mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 18:11:56 +00:00
f694bb3a36
Get rid of common response code handling. Each command requires its own response code handling anyway. Also the retry in case of -EBUSY does not work and can be simply removed. Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
303 lines
8.6 KiB
C
303 lines
8.6 KiB
C
/*
|
|
* Copyright IBM Corp. 1999,2012
|
|
*
|
|
* Author(s): Martin Peschke <mpeschke@de.ibm.com>
|
|
* Martin Schwidefsky <schwidefsky@de.ibm.com>
|
|
*/
|
|
|
|
#ifndef __SCLP_H__
|
|
#define __SCLP_H__
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
#include <asm/sclp.h>
|
|
#include <asm/ebcdic.h>
|
|
|
|
/* maximum number of pages concerning our own memory management */
|
|
#define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
|
|
#define SCLP_CONSOLE_PAGES 6
|
|
|
|
#define SCLP_EVTYP_MASK(T) (1U << (32 - (T)))
|
|
|
|
#define EVTYP_OPCMD 0x01
|
|
#define EVTYP_MSG 0x02
|
|
#define EVTYP_CONFMGMDATA 0x04
|
|
#define EVTYP_DIAG_TEST 0x07
|
|
#define EVTYP_STATECHANGE 0x08
|
|
#define EVTYP_PMSGCMD 0x09
|
|
#define EVTYP_ASYNC 0x0A
|
|
#define EVTYP_CTLPROGIDENT 0x0B
|
|
#define EVTYP_ERRNOTIFY 0x18
|
|
#define EVTYP_VT220MSG 0x1A
|
|
#define EVTYP_SDIAS 0x1C
|
|
#define EVTYP_SIGQUIESCE 0x1D
|
|
#define EVTYP_OCF 0x1E
|
|
|
|
#define EVTYP_OPCMD_MASK SCLP_EVTYP_MASK(EVTYP_OPCMD)
|
|
#define EVTYP_MSG_MASK SCLP_EVTYP_MASK(EVTYP_MSG)
|
|
#define EVTYP_CONFMGMDATA_MASK SCLP_EVTYP_MASK(EVTYP_CONFMGMDATA)
|
|
#define EVTYP_DIAG_TEST_MASK SCLP_EVTYP_MASK(EVTYP_DIAG_TEST)
|
|
#define EVTYP_STATECHANGE_MASK SCLP_EVTYP_MASK(EVTYP_STATECHANGE)
|
|
#define EVTYP_PMSGCMD_MASK SCLP_EVTYP_MASK(EVTYP_PMSGCMD)
|
|
#define EVTYP_ASYNC_MASK SCLP_EVTYP_MASK(EVTYP_ASYNC)
|
|
#define EVTYP_CTLPROGIDENT_MASK SCLP_EVTYP_MASK(EVTYP_CTLPROGIDENT)
|
|
#define EVTYP_ERRNOTIFY_MASK SCLP_EVTYP_MASK(EVTYP_ERRNOTIFY)
|
|
#define EVTYP_VT220MSG_MASK SCLP_EVTYP_MASK(EVTYP_VT220MSG)
|
|
#define EVTYP_SDIAS_MASK SCLP_EVTYP_MASK(EVTYP_SDIAS)
|
|
#define EVTYP_SIGQUIESCE_MASK SCLP_EVTYP_MASK(EVTYP_SIGQUIESCE)
|
|
#define EVTYP_OCF_MASK SCLP_EVTYP_MASK(EVTYP_OCF)
|
|
|
|
#define GNRLMSGFLGS_DOM 0x8000
|
|
#define GNRLMSGFLGS_SNDALRM 0x4000
|
|
#define GNRLMSGFLGS_HOLDMSG 0x2000
|
|
|
|
#define LNTPFLGS_CNTLTEXT 0x8000
|
|
#define LNTPFLGS_LABELTEXT 0x4000
|
|
#define LNTPFLGS_DATATEXT 0x2000
|
|
#define LNTPFLGS_ENDTEXT 0x1000
|
|
#define LNTPFLGS_PROMPTTEXT 0x0800
|
|
|
|
typedef unsigned int sclp_cmdw_t;
|
|
|
|
#define SCLP_CMDW_READ_CPU_INFO 0x00010001
|
|
#define SCLP_CMDW_READ_EVENT_DATA 0x00770005
|
|
#define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005
|
|
#define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005
|
|
|
|
#define GDS_ID_MDSMU 0x1310
|
|
#define GDS_ID_MDSROUTEINFO 0x1311
|
|
#define GDS_ID_AGUNWRKCORR 0x1549
|
|
#define GDS_ID_SNACONDREPORT 0x1532
|
|
#define GDS_ID_CPMSU 0x1212
|
|
#define GDS_ID_ROUTTARGINSTR 0x154D
|
|
#define GDS_ID_OPREQ 0x8070
|
|
#define GDS_ID_TEXTCMD 0x1320
|
|
|
|
#define GDS_KEY_SELFDEFTEXTMSG 0x31
|
|
|
|
enum sclp_pm_event {
|
|
SCLP_PM_EVENT_FREEZE,
|
|
SCLP_PM_EVENT_THAW,
|
|
SCLP_PM_EVENT_RESTORE,
|
|
};
|
|
|
|
#define SCLP_PANIC_PRIO 1
|
|
#define SCLP_PANIC_PRIO_CLIENT 0
|
|
|
|
typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */
|
|
|
|
struct sccb_header {
|
|
u16 length;
|
|
