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Embedded Linux Audio
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/* * Copyright (C) 2006 Intel Corp. * Tom Long Nguyen (tom.l.nguyen@intel.com) * Zhang Yanmin (yanmin.zhang@intel.com) * */ #ifndef _AERDRV_H_ #define _AERDRV_H_ #include <linux/workqueue.h> #include <linux/pcieport_if.h> #include <linux/aer.h> #include <linux/interrupt.h> #define SYSTEM_ERROR_INTR_ON_MESG_MASK (PCI_EXP_RTCTL_SECEE| \ PCI_EXP_RTCTL_SENFEE| \ PCI_EXP_RTCTL_SEFEE) #define ROOT_PORT_INTR_ON_MESG_MASK (PCI_ERR_ROOT_CMD_COR_EN| \ PCI_ERR_ROOT_CMD_NONFATAL_EN| \ PCI_ERR_ROOT_CMD_FATAL_EN) #define ERR_COR_ID(d) (d & 0xffff) #define ERR_UNCOR_ID(d) (d >> 16) #define AER_ERROR_SOURCES_MAX 100 #define AER_LOG_TLP_MASKS (PCI_ERR_UNC_POISON_TLP| \ PCI_ERR_UNC_ECRC| \ PCI_ERR_UNC_UNSUP| \ PCI_ERR_UNC_COMP_ABORT| \ PCI_ERR_UNC_UNX_COMP| \ PCI_ERR_UNC_MALF_TLP) #define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */ struct aer_err_info { struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES]; int error_dev_num; unsigned int id:16; unsigned int severity:2; /* 0:NONFATAL | 1:FATAL | 2:COR */ unsigned int __pad1:5; unsigned int multi_error_valid:1; unsigned int first_error:5; unsigned int __pad2:2; unsigned int tlp_header_valid:1; unsigned int status; /* COR/UNCOR Error Status */ unsigned int mask; /* COR/UNCOR Error Mask */ struct aer_header_log_regs tlp; /* TLP Header */ }; struct aer_err_source { unsigned int status; unsigned int id; }; struct aer_rpc { struct pcie_device *rpd; /* Root Port device */ struct work_struct dpc_handler; struct aer_err_source e_sources[AER_ERROR_SOURCES_MAX]; unsigned short prod_idx; /* Error Producer Index */ unsigned short cons_idx; /* Error Consumer Index */ int isr; spinlock_t e_lock; /* * Lock access to Error Status/ID Regs * and error producer/consumer index */ struct mutex rpc_mutex; /* * only one thread could do * recovery on the same * root port hierarchy */ wait_queue_head_t wait_release; }; struct aer_broadcast_data { enum pci_channel_state state; enum pci_ers_result result; }; static inline pci_ers_result_t merge_result(enum pci_ers_result orig, enum pci_ers_result new) { if (new == PCI_ERS_RESULT_NO_AER_DRIVER) return PCI_ERS_RESULT_NO_AER_DRIVER; if (new == PCI_ERS_RESULT_NONE) return orig; switch (orig) { case PCI_ERS_RESULT_CAN_RECOVER: case PCI_ERS_RESULT_RECOVERED: orig = new; break; case PCI_ERS_RESULT_DISCONNECT: if (new == PCI_ERS_RESULT_NEED_RESET) orig = PCI_ERS_RESULT_NEED_RESET; break; default: break; } return orig; } extern struct bus_type pcie_port_bus_type; int aer_init(struct pcie_device *dev); void aer_isr(struct work_struct *work); void aer_print_error(struct pci_dev *dev, struct aer_err_info *info); void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info); irqreturn_t aer_irq(int irq, void *context); #ifdef CONFIG_ACPI_APEI int pcie_aer_get_firmware_first(struct pci_dev *pci_dev); #else static inline int pcie_aer_get_firmware_first(struct pci_dev *pci_dev) { if (pci_dev->__aer_firmware_first_valid) return pci_dev->__aer_firmware_first; return 0; } #endif static inline void pcie_aer_force_firmware_first(struct pci_dev *pci_dev, int enable) { pci_dev->__aer_firmware_first = !!enable; pci_dev->__aer_firmware_first_valid = 1; } #endif /* _AERDRV_H_ */