1 // SPDX-License-Identifier: GPL-2.0
3 * linux/arch/alpha/kernel/core_wildfire.c
10 #define __EXTERN_INLINE inline
12 #include <asm/core_wildfire.h>
13 #undef __EXTERN_INLINE
15 #include <linux/types.h>
16 #include <linux/pci.h>
17 #include <linux/sched.h>
18 #include <linux/init.h>
20 #include <asm/ptrace.h>
26 #define DEBUG_CONFIG 0
27 #define DEBUG_DUMP_REGS 0
28 #define DEBUG_DUMP_CONFIG 1
31 # define DBG_CFG(args) printk args
33 # define DBG_CFG(args)
37 static void wildfire_dump_pci_regs(int qbbno, int hoseno);
38 static void wildfire_dump_pca_regs(int qbbno, int pcano);
39 static void wildfire_dump_qsa_regs(int qbbno);
40 static void wildfire_dump_qsd_regs(int qbbno);
41 static void wildfire_dump_iop_regs(int qbbno);
42 static void wildfire_dump_gp_regs(int qbbno);
45 static void wildfire_dump_hardware_config(void);
48 unsigned char wildfire_hard_qbb_map[WILDFIRE_MAX_QBB];
49 unsigned char wildfire_soft_qbb_map[WILDFIRE_MAX_QBB];
50 #define QBB_MAP_EMPTY 0xff
52 unsigned long wildfire_hard_qbb_mask;
53 unsigned long wildfire_soft_qbb_mask;
54 unsigned long wildfire_gp_mask;
55 unsigned long wildfire_hs_mask;
56 unsigned long wildfire_iop_mask;
57 unsigned long wildfire_ior_mask;
58 unsigned long wildfire_pca_mask;
59 unsigned long wildfire_cpu_mask;
60 unsigned long wildfire_mem_mask;
63 wildfire_init_hose(int qbbno, int hoseno)
65 struct pci_controller *hose;
68 hose = alloc_pci_controller();
69 hose->io_space = alloc_resource();
70 hose->mem_space = alloc_resource();
72 /* This is for userland consumption. */
73 hose->sparse_mem_base = 0;
74 hose->sparse_io_base = 0;
75 hose->dense_mem_base = WILDFIRE_MEM(qbbno, hoseno);
76 hose->dense_io_base = WILDFIRE_IO(qbbno, hoseno);
78 hose->config_space_base = WILDFIRE_CONF(qbbno, hoseno);
79 hose->index = (qbbno << 3) + hoseno;
81 hose->io_space->start = WILDFIRE_IO(qbbno, hoseno) - WILDFIRE_IO_BIAS;
82 hose->io_space->end = hose->io_space->start + WILDFIRE_IO_SPACE - 1;
83 hose->io_space->name = pci_io_names[hoseno];
84 hose->io_space->flags = IORESOURCE_IO;
86 hose->mem_space->start = WILDFIRE_MEM(qbbno, hoseno)-WILDFIRE_MEM_BIAS;
87 hose->mem_space->end = hose->mem_space->start + 0xffffffff;
88 hose->mem_space->name = pci_mem_names[hoseno];
89 hose->mem_space->flags = IORESOURCE_MEM;
91 if (request_resource(&ioport_resource, hose->io_space) < 0)
92 printk(KERN_ERR "Failed to request IO on qbb %d hose %d\n",
94 if (request_resource(&iomem_resource, hose->mem_space) < 0)
95 printk(KERN_ERR "Failed to request MEM on qbb %d hose %d\n",
99 wildfire_dump_pci_regs(qbbno, hoseno);
103 * Set up the PCI to main memory translation windows.
105 * Note: Window 3 is scatter-gather only
107 * Window 0 is scatter-gather 8MB at 8MB (for isa)
108 * Window 1 is direct access 1GB at 1GB
109 * Window 2 is direct access 1GB at 2GB
110 * Window 3 is scatter-gather 128MB at 3GB
111 * ??? We ought to scale window 3 memory.
