/* $NetBSD: igmafb.c,v 1.4 2021/08/07 16:19:14 thorpej Exp $ */ /* * Copyright (c) 2012 Michael van Elst * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* * Intel Graphic Media Accelerator */ #include __KERNEL_RCSID(0, "$NetBSD: igmafb.c,v 1.4 2021/08/07 16:19:14 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "opt_voyagerfb.h" struct igmafb_softc { device_t sc_dev; int sc_width; int sc_height; int sc_depth; int sc_stride; void *sc_fbaddr; bus_size_t sc_fbsize; 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; struct igma_chip sc_chip; void *sc_vga_save; int sc_backlight; int sc_brightness; int sc_brightness_max; }; static int igmafb_match(device_t, cfdata_t, void *); static void igmafb_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(igmafb, sizeof(struct igmafb_softc), igmafb_match, igmafb_attach, NULL, NULL); static int igmafb_ioctl(void *, void *, u_long, void *, int, struct lwp *); static paddr_t igmafb_mmap(void *, void *, off_t, int); static void igmafb_pollc(void *v, int); static /*const*/ struct wsdisplay_accessops igmafb_accessops = { igmafb_ioctl, igmafb_mmap, NULL, /* alloc_screen */ NULL, /* free_screen */ NULL, /* show_screen */ NULL, /* load_font */ igmafb_pollc, /* pollc */ NULL /* scroll */ }; static void igmafb_init_screen(void *, struct vcons_screen *, int, long *); static void igmafb_guess_size(struct igmafb_softc *, int *, int*); static void igmafb_set_mode(struct igmafb_softc *, bool); static void igmafb_planestart_quirk(struct igmafb_softc *); static void igmafb_pfitdisable_quirk(struct igmafb_softc *); static void igmafb_get_brightness_max(struct igmafb_softc *, int *); static void igmafb_get_brightness(struct igmafb_softc *, int *); static void igmafb_set_brightness(struct igmafb_softc *, int); static int igmafb_match(device_t parent, cfdata_t match, void *aux) { struct igma_attach_args *iaa = (struct igma_attach_args *)aux; if (strcmp(iaa->iaa_name, "igmafb") == 0) return 100; return 0; } static void igmafb_attach(device_t parent, device_t self, void *aux) { struct igmafb_softc *sc = device_private(self); struct igma_attach_args *iaa = (struct igma_attach_args *)aux; struct rasops_info *ri; prop_dictionary_t dict; bool is_console; unsigned long defattr; struct wsemuldisplaydev_attach_args waa; sc->sc_dev = self; aprint_normal("\n"); dict = device_properties(self); prop_dictionary_get_bool(dict, "is_console", &is_console); if (iaa->iaa_console) is_console = true; sc->sc_chip = iaa->iaa_chip; sc->sc_fbaddr = bus_space_vaddr(sc->sc_chip.gmt, sc->sc_chip.gmh); sc->sc_fbsize = 16 * 1024 * 1024; igmafb_guess_size(sc, &sc->sc_width, &sc->sc_height); sc->sc_depth = 32; sc->sc_stride = (sc->sc_width*4 + 511)/512*512; aprint_normal("%s: %d x %d, %d bit, stride %d\n", device_xname(self), sc->sc_width, sc->sc_height, sc->sc_depth, sc->sc_stride); aprint_normal("%s: %d MB video memory at %p\n", device_xname(self), (int)sc->sc_fbsize >> 20, (void *)sc->sc_chip.gmb); sc->sc_vga_save = kmem_alloc(256*1024, KM_SLEEP); igmafb_get_brightness(sc, &sc->sc_brightness); igmafb_get_brightness_max(sc, &sc->sc_brightness_max); sc->sc_backlight = sc->sc_brightness != 0; 