Messages in this thread Patch in this message |  | | | From | Borislav Petkov <> | | Subject | [PATCH -v3 5/6] EDAC, MCE, AMD: Add attributes needed for HW injection | | Date | Mon, 9 May 2011 20:35:54 +0200 |
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From: Borislav Petkov <borislav.petkov@amd.com>
hw_inject denotes whether we want to do a hardware or a software injection and, in the case of hardware injection, we want to do that on a particular cpu, thus the second 'cpu' attribute.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> --- drivers/edac/mce_amd_inj.c | 57 ++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 57 insertions(+), 0 deletions(-) diff --git a/drivers/edac/mce_amd_inj.c b/drivers/edac/mce_amd_inj.c index 421c3b5..592871f 100644 --- a/drivers/edac/mce_amd_inj.c +++ b/drivers/edac/mce_amd_inj.c @@ -77,6 +77,61 @@ static int toggle_hw_mce_inject(unsigned int cpu, bool enable) } /* + * HW or SW injection + */ +static int hw_inj_get(void *data, u64 *val) +{ + struct mce *m = (struct mce *)data; + + *val = !!(m->inject_flags & MCJ_HW_INJECT); + + return 0; +} + +static int hw_inj_set(void *data, u64 val) +{ + struct mce *m = (struct mce *)data; + + switch (val) { + case 0: + m->inject_flags &= (u8)~MCJ_HW_INJECT; + break; + + case 1: + m->inject_flags |= MCJ_HW_INJECT; + break; + + default: + printk(KERN_ERR "%s: Only 0 or 1 allowed!\n", __func__); + return -EINVAL; + } + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(hw_inj_fops, hw_inj_get, hw_inj_set, "%llu\n"); + +/* + * On which CPU to inject? + */ + +MCE_INJECT_GET(extcpu); + + +static int inj_extcpu_set(void *data, u64 val) +{ + struct mce *m = (struct mce *)data; + + if (val >= num_online_cpus()) { + printk(KERN_ERR "%s: Non-existent CPU: %llu\n", __func__, val); + return -EINVAL; + } + m->extcpu = val; + return 0; +} + +DEFINE_SIMPLE_ATTRIBUTE(extcpu_fops, inj_extcpu_get, inj_extcpu_set, "%llu\n"); + +/* * This denotes into which bank we're injecting and triggers * the injection, at the same time. */ @@ -116,6 +171,8 @@ struct dfs_node { { .name = "misc", .fops = &misc_fops }, { .name = "addr", .fops = &addr_fops }, { .name = "bank", .fops = &bank_fops }, + { .name = "hw_inject", .fops = &hw_inj_fops }, + { .name = "cpu", .fops = &extcpu_fops }, }; static int __init edac_init_mce_inject(void) -- 1.7.4.rc2
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