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NetBSD/sys/dev/tc/mfb.c

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/* $NetBSD: mfb.c,v 1.37 2003/06/29 22:30:52 fvdl Exp $ */
/*
* Copyright (c) 1998, 1999 Tohru Nishimura. All rights reserved.
*
* 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 Tohru Nishimura
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: mfb.c,v 1.37 2003/06/29 22:30:52 fvdl Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/ioctl.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/rasops/rasops.h>
#include <dev/wsfont/wsfont.h>
#include <dev/tc/tcvar.h>
#include <dev/ic/bt431reg.h>
#include <uvm/uvm_extern.h>
#if defined(pmax)
#define machine_btop(x) mips_btop(MIPS_KSEG1_TO_PHYS(x))
#define BYTE(base, index) *((u_int8_t *)(base) + ((index)<<2))
#define HALF(base, index) *((u_int16_t *)(base) + ((index)<<1))
#endif
#if defined(__alpha__) || defined(alpha)
#define machine_btop(x) alpha_btop(ALPHA_K0SEG_TO_PHYS(x))
#define BYTE(base, index) *((u_int32_t *)(base) + (index))
#define HALF(base, index) *((u_int32_t *)(base) + (index))
#endif
/* Bt455 hardware registers */
#define bt_reg 0
#define bt_cmap 1
#define bt_clr 2
#define bt_ovly 3
/* Bt431 hardware registers */
#define bt_lo 0
#define bt_hi 1
#define bt_ram 2
#define bt_ctl 3
#define SELECT455(vdac, regno) do { \
BYTE(vdac, bt_reg) = (regno); \
BYTE(vdac, bt_clr) = 0; \
tc_wmb(); \
} while (0)
#define TWIN(x) ((x)|((x) << 8))
#define TWIN_LO(x) (twin = (x) & 0x00ff, twin << 8 | twin)
#define TWIN_HI(x) (twin = (x) & 0xff00, twin | twin >> 8)
#define SELECT431(curs, regno) do { \
HALF(curs, bt_lo) = TWIN(regno);\
HALF(curs, bt_hi) = 0; \
tc_wmb(); \
} while (0)
struct hwcursor64 {
struct wsdisplay_curpos cc_pos;
struct wsdisplay_curpos cc_hot;
struct wsdisplay_curpos cc_size;
struct wsdisplay_curpos cc_magic;
#define CURSOR_MAX_SIZE 64
u_int8_t cc_color[6];
u_int64_t cc_image[64 + 64];
};
struct mfb_softc {
struct device sc_dev;
vaddr_t sc_vaddr;
size_t sc_size;
struct rasops_info *sc_ri;
struct hwcursor64 sc_cursor; /* software copy of cursor */
int sc_blanked;
int sc_curenb; /* cursor sprite enabled */
int sc_changed; /* need update of hardware */
int nscreens;
};
#define MX_MAGIC_X 360
#define MX_MAGIC_Y 36
#define MX_FB_OFFSET 0x200000
#define MX_FB_SIZE 0x200000
#define MX_BT455_OFFSET 0x100000
#define MX_BT431_OFFSET 0x180000
#define MX_IREQ_OFFSET 0x080000 /* Interrupt req. control */
static int mfbmatch __P((struct device *, struct cfdata *, void *));
static void mfbattach __P((struct device *, struct device *, void *));
CFATTACH_DECL(mfb, sizeof(struct mfb_softc),
mfbmatch, mfbattach, NULL, NULL);
static void mfb_common_init __P((struct rasops_info *));
static struct rasops_info mfb_console_ri;
static tc_addr_t mfb_consaddr;
static struct wsscreen_descr mfb_stdscreen = {
"std", 0, 0,
0, /* textops */
0, 0,
WSSCREEN_REVERSE
};
static const struct wsscreen_descr *_mfb_scrlist[] = {
&mfb_stdscreen,
};
static const struct wsscreen_list mfb_screenlist = {
sizeof(_mfb_scrlist) / sizeof(struct wsscreen_descr *), _mfb_scrlist
};
static int mfbioctl __P((void *, u_long, caddr_t, int, struct proc *));
static paddr_t mfbmmap __P((void *, off_t, int));
static int mfb_alloc_screen __P((void *, const struct wsscreen_descr *,
void **, int *, int *, long *));
static void mfb_free_screen __P((void *, void *));
static int mfb_show_screen __P((void *, void *, int,
void (*) (void *, int, int), void *));
static const struct wsdisplay_accessops mfb_accessops = {
mfbioctl,
mfbmmap,
mfb_alloc_screen,
mfb_free_screen,
mfb_show_screen,
0 /* load_font */
};
int mfb_cnattach __P((tc_addr_t));
static int mfbintr __P((void *));
static void mfbhwinit __P((caddr_t));
