tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/**************************************************************************/
2/* */
3/* IBM eServer i/[Series Virtual Ethernet Device Driver */
4/* Copyright (C) 2003 IBM Corp. */
5/* Dave Larson (larson1@us.ibm.com) */
6/* Santiago Leon (santil@us.ibm.com) */
7/* */
8/* This program is free software; you can redistribute it and/or modify */
9/* it under the terms of the GNU General Public License as published by */
10/* the Free Software Foundation; either version 2 of the License, or */
11/* (at your option) any later version. */
12/* */
13/* This program is distributed in the hope that it will be useful, */
14/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
15/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
16/* GNU General Public License for more details. */
17/* */
18/* You should have received a copy of the GNU General Public License */
19/* along with this program; if not, write to the Free Software */
20/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 */
21/* USA */
22/* */
23/**************************************************************************/
24
25#ifndef _IBMVETH_H
26#define _IBMVETH_H
27
28/* constants for H_MULTICAST_CTRL */
29#define IbmVethMcastReceptionModifyBit 0x80000UL
30#define IbmVethMcastReceptionEnableBit 0x20000UL
31#define IbmVethMcastFilterModifyBit 0x40000UL
32#define IbmVethMcastFilterEnableBit 0x10000UL
33
34#define IbmVethMcastEnableRecv (IbmVethMcastReceptionModifyBit | IbmVethMcastReceptionEnableBit)
35#define IbmVethMcastDisableRecv (IbmVethMcastReceptionModifyBit)
36#define IbmVethMcastEnableFiltering (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit)
37#define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)
38#define IbmVethMcastAddFilter 0x1UL
39#define IbmVethMcastRemoveFilter 0x2UL
40#define IbmVethMcastClearFilterTable 0x3UL
41
42#define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000ULL
43#define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00ULL
44#define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004ULL
45#define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002ULL
46#define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001ULL
47
48/* hcall macros */
49#define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
50 plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
51
52#define h_free_logical_lan(ua) \
53 plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
54
55#define h_add_logical_lan_buffer(ua, buf) \
56 plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
57
58static inline long h_send_logical_lan(unsigned long unit_address,
59 unsigned long desc1, unsigned long desc2, unsigned long desc3,
60 unsigned long desc4, unsigned long desc5, unsigned long desc6,
61 unsigned long corellator_in, unsigned long *corellator_out)
62{
63 long rc;
64 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
65
66 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, desc1,
67 desc2, desc3, desc4, desc5, desc6, corellator_in);
68
69 *corellator_out = retbuf[0];
70
71 return rc;
72}
73
74static inline long h_illan_attributes(unsigned long unit_address,
75 unsigned long reset_mask, unsigned long set_mask,
76 unsigned long *ret_attributes)
77{
78 long rc;
79 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
80
81 rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
82 reset_mask, set_mask);
83
84 *ret_attributes = retbuf[0];
85
86 return rc;
87}
88
89#define h_multicast_ctrl(ua, cmd, mac) \
90 plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
91
92#define h_change_logical_lan_mac(ua, mac) \
93 plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
94
95#define IbmVethNumBufferPools 5
96#define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
97#define IBMVETH_MAX_MTU 68
98#define IBMVETH_MAX_POOL_COUNT 4096
99#define IBMVETH_MAX_BUF_SIZE (1024 * 128)
100
101static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
102static int pool_count[] = { 256, 768, 256, 256, 256 };
103static int pool_active[] = { 1, 1, 0, 0, 0};
104
105#define IBM_VETH_INVALID_MAP ((u16)0xffff)
106
107struct ibmveth_buff_pool {
108 u32 size;
109 u32 index;
110 u32 buff_size;
111 u32 threshold;
112 atomic_t available;
113 u32 consumer_index;
114 u32 producer_index;
115 u16 *free_map;
116 dma_addr_t *dma_addr;
117 struct sk_buff **skbuff;
118 int active;
119 struct kobject kobj;
120};
121
122struct ibmveth_rx_q {
123 u64 index;
124 u64 num_slots;
125 u64 toggle;
126 dma_addr_t queue_dma;
127 u32 queue_len;
128 struct ibmveth_rx_q_entry *queue_addr;
129};
130
131struct ibmveth_adapter {
132 struct vio_dev *vdev;
133 struct net_device *netdev;
134 struct napi_struct napi;
135 struct net_device_stats stats;
136 unsigned int mcastFilterSize;
137 unsigned long mac_addr;
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[IbmVethNumBufferPools];
143 struct ibmveth_rx_q rx_queue;
144 int pool_config;
145 int rx_csum;
146
147 /* adapter specific stats */
148 u64 replenish_task_cycles;
149 u64 replenish_no_mem;
150 u64 replenish_add_buff_failure;
151 u64 replenish_add_buff_success;
152 u64 rx_invalid_buffer;
153 u64 rx_no_buffer;
154 u64 tx_map_failed;
155 u64 tx_send_failed;
156 spinlock_t stats_lock;
157};
158
159struct ibmveth_buf_desc_fields {
160 u32 flags_len;
161#define IBMVETH_BUF_VALID 0x80000000
162#define IBMVETH_BUF_TOGGLE 0x40000000
163#define IBMVETH_BUF_NO_CSUM 0x02000000
164#define IBMVETH_BUF_CSUM_GOOD 0x01000000
165#define IBMVETH_BUF_LEN_MASK 0x00FFFFFF
166 u32 address;
167};
168
169union ibmveth_buf_desc {
170 u64 desc;
171 struct ibmveth_buf_desc_fields fields;
172};
173
174struct ibmveth_rx_q_entry {
175 u32 flags_off;
176#define IBMVETH_RXQ_TOGGLE 0x80000000
177#define IBMVETH_RXQ_TOGGLE_SHIFT 31
178#define IBMVETH_RXQ_VALID 0x40000000
179#define IBMVETH_RXQ_NO_CSUM 0x02000000
180#define IBMVETH_RXQ_CSUM_GOOD 0x01000000
181#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF
182
183 u32 length;
184 u64 correlator;
185};
186
187#endif /* _IBMVETH_H */