tsunami_pchip.cc revision 2846
1/* 2 * Copyright (c) 2004-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Ali Saidi 29 * Andrew Schultz 30 */ 31 32/** @file 33 * Tsunami PChip (pci) 34 */ 35 36#include <deque> 37#include <string> 38#include <vector> 39 40#include "base/trace.hh" 41#include "dev/tsunami_pchip.hh" 42#include "dev/tsunamireg.h" 43#include "dev/tsunami.hh" 44#include "mem/packet.hh" 45#include "sim/builder.hh" 46#include "sim/system.hh" 47 48using namespace std; 49//Should this be AlphaISA? 50using namespace TheISA; 51 52TsunamiPChip::TsunamiPChip(Params *p) 53: BasicPioDevice(p) 54{ 55 pioSize = 0xfff; 56 57 for (int i = 0; i < 4; i++) { 58 wsba[i] = 0; 59 wsm[i] = 0; 60 tba[i] = 0; 61 } 62 63 // initialize pchip control register 64 pctl = (ULL(0x1) << 20) | (ULL(0x1) << 32) | (ULL(0x2) << 36); 65 66 //Set back pointer in tsunami 67 p->tsunami->pchip = this; 68} 69 70Tick 71TsunamiPChip::read(Packet *pkt) 72{ 73 assert(pkt->result == Packet::Unknown); 74 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize); 75 76 pkt->allocate(); 77 Addr daddr = (pkt->getAddr() - pioAddr) >> 6;; 78 assert(pkt->getSize() == sizeof(uint64_t)); 79 80 81 DPRINTF(Tsunami, "read va=%#x size=%d\n", pkt->getAddr(), pkt->getSize()); 82 83 switch(daddr) { 84 case TSDEV_PC_WSBA0: 85 pkt->set(wsba[0]); 86 break; 87 case TSDEV_PC_WSBA1: 88 pkt->set(wsba[1]); 89 break; 90 case TSDEV_PC_WSBA2: 91 pkt->set(wsba[2]); 92 break; 93 case TSDEV_PC_WSBA3: 94 pkt->set(wsba[3]); 95 break; 96 case TSDEV_PC_WSM0: 97 pkt->set(wsm[0]); 98 break; 99 case TSDEV_PC_WSM1: 100 pkt->set(wsm[1]); 101 break; 102 case TSDEV_PC_WSM2: 103 pkt->set(wsm[2]); 104 break; 105 case TSDEV_PC_WSM3: 106 pkt->set(wsm[3]); 107 break; 108 case TSDEV_PC_TBA0: 109 pkt->set(tba[0]); 110 break; 111 case TSDEV_PC_TBA1: 112 pkt->set(tba[1]); 113 break; 114 case TSDEV_PC_TBA2: 115 pkt->set(tba[2]); 116 break; 117 case TSDEV_PC_TBA3: 118 pkt->set(tba[3]); 119 break; 120 case TSDEV_PC_PCTL: 121 pkt->set(pctl); 122 break; 123 case TSDEV_PC_PLAT: 124 panic("PC_PLAT not implemented\n"); 125 case TSDEV_PC_RES: 126 panic("PC_RES not implemented\n"); 127 case TSDEV_PC_PERROR: 128 pkt->set((uint64_t)0x00); 129 break; 130 case TSDEV_PC_PERRMASK: 131 pkt->set((uint64_t)0x00); 132 break; 133 case TSDEV_PC_PERRSET: 134 panic("PC_PERRSET not implemented\n"); 135 case TSDEV_PC_TLBIV: 136 panic("PC_TLBIV not implemented\n"); 137 case TSDEV_PC_TLBIA: 138 pkt->set((uint64_t)0x00); // shouldn't be readable, but linux 139 break; 140 case TSDEV_PC_PMONCTL: 141 panic("PC_PMONCTL not implemented\n"); 142 case TSDEV_PC_PMONCNT: 143 panic("PC_PMONCTN not implemented\n"); 144 default: 145 panic("Default in PChip Read reached reading 0x%x\n", daddr); 146 } 147 pkt->result = Packet::Success; 148 return pioDelay; 149 150} 151 152Tick 153TsunamiPChip::write(Packet *pkt) 154{ 155 assert(pkt->result == Packet::Unknown); 156 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize); 157 Addr daddr = (pkt->getAddr() - pioAddr) >> 6; 158 159 assert(pkt->getSize() == sizeof(uint64_t)); 160 161 DPRINTF(Tsunami, "write - va=%#x size=%d \n", pkt->getAddr(), pkt->getSize()); 162 163 switch(daddr) { 164 case TSDEV_PC_WSBA0: 165 wsba[0] = pkt->get<uint64_t>(); 166 break; 167 case TSDEV_PC_WSBA1: 168 wsba[1] = pkt->get<uint64_t>(); 169 break; 170 case TSDEV_PC_WSBA2: 171 wsba[2] = pkt->get<uint64_t>(); 172 break; 173 case TSDEV_PC_WSBA3: 174 wsba[3] = pkt->get<uint64_t>(); 175 break; 176 case TSDEV_PC_WSM0: 177 wsm[0] = pkt->get<uint64_t>(); 178 break; 179 case TSDEV_PC_WSM1: 180 wsm[1] = pkt->get<uint64_t>(); 181 break; 182 case TSDEV_PC_WSM2: 183 wsm[2] = pkt->get<uint64_t>(); 184 break; 185 case TSDEV_PC_WSM3: 186 wsm[3] = pkt->get<uint64_t>(); 187 break; 188 case TSDEV_PC_TBA0: 189 tba[0] = pkt->get<uint64_t>(); 190 break; 191 case TSDEV_PC_TBA1: 192 tba[1] = pkt->get<uint64_t>(); 193 break; 194 case TSDEV_PC_TBA2: 195 tba[2] = pkt->get<uint64_t>(); 196 break; 197 case TSDEV_PC_TBA3: 198 tba[3] = pkt->get<uint64_t>(); 199 break; 200 case TSDEV_PC_PCTL: 201 pctl = pkt->get<uint64_t>(); 202 break; 203 case TSDEV_PC_PLAT: 204 panic("PC_PLAT not implemented\n"); 205 case TSDEV_PC_RES: 206 panic("PC_RES not implemented\n"); 207 case TSDEV_PC_PERROR: 208 break; 209 case TSDEV_PC_PERRMASK: 210 panic("PC_PERRMASK not implemented\n"); 211 case TSDEV_PC_PERRSET: 212 panic("PC_PERRSET not implemented\n"); 213 case TSDEV_PC_TLBIV: 214 panic("PC_TLBIV not implemented\n"); 215 case TSDEV_PC_TLBIA: 216 break; // value ignored, supposted to invalidate SG TLB 217 case TSDEV_PC_PMONCTL: 218 panic("PC_PMONCTL not implemented\n"); 219 case TSDEV_PC_PMONCNT: 220 panic("PC_PMONCTN not implemented\n"); 221 default: 222 panic("Default in PChip write reached reading 0x%x\n", daddr); 223 224 } // uint64_t 225 226 pkt->result = Packet::Success; 227 return pioDelay; 228} 229 230#define DMA_ADDR_MASK ULL(0x3ffffffff) 231 232Addr 233TsunamiPChip::translatePciToDma(Addr busAddr) 234{ 235 // compare the address to the window base registers 236 uint64_t tbaMask = 0; 237 uint64_t baMask = 0; 238 239 uint64_t windowMask = 0; 240 uint64_t windowBase = 0; 241 242 uint64_t pteEntry = 0; 243 244 Addr pteAddr; 245 Addr dmaAddr; 246 247#if 0 248 DPRINTF(IdeDisk, "Translation for bus address: %#x\n", busAddr); 249 for (int i = 0; i < 4; i++) { 250 DPRINTF(IdeDisk, "(%d) base:%#x mask:%#x\n", 251 i, wsba[i], wsm[i]); 252 253 windowBase = wsba[i]; 254 windowMask = ~wsm[i] & (ULL(0xfff) << 20); 255 256 if ((busAddr & windowMask) == (windowBase & windowMask)) { 257 DPRINTF(IdeDisk, "Would have matched %d (wb:%#x wm:%#x --> ba&wm:%#x wb&wm:%#x)\n", 258 i, windowBase, windowMask, (busAddr & windowMask), 259 (windowBase & windowMask)); 260 } 261 } 262#endif 263 264 for (int i = 0; i < 