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firewire: Implement sync and tag matching for isochronous receive. 

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
hifive-unleashed-5.1
Kristian Høgsberg 2007-02-16 17:34:51 -05:00 committed by Stefan Richter
parent 21efb3cfc6
commit 98b6cbe83b
5 changed files with 64 additions and 7 deletions
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10
drivers/firewire/fw-device-cdev.c
View File

@ -416,6 +416,12 @@ static int ioctl_create_iso_context(struct client *client, void __user *arg)
if (request.channel > 63)
return -EINVAL;
if (request.sync > 15)
return -EINVAL;
if (request.tags == 0 || request.tags > 15)
return -EINVAL;
if (request.speed > SCODE_3200)
return -EINVAL;
@ -424,6 +430,8 @@ static int ioctl_create_iso_context(struct client *client, void __user *arg)
request.channel,
request.speed,
request.header_size,
request.sync,
request.tags,
iso_callback, client);
if (IS_ERR(client->iso_context))
return PTR_ERR(client->iso_context);
@ -495,7 +503,7 @@ static int ioctl_queue_iso(struct client *client, void __user *arg)
if (__copy_from_user
(u.packet.header, p->header, header_length))
return -EFAULT;
if (u.packet.skip &&
if (u.packet.skip && ctx->type == FW_ISO_CONTEXT_TRANSMIT &&
u.packet.header_length + u.packet.payload_length > 0)
return -EINVAL;
if (payload + u.packet.payload_length > payload_end)

8
drivers/firewire/fw-device-cdev.h
View File

@ -131,11 +131,19 @@ struct fw_cdev_allocate {
#define FW_CDEV_ISO_CONTEXT_TRANSMIT 0
#define FW_CDEV_ISO_CONTEXT_RECEIVE 1
#define FW_CDEV_ISO_CONTEXT_MATCH_TAG0 1
#define FW_CDEV_ISO_CONTEXT_MATCH_TAG1 2
#define FW_CDEV_ISO_CONTEXT_MATCH_TAG2 4
#define FW_CDEV_ISO_CONTEXT_MATCH_TAG3 8
#define FW_CDEV_ISO_CONTEXT_MATCH_ALL_TAGS 15
struct fw_cdev_create_iso_context {
__u32 type;
__u32 header_size;
__u32 channel;
__u32 speed;
__u32 sync;
__u32 tags;
};
struct fw_cdev_iso_packet {

8
drivers/firewire/fw-iso.c
View File

@ -107,12 +107,14 @@ void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer,
struct fw_iso_context *
fw_iso_context_create(struct fw_card *card, int type,
int channel, int speed, size_t header_size,
int channel, int speed,
int sync, int tags, size_t header_size,
fw_iso_callback_t callback, void *callback_data)
{
struct fw_iso_context *ctx;
ctx = card->driver->allocate_iso_context(card, type, header_size);
ctx = card->driver->allocate_iso_context(card, type,
sync, tags, header_size);
if (IS_ERR(ctx))
return ctx;
@ -120,6 +122,8 @@ fw_iso_context_create(struct fw_card *card, int type,
ctx->type = type;
ctx->channel = channel;
ctx->speed = speed;
ctx->sync = sync;
ctx->tags = tags;
ctx->header_size = header_size;
ctx->callback = callback;
ctx->callback_data = callback_data;

32
drivers/firewire/fw-ohci.c
View File

@ -1337,7 +1337,8 @@ static int handle_it_packet(struct context *context,
}
static struct fw_iso_context *
ohci_allocate_iso_context(struct fw_card *card, int type, size_t header_size)
ohci_allocate_iso_context(struct fw_card *card, int type,
int sync, int tags, size_t header_size)
{
struct fw_ohci *ohci = fw_ohci(card);
struct iso_context *ctx, *list;
@ -1427,7 +1428,8 @@ static int ohci_start_iso(struct fw_iso_context *base, s32 cycle)
reg_write(ohci, OHCI1394_IsoRecvIntEventClear, 1 << index);
reg_write(ohci, OHCI1394_IsoRecvIntMaskSet, 1 << index);
reg_write(ohci, context_match(ctx->context.regs),
0xf0000000 | ctx->base.channel);
(ctx->base.tags << 28) |
(ctx->base.sync << 8) | ctx->base.channel);
context_run(&ctx->context, mode);
}
@ -1573,6 +1575,26 @@ ohci_queue_iso_transmit(struct fw_iso_context *base,
return 0;
}
static int
setup_wait_descriptor(struct context *ctx)
{
struct descriptor *d;
dma_addr_t d_bus;
d = context_get_descriptors(ctx, 1, &d_bus);
if (d == NULL)
return -ENOMEM;
d->control = cpu_to_le16(descriptor_input_more |
descriptor_status |
descriptor_branch_always |
descriptor_wait);
context_append(ctx, d, 1, 0);
return 0;
}
static int
ohci_queue_iso_receive_dualbuffer(struct fw_iso_context *base,
@ -1591,6 +1613,9 @@ ohci_queue_iso_receive_dualbuffer(struct fw_iso_context *base,
/* FIXME: Cycle lost behavior should be configurable: lose
* packet, retransmit or terminate.. */
if (packet->skip && setup_wait_descriptor(&ctx->context) < 0)
return -ENOMEM;
p = packet;
z = 2;
@ -1655,6 +1680,9 @@ ohci_queue_iso_receive_bufferfill(struct fw_iso_context *base,
offset = payload & ~PAGE_MASK;
rest = packet->payload_length;
if (packet->skip && setup_wait_descriptor(&ctx->context) < 0)
return -ENOMEM;
while (rest > 0) {
d = context_get_descriptors(&ctx->context, 1, &d_bus);
if (d == NULL)

13
drivers/firewire/fw-transaction.h
View File

@ -332,6 +332,12 @@ struct fw_iso_packet {
#define FW_ISO_CONTEXT_TRANSMIT 0
#define FW_ISO_CONTEXT_RECEIVE 1
#define FW_ISO_CONTEXT_MATCH_TAG0 1
#define FW_ISO_CONTEXT_MATCH_TAG1 2
#define FW_ISO_CONTEXT_MATCH_TAG2 4
#define FW_ISO_CONTEXT_MATCH_TAG3 8
#define FW_ISO_CONTEXT_MATCH_ALL_TAGS 15
struct fw_iso_context;
typedef void (*fw_iso_callback_t) (struct fw_iso_context *context,
@ -357,6 +363,8 @@ struct fw_iso_context {
int type;
int channel;
int speed;
int sync;
int tags;
size_t header_size;
fw_iso_callback_t callback;
void *callback_data;
@ -374,7 +382,8 @@ fw_iso_buffer_destroy(struct fw_iso_buffer *buffer, struct fw_card *card);
struct fw_iso_context *
fw_iso_context_create(struct fw_card *card, int type,
int channel, int speed, size_t header_size,
int channel, int speed,
int sync, int tags, size_t header_size,
fw_iso_callback_t callback, void *callback_data);
void
@ -425,7 +434,7 @@ struct fw_card_driver {
int node_id, int generation);
struct fw_iso_context *
(*allocate_iso_context)(struct fw_card *card,
(*allocate_iso_context)(struct fw_card *card, int sync, int tags,
int type, size_t header_size);
void (*free_iso_context)(struct fw_iso_context *ctx);