1/*
2 * Copyright (c) 2013 Johannes Berg <johannes@sipsolutions.net>
3 *
4 *  This file is free software: you may copy, redistribute and/or modify it
5 *  under the terms of the GNU General Public License as published by the
6 *  Free Software Foundation, either version 2 of the License, or (at your
7 *  option) any later version.
8 *
9 *  This file is distributed in the hope that it will be useful, but
10 *  WITHOUT ANY WARRANTY; without even the implied warranty of
11 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 *  General Public License for more details.
13 *
14 *  You should have received a copy of the GNU General Public License
15 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
16 *
17 * This file incorporates work covered by the following copyright and
18 * permission notice:
19 *
20 * Copyright (c) 2012 Qualcomm Atheros, Inc.
21 *
22 * Permission to use, copy, modify, and/or distribute this software for any
23 * purpose with or without fee is hereby granted, provided that the above
24 * copyright notice and this permission notice appear in all copies.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
27 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
28 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
29 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
30 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
31 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
32 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
33 */
34
35#ifndef _ALX_H_
36#define _ALX_H_
37
38#include <linux/types.h>
39#include <linux/etherdevice.h>
40#include <linux/dma-mapping.h>
41#include <linux/spinlock.h>
42#include "hw.h"
43
44#define ALX_WATCHDOG_TIME   (5 * HZ)
45
46struct alx_buffer {
47	struct sk_buff *skb;
48	DEFINE_DMA_UNMAP_ADDR(dma);
49	DEFINE_DMA_UNMAP_LEN(size);
50};
51
52struct alx_rx_queue {
53	struct alx_rrd *rrd;
54	dma_addr_t rrd_dma;
55
56	struct alx_rfd *rfd;
57	dma_addr_t rfd_dma;
58
59	struct alx_buffer *bufs;
60
61	u16 write_idx, read_idx;
62	u16 rrd_read_idx;
63};
64#define ALX_RX_ALLOC_THRESH	32
65
66struct alx_tx_queue {
67	struct alx_txd *tpd;
68	dma_addr_t tpd_dma;
69	struct alx_buffer *bufs;
70	u16 write_idx, read_idx;
71};
72
73#define ALX_DEFAULT_TX_WORK 128
74
75enum alx_device_quirks {
76	ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG = BIT(0),
77};
78
79struct alx_priv {
80	struct net_device *dev;
81
82	struct alx_hw hw;
83
84	/* all descriptor memory */
85	struct {
86		dma_addr_t dma;
87		void *virt;
88		unsigned int size;
89	} descmem;
90
91	/* protect int_mask updates */
92	spinlock_t irq_lock;
93	u32 int_mask;
94
95	unsigned int tx_ringsz;
96	unsigned int rx_ringsz;
97	unsigned int rxbuf_size;
98
99	struct napi_struct napi;
100	struct alx_tx_queue txq;
101	struct alx_rx_queue rxq;
102
103	struct work_struct link_check_wk;
104	struct work_struct reset_wk;
105
106	u16 msg_enable;
107
108	bool msi;
109
110	/* protects hw.stats */
111	spinlock_t stats_lock;
112};
113
114extern const struct ethtool_ops alx_ethtool_ops;
115extern const char alx_drv_name[];
116
117#endif
118