*
* Written with reference to 82600 High Integration Dual PCI System
* Controller Data Book:
- * http://www.radisys.com/files/support_downloads/007-01277-0002.82600DataBook.pdf
+ * www.radisys.com/files/support_downloads/007-01277-0002.82600DataBook.pdf
* references to this document given in []
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
-
#include <linux/pci.h>
#include <linux/pci_ids.h>
-
#include <linux/slab.h>
+#include "edac_core.h"
+
+#define R82600_REVISION " Ver: 2.0.2 " __DATE__
+#define EDAC_MOD_STR "r82600_edac"
-#include "edac_mc.h"
+#define r82600_printk(level, fmt, arg...) \
+ edac_printk(level, "r82600", fmt, ##arg)
+
+#define r82600_mc_printk(mci, level, fmt, arg...) \
+ edac_mc_chipset_printk(mci, level, "r82600", fmt, ##arg)
/* Radisys say "The 82600 integrates a main memory SDRAM controller that
* supports up to four banks of memory. The four banks can support a mix of
u32 eapr;
};
+static unsigned int disable_hardware_scrub;
-static unsigned int disable_hardware_scrub = 0;
-
+static struct edac_pci_ctl_info *r82600_pci;
-static void r82600_get_error_info (struct mem_ctl_info *mci,
- struct r82600_error_info *info)
+static void r82600_get_error_info(struct mem_ctl_info *mci,
+ struct r82600_error_info *info)
{
- pci_read_config_dword(mci->pdev, R82600_EAP, &info->eapr);
+ struct pci_dev *pdev;
+
+ pdev = to_pci_dev(mci->dev);
+ pci_read_config_dword(pdev, R82600_EAP, &info->eapr);
if (info->eapr & BIT(0))
/* Clear error to allow next error to be reported [p.62] */
- pci_write_bits32(mci->pdev, R82600_EAP,
- ((u32) BIT(0) & (u32) BIT(1)),
- ((u32) BIT(0) & (u32) BIT(1)));
+ pci_write_bits32(pdev, R82600_EAP,
+ ((u32) BIT(0) & (u32) BIT(1)),
+ ((u32) BIT(0) & (u32) BIT(1)));
if (info->eapr & BIT(1))
/* Clear error to allow next error to be reported [p.62] */
- pci_write_bits32(mci->pdev, R82600_EAP,
- ((u32) BIT(0) & (u32) BIT(1)),
- ((u32) BIT(0) & (u32) BIT(1)));
+ pci_write_bits32(pdev, R82600_EAP,
+ ((u32) BIT(0) & (u32) BIT(1)),
+ ((u32) BIT(0) & (u32) BIT(1)));
}
-
-static int r82600_process_error_info (struct mem_ctl_info *mci,
- struct r82600_error_info *info, int handle_errors)
+static int r82600_process_error_info(struct mem_ctl_info *mci,
+ struct r82600_error_info *info,
+ int handle_errors)
{
int error_found;
u32 eapaddr, page;
* granularity (upper 19 bits only) */
page = eapaddr >> PAGE_SHIFT;
- if (info->eapr & BIT(0)) { /* CE? */
+ if (info->eapr & BIT(0)) { /* CE? */
error_found = 1;
if (handle_errors)
- edac_mc_handle_ce(
- mci, page, 0, /* not avail */
- syndrome,
- edac_mc_find_csrow_by_page(mci, page),
- 0, /* channel */
- mci->ctl_name);
+ edac_mc_handle_ce(mci, page, 0, /* not avail */
+ syndrome,
+ edac_mc_find_csrow_by_page(mci, page),
+ 0, mci->ctl_name);
}
- if (info->eapr & BIT(1)) { /* UE? */
+ if (info->eapr & BIT(1)) { /* UE? */
error_found = 1;
