526 lines
14 KiB
C
526 lines
14 KiB
C
/* $NetBSD: p9100.c,v 1.4 2001/09/26 20:53:15 eeh Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* color display (p9100) driver.
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*
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* Does not handle interrupts, even though they can occur.
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*
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* XXX should defer colormap updates to vertical retrace interrupts
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/buf.h>
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#include <sys/device.h>
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#include <sys/ioctl.h>
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#include <sys/malloc.h>
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#include <sys/mman.h>
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#include <sys/tty.h>
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#include <sys/conf.h>
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#include <machine/bus.h>
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#include <machine/autoconf.h>
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#include <dev/sun/fbio.h>
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#include <dev/sun/fbvar.h>
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#include <dev/sun/btreg.h>
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#include <dev/sun/btvar.h>
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#if 0
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#include <dev/sbus/p9100reg.h>
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#endif
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#include <dev/sbus/sbusvar.h>
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#include "tctrl.h"
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#if NTCTRL > 0
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#include <machine/tctrl.h>
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#include <sparc/dev/tctrlvar.h>/*XXX*/
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#endif
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#include <machine/conf.h>
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/* per-display variables */
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struct p9100_softc {
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struct device sc_dev; /* base device */
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struct sbusdev sc_sd; /* sbus device */
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struct fbdevice sc_fb; /* frame buffer device */
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bus_space_tag_t sc_bustag;
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bus_type_t sc_ctl_btype; /* phys address description */
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bus_addr_t sc_ctl_paddr; /* for device mmap() */
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bus_size_t sc_ctl_psize; /* for device mmap() */
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bus_space_handle_t sc_ctl_memh; /* bus space handle */
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bus_type_t sc_cmd_btype; /* phys address description */
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bus_addr_t sc_cmd_paddr; /* for device mmap() */
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bus_size_t sc_cmd_psize; /* for device mmap() */
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bus_space_handle_t sc_cmd_memh; /* bus space handle */
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bus_type_t sc_fb_btype; /* phys address description */
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bus_addr_t sc_fb_paddr; /* for device mmap() */
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bus_size_t sc_fb_psize; /* for device mmap() */
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bus_space_handle_t sc_fb_memh; /* bus space handle */
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uint32_t sc_junk;
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union bt_cmap sc_cmap; /* Brooktree color map */
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};
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/* The Tadpole 3GX Technical Reference Manual lies. The ramdac registers
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* are map in 4 byte increments, not 8.
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*/
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#define SCRN_RPNT_CTL_1 0x0138 /* Screen Respaint Timing Control 1 */
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#define VIDEO_ENABLED 0x00000020
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#define PWRUP_CNFG 0x0194 /* Power Up Configuration */
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#define DAC_CMAP_WRIDX 0x0200 /* IBM RGB528 Palette Address (Write) */
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#define DAC_CMAP_DATA 0x0204 /* IBM RGB528 Palette Data */
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#define DAC_PXL_MASK 0x0208 /* IBM RGB528 Pixel Mask */
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#define DAC_CMAP_RDIDX 0x020c /* IBM RGB528 Palette Address (Read) */
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#define DAC_INDX_LO 0x0210 /* IBM RGB528 Index Low */
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#define DAC_INDX_HI 0x0214 /* IBM RGB528 Index High */
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#define DAC_INDX_DATA 0x0218 /* IBM RGB528 Index Data (Indexed Registers) */
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#define DAC_INDX_CTL 0x021c /* IBM RGB528 Index Control */
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/* autoconfiguration driver */
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static int p9100_sbus_match(struct device *, struct cfdata *, void *);
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static void p9100_sbus_attach(struct device *, struct device *, void *);
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static void p9100unblank(struct device *);
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static void p9100_shutdown(void *);
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/* cdevsw prototypes */
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cdev_decl(p9100);
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struct cfattach pnozz_ca = {
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sizeof(struct p9100_softc), p9100_sbus_match, p9100_sbus_attach
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};
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extern struct cfdriver pnozz_cd;
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/* frame buffer generic driver */
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static struct fbdriver p9100fbdriver = {
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p9100unblank, p9100open, p9100close, p9100ioctl, p9100poll,
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p9100mmap
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};
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static void p9100loadcmap(struct p9100_softc *, int, int);
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static void p9100_set_video(struct p9100_softc *, int);
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static int p9100_get_video(struct p9100_softc *);
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static uint32_t p9100_ctl_read_4(struct p9100_softc *, bus_size_t);
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static void p9100_ctl_write_4(struct p9100_softc *, bus_size_t, uint32_t);
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#if 0
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static uint8_t p9100_ramdac_read(struct p9100_softc *, bus_size_t);
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#endif
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static void p9100_ramdac_write(struct p9100_softc *, bus_size_t, uint8_t);
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/*
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* Match a p9100.
