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NetBSD/sys/arch/sparc/dev/cgfourteen.c

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/* $NetBSD: cgfourteen.c,v 1.13 1998/07/29 18:36:08 pk Exp $ */
/*
* Copyright (c) 1996
* The President and Fellows of Harvard College. All rights reserved.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Harvard University.
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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.
* This product includes software developed by Harvard University 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.
*
* Based on:
* NetBSD: cgthree.c,v 1.28 1996/05/31 09:59:22 pk Exp
* NetBSD: cgsix.c,v 1.25 1996/04/01 17:30:00 christos Exp
*/
/*
* Driver for Campus-II on-board mbus-based video (cgfourteen).
* Provides minimum emulation of a Sun cgthree 8-bit framebuffer to
* allow X to run.
*
* Does not handle interrupts, even though they can occur.
*
* XXX should defer colormap updates to vertical retrace interrupts
*/
#include "opt_uvm.h"
/*
* The following is for debugging only; it opens up a security hole
* enabled by allowing any user to map the control registers for the
* cg14 into their space.
*/
#undef CG14_MAP_REGS
/*
* The following enables 24-bit operation: when opened, the framebuffer
* will switch to 24-bit mode (actually 32-bit mode), and provide a
* simple cg8 emulation.
*
* XXX Note that the code enabled by this define is currently untested/broken.
*/
#undef CG14_CG8
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/tty.h>
#include <sys/conf.h>
#include <vm/vm.h>
#include <machine/fbio.h>
#include <machine/autoconf.h>
#include <machine/pmap.h>
#include <machine/fbvar.h>
#include <machine/cpu.h>
#include <machine/conf.h>
#include <sparc/dev/cgfourteenreg.h>
#include <sparc/dev/cgfourteenvar.h>
/* autoconfiguration driver */
static void cgfourteenattach(struct device *, struct device *, void *);
static int cgfourteenmatch(struct device *, struct cfdata *, void *);
static void cgfourteenunblank(struct device *);
/* cdevsw prototypes */
cdev_decl(cgfourteen);
struct cfattach cgfourteen_ca = {
sizeof(struct cgfourteen_softc), cgfourteenmatch, cgfourteenattach
};
extern struct cfdriver cgfourteen_cd;
/* frame buffer generic driver */
static struct fbdriver cgfourteenfbdriver = {
cgfourteenunblank, cgfourteenopen, cgfourteenclose, cgfourteenioctl,
cgfourteenpoll, cgfourteenmmap
};
extern int fbnode;
extern struct tty *fbconstty;
static void cg14_set_video __P((struct cgfourteen_softc *, int));
static int cg14_get_video __P((struct cgfourteen_softc *));
static int cg14_get_cmap __P((struct fbcmap *, union cg14cmap *, int));
static int cg14_put_cmap __P((struct fbcmap *, union cg14cmap *, int));
static void cg14_load_hwcmap __P((struct cgfourteen_softc *, int, int));
static void cg14_init __P((struct cgfourteen_softc *));
static void cg14_reset __P((struct cgfourteen_softc *));
static void cg14_loadomap __P((struct cgfourteen_softc *));/* cursor overlay */
static void cg14_setcursor __P((struct cgfourteen_softc *));/* set position */
static void cg14_loadcursor __P((struct cgfourteen_softc *));/* set shape */
/*
* Match a cgfourteen.
*/
int
cgfourteenmatch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
union obio_attach_args *uoba = aux;
struct sbus_attach_args *sa = &uoba->uoba_sbus;
/*
* The cgfourteen is a local-bus video adaptor, accessed directly
* via the processor, and not through device space or an external
* bus. Thus we look _only_ at the obio bus.
* Additionally, these things exist only on the Sun4m.
*/
if (uoba->uoba_isobio4 != 0 || !CPU_ISSUN4M)
return (0);
/* Check driver name */
return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
}
/*
* Attach a display. We need to notice if it is the console, too.
