[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / ieee1394 / nodemgr.h

/*
 * Copyright (C) 2000	Andreas E. Bombe
 *               2001	Ben Collins <bcollins@debian.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef _IEEE1394_NODEMGR_H
#define _IEEE1394_NODEMGR_H

#include <linux/device.h>
#include "csr1212.h"
#include "ieee1394_core.h"
#include "ieee1394_hotplug.h"

/* '1' '3' '9' '4' in ASCII */
#define IEEE1394_BUSID_MAGIC	__constant_cpu_to_be32(0x31333934)

/* This is the start of a Node entry structure. It should be a stable API
 * for which to gather info from the Node Manager about devices attached
 * to the bus.  */
struct bus_options {
	u8	irmc;		/* Iso Resource Manager Capable */
	u8	cmc;		/* Cycle Master Capable */
	u8	isc;		/* Iso Capable */
	u8	bmc;		/* Bus Master Capable */
	u8	pmc;		/* Power Manager Capable (PNP spec) */
	u8	cyc_clk_acc;	/* Cycle clock accuracy */
	u8	max_rom;	/* Maximum block read supported in the CSR */
	u8	generation;	/* Incremented when configrom changes */
	u8	lnkspd;		/* Link speed */
	u16	max_rec;	/* Maximum packet size node can receive */
};


#define UNIT_DIRECTORY_VENDOR_ID		0x01
#define UNIT_DIRECTORY_MODEL_ID			0x02
#define UNIT_DIRECTORY_SPECIFIER_ID		0x04
#define UNIT_DIRECTORY_VERSION			0x08
#define UNIT_DIRECTORY_HAS_LUN_DIRECTORY	0x10
#define UNIT_DIRECTORY_LUN_DIRECTORY		0x20
#define UNIT_DIRECTORY_HAS_LUN			0x40

/*
 * A unit directory corresponds to a protocol supported by the
 * node. If a node supports eg. IP/1394 and AV/C, its config rom has a
 * unit directory for each of these protocols.
 */
struct unit_directory {
	struct node_entry *ne;  /* The node which this directory belongs to */
	octlet_t address;       /* Address of the unit directory on the node */
	u8 flags;		/* Indicates which entries were read */

	quadlet_t vendor_id;
	struct csr1212_keyval *vendor_name_kv;
	const char *vendor_oui;

	quadlet_t model_id;
	struct csr1212_keyval *model_name_kv;
	quadlet_t specifier_id;
	quadlet_t version;

	unsigned int id;

	int ignore_driver;

	int length;		/* Number of quadlets */

	struct device device;

	struct class_device class_dev;

	struct csr1212_keyval *ud_kv;
	u32 lun;                /* logical unit number immediate value */
};

struct node_entry {
	u64 guid;			/* GUID of this node */
	u32 guid_vendor_id;		/* Top 24bits of guid */
	const char *guid_vendor_oui;	/* OUI name of guid vendor id */

	struct hpsb_host *host;		/* Host this node is attached to */
	nodeid_t nodeid;		/* NodeID */
	struct bus_options busopt;	/* Bus Options */
	int needs_probe;
	unsigned int generation;	/* Synced with hpsb generation */

	/* The following is read from the config rom */
	u32 vendor_id;
	struct csr1212_keyval *vendor_name_kv;
	const char *vendor_oui;

	u32 capabilities;
	struct hpsb_tlabel_pool *tpool;

	struct device device;

	struct class_device class_dev;

	/* Means this node is not attached anymore */
	int in_limbo;

	struct csr1212_csr *csr;
};

struct hpsb_protocol_driver {
	/* The name of the driver, e.g. SBP2 or IP1394 */
	const char *name;

	/*
	 * The device id table describing the protocols and/or devices
	 * supported by this driver.  This is used by the nodemgr to
	 * decide if a driver could support a given node, but the
	 * probe function below can implement further protocol
	 * dependent or vendor dependent checking.
	 */
	struct ieee1394_device_id *id_table;

	/*
	 * The update function is called when the node has just
	 * survived a bus reset, i.e. it is still present on the bus.
	 * However, it may be necessary to reestablish the connection
	 * or login into the node again, depending on the protocol. If the
	 * probe fails (returns non-zero), we unbind the driver from this
	 * device.
	 */
	int (*update)(struct unit_directory *ud);

