diff options
Diffstat (limited to 'include/asm-cris/arch-v32/irq.h')
| -rw-r--r-- | include/asm-cris/arch-v32/irq.h | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/include/asm-cris/arch-v32/irq.h b/include/asm-cris/arch-v32/irq.h deleted file mode 100644 index 9e4c9fbdfddf..000000000000 --- a/include/asm-cris/arch-v32/irq.h +++ /dev/null | |||
| @@ -1,124 +0,0 @@ | |||
| 1 | #ifndef _ASM_ARCH_IRQ_H | ||
| 2 | #define _ASM_ARCH_IRQ_H | ||
| 3 | |||
| 4 | #include <hwregs/intr_vect.h> | ||
| 5 | |||
| 6 | /* Number of non-cpu interrupts. */ | ||
| 7 | #define NR_IRQS NBR_INTR_VECT /* Exceptions + IRQs */ | ||
| 8 | #define FIRST_IRQ 0x31 /* Exception number for first IRQ */ | ||
| 9 | #define NR_REAL_IRQS (NBR_INTR_VECT - FIRST_IRQ) /* IRQs */ | ||
| 10 | #if NR_REAL_IRQS > 32 | ||
| 11 | #define MACH_IRQS 64 | ||
| 12 | #else | ||
| 13 | #define MACH_IRQS 32 | ||
| 14 | #endif | ||
| 15 | |||
| 16 | #ifndef __ASSEMBLY__ | ||
| 17 | /* Global IRQ vector. */ | ||
| 18 | typedef void (*irqvectptr)(void); | ||
| 19 | |||
| 20 | struct etrax_interrupt_vector { | ||
| 21 | irqvectptr v[256]; | ||
| 22 | }; | ||
| 23 | |||
| 24 | extern struct etrax_interrupt_vector *etrax_irv; /* head.S */ | ||
| 25 | |||
| 26 | void mask_irq(int irq); | ||
| 27 | void unmask_irq(int irq); | ||
| 28 | |||
| 29 | void set_exception_vector(int n, irqvectptr addr); | ||
| 30 | |||
| 31 | /* Save registers so that they match pt_regs. */ | ||
| 32 | #define SAVE_ALL \ | ||
| 33 | "subq 12,$sp\n\t" \ | ||
| 34 | "move $erp,[$sp]\n\t" \ | ||
| 35 | "subq 4,$sp\n\t" \ | ||
| 36 | "move $srp,[$sp]\n\t" \ | ||
| 37 | "subq 4,$sp\n\t" \ | ||
| 38 | "move $ccs,[$sp]\n\t" \ | ||
| 39 | "subq 4,$sp\n\t" \ | ||
| 40 | "move $spc,[$sp]\n\t" \ | ||
| 41 | "subq 4,$sp\n\t" \ | ||
| 42 | "move $mof,[$sp]\n\t" \ | ||
| 43 | "subq 4,$sp\n\t" \ | ||
| 44 | "move $srs,[$sp]\n\t" \ | ||
| 45 | "subq 4,$sp\n\t" \ | ||
| 46 | "move.d $acr,[$sp]\n\t" \ | ||
| 47 | "subq 14*4,$sp\n\t" \ | ||
| 48 | "movem $r13,[$sp]\n\t" \ | ||
| 49 | "subq 4,$sp\n\t" \ | ||
| 50 | "move.d $r10,[$sp]\n" | ||
| 51 | |||
| 52 | #define STR2(x) #x | ||
| 53 | #define STR(x) STR2(x) | ||
| 54 | |||
| 55 | #define IRQ_NAME2(nr) nr##_interrupt(void) | ||
| 56 | #define IRQ_NAME(nr) IRQ_NAME2(IRQ##nr) | ||
| 57 | |||
| 58 | /* | ||
| 59 | * The reason for setting the S-bit when debugging the kernel is that we want | ||
| 60 | * hardware breakpoints to remain active while we are in an exception handler. | ||
| 61 | * Note that we cannot simply copy S1, since we may come here from user-space, | ||
| 62 | * or any context where the S-bit wasn't set. | ||
| 63 | */ | ||
