* 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/firewire.h>
#include <linux/firewire-cdev.h>
#include <linux/idr.h>
+#include <linux/irqflags.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/kref.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/poll.h>
-#include <linux/preempt.h>
#include <linux/sched.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
+
struct client {
u32 version;
struct fw_device *device;
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 {
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;
for_each_client(device, wake_up_client);
}
-static int ioctl_get_info(struct client *client, void *buffer)
+union ioctl_arg {
+ struct fw_cdev_get_info get_info;
+ struct fw_cdev_send_request send_request;
+ struct fw_cdev_allocate allocate;
+ struct fw_cdev_deallocate deallocate;
+ struct fw_cdev_send_response send_response;
+ struct fw_cdev_initiate_bus_reset initiate_bus_reset;
+ struct fw_cdev_add_descriptor add_descriptor;
+ struct fw_cdev_remove_descriptor remove_descriptor;
+ struct fw_cdev_create_iso_context create_iso_context;
+ struct fw_cdev_queue_iso queue_iso;
+ struct fw_cdev_start_iso start_iso;
+ struct fw_cdev_stop_iso stop_iso;
+ struct fw_cdev_get_cycle_timer get_cycle_timer;
+ 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;
+};
+
+static int ioctl_get_info(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_get_info *get_info = buffer;
+ struct fw_cdev_get_info *a = &arg->get_info;
struct fw_cdev_event_bus_reset bus_reset;
unsigned long ret = 0;
- client->version = get_info->version;
- get_info->version = FW_CDEV_VERSION;
- get_info->card = client->device->card->index;
+ client->version = a->version;
+ a->version = FW_CDEV_KERNEL_VERSION;
+ a->card = client->device->card->index;
down_read(&fw_device_rwsem);
- if (get_info->rom != 0) {
- void __user *uptr = u64_to_uptr(get_info->rom);
- size_t want = get_info->rom_length;
+ if (a->rom != 0) {
+ size_t want = a->rom_length;
size_t have = client->device->config_rom_length * 4;
- ret = copy_to_user(uptr, client->device->config_rom,
- min(want, have));
+ ret = copy_to_user(u64_to_uptr(a->rom),
+ client->device->config_rom, min(want, have));
}
- get_info->rom_length = client->device->config_rom_length * 4;
+ a->rom_length = client->device->config_rom_length * 4;
up_read(&fw_device_rwsem);
if (ret != 0)
return -EFAULT;
- client->bus_reset_closure = get_info->bus_reset_closure;
- if (get_info->bus_reset != 0) {
- void __user *uptr = u64_to_uptr(get_info->bus_reset);
-
+ client->bus_reset_closure = a->bus_reset_closure;
+ if (a->bus_reset != 0) {
fill_bus_reset_event(&bus_reset, client);
- if (copy_to_user(uptr, &bus_reset, sizeof(bus_reset)))
+ if (copy_to_user(u64_to_uptr(a->bus_reset),
+ &bus_reset, sizeof(bus_reset)))
return -EFAULT;
}
(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;
return ret;
}
-static int ioctl_send_request(struct client *client, void *buffer)
+static int ioctl_send_request(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_send_request *request = buffer;
-
- switch (request->tcode) {
+ switch (arg->send_request.tcode) {
case TCODE_WRITE_QUADLET_REQUEST:
case TCODE_WRITE_BLOCK_REQUEST:
case TCODE_READ_QUADLET_REQUEST:
return -EINVAL;
}
- return init_request(client, request, client->device->node_id,
+ return init_request(client, &arg->send_request, client->device->node_id,
client->device->max_speed);
}
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)
