From 95099d4622f8cb224d94e314c7a8e0df60b13f87 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:01 +0000
Subject: [PATCH] enable docker ppp
---
kernel/drivers/firmware/arm_scmi/common.h | 134 +++++++++++++++++++++++++++++++++++++++-----
1 files changed, 119 insertions(+), 15 deletions(-)
diff --git a/kernel/drivers/firmware/arm_scmi/common.h b/kernel/drivers/firmware/arm_scmi/common.h
index 72f7790..9643665 100644
--- a/kernel/drivers/firmware/arm_scmi/common.h
+++ b/kernel/drivers/firmware/arm_scmi/common.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* System Control and Management Interface (SCMI) Message Protocol
* driver common header file containing some definitions, structures
@@ -6,16 +6,21 @@
*
* Copyright (C) 2018 ARM Ltd.
*/
+#ifndef _SCMI_COMMON_H
+#define _SCMI_COMMON_H
#include <linux/bitfield.h>
#include <linux/completion.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/scmi_protocol.h>
#include <linux/types.h>
#include <asm/unaligned.h>
+
+#include "notify.h"
#define PROTOCOL_REV_MINOR_MASK GENMASK(15, 0)
#define PROTOCOL_REV_MAJOR_MASK GENMASK(31, 16)
@@ -139,20 +144,92 @@
struct completion *async_done;
};
-void scmi_xfer_put(const struct scmi_handle *h, struct scmi_xfer *xfer);
-int scmi_do_xfer(const struct scmi_handle *h, struct scmi_xfer *xfer);
-int scmi_do_xfer_with_response(const struct scmi_handle *h,
- struct scmi_xfer *xfer);
-int scmi_xfer_get_init(const struct scmi_handle *h, u8 msg_id, u8 prot_id,
- size_t tx_size, size_t rx_size, struct scmi_xfer **p);
+struct scmi_xfer_ops;
+
+/**
+ * struct scmi_protocol_handle - Reference to an initialized protocol instance
+ *
+ * @dev: A reference to the associated SCMI instance device (handle->dev).
+ * @xops: A reference to a struct holding refs to the core xfer operations that
+ * can be used by the protocol implementation to generate SCMI messages.
+ * @set_priv: A method to set protocol private data for this instance.
+ * @get_priv: A method to get protocol private data previously set.
+ *
+ * This structure represents a protocol initialized against specific SCMI
+ * instance and it will be used as follows:
+ * - as a parameter fed from the core to the protocol initialization code so
+ * that it can access the core xfer operations to build and generate SCMI
+ * messages exclusively for the specific underlying protocol instance.
+ * - as an opaque handle fed by an SCMI driver user when it tries to access
+ * this protocol through its own protocol operations.
+ * In this case this handle will be returned as an opaque object together
+ * with the related protocol operations when the SCMI driver tries to access
+ * the protocol.
+ */
+struct scmi_protocol_handle {
+ struct device *dev;
+ const struct scmi_xfer_ops *xops;
+ int (*set_priv)(const struct scmi_protocol_handle *ph, void *priv);
+ void *(*get_priv)(const struct scmi_protocol_handle *ph);
+};
+
+/**
+ * struct scmi_xfer_ops - References to the core SCMI xfer operations.
+ * @version_get: Get this version protocol.
+ * @xfer_get_init: Initialize one struct xfer if any xfer slot is free.
+ * @reset_rx_to_maxsz: Reset rx size to max transport size.
+ * @do_xfer: Do the SCMI transfer.
+ * @do_xfer_with_response: Do the SCMI transfer waiting for a response.
+ * @xfer_put: Free the xfer slot.
+ *
+ * Note that all this operations expect a protocol handle as first parameter;
+ * they then internally use it to infer the underlying protocol number: this
+ * way is not possible for a protocol implementation to forge messages for
+ * another protocol.
+ */
+struct scmi_xfer_ops {
+ int (*version_get)(const struct scmi_protocol_handle *ph, u32 *version);
+ int (*xfer_get_init)(const struct scmi_protocol_handle *ph, u8 msg_id,
+ size_t tx_size, size_t rx_size,
+ struct scmi_xfer **p);
+ void (*reset_rx_to_maxsz)(const struct scmi_protocol_handle *ph,
+ struct scmi_xfer *xfer);
+ int (*do_xfer)(const struct scmi_protocol_handle *ph,
+ struct scmi_xfer *xfer);
+ int (*do_xfer_with_response)(const struct scmi_protocol_handle *ph,
+ struct scmi_xfer *xfer);
+ void (*xfer_put)(const struct scmi_protocol_handle *ph,
+ struct scmi_xfer *xfer);
+};
+
+struct scmi_revision_info *
+scmi_get_revision_area(const struct scmi_protocol_handle *ph);
int scmi_handle_put(const struct scmi_handle *handle);
struct scmi_handle *scmi_handle_get(struct device *dev);
void scmi_set_handle(struct scmi_device *scmi_dev);
-int scmi_version_get(const struct scmi_handle *h, u8 protocol, u32 *version);
-void scmi_setup_protocol_implemented(const struct scmi_handle *handle,
+void scmi_setup_protocol_implemented(const struct scmi_protocol_handle *ph,
u8 *prot_imp);
-int scmi_base_protocol_init(struct scmi_handle *h);
+typedef int (*scmi_prot_init_ph_fn_t)(const struct scmi_protocol_handle *);
+
+/**
+ * struct scmi_protocol - Protocol descriptor
+ * @id: Protocol ID.
