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| author | Jithu Joseph <jithu.joseph@intel.com> | 2023-10-05 12:51:37 -0700 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2023-10-06 13:09:42 +0300 |
| commit | 06d65b2bc532fc9af1c55aa7a18cfd237ce46588 (patch) | |
| tree | 814f446d7068de9bcfc423216a5fc65c5d134dce /drivers/platform/x86/intel/ifs/runtest.c | |
| parent | b9aa9e4c8b4e52b6f2f5986b27e97f4b6163f0bf (diff) | |
| download | linux-06d65b2bc532fc9af1c55aa7a18cfd237ce46588.tar.gz linux-06d65b2bc532fc9af1c55aa7a18cfd237ce46588.tar.bz2 linux-06d65b2bc532fc9af1c55aa7a18cfd237ce46588.zip | |
platform/x86/intel/ifs: ARRAY BIST for Sierra Forest
Array BIST MSR addresses, bit definition and semantics are different for
Sierra Forest. Branch into a separate Array BIST flow on Sierra Forest
when user invokes Array Test.
Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Tested-by: Pengfei Xu <pengfei.xu@intel.com>
Link: https://lore.kernel.org/r/20231005195137.3117166-10-jithu.joseph@intel.com
[ij: ARRAY_GEN_* -> ARRAY_GEN* for consistency]
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'drivers/platform/x86/intel/ifs/runtest.c')
| -rw-r--r-- | drivers/platform/x86/intel/ifs/runtest.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/drivers/platform/x86/intel/ifs/runtest.c b/drivers/platform/x86/intel/ifs/runtest.c index 4fe544d79946..9c1a027bc591 100644 --- a/drivers/platform/x86/intel/ifs/runtest.c +++ b/drivers/platform/x86/intel/ifs/runtest.c @@ -329,6 +329,38 @@ static void ifs_array_test_core(int cpu, struct device *dev) ifsd->status = SCAN_TEST_PASS; } +#define ARRAY_GEN1_TEST_ALL_ARRAYS 0x0ULL +#define ARRAY_GEN1_STATUS_FAIL 0x1ULL + +static int do_array_test_gen1(void *status) +{ + int cpu = smp_processor_id(); + int first; + + first = cpumask_first(cpu_smt_mask(cpu)); + + if (cpu == first) { + wrmsrl(MSR_ARRAY_TRIGGER, ARRAY_GEN1_TEST_ALL_ARRAYS); + rdmsrl(MSR_ARRAY_STATUS, *((u64 *)status)); + } + + return 0; +} + +static void ifs_array_test_gen1(int cpu, struct device *dev) +{ + struct ifs_data *ifsd = ifs_get_data(dev); + u64 status = 0; + + stop_core_cpuslocked(cpu, do_array_test_gen1, &status); + ifsd->scan_details = status; + + if (status & ARRAY_GEN1_STATUS_FAIL) + ifsd->status = SCAN_TEST_FAIL; + else + ifsd->status = SCAN_TEST_PASS; +} + /* * Initiate per core test. It wakes up work queue threads on the target cpu and * its sibling cpu. Once all sibling threads wake up, the scan test gets executed and @@ -356,7 +388,10 @@ int do_core_test(int cpu, struct device *dev) ifs_test_core(cpu, dev); break; case IFS_TYPE_ARRAY_BIST: - ifs_array_test_core(cpu, dev); + if (ifsd->array_gen == ARRAY_GEN0) + ifs_array_test_core(cpu, dev); + else + ifs_array_test_gen1(cpu, dev); break; default: return -EINVAL; |