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 net_device *netdev;
54	struct device *dev;
55	struct alx_napi *np;
56
57	struct alx_rrd *rrd;
58	dma_addr_t rrd_dma;
59
60	struct alx_rfd *rfd;
61	dma_addr_t rfd_dma;
62
63	struct alx_buffer *bufs;
64
65	u16 count;
66	u16 write_idx, read_idx;
67	u16 rrd_read_idx;
68	u16 queue_idx;
69};
70#define ALX_RX_ALLOC_THRESH	32
71
72struct alx_tx_queue {
73	struct net_device *netdev;
74	struct device *dev;
75
76	struct alx_txd *tpd;
77	dma_addr_t tpd_dma;
78
79	struct alx_buffer *bufs;
80
81	u16 count;
82	u16 write_idx, read_idx;
83	u16 queue_idx;
84	u16 p_reg, c_reg;
85};
86
87#define ALX_DEFAULT_TX_WORK 128
88
89enum alx_device_quirks {
90	ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG = BIT(0),
91};
92
93struct alx_napi {
94	struct napi_struct	napi;
95	struct alx_priv		*alx;
96	struct alx_rx_queue	*rxq;
97	struct alx_tx_queue	*txq;
98	int			vec_idx;
99	u32			vec_mask;
100	char			irq_lbl[IFNAMSIZ + 8];
101};
102
103#define ALX_MAX_NAPIS 8
104
105struct alx_priv {
106	struct net_device *dev;
107
108	struct alx_hw hw;
109
110	/* msi-x vectors */
111	int num_vec;
112
113	/* all descriptor memory */
114	struct {
115		dma_addr_t dma;
116		void *virt;
117		unsigned int size;
118	} descmem;
119
120	struct alx_napi *qnapi[ALX_MAX_NAPIS];
121	int num_txq;
122	int num_rxq;
123	int num_napi;
124
125	/* protect int_mask updates */
126	spinlock_t irq_lock;
127	u32 int_mask;
128
129	unsigned int tx_ringsz;
130	unsigned int rx_ringsz;
131	unsigned int rxbuf_size;
132
133	struct work_struct link_check_wk;
134	struct work_struct reset_wk;
135
136	u16 msg_enable;
137
138	/* protects hw.stats */
139	spinlock_t stats_lock;
140
141	struct mutex mtx;
142};
143
144extern const struct ethtool_ops alx_ethtool_ops;
145
146#endif
147