diff options
| -rw-r--r-- | drivers/firewire/fw-card.c | 105 | ||||
| -rw-r--r-- | drivers/firewire/fw-cdev.c | 33 | ||||
| -rw-r--r-- | drivers/firewire/fw-device.c | 101 | ||||
| -rw-r--r-- | drivers/firewire/fw-device.h | 5 | ||||
| -rw-r--r-- | drivers/firewire/fw-iso.c | 4 | ||||
| -rw-r--r-- | drivers/firewire/fw-ohci.c | 144 | ||||
| -rw-r--r-- | drivers/firewire/fw-sbp2.c | 101 | ||||
| -rw-r--r-- | drivers/firewire/fw-topology.c | 65 | ||||
| -rw-r--r-- | drivers/firewire/fw-topology.h | 5 | ||||
| -rw-r--r-- | drivers/firewire/fw-transaction.c | 71 | ||||
| -rw-r--r-- | drivers/firewire/fw-transaction.h | 58 |
11 files changed, 439 insertions, 253 deletions
diff --git a/drivers/firewire/fw-card.c b/drivers/firewire/fw-card.c index 2169656..b2aa855 100644 --- a/drivers/firewire/fw-card.c +++ b/drivers/firewire/fw-card.c @@ -1,8 +1,5 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-card.c - card level functions - * - * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net> +/* + * Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -69,12 +66,14 @@ generate_config_rom (struct fw_card *card, size_t *config_rom_length) static u32 config_rom[256]; int i, j, length; - /* Initialize contents of config rom buffer. On the OHCI + /* + * Initialize contents of config rom buffer. On the OHCI * controller, block reads to the config rom accesses the host * memory, but quadlet read access the hardware bus info block * registers. That's just crack, but it means we should make * sure the contents of bus info block in host memory mathces - * the version stored in the OHCI registers. */ + * the version stored in the OHCI registers. + */ memset(config_rom, 0, sizeof config_rom); config_rom[0] = bib_crc_length(4) | bib_info_length(4) | bib_crc(0); @@ -143,9 +142,11 @@ fw_core_add_descriptor (struct fw_descriptor *desc) { size_t i; - /* Check descriptor is valid; the length of all blocks in the + /* + * Check descriptor is valid; the length of all blocks in the * descriptor has to add up to exactly the length of the - * block. */ + * block. + */ i = 0; while (i < desc->length) i += (desc->data[i] >> 16) + 1; @@ -228,7 +229,8 @@ fw_card_bm_work(struct work_struct *work) if (card->bm_generation + 1 == generation || (card->bm_generation != generation && grace)) { - /* This first step is to figure out who is IRM and + /* + * This first step is to figure out who is IRM and * then try to become bus manager. If the IRM is not * well defined (e.g. does not have an active link * layer or does not responds to our lock request, we @@ -236,7 +238,8 @@ fw_card_bm_work(struct work_struct *work) * In that case, we do a goto into the gap count logic * so that when we do the reset, we still optimize the * gap count. That could well save a reset in the - * next generation. */ + * next generation. + */ irm_id = card->irm_node->node_id; if (!card->irm_node->link_on) { @@ -260,8 +263,10 @@ fw_card_bm_work(struct work_struct *work) wait_for_completion(&bmd.done); if (bmd.rcode == RCODE_GENERATION) { - /* Another bus reset happened. Just return, - * the BM work has been rescheduled. */ + /* + * Another bus reset happened. Just return, + * the BM work has been rescheduled. + */ return; } @@ -271,48 +276,62 @@ fw_card_bm_work(struct work_struct *work) spin_lock_irqsave(&card->lock, flags); if (bmd.rcode != RCODE_COMPLETE) { - /* The lock request failed, maybe the IRM + /* + * The lock request failed, maybe the IRM * isn't really IRM capable after all. Let's * do a bus reset and pick the local node as - * root, and thus, IRM. */ + * root, and thus, IRM. + */ new_root_id = card->local_node->node_id; fw_notify("BM lock failed, making local node (%02x) root.\n", new_root_id); goto pick_me; } } else if (card->bm_generation != generation) { - /* OK, we weren't BM in the last generation, and it's + /* + * OK, we weren't BM in the last generation, and it's * less than 100ms since last bus reset. Reschedule - * this task 100ms from now. */ + * this task 100ms from now. + */ spin_unlock_irqrestore(&card->lock, flags); schedule_delayed_work(&card->work, DIV_ROUND_UP(HZ, 10)); return; } - /* We're bus manager for this generation, so next step is to + /* + * We're bus manager for this generation, so next step is to * make sure we have an active cycle master and do gap count - * optimization. */ + * optimization. + */ card->bm_generation = generation; if (root == NULL) { - /* Either link_on is false, or we failed to read the - * config rom. In either case, pick another root. */ + /* + * Either link_on is false, or we failed to read the + * config rom. In either case, pick another root. + */ new_root_id = card->local_node->node_id; } else if (atomic_read(&root->state) != FW_DEVICE_RUNNING) { - /* If we haven't probed this device yet, bail out now - * and let's try again once that's done. */ + /* + * If we haven't probed this device yet, bail out now + * and let's try again once that's done. + */ spin_unlock_irqrestore(&card->lock, flags); return; } else if (root->config_rom[2] & bib_cmc) { - /* FIXME: I suppose we should set the cmstr bit in the + /* + * FIXME: I suppose we should set the cmstr bit in the * STATE_CLEAR register of this node, as described in * 1394-1995, 8.4.2.6. Also, send out a force root - * packet for this node. */ + * packet for this node. + */ new_root_id = root_id; } else { - /* Current root has an active link layer and we + /* + * Current root has an active link layer and we * successfully read the config rom, but it's not - * cycle master capable. */ + * cycle master capable. + */ new_root_id = card->local_node->node_id; } @@ -324,9 +343,11 @@ fw_card_bm_work(struct work_struct *work) else gap_count = 63; - /* Finally, figure out if we should do a reset or not. If we've + /* + * Finally, figure out if we should do a reset or not. If we've * done less that 5 resets with the same physical topology and we - * have either a new root or a new gap count setting, let's do it. */ + * have either a new root or a new gap count setting, let's do it. + */ if (card->bm_retries++ < 5 && (card->gap_count != gap_count || new_root_id != root_id)) @@ -391,8 +412,10 @@ fw_card_add(struct fw_card *card, PHY_LINK_ACTIVE | PHY_CONTENDER) < 0) return -EIO; - /* The subsystem grabs a reference when the card is added and - * drops it when the driver calls fw_core_remove_card. */ + /* + * The subsystem grabs a reference when the card is added and + * drops it when the driver calls fw_core_remove_card. + */ fw_card_get(card); down_write(&card_rwsem); @@ -405,11 +428,13 @@ fw_card_add(struct fw_card *card, EXPORT_SYMBOL(fw_card_add); -/* The next few functions implements a dummy driver that use once a +/* + * The next few functions implements a dummy driver that use once a * card driver shuts down an fw_card. This allows the driver to * cleanly unload, as all IO to the card will be handled by the dummy * driver instead of calling into the (possibly) unloaded module. The - * dummy driver just fails all IO. */ + * dummy driver just fails all IO. + */ static int dummy_enable(struct fw_card *card, u32 *config_rom, size_t length) @@ -429,8 +454,10 @@ static int dummy_set_config_rom(struct fw_card *card, u32 *config_rom, size_t length) { - /* We take the card out of card_list before setting the dummy - * driver, so this should never get called. */ + /* + * We take the card out of card_list before setting the dummy + * driver, so this should never get called. + */ BUG(); return -1; } @@ -510,9 +537,11 @@ release_card(struct kref *kref) kfree(card); } -/* An assumption for fw_card_put() is that the card driver allocates +/* + * An assumption for fw_card_put() is that the card driver allocates * the fw_card struct with kalloc and that it has been shut down - * before the last ref is dropped. */ + * before the last ref is dropped. + */ void fw_card_put(struct fw_card *card) { @@ -524,8 +553,6 @@ int fw_core_initiate_bus_reset(struct fw_card *card, int short_reset) { int reg = short_reset ? 