| /* |
| * 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 "ieee1394_core.h" |
| #include "ieee1394_hotplug.h" |
| |
| #define CONFIG_ROM_BUS_INFO_LENGTH(q) ((q) >> 24) |
| #define CONFIG_ROM_BUS_CRC_LENGTH(q) (((q) >> 16) & 0xff) |
| #define CONFIG_ROM_BUS_CRC(q) ((q) & 0xffff) |
| |
| #define CONFIG_ROM_ROOT_LENGTH(q) ((q) >> 16) |
| #define CONFIG_ROM_ROOT_CRC(q) ((q) & 0xffff) |
| |
| #define CONFIG_ROM_DIRECTORY_LENGTH(q) ((q) >> 16) |
| #define CONFIG_ROM_DIRECTORY_CRC(q) ((q) & 0xffff) |
| |
| #define CONFIG_ROM_LEAF_LENGTH(q) ((q) >> 16) |
| #define CONFIG_ROM_LEAF_CRC(q) ((q) & 0xffff) |
| |
| #define CONFIG_ROM_DESCRIPTOR_TYPE(q) ((q) >> 24) |
| #define CONFIG_ROM_DESCRIPTOR_SPECIFIER_ID(q) ((q) & 0xffffff) |
| #define CONFIG_ROM_DESCRIPTOR_WIDTH(q) ((q) >> 28) |
| #define CONFIG_ROM_DESCRIPTOR_CHAR_SET(q) (((q) >> 16) & 0xfff) |
| #define CONFIG_ROM_DESCRIPTOR_LANG(q) ((q) & 0xffff) |
| |
| #define CONFIG_ROM_KEY_ID_MASK 0x3f |
| #define CONFIG_ROM_KEY_TYPE_MASK 0xc0 |
| #define CONFIG_ROM_KEY_TYPE_IMMEDIATE 0x00 |
| #define CONFIG_ROM_KEY_TYPE_OFFSET 0x40 |
| #define CONFIG_ROM_KEY_TYPE_LEAF 0x80 |
| #define CONFIG_ROM_KEY_TYPE_DIRECTORY 0xc0 |
| |
| #define CONFIG_ROM_KEY(q) ((q) >> 24) |
| #define CONFIG_ROM_VALUE(q) ((q) & 0xffffff) |
| |
| #define CONFIG_ROM_VENDOR_ID 0x03 |
| #define CONFIG_ROM_MODEL_ID 0x17 |
| #define CONFIG_ROM_NODE_CAPABILITES 0x0C |
| #define CONFIG_ROM_UNIT_DIRECTORY 0xd1 |
| #define CONFIG_ROM_LOGICAL_UNIT_DIRECTORY 0xd4 |
| #define CONFIG_ROM_SPECIFIER_ID 0x12 |
| #define CONFIG_ROM_UNIT_SW_VERSION 0x13 |
| #define CONFIG_ROM_DESCRIPTOR_LEAF 0x81 |
| #define CONFIG_ROM_DESCRIPTOR_DIRECTORY 0xc1 |
| |
| /* '1' '3' '9' '4' in ASCII */ |
| #define IEEE1394_BUSID_MAGIC 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 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_VENDOR_TEXT 0x10 |
| #define UNIT_DIRECTORY_MODEL_TEXT 0x20 |
| #define UNIT_DIRECTORY_HAS_LUN_DIRECTORY 0x40 |
| #define UNIT_DIRECTORY_LUN_DIRECTORY 0x80 |
| |
| /* |
| * 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. |
| * |
| * Unit directories appear on two types of lists: for each node we |
| * maintain a list of the unit directories found in its config rom and |
| * for each driver we maintain a list of the unit directories |
| * (ie. devices) the driver manages. |
| */ |
| 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; |
| const char *vendor_name; |
| const char *vendor_oui; |
| |
| int vendor_name_size; |
| quadlet_t model_id; |
| const char *model_name; |
| int model_name_size; |
| quadlet_t specifier_id; |
| quadlet_t version; |
| |
| struct hpsb_protocol_driver *driver; |
| void *driver_data; |
| |
| /* For linking the nodes managed by the driver, or unmanaged nodes */ |
| struct list_head driver_list; |
| |
| /* For linking directories belonging to a node */ |
| struct list_head node_list; |
| |
| /* for tracking unit versus logical unit */ |
| struct unit_directory *parent; |
| |
| int length; /* Number of quadlets */ |
| |
| /* XXX Must be last in the struct! */ |
| quadlet_t quadlets[0]; |
| }; |
| |
| struct node_entry { |
| struct list_head list; |
| 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 */ |
| unsigned int generation; /* Synced with hpsb generation */ |
| |
| /* The following is read from the config rom */ |
| u32 vendor_id; |
| const char *vendor_name; |
| const char *vendor_oui; |
| |
| u32 capabilities; |
| struct hpsb_tlabel_pool *tpool; |
| struct list_head unit_directories; |
| |
| /* XXX Must be last in the struct! */ |
| quadlet_t quadlets[0]; |
| }; |
| |
| 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 probe function is called when a device is added to the |
| * bus and the nodemgr finds a matching entry in the drivers |
| * device id table or when registering this driver and a |
| * previously unhandled device can be handled. The driver may |
| * decline to handle the device based on further investigation |
| * of the device (or whatever reason) in which case a negative |
| * error code should be returned, otherwise 0 should be |
| * returned. The driver may use the driver_data field in the |
| * unit directory to store per device driver specific data. |
| */ |
| int (*probe)(struct unit_directory *ud); |
| |
| /* |
| * The disconnect function is called when a device is removed |
| * from the bus or if it wasn't possible to read the guid |
| * after the last bus reset. |
| */ |
| void (*disconnect)(struct unit_directory *ud); |
| |
| /* |
| * 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. |
| */ |
| void (*update)(struct unit_directory *ud); |
| |
| /* Driver in list of all registered drivers */ |
| struct list_head list; |
| |
| /* The list of unit directories managed by this driver */ |
| struct list_head unit_directories; |
| }; |
| |
| int hpsb_register_protocol(struct hpsb_protocol_driver *driver); |
| void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver); |
| void hpsb_release_unit_directory(struct unit_directory *ud); |
| |
| static inline int hpsb_node_entry_valid(struct node_entry *ne) |
| { |
| return ne->generation == get_hpsb_generation(ne->host); |
| } |
| |
| /* |
| * Returns a node entry (which has its reference count incremented) or NULL if |
| * the GUID in question is not known. Getting a valid entry does not mean that |
| * the node with this GUID is currently accessible (might be powered down). |
| */ |
| struct node_entry *hpsb_guid_get_entry(u64 guid); |
| |
| /* Same as above, but use the nodeid to get an node entry. This is not |
| * fool-proof by itself, since the nodeid can change. */ |
| struct node_entry *hpsb_nodeid_get_entry(struct hpsb_host *host, nodeid_t nodeid); |
| |
| /* |
| * If the entry refers to a local host, this function will return the pointer |
| * to the hpsb_host structure. It will return NULL otherwise. Once you have |
| * established it is a local host, you can use that knowledge from then on (the |
| * GUID won't wander to an external node). */ |
| struct hpsb_host *hpsb_get_host_by_ne(struct node_entry *ne); |
| |
| /* |
| * 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); |
| |
| |
| void init_ieee1394_nodemgr(void); |
| void cleanup_ieee1394_nodemgr(void); |
| |
| #endif /* _IEEE1394_NODEMGR_H */ |