u8 function_code;
|
|
u8 control_mask[3];
|
|
u16 response_code;
|
|
} __attribute__((packed));
|
|
|
|
struct init_sccb {
|
|
struct sccb_header header;
|
|
u16 _reserved;
|
|
u16 mask_length;
|
|
sccb_mask_t receive_mask;
|
|
sccb_mask_t send_mask;
|
|
sccb_mask_t sclp_receive_mask;
|
|
sccb_mask_t sclp_send_mask;
|
|
} __attribute__((packed));
|
|
|
|
struct read_cpu_info_sccb {
|
|
struct sccb_header header;
|
|
u16 nr_configured;
|
|
u16 offset_configured;
|
|
u16 nr_standby;
|
|
u16 offset_standby;
|
|
u8 reserved[4096 - 16];
|
|
} __attribute__((packed, aligned(PAGE_SIZE)));
|
|
|
|
static inline void sclp_fill_core_info(struct sclp_core_info *info,
|
|
struct read_cpu_info_sccb *sccb)
|
|
{
|
|
char *page = (char *) sccb;
|
|
|
|
memset(info, 0, sizeof(*info));
|
|
info->configured = sccb->nr_configured;
|
|
info->standby = sccb->nr_standby;
|
|
info->combined = sccb->nr_configured + sccb->nr_standby;
|
|
memcpy(&info->core, page + sccb->offset_configured,
|
|
info->combined * sizeof(struct sclp_core_entry));
|
|
}
|
|
|
|
#define SCLP_HAS_CHP_INFO (sclp.facilities & 0x8000000000000000ULL)
|
|
#define SCLP_HAS_CHP_RECONFIG (sclp.facilities & 0x2000000000000000ULL)
|
|
#define SCLP_HAS_CPU_INFO (sclp.facilities & 0x0800000000000000ULL)
|
|
#define SCLP_HAS_CPU_RECONFIG (sclp.facilities & 0x0400000000000000ULL)
|
|
#define SCLP_HAS_PCI_RECONFIG (sclp.facilities & 0x0000000040000000ULL)
|
|
|
|
|
|
struct gds_subvector {
|
|
u8 length;
|
|
u8 key;
|
|
} __attribute__((packed));
|
|
|
|
struct gds_vector {
|
|
u16 length;
|
|
u16 gds_id;
|
|
} __attribute__((packed));
|
|
|
|
struct evbuf_header {
|
|
u16 length;
|
|
u8 type;
|
|
u8 flags;
|
|
u16 _reserved;
|
|
} __attribute__((packed));
|
|
|
|
struct sclp_req {
|
|
struct list_head list; /* list_head for request queueing. */
|
|
sclp_cmdw_t command; /* sclp command to execute */
|
|
void *sccb; /* pointer to the sccb to execute */
|
|
char status; /* status of this request */
|
|
int start_count; /* number of SVCs done for this req */
|
|
/* Callback that is called after reaching final status. */
|
|
void (*callback)(struct sclp_req *, void *data);
|
|
void *callback_data;
|
|
int queue_timeout; /* request queue timeout (sec), set by
|
|
caller of sclp_add_request(), if
|
|
needed */
|
|
/* Internal fields */
|
|
unsigned long queue_expires; /* request queue timeout (jiffies) */
|
|
};
|
|
|
|
#define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */
|
|
#define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */
|
|
#define SCLP_REQ_RUNNING 0x02 /* request is currently running */
|
|
#define SCLP_REQ_DONE 0x03 /* request is completed successfully */
|
|
#define SCLP_REQ_FAILED 0x05 /* request is finally failed */
|
|
#define SCLP_REQ_QUEUED_TIMEOUT 0x06 /* request on queue timed out */
|
|
|
|
#define SCLP_QUEUE_INTERVAL 5 /* timeout interval for request queue */
|
|
|
|
/* function pointers that a high level driver has to use for registration */
|
|
/* of some routines it wants to be called from the low level driver */
|
|
struct sclp_register {
|
|
struct list_head list;
|
|
/* User wants to receive: */
|
|
sccb_mask_t receive_mask;
|
|
/* User wants to send: */
|
|
sccb_mask_t send_mask;
|
|
/* H/W can receive: */
|
|
sccb_mask_t sclp_receive_mask;
|
|
/* H/W can send: */
|
|
sccb_mask_t sclp_send_mask;
|
|
