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 /* ulp_mem_io + ulptx_idata + payload + padding */
48 #define MAX_IMM_ULPTX_WR_LEN (32 + 8 + 256 + 8)
50 /* CPL message priority levels */
52 CPL_PRIORITY_DATA = 0, /* data messages */
53 CPL_PRIORITY_SETUP = 1, /* connection setup messages */
54 CPL_PRIORITY_TEARDOWN = 0, /* connection teardown messages */
55 CPL_PRIORITY_LISTEN = 1, /* listen start/stop messages */
56 CPL_PRIORITY_ACK = 1, /* RX ACK messages */
57 CPL_PRIORITY_CONTROL = 1 /* control messages */
60 #define INIT_TP_WR(w, tid) do { \
61 (w)->wr.wr_hi = htonl(FW_WR_OP_V(FW_TP_WR) | \
62 FW_WR_IMMDLEN_V(sizeof(*w) - sizeof(w->wr))); \
63 (w)->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*w), 16)) | \
64 FW_WR_FLOWID_V(tid)); \
65 (w)->wr.wr_lo = cpu_to_be64(0); \
68 #define INIT_TP_WR_CPL(w, cpl, tid) do { \
70 OPCODE_TID(w) = htonl(MK_OPCODE_TID(cpl, tid)); \
73 #define INIT_ULPTX_WR(w, wrlen, atomic, tid) do { \
74 (w)->wr.wr_hi = htonl(FW_WR_OP_V(FW_ULPTX_WR) | \
75 FW_WR_ATOMIC_V(atomic)); \
76 (w)->wr.wr_mid = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(wrlen, 16)) | \
77 FW_WR_FLOWID_V(tid)); \
78 (w)->wr.wr_lo = cpu_to_be64(0); \
81 /* Special asynchronous notification message */
82 #define CXGB4_MSG_AN ((void *)1)
83 #define TX_ULD(uld)(((uld) != CXGB4_ULD_CRYPTO) ? CXGB4_TX_OFLD :\
92 union aopen_entry *next;
96 * Holds the size, base address, free list start, etc of the TID, server TID,
97 * and active-open TID tables. The tables themselves are allocated dynamically.
103 struct serv_entry *stid_tab;
104 unsigned long *stid_bmap;
106 unsigned int stid_base;
107 unsigned int hash_base;
109 union aopen_entry *atid_tab;
111 unsigned int atid_base;
113 struct filter_entry *ftid_tab;
114 unsigned long *ftid_bmap;
116 unsigned int ftid_base;
117 unsigned int aftid_base;
118 unsigned int aftid_end;
119 /* Server filter region */
120 unsigned int sftid_base;
121 unsigned int nsftids;
123 spinlock_t atid_lock ____cacheline_aligned_in_smp;
124 union aopen_entry *afree;
125 unsigned int atids_in_use;
127 spinlock_t stid_lock;
128 unsigned int stids_in_use;
129 unsigned int v6_stids_in_use;
130 unsigned int sftids_in_use;
132 /* TIDs in the TCAM */
133 atomic_t tids_in_use;
134 /* TIDs in the HASH */
135 atomic_t hash_tids_in_use;
136 atomic_t conns_in_use;
137 /* lock for setting/clearing filter bitmap */
138 spinlock_t ftid_lock;
141 static inline void *lookup_tid(const struct tid_info *t, unsigned int tid)
143 return tid < t->ntids ? t->tid_tab[tid] : NULL;
146 static inline void *lookup_atid(const struct tid_info *t, unsigned int atid)
148 return atid < t->natids ? t->atid_tab[atid].data : NULL;
151 static inline void *lookup_stid(const struct tid_info *t, unsigned int stid)
153 /* Is it a server filter TID? */
154 if (t->nsftids && (stid >= t->sftid_base)) {
155 stid -= t->sftid_base;
158 stid -= t->stid_base;
161 return stid < (t->nstids + t->nsftids) ? t->stid_tab[stid].data : NULL;
164 static inline void cxgb4_insert_tid(struct tid_info *t, void *data,
165 unsigned int tid, unsigned short family)
167 t->tid_tab[tid] = data;
168 if (t->hash_base && (tid >= t->hash_base)) {
169 if (family == AF_INET6)
170 atomic_add(2, &t->hash_tids_in_use);
172 atomic_inc(&t->hash_tids_in_use);
174 if (family == AF_INET6)
175 atomic_add(2, &t->tids_in_use);
177 atomic_inc(&t->tids_in_use);
179 atomic_inc(&t->conns_in_use);
182 int cxgb4_alloc_atid(struct tid_info *t, void *data);
183 int cxgb4_alloc_stid(struct tid_info *t, int family, void *data);
184 int cxgb4_alloc_sftid(struct tid_info *t, int family, void *data);
185 void cxgb4_free_atid(struct tid_info *t, unsigned int atid);
186 void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family);
187 void cxgb4_remove_tid(struct tid_info *t, unsigned int qid, unsigned int tid,
188 unsigned short family);
191 int cxgb4_create_server(const struct net_device *dev, unsigned int stid,
192 __be32 sip, __be16 sport, __be16 vlan,
194 int cxgb4_create_server6(const struct net_device *dev, unsigned int stid,
195 const struct in6_addr *sip, __be16 sport,
197 int cxgb4_remove_server(const struct net_device *dev, unsigned int stid,
198 unsigned int queue, bool ipv6);
199 int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid,
200 __be32 sip, __be16 sport, __be16 vlan,
202 unsigned char port, unsigned char mask);
203 int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid,
204 unsigned int queue, bool ipv6);
206 /* Filter operation context to allow callers of cxgb4_set_filter() and
207 * cxgb4_del_filter() to wait for an asynchronous completion.
