aboutsummaryrefslogtreecommitdiff
path: root/drivers/ieee1394/hosts.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/ieee1394/hosts.c')
-rw-r--r--drivers/ieee1394/hosts.c234
1 files changed, 0 insertions, 234 deletions
diff --git a/drivers/ieee1394/hosts.c b/drivers/ieee1394/hosts.c
deleted file mode 100644
index aeeaeb670d0..00000000000
--- a/drivers/ieee1394/hosts.c
+++ /dev/null
@@ -1,234 +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/config.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/list.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/pci.h>
-#include <linux/timer.h>
-#include <linux/jiffies.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(void * __reset_info)
-{
- struct hpsb_host *host = (struct hpsb_host*)__reset_info;
- int 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;
-}
-
-/**
- * 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 succesful, %NULL if
- * no memory was available.
- */
-static DECLARE_MUTEX(host_num_alloc);
-
-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 = kmalloc(sizeof(struct hpsb_host) + extra, SLAB_KERNEL);
- if (!h) return NULL;
- memset(h, 0, sizeof(struct hpsb_host) + extra);
-
- h->csr.rom = csr1212_create_csr(&csr_bus_ops, CSR_BUS_INFO_SIZE, h);
- if (!h->csr.rom) {
- kfree(h);
- return NULL;
- }
-
- h->hostdata = h + 1;
- h->driver = drv;
-
- skb_queue_head_init(&h->pending_packet_queue);
- INIT_LIST_HEAD(&h->addr_space);
-
- for (i = 2; i < 16; i++)
- h->csr.gen_timestamp[i] = jiffies - 60 * HZ;
-
- for (i = 0; i < ARRAY_SIZE(h->tpool); i++)
- HPSB_TPOOL_INIT(&h->tpool[i]);
-
- atomic_set(&h->generation, 0);
-
- INIT_WORK(&h->delayed_reset, delayed_reset_bus, h);
-
- init_timer(&h->timeout);
- h->timeout.data = (unsigned long) h;
- h->timeout.function = abort_timedouts;
- h->timeout_interval = HZ / 20; // 50ms by default
-
- h->topology_map = h->csr.topology_map + 3;
- h->speed_map = (u8 *)(h->csr.speed_map + 2);
-
- down(&host_num_alloc);
-
- while (nodemgr_for_each_host(&hostnum, alloc_hostnum_cb))
- hostnum++;
-
- h->id = hostnum;
-
- memcpy(&h->device, &nodemgr_dev_template_host, sizeof(h->device));
- h->device.parent = dev;
- snprintf(h->device.bus_id, BUS_ID_SIZE, "fw-host%d", h->id);
-
- h->class_dev.dev = &h->device;
- h->class_dev.class = &hpsb_host_class;
- snprintf(h->class_dev.class_id, BUS_ID_SIZE, "fw-host%d", h->id);
-
- device_register(&h->device);
- class_device_register(&h->class_dev);
- get_device(&h->device);
-
- up(&host_num_alloc);
-
- return h;
-}
-
-int hpsb_add_host(struct hpsb_host *host)
-{
- if (hpsb_default_host_entry(host))
- return -ENOMEM;
-
- hpsb_add_extra_config_roms(host);
-
- highlevel_add_host(host);
-
- return 0;
-}
-
-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);
-
- hpsb_remove_extra_config_roms(host);
-
- class_device_unregister(&host->class_dev);
- device_unregister(&host->device);
-}
-
-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_WORK(&host->delayed_reset, delayed_reset_bus, host);
- schedule_delayed_work(&host->delayed_reset, reset_delay);
-
- return 0;
-}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 19:34:46 +0000