X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fieee1394%2Fhosts.c;h=e947d8ffac851b14d2fd07bc006ed723a30896a5;hb=f013574014816c7a557b3c52233f3620463f0b9b;hp=2d47b11777a598cb416b6466f68186cf31faedbf;hpb=fa7614de60d10460a607c3ca22ea080d021c3fef;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/ieee1394/hosts.c b/drivers/ieee1394/hosts.c index 2d47b11..e947d8f 100644 --- a/drivers/ieee1394/hosts.c +++ b/drivers/ieee1394/hosts.c @@ -10,13 +10,11 @@ * directory of the kernel sources for details. */ -#include #include #include #include #include #include -#include #include #include #include @@ -32,21 +30,23 @@ #include "config_roms.h" -static void delayed_reset_bus(void * __reset_info) +static void delayed_reset_bus(struct work_struct *work) { - struct hpsb_host *host = (struct hpsb_host*)__reset_info; - int generation = host->csr.generation + 1; + 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); + 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); + /* 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; } @@ -54,7 +54,8 @@ static void delayed_reset_bus(void * __reset_info) 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->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); @@ -70,7 +71,8 @@ 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) +static int dummy_isoctl(struct hpsb_iso *iso, enum isoctl_cmd command, + unsigned long arg) { return -1; } @@ -91,6 +93,8 @@ static int alloc_hostnum_cb(struct hpsb_host *host, void *__data) 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 @@ -103,11 +107,9 @@ static int alloc_hostnum_cb(struct hpsb_host *host, void *__data) * 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 + * Return Value: a pointer to the &hpsb_host if successful, %NULL if * no memory was available. */ -static DEFINE_MUTEX(host_num_alloc); - struct hpsb_host *hpsb_alloc_host(struct hpsb_host_driver *drv, size_t extra, struct device *dev) { @@ -115,62 +117,63 @@ struct hpsb_host *hpsb_alloc_host(struct hpsb_host_driver *drv, size_t extra, int i; int hostnum = 0; - h = kzalloc(sizeof(*h) + extra, SLAB_KERNEL); + 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) { - kfree(h); - return NULL; - } + if (!h->csr.rom) + goto fail; h->hostdata = h + 1; h->driver = drv; - skb_queue_head_init(&h->pending_packet_queue); + 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; - 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_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 by default + 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; - 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); + 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); - mutex_unlock(&host_num_alloc); - return h; + +fail: + kfree(h); + return NULL; } int hpsb_add_host(struct hpsb_host *host) @@ -178,13 +181,18 @@ 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_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; @@ -193,15 +201,20 @@ void hpsb_remove_host(struct hpsb_host *host) 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->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; @@ -222,13 +235,14 @@ int hpsb_update_config_rom_image(struct hpsb_host *host) 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; + 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); + PREPARE_DELAYED_WORK(&host->delayed_reset, delayed_reset_bus); schedule_delayed_work(&host->delayed_reset, reset_delay); return 0;