parisc: move include/asm-parisc to arch/parisc/include/asm

1 files changed, 357 insertions, 0 deletions

diff --git a/arch/parisc/include/asm/processor.h b/arch/parisc/include/asm/processor.h
new file mode 100644
index 0000000..3c9d348
--- /dev/null
+++ b/arch/parisc/include/asm/processor.h
@@ -0,0 +1,357 @@
+/*
+ * include/asm-parisc/processor.h
+ *
+ * Copyright (C) 1994 Linus Torvalds
+ * Copyright (C) 2001 Grant Grundler
+ */
+
+#ifndef __ASM_PARISC_PROCESSOR_H
+#define __ASM_PARISC_PROCESSOR_H
+
+#ifndef __ASSEMBLY__
+#include <linux/threads.h>
+
+#include <asm/prefetch.h>
+#include <asm/hardware.h>
+#include <asm/pdc.h>
+#include <asm/ptrace.h>
+#include <asm/types.h>
+#include <asm/system.h>
+#endif /* __ASSEMBLY__ */
+
+#define KERNEL_STACK_SIZE 	(4*PAGE_SIZE)
+
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#ifdef CONFIG_PA20
+#define current_ia(x)	__asm__("mfia %0" : "=r"(x))
+#else /* mfia added in pa2.0 */
+#define current_ia(x)	__asm__("blr 0,%0\n\tnop" : "=r"(x))
+#endif
+#define current_text_addr() ({ void *pc; current_ia(pc); pc; })
+
+#define TASK_SIZE_OF(tsk)       ((tsk)->thread.task_size)
+#define TASK_SIZE	        TASK_SIZE_OF(current)
+#define TASK_UNMAPPED_BASE      (current->thread.map_base)
+
+#define DEFAULT_TASK_SIZE32	(0xFFF00000UL)
+#define DEFAULT_MAP_BASE32	(0x40000000UL)
+
+#ifdef CONFIG_64BIT
+#define DEFAULT_TASK_SIZE       (MAX_ADDRESS-0xf000000)
+#define DEFAULT_MAP_BASE        (0x200000000UL)
+#else
+#define DEFAULT_TASK_SIZE	DEFAULT_TASK_SIZE32
+#define DEFAULT_MAP_BASE	DEFAULT_MAP_BASE32
+#endif
+
+#ifdef __KERNEL__
+
+/* XXX: STACK_TOP actually should be STACK_BOTTOM for parisc.
+ * prumpf */
+
+#define STACK_TOP	TASK_SIZE
+#define STACK_TOP_MAX	DEFAULT_TASK_SIZE
+
+#endif
+
+#ifndef __ASSEMBLY__
+
+/*
+ * Data detected about CPUs at boot time which is the same for all CPU's.
+ * HP boxes are SMP - ie identical processors.
+ *
+ * FIXME: some CPU rev info may be processor specific...
+ */
+struct system_cpuinfo_parisc {
+	unsigned int	cpu_count;
+	unsigned int	cpu_hz;
+	unsigned int	hversion;
+	unsigned int	sversion;
+	enum cpu_type	cpu_type;
+
+	struct {
+		struct pdc_model model;
+		unsigned long versions;
+		unsigned long cpuid;
+		unsigned long capabilities;
+		char   sys_model_name[81]; /* PDC-ROM returnes this model name */
+	} pdc;
+
+	const char	*cpu_name;	/* e.g. "PA7300LC (PCX-L2)" */
+	const char	*family_name;	/* e.g. "1.1e" */
+};
+
+
+/* Per CPU data structure - ie varies per CPU.  */
+struct cpuinfo_parisc {
+	unsigned long it_value;     /* Interval Timer at last timer Intr */
+	unsigned long it_delta;     /* Interval delta (tic_10ms / HZ * 100) */
+	unsigned long irq_count;    /* number of IRQ's since boot */
+	unsigned long irq_max_cr16; /* longest time to handle a single IRQ */
+	unsigned long cpuid;        /* aka slot_number or set to NO_PROC_ID */
+	unsigned long hpa;          /* Host Physical address */
+	unsigned long txn_addr;     /* MMIO addr of EIR or id_eid */
+#ifdef CONFIG_SMP
+	unsigned long pending_ipi;  /* bitmap of type ipi_message_type */
+	unsigned long ipi_count;    /* number ipi Interrupts */
+#endif
+	unsigned long bh_count;     /* number of times bh was invoked */
+	unsigned long prof_counter; /* per CPU profiling support */
+	unsigned long prof_multiplier;	/* per CPU profiling support */
+	unsigned long fp_rev;
+	unsigned long fp_model;
+	unsigned int state;
+	struct parisc_device *dev;
+	unsigned long loops_per_jiffy;
+};
+
+extern struct system_cpuinfo_parisc boot_cpu_data;
+extern struct cpuinfo_parisc cpu_data[NR_CPUS];
+#define current_cpu_data cpu_data[smp_processor_id()]
+
+#define CPU_HVERSION ((boot_cpu_data.hversion >> 4) & 0x0FFF)
