blob: b2d83b95033d382c3d2818c56533287ff4d77d67 [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>
Hitoshi Mitakec3c52bc2008-04-29 01:03:18 -070021#include <linux/edac.h>
Douglas Thompson20bcb7a2007-07-19 01:49:47 -070022#include "edac_core.h"
Alan Cox0d88a102006-01-18 17:44:10 -080023
Douglas Thompson20bcb7a2007-07-19 01:49:47 -070024#define I82875P_REVISION " Ver: 2.0.2 " __DATE__
Doug Thompson929a40e2006-07-01 04:35:45 -070025#define EDAC_MOD_STR "i82875p_edac"
Doug Thompson37f04582006-06-30 01:56:07 -070026
Dave Peterson537fba22006-03-26 01:38:40 -080027#define i82875p_printk(level, fmt, arg...) \
Dave Petersone7ecd892006-03-26 01:38:52 -080028 edac_printk(level, "i82875p", fmt, ##arg)
Dave Peterson537fba22006-03-26 01:38:40 -080029
30#define i82875p_mc_printk(mci, level, fmt, arg...) \
Dave Petersone7ecd892006-03-26 01:38:52 -080031 edac_mc_chipset_printk(mci, level, "i82875p", fmt, ##arg)
Dave Peterson537fba22006-03-26 01:38:40 -080032
Alan Cox0d88a102006-01-18 17:44:10 -080033#ifndef PCI_DEVICE_ID_INTEL_82875_0
34#define PCI_DEVICE_ID_INTEL_82875_0 0x2578
35#endif /* PCI_DEVICE_ID_INTEL_82875_0 */
36
37#ifndef PCI_DEVICE_ID_INTEL_82875_6
38#define PCI_DEVICE_ID_INTEL_82875_6 0x257e
39#endif /* PCI_DEVICE_ID_INTEL_82875_6 */
40
Alan Cox0d88a102006-01-18 17:44:10 -080041/* four csrows in dual channel, eight in single channel */
42#define I82875P_NR_CSROWS(nr_chans) (8/(nr_chans))
43
Alan Cox0d88a102006-01-18 17:44:10 -080044/* Intel 82875p register addresses - device 0 function 0 - DRAM Controller */
45#define I82875P_EAP 0x58 /* Error Address Pointer (32b)
46 *
47 * 31:12 block address
48 * 11:0 reserved
49 */
50
51#define I82875P_DERRSYN 0x5c /* DRAM Error Syndrome (8b)
52 *
53 * 7:0 DRAM ECC Syndrome
54 */
55
56#define I82875P_DES 0x5d /* DRAM Error Status (8b)
57 *
58 * 7:1 reserved
59 * 0 Error channel 0/1
60 */
61
62#define I82875P_ERRSTS 0xc8 /* Error Status Register (16b)
63 *
64 * 15:10 reserved
65 * 9 non-DRAM lock error (ndlock)
66 * 8 Sftwr Generated SMI
67 * 7 ECC UE
68 * 6 reserved
69 * 5 MCH detects unimplemented cycle
70 * 4 AGP access outside GA
71 * 3 Invalid AGP access
72 * 2 Invalid GA translation table
73 * 1 Unsupported AGP command
74 * 0 ECC CE
75 */
76
77#define I82875P_ERRCMD 0xca /* Error Command (16b)
78 *
79 * 15:10 reserved
80 * 9 SERR on non-DRAM lock
81 * 8 SERR on ECC UE
82 * 7 SERR on ECC CE
83 * 6 target abort on high exception
84 * 5 detect unimplemented cyc
85 * 4 AGP access outside of GA
86 * 3 SERR on invalid AGP access
87 * 2 invalid translation table
88 * 1 SERR on unsupported AGP command
89 * 0 reserved
90 */
91
Alan Cox0d88a102006-01-18 17:44:10 -080092/* Intel 82875p register addresses - device 6 function 0 - DRAM Controller */
93#define I82875P_PCICMD6 0x04 /* PCI Command Register (16b)
94 *
95 * 15:10 reserved
96 * 9 fast back-to-back - ro 0
97 * 8 SERR enable - ro 0
98 * 7 addr/data stepping - ro 0
99 * 6 parity err enable - ro 0
100 * 5 VGA palette snoop - ro 0