114 hose->sg_isa = iommu_arena_new(hose, 0x00800000, 0x00800000,
116 hose->sg_pci = iommu_arena_new(hose, 0xc0000000, 0x08000000,
119 pci = WILDFIRE_pci(qbbno, hoseno);
121 pci->pci_window[0].wbase.csr = hose->sg_isa->dma_base | 3;
122 pci->pci_window[0].wmask.csr = (hose->sg_isa->size - 1) & 0xfff00000;
123 pci->pci_window[0].tbase.csr = virt_to_phys(hose->sg_isa->ptes);
125 pci->pci_window[1].wbase.csr = 0x40000000 | 1;
126 pci->pci_window[1].wmask.csr = (0x40000000 -1) & 0xfff00000;
127 pci->pci_window[1].tbase.csr = 0;
129 pci->pci_window[2].wbase.csr = 0x80000000 | 1;
130 pci->pci_window[2].wmask.csr = (0x40000000 -1) & 0xfff00000;
131 pci->pci_window[2].tbase.csr = 0x40000000;
133 pci->pci_window[3].wbase.csr = hose->sg_pci->dma_base | 3;
134 pci->pci_window[3].wmask.csr = (hose->sg_pci->size - 1) & 0xfff00000;
135 pci->pci_window[3].tbase.csr = virt_to_phys(hose->sg_pci->ptes);
137 wildfire_pci_tbi(hose, 0, 0); /* Flush TLB at the end. */
141 wildfire_init_pca(int qbbno, int pcano)
144 /* Test for PCA existence first. */
145 if (!WILDFIRE_PCA_EXISTS(qbbno, pcano))
149 wildfire_dump_pca_regs(qbbno, pcano);
152 /* Do both hoses of the PCA. */
153 wildfire_init_hose(qbbno, (pcano << 1) + 0);
154 wildfire_init_hose(qbbno, (pcano << 1) + 1);
158 wildfire_init_qbb(int qbbno)
162 /* Test for QBB existence first. */
163 if (!WILDFIRE_QBB_EXISTS(qbbno))
167 wildfire_dump_qsa_regs(qbbno);
168 wildfire_dump_qsd_regs(qbbno);
169 wildfire_dump_iop_regs(qbbno);
170 wildfire_dump_gp_regs(qbbno);
173 /* Init all PCAs here. */
174 for (pcano = 0; pcano < WILDFIRE_PCA_PER_QBB; pcano++) {
175 wildfire_init_pca(qbbno, pcano);
180 wildfire_hardware_probe(void)
183 unsigned int hard_qbb, soft_qbb;
184 wildfire_fast_qsd *fast = WILDFIRE_fast_qsd();
193 temp = fast->qsd_whami.csr;
195 printk(KERN_ERR "fast QSD_WHAMI at base %p is 0x%lx\n", fast, temp);
198 hard_qbb = (temp >> 8) & 7;
199 soft_qbb = (temp >> 4) & 7;
201 /* Init the HW configuration variables. */
202 wildfire_hard_qbb_mask = (1 << hard_qbb);
203 wildfire_soft_qbb_mask = (1 << soft_qbb);
205 wildfire_gp_mask = 0;
206 wildfire_hs_mask = 0;
207 wildfire_iop_mask = 0;
208 wildfire_ior_mask = 0;
209 wildfire_pca_mask = 0;
211 wildfire_cpu_mask = 0;
212 wildfire_mem_mask = 0;
214 memset(wildfire_hard_qbb_map, QBB_MAP_EMPTY, WILDFIRE_MAX_QBB);
215 memset(wildfire_soft_qbb_map, QBB_MAP_EMPTY, WILDFIRE_MAX_QBB);
217 /* First, determine which QBBs are present. */
218 qsa = WILDFIRE_qsa(soft_qbb);
220 temp = qsa->qsa_qbb_id.csr;
222 printk(KERN_ERR "QSA_QBB_ID at base %p is 0x%lx\n", qsa, temp);
