1 /* $Id: sbus.c,v 1.19 2002/01/23 11:27:32 davem Exp $
2 * sbus.c: UltraSparc SBUS controller support.
4 * Copyright (C) 1999 David S. Miller (davem@redhat.com)
7 #include <linux/kernel.h>
8 #include <linux/types.h>
10 #include <linux/spinlock.h>
11 #include <linux/slab.h>
12 #include <linux/init.h>
13 #include <linux/interrupt.h>
19 #include <asm/cache.h>
23 #include <asm/starfire.h>
25 #include "iommu_common.h"
27 #define MAP_BASE ((u32)0xc0000000)
29 /* Offsets from iommu_regs */
30 #define SYSIO_IOMMUREG_BASE 0x2400UL
31 #define IOMMU_CONTROL (0x2400UL - 0x2400UL) /* IOMMU control register */
32 #define IOMMU_TSBBASE (0x2408UL - 0x2400UL) /* TSB base address register */
33 #define IOMMU_FLUSH (0x2410UL - 0x2400UL) /* IOMMU flush register */
34 #define IOMMU_VADIAG (0x4400UL - 0x2400UL) /* SBUS virtual address diagnostic */
35 #define IOMMU_TAGCMP (0x4408UL - 0x2400UL) /* TLB tag compare diagnostics */
36 #define IOMMU_LRUDIAG (0x4500UL - 0x2400UL) /* IOMMU LRU queue diagnostics */
37 #define IOMMU_TAGDIAG (0x4580UL - 0x2400UL) /* TLB tag diagnostics */
38 #define IOMMU_DRAMDIAG (0x4600UL - 0x2400UL) /* TLB data RAM diagnostics */
40 #define IOMMU_DRAM_VALID (1UL << 30UL)
42 /* Offsets from strbuf_regs */
43 #define SYSIO_STRBUFREG_BASE 0x2800UL
44 #define STRBUF_CONTROL (0x2800UL - 0x2800UL) /* Control */
45 #define STRBUF_PFLUSH (0x2808UL - 0x2800UL) /* Page flush/invalidate */
46 #define STRBUF_FSYNC (0x2810UL - 0x2800UL) /* Flush synchronization */
47 #define STRBUF_DRAMDIAG (0x5000UL - 0x2800UL) /* data RAM diagnostic */
48 #define STRBUF_ERRDIAG (0x5400UL - 0x2800UL) /* error status diagnostics */
49 #define STRBUF_PTAGDIAG (0x5800UL - 0x2800UL) /* Page tag diagnostics */
50 #define STRBUF_LTAGDIAG (0x5900UL - 0x2800UL) /* Line tag diagnostics */
52 #define STRBUF_TAG_VALID 0x02UL
54 /* Enable 64-bit DVMA mode for the given device. */
55 void sbus_set_sbus64(struct sbus_dev *sdev, int bursts)
57 struct iommu *iommu = sdev->ofdev.dev.archdata.iommu;
58 int slot = sdev->slot;
59 unsigned long cfg_reg;
62 cfg_reg = iommu->write_complete_reg;
90 val = upa_readq(cfg_reg);
91 if (val & (1UL << 14UL)) {
92 /* Extended transfer mode already enabled. */
98 if (bursts & DMA_BURST8)
100 if (bursts & DMA_BURST16)
102 if (bursts & DMA_BURST32)
104 if (bursts & DMA_BURST64)
106 upa_writeq(val, cfg_reg);
109 /* INO number to IMAP register offset for SYSIO external IRQ's.
