aboutsummaryrefslogtreecommitdiffstats
path: root/arch/mips/mti-malta
diff options
context:
space:
mode:
authorPaul Mundt <lethal@linux-sh.org>2009-11-04 02:10:35 -0500
committerPaul Mundt <lethal@linux-sh.org>2009-11-04 02:10:35 -0500
commitb6d0137d6156db54a9e6ff74458ed4342a45abb5 (patch)
treeae4139b2af5af7e382208645d4b66ff184c1e53a /arch/mips/mti-malta
parent5c1a56b5f616f7063f91eb85f0ea209658f387dc (diff)
parent51bb296b09a83ee1aae025778db38f9d2cc7bb1a (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/mips/mti-malta')
-rw-r--r--arch/mips/mti-malta/malta-amon.c7
-rw-r--r--arch/mips/mti-malta/malta-int.c119
-rw-r--r--arch/mips/mti-malta/malta-pci.c27
3 files changed, 100 insertions, 53 deletions
diff --git a/arch/mips/mti-malta/malta-amon.c b/arch/mips/mti-malta/malta-amon.c
index df9e526312a2..469d9b0cee6d 100644
--- a/arch/mips/mti-malta/malta-amon.c
+++ b/arch/mips/mti-malta/malta-amon.c
@@ -70,11 +70,12 @@ void amon_cpu_start(int cpu,
70 launch->sp = sp; 70 launch->sp = sp;
71 launch->a0 = a0; 71 launch->a0 = a0;
72 72
73 /* Make sure target sees parameters before the go bit */ 73 smp_wmb(); /* Target must see parameters before go */
74 smp_mb();
75
76 launch->flags |= LAUNCH_FGO; 74 launch->flags |= LAUNCH_FGO;
75 smp_wmb(); /* Target must see go before we poll */
76
77 while ((launch->flags & LAUNCH_FGONE) == 0) 77 while ((launch->flags & LAUNCH_FGONE) == 0)
78 ; 78 ;
79 smp_rmb(); /* Target will be updating flags soon */
79 pr_debug("launch: cpu%d gone!\n", cpu); 80 pr_debug("launch: cpu%d gone!\n", cpu);
80} 81}
diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c
index 3e0a9b35ba5c..4c3fca18a171 100644
--- a/arch/mips/mti-malta/malta-int.c
+++ b/arch/mips/mti-malta/malta-int.c
@@ -87,7 +87,7 @@ static inline int mips_pcibios_iack(void)
87 dummy = BONITO_PCIMAP_CFG; 87 dummy = BONITO_PCIMAP_CFG;
88 iob(); /* sync */ 88 iob(); /* sync */
89 89
90 irq = readl((u32 *)_pcictrl_bonito_pcicfg); 90 irq = __raw_readl((u32 *)_pcictrl_bonito_pcicfg);
91 iob(); /* sync */ 91 iob(); /* sync */
92 irq &= 0xff; 92 irq &= 0xff;
93 BONITO_PCIMAP_CFG = 0; 93 BONITO_PCIMAP_CFG = 0;
@@ -379,38 +379,43 @@ static msc_irqmap_t __initdata msc_eicirqmap[] = {
379 379
380static int __initdata msc_nr_eicirqs = ARRAY_SIZE(msc_eicirqmap); 380static int __initdata msc_nr_eicirqs = ARRAY_SIZE(msc_eicirqmap);
381 381
382#if defined(CONFIG_MIPS_MT_SMP)
383/* 382/*
384 * This GIC specific tabular array defines the association between External 383 * This GIC specific tabular array defines the association between External
385 * Interrupts and CPUs/Core Interrupts. The nature of the External 384 * Interrupts and CPUs/Core Interrupts. The nature of the External
386 * Interrupts is also defined here - polarity/trigger. 385 * Interrupts is also defined here - polarity/trigger.
