xref: /linux/drivers/edac/e7xxx_edac.c (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)
1 /*
2  * Intel e7xxx Memory Controller kernel module
3  * (C) 2003 Linux Networx (http://lnxi.com)
4  * This file may be distributed under the terms of the
5  * GNU General Public License.
6  *
7  * See "enum e7xxx_chips" below for supported chipsets
8  *
9  * Written by Thayne Harbaugh
10  * Based on work by Dan Hollis <goemon at anime dot net> and others.
11  *	http://www.anime.net/~goemon/linux-ecc/
12  *
13  * Datasheet:
14  *	http://www.intel.com/content/www/us/en/chipsets/e7501-chipset-memory-controller-hub-datasheet.html
15  *
16  * Contributors:
17  *	Eric Biederman (Linux Networx)
18  *	Tom Zimmerman (Linux Networx)
19  *	Jim Garlick (Lawrence Livermore National Labs)
20  *	Dave Peterson (Lawrence Livermore National Labs)
21  *	That One Guy (Some other place)
22  *	Wang Zhenyu (intel.com)
23  *
24  * $Id: edac_e7xxx.c,v 1.5.2.9 2005/10/05 00:43:44 dsp_llnl Exp $
25  *
26  */
27 
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/pci.h>
31 #include <linux/pci_ids.h>
32 #include <linux/edac.h>
33 #include "edac_module.h"
34 
35 #define	EDAC_MOD_STR	"e7xxx_edac"
36 
37 #define e7xxx_printk(level, fmt, arg...) \
38 	edac_printk(level, "e7xxx", fmt, ##arg)
39 
40 #define e7xxx_mc_printk(mci, level, fmt, arg...) \
41 	edac_mc_chipset_printk(mci, level, "e7xxx", fmt, ##arg)
42 
43 #ifndef PCI_DEVICE_ID_INTEL_7205_0
44 #define PCI_DEVICE_ID_INTEL_7205_0	0x255d
45 #endif				/* PCI_DEVICE_ID_INTEL_7205_0 */
46 
47 #ifndef PCI_DEVICE_ID_INTEL_7205_1_ERR
48 #define PCI_DEVICE_ID_INTEL_7205_1_ERR	0x2551
49 #endif				/* PCI_DEVICE_ID_INTEL_7205_1_ERR */
50 
51 #ifndef PCI_DEVICE_ID_INTEL_7500_0
52 #define PCI_DEVICE_ID_INTEL_7500_0	0x2540
53 #endif				/* PCI_DEVICE_ID_INTEL_7500_0 */
54 
55 #ifndef PCI_DEVICE_ID_INTEL_7500_1_ERR
56 #define PCI_DEVICE_ID_INTEL_7500_1_ERR	0x2541
57 #endif				/* PCI_DEVICE_ID_INTEL_7500_1_ERR */
58 
59 #ifndef PCI_DEVICE_ID_INTEL_7501_0
60 #define PCI_DEVICE_ID_INTEL_7501_0	0x254c
61 #endif				/* PCI_DEVICE_ID_INTEL_7501_0 */
62 
63 #ifndef PCI_DEVICE_ID_INTEL_7501_1_ERR
64 #define PCI_DEVICE_ID_INTEL_7501_1_ERR	0x2541
65 #endif				/* PCI_DEVICE_ID_INTEL_7501_1_ERR */
66 
67 #ifndef PCI_DEVICE_ID_INTEL_7505_0
68 #define PCI_DEVICE_ID_INTEL_7505_0	0x2550
69 #endif				/* PCI_DEVICE_ID_INTEL_7505_0 */
70 
71 #ifndef PCI_DEVICE_ID_INTEL_7505_1_ERR
72 #define PCI_DEVICE_ID_INTEL_7505_1_ERR	0x2551
73 #endif				/* PCI_DEVICE_ID_INTEL_7505_1_ERR */
74 
75 #define E7XXX_NR_CSROWS		8	/* number of csrows */
76 #define E7XXX_NR_DIMMS		8	/* 2 channels, 4 dimms/channel */
77 
78 /* E7XXX register addresses - device 0 function 0 */
79 #define E7XXX_DRB		0x60	/* DRAM row boundary register (8b) */
80 #define E7XXX_DRA		0x70	/* DRAM row attribute register (8b) */
81 					/*
82 					 * 31   Device width row 7 0=x8 1=x4
83 					 * 27   Device width row 6
84 					 * 23   Device width row 5
85 					 * 19   Device width row 4
86 					 * 15   Device width row 3
87 					 * 11   Device width row 2
88 					 *  7   Device width row 1
