard VGA
case 0x05: // Standard VGA
case 0x06: // Standard VGA
case 0x07: // Standard VGA
case 0x08: // Standard VGA
case 0x09: // Standard VGA
case 0x0a: // Standard VGA
case 0x0b: // Standard VGA
case 0x0c: // Standard VGA
case 0x0d: // Standard VGA
case 0x0e: // Standard VGA
case 0x0f: // Standard VGA
case 0x10: // Standard VGA
case 0x11: // Standard VGA
case 0x12: // Standard VGA
case 0x13: // Standard VGA
case 0x14: // Standard VGA
case 0x15: // Standard VGA
case 0x16: // Standard VGA
case 0x17: // Standard VGA
case 0x18: // Standard VGA
/* handle CR0-7 protection */
if ((s->vga.cr[0x11] & 0x80) && s->vga.cr_index <= 7) {
/* can always write bit 4 of CR7 */
if (s->vga.cr_index == 7)
s->vga.cr[7] = (s->vga.cr[7] & ~0x10) | (reg_value & 0x10);
return;
}
s->vga.cr[s->vga.cr_index] = reg_value;
switch(s->vga.cr_index) {
case 0x00:
case 0x04:
case 0x05:
case 0x06:
case 0x07:
case 0x11:
case 0x17:
s->vga.update_retrace_info(&s->vga);
break;
}
break;
case 0x19: // Interlace End
case 0x1a: // Miscellaneous Control
case 0x1b: // Extended Display Control
case 0x1c: // Sync Adjust and Genlock
case 0x1d: // Overlay Extended Control
s->vga.cr[s->vga.cr_index] = reg_value;
#ifdef DEBUG_CIRRUS
printf("cirrus: handled outport cr_index %02x, cr_value %02x\n",
s->vga.cr_index, reg_value);
#endif
break;
case 0x22: // Graphics Data Latches Readback (R)
case 0x24: // Attribute Controller Toggle Readback (R)
case 0x26: // Attribute Controller Index Readback (R)
case 0x27: // Part ID (R)
break;
case 0x25: // Part Status
default:
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: outport cr_index 0x%02x, cr_value 0x%02x\n",
s->vga.cr_index, reg_value);
break;
}
}
/***************************************
*
* memory-mapped I/O (bitblt)
*
***************************************/
static uint8_t cirrus_mmio_blt_read(CirrusVGAState * s, unsigned address)
{
int value = 0xff;
switch (address) {
case (CIRRUS_MMIO_BLTBGCOLOR + 0):
value = cirrus_vga_read_gr(s, 0x00);
break;
case (CIRRUS_MMIO_BLTBGCOLOR + 1):
value = cirrus_vga_read_gr(s, 0x10);
break;
case (CIRRUS_MMIO_BLTBGCOLOR + 2):
value = cirrus_vga_read_gr(s, 0x12);
break;
case (CIRRUS_MMIO_BLTBGCOLOR + 3):
value = cirrus_vga_read_gr(s, 0x14);
break;
case (CIRRUS_MMIO_BLTFGCOLOR + 0):
value = cirrus_vga_read_gr(s, 0x01);
break;
case (CIRRUS_MMIO_BLTFGCOLOR + 1):
value = cirrus_vga_read_gr(s, 0x11);
break;
case (CIRRUS_MMIO_BLTFGCOLOR + 2):
value = cirrus_vga_read_gr(s, 0x13);
break;
case (CIRRUS_MMIO_BLTFGCOLOR + 3):
value = cirrus_vga_read_gr(s, 0x15);
break;
case (CIRRUS_MMIO_BLTWIDTH + 0):
value = cirrus_vga_read_gr(s, 0x20);
break;
case (CIRRUS_MMIO_BLTWIDTH + 1):
value = cirrus_vga_read_gr(s, 0x21);
break;
case (CIRRUS_MMIO_BLTHEIGHT + 0):
value = cirrus_vga_read_gr(s, 0x22);
break;
case (CIRRUS_MMIO_BLTHEIGHT + 1):
value = cirrus_vga_read_gr(s, 0x23);
break;
case (CIRRUS_MMIO_BLTDESTPITCH + 0):
value = cirrus_vga_read_gr(s, 0x24);
break;
case (CIRRUS_MMIO_BLTDESTPITCH + 1):
value = cirrus_vga_read_gr(s, 0x25);
break;
case (CIRRUS_MMIO_BLTSRCPITCH + 0):
value = cirrus_vga_read_gr(s, 0x26);
break;
case (CIRRUS_MMIO_BLTSRCPITCH + 1):
value = cirrus_vga_read_gr(s, 0x27);
break;
case (CIRRUS_MMIO_BLTDESTADDR + 0):
value = cirrus_vga_read_gr(s, 0x28);
break;
case (CIRRUS_MMIO_BLTDESTADDR + 1):
value = cirrus_vga_read_gr(s, 0x29);
break;
case (CIRRUS_MMIO_BLTDESTADDR + 2):
value = cirrus_vga_read_gr(s, 0x2a);
break;
case (CIRRUS_MMIO_BLTSRCADDR + 0):
value = cirrus_vga_read_gr(s, 0x2c);
break;
case (CIRRUS_MMIO_BLTSRCADDR + 1):
value = cirrus_vga_read_gr(s, 0x2d);
break;
case (CIRRUS_MMIO_BLTSRCADDR + 2):
value = cirrus_vga_read_gr(s, 0x2e);
break;
case CIRRUS_MMIO_BLTWRITEMASK:
value = cirrus_vga_read_gr(s, 0x2f);
break;
case CIRRUS_MMIO_BLTMODE:
value = cirrus_vga_read_gr(s, 0x30);
break;
case CIRRUS_MMIO_BLTROP:
value = cirrus_vga_read_gr(s, 0x32);
break;
case CIRRUS_MMIO_BLTMODEEXT:
value = cirrus_vga_read_gr(s, 0x33);
break;
case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 0):
value = cirrus_vga_read_gr(s, 0x34);
