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arm64: Rename arm64-internal cache maintenance functions

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Although naming across the codebase isn't that consistent, it
tends to follow certain patterns. Moreover, the term "flush"
isn't defined in the Arm Architecture reference manual, and might
be interpreted to mean clean, invalidate, or both for a cache.

Rename arm64-internal functions to make the naming internally
consistent, as well as making it consistent with the Arm ARM, by
specifying whether it applies to the instruction, data, or both
caches, whether the operation is a clean, invalidate, or both.
Also specify which point the operation applies to, i.e., to the
point of unification (PoU), coherency (PoC), or persistence
(PoP).

This commit applies the following sed transformation to all files
under arch/arm64:

"s/\b__flush_cache_range\b/caches_clean_inval_pou_macro/g;"\
"s/\b__flush_icache_range\b/caches_clean_inval_pou/g;"\
"s/\binvalidate_icache_range\b/icache_inval_pou/g;"\
"s/\b__flush_dcache_area\b/dcache_clean_inval_poc/g;"\
"s/\b__inval_dcache_area\b/dcache_inval_poc/g;"\
"s/__clean_dcache_area_poc\b/dcache_clean_poc/g;"\
"s/\b__clean_dcache_area_pop\b/dcache_clean_pop/g;"\
"s/\b__clean_dcache_area_pou\b/dcache_clean_pou/g;"\
"s/\b__flush_cache_user_range\b/caches_clean_inval_user_pou/g;"\
"s/\b__flush_icache_all\b/icache_inval_all_pou/g;"

Note that __clean_dcache_area_poc is deliberately missing a word
boundary check at the beginning in order to match the efistub
symbols in image-vars.h.

Also note that, despite its name, __flush_icache_range operates
on both instruction and data caches. The name change here
reflects that.

No functional change intended.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20210524083001.2586635-19-tabba@google.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Fuad Tabba 2021-05-24 09:30:01 +01:00 committed by Will Deacon
parent 393239be1b
commit fade9c2c6e
25 changed files with 98 additions and 98 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/arm64/include/asm/arch_gicv3.h
View file

@ -125,7 +125,7 @@ static inline u32 gic_read_rpr(void)
#define gic_write_lpir(v, c) writeq_relaxed(v, c)
#define gic_flush_dcache_to_poc(a,l) \
__flush_dcache_area((unsigned long)(a), (unsigned long)(a)+(l))
dcache_clean_inval_poc((unsigned long)(a), (unsigned long)(a)+(l))
#define gits_read_baser(c) readq_relaxed(c)
#define gits_write_baser(v, c) writeq_relaxed(v, c)

