2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/consio.h>
38 #include <sys/kernel.h>
39 #include <sys/malloc.h>
40 #include <sys/module.h>
45 #include <dev/fb/fbreg.h>
46 #include <dev/ofw/ofw_bus.h>
47 #include <dev/ofw/ofw_bus_subr.h>
48 #include <dev/syscons/syscons.h>
50 #include <arm/broadcom/bcm2835/bcm2835_mbox_prop.h>
61 static struct argb bcmfb_palette[16] = {
62 {0x00, 0x00, 0x00, 0x00},
63 {0x00, 0x00, 0x00, 0xaa},
64 {0x00, 0x00, 0xaa, 0x00},
65 {0x00, 0x00, 0xaa, 0xaa},
66 {0x00, 0xaa, 0x00, 0x00},
67 {0x00, 0xaa, 0x00, 0xaa},
68 {0x00, 0xaa, 0x55, 0x00},
69 {0x00, 0xaa, 0xaa, 0xaa},
70 {0x00, 0x55, 0x55, 0x55},
71 {0x00, 0x55, 0x55, 0xff},
72 {0x00, 0x55, 0xff, 0x55},
73 {0x00, 0x55, 0xff, 0xff},
74 {0x00, 0xff, 0x55, 0x55},
75 {0x00, 0xff, 0x55, 0xff},
76 {0x00, 0xff, 0xff, 0x55},
77 {0x00, 0xff, 0xff, 0xff}
80 /* mouse pointer from dev/syscons/scgfbrndr.c */
81 static u_char mouse_pointer[16] = {
82 0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
83 0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
86 #define BCMFB_FONT_HEIGHT 16
87 #define BCMFB_FONT_WIDTH 8
93 /* Videoadpater part */
105 unsigned int xmargin;
106 unsigned int ymargin;
113 static struct bcmsc_softc bcmsc;
115 static struct ofw_compat_data compat_data[] = {
116 {"broadcom,bcm2835-fb", 1},
117 {"brcm,bcm2708-fb", 1},
121 static int bcm_fb_probe(device_t);
122 static int bcm_fb_attach(device_t);
123 static void bcmfb_update_margins(video_adapter_t *adp);
124 static int bcmfb_configure(int);
127 bcm_fb_probe(device_t dev)
131 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
134 device_set_desc(dev, "BCM2835 framebuffer device");
135 error = sc_probe_unit(device_get_unit(dev),
136 device_get_flags(dev) | SC_AUTODETECT_KBD);
140 return (BUS_PROBE_DEFAULT);
144 bcm_fb_attach(device_t dev)
146 struct bcm2835_fb_config fb;
147 struct bcmsc_softc *sc;
149 sc = (struct bcmsc_softc *)vid_get_adapter(vid_find_adapter(
152 device_set_softc(dev, sc);
154 sc = device_get_softc(dev);
156 memset(&fb, 0, sizeof(fb));
157 if (bcm2835_mbox_fb_get_w_h(&fb) != 0)
162 fb.xoffset = fb.yoffset = 0;
163 if (bcm2835_mbox_fb_init(&fb) != 0)
166 sc->fb_addr = (intptr_t)pmap_mapdev(fb.base, fb.size);
167 sc->fb_paddr = fb.base;
168 sc->fb_size = fb.size;
170 sc->stride = fb.pitch;
172 sc->height = fb.yres;
173 bcmfb_update_margins(&sc->va);
175 if (sc_attach_unit(device_get_unit(dev),
176 device_get_flags(dev) | SC_AUTODETECT_KBD) != 0) {
177 device_printf(dev, "failed to attach syscons\n");
181 device_printf(dev, "%dx%d(%dx%d@%d,%d) %dbpp\n", fb.xres, fb.yres,
182 fb.vxres, fb.vyres, fb.xoffset, fb.yoffset, fb.bpp);
184 "fbswap: %d, pitch %d, base 0x%08x, screen_size %d\n",
185 sc->fbswap, fb.pitch, fb.base, fb.size);
190 static device_method_t bcm_fb_methods[] = {
191 /* Device interface */
192 DEVMETHOD(device_probe, bcm_fb_probe),
193 DEVMETHOD(device_attach, bcm_fb_attach),
198 static devclass_t bcm_fb_devclass;
200 static driver_t bcm_fb_driver = {
203 sizeof(struct bcmsc_softc),
206 DRIVER_MODULE(bcm2835fb, ofwbus, bcm_fb_driver, bcm_fb_devclass, 0, 0);
207 DRIVER_MODULE(bcm2835fb, simplebus, bcm_fb_driver, bcm_fb_devclass, 0, 0);
210 * Video driver routines and glue.
