Commit | Line | Data |
---|---|---|
298c7524 DW |
1 | /* |
2 | * A hwmon driver for the Intel 5000 series chipset FB-DIMM AMB | |
3 | * temperature sensors | |
4 | * Copyright (C) 2007 IBM | |
5 | * | |
5407e051 | 6 | * Author: Darrick J. Wong <darrick.wong@oracle.com> |
298c7524 DW |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
298c7524 DW |
24 | #include <linux/hwmon.h> |
25 | #include <linux/hwmon-sysfs.h> | |
26 | #include <linux/err.h> | |
27 | #include <linux/mutex.h> | |
298c7524 DW |
28 | #include <linux/log2.h> |
29 | #include <linux/pci.h> | |
30 | #include <linux/platform_device.h> | |
5a0e3ad6 | 31 | #include <linux/slab.h> |
298c7524 DW |
32 | |
33 | #define DRVNAME "i5k_amb" | |
34 | ||
35 | #define I5K_REG_AMB_BASE_ADDR 0x48 | |
36 | #define I5K_REG_AMB_LEN_ADDR 0x50 | |
37 | #define I5K_REG_CHAN0_PRESENCE_ADDR 0x64 | |
38 | #define I5K_REG_CHAN1_PRESENCE_ADDR 0x66 | |
39 | ||
40 | #define AMB_REG_TEMP_MIN_ADDR 0x80 | |
41 | #define AMB_REG_TEMP_MID_ADDR 0x81 | |
42 | #define AMB_REG_TEMP_MAX_ADDR 0x82 | |
43 | #define AMB_REG_TEMP_STATUS_ADDR 0x84 | |
44 | #define AMB_REG_TEMP_ADDR 0x85 | |
45 | ||
46 | #define AMB_CONFIG_SIZE 2048 | |
47 | #define AMB_FUNC_3_OFFSET 768 | |
48 | ||
59a030a9 DW |
49 | static unsigned long amb_reg_temp_status(unsigned int amb) |
50 | { | |
51 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_STATUS_ADDR + | |
52 | AMB_CONFIG_SIZE * amb; | |
53 | } | |
54 | ||
55 | static unsigned long amb_reg_temp_min(unsigned int amb) | |
56 | { | |
57 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_MIN_ADDR + | |
58 | AMB_CONFIG_SIZE * amb; | |
59 | } | |
60 | ||
61 | static unsigned long amb_reg_temp_mid(unsigned int amb) | |
62 | { | |
63 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_MID_ADDR + | |
64 | AMB_CONFIG_SIZE * amb; | |
65 | } | |
66 | ||
67 | static unsigned long amb_reg_temp_max(unsigned int amb) | |
68 | { | |
69 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_MAX_ADDR + | |
70 | AMB_CONFIG_SIZE * amb; | |
71 | } | |
72 | ||
73 | static unsigned long amb_reg_temp(unsigned int amb) | |
74 | { | |
75 | return AMB_FUNC_3_OFFSET + AMB_REG_TEMP_ADDR + | |
76 | AMB_CONFIG_SIZE * amb; | |
77 | } | |
298c7524 DW |
78 | |
79 | #define MAX_MEM_CHANNELS 4 | |
80 | #define MAX_AMBS_PER_CHANNEL 16 | |
81 | #define MAX_AMBS (MAX_MEM_CHANNELS * \ | |
82 | MAX_AMBS_PER_CHANNEL) | |
963d96b5 DW |
83 | #define CHANNEL_SHIFT 4 |
84 | #define DIMM_MASK 0xF | |
298c7524 DW |
85 | /* |
86 | * Ugly hack: For some reason the highest bit is set if there | |
87 | * are _any_ DIMMs in the channel. Attempting to read from | |
88 | * this "high-order" AMB results in a memory bus error, so | |
89 | * for now we'll just ignore that top bit, even though that | |
90 | * might prevent us from seeing the 16th DIMM in the channel. | |
91 | */ | |
92 | #define REAL_MAX_AMBS_PER_CHANNEL 15 | |
963d96b5 | 93 | #define KNOBS_PER_AMB 6 |
298c7524 | 94 | |
59a030a9 DW |
95 | static unsigned long amb_num_from_reg(unsigned int byte_num, unsigned int bit) |
96 | { | |
97 | return byte_num * MAX_AMBS_PER_CHANNEL + bit; | |
98 | } | |
298c7524 DW |
99 | |
100 | #define AMB_SYSFS_NAME_LEN 16 | |
101 | struct i5k_device_attribute { | |
102 | struct sensor_device_attribute s_attr; | |
103 | char name[AMB_SYSFS_NAME_LEN]; | |
104 | }; | |
105 | ||
106 | struct i5k_amb_data { | |
107 | struct device *hwmon_dev; | |
108 | ||
109 | unsigned long amb_base; | |
110 | unsigned long amb_len; | |
111 | u16 amb_present[MAX_MEM_CHANNELS]; | |
112 | void __iomem *amb_mmio; | |