*/
void
cgfourteenattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
union obio_attach_args *uoba = aux;
struct sbus_attach_args *sa = &uoba->uoba_sbus;
struct cgfourteen_softc *sc = (struct cgfourteen_softc *)self;
struct fbdevice *fb = &sc->sc_fb;
bus_space_handle_t bh;
int node, ramsize;
u_int32_t *lut;
int i, isconsole;
node = sa->sa_node;
/* Remember cookies for cgfourteenmmap() */
sc->sc_bustag = sa->sa_bustag;
fb->fb_driver = &cgfourteenfbdriver;
fb->fb_device = &sc->sc_dev;
/* Mask out invalid flags from the user. */
fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags & FB_USERMASK;
/*
* We're emulating a cg3/8, so represent ourselves as one
*/
#ifdef CG14_CG8
fb->fb_type.fb_type = FBTYPE_MEMCOLOR;
fb->fb_type.fb_depth = 32;
#else
fb->fb_type.fb_type = FBTYPE_SUN3COLOR;
fb->fb_type.fb_depth = 8;
#endif
fb_setsize_obp(fb, sc->sc_fb.fb_type.fb_depth, 1152, 900, node);
ramsize = roundup(fb->fb_type.fb_height * fb->fb_linebytes, NBPG);
fb->fb_type.fb_cmsize = CG14_CLUT_SIZE;
fb->fb_type.fb_size = ramsize;
if (sa->sa_nreg < 2) {
printf("%s: only %d register sets\n",
self->dv_xname, sa->sa_nreg);
return;
}
bcopy(sa->sa_reg, sc->sc_physadr,
sa->sa_nreg * sizeof(struct sbus_reg));
/*
* Now map in the 8 useful pages of registers
*/
if (sa->sa_size < 0x10000) {
#ifdef DIAGNOSTIC
printf("warning: can't find all cgfourteen registers...\n");
#endif
sa->sa_size = 0x10000;
}
if (sbus_bus_map(sa->sa_bustag, sa->sa_slot,
sa->sa_offset,
sa->sa_size,
BUS_SPACE_MAP_LINEAR,
0, &bh) != 0) {
printf("%s: cannot map control registers\n", self->dv_xname);
return;
}
sc->sc_ctl = (struct cg14ctl *) (bh);
sc->sc_hwc = (struct cg14curs *) (bh + CG14_OFFSET_CURS);
sc->sc_dac = (struct cg14dac *) (bh + CG14_OFFSET_DAC);
sc->sc_xlut = (struct cg14xlut *) (bh + CG14_OFFSET_XLUT);
sc->sc_clut1 = (struct cg14clut *) (bh + CG14_OFFSET_CLUT1);
sc->sc_clut2 = (struct cg14clut *) (bh + CG14_OFFSET_CLUT2);
sc->sc_clut3 = (struct cg14clut *) (bh + CG14_OFFSET_CLUT3);
sc->sc_clutincr = (u_int *) (bh + CG14_OFFSET_CLUTINCR);
/*
* Let the user know that we're here
*/
#ifdef CG14_CG8
printf(": cgeight emulated at %dx%dx24bpp",
fb->fb_type.fb_width, fb->fb_type.fb_height);
#else
printf(": cgthree emulated at %dx%dx8bpp",
fb->fb_type.fb_width, fb->fb_type.fb_height);
#endif
/*
* Enable the video, but don't change the pixel depth.
*/
cg14_set_video(sc, 1);
/*
* Grab the initial colormap
*/
lut = (u_int32_t *) sc->sc_clut1->clut_lut;
for (i = 0; i < CG14_CLUT_SIZE; i++)
sc->sc_cmap.cm_chip[i] = lut[i];
/* See if we're the console */
isconsole = node == fbnode && fbconstty != NULL;
if (isconsole) {
printf(" (console)\n");
#ifdef notdef
/*
* We don't use the raster console since the cg14 is
* fast enough already.
*/
#ifdef RASTERCONSOLE
fbrcons_init(fb);
#endif
#endif /* notdef */
} else
printf("\n");
/* Attach to /dev/fb */
if (node == fbnode)
fb_attach(&sc->sc_fb, isconsole);
}
/*
* Keep track of the number of opens made. In the 24-bit driver, we need to
* switch to 24-bit mode on the first open, and switch back to 8-bit on
* the last close. This kind of nonsense is needed to give screenblank
* a fighting chance of working.
*/
static int cg14_opens = 0;
int
cgfourteenopen(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
struct cgfourteen_softc *sc = cgfourteen_cd.cd_devs[minor(dev)];
int unit = minor(dev);
int s, oldopens;
if (unit >= cgfourteen_cd.cd_ndevs ||
cgfourteen_cd.cd_devs[unit] == NULL)
return (ENXIO);
s = splhigh();
oldopens = cg14_opens++;
splx(s);
/* Setup the cg14 as we want it, and save the original PROM state */
if (oldopens == 0) /* first open only, to make screenblank work */
cg14_init(sc);
return (0);
}
int
cgfourteenclose(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
struct cgfourteen_softc *sc = cgfourteen_cd.cd_devs[minor(dev)];
int s, opens;
s = splhigh();
opens = --cg14_opens;
if (cg14_opens < 0)
opens = cg14_opens = 0;
splx(s);
/*
* Restore video state to make the PROM happy, on last close.
