/* MN10300 Processor specifics * * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd. * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public Licence * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ #ifndef _ASM_PROCESSOR_H #define _ASM_PROCESSOR_H #include <linux/threads.h> #include <linux/thread_info.h> #include <asm/page.h> #include <asm/ptrace.h> #include <asm/cpu-regs.h> #include <asm/current.h> /* Forward declaration, a strange C thing */ struct task_struct; struct mm_struct; /* * Default implementation of macro that returns current * instruction pointer ("program counter"). */ #define current_text_addr() \ ({ \ void *__pc; \ asm("mov pc,%0" : "=a"(__pc)); \ __pc; \ }) extern void get_mem_info(unsigned long *mem_base, unsigned long *mem_size); extern void show_registers(struct pt_regs *regs); /* * CPU type and hardware bug flags. Kept separately for each CPU. * Members of this structure are referenced in head.S, so think twice * before touching them. [mj] */ struct mn10300_cpuinfo { int type; unsigned long loops_per_jiffy; char hard_math; }; extern struct mn10300_cpuinfo boot_cpu_data; #ifdef CONFIG_SMP #if CONFIG_NR_CPUS < 2 || CONFIG_NR_CPUS > 8 # error Sorry, NR_CPUS should be 2 to 8 #endif extern struct mn10300_cpuinfo cpu_data[]; #define current_cpu_data cpu_data[smp_processor_id()] #else /* CONFIG_SMP */ #define cpu_data &boot_cpu_data #define current_cpu_data boot_cpu_data #endif /* CONFIG_SMP */ extern void identify_cpu(struct mn10300_cpuinfo *); extern void print_cpu_info(struct mn10300_cpuinfo *); extern void dodgy_tsc(void); #define cpu_relax() barrier() /* * User space process size: 1.75GB (default). */ #define TASK_SIZE 0x70000000 /* * Where to put the userspace stack by default */ #define STACK_TOP 0x70000000 #define STACK_TOP_MAX STACK_TOP /* This decides where the kernel will search for a free chunk of vm * space during mmap's. */ #define TASK_UNMAPPED_BASE 0x30000000 struct fpu_state_struct { unsigned long fs[32]; /* fpu registers */ unsigned long fpcr; /* fpu control register */ }; struct thread_struct { struct pt_regs *uregs; /* userspace register frame */ unsigned long pc; /* kernel PC */ unsigned long sp; /* kernel SP */ unsigned long a3; /* kernel FP */ unsigned long wchan; unsigned long usp; unsigned long fpu_flags; #define THREAD_USING_FPU 0x00000001 /* T if this task is using the FPU */ #define THREAD_HAS_FPU 0x00000002 /* T if this task owns the FPU right now */ struct fpu_state_struct fpu_state; }; #define INIT_THREAD \ { \ .uregs = init_uregs, \ .pc = 0, \ .sp = 0, \ .a3 = 0, \ .wchan = 0, \ } #define INIT_MMAP \ { &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, \ NULL, NULL } /* * do necessary setup to start up a newly executed thread */ static inline void start_thread(struct pt_regs *regs, unsigned long new_pc, unsigned long new_sp) { regs->epsw = EPSW_nSL | EPSW_IE | EPSW_IM; regs->pc = new_pc; regs->sp = new_sp; } /* Free all resources held by a thread. */ extern void release_thread(struct task_struct *); unsigned long get_wchan(struct task_struct *p); #define task_pt_regs(task) ((task)->thread.uregs) #define KSTK_EIP(task) (task_pt_regs(task)->pc) #define KSTK_ESP(task) (task_pt_regs(task)->sp) #define KSTK_TOP(info) \ ({ \ (unsigned long)(info) + THREAD_SIZE; \ }) #define ARCH_HAS_PREFETCH #define ARCH_HAS_PREFETCHW static inline void prefetch(const void *x) { #ifdef CONFIG_MN10300_CACHE_ENABLED #ifdef CONFIG_MN10300_PROC_MN103E010 asm volatile ("nop; nop; dcpf (%0)" : : "r"(x)); #else asm volatile ("dcpf (%0)" : : "r"(x)); #endif #endif } static inline void prefetchw(const void *x) { #ifdef CONFIG_MN10300_CACHE_ENABLED #ifdef CONFIG_MN10300_PROC_MN103E010 asm volatile ("nop; nop; dcpf (%0)" : : "r"(x)); #else asm volatile ("dcpf (%0)" : : "r"(x)); #endif #endif } #endif /* _ASM_PROCESSOR_H */
Name | Type | Size | Permission | Actions |
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Kbuild | File | 314 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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atomic.h | File | 4.02 KB | 0644 |
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bitops.h | File | 5.42 KB | 0644 |
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bug.h | File | 864 B | 0644 |
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bugs.h | File | 561 B | 0644 |
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busctl-regs.h | File | 7.8 KB | 0644 |
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cache.h | File | 2.06 KB | 0644 |
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cacheflush.h | File | 7.6 KB | 0644 |
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checksum.h | File | 2.09 KB | 0644 |
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cmpxchg.h | File | 2.65 KB | 0644 |
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cpu-regs.h | File | 16.61 KB | 0644 |
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current.h | File | 922 B | 0644 |
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debugger.h | File | 1.2 KB | 0644 |
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delay.h | File | 597 B | 0644 |
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div64.h | File | 3.21 KB | 0644 |
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dma-mapping.h | File | 636 B | 0644 |
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dma.h | File | 3.09 KB | 0644 |
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dmactl-regs.h | File | 532 B | 0644 |
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elf.h | File | 4.49 KB | 0644 |
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emergency-restart.h | File | 43 B | 0644 |
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exceptions.h | File | 4.74 KB | 0644 |
