ref: 909323e92a4e694bff5908e500d8655ac1bbd932
dir: /sys/src/9/sgi/screen.c/
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#include "../port/error.h"
#define Image IMAGE
#include <draw.h>
#include <memdraw.h>
#include <cursor.h>
#include "screen.h"
/*
* Register constant below from XFree86 driver.
*/
#define DM1_PLANES 0x00000007
#define DM1_NOPLANES 0x00000000
#define DM1_RGBPLANES 0x00000001
#define DM1_RGBAPLANES 0x00000002
#define DM1_OLAYPLANES 0x00000004
#define DM1_PUPPLANES 0x00000005
#define DM1_CIDPLANES 0x00000006
#define NPORT_DMODE1_DDMASK 0x00000018
#define NPORT_DMODE1_DD4 0x00000000
#define NPORT_DMODE1_DD8 0x00000008
#define NPORT_DMODE1_DD12 0x00000010
#define NPORT_DMODE1_DD24 0x00000018
#define NPORT_DMODE1_DSRC 0x00000020
#define NPORT_DMODE1_YFLIP 0x00000040
#define NPORT_DMODE1_RWPCKD 0x00000080
#define NPORT_DMODE1_HDMASK 0x00000300
#define NPORT_DMODE1_HD4 0x00000000
#define NPORT_DMODE1_HD8 0x00000100
#define NPORT_DMODE1_HD12 0x00000200
#define NPORT_DMODE1_HD32 0x00000300
#define NPORT_DMODE1_RWDBL 0x00000400
#define NPORT_DMODE1_ESWAP 0x00000800 /* Endian swap */
#define NPORT_DMODE1_CCMASK 0x00007000
#define NPORT_DMODE1_CCLT 0x00001000
#define NPORT_DMODE1_CCEQ 0x00002000
#define NPORT_DMODE1_CCGT 0x00004000
#define NPORT_DMODE1_RGBMD 0x00008000
#define NPORT_DMODE1_DENAB 0x00010000 /* Dither enable */
#define NPORT_DMODE1_FCLR 0x00020000 /* Fast clear */
#define NPORT_DMODE1_BENAB 0x00040000 /* Blend enable */
#define NPORT_DMODE1_SFMASK 0x00380000
#define NPORT_DMODE1_SF0 0x00000000
#define NPORT_DMODE1_SF1 0x00080000
#define NPORT_DMODE1_SFDC 0x00100000
#define NPORT_DMODE1_SFMDC 0x00180000
#define NPORT_DMODE1_SFSA 0x00200000
#define NPORT_DMODE1_SFMSA 0x00280000
#define NPORT_DMODE1_DFMASK 0x01c00000
#define NPORT_DMODE1_DF0 0x00000000
#define NPORT_DMODE1_DF1 0x00400000
#define NPORT_DMODE1_DFSC 0x00800000
#define NPORT_DMODE1_DFMSC 0x00c00000
#define NPORT_DMODE1_DFSA 0x01000000
#define NPORT_DMODE1_DFMSA 0x01400000
#define NPORT_DMODE1_BBENAB 0x02000000 /* Back blend enable */
#define NPORT_DMODE1_PFENAB 0x04000000 /* Pre-fetch enable */
#define NPORT_DMODE1_ABLEND 0x08000000 /* Alpha blend */
#define NPORT_DMODE1_LOMASK 0xf0000000
#define NPORT_DMODE1_LOZERO 0x00000000
#define NPORT_DMODE1_LOAND 0x10000000
#define NPORT_DMODE1_LOANDR 0x20000000
#define NPORT_DMODE1_LOSRC 0x30000000
#define NPORT_DMODE1_LOANDI 0x40000000
#define NPORT_DMODE1_LODST 0x50000000
#define NPORT_DMODE1_LOXOR 0x60000000
#define NPORT_DMODE1_LOOR 0x70000000
#define NPORT_DMODE1_LONOR 0x80000000
