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path: root/drivers/ieee1394/iso.c
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Diffstat (limited to 'drivers/ieee1394/iso.c')
-rw-r--r--drivers/ieee1394/iso.c102
1 files changed, 60 insertions, 42 deletions
diff --git a/drivers/ieee1394/iso.c b/drivers/ieee1394/iso.c
index 615541b8b90f..f26680ebef7c 100644
--- a/drivers/ieee1394/iso.c
+++ b/drivers/ieee1394/iso.c
@@ -36,20 +36,22 @@ void hpsb_iso_shutdown(struct hpsb_iso *iso)
kfree(iso);
}
-static struct hpsb_iso* hpsb_iso_common_init(struct hpsb_host *host, enum hpsb_iso_type type,
+static struct hpsb_iso *hpsb_iso_common_init(struct hpsb_host *host,
+ enum hpsb_iso_type type,
unsigned int data_buf_size,
unsigned int buf_packets,
- int channel,
- int dma_mode,
+ int channel, int dma_mode,
int irq_interval,
- void (*callback)(struct hpsb_iso*))
+ void (*callback) (struct hpsb_iso
+ *))
{
struct hpsb_iso *iso;
int dma_direction;
/* make sure driver supports the ISO API */
if (!host->driver->isoctl) {
- printk(KERN_INFO "ieee1394: host driver '%s' does not support the rawiso API\n",
+ printk(KERN_INFO
+ "ieee1394: host driver '%s' does not support the rawiso API\n",
host->driver->name);
return NULL;
}
@@ -59,12 +61,13 @@ static struct hpsb_iso* hpsb_iso_common_init(struct hpsb_host *host, enum hpsb_i
if (buf_packets < 2)
buf_packets = 2;
- if ((dma_mode < HPSB_ISO_DMA_DEFAULT) || (dma_mode > HPSB_ISO_DMA_PACKET_PER_BUFFER))
- dma_mode=HPSB_ISO_DMA_DEFAULT;
+ if ((dma_mode < HPSB_ISO_DMA_DEFAULT)
+ || (dma_mode > HPSB_ISO_DMA_PACKET_PER_BUFFER))
+ dma_mode = HPSB_ISO_DMA_DEFAULT;
if ((irq_interval < 0) || (irq_interval > buf_packets / 4))
- irq_interval = buf_packets / 4;
- if (irq_interval == 0) /* really interrupt for each packet*/
+ irq_interval = buf_packets / 4;
+ if (irq_interval == 0) /* really interrupt for each packet */
irq_interval = 1;
if (channel < -1 || channel >= 64)
@@ -76,7 +79,10 @@ static struct hpsb_iso* hpsb_iso_common_init(struct hpsb_host *host, enum hpsb_i
/* allocate and write the struct hpsb_iso */
- iso = kmalloc(sizeof(*iso) + buf_packets * sizeof(struct hpsb_iso_packet_info), GFP_KERNEL);
+ iso =
+ kmalloc(sizeof(*iso) +
+ buf_packets * sizeof(struct hpsb_iso_packet_info),
+ GFP_KERNEL);
if (!iso)
return NULL;
@@ -111,17 +117,18 @@ static struct hpsb_iso* hpsb_iso_common_init(struct hpsb_host *host, enum hpsb_i
iso->prebuffer = 0;
/* allocate the packet buffer */
- if (dma_region_alloc(&iso->data_buf, iso->buf_size, host->pdev, dma_direction))
+ if (dma_region_alloc
+ (&iso->data_buf, iso->buf_size, host->pdev, dma_direction))
goto err;
return iso;
-err:
+ err:
hpsb_iso_shutdown(iso);
return NULL;
}
-int hpsb_iso_n_ready(struct hpsb_iso* iso)
+int hpsb_iso_n_ready(struct hpsb_iso *iso)
{
unsigned long flags;
int val;
@@ -133,18 +140,19 @@ int hpsb_iso_n_ready(struct hpsb_iso* iso)
return val;
}
-
-struct hpsb_iso* hpsb_iso_xmit_init(struct hpsb_host *host,
+struct hpsb_iso *hpsb_iso_xmit_init(struct hpsb_host *host,
unsigned int data_buf_size,
unsigned int buf_packets,
int channel,
int speed,
int irq_interval,
