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Merge firewire branches to be released post v2.6.35

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Conflicts:
	drivers/firewire/core-card.c
	drivers/firewire/core-cdev.c

and forgotten #include <linux/time.h> in drivers/firewire/ohci.c

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2010-08-02 09:33:25 +02:00
commit e78483c5ae
31 changed files with 4308 additions and 576 deletions
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1
Documentation/ioctl/ioctl-number.txt
View File

@ -79,6 +79,7 @@ Code Seq#(hex) Include File Comments
0x22 all scsi/sg.h
'#' 00-3F IEEE 1394 Subsystem Block for the entire subsystem
'$' 00-0F linux/perf_counter.h, linux/perf_event.h
'&' 00-07 drivers/firewire/nosy-user.h
'1' 00-1F <linux/timepps.h> PPS kit from Ulrich Windl
<ftp://ftp.de.kernel.org/pub/linux/daemons/ntp/PPS/>
'2' 01-04 linux/i2o.h

1
MAINTAINERS
View File

@ -2307,6 +2307,7 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6.git
S: Maintained
F: drivers/firewire/
F: include/linux/firewire*.h
F: tools/firewire/
FIRMWARE LOADER (request_firmware)
S: Orphan

24
drivers/firewire/Kconfig
View File

@ -66,4 +66,28 @@ config FIREWIRE_NET
source "drivers/ieee1394/Kconfig"
config FIREWIRE_NOSY
tristate "Nosy - a FireWire traffic sniffer for PCILynx cards"
depends on PCI
help
Nosy is an IEEE 1394 packet sniffer that is used for protocol
analysis and in development of IEEE 1394 drivers, applications,
or firmwares.
This driver lets you use a Texas Instruments PCILynx 1394 to PCI
link layer controller TSB12LV21/A/B as a low-budget bus analyzer.
PCILynx is a nowadays very rare IEEE 1394 controller which is
not OHCI 1394 compliant.
The following cards are known to be based on PCILynx or PCILynx-2:
IOI IOI-1394TT (PCI card), Unibrain Fireboard 400 PCI Lynx-2
(PCI card), Newer Technology FireWire 2 Go (CardBus card),
Apple Power Mac G3 blue & white (onboard controller).
To compile this driver as a module, say M here: The module will be
called nosy. Source code of a userspace interface to nosy, called
nosy-dump, can be found in tools/firewire/ of the kernel sources.
If unsure, say N.
endmenu

1
drivers/firewire/Makefile
View File

@ -12,3 +12,4 @@ obj-$(CONFIG_FIREWIRE) += firewire-core.o
obj-$(CONFIG_FIREWIRE_OHCI) += firewire-ohci.o
obj-$(CONFIG_FIREWIRE_SBP2) += firewire-sbp2.o
obj-$(CONFIG_FIREWIRE_NET) += firewire-net.o
obj-$(CONFIG_FIREWIRE_NOSY) += nosy.o

218
drivers/firewire/core-card.c
View File

@ -204,17 +204,62 @@ void fw_core_remove_descriptor(struct fw_descriptor *desc)
}
EXPORT_SYMBOL(fw_core_remove_descriptor);
static int reset_bus(struct fw_card *card, bool short_reset)
{
int reg = short_reset ? 5 : 1;
int bit = short_reset ? PHY_BUS_SHORT_RESET : PHY_BUS_RESET;
return card->driver->update_phy_reg(card, reg, 0, bit);
}
void fw_schedule_bus_reset(struct fw_card *card, bool delayed, bool short_reset)
{
/* We don't try hard to sort out requests of long vs. short resets. */
card->br_short = short_reset;
/* Use an arbitrary short delay to combine multiple reset requests. */
fw_card_get(card);
if (!schedule_delayed_work(&card->br_work,
delayed ? DIV_ROUND_UP(HZ, 100) : 0))
fw_card_put(card);
}
EXPORT_SYMBOL(fw_schedule_bus_reset);
static void br_work(struct work_struct *work)
{
struct fw_card *card = container_of(work, struct fw_card, br_work.work);
/* Delay for 2s after last reset per IEEE 1394 clause 8.2.1. */
if (card->reset_jiffies != 0 &&
time_is_after_jiffies(card->reset_jiffies + 2 * HZ)) {
if (!schedule_delayed_work(&card->br_work, 2 * HZ))
fw_card_put(card);
return;
}
fw_send_phy_config(card, FW_PHY_CONFIG_NO_NODE_ID, card->generation,
FW_PHY_CONFIG_CURRENT_GAP_COUNT);
reset_bus(card, card->br_short);
fw_card_put(card);
}
static void allocate_broadcast_channel(struct fw_card *card, int generation)
{
int channel, bandwidth = 0;
fw_iso_resource_manage(card, generation, 1ULL << 31, &channel,
&bandwidth, true, card->bm_transaction_data);
if (channel == 31) {
if (!card->broadcast_channel_allocated) {
fw_iso_resource_manage(card, generation, 1ULL << 31,
&channel, &bandwidth, true,
card->bm_transaction_data);
if (channel != 31) {
fw_notify("failed to allocate broadcast channel\n");
return;
}
card->broadcast_channel_allocated = true;
device_for_each_child(card->device, (void *)(long)generation,
fw_device_set_broadcast_channel);
}
device_for_each_child(card->device, (void *)(long)generation,
fw_device_set_broadcast_channel);
}
static const char gap_count_table[] = {
@ -224,27 +269,26 @@ static const char gap_count_table[] = {
void fw_schedule_bm_work(struct fw_card *card, unsigned long delay)
{
fw_card_get(card);
if (!schedule_delayed_work(&card->work, delay))
if (!schedule_delayed_work(&card->bm_work, delay))
fw_card_put(card);
}
static void fw_card_bm_work(struct work_struct *work)
static void bm_work(struct work_struct *work)
{
struct fw_card *card = container_of(work, struct fw_card, work.work);
struct fw_card *card = container_of(work, struct fw_card, bm_work.work);
struct fw_device *root_device, *irm_device;
struct fw_node *root_node;
unsigned long flags;
int root_id, new_root_id, irm_id, local_id;
int root_id, new_root_id, irm_id, bm_id, local_id;
int gap_count, generation, grace, rcode;
bool do_reset = false;
bool root_device_is_running;
bool root_device_is_cmc;
bool irm_is_1394_1995_only;
spin_lock_irqsave(&card->lock, flags);
spin_lock_irq(&card->lock);
if (card->local_node == NULL) {
spin_unlock_irqrestore(&card->lock, flags);
spin_unlock_irq(&card->lock);
goto out_put_card;
}
@ -267,7 +311,8 @@ static void fw_card_bm_work(struct work_struct *work)
grace = time_after(jiffies, card->reset_jiffies + DIV_ROUND_UP(HZ, 8));
if (is_next_generation(generation, card->bm_generation) ||
if ((is_next_generation(generation, card->bm_generation) &&
!card->bm_abdicate) ||
(card->bm_generation != generation && grace)) {
/*
* This first step is to figure out who is IRM and
@ -298,21 +343,26 @@ static void fw_card_bm_work(struct work_struct *work)
card->bm_transaction_data[0] = cpu_to_be32(0x3f);
card->bm_transaction_data[1] = cpu_to_be32(local_id);
spin_unlock_irqrestore(&card->lock, flags);
spin_unlock_irq(&card->lock);
rcode = fw_run_transaction(card, TCODE_LOCK_COMPARE_SWAP,
irm_id, generation, SCODE_100,
CSR_REGISTER_BASE + CSR_BUS_MANAGER_ID,
card->bm_transaction_data,
sizeof(card->bm_transaction_data));
card->bm_transaction_data, 8);
if (rcode == RCODE_GENERATION)
/* Another bus reset, BM work has been rescheduled. */
goto out;
if (rcode == RCODE_COMPLETE &&
card->bm_transaction_data[0] != cpu_to_be32(0x3f)) {
bm_id = be32_to_cpu(card->bm_transaction_data[0]);
spin_lock_irq(&card->lock);
if (rcode == RCODE_COMPLETE && generation == card->generation)
card->bm_node_id =
bm_id == 0x3f ? local_id : 0xffc0 | bm_id;
spin_unlock_irq(&card->lock);
if (rcode == RCODE_COMPLETE && bm_id != 0x3f) {
/* Somebody else is BM. Only act as IRM. */
if (local_id == irm_id)
allocate_broadcast_channel(card, generation);
@ -320,7 +370,17 @@ static void fw_card_bm_work(struct work_struct *work)
goto out;
}
spin_lock_irqsave(&card->lock, flags);
if (rcode == RCODE_SEND_ERROR) {
/*
* We have been unable to send the lock request due to
* some local problem. Let's try again later and hope
* that the problem has gone away by then.
*/
fw_schedule_bm_work(card, DIV_ROUND_UP(HZ, 8));
goto out;
}
spin_lock_irq(&card->lock);
if (rcode != RCODE_COMPLETE) {
/*
@ -339,7 +399,7 @@ static void fw_card_bm_work(struct work_struct *work)
* We weren't BM in the last generation, and the last
* bus reset is less than 125ms ago. Reschedule this job.
*/
spin_unlock_irqrestore(&card->lock, flags);
spin_unlock_irq(&card->lock);
fw_schedule_bm_work(card, DIV_ROUND_UP(HZ, 8));
goto out;
}
@ -362,14 +422,12 @@ static void fw_card_bm_work(struct work_struct *work)
* 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);
spin_unlock_irq(&card->lock);
goto out;
} else if (root_device_is_cmc) {
/*
* 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.
* We will send out a force root packet for this
* node as part of the gap count optimization.
*/
new_root_id = root_id;
} else {
@ -402,19 +460,33 @@ static void fw_card_bm_work(struct work_struct *work)
(card->gap_count != gap_count || new_root_id != root_id))
do_reset = true;
spin_unlock_irqrestore(&card->lock, flags);
spin_unlock_irq(&card->lock);
if (do_reset) {
fw_notify("phy config: card %d, new root=%x, gap_count=%d\n",
card->index, new_root_id, gap_count);
fw_send_phy_config(card, new_root_id, generation, gap_count);
fw_core_initiate_bus_reset(card, 1);
reset_bus(card, true);
/* Will allocate broadcast channel after the reset. */
} else {
if (local_id == irm_id)
allocate_broadcast_channel(card, generation);
goto out;
}
if (root_device_is_cmc) {
/*
* Make sure that the cycle master sends cycle start packets.
*/
card->bm_transaction_data[0] = cpu_to_be32(CSR_STATE_BIT_CMSTR);
rcode = fw_run_transaction(card, TCODE_WRITE_QUADLET_REQUEST,
root_id, generation, SCODE_100,
CSR_REGISTER_BASE + CSR_STATE_SET,
card->bm_transaction_data, 4);
if (rcode == RCODE_GENERATION)
goto out;
}
if (local_id == irm_id)
allocate_broadcast_channel(card, generation);
out:
fw_node_put(root_node);
out_put_card:
@ -432,17 +504,23 @@ void fw_card_initialize(struct fw_card *card,
card->device = device;
card->current_tlabel = 0;
card->tlabel_mask = 0;
card->split_timeout_hi = 0;
card->split_timeout_lo = 800 << 19;
card->split_timeout_cycles = 800;
card->split_timeout_jiffies = DIV_ROUND_UP(HZ, 10);
card->color = 0;
card->broadcast_channel = BROADCAST_CHANNEL_INITIAL;
kref_init(&card->kref);
init_completion(&card->done);
INIT_LIST_HEAD(&card->transaction_list);
INIT_LIST_HEAD(&card->phy_receiver_list);
spin_lock_init(&card->lock);
card->local_node = NULL;
INIT_DELAYED_WORK(&card->work, fw_card_bm_work);
INIT_DELAYED_WORK(&card->br_work, br_work);
INIT_DELAYED_WORK(&card->bm_work, bm_work);
}
EXPORT_SYMBOL(fw_card_initialize);
@ -468,20 +546,22 @@ int fw_card_add(struct fw_card *card,
}
EXPORT_SYMBOL(fw_card_add);
/*
* The next few functions implement a dummy driver that is used 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 (and failed) by the dummy driver
* instead of calling into the module. Only functions for iso context
* shutdown still need to be provided by the card driver.
*
* .read/write_csr() should never be called anymore after the dummy driver
* was bound since they are only used within request handler context.
* .set_config_rom() is never called since the card is taken out of card_list
* before switching to the dummy driver.
*/
static int dummy_enable(struct fw_card *card,
const __be32 *config_rom, size_t length)
static int dummy_read_phy_reg(struct fw_card *card, int address)
{
BUG();
return -1;
return -ENODEV;
}
static int dummy_update_phy_reg(struct fw_card *card, int address,
@ -490,25 +570,14 @@ static int dummy_update_phy_reg(struct fw_card *card, int address,
return -ENODEV;
}
static int dummy_set_config_rom(struct fw_card *card,
const __be32 *config_rom, size_t length)
{
/*
* We take the card out of card_list before setting the dummy
* driver, so this should never get called.
*/
BUG();
return -1;
}
static void dummy_send_request(struct fw_card *card, struct fw_packet *packet)
{
packet->callback(packet, card, -ENODEV);
packet->callback(packet, card, RCODE_CANCELLED);
}
static void dummy_send_response(struct fw_card *card, struct fw_packet *packet)
{
packet->callback(packet, card, -ENODEV);
packet->callback(packet, card, RCODE_CANCELLED);
}
static int dummy_cancel_packet(struct fw_card *card, struct fw_packet *packet)
@ -522,14 +591,40 @@ static int dummy_enable_phys_dma(struct fw_card *card,
return -ENODEV;
}
static struct fw_iso_context *dummy_allocate_iso_context(struct fw_card *card,
int type, int channel, size_t header_size)
{
return ERR_PTR(-ENODEV);
}
static int dummy_start_iso(struct fw_iso_context *ctx,
s32 cycle, u32 sync, u32 tags)
{
return -ENODEV;
}
static int dummy_set_iso_channels(struct fw_iso_context *ctx, u64 *channels)
{
return -ENODEV;
}
static int dummy_queue_iso(struct fw_iso_context *ctx, struct fw_iso_packet *p,
struct fw_iso_buffer *buffer, unsigned long payload)
{
return -ENODEV;
}
static const struct fw_card_driver dummy_driver_template = {
.enable = dummy_enable,
.update_phy_reg = dummy_update_phy_reg,
.set_config_rom = dummy_set_config_rom,
.send_request = dummy_send_request,
.cancel_packet = dummy_cancel_packet,
.send_response = dummy_send_response,
.enable_phys_dma = dummy_enable_phys_dma,
.read_phy_reg = dummy_read_phy_reg,
.update_phy_reg = dummy_update_phy_reg,
.send_request = dummy_send_request,
.send_response = dummy_send_response,
.cancel_packet = dummy_cancel_packet,
.enable_phys_dma = dummy_enable_phys_dma,
.allocate_iso_context = dummy_allocate_iso_context,
.start_iso = dummy_start_iso,
.set_iso_channels = dummy_set_iso_channels,
.queue_iso = dummy_queue_iso,
};
void fw_card_release(struct kref *kref)
@ -545,7 +640,7 @@ void fw_core_remove_card(struct fw_card *card)
card->driver->update_phy_reg(card, 4,
PHY_LINK_ACTIVE | PHY_CONTENDER, 0);
fw_core_initiate_bus_reset(card, 1);
fw_schedule_bus_reset(card, false, true);
mutex_lock(&card_mutex);
list_del_init(&card->link);
@ -565,12 +660,3 @@ void fw_core_remove_card(struct fw_card *card)
WARN_ON(!list_empty(&card->transaction_list));
}
EXPORT_SYMBOL(fw_core_remove_card);
int fw_core_initiate_bus_reset(struct fw_card *card, int short_reset)
{
int reg = short_reset ? 5 : 1;
int bit = short_reset ? PHY_BUS_SHORT_RESET : PHY_BUS_RESET;
return card->driver->update_phy_reg(card, reg, 0, bit);
}
EXPORT_SYMBOL(fw_core_initiate_bus_reset);

