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Diffstat (limited to 'target/linux/ubicom32/files/arch/ubicom32/include/asm/thread.h')
| -rw-r--r-- | target/linux/ubicom32/files/arch/ubicom32/include/asm/thread.h | 320 |
1 files changed, 0 insertions, 320 deletions
diff --git a/target/linux/ubicom32/files/arch/ubicom32/include/asm/thread.h b/target/linux/ubicom32/files/arch/ubicom32/include/asm/thread.h deleted file mode 100644 index 69c925ea47..0000000000 --- a/target/linux/ubicom32/files/arch/ubicom32/include/asm/thread.h +++ /dev/null @@ -1,320 +0,0 @@ -/* - * arch/ubicom32/include/asm/thread.h - * Ubicom32 architecture specific thread definitions. - * - * (C) Copyright 2009, Ubicom, Inc. - * - * This file is part of the Ubicom32 Linux Kernel Port. - * - * The Ubicom32 Linux Kernel Port is free software: you can redistribute - * it and/or modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation, either version 2 of the - * License, or (at your option) any later version. - * - * The Ubicom32 Linux Kernel Port is distributed in the hope that it - * will be useful, but WITHOUT ANY WARRANTY; without even the implied - * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See - * the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with the Ubicom32 Linux Kernel Port. If not, - * see <http://www.gnu.org/licenses/>. - * - * Ubicom32 implementation derived from (with many thanks): - * arch/m68knommu - * arch/blackfin - * arch/parisc - */ -#ifndef _ASM_UBICOM32_THREAD_H -#define _ASM_UBICOM32_THREAD_H - -#if !defined(__ASSEMBLY__) - -#include <asm/ptrace.h> -#include <asm/ubicom32-common.h> - -typedef int thread_t; -typedef unsigned char thread_type_t; -typedef void (*thread_exec_fn_t)(void *arg); - -#define THREAD_NULL 0x40 -#define THREAD_TYPE_HRT (1 << 0) -#define THREAD_TYPE_SPECIAL 0 -#define THREAD_TYPE_NORMAL 0 -#define THREAD_TYPE_BACKGROUND (1 << 1) - -/* - * This is the upper bound on the maximum hardware threads that one will find - * on a Ubicom processor. It is used to size per hardware thread data structures. - */ -#define THREAD_ARCHITECTURAL_MAX 16 - -/* - * TODO: Rename this at some point to be thread_ - */ -extern unsigned int sw_ksp[THREAD_ARCHITECTURAL_MAX]; - - -/* - * thread_get_self() - */ -static inline thread_t thread_get_self(void) -{ - thread_t result; - - /* - * Note that ROSR has zeroes in bits 6 through 31 and so we don't need - * to do any additional bit masking here. - */ - asm ( - "lsr.4 %0, ROSR, #2 \n\t" - : "=d" (result) - : - : "cc" - ); - - return result; -} - -/* - * thread_suspend() - */ -static inline void thread_suspend(void) -{ - asm volatile ( - "suspend\n\t" - : - : - ); -} - -/* - * thread_resume() - */ -static inline void thread_resume(thread_t thread) -{ - asm volatile ( - "move.4 MT_ACTIVE_SET, %0 \n\t" - "pipe_flush 0 \n\t" - "pipe_flush 0 \n\t" - : - : "d" (1 << thread) - ); -} - - - -/* - * thread_enable_mask() - * Enable all threads in the mask. - * - * All writes to MT_EN must be protected by the MT_EN_LOCK bit - */ -static inline void thread_enable_mask(unsigned int mask) -{ - /* - * must flush the pipeline twice. - * first pipe_flush is to ensure write to MT_EN is completed - * second one is to ensure any new instructions from - * the targeted thread (the one being disabled), that - * are issued while the write to MT_EN is being executed, - * are completed. - */ - UBICOM32_LOCK(MT_EN_LOCK_BIT); - asm volatile ( - "or.4 MT_EN, MT_EN, %0 \n\t" - "pipe_flush 0 \n\t" - "pipe_flush 0 \n\t" - : - : "d" (mask) - : "cc" - ); - UBICOM32_UNLOCK(MT_EN_LOCK_BIT); -} - -/* - * thread_enable() - */ -static inline void thread_enable(thread_t thread) -{ - thread_enable_mask(1 << thread); -} - -/* - * thread_disable_mask() - * Disable all threads in the mask. - * - * All writes to MT_EN must be protected by the MT_EN_LOCK bit - */ -static inline void thread_disable_mask(unsigned int mask) -{ - /* - * must flush the pipeline twice. - * first pipe_flush is to ensure write to MT_EN is completed - * second one is to ensure any new instructions from - * the targeted thread (the one being disabled), that - * are issued while the write to MT_EN is being executed, - * are completed. - */ - UBICOM32_LOCK(MT_EN_LOCK_BIT); - asm volatile ( - "and.4 MT_EN, MT_EN, %0 \n\t" - "pipe_flush 0 \n\t" - "pipe_flush 0 \n\t" - : - : "d" (~mask) - : "cc" - ); - UBICOM32_UNLOCK(MT_EN_LOCK_BIT); -} - -/* - * thread_disable() - */ -static inline void thread_disable(thread_t thread) -{ - thread_disable_mask(1 << thread); -} - -/* - * thread_disable_others() - * Disable all other threads - */ -static inline void thread_disable_others(void) -{ - thread_t self = thread_get_self(); - thread_disable_mask(~(1 << self)); -} - -/* - * thread_is_trapped() - * Is the specified tid trapped? - */ -static inline int thread_is_trapped(thread_t tid) -{ - int thread_mask = (1 << tid); - int trap_thread; - - asm ( - "move.4 %0, MT_TRAP \n\t" - : "=d" (trap_thread) - : - ); - return (trap_thread & thread_mask); -} - -/* - * thread_is_enabled() - * Is the specified tid enabled? - */ -static inline int thread_is_enabled(thread_t tid) -{ - int thread_mask = (1 << tid); - int enabled_threads; - - asm ( - "move.4 %0, MT_EN \n\t" - : "=d" (enabled_threads) - : - ); - return (enabled_threads & thread_mask); -} - -/* - * thread_get_instruction_count() - */ -static inline unsigned int thread_get_instruction_count(void) -{ - unsigned int result; - asm ( - "move.4 %0, INST_CNT \n\t" - : "=r" (result) - ); - return result; -} - -/* - * thread_get_pc() - * pc could point to a speculative and cancelled instruction unless thread is disabled - */ -static inline void *thread_get_pc(thread_t thread) -{ - void *result; - asm ( - "move.4 csr, %1 \n\t" - "setcsr_flush 0 \n\t" - "move.4 %0, pc \n\t" - "move.4 csr, #0 \n\t" - "setcsr_flush 0 \n\t" - : "=r" (result) - : "r" ((thread << 9) | (1 << 8)) - ); - return result; -} - -/* - * thread_get_trap_cause() - * This should be called only when the thread is not running - */ -static inline unsigned int thread_get_trap_cause(thread_t thread) -{ - unsigned int result; - asm ( - "move.4 csr, %1 \n\t" - "setcsr_flush 0 \n\t" - "move.4 %0, trap_cause \n\t" - "move.4 csr, #0 \n\t" - "setcsr_flush 0 \n\t" - : "=r" (result) - : "r" ((thread << 9) | (1 << 8)) - ); - return result; -} - -/* - * THREAD_STALL macro. - */ -#define THREAD_STALL \ - asm volatile ( \ - "move.4 mt_dbg_active_clr, #-1 \n\t" \ - "pipe_flush 0 \n\t" \ - : \ - : \ - ) - -extern unsigned int thread_get_mainline(void); -extern void thread_set_mainline(thread_t tid); -extern thread_t thread_alloc(void); -extern thread_t thread_start(thread_t thread, thread_exec_fn_t exec, void *arg, unsigned int *sp_high, thread_type_t type); - -/* - * asm macros - */ -asm ( -/* - * thread_get_self - * Read and shift the current thread into reg - * - * Note that we don't need to mask the result as bits 6 through 31 of the - * ROSR are zeroes. - */ -".macro thread_get_self reg \n\t" -" lsr.4 \\reg, ROSR, #2 \n\t" -".endm \n\t" - -/* - * thread_get_self_mask - * Read and shift the current thread mask into reg - */ -".macro thread_get_self_mask reg \n\t" -" lsr.4 \\reg, ROSR, #2 \n\t" -" lsl.4 \\reg, #1, \\reg \n\t" /* Thread bit */ -".endm \n\t" -); - -#else /* __ASSEMBLY__ */ - -#include <asm/thread-asm.h> - -#endif /* __ASSEMBLY__ */ -#endif /* _ASM_UBICOM32_THREAD_H */ |