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>
20 #include <asm/swift.h> /* for cache flushing. */
23 #include <linux/ctype.h>
24 #include <linux/pci.h>
25 #include <linux/time.h>
26 #include <linux/timex.h>
27 #include <linux/interrupt.h>
28 #include <linux/export.h>
31 #include <asm/oplib.h>
34 #include <asm/timex.h>
35 #include <asm/timer.h>
36 #include <asm/uaccess.h>
37 #include <asm/irq_regs.h>
42 * I studied different documents and many live PROMs both from 2.30
43 * family and 3.xx versions. I came to the amazing conclusion: there is
44 * absolutely no way to route interrupts in IIep systems relying on
45 * information which PROM presents. We must hardcode interrupt routing
46 * schematics. And this actually sucks. -- zaitcev 1999/05/12
48 * To find irq for a device we determine which routing map
49 * is in effect or, in other words, on which machine we are running.
50 * We use PROM name for this although other techniques may be used
51 * in special cases (Gleb reports a PROMless IIep based system).
52 * Once we know the map we take device configuration address and
53 * find PCIC pin number where INT line goes. Then we may either program
54 * preferred irq into the PCIC or supply the preexisting irq to the device.
57 unsigned char busno; /* PCI bus number */
58 unsigned char devfn; /* Configuration address */
59 unsigned char pin; /* PCIC external interrupt pin */
60 unsigned char irq; /* Preferred IRQ (mappable in PCIC) */
61 unsigned int force; /* Enforce preferred IRQ */
66 struct pcic_ca2irq *intmap;
71 * JavaEngine-1 apparently has different versions.
73 * According to communications with Sun folks, for P2 build 501-4628-03:
74 * pin 0 - parallel, audio;
77 * pin 3 - PS/2 kbd and mouse.
79 * OEM manual (805-1486):
83 * pin 3: Not connected
84 * OEM manual says that 501-4628 & 501-4811 are the same thing,
85 * only the latter has NAND flash in place.
87 * So far unofficial Sun wins over the OEM manual. Poor OEMs...
89 static struct pcic_ca2irq pcic_i_je1a[] = { /* 501-4811-03 */
90 { 0, 0x00, 2, 12, 0 }, /* EBus: hogs all */
91 { 0, 0x01, 1, 6, 1 }, /* Happy Meal */
92 { 0, 0x80, 0, 7, 0 }, /* IGA (unused) */
95 /* XXX JS-E entry is incomplete - PCI Slot 2 address (pin 7)? */
96 static struct pcic_ca2irq pcic_i_jse[] = {
97 { 0, 0x00, 0, 13, 0 }, /* Ebus - serial and keyboard */
98 { 0, 0x01, 1, 6, 0 }, /* hme */
99 { 0, 0x08, 2, 9, 0 }, /* VGA - we hope not used :) */
100 { 0, 0x10, 6, 8, 0 }, /* PCI INTA# in Slot 1 */
101 { 0, 0x18, 7, 12, 0 }, /* PCI INTA# in Slot 2, shared w. RTC */
102 { 0, 0x38, 4, 9, 0 }, /* All ISA devices. Read 8259. */
103 { 0, 0x80, 5, 11, 0 }, /* EIDE */
104 /* {0,0x88, 0,0,0} - unknown device... PMU? Probably no interrupt. */
105 { 0, 0xA0, 4, 9, 0 }, /* USB */
107 * Some pins belong to non-PCI devices, we hardcode them in drivers.
108 * sun4m timers - irq 10, 14
109 * PC style RTC - pin 7, irq 4 ?
110 * Smart card, Parallel - pin 4 shared with USB, ISA
111 * audio - pin 3, irq 5 ?
115 /* SPARCengine-6 was the original release name of CP1200.
116 * The documentation differs between the two versions
118 static struct pcic_ca2irq pcic_i_se6[] = {
119 { 0, 0x08, 0, 2, 0 }, /* SCSI */
120 { 0, 0x01, 1, 6, 0 }, /* HME */
121 { 0, 0x00, 3, 13, 0 }, /* EBus */
125 * Krups (courtesy of Varol Kaptan)
126 * No documentation available, but it was easy to guess
127 * because it was very similar to Espresso.
129 * pin 0 - kbd, mouse, serial;
131 * pin 2 - igs (we do not use it);
133 * pin 4,5,6 - unused;
134 * pin 7 - RTC (from P2 onwards as David B. says).
