blob: 031abadc439a37c407d213fd1091b8e9a03b745e [file] [log] [blame]
Alan Cox0d88a102006-01-18 17:44:10 -08001/*
2 * Intel D82875P 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 * Written by Thayne Harbaugh
8 * Contributors:
9 * Wang Zhenyu at intel.com
10 *
11 * $Id: edac_i82875p.c,v 1.5.2.11 2005/10/05 00:43:44 dsp_llnl Exp $
12 *
13 * Note: E7210 appears same as D82875P - zhenyu.z.wang at intel.com
14 */
15
Alan Cox0d88a102006-01-18 17:44:10 -080016#include <linux/module.h>
17#include <linux/init.h>
Alan Cox0d88a102006-01-18 17:44:10 -080018#include <linux/pci.h>
19#include <linux/pci_ids.h>
Alan Cox0d88a102006-01-18 17:44:10 -080020#include <linux/slab.h>
Douglas Thompson20bcb7a2007-07-19 01:49:47 -070021#include "edac_core.h"
Alan Cox0d88a102006-01-18 17:44:10 -080022
Douglas Thompson20bcb7a2007-07-19 01:49:47 -070023#define I82875P_REVISION " Ver: 2.0.2 " __DATE__
Doug Thompson929a40e2006-07-01 04:35:45 -070024#define EDAC_MOD_STR "i82875p_edac"
Doug Thompson37f04582006-06-30 01:56:07 -070025
Dave Peterson537fba22006-03-26 01:38:40 -080026#define i82875p_printk(level, fmt, arg...) \
Dave Petersone7ecd892006-03-26 01:38:52 -080027 edac_printk(level, "i82875p", fmt, ##arg)
Dave Peterson537fba22006-03-26 01:38:40 -080028
29#define i82875p_mc_printk(mci, level, fmt, arg...) \
Dave Petersone7ecd892006-03-26 01:38:52 -080030 edac_mc_chipset_printk(mci, level, "i82875p", fmt, ##arg)
Dave Peterson537fba22006-03-26 01:38:40 -080031
Alan Cox0d88a102006-01-18 17:44:10 -080032#ifndef PCI_DEVICE_ID_INTEL_82875_0
33#define PCI_DEVICE_ID_INTEL_82875_0 0x2578
34#endif /* PCI_DEVICE_ID_INTEL_82875_0 */
35
36#ifndef PCI_DEVICE_ID_INTEL_82875_6
37#define PCI_DEVICE_ID_INTEL_82875_6 0x257e
38#endif /* PCI_DEVICE_ID_INTEL_82875_6 */
39
Alan Cox0d88a102006-01-18 17:44:10 -080040/* four csrows in dual channel, eight in single channel */
41#define I82875P_NR_CSROWS(nr_chans) (8/(nr_chans))
42
Alan Cox0d88a102006-01-18 17:44:10 -080043/* Intel 82875p register addresses - device 0 function 0 - DRAM Controller */
44#define I82875P_EAP 0x58 /* Error Address Pointer (32b)
45 *
46 * 31:12 block address
47 * 11:0 reserved
48 */
49
50#define I82875P_DERRSYN 0x5c /* DRAM Error Syndrome (8b)
51 *
52 * 7:0 DRAM ECC Syndrome
53 */
54
55#define I82875P_DES 0x5d /* DRAM Error Status (8b)
56 *
57 * 7:1 reserved
58 * 0 Error channel 0/1
59 */
60
61#define I82875P_ERRSTS 0xc8 /* Error Status Register (16b)
62 *
63 * 15:10 reserved
64 * 9 non-DRAM lock error (ndlock)
65 * 8 Sftwr Generated SMI
66 * 7 ECC UE
67 * 6 reserved
68 * 5 MCH detects unimplemented cycle
69 * 4 AGP access outside GA
70 * 3 Invalid AGP access
71 * 2 Invalid GA translation table
72 * 1 Unsupported AGP command
73 * 0 ECC CE
74 */
75
76#define I82875P_ERRCMD 0xca /* Error Command (16b)
77 *
78 * 15:10 reserved
79 * 9 SERR on non-DRAM lock
80 * 8 SERR on ECC UE
81 * 7 SERR on ECC CE
82 * 6 target abort on high exception
83 * 5 detect unimplemented cyc
84 * 4 AGP access outside of GA
85 * 3 SERR on invalid AGP access
86 * 2 invalid translation table
87 * 1 SERR on unsupported AGP command
88 * 0 reserved
89 */
90
Alan Cox0d88a102006-01-18 17:44:10 -080091/* Intel 82875p register addresses - device 6 function 0 - DRAM Controller */
