// SPDX-License-Identifier: GPL-2.0-or-later
/*
* SPU file system -- file contents
*
* (C) Copyright IBM Deutschland Entwicklung GmbH 2005
*
* Author: Arnd Bergmann <[email protected]>
*/
#undef DEBUG
#include <linux/coredump.h>
#include <linux/fs.h>
#include <linux/ioctl.h>
#include <linux/export.h>
#include <linux/pagemap.h>
#include <linux/poll.h>
#include <linux/ptrace.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <asm/time.h>
#include <asm/spu.h>
#include <asm/spu_info.h>
#include <linux/uaccess.h>
#include "spufs.h"
#include "sputrace.h"
#define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000)
/* Simple attribute files */
struct spufs_attr {
int (*get)(void *, u64 *);
int (*set)(void *, u64);
char get_buf[24]; /* enough to store a u64 and "\n\0" */
char set_buf[24];
void *data;
const char *fmt; /* format for read operation */
struct mutex mutex; /* protects access to these buffers */
};
static int spufs_attr_open(struct inode *inode, struct file *file,
int (*get)(void *, u64 *), int (*set)(void *, u64),
const char *fmt)
{
struct spufs_attr *attr;
attr = kmalloc(sizeof(*attr), GFP_KERNEL);
if (!attr)
return -ENOMEM;
attr->get = get;
attr->set = set;
attr->data = inode->i_private;
attr->fmt = fmt;
mutex_init(&attr->mutex);
file->private_data = attr;
return nonseekable_open(inode, file);
}
static int spufs_attr_release(struct inode *inode, struct file *file)
{
kfree(file->private_data);
return 0;
}
static ssize_t spufs_attr_read(struct file *file, char __user *buf,
size_t len, loff_t *ppos)
{
struct spufs_attr *attr;
size_t size;
ssize_t ret;
attr = file->private_data;
if (!attr->get)
return -EACCES;
ret = mutex_lock_interruptible(&attr->mutex);
if (ret)
return ret;
if (*ppos) { /* continued read */
size = strlen(attr->get_buf);
} else { /* first read */
u64 val;
ret = attr->get(attr->data, &val);
if (ret)
goto out;
size = scnprintf(attr->get_buf, sizeof(attr->get_buf),
attr->fmt, (unsigned long long)val);
}
ret = simple_read_from_buffer(buf, len, ppos, attr->get_buf, size);
out:
mutex_unlock(&attr->mutex);
return ret;
}
static ssize_t spufs_attr_write(struct file *file, const char __user *buf,
size_t len, loff_t *ppos)
{
struct spufs_attr *attr;
u64 val;
size_t size;
ssize_t ret;
attr = file->private_data;
if (!attr->set)
return -EACCES;
ret = mutex_lock_interruptible(&attr->mutex);
if (ret)
return ret;
ret = -EFAULT;
size = min(sizeof(attr->set_buf) - 1, len);
if (copy_from_user(attr->set_buf, buf, size))
goto out;
ret = len; /* claim we got the whole input */
attr->set_buf[size] = '\0';
val = simple_strtol(attr->set_buf, NULL, 0);
attr->set(attr->data, val);
out:
mutex_unlock(&attr->mutex);
return ret;
}
static ssize_t spufs_dump_emit(struct coredump_params *cprm, void *buf,
size_t size)
{
if (!dump_emit(cprm, buf, size))
return -EIO;
return size;
}
#define DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__fops, __get, __set, __fmt) \
static int __fops ## _open(struct inode *inode, struct file *file) \
{ \
__simple_attr_check_format(__fmt, 0ull); \
return spufs_attr_open(inode, file, __get, __set, __fmt); \
} \
static const struct file_operations __fops = { \
.open = __fops ## _open, \
.release = spufs_attr_release, \
.read = spufs_attr_read, \
.write = spufs_attr_write, \
.llseek = generic_file_llseek, \
};
static int
spufs_mem_open(struct inode *inode, struct file *file)
{
struct spufs_inode_info *i = SPUFS_I(inode);
struct spu_context *ctx = i->i_ctx;
mutex_lock(&ctx->mapping_lock);
file->private_data = ctx;
if (!i->i_openers++)
ctx->local_store = inode->i_mapping;
mutex_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;
mutex_lock(&ctx->mapping_lock);
if (!--i->i_openers)
ctx->local_store = NULL;
mutex_unlock(&ctx->mapping_lock);
return 0;
}
static ssize_t
spufs_mem_dump(struct spu_context *ctx, struct coredump_params *cprm)
{
return spufs_dump_emit(cprm, ctx->ops->get_ls(ctx), LS_SIZE);
}
static ssize_t
spufs_mem_read(struct file *file, char __user *buffer,
size_t size, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
ssize_t ret;
ret = spu_acquire(ctx);
if (ret)
return ret;
ret = simple_read_from_buffer(buffer, size, pos, ctx->ops->get_ls(ctx),
LS_SIZE);
spu_release(ctx);
return ret;
}
static ssize_t
spufs_mem_write(struct file *file, const char __user *buffer,
size_t size, loff_t *ppos)
{
struct spu_context *ctx = file->private_data;
char *local_store;
loff_t pos = *ppos;
int ret;
if (pos > LS_SIZE)
return -EFBIG;
ret = spu_acquire(ctx);
if (ret)
return ret;
local_store = ctx->ops->get_ls(ctx);
size = simple_write_to_buffer(local_store, LS_SIZE, ppos, buffer, size);
spu_release(ctx);
return size;
}
static vm_fault_t
spufs_mem_mmap_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct spu_context *ctx = vma->vm_file->private_data;
unsigned long pfn, offset;
vm_fault_t ret;
offset = vmf->pgoff << PAGE_SHIFT;
if (offset >= LS_SIZE)
return VM_FAULT_SIGBUS;
pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n",
vmf->address, offset);
if (spu_acquire(ctx))
return VM_FAULT_NOPAGE;
if (ctx->state == SPU_STATE_SAVED) {
vma->vm_page_prot = pgprot_cached(vma->vm_page_prot);
pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset);
} else {
vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot);
pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT;
}
ret = vmf_insert_pfn(vma, vmf->address, pfn);
spu_release(ctx);
return ret;
}
static int spufs_mem_mmap_access(struct vm_area_struct *vma,
unsigned long address,
void *buf, int len, int write)
{
struct spu_context *ctx = vma->vm_file->private_data;
unsigned long offset = address - vma->vm_start;
char *local_store;
if (write && !(vma->vm_flags & VM_WRITE))
return -EACCES;
if (spu_acquire(ctx))
return -EINTR;
if ((offset + len) > vma->vm_end)
len = vma->vm_end - offset;
local_store = ctx->ops->get_ls(ctx);
if (write)
memcpy_toio(local_store + offset, buf, len);
else
memcpy_fromio(buf, local_store + offset, len);
spu_release(ctx);
return len;
}
static const struct vm_operations_struct spufs_mem_mmap_vmops = {
.fault = spufs_mem_mmap_fault,
.access = spufs_mem_mmap_access,
};
static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma)
{
if (!(vma->vm_flags & VM_SHARED))
return -EINVAL;
vm_flags_set(vma, VM_IO | VM_PFNMAP);
vma->vm_page_prot = pgprot_noncached_wc(vma->vm_page_prot);
vma->vm_ops = &spufs_mem_mmap_vmops;
return 0;
}
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,
.mmap = spufs_mem_mmap,
};
static vm_fault_t spufs_ps_fault(struct vm_fault *vmf,
unsigned long ps_offs,
unsigned long ps_size)
{
struct spu_context *ctx = vmf->vma->vm_file->private_data;
unsigned long area, offset = vmf->pgoff << PAGE_SHIFT;
int err = 0;
vm_fault_t ret = VM_FAULT_NOPAGE;
spu_context_nospu_trace(spufs_ps_fault__enter, ctx);
if (offset >= ps_size)
return VM_FAULT_SIGBUS;
if (fatal_signal_pending(current))
return VM_FAULT_SIGBUS;
/*
* Because we release the mmap_lock, the context may be destroyed while
* we're in spu_wait. Grab an extra reference so it isn't destroyed
* in the meantime.
