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 61 static 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 84 static 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) 113 114 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 }; 115 static int pool_count[] = { 256, 512, 256, 256, 256 }; 116 static int pool_count_cmo[] = { 256, 512, 256, 256, 64 }; 117 static int pool_active[] = { 1, 1, 0, 0, 1}; 118 119 #define IBM_VETH_INVALID_MAP ((u16)0xffff) 120 121 struct 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 }; 135 136 struct 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 }; 144 145 struct 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 */ 186 struct 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 }; 201 202 union ibmveth_buf_desc { 203 u64 desc; 204 struct ibmveth_buf_desc_fields fields; 205 }; 206 207 struct 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_NO_CSUM 0x02000000 213 #define IBMVETH_RXQ_CSUM_GOOD 0x01000000 214 #define IBMVETH_RXQ_OFF_MASK 0x0000FFFF 215 216 __be32 length; 217 /* correlator is only used by the OS, no need to byte swap */ 218 u64 correlator; 219 }; 220 221 #endif /* _IBMVETH_H */ 222