diff options
Diffstat (limited to 'arch/cris/arch-v10/kernel/irq.c')
| -rw-r--r-- | arch/cris/arch-v10/kernel/irq.c | 76 |
1 files changed, 43 insertions, 33 deletions
diff --git a/arch/cris/arch-v10/kernel/irq.c b/arch/cris/arch-v10/kernel/irq.c index b2f16d6fc87..4b368a12201 100644 --- a/arch/cris/arch-v10/kernel/irq.c +++ b/arch/cris/arch-v10/kernel/irq.c @@ -1,4 +1,4 @@ -/* $Id: irq.c,v 1.2 2004/06/09 05:30:27 starvik Exp $ +/* $Id: irq.c,v 1.4 2005/01/04 12:22:28 starvik Exp $ * * linux/arch/cris/kernel/irq.c * @@ -12,11 +12,13 @@ */ #include <asm/irq.h> +#include <linux/irq.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/config.h> -irqvectptr irq_shortcuts[NR_IRQS]; /* vector of shortcut jumps after the irq prologue */ +#define mask_irq(irq_nr) (*R_VECT_MASK_CLR = 1 << (irq_nr)); +#define unmask_irq(irq_nr) (*R_VECT_MASK_SET = 1 << (irq_nr)); /* don't use set_int_vector, it bypasses the linux interrupt handlers. it is * global just so that the kernel gdb can use it. @@ -102,41 +104,52 @@ static void (*interrupt[NR_IRQS])(void) = { IRQ31_interrupt }; -static void (*bad_interrupt[NR_IRQS])(void) = { - NULL, NULL, - NULL, bad_IRQ3_interrupt, - bad_IRQ4_interrupt, bad_IRQ5_interrupt, - bad_IRQ6_interrupt, bad_IRQ7_interrupt, - bad_IRQ8_interrupt, bad_IRQ9_interrupt, - bad_IRQ10_interrupt, bad_IRQ11_interrupt, - bad_IRQ12_interrupt, bad_IRQ13_interrupt, - NULL, NULL, - bad_IRQ16_interrupt, bad_IRQ17_interrupt, - bad_IRQ18_interrupt, bad_IRQ19_interrupt, - bad_IRQ20_interrupt, bad_IRQ21_interrupt, - bad_IRQ22_interrupt, bad_IRQ23_interrupt, - bad_IRQ24_interrupt, bad_IRQ25_interrupt, - NULL, NULL, NULL, NULL, NULL, - bad_IRQ31_interrupt -}; +static void enable_crisv10_irq(unsigned int irq); + +static unsigned int startup_crisv10_irq(unsigned int irq) +{ + enable_crisv10_irq(irq); + return 0; +} + +#define shutdown_crisv10_irq disable_crisv10_irq -void arch_setup_irq(int irq) +static void enable_crisv10_irq(unsigned int irq) { - set_int_vector(irq, interrupt[irq]); + unmask_irq(irq); } -void arch_free_irq(int irq) +static void disable_crisv10_irq(unsigned int irq) { - set_int_vector(irq, bad_interrupt[irq]); + mask_irq(irq); } +static void ack_crisv10_irq(unsigned int irq) +{ +} + +static void end_crisv10_irq(unsigned int irq) +{ +} + +static struct hw_interrupt_type crisv10_irq_type = { + .typename = "CRISv10", + .startup = startup_crisv10_irq, + .shutdown = shutdown_crisv10_irq, + .enable = enable_crisv10_irq, + .disable = disable_crisv10_irq, + .ack = ack_crisv10_irq, + .end = end_crisv10_irq, + .set_affinity = NULL +}; + void weird_irq(void); void system_call(void); /* from entry.S */ void do_sigtrap(void); /* from entry.S */ void gdb_handle_breakpoint(void); /* from entry.S */ /* init_IRQ() is called by start_kernel and is responsible for fixing IRQ masks and - setting the irq vector table to point to bad_interrupt ptrs. + setting the irq vector table. */ void __init @@ -154,14 +167,15 @@ init_IRQ(void) *R_VECT_MASK_CLR = 0xffffffff; - /* clear the shortcut entry points */ - - for(i = 0; i < NR_IRQS; i++) - irq_shortcuts[i] = NULL; - for (i = 0; i < 256; i++) etrax_irv->v[i] = weird_irq; + /* Initialize IRQ handler descriptiors. */ + for(i = 2; i < NR_IRQS; i++) { + irq_desc[i].handler = &crisv10_irq_type; + set_int_vector(i, interrupt[i]); + } + /* the entries in the break vector contain actual code to be executed by the associated break handler, rather than just a jump address. therefore we need to setup a default breakpoint handler @@ -170,10 +184,6 @@ init_IRQ(void) for (i = 0; i < 16; i++) set_break_vector(i, do_sigtrap); - /* set all etrax irq's to the bad handlers */ - for (i = 2; i < NR_IRQS; i++) - set_int_vector(i, bad_interrupt[i]); - /* except IRQ 15 which is the multiple-IRQ handler on Etrax100 */ set_int_vector(15, multiple_interrupt); |