- void (*callback)(struct hpsb_iso*))
+ void (*callback) (struct hpsb_iso *))
{
struct hpsb_iso *iso = hpsb_iso_common_init(host, HPSB_ISO_XMIT,
data_buf_size, buf_packets,
- channel, HPSB_ISO_DMA_DEFAULT, irq_interval, callback);
+ channel,
+ HPSB_ISO_DMA_DEFAULT,
+ irq_interval, callback);
if (!iso)
return NULL;
@@ -157,22 +165,23 @@ struct hpsb_iso* hpsb_iso_xmit_init(struct hpsb_host *host,
iso->flags |= HPSB_ISO_DRIVER_INIT;
return iso;
-err:
+ err:
hpsb_iso_shutdown(iso);
return NULL;
}
-struct hpsb_iso* hpsb_iso_recv_init(struct hpsb_host *host,
+struct hpsb_iso *hpsb_iso_recv_init(struct hpsb_host *host,
unsigned int data_buf_size,
unsigned int buf_packets,
int channel,
int dma_mode,
int irq_interval,
- void (*callback)(struct hpsb_iso*))
+ void (*callback) (struct hpsb_iso *))
{
struct hpsb_iso *iso = hpsb_iso_common_init(host, HPSB_ISO_RECV,
data_buf_size, buf_packets,
- channel, dma_mode, irq_interval, callback);
+ channel, dma_mode,
+ irq_interval, callback);
if (!iso)
return NULL;
@@ -183,7 +192,7 @@ struct hpsb_iso* hpsb_iso_recv_init(struct hpsb_host *host,
iso->flags |= HPSB_ISO_DRIVER_INIT;
return iso;
-err:
+ err:
hpsb_iso_shutdown(iso);
return NULL;
}
@@ -197,16 +206,17 @@ int hpsb_iso_recv_listen_channel(struct hpsb_iso *iso, unsigned char channel)
int hpsb_iso_recv_unlisten_channel(struct hpsb_iso *iso, unsigned char channel)
{
- if (iso->type != HPSB_ISO_RECV || iso->channel != -1 || channel >= 64)
- return -EINVAL;
- return iso->host->driver->isoctl(iso, RECV_UNLISTEN_CHANNEL, channel);
+ if (iso->type != HPSB_ISO_RECV || iso->channel != -1 || channel >= 64)
+ return -EINVAL;
+ return iso->host->driver->isoctl(iso, RECV_UNLISTEN_CHANNEL, channel);
}
int hpsb_iso_recv_set_channel_mask(struct hpsb_iso *iso, u64 mask)
{
if (iso->type != HPSB_ISO_RECV || iso->channel != -1)
return -EINVAL;
- return iso->host->driver->isoctl(iso, RECV_SET_CHANNEL_MASK, (unsigned long) &mask);
+ return iso->host->driver->isoctl(iso, RECV_SET_CHANNEL_MASK,
+ (unsigned long)&mask);
}
int hpsb_iso_recv_flush(struct hpsb_iso *iso)
@@ -283,7 +293,9 @@ int hpsb_iso_recv_start(struct hpsb_iso *iso, int cycle, int tag_mask, int sync)
isoctl_args[2] = sync;
- retval = iso->host->driver->isoctl(iso, RECV_START, (unsigned long) &isoctl_args[0]);
+ retval =
+ iso->host->driver->isoctl(iso, RECV_START,
+ (unsigned long)&isoctl_args[0]);
if (retval)
return retval;
@@ -296,7 +308,8 @@ int hpsb_iso_recv_start(struct hpsb_iso *iso, int cycle, int tag_mask, int sync)
static int hpsb_iso_check_offset_len(struct hpsb_iso *iso,
unsigned int offset, unsigned short len,
- unsigned int *out_offset, unsigned short *out_len)
+ unsigned int *out_offset,
+ unsigned short *out_len)
{
if (offset >= iso->buf_size)
return -EFAULT;
@@ -316,8 +329,8 @@ static int hpsb_iso_check_offset_len(struct hpsb_iso *iso,
return 0;
}
-
-int hpsb_iso_xmit_queue_packet(struct hpsb_iso *iso, u32 offset, u16 len, u8 tag, u8 sy)
+int hpsb_iso_xmit_queue_packet(struct hpsb_iso *iso, u32 offset, u16 len,
+ u8 tag, u8 sy)
{
struct hpsb_iso_packet_info *info;
unsigned long flags;