409
drivers/firewire/core-cdev.c
View File

@ -18,6 +18,7 @@
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <linux/bug.h>
#include <linux/compat.h>
#include <linux/delay.h>
#include <linux/device.h>
@ -33,7 +34,7 @@
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/poll.h>
#include <linux/sched.h>
#include <linux/sched.h> /* required for linux/wait.h */
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
@ -47,6 +48,13 @@
#include "core.h"
/*
* ABI version history is documented in linux/firewire-cdev.h.
*/
#define FW_CDEV_KERNEL_VERSION 4
#define FW_CDEV_VERSION_EVENT_REQUEST2 4
#define FW_CDEV_VERSION_ALLOCATE_REGION_END 4
struct client {
u32 version;
struct fw_device *device;
@ -63,6 +71,9 @@ struct client {
struct fw_iso_buffer buffer;
unsigned long vm_start;
struct list_head phy_receiver_link;
u64 phy_receiver_closure;
struct list_head link;
struct kref kref;
};
@ -107,6 +118,7 @@ struct outbound_transaction_resource {
struct inbound_transaction_resource {
struct client_resource resource;
struct fw_card *card;
struct fw_request *request;
void *data;
size_t length;
@ -171,7 +183,10 @@ struct outbound_transaction_event {
struct inbound_transaction_event {
struct event event;
struct fw_cdev_event_request request;
union {
struct fw_cdev_event_request request;
struct fw_cdev_event_request2 request2;
} req;
};
struct iso_interrupt_event {
@ -179,11 +194,28 @@ struct iso_interrupt_event {
struct fw_cdev_event_iso_interrupt interrupt;
};
struct iso_interrupt_mc_event {
struct event event;
struct fw_cdev_event_iso_interrupt_mc interrupt;
};
struct iso_resource_event {
struct event event;
struct fw_cdev_event_iso_resource iso_resource;
};
struct outbound_phy_packet_event {
struct event event;
struct client *client;
struct fw_packet p;
struct fw_cdev_event_phy_packet phy_packet;
};
struct inbound_phy_packet_event {
struct event event;
struct fw_cdev_event_phy_packet phy_packet;
};
static inline void __user *u64_to_uptr(__u64 value)
{
return (void __user *)(unsigned long)value;
@ -219,6 +251,7 @@ static int fw_device_op_open(struct inode *inode, struct file *file)
idr_init(&client->resource_idr);
INIT_LIST_HEAD(&client->event_list);
init_waitqueue_head(&client->wait);
INIT_LIST_HEAD(&client->phy_receiver_link);
kref_init(&client->kref);
file->private_data = client;
@ -309,7 +342,7 @@ static void fill_bus_reset_event(struct fw_cdev_event_bus_reset *event,
event->generation = client->device->generation;
event->node_id = client->device->node_id;
event->local_node_id = card->local_node->node_id;
event->bm_node_id = 0; /* FIXME: We don't track the BM. */
event->bm_node_id = card->bm_node_id;
event->irm_node_id = card->irm_node->node_id;
event->root_node_id = card->root_node->node_id;
@ -340,7 +373,7 @@ static void queue_bus_reset_event(struct client *client)
e = kzalloc(sizeof(*e), GFP_KERNEL);
if (e == NULL) {
fw_notify("Out of memory when allocating bus reset event\n");
fw_notify("Out of memory when allocating event\n");
return;
}
@ -386,6 +419,9 @@ union ioctl_arg {
struct fw_cdev_allocate_iso_resource allocate_iso_resource;
struct fw_cdev_send_stream_packet send_stream_packet;
struct fw_cdev_get_cycle_timer2 get_cycle_timer2;
struct fw_cdev_send_phy_packet send_phy_packet;
struct fw_cdev_receive_phy_packets receive_phy_packets;
struct fw_cdev_set_iso_channels set_iso_channels;
};
static int ioctl_get_info(struct client *client, union ioctl_arg *arg)
@ -395,7 +431,7 @@ static int ioctl_get_info(struct client *client, union ioctl_arg *arg)
unsigned long ret = 0;
client->version = a->version;
a->version = FW_CDEV_VERSION;
a->version = FW_CDEV_KERNEL_VERSION;
a->card = client->device->card->index;
down_read(&fw_device_rwsem);
@ -554,6 +590,10 @@ static int init_request(struct client *client,
(request->length > 4096 || request->length > 512 << speed))
return -EIO;
if (request->tcode == TCODE_WRITE_QUADLET_REQUEST &&
request->length < 4)
return -EINVAL;
e = kmalloc(sizeof(*e) + request->length, GFP_KERNEL);
if (e == NULL)
return -ENOMEM;
@ -626,28 +666,34 @@ static void release_request(struct client *client,
if (is_fcp_request(r->request))
kfree(r->data);
else
fw_send_response(client->device->card, r->request,
RCODE_CONFLICT_ERROR);
fw_send_response(r->card, r->request, RCODE_CONFLICT_ERROR);
fw_card_put(r->card);
kfree(r);
}
static void handle_request(struct fw_card *card, struct fw_request *request,
int tcode, int destination, int source,
int generation, int speed,
unsigned long long offset,
int generation, unsigned long long offset,
void *payload, size_t length, void *callback_data)
{
struct address_handler_resource *handler = callback_data;
struct inbound_transaction_resource *r;
struct inbound_transaction_event *e;
size_t event_size0;
void *fcp_frame = NULL;
int ret;
/* card may be different from handler->client->device->card */
fw_card_get(card);
r = kmalloc(sizeof(*r), GFP_ATOMIC);
e = kmalloc(sizeof(*e), GFP_ATOMIC);
if (r == NULL || e == NULL)
if (r == NULL || e == NULL) {
fw_notify("Out of memory when allocating event\n");
goto failed;
}
r->card = card;
r->request = request;
r->data = payload;
r->length = length;
@ -669,15 +715,37 @@ static void handle_request(struct fw_card *card, struct fw_request *request,
if (ret < 0)
goto failed;
e->request.type = FW_CDEV_EVENT_REQUEST;
e->request.tcode = tcode;
e->request.offset = offset;
e->request.length = length;
e->request.handle = r->resource.handle;
e->request.closure = handler->closure;
if (handler->client->version < FW_CDEV_VERSION_EVENT_REQUEST2) {
struct fw_cdev_event_request *req = &e->req.request;
if (tcode & 0x10)
tcode = TCODE_LOCK_REQUEST;
req->type = FW_CDEV_EVENT_REQUEST;
req->tcode = tcode;
req->offset = offset;
req->length = length;
req->handle = r->resource.handle;
req->closure = handler->closure;
event_size0 = sizeof(*req);
} else {
struct fw_cdev_event_request2 *req = &e->req.request2;
req->type = FW_CDEV_EVENT_REQUEST2;
req->tcode = tcode;
req->offset = offset;
req->source_node_id = source;
req->destination_node_id = destination;
req->card = card->index;
req->generation = generation;
req->length = length;
req->handle = r->resource.handle;
req->closure = handler->closure;
event_size0 = sizeof(*req);
}
queue_event(handler->client, &e->event,
&e->request, sizeof(e->request), r->data, length);
&e->req, event_size0, r->data, length);
return;
failed:
@ -687,6 +755,8 @@ static void handle_request(struct fw_card *card, struct fw_request *request,
if (!is_fcp_request(request))
fw_send_response(card, request, RCODE_CONFLICT_ERROR);
fw_card_put(card);
}
static void release_address_handler(struct client *client,
@ -711,7 +781,11 @@ static int ioctl_allocate(struct client *client, union ioctl_arg *arg)
return -ENOMEM;
region.start = a->offset;
region.end = a->offset + a->length;
if (client->version < FW_CDEV_VERSION_ALLOCATE_REGION_END)
region.end = a->offset + a->length;
else
region.end = a->region_end;
r->handler.length = a->length;
r->handler.address_callback = handle_request;
r->handler.callback_data = r;
@ -723,6 +797,7 @@ static int ioctl_allocate(struct client *client, union ioctl_arg *arg)
kfree(r);
return ret;
}
a->offset = r->handler.offset;
r->resource.release = release_address_handler;
ret = add_client_resource(client, &r->resource, GFP_KERNEL);
@ -757,15 +832,19 @@ static int ioctl_send_response(struct client *client, union ioctl_arg *arg)
if (is_fcp_request(r->request))
goto out;
if (a->length < r->length)
r->length = a->length;
if (copy_from_user(r->data, u64_to_uptr(a->data), r->length)) {
if (a->length != fw_get_response_length(r->request)) {
ret = -EINVAL;
kfree(r->request);
goto out;
}
if (copy_from_user(r->data, u64_to_uptr(a->data), a->length)) {
ret = -EFAULT;
kfree(r->request);
goto out;
}
fw_send_response(client->device->card, r->request, a->rcode);
fw_send_response(r->card, r->request, a->rcode);
out:
fw_card_put(r->card);
kfree(r);
return ret;
@ -773,8 +852,9 @@ static int ioctl_send_response(struct client *client, union ioctl_arg *arg)
static int ioctl_initiate_bus_reset(struct client *client, union ioctl_arg *arg)
{
return fw_core_initiate_bus_reset(client->device->card,
fw_schedule_bus_reset(client->device->card, true,
arg->initiate_bus_reset.type == FW_CDEV_SHORT_RESET);
return 0;
}
static void release_descriptor(struct client *client,
@ -845,10 +925,11 @@ static void iso_callback(struct fw_iso_context *context, u32 cycle,
struct client *client = data;
struct iso_interrupt_event *e;
e = kzalloc(sizeof(*e) + header_length, GFP_ATOMIC);
if (e == NULL)
e = kmalloc(sizeof(*e) + header_length, GFP_ATOMIC);
if (e == NULL) {
fw_notify("Out of memory when allocating event\n");
return;
}
e->interrupt.type = FW_CDEV_EVENT_ISO_INTERRUPT;
e->interrupt.closure = client->iso_closure;
e->interrupt.cycle = cycle;
@ -858,27 +939,54 @@ static void iso_callback(struct fw_iso_context *context, u32 cycle,
sizeof(e->interrupt) + header_length, NULL, 0);
}
static void iso_mc_callback(struct fw_iso_context *context,
dma_addr_t completed, void *data)
{
struct client *client = data;
struct iso_interrupt_mc_event *e;
e = kmalloc(sizeof(*e), GFP_ATOMIC);
if (e == NULL) {
fw_notify("Out of memory when allocating event\n");
return;
}
e->interrupt.type = FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL;
e->interrupt.closure = client->iso_closure;
e->interrupt.completed = fw_iso_buffer_lookup(&client->buffer,
completed);
queue_event(client, &e->event, &e->interrupt,
sizeof(e->interrupt), NULL, 0);
}
static int ioctl_create_iso_context(struct client *client, union ioctl_arg *arg)
{
struct fw_cdev_create_iso_context *a = &arg->create_iso_context;
struct fw_iso_context *context;
fw_iso_callback_t cb;
/* We only support one context at this time. */
if (client->iso_context != NULL)
return -EBUSY;
if (a->channel > 63)
return -EINVAL;
BUILD_BUG_ON(FW_CDEV_ISO_CONTEXT_TRANSMIT != FW_ISO_CONTEXT_TRANSMIT ||
FW_CDEV_ISO_CONTEXT_RECEIVE != FW_ISO_CONTEXT_RECEIVE ||
FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL !=
FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL);
switch (a->type) {
case FW_ISO_CONTEXT_RECEIVE:
if (a->header_size < 4 || (a->header_size & 3))
case FW_ISO_CONTEXT_TRANSMIT:
if (a->speed > SCODE_3200 || a->channel > 63)
return -EINVAL;
cb = iso_callback;
break;
case FW_ISO_CONTEXT_TRANSMIT:
if (a->speed > SCODE_3200)
case FW_ISO_CONTEXT_RECEIVE:
if (a->header_size < 4 || (a->header_size & 3) ||
a->channel > 63)
return -EINVAL;
cb = iso_callback;
break;
case FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL:
cb = (fw_iso_callback_t)iso_mc_callback;
break;
default:
@ -886,20 +994,37 @@ static int ioctl_create_iso_context(struct client *client, union ioctl_arg *arg)
}
context = fw_iso_context_create(client->device->card, a->type,
a->channel, a->speed, a->header_size,
iso_callback, client);
a->channel, a->speed, a->header_size, cb, client);
if (IS_ERR(context))
return PTR_ERR(context);
/* We only support one context at this time. */
spin_lock_irq(&client->lock);
if (client->iso_context != NULL) {
spin_unlock_irq(&client->lock);
fw_iso_context_destroy(context);
return -EBUSY;
}
client->iso_closure = a->closure;
client->iso_context = context;
spin_unlock_irq(&client->lock);
/* We only support one context at this time. */
a->handle = 0;
return 0;
}
static int ioctl_set_iso_channels(struct client *client, union ioctl_arg *arg)
{
struct fw_cdev_set_iso_channels *a = &arg->set_iso_channels;
struct fw_iso_context *ctx = client->iso_context;
if (ctx == NULL || a->handle != 0)
return -EINVAL;
return fw_iso_context_set_channels(ctx, &a->channels);
}
/* Macros for decoding the iso packet control header. */
#define GET_PAYLOAD_LENGTH(v) ((v) & 0xffff)
#define GET_INTERRUPT(v) (((v) >> 16) & 0x01)
@ -913,7 +1038,7 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
struct fw_cdev_queue_iso *a = &arg->queue_iso;
struct fw_cdev_iso_packet __user *p, *end, *next;
struct fw_iso_context *ctx = client->iso_context;
unsigned long payload, buffer_end, header_length;
unsigned long payload, buffer_end, transmit_header_bytes = 0;
u32 control;
int count;
struct {
@ -933,7 +1058,6 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
* use the indirect payload, the iso buffer need not be mapped
* and the a->data pointer is ignored.
*/
payload = (unsigned long)a->data - client->vm_start;
buffer_end = client->buffer.page_count << PAGE_SHIFT;
if (a->data == 0 || client->buffer.pages == NULL ||
@ -942,8 +1066,10 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
buffer_end = 0;
}
p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(a->packets);
if (ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL && payload & 3)
return -EINVAL;
p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(a->packets);
if (!access_ok(VERIFY_READ, p, a->size))
return -EFAULT;
@ -959,31 +1085,32 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
u.packet.sy = GET_SY(control);
u.packet.header_length = GET_HEADER_LENGTH(control);
if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) {
if (u.packet.header_length % 4 != 0)
switch (ctx->type) {
case FW_ISO_CONTEXT_TRANSMIT:
if (u.packet.header_length & 3)
return -EINVAL;
header_length = u.packet.header_length;
} else {
/*
* 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;
} else if (u.packet.header_length == 0 ||
u.packet.header_length % ctx->header_size != 0) {
transmit_header_bytes = u.packet.header_length;
break;
case FW_ISO_CONTEXT_RECEIVE:
if (u.packet.header_length == 0 ||
u.packet.header_length % ctx->header_size != 0)
return -EINVAL;
}
header_length = 0;
break;
case FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL:
if (u.packet.payload_length == 0 ||
u.packet.payload_length & 3)
return -EINVAL;
break;
}
next = (struct fw_cdev_iso_packet __user *)
&p->header[header_length / 4];
&p->header[transmit_header_bytes / 4];
if (next > end)
return -EINVAL;
if (__copy_from_user
(u.packet.header, p->header, header_length))
(u.packet.header, p->header, transmit_header_bytes))
return -EFAULT;
if (u.packet.skip && ctx->type == FW_ISO_CONTEXT_TRANSMIT &&
u.packet.header_length + u.packet.payload_length > 0)
@ -1011,6 +1138,13 @@ static int ioctl_start_iso(struct client *client, union ioctl_arg *arg)
{
struct fw_cdev_start_iso *a = &arg->start_iso;
BUILD_BUG_ON(
FW_CDEV_ISO_CONTEXT_MATCH_TAG0 != FW_ISO_CONTEXT_MATCH_TAG0 ||
FW_CDEV_ISO_CONTEXT_MATCH_TAG1 != FW_ISO_CONTEXT_MATCH_TAG1 ||
FW_CDEV_ISO_CONTEXT_MATCH_TAG2 != FW_ISO_CONTEXT_MATCH_TAG2 ||
FW_CDEV_ISO_CONTEXT_MATCH_TAG3 != FW_ISO_CONTEXT_MATCH_TAG3 ||
FW_CDEV_ISO_CONTEXT_MATCH_ALL_TAGS != FW_ISO_CONTEXT_MATCH_ALL_TAGS);
if (client->iso_context == NULL || a->handle != 0)
return -EINVAL;
@ -1042,7 +1176,7 @@ static int ioctl_get_cycle_timer2(struct client *client, union ioctl_arg *arg)
local_irq_disable();
cycle_time = card->driver->get_cycle_time(card);
cycle_time = card->driver->read_csr(card, CSR_CYCLE_TIME);
switch (a->clk_id) {
case CLOCK_REALTIME: getnstimeofday(&ts); break;
@ -1323,28 +1457,135 @@ static int ioctl_send_stream_packet(struct client *client, union ioctl_arg *arg)
return init_request(client, &request, dest, a->speed);
}
static void outbound_phy_packet_callback(struct fw_packet *packet,
struct fw_card *card, int status)
{
struct outbound_phy_packet_event *e =
container_of(packet, struct outbound_phy_packet_event, p);
switch (status) {
/* expected: */
case ACK_COMPLETE: e->phy_packet.rcode = RCODE_COMPLETE; break;
/* should never happen with PHY packets: */
case ACK_PENDING: e->phy_packet.rcode = RCODE_COMPLETE; break;
case ACK_BUSY_X:
case ACK_BUSY_A:
case ACK_BUSY_B: e->phy_packet.rcode = RCODE_BUSY; break;
case ACK_DATA_ERROR: e->phy_packet.rcode = RCODE_DATA_ERROR; break;
case ACK_TYPE_ERROR: e->phy_packet.rcode = RCODE_TYPE_ERROR; break;
/* stale generation; cancelled; on certain controllers: no ack */
default: e->phy_packet.rcode = status; break;
}
e->phy_packet.data[0] = packet->timestamp;
queue_event(e->client, &e->event, &e->phy_packet,
sizeof(e->phy_packet) + e->phy_packet.length, NULL, 0);
client_put(e->client);
}
static int ioctl_send_phy_packet(struct client *client, union ioctl_arg *arg)
{
struct fw_cdev_send_phy_packet *a = &arg->send_phy_packet;
struct fw_card *card = client->device->card;
struct outbound_phy_packet_event *e;
/* Access policy: Allow this ioctl only on local nodes' device files. */
if (!client->device->is_local)
return -ENOSYS;
e = kzalloc(sizeof(*e) + 4, GFP_KERNEL);
if (e == NULL)
return -ENOMEM;
client_get(client);
e->client = client;
e->p.speed = SCODE_100;
e->p.generation = a->generation;
e->p.header[0] = a->data[0];
e->p.header[1] = a->data[1];
e->p.header_length = 8;
e->p.callback = outbound_phy_packet_callback;
e->phy_packet.closure = a->closure;
e->phy_packet.type = FW_CDEV_EVENT_PHY_PACKET_SENT;
if (is_ping_packet(a->data))
e->phy_packet.length = 4;
card->driver->send_request(card, &e->p);
return 0;
}
static int ioctl_receive_phy_packets(struct client *client, union ioctl_arg *arg)
{
struct fw_cdev_receive_phy_packets *a = &arg->receive_phy_packets;
struct fw_card *card = client->device->card;
/* Access policy: Allow this ioctl only on local nodes' device files. */
if (!client->device->is_local)
return -ENOSYS;
spin_lock_irq(&card->lock);
list_move_tail(&client->phy_receiver_link, &card->phy_receiver_list);
client->phy_receiver_closure = a->closure;
spin_unlock_irq(&card->lock);
return 0;
}
void fw_cdev_handle_phy_packet(struct fw_card *card, struct fw_packet *p)
{
struct client *client;
struct inbound_phy_packet_event *e;
unsigned long flags;
spin_lock_irqsave(&card->lock, flags);
list_for_each_entry(client, &card->phy_receiver_list, phy_receiver_link) {
e = kmalloc(sizeof(*e) + 8, GFP_ATOMIC);
if (e == NULL) {
fw_notify("Out of memory when allocating event\n");
break;
}
e->phy_packet.closure = client->phy_receiver_closure;
e->phy_packet.type = FW_CDEV_EVENT_PHY_PACKET_RECEIVED;
e->phy_packet.rcode = RCODE_COMPLETE;
e->phy_packet.length = 8;
e->phy_packet.data[0] = p->header[1];
e->phy_packet.data[1] = p->header[2];
queue_event(client, &e->event,
&e->phy_packet, sizeof(e->phy_packet) + 8, NULL, 0);
}
spin_unlock_irqrestore(&card->lock, flags);
}
static int (* const ioctl_handlers[])(struct client *, union ioctl_arg *) = {
ioctl_get_info,
ioctl_send_request,
ioctl_allocate,
ioctl_deallocate,
ioctl_send_response,
ioctl_initiate_bus_reset,
ioctl_add_descriptor,
ioctl_remove_descriptor,
ioctl_create_iso_context,
ioctl_queue_iso,
ioctl_start_iso,
ioctl_stop_iso,
ioctl_get_cycle_timer,
ioctl_allocate_iso_resource,
ioctl_deallocate_iso_resource,
ioctl_allocate_iso_resource_once,
ioctl_deallocate_iso_resource_once,
ioctl_get_speed,
ioctl_send_broadcast_request,
ioctl_send_stream_packet,
ioctl_get_cycle_timer2,
[0x00] = ioctl_get_info,
[0x01] = ioctl_send_request,
[0x02] = ioctl_allocate,
[0x03] = ioctl_deallocate,
[0x04] = ioctl_send_response,
[0x05] = ioctl_initiate_bus_reset,
[0x06] = ioctl_add_descriptor,
[0x07] = ioctl_remove_descriptor,
[0x08] = ioctl_create_iso_context,
[0x09] = ioctl_queue_iso,
[0x0a] = ioctl_start_iso,
[0x0b] = ioctl_stop_iso,
[0x0c] = ioctl_get_cycle_timer,
[0x0d] = ioctl_allocate_iso_resource,
[0x0e] = ioctl_deallocate_iso_resource,
[0x0f] = ioctl_allocate_iso_resource_once,
[0x10] = ioctl_deallocate_iso_resource_once,
[0x11] = ioctl_get_speed,
[0x12] = ioctl_send_broadcast_request,
[0x13] = ioctl_send_stream_packet,
[0x14] = ioctl_get_cycle_timer2,
[0x15] = ioctl_send_phy_packet,
[0x16] = ioctl_receive_phy_packets,
[0x17] = ioctl_set_iso_channels,
};
static int dispatch_ioctl(struct client *client,
@ -1452,6 +1693,10 @@ static int fw_device_op_release(struct inode *inode, struct file *file)
struct client *client = file->private_data;
struct event *event, *next_event;
spin_lock_irq(&client->device->card->lock);
list_del(&client->phy_receiver_link);
spin_unlock_irq(&client->device->card->lock);
mutex_lock(&client->device->client_list_mutex);
list_del(&client->link);
mutex_unlock(&client->device->client_list_mutex);

11
drivers/firewire/core-device.c
View File

@ -107,11 +107,11 @@ static int textual_leaf_to_string(const u32 *block, char *buf, size_t size)
}
/**
* fw_csr_string - reads a string from the configuration ROM
* @directory: e.g. root directory or unit directory
* @key: the key of the preceding directory entry
* @buf: where to put the string
* @size: size of @buf, in bytes
* fw_csr_string() - reads a string from the configuration ROM
* @directory: e.g. root directory or unit directory
* @key: the key of the preceding directory entry
* @buf: where to put the string
* @size: size of @buf, in bytes
*
* The string is taken from a minimal ASCII text descriptor leaf after
* the immediate entry with @key. The string is zero-terminated.
@ -1136,6 +1136,7 @@ static void fw_device_refresh(struct work_struct *work)
goto give_up;
}
fw_device_cdev_update(device);
create_units(device);
/* Userspace may want to re-read attributes. */

