LXR linux/drivers/net/ethernet/qualcomm/qca

   1/*
   2 *   Copyright (c) 2011, 2012, Qualcomm Atheros Communications Inc.
   3 *   Copyright (c) 2014, I2SE GmbH
   4 *
   5 *   Permission to use, copy, modify, and/or distribute this software
   6 *   for any purpose with or without fee is hereby granted, provided
   7 *   that the above copyright notice and this permission notice appear
   8 *   in all copies.
   9 *
  10 *   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
  11 *   WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
  12 *   WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
  13 *   THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
  14 *   CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  15 *   LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
  16 *   NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  17 *   CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  18 */
  19
  20/*   Qualcomm Atheros SPI register definition.
  21 *
  22 *   This module is designed to define the Qualcomm Atheros SPI register
  23 *   placeholders;
  24 */
  25
  26#ifndef _QCA_SPI_H
  27#define _QCA_SPI_H
  28
  29#include <linux/netdevice.h>
  30#include <linux/sched.h>
  31#include <linux/skbuff.h>
  32#include <linux/spi/spi.h>
  33#include <linux/types.h>
  34
  35#include "qca_7k_common.h"
  36
  37#define QCASPI_DRV_VERSION "0.2.7-i"
  38#define QCASPI_DRV_NAME    "qcaspi"
  39
  40#define QCASPI_GOOD_SIGNATURE 0xAA55
  41
  42#define TX_RING_MAX_LEN 10
  43#define TX_RING_MIN_LEN 2
  44
  45/* sync related constants */
  46#define QCASPI_SYNC_UNKNOWN 0
  47#define QCASPI_SYNC_RESET   1
  48#define QCASPI_SYNC_READY   2
  49
  50#define QCASPI_RESET_TIMEOUT 10
  51
  52/* sync events */
  53#define QCASPI_EVENT_UPDATE 0
  54#define QCASPI_EVENT_CPUON  1
  55
  56struct tx_ring {
  57        struct sk_buff *skb[TX_RING_MAX_LEN];
  58        u16 head;
  59        u16 tail;
  60        u16 size;
  61        u16 count;
  62};
  63
  64struct qcaspi_stats {
  65        u64 trig_reset;
  66        u64 device_reset;
  67        u64 reset_timeout;
  68        u64 read_err;
  69        u64 write_err;
  70        u64 read_buf_err;
  71        u64 write_buf_err;
  72        u64 out_of_mem;
  73        u64 write_buf_miss;
  74        u64 ring_full;
  75        u64 spi_err;
  76        u64 write_verify_failed;
  77        u64 buf_avail_err;
  78        u64 bad_signature;
  79};
  80
  81struct qcaspi {
  82        struct net_device *net_dev;
  83        struct spi_device *spi_dev;
  84        struct task_struct *spi_thread;
  85
  86        struct tx_ring txr;
  87        struct qcaspi_stats stats;
  88
  89        u8 *rx_buffer;
  90        u32 buffer_size;
  91        u8 sync;
  92
  93        struct qcafrm_handle frm_handle;
  94        struct sk_buff *rx_skb;
  95
  96        unsigned int intr_req;
  97        unsigned int intr_svc;
  98        u16 reset_count;
  99
 100#ifdef CONFIG_DEBUG_FS
 101        struct dentry *device_root;
 102#endif
 103
 104        /* user configurable options */
 105        u32 clkspeed;
 106        u8 legacy_mode;
 107        u16 burst_len;
 108};
 109
 110#endif /* _QCA_SPI_H */
 111