^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Private include for xenbus communications.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2005 Rusty Russell, IBM Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2005 XenSource Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * This program is free software; you can redistribute it and/or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * modify it under the terms of the GNU General Public License version 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * as published by the Free Software Foundation; or, when distributed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * separately from the Linux kernel or incorporated into other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * software packages, subject to the following license:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Permission is hereby granted, free of charge, to any person obtaining a copy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * of this source file (the "Software"), to deal in the Software without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * restriction, including without limitation the rights to use, copy, modify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * merge, publish, distribute, sublicense, and/or sell copies of the Software,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * and to permit persons to whom the Software is furnished to do so, subject to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * the following conditions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * The above copyright notice and this permission notice shall be included in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * all copies or substantial portions of the Software.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * IN THE SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #ifndef _XENBUS_XENBUS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define _XENBUS_XENBUS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/uio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <xen/xenbus.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define XEN_BUS_ID_SIZE 20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct xen_bus_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) char *root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) unsigned int levels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int (*get_bus_id)(char bus_id[XEN_BUS_ID_SIZE], const char *nodename);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) int (*probe)(struct xen_bus_type *bus, const char *type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) const char *dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) bool (*otherend_will_handle)(struct xenbus_watch *watch,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) const char *path, const char *token);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) void (*otherend_changed)(struct xenbus_watch *watch, const char *path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) const char *token);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct bus_type bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) enum xenstore_init {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) XS_UNKNOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) XS_PV,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) XS_HVM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) XS_LOCAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct xs_watch_event {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) unsigned int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct xenbus_watch *handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) const char *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) const char *token;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) char body[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) enum xb_req_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) xb_req_state_queued,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) xb_req_state_wait_reply,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) xb_req_state_got_reply,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) xb_req_state_aborted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct xb_req_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) wait_queue_head_t wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct xsd_sockmsg msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) uint32_t caller_req_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) enum xsd_sockmsg_type type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) char *body;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) const struct kvec *vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int num_vecs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) enum xb_req_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) bool user_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) void (*cb)(struct xb_req_data *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) void *par;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) extern enum xenstore_init xen_store_domain_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) extern const struct attribute_group *xenbus_dev_groups[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) extern struct mutex xs_response_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) extern struct list_head xs_reply_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) extern struct list_head xb_write_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) extern wait_queue_head_t xb_waitq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) extern struct mutex xb_write_mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) int xs_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) int xb_init_comms(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) void xb_deinit_comms(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) int xs_watch_msg(struct xs_watch_event *event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) void xs_request_exit(struct xb_req_data *req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) int xenbus_match(struct device *_dev, struct device_driver *_drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) int xenbus_dev_probe(struct device *_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) int xenbus_dev_remove(struct device *_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int xenbus_register_driver_common(struct xenbus_driver *drv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct xen_bus_type *bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct module *owner,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) const char *mod_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) int xenbus_probe_node(struct xen_bus_type *bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) const char *type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) const char *nodename);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) int xenbus_probe_devices(struct xen_bus_type *bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) void xenbus_dev_changed(const char *node, struct xen_bus_type *bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) int xenbus_dev_suspend(struct device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) int xenbus_dev_resume(struct device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int xenbus_dev_cancel(struct device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) void xenbus_otherend_changed(struct xenbus_watch *watch,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) const char *path, const char *token,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) int ignore_on_shutdown);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) int xenbus_read_otherend_details(struct xenbus_device *xendev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) char *id_node, char *path_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) void xenbus_ring_ops_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int xenbus_dev_request_and_reply(struct xsd_sockmsg *msg, void *par);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) void xenbus_dev_queue_reply(struct xb_req_data *req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) extern unsigned int xb_dev_generation_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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