e7xxx_edac: convert driver to use the new edac ABI

The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 30 insertions, 7 deletions

diff --git a/drivers/edac/e7xxx_edac.c b/drivers/edac/e7xxx_edac.c
index 709aca216639..d4cfc24b2f8d 100644
--- a/drivers/edac/e7xxx_edac.c
+++ b/drivers/edac/e7xxx_edac.c
@@ -10,6 +10,9 @@
  * Based on work by Dan Hollis <goemon at anime dot net> and others.
  *      http://www.anime.net/~goemon/linux-ecc/
  *
+ * Datasheet:
+ *      http://www.intel.com/content/www/us/en/chipsets/e7501-chipset-memory-controller-hub-datasheet.html
+ *
  * Contributors:
  *      Eric Biederman (Linux Networx)
  *      Tom Zimmerman (Linux Networx)
@@ -71,7 +74,7 @@
 #endif                          /* PCI_DEVICE_ID_INTEL_7505_1_ERR */
 
 #define E7XXX_NR_CSROWS         8       /* number of csrows */
-#define E7XXX_NR_DIMMS          8       /* FIXME - is this correct? */
+#define E7XXX_NR_DIMMS          8       /* 2 channels, 4 dimms/channel */
 
 /* E7XXX register addresses - device 0 function 0 */
 #define E7XXX_DRB               0x60    /* DRAM row boundary register (8b) */
@@ -216,13 +219,15 @@ static void process_ce(struct mem_ctl_info *mci, struct e7xxx_error_info *info)
         row = edac_mc_find_csrow_by_page(mci, page);
         /* convert syndrome to channel */
         channel = e7xxx_find_channel(syndrome);
-        edac_mc_handle_ce(mci, page, 0, syndrome, row, channel, "e7xxx CE");
+        edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, page, 0, syndrome,
+                             row, channel, -1, "e7xxx CE", "", NULL);
 }
 
 static void process_ce_no_info(struct mem_ctl_info *mci)
 {
         debugf3("%s()\n", __func__);
-        edac_mc_handle_ce_no_info(mci, "e7xxx CE log register overflow");
+        edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 0, 0, 0, -1, -1, -1,
+                             "e7xxx CE log register overflow", "", NULL);
 }
 
 static void process_ue(struct mem_ctl_info *mci, struct e7xxx_error_info *info)
@@ -236,13 +241,17 @@ static void process_ue(struct mem_ctl_info *mci, struct e7xxx_error_info *info)
         /* FIXME - should use PAGE_SHIFT */
         block_page = error_2b >> 6;     /* convert to 4k address */
         row = edac_mc_find_csrow_by_page(mci, block_page);
-        edac_mc_handle_ue(mci, block_page, 0, row, "e7xxx UE");
+
+        edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, block_page, 0, 0,
+                             row, -1, -1, "e7xxx UE", "", NULL);
 }
 
 static void process_ue_no_info(struct mem_ctl_info *mci)
 {
         debugf3("%s()\n", __func__);
-        edac_mc_handle_ue_no_info(mci, "e7xxx UE log register overflow");
+
+        edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 0, 0, 0, -1, -1, -1,
+                             "e7xxx UE log register overflow", "", NULL);
 }
 
 static void e7xxx_get_error_info(struct mem_ctl_info *mci,
@@ -413,6 +422,7 @@ static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx)
 {
         u16 pci_data;
         struct mem_ctl_info *mci = NULL;
+        struct edac_mc_layer layers[2];
         struct e7xxx_pvt *pvt = NULL;
         u32 drc;
         int drc_chan;
@@ -423,8 +433,21 @@ static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx)
         pci_read_config_dword(pdev, E7XXX_DRC, &drc);
 
         drc_chan = dual_channel_active(drc, dev_idx);
-        mci = edac_mc_alloc(sizeof(*pvt), E7XXX_NR_CSROWS, drc_chan + 1, 0);
-
+        /*
+         * According with the datasheet, this device has a maximum of
+         * 4 DIMMS per channel, either single-rank or dual-rank. So, the
+         * total amount of dimms is 8 (E7XXX_NR_DIMMS).
+         * That means that the DIMM is mapped as CSROWs, and the channel
+         * will map the rank. So, an error to either channel should be
+         * attributed to the same dimm.
+         */
+        layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
+        layers[0].size = E7XXX_NR_CSROWS;
+        layers[0].is_virt_csrow = true;
+        layers[1].type = EDAC_MC_LAYER_CHANNEL;
+        layers[1].size = drc_chan + 1;
+        layers[1].is_virt_csrow = false;
+        mci = new_edac_mc_alloc(0, ARRAY_SIZE(layers), layers, sizeof(*pvt));
         if (mci == NULL)
                 return -ENOMEM;