break;
case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 1):
value = cirrus_vga_read_gr(s, 0x35);
break;
case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 0):
value = cirrus_vga_read_gr(s, 0x38);
break;
case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 1):
value = cirrus_vga_read_gr(s, 0x39);
break;
case CIRRUS_MMIO_BLTSTATUS:
value = cirrus_vga_read_gr(s, 0x31);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: mmio read - address 0x%04x\n", address);
break;
}
trace_vga_cirrus_write_blt(address, value);
return (uint8_t) value;
}
static void cirrus_mmio_blt_write(CirrusVGAState * s, unsigned address,
uint8_t value)
{
trace_vga_cirrus_write_blt(address, value);
switch (address) {
case (CIRRUS_MMIO_BLTBGCOLOR + 0):
cirrus_vga_write_gr(s, 0x00, value);
break;
case (CIRRUS_MMIO_BLTBGCOLOR + 1):
cirrus_vga_write_gr(s, 0x10, value);
break;
case (CIRRUS_MMIO_BLTBGCOLOR + 2):
cirrus_vga_write_gr(s, 0x12, value);
break;
case (CIRRUS_MMIO_BLTBGCOLOR + 3):
cirrus_vga_write_gr(s, 0x14, value);
break;
case (CIRRUS_MMIO_BLTFGCOLOR + 0):
cirrus_vga_write_gr(s, 0x01, value);
break;
case (CIRRUS_MMIO_BLTFGCOLOR + 1):
cirrus_vga_write_gr(s, 0x11, value);
break;
case (CIRRUS_MMIO_BLTFGCOLOR + 2):
cirrus_vga_write_gr(s, 0x13, value);
break;
case (CIRRUS_MMIO_BLTFGCOLOR + 3):
cirrus_vga_write_gr(s, 0x15, value);
break;
case (CIRRUS_MMIO_BLTWIDTH + 0):
cirrus_vga_write_gr(s, 0x20, value);
break;
case (CIRRUS_MMIO_BLTWIDTH + 1):
cirrus_vga_write_gr(s, 0x21, value);
break;
case (CIRRUS_MMIO_BLTHEIGHT + 0):
cirrus_vga_write_gr(s, 0x22, value);
break;
case (CIRRUS_MMIO_BLTHEIGHT + 1):
cirrus_vga_write_gr(s, 0x23, value);
break;
case (CIRRUS_MMIO_BLTDESTPITCH + 0):
cirrus_vga_write_gr(s, 0x24, value);
break;
case (CIRRUS_MMIO_BLTDESTPITCH + 1):
cirrus_vga_write_gr(s, 0x25, value);
break;
case (CIRRUS_MMIO_BLTSRCPITCH + 0):
cirrus_vga_write_gr(s, 0x26, value);
break;
case (CIRRUS_MMIO_BLTSRCPITCH + 1):
cirrus_vga_write_gr(s, 0x27, value);
break;
case (CIRRUS_MMIO_BLTDESTADDR + 0):
cirrus_vga_write_gr(s, 0x28, value);
break;
case (CIRRUS_MMIO_BLTDESTADDR + 1):
cirrus_vga_write_gr(s, 0x29, value);
break;
case (CIRRUS_MMIO_BLTDESTADDR + 2):
cirrus_vga_write_gr(s, 0x2a, value);
break;
case (CIRRUS_MMIO_BLTDESTADDR + 3):
/* ignored */
break;
case (CIRRUS_MMIO_BLTSRCADDR + 0):
cirrus_vga_write_gr(s, 0x2c, value);
break;
case (CIRRUS_MMIO_BLTSRCADDR + 1):
cirrus_vga_write_gr(s, 0x2d, value);
break;
case (CIRRUS_MMIO_BLTSRCADDR + 2):
cirrus_vga_write_gr(s, 0x2e, value);
break;
case CIRRUS_MMIO_BLTWRITEMASK:
cirrus_vga_write_gr(s, 0x2f, value);
break;
case CIRRUS_MMIO_BLTMODE:
cirrus_vga_write_gr(s, 0x30, value);
break;
case CIRRUS_MMIO_BLTROP:
cirrus_vga_write_gr(s, 0x32, value);
break;
case CIRRUS_MMIO_BLTMODEEXT:
cirrus_vga_write_gr(s, 0x33, value);
break;
case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 0):
cirrus_vga_write_gr(s, 0x34, value);
break;
case (CIRRUS_MMIO_BLTTRANSPARENTCOLOR + 1):
cirrus_vga_write_gr(s, 0x35, value);
break;
case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 0):
cirrus_vga_write_gr(s, 0x38, value);
break;
case (CIRRUS_MMIO_BLTTRANSPARENTCOLORMASK + 1):
cirrus_vga_write_gr(s, 0x39, value);
break;
case CIRRUS_MMIO_BLTSTATUS:
cirrus_vga_write_gr(s, 0x31, value);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: mmio write - addr 0x%04x val 0x%02x (ignored)\n",
address, value);
break;
}
}
/***************************************
*
* write mode 4/5
*
***************************************/
static void cirrus_mem_writeb_mode4and5_8bpp(CirrusVGAState * s,
unsigned mode,
unsigned offset,
uint32_t mem_value)
{
int x;
unsigned val = mem_value;
uint8_t *dst;
for (x = 0; x < 8; x++) {
dst = s->vga.vram_ptr + ((offset + x) & s->cirrus_addr_mask);
if (val & 0x80) {
*dst = s->cirrus_shadow_gr1;
} else if (mode == 5) {
*dst = s->cirrus_shadow_gr0;
}
val <<= 1;
}
memory_region_set_dirty(&s->vga.vram, offset, 8);
}
static void cirrus_mem_writeb_mode4and5_16bpp(CirrusVGAState * s,
unsigned mode,
unsigned offset,
