2008-10-23 09:26:29 +04:00
# ifndef _ASM_X86_EFI_H
# define _ASM_X86_EFI_H
2008-01-30 15:31:19 +03:00
# ifdef CONFIG_X86_32
2008-01-30 15:31:19 +03:00
extern unsigned long asmlinkage efi_call_phys ( void * , . . . ) ;
# define efi_call_phys0(f) efi_call_phys(f)
# define efi_call_phys1(f, a1) efi_call_phys(f, a1)
# define efi_call_phys2(f, a1, a2) efi_call_phys(f, a1, a2)
# define efi_call_phys3(f, a1, a2, a3) efi_call_phys(f, a1, a2, a3)
# define efi_call_phys4(f, a1, a2, a3, a4) \
efi_call_phys ( f , a1 , a2 , a3 , a4 )
# define efi_call_phys5(f, a1, a2, a3, a4, a5) \
efi_call_phys ( f , a1 , a2 , a3 , a4 , a5 )
# define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \
efi_call_phys ( f , a1 , a2 , a3 , a4 , a5 , a6 )
/*
* Wrap all the virtual calls in a way that forces the parameters on the stack .
*/
# define efi_call_virt(f, args...) \
2008-03-23 11:02:07 +03:00
( ( efi_ # # f # # _t __attribute__ ( ( regparm ( 0 ) ) ) * ) efi . systab - > runtime - > f ) ( args )
2008-01-30 15:31:19 +03:00
# define efi_call_virt0(f) efi_call_virt(f)
# define efi_call_virt1(f, a1) efi_call_virt(f, a1)
# define efi_call_virt2(f, a1, a2) efi_call_virt(f, a1, a2)
# define efi_call_virt3(f, a1, a2, a3) efi_call_virt(f, a1, a2, a3)
# define efi_call_virt4(f, a1, a2, a3, a4) \
efi_call_virt ( f , a1 , a2 , a3 , a4 )
# define efi_call_virt5(f, a1, a2, a3, a4, a5) \
efi_call_virt ( f , a1 , a2 , a3 , a4 , a5 )
# define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
efi_call_virt ( f , a1 , a2 , a3 , a4 , a5 , a6 )
x86: Make 64-bit efi_ioremap use ioremap on MMIO regions
Booting current 64-bit x86 kernels on the latest Apple MacBook
(MacBook5,2) via EFI gives the following warning:
[ 0.182209] ------------[ cut here ]------------
[ 0.182222] WARNING: at arch/x86/mm/pageattr.c:581 __cpa_process_fault+0x44/0xa0()
[ 0.182227] Hardware name: MacBook5,2
[ 0.182231] CPA: called for zero pte. vaddr = ffff8800ffe00000 cpa->vaddr = ffff8800ffe00000
[ 0.182236] Modules linked in:
[ 0.182242] Pid: 0, comm: swapper Not tainted 2.6.31-rc4 #6
[ 0.182246] Call Trace:
[ 0.182254] [<ffffffff8102c754>] ? __cpa_process_fault+0x44/0xa0
[ 0.182261] [<ffffffff81048668>] warn_slowpath_common+0x78/0xd0
[ 0.182266] [<ffffffff81048744>] warn_slowpath_fmt+0x64/0x70
[ 0.182272] [<ffffffff8102c7ec>] ? update_page_count+0x3c/0x50
[ 0.182280] [<ffffffff818d25c5>] ? phys_pmd_init+0x140/0x22e
[ 0.182286] [<ffffffff8102c754>] __cpa_process_fault+0x44/0xa0
[ 0.182292] [<ffffffff8102ce60>] __change_page_attr_set_clr+0x5f0/0xb40
[ 0.182301] [<ffffffff810d1035>] ? vm_unmap_aliases+0x175/0x190
[ 0.182307] [<ffffffff8102d4ae>] change_page_attr_set_clr+0xfe/0x3d0
[ 0.182314] [<ffffffff8102dcca>] _set_memory_uc+0x2a/0x30
[ 0.182319] [<ffffffff8102dd4b>] set_memory_uc+0x7b/0xb0
