diff options
Diffstat (limited to 'arch/mips/au1000/common/irq.c')
| -rw-r--r-- | arch/mips/au1000/common/irq.c | 662 |
1 files changed, 317 insertions, 345 deletions
diff --git a/arch/mips/au1000/common/irq.c b/arch/mips/au1000/common/irq.c index a6640b998c6e..c00f308fd505 100644 --- a/arch/mips/au1000/common/irq.c +++ b/arch/mips/au1000/common/irq.c @@ -26,39 +26,18 @@ * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <linux/errno.h> +#include <linux/bitops.h> #include <linux/init.h> -#include <linux/irq.h> -#include <linux/kernel_stat.h> -#include <linux/module.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/types.h> +#include <linux/io.h> #include <linux/interrupt.h> -#include <linux/ioport.h> -#include <linux/timex.h> -#include <linux/slab.h> -#include <linux/random.h> -#include <linux/delay.h> -#include <linux/bitops.h> +#include <linux/irq.h> -#include <asm/bootinfo.h> -#include <asm/io.h> #include <asm/mipsregs.h> -#include <asm/system.h> #include <asm/mach-au1x00/au1000.h> #ifdef CONFIG_MIPS_PB1000 #include <asm/mach-pb1x00/pb1000.h> #endif -#undef DEBUG_IRQ -#ifdef DEBUG_IRQ -/* note: prints function name for you */ -#define DPRINTK(fmt, args...) printk("%s: " fmt, __FUNCTION__ , ## args) -#else -#define DPRINTK(fmt, args...) -#endif - #define EXT_INTC0_REQ0 2 /* IP 2 */ #define EXT_INTC0_REQ1 3 /* IP 3 */ #define EXT_INTC1_REQ0 4 /* IP 4 */ @@ -69,16 +48,98 @@ void (*board_init_irq)(void); static DEFINE_SPINLOCK(irq_lock); +#ifdef CONFIG_PM + +/* + * Save/restore the interrupt controller state. + * Called from the save/restore core registers as part of the + * au_sleep function in power.c.....maybe I should just pm_register() + * them instead? + */ +static unsigned int sleep_intctl_config0[2]; +static unsigned int sleep_intctl_config1[2]; +static unsigned int sleep_intctl_config2[2]; +static unsigned int sleep_intctl_src[2]; +static unsigned int sleep_intctl_assign[2]; +static unsigned int sleep_intctl_wake[2]; +static unsigned int sleep_intctl_mask[2]; + +void save_au1xxx_intctl(void) +{ + sleep_intctl_config0[0] = au_readl(IC0_CFG0RD); + sleep_intctl_config1[0] = au_readl(IC0_CFG1RD); + sleep_intctl_config2[0] = au_readl(IC0_CFG2RD); + sleep_intctl_src[0] = au_readl(IC0_SRCRD); + sleep_intctl_assign[0] = au_readl(IC0_ASSIGNRD); + sleep_intctl_wake[0] = au_readl(IC0_WAKERD); + sleep_intctl_mask[0] = au_readl(IC0_MASKRD); + + sleep_intctl_config0[1] = au_readl(IC1_CFG0RD); + sleep_intctl_config1[1] = au_readl(IC1_CFG1RD); + sleep_intctl_config2[1] = au_readl(IC1_CFG2RD); + sleep_intctl_src[1] = au_readl(IC1_SRCRD); + sleep_intctl_assign[1] = au_readl(IC1_ASSIGNRD); + sleep_intctl_wake[1] = au_readl(IC1_WAKERD); + sleep_intctl_mask[1] = au_readl(IC1_MASKRD); +} + +/* + * For most restore operations, we clear the entire register and + * then set the bits we found during the save. + */ +void restore_au1xxx_intctl(void) +{ + au_writel(0xffffffff, IC0_MASKCLR); au_sync(); + + au_writel(0xffffffff, IC0_CFG0CLR); au_sync(); + au_writel(sleep_intctl_config0[0], IC0_CFG0SET); au_sync(); + au_writel(0xffffffff, IC0_CFG1CLR); au_sync(); + au_writel(sleep_intctl_config1[0], IC0_CFG1SET); au_sync(); + au_writel(0xffffffff, IC0_CFG2CLR); au_sync(); + au_writel(sleep_intctl_config2[0], IC0_CFG2SET); au_sync(); + au_writel(0xffffffff, IC0_SRCCLR); au_sync(); + au_writel(sleep_intctl_src[0], IC0_SRCSET); au_sync(); + au_writel(0xffffffff, IC0_ASSIGNCLR); au_sync(); + au_writel(sleep_intctl_assign[0], IC0_ASSIGNSET); au_sync(); + au_writel(0xffffffff, IC0_WAKECLR); au_sync(); + au_writel(sleep_intctl_wake[0], IC0_WAKESET); au_sync(); + au_writel(0xffffffff, IC0_RISINGCLR); au_sync(); + au_writel(0xffffffff, IC0_FALLINGCLR); au_sync(); + au_writel(0x00000000, IC0_TESTBIT); au_sync(); + + au_writel(0xffffffff, IC1_MASKCLR); au_sync(); + + au_writel(0xffffffff, IC1_CFG0CLR); au_sync(); + au_writel(sleep_intctl_config0[1], IC1_CFG0SET); au_sync(); + au_writel(0xffffffff, IC1_CFG1CLR); au_sync(); + au_writel(sleep_intctl_config1[1], IC1_CFG1SET); au_sync(); + au_writel(0xffffffff, IC1_CFG2CLR); au_sync(); + au_writel(sleep_intctl_config2[1], IC1_CFG2SET); au_sync(); + au_writel(0xffffffff, IC1_SRCCLR); au_sync(); + au_writel(sleep_intctl_src[1], IC1_SRCSET); au_sync(); + au_writel(0xffffffff, IC1_ASSIGNCLR); au_sync(); + au_writel(sleep_intctl_assign[1], IC1_ASSIGNSET); au_sync(); + au_writel(0xffffffff, IC1_WAKECLR); au_sync(); + au_writel(sleep_intctl_wake[1], IC1_WAKESET); au_sync(); + au_writel(0xffffffff, IC1_RISINGCLR); au_sync(); + au_writel(0xffffffff, IC1_FALLINGCLR); au_sync(); + au_writel(0x00000000, IC1_TESTBIT); au_sync(); + + au_writel(sleep_intctl_mask[1], IC1_MASKSET); au_sync(); + + au_writel(sleep_intctl_mask[0], IC0_MASKSET); au_sync(); +} +#endif /* CONFIG_PM */ + inline void local_enable_irq(unsigned int irq_nr) { if (irq_nr > AU1000_LAST_INTC0_INT) { - au_writel(1<<(irq_nr-32), IC1_MASKSET); - au_writel(1<<(irq_nr-32), IC1_WAKESET); - } - else { - au_writel(1<<irq_nr, IC0_MASKSET); - au_writel(1<<irq_nr, IC0_WAKESET); + au_writel(1 << (irq_nr - 32), IC1_MASKSET); + au_writel(1 << (irq_nr - 32), IC1_WAKESET); + } else { + au_writel(1 << irq_nr, IC0_MASKSET); + au_writel(1 << irq_nr, IC0_WAKESET); } au_sync(); } @@ -87,12 +148,11 @@ inline void local_enable_irq(unsigned int irq_nr) inline void local_disable_irq(unsigned int irq_nr) { if (irq_nr > AU1000_LAST_INTC0_INT) { - au_writel(1<<(irq_nr-32), IC1_MASKCLR); - au_writel(1<<(irq_nr-32), IC1_WAKECLR); - } - else { - au_writel(1<<irq_nr, IC0_MASKCLR); - au_writel(1<<irq_nr, IC0_WAKECLR); + au_writel(1 << (irq_nr - 32), IC1_MASKCLR); + au_writel(1 << (irq_nr - 32), IC1_WAKECLR); + } else { + au_writel(1 << irq_nr, IC0_MASKCLR); + au_writel(1 << irq_nr, IC0_WAKECLR); } au_sync(); } @@ -101,12 +161,11 @@ inline void local_disable_irq(unsigned int irq_nr) static inline void mask_and_ack_rise_edge_irq(unsigned int irq_nr) { if (irq_nr > AU1000_LAST_INTC0_INT) { - au_writel(1<<(irq_nr-32), IC1_RISINGCLR); - au_writel(1<<(irq_nr-32), IC1_MASKCLR); - } - else { - au_writel(1<<irq_nr, IC0_RISINGCLR); - au_writel(1<<irq_nr, IC0_MASKCLR); + au_writel(1 << (irq_nr - 32), IC1_RISINGCLR); + au_writel(1 << (irq_nr - 32), IC1_MASKCLR); + } else { + au_writel(1 << irq_nr, IC0_RISINGCLR); + au_writel(1 << irq_nr, IC0_MASKCLR); } au_sync(); } @@ -115,12 +174,11 @@ static inline void mask_and_ack_rise_edge_irq(unsigned int irq_nr) static inline void mask_and_ack_fall_edge_irq(unsigned int irq_nr) { if (irq_nr > AU1000_LAST_INTC0_INT) { - au_writel(1<<(irq_nr-32), IC1_FALLINGCLR); - au_writel(1<<(irq_nr-32), IC1_MASKCLR); - } - else { - au_writel(1<<irq_nr, IC0_FALLINGCLR); - au_writel(1<<irq_nr, IC0_MASKCLR); + au_writel(1 << (irq_nr - 32), IC1_FALLINGCLR); + au_writel(1 << (irq_nr - 32), IC1_MASKCLR); + } else { + au_writel(1 << irq_nr, IC0_FALLINGCLR); + au_writel(1 << irq_nr, IC0_MASKCLR); } au_sync(); } @@ -132,14 +190,13 @@ static inline void mask_and_ack_either_edge_irq(unsigned int irq_nr) * both edges at once, or if we do, that we don't care. */ if (irq_nr > AU1000_LAST_INTC0_INT) { - au_writel(1<<(irq_nr-32), IC1_FALLINGCLR); - au_writel(1<<(irq_nr-32), IC1_RISINGCLR); - au_writel(1<<(irq_nr-32), IC1_MASKCLR); - } - else { - au_writel(1<<irq_nr, IC0_FALLINGCLR); - au_writel(1<<irq_nr, IC0_RISINGCLR); - au_writel(1<<irq_nr, IC0_MASKCLR); + au_writel(1 << (irq_nr - 32), IC1_FALLINGCLR); + au_writel(1 << (irq_nr - 32), IC1_RISINGCLR); + au_writel(1 << (irq_nr - 32), IC1_MASKCLR); + } else { + au_writel(1 << irq_nr, IC0_FALLINGCLR); + au_writel(1 << irq_nr, IC0_RISINGCLR); + au_writel(1 << irq_nr, IC0_MASKCLR); } au_sync(); } @@ -162,9 +219,9 @@ static inline void mask_and_ack_level_irq(unsigned int irq_nr) static void end_irq(unsigned int irq_nr) { - if (!(irq_desc[irq_nr].status & (IRQ_DISABLED|IRQ_INPROGRESS))) { + if (!(irq_desc[irq_nr].status & (IRQ_DISABLED | IRQ_INPROGRESS))) local_enable_irq(irq_nr); - } + #if defined(CONFIG_MIPS_PB1000) if (irq_nr == AU1000_GPIO_15) { au_writel(0x4000, PB1000_MDR); /* enable int */ @@ -181,15 +238,12 @@ unsigned long save_local_and_disable(int controller) spin_lock_irqsave(&irq_lock, flags); if (controller) { mask = au_readl(IC1_MASKSET); - for (i=32; i<64; i++) { + for (i = 32; i < 64; i++) local_disable_irq(i); - } - } - else { + } else { mask = au_readl(IC0_MASKSET); - for (i=0; i<32; i++) { + for (i = 0; i < 32; i++) local_disable_irq(i); - } } spin_unlock_irqrestore(&irq_lock, flags); @@ -202,10 +256,10 @@ void restore_local_and_enable(int controller, unsigned long mask) unsigned long flags, new_mask; spin_lock_irqsave(&irq_lock, flags); - for (i=0; i<32; i++) { - if (mask & (1<<i)) { + for (i = 0; i < 32; i++) { + if (mask & (1 << i)) { if (controller) - local_enable_irq(i+32); + local_enable_irq(i + 32); else local_enable_irq(i); } @@ -220,39 +274,39 @@ void restore_local_and_enable(int controller, unsigned long mask) static struct irq_chip rise_edge_irq_type = { - .name = "Au1000 Rise Edge", - .ack = mask_and_ack_rise_edge_irq, - .mask = local_disable_irq, - .mask_ack = mask_and_ack_rise_edge_irq, - .unmask = local_enable_irq, - .end = end_irq, + .name = "Au1000 Rise Edge", + .ack = mask_and_ack_rise_edge_irq, + .mask = local_disable_irq, + .mask_ack = mask_and_ack_rise_edge_irq, + .unmask = local_enable_irq, + .end = end_irq, }; static struct irq_chip fall_edge_irq_type = { - .name = "Au1000 Fall Edge", - .ack = mask_and_ack_fall_edge_irq, - .mask = local_disable_irq, - .mask_ack = mask_and_ack_fall_edge_irq, - .unmask = local_enable_irq, - .end = end_irq, + .name = "Au1000 Fall Edge", + .ack = mask_and_ack_fall_edge_irq, + .mask = local_disable_irq, + .mask_ack = mask_and_ack_fall_edge_irq, + .unmask = local_enable_irq, + .end = end_irq, }; static struct irq_chip either_edge_irq_type = { - .name = "Au1000 Rise or Fall Edge", - .ack = mask_and_ack_either_edge_irq, - .mask = local_disable_irq, - .mask_ack = mask_and_ack_either_edge_irq, - .unmask = local_enable_irq, - .end = end_irq, + .name = "Au1000 Rise or Fall Edge", + .ack = mask_and_ack_either_edge_irq, + .mask = local_disable_irq, + .mask_ack = mask_and_ack_either_edge_irq, + .unmask = local_enable_irq, + .end = end_irq, }; static struct irq_chip level_irq_type = { - .name = "Au1000 Level", - .ack = mask_and_ack_level_irq, - .mask = local_disable_irq, - .mask_ack = mask_and_ack_level_irq, - .unmask = local_enable_irq, - .end = end_irq, + .name = "Au1000 Level", + .ack = mask_and_ack_level_irq, + .mask = local_disable_irq, + .mask_ack = mask_and_ack_level_irq, + .unmask = local_enable_irq, + .end = end_irq, }; #ifdef CONFIG_PM @@ -263,7 +317,8 @@ void startup_match20_interrupt(irq_handler_t handler) static struct irqaction action; memset(&action, 0, sizeof(struct irqaction)); - /* This is a big problem.... since we didn't use request_irq + /* + * This is a big problem.... since we didn't use request_irq * when kernel/irq.c calls probe_irq_xxx this interrupt will * be probed for usage. This will end up disabling the device :( * Give it a bogus "action" pointer -- this will keep it from @@ -292,173 +347,112 @@ static void setup_local_irq(unsigned int irq_nr, int type, int int_req) /* Config2[n], Config1[n], Config0[n] */ if (irq_nr > AU1000_LAST_INTC0_INT) { switch (type) { - case INTC_INT_RISE_EDGE: /* 0:0:1 */ - au_writel(1<<(irq_nr-32), IC1_CFG2CLR); - au_writel(1<<(irq_nr-32), IC1_CFG1CLR); - au_writel(1<<(irq_nr-32), IC1_CFG0SET); - set_irq_chip(irq_nr, &rise_edge_irq_type); - break; - case INTC_INT_FALL_EDGE: /* 0:1:0 */ - au_writel(1<<(irq_nr-32), IC1_CFG2CLR); - au_writel(1<<(irq_nr-32), IC1_CFG1SET); - au_writel(1<<(irq_nr-32), IC1_CFG0CLR); - set_irq_chip(irq_nr, &fall_edge_irq_type); - break; - case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */ - au_writel(1<<(irq_nr-32), IC1_CFG2CLR); - au_writel(1<<(irq_nr-32), IC1_CFG1SET); - au_writel(1<<(irq_nr-32), IC1_CFG0SET); - set_irq_chip(irq_nr, &either_edge_irq_type); - break; - case INTC_INT_HIGH_LEVEL: /* 1:0:1 */ - au_writel(1<<(irq_nr-32), IC1_CFG2SET); - au_writel(1<<(irq_nr-32), IC1_CFG1CLR); - au_writel(1<<(irq_nr-32), IC1_CFG0SET); - set_irq_chip(irq_nr, &level_irq_type); - break; - case INTC_INT_LOW_LEVEL: /* 1:1:0 */ - au_writel(1<<(irq_nr-32), IC1_CFG2SET); - au_writel(1<<(irq_nr-32), IC1_CFG1SET); - au_writel(1<<(irq_nr-32), IC1_CFG0CLR); - set_irq_chip(irq_nr, &level_irq_type); - break; - case INTC_INT_DISABLED: /* 0:0:0 */ - au_writel(1<<(irq_nr-32), IC1_CFG0CLR); - au_writel(1<<(irq_nr-32), IC1_CFG1CLR); - au_writel(1<<(irq_nr-32), IC1_CFG2CLR); - break; - default: /* disable the interrupt */ - printk("unexpected int type %d (irq %d)\n", type, irq_nr); - au_writel(1<<(irq_nr-32), IC1_CFG0CLR); - au_writel(1<<(irq_nr-32), IC1_CFG1CLR); - au_writel(1<<(irq_nr-32), IC1_CFG2CLR); - return; + case INTC_INT_RISE_EDGE: /* 0:0:1 */ + au_writel(1 << (irq_nr - 32), IC1_CFG2CLR); + au_writel(1 << (irq_nr - 32), IC1_CFG1CLR); + au_writel(1 << (irq_nr - 32), IC1_CFG0SET); + set_irq_chip(irq_nr, &rise_edge_irq_type); + break; + case INTC_INT_FALL_EDGE: /* 0:1:0 */ + au_writel(1 << (irq_nr - 32), IC1_CFG2CLR); + au_writel(1 << (irq_nr - 32), IC1_CFG1SET); + au_writel(1 << (irq_nr - 32), IC1_CFG0CLR); + set_irq_chip(irq_nr, &fall_edge_irq_type); + break; + case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */ + au_writel(1 << (irq_nr - 32), IC1_CFG2CLR); + au_writel(1 << (irq_nr - 32), IC1_CFG1SET); + au_writel(1 << (irq_nr - 32), IC1_CFG0SET); + set_irq_chip(irq_nr, &either_edge_irq_type); + break; + case INTC_INT_HIGH_LEVEL: /* 1:0:1 */ + au_writel(1 << (irq_nr - 32), IC1_CFG2SET); + au_writel(1 << (irq_nr - 32), IC1_CFG1CLR); + au_writel(1 << (irq_nr - 32), IC1_CFG0SET); + set_irq_chip(irq_nr, &level_irq_type); + break; + case INTC_INT_LOW_LEVEL: /* 1:1:0 */ + au_writel(1 << (irq_nr - 32), IC1_CFG2SET); + au_writel(1 << (irq_nr - 32), IC1_CFG1SET); + au_writel(1 << (irq_nr - 32), IC1_CFG0CLR); + set_irq_chip(irq_nr, &level_irq_type); + break; + case INTC_INT_DISABLED: /* 0:0:0 */ + au_writel(1 << (irq_nr - 32), IC1_CFG0CLR); + au_writel(1 << (irq_nr - 32), IC1_CFG1CLR); + au_writel(1 << (irq_nr - 32), IC1_CFG2CLR); + break; + default: /* disable the interrupt */ + printk(KERN_WARNING "unexpected int type %d (irq %d)\n", + type, irq_nr); + au_writel(1 << (irq_nr - 32), IC1_CFG0CLR); + au_writel(1 << (irq_nr - 32), IC1_CFG1CLR); + au_writel(1 << (irq_nr - 32), IC1_CFG2CLR); + return; } if (int_req) /* assign to interrupt request 1 */ - au_writel(1<<(irq_nr-32), IC1_ASSIGNCLR); + au_writel(1 << (irq_nr - 32), IC1_ASSIGNCLR); else /* assign to interrupt request 0 */ - au_writel(1<<(irq_nr-32), IC1_ASSIGNSET); - au_writel(1<<(irq_nr-32), IC1_SRCSET); - au_writel(1<<(irq_nr-32), IC1_MASKCLR); - au_writel(1<<(irq_nr-32), IC1_WAKECLR); - } - else { + au_writel(1 << (irq_nr - 32), IC1_ASSIGNSET); + au_writel(1 << (irq_nr - 32), IC1_SRCSET); + au_writel(1 << (irq_nr - 32), IC1_MASKCLR); + au_writel(1 << (irq_nr - 32), IC1_WAKECLR); + } else { switch (type) { - case INTC_INT_RISE_EDGE: /* 0:0:1 */ - au_writel(1<<irq_nr, IC0_CFG2CLR); - au_writel(1<<irq_nr, IC0_CFG1CLR); - au_writel(1<<irq_nr, IC0_CFG0SET); - set_irq_chip(irq_nr, &rise_edge_irq_type); - break; - case INTC_INT_FALL_EDGE: /* 0:1:0 */ - au_writel(1<<irq_nr, IC0_CFG2CLR); - au_writel(1<<irq_nr, IC0_CFG1SET); - au_writel(1<<irq_nr, IC0_CFG0CLR); - set_irq_chip(irq_nr, &fall_edge_irq_type); - break; - case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */ - au_writel(1<<irq_nr, IC0_CFG2CLR); - au_writel(1<<irq_nr, IC0_CFG1SET); - au_writel(1<<irq_nr, IC0_CFG0SET); - set_irq_chip(irq_nr, &either_edge_irq_type); - break; - case INTC_INT_HIGH_LEVEL: /* 1:0:1 */ - au_writel(1<<irq_nr, IC0_CFG2SET); - au_writel(1<<irq_nr, IC0_CFG1CLR); - au_writel(1<<irq_nr, IC0_CFG0SET); - set_irq_chip(irq_nr, &level_irq_type); - break; - case INTC_INT_LOW_LEVEL: /* 1:1:0 */ - au_writel(1<<irq_nr, IC0_CFG2SET); - au_writel(1<<irq_nr, IC0_CFG1SET); - au_writel(1<<irq_nr, IC0_CFG0CLR); - set_irq_chip(irq_nr, &level_irq_type); - break; - case INTC_INT_DISABLED: /* 0:0:0 */ - au_writel(1<<irq_nr, IC0_CFG0CLR); - au_writel(1<<irq_nr, IC0_CFG1CLR); - au_writel(1<<irq_nr, IC0_CFG2CLR); - break; - default: /* disable the interrupt */ - printk("unexpected int type %d (irq %d)\n", type, irq_nr); - au_writel(1<<irq_nr, IC0_CFG0CLR); - au_writel(1<<irq_nr, IC0_CFG1CLR); - au_writel(1<<irq_nr, IC0_CFG2CLR); - return; + case INTC_INT_RISE_EDGE: /* 0:0:1 */ + au_writel(1 << irq_nr, IC0_CFG2CLR); + au_writel(1 << irq_nr, IC0_CFG1CLR); + au_writel(1 << irq_nr, IC0_CFG0SET); + set_irq_chip(irq_nr, &rise_edge_irq_type); + break; + case INTC_INT_FALL_EDGE: /* 0:1:0 */ + au_writel(1 << irq_nr, IC0_CFG2CLR); + au_writel(1 << irq_nr, IC0_CFG1SET); + au_writel(1 << irq_nr, IC0_CFG0CLR); + set_irq_chip(irq_nr, &fall_edge_irq_type); + break; + case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */ + au_writel(1 << irq_nr, IC0_CFG2CLR); + au_writel(1 << irq_nr, IC0_CFG1SET); + au_writel(1 << irq_nr, IC0_CFG0SET); + set_irq_chip(irq_nr, &either_edge_irq_type); + break; + case