1/* $NetBSD: i80312.c,v 1.20 2011/05/17 17:34:48 dyoung Exp $ */ 2 3/* 4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38/* 39 * Autoconfiguration support for the Intel i80312 Companion I/O chip. 40 */ 41 42#include <sys/cdefs.h> 43__KERNEL_RCSID(0, "$NetBSD: i80312.c,v 1.20 2011/05/17 17:34:48 dyoung Exp $"); 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/device.h> 48 49#define _ARM32_BUS_DMA_PRIVATE 50#include <sys/bus.h> 51 52#include <arm/xscale/i80312reg.h> 53#include <arm/xscale/i80312var.h> 54 55#include <dev/pci/ppbreg.h> 56 57/* 58 * Statically-allocated bus_space structure used to access the 59 * i80312's own registers. 60 */ 61struct bus_space i80312_bs_tag; 62 63/* 64 * There can be only one i80312, so we keep a global pointer to 65 * the softc, so board-specific code can use features of the 66 * i80312 without having to have a handle on the softc itself. 67 */ 68struct i80312_softc *i80312_softc; 69 70static void i80312_pci_dma_init(struct i80312_softc *); 71static void i80312_local_dma_init(struct i80312_softc *); 72 73static int i80312_iopxs_print(void *, const char *); 74 75/* Built-in devices. */ 76static const struct iopxs_device { 77 const char *id_name; 78 bus_addr_t id_offset; 79 bus_size_t id_size; 80} iopxs_devices[] = { 81/* { "iopaau", I80312_AAU_BASE, I80312_AAU_SIZE }, */ 82/* { "iopdma", I80312_DMA_BASE0, I80312_DMA_SIZE }, */ 83/* { "iopdma", I80312_DMA_BASE1, I80312_DMA_SIZE }, */ 84 { "iopiic", I80312_IIC_BASE, I80312_IIC_SIZE }, 85/* { "iopmu", I80312_MSG_BASE, I80312_MU_SIZE }, */ 86 { NULL, 0, 0 } 87}; 88 89/* 90 * i80312_attach: 91 * 92 * Board-independent attach routine for the i80312. 93 */ 94void 95i80312_attach(struct i80312_softc *sc) 96{ 97 struct pcibus_attach_args pba; 98 const struct iopxs_device *id; 99 struct iopxs_attach_args ia; 100 uint32_t atucr; 101 pcireg_t preg; 102 103 i80312_softc = sc; 104 105 /* 106 * Slice off some useful subregion handles. 107 */ 108 109 if (bus_space_subregion(sc->sc_st, sc->sc_sh, I80312_PPB_BASE, 110 I80312_PPB_SIZE, &sc->sc_ppb_sh)) 111 panic("%s: unable to subregion PPB registers", 112 sc->sc_dev.dv_xname); 113 114 if (bus_space_subregion(sc->sc_st, sc->sc_sh, I80312_ATU_BASE, 115 I80312_ATU_SIZE, &sc->sc_atu_sh)) 116 panic("%s: unable to subregion ATU registers", 117 sc->sc_dev.dv_xname); 118 119 if (bus_space_subregion(sc->sc_st, sc->sc_sh, I80312_INTC_BASE, 120 I80312_INTC_SIZE, &sc->sc_intc_sh)) 121 panic("%s: unable to subregion INTC registers", 122 sc->sc_dev.dv_xname); 123 124 /* We expect the Memory Controller to be already sliced off. */ 125 126 /* 127 * Disable the private space decode. 128 */ 129 sc->sc_sder = bus_space_read_1(sc->sc_st, sc->sc_ppb_sh, 130 I80312_PPB_SDER); 131 sc->sc_sder &= ~PPB_SDER_PMSE; 132 bus_space_write_1(sc->sc_st, sc->sc_ppb_sh, 133 I80312_PPB_SDER, sc->sc_sder); 134 135 /* 136 * Program the Secondary ID Select register. 