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
40 #include <linux/bitops.h>
41 #include <linux/cache.h>
42 #include <linux/interrupt.h>
43 #include <linux/list.h>
44 #include <linux/netdevice.h>
45 #include <linux/pci.h>
46 #include <linux/spinlock.h>
47 #include <linux/timer.h>
48 #include <linux/vmalloc.h>
50 #include "cxgb4_uld.h"
52 #define CH_WARN(adap, fmt, ...) dev_warn(adap->pdev_dev, fmt, ## __VA_ARGS__)
55 MAX_NPORTS = 4, /* max # of ports */
56 SERNUM_LEN = 24, /* Serial # length */
57 EC_LEN = 16, /* E/C length */
58 ID_LEN = 16, /* ID length */
59 PN_LEN = 16, /* Part Number length */
71 MEMWIN0_APERTURE = 2048,
72 MEMWIN0_BASE = 0x1b800,
73 MEMWIN1_APERTURE = 32768,
74 MEMWIN1_BASE = 0x28000,
75 MEMWIN1_BASE_T5 = 0x52000,
76 MEMWIN2_APERTURE = 65536,
77 MEMWIN2_BASE = 0x30000,
78 MEMWIN2_APERTURE_T5 = 131072,
79 MEMWIN2_BASE_T5 = 0x60000,
97 PAUSE_AUTONEG = 1 << 2
101 u64 tx_octets; /* total # of octets in good frames */
102 u64 tx_frames; /* all good frames */
103 u64 tx_bcast_frames; /* all broadcast frames */
104 u64 tx_mcast_frames; /* all multicast frames */
105 u64 tx_ucast_frames; /* all unicast frames */
106 u64 tx_error_frames; /* all error frames */
108 u64 tx_frames_64; /* # of Tx frames in a particular range */
109 u64 tx_frames_65_127;
110 u64 tx_frames_128_255;
111 u64 tx_frames_256_511;
112 u64 tx_frames_512_1023;
113 u64 tx_frames_1024_1518;
114 u64 tx_frames_1519_max;
116 u64 tx_drop; /* # of dropped Tx frames */
117 u64 tx_pause; /* # of transmitted pause frames */
118 u64 tx_ppp0; /* # of transmitted PPP prio 0 frames */
119 u64 tx_ppp1; /* # of transmitted PPP prio 1 frames */
120 u64 tx_ppp2; /* # of transmitted PPP prio 2 frames */
121 u64 tx_ppp3; /* # of transmitted PPP prio 3 frames */
122 u64 tx_ppp4; /* # of transmitted PPP prio 4 frames */
123 u64 tx_ppp5; /* # of transmitted PPP prio 5 frames */
124 u64 tx_ppp6; /* # of transmitted PPP prio 6 frames */
125 u64 tx_ppp7; /* # of transmitted PPP prio 7 frames */
127 u64 rx_octets; /* total # of octets in good frames */
128 u64 rx_frames; /* all good frames */
129 u64 rx_bcast_frames; /* all broadcast frames */
130 u64 rx_mcast_frames; /* all multicast frames */
131 u64 rx_ucast_frames; /* all unicast frames */
132 u64 rx_too_long; /* # of frames exceeding MTU */
133 u64 rx_jabber; /* # of jabber frames */
134 u64 rx_fcs_err; /* # of received frames with bad FCS */
135 u64 rx_len_err; /* # of received frames with length error */
136 u64 rx_symbol_err; /* symbol errors */
137 u64 rx_runt; /* # of short frames */
139 u64 rx_frames_64; /* # of Rx frames in a particular range */
140 u64 rx_frames_65_127;
141 u64 rx_frames_128_255;
142 u64 rx_frames_256_511;
143 u64 rx_frames_512_1023;
144 u64 rx_frames_1024_1518;
145 u64 rx_frames_1519_max;
147 u64 rx_pause; /* # of received pause frames */
148 u64 rx_ppp0; /* # of received PPP prio 0 frames */
149 u64 rx_ppp1; /* # of received PPP prio 1 frames */