5 : 1; - /* The following values happen to be the same bit. However be - * explicit for clarity. */ int bit = short_reset ? PHY_BUS_SHORT_RESET : PHY_BUS_RESET; return card->driver->update_phy_reg(card, reg, 0, bit); diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/fw-cdev.c index 88b8fd9..c876ac3 100644 --- a/drivers/firewire/fw-cdev.c +++ b/drivers/firewire/fw-cdev.c @@ -1,8 +1,7 @@ -/* -*- c-basic-offset: 8 -*- +/* + * Char device for device raw access * - * fw-device-cdev.c - Char device for device raw access - * - * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net> + * Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -36,9 +35,6 @@ #include "fw-topology.h" #include "fw-device.h" -/* dequeue_event() just kfree()'s the event, so the event has to be - * the first field in the struct. */ - struct client; struct client_resource { struct list_head link; @@ -46,6 +42,11 @@ struct client_resource { u32 handle; }; +/* + * dequeue_event() just kfree()'s the event, so the event has to be + * the first field in the struct. + */ + struct event { struct { void *data; size_t size; } v[2]; struct list_head link; @@ -691,13 +692,15 @@ static int ioctl_queue_iso(struct client *client, void *buffer) if (ctx == NULL || request->handle != 0) return -EINVAL; - /* If the user passes a non-NULL data pointer, has mmap()'ed + /* + * If the user passes a non-NULL data pointer, has mmap()'ed * the iso buffer, and the pointer points inside the buffer, * we setup the payload pointers accordingly. Otherwise we * set them both to 0, which will still let packets with * payload_length == 0 through. In other words, if no packets * use the indirect payload, the iso buffer need not be mapped - * and the request->data pointer is ignored.*/ + * and the request->data pointer is ignored. + */ payload = (unsigned long)request->data - client->vm_start; buffer_end = client->buffer.page_count << PAGE_SHIFT; @@ -720,8 +723,10 @@ static int ioctl_queue_iso(struct client *client, void *buffer) if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) { header_length = u.packet.header_length; } else { - /* We require that header_length is a multiple of - * the fixed header size, ctx->header_size */ + /* + * We require that header_length is a multiple of + * the fixed header size, ctx->header_size. + */ if (ctx->header_size == 0) { if (u.packet.header_length > 0) return -EINVAL; @@ -908,8 +913,10 @@ static int fw_device_op_release(struct inode *inode, struct file *file) list_for_each_entry_safe(r, next_r, &client->resource_list, link) r->release(client, r); - /* FIXME: We should wait for the async tasklets to stop - * running before freeing the memory. */ + /* + * FIXME: We should wait for the async tasklets to stop + * running before freeing the memory. + */ list_for_each_entry_safe(e, next_e, &client->event_list, link) kfree(e); diff --git a/drivers/firewire/fw-device.c b/drivers/firewire/fw-device.c index 99d1c41..8e5f17f 100644 --- a/drivers/firewire/fw-device.c +++ b/drivers/firewire/fw-device.c @@ -1,6 +1,5 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-device.c - Device probing and sysfs code. +/* + * Device probing and sysfs code. * * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net> * @@ -174,8 +173,10 @@ static void fw_device_release(struct device *dev) struct fw_device *device = fw_device(dev); unsigned long flags; - /* Take the card lock so we don't set this to NULL while a - * FW_NODE_UPDATED callback is being handled. */ + /* + * Take the card lock so we don't set this to NULL while a + * FW_NODE_UPDATED callback is being handled. + */ spin_lock_irqsave(&device->card->lock, flags); device->node->data = NULL; spin_unlock_irqrestore(&device->card->lock, flags); @@ -421,34 +422,42 @@ static int read_bus_info_block(struct fw_device *device) for (i = 0; i < 5; i++) { if (read_rom(device, i, &rom[i]) != RCODE_COMPLETE) return -1; - /* As per IEEE1212 7.2, during power-up, devices can + /* + * As per IEEE1212 7.2, during power-up, devices can * reply with a 0 for the first quadlet of the config * rom to indicate that they are booting (for example, * if the firmware is on the disk of a external * harddisk). In that case we just fail, and the - * retry mechanism will try again later. */ + * retry mechanism will try again later. + */ if (i == 0 && rom[i] == 0) return -1; } - /* Now parse the config rom. The config rom is a recursive + /* + * Now parse the config rom. The config rom is a recursive * directory structure so we parse it using a stack of * references to the blocks that make up the structure. We * push a reference to the root directory on the stack to - * start things off. */ + * start things off. + */ length = i; sp = 0; stack[sp++] = 0xc0000005; while (sp > 0) { - /* Pop the next block reference of the stack. The + /* + * Pop the next block reference of the stack. The * lower 24 bits is the offset into the config rom, * the upper 8 bits are the type of the reference the - * block. */ + * block. + */ key = stack[--sp]; i = key & 0xffffff; if (i >= ARRAY_SIZE(rom)) - /* The reference points outside the standard - * config rom area, something's fishy. */ + /* + * The reference points outside the standard + * config rom area, something's fishy. + */ return -1; /* Read header quadlet for the block to get the length. */ @@ -457,15 +466,19 @@ static int read_bus_info_block(struct fw_device *device) end = i + (rom[i] >> 16) + 1; i++; if (end > ARRAY_SIZE(rom)) - /* This block extends outside standard config + /* + * This block extends outside standard config * area (and the array we're reading it * into). That's broken, so ignore this - * device. */ + * device. + */ return -1; - /* Now read in the block. If this is a directory + /* + * Now read in the block. If this is a directory * block, check the entries as we read them to see if - * it references another block, and push it in that case. */ + * it references another block, and push it in that case. + */ while (i < end) { if (read_rom(device, i, &rom[i]) != RCODE_COMPLETE) return -1; @@ -516,8 +529,10 @@ static void create_units(struct fw_device *device) if (key != (CSR_UNIT | CSR_DIRECTORY)) continue; - /* Get the address of the unit directory