mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 23:47:24 +00:00
b36df56115
This patch moves some ppc4xx related headers from the common include directory (include/) to the powerpc specific one (arch/powerpc/include/asm/). This way to common include directory is not so cluttered with files. Signed-off-by: Stefan Roese <sr@denx.de>
100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
/*
|
|
* (C) Copyright 2008
|
|
* Ricado Ribalda-Universidad Autonoma de Madrid-ricardo.ribalda@uam.es
|
|
* This work has been supported by: QTechnology http://qtec.com/
|
|
* Based on interrupts.c Wolfgang Denk-DENX Software Engineering-wd@denx.de
|
|
* 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 of the License, 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <common.h>
|
|
#include <watchdog.h>
|
|
#include <command.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/interrupt.h>
|
|
#include <asm/ppc4xx.h>
|
|
#include <ppc_asm.tmpl>
|
|
#include <commproc.h>
|
|
#include <asm/io.h>
|
|
#include <asm/xilinx_irq.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
void pic_enable(void)
|
|
{
|
|
debug("Xilinx PIC at 0x%8x\n", intc);
|
|
|
|
/*
|
|
* Disable all external interrupts until they are
|
|
* explicitly requested.
|
|
*/
|
|
out_be32((u32 *) IER, 0);
|
|
|
|
/* Acknowledge any pending interrupts just in case. */
|
|
out_be32((u32 *) IAR, 0xffffffff);
|
|
|
|
/* Turn on the Master Enable. */
|
|
out_be32((u32 *) MER, 0x3UL);
|
|
|
|
return;
|
|
}
|
|
|
|
int xilinx_pic_irq_get(void)
|
|
{
|
|
u32 irq;
|
|
irq = in_be32((u32 *) IVR);
|
|
|
|
/* If no interrupt is pending then all bits of the IVR are set to 1. As
|
|
* the IVR is as many bits wide as numbers of inputs are available.
|
|
* Therefore, if all bits of the IVR are set to one, its content will
|
|
* be bigger than XPAR_INTC_MAX_NUM_INTR_INPUTS.
|
|
*/
|
|
if (irq >= XPAR_INTC_MAX_NUM_INTR_INPUTS)
|
|
irq = -1; /* report no pending interrupt. */
|
|
|
|
debug("get_irq: %d\n", irq);
|
|
return (irq);
|
|
}
|
|
|
|
void pic_irq_enable(unsigned int irq)
|
|
{
|
|
u32 mask = IRQ_MASK(irq);
|
|
debug("enable: %d\n", irq);
|
|
out_be32((u32 *) SIE, mask);
|
|
}
|
|
|
|
void pic_irq_disable(unsigned int irq)
|
|
{
|
|
u32 mask = IRQ_MASK(irq);
|
|
debug("disable: %d\n", irq);
|
|
out_be32((u32 *) CIE, mask);
|
|
}
|
|
|
|
void pic_irq_ack(unsigned int irq)
|
|
{
|
|
u32 mask = IRQ_MASK(irq);
|
|
debug("ack: %d\n", irq);
|
|
out_be32((u32 *) IAR, mask);
|
|
}
|
|
|
|
void external_interrupt(struct pt_regs *regs)
|
|
{
|
|
int irq;
|
|
|
|
irq = xilinx_pic_irq_get();
|
|
if (irq < 0)
|
|
return;
|
|
|
|
interrupt_run_handler(irq);
|
|
|
|
return;
|
|
}
|