LXR linux/drivers/net/ethernet/cisco/enic/enic

   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                    68
  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
  43static 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
  69static 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
  78static 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
  88static 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
 100static 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
 111static 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
 122static 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
 138struct enic;
 139
 140int enic_get_vnic_config(struct enic *);
 141int enic_add_vlan(struct enic *enic, u16 vlanid);
 142int enic_del_vlan(struct enic *enic, u16 vlanid);
 143int 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);
 146int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len);
 147int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len);
 148void enic_get_res_counts(struct enic *enic);
 149void enic_init_vnic_resources(struct enic *enic);
 150int enic_alloc_vnic_resources(struct enic *);
 151void enic_free_vnic_resources(struct enic *);
 152
 153#endif /* _ENIC_RES_H_ */
 154