*/
get_spu_context(ctx);
/*
* We have to wait for context to be loaded before we have
* pages to hand out to the user, but we don't want to wait
* with the mmap_lock held.
* It is possible to drop the mmap_lock here, but then we need
* to return VM_FAULT_NOPAGE because the mappings may have
* hanged.
*/
if (spu_acquire(ctx))
goto refault;
if (ctx->state == SPU_STATE_SAVED) {
mmap_read_unlock(current->mm);
spu_context_nospu_trace(spufs_ps_fault__sleep, ctx);
err = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE);
spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu);
mmap_read_lock(current->mm);
} else {
area = ctx->spu->problem_phys + ps_offs;
ret = vmf_insert_pfn(vmf->vma, vmf->address,
(area + offset) >> PAGE_SHIFT);
spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu);
}
if (!err)
spu_release(ctx);
refault:
put_spu_context(ctx);
return ret;
}
#if SPUFS_MMAP_4K
static vm_fault_t spufs_cntl_mmap_fault(struct vm_fault *vmf)
{
return spufs_ps_fault(vmf, 0x4000, SPUFS_CNTL_MAP_SIZE);
}
static const struct vm_operations_struct spufs_cntl_mmap_vmops = {
.fault = spufs_cntl_mmap_fault,
};
/*
* mmap support for problem state control area [0x4000 - 0x4fff].
*/
static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma)
{
if (!(vma->vm_flags & VM_SHARED))
return -EINVAL;
vm_flags_set(vma, VM_IO | VM_PFNMAP);
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_cntl_mmap_vmops;
return 0;
}
#else /* SPUFS_MMAP_4K */
#define spufs_cntl_mmap NULL
#endif /* !SPUFS_MMAP_4K */
static int spufs_cntl_get(void *data, u64 *val)
{
struct spu_context *ctx = data;
int ret;
ret = spu_acquire(ctx);
if (ret)
return ret;
*val = ctx->ops->status_read(ctx);
spu_release(ctx);
return 0;
}
static int spufs_cntl_set(void *data, u64 val)
{
struct spu_context *ctx = data;
int ret;
ret = spu_acquire(ctx);
if (ret)
return ret;
ctx->ops->runcntl_write(ctx, val);
spu_release(ctx);
return 0;
}
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;
mutex_lock(&ctx->mapping_lock);
file->private_data = ctx;
if (!i->i_openers++)
ctx->cntl = inode->i_mapping;
mutex_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_release(inode, file);
mutex_lock(&ctx->mapping_lock);
if (!--i->i_openers)
ctx->cntl = NULL;
mutex_unlock(&ctx->mapping_lock);
return 0;
}
static const struct file_operations spufs_cntl_fops = {
.open = spufs_cntl_open,
.release = spufs_cntl_release,
.read = simple_attr_read,
.write = simple_attr_write,
.llseek = no_llseek,
.mmap = spufs_cntl_mmap,
};
static int
spufs_regs_open(struct inode *inode, struct file *file)
{
struct spufs_inode_info *i = SPUFS_I(inode);
file->private_data = i->i_ctx;
return 0;
}
static ssize_t
spufs_regs_dump(struct spu_context *ctx, struct coredump_params *cprm)
{
return spufs_dump_emit(cprm, ctx->csa.lscsa->gprs,
sizeof(ctx->csa.lscsa->gprs));
}
static ssize_t
spufs_regs_read(struct file *file, char __user *buffer,
size_t size, loff_t *pos)
{
int ret;
struct spu_context *ctx = file->private_data;
/* pre-check for file position: if we'd return EOF, there's no point
* causing a deschedule */
if (*pos >= sizeof(ctx->csa.lscsa->gprs))
return 0;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
ret = simple_read_from_buffer(buffer, size, pos, ctx->csa.lscsa->gprs,
sizeof(ctx->csa.lscsa->gprs));
spu_release_saved(ctx);
return ret;
}
static ssize_t
spufs_regs_write(struct file *file, const char __user *buffer,
size_t size, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
struct spu_lscsa *lscsa = ctx->csa.lscsa;
int ret;
if (*pos >= sizeof(lscsa->gprs))
return -EFBIG;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
size = simple_write_to_buffer(lscsa->gprs, sizeof(lscsa->gprs), pos,
buffer, size);
spu_release_saved(ctx);
return size;
}
static const struct file_operations spufs_regs_fops = {
.open = spufs_regs_open,
.read = spufs_regs_read,
.write = spufs_regs_write,
.llseek = generic_file_llseek,
};
static ssize_t
spufs_fpcr_dump(struct spu_context *ctx, struct coredump_params *cprm)
{
return spufs_dump_emit(cprm, &ctx->csa.lscsa->fpcr,
sizeof(ctx->csa.lscsa->fpcr));
}
static ssize_t
spufs_fpcr_read(struct file *file, char __user * buffer,
size_t size, loff_t * pos)
{
int ret;
struct spu_context *ctx = file->private_data;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
ret = simple_read_from_buffer(buffer, size, pos, &ctx->csa.lscsa->fpcr,
sizeof(ctx->csa.lscsa->fpcr));
spu_release_saved(ctx);
return ret;
}
static ssize_t
spufs_fpcr_write(struct file *file, const char __user * buffer,
size_t size, loff_t * pos)
{
struct spu_context *ctx = file->private_data;
struct spu_lscsa *lscsa = ctx->csa.lscsa;
int ret;
if (*pos >= sizeof(lscsa->fpcr))
return -EFBIG;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
size = simple_write_to_buffer(&lscsa->fpcr, sizeof(lscsa->fpcr), pos,
buffer, size);
spu_release_saved(ctx);
return size;
}
static const struct file_operations spufs_fpcr_fops = {
.open = spufs_regs_open,
.read = spufs_fpcr_read,
.write = spufs_fpcr_write,
.llseek = generic_file_llseek,
};
/* generic open function for all pipe-like files */
static int spufs_pipe_open(struct inode *inode, struct file *file)
{
struct spufs_inode_info *i = SPUFS_I(inode);
file->private_data = i->i_ctx;
return stream_open(inode, file);
}
/*
* Read as many bytes from the mailbox as possible, until
* one of the conditions becomes true:
*
* - no more data available in the mailbox
* - end of the user provided buffer
* - end of the mapped area
*/
static ssize_t spufs_mbox_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
u32 mbox_data, __user *udata = (void __user *)buf;
ssize_t count;
if (len < 4)
return -EINVAL;
count = spu_acquire(ctx);
if (count)
return count;
for (count = 0; (count + 4) <= len; count += 4, udata++) {
int ret;
ret = ctx->ops->mbox_read(ctx, &mbox_data);
if (ret == 0)
break;
/*
* at the end of the mapped area, we can fault
* but still need to return the data we have
* read successfully so far.
*/
ret = put_user(mbox_data, udata);
if (ret) {
if (!count)
count = -EFAULT;
break;
}
}
spu_release(ctx);
if (!count)
count = -EAGAIN;
return count;
}
static const struct file_operations spufs_mbox_fops = {
.open = spufs_pipe_open,
.read = spufs_mbox_read,
.llseek = no_llseek,
};
static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
ssize_t ret;
u32 mbox_stat;
if (len < 4)
return -EINVAL;
ret = spu_acquire(ctx);
if (ret)
return ret;
mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff;
spu_release(ctx);
if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat))
return -EFAULT;
return 4;
}
static const struct file_operations spufs_mbox_stat_fops = {
.open = spufs_pipe_open,
.read = spufs_mbox_stat_read,
.llseek = no_llseek,
};
/* low-level ibox access function */
size_t spu_ibox_read(struct spu_context *ctx, u32 *data)
{
return ctx->ops->ibox_read(ctx, data);
}
/* interrupt-level ibox callback function. */
void spufs_ibox_callback(struct spu *spu)
{
struct spu_context *ctx = spu->ctx;
if (ctx)
wake_up_all(&ctx->ibox_wq);
}
/*
* Read as many bytes from the interrupt mailbox as possible, until
* one of the conditions becomes true:
*
* - no more data available in the mailbox
* - end of the user provided buffer
* - end of the mapped area
*
* If the file is opened without O_NONBLOCK, we wait here until
* any data is available, but return when we have been able to
* read something.
