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28#include <linux/delay.h>
29#include <linux/init.h>
30#include <linux/mm.h>
31#include <linux/module.h>
32#include <linux/seq_file.h>
33#include <linux/slab.h>
34#include <linux/cpu.h>
35#include <asm/param.h>
36#include <asm/cache.h>
37#include <asm/hardware.h>
38#include <asm/processor.h>
39#include <asm/page.h>
40#include <asm/pdc.h>
41#include <asm/pdcpat.h>
42#include <asm/irq.h>
43#include <asm/parisc-device.h>
44
45struct system_cpuinfo_parisc boot_cpu_data __read_mostly;
46EXPORT_SYMBOL(boot_cpu_data);
47#ifdef CONFIG_PA8X00
48int _parisc_requires_coherency __read_mostly;
49EXPORT_SYMBOL(_parisc_requires_coherency);
50#endif
51
52DEFINE_PER_CPU(struct cpuinfo_parisc, cpu_data);
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78static void
79init_percpu_prof(unsigned long cpunum)
80{
81 struct cpuinfo_parisc *p;
82
83 p = &per_cpu(cpu_data, cpunum);
84 p->prof_counter = 1;
85 p->prof_multiplier = 1;
86}
87
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96
97static int processor_probe(struct parisc_device *dev)
98{
99 unsigned long txn_addr;
100 unsigned long cpuid;
101 struct cpuinfo_parisc *p;
102
103#ifdef CONFIG_SMP
104 if (num_online_cpus() >= nr_cpu_ids) {
105 printk(KERN_INFO "num_online_cpus() >= nr_cpu_ids\n");
106 return 1;
107 }
108#else
109 if (boot_cpu_data.cpu_count > 0) {
110 printk(KERN_INFO "CONFIG_SMP=n ignoring additional CPUs\n");
111 return 1;
112 }
113#endif
114
115
116
117
118 cpuid = boot_cpu_data.cpu_count;
119 txn_addr = dev->hpa.start;
120
121#ifdef CONFIG_64BIT
122 if (is_pdc_pat()) {
123 ulong status;
124 unsigned long bytecnt;
125 pdc_pat_cell_mod_maddr_block_t *pa_pdc_cell;
126#undef USE_PAT_CPUID
127#ifdef USE_PAT_CPUID
128 struct pdc_pat_cpu_num cpu_info;
129#endif
130
131 pa_pdc_cell = kmalloc(sizeof (*pa_pdc_cell), GFP_KERNEL);
132 if (!pa_pdc_cell)
133 panic("couldn't allocate memory for PDC_PAT_CELL!");
134
135 status = pdc_pat_cell_module(&bytecnt, dev->pcell_loc,
136 dev->mod_index, PA_VIEW, pa_pdc_cell);
137
138 BUG_ON(PDC_OK != status);
139
140
141 BUG_ON(dev->mod_info != pa_pdc_cell->mod_info);
142 BUG_ON(dev->pmod_loc != pa_pdc_cell->mod_location);
143
144 txn_addr = pa_pdc_cell->mod[0];
145
146 kfree(pa_pdc_cell);
147
148#ifdef USE_PAT_CPUID
149
150
151
152
153
154
155 status = pdc_pat_cpu_get_number(&cpu_info, dev->hpa.start);
156
157 BUG_ON(PDC_OK != status);
158
159 if (cpu_info.cpu_num >= NR_CPUS) {
160 printk(KERN_WARNING "IGNORING CPU at 0x%x,"
161 " cpu_slot_id > NR_CPUS"
162 " (%ld > %d)\n",
163 dev->hpa.start, cpu_info.cpu_num, NR_CPUS);
164
165 boot_cpu_data.cpu_count--;
166 return 1;
167 } else {
168 cpuid = cpu_info.cpu_num;
169 }
170#endif
171 }
172#endif
173
174 p = &per_cpu(cpu_data, cpuid);
175 boot_cpu_data.cpu_count++;
176
177
178 if (cpuid)
179 memset(p, 0, sizeof(struct cpuinfo_parisc));
180
181 p->loops_per_jiffy = loops_per_jiffy;
182 p->dev = dev;
183 p->hpa = dev->hpa.start;
184 p->cpuid = cpuid;
185 p->txn_addr = txn_addr;
