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authorJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-02-10 14:45:43 -0500
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-02-10 14:45:43 -0500
commit81b7bbd1932a04869d4c8635a75222dfc6089f96 (patch)
tree285ae868a1e3a41fb0dbfe346c28e380949bcb55 /include/asm-s390
parent98051995ab44b993f992946055edc6115351f725 (diff)
parent66efc5a7e3061c3597ac43a8bb1026488d57e66b (diff)
Merge branch 'linus'
Conflicts: drivers/scsi/ipr.c Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include/asm-s390')
-rw-r--r--include/asm-s390/compat.h28
-rw-r--r--include/asm-s390/etr.h219
-rw-r--r--include/asm-s390/hardirq.h2
-rw-r--r--include/asm-s390/io.h4
-rw-r--r--include/asm-s390/kdebug.h3
-rw-r--r--include/asm-s390/lowcore.h6
-rw-r--r--include/asm-s390/mmu_context.h50
-rw-r--r--include/asm-s390/pgalloc.h85
-rw-r--r--include/asm-s390/pgtable.h147
-rw-r--r--include/asm-s390/processor.h27
-rw-r--r--include/asm-s390/ptrace.h11
-rw-r--r--include/asm-s390/reset.h3
-rw-r--r--include/asm-s390/sclp.h39
-rw-r--r--include/asm-s390/sections.h2
-rw-r--r--include/asm-s390/setup.h23
-rw-r--r--include/asm-s390/sfp-util.h66
-rw-r--r--include/asm-s390/smp.h6
-rw-r--r--include/asm-s390/system.h4
-rw-r--r--include/asm-s390/tape390.h72
-rw-r--r--include/asm-s390/timer.h3
-rw-r--r--include/asm-s390/timex.h50
-rw-r--r--include/asm-s390/tlbflush.h9
-rw-r--r--include/asm-s390/uaccess.h2
23 files changed, 790 insertions, 71 deletions
diff --git a/include/asm-s390/compat.h b/include/asm-s390/compat.h
index 356a0b183539..296f4f1a20e1 100644
--- a/include/asm-s390/compat.h
+++ b/include/asm-s390/compat.h
@@ -6,6 +6,34 @@
6#include <linux/types.h> 6#include <linux/types.h>
7#include <linux/sched.h> 7#include <linux/sched.h>
8 8
9#define PSW32_MASK_PER 0x40000000UL
10#define PSW32_MASK_DAT 0x04000000UL
11#define PSW32_MASK_IO 0x02000000UL
12#define PSW32_MASK_EXT 0x01000000UL
13#define PSW32_MASK_KEY 0x00F00000UL
14#define PSW32_MASK_MCHECK 0x00040000UL
15#define PSW32_MASK_WAIT 0x00020000UL
16#define PSW32_MASK_PSTATE 0x00010000UL
17#define PSW32_MASK_ASC 0x0000C000UL
18#define PSW32_MASK_CC 0x00003000UL
19#define PSW32_MASK_PM 0x00000f00UL
20
21#define PSW32_ADDR_AMODE31 0x80000000UL
22#define PSW32_ADDR_INSN 0x7FFFFFFFUL
23
24#define PSW32_BASE_BITS 0x00080000UL
25
26#define PSW32_ASC_PRIMARY 0x00000000UL
27#define PSW32_ASC_ACCREG 0x00004000UL
28#define PSW32_ASC_SECONDARY 0x00008000UL
29#define PSW32_ASC_HOME 0x0000C000UL
30
31#define PSW32_MASK_MERGE(CURRENT,NEW) \
32 (((CURRENT) & ~(PSW32_MASK_CC|PSW32_MASK_PM)) | \
33 ((NEW) & (PSW32_MASK_CC|PSW32_MASK_PM)))
34
35extern long psw32_user_bits;
36
9#define COMPAT_USER_HZ 100 37#define COMPAT_USER_HZ 100
10 38
11typedef u32 compat_size_t; 39typedef u32 compat_size_t;
diff --git a/include/asm-s390/etr.h b/include/asm-s390/etr.h
new file mode 100644
index 000000000000..b498f19bb9a7
--- /dev/null
+++ b/include/asm-s390/etr.h
@@ -0,0 +1,219 @@
1/*
2 * include/asm-s390/etr.h
3 *
4 * Copyright IBM Corp. 2006
5 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
6 */
7#ifndef __S390_ETR_H
8#define __S390_ETR_H
9
10/* ETR attachment control register */
11struct etr_eacr {
12 unsigned int e0 : 1; /* port 0 stepping control */
13 unsigned int e1 : 1; /* port 1 stepping control */
14 unsigned int _pad0 : 5; /* must be 00100 */
15 unsigned int dp : 1; /* data port control */
16 unsigned int p0 : 1; /* port 0 change recognition control */
17 unsigned int p1 : 1; /* port 1 change recognition control */
18 unsigned int _pad1 : 3; /* must be 000 */
19 unsigned int ea : 1; /* ETR alert control */
20 unsigned int es : 1; /* ETR sync check control */
21 unsigned int sl : 1; /* switch to local control */
22} __attribute__ ((packed));
23
24/* Port state returned by steai */
25enum etr_psc {
26 etr_psc_operational = 0,
27 etr_psc_semi_operational = 1,
28 etr_psc_protocol_error = 4,
29 etr_psc_no_symbols = 8,
30 etr_psc_no_signal = 12,
31 etr_psc_pps_mode = 13
32};
33
34/* Logical port state returned by stetr */
35enum etr_lpsc {
36 etr_lpsc_operational_step = 0,
37 etr_lpsc_operational_alt = 1,
38 etr_lpsc_semi_operational = 2,
39 etr_lpsc_protocol_error = 4,
40 etr_lpsc_no_symbol_sync = 8,
41 etr_lpsc_no_signal = 12,
42 etr_lpsc_pps_mode = 13
43};
44
45/* ETR status words */
46struct etr_esw {
47 struct etr_eacr eacr; /* attachment control register */
48 unsigned int y : 1; /* stepping mode */
49 unsigned int _pad0 : 5; /* must be 00000 */
50 unsigned int p : 1; /* stepping port number */
51 unsigned int q : 1; /* data port number */
52 unsigned int psc0 : 4; /* port 0 state code */
53 unsigned int psc1 : 4; /* port 1 state code */
54} __attribute__ ((packed));
55
56/* Second level data register status word */
57struct etr_slsw {
58 unsigned int vv1 : 1; /* copy of validity bit data frame 1 */
59 unsigned int vv2 : 1; /* copy of validity bit data frame 2 */
60 unsigned int vv3 : 1; /* copy of validity bit data frame 3 */
61 unsigned int vv4 : 1; /* copy of validity bit data frame 4 */
62 unsigned int _pad0 : 19; /* must by all zeroes */
63 unsigned int n : 1; /* EAF port number */
64 unsigned int v1 : 1; /* validity bit ETR data frame 1 */
65 unsigned int v2 : 1; /* validity bit ETR data frame 2 */
66 unsigned int v3 : 1; /* validity bit ETR data frame 3 */
67 unsigned int v4 : 1; /* validity bit ETR data frame 4 */
68 unsigned int _pad1 : 4; /* must be 0000 */
69} __attribute__ ((packed));
70
71/* ETR data frames */
72struct etr_edf1 {
73 unsigned int u : 1; /* untuned bit */
74 unsigned int _pad0 : 1; /* must be 0 */
75 unsigned int r : 1; /* service request bit */
76 unsigned int _pad1 : 4; /* must be 0000 */
77 unsigned int a : 1; /* time adjustment bit */
78 unsigned int net_id : 8; /* ETR network id */
79 unsigned int etr_id : 8; /* id of ETR which sends data frames */
80 unsigned int etr_pn : 8; /* port number of ETR output port */
81} __attribute__ ((packed));
82
83struct etr_edf2 {
84 unsigned int etv : 32; /* Upper 32 bits of TOD. */
85} __attribute__ ((packed));
86
87struct etr_edf3 {
88 unsigned int rc : 8; /* failure reason code */
89 unsigned int _pad0 : 3; /* must be 000 */
90 unsigned int c : 1; /* ETR coupled bit */
91 unsigned int tc : 4; /* ETR type code */
92 unsigned int blto : 8; /* biased local time offset */
93 /* (blto - 128) * 15 = minutes */
94 unsigned int buo : 8; /* biased utc offset */
95 /* (buo - 128) = leap seconds */
96} __attribute__ ((packed));
97
98struct etr_edf4 {
99 unsigned int ed : 8; /* ETS device dependent data */
100 unsigned int _pad0 : 1; /* must be 0 */
101 unsigned int buc : 5; /* biased ut1 correction */
102 /* (buc - 16) * 0.1 seconds */
103 unsigned int em : 6; /* ETS error magnitude */
104 unsigned int dc : 6; /* ETS drift code */
105 unsigned int sc : 6; /* ETS steering code */
106} __attribute__ ((packed));
107
108/*
109 * ETR attachment information block, two formats
110 * format 1 has 4 reserved words with a size of 64 bytes
