diff options
Diffstat (limited to 'sys/arch/sparc/dev/tcx.c')
| -rw-r--r-- | sys/arch/sparc/dev/tcx.c | 496 |
1 files changed, 496 insertions, 0 deletions
diff --git a/sys/arch/sparc/dev/tcx.c b/sys/arch/sparc/dev/tcx.c new file mode 100644 index 00000000000..608fb4e64c0 --- /dev/null +++ b/sys/arch/sparc/dev/tcx.c @@ -0,0 +1,496 @@ +/* $OpenBSD: tcx.c,v 1.1 1997/08/08 08:25:31 downsj Exp $ */ +/* $NetBSD: tcx.c,v 1.8 1997/07/29 09:58:14 fair Exp $ */ + +/* + * Copyright (c) 1996 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Paul Kranenburg. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 REGENTS 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. + */ + +/* + * color display (TCX) driver. + * + * Does not handle interrupts, even though they can occur. + * + * XXX should defer colormap updates to vertical retrace interrupts + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/buf.h> +#include <sys/device.h> +#include <machine/fbio.h> +#include <sys/ioctl.h> +#include <sys/malloc.h> +#include <sys/mman.h> +#include <sys/tty.h> +#include <sys/conf.h> + +#ifdef DEBUG +#include <sys/proc.h> +#include <sys/syslog.h> +#endif + +#include <vm/vm.h> + +#include <machine/autoconf.h> +#include <machine/pmap.h> +#include <machine/fbvar.h> +#include <machine/cpu.h> +#include <machine/conf.h> + +#include <sparc/dev/btreg.h> +#include <sparc/dev/btvar.h> +#include <sparc/dev/tcxreg.h> +#include <sparc/dev/sbusvar.h> + +#if 0 +union cursor_cmap { /* colormap, like bt_cmap, but tiny */ + u_char cm_map[2][3]; /* 2 R/G/B entries */ + u_int cm_chip[2]; /* 2 chip equivalents */ +}; + +struct tcx_cursor { /* tcx hardware cursor status */ + short cc_enable; /* cursor is enabled */ + struct fbcurpos cc_pos; /* position */ + struct fbcurpos cc_hot; /* hot-spot */ + struct fbcurpos cc_size; /* size of mask & image fields */ + u_int cc_bits[2][32]; /* space for mask & image bits */ + union cursor_cmap cc_color; /* cursor colormap */ +}; +#endif + +/* per-display variables */ +struct tcx_softc { + struct device sc_dev; /* base device */ + struct sbusdev sc_sd; /* sbus device */ + struct fbdevice sc_fb; /* frame buffer device */ + struct rom_reg sc_physadr[TCX_NREG]; /* phys addr of h/w */ + int sc_bustype; /* type of bus we live on */ + volatile struct bt_regs *sc_bt; /* Brooktree registers */ + volatile struct tcx_thc *sc_thc; /* THC registers */ + short sc_blanked; /* true if blanked */ + union bt_cmap sc_cmap; /* Brooktree color map */ +}; + +/* autoconfiguration driver */ +static void tcxattach __P((struct device *, struct device *, void *)); +static int tcxmatch __P((struct device *, void *, void *)); +static void tcx_unblank __P((struct device *)); + +/* cdevsw prototypes */ +cdev_decl(tcx); + +struct cfattach tcx_ca = { + sizeof(struct tcx_softc), tcxmatch, tcxattach +}; + +struct cfdriver tcx_cd = { + NULL, "tcx", DV_DULL +}; + +/* frame buffer generic driver */ +static struct fbdriver tcx_fbdriver = { + tcx_unblank, tcxopen, tcxclose, tcxioctl, tcxmmap +}; + +extern int fbnode; + +static