processor.h
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- #ifndef _ASM_IA64_PROCESSOR_H
- #define _ASM_IA64_PROCESSOR_H
- /*
- * Copyright (C) 1998-2002 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 <linux/config.h>
- #include <linux/cache.h>
- #include <asm/ptrace.h>
- #include <asm/kregs.h>
- #include <asm/types.h>
- #define IA64_NUM_DBG_REGS 8
- /*
- * Limits for PMC and PMD are set to less than maximum architected values
- * but should be sufficient for a while
- */
- #define IA64_NUM_PMC_REGS 32
- #define IA64_NUM_PMD_REGS 32
- #define DEFAULT_MAP_BASE 0x2000000000000000
- #define DEFAULT_TASK_SIZE 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 (current->thread.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)
- /*
- * Bus types
- */
- #define EISA_bus 0
- #define EISA_bus__is_a_macro /* for versions in ksyms.c */
- #define MCA_bus 0
- #define MCA_bus__is_a_macro /* for versions in ksyms.c */
- #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_KRBS_SYNCED (__IA64_UL(1) << 5) /* krbs synced with process vm? */
- #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_XSTACK (__IA64_UL(1) << 8) /* stack executable by default? */
- #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
- * 1000000/itc_freq with good accuracy while being small enough to fit
- * 1000000<<IA64_USEC_PER_CYC_SHIFT in 64 bits.
- */
- #define IA64_USEC_PER_CYC_SHIFT 41
- #ifndef __ASSEMBLY__
- #include <linux/threads.h>
- #include <linux/cache.h>
- #include <asm/fpu.h>
- #include <asm/offsets.h>
- #include <asm/page.h>
- #include <asm/rse.h>
- #include <asm/unwind.h>
- #include <asm/atomic.h>
- /* 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;
- };
- /*
- * CPU type, hardware bug flags, and per-CPU state. Frequently used
- * state comes earlier:
- */
- struct cpuinfo_ia64 {
- /* irq_stat must be 64-bit aligned */
- union {
- struct {
- __u32 irq_count;
- __u32 bh_count;
- } f;
- __u64 irq_and_bh_counts;
- } irq_stat;
- __u32 softirq_pending;
- __u32 phys_stacked_size_p8; /* size of physical stacked registers + 8 */
- __u64 itm_delta; /* # of clock cycles between clock ticks */
- __u64 itm_next; /* interval timer mask value to use for next clock tick */
- __u64 *pgd_quick;
- __u64 *pmd_quick;
- __u64 *pte_quick;
- __u64 pgtable_cache_sz;
- /* CPUID-derived information: */
- __u64 ppn;
- __u64 features;
- __u8 number;
- __u8 revision;
- __u8 model;
- __u8 family;
- __u8 archrev;
- char vendor[16];
- __u64 itc_freq; /* frequency of ITC counter */
- __u64 proc_freq; /* frequency of processor */
- __u64 cyc_per_usec; /* itc_freq/1000000 */
- __u64 usec_per_cyc; /* 2^IA64_USEC_PER_CYC_SHIFT*1000000/itc_freq */
- __u64 unimpl_va_mask; /* mask of unimplemented virtual address bits (from PAL) */
- __u64 unimpl_pa_mask; /* mask of unimplemented physical address bits (from PAL) */
- __u64 ptce_base;
- __u32 ptce_count[2];
- __u32 ptce_stride[2];
- struct task_struct *ksoftirqd; /* kernel softirq daemon for this CPU */
- #ifdef CONFIG_SMP
- int processor;
- __u64 loops_per_jiffy;
- __u64 ipi_count;
- __u64 prof_counter;
- __u64 prof_multiplier;
- # ifdef CONFIG_PERFMON
- __u32 pfm_syst_wide;
- __u32 pfm_dcr_pp;
- # endif
- union {
- /*
- * This is written to by *other* CPUs,
- * so isolate it in its own cacheline.
- */
- __u64 operation;
- char pad[SMP_CACHE_BYTES] ____cacheline_aligned;
- } ipi;
- #endif
- #ifdef CONFIG_NUMA
- void *node_directory;
- int numa_node_id;
- struct cpuinfo_ia64 *cpu_data[NR_CPUS];
- #endif
- /* Platform specific word. MUST BE LAST IN STRUCT */
- __u64 platform_specific;
- } __attribute__ ((aligned (PAGE_SIZE)));
- /*
- * The "local" data pointer. It points to the per-CPU data of the currently executing
- * CPU, much like "current" points to the per-task data of the currently executing task.