136 static struct pcic_ca2irq pcic_i_jk[] = {
137 { 0, 0x00, 0, 13, 0 }, /* Ebus - serial and keyboard */
138 { 0, 0x01, 1, 6, 0 }, /* hme */
142 * Several entries in this list may point to the same routing map
143 * as several PROMs may be installed on the same physical board.
145 #define SN2L_INIT(name, map) \
146 { name, map, ARRAY_SIZE(map) }
148 static struct pcic_sn2list pcic_known_sysnames[] = {
149 SN2L_INIT("SUNW,JavaEngine1", pcic_i_je1a), /* JE1, PROM 2.32 */
150 SN2L_INIT("SUNW,JS-E", pcic_i_jse), /* PROLL JavaStation-E */
151 SN2L_INIT("SUNW,SPARCengine-6", pcic_i_se6), /* SPARCengine-6/CP-1200 */
152 SN2L_INIT("SUNW,JS-NC", pcic_i_jk), /* PROLL JavaStation-NC */
153 SN2L_INIT("SUNW,JSIIep", pcic_i_jk), /* OBP JavaStation-NC */
158 * Only one PCIC per IIep,
159 * and since we have no SMP IIep, only one per system.
162 static struct linux_pcic pcic0;
164 void __iomem *pcic_regs;
165 volatile int pcic_speculative;
166 volatile int pcic_trapped;
169 unsigned int pcic_build_device_irq(struct platform_device *op,
170 unsigned int real_irq);
172 #define CONFIG_CMD(bus, device_fn, where) (0x80000000 | (((unsigned int)bus) << 16) | (((unsigned int)device_fn) << 8) | (where & ~3))
174 static int pcic_read_config_dword(unsigned int busno, unsigned int devfn,
175 int where, u32 *value)
177 struct linux_pcic *pcic;
182 local_irq_save(flags);
183 #if 0 /* does not fail here */
184 pcic_speculative = 1;
187 writel(CONFIG_CMD(busno, devfn, where), pcic->pcic_config_space_addr);
188 #if 0 /* does not fail here */
191 local_irq_restore(flags);
196 pcic_speculative = 2;
198 *value = readl(pcic->pcic_config_space_data + (where&4));
201 pcic_speculative = 0;
202 local_irq_restore(flags);
206 pcic_speculative = 0;
207 local_irq_restore(flags);
211 static int pcic_read_config(struct pci_bus *bus, unsigned int devfn,
212 int where, int size, u32 *val)
216 if (bus->number != 0) return -EINVAL;
219 pcic_read_config_dword(bus->number, devfn, where&~3, &v);
220 *val = 0xff & (v >> (8*(where & 3)));
223 if (where&1) return -EINVAL;
224 pcic_read_config_dword(bus->number, devfn, where&~3, &v);
225 *val = 0xffff & (v >> (8*(where & 3)));
228 if (where&3) return -EINVAL;
229 pcic_read_config_dword(bus->number, devfn, where&~3, val);
235 static int pcic_write_config_dword(unsigned int busno, unsigned int devfn,
236 int where, u32 value)
238 struct linux_pcic *pcic;
243 local_irq_save(flags);
244 writel(CONFIG_CMD(busno, devfn, where), pcic->pcic_config_space_addr);
245 writel(value, pcic->pcic_config_space_data + (where&4));
246 local_irq_restore(flags);
250 static int pcic_write_config(struct pci_bus *bus, unsigned int devfn,
251 int where, int size, u32 val)
255 if (bus->number != 0) return -EINVAL;
258 pcic_read_config_dword(bus->number, devfn, where&~3, &v);
259 v = (v & ~(0xff << (8*(where&3)))) |
260 ((0xff&val) << (8*(where&3)));
261 return pcic_write_config_dword(bus->number, devfn, where&~3, v);
263 if (where&1) return -EINVAL;
264 pcic_read_config_dword(bus->number, devfn, where&~3, &v);
265 v = (v & ~(0xffff << (8*(where&3)))) |
266 ((0xffff&val) << (8*(where&3)));
267 return pcic_write_config_dword(bus->number, devfn, where&~3, v);
269 if (where&3) return -EINVAL;
270 return pcic_write_config_dword(bus->number, devfn, where, val);
275 static struct pci_ops pcic_ops = {
276 .read = pcic_read_config,
277 .write = pcic_write_config,
281 * On sparc64 pcibios_init() calls pci_controller_probe().
