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							- #ifndef _ASM_IA64_PROCESSOR_H
 
- #define _ASM_IA64_PROCESSOR_H
 
- /*
 
-  * Copyright (C) 1998-2004 Hewlett-Packard Co
 
-  *	David Mosberger-Tang <davidm@hpl.hp.com>
 
-  *	Stephane Eranian <eranian@hpl.hp.com>
 
-  * Copyright (C) 1999 Asit Mallick <asit.k.mallick@intel.com>
 
-  * Copyright (C) 1999 Don Dugger <don.dugger@intel.com>
 
-  *
 
-  * 11/24/98	S.Eranian	added ia64_set_iva()
 
-  * 12/03/99	D. Mosberger	implement thread_saved_pc() via kernel unwind API
 
-  * 06/16/00	A. Mallick	added csd/ssd/tssd for ia32 support
 
-  */
 
- #include <asm/intrinsics.h>
 
- #include <asm/kregs.h>
 
- #include <asm/ptrace.h>
 
- #include <asm/ustack.h>
 
- #define __ARCH_WANT_UNLOCKED_CTXSW
 
- #define ARCH_HAS_PREFETCH_SWITCH_STACK
 
- #define IA64_NUM_PHYS_STACK_REG	96
 
- #define IA64_NUM_DBG_REGS	8
 
- #define DEFAULT_MAP_BASE	__IA64_UL_CONST(0x2000000000000000)
 
- #define DEFAULT_TASK_SIZE	__IA64_UL_CONST(0xa000000000000000)
 
- /*
 
-  * TASK_SIZE really is a mis-named.  It really is the maximum user
 
-  * space address (plus one).  On IA-64, there are five regions of 2TB
 
-  * each (assuming 8KB page size), for a total of 8TB of user virtual
 
-  * address space.
 
-  */
 
- #define TASK_SIZE       	DEFAULT_TASK_SIZE
 
- /*
 
-  * This decides where the kernel will search for a free chunk of vm
 
-  * space during mmap's.
 
-  */
 
- #define TASK_UNMAPPED_BASE	(current->thread.map_base)
 
- #define IA64_THREAD_FPH_VALID	(__IA64_UL(1) << 0)	/* floating-point high state valid? */
 
- #define IA64_THREAD_DBG_VALID	(__IA64_UL(1) << 1)	/* debug registers valid? */
 
- #define IA64_THREAD_PM_VALID	(__IA64_UL(1) << 2)	/* performance registers valid? */
 
- #define IA64_THREAD_UAC_NOPRINT	(__IA64_UL(1) << 3)	/* don't log unaligned accesses */
 
- #define IA64_THREAD_UAC_SIGBUS	(__IA64_UL(1) << 4)	/* generate SIGBUS on unaligned acc. */
 
- #define IA64_THREAD_MIGRATION	(__IA64_UL(1) << 5)	/* require migration
 
- 							   sync at ctx sw */
 
- #define IA64_THREAD_FPEMU_NOPRINT (__IA64_UL(1) << 6)	/* don't log any fpswa faults */
 
- #define IA64_THREAD_FPEMU_SIGFPE  (__IA64_UL(1) << 7)	/* send a SIGFPE for fpswa faults */
 
- #define IA64_THREAD_UAC_SHIFT	3
 
- #define IA64_THREAD_UAC_MASK	(IA64_THREAD_UAC_NOPRINT | IA64_THREAD_UAC_SIGBUS)
 
- #define IA64_THREAD_FPEMU_SHIFT	6
 
- #define IA64_THREAD_FPEMU_MASK	(IA64_THREAD_FPEMU_NOPRINT | IA64_THREAD_FPEMU_SIGFPE)
 
- /*
 
-  * This shift should be large enough to be able to represent 1000000000/itc_freq with good
 
-  * accuracy while being small enough to fit 10*1000000000<<IA64_NSEC_PER_CYC_SHIFT in 64 bits
 
-  * (this will give enough slack to represent 10 seconds worth of time as a scaled number).
 
