]>
Commit | Line | Data |
---|---|---|
b2a65138 FH |
1 | /** |
2 | * IBM Accelerator Family 'GenWQE' | |
3 | * | |
4 | * (C) Copyright IBM Corp. 2013 | |
5 | * | |
6 | * Author: Frank Haverkamp <haver@linux.vnet.ibm.com> | |
7 | * Author: Joerg-Stephan Vogt <jsvogt@de.ibm.com> | |
26d8f6f1 | 8 | * Author: Michael Jung <mijung@gmx.net> |
b2a65138 FH |
9 | * Author: Michael Ruettger <michael@ibmra.de> |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License (version 2 only) | |
13 | * as published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | */ | |
20 | ||
21 | /* | |
22 | * Sysfs interfaces for the GenWQE card. There are attributes to query | |
23 | * the version of the bitstream as well as some for the driver. For | |
24 | * debugging, please also see the debugfs interfaces of this driver. | |
25 | */ | |
26 | ||
b2a65138 FH |
27 | #include <linux/kernel.h> |
28 | #include <linux/types.h> | |
29 | #include <linux/module.h> | |
30 | #include <linux/pci.h> | |
31 | #include <linux/string.h> | |
32 | #include <linux/fs.h> | |
33 | #include <linux/sysfs.h> | |
34 | #include <linux/ctype.h> | |
35 | #include <linux/device.h> | |
36 | ||
37 | #include "card_base.h" | |
38 | #include "card_ddcb.h" | |
39 | ||
40 | static const char * const genwqe_types[] = { | |
41 | [GENWQE_TYPE_ALTERA_230] = "GenWQE4-230", | |
42 | [GENWQE_TYPE_ALTERA_530] = "GenWQE4-530", | |
43 | [GENWQE_TYPE_ALTERA_A4] = "GenWQE5-A4", | |
44 | [GENWQE_TYPE_ALTERA_A7] = "GenWQE5-A7", | |
45 | }; | |
46 | ||
47 | static ssize_t status_show(struct device *dev, struct device_attribute *attr, | |
48 | char *buf) | |
49 | { | |
50 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
51 | const char *cs[GENWQE_CARD_STATE_MAX] = { "unused", "used", "error" }; | |
52 | ||
53 | return sprintf(buf, "%s\n", cs[cd->card_state]); | |
54 | } | |
55 | static DEVICE_ATTR_RO(status); | |
56 | ||
57 | static ssize_t appid_show(struct device *dev, struct device_attribute *attr, | |
58 | char *buf) | |
59 | { | |
60 | char app_name[5]; | |
61 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
62 | ||
63 | genwqe_read_app_id(cd, app_name, sizeof(app_name)); | |
64 | return sprintf(buf, "%s\n", app_name); | |
65 | } | |
66 | static DEVICE_ATTR_RO(appid); | |
67 | ||
68 | static ssize_t version_show(struct device *dev, struct device_attribute *attr, | |
69 | char *buf) | |
70 | { | |
71 | u64 slu_id, app_id; | |
72 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
73 | ||
74 | slu_id = __genwqe_readq(cd, IO_SLU_UNITCFG); | |
75 | app_id = __genwqe_readq(cd, IO_APP_UNITCFG); | |
76 | ||
77 | return sprintf(buf, "%016llx.%016llx\n", slu_id, app_id); | |
78 | } | |
79 | static DEVICE_ATTR_RO(version); | |
80 | ||
81 | static ssize_t type_show(struct device *dev, struct device_attribute *attr, | |
82 | char *buf) | |
83 | { | |
84 | u8 card_type; | |
85 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
86 | ||
87 | card_type = genwqe_card_type(cd); | |
88 | return sprintf(buf, "%s\n", (card_type >= ARRAY_SIZE(genwqe_types)) ? | |
89 | "invalid" : genwqe_types[card_type]); | |
90 | } | |
91 | static DEVICE_ATTR_RO(type); | |
92 | ||
b2a65138 FH |
93 | static ssize_t tempsens_show(struct device *dev, struct device_attribute *attr, |
94 | char *buf) | |
95 | { | |
96 | u64 tempsens; | |
97 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
98 | ||
99 | tempsens = __genwqe_readq(cd, IO_SLU_TEMPERATURE_SENSOR); | |
100 | return sprintf(buf, "%016llx\n", tempsens); | |
