1 /* $NetBSD: cy82c693.c,v 1.3 2001/11/13 07:35:02 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Common routines to read/write control registers on the Cypress 82c693 41 * hyperCache(tm) Stand-Alone PCI Peripheral Controller with USB. 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: cy82c693.c,v 1.3 2001/11/13 07:35:02 lukem Exp $"); 46 47 #include "opt_multiprocessor.h" 48 #include "opt_lockdebug.h" 49 50 #include <sys/param.h> 51 #include <sys/device.h> 52 #include <sys/systm.h> 53 #include <sys/lock.h> 54 55 #include <machine/bus.h> 56 57 #include <dev/pci/pcireg.h> 58 #include <dev/pci/pcivar.h> 59 60 #include <dev/pci/cy82c693reg.h> 61 #include <dev/pci/cy82c693var.h> 62 63 static struct cy82c693_handle cyhc_handle; 64 static int cyhc_initialized; 65 66 static struct simplelock cyhc_slock = SIMPLELOCK_INITIALIZER; 67 68 #define CYHC_LOCK(s) \ 69 do { \ 70 s = splhigh(); \ 71 simple_lock(&cyhc_slock); \ 72 } while (0) 73 74 #define CYHC_UNLOCK(s) \ 75 do { \ 76 simple_unlock(&cyhc_slock); \ 77 splx(s); \ 78 } while (0) 79 80 const struct cy82c693_handle * 81 cy82c693_init(bus_space_tag_t iot) 82 { 83 bus_space_handle_t ioh; 84 int s; 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 (bus_space_map(iot, CYHC_CONFIG_ADDR, 2, 0, &ioh) != 0) { 96 CYHC_UNLOCK(s); 97 return (NULL); 98 } 99 100 cyhc_handle.cyhc_iot = iot; 101 cyhc_handle.cyhc_ioh = ioh; 102 103 cyhc_initialized = 1; 104 105 CYHC_UNLOCK(s); 106 107 return (&cyhc_handle); 108 } 109 110 u_int8_t 111 cy82c693_read(const struct cy82c693_handle *cyhc, int reg) 112 { 113 int s; 114 u_int8_t rv; 115 116 CYHC_LOCK(s); 117 118 if (cyhc_initialized == 0) { 119 CYHC_UNLOCK(s); 120 panic("cy82c693_read"); 121 } 122 123 bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 0, reg); 124 rv = bus_space_read_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 1); 125 126 CYHC_UNLOCK(s); 127 128 return (rv); 129 } 130 131 void 132 cy82c693_write(const struct cy82c693_handle *cyhc, int reg, u_int8_t val) 133 { 134 int s; 135 136 CYHC_LOCK(s); 137 138 if (cyhc_initialized == 0) { 139 CYHC_UNLOCK(s); 140 panic("cy82c693_write"); 141 } 142 143 bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 0, reg); 144 bus_space_write_1(cyhc->cyhc_iot, cyhc->cyhc_ioh, 1, val); 145 146 CYHC_UNLOCK(s); 147 } 148