89 					 *  3   Device width row 0
90 					 */
91 #define E7XXX_DRC		0x7C	/* DRAM controller mode reg (32b) */
92 					/*
93 					 * 22    Number channels 0=1,1=2
94 					 * 19:18 DRB Granularity 32/64MB
95 					 */
96 #define E7XXX_TOLM		0xC4	/* DRAM top of low memory reg (16b) */
97 #define E7XXX_REMAPBASE		0xC6	/* DRAM remap base address reg (16b) */
98 #define E7XXX_REMAPLIMIT	0xC8	/* DRAM remap limit address reg (16b) */
99 
100 /* E7XXX register addresses - device 0 function 1 */
101 #define E7XXX_DRAM_FERR		0x80	/* DRAM first error register (8b) */
102 #define E7XXX_DRAM_NERR		0x82	/* DRAM next error register (8b) */
103 #define E7XXX_DRAM_CELOG_ADD	0xA0	/* DRAM first correctable memory */
104 					/*     error address register (32b) */
105 					/*
106 					 * 31:28 Reserved
107 					 * 27:6  CE address (4k block 33:12)
108 					 *  5:0  Reserved
109 					 */
110 #define E7XXX_DRAM_UELOG_ADD	0xB0	/* DRAM first uncorrectable memory */
111 					/*     error address register (32b) */
112 					/*
113 					 * 31:28 Reserved
114 					 * 27:6  CE address (4k block 33:12)
115 					 *  5:0  Reserved
116 					 */
117 #define E7XXX_DRAM_CELOG_SYNDROME 0xD0	/* DRAM first correctable memory */
118 					/*     error syndrome register (16b) */
119 
120 enum e7xxx_chips {
121 	E7500 = 0,
122 	E7501,
123 	E7505,
124 	E7205,
125 };
126 
127 struct e7xxx_pvt {
128 	struct pci_dev *bridge_ck;
129 	u32 tolm;
130 	u32 remapbase;
131 	u32 remaplimit;
132 	const struct e7xxx_dev_info *dev_info;
133 };
134 
135 struct e7xxx_dev_info {
136 	u16 err_dev;
137 	const char *ctl_name;
138 };
139 
140 struct e7xxx_error_info {
141 	u8 dram_ferr;
142 	u8 dram_nerr;
143 	u32 dram_celog_add;
144 	u16 dram_celog_syndrome;
145 	u32 dram_uelog_add;
146 };
147 
148 static struct edac_pci_ctl_info *e7xxx_pci;
149 
150 static const struct e7xxx_dev_info e7xxx_devs[] = {
151 	[E7500] = {
152 		.err_dev = PCI_DEVICE_ID_INTEL_7500_1_ERR,
153 		.ctl_name = "E7500"},
154 	[E7501] = {
155 		.err_dev = PCI_DEVICE_ID_INTEL_7501_1_ERR,
156 		.ctl_name = "E7501"},
157 	[E7505] = {
158 		.err_dev = PCI_DEVICE_ID_INTEL_7505_1_ERR,
159 		.ctl_name = "E7505"},
160 	[E7205] = {
161 		.err_dev = PCI_DEVICE_ID_INTEL_7205_1_ERR,
162 		.ctl_name = "E7205"},
163 };
164 
165 /* FIXME - is this valid for both SECDED and S4ECD4ED? */
e7xxx_find_channel(u16 syndrome)166 static inline int e7xxx_find_channel(u16 syndrome)
167 {
168 	edac_dbg(3, "\n");
169 
170 	if ((syndrome & 0xff00) == 0)
171 		return 0;
172 
173 	if ((syndrome & 0x00ff) == 0)
174 		return 1;
175 
176 	if ((syndrome & 0xf000) == 0 || (syndrome & 0x0f00) == 0)
177 		return 0;
178 
179 	return 1;
180 }
181 
ctl_page_to_phys(struct mem_ctl_info * mci,unsigned long page)182 static unsigned long ctl_page_to_phys(struct mem_ctl_info *mci,
183 				unsigned long page)
184 {
185 	u32 remap;
186 	struct e7xxx_pvt *pvt = (struct e7xxx_pvt *)mci->pvt_info;
187 
188 	edac_dbg(3, "\n");
189 
190 	if ((page < pvt->tolm) ||
191 		((page >= 0x100000) && (page < pvt->remapbase)))
192 		return page;
193 
194 	remap = (page - pvt->tolm) + pvt->remapbase;
