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From: Xiaowei Bao <xiaowei.bao@nxp.com>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Kishon Vijay Abraham I <kishon@ti.com>
Cc: "mark.rutland@arm.com" <mark.rutland@arm.com>,
	Roy Zang <roy.zang@nxp.com>,
	"lorenzo.pieralisi@arm.co" <lorenzo.pieralisi@arm.co>,
	"arnd@arndb.de" <arnd@arndb.de>,
	"jingoohan1@gmail.com" <jingoohan1@gmail.com>,
	"gustavo.pimentel@synopsys.com" <gustavo.pimentel@synopsys.com>,
	"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Leo Li <leoyang.li@nxp.com>, "M.h. Lian" <minghuan.lian@nxp.com>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"robh+dt@kernel.org" <robh+dt@kernel.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"bhelgaas@google.com" <bhelgaas@google.com>,
	Andrew Murray <andrew.murray@arm.com>,
	"shawnguo@kernel.org" <shawnguo@kernel.org>,
	Mingkai Hu <mingkai.hu@nxp.com>
Subject: RE: [PATCH v2 07/10] PCI: layerscape: Modify the MSIX to the doorbell way
Date: Wed, 6 Nov 2019 09:33:37 +0000
Message-ID: <AM5PR04MB329993172A352E46D325D66BF5790@AM5PR04MB3299.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <20191105123739.GB26960@e121166-lin.cambridge.arm.com>



> -----Original Message-----
> From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> Sent: 2019年11月5日 20:38
> To: Kishon Vijay Abraham I <kishon@ti.com>
> Cc: Andrew Murray <andrew.murray@arm.com>; Xiaowei Bao
> <xiaowei.bao@nxp.com>; gustavo.pimentel@synopsys.com;
> bhelgaas@google.com; robh+dt@kernel.org; mark.rutland@arm.com;
> shawnguo@kernel.org; Leo Li <leoyang.li@nxp.com>;
> lorenzo.pieralisi@arm.co; arnd@arndb.de; gregkh@linuxfoundation.org; M.h.
> Lian <minghuan.lian@nxp.com>; Mingkai Hu <mingkai.hu@nxp.com>; Roy
> Zang <roy.zang@nxp.com>; jingoohan1@gmail.com;
> linux-pci@vger.kernel.org; devicetree@vger.kernel.org;
> linux-kernel@vger.kernel.org; linux-arm-kernel@lists.infradead.org;
> linuxppc-dev@lists.ozlabs.org
> Subject: Re: [PATCH v2 07/10] PCI: layerscape: Modify the MSIX to the
> doorbell way
> 
> On Thu, Aug 29, 2019 at 10:43:18AM +0530, Kishon Vijay Abraham I wrote:
> > Gustavo,
> >
> > On 27/08/19 6:55 PM, Andrew Murray wrote:
> > > On Sat, Aug 24, 2019 at 12:08:40AM +0000, Xiaowei Bao wrote:
> > >>
> > >>
> > >>> -----Original Message-----
> > >>> From: Andrew Murray <andrew.murray@arm.com>
> > >>> Sent: 2019年8月23日 21:58
> > >>> To: Xiaowei Bao <xiaowei.bao@nxp.com>
> > >>> Cc: bhelgaas@google.com; robh+dt@kernel.org;
> mark.rutland@arm.com;
> > >>> shawnguo@kernel.org; Leo Li <leoyang.li@nxp.com>; kishon@ti.com;
> > >>> lorenzo.pieralisi@arm.co; arnd@arndb.de; gregkh@linuxfoundation.org;
> M.h.
> > >>> Lian <minghuan.lian@nxp.com>; Mingkai Hu <mingkai.hu@nxp.com>;
> Roy
> > >>> Zang <roy.zang@nxp.com>; jingoohan1@gmail.com;
> > >>> gustavo.pimentel@synopsys.com; linux-pci@vger.kernel.org;
> > >>> devicetree@vger.kernel.org; linux-kernel@vger.kernel.org;
> > >>> linux-arm-kernel@lists.infradead.org;
> > >>> linuxppc-dev@lists.ozlabs.org
> > >>> Subject: Re: [PATCH v2 07/10] PCI: layerscape: Modify the MSIX to
> > >>> the doorbell way
> > >>>
> > >>> On Thu, Aug 22, 2019 at 07:22:39PM +0800, Xiaowei Bao wrote:
> > >>>> The layerscape platform use the doorbell way to trigger MSIX
> > >>>> interrupt in EP mode.
> > >>>>
> > >>>
> > >>> I have no problems with this patch, however...
> > >>>
> > >>> Are you able to add to this message a reason for why you are
> > >>> making this change? Did dw_pcie_ep_raise_msix_irq not work when
> > >>> func_no != 0? Or did it work yet dw_pcie_ep_raise_msix_irq_doorbell is
> more efficient?
> > >>
> > >> The fact is that, this driver is verified in ls1046a platform of
> > >> NXP before, and ls1046a don't support MSIX feature, so I set the
> > >> msix_capable of pci_epc_features struct is false, but in other
> > >> platform, e.g. ls1088a, it support the MSIX feature, I verified the MSIX
> feature in ls1088a, it is not OK, so I changed to another way. Thanks.
> > >
> > > Right, so the existing pci-layerscape-ep.c driver never supported
> > > MSIX yet it erroneously had a switch case statement to call
> > > dw_pcie_ep_raise_msix_irq which would never get used.
> > >
> > > Now that we're adding a platform with MSIX support the existing
> > > dw_pcie_ep_raise_msix_irq doesn't work (for this platform) so we are
> > > adding a different method.
> >
> > Gustavo, can you confirm dw_pcie_ep_raise_msix_irq() works for
> > designware as it didn't work for both me and Xiaowei?
> 
> This question needs an answer.