*/
static ssize_t spufs_ibox_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
u32 ibox_data, __user *udata = (void __user *)buf;
ssize_t count;
if (len < 4)
return -EINVAL;
count = spu_acquire(ctx);
if (count)
goto out;
/* wait only for the first element */
count = 0;
if (file->f_flags & O_NONBLOCK) {
if (!spu_ibox_read(ctx, &ibox_data)) {
count = -EAGAIN;
goto out_unlock;
}
} else {
count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data));
if (count)
goto out;
}
/* if we can't write at all, return -EFAULT */
count = put_user(ibox_data, udata);
if (count)
goto out_unlock;
for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) {
int ret;
ret = ctx->ops->ibox_read(ctx, &ibox_data);
if (ret == 0)
break;
/*
* at the end of the mapped area, we can fault
* but still need to return the data we have
* read successfully so far.
*/
ret = put_user(ibox_data, udata);
if (ret)
break;
}
out_unlock:
spu_release(ctx);
out:
return count;
}
static __poll_t spufs_ibox_poll(struct file *file, poll_table *wait)
{
struct spu_context *ctx = file->private_data;
__poll_t mask;
poll_wait(file, &ctx->ibox_wq, wait);
/*
* For now keep this uninterruptible and also ignore the rule
* that poll should not sleep. Will be fixed later.
*/
mutex_lock(&ctx->state_mutex);
mask = ctx->ops->mbox_stat_poll(ctx, EPOLLIN | EPOLLRDNORM);
spu_release(ctx);
return mask;
}
static const struct file_operations spufs_ibox_fops = {
.open = spufs_pipe_open,
.read = spufs_ibox_read,
.poll = spufs_ibox_poll,
.llseek = no_llseek,
};
static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
ssize_t ret;
u32 ibox_stat;
if (len < 4)
return -EINVAL;
ret = spu_acquire(ctx);
if (ret)
return ret;
ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff;
spu_release(ctx);
if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat))
return -EFAULT;
return 4;
}
static const struct file_operations spufs_ibox_stat_fops = {
.open = spufs_pipe_open,
.read = spufs_ibox_stat_read,
.llseek = no_llseek,
};
/* low-level mailbox write */
size_t spu_wbox_write(struct spu_context *ctx, u32 data)
{
return ctx->ops->wbox_write(ctx, data);
}
/* interrupt-level wbox callback function. */
void spufs_wbox_callback(struct spu *spu)
{
struct spu_context *ctx = spu->ctx;
if (ctx)
wake_up_all(&ctx->wbox_wq);
}
/*
* Write as many bytes to the interrupt mailbox as possible, until
* one of the conditions becomes true:
*
* - the mailbox is full
* - end of the user provided buffer
* - end of the mapped area
*
* If the file is opened without O_NONBLOCK, we wait here until
* space is available, but return when we have been able to
* write something.
*/
static ssize_t spufs_wbox_write(struct file *file, const char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
u32 wbox_data, __user *udata = (void __user *)buf;
ssize_t count;
if (len < 4)
return -EINVAL;
if (get_user(wbox_data, udata))
return -EFAULT;
count = spu_acquire(ctx);
if (count)
goto out;
/*
* make sure we can at least write one element, by waiting
* in case of !O_NONBLOCK
*/
count = 0;
if (file->f_flags & O_NONBLOCK) {
if (!spu_wbox_write(ctx, wbox_data)) {
count = -EAGAIN;
goto out_unlock;
}
} else {
count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data));
if (count)
goto out;
}
/* write as much as possible */
for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) {
int ret;
ret = get_user(wbox_data, udata);
if (ret)
break;
ret = spu_wbox_write(ctx, wbox_data);
if (ret == 0)
break;
}
out_unlock:
spu_release(ctx);
out:
return count;
}
static __poll_t spufs_wbox_poll(struct file *file, poll_table *wait)
{
struct spu_context *ctx = file->private_data;
__poll_t mask;
poll_wait(file, &ctx->wbox_wq, wait);
/*
* For now keep this uninterruptible and also ignore the rule
* that poll should not sleep. Will be fixed later.
*/
mutex_lock(&ctx->state_mutex);
mask = ctx->ops->mbox_stat_poll(ctx, EPOLLOUT | EPOLLWRNORM);
spu_release(ctx);
return mask;
}
static const struct file_operations spufs_wbox_fops = {
.open = spufs_pipe_open,
.write = spufs_wbox_write,
.poll = spufs_wbox_poll,
.llseek = no_llseek,
};
static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
ssize_t ret;
u32 wbox_stat;
if (len < 4)
return -EINVAL;
ret = spu_acquire(ctx);
if (ret)
return ret;
wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff;
spu_release(ctx);
if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat))
return -EFAULT;
return 4;
}
static const struct file_operations spufs_wbox_stat_fops = {
.open = spufs_pipe_open,
.read = spufs_wbox_stat_read,
.llseek = no_llseek,
};
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;
mutex_lock(&ctx->mapping_lock);
file->private_data = ctx;
if (!i->i_openers++)
ctx->signal1 = inode->i_mapping;
mutex_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;
mutex_lock(&ctx->mapping_lock);
if (!--i->i_openers)
ctx->signal1 = NULL;
mutex_unlock(&ctx->mapping_lock);
return 0;
}
static ssize_t spufs_signal1_dump(struct spu_context *ctx,
struct coredump_params *cprm)
{
if (!ctx->csa.spu_chnlcnt_RW[3])
return 0;
return spufs_dump_emit(cprm, &ctx->csa.spu_chnldata_RW[3],
sizeof(ctx->csa.spu_chnldata_RW[3]));
}
static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf,
size_t len)
{
if (len < sizeof(ctx->csa.spu_chnldata_RW[3]))
return -EINVAL;
if (!ctx->csa.spu_chnlcnt_RW[3])
return 0;
if (copy_to_user(buf, &ctx->csa.spu_chnldata_RW[3],
sizeof(ctx->csa.spu_chnldata_RW[3])))
return -EFAULT;
return sizeof(ctx->csa.spu_chnldata_RW[3]);
}
static ssize_t spufs_signal1_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
int ret;
struct spu_context *ctx = file->private_data;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
ret = __spufs_signal1_read(ctx, buf, len);
spu_release_saved(ctx);
return ret;
}
static ssize_t spufs_signal1_write(struct file *file, const char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx;
ssize_t ret;
u32 data;
ctx = file->private_data;
if (len < 4)
return -EINVAL;
if (copy_from_user(&data, buf, 4))
return -EFAULT;
ret = spu_acquire(ctx);
if (ret)
return ret;
ctx->ops->signal1_write(ctx, data);
spu_release(ctx);
return 4;
}
static vm_fault_t
spufs_signal1_mmap_fault(struct vm_fault *vmf)
{
#if SPUFS_SIGNAL_MAP_SIZE == 0x1000
return spufs_ps_fault(vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE);
#elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
/* For 64k pages, both signal1 and signal2 can be used to mmap the whole
* signal 1 and 2 area
*/
return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
#else
#error unsupported page size
#endif
}
static const struct vm_operations_struct spufs_signal1_mmap_vmops = {
.fault = spufs_signal1_mmap_fault,
};
static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma)
{
if (!(vma->vm_flags & VM_SHARED))
return -EINVAL;
vm_flags_set(vma, VM_IO | VM_PFNMAP);
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_signal1_mmap_vmops;
return 0;
}
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,
.llseek = no_llseek,
};