113 | struct i5k_device_attribute *attrs; | |
114 | unsigned int num_attrs; | |
115 | }; | |
116 | ||
117 | static ssize_t show_name(struct device *dev, struct device_attribute *devattr, | |
118 | char *buf) | |
119 | { | |
120 | return sprintf(buf, "%s\n", DRVNAME); | |
121 | } | |
122 | ||
123 | ||
124 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); | |
125 | ||
126 | static struct platform_device *amb_pdev; | |
127 | ||
128 | static u8 amb_read_byte(struct i5k_amb_data *data, unsigned long offset) | |
129 | { | |
130 | return ioread8(data->amb_mmio + offset); | |
131 | } | |
132 | ||
133 | static void amb_write_byte(struct i5k_amb_data *data, unsigned long offset, | |
134 | u8 val) | |
135 | { | |
136 | iowrite8(val, data->amb_mmio + offset); | |
137 | } | |
138 | ||
139 | static ssize_t show_amb_alarm(struct device *dev, | |
140 | struct device_attribute *devattr, | |
141 | char *buf) | |
142 | { | |
143 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
144 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
145 | ||
59a030a9 DW |
146 | if (!(amb_read_byte(data, amb_reg_temp_status(attr->index)) & 0x20) && |
147 | (amb_read_byte(data, amb_reg_temp_status(attr->index)) & 0x8)) | |
298c7524 DW |
148 | return sprintf(buf, "1\n"); |
149 | else | |
150 | return sprintf(buf, "0\n"); | |
151 | } | |
152 | ||
153 | static ssize_t store_amb_min(struct device *dev, | |
154 | struct device_attribute *devattr, | |
155 | const char *buf, | |
156 | size_t count) | |
157 | { | |
158 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
159 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
7b102ed6 FM |
160 | unsigned long temp; |
161 | int ret = kstrtoul(buf, 10, &temp); | |
162 | if (ret < 0) | |
163 | return ret; | |
298c7524 | 164 | |
7b102ed6 | 165 | temp = temp / 500; |
298c7524 DW |
166 | if (temp > 255) |
167 | temp = 255; | |
168 | ||
59a030a9 | 169 | amb_write_byte(data, amb_reg_temp_min(attr->index), temp); |
298c7524 DW |
170 | return count; |
171 | } | |
172 | ||
173 | static ssize_t store_amb_mid(struct device *dev, | |
174 | struct device_attribute *devattr, | |
175 | const char *buf, | |
176 | size_t count) | |
177 | { | |
178 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
179 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
7b102ed6 FM |
180 | unsigned long temp; |
181 | int ret = kstrtoul(buf, 10, &temp); | |
182 | if (ret < 0) | |
183 | return ret; | |
298c7524 | 184 | |
7b102ed6 | 185 | temp = temp / 500; |
298c7524 DW |
186 | if (temp > 255) |
187 | temp = 255; | |
188 | ||
59a030a9 | 189 | amb_write_byte(data, amb_reg_temp_mid(attr->index), temp); |
298c7524 DW |
190 | return count; |
191 | } | |
192 | ||
193 | static ssize_t store_amb_max(struct device *dev, | |
194 | struct device_attribute *devattr, | |
195 | const char *buf, | |
196 | size_t count) | |
197 | { | |
198 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
199 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
7b102ed6 FM |
200 | unsigned long temp; |
201 | int ret = kstrtoul(buf, 10, &temp); | |
202 | if (ret < 0) | |
203 | return ret; | |
298c7524 | 204 | |
7b102ed6 | 205 | temp = temp / 500; |
298c7524 DW |
206 | if (temp > 255) |
207 | temp = 255; | |
208 | ||
59a030a9 | 209 | amb_write_byte(data, amb_reg_temp_max(attr->index), temp); |
298c7524 DW |
210 | return count; |
211 | } | |
212 | ||
213 | static ssize_t show_amb_min(struct device *dev, | |
214 | struct device_attribute *devattr, | |
215 | char *buf) | |
216 | { | |
217 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
