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 | ||
3edf03b3 | 117 | static ssize_t name_show(struct device *dev, struct device_attribute *devattr, |
298c7524 DW |
118 | char *buf) |
119 | { | |
120 | return sprintf(buf, "%s\n", DRVNAME); | |
121 | } | |
122 | ||
123 | ||
3edf03b3 | 124 | static DEVICE_ATTR_RO(name); |
298c7524 DW |
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 */ | |
6396bb22 KC |
277 | data->attrs = kzalloc(array3_size(num_ambs, KNOBS_PER_AMB, |
278 | sizeof(*data->attrs)), | |
279 | GFP_KERNEL); | |
298c7524 DW |
280 | if (!data->attrs) |
281 | return -ENOMEM; | |
282 | data->num_attrs = 0; | |
283 | ||
284 | for (i = 0; i < MAX_MEM_CHANNELS; i++) { | |
285 | c = data->amb_present[i]; | |
286 | for (j = 0; j < REAL_MAX_AMBS_PER_CHANNEL; j++, c >>= 1) { | |
287 | struct i5k_device_attribute *iattr; | |
288 | ||
59a030a9 | 289 | k = amb_num_from_reg(i, j); |
298c7524 DW |
290 | if (!(c & 0x1)) |
291 | continue; | |
292 | d++; | |
293 | ||
963d96b5 DW |
294 | /* sysfs label */ |
295 | iattr = data->attrs + data->num_attrs; | |
296 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
297 | "temp%d_label", d); | |
298 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
299 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; | |
300 | iattr->s_attr.dev_attr.show = show_label; | |
301 | iattr->s_attr.index = k; | |
0e6c7870 | 302 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
963d96b5 DW |
303 | res = device_create_file(&pdev->dev, |
304 | &iattr->s_attr.dev_attr); | |
305 | if (res) | |
306 | goto exit_remove; | |
307 | data->num_attrs++; | |
308 | ||
298c7524 DW |
309 | /* Temperature sysfs knob */ |
310 | iattr = data->attrs + data->num_attrs; | |
311 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
312 | "temp%d_input", d); | |
313 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
314 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; | |
315 | iattr->s_attr.dev_attr.show = show_amb_temp; | |
316 | iattr->s_attr.index = k; | |
0e6c7870 | 317 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
298c7524 DW |
318 | res = device_create_file(&pdev->dev, |
319 | &iattr->s_attr.dev_attr); | |
320 | if (res) | |
321 | goto exit_remove; | |
322 | data->num_attrs++; | |
323 | ||
324 | /* Temperature min sysfs knob */ | |
325 | iattr = data->attrs + data->num_attrs; | |
326 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
327 | "temp%d_min", d); | |
328 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
329 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
330 | iattr->s_attr.dev_attr.show = show_amb_min; | |
331 | iattr->s_attr.dev_attr.store = store_amb_min; | |
332 | iattr->s_attr.index = k; | |
0e6c7870 | 333 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
298c7524 DW |
334 | res = device_create_file(&pdev->dev, |
335 | &iattr->s_attr.dev_attr); | |
336 | if (res) | |
337 | goto exit_remove; | |
338 | data->num_attrs++; | |
339 | ||
340 | /* Temperature mid sysfs knob */ | |
341 | iattr = data->attrs + data->num_attrs; | |
342 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
343 | "temp%d_mid", d); | |
344 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
345 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
346 | iattr->s_attr.dev_attr.show = show_amb_mid; | |
347 | iattr->s_attr.dev_attr.store = store_amb_mid; | |
348 | iattr->s_attr.index = k; | |
0e6c7870 | 349 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
298c7524 DW |
350 | res = device_create_file(&pdev->dev, |
351 | &iattr->s_attr.dev_attr); | |
352 | if (res) | |
353 | goto exit_remove; | |
354 | data->num_attrs++; | |
355 | ||
356 | /* Temperature max sysfs knob */ | |
357 | iattr = data->attrs + data->num_attrs; | |
358 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