static const struct file_operations spufs_signal1_nosched_fops = {
.open = spufs_signal1_open,
.release = spufs_signal1_release,
.write = spufs_signal1_write,
.mmap = spufs_signal1_mmap,
.llseek = no_llseek,
};
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;
mutex_lock(&ctx->mapping_lock);
file->private_data = ctx;
if (!i->i_openers++)
ctx->signal2 = inode->i_mapping;
mutex_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;
mutex_lock(&ctx->mapping_lock);
if (!--i->i_openers)
ctx->signal2 = NULL;
mutex_unlock(&ctx->mapping_lock);
return 0;
}
static ssize_t spufs_signal2_dump(struct spu_context *ctx,
struct coredump_params *cprm)
{
if (!ctx->csa.spu_chnlcnt_RW[4])
return 0;
return spufs_dump_emit(cprm, &ctx->csa.spu_chnldata_RW[4],
sizeof(ctx->csa.spu_chnldata_RW[4]));
}
static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf,
size_t len)
{
if (len < sizeof(ctx->csa.spu_chnldata_RW[4]))
return -EINVAL;
if (!ctx->csa.spu_chnlcnt_RW[4])
return 0;
if (copy_to_user(buf, &ctx->csa.spu_chnldata_RW[4],
sizeof(ctx->csa.spu_chnldata_RW[4])))
return -EFAULT;
return sizeof(ctx->csa.spu_chnldata_RW[4]);
}
static ssize_t spufs_signal2_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
int ret;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
ret = __spufs_signal2_read(ctx, buf, len);
spu_release_saved(ctx);
return ret;
}
static ssize_t spufs_signal2_write(struct file *file, const char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx;
ssize_t ret;
u32 data;
ctx = file->private_data;
if (len < 4)
return -EINVAL;
if (copy_from_user(&data, buf, 4))
return -EFAULT;
ret = spu_acquire(ctx);
if (ret)
return ret;
ctx->ops->signal2_write(ctx, data);
spu_release(ctx);
return 4;
}
#if SPUFS_MMAP_4K
static vm_fault_t
spufs_signal2_mmap_fault(struct vm_fault *vmf)
{
#if SPUFS_SIGNAL_MAP_SIZE == 0x1000
return spufs_ps_fault(vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE);
#elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
/* For 64k pages, both signal1 and signal2 can be used to mmap the whole
* signal 1 and 2 area
*/
return spufs_ps_fault(vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
#else
#error unsupported page size
#endif
}
static const struct vm_operations_struct spufs_signal2_mmap_vmops = {
.fault = spufs_signal2_mmap_fault,
};
static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma)
{
if (!(vma->vm_flags & VM_SHARED))
return -EINVAL;
vm_flags_set(vma, VM_IO | VM_PFNMAP);
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_signal2_mmap_vmops;
return 0;
}
#else /* SPUFS_MMAP_4K */
#define spufs_signal2_mmap NULL
#endif /* !SPUFS_MMAP_4K */
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,
.llseek = no_llseek,
};
static const struct file_operations spufs_signal2_nosched_fops = {
.open = spufs_signal2_open,
.release = spufs_signal2_release,
.write = spufs_signal2_write,
.mmap = spufs_signal2_mmap,
.llseek = no_llseek,
};
/*
* This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the
* work of acquiring (or not) the SPU context before calling through
* to the actual get routine. The set routine is called directly.
*/
#define SPU_ATTR_NOACQUIRE 0
#define SPU_ATTR_ACQUIRE 1
#define SPU_ATTR_ACQUIRE_SAVED 2
#define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \
static int __##__get(void *data, u64 *val) \
{ \
struct spu_context *ctx = data; \
int ret = 0; \
\
if (__acquire == SPU_ATTR_ACQUIRE) { \
ret = spu_acquire(ctx); \
if (ret) \
return ret; \
*val = __get(ctx); \
spu_release(ctx); \
} else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \
ret = spu_acquire_saved(ctx); \
if (ret) \
return ret; \
*val = __get(ctx); \
spu_release_saved(ctx); \
} else \
*val = __get(ctx); \
\
return 0; \
} \
DEFINE_SPUFS_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt);
static int spufs_signal1_type_set(void *data, u64 val)
{
struct spu_context *ctx = data;
int ret;
ret = spu_acquire(ctx);
if (ret)
return ret;
ctx->ops->signal1_type_set(ctx, val);
spu_release(ctx);
return 0;
}
static u64 spufs_signal1_type_get(struct spu_context *ctx)
{
return ctx->ops->signal1_type_get(ctx);
}
DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get,
spufs_signal1_type_set, "%llu\n", SPU_ATTR_ACQUIRE);
static int spufs_signal2_type_set(void *data, u64 val)
{
struct spu_context *ctx = data;
int ret;
ret = spu_acquire(ctx);
if (ret)
return ret;
ctx->ops->signal2_type_set(ctx, val);
spu_release(ctx);
return 0;
}
static u64 spufs_signal2_type_get(struct spu_context *ctx)
{
return ctx->ops->signal2_type_get(ctx);
}
DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get,
spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE);
#if SPUFS_MMAP_4K
static vm_fault_t
spufs_mss_mmap_fault(struct vm_fault *vmf)
{
return spufs_ps_fault(vmf, 0x0000, SPUFS_MSS_MAP_SIZE);
}
static const struct vm_operations_struct spufs_mss_mmap_vmops = {
.fault = spufs_mss_mmap_fault,
};
/*
* mmap support for problem state MFC DMA area [0x0000 - 0x0fff].
*/
static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma)
{
if (!(vma->vm_flags & VM_SHARED))
return -EINVAL;
vm_flags_set(vma, VM_IO | VM_PFNMAP);
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_mss_mmap_vmops;
return 0;
}
#else /* SPUFS_MMAP_4K */
#define spufs_mss_mmap NULL
#endif /* !SPUFS_MMAP_4K */
static int spufs_mss_open(struct inode *inode, struct file *file)
{
struct spufs_inode_info *i = SPUFS_I(inode);
struct spu_context *ctx = i->i_ctx;
file->private_data = i->i_ctx;
mutex_lock(&ctx->mapping_lock);
if (!i->i_openers++)
ctx->mss = inode->i_mapping;
mutex_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;
mutex_lock(&ctx->mapping_lock);
if (!--i->i_openers)
ctx->mss = NULL;
mutex_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,
.llseek = no_llseek,
};
static vm_fault_t
spufs_psmap_mmap_fault(struct vm_fault *vmf)
{
return spufs_ps_fault(vmf, 0x0000, SPUFS_PS_MAP_SIZE);
}
static const struct vm_operations_struct spufs_psmap_mmap_vmops = {
.fault = spufs_psmap_mmap_fault,
};
/*
* mmap support for full problem state area [0x00000 - 0x1ffff].
*/
static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma)
{
if (!(vma->vm_flags & VM_SHARED))
return -EINVAL;
vm_flags_set(vma, VM_IO | VM_PFNMAP);
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_psmap_mmap_vmops;
return 0;
}
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;
mutex_lock(&ctx->mapping_lock);
file->private_data = i->i_ctx;
if (!i->i_openers++)
ctx->psmap = inode->i_mapping;
mutex_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;
mutex_lock(&ctx->mapping_lock);
if (!--i->i_openers)
ctx->psmap = NULL;
mutex_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,
.llseek = no_llseek,
};
#if SPUFS_MMAP_4K
static vm_fault_t
spufs_mfc_mmap_fault(struct vm_fault *vmf)
{
return spufs_ps_fault(vmf, 0x3000, SPUFS_MFC_MAP_SIZE);
}
static const struct vm_operations_struct spufs_mfc_mmap_vmops = {
.fault = spufs_mfc_mmap_fault,
};
/*
* mmap support for problem state MFC DMA area [0x0000 - 0x0fff].
