2 * pcic.c: MicroSPARC-IIep PCI controller support
4 * Copyright (C) 1998 V. Roganov and G. Raiko
6 * Code is derived from Ultra/PCI PSYCHO controller support, see that
9 * Support for diverse IIep based platforms by Pete Zaitcev.
10 * CP-1200 by Eric Brower.
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/init.h>
17 #include <linux/slab.h>
18 #include <linux/jiffies.h>
21 #include <asm/sbus.h> /* for sanity check... */
22 #include <asm/swift.h> /* for cache flushing. */
25 #include <linux/ctype.h>
26 #include <linux/pci.h>
27 #include <linux/time.h>
28 #include <linux/timex.h>
29 #include <linux/interrupt.h>
32 #include <asm/oplib.h>
35 #include <asm/timer.h>
36 #include <asm/uaccess.h>
37 #include <asm/irq_regs.h>
41 * I studied different documents and many live PROMs both from 2.30
42 * family and 3.xx versions. I came to the amazing conclusion: there is
43 * absolutely no way to route interrupts in IIep systems relying on
44 * information which PROM presents. We must hardcode interrupt routing
45 * schematics. And this actually sucks. -- zaitcev 1999/05/12
47 * To find irq for a device we determine which routing map
48 * is in effect or, in other words, on which machine we are running.
49 * We use PROM name for this although other techniques may be used
50 * in special cases (Gleb reports a PROMless IIep based system).
51 * Once we know the map we take device configuration address and
52 * find PCIC pin number where INT line goes. Then we may either program
53 * preferred irq into the PCIC or supply the preexisting irq to the device.
56 unsigned char busno; /* PCI bus number */
57 unsigned char devfn; /* Configuration address */
58 unsigned char pin; /* PCIC external interrupt pin */
59 unsigned char irq; /* Preferred IRQ (mappable in PCIC) */
60 unsigned int force; /* Enforce preferred IRQ */
65 struct pcic_ca2irq *intmap;
70 * JavaEngine-1 apparently has different versions.
72 * According to communications with Sun folks, for P2 build 501-4628-03:
73 * pin 0 - parallel, audio;
76 * pin 3 - PS/2 kbd and mouse.
78 * OEM manual (805-1486):
82 * pin 3: Not connected
83 * OEM manual says that 501-4628 & 501-4811 are the same thing,
84 * only the latter has NAND flash in place.
86 * So far unofficial Sun wins over the OEM manual. Poor OEMs...
88 static struct pcic_ca2irq pcic_i_je1a[] = { /* 501-4811-03 */
89 { 0, 0x00, 2, 12, 0 }, /* EBus: hogs all */
90 { 0, 0x01, 1, 6, 1 }, /* Happy Meal */
91 { 0, 0x80, 0, 7, 0 }, /* IGA (unused) */
94 /* XXX JS-E entry is incomplete - PCI Slot 2 address (pin 7)? */
95 static struct pcic_ca2irq pcic_i_jse[] = {
96 { 0, 0x00, 0, 13, 0 }, /* Ebus - serial and keyboard */
97 { 0, 0x01, 1, 6, 0 }, /* hme */
98 { 0, 0x08, 2, 9, 0 }, /* VGA - we hope not used :) */
99 { 0, 0x10, 6, 8, 0 }, /* PCI INTA# in Slot 1 */
100 { 0, 0x18, 7, 12, 0 }, /* PCI INTA# in Slot 2, shared w. RTC */
101 { 0, 0x38, 4, 9, 0 }, /* All ISA devices. Read 8259. */
102 { 0, 0x80, 5, 11, 0 }, /* EIDE */
103 /* {0,0x88, 0,0,0} - unknown device... PMU? Probably no interrupt. */
104 { 0, 0xA0, 4, 9, 0 }, /* USB */
106 * Some pins belong to non-PCI devices, we hardcode them in drivers.