387 */ 386 */
387
388#define GIC_CPU_NMI GIC_MAP_TO_NMI_MSK
388static struct gic_intr_map gic_intr_map[GIC_NUM_INTRS] = { 389static struct gic_intr_map gic_intr_map[GIC_NUM_INTRS] = {
389 { GIC_EXT_INTR(0), X, X, X, X, 0 }, 390 { X, X, X, X, 0 },
390 { GIC_EXT_INTR(1), X, X, X, X, 0 }, 391 { X, X, X, X, 0 },
391 { GIC_EXT_INTR(2), X, X, X, X, 0 }, 392 { X, X, X, X, 0 },
392 { GIC_EXT_INTR(3), 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, 0 }, 393 { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
393 { GIC_EXT_INTR(4), 0, GIC_CPU_INT1, GIC_POL_POS, GIC_TRIG_LEVEL, 0 }, 394 { 0, GIC_CPU_INT1, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
394 { GIC_EXT_INTR(5), 0, GIC_CPU_INT2, GIC_POL_POS, GIC_TRIG_LEVEL, 0 }, 395 { 0, GIC_CPU_INT2, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
395 { GIC_EXT_INTR(6), 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, 0 }, 396 { 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
396 { GIC_EXT_INTR(7), 0, GIC_CPU_INT4, GIC_POL_POS, GIC_TRIG_LEVEL, 0 }, 397 { 0, GIC_CPU_INT4, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
397 { GIC_EXT_INTR(8), 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, 0 }, 398 { 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
398 { GIC_EXT_INTR(9), 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, 0 }, 399 { 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
399 { GIC_EXT_INTR(10), X, X, X, X, 0 }, 400 { X, X, X, X, 0 },
400 { GIC_EXT_INTR(11), X, X, X, X, 0 }, 401 { X, X, X, X, 0 },
401 { GIC_EXT_INTR(12), 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, 0 }, 402 { 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
402 { GIC_EXT_INTR(13), 0, GIC_MAP_TO_NMI_MSK, GIC_POL_POS, GIC_TRIG_LEVEL, 0 }, 403 { 0, GIC_CPU_NMI, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
403 { GIC_EXT_INTR(14), 0, GIC_MAP_TO_NMI_MSK, GIC_POL_POS, GIC_TRIG_LEVEL, 0 }, 404 { 0, GIC_CPU_NMI, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT },
404 { GIC_EXT_INTR(15), X, X, X, X, 0 }, 405 { X, X, X, X, 0 },
405/* This is the end of the general interrupts now we do IPI ones */ 406 /* The remainder of this table is initialised by fill_ipi_map */
406}; 407};
407#endif
408 408
409/* 409/*
410 * GCMP needs to be detected before any SMP initialisation 410 * GCMP needs to be detected before any SMP initialisation
411 */ 411 */
412int __init gcmp_probe(unsigned long addr, unsigned long size) 412int __init gcmp_probe(unsigned long addr, unsigned long size)
413{ 413{
414 if (mips_revision_sconid != MIPS_REVISION_SCON_ROCIT) {
415 gcmp_present = 0;
416 return gcmp_present;
417 }
418
414 if (gcmp_present >= 0) 419 if (gcmp_present >= 0)
415 return gcmp_present; 420 return gcmp_present;
416 421
@@ -419,20 +424,35 @@ int __init gcmp_probe(unsigned long addr, unsigned long size)
419 gcmp_present = (GCMPGCB(GCMPB) & GCMP_GCB_GCMPB_GCMPBASE_MSK) == GCMP_BASE_ADDR; 424 gcmp_present = (GCMPGCB(GCMPB) & GCMP_GCB_GCMPB_GCMPBASE_MSK) == GCMP_BASE_ADDR;
420 425
421 if (gcmp_present) 426 if (gcmp_present)
422 printk(KERN_DEBUG "GCMP present\n"); 427 pr_debug("GCMP present\n");
423 return gcmp_present; 428 return gcmp_present;
424} 429}
425 430
431/* Return the number of IOCU's present */
432int __init gcmp_niocu(void)
433{
434 return gcmp_present ?