34
drivers/firewire/core-iso.c
View File

@ -118,6 +118,23 @@ void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer,
}
EXPORT_SYMBOL(fw_iso_buffer_destroy);
/* Convert DMA address to offset into virtually contiguous buffer. */
size_t fw_iso_buffer_lookup(struct fw_iso_buffer *buffer, dma_addr_t completed)
{
int i;
dma_addr_t address;
ssize_t offset;
for (i = 0; i < buffer->page_count; i++) {
address = page_private(buffer->pages[i]);
offset = (ssize_t)completed - (ssize_t)address;
if (offset > 0 && offset <= PAGE_SIZE)
return (i << PAGE_SHIFT) + offset;
}
return 0;
}
struct fw_iso_context *fw_iso_context_create(struct fw_card *card,
int type, int channel, int speed, size_t header_size,
fw_iso_callback_t callback, void *callback_data)
@ -134,7 +151,7 @@ struct fw_iso_context *fw_iso_context_create(struct fw_card *card,
ctx->channel = channel;
ctx->speed = speed;
ctx->header_size = header_size;
ctx->callback = callback;
ctx->callback.sc = callback;
ctx->callback_data = callback_data;
return ctx;
@ -143,9 +160,7 @@ EXPORT_SYMBOL(fw_iso_context_create);
void fw_iso_context_destroy(struct fw_iso_context *ctx)
{
struct fw_card *card = ctx->card;
card->driver->free_iso_context(ctx);
ctx->card->driver->free_iso_context(ctx);
}
EXPORT_SYMBOL(fw_iso_context_destroy);
@ -156,14 +171,17 @@ int fw_iso_context_start(struct fw_iso_context *ctx,
}
EXPORT_SYMBOL(fw_iso_context_start);
int fw_iso_context_set_channels(struct fw_iso_context *ctx, u64 *channels)
{
return ctx->card->driver->set_iso_channels(ctx, channels);
}
int fw_iso_context_queue(struct fw_iso_context *ctx,
struct fw_iso_packet *packet,
struct fw_iso_buffer *buffer,
unsigned long payload)
{
struct fw_card *card = ctx->card;
return card->driver->queue_iso(ctx, packet, buffer, payload);
return ctx->card->driver->queue_iso(ctx, packet, buffer, payload);
}
EXPORT_SYMBOL(fw_iso_context_queue);
@ -279,7 +297,7 @@ static void deallocate_channel(struct fw_card *card, int irm_id,
}
/**
* fw_iso_resource_manage - Allocate or deallocate a channel and/or bandwidth
* fw_iso_resource_manage() - Allocate or deallocate a channel and/or bandwidth
*
* In parameters: card, generation, channels_mask, bandwidth, allocate
* Out parameters: channel, bandwidth

22
drivers/firewire/core-topology.c
View File

@ -174,12 +174,7 @@ static inline struct fw_node *fw_node(struct list_head *l)
return list_entry(l, struct fw_node, link);
}
/**
* build_tree - Build the tree representation of the topology
* @self_ids: array of self IDs to create the tree from
* @self_id_count: the length of the self_ids array
* @local_id: the node ID of the local node
*
/*
* This function builds the tree representation of the topology given
* by the self IDs from the latest bus reset. During the construction
* of the tree, the function checks that the self IDs are valid and
@ -420,11 +415,10 @@ static void move_tree(struct fw_node *node0, struct fw_node *node1, int port)
}
}
/**
* update_tree - compare the old topology tree for card with the new
* one specified by root. Queue the nodes and mark them as either
* found, lost or updated. Update the nodes in the card topology tree
* as we go.
/*
* Compare the old topology tree for card with the new one specified by root.
* Queue the nodes and mark them as either found, lost or updated.
* Update the nodes in the card topology tree as we go.
*/
static void update_tree(struct fw_card *card, struct fw_node *root)
{
@ -524,7 +518,7 @@ static void update_topology_map(struct fw_card *card,
}
void fw_core_handle_bus_reset(struct fw_card *card, int node_id, int generation,
int self_id_count, u32 *self_ids)
int self_id_count, u32 *self_ids, bool bm_abdicate)
{
struct fw_node *local_node;
unsigned long flags;
@ -543,7 +537,7 @@ void fw_core_handle_bus_reset(struct fw_card *card, int node_id, int generation,
spin_lock_irqsave(&card->lock, flags);
card->broadcast_channel_allocated = false;
card->broadcast_channel_allocated = card->broadcast_channel_auto_allocated;
card->node_id = node_id;
/*
* Update node_id before generation to prevent anybody from using
@ -552,6 +546,8 @@ void fw_core_handle_bus_reset(struct fw_card *card, int node_id, int generation,
smp_wmb();
card->generation = generation;
card->reset_jiffies = jiffies;
card->bm_node_id = 0xffff;
card->bm_abdicate = bm_abdicate;
fw_schedule_bm_work(card, 0);
local_node = build_tree(card, self_ids, self_id_count);

306
drivers/firewire/core-transaction.c
View File

@ -246,7 +246,7 @@ static void fw_fill_request(struct fw_packet *packet, int tcode, int tlabel,
break;
default:
WARN(1, KERN_ERR "wrong tcode %d", tcode);
WARN(1, "wrong tcode %d", tcode);
}
common:
packet->speed = speed;
@ -273,43 +273,52 @@ static int allocate_tlabel(struct fw_card *card)
}
/**
* This function provides low-level access to the IEEE1394 transaction
* logic. Most C programs would use either fw_read(), fw_write() or
* fw_lock() instead - those function are convenience wrappers for
* this function. The fw_send_request() function is primarily
* provided as a flexible, one-stop entry point for languages bindings
* and protocol bindings.
* fw_send_request() - submit a request packet for transmission
* @card: interface to send the request at
* @t: transaction instance to which the request belongs
* @tcode: transaction code
* @destination_id: destination node ID, consisting of bus_ID and phy_ID
* @generation: bus generation in which request and response are valid
* @speed: transmission speed
* @offset: 48bit wide offset into destination's address space
* @payload: data payload for the request subaction
* @length: length of the payload, in bytes
* @callback: function to be called when the transaction is completed
* @callback_data: data to be passed to the transaction completion callback
*
* FIXME: Document this function further, in particular the possible
* values for rcode in the callback. In short, we map ACK_COMPLETE to
* RCODE_COMPLETE, internal errors set errno and set rcode to
* RCODE_SEND_ERROR (which is out of range for standard ieee1394
* rcodes). All other rcodes are forwarded unchanged. For all
* errors, payload is NULL, length is 0.
* Submit a request packet into the asynchronous request transmission queue.
* Can be called from atomic context. If you prefer a blocking API, use
* fw_run_transaction() in a context that can sleep.
*
* Can not expect the callback to be called before the function
* returns, though this does happen in some cases (ACK_COMPLETE and
* errors).
* In case of lock requests, specify one of the firewire-core specific %TCODE_
* constants instead of %TCODE_LOCK_REQUEST in @tcode.
*
* The payload is only used for write requests and must not be freed
* until the callback has been called.
* Make sure that the value in @destination_id is not older than the one in
* @generation. Otherwise the request is in danger to be sent to a wrong node.
*
* @param card the card from which to send the request
* @param tcode the tcode for this transaction. Do not use
* TCODE_LOCK_REQUEST directly, instead use TCODE_LOCK_MASK_SWAP
* etc. to specify tcode and ext_tcode.
* @param node_id the destination node ID (bus ID and PHY ID concatenated)
* @param generation the generation for which node_id is valid
* @param speed the speed to use for sending the request
* @param offset the 48 bit offset on the destination node
* @param payload the data payload for the request subaction
* @param length the length in bytes of the data to read
* @param callback function to be called when the transaction is completed
* @param callback_data pointer to arbitrary data, which will be
* passed to the callback
*
* In case of asynchronous stream packets i.e. TCODE_STREAM_DATA, the caller
* In case of asynchronous stream packets i.e. %TCODE_STREAM_DATA, the caller
* needs to synthesize @destination_id with fw_stream_packet_destination_id().
* It will contain tag, channel, and sy data instead of a node ID then.
*
* The payload buffer at @data is going to be DMA-mapped except in case of
* quadlet-sized payload or of local (loopback) requests. Hence make sure that
* the buffer complies with the restrictions for DMA-mapped memory. The
* @payload must not be freed before the @callback is called.
*
* In case of request types without payload, @data is NULL and @length is 0.
*
* After the transaction is completed successfully or unsuccessfully, the
* @callback will be called. Among its parameters is the response code which
* is either one of the rcodes per IEEE 1394 or, in case of internal errors,
* the firewire-core specific %RCODE_SEND_ERROR. The other firewire-core
* specific rcodes (%RCODE_CANCELLED, %RCODE_BUSY, %RCODE_GENERATION,
* %RCODE_NO_ACK) denote transaction timeout, busy responder, stale request
* generation, or missing ACK respectively.
*
* Note some timing corner cases: fw_send_request() may complete much earlier
* than when the request packet actually hits the wire. On the other hand,
* transaction completion and hence execution of @callback may happen even
* before fw_send_request() returns.
*/
void fw_send_request(struct fw_card *card, struct fw_transaction *t, int tcode,
int destination_id, int generation, int speed,
@ -339,7 +348,8 @@ void fw_send_request(struct fw_card *card, struct fw_transaction *t, int tcode,
setup_timer(&t->split_timeout_timer,
split_transaction_timeout_callback, (unsigned long)t);
/* FIXME: start this timer later, relative to t->timestamp */
mod_timer(&t->split_timeout_timer, jiffies + DIV_ROUND_UP(HZ, 10));
mod_timer(&t->split_timeout_timer,
jiffies + card->split_timeout_jiffies);
t->callback = callback;
t->callback_data = callback_data;
@ -374,9 +384,11 @@ static void transaction_callback(struct fw_card *card, int rcode,
}
/**
* fw_run_transaction - send request and sleep until transaction is completed
* fw_run_transaction() - send request and sleep until transaction is completed
*
* Returns the RCODE.
* Returns the RCODE. See fw_send_request() for parameter documentation.
* Unlike fw_send_request(), @data points to the payload of the request or/and
* to the payload of the response.
*/
int fw_run_transaction(struct fw_card *card, int tcode, int destination_id,
int generation, int speed, unsigned long long offset,
@ -417,9 +429,21 @@ void fw_send_phy_config(struct fw_card *card,
int node_id, int generation, int gap_count)
{
long timeout = DIV_ROUND_UP(HZ, 10);
u32 data = PHY_IDENTIFIER(PHY_PACKET_CONFIG) |
PHY_CONFIG_ROOT_ID(node_id) |
PHY_CONFIG_GAP_COUNT(gap_count);
u32 data = PHY_IDENTIFIER(PHY_PACKET_CONFIG);
if (node_id != FW_PHY_CONFIG_NO_NODE_ID)
data |= PHY_CONFIG_ROOT_ID(node_id);
if (gap_count == FW_PHY_CONFIG_CURRENT_GAP_COUNT) {
gap_count = card->driver->read_phy_reg(card, 1);
if (gap_count < 0)
return;
gap_count &= 63;
if (gap_count == 63)
return;
}
data |= PHY_CONFIG_GAP_COUNT(gap_count);
mutex_lock(&phy_config_mutex);
@ -494,9 +518,9 @@ static bool is_in_fcp_region(u64 offset, size_t length)
}
/**
* fw_core_add_address_handler - register for incoming requests
* @handler: callback
* @region: region in the IEEE 1212 node space address range
* fw_core_add_address_handler() - register for incoming requests
* @handler: callback
* @region: region in the IEEE 1212 node space address range
*
* region->start, ->end, and handler->length have to be quadlet-aligned.
*
@ -519,8 +543,8 @@ int fw_core_add_address_handler(struct fw_address_handler *handler,
int ret = -EBUSY;
if (region->start & 0xffff000000000003ULL ||
region->end & 0xffff000000000003ULL ||
region->start >= region->end ||
region->end > 0x0001000000000000ULL ||
handler->length & 3 ||
handler->length == 0)
return -EINVAL;
@ -551,7 +575,7 @@ int fw_core_add_address_handler(struct fw_address_handler *handler,
EXPORT_SYMBOL(fw_core_add_address_handler);
/**
* fw_core_remove_address_handler - unregister an address handler
* fw_core_remove_address_handler() - unregister an address handler
*/
void fw_core_remove_address_handler(struct fw_address_handler *handler)
{
@ -580,6 +604,41 @@ static void free_response_callback(struct fw_packet *packet,
kfree(request);
}
int fw_get_response_length(struct fw_request *r)
{
int tcode, ext_tcode, data_length;
tcode = HEADER_GET_TCODE(r->request_header[0]);
switch (tcode) {
case TCODE_WRITE_QUADLET_REQUEST:
case TCODE_WRITE_BLOCK_REQUEST:
return 0;
case TCODE_READ_QUADLET_REQUEST:
return 4;
case TCODE_READ_BLOCK_REQUEST:
data_length = HEADER_GET_DATA_LENGTH(r->request_header[3]);
return data_length;
case TCODE_LOCK_REQUEST:
ext_tcode = HEADER_GET_EXTENDED_TCODE(r->request_header[3]);
data_length = HEADER_GET_DATA_LENGTH(r->request_header[3]);
switch (ext_tcode) {
case EXTCODE_FETCH_ADD:
case EXTCODE_LITTLE_ADD:
return data_length;
default:
return data_length / 2;
}
default:
WARN(1, "wrong tcode %d", tcode);
return 0;
}
}
void fw_fill_response(struct fw_packet *response, u32 *request_header,
int rcode, void *payload, size_t length)
{
@ -631,18 +690,35 @@ void fw_fill_response(struct fw_packet *response, u32 *request_header,
break;
default:
WARN(1, KERN_ERR "wrong tcode %d", tcode);
WARN(1, "wrong tcode %d", tcode);
}
response->payload_mapped = false;
}
EXPORT_SYMBOL(fw_fill_response);
static struct fw_request *allocate_request(struct fw_packet *p)
static u32 compute_split_timeout_timestamp(struct fw_card *card,
u32 request_timestamp)
{
unsigned int cycles;
u32 timestamp;
cycles = card->split_timeout_cycles;
cycles += request_timestamp & 0x1fff;
timestamp = request_timestamp & ~0x1fff;
timestamp += (cycles / 8000) << 13;
timestamp |= cycles % 8000;
return timestamp;
}
static struct fw_request *allocate_request(struct fw_card *card,
struct fw_packet *p)
{
struct fw_request *request;
u32 *data, length;
int request_tcode, t;
int request_tcode;
request_tcode = HEADER_GET_TCODE(p->header[0]);
switch (request_tcode) {
@ -677,14 +753,9 @@ static struct fw_request *allocate_request(struct fw_packet *p)
if (request == NULL)
return NULL;
t = (p->timestamp & 0x1fff) + 4000;
if (t >= 8000)
t = (p->timestamp & ~0x1fff) + 0x2000 + t - 8000;
else
t = (p->timestamp & ~0x1fff) + t;
request->response.speed = p->speed;
request->response.timestamp = t;
request->response.timestamp =
compute_split_timeout_timestamp(card, p->timestamp);
request->response.generation = p->generation;
request->response.ack = 0;
request->response.callback = free_response_callback;
@ -713,7 +784,8 @@ void fw_send_response(struct fw_card *card,
if (rcode == RCODE_COMPLETE)
fw_fill_response(&request->response, request->request_header,
rcode, request->data, request->length);
rcode, request->data,
fw_get_response_length(request));
else
fw_fill_response(&request->response, request->request_header,
rcode, NULL, 0);
@ -731,9 +803,11 @@ static void handle_exclusive_region_request(struct fw_card *card,
unsigned long flags;
int tcode, destination, source;
tcode = HEADER_GET_TCODE(p->header[0]);
destination = HEADER_GET_DESTINATION(p->header[0]);
source = HEADER_GET_SOURCE(p->header[1]);
tcode = HEADER_GET_TCODE(p->header[0]);
if (tcode == TCODE_LOCK_REQUEST)
tcode = 0x10 + HEADER_GET_EXTENDED_TCODE(p->header[3]);
spin_lock_irqsave(&address_handler_lock, flags);
handler = lookup_enclosing_address_handler(&address_handler_list,
@ -753,7 +827,7 @@ static void handle_exclusive_region_request(struct fw_card *card,
else
handler->address_callback(card, request,
tcode, destination, source,
p->generation, p->speed, offset,
p->generation, offset,
request->data, request->length,
handler->callback_data);
}
@ -791,8 +865,8 @@ static void handle_fcp_region_request(struct fw_card *card,
if (is_enclosing_handler(handler, offset, request->length))
handler->address_callback(card, NULL, tcode,
destination, source,
p->generation, p->speed,
offset, request->data,
p->generation, offset,
request->data,
request->length,
handler->callback_data);
}
@ -809,7 +883,12 @@ void fw_core_handle_request(struct fw_card *card, struct fw_packet *p)
if (p->ack != ACK_PENDING && p->ack != ACK_COMPLETE)
return;
request = allocate_request(p);
if (TCODE_IS_LINK_INTERNAL(HEADER_GET_TCODE(p->header[0]))) {
fw_cdev_handle_phy_packet(card, p);
return;
}
request = allocate_request(card, p);
if (request == NULL) {
/* FIXME: send statically allocated busy packet. */
return;
@ -832,13 +911,12 @@ void fw_core_handle_response(struct fw_card *card, struct fw_packet *p)
unsigned long flags;
u32 *data;
size_t data_length;
int tcode, tlabel, destination, source, rcode;
int tcode, tlabel, source, rcode;
tcode = HEADER_GET_TCODE(p->header[0]);
tlabel = HEADER_GET_TLABEL(p->header[0]);
destination = HEADER_GET_DESTINATION(p->header[0]);
source = HEADER_GET_SOURCE(p->header[1]);
rcode = HEADER_GET_RCODE(p->header[1]);
tcode = HEADER_GET_TCODE(p->header[0]);
tlabel = HEADER_GET_TLABEL(p->header[0]);
source = HEADER_GET_SOURCE(p->header[1]);
rcode = HEADER_GET_RCODE(p->header[1]);
spin_lock_irqsave(&card->lock, flags);
list_for_each_entry(t, &card->transaction_list, link) {
@ -903,8 +981,8 @@ static const struct fw_address_region topology_map_region =
static void handle_topology_map(struct fw_card *card, struct fw_request *request,
int tcode, int destination, int source, int generation,
int speed, unsigned long long offset,
void *payload, size_t length, void *callback_data)
unsigned long long offset, void *payload, size_t length,
void *callback_data)
{
int start;
@ -933,19 +1011,97 @@ static const struct fw_address_region registers_region =
{ .start = CSR_REGISTER_BASE,
.end = CSR_REGISTER_BASE | CSR_CONFIG_ROM, };
static void update_split_timeout(struct fw_card *card)
{
unsigned int cycles;
cycles = card->split_timeout_hi * 8000 + (card->split_timeout_lo >> 19);
cycles = max(cycles, 800u); /* minimum as per the spec */
cycles = min(cycles, 3u * 8000u); /* maximum OHCI timeout */
card->split_timeout_cycles = cycles;
card->split_timeout_jiffies = DIV_ROUND_UP(cycles * HZ, 8000);
}
static void handle_registers(struct fw_card *card, struct fw_request *request,
int tcode, int destination, int source, int generation,
int speed, unsigned long long offset,
void *payload, size_t length, void *callback_data)
unsigned long long offset, void *payload, size_t length,
void *callback_data)
{
int reg = offset & ~CSR_REGISTER_BASE;
__be32 *data = payload;
int rcode = RCODE_COMPLETE;
unsigned long flags;
switch (reg) {
case CSR_PRIORITY_BUDGET:
if (!card->priority_budget_implemented) {
rcode = RCODE_ADDRESS_ERROR;
break;
}
/* else fall through */
case CSR_NODE_IDS:
/*
* per IEEE 1394-2008 8.3.22.3, not IEEE 1394.1-2004 3.2.8
* and 9.6, but interoperable with IEEE 1394.1-2004 bridges
*/
/* fall through */
case CSR_STATE_CLEAR:
case CSR_STATE_SET:
case CSR_CYCLE_TIME:
if (TCODE_IS_READ_REQUEST(tcode) && length == 4)
*data = cpu_to_be32(card->driver->get_cycle_time(card));
case CSR_BUS_TIME:
case CSR_BUSY_TIMEOUT:
if (tcode == TCODE_READ_QUADLET_REQUEST)
*data = cpu_to_be32(card->driver->read_csr(card, reg));
else if (tcode == TCODE_WRITE_QUADLET_REQUEST)
card->driver->write_csr(card, reg, be32_to_cpu(*data));
else
rcode = RCODE_TYPE_ERROR;
break;
case CSR_RESET_START:
if (tcode == TCODE_WRITE_QUADLET_REQUEST)
card->driver->write_csr(card, CSR_STATE_CLEAR,
CSR_STATE_BIT_ABDICATE);
else
rcode = RCODE_TYPE_ERROR;
break;
case CSR_SPLIT_TIMEOUT_HI:
if (tcode == TCODE_READ_QUADLET_REQUEST) {
*data = cpu_to_be32(card->split_timeout_hi);
} else if (tcode == TCODE_WRITE_QUADLET_REQUEST) {
spin_lock_irqsave(&card->lock, flags);
card->split_timeout_hi = be32_to_cpu(*data) & 7;
update_split_timeout(card);
spin_unlock_irqrestore(&card->lock, flags);
} else {
rcode = RCODE_TYPE_ERROR;
}
break;
case CSR_SPLIT_TIMEOUT_LO:
if (tcode == TCODE_READ_QUADLET_REQUEST) {
*data = cpu_to_be32(card->split_timeout_lo);
} else if (tcode == TCODE_WRITE_QUADLET_REQUEST) {
spin_lock_irqsave(&card->lock, flags);
card->split_timeout_lo =
be32_to_cpu(*data) & 0xfff80000;
update_split_timeout(card);
spin_unlock_irqrestore(&card->lock, flags);
} else {
rcode = RCODE_TYPE_ERROR;
}
break;
case CSR_MAINT_UTILITY:
if (tcode == TCODE_READ_QUADLET_REQUEST)
*data = card->maint_utility_register;
else if (tcode == TCODE_WRITE_QUADLET_REQUEST)
card->maint_utility_register = *data;
else
rcode = RCODE_TYPE_ERROR;
break;
@ -975,12 +1131,6 @@ static void handle_registers(struct fw_card *card, struct fw_request *request,
BUG();
break;
case CSR_BUSY_TIMEOUT:
/* FIXME: Implement this. */
case CSR_BUS_TIME:
/* Useless without initialization by the bus manager. */
default:
rcode = RCODE_ADDRESS_ERROR;
break;

