Module Name: src
Committed By: macallan
Date: Tue Dec 29 06:55:56 UTC 2009
Added Files:
src/sys/arch/sparc64/dev: gfb.c
Log Message:
a simple fb driver for Sun XVR-1000 boards
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 src/sys/arch/sparc64/dev/gfb.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/sys/arch/sparc64/dev/gfb.c
diff -u /dev/null src/sys/arch/sparc64/dev/gfb.c:1.1
--- /dev/null Tue Dec 29 06:55:56 2009
+++ src/sys/arch/sparc64/dev/gfb.c Tue Dec 29 06:55:55 2009
@@ -0,0 +1,437 @@
+/* $NetBSD: gfb.c,v 1.1 2009/12/29 06:55:55 macallan Exp $ */
+
+/*
+ * Copyright (c) 2009 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 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.
+ */
+
+/*
+ * A console driver for Sun XVR-1000 graphics cards
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: gfb.c,v 1.1 2009/12/29 06:55:55 macallan Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/lwp.h>
+#include <sys/kauth.h>
+#include <sys/kmem.h>
+
+#include <uvm/uvm_extern.h>
+
+#include <dev/videomode/videomode.h>
+
+#include <machine/bus.h>
+#include <machine/autoconf.h>
+#include <machine/openfirm.h>
+
+#include <dev/wscons/wsdisplayvar.h>
+#include <dev/wscons/wsconsio.h>
+#include <dev/wsfont/wsfont.h>
+#include <dev/rasops/rasops.h>
+#include <dev/wscons/wsdisplay_vconsvar.h>
+
+
+struct gfb_softc {
+ device_t sc_dev;
+
+ bus_space_tag_t sc_memt;
+
+ bus_space_handle_t sc_fbh;
+ bus_addr_t sc_fb_paddr;
+
+ int sc_width, sc_height, sc_depth, sc_stride, sc_fblen;
+ int sc_locked;
+ void *sc_fbaddr, *sc_shadow;
+ 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 vcons_data vd;
+ int sc_mode;
+ int sc_node;
+ u_char sc_cmap_red[256];
+ u_char sc_cmap_green[256];
+ u_char sc_cmap_blue[256];
+};
+
+static int gfb_match(device_t, cfdata_t, void *);
+static void gfb_attach(device_t, device_t, void *);
+
+CFATTACH_DECL_NEW(gfb, sizeof(struct gfb_softc),
+ gfb_match, gfb_attach, NULL, NULL);
+
+extern const u_char rasops_cmap[768];
+
+static int gfb_ioctl(void *, void *, u_long, void *, int,
+ struct lwp *);
+static paddr_t gfb_mmap(void *, void *, off_t, int);
+static void gfb_init_screen(void *, struct vcons_screen *, int, long *);
+
+static int gfb_putcmap(struct gfb_softc *, struct wsdisplay_cmap *);
+static int gfb_getcmap(struct gfb_softc *, struct wsdisplay_cmap *);
+static void gfb_restore_palette(struct gfb_softc *);
+static int gfb_putpalreg(struct gfb_softc *, uint8_t, uint8_t,
+ uint8_t, uint8_t);
+
+struct wsdisplay_accessops gfb_accessops = {
+ gfb_ioctl,
+ gfb_mmap,
+ NULL, /* alloc_screen */
+ NULL, /* free_screen */
+ NULL, /* show_screen */
+ NULL, /* load_font */
+ NULL, /* pollc */
+ NULL /* scroll */
+};
+
+extern int prom_stdout_node;
+
+static int
+gfb_match(device_t parent, cfdata_t match, void *aux)
+{
+ struct mainbus_attach_args *ma = aux;
+
+ if (strcmp(ma->ma_name, "SUNW,gfb") == 0 )
+ return 100;
+ return 0;
+}
+
+static void
+gfb_attach(device_t parent, device_t self, void *aux)
+{
+ struct gfb_softc *sc = device_private(self);
+ struct mainbus_attach_args *ma = aux;
+ struct rasops_info *ri;
+ struct wsemuldisplaydev_attach_args aa;
+ unsigned long defattr;
+ bool is_console;
+ int i, j;
+
+ sc->sc_memt = ma->ma_bustag;
+ sc->sc_dev = self;
+ sc->sc_node = ma->ma_node;
+
+ if (ma->ma_nreg < 7) {
+ aprint_error("%s: can't find the fb range\n",
