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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/base/firmware_loader/sysfs.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/base/firmware_loader/sysfs.h')
-rw-r--r--drivers/base/firmware_loader/sysfs.h118
1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/base/firmware_loader/sysfs.h b/drivers/base/firmware_loader/sysfs.h
new file mode 100644
index 0000000000..2060add8ef
--- /dev/null
+++ b/drivers/base/firmware_loader/sysfs.h
@@ -0,0 +1,118 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __FIRMWARE_SYSFS_H
+#define __FIRMWARE_SYSFS_H
+
+#include <linux/device.h>
+
+#include "firmware.h"
+
+MODULE_IMPORT_NS(FIRMWARE_LOADER_PRIVATE);
+
+extern struct firmware_fallback_config fw_fallback_config;
+extern struct device_attribute dev_attr_loading;
+
+#ifdef CONFIG_FW_LOADER_USER_HELPER
+/**
+ * struct firmware_fallback_config - firmware fallback configuration settings
+ *
+ * Helps describe and fine tune the fallback mechanism.
+ *
+ * @force_sysfs_fallback: force the sysfs fallback mechanism to be used
+ * as if one had enabled CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y.
+ * Useful to help debug a CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
+ * functionality on a kernel where that config entry has been disabled.
+ * @ignore_sysfs_fallback: force to disable the sysfs fallback mechanism.
+ * This emulates the behaviour as if we had set the kernel
+ * config CONFIG_FW_LOADER_USER_HELPER=n.
+ * @old_timeout: for internal use
+ * @loading_timeout: the timeout to wait for the fallback mechanism before
+ * giving up, in seconds.
+ */
+struct firmware_fallback_config {
+ unsigned int force_sysfs_fallback;
+ unsigned int ignore_sysfs_fallback;
+ int old_timeout;
+ int loading_timeout;
+};
+
+/* These getters are vetted to use int properly */
+static inline int __firmware_loading_timeout(void)
+{
+ return fw_fallback_config.loading_timeout;
+}
+
+/* These setters are vetted to use int properly */
+static inline void __fw_fallback_set_timeout(int timeout)
+{
+ fw_fallback_config.loading_timeout = timeout;
+}
+#endif
+
+#ifdef CONFIG_FW_LOADER_SYSFS
+int register_sysfs_loader(void);
+void unregister_sysfs_loader(void);
+#if defined(CONFIG_FW_LOADER_USER_HELPER) && defined(CONFIG_SYSCTL)
+int register_firmware_config_sysctl(void);
+void unregister_firmware_config_sysctl(void);
+#else
+static inline int register_firmware_config_sysctl(void)
+{
+ return 0;
+}
+
+static inline void unregister_firmware_config_sysctl(void) { }
+#endif /* CONFIG_FW_LOADER_USER_HELPER && CONFIG_SYSCTL */
+#else /* CONFIG_FW_LOADER_SYSFS */
+static inline int register_sysfs_loader(void)
+{
+ return 0;
+}
+
+static inline void unregister_sysfs_loader(void)
+{
+}
+#endif /* CONFIG_FW_LOADER_SYSFS */
+
+struct fw_sysfs {
+ bool nowait;
+ struct device dev;
+ struct fw_priv *fw_priv;
+ struct firmware *fw;
+ void *fw_upload_priv;
+};
+#define to_fw_sysfs(__dev) container_of_const(__dev, struct fw_sysfs, dev)
+
+void __fw_load_abort(struct fw_priv *fw_priv);
+
+static inline void fw_load_abort(struct fw_sysfs *fw_sysfs)
+{
+ struct fw_priv *fw_priv = fw_sysfs->fw_priv;
+
+ __fw_load_abort(fw_priv);
+}
+
+struct fw_sysfs *
+fw_create_instance(struct firmware *firmware, const char *fw_name,
+ struct device *device, u32 opt_flags);
+
+#ifdef CONFIG_FW_UPLOAD
+extern struct device_attribute dev_attr_status;
+extern struct device_attribute dev_attr_error;
+extern struct device_attribute dev_attr_cancel;
+extern struct device_attribute dev_attr_remaining_size;
+
+int fw_upload_start(struct fw_sysfs *fw_sysfs);
+void fw_upload_free(struct fw_sysfs *fw_sysfs);
+umode_t fw_upload_is_visible(struct kobject *kobj, struct attribute *attr, int n);
+#else
+static inline int fw_upload_start(struct fw_sysfs *fw_sysfs)
+{
+ return 0;
+}
+
+static inline void fw_upload_free(struct fw_sysfs *fw_sysfs)
+{
+}
+#endif
+
+#endif /* __FIRMWARE_SYSFS_H */