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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-30 08:10:12 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-30 08:10:12 -0700 |
commit | 24a77daf3d80bddcece044e6dc3675e427eef3f3 (patch) | |
tree | 2c5e0b0bea394d6fe62c5d5857c252e83e48ac48 /arch/powerpc/platforms/cell/spufs/file.c | |
parent | Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 (diff) | |
parent | [POWERPC] Remove dev_dbg redefinition in drivers/ps3/vuart.c (diff) | |
download | linux-dev-24a77daf3d80bddcece044e6dc3675e427eef3f3.tar.xz linux-dev-24a77daf3d80bddcece044e6dc3675e427eef3f3.zip |
Merge branch 'for-2.6.22' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'for-2.6.22' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (255 commits)
[POWERPC] Remove dev_dbg redefinition in drivers/ps3/vuart.c
[POWERPC] remove kernel module option for booke wdt
[POWERPC] Avoid putting cpu node twice
[POWERPC] Spinlock initializer cleanup
[POWERPC] ppc4xx_sgdma needs dma-mapping.h
[POWERPC] arch/powerpc/sysdev/timer.c build fix
[POWERPC] get_property cleanups
[POWERPC] Remove the unused HTDMSOUND driver
[POWERPC] cell: cbe_cpufreq cleanup and crash fix
[POWERPC] Declare enable_kernel_spe in a header
[POWERPC] Add dt_xlate_addr() to bootwrapper
[POWERPC] bootwrapper: CONFIG_ -> CONFIG_DEVICE_TREE
[POWERPC] Don't define a custom bd_t for Xilixn Virtex based boards.
[POWERPC] Add sane defaults for Xilinx EDK generated xparameters files
[POWERPC] Add uartlite boot console driver for the zImage wrapper
[POWERPC] Stop using ppc_sys for Xilinx Virtex boards
[POWERPC] New registration for common Xilinx Virtex ppc405 platform devices
[POWERPC] Merge common virtex header files
[POWERPC] Rework Kconfig dependancies for Xilinx Virtex ppc405 platform
[POWERPC] Clean up cpufreq Kconfig dependencies
...
Diffstat (limited to 'arch/powerpc/platforms/cell/spufs/file.c')
-rw-r--r-- | arch/powerpc/platforms/cell/spufs/file.c | 152 |
1 files changed, 136 insertions, 16 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c index 505266a568d4..d010b2464a98 100644 --- a/arch/powerpc/platforms/cell/spufs/file.c +++ b/arch/powerpc/platforms/cell/spufs/file.c @@ -44,9 +44,25 @@ spufs_mem_open(struct inode *inode, struct file *file) { struct spufs_inode_info *i = SPUFS_I(inode); struct spu_context *ctx = i->i_ctx; + + spin_lock(&ctx->mapping_lock); file->private_data = ctx; - ctx->local_store = inode->i_mapping; - smp_wmb(); + if (!i->i_openers++) + ctx->local_store = inode->i_mapping; + spin_unlock(&ctx->mapping_lock); + return 0; +} + +static int +spufs_mem_release(struct inode *inode, struct file *file) +{ + struct spufs_inode_info *i = SPUFS_I(inode); + struct spu_context *ctx = i->i_ctx; + + spin_lock(&ctx->mapping_lock); + if (!--i->i_openers) + ctx->local_store = NULL; + spin_unlock(&ctx->mapping_lock); return 0; } @@ -149,6 +165,7 @@ spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) static const struct file_operations spufs_mem_fops = { .open = spufs_mem_open, + .release = spufs_mem_release, .read = spufs_mem_read, .write = spufs_mem_write, .llseek = generic_file_llseek, @@ -238,16 +255,33 @@ static int spufs_cntl_open(struct inode *inode, struct file *file) struct spufs_inode_info *i = SPUFS_I(inode); struct spu_context *ctx = i->i_ctx; + spin_lock(&ctx->mapping_lock); file->private_data = ctx; - ctx->cntl = inode->i_mapping; - smp_wmb(); + if (!i->i_openers++) + ctx->cntl = inode->i_mapping; + spin_unlock(&ctx->mapping_lock); return simple_attr_open(inode, file, spufs_cntl_get, spufs_cntl_set, "0x%08lx"); } +static int +spufs_cntl_release(struct inode *inode, struct file *file) +{ + struct spufs_inode_info *i = SPUFS_I(inode); + struct spu_context *ctx = i->i_ctx; + + simple_attr_close(inode, file); + + spin_lock(&ctx->mapping_lock); + if (!--i->i_openers) + ctx->cntl = NULL; + spin_unlock(&ctx->mapping_lock); + return 0; +} + static const struct file_operations spufs_cntl_fops = { .open = spufs_cntl_open, - .release = simple_attr_close, + .release = spufs_cntl_release, .read = simple_attr_read, .write = simple_attr_write, .mmap = spufs_cntl_mmap, @@ -723,12 +757,28 @@ static int spufs_signal1_open(struct inode *inode, struct file *file) { struct spufs_inode_info *i = SPUFS_I(inode); struct spu_context *ctx = i->i_ctx; + + spin_lock(&ctx->mapping_lock); file->private_data = ctx; - ctx->signal1 = inode->i_mapping; - smp_wmb(); + if (!i->i_openers++) + ctx->signal1 = inode->i_mapping; + spin_unlock(&ctx->mapping_lock); return nonseekable_open(inode, file); } +static int +spufs_signal1_release(struct inode *inode, struct file *file) +{ + struct spufs_inode_info *i = SPUFS_I(inode); + struct spu_context *ctx = i->i_ctx; + + spin_lock(&ctx->mapping_lock); + if (!