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1/*
2 * IBM Power Virtual Ethernet Device Driver
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU 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 * Copyright (C) IBM Corporation, 2003, 2010
18 *
19 * Authors: Dave Larson <larson1@us.ibm.com>
20 * Santiago Leon <santil@linux.vnet.ibm.com>
21 * Brian King <brking@linux.vnet.ibm.com>
22 * Robert Jennings <rcj@linux.vnet.ibm.com>
23 * Anton Blanchard <anton@au.ibm.com>
24 */
25
26#ifndef _IBMVETH_H
27#define _IBMVETH_H
28
29/* constants for H_MULTICAST_CTRL */
30#define IbmVethMcastReceptionModifyBit 0x80000UL
31#define IbmVethMcastReceptionEnableBit 0x20000UL
32#define IbmVethMcastFilterModifyBit 0x40000UL
33#define IbmVethMcastFilterEnableBit 0x10000UL
34
35#define IbmVethMcastEnableRecv (IbmVethMcastReceptionModifyBit | IbmVethMcastReceptionEnableBit)
36#define IbmVethMcastDisableRecv (IbmVethMcastReceptionModifyBit)
37#define IbmVethMcastEnableFiltering (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit)
38#define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)
39#define IbmVethMcastAddFilter 0x1UL
40#define IbmVethMcastRemoveFilter 0x2UL
41#define IbmVethMcastClearFilterTable 0x3UL
42
43#define IBMVETH_ILLAN_LRG_SR_ENABLED 0x0000000000010000UL
44#define IBMVETH_ILLAN_LRG_SND_SUPPORT 0x0000000000008000UL
45#define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000UL
46#define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL
47#define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL
48#define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002UL
49#define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001UL
50
51/* hcall macros */
52#define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
53 plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
54
55#define h_free_logical_lan(ua) \
56 plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
57
58#define h_add_logical_lan_buffer(ua, buf) \
59 plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
60
61static inline long h_send_logical_lan(unsigned long unit_address,
62 unsigned long desc1, unsigned long desc2, unsigned long desc3,
63 unsigned long desc4, unsigned long desc5, unsigned long desc6,
64 unsigned long corellator_in, unsigned long *corellator_out,
65 unsigned long mss, unsigned long large_send_support)
66{
67 long rc;
68 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
69
70 if (large_send_support)
71 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
72 desc1, desc2, desc3, desc4, desc5, desc6,
73 corellator_in, mss);
74 else
75 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
76 desc1, desc2, desc3, desc4, desc5, desc6,
77 corellator_in);
78
79 *corellator_out = retbuf[0];
80
81 return rc;
82}
83
84static inline long h_illan_attributes(unsigned long unit_address,
85 unsigned long reset_mask, unsigned long set_mask,
86 unsigned long *ret_attributes)
87{
88 long rc;
89 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
90
91 rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
92 reset_mask, set_mask);
93
94 *ret_attributes = retbuf[0];
95
96 return rc;
97}
98
99#define h_multicast_ctrl(ua, cmd, mac) \
100 plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
101
102#define h_change_logical_lan_mac(ua, mac) \
103 plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
104
105#define IBMVETH_NUM_BUFF_POOLS 5
106#define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */
107#define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
