diff options
Diffstat (limited to 'src/vendorcode/cavium/bdk/libdram/dram-l2c.c')
| -rw-r--r-- | src/vendorcode/cavium/bdk/libdram/dram-l2c.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/vendorcode/cavium/bdk/libdram/dram-l2c.c b/src/vendorcode/cavium/bdk/libdram/dram-l2c.c new file mode 100644 index 0000000000..11112955b2 --- /dev/null +++ b/src/vendorcode/cavium/bdk/libdram/dram-l2c.c @@ -0,0 +1,69 @@ +/***********************license start*********************************** +* Copyright (c) 2003-2017 Cavium Inc. (support@cavium.com). All rights +* reserved. +* +* +* Redistribution and use in source and binary forms, with or without +* modification, are permitted provided that the following conditions are +* met: +* +* * Redistributions of source code must retain the above copyright +* notice, this list of conditions and the following disclaimer. +* +* * Redistributions in binary form must reproduce the above +* copyright notice, this list of conditions and the following +* disclaimer in the documentation and/or other materials provided +* with the distribution. +* +* * Neither the name of Cavium Inc. nor the names of +* its contributors may be used to endorse or promote products +* derived from this software without specific prior written +* permission. +* +* This Software, including technical data, may be subject to U.S. export +* control laws, including the U.S. Export Administration Act and its +* associated regulations, and may be subject to export or import +* regulations in other countries. +* +* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" +* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR +* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT +* TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY +* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT +* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES +* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR +* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, +* QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK +* ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU. +***********************license end**************************************/ +#include <bdk.h> +#include "dram-internal.h" + +int limit_l2_ways(bdk_node_t node, int ways, int verbose) +{ + int ways_max = bdk_l2c_get_num_assoc(node); + int ways_min = 0; + int errors = 0; + + if (ways >= ways_min && ways <= ways_max) + { + uint32_t valid_mask = (0x1 << ways_max) - 1; + uint32_t mask = (valid_mask << ways) & valid_mask; + if (verbose) + printf("Limiting L2 to %d ways\n", ways); + for (int i = 0; i < (int)bdk_get_num_cores(node); i++) + errors += bdk_l2c_set_core_way_partition(node, i, mask); + errors += bdk_l2c_set_hw_way_partition(node, mask); + } + else + { + errors++; + printf("ERROR: invalid limit_l2_ways %d, must be between %d and %d\n", + ways, ways_min, ways_max); + } + if (errors) + puts("ERROR limiting L2 cache ways\n"); + + return errors; +} + |