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usb-host: add property to turn off pipelining

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Add a property to usb-host to disable the bulk endpoint pipelining.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-03-22 15:28:45 +01:00
parent 19b89252a3
commit 39c2057700
1 changed files with 9 additions and 1 deletions
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10
hw/usb/host-linux.c
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@ -94,6 +94,10 @@ struct USBAutoFilter {
uint32_t product_id;
};
enum USBHostDeviceOptions {
USB_HOST_OPT_PIPELINE,
};
typedef struct USBHostDevice {
USBDevice dev;
int fd;
@ -104,6 +108,7 @@ typedef struct USBHostDevice {
int descr_len;
int closing;
uint32_t iso_urb_count;
uint32_t options;
Notifier exit;
struct endp_data ep_in[USB_MAX_ENDPOINTS];
@ -1203,7 +1208,8 @@ static int usb_linux_update_endp_table(USBHostDevice *s)
USB_ENDPOINT_XFER_INVALID);
usb_ep_set_type(&s->dev, pid, ep, type);
usb_ep_set_ifnum(&s->dev, pid, ep, interface);
if (type == USB_ENDPOINT_XFER_BULK) {
if ((s->options & (1 << USB_HOST_OPT_PIPELINE)) &&
(type == USB_ENDPOINT_XFER_BULK)) {
usb_ep_set_pipeline(&s->dev, pid, ep, true);
}
@ -1431,6 +1437,8 @@ static Property usb_host_dev_properties[] = {
DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0),
DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
DEFINE_PROP_INT32("bootindex", USBHostDevice, bootindex, -1),
DEFINE_PROP_BIT("pipeline", USBHostDevice, options,
USB_HOST_OPT_PIPELINE, true),
DEFINE_PROP_END_OF_LIST(),
};