108#define IBMVETH_MIN_MTU 68
109#define IBMVETH_MAX_POOL_COUNT 4096
110#define IBMVETH_BUFF_LIST_SIZE 4096
111#define IBMVETH_FILT_LIST_SIZE 4096
112#define IBMVETH_MAX_BUF_SIZE (1024 * 128)
113
114static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
115static int pool_count[] = { 256, 512, 256, 256, 256 };
116static int pool_count_cmo[] = { 256, 512, 256, 256, 64 };
117static int pool_active[] = { 1, 1, 0, 0, 1};
118
119#define IBM_VETH_INVALID_MAP ((u16)0xffff)
120
121struct ibmveth_buff_pool {
122 u32 size;
123 u32 index;
124 u32 buff_size;
125 u32 threshold;
126 atomic_t available;
127 u32 consumer_index;
128 u32 producer_index;
129 u16 *free_map;
130 dma_addr_t *dma_addr;
131 struct sk_buff **skbuff;
132 int active;
133 struct kobject kobj;
134};
135
136struct ibmveth_rx_q {
137 u64 index;
138 u64 num_slots;
139 u64 toggle;
140 dma_addr_t queue_dma;
141 u32 queue_len;
142 struct ibmveth_rx_q_entry *queue_addr;
143};
144
145struct ibmveth_adapter {
146 struct vio_dev *vdev;
147 struct net_device *netdev;
148 struct napi_struct napi;
149 unsigned int mcastFilterSize;
150 void * buffer_list_addr;
151 void * filter_list_addr;
152 dma_addr_t buffer_list_dma;
153 dma_addr_t filter_list_dma;
154 struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];
155 struct ibmveth_rx_q rx_queue;
156 int pool_config;
157 int rx_csum;
158 int large_send;
159 bool is_active_trunk;
160 void *bounce_buffer;
161 dma_addr_t bounce_buffer_dma;
162
163 u64 fw_ipv6_csum_support;
164 u64 fw_ipv4_csum_support;
165 u64 fw_large_send_support;
166 /* adapter specific stats */
167 u64 replenish_task_cycles;
168 u64 replenish_no_mem;
169 u64 replenish_add_buff_failure;
170 u64 replenish_add_buff_success;
171 u64 rx_invalid_buffer;
172 u64 rx_no_buffer;
173 u64 tx_map_failed;
174 u64 tx_send_failed;
175 u64 tx_large_packets;
176 u64 rx_large_packets;
177};
178
179/*
180 * We pass struct ibmveth_buf_desc_fields to the hypervisor in registers,
181 * so we don't need to byteswap the two elements. However since we use
182 * a union (ibmveth_buf_desc) to convert from the struct to a u64 we
183 * do end up with endian specific ordering of the elements and that
184 * needs correcting.
185 */
186struct ibmveth_buf_desc_fields {
187#ifdef __BIG_ENDIAN
188 u32 flags_len;
189 u32 address;
190#else
191 u32 address;
192 u32 flags_len;
193#endif
194#define IBMVETH_BUF_VALID 0x80000000
195#define IBMVETH_BUF_TOGGLE 0x40000000
196#define IBMVETH_BUF_LRG_SND 0x04000000
197#define IBMVETH_BUF_NO_CSUM 0x02000000
198#define IBMVETH_BUF_CSUM_GOOD 0x01000000
199#define IBMVETH_BUF_LEN_MASK 0x00FFFFFF
200};
201
202union ibmveth_buf_desc {
203 u64 desc;
204 struct ibmveth_buf_desc_fields fields;
205};
206
207struct ibmveth_rx_q_entry {
208 __be32 flags_off;
209#define IBMVETH_RXQ_TOGGLE 0x80000000
210#define IBMVETH_RXQ_TOGGLE_SHIFT 31
211#define IBMVETH_RXQ_VALID 0x40000000
212#define IBMVETH_RXQ_LRG_PKT 0x04000000
213#define IBMVETH_RXQ_NO_CSUM 0x02000000
214#define IBMVETH_RXQ_CSUM_GOOD 0x01000000
215#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF
216
217 __be32 length;
218 /* correlator is only used by the OS, no need to byte swap */
219 u64 correlator;
220};
221
222#endif /* _IBMVETH_H */
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
49static inline long h_send_logical_lan(unsigned long unit_address,
50 unsigned long desc1, unsigned long desc2, unsigned long desc3,
51 unsigned long desc4, unsigned long desc5, unsigned long desc6,
52 unsigned long corellator_in, unsigned long *corellator_out,
53 unsigned long mss, unsigned long large_send_support)
54{
55 long rc;
56 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
57
58 if (large_send_support)
59 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
60 desc1, desc2, desc3, desc4, desc5, desc6,
61 corellator_in, mss);
62 else
63 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
64 desc1, desc2, desc3, desc4, desc5, desc6,
65 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
102static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
103static int pool_count[] = { 256, 512, 256, 256, 256 };
104static int pool_count_cmo[] = { 256, 512, 256, 256, 64 };
105static int pool_active[] = { 1, 1, 0, 0, 1};
106
107#define IBM_VETH_INVALID_MAP ((u16)0xffff)
108
109struct ibmveth_buff_pool {
110 u32 size;
111 u32 index;
112 u32 buff_size;
113 u32 threshold;
114 atomic_t available;
115 u32 consumer_index;
116 u32 producer_index;
117 u16 *free_map;
118 dma_addr_t *dma_addr;
119 struct sk_buff **skbuff;
120 int active;
121 struct kobject kobj;
122};
123
124struct ibmveth_rx_q {
125 u64 index;
126 u64 num_slots;
127 u64 toggle;
128 dma_addr_t queue_dma;
129 u32 queue_len;
130 struct ibmveth_rx_q_entry *queue_addr;
131};
132
133struct ibmveth_adapter {
134 struct vio_dev *vdev;
135 struct net_device *netdev;
136 struct napi_struct napi;
137 unsigned int mcastFilterSize;
138 void * buffer_list_addr;
139 void * filter_list_addr;
140 dma_addr_t buffer_list_dma;
141 dma_addr_t filter_list_dma;
142 struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];
143 struct ibmveth_rx_q rx_queue;
144 int pool_config;
145 int rx_csum;
146 int large_send;
147 bool is_active_trunk;
148 void *bounce_buffer;
149 dma_addr_t bounce_buffer_dma;
150
151 u64 fw_ipv6_csum_support;
152 u64 fw_ipv4_csum_support;
153 u64 fw_large_send_support;
154 /* adapter specific stats */
155 u64 replenish_task_cycles;
156 u64 replenish_no_mem;
157 u64 replenish_add_buff_failure;
158 u64 replenish_add_buff_success;
159 u64 rx_invalid_buffer;
160 u64 rx_no_buffer;
161 u64 tx_map_failed;
162 u64 tx_send_failed;
163 u64 tx_large_packets;
164 u64 rx_large_packets;
165};
166
167/*
168 * We pass struct ibmveth_buf_desc_fields to the hypervisor in registers,
169 * so we don't need to byteswap the two elements. However since we use
170 * a union (ibmveth_buf_desc) to convert from the struct to a u64 we
171 * do end up with endian specific ordering of the elements and that
172 * needs correcting.
173 */
174struct ibmveth_buf_desc_fields {
175#ifdef __BIG_ENDIAN
176 u32 flags_len;
177 u32 address;
178#else
179 u32 address;
180 u32 flags_len;
181#endif
182#define IBMVETH_BUF_VALID 0x80000000
183#define IBMVETH_BUF_TOGGLE 0x40000000
184#define IBMVETH_BUF_LRG_SND 0x04000000
185#define IBMVETH_BUF_NO_CSUM 0x02000000
186#define IBMVETH_BUF_CSUM_GOOD 0x01000000
187#define IBMVETH_BUF_LEN_MASK 0x00FFFFFF
188};
189
190union ibmveth_buf_desc {
191 u64 desc;
192 struct ibmveth_buf_desc_fields fields;
193};
194
195struct ibmveth_rx_q_entry {
196 __be32 flags_off;
197#define IBMVETH_RXQ_TOGGLE 0x80000000
198#define IBMVETH_RXQ_TOGGLE_SHIFT 31
199#define IBMVETH_RXQ_VALID 0x40000000
200#define IBMVETH_RXQ_LRG_PKT 0x04000000
201#define IBMVETH_RXQ_NO_CSUM 0x02000000
202#define IBMVETH_RXQ_CSUM_GOOD 0x01000000
203#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF
204
205 __be32 length;
206 /* correlator is only used by the OS, no need to byte swap */
207 u64 correlator;
208};
209
210#endif /* _IBMVETH_H */