+ * @owner: Module reference if any.
+ * @init_instance: Mandatory protocol initialization function.
+ * @deinit_instance: Optional protocol de-initialization function.
+ * @ops: Optional reference to the operations provided by the protocol and
+ * exposed in scmi_protocol.h.
+ * @events: An optional reference to the events supported by this protocol.
+ */
+struct scmi_protocol {
+ const u8 id;
+ struct module *owner;
+ const scmi_prot_init_ph_fn_t init_instance;
+ const scmi_prot_init_ph_fn_t deinit_instance;
+ const void *ops;
+ const struct scmi_protocol_events *events;
+};
int __init scmi_bus_init(void);
void __exit scmi_bus_exit(void);
@@ -160,23 +237,31 @@
#define DECLARE_SCMI_REGISTER_UNREGISTER(func) \
int __init scmi_##func##_register(void); \
void __exit scmi_##func##_unregister(void)
+DECLARE_SCMI_REGISTER_UNREGISTER(base);
DECLARE_SCMI_REGISTER_UNREGISTER(clock);
DECLARE_SCMI_REGISTER_UNREGISTER(perf);
DECLARE_SCMI_REGISTER_UNREGISTER(power);
DECLARE_SCMI_REGISTER_UNREGISTER(reset);
DECLARE_SCMI_REGISTER_UNREGISTER(sensors);
+DECLARE_SCMI_REGISTER_UNREGISTER(voltage);
DECLARE_SCMI_REGISTER_UNREGISTER(system);
-#define DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(id, name) \
+#define DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(name, proto) \
int __init scmi_##name##_register(void) \
{ \
- return scmi_protocol_register((id), &scmi_##name##_protocol_init); \
+ return scmi_protocol_register(&(proto)); \
} \
\
void __exit scmi_##name##_unregister(void) \
{ \
- scmi_protocol_unregister((id)); \
+ scmi_protocol_unregister(&(proto)); \
}
+
+const struct scmi_protocol *scmi_get_protocol(int protocol_id);
+void scmi_put_protocol(int protocol_id);
+
+int scmi_acquire_protocol(const struct scmi_handle *handle, u8 protocol_id);
+void scmi_release_protocol(const struct scmi_handle *handle, u8 protocol_id);
/* SCMI Transport */
/**
@@ -202,6 +287,8 @@
* @send_message: Callback to send a message
* @mark_txdone: Callback to mark tx as done
* @fetch_response: Callback to fetch response
+ * @fetch_notification: Callback to fetch notification
+ * @clear_channel: Callback to clear a channel
* @poll_done: Callback to poll transfer status
*/
struct scmi_transport_ops {
@@ -214,8 +301,16 @@
void (*mark_txdone)(struct scmi_chan_info *cinfo, int ret);
void (*fetch_response)(struct scmi_chan_info *cinfo,
struct scmi_xfer *xfer);
+ void (*fetch_notification)(struct scmi_chan_info *cinfo,
+ size_t max_len, struct scmi_xfer *xfer);
+ void (*clear_channel)(struct scmi_chan_info *cinfo);
bool (*poll_done)(struct scmi_chan_info *cinfo, struct scmi_xfer *xfer);
};
+
+int scmi_request_protocol_device(const struct scmi_device_id *id_table);
+void scmi_unrequest_protocol_device(const struct scmi_device_id *id_table);
+struct scmi_device *scmi_find_child_dev(struct device *parent,
+ int prot_id, const char *name);
/**
* struct scmi_desc - Description of SoC integration
@@ -227,14 +322,14 @@
* @max_msg_size: Maximum size of data per message that can be handled.
*/
struct scmi_desc {
- struct scmi_transport_ops *ops;
+ const struct scmi_transport_ops *ops;
int max_rx_timeout_ms;
int max_msg;
int max_msg_size;
};
extern const struct scmi_desc scmi_mailbox_desc;
-#ifdef CONFIG_HAVE_ARM_SMCCC
+#ifdef CONFIG_HAVE_ARM_SMCCC_DISCOVERY
extern const struct scmi_desc scmi_smc_desc;
#endif
@@ -249,5 +344,14 @@
u32 shmem_read_header(struct scmi_shared_mem __iomem *shmem);
void shmem_fetch_response(struct scmi_shared_mem __iomem *shmem,
struct scmi_xfer *xfer);
+void shmem_fetch_notification(struct scmi_shared_mem __iomem *shmem,
+ size_t max_len, struct scmi_xfer *xfer);
+void shmem_clear_channel(struct scmi_shared_mem __iomem *shmem);
bool shmem_poll_done(struct scmi_shared_mem __iomem *shmem,
struct scmi_xfer *xfer);
+
+void scmi_set_notification_instance_data(const struct scmi_handle *handle,
+ void *priv);
+void *scmi_get_notification_instance_data(const struct scmi_handle *handle);
+
+#endif /* _SCMI_COMMON_H */
--
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