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-rw-r--r--arch/powerpc/platforms/cell/Makefile2
-rw-r--r--arch/powerpc/platforms/cell/spu_fault.c98
-rw-r--r--arch/powerpc/platforms/cell/spufs/Makefile2
-rw-r--r--arch/powerpc/platforms/cell/spufs/fault.c71
-rw-r--r--arch/powerpc/platforms/cell/spufs/lscsa_alloc.c2
-rw-r--r--arch/powerpc/platforms/cell/spufs/sched.c32
-rw-r--r--arch/powerpc/platforms/cell/spufs/spufs.h47
-rw-r--r--arch/powerpc/platforms/cell/spufs/switch.c4
8 files changed, 147 insertions, 111 deletions
diff --git a/arch/powerpc/platforms/cell/Makefile b/arch/powerpc/platforms/cell/Makefile
index 61d12f18303..3cd565a04d0 100644
--- a/arch/powerpc/platforms/cell/Makefile
+++ b/arch/powerpc/platforms/cell/Makefile
@@ -19,7 +19,7 @@ spu-manage-$(CONFIG_PPC_CELLEB) += spu_manage.o
spu-manage-$(CONFIG_PPC_CELL_NATIVE) += spu_manage.o
obj-$(CONFIG_SPU_BASE) += spu_callbacks.o spu_base.o \
- spu_syscalls.o \
+ spu_syscalls.o spu_fault.o \
$(spu-priv1-y) \
$(spu-manage-y) \
spufs/
diff --git a/arch/powerpc/platforms/cell/spu_fault.c b/arch/powerpc/platforms/cell/spu_fault.c
new file mode 100644
index 00000000000..c8b1cd42905
--- /dev/null
+++ b/arch/powerpc/platforms/cell/spu_fault.c
@@ -0,0 +1,98 @@
+/*
+ * 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/module.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 0
+ if (!IS_VALID_EA(ea)) {
+ return -EFAULT;
+ }
+#endif /* XXX */
+ if (mm == NULL) {
+ return -EFAULT;
+ }
+ if (mm->pgd == NULL) {
+ return -EFAULT;
+ }
+
+ down_read(&mm->mmap_sem);
+ vma = find_vma(mm, ea);
+ if (!vma)
+ goto bad_area;
+ if (vma->vm_start <= ea)
+ goto good_area;
+ if (!(vma->vm_flags & VM_GROWSDOWN))
+ goto bad_area;
+ if (expand_stack(vma, ea))
+ goto bad_area;
+good_area:
+ is_write = dsisr & MFC_DSISR_ACCESS_PUT;
+ if (is_write) {
+ if (!(vma->vm_flags & VM_WRITE))
+ goto bad_area;
+ } else {
+ if (dsisr & MFC_DSISR_ACCESS_DENIED)
+ goto bad_area;
+ if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
+ goto bad_area;
+ }
+ ret = 0;
+ *flt = handle_mm_fault(mm, vma, ea, is_write);
+ if (unlikely(*flt & VM_FAULT_ERROR)) {
+ if (*flt & VM_FAULT_OOM) {
+ ret = -ENOMEM;
+ goto bad_area;
+ } else if (*flt & VM_FAULT_SIGBUS) {
+ ret = -EFAULT;
+ goto bad_area;
+ }
+ BUG();
+ }
+ if (*flt & VM_FAULT_MAJOR)
+ current->maj_flt++;
+ else
+ current->min_flt++;
+ up_read(&mm->mmap_sem);
+ return ret;
+
+bad_area:
+ up_read(&mm->mmap_sem);
+ return -EFAULT;
+}
+EXPORT_SYMBOL_GPL(spu_handle_mm_fault);
diff --git a/arch/powerpc/platforms/cell/spufs/Makefile b/arch/powerpc/platforms/cell/spufs/Makefile
index 328afcf8950..d3a349fb42e 100644
--- a/arch/powerpc/platforms/cell/spufs/Makefile
+++ b/arch/powerpc/platforms/cell/spufs/Makefile
@@ -1,8 +1,8 @@
-obj-y += switch.o fault.o lscsa_alloc.o
obj-$(CONFIG_SPU_FS) += spufs.o
spufs-y += inode.o file.o context.o syscalls.o coredump.o
spufs-y += sched.o backing_ops.o hw_ops.o run.o gang.o
+spufs-y += switch.o fault.o lscsa_alloc.o
# Rules to build switch.o with the help of SPU tool chain
SPU_CROSS := spu-
diff --git a/arch/powerpc/platforms/cell/spufs/fault.c b/arch/powerpc/platforms/cell/spufs/fault.c
index 917eab4be48..0635f292ae1 100644
--- a/arch/powerpc/platforms/cell/spufs/fault.c
+++ b/arch/powerpc/platforms/cell/spufs/fault.c
@@ -28,75 +28,6 @@
#include "spufs.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.
