ieee1394: remove the old IEEE 1394 driver stack

The drivers
  - ohci1394 (controller driver)
  - ieee1394 (core)
  - dv1394, raw1394, video1394 (userspace ABI)
  - eth1394, sbp2 (protocol drivers)
are replaced by
  - firewire-ohci (controller driver)
  - firewire-core (core and userspace ABI)
  - firewire-net, firewire-sbp2 (protocol drivers)
which are more featureful, better performing, and more secure than the older
drivers; all with a smaller and more modern code base.

The driver firedtv in drivers/media/dvb/firewire/ contains backends to both
ieee1394 and firewire-core.  Its ieee1394 backend code can be removed in an
independent commit; firedtv as-is builds and works fine without ieee1394.

The driver pcilynx (an incomplete controller driver) is deleted without
replacement since PCILynx cards are extremely rare.  Owners of these cards
use them with the stand-alone bus sniffer driver nosy instead.

The drivers nosy and init_ohci1394_dma which do not interact with either of
the two IEEE 1394 stacks are not affected by the ieee1394 subsystem removal.

There are still some issues with the newer firewire subsystem compared to
the older one:
  - The rare and quirky controllers ALi M52xx, Apple UniNorth v1, NVIDIA
    NForce2 are even less well supported by firewire-ohci than by ohci1394.
    I am looking into the M52xx issue.
  - The experimental firewire-net is reportedly less stable than its
    experimental cousin eth1394.
  - Audio playback of a certain group of audio devices (ones based on DICE
    chipset with EAP; supported by prerelease FFADO code) does not work yet.
    This issue is still under investigation.
  - There were some ieee1394 based out-of-the-mainline drivers.  Of them,
    only lisight, an audio driver for iSight webcams, seems still useful.
    Work is underway to reimplement it on top of firewire-core.

All these remainig issues are minor; they should not stand in the way of
overall better user experience of IEEE 1394 on Linux, together with a
reduction in support efforts and maintenance burden.  The coexistence of two
IEEE 1394 kernel driver stacks in the mainline since 2.6.22 shall end now,
as announced earlier this year.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

1 files changed, 0 insertions, 201 deletions

diff --git a/drivers/ieee1394/hosts.h b/drivers/ieee1394/hosts.h
deleted file mode 100644
index 49c359022c54..000000000000
--- a/drivers/ieee1394/hosts.h
+++ /dev/null
@@ -1,201 +0,0 @@
-#ifndef _IEEE1394_HOSTS_H
-#define _IEEE1394_HOSTS_H
-
-#include <linux/device.h>
-#include <linux/list.h>
-#include <linux/timer.h>
-#include <linux/types.h>
-#include <linux/workqueue.h>
-#include <asm/atomic.h>
-
-struct pci_dev;
-struct module;
-
-#include "ieee1394_types.h"
-#include "csr.h"
-#include "highlevel.h"
-
-struct hpsb_packet;
-struct hpsb_iso;
-
-struct hpsb_host {
-        struct list_head host_list;
-
-        void *hostdata;
-
-        atomic_t generation;
-
-        struct list_head pending_packets;
-        struct timer_list timeout;
-        unsigned long timeout_interval;
-
-        int node_count;      /* number of identified nodes on this bus */
-        int selfid_count;    /* total number of SelfIDs received */
-        int nodes_active;    /* number of nodes with active link layer */
-
-        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;
-        unsigned resume_packet_sent: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;
-
-        int id;
-        struct hpsb_host_driver *driver;
-        struct pci_dev *pdev;
-        struct device device;
-        struct device host_dev;
-
-        struct delayed_work delayed_reset;
-        unsigned config_roms:31;
-        unsigned update_config_rom:1;
-
-        struct list_head addr_space;
-        u64 low_addr_space;     /* upper bound of physical DMA area */
-        u64 middle_addr_space;  /* upper bound of posted write area */
-
-        u8 speed[ALL_NODES];    /* speed between each node and local node */
-
-        /* per node tlabel allocation */
-        u8 next_tl[ALL_NODES];
-        struct { DECLARE_BITMAP(map, 64); } tl_pool[ALL_NODES];
-
-        struct csr_control csr;
-
-        struct hpsb_address_serve dummy_zero_addr;
-        struct hpsb_address_serve dummy_max_addr;
-};
-
-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,
-};
-
-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 controllers */
-        LONG_RESET,
-
-        /* Short (arbitrated) reset -- only available on 1394a 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,
-                                  __be32 *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_resume_host(struct hpsb_host *host);
-void hpsb_remove_host(struct hpsb_host *host);
-int hpsb_update_config_rom_image(struct hpsb_host *host);
-
-#endif /* _IEEE1394_HOSTS_H */