/*
 * spu hypervisor abstraction for direct hardware access.
 *
 *  (C) Copyright IBM Deutschland Entwicklung GmbH 2005
 *  Copyright 2006 Sony Corp.
 *
 *  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; version 2 of the License.
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/wait.h>
#include <linux/mm.h>
#include <linux/io.h>
#include <linux/mutex.h>
#include <linux/device.h>
#include <linux/sched.h>

#include <asm/spu.h>
#include <asm/spu_priv1.h>
#include <asm/firmware.h>
#include <asm/prom.h>

#include "interrupt.h"
#include "spu_priv1_mmio.h"

static void int_mask_and(struct spu *spu, int class, u64 mask)
{
	u64 old_mask;

	old_mask = in_be64(&spu->priv1->int_mask_RW[class]);
	out_be64(&spu->priv1->int_mask_RW[class], old_mask & mask);
}

static void int_mask_or(struct spu *spu, int class, u64 mask)
{
	u64 old_mask;

	old_mask = in_be64(&spu->priv1->int_mask_RW[class]);
	out_be64(&spu->priv1->int_mask_RW[class], old_mask | mask);
}

static void int_mask_set(struct spu *spu, int class, u64 mask)
{
	out_be64(&spu->priv1->int_mask_RW[class], mask);
}

static u64 int_mask_get(struct spu *spu, int class)
{
	return in_be64(&spu->priv1->int_mask_RW[class]);
}

static void int_stat_clear(struct spu *spu, int class, u64 stat)
{
	out_be64(&spu->priv1->int_stat_RW[class], stat);
}

static u64 int_stat_get(struct spu *spu, int class)
{
	return in_be64(&spu->priv1->int_stat_RW[class]);
}

static void cpu_affinity_set(struct spu *spu, int cpu)
{
	u64 target;
	u64 route;

	if (nr_cpus_node(spu->node)) {
		const struct cpumask *spumask = cpumask_of_node(spu->node),
			*cpumask = cpumask_of_node(cpu_to_node(cpu));

		if (!cpumask_intersects(spumask, cpumask))
			return;
	}

	target = iic_get_target_id(cpu);
	route = target << 48 | target << 32 | target << 16;
	out_be64(&spu->priv1->int_route_RW, route);
}

static u64 mfc_dar_get(struct spu *spu)
{
	return in_be64(&spu->priv1->mfc_dar_RW);
}

static u64 mfc_dsisr_get(struct spu *spu)
{
	return in_be64(&spu->priv1->mfc_dsisr_RW);
}

static void mfc_dsisr_set(struct spu *spu, u64 dsisr)
{
	out_be64(&spu->priv1->mfc_dsisr_RW, dsisr);
}

static void mfc_sdr_setup(struct spu *spu)
{
	out_be64(&spu->priv1->mfc_sdr_RW, mfspr(SPRN_SDR1));
}

static void mfc_sr1_set(struct spu *spu, u64 sr1)
{
	out_be64(&spu->priv1->mfc_sr1_RW, sr1);
}

static u64 mfc_sr1_get(struct spu *spu)
{
	return in_be64(&spu->priv1->mfc_sr1_RW);
}

static void mfc_tclass_id_set(struct spu *spu, u64 tclass_id)
{
	out_be64(&spu->priv1->mfc_tclass_id_RW, tclass_id);
}

static u64 mfc_tclass_id_get(struct spu *spu)
{
	return in_be64(&spu->priv1->mfc_tclass_id_RW);
}

static void tlb_invalidate(struct spu *spu)
{
	out_be64(&spu->priv1->tlb_invalidate_entry_W, 0ul);
}

static void resource_allocation_groupID_set(struct spu *spu, u64 id)
{
	out_be64(&spu->priv1->resource_allocation_groupID_RW, id);
}

static u64 resource_allocation_groupID_get(struct spu *spu)
{
	return in_be64(&spu->priv1->resource_allocation_groupID_RW);
}

static void resource_allocation_enable_set(struct spu *spu, u64 enable)
{
	out_be64(&spu->priv1->resource_allocation_enable_RW, enable);
}

static u64 resource_allocation_enable_get(struct spu *spu)
{
	return in_be64(&spu->priv1->resource_allocation_enable_RW);
}

const struct spu_priv1_ops spu_priv1_mmio_ops =
{
	.int_mask_and = int_mask_and,
	.int_mask_or = int_mask_or,
	.int_mask_set = int_mask_set,
	.int_mask_get = int_mask_get,
	.int_stat_clear = int_stat_clear,
	.int_stat_get = int_stat_get,
	.cpu_affinity_set = cpu_affinity_set,
	.mfc_dar_get = mfc_dar_get,
	.mfc_dsisr_get = mfc_dsisr_get,
	.mfc_dsisr_set = mfc_dsisr_set,
	.mfc_sdr_setup = mfc_sdr_setup,
	.mfc_sr1_set = mfc_sr1_set,
	.mfc_sr1_get = mfc_sr1_get,
	.mfc_tclass_id_set = mfc_tclass_id_set,
	.mfc_tclass_id_get = mfc_tclass_id_get,
	.tlb_invalidate = tlb_invalidate,
	.resource_allocation_groupID_set = resource_allocation_groupID_set,
	.resource_allocation_groupID_get = resource_allocation_groupID_get,
	.resource_allocation_enable_set = resource_allocation_enable_set,
	.resource_allocation_enable_get = resource_allocation_enable_get,
};
