1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * IBM Power Virtual Ethernet Device Driver 4 * 5 * Copyright (C) IBM Corporation, 2003, 2010 6 * 7 * Authors: Dave Larson <larson1@us.ibm.com> 8 * Santiago Leon <santil@linux.vnet.ibm.com> 9 * Brian King <brking@linux.vnet.ibm.com> 10 * Robert Jennings <rcj@linux.vnet.ibm.com> 11 * Anton Blanchard <anton@au.ibm.com> 12 */ 13 14 #ifndef _IBMVETH_H 15 #define _IBMVETH_H 16 17 /* constants for H_MULTICAST_CTRL */ 18 #define IbmVethMcastReceptionModifyBit 0x80000UL 19 #define IbmVethMcastReceptionEnableBit 0x20000UL 20 #define IbmVethMcastFilterModifyBit 0x40000UL 21 #define IbmVethMcastFilterEnableBit 0x10000UL 22 23 #define IbmVethMcastEnableRecv (IbmVethMcastReceptionModifyBit | IbmVethMcastReceptionEnableBit) 24 #define IbmVethMcastDisableRecv (IbmVethMcastReceptionModifyBit) 25 #define IbmVethMcastEnableFiltering (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit) 26 #define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit) 27 #define IbmVethMcastAddFilter 0x1UL 28 #define IbmVethMcastRemoveFilter 0x2UL 29 #define IbmVethMcastClearFilterTable 0x3UL 30 31 #define IBMVETH_ILLAN_LRG_SR_ENABLED 0x0000000000010000UL 32 #define IBMVETH_ILLAN_LRG_SND_SUPPORT 0x0000000000008000UL 33 #define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000UL 34 #define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL 35 #define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL 36 #define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002UL 37 #define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001UL 38 39 /* hcall macros */ 40 #define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \ 41 plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac) 42 43 #define h_free_logical_lan(ua) \ 44 plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua) 45 46 #define h_add_logical_lan_buffer(ua, buf) \ 47 plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf) 48 49 static inline long h_send_logical_lan(unsigned long unit_address, 50 unsigned long desc1, unsigned long desc2, unsigned long desc3, 51 unsigned long desc4, unsigned long desc5, unsigned long desc6, 52 unsigned long corellator_in, unsigned long *corellator_out, 53 unsigned long mss, unsigned long large_send_support) 54 { 55 long rc; 56 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; 57 58 if (large_send_support) 59 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, 60 desc1, desc2, desc3, desc4, desc5, desc6, 61 corellator_in, mss); 62 else 63 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, 64 desc1, desc2, desc3, desc4, desc5, desc6, 65 corellator_in); 66 67 *corellator_out = retbuf[0]; 68 69 return rc; 70 } 71 72 static inline long h_illan_attributes(unsigned long unit_address, 73 unsigned long reset_mask, unsigned long set_mask, 74 unsigned long *ret_attributes) 75 { 76 long rc; 77 unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; 78 79 rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address, 80 reset_mask, set_mask); 81 82 *ret_attributes = retbuf[0]; 83 84 return rc; 85 } 86 87 #define h_multicast_ctrl(ua, cmd, mac) \ 88 plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac) 89 90 #define h_change_logical_lan_mac(ua, mac) \ 91 plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac) 92 93 #define IBMVETH_NUM_BUFF_POOLS 5 94 #define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */ 95 #define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */ 96 #define IBMVETH_MIN_MTU 68 97 #define IBMVETH_MAX_POOL_COUNT 4096 98 #define IBMVETH_BUFF_LIST_SIZE 4096 99 #define IBMVETH_FILT_LIST_SIZE 4096 100 #define IBMVETH_MAX_BUF_SIZE (1024 * 128) 101 102 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 }; 103 static int pool_count[] = { 256, 512, 256, 256, 256 }; 104 static int pool_count_cmo[] = { 256, 512, 256, 256, 64 }; 105 static int pool_active[] = { 1, 1, 0, 0, 1}; 106 107 #define IBM_VETH_INVALID_MAP ((u16)0xffff) 108 109 struct ibmveth_buff_pool { 110 u32 size; 111 u32 index; 112 u32 buff_size; 113 u32 threshold; 114 atomic_t available; 115 u32 consumer_index; 116 u32 producer_index; 117 u16 *free_map; 118 dma_addr_t *dma_addr; 119 struct sk_buff **skbuff; 120 int active; 121 struct kobject kobj; 122 }; 123 124 struct ibmveth_rx_q { 125 u64 index; 126 u64 num_slots; 127 u64 toggle; 128 dma_addr_t queue_dma; 129 u32 queue_len; 130 struct ibmveth_rx_q_entry *queue_addr; 131 }; 132 133 struct ibmveth_adapter { 134 struct vio_dev *vdev; 135 struct net_device *netdev; 136 struct napi_struct napi; 137 unsigned int mcastFilterSize; 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[IBMVETH_NUM_BUFF_POOLS]; 143 struct ibmveth_rx_q rx_queue; 144 int pool_config; 145 int rx_csum; 146 int large_send; 147 bool is_active_trunk; 148 void *bounce_buffer; 149 dma_addr_t bounce_buffer_dma; 150 151 u64 fw_ipv6_csum_support; 152 u64 fw_ipv4_csum_support; 153 u64 fw_large_send_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 u64 tx_large_packets; 164 u64 rx_large_packets; 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_LRG_SND 0x04000000 185 #define IBMVETH_BUF_NO_CSUM 0x02000000 186 #define IBMVETH_BUF_CSUM_GOOD 0x01000000 187 #define IBMVETH_BUF_LEN_MASK 0x00FFFFFF 188 }; 189 190 union ibmveth_buf_desc { 191 u64 desc; 192 struct ibmveth_buf_desc_fields fields; 193 }; 194 195 struct ibmveth_rx_q_entry { 196 __be32 flags_off; 197 #define IBMVETH_RXQ_TOGGLE 0x80000000 198 #define IBMVETH_RXQ_TOGGLE_SHIFT 31 199 #define IBMVETH_RXQ_VALID 0x40000000 200 #define IBMVETH_RXQ_LRG_PKT 0x04000000 201 #define IBMVETH_RXQ_NO_CSUM 0x02000000 202 #define IBMVETH_RXQ_CSUM_GOOD 0x01000000 203 #define IBMVETH_RXQ_OFF_MASK 0x0000FFFF 204 205 __be32 length; 206 /* correlator is only used by the OS, no need to byte swap */ 207 u64 correlator; 208 }; 209 210 #endif /* _IBMVETH_H */ 211