+ device_xname(self));
+ return;
+ }
+
+ is_console = (prom_stdout_node == ma->ma_node);
+
+ aprint_normal(": Sun XVR-1000%s\n", is_console ? " (console)" : "");
+
+ sc->sc_depth = 32;
+ sc->sc_stride = 0x4000;
+ sc->sc_height = prom_getpropint(sc->sc_node, "height", 0);
+ sc->sc_width = prom_getpropint(sc->sc_node, "width", 0);
+ sc->sc_fblen = sc->sc_stride * sc->sc_height;
+
+ if (sc->sc_fblen == 0) {
+ aprint_error("%s: not set up by firmware, can't continue.\n",
+ device_xname(self));
+ return;
+ }
+
+ sc->sc_shadow = kmem_alloc(sc->sc_fblen, KM_SLEEP);
+ sc->sc_locked = 0;
+ sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
+
+ if (bus_space_map(sc->sc_memt, ma->ma_reg[6].ur_paddr,
+ sc->sc_fblen, BUS_SPACE_MAP_LINEAR, &sc->sc_fbh)) {
+ printf(": failed to map the framebuffer\n");
+ return;
+ }
+ sc->sc_fbaddr = bus_space_vaddr(sc->sc_memt, sc->sc_fbh);
+ sc->sc_fb_paddr = ma->ma_reg[6].ur_paddr;
+
+ sc->sc_defaultscreen_descr = (struct wsscreen_descr){
+ "default",
+ 0, 0,
+ NULL,
+ 8, 16,
+ WSSCREEN_WSCOLORS | WSSCREEN_HILIT,
+ NULL
+ };
+ sc->sc_screens[0] = &sc->sc_defaultscreen_descr;
+ sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens};
+ sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
+ sc->sc_locked = 0;
+
+ vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr,
+ &gfb_accessops);
+ sc->vd.init_screen = gfb_init_screen;
+
+ ri = &sc->sc_console_screen.scr_ri;
+
+ j = 0;
+ for (i = 0; i < (1 << sc->sc_depth); i++) {
+
+ sc->sc_cmap_red[i] = rasops_cmap[j];
+ sc->sc_cmap_green[i] = rasops_cmap[j + 1];
+ sc->sc_cmap_blue[i] = rasops_cmap[j + 2];
+ gfb_putpalreg(sc, i, rasops_cmap[j], rasops_cmap[j + 1],
+ rasops_cmap[j + 2]);
+ j += 3;
+ }
+
+ if (is_console) {
+ vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1,
+ &defattr);
+ sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;
+
+#if notyet
+ gfb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height,
+ ri->ri_devcmap[(defattr >> 16) & 0xff]);
+#endif
+ sc->sc_defaultscreen_descr.textops = &ri->ri_ops;
+ sc->sc_defaultscreen_descr.capabilities = ri->ri_caps;
+ sc->sc_defaultscreen_descr.nrows = ri->ri_rows;
+ sc->sc_defaultscreen_descr.ncols = ri->ri_cols;
+ wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0,
+ defattr);
+ vcons_replay_msgbuf(&sc->sc_console_screen);
+ } else {
+ /*
+ * since we're not the console we can postpone the rest
+ * until someone actually allocates a screen for us
+ */
+ (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr);
+ }
+
+ aa.console = is_console;
+ aa.scrdata = &sc->sc_screenlist;
+ aa.accessops = &gfb_accessops;
+ aa.accesscookie = &sc->vd;
+
+ config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
+}
+
+static int
+gfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
+ struct lwp *l)
+{
+ struct vcons_data *vd = v;
+ struct gfb_softc *sc = vd->cookie;
+ struct wsdisplay_fbinfo *wdf;
+ struct vcons_screen *ms = vd->active;
+
+ switch (cmd) {
+
+ case WSDISPLAYIO_GTYPE:
+ *(u_int *)data = WSDISPLAY_TYPE_PCIMISC;
+ return 0;
+
+ 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 gfb_getcmap(sc,
+ (struct wsdisplay_cmap *)data);
+
+ case WSDISPLAYIO_PUTCMAP:
+ return gfb_putcmap(sc,
+ (struct wsdisplay_cmap *)data);
+
+ case WSDISPLAYIO_LINEBYTES:
+ *(u_int *)data = sc->sc_stride;
+ return 0;
+
+ case WSDISPLAYIO_SMODE:
+ {
