From 76032de898f34db55b5048349db56557828a1390 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Mon, 7 Nov 2005 13:12:03 +1100 Subject: [PATCH] [PATCH] powerpc: Make ppc_md.set_dabr non 64-bit specific Define ppc_md.set_dabr for both 32 + 64 bit. Cleanup the implementation for pSeries also, it was needlessly complex. Now we just do two firmware tests at setup time, and use one of two functions, rather than using one function and testing on every call. Signed-off-by: Michael Ellerman Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/process.c | 4 +--- arch/powerpc/platforms/pseries/plpar_wrappers.h | 10 ---------- arch/powerpc/platforms/pseries/setup.c | 17 ++++++++++------- include/asm-powerpc/machdep.h | 4 +++- 4 files changed, 14 insertions(+), 21 deletions(-) diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 96843211cc5..29f6e875cf1 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -46,10 +46,10 @@ #include #include #include +#include #ifdef CONFIG_PPC64 #include #include -#include #endif extern unsigned long _get_SP(void); @@ -203,10 +203,8 @@ int dump_spe(struct pt_regs *regs, elf_vrregset_t *evrregs) int set_dabr(unsigned long dabr) { -#ifdef CONFIG_PPC64 if (ppc_md.set_dabr) return ppc_md.set_dabr(dabr); -#endif mtspr(SPRN_DABR, dabr); return 0; diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h index 382f8c5b0e7..3bd1b3e0600 100644 --- a/arch/powerpc/platforms/pseries/plpar_wrappers.h +++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h @@ -107,14 +107,4 @@ static inline long plpar_put_term_char(unsigned long termno, unsigned long len, lbuf[1]); } -static inline long plpar_set_xdabr(unsigned long address, unsigned long flags) -{ - return plpar_hcall_norets(H_SET_XDABR, address, flags); -} - -static inline long plpar_set_dabr(unsigned long val) -{ - return plpar_hcall_norets(H_SET_DABR, val); -} - #endif /* _PSERIES_PLPAR_WRAPPERS_H */ diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c index 934d7006353..e78c3936884 100644 --- a/arch/powerpc/platforms/pseries/setup.c +++ b/arch/powerpc/platforms/pseries/setup.c @@ -354,14 +354,15 @@ static void pSeries_mach_cpu_die(void) static int pseries_set_dabr(unsigned long dabr) { - if (firmware_has_feature(FW_FEATURE_XDABR)) { - /* We want to catch accesses from kernel and userspace */ - return plpar_set_xdabr(dabr, H_DABRX_KERNEL | H_DABRX_USER); - } - - return plpar_set_dabr(dabr); + return plpar_hcall_norets(H_SET_DABR, dabr); } +static int pseries_set_xdabr(unsigned long dabr) +{ + /* We want to catch accesses from kernel and userspace */ + return plpar_hcall_norets(H_SET_XDABR, dabr, + H_DABRX_KERNEL | H_DABRX_USER); +} /* * Early initialization. Relocation is on but do not reference unbolted pages @@ -397,8 +398,10 @@ static void __init pSeries_init_early(void) DBG("Hello World !\n"); } - if (firmware_has_feature(FW_FEATURE_XDABR | FW_FEATURE_DABR)) + if (firmware_has_feature(FW_FEATURE_DABR)) ppc_md.set_dabr = pseries_set_dabr; + else if (firmware_has_feature(FW_FEATURE_XDABR)) + ppc_md.set_dabr = pseries_set_xdabr; iommu_init_early_pSeries(); diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h index 629ca964b97..b623bc4a155 100644 --- a/include/asm-powerpc/machdep.h +++ b/include/asm-powerpc/machdep.h @@ -80,7 +80,6 @@ struct machdep_calls { void (*iommu_dev_setup)(struct pci_dev *dev); void (*iommu_bus_setup)(struct pci_bus *bus); void (*irq_bus_setup)(struct pci_bus *bus); - int (*set_dabr)(unsigned long dabr); #endif int (*probe)(int platform); @@ -156,6 +155,9 @@ struct machdep_calls { platform, called once per cpu. */ void (*enable_pmcs)(void); + /* Set DABR for this platform, leave empty for default implemenation */ + int (*set_dabr)(unsigned long dabr); + #ifdef CONFIG_PPC32 /* XXX for now */ /* A general init function, called by ppc_init in init/main.c. May be NULL. */ -- 2.41.0