225 if (temp & 0x40) /* Is there an HS? */
226 wildfire_hs_mask = 1;
228 if (temp & 0x20) { /* Is there a GP? */
229 gp = WILDFIRE_gp(soft_qbb);
231 for (i = 0; i < 4; i++) {
232 temp |= gp->gpa_qbb_map[i].csr << (i * 8);
234 printk(KERN_ERR "GPA_QBB_MAP[%d] at base %p is 0x%lx\n",
239 for (hard_qbb = 0; hard_qbb < WILDFIRE_MAX_QBB; hard_qbb++) {
240 if (temp & 8) { /* Is there a QBB? */
242 wildfire_hard_qbb_mask |= (1 << hard_qbb);
243 wildfire_soft_qbb_mask |= (1 << soft_qbb);
247 wildfire_gp_mask = wildfire_soft_qbb_mask;
250 /* Next determine each QBBs resources. */
251 for (soft_qbb = 0; soft_qbb < WILDFIRE_MAX_QBB; soft_qbb++) {
252 if (WILDFIRE_QBB_EXISTS(soft_qbb)) {
253 qsd = WILDFIRE_qsd(soft_qbb);
254 temp = qsd->qsd_whami.csr;
256 printk(KERN_ERR "QSD_WHAMI at base %p is 0x%lx\n", qsd, temp);
258 hard_qbb = (temp >> 8) & 7;
259 wildfire_hard_qbb_map[hard_qbb] = soft_qbb;
260 wildfire_soft_qbb_map[soft_qbb] = hard_qbb;
262 qsa = WILDFIRE_qsa(soft_qbb);
263 temp = qsa->qsa_qbb_pop[0].csr;
265 printk(KERN_ERR "QSA_QBB_POP_0 at base %p is 0x%lx\n", qsa, temp);
267 wildfire_cpu_mask |= ((temp >> 0) & 0xf) << (soft_qbb << 2);
268 wildfire_mem_mask |= ((temp >> 4) & 0xf) << (soft_qbb << 2);
270 temp = qsa->qsa_qbb_pop[1].csr;
272 printk(KERN_ERR "QSA_QBB_POP_1 at base %p is 0x%lx\n", qsa, temp);
274 wildfire_iop_mask |= (1 << soft_qbb);
275 wildfire_ior_mask |= ((temp >> 4) & 0xf) << (soft_qbb << 2);
277 temp = qsa->qsa_qbb_id.csr;
279 printk(KERN_ERR "QSA_QBB_ID at %p is 0x%lx\n", qsa, temp);
282 wildfire_gp_mask |= (1 << soft_qbb);
284 /* Probe for PCA existence here. */
285 for (i = 0; i < WILDFIRE_PCA_PER_QBB; i++) {
286 iop = WILDFIRE_iop(soft_qbb);
287 ne = WILDFIRE_ne(soft_qbb, i);
288 fe = WILDFIRE_fe(soft_qbb, i);
290 if ((iop->iop_hose[i].init.csr & 1) == 1 &&
291 ((ne->ne_what_am_i.csr & 0xf00000300UL) == 0x100000300UL) &&
292 ((fe->fe_what_am_i.csr & 0xf00000300UL) == 0x100000200UL))
294 wildfire_pca_mask |= 1 << ((soft_qbb << 2) + i);
300 #if DEBUG_DUMP_CONFIG
301 wildfire_dump_hardware_config();
306 wildfire_init_arch(void)
310 /* With multiple PCI buses, we play with I/O as physical addrs. */
311 ioport_resource.end = ~0UL;
314 /* Probe the hardware for info about configuration. */
315 wildfire_hardware_probe();
317 /* Now init all the found QBBs. */
318 for (qbbno = 0; qbbno < WILDFIRE_MAX_QBB; qbbno++) {
319 wildfire_init_qbb(qbbno);
322 /* Normal direct PCI DMA mapping. */
323 __direct_map_base = 0x40000000UL;
324 __direct_map_size = 0x80000000UL;
328 wildfire_machine_check(unsigned long vector, unsigned long la_ptr)