#define NPORT_DMODE1_LOXNOR 0x90000000
#define NPORT_DMODE1_LONDST 0xa0000000
#define NPORT_DMODE1_LOORR 0xb0000000
#define NPORT_DMODE1_LONSRC 0xc0000000
#define NPORT_DMODE1_LOORI 0xd0000000
#define NPORT_DMODE1_LONAND 0xe0000000
#define NPORT_DMODE1_LOONE 0xf0000000
/* These bits define the graphics opcode being performed. */
#define NPORT_DMODE0_OPMASK 0x00000003 /* Opcode mask */
#define NPORT_DMODE0_NOP 0x00000000 /* No operation */
#define NPORT_DMODE0_RD 0x00000001 /* Read operation */
#define NPORT_DMODE0_DRAW 0x00000002 /* Draw operation */
#define NPORT_DMODE0_S2S 0x00000003 /* Screen to screen operation */
/* The following decide what addressing mode(s) are to be used */
#define NPORT_DMODE0_AMMASK 0x0000001c /* Address mode mask */
#define NPORT_DMODE0_SPAN 0x00000000 /* Spanning address mode */
#define NPORT_DMODE0_BLOCK 0x00000004 /* Block address mode */
#define NPORT_DMODE0_ILINE 0x00000008 /* Iline address mode */
#define NPORT_DMODE0_FLINE 0x0000000c /* Fline address mode */
#define NPORT_DMODE0_ALINE 0x00000010 /* Aline address mode */
#define NPORT_DMODE0_TLINE 0x00000014 /* Tline address mode */
#define NPORT_DMODE0_BLINE 0x00000018 /* Bline address mode */
/* And now some misc. operation control bits. */
#define NPORT_DMODE0_DOSETUP 0x00000020
#define NPORT_DMODE0_CHOST 0x00000040
#define NPORT_DMODE0_AHOST 0x00000080
#define NPORT_DMODE0_STOPX 0x00000100
#define NPORT_DMODE0_STOPY 0x00000200
#define NPORT_DMODE0_SK1ST 0x00000400
#define NPORT_DMODE0_SKLST 0x00000800
#define NPORT_DMODE0_ZPENAB 0x00001000
#define NPORT_DMODE0_LISPENAB 0x00002000
#define NPORT_DMODE0_LISLST 0x00004000
#define NPORT_DMODE0_L32 0x00008000
#define NPORT_DMODE0_ZOPQ 0x00010000
#define NPORT_DMODE0_LISOPQ 0x00020000
#define NPORT_DMODE0_SHADE 0x00040000
#define NPORT_DMODE0_LRONLY 0x00080000
#define NPORT_DMODE0_XYOFF 0x00100000
#define NPORT_DMODE0_CLAMP 0x00200000
#define NPORT_DMODE0_ENDPF 0x00400000
#define NPORT_DMODE0_YSTR 0x00800000
#define NPORT_LSMODE_REPMASK 0x0000ff00
#define NPORT_LSMODE_LENMASK 0x0f000000
#define NPORT_DMODE_WMASK 0x00000003 /* dataWidth of data being transfered */
#define NPORT_DMODE_W4 0x00000000
#define NPORT_DMODE_W1 0x00000001
#define NPORT_DMODE_W2 0x00000002
#define NPORT_DMODE_W3 0x00000003
#define NPORT_DMODE_EDPACK 0x00000004
#define NPORT_DMODE_ECINC 0x00000008
#define NPORT_DMODE_CMASK 0x00000070
#define NPORT_DMODE_AMASK 0x00000780
#define NPORT_DMODE_AVC2 0x00000000
#define NPORT_DMODE_ACMALL 0x00000080
#define NPORT_DMODE_ACM0 0x00000100