-  */
 
- #define IA64_NSEC_PER_CYC_SHIFT	30
 
- #ifndef __ASSEMBLY__
 
- #include <linux/cache.h>
 
- #include <linux/compiler.h>
 
- #include <linux/threads.h>
 
- #include <linux/types.h>
 
- #include <asm/fpu.h>
 
- #include <asm/page.h>
 
- #include <asm/percpu.h>
 
- #include <asm/rse.h>
 
- #include <asm/unwind.h>
 
- #include <linux/atomic.h>
 
- #ifdef CONFIG_NUMA
 
- #include <asm/nodedata.h>
 
- #endif
 
- /* like above but expressed as bitfields for more efficient access: */
 
- struct ia64_psr {
 
- 	__u64 reserved0 : 1;
 
- 	__u64 be : 1;
 
- 	__u64 up : 1;
 
- 	__u64 ac : 1;
 
- 	__u64 mfl : 1;
 
- 	__u64 mfh : 1;
 
- 	__u64 reserved1 : 7;
 
- 	__u64 ic : 1;
 
- 	__u64 i : 1;
 
- 	__u64 pk : 1;
 
- 	__u64 reserved2 : 1;
 
- 	__u64 dt : 1;
 
- 	__u64 dfl : 1;
 
- 	__u64 dfh : 1;
 
- 	__u64 sp : 1;
 
- 	__u64 pp : 1;
 
- 	__u64 di : 1;
 
- 	__u64 si : 1;
 
- 	__u64 db : 1;
 
- 	__u64 lp : 1;
 
- 	__u64 tb : 1;
 
- 	__u64 rt : 1;
 
- 	__u64 reserved3 : 4;
 
- 	__u64 cpl : 2;
 
- 	__u64 is : 1;
 
- 	__u64 mc : 1;
 
- 	__u64 it : 1;
 
- 	__u64 id : 1;
 
- 	__u64 da : 1;
 
- 	__u64 dd : 1;
 
- 	__u64 ss : 1;
 
- 	__u64 ri : 2;
 
- 	__u64 ed : 1;
 
- 	__u64 bn : 1;
 
- 	__u64 reserved4 : 19;
 
- };
 
- union ia64_isr {
 
- 	__u64  val;
 
- 	struct {
 
- 		__u64 code : 16;
 
- 		__u64 vector : 8;
 
- 		__u64 reserved1 : 8;
 
- 		__u64 x : 1;
 
- 		__u64 w : 1;
 
- 		__u64 r : 1;
 
- 		__u64 na : 1;
 
- 		__u64 sp : 1;
 
- 		__u64 rs : 1;
 
- 		__u64 ir : 1;
 
- 		__u64 ni : 1;
 
- 		__u64 so : 1;
 
- 		__u64 ei : 2;
 
- 		__u64 ed : 1;
 
- 		__u64 reserved2 : 20;
 
- 	};
 
- };
 
- union ia64_lid {
 
- 	__u64 val;
 
- 	struct {
 
- 		__u64  rv  : 16;
 
- 		__u64  eid : 8;
 
- 		__u64  id  : 8;
 
- 		__u64  ig  : 32;
 
- 	};
 
- };
 
- union ia64_tpr {
 
- 	__u64 val;
 
- 	struct {
 
- 		__u64 ig0 : 4;
 
- 		__u64 mic : 4;
 
- 		__u64 rsv : 8;
 
- 		__u64 mmi : 1;
 
- 		__u64 ig1 : 47;
 
- 	};
 
- };
 
- union ia64_itir {
 
- 	__u64 val;
 
- 	struct {
 
- 		__u64 rv3  :  2; /* 0-1 */
 
- 		__u64 ps   :  6; /* 2-7 */
 
- 		__u64 key  : 24; /* 8-31 */
 
- 		__u64 rv4  : 32; /* 32-63 */
 
- 	};
 