static int set_cursor __P((struct mfb_softc *, struct wsdisplay_cursor *));
static int get_cursor __P((struct mfb_softc *, struct wsdisplay_cursor *));
static void set_curpos __P((struct mfb_softc *, struct wsdisplay_curpos *));
/* bit order reverse */
static const u_int8_t flip[256] = {
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
};
static int
mfbmatch(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct tc_attach_args *ta = aux;
if (strncmp("PMAG-AA ", ta->ta_modname, TC_ROM_LLEN) != 0)
return (0);
return (1);
}
static void
mfbattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct mfb_softc *sc = (struct mfb_softc *)self;
struct tc_attach_args *ta = aux;
struct rasops_info *ri;
struct wsemuldisplaydev_attach_args waa;
int console;
volatile register int junk;
console = (ta->ta_addr == mfb_consaddr);
if (console) {
sc->sc_ri = ri = &mfb_console_ri;
sc->nscreens = 1;
}
else {
MALLOC(ri, struct rasops_info *, sizeof(struct rasops_info),
M_DEVBUF, M_NOWAIT);
if (ri == NULL) {
printf(": can't alloc memory\n");
return;
}
memset(ri, 0, sizeof(struct rasops_info));
ri->ri_hw = (void *)ta->ta_addr;
mfb_common_init(ri);
sc->sc_ri = ri;
}
printf(": %dx%d, 1bpp\n", ri->ri_width, ri->ri_height);
sc->sc_vaddr = ta->ta_addr;
sc->sc_cursor.cc_magic.x = MX_MAGIC_X;
sc->sc_cursor.cc_magic.y = MX_MAGIC_Y;
sc->sc_blanked = sc->sc_curenb = 0;
tc_intr_establish(parent, ta->ta_cookie, IPL_TTY, mfbintr, sc);
/* clear any pending interrupts */
*(u_int8_t *)((caddr_t)ri->ri_hw + MX_IREQ_OFFSET) = 0;
junk = *(u_int8_t *)((caddr_t)ri->ri_hw + MX_IREQ_OFFSET);
*(u_int8_t *)((caddr_t)ri->ri_hw + MX_IREQ_OFFSET) = 1;
waa.console = console;
waa.scrdata = &mfb_screenlist;
waa.accessops = &mfb_accessops;
waa.accesscookie = sc;
config_found(self, &waa, wsemuldisplaydevprint);
}
static void
mfb_common_init(ri)
struct rasops_info *ri;
{
caddr_t base;
int cookie;
base = (caddr_t)ri->ri_hw;
/* initialize colormap and cursor hardware */
mfbhwinit(base);
ri->ri_flg = RI_CENTER | RI_FORCEMONO;
ri->ri_depth = 8; /* !! watch out !! */
ri->ri_width = 1280;
ri->ri_height = 1024;
ri->ri_stride = 2048;
ri->ri_bits = base + MX_FB_OFFSET;
/* clear the screen */
memset(ri->ri_bits, 0, ri->ri_stride * ri->ri_height);
wsfont_init();
/* prefer 12 pixel wide font */
cookie = wsfont_find(NULL, 12, 0, 0, WSDISPLAY_FONTORDER_L2R,
WSDISPLAY_FONTORDER_L2R);
if (cookie <= 0)
cookie = wsfont_find(NULL, 0, 0, 0, WSDISPLAY_FONTORDER_L2R,
WSDISPLAY_FONTORDER_L2R);
if (cookie <= 0) {
printf("mfb: font table is empty\n");
return;
}
if (wsfont_lock(cookie, &ri->ri_font)) {
printf("mfb: couldn't lock font\n");
return;
}
ri->ri_wsfcookie = cookie;
rasops_init(ri, 34, 80);
/* XXX shouldn't be global */
mfb_stdscreen.nrows = ri->ri_rows;
mfb_stdscreen.ncols = ri->ri_cols;
mfb_stdscreen.textops = &ri->ri_ops;
mfb_stdscreen.capabilities = ri->ri_caps;
}
static int
mfbioctl(v, cmd, data, flag, p)
void *v;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
struct mfb_softc *sc = v;
struct rasops_info *ri = sc->sc_ri;
int turnoff;
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_MFB;
return (0);
case WSDISPLAYIO_GINFO:
#define wsd_fbip ((struct wsdisplay_fbinfo *)data)
wsd_fbip->height = ri->ri_height;
wsd_fbip->width = ri->ri_width;
wsd_fbip->depth = ri->ri_depth;
wsd_fbip->cmsize = 0;
#undef fbt
return (0);
case WSDISPLAYIO_GETCMAP:
case WSDISPLAYIO_PUTCMAP:
return (EPASSTHROUGH);
case WSDISPLAYIO_SVIDEO:
turnoff = *(int *)data == WSDISPLAYIO_VIDEO_OFF;
if ((sc->sc_blanked == 0) ^ turnoff) {
sc->sc_blanked = turnoff;
#if 0 /* XXX later XXX */
To turn off,
- assign Bt455 cmap[1].green with value 0 (black),
- assign Bt431 register #0 with value 0x04 to hide sprite cursor.