101 | } | |
102 | static DEVICE_ATTR_RO(tempsens); | |
103 | ||
104 | static ssize_t freerunning_timer_show(struct device *dev, | |
105 | struct device_attribute *attr, | |
106 | char *buf) | |
107 | { | |
108 | u64 t; | |
109 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
110 | ||
111 | t = __genwqe_readq(cd, IO_SLC_FREE_RUNNING_TIMER); | |
112 | return sprintf(buf, "%016llx\n", t); | |
113 | } | |
114 | static DEVICE_ATTR_RO(freerunning_timer); | |
115 | ||
116 | static ssize_t queue_working_time_show(struct device *dev, | |
117 | struct device_attribute *attr, | |
118 | char *buf) | |
119 | { | |
120 | u64 t; | |
121 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
122 | ||
123 | t = __genwqe_readq(cd, IO_SLC_QUEUE_WTIME); | |
124 | return sprintf(buf, "%016llx\n", t); | |
125 | } | |
126 | static DEVICE_ATTR_RO(queue_working_time); | |
127 | ||
128 | static ssize_t base_clock_show(struct device *dev, | |
129 | struct device_attribute *attr, | |
130 | char *buf) | |
131 | { | |
132 | u64 base_clock; | |
133 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
134 | ||
135 | base_clock = genwqe_base_clock_frequency(cd); | |
136 | return sprintf(buf, "%lld\n", base_clock); | |
137 | } | |
138 | static DEVICE_ATTR_RO(base_clock); | |
139 | ||
140 | /** | |
141 | * curr_bitstream_show() - Show the current bitstream id | |
142 | * | |
143 | * There is a bug in some old versions of the CPLD which selects the | |
144 | * bitstream, which causes the IO_SLU_BITSTREAM register to report | |
145 | * unreliable data in very rare cases. This makes this sysfs | |
146 | * unreliable up to the point were a new CPLD version is being used. | |
147 | * | |
148 | * Unfortunately there is no automatic way yet to query the CPLD | |
149 | * version, such that you need to manually ensure via programming | |
150 | * tools that you have a recent version of the CPLD software. | |
151 | * | |
152 | * The proposed circumvention is to use a special recovery bitstream | |
153 | * on the backup partition (0) to identify problems while loading the | |
154 | * image. | |
155 | */ | |
156 | static ssize_t curr_bitstream_show(struct device *dev, | |
157 | struct device_attribute *attr, char *buf) | |
158 | { | |
159 | int curr_bitstream; | |
160 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
161 | ||
162 | curr_bitstream = __genwqe_readq(cd, IO_SLU_BITSTREAM) & 0x1; | |
163 | return sprintf(buf, "%d\n", curr_bitstream); | |
164 | } | |
165 | static DEVICE_ATTR_RO(curr_bitstream); | |
166 | ||
167 | /** | |
168 | * next_bitstream_show() - Show the next activated bitstream | |
169 | * | |
170 | * IO_SLC_CFGREG_SOFTRESET: This register can only be accessed by the PF. | |
171 | */ | |
172 | static ssize_t next_bitstream_show(struct device *dev, | |
173 | struct device_attribute *attr, char *buf) | |
174 | { | |
175 | int next_bitstream; | |
176 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
177 | ||
178 | switch ((cd->softreset & 0xc) >> 2) { | |
179 | case 0x2: | |
180 | next_bitstream = 0; | |
181 | break; | |
182 | case 0x3: | |
183 | next_bitstream = 1; | |
184 | break; | |
185 | default: | |
186 | next_bitstream = -1; | |
187 | break; /* error */ | |
188 | } | |
189 | return sprintf(buf, "%d\n", next_bitstream); | |
190 | } | |
191 | ||
192 | static ssize_t next_bitstream_store(struct device *dev, | |
193 | struct device_attribute *attr, | |
194 | const char *buf, size_t count) | |