210 struct completion completion; /* completion rendezvous */
211 void *closure; /* caller's opaque information */
212 int result; /* result of operation */
213 u32 tid; /* to store tid */
216 struct ch_filter_specification;
218 int cxgb4_get_free_ftid(struct net_device *dev, int family);
219 int __cxgb4_set_filter(struct net_device *dev, int filter_id,
220 struct ch_filter_specification *fs,
221 struct filter_ctx *ctx);
222 int __cxgb4_del_filter(struct net_device *dev, int filter_id,
223 struct ch_filter_specification *fs,
224 struct filter_ctx *ctx);
225 int cxgb4_set_filter(struct net_device *dev, int filter_id,
226 struct ch_filter_specification *fs);
227 int cxgb4_del_filter(struct net_device *dev, int filter_id,
228 struct ch_filter_specification *fs);
229 int cxgb4_get_filter_counters(struct net_device *dev, unsigned int fidx,
230 u64 *hitcnt, u64 *bytecnt, bool hash);
232 static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue)
234 skb_set_queue_mapping(skb, (queue << 1) | prio);
253 enum cxgb4_txq_type {
262 CXGB4_STATE_START_RECOVERY,
265 CXGB4_STATE_FATAL_ERROR
269 CXGB4_CONTROL_DB_FULL,
270 CXGB4_CONTROL_DB_EMPTY,
271 CXGB4_CONTROL_DB_DROP,
286 struct cxgb4_virt_res { /* virtualized HW resources */
287 struct cxgb4_range ddp;
288 struct cxgb4_range iscsi;
289 struct cxgb4_range stag;
290 struct cxgb4_range rq;
291 struct cxgb4_range srq;
292 struct cxgb4_range pbl;
293 struct cxgb4_range qp;
294 struct cxgb4_range cq;
295 struct cxgb4_range ocq;
296 struct cxgb4_range key;
297 unsigned int ncrypto_fc;
300 struct chcr_stats_debug {
301 atomic_t cipher_rqst;
302 atomic_t digest_rqst;
313 #define OCQ_WIN_OFFSET(pdev, vres) \
314 (pci_resource_len((pdev), 2) - roundup_pow_of_two((vres)->ocq.size))
317 * Block of information the LLD provides to ULDs attaching to a device.
