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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * IBM Power Virtual Ethernet Device Driver
4 *
5 * Copyright (C) IBM Corporation, 2003, 2010
6 *
7 * Authors: Dave Larson <larson1@us.ibm.com>
8 * Santiago Leon <santil@linux.vnet.ibm.com>
9 * Brian King <brking@linux.vnet.ibm.com>
10 * Robert Jennings <rcj@linux.vnet.ibm.com>
11 * Anton Blanchard <anton@au.ibm.com>
12 */
13
14#ifndef _IBMVETH_H
15#define _IBMVETH_H
16
17/* constants for H_MULTICAST_CTRL */
18#define IbmVethMcastReceptionModifyBit 0x80000UL
19#define IbmVethMcastReceptionEnableBit 0x20000UL
20#define IbmVethMcastFilterModifyBit 0x40000UL
21#define IbmVethMcastFilterEnableBit 0x10000UL
22
23#define IbmVethMcastEnableRecv (IbmVethMcastReceptionModifyBit | IbmVethMcastReceptionEnableBit)
24#define IbmVethMcastDisableRecv (IbmVethMcastReceptionModifyBit)
25#define IbmVethMcastEnableFiltering (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit)
26#define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)
27#define IbmVethMcastAddFilter 0x1UL
28#define IbmVethMcastRemoveFilter 0x2UL
29#define IbmVethMcastClearFilterTable 0x3UL
30
31#define IBMVETH_ILLAN_LRG_SR_ENABLED 0x0000000000010000UL
32#define IBMVETH_ILLAN_LRG_SND_SUPPORT 0x0000000000008000UL
33#define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000UL
34#define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL
35#define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL
36#define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002UL
37#define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001UL
38
39/* hcall macros */
40#define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
41 plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
42
43#define h_free_logical_lan(ua) \
44 plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
45
46#define h_add_logical_lan_buffer(ua, buf) \
47 plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
48
49/* FW allows us to send 6 descriptors but we only use one so mark
50 * the other 5 as unused (0)
51 */
52static inline long h_send_logical_lan(unsigned long unit_address,
53 unsigned long desc, unsigned long corellator_in,
54 unsigned long *corellator_out, unsigned long mss,
55 unsigned long large_send_support)
56{
57 long rc;
58 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
59
60 if (large_send_support)
61 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
62 desc, 0, 0, 0, 0, 0, corellator_in, mss);
63 else
64 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
65 desc, 0, 0, 0, 0, 0, corellator_in);
66
67 *corellator_out = retbuf[0];
68
69 return rc;
70}
71
72static inline long h_illan_attributes(unsigned long unit_address,
73 unsigned long reset_mask, unsigned long set_mask,
74 unsigned long *ret_attributes)
75{
76 long rc;
77 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
78
79 rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
80 reset_mask, set_mask);
81
82 *ret_attributes = retbuf[0];
83
84 return rc;
85}
86
87#define h_multicast_ctrl(ua, cmd, mac) \
88 plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
89
90#define h_change_logical_lan_mac(ua, mac) \
91 plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
92
93#define IBMVETH_NUM_BUFF_POOLS 5
94#define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */
95#define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