150 u64 rx_ppp2; /* # of received PPP prio 2 frames */
151 u64 rx_ppp3; /* # of received PPP prio 3 frames */
152 u64 rx_ppp4; /* # of received PPP prio 4 frames */
153 u64 rx_ppp5; /* # of received PPP prio 5 frames */
154 u64 rx_ppp6; /* # of received PPP prio 6 frames */
155 u64 rx_ppp7; /* # of received PPP prio 7 frames */
157 u64 rx_ovflow0; /* drops due to buffer-group 0 overflows */
158 u64 rx_ovflow1; /* drops due to buffer-group 1 overflows */
159 u64 rx_ovflow2; /* drops due to buffer-group 2 overflows */
160 u64 rx_ovflow3; /* drops due to buffer-group 3 overflows */
161 u64 rx_trunc0; /* buffer-group 0 truncated packets */
162 u64 rx_trunc1; /* buffer-group 1 truncated packets */
163 u64 rx_trunc2; /* buffer-group 2 truncated packets */
164 u64 rx_trunc3; /* buffer-group 3 truncated packets */
167 struct lb_port_stats {
180 u64 frames_1024_1518;
195 struct tp_tcp_stats {
202 struct tp_err_stats {
207 u32 ofldChanDrops[4];
209 u32 ofldVlanDrops[4];
216 u32 hps; /* host page size for our PF/VF */
217 u32 eq_qpp; /* egress queues/page for our PF/VF */
218 u32 iq_qpp; /* egress queues/page for our PF/VF */
222 unsigned int ntxchan; /* # of Tx channels */
223 unsigned int tre; /* log2 of core clocks per TP tick */
224 unsigned short tx_modq_map; /* TX modulation scheduler queue to */
227 uint32_t dack_re; /* DACK timer resolution */
228 unsigned short tx_modq[NCHAN]; /* channel to modulation queue map */
230 u32 vlan_pri_map; /* cached TP_VLAN_PRI_MAP */
231 u32 ingress_config; /* cached TP_INGRESS_CONFIG */
233 /* TP_VLAN_PRI_MAP Compressed Filter Tuple field offsets. This is a
234 * subset of the set of fields which may be present in the Compressed
235 * Filter Tuple portion of filters and TCP TCB connections. The
236 * fields which are present are controlled by the TP_VLAN_PRI_MAP.
237 * Since a variable number of fields may or may not be present, their
238 * shifted field positions within the Compressed Filter Tuple may
239 * vary, or not even be present if the field isn't selected in
240 * TP_VLAN_PRI_MAP. Since some of these fields are needed in various
241 * places we store their offsets here, or a -1 if the field isn't
253 u8 sn[SERNUM_LEN + 1];
263 #define CHELSIO_CHIP_CODE(version, revision) (((version) << 4) | (revision))
264 #define CHELSIO_CHIP_FPGA 0x100
265 #define CHELSIO_CHIP_VERSION(code) (((code) >> 4) & 0xf)
266 #define CHELSIO_CHIP_RELEASE(code) ((code) & 0xf)
268 #define CHELSIO_T4 0x4
269 #define CHELSIO_T5 0x5
272 T4_A1 = CHELSIO_CHIP_CODE(CHELSIO_T4, 1),
273 T4_A2 = CHELSIO_CHIP_CODE(CHELSIO_T4, 2),
274 T4_FIRST_REV = T4_A1,
277 T5_A0 = CHELSIO_CHIP_CODE(CHELSIO_T5, 0),
278 T5_A1 = CHELSIO_CHIP_CODE(CHELSIO_T5, 1),
279 T5_FIRST_REV = T5_A0,
283 struct devlog_params {
284 u32 memtype; /* which memory (EDC0, EDC1, MC) */
285 u32 start; /* start of log in firmware memory */
286 u32 size; /* size of log */
289 struct adapter_params {
290 struct sge_params sge;
292 struct vpd_params vpd;