435 (GCMPGCB(GC) & GCMP_GCB_GC_NUMIOCU_MSK) >> GCMP_GCB_GC_NUMIOCU_SHF :
436 0;
437}
438
439/* Set GCMP region attributes */
440void __init gcmp_setregion(int region, unsigned long base,
441 unsigned long mask, int type)
442{
443 GCMPGCBn(CMxBASE, region) = base;
444 GCMPGCBn(CMxMASK, region) = mask | type;
445}
446
426#if defined(CONFIG_MIPS_MT_SMP) 447#if defined(CONFIG_MIPS_MT_SMP)
427static void __init fill_ipi_map1(int baseintr, int cpu, int cpupin) 448static void __init fill_ipi_map1(int baseintr, int cpu, int cpupin)
428{ 449{
429 int intr = baseintr + cpu; 450 int intr = baseintr + cpu;
430 gic_intr_map[intr].intrnum = GIC_EXT_INTR(intr);
431 gic_intr_map[intr].cpunum = cpu; 451 gic_intr_map[intr].cpunum = cpu;
432 gic_intr_map[intr].pin = cpupin; 452 gic_intr_map[intr].pin = cpupin;
433 gic_intr_map[intr].polarity = GIC_POL_POS; 453 gic_intr_map[intr].polarity = GIC_POL_POS;
434 gic_intr_map[intr].trigtype = GIC_TRIG_EDGE; 454 gic_intr_map[intr].trigtype = GIC_TRIG_EDGE;
435 gic_intr_map[intr].ipiflag = 1; 455 gic_intr_map[intr].flags = GIC_FLAG_IPI;
436 ipi_map[cpu] |= (1 << (cpupin + 2)); 456 ipi_map[cpu] |= (1 << (cpupin + 2));
437} 457}
438 458
@@ -447,6 +467,12 @@ static void __init fill_ipi_map(void)
447} 467}
448#endif 468#endif
449 469
470void __init arch_init_ipiirq(int irq, struct irqaction *action)
471{
472 setup_irq(irq, action);
473 set_irq_handler(irq, handle_percpu_irq);
474}
475
450void __init arch_init_irq(void) 476void __init arch_init_irq(void)
451{ 477{
452 init_i8259_irqs(); 478 init_i8259_irqs();
@@ -458,12 +484,17 @@ void __init arch_init_irq(void)
458 GCMPGCB(GICBA) = GIC_BASE_ADDR | GCMP_GCB_GICBA_EN_MSK; 484 GCMPGCB(GICBA) = GIC_BASE_ADDR | GCMP_GCB_GICBA_EN_MSK;
459 gic_present = 1; 485 gic_present = 1;
460 } else { 486 } else {
461 _msc01_biu_base = (unsigned long) ioremap_nocache(MSC01_BIU_REG_BASE, MSC01_BIU_ADDRSPACE_SZ); 487 if (mips_revision_sconid == MIPS_REVISION_SCON_ROCIT) {
462 gic_present = (REG(_msc01_biu_base, MSC01_SC_CFG) & 488 _msc01_biu_base = (unsigned long)
463 MSC01_SC_CFG_GICPRES_MSK) >> MSC01_SC_CFG_GICPRES_SHF; 489 ioremap_nocache(MSC01_BIU_REG_BASE,
490 MSC01_BIU_ADDRSPACE_SZ);
491 gic_present = (REG(_msc01_biu_base, MSC01_SC_CFG) &
492 MSC01_SC_CFG_GICPRES_MSK) >>
493 MSC01_SC_CFG_GICPRES_SHF;
494 }
464 } 495 }
465 if (gic_present) 496 if (gic_present)
466 printk(KERN_DEBUG "GIC present\n"); 497 pr_debug("GIC present\n");
467 498
468 switch (mips_revision_sconid) { 499 switch (mips_revision_sconid) {
469 case MIPS_REVISION_SCON_SOCIT: 500 case MIPS_REVISION_SCON_SOCIT:
@@ -526,16 +557,16 @@ void __init arch_init_irq(void)
526 &corehi_irqaction); 557 &corehi_irqaction);
527 } 558 }
528 559
529#if defined(CONFIG_MIPS_MT_SMP)
530 if (gic_present) { 560 if (gic_present) {
531 /* FIXME */ 561 /* FIXME */
532 int i; 562 int i;
533 563#if defined(CONFIG_MIPS_MT_SMP)