110 * This should conform to both Sunfire/Wildfire server and Fusion
113 #define SYSIO_IMAP_SLOT0 0x2c00UL
114 #define SYSIO_IMAP_SLOT1 0x2c08UL
115 #define SYSIO_IMAP_SLOT2 0x2c10UL
116 #define SYSIO_IMAP_SLOT3 0x2c18UL
117 #define SYSIO_IMAP_SCSI 0x3000UL
118 #define SYSIO_IMAP_ETH 0x3008UL
119 #define SYSIO_IMAP_BPP 0x3010UL
120 #define SYSIO_IMAP_AUDIO 0x3018UL
121 #define SYSIO_IMAP_PFAIL 0x3020UL
122 #define SYSIO_IMAP_KMS 0x3028UL
123 #define SYSIO_IMAP_FLPY 0x3030UL
124 #define SYSIO_IMAP_SHW 0x3038UL
125 #define SYSIO_IMAP_KBD 0x3040UL
126 #define SYSIO_IMAP_MS 0x3048UL
127 #define SYSIO_IMAP_SER 0x3050UL
128 #define SYSIO_IMAP_TIM0 0x3060UL
129 #define SYSIO_IMAP_TIM1 0x3068UL
130 #define SYSIO_IMAP_UE 0x3070UL
131 #define SYSIO_IMAP_CE 0x3078UL
132 #define SYSIO_IMAP_SBERR 0x3080UL
133 #define SYSIO_IMAP_PMGMT 0x3088UL
134 #define SYSIO_IMAP_GFX 0x3090UL
135 #define SYSIO_IMAP_EUPA 0x3098UL
137 #define bogon ((unsigned long) -1)
138 static unsigned long sysio_irq_offsets[] = {
139 /* SBUS Slot 0 --> 3, level 1 --> 7 */
140 SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
141 SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0,
142 SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
143 SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1,
144 SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
145 SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2,
146 SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
147 SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3,
149 /* Onboard devices (not relevant/used on SunFire). */
178 #define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets)
180 /* Convert Interrupt Mapping register pointer to associated
181 * Interrupt Clear register pointer, SYSIO specific version.
183 #define SYSIO_ICLR_UNUSED0 0x3400UL
184 #define SYSIO_ICLR_SLOT0 0x3408UL
185 #define SYSIO_ICLR_SLOT1 0x3448UL
186 #define SYSIO_ICLR_SLOT2 0x3488UL
187 #define SYSIO_ICLR_SLOT3 0x34c8UL
188 static unsigned long sysio_imap_to_iclr(unsigned long imap)
190 unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0;
194 unsigned int sbus_build_irq(void *buscookie, unsigned int ino)
196 struct sbus_bus *sbus = (struct sbus_bus *)buscookie;
197 struct iommu *iommu = sbus->ofdev.dev.archdata.iommu;
198 unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
199 unsigned long imap, iclr;
202 imap = sysio_irq_offsets[ino];
203 if (imap == ((unsigned long)-1)) {
204 prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n",
210 /* SYSIO inconsistency. For external SLOTS, we have to select
211 * the right ICLR register based upon the lower SBUS irq level
215 iclr = sysio_imap_to_iclr(imap);
217 int sbus_slot = (ino & 0x18)>>3;
219 sbus_level = ino & 0x7;
223 iclr = reg_base + SYSIO_ICLR_SLOT0;
226 iclr = reg_base + SYSIO_ICLR_SLOT1;
229 iclr = reg_base + SYSIO_ICLR_SLOT2;
233 iclr = reg_base + SYSIO_ICLR_SLOT3;
237 iclr += ((unsigned long)sbus_level - 1UL) * 8UL;
239 return build_irq(sbus_level, iclr, imap);
242 /* Error interrupt handling. */
243 #define SYSIO_UE_AFSR 0x0030UL
244 #define SYSIO_UE_AFAR 0x0038UL
245 #define SYSIO_UEAFSR_PPIO 0x8000000000000000UL /* Primary PIO cause */
246 #define SYSIO_UEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read cause */
247 #define SYSIO_UEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write cause */
248 #define SYSIO_UEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO is cause */
249 #define SYSIO_UEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read cause */
250 #define SYSIO_UEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write cause*/
251 #define SYSIO_UEAFSR_RESV1 0x03ff000000000000UL /* Reserved */
252 #define SYSIO_UEAFSR_DOFF 0x0000e00000000000UL /* Doubleword Offset */
253 #define SYSIO_UEAFSR_SIZE 0x00001c0000000000UL /* Bad transfer size 2^SIZE */
254 #define SYSIO_UEAFSR_MID 0x000003e000000000UL /* UPA MID causing the fault */
255 #define SYSIO_UEAFSR_RESV2 0x0000001fffffffffUL /* Reserved */
256 static irqreturn_t sysio_ue_handler(int irq, void *dev_id)
258 struct sbus_bus *sbus = dev_id;
259 struct iommu *iommu = sbus->ofdev.dev.archdata.iommu;
260 unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
261 unsigned long afsr_reg, afar_reg;
262 unsigned long afsr, afar, error_bits;
265 afsr_reg = reg_base + SYSIO_UE_AFSR;
266 afar_reg = reg_base + SYSIO_UE_AFAR;
268 /* Latch error status. */
269 afsr = upa_readq(afsr_reg);
270 afar = upa_readq(afar_reg);
272 /* Clear primary/secondary error status bits. */
274 (SYSIO_UEAFSR_PPIO | SYSIO_UEAFSR_PDRD | SYSIO_UEAFSR_PDWR |
275 SYSIO_UEAFSR_SPIO | SYSIO_UEAFSR_SDRD | SYSIO_UEAFSR_SDWR);
276 upa_writeq(error_bits, afsr_reg);
279 printk("SYSIO[%x]: Uncorrectable ECC Error, primary error type[%s]\n",
281 (((error_bits & SYSIO_UEAFSR_PPIO) ?
