1 /*
2 * s390 diagnose functions
3 *
4 * Copyright IBM Corp. 2007
5 * Author(s): Michael Holzheu <holzheu@de.ibm.com>
6 */
7
8 #ifndef _ASM_S390_DIAG_H
9 #define _ASM_S390_DIAG_H
10
11 /*
12 * Diagnose 10: Release page range
13 */
diag10_range(unsigned long start_pfn,unsigned long num_pfn)14 static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn)
15 {
16 unsigned long start_addr, end_addr;
17
18 start_addr = start_pfn << PAGE_SHIFT;
19 end_addr = (start_pfn + num_pfn - 1) << PAGE_SHIFT;
20
21 asm volatile(
22 "0: diag %0,%1,0x10\n"
23 "1:\n"
24 EX_TABLE(0b, 1b)
25 EX_TABLE(1b, 1b)
26 : : "a" (start_addr), "a" (end_addr));
27 }
28
29 /*
30 * Diagnose 14: Input spool file manipulation
31 */
32 extern int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode);
33
34 /*
35 * Diagnose 210: Get information about a virtual device
36 */
37 struct diag210 {
38 u16 vrdcdvno; /* device number (input) */
39 u16 vrdclen; /* data block length (input) */
40 u8 vrdcvcla; /* virtual device class (output) */
41 u8 vrdcvtyp; /* virtual device type (output) */
42 u8 vrdcvsta; /* virtual device status (output) */
43 u8 vrdcvfla; /* virtual device flags (output) */
44 u8 vrdcrccl; /* real device class (output) */
45 u8 vrdccrty; /* real device type (output) */
46 u8 vrdccrmd; /* real device model (output) */
47 u8 vrdccrft; /* real device feature (output) */
48 } __attribute__((packed, aligned(4)));
49
50 extern int diag210(struct diag210 *addr);
51
52 #endif /* _ASM_S390_DIAG_H */
53