Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux

Pull powerpc updates from Michael Ellerman:
 "Here's a first pull request for powerpc updates for 3.18.

  The bulk of the additions are for the "cxl" driver, for IBM's Coherent
  Accelerator Processor Interface (CAPI).  Most of it's in drivers/misc,
  which Greg & Arnd maintain, Greg said he was happy for us to take it
  through our tree.

  There's the usual minor cleanups and fixes, including a bit of noise
  in drivers from some of those.  A bunch of updates to our EEH code,
  which has been getting more testing.  Several nice speedups from
  Anton, including 20% in clear_page().

  And a bunch of updates for freescale from Scott"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (130 commits)
  cxl: Fix afu_read() not doing finish_wait() on signal or non-blocking
  cxl: Add documentation for userspace APIs
  cxl: Add driver to Kbuild and Makefiles
  cxl: Add userspace header file
  cxl: Driver code for powernv PCIe based cards for userspace access
  cxl: Add base builtin support
  powerpc/mm: Add hooks for cxl
  powerpc/opal: Add PHB to cxl mode call
  powerpc/mm: Add new hash_page_mm()
  powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts
  cxl: Add new header for call backs and structs
  powerpc/powernv: Split out set MSI IRQ chip code
  powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize
  powerpc/msi: Improve IRQ bitmap allocator
  powerpc/cell: Make spu_flush_all_slbs() generic
  powerpc/cell: Move data segment faulting code out of cell platform
  powerpc/cell: Move spu_handle_mm_fault() out of cell platform
  powerpc/pseries: Use new defines when calling H_SET_MODE
  powerpc: Update contact info in Documentation files
  powerpc/perf/hv-24x7: Simplify catalog_read()
  ...

7 files changed, 15 insertions, 145 deletions

diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig
index 9978f594cac0..870b6dbd4d18 100644
--- a/arch/powerpc/platforms/cell/Kconfig
+++ b/arch/powerpc/platforms/cell/Kconfig
@@ -86,6 +86,7 @@ config SPU_FS_64K_LS
 config SPU_BASE
 	bool
 	default n
+	select PPC_COPRO_BASE
 
 config CBE_RAS
 	bool "RAS features for bare metal Cell BE"
diff --git a/arch/powerpc/platforms/cell/Makefile b/arch/powerpc/platforms/cell/Makefile
index fe053e7c73ee..2d16884f67b9 100644
--- a/arch/powerpc/platforms/cell/Makefile
+++ b/arch/powerpc/platforms/cell/Makefile
@@ -20,7 +20,7 @@ spu-manage-$(CONFIG_PPC_CELL_COMMON)	+= spu_manage.o
 
 obj-$(CONFIG_SPU_BASE)			+= spu_callbacks.o spu_base.o \
 					   spu_notify.o \
-					   spu_syscalls.o spu_fault.o \
+					   spu_syscalls.o \
 					   $(spu-priv1-y) \
 					   $(spu-manage-y) \
 					   spufs/
diff --git a/arch/powerpc/platforms/cell/celleb_pci.c b/arch/powerpc/platforms/cell/celleb_pci.c
index 173568140a32..2b98a36ef8fb 100644
--- a/arch/powerpc/platforms/cell/celleb_pci.c
+++ b/arch/powerpc/platforms/cell/celleb_pci.c
@@ -454,7 +454,7 @@ static struct celleb_phb_spec celleb_fake_pci_spec __initdata = {
 	.setup = celleb_setup_fake_pci,
 };
 
-static struct of_device_id celleb_phb_match[] __initdata = {
+static const struct of_device_id celleb_phb_match[] __initconst = {
 	{
 		.name = "pci-pseudo",
 		.data = &celleb_fake_pci_spec,
diff --git a/arch/powerpc/platforms/cell/celleb_setup.c b/arch/powerpc/platforms/cell/celleb_setup.c
index 1d5a4d8ddad9..34e8ce2976aa 100644
--- a/arch/powerpc/platforms/cell/celleb_setup.c
+++ b/arch/powerpc/platforms/cell/celleb_setup.c
@@ -102,7 +102,7 @@ static void __init celleb_setup_arch_common(void)
 #endif
 }
 
