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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2006-01-18 20:44:08 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-18 22:20:31 -0500
commit806c35f5057a64d3061ee4e2b1023bf6f6d328e2 (patch)
tree89bc8ffd498475ca04a2760dabfd882e9de5e8b1
parent715b49ef2de6fcead0776d9349071670282faf65 (diff)
[PATCH] EDAC: drivers for AMD 76x and Intel E750x, E752x
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat
-rw-r--r--drivers/edac/amd76x_edac.c356
-rw-r--r--drivers/edac/e752x_edac.c1069
-rw-r--r--drivers/edac/e7xxx_edac.c558
3 files changed, 1983 insertions, 0 deletions
diff --git a/drivers/edac/amd76x_edac.c b/drivers/edac/amd76x_edac.c
new file mode 100644
index 000000000000..8e2b1295e70c
--- /dev/null
+++ b/drivers/edac/amd76x_edac.c
@@ -0,0 +1,356 @@
1/*
2 * AMD 76x 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 * Based on work by Dan Hollis <goemon at anime dot net> and others.
9 * http://www.anime.net/~goemon/linux-ecc/
10 *
11 * $Id: edac_amd76x.c,v 1.4.2.5 2005/10/05 00:43:44 dsp_llnl Exp $
12 *
13 */
14
15
16#include <linux/config.h>
17#include <linux/module.h>
18#include <linux/init.h>
19
20#include <linux/pci.h>
21#include <linux/pci_ids.h>
22
23#include <linux/slab.h>
24
25#include "edac_mc.h"
26
27
28#define AMD76X_NR_CSROWS 8
29#define AMD76X_NR_CHANS 1
30#define AMD76X_NR_DIMMS 4
31
32
33/* AMD 76x register addresses - device 0 function 0 - PCI bridge */
34#define AMD76X_ECC_MODE_STATUS 0x48 /* Mode and status of ECC (32b)
35 *
36 * 31:16 reserved
37 * 15:14 SERR enabled: x1=ue 1x=ce
38 * 13 reserved
39 * 12 diag: disabled, enabled
40 * 11:10 mode: dis, EC, ECC, ECC+scrub
41 * 9:8 status: x1=ue 1x=ce
42 * 7:4 UE cs row
43 * 3:0 CE cs row
44 */
45#define AMD76X_DRAM_MODE_STATUS 0x58 /* DRAM Mode and status (32b)
46 *
47 * 31:26 clock disable 5 - 0
48 * 25 SDRAM init
49 * 24 reserved
50 * 23 mode register service
51 * 22:21 suspend to RAM
52 * 20 burst refresh enable
53 * 19 refresh disable
54 * 18 reserved
55 * 17:16 cycles-per-refresh
56 * 15:8 reserved
57 * 7:0 x4 mode enable 7 - 0
58 */
59#define AMD76X_MEM_BASE_ADDR 0xC0 /* Memory base address (8 x 32b)
60 *
61 * 31:23 chip-select base
62 * 22:16 reserved
63 * 15:7 chip-select mask
64 * 6:3 reserved
65 * 2:1 address mode
66 * 0 chip-select enable
67 */
68
69
70struct amd76x_error_info {
71 u32 ecc_mode_status;
72};
73
74
75enum amd76x_chips {
76 AMD761 = 0,
77 AMD762
78};
79
80
81struct amd76x_dev_info {
82 const char *ctl_name;
83};
84
85
86static const struct amd76x_dev_info amd76x_devs[] = {
87 [AMD761] = {.ctl_name = "AMD761"},
88 [AMD762] = {.ctl_name = "AMD762"},
89};
90
91
92/**
93 * amd76x_get_error_info - fetch error information
94 * @mci: Memory controller
95 * @info: Info to fill in
96 *
97 * Fetch and store the AMD76x ECC status. Clear pending status
98 * on the chip so that further errors will be reported
99 */
100
101static void amd76x_get_error_info (struct mem_ctl_info *mci,
102 struct amd76x_error_info *info)
103{
104 pci_read_config_dword(mci->pdev, AMD76X_ECC_MODE_STATUS,
105 &info->ecc_mode_status);
106
107 if (info->ecc_mode_status & BIT(8))
108 pci_write_bits32(mci->pdev, AMD76X_ECC_MODE_STATUS,
109 (u32) BIT(8), (u32) BIT(8));
110
111 if (info->ecc_mode_status & BIT(9))
112 pci_write_bits32(mci->pdev, AMD76X_ECC_MODE_STATUS,
113 (u32) BIT(9), (u32) BIT(9));
114}
115
116
117/**
118 * amd76x_process_error_info - Error check
119 * @mci: Memory controller
120 * @info: Previously fetched information from chip
121 * @handle_errors: 1 if we should do recovery
122 *
123 * Process the chip state and decide if an error has occurred.
124 * A return of 1 indicates an error. Also if handle_errors is true
125 * then attempt to handle and clean up after the error
126 */
127
128static int amd76x_process_error_info (struct mem_ctl_info *mci,
129 struct amd76x_error_info *info, int handle_errors)
130{
131 int error_found;
132 u32 row;
133
134 error_found = 0;
135
136 /*
137 * Check for an uncorrectable error
138 */
139 if (info->ecc_mode_status & BIT(8)) {
140 error_found = 1;
141
142 if (handle_errors) {
143 row = (info->ecc_mode_status >> 4) & 0xf;
144 edac_mc_handle_ue(mci,
145 mci->csrows[row].first_page, 0, row,
146 mci->ctl_name);
147 }
148 }
149
150 /*
151 * Check for a correctable error
152 */
153 if (info->ecc_mode_status & BIT(9)) {
154 error_found = 1;
155
156 if (handle_errors) {
157 row = info->ecc_mode_status & 0xf;
158 edac_mc_handle_ce(mci,
159 mci->csrows[row].first_page, 0, 0, row, 0,
160 mci->ctl_name);
161 }
162 }
163 return error_found;
164}
165
166/**
167 * amd76x_check - Poll the controller
168 * @mci: Memory controller
169 *
170 * Called by the poll handlers this function reads the status
171 * from the controller and checks for errors.
172 */
173
174static void amd76x_check(struct mem_ctl_info *mci)
175{
176 struct amd76x_error_info info;
177 debugf3("MC: " __FILE__ ": %s()\n", __func__);
178 amd76x_get_error_info(mci, &info);
179 amd76x_process_error_info(mci, &info, 1);
180}
181
182
183/**
184 * amd76x_probe1 - Perform set up for detected device
185 * @pdev; PCI device detected
186 * @dev_idx: Device type index
187 *
188 * We have found an AMD76x and now need to set up the memory
189 * controller status reporting. We configure and set up the
190 * memory controller reporting and claim the device.
191 */
192
193static int amd76x_probe1(struct pci_dev *pdev, int dev_idx)
194{
195 int rc = -ENODEV;
196 int index;
197 struct mem_ctl_info *mci = NULL;
198 enum edac_type ems_modes[] = {
199 EDAC_NONE,
200 EDAC_EC,
201 EDAC_SECDED,
202 EDAC_SECDED
203 };
204 u32 ems;
205 u32 ems_mode;
206
207 debugf0("MC: " __FILE__ ": %s()\n", __func__);
208
209 pci_read_config_dword(pdev, AMD76X_ECC_MODE_STATUS, &ems);
210 ems_mode = (ems >> 10) & 0x3;
211
212 mci = edac_mc_alloc(0, AMD76X_NR_CSROWS, AMD76X_NR_CHANS);
213
214 if (mci == NULL) {
215 rc = -ENOMEM;
216 goto fail;
217 }
218
219 debugf0("MC: " __FILE__ ": %s(): mci = %p\n", __func__, mci);
220
221 mci->pdev = pci_dev_get(pdev);
222 mci->mtype_cap = MEM_FLAG_RDDR;
223
224 mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED;
225 mci->edac_cap = ems_mode ?
226 (EDAC_FLAG_EC | EDAC_FLAG_SECDED) : EDAC_FLAG_NONE;
227
228 mci->mod_name = BS_MOD_STR;
229 mci->mod_ver = "$Revision: 1.4.2.5 $";
230 mci->ctl_name = amd76x_devs[dev_idx].ctl_name;
231 mci->edac_check = amd76x_check;
232 mci->ctl_page_to_phys = NULL;
233
234 for (index = 0; index < mci->nr_csrows; index++) {
235 struct csrow_info *csrow = &mci->csrows[index];
236 u32 mba;
237 u32 mba_base;
238 u32 mba_mask;
239 u32 dms;
240
241 /* find the DRAM Chip Select Base address and mask */
242 pci_read_config_dword(mci->pdev,
243 AMD76X_MEM_BASE_ADDR + (index * 4),
244 &mba);
245
246 if (!(mba & BIT(0)))
247 continue;
248
249 mba_base = mba & 0xff800000UL;
250 mba_mask = ((mba & 0xff80) << 16) | 0x7fffffUL;
251
252 pci_read_config_dword(mci->pdev, AMD76X_DRAM_MODE_STATUS,
253 &dms);
254
255 csrow->first_page = mba_base >> PAGE_SHIFT;
256 csrow->nr_pages = (mba_mask + 1) >> PAGE_SHIFT;
257 csrow->last_page = csrow->first_page + csrow->nr_pages - 1;
258 csrow->page_mask = mba_mask >> PAGE_SHIFT;
259 csrow->grain = csrow->nr_pages << PAGE_SHIFT;
260 csrow->mtype = MEM_RDDR;
261 csrow->dtype = ((dms >> index) & 0x1) ? DEV_X4 : DEV_UNKNOWN;
262 csrow->edac_mode = ems_modes[ems_mode];
263 }
264
265 /* clear counters */
266 pci_write_bits32(mci->pdev, AMD76X_ECC_MODE_STATUS, (u32) (0x3 << 8),
267 (u32) (0x3 << 8));
268
269 if (edac_mc_add_mc(mci)) {
270 debugf3("MC: " __FILE__
271 ": %s(): failed edac_mc_add_mc()\n", __func__);
272 goto fail;
273 }
274
275 /* get this far and it's successful */
276 debugf3("MC: " __FILE__ ": %s(): success\n", __func__);
277 return 0;
278
279fail:
280 if (mci) {
281 if(mci->pdev)
282 pci_dev_put(mci->pdev);
283 edac_mc_free(mci);
284 }
285 return rc;
286}
287
288/* returns count (>= 0), or negative on error */
289static int __devinit amd76x_init_one(struct pci_dev *pdev,
290 const struct pci_device_id *ent)
291{
292 debugf0("MC: " __FILE__ ": %s()\n", __func__);
293
294 /* don't need to call pci_device_enable() */
295 return amd76x_probe1(pdev, ent->driver_data);
296}
297
298
299/**
300 * amd76x_remove_one - driver shutdown
301 * @pdev: PCI device being handed back
302 *
303 * Called when the driver is unloaded. Find the matching mci
304 * structure for the device then delete the mci and free the
305 * resources.