195 
196 	if (remap < pvt->remaplimit)
197 		return remap;
198 
199 	e7xxx_printk(KERN_ERR, "Invalid page %lx - out of range\n", page);
200 	return pvt->tolm - 1;
201 }
202 
process_ce(struct mem_ctl_info * mci,struct e7xxx_error_info * info)203 static void process_ce(struct mem_ctl_info *mci, struct e7xxx_error_info *info)
204 {
205 	u32 error_1b, page;
206 	u16 syndrome;
207 	int row;
208 	int channel;
209 
210 	edac_dbg(3, "\n");
211 	/* read the error address */
212 	error_1b = info->dram_celog_add;
213 	/* FIXME - should use PAGE_SHIFT */
214 	page = error_1b >> 6;	/* convert the address to 4k page */
215 	/* read the syndrome */
216 	syndrome = info->dram_celog_syndrome;
217 	/* FIXME - check for -1 */
218 	row = edac_mc_find_csrow_by_page(mci, page);
219 	/* convert syndrome to channel */
220 	channel = e7xxx_find_channel(syndrome);
221 	edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, page, 0, syndrome,
222 			     row, channel, -1, "e7xxx CE", "");
223 }
224 
process_ce_no_info(struct mem_ctl_info * mci)225 static void process_ce_no_info(struct mem_ctl_info *mci)
226 {
227 	edac_dbg(3, "\n");
228 	edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, 0, 0, 0, -1, -1, -1,
229 			     "e7xxx CE log register overflow", "");
230 }
231 
process_ue(struct mem_ctl_info * mci,struct e7xxx_error_info * info)232 static void process_ue(struct mem_ctl_info *mci, struct e7xxx_error_info *info)
233 {
234 	u32 error_2b, block_page;
235 	int row;
236 
237 	edac_dbg(3, "\n");
238 	/* read the error address */
239 	error_2b = info->dram_uelog_add;
240 	/* FIXME - should use PAGE_SHIFT */
241 	block_page = error_2b >> 6;	/* convert to 4k address */
242 	row = edac_mc_find_csrow_by_page(mci, block_page);
243 
244 	edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, block_page, 0, 0,
245 			     row, -1, -1, "e7xxx UE", "");
246 }
247 
process_ue_no_info(struct mem_ctl_info * mci)248 static void process_ue_no_info(struct mem_ctl_info *mci)
249 {
250 	edac_dbg(3, "\n");
251 
252 	edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, 0, 0, 0, -1, -1, -1,
253 			     "e7xxx UE log register overflow", "");
254 }
255 
e7xxx_get_error_info(struct mem_ctl_info * mci,struct e7xxx_error_info * info)256 static void e7xxx_get_error_info(struct mem_ctl_info *mci,
257 				 struct e7xxx_error_info *info)
258 {
259 	struct e7xxx_pvt *pvt;
260 
261 	pvt = (struct e7xxx_pvt *)mci->pvt_info;
262 	pci_read_config_byte(pvt->bridge_ck, E7XXX_DRAM_FERR, &info->dram_ferr);
263 	pci_read_config_byte(pvt->bridge_ck, E7XXX_DRAM_NERR, &info->dram_nerr);
264 
265 	if ((info->dram_ferr & 1) || (info->dram_nerr & 1)) {
266 		pci_read_config_dword(pvt->bridge_ck, E7XXX_DRAM_CELOG_ADD,
267 				&info->dram_celog_add);
268 		pci_read_config_word(pvt->bridge_ck,
269 				E7XXX_DRAM_CELOG_SYNDROME,
270 				&info->dram_celog_syndrome);
271 	}
272 
273 	if ((info->dram_ferr & 2) || (info->dram_nerr & 2))
274 		pci_read_config_dword(pvt->bridge_ck, E7XXX_DRAM_UELOG_ADD,
275 				&info->dram_uelog_add);
276 
277 	if (info->dram_ferr & 3)