107 * sun4m timers - irq 10, 14
108 * PC style RTC - pin 7, irq 4 ?
109 * Smart card, Parallel - pin 4 shared with USB, ISA
110 * audio - pin 3, irq 5 ?
114 /* SPARCengine-6 was the original release name of CP1200.
115 * The documentation differs between the two versions
117 static struct pcic_ca2irq pcic_i_se6[] = {
118 { 0, 0x08, 0, 2, 0 }, /* SCSI */
119 { 0, 0x01, 1, 6, 0 }, /* HME */
120 { 0, 0x00, 3, 13, 0 }, /* EBus */
124 * Krups (courtesy of Varol Kaptan)
125 * No documentation available, but it was easy to guess
126 * because it was very similar to Espresso.
128 * pin 0 - kbd, mouse, serial;
130 * pin 2 - igs (we do not use it);
132 * pin 4,5,6 - unused;
133 * pin 7 - RTC (from P2 onwards as David B. says).
135 static struct pcic_ca2irq pcic_i_jk[] = {
136 { 0, 0x00, 0, 13, 0 }, /* Ebus - serial and keyboard */
137 { 0, 0x01, 1, 6, 0 }, /* hme */
141 * Several entries in this list may point to the same routing map
142 * as several PROMs may be installed on the same physical board.
144 #define SN2L_INIT(name, map) \
145 { name, map, ARRAY_SIZE(map) }
147 static struct pcic_sn2list pcic_known_sysnames[] = {
148 SN2L_INIT("SUNW,JavaEngine1", pcic_i_je1a), /* JE1, PROM 2.32 */
149 SN2L_INIT("SUNW,JS-E", pcic_i_jse), /* PROLL JavaStation-E */
150 SN2L_INIT("SUNW,SPARCengine-6", pcic_i_se6), /* SPARCengine-6/CP-1200 */
151 SN2L_INIT("SUNW,JS-NC", pcic_i_jk), /* PROLL JavaStation-NC */
152 SN2L_INIT("SUNW,JSIIep", pcic_i_jk), /* OBP JavaStation-NC */
157 * Only one PCIC per IIep,
158 * and since we have no SMP IIep, only one per system.
161 static struct linux_pcic pcic0;
163 void __iomem *pcic_regs;
164 volatile int pcic_speculative;
165 volatile int pcic_trapped;
167 static void pci_do_gettimeofday(struct timeval *tv);
168 static int pci_do_settimeofday(struct timespec *tv);
170 #define CONFIG_CMD(bus, device_fn, where) (0x80000000 | (((unsigned int)bus) << 16) | (((unsigned int)device_fn) << 8) | (where & ~3))
172 static int pcic_read_config_dword(unsigned int busno, unsigned int devfn,
173 int where, u32 *value)
175 struct linux_pcic *pcic;
180 local_irq_save(flags);
181 #if 0 /* does not fail here */
182 pcic_speculative = 1;
185 writel(CONFIG_CMD(busno, devfn, where), pcic->pcic_config_space_addr);
186 #if 0 /* does not fail here */
189 local_irq_restore(flags);
194 pcic_speculative = 2;
196 *value = readl(pcic->pcic_config_space_data + (where&4));
199 pcic_speculative = 0;
200 local_irq_restore(flags);
204 pcic_speculative = 0;
205 local_irq_restore(flags);
209 static int pcic_read_config(struct pci_bus *bus, unsigned int devfn,
210 int where, int size, u32 *val)
214 if (bus->number != 0) return -EINVAL;
217 pcic_read_config_dword(bus->number, devfn, where&~3, &v);
218 *val = 0xff & (v >> (8*(where & 3)));
