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|
/* $NetBSD: genfb.c,v 1.90 2022/08/01 23:30:10 riastradh Exp $ */
/*-
* Copyright (c) 2007 Michael Lorenz
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: genfb.c,v 1.90 2022/08/01 23:30:10 riastradh Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/mutex.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/kmem.h>
#include <sys/reboot.h>
#include <uvm/uvm_extern.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/rasops/rasops.h>
#include <dev/wsfont/wsfont.h>
#include <dev/wscons/wsdisplay_vconsvar.h>
#include <dev/wsfb/genfbvar.h>
#include <dev/videomode/videomode.h>
#include <dev/videomode/edidvar.h>
#ifdef GENFB_DISABLE_TEXT
#define DISABLESPLASH (boothowto & (RB_SINGLE | RB_USERCONF | RB_ASKNAME | \
AB_VERBOSE | AB_DEBUG) )
#endif
#ifdef _KERNEL_OPT
#include "opt_genfb.h"
#include "opt_wsfb.h"
#include "opt_rasops.h"
#endif
#ifdef GENFB_DEBUG
#define GPRINTF panic
#else
#define GPRINTF aprint_debug
#endif
#define GENFB_BRIGHTNESS_STEP 15
#define GENFB_CHAR_WIDTH_MM 3
struct genfb_private {
struct genfb_ops sc_ops;
struct vcons_screen sc_console_screen;
struct wsscreen_descr sc_defaultscreen_descr;
const struct wsscreen_descr *sc_screens[1];
struct wsscreen_list sc_screenlist;
struct genfb_colormap_callback *sc_cmcb;
struct genfb_parameter_callback *sc_backlight;
struct genfb_parameter_callback *sc_brightness;
struct genfb_mode_callback *sc_modecb;
int sc_backlight_level, sc_backlight_on;
void *sc_shadowfb;
bool sc_enable_shadowfb;
int sc_mode;
u_char sc_cmap_red[256];
u_char sc_cmap_green[256];
u_char sc_cmap_blue[256];
bool sc_want_clear;
#ifdef SPLASHSCREEN
struct splash_info sc_splash;
#endif
struct wsdisplay_accessops sc_accessops;
#if GENFB_GLYPHCACHE > 0
/*
* The generic glyphcache code makes a bunch of assumptions that are
* true for most graphics hardware with a directly supported blitter.
* For example it assume that
* - VRAM access from the host is expensive
* - copying data around in VRAM is cheap and can happen in parallel
* to the host CPU
* -> therefore we draw glyphs normally if we have to, so the ( assumed
* to be hardware assisted ) driver supplied putchar() method doesn't
* need to be glyphcache aware, then copy them away for later use
* for genfb things are a bit different. On most hardware:
* - VRAM access from the host is still expensive
* - copying data around in VRAM is also expensive since we don't have
* a blitter and VRAM is mapped uncached
* - VRAM reads are usually slower than writes ( write combining and
* such help writes but not reads, and VRAM might be behind an
* asymmetric bus like AGP ) and must be avoided, both are much
* slower than main memory
* -> therefore we cache glyphs in main memory, no reason to map it
* uncached, we draw into the cache first and then copy the glyph
* into video memory to avoid framebuffer reads and to allow more
* efficient write accesses than putchar() would offer
* Because of this we can't use the generic code but we can recycle a
* few data structures.
*/
uint8_t *sc_cache;
struct rasops_info sc_cache_ri;
void (*sc_putchar)(void *, int, int, u_int, long);
int sc_cache_cells;
int sc_nbuckets; /* buckets allocated */
gc_bucket *sc_buckets; /* we allocate as many as we can get into ram */
int sc_attrmap[256]; /* mapping a colour attribute to a bucket */
#endif
};
static int genfb_ioctl(void *, void *, u_long, void *, int, struct lwp *);
static paddr_t genfb_mmap(void *, void *, off_t, int);
static void genfb_pollc(void *, int);
