[linux-2.6-block.git] / arch / parisc / kernel / processor.c

/*    $Id: processor.c,v 1.1 2002/07/20 16:27:06 rhirst Exp $
 *
 *    Initial setup-routines for HP 9000 based hardware.
 *
 *    Copyright (C) 1991, 1992, 1995  Linus Torvalds
 *    Modifications for PA-RISC (C) 1999-2008 Helge Deller <deller@gmx.de>
 *    Modifications copyright 1999 SuSE GmbH (Philipp Rumpf)
 *    Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net>
 *    Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org>
 *    Modifications copyright 2001 Ryan Bradetich <rbradetich@uswest.net>
 *
 *    Initial PA-RISC Version: 04-23-1999 by Helge Deller
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2, or (at your option)
 *    any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/cpu.h>
#include <asm/param.h>
#include <asm/cache.h>
#include <asm/hardware.h>	/* for register_parisc_driver() stuff */
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/pdc.h>
#include <asm/pdcpat.h>
#include <asm/irq.h>		/* for struct irq_region */
#include <asm/parisc-device.h>

struct system_cpuinfo_parisc boot_cpu_data __read_mostly;
EXPORT_SYMBOL(boot_cpu_data);

DEFINE_PER_CPU(struct cpuinfo_parisc, cpu_data);

extern int update_cr16_clocksource(void);	/* from time.c */

/*
**  	PARISC CPU driver - claim "device" and initialize CPU data structures.
**
** Consolidate per CPU initialization into (mostly) one module.
** Monarch CPU will initialize boot_cpu_data which shouldn't
** change once the system has booted.
**
** The callback *should* do per-instance initialization of
** everything including the monarch. "Per CPU" init code in
** setup.c:start_parisc() has migrated here and start_parisc()
** will call register_parisc_driver(&cpu_driver) before calling do_inventory().
**
** The goal of consolidating CPU initialization into one place is
** to make sure all CPUs get initialized the same way.
** The code path not shared is how PDC hands control of the CPU to the OS.
** The initialization of OS data structures is the same (done below).
*/

/**
 * init_cpu_profiler - enable/setup per cpu profiling hooks.
 * @cpunum: The processor instance.
 *
 * FIXME: doesn't do much yet...
 */
static void __cpuinit
init_percpu_prof(unsigned long cpunum)
{
	struct cpuinfo_parisc *p;

	p = &per_cpu(cpu_data, cpunum);
	p->prof_counter = 1;
	p->prof_multiplier = 1;
}


/**
 * processor_probe - Determine if processor driver should claim this device.
 * @dev: The device which has been found.
 *
 * Determine if processor driver should claim this chip (return 0) or not 
 * (return 1).  If so, initialize the chip and tell other partners in crime 
 * they have work to do.
 */
static int __cpuinit processor_probe(struct parisc_device *dev)
{
	unsigned long txn_addr;
	unsigned long cpuid;
	struct cpuinfo_parisc *p;

#ifdef CONFIG_SMP
	if (num_online_cpus() >= nr_cpu_ids) {
		printk(KERN_INFO "num_online_cpus() >= nr_cpu_ids\n");
		return 1;
	}
#else
	if (boot_cpu_data.cpu_count > 0) {
		printk(KERN_INFO "CONFIG_SMP=n  ignoring additional CPUs\n");
		return 1;
	}
#endif

	/* logical CPU ID and update global counter
	 * May get overwritten by PAT code.
	 */
	cpuid = boot_cpu_data.cpu_count;
	txn_addr = dev->hpa.start;	/* for legacy PDC */

#ifdef CONFIG_64BIT
	if (is_pdc_pat()) {
		ulong status;
		unsigned long bytecnt;
	        pdc_pat_cell_mod_maddr_block_t pa_pdc_cell;
#undef USE_PAT_CPUID
#ifdef USE_PAT_CPUID
		struct pdc_pat_cpu_num cpu_info;
#endif

		status = pdc_pat_cell_module(&bytecnt, dev->pcell_loc,
			dev->mod_index, PA_VIEW, &pa_pdc_cell);

		BUG_ON(PDC_OK != status);

