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-rw-r--r--src/include/hw/pci/pcie_aer.h106
1 files changed, 106 insertions, 0 deletions
diff --git a/src/include/hw/pci/pcie_aer.h b/src/include/hw/pci/pcie_aer.h
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+++ b/src/include/hw/pci/pcie_aer.h
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+/*
+ * pcie_aer.h
+ *
+ * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef QEMU_PCIE_AER_H
+#define QEMU_PCIE_AER_H
+
+#include "hw/hw.h"
+
+/* definitions which PCIExpressDevice uses */
+
+/* AER log */
+struct PCIEAERLog {
+ /* This structure is saved/loaded.
+ So explicitly size them instead of unsigned int */
+
+ /* the number of currently recorded log in log member */
+ uint16_t log_num;
+
+ /*
+ * The maximum number of the log. Errors can be logged up to this.
+ *
+ * This is configurable property.
+ * The specified value will be clipped down to PCIE_AER_LOG_MAX_LIMIT
+ * to avoid unreasonable memory usage.
+ * I bet that 128 log size would be big enough, otherwise too many errors
+ * for system to function normaly. But could consecutive errors occur?
+ */
+#define PCIE_AER_LOG_MAX_DEFAULT 8
+#define PCIE_AER_LOG_MAX_LIMIT 128
+#define PCIE_AER_LOG_MAX_UNSET 0xffff
+ uint16_t log_max;
+
+ /* Error log. log_max-sized array */
+ PCIEAERErr *log;
+};
+
+/* aer error message: error signaling message has only error severity and
+ source id. See 2.2.8.3 error signaling messages */
+struct PCIEAERMsg {
+ /*
+ * PCI_ERR_ROOT_CMD_{COR, NONFATAL, FATAL}_EN
+ * = PCI_EXP_DEVCTL_{CERE, NFERE, FERE}
+ */
+ uint32_t severity;
+
+ uint16_t source_id; /* bdf */
+};
+
+static inline bool
+pcie_aer_msg_is_uncor(const PCIEAERMsg *msg)
+{
+ return msg->severity == PCI_ERR_ROOT_CMD_NONFATAL_EN ||
+ msg->severity == PCI_ERR_ROOT_CMD_FATAL_EN;
+}
+
+/* error */
+struct PCIEAERErr {
+ uint32_t status; /* error status bits */
+ uint16_t source_id; /* bdf */
+
+#define PCIE_AER_ERR_IS_CORRECTABLE 0x1 /* correctable/uncorrectable */
+#define PCIE_AER_ERR_MAYBE_ADVISORY 0x2 /* maybe advisory non-fatal */
+#define PCIE_AER_ERR_HEADER_VALID 0x4 /* TLP header is logged */
+#define PCIE_AER_ERR_TLP_PREFIX_PRESENT 0x8 /* TLP Prefix is logged */
+ uint16_t flags;
+
+ uint32_t header[4]; /* TLP header */
+ uint32_t prefix[4]; /* TLP header prefix */
+};
+
+extern const VMStateDescription vmstate_pcie_aer_log;
+
+int pcie_aer_init(PCIDevice *dev, uint16_t offset);
+void pcie_aer_exit(PCIDevice *dev);
+void pcie_aer_write_config(PCIDevice *dev,
+ uint32_t addr, uint32_t val, int len);
+
+/* aer root port */
+void pcie_aer_root_set_vector(PCIDevice *dev, unsigned int vector);
+void pcie_aer_root_init(PCIDevice *dev);
+void pcie_aer_root_reset(PCIDevice *dev);
+void pcie_aer_root_write_config(PCIDevice *dev,
+ uint32_t addr, uint32_t val, int len,
+ uint32_t root_cmd_prev);
+
+/* error injection */
+int pcie_aer_inject_error(PCIDevice *dev, const PCIEAERErr *err);
+
+#endif /* QEMU_PCIE_AER_H */
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