24
drivers/firewire/core.h
View File

@ -38,6 +38,9 @@ struct fw_packet;
#define BROADCAST_CHANNEL_INITIAL (1 << 31 | 31)
#define BROADCAST_CHANNEL_VALID (1 << 30)
#define CSR_STATE_BIT_CMSTR (1 << 8)
#define CSR_STATE_BIT_ABDICATE (1 << 10)
struct fw_card_driver {
/*
* Enable the given card with the given initial config rom.
@ -48,6 +51,7 @@ struct fw_card_driver {
int (*enable)(struct fw_card *card,
const __be32 *config_rom, size_t length);
int (*read_phy_reg)(struct fw_card *card, int address);
int (*update_phy_reg)(struct fw_card *card, int address,
int clear_bits, int set_bits);
@ -75,7 +79,8 @@ struct fw_card_driver {
int (*enable_phys_dma)(struct fw_card *card,
int node_id, int generation);
u32 (*get_cycle_time)(struct fw_card *card);
u32 (*read_csr)(struct fw_card *card, int csr_offset);
void (*write_csr)(struct fw_card *card, int csr_offset, u32 value);
struct fw_iso_context *
(*allocate_iso_context)(struct fw_card *card,
@ -85,6 +90,8 @@ struct fw_card_driver {
int (*start_iso)(struct fw_iso_context *ctx,
s32 cycle, u32 sync, u32 tags);
int (*set_iso_channels)(struct fw_iso_context *ctx, u64 *channels);
int (*queue_iso)(struct fw_iso_context *ctx,
struct fw_iso_packet *packet,
struct fw_iso_buffer *buffer,
@ -98,8 +105,8 @@ void fw_card_initialize(struct fw_card *card,
int fw_card_add(struct fw_card *card,
u32 max_receive, u32 link_speed, u64 guid);
void fw_core_remove_card(struct fw_card *card);
int fw_core_initiate_bus_reset(struct fw_card *card, int short_reset);
int fw_compute_block_crc(__be32 *block);
void fw_schedule_bus_reset(struct fw_card *card, bool delayed, bool short_reset);
void fw_schedule_bm_work(struct fw_card *card, unsigned long delay);
static inline struct fw_card *fw_card_get(struct fw_card *card)
@ -123,6 +130,7 @@ extern const struct file_operations fw_device_ops;
void fw_device_cdev_update(struct fw_device *device);
void fw_device_cdev_remove(struct fw_device *device);
void fw_cdev_handle_phy_packet(struct fw_card *card, struct fw_packet *p);
/* -device */
@ -192,7 +200,7 @@ static inline void fw_node_put(struct fw_node *node)
}
void fw_core_handle_bus_reset(struct fw_card *card, int node_id,
int generation, int self_id_count, u32 *self_ids);
int generation, int self_id_count, u32 *self_ids, bool bm_abdicate);
void fw_destroy_nodes(struct fw_card *card);
/*
@ -209,6 +217,7 @@ static inline bool is_next_generation(int new_generation, int old_generation)
#define TCODE_IS_READ_REQUEST(tcode) (((tcode) & ~1) == 4)
#define TCODE_IS_BLOCK_PACKET(tcode) (((tcode) & 1) != 0)
#define TCODE_IS_LINK_INTERNAL(tcode) ((tcode) == 0xe)
#define TCODE_IS_REQUEST(tcode) (((tcode) & 2) == 0)
#define TCODE_IS_RESPONSE(tcode) (((tcode) & 2) != 0)
#define TCODE_HAS_REQUEST_DATA(tcode) (((tcode) & 12) != 4)
@ -218,9 +227,18 @@ static inline bool is_next_generation(int new_generation, int old_generation)
void fw_core_handle_request(struct fw_card *card, struct fw_packet *request);
void fw_core_handle_response(struct fw_card *card, struct fw_packet *packet);
int fw_get_response_length(struct fw_request *request);
void fw_fill_response(struct fw_packet *response, u32 *request_header,
int rcode, void *payload, size_t length);
#define FW_PHY_CONFIG_NO_NODE_ID -1
#define FW_PHY_CONFIG_CURRENT_GAP_COUNT -1
void fw_send_phy_config(struct fw_card *card,
int node_id, int generation, int gap_count);
static inline bool is_ping_packet(u32 *data)
{
return (data[0] & 0xc0ffffff) == 0 && ~data[0] == data[1];
}
#endif /* _FIREWIRE_CORE_H */

4
drivers/firewire/net.c
View File

@ -806,8 +806,8 @@ static int fwnet_incoming_packet(struct fwnet_device *dev, __be32 *buf, int len,
static void fwnet_receive_packet(struct fw_card *card, struct fw_request *r,
int tcode, int destination, int source, int generation,
int speed, unsigned long long offset, void *payload,
size_t length, void *callback_data)
unsigned long long offset, void *payload, size_t length,
void *callback_data)
{
struct fwnet_device *dev = callback_data;
int rcode;

25
drivers/firewire/nosy-user.h Normal file
View File

@ -0,0 +1,25 @@
#ifndef __nosy_user_h
#define __nosy_user_h
#include <linux/ioctl.h>
#include <linux/types.h>
#define NOSY_IOC_GET_STATS _IOR('&', 0, struct nosy_stats)
#define NOSY_IOC_START _IO('&', 1)
#define NOSY_IOC_STOP _IO('&', 2)
#define NOSY_IOC_FILTER _IOW('&', 2, __u32)
struct nosy_stats {
__u32 total_packet_count;
__u32 lost_packet_count;
};
/*
* Format of packets returned from the kernel driver:
*
* quadlet with timestamp (microseconds, CPU endian)
* quadlet-padded packet data... (little endian)
* quadlet with ack (little endian)
*/
#endif /* __nosy_user_h */

721
drivers/firewire/nosy.c Normal file
View File

@ -0,0 +1,721 @@
/*
* nosy - Snoop mode driver for TI PCILynx 1394 controllers
* Copyright (C) 2002-2007 Kristian Høgsberg
*
* 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/kref.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/poll.h>
#include <linux/sched.h> /* required for linux/wait.h */
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/timex.h>
#include <linux/uaccess.h>
#include <linux/wait.h>
#include <asm/atomic.h>
#include <asm/byteorder.h>
#include "nosy.h"
#include "nosy-user.h"
#define TCODE_PHY_PACKET 0x10
#define PCI_DEVICE_ID_TI_PCILYNX 0x8000
static char driver_name[] = KBUILD_MODNAME;
/* this is the physical layout of a PCL, its size is 128 bytes */
struct pcl {
__le32 next;
__le32 async_error_next;
u32 user_data;
__le32 pcl_status;
__le32 remaining_transfer_count;
__le32 next_data_buffer;
struct {
__le32 control;
__le32 pointer;
} buffer[13];
};
struct packet {
unsigned int length;
char data[0];
};
struct packet_buffer {
char *data;
size_t capacity;
long total_packet_count, lost_packet_count;
atomic_t size;
struct packet *head, *tail;
wait_queue_head_t wait;
};
struct pcilynx {
struct pci_dev *pci_device;
__iomem char *registers;
struct pcl *rcv_start_pcl, *rcv_pcl;
__le32 *rcv_buffer;
dma_addr_t rcv_start_pcl_bus, rcv_pcl_bus, rcv_buffer_bus;
spinlock_t client_list_lock;
struct list_head client_list;
struct miscdevice misc;
struct list_head link;
struct kref kref;
};
static inline struct pcilynx *
lynx_get(struct pcilynx *lynx)
{
kref_get(&lynx->kref);
return lynx;
}
static void
lynx_release(struct kref *kref)
{
kfree(container_of(kref, struct pcilynx, kref));
}
static inline void
lynx_put(struct pcilynx *lynx)
{
kref_put(&lynx->kref, lynx_release);
}
struct client {
struct pcilynx *lynx;
u32 tcode_mask;
struct packet_buffer buffer;
struct list_head link;
};
static DEFINE_MUTEX(card_mutex);
static LIST_HEAD(card_list);
static int
packet_buffer_init(struct packet_buffer *buffer, size_t capacity)
{
buffer->data = kmalloc(capacity, GFP_KERNEL);
if (buffer->data == NULL)
return -ENOMEM;
buffer->head = (struct packet *) buffer->data;
buffer->tail = (struct packet *) buffer->data;
buffer->capacity = capacity;
buffer->lost_packet_count = 0;
atomic_set(&buffer->size, 0);
init_waitqueue_head(&buffer->wait);
return 0;
}
static void
packet_buffer_destroy(struct packet_buffer *buffer)
{
kfree(buffer->data);
}
static int
packet_buffer_get(struct client *client, char __user *data, size_t user_length)
{
struct packet_buffer *buffer = &client->buffer;
size_t length;
char *end;
if (wait_event_interruptible(buffer->wait,
atomic_read(&buffer->size) > 0) ||
list_empty(&client->lynx->link))
return -ERESTARTSYS;
if (atomic_read(&buffer->size) == 0)
return -ENODEV;
/* FIXME: Check length <= user_length. */
end = buffer->data + buffer->capacity;
length = buffer->head->length;
if (&buffer->head->data[length] < end) {
if (copy_to_user(data, buffer->head->data, length))
return -EFAULT;
buffer->head = (struct packet *) &buffer->head->data[length];
} else {
size_t split = end - buffer->head->data;
if (copy_to_user(data, buffer->head->data, split))
return -EFAULT;
if (copy_to_user(data + split, buffer->data, length - split))
return -EFAULT;
buffer->head = (struct packet *) &buffer->data[length - split];
}
/*
* Decrease buffer->size as the last thing, since this is what
* keeps the interrupt from overwriting the packet we are
* retrieving from the buffer.
*/
atomic_sub(sizeof(struct packet) + length, &buffer->size);
return length;
}
static void
packet_buffer_put(struct packet_buffer *buffer, void *data, size_t length)
{
char *end;
buffer->total_packet_count++;
if (buffer->capacity <
atomic_read(&buffer->size) + sizeof(struct packet) + length) {
buffer->lost_packet_count++;
return;
}
end = buffer->data + buffer->capacity;
buffer->tail->length = length;
if (&buffer->tail->data[length] < end) {
memcpy(buffer->tail->data, data, length);
buffer->tail = (struct packet *) &buffer->tail->data[length];
} else {
size_t split = end - buffer->tail->data;
memcpy(buffer->tail->data, data, split);
memcpy(buffer->data, data + split, length - split);
buffer->tail = (struct packet *) &buffer->data[length - split];
}
/* Finally, adjust buffer size and wake up userspace reader. */
atomic_add(sizeof(struct packet) + length, &buffer->size);
wake_up_interruptible(&buffer->wait);
}
static inline void
reg_write(struct pcilynx *lynx, int offset, u32 data)
{
writel(data, lynx->registers + offset);
}
static inline u32
reg_read(struct pcilynx *lynx, int offset)
{
return readl(lynx->registers + offset);
}
static inline void
reg_set_bits(struct pcilynx *lynx, int offset, u32 mask)
{
reg_write(lynx, offset, (reg_read(lynx, offset) | mask));
}
/*
* Maybe the pcl programs could be set up to just append data instead
* of using a whole packet.
*/
static inline void
run_pcl(struct pcilynx *lynx, dma_addr_t pcl_bus,
int dmachan)
{
reg_write(lynx, DMA0_CURRENT_PCL + dmachan * 0x20, pcl_bus);
reg_write(lynx, DMA0_CHAN_CTRL + dmachan * 0x20,
DMA_CHAN_CTRL_ENABLE | DMA_CHAN_CTRL_LINK);
}
static int
set_phy_reg(struct pcilynx *lynx, int addr, int val)
{
if (addr > 15) {
dev_err(&lynx->pci_device->dev,
"PHY register address %d out of range\n", addr);
return -1;
}
if (val > 0xff) {
dev_err(&lynx->pci_device->dev,
"PHY register value %d out of range\n", val);
return -1;
}
reg_write(lynx, LINK_PHY, LINK_PHY_WRITE |
LINK_PHY_ADDR(addr) | LINK_PHY_WDATA(val));
return 0;
}
static int
nosy_open(struct inode *inode, struct file *file)
{
int minor = iminor(inode);
struct client *client;
struct pcilynx *tmp, *lynx = NULL;
mutex_lock(&card_mutex);
list_for_each_entry(tmp, &card_list, link)
if (tmp->misc.minor == minor) {
lynx = lynx_get(tmp);
break;
}
mutex_unlock(&card_mutex);
if (lynx == NULL)
return -ENODEV;
client = kmalloc(sizeof *client, GFP_KERNEL);
if (client == NULL)
goto fail;
client->tcode_mask = ~0;
client->lynx = lynx;
INIT_LIST_HEAD(&client->link);
if (packet_buffer_init(&client->buffer, 128 * 1024) < 0)
goto fail;
file->private_data = client;
return 0;
fail:
kfree(client);
lynx_put(lynx);
return -ENOMEM;
}
static int
nosy_release(struct inode *inode, struct file *file)
{
struct client *client = file->private_data;
struct pcilynx *lynx = client->lynx;
spin_lock_irq(&lynx->client_list_lock);
list_del_init(&client->link);
spin_unlock_irq(&lynx->client_list_lock);
packet_buffer_destroy(&client->buffer);
kfree(client);
lynx_put(lynx);
return 0;
}
static unsigned int
nosy_poll(struct file *file, poll_table *pt)
{
struct client *client = file->private_data;
unsigned int ret = 0;
poll_wait(file, &client->buffer.wait, pt);
if (atomic_read(&client->buffer.size) > 0)
ret = POLLIN | POLLRDNORM;
if (list_empty(&client->lynx->link))
ret |= POLLHUP;
return ret;
}
static ssize_t
nosy_read(struct file *file, char __user *buffer, size_t count, loff_t *offset)
{
struct client *client = file->private_data;
return packet_buffer_get(client, buffer, count);
}
static long
nosy_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct client *client = file->private_data;
spinlock_t *client_list_lock = &client->lynx->client_list_lock;
struct nosy_stats stats;
switch (cmd) {
case NOSY_IOC_GET_STATS:
spin_lock_irq(client_list_lock);
stats.total_packet_count = client->buffer.total_packet_count;
stats.lost_packet_count = client->buffer.lost_packet_count;
spin_unlock_irq(client_list_lock);
if (copy_to_user((void __user *) arg, &stats, sizeof stats))
return -EFAULT;
else
return 0;
case NOSY_IOC_START:
spin_lock_irq(client_list_lock);
list_add_tail(&client->link, &client->lynx->client_list);
spin_unlock_irq(client_list_lock);
return 0;
case NOSY_IOC_STOP:
spin_lock_irq(client_list_lock);
list_del_init(&client->link);
spin_unlock_irq(client_list_lock);
return 0;
case NOSY_IOC_FILTER:
spin_lock_irq(client_list_lock);
client->tcode_mask = arg;
spin_unlock_irq(client_list_lock);
return 0;
default:
return -EINVAL;
/* Flush buffer, configure filter. */
}
}
static const struct file_operations nosy_ops = {
.owner = THIS_MODULE,
.read = nosy_read,
.unlocked_ioctl = nosy_ioctl,
.poll = nosy_poll,
.open = nosy_open,
.release = nosy_release,
};
#define PHY_PACKET_SIZE 12 /* 1 payload, 1 inverse, 1 ack = 3 quadlets */
static void
packet_irq_handler(struct pcilynx *lynx)
{
struct client *client;
u32 tcode_mask, tcode;
size_t length;
struct timeval tv;
/* FIXME: Also report rcv_speed. */
length = __le32_to_cpu(lynx->rcv_pcl->pcl_status) & 0x00001fff;
tcode = __le32_to_cpu(lynx->rcv_buffer[1]) >> 4 & 0xf;
do_gettimeofday(&tv);
lynx->rcv_buffer[0] = (__force __le32)tv.tv_usec;
if (length == PHY_PACKET_SIZE)
tcode_mask = 1 << TCODE_PHY_PACKET;
else
tcode_mask = 1 << tcode;
spin_lock(&lynx->client_list_lock);
list_for_each_entry(client, &lynx->client_list, link)
if (client->tcode_mask & tcode_mask)
packet_buffer_put(&client->buffer,
lynx->rcv_buffer, length + 4);
spin_unlock(&lynx->client_list_lock);
}
static void
bus_reset_irq_handler(struct pcilynx *lynx)
{
struct client *client;
struct timeval tv;
do_gettimeofday(&tv);
spin_lock(&lynx->client_list_lock);
list_for_each_entry(client, &lynx->client_list, link)
packet_buffer_put(&client->buffer, &tv.tv_usec, 4);
spin_unlock(&lynx->client_list_lock);
}
static irqreturn_t
irq_handler(int irq, void *device)
{
struct pcilynx *lynx = device;
u32 pci_int_status;
pci_int_status = reg_read(lynx, PCI_INT_STATUS);
if (pci_int_status == ~0)
/* Card was ejected. */
return IRQ_NONE;
if ((pci_int_status & PCI_INT_INT_PEND) == 0)
/* Not our interrupt, bail out quickly. */
return IRQ_NONE;
if ((pci_int_status & PCI_INT_P1394_INT) != 0) {
u32 link_int_status;
link_int_status = reg_read(lynx, LINK_INT_STATUS);
reg_write(lynx, LINK_INT_STATUS, link_int_status);
if ((link_int_status & LINK_INT_PHY_BUSRESET) > 0)
bus_reset_irq_handler(lynx);
}
/* Clear the PCI_INT_STATUS register only after clearing the
* LINK_INT_STATUS register; otherwise the PCI_INT_P1394 will
* be set again immediately. */
reg_write(lynx, PCI_INT_STATUS, pci_int_status);
if ((pci_int_status & PCI_INT_DMA0_HLT) > 0) {
packet_irq_handler(lynx);
run_pcl(lynx, lynx->rcv_start_pcl_bus, 0);
}
return IRQ_HANDLED;
}
static void
remove_card(struct pci_dev *dev)
{
struct pcilynx *lynx = pci_get_drvdata(dev);
struct client *client;
mutex_lock(&card_mutex);
list_del_init(&lynx->link);
misc_deregister(&lynx->misc);
mutex_unlock(&card_mutex);
reg_write(lynx, PCI_INT_ENABLE, 0);
free_irq(lynx->pci_device->irq, lynx);
spin_lock_irq(&lynx->client_list_lock);
list_for_each_entry(client, &lynx->client_list, link)
wake_up_interruptible(&client->buffer.wait);
spin_unlock_irq(&lynx->client_list_lock);
pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
lynx->rcv_start_pcl, lynx->rcv_start_pcl_bus);
pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
lynx->rcv_pcl, lynx->rcv_pcl_bus);
pci_free_consistent(lynx->pci_device, PAGE_SIZE,
lynx->rcv_buffer, lynx->rcv_buffer_bus);
iounmap(lynx->registers);
pci_disable_device(dev);
lynx_put(lynx);
}
#define RCV_BUFFER_SIZE (16 * 1024)
static int __devinit
add_card(struct pci_dev *dev, const struct pci_device_id *unused)
{
struct pcilynx *lynx;
u32 p, end;
int ret, i;
if (pci_set_dma_mask(dev, 0xffffffff)) {
dev_err(&dev->dev,
"DMA address limits not supported for PCILynx hardware\n");
return -ENXIO;
}
if (pci_enable_device(dev)) {
dev_err(&dev->dev, "Failed to enable PCILynx hardware\n");
return -ENXIO;
}
pci_set_master(dev);
lynx = kzalloc(sizeof *lynx, GFP_KERNEL);
if (lynx == NULL) {
dev_err(&dev->dev, "Failed to allocate control structure\n");
ret = -ENOMEM;
goto fail_disable;
}
lynx->pci_device = dev;
pci_set_drvdata(dev, lynx);
spin_lock_init(&lynx->client_list_lock);
INIT_LIST_HEAD(&lynx->client_list);
kref_init(&lynx->kref);
lynx->registers = ioremap_nocache(pci_resource_start(dev, 0),
PCILYNX_MAX_REGISTER);
lynx->rcv_start_pcl = pci_alloc_consistent(lynx->pci_device,
sizeof(struct pcl), &lynx->rcv_start_pcl_bus);
lynx->rcv_pcl = pci_alloc_consistent(lynx->pci_device,
sizeof(struct pcl), &lynx->rcv_pcl_bus);
lynx->rcv_buffer = pci_alloc_consistent(lynx->pci_device,
RCV_BUFFER_SIZE, &lynx->rcv_buffer_bus);
if (lynx->rcv_start_pcl == NULL ||
lynx->rcv_pcl == NULL ||
lynx->rcv_buffer == NULL) {
dev_err(&dev->dev, "Failed to allocate receive buffer\n");
ret = -ENOMEM;
goto fail_deallocate;
}
lynx->rcv_start_pcl->next = cpu_to_le32(lynx->rcv_pcl_bus);
lynx->rcv_pcl->next = cpu_to_le32(PCL_NEXT_INVALID);
lynx->rcv_pcl->async_error_next = cpu_to_le32(PCL_NEXT_INVALID);
lynx->rcv_pcl->buffer[0].control =
cpu_to_le32(PCL_CMD_RCV | PCL_BIGENDIAN | 2044);
lynx->rcv_pcl->buffer[0].pointer =
cpu_to_le32(lynx->rcv_buffer_bus + 4);
p = lynx->rcv_buffer_bus + 2048;
end = lynx->rcv_buffer_bus + RCV_BUFFER_SIZE;
for (i = 1; p < end; i++, p += 2048) {
lynx->rcv_pcl->buffer[i].control =
cpu_to_le32(PCL_CMD_RCV | PCL_BIGENDIAN | 2048);
lynx->rcv_pcl->buffer[i].pointer = cpu_to_le32(p);
}
lynx->rcv_pcl->buffer[i - 1].control |= cpu_to_le32(PCL_LAST_BUFF);
reg_set_bits(lynx, MISC_CONTROL, MISC_CONTROL_SWRESET);
/* Fix buggy cards with autoboot pin not tied low: */
reg_write(lynx, DMA0_CHAN_CTRL, 0);
reg_write(lynx, DMA_GLOBAL_REGISTER, 0x00 << 24);
#if 0
/* now, looking for PHY register set */
if ((get_phy_reg(lynx, 2) & 0xe0) == 0xe0) {
lynx->phyic.reg_1394a = 1;
PRINT(KERN_INFO, lynx->id,
"found 1394a conform PHY (using extended register set)");
lynx->phyic.vendor = get_phy_vendorid(lynx);
lynx->phyic.product = get_phy_productid(lynx);
} else {
lynx->phyic.reg_1394a = 0;
PRINT(KERN_INFO, lynx->id, "found old 1394 PHY");
}
#endif
/* Setup the general receive FIFO max size. */
reg_write(lynx, FIFO_SIZES, 255);
reg_set_bits(lynx, PCI_INT_ENABLE, PCI_INT_DMA_ALL);
reg_write(lynx, LINK_INT_ENABLE,
LINK_INT_PHY_TIME_OUT | LINK_INT_PHY_REG_RCVD |
LINK_INT_PHY_BUSRESET | LINK_INT_IT_STUCK |
LINK_INT_AT_STUCK | LINK_INT_SNTRJ |
LINK_INT_TC_ERR | LINK_INT_GRF_OVER_FLOW |
LINK_INT_ITF_UNDER_FLOW | LINK_INT_ATF_UNDER_FLOW);
/* Disable the L flag in self ID packets. */
set_phy_reg(lynx, 4, 0);
/* Put this baby into snoop mode */
reg_set_bits(lynx, LINK_CONTROL, LINK_CONTROL_SNOOP_ENABLE);
run_pcl(lynx, lynx->rcv_start_pcl_bus, 0);
if (request_irq(dev->irq, irq_handler, IRQF_SHARED,
driver_name, lynx)) {
dev_err(&dev->dev,
"Failed to allocate shared interrupt %d\n", dev->irq);
ret = -EIO;
goto fail_deallocate;
}
lynx->misc.parent = &dev->dev;
lynx->misc.minor = MISC_DYNAMIC_MINOR;
lynx->misc.name = "nosy";
lynx->misc.fops = &nosy_ops;
mutex_lock(&card_mutex);
ret = misc_register(&lynx->misc);
if (ret) {
dev_err(&dev->dev, "Failed to register misc char device\n");
mutex_unlock(&card_mutex);
goto fail_free_irq;
}
list_add_tail(&lynx->link, &card_list);
mutex_unlock(&card_mutex);
dev_info(&dev->dev,
"Initialized PCILynx IEEE1394 card, irq=%d\n", dev->irq);
return 0;
fail_free_irq:
reg_write(lynx, PCI_INT_ENABLE, 0);
free_irq(lynx->pci_device->irq, lynx);
fail_deallocate:
if (lynx->rcv_start_pcl)
pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
lynx->rcv_start_pcl, lynx->rcv_start_pcl_bus);
if (lynx->rcv_pcl)
pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
lynx->rcv_pcl, lynx->rcv_pcl_bus);
if (lynx->rcv_buffer)
pci_free_consistent(lynx->pci_device, PAGE_SIZE,
lynx->rcv_buffer, lynx->rcv_buffer_bus);
iounmap(lynx->registers);
kfree(lynx);
fail_disable:
pci_disable_device(dev);
return ret;
}
static struct pci_device_id pci_table[] __devinitdata = {
{
.vendor = PCI_VENDOR_ID_TI,
.device = PCI_DEVICE_ID_TI_PCILYNX,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
},
{ } /* Terminating entry */
};
static struct pci_driver lynx_pci_driver = {
.name = driver_name,
.id_table = pci_table,
.probe = add_card,
.remove = remove_card,
};
MODULE_AUTHOR("Kristian Hoegsberg");
MODULE_DESCRIPTION("Snoop mode driver for TI pcilynx 1394 controllers");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, pci_table);
static int __init nosy_init(void)
{
return pci_register_driver(&lynx_pci_driver);
}
static void __exit nosy_cleanup(void)
{
pci_unregister_driver(&lynx_pci_driver);
pr_info("Unloaded %s\n", driver_name);
}
module_init(nosy_init);
module_exit(nosy_cleanup);

