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/*
 * Copyright 2004-2009 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#ifndef __ASM_BFIN_PROCESSOR_H
#define __ASM_BFIN_PROCESSOR_H

/*
 * Default implementation of macro that returns current
 * instruction pointer ("program counter").
 */
#define current_text_addr() ({ __label__ _l; _l: &&_l;})

#include <asm/ptrace.h>
#include <mach/blackfin.h>

static inline unsigned long rdusp(void)
{
	unsigned long usp;

	__asm__ __volatile__("%0 = usp;\n\t":"=da"(usp));
	return usp;
}

static inline void wrusp(unsigned long usp)
{
	__asm__ __volatile__("usp = %0;\n\t"::"da"(usp));
}

static inline unsigned long __get_SP(void)
{
	unsigned long sp;

	__asm__ __volatile__("%0 = sp;\n\t" : "=da"(sp));
	return sp;
}

/*
 * User space process size: 1st byte beyond user address space.
 * Fairly meaningless on nommu.  Parts of user programs can be scattered
 * in a lot of places, so just disable this by setting it to 0xFFFFFFFF.
 */
#define TASK_SIZE	0xFFFFFFFF

#ifdef __KERNEL__
#define STACK_TOP	TASK_SIZE
#endif

#define TASK_UNMAPPED_BASE	0

struct thread_struct {
	unsigned long ksp;	/* kernel stack pointer */
	unsigned long usp;	/* user stack pointer */
	unsigned short seqstat;	/* saved status register */
	unsigned long esp0;	/* points to SR of stack frame pt_regs */
	unsigned long pc;	/* instruction pointer */
	void *        debuggerinfo;
};

#define INIT_THREAD  {						\
	sizeof(init_stack) + (unsigned long) init_stack, 0,	\
	PS_S, 0, 0						\
}

extern void start_thread(struct pt_regs *regs, unsigned long new_ip,
					       unsigned long new_sp);

/* Forward declaration, a strange C thing */
struct task_struct;

/* Free all resources held by a thread. */
static inline void release_thread(struct task_struct *dead_task)
{
}

unsigned long get_wchan(struct task_struct *p);

#define	KSTK_EIP(tsk)							\
    ({									\
	unsigned long eip = 0;						\
	if ((tsk)->thread.esp0 > PAGE_SIZE &&				\
	    MAP_NR((tsk)->thread.esp0) < max_mapnr)			\
	      eip = ((struct pt_regs *) (tsk)->thread.esp0)->pc;	\
	eip; })
#define	KSTK_ESP(tsk)	((tsk) == current ? rdusp() : (tsk)->thread.usp)

#define cpu_relax()    	smp_mb()

/* Get the Silicon Revision of the chip */
static inline uint32_t __pure bfin_revid(void)
{
	/* Always use CHIPID, to work around ANOMALY_05000234 */
	uint32_t revid = (bfin_read_CHIPID() & CHIPID_VERSION) >> 28;

#ifdef _BOOTROM_GET_DXE_ADDRESS_TWI
	/*
	 * ANOMALY_05000364
	 * Incorrect Revision Number in DSPID Register
	 */
	if (ANOMALY_05000364 &&
	    bfin_read16(_BOOTROM_GET_DXE_ADDRESS_TWI) == 0x2796)
		revid = 1;
#endif

	return revid;
}

static inline uint16_t __pure bfin_cpuid(void)
{
	return (bfin_read_CHIPID() & CHIPID_FAMILY) >> 12;
}

static inline uint32_t __pure bfin_dspid(void)
{
	return bfin_read_DSPID();
}

#define blackfin_core_id() (bfin_dspid() & 0xff)

static inline uint32_t __pure bfin_compiled_revid(void)
{
#if defined(CONFIG_BF_REV_0_0)
	return 0;
#elif defined(CONFIG_BF_REV_0_1)
	return 1;
#elif defined(CONFIG_BF_REV_0_2)
	return 2;
#elif defined(CONFIG_BF_REV_0_3)
	return 3;
#elif defined(CONFIG_BF_REV_0_4)
	return 4;
#elif defined(CONFIG_BF_REV_0_5)
	return 5;
#elif defined(CONFIG_BF_REV_0_6)
	return 6;
#elif defined(CONFIG_BF_REV_ANY)
	return 0xffff;
#else
	return -1;
#endif
}