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,
kfree(r);
}
-static int ioctl_allocate(struct client *client, void *buffer)
+static int ioctl_allocate(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_allocate *request = buffer;
+ struct fw_cdev_allocate *a = &arg->allocate;
struct address_handler_resource *r;
struct fw_address_region region;
int ret;
if (r == NULL)
return -ENOMEM;
- region.start = request->offset;
- region.end = request->offset + request->length;
- r->handler.length = request->length;
+ region.start = a->offset;
+ region.end = a->offset + a->length;
+ r->handler.length = a->length;
r->handler.address_callback = handle_request;
- r->handler.callback_data = r;
- r->closure = request->closure;
- r->client = client;
+ r->handler.callback_data = r;
+ r->closure = a->closure;
+ r->client = client;
ret = fw_core_add_address_handler(&r->handler, ®ion);
if (ret < 0) {
release_address_handler(client, &r->resource);
return ret;
}
- request->handle = r->resource.handle;
+ a->handle = r->resource.handle;
return 0;
}
-static int ioctl_deallocate(struct client *client, void *buffer)
+static int ioctl_deallocate(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_deallocate *request = buffer;
-
- return release_client_resource(client, request->handle,
+ return release_client_resource(client, arg->deallocate.handle,
release_address_handler, NULL);
}
-static int ioctl_send_response(struct client *client, void *buffer)
+static int ioctl_send_response(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_send_response *request = buffer;
+ struct fw_cdev_send_response *a = &arg->send_response;
struct client_resource *resource;
struct inbound_transaction_resource *r;
int ret = 0;
- if (release_client_resource(client, request->handle,
+ if (release_client_resource(client, a->handle,
release_request, &resource) < 0)
return -EINVAL;
if (is_fcp_request(r->request))
goto out;
- if (request->length < r->length)
- r->length = request->length;
- if (copy_from_user(r->data, u64_to_uptr(request->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, request->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, void *buffer)
+static int ioctl_initiate_bus_reset(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_initiate_bus_reset *request = buffer;
- int short_reset;
-
- short_reset = (request->type == FW_CDEV_SHORT_RESET);
-
- return fw_core_initiate_bus_reset(client->device->card, short_reset);
+ 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,
kfree(r);
}
-static int ioctl_add_descriptor(struct client *client, void *buffer)
+static int ioctl_add_descriptor(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_add_descriptor *request = buffer;
+ struct fw_cdev_add_descriptor *a = &arg->add_descriptor;
struct descriptor_resource *r;
int ret;
if (!client->device->is_local)
return -ENOSYS;
- if (request->length > 256)
+ if (a->length > 256)
return -EINVAL;
- r = kmalloc(sizeof(*r) + request->length * 4, GFP_KERNEL);
+ r = kmalloc(sizeof(*r) + a->length * 4, GFP_KERNEL);
if (r == NULL)
return -ENOMEM;
- if (copy_from_user(r->data,
- u64_to_uptr(request->data), request->length * 4)) {
+ if (copy_from_user(r->data, u64_to_uptr(a->data), a->length * 4)) {
ret = -EFAULT;
goto failed;
}
- r->descriptor.length = request->length;
- r->descriptor.immediate = request->immediate;
- r->descriptor.key = request->key;
+ r->descriptor.length = a->length;
+ r->descriptor.immediate = a->immediate;