282 * We want PCIC probed little ahead so that interrupt controller
283 * would be operational.
285 int __init pcic_probe(void)
287 struct linux_pcic *pcic;
288 struct linux_prom_registers regs[PROMREG_MAX];
289 struct linux_pbm_info* pbm;
295 prom_printf("PCIC: called twice!\n");
300 node = prom_getchild (prom_root_node);
301 node = prom_searchsiblings (node, "pci");
305 * Map in PCIC register set, config space, and IO base
307 err = prom_getproperty(node, "reg", (char*)regs, sizeof(regs));
308 if (err == 0 || err == -1) {
309 prom_printf("PCIC: Error, cannot get PCIC registers "
316 pcic->pcic_res_regs.name = "pcic_registers";
317 pcic->pcic_regs = ioremap(regs[0].phys_addr, regs[0].reg_size);
318 if (!pcic->pcic_regs) {
319 prom_printf("PCIC: Error, cannot map PCIC registers.\n");
323 pcic->pcic_res_io.name = "pcic_io";
324 if ((pcic->pcic_io = (unsigned long)
325 ioremap(regs[1].phys_addr, 0x10000)) == 0) {
326 prom_printf("PCIC: Error, cannot map PCIC IO Base.\n");
330 pcic->pcic_res_cfg_addr.name = "pcic_cfg_addr";
331 if ((pcic->pcic_config_space_addr =
332 ioremap(regs[2].phys_addr, regs[2].reg_size * 2)) == 0) {
333 prom_printf("PCIC: Error, cannot map "
334 "PCI Configuration Space Address.\n");
339 * Docs say three least significant bits in address and data
340 * must be the same. Thus, we need adjust size of data.
342 pcic->pcic_res_cfg_data.name = "pcic_cfg_data";
343 if ((pcic->pcic_config_space_data =
344 ioremap(regs[3].phys_addr, regs[3].reg_size * 2)) == 0) {
345 prom_printf("PCIC: Error, cannot map "
346 "PCI Configuration Space Data.\n");
351 pbm->prom_node = node;
352 prom_getstring(node, "name", namebuf, 63); namebuf[63] = 0;
353 strcpy(pbm->prom_name, namebuf);
356 extern volatile int t_nmi[4];
357 extern int pcic_nmi_trap_patch[4];
359 t_nmi[0] = pcic_nmi_trap_patch[0];
360 t_nmi[1] = pcic_nmi_trap_patch[1];
361 t_nmi[2] = pcic_nmi_trap_patch[2];
362 t_nmi[3] = pcic_nmi_trap_patch[3];
363 swift_flush_dcache();
364 pcic_regs = pcic->pcic_regs;
367 prom_getstring(prom_root_node, "name", namebuf, 63); namebuf[63] = 0;
369 struct pcic_sn2list *p;
371 for (p = pcic_known_sysnames; p->sysname != NULL; p++) {
372 if (strcmp(namebuf, p->sysname) == 0)
375 pcic->pcic_imap = p->intmap;
376 pcic->pcic_imdim = p->mapdim;
378 if (pcic->pcic_imap == NULL) {
380 * We do not panic here for the sake of embedded systems.
382 printk("PCIC: System %s is unknown, cannot route interrupts\n",
389 static void __init pcic_pbm_scan_bus(struct linux_pcic *pcic)
391 struct linux_pbm_info *pbm = &pcic->pbm;
393 pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno, &pcic_ops, pbm);
394 #if 0 /* deadwood transplanted from sparc64 */
395 pci_fill_in_pbm_cookies(pbm->pci_bus, pbm, pbm->prom_node);
396 pci_record_assignments(pbm, pbm->pci_bus);
397 pci_assign_unassigned(pbm, pbm->pci_bus);
398 pci_fixup_irq(pbm, pbm->pci_bus);
403 * Main entry point from the PCI subsystem.
405 static int __init pcic_init(void)
407 struct linux_pcic *pcic;
410 * PCIC should be initialized at start of the timer.
411 * So, here we report the presence of PCIC and do some magic passes.
418 * Switch off IOTLB translation.
420 writeb(PCI_DVMA_CONTROL_IOTLB_DISABLE,
421 pcic->pcic_regs+PCI_DVMA_CONTROL);
424 * Increase mapped size for PCI memory space (DMA access).
425 * Should be done in that order (size first, address second).