if (handle_errors)
/* 82600 doesn't give enough info */
edac_mc_handle_ue(mci, page, 0,
- edac_mc_find_csrow_by_page(mci, page),
- mci->ctl_name);
+ edac_mc_find_csrow_by_page(mci, page),
+ mci->ctl_name);
}
return error_found;
{
struct r82600_error_info info;
- debugf1("MC%d: " __FILE__ ": %s()\n", mci->mc_idx, __func__);
+ debugf1("MC%d: %s()\n", mci->mc_idx, __func__);
r82600_get_error_info(mci, &info);
r82600_process_error_info(mci, &info, 1);
}
-static int r82600_probe1(struct pci_dev *pdev, int dev_idx)
+static inline int ecc_enabled(u8 dramcr)
{
- int rc = -ENODEV;
- int index;
- struct mem_ctl_info *mci = NULL;
- u8 dramcr;
- u32 ecc_on;
- u32 reg_sdram;
- u32 eapr;
- u32 scrub_disabled;
- u32 sdram_refresh_rate;
- u32 row_high_limit_last = 0;
- u32 eap_init_bits;
-
- debugf0("MC: " __FILE__ ": %s()\n", __func__);
-
+ return dramcr & BIT(5);
+}
- pci_read_config_byte(pdev, R82600_DRAMC, &dramcr);
- pci_read_config_dword(pdev, R82600_EAP, &eapr);
+static void r82600_init_csrows(struct mem_ctl_info *mci, struct pci_dev *pdev,
+ u8 dramcr)
+{
+ struct csrow_info *csrow;
+ int index;
+ u8 drbar; /* SDRAM Row Boundry Address Register */
+ u32 row_high_limit, row_high_limit_last;
+ u32 reg_sdram, ecc_on, row_base;
- ecc_on = dramcr & BIT(5);
+ ecc_on = ecc_enabled(dramcr);
reg_sdram = dramcr & BIT(4);
- scrub_disabled = eapr & BIT(31);
- sdram_refresh_rate = dramcr & (BIT(0) | BIT(1));
-
- debugf2("MC: " __FILE__ ": %s(): sdram refresh rate = %#0x\n",
- __func__, sdram_refresh_rate);
-
- debugf2("MC: " __FILE__ ": %s(): DRAMC register = %#0x\n", __func__,
- dramcr);
-
- mci = edac_mc_alloc(0, R82600_NR_CSROWS, R82600_NR_CHANS);
-
- if (mci == NULL) {
- rc = -ENOMEM;
- goto fail;
- }
-
- debugf0("MC: " __FILE__ ": %s(): mci = %p\n", __func__, mci);
-
- mci->pdev = pdev;
- mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_DDR;
-
- mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED;
- /* FIXME try to work out if the chip leads have been *
- * used for COM2 instead on this board? [MA6?] MAYBE: */
-
- /* On the R82600, the pins for memory bits 72:65 - i.e. the *
- * EC bits are shared with the pins for COM2 (!), so if COM2 *
- * is enabled, we assume COM2 is wired up, and thus no EDAC *
- * is possible. */
- mci->edac_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED;
- if (ecc_on) {
- if (scrub_disabled)
- debugf3("MC: " __FILE__ ": %s(): mci = %p - "
- "Scrubbing disabled! EAP: %#0x\n", __func__,
- mci, eapr);
- } else
- mci->edac_cap = EDAC_FLAG_NONE;
-
- mci->mod_name = BS_MOD_STR;
- mci->mod_ver = "$Revision: 1.1.2.6 $";
- mci->ctl_name = "R82600";
- mci->edac_check = r82600_check;
- mci->ctl_page_to_phys = NULL;
+ row_high_limit_last = 0;
for (index = 0; index < mci->nr_csrows; index++) {
- struct csrow_info *csrow = &mci->csrows[index];
- u8 drbar; /* sDram Row Boundry Address Register */