+ r->descriptor.key = a->key;
r->descriptor.data = r->data;
ret = fw_core_add_descriptor(&r->descriptor);
fw_core_remove_descriptor(&r->descriptor);
goto failed;
}
- request->handle = r->resource.handle;
+ a->handle = r->resource.handle;
return 0;
failed:
return ret;
}
-static int ioctl_remove_descriptor(struct client *client, void *buffer)
+static int ioctl_remove_descriptor(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_remove_descriptor *request = buffer;
-
- return release_client_resource(client, request->handle,
+ return release_client_resource(client, arg->remove_descriptor.handle,
release_descriptor, NULL);
}
struct client *client = data;
struct iso_interrupt_event *e;
- e = kzalloc(sizeof(*e) + header_length, GFP_ATOMIC);
+ e = kmalloc(sizeof(*e) + header_length, GFP_ATOMIC);
if (e == NULL)
return;
sizeof(e->interrupt) + header_length, NULL, 0);
}
-static int ioctl_create_iso_context(struct client *client, void *buffer)
+static int ioctl_create_iso_context(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_create_iso_context *request = buffer;
+ struct fw_cdev_create_iso_context *a = &arg->create_iso_context;
struct fw_iso_context *context;
- /* We only support one context at this time. */
- if (client->iso_context != NULL)
- return -EBUSY;
+ BUILD_BUG_ON(FW_CDEV_ISO_CONTEXT_TRANSMIT != FW_ISO_CONTEXT_TRANSMIT ||
+ FW_CDEV_ISO_CONTEXT_RECEIVE != FW_ISO_CONTEXT_RECEIVE);
- if (request->channel > 63)
+ if (a->channel > 63)
return -EINVAL;
- switch (request->type) {
+ switch (a->type) {
case FW_ISO_CONTEXT_RECEIVE:
- if (request->header_size < 4 || (request->header_size & 3))
+ if (a->header_size < 4 || (a->header_size & 3))
return -EINVAL;
-
break;
case FW_ISO_CONTEXT_TRANSMIT:
- if (request->speed > SCODE_3200)
+ if (a->speed > SCODE_3200)
return -EINVAL;
-
break;
default:
return -EINVAL;
}
- context = fw_iso_context_create(client->device->card,
- request->type,
- request->channel,
- request->speed,
- request->header_size,
- iso_callback, client);
+ context = fw_iso_context_create(client->device->card, a->type,
+ a->channel, a->speed, a->header_size,
+ iso_callback, client);
if (IS_ERR(context))
return PTR_ERR(context);
- client->iso_closure = request->closure;
+ /* 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. */
- request->handle = 0;
+ a->handle = 0;
return 0;
}
#define GET_SY(v) (((v) >> 20) & 0x0f)
#define GET_HEADER_LENGTH(v) (((v) >> 24) & 0xff)
-static int ioctl_queue_iso(struct client *client, void *buffer)
+static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_queue_iso *request = buffer;
+ 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;
u8 header[256];
} u;
- if (ctx == NULL || request->handle != 0)
+ if (ctx == NULL || a->handle != 0)
return -EINVAL;
/*
* set them both to 0, which will still let packets with
* payload_length == 0 through. In other words, if no packets
* use the indirect payload, the iso buffer need not be mapped
- * and the request->data pointer is ignored.
+ * and the a->data pointer is ignored.
*/
- payload = (unsigned long)request->data - client->vm_start;
+ payload = (unsigned long)a->data - client->vm_start;
buffer_end = client->buffer.page_count << PAGE_SHIFT;
- if (request->data == 0 || client->buffer.pages == NULL ||
+ if (a->data == 0 || client->buffer.pages == NULL ||
payload >= buffer_end) {
payload = 0;
buffer_end = 0;
}
- p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(request->packets);
