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Commit b09decfd authored by Vasily Gorbik's avatar Vasily Gorbik Committed by Martin Schwidefsky
Browse files

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: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent f01b8bca

arch/s390/include/asm/sclp.h

+1 −0
Original line number Diff line number Diff line
@@ -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);

drivers/s390/char/sclp_early_core.c

+11 −0
Original line number Diff line number Diff line
@@ -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) {}