96#define IBMVETH_MIN_MTU 68
97#define IBMVETH_MAX_POOL_COUNT 4096
98#define IBMVETH_BUFF_LIST_SIZE 4096
99#define IBMVETH_FILT_LIST_SIZE 4096
100#define IBMVETH_MAX_BUF_SIZE (1024 * 128)
101#define IBMVETH_MAX_TX_BUF_SIZE (1024 * 64)
102#define IBMVETH_MAX_QUEUES 16U
103#define IBMVETH_DEFAULT_QUEUES 8U
104
105static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
106static int pool_count[] = { 256, 512, 256, 256, 256 };
107static int pool_count_cmo[] = { 256, 512, 256, 256, 64 };
108static int pool_active[] = { 1, 1, 0, 0, 1};
109
110#define IBM_VETH_INVALID_MAP ((u16)0xffff)
111
112struct ibmveth_buff_pool {
113 u32 size;
114 u32 index;
115 u32 buff_size;
116 u32 threshold;
117 atomic_t available;
118 u32 consumer_index;
119 u32 producer_index;
120 u16 *free_map;
121 dma_addr_t *dma_addr;
122 struct sk_buff **skbuff;
123 int active;
124 struct kobject kobj;
125};
126
127struct ibmveth_rx_q {
128 u64 index;
129 u64 num_slots;
130 u64 toggle;
131 dma_addr_t queue_dma;
132 u32 queue_len;
133 struct ibmveth_rx_q_entry *queue_addr;
134};
135
136struct ibmveth_adapter {
137 struct vio_dev *vdev;
138 struct net_device *netdev;
139 struct napi_struct napi;
140 unsigned int mcastFilterSize;
141 void * buffer_list_addr;
142 void * filter_list_addr;
143 void *tx_ltb_ptr[IBMVETH_MAX_QUEUES];
144 unsigned int tx_ltb_size;
145 dma_addr_t tx_ltb_dma[IBMVETH_MAX_QUEUES];
146 dma_addr_t buffer_list_dma;
147 dma_addr_t filter_list_dma;
148 struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];
149 struct ibmveth_rx_q rx_queue;
150 int rx_csum;
151 int large_send;
152 bool is_active_trunk;
153
154 u64 fw_ipv6_csum_support;
155 u64 fw_ipv4_csum_support;
156 u64 fw_large_send_support;
157 /* adapter specific stats */
158 u64 replenish_task_cycles;
159 u64 replenish_no_mem;
160 u64 replenish_add_buff_failure;
161 u64 replenish_add_buff_success;
162 u64 rx_invalid_buffer;
163 u64 rx_no_buffer;
164 u64 tx_map_failed;
165 u64 tx_send_failed;
166 u64 tx_large_packets;
167 u64 rx_large_packets;
168 /* Ethtool settings */
169 u8 duplex;
170 u32 speed;
171};
172
173/*
174 * We pass struct ibmveth_buf_desc_fields to the hypervisor in registers,
175 * so we don't need to byteswap the two elements. However since we use
176 * a union (ibmveth_buf_desc) to convert from the struct to a u64 we
177 * do end up with endian specific ordering of the elements and that
178 * needs correcting.
179 */
180struct ibmveth_buf_desc_fields {
181#ifdef __BIG_ENDIAN
182 u32 flags_len;
183 u32 address;
184#else
185 u32 address;
186 u32 flags_len;
187#endif
188#define IBMVETH_BUF_VALID 0x80000000
189#define IBMVETH_BUF_TOGGLE 0x40000000
190#define IBMVETH_BUF_LRG_SND 0x04000000
191#define IBMVETH_BUF_NO_CSUM 0x02000000
192#define IBMVETH_BUF_CSUM_GOOD 0x01000000
193#define IBMVETH_BUF_LEN_MASK 0x00FFFFFF
194};
195
196union ibmveth_buf_desc {
197 u64 desc;
198 struct ibmveth_buf_desc_fields fields;
199};
200
201struct ibmveth_rx_q_entry {
202 __be32 flags_off;
203#define IBMVETH_RXQ_TOGGLE 0x80000000
204#define IBMVETH_RXQ_TOGGLE_SHIFT 31
205#define IBMVETH_RXQ_VALID 0x40000000
206#define IBMVETH_RXQ_LRG_PKT 0x04000000
207#define IBMVETH_RXQ_NO_CSUM 0x02000000
208#define IBMVETH_RXQ_CSUM_GOOD 0x01000000
209#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF
210
211 __be32 length;
212 /* correlator is only used by the OS, no need to byte swap */
213 u64 correlator;
214};
215
216#endif /* _IBMVETH_H */