NetBSD/sys/arch/pmax/dev/pm.c

431 lines
11 KiB
C

/* $NetBSD: pm.c,v 1.34 2000/11/02 23:37:08 mhitch Exp $ */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)pm.c 8.1 (Berkeley) 6/10/93
*/
/*
* devGraphics.c --
*
* This file contains machine-dependent routines for the graphics device.
*
* Copyright (C) 1989 Digital Equipment Corporation.
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies.
* Digital Equipment Corporation makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* from: Header: /sprite/src/kernel/dev/ds3100.md/RCS/devGraphics.c,
* v 9.2 90/02/13 22:16:24 shirriff Exp SPRITE (DECWRL)";
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: pm.c,v 1.34 2000/11/02 23:37:08 mhitch Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <pmax/pmax/kn01.h>
#include <pmax/ibus/ibusvar.h>
#include <machine/autoconf.h>
#include <machine/fbio.h>
#include <machine/fbvar.h>
#include <machine/locore.h> /* wbflush() */
#include <machine/pmioctl.h>
#include <pmax/dev/bt478var.h>
#include <pmax/dev/fbreg.h>
#include <pmax/dev/pmvar.h>
#include <pmax/dev/pmreg.h>
/*
* These need to be mapped into user space.
*/
static u_short curReg; /* copy of PCCRegs.cmdr since it's read only */
static struct fbuaccess pmu;
static struct pmax_fbtty pmfb;
static struct fbinfo *pm_fi;
static int pm_video_on __P ((struct fbinfo *));
static int pm_video_off __P ((struct fbinfo *));
static void pmInitColorMap __P((struct fbinfo *fi));
static void pmPosCursor __P((struct fbinfo *fi, int x, int y));
static void pmLoadCursor __P((struct fbinfo *fi, u_short *ptr));
static void pccCursorOff __P((struct fbinfo *fi));
static struct fbdriver pm_driver = {
pm_video_on,
pm_video_off,
pmInitColorMap, /* pcc cursor wrapper for bt478InitColorMap */
bt478GetColorMap,
bt478LoadColorMap,
pmPosCursor,
pmLoadCursor,
bt478CursorColor,
};
static int pmmatch __P((struct device *, struct cfdata *, void *));
static void pmattach __P((struct device *, struct device *, void *));
static int pminit __P((struct fbinfo *, caddr_t, int));
struct cfattach pm_ds_ca = {
sizeof(struct device), pmmatch, pmattach
};
int
pm_cnattach()
{
struct fbinfo *fi;
caddr_t base;
#if 0
ULTRIX does in this way;
check the presense of monochrome bit in CSR.
if set, there is a monochrome framebuffer
if not set, try two write and read cycles of framebuffer to make
sure the presense of video memory.
#else
base = (caddr_t)MIPS_PHYS_TO_KSEG1(KN01_SYS_PCC);
if (badaddr(base, 4))
return (0);
#endif
fbcnalloc(&fi);
if (pminit(fi, base, 0) < 0)
return (0);
pm_fi = fi;
return (1);
}
static int
pmmatch(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct ibus_attach_args *ia = aux;
caddr_t pmaddr = (caddr_t)ia->ia_addr;
/* make sure that we're looking for this type of device. */
if (strcmp(ia->ia_name, "pm") != 0)
return (0);
if (badaddr(pmaddr, 4))
return (0);
return (1);
}
static void
pmattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct ibus_attach_args *ia = aux;
caddr_t base = (caddr_t)ia->ia_addr;
struct fbinfo *fi;
if (pm_fi)
fi = pm_fi;
else {
if (fballoc(&fi) < 0 || pminit(fi, base, self->dv_unit) < 0)
return; /* failed */
}
((struct fbsoftc *)self)->sc_fi = fi;
printf(": %dx%dx%d%s",
fi->fi_type.fb_width,
fi->fi_type.fb_height,
fi->fi_type.fb_depth,
(pm_fi) ? " console" : "");
printf("\n");
}
int
pminit(fi, base, unit)
struct fbinfo *fi;
caddr_t base;
int unit;
{
u_int16_t kn01csr;
PCCRegs *pcc;
kn01csr = *(volatile u_int16_t *)MIPS_PHYS_TO_KSEG1(KN01_SYS_CSR);
fi->fi_unit = unit;
fi->fi_pixels = (caddr_t)MIPS_PHYS_TO_KSEG1(KN01_PHYS_FBUF_START);
fi->fi_base = base; /* PCC address */
fi->fi_vdac = (caddr_t)MIPS_PHYS_TO_KSEG1(KN01_SYS_VDAC);
if (kn01csr & KN01_CSR_MONO) {
fi->fi_type.fb_boardtype = PMAX_FBTYPE_PM_MONO;
fi->fi_type.fb_depth = 1;
fi->fi_type.fb_cmsize = 0;
fi->fi_type.fb_size = 0x40000;
fi->fi_pixelsize = (1024 / 8) * 864;
fi->fi_linebytes = 2048 / 8;
}
else {
fi->fi_type.fb_boardtype = PMAX_FBTYPE_PM_COLOR;
fi->fi_type.fb_depth = 8;
fi->fi_type.fb_cmsize = 256;
fi->fi_type.fb_size = 0x100000;
fi->fi_pixelsize = 1024 * 864;
fi->fi_linebytes = 1024;
}
fi->fi_type.fb_width = 1024;
fi->fi_type.fb_height = 864;
fi->fi_size = fi->fi_type.fb_size;
fi->fi_driver = &pm_driver;
fi->fi_blanked = 0;
/*
* Set mmap'able address of qvss-compatible user info structure.