212 static vi_probe_t bcmfb_probe;
213 static vi_init_t bcmfb_init;
214 static vi_get_info_t bcmfb_get_info;
215 static vi_query_mode_t bcmfb_query_mode;
216 static vi_set_mode_t bcmfb_set_mode;
217 static vi_save_font_t bcmfb_save_font;
218 static vi_load_font_t bcmfb_load_font;
219 static vi_show_font_t bcmfb_show_font;
220 static vi_save_palette_t bcmfb_save_palette;
221 static vi_load_palette_t bcmfb_load_palette;
222 static vi_set_border_t bcmfb_set_border;
223 static vi_save_state_t bcmfb_save_state;
224 static vi_load_state_t bcmfb_load_state;
225 static vi_set_win_org_t bcmfb_set_win_org;
226 static vi_read_hw_cursor_t bcmfb_read_hw_cursor;
227 static vi_set_hw_cursor_t bcmfb_set_hw_cursor;
228 static vi_set_hw_cursor_shape_t bcmfb_set_hw_cursor_shape;
229 static vi_blank_display_t bcmfb_blank_display;
230 static vi_mmap_t bcmfb_mmap;
231 static vi_ioctl_t bcmfb_ioctl;
232 static vi_clear_t bcmfb_clear;
233 static vi_fill_rect_t bcmfb_fill_rect;
234 static vi_bitblt_t bcmfb_bitblt;
235 static vi_diag_t bcmfb_diag;
236 static vi_save_cursor_palette_t bcmfb_save_cursor_palette;
237 static vi_load_cursor_palette_t bcmfb_load_cursor_palette;
238 static vi_copy_t bcmfb_copy;
239 static vi_putp_t bcmfb_putp;
240 static vi_putc_t bcmfb_putc;
241 static vi_puts_t bcmfb_puts;
242 static vi_putm_t bcmfb_putm;
244 static video_switch_t bcmfbvidsw = {
245 .probe = bcmfb_probe,
247 .get_info = bcmfb_get_info,
248 .query_mode = bcmfb_query_mode,
249 .set_mode = bcmfb_set_mode,
250 .save_font = bcmfb_save_font,
251 .load_font = bcmfb_load_font,
252 .show_font = bcmfb_show_font,
253 .save_palette = bcmfb_save_palette,
254 .load_palette = bcmfb_load_palette,
255 .set_border = bcmfb_set_border,
256 .save_state = bcmfb_save_state,
257 .load_state = bcmfb_load_state,
258 .set_win_org = bcmfb_set_win_org,
259 .read_hw_cursor = bcmfb_read_hw_cursor,
260 .set_hw_cursor = bcmfb_set_hw_cursor,
261 .set_hw_cursor_shape = bcmfb_set_hw_cursor_shape,
262 .blank_display = bcmfb_blank_display,
264 .ioctl = bcmfb_ioctl,
265 .clear = bcmfb_clear,
266 .fill_rect = bcmfb_fill_rect,
267 .bitblt = bcmfb_bitblt,
269 .save_cursor_palette = bcmfb_save_cursor_palette,
270 .load_cursor_palette = bcmfb_load_cursor_palette,
278 VIDEO_DRIVER(bcmfb, bcmfbvidsw, bcmfb_configure);
280 static vr_init_t bcmrend_init;
281 static vr_clear_t bcmrend_clear;
282 static vr_draw_border_t bcmrend_draw_border;
283 static vr_draw_t bcmrend_draw;
284 static vr_set_cursor_t bcmrend_set_cursor;
285 static vr_draw_cursor_t bcmrend_draw_cursor;
286 static vr_blink_cursor_t bcmrend_blink_cursor;
287 static vr_set_mouse_t bcmrend_set_mouse;
288 static vr_draw_mouse_t bcmrend_draw_mouse;
291 * We use our own renderer; this is because we must emulate a hardware
294 static sc_rndr_sw_t bcmrend = {
301 bcmrend_blink_cursor,
306 RENDERER(bcmfb, 0, bcmrend, gfb_set);
307 RENDERER_MODULE(bcmfb, gfb_set);
310 bcmrend_init(scr_stat* scp)
315 bcmrend_clear(scr_stat* scp, int c, int attr)
320 bcmrend_draw_border(scr_stat* scp, int color)
325 bcmrend_draw(scr_stat* scp, int from, int count, int flip)
327 video_adapter_t* adp = scp->sc->adp;
331 /* Normal printing */
332 vidd_puts(adp, from, (uint16_t*)sc_vtb_pointer(&scp->vtb, from), count);
334 /* This is for selections and such: invert the color attribute */
335 for (i = count; i-- > 0; ++from) {
336 c = sc_vtb_getc(&scp->vtb, from);
337 a = sc_vtb_geta(&scp->vtb, from) >> 8;
338 vidd_putc(adp, from, c, (a >> 4) | ((a & 0xf) << 4));
344 bcmrend_set_cursor(scr_stat* scp, int base, int height, int blink)
349 bcmrend_draw_cursor(scr_stat* scp, int off, int blink, int on, int flip)
351 int bytes, col, i, j, row;
352 struct bcmsc_softc *sc;
354 video_adapter_t *adp;
357 sc = (struct bcmsc_softc *)adp;
359 if (scp->curs_attr.height <= 0)