*/
static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma)
{
if (!(vma->vm_flags & VM_SHARED))
return -EINVAL;
vm_flags_set(vma, VM_IO | VM_PFNMAP);
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &spufs_mfc_mmap_vmops;
return 0;
}
#else /* SPUFS_MMAP_4K */
#define spufs_mfc_mmap NULL
#endif /* !SPUFS_MMAP_4K */
static int spufs_mfc_open(struct inode *inode, struct file *file)
{
struct spufs_inode_info *i = SPUFS_I(inode);
struct spu_context *ctx = i->i_ctx;
/* we don't want to deal with DMA into other processes */
if (ctx->owner != current->mm)
return -EINVAL;
if (atomic_read(&inode->i_count) != 1)
return -EBUSY;
mutex_lock(&ctx->mapping_lock);
file->private_data = ctx;
if (!i->i_openers++)
ctx->mfc = inode->i_mapping;
mutex_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;
mutex_lock(&ctx->mapping_lock);
if (!--i->i_openers)
ctx->mfc = NULL;
mutex_unlock(&ctx->mapping_lock);
return 0;
}
/* interrupt-level mfc callback function. */
void spufs_mfc_callback(struct spu *spu)
{
struct spu_context *ctx = spu->ctx;
if (ctx)
wake_up_all(&ctx->mfc_wq);
}
static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status)
{
/* See if there is one tag group is complete */
/* FIXME we need locking around tagwait */
*status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait;
ctx->tagwait &= ~*status;
if (*status)
return 1;
/* enable interrupt waiting for any tag group,
may silently fail if interrupts are already enabled */
ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1);
return 0;
}
static ssize_t spufs_mfc_read(struct file *file, char __user *buffer,
size_t size, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
int ret = -EINVAL;
u32 status;
if (size != 4)
goto out;
ret = spu_acquire(ctx);
if (ret)
return ret;
ret = -EINVAL;
if (file->f_flags & O_NONBLOCK) {
status = ctx->ops->read_mfc_tagstatus(ctx);
if (!(status & ctx->tagwait))
ret = -EAGAIN;
else
/* XXX(hch): shouldn't we clear ret here? */
ctx->tagwait &= ~status;
} else {
ret = spufs_wait(ctx->mfc_wq,
spufs_read_mfc_tagstatus(ctx, &status));
if (ret)
goto out;
}
spu_release(ctx);
ret = 4;
if (copy_to_user(buffer, &status, 4))
ret = -EFAULT;
out:
return ret;
}
static int spufs_check_valid_dma(struct mfc_dma_command *cmd)
{
pr_debug("queueing DMA %x %llx %x %x %x\n", cmd->lsa,
cmd->ea, cmd->size, cmd->tag, cmd->cmd);
switch (cmd->cmd) {
case MFC_PUT_CMD:
case MFC_PUTF_CMD:
case MFC_PUTB_CMD:
case MFC_GET_CMD:
case MFC_GETF_CMD:
case MFC_GETB_CMD:
break;
default:
pr_debug("invalid DMA opcode %x\n", cmd->cmd);
return -EIO;
}
if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) {
pr_debug("invalid DMA alignment, ea %llx lsa %x\n",
cmd->ea, cmd->lsa);
return -EIO;
}
switch (cmd->size & 0xf) {
case 1:
break;
case 2:
if (cmd->lsa & 1)
goto error;
break;
case 4:
if (cmd->lsa & 3)
goto error;
break;
case 8:
if (cmd->lsa & 7)
goto error;
break;
case 0:
if (cmd->lsa & 15)
goto error;
break;
error:
default:
pr_debug("invalid DMA alignment %x for size %x\n",
cmd->lsa & 0xf, cmd->size);
return -EIO;
}
if (cmd->size > 16 * 1024) {
pr_debug("invalid DMA size %x\n", cmd->size);
return -EIO;
}
if (cmd->tag & 0xfff0) {
/* we reserve the higher tag numbers for kernel use */
pr_debug("invalid DMA tag\n");
return -EIO;
}
if (cmd->class) {
/* not supported in this version */
pr_debug("invalid DMA class\n");
return -EIO;
}
return 0;
}
static int spu_send_mfc_command(struct spu_context *ctx,
struct mfc_dma_command cmd,
int *error)
{
*error = ctx->ops->send_mfc_command(ctx, &cmd);
if (*error == -EAGAIN) {
/* wait for any tag group to complete
so we have space for the new command */
ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1);
/* try again, because the queue might be
empty again */
*error = ctx->ops->send_mfc_command(ctx, &cmd);
if (*error == -EAGAIN)
return 0;
}
return 1;
}
static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer,
size_t size, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
struct mfc_dma_command cmd;
int ret = -EINVAL;
if (size != sizeof cmd)
goto out;
ret = -EFAULT;
if (copy_from_user(&cmd, buffer, sizeof cmd))
goto out;
ret = spufs_check_valid_dma(&cmd);
if (ret)
goto out;
ret = spu_acquire(ctx);
if (ret)
goto out;
ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE);
if (ret)
goto out;
if (file->f_flags & O_NONBLOCK) {
ret = ctx->ops->send_mfc_command(ctx, &cmd);
} else {
int status;
ret = spufs_wait(ctx->mfc_wq,
spu_send_mfc_command(ctx, cmd, &status));
if (ret)
goto out;
if (status)
ret = status;
}
if (ret)
goto out_unlock;
ctx->tagwait |= 1 << cmd.tag;
ret = size;
out_unlock:
spu_release(ctx);
out:
return ret;
}
static __poll_t spufs_mfc_poll(struct file *file,poll_table *wait)
{
struct spu_context *ctx = file->private_data;
u32 free_elements, tagstatus;
__poll_t mask;
poll_wait(file, &ctx->mfc_wq, wait);
/*
* For now keep this uninterruptible and also ignore the rule
* that poll should not sleep. Will be fixed later.
