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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-17 02:20:36 +0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/ieee1394/hosts.h
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/ieee1394/hosts.h')
-rw-r--r--drivers/ieee1394/hosts.h215
1 files changed, 215 insertions, 0 deletions
diff --git a/drivers/ieee1394/hosts.h b/drivers/ieee1394/hosts.h
new file mode 100644
index 000000000000..739e76840d51
--- /dev/null
+++ b/drivers/ieee1394/hosts.h
@@ -0,0 +1,215 @@
+#ifndef _IEEE1394_HOSTS_H
+#define _IEEE1394_HOSTS_H
+
+#include <linux/device.h>
+#include <linux/wait.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/skbuff.h>
+
+#include <asm/semaphore.h>
+
+#include "ieee1394_types.h"
+#include "csr.h"
+
+
+struct hpsb_packet;
+struct hpsb_iso;
+
+struct hpsb_host {
+ struct list_head host_list;
+
+ void *hostdata;
+
+ atomic_t generation;
+
+ struct sk_buff_head pending_packet_queue;
+
+ struct timer_list timeout;
+ unsigned long timeout_interval;
+
+ unsigned char iso_listen_count[64];
+
+ int node_count; /* number of identified nodes on this bus */
+ int selfid_count; /* total number of SelfIDs received */
+ int nodes_active; /* number of nodes that are actually active */
+
+ nodeid_t node_id; /* node ID of this host */
+ nodeid_t irm_id; /* ID of this bus' isochronous resource manager */
+ nodeid_t busmgr_id; /* ID of this bus' bus manager */
+
+ /* this nodes state */
+ unsigned in_bus_reset:1;
+ unsigned is_shutdown:1;
+
+ /* this nodes' duties on the bus */
+ unsigned is_root:1;
+ unsigned is_cycmst:1;
+ unsigned is_irm:1;
+ unsigned is_busmgr:1;
+
+ int reset_retries;
+ quadlet_t *topology_map;
+ u8 *speed_map;
+ struct csr_control csr;
+
+ /* Per node tlabel pool allocation */
+ struct hpsb_tlabel_pool tpool[64];
+
+ struct hpsb_host_driver *driver;
+
+ struct pci_dev *pdev;
+
+ int id;
+
+ struct device device;
+ struct class_device class_dev;
+
+ int update_config_rom;
+ struct work_struct delayed_reset;
+
+ unsigned int config_roms;
+
+ struct list_head addr_space;
+};
+
+
+
+enum devctl_cmd {
+ /* Host is requested to reset its bus and cancel all outstanding async
+ * requests. If arg == 1, it shall also attempt to become root on the
+ * bus. Return void. */
+ RESET_BUS,
+
+ /* Arg is void, return value is the hardware cycle counter value. */
+ GET_CYCLE_COUNTER,
+
+ /* Set the hardware cycle counter to the value in arg, return void.
+ * FIXME - setting is probably not required. */
+ SET_CYCLE_COUNTER,
+
+ /* Configure hardware for new bus ID in arg, return void. */
+ SET_BUS_ID,
+
+ /* If arg true, start sending cycle start packets, stop if arg == 0.
+ * Return void. */
+ ACT_CYCLE_MASTER,
+
+ /* Cancel all outstanding async requests without resetting the bus.
+ * Return void. */
+ CANCEL_REQUESTS,
+
+ /* Start or stop receiving isochronous channel in arg. Return void.
