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xen-devel
Re: [Xen-devel] [PATCH] ahci with pm support
Yes it is.
K.
On 15/10/08 08:54, "Li, Xin B" <xin.b.li@xxxxxxxxx> wrote:
> Keir, I think we need this patch in Xen 3.3 tree too, and I checked the tree,
> found Xen 3.3 is sharing dom0 tree with unstable, right?
> Thanks!
> -Xin
>
>> -----Original Message-----
>> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
>> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Lu, Guanqun
>> Sent: Friday, October 10, 2008 9:33 AM
>> To: xen-devel@xxxxxxxxxxxxxxxxxxx
>> Subject: [Xen-devel] [PATCH] ahci with pm support
>>
>> This patch adds the power management support to ahci driver.
>> And it is necessary for S3.
>>
>> It is back-ported from linux kernel mainline tree.
>> More precisely, the patch is the diff between the commit
>> c1332875cbe0c148c7f200d4f9b36b64e34d9872 and tag v2.8.18.
>>
>> The authorship of the overall changes go to:
>>
>> =============
>> commit c1332875cbe0c148c7f200d4f9b36b64e34d9872
>> Author: Tejun Heo <htejun@xxxxxxxxx>
>> Date: Wed Jul 26 15:59:26 2006 +0900
>>
>> [PATCH] ahci: implement Power Management support
>>
>> Implement power management support.
>>
>> Original implementation is from Zhao, Forrest <forrest.zhao@xxxxxxxxx>
>>
>> Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
>> Signed-off-by: Zhao, Forrest <forrest.zhao@xxxxxxxxx>
>> Signed-off-by: Jeff Garzik <jeff@xxxxxxxxxx>
>>
>> commit d91542c11f3981768367815cf087ad36e792ea4a
>> Author: Tejun Heo <htejun@xxxxxxxxx>
>> Date: Wed Jul 26 15:59:26 2006 +0900
>>
>> [PATCH] ahci: separate out ahci_reset_controller() and
>> ahci_init_controller()
>>
>> Separate out ahci_reset_controller() and ahci_init_controller() from
>> ata_host_init(). These will be used by PM callbacks. This patch
>> doesn't introduce any behavior change.
>>
>> Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
>> Signed-off-by: Zhao, Forrest <forrest.zhao@xxxxxxxxx>
>> Signed-off-by: Jeff Garzik <jeff@xxxxxxxxxx>
>>
>> commit 0be0aa98985dfec42502c0d0af2a1baff9bdb19f
>> Author: Tejun Heo <htejun@xxxxxxxxx>
>> Date: Wed Jul 26 15:59:26 2006 +0900
>>
>> [PATCH] libata: improve driver initialization and deinitialization
>>
>> Implement ahci_[de]init_port() and use it during initialization and
>> de-initialization. ahci_[de]init_port() are supersets of what used to
>> be done during driver [de-]initialization. This patch makes the
>> following behavior changes.
>>
>> * Per-port IRQ mask is cleared on driver load as done in other
>> drivers. The mask will be configured properly during probe.
>>
>> * During init_one(), HOST_IRQ_STAT is cleared after masking port IRQs
>> such that there is no race window.
>>
>> * CMD_SPIN_UP is cleared during init_one() instead of being set. It
>> is set in port_start(). This is more consistent with overall
>> structure of initialization. Note that CMD_SPIN_UP simply controls
>> PHY activation.
>>
>> * Slumber and staggered spin-up are handled properly.
>>
>> * All init/deinit operations are done in step-by-step manner as
>> described in the spec instead of issued as single merged command.
>>
>> Original implementation is from Zhao, Forrest <forrest.zhao@xxxxxxxxx>
>>
>> Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
>> Signed-off-by: Zhao, Forrest <forrest.zhao@xxxxxxxxx>
>> Signed-off-by: Jeff Garzik <jeff@xxxxxxxxxx>
>>
>> commit 9f5920567bfabbd1be26112a31c44652b6587394
>> Author: Tejun Heo <htejun@xxxxxxxxx>
>> Date: Wed Jul 26 15:59:26 2006 +0900
>>
>> [PATCH] ahci: simplify ahci_start_engine()
>>
>> Simplify ahci_start_engine() by killing prerequisite condition checks.
>> Rationales are..
>>
>> * No user checks error return from ahci_start_engine()
>>
>> * Code flow guarantees the prerequisite conditions unless the
>> controller is malfunctioning. In such cases, the driver had chances
>> to learn about the problem _before_ calling this function.
>>
>> * Closely related to the above two, driver calls into this function
>> even when prerequisites fail hoping for the best.
>>
>> Basically, ahci_start_engine() should only do the operation itself.
>> It isn't the right place to check for prerequisites.
>>
>> Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
>> Signed-off-by: Zhao, Forrest <forrest.zhao@xxxxxxxxx>
>> Signed-off-by: Jeff Garzik <jeff@xxxxxxxxxx>
>>
>> commit d8fcd116d203dfe2f6c272d0cd67724b172f1bc2
>> Author: Tejun Heo <htejun@xxxxxxxxx>
>> Date: Wed Jul 26 15:59:25 2006 +0900
>>
>> [PATCH] ahci: cosmetic changes to ahci_start/stop_engine()
>>
>> * fascist-format comments according to comment style used in libata
>> core layer.
>>
>> * if() -> if ()
>>
>> Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
>> Signed-off-by: Zhao, Forrest <forrest.zhao@xxxxxxxxx>
>> Signed-off-by: Jeff Garzik <jeff@xxxxxxxxxx>
>>
>> commit 254950cd56fee220c9d548f3e57211b95976ba64
>> Author: Tejun Heo <htejun@xxxxxxxxx>
>> Date: Wed Jul 26 15:59:25 2006 +0900
>>
>> [PATCH] ahci: relocate several internal functions
>>
>> * move ahci_port_start/stop() below EH functions. This makes ahci
>> more consistent with other drivers and makes prototypes for
>> ahci_start/stop_engine() unnecessary.
>>
>> * swap positions between ahci_start_engine() and ahci_stop_engine()
>> for readability.
>>
>> Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
>> Signed-off-by: Zhao, Forrest <forrest.zhao@xxxxxxxxx>
>> Signed-off-by: Jeff Garzik <jeff@xxxxxxxxxx>
>>
>> commit 5457f2194ad198a0aba4190ec99a6a81846fdca5
>> Author: zhao, forrest <forrest.zhao@xxxxxxxxx>
>> Date: Thu Jul 13 13:38:32 2006 +0800
>>
>> [PATCH] The redefinition of ahci_start_engine() and ahci_stop_engine()
>>
>> - Make ahci_start_engine() and ahci_stop_engine() more consistent with
>> AHCI spec 1.1
>> - Change their input parameter from ap to port_mmio
>> - Update the existing users of ahci_start_engine() and ahci_stop_engine()
>>
>> Signed-off-by: Forrest Zhao <forrest.zhao@xxxxxxxxx>
>> Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
>> Signed-off-by: Jens Axboe <axboe@xxxxxxx>
>> Signed-off-by: Jeff Garzik <jeff@xxxxxxxxxx>
>> =============
>>
>> Some of the commits above may not be directly related to the ahci pm problem,
>> but they lay the basic ground for the final commit.
>>
>>
>> Signed-off-by: Guanqun Lu <guanqun.lu@xxxxxxxxx>
>>
>>
>> --
>> Guanqun
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