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-rw-r--r--arch/nds32/mm/Makefile10
-rw-r--r--arch/nds32/mm/alignment.c578
-rw-r--r--arch/nds32/mm/cacheflush.c338
-rw-r--r--arch/nds32/mm/extable.c16
-rw-r--r--arch/nds32/mm/fault.c396
-rw-r--r--arch/nds32/mm/init.c263
-rw-r--r--arch/nds32/mm/mm-nds32.c96
-rw-r--r--arch/nds32/mm/mmap.c73
-rw-r--r--arch/nds32/mm/proc.c536
-rw-r--r--arch/nds32/mm/tlb.c50
10 files changed, 0 insertions, 2356 deletions
diff --git a/arch/nds32/mm/Makefile b/arch/nds32/mm/Makefile
deleted file mode 100644
index 14fb2e8eb036..000000000000
--- a/arch/nds32/mm/Makefile
+++ /dev/null
@@ -1,10 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-y := extable.o tlb.o fault.o init.o mmap.o \
- mm-nds32.o cacheflush.o proc.o
-
-obj-$(CONFIG_ALIGNMENT_TRAP) += alignment.o
-
-ifdef CONFIG_FUNCTION_TRACER
-CFLAGS_REMOVE_proc.o = $(CC_FLAGS_FTRACE)
-endif
-CFLAGS_proc.o += -fomit-frame-pointer
diff --git a/arch/nds32/mm/alignment.c b/arch/nds32/mm/alignment.c
deleted file mode 100644
index 1eb7ded6992b..000000000000
--- a/arch/nds32/mm/alignment.c
+++ /dev/null
@@ -1,578 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/proc_fs.h>
-#include <linux/uaccess.h>
-#include <linux/sysctl.h>
-#include <asm/unaligned.h>
-
-#define DEBUG(enable, tagged, ...) \
- do{ \
- if (enable) { \
- if (tagged) \
- pr_warn("[ %30s() ] ", __func__); \
- pr_warn(__VA_ARGS__); \
- } \
- } while (0)
-
-#define RT(inst) (((inst) >> 20) & 0x1FUL)
-#define RA(inst) (((inst) >> 15) & 0x1FUL)
-#define RB(inst) (((inst) >> 10) & 0x1FUL)
-#define SV(inst) (((inst) >> 8) & 0x3UL)
-#define IMM(inst) (((inst) >> 0) & 0x7FFFUL)
-
-#define RA3(inst) (((inst) >> 3) & 0x7UL)
-#define RT3(inst) (((inst) >> 6) & 0x7UL)
-#define IMM3U(inst) (((inst) >> 0) & 0x7UL)
-
-#define RA5(inst) (((inst) >> 0) & 0x1FUL)
-#define RT4(inst) (((inst) >> 5) & 0xFUL)
-
-#define GET_IMMSVAL(imm_value) \
- (((imm_value >> 14) & 0x1) ? (imm_value - 0x8000) : imm_value)
-
-#define __get8_data(val,addr,err) \
- __asm__( \
- "1: lbi.bi %1, [%2], #1\n" \
- "2:\n" \
- " .pushsection .text.fixup,\"ax\"\n" \
- " .align 2\n" \
- "3: movi %0, #1\n" \
- " j 2b\n" \
- " .popsection\n" \
- " .pushsection __ex_table,\"a\"\n" \
- " .align 3\n" \
- " .long 1b, 3b\n" \
- " .popsection\n" \
- : "=r" (err), "=&r" (val), "=r" (addr) \
- : "0" (err), "2" (addr))
-
-#define get16_data(addr, val_ptr) \
- do { \
- unsigned int err = 0, v, a = addr; \
- __get8_data(v,a,err); \
- *val_ptr = v << 0; \
- __get8_data(v,a,err); \
- *val_ptr |= v << 8; \
- if (err) \
- goto fault; \
- *val_ptr = le16_to_cpu(*val_ptr); \
- } while(0)
-
-#define get32_data(addr, val_ptr) \
- do { \
- unsigned int err = 0, v, a = addr; \
- __get8_data(v,a,err); \
- *val_ptr = v << 0; \
- __get8_data(v,a,err); \
- *val_ptr |= v << 8; \
- __get8_data(v,a,err); \
- *val_ptr |= v << 16; \
- __get8_data(v,a,err); \
- *val_ptr |= v << 24; \
- if (err) \
- goto fault; \
- *val_ptr = le32_to_cpu(*val_ptr); \
- } while(0)
-
-#define get_data(addr, val_ptr, len) \
- if (len == 2) \
- get16_data(addr, val_ptr); \
- else \
- get32_data(addr, val_ptr);
-
-#define set16_data(addr, val) \
- do { \
- unsigned int err = 0, *ptr = addr ; \
- val = le32_to_cpu(val); \
- __asm__( \
- "1: sbi.bi %2, [%1], #1\n" \
- " srli %2, %2, #8\n" \
- "2: sbi %2, [%1]\n" \
- "3:\n" \
- " .pushsection .text.fixup,\"ax\"\n" \
- " .align 2\n" \
- "4: movi %0, #1\n" \
- " j 3b\n" \
- " .popsection\n" \
- " .pushsection __ex_table,\"a\"\n" \
- " .align 3\n" \
- " .long 1b, 4b\n" \
- " .long 2b, 4b\n" \
- " .popsection\n" \
- : "=r" (err), "+r" (ptr), "+r" (val) \
- : "0" (err) \
- ); \
- if (err) \
- goto fault; \
- } while(0)
-
-#define set32_data(addr, val) \
- do { \
- unsigned int err = 0, *ptr = addr ; \
- val = le32_to_cpu(val); \
- __asm__( \
- "1: sbi.bi %2, [%1], #1\n" \
- " srli %2, %2, #8\n" \
- "2: sbi.bi %2, [%1], #1\n" \
- " srli %2, %2, #8\n" \
- "3: sbi.bi %2, [%1], #1\n" \
- " srli %2, %2, #8\n" \
- "4: sbi %2, [%1]\n" \
- "5:\n" \
- " .pushsection .text.fixup,\"ax\"\n" \
- " .align 2\n" \
- "6: movi %0, #1\n" \
- " j 5b\n" \
- " .popsection\n" \
- " .pushsection __ex_table,\"a\"\n" \
- " .align 3\n" \
- " .long 1b, 6b\n" \
- " .long 2b, 6b\n" \
- " .long 3b, 6b\n" \
- " .long 4b, 6b\n" \
- " .popsection\n" \
- : "=r" (err), "+r" (ptr), "+r" (val) \
- : "0" (err) \
- ); \
- if (err) \
- goto fault; \
- } while(0)
-#define set_data(addr, val, len) \
- if (len == 2) \
- set16_data(addr, val); \
- else \
- set32_data(addr, val);
-#define NDS32_16BIT_INSTRUCTION 0x80000000
-
-extern pte_t va_present(struct mm_struct *mm, unsigned long addr);
-extern pte_t va_kernel_present(unsigned long addr);
-extern int va_readable(struct pt_regs *regs, unsigned long addr);
-extern int va_writable(struct pt_regs *regs, unsigned long addr);
-
-int unalign_access_mode = 0, unalign_access_debug = 0;
-
-static inline unsigned long *idx_to_addr(struct pt_regs *regs, int idx)
-{
- /* this should be consistent with ptrace.h */
- if (idx >= 0 && idx <= 25) /* R0-R25 */
- return &regs->uregs[0] + idx;
- else if (idx >= 28 && idx <= 30) /* FP, GP, LP */
- return &regs->fp + (idx - 28);
- else if (idx == 31) /* SP */
- return &regs->sp;
- else
- return NULL; /* cause a segfault */
-}
-
-static inline unsigned long get_inst(unsigned long addr)
-{
- return be32_to_cpu(get_unaligned((u32 *) addr));
-}
-
-static inline unsigned long sign_extend(unsigned long val, int len)
-{
- unsigned long ret = 0;
- unsigned char *s, *t;
- int i = 0;
-
- val = cpu_to_le32(val);
-
- s = (void *)&val;
- t = (void *)&ret;
-
- while (i++ < len)
- *t++ = *s++;
-
- if (((*(t - 1)) & 0x80) && (i < 4)) {
-
- while (i++ <= 4)
- *t++ = 0xff;
- }
-
- return le32_to_cpu(ret);
-}
-
-static inline int do_16(unsigned long inst, struct pt_regs *regs)
-{
- int imm, regular, load, len, addr_mode, idx_mode;
- unsigned long unaligned_addr, target_val, source_idx, target_idx,
- shift = 0;
- switch ((inst >> 9) & 0x3F) {
-
- case 0x12: /* LHI333 */
- imm = 1;
- regular = 1;
- load = 1;
- len = 2;
- addr_mode = 3;
- idx_mode = 3;
- break;
- case 0x10: /* LWI333 */
- imm = 1;
- regular = 1;
- load = 1;
- len = 4;
- addr_mode = 3;
- idx_mode = 3;
- break;
- case 0x11: /* LWI333.bi */
- imm = 1;
- regular = 0;
- load = 1;
- len = 4;
- addr_mode = 3;
- idx_mode = 3;
- break;
- case 0x1A: /* LWI450 */
- imm = 0;
- regular = 1;
- load = 1;
- len = 4;
- addr_mode = 5;
- idx_mode = 4;
- break;
- case 0x16: /* SHI333 */
- imm = 1;
- regular = 1;
- load = 0;
- len = 2;
- addr_mode = 3;
- idx_mode = 3;
- break;
- case 0x14: /* SWI333 */
- imm = 1;
- regular = 1;
- load = 0;
- len = 4;
- addr_mode = 3;
- idx_mode = 3;
- break;
- case 0x15: /* SWI333.bi */
- imm = 1;
- regular = 0;
- load = 0;
- len = 4;
- addr_mode = 3;
- idx_mode = 3;
- break;
- case 0x1B: /* SWI450 */
- imm = 0;
- regular = 1;
- load = 0;
- len = 4;
- addr_mode = 5;
- idx_mode = 4;
- break;
-
- default:
- return -EFAULT;
- }
-
- if (addr_mode == 3) {
- unaligned_addr = *idx_to_addr(regs, RA3(inst));
- source_idx = RA3(inst);
- } else {
- unaligned_addr = *idx_to_addr(regs, RA5(inst));
- source_idx = RA5(inst);
- }
-
- if (idx_mode == 3)
- target_idx = RT3(inst);
- else
- target_idx = RT4(inst);
-
- if (imm)
- shift = IMM3U(inst) * len;
-
- if (regular)
- unaligned_addr += shift;
-
- if (load) {
- if (!access_ok((void *)unaligned_addr, len))
