/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _M68K_CACHEFLUSH_H #define _M68K_CACHEFLUSH_H #include <linux/mm.h> #ifdef CONFIG_COLDFIRE #include <asm/mcfsim.h> #endif /* cache code */ #define FLUSH_I_AND_D (0x00000808) #define FLUSH_I (0x00000008) #ifndef ICACHE_MAX_ADDR #define ICACHE_MAX_ADDR 0 #define ICACHE_SET_MASK 0 #define DCACHE_MAX_ADDR 0 #define DCACHE_SETMASK 0 #endif #ifndef CACHE_MODE #define CACHE_MODE 0 #define CACR_ICINVA 0 #define CACR_DCINVA 0 #define CACR_BCINVA 0 #endif /* * ColdFire architecture has no way to clear individual cache lines, so we * are stuck invalidating all the cache entries when we want a clear operation. */ static inline void clear_cf_icache(unsigned long start, unsigned long end) { __asm__ __volatile__ ( "movec %0,%%cacr\n\t" "nop" : : "r" (CACHE_MODE | CACR_ICINVA | CACR_BCINVA)); } static inline void clear_cf_dcache(unsigned long start, unsigned long end) { __asm__ __volatile__ ( "movec %0,%%cacr\n\t" "nop" : : "r" (CACHE_MODE | CACR_DCINVA)); } static inline void clear_cf_bcache(unsigned long start, unsigned long end) { __asm__ __volatile__ ( "movec %0,%%cacr\n\t" "nop" : : "r" (CACHE_MODE | CACR_ICINVA | CACR_BCINVA | CACR_DCINVA)); } /* * Use the ColdFire cpushl instruction to push (and invalidate) cache lines. * The start and end addresses are cache line numbers not memory addresses. */ static inline void flush_cf_icache(unsigned long start, unsigned long end) { unsigned long set; for (set = start; set <= end; set += (0x10 - 3)) { __asm__ __volatile__ ( "cpushl %%ic,(%0)\n\t" "addq%.l #1,%0\n\t" "cpushl %%ic,(%0)\n\t" "addq%.l #1,%0\n\t" "cpushl %%ic,(%0)\n\t" "addq%.l #1,%0\n\t" "cpushl %%ic,(%0)" : "=a" (set) : "a" (set)); } } static inline void flush_cf_dcache(unsigned long start, unsigned long end) { unsigned long set; for (set = start; set <= end; set += (0x10 - 3)) { __asm__ __volatile__ ( "cpushl %%dc,(%0)\n\t" "addq%.l #1,%0\n\t" "cpushl %%dc,(%0)\n\t" "addq%.l #1,%0\n\t" "cpushl %%dc,(%0)\n\t" "addq%.l #1,%0\n\t" "cpushl %%dc,(%0)" : "=a" (set) : "a" (set)); } } static inline void flush_cf_bcache(unsigned long start, unsigned long end) { unsigned long set; for (set = start; set <= end; set += (0x10 - 3)) { __asm__ __volatile__ ( "cpushl %%bc,(%0)\n\t" "addq%.l #1,%0\n\t" "cpushl %%bc,(%0)\n\t" "addq%.l #1,%0\n\t" "cpushl %%bc,(%0)\n\t" "addq%.l #1,%0\n\t" "cpushl %%bc,(%0)" : "=a" (set) : "a" (set)); } } /* * Cache handling functions */ static inline void flush_icache(void) { if (CPU_IS_COLDFIRE) { flush_cf_icache(0, ICACHE_MAX_ADDR); } else if (CPU_IS_040_OR_060) { asm volatile ( "nop\n" " .chip 68040\n" " cpusha %bc\n" " .chip 68k"); } else { unsigned long tmp; asm volatile ( "movec %%cacr,%0\n" " or.w %1,%0\n" " movec %0,%%cacr" : "=&d" (tmp) : "id" (FLUSH_I)); } } /* * invalidate the cache for the specified memory range. * It starts at the physical address specified for * the given number of bytes. */ extern void cache_clear(unsigned long paddr, int len); /* * push any dirty cache in the specified memory range. * It starts at the physical address specified for * the given number of bytes. */ extern void cache_push(unsigned long paddr, int len); /* * push and invalidate pages in the specified user virtual * memory range. */ extern void cache_push_v(unsigned long vaddr, int len); /* This is needed whenever the virtual mapping of the current process changes. */ #define __flush_cache_all() \ ({ \ if (CPU_IS_COLDFIRE) { \ flush_cf_dcache(0, DCACHE_MAX_ADDR); \ } else if (CPU_IS_040_OR_060) { \ __asm__ __volatile__("nop\n\t" \ ".chip 68040\n\t" \ "cpusha %dc\n\t" \ ".chip 68k"); \ } else { \ unsigned long _tmp; \ __asm__ __volatile__("movec %%cacr,%0\n\t" \ "orw %1,%0\n\t" \ "movec %0,%%cacr" \ : "=&d" (_tmp) \ : "di" (FLUSH_I_AND_D)); \ } \ }) #define __flush_cache_030() \ ({ \ if (CPU_IS_020_OR_030) { \ unsigned long _tmp; \ __asm__ __volatile__("movec %%cacr,%0\n\t" \ "orw %1,%0\n\t" \ "movec %0,%%cacr" \ : "=&d" (_tmp) \ : "di" (FLUSH_I_AND_D)); \ } \ }) #define flush_cache_all() __flush_cache_all() #define flush_cache_vmap(start, end) flush_cache_all() #define flush_cache_vunmap(start, end) flush_cache_all() static inline void flush_cache_mm(struct mm_struct *mm) { if (mm == current->mm) __flush_cache_030(); } #define flush_cache_dup_mm(mm) flush_cache_mm(mm) /* flush_cache_range/flush_cache_page must be macros to avoid a dependency on linux/mm.h, which includes this file... */ static inline void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) { if (vma->vm_mm == current->mm) __flush_cache_030(); } static inline void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn) { if (vma->vm_mm == current->mm) __flush_cache_030(); } /* Push the page at kernel virtual address and clear the icache */ /* RZ: use cpush %bc instead of cpush %dc, cinv %ic */ static inline void __flush_page_to_ram(void *vaddr) { if (CPU_IS_COLDFIRE) { unsigned long addr, start, end; addr = ((unsigned long) vaddr) & ~(PAGE_SIZE - 1); start = addr & ICACHE_SET_MASK; end = (addr + PAGE_SIZE - 1) & ICACHE_SET_MASK; if (start > end) { flush_cf_bcache(0, end); end = ICACHE_MAX_ADDR; } flush_cf_bcache(start, end); } else if (CPU_IS_040_OR_060) { __asm__ __volatile__("nop\n\t" ".chip 68040\n\t" "cpushp %%bc,(%0)\n\t" ".chip 68k" : : "a" (__pa(vaddr))); } else { unsigned long _tmp; __asm__ __volatile__("movec %%cacr,%0\n\t" "orw %1,%0\n\t" "movec %0,%%cacr" : "=&d" (_tmp) : "di" (FLUSH_I)); } } #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 #define flush_dcache_page(page) __flush_page_to_ram(page_address(page)) #define flush_dcache_mmap_lock(mapping) do { } while (0) #define flush_dcache_mmap_unlock(mapping) do { } while (0) #define flush_icache_page(vma, page) __flush_page_to_ram(page_address(page)) extern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, unsigned long addr, int len); extern void flush_icache_range(unsigned long address, unsigned long endaddr); static inline void copy_to_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, void *src, int len) { flush_cache_page(vma, vaddr, page_to_pfn(page)); memcpy(dst, src, len); flush_icache_user_range(vma, page, vaddr, len); } static inline void copy_from_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, void *src, int len) { flush_cache_page(vma, vaddr, page_to_pfn(page)); memcpy(dst, src, len); } #endif /* _M68K_CACHEFLUSH_H */
Name | Type | Size | Permission | Actions |
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Kbuild | File | 599 B | 0644 |
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MC68328.h | File | 37.82 KB | 0644 |
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MC68EZ328.h | File | 37.74 KB | 0644 |
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MC68VZ328.h | File | 41.02 KB | 0644 |
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a.out-core.h | File | 1.98 KB | 0644 |
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adb_iop.h | File | 1.09 KB | 0644 |
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amigaints.h | File | 3.5 KB | 0644 |
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amigayle.h | File | 3.19 KB | 0644 |
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amipcmcia.h | File | 2.51 KB | 0644 |
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apollohw.h | File | 2.35 KB | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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asm-prototypes.h | File | 211 B | 0644 |
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atafd.h | File | 300 B | 0644 |
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atafdreg.h | File | 2.68 KB | 0644 |
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atari_joystick.h | File | 457 B | 0644 |
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atari_stdma.h | File | 514 B | 0644 |
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atari_stram.h | File | 528 B | 0644 |
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atarihw.h | File | 20.3 KB | 0644 |
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atariints.h | File | 5.56 KB | 0644 |
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atarikb.h | File | 1.4 KB | 0644 |
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atomic.h | File | 4.86 KB | 0644 |
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bitops.h | File | 12.19 KB | 0644 |
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blinken.h | File | 641 B | 0644 |
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bootinfo.h | File | 783 B | 0644 |
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bootstd.h | File | 4.64 KB | 0644 |
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bug.h | File | 659 B | 0644 |
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bugs.h | File | 369 B | 0644 |
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bvme6000hw.h | File | 3.45 KB | 0644 |
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cache.h | File | 296 B | 0644 |
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cacheflush.h | File | 133 B | 0644 |
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cacheflush_mm.h | File | 6.92 KB | 0644 |
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cacheflush_no.h | File | 2.61 KB | 0644 |
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checksum.h | File | 3.4 KB | 0644 |
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cmpxchg.h | File | 3.34 KB | 0644 |
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coldfire.h | File | 1.61 KB | 0644 |
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contregs.h | File | 3.31 KB | 0644 |
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current.h | File | 580 B | 0644 |
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delay.h | File | 3.43 KB | 0644 |
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div64.h | File | 858 B | 0644 |
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dma-mapping.h | File | 291 B | 0644 |
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dma.h | File | 16.65 KB | 0644 |
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dsp56k.h | File | 1.24 KB | 0644 |
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dvma.h | File | 9.67 KB | 0644 |
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elf.h | File | 3.07 KB | 0644 |
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entry.h | File | 5.76 KB | 0644 |
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export.h | File | 74 B | 0644 |
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fb.h | File | 921 B | 0644 |
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fbio.h | File | 9.87 KB | 0644 |
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flat.h | File | 1.02 KB | 0644 |
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floppy.h | File | 5.06 KB | 0644 |
