1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Header File to describe the DMA descriptors and related definitions specific
4  * for DesignWare databook 4.xx.
5  *
6  * Copyright (C) 2015  STMicroelectronics Ltd
7  *
8  * Author: Alexandre Torgue <alexandre.torgue@st.com>
9  */
10 
11 #ifndef __DWMAC4_DESCS_H__
12 #define __DWMAC4_DESCS_H__
13 
14 #include <linux/bitops.h>
15 
16 /* Normal transmit descriptor defines (without split feature) */
17 
18 /* TDES2 (read format) */
19 #define TDES2_BUFFER1_SIZE_MASK		GENMASK(13, 0)
20 #define TDES2_VLAN_TAG_MASK		GENMASK(15, 14)
21 #define TDES2_BUFFER2_SIZE_MASK		GENMASK(29, 16)
22 #define TDES2_BUFFER2_SIZE_MASK_SHIFT	16
23 #define TDES2_TIMESTAMP_ENABLE		BIT(30)
24 #define TDES2_INTERRUPT_ON_COMPLETION	BIT(31)
25 
26 /* TDES3 (read format) */
27 #define TDES3_PACKET_SIZE_MASK		GENMASK(14, 0)
28 #define TDES3_CHECKSUM_INSERTION_MASK	GENMASK(17, 16)
29 #define TDES3_CHECKSUM_INSERTION_SHIFT	16
30 #define TDES3_TCP_PKT_PAYLOAD_MASK	GENMASK(17, 0)
31 #define TDES3_TCP_SEGMENTATION_ENABLE	BIT(18)
32 #define TDES3_HDR_LEN_SHIFT		19
33 #define TDES3_SLOT_NUMBER_MASK		GENMASK(22, 19)
34 #define TDES3_SA_INSERT_CTRL_MASK	GENMASK(25, 23)
35 #define TDES3_CRC_PAD_CTRL_MASK		GENMASK(27, 26)
36 
37 /* TDES3 (write back format) */
38 #define TDES3_IP_HDR_ERROR		BIT(0)
39 #define TDES3_DEFERRED			BIT(1)
40 #define TDES3_UNDERFLOW_ERROR		BIT(2)
41 #define TDES3_EXCESSIVE_DEFERRAL	BIT(3)
42 #define TDES3_COLLISION_COUNT_MASK	GENMASK(7, 4)
43 #define TDES3_COLLISION_COUNT_SHIFT	4
44 #define TDES3_EXCESSIVE_COLLISION	BIT(8)
45 #define TDES3_LATE_COLLISION		BIT(9)
46 #define TDES3_NO_CARRIER		BIT(10)
47 #define TDES3_LOSS_CARRIER		BIT(11)
48 #define TDES3_PAYLOAD_ERROR		BIT(12)
49 #define TDES3_PACKET_FLUSHED		BIT(13)
50 #define TDES3_JABBER_TIMEOUT		BIT(14)
51 #define TDES3_ERROR_SUMMARY		BIT(15)
52 #define TDES3_TIMESTAMP_STATUS		BIT(17)
53 #define TDES3_TIMESTAMP_STATUS_SHIFT	17
54 
55 /* TDES3 context */
56 #define TDES3_CTXT_TCMSSV		BIT(26)
57 
58 /* TDES3 Common */
59 #define	TDES3_RS1V			BIT(26)
60 #define	TDES3_RS1V_SHIFT		26
61 #define TDES3_LAST_DESCRIPTOR		BIT(28)
62 #define TDES3_LAST_DESCRIPTOR_SHIFT	28
63 #define TDES3_FIRST_DESCRIPTOR		BIT(29)
64 #define TDES3_CONTEXT_TYPE		BIT(30)
65 #define	TDES3_CONTEXT_TYPE_SHIFT	30
66 
67 /* TDS3 use for both format (read and write back) */
68 #define TDES3_OWN			BIT(31)