111 * format 2 has 16 reserved words with a size of 96 bytes
112 */
113struct etr_aib {
114 struct etr_esw esw;
115 struct etr_slsw slsw;
116 unsigned long long tsp;
117 struct etr_edf1 edf1;
118 struct etr_edf2 edf2;
119 struct etr_edf3 edf3;
120 struct etr_edf4 edf4;
121 unsigned int reserved[16];
122} __attribute__ ((packed,aligned(8)));
123
124/* ETR interruption parameter */
125struct etr_interruption_parameter {
126 unsigned int _pad0 : 8;
127 unsigned int pc0 : 1; /* port 0 state change */
128 unsigned int pc1 : 1; /* port 1 state change */
129 unsigned int _pad1 : 3;
130 unsigned int eai : 1; /* ETR alert indication */
131 unsigned int _pad2 : 18;
132} __attribute__ ((packed));
133
134/* Query TOD offset result */
135struct etr_ptff_qto {
136 unsigned long long physical_clock;
137 unsigned long long tod_offset;
138 unsigned long long logical_tod_offset;
139 unsigned long long tod_epoch_difference;
140} __attribute__ ((packed));
141
142/* Inline assembly helper functions */
143static inline int etr_setr(struct etr_eacr *ctrl)
144{
145 int rc = -ENOSYS;
146
147 asm volatile(
148 " .insn s,0xb2160000,0(%2)\n"
149 "0: la %0,0\n"
150 "1:\n"
151 EX_TABLE(0b,1b)
152 : "+d" (rc) : "m" (*ctrl), "a" (ctrl));
153 return rc;
154}
155
156/* Stores a format 1 aib with 64 bytes */
157static inline int etr_stetr(struct etr_aib *aib)
158{
159 int rc = -ENOSYS;
160
161 asm volatile(
162 " .insn s,0xb2170000,0(%2)\n"
163 "0: la %0,0\n"
164 "1:\n"
165 EX_TABLE(0b,1b)
166 : "+d" (rc) : "m" (*aib), "a" (aib));
167 return rc;
168}
169
170/* Stores a format 2 aib with 96 bytes for specified port */
171static inline int etr_steai(struct etr_aib *aib, unsigned int func)
172{
173 register unsigned int reg0 asm("0") = func;
174 int rc = -ENOSYS;
175
176 asm volatile(
177 " .insn s,0xb2b30000,0(%2)\n"
178 "0: la %0,0\n"
179 "1:\n"
180 EX_TABLE(0b,1b)
181 : "+d" (rc) : "m" (*aib), "a" (aib), "d" (reg0));
182 return rc;
183}
184
185/* Function codes for the steai instruction. */
186#define ETR_STEAI_STEPPING_PORT 0x10
187#define ETR_STEAI_ALTERNATE_PORT 0x11
188#define ETR_STEAI_PORT_0 0x12
189#define ETR_STEAI_PORT_1 0x13
190
191static inline int etr_ptff(void *ptff_block, unsigned int func)
192{
193 register unsigned int reg0 asm("0") = func;
194 register unsigned long reg1 asm("1") = (unsigned long) ptff_block;
195 int rc = -ENOSYS;
196
197 asm volatile(
198 " .word 0x0104\n"
199 " ipm %0\n"
200 " srl %0,28\n"
201 : "=d" (rc), "=m" (ptff_block)
202 : "d" (reg0), "d" (reg1), "m" (ptff_block) : "cc");
203 return rc;
204}
205
206/* Function codes for the ptff instruction. */
207#define ETR_PTFF_QAF 0x00 /* query available functions */
208#define ETR_PTFF_QTO 0x01 /* query tod offset */
209#define ETR_PTFF_QSI 0x02 /* query steering information */
210#define ETR_PTFF_ATO 0x40 /* adjust tod offset */
211#define ETR_PTFF_STO 0x41 /* set tod offset */
212#define ETR_PTFF_SFS 0x42 /* set fine steering rate */
213#define ETR_PTFF_SGS 0x43 /* set gross steering rate */
214
215/* Functions needed by the machine check handler */
216extern void etr_switch_to_local(void);
217extern void etr_sync_check(void);
218
219#endif /* __S390_ETR_H */
diff --git a/include/asm-s390/hardirq.h b/include/asm-s390/hardirq.h
index c2f6a8782d31..31beb18cb3d1 100644
--- a/include/asm-s390/hardirq.h
+++ b/include/asm-s390/hardirq.h
@@ -32,6 +32,6 @@ typedef struct {
32 32
33#define HARDIRQ_BITS 8 33#define HARDIRQ_BITS 8
34 34
35extern void account_ticks(void); 35extern void account_ticks(u64 time);
36 36
37#endif /* __ASM_HARDIRQ_H */ 37#endif /* __ASM_HARDIRQ_H */
diff --git a/include/asm-s390/io.h b/include/asm-s390/io.h
index efb7de9c1c6b..a4c2d550dad4 100644
--- a/include/asm-s390/io.h
+++ b/include/asm-s390/io.h
@@ -28,11 +28,7 @@ static inline unsigned long virt_to_phys(volatile void * address)
28{ 28{
29 unsigned long real_address; 29 unsigned long real_address;
30 asm volatile( 30 asm volatile(
31#ifndef __s390x__
32 " lra %0,0(%1)\n" 31 " lra %0,0(%1)\n"
33#else /* __s390x__ */
34 " lrag %0,0(%1)\n"
35#endif /* __s390x__ */
36 " jz 0f\n" 32 " jz 0f\n"
37 " la %0,0\n" 33 " la %0,0\n"
38 "0:" 34 "0:"
diff --git a/include/asm-s390/kdebug.h b/include/asm-s390/kdebug.h
index 40cc68025e01..1b50f89819a4 100644
--- a/include/asm-s390/kdebug.h
+++ b/include/asm-s390/kdebug.h
@@ -26,7 +26,6 @@ extern int register_page_fault_notifier(struct notifier_block *);
26extern int unregister_page_fault_notifier(struct notifier_block *); 26extern int unregister_page_fault_notifier(struct notifier_block *);
27extern struct atomic_notifier_head s390die_chain; 27extern struct atomic_notifier_head s390die_chain;
28 28
29
30enum die_val { 29enum die_val {
31 DIE_OOPS = 1, 30 DIE_OOPS = 1,
32 DIE_BPT, 31 DIE_BPT,
@@ -56,4 +55,6 @@ static inline int notify_die(enum die_val val, const char *str,
56 return atomic_notifier_call_chain(&s390die_chain, val, &args); 55 return atomic_notifier_call_chain(&s390die_chain, val, &args);
57} 56}
58 57
58extern void die(const char *, struct pt_regs *, long);
59
59#endif 60#endif
diff --git a/include/asm-s390/lowcore.h b/include/asm-s390/lowcore.h
index 74f7389bd3ee..4a31d0a7ee83 100644
--- a/include/asm-s390/lowcore.h
+++ b/include/asm-s390/lowcore.h
@@ -220,7 +220,8 @@ struct _lowcore
220 __u32 kernel_asce; /* 0xc4c */ 220 __u32 kernel_asce; /* 0xc4c */
221 __u32 user_asce; /* 0xc50 */ 221 __u32 user_asce; /* 0xc50 */
222 __u32 panic_stack; /* 0xc54 */ 222 __u32 panic_stack; /* 0xc54 */
223 __u8 pad10[0xc60-0xc58]; /* 0xc58 */ 223 __u32 user_exec_asce; /* 0xc58 */
224 __u8 pad10[0xc60-0xc5c]; /* 0xc5c */
224 /* entry.S sensitive area start */ 225 /* entry.S sensitive area start */
225 struct cpuinfo_S390 cpu_data; /* 0xc60 */ 226 struct cpuinfo_S390 cpu_data; /* 0xc60 */
226 __u32 ipl_device; /* 0xc7c */ 227 __u32 ipl_device; /* 0xc7c */
@@ -310,7 +311,8 @@ struct _lowcore
310 __u64 kernel_asce; /* 0xd58 */ 311 __u64 kernel_asce; /* 0xd58 */
311 __u64 user_asce; /* 0xd60 */ 312 __u64 user_asce; /* 0xd60 */
312 __u64 panic_stack; /* 0xd68 */ 313 __u64 panic_stack; /* 0xd68 */
313 __u8 pad10[0xd80-0xd70]; /* 0xd70 */ 314 __u64 user_exec_asce; /* 0xd70 */
315 __u8 pad10[0xd80-0xd78]; /* 0xd78 */
314 /* entry.S sensitive area start */ 316 /* entry.S sensitive area start */
315 struct cpuinfo_S390 cpu_data; /* 0xd80 */ 317 struct cpuinfo_S390 cpu_data; /* 0xd80 */
316 __u32 ipl_device; /* 0xdb8 */ 318 __u32 ipl_device; /* 0xdb8 */
diff --git a/include/asm-s390/mmu_context.h b/include/asm-s390/mmu_context.h
index bcf24a873874..1d21da220d49 100644
--- a/include/asm-s390/mmu_context.h
+++ b/include/asm-s390/mmu_context.h
@@ -9,6 +9,7 @@
9#ifndef __S390_MMU_CONTEXT_H 9#ifndef __S390_MMU_CONTEXT_H
10#define __S390_MMU_CONTEXT_H 10#define __S390_MMU_CONTEXT_H
11 11
12#include <asm/pgalloc.h>
12/* 13/*
13 * get a new mmu context.. S390 don't know about contexts. 14 * get a new mmu context.. S390 don't know about contexts.
14 */ 15 */
@@ -16,29 +17,44 @@
16 17
17#define destroy_context(mm) do { } while (0) 18#define destroy_context(mm) do { } while (0)
18 19
20#ifndef __s390x__
21#define LCTL_OPCODE "lctl"
22#define PGTABLE_BITS (_SEGMENT_TABLE|USER_STD_MASK)
23#else
24#define LCTL_OPCODE "lctlg"
25#define PGTABLE_BITS (_REGION_TABLE|USER_STD_MASK)
26#endif
27
19static inline void enter_lazy_tlb(struct mm_struct *mm, 28static inline void enter_lazy_tlb(struct mm_struct *mm,
20 struct task_struct *tsk) 29 struct task_struct *tsk)
21{ 30{
22} 31}
23 32
24static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, 33static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
25 struct task_struct *tsk) 34 struct task_struct *tsk)
26{ 35{
27 if (prev != next) { 36 pgd_t *shadow_pgd = get_shadow_pgd(next->pgd);
28#ifndef __s390x__ 37
29 S390_lowcore.user_asce = (__pa(next->pgd)&PAGE_MASK) | 38 if (prev != next) {
30 (_SEGMENT_TABLE|USER_STD_MASK); 39 S390_lowcore.user_asce = (__pa(next->pgd) & PAGE_MASK) |
31 /* Load home space page table origin. */ 40 PGTABLE_BITS;
32 asm volatile("lctl 13,13,%0" 41 if (shadow_pgd) {
33 : : "m" (S390_lowcore.user_asce) ); 42 /* Load primary/secondary space page table origin. */
34#else /* __s390x__ */ 43 S390_lowcore.user_exec_asce =
35 S390_lowcore.user_asce = (__pa(next->pgd) & PAGE_MASK) | 44 (__pa(shadow_pgd) & PAGE_MASK) | PGTABLE_BITS;
36 (_REGION_TABLE|USER_STD_MASK); 45 asm volatile(LCTL_OPCODE" 1,1,%0\n"
37 /* Load home space page table origin. */ 46 LCTL_OPCODE" 7,7,%1"
38 asm volatile("lctlg 13,13,%0" 47 : : "m" (S390_lowcore.user_exec_asce),
39 : : "m" (S390_lowcore.user_asce) ); 48 "m" (S390_lowcore.user_asce) );
40#endif /* __s390x__ */ 49 } else if (switch_amode) {
41 } 50 /* Load primary space page table origin. */
51 asm volatile(LCTL_OPCODE" 1,1,%0"
52 : : "m" (S390_lowcore.user_asce) );
53 } else
54 /* Load home space page table origin. */
55 asm volatile(LCTL_OPCODE" 13,13,%0"
56 : : "m" (S390_lowcore.user_asce) );
57 }
42 cpu_set(smp_processor_id(), next->cpu_vm_mask); 58 cpu_set(smp_processor_id(), next->cpu_vm_mask);
43} 59}
44 60
@@ -51,4 +67,4 @@ static inline void activate_mm(struct mm_struct *prev,
51 set_fs(current->thread.mm_segment); 67 set_fs(current->thread.mm_segment);
52} 68}
53 69
54#endif 70#endif /* __S390_MMU_CONTEXT_H */
diff --git a/include/asm-s390/pgalloc.h b/include/asm-s390/pgalloc.h
index 0707a7e2fc16..56c8a6c80e2e 100644
--- a/include/asm-s390/pgalloc.h
+++ b/include/asm-s390/pgalloc.h
@@ -47,6 +47,17 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
47 47
48 if (!pgd) 48 if (!pgd)
49 return NULL; 49 return NULL;
50 if (s390_noexec) {
51 pgd_t *shadow_pgd = (pgd_t *)
52 __get_free_pages(GFP_KERNEL, PGD_ALLOC_ORDER);
53 struct page *page = virt_to_page(pgd);
54
55 if (!shadow_pgd) {
56 free_pages((unsigned long) pgd, PGD_ALLOC_ORDER);
57 return NULL;
58 }
59 page->lru.next = (void *) shadow_pgd;
60 }
50 for (i = 0; i < PTRS_PER_PGD; i++) 61 for (i = 0; i < PTRS_PER_PGD; i++)
51#ifndef __s390x__ 62#ifndef __s390x__
52 pmd_clear(pmd_offset(pgd + i, i*PGDIR_SIZE)); 63 pmd_clear(pmd_offset(pgd + i, i*PGDIR_SIZE));
@@ -58,6 +69,10 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
58 69
59static inline void pgd_free(pgd_t *pgd) 70static inline void pgd_free(pgd_t *pgd)
60{ 71{
72 pgd_t *shadow_pgd = get_shadow_pgd(pgd);
73
74 if (shadow_pgd)
75 free_pages((unsigned long) shadow_pgd, PGD_ALLOC_ORDER);
61 free_pages((unsigned long) pgd, PGD_ALLOC_ORDER); 76 free_pages((unsigned long) pgd, PGD_ALLOC_ORDER);
62} 77}
63 78
@@ -71,6 +86,7 @@ static inline void pgd_free(pgd_t *pgd)
71#define pmd_free(x) do { } while (0) 86#define pmd_free(x) do { } while (0)
72#define __pmd_free_tlb(tlb,x) do { } while (0) 87#define __pmd_free_tlb(tlb,x) do { } while (0)
73#define pgd_populate(mm, pmd, pte) BUG() 88#define pgd_populate(mm, pmd, pte) BUG()
89#define pgd_populate_kernel(mm, pmd, pte) BUG()
74#else /* __s390x__ */ 90#else /* __s390x__ */
75static inline pmd_t * pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr) 91static inline pmd_t * pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
76{ 92{
@@ -79,6 +95,17 @@ static inline pmd_t * pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
79 95
80 if (!pmd) 96 if (!pmd)
81 return NULL; 97 return NULL;
98 if (s390_noexec) {
99 pmd_t *shadow_pmd = (pmd_t *)
100 __get_free_pages(GFP_KERNEL, PMD_ALLOC_ORDER);
101 struct page *page = virt_to_page(pmd);
102
103 if (!shadow_pmd) {
104 free_pages((unsigned long) pmd, PMD_ALLOC_ORDER);
105 return NULL;
106 }
107 page->lru.next = (void *) shadow_pmd;
108 }
82 for (i=0; i < PTRS_PER_PMD; i++) 109 for (i=0; i < PTRS_PER_PMD; i++)
83 pmd_clear(pmd + i); 110 pmd_clear(pmd + i);
84 return pmd; 111 return pmd;
@@ -86,6 +113,10 @@ static inline pmd_t * pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
86 113
87static inline void pmd_free (pmd_t *pmd) 114static inline void pmd_free (pmd_t *pmd)
88{ 115{
116 pmd_t *shadow_pmd = get_shadow_pmd(pmd);
117
118 if (shadow_pmd)
119 free_pages((unsigned long) shadow_pmd, PMD_ALLOC_ORDER);
89 free_pages((unsigned long) pmd, PMD_ALLOC_ORDER); 120 free_pages((unsigned long) pmd, PMD_ALLOC_ORDER);
90} 121}
91 122
@@ -95,11 +126,22 @@ static inline void pmd_free (pmd_t *pmd)
95 pmd_free(pmd); \ 126 pmd_free(pmd); \
96 } while (0) 127 } while (0)
97 128
98static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) 129static inline void
130pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
99{ 131{
100 pgd_val(*pgd) = _PGD_ENTRY | __pa(pmd); 132 pgd_val(*pgd) = _PGD_ENTRY | __pa(pmd);
101} 133}
102 134
135static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
136{
137 pgd_t *shadow_pgd = get_shadow_pgd(pgd);
138 pmd_t *shadow_pmd = get_shadow_pmd(pmd);
139
140 if (shadow_pgd && shadow_pmd)
141 pgd_populate_kernel(mm, shadow_pgd, shadow_pmd);
142 pgd_populate_kernel(mm, pgd, pmd);
143}
144
103#endif /* __s390x__ */ 145#endif /* __s390x__ */
104 146
105static inline void 147static inline void
@@ -119,7 +161,13 @@ pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
119static inline void 161static inline void
120pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *page) 162pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *page)
121{ 163{
122 pmd_populate_kernel(mm, pmd, (pte_t *)page_to_phys(page)); 164 pte_t *pte = (pte_t *)page_to_phys(page);
165 pmd_t *shadow_pmd = get_shadow_pmd(pmd);
166 pte_t *shadow_pte = get_shadow_pte(pte);
167
168 pmd_populate_kernel(mm, pmd, pte);
169 if (shadow_pmd && shadow_pte)
170 pmd_populate_kernel(mm, shadow_pmd, shadow_pte);
123} 171}
124 172
125/* 173/*
@@ -133,6 +181,17 @@ pte_alloc_one_kernel(struct mm_struct *mm, unsigned long vmaddr)
133 181
134 if (!pte) 182 if (!pte)
135 return NULL; 183 return NULL;
184 if (s390_noexec) {
185 pte_t *shadow_pte = (pte_t *)
186 __get_free_page(GFP_KERNEL|__GFP_REPEAT);
187 struct page *page = virt_to_page(pte);
188
189 if (!shadow_pte) {
190 free_page((unsigned long) pte);
191 return NULL;
192 }
193 page->lru.next = (void *) shadow_pte;
194 }
136 for (i=0; i < PTRS_PER_PTE; i++) { 195 for (i=0; i < PTRS_PER_PTE; i++) {
137 pte_clear(mm, vmaddr, pte + i); 196 pte_clear(mm, vmaddr, pte + i);
138 vmaddr += PAGE_SIZE; 197 vmaddr += PAGE_SIZE;
@@ -151,14 +210,30 @@ pte_alloc_one(struct mm_struct *mm, unsigned long vmaddr)
151 210
152static inline void pte_free_kernel(pte_t *pte) 211static inline void pte_free_kernel(pte_t *pte)
153{ 212{
154 free_page((unsigned long) pte); 213 pte_t *shadow_pte = get_shadow_pte(pte);
214
215 if (shadow_pte)
216 free_page((unsigned long) shadow_pte);
217 free_page((unsigned long) pte);
155} 218}
156 219
157static inline void pte_free(struct page *pte) 220static inline void pte_free(struct page *pte)
158{ 221{
159 __free_page(pte); 222 struct page *shadow_page = get_shadow_page(pte);
223
224 if (shadow_page)
225 __free_page(shadow_page);
226 __free_page(pte);
160} 227}
161 228
162#define __pte_free_tlb(tlb,pte) tlb_remove_page(tlb,pte) 229#define __pte_free_tlb(tlb, pte) \
230({ \
231 struct mmu_gather *__tlb = (tlb); \
232 struct page *__pte = (pte); \
233 struct page *shadow_page = get_shadow_page(__pte); \
234 if (shadow_page) \
235 tlb_remove_page(__tlb, shadow_page); \
236 tlb_remove_page(__tlb, __pte); \
237})
163 238
164#endif /* _S390_PGALLOC_H */ 239#endif /* _S390_PGALLOC_H */
diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h
index ae61aca5d483..13c16546eff5 100644
--- a/include/asm-s390/pgtable.h
+++ b/include/asm-s390/pgtable.h
@@ -40,6 +40,7 @@ struct mm_struct;
40 40
41extern pgd_t swapper_pg_dir[] __attribute__ ((aligned (4096))); 41extern pgd_t swapper_pg_dir[] __attribute__ ((aligned (4096)));
42extern void paging_init(void); 42extern void paging_init(void);
43extern void vmem_map_init(void);
43 44
44/* 45/*
45 * The S390 doesn't have any external MMU info: the kernel page 46 * The S390 doesn't have any external MMU info: the kernel page
@@ -223,6 +224,8 @@ extern unsigned long vmalloc_end;
223#define _PAGE_TYPE_FILE 0x601 /* bit 0x002 is used for offset !! */ 224#define _PAGE_TYPE_FILE 0x601 /* bit 0x002 is used for offset !! */
224#define _PAGE_TYPE_RO 0x200 225#define _PAGE_TYPE_RO 0x200
225#define _PAGE_TYPE_RW 0x000 226#define _PAGE_TYPE_RW 0x000
227#define _PAGE_TYPE_EX_RO 0x202
228#define _PAGE_TYPE_EX_RW 0x002
226 229
227/* 230/*
228 * PTE type bits are rather complicated. handle_pte_fault uses pte_present, 231 * PTE type bits are rather complicated. handle_pte_fault uses pte_present,
@@ -243,11 +246,13 @@ extern unsigned long vmalloc_end;
243 * _PAGE_TYPE_FILE 11?1 -> 11?1 246 * _PAGE_TYPE_FILE 11?1 -> 11?1
244 * _PAGE_TYPE_RO 0100 -> 1100 247 * _PAGE_TYPE_RO 0100 -> 1100
245 * _PAGE_TYPE_RW 0000 -> 1000 248 * _PAGE_TYPE_RW 0000 -> 1000
249 * _PAGE_TYPE_EX_RO 0110 -> 1110
250 * _PAGE_TYPE_EX_RW 0010 -> 1010
246 * 251 *
247 * pte_none is true for bits combinations 1000, 1100 252 * pte_none is true for bits combinations 1000, 1010, 1100, 1110
248 * pte_present is true for bits combinations 0000, 0010, 0100, 0110, 1001 253 * pte_present is true for bits combinations 0000, 0010, 0100, 0110, 1001
249 * pte_file is true for bits combinations 1101, 1111 254 * pte_file is true for bits combinations 1101, 1111
250 * swap pte is 1011 and 0001, 0011, 0101, 0111, 1010 and 1110 are invalid. 255 * swap pte is 1011 and 0001, 0011, 0101, 0111 are invalid.
251 */ 256 */
252 257
253#ifndef __s390x__ 258#ifndef __s390x__
@@ -312,33 +317,100 @@ extern unsigned long vmalloc_end;
312#define PAGE_NONE __pgprot(_PAGE_TYPE_NONE) 317#define PAGE_NONE __pgprot(_PAGE_TYPE_NONE)
313#define PAGE_RO __pgprot(_PAGE_TYPE_RO) 318#define PAGE_RO __pgprot(_PAGE_TYPE_RO)
314#define PAGE_RW __pgprot(_PAGE_TYPE_RW) 319#define PAGE_RW __pgprot(_PAGE_TYPE_RW)
320#define PAGE_EX_RO __pgprot(_PAGE_TYPE_EX_RO)
321#define PAGE_EX_RW __pgprot(_PAGE_TYPE_EX_RW)
315 322
316#define PAGE_KERNEL PAGE_RW 323#define PAGE_KERNEL PAGE_RW
317#define PAGE_COPY PAGE_RO 324#define PAGE_COPY PAGE_RO
318 325
319/* 326/*
320 * The S390 can't do page protection for execute, and considers that the 327 * Dependent on the EXEC_PROTECT option s390 can do execute protection.
321 * same are read. Also, write permissions imply read permissions. This is 328 * Write permission always implies read permission. In theory with a
322 * the closest we can get.. 329 * primary/secondary page table execute only can be implemented but
330 * it would cost an additional bit in the pte to distinguish all the
331 * different pte types. To avoid that execute permission currently
332 * implies read permission as well.
323 */ 333 */
324 /*xwr*/ 334 /*xwr*/
325#define __P000 PAGE_NONE 335#define __P000 PAGE_NONE
326#define __P001 PAGE_RO 336#define __P001 PAGE_RO
327#define __P010 PAGE_RO 337#define __P010 PAGE_RO
328#define __P011 PAGE_RO 338#define __P011 PAGE_RO
329#define __P100 PAGE_RO 339#define __P100 PAGE_EX_RO
330#define __P101 PAGE_RO 340#define __P101 PAGE_EX_RO
331#define __P110 PAGE_RO 341#define __P110 PAGE_EX_RO
332#define __P111 PAGE_RO 342#define __P111 PAGE_EX_RO
333 343
334#define __S000 PAGE_NONE 344#define __S000 PAGE_NONE
335#define __S001 PAGE_RO 345#define __S001 PAGE_RO
336#define __S010 PAGE_RW 346#define __S010 PAGE_RW
337#define __S011 PAGE_RW 347#define __S011 PAGE_RW
338#define __S100 PAGE_RO 348#define __S100 PAGE_EX_RO
339#define __S101 PAGE_RO 349#define __S101 PAGE_EX_RO
340#define __S110 PAGE_RW 350#define __S110 PAGE_EX_RW
341#define __S111 PAGE_RW 351#define __S111 PAGE_EX_RW
352
353#ifndef __s390x__
354# define PMD_SHADOW_SHIFT 1
355# define PGD_SHADOW_SHIFT 1
356#else /* __s390x__ */
357# define PMD_SHADOW_SHIFT 2
358# define PGD_SHADOW_SHIFT 2
359#endif /* __s390x__ */
360
361static inline struct page *get_shadow_page(struct page *page)
362{
363 if (s390_noexec && !list_empty(&page->lru))
364 return virt_to_page(page->lru.next);
365 return NULL;
366}
367
368static inline pte_t *get_shadow_pte(pte_t *ptep)
369{
370 unsigned long pteptr = (unsigned long) (ptep);
371
372 if (s390_noexec) {
373 unsigned long offset = pteptr & (PAGE_SIZE - 1);
374 void *addr = (void *) (pteptr ^ offset);
375 struct page *page = virt_to_page(addr);
376 if (!list_empty(&page->lru))
377 return (pte_t *) ((unsigned long) page->lru.next |
378 offset);
379 }
380 return NULL;
381}
382
383static inline pmd_t *get_shadow_pmd(pmd_t *pmdp)
384{
385 unsigned long pmdptr = (unsigned long) (pmdp);
386
387 if (s390_noexec) {
388 unsigned long offset = pmdptr &
389 ((PAGE_SIZE << PMD_SHADOW_SHIFT) - 1);
390 void *addr = (void *) (pmdptr ^ offset);
391 struct page *page = virt_to_page(addr);
392 if (!list_empty(&page->lru))
393 return (pmd_t *) ((unsigned long) page->lru.next |
394 offset);
395 }
396 return NULL;
397}
398
399static inline pgd_t *get_shadow_pgd(pgd_t *pgdp)
400{
401 unsigned long pgdptr = (unsigned long) (pgdp);
402
403 if (s390_noexec) {
404 unsigned long offset = pgdptr &
405 ((PAGE_SIZE << PGD_SHADOW_SHIFT) - 1);
406 void *addr = (void *) (pgdptr ^ offset);
407 struct page *page = virt_to_page(addr);
408 if (!list_empty(&page->lru))
409 return (pgd_t *) ((unsigned long) page->lru.next |
410 offset);
411 }
412 return NULL;
413}
342 414
343/* 415/*
344 * Certain architectures need to do special things when PTEs 416 * Certain architectures need to do special things when PTEs
@@ -347,7 +419,16 @@ extern unsigned long vmalloc_end;
347 */ 419 */
348static inline void set_pte(pte_t *pteptr, pte_t pteval) 420static inline void set_pte(pte_t *pteptr, pte_t pteval)
349{ 421{
422 pte_t *shadow_pte = get_shadow_pte(pteptr);
423
350 *pteptr = pteval; 424 *pteptr = pteval;
425 if (shadow_pte) {
426 if (!(pte_val(pteval) & _PAGE_INVALID) &&
427 (pte_val(pteval) & _PAGE_SWX))
428 pte_val(*shadow_pte) = pte_val(pteval) | _PAGE_RO;
429 else
430 pte_val(*shadow_pte) = _PAGE_TYPE_EMPTY;
431 }
351} 432}
352#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) 433#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
353 434
@@ -465,7 +546,7 @@ static inline int pte_read(pte_t pte)
465 546
466static inline void pgd_clear(pgd_t * pgdp) { } 547static inline void pgd_clear(pgd_t * pgdp) { }
467 548
468static inline void pmd_clear(pmd_t * pmdp) 549static inline void pmd_clear_kernel(pmd_t * pmdp)
469{ 550{
470 pmd_val(pmdp[0]) = _PAGE_TABLE_INV; 551 pmd_val(pmdp[0]) = _PAGE_TABLE_INV;
471 pmd_val(pmdp[1]) = _PAGE_TABLE_INV; 552 pmd_val(pmdp[1]) = _PAGE_TABLE_INV;
@@ -473,24 +554,55 @@ static inline void pmd_clear(pmd_t * pmdp)
473 pmd_val(pmdp[3]) = _PAGE_TABLE_INV; 554 pmd_val(pmdp[3]) = _PAGE_TABLE_INV;
474} 555}
475 556
557static inline void pmd_clear(pmd_t * pmdp)
558{
559 pmd_t *shadow_pmd = get_shadow_pmd(pmdp);
560
561 pmd_clear_kernel(pmdp);
562 if (shadow_pmd)
563 pmd_clear_kernel(shadow_pmd);
564}
565
476#else /* __s390x__ */ 566#else /* __s390x__ */
477 567
478static inline void pgd_clear(pgd_t * pgdp) 568static inline void pgd_clear_kernel(pgd_t * pgdp)
479{ 569{
480 pgd_val(*pgdp) = _PGD_ENTRY_INV | _PGD_ENTRY; 570 pgd_val(*pgdp) = _PGD_ENTRY_INV | _PGD_ENTRY;
481} 571}
482 572
483static inline void pmd_clear(pmd_t * pmdp) 573static inline void pgd_clear(pgd_t * pgdp)
574{
575 pgd_t *shadow_pgd = get_shadow_pgd(pgdp);
576
577 pgd_clear_kernel(pgdp);
578 if (shadow_pgd)
579 pgd_clear_kernel(shadow_pgd);
580}
581
582static inline void pmd_clear_kernel(pmd_t * pmdp)
484{ 583{
485 pmd_val(*pmdp) = _PMD_ENTRY_INV | _PMD_ENTRY; 584 pmd_val(*pmdp) = _PMD_ENTRY_INV | _PMD_ENTRY;
486 pmd_val1(*pmdp) = _PMD_ENTRY_INV | _PMD_ENTRY; 585 pmd_val1(*pmdp) = _PMD_ENTRY_INV | _PMD_ENTRY;
487} 586}
488 587
588static inline void pmd_clear(pmd_t * pmdp)
589{
590 pmd_t *shadow_pmd = get_shadow_pmd(pmdp);
591
592 pmd_clear_kernel(pmdp);
593 if (shadow_pmd)
594 pmd_clear_kernel(shadow_pmd);
595}
596
489#endif /* __s390x__ */ 597#endif /* __s390x__ */
490 598
491static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) 599static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
492{ 600{
601 pte_t *shadow_pte = get_shadow_pte(ptep);
602
493 pte_val(*ptep) = _PAGE_TYPE_EMPTY; 603 pte_val(*ptep) = _PAGE_TYPE_EMPTY;
604 if (shadow_pte)
605 pte_val(*shadow_pte) = _PAGE_TYPE_EMPTY;
494} 606}
495 607
496/* 608/*
@@ -608,8 +720,11 @@ ptep_clear_flush(struct vm_area_struct *vma,
608 unsigned long address, pte_t *ptep) 720 unsigned long address, pte_t *ptep)
609{ 721{
610 pte_t pte = *ptep; 722 pte_t pte = *ptep;
723 pte_t *shadow_pte = get_shadow_pte(ptep);
611 724
612 __ptep_ipte(address, ptep); 725 __ptep_ipte(address, ptep);
726 if (shadow_pte)
727 __ptep_ipte(address, shadow_pte);
613 return pte; 728 return pte;
614} 729}
615 730
diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index cbbedc63ba25..4c1b73940351 100644
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -50,6 +50,7 @@ struct cpuinfo_S390
50 unsigned long pgtable_cache_sz; 50 unsigned long pgtable_cache_sz;
51}; 51};
52 52
53extern void s390_adjust_jiffies(void);
53extern void print_cpu_info(struct cpuinfo_S390 *); 54extern void print_cpu_info(struct cpuinfo_S390 *);
54 55
55/* Lazy FPU handling on uni-processor */ 56/* Lazy FPU handling on uni-processor */
@@ -144,7 +145,8 @@ struct stack_frame {
144#ifndef __s390x__ 145#ifndef __s390x__
145 146
