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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( | |
0a87c5cf MH |
21 | " sam31\n" |
22 | " diag %2,2,0x14\n" | |
23 | " sam64\n" | |
0a87c5cf MH |
24 | " ipm %0\n" |
25 | " srl %0,28\n" | |
26 | : "=d" (rc), "+d" (_ry2) | |
27 | : "d" (rx), "d" (_ry1) | |
28 | : "cc"); | |
29 | ||
30 | return rc; | |
31 | } | |
32 | EXPORT_SYMBOL(diag14); | |
33 | ||
34 | /* | |
35 | * Diagnose 210: Get information about a virtual device | |
36 | */ | |
37 | int diag210(struct diag210 *addr) | |
38 | { | |
39 | /* | |
40 | * diag 210 needs its data below the 2GB border, so we | |
41 | * use a static data area to be sure | |
42 | */ | |
43 | static struct diag210 diag210_tmp; | |
44 | static DEFINE_SPINLOCK(diag210_lock); | |
45 | unsigned long flags; | |
46 | int ccode; | |
47 | ||
48 | spin_lock_irqsave(&diag210_lock, flags); | |
49 | diag210_tmp = *addr; | |
50 | ||
0a87c5cf MH |
51 | asm volatile( |
52 | " lhi %0,-1\n" | |
53 | " sam31\n" | |
54 | " diag %1,0,0x210\n" | |
55 | "0: ipm %0\n" | |
56 | " srl %0,28\n" | |
57 | "1: sam64\n" | |
58 | EX_TABLE(0b, 1b) | |
59 | : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory"); | |
0a87c5cf MH |
60 | |
61 | *addr = diag210_tmp; | |
62 | spin_unlock_irqrestore(&diag210_lock, flags); | |
63 | ||
64 | return ccode; | |
65 | } | |
66 | EXPORT_SYMBOL(diag210); |