1/* 2 * IBM eServer eHCA Infiniband device driver for Linux on POWER 3 * 4 * load store abstraction for ehca register access with tracing 5 * 6 * Authors: Christoph Raisch <raisch@de.ibm.com> 7 * Hoang-Nam Nguyen <hnguyen@de.ibm.com> 8 * 9 * Copyright (c) 2005 IBM Corporation 10 * 11 * All rights reserved. 12 * 13 * This source code is distributed under a dual license of GPL v2.0 and OpenIB 14 * BSD. 15 * 16 * OpenIB BSD License 17 * 18 * Redistribution and use in source and binary forms, with or without 19 * modification, are permitted provided that the following conditions are met: 20 * 21 * Redistributions of source code must retain the above copyright notice, this 22 * list of conditions and the following disclaimer. 23 * 24 * Redistributions in binary form must reproduce the above copyright notice, 25 * this list of conditions and the following disclaimer in the documentation 26 * and/or other materials 27 * provided with the distribution. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 30 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 33 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 36 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 37 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 39 * POSSIBILITY OF SUCH DAMAGE. 40 */ 41 42#include "ehca_classes.h" 43#include "hipz_hw.h" 44 45int hcall_map_page(u64 physaddr, u64 *mapaddr) 46{ 47 *mapaddr = (u64)(ioremap(physaddr, EHCA_PAGESIZE)); 48 return 0; 49} 50 51int hcall_unmap_page(u64 mapaddr) 52{ 53 iounmap((volatile void __iomem*)mapaddr); 54 return 0; 55} 56 57int hcp_galpas_ctor(struct h_galpas *galpas, 58 u64 paddr_kernel, u64 paddr_user) 59{ 60 int ret = hcall_map_page(paddr_kernel, &galpas->kernel.fw_handle); 61 if (ret) 62 return ret; 63 64 galpas->user.fw_handle = paddr_user; 65 66 return 0; 67} 68 69int hcp_galpas_dtor(struct h_galpas *galpas) 70{ 71 if (galpas->kernel.fw_handle) { 72 int ret = hcall_unmap_page(galpas->kernel.fw_handle); 73 if (ret) 74 return ret; 75 } 76 77 galpas->user.fw_handle = galpas->kernel.fw_handle = 0; 78 79 return 0; 80} 81