mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 03:26:50 +07:00
fb6958a594
Add support for multiple subchannel sets. Works with arbitrary devices in subchannel set 1 and is transparent to device drivers. Although currently only two subchannel sets are available, this will work with the architectured maximum number of subchannel sets as well. Signed-off-by: Cornelia Huck <cohuck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
74 lines
1.4 KiB
C
74 lines
1.4 KiB
C
#ifndef S390_CHSC_H
|
|
#define S390_CHSC_H
|
|
|
|
#define CHSC_SEI_ACC_CHPID 1
|
|
#define CHSC_SEI_ACC_LINKADDR 2
|
|
#define CHSC_SEI_ACC_FULLLINKADDR 3
|
|
|
|
#define CHSC_SDA_OC_MSS 0x2
|
|
|
|
struct chsc_header {
|
|
u16 length;
|
|
u16 code;
|
|
};
|
|
|
|
struct channel_path_desc {
|
|
u8 flags;
|
|
u8 lsn;
|
|
u8 desc;
|
|
u8 chpid;
|
|
u8 swla;
|
|
u8 zeroes;
|
|
u8 chla;
|
|
u8 chpp;
|
|
};
|
|
|
|
struct channel_path {
|
|
int id;
|
|
int state;
|
|
struct channel_path_desc desc;
|
|
struct device dev;
|
|
};
|
|
|
|
extern void s390_process_css( void );
|
|
extern void chsc_validate_chpids(struct subchannel *);
|
|
extern void chpid_is_actually_online(int);
|
|
|
|
struct css_general_char {
|
|
u64 : 41;
|
|
u32 aif : 1; /* bit 41 */
|
|
u32 : 3;
|
|
u32 mcss : 1; /* bit 45 */
|
|
u32 : 2;
|
|
u32 ext_mb : 1; /* bit 48 */
|
|
u32 : 7;
|
|
u32 aif_tdd : 1; /* bit 56 */
|
|
u32 : 1;
|
|
u32 qebsm : 1; /* bit 58 */
|
|
u32 : 8;
|
|
u32 aif_osa : 1; /* bit 67 */
|
|
u32 : 28;
|
|
}__attribute__((packed));
|
|
|
|
struct css_chsc_char {
|
|
u64 res;
|
|
u64 : 43;
|
|
u32 scssc : 1; /* bit 107 */
|
|
u32 scsscf : 1; /* bit 108 */
|
|
u32 : 19;
|
|
}__attribute__((packed));
|
|
|
|
extern struct css_general_char css_general_characteristics;
|
|
extern struct css_chsc_char css_chsc_characteristics;
|
|
|
|
extern int chsc_determine_css_characteristics(void);
|
|
extern int css_characteristics_avail;
|
|
|
|
extern void *chsc_get_chp_desc(struct subchannel*, int);
|
|
|
|
extern int chsc_enable_facility(int);
|
|
|
|
#define to_channelpath(dev) container_of(dev, struct channel_path, dev)
|
|
|
|
#endif
|