283 ((error_bits & SYSIO_UEAFSR_PDRD) ?
285 ((error_bits & SYSIO_UEAFSR_PDWR) ?
286 "DVMA Write" : "???")))));
287 printk("SYSIO[%x]: DOFF[%lx] SIZE[%lx] MID[%lx]\n",
289 (afsr & SYSIO_UEAFSR_DOFF) >> 45UL,
290 (afsr & SYSIO_UEAFSR_SIZE) >> 42UL,
291 (afsr & SYSIO_UEAFSR_MID) >> 37UL);
292 printk("SYSIO[%x]: AFAR[%016lx]\n", sbus->portid, afar);
293 printk("SYSIO[%x]: Secondary UE errors [", sbus->portid);
295 if (afsr & SYSIO_UEAFSR_SPIO) {
299 if (afsr & SYSIO_UEAFSR_SDRD) {
301 printk("(DVMA Read)");
303 if (afsr & SYSIO_UEAFSR_SDWR) {
305 printk("(DVMA Write)");
314 #define SYSIO_CE_AFSR 0x0040UL
315 #define SYSIO_CE_AFAR 0x0048UL
316 #define SYSIO_CEAFSR_PPIO 0x8000000000000000UL /* Primary PIO cause */
317 #define SYSIO_CEAFSR_PDRD 0x4000000000000000UL /* Primary DVMA read cause */
318 #define SYSIO_CEAFSR_PDWR 0x2000000000000000UL /* Primary DVMA write cause */
319 #define SYSIO_CEAFSR_SPIO 0x1000000000000000UL /* Secondary PIO cause */
320 #define SYSIO_CEAFSR_SDRD 0x0800000000000000UL /* Secondary DVMA read cause */
321 #define SYSIO_CEAFSR_SDWR 0x0400000000000000UL /* Secondary DVMA write cause*/
322 #define SYSIO_CEAFSR_RESV1 0x0300000000000000UL /* Reserved */
323 #define SYSIO_CEAFSR_ESYND 0x00ff000000000000UL /* Syndrome Bits */
324 #define SYSIO_CEAFSR_DOFF 0x0000e00000000000UL /* Double Offset */
325 #define SYSIO_CEAFSR_SIZE 0x00001c0000000000UL /* Bad transfer size 2^SIZE */
326 #define SYSIO_CEAFSR_MID 0x000003e000000000UL /* UPA MID causing the fault */
327 #define SYSIO_CEAFSR_RESV2 0x0000001fffffffffUL /* Reserved */
328 static irqreturn_t sysio_ce_handler(int irq, void *dev_id)
330 struct sbus_bus *sbus = dev_id;
331 struct iommu *iommu = sbus->ofdev.dev.archdata.iommu;
332 unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
333 unsigned long afsr_reg, afar_reg;
334 unsigned long afsr, afar, error_bits;
337 afsr_reg = reg_base + SYSIO_CE_AFSR;
338 afar_reg = reg_base + SYSIO_CE_AFAR;
340 /* Latch error status. */
341 afsr = upa_readq(afsr_reg);
342 afar = upa_readq(afar_reg);
344 /* Clear primary/secondary error status bits. */
346 (SYSIO_CEAFSR_PPIO | SYSIO_CEAFSR_PDRD | SYSIO_CEAFSR_PDWR |
347 SYSIO_CEAFSR_SPIO | SYSIO_CEAFSR_SDRD | SYSIO_CEAFSR_SDWR);
348 upa_writeq(error_bits, afsr_reg);
350 printk("SYSIO[%x]: Correctable ECC Error, primary error type[%s]\n",
352 (((error_bits & SYSIO_CEAFSR_PPIO) ?