and try to - * match the drivers id_tables against it. */ + /* + * Get the address of the unit directory and try to + * match the drivers id_tables against it. + */ unit = kzalloc(sizeof *unit, GFP_KERNEL); if (unit == NULL) { fw_error("failed to allocate memory for unit\n"); @@ -585,14 +600,16 @@ static struct device_type fw_device_type = { .release = fw_device_release, }; -/* These defines control the retry behavior for reading the config +/* + * These defines control the retry behavior for reading the config * rom. It shouldn't be necessary to tweak these; if the device * doesn't respond to a config rom read within 10 seconds, it's not * going to respond at all. As for the initial delay, a lot of * devices will be able to respond within half a second after bus * reset. On the other hand, it's not really worth being more * aggressive than that, since it scales pretty well; if 10 devices - * are plugged in, they're all getting read within one second. */ + * are plugged in, they're all getting read within one second. + */ #define MAX_RETRIES 10 #define RETRY_DELAY (3 * HZ) @@ -604,9 +621,11 @@ static void fw_device_init(struct work_struct *work) container_of(work, struct fw_device, work.work); int minor, err; - /* All failure paths here set node->data to NULL, so that we + /* + * All failure paths here set node->data to NULL, so that we * don't try to do device_for_each_child() on a kfree()'d - * device. */ + * device. + */ if (read_bus_info_block(device) < 0) { if (device->config_rom_retries < MAX_RETRIES) { @@ -647,13 +666,15 @@ static void fw_device_init(struct work_struct *work) create_units(device); - /* Transition the device to running state. If it got pulled + /* + * Transition the device to running state. If it got pulled * out from under us while we did the intialization work, we * have to shut down the device again here. Normally, though, * fw_node_event will be responsible for shutting it down when * necessary. We have to use the atomic cmpxchg here to avoid * racing with the FW_NODE_DESTROYED case in - * fw_node_event(). */ + * fw_node_event(). + */ if (atomic_cmpxchg(&device->state, FW_DEVICE_INITIALIZING, FW_DEVICE_RUNNING) == FW_DEVICE_SHUTDOWN) @@ -662,10 +683,12 @@ static void fw_device_init(struct work_struct *work) fw_notify("created new fw device %s (%d config rom retries)\n", device->device.bus_id, device->config_rom_retries); - /* Reschedule the IRM work if we just finished reading the + /* + * Reschedule the IRM work if we just finished reading the * root node config rom. If this races with a bus reset we * just end up running the IRM work a couple of extra times - - * pretty harmless. */ + * pretty harmless. + */ if (device->node == device->card->root_node) schedule_delayed_work(&device->card->work, 0); @@ -716,12 +739,14 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event) if (device == NULL) break; - /* Do minimal intialization of the device here, the + /* + * Do minimal intialization of the device here, the * rest will happen in fw_device_init(). We need the * card and node so we can read the config rom and we * need to do device_initialize() now so * device_for_each_child() in FW_NODE_UPDATED is - * doesn't freak out. */ + * doesn't freak out. + */ device_initialize(&device->device); atomic_set(&device->state, FW_DEVICE_INITIALIZING); device->card = fw_card_get(card); @@ -730,15 +755,19 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event) device->generation = card->generation; INIT_LIST_HEAD(&device->client_list); - /* Set the node data to point back to this device so + /* + * Set the node data to point back to this device so * FW_NODE_UPDATED callbacks can update the node_id - * and generation for the device. */ + * and generation for the device. + */ node->data = device; - /* Many devices are slow to respond after bus resets, + /* + * Many devices are slow to respond after bus resets, * especially if they are bus powered and go through * power-up after getting plugged in. We schedule the - * first config rom scan half a second after bus reset. */ + * first config rom scan half a second after bus reset. + */ INIT_DELAYED_WORK(&device->work, fw_device_init); schedule_delayed_work(&device->work, INITIAL_DELAY); break; @@ -761,7 +790,8 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event) if (!node->data) break; - /* Destroy the device associated with the node. There + /* + * Destroy the device associated with the node. There * are two cases here: either the device is fully * initialized (FW_DEVICE_RUNNING) or we're in the * process of reading its config rom @@ -770,7 +800,8 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event) * full fw_device_shutdown(). If not, there's work * scheduled to read it's config rom, and we just put * the device in shutdown state to have that code fail - * to create the device. */ + * to create the device. + */ device = node->data; if (atomic_xchg(&device->state, FW_DEVICE_SHUTDOWN) == FW_DEVICE_RUNNING) { diff --git a/drivers/firewire/fw-device.h b/drivers/firewire/fw-device.h index c167d59..0ba9d64 100644 --- a/drivers/firewire/fw-device.h +++ b/drivers/firewire/fw-device.h @@ -1,7 +1,4 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-device.h - Device probing and sysfs code. - * +/* * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify diff --git a/drivers/firewire/fw-iso.c b/drivers/firewire/fw-iso.c index 2ce26db..2b640e9 100644 --- a/drivers/firewire/fw-iso.c +++ b/drivers/firewire/fw-iso.c @@ -1,6 +1,6 @@ -/* -*- c-basic-offset: 8 -*- +/* + * Isochronous IO functionality * - * fw-iso.c - Isochronous IO * Copyright (C) 2006 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c index 34eb468..beb9244 100644 --- a/drivers/firewire/fw-ohci.c +++ b/drivers/firewire/fw-ohci.c @@ -1,6 +1,6 @@ -/* -*- c-basic-offset: 8 -*- +/* + * Driver for OHCI 1394 controllers * - * fw-ohci.c - Driver for OHCI 1394 boards * Copyright (C) 2003-2006 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify @@ -141,8 +141,10 @@ struct fw_ohci { int request_generation; u32 bus_seconds; - /* Spinlock for accessing fw_ohci data. Never call out of - * this driver with this lock held. */ + /* + * Spinlock for accessing fw_ohci data. Never call out of + * this driver with this lock held. + */ spinlock_t lock; u32 self_id_buffer[512]; @@ -328,13 +330,15 @@ static __le32 *handle_ar_packet(struct ar_context *ctx, __le32 *buffer) p.timestamp = status & 0xffff; p.generation = ohci->request_generation; - /* The OHCI bus reset handler synthesizes a phy packet with + /* + * The OHCI bus reset handler synthesizes a phy packet with * the new generation number when a bus reset happens (see * section 8.4.2.3). This helps us determine when a request * was received and make sure we send the response in the same * generation. We only need this for requests; for responses * we use the unique tlabel for finding the matching - * request. */ + * request. + */ if (p.ack + 16 == 0x09) ohci->request_generation = (buffer[2] >> 16) & 0xff; @@ -360,9 +364,11 @@ static void ar_context_tasklet(unsigned long data) if (d->res_count == 0) { size_t size, rest, offset; - /* This descriptor is finished and we may have a + /* + * This descriptor is finished and we may have a * packet split across this and the next buffer. We - * reuse the page for reassembling the split packet. */ + * reuse the page for reassembling the split packet. + */ offset = offsetof(struct ar_buffer, data); dma_unmap_single(ohci->card.device, @@ -473,11 +479,13 @@ context_init(struct context *ctx, struct fw_ohci *ohci, ctx->tail_descriptor = ctx->buffer; ctx->tail_descriptor_last = ctx->buffer; - /* We put a dummy descriptor in the buffer that has a NULL + /* + * We put a dummy descriptor in the buffer that has a NULL * branch address and looks like it's been sent. That way we * have a descriptor to append DMA programs to. Also, the * ring buffer invariant is that it always has at least one - * element so that head == tail means buffer full. */ + * element so that head == tail means buffer full. + */ memset(ctx->head_descriptor, 0, sizeof *ctx->head_descriptor); ctx->head_descriptor->control = cpu_to_le16(descriptor_output_last); @@ -575,9 +583,11 @@ struct driver_data { struct fw_packet *packet; }; -/* This function apppends a packet to the DMA queue for transmission. +/* + * This function apppends a packet to the DMA queue for transmission. * Must always be called with the ochi->lock held to ensure proper - * generation handling and locking around packet queue manipulation. */ + * generation handling and locking around packet queue manipulation. + */ static int at_context_queue_packet(struct context *ctx, struct fw_packet *packet) { @@ -598,10 +608,12 @@ at_context_queue_packet(struct context *ctx, struct fw_packet *packet) d[0].control = cpu_to_le16(descriptor_key_immediate); d[0].res_count = cpu_to_le16(packet->timestamp); - /* The DMA format for asyncronous link packets is different + /* + * The DMA format for asyncronous link packets is different * from the IEEE1394 layout, so shift the fields around * accordingly. If header_length is 8, it's a PHY packet, to - * which we need to prepend an extra quadlet. */ + * which we need to prepend an extra quadlet. + */ header = (__le32 *) &d[1]; if (packet->header_length > 8) { @@ -703,14 +715,18 @@ static int handle_at_packet(struct context *context, break; case OHCI1394_evt_flushed: - /* The packet was flushed should give same error as - * when we try to use a stale generation count. */ + /* + * The packet was flushed should give same error as + * when we try to use a stale generation count. + */ packet->ack = RCODE_GENERATION; break; case OHCI1394_evt_missing_ack: - /* Using a valid (current) generation count, but the - * node is not on the bus or not sending acks. */ + /* + * Using a valid (current) generation count, but the + * node is not on the bus or not sending acks. + */ packet->ack = RCODE_NO_ACK; break; @@ -887,10 +903,12 @@ static void bus_reset_tasklet(unsigned long data) } ohci->node_id = reg & 0xffff; - /* The count in the SelfIDCount register is the number of + /* + * The count in the SelfIDCount register is the number of * bytes in the self ID receive buffer. Since we also receive * the inverted quadlets and a header quadlet, we shift one - * bit extra to get the actual number of self IDs. */ + * bit extra to get the actual number of self IDs. + */ self_id_count = (reg_read(ohci, OHCI1394_SelfIDCount) >> 3) & 0x3ff; generation = (le32_to_cpu(ohci->self_id_cpu[0]) >> 16) & 0xff; @@ -901,7 +919,8 @@ static void bus_reset_tasklet(unsigned long data) ohci->self_id_buffer[j] = le32_to_cpu(ohci->self_id_cpu[i]); } - /* Check the consistency of the self IDs we just read. The + /* + * Check the consistency of the self IDs we just read. The * problem we face is that a new bus reset can start while we * read out the self IDs from the DMA buffer. If this happens, * the DMA buffer will be overwritten with new self IDs and we @@ -911,7 +930,8 @@ static void bus_reset_tasklet(unsigned long data) * self IDs in the buffer before reading them out and compare * it to the current generation after reading them out. If * the two generations match we know we have a consistent set - * of self IDs. */ + * of self IDs. + */ new_generation = (reg_read(ohci, OHCI1394_SelfIDCount) >> 16) & 0xff; if (new_generation != generation) { @@ -928,12 +948,14 @@ static void bus_reset_tasklet(unsigned long data) context_stop(&ohci->at_response_ctx); reg_write(ohci, OHCI1394_IntEventClear, OHCI1394_busReset); - /* This next bit is unrelated to the AT context stuff but we + /* + * This next bit is unrelated to the AT context stuff but we * have to do it under the spinlock also. If a new config rom * was set up before this reset, the old one is now no longer * in use and we can free it. Update the config rom pointers * to point to the current config rom and clear the - * next_config_rom pointer so a new udpate can take place. */ + * next_config_rom pointer so a new udpate can take place. + */ if (ohci->next_config_rom != NULL) { dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE, @@ -942,10 +964,12 @@ static void bus_reset_tasklet(unsigned long data) ohci->config_rom_bus = ohci->next_config_rom_bus; ohci->next_config_rom = NULL; - /* Restore config_rom image and manually update + /* + * Restore config_rom image and manually update * config_rom registers. Writing the header quadlet * will indicate that the config rom is ready, so we - * do that last. */ + * do that last. + */ reg_write(ohci, OHCI1394_BusOptions, be32_to_cpu(ohci->config_rom[2])); ohci->config_rom[0] = cpu_to_be32(ohci->next_header); @@ -1018,7 +1042,8 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length) struct fw_ohci *ohci = fw_ohci(card); struct pci_dev *dev = to_pci_dev(card->device); - /* When the link is not yet enabled, the atomic config rom + /* + * When the link is not yet enabled, the atomic config rom * update mechanism described below in ohci_set_config_rom() * is not active. We have to update ConfigRomHeader and * BusOptions manually, and the write to ConfigROMmap takes @@ -1067,8 +1092,10 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length) OHCI1394_HCControl_BIBimageValid); flush_writes(ohci); - /* We are ready to go, initiate bus reset to finish the - * initialization. */ + /* + * We are ready to go, initiate bus reset to finish the + * initialization. + */ fw_core_initiate_bus_reset(&ohci->card, 1); @@ -1086,7 +1113,8 @@ ohci_set_config_rom(struct fw_card *card, u32 *config_rom, size_t length) ohci = fw_ohci(card); - /* When the OHCI controller is enabled, the config rom update + /* + * When the OHCI controller is enabled, the config rom update * mechanism is a bit tricky, but easy enough to use. See * section 5.5.6 in the OHCI specification. * @@ -1141,11 +1169,13 @@ ohci_set_config_rom(struct fw_card *card, u32 *config_rom, size_t length) spin_unlock_irqrestore(&ohci->lock, flags); - /* Now initiate a bus reset to have the changes take + /* + * Now initiate a bus reset to have the changes take * effect. We clean up the old config rom memory and DMA * mappings in the bus reset tasklet, since