221 if (where&1) return -EINVAL;
222 pcic_read_config_dword(bus->number, devfn, where&~3, &v);
223 *val = 0xffff & (v >> (8*(where & 3)));
226 if (where&3) return -EINVAL;
227 pcic_read_config_dword(bus->number, devfn, where&~3, val);
233 static int pcic_write_config_dword(unsigned int busno, unsigned int devfn,
234 int where, u32 value)
236 struct linux_pcic *pcic;
241 local_irq_save(flags);
242 writel(CONFIG_CMD(busno, devfn, where), pcic->pcic_config_space_addr);
243 writel(value, pcic->pcic_config_space_data + (where&4));
244 local_irq_restore(flags);
248 static int pcic_write_config(struct pci_bus *bus, unsigned int devfn,
249 int where, int size, u32 val)
253 if (bus->number != 0) return -EINVAL;
256 pcic_read_config_dword(bus->number, devfn, where&~3, &v);
257 v = (v & ~(0xff << (8*(where&3)))) |
258 ((0xff&val) << (8*(where&3)));
259 return pcic_write_config_dword(bus->number, devfn, where&~3, v);
261 if (where&1) return -EINVAL;
262 pcic_read_config_dword(bus->number, devfn, where&~3, &v);
263 v = (v & ~(0xffff << (8*(where&3)))) |
264 ((0xffff&val) << (8*(where&3)));
265 return pcic_write_config_dword(bus->number, devfn, where&~3, v);
267 if (where&3) return -EINVAL;
268 return pcic_write_config_dword(bus->number, devfn, where, val);
273 static struct pci_ops pcic_ops = {
274 .read = pcic_read_config,
275 .write = pcic_write_config,
279 * On sparc64 pcibios_init() calls pci_controller_probe().
280 * We want PCIC probed little ahead so that interrupt controller
281 * would be operational.
283 int __init pcic_probe(void)
285 struct linux_pcic *pcic;
286 struct linux_prom_registers regs[PROMREG_MAX];
287 struct linux_pbm_info* pbm;
293 prom_printf("PCIC: called twice!\n");
298 node = prom_getchild (prom_root_node);
299 node = prom_searchsiblings (node, "pci");
303 * Map in PCIC register set, config space, and IO base
305 err = prom_getproperty(node, "reg", (char*)regs, sizeof(regs));
306 if (err == 0 || err == -1) {
307 prom_printf("PCIC: Error, cannot get PCIC registers "
314 pcic->pcic_res_regs.name = "pcic_registers";
315 pcic->pcic_regs = ioremap(regs[0].phys_addr, regs[0].reg_size);
316 if (!pcic->pcic_regs) {
317 prom_printf("PCIC: Error, cannot map PCIC registers.\n");
321 pcic->pcic_res_io.name = "pcic_io";
322 if ((pcic->pcic_io = (unsigned long)
323 ioremap(regs[1].phys_addr, 0x10000)) == 0) {
324 prom_printf("PCIC: Error, cannot map PCIC IO Base.\n");
328 pcic->pcic_res_cfg_addr.name = "pcic_cfg_addr";
329 if ((pcic->pcic_config_space_addr =
330 ioremap(regs[2].phys_addr, regs[2].reg_size * 2)) == 0) {
331 prom_printf("PCIC: Error, cannot map"
332 "PCI Configuration Space Address.\n");
337 * Docs say three least significant bits in address and data
338 * must be the same. Thus, we need adjust size of data.
