From: Marc Zyngier <marc.zyngier@arm.com>
To: "Yun Wu \(Abel\)" <wuyun.wu@huawei.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
Bjorn Helgaas <bhelgaas@google.com>,
"grant.likely\@linaro.org" <grant.likely@linaro.org>,
Yingjoe Chen <yingjoe.chen@mediatek.com>,
Yijing Wang <wangyijing@huawei.com>
Subject: Re: [patch 08/16] genirq: Introduce callback irq_chip.irq_write_msi_msg
Date: Wed, 19 Nov 2014 08:55:21 +0000 [thread overview]
Message-ID: <87mw7nd0xy.fsf@approximate.cambridge.arm.com> (raw)
In-Reply-To: <546C10A1.9040704@huawei.com> (Yun Wu's message of "Wed, 19 Nov 2014 03:38:09 +0000")
On Wed, Nov 19 2014 at 3:38:09 am GMT, "Yun Wu (Abel)" <wuyun.wu@huawei.com> wrote:
> On 2014/11/19 1:14, Marc Zyngier wrote:
>
>> On Tue, Nov 18 2014 at 2:46:02 pm GMT, "Yun Wu (Abel)" <wuyun.wu@huawei.com> wrote:
> [...]
>>> IIUC, Marc's patch now only supports PCI MSI/MSI-X...
>>
>> Indeed, and the current solution makes is relatively easy to plug in
>> non-PCI MSI. Just don't plug the ITS into the *PCI* MSI framework when
>> you encounter such a thing.
>>
>
> I am looking forward to that. :)
I really don't.
> I guess the main reason you haven't plugged in non-PCI MSI is the way
> of obtaining device ids used in searching DT table.
That, and also:
- No way to carve out LPI ranges for non-PCI allocations, should some
ITS mandate specific ranges
- No description of how to program the generating device, it required
- No platform with such requirements aiming for upstream support
To put it mildly, non-PCI support on the ITS is a rather long way
away, and it has nothing to do with the code. It has everything to do
with specifying what we want to support, and how we describe it in
DT. Until then, not much is going to happen.
Thanks,
M.
--
Jazz is not dead. It just smells funny.
next prev parent reply other threads:[~2014-11-19 8:55 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-12 13:42 [patch 00/16] genirq: Hierarchical irq domains and generic MSI interrupt code Thomas Gleixner
2014-11-12 13:42 ` [patch 01/16] irqdomain: Introduce new interfaces to support hierarchy irqdomains Thomas Gleixner
2014-11-18 9:24 ` Yun Wu (Abel)
2014-11-18 9:54 ` Thomas Gleixner
2014-11-18 11:48 ` Yun Wu (Abel)
2014-11-24 12:33 ` Yun Wu (Abel)
2014-11-24 13:13 ` Thomas Gleixner
2014-11-24 14:01 ` Yun Wu (Abel)
2014-11-24 14:11 ` Jiang Liu
2014-11-24 14:19 ` Yun Wu (Abel)
2014-11-24 14:33 ` Jiang Liu
2014-11-24 14:46 ` Yun Wu (Abel)
2014-11-24 14:32 ` Thomas Gleixner
2014-11-24 14:45 ` Yun Wu (Abel)
2014-11-12 13:42 ` [patch 02/16] irqdomain: Do irq_find_mapping and set_type for hierarchy irqdomain in case OF Thomas Gleixner
2014-11-12 13:42 ` [patch 03/16] genirq: Introduce helper functions to support stacked irq_chip Thomas Gleixner
2014-11-12 13:42 ` [patch 04/16] genirq: Introduce irq_chip.irq_compose_msi_msg() to support stacked irqchip Thomas Gleixner
2014-11-18 9:26 ` Yun Wu (Abel)
2014-11-18 10:02 ` Thomas Gleixner
2014-11-18 11:47 ` Yun Wu (Abel)
2014-11-18 12:43 ` Jiang Liu
2014-11-18 13:16 ` Yun Wu (Abel)
2014-11-18 13:25 ` Jiang Liu
2014-11-18 13:48 ` Yun Wu (Abel)
2014-11-18 13:55 ` Jiang Liu
2014-11-18 14:03 ` Yun Wu (Abel)
2014-11-18 14:06 ` Jiang Liu
2014-11-12 13:42 ` [patch 05/16] genirq: Add IRQ_SET_MASK_OK_DONE " Thomas Gleixner
2014-11-12 13:43 ` [patch 06/16] genirq: Split out flow handler typedefs into seperate header file Thomas Gleixner