the OHCI * controller could need to access it before the bus reset - * takes effect. */ + * takes effect. + */ if (retval == 0) fw_core_initiate_bus_reset(&ohci->card, 1); @@ -1196,8 +1226,10 @@ ohci_enable_phys_dma(struct fw_card *card, int node_id, int generation) unsigned long flags; int n, retval = 0; - /* FIXME: Make sure this bitmask is cleared when we clear the busReset - * interrupt bit. Clear physReqResourceAllBuses on bus reset. */ + /* + * FIXME: Make sure this bitmask is cleared when we clear the busReset + * interrupt bit. Clear physReqResourceAllBuses on bus reset. + */ spin_lock_irqsave(&ohci->lock, flags); @@ -1206,8 +1238,10 @@ ohci_enable_phys_dma(struct fw_card *card, int node_id, int generation) goto out; } - /* NOTE, if the node ID contains a non-local bus ID, physical DMA is - * enabled for _all_ nodes on remote buses. */ + /* + * Note, if the node ID contains a non-local bus ID, physical DMA is + * enabled for _all_ nodes on remote buses. + */ n = (node_id & 0xffc0) == LOCAL_BUS ? node_id & 0x3f : 63; if (n < 32) @@ -1257,11 +1291,13 @@ static int handle_ir_dualbuffer_packet(struct context *context, p = db + 1; end = p + header_length; while (p < end && i + ctx->base.header_size <= PAGE_SIZE) { - /* The iso header is byteswapped to little endian by + /* + * The iso header is byteswapped to little endian by * the controller, but the remaining header quadlets * are big endian. We want to present all the headers * as big endian, so we have to swap the first - * quadlet. */ + * quadlet. + */ *(u32 *) (ctx->header + i) = __swab32(*(u32 *) (p + 4)); memcpy(ctx->header + i + 4, p + 8, ctx->base.header_size - 4); i += ctx->base.header_size; @@ -1457,8 +1493,10 @@ ohci_queue_iso_transmit(struct fw_iso_context *base, u32 payload_index, payload_end_index, next_page_index; int page, end_page, i, length, offset; - /* FIXME: Cycle lost behavior should be configurable: lose - * packet, retransmit or terminate.. */ + /* + * FIXME: Cycle lost behavior should be configurable: lose + * packet, retransmit or terminate.. + */ p = packet; payload_index = payload; @@ -1553,8 +1591,10 @@ ohci_queue_iso_receive_dualbuffer(struct fw_iso_context *base, u32 z, header_z, length, rest; int page, offset, packet_count, header_size; - /* FIXME: Cycle lost behavior should be configurable: lose - * packet, retransmit or terminate.. */ + /* + * FIXME: Cycle lost behavior should be configurable: lose + * packet, retransmit or terminate.. + */ if (packet->skip) { d = context_get_descriptors(&ctx->context, 2, &d_bus); @@ -1572,8 +1612,10 @@ ohci_queue_iso_receive_dualbuffer(struct fw_iso_context *base, p = packet; z = 2; - /* The OHCI controller puts the status word in the header - * buffer too, so we need 4 extra bytes per packet. */ + /* + * The OHCI controller puts the status word in the header + * buffer too, so we need 4 extra bytes per packet. + */ packet_count = p->header_length / ctx->base.header_size; header_size = packet_count * (ctx->base.header_size + 4); @@ -1673,8 +1715,6 @@ static int software_reset(struct fw_ohci *ohci) return -EBUSY; } -/* ---------- pci subsystem interface ---------- */ - enum { CLEANUP_SELF_ID, CLEANUP_REGISTERS, @@ -1753,11 +1793,13 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent) return cleanup(ohci, CLEANUP_REGISTERS, -EBUSY); } - /* Now enable LPS, which we need in order to start accessing + /* + * Now enable LPS, which we need in order to start accessing * most of the registers. In fact, on some cards (ALI M5251), * accessing registers in the SClk domain without LPS enabled * will lock up the machine. Wait 50msec to make sure we have - * full link enabled. */ + * full link enabled. + */ reg_write(ohci, OHCI1394_HCControlSet, OHCI1394_HCControl_LPS | OHCI1394_HCControl_postedWriteEnable); @@ -1854,8 +1896,10 @@ static void pci_remove(struct pci_dev *dev) flush_writes(ohci); fw_core_remove_card(&ohci->card); - /* FIXME: Fail all pending packets here, now that the upper - * layers can't queue any more. */ + /* + * FIXME: Fail all pending packets here, now that the upper + * layers can't queue any more. + */ software_reset(ohci); free_irq(dev->irq, ohci); diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c index 7ce9b81..eb3bddb 100644 --- a/drivers/firewire/fw-sbp2.c +++ b/drivers/firewire/fw-sbp2.c @@ -1,5 +1,5 @@ -/* -*- c-basic-offset: 8 -*- - * fw-spb2.c -- SBP2 driver (SCSI over IEEE1394) +/* + * SBP2 driver (SCSI over IEEE1394) * * Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net> * @@ -18,7 +18,8 @@ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -/* The basic structure of this driver is based the old storage driver, +/* + * The basic structure of this driver is based on the old storage driver, * drivers/ieee1394/sbp2.c, originally written by * James Goodwin <jamesg@filanet.com> * with later contributions and ongoing maintenance from @@ -60,11 +61,13 @@ struct sbp2_device { u32 workarounds; int login_id; - /* We cache these addresses and only update them once we've + /* + * We cache these addresses and only update them once we've * logged in or reconnected to the sbp2 device. That way, any * IO to the device will automatically fail and get retried if * it happens in a window where the device is not ready to - * handle it (e.g. after a bus reset but before we reconnect). */ + * handle it (e.g. after a bus reset but before we reconnect). + */ int node_id; int address_high; int generation; @@ -239,10 +242,14 @@ static const struct { .model = ~0, .workarounds = SBP2_WORKAROUND_128K_MAX_TRANS, }, - /* There are iPods (2nd gen, 3rd gen) with model_id == 0, but + + /* + * There are iPods (2nd gen, 3rd gen) with model_id == 0, but * these iPods do not feature the read_capacity bug according * to one report. Read_capacity behaviour as well as model_id - * could change due to Apple-supplied firmware updates though. */ + * could change due to Apple-supplied firmware updates though. + */ + /* iPod 4th generation. */ { .firmware_revision = 0x0a2700, .model = 0x000021, @@ -398,9 +405,10 @@ sbp2_send_management_orb(struct fw_unit *unit, int node_id, int generation, if (orb == NULL) return -ENOMEM; - /* The sbp2 device is going to send a block read request to - * read out the request from host memory, so map it for - * dma. */ + /* + * The sbp2 device is going to send a block read request to + * read out the request from host memory, so map it for dma. + */ orb->base.request_bus = dma_map_single(device->card->device, &orb->request, sizeof orb->request, DMA_TO_DEVICE); @@ -426,10 +434,11 @@ sbp2_send_management_orb(struct fw_unit *unit, int node_id, int generation, orb->request.status_fifo.high = sd->address_handler.offset >> 32; orb->request.status_fifo.low = sd->address_handler.offset; - /* FIXME: Yeah, ok this isn't elegant, we hardwire exclusive + /* + * FIXME: Yeah, ok this isn't elegant, we hardwire exclusive * login and 1 second reconnect time. The reconnect setting - * is probably fine, but the exclusive login should be an - * option. */ + * is probably fine, but the exclusive login should be an option. + */ if (function == SBP2_LOGIN_REQUEST) { orb->request.misc |= management_orb_exclusive | @@ -592,8 +601,10 @@ static void sbp2_login(struct work_struct *work) sbp2_send_management_orb(unit, sd->node_id, sd->generation, SBP2_LOGOUT_REQUEST, sd->login_id, NULL); - /* Set this back to sbp2_login so we fall back and - * retry login on bus reset. */ + /* + * Set this back to sbp2_login so we fall back and + * retry login on bus reset. + */ PREPARE_DELAYED_WORK(&sd->work, sbp2_login); } kref_put(&sd->kref, release_sbp2_device); @@ -633,9 +644,11 @@ static int sbp2_probe(struct device *dev) return -EBUSY; } - /* Scan unit directory to get management agent address, + /* + * Scan unit directory to get management agent address, * firmware revison and model. Initialize firmware_revision - * and model to values that wont match anything in our table. */ + * and model to values that wont match anything in our table. + */ firmware_revision = 0xff000000; model = 0xff000000; fw_csr_iterator_init(&ci, unit->directory); @@ -673,9 +686,11 @@ static int sbp2_probe(struct device *dev) get_device(&unit->device); - /* We schedule work to do the login so we can easily + /* + * We schedule work to do the login so we can easily * reschedule retries. Always get the ref before scheduling - * work.*/ + * work. + */ INIT_DELAYED_WORK(&sd->work, sbp2_login); if (schedule_delayed_work(&sd->work, 0)) kref_get(&sd->kref); @@ -834,9 +849,11 @@ complete_command_orb(struct sbp2_orb *base_orb, struct sbp2_status *status) result = sbp2_status_to_sense_data(status_get_data(*status), orb->cmd->sense_buffer); } else { - /* If the orb completes with status == NULL, something + /* + * If the orb completes with status == NULL, something * went wrong, typically a bus reset happened mid-orb - * or when sending the write (less likely). */ + * or when sending the write (less likely). + */ result = DID_BUS_BUSY << 16; } @@ -878,11 +895,13 @@ static void sbp2_command_orb_map_scatterlist(struct sbp2_command_orb *orb) count = dma_map_sg(device->card->device, sg, orb->cmd->use_sg, orb->cmd->sc_data_direction); - /* Handle the special case where there is only one element in + /* + * Handle the special case where there is only one element in * the scatter list by converting it to an immediate block * request. This is also a workaround for broken devices such * as the second generation iPod which doesn't support page - * tables. */ + * tables. + */ if (count == 1 && sg_dma_len(sg) < SBP2_MAX_SG_ELEMENT_LENGTH) { orb->request.data_descriptor.high = sd->address_high; orb->request.data_descriptor.low = sg_dma_address(sg); @@ -891,8 +910,10 @@ static void sbp2_command_orb_map_scatterlist(struct sbp2_command_orb *orb) return; } - /* Convert the scatterlist to an sbp2 page table. If any - * scatterlist entries are too big for sbp2 we split the as we go. */ + /* + * Convert the scatterlist to an sbp2 page table. If any + * scatterlist entries are too big for sbp2 we split the as we go. + */ for (i = 0, j = 0; i < count; i++) { sg_len = sg_dma_len(sg + i); sg_addr = sg_dma_address(sg + i); @@ -908,11 +929,13 @@ static void sbp2_command_orb_map_scatterlist(struct sbp2_command_orb *orb) size = sizeof orb->page_table[0] * j; - /* The data_descriptor pointer is the one case where we need + /* + * The data_descriptor pointer is the one case where we need * to fill in the node ID part of the address. All other * pointers assume that the data referenced reside on the * initiator (i.e. us), but data_descriptor can refer to data - * on other nodes so we need to put our ID in descriptor.high. */ + * on other nodes so we need to put our ID in descriptor.high. + */ orb->page_table_bus = dma_map_single(device->card->device, orb->page_table, @@ -933,8 +956,10 @@ static void sbp2_command_orb_map_buffer(struct sbp2_command_orb *orb) struct fw_device *device = fw_device(unit->device.parent); struct sbp2_device *sd = unit->device.driver_data; - /* As for map_scatterlist, we need to fill in the high bits of - * the data_descriptor pointer. */ + /* + * As for map_scatterlist, we need to fill in the high bits of + * the data_descriptor pointer. + */ orb->request_buffer_bus = dma_map_single(device->card->device, @@ -956,8 +981,10 @@ static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done) struct sbp2_device *sd = unit->device.driver_data; struct sbp2_command_orb *orb; - /* Bidirectional commands are not yet implemented, and unknown - * transfer direction not handled. */ + /* + * Bidirectional commands are not yet implemented, and unknown + * transfer direction not handled. + */ if (cmd->sc_data_direction == DMA_BIDIRECTIONAL) { fw_error("Cannot handle DMA_BIDIRECTIONAL - rejecting command"); goto fail_alloc; @@ -983,10 +1010,12 @@ static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done) orb->request.next.high = SBP2_ORB_NULL; orb->request.next.low = 0x0; - /* At speed 100 we can do 512 bytes per packet, at speed 200, + /* + * At speed 100 we can do 512 bytes per packet, at speed 200, * 1024 bytes per packet etc. The SBP-2 max_payload field * specifies the max payload size as 2 ^ (max_payload + 2), so - * if we set this to max_speed + 7, we get the right value. */ + * if we set this to max_speed + 7, we get the right value. + */ orb->request.misc = command_orb_max_payload(device->node->max_speed + 7) | command_orb_speed(device->node->max_speed) | @@ -1002,9 +1031,11 @@ static int sbp2_scsi_queuecommand(struct scsi_cmnd *cmd, scsi_done_fn_t done) if (cmd->use_sg) { sbp2_command_orb_map_scatterlist(orb); } else if (cmd->request_bufflen > SBP2_MAX_SG_ELEMENT_LENGTH) { - /* FIXME: Need to split this into a sg list... but + /* + * FIXME: Need to split this into a sg list... but * could we get the scsi or blk layer to do that by - * reporting our max supported block size? */ + * reporting our max supported block size? + */ fw_error("command > 64k\n"); goto fail_bufflen; } else if (cmd->request_bufflen > 0) { diff --git a/drivers/firewire/fw-topology.c b/drivers/firewire/fw-topology.c index 018c6b8..c26d5d5 100644 --- a/drivers/firewire/fw-topology.c +++ b/drivers/firewire/fw-topology.c @@ -1,6 +1,5 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-topology.c - Incremental bus scan, based on bus topology +/* + * Incremental bus scan, based on bus topology * * Copyright (C) 2004-2006 Kristian Hoegsberg <krh@bitplanet.net> * @@ -69,10 +68,12 @@ static u32 *count_ports(u32 *sid, int *total_port_count, int *child_port_count) sid++; q = *sid; - /* Check that the extra packets actually are + /* + * Check that the extra packets actually are * extended self ID packets and that the * sequence numbers in the extended self ID - * packets increase as expected. */ + * packets increase as expected. + */ if (!self_id_extended(q) || seq != self_id_ext_sequence(q)) @@ -113,7 +114,8 @@ static struct fw_node *fw_node_create(u32 sid, int port_count, int color) return node; } -/* Compute the maximum hop count for this node and it's children. The +/* + * Compute the maximum hop count for this node and it's children. The * maximum hop count is the maximum number of