36
arch/arm64/include/asm/cacheflush.h
View file

@ -34,54 +34,54 @@
* - start - virtual start address (inclusive)
* - end - virtual end address (exclusive)
*
* __flush_icache_range(start, end)
* caches_clean_inval_pou(start, end)
*
* Ensure coherency between the I-cache and the D-cache region to
* the Point of Unification.
*
* __flush_cache_user_range(start, end)
* caches_clean_inval_user_pou(start, end)
*
* Ensure coherency between the I-cache and the D-cache region to
* the Point of Unification.
* Use only if the region might access user memory.
*
* invalidate_icache_range(start, end)
* icache_inval_pou(start, end)
*
* Invalidate I-cache region to the Point of Unification.
*
* __flush_dcache_area(start, end)
* dcache_clean_inval_poc(start, end)
*
* Clean and invalidate D-cache region to the Point of Coherency.
*
* __inval_dcache_area(start, end)
* dcache_inval_poc(start, end)
*
* Invalidate D-cache region to the Point of Coherency.
*
* __clean_dcache_area_poc(start, end)
* dcache_clean_poc(start, end)
*
* Clean D-cache region to the Point of Coherency.
*
* __clean_dcache_area_pop(start, end)
* dcache_clean_pop(start, end)
*
* Clean D-cache region to the Point of Persistence.
*
* __clean_dcache_area_pou(start, end)
* dcache_clean_pou(start, end)
*
* Clean D-cache region to the Point of Unification.
*/
extern void __flush_icache_range(unsigned long start, unsigned long end);
extern void invalidate_icache_range(unsigned long start, unsigned long end);
extern void __flush_dcache_area(unsigned long start, unsigned long end);
extern void __inval_dcache_area(unsigned long start, unsigned long end);
extern void __clean_dcache_area_poc(unsigned long start, unsigned long end);
extern void __clean_dcache_area_pop(unsigned long start, unsigned long end);
extern void __clean_dcache_area_pou(unsigned long start, unsigned long end);
extern long __flush_cache_user_range(unsigned long start, unsigned long end);
extern void caches_clean_inval_pou(unsigned long start, unsigned long end);
extern void icache_inval_pou(unsigned long start, unsigned long end);
extern void dcache_clean_inval_poc(unsigned long start, unsigned long end);
extern void dcache_inval_poc(unsigned long start, unsigned long end);
extern void dcache_clean_poc(unsigned long start, unsigned long end);
extern void dcache_clean_pop(unsigned long start, unsigned long end);
extern void dcache_clean_pou(unsigned long start, unsigned long end);
extern long caches_clean_inval_user_pou(unsigned long start, unsigned long end);
extern void sync_icache_aliases(unsigned long start, unsigned long end);
static inline void flush_icache_range(unsigned long start, unsigned long end)
{
__flush_icache_range(start, end);
caches_clean_inval_pou(start, end);
/*
* IPI all online CPUs so that they undergo a context synchronization
@ -135,7 +135,7 @@ extern void copy_to_user_page(struct vm_area_struct *, struct page *,
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
extern void flush_dcache_page(struct page *);
static __always_inline void __flush_icache_all(void)
static __always_inline void icache_inval_all_pou(void)
{
if (cpus_have_const_cap(ARM64_HAS_CACHE_DIC))
return;

2
arch/arm64/include/asm/efi.h
View file

@ -137,7 +137,7 @@ void efi_virtmap_unload(void);
static inline void efi_capsule_flush_cache_range(void *addr, int size)
{
__flush_dcache_area((unsigned long)addr, (unsigned long)addr + size);
dcache_clean_inval_poc((unsigned long)addr, (unsigned long)addr + size);
}
#endif /* _ASM_EFI_H */

6
arch/arm64/include/asm/kvm_mmu.h
View file

@ -181,7 +181,7 @@ static inline void *__kvm_vector_slot2addr(void *base,
struct kvm;
#define kvm_flush_dcache_to_poc(a,l) \
__flush_dcache_area((unsigned long)(a), (unsigned long)(a)+(l))
dcache_clean_inval_poc((unsigned long)(a), (unsigned long)(a)+(l))
static inline bool vcpu_has_cache_enabled(struct kvm_vcpu *vcpu)
{
@ -209,12 +209,12 @@ static inline void __invalidate_icache_guest_page(kvm_pfn_t pfn,
{
if (icache_is_aliasing()) {
/* any kind of VIPT cache */
__flush_icache_all();
icache_inval_all_pou();
} else if (is_kernel_in_hyp_mode() || !icache_is_vpipt()) {
/* PIPT or VPIPT at EL2 (see comment in __kvm_tlb_flush_vmid_ipa) */
void *va = page_address(pfn_to_page(pfn));
invalidate_icache_range((unsigned long)va,
icache_inval_pou((unsigned long)va,
(unsigned long)va + size);
}
}

2
arch/arm64/kernel/alternative.c
View file

@ -181,7 +181,7 @@ static void __nocfi __apply_alternatives(struct alt_region *region, bool is_modu
*/
if (!is_module) {
dsb(ish);
__flush_icache_all();
icache_inval_all_pou();
isb();
/* Ignore ARM64_CB bit from feature mask */

