diff options
Diffstat (limited to 'drivers/s390/char/sclp.h')
| -rw-r--r-- | drivers/s390/char/sclp.h | 193 |
1 files changed, 138 insertions, 55 deletions
diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h index 53b5d1b9761a..b31a680e0871 100644 --- a/drivers/s390/char/sclp.h +++ b/drivers/s390/char/sclp.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright IBM Corp. 1999,2012 * @@ -10,14 +11,17 @@ #include <linux/types.h> #include <linux/list.h> +#include <asm/asm-extable.h> +#include <asm/machine.h> #include <asm/sclp.h> #include <asm/ebcdic.h> +#include <asm/asm.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 SCLP_EVTYP_MASK(T) (1UL << (sizeof(sccb_mask_t) * BITS_PER_BYTE - (T))) #define EVTYP_OPCMD 0x01 #define EVTYP_MSG 0x02 @@ -27,6 +31,7 @@ #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 @@ -41,6 +46,7 @@ #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) @@ -60,6 +66,9 @@ 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 @@ -75,43 +84,126 @@ typedef unsigned int sclp_cmdw_t; #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)); +typedef u64 sccb_mask_t; 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; + 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; - u8 reserved[4096 - 16]; + /* + * 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 byte_138; /* 138 */ + u8 byte_139; /* 139 */ + u8 _pad_140[EXT_SCCB_READ_SCP - 140]; +} __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) { @@ -130,7 +222,7 @@ static inline void sclp_fill_core_info(struct sclp_core_info *info, #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; @@ -142,13 +234,6 @@ struct gds_vector { 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 */ @@ -190,10 +275,6 @@ struct sclp_register { 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 */ @@ -206,9 +287,7 @@ 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, @@ -218,36 +297,40 @@ enum { extern int sclp_init_state; extern int sclp_console_pages; -extern int sclp_console_drop; +extern bool sclp_console_drop; extern unsigned long sclp_console_full; - -extern char sclp_early_sccb[PAGE_SIZE]; +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, - unsigned long receive_mask, - unsigned long send_mask); + 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 */ + int cc, exception; - asm volatile( - "0: .insn rre,0xb2200000,%1,%2\n" /* servc %1,%2 */ - "1: ipm %0\n" - " srl %0,28\n" + exception = 1; + asm_inline volatile( + "0: .insn rre,0xb2200000,%[cmd],%[sccb]\n" /* servc */ + "1: lhi %[exc],0\n" "2:\n" + CC_IPM(cc) EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) - : "+&d" (cc) : "d" (command), "a" ((unsigned long)sccb) - : "cc", "memory"); - if (cc == 4) + : CC_OUT(cc, cc), [exc] "+d" (exception) + : [cmd] "d" (command), [sccb] "a" (__pa(sccb)) + : CC_CLOBBER_LIST("memory")); + if (exception) return -EINVAL; + cc = CC_TRANSFORM(cc); if (cc == 3) return -EIO; if (cc == 2) @@ -260,21 +343,21 @@ static inline int sclp_service_call(sclp_cmdw_t command, void *sccb) static inline unsigned char sclp_ascebc(unsigned char ch) { - return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[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) +sclp_ebcasc_str(char *str, int nr) { - (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, 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) +sclp_ascebc_str(char *str, int nr) { - (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); + (machine_is_vm()) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); } static inline struct gds_vector * |