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| author | Vasily Gorbik <gor@linux.ibm.com> | 2018-04-13 17:37:28 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-10-09 11:21:13 +0200 |
| commit | b09decfd99f8258408decfaa07c5cce6c06fe2cf (patch) | |
| tree | e58f0ec275ccf8c5766b30f3bb80d2983fe7d3ae | |
| parent | f01b8bca088a6fae82fe55cfc95ca9c2096126e8 (diff) | |
| download | op-kernel-dev-b09decfd99f8258408decfaa07c5cce6c06fe2cf.zip op-kernel-dev-b09decfd99f8258408decfaa07c5cce6c06fe2cf.tar.gz | |
s390/sclp: introduce sclp_early_get_hsa_size
Introduce sclp_early_get_hsa_size function to be used during early
memory detection. This function allows to find a memory limit imposed
during zfcpdump.
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | arch/s390/include/asm/sclp.h | 1 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_early_core.c | 11 |
2 files changed, 12 insertions, 0 deletions
diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h index 32b683f..0cd4bda 100644 --- a/arch/s390/include/asm/sclp.h +++ b/arch/s390/include/asm/sclp.h @@ -115,6 +115,7 @@ void sclp_early_printk_force(const char *s); void __sclp_early_printk(const char *s, unsigned int len, unsigned int force); int sclp_early_get_memsize(unsigned long *mem); +int sclp_early_get_hsa_size(unsigned long *hsa_size); int _sclp_get_core_info(struct sclp_core_info *info); int sclp_core_configure(u8 core); int sclp_core_deconfigure(u8 core); diff --git a/drivers/s390/char/sclp_early_core.c b/drivers/s390/char/sclp_early_core.c index acfe0931..387c114 100644 --- a/drivers/s390/char/sclp_early_core.c +++ b/drivers/s390/char/sclp_early_core.c @@ -288,6 +288,17 @@ int __init sclp_early_get_memsize(unsigned long *mem) return 0; } +int __init sclp_early_get_hsa_size(unsigned long *hsa_size) +{ + if (!sclp_info_sccb_valid) + return -EIO; + + *hsa_size = 0; + if (sclp_info_sccb.hsa_size) + *hsa_size = (sclp_info_sccb.hsa_size - 1) * PAGE_SIZE; + return 0; +} + #define SCLP_STORAGE_INFO_FACILITY 0x0000400000000000UL void __weak __init add_mem_detect_block(u64 start, u64 end) {} |