362 if (sc->fb_addr == 0)
365 if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
368 /* calculate the coordinates in the video buffer */
369 row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
370 col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
372 addr = (uint8_t *)sc->fb_addr
373 + (row + sc->ymargin)*(sc->stride)
374 + (sc->depth/8) * (col + sc->xmargin);
376 bytes = sc->depth / 8;
377 /* our cursor consists of simply inverting the char under it */
378 for (i = 0; i < adp->va_info.vi_cheight; i++) {
379 for (j = 0; j < adp->va_info.vi_cwidth; j++) {
383 addr[bytes*j + 2] ^= 0xff;
386 addr[bytes*j + 1] ^= 0xff;
387 addr[bytes*j] ^= 0xff;
399 bcmrend_blink_cursor(scr_stat* scp, int at, int flip)
404 bcmrend_set_mouse(scr_stat* scp)
409 bcmrend_draw_mouse(scr_stat* scp, int x, int y, int on)
411 vidd_putm(scp->sc->adp, x, y, mouse_pointer, 0xffffffff, 16, 8);
414 static uint16_t bcmfb_static_window[ROW*COL];
415 extern u_char dflt_font_16[];
418 * Update videoadapter settings after changing resolution
421 bcmfb_update_margins(video_adapter_t *adp)
423 struct bcmsc_softc *sc;
426 sc = (struct bcmsc_softc *)adp;
429 sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
430 sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight)) / 2;
434 bcmfb_configure(int flags)
436 char bootargs[2048], *n, *p, *v;
438 phandle_t chosen, display, root;
439 struct bcmsc_softc *sc;
449 * It seems there is no way to let syscons framework know
450 * that framebuffer resolution has changed. So just try
451 * to fetch data from FDT bootargs, FDT display data and
452 * finally go with defaults if everything else has failed.
454 chosen = OF_finddevice("/chosen");
456 OF_getprop(chosen, "bootargs", &bootargs, sizeof(bootargs)) > 0) {
458 while ((v = strsep(&p, " ")) != NULL) {
462 if (strcmp(n, "bcm2708_fb.fbwidth") == 0 && v != NULL)
463 sc->width = (unsigned int)strtol(v, NULL, 0);
464 else if (strcmp(n, "bcm2708_fb.fbheight") == 0 &&
466 sc->height = (unsigned int)strtol(v, NULL, 0);
467 else if (strcmp(n, "bcm2708_fb.fbswap") == 0 &&
474 root = OF_finddevice("/");
476 (display = fdt_find_compatible(root, "broadcom,bcm2835-fb", 1))) {
477 if (sc->width == 0) {
478 if ((OF_getencprop(display, "broadcom,width",
479 &cell, sizeof(cell))) > 0)
483 if (sc->height == 0) {
484 if ((OF_getencprop(display, "broadcom,height",
485 &cell, sizeof(cell))) > 0)
491 sc->width = FB_WIDTH;
493 sc->height = FB_HEIGHT;
495 bcmfb_init(0, &sc->va, 0);
502 bcmfb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
509 bcmfb_init(int unit, video_adapter_t *adp, int flags)
511 struct bcmsc_softc *sc;
514 sc = (struct bcmsc_softc *)adp;
517 vid_init_struct(adp, "bcmfb", -1, unit);
519 sc->font = dflt_font_16;
520 vi->vi_cheight = BCMFB_FONT_HEIGHT;
521 vi->vi_cwidth = BCMFB_FONT_WIDTH;
522 vi->vi_width = sc->width / vi->vi_cwidth;
523 vi->vi_height = sc->height / vi->vi_cheight;
526 * Clamp width/height to syscons maximums
528 if (vi->vi_width > COL)
530 if (vi->vi_height > ROW)
533 sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
534 sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight)) / 2;
536 adp->va_window = (vm_offset_t) bcmfb_static_window;
537 adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
539 vid_register(&sc->va);
545 bcmfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
547 bcopy(&adp->va_info, info, sizeof(*info));
552 bcmfb_query_mode(video_adapter_t *adp, video_info_t *info)
558 bcmfb_set_mode(video_adapter_t *adp, int mode)
564 bcmfb_save_font(video_adapter_t *adp, int page, int size, int width,
565 u_char *data, int c, int count)
571 bcmfb_load_font(video_adapter_t *adp, int page, int size, int width,
572 u_char *data, int c, int count)
574 struct bcmsc_softc *sc;
576 sc = (struct bcmsc_softc *)adp;
