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_PADDED_PKT_CSUM 0x0000000000002000UL 44#define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL 45#define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL 46#define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002UL 47#define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001UL 48 49/* hcall macros */ 50#define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \ 51 plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac) 52 53#define h_free_logical_lan(ua) \ 54 plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua) 55 56#define h_add_logical_lan_buffer(ua, buf) \ 57 plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf) 58 59static inline long h_send_logical_lan(unsigned long unit_address, 60 unsigned long desc1, unsigned long desc2, unsigned long desc3, 61 unsigned long desc4, unsigned long desc5, unsigned long desc6, 62 unsigned long corellator_in, unsigned long *corellator_out) 63{ 64 long rc; 65 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; 66 67 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, desc1, 68 desc2, desc3, desc4, desc5, desc6, corellator_in); 69 70 *corellator_out = retbuf[0]; 71 72 return rc; 73} 74 75static inline long h_illan_attributes(unsigned long unit_address, 76 unsigned long reset_mask, unsigned long set_mask, 77 unsigned long *ret_attributes) 78{ 79 long rc; 80 unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; 81 82 rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address, 83 reset_mask, set_mask); 84 85 *ret_attributes = retbuf[0]; 86 87 return rc; 88} 89 90#define h_multicast_ctrl(ua, cmd, mac) \ 91 plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac) 92 93#define h_change_logical_lan_mac(ua, mac) \ 94 plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac) 95 96#define IBMVETH_NUM_BUFF_POOLS 5 97#define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */ 98#define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */ 99#define IBMVETH_MIN_MTU 68 100#define IBMVETH_MAX_POOL_COUNT 4096 101#define IBMVETH_BUFF_LIST_SIZE 4096 102#define IBMVETH_FILT_LIST_SIZE 4096 103#define IBMVETH_MAX_BUF_SIZE (1024 * 128) 104 105static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 }; 106static int pool_count[] = { 256, 512, 256, 256, 256 }; 107static int pool_active[] = { 1, 1, 0, 0, 0}; 108 109#define IBM_VETH_INVALID_MAP ((u16)0xffff) 110 111struct ibmveth_buff_pool { 112 u32 size; 113 u32 index; 114 u32 buff_size; 115 u32 threshold; 116 atomic_t available; 117 u32 consumer_index; 118 u32 producer_index; 119 u16 *free_map; 120 dma_addr_t *dma_addr; 121 struct sk_buff **skbuff; 122 int active; 123 struct kobject kobj; 124}; 125 126struct ibmveth_rx_q { 127 u64 index; 128 u64 num_slots; 129 u64 toggle; 130 dma_addr_t queue_dma; 131 u32 queue_len; 132 struct ibmveth_rx_q_entry *queue_addr; 133}; 134 135struct ibmveth_adapter { 136 struct vio_dev *vdev; 137 struct net_device *netdev; 138 struct napi_struct napi; 139 struct net_device_stats stats; 140 unsigned int mcastFilterSize; 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[IBMVETH_NUM_BUFF_POOLS]; 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 u64 fw_ipv6_csum_support; 153 u64 fw_ipv4_csum_support; 154 /* adapter specific stats */ 155 u64 replenish_task_cycles; 156 u64 replenish_no_mem; 157 u64 replenish_add_buff_failure; 158 u64 replenish_add_buff_success; 159 u64 rx_invalid_buffer; 160 u64 rx_no_buffer; 161 u64 tx_map_failed; 162 u64 tx_send_failed; 163}; 164 165/* 166 * We pass struct ibmveth_buf_desc_fields to the hypervisor in registers, 167 * so we don't need to byteswap the two elements. However since we use 168 * a union (ibmveth_buf_desc) to convert from the struct to a u64 we 169 * do end up with endian specific ordering of the elements and that 170 * needs correcting. 171 */ 172struct ibmveth_buf_desc_fields { 173#ifdef __BIG_ENDIAN 174 u32 flags_len; 175 u32 address; 176#else 177 u32 address; 178 u32 flags_len; 179#endif 180#define IBMVETH_BUF_VALID 0x80000000 181#define IBMVETH_BUF_TOGGLE 0x40000000 182#define IBMVETH_BUF_NO_CSUM 0x02000000 183#define IBMVETH_BUF_CSUM_GOOD 0x01000000 184#define IBMVETH_BUF_LEN_MASK 0x00FFFFFF 185}; 186 187union ibmveth_buf_desc { 188 u64 desc; 189 struct ibmveth_buf_desc_fields fields; 190}; 191 192struct ibmveth_rx_q_entry { 193 __be32 flags_off; 194#define IBMVETH_RXQ_TOGGLE 0x80000000 195#define IBMVETH_RXQ_TOGGLE_SHIFT 31 196#define IBMVETH_RXQ_VALID 0x40000000 197#define IBMVETH_RXQ_NO_CSUM 0x02000000 198#define IBMVETH_RXQ_CSUM_GOOD 0x01000000 199#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF 200 201 __be32 length; 202 /* correlator is only used by the OS, no need to byte swap */ 203 u64 correlator; 204}; 205 206#endif /* _IBMVETH_H */ 207