a simple fb driver for Sun XVR-1000 boards
This commit is contained in:
macallan
parent
875f862227
commit
5f7d924101
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@ -0,0 +1,437 @@
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/* $NetBSD: gfb.c,v 1.1 2009/12/29 06:55:55 macallan Exp $ */
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/*
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* Copyright (c) 2009 Michael Lorenz
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* A console driver for Sun XVR-1000 graphics cards
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: gfb.c,v 1.1 2009/12/29 06:55:55 macallan Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/lwp.h>
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#include <sys/kauth.h>
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#include <sys/kmem.h>
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#include <uvm/uvm_extern.h>
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#include <dev/videomode/videomode.h>
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#include <machine/bus.h>
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#include <machine/autoconf.h>
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#include <machine/openfirm.h>
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#include <dev/wscons/wsdisplayvar.h>
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#include <dev/wscons/wsconsio.h>
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#include <dev/wsfont/wsfont.h>
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#include <dev/rasops/rasops.h>
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#include <dev/wscons/wsdisplay_vconsvar.h>
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struct gfb_softc {
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device_t sc_dev;
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bus_space_tag_t sc_memt;
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bus_space_handle_t sc_fbh;
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bus_addr_t sc_fb_paddr;
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int sc_width, sc_height, sc_depth, sc_stride, sc_fblen;
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int sc_locked;
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void *sc_fbaddr, *sc_shadow;
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struct vcons_screen sc_console_screen;
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struct wsscreen_descr sc_defaultscreen_descr;
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const struct wsscreen_descr *sc_screens[1];
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struct wsscreen_list sc_screenlist;
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struct vcons_data vd;
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int sc_mode;
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int sc_node;
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u_char sc_cmap_red[256];
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u_char sc_cmap_green[256];
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u_char sc_cmap_blue[256];
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};
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static int gfb_match(device_t, cfdata_t, void *);
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static void gfb_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(gfb, sizeof(struct gfb_softc),
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gfb_match, gfb_attach, NULL, NULL);
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extern const u_char rasops_cmap[768];
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static int gfb_ioctl(void *, void *, u_long, void *, int,
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struct lwp *);
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static paddr_t gfb_mmap(void *, void *, off_t, int);
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static void gfb_init_screen(void *, struct vcons_screen *, int, long *);
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static int gfb_putcmap(struct gfb_softc *, struct wsdisplay_cmap *);
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static int gfb_getcmap(struct gfb_softc *, struct wsdisplay_cmap *);
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static void gfb_restore_palette(struct gfb_softc *);
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static int gfb_putpalreg(struct gfb_softc *, uint8_t, uint8_t,
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uint8_t, uint8_t);
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struct wsdisplay_accessops gfb_accessops = {
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gfb_ioctl,
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gfb_mmap,
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NULL, /* alloc_screen */
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NULL, /* free_screen */
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NULL, /* show_screen */
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NULL, /* load_font */
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NULL, /* pollc */
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NULL /* scroll */
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};
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extern int prom_stdout_node;
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static int
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gfb_match(device_t parent, cfdata_t match, void *aux)
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{
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struct mainbus_attach_args *ma = aux;
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if (strcmp(ma->ma_name, "SUNW,gfb") == 0 )
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return 100;
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return 0;
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}
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static void
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gfb_attach(device_t parent, device_t self, void *aux)
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{
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struct gfb_softc *sc = device_private(self);
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struct mainbus_attach_args *ma = aux;
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struct rasops_info *ri;
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struct wsemuldisplaydev_attach_args aa;
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unsigned long defattr;
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bool is_console;
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int i, j;
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sc->sc_memt = ma->ma_bustag;
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sc->sc_dev = self;
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sc->sc_node = ma->ma_node;
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if (ma->ma_nreg < 7) {
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aprint_error("%s: can't find the fb range\n",
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device_xname(self));
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return;
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}
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is_console = (prom_stdout_node == ma->ma_node);
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aprint_normal(": Sun XVR-1000%s\n", is_console ? " (console)" : "");
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sc->sc_depth = 32;
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sc->sc_stride = 0x4000;
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sc->sc_height = prom_getpropint(sc->sc_node, "height", 0);
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sc->sc_width = prom_getpropint(sc->sc_node, "width", 0);
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sc->sc_fblen = sc->sc_stride * sc->sc_height;
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if (sc->sc_fblen == 0) {
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aprint_error("%s: not set up by firmware, can't continue.\n",
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device_xname(self));
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return;
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}
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sc->sc_shadow = kmem_alloc(sc->sc_fblen, KM_SLEEP);
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sc->sc_locked = 0;
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sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
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if (bus_space_map(sc->sc_memt, ma->ma_reg[6].ur_paddr,
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sc->sc_fblen, BUS_SPACE_MAP_LINEAR, &sc->sc_fbh)) {
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printf(": failed to map the framebuffer\n");
