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path: root/drivers/ieee1394/hosts.c
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Diffstat (limited to 'drivers/ieee1394/hosts.c')
-rw-r--r--drivers/ieee1394/hosts.c249
1 files changed, 0 insertions, 249 deletions
diff --git a/drivers/ieee1394/hosts.c b/drivers/ieee1394/hosts.c
deleted file mode 100644
index e947d8ffac85..000000000000
--- a/drivers/ieee1394/hosts.c
+++ /dev/null
@@ -1,249 +0,0 @@
-/*
- * IEEE 1394 for Linux
- *
- * Low level (host adapter) management.
- *
- * Copyright (C) 1999 Andreas E. Bombe
- * Copyright (C) 1999 Emanuel Pirker
- *
- * This code is licensed under the GPL. See the file COPYING in the root
- * directory of the kernel sources for details.
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/list.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/timer.h>
-#include <linux/jiffies.h>
-#include <linux/mutex.h>
-
-#include "csr1212.h"
-#include "ieee1394.h"
-#include "ieee1394_types.h"
-#include "hosts.h"
-#include "ieee1394_core.h"
-#include "highlevel.h"
-#include "nodemgr.h"
-#include "csr.h"
-#include "config_roms.h"
-
-
-static void delayed_reset_bus(struct work_struct *work)
-{
- struct hpsb_host *host =
- container_of(work, struct hpsb_host, delayed_reset.work);
- u8 generation = host->csr.generation + 1;
-
- /* The generation field rolls over to 2 rather than 0 per IEEE
- * 1394a-2000. */
- if (generation > 0xf || generation < 2)
- generation = 2;
-
- csr_set_bus_info_generation(host->csr.rom, generation);
- if (csr1212_generate_csr_image(host->csr.rom) != CSR1212_SUCCESS) {
- /* CSR image creation failed.
- * Reset generation field and do not issue a bus reset. */
- csr_set_bus_info_generation(host->csr.rom,
- host->csr.generation);
- return;
- }
-
- host->csr.generation = generation;
-
- host->update_config_rom = 0;
- if (host->driver->set_hw_config_rom)
- host->driver->set_hw_config_rom(host,
- host->csr.rom->bus_info_data);
-
- host->csr.gen_timestamp[host->csr.generation] = jiffies;
- hpsb_reset_bus(host, SHORT_RESET);
-}
-
-static int dummy_transmit_packet(struct hpsb_host *h, struct hpsb_packet *p)
-{
- return 0;
-}
-
-static int dummy_devctl(struct hpsb_host *h, enum devctl_cmd c, int arg)
-{
- return -1;
-}
-
-static int dummy_isoctl(struct hpsb_iso *iso, enum isoctl_cmd command,
- unsigned long arg)
-{
- return -1;
-}
-
-static struct hpsb_host_driver dummy_driver = {
- .transmit_packet = dummy_transmit_packet,
- .devctl = dummy_devctl,
- .isoctl = dummy_isoctl
-};
-
-static int alloc_hostnum_cb(struct hpsb_host *host, void *__data)
-{
- int *hostnum = __data;
-
- if (host->id == *hostnum)
- return 1;
-
- return 0;
-}
-
-static DEFINE_MUTEX(host_num_alloc);
-
-/**
- * hpsb_alloc_host - allocate a new host controller.
- * @drv: the driver that will manage the host controller
- * @extra: number of extra bytes to allocate for the driver
- *
- * Allocate a &hpsb_host and initialize the general subsystem specific
- * fields. If the driver needs to store per host data, as drivers
- * usually do, the amount of memory required can be specified by the
- * @extra parameter. Once allocated, the driver should initialize the
- * driver specific parts, enable the controller and make it available
- * to the general subsystem using hpsb_add_host().
- *
- * Return Value: a pointer to the &hpsb_host if successful, %NULL if
- * no memory was available.
- */
-struct hpsb_host *hpsb_alloc_host(struct hpsb_host_driver *drv, size_t extra,
- struct device *dev)
-{
- struct hpsb_host *h;
- int i;
- int hostnum = 0;
-
- h = kzalloc(sizeof(*h) + extra, GFP_KERNEL);
- if (!h)
- return NULL;
-
- h->csr.rom = csr1212_create_csr(&csr_bus_ops, CSR_BUS_INFO_SIZE, h);
- if (!h->csr.rom)
- goto fail;
-
- h->hostdata = h + 1;
- h->driver = drv;
-
- INIT_LIST_HEAD(&h->pending_packets);
- INIT_LIST_HEAD(&h->addr_space);
-
- for (i = 2; i < 16; i++)
- h->csr.gen_timestamp[i] = jiffies - 60 * HZ;
-
- atomic_set(&h->generation, 0);
-
- INIT_DELAYED_WORK(&h->delayed_reset, delayed_reset_bus);
-
- init_timer(&h->timeout);
- h->timeout.data = (unsigned long) h;
- h->timeout.function = abort_timedouts;
- h->timeout_interval = HZ / 20; /* 50ms, half of minimum SPLIT_TIMEOUT */
-
- h->topology_map = h->csr.topology_map + 3;
- h->speed_map = (u8 *)(h->csr.speed_map + 2);
-
- mutex_lock(&host_num_alloc);
- while (nodemgr_for_each_host(&hostnum, alloc_hostnum_cb))
- hostnum++;
- mutex_unlock(&host_num_alloc);
- h->id = hostnum;
-
- memcpy(&h->device, &nodemgr_dev_template_host, sizeof(h->device));
- h->device.parent = dev;
- set_dev_node(&h->device, dev_to_node(dev));
- dev_set_name(&h->device, "fw-host%d", h->id);
-
- h->host_dev.parent = &h->device;
- h->host_dev.class = &hpsb_host_class;
- dev_set_name(&h->host_dev, "fw-host%d", h->id);
-
- if (device_register(&h->device))
- goto fail;
- if (device_register(&h->host_dev)) {
- device_unregister(&h->device);
- goto fail;
- }
- get_device(&h->device);
-
- return h;
-
-fail:
- kfree(h);
- return NULL;
-}
-
-int hpsb_add_host(struct hpsb_host *host)
-{
- if (hpsb_default_host_entry(host))
- return -ENOMEM;
-
- highlevel_add_host(host);
- return 0;
-}
-
-void hpsb_resume_host(struct hpsb_host *host)
-{
- if (host->driver->set_hw_config_rom)
- host->driver->set_hw_config_rom(host,
- host->csr.rom->bus_info_data);
- host->driver->devctl(host, RESET_BUS, SHORT_RESET);
-}
-
-void hpsb_remove_host(struct hpsb_host *host)
-{
- host->is_shutdown = 1;
-
- cancel_delayed_work(&host->delayed_reset);
- flush_scheduled_work();
-
- host->driver = &dummy_driver;
- highlevel_remove_host(host);
-
- device_unregister(&host->host_dev);
- device_unregister(&host->device);
-}
-
-/**
- * hpsb_update_config_rom_image - updates configuration ROM image of a host
- *
- * 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)
-{
- unsigned long reset_delay;
- int next_gen = host->csr.generation + 1;
-
- if (!host->update_config_rom)
- return -EINVAL;
-
- if (next_gen > 0xf)
- next_gen = 2;
-
- /* Stop the delayed interrupt, we're about to change the config rom and
- * it would be a waste to do a bus reset twice. */
- cancel_delayed_work(&host->delayed_reset);
-
- /* IEEE 1394a-2000 prohibits using the same generation number
- * twice in a 60 second period. */
- if (time_before(jiffies, host->csr.gen_timestamp[next_gen] + 60 * HZ))
- /* Wait 60 seconds from the last time this generation number was
- * used. */
- reset_delay =
- (60 * HZ) + host->csr.gen_timestamp[next_gen] - jiffies;
- else
- /* Wait 1 second in case some other code wants to change the
- * Config ROM in the near future. */
- reset_delay = HZ;
-
- PREPARE_DELAYED_WORK(&host->delayed_reset, delayed_reset_bus);
- schedule_delayed_work(&host->delayed_reset, reset_delay);
-
- return 0;
-}
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