1 /*
2 * IBM eServer eHCA Infiniband device driver for Linux on POWER
3 *
4 * Firmware calls
5 *
6 * Authors: Christoph Raisch <raisch@de.ibm.com>
7 * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
8 * Waleri Fomin <fomin@de.ibm.com>
9 * Gerd Bayer <gerd.bayer@de.ibm.com>
10 *
11 * Copyright (c) 2005 IBM Corporation
12 *
13 * All rights reserved.
14 *
15 * This source code is distributed under a dual license of GPL v2.0 and OpenIB
16 * BSD.
17 *
18 * OpenIB BSD License
19 *
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions are met:
22 *
23 * Redistributions of source code must retain the above copyright notice, this
24 * list of conditions and the following disclaimer.
25 *
26 * Redistributions in binary form must reproduce the above copyright notice,
27 * this list of conditions and the following disclaimer in the documentation
28 * and/or other materials
29 * provided with the distribution.
30 *
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
32 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
33 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
34 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
35 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
36 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
37 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
38 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
39 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGE.
42 */
43
44 #ifndef __HCP_PHYP_H__
45 #define __HCP_PHYP_H__
46
47
48 /*
49 * eHCA page (mapped into memory)
50 * resource to access eHCA register pages in CPU address space
51 */
52 struct h_galpa {
53 u64 fw_handle;
54 /* for pSeries this is a 64bit memory address where
55 I/O memory is mapped into CPU address space (kv) */
56 };
57
58 /*
59 * resource to access eHCA address space registers, all types
60 */
61 struct h_galpas {
62 u32 pid; /*PID of userspace galpa checking */
63 struct h_galpa user; /* user space accessible resource,
64 set to 0 if unused */
65 struct h_galpa kernel; /* kernel space accessible resource,
66 set to 0 if unused */
67 };
68
69 static inline u64 hipz_galpa_load(struct h_galpa galpa, u32 offset)
70 {
71 u64 addr = galpa.fw_handle + offset;
72 return *(volatile u64 __force *)addr;
73 }
74
75 static inline void hipz_galpa_store(struct h_galpa galpa, u32 offset, u64 value)
76 {
77 u64 addr = galpa.fw_handle + offset;
78 *(volatile u64 __force *)addr = value;
79 }
80
81 int hcp_galpas_ctor(struct h_galpas *galpas, int is_user,
82 u64 paddr_kernel, u64 paddr_user);
83
84 int hcp_galpas_dtor(struct h_galpas *galpas);
85
86 int hcall_map_page(u64 physaddr, u64 * mapaddr);
87
88 int hcall_unmap_page(u64 mapaddr);
89
90 #endif
91
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