--i->i_openers) + ctx->signal1 = NULL; + spin_unlock(&ctx->mapping_lock); + return 0; +} + static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, size_t len, loff_t *pos) { @@ -821,6 +871,7 @@ static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) static const struct file_operations spufs_signal1_fops = { .open = spufs_signal1_open, + .release = spufs_signal1_release, .read = spufs_signal1_read, .write = spufs_signal1_write, .mmap = spufs_signal1_mmap, @@ -830,12 +881,28 @@ static int spufs_signal2_open(struct inode *inode, struct file *file) { struct spufs_inode_info *i = SPUFS_I(inode); struct spu_context *ctx = i->i_ctx; + + spin_lock(&ctx->mapping_lock); file->private_data = ctx; - ctx->signal2 = inode->i_mapping; - smp_wmb(); + if (!i->i_openers++) + ctx->signal2 = inode->i_mapping; + spin_unlock(&ctx->mapping_lock); return nonseekable_open(inode, file); } +static int +spufs_signal2_release(struct inode *inode, struct file *file) +{ + struct spufs_inode_info *i = SPUFS_I(inode); + struct spu_context *ctx = i->i_ctx; + + spin_lock(&ctx->mapping_lock); + if (!--i->i_openers) + ctx->signal2 = NULL; + spin_unlock(&ctx->mapping_lock); + return 0; +} + static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, size_t len, loff_t *pos) { @@ -932,6 +999,7 @@ static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) static const struct file_operations spufs_signal2_fops = { .open = spufs_signal2_open, + .release = spufs_signal2_release, .read = spufs_signal2_read, .write = spufs_signal2_write, .mmap = spufs_signal2_mmap, @@ -1031,13 +1099,30 @@ static int spufs_mss_open(struct inode *inode, struct file *file) struct spu_context *ctx = i->i_ctx; file->private_data = i->i_ctx; - ctx->mss = inode->i_mapping; - smp_wmb(); + + spin_lock(&ctx->mapping_lock); + if (!i->i_openers++) + ctx->mss = inode->i_mapping; + spin_unlock(&ctx->mapping_lock); return nonseekable_open(inode, file); } +static int +spufs_mss_release(struct inode *inode, struct file *file) +{ + struct spufs_inode_info *i = SPUFS_I(inode); + struct spu_context *ctx = i->i_ctx; + + spin_lock(&ctx->mapping_lock); + if (!--i->i_openers) + ctx->mss = NULL; + spin_unlock(&ctx->mapping_lock); + return 0; +} + static const struct file_operations spufs_mss_fops = { .open = spufs_mss_open, + .release = spufs_mss_release, .mmap = spufs_mss_mmap, }; @@ -1072,14 +1157,30 @@ static int spufs_psmap_open(struct inode *inode, struct file *file) struct spufs_inode_info *i = SPUFS_I(inode); struct spu_context *ctx = i->i_ctx; + spin_lock(&ctx->mapping_lock); file->private_data = i->i_ctx; - ctx->psmap = inode->i_mapping; - smp_wmb(); + if (!i->i_openers++) + ctx->psmap = inode->i_mapping; + spin_unlock(&ctx->mapping_lock); return nonseekable_open(inode, file); } +static int +spufs_psmap_release(struct inode *inode, struct file *file) +{ + struct spufs_inode_info *i = SPUFS_I(inode); + struct spu_context *ctx = i->i_ctx; + + spin_lock(&ctx->mapping_lock); + if (!--i->i_openers) + ctx->psmap = NULL; + spin_unlock(&ctx->mapping_lock); + return 0; +} + static const struct file_operations spufs_psmap_fops = { .open = spufs_psmap_open, + .release = spufs_psmap_release, .mmap = spufs_psmap_mmap, }; @@ -1126,12 +1227,27 @@ static int spufs_mfc_open(struct inode *inode, struct file *file) if (atomic_read(&inode->i_count) != 1) return -EBUSY; + spin_lock(&ctx->mapping_lock); file->private_data = ctx; - ctx->mfc = inode->i_mapping; - smp_wmb(); + if (!i->i_openers++) + ctx->mfc = inode->i_mapping; + spin_unlock(&ctx->mapping_lock); return nonseekable_open(inode, file); } +static int +spufs_mfc_release(struct inode *inode, struct file *file) +{ + struct spufs_inode_info *i = SPUFS_I(inode); + struct spu_context *ctx = i->i_ctx; + + spin_lock(&ctx->mapping_lock); + if (!--i->i_openers) + ctx->mfc = NULL; + spin_unlock(&ctx->mapping_lock); + return 0; +} + /* interrupt-level mfc callback function. */ void spufs_mfc_callback(struct spu *spu) { @@ -1313,7 +1429,10 @@ static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, if (ret) goto out; - spu_acquire_runnable(ctx, 0); + ret = spu_acquire_runnable(ctx, 0); + if (ret) + goto out; + if (file->f_flags & O_NONBLOCK) { ret = ctx->ops->send_mfc_command(ctx, &cmd); } else { @@ -1399,6 +1518,7 @@ static int spufs_mfc_fasync(int fd, struct file *file, int on) static const struct file_operations spufs_mfc_fops = { .open = spufs_mfc_open, + .release = spufs_mfc_release, .read = spufs_mfc_read, .write = spufs_mfc_write, .poll = spufs_mfc_poll, |