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path: root/drivers/misc/cxl/file.c
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Diffstat (limited to 'drivers/misc/cxl/file.c')
-rw-r--r--drivers/misc/cxl/file.c48
1 files changed, 37 insertions, 11 deletions
diff --git a/drivers/misc/cxl/file.c b/drivers/misc/cxl/file.c
index 2364bcadb9a9..e3f4b69527a9 100644
--- a/drivers/misc/cxl/file.c
+++ b/drivers/misc/cxl/file.c
@@ -96,7 +96,8 @@ err_put_adapter:
put_device(&adapter->dev);
return rc;
}
-static int afu_open(struct inode *inode, struct file *file)
+
+int afu_open(struct inode *inode, struct file *file)
{
return __afu_open(inode, file, false);
}
@@ -106,7 +107,7 @@ static int afu_master_open(struct inode *inode, struct file *file)
return __afu_open(inode, file, true);
}
-static int afu_release(struct inode *inode, struct file *file)
+int afu_release(struct inode *inode, struct file *file)
{
struct cxl_context *ctx = file->private_data;
@@ -128,7 +129,6 @@ static int afu_release(struct inode *inode, struct file *file)
*/
cxl_context_free(ctx);
- cxl_ctx_put();
return 0;
}
@@ -191,7 +191,7 @@ static long afu_ioctl_start_work(struct cxl_context *ctx,
if ((rc = cxl_attach_process(ctx, false, work.work_element_descriptor,
amr))) {
- afu_release_irqs(ctx);
+ afu_release_irqs(ctx, ctx);
goto out;
}
@@ -212,7 +212,26 @@ static long afu_ioctl_process_element(struct cxl_context *ctx,
return 0;
}
-static long afu_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+static long afu_ioctl_get_afu_id(struct cxl_context *ctx,
+ struct cxl_afu_id __user *upafuid)
+{
+ struct cxl_afu_id afuid = { 0 };
+
+ afuid.card_id = ctx->afu->adapter->adapter_num;
+ afuid.afu_offset = ctx->afu->slice;
+ afuid.afu_mode = ctx->afu->current_mode;
+
+ /* set the flag bit in case the afu is a slave */
+ if (ctx->afu->current_mode == CXL_MODE_DIRECTED && !ctx->master)
+ afuid.flags |= CXL_AFUID_FLAG_SLAVE;
+
+ if (copy_to_user(upafuid, &afuid, sizeof(afuid)))
+ return -EFAULT;
+
+ return 0;
+}
+
+long afu_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct cxl_context *ctx = file->private_data;
@@ -225,17 +244,20 @@ static long afu_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return afu_ioctl_start_work(ctx, (struct cxl_ioctl_start_work __user *)arg);
case CXL_IOCTL_GET_PROCESS_ELEMENT:
return afu_ioctl_process_element(ctx, (__u32 __user *)arg);
+ case CXL_IOCTL_GET_AFU_ID:
+ return afu_ioctl_get_afu_id(ctx, (struct cxl_afu_id __user *)
+ arg);
}
return -EINVAL;
}
-static long afu_compat_ioctl(struct file *file, unsigned int cmd,
+long afu_compat_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
return afu_ioctl(file, cmd, arg);
}
-static int afu_mmap(struct file *file, struct vm_area_struct *vm)
+int afu_mmap(struct file *file, struct vm_area_struct *vm)
{
struct cxl_context *ctx = file->private_data;
@@ -246,7 +268,7 @@ static int afu_mmap(struct file *file, struct vm_area_struct *vm)
return cxl_context_iomap(ctx, vm);
}
-static unsigned int afu_poll(struct file *file, struct poll_table_struct *poll)
+unsigned int afu_poll(struct file *file, struct poll_table_struct *poll)
{
struct cxl_context *ctx = file->private_data;
int mask = 0;
@@ -278,7 +300,7 @@ static inline int ctx_event_pending(struct cxl_context *ctx)
ctx->pending_afu_err || (ctx->status == CLOSED));
}
-static ssize_t afu_read(struct file *file, char __user *buf, size_t count,
+ssize_t afu_read(struct file *file, char __user *buf, size_t count,
loff_t *off)
{
struct cxl_context *ctx = file->private_data;
@@ -359,7 +381,11 @@ out:
return rc;
}
-static const struct file_operations afu_fops = {
+/*
+ * Note: if this is updated, we need to update api.c to patch the new ones in
+ * too
+ */
+const struct file_operations afu_fops = {
.owner = THIS_MODULE,
.open = afu_open,
.poll = afu_poll,
@@ -370,7 +396,7 @@ static const struct file_operations afu_fops = {
.mmap = afu_mmap,
};
-static const struct file_operations afu_master_fops = {
+const struct file_operations afu_master_fops = {
.owner = THIS_MODULE,
.open = afu_master_open,
.poll = afu_poll,