static void genfb_init_screen(void *, struct vcons_screen *, int, long *);
static int genfb_calc_hsize(struct genfb_softc *);
static int genfb_calc_cols(struct genfb_softc *, struct rasops_info *);
static int genfb_putcmap(struct genfb_softc *, struct wsdisplay_cmap *);
static int genfb_getcmap(struct genfb_softc *, struct wsdisplay_cmap *);
static int genfb_putpalreg(struct genfb_softc *, uint8_t, uint8_t,
uint8_t, uint8_t);
static void genfb_init_palette(struct genfb_softc *);
static void genfb_brightness_up(device_t);
static void genfb_brightness_down(device_t);
#if GENFB_GLYPHCACHE > 0
static int genfb_setup_glyphcache(struct genfb_softc *, long);
static void genfb_putchar(void *, int, int, u_int, long);
#endif
extern const u_char rasops_cmap[768];
static int genfb_cnattach_called = 0;
static int genfb_enabled = 1;
static struct genfb_softc *genfb_softc = NULL;
void
genfb_init(struct genfb_softc *sc)
{
struct genfb_private *scp;
prop_dictionary_t dict;
uint64_t cmap_cb, pmf_cb, mode_cb, bl_cb, br_cb, fbaddr;
uint64_t fboffset;
bool console;
scp = sc->sc_private = kmem_zalloc(sizeof(*sc->sc_private), KM_SLEEP);
dict = device_properties(sc->sc_dev);
#ifdef GENFB_DEBUG
printf("%s", prop_dictionary_externalize(dict));
#endif
prop_dictionary_get_bool(dict, "is_console", &console);
if (!prop_dictionary_get_uint32(dict, "width", &sc->sc_width)) {
GPRINTF("no width property\n");
goto bad;
}
if (!prop_dictionary_get_uint32(dict, "height", &sc->sc_height)) {
GPRINTF("no height property\n");
goto bad;
}
if (!prop_dictionary_get_uint32(dict, "depth", &sc->sc_depth)) {
GPRINTF("no depth property\n");
goto bad;
}
if (!prop_dictionary_get_uint64(dict, "address", &fboffset)) {
GPRINTF("no address property\n");
goto bad;
}
sc->sc_fboffset = (bus_addr_t)fboffset;
sc->sc_fbaddr = NULL;
if (prop_dictionary_get_uint64(dict, "virtual_address", &fbaddr)) {
sc->sc_fbaddr = (void *)(uintptr_t)fbaddr;
}
scp->sc_shadowfb = NULL;
if (!prop_dictionary_get_bool(dict, "enable_shadowfb",
&scp->sc_enable_shadowfb))
#ifdef GENFB_SHADOWFB
scp->sc_enable_shadowfb = true;
#else
scp->sc_enable_shadowfb = false;
#endif
if (!prop_dictionary_get_uint32(dict, "linebytes", &sc->sc_stride))
sc->sc_stride = (sc->sc_width * sc->sc_depth) >> 3;
/*
* deal with a bug in the Raptor firmware which always sets
* stride = width even when depth != 8
*/
if (sc->sc_stride < sc->sc_width * (sc->sc_depth >> 3))
sc->sc_stride = sc->sc_width * (sc->sc_depth >> 3);
sc->sc_fbsize = sc->sc_height * sc->sc_stride;
/* optional colour map callback */
scp->sc_cmcb = NULL;
if (prop_dictionary_get_uint64(dict, "cmap_callback", &cmap_cb)) {
if (cmap_cb != 0)
scp->sc_cmcb = (void *)(vaddr_t)cmap_cb;
}
/* optional pmf callback */
sc->sc_pmfcb = NULL;
if (prop_dictionary_get_uint64(dict, "pmf_callback", &pmf_cb)) {
if (pmf_cb != 0)
sc->sc_pmfcb = (void *)(vaddr_t)pmf_cb;
}
/* optional mode callback */
scp->sc_modecb = NULL;
if (prop_dictionary_get_uint64(dict, "mode_callback", &mode_cb)) {
if (mode_cb != 0)
scp->sc_modecb = (void *)(vaddr_t)mode_cb;
}
/* optional backlight control callback */
scp->sc_backlight = NULL;
if (prop_dictionary_get_uint64(dict, "backlight_callback", &bl_cb)) {
if (bl_cb != 0) {
scp->sc_backlight = (void *)(vaddr_t)bl_cb;
aprint_naive_dev(sc->sc_dev,
"enabling backlight control\n");
}
}
/* optional brightness control callback */
scp->sc_brightness = NULL;
if (prop_dictionary_get_uint64(dict, "brightness_callback", &br_cb)) {
if (br_cb != 0) {
scp->sc_brightness = (void *)(vaddr_t)br_cb;
aprint_naive_dev(sc->sc_dev,