[ 0.182327] [<ffffffff818afe31>] efi_enter_virtual_mode+0x2ad/0x2c9
[ 0.182334] [<ffffffff818a1c66>] start_kernel+0x2db/0x3f4
[ 0.182340] [<ffffffff818a1289>] x86_64_start_reservations+0x99/0xb9
[ 0.182345] [<ffffffff818a1389>] x86_64_start_kernel+0xe0/0xf2
[ 0.182357] ---[ end trace 4eaa2a86a8e2da22 ]---
[ 0.182982] init_memory_mapping: 00000000ffffc000-0000000100000000
[ 0.182993] 00ffffc000 - 0100000000 page 4k
This happens because the 64-bit version of efi_ioremap calls
init_memory_mapping for all addresses, regardless of whether they are
RAM or MMIO. The EFI tables on this machine ask for runtime access to
some MMIO regions:
[ 0.000000] EFI: mem195: type=11, attr=0x8000000000000000, range=[0x0000000093400000-0x0000000093401000) (0MB)
[ 0.000000] EFI: mem196: type=11, attr=0x8000000000000000, range=[0x00000000ffc00000-0x00000000ffc40000) (0MB)
[ 0.000000] EFI: mem197: type=11, attr=0x8000000000000000, range=[0x00000000ffc40000-0x00000000ffc80000) (0MB)
[ 0.000000] EFI: mem198: type=11, attr=0x8000000000000000, range=[0x00000000ffc80000-0x00000000ffca4000) (0MB)
[ 0.000000] EFI: mem199: type=11, attr=0x8000000000000000, range=[0x00000000ffca4000-0x00000000ffcb4000) (0MB)
[ 0.000000] EFI: mem200: type=11, attr=0x8000000000000000, range=[0x00000000ffcb4000-0x00000000ffffc000) (3MB)
[ 0.000000] EFI: mem201: type=11, attr=0x8000000000000000, range=[0x00000000ffffc000-0x0000000100000000) (0MB)
This arranges to pass the EFI memory type through to efi_ioremap, and
makes efi_ioremap use ioremap rather than init_memory_mapping if the
type is EFI_MEMORY_MAPPED_IO. With this, the above warning goes away.
Signed-off-by: Paul Mackerras <paulus@samba.org>
LKML-Reference: <19062.55858.533494.471153@cargo.ozlabs.ibm.com>
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-08-03 16:38:10 +04:00
# define efi_ioremap(addr, size, type) ioremap_cache(addr, size)
2008-01-30 15:31:19 +03:00
2008-01-30 15:31:19 +03:00
# else /* !CONFIG_X86_32 */
extern u64 efi_call0 ( void * fp ) ;
extern u64 efi_call1 ( void * fp , u64 arg1 ) ;
extern u64 efi_call2 ( void * fp , u64 arg1 , u64 arg2 ) ;
extern u64 efi_call3 ( void * fp , u64 arg1 , u64 arg2 , u64 arg3 ) ;
extern u64 efi_call4 ( void * fp , u64 arg1 , u64 arg2 , u64 arg3 , u64 arg4 ) ;
extern u64 efi_call5 ( void * fp , u64 arg1 , u64 arg2 , u64 arg3 ,
u64 arg4 , u64 arg5 ) ;
extern u64 efi_call6 ( void * fp , u64 arg1 , u64 arg2 , u64 arg3 ,
u64 arg4 , u64 arg5 , u64 arg6 ) ;
# define efi_call_phys0(f) \
efi_call0 ( ( void * ) ( f ) )
# define efi_call_phys1(f, a1) \
efi_call1 ( ( void * ) ( f ) , ( u64 ) ( a1 ) )
# define efi_call_phys2(f, a1, a2) \
efi_call2 ( ( void * ) ( f ) , ( u64 ) ( a1 ) , ( u64 ) ( a2 ) )
# define efi_call_phys3(f, a1, a2, a3) \
efi_call3 ( ( void * ) ( f ) , ( u64 ) ( a1 ) , ( u64 ) ( a2 ) , ( u64 ) ( a3 ) )
