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Diffstat (limited to 'arch/sh/include/asm/tlb_64.h')
-rw-r--r-- | arch/sh/include/asm/tlb_64.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/sh/include/asm/tlb_64.h b/arch/sh/include/asm/tlb_64.h new file mode 100644 index 000000000..ef0ae2a28 --- /dev/null +++ b/arch/sh/include/asm/tlb_64.h @@ -0,0 +1,71 @@ +/* + * include/asm-sh/tlb_64.h + * + * Copyright (C) 2003 Paul Mundt + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#ifndef __ASM_SH_TLB_64_H +#define __ASM_SH_TLB_64_H + +/* ITLB defines */ +#define ITLB_FIXED 0x00000000 /* First fixed ITLB, see head.S */ +#define ITLB_LAST_VAR_UNRESTRICTED 0x000003F0 /* Last ITLB */ + +/* DTLB defines */ +#define DTLB_FIXED 0x00800000 /* First fixed DTLB, see head.S */ +#define DTLB_LAST_VAR_UNRESTRICTED 0x008003F0 /* Last DTLB */ + +#ifndef __ASSEMBLY__ + +/** + * for_each_dtlb_entry - Iterate over free (non-wired) DTLB entries + * + * @tlb: TLB entry + */ +#define for_each_dtlb_entry(tlb) \ + for (tlb = cpu_data->dtlb.first; \ + tlb <= cpu_data->dtlb.last; \ + tlb += cpu_data->dtlb.step) + +/** + * for_each_itlb_entry - Iterate over free (non-wired) ITLB entries + * + * @tlb: TLB entry + */ +#define for_each_itlb_entry(tlb) \ + for (tlb = cpu_data->itlb.first; \ + tlb <= cpu_data->itlb.last; \ + tlb += cpu_data->itlb.step) + +/** + * __flush_tlb_slot - Flushes TLB slot @slot. + * + * @slot: Address of TLB slot. + */ +static inline void __flush_tlb_slot(unsigned long long slot) +{ + __asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot)); +} + +#ifdef CONFIG_MMU +/* arch/sh64/mm/tlb.c */ +int sh64_tlb_init(void); +unsigned long long sh64_next_free_dtlb_entry(void); +unsigned long long sh64_get_wired_dtlb_entry(void); +int sh64_put_wired_dtlb_entry(unsigned long long entry); +void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr, + unsigned long asid, unsigned long paddr); +void sh64_teardown_tlb_slot(unsigned long long config_addr); +#else +#define sh64_tlb_init() do { } while (0) +#define sh64_next_free_dtlb_entry() (0) +#define sh64_get_wired_dtlb_entry() (0) +#define sh64_put_wired_dtlb_entry(entry) do { } while (0) +#define sh64_setup_tlb_slot(conf, virt, asid, phys) do { } while (0) +#define sh64_teardown_tlb_slot(addr) do { } while (0) +#endif /* CONFIG_MMU */ +#endif /* __ASSEMBLY__ */ +#endif /* __ASM_SH_TLB_64_H */ |