- return -EACCES;
-
- get_data(unaligned_addr, &target_val, len);
- *idx_to_addr(regs, target_idx) = target_val;
- } else {
- if (!access_ok((void *)unaligned_addr, len))
- return -EACCES;
- target_val = *idx_to_addr(regs, target_idx);
- set_data((void *)unaligned_addr, target_val, len);
- }
-
- if (!regular)
- *idx_to_addr(regs, source_idx) = unaligned_addr + shift;
- regs->ipc += 2;
-
- return 0;
-fault:
- return -EACCES;
-}
-
-static inline int do_32(unsigned long inst, struct pt_regs *regs)
-{
- int imm, regular, load, len, sign_ext;
- unsigned long unaligned_addr, target_val, shift;
-
- unaligned_addr = *idx_to_addr(regs, RA(inst));
-
- switch ((inst >> 25) << 1) {
-
- case 0x02: /* LHI */
- imm = 1;
- regular = 1;
- load = 1;
- len = 2;
- sign_ext = 0;
- break;
- case 0x0A: /* LHI.bi */
- imm = 1;
- regular = 0;
- load = 1;
- len = 2;
- sign_ext = 0;
- break;
- case 0x22: /* LHSI */
- imm = 1;
- regular = 1;
- load = 1;
- len = 2;
- sign_ext = 1;
- break;
- case 0x2A: /* LHSI.bi */
- imm = 1;
- regular = 0;
- load = 1;
- len = 2;
- sign_ext = 1;
- break;
- case 0x04: /* LWI */
- imm = 1;
- regular = 1;
- load = 1;
- len = 4;
- sign_ext = 0;
- break;
- case 0x0C: /* LWI.bi */
- imm = 1;
- regular = 0;
- load = 1;
- len = 4;
- sign_ext = 0;
- break;
- case 0x12: /* SHI */
- imm = 1;
- regular = 1;
- load = 0;
- len = 2;
- sign_ext = 0;
- break;
- case 0x1A: /* SHI.bi */
- imm = 1;
- regular = 0;
- load = 0;
- len = 2;
- sign_ext = 0;
- break;
- case 0x14: /* SWI */
- imm = 1;
- regular = 1;
- load = 0;
- len = 4;
- sign_ext = 0;
- break;
- case 0x1C: /* SWI.bi */
- imm = 1;
- regular = 0;
- load = 0;
- len = 4;
- sign_ext = 0;
- break;
-
- default:
- switch (inst & 0xff) {
-
- case 0x01: /* LH */
- imm = 0;
- regular = 1;
- load = 1;
- len = 2;
- sign_ext = 0;
- break;
- case 0x05: /* LH.bi */
- imm = 0;
- regular = 0;
- load = 1;
- len = 2;
- sign_ext = 0;
- break;
- case 0x11: /* LHS */
- imm = 0;
- regular = 1;
- load = 1;
- len = 2;
- sign_ext = 1;
- break;
- case 0x15: /* LHS.bi */
- imm = 0;
- regular = 0;
- load = 1;
- len = 2;
- sign_ext = 1;
- break;
- case 0x02: /* LW */
- imm = 0;
- regular = 1;
- load = 1;
- len = 4;
- sign_ext = 0;
- break;
- case 0x06: /* LW.bi */
- imm = 0;
- regular = 0;
- load = 1;
- len = 4;
- sign_ext = 0;
- break;
- case 0x09: /* SH */
- imm = 0;
- regular = 1;
- load = 0;
- len = 2;
- sign_ext = 0;
- break;
- case 0x0D: /* SH.bi */
- imm = 0;
- regular = 0;
- load = 0;
- len = 2;
- sign_ext = 0;
- break;
- case 0x0A: /* SW */
- imm = 0;
- regular = 1;
- load = 0;
- len = 4;
- sign_ext = 0;
- break;
- case 0x0E: /* SW.bi */
- imm = 0;
- regular = 0;
- load = 0;
- len = 4;
- sign_ext = 0;
- break;
-
- default:
- return -EFAULT;
- }
- }
-
- if (imm)
- shift = GET_IMMSVAL(IMM(inst)) * len;
- else
- shift = *idx_to_addr(regs, RB(inst)) << SV(inst);
-
- if (regular)
- unaligned_addr += shift;
-
- if (load) {
-
- if (!access_ok((void *)unaligned_addr, len))
- return -EACCES;
-
- get_data(unaligned_addr, &target_val, len);
-
- if (sign_ext)
- *idx_to_addr(regs, RT(inst)) =
- sign_extend(target_val, len);
- else
- *idx_to_addr(regs, RT(inst)) = target_val;
- } else {
-
- if (!access_ok((void *)unaligned_addr, len))
- return -EACCES;
-
- target_val = *idx_to_addr(regs, RT(inst));
- set_data((void *)unaligned_addr, target_val, len);
- }
-
- if (!regular)
- *idx_to_addr(regs, RA(inst)) = unaligned_addr + shift;
-
- regs->ipc += 4;
-
- return 0;
-fault:
- return -EACCES;
-}
-
-int do_unaligned_access(unsigned long addr, struct pt_regs *regs)
-{
- unsigned long inst;
- int ret = -EFAULT;
- mm_segment_t seg;
-
- inst = get_inst(regs->ipc);
-
- DEBUG((unalign_access_debug > 0), 1,
- "Faulting addr: 0x%08lx, pc: 0x%08lx [inst: 0x%08lx ]\n", addr,
- regs->ipc, inst);
-
- seg = force_uaccess_begin();
- if (inst & NDS32_16BIT_INSTRUCTION)
- ret = do_16((inst >> 16) & 0xffff, regs);
- else
- ret = do_32(inst, regs);
- force_uaccess_end(seg);
-
- return ret;
-}
-
-#ifdef CONFIG_PROC_FS
-
-static struct ctl_table alignment_tbl[3] = {
- {
- .procname = "enable",
- .data = &unalign_access_mode,
- .maxlen = sizeof(unalign_access_mode),
- .mode = 0666,
- .proc_handler = &proc_dointvec
- }
- ,
- {
- .procname = "debug_info",
- .data = &unalign_access_debug,
- .maxlen = sizeof(unalign_access_debug),
- .mode = 0644,
- .proc_handler = &proc_dointvec
- }
- ,
- {}
-};
-
-static struct ctl_table nds32_sysctl_table[2] = {
- {
- .procname = "unaligned_access",
- .mode = 0555,
- .child = alignment_tbl},
- {}
-};
-
-static struct ctl_path nds32_path[2] = {
- {.procname = "nds32"},
- {}
-};
-
-/*
- * Initialize nds32 alignment-correction interface
- */
-static int __init nds32_sysctl_init(void)
-{
- register_sysctl_paths(nds32_path, nds32_sysctl_table);
- return 0;
-}
-
-__initcall(nds32_sysctl_init);
-#endif /* CONFIG_PROC_FS */
diff --git a/arch/nds32/mm/cacheflush.c b/arch/nds32/mm/cacheflush.c
deleted file mode 100644
index 07aac65d1cab..000000000000
--- a/arch/nds32/mm/cacheflush.c
+++ /dev/null
@@ -1,338 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/pagemap.h>
-#include <linux/module.h>
-#include <asm/cacheflush.h>
-#include <asm/proc-fns.h>
-#include <asm/shmparam.h>
-#include <asm/cache_info.h>
-
-extern struct cache_info L1_cache_info[2];
-
-void flush_icache_range(unsigned long start, unsigned long end)
-{
- unsigned long line_size, flags;
- line_size = L1_cache_info[DCACHE].line_size;
- start = start & ~(line_size - 1);
- end = (end + line_size - 1) & ~(line_size - 1);
- local_irq_save(flags);
- cpu_cache_wbinval_range(start, end, 1);
- local_irq_restore(flags);
-}
-EXPORT_SYMBOL(flush_icache_range);
-
-void flush_icache_page(struct vm_area_struct *vma, struct page *page)
-{
- unsigned long flags;
- unsigned long kaddr;
- local_irq_save(flags);
- kaddr = (unsigned long)kmap_atomic(page);
- cpu_cache_wbinval_page(kaddr, vma->vm_flags & VM_EXEC);
- kunmap_atomic((void *)kaddr);
- local_irq_restore(flags);
-}
-
-void flush_icache_user_page(struct vm_area_struct *vma, struct page *page,
- unsigned long addr, int len)
-{
- unsigned long kaddr;
- kaddr = (unsigned long)kmap_atomic(page) + (addr & ~PAGE_MASK);
- flush_icache_range(kaddr, kaddr + len);
- kunmap_atomic((void *)kaddr);
-}
-
-void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr,
- pte_t * pte)
-{
- struct page *page;
- unsigned long pfn = pte_pfn(*pte);
- unsigned long flags;
-
- if (!pfn_valid(pfn))
- return;
-
- if (vma->vm_mm == current->active_mm) {
- local_irq_save(flags);
- __nds32__mtsr_dsb(addr, NDS32_SR_TLB_VPN);
- __nds32__tlbop_rwr(*pte);
- __nds32__isb();
- local_irq_restore(flags);
- }
- page = pfn_to_page(pfn);
-
- if ((test_and_clear_bit(PG_dcache_dirty, &page->flags)) ||
- (vma->vm_flags & VM_EXEC)) {
- unsigned long kaddr;
- local_irq_save(flags);
- kaddr = (unsigned long)kmap_atomic(page);
- cpu_cache_wbinval_page(kaddr, vma->vm_flags & VM_EXEC);
- kunmap_atomic((void *)kaddr);
- local_irq_restore(flags);
- }
-}
-#ifdef CONFIG_CPU_CACHE_ALIASING
-extern pte_t va_present(struct mm_struct *mm, unsigned long addr);
-
-static inline unsigned long aliasing(unsigned long addr, unsigned long page)
-{
- return ((addr & PAGE_MASK) ^ page) & (SHMLBA - 1);
-}
-
-static inline unsigned long kremap0(unsigned long uaddr, unsigned long pa)
-{
- unsigned long kaddr, pte;
-
-#define BASE_ADDR0 0xffffc000
- kaddr = BASE_ADDR0 | (uaddr & L1_cache_info[DCACHE].aliasing_mask);