218 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
219 | return sprintf(buf, "%d\n", | |
59a030a9 | 220 | 500 * amb_read_byte(data, amb_reg_temp_min(attr->index))); |
298c7524 DW |
221 | } |
222 | ||
223 | static ssize_t show_amb_mid(struct device *dev, | |
224 | struct device_attribute *devattr, | |
225 | char *buf) | |
226 | { | |
227 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
228 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
229 | return sprintf(buf, "%d\n", | |
59a030a9 | 230 | 500 * amb_read_byte(data, amb_reg_temp_mid(attr->index))); |
298c7524 DW |
231 | } |
232 | ||
233 | static ssize_t show_amb_max(struct device *dev, | |
234 | struct device_attribute *devattr, | |
235 | char *buf) | |
236 | { | |
237 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
238 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
239 | return sprintf(buf, "%d\n", | |
59a030a9 | 240 | 500 * amb_read_byte(data, amb_reg_temp_max(attr->index))); |
298c7524 DW |
241 | } |
242 | ||
243 | static ssize_t show_amb_temp(struct device *dev, | |
244 | struct device_attribute *devattr, | |
245 | char *buf) | |
246 | { | |
247 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
248 | struct i5k_amb_data *data = dev_get_drvdata(dev); | |
249 | return sprintf(buf, "%d\n", | |
59a030a9 | 250 | 500 * amb_read_byte(data, amb_reg_temp(attr->index))); |
298c7524 DW |
251 | } |
252 | ||
963d96b5 DW |
253 | static ssize_t show_label(struct device *dev, |
254 | struct device_attribute *devattr, | |
255 | char *buf) | |
256 | { | |
257 | struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); | |
258 | ||
259 | return sprintf(buf, "Ch. %d DIMM %d\n", attr->index >> CHANNEL_SHIFT, | |
260 | attr->index & DIMM_MASK); | |
261 | } | |
262 | ||
6c931ae1 | 263 | static int i5k_amb_hwmon_init(struct platform_device *pdev) |
298c7524 DW |
264 | { |
265 | int i, j, k, d = 0; | |
266 | u16 c; | |
267 | int res = 0; | |
268 | int num_ambs = 0; | |
269 | struct i5k_amb_data *data = platform_get_drvdata(pdev); | |
270 | ||
271 | /* Count the number of AMBs found */ | |
272 | /* ignore the high-order bit, see "Ugly hack" comment above */ | |
273 | for (i = 0; i < MAX_MEM_CHANNELS; i++) | |
274 | num_ambs += hweight16(data->amb_present[i] & 0x7fff); | |
275 | ||
276 | /* Set up sysfs stuff */ | |
277 | data->attrs = kzalloc(sizeof(*data->attrs) * num_ambs * KNOBS_PER_AMB, | |
278 | GFP_KERNEL); | |
279 | if (!data->attrs) | |
280 | return -ENOMEM; | |
281 | data->num_attrs = 0; | |
282 | ||
283 | for (i = 0; i < MAX_MEM_CHANNELS; i++) { | |
284 | c = data->amb_present[i]; | |
285 | for (j = 0; j < REAL_MAX_AMBS_PER_CHANNEL; j++, c >>= 1) { | |
286 | struct i5k_device_attribute *iattr; | |
287 | ||
59a030a9 | 288 | k = amb_num_from_reg(i, j); |
298c7524 DW |
289 | if (!(c & 0x1)) |
290 | continue; | |
291 | d++; | |
292 | ||
963d96b5 DW |
293 | /* sysfs label */ |
294 | iattr = data->attrs + data->num_attrs; | |
295 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
296 | "temp%d_label", d); | |
297 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
298 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; | |
299 | iattr->s_attr.dev_attr.show = show_label; | |
300 | iattr->s_attr.index = k; | |
0e6c7870 | 301 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
963d96b5 DW |
302 | res = device_create_file(&pdev->dev, |
303 | &iattr->s_attr.dev_attr); | |
304 | if (res) | |
305 | goto exit_remove; | |
306 | data->num_attrs++; | |
307 | ||
298c7524 DW |
308 | /* Temperature sysfs knob */ |