2014-11-12 13:43 ` [patch 07/16] genirq: Introduce helper irq_domain_set_info() to reduce duplicated code Thomas Gleixner
2014-11-13 9:57 ` Yingjoe Chen
2014-11-13 10:00 ` Jiang Liu
2014-11-13 10:48 ` Marc Zyngier
2014-11-14 15:31 ` Marc Zyngier
2014-11-14 15:41 ` Jiang Liu
2014-11-14 17:35 ` Marc Zyngier
2014-11-15 1:26 ` Jiang Liu
2014-11-18 9:26 ` Yun Wu (Abel)
2014-11-18 10:03 ` Thomas Gleixner
2014-11-18 11:47 ` Yun Wu (Abel)
2014-11-18 12:38 ` Jiang Liu
2014-11-18 13:28 ` Yun Wu (Abel)
2014-11-18 13:37 ` Jiang Liu
2014-11-12 13:43 ` [patch 08/16] genirq: Introduce callback irq_chip.irq_write_msi_msg Thomas Gleixner
2014-11-18 9:26 ` Yun Wu (Abel)
2014-11-18 10:19 ` Thomas Gleixner
2014-11-18 13:33 ` Yun Wu (Abel)
2014-11-18 13:43 ` Jiang Liu
2014-11-18 13:52 ` Yun Wu (Abel)
2014-11-18 14:03 ` Jiang Liu
2014-11-18 14:15 ` Jiang Liu
2014-11-18 14:22 ` Yun Wu (Abel)
2014-11-18 14:29 ` Jiang Liu
2014-11-18 14:46 ` Yun Wu (Abel)
2014-11-18 17:14 ` Marc Zyngier
2014-11-19 3:38 ` Yun Wu (Abel)
2014-11-19 8:55 ` Marc Zyngier [this message]
2014-11-18 14:32 ` Thomas Gleixner
2014-11-19 6:57 ` Yun Wu (Abel)
2014-11-19 8:02 ` Jiang Liu
2014-11-19 9:20 ` Marc Zyngier
2014-12-10 9:26 ` Yun Wu (Abel)
2014-11-18 14:19 ` Thomas Gleixner
2014-11-18 14:34 ` Yun Wu (Abel)
2014-11-18 14:52 ` Jiang Liu
2014-11-19 3:47 ` Yun Wu (Abel)
2014-11-19 11:09 ` Thomas Gleixner
2014-11-18 17:21 ` Marc Zyngier
2014-11-19 3:40 ` Yun Wu (Abel)
2014-11-19 11:11 ` Thomas Gleixner
2014-12-10 9:11 ` Yun Wu (Abel)
2014-12-10 10:25 ` Thomas Gleixner
2014-12-11 3:01 ` Yun Wu (Abel)
2014-11-18 13:51 ` Jiang Liu
2014-11-12 13:43 ` [patch 09/16] genirq: Add generic msi irq domain support Thomas Gleixner
2014-11-18 12:07 ` Yun Wu (Abel)
2014-11-18 12:49 ` Jiang Liu
2014-11-18 13:55 ` Yun Wu (Abel)
2014-11-18 14:24 ` Thomas Gleixner
2014-11-18 14:39 ` Yun Wu (Abel)
2014-11-20 2:29 ` Jiang Liu
2014-11-12 13:43 ` [patch 10/16] PCI/MSI: Move cached entry functions to irq core Thomas Gleixner
2014-11-12 13:43 ` [patch 11/16] PCI/MSI: Remove unnecessary braces around single statements Thomas Gleixner
2014-11-12 13:43 ` [patch 12/16] PCI/MSI: Simplify PCI MSI code by initializing msi_desc.nvec_used earlier Thomas Gleixner
2014-11-12 13:43 ` [patch 13/16] PCI/MSI: Kill redundant call of irq_set_msi_desc() for MSI-X interrupts Thomas Gleixner
2014-11-12 13:43 ` [patch 14/16] PCI/MSI: Rename __read_msi_msg() to __pci_read_msi_msg() Thomas Gleixner
2014-11-12 13:43 ` [patch 15/16] PCI/MSI: Rename write_msi_msg() to pci_write_msi_msg() Thomas Gleixner
2014-11-12 16:50 ` Jiang Liu
2014-11-12 13:43 ` [patch 16/16] PCI/MSI: Enhance core to support hierarchy irqdomain Thomas Gleixner
2014-11-12 15:29 ` Marc Zyngier
2014-11-12 16:43 ` Thomas Gleixner
2014-11-12 14:13 ` [patch 00/16] genirq: Hierarchical irq domains and generic MSI interrupt code Yingjoe Chen
2014-11-12 14:48 ` Thomas Gleixner
2014-11-18 9:24 ` Yun Wu (Abel)
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=87mw7nd0xy.fsf@approximate.cambridge.arm.com \
--to=marc.zyngier@arm.com \
--cc=bhelgaas@google.com \
--cc=grant.likely@linaro.org \
--cc=jiang.liu@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=tglx@linutronix.de \
--cc=wangyijing@huawei.com \
--cc=wuyun.wu@huawei.com \
--cc=yingjoe.chen@mediatek.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.