534 gic_call_int_base = GIC_NUM_INTRS - NR_CPUS; 564 gic_call_int_base = GIC_NUM_INTRS - NR_CPUS;
535 gic_resched_int_base = gic_call_int_base - NR_CPUS; 565 gic_resched_int_base = gic_call_int_base - NR_CPUS;
536
537 fill_ipi_map(); 566 fill_ipi_map();
538 gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, gic_intr_map, ARRAY_SIZE(gic_intr_map), MIPS_GIC_IRQ_BASE); 567#endif
568 gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, gic_intr_map,
569 ARRAY_SIZE(gic_intr_map), MIPS_GIC_IRQ_BASE);
539 if (!gcmp_present) { 570 if (!gcmp_present) {
540 /* Enable the GIC */ 571 /* Enable the GIC */
541 i = REG(_msc01_biu_base, MSC01_SC_CFG); 572 i = REG(_msc01_biu_base, MSC01_SC_CFG);
@@ -543,7 +574,7 @@ void __init arch_init_irq(void)
543 (i | (0x1 << MSC01_SC_CFG_GICENA_SHF)); 574 (i | (0x1 << MSC01_SC_CFG_GICENA_SHF));
544 pr_debug("GIC Enabled\n"); 575 pr_debug("GIC Enabled\n");
545 } 576 }
546 577#if defined(CONFIG_MIPS_MT_SMP)
547 /* set up ipi interrupts */ 578 /* set up ipi interrupts */
548 if (cpu_has_vint) { 579 if (cpu_has_vint) {
549 set_vi_handler(MIPSCPU_INT_IPI0, malta_ipi_irqdispatch); 580 set_vi_handler(MIPSCPU_INT_IPI0, malta_ipi_irqdispatch);
@@ -556,16 +587,14 @@ void __init arch_init_irq(void)
556 write_c0_status(0x1100dc00); 587 write_c0_status(0x1100dc00);
557 printk("CPU%d: status register frc %08x\n", smp_processor_id(), read_c0_status()); 588 printk("CPU%d: status register frc %08x\n", smp_processor_id(), read_c0_status());
558 for (i = 0; i < NR_CPUS; i++) { 589 for (i = 0; i < NR_CPUS; i++) {
559 setup_irq(MIPS_GIC_IRQ_BASE + 590 arch_init_ipiirq(MIPS_GIC_IRQ_BASE +
560 GIC_RESCHED_INT(i), &irq_resched); 591 GIC_RESCHED_INT(i), &irq_resched);
561 setup_irq(MIPS_GIC_IRQ_BASE + 592 arch_init_ipiirq(MIPS_GIC_IRQ_BASE +
562 GIC_CALL_INT(i), &irq_call); 593 GIC_CALL_INT(i), &irq_call);
563 set_irq_handler(MIPS_GIC_IRQ_BASE +
564 GIC_RESCHED_INT(i), handle_percpu_irq);
565 set_irq_handler(MIPS_GIC_IRQ_BASE +
566 GIC_CALL_INT(i), handle_percpu_irq);
567 } 594 }
595#endif
568 } else { 596 } else {
597#if defined(CONFIG_MIPS_MT_SMP)
569 /* set up ipi interrupts */ 598 /* set up ipi interrupts */
570 if (cpu_has_veic) { 599 if (cpu_has_veic) {
571 set_vi_handler (MSC01E_INT_SW0, ipi_resched_dispatch); 600 set_vi_handler (MSC01E_INT_SW0, ipi_resched_dispatch);
@@ -580,14 +609,10 @@ void __init arch_init_irq(void)
580 cpu_ipi_resched_irq = MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_RESCHED_IRQ; 609 cpu_ipi_resched_irq = MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_RESCHED_IRQ;
581 cpu_ipi_call_irq = MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_CALL_IRQ; 610 cpu_ipi_call_irq = MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_CALL_IRQ;
582 } 611 }
583 612 arch_init_ipiirq(cpu_ipi_resched_irq, &irq_resched);
