__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Greybus Host Device
*
* Copyright 2014-2015 Google Inc.
* Copyright 2014-2015 Linaro Ltd.
*/
#ifndef __HD_H
#define __HD_H
#include <linux/types.h>
#include <linux/device.h>
struct gb_host_device;
struct gb_message;
struct gb_hd_driver {
size_t hd_priv_size;
int (*cport_allocate)(struct gb_host_device *hd, int cport_id,
unsigned long flags);
void (*cport_release)(struct gb_host_device *hd, u16 cport_id);
int (*cport_enable)(struct gb_host_device *hd, u16 cport_id,
unsigned long flags);
int (*cport_disable)(struct gb_host_device *hd, u16 cport_id);
int (*cport_connected)(struct gb_host_device *hd, u16 cport_id);
int (*cport_flush)(struct gb_host_device *hd, u16 cport_id);
int (*cport_shutdown)(struct gb_host_device *hd, u16 cport_id,
u8 phase, unsigned int timeout);
int (*cport_quiesce)(struct gb_host_device *hd, u16 cport_id,
size_t peer_space, unsigned int timeout);
int (*cport_clear)(struct gb_host_device *hd, u16 cport_id);
int (*message_send)(struct gb_host_device *hd, u16 dest_cport_id,
struct gb_message *message, gfp_t gfp_mask);
void (*message_cancel)(struct gb_message *message);
int (*latency_tag_enable)(struct gb_host_device *hd, u16 cport_id);
int (*latency_tag_disable)(struct gb_host_device *hd, u16 cport_id);
int (*output)(struct gb_host_device *hd, void *req, u16 size, u8 cmd,
bool async);
};
struct gb_host_device {
struct device dev;
int bus_id;
const struct gb_hd_driver *driver;
struct list_head modules;
struct list_head connections;
struct ida cport_id_map;
/* Number of CPorts supported by the UniPro IP */
size_t num_cports;
/* Host device buffer constraints */
size_t buffer_size_max;
struct gb_svc *svc;
/* Private data for the host driver */
unsigned long hd_priv[] __aligned(sizeof(s64));
};
#define to_gb_host_device(d) container_of(d, struct gb_host_device, dev)
int gb_hd_cport_reserve(struct gb_host_device *hd, u16 cport_id);
void gb_hd_cport_release_reserved(struct gb_host_device *hd, u16 cport_id);
int gb_hd_cport_allocate(struct gb_host_device *hd, int cport_id,
unsigned long flags);
void gb_hd_cport_release(struct gb_host_device *hd, u16 cport_id);
struct gb_host_device *gb_hd_create(struct gb_hd_driver *driver,
struct device *parent,
size_t buffer_size_max,
size_t num_cports);
int gb_hd_add(struct gb_host_device *hd);
void gb_hd_del(struct gb_host_device *hd);
void gb_hd_shutdown(struct gb_host_device *hd);
void gb_hd_put(struct gb_host_device *hd);
int gb_hd_output(struct gb_host_device *hd, void *req, u16 size, u8 cmd,
bool in_irq);
int gb_hd_init(void);
void gb_hd_exit(void);
#endif /* __HD_H */