connections between any * two nodes in the subtree rooted at this node. We need this for * setting the gap count. As we build the tree bottom up in @@ -202,8 +204,10 @@ static struct fw_node *build_tree(struct fw_card *card, return NULL; } - /* Seek back from the top of our stack to find the - * start of the child nodes for this node. */ + /* + * Seek back from the top of our stack to find the + * start of the child nodes for this node. + */ for (i = 0, h = &stack; i < child_port_count; i++) h = h->prev; child = fw_node(h); @@ -230,7 +234,8 @@ static struct fw_node *build_tree(struct fw_card *card, for (i = 0; i < port_count; i++) { switch (get_port_type(sid, i)) { case SELFID_PORT_PARENT: - /* Who's your daddy? We dont know the + /* + * Who's your daddy? We dont know the * parent node at this time, so we * temporarily abuse node->color for * remembering the entry in the @@ -245,8 +250,10 @@ static struct fw_node *build_tree(struct fw_card *card, case SELFID_PORT_CHILD: node->ports[i].node = child; - /* Fix up parent reference for this - * child node. */ + /* + * Fix up parent reference for this + * child node. + */ child->ports[child->color].node = node; child->color = card->color; child = fw_node(child->link.next); @@ -254,9 +261,11 @@ static struct fw_node *build_tree(struct fw_card *card, } } - /* Check that the node reports exactly one parent + /* + * Check that the node reports exactly one parent * port, except for the root, which of course should - * have no parents. */ + * have no parents. + */ if ((next_sid == end && parent_count != 0) || (next_sid < end && parent_count != 1)) { fw_error("Parent port inconsistency for node %d: " @@ -269,9 +278,11 @@ static struct fw_node *build_tree(struct fw_card *card, list_add_tail(&node->link, &stack); stack_depth += 1 - child_port_count; - /* If all PHYs does not report the same gap count + /* + * If all PHYs does not report the same gap count * setting, we fall back to 63 which will force a gap - * count reconfiguration and a reset. */ + * count reconfiguration and a reset. + */ if (self_id_gap_count(q) != gap_count) gap_count = 63; @@ -427,9 +438,11 @@ update_tree(struct fw_card *card, struct fw_node *root) for (i = 0; i < node0->port_count; i++) { if (node0->ports[i].node && node1->ports[i].node) { - /* This port didn't change, queue the + /* + * This port didn't change, queue the * connected node for further - * investigation. */ + * investigation. + */ if (node0->ports[i].node->color == card->color) continue; list_add_tail(&node0->ports[i].node->link, @@ -437,19 +450,23 @@ update_tree(struct fw_card *card, struct fw_node *root) list_add_tail(&node1->ports[i].node->link, &list1); } else if (node0->ports[i].node) { - /* The nodes connected here were + /* + * The nodes connected here were * unplugged; unref the lost nodes and * queue FW_NODE_LOST callbacks for - * them. */ + * them. + */ for_each_fw_node(card, node0->ports[i].node, report_lost_node); node0->ports[i].node = NULL; } else if (node1->ports[i].node) { - /* One or more node were connected to + /* + * One or more node were connected to * this port. Move the new nodes into * the tree and queue FW_NODE_CREATED - * callbacks for them. */ + * callbacks for them. + */ move_tree(node0, node1, i); for_each_fw_node(card, node0->ports[i].node, report_found_node); @@ -486,9 +503,11 @@ fw_core_handle_bus_reset(struct fw_card *card, spin_lock_irqsave(&card->lock, flags); - /* If the new topology has a different self_id_count the topology + /* + * If the new topology has a different self_id_count the topology * changed, either nodes were added or removed. In that case we - * reset the IRM reset counter. */ + * reset the IRM reset counter. + */ if (card->self_id_count != self_id_count) card->bm_retries = 0; diff --git a/drivers/firewire/fw-topology.h b/drivers/firewire/fw-topology.h index 0778077..be2a6be 100644 --- a/drivers/firewire/fw-topology.h +++ b/drivers/firewire/fw-topology.h @@ -1,7 +1,4 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-topology.h -- Incremental bus scan, based on bus topology - * +/* * Copyright (C) 2003-2006 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify diff --git a/drivers/firewire/fw-transaction.c b/drivers/firewire/fw-transaction.c index d36dd51..e4355de 100644 --- a/drivers/firewire/fw-transaction.c +++ b/drivers/firewire/fw-transaction.c @@ -1,6 +1,5 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-transaction.c - core IEEE1394 transaction logic +/* + * Core IEEE1394 transaction logic * * Copyright (C) 2004-2006 Kristian Hoegsberg <krh@bitplanet.net> * @@ -85,21 +84,27 @@ close_transaction(struct fw_transaction *transaction, return -ENOENT; } -/* Only valid for transactions that are potentially pending (ie have - * been sent). */ +/* + * Only valid for transactions that are potentially pending (ie have + * been sent). + */ int fw_cancel_transaction(struct fw_card *card, struct fw_transaction *transaction) { - /* Cancel the packet transmission if it's still queued. That + /* + * Cancel the packet transmission if it's still queued. That * will call the packet transmission callback which cancels - * the transaction. */ + * the transaction. + */ if (card->driver->cancel_packet(card, &transaction->packet) == 0) return 0; - /* If the request packet has already been sent, we need to see - * if the transaction is still pending and remove it in that case. */ + /* + * If the request packet has already been sent, we need to see + * if the transaction is still pending and remove it in that case. + */ return close_transaction(transaction, card, RCODE_CANCELLED, NULL, 0); } @@ -131,8 +136,10 @@ transmit_complete_callback(struct fw_packet *packet, close_transaction(t, card, RCODE_TYPE_ERROR, NULL, 0); break; default: - /* In this case the ack is really a juju specific - * rcode, so just forward that to the callback. */ + /* + * In this case the ack is really a juju specific + * rcode, so just forward that to the callback. + */ close_transaction(t, card, status, NULL, 0); break; } @@ -243,13 +250,17 @@ fw_send_request(struct fw_card *card, struct fw_transaction *t, unsigned long flags; int tlabel, source; - /* Bump the flush timer up 100ms first of all so we - * don't race with a flush timer callback. */ + /* + * Bump the flush timer up 100ms first of all so we + * don't race with a flush timer callback. + */ mod_timer(&card->flush_timer, jiffies + DIV_ROUND_UP(HZ, 10)); - /* Allocate tlabel from the bitmap and put the transaction on - * the list while holding the card spinlock. */ + /* + * Allocate tlabel from the bitmap and put the transaction on + * the list while holding the card spinlock. + */ spin_lock_irqsave(&card->lock, flags); @@ -336,9 +347,11 @@ void fw_flush_transactions(struct fw_card *card) list_for_each_entry_safe(t, next, &list, link) { card->driver->cancel_packet(card, &t->packet); - /* At this point cancel_packet will never call the + /* + * At this point cancel_packet will never call the * transaction callback, since we just took all the - * transactions out of the list. So do it here.