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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-30 07:53:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-30 07:53:17 -0700
commita8e498b768d912ad3e7069c86b86bdb821d43b5f (patch)
tree38ae01a72c640c951c071a8bd469d29400ac09d7 /arch/powerpc/kernel
parenta8a44921383039bd5387020d035123d21660b309 (diff)
parentd4db35e8dc963cf2aca15fc22cc5e5a7d98f9255 (diff)
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Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/qe_ic: Fix another breakage from the irq_data conversion powerpc/8xx: Fix another breakage from the irq_data conversion powerpc/cell: Use handle_edge_eoi_irq for real powerpc/pseries: Enable Chelsio network and iWARP drivers powerpc/mm: Move the STAB0 location to 0x8000 to make room in low memory powerpc: Fix accounting of softirq time when idle powerpc/pseries/smp: query-cpu-stopped-state support won't change powerpc/xics: Use hwirq for xics domain irq number powerpc/xics: Fix numberspace mismatch from irq_desc conversion powerpc: Wire up new syscalls powerpc/booke: Correct the SPRN_MAS5 definition. powerpc: ARCH_PFN_OFFSET should be unsigned long powerpc: Implement dma_mmap_coherent() powerpc/nvram: Don't overwrite oops/panic report on normal shutdown powerpc: Restore some misc devices to our configs
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/dma.c18
-rw-r--r--arch/powerpc/kernel/exceptions-64s.S28
-rw-r--r--arch/powerpc/kernel/time.c2
3 files changed, 33 insertions, 15 deletions
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index cf02cad62d9a..d238c082c3c5 100644
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -179,3 +179,21 @@ static int __init dma_init(void)
return 0;
}
fs_initcall(dma_init);
+
+int dma_mmap_coherent(struct device *dev, struct vm_area_struct *vma,
+ void *cpu_addr, dma_addr_t handle, size_t size)
+{
+ unsigned long pfn;
+
+#ifdef CONFIG_NOT_COHERENT_CACHE
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ pfn = __dma_get_coherent_pfn((unsigned long)cpu_addr);
+#else
+ pfn = page_to_pfn(virt_to_page(cpu_addr));
+#endif
+ return remap_pfn_range(vma, vma->vm_start,
+ pfn + vma->vm_pgoff,
+ vma->vm_end - vma->vm_start,
+ vma->vm_page_prot);
+}
+EXPORT_SYMBOL_GPL(dma_mmap_coherent);
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 8a817995b4cd..c532cb2c927a 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -977,20 +977,6 @@ _GLOBAL(do_stab_bolted)
rfid
b . /* prevent speculative execution */
-/*
- * Space for CPU0's segment table.
- *
- * On iSeries, the hypervisor must fill in at least one entry before
- * we get control (with relocate on). The address is given to the hv
- * as a page number (see xLparMap below), so this must be at a
- * fixed address (the linker can't compute (u64)&initial_stab >>
- * PAGE_SHIFT).
- */
- . = STAB0_OFFSET /* 0x6000 */
- .globl initial_stab
-initial_stab:
- .space 4096
-
#ifdef CONFIG_PPC_PSERIES
/*
* Data area reserved for FWNMI option.
@@ -1027,3 +1013,17 @@ xLparMap:
#ifdef CONFIG_PPC_PSERIES
. = 0x8000
#endif /* CONFIG_PPC_PSERIES */
+
+/*
+ * Space for CPU0's segment table.
+ *
+ * On iSeries, the hypervisor must fill in at least one entry before
+ * we get control (with relocate on). The address is given to the hv
+ * as a page number (see xLparMap above), so this must be at a
+ * fixed address (the linker can't compute (u64)&initial_stab >>
+ * PAGE_SHIFT).
+ */
+ . = STAB0_OFFSET /* 0x8000 */
+ .globl initial_stab
+initial_stab:
+ .space 4096
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 09d31dbf43f9..aa9269600ca2 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -356,7 +356,7 @@ void account_system_vtime(struct task_struct *tsk)
}
get_paca()->user_time_scaled += user_scaled;
- if (in_irq() || idle_task(smp_processor_id()) != tsk) {
+ if (in_interrupt() || idle_task(smp_processor_id()) != tsk) {
account_system_time(tsk, 0, delta, sys_scaled);
if (stolen)
account_steal_time(stolen);