278 		pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_FERR, 0x03, 0x03);
279 
280 	if (info->dram_nerr & 3)
281 		pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_NERR, 0x03, 0x03);
282 }
283 
e7xxx_process_error_info(struct mem_ctl_info * mci,struct e7xxx_error_info * info,int handle_errors)284 static int e7xxx_process_error_info(struct mem_ctl_info *mci,
285 				struct e7xxx_error_info *info,
286 				int handle_errors)
287 {
288 	int error_found;
289 
290 	error_found = 0;
291 
292 	/* decode and report errors */
293 	if (info->dram_ferr & 1) {	/* check first error correctable */
294 		error_found = 1;
295 
296 		if (handle_errors)
297 			process_ce(mci, info);
298 	}
299 
300 	if (info->dram_ferr & 2) {	/* check first error uncorrectable */
301 		error_found = 1;
302 
303 		if (handle_errors)
304 			process_ue(mci, info);
305 	}
306 
307 	if (info->dram_nerr & 1) {	/* check next error correctable */
308 		error_found = 1;
309 
310 		if (handle_errors) {
311 			if (info->dram_ferr & 1)
312 				process_ce_no_info(mci);
313 			else
314 				process_ce(mci, info);
315 		}
316 	}
317 
318 	if (info->dram_nerr & 2) {	/* check next error uncorrectable */
319 		error_found = 1;
320 
321 		if (handle_errors) {
322 			if (info->dram_ferr & 2)
323 				process_ue_no_info(mci);
324 			else
325 				process_ue(mci, info);
326 		}
327 	}
328 
329 	return error_found;
330 }
331 
e7xxx_check(struct mem_ctl_info * mci)332 static void e7xxx_check(struct mem_ctl_info *mci)
333 {
334 	struct e7xxx_error_info info;
335 
336 	e7xxx_get_error_info(mci, &info);
337 	e7xxx_process_error_info(mci, &info, 1);
338 }
339 
340 /* Return 1 if dual channel mode is active.  Else return 0. */
dual_channel_active(u32 drc,int dev_idx)341 static inline int dual_channel_active(u32 drc, int dev_idx)
342 {
343 	return (dev_idx == E7501) ? ((drc >> 22) & 0x1) : 1;
344 }
345 
346 /* Return DRB granularity (0=32mb, 1=64mb). */
drb_granularity(u32 drc,int dev_idx)347 static inline int drb_granularity(u32 drc, int dev_idx)
348 {
349 	/* only e7501 can be single channel */
350 	return (dev_idx == E7501) ? ((drc >> 18) & 0x3) : 1;
351 }
352 
e7xxx_init_csrows(struct mem_ctl_info * mci,struct pci_dev * pdev,int dev_idx,u32 drc)353 static void e7xxx_init_csrows(struct mem_ctl_info *mci, struct pci_dev *pdev,
354 			int dev_idx, u32 drc)
355 {
356 	unsigned long last_cumul_size;
357 	int index, j;
358 	u8 value;
359 	u32 dra, cumul_size, nr_pages;
360 	int drc_chan, drc_drbg, drc_ddim, mem_dev;
361 	struct csrow_info *csrow;
362 	struct dimm_info *dimm;
363 	enum edac_type edac_mode;
364 
365 	pci_read_config_dword(pdev, E7XXX_DRA, &dra);
366 	drc_chan = dual_channel_active(drc, dev_idx);
367 	drc_drbg = drb_granularity(drc, dev_idx);
368 	drc_ddim = (drc >> 20) & 0x3;
369 	last_cumul_size = 0;
370 
371 	/* The dram row boundary (DRB) reg values are boundary address
372 	 * for each DRAM row with a granularity of 32 or 64MB (single/dual
373 	 * channel operation).  DRB regs are cumulative; therefore DRB7 will
374 	 * contain the total memory contained in all eight rows.
