cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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hd.h (2710B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Greybus Host Device
      4 *
      5 * Copyright 2014-2015 Google Inc.
      6 * Copyright 2014-2015 Linaro Ltd.
      7 */
      8
      9#ifndef __HD_H
     10#define __HD_H
     11
     12#include <linux/types.h>
     13#include <linux/device.h>
     14
     15struct gb_host_device;
     16struct gb_message;
     17
     18struct gb_hd_driver {
     19	size_t	hd_priv_size;
     20
     21	int (*cport_allocate)(struct gb_host_device *hd, int cport_id,
     22				unsigned long flags);
     23	void (*cport_release)(struct gb_host_device *hd, u16 cport_id);
     24	int (*cport_enable)(struct gb_host_device *hd, u16 cport_id,
     25				unsigned long flags);
     26	int (*cport_disable)(struct gb_host_device *hd, u16 cport_id);
     27	int (*cport_connected)(struct gb_host_device *hd, u16 cport_id);
     28	int (*cport_flush)(struct gb_host_device *hd, u16 cport_id);
     29	int (*cport_shutdown)(struct gb_host_device *hd, u16 cport_id,
     30				u8 phase, unsigned int timeout);
     31	int (*cport_quiesce)(struct gb_host_device *hd, u16 cport_id,
     32				size_t peer_space, unsigned int timeout);
     33	int (*cport_clear)(struct gb_host_device *hd, u16 cport_id);
     34
     35	int (*message_send)(struct gb_host_device *hd, u16 dest_cport_id,
     36			struct gb_message *message, gfp_t gfp_mask);
     37	void (*message_cancel)(struct gb_message *message);
     38	int (*latency_tag_enable)(struct gb_host_device *hd, u16 cport_id);
     39	int (*latency_tag_disable)(struct gb_host_device *hd, u16 cport_id);
     40	int (*output)(struct gb_host_device *hd, void *req, u16 size, u8 cmd,
     41		      bool async);
     42};
     43
     44struct gb_host_device {
     45	struct device dev;
     46	int bus_id;
     47	const struct gb_hd_driver *driver;
     48
     49	struct list_head modules;
     50	struct list_head connections;
     51	struct ida cport_id_map;
     52
     53	/* Number of CPorts supported by the UniPro IP */
     54	size_t num_cports;
     55
     56	/* Host device buffer constraints */
     57	size_t buffer_size_max;
     58
     59	struct gb_svc *svc;
     60	/* Private data for the host driver */
     61	unsigned long hd_priv[] __aligned(sizeof(s64));
     62};
     63#define to_gb_host_device(d) container_of(d, struct gb_host_device, dev)
     64
     65int gb_hd_cport_reserve(struct gb_host_device *hd, u16 cport_id);
     66void gb_hd_cport_release_reserved(struct gb_host_device *hd, u16 cport_id);
     67int gb_hd_cport_allocate(struct gb_host_device *hd, int cport_id,
     68					unsigned long flags);
     69void gb_hd_cport_release(struct gb_host_device *hd, u16 cport_id);
     70
     71struct gb_host_device *gb_hd_create(struct gb_hd_driver *driver,
     72					struct device *parent,
     73					size_t buffer_size_max,
     74					size_t num_cports);
     75int gb_hd_add(struct gb_host_device *hd);
     76void gb_hd_del(struct gb_host_device *hd);
     77void gb_hd_shutdown(struct gb_host_device *hd);
     78void gb_hd_put(struct gb_host_device *hd);
     79int gb_hd_output(struct gb_host_device *hd, void *req, u16 size, u8 cmd,
     80		 bool in_irq);
     81
     82int gb_hd_init(void);
     83void gb_hd_exit(void);
     84
     85#endif	/* __HD_H */