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-rw-r--r--arch/powerpc/Kconfig1
-rw-r--r--arch/powerpc/kernel/pci_64.c35
-rw-r--r--arch/powerpc/kernel/prom.c26
-rw-r--r--arch/powerpc/kernel/udbg.c2
-rw-r--r--arch/powerpc/platforms/maple/setup.c4
-rw-r--r--arch/powerpc/platforms/powermac/feature.c65
-rw-r--r--arch/powerpc/platforms/powermac/pci.c210
-rw-r--r--arch/powerpc/platforms/powermac/pic.c72
-rw-r--r--arch/powerpc/platforms/powermac/setup.c13
-rw-r--r--arch/powerpc/platforms/powermac/smp.c319
-rw-r--r--arch/powerpc/sysdev/Makefile2
-rw-r--r--arch/powerpc/sysdev/dart.h41
-rw-r--r--arch/powerpc/sysdev/dart_iommu.c (renamed from arch/powerpc/sysdev/u3_iommu.c)173
-rw-r--r--arch/powerpc/sysdev/mpic.c199
14 files changed, 791 insertions, 371 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 773b880d5577..5692edb3491e 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -300,6 +300,7 @@ config PPC_PMAC64
300 bool 300 bool
301 depends on PPC_PMAC && POWER4 301 depends on PPC_PMAC && POWER4
302 select U3_DART 302 select U3_DART
303 select MPIC_BROKEN_U3
303 select GENERIC_TBSYNC 304 select GENERIC_TBSYNC
304 default y 305 default y
305 306
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 523f35087e81..f73a16e9867a 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -34,7 +34,7 @@
34 34
35#ifdef DEBUG 35#ifdef DEBUG
36#include <asm/udbg.h> 36#include <asm/udbg.h>
37#define DBG(fmt...) udbg_printf(fmt) 37#define DBG(fmt...) printk(fmt)
38#else 38#else
39#define DBG(fmt...) 39#define DBG(fmt...)
40#endif 40#endif
@@ -323,6 +323,7 @@ static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev)
323 addrs = (u32 *) get_property(node, "assigned-addresses", &proplen); 323 addrs = (u32 *) get_property(node, "assigned-addresses", &proplen);
324 if (!addrs) 324 if (!addrs)
325 return; 325 return;
326 DBG(" parse addresses (%d bytes) @ %p\n", proplen, addrs);
326 for (; proplen >= 20; proplen -= 20, addrs += 5) { 327 for (; proplen >= 20; proplen -= 20, addrs += 5) {
327 flags = pci_parse_of_flags(addrs[0]); 328 flags = pci_parse_of_flags(addrs[0]);
328 if (!flags) 329 if (!flags)
@@ -332,6 +333,9 @@ static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev)
332 if (!size) 333 if (!size)
333 continue; 334 continue;
334 i = addrs[0] & 0xff; 335 i = addrs[0] & 0xff;
336 DBG(" base: %llx, size: %llx, i: %x\n",
337 (unsigned long long)base, (unsigned long long)size, i);
338
335 if (PCI_BASE_ADDRESS_0 <= i && i <= PCI_BASE_ADDRESS_5) { 339 if (PCI_BASE_ADDRESS_0 <= i && i <= PCI_BASE_ADDRESS_5) {
336 res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2]; 340 res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2];
337 } else if (i == dev->rom_base_reg) { 341 } else if (i == dev->rom_base_reg) {
@@ -362,6 +366,8 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,
362 if (type == NULL) 366 if (type == NULL)
363 type = ""; 367 type = "";
364 368
369 DBG(" create device, devfn: %x, type: %s\n", devfn, type);
370
365 memset(dev, 0, sizeof(struct pci_dev)); 371 memset(dev, 0, sizeof(struct pci_dev));
366 dev->bus = bus; 372 dev->bus = bus;
367 dev->sysdata = node; 373 dev->sysdata = node;
@@ -381,6 +387,8 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,
381 dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn)); 387 dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
382 dev->class = get_int_prop(node, "class-code", 0); 388 dev->class = get_int_prop(node, "class-code", 0);
383 389
390 DBG(" class: 0x%x\n", dev->class);
391
384 dev->current_state = 4; /* unknown power state */ 392 dev->current_state = 4; /* unknown power state */
385 393
386 if (!strcmp(type, "pci")) { 394 if (!strcmp(type, "pci")) {
@@ -402,6 +410,8 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,
402 410
403 pci_parse_of_addrs(node, dev); 411 pci_parse_of_addrs(node, dev);
404 412
413 DBG(" adding to system ...\n");
414
405 pci_device_add(dev, bus); 415 pci_device_add(dev, bus);
406 416
407 /* XXX pci_scan_msi_device(dev); */ 417 /* XXX pci_scan_msi_device(dev); */
@@ -418,15 +428,21 @@ void __devinit of_scan_bus(struct device_node *node,
418 int reglen, devfn; 428 int reglen, devfn;
419 struct pci_dev *dev; 429 struct pci_dev *dev;
420 430
431 DBG("of_scan_bus(%s) bus no %d... \n", node->full_name, bus->number);
432
421 while ((child = of_get_next_child(node, child)) != NULL) { 433 while ((child = of_get_next_child(node, child)) != NULL) {
434 DBG(" * %s\n", child->full_name);
422 reg = (u32 *) get_property(child, "reg", &reglen); 435 reg = (u32 *) get_property(child, "reg", &reglen);
423 if (reg == NULL || reglen < 20) 436 if (reg == NULL || reglen < 20)
424 continue; 437 continue;
425 devfn = (reg[0] >> 8) & 0xff; 438 devfn = (reg[0] >> 8) & 0xff;
439
426 /* create a new pci_dev for this device */ 440 /* create a new pci_dev for this device */
427 dev = of_create_pci_dev(child, bus, devfn); 441 dev = of_create_pci_dev(child, bus, devfn);
428 if (!dev) 442 if (!dev)
429 continue; 443 continue;
444 DBG("dev header type: %x\n", dev->hdr_type);
445
430 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE || 446 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
431 dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) 447 dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
432 of_scan_pci_bridge(child, dev); 448 of_scan_pci_bridge(child, dev);
@@ -446,16 +462,18 @@ void __devinit of_scan_pci_bridge(struct device_node *node,
446 unsigned int flags; 462 unsigned int flags;
447 u64 size; 463 u64 size;
448 464
465 DBG("of_scan_pci_bridge(%s)\n", node->full_name);
466
449 /* parse bus-range property */ 467 /* parse bus-range property */
450 busrange = (u32 *) get_property(node, "bus-range", &len); 468 busrange = (u32 *) get_property(node, "bus-range", &len);
451 if (busrange == NULL || len != 8) { 469 if (busrange == NULL || len != 8) {
452 printk(KERN_ERR "Can't get bus-range for PCI-PCI bridge %s\n", 470 printk(KERN_DEBUG "Can't get bus-range for PCI-PCI bridge %s\n",
453 node->full_name); 471 node->full_name);
454 return; 472 return;
455 } 473 }
456 ranges = (u32 *) get_property(node, "ranges", &len); 474 ranges = (u32 *) get_property(node, "ranges", &len);
457 if (ranges == NULL) { 475 if (ranges == NULL) {
458 printk(KERN_ERR "Can't get ranges for PCI-PCI bridge %s\n", 476 printk(KERN_DEBUG "Can't get ranges for PCI-PCI bridge %s\n",
459 node->full_name); 477 node->full_name);
460 return; 478 return;
461 } 479 }
@@ -509,10 +527,13 @@ void __devinit of_scan_pci_bridge(struct device_node *node,
509 } 527 }
510 sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus), 528 sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),
511 bus->number); 529 bus->number);
530 DBG(" bus name: %s\n", bus->name);
512 531
513 mode = PCI_PROBE_NORMAL; 532 mode = PCI_PROBE_NORMAL;
514 if (ppc_md.pci_probe_mode) 533 if (ppc_md.pci_probe_mode)
515 mode = ppc_md.pci_probe_mode(bus); 534 mode = ppc_md.pci_probe_mode(bus);
535 DBG(" probe mode: %d\n", mode);
536
516 if (mode == PCI_PROBE_DEVTREE) 537 if (mode == PCI_PROBE_DEVTREE)
517 of_scan_bus(node, bus); 538 of_scan_bus(node, bus);
518 else if (mode == PCI_PROBE_NORMAL) 539 else if (mode == PCI_PROBE_NORMAL)
@@ -528,6 +549,8 @@ void __devinit scan_phb(struct pci_controller *hose)
528 int i, mode; 549 int i, mode;
529 struct resource *res; 550 struct resource *res;
530 551
552 DBG("Scanning PHB %s\n", node ? node->full_name : "<NO NAME>");
553
531 bus = pci_create_bus(NULL, hose->first_busno, hose->ops, node); 554 bus = pci_create_bus(NULL, hose->first_busno, hose->ops, node);
532 if (bus == NULL) { 555 if (bus == NULL) {
533 printk(KERN_ERR "Failed to create bus for PCI domain %04x\n", 556 printk(KERN_ERR "Failed to create bus for PCI domain %04x\n",
@@ -552,8 +575,9 @@ void __devinit scan_phb(struct pci_controller *hose)
552 575
553 mode = PCI_PROBE_NORMAL; 576 mode = PCI_PROBE_NORMAL;
554#ifdef CONFIG_PPC_MULTIPLATFORM 577#ifdef CONFIG_PPC_MULTIPLATFORM
555 if (ppc_md.pci_probe_mode) 578 if (node && ppc_md.pci_probe_mode)
556 mode = ppc_md.pci_probe_mode(bus); 579 mode = ppc_md.pci_probe_mode(bus);
580 DBG(" probe mode: %d\n", mode);
557 if (mode == PCI_PROBE_DEVTREE) { 581 if (mode == PCI_PROBE_DEVTREE) {
558 bus->subordinate = hose->last_busno; 582 bus->subordinate = hose->last_busno;
559 of_scan_bus(node, bus); 583 of_scan_bus(node, bus);
@@ -842,8 +866,7 @@ pgprot_t pci_phys_mem_access_prot(struct file *file,
842 * Returns a negative error code on failure, zero on success. 866 * Returns a negative error code on failure, zero on success.
843 */ 867 */
844int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 868int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
845 enum pci_mmap_state mmap_state, 869 enum pci_mmap_state mmap_state, int write_combine)
846 int write_combine)
847{ 870{
848 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; 871 unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
849 struct resource *rp; 872 struct resource *rp;
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 1b97e13657e5..977ee3adaf2d 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -298,6 +298,16 @@ static int __devinit finish_node_interrupts(struct device_node *np,
298 int i, j, n, sense; 298 int i, j, n, sense;
299 unsigned int *irq, virq; 299 unsigned int *irq, virq;
300 struct device_node *ic; 300 struct device_node *ic;
301 int trace = 0;
302
303 //#define TRACE(fmt...) do { if (trace) { printk(fmt); mdelay(1000); } } while(0)
304#define TRACE(fmt...)