359 | "temp%d_max", d); | |
360 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
361 | iattr->s_attr.dev_attr.attr.mode = S_IWUSR | S_IRUGO; | |
362 | iattr->s_attr.dev_attr.show = show_amb_max; | |
363 | iattr->s_attr.dev_attr.store = store_amb_max; | |
364 | iattr->s_attr.index = k; | |
0e6c7870 | 365 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
298c7524 DW |
366 | res = device_create_file(&pdev->dev, |
367 | &iattr->s_attr.dev_attr); | |
368 | if (res) | |
369 | goto exit_remove; | |
370 | data->num_attrs++; | |
371 | ||
372 | /* Temperature alarm sysfs knob */ | |
373 | iattr = data->attrs + data->num_attrs; | |
374 | snprintf(iattr->name, AMB_SYSFS_NAME_LEN, | |
375 | "temp%d_alarm", d); | |
376 | iattr->s_attr.dev_attr.attr.name = iattr->name; | |
377 | iattr->s_attr.dev_attr.attr.mode = S_IRUGO; | |
378 | iattr->s_attr.dev_attr.show = show_amb_alarm; | |
379 | iattr->s_attr.index = k; | |
0e6c7870 | 380 | sysfs_attr_init(&iattr->s_attr.dev_attr.attr); |
298c7524 DW |
381 | res = device_create_file(&pdev->dev, |
382 | &iattr->s_attr.dev_attr); | |
383 | if (res) | |
384 | goto exit_remove; | |
385 | data->num_attrs++; | |
386 | } | |
387 | } | |
388 | ||
389 | res = device_create_file(&pdev->dev, &dev_attr_name); | |
390 | if (res) | |
391 | goto exit_remove; | |
392 | ||
393 | data->hwmon_dev = hwmon_device_register(&pdev->dev); | |
394 | if (IS_ERR(data->hwmon_dev)) { | |
395 | res = PTR_ERR(data->hwmon_dev); | |
396 | goto exit_remove; | |
397 | } | |
398 | ||
399 | return res; | |
400 | ||
401 | exit_remove: | |
402 | device_remove_file(&pdev->dev, &dev_attr_name); | |
403 | for (i = 0; i < data->num_attrs; i++) | |
404 | device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr); | |
405 | kfree(data->attrs); | |
406 | ||
407 | return res; | |
408 | } | |
409 | ||
6c931ae1 | 410 | static int i5k_amb_add(void) |
298c7524 DW |
411 | { |
412 | int res = -ENODEV; | |
413 | ||
414 | /* only ever going to be one of these */ | |
415 | amb_pdev = platform_device_alloc(DRVNAME, 0); | |
416 | if (!amb_pdev) | |
417 | return -ENOMEM; | |
418 | ||
419 | res = platform_device_add(amb_pdev); | |
420 | if (res) | |
421 | goto err; | |
422 | return 0; | |
423 | ||
424 | err: | |
425 | platform_device_put(amb_pdev); | |
426 | return res; | |
427 | } | |
428 | ||
6c931ae1 | 429 | static int i5k_find_amb_registers(struct i5k_amb_data *data, |
b8fdaf5a | 430 | unsigned long devid) |
298c7524 DW |
431 | { |
432 | struct pci_dev *pcidev; | |
433 | u32 val32; | |
434 | int res = -ENODEV; | |
435 | ||
436 | /* Find AMB register memory space */ | |
437 | pcidev = pci_get_device(PCI_VENDOR_ID_INTEL, | |
b8fdaf5a | 438 | devid, |
298c7524 DW |
439 | NULL); |
440 | if (!pcidev) | |
441 | return -ENODEV; | |
442 | ||
443 | if (pci_read_config_dword(pcidev, I5K_REG_AMB_BASE_ADDR, &val32)) | |
444 | goto out; | |
445 | data->amb_base = val32; | |
446 | ||
447 | if (pci_read_config_dword(pcidev, I5K_REG_AMB_LEN_ADDR, &val32)) | |
448 | goto out; | |
449 | data->amb_len = val32; | |
450 | ||
451 | /* Is it big enough? */ | |
452 | if (data->amb_len < AMB_CONFIG_SIZE * MAX_AMBS) { | |
453 | dev_err(&pcidev->dev, "AMB region too small!\n"); | |
454 | goto out; | |
455 | } | |
456 | ||
457 | res = 0; | |
458 | out: | |
459 | pci_dev_put(pcidev); | |
460 | return res; | |
461 | } | |
462 | ||
6c931ae1 | 463 | static int i5k_channel_probe(u16 *amb_present, unsigned long dev_id) |
298c7524 DW |
464 | { |
465 | struct pci_dev *pcidev; | |
466 | u16 val16; | |
467 | int res = -ENODEV; | |
468 | ||
469 | /* Copy the DIMM presence map for these two channels */ | |
470 | pcidev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL); | |
471 | if (!pcidev) | |
472 | return -ENODEV; | |
473 | ||
474 | if (pci_read_config_word(pcidev, I5K_REG_CHAN0_PRESENCE_ADDR, &val16)) | |
