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594d57d0 MK |
1 | /* |
2 | * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net> | |
3 | * | |
4 | * Copyright (C) 2004, 2005 | |
5 | * Cory T. Tusar, Videon Central, Inc., <ctusar@videon-central.com> | |
6 | * | |
1a459660 | 7 | * SPDX-License-Identifier: GPL-2.0+ |
594d57d0 MK |
8 | */ |
9 | ||
10 | #ifndef _EP93XX_ETH_H | |
11 | #define _EP93XX_ETH_H | |
12 | ||
13 | #include <net.h> | |
14 | ||
15 | /** | |
16 | * #define this to dump device status and queue info during initialization and | |
17 | * following errors. | |
18 | */ | |
19 | #undef EP93XX_MAC_DEBUG | |
20 | ||
21 | /** | |
22 | * Number of descriptor and status entries in our RX queues. | |
23 | * It must be power of 2 ! | |
24 | */ | |
25 | #define NUMRXDESC PKTBUFSRX | |
26 | ||
27 | /** | |
28 | * Number of descriptor and status entries in our TX queues. | |
29 | */ | |
30 | #define NUMTXDESC 1 | |
31 | ||
32 | /** | |
33 | * 944 = (1024 - 64) - 16, Fifo size - Minframesize - 16 (Chip FACT) | |
34 | */ | |
35 | #define TXSTARTMAX 944 | |
36 | ||
37 | /** | |
38 | * Receive descriptor queue entry | |
39 | */ | |
40 | struct rx_descriptor { | |
41 | uint32_t word1; | |
42 | uint32_t word2; | |
43 | }; | |
44 | ||
45 | /** | |
46 | * Receive status queue entry | |
47 | */ | |
48 | struct rx_status { | |
49 | uint32_t word1; | |
50 | uint32_t word2; | |
51 | }; | |
52 | ||
53 | #define RX_STATUS_RWE(rx_status) ((rx_status->word1 >> 30) & 0x01) | |
54 | #define RX_STATUS_RFP(rx_status) ((rx_status->word1 >> 31) & 0x01) | |
55 | #define RX_STATUS_FRAME_LEN(rx_status) (rx_status->word2 & 0xFFFF) | |
56 | ||
57 | /** | |
58 | * Transmit descriptor queue entry | |
59 | */ | |
60 | struct tx_descriptor { | |
61 | uint32_t word1; | |
62 | uint32_t word2; | |
63 | }; | |
64 | ||
65 | #define TX_DESC_EOF (1 << 31) | |
66 | ||
67 | /** | |
68 | * Transmit status queue entry | |
69 | */ | |
70 | struct tx_status { | |
71 | uint32_t word1; | |
72 | }; | |
73 | ||
74 | #define TX_STATUS_TXWE(tx_status) (((tx_status)->word1 >> 30) & 0x01) | |
75 | #define TX_STATUS_TXFP(tx_status) (((tx_status)->word1 >> 31) & 0x01) | |
76 | ||
77 | /** | |
78 | * Transmit descriptor queue | |
79 | */ | |
80 | struct tx_descriptor_queue { | |
81 | struct tx_descriptor *base; | |
82 | struct tx_descriptor *current; | |
83 | struct tx_descriptor *end; | |
84 | }; | |
85 | ||
86 | /** | |
87 | * Transmit status queue | |
88 | */ | |
89 | struct tx_status_queue { | |
90 | struct tx_status *base; | |
91 | volatile struct tx_status *current; | |
92 | struct tx_status *end; | |
93 | }; | |
94 | ||
95 | /** | |
96 | * Receive descriptor queue | |
97 | */ | |
98 | struct rx_descriptor_queue { | |
99 | struct rx_descriptor *base; | |
100 | struct rx_descriptor *current; | |
101 | struct rx_descriptor *end; | |
102 | }; | |
103 | ||
104 | /** | |
105 | * Receive status queue | |
106 | */ | |
107 | struct rx_status_queue { | |
108 | struct rx_status *base; | |
109 | volatile struct rx_status *current; | |
110 | struct rx_status *end; | |
111 | }; | |
112 | ||
113 | /** | |
114 | * EP93xx MAC private data structure | |
115 | */ | |
116 | struct ep93xx_priv { | |
117 | struct rx_descriptor_queue rx_dq; | |
118 | struct rx_status_queue rx_sq; | |
119 | void *rx_buffer[NUMRXDESC]; | |
120 | ||
121 | struct tx_descriptor_queue tx_dq; | |
122 | struct tx_status_queue tx_sq; | |
123 | ||
124 | struct mac_regs *regs; | |
125 | }; | |
126 | ||
127 | #endif |