c87abd75b3
Cleanup jmr3927, tx4927 and tx4938 irq codes, using common IRQ_CPU, I8259 and IRQ_TXX9 irq routines. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/*
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* Common tx4927 irq handler
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*
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* Author: MontaVista Software, Inc.
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* source@mvista.com
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*
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <asm/irq_cpu.h>
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#include <asm/mipsregs.h>
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#include <asm/tx4927/tx4927.h>
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#ifdef CONFIG_TOSHIBA_RBTX4927
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#include <asm/tx4927/toshiba_rbtx4927.h>
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#endif
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void __init tx4927_irq_init(void)
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{
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mips_cpu_irq_init();
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txx9_irq_init(TX4927_IRC_REG);
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set_irq_chained_handler(TX4927_IRQ_NEST_PIC_ON_CP0, handle_simple_irq);
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}
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asmlinkage void plat_irq_dispatch(void)
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{
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unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
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if (pending & STATUSF_IP7) /* cpu timer */
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do_IRQ(TX4927_IRQ_CPU_TIMER);
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else if (pending & STATUSF_IP2) { /* tx4927 pic */
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int irq = txx9_irq();
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#ifdef CONFIG_TOSHIBA_RBTX4927
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if (irq == TX4927_IRQ_NEST_EXT_ON_PIC)
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irq = toshiba_rbtx4927_irq_nested(irq);
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#endif
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if (unlikely(irq < 0)) {
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spurious_interrupt();
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return;
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}
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do_IRQ(irq);
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} else if (pending & STATUSF_IP0) /* user line 0 */
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do_IRQ(TX4927_IRQ_USER0);
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else if (pending & STATUSF_IP1) /* user line 1 */
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do_IRQ(TX4927_IRQ_USER1);
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else
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spurious_interrupt();
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}
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