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_RX_MULTI_BUFF_SUPPORT 0x0000000000040000UL 32 #define IBMVETH_ILLAN_LRG_SR_ENABLED 0x0000000000010000UL 33 #define IBMVETH_ILLAN_LRG_SND_SUPPORT 0x0000000000008000UL 34 #define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000UL 35 #define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL 36 #define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL 37 #define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002UL 38 #define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001UL 39 40 /* hcall macros */ 41 #define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \ 42 plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac) 43 44 #define h_free_logical_lan(ua) \ 45 plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua) 46 47 #define h_add_logical_lan_buffer(ua, buf) \ 48 plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf) 49 50 static inline long h_add_logical_lan_buffers(unsigned long unit_address, 51 unsigned long desc1, 52 unsigned long desc2, 53 unsigned long desc3, 54 unsigned long desc4, 55 unsigned long desc5, 56 unsigned long desc6, 57 unsigned long desc7, 58 unsigned long desc8) 59 { 60 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; 61 62 return plpar_hcall9(H_ADD_LOGICAL_LAN_BUFFERS, 63 retbuf, unit_address, 64 desc1, desc2, desc3, desc4, 65 desc5, desc6, desc7, desc8); 66 } 67 68 /* FW allows us to send 6 descriptors but we only use one so mark 69 * the other 5 as unused (0) 70 */ 71 static inline long h_send_logical_lan(unsigned long unit_address, 72 unsigned long desc, unsigned long corellator_in, 73 unsigned long *corellator_out, unsigned long mss, 74 unsigned long large_send_support) 75 { 76 long rc; 77 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; 78 79 if (large_send_support) 80 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, 81 desc, 0, 0, 0, 0, 0, corellator_in, mss); 82 else 83 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, 84 desc, 0, 0, 0, 0, 0, corellator_in); 85 86 *corellator_out = retbuf[0]; 87 88 return rc; 89 } 90 91 static inline long h_illan_attributes(unsigned long unit_address, 92 unsigned long reset_mask, unsigned long set_mask, 93 unsigned long *ret_attributes) 94 { 95 long rc; 96 unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; 97 98 rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address, 99 reset_mask, set_mask); 100 101 *ret_attributes = retbuf[0]; 102 103 return rc; 104 } 105 106 #define h_multicast_ctrl(ua, cmd, mac) \ 107 plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac) 108 109 #define h_change_logical_lan_mac(ua, mac) \ 110 plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac) 111 112 #define IBMVETH_NUM_BUFF_POOLS 5 113 #define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */ 114 #define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */ 115 #define IBMVETH_MIN_MTU 68 116 #define IBMVETH_MAX_POOL_COUNT 4096 117 #define IBMVETH_BUFF_LIST_SIZE 4096 118 #define IBMVETH_FILT_LIST_SIZE 4096 119 #define IBMVETH_MAX_BUF_SIZE (1024 * 128) 120 #define IBMVETH_MAX_TX_BUF_SIZE (1024 * 64) 121 #define IBMVETH_MAX_QUEUES 16U 122 #define IBMVETH_DEFAULT_QUEUES 8U 123 #define IBMVETH_MAX_RX_PER_HCALL 8U 124 125 static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 }; 126 static int pool_count[] = { 256, 512, 256, 256, 256 }; 127 static int pool_count_cmo[] = { 256, 512, 256, 256, 64 }; 128 static int pool_active[] = { 1, 1, 0, 0, 1}; 129 130 #define IBM_VETH_INVALID_MAP ((u16)0xffff) 131 132 struct ibmveth_buff_pool { 133 u32 size; 134 u32 index; 135 u32 buff_size; 136 u32 threshold; 137 atomic_t available; 138 u32 consumer_index; 139 u32 producer_index; 140 u16 *free_map; 141 dma_addr_t *dma_addr; 142 struct sk_buff **skbuff; 143 int active; 144 struct kobject kobj; 145 }; 146 147 struct ibmveth_rx_q { 148 u64 index; 149 u64 num_slots; 150 u64 toggle; 151 dma_addr_t queue_dma; 152 u32 queue_len; 153 struct ibmveth_rx_q_entry *queue_addr; 154 }; 155 156 struct ibmveth_adapter { 157 struct vio_dev *vdev; 158 struct net_device *netdev; 159 struct napi_struct napi; 160 struct work_struct work; 161 unsigned int mcastFilterSize; 162 void *buffer_list_addr; 163 void *filter_list_addr; 164 void *tx_ltb_ptr[IBMVETH_MAX_QUEUES]; 165 unsigned int tx_ltb_size; 166 dma_addr_t tx_ltb_dma[IBMVETH_MAX_QUEUES]; 167 dma_addr_t buffer_list_dma; 168 dma_addr_t filter_list_dma; 169 struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS]; 170 struct ibmveth_rx_q rx_queue; 171 int rx_csum; 172 int large_send; 173 bool is_active_trunk; 174 unsigned int rx_buffers_per_hcall; 175 176 u64 fw_ipv6_csum_support; 177 u64 fw_ipv4_csum_support; 178 u64 fw_large_send_support; 179 /* adapter specific stats */ 180 u64 replenish_task_cycles; 181 u64 replenish_no_mem; 182 u64 replenish_add_buff_failure; 183 u64 replenish_add_buff_success; 184 u64 rx_invalid_buffer; 185 u64 rx_no_buffer; 186 u64 tx_map_failed; 187 u64 tx_send_failed; 188 u64 tx_large_packets; 189 u64 rx_large_packets; 190 /* Ethtool settings */ 191 u8 duplex; 192 u32 speed; 193 }; 194 195 /* 196 * We pass struct ibmveth_buf_desc_fields to the hypervisor in registers, 197 * so we don't need to byteswap the two elements. However since we use 198 * a union (ibmveth_buf_desc) to convert from the struct to a u64 we 199 * do end up with endian specific ordering of the elements and that 200 * needs correcting. 201 */ 202 struct ibmveth_buf_desc_fields { 203 #ifdef __BIG_ENDIAN 204 u32 flags_len; 205 u32 address; 206 #else 207 u32 address; 208 u32 flags_len; 209 #endif 210 #define IBMVETH_BUF_VALID 0x80000000 211 #define IBMVETH_BUF_TOGGLE 0x40000000 212 #define IBMVETH_BUF_LRG_SND 0x04000000 213 #define IBMVETH_BUF_NO_CSUM 0x02000000 214 #define IBMVETH_BUF_CSUM_GOOD 0x01000000 215 #define IBMVETH_BUF_LEN_MASK 0x00FFFFFF 216 }; 217 218 union ibmveth_buf_desc { 219 u64 desc; 220 struct ibmveth_buf_desc_fields fields; 221 }; 222 223 struct ibmveth_rx_q_entry { 224 __be32 flags_off; 225 #define IBMVETH_RXQ_TOGGLE 0x80000000 226 #define IBMVETH_RXQ_TOGGLE_SHIFT 31 227 #define IBMVETH_RXQ_VALID 0x40000000 228 #define IBMVETH_RXQ_LRG_PKT 0x04000000 229 #define IBMVETH_RXQ_NO_CSUM 0x02000000 230 #define IBMVETH_RXQ_CSUM_GOOD 0x01000000 231 #define IBMVETH_RXQ_OFF_MASK 0x0000FFFF 232 233 __be32 length; 234 /* correlator is only used by the OS, no need to byte swap */ 235 u64 correlator; 236 }; 237 238 #endif /* _IBMVETH_H */ 239