293 struct pci_params pci;
294 struct devlog_params devlog;
295 enum pcie_memwin drv_memwin;
297 unsigned int cim_la_size;
299 unsigned int sf_size; /* serial flash size in bytes */
300 unsigned int sf_nsec; /* # of flash sectors */
301 unsigned int sf_fw_start; /* start of FW image in flash */
303 unsigned int fw_vers;
304 unsigned int tp_vers;
307 unsigned short mtus[NMTUS];
308 unsigned short a_wnd[NCCTRL_WIN];
309 unsigned short b_wnd[NCCTRL_WIN];
311 unsigned char nports; /* # of ethernet ports */
312 unsigned char portvec;
313 enum chip_type chip; /* chip code */
314 unsigned char offload;
316 unsigned char bypass;
318 unsigned int ofldq_wr_cred;
319 bool ulptx_memwrite_dsgl; /* use of T5 DSGL allowed */
321 unsigned int max_ordird_qp; /* Max read depth per RDMA QP */
322 unsigned int max_ird_adapter; /* Max read depth per adapter */
325 #include "t4fw_api.h"
327 #define FW_VERSION(chip) ( \
328 FW_HDR_FW_VER_MAJOR_G(chip##FW_VERSION_MAJOR) | \
329 FW_HDR_FW_VER_MINOR_G(chip##FW_VERSION_MINOR) | \
330 FW_HDR_FW_VER_MICRO_G(chip##FW_VERSION_MICRO) | \
331 FW_HDR_FW_VER_BUILD_G(chip##FW_VERSION_BUILD))
332 #define FW_INTFVER(chip, intf) (FW_HDR_INTFVER_##intf)
338 struct fw_hdr fw_hdr;
342 struct trace_params {
343 u32 data[TRACE_LEN / 4];
344 u32 mask[TRACE_LEN / 4];
345 unsigned short snap_len;
346 unsigned short min_len;
347 unsigned char skip_ofst;
348 unsigned char skip_len;
349 unsigned char invert;
354 unsigned short supported; /* link capabilities */
355 unsigned short advertising; /* advertised capabilities */
356 unsigned short requested_speed; /* speed user has requested */
357 unsigned short speed; /* actual link speed */
358 unsigned char requested_fc; /* flow control user has requested */
359 unsigned char fc; /* actual link flow control */
360 unsigned char autoneg; /* autonegotiating? */
361 unsigned char link_ok; /* link up? */
364 #define FW_LEN16(fw_struct) FW_CMD_LEN16_V(sizeof(fw_struct) / 16)
367 MAX_ETH_QSETS = 32, /* # of Ethernet Tx/Rx queue sets */
368 MAX_OFLD_QSETS = 16, /* # of offload Tx/Rx queue sets */
369 MAX_CTRL_QUEUES = NCHAN, /* # of control Tx queues */
370 MAX_RDMA_QUEUES = NCHAN, /* # of streaming RDMA Rx queues */
371 MAX_RDMA_CIQS = NCHAN, /* # of RDMA concentrator IQs */
372 MAX_ISCSI_QUEUES = NCHAN, /* # of streaming iSCSI Rx queues */
376 INGQ_EXTRAS = 2, /* firmware event queue and */
377 /* forwarded interrupts */
378 MAX_EGRQ = MAX_ETH_QSETS*2 + MAX_OFLD_QSETS*2
379 + MAX_CTRL_QUEUES + MAX_RDMA_QUEUES + MAX_ISCSI_QUEUES,
380 MAX_INGQ = MAX_ETH_QSETS + MAX_OFLD_QSETS + MAX_RDMA_QUEUES
381 + MAX_RDMA_CIQS + MAX_ISCSI_QUEUES + INGQ_EXTRAS,
387 #include "cxgb4_dcb.h"
390 struct adapter *adapter;
392 s16 xact_addr_filt; /* index of exact MAC address filter */
393 u16 rss_size; /* size of VI's RSS table slice */
395 enum fw_port_type port_type;
399 u8 lport; /* associated offload logical port */
400 u8 nqsets; /* # of qsets */
401 u8 first_qset; /* index of first qset */