92#define I82875P_PCICMD6 0x04 /* PCI Command Register (16b)
93 *
94 * 15:10 reserved
95 * 9 fast back-to-back - ro 0
96 * 8 SERR enable - ro 0
97 * 7 addr/data stepping - ro 0
98 * 6 parity err enable - ro 0
99 * 5 VGA palette snoop - ro 0
100 * 4 mem wr & invalidate - ro 0
101 * 3 special cycle - ro 0
102 * 2 bus master - ro 0
103 * 1 mem access dev6 - 0(dis),1(en)
104 * 0 IO access dev3 - 0(dis),1(en)
105 */
106
107#define I82875P_BAR6 0x10 /* Mem Delays Base ADDR Reg (32b)
108 *
109 * 31:12 mem base addr [31:12]
110 * 11:4 address mask - ro 0
111 * 3 prefetchable - ro 0(non),1(pre)
112 * 2:1 mem type - ro 0
113 * 0 mem space - ro 0
114 */
115
116/* Intel 82875p MMIO register space - device 0 function 0 - MMR space */
117
118#define I82875P_DRB_SHIFT 26 /* 64MiB grain */
119#define I82875P_DRB 0x00 /* DRAM Row Boundary (8b x 8)
120 *
121 * 7 reserved
122 * 6:0 64MiB row boundary addr
123 */
124
125#define I82875P_DRA 0x10 /* DRAM Row Attribute (4b x 8)
126 *
127 * 7 reserved
128 * 6:4 row attr row 1
129 * 3 reserved
130 * 2:0 row attr row 0
131 *
132 * 000 = 4KiB
133 * 001 = 8KiB
134 * 010 = 16KiB
135 * 011 = 32KiB
136 */
137
138#define I82875P_DRC 0x68 /* DRAM Controller Mode (32b)
139 *
140 * 31:30 reserved
141 * 29 init complete
142 * 28:23 reserved
143 * 22:21 nr chan 00=1,01=2
144 * 20 reserved
145 * 19:18 Data Integ Mode 00=none,01=ecc
146 * 17:11 reserved
147 * 10:8 refresh mode
148 * 7 reserved
149 * 6:4 mode select
150 * 3:2 reserved
151 * 1:0 DRAM type 01=DDR
152 */
153
Alan Cox0d88a102006-01-18 17:44:10 -0800154enum i82875p_chips {
155 I82875P = 0,
156};
157
Alan Cox0d88a102006-01-18 17:44:10 -0800158struct i82875p_pvt {
159 struct pci_dev *ovrfl_pdev;
Al Viro6d573482006-02-01 06:10:08 -0500160 void __iomem *ovrfl_window;
Alan Cox0d88a102006-01-18 17:44:10 -0800161};
162
Alan Cox0d88a102006-01-18 17:44:10 -0800163struct i82875p_dev_info {
164 const char *ctl_name;
165};
166
Alan Cox0d88a102006-01-18 17:44:10 -0800167struct i82875p_error_info {
168 u16 errsts;
169 u32 eap;
170 u8 des;
171 u8 derrsyn;
172 u16 errsts2;
173};
174
Alan Cox0d88a102006-01-18 17:44:10 -0800175static const struct i82875p_dev_info i82875p_devs[] = {
176 [I82875P] = {
Douglas Thompson052dfb42007-07-19 01:50:13 -0700177 .ctl_name = "i82875p"},
Alan Cox0d88a102006-01-18 17:44:10 -0800178};
179
Douglas Thompsonf0440912007-07-19 01:50:19 -0700180static struct pci_dev *mci_pdev; /* init dev: in case that AGP code has
Dave Petersone7ecd892006-03-26 01:38:52 -0800181 * already registered driver
182 */
183
Alan Cox0d88a102006-01-18 17:44:10 -0800184static int i82875p_registered = 1;
185
Dave Jiang456a2f92007-07-19 01:50:10 -0700186static struct edac_pci_ctl_info *i82875p_pci;
187
Dave Petersone7ecd892006-03-26 01:38:52 -0800188static void i82875p_get_error_info(struct mem_ctl_info *mci,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700189 struct i82875p_error_info *info)
Alan Cox0d88a102006-01-18 17:44:10 -0800190{
Doug Thompson37f04582006-06-30 01:56:07 -0700191 struct pci_dev *pdev;
192
193 pdev = to_pci_dev(mci->dev);
194
Alan Cox0d88a102006-01-18 17:44:10 -0800195 /*
196 * This is a mess because there is no atomic way to read all the
197 * registers at once and the registers can transition from CE being
198 * overwritten by UE.