309 | iattr = data->attrs + data->num_attrs; | |
310 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
311 | "temp%d_input", d); | |
312 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
313 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; | |
314 | iattr->s_attr.dev_attr.show = show_amb_temp; | |
315 | iattr->s_attr.index = k; | |
0e6c7870 | 316 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
298c7524 DW |
317 | res = device_create_file(&pdev->dev, |
318 | &iattr->s_attr.dev_attr); | |
319 | if (res) | |
320 | goto exit_remove; | |
321 | data->num_attrs++; | |
322 | ||
323 | /* Temperature min sysfs knob */ | |
324 | iattr = data->attrs + data->num_attrs; | |
325 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
326 | "temp%d_min", d); | |
327 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
328 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
329 | iattr->s_attr.dev_attr.show = show_amb_min; | |
330 | iattr->s_attr.dev_attr.store = store_amb_min; | |
331 | iattr->s_attr.index = k; | |
0e6c7870 | 332 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
298c7524 DW |
333 | res = device_create_file(&pdev->dev, |
334 | &iattr->s_attr.dev_attr); | |
335 | if (res) | |
336 | goto exit_remove; | |
337 | data->num_attrs++; | |
338 | ||
339 | /* Temperature mid sysfs knob */ | |
340 | iattr = data->attrs + data->num_attrs; | |
341 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
342 | "temp%d_mid", d); | |
343 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
344 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
345 | iattr->s_attr.dev_attr.show = show_amb_mid; | |
346 | iattr->s_attr.dev_attr.store = store_amb_mid; | |
347 | iattr->s_attr.index = k; | |
0e6c7870 | 348 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
298c7524 DW |
349 | res = device_create_file(&pdev->dev, |
350 | &iattr->s_attr.dev_attr); | |
351 | if (res) | |
352 | goto exit_remove; | |
353 | data->num_attrs++; | |
354 | ||
355 | /* Temperature max sysfs knob */ | |
356 | iattr = data->attrs + data->num_attrs; | |
357 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
358 | "temp%d_max", d); | |
359 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
360 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
361 | iattr->s_attr.dev_attr.show = show_amb_max; | |
362 | iattr->s_attr.dev_attr.store = store_amb_max; | |
363 | iattr->s_attr.index = k; | |
0e6c7870 | 364 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
298c7524 DW |
365 | res = device_create_file(&pdev->dev, |
366 | &iattr->s_attr.dev_attr); | |
367 | if (res) | |
368 | goto exit_remove; | |
369 | data->num_attrs++; | |
370 | ||
371 | /* Temperature alarm sysfs knob */ | |
372 | iattr = data->attrs + data->num_attrs; | |
373 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
374 | "temp%d_alarm", d); | |
375 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
376 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; | |
377 | iattr->s_attr.dev_attr.show = show_amb_alarm; | |
378 | iattr->s_attr.index = k; | |
0e6c7870 | 379 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
298c7524 DW |
380 | res = device_create_file(&pdev->dev, |
381 | &iattr->s_attr.dev_attr); | |
382 | if (res) | |
383 | goto exit_remove; | |
384 | data->num_attrs++; | |
385 | } | |
386 | } | |
387 | ||
388 | res = device_create_file(&pdev->dev, &dev_attr_name); | |
389 | if (res) | |
390 | goto exit_remove; | |
391 | ||
392 | data->hwmon_dev = hwmon_device_register(&pdev->dev); | |
393 | if (IS_ERR(data->hwmon_dev)) { | |
