2 * This file is part of the Chelsio T4 Ethernet driver for Linux.
4 * Copyright (c) 2003-2016 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
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>
45 #define MAX_ULD_QSETS 16
47 /* CPL message priority levels */
49 CPL_PRIORITY_DATA = 0, /* data messages */
50 CPL_PRIORITY_SETUP = 1, /* connection setup messages */
51 CPL_PRIORITY_TEARDOWN = 0, /* connection teardown messages */
52 CPL_PRIORITY_LISTEN = 1, /* listen start/stop messages */
53 CPL_PRIORITY_ACK = 1, /* RX ACK messages */
54 CPL_PRIORITY_CONTROL = 1 /* control messages */
57 #define INIT_TP_WR(w, tid) do { \
58 (w)->wr.wr_hi = htonl(FW_WR_OP_V(FW_TP_WR) | \
59 FW_WR_IMMDLEN_V(sizeof(*w) - sizeof(w->wr))); \
60 (w)->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*w), 16)) | \
61 FW_WR_FLOWID_V(tid)); \
62 (w)->wr.wr_lo = cpu_to_be64(0); \
65 #define INIT_TP_WR_CPL(w, cpl, tid) do { \
67 OPCODE_TID(w) = htonl(MK_OPCODE_TID(cpl, tid)); \
70 #define INIT_ULPTX_WR(w, wrlen, atomic, tid) do { \
71 (w)->wr.wr_hi = htonl(FW_WR_OP_V(FW_ULPTX_WR) | \
72 FW_WR_ATOMIC_V(atomic)); \
73 (w)->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(wrlen, 16)) | \
74 FW_WR_FLOWID_V(tid)); \
75 (w)->wr.wr_lo = cpu_to_be64(0); \
78 /* Special asynchronous notification message */
79 #define CXGB4_MSG_AN ((void *)1)
80 #define TX_ULD(uld)(((uld) != CXGB4_ULD_CRYPTO) ? CXGB4_TX_OFLD :\
89 union aopen_entry *next;
97 * Holds the size, base address, free list start, etc of the TID, server TID,
98 * and active-open TID tables. The tables themselves are allocated dynamically.
104 struct serv_entry *stid_tab;
105 unsigned long *stid_bmap;
107 unsigned int stid_base;
108 unsigned int hash_base;
110 union aopen_entry *atid_tab;
112 unsigned int atid_base;
114 struct filter_entry *ftid_tab;
115 unsigned long *ftid_bmap;
117 unsigned int ftid_base;
118 unsigned int aftid_base;
119 unsigned int aftid_end;
120 /* Server filter region */
121 unsigned int sftid_base;
122 unsigned int nsftids;
124 spinlock_t atid_lock ____cacheline_aligned_in_smp;
125 union aopen_entry *afree;
126 unsigned int atids_in_use;
128 spinlock_t stid_lock;
129 unsigned int stids_in_use;
130 unsigned int v6_stids_in_use;
131 unsigned int sftids_in_use;
134 struct eotid_entry *eotid_tab;
135 unsigned long *eotid_bmap;
136 unsigned int eotid_base;
137 unsigned int neotids;
139 /* TIDs in the TCAM */
140 atomic_t tids_in_use;
141 /* TIDs in the HASH */
142 atomic_t hash_tids_in_use;
143 atomic_t conns_in_use;
144 /* lock for setting/clearing filter bitmap */
145 spinlock_t ftid_lock;
148 static inline void *lookup_tid(const struct tid_info *t, unsigned int tid)
150 return tid < t->ntids ? t->tid_tab[tid] : NULL;
153 static inline void *lookup_atid(const struct tid_info *t, unsigned int atid)
155 return atid < t->natids ? t->atid_tab[atid].data : NULL;
158 static inline void *lookup_stid(const struct tid_info *t, unsigned int stid)
160 /* Is it a server filter TID? */
161 if (t->nsftids && (stid >= t->sftid_base)) {
162 stid -= t->sftid_base;
165 stid -= t->stid_base;
168 return stid < (t->nstids + t->nsftids) ? t->stid_tab[stid].data : NULL;
171 static inline void cxgb4_insert_tid(struct tid_info *t, void *data,
172 unsigned int tid, unsigned short family)
174 t->tid_tab[tid] = data;
175 if (t->hash_base && (tid >= t->hash_base)) {
176 if (family == AF_INET6)
177 atomic_add(2, &t->hash_tids_in_use);
179 atomic_inc(&t->hash_tids_in_use);
181 if (family == AF_INET6)
182 atomic_add(2, &t->tids_in_use);
184 atomic_inc(&t->tids_in_use);
186 atomic_inc(&t->conns_in_use);
189 int cxgb4_alloc_atid(struct tid_info *t, void *data);
190 int cxgb4_alloc_stid(struct tid_info *t, int family, void *data);
191 int cxgb4_alloc_sftid(struct tid_info *t, int family, void *data);
192 void cxgb4_free_atid(struct tid_info *t, unsigned int atid);
193 void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family);
194 void cxgb4_remove_tid(struct tid_info *t, unsigned int qid, unsigned int tid,
195 unsigned short family);
198 int cxgb4_create_server(const struct net_device *dev, unsigned int stid,
199 __be32 sip, __be16 sport, __be16 vlan,
201 int cxgb4_create_server6(const struct net_device *dev, unsigned int stid,
202 const struct in6_addr *sip, __be16 sport,
204 int cxgb4_remove_server(const struct net_device *dev, unsigned int stid,
205 unsigned int queue, bool ipv6);
206 int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid,
207 __be32 sip, __be16 sport, __be16 vlan,
209 unsigned char port, unsigned char mask);
210 int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid,
211 unsigned int queue, bool ipv6);
213 /* Filter operation context to allow callers of cxgb4_set_filter() and
214 * cxgb4_del_filter() to wait for an asynchronous completion.