#define NPORT_DMODE_ACM1 0x00000180
#define NPORT_DMODE_AXMALL 0x00000200
#define NPORT_DMODE_AXM0 0x00000280
#define NPORT_DMODE_AXM1 0x00000300
#define NPORT_DMODE_ABT 0x00000380
#define NPORT_DMODE_AVCC1 0x00000400
#define NPORT_DMODE_AVAB1 0x00000480
#define NPORT_DMODE_ALG3V0 0x00000500
#define NPORT_DMODE_A1562 0x00000580
#define NPORT_DMODE_ESACK 0x00000800
#define NPORT_DMODE_EASACK 0x00001000
#define NPORT_DMODE_CWMASK 0x0003e000
#define NPORT_DMODE_CHMASK 0x007c0000
#define NPORT_DMODE_CSMASK 0x0f800000
#define NPORT_DMODE_SENDIAN 0x10000000
#define NPORT_SMASKXOFF 4096
#define NPORT_SMASKYOFF 4096
#define NPORT_CMODE_SM0 0x00000001
#define NPORT_CMODE_SM1 0x00000002
#define NPORT_CMODE_SM2 0x00000004
#define NPORT_CMODE_SM3 0x00000008
#define NPORT_CMODE_SM4 0x00000010
#define NPORT_CMODE_CMSK 0x00001e00
#define NPORT_CFG_G32MD 0x00000001
#define NPORT_CFG_BWIDTH 0x00000002
#define NPORT_CFG_ERCVR 0x00000004
#define NPORT_CFG_BDMSK 0x00000078
#define NPORT_CFG_BFAINT 0x00000080
#define NPORT_CFG_GDMSK 0x00001f00
#define NPORT_CFG_GD0 0x00000100
#define NPORT_CFG_GD1 0x00000200
#define NPORT_CFG_GD2 0x00000400
#define NPORT_CFG_GD3 0x00000800
#define NPORT_CFG_GD4 0x00001000
#define NPORT_CFG_GFAINT 0x00002000
#define NPORT_CFG_TOMSK 0x0001C000
#define NPORT_CFG_VRMSK 0x000E0000
#define NPORT_CFG_FBTYP 0x00100000
#define NPORT_STAT_VERS 0x00000007
#define NPORT_STAT_GBUSY 0x00000008
#define NPORT_STAT_BBUSY 0x00000010
#define NPORT_STAT_VRINT 0x00000020
#define NPORT_STAT_VIDINT 0x00000040
#define NPORT_STAT_GLMSK 0x00001f80
#define NPORT_STAT_BLMSK 0x0007e000
#define NPORT_STAT_BFIRQ 0x00080000
#define NPORT_STAT_GFIRQ 0x00100000
/* Reading/writing VC2 registers. */
#define VC2_REGADDR_INDEX 0x00000000
#define VC2_REGADDR_IREG 0x00000010
#define VC2_REGADDR_RAM 0x00000030
#define VC2_PROTOCOL (NPORT_DMODE_EASACK | 0x00800000 | 0x00040000)
#define VC2_VLINET_ADDR 0x000
#define VC2_VFRAMET_ADDR 0x400
#define VC2_CGLYPH_ADDR 0x500
/* Now the Indexed registers of the VC2. */
#define VC2_IREG_VENTRY 0x00
#define VC2_IREG_CENTRY 0x01
#define VC2_IREG_CURSX 0x02
#define VC2_IREG_CURSY 0x03
#define VC2_IREG_CCURSX 0x04
#define VC2_IREG_DENTRY 0x05
#define VC2_IREG_SLEN 0x06
#define VC2_IREG_RADDR 0x07
#define VC2_IREG_VFPTR 0x08
#define VC2_IREG_VLSPTR 0x09
#define VC2_IREG_VLIR 0x0a
#define VC2_IREG_VLCTR 0x0b
#define VC2_IREG_CTPTR 0x0c
#define VC2_IREG_WCURSY 0x0d
#define VC2_IREG_DFPTR 0x0e
#define VC2_IREG_DLTPTR 0x0f
#define VC2_IREG_CONTROL 0x10
#define VC2_IREG_CONFIG 0x20