*/
mutex_lock(&ctx->state_mutex);
ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2);
free_elements = ctx->ops->get_mfc_free_elements(ctx);
tagstatus = ctx->ops->read_mfc_tagstatus(ctx);
spu_release(ctx);
mask = 0;
if (free_elements & 0xffff)
mask |= EPOLLOUT | EPOLLWRNORM;
if (tagstatus & ctx->tagwait)
mask |= EPOLLIN | EPOLLRDNORM;
pr_debug("%s: free %d tagstatus %d tagwait %d\n", __func__,
free_elements, tagstatus, ctx->tagwait);
return mask;
}
static int spufs_mfc_flush(struct file *file, fl_owner_t id)
{
struct spu_context *ctx = file->private_data;
int ret;
ret = spu_acquire(ctx);
if (ret)
return ret;
spu_release(ctx);
return 0;
}
static int spufs_mfc_fsync(struct file *file, loff_t start, loff_t end, int datasync)
{
struct inode *inode = file_inode(file);
int err = file_write_and_wait_range(file, start, end);
if (!err) {
inode_lock(inode);
err = spufs_mfc_flush(file, NULL);
inode_unlock(inode);
}
return err;
}
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,
.flush = spufs_mfc_flush,
.fsync = spufs_mfc_fsync,
.mmap = spufs_mfc_mmap,
.llseek = no_llseek,
};
static int spufs_npc_set(void *data, u64 val)
{
struct spu_context *ctx = data;
int ret;
ret = spu_acquire(ctx);
if (ret)
return ret;
ctx->ops->npc_write(ctx, val);
spu_release(ctx);
return 0;
}
static u64 spufs_npc_get(struct spu_context *ctx)
{
return ctx->ops->npc_read(ctx);
}
DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set,
"0x%llx\n", SPU_ATTR_ACQUIRE);
static int spufs_decr_set(void *data, u64 val)
{
struct spu_context *ctx = data;
struct spu_lscsa *lscsa = ctx->csa.lscsa;
int ret;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
lscsa->decr.slot[0] = (u32) val;
spu_release_saved(ctx);
return 0;
}
static u64 spufs_decr_get(struct spu_context *ctx)
{
struct spu_lscsa *lscsa = ctx->csa.lscsa;
return lscsa->decr.slot[0];
}
DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set,
"0x%llx\n", SPU_ATTR_ACQUIRE_SAVED);
static int spufs_decr_status_set(void *data, u64 val)
{
struct spu_context *ctx = data;
int ret;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
if (val)
ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING;
else
ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING;
spu_release_saved(ctx);
return 0;
}
static u64 spufs_decr_status_get(struct spu_context *ctx)
{
if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING)
return SPU_DECR_STATUS_RUNNING;
else
return 0;
}
DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get,
spufs_decr_status_set, "0x%llx\n",
SPU_ATTR_ACQUIRE_SAVED);
static int spufs_event_mask_set(void *data, u64 val)
{
struct spu_context *ctx = data;
struct spu_lscsa *lscsa = ctx->csa.lscsa;
int ret;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
lscsa->event_mask.slot[0] = (u32) val;
spu_release_saved(ctx);
return 0;
}
static u64 spufs_event_mask_get(struct spu_context *ctx)
{
struct spu_lscsa *lscsa = ctx->csa.lscsa;
return lscsa->event_mask.slot[0];
}
DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get,
spufs_event_mask_set, "0x%llx\n",
SPU_ATTR_ACQUIRE_SAVED);
static u64 spufs_event_status_get(struct spu_context *ctx)
{
struct spu_state *state = &ctx->csa;
u64 stat;
stat = state->spu_chnlcnt_RW[0];
if (stat)
return state->spu_chnldata_RW[0];
return 0;
}
DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get,
NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED)
static int spufs_srr0_set(void *data, u64 val)
{
struct spu_context *ctx = data;
struct spu_lscsa *lscsa = ctx->csa.lscsa;
int ret;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
lscsa->srr0.slot[0] = (u32) val;
spu_release_saved(ctx);
return 0;
}
static u64 spufs_srr0_get(struct spu_context *ctx)
{
struct spu_lscsa *lscsa = ctx->csa.lscsa;
return lscsa->srr0.slot[0];
}
DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set,
"0x%llx\n", SPU_ATTR_ACQUIRE_SAVED)
static u64 spufs_id_get(struct spu_context *ctx)
{
u64 num;
if (ctx->state == SPU_STATE_RUNNABLE)
num = ctx->spu->number;
else
num = (unsigned int)-1;
return num;
}
DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n",
SPU_ATTR_ACQUIRE)
static u64 spufs_object_id_get(struct spu_context *ctx)
{
/* FIXME: Should there really be no locking here? */
return ctx->object_id;
}
static int spufs_object_id_set(void *data, u64 id)
{
struct spu_context *ctx = data;
ctx->object_id = id;
return 0;
}
DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get,
spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE);
static u64 spufs_lslr_get(struct spu_context *ctx)
{
return ctx->csa.priv2.spu_lslr_RW;
}
DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n",
SPU_ATTR_ACQUIRE_SAVED);
static int spufs_info_open(struct inode *inode, struct file *file)
{
struct spufs_inode_info *i = SPUFS_I(inode);
struct spu_context *ctx = i->i_ctx;
file->private_data = ctx;
return 0;
}
static int spufs_caps_show(struct seq_file *s, void *private)
{
struct spu_context *ctx = s->private;
if (!(ctx->flags & SPU_CREATE_NOSCHED))
seq_puts(s, "sched\n");
if (!(ctx->flags & SPU_CREATE_ISOLATE))
seq_puts(s, "step\n");
return 0;
}
static int spufs_caps_open(struct inode *inode, struct file *file)
{
return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx);
}
static const struct file_operations spufs_caps_fops = {
.open = spufs_caps_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static ssize_t spufs_mbox_info_dump(struct spu_context *ctx,
struct coredump_params *cprm)
{
if (!(ctx->csa.prob.mb_stat_R & 0x0000ff))
return 0;
return spufs_dump_emit(cprm, &ctx->csa.prob.pu_mb_R,
sizeof(ctx->csa.prob.pu_mb_R));
}
static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
u32 stat, data;
int ret;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
stat = ctx->csa.prob.mb_stat_R;
data = ctx->csa.prob.pu_mb_R;
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
/* EOF if there's no entry in the mbox */
if (!(stat & 0x0000ff))
return 0;
return simple_read_from_buffer(buf, len, pos, &data, sizeof(data));
}
static const struct file_operations spufs_mbox_info_fops = {
.open = spufs_info_open,
.read = spufs_mbox_info_read,
.llseek = generic_file_llseek,
};
static ssize_t spufs_ibox_info_dump(struct spu_context *ctx,
struct coredump_params *cprm)
{
if (!(ctx->csa.prob.mb_stat_R & 0xff0000))
return 0;
return spufs_dump_emit(cprm, &ctx->csa.priv2.puint_mb_R,
sizeof(ctx->csa.priv2.puint_mb_R));
}
static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
u32 stat, data;
int ret;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
stat = ctx->csa.prob.mb_stat_R;
data = ctx->csa.priv2.puint_mb_R;
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
/* EOF if there's no entry in the ibox */
if (!(stat & 0xff0000))
return 0;
return simple_read_from_buffer(buf, len, pos, &data, sizeof(data));
}
static const struct file_operations spufs_ibox_info_fops = {
.open = spufs_info_open,
.read = spufs_ibox_info_read,
.llseek = generic_file_llseek,
};
static size_t spufs_wbox_info_cnt(struct spu_context *ctx)
{
return (4 - ((ctx->csa.prob.mb_stat_R & 0x00ff00) >> 8)) * sizeof(u32);
}
static ssize_t spufs_wbox_info_dump(struct spu_context *ctx,
struct coredump_params *cprm)
{
return spufs_dump_emit(cprm, &ctx->csa.spu_mailbox_data,
spufs_wbox_info_cnt(ctx));
}
static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
u32 data[ARRAY_SIZE(ctx->csa.spu_mailbox_data)];
int ret, count;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
count = spufs_wbox_info_cnt(ctx);
memcpy(&data, &ctx->csa.spu_mailbox_data, sizeof(data));
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
return simple_read_from_buffer(buf, len, pos, &data,
count * sizeof(u32));
}
static const struct file_operations spufs_wbox_info_fops = {
.open = spufs_info_open,
.read = spufs_wbox_info_read,