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fpu.h | File | 535 B | 0644 |
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ftrace.h | File | 12 B | 0644 |
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gpio.h | File | 2.64 KB | 0644 |
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hardirq.h | File | 594 B | 0644 |
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hash.h | File | 2.07 KB | 0644 |
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hp300hw.h | File | 186 B | 0644 |
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hwtest.h | File | 467 B | 0644 |
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ide.h | File | 1.67 KB | 0644 |
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idprom.h | File | 725 B | 0644 |
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intersil.h | File | 1.11 KB | 0644 |
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io.h | File | 383 B | 0644 |
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io_mm.h | File | 16.19 KB | 0644 |
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io_no.h | File | 5.26 KB | 0644 |
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irq.h | File | 2.57 KB | 0644 |
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irqflags.h | File | 1.61 KB | 0644 |
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kexec.h | File | 732 B | 0644 |
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linkage.h | File | 1.55 KB | 0644 |
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m5206sim.h | File | 6.4 KB | 0644 |
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m520xsim.h | File | 7.15 KB | 0644 |
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m523xsim.h | File | 7.7 KB | 0644 |
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m525xsim.h | File | 10.57 KB | 0644 |
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m5272sim.h | File | 6.05 KB | 0644 |
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m527xsim.h | File | 13.51 KB | 0644 |
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m528xsim.h | File | 9.37 KB | 0644 |
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m52xxacr.h | File | 3.57 KB | 0644 |
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m5307sim.h | File | 7.52 KB | 0644 |
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m53xxacr.h | File | 3.6 KB | 0644 |
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m53xxsim.h | File | 53.97 KB | 0644 |
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m5407sim.h | File | 6.14 KB | 0644 |
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m5441xsim.h | File | 8.5 KB | 0644 |
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m54xxacr.h | File | 4.82 KB | 0644 |
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m54xxgpt.h | File | 3.66 KB | 0644 |
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m54xxpci.h | File | 6.13 KB | 0644 |
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m54xxsim.h | File | 3.8 KB | 0644 |
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mac_asc.h | File | 520 B | 0644 |
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mac_baboon.h | File | 999 B | 0644 |
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mac_iop.h | File | 5.37 KB | 0644 |
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mac_oss.h | File | 1.83 KB | 0644 |
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mac_psc.h | File | 7.25 KB | 0644 |
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mac_via.h | File | 11.44 KB | 0644 |
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machdep.h | File | 1.34 KB | 0644 |
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machines.h | File | 3.13 KB | 0644 |
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machw.h | File | 588 B | 0644 |
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macintosh.h | File | 2.02 KB | 0644 |
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macints.h | File | 3.28 KB | 0644 |
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math-emu.h | File | 6.74 KB | 0644 |
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mc146818rtc.h | File | 598 B | 0644 |
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mcf8390.h | File | 3.75 KB | 0644 |
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mcf_pgalloc.h | File | 2.37 KB | 0644 |
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mcf_pgtable.h | File | 9.89 KB | 0644 |
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mcfclk.h | File | 1.01 KB | 0644 |
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mcfdma.h | File | 6.51 KB | 0644 |
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mcfgpio.h | File | 8.48 KB | 0644 |
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mcfintc.h | File | 3.09 KB | 0644 |
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mcfmmu.h | File | 3.67 KB | 0644 |
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mcfpit.h | File | 2.22 KB | 0644 |
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mcfqspi.h | File | 1.82 KB | 0644 |
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mcfsim.h | File | 1.5 KB | 0644 |
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mcfslt.h | File | 1.21 KB | 0644 |
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mcftimer.h | File | 2.3 KB | 0644 |
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mcfuart.h | File | 6.91 KB | 0644 |
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mcfwdebug.h | File | 4.99 KB | 0644 |
