sh64: Fixup the nommu build.
[linux-2.6.git] / include / asm-sh / tlb_64.h
1 /*
2  * include/asm-sh/tlb_64.h
3  *
4  * Copyright (C) 2003  Paul Mundt
5  *
6  * This file is subject to the terms and conditions of the GNU General Public
7  * License.  See the file "COPYING" in the main directory of this archive
8  * for more details.
9  */
10 #ifndef __ASM_SH_TLB_64_H
11 #define __ASM_SH_TLB_64_H
12
13 /* ITLB defines */
14 #define ITLB_FIXED      0x00000000      /* First fixed ITLB, see head.S */
15 #define ITLB_LAST_VAR_UNRESTRICTED      0x000003F0      /* Last ITLB */
16
17 /* DTLB defines */
18 #define DTLB_FIXED      0x00800000      /* First fixed DTLB, see head.S */
19 #define DTLB_LAST_VAR_UNRESTRICTED      0x008003F0      /* Last DTLB */
20
21 #ifndef __ASSEMBLY__
22
23 /**
24  * for_each_dtlb_entry
25  *
26  * @tlb:        TLB entry
27  *
28  * Iterate over free (non-wired) DTLB entries
29  */
30 #define for_each_dtlb_entry(tlb)                \
31         for (tlb  = cpu_data->dtlb.first;       \
32              tlb <= cpu_data->dtlb.last;        \
33              tlb += cpu_data->dtlb.step)
34
35 /**
36  * for_each_itlb_entry
37  *
38  * @tlb:        TLB entry
39  *
40  * Iterate over free (non-wired) ITLB entries
41  */
42 #define for_each_itlb_entry(tlb)                \
43         for (tlb  = cpu_data->itlb.first;       \
44              tlb <= cpu_data->itlb.last;        \
45              tlb += cpu_data->itlb.step)
46
47 /**
48  * __flush_tlb_slot
49  *
50  * @slot:       Address of TLB slot.
51  *
52  * Flushes TLB slot @slot.
53  */
54 static inline void __flush_tlb_slot(unsigned long long slot)
55 {
56         __asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot));
57 }
58
59 #ifdef CONFIG_MMU
60 /* arch/sh64/mm/tlb.c */
61 int sh64_tlb_init(void);
62 unsigned long long sh64_next_free_dtlb_entry(void);
63 unsigned long long sh64_get_wired_dtlb_entry(void);
64 int sh64_put_wired_dtlb_entry(unsigned long long entry);
65 void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr,
66                          unsigned long asid, unsigned long paddr);
67 void sh64_teardown_tlb_slot(unsigned long long config_addr);
68 #else
69 #define sh64_tlb_init()                                 do { } while (0)
70 #define sh64_next_free_dtlb_entry()                     (0)
71 #define sh64_get_wired_dtlb_entry()                     (0)
72 #define sh64_put_wired_dtlb_entry(entry)                do { } while (0)
73 #define sh64_setup_tlb_slot(conf, virt, asid, phys)     do { } while (0)
74 #define sh64_teardown_tlb_slot(addr)                    do { } while (0)
75 #endif /* CONFIG_MMU */
76 #endif /* __ASSEMBLY__ */
77 #endif /* __ASM_SH_TLB_64_H */