101 * 4 mem wr & invalidate - ro 0
102 * 3 special cycle - ro 0
103 * 2 bus master - ro 0
104 * 1 mem access dev6 - 0(dis),1(en)
105 * 0 IO access dev3 - 0(dis),1(en)
106 */
107
108#define I82875P_BAR6 0x10 /* Mem Delays Base ADDR Reg (32b)
109 *
110 * 31:12 mem base addr [31:12]
111 * 11:4 address mask - ro 0
112 * 3 prefetchable - ro 0(non),1(pre)
113 * 2:1 mem type - ro 0
114 * 0 mem space - ro 0
115 */
116
117/* Intel 82875p MMIO register space - device 0 function 0 - MMR space */
118
119#define I82875P_DRB_SHIFT 26 /* 64MiB grain */
120#define I82875P_DRB 0x00 /* DRAM Row Boundary (8b x 8)
121 *
122 * 7 reserved
123 * 6:0 64MiB row boundary addr
124 */
125
126#define I82875P_DRA 0x10 /* DRAM Row Attribute (4b x 8)
127 *
128 * 7 reserved
129 * 6:4 row attr row 1
130 * 3 reserved
131 * 2:0 row attr row 0
132 *
133 * 000 = 4KiB
134 * 001 = 8KiB
135 * 010 = 16KiB
136 * 011 = 32KiB
137 */
138
139#define I82875P_DRC 0x68 /* DRAM Controller Mode (32b)
140 *
141 * 31:30 reserved
142 * 29 init complete
143 * 28:23 reserved
144 * 22:21 nr chan 00=1,01=2
145 * 20 reserved
146 * 19:18 Data Integ Mode 00=none,01=ecc
147 * 17:11 reserved
148 * 10:8 refresh mode
149 * 7 reserved
150 * 6:4 mode select
151 * 3:2 reserved
152 * 1:0 DRAM type 01=DDR
153 */
154
Alan Cox0d88a102006-01-18 17:44:10 -0800155enum i82875p_chips {
156 I82875P = 0,
157};
158
Alan Cox0d88a102006-01-18 17:44:10 -0800159struct i82875p_pvt {
160 struct pci_dev *ovrfl_pdev;
Al Viro6d573482006-02-01 06:10:08 -0500161 void __iomem *ovrfl_window;
Alan Cox0d88a102006-01-18 17:44:10 -0800162};
163
Alan Cox0d88a102006-01-18 17:44:10 -0800164struct i82875p_dev_info {
165 const char *ctl_name;
166};
167
Alan Cox0d88a102006-01-18 17:44:10 -0800168struct i82875p_error_info {
169 u16 errsts;
170 u32 eap;
171 u8 des;
172 u8 derrsyn;
173 u16 errsts2;
174};
175
Alan Cox0d88a102006-01-18 17:44:10 -0800176static const struct i82875p_dev_info i82875p_devs[] = {
177 [I82875P] = {
Douglas Thompson052dfb42007-07-19 01:50:13 -0700178 .ctl_name = "i82875p"},
Alan Cox0d88a102006-01-18 17:44:10 -0800179};
180
Douglas Thompsonf0440912007-07-19 01:50:19 -0700181static struct pci_dev *mci_pdev; /* init dev: in case that AGP code has
Dave Petersone7ecd892006-03-26 01:38:52 -0800182 * already registered driver
183 */
184
Dave Jiang456a2f92007-07-19 01:50:10 -0700185static struct edac_pci_ctl_info *i82875p_pci;
186
Dave Petersone7ecd892006-03-26 01:38:52 -0800187static void i82875p_get_error_info(struct mem_ctl_info *mci,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700188 struct i82875p_error_info *info)
Alan Cox0d88a102006-01-18 17:44:10 -0800189{
Doug Thompson37f04582006-06-30 01:56:07 -0700190 struct pci_dev *pdev;
191
192 pdev = to_pci_dev(mci->dev);
193
Alan Cox0d88a102006-01-18 17:44:10 -0800194 /*
195 * This is a mess because there is no atomic way to read all the
196 * registers at once and the registers can transition from CE being
197 * overwritten by UE.