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mmu.h | File | 243 B | 0644 |
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mmu_context.h | File | 7.2 KB | 0644 |
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mmzone.h | File | 264 B | 0644 |
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module.h | File | 847 B | 0644 |
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motorola_pgalloc.h | File | 2.26 KB | 0644 |
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motorola_pgtable.h | File | 9.2 KB | 0644 |
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movs.h | File | 1.44 KB | 0644 |
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mvme147hw.h | File | 2.81 KB | 0644 |
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mvme16xhw.h | File | 2.16 KB | 0644 |
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natfeat.h | File | 533 B | 0644 |
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nettel.h | File | 2.95 KB | 0644 |
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nubus.h | File | 1.21 KB | 0644 |
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openprom.h | File | 7.98 KB | 0644 |
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oplib.h | File | 9.54 KB | 0644 |
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page.h | File | 1.47 KB | 0644 |
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page_mm.h | File | 4.06 KB | 0644 |
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page_no.h | File | 1.28 KB | 0644 |
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page_offset.h | File | 256 B | 0644 |
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parport.h | File | 837 B | 0644 |
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pci.h | File | 458 B | 0644 |
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pgalloc.h | File | 444 B | 0644 |
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pgtable.h | File | 127 B | 0644 |
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pgtable_mm.h | File | 4.84 KB | 0644 |
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pgtable_no.h | File | 1.57 KB | 0644 |
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processor.h | File | 3.59 KB | 0644 |
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ptrace.h | File | 643 B | 0644 |
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q40_master.h | File | 2.28 KB | 0644 |
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q40ints.h | File | 749 B | 0644 |
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quicc_simple.h | File | 1.79 KB | 0644 |
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raw_io.h | File | 11.41 KB | 0644 |
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segment.h | File | 1.42 KB | 0644 |
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serial.h | File | 1.14 KB | 0644 |
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setup.h | File | 9.25 KB | 0644 |
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signal.h | File | 1.34 KB | 0644 |
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smp.h | File | 32 B | 0644 |
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string.h | File | 1.68 KB | 0644 |
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sun3-head.h | File | 353 B | 0644 |
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sun3_pgalloc.h | File | 2.26 KB | 0644 |
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sun3_pgtable.h | File | 7.65 KB | 0644 |
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sun3ints.h | File | 989 B | 0644 |
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sun3mmu.h | File | 4.91 KB | 0644 |
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sun3x.h | File | 868 B | 0644 |
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sun3xflop.h | File | 5.62 KB | 0644 |
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sun3xprom.h | File | 1.31 KB | 0644 |
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switch_to.h | File | 1.51 KB | 0644 |
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thread_info.h | File | 2.02 KB | 0644 |
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timex.h | File | 974 B | 0644 |
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tlb.h | File | 486 B | 0644 |
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tlbflush.h | File | 5.95 KB | 0644 |
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traps.h | File | 8.33 KB | 0644 |
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uaccess.h | File | 152 B | 0644 |
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uaccess_mm.h | File | 10.31 KB | 0644 |
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uaccess_no.h | File | 3.69 KB | 0644 |
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ucontext.h | File | 570 B | 0644 |
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unaligned.h | File | 600 B | 0644 |
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unistd.h | File | 952 B | 0644 |
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user.h | File | 3.78 KB | 0644 |
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vga.h | File | 651 B | 0644 |
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virtconvert.h | File | 947 B | 0644 |
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zorro.h | File | 1.17 KB | 0644 |
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