186#ifdef CONFIG_SMP
187
188
189
190
191 init_percpu_prof(cpuid);
192#endif
193
194
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197
198
199
200#if 0
201
202 if (cpuid) {
203 struct irqaction actions[];
204
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209 actions = kmalloc(sizeof(struct irqaction)*MAX_CPU_IRQ, GFP_ATOMIC);
210 if (!actions) {
211
212 actions = cpu_irq_actions[0];
213 }
214
215 cpu_irq_actions[cpuid] = actions;
216 }
217#endif
218
219
220
221
222#ifdef CONFIG_SMP
223 if (cpuid) {
224 set_cpu_present(cpuid, true);
225 cpu_up(cpuid);
226 }
227#endif
228
229 return 0;
230}
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237
238void __init collect_boot_cpu_data(void)
239{
240 memset(&boot_cpu_data, 0, sizeof(boot_cpu_data));
241
242 boot_cpu_data.cpu_hz = 100 * PAGE0->mem_10msec;
243
244
245#define p ((unsigned long *)&boot_cpu_data.pdc.model)
246 if (pdc_model_info(&boot_cpu_data.pdc.model) == PDC_OK)
247 printk(KERN_INFO
248 "model %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
249 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8]);
250#undef p
251
252 if (pdc_model_versions(&boot_cpu_data.pdc.versions, 0) == PDC_OK)
253 printk(KERN_INFO "vers %08lx\n",
254 boot_cpu_data.pdc.versions);
255
256 if (pdc_model_cpuid(&boot_cpu_data.pdc.cpuid) == PDC_OK)
257 printk(KERN_INFO "CPUID vers %ld rev %ld (0x%08lx)\n",
258 (boot_cpu_data.pdc.cpuid >> 5) & 127,
259 boot_cpu_data.pdc.cpuid & 31,
260 boot_cpu_data.pdc.cpuid);
261
262 if (pdc_model_capabilities(&boot_cpu_data.pdc.capabilities) == PDC_OK)
263 printk(KERN_INFO "capabilities 0x%lx\n",
264 boot_cpu_data.pdc.capabilities);
265
266 if (pdc_model_sysmodel(boot_cpu_data.pdc.sys_model_name) == PDC_OK)
267 printk(KERN_INFO "model %s\n",
268 boot_cpu_data.pdc.sys_model_name);
269
270 boot_cpu_data.hversion = boot_cpu_data.pdc.model.hversion;
271 boot_cpu_data.sversion = boot_cpu_data.pdc.model.sversion;
272
273 boot_cpu_data.cpu_type = parisc_get_cpu_type(boot_cpu_data.hversion);
274 boot_cpu_data.cpu_name = cpu_name_version[boot_cpu_data.cpu_type][0];
275 boot_cpu_data.family_name = cpu_name_version[boot_cpu_data.cpu_type][1];
276
277#ifdef CONFIG_PA8X00
278 _parisc_requires_coherency = (boot_cpu_data.cpu_type == mako) ||
279 (boot_cpu_data.cpu_type == mako2);
280#endif
281}
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302int init_per_cpu(int cpunum)
303{
304 int ret;
305 struct pdc_coproc_cfg coproc_cfg;
306
307 set_firmware_width();
308 ret = pdc_coproc_cfg(&coproc_cfg);
309
310 if(ret >= 0 && coproc_cfg.ccr_functional) {
311 mtctl(coproc_cfg.ccr_functional, 10);
312
313
314
315
316 per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
317 per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
318
319 if (cpunum == 0)
320 printk(KERN_INFO "FP[%d] enabled: Rev %ld Model %ld\n",
321 cpunum, coproc_cfg.revision, coproc_cfg.model);
322
323
324
325
326
327 asm volatile ("fstd %fr0,8(%sp)");
328
329 } else {
330 printk(KERN_WARNING "WARNING: No FP CoProcessor?!"