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return;
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}
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sc->sc_fbaddr = bus_space_vaddr(sc->sc_memt, sc->sc_fbh);
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sc->sc_fb_paddr = ma->ma_reg[6].ur_paddr;
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sc->sc_defaultscreen_descr = (struct wsscreen_descr){
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"default",
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0, 0,
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NULL,
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8, 16,
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WSSCREEN_WSCOLORS | WSSCREEN_HILIT,
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NULL
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};
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sc->sc_screens[0] = &sc->sc_defaultscreen_descr;
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sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens};
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sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
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sc->sc_locked = 0;
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vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr,
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&gfb_accessops);
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sc->vd.init_screen = gfb_init_screen;
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ri = &sc->sc_console_screen.scr_ri;
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j = 0;
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for (i = 0; i < (1 << sc->sc_depth); i++) {
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sc->sc_cmap_red[i] = rasops_cmap[j];
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sc->sc_cmap_green[i] = rasops_cmap[j + 1];
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sc->sc_cmap_blue[i] = rasops_cmap[j + 2];
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gfb_putpalreg(sc, i, rasops_cmap[j], rasops_cmap[j + 1],
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rasops_cmap[j + 2]);
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j += 3;
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}
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if (is_console) {
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vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1,
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&defattr);
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sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;
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#if notyet
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gfb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height,
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ri->ri_devcmap[(defattr >> 16) & 0xff]);
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#endif
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sc->sc_defaultscreen_descr.textops = &ri->ri_ops;
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sc->sc_defaultscreen_descr.capabilities = ri->ri_caps;
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sc->sc_defaultscreen_descr.nrows = ri->ri_rows;
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sc->sc_defaultscreen_descr.ncols = ri->ri_cols;
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wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0,
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defattr);
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vcons_replay_msgbuf(&sc->sc_console_screen);
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} else {
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/*
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* since we're not the console we can postpone the rest
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* until someone actually allocates a screen for us
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*/
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(*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr);
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}
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aa.console = is_console;
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aa.scrdata = &sc->sc_screenlist;
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aa.accessops = &gfb_accessops;
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aa.accesscookie = &sc->vd;
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config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
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}
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static int
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gfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
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struct lwp *l)
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{
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struct vcons_data *vd = v;
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struct gfb_softc *sc = vd->cookie;
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struct wsdisplay_fbinfo *wdf;
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struct vcons_screen *ms = vd->active;
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switch (cmd) {
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case WSDISPLAYIO_GTYPE:
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*(u_int *)data = WSDISPLAY_TYPE_PCIMISC;
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return 0;
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case WSDISPLAYIO_GINFO:
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if (ms == NULL)
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return ENODEV;
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wdf = (void *)data;
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wdf->height = ms->scr_ri.ri_height;
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wdf->width = ms->scr_ri.ri_width;
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wdf->depth = ms->scr_ri.ri_depth;
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wdf->cmsize = 256;
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return 0;
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case WSDISPLAYIO_GETCMAP:
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return gfb_getcmap(sc,
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(struct wsdisplay_cmap *)data);
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case WSDISPLAYIO_PUTCMAP:
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return gfb_putcmap(sc,
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(struct wsdisplay_cmap *)data);
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case WSDISPLAYIO_LINEBYTES:
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*(u_int *)data = sc->sc_stride;
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return 0;
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case WSDISPLAYIO_SMODE:
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{
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int new_mode = *(int*)data;
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/* notify the bus backend */
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if (new_mode != sc->sc_mode) {
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sc->sc_mode = new_mode;
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if(new_mode == WSDISPLAYIO_MODE_EMUL) {
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gfb_restore_palette(sc);
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vcons_redraw_screen(ms);
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}
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}
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}
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return 0;
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}
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return EPASSTHROUGH;
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}
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static paddr_t
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gfb_mmap(void *v, void *vs, off_t offset, int prot)
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{
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struct vcons_data *vd = v;
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struct gfb_softc *sc = vd->cookie;
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paddr_t pa;
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/* 'regular' framebuffer mmap()ing */
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if (offset < sc->sc_fblen) {
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pa = bus_space_mmap(sc->sc_memt, sc->sc_fb_paddr + offset, 0,
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prot, BUS_SPACE_MAP_LINEAR);