+
+typedef struct {
+	int seg;  
+} mm_segment_t;
+
+#define ARCH_MIN_TASKALIGN	8
+
+struct thread_struct {
+	struct pt_regs regs;
+	unsigned long  task_size;
+	unsigned long  map_base;
+	unsigned long  flags;
+}; 
+
+/* Thread struct flags. */
+#define PARISC_UAC_NOPRINT	(1UL << 0)	/* see prctl and unaligned.c */
+#define PARISC_UAC_SIGBUS	(1UL << 1)
+#define PARISC_KERNEL_DEATH	(1UL << 31)	/* see die_if_kernel()... */
+
+#define PARISC_UAC_SHIFT	0
+#define PARISC_UAC_MASK		(PARISC_UAC_NOPRINT|PARISC_UAC_SIGBUS)
+
+#define SET_UNALIGN_CTL(task,value)                                       \
+        ({                                                                \
+        (task)->thread.flags = (((task)->thread.flags & ~PARISC_UAC_MASK) \
+                                | (((value) << PARISC_UAC_SHIFT) &        \
+                                   PARISC_UAC_MASK));                     \
+        0;                                                                \
+        })
+
+#define GET_UNALIGN_CTL(task,addr)                                        \
+        ({                                                                \
+        put_user(((task)->thread.flags & PARISC_UAC_MASK)                 \
+                 >> PARISC_UAC_SHIFT, (int __user *) (addr));             \
+        })
+
+#define INIT_THREAD { \
+	.regs = {	.gr	= { 0, }, \
+			.fr	= { 0, }, \
+			.sr	= { 0, }, \
+			.iasq	= { 0, }, \
+			.iaoq	= { 0, }, \
+			.cr27	= 0, \
+		}, \
+	.task_size	= DEFAULT_TASK_SIZE, \
+	.map_base	= DEFAULT_MAP_BASE, \
+	.flags		= 0 \
+	}
+
+/*
+ * Return saved PC of a blocked thread.  This is used by ps mostly.
+ */
+
+unsigned long thread_saved_pc(struct task_struct *t);
+void show_trace(struct task_struct *task, unsigned long *stack);
+
+/*
+ * Start user thread in another space.
+ *
+ * Note that we set both the iaoq and r31 to the new pc. When
+ * the kernel initially calls execve it will return through an
+ * rfi path that will use the values in the iaoq. The execve
+ * syscall path will return through the gateway page, and
+ * that uses r31 to branch to.
+ *
+ * For ELF we clear r23, because the dynamic linker uses it to pass
+ * the address of the finalizer function.
+ *
+ * We also initialize sr3 to an illegal value (illegal for our
+ * implementation, not for the architecture).
+ */
+typedef unsigned int elf_caddr_t;
+
+#define start_thread_som(regs, new_pc, new_sp) do {	\
+	unsigned long *sp = (unsigned long *)new_sp;	\
+	__u32 spaceid = (__u32)current->mm->context;	\
+	unsigned long pc = (unsigned long)new_pc;	\
+	/* offset pc for priv. level */			\
+	pc |= 3;					\
+							\
+	set_fs(USER_DS);				\
+	regs->iasq[0] = spaceid;			\
+	regs->iasq[1] = spaceid;			\
+	regs->iaoq[0] = pc;				\
+	regs->iaoq[1] = pc + 4;                         \
+	regs->sr[2] = LINUX_GATEWAY_SPACE;              \
+	regs->sr[3] = 0xffff;				\
+	regs->sr[4] = spaceid;				\
+	regs->sr[5] = spaceid;				\
+	regs->sr[6] = spaceid;				\
+	regs->sr[7] = spaceid;				\
+	regs->gr[ 0] = USER_PSW;                        \
+	regs->gr[30] = ((new_sp)+63)&~63;		\
+	regs->gr[31] = pc;				\
+							\
+	get_user(regs->gr[26],&sp[0]);			\
+	get_user(regs->gr[25],&sp[-1]); 		\
+	get_user(regs->gr[24],&sp[-2]); 		\
+	get_user(regs->gr[23],&sp[-3]); 		\
+} while(0)
+
+/* The ELF abi wants things done a "wee bit" differently than
+ * som does.  Supporting this behavior here avoids
+ * having our own version of create_elf_tables.
+ *
+ * Oh, and yes, that is not a typo, we are really passing argc in r25
+ * and argv in r24 (rather than r26 and r25).  This is because that's
+ * where __libc_start_main wants them.
