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>

diff --git a/drivers/edac/i5100_edac.c b/drivers/edac/i5100_edac.c
index c08e94064ef6a14aa5a6c45ce2a4346ff270fa01..691cd49aa169b6f85c9cbbc9694f268c68dba7c0 100644 (file)
--- 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;