305
306 if (!strcmp(np->name, "smu-doorbell"))
307 trace = 1;
308
309 TRACE("Finishing SMU doorbell ! num_interrupt_controllers = %d\n",
310 num_interrupt_controllers);
301 311
302 if (num_interrupt_controllers == 0) { 312 if (num_interrupt_controllers == 0) {
303 /* 313 /*
@@ -332,11 +342,12 @@ static int __devinit finish_node_interrupts(struct device_node *np,
332 } 342 }
333 343
334 ints = (unsigned int *) get_property(np, "interrupts", &intlen); 344 ints = (unsigned int *) get_property(np, "interrupts", &intlen);
345 TRACE("ints=%p, intlen=%d\n", ints, intlen);
335 if (ints == NULL) 346 if (ints == NULL)
336 return 0; 347 return 0;
337 intrcells = prom_n_intr_cells(np); 348 intrcells = prom_n_intr_cells(np);
338 intlen /= intrcells * sizeof(unsigned int); 349 intlen /= intrcells * sizeof(unsigned int);
339 350 TRACE("intrcells=%d, new intlen=%d\n", intrcells, intlen);
340 np->intrs = prom_alloc(intlen * sizeof(*(np->intrs)), mem_start); 351 np->intrs = prom_alloc(intlen * sizeof(*(np->intrs)), mem_start);
341 if (!np->intrs) 352 if (!np->intrs)
342 return -ENOMEM; 353 return -ENOMEM;
@@ -347,6 +358,7 @@ static int __devinit finish_node_interrupts(struct device_node *np,
347 intrcount = 0; 358 intrcount = 0;
348 for (i = 0; i < intlen; ++i, ints += intrcells) { 359 for (i = 0; i < intlen; ++i, ints += intrcells) {
349 n = map_interrupt(&irq, &ic, np, ints, intrcells); 360 n = map_interrupt(&irq, &ic, np, ints, intrcells);
361 TRACE("map, irq=%d, ic=%p, n=%d\n", irq, ic, n);
350 if (n <= 0) 362 if (n <= 0)
351 continue; 363 continue;
352 364
@@ -357,6 +369,7 @@ static int __devinit finish_node_interrupts(struct device_node *np,
357 np->intrs[intrcount].sense = map_isa_senses[sense]; 369 np->intrs[intrcount].sense = map_isa_senses[sense];
358 } else { 370 } else {
359 virq = virt_irq_create_mapping(irq[0]); 371 virq = virt_irq_create_mapping(irq[0]);
372 TRACE("virq=%d\n", virq);
360#ifdef CONFIG_PPC64 373#ifdef CONFIG_PPC64
361 if (virq == NO_IRQ) { 374 if (virq == NO_IRQ) {
362 printk(KERN_CRIT "Could not allocate interrupt" 375 printk(KERN_CRIT "Could not allocate interrupt"
@@ -366,6 +379,12 @@ static int __devinit finish_node_interrupts(struct device_node *np,
366#endif 379#endif
367 np->intrs[intrcount].line = irq_offset_up(virq); 380 np->intrs[intrcount].line = irq_offset_up(virq);
368 sense = (n > 1)? (irq[1] & 3): 1; 381 sense = (n > 1)? (irq[1] & 3): 1;
382
383 /* Apple uses bits in there in a different way, let's
384 * only keep the real sense bit on macs
385 */
386 if (_machine == PLATFORM_POWERMAC)
387 sense &= 0x1;
369 np->intrs[intrcount].sense = map_mpic_senses[sense]; 388 np->intrs[intrcount].sense = map_mpic_senses[sense];
370 } 389 }
371 390
@@ -375,12 +394,13 @@ static int __devinit finish_node_interrupts(struct device_node *np,
375 char *name = get_property(ic->parent, "name", NULL); 394 char *name = get_property(ic->parent, "name", NULL);
376 if (name && !strcmp(name, "u3")) 395 if (name && !strcmp(name, "u3"))
377 np->intrs[intrcount].line += 128; 396 np->intrs[intrcount].line += 128;
378 else if (!(name && !strcmp(name, "mac-io"))) 397 else if (!(name && (!strcmp(name, "mac-io") ||
398 !strcmp(name, "u4"))))
379 /* ignore other cascaded controllers, such as 399 /* ignore other cascaded controllers, such as
380 the k2-sata-root */ 400 the k2-sata-root */
381 break; 401 break;
382 } 402 }
383#endif 403#endif /* CONFIG_PPC64 */
384 if (n > 2) { 404 if (n > 2) {
385 printk("hmmm, got %d intr cells for %s:", n, 405 printk("hmmm, got %d intr cells for %s:", n,
386 np->full_name); 406 np->full_name);
diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c
index a058285a70e7..9567d9474c80 100644
--- a/arch/powerpc/kernel/udbg.c
+++ b/arch/powerpc/kernel/udbg.c
@@ -110,10 +110,12 @@ static int early_console_initialized;
110 110
111void __init disable_early_printk(void) 111void __init disable_early_printk(void)
112{ 112{
113#if 1
113 if (!early_console_initialized) 114 if (!early_console_initialized)
114 return; 115 return;
115 unregister_console(&udbg_console); 116 unregister_console(&udbg_console);
116 early_console_initialized = 0; 117 early_console_initialized = 0;
118#endif
117} 119}
118 120
119/* called by setup_system */ 121/* called by setup_system */
diff --git a/arch/powerpc/platforms/maple/setup.c b/arch/powerpc/platforms/maple/setup.c
index 65fe4c166a68..dd73e38bfb7d 100644
--- a/arch/powerpc/platforms/maple/setup.c
+++ b/arch/powerpc/platforms/maple/setup.c
@@ -195,7 +195,7 @@ static void __init maple_init_early(void)
195 /* Setup interrupt mapping options */ 195 /* Setup interrupt mapping options */
196 ppc64_interrupt_controller = IC_OPEN_PIC; 196 ppc64_interrupt_controller = IC_OPEN_PIC;
197 197
198 iommu_init_early_u3(); 198 iommu_init_early_dart();
199 199
200 DBG(" <- maple_init_early\n"); 200 DBG(" <- maple_init_early\n");
201} 201}
@@ -257,7 +257,7 @@ static int __init maple_probe(int platform)
257 * occupies having to be broken up so the DART itself is not 257 * occupies having to be broken up so the DART itself is not
258 * part of the cacheable linar mapping 258 * part of the cacheable linar mapping
259 */ 259 */
260 alloc_u3_dart_table(); 260 alloc_dart_table();
261 261
262 return 1; 262 return 1;
263} 263}
diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index b1f896952b1b..d2915d64d45e 100644
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -101,7 +101,8 @@ static const char *macio_names[] =
101 "Keylargo", 101 "Keylargo",
102 "Pangea", 102 "Pangea",
103 "Intrepid", 103 "Intrepid",
104 "K2" 104 "K2",
105 "Shasta",
105}; 106};
106 107
107 108
@@ -119,7 +120,7 @@ static const char *macio_names[] =
119static struct device_node *uninorth_node; 120static struct device_node *uninorth_node;
120static u32 __iomem *uninorth_base; 121static u32 __iomem *uninorth_base;
121static u32 uninorth_rev; 122static u32 uninorth_rev;
122static int uninorth_u3; 123static int uninorth_maj;
123static void __iomem *u3_ht; 124static void __iomem *u3_ht;
124 125
125/* 126/*
@@ -1399,8 +1400,15 @@ static long g5_fw_enable(struct device_node *node, long param, long value)
1399static long g5_mpic_enable(struct device_node *node, long param, long value) 1400static long g5_mpic_enable(struct device_node *node, long param, long value)
1400{ 1401{
1401 unsigned long flags; 1402 unsigned long flags;
1403 struct device_node *parent = of_get_parent(node);
1404 int is_u3;
1402 1405
1403 if (node->parent == NULL || strcmp(node->parent->name, "u3")) 1406 if (parent == NULL)
1407 return 0;
1408 is_u3 = strcmp(parent->name, "u3") == 0 ||
1409 strcmp(parent->name, "u4") == 0;
1410 of_node_put(parent);
1411 if (!is_u3)
1404 return 0; 1412 return 0;
1405 1413
1406 LOCK(flags); 1414 LOCK(flags);
@@ -1464,7 +1472,7 @@ static long g5_i2s_enable(struct device_node *node, long param, long value)
1464 }, 1472 },
1465 }; 1473 };
1466 1474
1467 if (macio->type != macio_keylargo2 /* && macio->type != macio_shasta*/) 1475 if (macio->type != macio_keylargo2 && macio->type != macio_shasta)
1468 return -ENODEV; 1476 return -ENODEV;
1469 if (strncmp(node->name, "i2s-", 4)) 1477 if (strncmp(node->name, "i2s-", 4))
1470 return -ENODEV; 1478 return -ENODEV;
@@ -1473,11 +1481,9 @@ static long g5_i2s_enable(struct device_node *node, long param, long value)
1473 case 0: 1481 case 0:
1474 case 1: 1482 case 1:
1475 break; 1483 break;
1476#if 0
1477 case 2: 1484 case 2:
1478 if (macio->type == macio_shasta) 1485 if (macio->type == macio_shasta)
1479 break; 1486 break;
1480#endif
1481 default: 1487 default:
1482 return -ENODEV; 1488 return -ENODEV;
1483 } 1489 }
@@ -1508,7 +1514,7 @@ static long g5_reset_cpu(struct device_node *node, long param, long value)
1508 struct device_node *np; 1514 struct device_node *np;
1509 1515
1510 macio = &macio_chips[0]; 1516 macio = &macio_chips[0];
1511 if (macio->type != macio_keylargo2) 1517 if (macio->type != macio_keylargo2 && macio->type != macio_shasta)
1512 return -ENODEV; 1518 return -ENODEV;
1513 1519
1514 np = find_path_device("/cpus"); 1520 np = find_path_device("/cpus");
@@ -1547,7 +1553,8 @@ static long g5_reset_cpu(struct device_node *node, long param, long value)
1547 */ 1553 */
1548void g5_phy_disable_cpu1(void) 1554void g5_phy_disable_cpu1(void)
1549{ 1555{
1550 UN_OUT(U3_API_PHY_CONFIG_1, 0); 1556 if (uninorth_maj == 3)
1557 UN_OUT(U3_API_PHY_CONFIG_1, 0);
1551} 1558}
1552#endif /* CONFIG_POWER4 */ 1559#endif /* CONFIG_POWER4 */
1553 1560
@@ -2462,6 +2469,14 @@ static struct pmac_mb_def pmac_mb_defs[] = {
2462 PMAC_TYPE_POWERMAC_G5_U3L, g5_features, 2469 PMAC_TYPE_POWERMAC_G5_U3L, g5_features,
2463 0, 2470 0,
2464 }, 2471 },
2472 { "PowerMac11,2", "PowerMac G5 Dual Core",
2473 PMAC_TYPE_POWERMAC_G5_U3L, g5_features,
2474 0,
2475 },
2476 { "PowerMac12,1", "iMac G5 (iSight)",
2477 PMAC_TYPE_POWERMAC_G5_U3L, g5_features,
2478 0,
2479 },
2465 { "RackMac3,1", "XServe G5", 2480 { "RackMac3,1", "XServe G5",
2466 PMAC_TYPE_XSERVE_G5, g5_features, 2481 PMAC_TYPE_XSERVE_G5, g5_features,
2467 0, 2482 0,
@@ -2574,6 +2589,11 @@ static int __init probe_motherboard(void)
2574 pmac_mb.model_name = "Unknown K2-based"; 2589 pmac_mb.model_name = "Unknown K2-based";
2575 pmac_mb.features = g5_features; 2590 pmac_mb.features = g5_features;
2576 break; 2591 break;
2592 case macio_shasta:
2593 pmac_mb.model_id = PMAC_TYPE_UNKNOWN_SHASTA;
2594 pmac_mb.model_name = "Unknown Shasta-based";
2595 pmac_mb.features = g5_features;
2596 break;
2577#endif /* CONFIG_POWER4 */ 2597#endif /* CONFIG_POWER4 */
2578 default: 2598 default:
2579 return -ENODEV; 2599 return -ENODEV;
@@ -2651,7 +2671,12 @@ static void __init probe_uninorth(void)
2651 /* Locate G5 u3 */ 2671 /* Locate G5 u3 */
2652 if (uninorth_node == NULL) { 2672 if (uninorth_node == NULL) {
2653 uninorth_node = of_find_node_by_name(NULL, "u3"); 2673 uninorth_node = of_find_node_by_name(NULL, "u3");
2654 uninorth_u3 = 1; 2674 uninorth_maj = 3;
2675 }
2676 /* Locate G5 u4 */
2677 if (uninorth_node == NULL) {
2678 uninorth_node = of_find_node_by_name(NULL, "u4");
2679 uninorth_maj = 4;
2655 } 2680 }
2656 if (uninorth_node == NULL) 2681 if (uninorth_node == NULL)
2657 return; 2682 return;
@@ -2664,12 +2689,13 @@ static void __init probe_uninorth(void)
2664 return; 2689 return;
2665 uninorth_base = ioremap(address, 0x40000); 2690 uninorth_base = ioremap(address, 0x40000);
2666 uninorth_rev = in_be32(UN_REG(UNI_N_VERSION)); 2691 uninorth_rev = in_be32(UN_REG(UNI_N_VERSION));
2667 if (uninorth_u3) 2692 if (uninorth_maj == 3 || uninorth_maj == 4)
2668 u3_ht = ioremap(address + U3_HT_CONFIG_BASE, 0x1000); 2693 u3_ht = ioremap(address + U3_HT_CONFIG_BASE, 0x1000);
2669 2694
2670 printk(KERN_INFO "Found %s memory controller & host bridge," 2695 printk(KERN_INFO "Found %s memory controller & host bridge"
2671 " revision: %d\n", uninorth_u3 ? "U3" : "UniNorth", 2696 " @ 0x%08x revision: 0x%02x\n", uninorth_maj == 3 ? "U3" :
2672 uninorth_rev); 2697 uninorth_maj == 4 ? "U4" : "UniNorth",
2698 (unsigned int)address, uninorth_rev);
2673 printk(KERN_INFO "Mapped at 0x%08lx\n", (unsigned long)uninorth_base); 2699 printk(KERN_INFO "Mapped at 0x%08lx\n", (unsigned long)uninorth_base);
2674 2700
2675 /* Set the arbitrer QAck delay according to what Apple does 2701 /* Set the arbitrer QAck delay according to what Apple does
@@ -2677,7 +2703,8 @@ static void __init probe_uninorth(void)
2677 if (uninorth_rev < 0x11) { 2703 if (uninorth_rev < 0x11) {
2678 actrl = UN_IN(UNI_N_ARB_CTRL) & ~UNI_N_ARB_CTRL_QACK_DELAY_MASK; 2704 actrl = UN_IN(UNI_N_ARB_CTRL) & ~UNI_N_ARB_CTRL_QACK_DELAY_MASK;
2679 actrl |= ((uninorth_rev < 3) ? UNI_N_ARB_CTRL_QACK_DELAY105 : 2705 actrl |= ((uninorth_rev < 3) ? UNI_N_ARB_CTRL_QACK_DELAY105 :
2680 UNI_N_ARB_CTRL_QACK_DELAY) << UNI_N_ARB_CTRL_QACK_DELAY_SHIFT; 2706 UNI_N_ARB_CTRL_QACK_DELAY) <<
2707 UNI_N_ARB_CTRL_QACK_DELAY_SHIFT;
2681 UN_OUT(UNI_N_ARB_CTRL, actrl); 2708 UN_OUT(UNI_N_ARB_CTRL, actrl);
2682 } 2709 }
2683 2710
@@ -2685,7 +2712,8 @@ static void __init probe_uninorth(void)
2685 * revs 1.5 to 2.O and Pangea. Seem to toggle the UniN Maxbus/PCI 2712 * revs 1.5 to 2.O and Pangea. Seem to toggle the UniN Maxbus/PCI
2686 * memory timeout 2713 * memory timeout
2687 */ 2714 */
2688 if ((uninorth_rev >= 0x11 && uninorth_rev <= 0x24) || uninorth_rev == 0xc0) 2715 if ((uninorth_rev >= 0x11 && uninorth_rev <= 0x24) ||
2716 uninorth_rev == 0xc0)
2689 UN_OUT(0x2160, UN_IN(0x2160) & 0x00ffffff); 2717 UN_OUT(0x2160, UN_IN(0x2160) & 0x00ffffff);
2690} 2718}
2691 2719
@@ -2736,12 +2764,14 @@ static void __init probe_one_macio(const char *name, const char *compat, int typ
2736 node->full_name); 2764 node->full_name);
2737 return; 2765 return;
2738 } 2766 }
2739 if (type == macio_keylargo) { 2767 if (type == macio_keylargo || type == macio_keylargo2) {
2740 u32 *did = (u32 *)get_property(node, "device-id", NULL); 2768 u32 *did = (u32 *)get_property(node, "device-id", NULL);
2741 if (*did == 0x00000025) 2769 if (*did == 0x00000025)
2742 type = macio_pangea; 2770 type = macio_pangea;
2743 if (*did == 0x0000003e) 2771 if (*did == 0x0000003e)
2744 type = macio_intrepid; 2772 type = macio_intrepid;
2773 if (*did == 0x0000004f)
2774 type = macio_shasta;
2745 } 2775 }
2746 macio_chips[i].of_node = node; 2776 macio_chips[i].of_node = node;
2747 macio_chips[i].type = type; 2777 macio_chips[i].type = type;
@@ -2840,7 +2870,8 @@ set_initial_features(void)
2840 } 2870 }
2841 2871
2842#ifdef CONFIG_POWER4 2872#ifdef CONFIG_POWER4
2843 if (macio_chips[0].type == macio_keylargo2) { 2873 if (macio_chips[0].type == macio_keylargo2 ||
2874 macio_chips[0].type == macio_shasta) {
2844#ifndef CONFIG_SMP 2875#ifndef CONFIG_SMP
2845 /* On SMP machines running UP, we have the second CPU eating 2876 /* On SMP machines running UP, we have the second CPU eating
2846 * bus cycles. We need to take it off the bus. This is done 2877 * bus cycles. We need to take it off the bus. This is done
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index 5aab261075de..f671ed253901 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -1,7 +1,7 @@
1/* 1/*
2 * Support for PCI bridges found on Power Macintoshes. 2 * Support for PCI bridges found on Power Macintoshes.
