blob: 7d5232b65c5e5241fd8a396b1510b89efbfe01e0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/*
* File...........: linux/include/asm-s390x/idals.h
* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
* Bugreports.to..: <Linux390@de.ibm.com>
* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000a
* History of changes
* 07/24/00 new file
*/
#include <linux/config.h>
#include <asm/irq.h>
typedef unsigned long idaw_t;
static inline idaw_t *
idal_alloc ( int nridaws )
{
if ( nridaws > 33 )
BUG();
return kmalloc(nridaws * sizeof(idaw_t), GFP_ATOMIC | GFP_DMA );
}
static inline void
idal_free ( idaw_t *idal )
{
kfree (idal);
}
/*
* Function: set_normalized_cda
* sets the address of the data in CCW
* if necessary it allocates an IDAL and sets sthe appropriate flags
*/
#if defined (CONFIG_ARCH_S390X)
extern void set_normalized_cda(ccw1_t * ccw, unsigned long address);
#else
static inline void
set_normalized_cda(ccw1_t * ccw, unsigned long address)
{
ccw->cda = address;
}
#endif
/*
* Function: clear_normalized_cda
* releases any allocated IDAL related to the CCW
*/
static inline void
clear_normalized_cda ( ccw1_t * ccw )
{
if ( ccw -> flags & CCW_FLAG_IDA ) {
idal_free ( (idaw_t *) (ccw -> cda ));
ccw -> flags &= ~CCW_FLAG_IDA;
}
ccw -> cda = 0;
}
|