		/* verify it's the same as what do_pat_inventory() found */
		BUG_ON(dev->mod_info != pa_pdc_cell.mod_info);
		BUG_ON(dev->pmod_loc != pa_pdc_cell.mod_location);

		txn_addr = pa_pdc_cell.mod[0];   /* id_eid for IO sapic */

#ifdef USE_PAT_CPUID
/* We need contiguous numbers for cpuid. Firmware's notion
 * of cpuid is for physical CPUs and we just don't care yet.
 * We'll care when we need to query PAT PDC about a CPU *after*
 * boot time (ie shutdown a CPU from an OS perspective).
 */
		/* get the cpu number */
		status = pdc_pat_cpu_get_number(&cpu_info, dev->hpa.start);

		BUG_ON(PDC_OK != status);

		if (cpu_info.cpu_num >= NR_CPUS) {
			printk(KERN_WARNING "IGNORING CPU at 0x%x,"
				" cpu_slot_id > NR_CPUS"
				" (%ld > %d)\n",
				dev->hpa.start, cpu_info.cpu_num, NR_CPUS);
			/* Ignore CPU since it will only crash */
			boot_cpu_data.cpu_count--;
			return 1;
		} else {
			cpuid = cpu_info.cpu_num;
		}
#endif
	}
#endif

	p = &per_cpu(cpu_data, cpuid);
	boot_cpu_data.cpu_count++;

	/* initialize counters - CPU 0 gets it_value set in time_init() */
	if (cpuid)
		memset(p, 0, sizeof(struct cpuinfo_parisc));

	p->loops_per_jiffy = loops_per_jiffy;
	p->dev = dev;		/* Save IODC data in case we need it */
	p->hpa = dev->hpa.start;	/* save CPU hpa */
	p->cpuid = cpuid;	/* save CPU id */
	p->txn_addr = txn_addr;	/* save CPU IRQ address */
#ifdef CONFIG_SMP
	/*
	** FIXME: review if any other initialization is clobbered
	**	  for boot_cpu by the above memset().
	*/
	init_percpu_prof(cpuid);
#endif

	/*
	** CONFIG_SMP: init_smp_config() will attempt to get CPUs into
	** OS control. RENDEZVOUS is the default state - see mem_set above.
	**	p->state = STATE_RENDEZVOUS;
	*/

#if 0
	/* CPU 0 IRQ table is statically allocated/initialized */
	if (cpuid) {
		struct irqaction actions[];

		/*
		** itimer and ipi IRQ handlers are statically initialized in
		** arch/parisc/kernel/irq.c. ie Don't need to register them.
		*/
		actions = kmalloc(sizeof(struct irqaction)*MAX_CPU_IRQ, GFP_ATOMIC);
		if (!actions) {
			/* not getting it's own table, share with monarch */
			actions = cpu_irq_actions[0];
		}

		cpu_irq_actions[cpuid] = actions;
	}
#endif

	/* 
	 * Bring this CPU up now! (ignore bootstrap cpuid == 0)
	 */
#ifdef CONFIG_SMP
	if (cpuid) {
		set_cpu_present(cpuid, true);
		cpu_up(cpuid);
	}
#endif

	/* If we've registered more than one cpu,
	 * we'll use the jiffies clocksource since cr16
	 * is not synchronized between CPUs.
	 */
	update_cr16_clocksource();

	return 0;
}

/**
 * collect_boot_cpu_data - Fill the boot_cpu_data structure.
 *
 * This function collects and stores the generic processor information
 * in the boot_cpu_data structure.
 */
void __init collect_boot_cpu_data(void)
{
	memset(&boot_cpu_data, 0, sizeof(boot_cpu_data));

	boot_cpu_data.cpu_hz = 100 * PAGE0->mem_10msec; /* Hz of this PARISC */

	/* get CPU-Model Information... */
#define p ((unsigned long *)&boot_cpu_data.pdc.model)
	if (pdc_model_info(&boot_cpu_data.pdc.model) == PDC_OK)
		printk(KERN_INFO 
			"model %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
			p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8]);
#undef p

