/********************************************************************** * Author: Cavium, Inc. * * Contact: [email protected] * Please include "LiquidIO" in the subject. * * Copyright (c) 2003-2016 Cavium, Inc. * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, Version 2, as * published by the Free Software Foundation. * * This file is distributed in the hope that it will be useful, but * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or * NONINFRINGEMENT. See the GNU General Public License for more details. ***********************************************************************/ /*! \file octeon_main.h * \brief Host Driver: This file is included by all host driver source files * to include common definitions. */ #ifndef _OCTEON_MAIN_H_ #define _OCTEON_MAIN_H_ #include <linux/sched/signal.h> #if BITS_PER_LONG == 32 #define CVM_CAST64 … #elif BITS_PER_LONG == 64 #define CVM_CAST64(v) … #else #error "Unknown system architecture" #endif #define DRV_NAME … struct octeon_device_priv { … }; /** This structure is used by NIC driver to store information required * to free the sk_buff when the packet has been fetched by Octeon. * Bytes offset below assume worst-case of a 64-bit system. */ struct octnet_buf_free_info { … }; /* BQL-related functions */ int octeon_report_sent_bytes_to_bql(void *buf, int reqtype); void octeon_update_tx_completion_counters(void *buf, int reqtype, unsigned int *pkts_compl, unsigned int *bytes_compl); void octeon_report_tx_completion_to_bql(void *txq, unsigned int pkts_compl, unsigned int bytes_compl); void octeon_pf_changed_vf_macaddr(struct octeon_device *oct, u8 *mac); void octeon_schedule_rxq_oom_work(struct octeon_device *oct, struct octeon_droq *droq); /** Swap 8B blocks */ static inline void octeon_swap_8B_data(u64 *data, u32 blocks) { … } /** * \brief unmaps a PCI BAR * @param oct Pointer to Octeon device * @param baridx bar index */ static inline void octeon_unmap_pci_barx(struct octeon_device *oct, int baridx) { … } /** * \brief maps a PCI BAR * @param oct Pointer to Octeon device * @param baridx bar index * @param max_map_len maximum length of mapped memory */ static inline int octeon_map_pci_barx(struct octeon_device *oct, int baridx, int max_map_len) { … } /* input parameter: * sc: pointer to a soft request * timeout: milli sec which an application wants to wait for the response of the request. * 0: the request will wait until its response gets back * from the firmware within LIO_SC_MAX_TMO_MS milli sec. * It the response does not return within * LIO_SC_MAX_TMO_MS milli sec, lio_process_ordered_list() * will move the request to zombie response list. * * return value: * 0: got the response from firmware for the sc request. * errno -EINTR: user abort the command. * errno -ETIME: user spefified timeout value has been expired. * errno -EBUSY: the response of the request does not return in * resonable time (LIO_SC_MAX_TMO_MS). * the sc wll be move to zombie response list by * lio_process_ordered_list() * * A request with non-zero return value, the sc->caller_is_done * will be marked 1. * When getting a request with zero return value, the requestor * should mark sc->caller_is_done with 1 after examing the * response of sc. * lio_process_ordered_list() will free the soft command on behalf * of the soft command requestor. * This is to fix the possible race condition of both timeout process * and lio_process_ordered_list()/callback function to free a * sc strucutre. */ static inline int wait_for_sc_completion_timeout(struct octeon_device *oct_dev, struct octeon_soft_command *sc, unsigned long timeout) { … } #ifndef ROUNDUP4 #define ROUNDUP4(val) … #endif #ifndef ROUNDUP8 #define ROUNDUP8(val) … #endif #ifndef ROUNDUP16 #define ROUNDUP16(val) … #endif #ifndef ROUNDUP128 #define ROUNDUP128(val) … #endif #endif /* _OCTEON_MAIN_H_ */
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