* 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>
#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>
#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;
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;
};
struct inbound_transaction_resource {
struct client_resource resource;
+ struct fw_card *card;
struct fw_request *request;
void *data;
size_t length;
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 {
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;
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;
list_add_tail(&client->link, &device->client_list);
mutex_unlock(&device->client_list_mutex);
- return 0;
+ return nonseekable_open(inode, file);
}
static void queue_event(struct client *client, struct event *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;
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;
}
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)
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);
(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;
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;
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:
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,
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;
kfree(r);
return ret;
}
+ a->offset = r->handler.offset;
r->resource.release = release_address_handler;
ret = add_client_resource(client, &r->resource, GFP_KERNEL);
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;
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,
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;
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:
}
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)
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 {
* 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 ||
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;
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;
+ break;
+
+ case FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL:
+ if (u.packet.payload_length == 0 ||
+ u.packet.payload_length & 3)
return -EINVAL;
- }
- header_length = 0;
+ 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)
{
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;
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;
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,
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);
const struct file_operations fw_device_ops = {
.owner = THIS_MODULE,
+ .llseek = no_llseek,
.open = fw_device_op_open,
.read = fw_device_op_read,
.unlocked_ioctl = fw_device_op_ioctl,
- .poll = fw_device_op_poll,
- .release = fw_device_op_release,
.mmap = fw_device_op_mmap,
-
+ .release = fw_device_op_release,
+ .poll = fw_device_op_poll,
#ifdef CONFIG_COMPAT
.compat_ioctl = fw_device_op_compat_ioctl,
#endif
git.openpandora.org / pandora-kernel.git / blobdiff