amd756.c revision 1.3.2.3
1 /* $NetBSD: amd756.c,v 1.3.2.3 2004/09/21 13:17:06 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1999, by UCHIYAMA Yasushi 42 * All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. The name of the developer may NOT be used to endorse or promote products 50 * derived from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 */ 64 65 /* 66 * Support for the Advanced Micro Devices AMD756 Peripheral Bus Controller. 67 */ 68 69 #include <sys/cdefs.h> 70 __KERNEL_RCSID(0, "$NetBSD: amd756.c,v 1.3.2.3 2004/09/21 13:17:06 skrll Exp $"); 71 72 #include <sys/param.h> 73 #include <sys/systm.h> 74 #include <sys/device.h> 75 #include <sys/malloc.h> 76 77 #include <machine/intr.h> 78 #include <machine/bus.h> 79 80 #include <dev/pci/pcivar.h> 81 #include <dev/pci/pcireg.h> 82 #include <dev/pci/pcidevs.h> 83 84 #include <i386/pci/pci_intr_fixup.h> 85 #include <i386/pci/amd756reg.h> 86 87 struct amd756_handle { 88 bus_space_tag_t ph_iot; 89 bus_space_handle_t ph_regs_ioh; 90 pci_chipset_tag_t ph_pc; 91 pcitag_t ph_tag; 92 }; 93 94 int amd756_getclink(pciintr_icu_handle_t, int, int *); 95 int amd756_get_intr(pciintr_icu_handle_t, int, int *); 96 int amd756_set_intr(pciintr_icu_handle_t, int, int); 97 int amd756_get_trigger(pciintr_icu_handle_t, int, int *); 98 int amd756_set_trigger(pciintr_icu_handle_t, int, int); 99 #ifdef AMD756_DEBUG 100 static void amd756_pir_dump(struct amd756_handle *); 101 #endif 102 103 const struct pciintr_icu amd756_pci_icu = { 104 amd756_getclink, 105 amd756_get_intr, 106 amd756_set_intr, 107 amd756_get_trigger, 108 amd756_set_trigger, 109 }; 110 111 112 int 113 amd756_init(pci_chipset_tag_t pc, bus_space_tag_t iot, pcitag_t tag, 114 pciintr_icu_tag_t *ptagp, pciintr_icu_handle_t *phandp) 115 { 116 struct amd756_handle *ph; 117 118 ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT); 119 if (ph == NULL) 120 return (1); 121 122 ph->ph_iot = iot; 123 ph->ph_pc = pc; 124 ph->ph_tag = tag; 125 126 *ptagp = &amd756_pci_icu; 127 *phandp = ph; 128 129 #ifdef AMD756_DEBUG 130 amd756_pir_dump(ph); 131 #endif 132 133 return (0); 134 } 135 136 int 137 amd756_getclink(pciintr_icu_handle_t v, int link, int *clinkp) 138 { 139 if (AMD756_LEGAL_LINK(link - 1) == 0) 140 return (1); 141 142 *clinkp = link - 1; 143 144 return (0); 145 } 146 147 int 148 amd756_get_intr(pciintr_icu_handle_t v, int clink, int *irqp) 149 { 150 struct amd756_handle *ph = v; 151 pcireg_t reg; 152 int val; 153 154 if (AMD756_LEGAL_LINK(clink) == 0) 155 return (1); 156 157 reg = AMD756_GET_PIIRQSEL(ph); 158 val = (reg >> (4 * clink)) & 0x0f; 159 *irqp = (val == 0) ? 160 X86_PCI_INTERRUPT_LINE_NO_CONNECTION : val; 161 162 return (0); 163 } 164 165 int 166 amd756_set_intr(pciintr_icu_handle_t v, int clink, int irq) 167 { 168 struct amd756_handle *ph = v; 169 int val; 170 pcireg_t reg; 171 172 if (AMD756_LEGAL_LINK(clink) == 0 || AMD756_LEGAL_IRQ(irq) == 0) 173 return (1); 174 175 reg = AMD756_GET_PIIRQSEL(ph); 176 amd756_get_intr(v, clink, &val); 177 reg &= ~(0x000f << (4 * clink)); 178 reg |= irq << (4 * clink); 179 AMD756_SET_PIIRQSEL(ph, reg); 180 181 return (0); 182 } 183 184 int 185 amd756_get_trigger(pciintr_icu_handle_t v, int irq, int *triggerp) 186 { 187 struct amd756_handle *ph = v; 188 int i, pciirq; 189 pcireg_t reg; 190 191 if (AMD756_LEGAL_IRQ(irq) == 0) 192 return (1); 193 194 for (i = 0; i <= 3; i++) { 195 amd756_get_intr(v, i, &pciirq); 196 if (pciirq == irq) { 197 reg = AMD756_GET_EDGESEL(ph); 198 if (reg & (1 << i)) 199 *triggerp = IST_EDGE; 200 else 201 *triggerp = IST_LEVEL; 202 break; 203 } 204 } 205 206 return (0); 207 } 208 209 int 210 amd756_set_trigger(pciintr_icu_handle_t v, int irq, int trigger) 211 { 212 struct amd756_handle *ph = v; 213 int i, pciirq; 214 pcireg_t reg; 215 216 if (AMD756_LEGAL_IRQ(irq) == 0) 217 return (1); 218 219 for (i = 0; i <= 3; i++) { 220 amd756_get_intr(v, i, &pciirq); 221 if (pciirq == irq) { 222 reg = AMD756_GET_PIIRQSEL(ph); 223 if (trigger == IST_LEVEL) 224 reg &= ~(1 << (4 * i)); 225 else 226 reg |= 1 << (4 * i); 227 AMD756_SET_PIIRQSEL(ph, reg); 228 break; 229 } 230 } 231 232 return (0); 233 } 234 235 #ifdef AMD756_DEBUG 236 static void 237 amd756_pir_dump(struct amd756_handle *ph) 238 { 239 int a, b; 240 241 printf ("AMD756 PCI INTERRUPT ROUTING REGISTERS:\n"); 242 243 a = AMD756_GET_EDGESEL(ph); 244 b = AMD756_GET_PIIRQSEL(ph); 245 246 printf ("TRIGGER: %02x, ROUTING: %04x\n", a, b); 247 } 248 #endif 249
Indexes created Sun Oct 19 02:09:48 GMT 2025