186 lines
5.8 KiB
C
186 lines
5.8 KiB
C
/*
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* Copyright (C) 2000 Andreas E. Bombe
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* 2001 Ben Collins <bcollins@debian.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _IEEE1394_NODEMGR_H
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#define _IEEE1394_NODEMGR_H
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#include <linux/device.h>
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#include <asm/types.h>
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#include "ieee1394_core.h"
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#include "ieee1394_types.h"
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struct csr1212_csr;
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struct csr1212_keyval;
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struct hpsb_host;
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struct ieee1394_device_id;
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/* '1' '3' '9' '4' in ASCII */
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#define IEEE1394_BUSID_MAGIC __constant_cpu_to_be32(0x31333934)
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/* This is the start of a Node entry structure. It should be a stable API
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* for which to gather info from the Node Manager about devices attached
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* to the bus. */
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struct bus_options {
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u8 irmc; /* Iso Resource Manager Capable */
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u8 cmc; /* Cycle Master Capable */
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u8 isc; /* Iso Capable */
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u8 bmc; /* Bus Master Capable */
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u8 pmc; /* Power Manager Capable (PNP spec) */
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u8 cyc_clk_acc; /* Cycle clock accuracy */
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u8 max_rom; /* Maximum block read supported in the CSR */
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u8 generation; /* Incremented when configrom changes */
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u8 lnkspd; /* Link speed */
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u16 max_rec; /* Maximum packet size node can receive */
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};
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#define UNIT_DIRECTORY_VENDOR_ID 0x01
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#define UNIT_DIRECTORY_MODEL_ID 0x02
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#define UNIT_DIRECTORY_SPECIFIER_ID 0x04
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#define UNIT_DIRECTORY_VERSION 0x08
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#define UNIT_DIRECTORY_HAS_LUN_DIRECTORY 0x10
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#define UNIT_DIRECTORY_LUN_DIRECTORY 0x20
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#define UNIT_DIRECTORY_HAS_LUN 0x40
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/*
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* A unit directory corresponds to a protocol supported by the
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* node. If a node supports eg. IP/1394 and AV/C, its config rom has a
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* unit directory for each of these protocols.
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*/
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struct unit_directory {
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struct node_entry *ne; /* The node which this directory belongs to */
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octlet_t address; /* Address of the unit directory on the node */
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u8 flags; /* Indicates which entries were read */
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quadlet_t vendor_id;
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struct csr1212_keyval *vendor_name_kv;
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quadlet_t model_id;
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struct csr1212_keyval *model_name_kv;
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quadlet_t specifier_id;
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quadlet_t version;
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unsigned int id;
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int ignore_driver;
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int length; /* Number of quadlets */
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struct device device;
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struct class_device class_dev;
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struct csr1212_keyval *ud_kv;
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u32 lun; /* logical unit number immediate value */
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};
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struct node_entry {
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u64 guid; /* GUID of this node */
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u32 guid_vendor_id; /* Top 24bits of guid */
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struct hpsb_host *host; /* Host this node is attached to */
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nodeid_t nodeid; /* NodeID */
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struct bus_options busopt; /* Bus Options */
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int needs_probe;
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unsigned int generation; /* Synced with hpsb generation */
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/* The following is read from the config rom */
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u32 vendor_id;
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struct csr1212_keyval *vendor_name_kv;
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u32 capabilities;
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struct device device;
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struct class_device class_dev;
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/* Means this node is not attached anymore */
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int in_limbo;
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struct csr1212_csr *csr;
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};
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struct hpsb_protocol_driver {
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/* The name of the driver, e.g. SBP2 or IP1394 */
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const char *name;
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/*
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* The device id table describing the protocols and/or devices
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* supported by this driver. This is used by the nodemgr to
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* decide if a driver could support a given node, but the
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* probe function below can implement further protocol
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* dependent or vendor dependent checking.
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*/
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struct ieee1394_device_id *id_table;
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/*
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* The update function is called when the node has just
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* survived a bus reset, i.e. it is still present on the bus.
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* However, it may be necessary to reestablish the connection
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* or login into the node again, depending on the protocol. If the
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* probe fails (returns non-zero), we unbind the driver from this
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* device.
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*/
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int (*update)(struct unit_directory *ud);
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/* Our LDM structure */
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struct device_driver driver;
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};
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int __hpsb_register_protocol(struct hpsb_protocol_driver *, struct module *);
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static inline int hpsb_register_protocol(struct hpsb_protocol_driver *driver)
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{
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return __hpsb_register_protocol(driver, THIS_MODULE);
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}
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void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver);
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static inline int hpsb_node_entry_valid(struct node_entry *ne)
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{
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return ne->generation == get_hpsb_generation(ne->host);
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}
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/*
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* This will fill in the given, pre-initialised hpsb_packet with the current
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* information from the node entry (host, node ID, generation number). It will
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* return false if the node owning the GUID is not accessible (and not modify
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* the hpsb_packet) and return true otherwise.
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*
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* Note that packet sending may still fail in hpsb_send_packet if a bus reset
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* happens while you are trying to set up the packet (due to obsolete generation
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* number). It will at least reliably fail so that you don't accidentally and
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* unknowingly send your packet to the wrong node.
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*/
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void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *pkt);
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int hpsb_node_write(struct node_entry *ne, u64 addr,
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quadlet_t *buffer, size_t length);
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/* Iterate the hosts, calling a given function with supplied data for each
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* host. */
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int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *));
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int init_ieee1394_nodemgr(void);
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void cleanup_ieee1394_nodemgr(void);
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/* The template for a host device */
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extern struct device nodemgr_dev_template_host;
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/* Bus attributes we export */
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extern struct bus_attribute *const fw_bus_attrs[];
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#endif /* _IEEE1394_NODEMGR_H */
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