426 * Why we couldn't set up 4GB and forget about it? XXX
428 writel(0xF0000000UL, pcic->pcic_regs+PCI_SIZE_0);
429 writel(0+PCI_BASE_ADDRESS_SPACE_MEMORY,
430 pcic->pcic_regs+PCI_BASE_ADDRESS_0);
432 pcic_pbm_scan_bus(pcic);
437 int pcic_present(void)
442 static int pdev_to_pnode(struct linux_pbm_info *pbm, struct pci_dev *pdev)
444 struct linux_prom_pci_registers regs[PROMREG_MAX];
446 phandle 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 * Note that request_region()
496 * works for these devices.
498 * XXX Neat trick, but it's a *bad* idea
499 * to shit into regions like that.
500 * What if we want to allocate one more
501 * PCI base address...
503 dev->resource[j].start =
504 pcic->pcic_io + address;
505 dev->resource[j].end = 1; /* XXX */
506 dev->resource[j].flags =
507 (flags & ~IORESOURCE_IO) | IORESOURCE_MEM;
510 * OOPS... PCI Spec allows this. Sun does
511 * not have any devices getting above 64K
512 * so it must be user with a weird I/O
513 * board in a PCI slot. We must remap it
514 * under 64K but it is not done yet. XXX
516 printk("PCIC: Skipping I/O space at 0x%lx, "
517 "this will Oops if a driver attaches "
518 "device '%s' at %02x:%02x)\n", address,
519 namebuf, dev->bus->number, dev->devfn);
526 pcic_fill_irq(struct linux_pcic *pcic, struct pci_dev *dev, int node)
528 struct pcic_ca2irq *p;
529 unsigned int real_irq;
533 if (node == 0 || node == -1) {
534 strcpy(namebuf, "???");
536 prom_getstring(node, "name", namebuf, sizeof(namebuf));
539 if ((p = pcic->pcic_imap) == 0) {
543 for (i = 0; i < pcic->pcic_imdim; i++) {
544 if (p->busno == dev->bus->number && p->devfn == dev->devfn)
548 if (i >= pcic->pcic_imdim) {
549 printk("PCIC: device %s devfn %02x:%02x not found in %d\n",
550 namebuf, dev->bus->number, dev->devfn, pcic->pcic_imdim);
556 if (i >= 0 && i < 4) {
557 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO);
558 real_irq = ivec >> (i << 2) & 0xF;
559 } else if (i >= 4 && i < 8) {
560 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI);
561 real_irq = ivec >> ((i-4) << 2) & 0xF;
562 } else { /* Corrupted map */
563 printk("PCIC: BAD PIN %d\n", i); for (;;) {}
565 /* P3 */ /* printk("PCIC: device %s pin %d ivec 0x%x irq %x\n", namebuf, i, ivec, dev->irq); */
567 /* real_irq means PROM did not bother to program the upper
568 * half of PCIC. This happens on JS-E with PROM 3.11, for instance.
570 if (real_irq == 0 || p->force) {
571 if (p->irq == 0 || p->irq >= 15) { /* Corrupted map */
572 printk("PCIC: BAD IRQ %d\n", p->irq); for (;;) {}
574 printk("PCIC: setting irq %d at pin %d for device %02x:%02x\n",
575 p->irq, p->pin, dev->bus->number, dev->devfn);
580 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI);
581 ivec &= ~(0xF << ((i - 4) << 2));
582 ivec |= p->irq << ((i - 4) << 2);
583 writew(ivec, pcic->pcic_regs+PCI_INT_SELECT_HI);
585 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO);
586 ivec &= ~(0xF << (i << 2));
587 ivec |= p->irq << (i << 2);
588 writew(ivec, pcic->pcic_regs+PCI_INT_SELECT_LO);
591 dev->irq = pcic_build_device_irq(NULL, real_irq);
595 * Normally called from {do_}pci_scan_bus...