199 */
Doug Thompson37f04582006-06-30 01:56:07 -0700200 pci_read_config_word(pdev, I82875P_ERRSTS, &info->errsts);
Jason Uhlenkott654ede22007-07-19 01:50:16 -0700201
202 if (!(info->errsts & 0x0081))
203 return;
204
Doug Thompson37f04582006-06-30 01:56:07 -0700205 pci_read_config_dword(pdev, I82875P_EAP, &info->eap);
206 pci_read_config_byte(pdev, I82875P_DES, &info->des);
207 pci_read_config_byte(pdev, I82875P_DERRSYN, &info->derrsyn);
208 pci_read_config_word(pdev, I82875P_ERRSTS, &info->errsts2);
Alan Cox0d88a102006-01-18 17:44:10 -0800209
Alan Cox0d88a102006-01-18 17:44:10 -0800210 /*
211 * If the error is the same then we can for both reads then
212 * the first set of reads is valid. If there is a change then
213 * there is a CE no info and the second set of reads is valid
214 * and should be UE info.
215 */
Alan Cox0d88a102006-01-18 17:44:10 -0800216 if ((info->errsts ^ info->errsts2) & 0x0081) {
Doug Thompson37f04582006-06-30 01:56:07 -0700217 pci_read_config_dword(pdev, I82875P_EAP, &info->eap);
218 pci_read_config_byte(pdev, I82875P_DES, &info->des);
Dave Jiang466b71d2007-07-19 01:50:05 -0700219 pci_read_config_byte(pdev, I82875P_DERRSYN, &info->derrsyn);
Alan Cox0d88a102006-01-18 17:44:10 -0800220 }
Jason Uhlenkott654ede22007-07-19 01:50:16 -0700221
222 pci_write_bits16(pdev, I82875P_ERRSTS, 0x0081, 0x0081);
Alan Cox0d88a102006-01-18 17:44:10 -0800223}
224
Dave Petersone7ecd892006-03-26 01:38:52 -0800225static int i82875p_process_error_info(struct mem_ctl_info *mci,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700226 struct i82875p_error_info *info,
227 int handle_errors)
Alan Cox0d88a102006-01-18 17:44:10 -0800228{
229 int row, multi_chan;
230
231 multi_chan = mci->csrows[0].nr_channels - 1;
232
Jason Uhlenkott654ede22007-07-19 01:50:16 -0700233 if (!(info->errsts & 0x0081))
Alan Cox0d88a102006-01-18 17:44:10 -0800234 return 0;
235
236 if (!handle_errors)
237 return 1;
238
239 if ((info->errsts ^ info->errsts2) & 0x0081) {
240 edac_mc_handle_ce_no_info(mci, "UE overwrote CE");
241 info->errsts = info->errsts2;
242 }
243
244 info->eap >>= PAGE_SHIFT;
245 row = edac_mc_find_csrow_by_page(mci, info->eap);
246
247 if (info->errsts & 0x0080)
248 edac_mc_handle_ue(mci, info->eap, 0, row, "i82875p UE");
249 else
250 edac_mc_handle_ce(mci, info->eap, 0, info->derrsyn, row,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700251 multi_chan ? (info->des & 0x1) : 0,
252 "i82875p CE");
Alan Cox0d88a102006-01-18 17:44:10 -0800253
254 return 1;
255}
256
Alan Cox0d88a102006-01-18 17:44:10 -0800257static void i82875p_check(struct mem_ctl_info *mci)
258{
259 struct i82875p_error_info info;
260
Dave Peterson537fba22006-03-26 01:38:40 -0800261 debugf1("MC%d: %s()\n", mci->mc_idx, __func__);
Alan Cox0d88a102006-01-18 17:44:10 -0800262 i82875p_get_error_info(mci, &info);
263 i82875p_process_error_info(mci, &info, 1);
264}
265
Doug Thompson13189522006-06-30 01:56:08 -0700266/* Return 0 on success or 1 on failure. */
