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| /gem5/src/mem/ | ||
| H A D | dram_ctrl.hh | diff 10286:e95a0ab1d368 Tue Aug 26 10:12:00 EDT 2014 Andreas Hansson <andreas.hansson@arm.com> mem: Fix address interleaving bug in DRAM controller This patch fixes a bug in the DRAM controller address decoding. In cases where the DRAM burst size (e.g. 32 bytes in a rank with a single LPDDR3 x32) was smaller than the channel interleaving size (e.g. systems with a 64-byte cache line) one address bit effectively got used as a channel bit when it should have been a low-order column bit. This patch adds a notion of "columns per stripe", and more clearly deals with the low-order column bits and high-order column bits. The patch also relaxes the granularity check such that it is possible to use interleaving granularities other than the cache line size. The patch also adds a missing M5_CLASS_VAR_USED to the tCK member as it is only used in the debug build for now. |
| H A D | dram_ctrl.cc | diff 10286:e95a0ab1d368 Tue Aug 26 10:12:00 EDT 2014 Andreas Hansson <andreas.hansson@arm.com> mem: Fix address interleaving bug in DRAM controller This patch fixes a bug in the DRAM controller address decoding. In cases where the DRAM burst size (e.g. 32 bytes in a rank with a single LPDDR3 x32) was smaller than the channel interleaving size (e.g. systems with a 64-byte cache line) one address bit effectively got used as a channel bit when it should have been a low-order column bit. This patch adds a notion of "columns per stripe", and more clearly deals with the low-order column bits and high-order column bits. The patch also relaxes the granularity check such that it is possible to use interleaving granularities other than the cache line size. The patch also adds a missing M5_CLASS_VAR_USED to the tCK member as it is only used in the debug build for now. |
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