4
arch/arm64/kernel/efi-entry.S
View file

@ -29,7 +29,7 @@ SYM_CODE_START(efi_enter_kernel)
*/
ldr w1, =kernel_size
add x1, x0, x1
bl __clean_dcache_area_poc
bl dcache_clean_poc
ic ialluis
/*
@ -38,7 +38,7 @@ SYM_CODE_START(efi_enter_kernel)
*/
adr x0, 0f
adr x1, 3f
bl __clean_dcache_area_poc
bl dcache_clean_poc
0:
/* Turn off Dcache and MMU */
mrs x0, CurrentEL

8
arch/arm64/kernel/head.S
View file

@ -118,7 +118,7 @@ SYM_CODE_START_LOCAL(preserve_boot_args)
// MMU off
add x1, x0, #0x20 // 4 x 8 bytes
b __inval_dcache_area // tail call
b dcache_inval_poc // tail call
SYM_CODE_END(preserve_boot_args)
/*
@ -268,7 +268,7 @@ SYM_FUNC_START_LOCAL(__create_page_tables)
*/
adrp x0, init_pg_dir
adrp x1, init_pg_end
bl __inval_dcache_area
bl dcache_inval_poc
/*
* Clear the init page tables.
@ -381,11 +381,11 @@ SYM_FUNC_START_LOCAL(__create_page_tables)
adrp x0, idmap_pg_dir
adrp x1, idmap_pg_end
bl __inval_dcache_area
bl dcache_inval_poc
adrp x0, init_pg_dir
adrp x1, init_pg_end
bl __inval_dcache_area
bl dcache_inval_poc
ret x28
SYM_FUNC_END(__create_page_tables)

4
arch/arm64/kernel/hibernate-asm.S
View file

@ -45,7 +45,7 @@
* Because this code has to be copied to a 'safe' page, it can't call out to
* other functions by PC-relative address. Also remember that it may be
* mid-way through over-writing other functions. For this reason it contains
* code from __flush_icache_range() and uses the copy_page() macro.
* code from caches_clean_inval_pou() and uses the copy_page() macro.
*
* This 'safe' page is mapped via ttbr0, and executed from there. This function
* switches to a copy of the linear map in ttbr1, performs the restore, then
@ -87,7 +87,7 @@ SYM_CODE_START(swsusp_arch_suspend_exit)
copy_page x0, x1, x2, x3, x4, x5, x6, x7, x8, x9
add x1, x10, #PAGE_SIZE
/* Clean the copied page to PoU - based on __flush_icache_range() */
/* Clean the copied page to PoU - based on caches_clean_inval_pou() */
raw_dcache_line_size x2, x3
sub x3, x2, #1
bic x4, x10, x3

12
arch/arm64/kernel/hibernate.c
View file

@ -210,7 +210,7 @@ static int create_safe_exec_page(void *src_start, size_t length,
return -ENOMEM;
memcpy(page, src_start, length);
__flush_icache_range((unsigned long)page, (unsigned long)page + length);
caches_clean_inval_pou((unsigned long)page, (unsigned long)page + length);
rc = trans_pgd_idmap_page(&trans_info, &trans_ttbr0, &t0sz, page);
if (rc)
return rc;
@ -381,17 +381,17 @@ int swsusp_arch_suspend(void)
ret = swsusp_save();
} else {
/* Clean kernel core startup/idle code to PoC*/
__flush_dcache_area((unsigned long)__mmuoff_data_start,
dcache_clean_inval_poc((unsigned long)__mmuoff_data_start,
(unsigned long)__mmuoff_data_end);
__flush_dcache_area((unsigned long)__idmap_text_start,
dcache_clean_inval_poc((unsigned long)__idmap_text_start,
(unsigned long)__idmap_text_end);
/* Clean kvm setup code to PoC? */
if (el2_reset_needed()) {
__flush_dcache_area(
dcache_clean_inval_poc(
(unsigned long)__hyp_idmap_text_start,
(unsigned long)__hyp_idmap_text_end);
__flush_dcache_area((unsigned long)__hyp_text_start,
dcache_clean_inval_poc((unsigned long)__hyp_text_start,
(unsigned long)__hyp_text_end);
}
@ -477,7 +477,7 @@ int swsusp_arch_resume(void)
* The hibernate exit text contains a set of el2 vectors, that will
* be executed at el2 with the mmu off in order to reload hyp-stub.
*/
__flush_dcache_area((unsigned long)hibernate_exit,
dcache_clean_inval_poc((unsigned long)hibernate_exit,
(unsigned long)hibernate_exit + exit_size);
/*