198 */
Doug Thompson37f04582006-06-30 01:56:07 -0700199 pci_read_config_word(pdev, I82875P_ERRSTS, &info->errsts);
Jason Uhlenkott654ede22007-07-19 01:50:16 -0700200
201 if (!(info->errsts & 0x0081))
202 return;
203
Doug Thompson37f04582006-06-30 01:56:07 -0700204 pci_read_config_dword(pdev, I82875P_EAP, &info->eap);
205 pci_read_config_byte(pdev, I82875P_DES, &info->des);
206 pci_read_config_byte(pdev, I82875P_DERRSYN, &info->derrsyn);
207 pci_read_config_word(pdev, I82875P_ERRSTS, &info->errsts2);
Alan Cox0d88a102006-01-18 17:44:10 -0800208
Alan Cox0d88a102006-01-18 17:44:10 -0800209 /*
210 * If the error is the same then we can for both reads then
211 * the first set of reads is valid. If there is a change then
212 * there is a CE no info and the second set of reads is valid
213 * and should be UE info.
214 */
Alan Cox0d88a102006-01-18 17:44:10 -0800215 if ((info->errsts ^ info->errsts2) & 0x0081) {
Doug Thompson37f04582006-06-30 01:56:07 -0700216 pci_read_config_dword(pdev, I82875P_EAP, &info->eap);
217 pci_read_config_byte(pdev, I82875P_DES, &info->des);
Dave Jiang466b71d2007-07-19 01:50:05 -0700218 pci_read_config_byte(pdev, I82875P_DERRSYN, &info->derrsyn);
Alan Cox0d88a102006-01-18 17:44:10 -0800219 }
Jason Uhlenkott654ede22007-07-19 01:50:16 -0700220
221 pci_write_bits16(pdev, I82875P_ERRSTS, 0x0081, 0x0081);
Alan Cox0d88a102006-01-18 17:44:10 -0800222}
223
Dave Petersone7ecd892006-03-26 01:38:52 -0800224static int i82875p_process_error_info(struct mem_ctl_info *mci,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700225 struct i82875p_error_info *info,
226 int handle_errors)
Alan Cox0d88a102006-01-18 17:44:10 -0800227{
228 int row, multi_chan;
229
230 multi_chan = mci->csrows[0].nr_channels - 1;
231
Jason Uhlenkott654ede22007-07-19 01:50:16 -0700232 if (!(info->errsts & 0x0081))
Alan Cox0d88a102006-01-18 17:44:10 -0800233 return 0;
234
235 if (!handle_errors)
236 return 1;
237
238 if ((info->errsts ^ info->errsts2) & 0x0081) {
239 edac_mc_handle_ce_no_info(mci, "UE overwrote CE");
240 info->errsts = info->errsts2;
241 }
242
243 info->eap >>= PAGE_SHIFT;
244 row = edac_mc_find_csrow_by_page(mci, info->eap);
245
246 if (info->errsts & 0x0080)
247 edac_mc_handle_ue(mci, info->eap, 0, row, "i82875p UE");
248 else
249 edac_mc_handle_ce(mci, info->eap, 0, info->derrsyn, row,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700250 multi_chan ? (info->des & 0x1) : 0,
251 "i82875p CE");
Alan Cox0d88a102006-01-18 17:44:10 -0800252
253 return 1;
254}
255
Alan Cox0d88a102006-01-18 17:44:10 -0800256static void i82875p_check(struct mem_ctl_info *mci)
257{
258 struct i82875p_error_info info;
259
Dave Peterson537fba22006-03-26 01:38:40 -0800260 debugf1("MC%d: %s()\n", mci->mc_idx, __func__);
Alan Cox0d88a102006-01-18 17:44:10 -0800261 i82875p_get_error_info(mci, &info);
262 i82875p_process_error_info(mci, &info, 1);
263}
264
Doug Thompson13189522006-06-30 01:56:08 -0700265/* Return 0 on success or 1 on failure. */
266static int i82875p_setup_overfl_dev(struct pci_dev *pdev,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700267 struct pci_dev **ovrfl_pdev,
268 void __iomem **ovrfl_window)
Alan Cox0d88a102006-01-18 17:44:10 -0800269{
Doug Thompson13189522006-06-30 01:56:08 -0700270 struct pci_dev *dev;
271 void __iomem *window;
Douglas Thompson1c521522007-07-19 01:50:17 -0700272 int err;
Alan Cox0d88a102006-01-18 17:44:10 -0800273
Doug Thompson13189522006-06-30 01:56:08 -0700274 *ovrfl_pdev = NULL;
275 *ovrfl_window = NULL;
276 dev = pci_get_device(PCI_VEND_DEV(INTEL, 82875_6), NULL);
Alan Cox0d88a102006-01-18 17:44:10 -0800277
Doug Thompson13189522006-06-30 01:56:08 -0700278 if (dev == NULL) {
279 /* Intel tells BIOS developers to hide device 6 which
Alan Cox0d88a102006-01-18 17:44:10 -0800280 * configures the overflow device access containing
281 * the DRBs - this is where we expose device 6.
