diff options
Diffstat (limited to 'drivers/misc/cxl/file.c')
| -rw-r--r-- | drivers/misc/cxl/file.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/misc/cxl/file.c b/drivers/misc/cxl/file.c index e3f4b69527a9..a30bf285b5bd 100644 --- a/drivers/misc/cxl/file.c +++ b/drivers/misc/cxl/file.c @@ -73,6 +73,11 @@ static int __afu_open(struct inode *inode, struct file *file, bool master) if (!afu->current_mode) goto err_put_afu; + if (!cxl_adapter_link_ok(adapter)) { + rc = -EIO; + goto err_put_afu; + } + if (!(ctx = cxl_context_alloc())) { rc = -ENOMEM; goto err_put_afu; @@ -179,6 +184,8 @@ static long afu_ioctl_start_work(struct cxl_context *ctx, if (work.flags & CXL_START_WORK_AMR) amr = work.amr & mfspr(SPRN_UAMOR); + ctx->mmio_err_ff = !!(work.flags & CXL_START_WORK_ERR_FF); + /* * We grab the PID here and not in the file open to allow for the case * where a process (master, some daemon, etc) has opened the chardev on @@ -238,6 +245,9 @@ long afu_ioctl(struct file *file, unsigned int cmd, unsigned long arg) if (ctx->status == CLOSED) return -EIO; + if (!cxl_adapter_link_ok(ctx->afu->adapter)) + return -EIO; + pr_devel("afu_ioctl\n"); switch (cmd) { case CXL_IOCTL_START_WORK: @@ -251,7 +261,7 @@ long afu_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return -EINVAL; } -long afu_compat_ioctl(struct file *file, unsigned int cmd, +static long afu_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { return afu_ioctl(file, cmd, arg); @@ -265,6 +275,9 @@ int afu_mmap(struct file *file, struct vm_area_struct *vm) if (ctx->status != STARTED) return -EIO; + if (!cxl_adapter_link_ok(ctx->afu->adapter)) + return -EIO; + return cxl_context_iomap(ctx, vm); } @@ -309,6 +322,9 @@ ssize_t afu_read(struct file *file, char __user *buf, size_t count, int rc; DEFINE_WAIT(wait); + if (!cxl_adapter_link_ok(ctx->afu->adapter)) + return -EIO; + if (count < CXL_READ_MIN_SIZE) return -EINVAL; @@ -319,6 +335,11 @@ ssize_t afu_read(struct file *file, char __user *buf, size_t count, if (ctx_event_pending(ctx)) break; + if (!cxl_adapter_link_ok(ctx->afu->adapter)) { + rc = -EIO; + goto out; + } + if (file->f_flags & O_NONBLOCK) { rc = -EAGAIN; goto out; @@ -396,7 +417,7 @@ const struct file_operations afu_fops = { .mmap = afu_mmap, }; -const struct file_operations afu_master_fops = { +static const struct file_operations afu_master_fops = { .owner = THIS_MODULE, .open = afu_master_open, .poll = afu_poll, @@ -519,7 +540,7 @@ int __init cxl_file_init(void) * If these change we really need to update API. Either change some * flags or update API version number CXL_API_VERSION. */ - BUILD_BUG_ON(CXL_API_VERSION != 1); + BUILD_BUG_ON(CXL_API_VERSION != 2); BUILD_BUG_ON(sizeof(struct cxl_ioctl_start_work) != 64); BUILD_BUG_ON(sizeof(struct cxl_event_header) != 8); BUILD_BUG_ON(sizeof(struct cxl_event_afu_interrupt) != 8); |