333 /* FIXME: clear pci errors */
337 process_mcheck_info(vector, la_ptr, "WILDFIRE",
338 mcheck_expected(smp_processor_id()));
342 wildfire_kill_arch(int mode)
347 wildfire_pci_tbi(struct pci_controller *hose, dma_addr_t start, dma_addr_t end)
349 int qbbno = hose->index >> 3;
350 int hoseno = hose->index & 7;
351 wildfire_pci *pci = WILDFIRE_pci(qbbno, hoseno);
354 pci->pci_flush_tlb.csr; /* reading does the trick */
358 mk_conf_addr(struct pci_bus *pbus, unsigned int device_fn, int where,
359 unsigned long *pci_addr, unsigned char *type1)
361 struct pci_controller *hose = pbus->sysdata;
363 u8 bus = pbus->number;
365 DBG_CFG(("mk_conf_addr(bus=%d ,device_fn=0x%x, where=0x%x, "
366 "pci_addr=0x%p, type1=0x%p)\n",
367 bus, device_fn, where, pci_addr, type1));
369 if (!pbus->parent) /* No parent means peer PCI bus. */
373 addr = (bus << 16) | (device_fn << 8) | where;
374 addr |= hose->config_space_base;
377 DBG_CFG(("mk_conf_addr: returning pci_addr 0x%lx\n", addr));
382 wildfire_read_config(struct pci_bus *bus, unsigned int devfn, int where,
383 int size, u32 *value)
388 if (mk_conf_addr(bus, devfn, where, &addr, &type1))
389 return PCIBIOS_DEVICE_NOT_FOUND;
393 *value = __kernel_ldbu(*(vucp)addr);
396 *value = __kernel_ldwu(*(vusp)addr);
399 *value = *(vuip)addr;
403 return PCIBIOS_SUCCESSFUL;
407 wildfire_write_config(struct pci_bus *bus, unsigned int devfn, int where,
413 if (mk_conf_addr(bus, devfn, where, &addr, &type1))
414 return PCIBIOS_DEVICE_NOT_FOUND;
418 __kernel_stb(value, *(vucp)addr);
420 __kernel_ldbu(*(vucp)addr);
423 __kernel_stw(value, *(vusp)addr);
425 __kernel_ldwu(*(vusp)addr);
434 return PCIBIOS_SUCCESSFUL;
437 struct pci_ops wildfire_pci_ops =
439 .read = wildfire_read_config,
440 .write = wildfire_write_config,
447 int wildfire_pa_to_nid(unsigned long pa)
452 int wildfire_cpuid_to_nid(int cpuid)
454 /* assume 4 CPUs per node */
458 unsigned long wildfire_node_mem_start(int nid)
461 return (unsigned long)nid * (64UL * 1024 * 1024 * 1024);
464 unsigned long wildfire_node_mem_size(int nid)
467 return 64UL * 1024 * 1024 * 1024;
473 wildfire_dump_pci_regs(int qbbno, int hoseno)
475 wildfire_pci *pci = WILDFIRE_pci(qbbno, hoseno);
478 printk(KERN_ERR "PCI registers for QBB %d hose %d (%p)\n",
481 printk(KERN_ERR " PCI_IO_ADDR_EXT: 0x%16lx\n",
482 pci->pci_io_addr_ext.csr);
483 printk(KERN_ERR " PCI_CTRL: 0x%16lx\n", pci->pci_ctrl.csr);
484 printk(KERN_ERR " PCI_ERR_SUM: 0x%16lx\n", pci->pci_err_sum.csr);
485 printk(KERN_ERR " PCI_ERR_ADDR: 0x%16lx\n", pci->pci_err_addr.csr);
486 printk(KERN_ERR " PCI_STALL_CNT: 0x%16lx\n", pci->pci_stall_cnt.csr);
