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 
46 struct alx_buffer {
47 	struct sk_buff *skb;
48 	DEFINE_DMA_UNMAP_ADDR(dma);
49 	DEFINE_DMA_UNMAP_LEN(size);
50 };
51 
52 struct 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 
66 struct 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 
75 enum alx_device_quirks {
76 	ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG = BIT(0),
77 };
78 
79 struct 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 
114 extern const struct ethtool_ops alx_ethtool_ops;
115 extern const char alx_drv_name[];
116 
117 #endif
118