Commit | Line | Data |
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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 | ||
0a87c5cf MH |
11 | /* |
12 | * Diagnose 14: Input spool file manipulation | |
13 | */ | |
14 | int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode) | |
15 | { | |
16 | register unsigned long _ry1 asm("2") = ry1; | |
17 | register unsigned long _ry2 asm("3") = subcode; | |
18 | int rc = 0; | |
19 | ||
20 | asm volatile( | |
21 | #ifdef CONFIG_64BIT | |
22 | " sam31\n" | |
23 | " diag %2,2,0x14\n" | |
24 | " sam64\n" | |
25 | #else | |
26 | " diag %2,2,0x14\n" | |
27 | #endif | |
28 | " ipm %0\n" | |
29 | " srl %0,28\n" | |
30 | : "=d" (rc), "+d" (_ry2) | |
31 | : "d" (rx), "d" (_ry1) | |
32 | : "cc"); | |
33 | ||
34 | return rc; | |
35 | } | |
36 | EXPORT_SYMBOL(diag14); | |
37 | ||
38 | /* | |
39 | * Diagnose 210: Get information about a virtual device | |
40 | */ | |
41 | int diag210(struct diag210 *addr) | |
42 | { | |
43 | /* | |
44 | * diag 210 needs its data below the 2GB border, so we | |
45 | * use a static data area to be sure | |
46 | */ | |
47 | static struct diag210 diag210_tmp; | |
48 | static DEFINE_SPINLOCK(diag210_lock); | |
49 | unsigned long flags; | |
50 | int ccode; | |
51 | ||
52 | spin_lock_irqsave(&diag210_lock, flags); | |
53 | diag210_tmp = *addr; | |
54 | ||
55 | #ifdef CONFIG_64BIT | |
56 | asm volatile( | |
57 | " lhi %0,-1\n" | |
58 | " sam31\n" | |
59 | " diag %1,0,0x210\n" | |
60 | "0: ipm %0\n" | |
61 | " srl %0,28\n" | |
62 | "1: sam64\n" | |
63 | EX_TABLE(0b, 1b) | |
64 | : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory"); | |
65 | #else | |
66 | asm volatile( | |
67 | " lhi %0,-1\n" | |
68 | " diag %1,0,0x210\n" | |
69 | "0: ipm %0\n" | |
70 | " srl %0,28\n" | |
71 | "1:\n" | |
72 | EX_TABLE(0b, 1b) | |
73 | : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory"); | |
74 | #endif | |
75 | ||
76 | *addr = diag210_tmp; | |
77 | spin_unlock_irqrestore(&diag210_lock, flags); | |
78 | ||
79 | return ccode; | |
80 | } | |
81 | EXPORT_SYMBOL(diag210); |