^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Cache management functions for Hexagon
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <asm/cacheflush.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/hexagon_vm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define spanlines(start, end) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) (((end - (start & ~(LINESIZE - 1))) >> LINEBITS) + 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) void flush_dcache_range(unsigned long start, unsigned long end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) unsigned long lines = spanlines(start, end-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) unsigned long i, flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) start &= ~(LINESIZE - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) for (i = 0; i < lines; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) __asm__ __volatile__ (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) " dccleaninva(%0); "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) : "r" (start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) start += LINESIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) void flush_icache_range(unsigned long start, unsigned long end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) unsigned long lines = spanlines(start, end-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) unsigned long i, flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) start &= ~(LINESIZE - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) for (i = 0; i < lines; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) __asm__ __volatile__ (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) " dccleana(%0); "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) " icinva(%0); "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) : "r" (start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) start += LINESIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) __asm__ __volatile__ (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) "isync"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) EXPORT_SYMBOL(flush_icache_range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) void hexagon_clean_dcache_range(unsigned long start, unsigned long end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) unsigned long lines = spanlines(start, end-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) unsigned long i, flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) start &= ~(LINESIZE - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) for (i = 0; i < lines; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) __asm__ __volatile__ (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) " dccleana(%0); "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) : "r" (start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) start += LINESIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) void hexagon_inv_dcache_range(unsigned long start, unsigned long end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) unsigned long lines = spanlines(start, end-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) unsigned long i, flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) start &= ~(LINESIZE - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) for (i = 0; i < lines; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) __asm__ __volatile__ (
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) " dcinva(%0); "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) : "r" (start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) start += LINESIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * This is just really brutal and shouldn't be used anyways,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * especially on V2. Left here just in case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) void flush_cache_all_hexagon(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) __vmcache_ickill();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) __vmcache_dckill();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) __vmcache_l2kill();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) mb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) unsigned long vaddr, void *dst, void *src, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) memcpy(dst, src, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (vma->vm_flags & VM_EXEC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) flush_icache_range((unsigned long) dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) (unsigned long) dst + len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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