/*	$NetBSD: cpu.c,v 1.9 2004/12/13 02:14:13 chs Exp $	*/

/*	$OpenBSD: cpu.c,v 1.8 2000/08/15 20:38:24 mickey Exp $	*/

/*
 * Copyright (c) 1998,1999 Michael Shalayeff
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Michael Shalayeff.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF MIND,
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.9 2004/12/13 02:14:13 chs Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/reboot.h>

#include <machine/cpufunc.h>
#include <machine/pdc.h>
#include <machine/iomod.h>
#include <machine/autoconf.h>

#include <hp700/hp700/intr.h>
#include <hp700/hp700/machdep.h>
#include <hp700/dev/cpudevs.h>

struct cpu_softc {
	struct  device sc_dev;

	hppa_hpa_t sc_hpa;
	void *sc_ih;
};

int	cpumatch(struct device *, struct cfdata *, void *);
void	cpuattach(struct device *, struct device *, void *);

CFATTACH_DECL(cpu, sizeof(struct cpu_softc),
    cpumatch, cpuattach, NULL, NULL);

static int cpu_attached;

int
cpumatch(struct device *parent, struct cfdata *cf, void *aux)
{
	struct confargs *ca = aux;

	/* there will be only one for now XXX */
	/* probe any 1.0, 1.1 or 2.0 */
	if (cpu_attached ||
	    ca->ca_type.iodc_type != HPPA_TYPE_NPROC ||
	    ca->ca_type.iodc_sv_model != HPPA_NPROC_HPPA)
		return 0;

	return 1;
}

void
cpuattach(struct device *parent, struct device *self, void *aux)
{
	/* machdep.c */
	extern struct pdc_cache pdc_cache;
	extern struct pdc_btlb pdc_btlb;
	extern struct pdc_model pdc_model;
	extern u_int cpu_ticksnum, cpu_ticksdenom;

	struct cpu_softc *sc = (struct cpu_softc *)self;
	struct confargs *ca = aux;
	char c;
	const char lvls[4][4] = { "0", "1", "1.5", "2" };
	u_int mhz = 100 * cpu_ticksnum / cpu_ticksdenom;

	cpu_attached = 1;

	/* Print the CPU chip name, nickname, and rev. */
	printf(": %s", hppa_cpu_info->hppa_cpu_info_chip_name);
	if (hppa_cpu_info->hppa_cpu_info_chip_nickname != NULL)
		printf(" (%s)", hppa_cpu_info->hppa_cpu_info_chip_nickname);
	printf(" rev %d", (*hppa_cpu_info->desidhash)());

	/* Print the CPU type, spec, level, category, and speed. */
	printf("\n%s: %s, PA-RISC %d.%d",
		self->dv_xname,
		hppa_cpu_info->hppa_cpu_info_chip_type,
		HPPA_PA_SPEC_MAJOR(hppa_cpu_info->hppa_cpu_info_pa_spec),
		HPPA_PA_SPEC_MINOR(hppa_cpu_info->hppa_cpu_info_pa_spec));
	c = HPPA_PA_SPEC_LETTER(hppa_cpu_info->hppa_cpu_info_pa_spec);
	if (c != '\0') printf("%c", c);
	printf(", lev %s, cat %c, ",
		lvls[pdc_model.pa_lvl], "AB"[pdc_model.mc]);

	printf ("%d", mhz / 100);
	if (mhz % 100 > 9)
		printf(".%02d", mhz % 100);

	printf(" MHz clk\n%s: %s", self->dv_xname,
	       pdc_model.sh? "shadows, ": "");

	if (pdc_cache.dc_conf.cc_sh)
		printf("%uK cache", pdc_cache.dc_size / 1024);
	else
		printf("%uK/%uK D/I caches",
		       pdc_cache.dc_size / 1024,
		       pdc_cache.ic_size / 1024);
	if (pdc_cache.dt_conf.tc_sh)
		printf(", %u shared TLB", pdc_cache.dt_size);
	else
		printf(", %u/%u D/I TLBs",
		       pdc_cache.dt_size, pdc_cache.it_size);

	if (pdc_btlb.finfo.num_c)
		printf(", %u shared BTLB", pdc_btlb.finfo.num_c);
	else {
		printf(", %u/%u D/I BTLBs",
		       pdc_btlb.finfo.num_i,
		       pdc_btlb.finfo.num_d);
	}

	/*
	 * Describe the floating-point support.
	 */
#ifndef	FPEMUL
	if (!fpu_present)
		printf("\n%s: no floating point support",
		    self->dv_xname);
	else
#endif /* !FPEMUL */
		{
			printf("\n%s: %s floating point, rev %d",
			    self->dv_xname,
			    hppa_mod_info(HPPA_TYPE_FPU, 
				(fpu_version >> 16) & 0x1f),
			    (fpu_version >> 11) & 0x1f);
		}

	printf("\n");

	/* sanity against luser amongst config editors */
	if (ca->ca_irq == 31) {
		sc->sc_ih = hp700_intr_establish(&sc->sc_dev, IPL_CLOCK,
						 clock_intr, NULL /*trapframe*/,
						 &int_reg_cpu, ca->ca_irq);
	} else {
		printf ("%s: bad irq number %d\n", sc->sc_dev.dv_xname,
			ca->ca_irq);
	}

	/*
	 * Set the allocatable bits in the CPU interrupt registers.
	 * These should only be used by major chipsets, like ASP and
	 * LASI, and the bits used appear to be important - the
	 * ASP doesn't seem to like to use interrupt bits above 28
	 * or below 27.
	 */
	int_reg_cpu.int_reg_allocatable_bits =
		(1 << 28) | (1 << 27) | (1 << 26);
}