mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
119 lines
3.0 KiB
119 lines
3.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
#ifndef _ASM_POWERPC_BOOK3S_64_TLBFLUSH_HASH_H |
|
#define _ASM_POWERPC_BOOK3S_64_TLBFLUSH_HASH_H |
|
|
|
/* |
|
* TLB flushing for 64-bit hash-MMU CPUs |
|
*/ |
|
|
|
#include <linux/percpu.h> |
|
#include <asm/page.h> |
|
|
|
#define PPC64_TLB_BATCH_NR 192 |
|
|
|
struct ppc64_tlb_batch { |
|
int active; |
|
unsigned long index; |
|
struct mm_struct *mm; |
|
real_pte_t pte[PPC64_TLB_BATCH_NR]; |
|
unsigned long vpn[PPC64_TLB_BATCH_NR]; |
|
unsigned int psize; |
|
int ssize; |
|
}; |
|
DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch); |
|
|
|
extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch); |
|
|
|
#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE |
|
|
|
static inline void arch_enter_lazy_mmu_mode(void) |
|
{ |
|
struct ppc64_tlb_batch *batch; |
|
|
|
if (radix_enabled()) |
|
return; |
|
batch = this_cpu_ptr(&ppc64_tlb_batch); |
|
batch->active = 1; |
|
} |
|
|
|
static inline void arch_leave_lazy_mmu_mode(void) |
|
{ |
|
struct ppc64_tlb_batch *batch; |
|
|
|
if (radix_enabled()) |
|
return; |
|
batch = this_cpu_ptr(&ppc64_tlb_batch); |
|
|
|
if (batch->index) |
|
__flush_tlb_pending(batch); |
|
batch->active = 0; |
|
} |
|
|
|
#define arch_flush_lazy_mmu_mode() do {} while (0) |
|
|
|
extern void hash__tlbiel_all(unsigned int action); |
|
|
|
extern void flush_hash_page(unsigned long vpn, real_pte_t pte, int psize, |
|
int ssize, unsigned long flags); |
|
extern void flush_hash_range(unsigned long number, int local); |
|
extern void flush_hash_hugepage(unsigned long vsid, unsigned long addr, |
|
pmd_t *pmdp, unsigned int psize, int ssize, |
|
unsigned long flags); |
|
static inline void hash__local_flush_tlb_mm(struct mm_struct *mm) |
|
{ |
|
} |
|
|
|
static inline void hash__flush_tlb_mm(struct mm_struct *mm) |
|
{ |
|
} |
|
|
|
static inline void hash__local_flush_all_mm(struct mm_struct *mm) |
|
{ |
|
/* |
|
* There's no Page Walk Cache for hash, so what is needed is |
|
* the same as flush_tlb_mm(), which doesn't really make sense |
|
* with hash. So the only thing we could do is flush the |
|
* entire LPID! Punt for now, as it's not being used. |
|
*/ |
|
WARN_ON_ONCE(1); |
|
} |
|
|
|
static inline void hash__flush_all_mm(struct mm_struct *mm) |
|
{ |
|
/* |
|
* There's no Page Walk Cache for hash, so what is needed is |
|
* the same as flush_tlb_mm(), which doesn't really make sense |
|
* with hash. So the only thing we could do is flush the |
|
* entire LPID! Punt for now, as it's not being used. |
|
*/ |
|
WARN_ON_ONCE(1); |
|
} |
|
|
|
static inline void hash__local_flush_tlb_page(struct vm_area_struct *vma, |
|
unsigned long vmaddr) |
|
{ |
|
} |
|
|
|
static inline void hash__flush_tlb_page(struct vm_area_struct *vma, |
|
unsigned long vmaddr) |
|
{ |
|
} |
|
|
|
static inline void hash__flush_tlb_range(struct vm_area_struct *vma, |
|
unsigned long start, unsigned long end) |
|
{ |
|
} |
|
|
|
static inline void hash__flush_tlb_kernel_range(unsigned long start, |
|
unsigned long end) |
|
{ |
|
} |
|
|
|
|
|
struct mmu_gather; |
|
extern void hash__tlb_flush(struct mmu_gather *tlb); |
|
/* Private function for use by PCI IO mapping code */ |
|
extern void __flush_hash_table_range(unsigned long start, unsigned long end); |
|
extern void flush_tlb_pmd_range(struct mm_struct *mm, pmd_t *pmd, |
|
unsigned long addr); |
|
#endif /* _ASM_POWERPC_BOOK3S_64_TLBFLUSH_HASH_H */
|
|
|