3 * 3 *
4 * Copyright (C) 2003 Benjamin Herrenschmuidt (benh@kernel.crashing.org) 4 * Copyright (C) 2003-2005 Benjamin Herrenschmuidt (benh@kernel.crashing.org)
5 * Copyright (C) 1997 Paul Mackerras (paulus@samba.org) 5 * Copyright (C) 1997 Paul Mackerras (paulus@samba.org)
6 * 6 *
7 * This program is free software; you can redistribute it and/or 7 * This program is free software; you can redistribute it and/or
@@ -25,7 +25,7 @@
25#include <asm/pmac_feature.h> 25#include <asm/pmac_feature.h>
26#include <asm/grackle.h> 26#include <asm/grackle.h>
27#ifdef CONFIG_PPC64 27#ifdef CONFIG_PPC64
28#include <asm/iommu.h> 28//#include <asm/iommu.h>
29#include <asm/ppc-pci.h> 29#include <asm/ppc-pci.h>
30#endif 30#endif
31 31
@@ -44,6 +44,7 @@ static int add_bridge(struct device_node *dev);
44static int has_uninorth; 44static int has_uninorth;
45#ifdef CONFIG_PPC64 45#ifdef CONFIG_PPC64
46static struct pci_controller *u3_agp; 46static struct pci_controller *u3_agp;
47static struct pci_controller *u4_pcie;
47static struct pci_controller *u3_ht; 48static struct pci_controller *u3_ht;
48#endif /* CONFIG_PPC64 */ 49#endif /* CONFIG_PPC64 */
49 50
@@ -97,11 +98,8 @@ static void __init fixup_bus_range(struct device_node *bridge)
97 98
98 /* Lookup the "bus-range" property for the hose */ 99 /* Lookup the "bus-range" property for the hose */
99 bus_range = (int *) get_property(bridge, "bus-range", &len); 100 bus_range = (int *) get_property(bridge, "bus-range", &len);
100 if (bus_range == NULL || len < 2 * sizeof(int)) { 101 if (bus_range == NULL || len < 2 * sizeof(int))
101 printk(KERN_WARNING "Can't get bus-range for %s\n",
102 bridge->full_name);
103 return; 102 return;
104 }
105 bus_range[1] = fixup_one_level_bus_range(bridge->child, bus_range[1]); 103 bus_range[1] = fixup_one_level_bus_range(bridge->child, bus_range[1]);
106} 104}
107 105
@@ -128,14 +126,14 @@ static void __init fixup_bus_range(struct device_node *bridge)
128 */ 126 */
129 127
130#define MACRISC_CFA0(devfn, off) \ 128#define MACRISC_CFA0(devfn, off) \
131 ((1 << (unsigned long)PCI_SLOT(dev_fn)) \ 129 ((1 << (unsigned int)PCI_SLOT(dev_fn)) \
132 | (((unsigned long)PCI_FUNC(dev_fn)) << 8) \ 130 | (((unsigned int)PCI_FUNC(dev_fn)) << 8) \
133 | (((unsigned long)(off)) & 0xFCUL)) 131 | (((unsigned int)(off)) & 0xFCUL))
134 132
135#define MACRISC_CFA1(bus, devfn, off) \ 133#define MACRISC_CFA1(bus, devfn, off) \
136 ((((unsigned long)(bus)) << 16) \ 134 ((((unsigned int)(bus)) << 16) \
137 |(((unsigned long)(devfn)) << 8) \ 135 |(((unsigned int)(devfn)) << 8) \
138 |(((unsigned long)(off)) & 0xFCUL) \ 136 |(((unsigned int)(off)) & 0xFCUL) \
139 |1UL) 137 |1UL)
140 138
141static unsigned long macrisc_cfg_access(struct pci_controller* hose, 139static unsigned long macrisc_cfg_access(struct pci_controller* hose,
@@ -168,7 +166,8 @@ static int macrisc_read_config(struct pci_bus *bus, unsigned int devfn,
168 hose = pci_bus_to_host(bus); 166 hose = pci_bus_to_host(bus);
169 if (hose == NULL) 167 if (hose == NULL)
170 return PCIBIOS_DEVICE_NOT_FOUND; 168 return PCIBIOS_DEVICE_NOT_FOUND;
171 169 if (offset >= 0x100)
170 return PCIBIOS_BAD_REGISTER_NUMBER;
172 addr = macrisc_cfg_access(hose, bus->number, devfn, offset); 171 addr = macrisc_cfg_access(hose, bus->number, devfn, offset);
173 if (!addr) 172 if (!addr)
174 return PCIBIOS_DEVICE_NOT_FOUND; 173 return PCIBIOS_DEVICE_NOT_FOUND;
@@ -199,7 +198,8 @@ static int macrisc_write_config(struct pci_bus *bus, unsigned int devfn,
199 hose = pci_bus_to_host(bus); 198 hose = pci_bus_to_host(bus);
200 if (hose == NULL) 199 if (hose == NULL)
201 return PCIBIOS_DEVICE_NOT_FOUND; 200 return PCIBIOS_DEVICE_NOT_FOUND;
202 201 if (offset >= 0x100)
202 return PCIBIOS_BAD_REGISTER_NUMBER;
203 addr = macrisc_cfg_access(hose, bus->number, devfn, offset); 203 addr = macrisc_cfg_access(hose, bus->number, devfn, offset);
204 if (!addr) 204 if (!addr)
205 return PCIBIOS_DEVICE_NOT_FOUND; 205 return PCIBIOS_DEVICE_NOT_FOUND;
@@ -234,12 +234,13 @@ static struct pci_ops macrisc_pci_ops =
234/* 234/*
235 * Verify that a specific (bus, dev_fn) exists on chaos 235 * Verify that a specific (bus, dev_fn) exists on chaos
236 */ 236 */
237static int 237static int chaos_validate_dev(struct pci_bus *bus, int devfn, int offset)
238chaos_validate_dev(struct pci_bus *bus, int devfn, int offset)
239{ 238{
240 struct device_node *np; 239 struct device_node *np;
241 u32 *vendor, *device; 240 u32 *vendor, *device;
242 241
242 if (offset >= 0x100)
243 return PCIBIOS_BAD_REGISTER_NUMBER;
243 np = pci_busdev_to_OF_node(bus, devfn); 244 np = pci_busdev_to_OF_node(bus, devfn);
244 if (np == NULL) 245 if (np == NULL)
245 return PCIBIOS_DEVICE_NOT_FOUND; 246 return PCIBIOS_DEVICE_NOT_FOUND;
@@ -341,10 +342,10 @@ static int u3_ht_skip_device(struct pci_controller *hose,
341} 342}
342 343
343#define U3_HT_CFA0(devfn, off) \ 344#define U3_HT_CFA0(devfn, off) \
344 ((((unsigned long)devfn) << 8) | offset) 345 ((((unsigned int)devfn) << 8) | offset)
345#define U3_HT_CFA1(bus, devfn, off) \ 346#define U3_HT_CFA1(bus, devfn, off) \
346 (U3_HT_CFA0(devfn, off) \ 347 (U3_HT_CFA0(devfn, off) \
347 + (((unsigned long)bus) << 16) \ 348 + (((unsigned int)bus) << 16) \
348 + 0x01000000UL) 349 + 0x01000000UL)
349 350
350static unsigned long u3_ht_cfg_access(struct pci_controller* hose, 351static unsigned long u3_ht_cfg_access(struct pci_controller* hose,
@@ -370,7 +371,8 @@ static int u3_ht_read_config(struct pci_bus *bus, unsigned int devfn,
370 hose = pci_bus_to_host(bus); 371 hose = pci_bus_to_host(bus);
371 if (hose == NULL) 372 if (hose == NULL)
372 return PCIBIOS_DEVICE_NOT_FOUND; 373 return PCIBIOS_DEVICE_NOT_FOUND;
373 374 if (offset >= 0x100)
375 return PCIBIOS_BAD_REGISTER_NUMBER;
374 addr = u3_ht_cfg_access(hose, bus->number, devfn, offset); 376 addr = u3_ht_cfg_access(hose, bus->number, devfn, offset);
375 if (!addr) 377 if (!addr)
376 return PCIBIOS_DEVICE_NOT_FOUND; 378 return PCIBIOS_DEVICE_NOT_FOUND;
@@ -419,7 +421,8 @@ static int u3_ht_write_config(struct pci_bus *bus, unsigned int devfn,
419 hose = pci_bus_to_host(bus); 421 hose = pci_bus_to_host(bus);
420 if (hose == NULL) 422 if (hose == NULL)
421 return PCIBIOS_DEVICE_NOT_FOUND; 423 return PCIBIOS_DEVICE_NOT_FOUND;
422 424 if (offset >= 0x100)
425 return PCIBIOS_BAD_REGISTER_NUMBER;
423 addr = u3_ht_cfg_access(hose, bus->number, devfn, offset); 426 addr = u3_ht_cfg_access(hose, bus->number, devfn, offset);
424 if (!addr) 427 if (!addr)
425 return PCIBIOS_DEVICE_NOT_FOUND; 428 return PCIBIOS_DEVICE_NOT_FOUND;
@@ -459,6 +462,112 @@ static struct pci_ops u3_ht_pci_ops =
459 u3_ht_read_config, 462 u3_ht_read_config,
460 u3_ht_write_config 463 u3_ht_write_config
461}; 464};
465
466#define U4_PCIE_CFA0(devfn, off) \
467 ((1 << ((unsigned int)PCI_SLOT(dev_fn))) \
468 | (((unsigned int)PCI_FUNC(dev_fn)) << 8) \
469 | ((((unsigned int)(off)) >> 8) << 28) \
470 | (((unsigned int)(off)) & 0xfcU))
471
472#define U4_PCIE_CFA1(bus, devfn, off) \
473 ((((unsigned int)(bus)) << 16) \
474 |(((unsigned int)(devfn)) << 8) \
475 | ((((unsigned int)(off)) >> 8) << 28) \
476 |(((unsigned int)(off)) & 0xfcU) \
477 |1UL)
478
479static unsigned long u4_pcie_cfg_access(struct pci_controller* hose,
480 u8 bus, u8 dev_fn, int offset)
481{
482 unsigned int caddr;
483
484 if (bus == hose->first_busno) {
485 caddr = U4_PCIE_CFA0(dev_fn, offset);
486 } else
487 caddr = U4_PCIE_CFA1(bus, dev_fn, offset);
488
489 /* Uninorth will return garbage if we don't read back the value ! */
490 do {
491 out_le32(hose->cfg_addr, caddr);
492 } while (in_le32(hose->cfg_addr) != caddr);
493
494 offset &= 0x03;
495 return ((unsigned long)hose->cfg_data) + offset;
496}
497
498static int u4_pcie_read_config(struct pci_bus *bus, unsigned int devfn,
499 int offset, int len, u32 *val)
500{
501 struct pci_controller *hose;
502 unsigned long addr;
503
504 hose = pci_bus_to_host(bus);
505 if (hose == NULL)
506 return PCIBIOS_DEVICE_NOT_FOUND;
507 if (offset >= 0x1000)
508 return PCIBIOS_BAD_REGISTER_NUMBER;
509 addr = u4_pcie_cfg_access(hose, bus->number, devfn, offset);
510 if (!addr)
511 return PCIBIOS_DEVICE_NOT_FOUND;
512 /*
513 * Note: the caller has already checked that offset is
514 * suitably aligned and that len is 1, 2 or 4.
515 */
516 switch (len) {
517 case 1:
518 *val = in_8((u8 *)addr);
519 break;
520 case 2:
521 *val = in_le16((u16 *)addr);
522 break;
523 default:
524 *val = in_le32((u32 *)addr);
525 break;
526 }
527 return PCIBIOS_SUCCESSFUL;
528}
529
530static int u4_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
531 int offset, int len, u32 val)
532{
533 struct pci_controller *hose;
534 unsigned long addr;
535
536 hose = pci_bus_to_host(bus);
537 if (hose == NULL)
538 return PCIBIOS_DEVICE_NOT_FOUND;
539 if (offset >= 0x1000)
540 return PCIBIOS_BAD_REGISTER_NUMBER;
541 addr = u4_pcie_cfg_access(hose, bus->number, devfn, offset);
542 if (!addr)
543 return PCIBIOS_DEVICE_NOT_FOUND;
544 /*
545 * Note: the caller has already checked that offset is
546 * suitably aligned and that len is 1, 2 or 4.
547 */
548 switch (len) {
549 case 1:
550 out_8((u8 *)addr, val);
551 (void) in_8((u8 *)addr);
552 break;
553 case 2:
554 out_le16((u16 *)addr, val);
555 (void) in_le16((u16 *)addr);
556 break;
557 default:
558 out_le32((u32 *)addr, val);
559 (void) in_le32((u32 *)addr);
560 break;
561 }
562 return PCIBIOS_SUCCESSFUL;
563}
564
565static struct pci_ops u4_pcie_pci_ops =
566{
567 u4_pcie_read_config,
568 u4_pcie_write_config
569};
570
462#endif /* CONFIG_PPC64 */ 571#endif /* CONFIG_PPC64 */
463 572
464#ifdef CONFIG_PPC32 573#ifdef CONFIG_PPC32
@@ -628,15 +737,36 @@ static void __init setup_u3_agp(struct pci_controller* hose)
628 hose->ops = &macrisc_pci_ops; 737 hose->ops = &macrisc_pci_ops;
629 hose->cfg_addr = ioremap(0xf0000000 + 0x800000, 0x1000); 738 hose->cfg_addr = ioremap(0xf0000000 + 0x800000, 0x1000);
630 hose->cfg_data = ioremap(0xf0000000 + 0xc00000, 0x1000); 739 hose->cfg_data = ioremap(0xf0000000 + 0xc00000, 0x1000);
631
632 u3_agp = hose; 740 u3_agp = hose;
633} 741}
634 742
743static void __init setup_u4_pcie(struct pci_controller* hose)
744{
745 /* We currently only implement the "non-atomic" config space, to
746 * be optimised later.