	if (pdc_model_versions(&boot_cpu_data.pdc.versions, 0) == PDC_OK)
		printk(KERN_INFO "vers  %08lx\n", 
			boot_cpu_data.pdc.versions);

	if (pdc_model_cpuid(&boot_cpu_data.pdc.cpuid) == PDC_OK)
		printk(KERN_INFO "CPUID vers %ld rev %ld (0x%08lx)\n",
			(boot_cpu_data.pdc.cpuid >> 5) & 127,
			boot_cpu_data.pdc.cpuid & 31,
			boot_cpu_data.pdc.cpuid);

	if (pdc_model_capabilities(&boot_cpu_data.pdc.capabilities) == PDC_OK)
		printk(KERN_INFO "capabilities 0x%lx\n",
			boot_cpu_data.pdc.capabilities);

	if (pdc_model_sysmodel(boot_cpu_data.pdc.sys_model_name) == PDC_OK)
		printk(KERN_INFO "model %s\n",
			boot_cpu_data.pdc.sys_model_name);

	boot_cpu_data.hversion =  boot_cpu_data.pdc.model.hversion;
	boot_cpu_data.sversion =  boot_cpu_data.pdc.model.sversion;

	boot_cpu_data.cpu_type = parisc_get_cpu_type(boot_cpu_data.hversion);
	boot_cpu_data.cpu_name = cpu_name_version[boot_cpu_data.cpu_type][0];
	boot_cpu_data.family_name = cpu_name_version[boot_cpu_data.cpu_type][1];
}


/**
 * init_per_cpu - Handle individual processor initializations.
 * @cpunum: logical processor number.
 *
 * This function handles initialization for *every* CPU
 * in the system:
 *
 * o Set "default" CPU width for trap handlers
 *
 * o Enable FP coprocessor
 *   REVISIT: this could be done in the "code 22" trap handler.
 *	(frowands idea - that way we know which processes need FP
 *	registers saved on the interrupt stack.)
 *   NEWS FLASH: wide kernels need FP coprocessor enabled to handle
 *	formatted printing of %lx for example (double divides I think)
 *
 * o Enable CPU profiling hooks.
 */
int __cpuinit init_per_cpu(int cpunum)
{
	int ret;
	struct pdc_coproc_cfg coproc_cfg;

	set_firmware_width();
	ret = pdc_coproc_cfg(&coproc_cfg);

	if(ret >= 0 && coproc_cfg.ccr_functional) {
		mtctl(coproc_cfg.ccr_functional, 10);  /* 10 == Coprocessor Control Reg */

		/* FWIW, FP rev/model is a more accurate way to determine
		** CPU type. CPU rev/model has some ambiguous cases.
		*/
		per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
		per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;

		printk(KERN_INFO  "FP[%d] enabled: Rev %ld Model %ld\n",
			cpunum, coproc_cfg.revision, coproc_cfg.model);

		/*
		** store status register to stack (hopefully aligned)
		** and clear the T-bit.
		*/
		asm volatile ("fstd    %fr0,8(%sp)");

	} else {
		printk(KERN_WARNING  "WARNING: No FP CoProcessor?!"
			" (coproc_cfg.ccr_functional == 0x%lx, expected 0xc0)\n"
#ifdef CONFIG_64BIT
			"Halting Machine - FP required\n"
#endif
			, coproc_cfg.ccr_functional);
#ifdef CONFIG_64BIT
		mdelay(100);	/* previous chars get pushed to console */
		panic("FP CoProc not reported");
#endif
	}

	/* FUTURE: Enable Performance Monitor : ccr bit 0x20 */
	init_percpu_prof(cpunum);

	return ret;
}

/*
 * Display CPU info for all CPUs.
 */
int
show_cpuinfo (struct seq_file *m, void *v)
{
	unsigned long cpu;

	for_each_online_cpu(cpu) {
		const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
#ifdef CONFIG_SMP
		if (0 == cpuinfo->hpa)
			continue;
#endif
		seq_printf(m, "processor\t: %lu\n"
				"cpu family\t: PA-RISC %s\n",
				 cpu, boot_cpu_data.family_name);

		seq_printf(m, "cpu\t\t: %s\n",  boot_cpu_data.cpu_name );