*/ + * transactions out of the list. So do it here. + */ t->callback(card, RCODE_CANCELLED, NULL, 0, t->callback_data); } } @@ -587,9 +600,11 @@ allocate_request(struct fw_packet *p) void fw_send_response(struct fw_card *card, struct fw_request *request, int rcode) { - /* Broadcast packets are reported as ACK_COMPLETE, so this + /* + * Broadcast packets are reported as ACK_COMPLETE, so this * check is sufficient to ensure we don't send response to - * broadcast packets or posted writes. */ + * broadcast packets or posted writes. + */ if (request->ack != ACK_PENDING) return; @@ -639,11 +654,13 @@ fw_core_handle_request(struct fw_card *card, struct fw_packet *p) offset, request->length); spin_unlock_irqrestore(&address_handler_lock, flags); - /* FIXME: lookup the fw_node corresponding to the sender of + /* + * FIXME: lookup the fw_node corresponding to the sender of * this request and pass that to the address handler instead * of the node ID. We may also want to move the address * allocations to fw_node so we only do this callback if the - * upper layers registered it for this node. */ + * upper layers registered it for this node. + */ if (handler == NULL) fw_send_response(card, request, RCODE_ADDRESS_ERROR); @@ -687,8 +704,10 @@ fw_core_handle_response(struct fw_card *card, struct fw_packet *p) return; } - /* FIXME: sanity check packet, is length correct, does tcodes - * and addresses match. */ + /* + * FIXME: sanity check packet, is length correct, does tcodes + * and addresses match. + */ switch (tcode) { case TCODE_READ_QUADLET_RESPONSE: @@ -790,11 +809,13 @@ handle_registers(struct fw_card *card, struct fw_request *request, case CSR_BANDWIDTH_AVAILABLE: case CSR_CHANNELS_AVAILABLE_HI: case CSR_CHANNELS_AVAILABLE_LO: - /* FIXME: these are handled by the OHCI hardware and + /* + * FIXME: these are handled by the OHCI hardware and * the stack never sees these request. If we add * support for a new type of controller that doesn't * handle this in hardware we need to deal with these - * transactions. */ + * transactions. + */ BUG(); break; diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h index 6352734..1b7e4dc 100644 --- a/drivers/firewire/fw-transaction.h +++ b/drivers/firewire/fw-transaction.h @@ -1,7 +1,4 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-transaction.h - Header for IEEE1394 transaction logic - * +/* * Copyright (C) 2003-2006 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify @@ -209,7 +206,8 @@ struct fw_packet { size_t payload_length; u32 timestamp; - /* This callback is called when the packet transmission has + /* + * This callback is called when the packet transmission has * completed; for successful transmission, the status code is * the ack received from the destination, otherwise it's a * negative errno: ENOMEM, ESTALE, ETIMEDOUT, ENODEV, EIO. @@ -230,8 +228,10 @@ struct fw_transaction { struct fw_packet packet; - /* The data passed to the callback is valid only during the - * callback. */ + /* + * The data passed to the callback is valid only during the + * callback. + */ fw_transaction_callback_t callback; void *callback_data; }; @@ -291,8 +291,10 @@ struct fw_card { int link_speed; int config_rom_generation; - /* We need to store up to 4 self ID for a maximum of 63 - * devices plus 3 words for the topology map header. */ + /* + * We need to store up to 4 self ID for a maximum of 63 + * devices plus 3 words for the topology map header. + */ int self_id_count; u32 topology_map[252 + 3]; @@ -318,12 +320,14 @@ struct fw_card { struct fw_card *fw_card_get(struct fw_card *card); void fw_card_put(struct fw_card *card); -/* The iso packet format allows for an immediate header/payload part +/* + * The iso packet format allows for an immediate header/payload part * stored in 'header' immediately after the packet info plus an * indirect payload part that is pointer to by the 'payload' field. * Applications can use one or the other or both to implement simple * low-bandwidth streaming (e.g. audio) or more advanced - * scatter-gather streaming (e.g. assembling video frame automatically). */ + * scatter-gather streaming (e.g. assembling video frame automatically). + */ struct fw_iso_packet { u16 payload_length; /* Length of indirect payload. */ @@ -352,11 +356,13 @@ typedef void (*fw_iso_callback_t) (struct fw_iso_context *context, void *header, void *data); -/* An iso buffer is just a set of pages mapped for DMA in the +/* + * An iso buffer is just a set of pages mapped for DMA in the * specified direction. Since the pages are to be used for DMA, they * are not mapped into the kernel virtual address space. We store the * DMA address in the page private. The helper function - * fw_iso_buffer_map() will map the pages into a given vma. */ + * fw_iso_buffer_map() will map the pages into a given vma. + */ struct fw_iso_buffer { enum dma_data_direction direction; @@ -408,18 +414,22 @@ fw_iso_context_stop(struct fw_iso_context *ctx); struct fw_card_driver { const char *name; - /* Enable the given card with the given initial config rom. + /* + * Enable the given card with the given initial config rom. * This function is expected to activate the card, and either * enable the PHY or set the link_on bit and initiate a bus - * reset. */ + * reset. + */ int (*enable) (struct fw_card *card, u32 *config_rom, size_t length); int (*update_phy_reg) (struct fw_card *card, int address, int clear_bits, int set_bits); - /* Update the config rom for an enabled card. This function + /* + * Update the config rom for an enabled card. This function * should change the config rom that is presented on the bus - * an initiate a bus reset. */ + * an initiate a bus reset. + */ int (*set_config_rom) (struct fw_card *card, u32 *config_rom, size_t length); @@ -428,12 +438,14 @@ struct fw_card_driver { /* Calling cancel is valid once a packet has been submitted. */ int (*cancel_packet) (struct fw_card *card, struct fw_packet *packet); - /* Allow the specified node ID to do direct DMA out and in of + /* + * Allow the specified node ID to do direct DMA out and in of * host memory. The card will disable this for all node when * a bus reset happens, so driver need to reenable this after * bus reset. Returns 0 on success, -ENODEV if the card * doesn't support this, -ESTALE if the generation doesn't - * match. */ + * match. + */ int (*enable_phys_dma) (struct fw_card *card, int node_id, int generation); @@ -473,15 +485,15 @@ void fw_flush_transactions(struct fw_card *card); void fw_send_phy_config(struct fw_card *card, int node_id, int generation, int gap_count); -/* Called by the topology code to inform the device code of node - * activity; found, lost, or updated nodes */ +/* + * Called by the topology code to inform the device code of node + * activity; found, lost, or updated nodes. + */ void fw_node_event(struct fw_card *card, struct fw_node *node, int event); /* API used by card level drivers */ -/* Do we need phy speed here also? If we add more args, maybe we - should go back to struct fw_card_info. */ void fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver, struct device *device); |