*
* Must be in Uncached space since the fbuaccess structure is
* mapped into the user's address space uncached.
*
* XXX can go away when MI support for d_mmap entrypoints added.
*/
fi->fi_fbu = (void *)MIPS_PHYS_TO_KSEG1(MIPS_KSEG0_TO_PHYS(&pmu));
/* This is glass-tty state but it's in the shared structure. Ick. */
fi->fi_fbu->scrInfo.max_row = 56;
fi->fi_fbu->scrInfo.max_col = 80;
/* These are non-zero on the kn01 framebuffer. Why? */
fi->fi_fbu->scrInfo.min_cur_x = -15;
fi->fi_fbu->scrInfo.min_cur_y = -15;
init_pmaxfbu(fi);
/*
* Initialize old-style glass-tty screen info.
*/
fi->fi_glasstty = &pmfb;
/* it's safe to assume serial driver existence in this case */
tb_kbdmouseconfig(fi);
/* Initialize the cursor register on . */
/* Turn off the hardware cursor sprite for rcons text mode. */
pcc = (PCCRegs *)fi->fi_base;
pcc->cmdr = PCC_FOPB | PCC_VBHI;
curReg = 0; /* XXX */
pccCursorOff(fi);
/*
* Initialize the color map, the screen, and the mouse.
*/
bt478init(fi);
fbconnect(fi);
return (0);
}
/*
* ----------------------------------------------------------------------------
*
* pmLoadCursor --
*
* Routine to load the cursor Sprite pattern.
*
* Results:
* None.
*
* Side effects:
* The cursor is loaded into the hardware cursor.
* Also, turn on the cursor in case it was disabled before.
* If someone sets a cursor pattern, it should probably be displayed.
*
* ----------------------------------------------------------------------------
*/
static void
pmLoadCursor(fi, cur)
struct fbinfo *fi;
unsigned short *cur;
{
PCCRegs *pcc = (PCCRegs *)fi->fi_base;
int i;
curReg |= PCC_LODSA;
pcc->cmdr = curReg;
for (i = 0; i < 32; i++) {
pcc->memory = cur[i];
wbflush();
}
curReg &= ~PCC_LODSA;
/* turn on the cursor plane overlays in the PCC chip. */
curReg |= (PCC_ENPA | PCC_ENPB);
pcc->cmdr = curReg;
}
/*
*----------------------------------------------------------------------
*
* pmPosCursor --
*
* Postion the cursor.
*
* Results:
* None.
*
* Side effects:
* None.
* NB: should not turn on the hardwar cursor, since the
* Xserver positions the cursor to upper left corner as the last
* cursor operation before it exits.
*
*----------------------------------------------------------------------
*/
static void
pmPosCursor(fi, x, y)
struct fbinfo *fi;
int x, y;
{
PCCRegs *pcc = (PCCRegs *)fi->fi_base;
if (y < fi->fi_fbu->scrInfo.min_cur_y ||
y > fi->fi_fbu->scrInfo.max_cur_y)
y = fi->fi_fbu->scrInfo.max_cur_y;
if (x < fi->fi_fbu->scrInfo.min_cur_x ||
x > fi->fi_fbu->scrInfo.max_cur_x)
x = fi->fi_fbu->scrInfo.max_cur_x;
fi->fi_fbu->scrInfo.cursor.x = x; /* keep track of real cursor */
fi->fi_fbu->scrInfo.cursor.y = y; /* position, indep. of mouse */
pcc->xpos = PCC_X_OFFSET + x;
pcc->ypos = PCC_Y_OFFSET + y;
}
#if 0 /* XXX not used */
/*
* Turn hardware cursor on by turning on the enable for A and B
* overlay planes. video output under the cursor sprite is then
* determined by the A and B plane contents.
*/
void pccCursorOn(fi)
struct fbinfo *fi;
{
PCCRegs *pcc = (PCCRegs *)fi -> fi_base;
pcc -> cmdr = curReg | (PCC_ENPA | PCC_ENPB);
wbflush();
}
#endif
/*
* Turn hardware cursor off by turning off the enable for A and B
* overlay planes. video output under the cursor sprite is then
* determined by the framebuffer contents.
*/
static void
pccCursorOff(fi)
struct fbinfo *fi;
{
PCCRegs *pcc = (PCCRegs *)fi -> fi_base;
pcc -> cmdr = curReg & ~(PCC_ENPA | PCC_ENPB);
wbflush();
}
/*
* Initialize colourmap to default values.
* The default cursor hardware state is off.
*/
void
pmInitColorMap(fi)
struct fbinfo *fi;
{
bt478InitColorMap(fi);
pccCursorOff(fi);
}
/*
* Enable the video display.
*/
static int
pm_video_on(fi)
struct fbinfo *fi;
{
PCCRegs *pcc = (PCCRegs *)fi -> fi_base;
if (!fi -> fi_blanked)
return 0;
pcc -> cmdr = curReg & ~(PCC_FOPA | PCC_FOPB);
bt478RestoreCursorColor (fi);
fi -> fi_blanked = 0;
return 0;
}
/*
* Disable the video display.
* Sets the FOPA and FOPB bits in the PCC chip to force the contents
* of the A and B overlay planes to 1. Video output is then
* determined by colourmap entry 12 (0x0c), which we set here to
* black.
*/
static int
pm_video_off(fi)
struct fbinfo *fi;
{
PCCRegs *pcc = (PCCRegs *)fi -> fi_base;
if (fi -> fi_blanked)
return 0;
bt478BlankCursor (fi);
pcc -> cmdr = curReg | PCC_FOPA | PCC_FOPB;
fi -> fi_blanked = 1;
return 0;
}