2
arch/arm64/kernel/idreg-override.c
View file

@ -237,7 +237,7 @@ asmlinkage void __init init_feature_override(void)
for (i = 0; i < ARRAY_SIZE(regs); i++) {
if (regs[i]->override)
__flush_dcache_area((unsigned long)regs[i]->override,
dcache_clean_inval_poc((unsigned long)regs[i]->override,
(unsigned long)regs[i]->override +
sizeof(*regs[i]->override));
}

2
arch/arm64/kernel/image-vars.h
View file

@ -35,7 +35,7 @@ __efistub_strnlen = __pi_strnlen;
__efistub_strcmp = __pi_strcmp;
__efistub_strncmp = __pi_strncmp;
__efistub_strrchr = __pi_strrchr;
__efistub___clean_dcache_area_poc = __pi___clean_dcache_area_poc;
__efistub_dcache_clean_poc = __pi_dcache_clean_poc;
#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
__efistub___memcpy = __pi_memcpy;

2
arch/arm64/kernel/insn.c
View file

@ -198,7 +198,7 @@ int __kprobes aarch64_insn_patch_text_nosync(void *addr, u32 insn)
ret = aarch64_insn_write(tp, insn);
if (ret == 0)
__flush_icache_range((uintptr_t)tp,
caches_clean_inval_pou((uintptr_t)tp,
(uintptr_t)tp + AARCH64_INSN_SIZE);
return ret;

6
arch/arm64/kernel/kaslr.c
View file

@ -72,7 +72,7 @@ u64 __init kaslr_early_init(void)
* we end up running with module randomization disabled.
*/
module_alloc_base = (u64)_etext - MODULES_VSIZE;
__flush_dcache_area((unsigned long)&module_alloc_base,
dcache_clean_inval_poc((unsigned long)&module_alloc_base,
(unsigned long)&module_alloc_base +
sizeof(module_alloc_base));
@ -172,10 +172,10 @@ u64 __init kaslr_early_init(void)
module_alloc_base += (module_range * (seed & ((1 << 21) - 1))) >> 21;
module_alloc_base &= PAGE_MASK;
__flush_dcache_area((unsigned long)&module_alloc_base,
dcache_clean_inval_poc((unsigned long)&module_alloc_base,
(unsigned long)&module_alloc_base +
sizeof(module_alloc_base));
__flush_dcache_area((unsigned long)&memstart_offset_seed,
dcache_clean_inval_poc((unsigned long)&memstart_offset_seed,
(unsigned long)&memstart_offset_seed +
sizeof(memstart_offset_seed));