583 bcmfb_show_font(video_adapter_t *adp, int page)
589 bcmfb_save_palette(video_adapter_t *adp, u_char *palette)
595 bcmfb_load_palette(video_adapter_t *adp, u_char *palette)
601 bcmfb_set_border(video_adapter_t *adp, int border)
603 return (bcmfb_blank_display(adp, border));
607 bcmfb_save_state(video_adapter_t *adp, void *p, size_t size)
613 bcmfb_load_state(video_adapter_t *adp, void *p)
619 bcmfb_set_win_org(video_adapter_t *adp, off_t offset)
625 bcmfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
633 bcmfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
639 bcmfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
640 int celsize, int blink)
646 bcmfb_blank_display(video_adapter_t *adp, int mode)
649 struct bcmsc_softc *sc;
651 sc = (struct bcmsc_softc *)adp;
652 if (sc && sc->fb_addr)
653 memset((void*)sc->fb_addr, 0, sc->fb_size);
659 bcmfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
660 int prot, vm_memattr_t *memattr)
662 struct bcmsc_softc *sc;
664 sc = (struct bcmsc_softc *)adp;
667 * This might be a legacy VGA mem request: if so, just point it at the
668 * framebuffer, since it shouldn't be touched
670 if (offset < sc->stride*sc->height) {
671 *paddr = sc->fb_paddr + offset;
679 bcmfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
681 struct bcmsc_softc *sc;
684 sc = (struct bcmsc_softc *)adp;
688 fb = (struct fbtype *)data;
689 fb->fb_type = FBTYPE_PCIMISC;
690 fb->fb_height = sc->height;
691 fb->fb_width = sc->width;
692 fb->fb_depth = sc->depth;
693 if (sc->depth <= 1 || sc->depth > 8)
696 fb->fb_cmsize = 1 << sc->depth;
697 fb->fb_size = sc->fb_size;
700 return (fb_commonioctl(adp, cmd, data));
707 bcmfb_clear(video_adapter_t *adp)
710 return (bcmfb_blank_display(adp, 0));
714 bcmfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
721 bcmfb_bitblt(video_adapter_t *adp, ...)
728 bcmfb_diag(video_adapter_t *adp, int level)
735 bcmfb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
742 bcmfb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
749 bcmfb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
756 bcmfb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
757 int size, int bpp, int bit_ltor, int byte_ltor)
764 bcmfb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
766 int bytes, col, i, j, k, row;
767 struct bcmsc_softc *sc;
769 uint8_t *addr, fg, bg, color;
772 sc = (struct bcmsc_softc *)adp;
774 if (sc->fb_addr == 0)
777 row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
778 col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
779 p = sc->font + c*BCMFB_FONT_HEIGHT;
780 addr = (uint8_t *)sc->fb_addr
781 + (row + sc->ymargin)*(sc->stride)
782 + (sc->depth/8) * (col + sc->xmargin);
787 bytes = sc->depth / 8;
788 for (i = 0; i < BCMFB_FONT_HEIGHT; i++) {
789 for (j = 0, k = 7; j < 8; j++, k--) {
790 if ((p[i] & (1 << k)) == 0)
799 addr[bytes * j + 0] =
800 bcmfb_palette[color].b;
801 addr[bytes * j + 1] =
802 bcmfb_palette[color].g;
803 addr[bytes * j + 2] =
804 bcmfb_palette[color].r;
806 addr[bytes * j + 0] =
807 bcmfb_palette[color].r;
808 addr[bytes * j + 1] =
809 bcmfb_palette[color].g;
810 addr[bytes * j + 2] =
811 bcmfb_palette[color].b;
814 addr[bytes * j + 3] =
815 bcmfb_palette[color].a;
818 rgb = (bcmfb_palette[color].r >> 3) << 11;
819 rgb |= (bcmfb_palette[color].g >> 2) << 5;
820 rgb |= (bcmfb_palette[color].b >> 3);
821 addr[bytes * j] = rgb & 0xff;
822 addr[bytes * j + 1] = (rgb >> 8) & 0xff;
824 /* Not supported yet */
829 addr += (sc->stride);
836 bcmfb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
840 for (i = 0; i < len; i++)
841 bcmfb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
847 bcmfb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
848 uint32_t pixel_mask, int size, int width)