- };
 
- union  ia64_rr {
 
- 	__u64 val;
 
- 	struct {
 
- 		__u64  ve	:  1;  /* enable hw walker */
 
- 		__u64  reserved0:  1;  /* reserved */
 
- 		__u64  ps	:  6;  /* log page size */
 
- 		__u64  rid	: 24;  /* region id */
 
- 		__u64  reserved1: 32;  /* reserved */
 
- 	};
 
- };
 
- /*
 
-  * CPU type, hardware bug flags, and per-CPU state.  Frequently used
 
-  * state comes earlier:
 
-  */
 
- struct cpuinfo_ia64 {
 
- 	unsigned int softirq_pending;
 
- 	unsigned long itm_delta;	/* # of clock cycles between clock ticks */
 
- 	unsigned long itm_next;		/* interval timer mask value to use for next clock tick */
 
- 	unsigned long nsec_per_cyc;	/* (1000000000<<IA64_NSEC_PER_CYC_SHIFT)/itc_freq */
 
- 	unsigned long unimpl_va_mask;	/* mask of unimplemented virtual address bits (from PAL) */
 
- 	unsigned long unimpl_pa_mask;	/* mask of unimplemented physical address bits (from PAL) */
 
- 	unsigned long itc_freq;		/* frequency of ITC counter */
 
- 	unsigned long proc_freq;	/* frequency of processor */
 
- 	unsigned long cyc_per_usec;	/* itc_freq/1000000 */
 
- 	unsigned long ptce_base;
 
- 	unsigned int ptce_count[2];
 
- 	unsigned int ptce_stride[2];
 
- 	struct task_struct *ksoftirqd;	/* kernel softirq daemon for this CPU */
 
- #ifdef CONFIG_SMP
 
- 	unsigned long loops_per_jiffy;
 
- 	int cpu;
 
- 	unsigned int socket_id;	/* physical processor socket id */
 
- 	unsigned short core_id;	/* core id */
 
- 	unsigned short thread_id; /* thread id */
 
- 	unsigned short num_log;	/* Total number of logical processors on
 
- 				 * this socket that were successfully booted */
 
- 	unsigned char cores_per_socket;	/* Cores per processor socket */
 
- 	unsigned char threads_per_core;	/* Threads per core */
 
- #endif
 
- 	/* CPUID-derived information: */
 
- 	unsigned long ppn;
 
- 	unsigned long features;
 
- 	unsigned char number;
 
- 	unsigned char revision;
 
- 	unsigned char model;
 
- 	unsigned char family;
 
- 	unsigned char archrev;
 
- 	char vendor[16];
 
- 	char *model_name;
 
- #ifdef CONFIG_NUMA
 
- 	struct ia64_node_data *node_data;
 
- #endif
 
- };
 
- DECLARE_PER_CPU(struct cpuinfo_ia64, ia64_cpu_info);
 
- /*
 
-  * The "local" data variable.  It refers to the per-CPU data of the currently executing
 
-  * CPU, much like "current" points to the per-task data of the currently executing task.
 
-  * Do not use the address of local_cpu_data, since it will be different from
 
-  * cpu_data(smp_processor_id())!
 
-  */
 
- #define local_cpu_data		(&__ia64_per_cpu_var(ia64_cpu_info))
 
- #define cpu_data(cpu)		(&per_cpu(ia64_cpu_info, cpu))
 
- extern void print_cpu_info (struct cpuinfo_ia64 *);
 
- typedef struct {
 
- 	unsigned long seg;
 
- } mm_segment_t;
 
- #define SET_UNALIGN_CTL(task,value)								\
 
- ({												\
 
- 	(task)->thread.flags = (((task)->thread.flags & ~IA64_THREAD_UAC_MASK)			\
 
- 				| (((value) << IA64_THREAD_UAC_SHIFT) & IA64_THREAD_UAC_MASK));	\
 
- 	0;											\
 
- })
 