10
arch/arm64/kernel/machine_kexec.c
View file

@ -72,10 +72,10 @@ int machine_kexec_post_load(struct kimage *kimage)
* For execution with the MMU off, reloc_code needs to be cleaned to the
* PoC and invalidated from the I-cache.
*/
__flush_dcache_area((unsigned long)reloc_code,
dcache_clean_inval_poc((unsigned long)reloc_code,
(unsigned long)reloc_code +
arm64_relocate_new_kernel_size);
invalidate_icache_range((uintptr_t)reloc_code,
icache_inval_pou((uintptr_t)reloc_code,
(uintptr_t)reloc_code +
arm64_relocate_new_kernel_size);
@ -111,7 +111,7 @@ static void kexec_list_flush(struct kimage *kimage)
unsigned long addr;
/* flush the list entries. */
__flush_dcache_area((unsigned long)entry,
dcache_clean_inval_poc((unsigned long)entry,
(unsigned long)entry +
sizeof(kimage_entry_t));
@ -128,7 +128,7 @@ static void kexec_list_flush(struct kimage *kimage)
break;
case IND_SOURCE:
/* flush the source pages. */
__flush_dcache_area(addr, addr + PAGE_SIZE);
dcache_clean_inval_poc(addr, addr + PAGE_SIZE);
break;
case IND_DESTINATION:
break;
@ -155,7 +155,7 @@ static void kexec_segment_flush(const struct kimage *kimage)
kimage->segment[i].memsz,
kimage->segment[i].memsz / PAGE_SIZE);
__flush_dcache_area(
dcache_clean_inval_poc(
(unsigned long)phys_to_virt(kimage->segment[i].mem),
(unsigned long)phys_to_virt(kimage->segment[i].mem) +
kimage->segment[i].memsz);

4
arch/arm64/kernel/smp.c
View file

@ -122,7 +122,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle)
secondary_data.task = idle;
secondary_data.stack = task_stack_page(idle) + THREAD_SIZE;
update_cpu_boot_status(CPU_MMU_OFF);
__flush_dcache_area((unsigned long)&secondary_data,
dcache_clean_inval_poc((unsigned long)&secondary_data,
(unsigned long)&secondary_data +
sizeof(secondary_data));
@ -145,7 +145,7 @@ int __cpu_up(unsigned int cpu, struct task_struct *idle)
pr_crit("CPU%u: failed to come online\n", cpu);
secondary_data.task = NULL;
secondary_data.stack = NULL;
__flush_dcache_area((unsigned long)&secondary_data,
dcache_clean_inval_poc((unsigned long)&secondary_data,
(unsigned long)&secondary_data +
sizeof(secondary_data));
status = READ_ONCE(secondary_data.status);

4
arch/arm64/kernel/smp_spin_table.c
View file

@ -36,7 +36,7 @@ static void write_pen_release(u64 val)
unsigned long size = sizeof(secondary_holding_pen_release);
secondary_holding_pen_release = val;
__flush_dcache_area((unsigned long)start, (unsigned long)start + size);
dcache_clean_inval_poc((unsigned long)start, (unsigned long)start + size);
}
@ -90,7 +90,7 @@ static int smp_spin_table_cpu_prepare(unsigned int cpu)
* the boot protocol.
*/
writeq_relaxed(pa_holding_pen, release_addr);
__flush_dcache_area((__force unsigned long)release_addr,
dcache_clean_inval_poc((__force unsigned long)release_addr,
(__force unsigned long)release_addr +
sizeof(*release_addr));

2
arch/arm64/kernel/sys_compat.c
View file

@ -41,7 +41,7 @@ __do_compat_cache_op(unsigned long start, unsigned long end)
dsb(ish);
}
ret = __flush_cache_user_range(start, start + chunk);
ret = caches_clean_inval_user_pou(start, start + chunk);
if (ret)
return ret;

2
arch/arm64/kvm/arm.c
View file

@ -1064,7 +1064,7 @@ static int kvm_arch_vcpu_ioctl_vcpu_init(struct kvm_vcpu *vcpu,
if (!cpus_have_final_cap(ARM64_HAS_STAGE2_FWB))
stage2_unmap_vm(vcpu->kvm);
else
__flush_icache_all();
icache_inval_all_pou();
}
vcpu_reset_hcr(vcpu);

4
arch/arm64/kvm/hyp/nvhe/cache.S
View file

@ -7,7 +7,7 @@
#include <asm/assembler.h>
#include <asm/alternative.h>
SYM_FUNC_START_PI(__flush_dcache_area)
SYM_FUNC_START_PI(dcache_clean_inval_poc)
dcache_by_line_op civac, sy, x0, x1, x2, x3
ret
SYM_FUNC_END_PI(__flush_dcache_area)
SYM_FUNC_END_PI(dcache_clean_inval_poc)

