Roman Zippel | 0aa7810 | 2006-06-25 05:47:02 -0700 | [diff] [blame] | 1 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | #include <asm/irq.h> |
| 4 | #include <asm/traps.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | #include <asm/apollohw.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | |
Roman Zippel | 0aa7810 | 2006-06-25 05:47:02 -0700 | [diff] [blame] | 7 | void dn_process_int(unsigned int irq, struct pt_regs *fp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | { |
Geert Uytterhoeven | 1425df8 | 2011-07-01 20:39:19 +0200 | [diff] [blame] | 9 | do_IRQ(irq, fp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | |
Roman Zippel | 0aa7810 | 2006-06-25 05:47:02 -0700 | [diff] [blame] | 11 | *(volatile unsigned char *)(pica)=0x20; |
| 12 | *(volatile unsigned char *)(picb)=0x20; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | } |
| 14 | |
Geert Uytterhoeven | e8abf5e | 2011-04-17 22:53:04 +0200 | [diff] [blame] | 15 | unsigned int apollo_irq_startup(struct irq_data *data) |
Roman Zippel | 0aa7810 | 2006-06-25 05:47:02 -0700 | [diff] [blame] | 16 | { |
Geert Uytterhoeven | e8abf5e | 2011-04-17 22:53:04 +0200 | [diff] [blame] | 17 | unsigned int irq = data->irq; |
| 18 | |
Roman Zippel | 0aa7810 | 2006-06-25 05:47:02 -0700 | [diff] [blame] | 19 | if (irq < 8) |
| 20 | *(volatile unsigned char *)(pica+1) &= ~(1 << irq); |
| 21 | else |
| 22 | *(volatile unsigned char *)(picb+1) &= ~(1 << (irq - 8)); |
| 23 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | } |
| 25 | |
Geert Uytterhoeven | e8abf5e | 2011-04-17 22:53:04 +0200 | [diff] [blame] | 26 | void apollo_irq_shutdown(struct irq_data *data) |
Roman Zippel | 0aa7810 | 2006-06-25 05:47:02 -0700 | [diff] [blame] | 27 | { |
Geert Uytterhoeven | e8abf5e | 2011-04-17 22:53:04 +0200 | [diff] [blame] | 28 | unsigned int irq = data->irq; |
| 29 | |
Roman Zippel | 0aa7810 | 2006-06-25 05:47:02 -0700 | [diff] [blame] | 30 | if (irq < 8) |
| 31 | *(volatile unsigned char *)(pica+1) |= (1 << irq); |
| 32 | else |
| 33 | *(volatile unsigned char *)(picb+1) |= (1 << (irq - 8)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | } |
| 35 | |
Geert Uytterhoeven | c288bf2 | 2011-04-13 22:31:28 +0200 | [diff] [blame] | 36 | static struct irq_chip apollo_irq_chip = { |
Roman Zippel | 0aa7810 | 2006-06-25 05:47:02 -0700 | [diff] [blame] | 37 | .name = "apollo", |
Geert Uytterhoeven | c288bf2 | 2011-04-13 22:31:28 +0200 | [diff] [blame] | 38 | .irq_startup = apollo_irq_startup, |
| 39 | .irq_shutdown = apollo_irq_shutdown, |
Roman Zippel | 0aa7810 | 2006-06-25 05:47:02 -0700 | [diff] [blame] | 40 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
Al Viro | 66a3f82 | 2007-07-20 04:33:28 +0100 | [diff] [blame] | 43 | void __init dn_init_IRQ(void) |
Roman Zippel | 0aa7810 | 2006-06-25 05:47:02 -0700 | [diff] [blame] | 44 | { |
| 45 | m68k_setup_user_interrupt(VEC_USER + 96, 16, dn_process_int); |
Geert Uytterhoeven | edb3472 | 2011-06-01 11:15:21 +0200 | [diff] [blame] | 46 | m68k_setup_irq_controller(&apollo_irq_chip, handle_simple_irq, |
| 47 | IRQ_APOLLO, 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | } |