source: src/linux/universal/linux-4.4/drivers/net/ethernet/ibm/ibmveth.h @ 31884

Last change on this file since 31884 was 31884, checked in by brainslayer, 6 weeks ago

update kernels

File size: 6.9 KB
Line 
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    struct net_device_stats stats;
150    unsigned int mcastFilterSize;
151    void * buffer_list_addr;
152    void * filter_list_addr;
153    dma_addr_t buffer_list_dma;
154    dma_addr_t filter_list_dma;
155    struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];
156    struct ibmveth_rx_q rx_queue;
157    int pool_config;
158    int rx_csum;
159    int large_send;
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 */
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