		/* cpu MHz */
		seq_printf(m, "cpu MHz\t\t: %d.%06d\n",
				 boot_cpu_data.cpu_hz / 1000000,
				 boot_cpu_data.cpu_hz % 1000000  );

		seq_printf(m, "capabilities\t:");
		if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS32)
			seq_printf(m, " os32");
		if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS64)
			seq_printf(m, " os64");
		seq_printf(m, "\n");

		seq_printf(m, "model\t\t: %s\n"
				"model name\t: %s\n",
				 boot_cpu_data.pdc.sys_model_name,
				 cpuinfo->dev ?
				 cpuinfo->dev->name : "Unknown");

		seq_printf(m, "hversion\t: 0x%08x\n"
			        "sversion\t: 0x%08x\n",
				 boot_cpu_data.hversion,
				 boot_cpu_data.sversion );

		/* print cachesize info */
		show_cache_info(m);

		seq_printf(m, "bogomips\t: %lu.%02lu\n",
			     cpuinfo->loops_per_jiffy / (500000 / HZ),
			     (cpuinfo->loops_per_jiffy / (5000 / HZ)) % 100);

		seq_printf(m, "software id\t: %ld\n\n",
				boot_cpu_data.pdc.model.sw_id);
	}
	return 0;
}

static const struct parisc_device_id processor_tbl[] = {
	{ HPHW_NPROC, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, SVERSION_ANY_ID },
	{ 0, }
};

static struct parisc_driver cpu_driver = {
	.name		= "CPU",
	.id_table	= processor_tbl,
	.probe		= processor_probe
};