-static struct of_device_id celleb_bus_ids[] __initdata = {
+static const struct of_device_id celleb_bus_ids[] __initconst = {
 	{ .type = "scc", },
 	{ .type = "ioif", },	/* old style */
 	{},
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index 2930d1e81a05..ffcbd242e669 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -76,10 +76,6 @@ static LIST_HEAD(spu_full_list);
 static DEFINE_SPINLOCK(spu_full_list_lock);
 static DEFINE_MUTEX(spu_full_list_mutex);
 
-struct spu_slb {
-	u64 esid, vsid;
-};
-
 void spu_invalidate_slbs(struct spu *spu)
 {
 	struct spu_priv2 __iomem *priv2 = spu->priv2;
@@ -149,7 +145,7 @@ static void spu_restart_dma(struct spu *spu)
 	}
 }
 
-static inline void spu_load_slb(struct spu *spu, int slbe, struct spu_slb *slb)
+static inline void spu_load_slb(struct spu *spu, int slbe, struct copro_slb *slb)
 {
 	struct spu_priv2 __iomem *priv2 = spu->priv2;
 
@@ -167,45 +163,12 @@ static inline void spu_load_slb(struct spu *spu, int slbe, struct spu_slb *slb)
 
 static int __spu_trap_data_seg(struct spu *spu, unsigned long ea)
 {
-	struct mm_struct *mm = spu->mm;
-	struct spu_slb slb;
-	int psize;
-
-	pr_debug("%s\n", __func__);
-
-	slb.esid = (ea & ESID_MASK) | SLB_ESID_V;
+	struct copro_slb slb;
+	int ret;
 
-	switch(REGION_ID(ea)) {
-	case USER_REGION_ID:
-#ifdef CONFIG_PPC_MM_SLICES
-		psize = get_slice_psize(mm, ea);
-#else
-		psize = mm->context.user_psize;
-#endif
-		slb.vsid = (get_vsid(mm->context.id, ea, MMU_SEGSIZE_256M)
-				<< SLB_VSID_SHIFT) | SLB_VSID_USER;
-		break;
-	case VMALLOC_REGION_ID:
-		if (ea < VMALLOC_END)
-			psize = mmu_vmalloc_psize;
-		else
-			psize = mmu_io_psize;
-		slb.vsid = (get_kernel_vsid(ea, MMU_SEGSIZE_256M)
-				<< SLB_VSID_SHIFT) | SLB_VSID_KERNEL;
-		break;
-	case KERNEL_REGION_ID:
-		psize = mmu_linear_psize;
-		slb.vsid = (get_kernel_vsid(ea, MMU_SEGSIZE_256M)
-				<< SLB_VSID_SHIFT) | SLB_VSID_KERNEL;
-		break;
-	default:
-		/* Future: support kernel segments so that drivers
-		 * can use SPUs.
-		 */
-		pr_debug("invalid region access at %016lx\n", ea);
-		return 1;
-	}
-	slb.vsid |= mmu_psize_defs[psize].sllp;
+	ret = copro_calculate_slb(spu->mm, ea, &slb);
+	if (ret)
+		return ret;
 
 	spu_load_slb(spu, spu->slb_replace, &slb);
 
@@ -253,7 +216,7 @@ static int __spu_trap_data_map(struct spu *spu, unsigned long ea, u64 dsisr)
 	return 0;
 }
 
