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// SPDX-License-Identifier: GPL-2.0-only
// Copyright(c) 2025 Intel Corporation. All rights reserved
#include <linux/printk.h>
#include <linux/aer.h>
#include <cxl/event.h>
int cxl_cper_sec_prot_err_valid(struct cxl_cper_sec_prot_err *prot_err)
{
if (!(prot_err->valid_bits & PROT_ERR_VALID_AGENT_ADDRESS)) {
pr_err_ratelimited("CXL CPER invalid agent type\n");
return -EINVAL;
}
if (!(prot_err->valid_bits & PROT_ERR_VALID_ERROR_LOG)) {
pr_err_ratelimited("CXL CPER invalid protocol error log\n");
return -EINVAL;
}
if (prot_err->err_len != sizeof(struct cxl_ras_capability_regs)) {
pr_err_ratelimited("CXL CPER invalid RAS Cap size (%u)\n",
prot_err->err_len);
return -EINVAL;
}
if ((prot_err->agent_type == RCD || prot_err->agent_type == DEVICE ||
prot_err->agent_type == LD || prot_err->agent_type == FMLD) &&
!(prot_err->valid_bits & PROT_ERR_VALID_SERIAL_NUMBER))
pr_warn_ratelimited(FW_WARN
"CXL CPER no device serial number\n");
return 0;
}
EXPORT_SYMBOL_GPL(cxl_cper_sec_prot_err_valid);
int cxl_cper_setup_prot_err_work_data(struct cxl_cper_prot_err_work_data *wd,
struct cxl_cper_sec_prot_err *prot_err,
int severity)
{
u8 *dvsec_start, *cap_start;
switch (prot_err->agent_type) {
case RCD:
case DEVICE:
case LD:
case FMLD:
case RP:
case DSP:
case USP:
memcpy(&wd->prot_err, prot_err, sizeof(wd->prot_err));
dvsec_start = (u8 *)(prot_err + 1);
cap_start = dvsec_start + prot_err->dvsec_len;
memcpy(&wd->ras_cap, cap_start, sizeof(wd->ras_cap));
wd->severity = cper_severity_to_aer(severity);
break;
default:
pr_err_ratelimited("CXL CPER invalid agent type: %d\n",
prot_err->agent_type);
return -EINVAL;
}
return 0;
}
EXPORT_SYMBOL_GPL(cxl_cper_setup_prot_err_work_data);
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