375 	 */
376 	for (index = 0; index < mci->nr_csrows; index++) {
377 		/* mem_dev 0=x8, 1=x4 */
378 		mem_dev = (dra >> (index * 4 + 3)) & 0x1;
379 		csrow = mci->csrows[index];
380 
381 		pci_read_config_byte(pdev, E7XXX_DRB + index, &value);
382 		/* convert a 64 or 32 MiB DRB to a page size. */
383 		cumul_size = value << (25 + drc_drbg - PAGE_SHIFT);
384 		edac_dbg(3, "(%d) cumul_size 0x%x\n", index, cumul_size);
385 		if (cumul_size == last_cumul_size)
386 			continue;	/* not populated */
387 
388 		csrow->first_page = last_cumul_size;
389 		csrow->last_page = cumul_size - 1;
390 		nr_pages = cumul_size - last_cumul_size;
391 		last_cumul_size = cumul_size;
392 
393 		/*
394 		* if single channel or x8 devices then SECDED
395 		* if dual channel and x4 then S4ECD4ED
396 		*/
397 		if (drc_ddim) {
398 			if (drc_chan && mem_dev) {
399 				edac_mode = EDAC_S4ECD4ED;
400 				mci->edac_cap |= EDAC_FLAG_S4ECD4ED;
401 			} else {
402 				edac_mode = EDAC_SECDED;
403 				mci->edac_cap |= EDAC_FLAG_SECDED;
404 			}
405 		} else
406 			edac_mode = EDAC_NONE;
407 
408 		for (j = 0; j < drc_chan + 1; j++) {
409 			dimm = csrow->channels[j]->dimm;
410 
411 			dimm->nr_pages = nr_pages / (drc_chan + 1);
412 			dimm->grain = 1 << 12;	/* 4KiB - resolution of CELOG */
413 			dimm->mtype = MEM_RDDR;	/* only one type supported */
414 			dimm->dtype = mem_dev ? DEV_X4 : DEV_X8;
415 			dimm->edac_mode = edac_mode;
416 		}
417 	}
418 }
419 
e7xxx_probe1(struct pci_dev * pdev,int dev_idx)420 static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx)
421 {
422 	u16 pci_data;
423 	struct mem_ctl_info *mci = NULL;
424 	struct edac_mc_layer layers[2];
425 	struct e7xxx_pvt *pvt = NULL;
426 	u32 drc;
427 	int drc_chan;
428 	struct e7xxx_error_info discard;
429 
430 	edac_dbg(0, "mci\n");
431 
432 	pci_read_config_dword(pdev, E7XXX_DRC, &drc);
433 
434 	drc_chan = dual_channel_active(drc, dev_idx);
435 	/*
436 	 * According with the datasheet, this device has a maximum of
437 	 * 4 DIMMS per channel, either single-rank or dual-rank. So, the
438 	 * total amount of dimms is 8 (E7XXX_NR_DIMMS).
439 	 * That means that the DIMM is mapped as CSROWs, and the channel
440 	 * will map the rank. So, an error to either channel should be
441 	 * attributed to the same dimm.
442 	 */
443 	layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
444 	layers[0].size = E7XXX_NR_CSROWS;
445 	layers[0].is_virt_csrow = true;
446 	layers[1].type = EDAC_MC_LAYER_CHANNEL;
447 	layers[1].size = drc_chan + 1;
448 	layers[1].is_virt_csrow = false;
449 	mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, sizeof(*pvt));
450 	if (mci == NULL)
451 		return -ENOMEM;
452 
453 	edac_dbg(3, "init mci\n");
454 	mci->mtype_cap = MEM_FLAG_RDDR;
455 	mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED |
456 		EDAC_FLAG_S4ECD4ED;
457 	/* FIXME - what if different memory types are in different csrows? */
458 	mci->mod_name = EDAC_MOD_STR;
459 	mci->pdev = &pdev->dev;
460 	edac_dbg(3, "init pvt\n");
461 	pvt = (struct e7xxx_pvt *)mci->pvt_info;
462 	pvt->dev_info = &e7xxx_devs[dev_idx];
463 	pvt->bridge_ck = pci_get_device(PCI_VENDOR_ID_INTEL,
464 					pvt->dev_info->err_dev, pvt->bridge_ck);
465 
466 	if (!pvt->bridge_ck) {
467 		e7xxx_printk(KERN_ERR, "error reporting device not found:"
468 			"vendor %x device 0x%x (broken BIOS?)\n",
469 			PCI_VENDOR_ID_INTEL, e7xxx_devs[dev_idx].err_dev);
470 		goto fail0;
471 	}
472 
473 	edac_dbg(3, "more mci init\n");
474 	mci->ctl_name = pvt->dev_info->ctl_name;
475 	mci->dev_name = pci_name(pdev);
476 	mci->edac_check = e7xxx_check;
477 	mci->ctl_page_to_phys = ctl_page_to_phys;
478 	e7xxx_init_csrows(mci, pdev, dev_idx, drc);
479 	mci->edac_cap |= EDAC_FLAG_NONE;
480 	edac_dbg(3, "tolm, remapbase, remaplimit\n");
481 	/* load the top of low memory, remap base, and remap limit vars */
482 	pci_read_config_word(pdev, E7XXX_TOLM, &pci_data);
483 	pvt->tolm = ((u32) pci_data) << 4;
484 	pci_read_config_word(pdev, E7XXX_REMAPBASE, &pci_data);
485 	pvt->remapbase = ((u32) pci_data) << 14;
486 	pci_read_config_word(pdev, E7XXX_REMAPLIMIT, &pci_data);
487 	pvt->remaplimit = ((u32) pci_data) << 14;
488 	e7xxx_printk(KERN_INFO,
489 		"tolm = %x, remapbase = %x, remaplimit = %x\n", pvt->tolm,
490 		pvt->remapbase, pvt->remaplimit);
491 
492 	/* clear any pending errors, or initial state bits */
493 	e7xxx_get_error_info(mci, &discard);
494 
495 	/* Here we assume that we will never see multiple instances of this
496 	 * type of memory controller.  The ID is therefore hardcoded to 0.