403 struct link_config link_cfg;
405 #ifdef CONFIG_CHELSIO_T4_DCB
406 struct port_dcb_info dcb; /* Data Center Bridging support */
413 enum { /* adapter flags */
414 FULL_INIT_DONE = (1 << 0),
415 DEV_ENABLED = (1 << 1),
416 USING_MSI = (1 << 2),
417 USING_MSIX = (1 << 3),
419 RSS_TNLALLLOOKUP = (1 << 5),
420 USING_SOFT_PARAMS = (1 << 6),
421 MASTER_PF = (1 << 7),
422 FW_OFLD_CONN = (1 << 9),
427 struct sge_fl { /* SGE free-buffer queue state */
428 unsigned int avail; /* # of available Rx buffers */
429 unsigned int pend_cred; /* new buffers since last FL DB ring */
430 unsigned int cidx; /* consumer index */
431 unsigned int pidx; /* producer index */
432 unsigned long alloc_failed; /* # of times buffer allocation failed */
433 unsigned long large_alloc_failed;
434 unsigned long starving;
436 unsigned int cntxt_id; /* SGE context id for the free list */
437 unsigned int size; /* capacity of free list */
438 struct rx_sw_desc *sdesc; /* address of SW Rx descriptor ring */
439 __be64 *desc; /* address of HW Rx descriptor ring */
440 dma_addr_t addr; /* bus address of HW ring start */
441 void __iomem *bar2_addr; /* address of BAR2 Queue registers */
442 unsigned int bar2_qid; /* Queue ID for BAR2 Queue registers */
445 /* A packet gather list */
447 struct page_frag frags[MAX_SKB_FRAGS];
448 void *va; /* virtual address of first byte */
449 unsigned int nfrags; /* # of fragments */
450 unsigned int tot_len; /* total length of fragments */
453 typedef int (*rspq_handler_t)(struct sge_rspq *q, const __be64 *rsp,
454 const struct pkt_gl *gl);
456 struct sge_rspq { /* state for an SGE response queue */
457 struct napi_struct napi;
458 const __be64 *cur_desc; /* current descriptor in queue */
459 unsigned int cidx; /* consumer index */
460 u8 gen; /* current generation bit */
461 u8 intr_params; /* interrupt holdoff parameters */
462 u8 next_intr_params; /* holdoff params for next interrupt */
464 u8 pktcnt_idx; /* interrupt packet threshold */
465 u8 uld; /* ULD handling this queue */
466 u8 idx; /* queue index within its group */
467 int offset; /* offset into current Rx buffer */
468 u16 cntxt_id; /* SGE context id for the response q */
469 u16 abs_id; /* absolute SGE id for the response q */
470 __be64 *desc; /* address of HW response ring */
471 dma_addr_t phys_addr; /* physical address of the ring */
472 void __iomem *bar2_addr; /* address of BAR2 Queue registers */
473 unsigned int bar2_qid; /* Queue ID for BAR2 Queue registers */
474 unsigned int iqe_len; /* entry size */
475 unsigned int size; /* capacity of response queue */
476 struct adapter *adap;
477 struct net_device *netdev; /* associated net device */
478 rspq_handler_t handler;
479 #ifdef CONFIG_NET_RX_BUSY_POLL
480 #define CXGB_POLL_STATE_IDLE 0
481 #define CXGB_POLL_STATE_NAPI BIT(0) /* NAPI owns this poll */
482 #define CXGB_POLL_STATE_POLL BIT(1) /* poll owns this poll */
483 #define CXGB_POLL_STATE_NAPI_YIELD BIT(2) /* NAPI yielded this poll */