- */
- #define local_cpu_data ((struct cpuinfo_ia64 *) PERCPU_ADDR)
- /*
- * On NUMA systems, cpu_data for each cpu is allocated during cpu_init() & is allocated on
- * the node that contains the cpu. This minimizes off-node memory references. cpu_data
- * for each cpu contains an array of pointers to the cpu_data structures of each of the
- * other cpus.
- *
- * On non-NUMA systems, cpu_data is a static array allocated at compile time. References
- * to the cpu_data of another cpu is done by direct references to the appropriate entry of
- * the array.
- */
- #ifdef CONFIG_NUMA
- # define cpu_data(cpu) local_cpu_data->cpu_data[cpu]
- # define numa_node_id() (local_cpu_data->numa_node_id)
- #else
- extern struct cpuinfo_ia64 _cpu_data[NR_CPUS];
- # define cpu_data(cpu) (&_cpu_data[cpu])
- #endif
- extern void identify_cpu (struct cpuinfo_ia64 *);
- 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 *) (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 *) (addr));
- })
- struct siginfo;
- struct thread_struct {
- __u64 ksp; /* kernel stack pointer */
- unsigned long flags; /* various flags */
- __u64 map_base; /* base address for get_unmapped_area() */
- __u64 task_size; /* limit for task size */
- struct siginfo *siginfo; /* current siginfo struct for ptrace() */
- #ifdef CONFIG_IA32_SUPPORT
- __u64 eflag; /* IA32 EFLAGS reg */
- __u64 fsr; /* IA32 floating pt status reg */
- __u64 fcr; /* IA32 floating pt control reg */
- __u64 fir; /* IA32 fp except. instr. reg */
- __u64 fdr; /* IA32 fp except. data reg */
- __u64 csd; /* IA32 code selector descriptor */
- __u64 ssd; /* IA32 stack selector descriptor */
- __u64 old_k1; /* old value of ar.k1 */
- __u64 old_iob; /* old IOBase value */
- # define INIT_THREAD_IA32 0, 0, 0x17800000037fULL, 0, 0, 0, 0, 0, 0,
- #else
- # define INIT_THREAD_IA32
- #endif /* CONFIG_IA32_SUPPORT */
- #ifdef CONFIG_PERFMON
- __u64 pmc[IA64_NUM_PMC_REGS];
- __u64 pmd[IA64_NUM_PMD_REGS];
- unsigned long pfm_ovfl_block_reset;/* non-zero if we need to block or reset regs on ovfl */
- void *pfm_context; /* pointer to detailed PMU context */
- atomic_t pfm_notifiers_check; /* when >0, will cleanup ctx_notify_task in tasklist */
- atomic_t pfm_owners_check; /* when >0, will cleanup ctx_owner in tasklist */
- void *pfm_smpl_buf_list; /* list of sampling buffers to vfree */
- # define INIT_THREAD_PM {0, }, {0, }, 0, NULL, {0}, {0}, NULL,
- #else
- # define INIT_THREAD_PM
- #endif
- __u64 dbr[IA64_NUM_DBG_REGS];
- __u64 ibr[IA64_NUM_DBG_REGS];
- struct ia64_fpreg fph[96]; /* saved/loaded on demand */
- int last_fph_cpu;
- };
- #define INIT_THREAD {
- 0, /* ksp */
- 0, /* flags */
- DEFAULT_MAP_BASE, /* map_base */
- DEFAULT_TASK_SIZE, /* task_size */
- 0, /* siginfo */
- INIT_THREAD_IA32
- INIT_THREAD_PM
- {0, }, /* dbr */
- {0, }, /* ibr */
- {{{{0}}}, } /* fph */
- }
- #define start_thread(regs,new_ip,new_sp) do {
- set_fs(USER_DS);
- regs->cr_ipsr = ((regs->cr_ipsr | (IA64_PSR_BITS_TO_SET | IA64_PSR_CPL | IA64_PSR_SP))
- & ~(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 = IA64_RBS_BOT;
- regs->ar_fpsr = FPSR_DEFAULT;
- regs->loadrs = 0;
- regs->r8 = current->mm->dumpable; /* set "don't zap registers" flag */
- regs->r12 = new_sp - 16; /* allocate 16 byte scratch area */
- if (!__builtin_expect (current->mm->dumpable, 1)) {
- /*
- * Zap scratch regs to avoid leaking bits between processes with different
- * uid/privileges.
- */
- regs->ar_pfs = 0;
- regs->pr = 0;
- /*
- * XXX fix me: everything below can go away once we stop preserving scratch
- * regs on a system call.
- */
- regs->b6 = 0;
- regs->r1 = 0; regs->r2 = 0; regs->r3 = 0;
- regs->r13 = 0; regs->r14 = 0; regs->r15 = 0;
- regs->r9 = 0; regs->r11 = 0;
- regs->r16 = 0; regs->r17 = 0; regs->r18 = 0; regs->r19 = 0;
- regs->r20 = 0; regs->r21 = 0; regs->r22 = 0; regs->r23 = 0;
- regs->r24 = 0; regs->r25 = 0; regs->r26 = 0; regs->r27 = 0;
- regs->r28 = 0; regs->r29 = 0; regs->r30 = 0; regs->r31 = 0;
- regs->ar_ccv = 0;
- regs->b0 = 0; regs->b7 = 0;
- regs->f6.u.bits[0] = 0; regs->f6.u.bits[1] = 0;
- regs->f7.u.bits[0] = 0; regs->f7.u.bits[1] = 0;
- regs->f8.u.bits[0] = 0; regs->f8.u.bits[1] = 0;
- regs->f9.u.bits[0] = 0; regs->f9.u.bits[1] = 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 exist status of the task via
- * wait().
- */
- #ifdef CONFIG_PERFMON
- extern void release_thread (struct task_struct *task);
- #else
- # define release_thread(dead_task)
- #endif
- /*
- * This is the mechanism for creating a new kernel thread.
- *
- * NOTE 1: Only a kernel-only process (ie the swapper or direct
- * descendants who haven't done an "execve()") should use this: it
- * will work within a system call from a "real" process, but the
- * process memory space will not be free'd until both the parent and
- * the child have exited.
- *
- * NOTE 2: This MUST NOT be an inlined function. Otherwise, we get
- * into trouble in init/main.c when the child thread returns to
- * do_basic_setup() and the timing is such that free_initmem() has
- * been called already.
- */
- extern int kernel_thread (int (*fn)(void *), void *arg, unsigned long flags);
- /* Copy and release all segment info associated with a VM */
- #define copy_segments(tsk, mm) do { } while (0)
- #define release_segments(mm) do { } while (0)
- /* 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 = ia64_task_regs(tsk);
- _regs->cr_iip + ia64_psr(_regs)->ri;
- })
- /* Return stack pointer of blocked task TSK. */
- #define KSTK_ESP(tsk) ((tsk)->thread.ksp)
- static inline unsigned long
- ia64_get_kr (unsigned long regnum)
- {
- unsigned long r;
- switch (regnum) {
- case 0: asm volatile ("mov %0=ar.k0" : "=r"(r)); break;
- case 1: asm volatile ("mov %0=ar.k1" : "=r"(r)); break;
- case 2: asm volatile ("mov %0=ar.k2" : "=r"(r)); break;
- case 3: asm volatile ("mov %0=ar.k3" : "=r"(r)); break;
- case 4: asm volatile ("mov %0=ar.k4" : "=r"(r)); break;
- case 5: asm volatile ("mov %0=ar.k5" : "=r"(r)); break;
- case 6: asm volatile ("mov %0=ar.k6" : "=r"(r)); break;
- case 7: asm volatile ("mov %0=ar.k7" : "=r"(r)); break;
- }
- return r;
- }
- static inline void
- ia64_set_kr (unsigned long regnum, unsigned long r)
- {
- switch (regnum) {
- case 0: asm volatile ("mov ar.k0=%0" :: "r"(r)); break;
- case 1: asm volatile ("mov ar.k1=%0" :: "r"(r)); break;
- case 2: asm volatile ("mov ar.k2=%0" :: "r"(r)); break;
- case 3: asm volatile ("mov ar.k3=%0" :: "r"(r)); break;
- case 4: asm volatile ("mov ar.k4=%0" :: "r"(r)); break;
- case 5: asm volatile ("mov ar.k5=%0" :: "r"(r)); break;
- case 6: asm volatile ("mov ar.k6=%0" :: "r"(r)); break;
- case 7: asm volatile ("mov ar.k7=%0" :: "r"(r)); break;
- }
- }
- static inline struct task_struct *
- ia64_get_fpu_owner (void)
- {