- pte = (pa | PAGE_KERNEL);
- __nds32__mtsr_dsb(kaddr, NDS32_SR_TLB_VPN);
- __nds32__tlbop_rwlk(pte);
- __nds32__isb();
- return kaddr;
-}
-
-static inline void kunmap01(unsigned long kaddr)
-{
- __nds32__tlbop_unlk(kaddr);
- __nds32__tlbop_inv(kaddr);
- __nds32__isb();
-}
-
-static inline unsigned long kremap1(unsigned long uaddr, unsigned long pa)
-{
- unsigned long kaddr, pte;
-
-#define BASE_ADDR1 0xffff8000
- kaddr = BASE_ADDR1 | (uaddr & L1_cache_info[DCACHE].aliasing_mask);
- pte = (pa | PAGE_KERNEL);
- __nds32__mtsr_dsb(kaddr, NDS32_SR_TLB_VPN);
- __nds32__tlbop_rwlk(pte);
- __nds32__isb();
- return kaddr;
-}
-
-void flush_cache_mm(struct mm_struct *mm)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- cpu_dcache_wbinval_all();
- cpu_icache_inval_all();
- local_irq_restore(flags);
-}
-
-void flush_cache_dup_mm(struct mm_struct *mm)
-{
-}
-
-void flush_cache_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
- unsigned long flags;
-
- if ((end - start) > 8 * PAGE_SIZE) {
- cpu_dcache_wbinval_all();
- if (vma->vm_flags & VM_EXEC)
- cpu_icache_inval_all();
- return;
- }
- local_irq_save(flags);
- while (start < end) {
- if (va_present(vma->vm_mm, start))
- cpu_cache_wbinval_page(start, vma->vm_flags & VM_EXEC);
- start += PAGE_SIZE;
- }
- local_irq_restore(flags);
- return;
-}
-
-void flush_cache_page(struct vm_area_struct *vma,
- unsigned long addr, unsigned long pfn)
-{
- unsigned long vto, flags;
-
- local_irq_save(flags);
- vto = kremap0(addr, pfn << PAGE_SHIFT);
- cpu_cache_wbinval_page(vto, vma->vm_flags & VM_EXEC);
- kunmap01(vto);
- local_irq_restore(flags);
-}
-
-void flush_cache_vmap(unsigned long start, unsigned long end)
-{
- cpu_dcache_wbinval_all();
- cpu_icache_inval_all();
-}
-
-void flush_cache_vunmap(unsigned long start, unsigned long end)
-{
- cpu_dcache_wbinval_all();
- cpu_icache_inval_all();
-}
-
-void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
- struct page *to)
-{
- cpu_dcache_wbinval_page((unsigned long)vaddr);
- cpu_icache_inval_page((unsigned long)vaddr);
- copy_page(vto, vfrom);
- cpu_dcache_wbinval_page((unsigned long)vto);
- cpu_icache_inval_page((unsigned long)vto);
-}
-
-void clear_user_page(void *addr, unsigned long vaddr, struct page *page)
-{
- cpu_dcache_wbinval_page((unsigned long)vaddr);
- cpu_icache_inval_page((unsigned long)vaddr);
- clear_page(addr);
- cpu_dcache_wbinval_page((unsigned long)addr);
- cpu_icache_inval_page((unsigned long)addr);
-}
-
-void copy_user_highpage(struct page *to, struct page *from,
- unsigned long vaddr, struct vm_area_struct *vma)
-{
- unsigned long vto, vfrom, flags, kto, kfrom, pfrom, pto;
- kto = ((unsigned long)page_address(to) & PAGE_MASK);
- kfrom = ((unsigned long)page_address(from) & PAGE_MASK);
- pto = page_to_phys(to);
- pfrom = page_to_phys(from);
-
- local_irq_save(flags);
- if (aliasing(vaddr, (unsigned long)kfrom))
- cpu_dcache_wb_page((unsigned long)kfrom);
- vto = kremap0(vaddr, pto);
- vfrom = kremap1(vaddr, pfrom);
- copy_page((void *)vto, (void *)vfrom);
- kunmap01(vfrom);
- kunmap01(vto);
- local_irq_restore(flags);
-}
-
-EXPORT_SYMBOL(copy_user_highpage);
-
-void clear_user_highpage(struct page *page, unsigned long vaddr)
-{
- unsigned long vto, flags, kto;
-
- kto = ((unsigned long)page_address(page) & PAGE_MASK);
-
- local_irq_save(flags);
- if (aliasing(kto, vaddr) && kto != 0) {
- cpu_dcache_inval_page(kto);
- cpu_icache_inval_page(kto);
- }
- vto = kremap0(vaddr, page_to_phys(page));
- clear_page((void *)vto);
- kunmap01(vto);
- local_irq_restore(flags);
-}
-
-EXPORT_SYMBOL(clear_user_highpage);
-
-void flush_dcache_page(struct page *page)
-{
- struct address_space *mapping;
-
- mapping = page_mapping_file(page);
- if (mapping && !mapping_mapped(mapping))
- set_bit(PG_dcache_dirty, &page->flags);
- else {
- unsigned long kaddr, flags;
-
- kaddr = (unsigned long)page_address(page);
- local_irq_save(flags);
- cpu_dcache_wbinval_page(kaddr);
- if (mapping) {
- unsigned long vaddr, kto;
-
- vaddr = page->index << PAGE_SHIFT;
- if (aliasing(vaddr, kaddr)) {
- kto = kremap0(vaddr, page_to_phys(page));
- cpu_dcache_wbinval_page(kto);
- kunmap01(kto);
- }
- }
- local_irq_restore(flags);
- }
-}
-EXPORT_SYMBOL(flush_dcache_page);
-
-void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
- unsigned long vaddr, void *dst, void *src, int len)
-{
- unsigned long line_size, start, end, vto, flags;
-
- local_irq_save(flags);
- vto = kremap0(vaddr, page_to_phys(page));
- dst = (void *)(vto | (vaddr & (PAGE_SIZE - 1)));
- memcpy(dst, src, len);
- if (vma->vm_flags & VM_EXEC) {
- line_size = L1_cache_info[DCACHE].line_size;
- start = (unsigned long)dst & ~(line_size - 1);
- end =
- ((unsigned long)dst + len + line_size - 1) & ~(line_size -
- 1);
- cpu_cache_wbinval_range(start, end, 1);
- }
- kunmap01(vto);
- local_irq_restore(flags);
-}
-
-void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
- unsigned long vaddr, void *dst, void *src, int len)
-{
- unsigned long vto, flags;
-
- local_irq_save(flags);
- vto = kremap0(vaddr, page_to_phys(page));
- src = (void *)(vto | (vaddr & (PAGE_SIZE - 1)));
- memcpy(dst, src, len);
- kunmap01(vto);
- local_irq_restore(flags);
-}
-
-void flush_anon_page(struct vm_area_struct *vma,
- struct page *page, unsigned long vaddr)
-{
- unsigned long kaddr, flags, ktmp;
- if (!PageAnon(page))
- return;
-
- if (vma->vm_mm != current->active_mm)
- return;
-
- local_irq_save(flags);
- if (vma->vm_flags & VM_EXEC)
- cpu_icache_inval_page(vaddr & PAGE_MASK);
- kaddr = (unsigned long)page_address(page);
- if (aliasing(vaddr, kaddr)) {
- ktmp = kremap0(vaddr, page_to_phys(page));
- cpu_dcache_wbinval_page(ktmp);
- kunmap01(ktmp);
- }
- local_irq_restore(flags);
-}
-
-void flush_kernel_vmap_range(void *addr, int size)
-{
- unsigned long flags;
- local_irq_save(flags);
- cpu_dcache_wb_range((unsigned long)addr, (unsigned long)addr + size);
- local_irq_restore(flags);
-}
-EXPORT_SYMBOL(flush_kernel_vmap_range);
-
-void invalidate_kernel_vmap_range(void *addr, int size)
-{
- unsigned long flags;
- local_irq_save(flags);
- cpu_dcache_inval_range((unsigned long)addr, (unsigned long)addr + size);
- local_irq_restore(flags);
-}
-EXPORT_SYMBOL(invalidate_kernel_vmap_range);
-#endif
diff --git a/arch/nds32/mm/extable.c b/arch/nds32/mm/extable.c
deleted file mode 100644
index db7f0a7c8966..000000000000
--- a/arch/nds32/mm/extable.c
+++ /dev/null
@@ -1,16 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/extable.h>
-#include <linux/uaccess.h>
-
-int fixup_exception(struct pt_regs *regs)
-{
- const struct exception_table_entry *fixup;
-
- fixup = search_exception_tables(instruction_pointer(regs));
- if (fixup)
- regs->ipc = fixup->fixup;
-
- return fixup != NULL;
-}
diff --git a/arch/nds32/mm/fault.c b/arch/nds32/mm/fault.c
deleted file mode 100644
index 636977a1c8b9..000000000000
--- a/arch/nds32/mm/fault.c
+++ /dev/null
@@ -1,396 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/extable.h>
-#include <linux/module.h>
-#include <linux/signal.h>
-#include <linux/ptrace.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/hardirq.h>
-#include <linux/uaccess.h>
-#include <linux/perf_event.h>
-
-#include <asm/tlbflush.h>
-
-extern void __noreturn die(const char *str, struct pt_regs *regs, long err);
-
-/*
- * This is useful to dump out the page tables associated with
- * 'addr' in mm 'mm'.
