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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
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 */
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