Annotation of sys/arch/sparc/dev/lebuffer.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: lebuffer.c,v 1.6 2006/06/02 20:00:54 miod Exp $ */
! 2: /* $NetBSD: lebuffer.c,v 1.3 1997/05/24 20:16:28 pk Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1996 Paul Kranenburg. All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed by Peter Galbavy.
! 18: * 4. The name of the author may not be used to endorse or promote products
! 19: * derived from this software without specific prior written permission.
! 20: *
! 21: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 22: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 23: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 24: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 25: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 26: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 27: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 28: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 29: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 30: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 31: */
! 32:
! 33: #include <sys/types.h>
! 34: #include <sys/param.h>
! 35: #include <sys/systm.h>
! 36: #include <sys/kernel.h>
! 37: #include <sys/errno.h>
! 38: #include <sys/ioctl.h>
! 39: #include <sys/device.h>
! 40: #include <sys/malloc.h>
! 41: #include <sys/buf.h>
! 42: #include <sys/proc.h>
! 43: #include <sys/user.h>
! 44:
! 45: #include <sparc/autoconf.h>
! 46: #include <sparc/cpu.h>
! 47:
! 48: #include <sparc/dev/sbusvar.h>
! 49: #include <sparc/dev/lebuffervar.h>
! 50: #include <sparc/dev/dmareg.h>/*XXX*/
! 51:
! 52: int lebufprint(void *, const char *);
! 53: int lebufmatch(struct device *, void *, void *);
! 54: void lebufattach(struct device *, struct device *, void *);
! 55:
! 56: struct cfattach lebuffer_ca = {
! 57: sizeof(struct lebuf_softc), lebufmatch, lebufattach
! 58: };
! 59:
! 60: struct cfdriver lebuffer_cd = {
! 61: NULL, "lebuffer", DV_DULL
! 62: };
! 63:
! 64: int
! 65: lebufprint(aux, name)
! 66: void *aux;
! 67: const char *name;
! 68: {
! 69: register struct confargs *ca = aux;
! 70:
! 71: if (name)
! 72: printf("[%s at %s]", ca->ca_ra.ra_name, name);
! 73: printf(" offset 0x%x", ca->ca_offset);
! 74: return (UNCONF);
! 75: }
! 76:
! 77: /*
! 78: * Match a lebuffer card in a slot capable of dma.
! 79: */
! 80: int
! 81: lebufmatch(parent, vcf, aux)
! 82: struct device *parent;
! 83: void *vcf, *aux;
! 84: {
! 85: struct cfdata *cf = vcf;
! 86: struct confargs *ca = aux;
! 87: register struct romaux *ra = &ca->ca_ra;
! 88:
! 89: if (strcmp(cf->cf_driver->cd_name, ra->ra_name))
! 90: return(0);
! 91:
! 92: if (!sbus_testdma((struct sbus_softc *)parent, ca))
! 93: return(0);
! 94:
! 95: return (1);
! 96: }
! 97:
! 98: /*
! 99: * Attach all the sub-devices we can find
! 100: */
! 101: void
! 102: lebufattach(parent, self, aux)
! 103: struct device *parent, *self;
! 104: void *aux;
! 105: {
! 106: #if defined(SUN4C) || defined(SUN4M)
! 107: register struct confargs *ca = aux;
! 108: struct lebuf_softc *sc = (void *)self;
! 109: int node;
! 110: struct confargs oca;
! 111: char *name;
! 112: int sbusburst;
! 113:
! 114: if (ca->ca_ra.ra_vaddr == NULL || ca->ca_ra.ra_nvaddrs == 0)
! 115: ca->ca_ra.ra_vaddr =
! 116: mapiodev(ca->ca_ra.ra_reg, 0, ca->ca_ra.ra_len);
! 117:
! 118: /*
! 119: * This device's "register space" is just a buffer where the
! 120: * Lance ring-buffers can be stored. Note the buffer's location
! 121: * and size, so the `le' driver can pick them up.
! 122: */
! 123: sc->sc_buffer = (caddr_t)ca->ca_ra.ra_vaddr;
! 124: sc->sc_bufsiz = ca->ca_ra.ra_len;
! 125:
! 126: /*
! 127: * Get transfer burst size from PROM
! 128: */
! 129: sbusburst = ((struct sbus_softc *)parent)->sc_burst;
! 130: if (sbusburst == 0)
! 131: sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
! 132:
! 133: sc->sc_burst = getpropint(ca->ca_ra.ra_node, "burst-sizes", -1);
! 134: if (sc->sc_burst == -1)
! 135: /* take SBus burst sizes */
! 136: sc->sc_burst = sbusburst;
! 137:
! 138: /* Clamp at parent's burst sizes */
! 139: sc->sc_burst &= sbusburst;
! 140:
! 141: printf(": %dK memory\n", sc->sc_bufsiz / 1024);
! 142:
! 143: node = sc->sc_node = ca->ca_ra.ra_node;
! 144:
! 145: /* Propagate bootpath */
! 146: if (ca->ca_ra.ra_bp != NULL)
! 147: oca.ca_ra.ra_bp = ca->ca_ra.ra_bp + 1;
! 148: else
! 149: oca.ca_ra.ra_bp = NULL;
! 150:
! 151: /* search through children */
! 152: for (node = firstchild(node); node; node = nextsibling(node)) {
! 153: name = getpropstring(node, "name");
! 154: if (!romprop(&oca.ca_ra, name, node))
! 155: continue;
! 156:
! 157: sbus_translate(parent, &oca);
! 158: oca.ca_bustype = BUS_SBUS;
! 159: (void) config_found(&sc->sc_dev, (void *)&oca, lebufprint);
! 160: }
! 161: #endif /* SUN4C || SUN4M */
! 162: }
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