2 * This file is part of the Chelsio T4 Ethernet driver for Linux.
4 * Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 #ifndef __CXGB4_OFLD_H
36 #define __CXGB4_OFLD_H
38 #include <linux/cache.h>
39 #include <linux/spinlock.h>
40 #include <linux/skbuff.h>
41 #include <linux/inetdevice.h>
42 #include <linux/atomic.h>
44 /* CPL message priority levels */
46 CPL_PRIORITY_DATA
= 0, /* data messages */
47 CPL_PRIORITY_SETUP
= 1, /* connection setup messages */
48 CPL_PRIORITY_TEARDOWN
= 0, /* connection teardown messages */
49 CPL_PRIORITY_LISTEN
= 1, /* listen start/stop messages */
50 CPL_PRIORITY_ACK
= 1, /* RX ACK messages */
51 CPL_PRIORITY_CONTROL
= 1 /* control messages */
54 #define INIT_TP_WR(w, tid) do { \
55 (w)->wr.wr_hi = htonl(FW_WR_OP_V(FW_TP_WR) | \
56 FW_WR_IMMDLEN_V(sizeof(*w) - sizeof(w->wr))); \
57 (w)->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*w), 16)) | \
58 FW_WR_FLOWID_V(tid)); \
59 (w)->wr.wr_lo = cpu_to_be64(0); \
62 #define INIT_TP_WR_CPL(w, cpl, tid) do { \
64 OPCODE_TID(w) = htonl(MK_OPCODE_TID(cpl, tid)); \
67 #define INIT_ULPTX_WR(w, wrlen, atomic, tid) do { \
68 (w)->wr.wr_hi = htonl(FW_WR_OP_V(FW_ULPTX_WR) | \
69 FW_WR_ATOMIC_V(atomic)); \
70 (w)->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(wrlen, 16)) | \
71 FW_WR_FLOWID_V(tid)); \
72 (w)->wr.wr_lo = cpu_to_be64(0); \
75 /* Special asynchronous notification message */
76 #define CXGB4_MSG_AN ((void *)1)
84 union aopen_entry
*next
;
88 * Holds the size, base address, free list start, etc of the TID, server TID,
89 * and active-open TID tables. The tables themselves are allocated dynamically.
95 struct serv_entry
*stid_tab
;
96 unsigned long *stid_bmap
;
98 unsigned int stid_base
;
100 union aopen_entry
*atid_tab
;
102 unsigned int atid_base
;
104 struct filter_entry
*ftid_tab
;
106 unsigned int ftid_base
;
107 unsigned int aftid_base
;
108 unsigned int aftid_end
;
109 /* Server filter region */
110 unsigned int sftid_base
;
111 unsigned int nsftids
;
113 spinlock_t atid_lock ____cacheline_aligned_in_smp
;
114 union aopen_entry
*afree
;
115 unsigned int atids_in_use
;
117 spinlock_t stid_lock
;
118 unsigned int stids_in_use
;
120 atomic_t tids_in_use
;
123 static inline void *lookup_tid(const struct tid_info
*t
, unsigned int tid
)
125 return tid
< t
->ntids
? t
->tid_tab
[tid
] : NULL
;
128 static inline void *lookup_atid(const struct tid_info
*t
, unsigned int atid
)
130 return atid
< t
->natids
? t
->atid_tab
[atid
].data
: NULL
;
133 static inline void *lookup_stid(const struct tid_info
*t
, unsigned int stid
)
135 /* Is it a server filter TID? */
136 if (t
->nsftids
&& (stid
>= t
->sftid_base
)) {
137 stid
-= t
->sftid_base
;
140 stid
-= t
->stid_base
;
143 return stid
< (t
->nstids
+ t
->nsftids
) ? t
->stid_tab
[stid
].data
: NULL
;
146 static inline void cxgb4_insert_tid(struct tid_info
*t
, void *data
,
149 t
->tid_tab
[tid
] = data
;
150 atomic_inc(&t
->tids_in_use
);
153 int cxgb4_alloc_atid(struct tid_info
*t
, void *data
);
154 int cxgb4_alloc_stid(struct tid_info
*t
, int family
, void *data
);
155 int cxgb4_alloc_sftid(struct tid_info
*t
, int family
, void *data
);
156 void cxgb4_free_atid(struct tid_info
*t
, unsigned int atid
);
157 void cxgb4_free_stid(struct tid_info
*t
, unsigned int stid
, int family
);
158 void cxgb4_remove_tid(struct tid_info
*t
, unsigned int qid
, unsigned int tid
);
162 int cxgb4_create_server(const struct net_device
*dev
, unsigned int stid
,
163 __be32 sip
, __be16 sport
, __be16 vlan
,
165 int cxgb4_create_server6(const struct net_device
*dev
, unsigned int stid
,
166 const struct in6_addr
*sip
, __be16 sport
,
168 int cxgb4_remove_server(const struct net_device
*dev
, unsigned int stid
,
169 unsigned int queue
, bool ipv6
);
170 int cxgb4_create_server_filter(const struct net_device
*dev
, unsigned int stid
,
171 __be32 sip
, __be16 sport
, __be16 vlan
,
173 unsigned char port
, unsigned char mask
);
174 int cxgb4_remove_server_filter(const struct net_device
*dev
, unsigned int stid
,
175 unsigned int queue
, bool ipv6
);
177 static inline void set_wr_txq(struct sk_buff
*skb
, int prio
, int queue
)
179 skb_set_queue_mapping(skb
, (queue
<< 1) | prio
);
190 CXGB4_STATE_START_RECOVERY
,
196 CXGB4_CONTROL_DB_FULL
,
197 CXGB4_CONTROL_DB_EMPTY
,
198 CXGB4_CONTROL_DB_DROP
,
212 struct cxgb4_virt_res
{ /* virtualized HW resources */
213 struct cxgb4_range ddp
;
214 struct cxgb4_range iscsi
;
215 struct cxgb4_range stag
;
216 struct cxgb4_range rq
;
217 struct cxgb4_range pbl
;
218 struct cxgb4_range qp
;
219 struct cxgb4_range cq
;
220 struct cxgb4_range ocq
;
223 #define OCQ_WIN_OFFSET(pdev, vres) \
224 (pci_resource_len((pdev), 2) - roundup_pow_of_two((vres)->ocq.size))
227 * Block of information the LLD provides to ULDs attaching to a device.