/* VC2 Control register bits */
#define VC2_CTRL_EVIRQ 0x0001
#define VC2_CTRL_EDISP 0x0002
#define VC2_CTRL_EVIDEO 0x0004
#define VC2_CTRL_EDIDS 0x0008
#define VC2_CTRL_ECURS 0x0010
#define VC2_CTRL_EGSYNC 0x0020
#define VC2_CTRL_EILACE 0x0040
#define VC2_CTRL_ECDISP 0x0080
#define VC2_CTRL_ECCURS 0x0100
#define VC2_CTRL_ECG64 0x0200
#define VC2_CTRL_GLSEL 0x0400
/* Controlling the color map on Newport. */
#define NCMAP_REGADDR_AREG 0x00000000
#define NCMAP_REGADDR_ALO 0x00000000 /* address register low */
#define NCMAP_REGADDR_AHI 0x00000010 /* address register high */
#define NCMAP_REGADDR_PBUF 0x00000020 /* color palette buffer */
#define NCMAP_REGADDR_CREG 0x00000030 /* command register */
#define NCMAP_REGADDR_SREG 0x00000040 /* color buffer register */
#define NCMAP_REGADDR_RREG 0x00000060 /* revision register */
#define NCMAP_PROTOCOL (0x00008000 | 0x00040000 | 0x00800000)
/*
* DCBMODE register defines:
*/
/* Widht of the data being transfered for each DCBDATA[01] word */
#define DCB_DATAWIDTH_4 0x0
#define DCB_DATAWIDTH_1 0x1
#define DCB_DATAWIDTH_2 0x2
#define DCB_DATAWIDTH_3 0x3
/* If set, all of DCBDATA will be moved, otherwise only DATAWIDTH bytes */
#define DCB_ENDATAPACK (1 << 2)
/* Enables DCBCRS auto increment after each DCB transfer */
#define DCB_ENCRSINC (1 << 3)
/* shift for accessing the control register select address (DBCCRS, 3 bits) */
#define DCB_CRS_SHIFT 4
/* DCBADDR (4 bits): display bus slave address */
#define DCB_ADDR_SHIFT 7
#define DCB_VC2 (0 << DCB_ADDR_SHIFT)
#define DCB_CMAP_ALL (1 << DCB_ADDR_SHIFT)
#define DCB_CMAP0 (2 << DCB_ADDR_SHIFT)
#define DCB_CMAP1 (3 << DCB_ADDR_SHIFT)
#define DCB_XMAP_ALL (4 << DCB_ADDR_SHIFT)
#define DCB_XMAP0 (5 << DCB_ADDR_SHIFT)
#define DCB_XMAP1 (6 << DCB_ADDR_SHIFT)
#define DCB_BT445 (7 << DCB_ADDR_SHIFT)
#define DCB_VCC1 (8 << DCB_ADDR_SHIFT)
#define DCB_VAB1 (9 << DCB_ADDR_SHIFT)
#define DCB_LG3_BDVERS0 (10 << DCB_ADDR_SHIFT)
#define DCB_LG3_ICS1562 (11 << DCB_ADDR_SHIFT)
#define DCB_RESERVED (15 << DCB_ADDR_SHIFT)
/* DCB protocol ack types */
#define DCB_ENSYNCACK (1 << 11)
#define DCB_ENASYNCACK (1 << 12)
#define DCB_CSWIDTH_SHIFT 13
#define DCB_CSHOLD_SHIFT 18
#define DCB_CSSETUP_SHIFT 23
/* XMAP9 specific defines */
/* XMAP9 -- registers as seen on the DCBMODE register*/