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return pa;
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}
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/*
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* restrict all other mappings to processes with superuser privileges
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* or the kernel itself
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*/
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if (kauth_authorize_generic(kauth_cred_get(), KAUTH_GENERIC_ISSUSER,
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NULL) != 0) {
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aprint_normal("%s: mmap() rejected.\n",
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device_xname(sc->sc_dev));
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return -1;
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}
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/* let userland map other ranges */
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return -1;
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}
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static void
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gfb_init_screen(void *cookie, struct vcons_screen *scr,
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int existing, long *defattr)
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{
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struct gfb_softc *sc = cookie;
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struct rasops_info *ri = &scr->scr_ri;
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ri->ri_depth = sc->sc_depth;
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ri->ri_width = sc->sc_width;
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ri->ri_height = sc->sc_height;
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ri->ri_stride = sc->sc_stride;
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ri->ri_flg = RI_CENTER | RI_FULLCLEAR;
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ri->ri_bits = sc->sc_shadow;
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ri->ri_hwbits = (char *)sc->sc_fbaddr;
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if (existing) {
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ri->ri_flg |= RI_CLEAR;
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}
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rasops_init(ri, sc->sc_height / 8, sc->sc_width / 8);
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ri->ri_caps = WSSCREEN_WSCOLORS;
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rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
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sc->sc_width / ri->ri_font->fontwidth);
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ri->ri_hw = scr;
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#if 0
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ri->ri_ops.copyrows = gfb_copyrows;
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ri->ri_ops.copycols = gfb_copycols;
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ri->ri_ops.cursor = gfb_cursor;
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ri->ri_ops.eraserows = gfb_eraserows;
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ri->ri_ops.erasecols = gfb_erasecols;
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ri->ri_ops.putchar = gfb_putchar;
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#endif
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}
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static int
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gfb_putcmap(struct gfb_softc *sc, struct wsdisplay_cmap *cm)
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{
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u_char *r, *g, *b;
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u_int index = cm->index;
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u_int count = cm->count;
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int i, error;
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u_char rbuf[256], gbuf[256], bbuf[256];
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#ifdef GFB_DEBUG
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aprint_debug("putcmap: %d %d\n",index, count);
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#endif
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if (cm->index >= 256 || cm->count > 256 ||
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(cm->index + cm->count) > 256)
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return EINVAL;
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error = copyin(cm->red, &rbuf[index], count);
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if (error)
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return error;
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error = copyin(cm->green, &gbuf[index], count);
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if (error)
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return error;
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error = copyin(cm->blue, &bbuf[index], count);
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if (error)
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return error;
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memcpy(&sc->sc_cmap_red[index], &rbuf[index], count);
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memcpy(&sc->sc_cmap_green[index], &gbuf[index], count);
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memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count);
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r = &sc->sc_cmap_red[index];
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g = &sc->sc_cmap_green[index];
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b = &sc->sc_cmap_blue[index];
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for (i = 0; i < count; i++) {
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gfb_putpalreg(sc, index, *r, *g, *b);
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index++;
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r++, g++, b++;
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}
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return 0;
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}
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static int
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gfb_getcmap(struct gfb_softc *sc, struct wsdisplay_cmap *cm)
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{
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u_int index = cm->index;
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u_int count = cm->count;
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int error;
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if (index >= 255 || count > 256 || index + count > 256)
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return EINVAL;
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error = copyout(&sc->sc_cmap_red[index], cm->red, count);
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if (error)
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return error;
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error = copyout(&sc->sc_cmap_green[index], cm->green, count);
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if (error)
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return error;
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error = copyout(&sc->sc_cmap_blue[index], cm->blue, count);
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if (error)
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return error;
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return 0;
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}
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static void
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gfb_restore_palette(struct gfb_softc *sc)
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{
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int i;
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for (i = 0; i < (1 << sc->sc_depth); i++) {
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gfb_putpalreg(sc, i, sc->sc_cmap_red[i],
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sc->sc_cmap_green[i], sc->sc_cmap_blue[i]);
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}
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}
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static int
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gfb_putpalreg(struct gfb_softc *sc, uint8_t idx, uint8_t r, uint8_t g,
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uint8_t b)
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{
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return 0;
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}
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