484 #define CXGB_POLL_STATE_POLL_YIELD BIT(3) /* poll yielded this poll */
485 #define CXGB_POLL_YIELD (CXGB_POLL_STATE_NAPI_YIELD | \
486 CXGB_POLL_STATE_POLL_YIELD)
487 #define CXGB_POLL_LOCKED (CXGB_POLL_STATE_NAPI | \
488 CXGB_POLL_STATE_POLL)
489 #define CXGB_POLL_USER_PEND (CXGB_POLL_STATE_POLL | \
490 CXGB_POLL_STATE_POLL_YIELD)
491 unsigned int bpoll_state;
492 spinlock_t bpoll_lock; /* lock for busy poll */
493 #endif /* CONFIG_NET_RX_BUSY_POLL */
497 struct sge_eth_stats { /* Ethernet queue statistics */
498 unsigned long pkts; /* # of ethernet packets */
499 unsigned long lro_pkts; /* # of LRO super packets */
500 unsigned long lro_merged; /* # of wire packets merged by LRO */
501 unsigned long rx_cso; /* # of Rx checksum offloads */
502 unsigned long vlan_ex; /* # of Rx VLAN extractions */
503 unsigned long rx_drops; /* # of packets dropped due to no mem */
506 struct sge_eth_rxq { /* SW Ethernet Rx queue */
507 struct sge_rspq rspq;
509 struct sge_eth_stats stats;
510 } ____cacheline_aligned_in_smp;
512 struct sge_ofld_stats { /* offload queue statistics */
513 unsigned long pkts; /* # of packets */
514 unsigned long imm; /* # of immediate-data packets */
515 unsigned long an; /* # of asynchronous notifications */
516 unsigned long nomem; /* # of responses deferred due to no mem */
519 struct sge_ofld_rxq { /* SW offload Rx queue */
520 struct sge_rspq rspq;
522 struct sge_ofld_stats stats;
523 } ____cacheline_aligned_in_smp;
532 unsigned int in_use; /* # of in-use Tx descriptors */
533 unsigned int size; /* # of descriptors */
534 unsigned int cidx; /* SW consumer index */
535 unsigned int pidx; /* producer index */
536 unsigned long stops; /* # of times q has been stopped */
537 unsigned long restarts; /* # of queue restarts */
538 unsigned int cntxt_id; /* SGE context id for the Tx q */
539 struct tx_desc *desc; /* address of HW Tx descriptor ring */
540 struct tx_sw_desc *sdesc; /* address of SW Tx descriptor ring */
541 struct sge_qstat *stat; /* queue status entry */
542 dma_addr_t phys_addr; /* physical address of the ring */
545 unsigned short db_pidx;
546 unsigned short db_pidx_inc;
547 void __iomem *bar2_addr; /* address of BAR2 Queue registers */
548 unsigned int bar2_qid; /* Queue ID for BAR2 Queue registers */
551 struct sge_eth_txq { /* state for an SGE Ethernet Tx queue */
553 struct netdev_queue *txq; /* associated netdev TX queue */
554 #ifdef CONFIG_CHELSIO_T4_DCB
555 u8 dcb_prio; /* DCB Priority bound to queue */
557 unsigned long tso; /* # of TSO requests */
558 unsigned long tx_cso; /* # of Tx checksum offloads */
559 unsigned long vlan_ins; /* # of Tx VLAN insertions */
560 unsigned long mapping_err; /* # of I/O MMU packet mapping errors */
561 } ____cacheline_aligned_in_smp;
563 struct sge_ofld_txq { /* state for an SGE offload Tx queue */
565 struct adapter *adap;
566 struct sk_buff_head sendq; /* list of backpressured packets */