354 ((error_bits & SYSIO_CEAFSR_PDRD) ?
356 ((error_bits & SYSIO_CEAFSR_PDWR) ?
357 "DVMA Write" : "???")))));
359 /* XXX Use syndrome and afar to print out module string just like
360 * XXX UDB CE trap handler does... -DaveM
362 printk("SYSIO[%x]: DOFF[%lx] ECC Syndrome[%lx] Size[%lx] MID[%lx]\n",
364 (afsr & SYSIO_CEAFSR_DOFF) >> 45UL,
365 (afsr & SYSIO_CEAFSR_ESYND) >> 48UL,
366 (afsr & SYSIO_CEAFSR_SIZE) >> 42UL,
367 (afsr & SYSIO_CEAFSR_MID) >> 37UL);
368 printk("SYSIO[%x]: AFAR[%016lx]\n", sbus->portid, afar);
370 printk("SYSIO[%x]: Secondary CE errors [", sbus->portid);
372 if (afsr & SYSIO_CEAFSR_SPIO) {
376 if (afsr & SYSIO_CEAFSR_SDRD) {
378 printk("(DVMA Read)");
380 if (afsr & SYSIO_CEAFSR_SDWR) {
382 printk("(DVMA Write)");
391 #define SYSIO_SBUS_AFSR 0x2010UL
392 #define SYSIO_SBUS_AFAR 0x2018UL
393 #define SYSIO_SBAFSR_PLE 0x8000000000000000UL /* Primary Late PIO Error */
394 #define SYSIO_SBAFSR_PTO 0x4000000000000000UL /* Primary SBUS Timeout */
395 #define SYSIO_SBAFSR_PBERR 0x2000000000000000UL /* Primary SBUS Error ACK */
396 #define SYSIO_SBAFSR_SLE 0x1000000000000000UL /* Secondary Late PIO Error */
397 #define SYSIO_SBAFSR_STO 0x0800000000000000UL /* Secondary SBUS Timeout */
398 #define SYSIO_SBAFSR_SBERR 0x0400000000000000UL /* Secondary SBUS Error ACK */
399 #define SYSIO_SBAFSR_RESV1 0x03ff000000000000UL /* Reserved */
400 #define SYSIO_SBAFSR_RD 0x0000800000000000UL /* Primary was late PIO read */
401 #define SYSIO_SBAFSR_RESV2 0x0000600000000000UL /* Reserved */
402 #define SYSIO_SBAFSR_SIZE 0x00001c0000000000UL /* Size of transfer */
403 #define SYSIO_SBAFSR_MID 0x000003e000000000UL /* MID causing the error */
404 #define SYSIO_SBAFSR_RESV3 0x0000001fffffffffUL /* Reserved */
405 static irqreturn_t sysio_sbus_error_handler(int irq, void *dev_id)
407 struct sbus_bus *sbus = dev_id;
408 struct iommu *iommu = sbus->ofdev.dev.archdata.iommu;
409 unsigned long afsr_reg, afar_reg, reg_base;
410 unsigned long afsr, afar, error_bits;
413 reg_base = iommu->write_complete_reg - 0x2000UL;
414 afsr_reg = reg_base + SYSIO_SBUS_AFSR;
415 afar_reg = reg_base + SYSIO_SBUS_AFAR;
417 afsr = upa_readq(afsr_reg);
418 afar = upa_readq(afar_reg);
420 /* Clear primary/secondary error status bits. */
422 (SYSIO_SBAFSR_PLE | SYSIO_SBAFSR_PTO | SYSIO_SBAFSR_PBERR |
423 SYSIO_SBAFSR_SLE | SYSIO_SBAFSR_STO | SYSIO_SBAFSR_SBERR);
424 upa_writeq(error_bits, afsr_reg);
427 printk("SYSIO[%x]: SBUS Error, primary error type[%s] read(%d)\n",
429 (((error_bits & SYSIO_SBAFSR_PLE) ?
431 ((error_bits & SYSIO_SBAFSR_PTO) ?