- u32 row_high_limit;
- u32 row_base;
+ csrow = &mci->csrows[index];
/* find the DRAM Chip Select Base address and mask */
- pci_read_config_byte(mci->pdev, R82600_DRBA + index, &drbar);
+ pci_read_config_byte(pdev, R82600_DRBA + index, &drbar);
- debugf1("MC%d: " __FILE__ ": %s() Row=%d DRBA = %#0x\n",
- mci->mc_idx, __func__, index, drbar);
+ debugf1("%s() Row=%d DRBA = %#0x\n", __func__, index, drbar);
row_high_limit = ((u32) drbar << 24);
/* row_high_limit = ((u32)drbar << 24) | 0xffffffUL; */
- debugf1("MC%d: " __FILE__ ": %s() Row=%d, "
- "Boundry Address=%#0x, Last = %#0x \n",
- mci->mc_idx, __func__, index, row_high_limit,
- row_high_limit_last);
+ debugf1("%s() Row=%d, Boundry Address=%#0x, Last = %#0x\n",
+ __func__, index, row_high_limit, row_high_limit_last);
/* Empty row [p.57] */
if (row_high_limit == row_high_limit_last)
csrow->edac_mode = ecc_on ? EDAC_SECDED : EDAC_NONE;
row_high_limit_last = row_high_limit;
}
+}
+
+static int r82600_probe1(struct pci_dev *pdev, int dev_idx)
+{
+ struct mem_ctl_info *mci;
+ u8 dramcr;
+ u32 eapr;
+ u32 scrub_disabled;
+ u32 sdram_refresh_rate;
+ struct r82600_error_info discard;
+
+ debugf0("%s()\n", __func__);
+ pci_read_config_byte(pdev, R82600_DRAMC, &dramcr);
+ pci_read_config_dword(pdev, R82600_EAP, &eapr);
+ scrub_disabled = eapr & BIT(31);
+ sdram_refresh_rate = dramcr & (BIT(0) | BIT(1));
+ debugf2("%s(): sdram refresh rate = %#0x\n", __func__,
+ sdram_refresh_rate);
+ debugf2("%s(): DRAMC register = %#0x\n", __func__, dramcr);
+ mci = edac_mc_alloc(0, R82600_NR_CSROWS, R82600_NR_CHANS, 0);
+
+ if (mci == NULL)
+ return -ENOMEM;
+
+ debugf0("%s(): mci = %p\n", __func__, mci);
+ mci->dev = &pdev->dev;
+ mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_DDR;
+ mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED;
+ /* FIXME try to work out if the chip leads have been used for COM2
+ * instead on this board? [MA6?] MAYBE:
+ */
+
+ /* On the R82600, the pins for memory bits 72:65 - i.e. the *
+ * EC bits are shared with the pins for COM2 (!), so if COM2 *
+ * is enabled, we assume COM2 is wired up, and thus no EDAC *
+ * is possible. */
+ mci->edac_cap = EDAC_FLAG_NONE | EDAC_FLAG_EC | EDAC_FLAG_SECDED;
- /* clear counters */
- /* FIXME should we? */
+ if (ecc_enabled(dramcr)) {
+ if (scrub_disabled)
+ debugf3("%s(): mci = %p - Scrubbing disabled! EAP: "
+ "%#0x\n", __func__, mci, eapr);
+ } else
+ mci->edac_cap = EDAC_FLAG_NONE;
+ mci->mod_name = EDAC_MOD_STR;
+ mci->mod_ver = R82600_REVISION;
+ mci->ctl_name = "R82600";
+ mci->dev_name = pci_name(pdev);
+ mci->edac_check = r82600_check;
+ mci->ctl_page_to_phys = NULL;
+ r82600_init_csrows(mci, pdev, dramcr);
+ r82600_get_error_info(mci, &discard); /* clear counters */
+
+ /* Here we assume that we will never see multiple instances of this
+ * type of memory controller. The ID is therefore hardcoded to 0.