567 struct tasklet_struct qresume_tsk; /* restarts the queue */
568 u8 full; /* the Tx ring is full */
569 unsigned long mapping_err; /* # of I/O MMU packet mapping errors */
570 } ____cacheline_aligned_in_smp;
572 struct sge_ctrl_txq { /* state for an SGE control Tx queue */
574 struct adapter *adap;
575 struct sk_buff_head sendq; /* list of backpressured packets */
576 struct tasklet_struct qresume_tsk; /* restarts the queue */
577 u8 full; /* the Tx ring is full */
578 } ____cacheline_aligned_in_smp;
581 struct sge_eth_txq ethtxq[MAX_ETH_QSETS];
582 struct sge_ofld_txq ofldtxq[MAX_OFLD_QSETS];
583 struct sge_ctrl_txq ctrlq[MAX_CTRL_QUEUES];
585 struct sge_eth_rxq ethrxq[MAX_ETH_QSETS];
586 struct sge_ofld_rxq ofldrxq[MAX_OFLD_QSETS];
587 struct sge_ofld_rxq rdmarxq[MAX_RDMA_QUEUES];
588 struct sge_ofld_rxq rdmaciq[MAX_RDMA_CIQS];
589 struct sge_rspq fw_evtq ____cacheline_aligned_in_smp;
591 struct sge_rspq intrq ____cacheline_aligned_in_smp;
592 spinlock_t intrq_lock;
594 u16 max_ethqsets; /* # of available Ethernet queue sets */
595 u16 ethqsets; /* # of active Ethernet queue sets */
596 u16 ethtxq_rover; /* Tx queue to clean up next */
597 u16 ofldqsets; /* # of active offload queue sets */
598 u16 rdmaqs; /* # of available RDMA Rx queues */
599 u16 rdmaciqs; /* # of available RDMA concentrator IQs */
600 u16 ofld_rxq[MAX_OFLD_QSETS];
603 u16 timer_val[SGE_NTIMERS];
604 u8 counter_val[SGE_NCOUNTERS];
605 u32 fl_pg_order; /* large page allocation size */
606 u32 stat_len; /* length of status page at ring end */
607 u32 pktshift; /* padding between CPL & packet data */
608 u32 fl_align; /* response queue message alignment */
609 u32 fl_starve_thres; /* Free List starvation threshold */
611 /* State variables for detecting an SGE Ingress DMA hang */
612 unsigned int idma_1s_thresh;/* SGE same State Counter 1s threshold */
613 unsigned int idma_stalled[2];/* SGE synthesized stalled timers in HZ */
614 unsigned int idma_state[2]; /* SGE IDMA Hang detect state */
615 unsigned int idma_qid[2]; /* SGE IDMA Hung Ingress Queue ID */
617 unsigned int egr_start;
618 unsigned int ingr_start;
619 void *egr_map[MAX_EGRQ]; /* qid->queue egress queue map */
620 struct sge_rspq *ingr_map[MAX_INGQ]; /* qid->queue ingress queue map */
621 DECLARE_BITMAP(starving_fl, MAX_EGRQ);
622 DECLARE_BITMAP(txq_maperr, MAX_EGRQ);
623 struct timer_list rx_timer; /* refills starving FLs */
624 struct timer_list tx_timer; /* checks Tx queues */
627 #define for_each_ethrxq(sge, i) for (i = 0; i < (sge)->ethqsets; i++)
628 #define for_each_ofldrxq(sge, i) for (i = 0; i < (sge)->ofldqsets; i++)
629 #define for_each_rdmarxq(sge, i) for (i = 0; i < (sge)->rdmaqs; i++)
630 #define for_each_rdmaciq(sge, i) for (i = 0; i < (sge)->rdmaciqs; i++)
634 #ifdef CONFIG_PCI_IOV
636 /* T4 supports SRIOV on PF0-3 and T5 on PF0-7. However, the Serial
637 * Configuration initialization for T5 only has SR-IOV functionality enabled
638 * on PF0-3 in order to simplify everything.
