1 /* $OpenBSD: cy82c693.c,v 1.4 2001/02/26 16:21:46 art 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 = SLOCK_INITIALIZER; 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 CYHC_LOCK(s); 85 86 if (cyhc_initialized) { 87 CYHC_UNLOCK(s); 88 if (iot != cyhc_handle.cyhc_iot) 89 panic("cy82c693_init"); 90 return (&cyhc_handle); 91 } 92 93 if ((error = bus_space_map(iot, CYHC_CONFIG_ADDR, 2, 0, &ioh)) != 0) { 94 CYHC_UNLOCK(s); 95 printf("cy82c693_init: bus_space_map failed (%d)", error); 96 return (NULL); 97 } 98 99 cyhc_handle.cyhc_iot = iot; 100 cyhc_handle.cyhc_ioh = ioh; 101 102 cyhc_initialized = 1; 103 104 CYHC_UNLOCK(s); 105 106 return (&cyhc_handle); 107 } 108 109 u_int8_t 110 cy82c693_read(const struct cy82c693_handle *cyhc, int reg) 111 { 112 int s; 113 u_int8_t rv; 114 115 CYHC_LOCK(s); 116 117 if (cyhc_initialized == 0) { 118 CYHC_UNLOCK(s); 119 panic("cy82c693_read"); 120 } 121 122 bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 0, reg); 123 rv = bus_space_read_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 1); 124 125 CYHC_UNLOCK(s); 126 127 return (rv); 128 } 129 130 void 131 cy82c693_write(const struct cy82c693_handle *cyhc, int reg, u_int8_t val) 132 { 133 int s; 134 135 CYHC_LOCK(s); 136 137 if (cyhc_initialized == 0) { 138 CYHC_UNLOCK(s); 139 panic("cy82c693_write"); 140 } 141 142 bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 0, reg); 143 bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 1, val); 144 145 CYHC_UNLOCK(s); 146 } 147