306 */
307
308static void __devexit amd76x_remove_one(struct pci_dev *pdev)
309{
310 struct mem_ctl_info *mci;
311
312 debugf0(__FILE__ ": %s()\n", __func__);
313
314 if ((mci = edac_mc_find_mci_by_pdev(pdev)) == NULL)
315 return;
316 if (edac_mc_del_mc(mci))
317 return;
318 pci_dev_put(mci->pdev);
319 edac_mc_free(mci);
320}
321
322
323static const struct pci_device_id amd76x_pci_tbl[] __devinitdata = {
324 {PCI_VEND_DEV(AMD, FE_GATE_700C), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
325 AMD762},
326 {PCI_VEND_DEV(AMD, FE_GATE_700E), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
327 AMD761},
328 {0,} /* 0 terminated list. */
329};
330
331MODULE_DEVICE_TABLE(pci, amd76x_pci_tbl);
332
333
334static struct pci_driver amd76x_driver = {
335 .name = BS_MOD_STR,
336 .probe = amd76x_init_one,
337 .remove = __devexit_p(amd76x_remove_one),
338 .id_table = amd76x_pci_tbl,
339};
340
341int __init amd76x_init(void)
342{
343 return pci_register_driver(&amd76x_driver);
344}
345
346static void __exit amd76x_exit(void)
347{
348 pci_unregister_driver(&amd76x_driver);
349}
350
351module_init(amd76x_init);
352module_exit(amd76x_exit);
353
354MODULE_LICENSE("GPL");
355MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh");
356MODULE_DESCRIPTION("MC support for AMD 76x memory controllers");
diff --git a/drivers/edac/e752x_edac.c b/drivers/edac/e752x_edac.c
new file mode 100644
index 000000000000..959f584f5687
--- /dev/null
+++ b/drivers/edac/e752x_edac.c
@@ -0,0 +1,1069 @@
1/*
2 * Intel e752x Memory Controller kernel module
3 * (C) 2004 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 e752x_chips" below for supported chipsets
8 *
9 * Written by Tom Zimmerman
10 *
11 * Contributors:
12 * Thayne Harbaugh at realmsys.com (?)
13 * Wang Zhenyu at intel.com
14 * Dave Jiang at mvista.com
15 *
16 * $Id: bluesmoke_e752x.c,v 1.5.2.11 2005/10/05 00:43:44 dsp_llnl Exp $
17 *
18 */
19
20
21#include <linux/config.h>
22#include <linux/module.h>
23#include <linux/init.h>
24
25#include <linux/pci.h>
26#include <linux/pci_ids.h>
27
28#include <linux/slab.h>
29
30#include "edac_mc.h"
31
32
33#ifndef PCI_DEVICE_ID_INTEL_7520_0
34#define PCI_DEVICE_ID_INTEL_7520_0 0x3590
35#endif /* PCI_DEVICE_ID_INTEL_7520_0 */
36
37#ifndef PCI_DEVICE_ID_INTEL_7520_1_ERR
38#define PCI_DEVICE_ID_INTEL_7520_1_ERR 0x3591
39#endif /* PCI_DEVICE_ID_INTEL_7520_1_ERR */
40
41#ifndef PCI_DEVICE_ID_INTEL_7525_0
42#define PCI_DEVICE_ID_INTEL_7525_0 0x359E
43#endif /* PCI_DEVICE_ID_INTEL_7525_0 */
44
45#ifndef PCI_DEVICE_ID_INTEL_7525_1_ERR
46#define PCI_DEVICE_ID_INTEL_7525_1_ERR 0x3593
47#endif /* PCI_DEVICE_ID_INTEL_7525_1_ERR */
48
49#ifndef PCI_DEVICE_ID_INTEL_7320_0
50#define PCI_DEVICE_ID_INTEL_7320_0 0x3592
51#endif /* PCI_DEVICE_ID_INTEL_7320_0 */
52
53#ifndef PCI_DEVICE_ID_INTEL_7320_1_ERR
54#define PCI_DEVICE_ID_INTEL_7320_1_ERR 0x3593
55#endif /* PCI_DEVICE_ID_INTEL_7320_1_ERR */
56
57#define E752X_NR_CSROWS 8 /* number of csrows */
58
59
60/* E752X register addresses - device 0 function 0 */
61#define E752X_DRB 0x60 /* DRAM row boundary register (8b) */
62#define E752X_DRA 0x70 /* DRAM row attribute register (8b) */
63 /*
64 * 31:30 Device width row 7
65 * 01=x8 10=x4 11=x8 DDR2
66 * 27:26 Device width row 6
67 * 23:22 Device width row 5
68 * 19:20 Device width row 4
69 * 15:14 Device width row 3
70 * 11:10 Device width row 2
71 * 7:6 Device width row 1
72 * 3:2 Device width row 0
73 */
74#define E752X_DRC 0x7C /* DRAM controller mode reg (32b) */
75 /* FIXME:IS THIS RIGHT? */
76 /*
77 * 22 Number channels 0=1,1=2
78 * 19:18 DRB Granularity 32/64MB
79 */
80#define E752X_DRM 0x80 /* Dimm mapping register */
81#define E752X_DDRCSR 0x9A /* DDR control and status reg (16b) */
82 /*
83 * 14:12 1 single A, 2 single B, 3 dual
84 */
85#define E752X_TOLM 0xC4 /* DRAM top of low memory reg (16b) */
86#define E752X_REMAPBASE 0xC6 /* DRAM remap base address reg (16b) */
87#define E752X_REMAPLIMIT 0xC8 /* DRAM remap limit address reg (16b) */
88#define E752X_REMAPOFFSET 0xCA /* DRAM remap limit offset reg (16b) */
89
90/* E752X register addresses - device 0 function 1 */
91#define E752X_FERR_GLOBAL 0x40 /* Global first error register (32b) */
92#define E752X_NERR_GLOBAL 0x44 /* Global next error register (32b) */
93#define E752X_HI_FERR 0x50 /* Hub interface first error reg (8b) */
94#define E752X_HI_NERR 0x52 /* Hub interface next error reg (8b) */
95#define E752X_HI_ERRMASK 0x54 /* Hub interface error mask reg (8b) */
96#define E752X_HI_SMICMD 0x5A /* Hub interface SMI command reg (8b) */
97#define E752X_SYSBUS_FERR 0x60 /* System buss first error reg (16b) */
98#define E752X_SYSBUS_NERR 0x62 /* System buss next error reg (16b) */
99#define E752X_SYSBUS_ERRMASK 0x64 /* System buss error mask reg (16b) */
100#define E752X_SYSBUS_SMICMD 0x6A /* System buss SMI command reg (16b) */
101#define E752X_BUF_FERR 0x70 /* Memory buffer first error reg (8b) */
102#define E752X_BUF_NERR 0x72 /* Memory buffer next error reg (8b) */
103#define E752X_BUF_ERRMASK 0x74 /* Memory buffer error mask reg (8b) */
104#define E752X_BUF_SMICMD 0x7A /* Memory buffer SMI command reg (8b) */
105#define E752X_DRAM_FERR 0x80 /* DRAM first error register (16b) */
106#define E752X_DRAM_NERR 0x82 /* DRAM next error register (16b) */
107#define E752X_DRAM_ERRMASK 0x84 /* DRAM error mask register (8b) */
108#define E752X_DRAM_SMICMD 0x8A /* DRAM SMI command register (8b) */
109#define E752X_DRAM_RETR_ADD 0xAC /* DRAM Retry address register (32b) */
110#define E752X_DRAM_SEC1_ADD 0xA0 /* DRAM first correctable memory */
111 /* error address register (32b) */
112 /*
113 * 31 Reserved
114 * 30:2 CE address (64 byte block 34:6)
115 * 1 Reserved
116 * 0 HiLoCS
117 */
118#define E752X_DRAM_SEC2_ADD 0xC8 /* DRAM first correctable memory */
119 /* error address register (32b) */
120 /*
121 * 31 Reserved
122 * 30:2 CE address (64 byte block 34:6)
123 * 1 Reserved
124 * 0 HiLoCS
125 */
126#define E752X_DRAM_DED_ADD 0xA4 /* DRAM first uncorrectable memory */
127 /* error address register (32b) */
128 /*
129 * 31 Reserved
