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| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2007-09-21 00:21:11 +0400 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2007-10-13 02:11:22 +0400 |
| commit | edbe7075d144b35e8232ca32f373c1e0c26ff085 (patch) | |
| tree | 071018351041af71e3e5dc141b5f2a336d893573 /include/asm-ia64 | |
| parent | 8e75ad8908bd653191b19347ecccb4078cb17b74 (diff) | |
| download | linux-edbe7075d144b35e8232ca32f373c1e0c26ff085.tar.xz | |
[IA64] abstract SAL_CALL wrapper to allow other firmware entry points
SAL_CALL() always calls through the ia64_sal function pointer. I am adding
new functionality that needs the same conventions as SAL_CALL (FP regs
saved/restored, sal_lock acquired, etc), but doesn't use the ia64_sal
function pointer.
This patch pulls the body of SAL_CALL out into a new "IA64_FW_CALL" that
takes care of these calling conventions, but allows the caller to specify
either ia64_sal or some other firmware entry point.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/asm-ia64')
| -rw-r--r-- | include/asm-ia64/sal.h | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/include/asm-ia64/sal.h b/include/asm-ia64/sal.h index 46cadf5aaac5..1f5412d6f9bb 100644 --- a/include/asm-ia64/sal.h +++ b/include/asm-ia64/sal.h @@ -46,25 +46,28 @@ extern spinlock_t sal_lock; /* SAL spec _requires_ eight args for each call. */ -#define __SAL_CALL(result,a0,a1,a2,a3,a4,a5,a6,a7) \ - result = (*ia64_sal)(a0,a1,a2,a3,a4,a5,a6,a7) +#define __IA64_FW_CALL(entry,result,a0,a1,a2,a3,a4,a5,a6,a7) \ + result = (*entry)(a0,a1,a2,a3,a4,a5,a6,a7) -# define SAL_CALL(result,args...) do { \ +# define IA64_FW_CALL(entry,result,args...) do { \ unsigned long __ia64_sc_flags; \ struct ia64_fpreg __ia64_sc_fr[6]; \ ia64_save_scratch_fpregs(__ia64_sc_fr); \ spin_lock_irqsave(&sal_lock, __ia64_sc_flags); \ - __SAL_CALL(result, args); \ + __IA64_FW_CALL(entry, result, args); \ spin_unlock_irqrestore(&sal_lock, __ia64_sc_flags); \ ia64_load_scratch_fpregs(__ia64_sc_fr); \ } while (0) +# define SAL_CALL(result,args...) \ + IA64_FW_CALL(ia64_sal, result, args); + # define SAL_CALL_NOLOCK(result,args...) do { \ unsigned long __ia64_scn_flags; \ struct ia64_fpreg __ia64_scn_fr[6]; \ ia64_save_scratch_fpregs(__ia64_scn_fr); \ local_irq_save(__ia64_scn_flags); \ - __SAL_CALL(result, args); \ + __IA64_FW_CALL(ia64_sal, result, args); \ local_irq_restore(__ia64_scn_flags); \ ia64_load_scratch_fpregs(__ia64_scn_fr); \ } while (0) @@ -73,7 +76,7 @@ extern spinlock_t sal_lock; struct ia64_fpreg __ia64_scs_fr[6]; \ ia64_save_scratch_fpregs(__ia64_scs_fr); \ preempt_disable(); \ - __SAL_CALL(result, args); \ + __IA64_FW_CALL(ia64_sal, result, args); \ preempt_enable(); \ ia64_load_scratch_fpregs(__ia64_scs_fr); \ } while (0) |