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Dimitris Michailidis625ba2c2010-04-01 15:28:25 +00001/*
2 * This file is part of the Chelsio T4 Ethernet driver for Linux.
3 *
Anish Bhattce100b8b2014-06-19 21:37:15 -07004 * Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved.
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +00005 *
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:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
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.
24 *
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
32 * SOFTWARE.
33 */
34
35#ifndef __CXGB4_OFLD_H
36#define __CXGB4_OFLD_H
37
38#include <linux/cache.h>
39#include <linux/spinlock.h>
40#include <linux/skbuff.h>
Vipul Pandya793dad92012-12-10 09:30:56 +000041#include <linux/inetdevice.h>
Arun Sharma600634972011-07-26 16:09:06 -070042#include <linux/atomic.h>
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +000043
44/* CPL message priority levels */
45enum {
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 */
52};
53
54#define INIT_TP_WR(w, tid) do { \
Hariprasad Shenaie2ac9622014-11-07 09:35:25 +053055 (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)); \
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +000059 (w)->wr.wr_lo = cpu_to_be64(0); \
60} while (0)
61
62#define INIT_TP_WR_CPL(w, cpl, tid) do { \
63 INIT_TP_WR(w, tid); \
64 OPCODE_TID(w) = htonl(MK_OPCODE_TID(cpl, tid)); \
65} while (0)
66
67#define INIT_ULPTX_WR(w, wrlen, atomic, tid) do { \
Hariprasad Shenaie2ac9622014-11-07 09:35:25 +053068 (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)); \
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +000072 (w)->wr.wr_lo = cpu_to_be64(0); \
73} while (0)
74
75/* Special asynchronous notification message */
76#define CXGB4_MSG_AN ((void *)1)
77
78struct serv_entry {
79 void *data;
80};
81
82union aopen_entry {
83 void *data;
84 union aopen_entry *next;
85};
86
87/*
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.
90 */
91struct tid_info {
92 void **tid_tab;
93 unsigned int ntids;
94
95 struct serv_entry *stid_tab;
96 unsigned long *stid_bmap;
97 unsigned int nstids;
98 unsigned int stid_base;
99
100 union aopen_entry *atid_tab;
101 unsigned int natids;
Vipul Pandyaf2b7e782012-12-10 09:30:52 +0000102 unsigned int atid_base;
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000103
Vipul Pandyaf2b7e782012-12-10 09:30:52 +0000104 struct filter_entry *ftid_tab;
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000105 unsigned int nftids;
106 unsigned int ftid_base;
Vipul Pandya636f9d32012-09-26 02:39:39 +0000107 unsigned int aftid_base;
108 unsigned int aftid_end;
Vipul Pandya9a4da2c2012-10-19 02:09:53 +0000109 /* Server filter region */
110 unsigned int sftid_base;
111 unsigned int nsftids;
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000112
113 spinlock_t atid_lock ____cacheline_aligned_in_smp;
114 union aopen_entry *afree;
115 unsigned int atids_in_use;
116
117 spinlock_t stid_lock;
118 unsigned int stids_in_use;
119
120 atomic_t tids_in_use;
121};
122
123static inline void *lookup_tid(const struct tid_info *t, unsigned int tid)
124{
125 return tid < t->ntids ? t->tid_tab[tid] : NULL;
126}
127
128static inline void *lookup_atid(const struct tid_info *t, unsigned int atid)
129{
130 return atid < t->natids ? t->atid_tab[atid].data : NULL;
131}
132
133static inline void *lookup_stid(const struct tid_info *t, unsigned int stid)
134{
Kumar Sanghvi470c60c2013-12-18 16:38:21 +0530135 /* Is it a server filter TID? */
136 if (t->nsftids && (stid >= t->sftid_base)) {
137 stid -= t->sftid_base;
138 stid += t->nstids;
139 } else {
140 stid -= t->stid_base;
141 }
142
Vipul Pandyadca4fae2012-12-10 09:30:53 +0000143 return stid < (t->nstids + t->nsftids) ? t->stid_tab[stid].data : NULL;
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000144}
145
146static inline void cxgb4_insert_tid(struct tid_info *t, void *data,
147 unsigned int tid)
148{
149 t->tid_tab[tid] = data;
150 atomic_inc(&t->tids_in_use);
151}
152
153int cxgb4_alloc_atid(struct tid_info *t, void *data);
154int cxgb4_alloc_stid(struct tid_info *t, int family, void *data);
Vipul Pandyadca4fae2012-12-10 09:30:53 +0000155int cxgb4_alloc_sftid(struct tid_info *t, int family, void *data);