137 */ 138 bus_space_write_2(sc->sc_st, sc->sc_ppb_sh, 139 I80312_PPB_SISR, sc->sc_sisr); 140 141 /* 142 * Program the private secondary bus spaces. 143 */ 144 if (sc->sc_privmem_size && sc->sc_privio_size) { 145 bus_space_write_1(sc->sc_st, sc->sc_ppb_sh, I80312_PPB_SIOBR, 146 (sc->sc_privio_base >> 12) << 4); 147 bus_space_write_1(sc->sc_st, sc->sc_ppb_sh, I80312_PPB_SIOLR, 148 ((sc->sc_privio_base + sc->sc_privio_size - 1) 149 >> 12) << 4); 150 151 bus_space_write_2(sc->sc_st, sc->sc_ppb_sh, I80312_PPB_SMBR, 152 (sc->sc_privmem_base >> 20) << 4); 153 bus_space_write_2(sc->sc_st, sc->sc_ppb_sh, I80312_PPB_SMLR, 154 ((sc->sc_privmem_base + sc->sc_privmem_size - 1) 155 >> 20) << 4); 156 157 sc->sc_sder |= PPB_SDER_PMSE; 158 bus_space_write_1(sc->sc_st, sc->sc_ppb_sh, I80312_PPB_SDER, 159 sc->sc_sder); 160 } else if (sc->sc_privmem_size || sc->sc_privio_size) { 161 printf("%s: WARNING: privmem_size 0x%08x privio_size 0x%08x\n", 162 sc->sc_dev.dv_xname, sc->sc_privmem_size, 163 sc->sc_privio_size); 164 printf("%s: private bus spaces not enabled\n", 165 sc->sc_dev.dv_xname); 166 } 167 168 /* 169 * Program the Primary Inbound window. 170 */ 171 if (sc->sc_is_host) 172 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 173 PCI_MAPREG_START, sc->sc_pin_base); 174 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 175 I80312_ATU_PIAL, ATU_LIMIT(sc->sc_pin_size)); 176 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 177 I80312_ATU_PIATV, sc->sc_pin_xlate); 178 179 /* 180 * Program the Secondary Inbound window. 181 */ 182 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 183 I80312_ATU_SIAM, sc->sc_sin_base); 184 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 185 I80312_ATU_SIAL, ATU_LIMIT(sc->sc_sin_size)); 186 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 187 I80312_ATU_SIATV, sc->sc_sin_xlate); 188 189 /* 190 * Mask (disable) the ATU interrupt sources. 191 * XXX May want to revisit this if we encounter 192 * XXX an application that wants it. 193 */ 194 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 195 I80312_ATU_PAIM, 196 ATU_AIM_MPEIM | ATU_AIM_TATIM | ATU_AIM_TAMIM | 197 ATU_AIM_MAIM | ATU_AIM_SAIM | ATU_AIM_DPEIM | 198 ATU_AIM_PSTIM); 199 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 200 I80312_ATU_SAIM, 201 ATU_AIM_MPEIM | ATU_AIM_TATIM | ATU_AIM_TAMIM | 202 ATU_AIM_MAIM | ATU_AIM_SAIM | ATU_AIM_DPEIM); 203 204 /* 205 * Clear: 206 * 207 * Primary Outbound ATU Enable 208 * Secondary Outbound ATU Enable 209 * Secondary Direct Addressing Select 210 * Direct Addressing Enable 211 */ 212 atucr = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, I80312_ATU_ACR); 213 atucr &= ~(ATU_ACR_POAE|ATU_ACR_SOAE|ATU_ACR_SDAS|ATU_ACR_DAE); 214 215 /* 216 * Program the Primary Outbound windows. 