	/* Our LDM structure */
	struct device_driver driver;
};

int hpsb_register_protocol(struct hpsb_protocol_driver *driver);
void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver);

static inline int hpsb_node_entry_valid(struct node_entry *ne)
{
	return ne->generation == get_hpsb_generation(ne->host);
}

/*
 * This will fill in the given, pre-initialised hpsb_packet with the current
 * information from the node entry (host, node ID, generation number).  It will
 * return false if the node owning the GUID is not accessible (and not modify the
 * hpsb_packet) and return true otherwise.
 *
 * Note that packet sending may still fail in hpsb_send_packet if a bus reset
 * happens while you are trying to set up the packet (due to obsolete generation
 * number).  It will at least reliably fail so that you don't accidentally and
 * unknowingly send your packet to the wrong node.
 */
void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *pkt);

int hpsb_node_read(struct node_entry *ne, u64 addr,
		   quadlet_t *buffer, size_t length);
int hpsb_node_write(struct node_entry *ne, u64 addr,
		    quadlet_t *buffer, size_t length);
int hpsb_node_lock(struct node_entry *ne, u64 addr,
		   int extcode, quadlet_t *data, quadlet_t arg);


/* Iterate the hosts, calling a given function with supplied data for each
 * host. */
int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *));


int init_ieee1394_nodemgr(void);
void cleanup_ieee1394_nodemgr(void);


/* The template for a host device */
extern struct device nodemgr_dev_template_host;

/* Bus attributes we export */
extern struct bus_attribute *const fw_bus_attrs[];