- #define GET_UNALIGN_CTL(task,addr)								\
 
- ({												\
 
- 	put_user(((task)->thread.flags & IA64_THREAD_UAC_MASK) >> IA64_THREAD_UAC_SHIFT,	\
 
- 		 (int __user *) (addr));							\
 
- })
 
- #define SET_FPEMU_CTL(task,value)								\
 
- ({												\
 
- 	(task)->thread.flags = (((task)->thread.flags & ~IA64_THREAD_FPEMU_MASK)		\
 
- 			  | (((value) << IA64_THREAD_FPEMU_SHIFT) & IA64_THREAD_FPEMU_MASK));	\
 
- 	0;											\
 
- })
 
- #define GET_FPEMU_CTL(task,addr)								\
 
- ({												\
 
- 	put_user(((task)->thread.flags & IA64_THREAD_FPEMU_MASK) >> IA64_THREAD_FPEMU_SHIFT,	\
 
- 		 (int __user *) (addr));							\
 
- })
 
- struct thread_struct {
 
- 	__u32 flags;			/* various thread flags (see IA64_THREAD_*) */
 
- 	/* writing on_ustack is performance-critical, so it's worth spending 8 bits on it... */
 
- 	__u8 on_ustack;			/* executing on user-stacks? */
 
- 	__u8 pad[3];
 
- 	__u64 ksp;			/* kernel stack pointer */
 
- 	__u64 map_base;			/* base address for get_unmapped_area() */
 
- 	__u64 rbs_bot;			/* the base address for the RBS */
 
- 	int last_fph_cpu;		/* CPU that may hold the contents of f32-f127 */
 
- #ifdef CONFIG_PERFMON
 
- 	void *pfm_context;		     /* pointer to detailed PMU context */
 
- 	unsigned long pfm_needs_checking;    /* when >0, pending perfmon work on kernel exit */
 
- # define INIT_THREAD_PM		.pfm_context =		NULL,     \
 
- 				.pfm_needs_checking =	0UL,
 
- #else
 
- # define INIT_THREAD_PM
 
- #endif
 
- 	unsigned long dbr[IA64_NUM_DBG_REGS];
 
- 	unsigned long ibr[IA64_NUM_DBG_REGS];
 
- 	struct ia64_fpreg fph[96];	/* saved/loaded on demand */
 
- };
 
- #define INIT_THREAD {						\
 
- 	.flags =	0,					\
 
- 	.on_ustack =	0,					\
 
- 	.ksp =		0,					\
 
- 	.map_base =	DEFAULT_MAP_BASE,			\
 
- 	.rbs_bot =	STACK_TOP - DEFAULT_USER_STACK_SIZE,	\
 
- 	.last_fph_cpu =  -1,					\
 
- 	INIT_THREAD_PM						\
 
- 	.dbr =		{0, },					\
 
- 	.ibr =		{0, },					\
 
- 	.fph =		{{{{0}}}, }				\
 
- }
 
- #define start_thread(regs,new_ip,new_sp) do {							\
 
- 	regs->cr_ipsr = ((regs->cr_ipsr | (IA64_PSR_BITS_TO_SET | IA64_PSR_CPL))		\
 
- 			 & ~(IA64_PSR_BITS_TO_CLEAR | IA64_PSR_RI | IA64_PSR_IS));		\
 
- 	regs->cr_iip = new_ip;									\
 
- 	regs->ar_rsc = 0xf;		/* eager mode, privilege level 3 */			\
 
- 	regs->ar_rnat = 0;									\
 
- 	regs->ar_bspstore = current->thread.rbs_bot;						\
 
- 	regs->ar_fpsr = FPSR_DEFAULT;								\
 
- 	regs->loadrs = 0;									\
 
- 	regs->r8 = get_dumpable(current->mm);	/* set "don't zap registers" flag */		\
 
- 	regs->r12 = new_sp - 16;	/* allocate 16 byte scratch area */			\
 
- 	if (unlikely(!get_dumpable(current->mm))) {							\
 
- 		/*										\
 
- 		 * Zap scratch regs to avoid leaking bits between processes with different	\
 
- 		 * uid/privileges.								\
 
- 		 */										\
 
- 		regs->ar_pfs = 0; regs->b0 = 0; regs->pr = 0;					\
 
- 		regs->r1 = 0; regs->r9  = 0; regs->r11 = 0; regs->r13 = 0; regs->r15 = 0;	\
 
- 	}											\
 
- } while (0)
 