uint32_t mem_value)
{
int x;
unsigned val = mem_value;
uint8_t *dst;
for (x = 0; x < 8; x++) {
dst = s->vga.vram_ptr + ((offset + 2 * x) & s->cirrus_addr_mask & ~1);
if (val & 0x80) {
*dst = s->cirrus_shadow_gr1;
*(dst + 1) = s->vga.gr[0x11];
} else if (mode == 5) {
*dst = s->cirrus_shadow_gr0;
*(dst + 1) = s->vga.gr[0x10];
}
val <<= 1;
}
memory_region_set_dirty(&s->vga.vram, offset, 16);
}
/***************************************
*
* memory access between 0xa0000-0xbffff
*
***************************************/
static uint64_t cirrus_vga_mem_read(void *opaque,
hwaddr addr,
uint32_t size)
{
CirrusVGAState *s = opaque;
unsigned bank_index;
unsigned bank_offset;
uint32_t val;
if ((s->vga.sr[0x07] & 0x01) == 0) {
return vga_mem_readb(&s->vga, addr);
}
if (addr < 0x10000) {
/* XXX handle bitblt */
/* video memory */
bank_index = addr >> 15;
bank_offset = addr & 0x7fff;
if (bank_offset < s->cirrus_bank_limit[bank_index]) {
bank_offset += s->cirrus_bank_base[bank_index];
if ((s->vga.gr[0x0B] & 0x14) == 0x14) {
bank_offset <<= 4;
} else if (s->vga.gr[0x0B] & 0x02) {
bank_offset <<= 3;
}
bank_offset &= s->cirrus_addr_mask;
val = *(s->vga.vram_ptr + bank_offset);
} else
val = 0xff;
} else if (addr >= 0x18000 && addr < 0x18100) {
/* memory-mapped I/O */
val = 0xff;
if ((s->vga.sr[0x17] & 0x44) == 0x04) {
val = cirrus_mmio_blt_read(s, addr & 0xff);
}
} else {
val = 0xff;
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: mem_readb 0x" TARGET_FMT_plx "\n", addr);
}
return val;
}
static void cirrus_vga_mem_write(void *opaque,
hwaddr addr,
uint64_t mem_value,
uint32_t size)
{
CirrusVGAState *s = opaque;
unsigned bank_index;
unsigned bank_offset;
unsigned mode;
if ((s->vga.sr[0x07] & 0x01) == 0) {
vga_mem_writeb(&s->vga, addr, mem_value);
return;
}
if (addr < 0x10000) {
if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
/* bitblt */
*s->cirrus_srcptr++ = (uint8_t) mem_value;
if (s->cirrus_srcptr >= s->cirrus_srcptr_end) {
cirrus_bitblt_cputovideo_next(s);
}
} else {
/* video memory */
bank_index = addr >> 15;
bank_offset = addr & 0x7fff;
if (bank_offset < s->cirrus_bank_limit[bank_index]) {
bank_offset += s->cirrus_bank_base[bank_index];
if ((s->vga.gr[0x0B] & 0x14) == 0x14) {
bank_offset <<= 4;
} else if (s->vga.gr[0x0B] & 0x02) {
bank_offset <<= 3;
}
bank_offset &= s->cirrus_addr_mask;
mode = s->vga.gr[0x05] & 0x7;
if (mode < 4 || mode > 5 || ((s->vga.gr[0x0B] & 0x4) == 0)) {
*(s->vga.vram_ptr + bank_offset) = mem_value;
memory_region_set_dirty(&s->vga.vram, bank_offset,
sizeof(mem_value));
} else {
if ((s->vga.gr[0x0B] & 0x14) != 0x14) {
cirrus_mem_writeb_mode4and5_8bpp(s, mode,
bank_offset,
mem_value);
} else {
cirrus_mem_writeb_mode4and5_16bpp(s, mode,
bank_offset,
mem_value);
}
}
}
}
} else if (addr >= 0x18000 && addr < 0x18100) {
/* memory-mapped I/O */
if ((s->vga.sr[0x17] & 0x44) == 0x04) {
cirrus_mmio_blt_write(s, addr & 0xff, mem_value);
}
} else {
qemu_log_mask(LOG_GUEST_ERROR,
"cirrus: mem_writeb 0x" TARGET_FMT_plx " "
"value 0x%02" PRIx64 "\n", addr, mem_value);
}
}
static const MemoryRegionOps cirrus_vga_mem_ops = {
.read = cirrus_vga_mem_read,
.write = cirrus_vga_mem_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
};
/***************************************
*
* hardware cursor
*
***************************************/
static inline void invalidate_cursor1(CirrusVGAState *s)
{
if (s->last_hw_cursor_size) {
vga_invalidate_scanlines(&s->vga,
s->last_hw_cursor_y + s->last_hw_cursor_y_start,
s->last_hw_cursor_y + s->last_hw_cursor_y_end);
}
}
static inline void cirrus_cursor_compute_yrange(CirrusVGAState *s)
{
const uint8_t *src;
uint32_t content;
int y, y_min, y_max;
src = s->vga.vram_ptr + s->real_vram_size - 16 * KiB;
if (s->vga.sr[0x12] & CIRRUS_CURSOR_LARGE) {
src += (s->vga.sr[0x13] & 0x3c) * 256;
y_min = 64;
y_max = -1;
for(y = 0; y < 64; y++) {
content = ((uint32_t *)src)[0] |
((uint32_t *)src)[1] |
((uint32_t *)src)[2] |
((uint32_t *)src)[3];
if (content) {
if (y < y_min)
y_min = y;
if (y > y_max)
y_max = y;
}
src += 16;
}
} else {
