bd0b9ac405
Most interrupt flow handlers do not use the irq argument. Those few which use it can retrieve the irq number from the irq descriptor. Remove the argument. Search and replace was done with coccinelle and some extra helper scripts around it. Thanks to Julia for her help! Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com>
174 lines
4 KiB
C
174 lines
4 KiB
C
/*
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* Amiga Linux interrupt handling code
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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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 <linux/errno.h>
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#include <linux/irq.h>
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#include <asm/irq.h>
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#include <asm/traps.h>
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#include <asm/amigahw.h>
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#include <asm/amigaints.h>
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#include <asm/amipcmcia.h>
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/*
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* Enable/disable a particular machine specific interrupt source.
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* Note that this may affect other interrupts in case of a shared interrupt.
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* This function should only be called for a _very_ short time to change some
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* internal data, that may not be changed by the interrupt at the same time.
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*/
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static void amiga_irq_enable(struct irq_data *data)
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{
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amiga_custom.intena = IF_SETCLR | (1 << (data->irq - IRQ_USER));
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}
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static void amiga_irq_disable(struct irq_data *data)
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{
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amiga_custom.intena = 1 << (data->irq - IRQ_USER);
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}
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static struct irq_chip amiga_irq_chip = {
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.name = "amiga",
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.irq_enable = amiga_irq_enable,
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.irq_disable = amiga_irq_disable,
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};
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/*
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* The builtin Amiga hardware interrupt handlers.
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*/
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static void ami_int1(struct irq_desc *desc)
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{
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unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
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/* if serial transmit buffer empty, interrupt */
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if (ints & IF_TBE) {
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amiga_custom.intreq = IF_TBE;
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generic_handle_irq(IRQ_AMIGA_TBE);
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}
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/* if floppy disk transfer complete, interrupt */
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if (ints & IF_DSKBLK) {
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amiga_custom.intreq = IF_DSKBLK;
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generic_handle_irq(IRQ_AMIGA_DSKBLK);
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}
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/* if software interrupt set, interrupt */
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if (ints & IF_SOFT) {
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amiga_custom.intreq = IF_SOFT;
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generic_handle_irq(IRQ_AMIGA_SOFT);
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}
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}
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static void ami_int3(struct irq_desc *desc)
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{
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unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
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/* if a blitter interrupt */
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if (ints & IF_BLIT) {
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amiga_custom.intreq = IF_BLIT;
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generic_handle_irq(IRQ_AMIGA_BLIT);
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}
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/* if a copper interrupt */
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if (ints & IF_COPER) {
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amiga_custom.intreq = IF_COPER;
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generic_handle_irq(IRQ_AMIGA_COPPER);
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}
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/* if a vertical blank interrupt */
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if (ints & IF_VERTB) {
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amiga_custom.intreq = IF_VERTB;
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generic_handle_irq(IRQ_AMIGA_VERTB);
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}
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}
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static void ami_int4(struct irq_desc *desc)
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{
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unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
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/* if audio 0 interrupt */
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if (ints & IF_AUD0) {
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amiga_custom.intreq = IF_AUD0;
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generic_handle_irq(IRQ_AMIGA_AUD0);
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}
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/* if audio 1 interrupt */
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if (ints & IF_AUD1) {
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amiga_custom.intreq = IF_AUD1;
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generic_handle_irq(IRQ_AMIGA_AUD1);
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}
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/* if audio 2 interrupt */
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if (ints & IF_AUD2) {
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amiga_custom.intreq = IF_AUD2;
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generic_handle_irq(IRQ_AMIGA_AUD2);
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}
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/* if audio 3 interrupt */
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if (ints & IF_AUD3) {
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amiga_custom.intreq = IF_AUD3;
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generic_handle_irq(IRQ_AMIGA_AUD3);
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}
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}
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static void ami_int5(struct irq_desc *desc)
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{
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unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar;
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/* if serial receive buffer full interrupt */
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if (ints & IF_RBF) {
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/* acknowledge of IF_RBF must be done by the serial interrupt */
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generic_handle_irq(IRQ_AMIGA_RBF);
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}
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/* if a disk sync interrupt */
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if (ints & IF_DSKSYN) {
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amiga_custom.intreq = IF_DSKSYN;
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generic_handle_irq(IRQ_AMIGA_DSKSYN);
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}
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}
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/*
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* void amiga_init_IRQ(void)
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*
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* Parameters: None
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*
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* Returns: Nothing
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*
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* This function should be called during kernel startup to initialize
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* the amiga IRQ handling routines.
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*/
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void __init amiga_init_IRQ(void)
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{
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m68k_setup_irq_controller(&amiga_irq_chip, handle_simple_irq, IRQ_USER,
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AMI_STD_IRQS);
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irq_set_chained_handler(IRQ_AUTO_1, ami_int1);
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irq_set_chained_handler(IRQ_AUTO_3, ami_int3);
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irq_set_chained_handler(IRQ_AUTO_4, ami_int4);
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irq_set_chained_handler(IRQ_AUTO_5, ami_int5);
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/* turn off PCMCIA interrupts */
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if (AMIGAHW_PRESENT(PCMCIA))
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gayle.inten = GAYLE_IRQ_IDE;
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/* turn off all interrupts and enable the master interrupt bit */
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amiga_custom.intena = 0x7fff;
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amiga_custom.intreq = 0x7fff;
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amiga_custom.intena = IF_SETCLR | IF_INTEN;
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cia_init_IRQ(&ciaa_base);
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cia_init_IRQ(&ciab_base);
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}
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