diff options
Diffstat (limited to 'drivers/usb/host/ohci-hcd.c')
| -rw-r--r-- | drivers/usb/host/ohci-hcd.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index 17f3ac66be..691ed1c900 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -1622,6 +1622,91 @@ static int submit_common_msg(ohci_t *ohci, struct usb_device *dev, return 0; } +#define MAX_INT_QUEUESIZE 8 + +struct int_queue { + int queuesize; + int curr_urb; + urb_priv_t *urb[MAX_INT_QUEUESIZE]; +}; + +static struct int_queue *_ohci_create_int_queue(ohci_t *ohci, + struct usb_device *udev, unsigned long pipe, int queuesize, + int elementsize, void *buffer, int interval) +{ + struct int_queue *queue; + ohci_dev_t *ohci_dev; + int i; + + if (queuesize > MAX_INT_QUEUESIZE) + return NULL; + + ohci_dev = ohci_get_ohci_dev(ohci, udev->devnum, 1); + if (!ohci_dev) + return NULL; + + queue = malloc(sizeof(*queue)); + if (!queue) { + printf("ohci: Error out of memory allocating int queue\n"); + return NULL; + } + + for (i = 0; i < queuesize; i++) { + queue->urb[i] = ohci_alloc_urb(udev, pipe, + buffer + i * elementsize, + elementsize, interval); + if (!queue->urb[i]) + break; + + if (sohci_submit_job(ohci, ohci_dev, queue->urb[i], NULL)) { + printf("ohci: Error submitting int queue job\n"); + urb_free_priv(queue->urb[i]); + break; + } + } + if (i == 0) { + /* We did not succeed in submitting even 1 urb */ + free(queue); + return NULL; + } + + queue->queuesize = i; + queue->curr_urb = 0; + + return queue; +} + +static void *_ohci_poll_int_queue(ohci_t *ohci, struct usb_device *udev, + struct int_queue *queue) +{ + if (queue->curr_urb == queue->queuesize) + return NULL; /* Queue depleted */ + + if (hc_interrupt(ohci) < 0) + return NULL; + + if (queue->urb[queue->curr_urb]->finished) { + void *ret = queue->urb[queue->curr_urb]->transfer_buffer; + queue->curr_urb++; + return ret; + } + + return NULL; +} + +static int _ohci_destroy_int_queue(ohci_t *ohci, struct usb_device *dev, + struct int_queue *queue) +{ + int i; + + for (i = 0; i < queue->queuesize; i++) + urb_free_priv(queue->urb[i]); + + free(queue); + + return 0; +} + #ifndef CONFIG_DM_USB /* submit routines called from usb.c */ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer, @@ -1639,6 +1724,24 @@ int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer, return submit_common_msg(&gohci, dev, pipe, buffer, transfer_len, NULL, interval); } + +struct int_queue *create_int_queue(struct usb_device *dev, + unsigned long pipe, int queuesize, int elementsize, + void *buffer, int interval) +{ + return _ohci_create_int_queue(&gohci, dev, pipe, queuesize, + elementsize, buffer, interval); +} + +void *poll_int_queue(struct usb_device *dev, struct int_queue *queue) +{ + return _ohci_poll_int_queue(&gohci, dev, queue); +} + +int destroy_int_queue(struct usb_device *dev, struct int_queue *queue) +{ + return _ohci_destroy_int_queue(&gohci, dev, queue); +} #endif static int _ohci_submit_control_msg(ohci_t *ohci, struct usb_device *dev, @@ -2072,6 +2175,32 @@ static int ohci_submit_int_msg(struct udevice *dev, struct usb_device *udev, NULL, interval); } +static struct int_queue *ohci_create_int_queue(struct udevice *dev, + struct usb_device *udev, unsigned long pipe, int queuesize, + int elementsize, void *buffer, int interval) +{ + ohci_t *ohci = dev_get_priv(usb_get_bus(dev)); + + return _ohci_create_int_queue(ohci, udev, pipe, queuesize, elementsize, + buffer, interval); +} + +static void *ohci_poll_int_queue(struct udevice *dev, struct usb_device *udev, + struct int_queue *queue) +{ + ohci_t *ohci = dev_get_priv(usb_get_bus(dev)); + + return _ohci_poll_int_queue(ohci, udev, queue); +} + +static int ohci_destroy_int_queue(struct udevice *dev, struct usb_device *udev, + struct int_queue *queue) +{ + ohci_t *ohci = dev_get_priv(usb_get_bus(dev)); + + return _ohci_destroy_int_queue(ohci, udev, queue); +} + int ohci_register(struct udevice *dev, struct ohci_regs *regs) { struct usb_bus_priv *priv = dev_get_uclass_priv(dev); @@ -2114,6 +2243,9 @@ struct dm_usb_ops ohci_usb_ops = { .control = ohci_submit_control_msg, .bulk = ohci_submit_bulk_msg, .interrupt = ohci_submit_int_msg, + .create_int_queue = ohci_create_int_queue, + .poll_int_queue = ohci_poll_int_queue, + .destroy_int_queue = ohci_destroy_int_queue, }; #endif |