130 * 30:2 CE address (64 byte block 34:6)
131 * 1 Reserved
132 * 0 HiLoCS
133 */
134#define E752X_DRAM_SCRB_ADD 0xA8 /* DRAM first uncorrectable scrub memory */
135 /* error address register (32b) */
136 /*
137 * 31 Reserved
138 * 30:2 CE address (64 byte block 34:6)
139 * 1 Reserved
140 * 0 HiLoCS
141 */
142#define E752X_DRAM_SEC1_SYNDROME 0xC4 /* DRAM first correctable memory */
143 /* error syndrome register (16b) */
144#define E752X_DRAM_SEC2_SYNDROME 0xC6 /* DRAM second correctable memory */
145 /* error syndrome register (16b) */
146#define E752X_DEVPRES1 0xF4 /* Device Present 1 register (8b) */
147
148/* ICH5R register addresses - device 30 function 0 */
149#define ICH5R_PCI_STAT 0x06 /* PCI status register (16b) */
150#define ICH5R_PCI_2ND_STAT 0x1E /* PCI status secondary reg (16b) */
151#define ICH5R_PCI_BRIDGE_CTL 0x3E /* PCI bridge control register (16b) */
152
153enum e752x_chips {
154 E7520 = 0,
155 E7525 = 1,
156 E7320 = 2
157};
158
159
160struct e752x_pvt {
161 struct pci_dev *bridge_ck;
162 struct pci_dev *dev_d0f0;
163 struct pci_dev *dev_d0f1;
164 u32 tolm;
165 u32 remapbase;
166 u32 remaplimit;
167 int mc_symmetric;
168 u8 map[8];
169 int map_type;
170 const struct e752x_dev_info *dev_info;
171};
172
173
174struct e752x_dev_info {
175 u16 err_dev;
176 const char *ctl_name;
177};
178
179struct e752x_error_info {
180 u32 ferr_global;
181 u32 nerr_global;
182 u8 hi_ferr;
183 u8 hi_nerr;
184 u16 sysbus_ferr;
185 u16 sysbus_nerr;
186 u8 buf_ferr;
187 u8 buf_nerr;
188 u16 dram_ferr;
189 u16 dram_nerr;
190 u32 dram_sec1_add;
191 u32 dram_sec2_add;
192 u16 dram_sec1_syndrome;
193 u16 dram_sec2_syndrome;
194 u32 dram_ded_add;
195 u32 dram_scrb_add;
196 u32 dram_retr_add;
197};
198
199static const struct e752x_dev_info e752x_devs[] = {
200 [E7520] = {
201 .err_dev = PCI_DEVICE_ID_INTEL_7520_1_ERR,
202 .ctl_name = "E7520"},
203 [E7525] = {
204 .err_dev = PCI_DEVICE_ID_INTEL_7525_1_ERR,
205 .ctl_name = "E7525"},
206 [E7320] = {
207 .err_dev = PCI_DEVICE_ID_INTEL_7320_1_ERR,
208 .ctl_name = "E7320"},
209};
210
211
212static unsigned long ctl_page_to_phys(struct mem_ctl_info *mci,
213 unsigned long page)
214{
215 u32 remap;
216 struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info;
217
218 debugf3("MC: " __FILE__ ": %s()\n", __func__);
219
220 if (page < pvt->tolm)
221 return page;
222 if ((page >= 0x100000) && (page < pvt->remapbase))
223 return page;
224 remap = (page - pvt->tolm) + pvt->remapbase;
225 if (remap < pvt->remaplimit)
226 return remap;
227 printk(KERN_ERR "Invalid page %lx - out of range\n", page);
228 return pvt->tolm - 1;
229}
230
231static void do_process_ce(struct mem_ctl_info *mci, u16 error_one,
232 u32 sec1_add, u16 sec1_syndrome)
233{
234 u32 page;
235 int row;
236 int channel;
237 int i;
238 struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info;
239
240 debugf3("MC: " __FILE__ ": %s()\n", __func__);
241
242 /* convert the addr to 4k page */
243 page = sec1_add >> (PAGE_SHIFT - 4);
244
245 /* FIXME - check for -1 */
246 if (pvt->mc_symmetric) {
247 /* chip select are bits 14 & 13 */
248 row = ((page >> 1) & 3);
249 printk(KERN_WARNING
250 "Test row %d Table %d %d %d %d %d %d %d %d\n",
251 row, pvt->map[0], pvt->map[1], pvt->map[2],
252 pvt->map[3], pvt->map[4], pvt->map[5],
253 pvt->map[6], pvt->map[7]);
254
255 /* test for channel remapping */
256 for (i = 0; i < 8; i++) {
257 if (pvt->map[i] == row)
258 break;
259 }
260 printk(KERN_WARNING "Test computed row %d\n", i);
261 if (i < 8)
262 row = i;
263 else
264 printk(KERN_WARNING
265 "MC%d: row %d not found in remap table\n",
266 mci->mc_idx, row);
267 } else
268 row = edac_mc_find_csrow_by_page(mci, page);
269 /* 0 = channel A, 1 = channel B */
270 channel = !(error_one & 1);
271
272 if (!pvt->map_type)
273 row = 7 - row;
274 edac_mc_handle_ce(mci, page, 0, sec1_syndrome, row, channel,
275 "e752x CE");
276}
277
278
279static inline void process_ce(struct mem_ctl_info *mci, u16 error_one,
280 u32 sec1_add, u16 sec1_syndrome, int *error_found,
281 int handle_error)
282{
283 *error_found = 1;
284
285 if (handle_error)
286 do_process_ce(mci, error_one, sec1_add, sec1_syndrome);
287}
288
289static void do_process_ue(struct mem_ctl_info *mci, u16 error_one, u32 ded_add,
290 u32 scrb_add)
291{
292 u32 error_2b, block_page;
293 int row;
294 struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info;
295
296 debugf3("MC: " __FILE__ ": %s()\n", __func__);
297
298 if (error_one & 0x0202) {
299 error_2b = ded_add;
300 /* convert to 4k address */
301 block_page = error_2b >> (PAGE_SHIFT - 4);
302 row = pvt->mc_symmetric ?
303 /* chip select are bits 14 & 13 */
304 ((block_page >> 1) & 3) :
305 edac_mc_find_csrow_by_page(mci, block_page);
306 edac_mc_handle_ue(mci, block_page, 0, row,
307 "e752x UE from Read");
308 }
309 if (error_one & 0x0404) {
310 error_2b = scrb_add;
311 /* convert to 4k address */
312 block_page = error_2b >> (PAGE_SHIFT - 4);
313 row = pvt->mc_symmetric ?
314 /* chip select are bits 14 & 13 */
315 ((block_page >> 1) & 3) :
316 edac_mc_find_csrow_by_page(mci, block_page);
317 edac_mc_handle_ue(mci, block_page, 0, row,
318 "e752x UE from Scruber");
319 }
320}
321
322static inline void process_ue(struct mem_ctl_info *mci, u16 error_one,
323 u32 ded_add, u32 scrb_add, int *error_found, int handle_error)
324{
325 *error_found = 1;
326
327 if (handle_error)
328 do_process_ue(mci, error_one, ded_add, scrb_add);
329}
330
331static inline void process_ue_no_info_wr(struct mem_ctl_info *mci,
332 int *error_found, int handle_error)
333{
334 *error_found = 1;
335
336 if (!handle_error)
337 return;
338
339 debugf3("MC: " __FILE__ ": %s()\n", __func__);
340 edac_mc_handle_ue_no_info(mci, "e752x UE log memory write");
341}
342
343static void do_process_ded_retry(struct mem_ctl_info *mci, u16 error,
344 u32 retry_add)
345{
346 u32 error_1b, page;
347 int row;
348 struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info;
349
350 error_1b = retry_add;
351 page = error_1b >> (PAGE_SHIFT - 4); /* convert the addr to 4k page */
352 row = pvt->mc_symmetric ?