*/
if (opens == 0)
cg14_reset(sc);
return (0);
}
int
cgfourteenioctl(dev, cmd, data, flags, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flags;
struct proc *p;
{
struct cgfourteen_softc *sc = cgfourteen_cd.cd_devs[minor(dev)];
struct fbgattr *fba;
union cg14cursor_cmap tcm;
int v, error;
u_int count;
switch (cmd) {
case FBIOGTYPE:
*(struct fbtype *)data = sc->sc_fb.fb_type;
break;
case FBIOGATTR:
fba = (struct fbgattr *)data;
fba->real_type = FBTYPE_MDICOLOR;
fba->owner = 0; /* XXX ??? */
fba->fbtype = sc->sc_fb.fb_type;
fba->sattr.flags = 0;
fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type;
fba->sattr.dev_specific[0] = -1;
fba->emu_types[0] = sc->sc_fb.fb_type.fb_type;
fba->emu_types[1] = -1;
break;
case FBIOGETCMAP:
return (cg14_get_cmap((struct fbcmap *)data, &sc->sc_cmap,
CG14_CLUT_SIZE));
case FBIOPUTCMAP:
/* copy to software map */
#define p ((struct fbcmap *)data)
#ifdef CG14_CG8
p->index &= 0xffffff;
#endif
error = cg14_put_cmap(p, &sc->sc_cmap, CG14_CLUT_SIZE);
if (error)
return (error);
/* now blast them into the chip */
/* XXX should use retrace interrupt */
cg14_load_hwcmap(sc, p->index, p->count);
#undef p
break;
case FBIOGVIDEO:
*(int *)data = cg14_get_video(sc);
break;
case FBIOSVIDEO:
cg14_set_video(sc, *(int *)data);
break;
/* these are for both FBIOSCURSOR and FBIOGCURSOR */
#define p ((struct fbcursor *)data)
#define cc (&sc->sc_cursor)
case FBIOGCURSOR:
/* do not quite want everything here... */
p->set = FB_CUR_SETALL; /* close enough, anyway */
p->enable = cc->cc_enable;
p->pos = cc->cc_pos;
p->hot = cc->cc_hot;
p->size = cc->cc_size;
/* begin ugh ... can we lose some of this crap?? */
if (p->image != NULL) {
count = cc->cc_size.y * 32 / NBBY;
error = copyout((caddr_t)cc->cc_cplane,
(caddr_t)p->image, count);
if (error)
return (error);
error = copyout((caddr_t)cc->cc_eplane,
(caddr_t)p->mask, count);
if (error)
return (error);
}
if (p->cmap.red != NULL) {
error = cg14_get_cmap(&p->cmap,
(union cg14cmap *)&cc->cc_color, 2);
if (error)
return (error);
} else {
p->cmap.index = 0;
p->cmap.count = 2;
}
/* end ugh */
break;
case FBIOSCURSOR:
/*
* For setcmap and setshape, verify parameters, so that
* we do not get halfway through an update and then crap
* out with the software state screwed up.
*/
v = p->set;
if (v & FB_CUR_SETCMAP) {
/*
* This use of a temporary copy of the cursor
* colormap is not terribly efficient, but these
* copies are small (8 bytes)...