# define efi_call_phys4(f, a1, a2, a3, a4) \
efi_call4 ( ( void * ) ( f ) , ( u64 ) ( a1 ) , ( u64 ) ( a2 ) , ( u64 ) ( a3 ) , \
( u64 ) ( a4 ) )
# define efi_call_phys5(f, a1, a2, a3, a4, a5) \
efi_call5 ( ( void * ) ( f ) , ( u64 ) ( a1 ) , ( u64 ) ( a2 ) , ( u64 ) ( a3 ) , \
( u64 ) ( a4 ) , ( u64 ) ( a5 ) )
# define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \
efi_call6 ( ( void * ) ( f ) , ( u64 ) ( a1 ) , ( u64 ) ( a2 ) , ( u64 ) ( a3 ) , \
( u64 ) ( a4 ) , ( u64 ) ( a5 ) , ( u64 ) ( a6 ) )
# define efi_call_virt0(f) \
efi_call0 ( ( void * ) ( efi . systab - > runtime - > f ) )
# define efi_call_virt1(f, a1) \
efi_call1 ( ( void * ) ( efi . systab - > runtime - > f ) , ( u64 ) ( a1 ) )
# define efi_call_virt2(f, a1, a2) \
efi_call2 ( ( void * ) ( efi . systab - > runtime - > f ) , ( u64 ) ( a1 ) , ( u64 ) ( a2 ) )
# define efi_call_virt3(f, a1, a2, a3) \
efi_call3 ( ( void * ) ( efi . systab - > runtime - > f ) , ( u64 ) ( a1 ) , ( u64 ) ( a2 ) , \
( u64 ) ( a3 ) )
# define efi_call_virt4(f, a1, a2, a3, a4) \
efi_call4 ( ( void * ) ( efi . systab - > runtime - > f ) , ( u64 ) ( a1 ) , ( u64 ) ( a2 ) , \
( u64 ) ( a3 ) , ( u64 ) ( a4 ) )
# define efi_call_virt5(f, a1, a2, a3, a4, a5) \
efi_call5 ( ( void * ) ( efi . systab - > runtime - > f ) , ( u64 ) ( a1 ) , ( u64 ) ( a2 ) , \
( u64 ) ( a3 ) , ( u64 ) ( a4 ) , ( u64 ) ( a5 ) )
# define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \
efi_call6 ( ( void * ) ( efi . systab - > runtime - > f ) , ( u64 ) ( a1 ) , ( u64 ) ( a2 ) , \
( u64 ) ( a3 ) , ( u64 ) ( a4 ) , ( u64 ) ( a5 ) , ( u64 ) ( a6 ) )
x86: Make 64-bit efi_ioremap use ioremap on MMIO regions
Booting current 64-bit x86 kernels on the latest Apple MacBook
(MacBook5,2) via EFI gives the following warning:
[ 0.182209] ------------[ cut here ]------------
[ 0.182222] WARNING: at arch/x86/mm/pageattr.c:581 __cpa_process_fault+0x44/0xa0()
[ 0.182227] Hardware name: MacBook5,2
[ 0.182231] CPA: called for zero pte. vaddr = ffff8800ffe00000 cpa->vaddr = ffff8800ffe00000
[ 0.182236] Modules linked in:
[ 0.182242] Pid: 0, comm: swapper Not tainted 2.6.31-rc4 #6
[ 0.182246] Call Trace:
[ 0.182254] [<ffffffff8102c754>] ? __cpa_process_fault+0x44/0xa0
[ 0.182261] [<ffffffff81048668>] warn_slowpath_common+0x78/0xd0
[ 0.182266] [<ffffffff81048744>] warn_slowpath_fmt+0x64/0x70
[ 0.182272] [<ffffffff8102c7ec>] ? update_page_count+0x3c/0x50
[ 0.182280] [<ffffffff818d25c5>] ? phys_pmd_init+0x140/0x22e
[ 0.182286] [<ffffffff8102c754>] __cpa_process_fault+0x44/0xa0
[ 0.182292] [<ffffffff8102ce60>] __change_page_attr_set_clr+0x5f0/0xb40
[ 0.182301] [<ffffffff810d1035>] ? vm_unmap_aliases+0x175/0x190
[ 0.182307] [<ffffffff8102d4ae>] change_page_attr_set_clr+0xfe/0x3d0
[ 0.182314] [<ffffffff8102dcca>] _set_memory_uc+0x2a/0x30