331 " (coproc_cfg.ccr_functional == 0x%lx, expected 0xc0)\n"
332#ifdef CONFIG_64BIT
333 "Halting Machine - FP required\n"
334#endif
335 , coproc_cfg.ccr_functional);
336#ifdef CONFIG_64BIT
337 mdelay(100);
338 panic("FP CoProc not reported");
339#endif
340 }
341
342
343 init_percpu_prof(cpunum);
344
345 return ret;
346}
347
348
349
350
351int
352show_cpuinfo (struct seq_file *m, void *v)
353{
354 unsigned long cpu;
355
356 for_each_online_cpu(cpu) {
357 const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
358#ifdef CONFIG_SMP
359 if (0 == cpuinfo->hpa)
360 continue;
361#endif
362 seq_printf(m, "processor\t: %lu\n"
363 "cpu family\t: PA-RISC %s\n",
364 cpu, boot_cpu_data.family_name);
365
366 seq_printf(m, "cpu\t\t: %s\n", boot_cpu_data.cpu_name );
367
368
369 seq_printf(m, "cpu MHz\t\t: %d.%06d\n",
370 boot_cpu_data.cpu_hz / 1000000,
371 boot_cpu_data.cpu_hz % 1000000 );
372
373 seq_printf(m, "capabilities\t:");
374 if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS32)
375 seq_puts(m, " os32");
376 if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS64)
377 seq_puts(m, " os64");
378 if (boot_cpu_data.pdc.capabilities & PDC_MODEL_IOPDIR_FDC)
379 seq_puts(m, " iopdir_fdc");
380 switch (boot_cpu_data.pdc.capabilities & PDC_MODEL_NVA_MASK) {
381 case PDC_MODEL_NVA_SUPPORTED:
382 seq_puts(m, " nva_supported");
383 break;
384 case PDC_MODEL_NVA_SLOW:
385 seq_puts(m, " nva_slow");
386 break;
387 case PDC_MODEL_NVA_UNSUPPORTED:
388 seq_puts(m, " needs_equivalent_aliasing");
389 break;
390 }
391 seq_printf(m, " (0x%02lx)\n", boot_cpu_data.pdc.capabilities);
392
393 seq_printf(m, "model\t\t: %s\n"
394 "model name\t: %s\n",
395 boot_cpu_data.pdc.sys_model_name,
396 cpuinfo->dev ?
397 cpuinfo->dev->name : "Unknown");
398
399 seq_printf(m, "hversion\t: 0x%08x\n"
400 "sversion\t: 0x%08x\n",
401 boot_cpu_data.hversion,
402 boot_cpu_data.sversion );
403
404
405 show_cache_info(m);
406
407 seq_printf(m, "bogomips\t: %lu.%02lu\n",
408 cpuinfo->loops_per_jiffy / (500000 / HZ),
409 (cpuinfo->loops_per_jiffy / (5000 / HZ)) % 100);
410
411 seq_printf(m, "software id\t: %ld\n\n",
412 boot_cpu_data.pdc.model.sw_id);
413 }
414 return 0;
415}
416
417static const struct parisc_device_id processor_tbl[] = {
418 { HPHW_NPROC, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, SVERSION_ANY_ID },
419 { 0, }
420};
421
422static struct parisc_driver cpu_driver = {
423 .name = "CPU",
424 .id_table = processor_tbl,
425 .probe = processor_probe
426};
427
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430
431
432
433void __init processor_init(void)
434{
435 register_parisc_driver(&cpu_driver);
436}
437