394 | res = PTR_ERR(data->hwmon_dev); | |
395 | goto exit_remove; | |
396 | } | |
397 | ||
398 | return res; | |
399 | ||
400 | exit_remove: | |
401 | device_remove_file(&pdev->dev, &dev_attr_name); | |
402 | for (i = 0; i < data->num_attrs; i++) | |
403 | device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr); | |
404 | kfree(data->attrs); | |
405 | ||
406 | return res; | |
407 | } | |
408 | ||
6c931ae1 | 409 | static int i5k_amb_add(void) |
298c7524 DW |
410 | { |
411 | int res = -ENODEV; | |
412 | ||
413 | /* only ever going to be one of these */ | |
414 | amb_pdev = platform_device_alloc(DRVNAME, 0); | |
415 | if (!amb_pdev) | |
416 | return -ENOMEM; | |
417 | ||
418 | res = platform_device_add(amb_pdev); | |
419 | if (res) | |
420 | goto err; | |
421 | return 0; | |
422 | ||
423 | err: | |
424 | platform_device_put(amb_pdev); | |
425 | return res; | |
426 | } | |
427 | ||
6c931ae1 | 428 | static int i5k_find_amb_registers(struct i5k_amb_data *data, |
b8fdaf5a | 429 | unsigned long devid) |
298c7524 DW |
430 | { |
431 | struct pci_dev *pcidev; | |
432 | u32 val32; | |
433 | int res = -ENODEV; | |
434 | ||
435 | /* Find AMB register memory space */ | |
436 | pcidev = pci_get_device(PCI_VENDOR_ID_INTEL, | |
b8fdaf5a | 437 | devid, |
298c7524 DW |
438 | NULL); |
439 | if (!pcidev) | |
440 | return -ENODEV; | |
441 | ||
442 | if (pci_read_config_dword(pcidev, I5K_REG_AMB_BASE_ADDR, &val32)) | |
443 | goto out; | |
444 | data->amb_base = val32; | |
445 | ||
446 | if (pci_read_config_dword(pcidev, I5K_REG_AMB_LEN_ADDR, &val32)) | |
447 | goto out; | |
448 | data->amb_len = val32; | |
449 | ||
450 | /* Is it big enough? */ | |
451 | if (data->amb_len < AMB_CONFIG_SIZE * MAX_AMBS) { | |
452 | dev_err(&pcidev->dev, "AMB region too small!\n"); | |
453 | goto out; | |
454 | } | |
455 | ||
456 | res = 0; | |
457 | out: | |
458 | pci_dev_put(pcidev); | |
459 | return res; | |
460 | } | |
461 | ||
6c931ae1 | 462 | static int i5k_channel_probe(u16 *amb_present, unsigned long dev_id) |
298c7524 DW |
463 | { |
464 | struct pci_dev *pcidev; | |
465 | u16 val16; | |
466 | int res = -ENODEV; | |
467 | ||
468 | /* Copy the DIMM presence map for these two channels */ | |
469 | pcidev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL); | |
470 | if (!pcidev) | |
471 | return -ENODEV; | |
472 | ||
473 | if (pci_read_config_word(pcidev, I5K_REG_CHAN0_PRESENCE_ADDR, &val16)) | |
474 | goto out; | |
475 | amb_present[0] = val16; | |
476 | ||
477 | if (pci_read_config_word(pcidev, I5K_REG_CHAN1_PRESENCE_ADDR, &val16)) | |
478 | goto out; | |
479 | amb_present[1] = val16; | |
480 | ||
481 | res = 0; | |
482 | ||
483 | out: | |
484 | pci_dev_put(pcidev); | |
485 | return res; | |
486 | } | |
487 | ||
b4cb0d4d JD |
488 | static struct { |
489 | unsigned long err; | |
490 | unsigned long fbd0; | |
a5977246 | 491 | } chipset_ids[] = { |
b4cb0d4d JD |
492 | { PCI_DEVICE_ID_INTEL_5000_ERR, PCI_DEVICE_ID_INTEL_5000_FBD0 }, |
493 | { PCI_DEVICE_ID_INTEL_5400_ERR, PCI_DEVICE_ID_INTEL_5400_FBD0 }, | |
494 | { 0, 0 } | |
b8fdaf5a DW |
495 | }; |
496 | ||
c48a2916 | 497 | #ifdef MODULE |
a5977246 | 498 | static struct pci_device_id i5k_amb_ids[] = { |
6e31eb2b DW |
499 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) }, |
500 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5400_ERR) }, | |
501 | { 0, } | |
502 | }; | |
503 | MODULE_DEVICE_TABLE(pci, i5k_amb_ids); | |
c48a2916 | 504 | #endif |
6e31eb2b | 505 | |
6c931ae1 | 506 | static int i5k_amb_probe(struct platform_device *pdev) |
298c7524 DW |
