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/drivers/infiniband/hw/ehca/hcp_phyp.h

https://bitbucket.org/ndreys/linux-sunxi
C++ Header | 90 lines | 26 code | 11 blank | 53 comment | 0 complexity | 87091ba9c611e915efae39a66a16dc8c MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 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*/
52struct 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 */
61struct 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
69static 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
75static 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
81int hcp_galpas_ctor(struct h_galpas *galpas, int is_user,
82		    u64 paddr_kernel, u64 paddr_user);
83
84int hcp_galpas_dtor(struct h_galpas *galpas);
85
86u64 hcall_map_page(u64 physaddr);
87
88int hcall_unmap_page(u64 mapaddr);
89
90#endif