[deliverable/linux.git] / drivers / net / enic / cq_enet_desc.h

/*
 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
 *
 * This program is free software; you may redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#ifndef _CQ_ENET_DESC_H_
#define _CQ_ENET_DESC_H_

#include "cq_desc.h"

/* Ethernet completion queue descriptor: 16B */
struct cq_enet_wq_desc {
	__le16 completed_index;
	__le16 q_number;
	u8 reserved[11];
	u8 type_color;
};

static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc,
	u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
{
	cq_desc_dec((struct cq_desc *)desc, type,
		color, q_number, completed_index);
}

/* Completion queue descriptor: Ethernet receive queue, 16B */
struct cq_enet_rq_desc {
	__le16 completed_index_flags;
	__le16 q_number_rss_type_flags;
	__le32 rss_hash;
	__le16 bytes_written_flags;
	__le16 vlan;
	__le16 checksum_fcoe;
	u8 flags;
	u8 type_color;
};

#define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT          (0x1 << 12)
#define CQ_ENET_RQ_DESC_FLAGS_FCOE                  (0x1 << 13)
#define CQ_ENET_RQ_DESC_FLAGS_EOP                   (0x1 << 14)
#define CQ_ENET_RQ_DESC_FLAGS_SOP                   (0x1 << 15)

#define CQ_ENET_RQ_DESC_RSS_TYPE_BITS               4
#define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \
	((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1)
#define CQ_ENET_RQ_DESC_RSS_TYPE_NONE               0
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4               1
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4           2
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6               3
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6           4
#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX            5
#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX        6

#define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC         (0x1 << 14)

#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS          14
#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \
	((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1)
#define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED             (0x1 << 14)
#define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED         (0x1 << 15)

#define CQ_ENET_RQ_DESC_FCOE_SOF_BITS               4
#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \
	((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1)
#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS               8
#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \
	((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1)
#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT              8

#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK       (0x1 << 0)
#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK              (0x1 << 0)
#define CQ_ENET_RQ_DESC_FLAGS_UDP                   (0x1 << 1)
#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR              (0x1 << 1)
#define CQ_ENET_RQ_DESC_FLAGS_TCP                   (0x1 << 2)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK          (0x1 << 3)
#define CQ_ENET_RQ_DESC_FLAGS_IPV6                  (0x1 << 4)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4                  (0x1 << 5)
#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT         (0x1 << 6)
#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK                (0x1 << 7)

static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc,
	u8 *type, u8 *color, u16 *q_number, u16 *completed_index,
	u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type,
	u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error,
	u8 *vlan_stripped, u16 *vlan, u16 *checksum, u8 *fcoe_sof,
	u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof,
	u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok,
	u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok)
{
	u16 completed_index_flags = le16_to_cpu(desc->completed_index_flags);
	u16 q_number_rss_type_flags =
		le16_to_cpu(desc->q_number_rss_type_flags);
	u16 bytes_written_flags = le16_to_cpu(desc->bytes_written_flags);

	cq_desc_dec((struct cq_desc *)desc, type,
		color, q_number, completed_index);

	*ingress_port = (completed_index_flags &
		CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0;
	*fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ?
		1 : 0;
	*eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ?
		1 : 0;
	*sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ?
		1 : 0;

	*rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) &
		CQ_ENET_RQ_DESC_RSS_TYPE_MASK);
	*csum_not_calc = (q_number_rss_type_flags &
		CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0;

	*rss_hash = le32_to_cpu(desc->rss_hash);

	*bytes_written = bytes_written_flags &
		CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK;
	*packet_error = (bytes_written_flags &
		CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0;
	*vlan_stripped = (bytes_written_flags &
		CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0;

	*vlan = le16_to_cpu(desc->vlan);

	if (*fcoe) {
		*fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) &
			CQ_ENET_RQ_DESC_FCOE_SOF_MASK);
		*fcoe_fc_crc_ok = (desc->flags &
			CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0;
		*fcoe_enc_error = (desc->flags &
			CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0;
		*fcoe_eof = (u8)((desc->checksum_fcoe >>
			CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) &
			CQ_ENET_RQ_DESC_FCOE_EOF_MASK);
		*checksum = 0;
	} else {
		*fcoe_sof = 0;
		*fcoe_fc_crc_ok = 0;
		*fcoe_enc_error = 0;
		*fcoe_eof = 0;
		*checksum = le16_to_cpu(desc->checksum_fcoe);
	}

	*tcp_udp_csum_ok =
		(desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0;
	*udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0;
	*tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0;
	*ipv4_csum_ok =
		(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0;
	*ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0;
	*ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0;
	*ipv4_fragment =
		(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0;
	*fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0;
}

