100a9730eSGuo Ren // SPDX-License-Identifier: GPL-2.0 200a9730eSGuo Ren // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. 300a9730eSGuo Ren 400a9730eSGuo Ren #include <linux/cache.h> 500a9730eSGuo Ren #include <linux/highmem.h> 600a9730eSGuo Ren #include <linux/mm.h> 700a9730eSGuo Ren #include <asm/cache.h> 800a9730eSGuo Ren 900a9730eSGuo Ren void flush_icache_page(struct vm_area_struct *vma, struct page *page) 1000a9730eSGuo Ren { 1100a9730eSGuo Ren unsigned long start; 1200a9730eSGuo Ren 1300a9730eSGuo Ren start = (unsigned long) kmap_atomic(page); 1400a9730eSGuo Ren 1500a9730eSGuo Ren cache_wbinv_range(start, start + PAGE_SIZE); 1600a9730eSGuo Ren 1700a9730eSGuo Ren kunmap_atomic((void *)start); 1800a9730eSGuo Ren } 1900a9730eSGuo Ren 2000a9730eSGuo Ren void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, 2100a9730eSGuo Ren unsigned long vaddr, int len) 2200a9730eSGuo Ren { 2300a9730eSGuo Ren unsigned long kaddr; 2400a9730eSGuo Ren 2500a9730eSGuo Ren kaddr = (unsigned long) kmap_atomic(page) + (vaddr & ~PAGE_MASK); 2600a9730eSGuo Ren 2700a9730eSGuo Ren cache_wbinv_range(kaddr, kaddr + len); 2800a9730eSGuo Ren 2900a9730eSGuo Ren kunmap_atomic((void *)kaddr); 3000a9730eSGuo Ren } 3100a9730eSGuo Ren 3200a9730eSGuo Ren void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, 3300a9730eSGuo Ren pte_t *pte) 3400a9730eSGuo Ren { 3500a9730eSGuo Ren unsigned long addr, pfn; 3600a9730eSGuo Ren struct page *page; 3700a9730eSGuo Ren void *va; 3800a9730eSGuo Ren 3900a9730eSGuo Ren if (!(vma->vm_flags & VM_EXEC)) 4000a9730eSGuo Ren return; 4100a9730eSGuo Ren 4200a9730eSGuo Ren pfn = pte_pfn(*pte); 4300a9730eSGuo Ren if (unlikely(!pfn_valid(pfn))) 4400a9730eSGuo Ren return; 4500a9730eSGuo Ren 4600a9730eSGuo Ren page = pfn_to_page(pfn); 4700a9730eSGuo Ren if (page == ZERO_PAGE(0)) 4800a9730eSGuo Ren return; 4900a9730eSGuo Ren 5000a9730eSGuo Ren va = page_address(page); 5100a9730eSGuo Ren addr = (unsigned long) va; 5200a9730eSGuo Ren 5300a9730eSGuo Ren if (va == NULL && PageHighMem(page)) 5400a9730eSGuo Ren addr = (unsigned long) kmap_atomic(page); 5500a9730eSGuo Ren 5600a9730eSGuo Ren cache_wbinv_range(addr, addr + PAGE_SIZE); 5700a9730eSGuo Ren 5800a9730eSGuo Ren if (va == NULL && PageHighMem(page)) 5900a9730eSGuo Ren kunmap_atomic((void *) addr); 6000a9730eSGuo Ren } 61