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, write to the Free Software 16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17 * 18 * Copyright (C) IBM Corporation, 2003, 2010 19 * 20 * Authors: Dave Larson <larson1@us.ibm.com> 21 * Santiago Leon <santil@linux.vnet.ibm.com> 22 * Brian King <brking@linux.vnet.ibm.com> 23 * Robert Jennings <rcj@linux.vnet.ibm.com> 24 * Anton Blanchard <anton@au.ibm.com> 25 */ 26 27 #ifndef _IBMVETH_H 28 #define _IBMVETH_H 29 30 /* constants for H_MULTICAST_CTRL */ 31 #define IbmVethMcastReceptionModifyBit 0x80000UL 32 #define IbmVethMcastReceptionEnableBit 0x20000UL 33 #define IbmVethMcastFilterModifyBit 0x40000UL 34 #define IbmVethMcastFilterEnableBit 0x10000UL 35 36 #define IbmVethMcastEnableRecv (IbmVethMcastReceptionModifyBit | IbmVethMcastReceptionEnableBit) 37 #define IbmVethMcastDisableRecv (IbmVethMcastReceptionModifyBit) 38 #define IbmVethMcastEnableFiltering (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit) 39 #define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit) 40 #define IbmVethMcastAddFilter 0x1UL 41 #define IbmVethMcastRemoveFilter 0x2UL 42 #define IbmVethMcastClearFilterTable 0x3UL 43 44 #define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000UL 45 #define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL 46 #define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL 47 #define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002UL 48 #define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001UL 49 50 /* hcall macros */ 51 #define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \ 52 plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac) 53 54 #define h_free_logical_lan(ua) \ 55 plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua) 56 57 #define h_add_logical_lan_buffer(ua, buf) \ 58 plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf) 59 60 static inline long h_send_logical_lan(unsigned long unit_address, 61 unsigned long desc1, unsigned long desc2, unsigned long desc3, 62 unsigned long desc4, unsigned long desc5, unsigned long desc6, 63 unsigned long corellator_in, unsigned long *corellator_out) 64 { 65 long rc; 66 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; 67 68 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, desc1, 69 desc2, desc3, desc4, desc5, desc6, corellator_in); 70 71 *corellator_out = retbuf[0]; 72 73 return rc; 74 } 75 76 static inline long h_illan_attributes(unsigned long unit_address, 77 unsigned long reset_mask, unsigned long set_mask, 78 unsigned long *ret_attributes) 79 { 80 long rc; 81 unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; 82 83 rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address, 84 reset_mask, set_mask); 85 86 *ret_attributes = retbuf[0]; 87 88 return rc; 89 } 90 91 #define h_multicast_ctrl(ua, cmd, mac) \ 92 plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac) 93 94 #define h_change_logical_lan_mac(ua, mac) \ 95 plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac) 96 97 #define IBMVETH_NUM_BUFF_POOLS 5 98 #define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */ 99 #define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */ 100 #define IBMVETH_MIN_MTU 68 101 #define IBMVETH_MAX_POOL_COUNT 4096 102 #define IBMVETH_BUFF_LIST_SIZE 4096 103 #define IBMVETH_FILT_LIST_SIZE 4096 104 #define IBMVETH_MAX_BUF_SIZE (1024 * 128) 105 106 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 }; 107 static int pool_count[] = { 256, 512, 256, 256, 256 }; 108 static int pool_active[] = { 1, 1, 0, 0, 0}; 109 110 #define IBM_VETH_INVALID_MAP ((u16)0xffff) 111 112 struct ibmveth_buff_pool { 113 u32 size; 114 u32 index; 115 u32 buff_size; 116 u32 threshold; 117 atomic_t available; 118 u32 consumer_index; 119 u32 producer_index; 120 u16 *free_map; 121 dma_addr_t *dma_addr; 122 struct sk_buff **skbuff; 123 int active; 124 struct kobject kobj; 125 }; 126 127 struct ibmveth_rx_q { 128 u64 index; 129 u64 num_slots; 130 u64 toggle; 131 dma_addr_t queue_dma; 132 u32 queue_len; 133 struct ibmveth_rx_q_entry *queue_addr; 134 }; 135 136 struct ibmveth_adapter { 137 struct vio_dev *vdev; 138 struct net_device *netdev; 139 struct napi_struct napi; 140 struct net_device_stats stats; 141 unsigned int mcastFilterSize; 142 unsigned long mac_addr; 143 void * buffer_list_addr; 144 void * filter_list_addr; 145 dma_addr_t buffer_list_dma; 146 dma_addr_t filter_list_dma; 147 struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS]; 148 struct ibmveth_rx_q rx_queue; 149 int pool_config; 150 int rx_csum; 151 void *bounce_buffer; 152 dma_addr_t bounce_buffer_dma; 153 154 u64 fw_ipv6_csum_support; 155 u64 fw_ipv4_csum_support; 156 /* adapter specific stats */ 157 u64 replenish_task_cycles; 158 u64 replenish_no_mem; 159 u64 replenish_add_buff_failure; 160 u64 replenish_add_buff_success; 161 u64 rx_invalid_buffer; 162 u64 rx_no_buffer; 163 u64 tx_map_failed; 164 u64 tx_send_failed; 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 */ 174 struct 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_NO_CSUM 0x02000000 185 #define IBMVETH_BUF_CSUM_GOOD 0x01000000 186 #define IBMVETH_BUF_LEN_MASK 0x00FFFFFF 187 }; 188 189 union ibmveth_buf_desc { 190 u64 desc; 191 struct ibmveth_buf_desc_fields fields; 192 }; 193 194 struct ibmveth_rx_q_entry { 195 __be32 flags_off; 196 #define IBMVETH_RXQ_TOGGLE 0x80000000 197 #define IBMVETH_RXQ_TOGGLE_SHIFT 31 198 #define IBMVETH_RXQ_VALID 0x40000000 199 #define IBMVETH_RXQ_NO_CSUM 0x02000000 200 #define IBMVETH_RXQ_CSUM_GOOD 0x01000000 201 #define IBMVETH_RXQ_OFF_MASK 0x0000FFFF 202 203 __be32 length; 204 /* correlator is only used by the OS, no need to byte swap */ 205 u64 correlator; 206 }; 207 208 #endif /* _IBMVETH_H */ 209