+ p = (struct fw_cdev_iso_packet __user *)u64_to_uptr(a->packets);
- if (!access_ok(VERIFY_READ, p, request->size))
+ if (!access_ok(VERIFY_READ, p, a->size))
return -EFAULT;
- end = (void __user *)p + request->size;
+ end = (void __user *)p + a->size;
count = 0;
while (p < end) {
if (get_user(control, &p->control))
u.packet.header_length = GET_HEADER_LENGTH(control);
if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) {
+ if (u.packet.header_length % 4 != 0)
+ return -EINVAL;
header_length = u.packet.header_length;
} else {
/*
if (ctx->header_size == 0) {
if (u.packet.header_length > 0)
return -EINVAL;
- } else if (u.packet.header_length % ctx->header_size != 0) {
+ } else if (u.packet.header_length == 0 ||
+ u.packet.header_length % ctx->header_size != 0) {
return -EINVAL;
}
header_length = 0;
count++;
}
- request->size -= uptr_to_u64(p) - request->packets;
- request->packets = uptr_to_u64(p);
- request->data = client->vm_start + payload;
+ a->size -= uptr_to_u64(p) - a->packets;
+ a->packets = uptr_to_u64(p);
+ a->data = client->vm_start + payload;
return count;
}
-static int ioctl_start_iso(struct client *client, void *buffer)
+static int ioctl_start_iso(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_start_iso *request = buffer;
+ struct fw_cdev_start_iso *a = &arg->start_iso;
- if (client->iso_context == NULL || request->handle != 0)
- return -EINVAL;
+ 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->type == FW_ISO_CONTEXT_RECEIVE) {
- if (request->tags == 0 || request->tags > 15)
- return -EINVAL;
+ if (client->iso_context == NULL || a->handle != 0)
+ return -EINVAL;
- if (request->sync > 15)
- return -EINVAL;
- }
+ if (client->iso_context->type == FW_ISO_CONTEXT_RECEIVE &&
+ (a->tags == 0 || a->tags > 15 || a->sync > 15))
+ return -EINVAL;
- return fw_iso_context_start(client->iso_context, request->cycle,
- request->sync, request->tags);
+ return fw_iso_context_start(client->iso_context,
+ a->cycle, a->sync, a->tags);
}
-static int ioctl_stop_iso(struct client *client, void *buffer)
+static int ioctl_stop_iso(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_stop_iso *request = buffer;
+ struct fw_cdev_stop_iso *a = &arg->stop_iso;
- if (client->iso_context == NULL || request->handle != 0)
+ if (client->iso_context == NULL || a->handle != 0)
return -EINVAL;
return fw_iso_context_stop(client->iso_context);
}
-static int ioctl_get_cycle_timer(struct client *client, void *buffer)
+static int ioctl_get_cycle_timer2(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_get_cycle_timer *request = buffer;
+ struct fw_cdev_get_cycle_timer2 *a = &arg->get_cycle_timer2;
struct fw_card *card = client->device->card;
- unsigned long long bus_time;
- struct timeval tv;
- unsigned long flags;
+ struct timespec ts = {0, 0};
+ u32 cycle_time;
+ int ret = 0;
- preempt_disable();
- local_irq_save(flags);
+ local_irq_disable();
- bus_time = card->driver->get_bus_time(card);
- do_gettimeofday(&tv);
+ cycle_time = card->driver->read_csr(card, CSR_CYCLE_TIME);
- local_irq_restore(flags);
- preempt_enable();
+ switch (a->clk_id) {
+ case CLOCK_REALTIME: getnstimeofday(&ts); break;
+ case CLOCK_MONOTONIC: do_posix_clock_monotonic_gettime(&ts); break;
+ case CLOCK_MONOTONIC_RAW: getrawmonotonic(&ts); break;
+ default:
+ ret = -EINVAL;
+ }
+
+ local_irq_enable();
+
+ a->tv_sec = ts.tv_sec;
+ a->tv_nsec = ts.tv_nsec;
+ a->cycle_timer = cycle_time;
+
+ return ret;
+}
+
+static int ioctl_get_cycle_timer(struct client *client, union ioctl_arg *arg)