319 struct cxgb4_lld_info {
320 struct pci_dev *pdev; /* associated PCI device */
321 struct l2t_data *l2t; /* L2 table */
322 struct tid_info *tids; /* TID table */
323 struct net_device **ports; /* device ports */
324 const struct cxgb4_virt_res *vr; /* assorted HW resources */
325 const unsigned short *mtus; /* MTU table */
326 const unsigned short *rxq_ids; /* the ULD's Rx queue ids */
327 const unsigned short *ciq_ids; /* the ULD's concentrator IQ ids */
328 unsigned short nrxq; /* # of Rx queues */
329 unsigned short ntxq; /* # of Tx queues */
330 unsigned short nciq; /* # of concentrator IQ */
331 unsigned char nchan:4; /* # of channels */
332 unsigned char nports:4; /* # of ports */
333 unsigned char wr_cred; /* WR 16-byte credits */
334 unsigned char adapter_type; /* type of adapter */
335 unsigned char fw_api_ver; /* FW API version */
336 unsigned char crypto; /* crypto support */
337 unsigned int fw_vers; /* FW version */
338 unsigned int iscsi_iolen; /* iSCSI max I/O length */
339 unsigned int cclk_ps; /* Core clock period in psec */
340 unsigned short udb_density; /* # of user DB/page */
341 unsigned short ucq_density; /* # of user CQs/page */
342 unsigned short filt_mode; /* filter optional components */
343 unsigned short tx_modq[NCHAN]; /* maps each tx channel to a */
344 /* scheduler queue */
345 void __iomem *gts_reg; /* address of GTS register */
346 void __iomem *db_reg; /* address of kernel doorbell */
347 int dbfifo_int_thresh; /* doorbell fifo int threshold */
348 unsigned int sge_ingpadboundary; /* SGE ingress padding boundary */
349 unsigned int sge_egrstatuspagesize; /* SGE egress status page size */
350 unsigned int sge_pktshift; /* Padding between CPL and */
352 unsigned int pf; /* Physical Function we're using */
353 bool enable_fw_ofld_conn; /* Enable connection through fw */
355 unsigned int max_ordird_qp; /* Max ORD/IRD depth per RDMA QP */
356 unsigned int max_ird_adapter; /* Max IRD memory per adapter */
357 bool ulptx_memwrite_dsgl; /* use of T5 DSGL allowed */
358 unsigned int iscsi_tagmask; /* iscsi ddp tag mask */
359 unsigned int iscsi_pgsz_order; /* iscsi ddp page size orders */
360 unsigned int iscsi_llimit; /* chip's iscsi region llimit */
361 unsigned int ulp_crypto; /* crypto lookaside support */
362 void **iscsi_ppm; /* iscsi page pod manager */
363 int nodeid; /* device numa node id */
364 bool fr_nsmr_tpte_wr_support; /* FW supports FR_NSMR_TPTE_WR */
365 bool write_w_imm_support; /* FW supports WRITE_WITH_IMMEDIATE */
366 bool write_cmpl_support; /* FW supports WRITE_CMPL WR */
369 struct cxgb4_uld_info {
373 unsigned int rxq_size;
377 void *(*add)(const struct cxgb4_lld_info *p);
378 int (*rx_handler)(void *handle, const __be64 *rsp,
379 const struct pkt_gl *gl);
380 int (*state_change)(void *handle, enum cxgb4_state new_state);
381 int (*control)(void *handle, enum cxgb4_control control, ...);
382 int (*lro_rx_handler)(void *handle, const __be64 *rsp,
383 const struct pkt_gl *gl,
384 struct t4_lro_mgr *lro_mgr,
385 struct napi_struct *napi);
386 void (*lro_flush)(struct t4_lro_mgr *);
387 int (*tx_handler)(struct sk_buff *skb, struct net_device *dev);
390 int cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p);
391 int cxgb4_unregister_uld(enum cxgb4_uld type);
392 int cxgb4_ofld_send(struct net_device *dev, struct sk_buff *skb);
393 int cxgb4_immdata_send(struct net_device *dev, unsigned int idx,
394 const void *src, unsigned int len);
395 int cxgb4_crypto_send(struct net_device *dev, struct sk_buff *skb);
396 unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo);
397 unsigned int cxgb4_port_chan(const struct net_device *dev);
398 unsigned int cxgb4_port_viid(const struct net_device *dev);
399 unsigned int cxgb4_tp_smt_idx(enum chip_type chip, unsigned int viid);
400 unsigned int cxgb4_port_idx(const struct net_device *dev);
401 unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu,
403 unsigned int cxgb4_best_aligned_mtu(const unsigned short *mtus,
404 unsigned short header_size,
405 unsigned short data_size_max,
406 unsigned short data_size_align,
407 unsigned int *mtu_idxp);
408 void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4,
409 struct tp_tcp_stats *v6);
410 void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask,
411 const unsigned int *pgsz_order);
412 struct sk_buff *cxgb4_pktgl_to_skb(const struct pkt_gl *gl,
413 unsigned int skb_len, unsigned int pull_len);
414 int cxgb4_sync_txq_pidx(struct net_device *dev, u16 qid, u16 pidx, u16 size);
415 int cxgb4_flush_eq_cache(struct net_device *dev);
416 int cxgb4_read_tpte(struct net_device *dev, u32 stag, __be32 *tpte);
417 u64 cxgb4_read_sge_timestamp(struct net_device *dev);
419 enum cxgb4_bar2_qtype { CXGB4_BAR2_QTYPE_EGRESS, CXGB4_BAR2_QTYPE_INGRESS };
420 int cxgb4_bar2_sge_qregs(struct net_device *dev,
422 enum cxgb4_bar2_qtype qtype,
425 unsigned int *pbar2_qid);
427 #endif /* !__CXGB4_ULD_H */