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;
99 unsigned int hash_base;
101 union aopen_entry *atid_tab;
103 unsigned int atid_base;
105 struct filter_entry *ftid_tab;
107 unsigned int ftid_base;
108 unsigned int aftid_base;
109 unsigned int aftid_end;
110 /* Server filter region */
111 unsigned int sftid_base;
112 unsigned int nsftids;
114 spinlock_t atid_lock ____cacheline_aligned_in_smp;
115 union aopen_entry *afree;
116 unsigned int atids_in_use;
118 spinlock_t stid_lock;
119 unsigned int stids_in_use;
120 unsigned int sftids_in_use;
122 /* TIDs in the TCAM */
123 atomic_t tids_in_use;
124 /* TIDs in the HASH */
125 atomic_t hash_tids_in_use;
128 static inline void *lookup_tid(const struct tid_info *t, unsigned int tid)
130 return tid < t->ntids ? t->tid_tab[tid] : NULL;
133 static inline void *lookup_atid(const struct tid_info *t, unsigned int atid)
135 return atid < t->natids ? t->atid_tab[atid].data : NULL;
138 static inline void *lookup_stid(const struct tid_info *t, unsigned int stid)
140 /* Is it a server filter TID? */
141 if (t->nsftids && (stid >= t->sftid_base)) {
142 stid -= t->sftid_base;
145 stid -= t->stid_base;
148 return stid < (t->nstids + t->nsftids) ? t->stid_tab[stid].data : NULL;
151 static inline void cxgb4_insert_tid(struct tid_info *t, void *data,
154 t->tid_tab[tid] = data;
155 if (t->hash_base && (tid >= t->hash_base))
156 atomic_inc(&t->hash_tids_in_use);
158 atomic_inc(&t->tids_in_use);
161 int cxgb4_alloc_atid(struct tid_info *t, void *data);
162 int cxgb4_alloc_stid(struct tid_info *t, int family, void *data);
163 int cxgb4_alloc_sftid(struct tid_info *t, int family, void *data);
164 void cxgb4_free_atid(struct tid_info *t, unsigned int atid);
165 void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family);
166 void cxgb4_remove_tid(struct tid_info *t, unsigned int qid, unsigned int tid);
170 int cxgb4_create_server(const struct net_device *dev, unsigned int stid,
171 __be32 sip, __be16 sport, __be16 vlan,
173 int cxgb4_create_server6(const struct net_device *dev, unsigned int stid,
174 const struct in6_addr *sip, __be16 sport,
176 int cxgb4_remove_server(const struct net_device *dev, unsigned int stid,
177 unsigned int queue, bool ipv6);
178 int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid,
179 __be32 sip, __be16 sport, __be16 vlan,
181 unsigned char port, unsigned char mask);
182 int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid,
183 unsigned int queue, bool ipv6);
185 static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue)
187 skb_set_queue_mapping(skb, (queue << 1) | prio);
198 CXGB4_STATE_START_RECOVERY,
204 CXGB4_CONTROL_DB_FULL,
205 CXGB4_CONTROL_DB_EMPTY,
206 CXGB4_CONTROL_DB_DROP,
220 struct cxgb4_virt_res { /* virtualized HW resources */
221 struct cxgb4_range ddp;
222 struct cxgb4_range iscsi;
223 struct cxgb4_range stag;
224 struct cxgb4_range rq;
225 struct cxgb4_range pbl;
226 struct cxgb4_range qp;
227 struct cxgb4_range cq;
228 struct cxgb4_range ocq;
231 #define OCQ_WIN_OFFSET(pdev, vres) \
232 (pci_resource_len((pdev), 2) - roundup_pow_of_two((vres)->ocq.size))
235 * Block of information the LLD provides to ULDs attaching to a device.