*/
tcm = cc->cc_color;
error = cg14_put_cmap(&p->cmap, (union cg14cmap *)&tcm,
2);
if (error)
return (error);
}
if (v & FB_CUR_SETSHAPE) {
if ((u_int)p->size.x > 32 || (u_int)p->size.y > 32)
return (EINVAL);
count = p->size.y * 32 / NBBY;
#if defined(UVM)
if (!uvm_useracc(p->image, count, B_READ) ||
!uvm_useracc(p->mask, count, B_READ))
return (EFAULT);
#else
if (!useracc(p->image, count, B_READ) ||
!useracc(p->mask, count, B_READ))
return (EFAULT);
#endif
}
/* parameters are OK; do it */
if (v & (FB_CUR_SETCUR | FB_CUR_SETPOS | FB_CUR_SETHOT)) {
if (v & FB_CUR_SETCUR)
cc->cc_enable = p->enable;
if (v & FB_CUR_SETPOS)
cc->cc_pos = p->pos;
if (v & FB_CUR_SETHOT)
cc->cc_hot = p->hot;
cg14_setcursor(sc);
}
if (v & FB_CUR_SETCMAP) {
cc->cc_color = tcm;
cg14_loadomap(sc); /* XXX defer to vertical retrace */
}
if (v & FB_CUR_SETSHAPE) {
cc->cc_size = p->size;
count = p->size.y * 32 / NBBY;
bzero((caddr_t)cc->cc_eplane, sizeof cc->cc_eplane);
bzero((caddr_t)cc->cc_cplane, sizeof cc->cc_cplane);
bcopy(p->mask, (caddr_t)cc->cc_eplane, count);
bcopy(p->image, (caddr_t)cc->cc_cplane, count);
cg14_loadcursor(sc);
}
break;
#undef cc
#undef p
case FBIOGCURPOS:
*(struct fbcurpos *)data = sc->sc_cursor.cc_pos;
break;
case FBIOSCURPOS:
sc->sc_cursor.cc_pos = *(struct fbcurpos *)data;
cg14_setcursor(sc);
break;
case FBIOGCURMAX:
/* max cursor size is 32x32 */
((struct fbcurpos *)data)->x = 32;
((struct fbcurpos *)data)->y = 32;
break;
default:
return (ENOTTY);
}
return (0);
}
/*
* Undo the effect of an FBIOSVIDEO that turns the video off.
*/
static void
cgfourteenunblank(dev)
struct device *dev;
{
cg14_set_video((struct cgfourteen_softc *)dev, 1);
}
/*
* Return the address that would map the given device at the given
* offset, allowing for the given protection, or return -1 for error.
*
* The cg14 frame buffer can be mapped in either 8-bit or 32-bit mode
* starting at the address stored in the PROM. In 8-bit mode, the X
* channel is not present, and can be ignored. In 32-bit mode, mapping
* at 0K delivers a 32-bpp buffer where the upper 8 bits select the X
* channel information. We hardwire the Xlut to all zeroes to insure
* that, regardless of this value, direct 24-bit color access will be
* used.
*
* Alternatively, mapping the frame buffer at an offset of 16M seems to
* tell the chip to ignore the X channel. XXX where does it get the X value
* to use?
*/
int
cgfourteenmmap(dev, off, prot)
dev_t dev;
int off, prot;
{
struct cgfourteen_softc *sc = cgfourteen_cd.cd_devs[minor(dev)];
bus_space_handle_t bh;
#define CG3START (128*1024 + 128*1024)
#define CG8START (256*1024)
#define NOOVERLAY (0x04000000)
if (off & PGOFSET)
panic("cgfourteenmmap");
#if defined(DEBUG) && defined(CG14_MAP_REGS) /* XXX: security hole */
/*
* Map the control registers into user space. Should only be
* used for debugging!
*/
if ((u_int)off >= 0x10000000 && (u_int)off < 0x10000000 + 16*4096) {
off -= 0x10000000;
if (bus_space_mmap(sc->sc_bustag,
sc->sc_physadr[CG14_CTL_IDX].sbr_slot,
sc->sc_physadr[CG14_CTL_IDX].sbr_offset+off,
BUS_SPACE_MAP_LINEAR, &bh))
return (-1);
return ((int)bh);
}
#endif
if ((u_int)off >= NOOVERLAY)
off -= NOOVERLAY;
#ifdef CG14_CG8
else if ((u_int)off >= CG8START) {
off -= CG8START;
}
#else
else if ((u_int)off >= CG3START)
off -= CG3START;
#endif
else
off = 0;
if ((unsigned)off >= sc->sc_fb.fb_type.fb_size *
sc->sc_fb.fb_type.fb_depth/8) {
#ifdef DEBUG
printf("\nmmap request out of bounds: request 0x%x, "
"bound 0x%x\n", (unsigned) off,
(unsigned)sc->sc_fb.fb_type.fb_size);
#endif
return (-1);
}
if (bus_space_mmap(sc->sc_bustag,
sc->sc_physadr[CG14_PXL_IDX].sbr_slot,
sc->sc_physadr[CG14_PXL_IDX].sbr_offset + off,
BUS_SPACE_MAP_LINEAR, &bh))
return (-1);
return ((int)bh);
}
int
cgfourteenpoll(dev, events, p)
dev_t dev;
int events;
struct proc *p;
{
return (seltrue(dev, events, p));
}
/*
* Miscellaneous helper functions
*/
/* Initialize the framebuffer, storing away useful state for later reset */
static void
cg14_init(sc)
struct cgfourteen_softc *sc;
{
u_int32_t *clut;
u_int8_t *xlut;
int i;
/*
* We stash away the following to restore on close:
*
* color look-up table 1 (sc->sc_saveclut)
* x look-up table (sc->sc_savexlut)
* control register (sc->sc_savectl)
* cursor control register (sc->sc_savehwc)
*/
sc->sc_savectl = sc->sc_ctl->ctl_mctl;
sc->sc_savehwc = sc->sc_hwc->curs_ctl;
clut = (u_int32_t *) sc->sc_clut1->clut_lut;
xlut = (u_int8_t *) sc->sc_xlut->xlut_lut;
for (i = 0; i < CG14_CLUT_SIZE; i++) {
sc->sc_saveclut.cm_chip[i] = clut[i];
sc->sc_savexlut[i] = xlut[i];
}
#ifdef CG14_CG8
/*
* Enable the video, and put in 24 bit mode.