- */
-static 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 0
- if (!IS_VALID_EA(ea)) {
- return -EFAULT;
- }
-#endif /* XXX */
- if (mm == NULL) {
- return -EFAULT;
- }
- if (mm->pgd == NULL) {
- return -EFAULT;
- }
-
- down_read(&mm->mmap_sem);
- vma = find_vma(mm, ea);
- if (!vma)
- goto bad_area;
- if (vma->vm_start <= ea)
- goto good_area;
- if (!(vma->vm_flags & VM_GROWSDOWN))
- goto bad_area;
- if (expand_stack(vma, ea))
- goto bad_area;
-good_area:
- is_write = dsisr & MFC_DSISR_ACCESS_PUT;
- if (is_write) {
- if (!(vma->vm_flags & VM_WRITE))
- goto bad_area;
- } else {
- if (dsisr & MFC_DSISR_ACCESS_DENIED)
- goto bad_area;
- if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
- goto bad_area;
- }
- ret = 0;
- *flt = handle_mm_fault(mm, vma, ea, is_write);
- if (unlikely(*flt & VM_FAULT_ERROR)) {
- if (*flt & VM_FAULT_OOM) {
- ret = -ENOMEM;
- goto bad_area;
- } else if (*flt & VM_FAULT_SIGBUS) {
- ret = -EFAULT;
- goto bad_area;
- }
- BUG();
- }
- if (*flt & VM_FAULT_MAJOR)
- current->maj_flt++;
- else
- current->min_flt++;
- up_read(&mm->mmap_sem);
- return ret;
-
-bad_area:
- up_read(&mm->mmap_sem);
- return -EFAULT;
-}
-
static void spufs_handle_dma_error(struct spu_context *ctx,
unsigned long ea, int type)
{
@@ -138,7 +69,6 @@ void spufs_dma_callback(struct spu *spu, int type)
{
spufs_handle_dma_error(spu->ctx, spu->dar, type);
}
-EXPORT_SYMBOL_GPL(spufs_dma_callback);
/*
* bottom half handler for page faults, we can't do this from
@@ -227,4 +157,3 @@ int spufs_handle_class1(struct spu_context *ctx)
spuctx_switch_state(ctx, SPU_UTIL_SYSTEM);
return ret;
}
-EXPORT_SYMBOL_GPL(spufs_handle_class1);
diff --git a/arch/powerpc/platforms/cell/spufs/lscsa_alloc.c b/arch/powerpc/platforms/cell/spufs/lscsa_alloc.c
index d606e575a20..0e9f325c9ff 100644
--- a/arch/powerpc/platforms/cell/spufs/lscsa_alloc.c
+++ b/arch/powerpc/platforms/cell/spufs/lscsa_alloc.c
@@ -28,6 +28,8 @@
#include <asm/spu_csa.h>
#include <asm/mmu.h>
+#include "spufs.h"
+
static int spu_alloc_lscsa_std(struct spu_state *csa)
{
struct spu_lscsa *lscsa;
diff --git a/arch/powerpc/platforms/cell/spufs/sched.c b/arch/powerpc/platforms/cell/spufs/sched.c
index 0117eb8f6a9..ee80de07c0b 100644
--- a/arch/powerpc/platforms/cell/spufs/sched.c
+++ b/arch/powerpc/platforms/cell/spufs/sched.c
@@ -892,6 +892,38 @@ static int spusched_thread(void *unused)
return 0;
}
+void spuctx_switch_state(struct spu_context *ctx,
+ enum spu_utilization_state new_state)
+{
+ unsigned long long curtime;
+ signed long long delta;
+ struct timespec ts;
+ struct spu *spu;
+ enum spu_utilization_state old_state;
+
+ ktime_get_ts(&ts);
+ curtime = timespec_to_ns(&ts);
+ delta = curtime - ctx->stats.tstamp;
+
+ WARN_ON(!mutex_is_locked(&ctx->state_mutex));
+ WARN_ON(delta < 0);
+
+ spu = ctx->spu;
+ old_state = ctx->stats.util_state;
+ ctx->stats.util_state = new_state;
+ ctx->stats.tstamp = curtime;
+
+ /*
+ * Update the physical SPU utilization statistics.
