/*- * Copyright (c) 2011 Nathan Whitehorn * 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 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 AUTHOR 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 __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #ifdef __sparc64__ #include #endif #include #include #include struct ofwfb_softc { struct fb_info fb; phandle_t sc_node; ihandle_t sc_handle; bus_space_tag_t sc_memt; int iso_palette; }; static void ofwfb_initialize(struct vt_device *vd); static vd_probe_t ofwfb_probe; static vd_init_t ofwfb_init; static vd_bitblt_text_t ofwfb_bitblt_text; static vd_bitblt_bmp_t ofwfb_bitblt_bitmap; static const struct vt_driver vt_ofwfb_driver = { .vd_name = "ofwfb", .vd_probe = ofwfb_probe, .vd_init = ofwfb_init, .vd_blank = vt_fb_blank, .vd_bitblt_text = ofwfb_bitblt_text, .vd_bitblt_bmp = ofwfb_bitblt_bitmap, .vd_fb_ioctl = vt_fb_ioctl, .vd_fb_mmap = vt_fb_mmap, .vd_priority = VD_PRIORITY_GENERIC+1, }; static unsigned char ofw_colors[16] = { /* See "16-color Text Extension" Open Firmware document, page 4 */ 0, 4, 2, 6, 1, 5, 3, 7, 8, 12, 10, 14, 9, 13, 11, 15 }; static struct ofwfb_softc ofwfb_conssoftc; VT_DRIVER_DECLARE(vt_ofwfb, vt_ofwfb_driver); static int ofwfb_probe(struct vt_device *vd) { phandle_t chosen, node; ihandle_t stdout; char type[64]; chosen = OF_finddevice("/chosen"); OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)); node = OF_instance_to_package(stdout); if (node == -1) { /* * The "/chosen/stdout" does not exist try * using "screen" directly. */ node = OF_finddevice("screen"); } OF_getprop(node, "device_type", type, sizeof(type)); if (strcmp(type, "display") != 0) return (CN_DEAD); /* Looks OK... */ return (CN_INTERNAL); } static void ofwfb_bitblt_bitmap(struct vt_device *vd, const struct vt_window *vw, const uint8_t *pattern, const uint8_t *mask, unsigned int width, unsigned int height, unsigned int x, unsigned int y, term_color_t fg, term_color_t bg) { struct fb_info *sc = vd->vd_softc; u_long line; uint32_t fgc, bgc; int c, l; uint8_t b, m; union { uint32_t l; uint8_t c[4]; } ch1, ch2; #ifdef __powerpc__ /* Deal with unmapped framebuffers */ if (sc->fb_flags & FB_FLAG_NOWRITE) { if (pmap_bootstrapped) { sc->fb_flags &= ~FB_FLAG_NOWRITE; ofwfb_initialize(vd); } else { return; } } #endif fgc = sc->fb_cmap[fg]; bgc = sc->fb_cmap[bg]; b = m = 0; if (((struct ofwfb_softc *)vd->vd_softc)->iso_palette) { fg = ofw_colors[fg]; bg = ofw_colors[bg]; } line = (sc->fb_stride * y) + x * sc->fb_bpp/8; if (mask == NULL && sc->fb_bpp == 8 && (width % 8 == 0)) { /* Don't try to put off screen pixels */ if (((x + width) > vd->vd_width) || ((y + height) > vd->vd_height)) return; for (; height > 0; height--) { for (c = 0; c < width; c += 8) { b = *pattern++; /* * Assume that there is more background than * foreground in characters and init accordingly */ ch1.l = ch2.l = (bg << 24) | (bg << 16) | (bg << 8) | bg; /* * Calculate 2 x 4-chars at a time, and then * write these out. */ if (b & 0x80) ch1.c[0] = fg; if (b & 0x40) ch1.c[1] = fg; if (b & 0x20) ch1.c[2] = fg; if (b & 0x10) ch1.c[3] = fg; if (b & 0x08) ch2.c[0] = fg; if (b & 0x04) ch2.c[1] = fg; if (b & 0x02) ch2.c[2] = fg; if (b & 0x01) ch2.c[3] = fg; *(uint32_t *)(sc->fb_vbase + line + c) = ch1.l; *(uint32_t *)(sc->fb_vbase + line + c + 4) = ch2.l; } line += sc->fb_stride; } } else { for (l = 0; l < height && y + l < vw->vw_draw_area.tr_end.tp_row; l++) { for (c = 0; c < width && x + c < vw->vw_draw_area.tr_end.tp_col; c++) { if (c % 8 == 0) b = *pattern++; else b <<= 1; if (mask != NULL) { if (c % 8 == 0) m = *mask++; else m <<= 1; /* Skip pixel write, if mask not set. */ if ((m & 0x80) == 0) continue; } switch(sc->fb_bpp) { case 