1 /* $NetBSD: tsp_pci.c,v 1.3 2001/02/27 19:07:53 cgd Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 by Ross Harvey. 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 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Ross Harvey. 17 * 4. The name of Ross Harvey may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY ROSS HARVEY ``AS IS'' AND ANY EXPRESS 21 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURP0SE 23 * ARE DISCLAIMED. IN NO EVENT SHALL ROSS HARVEY BE LIABLE FOR ANY 24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/cdefs.h> 35 36 __KERNEL_RCSID(0, "$NetBSD: tsp_pci.c,v 1.3 2001/02/27 19:07:53 cgd Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/device.h> 42 43 #include <uvm/uvm_extern.h> 44 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcivar.h> 47 48 #include <machine/autoconf.h> 49 #include <machine/rpb.h> 50 51 #include <alpha/pci/tsreg.h> 52 #include <alpha/pci/tsvar.h> 53 54 #define tsp_pci() { Generate ctags(1) key. } 55 56 void tsp_attach_hook __P((struct device *, struct device *, 57 struct pcibus_attach_args *)); 58 int tsp_bus_maxdevs __P((void *, int)); 59 pcitag_t tsp_make_tag __P((void *, int, int, int)); 60 void tsp_decompose_tag __P((void *, pcitag_t, int *, int *, 61 int *)); 62 pcireg_t tsp_conf_read __P((void *, pcitag_t, int)); 63 void tsp_conf_write __P((void *, pcitag_t, int, pcireg_t)); 64 65 void 66 tsp_pci_init(pc, v) 67 pci_chipset_tag_t pc; 68 void *v; 69 { 70 pc->pc_conf_v = v; 71 pc->pc_attach_hook = tsp_attach_hook; 72 pc->pc_bus_maxdevs = tsp_bus_maxdevs; 73 pc->pc_make_tag = tsp_make_tag; 74 pc->pc_decompose_tag = tsp_decompose_tag; 75 pc->pc_conf_read = tsp_conf_read; 76 pc->pc_conf_write = tsp_conf_write; 77 } 78 79 void 80 tsp_attach_hook(parent, self, pba) 81 struct device *parent, *self; 82 struct pcibus_attach_args *pba; 83 { 84 } 85 86 int 87 tsp_bus_maxdevs(cpv, busno) 88 void *cpv; 89 int busno; 90 { 91 return 32; 92 } 93 94 pcitag_t 95 tsp_make_tag(cpv, b, d, f) 96 void *cpv; 97 int b, d, f; 98 { 99 return b << 16 | d << 11 | f << 8; 100 } 101 102 void 103 tsp_decompose_tag(cpv, tag, bp, dp, fp) 104 void *cpv; 105 pcitag_t tag; 106 int *bp, *dp, *fp; 107 { 108 if (bp != NULL) 109 *bp = (tag >> 16) & 0xff; 110 if (dp != NULL) 111 *dp = (tag >> 11) & 0x1f; 112 if (fp != NULL) 113 *fp = (tag >> 8) & 0x7; 114 } 115 /* 116 * Tsunami makes this a lot easier than it used to be, automatically 117 * generating type 0 or type 1 cycles, and quietly returning -1 with 118 * no errors on unanswered probes. 119 */ 120 pcireg_t 121 tsp_conf_read(cpv, tag, offset) 122 void *cpv; 123 pcitag_t tag; 124 int offset; 125 { 126 pcireg_t *datap, data; 127 struct tsp_config *pcp = cpv; 128 129 datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3)); 130 alpha_mb(); 131 data = *datap; 132 alpha_mb(); 133 return data; 134 } 135 136 void 137 tsp_conf_write(cpv, tag, offset, data) 138 void *cpv; 139 pcitag_t tag; 140 int offset; 141 pcireg_t data; 142 { 143 pcireg_t *datap; 144 struct tsp_config *pcp = cpv; 145 146 datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3)); 147 alpha_mb(); 148 *datap = data; 149 alpha_mb(); 150 } 151