237 struct cxgb4_lld_info {
238 struct pci_dev *pdev; /* associated PCI device */
239 struct l2t_data *l2t; /* L2 table */
240 struct tid_info *tids; /* TID table */
241 struct net_device **ports; /* device ports */
242 const struct cxgb4_virt_res *vr; /* assorted HW resources */
243 const unsigned short *mtus; /* MTU table */
244 const unsigned short *rxq_ids; /* the ULD's Rx queue ids */
245 const unsigned short *ciq_ids; /* the ULD's concentrator IQ ids */
246 unsigned short nrxq; /* # of Rx queues */
247 unsigned short ntxq; /* # of Tx queues */
248 unsigned short nciq; /* # of concentrator IQ */
249 unsigned char nchan:4; /* # of channels */
250 unsigned char nports:4; /* # of ports */
251 unsigned char wr_cred; /* WR 16-byte credits */
252 unsigned char adapter_type; /* type of adapter */
253 unsigned char fw_api_ver; /* FW API version */
254 unsigned int fw_vers; /* FW version */
255 unsigned int iscsi_iolen; /* iSCSI max I/O length */
256 unsigned int cclk_ps; /* Core clock period in psec */
257 unsigned short udb_density; /* # of user DB/page */
258 unsigned short ucq_density; /* # of user CQs/page */
259 unsigned short filt_mode; /* filter optional components */
260 unsigned short tx_modq[NCHAN]; /* maps each tx channel to a */
261 /* scheduler queue */
262 void __iomem *gts_reg; /* address of GTS register */
263 void __iomem *db_reg; /* address of kernel doorbell */
264 int dbfifo_int_thresh; /* doorbell fifo int threshold */
265 unsigned int sge_ingpadboundary; /* SGE ingress padding boundary */
266 unsigned int sge_egrstatuspagesize; /* SGE egress status page size */
267 unsigned int sge_pktshift; /* Padding between CPL and */
269 unsigned int pf; /* Physical Function we're using */
270 bool enable_fw_ofld_conn; /* Enable connection through fw */
272 unsigned int max_ordird_qp; /* Max ORD/IRD depth per RDMA QP */
273 unsigned int max_ird_adapter; /* Max IRD memory per adapter */
274 bool ulptx_memwrite_dsgl; /* use of T5 DSGL allowed */
275 int nodeid; /* device numa node id */
278 struct cxgb4_uld_info {
280 void *(*add)(const struct cxgb4_lld_info *p);
281 int (*rx_handler)(void *handle, const __be64 *rsp,
282 const struct pkt_gl *gl);
283 int (*state_change)(void *handle, enum cxgb4_state new_state);
284 int (*control)(void *handle, enum cxgb4_control control, ...);
287 int cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p);
288 int cxgb4_unregister_uld(enum cxgb4_uld type);
289 int cxgb4_ofld_send(struct net_device *dev, struct sk_buff *skb);
290 unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo);
291 unsigned int cxgb4_port_chan(const struct net_device *dev);
292 unsigned int cxgb4_port_viid(const struct net_device *dev);
293 unsigned int cxgb4_port_idx(const struct net_device *dev);
294 unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu,
296 unsigned int cxgb4_best_aligned_mtu(const unsigned short *mtus,
297 unsigned short header_size,
298 unsigned short data_size_max,
299 unsigned short data_size_align,
300 unsigned int *mtu_idxp);
301 void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4,
302 struct tp_tcp_stats *v6);
303 void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask,
304 const unsigned int *pgsz_order);
305 struct sk_buff *cxgb4_pktgl_to_skb(const struct pkt_gl *gl,
306 unsigned int skb_len, unsigned int pull_len);
307 int cxgb4_sync_txq_pidx(struct net_device *dev, u16 qid, u16 pidx, u16 size);
308 int cxgb4_flush_eq_cache(struct net_device *dev);
309 int cxgb4_read_tpte(struct net_device *dev, u32 stag, __be32 *tpte);
310 u64 cxgb4_read_sge_timestamp(struct net_device *dev);
312 enum cxgb4_bar2_qtype { CXGB4_BAR2_QTYPE_EGRESS, CXGB4_BAR2_QTYPE_INGRESS };
313 int cxgb4_bar2_sge_qregs(struct net_device *dev,
315 enum cxgb4_bar2_qtype qtype,
318 unsigned int *pbar2_qid);
320 #endif /* !__CXGB4_OFLD_H */