- /* Forward declarations, a strange C thing... */
 
- struct mm_struct;
 
- struct task_struct;
 
- /*
 
-  * Free all resources held by a thread. This is called after the
 
-  * parent of DEAD_TASK has collected the exit status of the task via
 
-  * wait().
 
-  */
 
- #define release_thread(dead_task)
 
- /* Get wait channel for task P.  */
 
- extern unsigned long get_wchan (struct task_struct *p);
 
- /* Return instruction pointer of blocked task TSK.  */
 
- #define KSTK_EIP(tsk)					\
 
-   ({							\
 
- 	struct pt_regs *_regs = task_pt_regs(tsk);	\
 
- 	_regs->cr_iip + ia64_psr(_regs)->ri;		\
 
-   })
 
- /* Return stack pointer of blocked task TSK.  */
 
- #define KSTK_ESP(tsk)  ((tsk)->thread.ksp)
 
- extern void ia64_getreg_unknown_kr (void);
 
- extern void ia64_setreg_unknown_kr (void);
 
- #define ia64_get_kr(regnum)					\
 
- ({								\
 
- 	unsigned long r = 0;					\
 
- 								\
 
- 	switch (regnum) {					\
 
- 	    case 0: r = ia64_getreg(_IA64_REG_AR_KR0); break;	\
 
- 	    case 1: r = ia64_getreg(_IA64_REG_AR_KR1); break;	\
 
- 	    case 2: r = ia64_getreg(_IA64_REG_AR_KR2); break;	\
 
- 	    case 3: r = ia64_getreg(_IA64_REG_AR_KR3); break;	\
 
- 	    case 4: r = ia64_getreg(_IA64_REG_AR_KR4); break;	\
 
- 	    case 5: r = ia64_getreg(_IA64_REG_AR_KR5); break;	\
 
- 	    case 6: r = ia64_getreg(_IA64_REG_AR_KR6); break;	\
 
- 	    case 7: r = ia64_getreg(_IA64_REG_AR_KR7); break;	\
 
- 	    default: ia64_getreg_unknown_kr(); break;		\
 
- 	}							\
 
- 	r;							\
 
- })
 
- #define ia64_set_kr(regnum, r) 					\
 
- ({								\
 
- 	switch (regnum) {					\
 
- 	    case 0: ia64_setreg(_IA64_REG_AR_KR0, r); break;	\
 
- 	    case 1: ia64_setreg(_IA64_REG_AR_KR1, r); break;	\
 
- 	    case 2: ia64_setreg(_IA64_REG_AR_KR2, r); break;	\
 
- 	    case 3: ia64_setreg(_IA64_REG_AR_KR3, r); break;	\
 
- 	    case 4: ia64_setreg(_IA64_REG_AR_KR4, r); break;	\
 
- 	    case 5: ia64_setreg(_IA64_REG_AR_KR5, r); break;	\
 
- 	    case 6: ia64_setreg(_IA64_REG_AR_KR6, r); break;	\
 
- 	    case 7: ia64_setreg(_IA64_REG_AR_KR7, r); break;	\
 
- 	    default: ia64_setreg_unknown_kr(); break;		\
 
- 	}							\
 
- })
 
- /*
 
-  * The following three macros can't be inline functions because we don't have struct
 
-  * task_struct at this point.
 