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000156void cxgb4_free_atid(struct tid_info *t, unsigned int atid);
157void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family);
158void cxgb4_remove_tid(struct tid_info *t, unsigned int qid, unsigned int tid);
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000159
160struct in6_addr;
161
162int cxgb4_create_server(const struct net_device *dev, unsigned int stid,
Vipul Pandya793dad92012-12-10 09:30:56 +0000163 __be32 sip, __be16 sport, __be16 vlan,
164 unsigned int queue);
Vipul Pandya80f40c12013-07-04 16:10:45 +0530165int cxgb4_create_server6(const struct net_device *dev, unsigned int stid,
166 const struct in6_addr *sip, __be16 sport,
167 unsigned int queue);
168int cxgb4_remove_server(const struct net_device *dev, unsigned int stid,
169 unsigned int queue, bool ipv6);
Vipul Pandyadca4fae2012-12-10 09:30:53 +0000170int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid,
Vipul Pandya793dad92012-12-10 09:30:56 +0000171 __be32 sip, __be16 sport, __be16 vlan,
172 unsigned int queue,
173 unsigned char port, unsigned char mask);
Vipul Pandyadca4fae2012-12-10 09:30:53 +0000174int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid,
175 unsigned int queue, bool ipv6);
Anish Bhatta3e3b282014-07-17 00:18:16 -0700176int cxgb4_clip_get(const struct net_device *dev, const struct in6_addr *lip);
177int cxgb4_clip_release(const struct net_device *dev,
178 const struct in6_addr *lip);
179
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000180static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue)
181{
182 skb_set_queue_mapping(skb, (queue << 1) | prio);
183}
184
185enum cxgb4_uld {
186 CXGB4_ULD_RDMA,
187 CXGB4_ULD_ISCSI,
188 CXGB4_ULD_MAX
189};
190
191enum cxgb4_state {
192 CXGB4_STATE_UP,
193 CXGB4_STATE_START_RECOVERY,
194 CXGB4_STATE_DOWN,
195 CXGB4_STATE_DETACH
196};
197
Vipul Pandya881806b2012-05-18 15:29:24 +0530198enum cxgb4_control {
199 CXGB4_CONTROL_DB_FULL,
200 CXGB4_CONTROL_DB_EMPTY,
201 CXGB4_CONTROL_DB_DROP,
202};
203
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000204struct pci_dev;
205struct l2t_data;
206struct net_device;
207struct pkt_gl;
208struct tp_tcp_stats;
209
210struct cxgb4_range {
211 unsigned int start;
212 unsigned int size;
213};
214
215struct cxgb4_virt_res { /* virtualized HW resources */
216 struct cxgb4_range ddp;
217 struct cxgb4_range iscsi;
218 struct cxgb4_range stag;
219 struct cxgb4_range rq;
220 struct cxgb4_range pbl;
Dimitris Michailidisa0881ca2010-06-18 10:05:34 +0000221 struct cxgb4_range qp;
222 struct cxgb4_range cq;
Dimitris Michailidis1ae970e2010-08-02 13:19:19 +0000223 struct cxgb4_range ocq;
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000224};
225
Dimitris Michailidis1ae970e2010-08-02 13:19:19 +0000226#define OCQ_WIN_OFFSET(pdev, vres) \
227 (pci_resource_len((pdev), 2) - roundup_pow_of_two((vres)->ocq.size))
228
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000229/*
230 * Block of information the LLD provides to ULDs attaching to a device.
231 */
232struct cxgb4_lld_info {
233 struct pci_dev *pdev; /* associated PCI device */
234 struct l2t_data *l2t; /* L2 table */
235 struct tid_info *tids; /* TID table */
236 struct net_device **ports; /* device ports */
237 const struct cxgb4_virt_res *vr; /* assorted HW resources */
238 const unsigned short *mtus; /* MTU table */
239 const unsigned short *rxq_ids; /* the ULD's Rx queue ids */
Hariprasad Shenaicf38be62014-06-06 21:40:42 +0530240 const unsigned short *ciq_ids; /* the ULD's concentrator IQ ids */
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000241 unsigned short nrxq; /* # of Rx queues */
242 unsigned short ntxq; /* # of Tx queues */
Hariprasad Shenaicf38be62014-06-06 21:40:42 +0530243 unsigned short nciq; /* # of concentrator IQ */
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000244 unsigned char nchan:4; /* # of channels */
245 unsigned char nports:4; /* # of ports */
246 unsigned char wr_cred; /* WR 16-byte credits */
247 unsigned char adapter_type; /* type of adapter */
248 unsigned char fw_api_ver; /* FW API version */
249 unsigned int fw_vers; /* FW version */
250 unsigned int iscsi_iolen; /* iSCSI max I/O length */
Hariprasad Shenai7730b4c2014-07-14 21:34:54 +0530251 unsigned int cclk_ps; /* Core clock period in psec */
