i5100_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: "Niklas Söderlund" <niklas.soderlund@ericsson.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 40 insertions, 50 deletions

diff --git a/drivers/edac/i5100_edac.c b/drivers/edac/i5100_edac.c
index c08e94064ef6..691cd49aa169 100644
--- a/drivers/edac/i5100_edac.c
+++ b/drivers/edac/i5100_edac.c
@@ -14,6 +14,11 @@
  * rows for each respective channel are laid out one after another,
  * the first half belonging to channel 0, the second half belonging
  * to channel 1.
+ *
+ * This driver is for DDR2 DIMMs, and it uses chip select to select among the
+ * several ranks. However, instead of showing memories as ranks, it outputs
+ * them as DIMM's. An internal table creates the association between ranks
+ * and DIMM's.
  */
 #include <linux/module.h>
 #include <linux/init.h>
@@ -410,14 +415,6 @@ static int i5100_csrow_to_chan(const struct mem_ctl_info *mci, int csrow)
         return csrow / priv->ranksperchan;
 }
 
-static unsigned i5100_rank_to_csrow(const struct mem_ctl_info *mci,
-                                    int chan, int rank)
-{
-        const struct i5100_priv *priv = mci->pvt_info;
-
-        return chan * priv->ranksperchan + rank;
-}
-
 static void i5100_handle_ce(struct mem_ctl_info *mci,
                             int chan,
                             unsigned bank,
@@ -427,21 +424,17 @@ static void i5100_handle_ce(struct mem_ctl_info *mci,
                             unsigned ras,
                             const char *msg)
 {
-        const int csrow = i5100_rank_to_csrow(mci, chan, rank);
-        char *label = NULL;
+        char detail[80];
 
-        if (mci->csrows[csrow].channels[0].dimm)
-                label = mci->csrows[csrow].channels[0].dimm->label;
+        /* Form out message */
+        snprintf(detail, sizeof(detail),
+                 "bank %u, cas %u, ras %u\n",
+                 bank, cas, ras);
 
-        printk(KERN_ERR
-                "CE chan %d, bank %u, rank %u, syndrome 0x%lx, "
-                "cas %u, ras %u, csrow %u, label \"%s\": %s\n",
-                chan, bank, rank, syndrome, cas, ras,
-                csrow, label, msg);
-
-        mci->ce_count++;
-        mci->csrows[csrow].ce_count++;
-        mci->csrows[csrow].channels[0].ce_count++;
+        edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci,
+                             0, 0, syndrome,
+                             chan, rank, -1,
+                             msg, detail, NULL);
 }
 
 static void i5100_handle_ue(struct mem_ctl_info *mci,
@@ -453,20 +446,17 @@ static void i5100_handle_ue(struct mem_ctl_info *mci,
                             unsigned ras,
                             const char *msg)
 {
-        const int csrow = i5100_rank_to_csrow(mci, chan, rank);
-        char *label = NULL;
-
-        if (mci->csrows[csrow].channels[0].dimm)
-                label = mci->csrows[csrow].channels[0].dimm->label;
+        char detail[80];
 
-        printk(KERN_ERR
-                "UE chan %d, bank %u, rank %u, syndrome 0x%lx, "
-                "cas %u, ras %u, csrow %u, label \"%s\": %s\n",
-                chan, bank, rank, syndrome, cas, ras,
-                csrow, label, msg);
+        /* Form out message */
+        snprintf(detail, sizeof(detail),
+                 "bank %u, cas %u, ras %u\n",
+                 bank, cas, ras);
 
-        mci->ue_count++;
-        mci->csrows[csrow].ue_count++;
+        edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci,
+                             0, 0, syndrome,
+                             chan, rank, -1,
+                             msg, detail, NULL);
 }
 
 static void i5100_read_log(struct mem_ctl_info *mci, int chan,
@@ -843,11 +833,10 @@ static void __devinit i5100_init_interleaving(struct pci_dev *pdev,
 static void __devinit i5100_init_csrows(struct mem_ctl_info *mci)
 {
         int i;
-        unsigned long total_pages = 0UL;
         struct i5100_priv *priv = mci->pvt_info;
-        struct dimm_info *dimm;
 
-        for (i = 0; i < mci->nr_csrows; i++) {
+        for (i = 0; i < mci->tot_dimms; i++) {
+                struct dimm_info *dimm;
                 const unsigned long npages = i5100_npages(mci, i);
                 const unsigned chan = i5100_csrow_to_chan(mci, i);
                 const unsigned rank = i5100_csrow_to_rank(mci, i);
@@ -855,30 +844,23 @@ static void __devinit i5100_init_csrows(struct mem_ctl_info *mci)
                 if (!npages)
                         continue;
 
-                /*
-                 * FIXME: these two are totally bogus -- I don't see how to
-                 * map them correctly to this structure...
-                 */
-                mci->csrows[i].csrow_idx = i;
-                mci->csrows[i].mci = mci;
-                mci->csrows[i].nr_channels = 1;
-                mci->csrows[i].channels[0].csrow = mci->csrows + i;
-                total_pages += npages;
+                dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers,
+                               chan, rank, 0);
 
-                dimm = mci->csrows[i].channels[0].dimm;
                 dimm->nr_pages = npages;
                 if (npages) {
-                        total_pages += npages;
-
                         dimm->grain = 32;
                         dimm->dtype = (priv->mtr[chan][rank].width == 4) ?
-                                DEV_X4 : DEV_X8;
+                                        DEV_X4 : DEV_X8;
                         dimm->mtype = MEM_RDDR2;
                         dimm->edac_mode = EDAC_SECDED;
                         snprintf(dimm->label, sizeof(dimm->label),
                                 "DIMM%u",
                                 i5100_rank_to_slot(mci, chan, rank));
                 }
+
+                debugf2("dimm channel %d, rank %d, size %zd\n",
+                        chan, rank, PAGES_TO_MiB(npages));
         }
 }
 
@@ -887,6 +869,7 @@ static int __devinit i5100_init_one(struct pci_dev *pdev,
 {
         int rc;
         struct mem_ctl_info *mci;
+        struct edac_mc_layer layers[2];
         struct i5100_priv *priv;
         struct pci_dev *ch0mm, *ch1mm;
         int ret = 0;
@@ -947,7 +930,14 @@ static int __devinit i5100_init_one(struct pci_dev *pdev,
                 goto bail_ch1;
         }
 
-        mci = edac_mc_alloc(sizeof(*priv), ranksperch * 2, 1, 0);
+        layers[0].type = EDAC_MC_LAYER_CHANNEL;
+        layers[0].size = 2;
+        layers[0].is_virt_csrow = false;
+        layers[1].type = EDAC_MC_LAYER_SLOT;
+        layers[1].size = ranksperch;
+        layers[1].is_virt_csrow = true;
+        mci = new_edac_mc_alloc(0, ARRAY_SIZE(layers), layers,
+                            sizeof(*priv));
         if (!mci) {
                 ret = -ENOMEM;
                 goto bail_disable_ch1;