146#define start_thread(regs, new_psw, new_stackp) do { \ 147#define start_thread(regs, new_psw, new_stackp) do { \
147 regs->psw.mask = PSW_USER_BITS; \ 148 set_fs(USER_DS); \
149 regs->psw.mask = psw_user_bits; \
148 regs->psw.addr = new_psw | PSW_ADDR_AMODE; \ 150 regs->psw.addr = new_psw | PSW_ADDR_AMODE; \
149 regs->gprs[15] = new_stackp ; \ 151 regs->gprs[15] = new_stackp ; \
150} while (0) 152} while (0)
@@ -152,13 +154,15 @@ struct stack_frame {
152#else /* __s390x__ */ 154#else /* __s390x__ */
153 155
154#define start_thread(regs, new_psw, new_stackp) do { \ 156#define start_thread(regs, new_psw, new_stackp) do { \
155 regs->psw.mask = PSW_USER_BITS; \ 157 set_fs(USER_DS); \
158 regs->psw.mask = psw_user_bits; \
156 regs->psw.addr = new_psw; \ 159 regs->psw.addr = new_psw; \
157 regs->gprs[15] = new_stackp; \ 160 regs->gprs[15] = new_stackp; \
158} while (0) 161} while (0)
159 162
160#define start_thread31(regs, new_psw, new_stackp) do { \ 163#define start_thread31(regs, new_psw, new_stackp) do { \
161 regs->psw.mask = PSW_USER32_BITS; \ 164 set_fs(USER_DS); \
165 regs->psw.mask = psw_user32_bits; \
162 regs->psw.addr = new_psw; \ 166 regs->psw.addr = new_psw; \
163 regs->gprs[15] = new_stackp; \ 167 regs->gprs[15] = new_stackp; \
164} while (0) 168} while (0)
@@ -201,9 +205,8 @@ unsigned long get_wchan(struct task_struct *p);
201static inline void cpu_relax(void) 205static inline void cpu_relax(void)
202{ 206{
203 if (MACHINE_HAS_DIAG44) 207 if (MACHINE_HAS_DIAG44)
204 asm volatile("diag 0,0,68" : : : "memory"); 208 asm volatile("diag 0,0,68");
205 else 209 barrier();
206 barrier();
207} 210}
208 211
209/* 212/*
@@ -328,6 +331,18 @@ static inline void disabled_wait(unsigned long code)
328} 331}
329 332
330/* 333/*
334 * Basic Machine Check/Program Check Handler.
335 */
336
337extern void s390_base_mcck_handler(void);
338extern void s390_base_pgm_handler(void);
339extern void s390_base_ext_handler(void);
340
341extern void (*s390_base_mcck_handler_fn)(void);
342extern void (*s390_base_pgm_handler_fn)(void);
343extern void (*s390_base_ext_handler_fn)(void);
344
345/*
331 * CPU idle notifier chain. 346 * CPU idle notifier chain.
332 */ 347 */
333#define CPU_IDLE 0 348#define CPU_IDLE 0
diff --git a/include/asm-s390/ptrace.h b/include/asm-s390/ptrace.h
index 7b768c5c68a8..fa6ca87080e8 100644
--- a/include/asm-s390/ptrace.h
+++ b/include/asm-s390/ptrace.h
@@ -266,17 +266,12 @@ typedef struct
266#define PSW_ASC_SECONDARY 0x0000800000000000UL 266#define PSW_ASC_SECONDARY 0x0000800000000000UL
267#define PSW_ASC_HOME 0x0000C00000000000UL 267#define PSW_ASC_HOME 0x0000C00000000000UL
268 268
269#define PSW_USER32_BITS (PSW_BASE32_BITS | PSW_MASK_DAT | PSW_ASC_HOME | \ 269extern long psw_user32_bits;
270 PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK | \
271 PSW_MASK_PSTATE | PSW_DEFAULT_KEY)
272 270
273#endif /* __s390x__ */ 271#endif /* __s390x__ */
274 272
275#define PSW_KERNEL_BITS (PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_PRIMARY | \ 273extern long psw_kernel_bits;
276 PSW_MASK_MCHECK | PSW_DEFAULT_KEY) 274extern long psw_user_bits;
277#define PSW_USER_BITS (PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_HOME | \
278 PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK | \
279 PSW_MASK_PSTATE | PSW_DEFAULT_KEY)
280 275
281/* This macro merges a NEW PSW mask specified by the user into 276/* This macro merges a NEW PSW mask specified by the user into
282 the currently active PSW mask CURRENT, modifying only those 277 the currently active PSW mask CURRENT, modifying only those
diff --git a/include/asm-s390/reset.h b/include/asm-s390/reset.h
index 532e65a2aafc..f584f4a52581 100644
--- a/include/asm-s390/reset.h
+++ b/include/asm-s390/reset.h
@@ -18,7 +18,4 @@ struct reset_call {
18extern void register_reset_call(struct reset_call *reset); 18extern void register_reset_call(struct reset_call *reset);
19extern void unregister_reset_call(struct reset_call *reset); 19extern void unregister_reset_call(struct reset_call *reset);
20extern void s390_reset_system(void); 20extern void s390_reset_system(void);
21extern void (*s390_reset_mcck_handler)(void);
22extern void (*s390_reset_pgm_handler)(void);
23
24#endif /* _ASM_S390_RESET_H */ 21#endif /* _ASM_S390_RESET_H */
diff --git a/include/asm-s390/sclp.h b/include/asm-s390/sclp.h
new file mode 100644
index 000000000000..468b97018405
--- /dev/null
+++ b/include/asm-s390/sclp.h
@@ -0,0 +1,39 @@
1/*
2 * include/asm-s390/sclp.h
3 *
4 * Copyright IBM Corp. 2007
5 * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
6 */
7
8#ifndef _ASM_S390_SCLP_H
9#define _ASM_S390_SCLP_H
10
11#include <linux/types.h>
12
13struct sccb_header {
14 u16 length;
15 u8 function_code;
16 u8 control_mask[3];
17 u16 response_code;
18} __attribute__((packed));
19
20#define LOADPARM_LEN 8
21
22struct sclp_readinfo_sccb {
23 struct sccb_header header; /* 0-7 */
24 u16 rnmax; /* 8-9 */
25 u8 rnsize; /* 10 */
26 u8 _reserved0[24 - 11]; /* 11-23 */
27 u8 loadparm[LOADPARM_LEN]; /* 24-31 */
28 u8 _reserved1[91 - 32]; /* 32-90 */
29 u8 flags; /* 91 */
30 u8 _reserved2[100 - 92]; /* 92-99 */
31 u32 rnsize2; /* 100-103 */
32 u64 rnmax2; /* 104-111 */
33 u8 _reserved3[4096 - 112]; /* 112-4095 */
34} __attribute__((packed, aligned(4096)));
35
36extern struct sclp_readinfo_sccb s390_readinfo_sccb;
37extern void sclp_readinfo_early(void);
38
39#endif /* _ASM_S390_SCLP_H */
diff --git a/include/asm-s390/sections.h b/include/asm-s390/sections.h
index 3a0b8ffeab7a..1c5a2c4ccdad 100644
--- a/include/asm-s390/sections.h
+++ b/include/asm-s390/sections.h
@@ -3,4 +3,6 @@
3 3
4#include <asm-generic/sections.h> 4#include <asm-generic/sections.h>
5 5
6extern char _eshared[];
7
6#endif 8#endif
diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h
index 9574fe80a046..3388bb52597c 100644
--- a/include/asm-s390/setup.h
+++ b/include/asm-s390/setup.h
@@ -42,6 +42,18 @@ struct mem_chunk {
42 42
43extern struct mem_chunk memory_chunk[]; 43extern struct mem_chunk memory_chunk[];
44 44
45#ifdef CONFIG_S390_SWITCH_AMODE
46extern unsigned int switch_amode;
47#else
48#define switch_amode (0)
49#endif
50
51#ifdef CONFIG_S390_EXEC_PROTECT
52extern unsigned int s390_noexec;
53#else
54#define s390_noexec (0)
55#endif
56
45/* 57/*
46 * Machine features detected in head.S 58 * Machine features detected in head.S
47 */ 59 */
@@ -74,6 +86,9 @@ extern unsigned int console_mode;
74extern unsigned int console_devno; 86extern unsigned int console_devno;
75extern unsigned int console_irq; 87extern unsigned int console_irq;
76 88
89extern char vmhalt_cmd[];
90extern char vmpoff_cmd[];
91
77#define CONSOLE_IS_UNDEFINED (console_mode == 0) 92#define CONSOLE_IS_UNDEFINED (console_mode == 0)