282 * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm
283 */
284 pci_write_bits8(pdev, 0xf4, 0x2, 0x2);
Doug Thompson13189522006-06-30 01:56:08 -0700285 dev = pci_scan_single_device(pdev->bus, PCI_DEVFN(6, 0));
Dave Petersone7ecd892006-03-26 01:38:52 -0800286
Doug Thompson13189522006-06-30 01:56:08 -0700287 if (dev == NULL)
288 return 1;
John Feeney62456726d2007-05-08 00:28:12 -0700289
Douglas Thompson1c521522007-07-19 01:50:17 -0700290 err = pci_bus_add_device(dev);
291 if (err) {
292 i82875p_printk(KERN_ERR,
293 "%s(): pci_bus_add_device() Failed\n",
294 __func__);
295 }
Jarkko Lavinen307d1142008-12-01 13:14:06 -0800296 pci_bus_assign_resources(dev->bus);
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 */
Arjan van de Ven1dca00bd2009-01-06 14:42:56 -0800314 window = pci_ioremap_bar(dev, 0);
Doug Thompson13189522006-06-30 01:56:08 -0700315 if (window == NULL) {
Dave Peterson537fba22006-03-26 01:38:40 -0800316 i82875p_printk(KERN_ERR, "%s(): Failed to ioremap bar6\n",
Douglas Thompson052dfb42007-07-19 01:50:13 -0700317 __func__);
Dave Peterson637beb62006-03-26 01:38:44 -0800318 goto fail1;
Alan Cox0d88a102006-01-18 17:44:10 -0800319 }
320
Doug Thompson13189522006-06-30 01:56:08 -0700321 *ovrfl_window = window;
322 return 0;
323
Douglas Thompson052dfb42007-07-19 01:50:13 -0700324fail1:
Doug Thompson13189522006-06-30 01:56:08 -0700325 pci_release_regions(dev);
326
327#ifdef CORRECT_BIOS
Douglas Thompson052dfb42007-07-19 01:50:13 -0700328fail0:
Doug Thompson13189522006-06-30 01:56:08 -0700329 pci_disable_device(dev);
330#endif
331 /* NOTE: the ovrfl proc entry and pci_dev are intentionally left */
332 return 1;
333}
334
Doug Thompson13189522006-06-30 01:56:08 -0700335/* Return 1 if dual channel mode is active. Else return 0. */
336static inline int dual_channel_active(u32 drc)
337{
338 return (drc >> 21) & 0x1;
339}
340
Doug Thompson13189522006-06-30 01:56:08 -0700341static void i82875p_init_csrows(struct mem_ctl_info *mci,
Dave Jiang466b71d2007-07-19 01:50:05 -0700342 struct pci_dev *pdev,
343 void __iomem * ovrfl_window, u32 drc)
Doug Thompson13189522006-06-30 01:56:08 -0700344{
345 struct csrow_info *csrow;
346 unsigned long last_cumul_size;
347 u8 value;
Dave Jiang466b71d2007-07-19 01:50:05 -0700348 u32 drc_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */
Doug Thompson13189522006-06-30 01:56:08 -0700349 u32 cumul_size;
350 int index;
Alan Cox0d88a102006-01-18 17:44:10 -0800351
Dave Petersone7ecd892006-03-26 01:38:52 -0800352 drc_ddim = (drc >> 18) & 0x1;
Doug Thompson13189522006-06-30 01:56:08 -0700353 last_cumul_size = 0;
354
355 /* The dram row boundary (DRB) reg values are boundary address
356 * for each DRAM row with a granularity of 32 or 64MB (single/dual
357 * channel operation). DRB regs are cumulative; therefore DRB7 will
358 * contain the total memory contained in all eight rows.