.llseek = generic_file_llseek,
};
static void spufs_get_dma_info(struct spu_context *ctx,
struct spu_dma_info *info)
{
int i;
info->dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW;
info->dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0];
info->dma_info_status = ctx->csa.spu_chnldata_RW[24];
info->dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25];
info->dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27];
for (i = 0; i < 16; i++) {
struct mfc_cq_sr *qp = &info->dma_info_command_data[i];
struct mfc_cq_sr *spuqp = &ctx->csa.priv2.spuq[i];
qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW;
qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW;
qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW;
qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW;
}
}
static ssize_t spufs_dma_info_dump(struct spu_context *ctx,
struct coredump_params *cprm)
{
struct spu_dma_info info;
spufs_get_dma_info(ctx, &info);
return spufs_dump_emit(cprm, &info, sizeof(info));
}
static ssize_t spufs_dma_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
struct spu_dma_info info;
int ret;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
spufs_get_dma_info(ctx, &info);
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
return simple_read_from_buffer(buf, len, pos, &info,
sizeof(info));
}
static const struct file_operations spufs_dma_info_fops = {
.open = spufs_info_open,
.read = spufs_dma_info_read,
.llseek = no_llseek,
};
static void spufs_get_proxydma_info(struct spu_context *ctx,
struct spu_proxydma_info *info)
{
int i;
info->proxydma_info_type = ctx->csa.prob.dma_querytype_RW;
info->proxydma_info_mask = ctx->csa.prob.dma_querymask_RW;
info->proxydma_info_status = ctx->csa.prob.dma_tagstatus_R;
for (i = 0; i < 8; i++) {
struct mfc_cq_sr *qp = &info->proxydma_info_command_data[i];
struct mfc_cq_sr *puqp = &ctx->csa.priv2.puq[i];
qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW;
qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW;
qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW;
qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW;
}
}
static ssize_t spufs_proxydma_info_dump(struct spu_context *ctx,
struct coredump_params *cprm)
{
struct spu_proxydma_info info;
spufs_get_proxydma_info(ctx, &info);
return spufs_dump_emit(cprm, &info, sizeof(info));
}
static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf,
size_t len, loff_t *pos)
{
struct spu_context *ctx = file->private_data;
struct spu_proxydma_info info;
int ret;
if (len < sizeof(info))
return -EINVAL;
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
spin_lock(&ctx->csa.register_lock);
spufs_get_proxydma_info(ctx, &info);
spin_unlock(&ctx->csa.register_lock);
spu_release_saved(ctx);
return simple_read_from_buffer(buf, len, pos, &info,
sizeof(info));
}
static const struct file_operations spufs_proxydma_info_fops = {
.open = spufs_info_open,
.read = spufs_proxydma_info_read,
.llseek = no_llseek,
};
static int spufs_show_tid(struct seq_file *s, void *private)
{
struct spu_context *ctx = s->private;
seq_printf(s, "%d\n", ctx->tid);
return 0;
}
static int spufs_tid_open(struct inode *inode, struct file *file)
{
return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx);
}
static const struct file_operations spufs_tid_fops = {
.open = spufs_tid_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static const char *ctx_state_names[] = {
"user", "system", "iowait", "loaded"
};
static unsigned long long spufs_acct_time(struct spu_context *ctx,
enum spu_utilization_state state)
{
unsigned long long time = ctx->stats.times[state];
/*
* In general, utilization statistics are updated by the controlling
* thread as the spu context moves through various well defined
* state transitions, but if the context is lazily loaded its
* utilization statistics are not updated as the controlling thread
* is not tightly coupled with the execution of the spu context. We
* calculate and apply the time delta from the last recorded state
* of the spu context.
*/
if (ctx->spu && ctx->stats.util_state == state) {
time += ktime_get_ns() - ctx->stats.tstamp;
}
return time / NSEC_PER_MSEC;
}
static unsigned long long spufs_slb_flts(struct spu_context *ctx)
{
unsigned long long slb_flts = ctx->stats.slb_flt;
if (ctx->state == SPU_STATE_RUNNABLE) {
slb_flts += (ctx->spu->stats.slb_flt -
ctx->stats.slb_flt_base);
}
return slb_flts;
}
static unsigned long long spufs_class2_intrs(struct spu_context *ctx)
{
unsigned long long class2_intrs = ctx->stats.class2_intr;
if (ctx->state == SPU_STATE_RUNNABLE) {
class2_intrs += (ctx->spu->stats.class2_intr -
ctx->stats.class2_intr_base);
}
return class2_intrs;
}
static int spufs_show_stat(struct seq_file *s, void *private)
{
struct spu_context *ctx = s->private;
int ret;
ret = spu_acquire(ctx);
if (ret)
return ret;
seq_printf(s, "%s %llu %llu %llu %llu "
"%llu %llu %llu %llu %llu %llu %llu %llu\n",
ctx_state_names[ctx->stats.util_state],
spufs_acct_time(ctx, SPU_UTIL_USER),
spufs_acct_time(ctx, SPU_UTIL_SYSTEM),
spufs_acct_time(ctx, SPU_UTIL_IOWAIT),
spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED),
ctx->stats.vol_ctx_switch,
ctx->stats.invol_ctx_switch,
spufs_slb_flts(ctx),
ctx->stats.hash_flt,
ctx->stats.min_flt,
ctx->stats.maj_flt,
spufs_class2_intrs(ctx),
ctx->stats.libassist);
spu_release(ctx);
return 0;
}
static int spufs_stat_open(struct inode *inode, struct file *file)
{
return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx);
}
static const struct file_operations spufs_stat_fops = {
.open = spufs_stat_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static inline int spufs_switch_log_used(struct spu_context *ctx)
{
return (ctx->switch_log->head - ctx->switch_log->tail) %
SWITCH_LOG_BUFSIZE;
}
static inline int spufs_switch_log_avail(struct spu_context *ctx)
{
return SWITCH_LOG_BUFSIZE - spufs_switch_log_used(ctx);
}
static int spufs_switch_log_open(struct inode *inode, struct file *file)
{
struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
int rc;
rc = spu_acquire(ctx);
if (rc)
return rc;
if (ctx->switch_log) {
rc = -EBUSY;
goto out;
}
ctx->switch_log = kmalloc(struct_size(ctx->switch_log, log,
SWITCH_LOG_BUFSIZE), GFP_KERNEL);
if (!ctx->switch_log) {
rc = -ENOMEM;
goto out;
}
ctx->switch_log->head = ctx->switch_log->tail = 0;
init_waitqueue_head(&ctx->switch_log->wait);
rc = 0;
out:
spu_release(ctx);
return rc;
}
static int spufs_switch_log_release(struct inode *inode, struct file *file)
{
struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
int rc;
rc = spu_acquire(ctx);
if (rc)
return rc;
kfree(ctx->switch_log);
ctx->switch_log = NULL;
spu_release(ctx);
return 0;
}
static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n)
{
struct switch_log_entry *p;
p = ctx->switch_log->log + ctx->switch_log->tail % SWITCH_LOG_BUFSIZE;
return snprintf(tbuf, n, "%llu.%09u %d %u %u %llu\n",
(unsigned long long) p->tstamp.tv_sec,
(unsigned int) p->tstamp.tv_nsec,
p->spu_id,
(unsigned int) p->type,
(unsigned int) p->val,
(unsigned long long) p->timebase);
}
static ssize_t spufs_switch_log_read(struct file *file, char __user *buf,
size_t len, loff_t *ppos)
{
struct inode *inode = file_inode(file);
struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
int error = 0, cnt = 0;
if (!buf)
return -EINVAL;
error = spu_acquire(ctx);
if (error)
return error;
while (cnt < len) {
char tbuf[128];
int width;
if (spufs_switch_log_used(ctx) == 0) {
if (cnt > 0) {
/* If there's data ready to go, we can
* just return straight away */
break;
} else if (file->f_flags & O_NONBLOCK) {
error = -EAGAIN;
break;
} else {
/* spufs_wait will drop the mutex and
* re-acquire, but since we're in read(), the
* file cannot be _released (and so
* ctx->switch_log is stable).
