diff options
Diffstat (limited to 'drivers/s390/char/sclp_early.c')
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 49 |
1 files changed, 39 insertions, 10 deletions
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c index 5bd6cb145a87..daf6cd5079ec 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -20,26 +20,31 @@ struct read_info_sccb { struct sccb_header header; /* 0-7 */ u16 rnmax; /* 8-9 */ u8 rnsize; /* 10 */ - u8 _reserved0[16 - 11]; /* 11-15 */ + u8 _pad_11[16 - 11]; /* 11-15 */ u16 ncpurl; /* 16-17 */ u16 cpuoff; /* 18-19 */ - u8 _reserved7[24 - 20]; /* 20-23 */ + u8 _pad_20[24 - 20]; /* 20-23 */ u8 loadparm[8]; /* 24-31 */ - u8 _reserved1[48 - 32]; /* 32-47 */ + 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 _reserved2a[76 - 56]; /* 56-75 */ + u8 _pad_56[66 - 56]; /* 56-65 */ + u8 fac66; /* 66 */ + u8 _pad_67[76 - 67]; /* 67-83 */ u32 ibc; /* 76-79 */ - u8 _reserved2b[84 - 80]; /* 80-83 */ + u8 _pad80[84 - 80]; /* 80-83 */ u8 fac84; /* 84 */ u8 fac85; /* 85 */ - u8 _reserved3[91 - 86]; /* 86-90 */ + u8 _pad_86[91 - 86]; /* 86-90 */ u8 flags; /* 91 */ - u8 _reserved4[100 - 92]; /* 92-99 */ + u8 _pad_92[100 - 92]; /* 92-99 */ u32 rnsize2; /* 100-103 */ u64 rnmax2; /* 104-111 */ - u8 _reserved5[120 - 112]; /* 112-119 */ + u8 _pad_112[120 - 112]; /* 112-119 */ u16 hcpua; /* 120-121 */ - u8 _reserved6[4096 - 122]; /* 122-4095 */ + u8 _pad_122[4096 - 122]; /* 122-4095 */ } __packed __aligned(PAGE_SIZE); static char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE) __initdata; @@ -50,6 +55,10 @@ static unsigned int sclp_max_cpu; static struct sclp_ipl_info sclp_ipl_info; static unsigned char sclp_siif; static u32 sclp_ibc; +static unsigned int sclp_mtid; +static unsigned int sclp_mtid_cp; +static unsigned int sclp_mtid_max; +static unsigned int sclp_mtid_prev; u64 sclp_facilities; u8 sclp_fac84; @@ -128,7 +137,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb) boot_cpu_address = stap(); cpue = (void *)sccb + sccb->cpuoff; for (cpu = 0; cpu < sccb->ncpurl; cpue++, cpu++) { - if (boot_cpu_address != cpue->address) + if (boot_cpu_address != cpue->core_id) continue; sclp_siif = cpue->siif; break; @@ -139,6 +148,11 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb) if (sccb->flags & 0x2) sclp_ipl_info.has_dump = 1; memcpy(&sclp_ipl_info.loadparm, &sccb->loadparm, LOADPARM_LEN); + + sclp_mtid = (sccb->fac42 & 0x80) ? (sccb->fac42 & 31) : 0; + sclp_mtid_cp = (sccb->fac42 & 0x80) ? (sccb->fac43 & 31) : 0; + sclp_mtid_max = max(sclp_mtid, sclp_mtid_cp); + sclp_mtid_prev = (sccb->fac42 & 0x80) ? (sccb->fac66 & 31) : 0; } bool __init sclp_has_linemode(void) @@ -178,6 +192,21 @@ unsigned int sclp_get_ibc(void) } EXPORT_SYMBOL(sclp_get_ibc); +unsigned int sclp_get_mtid(u8 cpu_type) +{ + return cpu_type ? sclp_mtid : sclp_mtid_cp; +} + +unsigned int sclp_get_mtid_max(void) +{ + return sclp_mtid_max; +} + +unsigned int sclp_get_mtid_prev(void) +{ + return sclp_mtid_prev; +} + /* * This function will be called after sclp_facilities_detect(), which gets * called from early.c code. The sclp_facilities_detect() function retrieves |