359 */
360
361 for (index = 0; index < mci->nr_csrows; index++) {
362 csrow = &mci->csrows[index];
363
364 value = readb(ovrfl_window + I82875P_DRB + index);
365 cumul_size = value << (I82875P_DRB_SHIFT - PAGE_SHIFT);
366 debugf3("%s(): (%d) cumul_size 0x%x\n", __func__, index,
367 cumul_size);
368 if (cumul_size == last_cumul_size)
369 continue; /* not populated */
370
371 csrow->first_page = last_cumul_size;
372 csrow->last_page = cumul_size - 1;
373 csrow->nr_pages = cumul_size - last_cumul_size;
374 last_cumul_size = cumul_size;
375 csrow->grain = 1 << 12; /* I82875P_EAP has 4KiB reolution */
376 csrow->mtype = MEM_DDR;
377 csrow->dtype = DEV_UNKNOWN;
378 csrow->edac_mode = drc_ddim ? EDAC_SECDED : EDAC_NONE;
379 }
380}
381
382static int i82875p_probe1(struct pci_dev *pdev, int dev_idx)
383{
384 int rc = -ENODEV;
385 struct mem_ctl_info *mci;
386 struct i82875p_pvt *pvt;
387 struct pci_dev *ovrfl_pdev;
388 void __iomem *ovrfl_window;
389 u32 drc;
390 u32 nr_chans;
391 struct i82875p_error_info discard;
392
393 debugf0("%s()\n", __func__);
Hitoshi Mitakec3c52bc2008-04-29 01:03:18 -0700394
Doug Thompson13189522006-06-30 01:56:08 -0700395 ovrfl_pdev = pci_get_device(PCI_VEND_DEV(INTEL, 82875_6), NULL);
396
397 if (i82875p_setup_overfl_dev(pdev, &ovrfl_pdev, &ovrfl_window))
398 return -ENODEV;
399 drc = readl(ovrfl_window + I82875P_DRC);
400 nr_chans = dual_channel_active(drc) + 1;
Alan Cox0d88a102006-01-18 17:44:10 -0800401 mci = edac_mc_alloc(sizeof(*pvt), I82875P_NR_CSROWS(nr_chans),
Doug Thompsonb8f6f972007-07-19 01:50:26 -0700402 nr_chans, 0);
Alan Cox0d88a102006-01-18 17:44:10 -0800403
404 if (!mci) {
405 rc = -ENOMEM;
Doug Thompson13189522006-06-30 01:56:08 -0700406 goto fail0;
Alan Cox0d88a102006-01-18 17:44:10 -0800407 }
408
Jarkko Lavinen09a81262008-12-01 13:14:08 -0800409 /* Keeps mci available after edac_mc_del_mc() till edac_mc_free() */
410 kobject_get(&mci->edac_mci_kobj);
411
Dave Peterson537fba22006-03-26 01:38:40 -0800412 debugf3("%s(): init mci\n", __func__);
Doug Thompson37f04582006-06-30 01:56:07 -0700413 mci->dev = &pdev->dev;
Alan Cox0d88a102006-01-18 17:44:10 -0800414 mci->mtype_cap = MEM_FLAG_DDR;
Alan Cox0d88a102006-01-18 17:44:10 -0800415 mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
416 mci->edac_cap = EDAC_FLAG_UNKNOWN;
Dave Peterson680cbbb2006-03-26 01:38:41 -0800417 mci->mod_name = EDAC_MOD_STR;
Doug Thompson37f04582006-06-30 01:56:07 -0700418 mci->mod_ver = I82875P_REVISION;
Alan Cox0d88a102006-01-18 17:44:10 -0800419 mci->ctl_name = i82875p_devs[dev_idx].ctl_name;
Dave Jiangc4192702007-07-19 01:49:47 -0700420 mci->dev_name = pci_name(pdev);
Alan Cox0d88a102006-01-18 17:44:10 -0800421 mci->edac_check = i82875p_check;
422 mci->ctl_page_to_phys = NULL;
Dave Peterson537fba22006-03-26 01:38:40 -0800423 debugf3("%s(): init pvt\n", __func__);