597 void pcibios_fixup_bus(struct pci_bus *bus)
600 int i, has_io, has_mem;
602 struct linux_pcic *pcic;
603 /* struct linux_pbm_info* pbm = &pcic->pbm; */
605 struct pcidev_cookie *pcp;
608 printk("pcibios_fixup_bus: no PCIC\n");
614 * Next crud is an equivalent of pbm = pcic_bus_to_pbm(bus);
616 if (bus->number != 0) {
617 printk("pcibios_fixup_bus: nonzero bus 0x%x\n", bus->number);
621 list_for_each_entry(dev, &bus->devices, bus_list) {
624 * Comment from i386 branch:
625 * There are buggy BIOSes that forget to enable I/O and memory
626 * access to PCI devices. We try to fix this, but we need to
627 * be sure that the BIOS didn't forget to assign an address
628 * to the device. [mj]
629 * OBP is a case of such BIOS :-)
631 has_io = has_mem = 0;
633 unsigned long f = dev->resource[i].flags;
634 if (f & IORESOURCE_IO) {
636 } else if (f & IORESOURCE_MEM)
639 pcic_read_config(dev->bus, dev->devfn, PCI_COMMAND, 2, &cmd);
640 if (has_io && !(cmd & PCI_COMMAND_IO)) {
641 printk("PCIC: Enabling I/O for device %02x:%02x\n",
642 dev->bus->number, dev->devfn);
643 cmd |= PCI_COMMAND_IO;
644 pcic_write_config(dev->bus, dev->devfn,
645 PCI_COMMAND, 2, cmd);
647 if (has_mem && !(cmd & PCI_COMMAND_MEMORY)) {
648 printk("PCIC: Enabling memory for device %02x:%02x\n",
649 dev->bus->number, dev->devfn);
650 cmd |= PCI_COMMAND_MEMORY;
651 pcic_write_config(dev->bus, dev->devfn,
652 PCI_COMMAND, 2, cmd);
655 node = pdev_to_pnode(&pcic->pbm, dev);
660 pcp = pci_devcookie_alloc();
661 pcp->pbm = &pcic->pbm;
662 pcp->prom_node = of_find_node_by_phandle(node);
665 /* fixing I/O to look like memory */
666 if ((dev->class>>16) != PCI_BASE_CLASS_BRIDGE)
667 pcic_map_pci_device(pcic, dev, node);
669 pcic_fill_irq(pcic, dev, node);
674 * pcic_pin_to_irq() is exported to bus probing code
677 pcic_pin_to_irq(unsigned int pin, const char *name)
679 struct linux_pcic *pcic = &pcic0;
684 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_LO);
685 irq = ivec >> (pin << 2) & 0xF;
686 } else if (pin < 8) {
687 ivec = readw(pcic->pcic_regs+PCI_INT_SELECT_HI);
688 irq = ivec >> ((pin-4) << 2) & 0xF;
689 } else { /* Corrupted map */
690 printk("PCIC: BAD PIN %d FOR %s\n", pin, name);
691 for (;;) {} /* XXX Cannot panic properly in case of PROLL */
693 /* P3 */ /* printk("PCIC: dev %s pin %d ivec 0x%x irq %x\n", name, pin, ivec, irq); */
697 /* Makes compiler happy */
698 static volatile int pcic_timer_dummy;
700 static void pcic_clear_clock_irq(void)
702 pcic_timer_dummy = readl(pcic0.pcic_regs+PCI_SYS_LIMIT);
705 /* CPU frequency is 100 MHz, timer increments every 4 CPU clocks */
706 #define USECS_PER_JIFFY (1000000 / HZ)
707 #define TICK_TIMER_LIMIT ((100 * 1000000 / 4) / HZ)
709 static unsigned int pcic_cycles_offset(void)
713 value = readl(pcic0.pcic_regs + PCI_SYS_COUNTER);
714 count = value & ~PCI_SYS_COUNTER_OVERFLOW;
716 if (value & PCI_SYS_COUNTER_OVERFLOW)
717 count += TICK_TIMER_LIMIT;
719 * We divide all by HZ
720 * to have microsecond resolution and to avoid overflow
722 count = ((count / HZ) * USECS_PER_JIFFY) / (TICK_TIMER_LIMIT / HZ);
724 /* Coordinate with the sparc_config.clock_rate setting */
728 void __init pci_time_init(void)
730 struct linux_pcic *pcic = &pcic0;
737 * The clock_rate is in SBUS dimension.