2
arch/arm64/kvm/hyp/nvhe/setup.c
View file

@ -134,7 +134,7 @@ static void update_nvhe_init_params(void)
for (i = 0; i < hyp_nr_cpus; i++) {
params = per_cpu_ptr(&kvm_init_params, i);
params->pgd_pa = __hyp_pa(pkvm_pgtable.pgd);
__flush_dcache_area((unsigned long)params,
dcache_clean_inval_poc((unsigned long)params,
(unsigned long)params + sizeof(*params));
}
}

2
arch/arm64/kvm/hyp/nvhe/tlb.c
View file

@ -104,7 +104,7 @@ void __kvm_tlb_flush_vmid_ipa(struct kvm_s2_mmu *mmu,
* you should be running with VHE enabled.
*/
if (icache_is_vpipt())
__flush_icache_all();
icache_inval_all_pou();
__tlb_switch_to_host(&cxt);
}

4
arch/arm64/kvm/hyp/pgtable.c
View file

@ -841,7 +841,7 @@ static int stage2_unmap_walker(u64 addr, u64 end, u32 level, kvm_pte_t *ptep,
if (need_flush) {
kvm_pte_t *pte_follow = kvm_pte_follow(pte, mm_ops);
__flush_dcache_area((unsigned long)pte_follow,
dcache_clean_inval_poc((unsigned long)pte_follow,
(unsigned long)pte_follow +
kvm_granule_size(level));
}
@ -997,7 +997,7 @@ static int stage2_flush_walker(u64 addr, u64 end, u32 level, kvm_pte_t *ptep,
return 0;
pte_follow = kvm_pte_follow(pte, mm_ops);
__flush_dcache_area((unsigned long)pte_follow,
dcache_clean_inval_poc((unsigned long)pte_follow,
(unsigned long)pte_follow +
kvm_granule_size(level));
return 0;

4
arch/arm64/lib/uaccess_flushcache.c
View file

@ -15,7 +15,7 @@ void memcpy_flushcache(void *dst, const void *src, size_t cnt)
* barrier to order the cache maintenance against the memcpy.
*/
memcpy(dst, src, cnt);
__clean_dcache_area_pop((unsigned long)dst, (unsigned long)dst + cnt);
dcache_clean_pop((unsigned long)dst, (unsigned long)dst + cnt);
}
EXPORT_SYMBOL_GPL(memcpy_flushcache);
@ -33,6 +33,6 @@ unsigned long __copy_user_flushcache(void *to, const void __user *from,
rc = raw_copy_from_user(to, from, n);
/* See above */
__clean_dcache_area_pop((unsigned long)to, (unsigned long)to + n - rc);
dcache_clean_pop((unsigned long)to, (unsigned long)to + n - rc);
return rc;
}

