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

   1 /*
   2  * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
   3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4  *
   5  * This program is free software; you may redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  10  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  11  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  12  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  13  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  14  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  15  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  16  * SOFTWARE.
  17  *
  18  */
  19
  20 #ifndef _ENIC_RES_H_
  21 #define _ENIC_RES_H_
  22
  23 #include "wq_enet_desc.h"
  24 #include "rq_enet_desc.h"
  25 #include "vnic_wq.h"
  26 #include "vnic_rq.h"
  27
  28 #define ENIC_MIN_WQ_DESCS               64
  29 #define ENIC_MAX_WQ_DESCS               4096
  30 #define ENIC_MIN_RQ_DESCS               64
  31 #define ENIC_MAX_RQ_DESCS               4096
  32
  33 #define ENIC_MIN_MTU                    ETH_MIN_MTU
  34 #define ENIC_MAX_MTU                    9000
  35
  36 #define ENIC_MULTICAST_PERFECT_FILTERS  32
  37 #define ENIC_UNICAST_PERFECT_FILTERS    32
  38
  39 #define ENIC_NON_TSO_MAX_DESC           16
  40
  41 #define ENIC_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
  42
  43 static inline void enic_queue_wq_desc_ex(struct vnic_wq *wq,
  44         void *os_buf, dma_addr_t dma_addr, unsigned int len,
  45         unsigned int mss_or_csum_offset, unsigned int hdr_len,
  46         int vlan_tag_insert, unsigned int vlan_tag,
  47         int offload_mode, int cq_entry, int sop, int eop, int loopback)
  48 {
  49         struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
  50         u8 desc_skip_cnt = 1;
  51         u8 compressed_send = 0;
  52         u64 wrid = 0;
  53
  54         wq_enet_desc_enc(desc,
  55                 (u64)dma_addr | VNIC_PADDR_TARGET,
  56                 (u16)len,
  57                 (u16)mss_or_csum_offset,
  58                 (u16)hdr_len, (u8)offload_mode,
  59                 (u8)eop, (u8)cq_entry,
  60                 0, /* fcoe_encap */
  61                 (u8)vlan_tag_insert,
  62                 (u16)vlan_tag,
  63                 (u8)loopback);
  64
  65         vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop, desc_skip_cnt,
  66                         (u8)cq_entry, compressed_send, wrid);
  67 }
  68
  69 static inline void enic_queue_wq_desc_cont(struct vnic_wq *wq,
  70         void *os_buf, dma_addr_t dma_addr, unsigned int len,
  71         int eop, int loopback)
  72 {
  73         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
  74                 0, 0, 0, 0, 0,
  75                 eop, 0 /* !SOP */, eop, loopback);
  76 }
  77
  78 static inline void enic_queue_wq_desc(struct vnic_wq *wq, void *os_buf,
  79         dma_addr_t dma_addr, unsigned int len, int vlan_tag_insert,
  80         unsigned int vlan_tag, int eop, int loopback)
  81 {
  82         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
  83                 0, 0, vlan_tag_insert, vlan_tag,
  84                 WQ_ENET_OFFLOAD_MODE_CSUM,
  85                 eop, 1 /* SOP */, eop, loopback);
  86 }
  87
  88 static inline void enic_queue_wq_desc_csum(struct vnic_wq *wq,
  89         void *os_buf, dma_addr_t dma_addr, unsigned int len,
  90         int ip_csum, int tcpudp_csum, int vlan_tag_insert,
  91         unsigned int vlan_tag, int eop, int loopback)
  92 {
  93         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
  94                 (ip_csum ? 1 : 0) + (tcpudp_csum ? 2 : 0),
  95                 0, vlan_tag_insert, vlan_tag,
  96                 WQ_ENET_OFFLOAD_MODE_CSUM,
  97                 eop, 1 /* SOP */, eop, loopback);
  98 }
  99
 100 static inline void enic_queue_wq_desc_csum_l4(struct vnic_wq *wq,
 101         void *os_buf, dma_addr_t dma_addr, unsigned int len,
 102         unsigned int csum_offset, unsigned int hdr_len,
 103         int vlan_tag_insert, unsigned int vlan_tag, int eop, int loopback)
 104 {
 105         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
 106                 csum_offset, hdr_len, vlan_tag_insert, vlan_tag,
 107                 WQ_ENET_OFFLOAD_MODE_CSUM_L4,
 108                 eop, 1 /* SOP */, eop, loopback);
 109 }
 110
 111 static inline void enic_queue_wq_desc_tso(struct vnic_wq *wq,
 112         void *os_buf, dma_addr_t dma_addr, unsigned int len,
 113         unsigned int mss, unsigned int hdr_len, int vlan_tag_insert,
 114         unsigned int vlan_tag, int eop, int loopback)
 115 {
 116         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
 117                 mss, hdr_len, vlan_tag_insert, vlan_tag,
 118                 WQ_ENET_OFFLOAD_MODE_TSO,
 119                 eop, 1 /* SOP */, eop, loopback);
 120 }
 121
 122 static inline void enic_queue_rq_desc(struct vnic_rq *rq,
 123         void *os_buf, unsigned int os_buf_index,
 124         dma_addr_t dma_addr, unsigned int len)
 125 {
 126         struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
 127         u64 wrid = 0;
 128         u8 type = os_buf_index ?
 129                 RQ_ENET_TYPE_NOT_SOP : RQ_ENET_TYPE_ONLY_SOP;
 130
 131         rq_enet_desc_enc(desc,
 132                 (u64)dma_addr | VNIC_PADDR_TARGET,
 133                 type, (u16)len);
 134
 135         vnic_rq_post(rq, os_buf, os_buf_index, dma_addr, len, wrid);
 136 }
 137
 138 struct enic;
 139
 140 int enic_get_vnic_config(struct enic *);
 141 int enic_add_vlan(struct enic *enic, u16 vlanid);
 142 int enic_del_vlan(struct enic *enic, u16 vlanid);
 143 int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
 144         u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
 145         u8 ig_vlan_strip_en);
 146 int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len);
 147 int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len);
 148 void enic_get_res_counts(struct enic *enic);
 149 void enic_init_vnic_resources(struct enic *enic);
 150 int enic_alloc_vnic_resources(struct enic *);
 151 void enic_free_vnic_resources(struct enic *);
 152
 153 #endif /* _ENIC_RES_H_ */