237
drivers/firewire/nosy.h Normal file
View File

@ -0,0 +1,237 @@
/*
* Chip register definitions for PCILynx chipset. Based on pcilynx.h
* from the Linux 1394 drivers, but modified a bit so the names here
* match the specification exactly (even though they have weird names,
* like xxx_OVER_FLOW, or arbitrary abbreviations like SNTRJ for "sent
* reject" etc.)
*/
#define PCILYNX_MAX_REGISTER 0xfff
#define PCILYNX_MAX_MEMORY 0xffff
#define PCI_LATENCY_CACHELINE 0x0c
#define MISC_CONTROL 0x40
#define MISC_CONTROL_SWRESET (1<<0)
#define SERIAL_EEPROM_CONTROL 0x44
#define PCI_INT_STATUS 0x48
#define PCI_INT_ENABLE 0x4c
/* status and enable have identical bit numbers */
#define PCI_INT_INT_PEND (1<<31)
#define PCI_INT_FRC_INT (1<<30)
#define PCI_INT_SLV_ADR_PERR (1<<28)
#define PCI_INT_SLV_DAT_PERR (1<<27)
#define PCI_INT_MST_DAT_PERR (1<<26)
#define PCI_INT_MST_DEV_TO (1<<25)
#define PCI_INT_INT_SLV_TO (1<<23)
#define PCI_INT_AUX_TO (1<<18)
#define PCI_INT_AUX_INT (1<<17)
#define PCI_INT_P1394_INT (1<<16)
#define PCI_INT_DMA4_PCL (1<<9)
#define PCI_INT_DMA4_HLT (1<<8)
#define PCI_INT_DMA3_PCL (1<<7)
#define PCI_INT_DMA3_HLT (1<<6)
#define PCI_INT_DMA2_PCL (1<<5)
#define PCI_INT_DMA2_HLT (1<<4)
#define PCI_INT_DMA1_PCL (1<<3)
#define PCI_INT_DMA1_HLT (1<<2)
#define PCI_INT_DMA0_PCL (1<<1)
#define PCI_INT_DMA0_HLT (1<<0)
/* all DMA interrupts combined: */
#define PCI_INT_DMA_ALL 0x3ff
#define PCI_INT_DMA_HLT(chan) (1 << (chan * 2))
#define PCI_INT_DMA_PCL(chan) (1 << (chan * 2 + 1))
#define LBUS_ADDR 0xb4
#define LBUS_ADDR_SEL_RAM (0x0<<16)
#define LBUS_ADDR_SEL_ROM (0x1<<16)
#define LBUS_ADDR_SEL_AUX (0x2<<16)
#define LBUS_ADDR_SEL_ZV (0x3<<16)
#define GPIO_CTRL_A 0xb8
#define GPIO_CTRL_B 0xbc
#define GPIO_DATA_BASE 0xc0
#define DMA_BREG(base, chan) (base + chan * 0x20)
#define DMA_SREG(base, chan) (base + chan * 0x10)
#define PCL_NEXT_INVALID (1<<0)
/* transfer commands */
#define PCL_CMD_RCV (0x1<<24)
#define PCL_CMD_RCV_AND_UPDATE (0xa<<24)
#define PCL_CMD_XMT (0x2<<24)
#define PCL_CMD_UNFXMT (0xc<<24)
#define PCL_CMD_PCI_TO_LBUS (0x8<<24)
#define PCL_CMD_LBUS_TO_PCI (0x9<<24)
/* aux commands */
#define PCL_CMD_NOP (0x0<<24)
#define PCL_CMD_LOAD (0x3<<24)
#define PCL_CMD_STOREQ (0x4<<24)
#define PCL_CMD_STORED (0xb<<24)
#define PCL_CMD_STORE0 (0x5<<24)
#define PCL_CMD_STORE1 (0x6<<24)
#define PCL_CMD_COMPARE (0xe<<24)
#define PCL_CMD_SWAP_COMPARE (0xf<<24)
#define PCL_CMD_ADD (0xd<<24)
#define PCL_CMD_BRANCH (0x7<<24)
/* BRANCH condition codes */
#define PCL_COND_DMARDY_SET (0x1<<20)
#define PCL_COND_DMARDY_CLEAR (0x2<<20)
#define PCL_GEN_INTR (1<<19)
#define PCL_LAST_BUFF (1<<18)
#define PCL_LAST_CMD (PCL_LAST_BUFF)
#define PCL_WAITSTAT (1<<17)
#define PCL_BIGENDIAN (1<<16)
#define PCL_ISOMODE (1<<12)
#define DMA0_PREV_PCL 0x100
#define DMA1_PREV_PCL 0x120
#define DMA2_PREV_PCL 0x140
#define DMA3_PREV_PCL 0x160
#define DMA4_PREV_PCL 0x180
#define DMA_PREV_PCL(chan) (DMA_BREG(DMA0_PREV_PCL, chan))
#define DMA0_CURRENT_PCL 0x104
#define DMA1_CURRENT_PCL 0x124
#define DMA2_CURRENT_PCL 0x144
#define DMA3_CURRENT_PCL 0x164
#define DMA4_CURRENT_PCL 0x184
#define DMA_CURRENT_PCL(chan) (DMA_BREG(DMA0_CURRENT_PCL, chan))
#define DMA0_CHAN_STAT 0x10c
#define DMA1_CHAN_STAT 0x12c
#define DMA2_CHAN_STAT 0x14c
#define DMA3_CHAN_STAT 0x16c
#define DMA4_CHAN_STAT 0x18c
#define DMA_CHAN_STAT(chan) (DMA_BREG(DMA0_CHAN_STAT, chan))
/* CHAN_STATUS registers share bits */
#define DMA_CHAN_STAT_SELFID (1<<31)
#define DMA_CHAN_STAT_ISOPKT (1<<30)
#define DMA_CHAN_STAT_PCIERR (1<<29)
#define DMA_CHAN_STAT_PKTERR (1<<28)
#define DMA_CHAN_STAT_PKTCMPL (1<<27)
#define DMA_CHAN_STAT_SPECIALACK (1<<14)
#define DMA0_CHAN_CTRL 0x110
#define DMA1_CHAN_CTRL 0x130
#define DMA2_CHAN_CTRL 0x150
#define DMA3_CHAN_CTRL 0x170
#define DMA4_CHAN_CTRL 0x190
#define DMA_CHAN_CTRL(chan) (DMA_BREG(DMA0_CHAN_CTRL, chan))
/* CHAN_CTRL registers share bits */
#define DMA_CHAN_CTRL_ENABLE (1<<31)
#define DMA_CHAN_CTRL_BUSY (1<<30)
#define DMA_CHAN_CTRL_LINK (1<<29)
#define DMA0_READY 0x114
#define DMA1_READY 0x134
#define DMA2_READY 0x154
#define DMA3_READY 0x174
#define DMA4_READY 0x194
#define DMA_READY(chan) (DMA_BREG(DMA0_READY, chan))
#define DMA_GLOBAL_REGISTER 0x908
#define FIFO_SIZES 0xa00
#define FIFO_CONTROL 0xa10
#define FIFO_CONTROL_GRF_FLUSH (1<<4)
#define FIFO_CONTROL_ITF_FLUSH (1<<3)
#define FIFO_CONTROL_ATF_FLUSH (1<<2)
#define FIFO_XMIT_THRESHOLD 0xa14
#define DMA0_WORD0_CMP_VALUE 0xb00
#define DMA1_WORD0_CMP_VALUE 0xb10
#define DMA2_WORD0_CMP_VALUE 0xb20
#define DMA3_WORD0_CMP_VALUE 0xb30
#define DMA4_WORD0_CMP_VALUE 0xb40
#define DMA_WORD0_CMP_VALUE(chan) (DMA_SREG(DMA0_WORD0_CMP_VALUE, chan))
#define DMA0_WORD0_CMP_ENABLE 0xb04
#define DMA1_WORD0_CMP_ENABLE 0xb14
#define DMA2_WORD0_CMP_ENABLE 0xb24
#define DMA3_WORD0_CMP_ENABLE 0xb34
#define DMA4_WORD0_CMP_ENABLE 0xb44
#define DMA_WORD0_CMP_ENABLE(chan) (DMA_SREG(DMA0_WORD0_CMP_ENABLE, chan))
#define DMA0_WORD1_CMP_VALUE 0xb08
#define DMA1_WORD1_CMP_VALUE 0xb18
#define DMA2_WORD1_CMP_VALUE 0xb28
#define DMA3_WORD1_CMP_VALUE 0xb38
#define DMA4_WORD1_CMP_VALUE 0xb48
#define DMA_WORD1_CMP_VALUE(chan) (DMA_SREG(DMA0_WORD1_CMP_VALUE, chan))
#define DMA0_WORD1_CMP_ENABLE 0xb0c
#define DMA1_WORD1_CMP_ENABLE 0xb1c
#define DMA2_WORD1_CMP_ENABLE 0xb2c
#define DMA3_WORD1_CMP_ENABLE 0xb3c
#define DMA4_WORD1_CMP_ENABLE 0xb4c
#define DMA_WORD1_CMP_ENABLE(chan) (DMA_SREG(DMA0_WORD1_CMP_ENABLE, chan))
/* word 1 compare enable flags */
#define DMA_WORD1_CMP_MATCH_OTHERBUS (1<<15)
#define DMA_WORD1_CMP_MATCH_BROADCAST (1<<14)
#define DMA_WORD1_CMP_MATCH_BUS_BCAST (1<<13)
#define DMA_WORD1_CMP_MATCH_LOCAL_NODE (1<<12)
#define DMA_WORD1_CMP_MATCH_EXACT (1<<11)
#define DMA_WORD1_CMP_ENABLE_SELF_ID (1<<10)
#define DMA_WORD1_CMP_ENABLE_MASTER (1<<8)
#define LINK_ID 0xf00
#define LINK_ID_BUS(id) (id<<22)
#define LINK_ID_NODE(id) (id<<16)
#define LINK_CONTROL 0xf04
#define LINK_CONTROL_BUSY (1<<29)
#define LINK_CONTROL_TX_ISO_EN (1<<26)
#define LINK_CONTROL_RX_ISO_EN (1<<25)
#define LINK_CONTROL_TX_ASYNC_EN (1<<24)
#define LINK_CONTROL_RX_ASYNC_EN (1<<23)
#define LINK_CONTROL_RESET_TX (1<<21)
#define LINK_CONTROL_RESET_RX (1<<20)
#define LINK_CONTROL_CYCMASTER (1<<11)
#define LINK_CONTROL_CYCSOURCE (1<<10)
#define LINK_CONTROL_CYCTIMEREN (1<<9)
#define LINK_CONTROL_RCV_CMP_VALID (1<<7)
#define LINK_CONTROL_SNOOP_ENABLE (1<<6)
#define CYCLE_TIMER 0xf08
#define LINK_PHY 0xf0c
#define LINK_PHY_READ (1<<31)
#define LINK_PHY_WRITE (1<<30)
#define LINK_PHY_ADDR(addr) (addr<<24)
#define LINK_PHY_WDATA(data) (data<<16)
#define LINK_PHY_RADDR(addr) (addr<<8)
#define LINK_INT_STATUS 0xf14
#define LINK_INT_ENABLE 0xf18
/* status and enable have identical bit numbers */
#define LINK_INT_LINK_INT (1<<31)
#define LINK_INT_PHY_TIME_OUT (1<<30)
#define LINK_INT_PHY_REG_RCVD (1<<29)
#define LINK_INT_PHY_BUSRESET (1<<28)
#define LINK_INT_TX_RDY (1<<26)
#define LINK_INT_RX_DATA_RDY (1<<25)
#define LINK_INT_IT_STUCK (1<<20)
#define LINK_INT_AT_STUCK (1<<19)
#define LINK_INT_SNTRJ (1<<17)
#define LINK_INT_HDR_ERR (1<<16)
#define LINK_INT_TC_ERR (1<<15)
#define LINK_INT_CYC_SEC (1<<11)
#define LINK_INT_CYC_STRT (1<<10)
#define LINK_INT_CYC_DONE (1<<9)
#define LINK_INT_CYC_PEND (1<<8)
#define LINK_INT_CYC_LOST (1<<7)
#define LINK_INT_CYC_ARB_FAILED (1<<6)
#define LINK_INT_GRF_OVER_FLOW (1<<5)
#define LINK_INT_ITF_UNDER_FLOW (1<<4)
#define LINK_INT_ATF_UNDER_FLOW (1<<3)
#define LINK_INT_IARB_FAILED (1<<0)

715
drivers/firewire/ohci.c
View File

File diff suppressed because it is too large Load Diff

1
drivers/firewire/ohci.h
View File

@ -60,6 +60,7 @@
#define OHCI1394_LinkControl_cycleSource (1 << 22)
#define OHCI1394_NodeID 0x0E8
#define OHCI1394_NodeID_idValid 0x80000000
#define OHCI1394_NodeID_root 0x40000000
#define OHCI1394_NodeID_nodeNumber 0x0000003f
#define OHCI1394_NodeID_busNumber 0x0000ffc0
#define OHCI1394_PhyControl 0x0EC