| 64 | #ifdef CONFIG_ETRAX_KGDB | ||
| 65 | #define KGDB_FIXUP \ | ||
| 66 | "move $ccs, $r10\n\t" \ | ||
| 67 | "or.d (1<<9), $r10\n\t" \ | ||
| 68 | "move $r10, $ccs\n\t" | ||
| 69 | #else | ||
| 70 | #define KGDB_FIXUP "" | ||
| 71 | #endif | ||
| 72 | |||
| 73 | /* | ||
| 74 | * Make sure the causing IRQ is blocked, then call do_IRQ. After that, unblock | ||
| 75 | * and jump to ret_from_intr which is found in entry.S. | ||
| 76 | * | ||
| 77 | * The reason for blocking the IRQ is to allow an sti() before the handler, | ||
| 78 | * which will acknowledge the interrupt, is run. The actual blocking is made | ||
| 79 | * by crisv32_do_IRQ. | ||
| 80 | */ | ||
| 81 | #define BUILD_IRQ(nr) \ | ||
| 82 | void IRQ_NAME(nr); \ | ||
| 83 | __asm__ ( \ | ||
| 84 | ".text\n\t" \ | ||
| 85 | "IRQ" #nr "_interrupt:\n\t" \ | ||
| 86 | SAVE_ALL \ | ||
| 87 | KGDB_FIXUP \ | ||
| 88 | "move.d "#nr",$r10\n\t" \ | ||
| 89 | "move.d $sp, $r12\n\t" \ | ||
| 90 | "jsr crisv32_do_IRQ\n\t" \ | ||
| 91 | "moveq 1, $r11\n\t" \ | ||
| 92 | "jump ret_from_intr\n\t" \ | ||
| 93 | "nop\n\t"); | ||
| 94 | /* | ||
| 95 | * This is subtle. The timer interrupt is crucial and it should not be disabled | ||
| 96 | * for too long. However, if it had been a normal interrupt as per BUILD_IRQ, it | ||
| 97 | * would have been BLOCK'ed, and then softirq's are run before we return here to | ||
| 98 | * UNBLOCK. If the softirq's take too much time to run, the timer irq won't run | ||
| 99 | * and the watchdog will kill us. | ||
| 100 | * | ||
| 101 | * Furthermore, if a lot of other irq's occur before we return here, the | ||
| 102 | * multiple_irq handler is run and it prioritizes the timer interrupt. However | ||
| 103 | * if we had BLOCK'edit here, we would not get the multiple_irq at all. | ||
| 104 | * | ||
| 105 | * The non-blocking here is based on the knowledge that the timer interrupt is | ||
| 106 | * registred as a fast interrupt (IRQF_DISABLED) so that we _know_ there will not | ||
| 107 | * be an sti() before the timer irq handler is run to acknowledge the interrupt. | ||
| 108 | */ | ||
| 109 | #define BUILD_TIMER_IRQ(nr, mask) \ | ||
| 110 | void IRQ_NAME(nr); \ | ||
| 111 | __asm__ ( \ | ||
| 112 | ".text\n\t" \ | ||
| 113 | "IRQ" #nr "_interrupt:\n\t" \ | ||
| 114 | SAVE_ALL \ | ||
| 115 | KGDB_FIXUP \ | ||
| 116 | "move.d "#nr",$r10\n\t" \ | ||
| 117 | "move.d $sp,$r12\n\t" \ | ||
| 118 | "jsr crisv32_do_IRQ\n\t" \ | ||
| 119 | "moveq 0,$r11\n\t" \ | ||
| 120 | "jump ret_from_intr\n\t" \ | ||
| 121 | "nop\n\t"); | ||
| 122 | |||
| 123 | #endif /* __ASSEMBLY__ */ | ||
| 124 | #endif /* _ASM_ARCH_IRQ_H */ | ||