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/*
* Copyright (c) 2013 Johannes Berg <johannes@sipsolutions.net>
*
* This file is free software: you may copy, redistribute and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 2 of the License, or (at your
* option) any later version.
*
* This file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright (c) 2012 Qualcomm Atheros, Inc.
*
* 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.
*/
#ifndef _ALX_H_
#define _ALX_H_
#include <linux/types.h>
#include <linux/etherdevice.h>
#include <linux/dma-mapping.h>
#include <linux/spinlock.h>
#include "hw.h"
#define ALX_WATCHDOG_TIME (5 * HZ)
struct alx_buffer {
struct sk_buff *skb;
DEFINE_DMA_UNMAP_ADDR(dma);
DEFINE_DMA_UNMAP_LEN(size);
};
struct alx_rx_queue {
struct net_device *netdev;
struct device *dev;
struct alx_napi *np;
struct alx_rrd *rrd;
dma_addr_t rrd_dma;
struct alx_rfd *rfd;
dma_addr_t rfd_dma;
struct alx_buffer *bufs;
u16 count;
u16 write_idx, read_idx;
u16 rrd_read_idx;
u16 queue_idx;
};
#define ALX_RX_ALLOC_THRESH 32
struct alx_tx_queue {
struct net_device *netdev;
struct device *dev;
struct alx_txd *tpd;
dma_addr_t tpd_dma;
struct alx_buffer *bufs;
u16 count;
u16 write_idx, read_idx;
u16 queue_idx;
u16 p_reg, c_reg;
};
#define ALX_DEFAULT_TX_WORK 128
enum alx_device_quirks {
ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG = BIT(0),
};
struct alx_napi {
struct napi_struct napi;
struct alx_priv *alx;
struct alx_rx_queue *rxq;
struct alx_tx_queue *txq;
int vec_idx;
u32 vec_mask;
char irq_lbl[IFNAMSIZ + 8];
};
#define ALX_MAX_NAPIS 8
#define ALX_FLAG_USING_MSIX BIT(0)
#define ALX_FLAG_USING_MSI BIT(1)
struct alx_priv {
struct net_device *dev;
struct alx_hw hw;
/* msi-x vectors */
int num_vec;
struct msix_entry *msix_entries;
/* all descriptor memory */
struct {
dma_addr_t dma;
void *virt;
unsigned int size;
} descmem;
struct alx_napi *qnapi[ALX_MAX_NAPIS];
int num_txq;
int num_rxq;
int num_napi;
/* protect int_mask updates */
spinlock_t irq_lock;
u32 int_mask;
unsigned int tx_ringsz;
unsigned int rx_ringsz;
unsigned int rxbuf_size;
struct work_struct link_check_wk;
struct work_struct reset_wk;
u16 msg_enable;
int flags;
/* protects hw.stats */
spinlock_t stats_lock;
};
extern const struct ethtool_ops alx_ethtool_ops;
extern const char alx_drv_name[];
#endif
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