projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| fab97220 HS |
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 | ||
| e675b6db | 45 | u64 hcall_map_page(u64 physaddr) |
| fab97220 | 46 | { |
| e675b6db | 47 | return (u64)ioremap(physaddr, EHCA_PAGESIZE); |
| fab97220 HS |
48 | } |
| 49 | ||
| 50 | int hcall_unmap_page(u64 mapaddr) | |
| 51 | { | |
| 2b94397a | 52 | iounmap((volatile void __iomem *) mapaddr); |
| fab97220 HS |
53 | return 0; |
| 54 | } | |
| 55 | ||
| 1988d1fa | 56 | int hcp_galpas_ctor(struct h_galpas *galpas, int is_user, |
| fab97220 HS |
57 | u64 paddr_kernel, u64 paddr_user) |
| 58 | { | |
| 1988d1fa | 59 | if (!is_user) { |
| e675b6db AS |
60 | galpas->kernel.fw_handle = hcall_map_page(paddr_kernel); |
| 61 | if (!galpas->kernel.fw_handle) | |
| 62 | return -ENOMEM; | |
| 1988d1fa SR |
63 | } else |
| 64 | galpas->kernel.fw_handle = 0; | |
| fab97220 HS |
65 | |
| 66 | galpas->user.fw_handle = paddr_user; | |
| 67 | ||
| 68 | return 0; | |
| 69 | } | |
| 70 | ||
| 71 | int hcp_galpas_dtor(struct h_galpas *galpas) | |
| 72 | { | |
| 73 | if (galpas->kernel.fw_handle) { | |
| 74 | int ret = hcall_unmap_page(galpas->kernel.fw_handle); | |
| 75 | if (ret) | |
| 76 | return ret; | |
| 77 | } | |
| 78 | ||
| 79 | galpas->user.fw_handle = galpas->kernel.fw_handle = 0; | |
| 80 | ||
| 81 | return 0; | |
| 82 | } |