58
arch/arm64/mm/cache.S
View file

@ -15,7 +15,7 @@
#include <asm/asm-uaccess.h>
/*
* __flush_cache_range(start,end) [fixup]
* caches_clean_inval_pou_macro(start,end) [fixup]
*
* Ensure that the I and D caches are coherent within specified region.
* This is typically used when code has been written to a memory region,
@ -25,7 +25,7 @@
* - end - virtual end address of region
* - fixup - optional label to branch to on user fault
*/
.macro __flush_cache_range, fixup
.macro caches_clean_inval_pou_macro, fixup
alternative_if ARM64_HAS_CACHE_IDC
dsb ishst
b .Ldc_skip_\@
@ -43,7 +43,7 @@ alternative_else_nop_endif
.endm
/*
* __flush_icache_range(start,end)
* caches_clean_inval_pou(start,end)
*
* Ensure that the I and D caches are coherent within specified region.
* This is typically used when code has been written to a memory region,
@ -52,13 +52,13 @@ alternative_else_nop_endif
* - start - virtual start address of region
* - end - virtual end address of region
*/
SYM_FUNC_START(__flush_icache_range)
__flush_cache_range
SYM_FUNC_START(caches_clean_inval_pou)
caches_clean_inval_pou_macro
ret
SYM_FUNC_END(__flush_icache_range)
SYM_FUNC_END(caches_clean_inval_pou)
/*
* __flush_cache_user_range(start,end)
* caches_clean_inval_user_pou(start,end)
*
* Ensure that the I and D caches are coherent within specified region.
* This is typically used when code has been written to a memory region,
@ -67,10 +67,10 @@ SYM_FUNC_END(__flush_icache_range)
* - start - virtual start address of region
* - end - virtual end address of region
*/
SYM_FUNC_START(__flush_cache_user_range)
SYM_FUNC_START(caches_clean_inval_user_pou)
uaccess_ttbr0_enable x2, x3, x4
__flush_cache_range 2f
caches_clean_inval_pou_macro 2f
mov x0, xzr
1:
uaccess_ttbr0_disable x1, x2
@ -78,17 +78,17 @@ SYM_FUNC_START(__flush_cache_user_range)
2:
mov x0, #-EFAULT
b 1b
SYM_FUNC_END(__flush_cache_user_range)
SYM_FUNC_END(caches_clean_inval_user_pou)
/*
* invalidate_icache_range(start,end)
* icache_inval_pou(start,end)
*
* Ensure that the I cache is invalid within specified region.
*
* - start - virtual start address of region
* - end - virtual end address of region
*/
SYM_FUNC_START(invalidate_icache_range)
SYM_FUNC_START(icache_inval_pou)
alternative_if ARM64_HAS_CACHE_DIC
isb
ret
@ -96,10 +96,10 @@ alternative_else_nop_endif
invalidate_icache_by_line x0, x1, x2, x3
ret
SYM_FUNC_END(invalidate_icache_range)
SYM_FUNC_END(icache_inval_pou)
/*
* __flush_dcache_area(start, end)
* dcache_clean_inval_poc(start, end)
*
* Ensure that any D-cache lines for the interval [start, end)
* are cleaned and invalidated to the PoC.
@ -107,13 +107,13 @@ SYM_FUNC_END(invalidate_icache_range)
* - start - virtual start address of region
* - end - virtual end address of region
*/
SYM_FUNC_START_PI(__flush_dcache_area)
SYM_FUNC_START_PI(dcache_clean_inval_poc)
dcache_by_line_op civac, sy, x0, x1, x2, x3
ret
SYM_FUNC_END_PI(__flush_dcache_area)
SYM_FUNC_END_PI(dcache_clean_inval_poc)
/*
* __clean_dcache_area_pou(start, end)
* dcache_clean_pou(start, end)
*
* Ensure that any D-cache lines for the interval [start, end)
* are cleaned to the PoU.
@ -121,17 +121,17 @@ SYM_FUNC_END_PI(__flush_dcache_area)
* - start - virtual start address of region
* - end - virtual end address of region
*/
SYM_FUNC_START(__clean_dcache_area_pou)
SYM_FUNC_START(dcache_clean_pou)
alternative_if ARM64_HAS_CACHE_IDC
dsb ishst
ret
alternative_else_nop_endif
dcache_by_line_op cvau, ish, x0, x1, x2, x3
ret
SYM_FUNC_END(__clean_dcache_area_pou)
SYM_FUNC_END(dcache_clean_pou)
/*
* __inval_dcache_area(start, end)
* dcache_inval_poc(start, end)
*
* Ensure that any D-cache lines for the interval [start, end)
* are invalidated. Any partial lines at the ends of the interval are
@ -141,7 +141,7 @@ SYM_FUNC_END(__clean_dcache_area_pou)
* - end - kernel end address of region
*/
SYM_FUNC_START_LOCAL(__dma_inv_area)
SYM_FUNC_START_PI(__inval_dcache_area)
SYM_FUNC_START_PI(dcache_inval_poc)
/* FALLTHROUGH */
/*
@ -166,11 +166,11 @@ SYM_FUNC_START_PI(__inval_dcache_area)
b.lo 2b
dsb sy
ret
SYM_FUNC_END_PI(__inval_dcache_area)
SYM_FUNC_END_PI(dcache_inval_poc)
SYM_FUNC_END(__dma_inv_area)
/*
* __clean_dcache_area_poc(start, end)
* dcache_clean_poc(start, end)
*
* Ensure that any D-cache lines for the interval [start, end)
* are cleaned to the PoC.
@ -179,7 +179,7 @@ SYM_FUNC_END(__dma_inv_area)
* - end - virtual end address of region
*/
SYM_FUNC_START_LOCAL(__dma_clean_area)
SYM_FUNC_START_PI(__clean_dcache_area_poc)
SYM_FUNC_START_PI(dcache_clean_poc)
/* FALLTHROUGH */
/*
@ -189,11 +189,11 @@ SYM_FUNC_START_PI(__clean_dcache_area_poc)
*/
dcache_by_line_op cvac, sy, x0, x1, x2, x3
ret
SYM_FUNC_END_PI(__clean_dcache_area_poc)
SYM_FUNC_END_PI(dcache_clean_poc)
SYM_FUNC_END(__dma_clean_area)
/*
* __clean_dcache_area_pop(start, end)
* dcache_clean_pop(start, end)
*
* Ensure that any D-cache lines for the interval [start, end)
* are cleaned to the PoP.
@ -201,13 +201,13 @@ SYM_FUNC_END(__dma_clean_area)
* - start - virtual start address of region
* - end - virtual end address of region
*/
SYM_FUNC_START_PI(__clean_dcache_area_pop)
SYM_FUNC_START_PI(dcache_clean_pop)
alternative_if_not ARM64_HAS_DCPOP
b __clean_dcache_area_poc
b dcache_clean_poc
alternative_else_nop_endif
dcache_by_line_op cvap, sy, x0, x1, x2, x3
ret
SYM_FUNC_END_PI(__clean_dcache_area_pop)
SYM_FUNC_END_PI(dcache_clean_pop)
/*
* __dma_flush_area(start, size)