-  */
 
- /*
 
-  * Return TRUE if task T owns the fph partition of the CPU we're running on.
 
-  * Must be called from code that has preemption disabled.
 
-  */
 
- #define ia64_is_local_fpu_owner(t)								\
 
- ({												\
 
- 	struct task_struct *__ia64_islfo_task = (t);						\
 
- 	(__ia64_islfo_task->thread.last_fph_cpu == smp_processor_id()				\
 
- 	 && __ia64_islfo_task == (struct task_struct *) ia64_get_kr(IA64_KR_FPU_OWNER));	\
 
- })
 
- /*
 
-  * Mark task T as owning the fph partition of the CPU we're running on.
 
-  * Must be called from code that has preemption disabled.
 
-  */
 
- #define ia64_set_local_fpu_owner(t) do {						\
 
- 	struct task_struct *__ia64_slfo_task = (t);					\
 
- 	__ia64_slfo_task->thread.last_fph_cpu = smp_processor_id();			\
 
- 	ia64_set_kr(IA64_KR_FPU_OWNER, (unsigned long) __ia64_slfo_task);		\
 
- } while (0)
 
- /* Mark the fph partition of task T as being invalid on all CPUs.  */
 
- #define ia64_drop_fpu(t)	((t)->thread.last_fph_cpu = -1)
 
- extern void __ia64_init_fpu (void);
 
- extern void __ia64_save_fpu (struct ia64_fpreg *fph);
 
- extern void __ia64_load_fpu (struct ia64_fpreg *fph);
 
- extern void ia64_save_debug_regs (unsigned long *save_area);
 
- extern void ia64_load_debug_regs (unsigned long *save_area);
 
- #define ia64_fph_enable()	do { ia64_rsm(IA64_PSR_DFH); ia64_srlz_d(); } while (0)
 
- #define ia64_fph_disable()	do { ia64_ssm(IA64_PSR_DFH); ia64_srlz_d(); } while (0)
 
- /* load fp 0.0 into fph */
 
- static inline void
 
- ia64_init_fpu (void) {
 
- 	ia64_fph_enable();
 
- 	__ia64_init_fpu();
 
- 	ia64_fph_disable();
 
- }
 
- /* save f32-f127 at FPH */
 
- static inline void
 
- ia64_save_fpu (struct ia64_fpreg *fph) {
 
- 	ia64_fph_enable();
 
- 	__ia64_save_fpu(fph);
 
- 	ia64_fph_disable();
 
- }
 
- /* load f32-f127 from FPH */
 
- static inline void
 
- ia64_load_fpu (struct ia64_fpreg *fph) {
 
- 	ia64_fph_enable();
 
- 	__ia64_load_fpu(fph);
 
- 	ia64_fph_disable();
 
- }
 
- static inline __u64
 
- ia64_clear_ic (void)
 
- {
 
- 	__u64 psr;
 
- 	psr = ia64_getreg(_IA64_REG_PSR);
 
- 	ia64_stop();
 
- 	ia64_rsm(IA64_PSR_I | IA64_PSR_IC);
 
- 	ia64_srlz_i();
 
- 	return psr;
 
- }
 
- /*
 
-  * Restore the psr.
 
-  */
 
- static inline void
 
- ia64_set_psr (__u64 psr)
 
- {
 
- 	ia64_stop();
 
- 	ia64_setreg(_IA64_REG_PSR_L, psr);
 
- 	ia64_srlz_i();
 
- }
 
- /*
 
-  * Insert a translation into an instruction and/or data translation
 
-  * register.
 
-  */
 
- static inline void
 
- ia64_itr (__u64 target_mask, __u64 tr_num,
 
- 	  __u64 vmaddr, __u64 pte,
 
- 	  __u64 log_page_size)
 
- {
 
- 	ia64_setreg(_IA64_REG_CR_ITIR, (log_page_size << 2));
 
- 	ia64_setreg(_IA64_REG_CR_IFA, vmaddr);
 
- 	ia64_stop();
 
- 	if (target_mask & 0x1)
 
- 		ia64_itri(tr_num, pte);
 
- 	if (target_mask & 0x2)
 
- 		ia64_itrd(tr_num, pte);
 
- }
 
- /*
 
-  * Insert a translation into the instruction and/or data translation
 
-  * cache.
 