#endif /* _CQ_ENET_DESC_H_ */
Commit	Line	Data
01f2e4ea SF	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 _CQ_ENET_DESC_H_
	21	#define _CQ_ENET_DESC_H_
	22
	23	#include "cq_desc.h"
	24
	25	/* Ethernet completion queue descriptor: 16B */
	26	struct cq_enet_wq_desc {
	27	__le16 completed_index;
	28	__le16 q_number;
	29	u8 reserved[11];
	30	u8 type_color;
	31	};
	32
	33	static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc,
	34	u8 type, u8 color, u16 q_number, u16 completed_index)
	35	{
	36	cq_desc_dec((struct cq_desc *)desc, type,
	37	color, q_number, completed_index);
	38	}
	39
	40	/* Completion queue descriptor: Ethernet receive queue, 16B */
	41	struct cq_enet_rq_desc {
	42	__le16 completed_index_flags;
	43	__le16 q_number_rss_type_flags;
	44	__le32 rss_hash;
	45	__le16 bytes_written_flags;
	46	__le16 vlan;
	47	__le16 checksum_fcoe;
	48	u8 flags;
	49	u8 type_color;
	50	};
	51
	52	#define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT (0x1 << 12)
	53	#define CQ_ENET_RQ_DESC_FLAGS_FCOE (0x1 << 13)
	54	#define CQ_ENET_RQ_DESC_FLAGS_EOP (0x1 << 14)
	55	#define CQ_ENET_RQ_DESC_FLAGS_SOP (0x1 << 15)
	56
	57	#define CQ_ENET_RQ_DESC_RSS_TYPE_BITS 4
	58	#define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \
	59	((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1)
	60	#define CQ_ENET_RQ_DESC_RSS_TYPE_NONE 0
	61	#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4 1
	62	#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4 2
	63	#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6 3
	64	#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6 4
65	#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX 5
66	#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX 6
67
68	#define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC (0x1 << 14)
69
70	#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS 14
71	#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \
72	((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1)
73	#define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED (0x1 << 14)
74	#define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED (0x1 << 15)
75
76	#define CQ_ENET_RQ_DESC_FCOE_SOF_BITS 4
77	#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \
78	((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1)
79	#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS 8
80	#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \
81	((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1)
82	#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT 8
83
84	#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK (0x1 << 0)
85	#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK (0x1 << 0)
86	#define CQ_ENET_RQ_DESC_FLAGS_UDP (0x1 << 1)
87	#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR (0x1 << 1)
88	#define CQ_ENET_RQ_DESC_FLAGS_TCP (0x1 << 2)
89	#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK (0x1 << 3)
90	#define CQ_ENET_RQ_DESC_FLAGS_IPV6 (0x1 << 4)
91	#define CQ_ENET_RQ_DESC_FLAGS_IPV4 (0x1 << 5)
92	#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT (0x1 << 6)
93	#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK (0x1 << 7)
94
95	static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc,
96	u8 type, u8 color, u16 q_number, u16 completed_index,
97	u8 ingress_port, u8 fcoe, u8 eop, u8 sop, u8 *rss_type,
98	u8 csum_not_calc, u32 rss_hash, u16 bytes_written, u8 packet_error,
99	u8 vlan_stripped, u16 vlan, u16 checksum, u8 fcoe_sof,
100	u8 fcoe_fc_crc_ok, u8 fcoe_enc_error, u8 *fcoe_eof,
101	u8 tcp_udp_csum_ok, u8 udp, u8 tcp, u8 ipv4_csum_ok,
102	u8 ipv6, u8 ipv4, u8 ipv4_fragment, u8 fcs_ok)
103	{
104	u16 completed_index_flags = le16_to_cpu(desc->completed_index_flags);
105	u16 q_number_rss_type_flags =
106	le16_to_cpu(desc->q_number_rss_type_flags);
107	u16 bytes_written_flags = le16_to_cpu(desc->bytes_written_flags);
108
109	cq_desc_dec((struct cq_desc *)desc, type,
110	color, q_number, completed_index);
111
112	*ingress_port = (completed_index_flags &
113	CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0;
114	*fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ?
115	1 : 0;
116	*eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ?
117	1 : 0;
118	*sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ?
119	1 : 0;
120
121	*rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) &
122	CQ_ENET_RQ_DESC_RSS_TYPE_MASK);
123	*csum_not_calc = (q_number_rss_type_flags &
124	CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0;
125
126	*rss_hash = le32_to_cpu(desc->rss_hash);
127
128	*bytes_written = bytes_written_flags &
129	CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK;
130	*packet_error = (bytes_written_flags &
131	CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0;
132	*vlan_stripped = (bytes_written_flags &
133	CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0;
134
135	*vlan = le16_to_cpu(desc->vlan);
136
137	if (*fcoe) {
138	*fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) &
139	CQ_ENET_RQ_DESC_FCOE_SOF_MASK);
140	*fcoe_fc_crc_ok = (desc->flags &
141	CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0;
142	*fcoe_enc_error = (desc->flags &
143	CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0;
144	*fcoe_eof = (u8)((desc->checksum_fcoe >>
145	CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) &
146	CQ_ENET_RQ_DESC_FCOE_EOF_MASK);
147	*checksum = 0;
148	} else {
149	*fcoe_sof = 0;
150	*fcoe_fc_crc_ok = 0;
151	*fcoe_enc_error = 0;
152	*fcoe_eof = 0;
153	*checksum = le16_to_cpu(desc->checksum_fcoe);
154	}
155
156	*tcp_udp_csum_ok =
157	(desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0;
158	*udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0;
159	*tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0;
160	*ipv4_csum_ok =
161	(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0;
162	*ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0;
163	*ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0;
164	*ipv4_fragment =
165	(desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0;
166	*fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0;
167	}
168
169	#endif /* _CQ_ENET_DESC_H_ */