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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * IBM Power Virtual Ethernet Device Driver4 *5 * Copyright (C) IBM Corporation, 2003, 20106 *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_H15#define _IBMVETH_H16 17/* constants for H_MULTICAST_CTRL */18#define IbmVethMcastReceptionModifyBit 0x80000UL19#define IbmVethMcastReceptionEnableBit 0x20000UL20#define IbmVethMcastFilterModifyBit 0x40000UL21#define IbmVethMcastFilterEnableBit 0x10000UL22 23#define IbmVethMcastEnableRecv (IbmVethMcastReceptionModifyBit | IbmVethMcastReceptionEnableBit)24#define IbmVethMcastDisableRecv (IbmVethMcastReceptionModifyBit)25#define IbmVethMcastEnableFiltering (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit)26#define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)27#define IbmVethMcastAddFilter 0x1UL28#define IbmVethMcastRemoveFilter 0x2UL29#define IbmVethMcastClearFilterTable 0x3UL30 31#define IBMVETH_ILLAN_LRG_SR_ENABLED 0x0000000000010000UL32#define IBMVETH_ILLAN_LRG_SND_SUPPORT 0x0000000000008000UL33#define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000UL34#define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL35#define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL36#define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002UL37#define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001UL38 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/* FW allows us to send 6 descriptors but we only use one so mark50 * the other 5 as unused (0)51 */52static inline long h_send_logical_lan(unsigned long unit_address,53 unsigned long desc, unsigned long corellator_in,54 unsigned long *corellator_out, unsigned long mss,55 unsigned long large_send_support)56{57 long rc;58 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];59 60 if (large_send_support)61 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,62 desc, 0, 0, 0, 0, 0, corellator_in, mss);63 else64 rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,65 desc, 0, 0, 0, 0, 0, corellator_in);66 67 *corellator_out = retbuf[0];68 69 return rc;70}71 72static 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 594#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 6897#define IBMVETH_MAX_POOL_COUNT 409698#define IBMVETH_BUFF_LIST_SIZE 409699#define IBMVETH_FILT_LIST_SIZE 4096100#define IBMVETH_MAX_BUF_SIZE (1024 * 128)101#define IBMVETH_MAX_TX_BUF_SIZE (1024 * 64)102#define IBMVETH_MAX_QUEUES 16U103#define IBMVETH_DEFAULT_QUEUES 8U104 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_count_cmo[] = { 256, 512, 256, 256, 64 };108static int pool_active[] = { 1, 1, 0, 0, 1};109 110#define IBM_VETH_INVALID_MAP ((u16)0xffff)111 112struct 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 127struct 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 136struct ibmveth_adapter {137 struct vio_dev *vdev;138 struct net_device *netdev;139 struct napi_struct napi;140 unsigned int mcastFilterSize;141 void * buffer_list_addr;142 void * filter_list_addr;143 void *tx_ltb_ptr[IBMVETH_MAX_QUEUES];144 unsigned int tx_ltb_size;145 dma_addr_t tx_ltb_dma[IBMVETH_MAX_QUEUES];146 dma_addr_t buffer_list_dma;147 dma_addr_t filter_list_dma;148 struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];149 struct ibmveth_rx_q rx_queue;150 int rx_csum;151 int large_send;152 bool is_active_trunk;153 154 u64 fw_ipv6_csum_support;155 u64 fw_ipv4_csum_support;156 u64 fw_large_send_support;157 /* adapter specific stats */158 u64 replenish_task_cycles;159 u64 replenish_no_mem;160 u64 replenish_add_buff_failure;161 u64 replenish_add_buff_success;162 u64 rx_invalid_buffer;163 u64 rx_no_buffer;164 u64 tx_map_failed;165 u64 tx_send_failed;166 u64 tx_large_packets;167 u64 rx_large_packets;168 /* Ethtool settings */169 u8 duplex;170 u32 speed;171};172 173/*174 * We pass struct ibmveth_buf_desc_fields to the hypervisor in registers,175 * so we don't need to byteswap the two elements. However since we use176 * a union (ibmveth_buf_desc) to convert from the struct to a u64 we177 * do end up with endian specific ordering of the elements and that178 * needs correcting.179 */180struct ibmveth_buf_desc_fields {181#ifdef __BIG_ENDIAN182 u32 flags_len;183 u32 address;184#else185 u32 address;186 u32 flags_len;187#endif188#define IBMVETH_BUF_VALID 0x80000000189#define IBMVETH_BUF_TOGGLE 0x40000000190#define IBMVETH_BUF_LRG_SND 0x04000000191#define IBMVETH_BUF_NO_CSUM 0x02000000192#define IBMVETH_BUF_CSUM_GOOD 0x01000000193#define IBMVETH_BUF_LEN_MASK 0x00FFFFFF194};195 196union ibmveth_buf_desc {197 u64 desc;198 struct ibmveth_buf_desc_fields fields;199};200 201struct ibmveth_rx_q_entry {202 __be32 flags_off;203#define IBMVETH_RXQ_TOGGLE 0x80000000204#define IBMVETH_RXQ_TOGGLE_SHIFT 31205#define IBMVETH_RXQ_VALID 0x40000000206#define IBMVETH_RXQ_LRG_PKT 0x04000000207#define IBMVETH_RXQ_NO_CSUM 0x02000000208#define IBMVETH_RXQ_CSUM_GOOD 0x01000000209#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF210 211 __be32 length;212 /* correlator is only used by the OS, no need to byte swap */213 u64 correlator;214};215 216#endif /* _IBMVETH_H */217