475 | goto out; | |
476 | amb_present[0] = val16; | |
477 | ||
478 | if (pci_read_config_word(pcidev, I5K_REG_CHAN1_PRESENCE_ADDR, &val16)) | |
479 | goto out; | |
480 | amb_present[1] = val16; | |
481 | ||
482 | res = 0; | |
483 | ||
484 | out: | |
485 | pci_dev_put(pcidev); | |
486 | return res; | |
487 | } | |
488 | ||
b4cb0d4d JD |
489 | static struct { |
490 | unsigned long err; | |
491 | unsigned long fbd0; | |
a5977246 | 492 | } chipset_ids[] = { |
b4cb0d4d JD |
493 | { PCI_DEVICE_ID_INTEL_5000_ERR, PCI_DEVICE_ID_INTEL_5000_FBD0 }, |
494 | { PCI_DEVICE_ID_INTEL_5400_ERR, PCI_DEVICE_ID_INTEL_5400_FBD0 }, | |
495 | { 0, 0 } | |
b8fdaf5a DW |
496 | }; |
497 | ||
c48a2916 | 498 | #ifdef MODULE |
4d3f2414 | 499 | static const struct pci_device_id i5k_amb_ids[] = { |
6e31eb2b DW |
500 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) }, |
501 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5400_ERR) }, | |
502 | { 0, } | |
503 | }; | |
504 | MODULE_DEVICE_TABLE(pci, i5k_amb_ids); | |
c48a2916 | 505 | #endif |
6e31eb2b | 506 | |
6c931ae1 | 507 | static int i5k_amb_probe(struct platform_device *pdev) |
298c7524 DW |
508 | { |
509 | struct i5k_amb_data *data; | |
510 | struct resource *reso; | |
b4cb0d4d | 511 | int i, res; |
298c7524 DW |
512 | |
513 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
514 | if (!data) | |
515 | return -ENOMEM; | |
516 | ||
517 | /* Figure out where the AMB registers live */ | |
b8fdaf5a DW |
518 | i = 0; |
519 | do { | |
b4cb0d4d JD |
520 | res = i5k_find_amb_registers(data, chipset_ids[i].err); |
521 | if (res == 0) | |
522 | break; | |
b8fdaf5a | 523 | i++; |
b4cb0d4d | 524 | } while (chipset_ids[i].err); |
b8fdaf5a | 525 | |
298c7524 DW |
526 | if (res) |
527 | goto err; | |
528 | ||
529 | /* Copy the DIMM presence map for the first two channels */ | |
b4cb0d4d | 530 | res = i5k_channel_probe(&data->amb_present[0], chipset_ids[i].fbd0); |
298c7524 DW |
531 | if (res) |
532 | goto err; | |
533 | ||
534 | /* Copy the DIMM presence map for the optional second two channels */ | |
b4cb0d4d | 535 | i5k_channel_probe(&data->amb_present[2], chipset_ids[i].fbd0 + 1); |
298c7524 DW |
536 | |
537 | /* Set up resource regions */ | |
538 | reso = request_mem_region(data->amb_base, data->amb_len, DRVNAME); | |
539 | if (!reso) { | |
540 | res = -EBUSY; | |
541 | goto err; | |
542 | } | |
543 | ||
544 | data->amb_mmio = ioremap_nocache(data->amb_base, data->amb_len); | |
545 | if (!data->amb_mmio) { | |
546 | res = -EBUSY; | |
547 | goto err_map_failed; | |
548 | } | |
549 | ||
550 | platform_set_drvdata(pdev, data); | |
551 | ||
552 | res = i5k_amb_hwmon_init(pdev); | |
553 | if (res) | |
554 | goto err_init_failed; | |
555 | ||
556 | return res; | |
557 | ||
558 | err_init_failed: | |
559 | iounmap(data->amb_mmio); | |
298c7524 DW |
560 | err_map_failed: |
561 | release_mem_region(data->amb_base, data->amb_len); | |
562 | err: | |
563 | kfree(data); | |
564 | return res; | |
565 | } | |
566 | ||
281dfd0b | 567 | static int i5k_amb_remove(struct platform_device *pdev) |
298c7524 DW |
568 | { |
569 | int i; | |
570 | struct i5k_amb_data *data = platform_get_drvdata(pdev); | |
571 | ||
572 | hwmon_device_unregister(data->hwmon_dev); | |
573 | device_remove_file(&pdev->dev, &dev_attr_name); | |
574 | for (i = 0; i < data->num_attrs; i++) | |
575 | device_remove_file(&pdev->dev, &data->attrs[i].s_attr.dev_attr); | |
576 | kfree(data->attrs); | |
577 | iounmap(data->amb_mmio); | |
578 | release_mem_region(data->amb_base, data->amb_len); | |
298c7524 DW |
579 | kfree(data); |
580 | return 0; | |
581 | } | |
582 | ||
583 | static struct platform_driver i5k_amb_driver = { | |
584 | .driver = { | |
298c7524 DW |
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); |