[ 0.182319] [<ffffffff8102dd4b>] set_memory_uc+0x7b/0xb0
[ 0.182327] [<ffffffff818afe31>] efi_enter_virtual_mode+0x2ad/0x2c9
[ 0.182334] [<ffffffff818a1c66>] start_kernel+0x2db/0x3f4
[ 0.182340] [<ffffffff818a1289>] x86_64_start_reservations+0x99/0xb9
[ 0.182345] [<ffffffff818a1389>] x86_64_start_kernel+0xe0/0xf2
[ 0.182357] ---[ end trace 4eaa2a86a8e2da22 ]---
[ 0.182982] init_memory_mapping: 00000000ffffc000-0000000100000000
[ 0.182993] 00ffffc000 - 0100000000 page 4k
This happens because the 64-bit version of efi_ioremap calls
init_memory_mapping for all addresses, regardless of whether they are
RAM or MMIO. The EFI tables on this machine ask for runtime access to
some MMIO regions:
[ 0.000000] EFI: mem195: type=11, attr=0x8000000000000000, range=[0x0000000093400000-0x0000000093401000) (0MB)
[ 0.000000] EFI: mem196: type=11, attr=0x8000000000000000, range=[0x00000000ffc00000-0x00000000ffc40000) (0MB)
[ 0.000000] EFI: mem197: type=11, attr=0x8000000000000000, range=[0x00000000ffc40000-0x00000000ffc80000) (0MB)
[ 0.000000] EFI: mem198: type=11, attr=0x8000000000000000, range=[0x00000000ffc80000-0x00000000ffca4000) (0MB)
[ 0.000000] EFI: mem199: type=11, attr=0x8000000000000000, range=[0x00000000ffca4000-0x00000000ffcb4000) (0MB)
[ 0.000000] EFI: mem200: type=11, attr=0x8000000000000000, range=[0x00000000ffcb4000-0x00000000ffffc000) (3MB)
[ 0.000000] EFI: mem201: type=11, attr=0x8000000000000000, range=[0x00000000ffffc000-0x0000000100000000) (0MB)
This arranges to pass the EFI memory type through to efi_ioremap, and
makes efi_ioremap use ioremap rather than init_memory_mapping if the
type is EFI_MEMORY_MAPPED_IO. With this, the above warning goes away.
Signed-off-by: Paul Mackerras <paulus@samba.org>
LKML-Reference: <19062.55858.533494.471153@cargo.ozlabs.ibm.com>
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-08-03 16:38:10 +04:00
extern void __iomem * efi_ioremap ( unsigned long addr , unsigned long size ,
u32 type ) ;
2008-01-30 15:31:19 +03:00
# endif /* CONFIG_X86_32 */
2008-12-29 18:06:40 +03:00
extern int add_efi_memmap ;
2010-08-26 00:39:17 +04:00
extern void efi_memblock_x86_reserve_range ( void ) ;
2008-01-30 15:31:19 +03:00
extern void efi_call_phys_prelog ( void ) ;
extern void efi_call_phys_epilog ( void ) ;
2008-10-03 20:59:15 +04:00
# ifndef CONFIG_EFI
/*
* IF EFI is not configured , have the EFI calls return - ENOSYS .
*/
# define efi_call0(_f) (-ENOSYS)
# define efi_call1(_f, _a1) (-ENOSYS)
# define efi_call2(_f, _a1, _a2) (-ENOSYS)
# define efi_call3(_f, _a1, _a2, _a3) (-ENOSYS)
# define efi_call4(_f, _a1, _a2, _a3, _a4) (-ENOSYS)
# define efi_call5(_f, _a1, _a2, _a3, _a4, _a5) (-ENOSYS)
# define efi_call6(_f, _a1, _a2, _a3, _a4, _a5, _a6) (-ENOSYS)
# endif /* CONFIG_EFI */
2008-10-23 09:26:29 +04:00
# endif /* _ASM_X86_EFI_H */