ARC: [SMP] Enable icache coherency (2328af0c) · Commits · 戴 / test

arch/arc/mm/cache_arc700.c

+19 −6

Original line number	Original line	Diff line number	Diff line
	@@ -389,7 +389,7 @@ static inline void __dc_line_op(unsigned long paddr, unsigned long vaddr,
	/***********************************************************		/***********************************************************
	* Machine specific helper for per line I-Cache invalidate.		* Machine specific helper for per line I-Cache invalidate.
	*/		*/
	static void __ic_line_inv_vaddr(unsigned long paddr, unsigned long vaddr,		static void __ic_line_inv_vaddr_local(unsigned long paddr, unsigned long vaddr,
	unsigned long sz)		unsigned long sz)
	{		{
	unsigned long flags;		unsigned long flags;
	@@ -405,6 +405,23 @@ static inline void __ic_entire_inv(void)
	read_aux_reg(ARC_REG_IC_CTRL); /* blocks */		read_aux_reg(ARC_REG_IC_CTRL); /* blocks */
	}		}

			struct ic_line_inv_vaddr_ipi {
			unsigned long paddr, vaddr;
			int sz;
			};

			static void __ic_line_inv_vaddr_helper(void *info)
			{
			struct ic_line_inv_vaddr_ipi ic_inv = (struct ic_line_inv_vaddr_ipi) info;
			__ic_line_inv_vaddr_local(ic_inv->paddr, ic_inv->vaddr, ic_inv->sz);
			}

			static void __ic_line_inv_vaddr(unsigned long paddr, unsigned long vaddr,
			unsigned long sz)
			{
			struct ic_line_inv_vaddr_ipi ic_inv = { paddr, vaddr , sz};
			on_each_cpu(__ic_line_inv_vaddr_helper, &ic_inv, 1);
			}
	#else		#else

	#define __ic_entire_inv()		#define __ic_entire_inv()
	@@ -553,12 +570,8 @@ void flush_icache_range(unsigned long kstart, unsigned long kend)
	*/		*/
	void __sync_icache_dcache(unsigned long paddr, unsigned long vaddr, int len)		void __sync_icache_dcache(unsigned long paddr, unsigned long vaddr, int len)
	{		{
	unsigned long flags;

	local_irq_save(flags);
	__ic_line_inv_vaddr(paddr, vaddr, len);
	__dc_line_op(paddr, vaddr, len, OP_FLUSH_N_INV);		__dc_line_op(paddr, vaddr, len, OP_FLUSH_N_INV);
	local_irq_restore(flags);		__ic_line_inv_vaddr(paddr, vaddr, len);
	}		}

	/* wrapper to compile time eliminate alignment checks in flush loop */		/* wrapper to compile time eliminate alignment checks in flush loop */

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