- return (struct task_struct *) ia64_get_kr(IA64_KR_FPU_OWNER);
- }
- static inline void
- ia64_set_fpu_owner (struct task_struct *t)
- {
- ia64_set_kr(IA64_KR_FPU_OWNER, (unsigned long) t);
- }
- 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);
- #ifdef CONFIG_IA32_SUPPORT
- extern void ia32_save_state (struct task_struct *task);
- extern void ia32_load_state (struct task_struct *task);
- #endif
- #define ia64_fph_enable() asm volatile (";; rsm psr.dfh;; srlz.d;;" ::: "memory");
- #define ia64_fph_disable() asm volatile (";; ssm psr.dfh;; srlz.d;;" ::: "memory");
- /* 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 void
- ia64_fc (void *addr)
- {
- asm volatile ("fc %0" :: "r"(addr) : "memory");
- }
- static inline void
- ia64_sync_i (void)
- {
- asm volatile (";; sync.i" ::: "memory");
- }
- static inline void
- ia64_srlz_i (void)
- {
- asm volatile (";; srlz.i ;;" ::: "memory");
- }
- static inline void
- ia64_srlz_d (void)
- {
- asm volatile (";; srlz.d" ::: "memory");
- }
- static inline __u64
- ia64_get_rr (__u64 reg_bits)
- {
- __u64 r;
- asm volatile ("mov %0=rr[%1]" : "=r"(r) : "r"(reg_bits) : "memory");
- return r;
- }
- static inline void
- ia64_set_rr (__u64 reg_bits, __u64 rr_val)
- {
- asm volatile ("mov rr[%0]=%1" :: "r"(reg_bits), "r"(rr_val) : "memory");
- }
- static inline __u64
- ia64_get_dcr (void)
- {
- __u64 r;
- asm volatile ("mov %0=cr.dcr" : "=r"(r));
- return r;
- }
- static inline void
- ia64_set_dcr (__u64 val)
- {
- asm volatile ("mov cr.dcr=%0;;" :: "r"(val) : "memory");
- ia64_srlz_d();
- }
- static inline __u64
- ia64_get_lid (void)
- {
- __u64 r;
- asm volatile ("mov %0=cr.lid" : "=r"(r));
- return r;
- }
- static inline void
- ia64_invala (void)
- {
- asm volatile ("invala" ::: "memory");
- }
- /*
- * Save the processor status flags in FLAGS and then clear the interrupt collection and
- * interrupt enable bits. Don't trigger any mandatory RSE references while this bit is
- * off!
- */
- static inline __u64
- ia64_clear_ic (void)
- {
- __u64 psr;
- asm volatile ("mov %0=psr;; rsm psr.i | psr.ic;; srlz.i;;" : "=r"(psr) :: "memory");
- return psr;
- }
- /*
- * Restore the psr.
- */
- static inline void
- ia64_set_psr (__u64 psr)
- {
- asm volatile (";; mov psr.l=%0;; srlz.d" :: "r" (psr) : "memory");
- }
- /*
- * 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)
- {
- asm volatile ("mov cr.itir=%0" :: "r"(log_page_size << 2) : "memory");
- asm volatile ("mov cr.ifa=%0;;" :: "r"(vmaddr) : "memory");
- if (target_mask & 0x1)
- asm volatile ("itr.i itr[%0]=%1"
- :: "r"(tr_num), "r"(pte) : "memory");
- if (target_mask & 0x2)
- asm volatile (";;itr.d dtr[%0]=%1"
- :: "r"(tr_num), "r"(pte) : "memory");
- }
- /*
- * 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)
- {
- asm volatile ("mov cr.itir=%0" :: "r"(log_page_size << 2) : "memory");
- asm volatile ("mov cr.ifa=%0;;" :: "r"(vmaddr) : "memory");
- /* as per EAS2.6, itc must be the last instruction in an instruction group */
- if (target_mask & 0x1)
- asm volatile ("itc.i %0;;" :: "r"(pte) : "memory");
- if (target_mask & 0x2)
- asm volatile (";;itc.d %0;;" :: "r"(pte) : "memory");
- }
- /*
- * 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)
- asm volatile ("ptr.i %0,%1" :: "r"(vmaddr), "r"(log_size << 2));
- if (target_mask & 0x2)
