diff options
-rw-r--r-- | drivers/edac/amd64_edac.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index c6d1aed2943f..ed9b07a4cf8f 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c | |||
@@ -1204,28 +1204,21 @@ static int f10_early_channel_count(struct amd64_pvt *pvt) | |||
1204 | int i, j, channels = 0; | 1204 | int i, j, channels = 0; |
1205 | u32 dbam; | 1205 | u32 dbam; |
1206 | 1206 | ||
1207 | if (amd64_read_pci_cfg(pvt->dram_f2_ctl, F10_DCLR_0, &pvt->dclr0)) | ||
1208 | goto err_reg; | ||
1209 | |||
1210 | if (amd64_read_pci_cfg(pvt->dram_f2_ctl, F10_DCLR_1, &pvt->dclr1)) | ||
1211 | goto err_reg; | ||
1212 | |||
1213 | /* If we are in 128 bit mode, then we are using 2 channels */ | 1207 | /* If we are in 128 bit mode, then we are using 2 channels */ |
1214 | if (pvt->dclr0 & F10_WIDTH_128) { | 1208 | if (pvt->dclr0 & F10_WIDTH_128) { |
1215 | debugf0("Data WIDTH is 128 bits - 2 channels\n"); | ||
1216 | channels = 2; | 1209 | channels = 2; |
1217 | return channels; | 1210 | return channels; |
1218 | } | 1211 | } |
1219 | 1212 | ||
1220 | /* | 1213 | /* |
1221 | * Need to check if in UN-ganged mode: In such, there are 2 channels, | 1214 | * Need to check if in unganged mode: In such, there are 2 channels, |
1222 | * but they are NOT in 128 bit mode and thus the above 'dcl0' status bit | 1215 | * but they are not in 128 bit mode and thus the above 'dclr0' status |
1223 | * will be OFF. | 1216 | * bit will be OFF. |
1224 | * | 1217 | * |
1225 | * Need to check DCT0[0] and DCT1[0] to see if only one of them has | 1218 | * Need to check DCT0[0] and DCT1[0] to see if only one of them has |
1226 | * their CSEnable bit on. If so, then SINGLE DIMM case. | 1219 | * their CSEnable bit on. If so, then SINGLE DIMM case. |
1227 | */ | 1220 | */ |
1228 | debugf0("Data WIDTH is NOT 128 bits - need more decoding\n"); | 1221 | debugf0("Data width is not 128 bits - need more decoding\n"); |
1229 | 1222 | ||
1230 | /* | 1223 | /* |
1231 | * Check DRAM Bank Address Mapping values for each DIMM to see if there | 1224 | * Check DRAM Bank Address Mapping values for each DIMM to see if there |
@@ -1244,6 +1237,9 @@ static int f10_early_channel_count(struct amd64_pvt *pvt) | |||
1244 | } | 1237 | } |
1245 | } | 1238 | } |
1246 | 1239 | ||
1240 | if (channels > 2) | ||
1241 | channels = 2; | ||
1242 | |||
1247 | debugf0("MCT channel count: %d\n", channels); | 1243 | debugf0("MCT channel count: %d\n", channels); |
1248 | 1244 | ||
1249 | return channels; | 1245 | return channels; |