*/
sc->sc_ctl->ctl_mctl = CG14_MCTL_ENABLEVID | CG14_MCTL_PIXMODE_32 |
CG14_MCTL_POWERCTL;
/*
* Zero the xlut to enable direct-color mode
*/
bzero(sc->sc_xlut, CG14_CLUT_SIZE);
#else
/*
* Enable the video and put it in 8 bit mode
*/
sc->sc_ctl->ctl_mctl = CG14_MCTL_ENABLEVID | CG14_MCTL_PIXMODE_8 |
CG14_MCTL_POWERCTL;
#endif
}
static void
cg14_reset(sc) /* Restore the state saved on cg14_init */
struct cgfourteen_softc *sc;
{
u_int32_t *clut;
u_int8_t *xlut;
int i;
/*
* We restore the following, saved in cg14_init:
*
* color look-up table 1 (sc->sc_saveclut)
* x look-up table (sc->sc_savexlut)
* control register (sc->sc_savectl)
* cursor control register (sc->sc_savehwc)
*
* Note that we don't touch the video enable bits in the
* control register; otherwise, screenblank wouldn't work.
*/
sc->sc_ctl->ctl_mctl = (sc->sc_ctl->ctl_mctl & (CG14_MCTL_ENABLEVID |
CG14_MCTL_POWERCTL)) |
(sc->sc_savectl & ~(CG14_MCTL_ENABLEVID |
CG14_MCTL_POWERCTL));
sc->sc_hwc->curs_ctl = sc->sc_savehwc;
clut = (u_int32_t *) sc->sc_clut1->clut_lut;
xlut = (u_int8_t *) sc->sc_xlut->xlut_lut;
for (i = 0; i < CG14_CLUT_SIZE; i++) {
clut[i] = sc->sc_saveclut.cm_chip[i];
xlut[i] = sc->sc_savexlut[i];
}
}
/* Enable/disable video display; power down monitor if DPMS-capable */
static void
cg14_set_video(sc, enable)
struct cgfourteen_softc *sc;
int enable;
{
/*
* We can only use DPMS to power down the display if the chip revision
* is greater than 0.
