Annotation of sys/dev/pci/cy82c693.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: cy82c693.c,v 1.5 2004/06/13 21:49:25 niklas Exp $ */
! 2: /* $NetBSD: cy82c693.c,v 1.1 2000/06/06 03:07:39 thorpej Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 2000 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: /*
! 41: * Common routines to read/write control registers on the Cypress 82c693
! 42: * hyperCache(tm) Stand-Alone PCI Peripheral Controller with USB.
! 43: */
! 44:
! 45: #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
! 46:
! 47: #include <sys/param.h>
! 48: #include <sys/device.h>
! 49: #include <sys/systm.h>
! 50: #include <sys/lock.h>
! 51:
! 52: #include <machine/bus.h>
! 53:
! 54: #include <dev/pci/pcireg.h>
! 55: #include <dev/pci/pcivar.h>
! 56:
! 57: #include <dev/pci/cy82c693reg.h>
! 58: #include <dev/pci/cy82c693var.h>
! 59:
! 60: static struct cy82c693_handle cyhc_handle;
! 61: static int cyhc_initialized;
! 62:
! 63: struct simplelock cyhc_slock;
! 64:
! 65: #define CYHC_LOCK(s) \
! 66: do { \
! 67: s = splhigh(); \
! 68: simple_lock(&cyhc_slock); \
! 69: } while (0)
! 70:
! 71: #define CYHC_UNLOCK(s) \
! 72: do { \
! 73: simple_unlock(&cyhc_slock); \
! 74: splx(s); \
! 75: } while (0)
! 76:
! 77: const struct cy82c693_handle *
! 78: cy82c693_init(bus_space_tag_t iot)
! 79: {
! 80: bus_space_handle_t ioh;
! 81: int s;
! 82: int error;
! 83:
! 84: simple_lock_init(&cyhc_slock);
! 85:
! 86: CYHC_LOCK(s);
! 87:
! 88: if (cyhc_initialized) {
! 89: CYHC_UNLOCK(s);
! 90: if (iot != cyhc_handle.cyhc_iot)
! 91: panic("cy82c693_init");
! 92: return (&cyhc_handle);
! 93: }
! 94:
! 95: if ((error = bus_space_map(iot, CYHC_CONFIG_ADDR, 2, 0, &ioh)) != 0) {
! 96: CYHC_UNLOCK(s);
! 97: printf("cy82c693_init: bus_space_map failed (%d)", error);
! 98: return (NULL);
! 99: }
! 100:
! 101: cyhc_handle.cyhc_iot = iot;
! 102: cyhc_handle.cyhc_ioh = ioh;
! 103:
! 104: cyhc_initialized = 1;
! 105:
! 106: CYHC_UNLOCK(s);
! 107:
! 108: return (&cyhc_handle);
! 109: }
! 110:
! 111: u_int8_t
! 112: cy82c693_read(const struct cy82c693_handle *cyhc, int reg)
! 113: {
! 114: int s;
! 115: u_int8_t rv;
! 116:
! 117: CYHC_LOCK(s);
! 118:
! 119: if (cyhc_initialized == 0) {
! 120: CYHC_UNLOCK(s);
! 121: panic("cy82c693_read");
! 122: }
! 123:
! 124: bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 0, reg);
! 125: rv = bus_space_read_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 1);
! 126:
! 127: CYHC_UNLOCK(s);
! 128:
! 129: return (rv);
! 130: }
! 131:
! 132: void
! 133: cy82c693_write(const struct cy82c693_handle *cyhc, int reg, u_int8_t val)
! 134: {
! 135: int s;
! 136:
! 137: CYHC_LOCK(s);
! 138:
! 139: if (cyhc_initialized == 0) {
! 140: CYHC_UNLOCK(s);
! 141: panic("cy82c693_write");
! 142: }
! 143:
! 144: bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 0, reg);
! 145: bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 1, val);
! 146:
! 147: CYHC_UNLOCK(s);
! 148: }
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