/*
* Copyright (c) 2008 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - 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 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.
*/
/** @addtogroup sparc64
* @{
*/
/**
* @file
* @brief Driver for the UPA to PCI bridge (Psycho).
*/
#include <arch/drivers/psycho.h>
#include <arch/trap/interrupt.h>
#include <mm/page.h>
#include <mm/slab.h>
#include <arch/types.h>
#include <genarch/ofw/ofw_tree.h>
#include <byteorder.h>
#define PSYCHO_INTERNAL_REG 2
#define PSYCHO_OBIO_IMR_BASE (0x1000 / sizeof(uint64_t))
#define PSYCHO_OBIO_IMR(ino) (PSYCHO_OBIO_IMR_BASE + ((ino) & INO_MASK))
#define PSYCHO_OBIO_CIR_BASE (0x1800 / sizeof(uint64_t))
#define PSYCHO_OBIO_CIR(ino) (PSYCHO_OBIO_CIR_BASE + ((ino) & INO_MASK))
psycho_t *psycho_a = NULL;
psycho_t *psycho_b = NULL;
psycho_t *psycho_init(ofw_tree_node_t *node)
{
psycho_t *psycho;
ofw_tree_property_t *prop;
prop = ofw_tree_getprop(node, "reg");
if (!prop || !prop->value)
return NULL;
count_t regs = prop->size / sizeof(ofw_upa_reg_t);
if (regs < PSYCHO_INTERNAL_REG + 1)
return NULL;
ofw_upa_reg_t *reg =
&((ofw_upa_reg_t *) prop->value)[PSYCHO_INTERNAL_REG];
uintptr_t paddr;
if (!ofw_upa_apply_ranges(node->parent, reg, &paddr))
return NULL;
psycho
= (psycho_t
*) malloc(sizeof(psycho_t
), FRAME_ATOMIC
);
if (!psycho)
return NULL;
psycho->regs = (uint64_t *) hw_map(paddr, reg->size);
return psycho;
}
void psycho_enable_interrupt(psycho_t *psycho, int inr)
{
int ino = inr & ~IGN_MASK;
uint64_t imr = psycho->regs[PSYCHO_OBIO_IMR(ino)];
imr |= host2uint64_t_le(IMAP_V_MASK);
psycho->regs[PSYCHO_OBIO_IMR(ino)] = imr;
}
void psycho_clear_interrupt(psycho_t *psycho, int inr)
{
int ino = inr & ~IGN_MASK;
uint64_t idle = host2uint64_t_le(0);
psycho->regs[PSYCHO_OBIO_CIR(ino)] = idle;
}
/** @}
*/