1 /* $OpenBSD: tsp_pci.c,v 1.1 2000/11/16 04:50:18 ericj Exp $ */ 2 /* $NetBSD: tsp_pci.c,v 1.1 1999/06/29 06:46:47 ross Exp $ */ 3 4 /*- 5 * Copyright (c) 1999 by Ross Harvey. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Ross Harvey. 18 * 4. The name of Ross Harvey may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY ROSS HARVEY ``AS IS'' AND ANY EXPRESS 22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURP0SE 24 * ARE DISCLAIMED. IN NO EVENT SHALL ROSS HARVEY BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/device.h> 39 40 #include <vm/vm.h> 41 #include <uvm/uvm_extern.h> 42 43 #include <dev/pci/pcireg.h> 44 #include <dev/pci/pcivar.h> 45 46 #include <machine/autoconf.h> 47 #include <machine/rpb.h> 48 49 #include <alpha/pci/tsreg.h> 50 #include <alpha/pci/tsvar.h> 51 52 #define tsp_pci() { Generate ctags(1) key. } 53 54 void tsp_attach_hook __P((struct device *, struct device *, 55 struct pcibus_attach_args *)); 56 int tsp_bus_maxdevs __P((void *, int)); 57 pcitag_t tsp_make_tag __P((void *, int, int, int)); 58 void tsp_decompose_tag __P((void *, pcitag_t, int *, int *, 59 int *)); 60 pcireg_t tsp_conf_read __P((void *, pcitag_t, int)); 61 void tsp_conf_write __P((void *, pcitag_t, int, pcireg_t)); 62 63 void 64 tsp_pci_init(pc, v) 65 pci_chipset_tag_t pc; 66 void *v; 67 { 68 pc->pc_conf_v = v; 69 pc->pc_attach_hook = tsp_attach_hook; 70 pc->pc_bus_maxdevs = tsp_bus_maxdevs; 71 pc->pc_make_tag = tsp_make_tag; 72 pc->pc_decompose_tag = tsp_decompose_tag; 73 pc->pc_conf_read = tsp_conf_read; 74 pc->pc_conf_write = tsp_conf_write; 75 } 76 77 void 78 tsp_attach_hook(parent, self, pba) 79 struct device *parent, *self; 80 struct pcibus_attach_args *pba; 81 { 82 } 83 84 int 85 tsp_bus_maxdevs(cpv, busno) 86 void *cpv; 87 int busno; 88 { 89 return 32; 90 } 91 92 pcitag_t 93 tsp_make_tag(cpv, b, d, f) 94 void *cpv; 95 int b, d, f; 96 { 97 return b << 16 | d << 11 | f << 8; 98 } 99 100 void 101 tsp_decompose_tag(cpv, tag, bp, dp, fp) 102 void *cpv; 103 pcitag_t tag; 104 int *bp, *dp, *fp; 105 { 106 if (bp != NULL) 107 *bp = (tag >> 16) & 0xff; 108 if (dp != NULL) 109 *dp = (tag >> 11) & 0x1f; 110 if (fp != NULL) 111 *fp = (tag >> 8) & 0x7; 112 } 113 /* 114 * Tsunami makes this a lot easier than it used to be, automatically 115 * generating type 0 or type 1 cycles, and quietly returning -1 with 116 * no errors on unanswered probes. 117 */ 118 pcireg_t 119 tsp_conf_read(cpv, tag, offset) 120 void *cpv; 121 pcitag_t tag; 122 int offset; 123 { 124 pcireg_t *datap, data; 125 struct tsp_config *pcp = cpv; 126 127 datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3)); 128 alpha_mb(); 129 data = *datap; 130 alpha_mb(); 131 return data; 132 } 133 134 void 135 tsp_conf_write(cpv, tag, offset, data) 136 void *cpv; 137 pcitag_t tag; 138 int offset; 139 pcireg_t data; 140 { 141 pcireg_t *datap; 142 struct tsp_config *pcp = cpv; 143 144 datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3)); 145 alpha_mb(); 146 *datap = data; 147 alpha_mb(); 148 } 149