747 */
748 hose->ops = &u4_pcie_pci_ops;
749 hose->cfg_addr = ioremap(0xf0000000 + 0x800000, 0x1000);
750 hose->cfg_data = ioremap(0xf0000000 + 0xc00000, 0x1000);
751
752 /* The bus contains a bridge from root -> device, we need to
753 * make it visible on bus 0 so that we pick the right type
754 * of config cycles. If we didn't, we would have to force all
755 * config cycles to be type 1. So we override the "bus-range"
756 * property here
757 */
758 hose->first_busno = 0x00;
759 hose->last_busno = 0xff;
760 u4_pcie = hose;
761}
762
635static void __init setup_u3_ht(struct pci_controller* hose) 763static void __init setup_u3_ht(struct pci_controller* hose)
636{ 764{
637 struct device_node *np = (struct device_node *)hose->arch_data; 765 struct device_node *np = (struct device_node *)hose->arch_data;
766 struct pci_controller *other = NULL;
638 int i, cur; 767 int i, cur;
639 768
769
640 hose->ops = &u3_ht_pci_ops; 770 hose->ops = &u3_ht_pci_ops;
641 771
642 /* We hard code the address because of the different size of 772 /* We hard code the address because of the different size of
@@ -670,11 +800,20 @@ static void __init setup_u3_ht(struct pci_controller* hose)
670 800
671 u3_ht = hose; 801 u3_ht = hose;
672 802
673 if (u3_agp == NULL) { 803 if (u3_agp != NULL)
674 DBG("U3 has no AGP, using full resource range\n"); 804 other = u3_agp;
805 else if (u4_pcie != NULL)
806 other = u4_pcie;
807
808 if (other == NULL) {
809 DBG("U3/4 has no AGP/PCIE, using full resource range\n");
675 return; 810 return;
676 } 811 }
677 812
813 /* Fixup bus range vs. PCIE */
814 if (u4_pcie)
815 hose->last_busno = u4_pcie->first_busno - 1;
816
678 /* We "remove" the AGP resources from the resources allocated to HT, 817 /* We "remove" the AGP resources from the resources allocated to HT,
679 * that is we create "holes". However, that code does assumptions 818 * that is we create "holes". However, that code does assumptions
680 * that so far happen to be true (cross fingers...), typically that 819 * that so far happen to be true (cross fingers...), typically that
@@ -682,7 +821,7 @@ static void __init setup_u3_ht(struct pci_controller* hose)
682 */ 821 */
683 cur = 0; 822 cur = 0;
684 for (i=0; i<3; i++) { 823 for (i=0; i<3; i++) {
685 struct resource *res = &u3_agp->mem_resources[i]; 824 struct resource *res = &other->mem_resources[i];
686 if (res->flags != IORESOURCE_MEM) 825 if (res->flags != IORESOURCE_MEM)
687 continue; 826 continue;
688 /* We don't care about "fine" resources */ 827 /* We don't care about "fine" resources */
@@ -777,9 +916,13 @@ static int __init add_bridge(struct device_node *dev)
777 setup_u3_ht(hose); 916 setup_u3_ht(hose);
778 disp_name = "U3-HT"; 917 disp_name = "U3-HT";
779 primary = 1; 918 primary = 1;
919 } else if (device_is_compatible(dev, "u4-pcie")) {
920 setup_u4_pcie(hose);
921 disp_name = "U4-PCIE";
922 primary = 0;
780 } 923 }
781 printk(KERN_INFO "Found %s PCI host bridge. Firmware bus number: %d->%d\n", 924 printk(KERN_INFO "Found %s PCI host bridge. Firmware bus number:"
782 disp_name, hose->first_busno, hose->last_busno); 925 " %d->%d\n", disp_name, hose->first_busno, hose->last_busno);
783#endif /* CONFIG_PPC64 */ 926#endif /* CONFIG_PPC64 */
784 927
785 /* 32 bits only bridges */ 928 /* 32 bits only bridges */
@@ -900,6 +1043,8 @@ void __init pmac_pci_init(void)
900 pci_setup_phb_io(u3_ht, 1); 1043 pci_setup_phb_io(u3_ht, 1);
901 if (u3_agp) 1044 if (u3_agp)
902 pci_setup_phb_io(u3_agp, 0); 1045 pci_setup_phb_io(u3_agp, 0);
1046 if (u4_pcie)
1047 pci_setup_phb_io(u4_pcie, 0);
903 1048
904 /* 1049 /*
905 * On ppc64, fixup the IO resources on our host bridges as 1050 * On ppc64, fixup the IO resources on our host bridges as
@@ -912,7 +1057,8 @@ void __init pmac_pci_init(void)
912 1057
913 /* Fixup the PCI<->OF mapping for U3 AGP due to bus renumbering. We 1058 /* Fixup the PCI<->OF mapping for U3 AGP due to bus renumbering. We
914 * assume there is no P2P bridge on the AGP bus, which should be a 1059 * assume there is no P2P bridge on the AGP bus, which should be a
915 * safe assumptions hopefully. 1060 * safe assumptions for now. We should do something better in the
1061 * future though
916 */ 1062 */
917 if (u3_agp) { 1063 if (u3_agp) {
918 struct device_node *np = u3_agp->arch_data; 1064 struct device_node *np = u3_agp->arch_data;
@@ -920,7 +1066,6 @@ void __init pmac_pci_init(void)
920 for (np = np->child; np; np = np->sibling) 1066 for (np = np->child; np; np = np->sibling)
921 PCI_DN(np)->busno = 0xf0; 1067 PCI_DN(np)->busno = 0xf0;
922 } 1068 }
923
924 /* pmac_check_ht_link(); */ 1069 /* pmac_check_ht_link(); */
925 1070
926 /* Tell pci.c to not use the common resource allocation mechanism */ 1071 /* Tell pci.c to not use the common resource allocation mechanism */
@@ -1127,7 +1272,8 @@ void pmac_pci_fixup_pciata(struct pci_dev* dev)
1127 good: 1272 good:
1128 pci_read_config_byte(dev, PCI_CLASS_PROG, &progif); 1273 pci_read_config_byte(dev, PCI_CLASS_PROG, &progif);
1129 if ((progif & 5) != 5) { 1274 if ((progif & 5) != 5) {
1130 printk(KERN_INFO "Forcing PCI IDE into native mode: %s\n", pci_name(dev)); 1275 printk(KERN_INFO "Forcing PCI IDE into native mode: %s\n",
1276 pci_name(dev));
1131 (void) pci_write_config_byte(dev, PCI_CLASS_PROG, progif|5); 1277 (void) pci_write_config_byte(dev, PCI_CLASS_PROG, progif|5);
1132 if (pci_read_config_byte(dev, PCI_CLASS_PROG, &progif) || 1278 if (pci_read_config_byte(dev, PCI_CLASS_PROG, &progif) ||
1133 (progif & 5) != 5) 1279 (progif & 5) != 5)
@@ -1153,7 +1299,8 @@ static void fixup_k2_sata(struct pci_dev* dev)
1153 for (i = 0; i < 6; i++) { 1299 for (i = 0; i < 6; i++) {
1154 dev->resource[i].start = dev->resource[i].end = 0; 1300 dev->resource[i].start = dev->resource[i].end = 0;
1155 dev->resource[i].flags = 0; 1301 dev->resource[i].flags = 0;
1156 pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + 4 * i, 0); 1302 pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + 4 * i,
1303 0);
1157 } 1304 }
1158 } else { 1305 } else {
1159 pci_read_config_word(dev, PCI_COMMAND, &cmd); 1306 pci_read_config_word(dev, PCI_COMMAND, &cmd);
@@ -1162,7 +1309,8 @@ static void fixup_k2_sata(struct pci_dev* dev)
1162 for (i = 0; i < 5; i++) { 1309 for (i = 0; i < 5; i++) {
1163 dev->resource[i].start = dev->resource[i].end = 0; 1310 dev->resource[i].start = dev->resource[i].end = 0;
1164 dev->resource[i].flags = 0; 1311 dev->resource[i].flags = 0;
1165 pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + 4 * i, 0); 1312 pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + 4 * i,
1313 0);
1166 } 1314 }
1167 } 1315 }
1168} 1316}
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index dbb524a851aa..18bf3011d1e3 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -524,18 +524,56 @@ static void __init pmac_pic_setup_mpic_nmi(struct mpic *mpic)
524#endif /* defined(CONFIG_XMON) && defined(CONFIG_PPC32) */ 524#endif /* defined(CONFIG_XMON) && defined(CONFIG_PPC32) */
525} 525}
526 526
527static struct mpic * __init pmac_setup_one_mpic(struct device_node *np,
528 int master)
529{
530 unsigned char senses[128];
531 int offset = master ? 0 : 128;
532 int count = master ? 128 : 124;
533 const char *name = master ? " MPIC 1 " : " MPIC 2 ";
534 struct resource r;
535 struct mpic *mpic;
536 unsigned int flags = master ? MPIC_PRIMARY : 0;
537 int rc;
538
539 rc = of_address_to_resource(np, 0, &r);
540 if (rc)
541 return NULL;
542
543 pmac_call_feature(PMAC_FTR_ENABLE_MPIC, np, 0, 0);
544
545 prom_get_irq_senses(senses, offset, offset + count);
546
547 flags |= MPIC_WANTS_RESET;
548 if (get_property(np, "big-endian", NULL))
549 flags |= MPIC_BIG_ENDIAN;
550
551 /* Primary Big Endian means HT interrupts. This is quite dodgy
552 * but works until I find a better way
553 */
554 if (master && (flags & MPIC_BIG_ENDIAN))
555 flags |= MPIC_BROKEN_U3;
556
557 mpic = mpic_alloc(r.start, flags, 0, offset, count, master ? 252 : 0,
558 senses, count, name);
559 if (mpic == NULL)
560 return NULL;
561
562 mpic_init(mpic);
563
564 return mpic;
565 }
566
527static int __init pmac_pic_probe_mpic(void) 567static int __init pmac_pic_probe_mpic(void)
528{ 568{
529 struct mpic *mpic1, *mpic2; 569 struct mpic *mpic1, *mpic2;
530 struct device_node *np, *master = NULL, *slave = NULL; 570 struct device_node *np, *master = NULL, *slave = NULL;
531 unsigned char senses[128];
532 struct resource r;
533 571
534 /* We can have up to 2 MPICs cascaded */ 572 /* We can have up to 2 MPICs cascaded */
535 for (np = NULL; (np = of_find_node_by_type(np, "open-pic")) 573 for (np = NULL; (np = of_find_node_by_type(np, "open-pic"))
536 != NULL;) { 574 != NULL;) {
537 if (master == NULL && 575 if (master == NULL &&
538 get_property(np, "interrupt-parent", NULL) != NULL) 576 get_property(np, "interrupts", NULL) == NULL)
539 master = of_node_get(np); 577 master = of_node_get(np);
540 else if (slave == NULL) 578 else if (slave == NULL)
541 slave = of_node_get(np); 579 slave = of_node_get(np);
@@ -557,13 +595,8 @@ static int __init pmac_pic_probe_mpic(void)
557 ppc_md.get_irq = mpic_get_irq; 595 ppc_md.get_irq = mpic_get_irq;
558 596
559 /* Setup master */ 597 /* Setup master */
560 BUG_ON(of_address_to_resource(master, 0, &r)); 598 mpic1 = pmac_setup_one_mpic(master, 1);
561 pmac_call_feature(PMAC_FTR_ENABLE_MPIC, master, 0, 0);
562 prom_get_irq_senses(senses, 0, 128);
563 mpic1 = mpic_alloc(r.start, MPIC_PRIMARY | MPIC_WANTS_RESET,
564 0, 0, 128, 252, senses, 128, " OpenPIC ");
565 BUG_ON(mpic1 == NULL); 599 BUG_ON(mpic1 == NULL);
566 mpic_init(mpic1);
567 600
568 /* Install NMI if any */ 601 /* Install NMI if any */
569 pmac_pic_setup_mpic_nmi(mpic1); 602 pmac_pic_setup_mpic_nmi(mpic1);
@@ -574,27 +607,12 @@ static int __init pmac_pic_probe_mpic(void)
574 if (slave == NULL || slave->n_intrs < 1) 607 if (slave == NULL || slave->n_intrs < 1)
575 return 0; 608 return 0;
576 609
577 /* Setup slave, failures are non-fatal */ 610 mpic2 = pmac_setup_one_mpic(slave, 0);
578 if (of_address_to_resource(slave, 0, &r)) {
579 printk(KERN_ERR "Can't get address of MPIC %s\n",
580 slave->full_name);
581 return 0;
582 }
583 pmac_call_feature(PMAC_FTR_ENABLE_MPIC, slave, 0, 0);
584 prom_get_irq_senses(senses, 128, 128 + 124);
585
586 /* We don't need to set MPIC_BROKEN_U3 here since we don't have
587 * hypertransport interrupts routed to it, at least not on currently
588 * supported machines, that may change.
589 */
590 mpic2 = mpic_alloc(r.start, MPIC_BIG_ENDIAN | MPIC_WANTS_RESET,
591 0, 128, 124, 0, senses, 124, " U3-MPIC ");
592 if (mpic2 == NULL) { 611 if (mpic2 == NULL) {
593 printk(KERN_ERR "Can't create slave MPIC %s\n", 612 printk(KERN_ERR "Failed to setup slave MPIC\n");
594 slave->full_name); 613 of_node_put(slave);
595 return 0; 614 return 0;
596 } 615 }
597 mpic_init(mpic2);
598 mpic_setup_cascade(slave->intrs[0].line, pmac_u3_cascade, mpic2); 616 mpic_setup_cascade(slave->intrs[0].line, pmac_u3_cascade, mpic2);
599 617
600 of_node_put(slave); 618 of_node_put(slave);
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index 18c5620f87fa..1daa5a06e9ea 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -345,7 +345,7 @@ void __init pmac_setup_arch(void)
345 345
346#ifdef CONFIG_SMP 346#ifdef CONFIG_SMP
347 /* Check for Core99 */ 347 /* Check for Core99 */
348 if (find_devices("uni-n") || find_devices("u3")) 348 if (find_devices("uni-n") || find_devices("u3") || find_devices("u4"))
349 smp_ops = &core99_smp_ops; 349 smp_ops = &core99_smp_ops;
350#ifdef CONFIG_PPC32 350#ifdef CONFIG_PPC32
351 else 351 else
@@ -635,7 +635,7 @@ static void __init pmac_init_early(void)
635 /* Setup interrupt mapping options */ 635 /* Setup interrupt mapping options */
636 ppc64_interrupt_controller = IC_OPEN_PIC; 636 ppc64_interrupt_controller = IC_OPEN_PIC;
637 637
638 iommu_init_early_u3(); 638 iommu_init_early_dart();
639#endif 639#endif
640} 640}
641 641
@@ -711,7 +711,7 @@ static int __init pmac_probe(int platform)
711 * occupies having to be broken up so the DART itself is not 711 * occupies having to be broken up so the DART itself is not
712 * part of the cacheable linar mapping 712 * part of the cacheable linar mapping
713 */ 713 */
714 alloc_u3_dart_table(); 714 alloc_dart_table();
715#endif 715#endif
716 716
717#ifdef CONFIG_PMAC_SMU 717#ifdef CONFIG_PMAC_SMU
@@ -733,10 +733,11 @@ static int pmac_pci_probe_mode(struct pci_bus *bus)
733 struct device_node *node = bus->sysdata; 733 struct device_node *node = bus->sysdata;
734 734
735 /* We need to use normal PCI probing for the AGP bus, 735 /* We need to use normal PCI probing for the AGP bus,
736 since the device for the AGP bridge isn't in the tree. */ 736 * since the device for the AGP bridge isn't in the tree.