#endif /* XXX XXX XXX */
}
return (0);
case WSDISPLAYIO_GVIDEO:
*(u_int *)data = sc->sc_blanked ?
WSDISPLAYIO_VIDEO_OFF : WSDISPLAYIO_VIDEO_ON;
return (0);
case WSDISPLAYIO_GCURPOS:
*(struct wsdisplay_curpos *)data = sc->sc_cursor.cc_pos;
return (0);
case WSDISPLAYIO_SCURPOS:
set_curpos(sc, (struct wsdisplay_curpos *)data);
sc->sc_changed = WSDISPLAY_CURSOR_DOPOS;
return (0);
case WSDISPLAYIO_GCURMAX:
((struct wsdisplay_curpos *)data)->x =
((struct wsdisplay_curpos *)data)->y = CURSOR_MAX_SIZE;
return (0);
case WSDISPLAYIO_GCURSOR:
return get_cursor(sc, (struct wsdisplay_cursor *)data);
case WSDISPLAYIO_SCURSOR:
return set_cursor(sc, (struct wsdisplay_cursor *)data);
}
return (EPASSTHROUGH);
}
static paddr_t
mfbmmap(v, offset, prot)
void *v;
off_t offset;
int prot;
{
struct mfb_softc *sc = v;
if (offset >= MX_FB_SIZE || offset < 0)
return (-1);
return machine_btop(sc->sc_vaddr + MX_FB_OFFSET + offset);
}
static int
mfb_alloc_screen(v, type, cookiep, curxp, curyp, attrp)
void *v;
const struct wsscreen_descr *type;
void **cookiep;
int *curxp, *curyp;
long *attrp;
{
struct mfb_softc *sc = v;
struct rasops_info *ri = sc->sc_ri;
long defattr;
if (sc->nscreens > 0)
return (ENOMEM);
*cookiep = ri; /* one and only for now */
*curxp = 0;
*curyp = 0;
(*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr);
*attrp = defattr;
sc->nscreens++;
return (0);
}
static void
mfb_free_screen(v, cookie)
void *v;
void *cookie;
{
struct mfb_softc *sc = v;
if (sc->sc_ri == &mfb_console_ri)
panic("mfb_free_screen: console");
sc->nscreens--;
}
static int
mfb_show_screen(v, cookie, waitok, cb, cbarg)
void *v;
void *cookie;
int waitok;
void (*cb) __P((void *, int, int));
void *cbarg;
{
return (0);
}
/* EXPORT */ int
mfb_cnattach(addr)
tc_addr_t addr;
{
struct rasops_info *ri;
long defattr;
ri = &mfb_console_ri;
ri->ri_hw = (void *)addr;
mfb_common_init(ri);
(*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr);
wsdisplay_cnattach(&mfb_stdscreen, ri, 0, 0, defattr);
mfb_consaddr = addr;
return (0);
}
static int
mfbintr(arg)
void *arg;
{
struct mfb_softc *sc = arg;
caddr_t base, vdac, curs;
int v;
volatile register int junk;
base = (caddr_t)sc->sc_ri->ri_hw;
junk = *(u_int8_t *)(base + MX_IREQ_OFFSET);
#if 0
*(u_int8_t *)(base + MX_IREQ_OFFSET) = 0;
#endif
if (sc->sc_changed == 0)
goto done;
vdac = base + MX_BT455_OFFSET;
curs = base + MX_BT431_OFFSET;
v = sc->sc_changed;