# define XM9_CRS_CONFIG (0 << DCB_CRS_SHIFT)
# define XM9_PUPMODE (1 << 0)
# define XM9_ODD_PIXEL (1 << 1)
# define XM9_8_BITPLANES (1 << 2)
# define XM9_SLOW_DCB (1 << 3)
# define XM9_VIDEO_RGBMAP_MASK (3 << 4)
# define XM9_VIDEO_RGBMAP_M0 (1 << 4)
# define XM9_VIDEO_RGMPAP_M1 (1 << 5)
# define XM9_VIDEO_RGBMAP_M2 (3 << 4)
# define XM9_EXPRESS_VIDEO (1 << 6)
# define XM9_VIDEO_OPTION (1 << 7)
# define XM9_CRS_REVISION (1 << DCB_CRS_SHIFT)
# define XM9_CRS_FIFO_AVAIL (2 << DCB_CRS_SHIFT)
# define XM9_FIFO_0_AVAIL 0
# define XM9_FIFO_1_AVAIL 1
# define XM9_FIFO_2_AVAIL 3
# define XM9_FIFO_3_AVAIL 2
# define XM9_FIFO_FULL XM9_FIFO_0_AVAIL
# define XM9_FIFO_EMPTY XM9_FIFO_3_AVAIL
# define XM9_CRS_CURS_CMAP_MSB (3 << DCB_CRS_SHIFT)
# define XM9_CRS_PUP_CMAP_MSB (4 << DCB_CRS_SHIFT)
# define XM9_CRS_MODE_REG_DATA (5 << DCB_CRS_SHIFT)
# define XM9_CRS_MODE_REG_INDEX (7 << DCB_CRS_SHIFT)
#define DCB_CYCLES(setup,hold,width) \
((hold << DCB_CSHOLD_SHIFT) | \
(setup << DCB_CSSETUP_SHIFT)| \
(width << DCB_CSWIDTH_SHIFT))
#define W_DCB_XMAP9_PROTOCOL DCB_CYCLES (2, 1, 0)
#define WSLOW_DCB_XMAP9_PROTOCOL DCB_CYCLES (5, 5, 0)
#define WAYSLOW_DCB_XMAP9_PROTOCOL DCB_CYCLES (12, 12, 0)
#define R_DCB_XMAP9_PROTOCOL DCB_CYCLES (2, 1, 3)
/* xmap9 mode register layout */
#define XM9_MREG_BUF_SEL (1 << 0)
#define XM9_MREG_OVL_BUF_SEL (1 << 1)
#define XM9_MREG_GAMMA_BYPASS (1 << 2)
#define XM9_MREG_MSB_CMAP (31 << 3)
#define XM9_MREG_PIX_MODE_MASK (3 << 8)
#define XM9_MREG_PIX_MODE_RGB0 (1 << 8)
#define XM9_MREG_PIX_MODE_RGB1 (1 << 9)
#define XM9_MREG_PIX_MODE_RGB2 (3 << 8)
#define XM9_MREG_PIX_SIZE_MASK (3 << 10)
#define XM9_MREG_PIX_SIZE_8BPP (1 << 10)
#define XM9_MREG_PIX_SIZE_12BPP (1 << 11)
#define XM9_MREG_PIX_SIZE_24BPP (3 << 10)
#define XM9_MREG_VID_MODE_MASK (3 << 12)
#define XM9_MREG_VID_MODE_OVL (1 << 12)
#define XM9_MREG_VID_MODE_UDL (1 << 13)
#define XM9_MREG_VID_MODE_RPL (3 << 12)
#define XM9_MREG_BUF_VID_ALPHA (1 << 15)
#define XM9_MREG_APIX_MODE_MASK (7 << 16)
#define XM9_MREG_APIX_MODE_FUDL (1 << 16)
#define XM9_MREG_APIX_MODE_FOVL (1 << 17)
#define XM9_MREG_APIX_MODE_ODB (3 << 17)
#define XM9_MREG_APIX_MODE_BOTH (7 << 16)
#define XM9_MREG_AMSB_CMAP_MASK (31 << 19)
typedef struct Newport Newport;
struct Newport
{
ulong drawmode1;
ulong drawmode0;
ulong lsmode;
ulong lspattern;
ulong lspatsave;
ulong zpattern;
ulong colorback;
ulong colorvram;
ulong alpharef;
ulong unused0;
ulong smask0x;
ulong smask0y;
ulong _setup;
ulong _stepz;
ulong _lsrestore;
ulong _lssave;
ulong unused1[0x30];
ulong _xstart;
ulong _ystart;
ulong _xend;
ulong _yend;
ulong xsave;
ulong xymode;
ulong bresd;
ulong bress1;
ulong bresoctinc1;
ulong bresoctinc2;
ulong brese1;
ulong bress2;
ulong aweight0;
ulong aweight1;
ulong xstartf;
ulong ystartf;
ulong xendf;
ulong yendf;
ulong xstarti;