*/
error = spufs_wait(ctx->switch_log->wait,
spufs_switch_log_used(ctx) > 0);
/* On error, spufs_wait returns without the
* state mutex held */
if (error)
return error;
/* We may have had entries read from underneath
* us while we dropped the mutex in spufs_wait,
* so re-check */
if (spufs_switch_log_used(ctx) == 0)
continue;
}
}
width = switch_log_sprint(ctx, tbuf, sizeof(tbuf));
if (width < len)
ctx->switch_log->tail =
(ctx->switch_log->tail + 1) %
SWITCH_LOG_BUFSIZE;
else
/* If the record is greater than space available return
* partial buffer (so far) */
break;
error = copy_to_user(buf + cnt, tbuf, width);
if (error)
break;
cnt += width;
}
spu_release(ctx);
return cnt == 0 ? error : cnt;
}
static __poll_t spufs_switch_log_poll(struct file *file, poll_table *wait)
{
struct inode *inode = file_inode(file);
struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
__poll_t mask = 0;
int rc;
poll_wait(file, &ctx->switch_log->wait, wait);
rc = spu_acquire(ctx);
if (rc)
return rc;
if (spufs_switch_log_used(ctx) > 0)
mask |= EPOLLIN;
spu_release(ctx);
return mask;
}
static const struct file_operations spufs_switch_log_fops = {
.open = spufs_switch_log_open,
.read = spufs_switch_log_read,
.poll = spufs_switch_log_poll,
.release = spufs_switch_log_release,
.llseek = no_llseek,
};
/**
* Log a context switch event to a switch log reader.
*
* Must be called with ctx->state_mutex held.
*/
void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx,
u32 type, u32 val)
{
if (!ctx->switch_log)
return;
if (spufs_switch_log_avail(ctx) > 1) {
struct switch_log_entry *p;
p = ctx->switch_log->log + ctx->switch_log->head;
ktime_get_ts64(&p->tstamp);
p->timebase = get_tb();
p->spu_id = spu ? spu->number : -1;
p->type = type;
p->val = val;
ctx->switch_log->head =
(ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE;
}
wake_up(&ctx->switch_log->wait);
}
static int spufs_show_ctx(struct seq_file *s, void *private)
{
struct spu_context *ctx = s->private;
u64 mfc_control_RW;
mutex_lock(&ctx->state_mutex);
if (ctx->spu) {
struct spu *spu = ctx->spu;
struct spu_priv2 __iomem *priv2 = spu->priv2;
spin_lock_irq(&spu->register_lock);
mfc_control_RW = in_be64(&priv2->mfc_control_RW);
spin_unlock_irq(&spu->register_lock);
} else {
struct spu_state *csa = &ctx->csa;
mfc_control_RW = csa->priv2.mfc_control_RW;
}
seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)"
" %c %llx %llx %llx %llx %x %x\n",
ctx->state == SPU_STATE_SAVED ? 'S' : 'R',
ctx->flags,
ctx->sched_flags,
ctx->prio,
ctx->time_slice,
ctx->spu ? ctx->spu->number : -1,
!list_empty(&ctx->rq) ? 'q' : ' ',
ctx->csa.class_0_pending,
ctx->csa.class_0_dar,
ctx->csa.class_1_dsisr,
mfc_control_RW,
ctx->ops->runcntl_read(ctx),
ctx->ops->status_read(ctx));
mutex_unlock(&ctx->state_mutex);
return 0;
}
static int spufs_ctx_open(struct inode *inode, struct file *file)
{
return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx);
}
static const struct file_operations spufs_ctx_fops = {
.open = spufs_ctx_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
const struct spufs_tree_descr spufs_dir_contents[] = {
{ "capabilities", &spufs_caps_fops, 0444, },
{ "mem", &spufs_mem_fops, 0666, LS_SIZE, },
{ "regs", &spufs_regs_fops, 0666, sizeof(struct spu_reg128[128]), },
{ "mbox", &spufs_mbox_fops, 0444, },
{ "ibox", &spufs_ibox_fops, 0444, },
{ "wbox", &spufs_wbox_fops, 0222, },
{ "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), },
{ "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), },
{ "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), },
{ "signal1", &spufs_signal1_fops, 0666, },
{ "signal2", &spufs_signal2_fops, 0666, },
{ "signal1_type", &spufs_signal1_type, 0666, },
{ "signal2_type", &spufs_signal2_type, 0666, },
{ "cntl", &spufs_cntl_fops, 0666, },
{ "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), },
{ "lslr", &spufs_lslr_ops, 0444, },
{ "mfc", &spufs_mfc_fops, 0666, },
{ "mss", &spufs_mss_fops, 0666, },
{ "npc", &spufs_npc_ops, 0666, },
{ "srr0", &spufs_srr0_ops, 0666, },
{ "decr", &spufs_decr_ops, 0666, },
{ "decr_status", &spufs_decr_status_ops, 0666, },
{ "event_mask", &spufs_event_mask_ops, 0666, },
{ "event_status", &spufs_event_status_ops, 0444, },
{ "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, },
{ "phys-id", &spufs_id_ops, 0666, },
{ "object-id", &spufs_object_id_ops, 0666, },
{ "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), },
{ "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), },
{ "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), },
{ "dma_info", &spufs_dma_info_fops, 0444,
sizeof(struct spu_dma_info), },
{ "proxydma_info", &spufs_proxydma_info_fops, 0444,
sizeof(struct spu_proxydma_info)},
{ "tid", &spufs_tid_fops, 0444, },
{ "stat", &spufs_stat_fops, 0444, },
{ "switch_log", &spufs_switch_log_fops, 0444 },
{},
};
const struct spufs_tree_descr spufs_dir_nosched_contents[] = {
{ "capabilities", &spufs_caps_fops, 0444, },
{ "mem", &spufs_mem_fops, 0666, LS_SIZE, },
{ "mbox", &spufs_mbox_fops, 0444, },
{ "ibox", &spufs_ibox_fops, 0444, },
{ "wbox", &spufs_wbox_fops, 0222, },
{ "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), },
{ "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), },
{ "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), },
{ "signal1", &spufs_signal1_nosched_fops, 0222, },
{ "signal2", &spufs_signal2_nosched_fops, 0222, },
{ "signal1_type", &spufs_signal1_type, 0666, },
{ "signal2_type", &spufs_signal2_type, 0666, },
{ "mss", &spufs_mss_fops, 0666, },
{ "mfc", &spufs_mfc_fops, 0666, },
{ "cntl", &spufs_cntl_fops, 0666, },
{ "npc", &spufs_npc_ops, 0666, },
{ "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, },
{ "phys-id", &spufs_id_ops, 0666, },
{ "object-id", &spufs_object_id_ops, 0666, },
{ "tid", &spufs_tid_fops, 0444, },
{ "stat", &spufs_stat_fops, 0444, },
{},
};
const struct spufs_tree_descr spufs_dir_debug_contents[] = {
{ ".ctx", &spufs_ctx_fops, 0444, },
{},
};
const struct spufs_coredump_reader spufs_coredump_read[] = {
{ "regs", spufs_regs_dump, NULL, sizeof(struct spu_reg128[128])},
{ "fpcr", spufs_fpcr_dump, NULL, sizeof(struct spu_reg128) },
{ "lslr", NULL, spufs_lslr_get, 19 },
{ "decr", NULL, spufs_decr_get, 19 },
{ "decr_status", NULL, spufs_decr_status_get, 19 },
{ "mem", spufs_mem_dump, NULL, LS_SIZE, },
{ "signal1", spufs_signal1_dump, NULL, sizeof(u32) },
{ "signal1_type", NULL, spufs_signal1_type_get, 19 },
{ "signal2", spufs_signal2_dump, NULL, sizeof(u32) },
{ "signal2_type", NULL, spufs_signal2_type_get, 19 },
{ "event_mask", NULL, spufs_event_mask_get, 19 },
{ "event_status", NULL, spufs_event_status_get, 19 },
{ "mbox_info", spufs_mbox_info_dump, NULL, sizeof(u32) },
{ "ibox_info", spufs_ibox_info_dump, NULL, sizeof(u32) },
{ "wbox_info", spufs_wbox_info_dump, NULL, 4 * sizeof(u32)},
{ "dma_info", spufs_dma_info_dump, NULL, sizeof(struct spu_dma_info)},
{ "proxydma_info", spufs_proxydma_info_dump,
NULL, sizeof(struct spu_proxydma_info)},
{ "object-id", NULL, spufs_object_id_get, 19 },
{ "npc", NULL, spufs_npc_get, 19 },
{ NULL },
};
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