- */
-void show_pte(struct mm_struct *mm, unsigned long addr)
-{
- pgd_t *pgd;
- if (!mm)
- mm = &init_mm;
-
- pr_alert("pgd = %p\n", mm->pgd);
- pgd = pgd_offset(mm, addr);
- pr_alert("[%08lx] *pgd=%08lx", addr, pgd_val(*pgd));
-
- do {
- p4d_t *p4d;
- pud_t *pud;
- pmd_t *pmd;
-
- if (pgd_none(*pgd))
- break;
-
- if (pgd_bad(*pgd)) {
- pr_alert("(bad)");
- break;
- }
-
- p4d = p4d_offset(pgd, addr);
- pud = pud_offset(p4d, addr);
- pmd = pmd_offset(pud, addr);
-#if PTRS_PER_PMD != 1
- pr_alert(", *pmd=%08lx", pmd_val(*pmd));
-#endif
-
- if (pmd_none(*pmd))
- break;
-
- if (pmd_bad(*pmd)) {
- pr_alert("(bad)");
- break;
- }
-
- if (IS_ENABLED(CONFIG_HIGHMEM))
- {
- pte_t *pte;
- /* We must not map this if we have highmem enabled */
- pte = pte_offset_map(pmd, addr);
- pr_alert(", *pte=%08lx", pte_val(*pte));
- pte_unmap(pte);
- }
- } while (0);
-
- pr_alert("\n");
-}
-
-void do_page_fault(unsigned long entry, unsigned long addr,
- unsigned int error_code, struct pt_regs *regs)
-{
- struct task_struct *tsk;
- struct mm_struct *mm;
- struct vm_area_struct *vma;
- int si_code;
- vm_fault_t fault;
- unsigned int mask = VM_ACCESS_FLAGS;
- unsigned int flags = FAULT_FLAG_DEFAULT;
-
- error_code = error_code & (ITYPE_mskINST | ITYPE_mskETYPE);
- tsk = current;
- mm = tsk->mm;
- si_code = SEGV_MAPERR;
- /*
- * We fault-in kernel-space virtual memory on-demand. The
- * 'reference' page table is init_mm.pgd.
- *
- * NOTE! We MUST NOT take any locks for this case. We may
- * be in an interrupt or a critical region, and should
- * only copy the information from the master page table,
- * nothing more.
- */
- if (addr >= TASK_SIZE) {
- if (user_mode(regs))
- goto bad_area_nosemaphore;
-
- if (addr >= TASK_SIZE && addr < VMALLOC_END
- && (entry == ENTRY_PTE_NOT_PRESENT))
- goto vmalloc_fault;
- else
- goto no_context;
- }
-
- /* Send a signal to the task for handling the unalignment access. */
- if (entry == ENTRY_GENERAL_EXCPETION
- && error_code == ETYPE_ALIGNMENT_CHECK) {
- if (user_mode(regs))
- goto bad_area_nosemaphore;
- else
- goto no_context;
- }
-
- /*
- * If we're in an interrupt or have no user
- * context, we must not take the fault..
- */
- if (unlikely(faulthandler_disabled() || !mm))
- goto no_context;
-
- perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, addr);
-
- /*
- * As per x86, we may deadlock here. However, since the kernel only
- * validly references user space from well defined areas of the code,
- * we can bug out early if this is from code which shouldn't.
- */
- if (unlikely(!mmap_read_trylock(mm))) {
- if (!user_mode(regs) &&
- !search_exception_tables(instruction_pointer(regs)))
- goto no_context;
-retry:
- mmap_read_lock(mm);
- } else {
- /*
- * The above down_read_trylock() might have succeeded in which
- * case, we'll have missed the might_sleep() from down_read().
- */
- might_sleep();
- if (IS_ENABLED(CONFIG_DEBUG_VM)) {
- if (!user_mode(regs) &&
- !search_exception_tables(instruction_pointer(regs)))
- goto no_context;
- }
- }
-
- vma = find_vma(mm, addr);
-
- if (unlikely(!vma))
- goto bad_area;
-
- if (vma->vm_start <= addr)
- goto good_area;
-
- if (unlikely(!(vma->vm_flags & VM_GROWSDOWN)))
- goto bad_area;
-
- if (unlikely(expand_stack(vma, addr)))
- goto bad_area;
-
- /*
- * Ok, we have a good vm_area for this memory access, so
- * we can handle it..
- */
-
-good_area:
- si_code = SEGV_ACCERR;
-
- /* first do some preliminary protection checks */
- if (entry == ENTRY_PTE_NOT_PRESENT) {
- if (error_code & ITYPE_mskINST)
- mask = VM_EXEC;
- else {
- mask = VM_READ | VM_WRITE;
- }
- } else if (entry == ENTRY_TLB_MISC) {
- switch (error_code & ITYPE_mskETYPE) {
- case RD_PROT:
- mask = VM_READ;
- break;
- case WRT_PROT:
- mask = VM_WRITE;
- flags |= FAULT_FLAG_WRITE;
- break;
- case NOEXEC:
- mask = VM_EXEC;
- break;
- case PAGE_MODIFY:
- mask = VM_WRITE;
- flags |= FAULT_FLAG_WRITE;
- break;
- case ACC_BIT:
- BUG();
- default:
- break;
- }
-
- }
- if (!(vma->vm_flags & mask))
- goto bad_area;
-
- /*
- * If for any reason at all we couldn't handle the fault,
- * make sure we exit gracefully rather than endlessly redo
- * the fault.
- */
-
- fault = handle_mm_fault(vma, addr, flags, regs);
-
- /*
- * If we need to retry but a fatal signal is pending, handle the
- * signal first. We do not need to release the mmap_lock because it
- * would already be released in __lock_page_or_retry in mm/filemap.c.
- */
- if (fault_signal_pending(fault, regs)) {
- if (!user_mode(regs))
- goto no_context;
- return;
- }
-
- if (unlikely(fault & VM_FAULT_ERROR)) {
- if (fault & VM_FAULT_OOM)
- goto out_of_memory;
- else if (fault & VM_FAULT_SIGBUS)
- goto do_sigbus;
- else
- goto bad_area;
- }
-
- if (fault & VM_FAULT_RETRY) {
- flags |= FAULT_FLAG_TRIED;
-
- /* No need to mmap_read_unlock(mm) as we would
- * have already released it in __lock_page_or_retry
- * in mm/filemap.c.
- */
- goto retry;
- }
-
- mmap_read_unlock(mm);
- return;
-
- /*
- * Something tried to access memory that isn't in our memory map..
- * Fix it, but check if it's kernel or user first..
- */
-bad_area:
- mmap_read_unlock(mm);
-
-bad_area_nosemaphore:
-
- /* User mode accesses just cause a SIGSEGV */
-
- if (user_mode(regs)) {
- tsk->thread.address = addr;
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = entry;
- force_sig_fault(SIGSEGV, si_code, (void __user *)addr);
- return;
- }
-
-no_context:
-
- /* Are we prepared to handle this kernel fault?