+{
+ struct fw_cdev_get_cycle_timer *a = &arg->get_cycle_timer;
+ struct fw_cdev_get_cycle_timer2 ct2;
+
+ ct2.clk_id = CLOCK_REALTIME;
+ ioctl_get_cycle_timer2(client, (union ioctl_arg *)&ct2);
+
+ a->local_time = ct2.tv_sec * USEC_PER_SEC + ct2.tv_nsec / NSEC_PER_USEC;
+ a->cycle_timer = ct2.cycle_timer;
- request->local_time = tv.tv_sec * 1000000ULL + tv.tv_usec;
- request->cycle_timer = bus_time & 0xffffffff;
return 0;
}
return ret;
}
-static int ioctl_allocate_iso_resource(struct client *client, void *buffer)
+static int ioctl_allocate_iso_resource(struct client *client,
+ union ioctl_arg *arg)
{
- struct fw_cdev_allocate_iso_resource *request = buffer;
-
- return init_iso_resource(client, request, ISO_RES_ALLOC);
+ return init_iso_resource(client,
+ &arg->allocate_iso_resource, ISO_RES_ALLOC);
}
-static int ioctl_deallocate_iso_resource(struct client *client, void *buffer)
+static int ioctl_deallocate_iso_resource(struct client *client,
+ union ioctl_arg *arg)
{
- struct fw_cdev_deallocate *request = buffer;
-
- return release_client_resource(client, request->handle,
- release_iso_resource, NULL);
+ return release_client_resource(client,
+ arg->deallocate.handle, release_iso_resource, NULL);
}
-static int ioctl_allocate_iso_resource_once(struct client *client, void *buffer)
+static int ioctl_allocate_iso_resource_once(struct client *client,
+ union ioctl_arg *arg)
{
- struct fw_cdev_allocate_iso_resource *request = buffer;
-
- return init_iso_resource(client, request, ISO_RES_ALLOC_ONCE);
+ return init_iso_resource(client,
+ &arg->allocate_iso_resource, ISO_RES_ALLOC_ONCE);
}
-static int ioctl_deallocate_iso_resource_once(struct client *client, void *buffer)
+static int ioctl_deallocate_iso_resource_once(struct client *client,
+ union ioctl_arg *arg)
{
- struct fw_cdev_allocate_iso_resource *request = buffer;
-
- return init_iso_resource(client, request, ISO_RES_DEALLOC_ONCE);
+ return init_iso_resource(client,
+ &arg->allocate_iso_resource, ISO_RES_DEALLOC_ONCE);
}
/*
* limited by the device's link speed, the local node's link speed,
* and all PHY port speeds between the two links.
*/
-static int ioctl_get_speed(struct client *client, void *buffer)
+static int ioctl_get_speed(struct client *client, union ioctl_arg *arg)
{
return client->device->max_speed;
}
-static int ioctl_send_broadcast_request(struct client *client, void *buffer)
+static int ioctl_send_broadcast_request(struct client *client,
+ union ioctl_arg *arg)
{
- struct fw_cdev_send_request *request = buffer;
+ struct fw_cdev_send_request *a = &arg->send_request;
- switch (request->tcode) {
+ switch (a->tcode) {
case TCODE_WRITE_QUADLET_REQUEST:
case TCODE_WRITE_BLOCK_REQUEST:
break;
}
/* Security policy: Only allow accesses to Units Space. */
- if (request->offset < CSR_REGISTER_BASE + CSR_CONFIG_ROM_END)
+ if (a->offset < CSR_REGISTER_BASE + CSR_CONFIG_ROM_END)
return -EACCES;
- return init_request(client, request, LOCAL_BUS | 0x3f, SCODE_100);
+ return init_request(client, a, LOCAL_BUS | 0x3f, SCODE_100);
}
-static int ioctl_send_stream_packet(struct client *client, void *buffer)
+static int ioctl_send_stream_packet(struct client *client, union ioctl_arg *arg)
{
- struct fw_cdev_send_stream_packet *p = buffer;
+ struct fw_cdev_send_stream_packet *a = &arg->send_stream_packet;
struct fw_cdev_send_request request;
int dest;
- if (p->speed > client->device->card->link_speed ||
- p->length > 1024 << p->speed)