433 ((error_bits & SYSIO_SBAFSR_PBERR) ?
434 "Error Ack" : "???")))),
435 (afsr & SYSIO_SBAFSR_RD) ? 1 : 0);
436 printk("SYSIO[%x]: size[%lx] MID[%lx]\n",
438 (afsr & SYSIO_SBAFSR_SIZE) >> 42UL,
439 (afsr & SYSIO_SBAFSR_MID) >> 37UL);
440 printk("SYSIO[%x]: AFAR[%016lx]\n", sbus->portid, afar);
441 printk("SYSIO[%x]: Secondary SBUS errors [", sbus->portid);
443 if (afsr & SYSIO_SBAFSR_SLE) {
445 printk("(Late PIO Error)");
447 if (afsr & SYSIO_SBAFSR_STO) {
449 printk("(Time Out)");
451 if (afsr & SYSIO_SBAFSR_SBERR) {
453 printk("(Error Ack)");
459 /* XXX check iommu/strbuf for further error status XXX */
464 #define ECC_CONTROL 0x0020UL
465 #define SYSIO_ECNTRL_ECCEN 0x8000000000000000UL /* Enable ECC Checking */
466 #define SYSIO_ECNTRL_UEEN 0x4000000000000000UL /* Enable UE Interrupts */
467 #define SYSIO_ECNTRL_CEEN 0x2000000000000000UL /* Enable CE Interrupts */
469 #define SYSIO_UE_INO 0x34
470 #define SYSIO_CE_INO 0x35
471 #define SYSIO_SBUSERR_INO 0x36
473 static void __init sysio_register_error_handlers(struct sbus_bus *sbus)
475 struct iommu *iommu = sbus->ofdev.dev.archdata.iommu;
476 unsigned long reg_base = iommu->write_complete_reg - 0x2000UL;
480 irq = sbus_build_irq(sbus, SYSIO_UE_INO);
481 if (request_irq(irq, sysio_ue_handler, 0,
482 "SYSIO_UE", sbus) < 0) {
483 prom_printf("SYSIO[%x]: Cannot register UE interrupt.\n",
488 irq = sbus_build_irq(sbus, SYSIO_CE_INO);
489 if (request_irq(irq, sysio_ce_handler, 0,
490 "SYSIO_CE", sbus) < 0) {
491 prom_printf("SYSIO[%x]: Cannot register CE interrupt.\n",
496 irq = sbus_build_irq(sbus, SYSIO_SBUSERR_INO);
497 if (request_irq(irq, sysio_sbus_error_handler, 0,
498 "SYSIO_SBERR", sbus) < 0) {
499 prom_printf("SYSIO[%x]: Cannot register SBUS Error interrupt.\n",
504 /* Now turn the error interrupts on and also enable ECC checking. */
505 upa_writeq((SYSIO_ECNTRL_ECCEN |
508 reg_base + ECC_CONTROL);
510 control = upa_readq(iommu->write_complete_reg);
511 control |= 0x100UL; /* SBUS Error Interrupt Enable */
512 upa_writeq(control, iommu->write_complete_reg);
515 /* Boot time initialization. */
516 static void __init sbus_iommu_init(int __node, struct sbus_bus *sbus)
518 const struct linux_prom64_registers *pr;
519 struct device_node *dp;
521 struct strbuf *strbuf;
522 unsigned long regs, reg_base;
526 dp = of_find_node_by_phandle(__node);
528 sbus->portid = of_getintprop_default(dp, "upa-portid", -1);
530 pr = of_get_property(dp, "reg", NULL);
532 prom_printf("sbus_iommu_init: Cannot map SYSIO "
533 "control registers.\n");
536 regs = pr->phys_addr;
538 iommu = kzalloc(sizeof(*iommu), GFP_ATOMIC);
540 goto fatal_memory_error;
541 strbuf = kzalloc(sizeof(*strbuf), GFP_ATOMIC);
543 goto fatal_memory_error;
545 sbus->ofdev.dev.archdata.iommu = iommu;
546 sbus->ofdev.dev.archdata.stc = strbuf;
548 reg_base = regs + SYSIO_IOMMUREG_BASE;
549 iommu->iommu_control = reg_base + IOMMU_CONTROL;
550 iommu->iommu_tsbbase = reg_base + IOMMU_TSBBASE;
551 iommu->iommu_flush = reg_base + IOMMU_FLUSH;
552 iommu->iommu_tags = iommu->iommu_control +
553 (IOMMU_TAGDIAG - IOMMU_CONTROL);
555 reg_base = regs + SYSIO_STRBUFREG_BASE;
556 strbuf->strbuf_control = reg_base + STRBUF_CONTROL;
557 strbuf->strbuf_pflush = reg_base + STRBUF_PFLUSH;
558 strbuf->strbuf_fsync = reg_base + STRBUF_FSYNC;
560 strbuf->strbuf_enabled = 1;
562 strbuf->strbuf_flushflag = (volatile unsigned long *)
563 ((((unsigned long)&strbuf->__flushflag_buf[0])
566 strbuf->strbuf_flushflag_pa = (unsigned long)
567 __pa(strbuf->strbuf_flushflag);
569 /* The SYSIO SBUS control register is used for dummy reads
570 * in order to ensure write completion.
