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ohci: Leave SMM or bios mode during init

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Ryzee119 2022-06-04 14:06:23 +09:30 committed by Ryan Wendland
parent c820c87692
commit d5e6d02817
1 changed files with 16 additions and 0 deletions
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16
src/portable/ohci/ohci.c
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@ -177,6 +177,22 @@ bool hcd_init(uint8_t rhport)
ohci_data.bulk_head_ed.skip = 1;
ohci_data.period_head_ed.skip = 1;
//If OHCI hardware is in SMM mode, gain ownership (Ref OHCI spec 5.1.1.3.3)
if (OHCI_REG->control_bit.interrupt_routing == 1)
{
OHCI_REG->command_status_bit.ownership_change_request = 1;
while (OHCI_REG->control_bit.interrupt_routing == 1) {}
}
//If OHCI hardware has come from warm-boot, signal resume (Ref OHCI spec 5.1.1.3.4)
else if (OHCI_REG->control_bit.hc_functional_state != OHCI_CONTROL_FUNCSTATE_RESET &&
OHCI_REG->control_bit.hc_functional_state != OHCI_CONTROL_FUNCSTATE_OPERATIONAL)
{
//Wait 20 ms. (Ref Usb spec 7.1.7.7)
OHCI_REG->control_bit.hc_functional_state = OHCI_CONTROL_FUNCSTATE_RESUME;
osal_task_delay(20);
}
// reset controller
OHCI_REG->command_status_bit.controller_reset = 1;
while( OHCI_REG->command_status_bit.controller_reset ) {} // should not take longer than 10 us