217 lines
6.4 KiB
C
217 lines
6.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* IBM Power Virtual Ethernet Device Driver
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*
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* Copyright (C) IBM Corporation, 2003, 2010
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*
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* Authors: Dave Larson <larson1@us.ibm.com>
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* Santiago Leon <santil@linux.vnet.ibm.com>
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* Brian King <brking@linux.vnet.ibm.com>
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* Robert Jennings <rcj@linux.vnet.ibm.com>
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* Anton Blanchard <anton@au.ibm.com>
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*/
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#ifndef _IBMVETH_H
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#define _IBMVETH_H
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/* constants for H_MULTICAST_CTRL */
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#define IbmVethMcastReceptionModifyBit 0x80000UL
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#define IbmVethMcastReceptionEnableBit 0x20000UL
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#define IbmVethMcastFilterModifyBit 0x40000UL
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#define IbmVethMcastFilterEnableBit 0x10000UL
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#define IbmVethMcastEnableRecv (IbmVethMcastReceptionModifyBit | IbmVethMcastReceptionEnableBit)
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#define IbmVethMcastDisableRecv (IbmVethMcastReceptionModifyBit)
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#define IbmVethMcastEnableFiltering (IbmVethMcastFilterModifyBit | IbmVethMcastFilterEnableBit)
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#define IbmVethMcastDisableFiltering (IbmVethMcastFilterModifyBit)
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#define IbmVethMcastAddFilter 0x1UL
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#define IbmVethMcastRemoveFilter 0x2UL
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#define IbmVethMcastClearFilterTable 0x3UL
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#define IBMVETH_ILLAN_LRG_SR_ENABLED 0x0000000000010000UL
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#define IBMVETH_ILLAN_LRG_SND_SUPPORT 0x0000000000008000UL
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#define IBMVETH_ILLAN_PADDED_PKT_CSUM 0x0000000000002000UL
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#define IBMVETH_ILLAN_TRUNK_PRI_MASK 0x0000000000000F00UL
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#define IBMVETH_ILLAN_IPV6_TCP_CSUM 0x0000000000000004UL
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#define IBMVETH_ILLAN_IPV4_TCP_CSUM 0x0000000000000002UL
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#define IBMVETH_ILLAN_ACTIVE_TRUNK 0x0000000000000001UL
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/* hcall macros */
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#define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \
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plpar_hcall_norets(H_REGISTER_LOGICAL_LAN, ua, buflst, rxq, fltlst, mac)
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#define h_free_logical_lan(ua) \
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plpar_hcall_norets(H_FREE_LOGICAL_LAN, ua)
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#define h_add_logical_lan_buffer(ua, buf) \
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plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
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/* FW allows us to send 6 descriptors but we only use one so mark
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* the other 5 as unused (0)
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*/
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static inline long h_send_logical_lan(unsigned long unit_address,
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unsigned long desc, unsigned long corellator_in,
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unsigned long *corellator_out, unsigned long mss,
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unsigned long large_send_support)
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{
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long rc;
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unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
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if (large_send_support)
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rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
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desc, 0, 0, 0, 0, 0, corellator_in, mss);
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else
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rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address,
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desc, 0, 0, 0, 0, 0, corellator_in);
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*corellator_out = retbuf[0];
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return rc;
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}
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static inline long h_illan_attributes(unsigned long unit_address,
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unsigned long reset_mask, unsigned long set_mask,
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unsigned long *ret_attributes)
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{
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long rc;
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unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
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rc = plpar_hcall(H_ILLAN_ATTRIBUTES, retbuf, unit_address,
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reset_mask, set_mask);
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*ret_attributes = retbuf[0];
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return rc;
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}
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#define h_multicast_ctrl(ua, cmd, mac) \
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plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
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#define h_change_logical_lan_mac(ua, mac) \
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plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac)
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#define IBMVETH_NUM_BUFF_POOLS 5
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#define IBMVETH_IO_ENTITLEMENT_DEFAULT 4243456 /* MTU of 1500 needs 4.2Mb */
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#define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */
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#define IBMVETH_MIN_MTU 68
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#define IBMVETH_MAX_POOL_COUNT 4096
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#define IBMVETH_BUFF_LIST_SIZE 4096
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#define IBMVETH_FILT_LIST_SIZE 4096
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#define IBMVETH_MAX_BUF_SIZE (1024 * 128)
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#define IBMVETH_MAX_TX_BUF_SIZE (1024 * 64)
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#define IBMVETH_MAX_QUEUES 16U
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#define IBMVETH_DEFAULT_QUEUES 8U
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static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 };
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static int pool_count[] = { 256, 512, 256, 256, 256 };