- asm volatile ("ptr.d %0,%1" :: "r"(vmaddr), "r"(log_size << 2));
- }
- /* Set the interrupt vector address. The address must be suitably aligned (32KB). */
- static inline void
- ia64_set_iva (void *ivt_addr)
- {
- asm volatile ("mov cr.iva=%0;; srlz.i;;" :: "r"(ivt_addr) : "memory");
- }
- /* Set the page table address and control bits. */
- static inline void
- ia64_set_pta (__u64 pta)
- {
- /* Note: srlz.i implies srlz.d */
- asm volatile ("mov cr.pta=%0;; srlz.i;;" :: "r"(pta) : "memory");
- }
- static inline __u64
- ia64_get_cpuid (__u64 regnum)
- {
- __u64 r;
- asm ("mov %0=cpuid[%r1]" : "=r"(r) : "rO"(regnum));
- return r;
- }
- static inline void
- ia64_eoi (void)
- {
- asm ("mov cr.eoi=r0;; srlz.d;;" ::: "memory");
- }
- static inline void
- ia64_set_lrr0 (unsigned long val)
- {
- asm volatile ("mov cr.lrr0=%0;; srlz.d" :: "r"(val) : "memory");
- }
- #define cpu_relax() do { } while (0)
- static inline void
- ia64_set_lrr1 (unsigned long val)
- {
- asm volatile ("mov cr.lrr1=%0;; srlz.d" :: "r"(val) : "memory");
- }
- static inline void
- ia64_set_pmv (__u64 val)
- {
- asm volatile ("mov cr.pmv=%0" :: "r"(val) : "memory");
- }
- static inline __u64
- ia64_get_pmc (__u64 regnum)
- {
- __u64 retval;
- asm volatile ("mov %0=pmc[%1]" : "=r"(retval) : "r"(regnum));
- return retval;
- }
- static inline void
- ia64_set_pmc (__u64 regnum, __u64 value)
- {
- asm volatile ("mov pmc[%0]=%1" :: "r"(regnum), "r"(value));
- }
- static inline __u64
- ia64_get_pmd (__u64 regnum)
- {
- __u64 retval;
- asm volatile ("mov %0=pmd[%1]" : "=r"(retval) : "r"(regnum));
- return retval;
- }
- static inline void
- ia64_set_pmd (__u64 regnum, __u64 value)
- {
- asm volatile ("mov pmd[%0]=%1" :: "r"(regnum), "r"(value));
- }
- /*
- * 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 thread_struct *t)
- {
- struct unw_frame_info info;
- unsigned long ip;
- /* XXX ouch: Linus, please pass the task pointer to thread_saved_pc() instead! */
- struct task_struct *p = (void *) ((unsigned long) t - IA64_TASK_THREAD_OFFSET);
- unw_init_from_blocked_task(&info, p);
- 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; asm volatile ("mov %0=ip" : "=r" (_pc)); _pc; })
- #define THREAD_SIZE IA64_STK_OFFSET
- /* NOTE: The task struct and the stacks are allocated together. */
- #define alloc_task_struct()
- ((struct task_struct *) __get_free_pages(GFP_KERNEL, IA64_TASK_STRUCT_LOG_NUM_PAGES))
- #define free_task_struct(p) free_pages((unsigned long)(p), IA64_TASK_STRUCT_LOG_NUM_PAGES)
- #define get_task_struct(tsk) atomic_inc(&virt_to_page(tsk)->count)
- #define init_task (init_task_union.task)
- #define init_stack (init_task_union.stack)
- /*
- * Set the correctable machine check vector register
- */
- static inline void
- ia64_set_cmcv (__u64 val)
- {
- asm volatile ("mov cr.cmcv=%0" :: "r"(val) : "memory");
- }
- /*
- * Read the correctable machine check vector register
- */
- static inline __u64
- ia64_get_cmcv (void)
- {
- __u64 val;
- asm volatile ("mov %0=cr.cmcv" : "=r"(val) :: "memory");
- return val;
- }
- static inline __u64
- ia64_get_ivr (void)
- {
- __u64 r;
- asm volatile ("srlz.d;; mov %0=cr.ivr;; srlz.d;;" : "=r"(r));
- return r;
- }
- static inline void
- ia64_set_tpr (__u64 val)
- {
- asm volatile ("mov cr.tpr=%0" :: "r"(val));
- }
- static inline __u64
- ia64_get_tpr (void)
- {
- __u64 r;