-  */
 
- static inline void
 
- ia64_itc (__u64 target_mask, __u64 vmaddr, __u64 pte,
 
- 	  __u64 log_page_size)
 
- {
 
- 	ia64_setreg(_IA64_REG_CR_ITIR, (log_page_size << 2));
 
- 	ia64_setreg(_IA64_REG_CR_IFA, vmaddr);
 
- 	ia64_stop();
 
- 	/* as per EAS2.6, itc must be the last instruction in an instruction group */
 
- 	if (target_mask & 0x1)
 
- 		ia64_itci(pte);
 
- 	if (target_mask & 0x2)
 
- 		ia64_itcd(pte);
 
- }
 
- /*
 
-  * Purge a range of addresses from instruction and/or data translation
 
-  * register(s).
 
-  */
 
- static inline void
 
- ia64_ptr (__u64 target_mask, __u64 vmaddr, __u64 log_size)
 
- {
 
- 	if (target_mask & 0x1)
 
- 		ia64_ptri(vmaddr, (log_size << 2));
 
- 	if (target_mask & 0x2)
 
- 		ia64_ptrd(vmaddr, (log_size << 2));
 
- }
 
- /* Set the interrupt vector address.  The address must be suitably aligned (32KB).  */
 
- static inline void
 
- ia64_set_iva (void *ivt_addr)
 
- {
 
- 	ia64_setreg(_IA64_REG_CR_IVA, (__u64) ivt_addr);
 
- 	ia64_srlz_i();
 
- }
 
- /* Set the page table address and control bits.  */
 
- static inline void
 
- ia64_set_pta (__u64 pta)
 
- {
 
- 	/* Note: srlz.i implies srlz.d */
 
- 	ia64_setreg(_IA64_REG_CR_PTA, pta);
 
- 	ia64_srlz_i();
 
- }
 
- static inline void
 
- ia64_eoi (void)
 
- {
 
- 	ia64_setreg(_IA64_REG_CR_EOI, 0);
 
- 	ia64_srlz_d();
 
- }
 
- #define cpu_relax()	ia64_hint(ia64_hint_pause)
 
- static inline int
 
- ia64_get_irr(unsigned int vector)
 
- {
 
- 	unsigned int reg = vector / 64;
 
- 	unsigned int bit = vector % 64;
 
- 	u64 irr;
 
- 	switch (reg) {
 
- 	case 0: irr = ia64_getreg(_IA64_REG_CR_IRR0); break;
 
- 	case 1: irr = ia64_getreg(_IA64_REG_CR_IRR1); break;
 
- 	case 2: irr = ia64_getreg(_IA64_REG_CR_IRR2); break;
 
- 	case 3: irr = ia64_getreg(_IA64_REG_CR_IRR3); break;
 
- 	}
 
- 	return test_bit(bit, &irr);
 
- }
 
- static inline void
 
- ia64_set_lrr0 (unsigned long val)
 
- {
 
- 	ia64_setreg(_IA64_REG_CR_LRR0, val);
 
- 	ia64_srlz_d();
 
- }
 
- static inline void
 
- ia64_set_lrr1 (unsigned long val)
 
- {
 
- 	ia64_setreg(_IA64_REG_CR_LRR1, val);
 
- 	ia64_srlz_d();
 
- }
 
- /*
 
-  * Given the address to which a spill occurred, return the unat bit
 
-  * number that corresponds to this address.
 
-  */
 
- static inline __u64
 
- ia64_unat_pos (void *spill_addr)
 
- {
 
- 	return ((__u64) spill_addr >> 3) & 0x3f;
 
- }
 
- /*
 
-  * Set the NaT bit of an integer register which was spilled at address
 
-  * SPILL_ADDR.  UNAT is the mask to be updated.
 
