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hcp_phyp.h
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1 /*
2  * IBM eServer eHCA Infiniband device driver for Linux on POWER
3  *
4  * Firmware calls
5  *
6  * Authors: Christoph Raisch <[email protected]>
7  * Hoang-Nam Nguyen <[email protected]>
8  * Waleri Fomin <[email protected]>
9  * Gerd Bayer <[email protected]>
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 {
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 u64 hcall_map_page(u64 physaddr);
87 
88 int hcall_unmap_page(u64 mapaddr);
89 
90 #endif