if (v & WSDISPLAY_CURSOR_DOCUR) {
SELECT431(curs, BT431_REG_COMMAND);
HALF(curs, bt_ctl) = (sc->sc_curenb) ? 0x4444 : 0x0404;
}
if (v & (WSDISPLAY_CURSOR_DOPOS | WSDISPLAY_CURSOR_DOHOT)) {
int x, y;
u_int16_t twin;
x = sc->sc_cursor.cc_pos.x - sc->sc_cursor.cc_hot.x;
y = sc->sc_cursor.cc_pos.y - sc->sc_cursor.cc_hot.y;
x += sc->sc_cursor.cc_magic.x;
y += sc->sc_cursor.cc_magic.y;
SELECT431(curs, BT431_REG_CURSOR_X_LOW);
HALF(curs, bt_ctl) = TWIN_LO(x); tc_wmb();
HALF(curs, bt_ctl) = TWIN_HI(x); tc_wmb();
HALF(curs, bt_ctl) = TWIN_LO(y); tc_wmb();
HALF(curs, bt_ctl) = TWIN_HI(y); tc_wmb();
}
if (v & WSDISPLAY_CURSOR_DOCMAP) {
u_int8_t *cp = sc->sc_cursor.cc_color;
SELECT455(vdac, 8);
BYTE(vdac, bt_cmap) = 0; tc_wmb();
BYTE(vdac, bt_cmap) = cp[1]; tc_wmb();
BYTE(vdac, bt_cmap) = 0; tc_wmb();
BYTE(vdac, bt_cmap) = 0; tc_wmb();
BYTE(vdac, bt_cmap) = cp[1]; tc_wmb();
BYTE(vdac, bt_cmap) = 0; tc_wmb();
BYTE(vdac, bt_ovly) = 0; tc_wmb();
BYTE(vdac, bt_ovly) = cp[0]; tc_wmb();
BYTE(vdac, bt_ovly) = 0; tc_wmb();
}
if (v & WSDISPLAY_CURSOR_DOSHAPE) {
u_int8_t *ip, *mp, img, msk;
int bcnt;
ip = (u_int8_t *)sc->sc_cursor.cc_image;
mp = (u_int8_t *)(sc->sc_cursor.cc_image + CURSOR_MAX_SIZE);
bcnt = 0;
SELECT431(curs, BT431_REG_CRAM_BASE);
/* 64 pixel scan line is consisted with 16 byte cursor ram */
while (bcnt < sc->sc_cursor.cc_size.y * 16) {
/* pad right half 32 pixel when smaller than 33 */
if ((bcnt & 0x8) && sc->sc_cursor.cc_size.x < 33) {
HALF(curs, bt_ram) = 0;
tc_wmb();
}
else {
img = *ip++;
msk = *mp++;
img &= msk; /* cookie off image */
HALF(curs, bt_ram)
= (flip[msk] << 8) | flip[img];
tc_wmb();
}
bcnt += 2;
}
/* pad unoccupied scan lines */
while (bcnt < CURSOR_MAX_SIZE * 16) {
HALF(curs, bt_ram) = 0;
tc_wmb();
bcnt += 2;
}
}
sc->sc_changed = 0;
done:
return (1);
}
static void
mfbhwinit(mfbbase)
caddr_t mfbbase;
{
caddr_t vdac, curs;
int i;
vdac = mfbbase + MX_BT455_OFFSET;
curs = mfbbase + MX_BT431_OFFSET;
SELECT431(curs, BT431_REG_COMMAND);
HALF(curs, bt_ctl) = 0x0404; tc_wmb();
HALF(curs, bt_ctl) = 0; /* XLO */ tc_wmb();
HALF(curs, bt_ctl) = 0; /* XHI */ tc_wmb();
HALF(curs, bt_ctl) = 0; /* YLO */ tc_wmb();
HALF(curs, bt_ctl) = 0; /* YHI */ tc_wmb();
HALF(curs, bt_ctl) = 0; /* XWLO */ tc_wmb();
HALF(curs, bt_ctl) = 0; /* XWHI */ tc_wmb();
HALF(curs, bt_ctl) = 0; /* WYLO */ tc_wmb();
HALF(curs, bt_ctl) = 0; /* WYLO */ tc_wmb();
HALF(curs, bt_ctl) = 0; /* WWLO */ tc_wmb();
