drivers/net: Convert unbounded kzalloc calls to kcalloc
[linux-2.6.git] / drivers / net / ibmveth.h
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   0x0000000000002000UL
43 #define IBMVETH_ILLAN_TRUNK_PRI_MASK    0x0000000000000F00UL
44 #define IBMVETH_ILLAN_IPV6_TCP_CSUM             0x0000000000000004UL
45 #define IBMVETH_ILLAN_IPV4_TCP_CSUM             0x0000000000000002UL
46 #define IBMVETH_ILLAN_ACTIVE_TRUNK              0x0000000000000001UL
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
58 static 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
74 static 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_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */
97 #define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
98 #define IBMVETH_MAX_MTU 68
99 #define IBMVETH_MAX_POOL_COUNT 4096
100 #define IBMVETH_BUFF_LIST_SIZE 4096
101 #define IBMVETH_FILT_LIST_SIZE 4096
102 #define IBMVETH_MAX_BUF_SIZE (1024 * 128)
103
104 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
105 static int pool_count[] = { 256, 768, 256, 256, 256 };
106 static int pool_active[] = { 1, 1, 0, 0, 0};
107
108 #define IBM_VETH_INVALID_MAP ((u16)0xffff)
109
110 struct ibmveth_buff_pool {
111     u32 size;
112     u32 index;
113     u32 buff_size;
114     u32 threshold;
115     atomic_t available;
116     u32 consumer_index;
117     u32 producer_index;
118     u16 *free_map;
119     dma_addr_t *dma_addr;
120     struct sk_buff **skbuff;
121     int active;
122     struct kobject kobj;
123 };
124
125 struct ibmveth_rx_q {
126     u64        index;
127     u64        num_slots;
128     u64        toggle;
129     dma_addr_t queue_dma;
130     u32        queue_len;
131     struct ibmveth_rx_q_entry *queue_addr;
132 };
133
134 struct ibmveth_adapter {
135     struct vio_dev *vdev;
136     struct net_device *netdev;
137     struct napi_struct napi;
138     struct net_device_stats stats;
139     unsigned int mcastFilterSize;
140     unsigned long mac_addr;
141     void * buffer_list_addr;
142     void * filter_list_addr;
143     dma_addr_t buffer_list_dma;
144     dma_addr_t filter_list_dma;
145     struct ibmveth_buff_pool rx_buff_pool[IbmVethNumBufferPools];
146     struct ibmveth_rx_q rx_queue;
147     int pool_config;
148     int rx_csum;
149     void *bounce_buffer;
150     dma_addr_t bounce_buffer_dma;
151
152     /* adapter specific stats */
153     u64 replenish_task_cycles;
154     u64 replenish_no_mem;
155     u64 replenish_add_buff_failure;
156     u64 replenish_add_buff_success;
157     u64 rx_invalid_buffer;
158     u64 rx_no_buffer;
159     u64 tx_map_failed;
160     u64 tx_send_failed;
161     spinlock_t stats_lock;
162 };
163
164 struct ibmveth_buf_desc_fields {
165         u32 flags_len;
166 #define IBMVETH_BUF_VALID       0x80000000
167 #define IBMVETH_BUF_TOGGLE      0x40000000
168 #define IBMVETH_BUF_NO_CSUM     0x02000000
169 #define IBMVETH_BUF_CSUM_GOOD   0x01000000
170 #define IBMVETH_BUF_LEN_MASK    0x00FFFFFF
171         u32 address;
172 };
173
174 union ibmveth_buf_desc {
175     u64 desc;
176     struct ibmveth_buf_desc_fields fields;
177 };
178
179 struct ibmveth_rx_q_entry {
180         u32 flags_off;
181 #define IBMVETH_RXQ_TOGGLE              0x80000000
182 #define IBMVETH_RXQ_TOGGLE_SHIFT        31
183 #define IBMVETH_RXQ_VALID               0x40000000
184 #define IBMVETH_RXQ_NO_CSUM             0x02000000
185 #define IBMVETH_RXQ_CSUM_GOOD           0x01000000
186 #define IBMVETH_RXQ_OFF_MASK            0x0000FFFF
187
188         u32 length;
189         u64 correlator;
190 };
191
192 #endif /* _IBMVETH_H */