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, 141 deletions

diff --git a/drivers/ieee1394/highlevel.h b/drivers/ieee1394/highlevel.h
deleted file mode 100644
index 9dba89fc60ad..000000000000
--- a/drivers/ieee1394/highlevel.h
+++ /dev/null
@@ -1,141 +0,0 @@
-#ifndef IEEE1394_HIGHLEVEL_H
-#define IEEE1394_HIGHLEVEL_H
-
-#include <linux/list.h>
-#include <linux/spinlock.h>
-#include <linux/types.h>
-
-struct module;
-
-#include "ieee1394_types.h"
-
-struct hpsb_host;
-
-/* internal to ieee1394 core */
-struct hpsb_address_serve {
-	struct list_head host_list;	/* per host list */
-	struct list_head hl_list;	/* hpsb_highlevel list */
-	const struct hpsb_address_ops *op;
-	struct hpsb_host *host;
-	u64 start;	/* first address handled, quadlet aligned */
-	u64 end;	/* first address behind, quadlet aligned */
-};
-
-/* Only the following structures are of interest to actual highlevel drivers. */
-
-struct hpsb_highlevel {
-	const char *name;
-
-	/* Any of the following pointers can legally be NULL. */
-
-	/* New host initialized.  Will also be called during
-	 * hpsb_register_highlevel for all hosts already installed. */
-	void (*add_host)(struct hpsb_host *host);
-
-	/* Host about to be removed.  Will also be called during
-	 * hpsb_unregister_highlevel once for each host. */
-	void (*remove_host)(struct hpsb_host *host);
-
-	/* Host experienced bus reset with possible configuration changes.
-	 * Note that this one may occur during interrupt/bottom half handling.
-	 * You can not expect to be able to do stock hpsb_reads. */
-	void (*host_reset)(struct hpsb_host *host);
-
-	/* A write request was received on either the FCP_COMMAND (direction =
-	 * 0) or the FCP_RESPONSE (direction = 1) register.  The cts arg
-	 * contains the cts field (first byte of data). */
-	void (*fcp_request)(struct hpsb_host *host, int nodeid, int direction,
-			    int cts, u8 *data, size_t length);
-
-	/* These are initialized by the subsystem when the
-	 * hpsb_higlevel is registered. */
-	struct list_head hl_list;
-	struct list_head irq_list;
-	struct list_head addr_list;
-
-	struct list_head host_info_list;
-	rwlock_t host_info_lock;
-};
-
-struct hpsb_address_ops {
-	/*
-	 * Null function pointers will make the respective operation complete
-	 * with RCODE_TYPE_ERROR.  Makes for easy to implement read-only
-	 * registers (just leave everything but read NULL).
-	 *
-	 * All functions shall return appropriate IEEE 1394 rcodes.
-	 */
-
-	/* These functions have to implement block reads for themselves.
-	 *
-	 * These functions either return a response code or a negative number.
-	 * In the first case a response will be generated.  In the latter case,
-	 * no response will be sent and the driver which handled the request
-	 * will send the response itself. */
-	int (*read)(struct hpsb_host *host, int nodeid, quadlet_t *buffer,
-		    u64 addr, size_t length, u16 flags);
-	int (*write)(struct hpsb_host *host, int nodeid, int destid,
-		     quadlet_t *data, u64 addr, size_t length, u16 flags);
-
-	/* Lock transactions: write results of ext_tcode operation into
-	 * *store. */
-	int (*lock)(struct hpsb_host *host, int nodeid, quadlet_t *store,
-		    u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode,
-		    u16 flags);
-	int (*lock64)(struct hpsb_host *host, int nodeid, octlet_t *store,
-		      u64 addr, octlet_t data, octlet_t arg, int ext_tcode,
-		      u16 flags);
-};
-
-void highlevel_add_host(struct hpsb_host *host);
-void highlevel_remove_host(struct hpsb_host *host);
-void highlevel_host_reset(struct hpsb_host *host);
-int highlevel_read(struct hpsb_host *host, int nodeid, void *data, u64 addr,
-		   unsigned int length, u16 flags);
-int highlevel_write(struct hpsb_host *host, int nodeid, int destid, void *data,
-		    u64 addr, unsigned int length, u16 flags);
-int highlevel_lock(struct hpsb_host *host, int nodeid, quadlet_t *store,
-		   u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode,
-		   u16 flags);
-int highlevel_lock64(struct hpsb_host *host, int nodeid, octlet_t *store,
-		     u64 addr, octlet_t data, octlet_t arg, int ext_tcode,
-		     u16 flags);
-void highlevel_fcp_request(struct hpsb_host *host, int nodeid, int direction,
-			   void *data, size_t length);
-
-/**
- * hpsb_init_highlevel - initialize a struct hpsb_highlevel
- *
- * This is only necessary if hpsb_get_hostinfo_bykey can be called
- * before hpsb_register_highlevel.
- */
-static inline void hpsb_init_highlevel(struct hpsb_highlevel *hl)
-{
-	rwlock_init(&hl->host_info_lock);
-	INIT_LIST_HEAD(&hl->host_info_list);
-}
-void hpsb_register_highlevel(struct hpsb_highlevel *hl);
-void hpsb_unregister_highlevel(struct hpsb_highlevel *hl);
-
-u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl,
-					 struct hpsb_host *host,
-					 const struct hpsb_address_ops *ops,
-					 u64 size, u64 alignment,
-					 u64 start, u64 end);
-int hpsb_register_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
-			    const struct hpsb_address_ops *ops,
-			    u64 start, u64 end);
-int hpsb_unregister_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
-			      u64 start);
-
-void *hpsb_get_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host);
-void *hpsb_create_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
-			   size_t data_size);
-void hpsb_destroy_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host);
-void hpsb_set_hostinfo_key(struct hpsb_highlevel *hl, struct hpsb_host *host,
-			   unsigned long key);
-void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel *hl, unsigned long key);
-int hpsb_set_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
-		      void *data);
-
-#endif /* IEEE1394_HIGHLEVEL_H */