+ */
if (edac_mc_add_mc(mci)) {
- debugf3("MC: " __FILE__
- ": %s(): failed edac_mc_add_mc()\n", __func__);
+ debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
goto fail;
}
/* get this far and it's successful */
- /* Clear error flags to allow next error to be reported [p.62] */
- /* Test systems seem to always have the UE flag raised on boot */
-
- eap_init_bits = BIT(0) & BIT(1);
if (disable_hardware_scrub) {
- eap_init_bits |= BIT(31);
- debugf3("MC: " __FILE__ ": %s(): Disabling Hardware Scrub "
- "(scrub on error)\n", __func__);
+ debugf3("%s(): Disabling Hardware Scrub (scrub on error)\n",
+ __func__);
+ pci_write_bits32(pdev, R82600_EAP, BIT(31), BIT(31));
}
- pci_write_bits32(mci->pdev, R82600_EAP, eap_init_bits,
- eap_init_bits);
+ /* allocating generic PCI control info */
+ r82600_pci = edac_pci_create_generic_ctl(&pdev->dev, EDAC_MOD_STR);
+ if (!r82600_pci) {
+ printk(KERN_WARNING
+ "%s(): Unable to create PCI control\n",
+ __func__);
+ printk(KERN_WARNING
+ "%s(): PCI error report via EDAC not setup\n",
+ __func__);
+ }
- debugf3("MC: " __FILE__ ": %s(): success\n", __func__);
+ debugf3("%s(): success\n", __func__);
return 0;
fail:
- if (mci)
- edac_mc_free(mci);
-
- return rc;
+ edac_mc_free(mci);
+ return -ENODEV;
}
/* returns count (>= 0), or negative on error */
static int __devinit r82600_init_one(struct pci_dev *pdev,
- const struct pci_device_id *ent)
+ const struct pci_device_id *ent)
{
- debugf0("MC: " __FILE__ ": %s()\n", __func__);
+ debugf0("%s()\n", __func__);
/* don't need to call pci_device_enable() */
return r82600_probe1(pdev, ent->driver_data);
}
-
static void __devexit r82600_remove_one(struct pci_dev *pdev)
{
struct mem_ctl_info *mci;
- debugf0(__FILE__ ": %s()\n", __func__);
+ debugf0("%s()\n", __func__);
- if (((mci = edac_mc_find_mci_by_pdev(pdev)) != NULL) &&
- !edac_mc_del_mc(mci))
- edac_mc_free(mci);
-}
+ if (r82600_pci)
+ edac_pci_release_generic_ctl(r82600_pci);
+
+ if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)
+ return;
+ edac_mc_free(mci);
+}
static const struct pci_device_id r82600_pci_tbl[] __devinitdata = {
- {PCI_DEVICE(PCI_VENDOR_ID_RADISYS, R82600_BRIDGE_ID)},
- {0,} /* 0 terminated list. */
+ {
+ PCI_DEVICE(PCI_VENDOR_ID_RADISYS, R82600_BRIDGE_ID)
+ },
+ {
+ 0,
+ } /* 0 terminated list. */
};
MODULE_DEVICE_TABLE(pci, r82600_pci_tbl);
-
static struct pci_driver r82600_driver = {
- .name = BS_MOD_STR,
+ .name = EDAC_MOD_STR,
.probe = r82600_init_one,
.remove = __devexit_p(r82600_remove_one),
.id_table = r82600_pci_tbl,
};
-
static int __init r82600_init(void)
{
return pci_register_driver(&r82600_driver);
}
-
static void __exit r82600_exit(void)
{
pci_unregister_driver(&r82600_driver);
}
-
module_init(r82600_init);
module_exit(r82600_exit);
-
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Tim Small <tim@buttersideup.com> - WPAD Ltd. "
- "on behalf of EADS Astrium");
+ "on behalf of EADS Astrium");
MODULE_DESCRIPTION("MC support for Radisys 82600 memory controllers");
module_param(disable_hardware_scrub, bool, 0644);
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