Dave Jiang466b71d2007-07-19 01:50:05 -0700424 pvt = (struct i82875p_pvt *)mci->pvt_info;
Alan Cox0d88a102006-01-18 17:44:10 -0800425 pvt->ovrfl_pdev = ovrfl_pdev;
426 pvt->ovrfl_window = ovrfl_window;
Doug Thompson13189522006-06-30 01:56:08 -0700427 i82875p_init_csrows(mci, pdev, ovrfl_window, drc);
Dave Jiang466b71d2007-07-19 01:50:05 -0700428 i82875p_get_error_info(mci, &discard); /* clear counters */
Alan Cox0d88a102006-01-18 17:44:10 -0800429
Doug Thompson2d7bbb92006-06-30 01:56:08 -0700430 /* Here we assume that we will never see multiple instances of this
431 * type of memory controller. The ID is therefore hardcoded to 0.
432 */
Doug Thompsonb8f6f972007-07-19 01:50:26 -0700433 if (edac_mc_add_mc(mci)) {
Dave Peterson537fba22006-03-26 01:38:40 -0800434 debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
Doug Thompson13189522006-06-30 01:56:08 -0700435 goto fail1;
Alan Cox0d88a102006-01-18 17:44:10 -0800436 }
437
Dave Jiang456a2f92007-07-19 01:50:10 -0700438 /* allocating generic PCI control info */
439 i82875p_pci = edac_pci_create_generic_ctl(&pdev->dev, EDAC_MOD_STR);
440 if (!i82875p_pci) {
441 printk(KERN_WARNING
442 "%s(): Unable to create PCI control\n",
443 __func__);
444 printk(KERN_WARNING
445 "%s(): PCI error report via EDAC not setup\n",
446 __func__);
447 }
448
Alan Cox0d88a102006-01-18 17:44:10 -0800449 /* get this far and it's successful */
Dave Peterson537fba22006-03-26 01:38:40 -0800450 debugf3("%s(): success\n", __func__);
Alan Cox0d88a102006-01-18 17:44:10 -0800451 return 0;
452
Douglas Thompson052dfb42007-07-19 01:50:13 -0700453fail1:
Jarkko Lavinen09a81262008-12-01 13:14:08 -0800454 kobject_put(&mci->edac_mci_kobj);
Dave Peterson637beb62006-03-26 01:38:44 -0800455 edac_mc_free(mci);
Alan Cox0d88a102006-01-18 17:44:10 -0800456
Douglas Thompson052dfb42007-07-19 01:50:13 -0700457fail0:
Dave Peterson637beb62006-03-26 01:38:44 -0800458 iounmap(ovrfl_window);
Dave Peterson637beb62006-03-26 01:38:44 -0800459 pci_release_regions(ovrfl_pdev);
Alan Cox0d88a102006-01-18 17:44:10 -0800460
Dave Peterson637beb62006-03-26 01:38:44 -0800461 pci_disable_device(ovrfl_pdev);
Alan Cox0d88a102006-01-18 17:44:10 -0800462 /* NOTE: the ovrfl proc entry and pci_dev are intentionally left */
463 return rc;
464}
465
Alan Cox0d88a102006-01-18 17:44:10 -0800466/* returns count (>= 0), or negative on error */
467static int __devinit i82875p_init_one(struct pci_dev *pdev,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700468 const struct pci_device_id *ent)
Alan Cox0d88a102006-01-18 17:44:10 -0800469{
470 int rc;
471
Dave Peterson537fba22006-03-26 01:38:40 -0800472 debugf0("%s()\n", __func__);
Dave Peterson537fba22006-03-26 01:38:40 -0800473 i82875p_printk(KERN_INFO, "i82875p init one\n");
