From mboxrd@z Thu Jan 1 00:00:00 1970 From: pratyush.anand@st.com (Pratyush Anand) Date: Thu, 17 Jul 2014 09:06:38 +0530 Subject: [PATCH v5 3/5] PCI: designware: enhance dw_pcie_host_init() to support v3.65 DW hardware In-Reply-To: <1405528686-16539-4-git-send-email-m-karicheri2@ti.com> References: <1405528686-16539-1-git-send-email-m-karicheri2@ti.com> <1405528686-16539-4-git-send-email-m-karicheri2@ti.com> Message-ID: <20140717033638.GI12278@pratyush-vbox> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, Jul 17, 2014 at 12:38:04AM +0800, Murali Karicheri wrote: > keystone PCI controller is based on v3.65 designware hardware. This > version differs from newer versions of the hardware in few functional > areas discussed below that makes it necessary to change dw_pcie_host_init() > to support v3.65 based PCI controller. > > 1. No support for ATU port. So any ATU specific resource handling code > is to be bypassed for v3.65 h/w. > 2. MSI controller uses Application space to implement MSI and 32 MSI > interrupts are multiplexed over 8 IRQs to the host. Hence the code > to process MSI IRQ needs to be different. This patch allows platform > driver to provide its own irq_domain_ops ptr to irq_domain_add_linear() > through an API callback from the designware core driver. > 3. MSI interrupt generation requires EP to write to the RC's application > register. So enhance the driver to allow setup of inbound access to > MSI irq register as a post scan bus API callback. > > Signed-off-by: Murali Karicheri Looks almost ok to me. Reviewed-by: Pratyush Anand > int __init dw_pcie_host_init(struct pcie_port *pp) > { > struct device_node *np = pp->dev->of_node; > - struct of_pci_range range; > struct of_pci_range_parser parser; > + struct of_pci_range range; You may avoid moving the above line. ~Pratyush