drivers/net/enic/enic_res.h

   1 /*
   2  * Copyright 2008 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                    576  /* minimum for IPv4 */
  34 #define ENIC_MAX_MTU                    9000
  35
  36 #define ENIC_MULTICAST_PERFECT_FILTERS  32
  37
  38 #define ENIC_NON_TSO_MAX_DESC           16
  39
  40 #define ENIC_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
  41
  42 static inline void enic_queue_wq_desc_ex(struct vnic_wq *wq,
  43         void *os_buf, dma_addr_t dma_addr, unsigned int len,
  44         unsigned int mss_or_csum_offset, unsigned int hdr_len,
  45         int vlan_tag_insert, unsigned int vlan_tag,
  46         int offload_mode, int cq_entry, int sop, int eop)
  47 {
  48         struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
  49
  50         wq_enet_desc_enc(desc,
  51                 (u64)dma_addr | VNIC_PADDR_TARGET,
  52                 (u16)len,
  53                 (u16)mss_or_csum_offset,
  54                 (u16)hdr_len, (u8)offload_mode,
  55                 (u8)eop, (u8)cq_entry,
  56                 0, /* fcoe_encap */
  57                 (u8)vlan_tag_insert,
  58                 (u16)vlan_tag,
  59                 0 /* loopback */);
  60
  61         vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop);
  62 }
  63
  64 static inline void enic_queue_wq_desc_cont(struct vnic_wq *wq,
  65         void *os_buf, dma_addr_t dma_addr, unsigned int len, int eop)
  66 {
  67         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
  68                 0, 0, 0, 0, 0,
  69                 eop, 0 /* !SOP */, eop);
  70 }
  71
  72 static inline void enic_queue_wq_desc(struct vnic_wq *wq, void *os_buf,
  73         dma_addr_t dma_addr, unsigned int len, int vlan_tag_insert,
  74         unsigned int vlan_tag, int eop)
  75 {
  76         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
  77                 0, 0, vlan_tag_insert, vlan_tag,
  78                 WQ_ENET_OFFLOAD_MODE_CSUM,
  79                 eop, 1 /* SOP */, eop);
  80 }
  81
  82 static inline void enic_queue_wq_desc_csum(struct vnic_wq *wq,
  83         void *os_buf, dma_addr_t dma_addr, unsigned int len,
  84         int ip_csum, int tcpudp_csum, int vlan_tag_insert,
  85         unsigned int vlan_tag, int eop)
  86 {
  87         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
  88                 (ip_csum ? 1 : 0) + (tcpudp_csum ? 2 : 0),
  89                 0, vlan_tag_insert, vlan_tag,
  90                 WQ_ENET_OFFLOAD_MODE_CSUM,
  91                 eop, 1 /* SOP */, eop);
  92 }
  93
  94 static inline void enic_queue_wq_desc_csum_l4(struct vnic_wq *wq,
  95         void *os_buf, dma_addr_t dma_addr, unsigned int len,
  96         unsigned int csum_offset, unsigned int hdr_len,
  97         int vlan_tag_insert, unsigned int vlan_tag, int eop)
  98 {
  99         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
 100                 csum_offset, hdr_len, vlan_tag_insert, vlan_tag,
 101                 WQ_ENET_OFFLOAD_MODE_CSUM_L4,
 102                 eop, 1 /* SOP */, eop);
 103 }
 104
 105 static inline void enic_queue_wq_desc_tso(struct vnic_wq *wq,
 106         void *os_buf, dma_addr_t dma_addr, unsigned int len,
 107         unsigned int mss, unsigned int hdr_len, int vlan_tag_insert,
 108         unsigned int vlan_tag, int eop)
 109 {
 110         enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
 111                 mss, hdr_len, vlan_tag_insert, vlan_tag,
 112                 WQ_ENET_OFFLOAD_MODE_TSO,
 113                 eop, 1 /* SOP */, eop);
 114 }
 115
 116 static inline void enic_queue_rq_desc(struct vnic_rq *rq,
 117         void *os_buf, unsigned int os_buf_index,
 118         dma_addr_t dma_addr, unsigned int len)
 119 {
 120         struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
 121         u8 type = os_buf_index ?
 122                 RQ_ENET_TYPE_NOT_SOP : RQ_ENET_TYPE_ONLY_SOP;
 123
 124         rq_enet_desc_enc(desc,
 125                 (u64)dma_addr | VNIC_PADDR_TARGET,
 126                 type, (u16)len);
 127
 128         vnic_rq_post(rq, os_buf, os_buf_index, dma_addr, len);
 129 }
 130
 131 struct enic;
 132
 133 int enic_get_vnic_config(struct enic *);
 134 void enic_add_station_addr(struct enic *enic);
 135 void enic_add_multicast_addr(struct enic *enic, u8 *addr);
 136 void enic_del_multicast_addr(struct enic *enic, u8 *addr);
 137 void enic_add_vlan(struct enic *enic, u16 vlanid);
 138 void enic_del_vlan(struct enic *enic, u16 vlanid);
 139 int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type,
 140         u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en,
 141         u8 ig_vlan_strip_en);
 142 void enic_get_res_counts(struct enic *enic);
 143 void enic_init_vnic_resources(struct enic *enic);
 144 int enic_alloc_vnic_resources(struct enic *);
 145 void enic_free_vnic_resources(struct enic *);
 146
 147 #endif /* _ENIC_RES_H_ */