Dave Petersone7ecd892006-03-26 01:38:52 -0800474
475 if (pci_enable_device(pdev) < 0)
Alan Cox0d88a102006-01-18 17:44:10 -0800476 return -EIO;
Dave Petersone7ecd892006-03-26 01:38:52 -0800477
Alan Cox0d88a102006-01-18 17:44:10 -0800478 rc = i82875p_probe1(pdev, ent->driver_data);
Dave Petersone7ecd892006-03-26 01:38:52 -0800479
Alan Cox0d88a102006-01-18 17:44:10 -0800480 if (mci_pdev == NULL)
481 mci_pdev = pci_dev_get(pdev);
Dave Petersone7ecd892006-03-26 01:38:52 -0800482
Alan Cox0d88a102006-01-18 17:44:10 -0800483 return rc;
484}
485
Alan Cox0d88a102006-01-18 17:44:10 -0800486static void __devexit i82875p_remove_one(struct pci_dev *pdev)
487{
488 struct mem_ctl_info *mci;
489 struct i82875p_pvt *pvt = NULL;
490
Dave Peterson537fba22006-03-26 01:38:40 -0800491 debugf0("%s()\n", __func__);
Alan Cox0d88a102006-01-18 17:44:10 -0800492
Dave Jiang456a2f92007-07-19 01:50:10 -0700493 if (i82875p_pci)
494 edac_pci_release_generic_ctl(i82875p_pci);
495
Doug Thompson37f04582006-06-30 01:56:07 -0700496 if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)
Alan Cox0d88a102006-01-18 17:44:10 -0800497 return;
498
Dave Jiang466b71d2007-07-19 01:50:05 -0700499 pvt = (struct i82875p_pvt *)mci->pvt_info;
Dave Petersone7ecd892006-03-26 01:38:52 -0800500
Alan Cox0d88a102006-01-18 17:44:10 -0800501 if (pvt->ovrfl_window)
502 iounmap(pvt->ovrfl_window);
503
504 if (pvt->ovrfl_pdev) {
505#ifdef CORRECT_BIOS
506 pci_release_regions(pvt->ovrfl_pdev);
507#endif /*CORRECT_BIOS */
508 pci_disable_device(pvt->ovrfl_pdev);
509 pci_dev_put(pvt->ovrfl_pdev);
510 }
511
Alan Cox0d88a102006-01-18 17:44:10 -0800512 edac_mc_free(mci);
513}
514
Alan Cox0d88a102006-01-18 17:44:10 -0800515static const struct pci_device_id i82875p_pci_tbl[] __devinitdata = {
Dave Petersone7ecd892006-03-26 01:38:52 -0800516 {
Dave Jiang466b71d2007-07-19 01:50:05 -0700517 PCI_VEND_DEV(INTEL, 82875_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
518 I82875P},
Dave Petersone7ecd892006-03-26 01:38:52 -0800519 {
Dave Jiang466b71d2007-07-19 01:50:05 -0700520 0,
521 } /* 0 terminated list. */
Alan Cox0d88a102006-01-18 17:44:10 -0800522};
523
524MODULE_DEVICE_TABLE(pci, i82875p_pci_tbl);
525
Alan Cox0d88a102006-01-18 17:44:10 -0800526static struct pci_driver i82875p_driver = {
Dave Peterson680cbbb2006-03-26 01:38:41 -0800527 .name = EDAC_MOD_STR,
Alan Cox0d88a102006-01-18 17:44:10 -0800528 .probe = i82875p_init_one,
529 .remove = __devexit_p(i82875p_remove_one),
530 .id_table = i82875p_pci_tbl,
531};
532
Alan Coxda9bb1d2006-01-18 17:44:13 -0800533static int __init i82875p_init(void)
Alan Cox0d88a102006-01-18 17:44:10 -0800534{
535 int pci_rc;
536
Dave Peterson537fba22006-03-26 01:38:40 -0800537 debugf3("%s()\n", __func__);
Hitoshi Mitakec3c52bc2008-04-29 01:03:18 -0700538
