pci_cfgreg.c revision 84124
1/*- 2 * Copyright (c) 2001 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/ia64/pci/pci_cfgreg.c 84124 2001-09-29 11:11:18Z dfr $ 27 */ 28 29#include <sys/param.h> 30#include <machine/pci_cfgreg.h> 31#include <machine/sal.h> 32 33#define SAL_PCI_ADDRESS(bus, slot, func, reg) \ 34 (((bus) << 23) | ((slot) << 11) | ((func) << 8) | (reg)) 35 36int 37pci_cfgregopen(void) 38{ 39 return 1; 40} 41 42u_int32_t 43pci_cfgregread(int bus, int slot, int func, int reg, int bytes) 44{ 45 struct ia64_sal_result res; 46 47 res = ia64_sal_entry(SAL_PCI_CONFIG_READ, 48 SAL_PCI_ADDRESS(bus, slot, func, reg), 49 bytes, 0, 0, 0, 0, 0); 50 if (res.sal_status < 0) 51 return (~0); 52 else 53 return (res.sal_result[0]); 54 55 56} 57void 58pci_cfgregwrite(int bus, int slot, int func, int reg, u_int32_t data, int bytes) 59{ 60 struct ia64_sal_result res; 61 62 res = ia64_sal_entry(SAL_PCI_CONFIG_WRITE, 63 SAL_PCI_ADDRESS(bus, slot, func, reg), 64 bytes, data, 0, 0, 0, 0); 65} 66