diff options
| author | erictian <erictian@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-10-10 02:46:06 +0000 |
|---|---|---|
| committer | erictian <erictian@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-10-10 02:46:06 +0000 |
| commit | c843ef6796e39c50eb2352dd3cdf1a368d1a86a5 (patch) | |
| tree | b7c3d767f8cabbd32d5795444fc2f12a55762077 /MdeModulePkg/Bus/Usb | |
| parent | fa8801f5fc35146818f4445f00ca7b9db83e051e (diff) | |
| download | edk2-c843ef6796e39c50eb2352dd3cdf1a368d1a86a5.zip edk2-c843ef6796e39c50eb2352dd3cdf1a368d1a86a5.tar.gz edk2-c843ef6796e39c50eb2352dd3cdf1a368d1a86a5.tar.bz2 | |
MdeModulePkg/UsbBusDxe: Timing tunning for better boot performance.
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13809 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Bus/Usb')
| -rw-r--r-- | MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h | 10 | ||||
| -rw-r--r-- | MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.c | 7 | ||||
| -rw-r--r-- | MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.h | 4 |
3 files changed, 13 insertions, 8 deletions
diff --git a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h index ad2f952..094aea2 100644 --- a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h +++ b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBus.h @@ -60,10 +60,10 @@ typedef struct _USB_HUB_API USB_HUB_API; //
// Roothub and hub's polling interval, set by experience,
-// The unit of roothub is 100us, means 1s as interval, and
+// The unit of roothub is 100us, means 100ms as interval, and
// the unit of hub is 1ms, means 64ms as interval.
//
-#define USB_ROOTHUB_POLL_INTERVAL (1000 * 10000U)
+#define USB_ROOTHUB_POLL_INTERVAL (100 * 10000U)
#define USB_HUB_POLL_INTERVAL 64
//
@@ -75,13 +75,13 @@ typedef struct _USB_HUB_API USB_HUB_API; //
// Wait for port statue reg change, set by experience
//
-#define USB_WAIT_PORT_STS_CHANGE_STALL (5 * USB_BUS_1_MILLISECOND)
+#define USB_WAIT_PORT_STS_CHANGE_STALL (100)
//
// Wait for set device address, refers to specification
// [USB20-9.2.6.3, it says 2ms]
//
-#define USB_SET_DEVICE_ADDRESS_STALL (20 * USB_BUS_1_MILLISECOND)
+#define USB_SET_DEVICE_ADDRESS_STALL (2 * USB_BUS_1_MILLISECOND)
//
// Wait for retry max packet size, set by experience
@@ -99,7 +99,7 @@ typedef struct _USB_HUB_API USB_HUB_API; // [USB20-7.1.7.5, it says 10ms for hub and 50ms for
// root hub]
//
-#define USB_SET_PORT_RESET_STALL (20 * USB_BUS_1_MILLISECOND)
+#define USB_SET_PORT_RESET_STALL (10 * USB_BUS_1_MILLISECOND)
#define USB_SET_ROOT_PORT_RESET_STALL (50 * USB_BUS_1_MILLISECOND)
//
diff --git a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.c b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.c index 78af917..2d24bb4 100644 --- a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.c +++ b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.c @@ -763,7 +763,12 @@ UsbHubInit ( UsbHubCtrlSetPortFeature (HubIf->Device, Index, (EFI_USB_PORT_FEATURE) USB_HUB_PORT_POWER);
}
- gBS->Stall (HubDesc.PwrOn2PwrGood * USB_SET_PORT_POWER_STALL);
+ //
+ // Update for the usb hub has no power on delay requirement
+ //
+ if (HubDesc.PwrOn2PwrGood > 0) {
+ gBS->Stall (HubDesc.PwrOn2PwrGood * USB_SET_PORT_POWER_STALL);
+ }
UsbHubAckHubStatus (HubIf->Device);
}
diff --git a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.h b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.h index c7ee16d..4e5fcd8 100644 --- a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.h +++ b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbHub.h @@ -97,9 +97,9 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. //
// Host software return timeout if port status doesn't change
-// after 500ms(LOOP * STALL = 100 * 5ms), set by experience
+// after 500ms(LOOP * STALL = 5000 * 0.1ms), set by experience
//
-#define USB_WAIT_PORT_STS_CHANGE_LOOP 100
+#define USB_WAIT_PORT_STS_CHANGE_LOOP 5000
#pragma pack(1)
//
|