INTC_INT_HIGH_LEVEL: /* 1:0:1 */ + au_writel(1 << irq_nr, IC0_CFG2SET); + au_writel(1 << irq_nr, IC0_CFG1CLR); + au_writel(1 << irq_nr, IC0_CFG0SET); + set_irq_chip(irq_nr, &level_irq_type); + break; + case INTC_INT_LOW_LEVEL: /* 1:1:0 */ + au_writel(1 << irq_nr, IC0_CFG2SET); + au_writel(1 << irq_nr, IC0_CFG1SET); + au_writel(1 << irq_nr, IC0_CFG0CLR); + set_irq_chip(irq_nr, &level_irq_type); + break; + case INTC_INT_DISABLED: /* 0:0:0 */ + au_writel(1 << irq_nr, IC0_CFG0CLR); + au_writel(1 << irq_nr, IC0_CFG1CLR); + au_writel(1 << irq_nr, IC0_CFG2CLR); + break; + default: /* disable the interrupt */ + printk(KERN_WARNING "unexpected int type %d (irq %d)\n", + type, irq_nr); + au_writel(1 << irq_nr, IC0_CFG0CLR); + au_writel(1 << irq_nr, IC0_CFG1CLR); + au_writel(1 << irq_nr, IC0_CFG2CLR); + return; } if (int_req) /* assign to interrupt request 1 */ - au_writel(1<<irq_nr, IC0_ASSIGNCLR); + au_writel(1 << irq_nr, IC0_ASSIGNCLR); else /* assign to interrupt request 0 */ - au_writel(1<<irq_nr, IC0_ASSIGNSET); - au_writel(1<<irq_nr, IC0_SRCSET); - au_writel(1<<irq_nr, IC0_MASKCLR); - au_writel(1<<irq_nr, IC0_WAKECLR); + au_writel(1 << irq_nr, IC0_ASSIGNSET); + au_writel(1 << irq_nr, IC0_SRCSET); + au_writel(1 << irq_nr, IC0_MASKCLR); + au_writel(1 << irq_nr, IC0_WAKECLR); } au_sync(); } - -void __init arch_init_irq(void) -{ - int i; - unsigned long cp0_status; - au1xxx_irq_map_t *imp; - extern au1xxx_irq_map_t au1xxx_irq_map[]; - extern au1xxx_irq_map_t au1xxx_ic0_map[]; - extern int au1xxx_nr_irqs; - extern int au1xxx_ic0_nr_irqs; - - cp0_status = read_c0_status(); - - /* Initialize interrupt controllers to a safe state. - */ - au_writel(0xffffffff, IC0_CFG0CLR); - au_writel(0xffffffff, IC0_CFG1CLR); - au_writel(0xffffffff, IC0_CFG2CLR); - au_writel(0xffffffff, IC0_MASKCLR); - au_writel(0xffffffff, IC0_ASSIGNSET); - au_writel(0xffffffff, IC0_WAKECLR); - au_writel(0xffffffff, IC0_SRCSET); - au_writel(0xffffffff, IC0_FALLINGCLR); - au_writel(0xffffffff, IC0_RISINGCLR); - au_writel(0x00000000, IC0_TESTBIT); - - au_writel(0xffffffff, IC1_CFG0CLR); - au_writel(0xffffffff, IC1_CFG1CLR); - au_writel(0xffffffff, IC1_CFG2CLR); - au_writel(0xffffffff, IC1_MASKCLR); - au_writel(0xffffffff, IC1_ASSIGNSET); - au_writel(0xffffffff, IC1_WAKECLR); - au_writel(0xffffffff, IC1_SRCSET); - au_writel(0xffffffff, IC1_FALLINGCLR); - au_writel(0xffffffff, IC1_RISINGCLR); - au_writel(0x00000000, IC1_TESTBIT); - - /* Initialize IC0, which is fixed per processor. - */ - imp = au1xxx_ic0_map; - for (i=0; i<au1xxx_ic0_nr_irqs; i++) { - setup_local_irq(imp->im_irq, imp->im_type, imp->im_request); - imp++; - } - - /* Now set up the irq mapping for the board. - */ - imp = au1xxx_irq_map; - for (i=0; i<au1xxx_nr_irqs; i++) { - setup_local_irq(imp->im_irq, imp->im_type, imp->im_request); - imp++; - } - - set_c0_status(ALLINTS); - - /* Board specific IRQ initialization. - */ - if (board_init_irq) - (*board_init_irq)(); -} - - /* * Interrupts are nested. Even if an interrupt handler is registered * as "fast", we might get another interrupt before we return from @@ -468,26 +462,27 @@ void __init arch_init_irq(void) static void intc0_req0_irqdispatch(void) { int irq = 0; - static unsigned long intc0_req0 = 0; + static unsigned long intc0_req0; intc0_req0 |= au_readl(IC0_REQ0INT); if (!intc0_req0) return; + #ifdef AU1000_USB_DEV_REQ_INT /* * Because of the tight timing