8: *(uint8_t *)(sc->fb_vbase + line + c) = b & 0x80 ? fg : bg; break; case 32: *(uint32_t *)(sc->fb_vbase + line + 4*c) = (b & 0x80) ? fgc : bgc; break; default: /* panic? */ break; } } line += sc->fb_stride; } } } void ofwfb_bitblt_text(struct vt_device *vd, const struct vt_window *vw, const term_rect_t *area) { unsigned int col, row, x, y; struct vt_font *vf; term_char_t c; term_color_t fg, bg; const uint8_t *pattern; vf = vw->vw_font; for (row = area->tr_begin.tp_row; row < area->tr_end.tp_row; ++row) { for (col = area->tr_begin.tp_col; col < area->tr_end.tp_col; ++col) { x = col * vf->vf_width + vw->vw_draw_area.tr_begin.tp_col; y = row * vf->vf_height + vw->vw_draw_area.tr_begin.tp_row; c = VTBUF_GET_FIELD(&vw->vw_buf, row, col); pattern = vtfont_lookup(vf, c); vt_determine_colors(c, VTBUF_ISCURSOR(&vw->vw_buf, row, col), &fg, &bg); ofwfb_bitblt_bitmap(vd, vw, pattern, NULL, vf->vf_width, vf->vf_height, x, y, fg, bg); } } #ifndef SC_NO_CUTPASTE if (!vd->vd_mshown) return; term_rect_t drawn_area; drawn_area.tr_begin.tp_col = area->tr_begin.tp_col * vf->vf_width; drawn_area.tr_begin.tp_row = area->tr_begin.tp_row * vf->vf_height; drawn_area.tr_end.tp_col = area->tr_end.tp_col * vf->vf_width; drawn_area.tr_end.tp_row = area->tr_end.tp_row * vf->vf_height; if (vt_is_cursor_in_area(vd, &drawn_area)) { ofwfb_bitblt_bitmap(vd, vw, vd->vd_mcursor->map, vd->vd_mcursor->mask, vd->vd_mcursor->width, vd->vd_mcursor->height, vd->vd_mx_drawn + vw->vw_draw_area.tr_begin.tp_col, vd->vd_my_drawn + vw->vw_draw_area.tr_begin.tp_row, vd->vd_mcursor_fg, vd->vd_mcursor_bg); } #endif } static void ofwfb_initialize(struct vt_device *vd) { struct ofwfb_softc *sc = vd->vd_softc; int i, err; cell_t retval; uint32_t oldpix; sc->fb.fb_cmsize = 16; if (sc->fb.fb_flags & FB_FLAG_NOWRITE) return; /* * Set up the color map */ sc->iso_palette = 0; switch (sc->fb.fb_bpp) { case 8: vt_generate_cons_palette(sc->fb.fb_cmap, COLOR_FORMAT_RGB, 255, 16, 255, 8, 255, 0); for (i = 0; i < 16; i++) { err = OF_call_method("color!", sc->sc_handle, 4, 1, (cell_t)((sc->fb.fb_cmap[i] >> 16) & 0xff), (cell_t)((sc->fb.fb_cmap[i] >> 8) & 0xff), (cell_t)((sc->fb.fb_cmap[i] >> 0) & 0xff), (cell_t)i, &retval); if (err) break; } if (i != 16) sc->iso_palette = 1; break; case 32: /* * We bypass the usual bus_space_() accessors here, mostly * for performance reasons. In particular, we don't want * any barrier operations that may be performed and handle * endianness slightly different. Figure out the host-view * endianness of the frame buffer. */ oldpix = bus_space_read_4(sc->sc_memt, sc->fb.fb_vbase, 0); bus_space_write_4(sc->sc_memt, sc->fb.fb_vbase, 0, 0xff000000); if (*(uint8_t *)(sc->fb.fb_vbase) == 0xff) vt_generate_cons_palette(sc->fb.fb_cmap, COLOR_FORMAT_RGB, 255, 0, 255, 8, 255, 16); else vt_generate_cons_palette(sc->fb.fb_cmap, COLOR_FORMAT_RGB, 255, 16, 255, 8, 255, 0); bus_space_write_4(sc->sc_memt, sc->fb.fb_vbase, 0, oldpix); break; default: panic("Unknown color space depth %d", sc->fb.fb_bpp); break; } } static int ofwfb_init(struct vt_device *vd) { struct ofwfb_softc *sc; char type[64]; phandle_t chosen; phandle_t node; uint32_t depth, height, width, stride; uint32_t fb_phys; int i, len; #ifdef __sparc64__ static struct bus_space_tag ofwfb_memt[1]; bus_addr_t phys; int space; #endif /* Initialize softc */ vd->vd_softc = sc = &ofwfb_conssoftc; chosen = OF_finddevice("/chosen"); OF_getprop(chosen, "stdout", &sc->sc_handle, sizeof(ihandle_t)); node = OF_instance_to_package(sc->sc_handle); if (node == -1) { /* * The "/chosen/stdout" does not exist try * using "screen" directly. */ node = OF_finddevice("screen"); sc->sc_handle = OF_open("screen"); } OF_getprop(node, "device_type", type, sizeof(type)); if (strcmp(type, "display") != 0) return (CN_DEAD); /* Keep track of the OF node */ sc->sc_node = node; /* * Try to use a 32-bit framebuffer if possible. This may be * unimplemented and fail. That's fine -- it just means we are * stuck with the defaults. */ OF_call_method("set-depth", sc->sc_handle, 1, 1, (cell_t)32, &i); /* Make sure we have needed properties */ if (OF_getproplen(node, "height") != sizeof(height) || OF_getproplen(node, "width") != sizeof(width) || OF_getproplen(node, "depth") != sizeof(depth) || OF_getproplen(node, "linebytes") != sizeof(sc->fb.fb_stride)) return (CN_DEAD); /* Only support 8 and 32-bit framebuffers */ OF_getprop(node, "depth", &depth, sizeof(depth)); if (depth != 8 && depth != 32) return (CN_DEAD); sc->fb.fb_bpp = sc->fb.fb_depth = depth; OF_getprop(node, "height", &height, sizeof(height)); OF_getprop(node, "width", &width, sizeof(width)); OF_getprop(node, "linebytes", &stride, sizeof(stride)); sc->fb.fb_height = height; sc->fb.fb_width = width; sc->fb.fb_stride = stride; sc->fb.fb_size = sc->fb.fb_height * sc->fb.fb_stride; /* * Grab the physical address of the framebuffer, and then map it * into our memory space. If the MMU is not yet up, it will be * remapped for us when relocation turns on. */ if (OF_getproplen(node, "address") == sizeof(fb_phys)) { /* XXX We assume #address-cells is 1 at this point. */ OF_getprop(node, "address", &fb_phys, sizeof(fb_phys)); #if defined(__powerpc__) sc->sc_memt = &bs_be_tag; bus_space_map(sc->sc_memt, fb_phys, sc->fb.fb_size, BUS_SPACE_MAP_PREFETCHABLE, &sc->fb.fb_vbase); #elif defined(__sparc64__) OF_decode_addr(node, 0, &space, &phys); sc->sc_memt = &ofwfb_memt[0]; sc->fb.fb_vbase = sparc64_fake_bustag(space, fb_phys, sc->sc_memt); #elif defined(__arm__) sc->sc_memt = fdtbus_bs_tag; bus_space_map(sc->sc_memt, sc->fb.fb_pbase, sc->fb.fb_size, BUS_SPACE_MAP_PREFETCHABLE, (bus_space_handle_t *)&sc->fb.fb_vbase); #else #error Unsupported platform! #endif sc->fb.fb_pbase = fb_phys; } else { /* * Some IBM systems don't have an address property. Try to * guess the framebuffer region from the assigned addresses. * This is ugly, but there doesn't seem to be an alternative. * Linux does the same thing. */ struct ofw_pci_register pciaddrs[8]; int num_pciaddrs = 0; /* * Get the PCI addresses of the adapter, if present. The node * may be the child of the PCI device: in that case, try the * parent for the assigned-addresses property. */ len = OF_getprop(node, "assigned-addresses", pciaddrs, sizeof(pciaddrs)); if (len == -1) { len = OF_getprop(OF_parent(node), "assigned-addresses", pciaddrs, sizeof(pciaddrs)); } if (len == -1) len = 0; num_pciaddrs = len / sizeof(struct ofw_pci_register); fb_phys = num_pciaddrs; for (i = 0; i < num_pciaddrs; i++) { /* If it is too small, not the framebuffer */ if (pciaddrs[i].size_lo < sc->fb.fb_stride * height) continue; /* If it is not memory, it isn't either */ if (!(pciaddrs[i].phys_hi & OFW_PCI_PHYS_HI_SPACE_MEM32)) continue; /* This could be the framebuffer */ fb_phys = i; /* If it is prefetchable, it certainly is */ if (pciaddrs[i].phys_hi & OFW_PCI_PHYS_HI_PREFETCHABLE) break; } if (fb_phys == num_pciaddrs) /* No candidates found */ return (CN_DEAD); #if defined(__powerpc__) OF_decode_addr(node, fb_phys, &sc->sc_memt, &sc->fb.fb_vbase); sc->fb.fb_pbase = sc->fb.fb_vbase; /* 1:1 mapped */ #ifdef __powerpc64__ /* Real mode under a hypervisor probably doesn't cover FB */ if (!(mfmsr() & (PSL_HV | PSL_DR))) sc->fb.fb_flags |= FB_FLAG_NOWRITE; #endif #else /* No ability to interpret assigned-addresses otherwise */ return (CN_DEAD); #endif } ofwfb_initialize(vd); vt_fb_init(vd); return (CN_INTERNAL); }