ulong xendfi;
ulong xystarti;
ulong xyendi;
ulong xstartendi;
ulong unused2[0x29];
ulong colorred;
ulong coloralpha;
ulong colorgrn;
ulong colorblue;
ulong slopered;
ulong slopealpha;
ulong slopegrn;
ulong slopeblue;
ulong wrmask;
ulong colori;
ulong colorx;
ulong slopered1;
ulong hostrw0;
ulong hostrw1;
ulong dcbmode;
ulong unused3;
ulong dcbdata0;
ulong dcbdata1;
ulong unused4[0x36e];
ulong smask1x;
ulong smask1y;
ulong smask2x;
ulong smask2y;
ulong smask3x;
ulong smask3y;
ulong smask4x;
ulong smask4y;
ulong topscan;
ulong xywin;
ulong clipmode;
ulong unused5;
ulong config;
ulong unused6;
ulong stat;
ulong ustat;
ulong dreset;
};
static Newport *regs = IO(Newport, GIO_NEWPORT);
static Newport *regsgo = IO(Newport, GIO_NEWPORT|0x800);
Memimage *gscreen;
static Point curoff;
static void
vc2set(uchar r, ushort val)
{
regs->dcbmode = NPORT_DMODE_AVC2 | VC2_REGADDR_INDEX |
NPORT_DMODE_W3 | NPORT_DMODE_ECINC | VC2_PROTOCOL;
regs->dcbdata0 = r << 24 | val << 8;
}
static ushort
vc2get(uchar r)
{
regs->dcbmode = NPORT_DMODE_AVC2 | VC2_REGADDR_INDEX |
NPORT_DMODE_W1 | NPORT_DMODE_ECINC | VC2_PROTOCOL;
regs->dcbdata0 = r << 24;
regs->dcbmode = NPORT_DMODE_AVC2 | VC2_REGADDR_IREG |
NPORT_DMODE_W2 | NPORT_DMODE_ECINC | VC2_PROTOCOL;
return regs->dcbdata0 >> 16;
}
void
cursoron(void)
{
Point xy;
int s;
xy = addpt(mousexy(), curoff);
s = splhi();
vc2set(VC2_IREG_CURSX, xy.x);
vc2set(VC2_IREG_CURSY, xy.y);
vc2set(VC2_IREG_CONTROL, vc2get(VC2_IREG_CONTROL) | VC2_CTRL_ECDISP);
splx(s);
}
void
cursoroff(void)
{
int s;
s = splhi();
vc2set(VC2_IREG_CONTROL, vc2get(VC2_IREG_CONTROL) & ~VC2_CTRL_ECDISP);
splx(s);
}
void
setcursor(Cursor *curs)
{
static uchar mem[(2*32*32)/8];
uchar *set, *clr;
int i, s;
memset(mem, 0, sizeof(mem));
/*
* convert to two 32x32 bitmaps
*/
set = mem;
clr = mem + (32*32)/8;
for(i=0;i<32;i++) {
*set++ = curs->set[i];
*clr++ = curs->clr[i];
if(i & 1){
set += 2;
clr += 2;
}
}
curoff = addpt(Pt(30,30), curs->offset);
/*
* upload two bytes at a time
*/
s = splhi();
vc2set(VC2_IREG_RADDR, vc2get(VC2_IREG_CENTRY));
regs->dcbmode = NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
NPORT_DMODE_W2 | VC2_PROTOCOL;
for(i = 0; i < sizeof(mem); i += 2){
while(regs->stat & NPORT_STAT_BBUSY)
;
regs->dcbdata0 = *(ushort*)(&mem[i]) << 16;
}
splx(s);
}
static void
setmode(void)
{
while(regs->stat & NPORT_STAT_BBUSY)
;
regs->dcbmode = (DCB_XMAP_ALL | W_DCB_XMAP9_PROTOCOL |
XM9_CRS_CONFIG | NPORT_DMODE_W1);
regs->dcbdata0 &= ~((XM9_8_BITPLANES | XM9_PUPMODE)<<24);
while(regs->stat & NPORT_STAT_BBUSY)
;