737 if (bus->self == NULL && device_is_compatible(node, "u3-agp")) 737 */
738 if (bus->self == NULL && (device_is_compatible(node, "u3-agp") ||
739 device_is_compatible(node, "u4-pcie")))
738 return PCI_PROBE_NORMAL; 740 return PCI_PROBE_NORMAL;
739
740 return PCI_PROBE_DEVTREE; 741 return PCI_PROBE_DEVTREE;
741} 742}
742#endif 743#endif
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index 862f1e985c19..df01bb8feb16 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -361,7 +361,6 @@ static void __init psurge_dual_sync_tb(int cpu_nr)
361 set_dec(tb_ticks_per_jiffy); 361 set_dec(tb_ticks_per_jiffy);
362 /* XXX fixme */ 362 /* XXX fixme */
363 set_tb(0, 0); 363 set_tb(0, 0);
364 last_jiffy_stamp(cpu_nr) = 0;
365 364
366 if (cpu_nr > 0) { 365 if (cpu_nr > 0) {
367 mb(); 366 mb();
@@ -429,15 +428,62 @@ struct smp_ops_t psurge_smp_ops = {
429}; 428};
430#endif /* CONFIG_PPC32 - actually powersurge support */ 429#endif /* CONFIG_PPC32 - actually powersurge support */
431 430
431/*
432 * Core 99 and later support
433 */
434
435static void (*pmac_tb_freeze)(int freeze);
436static unsigned long timebase;
437static int tb_req;
438
439static void smp_core99_give_timebase(void)
440{
441 unsigned long flags;
442
443 local_irq_save(flags);
444
445 while(!tb_req)
446 barrier();
447 tb_req = 0;
448 (*pmac_tb_freeze)(1);
449 mb();
450 timebase = get_tb();
451 mb();
452 while (timebase)
453 barrier();
454 mb();
455 (*pmac_tb_freeze)(0);
456 mb();
457
458 local_irq_restore(flags);
459}
460
461
462static void __devinit smp_core99_take_timebase(void)
463{
464 unsigned long flags;
465
466 local_irq_save(flags);
467
468 tb_req = 1;
469 mb();
470 while (!timebase)
471 barrier();
472 mb();
473 set_tb(timebase >> 32, timebase & 0xffffffff);
474 timebase = 0;
475 mb();
476 set_dec(tb_ticks_per_jiffy/2);
477
478 local_irq_restore(flags);
479}
480
432#ifdef CONFIG_PPC64 481#ifdef CONFIG_PPC64
433/* 482/*
434 * G5s enable/disable the timebase via an i2c-connected clock chip. 483 * G5s enable/disable the timebase via an i2c-connected clock chip.
435 */ 484 */
436static struct device_node *pmac_tb_clock_chip_host; 485static struct device_node *pmac_tb_clock_chip_host;
437static u8 pmac_tb_pulsar_addr; 486static u8 pmac_tb_pulsar_addr;
438static void (*pmac_tb_freeze)(int freeze);
439static DEFINE_SPINLOCK(timebase_lock);
440static unsigned long timebase;
441 487
442static void smp_core99_cypress_tb_freeze(int freeze) 488static void smp_core99_cypress_tb_freeze(int freeze)
443{ 489{
@@ -447,7 +493,8 @@ static void smp_core99_cypress_tb_freeze(int freeze)
447 /* Strangely, the device-tree says address is 0xd2, but darwin 493 /* Strangely, the device-tree says address is 0xd2, but darwin
448 * accesses 0xd0 ... 494 * accesses 0xd0 ...
449 */ 495 */
450 pmac_low_i2c_setmode(pmac_tb_clock_chip_host, pmac_low_i2c_mode_combined); 496 pmac_low_i2c_setmode(pmac_tb_clock_chip_host,
497 pmac_low_i2c_mode_combined);
451 rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host, 498 rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host,
452 0xd0 | pmac_low_i2c_read, 499 0xd0 | pmac_low_i2c_read,
453 0x81, &data, 1); 500 0x81, &data, 1);
@@ -475,7 +522,8 @@ static void smp_core99_pulsar_tb_freeze(int freeze)
475 u8 data; 522 u8 data;
476 int rc; 523 int rc;
477 524
478 pmac_low_i2c_setmode(pmac_tb_clock_chip_host, pmac_low_i2c_mode_combined); 525 pmac_low_i2c_setmode(pmac_tb_clock_chip_host,
526 pmac_low_i2c_mode_combined);
479 rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host, 527 rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host,
480 pmac_tb_pulsar_addr | pmac_low_i2c_read, 528 pmac_tb_pulsar_addr | pmac_low_i2c_read,
481 0x2e, &data, 1); 529 0x2e, &data, 1);
@@ -496,54 +544,14 @@ static void smp_core99_pulsar_tb_freeze(int freeze)
496 } 544 }
497} 545}
498 546
499 547static void __init smp_core99_setup_i2c_hwsync(int ncpus)
500static void smp_core99_give_timebase(void)
501{
502 /* Open i2c bus for synchronous access */
503 if (pmac_low_i2c_open(pmac_tb_clock_chip_host, 0))
504 panic("Can't open i2c for TB sync !\n");
505
506 spin_lock(&timebase_lock);
507 (*pmac_tb_freeze)(1);
508 mb();
509 timebase = get_tb();
510 spin_unlock(&timebase_lock);
511
512 while (timebase)
513 barrier();
514
515 spin_lock(&timebase_lock);
516 (*pmac_tb_freeze)(0);
517 spin_unlock(&timebase_lock);
518
519 /* Close i2c bus */
520 pmac_low_i2c_close(pmac_tb_clock_chip_host);
521}
522
523
524static void __devinit smp_core99_take_timebase(void)
525{
526 while (!timebase)
527 barrier();
528 spin_lock(&timebase_lock);
529 set_tb(timebase >> 32, timebase & 0xffffffff);
530 timebase = 0;
531 spin_unlock(&timebase_lock);
532}
533
534static void __init smp_core99_setup(int ncpus)
535{ 548{
536 struct device_node *cc = NULL; 549 struct device_node *cc = NULL;
537 struct device_node *p; 550 struct device_node *p;
551 const char *name = NULL;
538 u32 *reg; 552 u32 *reg;
539 int ok; 553 int ok;
540 554
541 /* HW sync only on these platforms */
542 if (!machine_is_compatible("PowerMac7,2") &&
543 !machine_is_compatible("PowerMac7,3") &&
544 !machine_is_compatible("RackMac3,1"))
545 return;
546
547 /* Look for the clock chip */ 555 /* Look for the clock chip */
548 while ((cc = of_find_node_by_name(cc, "i2c-hwclock")) != NULL) { 556 while ((cc = of_find_node_by_name(cc, "i2c-hwclock")) != NULL) {
549 p = of_get_parent(cc); 557 p = of_get_parent(cc);
@@ -561,114 +569,64 @@ static void __init smp_core99_setup(int ncpus)
561 if (device_is_compatible(cc, "pulsar-legacy-slewing")) { 569 if (device_is_compatible(cc, "pulsar-legacy-slewing")) {
562 pmac_tb_freeze = smp_core99_pulsar_tb_freeze; 570 pmac_tb_freeze = smp_core99_pulsar_tb_freeze;
563 pmac_tb_pulsar_addr = 0xd2; 571 pmac_tb_pulsar_addr = 0xd2;
564 printk(KERN_INFO "Timebase clock is Pulsar chip\n"); 572 name = "Pulsar";
565 } else if (device_is_compatible(cc, "cy28508")) { 573 } else if (device_is_compatible(cc, "cy28508")) {
566 pmac_tb_freeze = smp_core99_cypress_tb_freeze; 574 pmac_tb_freeze = smp_core99_cypress_tb_freeze;
567 printk(KERN_INFO "Timebase clock is Cypress chip\n"); 575 name = "Cypress";
568 } 576 }
569 break; 577 break;
570 case 0xd4: 578 case 0xd4:
571 pmac_tb_freeze = smp_core99_pulsar_tb_freeze; 579 pmac_tb_freeze = smp_core99_pulsar_tb_freeze;
572 pmac_tb_pulsar_addr = 0xd4; 580 pmac_tb_pulsar_addr = 0xd4;
573 printk(KERN_INFO "Timebase clock is Pulsar chip\n"); 581 name = "Pulsar";
574 break; 582 break;
575 } 583 }
576 if (pmac_tb_freeze != NULL) { 584 if (pmac_tb_freeze != NULL)
577 pmac_tb_clock_chip_host = of_get_parent(cc);
578 of_node_put(cc);
579 break; 585 break;
580 }
581 } 586 }
582 if (pmac_tb_freeze == NULL) { 587 if (pmac_tb_freeze != NULL) {
583 smp_ops->give_timebase = smp_generic_give_timebase; 588 struct device_node *p = of_get_parent(cc);
584 smp_ops->take_timebase = smp_generic_take_timebase; 589 of_node_put(cc);
590 while(p && strcmp(p->type, "i2c")) {
591 cc = of_get_parent(p);
592 of_node_put(p);
593 p = cc;
594 }
595 if (p == NULL)
596 goto no_i2c_sync;
597 /* Open i2c bus for synchronous access */
598 if (pmac_low_i2c_open(p, 0)) {
599 printk(KERN_ERR "Failed top open i2c bus %s for clock"
600 " sync, fallback to software sync !\n",
601 p->full_name);
602 of_node_put(p);
603 goto no_i2c_sync;
604 }
605 pmac_tb_clock_chip_host = p;
606 printk(KERN_INFO "Processor timebase sync using %s i2c clock\n",
607 name);
608 return;
585 } 609 }
610 no_i2c_sync:
611 pmac_tb_freeze = NULL;
586} 612}
587 613
588/* nothing to do here, caches are already set up by service processor */ 614#endif /* CONFIG_PPC64 */
589static inline void __devinit core99_init_caches(int cpu)
590{
591}
592 615
593#else /* CONFIG_PPC64 */
594 616
595/* 617/*
596 * SMP G4 powermacs use a GPIO to enable/disable the timebase. 618 * SMP G4 and newer G5 use a GPIO to enable/disable the timebase.
597 */ 619 */
598 620
599static unsigned int core99_tb_gpio; /* Timebase freeze GPIO */ 621static unsigned int core99_tb_gpio; /* Timebase freeze GPIO */
600 622
601static unsigned int pri_tb_hi, pri_tb_lo; 623static void smp_core99_gpio_tb_freeze(int freeze)
602static unsigned int pri_tb_stamp;
603
604/* not __init, called in sleep/wakeup code */
605void smp_core99_give_timebase(void)
606{ 624{
607 unsigned long flags; 625 if (freeze)
608 unsigned int t; 626 pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 4);
609 627 else
610 /* wait for the secondary to be in take_timebase */ 628 pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 0);
611 for (t = 100000; t > 0 && !sec_tb_reset; --t)
612 udelay(10);
613 if (!sec_tb_reset) {
614 printk(KERN_WARNING "Timeout waiting sync on second CPU\n");
615 return;
616 }
617
618 /* freeze the timebase and read it */
619 /* disable interrupts so the timebase is disabled for the
620 shortest possible time */
621 local_irq_save(flags);
622 pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 4);
623 pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, core99_tb_gpio, 0); 629 pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, core99_tb_gpio, 0);
624 mb();
625 pri_tb_hi = get_tbu();
626 pri_tb_lo = get_tbl();
627 pri_tb_stamp = last_jiffy_stamp(smp_processor_id());
628 mb();
629
630 /* tell the secondary we're ready */
631 sec_tb_reset = 2;
632 mb();
633
634 /* wait for the secondary to have taken it */
635 /* note: can't use udelay here, since it needs the timebase running */
636 for (t = 10000000; t > 0 && sec_tb_reset; --t)
637 barrier();
638 if (sec_tb_reset)
639 /* XXX BUG_ON here? */
640 printk(KERN_WARNING "Timeout waiting sync(2) on second CPU\n");
641
642 /* Now, restart the timebase by leaving the GPIO to an open collector */
643 pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 0);
644 pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, core99_tb_gpio, 0);
645 local_irq_restore(flags);
646}
647
648/* not __init, called in sleep/wakeup code */
649void smp_core99_take_timebase(void)
650{
651 unsigned long flags;
652
653 /* tell the primary we're here */
654 sec_tb_reset = 1;
655 mb();
656
657 /* wait for the primary to set pri_tb_hi/lo */
658 while (sec_tb_reset < 2)
659 mb();
660
661 /* set our stuff the same as the primary */
662 local_irq_save(flags);
663 set_dec(1);
664 set_tb(pri_tb_hi, pri_tb_lo);
665 last_jiffy_stamp(smp_processor_id()) = pri_tb_stamp;
666 mb();
667
668 /* tell the primary we're done */
669 sec_tb_reset = 0;
670 mb();
671 local_irq_restore(flags);
672} 630}
673 631
674/* L2 and L3 cache settings to pass from CPU0 to CPU1 on G4 cpus */ 632/* L2 and L3 cache settings to pass from CPU0 to CPU1 on G4 cpus */
@@ -677,6 +635,7 @@ volatile static long int core99_l3_cache;
677 635
678static void __devinit core99_init_caches(int cpu) 636static void __devinit core99_init_caches(int cpu)
679{ 637{
638#ifndef CONFIG_PPC64
680 if (!cpu_has_feature(CPU_FTR_L2CR)) 639 if (!cpu_has_feature(CPU_FTR_L2CR))
681 return; 640 return;
682 641
@@ -702,30 +661,80 @@ static void __devinit core99_init_caches(int cpu)
702 _set_L3CR(core99_l3_cache); 661 _set_L3CR(core99_l3_cache);
703 printk("CPU%d: L3CR set to %lx\n", cpu, core99_l3_cache); 662 printk("CPU%d: L3CR set to %lx\n", cpu, core99_l3_cache);
704 } 663 }
664#endif /* !CONFIG_PPC64 */
705} 665}
706 666
707static void __init smp_core99_setup(int ncpus) 667static void __init smp_core99_setup(int ncpus)
708{ 668{
709 struct device_node *cpu; 669#ifdef CONFIG_PPC64
710 u32 *tbprop = NULL;
711 int i;
712 670
713 core99_tb_gpio = KL_GPIO_TB_ENABLE; /* default value */ 671 /* i2c based HW sync on some G5s */
714 cpu = of_find_node_by_type(NULL, "cpu"); 672 if (machine_is_compatible("PowerMac7,2") ||
715 if (cpu != NULL) { 673 machine_is_compatible("PowerMac7,3") ||
