1 /***********************license start***********************************
2 * Copyright (c) 2003-2017 Cavium Inc. ([email protected]). All rights
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38 ***********************license end**************************************/
39 #include <bdk.h>
40 #include "dram-internal.h"
41
42 /* FIXME(dhendrix): added */
43 #include <libbdk-hal/bdk-l2c.h>
44 #include <libbdk-hal/bdk-utils.h>
45
limit_l2_ways(bdk_node_t node,int ways,int verbose)46 int limit_l2_ways(bdk_node_t node, int ways, int verbose)
47 {
48 int ways_max = bdk_l2c_get_num_assoc(node);
49 int ways_min = 0;
50 int errors = 0;
51
52 if (ways >= ways_min && ways <= ways_max)
53 {
54 uint32_t valid_mask = (0x1 << ways_max) - 1;
55 uint32_t mask = (valid_mask << ways) & valid_mask;
56 if (verbose)
57 printf("Limiting L2 to %d ways\n", ways);
58 for (int i = 0; i < (int)bdk_get_num_cores(node); i++)
59 errors += bdk_l2c_set_core_way_partition(node, i, mask);
60 errors += bdk_l2c_set_hw_way_partition(node, mask);
61 }
62 else
63 {
64 errors++;
65 printf("ERROR: invalid limit_l2_ways %d, must be between %d and %d\n",
66 ways, ways_min, ways_max);
67 }
68 if (errors)
69 puts("ERROR limiting L2 cache ways\n");
70
71 return errors;
72 }
73
74