195 | { | |
196 | int partition; | |
197 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
198 | ||
199 | if (kstrtoint(buf, 0, &partition) < 0) | |
200 | return -EINVAL; | |
201 | ||
202 | switch (partition) { | |
203 | case 0x0: | |
204 | cd->softreset = 0x78; | |
205 | break; | |
206 | case 0x1: | |
207 | cd->softreset = 0x7c; | |
208 | break; | |
209 | default: | |
210 | return -EINVAL; | |
211 | } | |
212 | ||
213 | __genwqe_writeq(cd, IO_SLC_CFGREG_SOFTRESET, cd->softreset); | |
214 | return count; | |
215 | } | |
216 | static DEVICE_ATTR_RW(next_bitstream); | |
217 | ||
c1f732ad KSS |
218 | static ssize_t reload_bitstream_store(struct device *dev, |
219 | struct device_attribute *attr, | |
220 | const char *buf, size_t count) | |
221 | { | |
222 | int reload; | |
223 | struct genwqe_dev *cd = dev_get_drvdata(dev); | |
224 | ||
225 | if (kstrtoint(buf, 0, &reload) < 0) | |
226 | return -EINVAL; | |
227 | ||
228 | if (reload == 0x1) { | |
229 | if (cd->card_state == GENWQE_CARD_UNUSED || | |
230 | cd->card_state == GENWQE_CARD_USED) | |
231 | cd->card_state = GENWQE_CARD_RELOAD_BITSTREAM; | |
232 | else | |
233 | return -EIO; | |
234 | } else { | |
235 | return -EINVAL; | |
236 | } | |
237 | ||
238 | return count; | |
239 | } | |
240 | static DEVICE_ATTR_WO(reload_bitstream); | |
241 | ||
b2a65138 FH |
242 | /* |
243 | * Create device_attribute structures / params: name, mode, show, store | |
244 | * additional flag if valid in VF | |
245 | */ | |
246 | static struct attribute *genwqe_attributes[] = { | |
247 | &dev_attr_tempsens.attr, | |
248 | &dev_attr_next_bitstream.attr, | |
249 | &dev_attr_curr_bitstream.attr, | |
250 | &dev_attr_base_clock.attr, | |
b2a65138 FH |
251 | &dev_attr_type.attr, |
252 | &dev_attr_version.attr, | |
253 | &dev_attr_appid.attr, | |
254 | &dev_attr_status.attr, | |
255 | &dev_attr_freerunning_timer.attr, | |
256 | &dev_attr_queue_working_time.attr, | |
c1f732ad | 257 | &dev_attr_reload_bitstream.attr, |
b2a65138 FH |
258 | NULL, |
259 | }; | |
260 | ||
261 | static struct attribute *genwqe_normal_attributes[] = { | |
b2a65138 FH |
262 | &dev_attr_type.attr, |
263 | &dev_attr_version.attr, | |
264 | &dev_attr_appid.attr, | |
265 | &dev_attr_status.attr, | |
266 | &dev_attr_freerunning_timer.attr, | |
267 | &dev_attr_queue_working_time.attr, | |
268 | NULL, | |
269 | }; | |
270 | ||
271 | /** | |
272 | * genwqe_is_visible() - Determine if sysfs attribute should be visible or not | |
273 | * | |
274 | * VFs have restricted mmio capabilities, so not all sysfs entries | |
275 | * are allowed in VFs. | |
276 | */ | |
277 | static umode_t genwqe_is_visible(struct kobject *kobj, | |
278 | struct attribute *attr, int n) | |
279 | { | |
280 | unsigned int j; | |
6908b45e | 281 | struct device *dev = kobj_to_dev(kobj); |
b2a65138 FH |
282 | struct genwqe_dev *cd = dev_get_drvdata(dev); |
283 | umode_t mode = attr->mode; | |
284 | ||
285 | if (genwqe_is_privileged(cd)) | |
286 | return mode; | |
287 | ||
288 | for (j = 0; genwqe_normal_attributes[j] != NULL; j++) | |
289 | if (genwqe_normal_attributes[j] == attr) | |
290 | return mode; | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | static struct attribute_group genwqe_attribute_group = { | |
296 | .is_visible = genwqe_is_visible, | |
297 | .attrs = genwqe_attributes, | |
298 | }; | |
299 | ||
300 | const struct attribute_group *genwqe_attribute_groups[] = { | |
301 | &genwqe_attribute_group, | |
302 | NULL, | |
303 | }; |