- asm volatile ("mov %0=cr.tpr" : "=r"(r));
- return r;
- }
- static inline void
- ia64_set_irr0 (__u64 val)
- {
- asm volatile("mov cr.irr0=%0;;" :: "r"(val) : "memory");
- ia64_srlz_d();
- }
- static inline __u64
- ia64_get_irr0 (void)
- {
- __u64 val;
- /* this is volatile because irr may change unbeknownst to gcc... */
- asm volatile("mov %0=cr.irr0" : "=r"(val));
- return val;
- }
- static inline void
- ia64_set_irr1 (__u64 val)
- {
- asm volatile("mov cr.irr1=%0;;" :: "r"(val) : "memory");
- ia64_srlz_d();
- }
- static inline __u64
- ia64_get_irr1 (void)
- {
- __u64 val;
- /* this is volatile because irr may change unbeknownst to gcc... */
- asm volatile("mov %0=cr.irr1" : "=r"(val));
- return val;
- }
- static inline void
- ia64_set_irr2 (__u64 val)
- {
- asm volatile("mov cr.irr2=%0;;" :: "r"(val) : "memory");
- ia64_srlz_d();
- }
- static inline __u64
- ia64_get_irr2 (void)
- {
- __u64 val;
- /* this is volatile because irr may change unbeknownst to gcc... */
- asm volatile("mov %0=cr.irr2" : "=r"(val));
- return val;
- }
- static inline void
- ia64_set_irr3 (__u64 val)
- {
- asm volatile("mov cr.irr3=%0;;" :: "r"(val) : "memory");
- ia64_srlz_d();
- }
- static inline __u64
- ia64_get_irr3 (void)
- {
- __u64 val;
- /* this is volatile because irr may change unbeknownst to gcc... */
- asm volatile ("mov %0=cr.irr3" : "=r"(val));
- return val;
- }
- static inline __u64
- ia64_get_gp(void)
- {
- __u64 val;
- asm ("mov %0=gp" : "=r"(val));
- return val;
- }
- static inline void
- ia64_set_ibr (__u64 regnum, __u64 value)
- {
- asm volatile ("mov ibr[%0]=%1" :: "r"(regnum), "r"(value));
- }
- static inline void
- ia64_set_dbr (__u64 regnum, __u64 value)
- {
- asm volatile ("mov dbr[%0]=%1" :: "r"(regnum), "r"(value));
- #ifdef CONFIG_ITANIUM
- asm volatile (";; srlz.d");
- #endif
- }
- static inline __u64
- ia64_get_ibr (__u64 regnum)
- {
- __u64 retval;
- asm volatile ("mov %0=ibr[%1]" : "=r"(retval) : "r"(regnum));
- return retval;
- }
- static inline __u64
- ia64_get_dbr (__u64 regnum)
- {
- __u64 retval;
- asm volatile ("mov %0=dbr[%1]" : "=r"(retval) : "r"(regnum));
- #ifdef CONFIG_ITANIUM
- asm volatile (";; srlz.d");
- #endif
- return retval;
- }
- /* XXX remove the handcoded version once we have a sufficiently clever compiler... */
- #ifdef SMART_COMPILER
- # define ia64_rotr(w,n)
- ({
- __u64 _w = (w), _n = (n);
-
- (_w >> _n) | (_w << (64 - _n));
- })
- #else
- # define ia64_rotr(w,n)
- ({
- __u64 result;
- asm ("shrp %0=%1,%1,%2" : "=r"(result) : "r"(w), "i"(n));
- result;
- })
- #endif
- #define ia64_rotl(w,n) ia64_rotr((w),(64)-(n))
- static inline __u64
- ia64_thash (__u64 addr)
- {
- __u64 result;
- asm ("thash %0=%1" : "=r"(result) : "r" (addr));
- return result;
- }
- static inline __u64
- ia64_tpa (__u64 addr)
- {
- __u64 result;
- asm ("tpa %0=%1" : "=r"(result) : "r"(addr));
- return result;
- }
- #define ARCH_HAS_PREFETCH
- #define ARCH_HAS_PREFETCHW
- #define ARCH_HAS_SPINLOCK_PREFETCH
- #define PREFETCH_STRIDE 256
- extern inline void
- prefetch (const void *x)
- {
- __asm__ __volatile__ ("lfetch [%0]" : : "r"(x));
- }
- extern inline void
- prefetchw (const void *x)
- {
- __asm__ __volatile__ ("lfetch.excl [%0]" : : "r"(x));
- }
- #define spin_lock_prefetch(x) prefetchw(x)
- #endif /* !__ASSEMBLY__ */
- #endif /* _ASM_IA64_PROCESSOR_H */