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 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 51 wq_enet_desc_enc(desc, 52 (u64)dma_addr | VNIC_PADDR_TARGET, 53 (u16)len, 54 (u16)mss_or_csum_offset, 55 (u16)hdr_len, (u8)offload_mode, 56 (u8)eop, (u8)cq_entry, 57 0, /* fcoe_encap */ 58 (u8)vlan_tag_insert, 59 (u16)vlan_tag, 60 (u8)loopback); 61 62 vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop); 63 } 64 65 static inline void enic_queue_wq_desc_cont(struct vnic_wq *wq, 66 void *os_buf, dma_addr_t dma_addr, unsigned int len, 67 int eop, int loopback) 68 { 69 enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, 70 0, 0, 0, 0, 0, 71 eop, 0 /* !SOP */, eop, loopback); 72 } 73 74 static inline void enic_queue_wq_desc(struct vnic_wq *wq, void *os_buf, 75 dma_addr_t dma_addr, unsigned int len, int vlan_tag_insert, 76 unsigned int vlan_tag, int eop, int loopback) 77 { 78 enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, 79 0, 0, vlan_tag_insert, vlan_tag, 80 WQ_ENET_OFFLOAD_MODE_CSUM, 81 eop, 1 /* SOP */, eop, loopback); 82 } 83 84 static inline void enic_queue_wq_desc_csum(struct vnic_wq *wq, 85 void *os_buf, dma_addr_t dma_addr, unsigned int len, 86 int ip_csum, int tcpudp_csum, int vlan_tag_insert, 87 unsigned int vlan_tag, int eop, int loopback) 88 { 89 enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, 90 (ip_csum ? 1 : 0) + (tcpudp_csum ? 2 : 0), 91 0, vlan_tag_insert, vlan_tag, 92 WQ_ENET_OFFLOAD_MODE_CSUM, 93 eop, 1 /* SOP */, eop, loopback); 94 } 95 96 static inline void enic_queue_wq_desc_csum_l4(struct vnic_wq *wq, 97 void *os_buf, dma_addr_t dma_addr, unsigned int len, 98 unsigned int csum_offset, unsigned int hdr_len, 99 int vlan_tag_insert, unsigned int vlan_tag, int eop, int loopback) 100 { 101 enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, 102 csum_offset, hdr_len, vlan_tag_insert, vlan_tag, 103 WQ_ENET_OFFLOAD_MODE_CSUM_L4, 104 eop, 1 /* SOP */, eop, loopback); 105 } 106 107 static inline void enic_queue_wq_desc_tso(struct vnic_wq *wq, 108 void *os_buf, dma_addr_t dma_addr, unsigned int len, 109 unsigned int mss, unsigned int hdr_len, int vlan_tag_insert, 110 unsigned int vlan_tag, int eop, int loopback) 111 { 112 enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len, 113 mss, hdr_len, vlan_tag_insert, vlan_tag, 114 WQ_ENET_OFFLOAD_MODE_TSO, 115 eop, 1 /* SOP */, eop, loopback); 116 } 117 118 static inline void enic_queue_rq_desc(struct vnic_rq *rq, 119 void *os_buf, unsigned int os_buf_index, 120 dma_addr_t dma_addr, unsigned int len) 121 { 122 struct rq_enet_desc *desc = vnic_rq_next_desc(rq); 123 u8 type = os_buf_index ? 124 RQ_ENET_TYPE_NOT_SOP : RQ_ENET_TYPE_ONLY_SOP; 125 126 rq_enet_desc_enc(desc, 127 (u64)dma_addr | VNIC_PADDR_TARGET, 128 type, (u16)len); 129 130 vnic_rq_post(rq, os_buf, os_buf_index, dma_addr, len); 131 } 132 133 struct enic; 134 135 int enic_get_vnic_config(struct enic *); 136 int enic_add_vlan(struct enic *enic, u16 vlanid); 137 int enic_del_vlan(struct enic *enic, u16 vlanid); 138 int enic_set_nic_cfg(struct enic *enic, u8 rss_default_cpu, u8 rss_hash_type, 139 u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable, u8 tso_ipid_split_en, 140 u8 ig_vlan_strip_en); 141 int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len); 142 int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len); 143 void enic_get_res_counts(struct enic *enic); 144 void enic_init_vnic_resources(struct enic *enic); 145 int enic_alloc_vnic_resources(struct enic *); 146 void enic_free_vnic_resources(struct enic *); 147 148 #endif /* _ENIC_RES_H_ */ 149