/**
 * processor_init - Processor initialization procedure.
 *
 * Register this driver.
 */
void __init processor_init(void)
{
	register_parisc_driver(&cpu_driver);
}
Commit	Line	Data
1da177e4 LT	1	/* $Id: processor.c,v 1.1 2002/07/20 16:27:06 rhirst Exp $
	2	*
	3	* Initial setup-routines for HP 9000 based hardware.
	4	*
	5	* Copyright (C) 1991, 1992, 1995 Linus Torvalds
ef017beb	6	* Modifications for PA-RISC (C) 1999-2008 Helge Deller <deller@gmx.de>
1da177e4 LT	7	* Modifications copyright 1999 SuSE GmbH (Philipp Rumpf)
	8	* Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net>
	9	* Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org>
	10	* Modifications copyright 2001 Ryan Bradetich <rbradetich@uswest.net>
	11	*
	12	* Initial PA-RISC Version: 04-23-1999 by Helge Deller
	13	*
	14	* This program is free software; you can redistribute it and/or modify
	15	* it under the terms of the GNU General Public License as published by
	16	* the Free Software Foundation; either version 2, or (at your option)
	17	* any later version.
	18	*
	19	* This program is distributed in the hope that it will be useful,
	20	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	22	* GNU General Public License for more details.
	23	*
	24	* You should have received a copy of the GNU General Public License
	25	* along with this program; if not, write to the Free Software
	26	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	27	*
	28	*/
1da177e4 LT	29	#include <linux/delay.h>
	30	#include <linux/init.h>
	31	#include <linux/mm.h>
	32	#include <linux/module.h>
	33	#include <linux/seq_file.h>
	34	#include <linux/slab.h>
	35	#include <linux/cpu.h>
e8edc6e0	36	#include <asm/param.h>
1da177e4 LT	37	#include <asm/cache.h>
	38	#include <asm/hardware.h> /* for register_parisc_driver() stuff */
	39	#include <asm/processor.h>
	40	#include <asm/page.h>
	41	#include <asm/pdc.h>
	42	#include <asm/pdcpat.h>
	43	#include <asm/irq.h> /* for struct irq_region */
	44	#include <asm/parisc-device.h>
	45
8039de10	46	struct system_cpuinfo_parisc boot_cpu_data __read_mostly;
1da177e4 LT	47	EXPORT_SYMBOL(boot_cpu_data);
1da177e4 LT	48
ef017beb	49	DEFINE_PER_CPU(struct cpuinfo_parisc, cpu_data);
1da177e4	50
01363220 KM	51	extern int update_cr16_clocksource(void); /* from time.c */
01363220 KM	52
1da177e4 LT	53	/*
	54	** PARISC CPU driver - claim "device" and initialize CPU data structures.
	55	**
	56	** Consolidate per CPU initialization into (mostly) one module.
	57	** Monarch CPU will initialize boot_cpu_data which shouldn't
	58	** change once the system has booted.
	59	**
	60	** The callback should do per-instance initialization of
	61	** everything including the monarch. "Per CPU" init code in
	62	** setup.c:start_parisc() has migrated here and start_parisc()
	63	** will call register_parisc_driver(&cpu_driver) before calling do_inventory().
	64	**
	65	** The goal of consolidating CPU initialization into one place is
7022672e	66	** to make sure all CPUs get initialized the same way.
1da177e4 LT	67	** The code path not shared is how PDC hands control of the CPU to the OS.
	68	** The initialization of OS data structures is the same (done below).
	69	*/
	70
ef017beb HD	71	/**
	72	* init_cpu_profiler - enable/setup per cpu profiling hooks.
	73	* @cpunum: The processor instance.
	74	*
	75	* FIXME: doesn't do much yet...
	76	*/
	77	static void __cpuinit
	78	init_percpu_prof(unsigned long cpunum)
	79	{
	80	struct cpuinfo_parisc *p;
	81
	82	p = &per_cpu(cpu_data, cpunum);
	83	p->prof_counter = 1;
	84	p->prof_multiplier = 1;
	85	}
	86
	87
1da177e4 LT	88	/**
