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ba8af8e1f1
Make a helper out of cxl_cper_post_prot_err() that checks the CXL agent type and copy the CPER CXL protocol errors information to a work data structure. Export the new symbol for reuse by ELOG. Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Reviewed-by: Hanjun Guo <guohanjun@huawei.com> Signed-off-by: Fabio M. De Francesco <fabio.m.de.francesco@linux.intel.com> [ rjw: Subject tweak ] Link: https://patch.msgid.link/20260114101543.85926-5-fabio.m.de.francesco@linux.intel.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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// Copyright(c) 2025 Intel Corporation. All rights reserved
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#include <linux/printk.h>
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#include <linux/aer.h>
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#include <cxl/event.h>
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int cxl_cper_sec_prot_err_valid(struct cxl_cper_sec_prot_err *prot_err)
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{
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if (!(prot_err->valid_bits & PROT_ERR_VALID_AGENT_ADDRESS)) {
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pr_err_ratelimited("CXL CPER invalid agent type\n");
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return -EINVAL;
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}
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if (!(prot_err->valid_bits & PROT_ERR_VALID_ERROR_LOG)) {
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pr_err_ratelimited("CXL CPER invalid protocol error log\n");
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return -EINVAL;
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}
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if (prot_err->err_len != sizeof(struct cxl_ras_capability_regs)) {
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pr_err_ratelimited("CXL CPER invalid RAS Cap size (%u)\n",
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prot_err->err_len);
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return -EINVAL;
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}
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if ((prot_err->agent_type == RCD || prot_err->agent_type == DEVICE ||
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prot_err->agent_type == LD || prot_err->agent_type == FMLD) &&
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!(prot_err->valid_bits & PROT_ERR_VALID_SERIAL_NUMBER))
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pr_warn_ratelimited(FW_WARN
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"CXL CPER no device serial number\n");
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return 0;
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}
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EXPORT_SYMBOL_GPL(cxl_cper_sec_prot_err_valid);
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int cxl_cper_setup_prot_err_work_data(struct cxl_cper_prot_err_work_data *wd,
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struct cxl_cper_sec_prot_err *prot_err,
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int severity)
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{
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u8 *dvsec_start, *cap_start;
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switch (prot_err->agent_type) {
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case RCD:
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case DEVICE:
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case LD:
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case FMLD:
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case RP:
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case DSP:
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case USP:
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memcpy(&wd->prot_err, prot_err, sizeof(wd->prot_err));
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dvsec_start = (u8 *)(prot_err + 1);
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cap_start = dvsec_start + prot_err->dvsec_len;
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memcpy(&wd->ras_cap, cap_start, sizeof(wd->ras_cap));
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wd->severity = cper_severity_to_aer(severity);
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break;
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default:
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pr_err_ratelimited("CXL CPER invalid agent type: %d\n",
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prot_err->agent_type);
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return -EINVAL;
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(cxl_cper_setup_prot_err_work_data);
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