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Diffstat (limited to 'src/include/cpu/p6/apic.h')
-rw-r--r-- | src/include/cpu/p6/apic.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/include/cpu/p6/apic.h b/src/include/cpu/p6/apic.h new file mode 100644 index 0000000000..b91cdb2a86 --- /dev/null +++ b/src/include/cpu/p6/apic.h @@ -0,0 +1,175 @@ +#ifndef APIC_H +#define APIC_H + +#define APIC_BASE_MSR 0x1B +#define APIC_BASE_MSR_BOOTSTRAP_PROCESSOR (1 << 8) +#define APIC_BASE_MSR_ENABLE (1 << 11) +#define APIC_BASE_MSR_ADDR_MASK 0xFFFFF000 + +#define APIC_DEFAULT_BASE 0xfee00000 + +#define APIC_ID 0x020 +#define APIC_LVR 0x030 +#define APIC_ARBID 0x090 +#define APIC_RRR 0x0C0 +#define APIC_SVR 0x0f0 +#define APIC_SPIV 0x0f0 +#define APIC_SPIV_ENABLE 0x100 +#define APIC_ESR 0x280 +#define APIC_ESR_SEND_CS 0x00001 +#define APIC_ESR_RECV_CS 0x00002 +#define APIC_ESR_SEND_ACC 0x00004 +#define APIC_ESR_RECV_ACC 0x00008 +#define APIC_ESR_SENDILL 0x00020 +#define APIC_ESR_RECVILL 0x00040 +#define APIC_ESR_ILLREGA 0x00080 +#define APIC_ICR 0x300 +#define APIC_DEST_SELF 0x40000 +#define APIC_DEST_ALLINC 0x80000 +#define APIC_DEST_ALLBUT 0xC0000 +#define APIC_ICR_RR_MASK 0x30000 +#define APIC_ICR_RR_INVALID 0x00000 +#define APIC_ICR_RR_INPROG 0x10000 +#define APIC_ICR_RR_VALID 0x20000 +#define APIC_INT_LEVELTRIG 0x08000 +#define APIC_INT_ASSERT 0x04000 +#define APIC_ICR_BUSY 0x01000 +#define APIC_DEST_LOGICAL 0x00800 +#define APIC_DM_FIXED 0x00000 +#define APIC_DM_LOWEST 0x00100 +#define APIC_DM_SMI 0x00200 +#define APIC_DM_REMRD 0x00300 +#define APIC_DM_NMI 0x00400 +#define APIC_DM_INIT 0x00500 +#define APIC_DM_STARTUP 0x00600 +#define APIC_DM_EXTINT 0x00700 +#define APIC_VECTOR_MASK 0x000FF +#define APIC_ICR2 0x310 +#define GET_APIC_DEST_FIELD(x) (((x)>>24)&0xFF) +#define SET_APIC_DEST_FIELD(x) ((x)<<24) +#define APIC_LVTT 0x320 +#define APIC_LVTPC 0x340 +#define APIC_LVT0 0x350 +#define APIC_LVT_TIMER_BASE_MASK (0x3<<18) +#define GET_APIC_TIMER_BASE(x) (((x)>>18)&0x3) +#define SET_APIC_TIMER_BASE(x) (((x)<<18)) +#define APIC_TIMER_BASE_CLKIN 0x0 +#define APIC_TIMER_BASE_TMBASE 0x1 +#define APIC_TIMER_BASE_DIV 0x2 +#define APIC_LVT_TIMER_PERIODIC (1<<17) +#define APIC_LVT_MASKED (1<<16) +#define APIC_LVT_LEVEL_TRIGGER (1<<15) +#define APIC_LVT_REMOTE_IRR (1<<14) +#define APIC_INPUT_POLARITY (1<<13) +#define APIC_SEND_PENDING (1<<12) +#define APIC_LVT_RESERVED_1 (1<<11) +#define APIC_DELIVERY_MODE_MASK (7<<8) +#define APIC_DELIVERY_MODE_FIXED (0<<8) +#define APIC_DELIVERY_MODE_NMI (4<<8) +#define APIC_DELIVERY_MODE_EXTINT (7<<8) +#define GET_APIC_DELIVERY_MODE(x) (((x)>>8)&0x7) +#define SET_APIC_DELIVERY_MODE(x,y) (((x)&~0x700)|((y)<<8)) +#define APIC_MODE_FIXED 0x0 +#define APIC_MODE_NMI 0x4 +#define APIC_MODE_EXINT 0x7 +#define APIC_LVT1 0x360 +#define APIC_LVTERR 0x370 + + +#if !defined(ASSEMBLY) + +#include <console/console.h> + + +#define xchg(ptr,v) ((__typeof__(*(ptr)))__xchg((unsigned long)(v),(ptr),sizeof(*(ptr)))) + +struct __xchg_dummy { unsigned long a[100]; }; +#define __xg(x) ((struct __xchg_dummy *)(x)) + +/* + * Note: no "lock" prefix even on SMP: xchg always implies lock anyway + * Note 2: xchg has side effect, so that attribute volatile is necessary, + * but generally the primitive is invalid, *ptr is output argument. --ANK + */ +static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size) +{ + switch (size) { + case 1: + __asm__ __volatile__("xchgb %b0,%1" + :"=q" (x) + :"m" (*__xg(ptr)), "0" (x) + :"memory"); + break; + case 2: + __asm__ __volatile__("xchgw %w0,%1" + :"=r" (x) + :"m" (*__xg(ptr)), "0" (x) + :"memory"); + break; + case 4: + __asm__ __volatile__("xchgl %0,%1" + :"=r" (x) + :"m" (*__xg(ptr)), "0" (x) + :"memory"); + break; + } + return x; +} + + +static inline unsigned long apic_read(unsigned long reg) +{ + return *((volatile unsigned long *)(APIC_DEFAULT_BASE+reg)); +} + +extern inline void apic_write_atomic(unsigned long reg, unsigned long v) +{ + xchg((volatile unsigned long *)(APIC_DEFAULT_BASE+reg), v); +} + +static inline void apic_write(unsigned long reg, unsigned long v) +{ + *((volatile unsigned long *)(APIC_DEFAULT_BASE+reg)) = v; +} + +static inline void apic_wait_icr_idle(void) +{ + do { } while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY ); +} + +#ifdef CONFIG_X86_GOOD_APIC +# define FORCE_READ_AROUND_WRITE 0 +# define apic_read_around(x) apic_read(x) +# define apic_write_around(x,y) apic_write((x),(y)) +#else +# define FORCE_READ_AROUND_WRITE 1 +# define apic_read_around(x) apic_read(x) +# define apic_write_around(x,y) apic_write_atomic((x),(y)) +#endif + +static inline int apic_remote_read(int apicid, int reg, unsigned long *pvalue) +{ + int timeout; + unsigned long status; + int result; + apic_wait_icr_idle(); + apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(apicid)); + apic_write_around(APIC_ICR, APIC_DM_REMRD | (reg >> 4)); + timeout = 0; + do { +#if 0 + udelay(100); +#endif + status = apic_read(APIC_ICR) & APIC_ICR_RR_MASK; + } while (status == APIC_ICR_RR_INPROG && timeout++ < 1000); + + result = -1; + if (status == APIC_ICR_RR_VALID) { + *pvalue = apic_read(APIC_RRR); + result = 0; + } + return result; +} +#endif /* ASSEMBLY */ + +#endif /* APIC_H */ |