src += (s->vga.sr[0x13] & 0x3f) * 256;
y_min = 32;
y_max = -1;
for(y = 0; y < 32; y++) {
content = ((uint32_t *)src)[0] |
((uint32_t *)(src + 128))[0];
if (content) {
if (y < y_min)
y_min = y;
if (y > y_max)
y_max = y;
}
src += 4;
}
}
if (y_min > y_max) {
s->last_hw_cursor_y_start = 0;
s->last_hw_cursor_y_end = 0;
} else {
s->last_hw_cursor_y_start = y_min;
s->last_hw_cursor_y_end = y_max + 1;
}
}
/* NOTE: we do not currently handle the cursor bitmap change, so we
update the cursor only if it moves. */
static void cirrus_cursor_invalidate(VGACommonState *s1)
{
CirrusVGAState *s = container_of(s1, CirrusVGAState, vga);
int size;
if (!(s->vga.sr[0x12] & CIRRUS_CURSOR_SHOW)) {
size = 0;
} else {
if (s->vga.sr[0x12] & CIRRUS_CURSOR_LARGE)
size = 64;
else
size = 32;
}
/* invalidate last cursor and new cursor if any change */
if (s->last_hw_cursor_size != size ||
s->last_hw_cursor_x != s->vga.hw_cursor_x ||
s->last_hw_cursor_y != s->vga.hw_cursor_y) {
invalidate_cursor1(s);
s->last_hw_cursor_size = size;
s->last_hw_cursor_x = s->vga.hw_cursor_x;
s->last_hw_cursor_y = s->vga.hw_cursor_y;
/* compute the real cursor min and max y */
cirrus_cursor_compute_yrange(s);
invalidate_cursor1(s);
}
}
static void vga_draw_cursor_line(uint8_t *d1,
const uint8_t *src1,
int poffset, int w,
unsigned int color0,
unsigned int color1,
unsigned int color_xor)
{
const uint8_t *plane0, *plane1;
int x, b0, b1;
uint8_t *d;
d = d1;
plane0 = src1;
plane1 = src1 + poffset;
for (x = 0; x < w; x++) {
b0 = (plane0[x >> 3] >> (7 - (x & 7))) & 1;
b1 = (plane1[x >> 3] >> (7 - (x & 7))) & 1;
switch (b0 | (b1 << 1)) {
case 0:
break;
case 1:
((uint32_t *)d)[0] ^= color_xor;
break;
case 2:
((uint32_t *)d)[0] = color0;
break;
case 3:
((uint32_t *)d)[0] = color1;
break;
}
d += 4;
}
}
static void cirrus_cursor_draw_line(VGACommonState *s1, uint8_t *d1, int scr_y)
{
CirrusVGAState *s = container_of(s1, CirrusVGAState, vga);
int w, h, x1, x2, poffset;
unsigned int color0, color1;
const uint8_t *palette, *src;
uint32_t content;
if (!(s->vga.sr[0x12] & CIRRUS_CURSOR_SHOW))
return;
/* fast test to see if the cursor intersects with the scan line */
if (s->vga.sr[0x12] & CIRRUS_CURSOR_LARGE) {
h = 64;
} else {
h = 32;
}
if (scr_y < s->vga.hw_cursor_y ||
scr_y >= (s->vga.hw_cursor_y + h)) {
return;
}
src = s->vga.vram_ptr + s->real_vram_size - 16 * KiB;
if (s->vga.sr[0x12] & CIRRUS_CURSOR_LARGE) {
src += (s->vga.sr[0x13] & 0x3c) * 256;
src += (scr_y - s->vga.hw_cursor_y) * 16;
poffset = 8;
content = ((uint32_t *)src)[0] |
((uint32_t *)src)[1] |
((uint32_t *)src)[2] |
((uint32_t *)src)[3];
} else {
src += (s->vga.sr[0x13] & 0x3f) * 256;
src += (scr_y - s->vga.hw_cursor_y) * 4;
poffset = 128;
content = ((uint32_t *)src)[0] |
((uint32_t *)(src + 128))[0];
}
/* if nothing to draw, no need to continue */
if (!content)
return;
w = h;
x1 = s->vga.hw_cursor_x;
if (x1 >= s->vga.last_scr_width)
return;
x2 = s->vga.hw_cursor_x + w;
if (x2 > s->vga.last_scr_width)
x2 = s->vga.last_scr_width;
w = x2 - x1;
palette = s->cirrus_hidden_palette;
color0 = rgb_to_pixel32(c6_to_8(palette[0x0 * 3]),
c6_to_8(palette[0x0 * 3 + 1]),
c6_to_8(palette[0x0 * 3 + 2]));
color1 = rgb_to_pixel32(c6_to_8(palette[0xf * 3]),
c6_to_8(palette[0xf * 3 + 1]),
c6_to_8(palette[0xf * 3 + 2]));
d1 += x1 * 4;
vga_draw_cursor_line(d1, src, poffset, w, color0, color1, 0xffffff);
}
/***************************************
*
* LFB memory access
*
***************************************/
static uint64_t cirrus_linear_read(void *opaque, hwaddr addr,
unsigned size)
{
CirrusVGAState *s = opaque;
uint32_t ret;
addr &= s->cirrus_addr_mask;
if (((s->vga.sr[0x17] & 0x44) == 0x44) &&
((addr & s->linear_mmio_mask) == s->linear_mmio_mask)) {
/* memory-mapped I/O */
ret = cirrus_mmio_blt_read(s, addr & 0xff);
} else if (0) {
/* XXX handle bitblt */
ret = 0xff;
} else {
/* video memory */
if ((s->vga.gr[0x0B] & 0x14) == 0x14) {
addr <<= 4;
} else if (s->vga.gr[0x0B] & 0x02) {
addr <<= 3;
}
addr &= s->cirrus_addr_mask;
ret = *(s->vga.vram_ptr + addr);
}
return ret;
}
static void cirrus_linear_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
CirrusVGAState *s = opaque;
unsigned mode;
addr &= s->cirrus_addr_mask;
if (((s->vga.sr[0x17] & 0x44) == 0x44) &&
((addr & s->linear_mmio_mask) == s->linear_mmio_mask)) {
/* memory-mapped I/O */
cirrus_mmio_blt_write(s, addr & 0xff, val);
} else if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
/* bitblt */
*s->cirrus_srcptr++ = (uint8_t) val;
if (s->cirrus_srcptr >= s->cirrus_srcptr_end) {
cirrus_bitblt_cputovideo_next(s);
}
} else {
/* video memory */
if ((s->vga.gr[0x0B] & 0x14) == 0x14) {
addr <<= 4;
} else if (s->vga.gr[0x0B] & 0x02) {
addr <<= 3;
}
addr &= s->cirrus_addr_mask;
mode = s->vga.gr[0x05] & 0x7;
if (mode < 4 || mode > 5 || ((s->vga.gr[0x0B] & 0x4) == 0)) {
*(s->vga.vram_ptr + addr) = (uint8_t) val;
memory_region_set_dirty(&s->vga.vram, addr, 1);
} else {
if ((s->vga.gr[0x0B] & 0x14) != 0x14) {
cirrus_mem_writeb_mode4and5_8bpp(s, mode, addr, val);
} else {
cirrus_mem_writeb_mode4and5_16bpp(s, mode, addr, val);
}
}
}
}
/***************************************
*
* system to screen memory access
*
***************************************/
static uint64_t cirrus_linear_bitblt_read(void *opaque,
hwaddr addr,
unsigned size)
{
CirrusVGAState *s = opaque;
/* XXX handle bitblt */
(void)s;
qemu_log_mask(LOG_UNIMP,
"cirrus: linear bitblt is not implemented\n");
return 0xff;
}
static void cirrus_linear_bitblt_write(void *opaque,
hwaddr addr,
uint64_t val,
unsigned size)
{
CirrusVGAState *s = opaque;
if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
/* bitblt */
*s->cirrus_srcptr++ = (uint8_t) val;
if (s->cirrus_srcptr >= s->cirrus_srcptr_end) {
cirrus_bitblt_cputovideo_next(s);
}
}
}
static const MemoryRegionOps cirrus_linear_bitblt_io_ops = {
.read = cirrus_linear_bitblt_read,
.write = cirrus_linear_bitblt_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
};
static void map_linear_vram_bank(CirrusVGAState *s, unsigned bank)
{
MemoryRegion *mr = &s->cirrus_bank[bank];
bool enabled = !(s->cirrus_srcptr != s->cirrus_srcptr_end)
&& !((s->vga.sr[0x07] & 0x01) == 0)
&& !((s->vga.gr[0x0B] & 0x14) == 0x14)
&& !(s->vga.gr[0x0B] & 0x02);
memory_region_set_enabled(mr, enabled);
memory_region_set_alias_offset(mr, s->cirrus_bank_base[bank]);
}
static void map_linear_vram(CirrusVGAState *s)
{
if (s->bustype == CIRRUS_BUSTYPE_PCI && !s->linear_vram) {
s->linear_vram = true;
memory_region_add_subregion_overlap(&s->pci_bar, 0, &s->vga.vram, 1);
}
map_linear_vram_bank(s, 0);
map_linear_vram_bank(s, 1);
}
static void unmap_linear_vram(CirrusVGAState *s)
{
if (s->bustype == CIRRUS_BUSTYPE_PCI && s->linear_vram) {
s->linear_vram = false;
memory_region_del_subregion(&s->pci_bar, &s->vga.vram);
}
memory_region_set_enabled(&s->cirrus_bank[0], false);
memory_region_set_enabled(&s->cirrus_bank[1], false);
}
/* Compute the memory access functions */
static void cirrus_update_memory_access(CirrusVGAState *s)
{
unsigned mode;
memory_region_transaction_begin();
if ((s->vga.sr[0x17] & 0x44) == 0x44) {
goto generic_io;
} else if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
goto generic_io;
} else {
if ((s->vga.gr[0x0B] & 0x14) == 0x14) {
goto generic_io;
} else if (s->vga.gr[0x0B] & 0x02) {
goto generic_io;
}
mode = s->vga.gr[0x05] & 0x7;
if (mode < 4 || mode > 5 || ((s->vga.gr[0x0B] & 0x4) == 0)) {
map_linear_vram(s);
} else {
generic_io:
unmap_linear_vram(s);
}
}
memory_region_transaction_commit();
}
/* I/O ports */
static uint64_t cirrus_vga_ioport_read(void *opaque, hwaddr addr,
unsigned size)
{
CirrusVGAState *c = opaque;
VGACommonState *s = &c->vga;
int val, index;
addr += 0x3b0;
if (vga_ioport_invalid(s, addr)) {
val = 0xff;
} else {
switch (addr) {
case 0x3c0:
if (s->ar_flip_flop == 0) {
val = s->ar_index;
} else {
val = 0;
}
break;
case 0x3c1:
index = s->ar_index & 0x1f;
if (index < 21)
val = s->ar[index];
else
val = 0;
break;
case 0x3c2:
val = s->st00;
break;
case 0x3c4:
val = s->sr_index;
break;
case 0x3c5:
val = cirrus_vga_read_sr(c);
break;
break;
case 0x3c6:
