1 /* $NetBSD: pci_machdep.c,v 1.24 2006/08/22 21:42:19 riz Exp $ */ 2 3 /* 4 * Copyright (c) 2000 Soren S. Jorvang. 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 AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: pci_machdep.c,v 1.24 2006/08/22 21:42:19 riz Exp $"); 30 31 #include <sys/types.h> 32 #include <sys/param.h> 33 #include <sys/time.h> 34 #include <sys/systm.h> 35 #include <sys/errno.h> 36 #include <sys/device.h> 37 #include <sys/extent.h> 38 39 #define _COBALT_BUS_DMA_PRIVATE 40 #include <machine/bus.h> 41 #include <machine/intr.h> 42 43 #include <dev/pci/pcivar.h> 44 #include <dev/pci/pcireg.h> 45 #include <dev/pci/pcidevs.h> 46 #include <dev/pci/pciconf.h> 47 #include <dev/pci/pciide_apollo_reg.h> 48 49 #include <cobalt/dev/gtreg.h> 50 51 /* 52 * PCI doesn't have any special needs; just use 53 * the generic versions of these functions. 54 */ 55 struct cobalt_bus_dma_tag pci_bus_dma_tag = { 56 _bus_dmamap_create, 57 _bus_dmamap_destroy, 58 _bus_dmamap_load, 59 _bus_dmamap_load_mbuf, 60 _bus_dmamap_load_uio, 61 _bus_dmamap_load_raw, 62 _bus_dmamap_unload, 63 _bus_dmamap_sync, 64 _bus_dmamem_alloc, 65 _bus_dmamem_free, 66 _bus_dmamem_map, 67 _bus_dmamem_unmap, 68 _bus_dmamem_mmap, 69 }; 70 71 void 72 pci_attach_hook(struct device *parent, struct device *self, 73 struct pcibus_attach_args *pba) 74 { 75 /* XXX */ 76 77 return; 78 } 79 80 int 81 pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 82 { 83 84 return 32; 85 } 86 87 pcitag_t 88 pci_make_tag(pci_chipset_tag_t pc, int bus, int device, int function) 89 { 90 91 return (bus << 16) | (device << 11) | (function << 8); 92 } 93 94 void 95 pci_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp, int *fp) 96 { 97 98 if (bp != NULL) 99 *bp = (tag >> 16) & 0xff; 100 if (dp != NULL) 101 *dp = (tag >> 11) & 0x1f; 102 if (fp != NULL) 103 *fp = (tag >> 8) & 0x07; 104 } 105 106 pcireg_t 107 pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 108 { 109 pcireg_t data; 110 int bus, dev, func; 111 112 pci_decompose_tag(pc, tag, &bus, &dev, &func); 113 114 /* 115 * 2700 hardware wedges on accesses to device 6. 116 */ 117 if (bus == 0 && dev == 6) 118 return 0; 119 /* 120 * 2800 hardware wedges on accesses to device 31. 121 */ 122 if (bus == 0 && dev == 31) 123 return 0; 124 125 bus_space_write_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_ADDR, 126 PCICFG_ENABLE | tag | reg); 127 data = bus_space_read_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_DATA); 128 bus_space_write_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_ADDR, 0); 129 130 return data; 131 } 132 133 void 134 pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t data) 135 { 136 137 bus_space_write_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_ADDR, 138 PCICFG_ENABLE | tag | reg); 139 bus_space_write_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_DATA, data); 140 bus_space_write_4(pc->pc_bst, pc->pc_bsh, GT_PCICFG_ADDR, 0); 141 } 142 143 int 144 pci_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp) 145 { 146 pci_chipset_tag_t pc = pa->pa_pc; 147 pcitag_t intrtag = pa->pa_intrtag; 148 int pin = pa->pa_intrpin; 149 int line = pa->pa_intrline; 150 int bus, dev, func; 151 152 pci_decompose_tag(pc, intrtag, &bus, &dev, &func); 153 154 /* 155 * The interrupt lines of the two Tulips are connected 156 * directly to the CPU. 157 */ 158 159 if (bus == 0 && dev == 7 && pin == PCI_INTERRUPT_PIN_A) 160 *ihp = 16 + 1; 161 else if (bus == 0 && dev == 12 && pin == PCI_INTERRUPT_PIN_A) 162 *ihp = 16 + 2; 163 else 164 *ihp = line; 165 166 return 0; 167 } 168 169 const char * 170 pci_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih) 171 { 172 static char irqstr[8]; 173 174 if (ih >= 16) 175 sprintf(irqstr, "level %d", ih - 16); 176 else 177 sprintf(irqstr, "irq %d", ih); 178 179 return irqstr; 180 } 181 182 const struct evcnt * 183 pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 184 { 185 186 /* XXX for now, no evcnt parent reported */ 187 return NULL; 188 } 189 190 void * 191 pci_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level, 192 int (*func)(void *), void *arg) 193 { 194 195 if (ih >= 16) 196 return cpu_intr_establish(ih - 16, level, func, arg); 197 else 198 return icu_intr_establish(ih, IST_LEVEL, level, func, arg); 199 } 200 201 void 202 pci_intr_disestablish(pci_chipset_tag_t pc, void *cookie) 203 { 204 205 /* Try both, only the valid one will disestablish. */ 206 cpu_intr_disestablish(cookie); 207 icu_intr_disestablish(cookie); 208 } 209 210 void 211 pci_conf_interrupt(pci_chipset_tag_t pc, int bus, int dev, int pin, int swiz, 212 int *iline) 213 { 214 215 /* not yet... */ 216 } 217 218 int 219 pci_conf_hook(pci_chipset_tag_t pc, int bus, int dev, int func, pcireg_t id) 220 { 221 222 /* ignore bogus IDs */ 223 if (PCI_VENDOR(id) == 0) 224 return 0; 225 226 /* 2700 hardware wedges on accesses to device 6. */ 227 if (bus == 0 && dev == 6) 228 return 0; 229 230 /* 2800 hardware wedges on accesses to device 31. */ 231 if (bus == 0 && dev == 31) 232 return 0; 233 234 /* Don't configure the bridge and PCI probe. */ 235 if (PCI_VENDOR(id) == PCI_VENDOR_MARVELL && 236 PCI_PRODUCT(id) == PCI_PRODUCT_MARVELL_GT64011) 237 return 0; 238 239 /* Don't configure on-board VIA VT82C586 (pcib, uhci) */ 240 if (bus == 0 && dev == 9 && (func == 0 || func == 2)) 241 return 0; 242 243 /* Enable viaide secondary port. Some firmware doesn't enable it. */ 244 if (bus == 0 && dev == 9 && func == 1) { 245 pcitag_t tag; 246 pcireg_t csr; 247 248 #define APO_VIAIDECONF (APO_VIA_REGBASE + 0x00) 249 250 tag = pci_make_tag(pc, bus, dev, func); 251 csr = pci_conf_read(pc, tag, APO_VIAIDECONF); 252 pci_conf_write(pc, tag, APO_VIAIDECONF, 253 csr | APO_IDECONF_EN(1)); 254 } 255 return PCI_CONF_DEFAULT & ~(PCI_COMMAND_SERR_ENABLE | 256 PCI_COMMAND_PARITY_ENABLE); 257 } 258