640 #define NUM_OF_PF_WITH_SRIOV 4
648 struct pci_dev *pdev;
649 struct device *pdev_dev;
657 struct adapter_params params;
658 struct cxgb4_virt_res vres;
665 char desc[IFNAMSIZ + 10];
666 } msix_info[MAX_INGQ + 1];
670 struct net_device *port[MAX_NPORTS];
671 u8 chan_map[NCHAN]; /* channel -> port map */
674 unsigned int l2t_start;
675 unsigned int l2t_end;
676 struct l2t_data *l2t;
677 unsigned int clipt_start;
678 unsigned int clipt_end;
679 struct clip_tbl *clipt;
680 void *uld_handle[CXGB4_ULD_MAX];
681 struct list_head list_node;
682 struct list_head rcu_node;
684 struct tid_info tids;
685 void **tid_release_head;
686 spinlock_t tid_release_lock;
687 struct workqueue_struct *workq;
688 struct work_struct tid_release_task;
689 struct work_struct db_full_task;
690 struct work_struct db_drop_task;
691 bool tid_release_task_busy;
693 struct dentry *debugfs_root;
695 spinlock_t stats_lock;
696 spinlock_t win0_lock ____cacheline_aligned_in_smp;
699 /* Defined bit width of user definable filter tuples
701 #define ETHTYPE_BITWIDTH 16
702 #define FRAG_BITWIDTH 1
703 #define MACIDX_BITWIDTH 9
704 #define FCOE_BITWIDTH 1
705 #define IPORT_BITWIDTH 3
706 #define MATCHTYPE_BITWIDTH 3
707 #define PROTO_BITWIDTH 8
708 #define TOS_BITWIDTH 8
709 #define PF_BITWIDTH 8
710 #define VF_BITWIDTH 8
711 #define IVLAN_BITWIDTH 16
712 #define OVLAN_BITWIDTH 16
714 /* Filter matching rules. These consist of a set of ingress packet field
715 * (value, mask) tuples. The associated ingress packet field matches the
716 * tuple when ((field & mask) == value). (Thus a wildcard "don't care" field
717 * rule can be constructed by specifying a tuple of (0, 0).) A filter rule
718 * matches an ingress packet when all of the individual individual field
719 * matching rules are true.
721 * Partial field masks are always valid, however, while it may be easy to
722 * understand their meanings for some fields (e.g. IP address to match a
723 * subnet), for others making sensible partial masks is less intuitive (e.g.
724 * MPS match type) ...
726 * Most of the following data structures are modeled on T4 capabilities.
727 * Drivers for earlier chips use the subsets which make sense for those chips.
728 * We really need to come up with a hardware-independent mechanism to
729 * represent hardware filter capabilities ...
731 struct ch_filter_tuple {
732 /* Compressed header matching field rules. The TP_VLAN_PRI_MAP
733 * register selects which of these fields will participate in the
734 * filter match rules -- up to a maximum of 36 bits. Because
735 * TP_VLAN_PRI_MAP is a global register, all filters must use the same
738 uint32_t ethtype:ETHTYPE_BITWIDTH; /* Ethernet type */
739 uint32_t frag:FRAG_BITWIDTH; /* IP fragmentation header */
740 uint32_t ivlan_vld:1; /* inner VLAN valid */
741 uint32_t ovlan_vld:1; /* outer VLAN valid */
742 uint32_t pfvf_vld:1; /* PF/VF valid */
743 uint32_t macidx:MACIDX_BITWIDTH; /* exact match MAC index */
744 uint32_t fcoe:FCOE_BITWIDTH; /* FCoE packet */
745 uint32_t iport:IPORT_BITWIDTH; /* ingress port */
746 uint32_t matchtype:MATCHTYPE_BITWIDTH; /* MPS match type */
747 uint32_t proto:PROTO_BITWIDTH; /* protocol type */
748 uint32_t tos:TOS_BITWIDTH; /* TOS/Traffic Type */
749 uint32_t pf:PF_BITWIDTH; /* PCI-E PF ID */
750 uint32_t vf:VF_BITWIDTH; /* PCI-E VF ID */
751 uint32_t ivlan:IVLAN_BITWIDTH; /* inner VLAN */
752 uint32_t ovlan:OVLAN_BITWIDTH; /* outer VLAN */
754 /* Uncompressed header matching field rules. These are always
755 * available for field rules.
757 uint8_t lip[16]; /* local IP address (IPv4 in [3:0]) */
758 uint8_t fip[16]; /* foreign IP address (IPv4 in [3:0]) */
759 uint16_t lport; /* local port */
760 uint16_t fport; /* foreign port */
763 /* A filter ioctl command.