+ *
+ * Duplicated from dl-machine.h for the benefit of readers:
+ *
+ *  Our initial stack layout is rather different from everyone else's
+ *  due to the unique PA-RISC ABI.  As far as I know it looks like
+ *  this:
+
+   -----------------------------------  (user startup code creates this frame)
+   |         32 bytes of magic       |
+   |---------------------------------|
+   | 32 bytes argument/sp save area  |
+   |---------------------------------| (bprm->p)
+   |	    ELF auxiliary info	     |
+   |         (up to 28 words)        |
+   |---------------------------------|
+   |		   NULL		     |
+   |---------------------------------|
+   |	   Environment pointers	     |
+   |---------------------------------|
+   |		   NULL		     |
+   |---------------------------------|
+   |        Argument pointers        |
+   |---------------------------------| <- argv
+   |          argc (1 word)          |
+   |---------------------------------| <- bprm->exec (HACK!)
+   |         N bytes of slack        |
+   |---------------------------------|
+   |	filename passed to execve    |
+   |---------------------------------| (mm->env_end)
+   |           env strings           |
+   |---------------------------------| (mm->env_start, mm->arg_end)
+   |           arg strings           |
+   |---------------------------------|
+   | additional faked arg strings if |
+   | we're invoked via binfmt_script |
+   |---------------------------------| (mm->arg_start)
+   stack base is at TASK_SIZE - rlim_max.
+
+on downward growing arches, it looks like this:
+   stack base at TASK_SIZE
+   | filename passed to execve
+   | env strings
+   | arg strings
+   | faked arg strings
+   | slack
+   | ELF
+   | envps
+   | argvs
+   | argc
+
+ *  The pleasant part of this is that if we need to skip arguments we
+ *  can just decrement argc and move argv, because the stack pointer
+ *  is utterly unrelated to the location of the environment and
+ *  argument vectors.
+ *
+ * Note that the S/390 people took the easy way out and hacked their
+ * GCC to make the stack grow downwards.
+ *
+ * Final Note: For entry from syscall, the W (wide) bit of the PSW
+ * is stuffed into the lowest bit of the user sp (%r30), so we fill
+ * it in here from the current->personality
+ */
+
+#ifdef CONFIG_64BIT
+#define USER_WIDE_MODE	(!test_thread_flag(TIF_32BIT))
+#else
+#define USER_WIDE_MODE	0
+#endif
+
+#define start_thread(regs, new_pc, new_sp) do {		\
+	elf_addr_t *sp = (elf_addr_t *)new_sp;		\
+	__u32 spaceid = (__u32)current->mm->context;	\
+	elf_addr_t pc = (elf_addr_t)new_pc | 3;		\
+	elf_caddr_t *argv = (elf_caddr_t *)bprm->exec + 1;	\
+							\
+	set_fs(USER_DS);				\
+	regs->iasq[0] = spaceid;			\
+	regs->iasq[1] = spaceid;			\
+	regs->iaoq[0] = pc;				\
+	regs->iaoq[1] = pc + 4;                         \
+	regs->sr[2] = LINUX_GATEWAY_SPACE;              \
+	regs->sr[3] = 0xffff;				\
+	regs->sr[4] = spaceid;				\
+	regs->sr[5] = spaceid;				\
+	regs->sr[6] = spaceid;				\
+	regs->sr[7] = spaceid;				\
+	regs->gr[ 0] = USER_PSW | (USER_WIDE_MODE ? PSW_W : 0); \
+	regs->fr[ 0] = 0LL;                            	\
+	regs->fr[ 1] = 0LL;                            	\
+	regs->fr[ 2] = 0LL;                            	\
+	regs->fr[ 3] = 0LL;                            	\
+	regs->gr[30] = (((unsigned long)sp + 63) &~ 63) | (USER_WIDE_MODE ? 1 : 0); \
+	regs->gr[31] = pc;				\
+							\
+	get_user(regs->gr[25], (argv - 1));		\
+	regs->gr[24] = (long) argv;			\
+	regs->gr[23] = 0;				\
+} while(0)
+
+struct task_struct;
+struct mm_struct;
+
+/* Free all resources held by a thread. */
+extern void release_thread(struct task_struct *);
+extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
+
+/* Prepare to copy thread state - unlazy all lazy status */
+#define prepare_to_copy(tsk)	do { } while (0)
+
+extern void map_hpux_gateway_page(struct task_struct *tsk, struct mm_struct *mm);
+
+extern unsigned long get_wchan(struct task_struct *p);
+
+#define KSTK_EIP(tsk)	((tsk)->thread.regs.iaoq[0])
+#define KSTK_ESP(tsk)	((tsk)->thread.regs.gr[30])
+
+#define cpu_relax()	barrier()
+
+/* Used as a macro to identify the combined VIPT/PIPT cached
+ * CPUs which require a guarantee of coherency (no inequivalent
+ * aliases with different data, whether clean or not) to operate */
+static inline int parisc_requires_coherency(void)
+{
+#ifdef CONFIG_PA8X00
+	return (boot_cpu_data.cpu_type == mako) ||
+		(boot_cpu_data.cpu_type == mako2);
+#else
+	return 0;
+#endif
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __ASM_PARISC_PROCESSOR_H */