217 */ 218 if (sc->sc_pmemout_size) 219 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 220 I80312_ATU_POMWV, sc->sc_pmemout_base); 221 if (sc->sc_pioout_size) 222 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 223 I80312_ATU_POIOWV, sc->sc_pioout_base); 224 if (sc->sc_pmemout_size || sc->sc_pioout_size) 225 atucr |= ATU_ACR_POAE; 226 227 /* 228 * Program the Secondary Outbound windows. 229 */ 230 if (sc->sc_smemout_size) 231 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 232 I80312_ATU_SOMWV, sc->sc_smemout_base); 233 if (sc->sc_sioout_size) 234 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 235 I80312_ATU_SOIOWV, sc->sc_sioout_base); 236 if (sc->sc_smemout_size || sc->sc_sioout_size) 237 atucr |= ATU_ACR_SOAE; 238 239 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, I80312_ATU_ACR, atucr); 240 241 /* 242 * Enable bus mastering, memory access, SERR, and parity 243 * checking on the ATU. 244 */ 245 if (sc->sc_is_host) { 246 preg = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, 247 PCI_COMMAND_STATUS_REG); 248 preg |= PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE | 249 PCI_COMMAND_PARITY_ENABLE | PCI_COMMAND_SERR_ENABLE; 250 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 251 PCI_COMMAND_STATUS_REG, preg); 252 } 253 preg = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, 254 I80312_ATU_SACS); 255 preg |= PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE | 256 PCI_COMMAND_PARITY_ENABLE | PCI_COMMAND_SERR_ENABLE; 257 bus_space_write_4(sc->sc_st, sc->sc_atu_sh, 258 I80312_ATU_SACS, preg); 259 260 /* 261 * Configure the bridge. If we're a host, set the primary 262 * bus to bus #0 and the secondary bus to bus #1. We also 263 * set the PPB's subordinate bus # to 1. It will be fixed 264 * up later when we fully configure the bus. 265 * 266 * If we're a slave, just use the bus #'s that the host 267 * provides. 268 */ 269 if (sc->sc_is_host) { 270 bus_space_write_4(sc->sc_st, sc->sc_ppb_sh, 271 PPB_REG_BUSINFO, 272 (0 << PCI_BRIDGE_BUS_PRIMARY_SHIFT) | 273 (1 << PCI_BRIDGE_BUS_SECONDARY_SHIFT) | 274 (1 << PCI_BRIDGE_BUS_SUBORDINATE_SHIFT)); 275 } 276 277 /* Initialize the bus space tags. */ 278 i80312_io_bs_init(&sc->sc_pci_iot, sc); 279 i80312_mem_bs_init(&sc->sc_pci_memt, sc); 280 281 /* Initialize the PCI chipset tag. */ 282 i80312_pci_init(&sc->sc_pci_chipset, sc); 283 284 /* Initialize the DMA tags. */ 285 i80312_pci_dma_init(sc); 286 i80312_local_dma_init(sc); 287 288 /* 289 * Attach all the IOP built-ins. 290 */ 291 for (id = iopxs_devices; id->id_name != NULL; id++) { 292 ia.ia_name = id->id_name; 293 ia.ia_st = sc->sc_st; 294 ia.ia_sh = sc->sc_sh; 295 ia.ia_dmat = &sc->sc_local_dmat; 296 ia.ia_offset = id->id_offset; 297 ia.ia_size = id->id_size; 298 299 (void) config_found_ia(&sc->sc_dev, "iopxs", &ia, i80312_iopxs_print); 300 } 301 302 /* 303 * Attach the PCI bus. 304 * 305 * Note: We only probe the Secondary PCI bus, since that 306 * is the only bus on which we can have a private device 307 * space. 