"enabling brightness control\n");
if (console &&
scp->sc_brightness->gpc_upd_parameter != NULL) {
pmf_event_register(sc->sc_dev,
PMFE_DISPLAY_BRIGHTNESS_UP,
genfb_brightness_up, TRUE);
pmf_event_register(sc->sc_dev,
PMFE_DISPLAY_BRIGHTNESS_DOWN,
genfb_brightness_down, TRUE);
}
}
}
return;
bad: kmem_free(sc->sc_private, sizeof(*sc->sc_private));
sc->sc_private = NULL;
}
int
genfb_attach(struct genfb_softc *sc, struct genfb_ops *ops)
{
struct genfb_private *scp = sc->sc_private;
struct wsemuldisplaydev_attach_args aa;
prop_dictionary_t dict;
struct rasops_info *ri;
paddr_t fb_phys;
uint16_t crow;
long defattr;
bool console;
#ifdef SPLASHSCREEN
int i, j;
int error = ENXIO;
#endif
KASSERTMSG(scp != NULL, "missing genfb_init");
dict = device_properties(sc->sc_dev);
prop_dictionary_get_bool(dict, "is_console", &console);
if (prop_dictionary_get_uint16(dict, "cursor-row", &crow) == false)
crow = 0;
if (prop_dictionary_get_bool(dict, "clear-screen", &scp->sc_want_clear)
== false)
scp->sc_want_clear = true;
fb_phys = (paddr_t)sc->sc_fboffset;
if (fb_phys == 0) {
KASSERT(sc->sc_fbaddr != NULL);
(void)pmap_extract(pmap_kernel(), (vaddr_t)sc->sc_fbaddr,
&fb_phys);
}
aprint_verbose_dev(sc->sc_dev, "framebuffer at %p, size %dx%d, depth %d, "
"stride %d\n",
fb_phys ? (void *)(intptr_t)fb_phys : sc->sc_fbaddr,
sc->sc_width, sc->sc_height, sc->sc_depth, sc->sc_stride);
scp->sc_defaultscreen_descr = (struct wsscreen_descr){
"default",
0, 0,
NULL,
8, 16,
WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE |
WSSCREEN_RESIZE,
NULL
};
scp->sc_screens[0] = &scp->sc_defaultscreen_descr;
scp->sc_screenlist = (struct wsscreen_list){1, scp->sc_screens};
memcpy(&scp->sc_ops, ops, sizeof(struct genfb_ops));
scp->sc_mode = WSDISPLAYIO_MODE_EMUL;
if (scp->sc_modecb != NULL)
scp->sc_modecb->gmc_setmode(sc, scp->sc_mode);
scp->sc_accessops.ioctl = genfb_ioctl;
scp->sc_accessops.mmap = genfb_mmap;
scp->sc_accessops.pollc = genfb_pollc;
if (scp->sc_enable_shadowfb) {
scp->sc_shadowfb = kmem_alloc(sc->sc_fbsize, KM_SLEEP);
if (scp->sc_want_clear == false) {
memcpy(scp->sc_shadowfb, sc->sc_fbaddr, sc->sc_fbsize);
}
aprint_verbose_dev(sc->sc_dev,
"shadow framebuffer enabled, size %zu KB\n",
sc->sc_fbsize >> 10);
}
vcons_init(&sc->vd, sc, &scp->sc_defaultscreen_descr,
&scp->sc_accessops);
sc->vd.init_screen = genfb_init_screen;
/* Do not print anything between this point and the screen
* clear operation below. Otherwise it will be lost. */
ri = &scp->sc_console_screen.scr_ri;
vcons_init_screen(&sc->vd, &scp->sc_console_screen, 1,
&defattr);
scp->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;
#if GENFB_GLYPHCACHE > 0
genfb_setup_glyphcache(sc, defattr);
#endif
#ifdef SPLASHSCREEN
/*
* If system isn't going to go multiuser, or user has requested to see
* boot text, don't render splash screen immediately
*/
if (DISABLESPLASH)
#endif
vcons_redraw_screen(&scp->sc_console_screen);
scp->sc_defaultscreen_descr.textops = &ri->ri_ops;
scp->sc_defaultscreen_descr.capabilities = ri->ri_caps;
scp->sc_defaultscreen_descr.nrows = ri->ri_rows;
scp->sc_defaultscreen_descr.ncols = ri->ri_cols;
if (crow >= ri->ri_rows) {
crow = 0;
scp->sc_want_clear = 1;
}
if (console)
wsdisplay_cnattach(&scp->sc_defaultscreen_descr, ri, 0, crow,
defattr);
/* Clear the whole screen to bring it to a known state. */
if (scp->sc_want_clear)
(*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, defattr);
#ifdef SPLASHSCREEN
j = 0;
for (i = 0; i < uimin(1 << sc->sc_depth, 256); i++) {
if (i >= SPLASH_CMAP_OFFSET &&
i < SPLASH_CMAP_OFFSET + SPLASH_CMAP_SIZE) {