- *
- * (The kernel has valid exception-points in the source
- * when it acesses user-memory. When it fails in one
- * of those points, we find it in a table and do a jump
- * to some fixup code that loads an appropriate error
- * code)
- */
-
- {
- const struct exception_table_entry *entry;
-
- if ((entry =
- search_exception_tables(instruction_pointer(regs))) !=
- NULL) {
- /* Adjust the instruction pointer in the stackframe */
- instruction_pointer(regs) = entry->fixup;
- return;
- }
- }
-
- /*
- * Oops. The kernel tried to access some bad page. We'll have to
- * terminate things with extreme prejudice.
- */
-
- bust_spinlocks(1);
- pr_alert("Unable to handle kernel %s at virtual address %08lx\n",
- (addr < PAGE_SIZE) ? "NULL pointer dereference" :
- "paging request", addr);
-
- show_pte(mm, addr);
- die("Oops", regs, error_code);
-
- /*
- * We ran out of memory, or some other thing happened to us that made
- * us unable to handle the page fault gracefully.
- */
-
-out_of_memory:
- mmap_read_unlock(mm);
- if (!user_mode(regs))
- goto no_context;
- pagefault_out_of_memory();
- return;
-
-do_sigbus:
- mmap_read_unlock(mm);
-
- /* Kernel mode? Handle exceptions or die */
- if (!user_mode(regs))
- goto no_context;
-
- /*
- * Send a sigbus
- */
- tsk->thread.address = addr;
- tsk->thread.error_code = error_code;
- tsk->thread.trap_no = entry;
- force_sig_fault(SIGBUS, BUS_ADRERR, (void __user *)addr);
-
- return;
-
-vmalloc_fault:
- {
- /*
- * Synchronize this task's top level page-table
- * with the 'reference' page table.
- *
- * Use current_pgd instead of tsk->active_mm->pgd
- * since the latter might be unavailable if this
- * code is executed in a misfortunately run irq
- * (like inside schedule() between switch_mm and
- * switch_to...).
- */
-
- unsigned int index = pgd_index(addr);
- pgd_t *pgd, *pgd_k;
- p4d_t *p4d, *p4d_k;
- pud_t *pud, *pud_k;
- pmd_t *pmd, *pmd_k;
- pte_t *pte_k;
-
- pgd = (pgd_t *) __va(__nds32__mfsr(NDS32_SR_L1_PPTB)) + index;
- pgd_k = init_mm.pgd + index;
-
- if (!pgd_present(*pgd_k))
- goto no_context;
-
- p4d = p4d_offset(pgd, addr);
- p4d_k = p4d_offset(pgd_k, addr);
- if (!p4d_present(*p4d_k))
- goto no_context;
-
- pud = pud_offset(p4d, addr);
- pud_k = pud_offset(p4d_k, addr);
- if (!pud_present(*pud_k))
- goto no_context;
-
- pmd = pmd_offset(pud, addr);
- pmd_k = pmd_offset(pud_k, addr);
- if (!pmd_present(*pmd_k))
- goto no_context;
-
- if (!pmd_present(*pmd))
- set_pmd(pmd, *pmd_k);
- else
- BUG_ON(pmd_page(*pmd) != pmd_page(*pmd_k));
-
- /*
- * Since the vmalloc area is global, we don't
- * need to copy individual PTE's, it is enough to
- * copy the pgd pointer into the pte page of the
- * root task. If that is there, we'll find our pte if
- * it exists.
- */
-
- /* Make sure the actual PTE exists as well to
- * catch kernel vmalloc-area accesses to non-mapped
- * addres. If we don't do this, this will just
- * silently loop forever.
- */
-
- pte_k = pte_offset_kernel(pmd_k, addr);
- if (!pte_present(*pte_k))
- goto no_context;
-
- return;
- }
-}
diff --git a/arch/nds32/mm/init.c b/arch/nds32/mm/init.c
deleted file mode 100644
index f63f839738c4..000000000000
--- a/arch/nds32/mm/init.c
+++ /dev/null
@@ -1,263 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 1995-2005 Russell King
-// Copyright (C) 2012 ARM Ltd.
-// Copyright (C) 2013-2017 Andes Technology Corporation
-
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/swap.h>
-#include <linux/init.h>
-#include <linux/memblock.h>
-#include <linux/mman.h>
-#include <linux/nodemask.h>
-#include <linux/initrd.h>
-#include <linux/highmem.h>
-
-#include <asm/sections.h>
-#include <asm/setup.h>
-#include <asm/tlb.h>
-#include <asm/page.h>
-
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-DEFINE_SPINLOCK(anon_alias_lock);
-extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
-
-/*
- * empty_zero_page is a special page that is used for
- * zero-initialized data and COW.
- */
-struct page *empty_zero_page;
-EXPORT_SYMBOL(empty_zero_page);
-
-static void __init zone_sizes_init(void)
-{
- unsigned long max_zone_pfn[MAX_NR_ZONES] = { 0 };
-
- max_zone_pfn[ZONE_NORMAL] = max_low_pfn;
-#ifdef CONFIG_HIGHMEM
- max_zone_pfn[ZONE_HIGHMEM] = max_pfn;
-#endif
- free_area_init(max_zone_pfn);
-
-}
-
-/*
- * Map all physical memory under high_memory into kernel's address space.
- *
- * This is explicitly coded for two-level page tables, so if you need
- * something else then this needs to change.
- */
-static void __init map_ram(void)
-{
- unsigned long v, p, e;
- pgd_t *pge;
- p4d_t *p4e;
- pud_t *pue;
- pmd_t *pme;
- pte_t *pte;
- /* These mark extents of read-only kernel pages...
- * ...from vmlinux.lds.S
- */
-
- p = (u32) memblock_start_of_DRAM() & PAGE_MASK;
- e = min((u32) memblock_end_of_DRAM(), (u32) __pa(high_memory));
-
- v = (u32) __va(p);
- pge = pgd_offset_k(v);
-
- while (p < e) {
- int j;
- p4e = p4d_offset(pge, v);
- pue = pud_offset(p4e, v);
- pme = pmd_offset(pue, v);
-
- if ((u32) pue != (u32) pge || (u32) pme != (u32) pge) {
- panic("%s: Kernel hardcoded for "
- "two-level page tables", __func__);
- }
-
- /* Alloc one page for holding PTE's... */
- pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
- if (!pte)
- panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
- __func__, PAGE_SIZE, PAGE_SIZE);
- set_pmd(pme, __pmd(__pa(pte) + _PAGE_KERNEL_TABLE));
-
- /* Fill the newly allocated page with PTE'S */
- for (j = 0; p < e && j < PTRS_PER_PTE;
- v += PAGE_SIZE, p += PAGE_SIZE, j++, pte++) {
- /* Create mapping between p and v. */
- /* TODO: more fine grant for page access permission */
- set_pte(pte, __pte(p + pgprot_val(PAGE_KERNEL)));
- }
-
- pge++;
- }
-}
-static pmd_t *fixmap_pmd_p;
-static void __init fixedrange_init(void)
-{
- unsigned long vaddr;
- pmd_t *pmd;
-#ifdef CONFIG_HIGHMEM
- pte_t *pte;
-#endif /* CONFIG_HIGHMEM */
-
- /*
- * Fixed mappings:
- */
- vaddr = __fix_to_virt(__end_of_fixed_addresses - 1);
- pmd = pmd_off_k(vaddr);
- fixmap_pmd_p = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
- if (!fixmap_pmd_p)
- panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
- __func__, PAGE_SIZE, PAGE_SIZE);
- set_pmd(pmd, __pmd(__pa(fixmap_pmd_p) + _PAGE_KERNEL_TABLE));
-
-#ifdef CONFIG_HIGHMEM
- /*
- * Permanent kmaps:
- */
- vaddr = PKMAP_BASE;
-
- pmd = pmd_off_k(vaddr);
- pte = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
- if (!pte)
- panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
- __func__, PAGE_SIZE, PAGE_SIZE);
- set_pmd(pmd, __pmd(__pa(pte) + _PAGE_KERNEL_TABLE));
- pkmap_page_table = pte;
-#endif /* CONFIG_HIGHMEM */
-}
-
-/*
- * paging_init() sets up the page tables, initialises the zone memory
- * maps, and sets up the zero page, bad page and bad page tables.
- */
-void __init paging_init(void)
-{
- int i;
- void *zero_page;
-
- pr_info("Setting up paging and PTEs.\n");
- /* clear out the init_mm.pgd that will contain the kernel's mappings */
- for (i = 0; i < PTRS_PER_PGD; i++)
- swapper_pg_dir[i] = __pgd(1);
-
- map_ram();
-
- fixedrange_init();
-
- /* allocate space for empty_zero_page */
- zero_page = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
- if (!zero_page)
- panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
- __func__, PAGE_SIZE, PAGE_SIZE);
- zone_sizes_init();
-
- empty_zero_page = virt_to_page(zero_page);
- flush_dcache_page(empty_zero_page);
-}
-
-static inline void __init free_highmem(void)
-{
-#ifdef CONFIG_HIGHMEM
- unsigned long pfn;
- for (pfn = PFN_UP(__pa(high_memory)); pfn < max_pfn; pfn++) {
- phys_addr_t paddr = (phys_addr_t) pfn << PAGE_SHIFT;
- if (!memblock_is_reserved(paddr))
- free_highmem_page(pfn_to_page(pfn));
- }
-#endif
-}
-
-static void __init set_max_mapnr_init(void)
-{
- max_mapnr = max_pfn;
-}
-
-/*
- * mem_init() marks the free areas in the mem_map and tells us how much
- * memory is free. This is done after various parts of the system have
- * claimed their memory after the kernel image.
