From bffd4927ba4377aa38be5450e20e0fecd2523fe3 Mon Sep 17 00:00:00 2001 From: Kevin Corry Date: Tue, 24 Oct 2006 18:31:21 +0200 Subject: [POWERPC] cell: add shadow registers for pmd_reg Many of the registers in the performance monitoring unit are write-only. We need to save a "shadow" copy when we write to those registers so we can retrieve the values if we need them later. The new cbe_pmd_shadow_regs structure is added to the cbe_regs_map structure so we have the appropriate per-node copies of these shadow values. Signed-off-by: Kevin Corry Signed-off-by: Arnd Bergmann Signed-off-by: Paul Mackerras --- arch/powerpc/platforms/cell/cbe_regs.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'arch/powerpc/platforms/cell/cbe_regs.c') diff --git a/arch/powerpc/platforms/cell/cbe_regs.c b/arch/powerpc/platforms/cell/cbe_regs.c index 5e3e0e925e4..5a91b75c2f0 100644 --- a/arch/powerpc/platforms/cell/cbe_regs.c +++ b/arch/powerpc/platforms/cell/cbe_regs.c @@ -30,6 +30,7 @@ static struct cbe_regs_map struct cbe_pmd_regs __iomem *pmd_regs; struct cbe_iic_regs __iomem *iic_regs; struct cbe_mic_tm_regs __iomem *mic_tm_regs; + struct cbe_pmd_shadow_regs pmd_shadow_regs; } cbe_regs_maps[MAX_CBE]; static int cbe_regs_map_count; @@ -80,6 +81,22 @@ struct cbe_pmd_regs __iomem *cbe_get_cpu_pmd_regs(int cpu) } EXPORT_SYMBOL_GPL(cbe_get_cpu_pmd_regs); +struct cbe_pmd_shadow_regs *cbe_get_pmd_shadow_regs(struct device_node *np) +{ + struct cbe_regs_map *map = cbe_find_map(np); + if (map == NULL) + return NULL; + return &map->pmd_shadow_regs; +} + +struct cbe_pmd_shadow_regs *cbe_get_cpu_pmd_shadow_regs(int cpu) +{ + struct cbe_regs_map *map = cbe_thread_map[cpu].regs; + if (map == NULL) + return NULL; + return &map->pmd_shadow_regs; +} + struct cbe_iic_regs __iomem *cbe_get_iic_regs(struct device_node *np) { struct cbe_regs_map *map = cbe_find_map(np); -- cgit v1.2.3