13
drivers/firewire/sbp2.c
View File

@ -410,8 +410,7 @@ static void free_orb(struct kref *kref)
static void sbp2_status_write(struct fw_card *card, struct fw_request *request,
int tcode, int destination, int source,
int generation, int speed,
unsigned long long offset,
int generation, unsigned long long offset,
void *payload, size_t length, void *callback_data)
{
struct sbp2_logical_unit *lu = callback_data;
@ -508,8 +507,7 @@ static void sbp2_send_orb(struct sbp2_orb *orb, struct sbp2_logical_unit *lu,
fw_send_request(device->card, &orb->t, TCODE_WRITE_BLOCK_REQUEST,
node_id, generation, device->max_speed, offset,
&orb->pointer, sizeof(orb->pointer),
complete_transaction, orb);
&orb->pointer, 8, complete_transaction, orb);
}
static int sbp2_cancel_orbs(struct sbp2_logical_unit *lu)
@ -654,7 +652,7 @@ static void sbp2_agent_reset(struct sbp2_logical_unit *lu)
fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST,
lu->tgt->node_id, lu->generation, device->max_speed,
lu->command_block_agent_address + SBP2_AGENT_RESET,
&d, sizeof(d));
&d, 4);
}
static void complete_agent_reset_write_no_wait(struct fw_card *card,
@ -676,7 +674,7 @@ static void sbp2_agent_reset_no_wait(struct sbp2_logical_unit *lu)
fw_send_request(device->card, t, TCODE_WRITE_QUADLET_REQUEST,
lu->tgt->node_id, lu->generation, device->max_speed,
lu->command_block_agent_address + SBP2_AGENT_RESET,
&d, sizeof(d), complete_agent_reset_write_no_wait, t);
&d, 4, complete_agent_reset_write_no_wait, t);
}
static inline void sbp2_allow_block(struct sbp2_logical_unit *lu)
@ -866,8 +864,7 @@ static void sbp2_set_busy_timeout(struct sbp2_logical_unit *lu)
fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST,
lu->tgt->node_id, lu->generation, device->max_speed,
CSR_REGISTER_BASE + CSR_BUSY_TIMEOUT,
&d, sizeof(d));
CSR_REGISTER_BASE + CSR_BUSY_TIMEOUT, &d, 4);
}
static void sbp2_reconnect(struct work_struct *work);

18
drivers/ieee1394/dv1394.c
View File

@ -172,7 +172,7 @@ static DEFINE_SPINLOCK(dv1394_cards_lock);
static inline struct video_card* file_to_video_card(struct file *file)
{
return (struct video_card*) file->private_data;
return file->private_data;
}
/*** FRAME METHODS *********************************************************/
@ -610,7 +610,7 @@ static void frame_prepare(struct video_card *video, unsigned int this_frame)
} else {
u32 transmit_sec, transmit_cyc;
u32 ts_cyc, ts_off;
u32 ts_cyc;
/* DMA is stopped, so this is the very first frame */
video->active_frame = this_frame;
@ -636,7 +636,6 @@ static void frame_prepare(struct video_card *video, unsigned int this_frame)
transmit_sec += transmit_cyc/8000;
transmit_cyc %= 8000;
ts_off = ct_off;
ts_cyc = transmit_cyc + 3;
ts_cyc %= 8000;
@ -1784,7 +1783,7 @@ static int dv1394_open(struct inode *inode, struct file *file)
struct video_card *video = NULL;
if (file->private_data) {
video = (struct video_card*) file->private_data;
video = file->private_data;
} else {
/* look up the card by ID */
@ -2004,7 +2003,7 @@ static void ir_tasklet_func(unsigned long data)
int sof=0; /* start-of-frame flag */
struct frame *f;
u16 packet_length, packet_time;
u16 packet_length;
int i, dbc=0;
struct DMA_descriptor_block *block = NULL;
u16 xferstatus;
@ -2024,11 +2023,6 @@ static void ir_tasklet_func(unsigned long data)
sizeof(struct packet));
packet_length = le16_to_cpu(p->data_length);
packet_time = le16_to_cpu(p->timestamp);
irq_printk("received packet %02d, timestamp=%04x, length=%04x, sof=%02x%02x\n", video->current_packet,
packet_time, packet_length,
p->data[0], p->data[1]);
/* get the descriptor based on packet_buffer cursor */
f = video->frames[video->current_packet / MAX_PACKETS];
@ -2320,7 +2314,6 @@ static void dv1394_add_host(struct hpsb_host *host)
static void dv1394_host_reset(struct hpsb_host *host)
{
struct ti_ohci *ohci;
struct video_card *video = NULL, *tmp_vid;
unsigned long flags;
@ -2328,9 +2321,6 @@ static void dv1394_host_reset(struct hpsb_host *host)
if (strcmp(host->driver->name, OHCI1394_DRIVER_NAME))
return;
ohci = (struct ti_ohci *)host->hostdata;
/* find the corresponding video_cards */
spin_lock_irqsave(&dv1394_cards_lock, flags);
list_for_each_entry(tmp_vid, &dv1394_cards, list) {

3
drivers/ieee1394/eth1394.c
View File

@ -1258,7 +1258,6 @@ static void ether1394_iso(struct hpsb_iso *iso)
char *buf;
struct eth1394_host_info *hi;
struct net_device *dev;
struct eth1394_priv *priv;
unsigned int len;
u32 specifier_id;
u16 source_id;
@ -1288,8 +1287,6 @@ static void ether1394_iso(struct hpsb_iso *iso)
(be32_to_cpu(data[1]) & 0xff000000) >> 24;
source_id = be32_to_cpu(data[0]) >> 16;
priv = netdev_priv(dev);
if (info->channel != (iso->host->csr.broadcast_channel & 0x3f)
|| specifier_id != ETHER1394_GASP_SPECIFIER_ID) {
/* This packet is not for us */

7
drivers/ieee1394/raw1394.c
View File

@ -440,7 +440,7 @@ static struct pending_request *next_complete_req(struct file_info *fi)
static ssize_t raw1394_read(struct file *file, char __user * buffer,
size_t count, loff_t * offset_is_ignored)
{
struct file_info *fi = (struct file_info *)file->private_data;
struct file_info *fi = file->private_data;
struct pending_request *req;
ssize_t ret;
@ -1015,7 +1015,7 @@ static int arm_write(struct hpsb_host *host, int nodeid, int destid,
struct arm_addr *arm_addr = NULL;
struct arm_request *arm_req = NULL;
struct arm_response *arm_resp = NULL;
int found = 0, size = 0, rcode = -1, length_conflict = 0;
int found = 0, size = 0, rcode = -1;
struct arm_request_response *arm_req_resp = NULL;
DBGMSG("arm_write called by node: %X "
@ -1054,7 +1054,6 @@ static int arm_write(struct hpsb_host *host, int nodeid, int destid,
}
if (arm_addr->rec_length < length) {
DBGMSG("arm_write blocklength too big -> rcode_data_error");
length_conflict = 1;
rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */
}
if (rcode == -1) {
@ -2245,7 +2244,7 @@ static int state_connected(struct file_info *fi, struct pending_request *req)
static ssize_t raw1394_write(struct file *file, const char __user * buffer,
size_t count, loff_t * offset_is_ignored)
{
struct file_info *fi = (struct file_info *)file->private_data;
struct file_info *fi = file->private_data;
struct pending_request *req;
ssize_t retval = -EBADFD;

11
drivers/ieee1394/sbp2.c
View File

@ -1350,12 +1350,11 @@ static void sbp2_parse_unit_directory(struct sbp2_lu *lu,
struct csr1212_keyval *kv;
struct csr1212_dentry *dentry;
u64 management_agent_addr;
u32 unit_characteristics, firmware_revision, model;
u32 firmware_revision, model;
unsigned workarounds;
int i;
management_agent_addr = 0;
unit_characteristics = 0;
firmware_revision = SBP2_ROM_VALUE_MISSING;
model = ud->flags & UNIT_DIRECTORY_MODEL_ID ?
ud->model_id : SBP2_ROM_VALUE_MISSING;
@ -1372,17 +1371,15 @@ static void sbp2_parse_unit_directory(struct sbp2_lu *lu,
lu->lun = ORB_SET_LUN(kv->value.immediate);
break;
case SBP2_UNIT_CHARACTERISTICS_KEY:
/* FIXME: This is ignored so far.
* See SBP-2 clause 7.4.8. */
unit_characteristics = kv->value.immediate;
break;
case SBP2_FIRMWARE_REVISION_KEY:
firmware_revision = kv->value.immediate;
break;
default:
/* FIXME: Check for SBP2_UNIT_CHARACTERISTICS_KEY
* mgt_ORB_timeout and ORB_size, SBP-2 clause 7.4.8. */
/* FIXME: Check for SBP2_DEVICE_TYPE_AND_LUN_KEY.
* Its "ordered" bit has consequences for command ORB
* list handling. See SBP-2 clauses 4.6, 7.4.11, 10.2 */

17
drivers/ieee1394/video1394.c
View File

@ -720,7 +720,7 @@ static inline unsigned video1394_buffer_state(struct dma_iso_ctx *d,
static long video1394_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct file_ctx *ctx = (struct file_ctx *)file->private_data;
struct file_ctx *ctx = file->private_data;
struct ti_ohci *ohci = ctx->ohci;
unsigned long flags;
void __user *argp = (void __user *)arg;
@ -1045,14 +1045,9 @@ static long video1394_ioctl(struct file *file,
if (get_user(qv, &p->packet_sizes))
return -EFAULT;
psizes = kmalloc(buf_size, GFP_KERNEL);
if (!psizes)
return -ENOMEM;
if (copy_from_user(psizes, qv, buf_size)) {
kfree(psizes);
return -EFAULT;
}
psizes = memdup_user(qv, buf_size);
if (IS_ERR(psizes))
return PTR_ERR(psizes);
}
spin_lock_irqsave(&d->lock,flags);
@ -1177,7 +1172,7 @@ static long video1394_ioctl(struct file *file,
static int video1394_mmap(struct file *file, struct vm_area_struct *vma)
{
struct file_ctx *ctx = (struct file_ctx *)file->private_data;
struct file_ctx *ctx = file->private_data;
if (ctx->current_ctx == NULL) {
PRINT(KERN_ERR, ctx->ohci->host->id,
@ -1244,7 +1239,7 @@ static int video1394_open(struct inode *inode, struct file *file)
static int video1394_release(struct inode *inode, struct file *file)
{
struct file_ctx *ctx = (struct file_ctx *)file->private_data;
struct file_ctx *ctx = file->private_data;
struct ti_ohci *ohci = ctx->ohci;
struct list_head *lh, *next;
u64 mask;

4
drivers/media/dvb/firewire/firedtv-fw.c
View File

@ -194,8 +194,8 @@ static const struct firedtv_backend backend = {
static void handle_fcp(struct fw_card *card, struct fw_request *request,
int tcode, int destination, int source, int generation,
int speed, unsigned long long offset,
void *payload, size_t length, void *callback_data)
unsigned long long offset, void *payload, size_t length,
void *callback_data)
{
struct firedtv *f, *fdtv = NULL;
struct fw_device *device;