+ * This acts as an optimization hint, hosts are not required not to
+ * listen on unrequested channels. */
+ ISO_LISTEN_CHANNEL,
+ ISO_UNLISTEN_CHANNEL
+};
+
+enum isoctl_cmd {
+ /* rawiso API - see iso.h for the meanings of these commands
+ (they correspond exactly to the hpsb_iso_* API functions)
+ * INIT = allocate resources
+ * START = begin transmission/reception
+ * STOP = halt transmission/reception
+ * QUEUE/RELEASE = produce/consume packets
+ * SHUTDOWN = deallocate resources
+ */
+
+ XMIT_INIT,
+ XMIT_START,
+ XMIT_STOP,
+ XMIT_QUEUE,
+ XMIT_SHUTDOWN,
+
+ RECV_INIT,
+ RECV_LISTEN_CHANNEL, /* multi-channel only */
+ RECV_UNLISTEN_CHANNEL, /* multi-channel only */
+ RECV_SET_CHANNEL_MASK, /* multi-channel only; arg is a *u64 */
+ RECV_START,
+ RECV_STOP,
+ RECV_RELEASE,
+ RECV_SHUTDOWN,
+ RECV_FLUSH
+};
+
+enum reset_types {
+ /* 166 microsecond reset -- only type of reset available on
+ non-1394a capable IEEE 1394 controllers */
+ LONG_RESET,
+
+ /* Short (arbitrated) reset -- only available on 1394a capable
+ IEEE 1394 capable controllers */
+ SHORT_RESET,
+
+ /* Variants, that set force_root before issueing the bus reset */
+ LONG_RESET_FORCE_ROOT, SHORT_RESET_FORCE_ROOT,
+
+ /* Variants, that clear force_root before issueing the bus reset */
+ LONG_RESET_NO_FORCE_ROOT, SHORT_RESET_NO_FORCE_ROOT
+};
+
+struct hpsb_host_driver {
+ struct module *owner;
+ const char *name;
+
+ /* The hardware driver may optionally support a function that is used
+ * to set the hardware ConfigROM if the hardware supports handling
+ * reads to the ConfigROM on its own. */
+ void (*set_hw_config_rom) (struct hpsb_host *host, quadlet_t *config_rom);
+
+ /* This function shall implement packet transmission based on
+ * packet->type. It shall CRC both parts of the packet (unless
+ * packet->type == raw) and do byte-swapping as necessary or instruct
+ * the hardware to do so. It can return immediately after the packet
+ * was queued for sending. After sending, hpsb_sent_packet() has to be
+ * called. Return 0 on success, negative errno on failure.
+ * NOTE: The function must be callable in interrupt context.
+ */
+ int (*transmit_packet) (struct hpsb_host *host,
+ struct hpsb_packet *packet);
+
+ /* This function requests miscellanous services from the driver, see
+ * above for command codes and expected actions. Return -1 for unknown
+ * command, though that should never happen.
+ */
+ int (*devctl) (struct hpsb_host *host, enum devctl_cmd command, int arg);
+
+ /* ISO transmission/reception functions. Return 0 on success, -1
+ * (or -EXXX errno code) on failure. If the low-level driver does not
+ * support the new ISO API, set isoctl to NULL.
+ */
+ int (*isoctl) (struct hpsb_iso *iso, enum isoctl_cmd command, unsigned long arg);
+
+ /* This function is mainly to redirect local CSR reads/locks to the iso
+ * management registers (bus manager id, bandwidth available, channels
+ * available) to the hardware registers in OHCI. reg is 0,1,2,3 for bus
+ * mgr, bwdth avail, ch avail hi, ch avail lo respectively (the same ids
+ * as OHCI uses). data and compare are the new data and expected data
+ * respectively, return value is the old value.
+ */
+ quadlet_t (*hw_csr_reg) (struct hpsb_host *host, int reg,
+ quadlet_t data, quadlet_t compare);
+};
+
+
+struct hpsb_host *hpsb_alloc_host(struct hpsb_host_driver *drv, size_t extra,
+ struct device *dev);
+int hpsb_add_host(struct hpsb_host *host);
+void hpsb_remove_host(struct hpsb_host *h);
+
+/* The following 2 functions are deprecated and will be removed when the
+ * raw1394/libraw1394 update is complete. */
+int hpsb_update_config_rom(struct hpsb_host *host,
+ const quadlet_t *new_rom, size_t size, unsigned char rom_version);
+int hpsb_get_config_rom(struct hpsb_host *host, quadlet_t *buffer,
+ size_t buffersize, size_t *rom_size, unsigned char *rom_version);
+
+/* Updates the configuration rom image of a host. rom_version must be the
+ * current version, otherwise it will fail with return value -1. If this
+ * host does not support config-rom-update, it will return -EINVAL.
+ * Return value 0 indicates success.
+ */
+int hpsb_update_config_rom_image(struct hpsb_host *host);
+
+#endif /* _IEEE1394_HOSTS_H */