340 pcic->pcic_res_cfg_data.name = "pcic_cfg_data";
341 if ((pcic->pcic_config_space_data =
342 ioremap(regs[3].phys_addr, regs[3].reg_size * 2)) == 0) {
343 prom_printf("PCIC: Error, cannot map"
344 "PCI Configuration Space Data.\n");
349 pbm->prom_node = node;
350 prom_getstring(node, "name", namebuf, 63); namebuf[63] = 0;
351 strcpy(pbm->prom_name, namebuf);
354 extern volatile int t_nmi[1];
355 extern int pcic_nmi_trap_patch[1];
357 t_nmi[0] = pcic_nmi_trap_patch[0];
358 t_nmi[1] = pcic_nmi_trap_patch[1];
359 t_nmi[2] = pcic_nmi_trap_patch[2];
360 t_nmi[3] = pcic_nmi_trap_patch[3];
361 swift_flush_dcache();
362 pcic_regs = pcic->pcic_regs;
365 prom_getstring(prom_root_node, "name", namebuf, 63); namebuf[63] = 0;
367 struct pcic_sn2list *p;
369 for (p = pcic_known_sysnames; p->sysname != NULL; p++) {
370 if (strcmp(namebuf, p->sysname) == 0)
373 pcic->pcic_imap = p->intmap;
374 pcic->pcic_imdim = p->mapdim;
376 if (pcic->pcic_imap == NULL) {
378 * We do not panic here for the sake of embedded systems.
380 printk("PCIC: System %s is unknown, cannot route interrupts\n",
387 static void __init pcic_pbm_scan_bus(struct linux_pcic *pcic)
389 struct linux_pbm_info *pbm = &pcic->pbm;
391 pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno, &pcic_ops, pbm);
392 #if 0 /* deadwood transplanted from sparc64 */
393 pci_fill_in_pbm_cookies(pbm->pci_bus, pbm, pbm->prom_node);
394 pci_record_assignments(pbm, pbm->pci_bus);
395 pci_assign_unassigned(pbm, pbm->pci_bus);
396 pci_fixup_irq(pbm, pbm->pci_bus);
401 * Main entry point from the PCI subsystem.
403 static int __init pcic_init(void)
405 struct linux_pcic *pcic;
408 * PCIC should be initialized at start of the timer.
409 * So, here we report the presence of PCIC and do some magic passes.
416 * Switch off IOTLB translation.
418 writeb(PCI_DVMA_CONTROL_IOTLB_DISABLE,
419 pcic->pcic_regs+PCI_DVMA_CONTROL);
422 * Increase mapped size for PCI memory space (DMA access).
423 * Should be done in that order (size first, address second).
424 * Why we couldn't set up 4GB and forget about it? XXX
426 writel(0xF0000000UL, pcic->pcic_regs+PCI_SIZE_0);
427 writel(0+PCI_BASE_ADDRESS_SPACE_MEMORY,
428 pcic->pcic_regs+PCI_BASE_ADDRESS_0);
430 pcic_pbm_scan_bus(pcic);
436 int pcic_present(void)
441 static int __init pdev_to_pnode(struct linux_pbm_info *pbm,
442 struct pci_dev *pdev)
444 struct linux_prom_pci_registers regs[PROMREG_MAX];
446 int node = prom_getchild(pbm->prom_node);
449 err = prom_getproperty(node, "reg",
450 (char *)®s[0], sizeof(regs));
451 if(err != 0 && err != -1) {
452 unsigned long devfn = (regs[0].which_io >> 8) & 0xff;
453 if(devfn == pdev->devfn)
456 node = prom_getsibling(node);
461 static inline struct pcidev_cookie *pci_devcookie_alloc(void)
463 return kmalloc(sizeof(struct pcidev_cookie), GFP_ATOMIC);
466 static void pcic_map_pci_device(struct linux_pcic *pcic,
467 struct pci_dev *dev, int node)
470 unsigned long address;
474 if (node == 0 || node == -1) {
475 strcpy(namebuf, "???");
477 prom_getstring(node, "name", namebuf, 63); namebuf[63] = 0;
480 for (j = 0; j < 6; j++) {
481 address = dev->resource[j].start;
482 if (address == 0) break; /* are sequential */
483 flags = dev->resource[j].flags;
484 if ((flags & IORESOURCE_IO) != 0) {
485 if (address < 0x10000) {
487 * A device responds to I/O cycles on PCI.
488 * We generate these cycles with memory
489 * access into the fixed map (phys 0x30000000).
491 * Since a device driver does not want to
492 * do ioremap() before accessing PC-style I/O,
493 * we supply virtual, ready to access address.