+ */
+ if (spu) {
+ ctx->stats.times[old_state] += delta;
+ spu->stats.times[old_state] += delta;
+ spu->stats.util_state = new_state;
+ spu->stats.tstamp = curtime;
+ }
+}
+
#define LOAD_INT(x) ((x) >> FSHIFT)
#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index 5e92ad32cc9..cce50f317c7 100644
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -307,41 +307,16 @@ struct spufs_coredump_reader {
extern struct spufs_coredump_reader spufs_coredump_read[];
extern int spufs_coredump_num_notes;
-/*
- * This function is a little bit too large for an inline, but
- * as fault.c is built into the kernel we can't move it out of
- * line.
- */
-static inline void spuctx_switch_state(struct spu_context *ctx,
- enum spu_utilization_state new_state)
-{
- unsigned long long curtime;
- signed long long delta;
- struct timespec ts;
- struct spu *spu;
- enum spu_utilization_state old_state;
-
- ktime_get_ts(&ts);
- curtime = timespec_to_ns(&ts);
- delta = curtime - ctx->stats.tstamp;
-
- WARN_ON(!mutex_is_locked(&ctx->state_mutex));
- WARN_ON(delta < 0);
-
- spu = ctx->spu;
- old_state = ctx->stats.util_state;
- ctx->stats.util_state = new_state;
- ctx->stats.tstamp = curtime;
-
- /*
- * Update the physical SPU utilization statistics.
- */
- if (spu) {
- ctx->stats.times[old_state] += delta;
- spu->stats.times[old_state] += delta;
- spu->stats.util_state = new_state;
- spu->stats.tstamp = curtime;
- }
-}
+extern int spu_init_csa(struct spu_state *csa);
+extern void spu_fini_csa(struct spu_state *csa);
+extern int spu_save(struct spu_state *prev, struct spu *spu);
+extern int spu_restore(struct spu_state *new, struct spu *spu);
+extern int spu_switch(struct spu_state *prev, struct spu_state *new,
+ struct spu *spu);
+extern int spu_alloc_lscsa(struct spu_state *csa);
+extern void spu_free_lscsa(struct spu_state *csa);
+
+extern void spuctx_switch_state(struct spu_context *ctx,
+ enum spu_utilization_state new_state);
#endif
diff --git a/arch/powerpc/platforms/cell/spufs/switch.c b/arch/powerpc/platforms/cell/spufs/switch.c
index 8cbc6574820..c9600e8e0e1 100644
--- a/arch/powerpc/platforms/cell/spufs/switch.c
+++ b/arch/powerpc/platforms/cell/spufs/switch.c
@@ -48,6 +48,8 @@
#include <asm/spu_csa.h>
#include <asm/mmu_context.h>
+#include "spufs.h"
+
#include "spu_save_dump.h"
#include "spu_restore_dump.h"
@@ -2187,10 +2189,8 @@ int spu_init_csa(struct spu_state *csa)
return 0;
}
-EXPORT_SYMBOL_GPL(spu_init_csa);
void spu_fini_csa(struct spu_state *csa)
{
spu_free_lscsa(csa);
}
-EXPORT_SYMBOL_GPL(spu_fini_csa);