1) remove wrong global variable usage because it will bring data corrupt if there are multiple XHCI host controllers.
2) coding style clean up. Signed-off-by: erictian Reviewed-by: ydong10 Reviewed-by: jshi19 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12351 6f19259b-4bc3-4df7-8a09-765794883524
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@@ -45,8 +45,6 @@ EFI_DRIVER_BINDING_PROTOCOL mUsbBusDriverBinding = {
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NULL
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};
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UINT16 mMaxUsbDeviceNum = USB_MAX_DEVICES;
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/**
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USB_IO function to execute a control transfer. This
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function will execute the USB transfer. If transfer
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@@ -112,7 +110,7 @@ UsbIoControlTransfer (
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// Clear TT buffer when CTRL/BULK split transaction failes
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// Clear the TRANSLATOR TT buffer, not parent's buffer
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//
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ASSERT (Dev->Translator.TranslatorHubAddress < mMaxUsbDeviceNum);
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ASSERT (Dev->Translator.TranslatorHubAddress < Dev->Bus->MaxDevices);
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if (Dev->Translator.TranslatorHubAddress != 0) {
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UsbHubCtrlClearTTBuffer (
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Dev->Bus->Devices[Dev->Translator.TranslatorHubAddress],
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@@ -285,7 +283,7 @@ UsbIoBulkTransfer (
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// Clear TT buffer when CTRL/BULK split transaction failes.
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// Clear the TRANSLATOR TT buffer, not parent's buffer
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//
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ASSERT (Dev->Translator.TranslatorHubAddress < mMaxUsbDeviceNum);
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ASSERT (Dev->Translator.TranslatorHubAddress < Dev->Bus->MaxDevices);
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if (Dev->Translator.TranslatorHubAddress != 0) {
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UsbHubCtrlClearTTBuffer (
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Dev->Bus->Devices[Dev->Translator.TranslatorHubAddress],
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@@ -913,8 +911,9 @@ UsbBusBuildProtocol (
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return EFI_OUT_OF_RESOURCES;
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}
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UsbBus->Signature = USB_BUS_SIGNATURE;
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UsbBus->HostHandle = Controller;
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UsbBus->Signature = USB_BUS_SIGNATURE;
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UsbBus->HostHandle = Controller;
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UsbBus->MaxDevices = USB_MAX_DEVICES;
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Status = gBS->OpenProtocol (
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Controller,
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@@ -966,12 +965,12 @@ UsbBusBuildProtocol (
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}
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if (!EFI_ERROR (Status)) {
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//
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// The EFI_USB2_HC_PROTOCOL is produced for XHCI support.
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// Then its max supported devices are 256. Otherwise it's 128.
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//
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if (UsbBus->Usb2Hc->MajorRevision == 0x3) {
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//
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// The EFI_USB2_HC_PROTOCOL is produced for XHCI support.
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// Then its max supported devices are 256.
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//
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mMaxUsbDeviceNum = 256;
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UsbBus->MaxDevices = 256;
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}
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}
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@@ -1444,7 +1443,8 @@ UsbBusControllerDriverStop (
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mUsbRootHubApi.Release (RootIf);
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for (Index = 1; Index < mMaxUsbDeviceNum; Index++) {
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ASSERT (Bus->MaxDevices <= 256);
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for (Index = 1; Index < Bus->MaxDevices; Index++) {
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if (Bus->Devices[Index] != NULL) {
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UsbRemoveDevice (Bus->Devices[Index]);
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}
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@@ -246,6 +246,12 @@ struct _USB_BUS {
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EFI_USB2_HC_PROTOCOL *Usb2Hc;
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EFI_USB_HC_PROTOCOL *UsbHc;
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//
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// Recorded the max supported usb devices.
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// XHCI can support up to 255 devices.
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// EHCI/UHCI/OHCI supports up to 127 devices.
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//
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UINT32 MaxDevices;
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//
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// An array of device that is on the bus. Devices[0] is
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// for root hub. Device with address i is at Devices[i].
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@@ -747,7 +753,6 @@ UsbBusControllerDriverStop (
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IN EFI_HANDLE *ChildHandleBuffer
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);
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extern UINT16 mMaxUsbDeviceNum;
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extern EFI_USB_IO_PROTOCOL mUsbIoProtocol;
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extern EFI_DRIVER_BINDING_PROTOCOL mUsbBusDriverBinding;
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extern EFI_COMPONENT_NAME_PROTOCOL mUsbBusComponentName;
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@@ -548,7 +548,7 @@ UsbRemoveDevice (
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// Remove all the devices on its downstream ports. Search from devices[1].
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// Devices[0] is the root hub.
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//
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for (Index = 1; Index < mMaxUsbDeviceNum; Index++) {
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for (Index = 1; Index < Bus->MaxDevices; Index++) {
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Child = Bus->Devices[Index];
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if ((Child == NULL) || (Child->ParentAddr != Device->Address)) {
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@@ -567,7 +567,7 @@ UsbRemoveDevice (
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DEBUG (( EFI_D_INFO, "UsbRemoveDevice: device %d removed\n", Device->Address));
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ASSERT (Device->Address < mMaxUsbDeviceNum);
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ASSERT (Device->Address < Bus->MaxDevices);
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Bus->Devices[Device->Address] = NULL;
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UsbFreeDevice (Device);
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@@ -599,7 +599,7 @@ UsbFindChild (
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//
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// Start checking from device 1, device 0 is the root hub
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//
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for (Index = 1; Index < mMaxUsbDeviceNum; Index++) {
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for (Index = 1; Index < Bus->MaxDevices; Index++) {
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Device = Bus->Devices[Index];
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if ((Device != NULL) && (Device->ParentAddr == HubIf->Device->Address) &&
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@@ -639,11 +639,11 @@ UsbEnumerateNewDev (
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UINT8 Config;
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EFI_STATUS Status;
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Address = mMaxUsbDeviceNum;
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Parent = HubIf->Device;
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Bus = Parent->Bus;
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HubApi = HubIf->HubApi;
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HubApi = HubIf->HubApi;
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Address = Bus->MaxDevices;
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gBS->Stall (USB_WAIT_PORT_STABLE_STALL);
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//
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@@ -731,13 +731,14 @@ UsbEnumerateNewDev (
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// status stage with default address, then switches to new address.
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// ADDRESS state. Address zero is reserved for root hub.
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//
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for (Address = 1; Address < mMaxUsbDeviceNum; Address++) {
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ASSERT (Bus->MaxDevices <= 256);
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for (Address = 1; Address < Bus->MaxDevices; Address++) {
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if (Bus->Devices[Address] == NULL) {
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break;
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}
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}
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if (Address == mMaxUsbDeviceNum) {
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if (Address >= Bus->MaxDevices) {
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DEBUG ((EFI_D_ERROR, "UsbEnumerateNewDev: address pool is full for port %d\n", Port));
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Status = EFI_ACCESS_DENIED;
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@@ -808,7 +809,7 @@ UsbEnumerateNewDev (
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return EFI_SUCCESS;
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ON_ERROR:
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if (Address != mMaxUsbDeviceNum) {
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if (Address != Bus->MaxDevices) {
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Bus->Devices[Address] = NULL;
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}
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