353 ((page >> 1) & 3) : /* chip select are bits 14 & 13 */
354 edac_mc_find_csrow_by_page(mci, page);
355 printk(KERN_WARNING
356 "MC%d: CE page 0x%lx, row %d : Memory read retry\n",
357 mci->mc_idx, (long unsigned int) page, row);
358}
359
360static inline void process_ded_retry(struct mem_ctl_info *mci, u16 error,
361 u32 retry_add, int *error_found, int handle_error)
362{
363 *error_found = 1;
364
365 if (handle_error)
366 do_process_ded_retry(mci, error, retry_add);
367}
368
369static inline void process_threshold_ce(struct mem_ctl_info *mci, u16 error,
370 int *error_found, int handle_error)
371{
372 *error_found = 1;
373
374 if (handle_error)
375 printk(KERN_WARNING "MC%d: Memory threshold CE\n",
376 mci->mc_idx);
377}
378
379char *global_message[11] = {
380 "PCI Express C1", "PCI Express C", "PCI Express B1",
381 "PCI Express B", "PCI Express A1", "PCI Express A",
382 "DMA Controler", "HUB Interface", "System Bus",
383 "DRAM Controler", "Internal Buffer"
384};
385
386char *fatal_message[2] = { "Non-Fatal ", "Fatal " };
387
388static void do_global_error(int fatal, u32 errors)
389{
390 int i;
391
392 for (i = 0; i < 11; i++) {
393 if (errors & (1 << i))
394 printk(KERN_WARNING "%sError %s\n",
395 fatal_message[fatal], global_message[i]);
396 }
397}
398
399static inline void global_error(int fatal, u32 errors, int *error_found,
400 int handle_error)
401{
402 *error_found = 1;
403
404 if (handle_error)
405 do_global_error(fatal, errors);
406}
407
408char *hub_message[7] = {
409 "HI Address or Command Parity", "HI Illegal Access",
410 "HI Internal Parity", "Out of Range Access",
411 "HI Data Parity", "Enhanced Config Access",
412 "Hub Interface Target Abort"
413};
414
415static void do_hub_error(int fatal, u8 errors)
416{
417 int i;
418
419 for (i = 0; i < 7; i++) {
420 if (errors & (1 << i))
421 printk(KERN_WARNING "%sError %s\n",
422 fatal_message[fatal], hub_message[i]);
423 }
424}
425
426static inline void hub_error(int fatal, u8 errors, int *error_found,
427 int handle_error)
428{
429 *error_found = 1;
430
431 if (handle_error)
432 do_hub_error(fatal, errors);
433}
434
435char *membuf_message[4] = {
436 "Internal PMWB to DRAM parity",
437 "Internal PMWB to System Bus Parity",
438 "Internal System Bus or IO to PMWB Parity",
439 "Internal DRAM to PMWB Parity"
440};
441
442static void do_membuf_error(u8 errors)
443{
444 int i;
445
446 for (i = 0; i < 4; i++) {
447 if (errors & (1 << i))
448 printk(KERN_WARNING "Non-Fatal Error %s\n",
449 membuf_message[i]);
450 }
451}
452
453static inline void membuf_error(u8 errors, int *error_found, int handle_error)
454{
455 *error_found = 1;
456
457 if (handle_error)
458 do_membuf_error(errors);
459}
460
461char *sysbus_message[10] = {
462 "Addr or Request Parity",
463 "Data Strobe Glitch",
464 "Addr Strobe Glitch",
465 "Data Parity",
466 "Addr Above TOM",
467 "Non DRAM Lock Error",
468 "MCERR", "BINIT",
469 "Memory Parity",
470 "IO Subsystem Parity"
471};
472
473static void do_sysbus_error(int fatal, u32 errors)
474{
475 int i;
476
477 for (i = 0; i < 10; i++) {
478 if (errors & (1 << i))
479 printk(KERN_WARNING "%sError System Bus %s\n",
480 fatal_message[fatal], global_message[i]);
481 }
482}
483
484static inline void sysbus_error(int fatal, u32 errors, int *error_found,
485 int handle_error)
486{
487 *error_found = 1;
488
489 if (handle_error)
490 do_sysbus_error(fatal, errors);
491}
492
493static void e752x_check_hub_interface (struct e752x_error_info *info,
494 int *error_found, int handle_error)
495{
496 u8 stat8;
497
498 //pci_read_config_byte(dev,E752X_HI_FERR,&stat8);
499 stat8 = info->hi_ferr;
500 if(stat8 & 0x7f) { /* Error, so process */
501 stat8 &= 0x7f;
502 if(stat8 & 0x2b)
503 hub_error(1, stat8 & 0x2b, error_found, handle_error);
504 if(stat8 & 0x54)
505 hub_error(0, stat8 & 0x54, error_found, handle_error);
506 }
507 //pci_read_config_byte(dev,E752X_HI_NERR,&stat8);
508 stat8 = info->hi_nerr;
509 if(stat8 & 0x7f) { /* Error, so process */
510 stat8 &= 0x7f;
511 if (stat8 & 0x2b)
512 hub_error(1, stat8 & 0x2b, error_found, handle_error);
513 if(stat8 & 0x54)
514 hub_error(0, stat8 & 0x54, error_found, handle_error);
515 }
516}
517
518static void e752x_check_sysbus (struct e752x_error_info *info, int *error_found,
519 int handle_error)
520{
521 u32 stat32, error32;
522
523 //pci_read_config_dword(dev,E752X_SYSBUS_FERR,&stat32);
524 stat32 = info->sysbus_ferr + (info->sysbus_nerr << 16);
525
526 if (stat32 == 0)
527 return; /* no errors */
528
529 error32 = (stat32 >> 16) & 0x3ff;
530 stat32 = stat32 & 0x3ff;
531 if(stat32 & 0x083)
532 sysbus_error(1, stat32 & 0x083, error_found, handle_error);
533 if(stat32 & 0x37c)
534 sysbus_error(0, stat32 & 0x37c, error_found, handle_error);
535 if(error32 & 0x083)
536 sysbus_error(1, error32 & 0x083, error_found, handle_error);
537 if(error32 & 0x37c)
538 sysbus_error(0, error32 & 0x37c, error_found, handle_error);
539}
540
541static void e752x_check_membuf (struct e752x_error_info *info, int *error_found,
542 int handle_error)
543{
544 u8 stat8;
545
546 stat8 = info->buf_ferr;
547 if (stat8 & 0x0f) { /* Error, so process */
548 stat8 &= 0x0f;
549 membuf_error(stat8, error_found, handle_error);
550 }
551 stat8 = info->buf_nerr;
552 if (stat8 & 0x0f) { /* Error, so process */
553 stat8 &= 0x0f;
554 membuf_error(stat8, error_found, handle_error);
555 }
556}
557
558static void e752x_check_dram (struct mem_ctl_info *mci,
559 struct e752x_error_info *info, int *error_found, int handle_error)
560{
561 u16 error_one, error_next;
562
563 error_one = info->dram_ferr;
564 error_next = info->dram_nerr;
565
566 /* decode and report errors */
567 if(error_one & 0x0101) /* check first error correctable */
568 process_ce(mci, error_one, info->dram_sec1_add,
569 info->dram_sec1_syndrome, error_found,
570 handle_error);
571
572 if(error_next & 0x0101) /* check next error correctable */
573 process_ce(mci, error_next, info->dram_sec2_add,
574 info->dram_sec2_syndrome, error_found,
575 handle_error);
576
577 if(error_one & 0x4040)
578 process_ue_no_info_wr(mci, error_found, handle_error);
579
580 if(error_next & 0x4040)
581 process_ue_no_info_wr(mci, error_found, handle_error);
582
583 if(error_one & 0x2020)
584 process_ded_retry(mci, error_one, info->dram_retr_add,
585 error_found, handle_error);
586
587 if(error_next & 0x2020)
588 process_ded_retry(mci, error_next, info->dram_retr_add,
589 error_found, handle_error);
590
591 if(error_one & 0x0808)
592 process_threshold_ce(mci, error_one, error_found,
593 handle_error);
594
595 if(error_next & 0x0808)
596 process_threshold_ce(mci, error_next, error_found,
597 handle_error);
598
599 if(error_one & 0x0606)
600 process_ue(mci, error_one, info->dram_ded_add,
601 info->dram_scrb_add, error_found, handle_error);
602
603 if(error_next & 0x0606)
604 process_ue(mci, error_next, info->dram_ded_add,
605 info->dram_scrb_add, error_found, handle_error);
606}
607
608static void e752x_get_error_info (struct mem_ctl_info *mci,
609 struct e752x_error_info *info)
610{
611 struct pci_dev *dev;
612 struct e752x_pvt *pvt;
613
614 memset(info, 0, sizeof(*info));
615 pvt = (struct e752x_pvt *) mci->pvt_info;
616 dev = pvt->dev_d0f1;
617
618 pci_read_config_dword(dev, E752X_FERR_GLOBAL, &info->ferr_global);
619
620 if (info->ferr_global) {
621 pci_read_config_byte(dev, E752X_HI_FERR, &info->hi_ferr);
622 pci_read_config_word(dev, E752X_SYSBUS_FERR,
623 &info->sysbus_ferr);
624 pci_read_config_byte(dev, E752X_BUF_FERR, &info->buf_ferr);
625 pci_read_config_word(dev, E752X_DRAM_FERR,
626 &info->dram_ferr);
627 pci_read_config_dword(dev, E752X_DRAM_SEC1_ADD,
628 &info->dram_sec1_add);
629 pci_read_config_word(dev, E752X_DRAM_SEC1_SYNDROME,
630 &info->dram_sec1_syndrome);
631 pci_read_config_dword(dev, E752X_DRAM_DED_ADD,
632 &info->dram_ded_add);
633 pci_read_config_dword(dev, E752X_DRAM_SCRB_ADD,
634 &info->dram_scrb_add);
635 pci_read_config_dword(dev, E752X_DRAM_RETR_ADD,
636 &info->dram_retr_add);
637
638 if (info->hi_ferr & 0x7f)
639 pci_write_config_byte(dev, E752X_HI_FERR,
640 info->hi_ferr);
641
642 if (info->sysbus_ferr)
643 pci_write_config_word(dev, E752X_SYSBUS_FERR,
644 info->sysbus_ferr);
645
646 if (info->buf_ferr & 0x0f)
647 pci_write_config_byte(dev, E752X_BUF_FERR,
648 info->buf_ferr);
649
650 if (info->dram_ferr)
651 pci_write_bits16(pvt->bridge_ck, E752X_DRAM_FERR,
652 info->dram_ferr, info->dram_ferr);
653
654 pci_write_config_dword(dev, E752X_FERR_GLOBAL,
655 info->ferr_global);
656 }
657
658 pci_read_config_dword(dev, E752X_NERR_GLOBAL, &info->nerr_global);
659
660 if (info->nerr_global) {
661 pci_read_config_byte(dev, E752X_HI_NERR, &info->hi_nerr);
662 pci_read_config_word(dev, E752X_SYSBUS_NERR,
663 &info->sysbus_nerr);
664 pci_read_config_byte(dev, E752X_BUF_NERR, &info->buf_nerr);
665 pci_read_config_word(dev, E752X_DRAM_NERR,
666 &info->dram_nerr);
667 pci_read_config_dword(dev, E752X_DRAM_SEC2_ADD,
668 &info->dram_sec2_add);
669 pci_read_config_word(dev, E752X_DRAM_SEC2_SYNDROME,
670 &info->dram_sec2_syndrome);
671
672 if (info->hi_nerr & 0x7f)
673 pci_write_config_byte(dev, E752X_HI_NERR,
674 info->hi_nerr);
675
676 if (info->sysbus_nerr)
677 pci_write_config_word(dev, E752X_SYSBUS_NERR,
678 info->sysbus_nerr);
679
680 if (info->buf_nerr & 0x0f)
681 pci_write_config_byte(dev, E752X_BUF_NERR,
682 info->buf_nerr);
683
684 if (info->dram_nerr)
685 pci_write_bits16(pvt->bridge_ck, E752X_DRAM_NERR,
686 info->dram_nerr, info->dram_nerr);
687
688 pci_write_config_dword(dev, E752X_NERR_GLOBAL,
689 info->nerr_global);
690 }
691}
692
693static int e752x_process_error_info (struct mem_ctl_info *mci,
694 struct e752x_error_info *info, int handle_errors)
695{
696 u32 error32, stat32;
697 int error_found;
698
699 error_found = 0;
700 error32 = (info->ferr_global >> 18) & 0x3ff;
701 stat32 = (info->ferr_global >> 4) & 0x7ff;
702
703 if (error32)
704 global_error(1, error32, &error_found, handle_errors);
705
706 if (stat32)
707 global_error(0, stat32, &error_found, handle_errors);
708
709 error32 = (info->nerr_global >> 18) & 0x3ff;
710 stat32 = (info->nerr_global >> 4) & 0x7ff;
711
712 if (error32)
713 global_error(1, error32, &error_found, handle_errors);
714
715 if (stat32)
716 global_error(0, stat32, &error_found, handle_errors);
717
718 e752x_check_hub_interface(info, &error_found, handle_errors);
719 e752x_check_sysbus(info, &error_found, handle_errors);
720 e752x_check_membuf(info, &error_found, handle_errors);
721 e752x_check_dram(mci, info, &error_found, handle_errors);
722 return error_found;
723}
724
725static void e752x_check(struct mem_ctl_info *mci)
726{
727 struct e752x_error_info info;
728 debugf3("MC: " __FILE__ ": %s()\n", __func__);
729 e752x_get_error_info(mci, &info);
730 e752x_process_error_info(mci, &info, 1);
731}
732
733static int e752x_probe1(struct pci_dev *pdev, int dev_idx)
734{
735 int rc = -ENODEV;
736 int index;
737 u16 pci_data, stat;
738 u32 stat32;
739 u16 stat16;
740 u8 stat8;
741 struct mem_ctl_info *mci = NULL;
742 struct e752x_pvt *pvt = NULL;
743 u16 ddrcsr;
744 u32 drc;
745 int drc_chan; /* Number of channels 0=1chan,1=2chan */
746 int drc_drbg; /* DRB granularity 0=64mb,1=128mb */
747 int drc_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */
748 u32 dra;
749 unsigned long last_cumul_size;
750 struct pci_dev *pres_dev;
751 struct pci_dev *dev = NULL;
752
753 debugf0("MC: " __FILE__ ": %s(): mci\n", __func__);
754 debugf0("Starting Probe1\n");
755
756 /* enable device 0 function 1 */
757 pci_read_config_byte(pdev, E752X_DEVPRES1, &stat8);
758 stat8 |= (1 << 5);
759 pci_write_config_byte(pdev, E752X_DEVPRES1, stat8);
760
761 /* need to find out the number of channels */
762 pci_read_config_dword(pdev, E752X_DRC, &drc);
763 pci_read_config_word(pdev, E752X_DDRCSR, &ddrcsr);
764 /* FIXME: should check >>12 or 0xf, true for all? */
765 /* Dual channel = 1, Single channel = 0 */
766 drc_chan = (((ddrcsr >> 12) & 3) == 3);
767 drc_drbg = drc_chan + 1; /* 128 in dual mode, 64 in single */
768 drc_ddim = (drc >> 20) & 0x3;
769
770 mci = edac_mc_alloc(sizeof(*pvt), E752X_NR_CSROWS, drc_chan + 1);
771
772 if (mci == NULL) {
773 rc = -ENOMEM;
774 goto fail;
775 }
776
777 debugf3("MC: " __FILE__ ": %s(): init mci\n", __func__);
778
779 mci->mtype_cap = MEM_FLAG_RDDR;
780 mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED |
781 EDAC_FLAG_S4ECD4ED;
782 /* FIXME - what if different memory types are in different csrows? */
783 mci->mod_name = BS_MOD_STR;
784 mci->mod_ver = "$Revision: 1.5.2.11 $";
785 mci->pdev = pdev;
786
787 debugf3("MC: " __FILE__ ": %s(): init pvt\n", __func__);
788 pvt = (struct e752x_pvt *) mci->pvt_info;
789 pvt->dev_info = &e752x_devs[dev_idx];
790 pvt->bridge_ck = pci_get_device(PCI_VENDOR_ID_INTEL,
791 pvt->dev_info->err_dev,
792 pvt->bridge_ck);
793 if (pvt->bridge_ck == NULL)
794 pvt->bridge_ck = pci_scan_single_device(pdev->bus,
795 PCI_DEVFN(0, 1));
796 if (pvt->bridge_ck == NULL) {
797 printk(KERN_ERR "MC: error reporting device not found:"
798 "vendor %x device 0x%x (broken BIOS?)\n",
799 PCI_VENDOR_ID_INTEL, e752x_devs[dev_idx].err_dev);
800 goto fail;
801 }
802 pvt->mc_symmetric = ((ddrcsr & 0x10) != 0);
803
804 debugf3("MC: " __FILE__ ": %s(): more mci init\n", __func__);
805 mci->ctl_name = pvt->dev_info->ctl_name;
806 mci->edac_check = e752x_check;
807 mci->ctl_page_to_phys = ctl_page_to_phys;
808
809 /* find out the device types */
810 pci_read_config_dword(pdev, E752X_DRA, &dra);
811
812 /*
813 * The dram row boundary (DRB) reg values are boundary address for
814 * each DRAM row with a granularity of 64 or 128MB (single/dual
815 * channel operation). DRB regs are cumulative; therefore DRB7 will
816 * contain the total memory contained in all eight rows.
817 */
818 for (last_cumul_size = index = 0; index < mci->nr_csrows; index++) {
819 u8 value;
820 u32 cumul_size;
821 /* mem_dev 0=x8, 1=x4 */
822 int mem_dev = (dra >> (index * 4 + 2)) & 0x3;
823 struct csrow_info *csrow = &mci->csrows[index];
824
825 mem_dev = (mem_dev == 2);
826 pci_read_config_byte(mci->pdev, E752X_DRB + index, &value);
827 /* convert a 128 or 64 MiB DRB to a page size. */
828 cumul_size = value << (25 + drc_drbg - PAGE_SHIFT);
829 debugf3("MC: " __FILE__ ": %s(): (%d) cumul_size 0x%x\n",
830 __func__, index, cumul_size);
831 if (cumul_size == last_cumul_size)
832 continue; /* not populated */
833
834 csrow->first_page = last_cumul_size;
835 csrow->last_page = cumul_size - 1;
836 csrow->nr_pages = cumul_size - last_cumul_size;
837 last_cumul_size = cumul_size;
838 csrow->grain = 1 << 12; /* 4KiB - resolution of CELOG */
839 csrow->mtype = MEM_RDDR; /* only one type supported */
840 csrow->dtype = mem_dev ? DEV_X4 : DEV_X8;
841
842 /*
843 * if single channel or x8 devices then SECDED
844 * if dual channel and x4 then S4ECD4ED
845 */
846 if (drc_ddim) {
847 if (drc_chan && mem_dev) {
848 csrow->edac_mode = EDAC_S4ECD4ED;
849 mci->edac_cap |= EDAC_FLAG_S4ECD4ED;
850 } else {
851 csrow->edac_mode = EDAC_SECDED;
852 mci->edac_cap |= EDAC_FLAG_SECDED;
853 }
854 } else
855 csrow->edac_mode = EDAC_NONE;
856 }
857
858 /* Fill in the memory map table */
859 {
860 u8 value;
861 u8 last = 0;
862 u8 row = 0;
863 for (index = 0; index < 8; index += 2) {
864
865 pci_read_config_byte(mci->pdev, E752X_DRB + index,
866 &value);
867 /* test if there is a dimm in this slot */
868 if (value == last) {
869 /* no dimm in the slot, so flag it as empty */
870 pvt->map[index] = 0xff;
871 pvt->map[index + 1] = 0xff;
872 } else { /* there is a dimm in the slot */
873 pvt->map[index] = row;
874 row++;
875 last = value;
876 /* test the next value to see if the dimm is
877 double sided */
878 pci_read_config_byte(mci->pdev,
879 E752X_DRB + index + 1,
880 &value);
881 pvt->map[index + 1] = (value == last) ?
