/* * pcie_aer.h * * Copyright (c) 2010 Isaku Yamahata * 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 . */ #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 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, uint8_t cap_ver, uint16_t offset, uint16_t size, Error **errp); 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); void pcie_aer_msg(PCIDevice *dev, const PCIEAERMsg *msg); #endif /* QEMU_PCIE_AER_H */