/* $NetBSD: leo.c,v 1.22 2017/02/01 14:33:10 christos Exp $ */ /*- * Copyright (c) 1997 maximum entropy * Copyright (c) 1997 The NetBSD Foundation, Inc. * 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 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 FOUNDATION 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. */ /* * Driver for the Circad Leonardo 1.2 from Lexicor, a 24-bit true color * VME graphics card based on the Texas Instruments TMS34061. * * Written by maximum entropy , December 5, 1997. * * This driver was written from scratch, but I referred to several other * drivers in the NetBSD distribution as examples. The file I referred to * the most was /sys/arch/atari/vme/if_le_vme.c. Due credits: * Copyright (c) 1997 Leo Weppelman. All rights reserved. * Copyright (c) 1995 Charles M. Hannum. All rights reserved. * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * This code is derived from software contributed to Berkeley by * Ralph Campbell and Rick Macklem. * This product includes software developed by the University of * California, Berkeley and its contributors. */ #include __KERNEL_RCSID(0, "$NetBSD: leo.c,v 1.22 2017/02/01 14:33:10 christos Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ioconf.h" static struct leo_addresses { u_long reg_addr; u_int reg_size; u_long mem_addr; u_int mem_size; } leostd[] = { { 0xfed90000, 0x100, 0xfec00000, 0x100000 } }; #define NLEOSTD (sizeof(leostd) / sizeof(leostd[0])) struct leo_softc { device_t sc_dev; /* XXX what goes here? */ bus_space_tag_t sc_iot; bus_space_tag_t sc_memt; bus_space_handle_t sc_ioh; bus_space_handle_t sc_memh; int sc_flags; int sc_maddr; u_int sc_msize; }; #define LEO_SC_FLAGS_INUSE 1 static int leo_match(device_t, cfdata_t, void *); static void leo_attach(device_t, device_t, void *); static int leo_probe(bus_space_tag_t *, bus_space_tag_t *, bus_space_handle_t *, bus_space_handle_t *, u_int, u_int); static int leo_init(struct leo_softc *, int); static int leo_scroll(struct leo_softc *, int); CFATTACH_DECL_NEW(leo, sizeof(struct leo_softc), leo_match, leo_attach, NULL, NULL); dev_type_open(leoopen); dev_type_close(leoclose); dev_type_read(leomove); dev_type_ioctl(leoioctl); dev_type_mmap(leommap); const struct cdevsw leo_cdevsw = { .d_open = leoopen, .d_close = leoclose, .d_read = leomove, .d_write = leomove, .d_ioctl = leoioctl, .d_stop = nostop, .d_tty = notty, .d_poll = nopoll, .d_mmap = leommap, .d_kqfilter = nokqfilter, .d_discard = nodiscard, .d_flag = 0 }; static int leo_match(device_t parent, cfdata_t cf, void *aux) { struct vme_attach_args *va = aux; int i; bus_space_tag_t iot; bus_space_tag_t memt; bus_space_handle_t ioh; bus_space_handle_t memh; /* * We are passed our configuration in the attachment arguments. * The configuration information may be partially unspecified. * For any unspecified configuration parameters, we fill in those * parameters with data for a "standard" configuration. * Once we have a fully specified configuration, we try to probe * a card with that configuration. * The Leonardo only has one configuration and it isn't likely * to change, but this routine doesn't assume that's the case. */ iot = va->va_iot; memt = va->va_memt; for (i = 0; i < NLEOSTD; i++) { struct leo_addresses *leo_ap = &leostd[i]; int found = 0; struct vme_attach_args vat = *va; if (vat.va_irq != VMECF_IRQ_DEFAULT) { printf("leo_match: config error: no irq support\n"); return 0; } if (vat.va_iobase == VMECF_IOPORT_DEFAULT) vat.va_iobase = leo_ap->reg_addr; if (vat.va_maddr == VMECF_MEM_DEFAULT) vat.va_maddr = leo_ap->mem_addr; if (vat.va_iosize == VMECF_IOSIZE_DEFAULT) vat.va_iosize = leo_ap->reg_size; if (vat.va_msize == VMECF_MEMSIZ_DEFAULT) vat.va_msize = leo_ap->mem_size; if (bus_space_map(iot, vat.va_iobase, vat.va_iosize, 0, &ioh)) { printf("leo_match: cannot map io area\n"); return 0; } if (bus_space_map(memt, vat.va_maddr, vat.va_msize, BUS_SPACE_MAP_LINEAR|BUS_SPACE_MAP_CACHEABLE, &memh)) { bus_space_unmap(iot, ioh, vat.va_iosize); printf("leo_match: cannot map memory area\n"); return 0; } found = leo_probe(&iot, &memt, &ioh, &memh, vat.va_iosize, vat.va_msize); bus_space_unmap(iot, ioh, vat.va_iosize); bus_space_unmap(memt, memh, vat.va_msize); if (found) { *va = vat; return 1; } } return 0; } static int leo_probe(bus_space_tag_t *iot, bus_space_tag_t *memt, bus_space_handle_t *ioh, bus_space_handle_t *memh, u_int iosize, u_int msize) { /* Test that our highest register is within the io range. */ if (0xca > iosize) /* XXX */ return 0; /* Test if we can peek each register. */ if (!bus_space_peek_1(*iot, *ioh, LEO_REG_MSBSCROLL)) return 0; if (!bus_space_peek_1(*iot, *ioh, LEO_REG_LSBSCROLL)) return 0; /* * Write a test pattern at the start and end of the memory region, * and test if the pattern can be read back. If so, the region is * backed by memory (i.e. the card is present). * On the Leonardo, the first byte of each longword isn't backed by * physical memory, so we only compare the three low-order bytes * with the test pattern. */ bus_space_write_4(*memt, *memh, 0, 0xa5a5a5a5); if ((bus_space_read_4(*memt, *memh, 0) & 0xffffff) != 0xa5a5a5) return 0; bus_space_write_4(*memt, *memh, msize - 4, 0xa5a5a5a5); if ((bus_space_read_4(*memt, *memh, msize - 4) & 0xffffff) != 0xa5a5a5) return 0; return 1; } static void leo_attach(device_t parent, device_t self, void *aux) { struct leo_softc *sc = device_private(self); struct