507 | { |
508 | struct i5k_amb_data *data; | |
509 | struct resource *reso; | |
b4cb0d4d | 510 | int i, res; |
298c7524 DW |
511 | |
512 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
513 | if (!data) | |
514 | return -ENOMEM; | |
515 | ||
516 | /* Figure out where the AMB registers live */ | |
b8fdaf5a DW |
517 | i = 0; |
518 | do { | |
b4cb0d4d JD |
519 | res = i5k_find_amb_registers(data, chipset_ids[i].err); |
520 | if (res == 0) | |
521 | break; | |
b8fdaf5a | 522 | i++; |
b4cb0d4d | 523 | } while (chipset_ids[i].err); |
b8fdaf5a | 524 | |
298c7524 DW |
525 | if (res) |
526 | goto err; | |
527 | ||
528 | /* Copy the DIMM presence map for the first two channels */ | |
b4cb0d4d | 529 | res = i5k_channel_probe(&data->amb_present[0], chipset_ids[i].fbd0); |
298c7524 DW |
530 | if (res) |
531 | goto err; | |
532 | ||
533 | /* Copy the DIMM presence map for the optional second two channels */ | |
b4cb0d4d | 534 | i5k_channel_probe(&data->amb_present[2], chipset_ids[i].fbd0 + 1); |
298c7524 DW |
535 | |
536 | /* Set up resource regions */ | |
537 | reso = request_mem_region(data->amb_base, data->amb_len, DRVNAME); | |
538 | if (!reso) { | |
539 | res = -EBUSY; | |
540 | goto err; | |
541 | } | |
542 | ||
543 | data->amb_mmio = ioremap_nocache(data->amb_base, data->amb_len); | |
544 | if (!data->amb_mmio) { | |
545 | res = -EBUSY; | |
546 | goto err_map_failed; | |
547 | } | |
548 | ||
549 | platform_set_drvdata(pdev, data); | |
550 | ||
551 | res = i5k_amb_hwmon_init(pdev); | |
552 | if (res) | |
553 | goto err_init_failed; | |
554 | ||
555 | return res; | |
556 | ||
557 | err_init_failed: | |
558 | iounmap(data->amb_mmio); | |
298c7524 DW |
559 | err_map_failed: |
560 | release_mem_region(data->amb_base, data->amb_len); | |
561 | err: | |
562 | kfree(data); | |
563 | return res; | |
564 | } | |
565 | ||
281dfd0b | 566 | static int i5k_amb_remove(struct platform_device *pdev) |
298c7524 DW |
567 | { |
568 | int i; | |
569 | struct i5k_amb_data *data = platform_get_drvdata(pdev); | |
570 | ||
571 | hwmon_device_unregister(data->hwmon_dev); | |
572 | device_remove_file(&pdev->dev, &dev_attr_name); | |
573 | for (i = 0; i < data->num_attrs; i++) | |
574 | device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr); | |
575 | kfree(data->attrs); | |
576 | iounmap(data->amb_mmio); | |
577 | release_mem_region(data->amb_base, data->amb_len); | |
298c7524 DW |
578 | kfree(data); |
579 | return 0; | |
580 | } | |
581 | ||
582 | static struct platform_driver i5k_amb_driver = { | |
583 | .driver = { | |
584 | .owner = THIS_MODULE, | |
585 | .name = DRVNAME, | |
586 | }, | |
587 | .probe = i5k_amb_probe, | |
9e5e9b7a | 588 | .remove = i5k_amb_remove, |
298c7524 DW |
589 | }; |
590 | ||
591 | static int __init i5k_amb_init(void) | |
592 | { | |
593 | int res; | |
594 | ||
595 | res = platform_driver_register(&i5k_amb_driver); | |
596 | if (res) | |
597 | return res; | |
598 | ||
599 | res = i5k_amb_add(); | |
600 | if (res) | |
601 | platform_driver_unregister(&i5k_amb_driver); | |
602 | ||
603 | return res; | |
604 | } | |
605 | ||
606 | static void __exit i5k_amb_exit(void) | |
607 | { | |
608 | platform_device_unregister(amb_pdev); | |
609 | platform_driver_unregister(&i5k_amb_driver); | |
610 | } | |
611 | ||
5407e051 | 612 | MODULE_AUTHOR("Darrick J. Wong <darrick.wong@oracle.com>"); |
298c7524 DW |
613 | MODULE_DESCRIPTION("Intel 5000 chipset FB-DIMM AMB temperature sensor"); |
614 | MODULE_LICENSE("GPL"); | |
615 | ||
616 | module_init(i5k_amb_init); | |
617 | module_exit(i5k_amb_exit); |