497 	 */
498 	if (edac_mc_add_mc(mci)) {
499 		edac_dbg(3, "failed edac_mc_add_mc()\n");
500 		goto fail1;
501 	}
502 
503 	/* allocating generic PCI control info */
504 	e7xxx_pci = edac_pci_create_generic_ctl(&pdev->dev, EDAC_MOD_STR);
505 	if (!e7xxx_pci) {
506 		printk(KERN_WARNING
507 			"%s(): Unable to create PCI control\n",
508 			__func__);
509 		printk(KERN_WARNING
510 			"%s(): PCI error report via EDAC not setup\n",
511 			__func__);
512 	}
513 
514 	/* get this far and it's successful */
515 	edac_dbg(3, "success\n");
516 	return 0;
517 
518 fail1:
519 	pci_dev_put(pvt->bridge_ck);
520 
521 fail0:
522 	edac_mc_free(mci);
523 
524 	return -ENODEV;
525 }
526 
527 /* returns count (>= 0), or negative on error */
e7xxx_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)528 static int e7xxx_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
529 {
530 	edac_dbg(0, "\n");
531 
532 	/* wake up and enable device */
533 	return pci_enable_device(pdev) ?
534 		-EIO : e7xxx_probe1(pdev, ent->driver_data);
535 }
536 
e7xxx_remove_one(struct pci_dev * pdev)537 static void e7xxx_remove_one(struct pci_dev *pdev)
538 {
539 	struct mem_ctl_info *mci;
540 	struct e7xxx_pvt *pvt;
541 
542 	edac_dbg(0, "\n");
543 
544 	if (e7xxx_pci)
545 		edac_pci_release_generic_ctl(e7xxx_pci);
546 
547 	if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)
548 		return;
549 
550 	pvt = (struct e7xxx_pvt *)mci->pvt_info;
551 	pci_dev_put(pvt->bridge_ck);
552 	edac_mc_free(mci);
553 }
554 
555 static const struct pci_device_id e7xxx_pci_tbl[] = {
556 	{
557 	 PCI_VEND_DEV(INTEL, 7205_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
558 	 E7205},
559 	{
560 	 PCI_VEND_DEV(INTEL, 7500_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
561 	 E7500},
562 	{
563 	 PCI_VEND_DEV(INTEL, 7501_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
564 	 E7501},
565 	{
566 	 PCI_VEND_DEV(INTEL, 7505_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
567 	 E7505},
568 	{
569 	 0,
570 	 }			/* 0 terminated list. */
571 };
572 
573 MODULE_DEVICE_TABLE(pci, e7xxx_pci_tbl);
574 
575 static struct pci_driver e7xxx_driver = {
576 	.name = EDAC_MOD_STR,
577 	.probe = e7xxx_init_one,
578 	.remove = e7xxx_remove_one,
579 	.id_table = e7xxx_pci_tbl,
580 };
581 
e7xxx_init(void)582 static int __init e7xxx_init(void)
583 {
584        /* Ensure that the OPSTATE is set correctly for POLL or NMI */
585        opstate_init();
586 
587 	return pci_register_driver(&e7xxx_driver);
588 }
589 
e7xxx_exit(void)590 static void __exit e7xxx_exit(void)
591 {
592 	pci_unregister_driver(&e7xxx_driver);
593 }
594 
595 module_init(e7xxx_init);
596 module_exit(e7xxx_exit);
597 
598 MODULE_LICENSE("GPL");
599 MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh et al");
600 MODULE_DESCRIPTION("MC support for Intel e7xxx memory controllers");
601 module_param(edac_op_state, int, 0444);
602 MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");
603