882 0xff : /* the dimm is single sided,
883 so flag as empty */
884 row; /* this is a double sided dimm
885 to save the next row # */
886 row++;
887 last = value;
888 }
889 }
890 }
891
892 /* set the map type. 1 = normal, 0 = reversed */
893 pci_read_config_byte(mci->pdev, E752X_DRM, &stat8);
894 pvt->map_type = ((stat8 & 0x0f) > ((stat8 >> 4) & 0x0f));
895
896 mci->edac_cap |= EDAC_FLAG_NONE;
897
898 debugf3("MC: " __FILE__ ": %s(): tolm, remapbase, remaplimit\n",
899 __func__);
900 /* load the top of low memory, remap base, and remap limit vars */
901 pci_read_config_word(mci->pdev, E752X_TOLM, &pci_data);
902 pvt->tolm = ((u32) pci_data) << 4;
903 pci_read_config_word(mci->pdev, E752X_REMAPBASE, &pci_data);
904 pvt->remapbase = ((u32) pci_data) << 14;
905 pci_read_config_word(mci->pdev, E752X_REMAPLIMIT, &pci_data);
906 pvt->remaplimit = ((u32) pci_data) << 14;
907 printk("tolm = %x, remapbase = %x, remaplimit = %x\n", pvt->tolm,
908 pvt->remapbase, pvt->remaplimit);
909
910 if (edac_mc_add_mc(mci)) {
911 debugf3("MC: " __FILE__
912 ": %s(): failed edac_mc_add_mc()\n",
913 __func__);
914 goto fail;
915 }
916
917 /* Walk through the PCI table and clear errors */
918 switch (dev_idx) {
919 case E7520:
920 dev = pci_get_device(PCI_VENDOR_ID_INTEL,
921 PCI_DEVICE_ID_INTEL_7520_0, NULL);
922 break;
923 case E7525:
924 dev = pci_get_device(PCI_VENDOR_ID_INTEL,
925 PCI_DEVICE_ID_INTEL_7525_0, NULL);
926 break;
927 case E7320:
928 dev = pci_get_device(PCI_VENDOR_ID_INTEL,
929 PCI_DEVICE_ID_INTEL_7320_0, NULL);
930 break;
931 }
932
933
934 pvt->dev_d0f0 = dev;
935 for (pres_dev = dev;
936 ((struct pci_dev *) pres_dev->global_list.next != dev);
937 pres_dev = (struct pci_dev *) pres_dev->global_list.next) {
938 pci_read_config_dword(pres_dev, PCI_COMMAND, &stat32);
939 stat = (u16) (stat32 >> 16);
940 /* clear any error bits */
941 if (stat32 & ((1 << 6) + (1 << 8)))
942 pci_write_config_word(pres_dev, PCI_STATUS, stat);
943 }
944 /* find the error reporting device and clear errors */
945 dev = pvt->dev_d0f1 = pci_dev_get(pvt->bridge_ck);
946 /* Turn off error disable & SMI in case the BIOS turned it on */
947 pci_write_config_byte(dev, E752X_HI_ERRMASK, 0x00);
948 pci_write_config_byte(dev, E752X_HI_SMICMD, 0x00);
949 pci_write_config_word(dev, E752X_SYSBUS_ERRMASK, 0x00);
950 pci_write_config_word(dev, E752X_SYSBUS_SMICMD, 0x00);
951 pci_write_config_byte(dev, E752X_BUF_ERRMASK, 0x00);
952 pci_write_config_byte(dev, E752X_BUF_SMICMD, 0x00);
953 pci_write_config_byte(dev, E752X_DRAM_ERRMASK, 0x00);
954 pci_write_config_byte(dev, E752X_DRAM_SMICMD, 0x00);
955 /* clear other MCH errors */
956 pci_read_config_dword(dev, E752X_FERR_GLOBAL, &stat32);
957 pci_write_config_dword(dev, E752X_FERR_GLOBAL, stat32);
958 pci_read_config_dword(dev, E752X_NERR_GLOBAL, &stat32);
959 pci_write_config_dword(dev, E752X_NERR_GLOBAL, stat32);
960 pci_read_config_byte(dev, E752X_HI_FERR, &stat8);
961 pci_write_config_byte(dev, E752X_HI_FERR, stat8);
962 pci_read_config_byte(dev, E752X_HI_NERR, &stat8);
963 pci_write_config_byte(dev, E752X_HI_NERR, stat8);
964 pci_read_config_dword(dev, E752X_SYSBUS_FERR, &stat32);
965 pci_write_config_dword(dev, E752X_SYSBUS_FERR, stat32);
966 pci_read_config_byte(dev, E752X_BUF_FERR, &stat8);
967 pci_write_config_byte(dev, E752X_BUF_FERR, stat8);
968 pci_read_config_byte(dev, E752X_BUF_NERR, &stat8);
969 pci_write_config_byte(dev, E752X_BUF_NERR, stat8);
970 pci_read_config_word(dev, E752X_DRAM_FERR, &stat16);
971 pci_write_config_word(dev, E752X_DRAM_FERR, stat16);
972 pci_read_config_word(dev, E752X_DRAM_NERR, &stat16);
973 pci_write_config_word(dev, E752X_DRAM_NERR, stat16);
974
975 /* get this far and it's successful */
976 debugf3("MC: " __FILE__ ": %s(): success\n", __func__);
977 return 0;
978
979fail:
980 if (mci) {
981 if (pvt->dev_d0f0)
982 pci_dev_put(pvt->dev_d0f0);
983 if (pvt->dev_d0f1)
984 pci_dev_put(pvt->dev_d0f1);
985 if (pvt->bridge_ck)
986 pci_dev_put(pvt->bridge_ck);
987 edac_mc_free(mci);
988 }
989 return rc;
990}
991
992/* returns count (>= 0), or negative on error */
993static int __devinit e752x_init_one(struct pci_dev *pdev,
994 const struct pci_device_id *ent)
995{
996 debugf0("MC: " __FILE__ ": %s()\n", __func__);
997
998 /* wake up and enable device */
999 if(pci_enable_device(pdev) < 0)
1000 return -EIO;
1001 return e752x_probe1(pdev, ent->driver_data);
1002}
1003
1004
1005static void __devexit e752x_remove_one(struct pci_dev *pdev)
1006{
1007 struct mem_ctl_info *mci;
1008 struct e752x_pvt *pvt;
1009
1010 debugf0(__FILE__ ": %s()\n", __func__);
1011
1012 if ((mci = edac_mc_find_mci_by_pdev(pdev)) == NULL)
1013 return;
1014
1015 if (edac_mc_del_mc(mci))
1016 return;
1017
1018 pvt = (struct e752x_pvt *) mci->pvt_info;
1019 pci_dev_put(pvt->dev_d0f0);
1020 pci_dev_put(pvt->dev_d0f1);
1021 pci_dev_put(pvt->bridge_ck);
1022 edac_mc_free(mci);
1023}
1024
1025
1026static const struct pci_device_id e752x_pci_tbl[] __devinitdata = {
1027 {PCI_VEND_DEV(INTEL, 7520_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1028 E7520},
1029 {PCI_VEND_DEV(INTEL, 7525_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1030 E7525},
1031 {PCI_VEND_DEV(INTEL, 7320_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1032 E7320},
1033 {0,} /* 0 terminated list. */
1034};
1035
1036MODULE_DEVICE_TABLE(pci, e752x_pci_tbl);
1037
1038
1039static struct pci_driver e752x_driver = {
1040 name: BS_MOD_STR,
1041 probe: e752x_init_one,
1042 remove: __devexit_p(e752x_remove_one),
1043 id_table: e752x_pci_tbl,
1044};
1045
1046
1047int __init e752x_init(void)
1048{
1049 int pci_rc;
1050
1051 debugf3("MC: " __FILE__ ": %s()\n", __func__);
1052 pci_rc = pci_register_driver(&e752x_driver);
1053 return (pci_rc < 0) ? pci_rc : 0;
1054}
1055
1056
1057static void __exit e752x_exit(void)
1058{
1059 debugf3("MC: " __FILE__ ": %s()\n", __func__);
1060 pci_unregister_driver(&e752x_driver);
1061}
1062
1063
1064module_init(e752x_init);
1065module_exit(e752x_exit);
1066
1067MODULE_LICENSE("GPL");
1068MODULE_AUTHOR("Linux Networx (http://lnxi.com) Tom Zimmerman\n");
1069MODULE_DESCRIPTION("MC support for Intel e752x memory controllers");
diff --git a/drivers/edac/e7xxx_edac.c b/drivers/edac/e7xxx_edac.c
new file mode 100644
index 000000000000..066be43f5ece
--- /dev/null
+++ b/drivers/edac/e7xxx_edac.c
@@ -0,0 +1,558 @@
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 * Contributors:
14 * Eric Biederman (Linux Networx)
15 * Tom Zimmerman (Linux Networx)
16 * Jim Garlick (Lawrence Livermore National Labs)
17 * Dave Peterson (Lawrence Livermore National Labs)
18 * That One Guy (Some other place)
19 * Wang Zhenyu (intel.com)
20 *
21 * $Id: edac_e7xxx.c,v 1.5.2.9 2005/10/05 00:43:44 dsp_llnl Exp $
22 *
23 */
24
25
26#include <linux/config.h>
27#include <linux/module.h>
28#include <linux/init.h>
29#include <linux/pci.h>
30#include <linux/pci_ids.h>
31#include <linux/slab.h>
32#include "edac_mc.h"
33
34
35#ifndef PCI_DEVICE_ID_INTEL_7205_0
36#define PCI_DEVICE_ID_INTEL_7205_0 0x255d
37#endif /* PCI_DEVICE_ID_INTEL_7205_0 */
38
39#ifndef PCI_DEVICE_ID_INTEL_7205_1_ERR
40#define PCI_DEVICE_ID_INTEL_7205_1_ERR 0x2551
41#endif /* PCI_DEVICE_ID_INTEL_7205_1_ERR */
42
43#ifndef PCI_DEVICE_ID_INTEL_7500_0
44#define PCI_DEVICE_ID_INTEL_7500_0 0x2540
45#endif /* PCI_DEVICE_ID_INTEL_7500_0 */
46
47#ifndef PCI_DEVICE_ID_INTEL_7500_1_ERR
48#define PCI_DEVICE_ID_INTEL_7500_1_ERR 0x2541