308 */ 309 preg = bus_space_read_4(sc->sc_st, sc->sc_ppb_sh, PPB_REG_BUSINFO); 310 pba.pba_iot = &sc->sc_pci_iot; 311 pba.pba_memt = &sc->sc_pci_memt; 312 pba.pba_dmat = &sc->sc_pci_dmat; 313 pba.pba_dmat64 = NULL; 314 pba.pba_pc = &sc->sc_pci_chipset; 315 pba.pba_bus = PPB_BUSINFO_SECONDARY(preg); 316 pba.pba_bridgetag = NULL; 317 pba.pba_intrswiz = 3; 318 pba.pba_intrtag = 0; 319 /* XXX MRL/MRM/MWI seem to have problems, at the moment. */ 320 pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY /* | 321 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY */; 322 (void) config_found_ia(&sc->sc_dev, "pcibus", &pba, pcibusprint); 323} 324 325/* 326 * i80312_iopxs_print: 327 * 328 * Autoconfiguration cfprint routine when attaching 329 * to the "iopxs" device. 330 */ 331static int 332i80312_iopxs_print(void *aux, const char *pnp) 333{ 334 335 return (QUIET); 336} 337 338/* 339 * i80312_pci_dma_init: 340 * 341 * Initialize the PCI DMA tag. 342 */ 343static void 344i80312_pci_dma_init(struct i80312_softc *sc) 345{ 346 bus_dma_tag_t dmat = &sc->sc_pci_dmat; 347 struct arm32_dma_range *dr = &sc->sc_pci_dma_range; 348 349 dr->dr_sysbase = sc->sc_sin_xlate; 350 dr->dr_busbase = sc->sc_sin_base; 351 dr->dr_len = sc->sc_sin_size; 352 353 dmat->_ranges = dr; 354 dmat->_nranges = 1; 355 356 dmat->_dmamap_create = _bus_dmamap_create; 357 dmat->_dmamap_destroy = _bus_dmamap_destroy; 358 dmat->_dmamap_load = _bus_dmamap_load; 359 dmat->_dmamap_load_mbuf = _bus_dmamap_load_mbuf; 360 dmat->_dmamap_load_uio = _bus_dmamap_load_uio; 361 dmat->_dmamap_load_raw = _bus_dmamap_load_raw; 362 dmat->_dmamap_unload = _bus_dmamap_unload; 363 dmat->_dmamap_sync_pre = _bus_dmamap_sync; 364 dmat->_dmamap_sync_post = NULL; 365 366 dmat->_dmamem_alloc = _bus_dmamem_alloc; 367 dmat->_dmamem_free = _bus_dmamem_free; 368 dmat->_dmamem_map = _bus_dmamem_map; 369 dmat->_dmamem_unmap = _bus_dmamem_unmap; 370 dmat->_dmamem_mmap = _bus_dmamem_mmap; 371} 372 373/* 374 * i80312_local_dma_init: 375 * 376 * Initialize the local DMA tag. 377 */ 378static void 379i80312_local_dma_init(struct i80312_softc *sc) 380{ 381 bus_dma_tag_t dmat = &sc->sc_local_dmat; 382 383 dmat->_ranges = NULL; 384 dmat->_nranges = 0; 385 386 dmat->_dmamap_create = _bus_dmamap_create; 387 dmat->_dmamap_destroy = _bus_dmamap_destroy; 388 dmat->_dmamap_load = _bus_dmamap_load; 389 dmat->_dmamap_load_mbuf = _bus_dmamap_load_mbuf; 390 dmat->_dmamap_load_uio = _bus_dmamap_load_uio; 391 dmat->_dmamap_load_raw = _bus_dmamap_load_raw; 392 dmat->_dmamap_unload = _bus_dmamap_unload; 393 dmat->_dmamap_sync_pre = _bus_dmamap_sync; 394 dmat->_dmamap_sync_post = NULL; 395 396 dmat->_dmamem_alloc = _bus_dmamem_alloc; 397 dmat->_dmamem_free = _bus_dmamem_free; 398 dmat->_dmamem_map = _bus_dmamem_map; 399 dmat->_dmamem_unmap = _bus_dmamem_unmap; 400 dmat->_dmamem_mmap = _bus_dmamem_mmap; 401} 402