- */
-void __init mem_init(void)
-{
- phys_addr_t memory_start = memblock_start_of_DRAM();
- BUG_ON(!mem_map);
- set_max_mapnr_init();
-
- free_highmem();
-
- /* this will put all low memory onto the freelists */
- memblock_free_all();
-
- pr_info("virtual kernel memory layout:\n"
- " fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n"
-#ifdef CONFIG_HIGHMEM
- " pkmap : 0x%08lx - 0x%08lx (%4ld kB)\n"
-#endif
- " consist : 0x%08lx - 0x%08lx (%4ld MB)\n"
- " vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n"
- " lowmem : 0x%08lx - 0x%08lx (%4ld MB)\n"
- " .init : 0x%08lx - 0x%08lx (%4ld kB)\n"
- " .data : 0x%08lx - 0x%08lx (%4ld kB)\n"
- " .text : 0x%08lx - 0x%08lx (%4ld kB)\n",
- FIXADDR_START, FIXADDR_TOP, (FIXADDR_TOP - FIXADDR_START) >> 10,
-#ifdef CONFIG_HIGHMEM
- PKMAP_BASE, PKMAP_BASE + LAST_PKMAP * PAGE_SIZE,
- (LAST_PKMAP * PAGE_SIZE) >> 10,
-#endif
- CONSISTENT_BASE, CONSISTENT_END,
- ((CONSISTENT_END) - (CONSISTENT_BASE)) >> 20, VMALLOC_START,
- (unsigned long)VMALLOC_END, (VMALLOC_END - VMALLOC_START) >> 20,
- (unsigned long)__va(memory_start), (unsigned long)high_memory,
- ((unsigned long)high_memory -
- (unsigned long)__va(memory_start)) >> 20,
- (unsigned long)&__init_begin, (unsigned long)&__init_end,
- ((unsigned long)&__init_end -
- (unsigned long)&__init_begin) >> 10, (unsigned long)&_etext,
- (unsigned long)&_edata,
- ((unsigned long)&_edata - (unsigned long)&_etext) >> 10,
- (unsigned long)&_text, (unsigned long)&_etext,
- ((unsigned long)&_etext - (unsigned long)&_text) >> 10);
-
- /*
- * Check boundaries twice: Some fundamental inconsistencies can
- * be detected at build time already.
- */
-#ifdef CONFIG_HIGHMEM
- BUILD_BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > FIXADDR_START);
- BUILD_BUG_ON((CONSISTENT_END) > PKMAP_BASE);
-#endif
- BUILD_BUG_ON(VMALLOC_END > CONSISTENT_BASE);
- BUILD_BUG_ON(VMALLOC_START >= VMALLOC_END);
-
-#ifdef CONFIG_HIGHMEM
- BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > FIXADDR_START);
- BUG_ON(CONSISTENT_END > PKMAP_BASE);
-#endif
- BUG_ON(VMALLOC_END > CONSISTENT_BASE);
- BUG_ON(VMALLOC_START >= VMALLOC_END);
- BUG_ON((unsigned long)high_memory > VMALLOC_START);
-
- return;
-}
-
-void __set_fixmap(enum fixed_addresses idx,
- phys_addr_t phys, pgprot_t flags)
-{
- unsigned long addr = __fix_to_virt(idx);
- pte_t *pte;
-
- BUG_ON(idx <= FIX_HOLE || idx >= __end_of_fixed_addresses);
-
- pte = (pte_t *)&fixmap_pmd_p[pte_index(addr)];
-
- if (pgprot_val(flags)) {
- set_pte(pte, pfn_pte(phys >> PAGE_SHIFT, flags));
- } else {
- pte_clear(&init_mm, addr, pte);
- flush_tlb_kernel_range(addr, addr + PAGE_SIZE);
- }
-}
diff --git a/arch/nds32/mm/mm-nds32.c b/arch/nds32/mm/mm-nds32.c
deleted file mode 100644
index f2778f2b39f6..000000000000
--- a/arch/nds32/mm/mm-nds32.c
+++ /dev/null
@@ -1,96 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/init_task.h>
-
-#define __HAVE_ARCH_PGD_FREE
-#include <asm/pgalloc.h>
-
-#define FIRST_KERNEL_PGD_NR (USER_PTRS_PER_PGD)
-
-/*
- * need to get a page for level 1
- */
-
-pgd_t *pgd_alloc(struct mm_struct *mm)
-{
- pgd_t *new_pgd, *init_pgd;
- int i;
-
- new_pgd = (pgd_t *) __get_free_pages(GFP_KERNEL, 0);
- if (!new_pgd)
- return NULL;
- for (i = 0; i < PTRS_PER_PGD; i++) {
- (*new_pgd) = 1;
- new_pgd++;
- }
- new_pgd -= PTRS_PER_PGD;
-
- init_pgd = pgd_offset_k(0);
-
- memcpy(new_pgd + FIRST_KERNEL_PGD_NR, init_pgd + FIRST_KERNEL_PGD_NR,
- (PTRS_PER_PGD - FIRST_KERNEL_PGD_NR) * sizeof(pgd_t));
-
- cpu_dcache_wb_range((unsigned long)new_pgd,
- (unsigned long)new_pgd +
- PTRS_PER_PGD * sizeof(pgd_t));
- inc_lruvec_page_state(virt_to_page((unsigned long *)new_pgd),
- NR_PAGETABLE);
-
- return new_pgd;
-}
-
-void pgd_free(struct mm_struct *mm, pgd_t * pgd)
-{
- pmd_t *pmd;
- struct page *pte;
-
- if (!pgd)
- return;
-
- pmd = (pmd_t *) pgd;
- if (pmd_none(*pmd))
- goto free;
- if (pmd_bad(*pmd)) {
- pmd_ERROR(*pmd);
- pmd_clear(pmd);
- goto free;
- }
-
- pte = pmd_page(*pmd);
- pmd_clear(pmd);
- dec_lruvec_page_state(virt_to_page((unsigned long *)pgd), NR_PAGETABLE);
- pte_free(mm, pte);
- mm_dec_nr_ptes(mm);
- pmd_free(mm, pmd);
-free:
- free_pages((unsigned long)pgd, 0);
-}
-
-/*
- * In order to soft-boot, we need to insert a 1:1 mapping in place of
- * the user-mode pages. This will then ensure that we have predictable
- * results when turning the mmu off
- */
-void setup_mm_for_reboot(char mode)
-{
- unsigned long pmdval;
- pgd_t *pgd;
- p4d_t *p4d;
- pud_t *pud;
- pmd_t *pmd;
- int i;
-
- if (current->mm && current->mm->pgd)
- pgd = current->mm->pgd;
- else
- pgd = init_mm.pgd;
-
- for (i = 0; i < USER_PTRS_PER_PGD; i++) {
- pmdval = (i << PGDIR_SHIFT);
- p4d = p4d_offset(pgd, i << PGDIR_SHIFT);
- pud = pud_offset(p4d, i << PGDIR_SHIFT);
- pmd = pmd_offset(pud + i, i << PGDIR_SHIFT);
- set_pmd(pmd, __pmd(pmdval));
- }
-}
diff --git a/arch/nds32/mm/mmap.c b/arch/nds32/mm/mmap.c
deleted file mode 100644
index 1bdf5e7d1b43..000000000000
--- a/arch/nds32/mm/mmap.c
+++ /dev/null
@@ -1,73 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/sched.h>
-#include <linux/mman.h>
-#include <linux/shm.h>
-
-#define COLOUR_ALIGN(addr,pgoff) \
- ((((addr)+SHMLBA-1)&~(SHMLBA-1)) + \
- (((pgoff)<<PAGE_SHIFT) & (SHMLBA-1)))
-
-/*
- * We need to ensure that shared mappings are correctly aligned to
- * avoid aliasing issues with VIPT caches. We need to ensure that
- * a specific page of an object is always mapped at a multiple of
- * SHMLBA bytes.
- *
- * We unconditionally provide this function for all cases, however
- * in the VIVT case, we optimise out the alignment rules.
- */
-unsigned long
-arch_get_unmapped_area(struct file *filp, unsigned long addr,
- unsigned long len, unsigned long pgoff,
- unsigned long flags)
-{
- struct mm_struct *mm = current->mm;
- struct vm_area_struct *vma;
- int do_align = 0;
- struct vm_unmapped_area_info info;
- int aliasing = 0;
- if(IS_ENABLED(CONFIG_CPU_CACHE_ALIASING))
- aliasing = 1;
-
- /*
- * We only need to do colour alignment if either the I or D
- * caches alias.
- */
- if (aliasing)
- do_align = filp || (flags & MAP_SHARED);
-
- /*
- * We enforce the MAP_FIXED case.
