1 /* $OpenBSD: tsp_pci.c,v 1.3 2002/03/14 01:26:27 millert 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 <uvm/uvm_extern.h> 41 42 #include <dev/pci/pcireg.h> 43 #include <dev/pci/pcivar.h> 44 45 #include <machine/autoconf.h> 46 #include <machine/rpb.h> 47 48 #include <alpha/pci/tsreg.h> 49 #include <alpha/pci/tsvar.h> 50 51 #define tsp_pci() { Generate ctags(1) key. } 52 53 void tsp_attach_hook(struct device *, struct device *, 54 struct pcibus_attach_args *); 55 int tsp_bus_maxdevs(void *, int); 56 pcitag_t tsp_make_tag(void *, int, int, int); 57 void tsp_decompose_tag(void *, pcitag_t, int *, int *, 58 int *); 59 pcireg_t tsp_conf_read(void *, pcitag_t, int); 60 void tsp_conf_write(void *, pcitag_t, int, pcireg_t); 61 62 void 63 tsp_pci_init(pc, v) 64 pci_chipset_tag_t pc; 65 void *v; 66 { 67 pc->pc_conf_v = v; 68 pc->pc_attach_hook = tsp_attach_hook; 69 pc->pc_bus_maxdevs = tsp_bus_maxdevs; 70 pc->pc_make_tag = tsp_make_tag; 71 pc->pc_decompose_tag = tsp_decompose_tag; 72 pc->pc_conf_read = tsp_conf_read; 73 pc->pc_conf_write = tsp_conf_write; 74 } 75 76 void 77 tsp_attach_hook(parent, self, pba) 78 struct device *parent, *self; 79 struct pcibus_attach_args *pba; 80 { 81 } 82 83 int 84 tsp_bus_maxdevs(cpv, busno) 85 void *cpv; 86 int busno; 87 { 88 return 32; 89 } 90 91 pcitag_t 92 tsp_make_tag(cpv, b, d, f) 93 void *cpv; 94 int b, d, f; 95 { 96 return b << 16 | d << 11 | f << 8; 97 } 98 99 void 100 tsp_decompose_tag(cpv, tag, bp, dp, fp) 101 void *cpv; 102 pcitag_t tag; 103 int *bp, *dp, *fp; 104 { 105 if (bp != NULL) 106 *bp = (tag >> 16) & 0xff; 107 if (dp != NULL) 108 *dp = (tag >> 11) & 0x1f; 109 if (fp != NULL) 110 *fp = (tag >> 8) & 0x7; 111 } 112 /* 113 * Tsunami makes this a lot easier than it used to be, automatically 114 * generating type 0 or type 1 cycles, and quietly returning -1 with 115 * no errors on unanswered probes. 116 */ 117 pcireg_t 118 tsp_conf_read(cpv, tag, offset) 119 void *cpv; 120 pcitag_t tag; 121 int offset; 122 { 123 pcireg_t *datap, data; 124 struct tsp_config *pcp = cpv; 125 126 datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3)); 127 alpha_mb(); 128 data = *datap; 129 alpha_mb(); 130 return data; 131 } 132 133 void 134 tsp_conf_write(cpv, tag, offset, data) 135 void *cpv; 136 pcitag_t tag; 137 int offset; 138 pcireg_t data; 139 { 140 pcireg_t *datap; 141 struct tsp_config *pcp = cpv; 142 143 datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3)); 144 alpha_mb(); 145 *datap = data; 146 alpha_mb(); 147 } 148