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 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_ */ 154