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Changeset 6f04905 in mainline for uspace/lib/usb/src/usbdrv.c


Ignore:
Timestamp:
2010-12-04T16:58:31Z (11 years ago)
Author:
Vojtech Horky <vojtechhorky@…>
Branches:
lfn, master
Children:
ad104e0
Parents:
36c410e
Message:

Add address reservation to USBHC interface in DDF

Any USB driver that needs to assign new USB address shall ask its HC
for it. When using default USB address (address 0), it must inform
HC about it as HC is the only element able to provide serialization.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • uspace/lib/usb/src/usbdrv.c

    r36c410e r6f04905  
    100100}
    101101
     102/** Tell HC to reserve default address.
     103 *
     104 * @param phone Open phone to host controller driver.
     105 * @return Error code.
     106 */
     107int usb_drv_reserve_default_address(int phone)
     108{
     109        return async_req_0_0(phone, IPC_M_USBHC_RESERVE_DEFAULT_ADDRESS);
     110}
     111
     112/** Tell HC to release default address.
     113 *
     114 * @param phone Open phone to host controller driver.
     115 * @return Error code.
     116 */
     117int usb_drv_release_default_address(int phone)
     118{
     119        return async_req_0_0(phone, IPC_M_USBHC_RELEASE_DEFAULT_ADDRESS);
     120}
     121
     122/** Ask HC for free address assignment.
     123 *
     124 * @param phone Open phone to host controller driver.
     125 * @return Assigned USB address or negative error code.
     126 */
     127usb_address_t usb_drv_request_address(int phone)
     128{
     129        ipcarg_t address;
     130        int rc = async_req_0_1(phone, IPC_M_USBHC_REQUEST_ADDRESS, &address);
     131        if (rc != EOK) {
     132                return rc;
     133        } else {
     134                return (usb_address_t) address;
     135        }
     136}
     137
     138/** Inform HC about address release.
     139 *
     140 * @param phone Open phone to host controller driver.
     141 * @param address Address to be released.
     142 * @return Error code.
     143 */
     144int usb_drv_release_address(int phone, usb_address_t address)
     145{
     146        return async_req_1_0(phone, IPC_M_USBHC_RELEASE_ADDRESS, address);
     147}
     148
    102149/** Send data to HCD.
    103150 *
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