- */
- if (flags & MAP_FIXED) {
- if (aliasing && flags & MAP_SHARED &&
- (addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))
- return -EINVAL;
- return addr;
- }
-
- if (len > TASK_SIZE)
- return -ENOMEM;
-
- if (addr) {
- if (do_align)
- addr = COLOUR_ALIGN(addr, pgoff);
- else
- addr = PAGE_ALIGN(addr);
-
- vma = find_vma(mm, addr);
- if (TASK_SIZE - len >= addr &&
- (!vma || addr + len <= vm_start_gap(vma)))
- return addr;
- }
-
- info.flags = 0;
- info.length = len;
- info.low_limit = mm->mmap_base;
- info.high_limit = TASK_SIZE;
- info.align_mask = do_align ? (PAGE_MASK & (SHMLBA - 1)) : 0;
- info.align_offset = pgoff << PAGE_SHIFT;
- return vm_unmapped_area(&info);
-}
diff --git a/arch/nds32/mm/proc.c b/arch/nds32/mm/proc.c
deleted file mode 100644
index 848c845f5f33..000000000000
--- a/arch/nds32/mm/proc.c
+++ /dev/null
@@ -1,536 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <asm/nds32.h>
-#include <asm/tlbflush.h>
-#include <asm/cacheflush.h>
-#include <asm/l2_cache.h>
-#include <nds32_intrinsic.h>
-
-#include <asm/cache_info.h>
-extern struct cache_info L1_cache_info[2];
-
-int va_kernel_present(unsigned long addr)
-{
- pmd_t *pmd;
- pte_t *ptep, pte;
-
- pmd = pmd_off_k(addr);
- if (!pmd_none(*pmd)) {
- ptep = pte_offset_map(pmd, addr);
- pte = *ptep;
- if (pte_present(pte))
- return pte;
- }
- return 0;
-}
-
-pte_t va_present(struct mm_struct * mm, unsigned long addr)
-{
- pgd_t *pgd;
- p4d_t *p4d;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *ptep, pte;
-
- pgd = pgd_offset(mm, addr);
- if (!pgd_none(*pgd)) {
- p4d = p4d_offset(pgd, addr);
- if (!p4d_none(*p4d)) {
- pud = pud_offset(p4d, addr);
- if (!pud_none(*pud)) {
- pmd = pmd_offset(pud, addr);
- if (!pmd_none(*pmd)) {
- ptep = pte_offset_map(pmd, addr);
- pte = *ptep;
- if (pte_present(pte))
- return pte;
- }
- }
- }
- }
- return 0;
-
-}
-
-int va_readable(struct pt_regs *regs, unsigned long addr)
-{
- struct mm_struct *mm = current->mm;
- pte_t pte;
- int ret = 0;
-
- if (user_mode(regs)) {
- /* user mode */
- pte = va_present(mm, addr);
- if (!pte && pte_read(pte))
- ret = 1;
- } else {
- /* superuser mode is always readable, so we can only
- * check it is present or not*/
- return (! !va_kernel_present(addr));
- }
- return ret;
-}
-
-int va_writable(struct pt_regs *regs, unsigned long addr)
-{
- struct mm_struct *mm = current->mm;
- pte_t pte;
- int ret = 0;
-
- if (user_mode(regs)) {
- /* user mode */
- pte = va_present(mm, addr);
- if (!pte && pte_write(pte))
- ret = 1;
- } else {
- /* superuser mode */
- pte = va_kernel_present(addr);
- if (!pte && pte_kernel_write(pte))
- ret = 1;
- }
- return ret;
-}
-
-/*
- * All
- */
-void cpu_icache_inval_all(void)
-{
- unsigned long end, line_size;
-
- line_size = L1_cache_info[ICACHE].line_size;
- end =
- line_size * L1_cache_info[ICACHE].ways * L1_cache_info[ICACHE].sets;
-
- do {
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1I_IX_INVAL"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1I_IX_INVAL"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1I_IX_INVAL"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1I_IX_INVAL"::"r" (end));
- } while (end > 0);
- __nds32__isb();
-}
-
-void cpu_dcache_inval_all(void)
-{
- __nds32__cctl_l1d_invalall();
-}
-
-#ifdef CONFIG_CACHE_L2
-void dcache_wb_all_level(void)
-{
- unsigned long flags, cmd;
- local_irq_save(flags);
- __nds32__cctl_l1d_wball_alvl();
- /* Section 1: Ensure the section 2 & 3 program code execution after */
- __nds32__cctlidx_read(NDS32_CCTL_L1D_IX_RWD,0);
-
- /* Section 2: Confirm the writeback all level is done in CPU and L2C */
- cmd = CCTL_CMD_L2_SYNC;
- L2_CMD_RDY();
- L2C_W_REG(L2_CCTL_CMD_OFF, cmd);
- L2_CMD_RDY();
-
- /* Section 3: Writeback whole L2 cache */
- cmd = CCTL_ALL_CMD | CCTL_CMD_L2_IX_WB;
- L2_CMD_RDY();
- L2C_W_REG(L2_CCTL_CMD_OFF, cmd);
- L2_CMD_RDY();
- __nds32__msync_all();
- local_irq_restore(flags);
-}
-EXPORT_SYMBOL(dcache_wb_all_level);
-#endif
-
-void cpu_dcache_wb_all(void)
-{
- __nds32__cctl_l1d_wball_one_lvl();
- __nds32__cctlidx_read(NDS32_CCTL_L1D_IX_RWD,0);
-}
-
-void cpu_dcache_wbinval_all(void)
-{
-#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
- unsigned long flags;
- local_irq_save(flags);
-#endif
- cpu_dcache_wb_all();
- cpu_dcache_inval_all();
-#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
- local_irq_restore(flags);
-#endif
-}
-
-/*
- * Page
- */
-void cpu_icache_inval_page(unsigned long start)
-{
- unsigned long line_size, end;
-
- line_size = L1_cache_info[ICACHE].line_size;
- end = start + PAGE_SIZE;
-
- do {
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1I_VA_INVAL"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1I_VA_INVAL"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1I_VA_INVAL"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1I_VA_INVAL"::"r" (end));
- } while (end != start);
- __nds32__isb();
-}
-
-void cpu_dcache_inval_page(unsigned long start)
-{
- unsigned long line_size, end;
-
- line_size = L1_cache_info[DCACHE].line_size;
- end = start + PAGE_SIZE;
-
- do {
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1D_VA_INVAL"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1D_VA_INVAL"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1D_VA_INVAL"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1D_VA_INVAL"::"r" (end));
- } while (end != start);
-}
-
-void cpu_dcache_wb_page(unsigned long start)
-{
-#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
- unsigned long line_size, end;
-
- line_size = L1_cache_info[DCACHE].line_size;
- end = start + PAGE_SIZE;
-
- do {
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (end));
- end -= line_size;
- __asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (end));
- } while (end != start);
- __nds32__cctlidx_read(NDS32_CCTL_L1D_IX_RWD,0);
-#endif
-}
-
-void cpu_dcache_wbinval_page(unsigned long start)
-{
- unsigned long line_size, end;
-
- line_size = L1_cache_info[DCACHE].line_size;
- end = start + PAGE_SIZE;
-
- do {
- end -= line_size;
-#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
- __asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (end));
-#endif
- __asm__ volatile ("\n\tcctl %0, L1D_VA_INVAL"::"r" (end));
- end -= line_size;
-#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
- __asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (end));
-#endif
- __asm__ volatile ("\n\tcctl %0, L1D_VA_INVAL"::"r" (end));
- end -= line_size;
-#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
- __asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (end));
-#endif
- __asm__ volatile ("\n\tcctl %0, L1D_VA_INVAL"::"r" (end));
- end -= line_size;
-#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
- __asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (end));
-#endif
- __asm__ volatile ("\n\tcctl %0, L1D_VA_INVAL"::"r" (end));
- } while (end != start);
- __nds32__cctlidx_read(NDS32_CCTL_L1D_IX_RWD,0);
-}
-
-void cpu_cache_wbinval_page(unsigned long page, int flushi)
-{
- cpu_dcache_wbinval_page(page);
- if (flushi)
- cpu_icache_inval_page(page);
-}
-
-/*
- * Range
- */
-void cpu_icache_inval_range(unsigned long start, unsigned long end)
-{
- unsigned long line_size;
-
- line_size = L1_cache_info[ICACHE].line_size;
-
- while (end > start) {
- __asm__ volatile ("\n\tcctl %0, L1I_VA_INVAL"::"r" (start));
- start += line_size;
- }
- __nds32__isb();
-}
-
-void cpu_dcache_inval_range(unsigned long start, unsigned long end)
-{
- unsigned long line_size;
-
- line_size = L1_cache_info[DCACHE].line_size;
-
- while (end > start) {
- __asm__ volatile ("\n\tcctl %0, L1D_VA_INVAL"::"r" (start));