495 * Ebus devices do not come here even if
496 * CheerIO makes a similar conversion.
497 * See ebus.c for details.
499 * Note that request_region()
500 * works for these devices.
502 * XXX Neat trick, but it's a *bad* idea
503 * to shit into regions like that.
504 * What if we want to allocate one more
505 * PCI base address...
507 dev->resource[j].start =
508 pcic->pcic_io + address;
509 dev->resource[j].end = 1; /* XXX */
510 dev->resource[j].flags =
511 (flags & ~IORESOURCE_IO) | IORESOURCE_MEM;
514 * OOPS... PCI Spec allows this. Sun does
515 * not have any devices getting above 64K
516 * so it must be user with a weird I/O
517 * board in a PCI slot. We must remap it
518 * under 64K but it is not done yet. XXX
520 printk("PCIC: Skipping I/O space at 0x%lx,"
521 "this will Oops if a driver attaches;"
522 "device '%s' at %02x:%02x)\n", address,
523 namebuf, dev->bus->number, dev->devfn);
530 pcic_fill_irq(struct linux_pcic *pcic, struct pci_dev *dev, int node)
532 struct pcic_ca2irq *p;
536 if (node == 0 || node == -1) {
537 strcpy(namebuf, "???");
539 prom_getstring(node, "name", namebuf, sizeof(namebuf));
542 if ((p = pcic->pcic_imap) == 0) {
546 for (i = 0; i < pcic->pcic_imdim; i++) {
547 if (p->busno == dev->bus->number && p->devfn == dev->devfn)
551 if (i >= pcic->pcic_imdim) {
552 printk("PCIC: device %s devfn %02x:%02x not found in %d\n",
553 namebuf, dev->bus->number, dev->devfn, pcic->pcic_imdim);
559 if (i >= 0 && i < 4) {
560 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO);
561 dev->irq = ivec >> (i << 2) & 0xF;
562 } else if (i >= 4 && i < 8) {
563 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI);
564 dev->irq = ivec >> ((i-4) << 2) & 0xF;
565 } else { /* Corrupted map */
566 printk("PCIC: BAD PIN %d\n", i); for (;;) {}
568 /* P3 */ /* printk("PCIC: device %s pin %d ivec 0x%x irq %x\n", namebuf, i, ivec, dev->irq); */
571 * dev->irq=0 means PROM did not bother to program the upper
572 * half of PCIC. This happens on JS-E with PROM 3.11, for instance.
574 if (dev->irq == 0 || p->force) {
575 if (p->irq == 0 || p->irq >= 15) { /* Corrupted map */
576 printk("PCIC: BAD IRQ %d\n", p->irq); for (;;) {}
578 printk("PCIC: setting irq %d at pin %d for device %02x:%02x\n",
579 p->irq, p->pin, dev->bus->number, dev->devfn);
584 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI);
585 ivec &= ~(0xF << ((i - 4) << 2));
586 ivec |= p->irq << ((i - 4) << 2);
587 writew(ivec, pcic->pcic_regs+PCI_INT_SELECT_HI);
589 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO);
590 ivec &= ~(0xF << (i << 2));
591 ivec |= p->irq << (i << 2);
592 writew(ivec, pcic->pcic_regs+PCI_INT_SELECT_LO);
600 * Normally called from {do_}pci_scan_bus...
