393 lines
11 KiB
C
393 lines
11 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* 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/asm-extable.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) (1UL << (sizeof(sccb_mask_t) * BITS_PER_BYTE - (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_STORE_DATA 0x0C
|
|
#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_STORE_DATA_MASK SCLP_EVTYP_MASK(EVTYP_STORE_DATA)
|
|
#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_SCP_INFO 0x00020001
|
|
#define SCLP_CMDW_READ_STORAGE_INFO 0x00040001
|
|
#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
|
|
#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
|
|
|
|
typedef u64 sccb_mask_t;
|
|
|
|
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;
|
|
u8 masks[4 * 1021]; /* variable length */
|
|
/*
|
|
* u8 receive_mask[mask_length];
|
|
* u8 send_mask[mask_length];
|
|
* u8 sclp_receive_mask[mask_length];
|
|
* u8 sclp_send_mask[mask_length];
|
|
*/
|
|
} __attribute__((packed));
|
|
|
|
#define SCLP_MASK_SIZE_COMPAT 4
|
|
|
|
static inline sccb_mask_t sccb_get_mask(u8 *masks, size_t len, int i)
|
|
{
|
|
sccb_mask_t res = 0;
|
|
|
|
memcpy(&res, masks + i * len, min(sizeof(res), len));
|
|
return res;
|
|
}
|
|
|
|
static inline void sccb_set_mask(u8 *masks, size_t len, int i, sccb_mask_t val)
|
|
{
|
|
memset(masks + i * len, 0, len);
|
|
memcpy(masks + i * len, &val, min(sizeof(val), len));
|
|
}
|
|
|
|
#define sccb_get_generic_mask(sccb, i) \
|
|
({ \
|
|
__typeof__(sccb) __sccb = sccb; \
|
|
\
|
|
sccb_get_mask(__sccb->masks, __sccb->mask_length, i); \
|
|
})
|
|
#define sccb_get_recv_mask(sccb) sccb_get_generic_mask(sccb, 0)
|
|
#define sccb_get_send_mask(sccb) sccb_get_generic_mask(sccb, 1)
|
|
#define sccb_get_sclp_recv_mask(sccb) sccb_get_generic_mask(sccb, 2)
|
|
#define sccb_get_sclp_send_mask(sccb) sccb_get_generic_mask(sccb, 3)
|
|
|
|
#define sccb_set_generic_mask(sccb, i, val) \
|
|
({ \
|
|
__typeof__(sccb) __sccb = sccb; \
|
|
\
|
|
sccb_set_mask(__sccb->masks, __sccb->mask_length, i, val); \
|
|
})
|
|
#define sccb_set_recv_mask(sccb, val) sccb_set_generic_mask(sccb, 0, val)
|
|
#define sccb_set_send_mask(sccb, val) sccb_set_generic_mask(sccb, 1, val)
|
|
#define sccb_set_sclp_recv_mask(sccb, val) sccb_set_generic_mask(sccb, 2, val)
|
|
#define sccb_set_sclp_send_mask(sccb, val) sccb_set_generic_mask(sccb, 3, val)
|
|
|
|
struct read_cpu_info_sccb {
|
|
struct sccb_header header;
|
|
u16 nr_configured;
|
|
u16 offset_configured;
|
|
u16 nr_standby;
|
|
u16 offset_standby;
|
|
/*
|
|
* Without ext sccb, struct size is PAGE_SIZE.
|
|
* With ext sccb, struct size is EXT_SCCB_READ_CPU.
|
|
*/
|
|
u8 reserved[];
|
|
} __attribute__((packed, aligned(PAGE_SIZE)));
|
|
|
|
struct read_info_sccb {
|
|
struct sccb_header header; /* 0-7 */
|
|
u16 rnmax; /* 8-9 */
|
|
u8 rnsize; /* 10 */
|
|
u8 _pad_11[16 - 11]; /* 11-15 */
|
|
u16 ncpurl; /* 16-17 */
|
|
u16 cpuoff; /* 18-19 */
|
|
u8 _pad_20[24 - 20]; /* 20-23 */
|
|
u8 loadparm[8]; /* 24-31 */
|
|
u8 _pad_32[42 - 32]; /* 32-41 */
|
|
u8 fac42; /* 42 */
|
|
u8 fac43; /* 43 */
|
|
u8 _pad_44[48 - 44]; /* 44-47 */
|
|
u64 facilities; /* 48-55 */
|
|
u8 _pad_56[66 - 56]; /* 56-65 */
|
|
u8 fac66; /* 66 */
|
|
u8 _pad_67[76 - 67]; /* 67-83 */
|
|
u32 ibc; /* 76-79 */
|
|
u8 _pad80[84 - 80]; /* 80-83 */
|
|
u8 fac84; /* 84 */
|
|
u8 fac85; /* 85 */
|
|
u8 _pad_86[91 - 86]; /* 86-90 */
|
|
u8 fac91; /* 91 */
|
|
u8 _pad_92[98 - 92]; /* 92-97 */
|
|
u8 fac98; /* 98 */
|
|
u8 hamaxpow; /* 99 */
|
|
u32 rnsize2; /* 100-103 */
|
|
u64 rnmax2; /* 104-111 */
|
|
u32 hsa_size; /* 112-115 */
|
|
u8 fac116; /* 116 */
|
|
u8 fac117; /* 117 */
|
|
u8 fac118; /* 118 */
|
|
u8 fac119; /* 119 */
|
|
u16 hcpua; /* 120-121 */
|
|
u8 _pad_122[124 - 122]; /* 122-123 */
|
|
u32 hmfai; /* 124-127 */
|
|
u8 _pad_128[134 - 128]; /* 128-133 */
|
|
u8 byte_134; /* 134 */
|
|
u8 cpudirq; /* 135 */
|
|
u16 cbl; /* 136-137 */
|
|
u8 _pad_138[EXT_SCCB_READ_SCP - 138];
|
|
} __packed __aligned(PAGE_SIZE);
|
|
|
|
struct read_storage_sccb {
|
|
struct sccb_header header;
|
|
u16 max_id;
|
|
u16 assigned;
|
|
u16 standby;
|
|
u16 :16;
|
|
u32 entries[];
|
|
} __packed;
|
|
|
|
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)
|
|
#define SCLP_HAS_AP_RECONFIG (sclp.facilities & 0x0000000100000000ULL)
|
|
|
|
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 *);
|
|
};
|
|
|
|
/* 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);
|
|
|
|
enum {
|
|
sclp_init_state_uninitialized,
|
|
sclp_init_state_initializing,
|
|
sclp_init_state_initialized
|
|
};
|
|
|
|
extern int sclp_init_state;
|
|
extern int sclp_console_pages;
|
|
extern bool sclp_console_drop;
|
|
extern unsigned long sclp_console_full;
|
|
extern bool sclp_mask_compat_mode;
|
|
|
|
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);
|
|
unsigned int sclp_early_con_check_vt220(struct init_sccb *sccb);
|
|
int sclp_early_set_event_mask(struct init_sccb *sccb,
|
|
sccb_mask_t receive_mask,
|
|
sccb_mask_t send_mask);
|
|
struct read_info_sccb * __init sclp_early_get_info(void);
|
|
|
|
/* 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" (__pa(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(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(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__ */
|