src/mem/dram_ctrl.cc

140     DPRINTF(DRAM, "Row buffer size %d bytes with %d columns per row buffer\n",
229             // ...and equal or smaller than the row-buffer size
232                       "as the row-buffer size\n", name());
310     // Ro, Ra, Co, Ba and Ch denoting row, rank, column, bank and
314     // use a 64-bit unsigned during the computations as the row is
316     uint64_t row;
319     // a specific column, row, bank, rank and channel
326         // sequential cache lines occupy the same row
342         // lastly, get the row bits, no need to remove them from addr
343         row = addr % rowsPerBank;
364         // lastly, get the row bits, no need to remove them from addr
365         row = addr % rowsPerBank;
390         // lastly, get the row bits, no need to remove them from addr
391         row = addr % rowsPerBank;
397     assert(row < rowsPerBank);
398     assert(row < Bank::NO_ROW);
401             dramPktAddr, rank, bank, row);
407     return new DRAMPacket(pkt, isRead, rank, bank, row, bank_id, dramPktAddr,
817     // search for seamless row hits first, if no seamless row hit is
820     // Will select closed rows first to enable more open row possibilies
824     // remember if we found a row hit, not seamless, but bank prepped
828     // if we have no row hit, prepped or not, and no seamless packet,
854             // check if it is a row hit
855             if (bank.openRow == dram_pkt->row) {
858                 // go for the row hit
864                     DPRINTF(DRAM, "%s Seamless row buffer hit\n", __func__);
869                     // if we did not find a packet to a closed row that can
871                     // did not yet find a packet to a prepped row, remember
875                     DPRINTF(DRAM, "%s Prepped row buffer hit\n", __func__);
955                        Tick act_tick, uint32_t row)
961     // update the open row
963     bank_ref.openRow = row;
987     // Respect the row-to-column command delay for both read and write cmds
1057     // make sure the bank has an open row
1105     DPRINTF(DRAM, "Timing access to addr %lld, rank/bank/row %d %d %d\n",
1106             dram_pkt->addr, dram_pkt->rank, dram_pkt->bank, dram_pkt->row);
1122     // for the state we need to track if it is a row hit or not
1126     if (bank.openRow == dram_pkt->row) {
1142         activateBank(rank, bank, act_tick, dram_pkt->row);
1207     // increment the bytes accessed and the accesses per row
1222         // page open, but close it if there are no row hits, and there
1225         // page, but closes it only if there are no row hits in the queue.
1249                     bool same_row = dram_pkt->row == (*p)->row;
1288     // closing the row after the read/write burst
2607         .desc("Number of row buffer hits during reads");
2611         .desc("Number of row buffer hits during writes");
2650          .desc("Bytes accessed per row activation")