602 void __devinit pcibios_fixup_bus(struct pci_bus *bus)
605 int i, has_io, has_mem;
607 struct linux_pcic *pcic;
608 /* struct linux_pbm_info* pbm = &pcic->pbm; */
610 struct pcidev_cookie *pcp;
613 printk("pcibios_fixup_bus: no PCIC\n");
619 * Next crud is an equivalent of pbm = pcic_bus_to_pbm(bus);
621 if (bus->number != 0) {
622 printk("pcibios_fixup_bus: nonzero bus 0x%x\n", bus->number);
626 list_for_each_entry(dev, &bus->devices, bus_list) {
629 * Comment from i386 branch:
630 * There are buggy BIOSes that forget to enable I/O and memory
631 * access to PCI devices. We try to fix this, but we need to
632 * be sure that the BIOS didn't forget to assign an address
633 * to the device. [mj]
634 * OBP is a case of such BIOS :-)
636 has_io = has_mem = 0;
638 unsigned long f = dev->resource[i].flags;
639 if (f & IORESOURCE_IO) {
641 } else if (f & IORESOURCE_MEM)
644 pcic_read_config(dev->bus, dev->devfn, PCI_COMMAND, 2, &cmd);
645 if (has_io && !(cmd & PCI_COMMAND_IO)) {
646 printk("PCIC: Enabling I/O for device %02x:%02x\n",
647 dev->bus->number, dev->devfn);
648 cmd |= PCI_COMMAND_IO;
649 pcic_write_config(dev->bus, dev->devfn,
650 PCI_COMMAND, 2, cmd);
652 if (has_mem && !(cmd & PCI_COMMAND_MEMORY)) {
653 printk("PCIC: Enabling memory for device %02x:%02x\n",
654 dev->bus->number, dev->devfn);
655 cmd |= PCI_COMMAND_MEMORY;
656 pcic_write_config(dev->bus, dev->devfn,
657 PCI_COMMAND, 2, cmd);
660 node = pdev_to_pnode(&pcic->pbm, dev);
665 pcp = pci_devcookie_alloc();
666 pcp->pbm = &pcic->pbm;
667 pcp->prom_node = of_find_node_by_phandle(node);
670 /* fixing I/O to look like memory */
671 if ((dev->class>>16) != PCI_BASE_CLASS_BRIDGE)
672 pcic_map_pci_device(pcic, dev, node);
674 pcic_fill_irq(pcic, dev, node);
679 * pcic_pin_to_irq() is exported to ebus.c.
682 pcic_pin_to_irq(unsigned int pin, const char *name)
684 struct linux_pcic *pcic = &pcic0;
689 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO);
690 irq = ivec >> (pin << 2) & 0xF;
691 } else if (pin < 8) {
692 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI);
693 irq = ivec >> ((pin-4) << 2) & 0xF;
694 } else { /* Corrupted map */
695 printk("PCIC: BAD PIN %d FOR %s\n", pin, name);
696 for (;;) {} /* XXX Cannot panic properly in case of PROLL */
698 /* P3 */ /* printk("PCIC: dev %s pin %d ivec 0x%x irq %x\n", name, pin, ivec, irq); */
702 /* Makes compiler happy */
703 static volatile int pcic_timer_dummy;
705 static void pcic_clear_clock_irq(void)
707 pcic_timer_dummy = readl(pcic0.pcic_regs+PCI_SYS_LIMIT);
710 static irqreturn_t pcic_timer_handler (int irq, void *h)
712 write_seqlock(&xtime_lock); /* Dummy, to show that we remember */
713 pcic_clear_clock_irq();
716 update_process_times(user_mode(get_irq_regs()));
718 write_sequnlock(&xtime_lock);
722 #define USECS_PER_JIFFY 10000 /* We have 100HZ "standard" timer for sparc */
723 #define TICK_TIMER_LIMIT ((100*1000000/4)/100)
725 void __init pci_time_init(void)
727 struct linux_pcic *pcic = &pcic0;
731 /* A hack until do_gettimeofday prototype is moved to arch specific headers
732 and btfixupped. Patch do_gettimeofday with ba pci_do_gettimeofday; nop */