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000252 unsigned short udb_density; /* # of user DB/page */
253 unsigned short ucq_density; /* # of user CQs/page */
Vipul Pandyadca4fae2012-12-10 09:30:53 +0000254 unsigned short filt_mode; /* filter optional components */
255 unsigned short tx_modq[NCHAN]; /* maps each tx channel to a */
256 /* scheduler queue */
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000257 void __iomem *gts_reg; /* address of GTS register */
258 void __iomem *db_reg; /* address of kernel doorbell */
Vipul Pandya3069ee92012-05-18 15:29:26 +0530259 int dbfifo_int_thresh; /* doorbell fifo int threshold */
Hariprasad Shenai04e10e22014-07-14 21:34:51 +0530260 unsigned int sge_ingpadboundary; /* SGE ingress padding boundary */
261 unsigned int sge_egrstatuspagesize; /* SGE egress status page size */
Vipul Pandyadca4fae2012-12-10 09:30:53 +0000262 unsigned int sge_pktshift; /* Padding between CPL and */
263 /* packet data */
Hariprasad Shenai35b1de52014-06-27 19:23:47 +0530264 unsigned int pf; /* Physical Function we're using */
Vipul Pandyadca4fae2012-12-10 09:30:53 +0000265 bool enable_fw_ofld_conn; /* Enable connection through fw */
266 /* WR */
Hariprasad Shenai4c2c5762014-07-14 21:34:52 +0530267 unsigned int max_ordird_qp; /* Max ORD/IRD depth per RDMA QP */
268 unsigned int max_ird_adapter; /* Max IRD memory per adapter */
Kumar Sanghvi1ac0f092014-02-18 17:56:12 +0530269 bool ulptx_memwrite_dsgl; /* use of T5 DSGL allowed */
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000270};
271
272struct cxgb4_uld_info {
273 const char *name;
274 void *(*add)(const struct cxgb4_lld_info *p);
275 int (*rx_handler)(void *handle, const __be64 *rsp,
276 const struct pkt_gl *gl);
277 int (*state_change)(void *handle, enum cxgb4_state new_state);
Vipul Pandya3069ee92012-05-18 15:29:26 +0530278 int (*control)(void *handle, enum cxgb4_control control, ...);
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000279};
280
281int cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p);
282int cxgb4_unregister_uld(enum cxgb4_uld type);
283int cxgb4_ofld_send(struct net_device *dev, struct sk_buff *skb);
Vipul Pandya881806b2012-05-18 15:29:24 +0530284unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo);
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000285unsigned int cxgb4_port_chan(const struct net_device *dev);
286unsigned int cxgb4_port_viid(const struct net_device *dev);
287unsigned int cxgb4_port_idx(const struct net_device *dev);
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000288unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu,
289 unsigned int *idx);
Hariprasad Shenai92e7ae72014-06-06 21:40:43 +0530290unsigned int cxgb4_best_aligned_mtu(const unsigned short *mtus,
291 unsigned short header_size,
292 unsigned short data_size_max,
293 unsigned short data_size_align,
294 unsigned int *mtu_idxp);
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000295void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4,
296 struct tp_tcp_stats *v6);
297void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask,
298 const unsigned int *pgsz_order);
299struct sk_buff *cxgb4_pktgl_to_skb(const struct pkt_gl *gl,
300 unsigned int skb_len, unsigned int pull_len);
Vipul Pandya3069ee92012-05-18 15:29:26 +0530301int cxgb4_sync_txq_pidx(struct net_device *dev, u16 qid, u16 pidx, u16 size);
302int cxgb4_flush_eq_cache(struct net_device *dev);
Vipul Pandya3cbdb922013-03-14 05:08:59 +0000303void cxgb4_disable_db_coalescing(struct net_device *dev);
304void cxgb4_enable_db_coalescing(struct net_device *dev);
Hariprasad Shenai031cf472014-07-14 21:34:53 +0530305int cxgb4_read_tpte(struct net_device *dev, u32 stag, __be32 *tpte);
Hariprasad Shenai7730b4c2014-07-14 21:34:54 +0530306u64 cxgb4_read_sge_timestamp(struct net_device *dev);
Vipul Pandya3cbdb922013-03-14 05:08:59 +0000307
Hariprasad Shenaidf64e4d2014-12-03 19:32:53 +0530308enum cxgb4_bar2_qtype { CXGB4_BAR2_QTYPE_EGRESS, CXGB4_BAR2_QTYPE_INGRESS };
309int cxgb4_bar2_sge_qregs(struct net_device *dev,
310 unsigned int qid,
311 enum cxgb4_bar2_qtype qtype,
312 u64 *pbar2_qoffset,
313 unsigned int *pbar2_qid);
314
Dimitris Michailidis625ba2c2010-04-01 15:28:25 +0000315#endif /* !__CXGB4_OFLD_H */