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}; vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr, &igmafb_accessops); sc->vd.init_screen = igmafb_init_screen; /* enable hardware display */ igmafb_set_mode(sc, true); ri = &sc->sc_console_screen.scr_ri; if (is_console) { vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, &defattr); sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC | VCONS_NO_COPYROWS | VCONS_NO_COPYCOLS; vcons_redraw_screen(&sc->sc_console_screen); 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 { if (sc->sc_console_screen.scr_ri.ri_rows == 0) { /* do some minimal setup to avoid weirdness later */ vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, &defattr); } else (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); } waa.console = is_console; waa.scrdata = &sc->sc_screenlist; waa.accessops = &igmafb_accessops; waa.accesscookie = &sc->vd; config_found(sc->sc_dev, &waa, wsemuldisplaydevprint, CFARGS_NONE); } /* * wsdisplay accessops */ static int igmafb_ioctl(void *v, void *vs, u_long cmd, void *data, int flags, struct lwp *l) { struct vcons_data *vd = v; struct igmafb_softc *sc = vd->cookie; struct wsdisplay_fbinfo *wdf; struct vcons_screen *ms = vd->active; struct wsdisplayio_fbinfo *fbi; struct wsdisplay_param *param; int val; switch (cmd) { case WSDISPLAYIO_GTYPE: *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; return 0; case WSDISPLAYIO_GINFO: if (ms == NULL) return ENODEV; wdf = data; wdf->width = ms->scr_ri.ri_width; wdf->height = ms->scr_ri.ri_height; wdf->depth = ms->scr_ri.ri_depth; wdf->cmsize = 256; /* XXX */ return 0; case WSDISPLAYIO_LINEBYTES: if (ms == NULL) return ENODEV; *(u_int *)data = ms->scr_ri.ri_stride; return 0; case WSDISPLAYIO_GET_FBINFO: fbi = data; return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); case WSDISPLAYIO_SVIDEO: val = (*(u_int *)data) != WSDISPLAYIO_VIDEO_OFF; sc->sc_backlight = val; if (val) igmafb_set_brightness(sc, sc->sc_brightness); else igmafb_set_brightness(sc, 0); return 0; case WSDISPLAYIO_GETPARAM: param = (struct wsdisplay_param *)data; switch (param->param) { case WSDISPLAYIO_PARAM_BRIGHTNESS: param->min = 0; param->max = 255; if (sc->sc_backlight) igmafb_get_brightness(sc, &val); else val = sc->sc_brightness; val = val * 255 / sc->sc_brightness_max; param->curval = val; return 0; case WSDISPLAYIO_PARAM_BACKLIGHT: param->min = 0; param->max = 1; param->curval = sc->sc_backlight; return 0; } return EPASSTHROUGH; case WSDISPLAYIO_SETPARAM: param = (struct wsdisplay_param *)data; switch (param->param) { case WSDISPLAYIO_PARAM_BRIGHTNESS: val = param->curval; if (val < 0) val = 0; if (val > 255) val = 255; val = val * sc->sc_brightness_max / 255; sc->sc_brightness = val; if (sc->sc_backlight) igmafb_set_brightness(sc, val); return 0; case WSDISPLAYIO_PARAM_BACKLIGHT: val = param->curval; sc->sc_backlight = val; if (val) igmafb_set_brightness(sc, sc->sc_brightness); else igmafb_set_brightness(sc, 0); return 0; } return EPASSTHROUGH; } return EPASSTHROUGH; } static paddr_t igmafb_mmap(void *v, void *vs, off_t offset, int prot) { struct vcons_data *vd = v; struct igmafb_softc *sc = vd->cookie; if ((offset & PAGE_MASK) != 0) return -1; if (offset < 0 || offset >= sc->sc_fbsize) return -1; return bus_space_mmap(sc->sc_chip.gmt, sc->sc_chip.gmb, offset, prot, BUS_SPACE_MAP_LINEAR); } static void igmafb_pollc(void *v, int on) { struct vcons_data *vd = v; struct igmafb_softc *sc = vd->cookie; if (sc == NULL) return; if (sc->sc_console_screen.scr_vd == NULL) return; if (on) vcons_enable_polling(&sc->vd); else vcons_disable_polling(&sc->vd); } static void igmafb_init_screen(void *cookie, struct vcons_screen *scr, int existing, long *defattr) { struct igmafb_softc *sc = cookie; struct rasops_info *ri = &scr->scr_ri; memset(ri, 0, sizeof(struct rasops_info)); 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 = (char *)sc->sc_fbaddr; if (existing) { ri->ri_flg |= RI_CLEAR; } switch (sc->sc_depth) { case 32: ri->ri_rnum = 8; ri->ri_gnum = 8; ri->ri_bnum = 8; ri->ri_rpos = 16; ri->ri_gpos = 8; ri->ri_bpos = 0; break; } rasops_init(ri, 0, 0); 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; } static void igmafb_guess_size(struct igmafb_softc *sc, int *widthp, int *heightp) { const struct igma_chip *cd = &sc->sc_chip; const struct igma_chip_ops *co = cd->ops; int pipe = cd->use_pipe; u_int32_t r; r = co->read_reg(cd, PIPE_HTOTAL(pipe)); *widthp = PIPE_HTOTAL_GET_ACTIVE(r); r = co->read_reg(cd, PIPE_VTOTAL(pipe)); *heightp = PIPE_VTOTAL_GET_ACTIVE(r); aprint_normal("%s: vga active size %d x %d\n", device_xname(sc->sc_dev), *widthp, *heightp); if (*widthp < 640 || *heightp < 400) { r = co->read_reg(cd, PF_WINSZ(pipe)); *widthp = PF_WINSZ_GET_WIDTH(r); *heightp = PF_WINSZ_GET_HEIGHT(r); aprint_normal("%s: window size %d x %d\n", device_xname(sc->sc_dev), *widthp, *heightp); } if (*widthp < 640) *widthp = 640; if (*heightp < 400) *heightp = 400; } static void igmafb_set_mode(struct igmafb_softc *sc, bool enable) { const struct igma_chip *cd = &sc->sc_chip; const struct igma_chip_ops *co = cd->ops; int pipe = cd->use_pipe; u_int32_t r; u_int8_t b; int i; if (enable) { /* disable VGA machinery */ b = co->read_vga(cd, 0x01); co->write_vga(cd, 0x01, b | 0x20); /* disable VGA compatible display */ r = co->read_reg(cd, sc->sc_chip.vga_cntrl); co->write_reg(cd, sc->sc_chip.vga_cntrl, r | VGA_CNTRL_DISABLE); /* save VGA memory */ memcpy(sc->sc_vga_save, sc->sc_fbaddr, 256*1024); /* configure panel fitter */ co->write_reg(cd, PF_WINPOS(pipe), PF_WINPOS_VAL(0, 0)); co->write_reg(cd, PF_WINSZ(pipe), PF_WINSZ_VAL(sc->sc_width, sc->sc_height)); /* pipe size */ co->write_reg(cd, PIPE_SRCSZ(pipe), PIPE_SRCSZ_VAL(sc->sc_width, sc->sc_height)); /* enable pipe */ co->write_reg(cd, PIPE_CONF(pipe), PIPE_CONF_ENABLE | PIPE_CONF_8BPP); /* configure planes */ r = co->read_reg(cd, PRI_CTRL(pipe)); r &= ~(PRI_CTRL_PIXFMTMSK | PRI_CTRL_TILED); r |= PRI_CTRL_ENABLE | PRI_CTRL_BGR; co->write_reg(cd, PRI_CTRL(pipe), r | cd->pri_cntrl); co->write_reg(cd, PRI_LINOFF(pipe), 0); co->write_reg(cd, PRI_STRIDE(pipe), sc->sc_stride); co->write_reg(cd, PRI_SURF(pipe), 0); co->write_reg(cd, PRI_TILEOFF(pipe), 0); if (cd->quirks & IGMA_PLANESTART_QUIRK) igmafb_planestart_quirk(sc); if (cd->quirks & IGMA_PFITDISABLE_QUIRK) igmafb_pfitdisable_quirk(sc); } else { /* disable planes */ co->write_reg(cd, PRI_CTRL(pipe), 0 | cd->pri_cntrl); co->write_reg(cd, PRI_LINOFF(pipe), 0); co->write_reg(cd, PRI_STRIDE(pipe), 2560); co->write_reg(cd, PRI_SURF(pipe), 0); co->write_reg(cd, PRI_TILEOFF(pipe), 0); /* pipe size */ co->write_reg(cd, PIPE_SRCSZ(pipe), PIPE_SRCSZ_VAL(720,400)); /* disable pipe */ co->write_reg(cd, PIPE_CONF(pipe), 0); for (i=0; i<10; ++i) { delay(10); if ((co->read_reg(cd, PIPE_CONF(pipe)) & PIPE_CONF_STATE) == 0) break; } /* workaround before enabling VGA */ r = co->read_reg(cd, 0x42000); co->write_reg(cd, 0x42000, (r & 0x1fffffff) | 0xa0000000); r = co->read_reg(cd, 0x42004); co->write_reg(cd, 0x42004, (r & 0xfbffffff) | 0x00000000); /* configure panel fitter */ co->write_reg(cd, PF_WINPOS(pipe), PF_WINPOS_VAL(0, 0)); co->write_reg(cd, PF_WINSZ(pipe), PF_WINSZ_VAL(sc->sc_width, sc->sc_height)); /* enable VGA compatible display */ r = co->read_reg(cd, sc->sc_chip.vga_cntrl); co->write_reg(cd, sc->sc_chip.vga_cntrl, r & ~VGA_CNTRL_DISABLE); /* enable VGA machinery */ b = co->read_vga(cd, 0x01); co->write_vga(cd, 0x01, b & ~0x20); /* restore VGA memory */ memcpy(sc->sc_fbaddr, sc->sc_vga_save, 256*1024); /* enable pipe again */ co->write_reg(cd, PIPE_CONF(pipe), PIPE_CONF_ENABLE | PIPE_CONF_6BPP | PIPE_CONF_DITHER); } } static void igmafb_planestart_quirk(struct igmafb_softc *sc) { const struct igma_chip *cd = &sc->sc_chip; const struct igma_chip_ops *co = cd->ops; int pipe = cd->use_pipe; u_int32_t cntrl, fwbcl; /* disable self refresh */ fwbcl = co->read_reg(cd, FW_BLC_SELF); co->write_reg(cd, FW_BLC_SELF, fwbcl & ~FW_BLC_SELF_EN); cntrl = co->read_reg(cd, CUR_CNTR(pipe)); co->write_reg(cd, CUR_CNTR(pipe), 1<<5 | 0x07); /* "wait for vblank" */ delay(40000); co->write_reg(cd, CUR_CNTR(pipe), cntrl); co->write_reg(cd, CUR_BASE(pipe), co->read_reg(cd, CUR_BASE(pipe))); co->write_reg(cd, FW_BLC_SELF, fwbcl); } static void igmafb_pfitdisable_quirk(struct igmafb_softc *sc) { const struct igma_chip *cd = &sc->sc_chip; const struct igma_chip_ops *co = cd->ops; u_int32_t r; /* disable i965 panel fitter */ r = co->read_reg(cd, PF_CTRL_I965); co->write_reg(cd, PF_CTRL_I965, r & ~PF_ENABLE); } static void igmafb_get_brightness_max(struct igmafb_softc *sc, int *valp) { const struct igma_chip *cd = &sc->sc_chip; const struct igma_chip_ops *co = cd->ops; u_int32_t r, f; r = co->read_reg(cd, cd->backlight_cntrl); f = BACKLIGHT_GET_FREQ(r); if (f == 0) { r = co->read_reg(cd, RAWCLK_FREQ); f = r * 1000000 / (200 * 128); if (f == 0 || f > 32767) f = 125 * 100000 / (200 * 128); } *valp = f; } static void igmafb_get_brightness(struct igmafb_softc *sc, int *valp) { const struct igma_chip *cd = &sc->sc_chip; const struct igma_chip_ops *co = cd->ops; u_int32_t r, v; r = co->read_reg(cd, cd->backlight_cntrl); v = BACKLIGHT_GET_CYCLE(r); *valp = v; } static void igmafb_set_brightness(struct igmafb_softc *sc, int val) { const struct igma_chip *cd = &sc->sc_chip; const struct igma_chip_ops *co = cd->ops; u_int32_t r, f, l; r = co->read_reg(cd, cd->backlight_cntrl); f = BACKLIGHT_GET_FREQ(r); l = BACKLIGHT_GET_LEGACY(r); co->write_reg(cd, cd->backlight_cntrl, BACKLIGHT_VAL(f,l,val)); }