/*	$OpenBSD: cpu.c,v 1.3 2010/07/01 04:33:23 jsing Exp $	*/

/*
 * Copyright (c) 2005 Michael Shalayeff
 * All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

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

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

#include <arch/hppa/dev/cpudevs.h>

struct cpu_softc {
	struct  device sc_dev;

	hppa_hpa_t sc_hpa;
	void *sc_ih;
};

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

int	cpu_hardclock(void *);

struct cfattach cpu_ca = {
	sizeof(struct cpu_softc), cpumatch, cpuattach
};

struct cfdriver cpu_cd = {
	NULL, "cpu", DV_DULL
};

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

	if ((ca->ca_name && !strcmp(ca->ca_name, "cpu")) ||
	    (ca->ca_type.iodc_type == HPPA_TYPE_NPROC &&
	     ca->ca_type.iodc_sv_model == HPPA_NPROC_HPPA))
		return 1;

	return 0;
}

int
cpu_hardclock(void *v)
{
	hardclock(v);
	return (1);
}

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

	/* struct cpu_softc *sc = (struct cpu_softc *)self; */
	/* struct confargs *ca = aux; */
	u_int mhz = 100 * cpu_ticksnum / cpu_ticksdenom;
	const char *p;

	printf (": %s ", cpu_typename);
	if (pdc_model.hvers) {
		static const char lvls[4][4] = { "0", "1", "1.5", "2" };

		printf("L%s-%c ", lvls[pdc_model.pa_lvl], "AB"[pdc_model.mc]);
	}

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

	if (fpu_enable) {
		extern u_int fpu_version;
		u_int32_t ver[2];

		mtctl(fpu_enable, CR_CCR);
		__asm volatile(
		    "fstds   %%fr0,0(%0)\n\t"
		    "copr,0,0\n\t"
		    "fstds   %%fr0,0(%0)"
		    :: "r" (&ver) : "memory");
		mtctl(0, CR_CCR);
		fpu_version = HPPA_FPUVER(ver[0]);
		printf(", FPU %s rev %d",
		    hppa_mod_info(HPPA_TYPE_FPU, fpu_version >> 5),
		    fpu_version & 0x1f);
	}

	printf("\n%s: ", self->dv_xname);
	p = "";
	if (!pdc_cache.dc_conf.cc_sh) {
		printf("%uK(%db/l) Icache, ",
		    pdc_cache.ic_size / 1024, pdc_cache.ic_conf.cc_line * 16);
		p = "D";
	}
	printf("%uK(%db/l) wr-%s %scoherent %scache, ",
	    pdc_cache.dc_size / 1024, pdc_cache.dc_conf.cc_line * 16,
	    pdc_cache.dc_conf.cc_wt? "thru" : "back",
	    pdc_cache.dc_conf.cc_cst? "" : "in", p);

	p = "";
	if (!pdc_cache.dt_conf.tc_sh) {
		printf("%u ITLB, ", pdc_cache.it_size);
		p = "D";
	}
	printf("%u %scoherent %sTLB\n",
	    pdc_cache.dt_size, pdc_cache.dt_conf.tc_cst? "" : "in", p);

/* TODO spin up others */
}