+ if (a->speed > client->device->card->link_speed ||
+ a->length > 1024 << a->speed)
return -EIO;
- if (p->tag > 3 || p->channel > 63 || p->sy > 15)
+ if (a->tag > 3 || a->channel > 63 || a->sy > 15)
return -EINVAL;
- dest = fw_stream_packet_destination_id(p->tag, p->channel, p->sy);
+ dest = fw_stream_packet_destination_id(a->tag, a->channel, a->sy);
request.tcode = TCODE_STREAM_DATA;
- request.length = p->length;
- request.closure = p->closure;
- request.data = p->data;
- request.generation = p->generation;
+ request.length = a->length;
+ request.closure = a->closure;
+ request.data = a->data;
+ request.generation = a->generation;
- return init_request(client, &request, dest, p->speed);
+ return init_request(client, &request, dest, a->speed);
}
-static int (* const ioctl_handlers[])(struct client *client, void *buffer) = {
+static int (* const ioctl_handlers[])(struct client *, union ioctl_arg *) = {
ioctl_get_info,
ioctl_send_request,
ioctl_allocate,
ioctl_get_speed,
ioctl_send_broadcast_request,
ioctl_send_stream_packet,
+ ioctl_get_cycle_timer2,
};
static int dispatch_ioctl(struct client *client,
unsigned int cmd, void __user *arg)
{
- char buffer[sizeof(union {
- struct fw_cdev_get_info _00;
- struct fw_cdev_send_request _01;
- struct fw_cdev_allocate _02;
- struct fw_cdev_deallocate _03;
- struct fw_cdev_send_response _04;
- struct fw_cdev_initiate_bus_reset _05;
- struct fw_cdev_add_descriptor _06;
- struct fw_cdev_remove_descriptor _07;
- struct fw_cdev_create_iso_context _08;
- struct fw_cdev_queue_iso _09;
- struct fw_cdev_start_iso _0a;
- struct fw_cdev_stop_iso _0b;
- struct fw_cdev_get_cycle_timer _0c;
- struct fw_cdev_allocate_iso_resource _0d;
- struct fw_cdev_send_stream_packet _13;
- })];
+ union ioctl_arg buffer;
int ret;
+ if (fw_device_is_shutdown(client->device))
+ return -ENODEV;
+
if (_IOC_TYPE(cmd) != '#' ||
- _IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers))
+ _IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers) ||
+ _IOC_SIZE(cmd) > sizeof(buffer))
return -EINVAL;
- if (_IOC_DIR(cmd) & _IOC_WRITE) {
- if (_IOC_SIZE(cmd) > sizeof(buffer) ||
- copy_from_user(buffer, arg, _IOC_SIZE(cmd)))
+ if (_IOC_DIR(cmd) == _IOC_READ)
+ memset(&buffer, 0, _IOC_SIZE(cmd));
+
+ if (_IOC_DIR(cmd) & _IOC_WRITE)
+ if (copy_from_user(&buffer, arg, _IOC_SIZE(cmd)))
return -EFAULT;
- }
- ret = ioctl_handlers[_IOC_NR(cmd)](client, buffer);
+ ret = ioctl_handlers[_IOC_NR(cmd)](client, &buffer);
if (ret < 0)
return ret;
- if (_IOC_DIR(cmd) & _IOC_READ) {
- if (_IOC_SIZE(cmd) > sizeof(buffer) ||
- copy_to_user(arg, buffer, _IOC_SIZE(cmd)))
+ if (_IOC_DIR(cmd) & _IOC_READ)
+ if (copy_to_user(arg, &buffer, _IOC_SIZE(cmd)))
return -EFAULT;
- }
return ret;
}
static long fw_device_op_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
- struct client *client = file->private_data;
-
- if (fw_device_is_shutdown(client->device))
- return -ENODEV;
-
- return dispatch_ioctl(client, cmd, (void __user *) arg);
+ return dispatch_ioctl(file->private_data, cmd, (void __user *)arg);
}
#ifdef CONFIG_COMPAT
static long fw_device_op_compat_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
- struct client *client = file->private_data;
-
- if (fw_device_is_shutdown(client->device))
- return -ENODEV;
-
- return dispatch_ioctl(client, cmd, compat_ptr(arg));
+ return dispatch_ioctl(file->private_data, cmd, compat_ptr(arg));
}
#endif
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