diff options
Diffstat (limited to 'drivers/s390/char/sclp_early.c')
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 123 |
1 files changed, 3 insertions, 120 deletions
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c index 9a74abb9224d..e792cee3b51c 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -15,80 +15,17 @@ #include "sclp_sdias.h" #include "sclp.h" -#define SCLP_CMDW_READ_SCP_INFO 0x00020001 -#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001 - -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 */ - u8 _pad_112[116 - 112]; /* 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[4096 - 128]; /* 128-4095 */ -} __packed __aligned(PAGE_SIZE); - static struct sclp_ipl_info sclp_ipl_info; struct sclp_info sclp; EXPORT_SYMBOL(sclp); -static int __init sclp_early_read_info(struct read_info_sccb *sccb) -{ - int i; - sclp_cmdw_t commands[] = {SCLP_CMDW_READ_SCP_INFO_FORCED, - SCLP_CMDW_READ_SCP_INFO}; - - for (i = 0; i < ARRAY_SIZE(commands); i++) { - memset(sccb, 0, sizeof(*sccb)); - sccb->header.length = sizeof(*sccb); - sccb->header.function_code = 0x80; - sccb->header.control_mask[2] = 0x80; - if (sclp_early_cmd(commands[i], sccb)) - break; - if (sccb->header.response_code == 0x10) - return 0; - if (sccb->header.response_code != 0x1f0) - break; - } - return -EIO; -} - static void __init sclp_early_facilities_detect(struct read_info_sccb *sccb) { struct sclp_core_entry *cpue; u16 boot_cpu_address, cpu; - if (sclp_early_read_info(sccb)) + if (sclp_early_get_info(sccb)) return; sclp.facilities = sccb->facilities; @@ -147,6 +84,8 @@ static void __init sclp_early_facilities_detect(struct read_info_sccb *sccb) sclp_ipl_info.has_dump = 1; memcpy(&sclp_ipl_info.loadparm, &sccb->loadparm, LOADPARM_LEN); + if (sccb->hsa_size) + sclp.hsa_size = (sccb->hsa_size - 1) * PAGE_SIZE; sclp.mtid = (sccb->fac42 & 0x80) ? (sccb->fac42 & 31) : 0; sclp.mtid_cp = (sccb->fac42 & 0x80) ? (sccb->fac43 & 31) : 0; sclp.mtid_prev = (sccb->fac42 & 0x80) ? (sccb->fac66 & 31) : 0; @@ -189,61 +128,6 @@ int __init sclp_early_get_core_info(struct sclp_core_info *info) return 0; } -static long __init sclp_early_hsa_size_init(struct sdias_sccb *sccb) -{ - memset(sccb, 0, sizeof(*sccb)); - sccb->hdr.length = sizeof(*sccb); - sccb->evbuf.hdr.length = sizeof(struct sdias_evbuf); - sccb->evbuf.hdr.type = EVTYP_SDIAS; - sccb->evbuf.event_qual = SDIAS_EQ_SIZE; - sccb->evbuf.data_id = SDIAS_DI_FCP_DUMP; - sccb->evbuf.event_id = 4712; - sccb->evbuf.dbs = 1; - if (sclp_early_cmd(SCLP_CMDW_WRITE_EVENT_DATA, sccb)) - return -EIO; - if (sccb->hdr.response_code != 0x20) - return -EIO; - if (sccb->evbuf.blk_cnt == 0) - return 0; - return (sccb->evbuf.blk_cnt - 1) * PAGE_SIZE; -} - -static long __init sclp_early_hsa_copy_wait(struct sdias_sccb *sccb) -{ - memset(sccb, 0, PAGE_SIZE); - sccb->hdr.length = PAGE_SIZE; - if (sclp_early_cmd(SCLP_CMDW_READ_EVENT_DATA, sccb)) - return -EIO; - if ((sccb->hdr.response_code != 0x20) && (sccb->hdr.response_code != 0x220)) - return -EIO; - if (sccb->evbuf.blk_cnt == 0) - return 0; - return (sccb->evbuf.blk_cnt - 1) * PAGE_SIZE; -} - -static void __init sclp_early_hsa_size_detect(void *sccb) -{ - unsigned long flags; - long size = -EIO; - - raw_local_irq_save(flags); - if (sclp_early_set_event_mask(sccb, EVTYP_SDIAS_MASK, EVTYP_SDIAS_MASK)) - goto out; - size = sclp_early_hsa_size_init(sccb); - /* First check for synchronous response (LPAR) */ - if (size) - goto out_mask; - if (!(S390_lowcore.ext_params & 1)) - sclp_early_wait_irq(); - size = sclp_early_hsa_copy_wait(sccb); -out_mask: - sclp_early_set_event_mask(sccb, 0, 0); -out: - raw_local_irq_restore(flags); - if (size > 0) - sclp.hsa_size = size; -} - static void __init sclp_early_console_detect(struct init_sccb *sccb) { if (sccb->header.response_code != 0x20) @@ -262,7 +146,6 @@ void __init sclp_early_detect(void) sclp_early_facilities_detect(sccb); sclp_early_init_core_info(sccb); - sclp_early_hsa_size_detect(sccb); /* * Turn off SCLP event notifications. Also save remote masks in the |