splash_get_cmap(i,
&scp->sc_cmap_red[i],
&scp->sc_cmap_green[i],
&scp->sc_cmap_blue[i]);
} else {
scp->sc_cmap_red[i] = rasops_cmap[j];
scp->sc_cmap_green[i] = rasops_cmap[j + 1];
scp->sc_cmap_blue[i] = rasops_cmap[j + 2];
}
j += 3;
}
genfb_restore_palette(sc);
scp->sc_splash.si_depth = sc->sc_depth;
scp->sc_splash.si_bits = scp->sc_console_screen.scr_ri.ri_origbits;
scp->sc_splash.si_hwbits = sc->sc_fbaddr;
scp->sc_splash.si_width = sc->sc_width;
scp->sc_splash.si_height = sc->sc_height;
scp->sc_splash.si_stride = sc->sc_stride;
scp->sc_splash.si_fillrect = NULL;
if (!DISABLESPLASH) {
error = splash_render(&scp->sc_splash,
SPLASH_F_CENTER|SPLASH_F_FILL);
if (error) {
SCREEN_ENABLE_DRAWING(&scp->sc_console_screen);
genfb_init_palette(sc);
vcons_replay_msgbuf(&scp->sc_console_screen);
}
}
#else
genfb_init_palette(sc);
if (console && (boothowto & (AB_SILENT|AB_QUIET)) == 0)
vcons_replay_msgbuf(&scp->sc_console_screen);
#endif
if (genfb_softc == NULL)
genfb_softc = sc;
aa.console = console;
aa.scrdata = &scp->sc_screenlist;
aa.accessops = &scp->sc_accessops;
aa.accesscookie = &sc->vd;
#ifdef GENFB_DISABLE_TEXT
if (!DISABLESPLASH && error == 0)
SCREEN_DISABLE_DRAWING(&scp->sc_console_screen);
#endif
config_found(sc->sc_dev, &aa, wsemuldisplaydevprint,
CFARGS(.iattr = "wsemuldisplaydev"));
return 0;
}
static int
genfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
struct lwp *l)
{
struct vcons_data *vd = v;
struct genfb_softc *sc = vd->cookie;
struct genfb_private *scp = sc->sc_private;
struct wsdisplay_fbinfo *wdf;
struct vcons_screen *ms = vd->active;
struct wsdisplay_param *param;
int new_mode, error, val, ret;
switch (cmd) {
case WSDISPLAYIO_GINFO:
if (ms == NULL)
return ENODEV;
wdf = (void *)data;
wdf->height = ms->scr_ri.ri_height;
wdf->width = ms->scr_ri.ri_width;
wdf->depth = ms->scr_ri.ri_depth;
wdf->cmsize = 256;
return 0;
case WSDISPLAYIO_GETCMAP:
return genfb_getcmap(sc,
(struct wsdisplay_cmap *)data);
case WSDISPLAYIO_PUTCMAP:
return genfb_putcmap(sc,
(struct wsdisplay_cmap *)data);
case WSDISPLAYIO_LINEBYTES:
*(u_int *)data = sc->sc_stride;
return 0;
case WSDISPLAYIO_SMODE:
new_mode = *(int *)data;
/* notify the bus backend */
error = 0;
if (scp->sc_ops.genfb_ioctl) {
error = scp->sc_ops.genfb_ioctl(sc, vs,
cmd, data, flag, l);
}
if (error && error != EPASSTHROUGH)
return error;
if (new_mode != scp->sc_mode) {
scp->sc_mode = new_mode;
if (scp->sc_modecb != NULL) {
scp->sc_modecb->gmc_setmode(sc,
scp->sc_mode);
}
if (new_mode == WSDISPLAYIO_MODE_EMUL) {
genfb_restore_palette(sc);
vcons_redraw_screen(ms);
}
}
return 0;
case WSDISPLAYIO_SSPLASH:
#if defined(SPLASHSCREEN)
if(*(int *)data == 1) {
SCREEN_DISABLE_DRAWING(&scp->sc_console_screen);
splash_render(&scp->sc_splash,
SPLASH_F_CENTER|SPLASH_F_FILL);
} else {
SCREEN_ENABLE_DRAWING(&scp->sc_console_screen);
genfb_init_palette(sc);
}
vcons_redraw_screen(ms);
return 0;
#else
return ENODEV;
#endif
case WSDISPLAYIO_GETPARAM:
param = (struct wsdisplay_param *)data;
switch (param->param) {
case WSDISPLAYIO_PARAM_BRIGHTNESS:
if (scp->sc_brightness == NULL)
return EPASSTHROUGH;
param->min = 0;
param->max = 255;
return scp->sc_brightness->gpc_get_parameter(
scp->sc_brightness->gpc_cookie,
¶m->curval);
case WSDISPLAYIO_PARAM_BACKLIGHT:
if (scp->sc_backlight == NULL)
return EPASSTHROUGH;
param->min = 0;
param->max = 1;
return scp->sc_backlight->gpc_get_parameter(
scp->sc_backlight->gpc_cookie,
¶m->curval);
}
return EPASSTHROUGH;
case WSDISPLAYIO_SETPARAM:
param = (struct wsdisplay_param *)data;
switch (param->param) {