49#endif /* PCI_DEVICE_ID_INTEL_7500_1_ERR */
50
51#ifndef PCI_DEVICE_ID_INTEL_7501_0
52#define PCI_DEVICE_ID_INTEL_7501_0 0x254c
53#endif /* PCI_DEVICE_ID_INTEL_7501_0 */
54
55#ifndef PCI_DEVICE_ID_INTEL_7501_1_ERR
56#define PCI_DEVICE_ID_INTEL_7501_1_ERR 0x2541
57#endif /* PCI_DEVICE_ID_INTEL_7501_1_ERR */
58
59#ifndef PCI_DEVICE_ID_INTEL_7505_0
60#define PCI_DEVICE_ID_INTEL_7505_0 0x2550
61#endif /* PCI_DEVICE_ID_INTEL_7505_0 */
62
63#ifndef PCI_DEVICE_ID_INTEL_7505_1_ERR
64#define PCI_DEVICE_ID_INTEL_7505_1_ERR 0x2551
65#endif /* PCI_DEVICE_ID_INTEL_7505_1_ERR */
66
67
68#define E7XXX_NR_CSROWS 8 /* number of csrows */
69#define E7XXX_NR_DIMMS 8 /* FIXME - is this correct? */
70
71
72/* E7XXX register addresses - device 0 function 0 */
73#define E7XXX_DRB 0x60 /* DRAM row boundary register (8b) */
74#define E7XXX_DRA 0x70 /* DRAM row attribute register (8b) */
75 /*
76 * 31 Device width row 7 0=x8 1=x4
77 * 27 Device width row 6
78 * 23 Device width row 5
79 * 19 Device width row 4
80 * 15 Device width row 3
81 * 11 Device width row 2
82 * 7 Device width row 1
83 * 3 Device width row 0
84 */
85#define E7XXX_DRC 0x7C /* DRAM controller mode reg (32b) */
86 /*
87 * 22 Number channels 0=1,1=2
88 * 19:18 DRB Granularity 32/64MB
89 */
90#define E7XXX_TOLM 0xC4 /* DRAM top of low memory reg (16b) */
91#define E7XXX_REMAPBASE 0xC6 /* DRAM remap base address reg (16b) */
92#define E7XXX_REMAPLIMIT 0xC8 /* DRAM remap limit address reg (16b) */
93
94/* E7XXX register addresses - device 0 function 1 */
95#define E7XXX_DRAM_FERR 0x80 /* DRAM first error register (8b) */
96#define E7XXX_DRAM_NERR 0x82 /* DRAM next error register (8b) */
97#define E7XXX_DRAM_CELOG_ADD 0xA0 /* DRAM first correctable memory */
98 /* error address register (32b) */
99 /*
100 * 31:28 Reserved
101 * 27:6 CE address (4k block 33:12)
102 * 5:0 Reserved
103 */
104#define E7XXX_DRAM_UELOG_ADD 0xB0 /* DRAM first uncorrectable memory */
105 /* error address register (32b) */
106 /*
107 * 31:28 Reserved
108 * 27:6 CE address (4k block 33:12)
109 * 5:0 Reserved
110 */
111#define E7XXX_DRAM_CELOG_SYNDROME 0xD0 /* DRAM first correctable memory */
112 /* error syndrome register (16b) */
113
114enum e7xxx_chips {
115 E7500 = 0,
116 E7501,
117 E7505,
118 E7205,
119};
120
121
122struct e7xxx_pvt {
123 struct pci_dev *bridge_ck;
124 u32 tolm;
125 u32 remapbase;
126 u32 remaplimit;
127 const struct e7xxx_dev_info *dev_info;
128};
129
130
131struct e7xxx_dev_info {
132 u16 err_dev;
133 const char *ctl_name;
134};
135
136
137struct e7xxx_error_info {
138 u8 dram_ferr;
139 u8 dram_nerr;
140 u32 dram_celog_add;
141 u16 dram_celog_syndrome;
142 u32 dram_uelog_add;
143};
144
145static const struct e7xxx_dev_info e7xxx_devs[] = {
146 [E7500] = {
147 .err_dev = PCI_DEVICE_ID_INTEL_7500_1_ERR,
148 .ctl_name = "E7500"},
149 [E7501] = {
150 .err_dev = PCI_DEVICE_ID_INTEL_7501_1_ERR,
151 .ctl_name = "E7501"},
152 [E7505] = {
153 .err_dev = PCI_DEVICE_ID_INTEL_7505_1_ERR,
154 .ctl_name = "E7505"},
155 [E7205] = {
156 .err_dev = PCI_DEVICE_ID_INTEL_7205_1_ERR,
157 .ctl_name = "E7205"},
158};
159
160
161/* FIXME - is this valid for both SECDED and S4ECD4ED? */
162static inline int e7xxx_find_channel(u16 syndrome)
163{
164 debugf3("MC: " __FILE__ ": %s()\n", __func__);
165
166 if ((syndrome & 0xff00) == 0)
167 return 0;
168 if ((syndrome & 0x00ff) == 0)
169 return 1;
170 if ((syndrome & 0xf000) == 0 || (syndrome & 0x0f00) == 0)
171 return 0;
172 return 1;
173}
174
175
176static unsigned long
177ctl_page_to_phys(struct mem_ctl_info *mci, unsigned long page)
178{
179 u32 remap;
180 struct e7xxx_pvt *pvt = (struct e7xxx_pvt *) mci->pvt_info;
181
182 debugf3("MC: " __FILE__ ": %s()\n", __func__);
183
184 if ((page < pvt->tolm) ||
185 ((page >= 0x100000) && (page < pvt->remapbase)))
186 return page;
187 remap = (page - pvt->tolm) + pvt->remapbase;
188 if (remap < pvt->remaplimit)
189 return remap;
190 printk(KERN_ERR "Invalid page %lx - out of range\n", page);
191 return pvt->tolm - 1;
192}
193
194
195static void process_ce(struct mem_ctl_info *mci, struct e7xxx_error_info *info)
196{
197 u32 error_1b, page;
198 u16 syndrome;
199 int row;
200 int channel;
201
202 debugf3("MC: " __FILE__ ": %s()\n", __func__);
203
204 /* read the error address */
205 error_1b = info->dram_celog_add;
206 /* FIXME - should use PAGE_SHIFT */
207 page = error_1b >> 6; /* convert the address to 4k page */
208 /* read the syndrome */
209 syndrome = info->dram_celog_syndrome;
210 /* FIXME - check for -1 */
211 row = edac_mc_find_csrow_by_page(mci, page);
212 /* convert syndrome to channel */
213 channel = e7xxx_find_channel(syndrome);
214 edac_mc_handle_ce(mci, page, 0, syndrome, row, channel,
215 "e7xxx CE");
216}
217
218
219static void process_ce_no_info(struct mem_ctl_info *mci)
220{
221 debugf3("MC: " __FILE__ ": %s()\n", __func__);
222 edac_mc_handle_ce_no_info(mci, "e7xxx CE log register overflow");
223}
224
225
226static void process_ue(struct mem_ctl_info *mci, struct e7xxx_error_info *info)
227{
228 u32 error_2b, block_page;
229 int row;
230
231 debugf3("MC: " __FILE__ ": %s()\n", __func__);
232
233 /* read the error address */
234 error_2b = info->dram_uelog_add;
235 /* FIXME - should use PAGE_SHIFT */
236 block_page = error_2b >> 6; /* convert to 4k address */
237 row = edac_mc_find_csrow_by_page(mci, block_page);
238 edac_mc_handle_ue(mci, block_page, 0, row, "e7xxx UE");
239}
240
241
242static void process_ue_no_info(struct mem_ctl_info *mci)
243{
244 debugf3("MC: " __FILE__ ": %s()\n", __func__);
245 edac_mc_handle_ue_no_info(mci, "e7xxx UE log register overflow");
246}
247
248
249static void e7xxx_get_error_info (struct mem_ctl_info *mci,
250 struct e7xxx_error_info *info)
251{
252 struct e7xxx_pvt *pvt;
253
254 pvt = (struct e7xxx_pvt *) mci->pvt_info;
255 pci_read_config_byte(pvt->bridge_ck, E7XXX_DRAM_FERR,
256 &info->dram_ferr);
257 pci_read_config_byte(pvt->bridge_ck, E7XXX_DRAM_NERR,
258 &info->dram_nerr);
259
260 if ((info->dram_ferr & 1) || (info->dram_nerr & 1)) {
261 pci_read_config_dword(pvt->bridge_ck, E7XXX_DRAM_CELOG_ADD,
262 &info->dram_celog_add);
263 pci_read_config_word(pvt->bridge_ck,
264 E7XXX_DRAM_CELOG_SYNDROME, &info->dram_celog_syndrome);
265 }
266
267 if ((info->dram_ferr & 2) || (info->dram_nerr & 2))
268 pci_read_config_dword(pvt->bridge_ck, E7XXX_DRAM_UELOG_ADD,
269 &info->dram_uelog_add);
270
271 if (info->dram_ferr & 3)
272 pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_FERR, 0x03,
273 0x03);
274
275 if (info->dram_nerr & 3)
276 pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_NERR, 0x03,
277 0x03);
278}
279
280
281static int e7xxx_process_error_info (struct mem_ctl_info *mci,
282 struct e7xxx_error_info *info, int handle_errors)
283{
284 int error_found;
285
286 error_found = 0;
287
288 /* decode and report errors */
289 if (info->dram_ferr & 1) { /* check first error correctable */
290 error_found = 1;
291
292 if (handle_errors)
293 process_ce(mci, info);
294 }
295
296 if (info->dram_ferr & 2) { /* check first error uncorrectable */
297 error_found = 1;
298
299 if (handle_errors)
300 process_ue(mci, info);
301 }
302
303 if (info->dram_nerr & 1) { /* check next error correctable */
304 error_found = 1;
305
306 if (handle_errors) {
307 if (info->dram_ferr & 1)
308 process_ce_no_info(mci);
309 else
310 process_ce(mci, info);
311 }
312 }
313