val = cirrus_read_hidden_dac(c);
break;
case 0x3c7:
val = s->dac_state;
break;
case 0x3c8:
val = s->dac_write_index;
c->cirrus_hidden_dac_lockindex = 0;
break;
case 0x3c9:
val = cirrus_vga_read_palette(c);
break;
case 0x3ca:
val = s->fcr;
break;
case 0x3cc:
val = s->msr;
break;
case 0x3ce:
val = s->gr_index;
break;
case 0x3cf:
val = cirrus_vga_read_gr(c, s->gr_index);
break;
case 0x3b4:
case 0x3d4:
val = s->cr_index;
break;
case 0x3b5:
case 0x3d5:
val = cirrus_vga_read_cr(c, s->cr_index);
break;
case 0x3ba:
case 0x3da:
/* just toggle to fool polling */
val = s->st01 = s->retrace(s);
s->ar_flip_flop = 0;
break;
default:
val = 0x00;
break;
}
}
trace_vga_cirrus_read_io(addr, val);
return val;
}
static void cirrus_vga_ioport_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
CirrusVGAState *c = opaque;
VGACommonState *s = &c->vga;
int index;
addr += 0x3b0;
/* check port range access depending on color/monochrome mode */
if (vga_ioport_invalid(s, addr)) {
return;
}
trace_vga_cirrus_write_io(addr, val);
switch (addr) {
case 0x3c0:
if (s->ar_flip_flop == 0) {
val &= 0x3f;
s->ar_index = val;
} else {
index = s->ar_index & 0x1f;
switch (index) {
case 0x00 ... 0x0f:
s->ar[index] = val & 0x3f;
break;
case 0x10:
s->ar[index] = val & ~0x10;
break;
case 0x11:
s->ar[index] = val;
break;
case 0x12:
s->ar[index] = val & ~0xc0;
break;
case 0x13:
s->ar[index] = val & ~0xf0;
break;
case 0x14:
s->ar[index] = val & ~0xf0;
break;
default:
break;
}
}
s->ar_flip_flop ^= 1;
break;
case 0x3c2:
s->msr = val & ~0x10;
s->update_retrace_info(s);
break;
case 0x3c4:
s->sr_index = val;
break;
case 0x3c5:
cirrus_vga_write_sr(c, val);
break;
case 0x3c6:
cirrus_write_hidden_dac(c, val);
break;
case 0x3c7:
s->dac_read_index = val;
s->dac_sub_index = 0;
s->dac_state = 3;
break;
case 0x3c8:
s->dac_write_index = val;
s->dac_sub_index = 0;
s->dac_state = 0;
break;
case 0x3c9:
cirrus_vga_write_palette(c, val);
break;
case 0x3ce:
s->gr_index = val;
break;
case 0x3cf:
cirrus_vga_write_gr(c, s->gr_index, val);
break;
case 0x3b4:
case 0x3d4:
s->cr_index = val;
break;
case 0x3b5:
case 0x3d5:
cirrus_vga_write_cr(c, val);
break;
case 0x3ba:
case 0x3da:
s->fcr = val & 0x10;
break;
}
}
/***************************************
*
* memory-mapped I/O access
*
***************************************/
static uint64_t cirrus_mmio_read(void *opaque, hwaddr addr,
unsigned size)
{
CirrusVGAState *s = opaque;
if (addr >= 0x100) {
return cirrus_mmio_blt_read(s, addr - 0x100);
} else {
return cirrus_vga_ioport_read(s, addr + 0x10, size);
}
}
static void cirrus_mmio_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
CirrusVGAState *s = opaque;
if (addr >= 0x100) {
cirrus_mmio_blt_write(s, addr - 0x100, val);
} else {
cirrus_vga_ioport_write(s, addr + 0x10, val, size);
}
}
static const MemoryRegionOps cirrus_mmio_io_ops = {
.read = cirrus_mmio_read,
.write = cirrus_mmio_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
};
/* load/save state */
static int cirrus_post_load(void *opaque, int version_id)
{
CirrusVGAState *s = opaque;
s->vga.gr[0x00] = s->cirrus_shadow_gr0 & 0x0f;
s->vga.gr[0x01] = s->cirrus_shadow_gr1 & 0x0f;
cirrus_update_bank_ptr(s, 0);
cirrus_update_bank_ptr(s, 1);
cirrus_update_memory_access(s);
/* force refresh */
s->vga.graphic_mode = -1;
return 0;
}
const VMStateDescription vmstate_cirrus_vga = {
.name = "cirrus_vga",
.version_id = 2,
.minimum_version_id = 1,
.post_load = cirrus_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT32(vga.latch, CirrusVGAState),
VMSTATE_UINT8(vga.sr_index, CirrusVGAState),
VMSTATE_BUFFER(vga.sr, CirrusVGAState),
VMSTATE_UINT8(vga.gr_index, CirrusVGAState),
VMSTATE_UINT8(cirrus_shadow_gr0, CirrusVGAState),
VMSTATE_UINT8(cirrus_shadow_gr1, CirrusVGAState),
VMSTATE_BUFFER_START_MIDDLE(vga.gr, CirrusVGAState, 2),
VMSTATE_UINT8(vga.ar_index, CirrusVGAState),
VMSTATE_BUFFER(vga.ar, CirrusVGAState),
VMSTATE_INT32(vga.ar_flip_flop, CirrusVGAState),
VMSTATE_UINT8(vga.cr_index, CirrusVGAState),
VMSTATE_BUFFER(vga.cr, CirrusVGAState),
VMSTATE_UINT8(vga.msr, CirrusVGAState),