-  */
 
- static inline void
 
- ia64_set_unat (__u64 *unat, void *spill_addr, unsigned long nat)
 
- {
 
- 	__u64 bit = ia64_unat_pos(spill_addr);
 
- 	__u64 mask = 1UL << bit;
 
- 	*unat = (*unat & ~mask) | (nat << bit);
 
- }
 
- /*
 
-  * Return saved PC of a blocked thread.
 
-  * Note that the only way T can block is through a call to schedule() -> switch_to().
 
-  */
 
- static inline unsigned long
 
- thread_saved_pc (struct task_struct *t)
 
- {
 
- 	struct unw_frame_info info;
 
- 	unsigned long ip;
 
- 	unw_init_from_blocked_task(&info, t);
 
- 	if (unw_unwind(&info) < 0)
 
- 		return 0;
 
- 	unw_get_ip(&info, &ip);
 
- 	return ip;
 
- }
 
- /*
 
-  * Get the current instruction/program counter value.
 
-  */
 
- #define current_text_addr() \
 
- 	({ void *_pc; _pc = (void *)ia64_getreg(_IA64_REG_IP); _pc; })
 
- static inline __u64
 
- ia64_get_ivr (void)
 
- {
 
- 	__u64 r;
 
- 	ia64_srlz_d();
 
- 	r = ia64_getreg(_IA64_REG_CR_IVR);
 
- 	ia64_srlz_d();
 
- 	return r;
 
- }
 
- static inline void
 
- ia64_set_dbr (__u64 regnum, __u64 value)
 
- {
 
- 	__ia64_set_dbr(regnum, value);
 
- #ifdef CONFIG_ITANIUM
 
- 	ia64_srlz_d();
 
- #endif
 
- }
 
- static inline __u64
 
- ia64_get_dbr (__u64 regnum)
 
- {
 
- 	__u64 retval;
 
- 	retval = __ia64_get_dbr(regnum);
 
- #ifdef CONFIG_ITANIUM
 
- 	ia64_srlz_d();
 
- #endif
 
- 	return retval;
 
- }
 
- static inline __u64
 
- ia64_rotr (__u64 w, __u64 n)
 
- {
 
- 	return (w >> n) | (w << (64 - n));
 
- }
 
- #define ia64_rotl(w,n)	ia64_rotr((w), (64) - (n))
 
- /*
 
-  * Take a mapped kernel address and return the equivalent address
 
-  * in the region 7 identity mapped virtual area.
 
-  */
 
- static inline void *
 
- ia64_imva (void *addr)
 
- {
 
- 	void *result;
 
- 	result = (void *) ia64_tpa(addr);
 
- 	return __va(result);
 
- }
 
- #define ARCH_HAS_PREFETCH
 
- #define ARCH_HAS_PREFETCHW
 
- #define ARCH_HAS_SPINLOCK_PREFETCH
 
- #define PREFETCH_STRIDE			L1_CACHE_BYTES
 
- static inline void
 
- prefetch (const void *x)
 
- {
 
- 	 ia64_lfetch(ia64_lfhint_none, x);
 
- }
 
- static inline void
 
- prefetchw (const void *x)
 
- {
 
- 	ia64_lfetch_excl(ia64_lfhint_none, x);
 
- }
 
- #define spin_lock_prefetch(x)	prefetchw(x)
 
- extern unsigned long boot_option_idle_override;
 
- enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_FORCE_MWAIT,
 
- 			 IDLE_NOMWAIT, IDLE_POLL};
 
- void default_idle(void);
 
- #define ia64_platform_is(x) (strcmp(x, ia64_platform_name) == 0)
 
- #endif /* !__ASSEMBLY__ */
 
- #endif /* _ASM_IA64_PROCESSOR_H */
 
 
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