314 if (info->dram_nerr & 2) { /* check next error uncorrectable */
315 error_found = 1;
316
317 if (handle_errors) {
318 if (info->dram_ferr & 2)
319 process_ue_no_info(mci);
320 else
321 process_ue(mci, info);
322 }
323 }
324
325 return error_found;
326}
327
328
329static void e7xxx_check(struct mem_ctl_info *mci)
330{
331 struct e7xxx_error_info info;
332
333 debugf3("MC: " __FILE__ ": %s()\n", __func__);
334 e7xxx_get_error_info(mci, &info);
335 e7xxx_process_error_info(mci, &info, 1);
336}
337
338
339static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx)
340{
341 int rc = -ENODEV;
342 int index;
343 u16 pci_data;
344 struct mem_ctl_info *mci = NULL;
345 struct e7xxx_pvt *pvt = NULL;
346 u32 drc;
347 int drc_chan = 1; /* Number of channels 0=1chan,1=2chan */
348 int drc_drbg = 1; /* DRB granularity 0=32mb,1=64mb */
349 int drc_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */
350 u32 dra;
351 unsigned long last_cumul_size;
352
353
354 debugf0("MC: " __FILE__ ": %s(): mci\n", __func__);
355
356 /* need to find out the number of channels */
357 pci_read_config_dword(pdev, E7XXX_DRC, &drc);
358 /* only e7501 can be single channel */
359 if (dev_idx == E7501) {
360 drc_chan = ((drc >> 22) & 0x1);
361 drc_drbg = (drc >> 18) & 0x3;
362 }
363 drc_ddim = (drc >> 20) & 0x3;
364
365 mci = edac_mc_alloc(sizeof(*pvt), E7XXX_NR_CSROWS, drc_chan + 1);
366
367 if (mci == NULL) {
368 rc = -ENOMEM;
369 goto fail;
370 }
371
372 debugf3("MC: " __FILE__ ": %s(): init mci\n", __func__);
373
374 mci->mtype_cap = MEM_FLAG_RDDR;
375 mci->edac_ctl_cap =
376 EDAC_FLAG_NONE | EDAC_FLAG_SECDED | EDAC_FLAG_S4ECD4ED;
377 /* FIXME - what if different memory types are in different csrows? */
378 mci->mod_name = BS_MOD_STR;
379 mci->mod_ver = "$Revision: 1.5.2.9 $";
380 mci->pdev = pdev;
381
382 debugf3("MC: " __FILE__ ": %s(): init pvt\n", __func__);
383 pvt = (struct e7xxx_pvt *) mci->pvt_info;
384 pvt->dev_info = &e7xxx_devs[dev_idx];
385 pvt->bridge_ck = pci_get_device(PCI_VENDOR_ID_INTEL,
386 pvt->dev_info->err_dev,
387 pvt->bridge_ck);
388 if (!pvt->bridge_ck) {
389 printk(KERN_ERR
390 "MC: error reporting device not found:"
391 "vendor %x device 0x%x (broken BIOS?)\n",
392 PCI_VENDOR_ID_INTEL, e7xxx_devs[dev_idx].err_dev);
393 goto fail;
394 }
395
396 debugf3("MC: " __FILE__ ": %s(): more mci init\n", __func__);
397 mci->ctl_name = pvt->dev_info->ctl_name;
398
399 mci->edac_check = e7xxx_check;
400 mci->ctl_page_to_phys = ctl_page_to_phys;
401
402 /* find out the device types */
403 pci_read_config_dword(pdev, E7XXX_DRA, &dra);
404
405 /*
406 * The dram row boundary (DRB) reg values are boundary address
407 * for each DRAM row with a granularity of 32 or 64MB (single/dual
408 * channel operation). DRB regs are cumulative; therefore DRB7 will
409 * contain the total memory contained in all eight rows.
410 */
411 for (last_cumul_size = index = 0; index < mci->nr_csrows; index++) {
412 u8 value;
413 u32 cumul_size;
414 /* mem_dev 0=x8, 1=x4 */
415 int mem_dev = (dra >> (index * 4 + 3)) & 0x1;
416 struct csrow_info *csrow = &mci->csrows[index];
417
418 pci_read_config_byte(mci->pdev, E7XXX_DRB + index, &value);
419 /* convert a 64 or 32 MiB DRB to a page size. */
420 cumul_size = value << (25 + drc_drbg - PAGE_SHIFT);
421 debugf3("MC: " __FILE__ ": %s(): (%d) cumul_size 0x%x\n",
422 __func__, index, cumul_size);
423 if (cumul_size == last_cumul_size)
424 continue; /* not populated */
425
426 csrow->first_page = last_cumul_size;
427 csrow->last_page = cumul_size - 1;
428 csrow->nr_pages = cumul_size - last_cumul_size;
429 last_cumul_size = cumul_size;
430 csrow->grain = 1 << 12; /* 4KiB - resolution of CELOG */
431 csrow->mtype = MEM_RDDR; /* only one type supported */
432 csrow->dtype = mem_dev ? DEV_X4 : DEV_X8;
433
434 /*
435 * if single channel or x8 devices then SECDED
436 * if dual channel and x4 then S4ECD4ED
437 */
438 if (drc_ddim) {
439 if (drc_chan && mem_dev) {
440 csrow->edac_mode = EDAC_S4ECD4ED;
441 mci->edac_cap |= EDAC_FLAG_S4ECD4ED;
442 } else {
443 csrow->edac_mode = EDAC_SECDED;
444 mci->edac_cap |= EDAC_FLAG_SECDED;
445 }
446 } else
447 csrow->edac_mode = EDAC_NONE;
448 }
449
450 mci->edac_cap |= EDAC_FLAG_NONE;
451
452 debugf3("MC: " __FILE__ ": %s(): tolm, remapbase, remaplimit\n",
453 __func__);
454 /* load the top of low memory, remap base, and remap limit vars */
455 pci_read_config_word(mci->pdev, E7XXX_TOLM, &pci_data);
456 pvt->tolm = ((u32) pci_data) << 4;
457 pci_read_config_word(mci->pdev, E7XXX_REMAPBASE, &pci_data);
458 pvt->remapbase = ((u32) pci_data) << 14;
459 pci_read_config_word(mci->pdev, E7XXX_REMAPLIMIT, &pci_data);
460 pvt->remaplimit = ((u32) pci_data) << 14;
461 printk("tolm = %x, remapbase = %x, remaplimit = %x\n", pvt->tolm,
462 pvt->remapbase, pvt->remaplimit);
463
464 /* clear any pending errors, or initial state bits */
465 pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_FERR, 0x03, 0x03);
466 pci_write_bits8(pvt->bridge_ck, E7XXX_DRAM_NERR, 0x03, 0x03);
467
468 if (edac_mc_add_mc(mci) != 0) {
469 debugf3("MC: " __FILE__
470 ": %s(): failed edac_mc_add_mc()\n",
471 __func__);
472 goto fail;
473 }
474
475 /* get this far and it's successful */
476 debugf3("MC: " __FILE__ ": %s(): success\n", __func__);
477 return 0;
478
479fail:
480 if (mci != NULL) {
481 if(pvt != NULL && pvt->bridge_ck)
482 pci_dev_put(pvt->bridge_ck);
483 edac_mc_free(mci);
484 }
485
486 return rc;
487}
488
489/* returns count (>= 0), or negative on error */
490static int __devinit
491e7xxx_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
492{
493 debugf0("MC: " __FILE__ ": %s()\n", __func__);
494
495 /* wake up and enable device */
496 return pci_enable_device(pdev) ?
497 -EIO : e7xxx_probe1(pdev, ent->driver_data);
498}
499
500
501static void __devexit e7xxx_remove_one(struct pci_dev *pdev)
502{
503 struct mem_ctl_info *mci;
504 struct e7xxx_pvt *pvt;
505
506 debugf0(__FILE__ ": %s()\n", __func__);
507
508 if (((mci = edac_mc_find_mci_by_pdev(pdev)) != 0) &&
509 edac_mc_del_mc(mci)) {
510 pvt = (struct e7xxx_pvt *) mci->pvt_info;
511 pci_dev_put(pvt->bridge_ck);
512 edac_mc_free(mci);
513 }
514}
515
516
517static const struct pci_device_id e7xxx_pci_tbl[] __devinitdata = {
518 {PCI_VEND_DEV(INTEL, 7205_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
519 E7205},
520 {PCI_VEND_DEV(INTEL, 7500_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
521 E7500},
522 {PCI_VEND_DEV(INTEL, 7501_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
523 E7501},
524 {PCI_VEND_DEV(INTEL, 7505_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
525 E7505},
526 {0,} /* 0 terminated list. */
527};
528
529MODULE_DEVICE_TABLE(pci, e7xxx_pci_tbl);
530
531
532static struct pci_driver e7xxx_driver = {
533 .name = BS_MOD_STR,
534 .probe = e7xxx_init_one,
535 .remove = __devexit_p(e7xxx_remove_one),
536 .id_table = e7xxx_pci_tbl,
537};
538
539
540int __init e7xxx_init(void)
541{
542 return pci_register_driver(&e7xxx_driver);
543}
544
545
546static void __exit e7xxx_exit(void)
547{
548 pci_unregister_driver(&e7xxx_driver);
549}
550
551module_init(e7xxx_init);
552module_exit(e7xxx_exit);
553
554
555MODULE_LICENSE("GPL");
556MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh et al\n"
557 "Based on.work by Dan Hollis et al");
558MODULE_DESCRIPTION("MC support for Intel e7xxx memory controllers");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-15 16:45:43 -0500