217 struct completion completion; /* completion rendezvous */
218 void *closure; /* caller's opaque information */
219 int result; /* result of operation */
220 u32 tid; /* to store tid */
223 struct ch_filter_specification;
225 int cxgb4_get_free_ftid(struct net_device *dev, int family);
226 int __cxgb4_set_filter(struct net_device *dev, int filter_id,
227 struct ch_filter_specification *fs,
228 struct filter_ctx *ctx);
229 int __cxgb4_del_filter(struct net_device *dev, int filter_id,
230 struct ch_filter_specification *fs,
231 struct filter_ctx *ctx);
232 int cxgb4_set_filter(struct net_device *dev, int filter_id,
233 struct ch_filter_specification *fs);
234 int cxgb4_del_filter(struct net_device *dev, int filter_id,
235 struct ch_filter_specification *fs);
236 int cxgb4_get_filter_counters(struct net_device *dev, unsigned int fidx,
237 u64 *hitcnt, u64 *bytecnt, bool hash);
239 static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue)
241 skb_set_queue_mapping(skb, (queue << 1) | prio);
260 enum cxgb4_txq_type {
269 CXGB4_STATE_START_RECOVERY,
272 CXGB4_STATE_FATAL_ERROR
276 CXGB4_CONTROL_DB_FULL,
277 CXGB4_CONTROL_DB_EMPTY,
278 CXGB4_CONTROL_DB_DROP,
293 struct cxgb4_virt_res { /* virtualized HW resources */
294 struct cxgb4_range ddp;
295 struct cxgb4_range iscsi;
296 struct cxgb4_range stag;
297 struct cxgb4_range rq;
298 struct cxgb4_range srq;
299 struct cxgb4_range pbl;
300 struct cxgb4_range qp;
301 struct cxgb4_range cq;
302 struct cxgb4_range ocq;
303 struct cxgb4_range key;
304 unsigned int ncrypto_fc;
305 struct cxgb4_range ppod_edram;
308 struct chcr_stats_debug {
309 atomic_t cipher_rqst;
310 atomic_t digest_rqst;
321 #define OCQ_WIN_OFFSET(pdev, vres) \
322 (pci_resource_len((pdev), 2) - roundup_pow_of_two((vres)->ocq.size))
325 * Block of information the LLD provides to ULDs attaching to a device.