267static int i82875p_setup_overfl_dev(struct pci_dev *pdev,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700268 struct pci_dev **ovrfl_pdev,
269 void __iomem **ovrfl_window)
Alan Cox0d88a102006-01-18 17:44:10 -0800270{
Doug Thompson13189522006-06-30 01:56:08 -0700271 struct pci_dev *dev;
272 void __iomem *window;
Douglas Thompson1c521522007-07-19 01:50:17 -0700273 int err;
Alan Cox0d88a102006-01-18 17:44:10 -0800274
Doug Thompson13189522006-06-30 01:56:08 -0700275 *ovrfl_pdev = NULL;
276 *ovrfl_window = NULL;
277 dev = pci_get_device(PCI_VEND_DEV(INTEL, 82875_6), NULL);
Alan Cox0d88a102006-01-18 17:44:10 -0800278
Doug Thompson13189522006-06-30 01:56:08 -0700279 if (dev == NULL) {
280 /* Intel tells BIOS developers to hide device 6 which
Alan Cox0d88a102006-01-18 17:44:10 -0800281 * configures the overflow device access containing
282 * the DRBs - this is where we expose device 6.
283 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
284 */
285 pci_write_bits8(pdev, 0xf4, 0x2, 0x2);
Doug Thompson13189522006-06-30 01:56:08 -0700286 dev = pci_scan_single_device(pdev->bus, PCI_DEVFN(6, 0));
Dave Petersone7ecd892006-03-26 01:38:52 -0800287
Doug Thompson13189522006-06-30 01:56:08 -0700288 if (dev == NULL)
289 return 1;
John Feeney62456726d2007-05-08 00:28:12 -0700290
Douglas Thompson1c521522007-07-19 01:50:17 -0700291 err = pci_bus_add_device(dev);
292 if (err) {
293 i82875p_printk(KERN_ERR,
294 "%s(): pci_bus_add_device() Failed\n",
295 __func__);
296 }
Alan Cox0d88a102006-01-18 17:44:10 -0800297 }
Dave Petersone7ecd892006-03-26 01:38:52 -0800298
Doug Thompson13189522006-06-30 01:56:08 -0700299 *ovrfl_pdev = dev;
300
Doug Thompson13189522006-06-30 01:56:08 -0700301 if (pci_enable_device(dev)) {
302 i82875p_printk(KERN_ERR, "%s(): Failed to enable overflow "
Douglas Thompson052dfb42007-07-19 01:50:13 -0700303 "device\n", __func__);
Doug Thompson13189522006-06-30 01:56:08 -0700304 return 1;
Alan Cox0d88a102006-01-18 17:44:10 -0800305 }
306
Doug Thompson13189522006-06-30 01:56:08 -0700307 if (pci_request_regions(dev, pci_name(dev))) {
Alan Cox0d88a102006-01-18 17:44:10 -0800308#ifdef CORRECT_BIOS
Dave Peterson637beb62006-03-26 01:38:44 -0800309 goto fail0;
Alan Cox0d88a102006-01-18 17:44:10 -0800310#endif
311 }
Dave Petersone7ecd892006-03-26 01:38:52 -0800312
Alan Cox0d88a102006-01-18 17:44:10 -0800313 /* cache is irrelevant for PCI bus reads/writes */
Doug Thompson13189522006-06-30 01:56:08 -0700314 window = ioremap_nocache(pci_resource_start(dev, 0),
315 pci_resource_len(dev, 0));
Alan Cox0d88a102006-01-18 17:44:10 -0800316
Doug Thompson13189522006-06-30 01:56:08 -0700317 if (window == NULL) {
Dave Peterson537fba22006-03-26 01:38:40 -0800318 i82875p_printk(KERN_ERR, "%s(): Failed to ioremap bar6\n",
Douglas Thompson052dfb42007-07-19 01:50:13 -0700319 __func__);
Dave Peterson637beb62006-03-26 01:38:44 -0800320 goto fail1;
Alan Cox0d88a102006-01-18 17:44:10 -0800321 }
322
Doug Thompson13189522006-06-30 01:56:08 -0700323 *ovrfl_window = window;
324 return 0;
325
Douglas Thompson052dfb42007-07-19 01:50:13 -0700326fail1:
Doug Thompson13189522006-06-30 01:56:08 -0700327 pci_release_regions(dev);
328
329#ifdef CORRECT_BIOS
Douglas Thompson052dfb42007-07-19 01:50:13 -0700330fail0:
Doug Thompson13189522006-06-30 01:56:08 -0700331 pci_disable_device(dev);
332#endif
333 /* NOTE: the ovrfl proc entry and pci_dev are intentionally left */
334 return 1;
335}
336
Doug Thompson13189522006-06-30 01:56:08 -0700337/* Return 1 if dual channel mode is active. Else return 0. */
338static inline int dual_channel_active(u32 drc)
339{
340 return (drc >> 21) & 0x1;
341}
342
Doug Thompson13189522006-06-30 01:56:08 -0700343static void i82875p_init_csrows(struct mem_ctl_info *mci,
Dave Jiang466b71d2007-07-19 01:50:05 -0700344 struct pci_dev *pdev,
345 void __iomem * ovrfl_window, u32 drc)
Doug Thompson13189522006-06-30 01:56:08 -0700346{
347 struct csrow_info *csrow;
348 unsigned long last_cumul_size;
349 u8 value;
Dave Jiang466b71d2007-07-19 01:50:05 -0700350 u32 drc_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */
Doug Thompson13189522006-06-30 01:56:08 -0700351 u32 cumul_size;
352 int index;
Alan Cox0d88a102006-01-18 17:44:10 -0800353
Dave Petersone7ecd892006-03-26 01:38:52 -0800354 drc_ddim = (drc >> 18) & 0x1;
Doug Thompson13189522006-06-30 01:56:08 -0700355 last_cumul_size = 0;
356
357 /* The dram row boundary (DRB) reg values are boundary address
358 * for each DRAM row with a granularity of 32 or 64MB (single/dual
359 * channel operation). DRB regs are cumulative; therefore DRB7 will
360 * contain the total memory contained in all eight rows.
361 */
362
363 for (index = 0; index < mci->nr_csrows; index++) {
364 csrow = &mci->csrows[index];
365
366 value = readb(ovrfl_window + I82875P_DRB + index);
367 cumul_size = value << (I82875P_DRB_SHIFT - PAGE_SHIFT);
368 debugf3("%s(): (%d) cumul_size 0x%x\n", __func__, index,
369 cumul_size);
370 if (cumul_size == last_cumul_size)
371 continue; /* not populated */
372
373 csrow->first_page = last_cumul_size;
374 csrow->last_page = cumul_size - 1;
375 csrow->nr_pages = cumul_size - last_cumul_size;
376 last_cumul_size = cumul_size;
377 csrow->grain = 1 << 12; /* I82875P_EAP has 4KiB reolution */
378 csrow->mtype = MEM_DDR;
379 csrow->dtype = DEV_UNKNOWN;
380 csrow->edac_mode = drc_ddim ? EDAC_SECDED : EDAC_NONE;
381 }
382}
383
384static int i82875p_probe1(struct pci_dev *pdev, int dev_idx)
385{
386 int rc = -ENODEV;
387 struct mem_ctl_info *mci;
388 struct i82875p_pvt *pvt;
389 struct pci_dev *ovrfl_pdev;
390 void __iomem *ovrfl_window;
391 u32 drc;
392 u32 nr_chans;
393 struct i82875p_error_info discard;
394
395 debugf0("%s()\n", __func__);
396 ovrfl_pdev = pci_get_device(PCI_VEND_DEV(INTEL, 82875_6), NULL);
397
398 if (i82875p_setup_overfl_dev(pdev, &ovrfl_pdev, &ovrfl_window))
399 return -ENODEV;
400 drc = readl(ovrfl_window + I82875P_DRC);
401 nr_chans = dual_channel_active(drc) + 1;
Alan Cox0d88a102006-01-18 17:44:10 -0800402 mci = edac_mc_alloc(sizeof(*pvt), I82875P_NR_CSROWS(nr_chans),