716 tbprop = (u32 *)get_property(cpu, "timebase-enable", NULL); 674 machine_is_compatible("RackMac3,1"))
717 if (tbprop) 675 smp_core99_setup_i2c_hwsync(ncpus);
718 core99_tb_gpio = *tbprop; 676
719 of_node_put(cpu); 677 /* GPIO based HW sync on recent G5s */
678 if (pmac_tb_freeze == NULL) {
679 struct device_node *np =
680 of_find_node_by_name(NULL, "timebase-enable");
681 u32 *reg = (u32 *)get_property(np, "reg", NULL);
682
683 if (np && reg && !strcmp(np->type, "gpio")) {
684 core99_tb_gpio = *reg;
685 if (core99_tb_gpio < 0x50)
686 core99_tb_gpio += 0x50;
687 pmac_tb_freeze = smp_core99_gpio_tb_freeze;
688 printk(KERN_INFO "Processor timebase sync using"
689 " GPIO 0x%02x\n", core99_tb_gpio);
690 }
720 } 691 }
721 692
722 /* XXX should get this from reg properties */ 693#else /* CONFIG_PPC64 */
723 for (i = 1; i < ncpus; ++i) 694
724 smp_hw_index[i] = i; 695 /* GPIO based HW sync on ppc32 Core99 */
725 powersave_nap = 0; 696 if (pmac_tb_freeze == NULL && !machine_is_compatible("MacRISC4")) {
726} 697 struct device_node *cpu;
698 u32 *tbprop = NULL;
699
700 core99_tb_gpio = KL_GPIO_TB_ENABLE; /* default value */
701 cpu = of_find_node_by_type(NULL, "cpu");
702 if (cpu != NULL) {
703 tbprop = (u32 *)get_property(cpu, "timebase-enable",
704 NULL);
705 if (tbprop)
706 core99_tb_gpio = *tbprop;
707 of_node_put(cpu);
708 }
709 pmac_tb_freeze = smp_core99_gpio_tb_freeze;
710 printk(KERN_INFO "Processor timebase sync using"
711 " GPIO 0x%02x\n", core99_tb_gpio);
712 }
713
714#endif /* CONFIG_PPC64 */
715
716 /* No timebase sync, fallback to software */
717 if (pmac_tb_freeze == NULL) {
718 smp_ops->give_timebase = smp_generic_give_timebase;
719 smp_ops->take_timebase = smp_generic_take_timebase;
720 printk(KERN_INFO "Processor timebase sync using software\n");
721 }
722
723#ifndef CONFIG_PPC64
724 {
725 int i;
726
727 /* XXX should get this from reg properties */
728 for (i = 1; i < ncpus; ++i)
729 smp_hw_index[i] = i;
730 }
727#endif 731#endif
728 732
733 /* 32 bits SMP can't NAP */
734 if (!machine_is_compatible("MacRISC4"))
735 powersave_nap = 0;
736}
737
729static int __init smp_core99_probe(void) 738static int __init smp_core99_probe(void)
730{ 739{
731 struct device_node *cpus; 740 struct device_node *cpus;
@@ -803,17 +812,25 @@ static void __devinit smp_core99_setup_cpu(int cpu_nr)
803 mpic_setup_this_cpu(); 812 mpic_setup_this_cpu();
804 813
805 if (cpu_nr == 0) { 814 if (cpu_nr == 0) {
806#ifdef CONFIG_POWER4 815#ifdef CONFIG_PPC64
807 extern void g5_phy_disable_cpu1(void); 816 extern void g5_phy_disable_cpu1(void);
808 817
818 /* Close i2c bus if it was used for tb sync */
819 if (pmac_tb_clock_chip_host) {
820 pmac_low_i2c_close(pmac_tb_clock_chip_host);
821 pmac_tb_clock_chip_host = NULL;
822 }
823
809 /* If we didn't start the second CPU, we must take 824 /* If we didn't start the second CPU, we must take
810 * it off the bus 825 * it off the bus
811 */ 826 */
812 if (machine_is_compatible("MacRISC4") && 827 if (machine_is_compatible("MacRISC4") &&
813 num_online_cpus() < 2) 828 num_online_cpus() < 2)
814 g5_phy_disable_cpu1(); 829 g5_phy_disable_cpu1();
815#endif /* CONFIG_POWER4 */ 830#endif /* CONFIG_PPC64 */
816 if (ppc_md.progress) ppc_md.progress("core99_setup_cpu 0 done", 0x349); 831
832 if (ppc_md.progress)
833 ppc_md.progress("core99_setup_cpu 0 done", 0x349);
817 } 834 }
818} 835}
819 836
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index b3e3636a57b0..14b9abde2d27 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -4,6 +4,6 @@ obj-$(CONFIG_PPC_I8259) += i8259.o
4obj-$(CONFIG_PPC_MPC106) += grackle.o 4obj-$(CONFIG_PPC_MPC106) += grackle.o
5obj-$(CONFIG_BOOKE) += dcr.o 5obj-$(CONFIG_BOOKE) += dcr.o
6obj-$(CONFIG_40x) += dcr.o 6obj-$(CONFIG_40x) += dcr.o
7obj-$(CONFIG_U3_DART) += u3_iommu.o 7obj-$(CONFIG_U3_DART) += dart_iommu.o
8obj-$(CONFIG_MMIO_NVRAM) += mmio_nvram.o 8obj-$(CONFIG_MMIO_NVRAM) += mmio_nvram.o
9obj-$(CONFIG_83xx) += ipic.o 9obj-$(CONFIG_83xx) += ipic.o
diff --git a/arch/powerpc/sysdev/dart.h b/arch/powerpc/sysdev/dart.h
index 33ed9ed7fc1e..c2d05763ccbe 100644
--- a/arch/powerpc/sysdev/dart.h
+++ b/arch/powerpc/sysdev/dart.h
@@ -20,29 +20,44 @@
20#define _POWERPC_SYSDEV_DART_H 20#define _POWERPC_SYSDEV_DART_H
21 21
22 22
23/* physical base of DART registers */
24#define DART_BASE 0xf8033000UL
25
26/* Offset from base to control register */ 23/* Offset from base to control register */
27#define DARTCNTL 0 24#define DART_CNTL 0
25
28/* Offset from base to exception register */ 26/* Offset from base to exception register */
29#define DARTEXCP 0x10 27#define DART_EXCP_U3 0x10
30/* Offset from base to TLB tag registers */ 28/* Offset from base to TLB tag registers */
31#define DARTTAG 0x1000 29#define DART_TAGS_U3 0x1000
32 30
31/* U4 registers */
32#define DART_BASE_U4 0x10
33#define DART_SIZE_U4 0x20
34#define DART_EXCP_U4 0x30
35#define DART_TAGS_U4 0x1000
33 36
34/* Control Register fields */ 37/* Control Register fields */
35 38
36/* base address of table (pfn) */ 39/* U3 registers */
37#define DARTCNTL_BASE_MASK 0xfffff 40#define DART_CNTL_U3_BASE_MASK 0xfffff
38#define DARTCNTL_BASE_SHIFT 12 41#define DART_CNTL_U3_BASE_SHIFT 12
42#define DART_CNTL_U3_FLUSHTLB 0x400
43#define DART_CNTL_U3_ENABLE 0x200
44#define DART_CNTL_U3_SIZE_MASK 0x1ff
45#define DART_CNTL_U3_SIZE_SHIFT 0
46
47/* U4 registers */
48#define DART_BASE_U4_BASE_MASK 0xffffff
49#define DART_BASE_U4_BASE_SHIFT 0
50#define DART_CNTL_U4_FLUSHTLB 0x20000000
51#define DART_CNTL_U4_ENABLE 0x80000000
52#define DART_SIZE_U4_SIZE_MASK 0x1fff
53#define DART_SIZE_U4_SIZE_SHIFT 0
54
55#define DART_REG(r) (dart + ((r) >> 2))
56#define DART_IN(r) (in_be32(DART_REG(r)))
57#define DART_OUT(r,v) (out_be32(DART_REG(r), (v)))
39 58
40#define DARTCNTL_FLUSHTLB 0x400
41#define DARTCNTL_ENABLE 0x200
42 59
43/* size of table in pages */ 60/* size of table in pages */
44#define DARTCNTL_SIZE_MASK 0x1ff
45#define DARTCNTL_SIZE_SHIFT 0
46 61
47 62
48/* DART table fields */ 63/* DART table fields */
diff --git a/arch/powerpc/sysdev/u3_iommu.c b/arch/powerpc/sysdev/dart_iommu.c
index 5c1a26a6d00c..df0dbdee762a 100644
--- a/arch/powerpc/sysdev/u3_iommu.c
+++ b/arch/powerpc/sysdev/dart_iommu.c
@@ -1,25 +1,27 @@
1/* 1/*
2 * arch/powerpc/sysdev/u3_iommu.c 2 * arch/powerpc/sysdev/dart_iommu.c
3 * 3 *
4 * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation 4 * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
5 * Copyright (C) 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org>,
6 * IBM Corporation
5 * 7 *
6 * Based on pSeries_iommu.c: 8 * Based on pSeries_iommu.c:
7 * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation 9 * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
8 * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation 10 * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
9 * 11 *
10 * Dynamic DMA mapping support, Apple U3 & IBM CPC925 "DART" iommu. 12 * Dynamic DMA mapping support, Apple U3, U4 & IBM CPC925 "DART" iommu.
13 *
11 * 14 *
12 *
13 * This program is free software; you can redistribute it and/or modify 15 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by 16 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or 17 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version. 18 * (at your option) any later version.
17 * 19 *
18 * This program is distributed in the hope that it will be useful, 20 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details. 23 * GNU General Public License for more details.
22 * 24 *
23 * You should have received a copy of the GNU General Public License 25 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software 26 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
@@ -57,21 +59,22 @@ static unsigned long dart_tablesize;
57static u32 *dart_vbase; 59static u32 *dart_vbase;
58 60
59/* Mapped base address for the dart */ 61/* Mapped base address for the dart */
60static unsigned int *dart; 62static unsigned int *__iomem dart;
61 63
62/* Dummy val that entries are set to when unused */ 64/* Dummy val that entries are set to when unused */
63static unsigned int dart_emptyval; 65static unsigned int dart_emptyval;
64 66
65static struct iommu_table iommu_table_u3; 67static struct iommu_table iommu_table_dart;
66static int iommu_table_u3_inited; 68static int iommu_table_dart_inited;
67static int dart_dirty; 69static int dart_dirty;
70static int dart_is_u4;
68 71
69#define DBG(...) 72#define DBG(...)
70 73
71static inline void dart_tlb_invalidate_all(void) 74static inline void dart_tlb_invalidate_all(void)
72{ 75{
73 unsigned long l = 0; 76 unsigned long l = 0;
74 unsigned int reg; 77 unsigned int reg, inv_bit;
75 unsigned long limit; 78 unsigned long limit;
76 79
77 DBG("dart: flush\n"); 80 DBG("dart: flush\n");
@@ -81,29 +84,28 @@ static inline void dart_tlb_invalidate_all(void)
81 * 84 *
82 * Gotcha: Sometimes, the DART won't detect that the bit gets 85 * Gotcha: Sometimes, the DART won't detect that the bit gets
83 * set. If so, clear it and set it again. 86 * set. If so, clear it and set it again.
84 */ 87 */
85 88
86 limit = 0; 89 limit = 0;
87 90
91 inv_bit = dart_is_u4 ? DART_CNTL_U4_FLUSHTLB : DART_CNTL_U3_FLUSHTLB;
88retry: 92retry:
89 reg = in_be32((unsigned int *)dart+DARTCNTL);
90 reg |= DARTCNTL_FLUSHTLB;
91 out_be32((unsigned int *)dart+DARTCNTL, reg);
92
93 l = 0; 93 l = 0;
94 while ((in_be32((unsigned int *)dart+DARTCNTL) & DARTCNTL_FLUSHTLB) && 94 reg = DART_IN(DART_CNTL);
95 l < (1L<<limit)) { 95 reg |= inv_bit;
96 DART_OUT(DART_CNTL, reg);
97
98 while ((DART_IN(DART_CNTL) & inv_bit) && l < (1L << limit))
96 l++; 99 l++;
97 } 100 if (l == (1L << limit)) {
98 if (l == (1L<<limit)) {
99 if (limit < 4) { 101 if (limit < 4) {
100 limit++; 102 limit++;
101 reg = in_be32((unsigned int *)dart+DARTCNTL); 103 reg = DART_IN(DART_CNTL);
102 reg &= ~DARTCNTL_FLUSHTLB; 104 reg &= ~inv_bit;
103 out_be32((unsigned int *)dart+DARTCNTL, reg); 105 DART_OUT(DART_CNTL, reg);
104 goto retry; 106 goto retry;
105 } else 107 } else
106 panic("U3-DART: TLB did not flush after waiting a long " 108 panic("DART: TLB did not flush after waiting a long "
107 "time. Buggy U3 ?"); 109 "time. Buggy U3 ?");
108 } 110 }
109} 111}
@@ -115,7 +117,7 @@ static void dart_flush(struct iommu_table *tbl)
115 dart_dirty = 0; 117 dart_dirty = 0;
116} 118}
117 119
118static void dart_build(struct iommu_table *tbl, long index, 120static void dart_build(struct iommu_table *tbl, long index,
119 long npages, unsigned long uaddr, 121 long npages, unsigned long uaddr,
120 enum dma_data_direction direction) 122 enum dma_data_direction direction)
121{ 123{
@@ -128,7 +130,7 @@ static void dart_build(struct iommu_table *tbl, long index,
128 npages <<= DART_PAGE_FACTOR; 130 npages <<= DART_PAGE_FACTOR;
129 131
130 dp = ((unsigned int*)tbl->it_base) + index; 132 dp = ((unsigned int*)tbl->it_base) + index;
131 133
132 /* On U3, all memory is contigous, so we can move this 134 /* On U3, all memory is contigous, so we can move this
133 * out of the loop. 135 * out of the loop.
134 */ 136 */
@@ -148,7 +150,7 @@ static void dart_build(struct iommu_table *tbl, long index,
148static void dart_free(struct iommu_table *tbl, long index, long npages) 150static void dart_free(struct iommu_table *tbl, long index, long npages)
149{ 151{
150 unsigned int *dp; 152 unsigned int *dp;
151 153
152 /* We don't worry about flushing the TLB cache. The only drawback of 154 /* We don't worry about flushing the TLB cache. The only drawback of
153 * not doing it is that we won't catch buggy device drivers doing 155 * not doing it is that we won't catch buggy device drivers doing
154 * bad DMAs, but then no 32-bit architecture ever does either. 156 * bad DMAs, but then no 32-bit architecture ever does either.