@@ -334,7 +347,8 @@ int hpsb_iso_xmit_queue_packet(struct hpsb_iso *iso, u32 offset, u16 len, u8 tag
info = &iso->infos[iso->first_packet];
/* check for bogus offset/length */
- if (hpsb_iso_check_offset_len(iso, offset, len, &info->offset, &info->len))
+ if (hpsb_iso_check_offset_len
+ (iso, offset, len, &info->offset, &info->len))
return -EFAULT;
info->tag = tag;
@@ -342,13 +356,13 @@ int hpsb_iso_xmit_queue_packet(struct hpsb_iso *iso, u32 offset, u16 len, u8 tag
spin_lock_irqsave(&iso->lock, flags);
- rv = iso->host->driver->isoctl(iso, XMIT_QUEUE, (unsigned long) info);
+ rv = iso->host->driver->isoctl(iso, XMIT_QUEUE, (unsigned long)info);
if (rv)
goto out;
/* increment cursors */
- iso->first_packet = (iso->first_packet+1) % iso->buf_packets;
- iso->xmit_cycle = (iso->xmit_cycle+1) % 8000;
+ iso->first_packet = (iso->first_packet + 1) % iso->buf_packets;
+ iso->xmit_cycle = (iso->xmit_cycle + 1) % 8000;
iso->n_ready_packets--;
if (iso->prebuffer != 0) {
@@ -359,7 +373,7 @@ int hpsb_iso_xmit_queue_packet(struct hpsb_iso *iso, u32 offset, u16 len, u8 tag
}
}
-out:
+ out:
spin_unlock_irqrestore(&iso->lock, flags);
return rv;
}
@@ -369,7 +383,9 @@ int hpsb_iso_xmit_sync(struct hpsb_iso *iso)
if (iso->type != HPSB_ISO_XMIT)
return -EINVAL;
- return wait_event_interruptible(iso->waitq, hpsb_iso_n_ready(iso) == iso->buf_packets);
+ return wait_event_interruptible(iso->waitq,
+ hpsb_iso_n_ready(iso) ==
+ iso->buf_packets);
}
void hpsb_iso_packet_sent(struct hpsb_iso *iso, int cycle, int error)
@@ -396,7 +412,8 @@ void hpsb_iso_packet_sent(struct hpsb_iso *iso, int cycle, int error)
}
void hpsb_iso_packet_received(struct hpsb_iso *iso, u32 offset, u16 len,
- u16 total_len, u16 cycle, u8 channel, u8 tag, u8 sy)
+ u16 total_len, u16 cycle, u8 channel, u8 tag,
+ u8 sy)
{
unsigned long flags;
spin_lock_irqsave(&iso->lock, flags);
@@ -416,7 +433,7 @@ void hpsb_iso_packet_received(struct hpsb_iso *iso, u32 offset, u16 len,
info->tag = tag;
info->sy = sy;
- iso->pkt_dma = (iso->pkt_dma+1) % iso->buf_packets;
+ iso->pkt_dma = (iso->pkt_dma + 1) % iso->buf_packets;
iso->n_ready_packets++;
}
@@ -435,20 +452,21 @@ int hpsb_iso_recv_release_packets(struct hpsb_iso *iso, unsigned int n_packets)
spin_lock_irqsave(&iso->lock, flags);
for (i = 0; i < n_packets; i++) {
rv = iso->host->driver->isoctl(iso, RECV_RELEASE,
- (unsigned long) &iso->infos[iso->first_packet]);
+ (unsigned long)&iso->infos[iso->
+ first_packet]);
if (rv)
break;
- iso->first_packet = (iso->first_packet+1) % iso->buf_packets;
+ iso->first_packet = (iso->first_packet + 1) % iso->buf_packets;
iso->n_ready_packets--;
/* release memory from packets discarded when queue was full */
- if (iso->n_ready_packets == 0) { /* Release only after all prior packets handled */
+ if (iso->n_ready_packets == 0) { /* Release only after all prior packets handled */
if (iso->bytes_discarded != 0) {
struct hpsb_iso_packet_info inf;
inf.total_len = iso->bytes_discarded;
iso->host->driver->isoctl(iso, RECV_RELEASE,
- (unsigned long) &inf);
+ (unsigned long)&inf);
iso->bytes_discarded = 0;
}
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-15 23:46:04 +0000