vme_attach_args *va = aux; bus_space_handle_t ioh; bus_space_handle_t memh; #ifndef SET_REGION int i; #endif sc->sc_dev = self; printf("\n"); if (bus_space_map(va->va_iot, va->va_iobase, va->va_iosize, 0, &ioh)) panic("leo_attach: cannot map io area"); if (bus_space_map(va->va_memt, va->va_maddr, va->va_msize, BUS_SPACE_MAP_LINEAR|BUS_SPACE_MAP_CACHEABLE, &memh)) panic("leo_attach: cannot map memory area"); #ifdef SET_REGION /* XXX seems to be unimplemented on atari? */ bus_space_set_region_4(va->va_memt, memh, 0, 0, va->va_msize >> 2); #else for (i = 0; i < (va->va_msize >> 2); i++) bus_space_write_4(va->va_memt, memh, i << 2, 0); #endif sc->sc_iot = va->va_iot; sc->sc_ioh = ioh; sc->sc_memt = va->va_memt; sc->sc_memh = memh; sc->sc_flags = 0; sc->sc_maddr = va->va_maddr; sc->sc_msize = va->va_msize; leo_init(sc, 512); leo_scroll(sc, 0); } int leoopen(dev_t dev, int flags, int devtype, struct lwp *l) { struct leo_softc *sc; int r; sc = device_lookup_private(&leo_cd, minor(dev)); if (!sc) return ENXIO; if (sc->sc_flags & LEO_SC_FLAGS_INUSE) return EBUSY; r = leo_init(sc, 512); if (r != 0) return r; r = leo_scroll(sc, 0); if (r != 0) return r; sc->sc_flags |= LEO_SC_FLAGS_INUSE; return 0; } static int leo_init(struct leo_softc *sc, int ysize) { if ((ysize != 256) && (ysize != 384) && (ysize != 512)) return EINVAL; /* XXX */ bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x00, 0x6); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x08, 0x0); if (ysize == 384) bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x10, 0x10); else bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x10, 0x11); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x18, 0x0); if (ysize == 384) bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x20, 0x50); else bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x20, 0x51); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x28, 0x0); if (ysize == 384) bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x30, 0x56); else bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x30, 0x57); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x38, 0x0); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x40, 0x6); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x48, 0x0); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x50, 0x25); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x58, 0x0); if (ysize == 256) { bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x60, 0x1f); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x68, 0x1); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x70, 0x29); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x78, 0x1); } else if (ysize == 384) { bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x60, 0xa5); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x68, 0x1); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x70, 0xa7); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x78, 0x1); } else { bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x60, 0x1d); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x68, 0x2); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x70, 0x27); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x78, 0x2); } bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0xb8, 0x10); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0xb0, 0x10); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0x80, 0x4); if (ysize == 384) bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0xc8, 0x21); else bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0xc8, 0x20); bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0xc0, 0x40); return 0; } static int leo_scroll(struct leo_softc *sc, int scroll) { if ((scroll < 0) || (scroll > 255)) return EINVAL; bus_space_write_1(sc->sc_iot, sc->sc_ioh, LEO_REG_MSBSCROLL, (scroll >> 6) & 0xff); bus_space_write_1(sc->sc_iot, sc->sc_ioh, LEO_REG_LSBSCROLL, (scroll << 2) & 0xff); return 0; } int leoclose(dev_t dev, int flags, int devtype, struct lwp *l) { struct leo_softc *sc; sc = device_lookup_private(&leo_cd, minor(dev)); sc->sc_flags &= ~LEO_SC_FLAGS_INUSE; return 0; } #define SMALLBSIZE 32 int leomove(dev_t dev, struct uio *uio, int flags) { struct leo_softc *sc; int length, size, error; u_int8_t smallbuf[SMALLBSIZE]; off_t offset; sc = device_lookup_private(&leo_cd,minor(dev)); if (uio->uio_offset > sc->sc_msize) return 0; length = sc->sc_msize - uio->uio_offset; if (length > uio->uio_resid) length = uio->uio_resid; while (length > 0) { size = length; if (size > SMALLBSIZE) size = SMALLBSIZE; length -= size; offset = uio->uio_offset; if (uio->uio_rw == UIO_READ) bus_space_read_region_1(sc->sc_memt, sc->sc_memh, offset, smallbuf, size); if ((error = uiomove((void *)smallbuf, size, uio))) return (error); if (uio->uio_rw == UIO_WRITE) bus_space_write_region_1(sc->sc_memt, sc->sc_memh, offset, smallbuf, size); } return 0; } int leoioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) { struct leo_softc *sc; sc = device_lookup_private(&leo_cd,minor(dev)); switch (cmd) { case LIOCYRES: return leo_init(sc, *(int *)data); break; case LIOCSCRL: return leo_scroll(sc, *(int *)data); break; default: return EINVAL; break; } } paddr_t leommap(dev_t dev, off_t offset, int prot) { struct leo_softc *sc; sc = device_lookup_private(&leo_cd, minor(dev)); if (offset >= 0 && offset < sc->sc_msize) return m68k_btop(sc->sc_maddr + offset); return -1; }