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/*
* Copyright (c) 2011 Aeroflex Gaisler
*
* BSD license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <asm-leon/leonstack.h>
#include <asm-leon/irq.h>
#define NULL 0
/* multi vector trapping version of trap handler installs */
int
mvtlolevelirqinstall (int irqnr, void (*handler) ())
{
unsigned long h = (unsigned long) handler;
unsigned long *addr =
(unsigned long *) ((locore_readtbr () & ~0xFFF) + 0x100 + (16 * irqnr));
if (irqnr == 0 || irqnr >= 15)
{
return 0;
}
addr[0] = ((h >> 10) & 0x3fffff) | 0x29000000; /* 29000000: sethi %hi(handler), %l4 */
addr[1] = ((h) & 0x3ff) | 0x81c52000; /* 81c52000: jmpl %l4 + %lo(handler), %g0 */
addr[2] = 0x01000000; /* 01000000: nop */
addr[3] = 0x01000000; /* 01000000: nop */
return 1;
}
int
lolevelirqinstall (int irqnr, void (*handler) ())
{
return mvtlolevelirqinstall (irqnr, handler);
}
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