@@ -160,7 +162,7 @@ static void dart_free(struct iommu_table *tbl, long index, long npages)
160 npages <<= DART_PAGE_FACTOR; 162 npages <<= DART_PAGE_FACTOR;
161 163
162 dp = ((unsigned int *)tbl->it_base) + index; 164 dp = ((unsigned int *)tbl->it_base) + index;
163 165
164 while (npages--) 166 while (npages--)
165 *(dp++) = dart_emptyval; 167 *(dp++) = dart_emptyval;
166} 168}
@@ -168,20 +170,25 @@ static void dart_free(struct iommu_table *tbl, long index, long npages)
168 170
169static int dart_init(struct device_node *dart_node) 171static int dart_init(struct device_node *dart_node)
170{ 172{
171 unsigned int regword;
172 unsigned int i; 173 unsigned int i;
173 unsigned long tmp; 174 unsigned long tmp, base, size;
175 struct resource r;
174 176
175 if (dart_tablebase == 0 || dart_tablesize == 0) { 177 if (dart_tablebase == 0 || dart_tablesize == 0) {
176 printk(KERN_INFO "U3-DART: table not allocated, using direct DMA\n"); 178 printk(KERN_INFO "DART: table not allocated, using "
179 "direct DMA\n");
177 return -ENODEV; 180 return -ENODEV;
178 } 181 }
179 182
183 if (of_address_to_resource(dart_node, 0, &r))
184 panic("DART: can't get register base ! ");
185
180 /* Make sure nothing from the DART range remains in the CPU cache 186 /* Make sure nothing from the DART range remains in the CPU cache
181 * from a previous mapping that existed before the kernel took 187 * from a previous mapping that existed before the kernel took
182 * over 188 * over
183 */ 189 */
184 flush_dcache_phys_range(dart_tablebase, dart_tablebase + dart_tablesize); 190 flush_dcache_phys_range(dart_tablebase,
191 dart_tablebase + dart_tablesize);
185 192
186 /* Allocate a spare page to map all invalid DART pages. We need to do 193 /* Allocate a spare page to map all invalid DART pages. We need to do
187 * that to work around what looks like a problem with the HT bridge 194 * that to work around what looks like a problem with the HT bridge
@@ -189,21 +196,16 @@ static int dart_init(struct device_node *dart_node)
189 */ 196 */
190 tmp = lmb_alloc(DART_PAGE_SIZE, DART_PAGE_SIZE); 197 tmp = lmb_alloc(DART_PAGE_SIZE, DART_PAGE_SIZE);
191 if (!tmp) 198 if (!tmp)
192 panic("U3-DART: Cannot allocate spare page!"); 199 panic("DART: Cannot allocate spare page!");
193 dart_emptyval = DARTMAP_VALID | ((tmp >> DART_PAGE_SHIFT) & DARTMAP_RPNMASK); 200 dart_emptyval = DARTMAP_VALID | ((tmp >> DART_PAGE_SHIFT) &
201 DARTMAP_RPNMASK);
194 202
195 /* Map in DART registers. FIXME: Use device node to get base address */ 203 /* Map in DART registers */
196 dart = ioremap(DART_BASE, 0x7000); 204 dart = ioremap(r.start, r.end - r.start + 1);
197 if (dart == NULL) 205 if (dart == NULL)
198 panic("U3-DART: Cannot map registers!"); 206 panic("DART: Cannot map registers!");
199 207
200 /* Set initial control register contents: table base, 208 /* Map in DART table */
201 * table size and enable bit
202 */
203 regword = DARTCNTL_ENABLE |
204 ((dart_tablebase >> DART_PAGE_SHIFT) << DARTCNTL_BASE_SHIFT) |
205 (((dart_tablesize >> DART_PAGE_SHIFT) & DARTCNTL_SIZE_MASK)
206 << DARTCNTL_SIZE_SHIFT);
207 dart_vbase = ioremap(virt_to_abs(dart_tablebase), dart_tablesize); 209 dart_vbase = ioremap(virt_to_abs(dart_tablebase), dart_tablesize);
208 210
209 /* Fill initial table */ 211 /* Fill initial table */
@@ -211,36 +213,50 @@ static int dart_init(struct device_node *dart_node)
211 dart_vbase[i] = dart_emptyval; 213 dart_vbase[i] = dart_emptyval;
212 214
213 /* Initialize DART with table base and enable it. */ 215 /* Initialize DART with table base and enable it. */
214 out_be32((unsigned int *)dart, regword); 216 base = dart_tablebase >> DART_PAGE_SHIFT;
217 size = dart_tablesize >> DART_PAGE_SHIFT;
218 if (dart_is_u4) {
219 BUG_ON(size & ~DART_SIZE_U4_SIZE_MASK);
220 DART_OUT(DART_BASE_U4, base);
221 DART_OUT(DART_SIZE_U4, size);
222 DART_OUT(DART_CNTL, DART_CNTL_U4_ENABLE);
223 } else {
224 BUG_ON(size & ~DART_CNTL_U3_SIZE_MASK);
225 DART_OUT(DART_CNTL,
226 DART_CNTL_U3_ENABLE |
227 (base << DART_CNTL_U3_BASE_SHIFT) |
228 (size << DART_CNTL_U3_SIZE_SHIFT));
229 }
215 230
216 /* Invalidate DART to get rid of possible stale TLBs */ 231 /* Invalidate DART to get rid of possible stale TLBs */
217 dart_tlb_invalidate_all(); 232 dart_tlb_invalidate_all();
218 233
219 printk(KERN_INFO "U3/CPC925 DART IOMMU initialized\n"); 234 printk(KERN_INFO "DART IOMMU initialized for %s type chipset\n",
235 dart_is_u4 ? "U4" : "U3");
220 236
221 return 0; 237 return 0;
222} 238}
223 239
224static void iommu_table_u3_setup(void) 240static void iommu_table_dart_setup(void)
225{ 241{
226 iommu_table_u3.it_busno = 0; 242 iommu_table_dart.it_busno = 0;
227 iommu_table_u3.it_offset = 0; 243 iommu_table_dart.it_offset = 0;
228 /* it_size is in number of entries */ 244 /* it_size is in number of entries */
229 iommu_table_u3.it_size = (dart_tablesize / sizeof(u32)) >> DART_PAGE_FACTOR; 245 iommu_table_dart.it_size = (dart_tablesize / sizeof(u32)) >> DART_PAGE_FACTOR;
230 246
231 /* Initialize the common IOMMU code */ 247 /* Initialize the common IOMMU code */
232 iommu_table_u3.it_base = (unsigned long)dart_vbase; 248 iommu_table_dart.it_base = (unsigned long)dart_vbase;
233 iommu_table_u3.it_index = 0; 249 iommu_table_dart.it_index = 0;
234 iommu_table_u3.it_blocksize = 1; 250 iommu_table_dart.it_blocksize = 1;
235 iommu_init_table(&iommu_table_u3); 251 iommu_init_table(&iommu_table_dart);
236 252
237 /* Reserve the last page of the DART to avoid possible prefetch 253 /* Reserve the last page of the DART to avoid possible prefetch
238 * past the DART mapped area 254 * past the DART mapped area
239 */ 255 */
240 set_bit(iommu_table_u3.it_size - 1, iommu_table_u3.it_map); 256 set_bit(iommu_table_dart.it_size - 1, iommu_table_dart.it_map);
241} 257}
242 258
243static void iommu_dev_setup_u3(struct pci_dev *dev) 259static void iommu_dev_setup_dart(struct pci_dev *dev)
244{ 260{
245 struct device_node *dn; 261 struct device_node *dn;
246 262
@@ -254,35 +270,39 @@ static void iommu_dev_setup_u3(struct pci_dev *dev)
254 dn = pci_device_to_OF_node(dev); 270 dn = pci_device_to_OF_node(dev);
255 271
256 if (dn) 272 if (dn)
257 PCI_DN(dn)->iommu_table = &iommu_table_u3; 273 PCI_DN(dn)->iommu_table = &iommu_table_dart;
258} 274}
259 275
260static void iommu_bus_setup_u3(struct pci_bus *bus) 276static void iommu_bus_setup_dart(struct pci_bus *bus)
261{ 277{
262 struct device_node *dn; 278 struct device_node *dn;
263 279
264 if (!iommu_table_u3_inited) { 280 if (!iommu_table_dart_inited) {
265 iommu_table_u3_inited = 1; 281 iommu_table_dart_inited = 1;
266 iommu_table_u3_setup(); 282 iommu_table_dart_setup();
267 } 283 }
268 284
269 dn = pci_bus_to_OF_node(bus); 285 dn = pci_bus_to_OF_node(bus);
270 286
271 if (dn) 287 if (dn)
272 PCI_DN(dn)->iommu_table = &iommu_table_u3; 288 PCI_DN(dn)->iommu_table = &iommu_table_dart;
273} 289}
274 290
275static void iommu_dev_setup_null(struct pci_dev *dev) { } 291static void iommu_dev_setup_null(struct pci_dev *dev) { }
276static void iommu_bus_setup_null(struct pci_bus *bus) { } 292static void iommu_bus_setup_null(struct pci_bus *bus) { }
277 293
278void iommu_init_early_u3(void) 294void iommu_init_early_dart(void)
279{ 295{
280 struct device_node *dn; 296 struct device_node *dn;
281 297
282 /* Find the DART in the device-tree */ 298 /* Find the DART in the device-tree */
283 dn = of_find_compatible_node(NULL, "dart", "u3-dart"); 299 dn = of_find_compatible_node(NULL, "dart", "u3-dart");
284 if (dn == NULL) 300 if (dn == NULL) {
285 return; 301 dn = of_find_compatible_node(NULL, "dart", "u4-dart");
302 if (dn == NULL)
303 goto bail;
304 dart_is_u4 = 1;
305 }
286 306
287 /* Setup low level TCE operations for the core IOMMU code */ 307 /* Setup low level TCE operations for the core IOMMU code */
288 ppc_md.tce_build = dart_build; 308 ppc_md.tce_build = dart_build;
@@ -290,24 +310,27 @@ void iommu_init_early_u3(void)
290 ppc_md.tce_flush = dart_flush; 310 ppc_md.tce_flush = dart_flush;
291 311
292 /* Initialize the DART HW */ 312 /* Initialize the DART HW */
293 if (dart_init(dn)) { 313 if (dart_init(dn) == 0) {
294 /* If init failed, use direct iommu and null setup functions */ 314 ppc_md.iommu_dev_setup = iommu_dev_setup_dart;
295 ppc_md.iommu_dev_setup = iommu_dev_setup_null; 315 ppc_md.iommu_bus_setup = iommu_bus_setup_dart;
296 ppc_md.iommu_bus_setup = iommu_bus_setup_null;
297
298 /* Setup pci_dma ops */
299 pci_direct_iommu_init();
300 } else {
301 ppc_md.iommu_dev_setup = iommu_dev_setup_u3;
302 ppc_md.iommu_bus_setup = iommu_bus_setup_u3;
303 316
304 /* Setup pci_dma ops */ 317 /* Setup pci_dma ops */
305 pci_iommu_init(); 318 pci_iommu_init();
319
320 return;
306 } 321 }
322
323 bail:
324 /* If init failed, use direct iommu and null setup functions */
325 ppc_md.iommu_dev_setup = iommu_dev_setup_null;
326 ppc_md.iommu_bus_setup = iommu_bus_setup_null;
327
328 /* Setup pci_dma ops */
329 pci_direct_iommu_init();
307} 330}
308 331
309 332
310void __init alloc_u3_dart_table(void) 333void __init alloc_dart_table(void)
311{ 334{
312 /* Only reserve DART space if machine has more than 2GB of RAM 335 /* Only reserve DART space if machine has more than 2GB of RAM
313 * or if requested with iommu=on on cmdline. 336 * or if requested with iommu=on on cmdline.
@@ -323,5 +346,5 @@ void __init alloc_u3_dart_table(void)
323 dart_tablebase = (unsigned long) 346 dart_tablebase = (unsigned long)
324 abs_to_virt(lmb_alloc_base(1UL<<24, 1UL<<24, 0x80000000L)); 347 abs_to_virt(lmb_alloc_base(1UL<<24, 1UL<<24, 0x80000000L));
325 348
326 printk(KERN_INFO "U3-DART allocated at: %lx\n", dart_tablebase); 349 printk(KERN_INFO "DART table allocated at: %lx\n", dart_tablebase);
327} 350}
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 9513ea78e6c1..4f26304d0263 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -13,6 +13,9 @@
13 */ 13 */
14 14
15#undef DEBUG 15#undef DEBUG
16#undef DEBUG_IPI
17#undef DEBUG_IRQ
18#undef DEBUG_LOW
16 19
17#include <linux/config.h> 20#include <linux/config.h>
18#include <linux/types.h> 21#include <linux/types.h>
@@ -168,35 +171,86 @@ static void __init mpic_test_broken_ipi(struct mpic *mpic)
168/* Test if an interrupt is sourced from HyperTransport (used on broken U3s) 171/* Test if an interrupt is sourced from HyperTransport (used on broken U3s)
169 * to force the edge setting on the MPIC and do the ack workaround. 172 * to force the edge setting on the MPIC and do the ack workaround.