4; i++) { 265 266 windowBase = wsba[i]; 267 windowMask = ~wsm[i] & (ULL(0xfff) << 20); 268 269 if ((busAddr & windowMask) == (windowBase & windowMask)) { 270 271 if (wsba[i] & 0x1) { // see if enabled 272 if (wsba[i] & 0x2) { // see if SG bit is set 273 /** @todo 274 This currently is faked by just doing a direct 275 read from memory, however, to be realistic, this 276 needs to actually do a bus transaction. The process 277 is explained in the tsunami documentation on page 278 10-12 and basically munges the address to look up a 279 PTE from a table in memory and then uses that mapping 280 to create an address for the SG page 281 */ 282 283 tbaMask = ~(((wsm[i] & (ULL(0xfff) << 20)) >> 10) | ULL(0x3ff)); 284 baMask = (wsm[i] & (ULL(0xfff) << 20)) | (ULL(0x7f) << 13); 285 pteAddr = (tba[i] & tbaMask) | ((busAddr & baMask) >> 10); 286 287 pioPort->readBlob(pteAddr, (uint8_t*)&pteEntry, sizeof(uint64_t)); 288 289 dmaAddr = ((pteEntry & ~ULL(0x1)) << 12) | (busAddr & ULL(0x1fff)); 290 291 } else { 292 baMask = (wsm[i] & (ULL(0xfff) << 20)) | ULL(0xfffff); 293 tbaMask = ~baMask; 294 dmaAddr = (tba[i] & tbaMask) | (busAddr & baMask); 295 } 296 297 return (dmaAddr & DMA_ADDR_MASK); 298 } 299 } 300 } 301 302 // if no match was found, then return the original address 303 return busAddr; 304} 305Addr 306TsunamiPChip::calcConfigAddr(int bus, int dev, int func) 307{ 308 assert(func < 8); 309 assert(dev < 32); 310 assert(bus == 0); 311 312 return TsunamiPciBus0Config | (func << 8) | (dev << 11); 313} 314 315 316 317void 318TsunamiPChip::serialize(std::ostream &os) 319{ 320 SERIALIZE_SCALAR(pctl); 321 SERIALIZE_ARRAY(wsba, 4); 322 SERIALIZE_ARRAY(wsm, 4); 323 SERIALIZE_ARRAY(tba, 4); 324} 325 326void 327TsunamiPChip::unserialize(Checkpoint *cp, const std::string §ion) 328{ 329 UNSERIALIZE_SCALAR(pctl); 330 UNSERIALIZE_ARRAY(wsba, 4); 331 UNSERIALIZE_ARRAY(wsm, 4); 332 UNSERIALIZE_ARRAY(tba, 4); 333} 334 335 336BEGIN_DECLARE_SIM_OBJECT_PARAMS(TsunamiPChip) 337 338 Param<Addr> pio_addr; 339 Param<Tick> pio_latency; 340 SimObjectParam<Platform *> platform; 341 SimObjectParam<System *> system; 342 SimObjectParam<Tsunami *> tsunami; 343 344END_DECLARE_SIM_OBJECT_PARAMS(TsunamiPChip) 345 346BEGIN_INIT_SIM_OBJECT_PARAMS(TsunamiPChip) 347 348 INIT_PARAM(pio_addr, "Device Address"), 349 INIT_PARAM(pio_latency, "Programmed IO latency"), 350 INIT_PARAM(platform, "platform"), 351 INIT_PARAM(system, "system object"), 352 INIT_PARAM(tsunami, "Tsunami") 353 354END_INIT_SIM_OBJECT_PARAMS(TsunamiPChip) 355 356CREATE_SIM_OBJECT(TsunamiPChip) 357{ 358 TsunamiPChip::Params *p = new TsunamiPChip::Params; 359 p->name = getInstanceName(); 360 p->pio_addr = pio_addr; 361 p->pio_delay = pio_latency; 362 p->platform = platform; 363 p->system = system; 364 p->tsunami = tsunami; 365 return new TsunamiPChip(p); 366} 367 368REGISTER_SIM_OBJECT("TsunamiPChip", TsunamiPChip) 369