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fpu.h | File | 3.57 KB | 0644 |
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frame.inc | File | 2.37 KB | 0644 |
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ftrace.h | File | 12 B | 0644 |
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futex.h | File | 31 B | 0644 |
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gdb-stub.h | File | 5.42 KB | 0644 |
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hardirq.h | File | 1.68 KB | 0644 |
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highmem.h | File | 3.01 KB | 0644 |
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hw_irq.h | File | 483 B | 0644 |
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intctl-regs.h | File | 2.26 KB | 0644 |
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io.h | File | 7.67 KB | 0644 |
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irq.h | File | 1.11 KB | 0644 |
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irq_regs.h | File | 751 B | 0644 |
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irqflags.h | File | 4.05 KB | 0644 |
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kdebug.h | File | 561 B | 0644 |
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kgdb.h | File | 1.7 KB | 0644 |
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kmap_types.h | File | 160 B | 0644 |
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kprobes.h | File | 1.59 KB | 0644 |
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linkage.h | File | 593 B | 0644 |
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local.h | File | 31 B | 0644 |
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local64.h | File | 33 B | 0644 |
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mc146818rtc.h | File | 26 B | 0644 |
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mmu.h | File | 434 B | 0644 |
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mmu_context.h | File | 4.44 KB | 0644 |
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module.h | File | 677 B | 0644 |
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nmi.h | File | 500 B | 0644 |
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page.h | File | 3.63 KB | 0644 |
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page_offset.h | File | 302 B | 0644 |
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pci.h | File | 2.17 KB | 0644 |
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percpu.h | File | 32 B | 0644 |
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pgalloc.h | File | 1.49 KB | 0644 |
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pgtable.h | File | 15.68 KB | 0644 |
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pio-regs.h | File | 7.53 KB | 0644 |
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processor.h | File | 4.12 KB | 0644 |
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ptrace.h | File | 805 B | 0644 |
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reset-regs.h | File | 1.8 KB | 0644 |
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rtc-regs.h | File | 3.57 KB | 0644 |
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rtc.h | File | 692 B | 0644 |
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rwlock.h | File | 2.98 KB | 0644 |
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serial-regs.h | File | 8.85 KB | 0644 |
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serial.h | File | 1.02 KB | 0644 |
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setup.h | File | 574 B | 0644 |
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shmparam.h | File | 182 B | 0644 |
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signal.h | File | 888 B | 0644 |
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smp.h | File | 3.06 KB | 0644 |
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smsc911x.h | File | 27 B | 0644 |
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spinlock.h | File | 3.84 KB | 0644 |
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spinlock_types.h | File | 445 B | 0644 |
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string.h | File | 1.03 KB | 0644 |
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switch_to.h | File | 1.49 KB | 0644 |
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syscall.h | File | 2.38 KB | 0644 |
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termios.h | File | 387 B | 0644 |
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thread_info.h | File | 4.36 KB | 0644 |
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timer-regs.h | File | 20.72 KB | 0644 |
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timex.h | File | 843 B | 0644 |
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tlb.h | File | 941 B | 0644 |
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tlbflush.h | File | 3.45 KB | 0644 |
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topology.h | File | 34 B | 0644 |
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types.h | File | 620 B | 0644 |
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uaccess.h | File | 7.78 KB | 0644 |
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ucontext.h | File | 673 B | 0644 |
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unaligned.h | File | 678 B | 0644 |
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unistd.h | File | 1.34 KB | 0644 |
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user.h | File | 1.91 KB | 0644 |
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vga.h | File | 471 B | 0644 |
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xor.h | File | 29 B | 0644 |
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