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charset="utf-8" Enable injection using EINJv2 mode of operation. [Tony: Mostly Zaid's original code. I just changed how the error ID and syndrome bits are implemented. Also swapped out some camelcase variable names] Signed-off-by: Zaid Alali Co-developed-by: Tony Luck Signed-off-by: Tony Luck --- drivers/acpi/apei/einj-core.c | 56 ++++++++++++++++++++++++++++------- 1 file changed, 45 insertions(+), 11 deletions(-) diff --git a/drivers/acpi/apei/einj-core.c b/drivers/acpi/apei/einj-core.c index 2f46f1ace67e..3b62dce5acb5 100644 --- a/drivers/acpi/apei/einj-core.c +++ b/drivers/acpi/apei/einj-core.c @@ -87,6 +87,7 @@ enum { SETWA_FLAGS_APICID =3D 1, SETWA_FLAGS_MEM =3D 2, SETWA_FLAGS_PCIE_SBDF =3D 4, + SETWA_FLAGS_EINJV2 =3D 8, }; =20 /* @@ -180,6 +181,7 @@ bool einj_initialized __ro_after_init; =20 static void __iomem *einj_param; static u32 v5param_size; +static bool is_v2; =20 static void einj_exec_ctx_init(struct apei_exec_context *ctx) { @@ -506,12 +508,20 @@ static int __einj_error_trigger(u64 trigger_paddr, u3= 2 type, return rc; } =20 +static bool is_end_of_list(u8 *val) +{ + for (int i =3D 0; i < COMPONENT_LEN; ++i) { + if (val[i] !=3D 0xFF) + return false; + } + return true; +} static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, u64 param3, u64 param4) { struct apei_exec_context ctx; u64 val, trigger_paddr, timeout =3D FIRMWARE_TIMEOUT; - int rc; + int i, rc; =20 einj_exec_ctx_init(&ctx); =20 @@ -520,10 +530,10 @@ static int __einj_error_inject(u32 type, u32 flags, u= 64 param1, u64 param2, return rc; apei_exec_ctx_set_input(&ctx, type); if (acpi5) { - struct set_error_type_with_address *v5param, v5_struct; + struct set_error_type_with_address *v5param; =20 - v5param =3D &v5_struct; - memcpy_fromio(v5param, einj_param, sizeof(*v5param)); + v5param =3D kmalloc(v5param_size, GFP_KERNEL); + memcpy_fromio(v5param, einj_param, v5param_size); v5param->type =3D type; if (type & ACPI5_VENDOR_BIT) { switch (vendor_flags) { @@ -543,8 +553,21 @@ static int __einj_error_inject(u32 type, u32 flags, u6= 4 param1, u64 param2, v5param->flags =3D flags; v5param->memory_address =3D param1; v5param->memory_address_range =3D param2; - v5param->apicid =3D param3; - v5param->pcie_sbdf =3D param4; + + if (is_v2) { + for (i =3D 0; i < max_nr_components; i++) { + if (is_end_of_list(syndrome_data[i].comp_id.acpi_id)) + break; + v5param->einjv2_struct.component_arr[i].comp_id =3D + syndrome_data[i].comp_id; + v5param->einjv2_struct.component_arr[i].comp_synd =3D + syndrome_data[i].comp_synd; + } + v5param->einjv2_struct.component_arr_count =3D i; + } else { + v5param->apicid =3D param3; + v5param->pcie_sbdf =3D param4; + } } else { switch (type) { case ACPI_EINJ_PROCESSOR_CORRECTABLE: @@ -568,7 +591,8 @@ static int __einj_error_inject(u32 type, u32 flags, u64= param1, u64 param2, break; } } - memcpy_toio(einj_param, v5param, sizeof(*v5param)); + memcpy_toio(einj_param, v5param, v5param_size); + kfree(v5param); } else { rc =3D apei_exec_run(&ctx, ACPI_EINJ_SET_ERROR_TYPE); if (rc) @@ -630,10 +654,15 @@ int einj_error_inject(u32 type, u32 flags, u64 param1= , u64 param2, u64 param3, u64 base_addr, size; =20 /* If user manually set "flags", make sure it is legal */ - if (flags && (flags & - ~(SETWA_FLAGS_APICID|SETWA_FLAGS_MEM|SETWA_FLAGS_PCIE_SBDF))) + if (flags && (flags & ~(SETWA_FLAGS_APICID | SETWA_FLAGS_MEM | + SETWA_FLAGS_PCIE_SBDF | SETWA_FLAGS_EINJV2))) return -EINVAL; =20 + /* check if type is a valid EINJv2 error type */ + if (is_v2) { + if (!(type & available_error_type_v2)) + return -EINVAL; + } /* * We need extra sanity checks for memory errors. * Other types leap directly to injection. @@ -742,7 +771,7 @@ static int available_error_type_show(struct seq_file *m= , void *v) if (available_error_type & einj_error_type_string[pos].mask) seq_printf(m, "0x%08x\t%s\n", einj_error_type_string[pos].mask, einj_error_type_string[pos].str); - if (available_error_type & ACPI65_EINJV2_SUPP) { + if ((available_error_type & ACPI65_EINJV2_SUPP) && einj_v2_enabled) { for (int pos =3D 0; pos < ARRAY_SIZE(einjv2_error_type_string); pos++) { if (available_error_type_v2 & einjv2_error_type_string[pos].mask) seq_printf(m, "V2_0x%08x\t%s\n", einjv2_error_type_string[pos].mask, @@ -784,7 +813,7 @@ int einj_validate_error_type(u64 type) if (tval & (tval - 1)) return -EINVAL; if (!vendor) - if (!(type & available_error_type)) + if (!(type & (available_error_type | available_error_type_v2))) return -EINVAL; =20 return 0; @@ -803,9 +832,11 @@ static ssize_t error_type_set(struct file *file, const= char __user *buf, if (strncmp(einj_buf, "V2_", 3) =3D=3D 0) { if (!sscanf(einj_buf, "V2_%llx", &val)) return -EINVAL; + is_v2 =3D true; } else { if (!sscanf(einj_buf, "%llx", &val)) return -EINVAL; + is_v2 =3D false; } =20 rc =3D einj_validate_error_type(val); @@ -827,6 +858,9 @@ static int error_inject_set(void *data, u64 val) if (!error_type) return -EINVAL; =20 + if (is_v2) + error_flags |=3D SETWA_FLAGS_EINJV2; + return einj_error_inject(error_type, error_flags, error_param1, error_par= am2, error_param3, error_param4); } --=20 2.43.0