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Release 4.11 drivers/net/ethernet/cavium/liquidio/octeon_main.h

/**********************************************************************
 * Author: Cavium, Inc.
 *
 * Contact: support@cavium.com
 *          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(v) ((long long)(v))
#elif BITS_PER_LONG == 64

#define CVM_CAST64(v) ((long long)(long)(v))
#else
#error "Unknown system architecture"
#endif


#define DRV_NAME "LiquidIO"

/** 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 {
	/** Bytes 1-8.  Pointer to network device private structure. */
	
struct lio *lio;

	/** Bytes 9-16.  Pointer to sk_buff. */
	
struct sk_buff *skb;

	/** Bytes 17-24.  Pointer to gather list. */
	
struct octnic_gather *g;

	/** Bytes 25-32. Physical address of skb->data or gather list. */
	
u64 dptr;

	/** Bytes 33-47. Piggybacked soft command, if any */
	
struct octeon_soft_command *sc;
};

/* BQL-related functions */
void 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);
/** Swap 8B blocks */

static inline void octeon_swap_8B_data(u64 *data, u32 blocks) { while (blocks) { cpu_to_be64s(data); blocks--; data++; } }

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/** * \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) { dev_dbg(&oct->pci_dev->dev, "Freeing PCI mapped regions for Bar%d\n", baridx); if (oct->mmio[baridx].done) iounmap(oct->mmio[baridx].hw_addr); if (oct->mmio[baridx].start) pci_release_region(oct->pci_dev, baridx * 2); }

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/** * \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) { u32 mapped_len = 0; if (pci_request_region(oct->pci_dev, baridx * 2, DRV_NAME)) { dev_err(&oct->pci_dev->dev, "pci_request_region failed for bar %d\n", baridx); return 1; } oct->mmio[baridx].start = pci_resource_start(oct->pci_dev, baridx * 2); oct->mmio[baridx].len = pci_resource_len(oct->pci_dev, baridx * 2); mapped_len = oct->mmio[baridx].len; if (!mapped_len) goto err_release_region; if (max_map_len && (mapped_len > max_map_len)) mapped_len = max_map_len; oct->mmio[baridx].hw_addr = ioremap(oct->mmio[baridx].start, mapped_len); oct->mmio[baridx].mapped_len = mapped_len; dev_dbg(&oct->pci_dev->dev, "BAR%d start: 0x%llx mapped %u of %u bytes\n", baridx, oct->mmio[baridx].start, mapped_len, oct->mmio[baridx].len); if (!oct->mmio[baridx].hw_addr) { dev_err(&oct->pci_dev->dev, "error ioremap for bar %d\n", baridx); goto err_release_region; } oct->mmio[baridx].done = 1; return 0; err_release_region: pci_release_region(oct->pci_dev, baridx * 2); return 1; }

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static inline int sleep_cond(wait_queue_head_t *wait_queue, int *condition) { int errno = 0; wait_queue_t we; init_waitqueue_entry(&we, current); add_wait_queue(wait_queue, &we); while (!(READ_ONCE(*condition))) { set_current_state(TASK_INTERRUPTIBLE); if (signal_pending(current)) { errno = -EINTR; goto out; } schedule(); } out: set_current_state(TASK_RUNNING); remove_wait_queue(wait_queue, &we); return errno; }

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/* Gives up the CPU for a timeout period. * Check that the condition is not true before we go to sleep for a * timeout period. */
static inline void sleep_timeout_cond(wait_queue_head_t *wait_queue, int *condition, int timeout) { wait_queue_t we; init_waitqueue_entry(&we, current); add_wait_queue(wait_queue, &we); set_current_state(TASK_INTERRUPTIBLE); if (!(*condition)) schedule_timeout(timeout); set_current_state(TASK_RUNNING); remove_wait_queue(wait_queue, &we); }

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#ifndef ROUNDUP4 #define ROUNDUP4(val) (((val) + 3) & 0xfffffffc) #endif #ifndef ROUNDUP8 #define ROUNDUP8(val) (((val) + 7) & 0xfffffff8) #endif #ifndef ROUNDUP16 #define ROUNDUP16(val) (((val) + 15) & 0xfffffff0) #endif #ifndef ROUNDUP128 #define ROUNDUP128(val) (((val) + 127) & 0xffffff80) #endif #endif /* _OCTEON_MAIN_H_ */

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