diff options
Diffstat (limited to 'drivers/edac/i82860_edac.c')
-rw-r--r-- | drivers/edac/i82860_edac.c | 131 |
1 files changed, 70 insertions, 61 deletions
diff --git a/drivers/edac/i82860_edac.c b/drivers/edac/i82860_edac.c index fd34216..d196dcc 100644 --- a/drivers/edac/i82860_edac.c +++ b/drivers/edac/i82860_edac.c @@ -17,6 +17,8 @@ #include <linux/slab.h> #include "edac_mc.h" +#define I82860_REVISION " Ver: 2.0.0 " __DATE__ + #define i82860_printk(level, fmt, arg...) \ edac_printk(level, "i82860", fmt, ##arg) @@ -63,17 +65,21 @@ static struct pci_dev *mci_pdev = NULL; /* init dev: in case that AGP code static void i82860_get_error_info(struct mem_ctl_info *mci, struct i82860_error_info *info) { + struct pci_dev *pdev; + + pdev = to_pci_dev(mci->dev); + /* * This is a mess because there is no atomic way to read all the * registers at once and the registers can transition from CE being * overwritten by UE. */ - pci_read_config_word(mci->pdev, I82860_ERRSTS, &info->errsts); - pci_read_config_dword(mci->pdev, I82860_EAP, &info->eap); - pci_read_config_word(mci->pdev, I82860_DERRCTL_STS, &info->derrsyn); - pci_read_config_word(mci->pdev, I82860_ERRSTS, &info->errsts2); + pci_read_config_word(pdev, I82860_ERRSTS, &info->errsts); + pci_read_config_dword(pdev, I82860_EAP, &info->eap); + pci_read_config_word(pdev, I82860_DERRCTL_STS, &info->derrsyn); + pci_read_config_word(pdev, I82860_ERRSTS, &info->errsts2); - pci_write_bits16(mci->pdev, I82860_ERRSTS, 0x0003, 0x0003); + pci_write_bits16(pdev, I82860_ERRSTS, 0x0003, 0x0003); /* * If the error is the same for both reads then the first set of reads @@ -84,8 +90,8 @@ static void i82860_get_error_info(struct mem_ctl_info *mci, return; if ((info->errsts ^ info->errsts2) & 0x0003) { - pci_read_config_dword(mci->pdev, I82860_EAP, &info->eap); - pci_read_config_word(mci->pdev, I82860_DERRCTL_STS, + pci_read_config_dword(pdev, I82860_EAP, &info->eap); + pci_read_config_word(pdev, I82860_DERRCTL_STS, &info->derrsyn); } } @@ -127,15 +133,50 @@ static void i82860_check(struct mem_ctl_info *mci) i82860_process_error_info(mci, &info, 1); } -static int i82860_probe1(struct pci_dev *pdev, int dev_idx) +static void i82860_init_csrows(struct mem_ctl_info *mci, struct pci_dev *pdev) { - int rc = -ENODEV; - int index; - struct mem_ctl_info *mci = NULL; unsigned long last_cumul_size; - struct i82860_error_info discard; + u16 mchcfg_ddim; /* DRAM Data Integrity Mode 0=none, 2=edac */ + u16 value; + u32 cumul_size; + struct csrow_info *csrow; + int index; + + pci_read_config_word(pdev, I82860_MCHCFG, &mchcfg_ddim); + mchcfg_ddim = mchcfg_ddim & 0x180; + last_cumul_size = 0; + + /* The group row boundary (GRA) reg values are boundary address + * for each DRAM row with a granularity of 16MB. GRA regs are + * cumulative; therefore GRA15 will contain the total memory contained + * in all eight rows. + */ + for (index = 0; index < mci->nr_csrows; index++) { + csrow = &mci->csrows[index]; + pci_read_config_word(pdev, I82860_GBA + index * 2, &value); + cumul_size = (value & I82860_GBA_MASK) << + (I82860_GBA_SHIFT - PAGE_SHIFT); + debugf3("%s(): (%d) cumul_size 0x%x\n", __func__, index, + cumul_size); - u16 mchcfg_ddim; /* DRAM Data Integrity Mode 0=none,2=edac */ + if (cumul_size == last_cumul_size) + continue; /* not populated */ + + csrow->first_page = last_cumul_size; + csrow->last_page = cumul_size - 1; + csrow->nr_pages = cumul_size - last_cumul_size; + last_cumul_size = cumul_size; + csrow->grain = 1 << 12; /* I82860_EAP has 4KiB reolution */ + csrow->mtype = MEM_RMBS; + csrow->dtype = DEV_UNKNOWN; + csrow->edac_mode = mchcfg_ddim ? EDAC_SECDED : EDAC_NONE; + } +} + +static int i82860_probe1(struct pci_dev *pdev, int dev_idx) +{ + struct mem_ctl_info *mci; + struct i82860_error_info discard; /* RDRAM has channels but these don't map onto the abstractions that edac uses. @@ -151,67 +192,35 @@ static int i82860_probe1(struct pci_dev *pdev, int dev_idx) return -ENOMEM; debugf3("%s(): init mci\n", __func__); - mci->pdev = pdev; + mci->dev = &pdev->dev; mci->mtype_cap = MEM_FLAG_DDR; - mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED; /* I"m not sure about this but I think that all RDRAM is SECDED */ mci->edac_cap = EDAC_FLAG_SECDED; - /* adjust FLAGS */ - mci->mod_name = EDAC_MOD_STR; - mci->mod_ver = "$Revision: 1.1.2.6 $"; + mci->mod_ver = I82860_REVISION; mci->ctl_name = i82860_devs[dev_idx].ctl_name; mci->edac_check = i82860_check; mci->ctl_page_to_phys = NULL; + i82860_init_csrows(mci, pdev); + i82860_get_error_info(mci, &discard); /* clear counters */ - pci_read_config_word(mci->pdev, I82860_MCHCFG, &mchcfg_ddim); - mchcfg_ddim = mchcfg_ddim & 0x180; - - /* - * The group row boundary (GRA) reg values are boundary address - * for each DRAM row with a granularity of 16MB. GRA regs are - * cumulative; therefore GRA15 will contain the total memory contained - * in all eight rows. + /* Here we assume that we will never see multiple instances of this + * type of memory controller. The ID is therefore hardcoded to 0. */ - for (last_cumul_size = index = 0; index < mci->nr_csrows; index++) { - u16 value; - u32 cumul_size; - struct csrow_info *csrow = &mci->csrows[index]; - - pci_read_config_word(mci->pdev, I82860_GBA + index * 2, - &value); - - cumul_size = (value & I82860_GBA_MASK) << - (I82860_GBA_SHIFT - PAGE_SHIFT); - debugf3("%s(): (%d) cumul_size 0x%x\n", __func__, index, - cumul_size); - - if (cumul_size == last_cumul_size) - continue; /* not populated */ - - csrow->first_page = last_cumul_size; - csrow->last_page = cumul_size - 1; - csrow->nr_pages = cumul_size - last_cumul_size; - last_cumul_size = cumul_size; - csrow->grain = 1 << 12; /* I82860_EAP has 4KiB reolution */ - csrow->mtype = MEM_RMBS; - csrow->dtype = DEV_UNKNOWN; - csrow->edac_mode = mchcfg_ddim ? EDAC_SECDED : EDAC_NONE; + if (edac_mc_add_mc(mci,0)) { + debugf3("%s(): failed edac_mc_add_mc()\n", __func__); + goto fail; } - i82860_get_error_info(mci, &discard); /* clear counters */ + /* get this far and it's successful */ + debugf3("%s(): success\n", __func__); - if (edac_mc_add_mc(mci)) { - debugf3("%s(): failed edac_mc_add_mc()\n", __func__); - edac_mc_free(mci); - } else { - /* get this far and it's successful */ - debugf3("%s(): success\n", __func__); - rc = 0; - } + return 0; - return rc; +fail: + edac_mc_free(mci); + return -ENODEV; } /* returns count (>= 0), or negative on error */ @@ -240,7 +249,7 @@ static void __devexit i82860_remove_one(struct pci_dev *pdev) debugf0("%s()\n", __func__); - if ((mci = edac_mc_del_mc(pdev)) == NULL) + if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL) return; edac_mc_free(mci); |