497
include/linux/firewire-cdev.h
View File

@ -30,12 +30,18 @@
#include <linux/types.h>
#include <linux/firewire-constants.h>
#define FW_CDEV_EVENT_BUS_RESET 0x00
#define FW_CDEV_EVENT_RESPONSE 0x01
#define FW_CDEV_EVENT_REQUEST 0x02
#define FW_CDEV_EVENT_ISO_INTERRUPT 0x03
#define FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED 0x04
#define FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED 0x05
#define FW_CDEV_EVENT_BUS_RESET 0x00
#define FW_CDEV_EVENT_RESPONSE 0x01
#define FW_CDEV_EVENT_REQUEST 0x02
#define FW_CDEV_EVENT_ISO_INTERRUPT 0x03
#define FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED 0x04
#define FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED 0x05
/* available since kernel version 2.6.36 */
#define FW_CDEV_EVENT_REQUEST2 0x06
#define FW_CDEV_EVENT_PHY_PACKET_SENT 0x07
#define FW_CDEV_EVENT_PHY_PACKET_RECEIVED 0x08
#define FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL 0x09
/**
* struct fw_cdev_event_common - Common part of all fw_cdev_event_ types
@ -68,6 +74,10 @@ struct fw_cdev_event_common {
* This event is sent when the bus the device belongs to goes through a bus
* reset. It provides information about the new bus configuration, such as
* new node ID for this device, new root ID, and others.
*
* If @bm_node_id is 0xffff right after bus reset it can be reread by an
* %FW_CDEV_IOC_GET_INFO ioctl after bus manager selection was finished.
* Kernels with ABI version < 4 do not set @bm_node_id.
*/
struct fw_cdev_event_bus_reset {
__u64 closure;
@ -82,8 +92,9 @@ struct fw_cdev_event_bus_reset {
/**
* struct fw_cdev_event_response - Sent when a response packet was received
* @closure: See &fw_cdev_event_common;
* set by %FW_CDEV_IOC_SEND_REQUEST ioctl
* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_REQUEST
* or %FW_CDEV_IOC_SEND_BROADCAST_REQUEST
* or %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl
* @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_RESPONSE
* @rcode: Response code returned by the remote node
* @length: Data length, i.e. the response's payload size in bytes
@ -93,6 +104,11 @@ struct fw_cdev_event_bus_reset {
* sent by %FW_CDEV_IOC_SEND_REQUEST ioctl. The payload data for responses
* carrying data (read and lock responses) follows immediately and can be
* accessed through the @data field.
*
* The event is also generated after conclusions of transactions that do not
* involve response packets. This includes unified write transactions,
* broadcast write transactions, and transmission of asynchronous stream
* packets. @rcode indicates success or failure of such transmissions.
*/
struct fw_cdev_event_response {
__u64 closure;
@ -103,11 +119,46 @@ struct fw_cdev_event_response {
};
/**
* struct fw_cdev_event_request - Sent on incoming request to an address region
* struct fw_cdev_event_request - Old version of &fw_cdev_event_request2
* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_ALLOCATE ioctl
* @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_REQUEST
* @tcode: See &fw_cdev_event_request2
* @offset: See &fw_cdev_event_request2
* @handle: See &fw_cdev_event_request2
* @length: See &fw_cdev_event_request2
* @data: See &fw_cdev_event_request2
*
* This event is sent instead of &fw_cdev_event_request2 if the kernel or
* the client implements ABI version <= 3.
*
* Unlike &fw_cdev_event_request2, the sender identity cannot be established,
* broadcast write requests cannot be distinguished from unicast writes, and
* @tcode of lock requests is %TCODE_LOCK_REQUEST.
*
* Requests to the FCP_REQUEST or FCP_RESPONSE register are responded to as
* with &fw_cdev_event_request2, except in kernel 2.6.32 and older which send
* the response packet of the client's %FW_CDEV_IOC_SEND_RESPONSE ioctl.
*/
struct fw_cdev_event_request {
__u64 closure;
__u32 type;
__u32 tcode;
__u64 offset;
__u32 handle;
__u32 length;
__u32 data[0];
};
/**
* struct fw_cdev_event_request2 - Sent on incoming request to an address region
* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_ALLOCATE ioctl
* @type: See &fw_cdev_event_common; always %FW_CDEV_EVENT_REQUEST2
* @tcode: Transaction code of the incoming request
* @offset: The offset into the 48-bit per-node address space
* @source_node_id: Sender node ID
* @destination_node_id: Destination node ID
* @card: The index of the card from which the request came
* @generation: Bus generation in which the request is valid
* @handle: Reference to the kernel-side pending request
* @length: Data length, i.e. the request's payload size in bytes
* @data: Incoming data, if any
@ -120,12 +171,42 @@ struct fw_cdev_event_response {
*
* The payload data for requests carrying data (write and lock requests)
* follows immediately and can be accessed through the @data field.
*
* Unlike &fw_cdev_event_request, @tcode of lock requests is one of the
* firewire-core specific %TCODE_LOCK_MASK_SWAP...%TCODE_LOCK_VENDOR_DEPENDENT,
* i.e. encodes the extended transaction code.
*
* @card may differ from &fw_cdev_get_info.card because requests are received
* from all cards of the Linux host. @source_node_id, @destination_node_id, and
* @generation pertain to that card. Destination node ID and bus generation may
* therefore differ from the corresponding fields of the last
* &fw_cdev_event_bus_reset.
*
* @destination_node_id may also differ from the current node ID because of a
* non-local bus ID part or in case of a broadcast write request. Note, a
* client must call an %FW_CDEV_IOC_SEND_RESPONSE ioctl even in case of a
* broadcast write request; the kernel will then release the kernel-side pending
* request but will not actually send a response packet.
*
* In case of a write request to FCP_REQUEST or FCP_RESPONSE, the kernel already
* sent a write response immediately after the request was received; in this
* case the client must still call an %FW_CDEV_IOC_SEND_RESPONSE ioctl to
* release the kernel-side pending request, though another response won't be
* sent.
*
* If the client subsequently needs to initiate requests to the sender node of
* an &fw_cdev_event_request2, it needs to use a device file with matching
* card index, node ID, and generation for outbound requests.
*/
struct fw_cdev_event_request {
struct fw_cdev_event_request2 {
__u64 closure;
__u32 type;
__u32 tcode;
__u64 offset;
__u32 source_node_id;
__u32 destination_node_id;
__u32 card;
__u32 generation;
__u32 handle;
__u32 length;
__u32 data[0];
@ -141,26 +222,43 @@ struct fw_cdev_event_request {
* @header: Stripped headers, if any
*
* This event is sent when the controller has completed an &fw_cdev_iso_packet
* with the %FW_CDEV_ISO_INTERRUPT bit set. In the receive case, the headers
* stripped of all packets up until and including the interrupt packet are
* returned in the @header field. The amount of header data per packet is as
* specified at iso context creation by &fw_cdev_create_iso_context.header_size.
* with the %FW_CDEV_ISO_INTERRUPT bit set.
*
* In version 1 of this ABI, header data consisted of the 1394 isochronous
* packet header, followed by quadlets from the packet payload if
* &fw_cdev_create_iso_context.header_size > 4.
* Isochronous transmit events (context type %FW_CDEV_ISO_CONTEXT_TRANSMIT):
*
* In version 2 of this ABI, header data consist of the 1394 isochronous
* packet header, followed by a timestamp quadlet if
* &fw_cdev_create_iso_context.header_size > 4, followed by quadlets from the
* packet payload if &fw_cdev_create_iso_context.header_size > 8.
* In version 3 and some implementations of version 2 of the ABI, &header_length
* is a multiple of 4 and &header contains timestamps of all packets up until
* the interrupt packet. The format of the timestamps is as described below for
* isochronous reception. In version 1 of the ABI, &header_length was 0.
*
* Isochronous receive events (context type %FW_CDEV_ISO_CONTEXT_RECEIVE):
*
* The headers stripped of all packets up until and including the interrupt
* packet are returned in the @header field. The amount of header data per
* packet is as specified at iso context creation by
* &fw_cdev_create_iso_context.header_size.
*
* Hence, _interrupt.header_length / _context.header_size is the number of
* packets received in this interrupt event. The client can now iterate
* through the mmap()'ed DMA buffer according to this number of packets and
* to the buffer sizes as the client specified in &fw_cdev_queue_iso.
*
* Since version 2 of this ABI, the portion for each packet in _interrupt.header
* consists of the 1394 isochronous packet header, followed by a timestamp
* quadlet if &fw_cdev_create_iso_context.header_size > 4, followed by quadlets
* from the packet payload if &fw_cdev_create_iso_context.header_size > 8.
*
* Format of 1394 iso packet header: 16 bits data_length, 2 bits tag, 6 bits
* channel, 4 bits tcode, 4 bits sy, in big endian byte order.
* data_length is the actual received size of the packet without the four
* 1394 iso packet header bytes.
*
* Format of timestamp: 16 bits invalid, 3 bits cycleSeconds, 13 bits
* cycleCount, in big endian byte order.
*
* In version 1 of the ABI, no timestamp quadlet was inserted; instead, payload
* data followed directly after the 1394 is header if header_size > 4.
* Behaviour of ver. 1 of this ABI is no longer available since ABI ver. 2.
*
* Format of 1394 iso packet header: 16 bits len, 2 bits tag, 6 bits channel,
* 4 bits tcode, 4 bits sy, in big endian byte order. Format of timestamp:
* 16 bits invalid, 3 bits cycleSeconds, 13 bits cycleCount, in big endian byte
* order.
*/
struct fw_cdev_event_iso_interrupt {
__u64 closure;
@ -170,6 +268,43 @@ struct fw_cdev_event_iso_interrupt {
__u32 header[0];
};
/**
* struct fw_cdev_event_iso_interrupt_mc - An iso buffer chunk was completed
* @closure: See &fw_cdev_event_common;
* set by %FW_CDEV_CREATE_ISO_CONTEXT ioctl
* @type: %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL
* @completed: Offset into the receive buffer; data before this offest is valid
*
* This event is sent in multichannel contexts (context type
* %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL) for &fw_cdev_iso_packet buffer
* chunks that have the %FW_CDEV_ISO_INTERRUPT bit set. Whether this happens
* when a packet is completed and/or when a buffer chunk is completed depends
* on the hardware implementation.
*
* The buffer is continuously filled with the following data, per packet:
* - the 1394 iso packet header as described at &fw_cdev_event_iso_interrupt,
* but in little endian byte order,
* - packet payload (as many bytes as specified in the data_length field of
* the 1394 iso packet header) in big endian byte order,
* - 0...3 padding bytes as needed to align the following trailer quadlet,
* - trailer quadlet, containing the reception timestamp as described at
* &fw_cdev_event_iso_interrupt, but in little endian byte order.
*
* Hence the per-packet size is data_length (rounded up to a multiple of 4) + 8.
* When processing the data, stop before a packet that would cross the
* @completed offset.
*
* A packet near the end of a buffer chunk will typically spill over into the
* next queued buffer chunk. It is the responsibility of the client to check
* for this condition, assemble a broken-up packet from its parts, and not to
* re-queue any buffer chunks in which as yet unread packet parts reside.
*/
struct fw_cdev_event_iso_interrupt_mc {
__u64 closure;
__u32 type;
__u32 completed;
};
/**
* struct fw_cdev_event_iso_resource - Iso resources were allocated or freed
* @closure: See &fw_cdev_event_common;
@ -199,16 +334,46 @@ struct fw_cdev_event_iso_resource {
__s32 bandwidth;
};
/**
* struct fw_cdev_event_phy_packet - A PHY packet was transmitted or received
* @closure: See &fw_cdev_event_common; set by %FW_CDEV_IOC_SEND_PHY_PACKET
* or %FW_CDEV_IOC_RECEIVE_PHY_PACKETS ioctl
* @type: %FW_CDEV_EVENT_PHY_PACKET_SENT or %..._RECEIVED
* @rcode: %RCODE_..., indicates success or failure of transmission
* @length: Data length in bytes
* @data: Incoming data
*
* If @type is %FW_CDEV_EVENT_PHY_PACKET_SENT, @length is 0 and @data empty,
* except in case of a ping packet: Then, @length is 4, and @data[0] is the
* ping time in 49.152MHz clocks if @rcode is %RCODE_COMPLETE.
*
* If @type is %FW_CDEV_EVENT_PHY_PACKET_RECEIVED, @length is 8 and @data
* consists of the two PHY packet quadlets, in host byte order.
*/
struct fw_cdev_event_phy_packet {
__u64 closure;
__u32 type;
__u32 rcode;
__u32 length;
__u32 data[0];
};
/**
* union fw_cdev_event - Convenience union of fw_cdev_event_ types
* @common: Valid for all types
* @bus_reset: Valid if @common.type == %FW_CDEV_EVENT_BUS_RESET
* @response: Valid if @common.type == %FW_CDEV_EVENT_RESPONSE
* @request: Valid if @common.type == %FW_CDEV_EVENT_REQUEST
* @iso_interrupt: Valid if @common.type == %FW_CDEV_EVENT_ISO_INTERRUPT
* @iso_resource: Valid if @common.type ==
* @common: Valid for all types
* @bus_reset: Valid if @common.type == %FW_CDEV_EVENT_BUS_RESET
* @response: Valid if @common.type == %FW_CDEV_EVENT_RESPONSE
* @request: Valid if @common.type == %FW_CDEV_EVENT_REQUEST
* @request2: Valid if @common.type == %FW_CDEV_EVENT_REQUEST2
* @iso_interrupt: Valid if @common.type == %FW_CDEV_EVENT_ISO_INTERRUPT
* @iso_interrupt_mc: Valid if @common.type ==
* %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL
* @iso_resource: Valid if @common.type ==
* %FW_CDEV_EVENT_ISO_RESOURCE_ALLOCATED or
* %FW_CDEV_EVENT_ISO_RESOURCE_DEALLOCATED
* @phy_packet: Valid if @common.type ==
* %FW_CDEV_EVENT_PHY_PACKET_SENT or
* %FW_CDEV_EVENT_PHY_PACKET_RECEIVED
*
* Convenience union for userspace use. Events could be read(2) into an
* appropriately aligned char buffer and then cast to this union for further
@ -223,8 +388,11 @@ union fw_cdev_event {
struct fw_cdev_event_bus_reset bus_reset;
struct fw_cdev_event_response response;
struct fw_cdev_event_request request;
struct fw_cdev_event_request2 request2; /* added in 2.6.36 */
struct fw_cdev_event_iso_interrupt iso_interrupt;
struct fw_cdev_event_iso_resource iso_resource;
struct fw_cdev_event_iso_interrupt_mc iso_interrupt_mc; /* added in 2.6.36 */
struct fw_cdev_event_iso_resource iso_resource; /* added in 2.6.30 */
struct fw_cdev_event_phy_packet phy_packet; /* added in 2.6.36 */
};
/* available since kernel version 2.6.22 */
@ -256,23 +424,46 @@ union fw_cdev_event {
/* available since kernel version 2.6.34 */
#define FW_CDEV_IOC_GET_CYCLE_TIMER2 _IOWR('#', 0x14, struct fw_cdev_get_cycle_timer2)
/* available since kernel version 2.6.36 */
#define FW_CDEV_IOC_SEND_PHY_PACKET _IOWR('#', 0x15, struct fw_cdev_send_phy_packet)
#define FW_CDEV_IOC_RECEIVE_PHY_PACKETS _IOW('#', 0x16, struct fw_cdev_receive_phy_packets)
#define FW_CDEV_IOC_SET_ISO_CHANNELS _IOW('#', 0x17, struct fw_cdev_set_iso_channels)
/*
* FW_CDEV_VERSION History
* ABI version history
* 1 (2.6.22) - initial version
* (2.6.24) - added %FW_CDEV_IOC_GET_CYCLE_TIMER
* 2 (2.6.30) - changed &fw_cdev_event_iso_interrupt.header if
* &fw_cdev_create_iso_context.header_size is 8 or more
* - added %FW_CDEV_IOC_*_ISO_RESOURCE*,
* %FW_CDEV_IOC_GET_SPEED, %FW_CDEV_IOC_SEND_BROADCAST_REQUEST,
* %FW_CDEV_IOC_SEND_STREAM_PACKET
* (2.6.32) - added time stamp to xmit &fw_cdev_event_iso_interrupt
* (2.6.33) - IR has always packet-per-buffer semantics now, not one of
* dual-buffer or packet-per-buffer depending on hardware
* - shared use and auto-response for FCP registers
* 3 (2.6.34) - made &fw_cdev_get_cycle_timer reliable
* - added %FW_CDEV_IOC_GET_CYCLE_TIMER2
* 4 (2.6.36) - added %FW_CDEV_EVENT_REQUEST2, %FW_CDEV_EVENT_PHY_PACKET_*,
* and &fw_cdev_allocate.region_end
* - implemented &fw_cdev_event_bus_reset.bm_node_id
* - added %FW_CDEV_IOC_SEND_PHY_PACKET, _RECEIVE_PHY_PACKETS
* - added %FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL,
* %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL, and
* %FW_CDEV_IOC_SET_ISO_CHANNELS
*/
#define FW_CDEV_VERSION 3
#define FW_CDEV_VERSION 3 /* Meaningless; don't use this macro. */
/**
* struct fw_cdev_get_info - General purpose information ioctl
* @version: The version field is just a running serial number.
* We never break backwards compatibility, but may add more
* structs and ioctls in later revisions.
* @version: The version field is just a running serial number. Both an
* input parameter (ABI version implemented by the client) and
* output parameter (ABI version implemented by the kernel).
* A client must not fill in an %FW_CDEV_VERSION defined from an
* included kernel header file but the actual version for which
* the client was implemented. This is necessary for forward
* compatibility. We never break backwards compatibility, but
* may add more structs, events, and ioctls in later revisions.
* @rom_length: If @rom is non-zero, at most rom_length bytes of configuration
* ROM will be copied into that user space address. In either
* case, @rom_length is updated with the actual length of the
@ -339,28 +530,48 @@ struct fw_cdev_send_response {
};
/**
* struct fw_cdev_allocate - Allocate a CSR address range
* struct fw_cdev_allocate - Allocate a CSR in an address range
* @offset: Start offset of the address range
* @closure: To be passed back to userspace in request events
* @length: Length of the address range, in bytes
* @length: Length of the CSR, in bytes
* @handle: Handle to the allocation, written by the kernel
* @region_end: First address above the address range (added in ABI v4, 2.6.36)
*
* Allocate an address range in the 48-bit address space on the local node
* (the controller). This allows userspace to listen for requests with an
* offset within that address range. When the kernel receives a request
* within the range, an &fw_cdev_event_request event will be written back.
* The @closure field is passed back to userspace in the response event.
* offset within that address range. Every time when the kernel receives a
* request within the range, an &fw_cdev_event_request2 event will be emitted.
* (If the kernel or the client implements ABI version <= 3, an
* &fw_cdev_event_request will be generated instead.)
*
* The @closure field is passed back to userspace in these request events.
* The @handle field is an out parameter, returning a handle to the allocated
* range to be used for later deallocation of the range.
*
* The address range is allocated on all local nodes. The address allocation
* is exclusive except for the FCP command and response registers.
* is exclusive except for the FCP command and response registers. If an
* exclusive address region is already in use, the ioctl fails with errno set
* to %EBUSY.
*
* If kernel and client implement ABI version >= 4, the kernel looks up a free
* spot of size @length inside [@offset..@region_end) and, if found, writes
* the start address of the new CSR back in @offset. I.e. @offset is an
* in and out parameter. If this automatic placement of a CSR in a bigger
* address range is not desired, the client simply needs to set @region_end
* = @offset + @length.
*
* If the kernel or the client implements ABI version <= 3, @region_end is
* ignored and effectively assumed to be @offset + @length.
*
* @region_end is only present in a kernel header >= 2.6.36. If necessary,
* this can for example be tested by #ifdef FW_CDEV_EVENT_REQUEST2.
*/
struct fw_cdev_allocate {
__u64 offset;
__u64 closure;
__u32 length;
__u32 handle;
__u64 region_end; /* available since kernel version 2.6.36 */
};
/**
@ -382,9 +593,14 @@ struct fw_cdev_deallocate {
* Initiate a bus reset for the bus this device is on. The bus reset can be
* either the original (long) bus reset or the arbitrated (short) bus reset
* introduced in 1394a-2000.
*
* The ioctl returns immediately. A subsequent &fw_cdev_event_bus_reset
* indicates when the reset actually happened. Since ABI v4, this may be
* considerably later than the ioctl because the kernel ensures a grace period
* between subsequent bus resets as per IEEE 1394 bus management specification.
*/
struct fw_cdev_initiate_bus_reset {
__u32 type; /* FW_CDEV_SHORT_RESET or FW_CDEV_LONG_RESET */
__u32 type;
};
/**
@ -408,9 +624,10 @@ struct fw_cdev_initiate_bus_reset {
*
* @immediate, @key, and @data array elements are CPU-endian quadlets.
*
* If successful, the kernel adds the descriptor and writes back a handle to the
* kernel-side object to be used for later removal of the descriptor block and
* immediate key.
* If successful, the kernel adds the descriptor and writes back a @handle to
* the kernel-side object to be used for later removal of the descriptor block
* and immediate key. The kernel will also generate a bus reset to signal the
* change of the configuration ROM to other nodes.
*
* This ioctl affects the configuration ROMs of all local nodes.
* The ioctl only succeeds on device files which represent a local node.
@ -429,38 +646,50 @@ struct fw_cdev_add_descriptor {
* descriptor was added
*
* Remove a descriptor block and accompanying immediate key from the local
* nodes' configuration ROMs.
* nodes' configuration ROMs. The kernel will also generate a bus reset to
* signal the change of the configuration ROM to other nodes.
*/
struct fw_cdev_remove_descriptor {
__u32 handle;
};
#define FW_CDEV_ISO_CONTEXT_TRANSMIT 0
#define FW_CDEV_ISO_CONTEXT_RECEIVE 1
#define FW_CDEV_ISO_CONTEXT_TRANSMIT 0
#define FW_CDEV_ISO_CONTEXT_RECEIVE 1
#define FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL 2 /* added in 2.6.36 */
/**
* struct fw_cdev_create_iso_context - Create a context for isochronous IO
* @type: %FW_CDEV_ISO_CONTEXT_TRANSMIT or %FW_CDEV_ISO_CONTEXT_RECEIVE
* @header_size: Header size to strip for receive contexts
* @channel: Channel to bind to
* @speed: Speed for transmit contexts
* @closure: To be returned in &fw_cdev_event_iso_interrupt
* struct fw_cdev_create_iso_context - Create a context for isochronous I/O
* @type: %FW_CDEV_ISO_CONTEXT_TRANSMIT or %FW_CDEV_ISO_CONTEXT_RECEIVE or
* %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL
* @header_size: Header size to strip in single-channel reception
* @channel: Channel to bind to in single-channel reception or transmission
* @speed: Transmission speed
* @closure: To be returned in &fw_cdev_event_iso_interrupt or
* &fw_cdev_event_iso_interrupt_multichannel
* @handle: Handle to context, written back by kernel
*
* Prior to sending or receiving isochronous I/O, a context must be created.
* The context records information about the transmit or receive configuration
* and typically maps to an underlying hardware resource. A context is set up
* for either sending or receiving. It is bound to a specific isochronous
* channel.
* @channel.
*
* In case of multichannel reception, @header_size and @channel are ignored
* and the channels are selected by %FW_CDEV_IOC_SET_ISO_CHANNELS.
*
* For %FW_CDEV_ISO_CONTEXT_RECEIVE contexts, @header_size must be at least 4
* and must be a multiple of 4. It is ignored in other context types.
*
* @speed is ignored in receive context types.
*
* If a context was successfully created, the kernel writes back a handle to the
* context, which must be passed in for subsequent operations on that context.
*
* For receive contexts, @header_size must be at least 4 and must be a multiple
* of 4.
*
* Note that the effect of a @header_size > 4 depends on
* &fw_cdev_get_info.version, as documented at &fw_cdev_event_iso_interrupt.
* Limitations:
* No more than one iso context can be created per fd.
* The total number of contexts that all userspace and kernelspace drivers can
* create on a card at a time is a hardware limit, typically 4 or 8 contexts per
* direction, and of them at most one multichannel receive context.
*/
struct fw_cdev_create_iso_context {
__u32 type;
@ -471,6 +700,22 @@ struct fw_cdev_create_iso_context {
__u32 handle;
};
/**
* struct fw_cdev_set_iso_channels - Select channels in multichannel reception
* @channels: Bitmask of channels to listen to
* @handle: Handle of the mutichannel receive context
*
* @channels is the bitwise or of 1ULL << n for each channel n to listen to.
*
* The ioctl fails with errno %EBUSY if there is already another receive context
* on a channel in @channels. In that case, the bitmask of all unoccupied
* channels is returned in @channels.
*/
struct fw_cdev_set_iso_channels {
__u64 channels;
__u32 handle;
};
#define FW_CDEV_ISO_PAYLOAD_LENGTH(v) (v)
#define FW_CDEV_ISO_INTERRUPT (1 << 16)
#define FW_CDEV_ISO_SKIP (1 << 17)
@ -481,42 +726,72 @@ struct fw_cdev_create_iso_context {
/**
* struct fw_cdev_iso_packet - Isochronous packet
* @control: Contains the header length (8 uppermost bits), the sy field
* (4 bits), the tag field (2 bits), a sync flag (1 bit),
* a skip flag (1 bit), an interrupt flag (1 bit), and the
* @control: Contains the header length (8 uppermost bits),
* the sy field (4 bits), the tag field (2 bits), a sync flag
* or a skip flag (1 bit), an interrupt flag (1 bit), and the
* payload length (16 lowermost bits)
* @header: Header and payload
* @header: Header and payload in case of a transmit context.
*
* &struct fw_cdev_iso_packet is used to describe isochronous packet queues.
*
* Use the FW_CDEV_ISO_ macros to fill in @control.
* The @header array is empty in case of receive contexts.
*
* For transmit packets, the header length must be a multiple of 4 and specifies
* the numbers of bytes in @header that will be prepended to the packet's
* payload; these bytes are copied into the kernel and will not be accessed
* after the ioctl has returned. The sy and tag fields are copied to the iso
* packet header (these fields are specified by IEEE 1394a and IEC 61883-1).
* The skip flag specifies that no packet is to be sent in a frame; when using
* this, all other fields except the interrupt flag must be zero.
* Context type %FW_CDEV_ISO_CONTEXT_TRANSMIT:
*
* For receive packets, the header length must be a multiple of the context's
* header size; if the header length is larger than the context's header size,
* multiple packets are queued for this entry. The sy and tag fields are
* ignored. If the sync flag is set, the context drops all packets until
* a packet with a matching sy field is received (the sync value to wait for is
* specified in the &fw_cdev_start_iso structure). The payload length defines
* how many payload bytes can be received for one packet (in addition to payload
* quadlets that have been defined as headers and are stripped and returned in
* the &fw_cdev_event_iso_interrupt structure). If more bytes are received, the
* additional bytes are dropped. If less bytes are received, the remaining
* bytes in this part of the payload buffer will not be written to, not even by
* the next packet, i.e., packets received in consecutive frames will not
* necessarily be consecutive in memory. If an entry has queued multiple
* packets, the payload length is divided equally among them.
* @control.HEADER_LENGTH must be a multiple of 4. It specifies the numbers of
* bytes in @header that will be prepended to the packet's payload. These bytes
* are copied into the kernel and will not be accessed after the ioctl has
* returned.
*
* When a packet with the interrupt flag set has been completed, the
* The @control.SY and TAG fields are copied to the iso packet header. These
* fields are specified by IEEE 1394a and IEC 61883-1.
*
* The @control.SKIP flag specifies that no packet is to be sent in a frame.
* When using this, all other fields except @control.INTERRUPT must be zero.
*
* When a packet with the @control.INTERRUPT flag set has been completed, an
* &fw_cdev_event_iso_interrupt event will be sent.
*
* Context type %FW_CDEV_ISO_CONTEXT_RECEIVE:
*
* @control.HEADER_LENGTH must be a multiple of the context's header_size.
* If the HEADER_LENGTH is larger than the context's header_size, multiple
* packets are queued for this entry.
*
* The @control.SY and TAG fields are ignored.
*
* If the @control.SYNC flag is set, the context drops all packets until a
* packet with a sy field is received which matches &fw_cdev_start_iso.sync.
*
* @control.PAYLOAD_LENGTH defines how many payload bytes can be received for
* one packet (in addition to payload quadlets that have been defined as headers
* and are stripped and returned in the &fw_cdev_event_iso_interrupt structure).
* If more bytes are received, the additional bytes are dropped. If less bytes
* are received, the remaining bytes in this part of the payload buffer will not
* be written to, not even by the next packet. I.e., packets received in
* consecutive frames will not necessarily be consecutive in memory. If an
* entry has queued multiple packets, the PAYLOAD_LENGTH is divided equally
* among them.
*
* When a packet with the @control.INTERRUPT flag set has been completed, an
* &fw_cdev_event_iso_interrupt event will be sent. An entry that has queued
* multiple receive packets is completed when its last packet is completed.
*
* Context type %FW_CDEV_ISO_CONTEXT_RECEIVE_MULTICHANNEL:
*
* Here, &fw_cdev_iso_packet would be more aptly named _iso_buffer_chunk since
* it specifies a chunk of the mmap()'ed buffer, while the number and alignment
* of packets to be placed into the buffer chunk is not known beforehand.
*
* @control.PAYLOAD_LENGTH is the size of the buffer chunk and specifies room
* for header, payload, padding, and trailer bytes of one or more packets.
* It must be a multiple of 4.
*
* @control.HEADER_LENGTH, TAG and SY are ignored. SYNC is treated as described
* for single-channel reception.
*
* When a buffer chunk with the @control.INTERRUPT flag set has been filled
* entirely, an &fw_cdev_event_iso_interrupt_mc event will be sent.
*/
struct fw_cdev_iso_packet {
__u32 control;
@ -525,9 +800,9 @@ struct fw_cdev_iso_packet {
/**
* struct fw_cdev_queue_iso - Queue isochronous packets for I/O
* @packets: Userspace pointer to packet data
* @packets: Userspace pointer to an array of &fw_cdev_iso_packet
* @data: Pointer into mmap()'ed payload buffer
* @size: Size of packet data in bytes
* @size: Size of the @packets array, in bytes
* @handle: Isochronous context handle
*
* Queue a number of isochronous packets for reception or transmission.
@ -540,6 +815,9 @@ struct fw_cdev_iso_packet {
* The kernel may or may not queue all packets, but will write back updated
* values of the @packets, @data and @size fields, so the ioctl can be
* resubmitted easily.
*
* In case of a multichannel receive context, @data must be quadlet-aligned
* relative to the buffer start.
*/
struct fw_cdev_queue_iso {
__u64 packets;
@ -698,4 +976,39 @@ struct fw_cdev_send_stream_packet {
__u32 speed;
};
/**
* struct fw_cdev_send_phy_packet - send a PHY packet
* @closure: Passed back to userspace in the PHY-packet-sent event
* @data: First and second quadlet of the PHY packet
* @generation: The bus generation where packet is valid
*
* The %FW_CDEV_IOC_SEND_PHY_PACKET ioctl sends a PHY packet to all nodes
* on the same card as this device. After transmission, an
* %FW_CDEV_EVENT_PHY_PACKET_SENT event is generated.
*
* The payload @data[] shall be specified in host byte order. Usually,
* @data[1] needs to be the bitwise inverse of @data[0]. VersaPHY packets
* are an exception to this rule.
*
* The ioctl is only permitted on device files which represent a local node.
*/
struct fw_cdev_send_phy_packet {
__u64 closure;
__u32 data[2];
__u32 generation;
};
/**
* struct fw_cdev_receive_phy_packets - start reception of PHY packets
* @closure: Passed back to userspace in phy packet events
*
* This ioctl activates issuing of %FW_CDEV_EVENT_PHY_PACKET_RECEIVED due to
* incoming PHY packets from any node on the same bus as the device.
*
* The ioctl is only permitted on device files which represent a local node.
*/
struct fw_cdev_receive_phy_packets {
__u64 closure;
};
#endif /* _LINUX_FIREWIRE_CDEV_H */