	89	* processor_probe - Determine if processor driver should claim this device.
	90	* @dev: The device which has been found.
	91	*
	92	* Determine if processor driver should claim this chip (return 0) or not
	93	* (return 1). If so, initialize the chip and tell other partners in crime
	94	* they have work to do.
	95	*/
e9541d0c	96	static int __cpuinit processor_probe(struct parisc_device *dev)
1da177e4 LT	97	{
	98	unsigned long txn_addr;
	99	unsigned long cpuid;
	100	struct cpuinfo_parisc *p;
	101
f8b9e594	102	#ifdef CONFIG_SMP
bd071e1a RR	103	if (num_online_cpus() >= nr_cpu_ids) {
bd071e1a RR	104	printk(KERN_INFO "num_online_cpus() >= nr_cpu_ids\n");
f8b9e594 KM	105	return 1;
	106	}
	107	#else
1da177e4 LT	108	if (boot_cpu_data.cpu_count > 0) {
	109	printk(KERN_INFO "CONFIG_SMP=n ignoring additional CPUs\n");
	110	return 1;
	111	}
	112	#endif
	113
	114	/* logical CPU ID and update global counter
	115	* May get overwritten by PAT code.
	116	*/
	117	cpuid = boot_cpu_data.cpu_count;
53f01bba	118	txn_addr = dev->hpa.start; /* for legacy PDC */
1da177e4	119
a8f44e38	120	#ifdef CONFIG_64BIT
1da177e4 LT	121	if (is_pdc_pat()) {
	122	ulong status;
	123	unsigned long bytecnt;
	124	pdc_pat_cell_mod_maddr_block_t pa_pdc_cell;
	125	#undef USE_PAT_CPUID
	126	#ifdef USE_PAT_CPUID
	127	struct pdc_pat_cpu_num cpu_info;
	128	#endif
	129
	130	status = pdc_pat_cell_module(&bytecnt, dev->pcell_loc,
	131	dev->mod_index, PA_VIEW, &pa_pdc_cell);
	132
	133	BUG_ON(PDC_OK != status);
	134
	135	/* verify it's the same as what do_pat_inventory() found */
	136	BUG_ON(dev->mod_info != pa_pdc_cell.mod_info);
	137	BUG_ON(dev->pmod_loc != pa_pdc_cell.mod_location);
	138
	139	txn_addr = pa_pdc_cell.mod[0]; /* id_eid for IO sapic */
	140
	141	#ifdef USE_PAT_CPUID
	142	/* We need contiguous numbers for cpuid. Firmware's notion
	143	* of cpuid is for physical CPUs and we just don't care yet.
	144	* We'll care when we need to query PAT PDC about a CPU after
	145	* boot time (ie shutdown a CPU from an OS perspective).
	146	*/
	147	/* get the cpu number */
53f01bba	148	status = pdc_pat_cpu_get_number(&cpu_info, dev->hpa.start);
1da177e4 LT	149
	150	BUG_ON(PDC_OK != status);
	151
	152	if (cpu_info.cpu_num >= NR_CPUS) {
	153	printk(KERN_WARNING "IGNORING CPU at 0x%x,"
	154	" cpu_slot_id > NR_CPUS"
	155	" (%ld > %d)\n",
53f01bba	156	dev->hpa.start, cpu_info.cpu_num, NR_CPUS);
1da177e4 LT	157	/* Ignore CPU since it will only crash */
	158	boot_cpu_data.cpu_count--;
	159	return 1;
	160	} else {
	161	cpuid = cpu_info.cpu_num;
	162	}
	163	#endif
	164	}
	165	#endif
	166
ef017beb	167	p = &per_cpu(cpu_data, cpuid);
1da177e4 LT	168	boot_cpu_data.cpu_count++;
1da177e4 LT	169
7908a0c7 GG	170	/* initialize counters - CPU 0 gets it_value set in time_init() */
	171	if (cpuid)
	172	memset(p, 0, sizeof(struct cpuinfo_parisc));
1da177e4 LT	173
	174	p->loops_per_jiffy = loops_per_jiffy;
	175	p->dev = dev; /* Save IODC data in case we need it */
53f01bba	176	p->hpa = dev->hpa.start; /* save CPU hpa */
1da177e4 LT	177	p->cpuid = cpuid; /* save CPU id */
	178	p->txn_addr = txn_addr; /* save CPU IRQ address */
	179	#ifdef CONFIG_SMP
1da177e4 LT	180	/*
1da177e4 LT	181	** FIXME: review if any other initialization is clobbered
ef017beb	182	** for boot_cpu by the above memset().
1da177e4	183	*/
ef017beb	184	init_percpu_prof(cpuid);
1da177e4 LT	185	#endif
	186
	187	/*
7022672e	188	** CONFIG_SMP: init_smp_config() will attempt to get CPUs into
1da177e4 LT	189	** OS control. RENDEZVOUS is the default state - see mem_set above.
	190	** p->state = STATE_RENDEZVOUS;
	191	*/
	192
	193	#if 0
	194	/* CPU 0 IRQ table is statically allocated/initialized */