733 ((unsigned int *)do_gettimeofday)[0] =
734 0x10800000 | ((((unsigned long)pci_do_gettimeofday -
735 (unsigned long)do_gettimeofday) >> 2) & 0x003fffff);
736 ((unsigned int *)do_gettimeofday)[1] = 0x01000000;
737 BTFIXUPSET_CALL(bus_do_settimeofday, pci_do_settimeofday, BTFIXUPCALL_NORM);
740 writel (TICK_TIMER_LIMIT, pcic->pcic_regs+PCI_SYS_LIMIT);
741 /* PROM should set appropriate irq */
742 v = readb(pcic->pcic_regs+PCI_COUNTER_IRQ);
743 timer_irq = PCI_COUNTER_IRQ_SYS(v);
744 writel (PCI_COUNTER_IRQ_SET(timer_irq, 0),
745 pcic->pcic_regs+PCI_COUNTER_IRQ);
746 irq = request_irq(timer_irq, pcic_timer_handler,
747 (IRQF_DISABLED | SA_STATIC_ALLOC), "timer", NULL);
749 prom_printf("time_init: unable to attach IRQ%d\n", timer_irq);
755 static __inline__ unsigned long do_gettimeoffset(void)
758 * We devide all to 100
759 * to have microsecond resolution and to avoid overflow
761 unsigned long count =
762 readl(pcic0.pcic_regs+PCI_SYS_COUNTER) & ~PCI_SYS_COUNTER_OVERFLOW;
763 count = ((count/100)*USECS_PER_JIFFY) / (TICK_TIMER_LIMIT/100);
767 static void pci_do_gettimeofday(struct timeval *tv)
771 unsigned long usec, sec;
772 unsigned long max_ntp_tick = tick_usec - tickadj;
775 seq = read_seqbegin_irqsave(&xtime_lock, flags);
776 usec = do_gettimeoffset();
779 * If time_adjust is negative then NTP is slowing the clock
780 * so make sure not to go into next possible interval.
781 * Better to lose some accuracy than have time go backwards..
783 if (unlikely(time_adjust < 0))
784 usec = min(usec, max_ntp_tick);
787 usec += (xtime.tv_nsec / 1000);
788 } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
790 while (usec >= 1000000) {
799 static int pci_do_settimeofday(struct timespec *tv)
801 if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
805 * This is revolting. We need to set "xtime" correctly. However, the
806 * value in this location is the value at the most recent update of
807 * wall time. Discover what correction gettimeofday() would have
808 * made, and then undo it!
810 tv->tv_nsec -= 1000 * do_gettimeoffset();
811 while (tv->tv_nsec < 0) {
812 tv->tv_nsec += NSEC_PER_SEC;
816 wall_to_monotonic.tv_sec += xtime.tv_sec - tv->tv_sec;
817 wall_to_monotonic.tv_nsec += xtime.tv_nsec - tv->tv_nsec;
819 if (wall_to_monotonic.tv_nsec > NSEC_PER_SEC) {
820 wall_to_monotonic.tv_nsec -= NSEC_PER_SEC;
821 wall_to_monotonic.tv_sec++;
823 if (wall_to_monotonic.tv_nsec < 0) {
824 wall_to_monotonic.tv_nsec += NSEC_PER_SEC;
825 wall_to_monotonic.tv_sec--;
828 xtime.tv_sec = tv->tv_sec;
829 xtime.tv_nsec = tv->tv_nsec;
835 static void watchdog_reset() {
836 writeb(0, pcic->pcic_regs+PCI_SYS_STATUS);
841 * Other archs parse arguments here.
843 char * __devinit pcibios_setup(char *str)
848 void pcibios_align_resource(void *data, struct resource *res,
849 resource_size_t size, resource_size_t align)
853 int pcibios_enable_device(struct pci_dev *pdev, int mask)
861 void pcic_nmi(unsigned int pend, struct pt_regs *regs)
864 pend = flip_dword(pend);
866 if (!pcic_speculative || (pend & PCI_SYS_INT_PENDING_PIO) == 0) {
868 * XXX On CP-1200 PCI #SERR may happen, we do not know
869 * what to do about it yet.