Doug Thompsonb8f6f972007-07-19 01:50:26 -0700403 nr_chans, 0);
Alan Cox0d88a102006-01-18 17:44:10 -0800404
405 if (!mci) {
406 rc = -ENOMEM;
Doug Thompson13189522006-06-30 01:56:08 -0700407 goto fail0;
Alan Cox0d88a102006-01-18 17:44:10 -0800408 }
409
Dave Peterson537fba22006-03-26 01:38:40 -0800410 debugf3("%s(): init mci\n", __func__);
Doug Thompson37f04582006-06-30 01:56:07 -0700411 mci->dev = &pdev->dev;
Alan Cox0d88a102006-01-18 17:44:10 -0800412 mci->mtype_cap = MEM_FLAG_DDR;
Alan Cox0d88a102006-01-18 17:44:10 -0800413 mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
414 mci->edac_cap = EDAC_FLAG_UNKNOWN;
Dave Peterson680cbbb2006-03-26 01:38:41 -0800415 mci->mod_name = EDAC_MOD_STR;
Doug Thompson37f04582006-06-30 01:56:07 -0700416 mci->mod_ver = I82875P_REVISION;
Alan Cox0d88a102006-01-18 17:44:10 -0800417 mci->ctl_name = i82875p_devs[dev_idx].ctl_name;
Dave Jiangc4192702007-07-19 01:49:47 -0700418 mci->dev_name = pci_name(pdev);
Alan Cox0d88a102006-01-18 17:44:10 -0800419 mci->edac_check = i82875p_check;
420 mci->ctl_page_to_phys = NULL;
Dave Peterson537fba22006-03-26 01:38:40 -0800421 debugf3("%s(): init pvt\n", __func__);
Dave Jiang466b71d2007-07-19 01:50:05 -0700422 pvt = (struct i82875p_pvt *)mci->pvt_info;
Alan Cox0d88a102006-01-18 17:44:10 -0800423 pvt->ovrfl_pdev = ovrfl_pdev;
424 pvt->ovrfl_window = ovrfl_window;
Doug Thompson13189522006-06-30 01:56:08 -0700425 i82875p_init_csrows(mci, pdev, ovrfl_window, drc);
Dave Jiang466b71d2007-07-19 01:50:05 -0700426 i82875p_get_error_info(mci, &discard); /* clear counters */
Alan Cox0d88a102006-01-18 17:44:10 -0800427
Doug Thompson2d7bbb92006-06-30 01:56:08 -0700428 /* Here we assume that we will never see multiple instances of this
429 * type of memory controller. The ID is therefore hardcoded to 0.
430 */
Doug Thompsonb8f6f972007-07-19 01:50:26 -0700431 if (edac_mc_add_mc(mci)) {
Dave Peterson537fba22006-03-26 01:38:40 -0800432 debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
Doug Thompson13189522006-06-30 01:56:08 -0700433 goto fail1;
Alan Cox0d88a102006-01-18 17:44:10 -0800434 }
435
Dave Jiang456a2f92007-07-19 01:50:10 -0700436 /* allocating generic PCI control info */
437 i82875p_pci = edac_pci_create_generic_ctl(&pdev->dev, EDAC_MOD_STR);
438 if (!i82875p_pci) {
439 printk(KERN_WARNING
440 "%s(): Unable to create PCI control\n",
441 __func__);
442 printk(KERN_WARNING
443 "%s(): PCI error report via EDAC not setup\n",
444 __func__);
445 }
446
Alan Cox0d88a102006-01-18 17:44:10 -0800447 /* get this far and it's successful */
Dave Peterson537fba22006-03-26 01:38:40 -0800448 debugf3("%s(): success\n", __func__);
Alan Cox0d88a102006-01-18 17:44:10 -0800449 return 0;
450
Douglas Thompson052dfb42007-07-19 01:50:13 -0700451fail1:
Dave Peterson637beb62006-03-26 01:38:44 -0800452 edac_mc_free(mci);
Alan Cox0d88a102006-01-18 17:44:10 -0800453
Douglas Thompson052dfb42007-07-19 01:50:13 -0700454fail0:
Dave Peterson637beb62006-03-26 01:38:44 -0800455 iounmap(ovrfl_window);
Dave Peterson637beb62006-03-26 01:38:44 -0800456 pci_release_regions(ovrfl_pdev);