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static int pool_count_cmo[] = { 256, 512, 256, 256, 64 };
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static int pool_active[] = { 1, 1, 0, 0, 1};
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#define IBM_VETH_INVALID_MAP ((u16)0xffff)
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struct ibmveth_buff_pool {
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u32 size;
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u32 index;
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u32 buff_size;
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u32 threshold;
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atomic_t available;
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u32 consumer_index;
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u32 producer_index;
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u16 *free_map;
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dma_addr_t *dma_addr;
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struct sk_buff **skbuff;
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int active;
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struct kobject kobj;
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};
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struct ibmveth_rx_q {
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u64 index;
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u64 num_slots;
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u64 toggle;
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dma_addr_t queue_dma;
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u32 queue_len;
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struct ibmveth_rx_q_entry *queue_addr;
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};
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struct ibmveth_adapter {
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struct vio_dev *vdev;
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struct net_device *netdev;
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struct napi_struct napi;
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unsigned int mcastFilterSize;
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void * buffer_list_addr;
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void * filter_list_addr;
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void *tx_ltb_ptr[IBMVETH_MAX_QUEUES];
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unsigned int tx_ltb_size;
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dma_addr_t tx_ltb_dma[IBMVETH_MAX_QUEUES];
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dma_addr_t buffer_list_dma;
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dma_addr_t filter_list_dma;
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struct ibmveth_buff_pool rx_buff_pool[IBMVETH_NUM_BUFF_POOLS];
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struct ibmveth_rx_q rx_queue;
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int rx_csum;
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int large_send;
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bool is_active_trunk;
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u64 fw_ipv6_csum_support;
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u64 fw_ipv4_csum_support;
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u64 fw_large_send_support;
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/* adapter specific stats */
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u64 replenish_task_cycles;
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u64 replenish_no_mem;
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u64 replenish_add_buff_failure;
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u64 replenish_add_buff_success;
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u64 rx_invalid_buffer;
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u64 rx_no_buffer;
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u64 tx_map_failed;
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u64 tx_send_failed;
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u64 tx_large_packets;
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u64 rx_large_packets;
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/* Ethtool settings */
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u8 duplex;
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u32 speed;
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};
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/*
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* We pass struct ibmveth_buf_desc_fields to the hypervisor in registers,
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* so we don't need to byteswap the two elements. However since we use
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* a union (ibmveth_buf_desc) to convert from the struct to a u64 we
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* do end up with endian specific ordering of the elements and that
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* needs correcting.
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*/
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struct ibmveth_buf_desc_fields {
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#ifdef __BIG_ENDIAN
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u32 flags_len;
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u32 address;
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#else
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u32 address;
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u32 flags_len;
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#endif
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#define IBMVETH_BUF_VALID 0x80000000
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#define IBMVETH_BUF_TOGGLE 0x40000000
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#define IBMVETH_BUF_LRG_SND 0x04000000
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#define IBMVETH_BUF_NO_CSUM 0x02000000
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#define IBMVETH_BUF_CSUM_GOOD 0x01000000
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#define IBMVETH_BUF_LEN_MASK 0x00FFFFFF
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};
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union ibmveth_buf_desc {
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u64 desc;
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struct ibmveth_buf_desc_fields fields;
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};
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struct ibmveth_rx_q_entry {
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__be32 flags_off;
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#define IBMVETH_RXQ_TOGGLE 0x80000000
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#define IBMVETH_RXQ_TOGGLE_SHIFT 31
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#define IBMVETH_RXQ_VALID 0x40000000
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#define IBMVETH_RXQ_LRG_PKT 0x04000000
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#define IBMVETH_RXQ_NO_CSUM 0x02000000
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#define IBMVETH_RXQ_CSUM_GOOD 0x01000000
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#define IBMVETH_RXQ_OFF_MASK 0x0000FFFF
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__be32 length;
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/* correlator is only used by the OS, no need to byte swap */
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u64 correlator;
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};
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#endif /* _IBMVETH_H */
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