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
 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
 65static 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
 74static 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
 84static 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
 96static 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
107static 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
118static 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
133struct enic;
134
135int enic_get_vnic_config(struct enic *);
136int enic_add_vlan(struct enic *enic, u16 vlanid);
137int enic_del_vlan(struct enic *enic, u16 vlanid);
138int 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);
141int enic_set_rss_key(struct enic *enic, dma_addr_t key_pa, u64 len);
142int enic_set_rss_cpu(struct enic *enic, dma_addr_t cpu_pa, u64 len);
143void enic_get_res_counts(struct enic *enic);
144void enic_init_vnic_resources(struct enic *enic);
145int enic_alloc_vnic_resources(struct enic *);
146void enic_free_vnic_resources(struct enic *);
147
148#endif /* _ENIC_RES_H_ */