1 /*
2 * IBM eServer eHCA Infiniband device driver for Linux on POWER
3 *
4 * auxiliary functions
5 *
6 * Authors: Christoph Raisch <raisch@de.ibm.com>
7 * Hoang-Nam Nguyen <hnguyen@de.ibm.com>
8 * Khadija Souissi <souissik@de.ibm.com>
9 * Waleri Fomin <fomin@de.ibm.com>
10 * Heiko J Schick <schickhj@de.ibm.com>
11 *
12 * Copyright (c) 2005 IBM Corporation
13 *
14 * This source code is distributed under a dual license of GPL v2.0 and OpenIB
15 * BSD.
16 *
17 * OpenIB BSD License
18 *
19 * Redistribution and use in source and binary forms, with or without
20 * modification, are permitted provided that the following conditions are met:
21 *
22 * Redistributions of source code must retain the above copyright notice, this
23 * list of conditions and the following disclaimer.
24 *
25 * Redistributions in binary form must reproduce the above copyright notice,
26 * this list of conditions and the following disclaimer in the documentation
27 * and/or other materials
28 * provided with the distribution.
29 *
30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
31 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
34 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
35 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
36 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
37 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
38 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
40 * POSSIBILITY OF SUCH DAMAGE.
41 */
42
43
44 #ifndef EHCA_TOOLS_H
45 #define EHCA_TOOLS_H
46
47 #include <linux/kernel.h>
48 #include <linux/spinlock.h>
49 #include <linux/delay.h>
50 #include <linux/idr.h>
51 #include <linux/kthread.h>
52 #include <linux/mm.h>
53 #include <linux/mman.h>
54 #include <linux/module.h>
55 #include <linux/moduleparam.h>
56 #include <linux/vmalloc.h>
57 #include <linux/notifier.h>
58 #include <linux/cpu.h>
59 #include <linux/device.h>
60
61 #include <asm/atomic.h>
62 #include <asm/abs_addr.h>
63 #include <asm/ibmebus.h>
64 #include <asm/io.h>
65 #include <asm/pgtable.h>
66 #include <asm/hvcall.h>
67
68 extern int ehca_debug_level;
69
70 #define ehca_dbg(ib_dev, format, arg...) \
71 do { \
72 if (unlikely(ehca_debug_level)) \
73 dev_printk(KERN_DEBUG, (ib_dev)->dma_device, \
74 "PU%04x EHCA_DBG:%s " format "\n", \
75 raw_smp_processor_id(), __func__, \
76 ## arg); \
77 } while (0)
78
79 #define ehca_info(ib_dev, format, arg...) \
80 dev_info((ib_dev)->dma_device, "PU%04x EHCA_INFO:%s " format "\n", \
81 raw_smp_processor_id(), __func__, ## arg)
82
83 #define ehca_warn(ib_dev, format, arg...) \
84 dev_warn((ib_dev)->dma_device, "PU%04x EHCA_WARN:%s " format "\n", \
85 raw_smp_processor_id(), __func__, ## arg)
86
87 #define ehca_err(ib_dev, format, arg...) \
88 dev_err((ib_dev)->dma_device, "PU%04x EHCA_ERR:%s " format "\n", \
89 raw_smp_processor_id(), __func__, ## arg)
90
91 /* use this one only if no ib_dev available */
92 #define ehca_gen_dbg(format, arg...) \
93 do { \
94 if (unlikely(ehca_debug_level)) \
95 printk(KERN_DEBUG "PU%04x EHCA_DBG:%s " format "\n", \
96 raw_smp_processor_id(), __func__, ## arg); \
97 } while (0)
98
99 #define ehca_gen_warn(format, arg...) \
100 printk(KERN_INFO "PU%04x EHCA_WARN:%s " format "\n", \
101 raw_smp_processor_id(), __func__, ## arg)
102
103 #define ehca_gen_err(format, arg...) \
104 printk(KERN_ERR "PU%04x EHCA_ERR:%s " format "\n", \
105 raw_smp_processor_id(), __func__, ## arg)
106
107 /**
108 * ehca_dmp - printk a memory block, whose length is n*8 bytes.
109 * Each line has the following layout:
110 * <format string> adr=X ofs=Y <8 bytes hex> <8 bytes hex>
111 */
112 #define ehca_dmp(adr, len, format, args...) \
113 do { \
114 unsigned int x; \
115 unsigned int l = (unsigned int)(len); \
116 unsigned char *deb = (unsigned char *)(adr); \
117 for (x = 0; x < l; x += 16) { \
118 printk(KERN_INFO "EHCA_DMP:%s " format \
119 " adr=%p ofs=%04x %016llx %016llx\n", \
120 __func__, ##args, deb, x, \
121 *((u64 *)&deb[0]), *((u64 *)&deb[8])); \
122 deb += 16; \
123 } \
124 } while (0)
125
126 /* define a bitmask, little endian version */
127 #define EHCA_BMASK(pos, length) (((pos) << 16) + (length))
128
129 /* define a bitmask, the ibm way... */
130 #define EHCA_BMASK_IBM(from, to) (((63 - to) << 16) + ((to) - (from) + 1))
131
132 /* internal function, don't use */
133 #define EHCA_BMASK_SHIFTPOS(mask) (((mask) >> 16) & 0xffff)
134
135 /* internal function, don't use */
136 #define EHCA_BMASK_MASK(mask) (~0ULL >> ((64 - (mask)) & 0xffff))
137
138 /**
139 * EHCA_BMASK_SET - return value shifted and masked by mask
140 * variable|=EHCA_BMASK_SET(MY_MASK,0x4711) ORs the bits in variable
141 * variable&=~EHCA_BMASK_SET(MY_MASK,-1) clears the bits from the mask
142 * in variable
143 */
144 #define EHCA_BMASK_SET(mask, value) \
145 ((EHCA_BMASK_MASK(mask) & ((u64)(value))) << EHCA_BMASK_SHIFTPOS(mask))
146
147 /**
148 * EHCA_BMASK_GET - extract a parameter from value by mask
149 */
150 #define EHCA_BMASK_GET(mask, value) \
151 (EHCA_BMASK_MASK(mask) & (((u64)(value)) >> EHCA_BMASK_SHIFTPOS(mask)))
152
153 /* Converts ehca to ib return code */
154 int ehca2ib_return_code(u64 ehca_rc);
155
156 #endif /* EHCA_TOOLS_H */
157
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