*/
if (enable) {
if ((sc->sc_ctl->ctl_rsr & CG14_RSR_REVMASK) > 0)
sc->sc_ctl->ctl_mctl |= (CG14_MCTL_ENABLEVID |
CG14_MCTL_POWERCTL);
else
sc->sc_ctl->ctl_mctl |= CG14_MCTL_ENABLEVID;
} else {
if ((sc->sc_ctl->ctl_rsr & CG14_RSR_REVMASK) > 0)
sc->sc_ctl->ctl_mctl &= ~(CG14_MCTL_ENABLEVID |
CG14_MCTL_POWERCTL);
else
sc->sc_ctl->ctl_mctl &= ~CG14_MCTL_ENABLEVID;
}
}
/* Get status of video display */
static int
cg14_get_video(sc)
struct cgfourteen_softc *sc;
{
return ((sc->sc_ctl->ctl_mctl & CG14_MCTL_ENABLEVID) != 0);
}
/* Read the software shadow colormap */
static int
cg14_get_cmap(p, cm, cmsize)
struct fbcmap *p;
union cg14cmap *cm;
int cmsize;
{
u_int i, start, count;
u_char *cp;
start = p->index;
count = p->count;
if (start >= cmsize || start + count > cmsize)
#ifdef DEBUG
{
printf("putcmaperror: start %d cmsize %d count %d\n",
start,cmsize,count);
#endif
return (EINVAL);
#ifdef DEBUG
}
#endif
#if defined(UVM)
if (!uvm_useracc(p->red, count, B_WRITE) ||
!uvm_useracc(p->green, count, B_WRITE) ||
!uvm_useracc(p->blue, count, B_WRITE))
return (EFAULT);
#else
if (!useracc(p->red, count, B_WRITE) ||
!useracc(p->green, count, B_WRITE) ||
!useracc(p->blue, count, B_WRITE))
return (EFAULT);
#endif
for (cp = &cm->cm_map[start][0], i = 0; i < count; cp += 4, i++) {
p->red[i] = cp[3];
p->green[i] = cp[2];
p->blue[i] = cp[1];
}
return (0);
}
/* Write the software shadow colormap */
static int
cg14_put_cmap(p, cm, cmsize)
struct fbcmap *p;
union cg14cmap *cm;
int cmsize;
{
u_int i, start, count;
u_char *cp;
start = p->index;
count = p->count;
if (start >= cmsize || start + count > cmsize)
#ifdef DEBUG
{
printf("putcmaperror: start %d cmsize %d count %d\n",
start,cmsize,count);
#endif
return (EINVAL);
#ifdef DEBUG
}
#endif
#if defined(UVM)
if (!uvm_useracc(p->red, count, B_READ) ||
!uvm_useracc(p->green, count, B_READ) ||
!uvm_useracc(p->blue, count, B_READ))
return (EFAULT);
#else
if (!useracc(p->red, count, B_READ) ||
!useracc(p->green, count, B_READ) ||
!useracc(p->blue, count, B_READ))
return (EFAULT);
#endif
for (cp = &cm->cm_map[start][0], i = 0; i < count; cp += 4, i++) {
cp[3] = p->red[i];
cp[2] = p->green[i];
cp[1] = p->blue[i];
cp[0] = 0; /* no alpha channel */
}
return (0);
}
static void
cg14_load_hwcmap(sc, start, ncolors)
struct cgfourteen_softc *sc;
int start, ncolors;
{
/* XXX switch to auto-increment, and on retrace intr */
/* Setup pointers to source and dest */
u_int32_t *colp = &sc->sc_cmap.cm_chip[start];
volatile u_int32_t *lutp = &sc->sc_clut1->clut_lut[start];
/* Copy by words */
while (--ncolors >= 0)
*lutp++ = *colp++;
}
/*
* Load the cursor (overlay `foreground' and `background') colors.
*/
static void
cg14_setcursor(sc)
struct cgfourteen_softc *sc;
{
/* we need to subtract the hot-spot value here */
#define COORD(f) (sc->sc_cursor.cc_pos.f - sc->sc_cursor.cc_hot.f)
sc->sc_hwc->curs_ctl = (sc->sc_cursor.cc_enable ? CG14_CURS_ENABLE : 0);
sc->sc_hwc->curs_x = COORD(x);
sc->sc_hwc->curs_y = COORD(y);
#undef COORD
}
static void
cg14_loadcursor(sc)
struct cgfourteen_softc *sc;
{
volatile struct cg14curs *hwc;
u_int edgemask, m;
int i;
/*
* Keep the top size.x bits. Here we *throw out* the top
* size.x bits from an all-one-bits word, introducing zeros in
* the top size.x bits, then invert all the bits to get what
* we really wanted as our mask. But this fails if size.x is
* 32---a sparc uses only the low 5 bits of the shift count---
* so we have to special case that.
*/
edgemask = ~0;
if (sc->sc_cursor.cc_size.x < 32)
edgemask = ~(edgemask >> sc->sc_cursor.cc_size.x);
hwc = sc->sc_hwc;
for (i = 0; i < 32; i++) {
m = sc->sc_cursor.cc_eplane[i] & edgemask;
hwc->curs_plane0[i] = m;
hwc->curs_plane1[i] = m & sc->sc_cursor.cc_cplane[i];
}
}
static void
cg14_loadomap(sc)
struct cgfourteen_softc *sc;
{
/* set background color */
sc->sc_hwc->curs_color1 = sc->sc_cursor.cc_color.cm_chip[0];
/* set foreground color */
sc->sc_hwc->curs_color2 = sc->sc_cursor.cc_color.cm_chip[1];
}
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