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*/
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static int
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p9100_sbus_match(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct sbus_attach_args *sa = aux;
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return (strcmp("p9100", sa->sa_name) == 0);
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}
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/*
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* Attach a display. We need to notice if it is the console, too.
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*/
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static void
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p9100_sbus_attach(struct device *parent, struct device *self, void *args)
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{
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struct p9100_softc *sc = (struct p9100_softc *)self;
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struct sbus_attach_args *sa = args;
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struct fbdevice *fb = &sc->sc_fb;
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int isconsole;
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int node;
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int i;
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/* Remember cookies for p9100_mmap() */
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sc->sc_bustag = sa->sa_bustag;
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sc->sc_ctl_btype = (bus_type_t)sa->sa_reg[0].sbr_slot;
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sc->sc_ctl_paddr = sbus_bus_addr(sa->sa_bustag,
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sa->sa_reg[0].sbr_slot, sa->sa_reg[0].sbr_offset);
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sc->sc_ctl_psize = (bus_size_t)sa->sa_reg[0].sbr_size;
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sc->sc_cmd_btype = (bus_type_t)sa->sa_reg[1].sbr_slot;
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sc->sc_cmd_paddr = sbus_bus_addr(sa->sa_bustag,
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sa->sa_reg[1].sbr_slot, sa->sa_reg[1].sbr_offset);
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sc->sc_cmd_psize = (bus_size_t)sa->sa_reg[1].sbr_size;
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sc->sc_fb_btype = (bus_type_t)sa->sa_reg[2].sbr_slot;
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sc->sc_fb_paddr = sbus_bus_addr(sa->sa_bustag,
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sa->sa_reg[2].sbr_slot, sa->sa_reg[2].sbr_offset);
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sc->sc_fb_psize = (bus_size_t)sa->sa_reg[2].sbr_size;
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fb->fb_driver = &p9100fbdriver;
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fb->fb_device = &sc->sc_dev;
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fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags & FB_USERMASK;
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fb->fb_type.fb_type = FBTYPE_SUN3COLOR;
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node = sa->sa_node;
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/*
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* When the ROM has mapped in a p9100 display, the address
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* maps only the video RAM, so in any case we have to map the
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* registers ourselves. We only need the video RAM if we are
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* going to print characters via rconsole.
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*/
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if (sbus_bus_map(sc->sc_bustag, sc->sc_ctl_btype,
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sc->sc_ctl_paddr, sc->sc_ctl_psize,
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BUS_SPACE_MAP_LINEAR, 0,
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&sc->sc_ctl_memh) != 0) {
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printf("%s: cannot map control registers\n", self->dv_xname);
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return;
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}
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if (sbus_bus_map(sc->sc_bustag, sc->sc_cmd_btype,
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sc->sc_cmd_paddr, sc->sc_cmd_psize,
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BUS_SPACE_MAP_LINEAR, 0,
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&sc->sc_cmd_memh) != 0) {
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printf("%s: cannot map command registers\n", self->dv_xname);
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return;
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}
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isconsole = fb_is_console(node);
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if (sa->sa_npromvaddrs != 0)
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fb->fb_pixels = (caddr_t)sa->sa_promvaddrs[0];
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if (isconsole && fb->fb_pixels == NULL) {
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if (sbus_bus_map(sc->sc_bustag, sc->sc_fb_btype,
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sc->sc_fb_paddr, sc->sc_fb_psize,
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BUS_SPACE_MAP_LINEAR, 0,
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&sc->sc_fb_memh) != 0) {
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printf("%s: cannot map framebuffer\n", self->dv_xname);
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return;
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}
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fb->fb_pixels = (char *)sc->sc_fb_memh;
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} else {
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sc->sc_fb_memh = (bus_space_handle_t) fb->fb_pixels;
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}
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i = p9100_ctl_read_4(sc, 0x0004);
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switch ((i >> 26) & 7) {
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case 5: fb->fb_type.fb_depth = 32; break;
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case 7: fb->fb_type.fb_depth = 24; break;
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case 3: fb->fb_type.fb_depth = 16; break;
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case 2: fb->fb_type.fb_depth = 8; break;
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default: {
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panic("pnozz: can't determine screen depth (0x%02x)", i);
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}
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}
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fb_setsize_obp(fb, fb->fb_type.fb_depth, 800, 600, node);
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sbus_establish(&sc->sc_sd, &sc->sc_dev);
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fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes;
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printf(": rev %d, %dx%d, depth %d",
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(i & 7), fb->fb_type.fb_width, fb->fb_type.fb_height,
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fb->fb_type.fb_depth);
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fb->fb_type.fb_cmsize = PROM_getpropint(node, "cmsize", 256);
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if ((1 << fb->fb_type.fb_depth) != fb->fb_type.fb_cmsize)
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printf(", %d entry colormap", fb->fb_type.fb_cmsize);
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/* Initialize the default color map. */
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bt_initcmap(&sc->sc_cmap, 256);
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p9100loadcmap(sc, 0, 256);
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/* make sure we are not blanked */
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p9100_set_video(sc, 1);
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if (shutdownhook_establish(p9100_shutdown, sc) == NULL) {
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panic("%s: could not establish shutdown hook",
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sc->sc_dev.dv_xname);
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}
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if (isconsole) {
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printf(" (console)\n");
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#ifdef RASTERCONSOLE
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for (i = 0; i < fb->fb_type.fb_size; i++) {
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if (fb->fb_pixels[i] == 0) {
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fb->fb_pixels[i] = 1;
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} else if (fb->fb_pixels[i] == (char) 255) {
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fb->fb_pixels[i] = 0;
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}
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}
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p9100loadcmap(sc, 255, 1);
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fbrcons_init(fb);