of SETUP token to reply * transactions, the USB devices-side packet complete * interrupt needs the highest priority. */ - if ((intc0_req0 & (1<<AU1000_USB_DEV_REQ_INT))) { - intc0_req0 &= ~(1<<AU1000_USB_DEV_REQ_INT); + if ((intc0_req0 & (1 << AU1000_USB_DEV_REQ_INT))) { + intc0_req0 &= ~(1 << AU1000_USB_DEV_REQ_INT); do_IRQ(AU1000_USB_DEV_REQ_INT); return; } #endif - irq = au_ffs(intc0_req0) - 1; - intc0_req0 &= ~(1<<irq); + irq = ffs(intc0_req0); + intc0_req0 &= ~(1 << irq); do_IRQ(irq); } @@ -495,15 +490,15 @@ static void intc0_req0_irqdispatch(void) static void intc0_req1_irqdispatch(void) { int irq = 0; - static unsigned long intc0_req1 = 0; + static unsigned long intc0_req1; intc0_req1 |= au_readl(IC0_REQ1INT); if (!intc0_req1) return; - irq = au_ffs(intc0_req1) - 1; - intc0_req1 &= ~(1<<irq); + irq = ffs(intc0_req1); + intc0_req1 &= ~(1 << irq); do_IRQ(irq); } @@ -515,15 +510,15 @@ static void intc0_req1_irqdispatch(void) static void intc1_req0_irqdispatch(void) { int irq = 0; - static unsigned long intc1_req0 = 0; + static unsigned long intc1_req0; intc1_req0 |= au_readl(IC1_REQ0INT); if (!intc1_req0) return; - irq = au_ffs(intc1_req0) - 1; - intc1_req0 &= ~(1<<irq); + irq = ffs(intc1_req0); + intc1_req0 &= ~(1 << irq); irq += 32; do_IRQ(irq); } @@ -532,102 +527,19 @@ static void intc1_req0_irqdispatch(void) static void intc1_req1_irqdispatch(void) { int irq = 0; - static unsigned long intc1_req1 = 0; + static unsigned long intc1_req1; intc1_req1 |= au_readl(IC1_REQ1INT); if (!intc1_req1) return; - irq = au_ffs(intc1_req1) - 1; - intc1_req1 &= ~(1<<irq); + irq = ffs(intc1_req1); + intc1_req1 &= ~(1 << irq); irq += 32; do_IRQ(irq); } -#ifdef CONFIG_PM - -/* Save/restore the interrupt controller state. - * Called from the save/restore core registers as part of the - * au_sleep function in power.c.....maybe I should just pm_register() - * them instead? - */ -static unsigned int sleep_intctl_config0[2]; -static unsigned int sleep_intctl_config1[2]; -static unsigned int sleep_intctl_config2[2]; -static unsigned int sleep_intctl_src[2]; -static unsigned int sleep_intctl_assign[2]; -static unsigned int sleep_intctl_wake[2]; -static unsigned int sleep_intctl_mask[2]; - -void -save_au1xxx_intctl(void) -{ - sleep_intctl_config0[0] = au_readl(IC0_CFG0RD); - sleep_intctl_config1[0] = au_readl(IC0_CFG1RD); - sleep_intctl_config2[0] = au_readl(IC0_CFG2RD); - sleep_intctl_src[0] = au_readl(IC0_SRCRD); - sleep_intctl_assign[0] = au_readl(IC0_ASSIGNRD); - sleep_intctl_wake[0] = au_readl(IC0_WAKERD); - sleep_intctl_mask[0] = au_readl(IC0_MASKRD); - - sleep_intctl_config0[1] = au_readl(IC1_CFG0RD); - sleep_intctl_config1[1] = au_readl(IC1_CFG1RD); - sleep_intctl_config2[1] = au_readl(IC1_CFG2RD); - sleep_intctl_src[1] = au_readl(IC1_SRCRD); - sleep_intctl_assign[1] = au_readl(IC1_ASSIGNRD); - sleep_intctl_wake[1] = au_readl(IC1_WAKERD); - sleep_intctl_mask[1] = au_readl(IC1_MASKRD); -} - -/* For most restore operations, we clear the entire register and - * then set the bits we found during the save. - */ -void -restore_au1xxx_intctl(void) -{ - au_writel(0xffffffff, IC0_MASKCLR); au_sync(); - - au_writel(0xffffffff, IC0_CFG0CLR); au_sync(); - au_writel(sleep_intctl_config0[0], IC0_CFG0SET); au_sync(); - au_writel(0xffffffff, IC0_CFG1CLR); au_sync(); - au_writel(sleep_intctl_config1[0], IC0_CFG1SET); au_sync(); - au_writel(0xffffffff, IC0_CFG2CLR); au_sync(); - au_writel(sleep_intctl_config2[0], IC0_CFG2SET); au_sync(); - au_writel(0xffffffff, IC0_SRCCLR); au_sync(); - au_writel(sleep_intctl_src[0], IC0_SRCSET); au_sync(); - au_writel(0xffffffff, IC0_ASSIGNCLR); au_sync(); - au_writel(sleep_intctl_assign[0], IC0_ASSIGNSET); au_sync(); - au_writel(0xffffffff, IC0_WAKECLR); au_sync(); - au_writel(sleep_intctl_wake[0], IC0_WAKESET); au_sync(); - au_writel(0xffffffff, IC0_RISINGCLR); au_sync(); - au_writel(0xffffffff, IC0_FALLINGCLR); au_sync(); - au_writel(0x00000000, IC0_TESTBIT); au_sync(); - - au_writel(0xffffffff, IC1_MASKCLR); au_sync(); - - au_writel(0xffffffff, IC1_CFG0CLR); au_sync(); - au_writel(sleep_intctl_config0[1], IC1_CFG0SET); au_sync(); - au_writel(0xffffffff, IC1_CFG1CLR); au_sync(); - au_writel(sleep_intctl_config1[1], IC1_CFG1SET); au_sync(); - au_writel(0xffffffff, IC1_CFG2CLR); au_sync(); - au_writel(sleep_intctl_config2[1], IC1_CFG2SET); au_sync(); - au_writel(0xffffffff, IC1_SRCCLR); au_sync(); - au_writel(sleep_intctl_src[1], IC1_SRCSET); au_sync(); - au_writel(0xffffffff, IC1_ASSIGNCLR); au_sync(); - au_writel(sleep_intctl_assign[1], IC1_ASSIGNSET); au_sync(); - au_writel(0xffffffff, IC1_WAKECLR); au_sync(); - au_writel(sleep_intctl_wake[1], IC1_WAKESET); au_sync(); - au_writel(0xffffffff, IC1_RISINGCLR); au_sync(); - au_writel(0xffffffff, IC1_FALLINGCLR); au_sync(); - au_writel(0x00000000, IC1_TESTBIT); au_sync(); - - au_writel(sleep_intctl_mask[1], IC1_MASKSET); au_sync(); - - au_writel(sleep_intctl_mask[0], IC0_MASKSET); au_sync(); -} -#endif /* CONFIG_PM */ - asmlinkage void plat_irq_dispatch(void) { unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM; @@ -645,3 +557,63 @@ asmlinkage void plat_irq_dispatch(void) else spurious_interrupt(); } + +void __init arch_init_irq(void) +{ + int i; + unsigned long cp0_status; + struct au1xxx_irqmap *imp; + extern struct au1xxx_irqmap au1xxx_irq_map[]; + extern struct au1xxx_irqmap au1xxx_ic0_map[]; + extern int au1xxx_nr_irqs; + extern int au1xxx_ic0_nr_irqs; + + cp0_status = read_c0_status(); + + /* Initialize interrupt controllers to a safe state. + */ + au_writel(0xffffffff, IC0_CFG0CLR); + au_writel(0xffffffff, IC0_CFG1CLR); + au_writel(0xffffffff, IC0_CFG2CLR); + au_writel(0xffffffff, IC0_MASKCLR); + au_writel(0xffffffff, IC0_ASSIGNSET); + au_writel(0xffffffff, IC0_WAKECLR); + au_writel(0xffffffff, IC0_SRCSET); + au_writel(0xffffffff, IC0_FALLINGCLR); + au_writel(0xffffffff, IC0_RISINGCLR); + au_writel(0x00000000, IC0_TESTBIT); + + au_writel(0xffffffff, IC1_CFG0CLR); + au_writel(0xffffffff, IC1_CFG1CLR); + au_writel(0xffffffff, IC1_CFG2CLR); + au_writel(0xffffffff, IC1_MASKCLR); + au_writel(0xffffffff, IC1_ASSIGNSET); + au_writel(0xffffffff, IC1_WAKECLR); + au_writel(0xffffffff, IC1_SRCSET); + au_writel(0xffffffff, IC1_FALLINGCLR); + au_writel(0xffffffff, IC1_RISINGCLR); + au_writel(0x00000000, IC1_TESTBIT); + + /* Initialize IC0, which is fixed per processor. + */ + imp = au1xxx_ic0_map; + for (i = 0; i < au1xxx_ic0_nr_irqs; i++) { + setup_local_irq(imp->im_irq, imp->im_type, imp->im_request); + imp++; + } + + /* Now set up the irq mapping for the board. + */ + imp = au1xxx_irq_map; + for (i = 0; i < au1xxx_nr_irqs; i++) { + setup_local_irq(imp->im_irq, imp->im_type, imp->im_request); + imp++; + } + + set_c0_status(ALLINTS); + + /* Board specific IRQ initialization. + */ + if (board_init_irq) + (*board_init_irq)(); +} |