	195	if (cpuid) {
	196	struct irqaction actions[];
	197
	198	/*
	199	** itimer and ipi IRQ handlers are statically initialized in
	200	** arch/parisc/kernel/irq.c. ie Don't need to register them.
	201	*/
	202	actions = kmalloc(sizeof(struct irqaction)*MAX_CPU_IRQ, GFP_ATOMIC);
	203	if (!actions) {
	204	/* not getting it's own table, share with monarch */
	205	actions = cpu_irq_actions[0];
	206	}
	207
	208	cpu_irq_actions[cpuid] = actions;
	209	}
	210	#endif
	211
	212	/*
	213	* Bring this CPU up now! (ignore bootstrap cpuid == 0)
	214	*/
	215	#ifdef CONFIG_SMP
	216	if (cpuid) {
9bc181d8	217	set_cpu_present(cpuid, true);
1da177e4 LT	218	cpu_up(cpuid);
	219	}
	220	#endif
	221
01363220 KM	222	/* If we've registered more than one cpu,
	223	* we'll use the jiffies clocksource since cr16
	224	* is not synchronized between CPUs.
	225	*/
	226	update_cr16_clocksource();
	227
1da177e4 LT	228	return 0;
	229	}
	230
	231	/**
	232	* collect_boot_cpu_data - Fill the boot_cpu_data structure.
	233	*
	234	* This function collects and stores the generic processor information
	235	* in the boot_cpu_data structure.
	236	*/
	237	void __init collect_boot_cpu_data(void)
	238	{
	239	memset(&boot_cpu_data, 0, sizeof(boot_cpu_data));
	240
	241	boot_cpu_data.cpu_hz = 100 * PAGE0->mem_10msec; /* Hz of this PARISC */
	242
	243	/* get CPU-Model Information... */
	244	#define p ((unsigned long *)&boot_cpu_data.pdc.model)
	245	if (pdc_model_info(&boot_cpu_data.pdc.model) == PDC_OK)
	246	printk(KERN_INFO
	247	"model %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
	248	p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8]);
	249	#undef p
	250
	251	if (pdc_model_versions(&boot_cpu_data.pdc.versions, 0) == PDC_OK)
	252	printk(KERN_INFO "vers %08lx\n",
	253	boot_cpu_data.pdc.versions);
	254
	255	if (pdc_model_cpuid(&boot_cpu_data.pdc.cpuid) == PDC_OK)
	256	printk(KERN_INFO "CPUID vers %ld rev %ld (0x%08lx)\n",
	257	(boot_cpu_data.pdc.cpuid >> 5) & 127,
	258	boot_cpu_data.pdc.cpuid & 31,
	259	boot_cpu_data.pdc.cpuid);
	260
	261	if (pdc_model_capabilities(&boot_cpu_data.pdc.capabilities) == PDC_OK)
	262	printk(KERN_INFO "capabilities 0x%lx\n",
	263	boot_cpu_data.pdc.capabilities);
	264
	265	if (pdc_model_sysmodel(boot_cpu_data.pdc.sys_model_name) == PDC_OK)
	266	printk(KERN_INFO "model %s\n",
	267	boot_cpu_data.pdc.sys_model_name);
	268
	269	boot_cpu_data.hversion = boot_cpu_data.pdc.model.hversion;
	270	boot_cpu_data.sversion = boot_cpu_data.pdc.model.sversion;
	271
	272	boot_cpu_data.cpu_type = parisc_get_cpu_type(boot_cpu_data.hversion);
	273	boot_cpu_data.cpu_name = cpu_name_version[boot_cpu_data.cpu_type][0];
	274	boot_cpu_data.family_name = cpu_name_version[boot_cpu_data.cpu_type][1];
	275	}
	276
	277
1da177e4 LT	278
	279	/**
	280	* init_per_cpu - Handle individual processor initializations.
	281	* @cpunum: logical processor number.
	282	*
	283	* This function handles initialization for every CPU
	284	* in the system:
	285	*
	286	* o Set "default" CPU width for trap handlers
	287	*
	288	* o Enable FP coprocessor
	289	* REVISIT: this could be done in the "code 22" trap handler.
	290	* (frowands idea - that way we know which processes need FP
	291	* registers saved on the interrupt stack.)
	292	* NEWS FLASH: wide kernels need FP coprocessor enabled to handle
	293	* formatted printing of %lx for example (double divides I think)
	294	*
	295	* o Enable CPU profiling hooks.
	296	*/
ef017beb	297	int __cpuinit init_per_cpu(int cpunum)
1da177e4 LT	298	{
	299	int ret;
	300	struct pdc_coproc_cfg coproc_cfg;
	301
	302	set_firmware_width();