#endif

Filemanager

Name Type Size Permission Actions
Kbuild File 658 B 0644
asm-offsets.h File 35 B 0644
atomic.h File 1.55 KB 0644
barrier.h File 2.55 KB 0644
bfin-global.h File 2.8 KB 0644
bfin-lq035q1.h File 868 B 0644
bfin5xx_spi.h File 2.07 KB 0644
bfin_can.h File 36.04 KB 0644
bfin_dma.h File 5.46 KB 0644
bfin_pfmon.h File 1.11 KB 0644
bfin_ppi.h File 9.01 KB 0644
bfin_sdh.h File 7.2 KB 0644
bfin_serial.h File 17.02 KB 0644
bfin_simple_timer.h File 949 B 0644
bfin_sport.h File 1.21 KB 0644
bfin_sport3.h File 5.47 KB 0644
bfin_twi.h File 6.25 KB 0644
bfin_watchdog.h File 696 B 0644
bfrom.h File 3.36 KB 0644
bitops.h File 3.45 KB 0644
blackfin.h File 1.55 KB 0644
bug.h File 1.49 KB 0644
cache.h File 1.47 KB 0644
cacheflush.h File 3.79 KB 0644
cdef_LPBlackfin.h File 18.93 KB 0644
checksum.h File 899 B 0644
clkdev.h File 318 B 0644
clocks.h File 1.66 KB 0644
cmpxchg.h File 3.2 KB 0644
context.S File 5.92 KB 0644
cplb.h File 4.86 KB 0644
cplbinit.h File 1.6 KB 0644
cpu.h File 443 B 0644
def_LPBlackfin.h File 28.6 KB 0644
delay.h File 917 B 0644
dma-mapping.h File 1.09 KB 0644
dma.h File 9.28 KB 0644
dpmc.h File 18.24 KB 0644
early_printk.h File 1.09 KB 0644
elf.h File 4.88 KB 0644
entry.h File 5.27 KB 0644
exec.h File 37 B 0644
fixed_code.h File 806 B 0644
flat.h File 1.41 KB 0644
ftrace.h File 1.37 KB 0644
gpio.h File 5.91 KB 0644
gptimers.h File 8.95 KB 0644
hardirq.h File 301 B 0644
io.h File 1.52 KB 0644
ipipe.h File 5.81 KB 0644
ipipe_base.h File 2.38 KB 0644
irq.h File 879 B 0644
irq_handler.h File 1.93 KB 0644
irqflags.h File 7.13 KB 0644
kgdb.h File 3.23 KB 0644
l1layout.h File 879 B 0644
linkage.h File 205 B 0644
mem_init.h File 13.1 KB 0644
mem_map.h File 1.73 KB 0644
mmu.h File 713 B 0644
mmu_context.h File 5.35 KB 0644
module.h File 410 B 0644
nand.h File 895 B 0644
nmi.h File 195 B 0644
page.h File 546 B 0644
page_offset.h File 192 B 0644
pci.h File 310 B 0644
pda.h File 1.86 KB 0644
perf_event.h File 23 B 0644
pgtable.h File 3 KB 0644
pm.h File 590 B 0644
portmux.h File 16.38 KB 0644
processor.h File 3.21 KB 0644
pseudo_instructions.h File 391 B 0644
ptrace.h File 1.19 KB 0644
reboot.h File 446 B 0644
rwlock.h File 142 B 0644
scb.h File 445 B 0644
sections.h File 2 KB 0644
segment.h File 226 B 0644
smp.h File 1.34 KB 0644
spinlock.h File 1.87 KB 0644
spinlock_types.h File 495 B 0644
string.h File 1.04 KB 0644
switch_to.h File 997 B 0644
syscall.h File 2.15 KB 0644
thread_info.h File 2.66 KB 0644
time.h File 1.33 KB 0644
timex.h File 477 B 0644
tlb.h File 481 B 0644
tlbflush.h File 88 B 0644
trace.h File 2.67 KB 0644
traps.h File 4.87 KB 0644
uaccess.h File 5.79 KB 0644
unistd.h File 523 B 0644
vga.h File 29 B 0644