572 iommu->write_complete_reg = regs + 0x2000UL;
574 printk("SYSIO: UPA portID %x, at %016lx\n",
577 /* Setup for TSB_SIZE=7, TBW_SIZE=0, MMU_DE=1, MMU_EN=1 */
578 if (iommu_table_init(iommu, IO_TSB_SIZE, MAP_BASE, 0xffffffff))
579 goto fatal_memory_error;
581 control = upa_readq(iommu->iommu_control);
582 control = ((7UL << 16UL) |
586 upa_writeq(control, iommu->iommu_control);
588 /* Clean out any cruft in the IOMMU using
589 * diagnostic accesses.
591 for (i = 0; i < 16; i++) {
592 unsigned long dram, tag;
594 dram = iommu->iommu_control + (IOMMU_DRAMDIAG - IOMMU_CONTROL);
595 tag = iommu->iommu_control + (IOMMU_TAGDIAG - IOMMU_CONTROL);
597 dram += (unsigned long)i * 8UL;
598 tag += (unsigned long)i * 8UL;
602 upa_readq(iommu->write_complete_reg);
604 /* Give the TSB to SYSIO. */
605 upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);
607 /* Setup streaming buffer, DE=1 SB_EN=1 */
608 control = (1UL << 1UL) | (1UL << 0UL);
609 upa_writeq(control, strbuf->strbuf_control);
611 /* Clear out the tags using diagnostics. */
612 for (i = 0; i < 16; i++) {
613 unsigned long ptag, ltag;
615 ptag = strbuf->strbuf_control +
616 (STRBUF_PTAGDIAG - STRBUF_CONTROL);
617 ltag = strbuf->strbuf_control +
618 (STRBUF_LTAGDIAG - STRBUF_CONTROL);
619 ptag += (unsigned long)i * 8UL;
620 ltag += (unsigned long)i * 8UL;
622 upa_writeq(0UL, ptag);
623 upa_writeq(0UL, ltag);
626 /* Enable DVMA arbitration for all devices/slots. */
627 control = upa_readq(iommu->write_complete_reg);
629 upa_writeq(control, iommu->write_complete_reg);
631 /* Now some Xfire specific grot... */
632 if (this_is_starfire)
633 starfire_hookup(sbus->portid);
635 sysio_register_error_handlers(sbus);
639 prom_printf("sbus_iommu_init: Fatal memory allocation error.\n");
642 void sbus_fill_device_irq(struct sbus_dev *sdev)
644 struct device_node *dp = of_find_node_by_phandle(sdev->prom_node);
645 const struct linux_prom_irqs *irqs;
647 irqs = of_get_property(dp, "interrupts", NULL);
652 unsigned int pri = irqs[0].pri;
656 pri += sdev->slot * 8;
658 sdev->irqs[0] = sbus_build_irq(sdev->bus, pri);
662 void __init sbus_arch_bus_ranges_init(struct device_node *pn, struct sbus_bus *sbus)
666 void __init sbus_setup_iommu(struct sbus_bus *sbus, struct device_node *dp)
668 sbus_iommu_init(dp->node, sbus);
671 void __init sbus_setup_arch_props(struct sbus_bus *sbus, struct device_node *dp)
675 int __init sbus_arch_preinit(void)
680 void __init sbus_arch_postinit(void)
682 extern void firetruck_init(void);