170 */ 173 */
171static inline int mpic_is_ht_interrupt(struct mpic *mpic, unsigned int source_no) 174static inline int mpic_is_ht_interrupt(struct mpic *mpic, unsigned int source)
172{ 175{
173 if (source_no >= 128 || !mpic->fixups) 176 if (source >= 128 || !mpic->fixups)
174 return 0; 177 return 0;
175 return mpic->fixups[source_no].base != NULL; 178 return mpic->fixups[source].base != NULL;
176} 179}
177 180
178 181
179static inline void mpic_apic_end_irq(struct mpic *mpic, unsigned int source_no) 182static inline void mpic_ht_end_irq(struct mpic *mpic, unsigned int source)
180{ 183{
181 struct mpic_irq_fixup *fixup = &mpic->fixups[source_no]; 184 struct mpic_irq_fixup *fixup = &mpic->fixups[source];
182 185
183 spin_lock(&mpic->fixup_lock); 186 if (fixup->applebase) {
184 writeb(0x11 + 2 * fixup->irq, fixup->base + 2); 187 unsigned int soff = (fixup->index >> 3) & ~3;
185 writel(fixup->data, fixup->base + 4); 188 unsigned int mask = 1U << (fixup->index & 0x1f);
186 spin_unlock(&mpic->fixup_lock); 189 writel(mask, fixup->applebase + soff);
190 } else {
191 spin_lock(&mpic->fixup_lock);
192 writeb(0x11 + 2 * fixup->index, fixup->base + 2);
193 writel(fixup->data, fixup->base + 4);
194 spin_unlock(&mpic->fixup_lock);
195 }
187} 196}
188 197
198static void mpic_startup_ht_interrupt(struct mpic *mpic, unsigned int source,
199 unsigned int irqflags)
200{
201 struct mpic_irq_fixup *fixup = &mpic->fixups[source];
202 unsigned long flags;
203 u32 tmp;
204
205 if (fixup->base == NULL)
206 return;
207
208 DBG("startup_ht_interrupt(%u, %u) index: %d\n",
209 source, irqflags, fixup->index);
210 spin_lock_irqsave(&mpic->fixup_lock, flags);
211 /* Enable and configure */
212 writeb(0x10 + 2 * fixup->index, fixup->base + 2);
213 tmp = readl(fixup->base + 4);
214 tmp &= ~(0x23U);
215 if (irqflags & IRQ_LEVEL)
216 tmp |= 0x22;
217 writel(tmp, fixup->base + 4);
218 spin_unlock_irqrestore(&mpic->fixup_lock, flags);
219}
220
221static void mpic_shutdown_ht_interrupt(struct mpic *mpic, unsigned int source,
222 unsigned int irqflags)
223{
224 struct mpic_irq_fixup *fixup = &mpic->fixups[source];
225 unsigned long flags;
226 u32 tmp;
227
228 if (fixup->base == NULL)
229 return;
230
231 DBG("shutdown_ht_interrupt(%u, %u)\n", source, irqflags);
232
233 /* Disable */
234 spin_lock_irqsave(&mpic->fixup_lock, flags);
235 writeb(0x10 + 2 * fixup->index, fixup->base + 2);
236 tmp = readl(fixup->base + 4);
237 tmp &= ~1U;
238 writel(tmp, fixup->base + 4);
239 spin_unlock_irqrestore(&mpic->fixup_lock, flags);
240}
189 241
190static void __init mpic_scan_ioapic(struct mpic *mpic, u8 __iomem *devbase) 242static void __init mpic_scan_ht_pic(struct mpic *mpic, u8 __iomem *devbase,
243 unsigned int devfn, u32 vdid)
191{ 244{
192 int i, irq, n; 245 int i, irq, n;
246 u8 __iomem *base;
193 u32 tmp; 247 u32 tmp;
194 u8 pos; 248 u8 pos;
195 249
196 for (pos = readb(devbase + 0x34); pos; pos = readb(devbase + pos + 1)) { 250 for (pos = readb(devbase + PCI_CAPABILITY_LIST); pos != 0;
197 u8 id = readb(devbase + pos); 251 pos = readb(devbase + pos + PCI_CAP_LIST_NEXT)) {
198 252 u8 id = readb(devbase + pos + PCI_CAP_LIST_ID);
199 if (id == 0x08) { 253 if (id == PCI_CAP_ID_HT_IRQCONF) {
200 id = readb(devbase + pos + 3); 254 id = readb(devbase + pos + 3);
201 if (id == 0x80) 255 if (id == 0x80)
202 break; 256 break;
@@ -205,33 +259,41 @@ static void __init mpic_scan_ioapic(struct mpic *mpic, u8 __iomem *devbase)
205 if (pos == 0) 259 if (pos == 0)
206 return; 260 return;
207 261
208 printk(KERN_INFO "mpic: - Workarounds @ %p, pos = 0x%02x\n", devbase, pos); 262 base = devbase + pos;
263 writeb(0x01, base + 2);
264 n = (readl(base + 4) >> 16) & 0xff;
209 265
210 devbase += pos; 266 printk(KERN_INFO "mpic: - HT:%02x.%x [0x%02x] vendor %04x device %04x"
211 267 " has %d irqs\n",
212 writeb(0x01, devbase + 2); 268 devfn >> 3, devfn & 0x7, pos, vdid & 0xffff, vdid >> 16, n + 1);
213 n = (readl(devbase + 4) >> 16) & 0xff;
214 269
215 for (i = 0; i <= n; i++) { 270 for (i = 0; i <= n; i++) {
216 writeb(0x10 + 2 * i, devbase + 2); 271 writeb(0x10 + 2 * i, base + 2);
217 tmp = readl(devbase + 4); 272 tmp = readl(base + 4);
218 if ((tmp & 0x21) != 0x20)
219 continue;
220 irq = (tmp >> 16) & 0xff; 273 irq = (tmp >> 16) & 0xff;
221 mpic->fixups[irq].irq = i; 274 DBG("HT PIC index 0x%x, irq 0x%x, tmp: %08x\n", i, irq, tmp);
222 mpic->fixups[irq].base = devbase; 275 /* mask it , will be unmasked later */
223 writeb(0x11 + 2 * i, devbase + 2); 276 tmp |= 0x1;
224 mpic->fixups[irq].data = readl(devbase + 4) | 0x80000000; 277 writel(tmp, base + 4);
278 mpic->fixups[irq].index = i;
279 mpic->fixups[irq].base = base;
280 /* Apple HT PIC has a non-standard way of doing EOIs */
281 if ((vdid & 0xffff) == 0x106b)
282 mpic->fixups[irq].applebase = devbase + 0x60;
283 else
284 mpic->fixups[irq].applebase = NULL;
285 writeb(0x11 + 2 * i, base + 2);
286 mpic->fixups[irq].data = readl(base + 4) | 0x80000000;
225 } 287 }
226} 288}
227 289
228 290
229static void __init mpic_scan_ioapics(struct mpic *mpic) 291static void __init mpic_scan_ht_pics(struct mpic *mpic)
230{ 292{
231 unsigned int devfn; 293 unsigned int devfn;
232 u8 __iomem *cfgspace; 294 u8 __iomem *cfgspace;
233 295
234 printk(KERN_INFO "mpic: Setting up IO-APICs workarounds for U3\n"); 296 printk(KERN_INFO "mpic: Setting up HT PICs workarounds for U3/U4\n");
235 297
236 /* Allocate fixups array */ 298 /* Allocate fixups array */
237 mpic->fixups = alloc_bootmem(128 * sizeof(struct mpic_irq_fixup)); 299 mpic->fixups = alloc_bootmem(128 * sizeof(struct mpic_irq_fixup));
@@ -247,13 +309,14 @@ static void __init mpic_scan_ioapics(struct mpic *mpic)
247 cfgspace = ioremap(0xf2000000, 0x10000); 309 cfgspace = ioremap(0xf2000000, 0x10000);
248 BUG_ON(cfgspace == NULL); 310 BUG_ON(cfgspace == NULL);
249 311
250 /* Now we scan all slots. We do a very quick scan, we read the header type, 312 /* Now we scan all slots. We do a very quick scan, we read the header
251 * vendor ID and device ID only, that's plenty enough 313 * type, vendor ID and device ID only, that's plenty enough
252 */ 314 */
253 for (devfn = 0; devfn < 0x100; devfn++) { 315 for (devfn = 0; devfn < 0x100; devfn++) {
254 u8 __iomem *devbase = cfgspace + (devfn << 8); 316 u8 __iomem *devbase = cfgspace + (devfn << 8);
255 u8 hdr_type = readb(devbase + PCI_HEADER_TYPE); 317 u8 hdr_type = readb(devbase + PCI_HEADER_TYPE);
256 u32 l = readl(devbase + PCI_VENDOR_ID); 318 u32 l = readl(devbase + PCI_VENDOR_ID);
319 u16 s;
257 320
258 DBG("devfn %x, l: %x\n", devfn, l); 321 DBG("devfn %x, l: %x\n", devfn, l);
259 322
@@ -261,8 +324,12 @@ static void __init mpic_scan_ioapics(struct mpic *mpic)
261 if (l == 0xffffffff || l == 0x00000000 || 324 if (l == 0xffffffff || l == 0x00000000 ||
262 l == 0x0000ffff || l == 0xffff0000) 325 l == 0x0000ffff || l == 0xffff0000)
263 goto next; 326 goto next;
327 /* Check if is supports capability lists */
328 s = readw(devbase + PCI_STATUS);
329 if (!(s & PCI_STATUS_CAP_LIST))
330 goto next;
264 331
265 mpic_scan_ioapic(mpic, devbase); 332 mpic_scan_ht_pic(mpic, devbase, devfn, l);
266 333
267 next: 334 next:
268 /* next device, if function 0 */ 335 /* next device, if function 0 */
@@ -363,6 +430,31 @@ static void mpic_enable_irq(unsigned int irq)
363 break; 430 break;
364 } 431 }
365 } while(mpic_irq_read(src, MPIC_IRQ_VECTOR_PRI) & MPIC_VECPRI_MASK); 432 } while(mpic_irq_read(src, MPIC_IRQ_VECTOR_PRI) & MPIC_VECPRI_MASK);
433
434#ifdef CONFIG_MPIC_BROKEN_U3
435 if (mpic->flags & MPIC_BROKEN_U3) {
436 unsigned int src = irq - mpic->irq_offset;
437 if (mpic_is_ht_interrupt(mpic, src) &&
438 (irq_desc[irq].status & IRQ_LEVEL))
439 mpic_ht_end_irq(mpic, src);
440 }
441#endif /* CONFIG_MPIC_BROKEN_U3 */
442}
443
444static unsigned int mpic_startup_irq(unsigned int irq)
445{
446#ifdef CONFIG_MPIC_BROKEN_U3
447 struct mpic *mpic = mpic_from_irq(irq);
448 unsigned int src = irq - mpic->irq_offset;
449
450 if (mpic_is_ht_interrupt(mpic, src))
451 mpic_startup_ht_interrupt(mpic, src, irq_desc[irq].status);
452
453#endif /* CONFIG_MPIC_BROKEN_U3 */
454
455 mpic_enable_irq(irq);
456
457 return 0;
366} 458}
367 459
368static void mpic_disable_irq(unsigned int irq) 460static void mpic_disable_irq(unsigned int irq)
@@ -386,12 +478,27 @@ static void mpic_disable_irq(unsigned int irq)
386 } while(!(mpic_irq_read(src, MPIC_IRQ_VECTOR_PRI) & MPIC_VECPRI_MASK)); 478 } while(!(mpic_irq_read(src, MPIC_IRQ_VECTOR_PRI) & MPIC_VECPRI_MASK));
387} 479}
388 480
481static void mpic_shutdown_irq(unsigned int irq)
482{
483#ifdef CONFIG_MPIC_BROKEN_U3
484 struct mpic *mpic = mpic_from_irq(irq);
485 unsigned int src = irq - mpic->irq_offset;
486
487 if (mpic_is_ht_interrupt(mpic, src))
488 mpic_shutdown_ht_interrupt(mpic, src, irq_desc[irq].status);
489
490#endif /* CONFIG_MPIC_BROKEN_U3 */
491
492 mpic_disable_irq(irq);
493}
494
389static void mpic_end_irq(unsigned int irq) 495static void mpic_end_irq(unsigned int irq)
390{ 496{
391 struct mpic *mpic = mpic_from_irq(irq); 497 struct mpic *mpic = mpic_from_irq(irq);
392 498
499#ifdef DEBUG_IRQ
393 DBG("%s: end_irq: %d\n", mpic->name, irq); 500 DBG("%s: end_irq: %d\n", mpic->name, irq);
394 501#endif
395 /* We always EOI on end_irq() even for edge interrupts since that 502 /* We always EOI on end_irq() even for edge interrupts since that
396 * should only lower the priority, the MPIC should have properly 503 * should only lower the priority, the MPIC should have properly
397 * latched another edge interrupt coming in anyway 504 * latched another edge interrupt coming in anyway
@@ -400,8 +507,9 @@ static void mpic_end_irq(unsigned int irq)
400#ifdef CONFIG_MPIC_BROKEN_U3 507#ifdef CONFIG_MPIC_BROKEN_U3
401 if (mpic->flags & MPIC_BROKEN_U3) { 508 if (mpic->flags & MPIC_BROKEN_U3) {
402 unsigned int src = irq - mpic->irq_offset; 509 unsigned int src = irq - mpic->irq_offset;
403 if (mpic_is_ht_interrupt(mpic, src)) 510 if (mpic_is_ht_interrupt(mpic, src) &&
404 mpic_apic_end_irq(mpic, src); 511 (irq_desc[irq].status & IRQ_LEVEL))
512 mpic_ht_end_irq(mpic, src);
405 } 513 }
406#endif /* CONFIG_MPIC_BROKEN_U3 */ 514#endif /* CONFIG_MPIC_BROKEN_U3 */
407 515
@@ -482,6 +590,8 @@ struct mpic * __init mpic_alloc(unsigned long phys_addr,
482 mpic->name = name; 590 mpic->name = name;
483 591
484 mpic->hc_irq.typename = name; 592 mpic->hc_irq.typename = name;
593 mpic->hc_irq.startup = mpic_startup_irq;
594 mpic->hc_irq.shutdown = mpic_shutdown_irq;
485 mpic->hc_irq.enable = mpic_enable_irq; 595 mpic->hc_irq.enable = mpic_enable_irq;
486 mpic->hc_irq.disable = mpic_disable_irq; 596 mpic->hc_irq.disable = mpic_disable_irq;
487 mpic->hc_irq.end = mpic_end_irq; 597 mpic->hc_irq.end = mpic_end_irq;
@@ -650,10 +760,10 @@ void __init mpic_init(struct mpic *mpic)
650 mpic->irq_count = mpic->num_sources; 760 mpic->irq_count = mpic->num_sources;
651 761
652#ifdef CONFIG_MPIC_BROKEN_U3 762#ifdef CONFIG_MPIC_BROKEN_U3
653 /* Do the ioapic fixups on U3 broken mpic */ 763 /* Do the HT PIC fixups on U3 broken mpic */
654 DBG("MPIC flags: %x\n", mpic->flags); 764 DBG("MPIC flags: %x\n", mpic->flags);
655 if ((mpic->flags & MPIC_BROKEN_U3) && (mpic->flags & MPIC_PRIMARY)) 765 if ((mpic->flags & MPIC_BROKEN_U3) && (mpic->flags & MPIC_PRIMARY))
656 mpic_scan_ioapics(mpic); 766 mpic_scan_ht_pics(mpic);
657#endif /* CONFIG_MPIC_BROKEN_U3 */ 767#endif /* CONFIG_MPIC_BROKEN_U3 */
658 768
659 for (i = 0; i < mpic->num_sources; i++) { 769 for (i = 0; i < mpic->num_sources; i++) {
@@ -840,7 +950,9 @@ void mpic_send_ipi(unsigned int ipi_no, unsigned int cpu_mask)
840 950
841 BUG_ON(mpic == NULL); 951 BUG_ON(mpic == NULL);
842 952
953#ifdef DEBUG_IPI
843 DBG("%s: send_ipi(ipi_no: %d)\n", mpic->name, ipi_no); 954 DBG("%s: send_ipi(ipi_no: %d)\n", mpic->name, ipi_no);
955#endif
844 956
845 mpic_cpu_write(MPIC_CPU_IPI_DISPATCH_0 + ipi_no * 0x10, 957 mpic_cpu_write(MPIC_CPU_IPI_DISPATCH_0 + ipi_no * 0x10,
846 mpic_physmask(cpu_mask & cpus_addr(cpu_online_map)[0])); 958 mpic_physmask(cpu_mask & cpus_addr(cpu_online_map)[0]));
@@ -851,19 +963,28 @@ int mpic_get_one_irq(struct mpic *mpic, struct pt_regs *regs)
851 u32 irq; 963 u32 irq;
852 964
853 irq = mpic_cpu_read(MPIC_CPU_INTACK) & MPIC_VECPRI_VECTOR_MASK; 965 irq = mpic_cpu_read(MPIC_CPU_INTACK) & MPIC_VECPRI_VECTOR_MASK;
966#ifdef DEBUG_LOW
854 DBG("%s: get_one_irq(): %d\n", mpic->name, irq); 967 DBG("%s: get_one_irq(): %d\n", mpic->name, irq);
855 968#endif
856 if (mpic->cascade && irq == mpic->cascade_vec) { 969 if (mpic->cascade && irq == mpic->cascade_vec) {
970#ifdef DEBUG_LOW
857 DBG("%s: cascading ...\n", mpic->name); 971 DBG("%s: cascading ...\n", mpic->name);
972#endif
858 irq = mpic->cascade(regs, mpic->cascade_data); 973 irq = mpic->cascade(regs, mpic->cascade_data);
859 mpic_eoi(mpic); 974 mpic_eoi(mpic);
860 return irq; 975 return irq;
861 } 976 }
862 if (unlikely(irq == MPIC_VEC_SPURRIOUS)) 977 if (unlikely(irq == MPIC_VEC_SPURRIOUS))
863 return -1; 978 return -1;
864 if (irq < MPIC_VEC_IPI_0) 979 if (irq < MPIC_VEC_IPI_0) {
980#ifdef DEBUG_IRQ
981 DBG("%s: irq %d\n", mpic->name, irq + mpic->irq_offset);
982#endif
865 return irq + mpic->irq_offset; 983 return irq + mpic->irq_offset;
984 }
985#ifdef DEBUG_IPI
866 DBG("%s: ipi %d !\n", mpic->name, irq - MPIC_VEC_IPI_0); 986 DBG("%s: ipi %d !\n", mpic->name, irq - MPIC_VEC_IPI_0);
987#endif
867 return irq - MPIC_VEC_IPI_0 + mpic->ipi_offset; 988 return irq - MPIC_VEC_IPI_0 + mpic->ipi_offset;
868} 989}
869 990
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-30 00:39:55 -0400