diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/m68k/amiga/amiints.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/m68k/amiga/amiints.c | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/ANDROID_3.4.5/arch/m68k/amiga/amiints.c b/ANDROID_3.4.5/arch/m68k/amiga/amiints.c deleted file mode 100644 index 47b5f900..00000000 --- a/ANDROID_3.4.5/arch/m68k/amiga/amiints.c +++ /dev/null @@ -1,174 +0,0 @@ -/* - * Amiga Linux interrupt handling code - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/errno.h> -#include <linux/irq.h> - -#include <asm/irq.h> -#include <asm/traps.h> -#include <asm/amigahw.h> -#include <asm/amigaints.h> -#include <asm/amipcmcia.h> - - -/* - * Enable/disable a particular machine specific interrupt source. - * Note that this may affect other interrupts in case of a shared interrupt. - * This function should only be called for a _very_ short time to change some - * internal data, that may not be changed by the interrupt at the same time. - */ - -static void amiga_irq_enable(struct irq_data *data) -{ - amiga_custom.intena = IF_SETCLR | (1 << (data->irq - IRQ_USER)); -} - -static void amiga_irq_disable(struct irq_data *data) -{ - amiga_custom.intena = 1 << (data->irq - IRQ_USER); -} - -static struct irq_chip amiga_irq_chip = { - .name = "amiga", - .irq_enable = amiga_irq_enable, - .irq_disable = amiga_irq_disable, -}; - - -/* - * The builtin Amiga hardware interrupt handlers. - */ - -static void ami_int1(unsigned int irq, struct irq_desc *desc) -{ - unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; - - /* if serial transmit buffer empty, interrupt */ - if (ints & IF_TBE) { - amiga_custom.intreq = IF_TBE; - generic_handle_irq(IRQ_AMIGA_TBE); - } - - /* if floppy disk transfer complete, interrupt */ - if (ints & IF_DSKBLK) { - amiga_custom.intreq = IF_DSKBLK; - generic_handle_irq(IRQ_AMIGA_DSKBLK); - } - - /* if software interrupt set, interrupt */ - if (ints & IF_SOFT) { - amiga_custom.intreq = IF_SOFT; - generic_handle_irq(IRQ_AMIGA_SOFT); - } -} - -static void ami_int3(unsigned int irq, struct irq_desc *desc) -{ - unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; - - /* if a blitter interrupt */ - if (ints & IF_BLIT) { - amiga_custom.intreq = IF_BLIT; - generic_handle_irq(IRQ_AMIGA_BLIT); - } - - /* if a copper interrupt */ - if (ints & IF_COPER) { - amiga_custom.intreq = IF_COPER; - generic_handle_irq(IRQ_AMIGA_COPPER); - } - - /* if a vertical blank interrupt */ - if (ints & IF_VERTB) { - amiga_custom.intreq = IF_VERTB; - generic_handle_irq(IRQ_AMIGA_VERTB); - } -} - -static void ami_int4(unsigned int irq, struct irq_desc *desc) -{ - unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; - - /* if audio 0 interrupt */ - if (ints & IF_AUD0) { - amiga_custom.intreq = IF_AUD0; - generic_handle_irq(IRQ_AMIGA_AUD0); - } - - /* if audio 1 interrupt */ - if (ints & IF_AUD1) { - amiga_custom.intreq = IF_AUD1; - generic_handle_irq(IRQ_AMIGA_AUD1); - } - - /* if audio 2 interrupt */ - if (ints & IF_AUD2) { - amiga_custom.intreq = IF_AUD2; - generic_handle_irq(IRQ_AMIGA_AUD2); - } - - /* if audio 3 interrupt */ - if (ints & IF_AUD3) { - amiga_custom.intreq = IF_AUD3; - generic_handle_irq(IRQ_AMIGA_AUD3); - } -} - -static void ami_int5(unsigned int irq, struct irq_desc *desc) -{ - unsigned short ints = amiga_custom.intreqr & amiga_custom.intenar; - - /* if serial receive buffer full interrupt */ - if (ints & IF_RBF) { - /* acknowledge of IF_RBF must be done by the serial interrupt */ - generic_handle_irq(IRQ_AMIGA_RBF); - } - - /* if a disk sync interrupt */ - if (ints & IF_DSKSYN) { - amiga_custom.intreq = IF_DSKSYN; - generic_handle_irq(IRQ_AMIGA_DSKSYN); - } -} - - -/* - * void amiga_init_IRQ(void) - * - * Parameters: None - * - * Returns: Nothing - * - * This function should be called during kernel startup to initialize - * the amiga IRQ handling routines. - */ - -void __init amiga_init_IRQ(void) -{ - m68k_setup_irq_controller(&amiga_irq_chip, handle_simple_irq, IRQ_USER, - AMI_STD_IRQS); - - irq_set_chained_handler(IRQ_AUTO_1, ami_int1); - irq_set_chained_handler(IRQ_AUTO_3, ami_int3); - irq_set_chained_handler(IRQ_AUTO_4, ami_int4); - irq_set_chained_handler(IRQ_AUTO_5, ami_int5); - - /* turn off PCMCIA interrupts */ - if (AMIGAHW_PRESENT(PCMCIA)) - gayle.inten = GAYLE_IRQ_IDE; - - /* turn off all interrupts and enable the master interrupt bit */ - amiga_custom.intena = 0x7fff; - amiga_custom.intreq = 0x7fff; - amiga_custom.intena = IF_SETCLR | IF_INTEN; - - cia_init_IRQ(&ciaa_base); - cia_init_IRQ(&ciab_base); -} |