487 printk(KERN_ERR " PCI_PEND_INT: 0x%16lx\n", pci->pci_pend_int.csr);
488 printk(KERN_ERR " PCI_SENT_INT: 0x%16lx\n", pci->pci_sent_int.csr);
490 printk(KERN_ERR " DMA window registers for QBB %d hose %d (%p)\n",
492 for (i = 0; i < 4; i++) {
493 printk(KERN_ERR " window %d: 0x%16lx 0x%16lx 0x%16lx\n", i,
494 pci->pci_window[i].wbase.csr,
495 pci->pci_window[i].wmask.csr,
496 pci->pci_window[i].tbase.csr);
498 printk(KERN_ERR "\n");
502 wildfire_dump_pca_regs(int qbbno, int pcano)
504 wildfire_pca *pca = WILDFIRE_pca(qbbno, pcano);
507 printk(KERN_ERR "PCA registers for QBB %d PCA %d (%p)\n",
510 printk(KERN_ERR " PCA_WHAT_AM_I: 0x%16lx\n", pca->pca_what_am_i.csr);
511 printk(KERN_ERR " PCA_ERR_SUM: 0x%16lx\n", pca->pca_err_sum.csr);
512 printk(KERN_ERR " PCA_PEND_INT: 0x%16lx\n", pca->pca_pend_int.csr);
513 printk(KERN_ERR " PCA_SENT_INT: 0x%16lx\n", pca->pca_sent_int.csr);
514 printk(KERN_ERR " PCA_STDIO_EL: 0x%16lx\n",
515 pca->pca_stdio_edge_level.csr);
517 printk(KERN_ERR " PCA target registers for QBB %d PCA %d (%p)\n",
519 for (i = 0; i < 4; i++) {
520 printk(KERN_ERR " target %d: 0x%16lx 0x%16lx\n", i,
521 pca->pca_int[i].target.csr,
522 pca->pca_int[i].enable.csr);
525 printk(KERN_ERR "\n");
529 wildfire_dump_qsa_regs(int qbbno)
531 wildfire_qsa *qsa = WILDFIRE_qsa(qbbno);
534 printk(KERN_ERR "QSA registers for QBB %d (%p)\n", qbbno, qsa);
536 printk(KERN_ERR " QSA_QBB_ID: 0x%16lx\n", qsa->qsa_qbb_id.csr);
537 printk(KERN_ERR " QSA_PORT_ENA: 0x%16lx\n", qsa->qsa_port_ena.csr);
538 printk(KERN_ERR " QSA_REF_INT: 0x%16lx\n", qsa->qsa_ref_int.csr);
540 for (i = 0; i < 5; i++)
541 printk(KERN_ERR " QSA_CONFIG_%d: 0x%16lx\n",
542 i, qsa->qsa_config[i].csr);
544 for (i = 0; i < 2; i++)
545 printk(KERN_ERR " QSA_QBB_POP_%d: 0x%16lx\n",
546 i, qsa->qsa_qbb_pop[0].csr);
548 printk(KERN_ERR "\n");
552 wildfire_dump_qsd_regs(int qbbno)
554 wildfire_qsd *qsd = WILDFIRE_qsd(qbbno);
556 printk(KERN_ERR "QSD registers for QBB %d (%p)\n", qbbno, qsd);
558 printk(KERN_ERR " QSD_WHAMI: 0x%16lx\n", qsd->qsd_whami.csr);
559 printk(KERN_ERR " QSD_REV: 0x%16lx\n", qsd->qsd_rev.csr);
560 printk(KERN_ERR " QSD_PORT_PRESENT: 0x%16lx\n",
561 qsd->qsd_port_present.csr);
562 printk(KERN_ERR " QSD_PORT_ACTIVE: 0x%16lx\n",
563 qsd->qsd_port_active.csr);
564 printk(KERN_ERR " QSD_FAULT_ENA: 0x%16lx\n",
565 qsd->qsd_fault_ena.csr);
566 printk(KERN_ERR " QSD_CPU_INT_ENA: 0x%16lx\n",
567 qsd->qsd_cpu_int_ena.csr);
568 printk(KERN_ERR " QSD_MEM_CONFIG: 0x%16lx\n",
569 qsd->qsd_mem_config.csr);
570 printk(KERN_ERR " QSD_ERR_SUM: 0x%16lx\n",