69 #define TDES3_OWN_SHIFT			31
70 
71 /* Normal receive descriptor defines (without split feature) */
72 
73 /* RDES0 (write back format) */
74 #define RDES0_VLAN_TAG_MASK		GENMASK(15, 0)
75 
76 /* RDES1 (write back format) */
77 #define RDES1_IP_PAYLOAD_TYPE_MASK	GENMASK(2, 0)
78 #define RDES1_IP_HDR_ERROR		BIT(3)
79 #define RDES1_IPV4_HEADER		BIT(4)
80 #define RDES1_IPV6_HEADER		BIT(5)
81 #define RDES1_IP_CSUM_BYPASSED		BIT(6)
82 #define RDES1_IP_CSUM_ERROR		BIT(7)
83 #define RDES1_PTP_MSG_TYPE_MASK		GENMASK(11, 8)
84 #define RDES1_PTP_PACKET_TYPE		BIT(12)
85 #define RDES1_PTP_VER			BIT(13)
86 #define RDES1_TIMESTAMP_AVAILABLE	BIT(14)
87 #define RDES1_TIMESTAMP_AVAILABLE_SHIFT	14
88 #define RDES1_TIMESTAMP_DROPPED		BIT(15)
89 #define RDES1_IP_TYPE1_CSUM_MASK	GENMASK(31, 16)
90 
91 /* RDES2 (write back format) */
92 #define RDES2_L3_L4_HEADER_SIZE_MASK	GENMASK(9, 0)
93 #define RDES2_VLAN_FILTER_STATUS	BIT(15)
94 #define RDES2_SA_FILTER_FAIL		BIT(16)
95 #define RDES2_DA_FILTER_FAIL		BIT(17)
96 #define RDES2_HASH_FILTER_STATUS	BIT(18)
97 #define RDES2_MAC_ADDR_MATCH_MASK	GENMASK(26, 19)
98 #define RDES2_HASH_VALUE_MATCH_MASK	GENMASK(26, 19)
99 #define RDES2_L3_FILTER_MATCH		BIT(27)
100 #define RDES2_L4_FILTER_MATCH		BIT(28)
101 #define RDES2_L3_L4_FILT_NB_MATCH_MASK	GENMASK(27, 26)
102 #define RDES2_L3_L4_FILT_NB_MATCH_SHIFT	26
103 
104 /* RDES3 (write back format) */
105 #define RDES3_PACKET_SIZE_MASK		GENMASK(14, 0)
106 #define RDES3_ERROR_SUMMARY		BIT(15)
107 #define RDES3_PACKET_LEN_TYPE_MASK	GENMASK(18, 16)
108 #define RDES3_DRIBBLE_ERROR		BIT(19)
109 #define RDES3_RECEIVE_ERROR		BIT(20)
110 #define RDES3_OVERFLOW_ERROR		BIT(21)
111 #define RDES3_RECEIVE_WATCHDOG		BIT(22)
112 #define RDES3_GIANT_PACKET		BIT(23)
113 #define RDES3_CRC_ERROR			BIT(24)
114 #define RDES3_RDES0_VALID		BIT(25)
115 #define RDES3_RDES1_VALID		BIT(26)
116 #define RDES3_RDES2_VALID		BIT(27)
117 #define RDES3_LAST_DESCRIPTOR		BIT(28)
118 #define RDES3_FIRST_DESCRIPTOR		BIT(29)
119 #define RDES3_CONTEXT_DESCRIPTOR	BIT(30)
120 #define RDES3_CONTEXT_DESCRIPTOR_SHIFT	30
121 
122 /* RDES3 (read format) */
123 #define RDES3_BUFFER1_VALID_ADDR	BIT(24)
124 #define RDES3_BUFFER2_VALID_ADDR	BIT(25)
125 #define RDES3_INT_ON_COMPLETION_EN	BIT(30)
126 
127 /* TDS3 use for both format (read and write back) */
128 #define RDES3_OWN			BIT(31)
129 
130 #endif /* __DWMAC4_DESCS_H__ */
131