Commit | Line | Data |
---|---|---|
0a87c5cf MH |
1 | /* |
2 | * Implementation of s390 diagnose codes | |
3 | * | |
4 | * Copyright IBM Corp. 2007 | |
5 | * Author(s): Michael Holzheu <holzheu@de.ibm.com> | |
6 | */ | |
7 | ||
8 | #include <linux/module.h> | |
9 | #include <asm/diag.h> | |
10 | ||
11 | /* | |
12 | * Diagnose 10: Release pages | |
13 | */ | |
14 | void diag10(unsigned long addr) | |
15 | { | |
16 | if (addr >= 0x7ff00000) | |
17 | return; | |
18 | asm volatile( | |
19 | #ifdef CONFIG_64BIT | |
20 | " sam31\n" | |
21 | " diag %0,%0,0x10\n" | |
22 | "0: sam64\n" | |
23 | #else | |
24 | " diag %0,%0,0x10\n" | |
25 | "0:\n" | |
26 | #endif | |
27 | EX_TABLE(0b, 0b) | |
28 | : : "a" (addr)); | |
29 | } | |
30 | EXPORT_SYMBOL(diag10); | |
31 | ||
32 | /* | |
33 | * Diagnose 14: Input spool file manipulation | |
34 | */ | |
35 | int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode) | |
36 | { | |
37 | register unsigned long _ry1 asm("2") = ry1; | |
38 | register unsigned long _ry2 asm("3") = subcode; | |
39 | int rc = 0; | |
40 | ||
41 | asm volatile( | |
42 | #ifdef CONFIG_64BIT | |
43 | " sam31\n" | |
44 | " diag %2,2,0x14\n" | |
45 | " sam64\n" | |
46 | #else | |
47 | " diag %2,2,0x14\n" | |
48 | #endif | |
49 | " ipm %0\n" | |
50 | " srl %0,28\n" | |
51 | : "=d" (rc), "+d" (_ry2) | |
52 | : "d" (rx), "d" (_ry1) | |
53 | : "cc"); | |
54 | ||
55 | return rc; | |
56 | } | |
57 | EXPORT_SYMBOL(diag14); | |
58 | ||
59 | /* | |
60 | * Diagnose 210: Get information about a virtual device | |
61 | */ | |
62 | int diag210(struct diag210 *addr) | |
63 | { | |
64 | /* | |
65 | * diag 210 needs its data below the 2GB border, so we | |
66 | * use a static data area to be sure | |
67 | */ | |
68 | static struct diag210 diag210_tmp; | |
69 | static DEFINE_SPINLOCK(diag210_lock); | |
70 | unsigned long flags; | |
71 | int ccode; | |
72 | ||
73 | spin_lock_irqsave(&diag210_lock, flags); | |
74 | diag210_tmp = *addr; | |
75 | ||
76 | #ifdef CONFIG_64BIT | |
77 | asm volatile( | |
78 | " lhi %0,-1\n" | |
79 | " sam31\n" | |
80 | " diag %1,0,0x210\n" | |
81 | "0: ipm %0\n" | |
82 | " srl %0,28\n" | |
83 | "1: sam64\n" | |
84 | EX_TABLE(0b, 1b) | |
85 | : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory"); | |
86 | #else | |
87 | asm volatile( | |
88 | " lhi %0,-1\n" | |
89 | " diag %1,0,0x210\n" | |
90 | "0: ipm %0\n" | |
91 | " srl %0,28\n" | |
92 | "1:\n" | |
93 | EX_TABLE(0b, 1b) | |
94 | : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory"); | |
95 | #endif | |
96 | ||
97 | *addr = diag210_tmp; | |
98 | spin_unlock_irqrestore(&diag210_lock, flags); | |
99 | ||
100 | return ccode; | |
101 | } | |
102 | EXPORT_SYMBOL(diag210); |