738 * We take into account this in pcic_cycles_offset()
740 sparc_config.clock_rate = SBUS_CLOCK_RATE / HZ;
741 sparc_config.features |= FEAT_L10_CLOCKEVENT;
743 sparc_config.features |= FEAT_L10_CLOCKSOURCE;
744 sparc_config.get_cycles_offset = pcic_cycles_offset;
746 writel (TICK_TIMER_LIMIT, pcic->pcic_regs+PCI_SYS_LIMIT);
747 /* PROM should set appropriate irq */
748 v = readb(pcic->pcic_regs+PCI_COUNTER_IRQ);
749 timer_irq = PCI_COUNTER_IRQ_SYS(v);
750 writel (PCI_COUNTER_IRQ_SET(timer_irq, 0),
751 pcic->pcic_regs+PCI_COUNTER_IRQ);
752 irq = pcic_build_device_irq(NULL, timer_irq);
753 err = request_irq(irq, timer_interrupt,
754 IRQF_TIMER, "timer", NULL);
756 prom_printf("time_init: unable to attach IRQ%d\n", timer_irq);
764 static void watchdog_reset() {
765 writeb(0, pcic->pcic_regs+PCI_SYS_STATUS);
769 resource_size_t pcibios_align_resource(void *data, const struct resource *res,
770 resource_size_t size, resource_size_t align)
775 int pcibios_enable_device(struct pci_dev *pdev, int mask)
783 void pcic_nmi(unsigned int pend, struct pt_regs *regs)
786 pend = flip_dword(pend);
788 if (!pcic_speculative || (pend & PCI_SYS_INT_PENDING_PIO) == 0) {
790 * XXX On CP-1200 PCI #SERR may happen, we do not know
791 * what to do about it yet.
793 printk("Aiee, NMI pend 0x%x pc 0x%x spec %d, hanging\n",
794 pend, (int)regs->pc, pcic_speculative);
797 pcic_speculative = 0;
799 regs->pc = regs->npc;
803 static inline unsigned long get_irqmask(int irq_nr)
808 static void pcic_mask_irq(struct irq_data *data)
810 unsigned long mask, flags;
812 mask = (unsigned long)data->chip_data;
813 local_irq_save(flags);
814 writel(mask, pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_SET);
815 local_irq_restore(flags);
818 static void pcic_unmask_irq(struct irq_data *data)
820 unsigned long mask, flags;
822 mask = (unsigned long)data->chip_data;
823 local_irq_save(flags);
824 writel(mask, pcic0.pcic_regs+PCI_SYS_INT_TARGET_MASK_CLEAR);
825 local_irq_restore(flags);
828 static unsigned int pcic_startup_irq(struct irq_data *data)
831 pcic_unmask_irq(data);
835 static struct irq_chip pcic_irq = {
837 .irq_startup = pcic_startup_irq,
838 .irq_mask = pcic_mask_irq,
839 .irq_unmask = pcic_unmask_irq,
842 unsigned int pcic_build_device_irq(struct platform_device *op,
843 unsigned int real_irq)
849 mask = get_irqmask(real_irq);
853 irq = irq_alloc(real_irq, real_irq);
857 irq_set_chip_and_handler_name(irq, &pcic_irq,
858 handle_level_irq, "PCIC");
859 irq_set_chip_data(irq, (void *)mask);
866 static void pcic_load_profile_irq(int cpu, unsigned int limit)
868 printk("PCIC: unimplemented code: FILE=%s LINE=%d", __FILE__, __LINE__);
871 void __init sun4m_pci_init_IRQ(void)
873 sparc_config.build_device_irq = pcic_build_device_irq;
874 sparc_config.clear_clock_irq = pcic_clear_clock_irq;
875 sparc_config.load_profile_irq = pcic_load_profile_irq;
879 * This probably belongs here rather than ioport.c because
880 * we do not want this crud linked into SBus kernels.
881 * Also, think for a moment about likes of floppy.c that
882 * include architecture specific parts. They may want to redefine ins/outs.
884 * We do not use horrible macros here because we want to
885 * advance pointer by sizeof(size).
887 void outsb(unsigned long addr, const void *src, unsigned long count)
891 outb(*(const char *)src, addr);
896 EXPORT_SYMBOL(outsb);
898 void outsw(unsigned long addr, const void *src, unsigned long count)
902 outw(*(const short *)src, addr);
907 EXPORT_SYMBOL(outsw);
909 void outsl(unsigned long addr, const void *src, unsigned long count)
913 outl(*(const long *)src, addr);
918 EXPORT_SYMBOL(outsl);
920 void insb(unsigned long addr, void *dst, unsigned long count)
924 *(unsigned char *)dst = inb(addr);
931 void insw(unsigned long addr, void *dst, unsigned long count)
935 *(unsigned short *)dst = inw(addr);
942 void insl(unsigned long addr, void *dst, unsigned long count)
947 * XXX I am sure we are in for an unaligned trap here.
949 *(unsigned long *)dst = inl(addr);
956 subsys_initcall(pcic_init);