case WSDISPLAYIO_PARAM_BRIGHTNESS:
if (scp->sc_brightness == NULL)
return EPASSTHROUGH;
val = param->curval;
if (val < 0) val = 0;
if (val > 255) val = 255;
return scp->sc_brightness->gpc_set_parameter(
scp->sc_brightness->gpc_cookie, val);
case WSDISPLAYIO_PARAM_BACKLIGHT:
if (scp->sc_backlight == NULL)
return EPASSTHROUGH;
val = param->curval;
if (val < 0) val = 0;
if (val > 1) val = 1;
return scp->sc_backlight->gpc_set_parameter(
scp->sc_backlight->gpc_cookie, val);
}
return EPASSTHROUGH;
}
ret = EPASSTHROUGH;
if (scp->sc_ops.genfb_ioctl)
ret = scp->sc_ops.genfb_ioctl(sc, vs, cmd, data, flag, l);
if (ret != EPASSTHROUGH)
return ret;
/*
* XXX
* handle these only if there either is no ioctl() handler or it didn't
* know how to deal with them. This allows bus frontends to override
* them but still provides fallback implementations
*/
switch (cmd) {
case WSDISPLAYIO_GET_EDID: {
struct wsdisplayio_edid_info *d = data;
return wsdisplayio_get_edid(sc->sc_dev, d);
}
case WSDISPLAYIO_GET_FBINFO: {
struct wsdisplayio_fbinfo *fbi = data;
return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi);
}
}
return EPASSTHROUGH;
}
static paddr_t
genfb_mmap(void *v, void *vs, off_t offset, int prot)
{
struct vcons_data *vd = v;
struct genfb_softc *sc = vd->cookie;
struct genfb_private *scp = sc->sc_private;
if (scp->sc_ops.genfb_mmap)
return scp->sc_ops.genfb_mmap(sc, vs, offset, prot);
return -1;
}
static void
genfb_pollc(void *v, int on)
{
struct vcons_data *vd = v;
struct genfb_softc *sc = vd->cookie;
if (sc == NULL)
return;
if (on)
genfb_enable_polling(sc->sc_dev);
else
genfb_disable_polling(sc->sc_dev);
}
static void
genfb_init_screen(void *cookie, struct vcons_screen *scr,
int existing, long *defattr)
{
struct genfb_softc *sc = cookie;
struct genfb_private *scp = sc->sc_private;
struct rasops_info *ri = &scr->scr_ri;
int wantcols;
bool is_bgr, is_swapped, is_10bit;
ri->ri_depth = sc->sc_depth;
ri->ri_width = sc->sc_width;
ri->ri_height = sc->sc_height;
ri->ri_stride = sc->sc_stride;
ri->ri_flg = RI_CENTER;
if (scp->sc_want_clear)
ri->ri_flg |= RI_FULLCLEAR;
scr->scr_flags |= VCONS_LOADFONT;
if (scp->sc_shadowfb != NULL) {
ri->ri_hwbits = (char *)sc->sc_fbaddr;
ri->ri_bits = (char *)scp->sc_shadowfb;
} else {
ri->ri_bits = (char *)sc->sc_fbaddr;
scr->scr_flags |= VCONS_DONT_READ;
}
if (existing && scp->sc_want_clear)
ri->ri_flg |= RI_CLEAR;
switch (ri->ri_depth) {
case 32:
case 24:
ri->ri_flg |= RI_ENABLE_ALPHA;
is_bgr = false;
prop_dictionary_get_bool(device_properties(sc->sc_dev),
"is_bgr", &is_bgr);
is_swapped = false;
prop_dictionary_get_bool(device_properties(sc->sc_dev),
"is_swapped", &is_swapped);
is_10bit = false;
prop_dictionary_get_bool(device_properties(sc->sc_dev),
"is_10bit", &is_10bit);
const int bits = is_10bit ? 10 : 8;
ri->ri_rnum = ri->ri_gnum = ri->ri_bnum = bits;
if (is_bgr) {
/* someone requested BGR */
ri->ri_rpos = bits * 0;
ri->ri_gpos = bits * 1;
ri->ri_bpos = bits * 2;
} else if (is_swapped) {
/* byte-swapped, must be 32 bpp */
KASSERT(ri->ri_depth == 32);
KASSERT(bits == 8);
ri->ri_rpos = 8;
ri->ri_gpos = 16;
ri->ri_bpos = 24;
} else {
/* assume RGB */
ri->ri_rpos = bits * 2;
ri->ri_gpos = bits * 1;
ri->ri_bpos = bits * 0;
}
break;
case 16:
case 15:
ri->ri_flg |= RI_ENABLE_ALPHA;
break;
case 8:
if (scp->sc_cmcb != NULL)
ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB;
break;
case 2:
ri->ri_flg |= RI_ENABLE_ALPHA;
break;
default:
break;
}
wantcols = genfb_calc_cols(sc, ri);
rasops_init(ri, 0, wantcols);
ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE |
WSSCREEN_RESIZE;
rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
sc->sc_width / ri->ri_font->fontwidth);
ri->ri_hw = scr;
#if GENFB_GLYPHCACHE > 0
scp->sc_putchar = ri->ri_ops.putchar;
ri->ri_ops.putchar = genfb_putchar;
#endif
#ifdef GENFB_DISABLE_TEXT
if (scr == &scp->sc_console_screen && !DISABLESPLASH)
SCREEN_DISABLE_DRAWING(&scp->sc_console_screen);
#endif
}
/* Returns the width of the display in millimeters, or 0 if not known. */
static int
genfb_calc_hsize(struct genfb_softc *sc)
{
device_t dev = sc->sc_dev;
prop_dictionary_t dict = device_properties(dev);
prop_data_t edid_data;
struct edid_info *edid;
const char *edid_ptr;
int hsize;
edid_data = prop_dictionary_get(dict, "EDID");
if (edid_data == NULL || prop_data_size(edid_data) < 128)
return 0;
edid = kmem_alloc(sizeof(*edid), KM_SLEEP);
edid_ptr = prop_data_value(edid_data);
if (edid_parse(__UNCONST(edid_ptr), edid) == 0)
hsize = (int)edid->edid_max_hsize * 10;
else
hsize = 0;
kmem_free(edid, sizeof(*edid));
return hsize;
}
/* Return the minimum number of character columns based on DPI */
static int
genfb_calc_cols(struct genfb_softc *sc, struct rasops_info *ri)
{
const int hsize = genfb_calc_hsize(sc);
if (hsize != 0) {
ri->ri_flg |= RI_PREFER_WIDEFONT;
}
return MAX(RASOPS_DEFAULT_WIDTH, hsize / GENFB_CHAR_WIDTH_MM);
}
static int
genfb_putcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm)
{
struct genfb_private *scp = sc->sc_private;
u_char *r, *g, *b;
u_int index = cm->index;
u_int count = cm->count;
int i, error;
u_char rbuf[256], gbuf[256], bbuf[256];
#ifdef GENFB_DEBUG
aprint_debug("putcmap: %d %d\n",index, count);
#endif
if (index >= 256 || count > 256 || index + count > 256)
return EINVAL;
error = copyin(cm->red, &rbuf[index], count);
if (error)
return error;
error = copyin(cm->green, &gbuf[index], count);
if (error)
return error;
error = copyin(cm->blue, &bbuf[index], count);
if (error)
return error;
memcpy(&scp->sc_cmap_red[index], &rbuf[index], count);
memcpy(&scp->sc_cmap_green[index], &gbuf[index], count);
memcpy(&scp->sc_cmap_blue[index], &bbuf[index], count);
r = &scp->sc_cmap_red[index];
g = &scp->sc_cmap_green[index];
b = &scp->sc_cmap_blue[index];
for (i = 0; i < count; i++) {
genfb_putpalreg(sc, index, *r, *g, *b);
index++;
r++, g++, b++;
}
return 0;
}
static int
genfb_getcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm)
{
struct genfb_private *scp = sc->sc_private;
u_int index = cm->index;
u_int count = cm->count;
int error;
if (index >= 256 || count > 256 || index + count > 256)
return EINVAL;
error = copyout(&scp->sc_cmap_red[index], cm->red, count);
if (error)
return error;
error = copyout(&scp->sc_cmap_green[index], cm->green, count);
if (error)
return error;
error = copyout(&scp->sc_cmap_blue[index], cm->blue, count);
if (error)
return error;
return 0;
}
void
genfb_restore_palette(struct genfb_softc *sc)
{
struct genfb_private *scp = sc->sc_private;
int i;
if (sc->sc_depth <= 8) {
for (i = 0; i < (1 << sc->sc_depth); i++) {
genfb_putpalreg(sc, i, scp->sc_cmap_red[i],
scp->sc_cmap_green[i], scp->sc_cmap_blue[i]);
}
}
}
static void
genfb_init_palette(struct genfb_softc *sc)
{
struct genfb_private *scp = sc->sc_private;
int i, j, tmp;
if (sc->sc_depth == 8) {
/* generate an r3g3b2 colour map */
for (i = 0; i < 256; i++) {
tmp = i & 0xe0;
/*
* replicate bits so 0xe0 maps to a red value of 0xff
* in order to make white look actually white
*/
tmp |= (tmp >> 3) | (tmp >> 6);
scp->sc_cmap_red[i] = tmp;
tmp = (i & 0x1c) << 3;
tmp |= (tmp >> 3) | (tmp >> 6);