871 printk("Aiee, NMI pend 0x%x pc 0x%x spec %d, hanging\n",
872 pend, (int)regs->pc, pcic_speculative);
875 pcic_speculative = 0;
877 regs->pc = regs->npc;
881 static inline unsigned long get_irqmask(int irq_nr)
886 static void pcic_disable_irq(unsigned int irq_nr)
888 unsigned long mask, flags;
890 mask = get_irqmask(irq_nr);
891 local_irq_save(flags);
892 writel(mask, pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_SET);
893 local_irq_restore(flags);
896 static void pcic_enable_irq(unsigned int irq_nr)
898 unsigned long mask, flags;
900 mask = get_irqmask(irq_nr);
901 local_irq_save(flags);
902 writel(mask, pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_CLEAR);
903 local_irq_restore(flags);
906 static void pcic_clear_profile_irq(int cpu)
908 printk("PCIC: unimplemented code: FILE=%s LINE=%d", __FILE__, __LINE__);
911 static void pcic_load_profile_irq(int cpu, unsigned int limit)
913 printk("PCIC: unimplemented code: FILE=%s LINE=%d", __FILE__, __LINE__);
916 /* We assume the caller has disabled local interrupts when these are called,
917 * or else very bizarre behavior will result.
919 static void pcic_disable_pil_irq(unsigned int pil)
921 writel(get_irqmask(pil), pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_SET);
924 static void pcic_enable_pil_irq(unsigned int pil)
926 writel(get_irqmask(pil), pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_CLEAR);
929 void __init sun4m_pci_init_IRQ(void)
931 BTFIXUPSET_CALL(enable_irq, pcic_enable_irq, BTFIXUPCALL_NORM);
932 BTFIXUPSET_CALL(disable_irq, pcic_disable_irq, BTFIXUPCALL_NORM);
933 BTFIXUPSET_CALL(enable_pil_irq, pcic_enable_pil_irq, BTFIXUPCALL_NORM);
934 BTFIXUPSET_CALL(disable_pil_irq, pcic_disable_pil_irq, BTFIXUPCALL_NORM);
935 BTFIXUPSET_CALL(clear_clock_irq, pcic_clear_clock_irq, BTFIXUPCALL_NORM);
936 BTFIXUPSET_CALL(clear_profile_irq, pcic_clear_profile_irq, BTFIXUPCALL_NORM);
937 BTFIXUPSET_CALL(load_profile_irq, pcic_load_profile_irq, BTFIXUPCALL_NORM);
940 int pcibios_assign_resource(struct pci_dev *pdev, int resource)
945 struct device_node *pci_device_to_OF_node(struct pci_dev *pdev)
947 struct pcidev_cookie *pc = pdev->sysdata;
949 return pc->prom_node;
951 EXPORT_SYMBOL(pci_device_to_OF_node);
954 * This probably belongs here rather than ioport.c because
955 * we do not want this crud linked into SBus kernels.
956 * Also, think for a moment about likes of floppy.c that
957 * include architecture specific parts. They may want to redefine ins/outs.
959 * We do not use horroble macroses here because we want to
960 * advance pointer by sizeof(size).
962 void outsb(unsigned long addr, const void *src, unsigned long count)
966 outb(*(const char *)src, addr);
972 void outsw(unsigned long addr, const void *src, unsigned long count)
976 outw(*(const short *)src, addr);
982 void outsl(unsigned long addr, const void *src, unsigned long count)
986 outl(*(const long *)src, addr);
992 void insb(unsigned long addr, void *dst, unsigned long count)
996 *(unsigned char *)dst = inb(addr);
1002 void insw(unsigned long addr, void *dst, unsigned long count)
1006 *(unsigned short *)dst = inw(addr);
1012 void insl(unsigned long addr, void *dst, unsigned long count)
1017 * XXX I am sure we are in for an unaligned trap here.
1019 *(unsigned long *)dst = inl(addr);
1025 subsys_initcall(pcic_init);