62
include/linux/firewire.h
View File

@ -32,11 +32,13 @@
#define CSR_CYCLE_TIME 0x200
#define CSR_BUS_TIME 0x204
#define CSR_BUSY_TIMEOUT 0x210
#define CSR_PRIORITY_BUDGET 0x218
#define CSR_BUS_MANAGER_ID 0x21c
#define CSR_BANDWIDTH_AVAILABLE 0x220
#define CSR_CHANNELS_AVAILABLE 0x224
#define CSR_CHANNELS_AVAILABLE_HI 0x224
#define CSR_CHANNELS_AVAILABLE_LO 0x228
#define CSR_MAINT_UTILITY 0x230
#define CSR_BROADCAST_CHANNEL 0x234
#define CSR_CONFIG_ROM 0x400
#define CSR_CONFIG_ROM_END 0x800
@ -89,6 +91,11 @@ struct fw_card {
struct list_head transaction_list;
unsigned long reset_jiffies;
u32 split_timeout_hi;
u32 split_timeout_lo;
unsigned int split_timeout_cycles;
unsigned int split_timeout_jiffies;
unsigned long long guid;
unsigned max_receive;
int link_speed;
@ -104,18 +111,28 @@ struct fw_card {
bool beta_repeaters_present;
int index;
struct list_head link;
/* Work struct for BM duties. */
struct delayed_work work;
struct list_head phy_receiver_list;
struct delayed_work br_work; /* bus reset job */
bool br_short;
struct delayed_work bm_work; /* bus manager job */
int bm_retries;
int bm_generation;
__be32 bm_transaction_data[2];
int bm_node_id;
bool bm_abdicate;
bool priority_budget_implemented; /* controller feature */
bool broadcast_channel_auto_allocated; /* controller feature */
bool broadcast_channel_allocated;
u32 broadcast_channel;
__be32 topology_map[(CSR_TOPOLOGY_MAP_END - CSR_TOPOLOGY_MAP) / 4];
__be32 maint_utility_register;
};
struct fw_attribute_group {
@ -252,7 +269,7 @@ typedef void (*fw_transaction_callback_t)(struct fw_card *card, int rcode,
typedef void (*fw_address_callback_t)(struct fw_card *card,
struct fw_request *request,
int tcode, int destination, int source,
int generation, int speed,
int generation,
unsigned long long offset,
void *data, size_t length,
void *callback_data);
@ -269,10 +286,10 @@ struct fw_packet {
u32 timestamp;
/*
* 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.
* 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 is one of the juju-specific
* rcodes: RCODE_SEND_ERROR, _CANCELLED, _BUSY, _GENERATION, _NO_ACK.
* The callback can be called from tasklet context and thus
* must never block.
*/
@ -355,17 +372,19 @@ void fw_core_remove_descriptor(struct fw_descriptor *desc);
* scatter-gather streaming (e.g. assembling video frame automatically).
*/
struct fw_iso_packet {
u16 payload_length; /* Length of indirect payload. */
u32 interrupt:1; /* Generate interrupt on this packet */
u32 skip:1; /* Set to not send packet at all. */
u32 tag:2;
u32 sy:4;
u32 header_length:8; /* Length of immediate header. */
u32 header[0];
u16 payload_length; /* Length of indirect payload */
u32 interrupt:1; /* Generate interrupt on this packet */
u32 skip:1; /* tx: Set to not send packet at all */
/* rx: Sync bit, wait for matching sy */
u32 tag:2; /* tx: Tag in packet header */
u32 sy:4; /* tx: Sy in packet header */
u32 header_length:8; /* Length of immediate header */
u32 header[0]; /* tx: Top of 1394 isoch. data_block */
};
#define FW_ISO_CONTEXT_TRANSMIT 0
#define FW_ISO_CONTEXT_RECEIVE 1
#define FW_ISO_CONTEXT_TRANSMIT 0
#define FW_ISO_CONTEXT_RECEIVE 1
#define FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL 2
#define FW_ISO_CONTEXT_MATCH_TAG0 1
#define FW_ISO_CONTEXT_MATCH_TAG1 2
@ -389,24 +408,31 @@ struct fw_iso_buffer {
int fw_iso_buffer_init(struct fw_iso_buffer *buffer, struct fw_card *card,
int page_count, enum dma_data_direction direction);
void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer, struct fw_card *card);
size_t fw_iso_buffer_lookup(struct fw_iso_buffer *buffer, dma_addr_t completed);
struct fw_iso_context;
typedef void (*fw_iso_callback_t)(struct fw_iso_context *context,
u32 cycle, size_t header_length,
void *header, void *data);
typedef void (*fw_iso_mc_callback_t)(struct fw_iso_context *context,
dma_addr_t completed, void *data);
struct fw_iso_context {
struct fw_card *card;
int type;
int channel;
int speed;
size_t header_size;
fw_iso_callback_t callback;
union {
fw_iso_callback_t sc;
fw_iso_mc_callback_t mc;
} callback;
void *callback_data;
};
struct fw_iso_context *fw_iso_context_create(struct fw_card *card,
int type, int channel, int speed, size_t header_size,
fw_iso_callback_t callback, void *callback_data);
int fw_iso_context_set_channels(struct fw_iso_context *ctx, u64 *channels);
int fw_iso_context_queue(struct fw_iso_context *ctx,
struct fw_iso_packet *packet,
struct fw_iso_buffer *buffer,

19
tools/firewire/Makefile Normal file
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@ -0,0 +1,19 @@
prefix = /usr
nosy-dump-version = 0.4
CC = gcc
all : nosy-dump
nosy-dump : CFLAGS = -Wall -O2 -g
nosy-dump : CPPFLAGS = -DVERSION=\"$(nosy-dump-version)\" -I../../drivers/firewire
nosy-dump : LDFLAGS = -g
nosy-dump : LDLIBS = -lpopt
nosy-dump : nosy-dump.o decode-fcp.o
clean :
rm -rf *.o nosy-dump
install :
install nosy-dump $(prefix)/bin/nosy-dump

213
tools/firewire/decode-fcp.c Normal file
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@ -0,0 +1,213 @@
#include <linux/firewire-constants.h>
#include <stdio.h>
#include <stdlib.h>
#include "list.h"
#include "nosy-dump.h"
#define CSR_FCP_COMMAND 0xfffff0000b00ull
#define CSR_FCP_RESPONSE 0xfffff0000d00ull
static const char * const ctype_names[] = {
[0x0] = "control", [0x8] = "not implemented",
[0x1] = "status", [0x9] = "accepted",
[0x2] = "specific inquiry", [0xa] = "rejected",
[0x3] = "notify", [0xb] = "in transition",
[0x4] = "general inquiry", [0xc] = "stable",
[0x5] = "(reserved 0x05)", [0xd] = "changed",
[0x6] = "(reserved 0x06)", [0xe] = "(reserved 0x0e)",
[0x7] = "(reserved 0x07)", [0xf] = "interim",
};
static const char * const subunit_type_names[] = {
[0x00] = "monitor", [0x10] = "(reserved 0x10)",
[0x01] = "audio", [0x11] = "(reserved 0x11)",
[0x02] = "printer", [0x12] = "(reserved 0x12)",
[0x03] = "disc", [0x13] = "(reserved 0x13)",
[0x04] = "tape recorder/player",[0x14] = "(reserved 0x14)",
[0x05] = "tuner", [0x15] = "(reserved 0x15)",
[0x06] = "ca", [0x16] = "(reserved 0x16)",
[0x07] = "camera", [0x17] = "(reserved 0x17)",
[0x08] = "(reserved 0x08)", [0x18] = "(reserved 0x18)",
[0x09] = "panel", [0x19] = "(reserved 0x19)",
[0x0a] = "bulletin board", [0x1a] = "(reserved 0x1a)",
[0x0b] = "camera storage", [0x1b] = "(reserved 0x1b)",
[0x0c] = "(reserved 0x0c)", [0x1c] = "vendor unique",
[0x0d] = "(reserved 0x0d)", [0x1d] = "all subunit types",
[0x0e] = "(reserved 0x0e)", [0x1e] = "subunit_type extended to next byte",
[0x0f] = "(reserved 0x0f)", [0x1f] = "unit",
};
struct avc_enum {
int value;
const char *name;
};
struct avc_field {
const char *name; /* Short name for field. */
int offset; /* Location of field, specified in bits; */
/* negative means from end of packet. */
int width; /* Width of field, 0 means use data_length. */
struct avc_enum *names;
};
struct avc_opcode_info {
const char *name;
struct avc_field fields[8];
};
struct avc_enum power_field_names[] = {
{ 0x70, "on" },
{ 0x60, "off" },
{ }
};
static const struct avc_opcode_info opcode_info[256] = {
/* TA Document 1999026 */
/* AV/C Digital Interface Command Set General Specification 4.0 */
[0xb2] = { "power", {
{ "state", 0, 8, power_field_names }
}
},
[0x30] = { "unit info", {
{ "foo", 0, 8 },
{ "unit_type", 8, 5 },
{ "unit", 13, 3 },
{ "company id", 16, 24 },
}
},
[0x31] = { "subunit info" },
[0x01] = { "reserve" },
[0xb0] = { "version" },
[0x00] = { "vendor dependent" },
[0x02] = { "plug info" },
[0x12] = { "channel usage" },
[0x24] = { "connect" },
[0x20] = { "connect av" },
[0x22] = { "connections" },
[0x11] = { "digital input" },
[0x10] = { "digital output" },
[0x25] = { "disconnect" },
[0x21] = { "disconnect av" },
[0x19] = { "input plug signal format" },
[0x18] = { "output plug signal format" },
[0x1f] = { "general bus setup" },
/* TA Document 1999025 */
/* AV/C Descriptor Mechanism Specification Version 1.0 */
[0x0c] = { "create descriptor" },
[0x08] = { "open descriptor" },
[0x09] = { "read descriptor" },
[0x0a] = { "write descriptor" },
[0x05] = { "open info block" },
[0x06] = { "read info block" },
[0x07] = { "write info block" },
[0x0b] = { "search descriptor" },
[0x0d] = { "object number select" },
/* TA Document 1999015 */
/* AV/C Command Set for Rate Control of Isochronous Data Flow 1.0 */
[0xb3] = { "rate", {
{ "subfunction", 0, 8 },
{ "result", 8, 8 },
{ "plug_type", 16, 8 },
{ "plug_id", 16, 8 },
}
},
/* TA Document 1999008 */
/* AV/C Audio Subunit Specification 1.0 */
[0xb8] = { "function block" },
/* TA Document 2001001 */
/* AV/C Panel Subunit Specification 1.1 */
[0x7d] = { "gui update" },
[0x7e] = { "push gui data" },
[0x7f] = { "user action" },
[0x7c] = { "pass through" },
/* */
[0x26] = { "asynchronous connection" },
};
struct avc_frame {
uint32_t operand0:8;
uint32_t opcode:8;
uint32_t subunit_id:3;
uint32_t subunit_type:5;
uint32_t ctype:4;
uint32_t cts:4;
};
static void
decode_avc(struct link_transaction *t)
{
struct avc_frame *frame =
(struct avc_frame *) t->request->packet.write_block.data;
const struct avc_opcode_info *info;
const char *name;
char buffer[32];
int i;
info = &opcode_info[frame->opcode];
if (info->name == NULL) {
snprintf(buffer, sizeof(buffer),
"(unknown opcode 0x%02x)", frame->opcode);
name = buffer;
} else {
name = info->name;
}
printf("av/c %s, subunit_type=%s, subunit_id=%d, opcode=%s",
ctype_names[frame->ctype], subunit_type_names[frame->subunit_type],
frame->subunit_id, name);
for (i = 0; info->fields[i].name != NULL; i++)
printf(", %s", info->fields[i].name);
printf("\n");
}
int
decode_fcp(struct link_transaction *t)
{
struct avc_frame *frame =
(struct avc_frame *) t->request->packet.write_block.data;
unsigned long long offset =
((unsigned long long) t->request->packet.common.offset_high << 32) |
t->request->packet.common.offset_low;
if (t->request->packet.common.tcode != TCODE_WRITE_BLOCK_REQUEST)
return 0;
if (offset == CSR_FCP_COMMAND || offset == CSR_FCP_RESPONSE) {
switch (frame->cts) {
case 0x00:
decode_avc(t);
break;
case 0x01:
printf("cal fcp frame (cts=0x01)\n");
break;
case 0x02:
printf("ehs fcp frame (cts=0x02)\n");
break;
case 0x03:
printf("havi fcp frame (cts=0x03)\n");
break;
case 0x0e:
printf("vendor specific fcp frame (cts=0x0e)\n");
break;
case 0x0f:
printf("extended cts\n");
break;
default:
printf("reserved fcp frame (ctx=0x%02x)\n", frame->cts);
break;
}
return 1;
}
return 0;
}

62
tools/firewire/list.h Normal file
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@ -0,0 +1,62 @@
struct list {
struct list *next, *prev;
};
static inline void
list_init(struct list *list)
{
list->next = list;
list->prev = list;
}
static inline int
list_empty(struct list *list)
{
return list->next == list;
}
static inline void
list_insert(struct list *link, struct list *new_link)
{
new_link->prev = link->prev;
new_link->next = link;
new_link->prev->next = new_link;
new_link->next->prev = new_link;
}
static inline void
list_append(struct list *list, struct list *new_link)
{
list_insert((struct list *)list, new_link);
}
static inline void
list_prepend(struct list *list, struct list *new_link)
{
list_insert(list->next, new_link);
}
static inline void
list_remove(struct list *link)
{
link->prev->next = link->next;
link->next->prev = link->prev;
}
#define list_entry(link, type, member) \
((type *)((char *)(link)-(unsigned long)(&((type *)0)->member)))
#define list_head(list, type, member) \
list_entry((list)->next, type, member)
#define list_tail(list, type, member) \
list_entry((list)->prev, type, member)
#define list_next(elm, member) \
list_entry((elm)->member.next, typeof(*elm), member)
#define list_for_each_entry(pos, list, member) \
for (pos = list_head(list, typeof(*pos), member); \
&pos->member != (list); \
pos = list_next(pos, member))

1031
tools/firewire/nosy-dump.c Normal file
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File diff suppressed because it is too large Load Diff

173
tools/firewire/nosy-dump.h Normal file
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@ -0,0 +1,173 @@
#ifndef __nosy_dump_h__
#define __nosy_dump_h__
#define array_length(array) (sizeof(array) / sizeof(array[0]))
#define ACK_NO_ACK 0x0
#define ACK_DONE(a) ((a >> 2) == 0)
#define ACK_BUSY(a) ((a >> 2) == 1)
#define ACK_ERROR(a) ((a >> 2) == 3)
#include <stdint.h>
struct phy_packet {
uint32_t timestamp;
union {
struct {
uint32_t zero:24;
uint32_t phy_id:6;
uint32_t identifier:2;
} common, link_on;
struct {
uint32_t zero:16;
uint32_t gap_count:6;
uint32_t set_gap_count:1;
uint32_t set_root:1;
uint32_t root_id:6;
uint32_t identifier:2;
} phy_config;
struct {
uint32_t more_packets:1;
uint32_t initiated_reset:1;
uint32_t port2:2;
uint32_t port1:2;
uint32_t port0:2;
uint32_t power_class:3;
uint32_t contender:1;
uint32_t phy_delay:2;
uint32_t phy_speed:2;
uint32_t gap_count:6;
uint32_t link_active:1;
uint32_t extended:1;
uint32_t phy_id:6;
uint32_t identifier:2;
} self_id;
struct {
uint32_t more_packets:1;
uint32_t reserved1:1;
uint32_t porth:2;
uint32_t portg:2;
uint32_t portf:2;
uint32_t porte:2;
uint32_t portd:2;
uint32_t portc:2;
uint32_t portb:2;
uint32_t porta:2;
uint32_t reserved0:2;
uint32_t sequence:3;
uint32_t extended:1;
uint32_t phy_id:6;
uint32_t identifier:2;
} ext_self_id;
};
uint32_t inverted;
uint32_t ack;
};
#define TCODE_PHY_PACKET 0x10
#define PHY_PACKET_CONFIGURATION 0x00
#define PHY_PACKET_LINK_ON 0x01
#define PHY_PACKET_SELF_ID 0x02
struct link_packet {
uint32_t timestamp;
union {
struct {
uint32_t priority:4;
uint32_t tcode:4;
uint32_t rt:2;
uint32_t tlabel:6;
uint32_t destination:16;
uint32_t offset_high:16;
uint32_t source:16;
uint32_t offset_low;
} common;
struct {
uint32_t common[3];
uint32_t crc;
} read_quadlet;
struct {
uint32_t common[3];
uint32_t data;
uint32_t crc;
} read_quadlet_response;
struct {
uint32_t common[3];
uint32_t extended_tcode:16;
uint32_t data_length:16;
uint32_t crc;
} read_block;
struct {
uint32_t common[3];
uint32_t extended_tcode:16;
uint32_t data_length:16;
uint32_t crc;
uint32_t data[0];
/* crc and ack follows. */
} read_block_response;
struct {
uint32_t common[3];
uint32_t data;
uint32_t crc;
} write_quadlet;
struct {
uint32_t common[3];
uint32_t extended_tcode:16;
uint32_t data_length:16;
uint32_t crc;
uint32_t data[0];
/* crc and ack follows. */
} write_block;
struct {
uint32_t common[3];
uint32_t crc;
} write_response;
struct {
uint32_t common[3];
uint32_t data;
uint32_t crc;
} cycle_start;
struct {
uint32_t sy:4;
uint32_t tcode:4;
uint32_t channel:6;
uint32_t tag:2;
uint32_t data_length:16;
uint32_t crc;
} iso_data;
};
};
struct subaction {
uint32_t ack;
size_t length;
struct list link;
struct link_packet packet;
};
struct link_transaction {
int request_node, response_node, tlabel;
struct subaction *request, *response;
struct list request_list, response_list;
struct list link;
};
int decode_fcp(struct link_transaction *t);
#endif /* __nosy_dump_h__ */