scp->sc_cmap_green[i] = tmp;
tmp = (i & 0x03) << 6;
tmp |= tmp >> 2;
tmp |= tmp >> 4;
scp->sc_cmap_blue[i] = tmp;
genfb_putpalreg(sc, i, scp->sc_cmap_red[i],
scp->sc_cmap_green[i],
scp->sc_cmap_blue[i]);
}
} else {
/* steal rasops' ANSI cmap */
j = 0;
for (i = 0; i < 256; i++) {
scp->sc_cmap_red[i] = rasops_cmap[j];
scp->sc_cmap_green[i] = rasops_cmap[j + 1];
scp->sc_cmap_blue[i] = rasops_cmap[j + 2];
j += 3;
}
}
}
static int
genfb_putpalreg(struct genfb_softc *sc, uint8_t idx, uint8_t r, uint8_t g,
uint8_t b)
{
struct genfb_private *scp = sc->sc_private;
if (scp->sc_cmcb) {
scp->sc_cmcb->gcc_set_mapreg(scp->sc_cmcb->gcc_cookie,
idx, r, g, b);
}
return 0;
}
void
genfb_cnattach(void)
{
genfb_cnattach_called = 1;
}
int
genfb_cndetach(void)
{
if (genfb_cnattach_called) {
genfb_cnattach_called = 0;
return 1;
}
return 0;
}
void
genfb_disable(void)
{
genfb_enabled = 0;
}
int
genfb_is_console(void)
{
return genfb_cnattach_called;
}
int
genfb_is_enabled(void)
{
return genfb_enabled;
}
int
genfb_borrow(bus_addr_t addr, bus_space_handle_t *hdlp)
{
struct genfb_softc *sc = genfb_softc;
if (sc && sc->sc_private && sc->sc_private->sc_ops.genfb_borrow)
return sc->sc_private->sc_ops.genfb_borrow(sc, addr, hdlp);
return 0;
}
static void
genfb_brightness_up(device_t dev)
{
struct genfb_softc *sc = device_private(dev);
struct genfb_private *scp = sc->sc_private;
KASSERT(scp->sc_brightness != NULL);
KASSERT(scp->sc_brightness->gpc_upd_parameter != NULL);
(void)scp->sc_brightness->gpc_upd_parameter(
scp->sc_brightness->gpc_cookie, GENFB_BRIGHTNESS_STEP);
}
static void
genfb_brightness_down(device_t dev)
{
struct genfb_softc *sc = device_private(dev);
struct genfb_private *scp = sc->sc_private;
KASSERT(scp->sc_brightness != NULL);
KASSERT(scp->sc_brightness->gpc_upd_parameter != NULL);
(void)scp->sc_brightness->gpc_upd_parameter(
scp->sc_brightness->gpc_cookie, -GENFB_BRIGHTNESS_STEP);
}
void
genfb_enable_polling(device_t dev)
{
struct genfb_softc *sc = device_private(dev);
struct genfb_private *scp = sc->sc_private;
if (scp == NULL)
return;
if (scp->sc_console_screen.scr_vd) {
SCREEN_ENABLE_DRAWING(&scp->sc_console_screen);
vcons_hard_switch(&scp->sc_console_screen);
vcons_enable_polling(&sc->vd);
if (scp->sc_ops.genfb_enable_polling)
(*scp->sc_ops.genfb_enable_polling)(sc);
}
}
void
genfb_disable_polling(device_t dev)
{
struct genfb_softc *sc = device_private(dev);
struct genfb_private *scp = sc->sc_private;
if (scp == NULL)
return;
if (scp->sc_console_screen.scr_vd) {
if (scp->sc_ops.genfb_disable_polling)
(*scp->sc_ops.genfb_disable_polling)(sc);
vcons_disable_polling(&sc->vd);
}
}
#if GENFB_GLYPHCACHE > 0
#define GLYPHCACHESIZE ((GENFB_GLYPHCACHE) * 1024 * 1024)
static inline int
attr2idx(long attr)
{
if ((attr & 0xf0f00ff8) != 0)
return -1;
return (((attr >> 16) & 0x0f) | ((attr >> 20) & 0xf0));
}
static int
genfb_setup_glyphcache(struct genfb_softc *sc, long defattr)
{
struct genfb_private *scp = sc->sc_private;
struct rasops_info *ri = &scp->sc_console_screen.scr_ri,
*cri = &scp->sc_cache_ri;
gc_bucket *b;
int i, usedcells = 0, idx, j;
scp->sc_cache = kmem_alloc(GLYPHCACHESIZE, KM_SLEEP);
/*
* now we build a mutant rasops_info for the cache - same pixel type
* and such as the real fb, but only one character per line for
* simplicity and locality
*/
memcpy(cri, ri, sizeof(struct rasops_info));
cri->ri_ops.putchar = scp->sc_putchar;
cri->ri_width = ri->ri_font->fontwidth;
cri->ri_stride = ri->ri_xscale;
cri->ri_bits = scp->sc_cache;
cri->ri_hwbits = NULL;
cri->ri_origbits = scp->sc_cache;
cri->ri_cols = 1;