VMSTATE_UINT8(vga.fcr, CirrusVGAState),
VMSTATE_UINT8(vga.st00, CirrusVGAState),
VMSTATE_UINT8(vga.st01, CirrusVGAState),
VMSTATE_UINT8(vga.dac_state, CirrusVGAState),
VMSTATE_UINT8(vga.dac_sub_index, CirrusVGAState),
VMSTATE_UINT8(vga.dac_read_index, CirrusVGAState),
VMSTATE_UINT8(vga.dac_write_index, CirrusVGAState),
VMSTATE_BUFFER(vga.dac_cache, CirrusVGAState),
VMSTATE_BUFFER(vga.palette, CirrusVGAState),
VMSTATE_INT32(vga.bank_offset, CirrusVGAState),
VMSTATE_UINT8(cirrus_hidden_dac_lockindex, CirrusVGAState),
VMSTATE_UINT8(cirrus_hidden_dac_data, CirrusVGAState),
VMSTATE_UINT32(vga.hw_cursor_x, CirrusVGAState),
VMSTATE_UINT32(vga.hw_cursor_y, CirrusVGAState),
/* XXX: we do not save the bitblt state - we assume we do not save
the state when the blitter is active */
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_pci_cirrus_vga = {
.name = "cirrus_vga",
.version_id = 2,
.minimum_version_id = 2,
.fields = (VMStateField[]) {
VMSTATE_PCI_DEVICE(dev, PCICirrusVGAState),
VMSTATE_STRUCT(cirrus_vga, PCICirrusVGAState, 0,
vmstate_cirrus_vga, CirrusVGAState),
VMSTATE_END_OF_LIST()
}
};
/***************************************
*
* initialize
*
***************************************/
static void cirrus_reset(void *opaque)
{
CirrusVGAState *s = opaque;
vga_common_reset(&s->vga);
unmap_linear_vram(s);
s->vga.sr[0x06] = 0x0f;
if (s->device_id == CIRRUS_ID_CLGD5446) {
/* 4MB 64 bit memory config, always PCI */
s->vga.sr[0x1F] = 0x2d; // MemClock
s->vga.gr[0x18] = 0x0f; // fastest memory configuration
s->vga.sr[0x0f] = 0x98;
s->vga.sr[0x17] = 0x20;
s->vga.sr[0x15] = 0x04; /* memory size, 3=2MB, 4=4MB */
} else {
s->vga.sr[0x1F] = 0x22; // MemClock
s->vga.sr[0x0F] = CIRRUS_MEMSIZE_2M;
s->vga.sr[0x17] = s->bustype;
s->vga.sr[0x15] = 0x03; /* memory size, 3=2MB, 4=4MB */
}
s->vga.cr[0x27] = s->device_id;
s->cirrus_hidden_dac_lockindex = 5;
s->cirrus_hidden_dac_data = 0;
}
static const MemoryRegionOps cirrus_linear_io_ops = {
.read = cirrus_linear_read,
.write = cirrus_linear_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
};
static const MemoryRegionOps cirrus_vga_io_ops = {
.read = cirrus_vga_ioport_read,
.write = cirrus_vga_ioport_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
};
void cirrus_init_common(CirrusVGAState *s, Object *owner,
int device_id, int is_pci,
MemoryRegion *system_memory, MemoryRegion *system_io)
{
int i;
static int inited;
if (!inited) {
inited = 1;
for(i = 0;i < 256; i++)
rop_to_index[i] = CIRRUS_ROP_NOP_INDEX; /* nop rop */
rop_to_index[CIRRUS_ROP_0] = 0;
rop_to_index[CIRRUS_ROP_SRC_AND_DST] = 1;
rop_to_index[CIRRUS_ROP_NOP] = 2;
rop_to_index[CIRRUS_ROP_SRC_AND_NOTDST] = 3;
rop_to_index[CIRRUS_ROP_NOTDST] = 4;
rop_to_index[CIRRUS_ROP_SRC] = 5;
rop_to_index[CIRRUS_ROP_1] = 6;
rop_to_index[CIRRUS_ROP_NOTSRC_AND_DST] = 7;
rop_to_index[CIRRUS_ROP_SRC_XOR_DST] = 8;
rop_to_index[CIRRUS_ROP_SRC_OR_DST] = 9;
rop_to_index[CIRRUS_ROP_NOTSRC_OR_NOTDST] = 10;
rop_to_index[CIRRUS_ROP_SRC_NOTXOR_DST] = 11;
rop_to_index[CIRRUS_ROP_SRC_OR_NOTDST] = 12;
rop_to_index[CIRRUS_ROP_NOTSRC] = 13;
rop_to_index[CIRRUS_ROP_NOTSRC_OR_DST] = 14;
rop_to_index[CIRRUS_ROP_NOTSRC_AND_NOTDST] = 15;
s->device_id = device_id;
if (is_pci)
s->bustype = CIRRUS_BUSTYPE_PCI;
else
s->bustype = CIRRUS_BUSTYPE_ISA;
}
/* Register ioport 0x3b0 - 0x3df */
memory_region_init_io(&s->cirrus_vga_io, owner, &cirrus_vga_io_ops, s,
"cirrus-io", 0x30);
memory_region_set_flush_coalesced(&s->cirrus_vga_io);
memory_region_add_subregion(system_io, 0x3b0, &s->cirrus_vga_io);
memory_region_init(&s->low_mem_container, owner,
"cirrus-lowmem-container",
0x20000);
memory_region_init_io(&s->low_mem, owner, &cirrus_vga_mem_ops, s,
"cirrus-low-memory", 0x20000);
memory_region_add_subregion(&s->low_mem_container, 0, &s->low_mem);
for (i = 0; i < 2; ++i) {
static const char *names[] = { "vga.bank0", "vga.bank1" };
MemoryRegion *bank = &s->cirrus_bank[i];
memory_region_init_alias(bank, owner, names[i], &s->vga.vram,
0, 0x8000);
memory_region_set_enabled(bank, false);