void tcx_reset __P((struct tcx_softc *)); +static void tcx_loadcmap __P((struct tcx_softc *, int, int)); + +#define OBPNAME "SUNW,tcx" +/* + * Match a tcx. + */ +int +tcxmatch(parent, vcf, aux) + struct device *parent; + void *vcf, *aux; +{ + struct cfdata *cf = vcf; + struct confargs *ca = aux; + struct romaux *ra = &ca->ca_ra; + + if (strcmp(ra->ra_name, OBPNAME)) + return (0); + + /* + * Mask out invalid flags from the user. + */ + cf->cf_flags &= FB_USERMASK; + + if (ca->ca_bustype == BUS_SBUS) + return (1); + + return (0); +} + +/* + * Attach a display. + */ +void +tcxattach(parent, self, args) + struct device *parent, *self; + void *args; +{ + register struct tcx_softc *sc = (struct tcx_softc *)self; + register struct confargs *ca = args; + register int node = 0, ramsize, i; + register volatile struct bt_regs *bt; + struct fbdevice *fb = &sc->sc_fb; + int isconsole = 0, sbus = 1; + extern struct tty *fbconstty; + + fb->fb_driver = &tcx_fbdriver; + fb->fb_device = &sc->sc_dev; + fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; + + /* + * XXX - should be set to FBTYPE_TCX. + * XXX For CG3 emulation to work in current (96/6) X11 servers, + * XXX `fbtype' must point to an "unregocnised" entry. + */ + fb->fb_type.fb_type = FBTYPE_RESERVED3; + + if (ca->ca_ra.ra_nreg != TCX_NREG) + panic("tcx: oops"); + + /* Copy register address spaces */ + for (i = 0; i < TCX_NREG; i++) + sc->sc_physadr[i] = ca->ca_ra.ra_reg[i]; + + /* XXX - fix THC and TEC offsets */ + sc->sc_physadr[TCX_REG_TEC].rr_paddr += 0x1000; + sc->sc_physadr[TCX_REG_THC].rr_paddr += 0x1000; + + sc->sc_bt = bt = (volatile struct bt_regs *) + mapiodev(&ca->ca_ra.ra_reg[TCX_REG_CMAP], 0, sizeof *sc->sc_bt); + sc->sc_thc = (volatile struct tcx_thc *) + mapiodev(&ca->ca_ra.ra_reg[TCX_REG_THC], 0, sizeof *sc->sc_thc); + + switch (ca->ca_bustype) { + case BUS_SBUS: + node = ca->ca_ra.ra_node; + break; + + case BUS_OBIO: + default: + printf("TCX on bus 0x%x?\n", ca->ca_bustype); + return; + } + + fb->fb_type.fb_depth = node_has_property(node, "tcx-24-bit") + ? 24 + : (node_has_property(node, "tcx-8-bit") + ? 8 + : 8); + + fb_setsize(fb, fb->fb_type.fb_depth, 1152, 900, + node, ca->ca_bustype); + + ramsize = fb->fb_type.fb_height * fb->fb_linebytes; + fb->fb_type.fb_cmsize = 256; + fb->fb_type.fb_size = ramsize; + printf(": %s, %d x %d", OBPNAME, + fb->fb_type.fb_width, + fb->fb_type.fb_height); + + isconsole = node == fbnode && fbconstty != NULL; + + printf(", id %d, rev %d, sense %d", + (sc->sc_thc->thc_config & THC_CFG_FBID) >> THC_CFG_FBID_SHIFT, + (sc->sc_thc->thc_config & THC_CFG_REV) >> THC_CFG_REV_SHIFT, + (sc->sc_thc->thc_config & THC_CFG_SENSE) >> THC_CFG_SENSE_SHIFT + ); + + /* reset cursor & frame buffer controls */ + tcx_reset(sc); + + /* grab initial (current) color map (DOES THIS WORK?) */ + bt->bt_addr = 0; + for (i = 0; i < 256 * 3; i++) + ((char *)&sc->sc_cmap)[i] = bt->bt_cmap >> 24; + + /* enable video */ + sc->sc_thc->thc_hcmisc |= THC_MISC_VIDEN; + + if (isconsole) { + printf(" (console)\n"); + } else + printf("\n"); + + if (sbus) + sbus_establish(&sc->sc_sd, &sc->sc_dev); + if (node == fbnode) + fb_attach(&sc->sc_fb, isconsole); +} + +int +tcxopen(dev, flags, mode, p) + dev_t dev; + int flags, mode; + struct proc *p; +{ + int unit = minor(dev); + + if (unit >= tcx_cd.cd_ndevs || tcx_cd.cd_devs[unit] == NULL) + return (ENXIO); + return (0); +} + +int +tcxclose(dev, flags, mode, p) + dev_t dev; + int flags, mode; + struct proc *p; +{ + struct tcx_softc *sc = tcx_cd.cd_devs[minor(dev)]; + + tcx_reset(sc); + return (0); +} + +int +tcxioctl(dev, cmd, data, flags, p) + dev_t dev; + u_long cmd; + register caddr_t data; + int flags; + struct proc *p; +{ + register struct tcx_softc *sc = tcx_cd.cd_devs[minor(dev)]; + int error; + + switch (cmd) { + + case FBIOGTYPE: + *(struct fbtype *)data = sc->sc_fb.fb_type; + break; + + case FBIOGATTR: +#define fba ((struct fbgattr *)data) + fba->real_type = sc->sc_fb.fb_type.fb_type; + fba->owner = 0; /* XXX ??? */ + fba->fbtype = sc->sc_fb.fb_type; + fba->sattr.flags = 0; + fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; + fba->sattr.dev_specific[0] = -1; + fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; + fba->emu_types[1] = FBTYPE_SUN3COLOR; + fba->emu_types[2] = -1; +#undef fba + break; + + case FBIOGETCMAP: + return (bt_getcmap((struct fbcmap *)data, &sc->sc_cmap, 256)); + + case FBIOPUTCMAP: + /* copy to software map */ +#define p ((struct fbcmap *)data) + error = bt_putcmap(p, &sc->sc_cmap, 256); + if (error) + return (error); + /* now blast them into the chip */ + /* XXX should use retrace interrupt */ + tcx_loadcmap(sc, p->index, p->count); +#undef p + break; + + case FBIOGVIDEO: + *(int *)data = sc->sc_blanked; + break; + + case FBIOSVIDEO: + if (*(int *)data) + tcx_unblank(&sc->sc_dev); + else if (!sc->sc_blanked) { + sc->sc_blanked = 1; + sc->sc_thc->thc_hcmisc &= ~THC_MISC_VIDEN; + /* Put monitor in `power-saving mode' */ + sc->sc_thc->thc_hcmisc |= THC_MISC_VSYNC_DISABLE; + sc->sc_thc->thc_hcmisc |= THC_MISC_HSYNC_DISABLE; + } + break; + + default: +#ifdef DEBUG + log(LOG_NOTICE, "tcxioctl(0x%lx) (%s[%d])\n", cmd, + p->p_comm, p->p_pid); +#endif + return (ENOTTY); + } + return (0); +} + +/* + * Clean up hardware state (e.g., after bootup or after X crashes). + */ +static void +tcx_reset(sc) + register struct tcx_softc *sc; +{ + register volatile struct bt_regs *bt; + + /* Enable cursor in Brooktree DAC. */ + bt = sc->sc_bt; + bt->bt_addr = 0x06 << 24; + bt->bt_ctrl |= 0x03 << 24; +} + +/* + * Load a subset of the current (new) colormap into the color DAC. + */ +static void +tcx_loadcmap(sc, start, ncolors) + register struct tcx_softc *sc; + register int start, ncolors; +{ + register volatile struct bt_regs *bt; + register u_int *ip, i; + register int count; + + ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ + count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; + bt = sc->sc_bt; + bt->bt_addr = BT_D4M4(start) << 24; + while (--count >= 0) { + i = *ip++; + /* hardware that makes one want to pound boards with hammers */ + bt->bt_cmap = i; + bt->bt_cmap = i << 8; + bt->bt_cmap = i << 16; + bt->bt_cmap = i << 24; + } +} + +static void +tcx_unblank(dev) + struct device *dev; +{ + struct tcx_softc *sc = (struct tcx_softc *)dev; + + if (sc->sc_blanked) { + sc->sc_blanked = 0; + sc->sc_thc->thc_hcmisc &= ~THC_MISC_VSYNC_DISABLE; + sc->sc_thc->thc_hcmisc &= ~THC_MISC_HSYNC_DISABLE; + sc->sc_thc->thc_hcmisc |= THC_MISC_VIDEN; + } +} + +/* + * Base addresses at which users can mmap() the various pieces of a tcx. + */ +#define TCX_USER_RAM 0x00000000 +#define TCX_USER_RAM24 0x01000000 +#define TCX_USER_RAM_COMPAT 0x04000000 /* cg3 emulation */ +#define TCX_USER_STIP 0x10000000 +#define TCX_USER_BLIT 0x20000000 +#define TCX_USER_RDFB32 0x28000000 +#define TCX_USER_RSTIP 0x30000000 +#define TCX_USER_RBLIT 0x38000000 +#define TCX_USER_TEC 0x70001000 +#define TCX_USER_BTREGS 0x70002000 +#define TCX_USER_THC 0x70004000 +#define TCX_USER_DHC 0x70008000 +#define TCX_USER_ALT 0x7000a000 +#define TCX_USER_UART 0x7000c000 +#define TCX_USER_VRT 0x7000e000 +#define TCX_USER_ROM 0x70010000 + +struct mmo { + u_int mo_uaddr; /* user (virtual) address */ + u_int mo_size; /* size, or 0 for video ram size */ + u_int mo_bank; /* register bank number */ +}; + +/* + * Return the address that would map the given device at the given + * offset, allowing for the given protection, or return -1 for error. + * + * XXX needs testing against `demanding' applications (e.g., aviator) + */ +int +tcxmmap(dev, off, prot) + dev_t dev; + int off, prot; +{ + register struct tcx_softc *sc = tcx_cd.cd_devs[minor(dev)]; + register struct mmo *mo; + register u_int u, sz; + static struct mmo mmo[] = { + { TCX_USER_RAM, 0, TCX_REG_DFB8 }, + { TCX_USER_RAM24, 0, TCX_REG_DFB24 }, + { TCX_USER_RAM_COMPAT, 0, TCX_REG_DFB8 }, + + { TCX_USER_STIP, 1, TCX_REG_STIP }, + { TCX_USER_BLIT, 1, TCX_REG_BLIT }, + { TCX_USER_RDFB32, 1, TCX_REG_RDFB32 }, + { TCX_USER_RSTIP, 1, TCX_REG_RSTIP }, + { TCX_USER_RBLIT, 1, TCX_REG_RBLIT }, + { TCX_USER_TEC, 1, TCX_REG_TEC }, + { TCX_USER_BTREGS, 8192 /* XXX */, TCX_REG_CMAP }, + { TCX_USER_THC, sizeof(struct tcx_thc), TCX_REG_THC }, + { TCX_USER_DHC, 1, TCX_REG_DHC }, + { TCX_USER_ALT, 1, TCX_REG_ALT }, + { TCX_USER_ROM, 65536, TCX_REG_ROM }, + }; +#define NMMO (sizeof mmo / sizeof *mmo) + + if (off & PGOFSET) + panic("tcxmmap"); + + /* + * Entries with size 0 map video RAM (i.e., the size in fb data). + * + * Since we work in pages, the fact that the map offset table's + * sizes are sometimes bizarre (e.g., 1) is effectively ignored: + * one byte is as good as one page. + */ + for (mo = mmo; mo < &mmo[NMMO]; mo++) { + if ((u_int)off < mo->mo_uaddr) + continue; + u = off - mo->mo_uaddr; + sz = mo->mo_size ? mo->mo_size : sc->sc_fb.fb_type.fb_size; + if (u < sz) + return (REG2PHYS(&sc->sc_physadr[mo->mo_bank], u) | + PMAP_NC); + } +#ifdef DEBUG + { + register struct proc *p = curproc; /* XXX */ + log(LOG_NOTICE, "tcxmmap(0x%x) (%s[%d])\n", off, p->p_comm, p->p_pid); + } +#endif + return (-1); /* not a user-map offset */ +} |