Alan Cox0d88a102006-01-18 17:44:10 -0800457
Dave Peterson637beb62006-03-26 01:38:44 -0800458 pci_disable_device(ovrfl_pdev);
Alan Cox0d88a102006-01-18 17:44:10 -0800459 /* NOTE: the ovrfl proc entry and pci_dev are intentionally left */
460 return rc;
461}
462
Alan Cox0d88a102006-01-18 17:44:10 -0800463/* returns count (>= 0), or negative on error */
464static int __devinit i82875p_init_one(struct pci_dev *pdev,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700465 const struct pci_device_id *ent)
Alan Cox0d88a102006-01-18 17:44:10 -0800466{
467 int rc;
468
Dave Peterson537fba22006-03-26 01:38:40 -0800469 debugf0("%s()\n", __func__);
Dave Peterson537fba22006-03-26 01:38:40 -0800470 i82875p_printk(KERN_INFO, "i82875p init one\n");
Dave Petersone7ecd892006-03-26 01:38:52 -0800471
472 if (pci_enable_device(pdev) < 0)
Alan Cox0d88a102006-01-18 17:44:10 -0800473 return -EIO;
Dave Petersone7ecd892006-03-26 01:38:52 -0800474
Alan Cox0d88a102006-01-18 17:44:10 -0800475 rc = i82875p_probe1(pdev, ent->driver_data);
Dave Petersone7ecd892006-03-26 01:38:52 -0800476
Alan Cox0d88a102006-01-18 17:44:10 -0800477 if (mci_pdev == NULL)
478 mci_pdev = pci_dev_get(pdev);
Dave Petersone7ecd892006-03-26 01:38:52 -0800479
Alan Cox0d88a102006-01-18 17:44:10 -0800480 return rc;
481}
482
Alan Cox0d88a102006-01-18 17:44:10 -0800483static void __devexit i82875p_remove_one(struct pci_dev *pdev)
484{
485 struct mem_ctl_info *mci;
486 struct i82875p_pvt *pvt = NULL;
487
Dave Peterson537fba22006-03-26 01:38:40 -0800488 debugf0("%s()\n", __func__);
Alan Cox0d88a102006-01-18 17:44:10 -0800489
Dave Jiang456a2f92007-07-19 01:50:10 -0700490 if (i82875p_pci)
491 edac_pci_release_generic_ctl(i82875p_pci);
492
Doug Thompson37f04582006-06-30 01:56:07 -0700493 if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)
Alan Cox0d88a102006-01-18 17:44:10 -0800494 return;
495
Dave Jiang466b71d2007-07-19 01:50:05 -0700496 pvt = (struct i82875p_pvt *)mci->pvt_info;
Dave Petersone7ecd892006-03-26 01:38:52 -0800497
Alan Cox0d88a102006-01-18 17:44:10 -0800498 if (pvt->ovrfl_window)
499 iounmap(pvt->ovrfl_window);
500
501 if (pvt->ovrfl_pdev) {
502#ifdef CORRECT_BIOS
503 pci_release_regions(pvt->ovrfl_pdev);
504#endif /*CORRECT_BIOS */
505 pci_disable_device(pvt->ovrfl_pdev);
506 pci_dev_put(pvt->ovrfl_pdev);
507 }
508
Alan Cox0d88a102006-01-18 17:44:10 -0800509 edac_mc_free(mci);
510}
511
Alan Cox0d88a102006-01-18 17:44:10 -0800512static const struct pci_device_id i82875p_pci_tbl[] __devinitdata = {
Dave Petersone7ecd892006-03-26 01:38:52 -0800513 {
Dave Jiang466b71d2007-07-19 01:50:05 -0700514 PCI_VEND_DEV(INTEL, 82875_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
515 I82875P},
Dave Petersone7ecd892006-03-26 01:38:52 -0800516 {
Dave Jiang466b71d2007-07-19 01:50:05 -0700517 0,
518 } /* 0 terminated list. */
Alan Cox0d88a102006-01-18 17:44:10 -0800519};
520
521MODULE_DEVICE_TABLE(pci, i82875p_pci_tbl);
522
Alan Cox0d88a102006-01-18 17:44:10 -0800523static struct pci_driver i82875p_driver = {