327 struct cxgb4_lld_info {
328 struct pci_dev *pdev; /* associated PCI device */
329 struct l2t_data *l2t; /* L2 table */
330 struct tid_info *tids; /* TID table */
331 struct net_device **ports; /* device ports */
332 const struct cxgb4_virt_res *vr; /* assorted HW resources */
333 const unsigned short *mtus; /* MTU table */
334 const unsigned short *rxq_ids; /* the ULD's Rx queue ids */
335 const unsigned short *ciq_ids; /* the ULD's concentrator IQ ids */
336 unsigned short nrxq; /* # of Rx queues */
337 unsigned short ntxq; /* # of Tx queues */
338 unsigned short nciq; /* # of concentrator IQ */
339 unsigned char nchan:4; /* # of channels */
340 unsigned char nports:4; /* # of ports */
341 unsigned char wr_cred; /* WR 16-byte credits */
342 unsigned char adapter_type; /* type of adapter */
343 unsigned char fw_api_ver; /* FW API version */
344 unsigned char crypto; /* crypto support */
345 unsigned int fw_vers; /* FW version */
346 unsigned int iscsi_iolen; /* iSCSI max I/O length */
347 unsigned int cclk_ps; /* Core clock period in psec */
348 unsigned short udb_density; /* # of user DB/page */
349 unsigned short ucq_density; /* # of user CQs/page */
350 unsigned int sge_host_page_size; /* SGE host page size */
351 unsigned short filt_mode; /* filter optional components */
352 unsigned short tx_modq[NCHAN]; /* maps each tx channel to a */
353 /* scheduler queue */
354 void __iomem *gts_reg; /* address of GTS register */
355 void __iomem *db_reg; /* address of kernel doorbell */
356 int dbfifo_int_thresh; /* doorbell fifo int threshold */
357 unsigned int sge_ingpadboundary; /* SGE ingress padding boundary */
358 unsigned int sge_egrstatuspagesize; /* SGE egress status page size */
359 unsigned int sge_pktshift; /* Padding between CPL and */
361 unsigned int pf; /* Physical Function we're using */
362 bool enable_fw_ofld_conn; /* Enable connection through fw */
364 unsigned int max_ordird_qp; /* Max ORD/IRD depth per RDMA QP */
365 unsigned int max_ird_adapter; /* Max IRD memory per adapter */
366 bool ulptx_memwrite_dsgl; /* use of T5 DSGL allowed */
367 unsigned int iscsi_tagmask; /* iscsi ddp tag mask */
368 unsigned int iscsi_pgsz_order; /* iscsi ddp page size orders */
369 unsigned int iscsi_llimit; /* chip's iscsi region llimit */
370 unsigned int ulp_crypto; /* crypto lookaside support */
371 void **iscsi_ppm; /* iscsi page pod manager */
372 int nodeid; /* device numa node id */
373 bool fr_nsmr_tpte_wr_support; /* FW supports FR_NSMR_TPTE_WR */
374 bool write_w_imm_support; /* FW supports WRITE_WITH_IMMEDIATE */
375 bool write_cmpl_support; /* FW supports WRITE_CMPL WR */
378 struct cxgb4_uld_info {
382 unsigned int rxq_size;
386 void *(*add)(const struct cxgb4_lld_info *p);
387 int (*rx_handler)(void *handle, const __be64 *rsp,
388 const struct pkt_gl *gl);
389 int (*state_change)(void *handle, enum cxgb4_state new_state);
390 int (*control)(void *handle, enum cxgb4_control control, ...);
391 int (*lro_rx_handler)(void *handle, const __be64 *rsp,
392 const struct pkt_gl *gl,
393 struct t4_lro_mgr *lro_mgr,
394 struct napi_struct *napi);
395 void (*lro_flush)(struct t4_lro_mgr *);
396 int (*tx_handler)(struct sk_buff *skb, struct net_device *dev);
399 void cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p);
400 int cxgb4_unregister_uld(enum cxgb4_uld type);
401 int cxgb4_ofld_send(struct net_device *dev, struct sk_buff *skb);
402 int cxgb4_immdata_send(struct net_device *dev, unsigned int idx,
403 const void *src, unsigned int len);
404 int cxgb4_crypto_send(struct net_device *dev, struct sk_buff *skb);
405 unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo);
406 unsigned int cxgb4_port_chan(const struct net_device *dev);
407 unsigned int cxgb4_port_e2cchan(const struct net_device *dev);
408 unsigned int cxgb4_port_viid(const struct net_device *dev);
409 unsigned int cxgb4_tp_smt_idx(enum chip_type chip, unsigned int viid);
410 unsigned int cxgb4_port_idx(const struct net_device *dev);
411 unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu,
413 unsigned int cxgb4_best_aligned_mtu(const unsigned short *mtus,
414 unsigned short header_size,
415 unsigned short data_size_max,
416 unsigned short data_size_align,
417 unsigned int *mtu_idxp);
418 void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4,
419 struct tp_tcp_stats *v6);
420 void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask,
421 const unsigned int *pgsz_order);
422 struct sk_buff *cxgb4_pktgl_to_skb(const struct pkt_gl *gl,
423 unsigned int skb_len, unsigned int pull_len);
424 int cxgb4_sync_txq_pidx(struct net_device *dev, u16 qid, u16 pidx, u16 size);
425 int cxgb4_flush_eq_cache(struct net_device *dev);
426 int cxgb4_read_tpte(struct net_device *dev, u32 stag, __be32 *tpte);
427 u64 cxgb4_read_sge_timestamp(struct net_device *dev);
429 enum cxgb4_bar2_qtype { CXGB4_BAR2_QTYPE_EGRESS, CXGB4_BAR2_QTYPE_INGRESS };
430 int cxgb4_bar2_sge_qregs(struct net_device *dev,
432 enum cxgb4_bar2_qtype qtype,
435 unsigned int *pbar2_qid);
437 #endif /* !__CXGB4_ULD_H */