Commit 23c35700 authored by Russ Anderson's avatar Russ Anderson Committed by H. Peter Anvin
Browse files

x86: uv: Add UV reserved page bios call 



Add UV bios call to get the address of the reserved page.

Signed-off-by: default avatarRuss Anderson <rja@sgi.com>
Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
parent e8929c8a

arch/x86/include/asm/uv/bios.h

+4 −1
Original line number Diff line number Diff line
@@ -35,13 +35,15 @@ enum uv_bios_cmd { 
	UV_BIOS_FREQ_BASE,

	UV_BIOS_WATCHLIST_ALLOC,

	UV_BIOS_WATCHLIST_FREE,

	UV_BIOS_MEMPROTECT

	UV_BIOS_MEMPROTECT,

	UV_BIOS_GET_PARTITION_ADDR

};



/*

 * Status values returned from a BIOS call.

 */

enum {

	BIOS_STATUS_MORE_PASSES		=  1,

	BIOS_STATUS_SUCCESS		=  0,

	BIOS_STATUS_UNIMPLEMENTED	= -ENOSYS,

	BIOS_STATUS_EINVAL		= -EINVAL,
@@ -102,6 +104,7 @@ extern int uv_bios_mq_watchlist_alloc(int, void *, unsigned int, 
					unsigned long *);

extern int uv_bios_mq_watchlist_free(int, int);

extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect);

extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *);



extern void uv_bios_init(void);

arch/x86/kernel/bios_uv.c

+11 −0
Original line number Diff line number Diff line
@@ -142,6 +142,17 @@ uv_bios_change_memprotect(u64 paddr, u64 len, enum uv_memprotect perms) 
}

EXPORT_SYMBOL_GPL(uv_bios_change_memprotect);



s64

uv_bios_reserved_page_pa(u64 buf, u64 *cookie, u64 *addr, u64 *len)

{

	s64 ret;



	ret = uv_bios_call_irqsave(UV_BIOS_GET_PARTITION_ADDR, (u64)cookie,

					(u64)addr, buf, (u64)len, 0);

	return ret;

}

EXPORT_SYMBOL_GPL(uv_bios_reserved_page_pa);



s64 uv_bios_freq_base(u64 clock_type, u64 *ticks_per_second)

{

	return uv_bios_call(UV_BIOS_FREQ_BASE, clock_type,