#endif /* _IEEE1394_NODEMGR_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (C) 2000 Andreas E. Bombe
	3	* 2001 Ben Collins <bcollins@debian.org>
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software Foundation,
	17	* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	18	*/
	19
	20	#ifndef _IEEE1394_NODEMGR_H
	21	#define _IEEE1394_NODEMGR_H
	22
	23	#include <linux/device.h>
	24	#include "csr1212.h"
	25	#include "ieee1394_core.h"
	26	#include "ieee1394_hotplug.h"
	27
	28	/* '1' '3' '9' '4' in ASCII */
	29	#define IEEE1394_BUSID_MAGIC __constant_cpu_to_be32(0x31333934)
	30
	31	/* This is the start of a Node entry structure. It should be a stable API
	32	* for which to gather info from the Node Manager about devices attached
	33	* to the bus. */
	34	struct bus_options {
	35	u8 irmc; /* Iso Resource Manager Capable */
	36	u8 cmc; /* Cycle Master Capable */
	37	u8 isc; /* Iso Capable */
	38	u8 bmc; /* Bus Master Capable */
	39	u8 pmc; /* Power Manager Capable (PNP spec) */
	40	u8 cyc_clk_acc; /* Cycle clock accuracy */
	41	u8 max_rom; /* Maximum block read supported in the CSR */
	42	u8 generation; /* Incremented when configrom changes */
	43	u8 lnkspd; /* Link speed */
	44	u16 max_rec; /* Maximum packet size node can receive */
	45	};
	46
	47
	48	#define UNIT_DIRECTORY_VENDOR_ID 0x01
	49	#define UNIT_DIRECTORY_MODEL_ID 0x02
	50	#define UNIT_DIRECTORY_SPECIFIER_ID 0x04
	51	#define UNIT_DIRECTORY_VERSION 0x08
	52	#define UNIT_DIRECTORY_HAS_LUN_DIRECTORY 0x10
	53	#define UNIT_DIRECTORY_LUN_DIRECTORY 0x20
	54	#define UNIT_DIRECTORY_HAS_LUN 0x40
	55
	56	/*
	57	* A unit directory corresponds to a protocol supported by the
	58	* node. If a node supports eg. IP/1394 and AV/C, its config rom has a
	59	* unit directory for each of these protocols.
	60	*/
	61	struct unit_directory {
	62	struct node_entry ne; / The node which this directory belongs to */
	63	octlet_t address; /* Address of the unit directory on the node */
	64	u8 flags; /* Indicates which entries were read */
65
66	quadlet_t vendor_id;
67	struct csr1212_keyval *vendor_name_kv;
68	const char *vendor_oui;
69
70	quadlet_t model_id;
71	struct csr1212_keyval *model_name_kv;
72	quadlet_t specifier_id;
73	quadlet_t version;
74
75	unsigned int id;
76
77	int ignore_driver;
78
79	int length; /* Number of quadlets */
80
81	struct device device;
82
83	struct class_device class_dev;
84
85	struct csr1212_keyval *ud_kv;
86	u32 lun; /* logical unit number immediate value */
87	};
88
89	struct node_entry {
90	u64 guid; /* GUID of this node */
91	u32 guid_vendor_id; /* Top 24bits of guid */
92	const char guid_vendor_oui; / OUI name of guid vendor id */
93
94	struct hpsb_host host; / Host this node is attached to */
95	nodeid_t nodeid; /* NodeID */
96	struct bus_options busopt; /* Bus Options */
97	int needs_probe;
98	unsigned int generation; /* Synced with hpsb generation */
99
100	/* The following is read from the config rom */
101	u32 vendor_id;
102	struct csr1212_keyval *vendor_name_kv;
103	const char *vendor_oui;
104
105	u32 capabilities;
106	struct hpsb_tlabel_pool *tpool;
107
108	struct device device;
109
110	struct class_device class_dev;
111
112	/* Means this node is not attached anymore */
113	int in_limbo;
114
115	struct csr1212_csr *csr;
116	};
117
118	struct hpsb_protocol_driver {
119	/* The name of the driver, e.g. SBP2 or IP1394 */
120	const char *name;
121
122	/*
123	* The device id table describing the protocols and/or devices
124	* supported by this driver. This is used by the nodemgr to
125	* decide if a driver could support a given node, but the
126	* probe function below can implement further protocol
127	* dependent or vendor dependent checking.
128	*/
129	struct ieee1394_device_id *id_table;
130
131	/*
132	* The update function is called when the node has just
133	* survived a bus reset, i.e. it is still present on the bus.
134	* However, it may be necessary to reestablish the connection
135	* or login into the node again, depending on the protocol. If the
136	* probe fails (returns non-zero), we unbind the driver from this
137	* device.
138	*/
139	int (update)(struct unit_directory ud);
140
141	/* Our LDM structure */
142	struct device_driver driver;
143	};
144
145	int hpsb_register_protocol(struct hpsb_protocol_driver *driver);
146	void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver);
147
148	static inline int hpsb_node_entry_valid(struct node_entry *ne)
149	{
150	return ne->generation == get_hpsb_generation(ne->host);
151	}
152
1da177e4 LT	153	/*
	154	* This will fill in the given, pre-initialised hpsb_packet with the current
	155	* information from the node entry (host, node ID, generation number). It will
	156	* return false if the node owning the GUID is not accessible (and not modify the
	157	* hpsb_packet) and return true otherwise.
	158	*
	159	* Note that packet sending may still fail in hpsb_send_packet if a bus reset
	160	* happens while you are trying to set up the packet (due to obsolete generation
	161	* number). It will at least reliably fail so that you don't accidentally and
	162	* unknowingly send your packet to the wrong node.
	163	*/
	164	void hpsb_node_fill_packet(struct node_entry ne, struct hpsb_packet pkt);
	165
	166	int hpsb_node_read(struct node_entry *ne, u64 addr,
	167	quadlet_t *buffer, size_t length);
	168	int hpsb_node_write(struct node_entry *ne, u64 addr,
	169	quadlet_t *buffer, size_t length);
	170	int hpsb_node_lock(struct node_entry *ne, u64 addr,
	171	int extcode, quadlet_t *data, quadlet_t arg);
	172
	173
	174	/* Iterate the hosts, calling a given function with supplied data for each
	175	* host. */
	176	int nodemgr_for_each_host(void __data, int (cb)(struct hpsb_host , void ));
	177
	178
	179	int init_ieee1394_nodemgr(void);
	180	void cleanup_ieee1394_nodemgr(void);
	181
	182
	183	/* The template for a host device */
	184	extern struct device nodemgr_dev_template_host;
	185
	186	/* Bus attributes we export */
	187	extern struct bus_attribute *const fw_bus_attrs[];
	188
	189	#endif /* _IEEE1394_NODEMGR_H */