cri->ri_rows = GLYPHCACHESIZE /
(cri->ri_stride * cri->ri_font->fontheight);
cri->ri_xorigin = 0;
cri->ri_yorigin = 0;
cri->ri_xscale = ri->ri_xscale;
cri->ri_yscale = ri->ri_font->fontheight * ri->ri_xscale;
printf("size %d %d %d\n", GLYPHCACHESIZE, ri->ri_width, ri->ri_stride);
printf("cells: %d\n", cri->ri_rows);
scp->sc_nbuckets = uimin(256, cri->ri_rows / 223);
scp->sc_buckets = kmem_alloc(sizeof(gc_bucket) * scp->sc_nbuckets,
KM_SLEEP);
printf("buckets: %d\n", scp->sc_nbuckets);
for (i = 0; i < scp->sc_nbuckets; i++) {
b = &scp->sc_buckets[i];
b->gb_firstcell = usedcells;
b->gb_numcells = uimin(223, cri->ri_rows - usedcells);
usedcells += 223;
b->gb_usedcells = 0;
b->gb_index = -1;
for (j = 0; j < 223; j++) b->gb_map[j] = -1;
}
/* initialize the attribute map... */
for (i = 0; i < 256; i++) {
scp->sc_attrmap[i] = -1;
}
/* first bucket goes to default attr */
idx = attr2idx(defattr);
printf("defattr %08lx idx %x\n", defattr, idx);
if (idx >= 0) {
scp->sc_attrmap[idx] = 0;
scp->sc_buckets[0].gb_index = idx;
}
return 0;
}
static void
genfb_putchar(void *cookie, int row, int col, u_int c, long attr)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct genfb_softc *sc = scr->scr_cookie;
struct genfb_private *scp = sc->sc_private;
uint8_t *src, *dst, *hwdst;
gc_bucket *b;
int i, idx, bi, cell;
attr &= ~WSATTR_USERMASK;
idx = attr2idx(attr);
if (c < 33 || c > 255 || idx < 0) goto nope;
/* look for a bucket with the right attribute */
bi = scp->sc_attrmap[idx];
if (bi == -1) {
/* nope, see if there's an empty one left */
bi = 1;
while ((bi < scp->sc_nbuckets) &&
(scp->sc_buckets[bi].gb_index != -1)) {
bi++;
}
if (bi < scp->sc_nbuckets) {
/* found one -> grab it */
scp->sc_attrmap[idx] = bi;
b = &scp->sc_buckets[bi];
b->gb_index = idx;
b->gb_usedcells = 0;
/* make sure this doesn't get evicted right away */
b->gb_lastread = time_uptime;
} else {
/*
* still nothing
* steal the least recently read bucket
*/
time_t moo = time_uptime;
int oldest = 1;
for (i = 1; i < scp->sc_nbuckets; i++) {
if (scp->sc_buckets[i].gb_lastread < moo) {
oldest = i;
moo = scp->sc_buckets[i].gb_lastread;
}
}
/* if we end up here all buckets must be in use */
b = &scp->sc_buckets[oldest];
scp->sc_attrmap[b->gb_index] = -1;
b->gb_index = idx;
b->gb_usedcells = 0;
scp->sc_attrmap[idx] = oldest;
/* now scrub it */
for (i = 0; i < 223; i++)
b->gb_map[i] = -1;
/* and set the time stamp */
b->gb_lastread = time_uptime;
}
} else {
/* found one */
b = &scp->sc_buckets[bi];
}
/* see if there's room in the bucket */
if (b->gb_usedcells >= b->gb_numcells) goto nope;
cell = b->gb_map[c - 33];
if (cell == -1) {
if (b->gb_usedcells >= b->gb_numcells)
goto nope;
cell = atomic_add_int_nv(&b->gb_usedcells, 1) - 1;
b->gb_map[c - 33] = cell;
cell += b->gb_firstcell;
scp->sc_putchar(&scp->sc_cache_ri, cell, 0, c, attr);
} else
cell += b->gb_firstcell;
src = scp->sc_cache + cell * scp->sc_cache_ri.ri_yscale;
dst = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale;
for (i = 0; i < ri->ri_font->fontheight; i++) {
memcpy(dst, src, ri->ri_xscale);
src += ri->ri_xscale;
dst += ri->ri_stride;
}
if (ri->ri_hwbits) {
src = scp->sc_cache + cell * scp->sc_cache_ri.ri_yscale;
hwdst = ri->ri_hwbits
+ row * ri->ri_yscale + col * ri->ri_xscale;
for (i = 0; i < ri->ri_font->fontheight; i++) {
memcpy(hwdst, src, ri->ri_xscale);
src += ri->ri_xscale;
hwdst += ri->ri_stride;
}
}
b->gb_lastread = time_uptime;
return;
nope:
scp->sc_putchar(cookie, row, col, c, attr);
}
#endif
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