229 struct cxgb4_lld_info
{
230 struct pci_dev
*pdev
; /* associated PCI device */
231 struct l2t_data
*l2t
; /* L2 table */
232 struct tid_info
*tids
; /* TID table */
233 struct net_device
**ports
; /* device ports */
234 const struct cxgb4_virt_res
*vr
; /* assorted HW resources */
235 const unsigned short *mtus
; /* MTU table */
236 const unsigned short *rxq_ids
; /* the ULD's Rx queue ids */
237 const unsigned short *ciq_ids
; /* the ULD's concentrator IQ ids */
238 unsigned short nrxq
; /* # of Rx queues */
239 unsigned short ntxq
; /* # of Tx queues */
240 unsigned short nciq
; /* # of concentrator IQ */
241 unsigned char nchan
:4; /* # of channels */
242 unsigned char nports
:4; /* # of ports */
243 unsigned char wr_cred
; /* WR 16-byte credits */
244 unsigned char adapter_type
; /* type of adapter */
245 unsigned char fw_api_ver
; /* FW API version */
246 unsigned int fw_vers
; /* FW version */
247 unsigned int iscsi_iolen
; /* iSCSI max I/O length */
248 unsigned int cclk_ps
; /* Core clock period in psec */
249 unsigned short udb_density
; /* # of user DB/page */
250 unsigned short ucq_density
; /* # of user CQs/page */
251 unsigned short filt_mode
; /* filter optional components */
252 unsigned short tx_modq
[NCHAN
]; /* maps each tx channel to a */
253 /* scheduler queue */
254 void __iomem
*gts_reg
; /* address of GTS register */
255 void __iomem
*db_reg
; /* address of kernel doorbell */
256 int dbfifo_int_thresh
; /* doorbell fifo int threshold */
257 unsigned int sge_ingpadboundary
; /* SGE ingress padding boundary */
258 unsigned int sge_egrstatuspagesize
; /* SGE egress status page size */
259 unsigned int sge_pktshift
; /* Padding between CPL and */
261 unsigned int pf
; /* Physical Function we're using */
262 bool enable_fw_ofld_conn
; /* Enable connection through fw */
264 unsigned int max_ordird_qp
; /* Max ORD/IRD depth per RDMA QP */
265 unsigned int max_ird_adapter
; /* Max IRD memory per adapter */
266 bool ulptx_memwrite_dsgl
; /* use of T5 DSGL allowed */
267 int nodeid
; /* device numa node id */
270 struct cxgb4_uld_info
{
272 void *(*add
)(const struct cxgb4_lld_info
*p
);
273 int (*rx_handler
)(void *handle
, const __be64
*rsp
,
274 const struct pkt_gl
*gl
);
275 int (*state_change
)(void *handle
, enum cxgb4_state new_state
);
276 int (*control
)(void *handle
, enum cxgb4_control control
, ...);
279 int cxgb4_register_uld(enum cxgb4_uld type
, const struct cxgb4_uld_info
*p
);
280 int cxgb4_unregister_uld(enum cxgb4_uld type
);
281 int cxgb4_ofld_send(struct net_device
*dev
, struct sk_buff
*skb
);
282 unsigned int cxgb4_dbfifo_count(const struct net_device
*dev
, int lpfifo
);
283 unsigned int cxgb4_port_chan(const struct net_device
*dev
);
284 unsigned int cxgb4_port_viid(const struct net_device
*dev
);
285 unsigned int cxgb4_port_idx(const struct net_device
*dev
);
286 unsigned int cxgb4_best_mtu(const unsigned short *mtus
, unsigned short mtu
,
288 unsigned int cxgb4_best_aligned_mtu(const unsigned short *mtus
,
289 unsigned short header_size
,
290 unsigned short data_size_max
,
291 unsigned short data_size_align
,
292 unsigned int *mtu_idxp
);
293 void cxgb4_get_tcp_stats(struct pci_dev
*pdev
, struct tp_tcp_stats
*v4
,
294 struct tp_tcp_stats
*v6
);
295 void cxgb4_iscsi_init(struct net_device
*dev
, unsigned int tag_mask
,
296 const unsigned int *pgsz_order
);
297 struct sk_buff
*cxgb4_pktgl_to_skb(const struct pkt_gl
*gl
,
298 unsigned int skb_len
, unsigned int pull_len
);
299 int cxgb4_sync_txq_pidx(struct net_device
*dev
, u16 qid
, u16 pidx
, u16 size
);
300 int cxgb4_flush_eq_cache(struct net_device
*dev
);
301 int cxgb4_read_tpte(struct net_device
*dev
, u32 stag
, __be32
*tpte
);
302 u64
cxgb4_read_sge_timestamp(struct net_device
*dev
);
304 enum cxgb4_bar2_qtype
{ CXGB4_BAR2_QTYPE_EGRESS
, CXGB4_BAR2_QTYPE_INGRESS
};
305 int cxgb4_bar2_sge_qregs(struct net_device
*dev
,
307 enum cxgb4_bar2_qtype qtype
,
310 unsigned int *pbar2_qid
);
312 #endif /* !__CXGB4_OFLD_H */