571 qsd->qsd_err_sum.csr);
573 printk(KERN_ERR "\n");
577 wildfire_dump_iop_regs(int qbbno)
579 wildfire_iop *iop = WILDFIRE_iop(qbbno);
582 printk(KERN_ERR "IOP registers for QBB %d (%p)\n", qbbno, iop);
584 printk(KERN_ERR " IOA_CONFIG: 0x%16lx\n", iop->ioa_config.csr);
585 printk(KERN_ERR " IOD_CONFIG: 0x%16lx\n", iop->iod_config.csr);
586 printk(KERN_ERR " IOP_SWITCH_CREDITS: 0x%16lx\n",
587 iop->iop_switch_credits.csr);
588 printk(KERN_ERR " IOP_HOSE_CREDITS: 0x%16lx\n",
589 iop->iop_hose_credits.csr);
591 for (i = 0; i < 4; i++)
592 printk(KERN_ERR " IOP_HOSE_%d_INIT: 0x%16lx\n",
593 i, iop->iop_hose[i].init.csr);
594 for (i = 0; i < 4; i++)
595 printk(KERN_ERR " IOP_DEV_INT_TARGET_%d: 0x%16lx\n",
596 i, iop->iop_dev_int[i].target.csr);
598 printk(KERN_ERR "\n");
602 wildfire_dump_gp_regs(int qbbno)
604 wildfire_gp *gp = WILDFIRE_gp(qbbno);
607 printk(KERN_ERR "GP registers for QBB %d (%p)\n", qbbno, gp);
608 for (i = 0; i < 4; i++)
609 printk(KERN_ERR " GPA_QBB_MAP_%d: 0x%16lx\n",
610 i, gp->gpa_qbb_map[i].csr);
612 printk(KERN_ERR " GPA_MEM_POP_MAP: 0x%16lx\n",
613 gp->gpa_mem_pop_map.csr);
614 printk(KERN_ERR " GPA_SCRATCH: 0x%16lx\n", gp->gpa_scratch.csr);
615 printk(KERN_ERR " GPA_DIAG: 0x%16lx\n", gp->gpa_diag.csr);
616 printk(KERN_ERR " GPA_CONFIG_0: 0x%16lx\n", gp->gpa_config_0.csr);
617 printk(KERN_ERR " GPA_INIT_ID: 0x%16lx\n", gp->gpa_init_id.csr);
618 printk(KERN_ERR " GPA_CONFIG_2: 0x%16lx\n", gp->gpa_config_2.csr);
620 printk(KERN_ERR "\n");
622 #endif /* DUMP_REGS */
624 #if DEBUG_DUMP_CONFIG
626 wildfire_dump_hardware_config(void)
630 printk(KERN_ERR "Probed Hardware Configuration\n");
632 printk(KERN_ERR " hard_qbb_mask: 0x%16lx\n", wildfire_hard_qbb_mask);
633 printk(KERN_ERR " soft_qbb_mask: 0x%16lx\n", wildfire_soft_qbb_mask);
635 printk(KERN_ERR " gp_mask: 0x%16lx\n", wildfire_gp_mask);
636 printk(KERN_ERR " hs_mask: 0x%16lx\n", wildfire_hs_mask);
637 printk(KERN_ERR " iop_mask: 0x%16lx\n", wildfire_iop_mask);
638 printk(KERN_ERR " ior_mask: 0x%16lx\n", wildfire_ior_mask);
639 printk(KERN_ERR " pca_mask: 0x%16lx\n", wildfire_pca_mask);
641 printk(KERN_ERR " cpu_mask: 0x%16lx\n", wildfire_cpu_mask);
642 printk(KERN_ERR " mem_mask: 0x%16lx\n", wildfire_mem_mask);
644 printk(" hard_qbb_map: ");
645 for (i = 0; i < WILDFIRE_MAX_QBB; i++)
646 if (wildfire_hard_qbb_map[i] == QBB_MAP_EMPTY)
649 printk("%3d ", wildfire_hard_qbb_map[i]);
652 printk(" soft_qbb_map: ");
653 for (i = 0; i < WILDFIRE_MAX_QBB; i++)
654 if (wildfire_soft_qbb_map[i] == QBB_MAP_EMPTY)
657 printk("%3d ", wildfire_soft_qbb_map[i]);
660 #endif /* DUMP_CONFIG */