78#define CONSOLE_IS_SCLP (console_mode == 1) 93#define CONSOLE_IS_SCLP (console_mode == 1)
79#define CONSOLE_IS_3215 (console_mode == 2) 94#define CONSOLE_IS_3215 (console_mode == 2)
@@ -141,13 +156,19 @@ struct ipl_parameter_block {
141extern u32 ipl_flags; 156extern u32 ipl_flags;
142extern u16 ipl_devno; 157extern u16 ipl_devno;
143 158
144void do_reipl(void); 159extern void do_reipl(void);
160extern void ipl_save_parameters(void);
145 161
146enum { 162enum {
147 IPL_DEVNO_VALID = 1, 163 IPL_DEVNO_VALID = 1,
148 IPL_PARMBLOCK_VALID = 2, 164 IPL_PARMBLOCK_VALID = 2,
165 IPL_NSS_VALID = 4,
149}; 166};
150 167
168#define NSS_NAME_SIZE 8
169
170extern char kernel_nss_name[];
171
151#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \ 172#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \
152 IPL_PARMBLOCK_ORIGIN) 173 IPL_PARMBLOCK_ORIGIN)
153#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len) 174#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len)
diff --git a/include/asm-s390/sfp-util.h b/include/asm-s390/sfp-util.h
new file mode 100644
index 000000000000..8cabcd23d976
--- /dev/null
+++ b/include/asm-s390/sfp-util.h
@@ -0,0 +1,66 @@
1#include <linux/kernel.h>
2#include <linux/sched.h>
3#include <linux/types.h>
4#include <asm/byteorder.h>
5
6#define add_ssaaaa(sh, sl, ah, al, bh, bl) ({ \
7 unsigned int __sh = (ah); \
8 unsigned int __sl = (al); \
9 asm volatile( \
10 " alr %1,%3\n" \
11 " brc 12,0f\n" \
12 " ahi %0,1\n" \
13 "0: alr %0,%2" \
14 : "+&d" (__sh), "+d" (__sl) \
15 : "d" (bh), "d" (bl) : "cc"); \
16 (sh) = __sh; \
17 (sl) = __sl; \
18})
19
20#define sub_ddmmss(sh, sl, ah, al, bh, bl) ({ \
21 unsigned int __sh = (ah); \
22 unsigned int __sl = (al); \
23 asm volatile( \
24 " slr %1,%3\n" \
25 " brc 3,0f\n" \
26 " ahi %0,-1\n" \
27 "0: slr %0,%2" \
28 : "+&d" (__sh), "+d" (__sl) \
29 : "d" (bh), "d" (bl) : "cc"); \
30 (sh) = __sh; \
31 (sl) = __sl; \
32})
33
34/* a umul b = a mul b + (a>=2<<31) ? b<<32:0 + (b>=2<<31) ? a<<32:0 */
35#define umul_ppmm(wh, wl, u, v) ({ \
36 unsigned int __wh = u; \
37 unsigned int __wl = v; \
38 asm volatile( \
39 " ltr 1,%0\n" \
40 " mr 0,%1\n" \
41 " jnm 0f\n" \
42 " alr 0,%1\n" \
43 "0: ltr %1,%1\n" \
44 " jnm 1f\n" \
45 " alr 0,%0\n" \
46 "1: lr %0,0\n" \
47 " lr %1,1\n" \
48 : "+d" (__wh), "+d" (__wl) \
49 : : "0", "1", "cc"); \
50 wh = __wh; \
51 wl = __wl; \
52})
53
54#define udiv_qrnnd(q, r, n1, n0, d) \
55 do { unsigned int __r; \
56 (q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); \
57 (r) = __r; \
58 } while (0)
59extern unsigned long __udiv_qrnnd (unsigned int *, unsigned int,
60 unsigned int , unsigned int);
61
62#define UDIV_NEEDS_NORMALIZATION 0
63
64#define abort() return 0
65
66#define __BYTE_ORDER __BIG_ENDIAN
diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h
index 7097c96ed026..b957e4cda464 100644
--- a/include/asm-s390/smp.h
+++ b/include/asm-s390/smp.h
@@ -31,6 +31,10 @@ typedef struct
31 __u16 cpu; 31 __u16 cpu;
32} sigp_info; 32} sigp_info;
33 33
34extern void machine_restart_smp(char *);
35extern void machine_halt_smp(void);
36extern void machine_power_off_smp(void);
37
34extern void smp_setup_cpu_possible_map(void); 38extern void smp_setup_cpu_possible_map(void);
35extern int smp_call_function_on(void (*func) (void *info), void *info, 39extern int smp_call_function_on(void (*func) (void *info), void *info,
36 int nonatomic, int wait, int cpu); 40 int nonatomic, int wait, int cpu);
@@ -106,7 +110,7 @@ smp_call_function_on(void (*func) (void *info), void *info,
106static inline void smp_send_stop(void) 110static inline void smp_send_stop(void)
107{ 111{
108 /* Disable all interrupts/machine checks */ 112 /* Disable all interrupts/machine checks */
109 __load_psw_mask(PSW_KERNEL_BITS & ~PSW_MASK_MCHECK); 113 __load_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK);
110} 114}
111 115
112#define smp_cpu_not_running(cpu) 1 116#define smp_cpu_not_running(cpu) 1
diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h
index bd0b05ae87d2..bbe137c3ed69 100644
--- a/include/asm-s390/system.h
+++ b/include/asm-s390/system.h
@@ -373,8 +373,8 @@ __set_psw_mask(unsigned long mask)
373 __load_psw_mask(mask | (__raw_local_irq_stosm(0x00) & ~(-1UL >> 8))); 373 __load_psw_mask(mask | (__raw_local_irq_stosm(0x00) & ~(-1UL >> 8)));
374} 374}
375 375
376#define local_mcck_enable() __set_psw_mask(PSW_KERNEL_BITS) 376#define local_mcck_enable() __set_psw_mask(psw_kernel_bits)
377#define local_mcck_disable() __set_psw_mask(PSW_KERNEL_BITS & ~PSW_MASK_MCHECK) 377#define local_mcck_disable() __set_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK)
378 378
379#ifdef CONFIG_SMP 379#ifdef CONFIG_SMP
380 380
diff --git a/include/asm-s390/tape390.h b/include/asm-s390/tape390.h
index f1d66ba0deef..884fba48f1ff 100644
--- a/include/asm-s390/tape390.h
+++ b/include/asm-s390/tape390.h
@@ -1,11 +1,11 @@
1/************************************************************************* 1/*************************************************************************
2 * 2 *
3 * tape390.h 3 * tape390.h
4 * enables user programs to display messages on the tape device 4 * enables user programs to display messages and control encryption
5 * on s390 tape devices
5 * 6 *
6 * S390 and zSeries version 7 * Copyright IBM Corp. 2001,2006
7 * Copyright (C) 2001 IBM Corporation 8 * Author(s): Michael Holzheu <holzheu@de.ibm.com>
8 * Author(s): Despina Papadopoulou <despina_p@de.ibm.com>
9 * 9 *
10 *************************************************************************/ 10 *************************************************************************/
11 11
@@ -36,4 +36,68 @@ typedef struct display_struct {
36 char message2[8]; 36 char message2[8];
37} display_struct; 37} display_struct;
38 38
39/*
40 * Tape encryption support
41 */
42
43struct tape390_crypt_info {
44 char capability;
45 char status;
46 char medium_status;
47} __attribute__ ((packed));
48
49
50/* Macros for "capable" field */
51#define TAPE390_CRYPT_SUPPORTED_MASK 0x01
52#define TAPE390_CRYPT_SUPPORTED(x) \
53 ((x.capability & TAPE390_CRYPT_SUPPORTED_MASK))
54
55/* Macros for "status" field */
56#define TAPE390_CRYPT_ON_MASK 0x01
57#define TAPE390_CRYPT_ON(x) (((x.status) & TAPE390_CRYPT_ON_MASK))
58
59/* Macros for "medium status" field */
60#define TAPE390_MEDIUM_LOADED_MASK 0x01
61#define TAPE390_MEDIUM_ENCRYPTED_MASK 0x02
62#define TAPE390_MEDIUM_ENCRYPTED(x) \
63 (((x.medium_status) & TAPE390_MEDIUM_ENCRYPTED_MASK))
64#define TAPE390_MEDIUM_LOADED(x) \
65 (((x.medium_status) & TAPE390_MEDIUM_LOADED_MASK))
66
67/*
68 * The TAPE390_CRYPT_SET ioctl is used to switch on/off encryption.
