target/linux/brcm63xx-2.6/files/arch/mips/bcm963xx/int-handler.S

   1 /*
   2 <:copyright-gpl
   3  Copyright 2002 Broadcom Corp. All Rights Reserved.
   4
   5  This program is free software; you can distribute it and/or modify it
   6  under the terms of the GNU General Public License (Version 2) as
   7  published by the Free Software Foundation.
   8
   9  This program is distributed in the hope it will be useful, but WITHOUT
  10  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  for more details.
  13
  14  You should have received a copy of the GNU General Public License along
  15  with this program; if not, write to the Free Software Foundation, Inc.,
  16  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  17 :>
  18 */
  19 /*
  20  * Generic interrupt handler for Broadcom MIPS boards
  21  */
  22
  23 #include <linux/autoconf.h>
  24
  25 #include <asm/asm.h>
  26 #include <asm/mipsregs.h>
  27 #include <asm/regdef.h>
  28 #include <asm/stackframe.h>
  29
  30 /*
  31  *      MIPS IRQ        Source
  32  *      --------        ------
  33  *             0        Software (ignored)
  34  *             1        Software (ignored)
  35  *             2        Combined hardware interrupt (hw0)
  36  *             3        Hardware
  37  *             4        Hardware
  38  *             5        Hardware
  39  *             6        Hardware
  40  *             7        R4k timer
  41  */
  42
  43         .text
  44         .set    noreorder
  45         .set    noat
  46         .align  5
  47         NESTED(brcmIRQ, PT_SIZE, sp)
  48         SAVE_ALL
  49         CLI
  50         .set    noreorder
  51         .set    at
  52
  53         jal             plat_irq_dispatch
  54         move    a0, sp
  55
  56         j       ret_from_irq
  57         nop
  58
  59         END(brcmIRQ)