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* Fixed init part of the controller

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22980 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Salvatore Benedetto 2007-11-22 23:25:37 +00:00
parent 3177ae7785
commit 6dfeac892b
1 changed files with 14 additions and 14 deletions
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26
src/add-ons/kernel/busses/usb/ohci.cpp
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@ -194,7 +194,8 @@ OHCI::OHCI(pci_info *info, Stack *stack)
uint32 control = _ReadReg(OHCI_CONTROL);
if (control & OHCI_INTERRUPT_ROUTING) {
TRACE(("usb_ohci: SMM is in control of the host controller\n"));
_WriteReg(OHCI_COMMAND_STATUS, OHCI_OWNERSHIP_CHANGE_REQUEST);
uint32 status = _ReadReg(OHCI_COMMAND_STATUS);
_WriteReg(OHCI_COMMAND_STATUS, status | OHCI_OWNERSHIP_CHANGE_REQUEST);
for (uint32 i = 0; i < 100 && (control & OHCI_INTERRUPT_ROUTING); i++) {
snooze(1000);
control = _ReadReg(OHCI_CONTROL);
@ -204,16 +205,10 @@ OHCI::OHCI(pci_info *info, Stack *stack)
_WriteReg(OHCI_CONTROL, OHCI_HC_FUNCTIONAL_STATE_RESET);
snooze(USB_DELAY_BUS_RESET);
}
} else if ((control & OHCI_HC_FUNCTIONAL_STATE_MASK)
!= OHCI_HC_FUNCTIONAL_STATE_RESET) {
TRACE(("usb_ohci: BIOS is in control of the host controller\n"));
if ((control & OHCI_HC_FUNCTIONAL_STATE_MASK)
!= OHCI_HC_FUNCTIONAL_STATE_OPERATIONAL) {
_WriteReg(OHCI_CONTROL, OHCI_HC_FUNCTIONAL_STATE_OPERATIONAL);
// TOFIX: shorter delay
} else {
TRACE(("usb_ohci: cold started\n"));
snooze(USB_DELAY_BUS_RESET);
}
}
// This reset should not be necessary according to the OHCI spec, but
// without it some controllers do not start.
@ -227,13 +222,15 @@ OHCI::OHCI(pci_info *info, Stack *stack)
// Disable interrupts right before we reset
cpu_status former = disable_interrupts();
_WriteReg(OHCI_COMMAND_STATUS, OHCI_HOST_CONTROLLER_RESET);
// Nominal time for a reset is 10 us
uint32 reset = 0;
for (uint32 i = 0; i < 10; i++) {
spin(10);
if (!(_ReadReg(OHCI_COMMAND_STATUS) & OHCI_HOST_CONTROLLER_RESET))
reset = _ReadReg(OHCI_COMMAND_STATUS) & OHCI_HOST_CONTROLLER_RESET;
if (!reset)
break;
}
if (_ReadReg(OHCI_COMMAND_STATUS) & OHCI_HOST_CONTROLLER_RESET) {
if (reset) {
TRACE_ERROR(("usb_ohci: Error resetting the host controller (timeout)\n"));
restore_interrupts(former);
return;
@ -380,9 +377,12 @@ OHCI::Start()
{
TRACE(("usb_ohci: starting OHCI Host Controller\n"));
if (!(_ReadReg(OHCI_CONTROL) & OHCI_HC_FUNCTIONAL_STATE_OPERATIONAL)) {
if ((_ReadReg(OHCI_CONTROL) & OHCI_HC_FUNCTIONAL_STATE_MASK)
!= OHCI_HC_FUNCTIONAL_STATE_OPERATIONAL) {
TRACE_ERROR(("usb_ohci: Controller not started!\n"));
return B_ERROR;
} else {
TRACE(("usb_ohci: Controller is OPERATIONAL!\n"));
}
fRootHubAddress = AllocateAddress();