	303	ret = pdc_coproc_cfg(&coproc_cfg);
	304
	305	if(ret >= 0 && coproc_cfg.ccr_functional) {
	306	mtctl(coproc_cfg.ccr_functional, 10); /* 10 == Coprocessor Control Reg */
	307
	308	/* FWIW, FP rev/model is a more accurate way to determine
	309	** CPU type. CPU rev/model has some ambiguous cases.
	310	*/
ef017beb HD	311	per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
ef017beb HD	312	per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
1da177e4 LT	313
	314	printk(KERN_INFO "FP[%d] enabled: Rev %ld Model %ld\n",
	315	cpunum, coproc_cfg.revision, coproc_cfg.model);
	316
	317	/*
	318	** store status register to stack (hopefully aligned)
	319	** and clear the T-bit.
	320	*/
	321	asm volatile ("fstd %fr0,8(%sp)");
	322
	323	} else {
	324	printk(KERN_WARNING "WARNING: No FP CoProcessor?!"
	325	" (coproc_cfg.ccr_functional == 0x%lx, expected 0xc0)\n"
a8f44e38	326	#ifdef CONFIG_64BIT
1da177e4 LT	327	"Halting Machine - FP required\n"
	328	#endif
	329	, coproc_cfg.ccr_functional);
a8f44e38	330	#ifdef CONFIG_64BIT
1da177e4 LT	331	mdelay(100); /* previous chars get pushed to console */
	332	panic("FP CoProc not reported");
	333	#endif
	334	}
	335
	336	/* FUTURE: Enable Performance Monitor : ccr bit 0x20 */
	337	init_percpu_prof(cpunum);
	338
	339	return ret;
	340	}
	341
	342	/*
7022672e	343	* Display CPU info for all CPUs.
1da177e4 LT	344	*/
	345	int
	346	show_cpuinfo (struct seq_file m, void v)
	347	{
ef017beb	348	unsigned long cpu;
1da177e4	349
ef017beb HD	350	for_each_online_cpu(cpu) {
ef017beb HD	351	const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
1da177e4	352	#ifdef CONFIG_SMP
ef017beb	353	if (0 == cpuinfo->hpa)
1da177e4	354	continue;
1da177e4	355	#endif
ef017beb	356	seq_printf(m, "processor\t: %lu\n"
1da177e4	357	"cpu family\t: PA-RISC %s\n",
ef017beb	358	cpu, boot_cpu_data.family_name);
1da177e4 LT	359
	360	seq_printf(m, "cpu\t\t: %s\n", boot_cpu_data.cpu_name );
	361
	362	/* cpu MHz */
	363	seq_printf(m, "cpu MHz\t\t: %d.%06d\n",
	364	boot_cpu_data.cpu_hz / 1000000,
	365	boot_cpu_data.cpu_hz % 1000000 );
	366
445c088f CW	367	seq_printf(m, "capabilities\t:");
	368	if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS32)
	369	seq_printf(m, " os32");
	370	if (boot_cpu_data.pdc.capabilities & PDC_MODEL_OS64)
	371	seq_printf(m, " os64");
	372	seq_printf(m, "\n");
	373
1da177e4 LT	374	seq_printf(m, "model\t\t: %s\n"
	375	"model name\t: %s\n",
	376	boot_cpu_data.pdc.sys_model_name,
ef017beb HD	377	cpuinfo->dev ?
ef017beb HD	378	cpuinfo->dev->name : "Unknown");
1da177e4 LT	379
	380	seq_printf(m, "hversion\t: 0x%08x\n"
	381	"sversion\t: 0x%08x\n",
	382	boot_cpu_data.hversion,
	383	boot_cpu_data.sversion );
	384
	385	/* print cachesize info */
	386	show_cache_info(m);
	387
	388	seq_printf(m, "bogomips\t: %lu.%02lu\n",
ef017beb HD	389	cpuinfo->loops_per_jiffy / (500000 / HZ),
ef017beb HD	390	(cpuinfo->loops_per_jiffy / (5000 / HZ)) % 100);
1da177e4 LT	391
	392	seq_printf(m, "software id\t: %ld\n\n",
	393	boot_cpu_data.pdc.model.sw_id);
	394	}
	395	return 0;
	396	}
	397
e9541d0c	398	static const struct parisc_device_id processor_tbl[] = {
1da177e4 LT	399	{ HPHW_NPROC, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, SVERSION_ANY_ID },
	400	{ 0, }
	401	};
	402
e9541d0c	403	static struct parisc_driver cpu_driver = {
1da177e4 LT	404	.name = "CPU",
	405	.id_table = processor_tbl,
	406	.probe = processor_probe
	407	};
	408
	409	/**
7022672e	410	* processor_init - Processor initialization procedure.
1da177e4 LT	411	*
	412	* Register this driver.
	413	*/
	414	void __init processor_init(void)
	415	{
	416	register_parisc_driver(&cpu_driver);
	417	}