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authorCatalin Marinas <catalin.marinas@arm.com>2012-03-05 06:49:34 -0500
committerCatalin Marinas <catalin.marinas@arm.com>2012-09-17 08:42:21 -0400
commit10b663aef1c24794d32141be86b4dfcc64293bd0 (patch)
tree88fb77820de4953ab8cdd58c3992e71be4ac8552
parent985c0679dfa459a1deed31b999b26e4420786874 (diff)
arm64: Miscellaneous header files
This patch introduces a few AArch64-specific header files together with Kbuild entries for generic headers. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat
-rw-r--r--arch/arm64/include/asm/Kbuild51
-rw-r--r--arch/arm64/include/asm/barrier.h52
-rw-r--r--arch/arm64/include/asm/bitsperlong.h23
-rw-r--r--arch/arm64/include/asm/byteorder.h21
-rw-r--r--arch/arm64/include/asm/cmpxchg.h173
-rw-r--r--arch/arm64/include/asm/compiler.h30
-rw-r--r--arch/arm64/include/asm/exception.h23
-rw-r--r--arch/arm64/include/asm/exec.h23
-rw-r--r--arch/arm64/include/asm/fcntl.h29
-rw-r--r--arch/arm64/include/asm/system_misc.h54
10 files changed, 479 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/Kbuild b/arch/arm64/include/asm/Kbuild
new file mode 100644
index 000000000000..35924a542d43
--- /dev/null
+++ b/arch/arm64/include/asm/Kbuild
@@ -0,0 +1,51 @@
1include include/asm-generic/Kbuild.asm
2
3header-y += hwcap.h
4
5generic-y += bug.h
6generic-y += bugs.h
7generic-y += checksum.h
8generic-y += cputime.h
9generic-y += current.h
10generic-y += delay.h
11generic-y += div64.h
12generic-y += dma.h
13generic-y += emergency-restart.h
14generic-y += errno.h
15generic-y += ftrace.h
16generic-y += hw_irq.h
17generic-y += ioctl.h
18generic-y += ioctls.h
19generic-y += ipcbuf.h
20generic-y += irq_regs.h
21generic-y += kdebug.h
22generic-y += kmap_types.h
23generic-y += linkage.h
24generic-y += local.h
25generic-y += local64.h
26generic-y += mman.h
27generic-y += msgbuf.h
28generic-y += mutex.h
29generic-y += pci.h
30generic-y += percpu.h
31generic-y += poll.h
32generic-y += posix_types.h
33generic-y += resource.h
34generic-y += scatterlist.h
35generic-y += sections.h
36generic-y += segment.h
37generic-y += sembuf.h
38generic-y += serial.h
39generic-y += shmbuf.h
40generic-y += sizes.h
41generic-y += socket.h
42generic-y += sockios.h
43generic-y += string.h
44generic-y += switch_to.h
45generic-y += swab.h
46generic-y += termbits.h
47generic-y += termios.h
48generic-y += topology.h
49generic-y += types.h
50generic-y += unaligned.h
51generic-y += user.h
diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h
new file mode 100644
index 000000000000..d4a63338a53c
--- /dev/null
+++ b/arch/arm64/include/asm/barrier.h
@@ -0,0 +1,52 @@
1/*
2 * Based on arch/arm/include/asm/barrier.h
3 *
4 * Copyright (C) 2012 ARM Ltd.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18#ifndef __ASM_BARRIER_H
19#define __ASM_BARRIER_H
20
21#ifndef __ASSEMBLY__
22
23#define sev() asm volatile("sev" : : : "memory")
24#define wfe() asm volatile("wfe" : : : "memory")
25#define wfi() asm volatile("wfi" : : : "memory")
26
27#define isb() asm volatile("isb" : : : "memory")
28#define dsb() asm volatile("dsb sy" : : : "memory")
29
30#define mb() dsb()
31#define rmb() asm volatile("dsb ld" : : : "memory")
32#define wmb() asm volatile("dsb st" : : : "memory")
33
34#ifndef CONFIG_SMP
35#define smp_mb() barrier()
36#define smp_rmb() barrier()
37#define smp_wmb() barrier()
38#else
39#define smp_mb() asm volatile("dmb ish" : : : "memory")
40#define smp_rmb() asm volatile("dmb ishld" : : : "memory")
41#define smp_wmb() asm volatile("dmb ishst" : : : "memory")
42#endif
43
44#define read_barrier_depends() do { } while(0)
45#define smp_read_barrier_depends() do { } while(0)
46
47#define set_mb(var, value) do { var = value; smp_mb(); } while (0)
48#define nop() asm volatile("nop");
49
50#endif /* __ASSEMBLY__ */
51
52#endif /* __ASM_BARRIER_H */
diff --git a/arch/arm64/include/asm/bitsperlong.h b/arch/arm64/include/asm/bitsperlong.h
new file mode 100644
index 000000000000..fce9c2924fa3
--- /dev/null
+++ b/arch/arm64/include/asm/bitsperlong.h
@@ -0,0 +1,23 @@
1/*
2 * Copyright (C) 2012 ARM Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16#ifndef __ASM_BITSPERLONG_H
17#define __ASM_BITSPERLONG_H
18
19#define __BITS_PER_LONG 64
20
21#include <asm-generic/bitsperlong.h>
22
23#endif /* __ASM_BITSPERLONG_H */
diff --git a/arch/arm64/include/asm/byteorder.h b/arch/arm64/include/asm/byteorder.h
new file mode 100644
index 000000000000..2b92046aafc5
--- /dev/null
+++ b/arch/arm64/include/asm/byteorder.h
@@ -0,0 +1,21 @@
1/*
2 * Copyright (C) 2012 ARM Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16#ifndef __ASM_BYTEORDER_H
17#define __ASM_BYTEORDER_H
18
19#include <linux/byteorder/little_endian.h>
20
21#endif /* __ASM_BYTEORDER_H */
diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h
new file mode 100644
index 000000000000..e0e65b069d9e
--- /dev/null
+++ b/arch/arm64/include/asm/cmpxchg.h
@@ -0,0 +1,173 @@
1/*
2 * Based on arch/arm/include/asm/cmpxchg.h
3 *
4 * Copyright (C) 2012 ARM Ltd.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18#ifndef __ASM_CMPXCHG_H
19#define __ASM_CMPXCHG_H
20
21#include <linux/bug.h>
22
23#include <asm/barrier.h>
24
25static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size)
26{
27 unsigned long ret, tmp;
28
29 switch (size) {
30 case 1:
31 asm volatile("// __xchg1\n"
32 "1: ldaxrb %w0, [%3]\n"
33 " stlxrb %w1, %w2, [%3]\n"
34 " cbnz %w1, 1b\n"
35 : "=&r" (ret), "=&r" (tmp)
36 : "r" (x), "r" (ptr)
37 : "memory", "cc");
38 break;
39 case 2:
40 asm volatile("// __xchg2\n"
41 "1: ldaxrh %w0, [%3]\n"
42 " stlxrh %w1, %w2, [%3]\n"
43 " cbnz %w1, 1b\n"
44 : "=&r" (ret), "=&r" (tmp)
45 : "r" (x), "r" (ptr)
46 : "memory", "cc");
47 break;
48 case 4:
49 asm volatile("// __xchg4\n"
50 "1: ldaxr %w0, [%3]\n"
51 " stlxr %w1, %w2, [%3]\n"
52 " cbnz %w1, 1b\n"
53 : "=&r" (ret), "=&r" (tmp)
54 : "r" (x), "r" (ptr)
55 : "memory", "cc");
56 break;
57 case 8:
58 asm volatile("// __xchg8\n"
59 "1: ldaxr %0, [%3]\n"
60 " stlxr %w1, %2, [%3]\n"
61 " cbnz %w1, 1b\n"
62 : "=&r" (ret), "=&r" (tmp)
63 : "r" (x), "r" (ptr)
64 : "memory", "cc");
65 break;
66 default:
67 BUILD_BUG();
68 }
69
70 return ret;
71}
72
73#define xchg(ptr,x) \
74 ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
75
76static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
77 unsigned long new, int size)
78{
79 unsigned long oldval = 0, res;
80
81 switch (size) {
82 case 1:
83 do {
84 asm volatile("// __cmpxchg1\n"
85 " ldxrb %w1, [%2]\n"
86 " mov %w0, #0\n"
87 " cmp %w1, %w3\n"
88 " b.ne 1f\n"
89 " stxrb %w0, %w4, [%2]\n"
90 "1:\n"
91 : "=&r" (res), "=&r" (oldval)
92 : "r" (ptr), "Ir" (old), "r" (new)
93 : "cc");
94 } while (res);
95 break;
96
97 case 2:
98 do {
99 asm volatile("// __cmpxchg2\n"
100 " ldxrh %w1, [%2]\n"
101 " mov %w0, #0\n"
102 " cmp %w1, %w3\n"
103 " b.ne 1f\n"
104 " stxrh %w0, %w4, [%2]\n"
105 "1:\n"
106 : "=&r" (res), "=&r" (oldval)
107 : "r" (ptr), "Ir" (old), "r" (new)
108 : "memory", "cc");
109 } while (res);
110 break;
111
112 case 4:
113 do {
114 asm volatile("// __cmpxchg4\n"
115 " ldxr %w1, [%2]\n"
116 " mov %w0, #0\n"
117 " cmp %w1, %w3\n"
118 " b.ne 1f\n"
119 " stxr %w0, %w4, [%2]\n"
120 "1:\n"
121 : "=&r" (res), "=&r" (oldval)
122 : "r" (ptr), "Ir" (old), "r" (new)
123 : "cc");
124 } while (res);
125 break;
126
127 case 8:
128 do {
129 asm volatile("// __cmpxchg8\n"
130 " ldxr %1, [%2]\n"
131 " mov %w0, #0\n"
132 " cmp %1, %3\n"
133 " b.ne 1f\n"
134 " stxr %w0, %4, [%2]\n"
135 "1:\n"
136 : "=&r" (res), "=&r" (oldval)
137 : "r" (ptr), "Ir" (old), "r" (new)
138 : "cc");
139 } while (res);
140 break;
141
142 default:
143 BUILD_BUG();
144 }
145
146 return oldval;
147}
148
149static inline unsigned long __cmpxchg_mb(volatile void *ptr, unsigned long old,
150 unsigned long new, int size)
151{
152 unsigned long ret;
153
154 smp_mb();
155 ret = __cmpxchg(ptr, old, new, size);
156 smp_mb();
157
158 return ret;
159}
160
161#define cmpxchg(ptr,o,n) \
162 ((__typeof__(*(ptr)))__cmpxchg_mb((ptr), \
163 (unsigned long)(o), \
164 (unsigned long)(n), \
165 sizeof(*(ptr))))
166
167#define cmpxchg_local(ptr,o,n) \
168 ((__typeof__(*(ptr)))__cmpxchg((ptr), \
169 (unsigned long)(o), \
170 (unsigned long)(n), \
171 sizeof(*(ptr))))
172
173#endif /* __ASM_CMPXCHG_H */
diff --git a/arch/arm64/include/asm/compiler.h b/arch/arm64/include/asm/compiler.h
new file mode 100644
index 000000000000..ee35fd0f2236
--- /dev/null
+++ b/arch/arm64/include/asm/compiler.h
@@ -0,0 +1,30 @@
1/*
2 * Based on arch/arm/include/asm/compiler.h
3 *
4 * Copyright (C) 2012 ARM Ltd.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18#ifndef __ASM_COMPILER_H
19#define __ASM_COMPILER_H
20
21/*
22 * This is used to ensure the compiler did actually allocate the register we
23 * asked it for some inline assembly sequences. Apparently we can't trust the
24 * compiler from one version to another so a bit of paranoia won't hurt. This
25 * string is meant to be concatenated with the inline asm string and will
26 * cause compilation to stop on mismatch. (for details, see gcc PR 15089)
27 */
28#define __asmeq(x, y) ".ifnc " x "," y " ; .err ; .endif\n\t"
29
30#endif /* __ASM_COMPILER_H */
diff --git a/arch/arm64/include/asm/exception.h b/arch/arm64/include/asm/exception.h
new file mode 100644
index 000000000000..ac63519b7b90
--- /dev/null
+++ b/arch/arm64/include/asm/exception.h
@@ -0,0 +1,23 @@
1/*
2 * Based on arch/arm/include/asm/exception.h
3 *
4 * Copyright (C) 2012 ARM Ltd.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18#ifndef __ASM_EXCEPTION_H
19#define __ASM_EXCEPTION_H
20
21#define __exception __attribute__((section(".exception.text")))
22
23#endif /* __ASM_EXCEPTION_H */
diff --git a/arch/arm64/include/asm/exec.h b/arch/arm64/include/asm/exec.h
new file mode 100644
index 000000000000..db0563c23482
--- /dev/null
+++ b/arch/arm64/include/asm/exec.h
@@ -0,0 +1,23 @@
1/*
2 * Based on arch/arm/include/asm/exec.h
3 *
4 * Copyright (C) 2012 ARM Ltd.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18#ifndef __ASM_EXEC_H
19#define __ASM_EXEC_H
20
21extern unsigned long arch_align_stack(unsigned long sp);
22
23#endif /* __ASM_EXEC_H */
diff --git a/arch/arm64/include/asm/fcntl.h b/arch/arm64/include/asm/fcntl.h
new file mode 100644
index 000000000000..cd2e630c235e
--- /dev/null
+++ b/arch/arm64/include/asm/fcntl.h
@@ -0,0 +1,29 @@
1/*
2 * Copyright (C) 2012 ARM Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16#ifndef __ASM_FCNTL_H
17#define __ASM_FCNTL_H
18
19/*
20 * Using our own definitions for AArch32 (compat) support.
21 */
22#define O_DIRECTORY 040000 /* must be a directory */
23#define O_NOFOLLOW 0100000 /* don't follow links */
24#define O_DIRECT 0200000 /* direct disk access hint - currently ignored */
25#define O_LARGEFILE 0400000
26
27#include <asm-generic/fcntl.h>
28
29#endif
diff --git a/arch/arm64/include/asm/system_misc.h b/arch/arm64/include/asm/system_misc.h
new file mode 100644
index 000000000000..95e407255347
--- /dev/null
+++ b/arch/arm64/include/asm/system_misc.h
@@ -0,0 +1,54 @@
1/*
2 * Based on arch/arm/include/asm/system_misc.h
3 *
4 * Copyright (C) 2012 ARM Ltd.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18#ifndef __ASM_SYSTEM_MISC_H
19#define __ASM_SYSTEM_MISC_H
20
21#ifndef __ASSEMBLY__
22
23#include <linux/compiler.h>
24#include <linux/linkage.h>
25#include <linux/irqflags.h>
26
27struct pt_regs;
28
29void die(const char *msg, struct pt_regs *regs, int err);
30
31struct siginfo;
32void arm64_notify_die(const char *str, struct pt_regs *regs,
33 struct siginfo *info, int err);
34
35void hook_debug_fault_code(int nr, int (*fn)(unsigned long, unsigned int,
36 struct pt_regs *),
37 int sig, int code, const char *name);
38
39struct mm_struct;
40extern void show_pte(struct mm_struct *mm, unsigned long addr);
41extern void __show_regs(struct pt_regs *);
42
43void soft_restart(unsigned long);
44extern void (*pm_restart)(const char *cmd);
45
46#define UDBG_UNDEFINED (1 << 0)
47#define UDBG_SYSCALL (1 << 1)
48#define UDBG_BADABORT (1 << 2)
49#define UDBG_SEGV (1 << 3)
50#define UDBG_BUS (1 << 4)
51
52#endif /* __ASSEMBLY__ */
53
54#endif /* __ASM_SYSTEM_MISC_H */
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