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path: root/drivers/usb/host/uhci-hcd.h
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* [PATCH] UHCI: improve debugging codeAlan Stern2006-03-20
| | | | | | | | | | | This patch (as626) makes some improvements to the debugging code in uhci-hcd. The main change is that now the code won't get compiled if CONFIG_USB_DEBUG isn't set. But there are other changes too, like adding a missing .owner field and printing a debugging dump if the controller dies. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] UHCI: remove main list of URBsAlan Stern2006-03-20
| | | | | | | | | | | | | | | | | | | As part of reorienting uhci-hcd away from URBs and toward endpoint queues, this patch (as625) eliminates the driver's main list of URBs. The list wsa used mainly in checking for URB completions; now the driver goes through the list of active endpoints and checks the members of the queues. As a side effect, I had to remove the code that looks for FSBR timeouts. For now, FSBR will remain on so long as any URBs on a full-speed control or bulk queue request it, even if the queue isn't advancing. A later patch can add more intelligent handling. This isn't a huge drawback; it's pretty rare for an URB to get stuck for more than a fraction of a second. (And it will help the people trying to use those insane HP USB devices.) Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] UHCI: use dummy TDsAlan Stern2006-03-20
| | | | | | | | | | | | | | | | | | This patch (as624) fixes a hardware race in uhci-hcd by adding a dummy TD to the end of each endpoint's queue. Without the dummy the host controller will effectively turn off the queue when it reaches the end, which happens asynchronously. This leads to a potential problem when new transfer descriptors are added to the end of the queue; they may never get used. With a dummy TD present the controller never turns off the queue; instead it just stops at the dummy and leaves the queue on but inactive. When new TDs are added to the end of the queue, the first new one gets written over the dummy. Thus there's never any question about whether the queue is running or needs to be restarted. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] UHCI: use one QH per endpoint, not per URBAlan Stern2006-03-20
| | | | | | | | | | | This patch (as623) changes the uhci-hcd driver to make it use one QH per device endpoint, instead of a QH per URB as it does now. Numerous areas of the code are affected by this. For example, the distinction between "queued" URBs and non-"queued" URBs no longer exists; all URBs belong to a queue and some just happen to be at the queue's head. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB: UHCI: edit some commentsAlan Stern2006-01-04
| | | | | | | | This patch (as615b) edits a large number of comments in the uhci-hcd code, mainly removing excess apostrophes. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB: UHCI: change uhci_explen macroAlan Stern2006-01-04
| | | | | | | | | | This patch (as616) changed the uhci_explen macro in uhci-hcd.h so that it now accepts the desired length, rather than length - 1 with special handling for 0. This also fixes a minor bug that would show up only when a driver submits a 0-length bulk URB. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB: UHCI: Spruce up some commentsAlan Stern2005-10-28
| | | | | | | | | | | | This patch (as570) changes some comments in the uhci-hcd header file and removes an unused declaration (something I forgot to erase in an earlier patch). Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> drivers/usb/host/uhci-hcd.h | 91 +++++++++++++++++++++++--------------------- 1 file changed, 49 insertions(+), 42 deletions(-)
* [PATCH] USB: UHCI: Split apart the physical and logical framelist arraysAlan Stern2005-10-28
| | | | | | | | | | | This patch (as563) splits the physical and logical framelist arrays in uhci-hcd into two separate pieces. This will allow slightly better memory utilization, since each piece is no larger than a single page whereas before the whole thing was a little bigger than two pages. It also allows the logical array to be allocated in non-DMA-coherent memory. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB: UHCI: Remove unused fields and unneeded tests for NULLAlan Stern2005-10-28
| | | | | | | | | | | | | This patch (as562) removes from the uhci-hcd driver a few unused fields and some unnecessary tests against NULL and assignments to NULL. In fact it wasn't until fairly recently that the tests became unnecessary. Before last winter it was possible that the driver's stop() routine would get called even if the start() routine returned an error, but now that can't happen. Hence there's no longer any need to check for partial initialization. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB UHCI: remove the FSBR kernel timerAlan Stern2005-09-12
| | | | | | | | | This patch (as558) removes from the UHCI driver a kernel timer used for checking Full Speed Bandwidth Reclamation (FSBR). The checking can be done during normal root-hub polling; it doesn't need a separate timer. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] UHCI: Don't store device pointer in QH or TDAlan Stern2005-06-27
| | | | | | | | | | | | | This patch simplifies the uhci-hcd driver by removing the device pointer currently stored in the QH and TD structures. Those pointers weren't being used for anything other than to increment the device's reference count, which is unnecessary since the device is used only when an URB completes, and outstanding URBs take their own reference to the device. As a useful side effect, this change means that uhci-hcd no longer needs to have the root-hub device available in the start routine. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB UHCI: Use root-hub IRQs while suspendedAlan Stern2005-06-27
| | | | | | | | | | | | | | This patch, which has as478b as a prerequisite, enables the uhci-hcd driver to take advantage of root-hub IRQs rather than polling during the time it is suspended. (Unfortunately the hardware doesn't support port-change interrupts while the controller is running.) It also turns off the driver's private timer while the controller is suspended, as it isn't needed then. The combined elimination of polling interrupts and timer interrupts ought to be enough to allow some systems to save a noticeable amount of power while they are otherwise idle. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB UHCI: Add root-hub suspend/resume supportAlan Stern2005-06-27
| | | | | | | | | | | | | | This patch implements (finally!) separate suspend and resume routines for the root hub and the controller in the UHCI driver. It also changes the sequence used to reset the controller during initial probing, so as to preserve the existing state during a Resume-From-Disk. (This new sequence is what should be used in the PCI Quirks code for early USB handoffs, incidentally.) Lastly it adds a notion of the controller being "inaccessible" while in a PCI low-power state, when normal I/O operations shouldn't be allowed. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] USB UHCI: Add root hub statesAlan Stern2005-06-27
| | | | | | | | | | | | | This patch starts making some serious changes to the UHCI driver. There's a set of private states for the root hub, and the internal routines for suspending and resuming work completely differently, with transitions based on the new states. Now the driver distinguishes between a privately auto-stopped state and a publicly suspended state, and it will properly suspend controllers with broken resume-detect interrupts instead of resetting them. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Linux-2.6.12-rc2Linus Torvalds2005-04-16
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!