From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751239Ab1CCFBa (ORCPT ); Thu, 3 Mar 2011 00:01:30 -0500 Received: from eu1sys200aog110.obsmtp.com ([207.126.144.129]:51770 "EHLO eu1sys200aog110.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750742Ab1CCFB3 (ORCPT ); Thu, 3 Mar 2011 00:01:29 -0500 Message-ID: <4D6F205F.5080209@st.com> Date: Thu, 3 Mar 2011 10:30:15 +0530 From: pratyush User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 MIME-Version: 1.0 To: Andrew Morton Cc: "rdunlap@xenotime.net" , "linux-kernel@vger.kernel.org" , "linux-pci@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "gregkh@suse.de" , "jbarnes@virtuousgeek.org" , Viresh KUMAR , Shiraz HASHIM Subject: Re: [PATCH V5 Resend] ST SPEAr: PCIE gadget suppport References: <1298276455-23989-1-git-send-email-pratyush.anand@st.com> <20110223160632.0b21c550.akpm@linux-foundation.org> In-Reply-To: <20110223160632.0b21c550.akpm@linux-foundation.org> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2/24/2011 5:36 AM, Andrew Morton wrote: > On Mon, 21 Feb 2011 13:50:55 +0530 > Pratyush Anand wrote: > >> This is a configurable gadget. can be configured by configfs interface. Any >> IP available at PCIE bus can be programmed to be used by host >> controller.It supoorts both INTX and MSI. >> By default, gadget is configured for INTX and SYSRAM1 is mapped to BAR0 >> with size 0x1000 >> >> Changes since V4: >> - All documentation related comments incorporated >> >> Changes since V3: >> - support for multiple instances of such device > > ^^ This doesn't seem to agree with the documentation. > Will add a line in documentation for it. >> ... >> >> --- /dev/null >> +++ b/Documentation/ABI/testing/configfs-spear-pcie-gadget >> @@ -0,0 +1,30 @@ >> +What: /config/pcie-gadget >> +Date: Feb 2011 >> +KernelVersion: 2.6.37 >> +Contact: Pratyush Anand >> +Description: >> + >> + Interface is used to configure selected dual mode PCIe controller >> + as device and then program its various registers to configure it >> + as a particular device type. >> + This interfaces can be used to show spear's PCIe device capability. >> + >> + Nodes are only visible when configfs is mounted. To mount configfs >> + in /config directory use: >> + # mount -t configfs none /config/ >> + >> + /config/pcie-gadget/ >> + link ... used to enable ltssm and read its status. >> + int_type ...used to configure and read type of supported >> + interrupt >> + no_of_msi ... used to configure number of MSI vector needed and >> + to read no of MSI granted. >> + inta ... write 1 to assert INTA and 0 to de-assert. >> + send_msi ... write MSI vector to be sent. >> + vendor_id ... used to write and read vendor id (hex) >> + device_id ... used to write and read device id (hex) >> + bar0_size ... used to write and read bar0_size >> + bar0_address ... used to write and read bar0 mapped area in hex. >> + bar0_rw_offset ... used to write and read offset of bar0 where >> + bar0_data will be written or read. >> + bar0_data ... used to write and read data at bar0_rw_offset. > > What's the configfs naming scheme for the second and later devices? > there would be pcie-gadget.n directory under /config for nth PCIe Device Controller. Regards Pratyush > > . >