memory_region_add_subregion_overlap(&s->low_mem_container, i * 0x8000,
bank, 1);
}
memory_region_add_subregion_overlap(system_memory,
0x000a0000,
&s->low_mem_container,
1);
memory_region_set_coalescing(&s->low_mem);
/* I/O handler for LFB */
memory_region_init_io(&s->cirrus_linear_io, owner, &cirrus_linear_io_ops, s,
"cirrus-linear-io", s->vga.vram_size_mb * MiB);
memory_region_set_flush_coalesced(&s->cirrus_linear_io);
/* I/O handler for LFB */
memory_region_init_io(&s->cirrus_linear_bitblt_io, owner,
&cirrus_linear_bitblt_io_ops,
s,
"cirrus-bitblt-mmio",
0x400000);
memory_region_set_flush_coalesced(&s->cirrus_linear_bitblt_io);
/* I/O handler for memory-mapped I/O */
memory_region_init_io(&s->cirrus_mmio_io, owner, &cirrus_mmio_io_ops, s,
"cirrus-mmio", CIRRUS_PNPMMIO_SIZE);
memory_region_set_flush_coalesced(&s->cirrus_mmio_io);
s->real_vram_size =
(s->device_id == CIRRUS_ID_CLGD5446) ? 4 * MiB : 2 * MiB;
/* XXX: s->vga.vram_size must be a power of two */
s->cirrus_addr_mask = s->real_vram_size - 1;
s->linear_mmio_mask = s->real_vram_size - 256;
s->vga.get_bpp = cirrus_get_bpp;
s->vga.get_offsets = cirrus_get_offsets;
s->vga.get_resolution = cirrus_get_resolution;
s->vga.cursor_invalidate = cirrus_cursor_invalidate;
s->vga.cursor_draw_line = cirrus_cursor_draw_line;
qemu_register_reset(cirrus_reset, s);
}
/***************************************
*
* PCI bus support
*
***************************************/
static void pci_cirrus_vga_realize(PCIDevice *dev, Error **errp)
{
PCICirrusVGAState *d = PCI_CIRRUS_VGA(dev);
CirrusVGAState *s = &d->cirrus_vga;
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
int16_t device_id = pc->device_id;
/*
* Follow real hardware, cirrus card emulated has 4 MB video memory.
* Also accept 8 MB/16 MB for backward compatibility.
*/
if (s->vga.vram_size_mb != 4 && s->vga.vram_size_mb != 8 &&
s->vga.vram_size_mb != 16) {
error_setg(errp, "Invalid cirrus_vga ram size '%u'",
s->vga.vram_size_mb);
return;
}
/* setup VGA */
if (!vga_common_init(&s->vga, OBJECT(dev), errp)) {
return;
}
cirrus_init_common(s, OBJECT(dev), device_id, 1, pci_address_space(dev),
pci_address_space_io(dev));
s->vga.con = graphic_console_init(DEVICE(dev), 0, s->vga.hw_ops, &s->vga);
/* setup PCI */
memory_region_init(&s->pci_bar, OBJECT(dev), "cirrus-pci-bar0", 0x2000000);
/* XXX: add byte swapping apertures */
memory_region_add_subregion(&s->pci_bar, 0, &s->cirrus_linear_io);
memory_region_add_subregion(&s->pci_bar, 0x1000000,
&s->cirrus_linear_bitblt_io);
/* setup memory space */
/* memory #0 LFB */
/* memory #1 memory-mapped I/O */
/* XXX: s->vga.vram_size must be a power of two */
pci_register_bar(&d->dev, 0, PCI_BASE_ADDRESS_MEM_PREFETCH, &s->pci_bar);
if (device_id == CIRRUS_ID_CLGD5446) {
pci_register_bar(&d->dev, 1, 0, &s->cirrus_mmio_io);
}
}
static Property pci_vga_cirrus_properties[] = {
DEFINE_PROP_UINT32("vgamem_mb", struct PCICirrusVGAState,
cirrus_vga.vga.vram_size_mb, 4),
DEFINE_PROP_BOOL("blitter", struct PCICirrusVGAState,
cirrus_vga.enable_blitter, true),
DEFINE_PROP_BOOL("global-vmstate", struct PCICirrusVGAState,
cirrus_vga.vga.global_vmstate, false),
DEFINE_PROP_END_OF_LIST(),
};
static void cirrus_vga_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->realize = pci_cirrus_vga_realize;
k->romfile = VGABIOS_CIRRUS_FILENAME;
k->vendor_id = PCI_VENDOR_ID_CIRRUS;
k->device_id = CIRRUS_ID_CLGD5446;
k->class_id = PCI_CLASS_DISPLAY_VGA;
set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
dc->desc = "Cirrus CLGD 54xx VGA";
dc->vmsd = &vmstate_pci_cirrus_vga;
device_class_set_props(dc, pci_vga_cirrus_properties);
dc->hotpluggable = false;
}
static const TypeInfo cirrus_vga_info = {
.name = TYPE_PCI_CIRRUS_VGA,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PCICirrusVGAState),
.class_init = cirrus_vga_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static void cirrus_vga_register_types(void)
{
type_register_static(&cirrus_vga_info);
}
type_init(cirrus_vga_register_types)
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