12
arch/arm64/mm/flush.c
View file

@ -17,14 +17,14 @@
void sync_icache_aliases(unsigned long start, unsigned long end)
{
if (icache_is_aliasing()) {
__clean_dcache_area_pou(start, end);
__flush_icache_all();
dcache_clean_pou(start, end);
icache_inval_all_pou();
} else {
/*
* Don't issue kick_all_cpus_sync() after I-cache invalidation
* for user mappings.
*/
__flush_icache_range(start, end);
caches_clean_inval_pou(start, end);
}
}
@ -76,20 +76,20 @@ EXPORT_SYMBOL(flush_dcache_page);
/*
* Additional functions defined in assembly.
*/
EXPORT_SYMBOL(__flush_icache_range);
EXPORT_SYMBOL(caches_clean_inval_pou);
#ifdef CONFIG_ARCH_HAS_PMEM_API
void arch_wb_cache_pmem(void *addr, size_t size)
{
/* Ensure order against any prior non-cacheable writes */
dmb(osh);
__clean_dcache_area_pop((unsigned long)addr, (unsigned long)addr + size);
dcache_clean_pop((unsigned long)addr, (unsigned long)addr + size);
}
EXPORT_SYMBOL_GPL(arch_wb_cache_pmem);
void arch_invalidate_pmem(void *addr, size_t size)
{
__inval_dcache_area((unsigned long)addr, (unsigned long)addr + size);
dcache_inval_poc((unsigned long)addr, (unsigned long)addr + size);
}
EXPORT_SYMBOL_GPL(arch_invalidate_pmem);
#endif