539 /* Ensure that the OPSTATE is set correctly for POLL or NMI */
540 opstate_init();
541
Alan Cox0d88a102006-01-18 17:44:10 -0800542 pci_rc = pci_register_driver(&i82875p_driver);
Dave Petersone7ecd892006-03-26 01:38:52 -0800543
Alan Cox0d88a102006-01-18 17:44:10 -0800544 if (pci_rc < 0)
Dave Peterson637beb62006-03-26 01:38:44 -0800545 goto fail0;
Dave Petersone7ecd892006-03-26 01:38:52 -0800546
Alan Cox0d88a102006-01-18 17:44:10 -0800547 if (mci_pdev == NULL) {
Dave Petersone7ecd892006-03-26 01:38:52 -0800548 mci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700549 PCI_DEVICE_ID_INTEL_82875_0, NULL);
Dave Petersone7ecd892006-03-26 01:38:52 -0800550
Alan Cox0d88a102006-01-18 17:44:10 -0800551 if (!mci_pdev) {
552 debugf0("875p pci_get_device fail\n");
Dave Peterson637beb62006-03-26 01:38:44 -0800553 pci_rc = -ENODEV;
554 goto fail1;
Alan Cox0d88a102006-01-18 17:44:10 -0800555 }
Dave Petersone7ecd892006-03-26 01:38:52 -0800556
Alan Cox0d88a102006-01-18 17:44:10 -0800557 pci_rc = i82875p_init_one(mci_pdev, i82875p_pci_tbl);
Dave Petersone7ecd892006-03-26 01:38:52 -0800558
Alan Cox0d88a102006-01-18 17:44:10 -0800559 if (pci_rc < 0) {
560 debugf0("875p init fail\n");
Dave Peterson637beb62006-03-26 01:38:44 -0800561 pci_rc = -ENODEV;
562 goto fail1;
Alan Cox0d88a102006-01-18 17:44:10 -0800563 }
564 }
Dave Petersone7ecd892006-03-26 01:38:52 -0800565
Alan Cox0d88a102006-01-18 17:44:10 -0800566 return 0;
Dave Peterson637beb62006-03-26 01:38:44 -0800567
Douglas Thompson052dfb42007-07-19 01:50:13 -0700568fail1:
Dave Peterson637beb62006-03-26 01:38:44 -0800569 pci_unregister_driver(&i82875p_driver);
570
Douglas Thompson052dfb42007-07-19 01:50:13 -0700571fail0:
Dave Peterson637beb62006-03-26 01:38:44 -0800572 if (mci_pdev != NULL)
573 pci_dev_put(mci_pdev);
574
575 return pci_rc;
Alan Cox0d88a102006-01-18 17:44:10 -0800576}
577
Alan Cox0d88a102006-01-18 17:44:10 -0800578static void __exit i82875p_exit(void)
579{
Dave Peterson537fba22006-03-26 01:38:40 -0800580 debugf3("%s()\n", __func__);
Alan Cox0d88a102006-01-18 17:44:10 -0800581
Jarkko Lavinen09a81262008-12-01 13:14:08 -0800582 i82875p_remove_one(mci_pdev);
583 pci_dev_put(mci_pdev);
584
Alan Cox0d88a102006-01-18 17:44:10 -0800585 pci_unregister_driver(&i82875p_driver);
Dave Petersone7ecd892006-03-26 01:38:52 -0800586
Alan Cox0d88a102006-01-18 17:44:10 -0800587}
588
Alan Cox0d88a102006-01-18 17:44:10 -0800589module_init(i82875p_init);
590module_exit(i82875p_exit);
591
Alan Cox0d88a102006-01-18 17:44:10 -0800592MODULE_LICENSE("GPL");
593MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh");
594MODULE_DESCRIPTION("MC support for Intel 82875 memory hub controllers");
Hitoshi Mitakec3c52bc2008-04-29 01:03:18 -0700595
596module_param(edac_op_state, int, 0444);
597MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");