- start += line_size;
- }
-}
-
-void cpu_dcache_wb_range(unsigned long start, unsigned long end)
-{
-#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
- unsigned long line_size;
-
- line_size = L1_cache_info[DCACHE].line_size;
-
- while (end > start) {
- __asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (start));
- start += line_size;
- }
- __nds32__cctlidx_read(NDS32_CCTL_L1D_IX_RWD,0);
-#endif
-}
-
-void cpu_dcache_wbinval_range(unsigned long start, unsigned long end)
-{
- unsigned long line_size;
-
- line_size = L1_cache_info[DCACHE].line_size;
-
- while (end > start) {
-#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
- __asm__ volatile ("\n\tcctl %0, L1D_VA_WB"::"r" (start));
-#endif
- __asm__ volatile ("\n\tcctl %0, L1D_VA_INVAL"::"r" (start));
- start += line_size;
- }
- __nds32__cctlidx_read(NDS32_CCTL_L1D_IX_RWD,0);
-}
-
-void cpu_cache_wbinval_range(unsigned long start, unsigned long end, int flushi)
-{
- unsigned long line_size, align_start, align_end;
-
- line_size = L1_cache_info[DCACHE].line_size;
- align_start = start & ~(line_size - 1);
- align_end = (end + line_size - 1) & ~(line_size - 1);
- cpu_dcache_wbinval_range(align_start, align_end);
-
- if (flushi) {
- line_size = L1_cache_info[ICACHE].line_size;
- align_start = start & ~(line_size - 1);
- align_end = (end + line_size - 1) & ~(line_size - 1);
- cpu_icache_inval_range(align_start, align_end);
- }
-}
-
-void cpu_cache_wbinval_range_check(struct vm_area_struct *vma,
- unsigned long start, unsigned long end,
- bool flushi, bool wbd)
-{
- unsigned long line_size, t_start, t_end;
-
- if (!flushi && !wbd)
- return;
- line_size = L1_cache_info[DCACHE].line_size;
- start = start & ~(line_size - 1);
- end = (end + line_size - 1) & ~(line_size - 1);
-
- if ((end - start) > (8 * PAGE_SIZE)) {
- if (wbd)
- cpu_dcache_wbinval_all();
- if (flushi)
- cpu_icache_inval_all();
- return;
- }
-
- t_start = (start + PAGE_SIZE) & PAGE_MASK;
- t_end = ((end - 1) & PAGE_MASK);
-
- if ((start & PAGE_MASK) == t_end) {
- if (va_present(vma->vm_mm, start)) {
- if (wbd)
- cpu_dcache_wbinval_range(start, end);
- if (flushi)
- cpu_icache_inval_range(start, end);
- }
- return;
- }
-
- if (va_present(vma->vm_mm, start)) {
- if (wbd)
- cpu_dcache_wbinval_range(start, t_start);
- if (flushi)
- cpu_icache_inval_range(start, t_start);
- }
-
- if (va_present(vma->vm_mm, end - 1)) {
- if (wbd)
- cpu_dcache_wbinval_range(t_end, end);
- if (flushi)
- cpu_icache_inval_range(t_end, end);
- }
-
- while (t_start < t_end) {
- if (va_present(vma->vm_mm, t_start)) {
- if (wbd)
- cpu_dcache_wbinval_page(t_start);
- if (flushi)
- cpu_icache_inval_page(t_start);
- }
- t_start += PAGE_SIZE;
- }
-}
-
-#ifdef CONFIG_CACHE_L2
-static inline void cpu_l2cache_op(unsigned long start, unsigned long end, unsigned long op)
-{
- if (atl2c_base) {
- unsigned long p_start = __pa(start);
- unsigned long p_end = __pa(end);
- unsigned long cmd;
- unsigned long line_size;
- /* TODO Can Use PAGE Mode to optimize if range large than PAGE_SIZE */
- line_size = L2_CACHE_LINE_SIZE();
- p_start = p_start & (~(line_size - 1));
- p_end = (p_end + line_size - 1) & (~(line_size - 1));
- cmd =
- (p_start & ~(line_size - 1)) | op |
- CCTL_SINGLE_CMD;
- do {
- L2_CMD_RDY();
- L2C_W_REG(L2_CCTL_CMD_OFF, cmd);
- cmd += line_size;
- p_start += line_size;
- } while (p_end > p_start);
- cmd = CCTL_CMD_L2_SYNC;
- L2_CMD_RDY();
- L2C_W_REG(L2_CCTL_CMD_OFF, cmd);
- L2_CMD_RDY();
- }
-}
-#else
-#define cpu_l2cache_op(start,end,op) do { } while (0)
-#endif
-/*
- * DMA
- */
-void cpu_dma_wb_range(unsigned long start, unsigned long end)
-{
- unsigned long line_size;
- unsigned long flags;
- line_size = L1_cache_info[DCACHE].line_size;
- start = start & (~(line_size - 1));
- end = (end + line_size - 1) & (~(line_size - 1));
- if (unlikely(start == end))
- return;
-
- local_irq_save(flags);
- cpu_dcache_wb_range(start, end);
- cpu_l2cache_op(start, end, CCTL_CMD_L2_PA_WB);
- __nds32__msync_all();
- local_irq_restore(flags);
-}
-
-void cpu_dma_inval_range(unsigned long start, unsigned long end)
-{
- unsigned long line_size;
- unsigned long old_start = start;
- unsigned long old_end = end;
- unsigned long flags;
- line_size = L1_cache_info[DCACHE].line_size;
- start = start & (~(line_size - 1));
- end = (end + line_size - 1) & (~(line_size - 1));
- if (unlikely(start == end))
- return;
- local_irq_save(flags);
- if (start != old_start) {
- cpu_dcache_wbinval_range(start, start + line_size);
- cpu_l2cache_op(start, start + line_size, CCTL_CMD_L2_PA_WBINVAL);
- }
- if (end != old_end) {
- cpu_dcache_wbinval_range(end - line_size, end);
- cpu_l2cache_op(end - line_size, end, CCTL_CMD_L2_PA_WBINVAL);
- }
- cpu_dcache_inval_range(start, end);
- cpu_l2cache_op(start, end, CCTL_CMD_L2_PA_INVAL);
- __nds32__msync_all();
- local_irq_restore(flags);
-
-}
-
-void cpu_dma_wbinval_range(unsigned long start, unsigned long end)
-{
- unsigned long line_size;
- unsigned long flags;
- line_size = L1_cache_info[DCACHE].line_size;
- start = start & (~(line_size - 1));
- end = (end + line_size - 1) & (~(line_size - 1));
- if (unlikely(start == end))
- return;
-
- local_irq_save(flags);
- cpu_dcache_wbinval_range(start, end);
- cpu_l2cache_op(start, end, CCTL_CMD_L2_PA_WBINVAL);
- __nds32__msync_all();
- local_irq_restore(flags);
-}
-
-void cpu_proc_init(void)
-{
-}
-
-void cpu_proc_fin(void)
-{
-}
-
-void cpu_do_idle(void)
-{
- __nds32__standby_no_wake_grant();
-}
-
-void cpu_reset(unsigned long reset)
-{
- u32 tmp;
- GIE_DISABLE();
- tmp = __nds32__mfsr(NDS32_SR_CACHE_CTL);
- tmp &= ~(CACHE_CTL_mskIC_EN | CACHE_CTL_mskDC_EN);
- __nds32__mtsr_isb(tmp, NDS32_SR_CACHE_CTL);
- cpu_dcache_wbinval_all();
- cpu_icache_inval_all();
-
- __asm__ __volatile__("jr.toff %0\n\t"::"r"(reset));
-}
-
-void cpu_switch_mm(struct mm_struct *mm)
-{
- unsigned long cid;
- cid = __nds32__mfsr(NDS32_SR_TLB_MISC);
- cid = (cid & ~TLB_MISC_mskCID) | mm->context.id;
- __nds32__mtsr_dsb(cid, NDS32_SR_TLB_MISC);
- __nds32__mtsr_isb(__pa(mm->pgd), NDS32_SR_L1_PPTB);
-}
diff --git a/arch/nds32/mm/tlb.c b/arch/nds32/mm/tlb.c
deleted file mode 100644
index dd41f5e0712f..000000000000
--- a/arch/nds32/mm/tlb.c
+++ /dev/null
@@ -1,50 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/spinlock_types.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <asm/nds32.h>
-#include <nds32_intrinsic.h>
-
-unsigned int cpu_last_cid = { TLB_MISC_mskCID + (2 << TLB_MISC_offCID) };
-
-DEFINE_SPINLOCK(cid_lock);
-
-void local_flush_tlb_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
- unsigned long flags, ocid, ncid;
-
- if ((end - start) > 0x400000) {
- __nds32__tlbop_flua();
- __nds32__isb();
- return;
- }
-
- spin_lock_irqsave(&cid_lock, flags);
- ocid = __nds32__mfsr(NDS32_SR_TLB_MISC);
- ncid = (ocid & ~TLB_MISC_mskCID) | vma->vm_mm->context.id;
- __nds32__mtsr_dsb(ncid, NDS32_SR_TLB_MISC);
- while (start < end) {
- __nds32__tlbop_inv(start);
- __nds32__isb();
- start += PAGE_SIZE;
- }
- __nds32__mtsr_dsb(ocid, NDS32_SR_TLB_MISC);
- spin_unlock_irqrestore(&cid_lock, flags);
-}
-
-void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
-{
- unsigned long flags, ocid, ncid;
-
- spin_lock_irqsave(&cid_lock, flags);
- ocid = __nds32__mfsr(NDS32_SR_TLB_MISC);
- ncid = (ocid & ~TLB_MISC_mskCID) | vma->vm_mm->context.id;
- __nds32__mtsr_dsb(ncid, NDS32_SR_TLB_MISC);
- __nds32__tlbop_inv(addr);
- __nds32__isb();
- __nds32__mtsr_dsb(ocid, NDS32_SR_TLB_MISC);
- spin_unlock_irqrestore(&cid_lock, flags);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-11 15:20:57 +0000