+ int new_mode = *(int*)data;
+
+ /* notify the bus backend */
+ if (new_mode != sc->sc_mode) {
+ sc->sc_mode = new_mode;
+ if(new_mode == WSDISPLAYIO_MODE_EMUL) {
+ gfb_restore_palette(sc);
+ vcons_redraw_screen(ms);
+ }
+ }
+ }
+ return 0;
+ }
+ return EPASSTHROUGH;
+}
+
+static paddr_t
+gfb_mmap(void *v, void *vs, off_t offset, int prot)
+{
+ struct vcons_data *vd = v;
+ struct gfb_softc *sc = vd->cookie;
+ paddr_t pa;
+
+ /* 'regular' framebuffer mmap()ing */
+ if (offset < sc->sc_fblen) {
+ pa = bus_space_mmap(sc->sc_memt, sc->sc_fb_paddr + offset, 0,
+ prot, BUS_SPACE_MAP_LINEAR);
+ return pa;
+ }
+
+ /*
+ * restrict all other mappings to processes with superuser privileges
+ * or the kernel itself
+ */
+ if (kauth_authorize_generic(kauth_cred_get(), KAUTH_GENERIC_ISSUSER,
+ NULL) != 0) {
+ aprint_normal("%s: mmap() rejected.\n",
+ device_xname(sc->sc_dev));
+ return -1;
+ }
+
+ /* let userland map other ranges */
+
+ return -1;
+}
+
+static void
+gfb_init_screen(void *cookie, struct vcons_screen *scr,
+ int existing, long *defattr)
+{
+ struct gfb_softc *sc = cookie;
+ struct rasops_info *ri = &scr->scr_ri;
+
+ 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 | RI_FULLCLEAR;
+
+ ri->ri_bits = sc->sc_shadow;
+ ri->ri_hwbits = (char *)sc->sc_fbaddr;
+
+ if (existing) {
+ ri->ri_flg |= RI_CLEAR;
+ }
+
+ rasops_init(ri, sc->sc_height / 8, sc->sc_width / 8);
+ ri->ri_caps = WSSCREEN_WSCOLORS;
+
+ rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
+ sc->sc_width / ri->ri_font->fontwidth);
+
+ ri->ri_hw = scr;
+#if 0
+ ri->ri_ops.copyrows = gfb_copyrows;
+ ri->ri_ops.copycols = gfb_copycols;
+ ri->ri_ops.cursor = gfb_cursor;
+ ri->ri_ops.eraserows = gfb_eraserows;
+ ri->ri_ops.erasecols = gfb_erasecols;
+ ri->ri_ops.putchar = gfb_putchar;
+#endif
+}
+
+static int
+gfb_putcmap(struct gfb_softc *sc, struct wsdisplay_cmap *cm)
+{
+ 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 GFB_DEBUG
+ aprint_debug("putcmap: %d %d\n",index, count);
+#endif
+ if (cm->index >= 256 || cm->count > 256 ||
+ (cm->index + cm->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(&sc->sc_cmap_red[index], &rbuf[index], count);
+ memcpy(&sc->sc_cmap_green[index], &gbuf[index], count);
+ memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count);
+
+ r = &sc->sc_cmap_red[index];
+ g = &sc->sc_cmap_green[index];
+ b = &sc->sc_cmap_blue[index];
+
+ for (i = 0; i < count; i++) {
+ gfb_putpalreg(sc, index, *r, *g, *b);
+ index++;
+ r++, g++, b++;
+ }
+ return 0;
+}
+
+static int
+gfb_getcmap(struct gfb_softc *sc, struct wsdisplay_cmap *cm)
+{
+ u_int index = cm->index;
+ u_int count = cm->count;
+ int error;
+
+ if (index >= 255 || count > 256 || index + count > 256)
+ return EINVAL;
+
+ error = copyout(&sc->sc_cmap_red[index], cm->red, count);
+ if (error)
+ return error;
+ error = copyout(&sc->sc_cmap_green[index], cm->green, count);
+ if (error)
+ return error;
+ error = copyout(&sc->sc_cmap_blue[index], cm->blue, count);
+ if (error)
+ return error;
+
+ return 0;
+}
+
+static void
+gfb_restore_palette(struct gfb_softc *sc)
+{
+ int i;
+
+ for (i = 0; i < (1 << sc->sc_depth); i++) {
+ gfb_putpalreg(sc, i, sc->sc_cmap_red[i],
+ sc->sc_cmap_green[i], sc->sc_cmap_blue[i]);
+ }
+}
+
+static int
+gfb_putpalreg(struct gfb_softc *sc, uint8_t idx, uint8_t r, uint8_t g,
+ uint8_t b)
+{
+ return 0;
+}