69 * The "encryption_capable" and "tape_status" fields are ignored for this ioctl!
70 */
71#define TAPE390_CRYPT_SET _IOW('d', 2, struct tape390_crypt_info)
72
73/*
74 * The TAPE390_CRYPT_QUERY ioctl is used to query the encryption state.
75 */
76#define TAPE390_CRYPT_QUERY _IOR('d', 3, struct tape390_crypt_info)
77
78/* Values for "kekl1/2_type" and "kekl1/2_type_on_tape" fields */
79#define TAPE390_KEKL_TYPE_NONE 0
80#define TAPE390_KEKL_TYPE_LABEL 1
81#define TAPE390_KEKL_TYPE_HASH 2
82
83struct tape390_kekl {
84 unsigned char type;
85 unsigned char type_on_tape;
86 char label[65];
87} __attribute__ ((packed));
88
89struct tape390_kekl_pair {
90 struct tape390_kekl kekl[2];
91} __attribute__ ((packed));
92
93/*
94 * The TAPE390_KEKL_SET ioctl is used to set Key Encrypting Key labels.
95 */
96#define TAPE390_KEKL_SET _IOW('d', 4, struct tape390_kekl_pair)
97
98/*
99 * The TAPE390_KEKL_QUERY ioctl is used to query Key Encrypting Key labels.
100 */
101#define TAPE390_KEKL_QUERY _IOR('d', 5, struct tape390_kekl_pair)
102
39#endif 103#endif
diff --git a/include/asm-s390/timer.h b/include/asm-s390/timer.h
index 30e5cbe570f2..adb34860a543 100644
--- a/include/asm-s390/timer.h
+++ b/include/asm-s390/timer.h
@@ -45,6 +45,9 @@ extern void add_virt_timer_periodic(void *new);
45extern int mod_virt_timer(struct vtimer_list *timer, __u64 expires); 45extern int mod_virt_timer(struct vtimer_list *timer, __u64 expires);
46extern int del_virt_timer(struct vtimer_list *timer); 46extern int del_virt_timer(struct vtimer_list *timer);
47 47
48extern void init_cpu_vtimer(void);
49extern void vtime_init(void);
50
48#endif /* __KERNEL__ */ 51#endif /* __KERNEL__ */
49 52
50#endif /* _ASM_S390_TIMER_H */ 53#endif /* _ASM_S390_TIMER_H */
diff --git a/include/asm-s390/timex.h b/include/asm-s390/timex.h
index 4df4a41029a3..98229db24314 100644
--- a/include/asm-s390/timex.h
+++ b/include/asm-s390/timex.h
@@ -11,6 +11,41 @@
11#ifndef _ASM_S390_TIMEX_H 11#ifndef _ASM_S390_TIMEX_H
12#define _ASM_S390_TIMEX_H 12#define _ASM_S390_TIMEX_H
13 13
14/* Inline functions for clock register access. */
15static inline int set_clock(__u64 time)
16{
17 int cc;
18
19 asm volatile(
20 " sck 0(%2)\n"
21 " ipm %0\n"
22 " srl %0,28\n"
23 : "=d" (cc) : "m" (time), "a" (&time) : "cc");
24 return cc;
25}
26
27static inline int store_clock(__u64 *time)
28{
29 int cc;
30
31 asm volatile(
32 " stck 0(%2)\n"
33 " ipm %0\n"
34 " srl %0,28\n"
35 : "=d" (cc), "=m" (*time) : "a" (time) : "cc");
36 return cc;
37}
38
39static inline void set_clock_comparator(__u64 time)
40{
41 asm volatile("sckc 0(%1)" : : "m" (time), "a" (&time));
42}
43
44static inline void store_clock_comparator(__u64 *time)
45{
46 asm volatile("stckc 0(%1)" : "=m" (*time) : "a" (time));
47}
48
14#define CLOCK_TICK_RATE 1193180 /* Underlying HZ */ 49#define CLOCK_TICK_RATE 1193180 /* Underlying HZ */
15 50
16typedef unsigned long long cycles_t; 51typedef unsigned long long cycles_t;
@@ -27,9 +62,24 @@ static inline unsigned long long get_clock (void)
27 return clk; 62 return clk;
28} 63}
29 64
65static inline void get_clock_extended(void *dest)
66{
67 typedef struct { unsigned long long clk[2]; } __clock_t;
68
69#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
70 asm volatile("stcke %0" : "=Q" (*((__clock_t *)dest)) : : "cc");
71#else /* __GNUC__ */
72 asm volatile("stcke 0(%1)" : "=m" (*((__clock_t *)dest))
73 : "a" ((__clock_t *)dest) : "cc");
74#endif /* __GNUC__ */
75}
76
30static inline cycles_t get_cycles(void) 77static inline cycles_t get_cycles(void)
31{ 78{
32 return (cycles_t) get_clock() >> 2; 79 return (cycles_t) get_clock() >> 2;
33} 80}
34 81
82int get_sync_clock(unsigned long long *clock);
83void init_cpu_timer(void);
84
35#endif 85#endif
diff --git a/include/asm-s390/tlbflush.h b/include/asm-s390/tlbflush.h
index fa4dc916a9bf..66793f55c8b2 100644
--- a/include/asm-s390/tlbflush.h
+++ b/include/asm-s390/tlbflush.h
@@ -3,6 +3,7 @@
3 3
4#include <linux/mm.h> 4#include <linux/mm.h>
5#include <asm/processor.h> 5#include <asm/processor.h>
6#include <asm/pgalloc.h>
6 7
7/* 8/*
8 * TLB flushing: 9 * TLB flushing:
@@ -102,6 +103,14 @@ static inline void __flush_tlb_mm(struct mm_struct * mm)
102 if (unlikely(cpus_empty(mm->cpu_vm_mask))) 103 if (unlikely(cpus_empty(mm->cpu_vm_mask)))
103 return; 104 return;
104 if (MACHINE_HAS_IDTE) { 105 if (MACHINE_HAS_IDTE) {
106 pgd_t *shadow_pgd = get_shadow_pgd(mm->pgd);
107
108 if (shadow_pgd) {
109 asm volatile(
110 " .insn rrf,0xb98e0000,0,%0,%1,0"
111 : : "a" (2048),
112 "a" (__pa(shadow_pgd) & PAGE_MASK) : "cc" );
113 }
105 asm volatile( 114 asm volatile(
106 " .insn rrf,0xb98e0000,0,%0,%1,0" 115 " .insn rrf,0xb98e0000,0,%0,%1,0"
107 : : "a" (2048), "a" (__pa(mm->pgd)&PAGE_MASK) : "cc"); 116 : : "a" (2048), "a" (__pa(mm->pgd)&PAGE_MASK) : "cc");
diff --git a/include/asm-s390/uaccess.h b/include/asm-s390/uaccess.h
index 73ac4e82217b..0235970278f0 100644
--- a/include/asm-s390/uaccess.h
+++ b/include/asm-s390/uaccess.h
@@ -90,6 +90,8 @@ struct uaccess_ops {
90extern struct uaccess_ops uaccess; 90extern struct uaccess_ops uaccess;
91extern struct uaccess_ops uaccess_std; 91extern struct uaccess_ops uaccess_std;
92extern struct uaccess_ops uaccess_mvcos; 92extern struct uaccess_ops uaccess_mvcos;
93extern struct uaccess_ops uaccess_mvcos_switch;
94extern struct uaccess_ops uaccess_pt;
93 95
94static inline int __put_user_fn(size_t size, void __user *ptr, void *x) 96static inline int __put_user_fn(size_t size, void __user *ptr, void *x)
95{ 97{
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-18 06:30:03 -0500