HALF(curs, bt_ctl) = 0; /* WWHI */ tc_wmb();
HALF(curs, bt_ctl) = 0; /* WHLO */ tc_wmb();
HALF(curs, bt_ctl) = 0; /* WHHI */ tc_wmb();
/* 0: black, 1: white, 8,9: cursor mask, ovly: cursor image */
SELECT455(vdac, 0);
BYTE(vdac, bt_cmap) = 0; tc_wmb();
BYTE(vdac, bt_cmap) = 0; tc_wmb();
BYTE(vdac, bt_cmap) = 0; tc_wmb();
BYTE(vdac, bt_cmap) = 0; tc_wmb();
BYTE(vdac, bt_cmap) = 0xff; tc_wmb();
BYTE(vdac, bt_cmap) = 0; tc_wmb();
for (i = 2; i < 16; i++) {
BYTE(vdac, bt_cmap) = 0; tc_wmb();
BYTE(vdac, bt_cmap) = 0; tc_wmb();
BYTE(vdac, bt_cmap) = 0; tc_wmb();
}
BYTE(vdac, bt_ovly) = 0; tc_wmb();
BYTE(vdac, bt_ovly) = 0xff; tc_wmb();
BYTE(vdac, bt_ovly) = 0; tc_wmb();
SELECT431(curs, BT431_REG_CRAM_BASE);
for (i = 0; i < 512; i++) {
HALF(curs, bt_ram) = 0; tc_wmb();
}
}
static int
set_cursor(sc, p)
struct mfb_softc *sc;
struct wsdisplay_cursor *p;
{
#define cc (&sc->sc_cursor)
u_int v, count, index;
v = p->which;
if (v & WSDISPLAY_CURSOR_DOCMAP) {
index = p->cmap.index;
count = p->cmap.count;
if (index >= 2 || (index + count) > 2)
return (EINVAL);
if (!uvm_useracc(p->cmap.red, count, B_READ))
return (EFAULT);
}
if (v & WSDISPLAY_CURSOR_DOSHAPE) {
if (p->size.x > CURSOR_MAX_SIZE || p->size.y > CURSOR_MAX_SIZE)
return (EINVAL);
count = ((p->size.x < 33) ? 4 : 8) * p->size.y;
if (!uvm_useracc(p->image, count, B_READ) ||
!uvm_useracc(p->mask, count, B_READ))
return (EFAULT);
}
if (v & WSDISPLAY_CURSOR_DOCUR)
sc->sc_curenb = p->enable;
if (v & WSDISPLAY_CURSOR_DOPOS)
set_curpos(sc, &p->pos);
if (v & WSDISPLAY_CURSOR_DOHOT)
cc->cc_hot = p->hot;
if (v & WSDISPLAY_CURSOR_DOCMAP)
copyin(p->cmap.red, &cc->cc_color[index], count);
if (v & WSDISPLAY_CURSOR_DOSHAPE) {
cc->cc_size = p->size;
memset(cc->cc_image, 0, sizeof cc->cc_image);
copyin(p->image, cc->cc_image, count);
copyin(p->mask, cc->cc_image+CURSOR_MAX_SIZE, count);
}
sc->sc_changed = v;
return (0);
#undef cc
}
static int
get_cursor(sc, p)
struct mfb_softc *sc;
struct wsdisplay_cursor *p;
{
return (EPASSTHROUGH); /* XXX */
}
static void
set_curpos(sc, curpos)
struct mfb_softc *sc;
struct wsdisplay_curpos *curpos;
{
struct rasops_info *ri = sc->sc_ri;
int x = curpos->x, y = curpos->y;
if (y < 0)
y = 0;
else if (y > ri->ri_height)
y = ri->ri_height;
if (x < 0)
x = 0;
else if (x > ri->ri_width)
x = ri->ri_width;
sc->sc_cursor.cc_pos.x = x;
sc->sc_cursor.cc_pos.y = y;
}
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