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- Various switch fall through annotations to fixup warnings & errors resulting from -Wimplicit-fallthrough. - A fix for systems (at least jazz) using an i8253 PIT as clocksource when it's not suitably configured. - Set struct cacheinfo's cpu_map_populated field to true, indicating that we filled in cache info detected from cop0 registers & avoiding complaints about that info being (intentionally) missing in devicetree. -----BEGIN PGP SIGNATURE----- iIsEABYIADMWIQRgLjeFAZEXQzy86/s+p5+stXUA3QUCXUnSPBUccGF1bC5idXJ0 b25AbWlwcy5jb20ACgkQPqefrLV1AN2u3gD/TaMPczS5027R0FMXskiroUHaMG4S JL0EYIVmfny4vwYBAIvLr5l1jEXEqegjYXFabuI5PybQlFmTZMhjauh6gKYJ =e6fl -----END PGP SIGNATURE----- Merge tag 'mips_fixes_5.3_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS fixes from Paul Burton: "A few MIPS fixes for 5.3: - Various switch fall through annotations to fixup warnings & errors resulting from -Wimplicit-fallthrough. - A fix for systems (at least jazz) using an i8253 PIT as clocksource when it's not suitably configured. - Set struct cacheinfo's cpu_map_populated field to true, indicating that we filled in cache info detected from cop0 registers & avoiding complaints about that info being (intentionally) missing in devicetree" * tag 'mips_fixes_5.3_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: BCM63XX: Mark expected switch fall-through MIPS: OProfile: Mark expected switch fall-throughs MIPS: Annotate fall-through in Cavium Octeon code MIPS: Annotate fall-through in kvm/emulate.c mips: fix cacheinfo MIPS: kernel: only use i8253 clocksource with periodic clockevent
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* MIPS cacheinfo support
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*/
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#include <linux/cacheinfo.h>
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/* Populates leaf and increments to next leaf */
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#define populate_cache(cache, leaf, c_level, c_type) \
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do { \
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leaf->type = c_type; \
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leaf->level = c_level; \
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leaf->coherency_line_size = c->cache.linesz; \
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leaf->number_of_sets = c->cache.sets; \
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leaf->ways_of_associativity = c->cache.ways; \
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leaf->size = c->cache.linesz * c->cache.sets * \
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c->cache.ways; \
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leaf++; \
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} while (0)
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static int __init_cache_level(unsigned int cpu)
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{
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struct cpuinfo_mips *c = ¤t_cpu_data;
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struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
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int levels = 0, leaves = 0;
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/*
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* If Dcache is not set, we assume the cache structures
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* are not properly initialized.
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*/
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if (c->dcache.waysize)
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levels += 1;
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else
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return -ENOENT;
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leaves += (c->icache.waysize) ? 2 : 1;
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if (c->scache.waysize) {
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levels++;
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leaves++;
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}
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if (c->tcache.waysize) {
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levels++;
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leaves++;
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}
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this_cpu_ci->num_levels = levels;
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this_cpu_ci->num_leaves = leaves;
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return 0;
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}
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static int __populate_cache_leaves(unsigned int cpu)
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{
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struct cpuinfo_mips *c = ¤t_cpu_data;
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struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
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struct cacheinfo *this_leaf = this_cpu_ci->info_list;
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if (c->icache.waysize) {
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populate_cache(dcache, this_leaf, 1, CACHE_TYPE_DATA);
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populate_cache(icache, this_leaf, 1, CACHE_TYPE_INST);
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} else {
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populate_cache(dcache, this_leaf, 1, CACHE_TYPE_UNIFIED);
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}
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if (c->scache.waysize)
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populate_cache(scache, this_leaf, 2, CACHE_TYPE_UNIFIED);
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if (c->tcache.waysize)
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populate_cache(tcache, this_leaf, 3, CACHE_TYPE_UNIFIED);
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this_cpu_ci->cpu_map_populated = true;
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return 0;
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}
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DEFINE_SMP_CALL_CACHE_FUNCTION(init_cache_level)
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DEFINE_SMP_CALL_CACHE_FUNCTION(populate_cache_leaves)
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