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#endif
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} else
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printf("\n");
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fb_attach(fb, isconsole);
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}
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static void
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p9100_shutdown(arg)
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void *arg;
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{
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struct p9100_softc *sc = arg;
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#ifdef RASTERCONSOLE
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struct fbdevice *fb = &sc->sc_fb;
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int i;
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for (i = 0; i < fb->fb_type.fb_size; i++) {
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if (fb->fb_pixels[i] == 1) {
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fb->fb_pixels[i] = 0;
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} else if (fb->fb_pixels[i] == 0) {
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fb->fb_pixels[i] = 255;
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}
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}
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sc->sc_cmap.cm_map[0][0] = 0xff;
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sc->sc_cmap.cm_map[0][1] = 0xff;
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sc->sc_cmap.cm_map[0][2] = 0xff;
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sc->sc_cmap.cm_map[1][0] = 0;
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sc->sc_cmap.cm_map[1][1] = 0;
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sc->sc_cmap.cm_map[1][2] = 0x80;
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p9100loadcmap(sc, 0, 2);
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sc->sc_cmap.cm_map[255][0] = 0;
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sc->sc_cmap.cm_map[255][1] = 0;
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sc->sc_cmap.cm_map[255][2] = 0;
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p9100loadcmap(sc, 255, 1);
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#endif
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p9100_set_video(sc, 1);
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}
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int
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p9100open(dev_t dev, int flags, int mode, struct proc *p)
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{
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int unit = minor(dev);
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if (unit >= pnozz_cd.cd_ndevs || pnozz_cd.cd_devs[unit] == NULL)
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return (ENXIO);
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return (0);
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}
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int
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p9100close(dev_t dev, int flags, int mode, struct proc *p)
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{
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return (0);
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}
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int
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p9100ioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p)
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{
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struct p9100_softc *sc = pnozz_cd.cd_devs[minor(dev)];
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struct fbgattr *fba;
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int error;
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switch (cmd) {
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case FBIOGTYPE:
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*(struct fbtype *)data = sc->sc_fb.fb_type;
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break;
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case FBIOGATTR:
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fba = (struct fbgattr *)data;
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fba->real_type = sc->sc_fb.fb_type.fb_type;
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fba->owner = 0; /* XXX ??? */
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fba->fbtype = sc->sc_fb.fb_type;
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fba->sattr.flags = 0;
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fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type;
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fba->sattr.dev_specific[0] = -1;
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fba->emu_types[0] = sc->sc_fb.fb_type.fb_type;
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fba->emu_types[1] = -1;
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break;
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case FBIOGETCMAP:
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#define p ((struct fbcmap *)data)
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return (bt_getcmap(p, &sc->sc_cmap, 256, 1));
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case FBIOPUTCMAP:
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/* copy to software map */
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error = bt_putcmap(p, &sc->sc_cmap, 256, 1);
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if (error)
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return (error);
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/* now blast them into the chip */
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/* XXX should use retrace interrupt */
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p9100loadcmap(sc, p->index, p->count);
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#undef p
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break;
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case FBIOGVIDEO:
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*(int *)data = p9100_get_video(sc);
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break;
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case FBIOSVIDEO:
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p9100_set_video(sc, *(int *)data);
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break;
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default:
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return (ENOTTY);
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}
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return (0);
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}
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int
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p9100poll(dev_t dev, int events, struct proc *p)
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{
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return seltrue(dev, events, p);
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}
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static uint32_t
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p9100_ctl_read_4(struct p9100_softc *sc, bus_size_t off)
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{
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sc->sc_junk = bus_space_read_4(sc->sc_bustag, sc->sc_fb_memh, off);
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return bus_space_read_4(sc->sc_bustag, sc->sc_ctl_memh, off);
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}
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static void
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p9100_ctl_write_4(struct p9100_softc *sc, bus_size_t off, uint32_t v)
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{
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sc->sc_junk = bus_space_read_4(sc->sc_bustag, sc->sc_fb_memh, off);
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bus_space_write_4(sc->sc_bustag, sc->sc_ctl_memh, off, v);
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}
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#if 0
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static uint8_t
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p9100_ramdac_read(struct p9100_softc *sc, bus_size_t off)
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{
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sc->sc_junk = p9100_ctl_read_4(sc, PWRUP_CNFG);
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return p9100_ctl_read_4(sc, off) >> 16;
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}
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#endif
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static void
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p9100_ramdac_write(struct p9100_softc *sc, bus_size_t off, uint8_t v)
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{
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sc->sc_junk = p9100_ctl_read_4(sc, PWRUP_CNFG);
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p9100_ctl_write_4(sc, off, v << 16);
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}
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/*
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* Undo the effect of an FBIOSVIDEO that turns the video off.
