> -----Original Message----- > From: Lorenzo Pieralisi <lorenzo.pieral...@arm.com> > Sent: 2019年11月5日 20:38 > To: Kishon Vijay Abraham I <kis...@ti.com> > Cc: Andrew Murray <andrew.mur...@arm.com>; Xiaowei Bao > <xiaowei....@nxp.com>; gustavo.pimen...@synopsys.com; > bhelg...@google.com; robh...@kernel.org; mark.rutl...@arm.com; > shawn...@kernel.org; Leo Li <leoyang...@nxp.com>; > lorenzo.pieral...@arm.co; a...@arndb.de; gre...@linuxfoundation.org; M.h. > Lian <minghuan.l...@nxp.com>; Mingkai Hu <mingkai...@nxp.com>; Roy > Zang <roy.z...@nxp.com>; jingooh...@gmail.com; > linux-...@vger.kernel.org; devicet...@vger.kernel.org; > linux-ker...@vger.kernel.org; linux-arm-ker...@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.mur...@arm.com> > > >>> Sent: 2019年8月23日 21:58 > > >>> To: Xiaowei Bao <xiaowei....@nxp.com> > > >>> Cc: bhelg...@google.com; robh...@kernel.org; > mark.rutl...@arm.com; > > >>> shawn...@kernel.org; Leo Li <leoyang...@nxp.com>; kis...@ti.com; > > >>> lorenzo.pieral...@arm.co; a...@arndb.de; gre...@linuxfoundation.org; > M.h. > > >>> Lian <minghuan.l...@nxp.com>; Mingkai Hu <mingkai...@nxp.com>; > Roy > > >>> Zang <roy.z...@nxp.com>; jingooh...@gmail.com; > > >>> gustavo.pimen...@synopsys.com; linux-...@vger.kernel.org; > > >>> devicet...@vger.kernel.org; linux-ker...@vger.kernel.org; > > >>> linux-arm-ker...@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