This question have answered by Gustavo in "[PATCH v3 08/11] PCI: layerscape: 
Modify the MSIX to the doorbell mode", please refer to the comments, due to
add a new patch for this sets of patch, this patch number changed from 07/10 of v2
to 08/11 of v3, sorry for causing your confuse.


Thanks 
Xiaowei  


> 
> Thanks,
> Lorenzo

  reply index

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-22 11:22 [PATCH v2 01/10] PCI: designware-ep: Add multiple PFs support for DWC Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 02/10] PCI: designware-ep: Add the doorbell mode of MSI-X in EP mode Xiaowei Bao
2019-08-23 13:35   ` Andrew Murray
2019-08-23 23:51     ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 03/10] PCI: designware-ep: Move the function of getting MSI capability forward Xiaowei Bao
2019-08-23 13:38   ` Andrew Murray
2019-08-24  0:20     ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 04/10] dt-bindings: pci: layerscape-pci: add compatible strings for ls1088a and ls2088a Xiaowei Bao
2019-08-27 22:26   ` Rob Herring
2019-08-29  9:19     ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 05/10] PCI: layerscape: Fix some format issue of the code Xiaowei Bao
2019-08-23 13:45   ` Andrew Murray
2019-08-24  0:00     ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 06/10] PCI: layerscape: Modify the way of getting capability with different PEX Xiaowei Bao
2019-08-22 11:43   ` Kishon Vijay Abraham I
2019-08-23  2:39     ` Xiaowei Bao
2019-08-23  3:39       ` Kishon Vijay Abraham I
2019-08-23  4:13         ` Xiaowei Bao
2019-09-02 13:36           ` Andrew Murray
2019-09-03  2:11             ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 07/10] PCI: layerscape: Modify the MSIX to the doorbell way Xiaowei Bao
2019-08-23 13:58   ` Andrew Murray
2019-08-24  0:08     ` Xiaowei Bao
2019-08-27 13:25       ` Andrew Murray
2019-08-28  2:49         ` Xiaowei Bao
2019-08-29  5:13         ` Kishon Vijay Abraham I
2019-11-05 12:37           ` Lorenzo Pieralisi
2019-11-06  9:33             ` Xiaowei Bao [this message]
2019-11-06  9:40           ` Gustavo Pimentel
2019-11-06 10:03             ` Xiaowei Bao
2019-11-06 13:39             ` Kishon Vijay Abraham I
2019-11-06 15:40               ` Gustavo Pimentel
2019-08-22 11:22 ` [PATCH v2 08/10] PCI: layerscape: Add EP mode support for ls1088a and ls2088a Xiaowei Bao
2019-08-23 14:27   ` Andrew Murray
2019-08-24  0:18     ` Xiaowei Bao
2019-08-24  6:45       ` christophe leroy
2019-08-25  3:07         ` Xiaowei Bao
2019-08-27 14:48           ` Andrew Murray
2019-08-28  3:25             ` Xiaowei Bao
2019-08-26  9:49     ` Xiaowei Bao
2019-08-27 13:34       ` Andrew Murray
2019-08-28  4:29         ` Xiaowei Bao
2019-08-28  9:01           ` Andrew Murray
2019-08-29  2:03             ` Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 09/10] arm64: dts: layerscape: Add PCIe EP node for ls1088a Xiaowei Bao
2019-08-22 11:22 ` [PATCH v2 10/10] misc: pci_endpoint_test: Add LS1088a in pci_device_id table Xiaowei Bao
2019-08-23 13:25 ` [PATCH v2 01/10] PCI: designware-ep: Add multiple PFs support for DWC Andrew Murray
2019-08-23 23:50   ` Xiaowei Bao
2019-08-27 13:10     ` Andrew Murray
2019-08-28  7:22       ` Xiaowei Bao

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