/* called if event type availability changes */
|
|
void (*state_change_fn)(struct sclp_register *);
|
|
/* called for events in cp_receive_mask/sclp_receive_mask */
|
|
void (*receiver_fn)(struct evbuf_header *);
|
|
/* called for power management events */
|
|
void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event);
|
|
/* pm event posted flag */
|
|
int pm_event_posted;
|
|
};
|
|
|
|
/* externals from sclp.c */
|
|
int sclp_add_request(struct sclp_req *req);
|
|
void sclp_sync_wait(void);
|
|
int sclp_register(struct sclp_register *reg);
|
|
void sclp_unregister(struct sclp_register *reg);
|
|
int sclp_remove_processed(struct sccb_header *sccb);
|
|
int sclp_deactivate(void);
|
|
int sclp_reactivate(void);
|
|
int sclp_sync_request(sclp_cmdw_t command, void *sccb);
|
|
int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout);
|
|
|
|
int sclp_sdias_init(void);
|
|
void sclp_sdias_exit(void);
|
|
|
|
enum {
|
|
sclp_init_state_uninitialized,
|
|
sclp_init_state_initializing,
|
|
sclp_init_state_initialized
|
|
};
|
|
|
|
extern int sclp_init_state;
|
|
extern int sclp_console_pages;
|
|
extern int sclp_console_drop;
|
|
extern unsigned long sclp_console_full;
|
|
|
|
extern char sclp_early_sccb[PAGE_SIZE];
|
|
|
|
void sclp_early_wait_irq(void);
|
|
int sclp_early_cmd(sclp_cmdw_t cmd, void *sccb);
|
|
unsigned int sclp_early_con_check_linemode(struct init_sccb *sccb);
|
|
int sclp_early_set_event_mask(struct init_sccb *sccb,
|
|
unsigned long receive_mask,
|
|
unsigned long send_mask);
|
|
|
|
/* useful inlines */
|
|
|
|
/* Perform service call. Return 0 on success, non-zero otherwise. */
|
|
static inline int sclp_service_call(sclp_cmdw_t command, void *sccb)
|
|
{
|
|
int cc = 4; /* Initialize for program check handling */
|
|
|
|
asm volatile(
|
|
"0: .insn rre,0xb2200000,%1,%2\n" /* servc %1,%2 */
|
|
"1: ipm %0\n"
|
|
" srl %0,28\n"
|
|
"2:\n"
|
|
EX_TABLE(0b, 2b)
|
|
EX_TABLE(1b, 2b)
|
|
: "+&d" (cc) : "d" (command), "a" ((unsigned long)sccb)
|
|
: "cc", "memory");
|
|
if (cc == 4)
|
|
return -EINVAL;
|
|
if (cc == 3)
|
|
return -EIO;
|
|
if (cc == 2)
|
|
return -EBUSY;
|
|
return 0;
|
|
}
|
|
|
|
/* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
|
|
/* translate single character from ASCII to EBCDIC */
|
|
static inline unsigned char
|
|
sclp_ascebc(unsigned char ch)
|
|
{
|
|
return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
|
|
}
|
|
|
|
/* translate string from EBCDIC to ASCII */
|
|
static inline void
|
|
sclp_ebcasc_str(unsigned char *str, int nr)
|
|
{
|
|
(MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
|
|
}
|
|
|
|
/* translate string from ASCII to EBCDIC */
|
|
static inline void
|
|
sclp_ascebc_str(unsigned char *str, int nr)
|
|
{
|
|
(MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
|
|
}
|
|
|
|
static inline struct gds_vector *
|
|
sclp_find_gds_vector(void *start, void *end, u16 id)
|
|
{
|
|
struct gds_vector *v;
|
|
|
|
for (v = start; (void *) v < end; v = (void *) v + v->length)
|
|
if (v->gds_id == id)
|
|
return v;
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct gds_subvector *
|
|
sclp_find_gds_subvector(void *start, void *end, u8 key)
|
|
{
|
|
struct gds_subvector *sv;
|
|
|
|
for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length)
|
|
if (sv->key == key)
|
|
return sv;
|
|
return NULL;
|
|
}
|
|
|
|
#endif /* __SCLP_H__ */
|