/* * Port on Texas Instruments TMS320C6x architecture * * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) * * Updated for 2.6.34: Mark Salter <msalter@redhat.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef _ASM_C6X_PROCESSOR_H #define _ASM_C6X_PROCESSOR_H #include <asm/ptrace.h> #include <asm/page.h> #include <asm/current.h> /* * Default implementation of macro that returns current * instruction pointer ("program counter"). */ #define current_text_addr() \ ({ \ void *__pc; \ asm("mvc .S2 pce1,%0\n" : "=b"(__pc)); \ __pc; \ }) /* * User space process size. This is mostly meaningless for NOMMU * but some C6X processors may have RAM addresses up to 0xFFFFFFFF. * Since calls like mmap() can return an address or an error, we * have to allow room for error returns when code does something * like: * * addr = do_mmap(...) * if ((unsigned long)addr >= TASK_SIZE) * ... its an error code, not an address ... * * Here, we allow for 4096 error codes which means we really can't * use the last 4K page on systems with RAM extending all the way * to the end of the 32-bit address space. */ #define TASK_SIZE 0xFFFFF000 /* * This decides where the kernel will search for a free chunk of vm * space during mmap's. We won't be using it */ #define TASK_UNMAPPED_BASE 0 struct thread_struct { unsigned long long b15_14; unsigned long long a15_14; unsigned long long b13_12; unsigned long long a13_12; unsigned long long b11_10; unsigned long long a11_10; unsigned long long ricl_icl; unsigned long usp; /* user stack pointer */ unsigned long pc; /* kernel pc */ unsigned long wchan; }; #define INIT_THREAD \ { \ .usp = 0, \ .wchan = 0, \ } #define INIT_MMAP { \ &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, \ NULL, NULL } #define task_pt_regs(task) \ ((struct pt_regs *)(THREAD_START_SP + task_stack_page(task)) - 1) #define alloc_kernel_stack() __get_free_page(GFP_KERNEL) #define free_kernel_stack(page) free_page((page)) /* Forward declaration, a strange C thing */ struct task_struct; extern void start_thread(struct pt_regs *regs, unsigned int pc, unsigned long usp); /* Free all resources held by a thread. */ static inline void release_thread(struct task_struct *dead_task) { } /* * saved kernel SP and DP of a blocked thread. */ #ifdef _BIG_ENDIAN #define thread_saved_ksp(tsk) \ (*(unsigned long *)&(tsk)->thread.b15_14) #define thread_saved_dp(tsk) \ (*(((unsigned long *)&(tsk)->thread.b15_14) + 1)) #else #define thread_saved_ksp(tsk) \ (*(((unsigned long *)&(tsk)->thread.b15_14) + 1)) #define thread_saved_dp(tsk) \ (*(unsigned long *)&(tsk)->thread.b15_14) #endif extern unsigned long get_wchan(struct task_struct *p); #define KSTK_EIP(task) (task_pt_regs(task)->pc) #define KSTK_ESP(task) (task_pt_regs(task)->sp) #define cpu_relax() do { } while (0) extern const struct seq_operations cpuinfo_op; /* Reset the board */ #define HARD_RESET_NOW() extern unsigned int c6x_core_freq; extern void (*c6x_restart)(void); extern void (*c6x_halt)(void); #endif /* ASM_C6X_PROCESSOR_H */
Name | Type | Size | Permission | Actions |
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Kbuild | File | 865 B | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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bitops.h | File | 2.17 KB | 0644 |
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bug.h | File | 705 B | 0644 |
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cache.h | File | 3.1 KB | 0644 |
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cacheflush.h | File | 2.05 KB | 0644 |
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checksum.h | File | 947 B | 0644 |
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clock.h | File | 3.51 KB | 0644 |
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cmpxchg.h | File | 1.57 KB | 0644 |
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delay.h | File | 1.67 KB | 0644 |
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dma-mapping.h | File | 911 B | 0644 |
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dscr.h | File | 909 B | 0644 |
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elf.h | File | 3.18 KB | 0644 |
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flat.h | File | 677 B | 0644 |
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ftrace.h | File | 97 B | 0644 |
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hardirq.h | File | 572 B | 0644 |
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irq.h | File | 1.59 KB | 0644 |
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irqflags.h | File | 1.67 KB | 0644 |
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linkage.h | File | 497 B | 0644 |
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megamod-pic.h | File | 213 B | 0644 |
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module.h | File | 639 B | 0644 |
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page.h | File | 312 B | 0644 |
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pgtable.h | File | 2.29 KB | 0644 |
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processor.h | File | 3.31 KB | 0644 |
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procinfo.h | File | 673 B | 0644 |
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ptrace.h | File | 998 B | 0644 |
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sections.h | File | 287 B | 0644 |
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setup.h | File | 914 B | 0644 |
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soc.h | File | 929 B | 0644 |
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special_insns.h | File | 1.82 KB | 0644 |
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string.h | File | 616 B | 0644 |
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switch_to.h | File | 992 B | 0644 |
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syscall.h | File | 2.2 KB | 0644 |
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syscalls.h | File | 1.73 KB | 0644 |
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thread_info.h | File | 2.63 KB | 0644 |
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timer64.h | File | 154 B | 0644 |
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timex.h | File | 867 B | 0644 |
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tlb.h | File | 192 B | 0644 |
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traps.h | File | 1.29 KB | 0644 |
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uaccess.h | File | 2.14 KB | 0644 |
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unaligned.h | File | 4.63 KB | 0644 |
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