1 /* $NetBSD: pci_machdep.c,v 1.3 2013/01/12 08:40:51 kiyohara Exp $ */ 2 /* 3 * Copyright (c) 2009, 2010 KIYOHARA Takashi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 #include <sys/cdefs.h> 28 __KERNEL_RCSID(0, "$NetBSD: pci_machdep.c,v 1.3 2013/01/12 08:40:51 kiyohara Exp $"); 29 30 #include <machine/bus.h> 31 #include <machine/sal.h> 32 33 #include <dev/pci/pcivar.h> 34 #include <dev/pci/pcireg.h> 35 #include <dev/pci/pcidevs.h> 36 37 38 void 39 pci_attach_hook(device_t parent, device_t self, struct pcibus_attach_args *pba) 40 { 41 42 /* Nothing */ 43 } 44 45 int 46 pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 47 { 48 49 return 32; /* 32 device/bus */ 50 } 51 52 pcitag_t 53 pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) 54 { 55 56 #if DIAGNOSTIC 57 if (bus >= 256 || device >= 32 || function >= 8) 58 panic("%s: bad request", __func__); 59 #endif 60 61 return (bus << 16) | (device << 11) | (function << 8); 62 } 63 64 void 65 pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, int *fp) 66 { 67 68 if (bp != NULL) 69 *bp = (tag >> 16) & 0xff; 70 if (dp != NULL) 71 *dp = (tag >> 11) & 0x1f; 72 if (fp != NULL) 73 *fp = (tag >> 8) & 0x07; 74 } 75 76 pcireg_t 77 pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 78 { 79 struct ia64_sal_result res; 80 81 res = ia64_sal_entry(SAL_PCI_CONFIG_READ, 82 tag | reg, sizeof(pcireg_t), 0, 0, 0, 0, 0); 83 if (res.sal_status < 0) 84 return -1; 85 else 86 return res.sal_result[0]; 87 } 88 89 void 90 pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t val) 91 { 92 struct ia64_sal_result res; 93 94 res = ia64_sal_entry(SAL_PCI_CONFIG_WRITE, 95 tag | reg, sizeof(pcireg_t), val, 0, 0, 0, 0); 96 if (res.sal_status < 0) 97 printf("pci configuration write failed\n"); 98 } 99