-static void __spu_kernel_slb(void *addr, struct spu_slb *slb)
+static void __spu_kernel_slb(void *addr, struct copro_slb *slb)
 {
 	unsigned long ea = (unsigned long)addr;
 	u64 llp;
@@ -272,7 +235,7 @@ static void __spu_kernel_slb(void *addr, struct spu_slb *slb)
  * Given an array of @nr_slbs SLB entries, @slbs, return non-zero if the
  * address @new_addr is present.
  */
-static inline int __slb_present(struct spu_slb *slbs, int nr_slbs,
+static inline int __slb_present(struct copro_slb *slbs, int nr_slbs,
 		void *new_addr)
 {
 	unsigned long ea = (unsigned long)new_addr;
@@ -297,7 +260,7 @@ static inline int __slb_present(struct spu_slb *slbs, int nr_slbs,
 void spu_setup_kernel_slbs(struct spu *spu, struct spu_lscsa *lscsa,
 		void *code, int code_size)
 {
-	struct spu_slb slbs[4];
+	struct copro_slb slbs[4];
 	int i, nr_slbs = 0;
 	/* start and end addresses of both mappings */
 	void *addrs[] = {
diff --git a/arch/powerpc/platforms/cell/spu_fault.c b/arch/powerpc/platforms/cell/spu_fault.c
deleted file mode 100644
index 641e7273d75a..000000000000
--- a/arch/powerpc/platforms/cell/spu_fault.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * SPU mm fault handler
- *
- * (C) Copyright IBM Deutschland Entwicklung GmbH 2007
- *
- * Author: Arnd Bergmann <arndb@de.ibm.com>
- * Author: Jeremy Kerr <jk@ozlabs.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/export.h>
-
-#include <asm/spu.h>
-#include <asm/spu_csa.h>
-
-/*
- * This ought to be kept in sync with the powerpc specific do_page_fault
- * function. Currently, there are a few corner cases that we haven't had
- * to handle fortunately.
- */
-int spu_handle_mm_fault(struct mm_struct *mm, unsigned long ea,
-		unsigned long dsisr, unsigned *flt)
-{
-	struct vm_area_struct *vma;
-	unsigned long is_write;
-	int ret;
-
-	if (mm == NULL)
-		return -EFAULT;
-
-	if (mm->pgd == NULL)
-		return -EFAULT;
-
-	down_read(&mm->mmap_sem);
-	ret = -EFAULT;
-	vma = find_vma(mm, ea);
-	if (!vma)
-		goto out_unlock;
-
-	if (ea < vma->vm_start) {
-		if (!(vma->vm_flags & VM_GROWSDOWN))
-			goto out_unlock;
-		if (expand_stack(vma, ea))
-			goto out_unlock;
-	}
-
-	is_write = dsisr & MFC_DSISR_ACCESS_PUT;
-	if (is_write) {
-		if (!(vma->vm_flags & VM_WRITE))
-			goto out_unlock;
-	} else {
-		if (dsisr & MFC_DSISR_ACCESS_DENIED)
-			goto out_unlock;
-		if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
-			goto out_unlock;
-	}
-
-	ret = 0;
-	*flt = handle_mm_fault(mm, vma, ea, is_write ? FAULT_FLAG_WRITE : 0);
-	if (unlikely(*flt & VM_FAULT_ERROR)) {
-		if (*flt & VM_FAULT_OOM) {
-			ret = -ENOMEM;
-			goto out_unlock;
-		} else if (*flt & VM_FAULT_SIGBUS) {
-			ret = -EFAULT;
-			goto out_unlock;
-		}
-		BUG();
-	}
-
-	if (*flt & VM_FAULT_MAJOR)
-		current->maj_flt++;
-	else
-		current->min_flt++;
-
-out_unlock:
-	up_read(&mm->mmap_sem);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(spu_handle_mm_fault);
diff --git a/arch/powerpc/platforms/cell/spufs/fault.c b/arch/powerpc/platforms/cell/spufs/fault.c
index 8cb6260cc80f..e45894a08118 100644
--- a/arch/powerpc/platforms/cell/spufs/fault.c
+++ b/arch/powerpc/platforms/cell/spufs/fault.c
@@ -138,7 +138,7 @@ int spufs_handle_class1(struct spu_context *ctx)
 	if (ctx->state == SPU_STATE_RUNNABLE)
 		ctx->spu->stats.hash_flt++;
 
-	/* we must not hold the lock when entering spu_handle_mm_fault */
+	/* we must not hold the lock when entering copro_handle_mm_fault */
 	spu_release(ctx);
 
 	access = (_PAGE_PRESENT | _PAGE_USER);
@@ -149,7 +149,7 @@ int spufs_handle_class1(struct spu_context *ctx)
 
 	/* hashing failed, so try the actual fault handler */
 	if (ret)
-		ret = spu_handle_mm_fault(current->mm, ea, dsisr, &flt);
+		ret = copro_handle_mm_fault(current->mm, ea, dsisr, &flt);
 
 	/*
 	 * This is nasty: we need the state_mutex for all the bookkeeping even