regs->dcbmode = (DCB_XMAP_ALL | W_DCB_XMAP9_PROTOCOL |
XM9_CRS_MODE_REG_DATA | NPORT_DMODE_W4);
regs->dcbdata0 = (XM9_MREG_PIX_SIZE_24BPP |
XM9_MREG_PIX_MODE_RGB1 | XM9_MREG_GAMMA_BYPASS);
while(regs->stat & NPORT_STAT_BBUSY)
;
regs->dcbmode = (DCB_XMAP_ALL | W_DCB_XMAP9_PROTOCOL |
XM9_CRS_MODE_REG_INDEX | NPORT_DMODE_W1);
regs->dcbdata0 &= ~(0xFF<<24);
regs->drawmode1 = DM1_RGBPLANES |
NPORT_DMODE1_CCLT | NPORT_DMODE1_CCEQ | NPORT_DMODE1_CCGT | NPORT_DMODE1_LOSRC |
NPORT_DMODE1_DD24 | NPORT_DMODE1_RGBMD | NPORT_DMODE1_HD32 | NPORT_DMODE1_RWPCKD;
}
static void
arcsoff(void)
{
if(consuart != nil && consuart->console && strcmp(consuart->name, "arcs") == 0){
consuart = nil;
serialoq = nil;
}
}
void
flushmemscreen(Rectangle r)
{
static int modeset = 0;
ulong *x0;
int s, w;
if(rectclip(&r, gscreen->r) == 0)
return;
s = splhi();
if(!modeset){
modeset = 1;
arcsoff();
setmode();
}
while(regs->stat & NPORT_STAT_GBUSY)
;
regs->drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK | NPORT_DMODE0_CHOST);
regs->xystarti = r.min.x << 16 | r.min.y;
regs->xyendi = r.max.x-1 << 16 | r.max.y-1;
x0 = wordaddr(gscreen, r.min);
for(w = r.max.x - r.min.x; r.min.y < r.max.y; r.min.y++){
outl(®sgo->hostrw0, x0, w);
x0 += gscreen->width;
}
splx(s);
}
void
screeninit(void)
{
enum {
RGBX32 = CHAN4(CRed, 8, CGreen, 8, CBlue, 8, CIgnore, 8),
};
memimageinit();
gscreen = allocmemimage(Rect(0,0,1280,1024), RGBX32);
if(gscreen == nil)
panic("screeninit: gscreen == nil");
memfillcolor(gscreen, 0xFFFFFFFF);
mouseaccelerate(3);
}
Memdata*
attachscreen(Rectangle *r, ulong *chan, int* d, int *width, int *softscreen)
{
if(gscreen == nil)
return nil;
*r = gscreen->r;
*d = gscreen->depth;
*chan = gscreen->chan;
*width = gscreen->width;
*softscreen = 1;
gscreen->data->ref++;
return gscreen->data;
}
void
getcolor(ulong, ulong *, ulong *, ulong *)
{
}
int
setcolor(ulong, ulong, ulong, ulong)
{
return 0;
}
void
blankscreen(int)
{
}
void
mousectl(Cmdbuf *)
{
}
/*
* sgi mouse protocol
* byte 0 - Y0 X0 Y7 X7 F M R L
* byte 1 - X7 X6 X5 X4 X3 X2 X1 X0
* byte 2 - Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0
*/
void
sgimouseputc(int c)
{
static uchar msg[3];
static int nb;
int dx, dy, newbuttons;
static uchar b[] = { 0, 1, 4, 5, 2, 3, 6, 7 };
static ulong lasttick;
ulong m;
/* Resynchronize in stream with timing. */
m = MACHP(0)->ticks;
if(TK2SEC(m - lasttick) > 2)
nb = 0;
lasttick = m;
msg[nb] = c;
if(++nb == 3){
nb = 0;
newbuttons = b[msg[0]&7];
dx = (char)msg[1];
dy = -(char)msg[2];
mousetrack(dx, dy, newbuttons, TK2MS(MACHP(0)->ticks));
}
}