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path: root/drivers/pci/quirks.c
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Diffstat (limited to 'drivers/pci/quirks.c')
-rw-r--r--drivers/pci/quirks.c113
1 files changed, 0 insertions, 113 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 65d6f23ead41..3411483240cd 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1303,119 +1303,6 @@ static void __init quirk_alder_ioapic(struct pci_dev *pdev)
1303DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic ); 1303DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic );
1304#endif 1304#endif
1305 1305
1306enum ide_combined_type { COMBINED = 0, IDE = 1, LIBATA = 2 };
1307/* Defaults to combined */
1308static enum ide_combined_type combined_mode;
1309
1310static int __init combined_setup(char *str)
1311{
1312 if (!strncmp(str, "ide", 3))
1313 combined_mode = IDE;
1314 else if (!strncmp(str, "libata", 6))
1315 combined_mode = LIBATA;
1316 else /* "combined" or anything else defaults to old behavior */
1317 combined_mode = COMBINED;
1318
1319 return 1;
1320}
1321__setup("combined_mode=", combined_setup);
1322
1323#ifdef CONFIG_SATA_INTEL_COMBINED
1324static void __devinit quirk_intel_ide_combined(struct pci_dev *pdev)
1325{
1326 u8 prog, comb, tmp;
1327 int ich = 0;
1328
1329 /*
1330 * Narrow down to Intel SATA PCI devices.
1331 */
1332 switch (pdev->device) {
1333 /* PCI ids taken from drivers/scsi/ata_piix.c */
1334 case 0x24d1:
1335 case 0x24df:
1336 case 0x25a3:
1337 case 0x25b0:
1338 ich = 5;
1339 break;
1340 case 0x2651:
1341 case 0x2652:
1342 case 0x2653:
1343 case 0x2680: /* ESB2 */
1344 ich = 6;
1345 break;
1346 case 0x27c0:
1347 case 0x27c4:
1348 ich = 7;
1349 break;
1350 case 0x2828: /* ICH8M */
1351 ich = 8;
1352 break;
1353 default:
1354 /* we do not handle this PCI device */
1355 return;
1356 }
1357
1358 /*
1359 * Read combined mode register.
1360 */
1361 pci_read_config_byte(pdev, 0x90, &tmp); /* combined mode reg */
1362
1363 if (ich == 5) {
1364 tmp &= 0x6; /* interesting bits 2:1, PATA primary/secondary */
1365 if (tmp == 0x4) /* bits 10x */
1366 comb = (1 << 0); /* SATA port 0, PATA port 1 */
1367 else if (tmp == 0x6) /* bits 11x */
1368 comb = (1 << 2); /* PATA port 0, SATA port 1 */
1369 else
1370 return; /* not in combined mode */
1371 } else {
1372 WARN_ON((ich != 6) && (ich != 7) && (ich != 8));
1373 tmp &= 0x3; /* interesting bits 1:0 */
1374 if (tmp & (1 << 0))
1375 comb = (1 << 2); /* PATA port 0, SATA port 1 */
1376 else if (tmp & (1 << 1))
1377 comb = (1 << 0); /* SATA port 0, PATA port 1 */
1378 else
1379 return; /* not in combined mode */
1380 }
1381
1382 /*
1383 * Read programming interface register.
1384 * (Tells us if it's legacy or native mode)
1385 */
1386 pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog);
1387
1388 /* if SATA port is in native mode, we're ok. */
1389 if (prog & comb)
1390 return;
1391
1392 /* Don't reserve any so the IDE driver can get them (but only if
1393 * combined_mode=ide).
1394 */
1395 if (combined_mode == IDE)
1396 return;
1397
1398 /* Grab them both for libata if combined_mode=libata. */
1399 if (combined_mode == LIBATA) {
1400 request_region(0x1f0, 8, "libata"); /* port 0 */
1401 request_region(0x170, 8, "libata"); /* port 1 */
1402 return;
1403 }
1404
1405 /* SATA port is in legacy mode. Reserve port so that
1406 * IDE driver does not attempt to use it. If request_region
1407 * fails, it will be obvious at boot time, so we don't bother
1408 * checking return values.
1409 */
1410 if (comb == (1 << 0))
1411 request_region(0x1f0, 8, "libata"); /* port 0 */
1412 else
1413 request_region(0x170, 8, "libata"); /* port 1 */
1414}
1415DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, quirk_intel_ide_combined );
1416#endif /* CONFIG_SATA_INTEL_COMBINED */
1417
1418
1419int pcie_mch_quirk; 1306int pcie_mch_quirk;
1420EXPORT_SYMBOL(pcie_mch_quirk); 1307EXPORT_SYMBOL(pcie_mch_quirk);
1421 1308