Dave Peterson680cbbb2006-03-26 01:38:41 -0800524 .name = EDAC_MOD_STR,
Alan Cox0d88a102006-01-18 17:44:10 -0800525 .probe = i82875p_init_one,
526 .remove = __devexit_p(i82875p_remove_one),
527 .id_table = i82875p_pci_tbl,
528};
529
Alan Coxda9bb1d2006-01-18 17:44:13 -0800530static int __init i82875p_init(void)
Alan Cox0d88a102006-01-18 17:44:10 -0800531{
532 int pci_rc;
533
Dave Peterson537fba22006-03-26 01:38:40 -0800534 debugf3("%s()\n", __func__);
Alan Cox0d88a102006-01-18 17:44:10 -0800535 pci_rc = pci_register_driver(&i82875p_driver);
Dave Petersone7ecd892006-03-26 01:38:52 -0800536
Alan Cox0d88a102006-01-18 17:44:10 -0800537 if (pci_rc < 0)
Dave Peterson637beb62006-03-26 01:38:44 -0800538 goto fail0;
Dave Petersone7ecd892006-03-26 01:38:52 -0800539
Alan Cox0d88a102006-01-18 17:44:10 -0800540 if (mci_pdev == NULL) {
Dave Petersone7ecd892006-03-26 01:38:52 -0800541 mci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700542 PCI_DEVICE_ID_INTEL_82875_0, NULL);
Dave Petersone7ecd892006-03-26 01:38:52 -0800543
Alan Cox0d88a102006-01-18 17:44:10 -0800544 if (!mci_pdev) {
545 debugf0("875p pci_get_device fail\n");
Dave Peterson637beb62006-03-26 01:38:44 -0800546 pci_rc = -ENODEV;
547 goto fail1;
Alan Cox0d88a102006-01-18 17:44:10 -0800548 }
Dave Petersone7ecd892006-03-26 01:38:52 -0800549
Alan Cox0d88a102006-01-18 17:44:10 -0800550 pci_rc = i82875p_init_one(mci_pdev, i82875p_pci_tbl);
Dave Petersone7ecd892006-03-26 01:38:52 -0800551
Alan Cox0d88a102006-01-18 17:44:10 -0800552 if (pci_rc < 0) {
553 debugf0("875p init fail\n");
Dave Peterson637beb62006-03-26 01:38:44 -0800554 pci_rc = -ENODEV;
555 goto fail1;
Alan Cox0d88a102006-01-18 17:44:10 -0800556 }
557 }
Dave Petersone7ecd892006-03-26 01:38:52 -0800558
Alan Cox0d88a102006-01-18 17:44:10 -0800559 return 0;
Dave Peterson637beb62006-03-26 01:38:44 -0800560
Douglas Thompson052dfb42007-07-19 01:50:13 -0700561fail1:
Dave Peterson637beb62006-03-26 01:38:44 -0800562 pci_unregister_driver(&i82875p_driver);
563
Douglas Thompson052dfb42007-07-19 01:50:13 -0700564fail0:
Dave Peterson637beb62006-03-26 01:38:44 -0800565 if (mci_pdev != NULL)
566 pci_dev_put(mci_pdev);
567
568 return pci_rc;
Alan Cox0d88a102006-01-18 17:44:10 -0800569}
570
Alan Cox0d88a102006-01-18 17:44:10 -0800571static void __exit i82875p_exit(void)
572{
Dave Peterson537fba22006-03-26 01:38:40 -0800573 debugf3("%s()\n", __func__);
Alan Cox0d88a102006-01-18 17:44:10 -0800574
575 pci_unregister_driver(&i82875p_driver);
Dave Petersone7ecd892006-03-26 01:38:52 -0800576
Alan Cox0d88a102006-01-18 17:44:10 -0800577 if (!i82875p_registered) {
578 i82875p_remove_one(mci_pdev);
579 pci_dev_put(mci_pdev);
580 }
581}
582
Alan Cox0d88a102006-01-18 17:44:10 -0800583module_init(i82875p_init);
584module_exit(i82875p_exit);
585
Alan Cox0d88a102006-01-18 17:44:10 -0800586MODULE_LICENSE("GPL");
587MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh");
588MODULE_DESCRIPTION("MC support for Intel 82875 memory hub controllers");