From: wangyijing@huawei•com (Yijing Wang)
To: linux-arm-kernel@lists•infradead.org
Subject: [RFC PATCH 00/11] Refactor MSI to support Non-PCI device
Date: Wed, 3 Sep 2014 15:15:11 +0800 [thread overview]
Message-ID: <5406BFFF.9000505@huawei.com> (raw)
In-Reply-To: <c3b2bd89ef3d462cb302f6ede56a0d44@BLUPR03MB566.namprd03.prod.outlook.com>
>> Provide the private MSI setup functions in bus-driver layer can't apply to all
>> Non-PCI MSI devices, because we can not guarantee Non-PCI MSI devices are always
>> on a bus. The existing HPET, DMAR device both have no bus bind.
>
> Yes, that's why I was not sure of bus-driver or device-driver model.
>
>> I'm working on a
>> new MSI setup framework, as you mentioned before, in device-driver model.
>>
>> I abstracted a new virtual device (called struct msi_dev), this msi_dev will
>> manage all MSI info,
>
> Will this "struct msi_dev" will be part of "struct device"?
>
>> and a new bus named msi_bus, also introduced a new driver
>> msi_driver, msi_bus is responsible for binding msi_dev and msi_driver.
>> All MSI devices will be classified into different MSI device types, like
>> MSI_TYPE_PCI, MSI_TYPE_HPET, MSI_TYPE_DMAR, etc..
>>
>> Each MSI type device should provide a private struct msi_driver. msi_driver
>> should contain the type specific MSI ops functions to help setup and enable MSI
>> device, request MSI irq.
>>
>> I almost finish the first draft, and will post out next week in plan :)
>
> Will be looking forward to next version.
Hi Bharat, I'm sorry I had to delay to send out the new version :(. I found some risks in the
new MSI framework, i.e. DMAR MSI initialized the MSI before the linux device-driver tree be built.
And we also found some problems during test. So I think I need more time to review and test.
Thanks!
Yijing.
>
> Thanks
> -Bharat
>
>>
>>
>> Thanks!
>> Yijing.
>>
>>>
>>> Thanks
>>> -Bharat
>>>
>>>>
>>>> My patchset is just a RFC draft, I will update it later, all we want
>>>> to do is make kernel support Non-PCI MSI devices.
>>>>
>>>> Thanks!
>>>> Yijing.
>>>>
>>>>
>>>>>
>>>>> Thanks
>>>>> Arnab
>>>>> --
>>>>> To unsubscribe from this list: send the line "unsubscribe
>>>>> linux-kernel" in the body of a message to majordomo at vger.kernel.org
>>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>>>> Please read the FAQ at http://www.tux.org/lkml/
>>>>>
>>>>> .
>>>>>
>>>>
>>>>
>>>> --
>>>> Thanks!
>>>> Yijing
>>>>
>>>> --
>>>> To unsubscribe from this list: send the line "unsubscribe linux-pci"
>>>> in the body of a message to majordomo at vger.kernel.org More majordomo
>>>> info at http://vger.kernel.org/majordomo-info.html
>>>
>>> .
>>>
>>
>>
>> --
>> Thanks!
>> Yijing
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body
>> of a message to majordomo at vger.kernel.org More majordomo info at
>> http://vger.kernel.org/majordomo-info.html
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
> .
>
--
Thanks!
Yijing
prev parent reply other threads:[~2014-09-03 7:15 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-26 3:08 [RFC PATCH 00/11] Refactor MSI to support Non-PCI device Yijing Wang
2014-07-26 3:08 ` [RFC PATCH 01/11] PCI/MSI: Use pci_dev->msi_cap instead of msi_desc->msi_attrib.pos Yijing Wang
2014-07-26 3:08 ` [RFC PATCH 02/11] PCI/MSI: Use new MSI type macro instead of PCI MSI flags Yijing Wang
2014-07-26 3:08 ` [RFC PATCH 03/11] PCI/MSI: Refactor pci_dev_msi_enabled() Yijing Wang
2014-08-05 22:35 ` Stuart Yoder
2014-08-06 1:23 ` Yijing Wang
2014-08-20 5:57 ` Bharat.Bhushan at freescale.com
2014-08-20 6:30 ` Yijing Wang
2014-07-26 3:08 ` [RFC PATCH 04/11] PCI/MSI: Move MSIX table address mapping out of msix_capability_init Yijing Wang
2014-07-26 3:08 ` [RFC PATCH 05/11] PCI/MSI: Move populate_msi_sysfs() out of msi_capability_init() Yijing Wang
2014-07-26 3:08 ` [RFC PATCH 06/11] PCI/MSI: Save MSI irq in PCI MSI layer Yijing Wang
2014-07-26 3:08 ` [RFC PATCH 07/11] PCI/MSI: Mask MSI-X entry in msix_setup_entries() Yijing Wang
2014-07-26 3:08 ` [RFC PATCH 08/11] PCI/MSI: Introduce new struct msi_irqs and struct msi_ops Yijing Wang
2014-07-26 3:08 ` [RFC PATCH 09/11] PCI/MSI: refactor PCI MSI driver Yijing Wang
2014-08-20 6:06 ` Bharat.Bhushan at freescale.com
2014-08-20 6:34 ` Yijing Wang
2014-07-26 3:08 ` [RFC PATCH 10/11] PCI/MSI: Split the generic MSI code into new file Yijing Wang
2014-08-20 6:18 ` Bharat.Bhushan at freescale.com
2014-08-20 6:43 ` Yijing Wang
2014-07-26 3:08 ` [RFC PATCH 11/11] x86/MSI: Refactor x86 MSI code Yijing Wang
2014-08-20 6:20 ` Bharat.Bhushan at freescale.com
2014-08-20 7:01 ` Yijing Wang
2014-07-29 14:08 ` [RFC PATCH 00/11] Refactor MSI to support Non-PCI device Arnd Bergmann
2014-07-30 2:45 ` Yijing Wang
2014-07-30 6:47 ` Jiang Liu
2014-07-30 7:20 ` Yijing Wang
2014-08-01 13:16 ` Arnd Bergmann
2014-08-04 3:32 ` Yijing Wang
2014-08-04 14:45 ` Arnd Bergmann
2014-08-05 2:20 ` Yijing Wang
2014-08-01 13:52 ` Arnd Bergmann
2014-08-04 6:43 ` Yijing Wang
2014-08-04 14:59 ` Arnd Bergmann
2014-08-05 2:12 ` Yijing Wang
2014-08-01 10:27 ` arnab.basu at freescale.com
2014-08-04 3:03 ` Yijing Wang
2014-08-20 5:44 ` Bharat.Bhushan at freescale.com
2014-08-20 6:28 ` Yijing Wang
2014-08-20 7:41 ` Bharat.Bhushan at freescale.com
2014-08-20 7:55 ` Yijing Wang
2014-09-03 7:15 ` Yijing Wang [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5406BFFF.9000505@huawei.com \
--to=wangyijing@huawei$(echo .)com \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox