Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965010AbWEORnY (ORCPT ); Mon, 15 May 2006 13:43:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965009AbWEORnR (ORCPT ); Mon, 15 May 2006 13:43:17 -0400 Received: from mtagate2.de.ibm.com ([195.212.29.151]:54987 "EHLO mtagate2.de.ibm.com") by vger.kernel.org with ESMTP id S965014AbWEORmz (ORCPT ); Mon, 15 May 2006 13:42:55 -0400 Message-ID: <4468BDB7.6060106@de.ibm.com> Date: Mon, 15 May 2006 19:43:19 +0200 From: Heiko J Schick User-Agent: Mozilla Thunderbird 1.0.6 (Windows/20050716) X-Accept-Language: en-us, en MIME-Version: 1.0 To: openib-general@openib.org, Christoph Raisch , Hoang-Nam Nguyen , Marcus Eder , schihei@de.ibm.com, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Subject: [PATCH 15/16] ehca: PHYP abstraction layer Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6962 Lines: 209 Signed-off-by: Heiko J Schick drivers/infiniband/hw/ehca/hcp_phyp.c | 92 ++++++++++++++++++++++++++++++++ drivers/infiniband/hw/ehca/hcp_phyp.h | 95 ++++++++++++++++++++++++++++++++++ 2 files changed, 187 insertions(+) --- linux-2.6.17-rc2-orig/drivers/infiniband/hw/ehca/hcp_phyp.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.17-rc2/drivers/infiniband/hw/ehca/hcp_phyp.h 2006-05-02 12:48:48.000000000 +0200 @@ -0,0 +1,95 @@ +/* + * IBM eServer eHCA Infiniband device driver for Linux on POWER + * + * Firmware calls + * + * Authors: Christoph Raisch + * Hoang-Nam Nguyen + * Waleri Fomin + * Gerd Bayer + * + * Copyright (c) 2005 IBM Corporation + * + * All rights reserved. + * + * This source code is distributed under a dual license of GPL v2.0 and OpenIB + * BSD. + * + * OpenIB BSD License + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER + * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __HCP_PHYP_H__ +#define __HCP_PHYP_H__ + + +/* eHCA page (mapped into memory) + resource to access eHCA register pages in CPU address space +*/ +struct h_galpa { + u64 fw_handle; + /* for pSeries this is a 64bit memory address where + I/O memory is mapped into CPU address space (kv) */ +}; + +/* + resource to access eHCA address space registers, all types +*/ +struct h_galpas { + u32 pid; /*PID of userspace galpa checking */ + struct h_galpa user; /* user space accessible resource, + set to 0 if unused */ + struct h_galpa kernel; /* kernel space accessible resource, + set to 0 if unused */ +}; + +static inline u64 hipz_galpa_load(struct h_galpa galpa, u32 offset) +{ + u64 addr = galpa.fw_handle + offset; + u64 out; + EDEB_EN(7, "addr=%lx offset=%x ", addr, offset); + out = *(u64 *) addr; + EDEB_EX(7, "addr=%lx value=%lx", addr, out); + return out; +} + +static inline void hipz_galpa_store(struct h_galpa galpa, u32 offset, u64 value) +{ + u64 addr = galpa.fw_handle + offset; + EDEB(7, "addr=%lx offset=%x value=%lx", addr, + offset, value); + *(u64 *) addr = value; +} + +int hcp_galpas_ctor(struct h_galpas *galpas, + u64 paddr_kernel, u64 paddr_user); + +int hcp_galpas_dtor(struct h_galpas *galpas); + +int hcall_map_page(u64 physaddr, u64 * mapaddr); + +int hcall_unmap_page(u64 mapaddr); + +#endif --- linux-2.6.17-rc2-orig/drivers/infiniband/hw/ehca/hcp_phyp.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.17-rc2/drivers/infiniband/hw/ehca/hcp_phyp.c 2006-05-03 13:44:00.000000000 +0200 @@ -0,0 +1,92 @@ +/* + * IBM eServer eHCA Infiniband device driver for Linux on POWER + * + * load store abstraction for ehca register access with tracing + * + * Authors: Christoph Raisch + * Hoang-Nam Nguyen + * + * Copyright (c) 2005 IBM Corporation + * + * All rights reserved. + * + * This source code is distributed under a dual license of GPL v2.0 and OpenIB + * BSD. + * + * OpenIB BSD License + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER + * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#define DEB_PREFIX "PHYP" + +#include "ehca_classes.h" +#include "hipz_hw.h" + +int hcall_map_page(u64 physaddr, u64 *mapaddr) +{ + *mapaddr = (u64)(ioremap(physaddr, EHCA_PAGESIZE)); + + EDEB(7, "ioremap physaddr=%lx mapaddr=%lx", physaddr, *mapaddr); + return 0; +} + +int hcall_unmap_page(u64 mapaddr) +{ + EDEB(7, "mapaddr=%lx", mapaddr); + iounmap((volatile void __iomem*)mapaddr); + return 0; +} + +int hcp_galpas_ctor(struct h_galpas *galpas, + u64 paddr_kernel, u64 paddr_user) +{ + int ret = hcall_map_page(paddr_kernel, &galpas->kernel.fw_handle); + if (ret) + return ret; + + galpas->user.fw_handle = paddr_user; + + EDEB(7, "paddr_kernel=%lx paddr_user=%lx galpas->kernel=%lx" + " galpas->user=%lx", + paddr_kernel, paddr_user, galpas->kernel.fw_handle, + galpas->user.fw_handle); + + return ret; +} + +int hcp_galpas_dtor(struct h_galpas *galpas) +{ + int ret = 0; + + if (galpas->kernel.fw_handle) + ret = hcall_unmap_page(galpas->kernel.fw_handle); + + if (ret) + return ret; + + galpas->user.fw_handle = galpas->kernel.fw_handle = 0; + + return ret; +} - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/