diff options
Diffstat (limited to 'arch/mips/tx4927/common')
-rw-r--r-- | arch/mips/tx4927/common/Makefile | 2 | ||||
-rw-r--r-- | arch/mips/tx4927/common/tx4927_irq.c | 395 |
2 files changed, 12 insertions, 385 deletions
diff --git a/arch/mips/tx4927/common/Makefile b/arch/mips/tx4927/common/Makefile index 9cb9535..1837578 100644 --- a/arch/mips/tx4927/common/Makefile +++ b/arch/mips/tx4927/common/Makefile @@ -10,3 +10,5 @@ obj-y += tx4927_prom.o tx4927_setup.o tx4927_irq.o obj-$(CONFIG_TOSHIBA_FPCIB0) += smsc_fdc37m81x.o obj-$(CONFIG_KGDB) += tx4927_dbgio.o + +EXTRA_CFLAGS += -Werror diff --git a/arch/mips/tx4927/common/tx4927_irq.c b/arch/mips/tx4927/common/tx4927_irq.c index 00b0b97..0aabd57 100644 --- a/arch/mips/tx4927/common/tx4927_irq.c +++ b/arch/mips/tx4927/common/tx4927_irq.c @@ -23,398 +23,20 @@ * 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/init.h> -#include <linux/kernel_stat.h> -#include <linux/module.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/types.h> #include <linux/interrupt.h> -#include <linux/ioport.h> -#include <linux/timex.h> -#include <linux/slab.h> -#include <linux/random.h> -#include <linux/irq.h> -#include <linux/bitops.h> -#include <asm/bootinfo.h> -#include <asm/io.h> -#include <asm/irq.h> +#include <asm/irq_cpu.h> #include <asm/mipsregs.h> -#include <asm/system.h> #include <asm/tx4927/tx4927.h> #ifdef CONFIG_TOSHIBA_RBTX4927 #include <asm/tx4927/toshiba_rbtx4927.h> #endif -/* - * DEBUG - */ - -#undef TX4927_IRQ_DEBUG - -#ifdef TX4927_IRQ_DEBUG -#define TX4927_IRQ_NONE 0x00000000 - -#define TX4927_IRQ_INFO ( 1 << 0 ) -#define TX4927_IRQ_WARN ( 1 << 1 ) -#define TX4927_IRQ_EROR ( 1 << 2 ) - -#define TX4927_IRQ_INIT ( 1 << 5 ) -#define TX4927_IRQ_NEST1 ( 1 << 6 ) -#define TX4927_IRQ_NEST2 ( 1 << 7 ) -#define TX4927_IRQ_NEST3 ( 1 << 8 ) -#define TX4927_IRQ_NEST4 ( 1 << 9 ) - -#define TX4927_IRQ_CP0_INIT ( 1 << 10 ) -#define TX4927_IRQ_CP0_ENABLE ( 1 << 13 ) -#define TX4927_IRQ_CP0_DISABLE ( 1 << 14 ) - -#define TX4927_IRQ_PIC_INIT ( 1 << 20 ) -#define TX4927_IRQ_PIC_ENABLE ( 1 << 23 ) -#define TX4927_IRQ_PIC_DISABLE ( 1 << 24 ) - -#define TX4927_IRQ_ALL 0xffffffff -#endif - -#ifdef TX4927_IRQ_DEBUG -static const u32 tx4927_irq_debug_flag = (TX4927_IRQ_NONE - | TX4927_IRQ_INFO - | TX4927_IRQ_WARN | TX4927_IRQ_EROR -// | TX4927_IRQ_CP0_INIT -// | TX4927_IRQ_CP0_ENABLE -// | TX4927_IRQ_CP0_ENDIRQ -// | TX4927_IRQ_PIC_INIT -// | TX4927_IRQ_PIC_ENABLE -// | TX4927_IRQ_PIC_DISABLE -// | TX4927_IRQ_INIT -// | TX4927_IRQ_NEST1 -// | TX4927_IRQ_NEST2 -// | TX4927_IRQ_NEST3 -// | TX4927_IRQ_NEST4 - ); -#endif - -#ifdef TX4927_IRQ_DEBUG -#define TX4927_IRQ_DPRINTK(flag,str...) \ - if ( (tx4927_irq_debug_flag) & (flag) ) \ - { \ - char tmp[100]; \ - sprintf( tmp, str ); \ - printk( "%s(%s:%u)::%s", __FUNCTION__, __FILE__, __LINE__, tmp ); \ - } -#else -#define TX4927_IRQ_DPRINTK(flag,str...) -#endif - -/* - * Forwad definitions for all pic's - */ - -static void tx4927_irq_cp0_enable(unsigned int irq); -static void tx4927_irq_cp0_disable(unsigned int irq); - -static void tx4927_irq_pic_enable(unsigned int irq); -static void tx4927_irq_pic_disable(unsigned int irq); - -/* - * Kernel structs for all pic's - */ - -#define TX4927_CP0_NAME "TX4927-CP0" -static struct irq_chip tx4927_irq_cp0_type = { - .name = TX4927_CP0_NAME, - .ack = tx4927_irq_cp0_disable, - .mask = tx4927_irq_cp0_disable, - .mask_ack = tx4927_irq_cp0_disable, - .unmask = tx4927_irq_cp0_enable, -}; - -#define TX4927_PIC_NAME "TX4927-PIC" -static struct irq_chip tx4927_irq_pic_type = { - .name = TX4927_PIC_NAME, - .ack = tx4927_irq_pic_disable, - .mask = tx4927_irq_pic_disable, - .mask_ack = tx4927_irq_pic_disable, - .unmask = tx4927_irq_pic_enable, -}; - -#define TX4927_PIC_ACTION(s) { no_action, 0, CPU_MASK_NONE, s, NULL, NULL } -static struct irqaction tx4927_irq_pic_action = -TX4927_PIC_ACTION(TX4927_PIC_NAME); - -#define CCP0_STATUS 12 -#define CCP0_CAUSE 13 - -/* - * Functions for cp0 - */ - -#define tx4927_irq_cp0_mask(irq) ( 1 << ( irq-TX4927_IRQ_CP0_BEG+8 ) ) - -static void -tx4927_irq_cp0_modify(unsigned cp0_reg, unsigned clr_bits, unsigned set_bits) -{ - unsigned long val = 0; - - switch (cp0_reg) { - case CCP0_STATUS: - val = read_c0_status(); - break; - - case CCP0_CAUSE: - val = read_c0_cause(); - break; - - } - - val &= (~clr_bits); - val |= (set_bits); - - switch (cp0_reg) { - case CCP0_STATUS:{ - write_c0_status(val); - break; - } - case CCP0_CAUSE:{ - write_c0_cause(val); - break; - } - } -} - -static void __init tx4927_irq_cp0_init(void) -{ - int i; - - TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_INIT, "beg=%d end=%d\n", - TX4927_IRQ_CP0_BEG, TX4927_IRQ_CP0_END); - - for (i = TX4927_IRQ_CP0_BEG; i <= TX4927_IRQ_CP0_END; i++) - set_irq_chip_and_handler(i, &tx4927_irq_cp0_type, - handle_level_irq); -} - -static void tx4927_irq_cp0_enable(unsigned int irq) -{ - TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_ENABLE, "irq=%d \n", irq); - - tx4927_irq_cp0_modify(CCP0_STATUS, 0, tx4927_irq_cp0_mask(irq)); -} - -static void tx4927_irq_cp0_disable(unsigned int irq) -{ - TX4927_IRQ_DPRINTK(TX4927_IRQ_CP0_DISABLE, "irq=%d \n", irq); - - tx4927_irq_cp0_modify(CCP0_STATUS, tx4927_irq_cp0_mask(irq), 0); -} - -/* - * Functions for pic - */ -u32 tx4927_irq_pic_addr(int irq) -{ - /* MVMCP -- need to formulize this */ - irq -= TX4927_IRQ_PIC_BEG; - switch (irq) { - case 17: - case 16: - case 1: - case 0: - return (0xff1ff610); - - case 19: - case 18: - case 3: - case 2: - return (0xff1ff614); - - case 21: - case 20: - case 5: - case 4: - return (0xff1ff618); - - case 23: - case 22: - case 7: - case 6: - return (0xff1ff61c); - - case 25: - case 24: - case 9: - case 8: - return (0xff1ff620); - - case 27: - case 26: - case 11: - case 10: - return (0xff1ff624); - - case 29: - case 28: - case 13: - case 12: - return (0xff1ff628); - - case 31: - case 30: - case 15: - case 14: - return (0xff1ff62c); - - } - return (0); -} - -u32 tx4927_irq_pic_mask(int irq) -{ - /* MVMCP -- need to formulize this */ - irq -= TX4927_IRQ_PIC_BEG; - switch (irq) { - case 31: - case 29: - case 27: - case 25: - case 23: - case 21: - case 19: - case 17:{ - return (0x07000000); - } - case 30: - case 28: - case 26: - case 24: - case 22: - case 20: - case 18: - case 16:{ - return (0x00070000); - } - case 15: - case 13: - case 11: - case 9: - case 7: - case 5: - case 3: - case 1:{ - return (0x00000700); - } - case 14: - case 12: - case 10: - case 8: - case 6: - case 4: - case 2: - case 0:{ - return (0x00000007); - } - } - return (0x00000000); -} - -static void tx4927_irq_pic_modify(unsigned pic_reg, unsigned clr_bits, - unsigned set_bits) -{ - unsigned long val = 0; - - val = TX4927_RD(pic_reg); - val &= (~clr_bits); - val |= (set_bits); - TX4927_WR(pic_reg, val); -} - -static void __init tx4927_irq_pic_init(void) -{ - int i; - - TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_INIT, "beg=%d end=%d\n", - TX4927_IRQ_PIC_BEG, TX4927_IRQ_PIC_END); - - for (i = TX4927_IRQ_PIC_BEG; i <= TX4927_IRQ_PIC_END; i++) - set_irq_chip_and_handler(i, &tx4927_irq_pic_type, - handle_level_irq); - - setup_irq(TX4927_IRQ_NEST_PIC_ON_CP0, &tx4927_irq_pic_action); - - TX4927_WR(0xff1ff640, 0x6); /* irq level mask -- only accept hightest */ - TX4927_WR(0xff1ff600, TX4927_RD(0xff1ff600) | 0x1); /* irq enable */ -} - -static void tx4927_irq_pic_enable(unsigned int irq) -{ - TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_ENABLE, "irq=%d\n", irq); - - tx4927_irq_pic_modify(tx4927_irq_pic_addr(irq), 0, - tx4927_irq_pic_mask(irq)); -} - -static void tx4927_irq_pic_disable(unsigned int irq) -{ - TX4927_IRQ_DPRINTK(TX4927_IRQ_PIC_DISABLE, "irq=%d\n", irq); - - tx4927_irq_pic_modify(tx4927_irq_pic_addr(irq), - tx4927_irq_pic_mask(irq), 0); -} - -/* - * Main init functions - */ void __init tx4927_irq_init(void) { - TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "-\n"); - - TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "=Calling tx4927_irq_cp0_init()\n"); - tx4927_irq_cp0_init(); - - TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "=Calling tx4927_irq_pic_init()\n"); - tx4927_irq_pic_init(); - - TX4927_IRQ_DPRINTK(TX4927_IRQ_INIT, "+\n"); -} - -static int tx4927_irq_nested(void) -{ - int sw_irq = 0; - u32 level2; - - TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST1, "-\n"); - - level2 = TX4927_RD(0xff1ff6a0); - TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST2, "=level2a=0x%x\n", level2); - - if ((level2 & 0x10000) == 0) { - level2 &= 0x1f; - TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST3, "=level2b=0x%x\n", level2); - - sw_irq = TX4927_IRQ_PIC_BEG + level2; - TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST3, "=sw_irq=%d\n", sw_irq); - - if (sw_irq == 27) { - TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST4, "=irq-%d\n", - sw_irq); - -#ifdef CONFIG_TOSHIBA_RBTX4927 - { - sw_irq = toshiba_rbtx4927_irq_nested(sw_irq); - } -#endif - - TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST4, "=irq+%d\n", - sw_irq); - } - } - - TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST2, "=sw_irq=%d\n", sw_irq); - - TX4927_IRQ_DPRINTK(TX4927_IRQ_NEST1, "+\n"); - - return (sw_irq); + mips_cpu_irq_init(); + txx9_irq_init(TX4927_IRC_REG); + set_irq_chained_handler(TX4927_IRQ_NEST_PIC_ON_CP0, handle_simple_irq); } asmlinkage void plat_irq_dispatch(void) @@ -424,9 +46,12 @@ asmlinkage void plat_irq_dispatch(void) if (pending & STATUSF_IP7) /* cpu timer */ do_IRQ(TX4927_IRQ_CPU_TIMER); else if (pending & STATUSF_IP2) { /* tx4927 pic */ - unsigned int irq = tx4927_irq_nested(); - - if (unlikely(irq == 0)) { + int irq = txx9_irq(); +#ifdef CONFIG_TOSHIBA_RBTX4927 + if (irq == TX4927_IRQ_NEST_EXT_ON_PIC) + irq = toshiba_rbtx4927_irq_nested(irq); +#endif + if (unlikely(irq < 0)) { spurious_interrupt(); return; } |