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/*
* Copyright (c) 2011, 2012, Qualcomm Atheros Communications Inc.
* Copyright (c) 2014, I2SE GmbH
*
* Permission to use, copy, modify, and/or distribute this software
* for any purpose with or without fee is hereby granted, provided
* that the above copyright notice and this permission notice appear
* in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* Qualcomm Atheros SPI register definition.
*
* This module is designed to define the Qualcomm Atheros SPI register
* placeholders;
*/
#ifndef _QCA_SPI_H
#define _QCA_SPI_H
#include <linux/netdevice.h>
#include <linux/sched.h>
#include <linux/skbuff.h>
#include <linux/spi/spi.h>
#include <linux/types.h>
#include "qca_framing.h"
#define QCASPI_DRV_VERSION "0.2.7-i"
#define QCASPI_DRV_NAME "qcaspi"
#define QCASPI_GOOD_SIGNATURE 0xAA55
#define TX_RING_MAX_LEN 10
#define TX_RING_MIN_LEN 2
/* sync related constants */
#define QCASPI_SYNC_UNKNOWN 0
#define QCASPI_SYNC_RESET 1
#define QCASPI_SYNC_READY 2
#define QCASPI_RESET_TIMEOUT 10
/* sync events */
#define QCASPI_EVENT_UPDATE 0
#define QCASPI_EVENT_CPUON 1
struct tx_ring {
struct sk_buff *skb[TX_RING_MAX_LEN];
u16 head;
u16 tail;
u16 size;
u16 count;
};
struct qcaspi_stats {
u64 trig_reset;
u64 device_reset;
u64 reset_timeout;
u64 read_err;
u64 write_err;
u64 read_buf_err;
u64 write_buf_err;
u64 out_of_mem;
u64 write_buf_miss;
u64 ring_full;
u64 spi_err;
};
struct qcaspi {
struct net_device *net_dev;
struct spi_device *spi_dev;
struct task_struct *spi_thread;
struct tx_ring txr;
struct qcaspi_stats stats;
struct spi_message spi_msg1;
struct spi_message spi_msg2;
struct spi_transfer spi_xfer1;
struct spi_transfer spi_xfer2[2];
u8 *rx_buffer;
u32 buffer_size;
u8 sync;
struct qcafrm_handle frm_handle;
struct sk_buff *rx_skb;
unsigned int intr_req;
unsigned int intr_svc;
#ifdef CONFIG_DEBUG_FS
struct dentry *device_root;
#endif
/* user configurable options */
u32 clkspeed;
u8 legacy_mode;
u16 burst_len;
};
int qcaspi_netdev_open(struct net_device *dev);
int qcaspi_netdev_close(struct net_device *dev);
#endif /* _QCA_SPI_H */
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