drivers/net/ethernet/cisco/enic/enic_res.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
   4  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   5  */
   6
   7 #ifndef _ENIC_RES_H_
   8 #define _ENIC_RES_H_
   9
  10 #include "wq_enet_desc.h"
  11 #include "rq_enet_desc.h"
  12 #include "vnic_wq.h"
  13 #include "vnic_rq.h"
  14
  15 #define ENIC_MIN_WQ_DESCS               64
  16 #define ENIC_MAX_WQ_DESCS               4096
  17 #define ENIC_MIN_RQ_DESCS               64
  18 #define ENIC_MAX_RQ_DESCS               4096
  19
  20 #define ENIC_MIN_MTU                    ETH_MIN_MTU
  21 #define ENIC_MAX_MTU                    9000
  22
  23 #define ENIC_MULTICAST_PERFECT_FILTERS  32
  24 #define ENIC_UNICAST_PERFECT_FILTERS    32
  25
  26 #define ENIC_NON_TSO_MAX_DESC           16
  27
  28 #define ENIC_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
  29
  30 static inline void enic_queue_wq_desc_ex(struct vnic_wq *wq,
  31         void *os_buf, dma_addr_t dma_addr, unsigned int len,
  32         unsigned int mss_or_csum_offset, unsigned int hdr_len,
  33         int vlan_tag_insert, unsigned int vlan_tag,
  34         int offload_mode, int cq_entry, int sop, int eop, int loopback)
  35 {
  36         struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
  37         u8 desc_skip_cnt = 1;
  38         u8 compressed_send = 0;
  39         u64 wrid = 0;
  40
  41         wq_enet_desc_enc(desc,
  42                 (u64)dma_addr | VNIC_PADDR_TARGET,
  43                 (u16)len,
  44                 (u16)mss_or_csum_offset,
  45                 (u16)hdr_len, (u8)offload_mode,
  46                 (u8)eop, (u8)cq_entry,
  47                 0, /* fcoe_encap */
  48                 (u8)vlan_tag_insert,
  49                 (u16)vlan_tag,
  50                 (u8)loopback);
  51
  52         vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop, desc_skip_cnt,
  53                         (u8)cq_entry, compressed_send, wrid);
  54 }
  55
  56 static inline void enic_queue_wq_desc_cont(struct vnic_wq *wq,
  57         void *os_buf, dma_addr_t dma_addr, unsigned int len,
  58         int eop, int loopback)
  59 {
  60         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
  61                 0, 0, 0, 0, 0,
  62                 eop, 0 /* !SOP */, eop, loopback);
  63 }
  64
  65 static inline void enic_queue_wq_desc(struct vnic_wq *wq, void *os_buf,
  66         dma_addr_t dma_addr, unsigned int len, int vlan_tag_insert,
  67         unsigned int vlan_tag, int eop, int loopback)
  68 {
  69         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
  70                 0, 0, vlan_tag_insert, vlan_tag,
  71                 WQ_ENET_OFFLOAD_MODE_CSUM,
  72                 eop, 1 /* SOP */, eop, loopback);
  73 }
  74
  75 static inline void enic_queue_wq_desc_csum(struct vnic_wq *wq,
  76         void *os_buf, dma_addr_t dma_addr, unsigned int len,
  77         int ip_csum, int tcpudp_csum, int vlan_tag_insert,
  78         unsigned int vlan_tag, int eop, int loopback)
  79 {
  80         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
  81                 (ip_csum ? 1 : 0) + (tcpudp_csum ? 2 : 0),
  82                 0, vlan_tag_insert, vlan_tag,
  83                 WQ_ENET_OFFLOAD_MODE_CSUM,
  84                 eop, 1 /* SOP */, eop, loopback);
  85 }
  86
  87 static inline void enic_queue_wq_desc_csum_l4(struct vnic_wq *wq,
  88         void *os_buf, dma_addr_t dma_addr, unsigned int len,
  89         unsigned int csum_offset, unsigned int hdr_len,
  90         int vlan_tag_insert, unsigned int vlan_tag, int eop, int loopback)
  91 {
  92         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
  93                 csum_offset, hdr_len, vlan_tag_insert, vlan_tag,
  94                 WQ_ENET_OFFLOAD_MODE_CSUM_L4,
  95                 eop, 1 /* SOP */, eop, loopback);
  96 }
  97
  98 static inline void enic_queue_wq_desc_tso(struct vnic_wq *wq,
  99         void *os_buf, dma_addr_t dma_addr, unsigned int len,
 100         unsigned int mss, unsigned int hdr_len, int vlan_tag_insert,
 101         unsigned int vlan_tag, int eop, int loopback)
 102 {
 103         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
 104                 mss, hdr_len, vlan_tag_insert, vlan_tag,
 105                 WQ_ENET_OFFLOAD_MODE_TSO,
 106                 eop, 1 /* SOP */, eop, loopback);
 107 }
 108
 109 static inline void enic_queue_rq_desc(struct vnic_rq *rq,
 110         void *os_buf, unsigned int os_buf_index,
 111         dma_addr_t dma_addr, unsigned int len)
 112 {
 113         struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
 114         u64 wrid = 0;
 115         u8 type = os_buf_index ?
 116                 RQ_ENET_TYPE_NOT_SOP : RQ_ENET_TYPE_ONLY_SOP;
 117
 118         rq_enet_desc_enc(desc,
 119                 (u64)dma_addr | VNIC_PADDR_TARGET,
 120                 type, (u16)len);
 121
 122         vnic_rq_post(rq, os_buf, os_buf_index, dma_addr, len, wrid);
 123 }
 124
 125 struct enic;
 126
 127 int enic_get_vnic_config(struct enic *);
 128 int enic_add_vlan(struct enic *enic, u16 vlanid);
 129 int enic_del_vlan(struct enic *enic, u16 vlanid);
 130 int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
 131         u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
 132         u8 ig_vlan_strip_en);
 133 int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len);
 134 int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len);
 135 void enic_get_res_counts(struct enic *enic);
 136 void enic_init_vnic_resources(struct enic *enic);
 137 int enic_alloc_vnic_resources(struct enic *);
 138 void enic_free_vnic_resources(struct enic *);
 139
 140 #endif /* _ENIC_RES_H_ */