diff options
Diffstat (limited to 'drivers/edac/ghes_edac.c')
| -rw-r--r-- | drivers/edac/ghes_edac.c | 36 |
1 files changed, 26 insertions, 10 deletions
diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c index fb866804820..b4acc4f2074 100644 --- a/drivers/edac/ghes_edac.c +++ b/drivers/edac/ghes_edac.c @@ -9,12 +9,13 @@ * Red Hat Inc. http://www.redhat.com */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <acpi/ghes.h> #include <linux/edac.h> #include <linux/dmi.h> #include "edac_core.h" -#define GHES_PFX "ghes_edac: " #define GHES_EDAC_REVISION " Ver: 1.0.0" struct ghes_edac_pvt { @@ -27,6 +28,7 @@ static LIST_HEAD(ghes_reglist); static DEFINE_MUTEX(ghes_edac_lock); static int ghes_edac_mc_num; + /* Memory Device - Type 17 of SMBIOS spec */ struct memdev_dmi_entry { u8 type; @@ -98,7 +100,8 @@ static void ghes_edac_dmidecode(const struct dmi_header *dh, void *arg) dimm_fill->count, 0, 0); if (entry->size == 0xffff) { - pr_info(GHES_PFX "Can't get dimm size\n"); + pr_info("Can't get DIMM%i size\n", + dimm_fill->count); dimm->nr_pages = MiB_TO_PAGES(32);/* Unknown */ } else if (entry->size == 0x7fff) { dimm->nr_pages = MiB_TO_PAGES(entry->extended_size); @@ -163,11 +166,11 @@ static void ghes_edac_dmidecode(const struct dmi_header *dh, void *arg) */ if (dimm->nr_pages) { - pr_info(GHES_PFX "DIMM%i: %s size = %d MB%s\n", + edac_dbg(1, "DIMM%i: %s size = %d MB%s\n", dimm_fill->count, memory_type[dimm->mtype], PAGES_TO_MiB(dimm->nr_pages), (dimm->edac_mode != EDAC_NONE) ? "(ECC)" : ""); - pr_info(GHES_PFX "\ttype %d, detail 0x%02x, width %d(total %d)\n", + edac_dbg(2, "\ttype %d, detail 0x%02x, width %d(total %d)\n", entry->memory_type, entry->type_detail, entry->total_width, entry->data_width); } @@ -261,12 +264,10 @@ int ghes_edac_register(struct ghes *ghes, struct device *dev) * to avoid duplicated memory controller numbers */ mutex_lock(&ghes_edac_lock); - pr_info("ghes_edac#%d: allocating space for %d dimms\n", - ghes_edac_mc_num, num_dimm); mci = edac_mc_alloc(ghes_edac_mc_num, ARRAY_SIZE(layers), layers, sizeof(*pvt)); if (!mci) { - pr_info(GHES_PFX "Can't allocate memory for EDAC data\n"); + pr_info("Can't allocate memory for EDAC data\n"); mutex_unlock(&ghes_edac_lock); return -ENOMEM; } @@ -286,6 +287,22 @@ int ghes_edac_register(struct ghes *ghes, struct device *dev) mci->ctl_name = "ghes_edac"; mci->dev_name = "ghes"; + if (!ghes_edac_mc_num) { + if (!fake) { + pr_info("This EDAC driver relies on BIOS to enumerate memory and get error reports.\n"); + pr_info("Unfortunately, not all BIOSes reflect the memory layout correctly.\n"); + pr_info("So, the end result of using this driver varies from vendor to vendor.\n"); + pr_info("If you find incorrect reports, please contact your hardware vendor\n"); + pr_info("to correct its BIOS.\n"); + pr_info("This system has %d DIMM sockets.\n", + num_dimm); + } else { + pr_info("This system has a very crappy BIOS: It doesn't even list the DIMMS.\n"); + pr_info("Its SMBIOS info is wrong. It is doubtful that the error report would\n"); + pr_info("work on such system. Use this driver with caution\n"); + } + } + if (!fake) { /* * Fill DIMM info from DMI for the memory controller #0 @@ -304,8 +321,7 @@ int ghes_edac_register(struct ghes *ghes, struct device *dev) struct dimm_info *dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers, 0, 0, 0); - pr_info(GHES_PFX "Crappy BIOS detected. Faking DIMM EDAC data\n"); - dimm->nr_pages = 1000; + dimm->nr_pages = 1; dimm->grain = 128; dimm->mtype = MEM_UNKNOWN; dimm->dtype = DEV_UNKNOWN; @@ -314,7 +330,7 @@ int ghes_edac_register(struct ghes *ghes, struct device *dev) rc = edac_mc_add_mc(mci); if (rc < 0) { - pr_info(GHES_PFX "Can't register at EDAC core\n"); + pr_info("Can't register at EDAC core\n"); edac_mc_free(mci); mutex_unlock(&ghes_edac_lock); return -ENODEV; |