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*/
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static void
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p9100unblank(struct device *dev)
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{
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p9100_set_video((struct p9100_softc *)dev, 1);
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}
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static void
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p9100_set_video(struct p9100_softc *sc, int enable)
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{
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u_int32_t v = p9100_ctl_read_4(sc, SCRN_RPNT_CTL_1);
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if (enable)
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v |= VIDEO_ENABLED;
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else
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v &= ~VIDEO_ENABLED;
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p9100_ctl_write_4(sc, SCRN_RPNT_CTL_1, v);
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#if NTCTRL > 0
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/* Turn On/Off the TFT if we know how.
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*/
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tadpole_set_video(enable);
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#endif
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}
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static int
|
|
p9100_get_video(struct p9100_softc *sc)
|
|
{
|
|
return (p9100_ctl_read_4(sc, SCRN_RPNT_CTL_1) & VIDEO_ENABLED) != 0;
|
|
}
|
|
|
|
/*
|
|
* Load a subset of the current (new) colormap into the IBM RAMDAC.
|
|
*/
|
|
static void
|
|
p9100loadcmap(struct p9100_softc *sc, int start, int ncolors)
|
|
{
|
|
u_char *p;
|
|
|
|
p9100_ramdac_write(sc, DAC_CMAP_WRIDX, start);
|
|
|
|
for (p = sc->sc_cmap.cm_map[start], ncolors *= 3; ncolors-- > 0; p++) {
|
|
p9100_ramdac_write(sc, DAC_CMAP_DATA, *p);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return the address that would map the given device at the given
|
|
* offset, allowing for the given protection, or return -1 for error.
|
|
*/
|
|
paddr_t
|
|
p9100mmap(dev_t dev, off_t off, int prot)
|
|
{
|
|
struct p9100_softc *sc = pnozz_cd.cd_devs[minor(dev)];
|
|
|
|
if (off & PGOFSET)
|
|
panic("p9100mmap");
|
|
if (off < 0)
|
|
return (-1);
|
|
|
|
#define CG3_MMAP_OFFSET 0x04000000
|
|
/* Make Xsun think we are a CG3 (SUN3COLOR)
|
|
*/
|
|
if (off >= CG3_MMAP_OFFSET && off < CG3_MMAP_OFFSET + sc->sc_fb_psize) {
|
|
off -= CG3_MMAP_OFFSET;
|
|
return (bus_space_mmap(sc->sc_bustag,
|
|
sc->sc_fb_paddr,
|
|
off,
|
|
prot,
|
|
BUS_SPACE_MAP_LINEAR));
|
|
}
|
|
|
|
if (off >= sc->sc_fb_psize + sc->sc_ctl_psize + sc->sc_cmd_psize)
|
|
return (-1);
|
|
|
|
if (off < sc->sc_fb_psize) {
|
|
return (bus_space_mmap(sc->sc_bustag,
|
|
sc->sc_fb_paddr,
|
|
off,
|
|
prot,
|
|
BUS_SPACE_MAP_LINEAR));
|
|
}
|
|
off -= sc->sc_fb_psize;
|
|
if (off < sc->sc_ctl_psize) {
|
|
return (bus_space_mmap(sc->sc_bustag,
|
|
sc->sc_ctl_paddr,
|
|
off,
|
|
prot,
|
|
BUS_SPACE_MAP_LINEAR));
|
|
}
|
|
off -= sc->sc_ctl_psize;
|
|
|
|
return (bus_space_mmap(sc->sc_bustag,
|
|
sc->sc_cmd_paddr,
|
|
off,
|
|
prot,
|
|
BUS_SPACE_MAP_LINEAR));
|
|
}
|