584 setup_irq(cpu_ipi_resched_irq, &irq_resched); 613 arch_init_ipiirq(cpu_ipi_call_irq, &irq_call);
585 setup_irq(cpu_ipi_call_irq, &irq_call);
586
587 set_irq_handler(cpu_ipi_resched_irq, handle_percpu_irq);
588 set_irq_handler(cpu_ipi_call_irq, handle_percpu_irq);
589 }
590#endif 614#endif
615 }
591} 616}
592 617
593void malta_be_init(void) 618void malta_be_init(void)
diff --git a/arch/mips/mti-malta/malta-pci.c b/arch/mips/mti-malta/malta-pci.c
index b9743190609a..2fbfa1a8c3a9 100644
--- a/arch/mips/mti-malta/malta-pci.c
+++ b/arch/mips/mti-malta/malta-pci.c
@@ -27,7 +27,7 @@
27#include <linux/init.h> 27#include <linux/init.h>
28 28
29#include <asm/gt64120.h> 29#include <asm/gt64120.h>
30 30#include <asm/gcmpregs.h>
31#include <asm/mips-boards/generic.h> 31#include <asm/mips-boards/generic.h>
32#include <asm/mips-boards/bonito64.h> 32#include <asm/mips-boards/bonito64.h>
33#include <asm/mips-boards/msc01_pci.h> 33#include <asm/mips-boards/msc01_pci.h>
@@ -201,7 +201,11 @@ void __init mips_pcibios_init(void)
201 msc_mem_resource.start = start & mask; 201 msc_mem_resource.start = start & mask;
202 msc_mem_resource.end = (start & mask) | ~mask; 202 msc_mem_resource.end = (start & mask) | ~mask;
203 msc_controller.mem_offset = (start & mask) - (map & mask); 203 msc_controller.mem_offset = (start & mask) - (map & mask);
204 204#ifdef CONFIG_MIPS_CMP
205 if (gcmp_niocu())
206 gcmp_setregion(0, start, mask,
207 GCMP_GCB_GCMPB_CMDEFTGT_IOCU1);
208#endif
205 MSC_READ(MSC01_PCI_SC2PIOBASL, start); 209 MSC_READ(MSC01_PCI_SC2PIOBASL, start);
206 MSC_READ(MSC01_PCI_SC2PIOMSKL, mask); 210 MSC_READ(MSC01_PCI_SC2PIOMSKL, mask);
207 MSC_READ(MSC01_PCI_SC2PIOMAPL, map); 211 MSC_READ(MSC01_PCI_SC2PIOMAPL, map);
@@ -209,7 +213,11 @@ void __init mips_pcibios_init(void)
209 msc_io_resource.end = (map & mask) | ~mask; 213 msc_io_resource.end = (map & mask) | ~mask;
210 msc_controller.io_offset = 0; 214 msc_controller.io_offset = 0;
211 ioport_resource.end = ~mask; 215 ioport_resource.end = ~mask;
212 216#ifdef CONFIG_MIPS_CMP
217 if (gcmp_niocu())
218 gcmp_setregion(1, start, mask,
219 GCMP_GCB_GCMPB_CMDEFTGT_IOCU1);
220#endif
213 /* If ranges overlap I/O takes precedence. */ 221 /* If ranges overlap I/O takes precedence. */
214 start = start & mask; 222 start = start & mask;
215 end = start | ~mask; 223 end = start | ~mask;
@@ -241,3 +249,16 @@ void __init mips_pcibios_init(void)
241 249
242 register_pci_controller(controller); 250 register_pci_controller(controller);
243} 251}
252
253/* Enable PCI 2.1 compatibility in PIIX4 */
254static void __init quirk_dlcsetup(struct pci_dev *dev)
255{
256 u8 odlc, ndlc;
257 (void) pci_read_config_byte(dev, 0x82, &odlc);
258 /* Enable passive releases and delayed transaction */
259 ndlc = odlc | 7;
260 (void) pci_write_config_byte(dev, 0x82, ndlc);
261}
262
263DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_0,
264 quirk_dlcsetup);