765 struct ch_filter_specification {
766 /* Administrative fields for filter.
768 uint32_t hitcnts:1; /* count filter hits in TCB */
769 uint32_t prio:1; /* filter has priority over active/server */
771 /* Fundamental filter typing. This is the one element of filter
772 * matching that doesn't exist as a (value, mask) tuple.
774 uint32_t type:1; /* 0 => IPv4, 1 => IPv6 */
776 /* Packet dispatch information. Ingress packets which match the
777 * filter rules will be dropped, passed to the host or switched back
778 * out as egress packets.
780 uint32_t action:2; /* drop, pass, switch */
782 uint32_t rpttid:1; /* report TID in RSS hash field */
784 uint32_t dirsteer:1; /* 0 => RSS, 1 => steer to iq */
785 uint32_t iq:10; /* ingress queue */
787 uint32_t maskhash:1; /* dirsteer=0: store RSS hash in TCB */
788 uint32_t dirsteerhash:1;/* dirsteer=1: 0 => TCB contains RSS hash */
789 /* 1 => TCB contains IQ ID */
791 /* Switch proxy/rewrite fields. An ingress packet which matches a
792 * filter with "switch" set will be looped back out as an egress
793 * packet -- potentially with some Ethernet header rewriting.
795 uint32_t eport:2; /* egress port to switch packet out */
796 uint32_t newdmac:1; /* rewrite destination MAC address */
797 uint32_t newsmac:1; /* rewrite source MAC address */
798 uint32_t newvlan:2; /* rewrite VLAN Tag */
799 uint8_t dmac[ETH_ALEN]; /* new destination MAC address */
800 uint8_t smac[ETH_ALEN]; /* new source MAC address */
801 uint16_t vlan; /* VLAN Tag to insert */
803 /* Filter rule value/mask pairs.
805 struct ch_filter_tuple val;
806 struct ch_filter_tuple mask;
810 FILTER_PASS = 0, /* default */
816 VLAN_NOCHANGE = 0, /* default */
822 static inline int is_t5(enum chip_type chip)
824 return CHELSIO_CHIP_VERSION(chip) == CHELSIO_T5;
827 static inline int is_t4(enum chip_type chip)
829 return CHELSIO_CHIP_VERSION(chip) == CHELSIO_T4;
832 static inline u32 t4_read_reg(struct adapter *adap, u32 reg_addr)
834 return readl(adap->regs + reg_addr);
837 static inline void t4_write_reg(struct adapter *adap, u32 reg_addr, u32 val)
839 writel(val, adap->regs + reg_addr);
843 static inline u64 readq(const volatile void __iomem *addr)
845 return readl(addr) + ((u64)readl(addr + 4) << 32);
848 static inline void writeq(u64 val, volatile void __iomem *addr)
851 writel(val >> 32, addr + 4);
855 static inline u64 t4_read_reg64(struct adapter *adap, u32 reg_addr)
857 return readq(adap->regs + reg_addr);
860 static inline void t4_write_reg64(struct adapter *adap, u32 reg_addr, u64 val)
862 writeq(val, adap->regs + reg_addr);
866 * netdev2pinfo - return the port_info structure associated with a net_device
869 * Return the struct port_info associated with a net_device
871 static inline struct port_info *netdev2pinfo(const struct net_device *dev)
873 return netdev_priv(dev);
877 * adap2pinfo - return the port_info of a port
879 * @idx: the port index
881 * Return the port_info structure for the port of the given index.
883 static inline struct port_info *adap2pinfo(struct adapter *adap, int idx)
885 return netdev_priv(adap->port[idx]);
889 * netdev2adap - return the adapter structure associated with a net_device
892 * Return the struct adapter associated with a net_device
894 static inline struct adapter *netdev2adap(const struct net_device *dev)
896 return netdev2pinfo(dev)->adapter;
899 #ifdef CONFIG_NET_RX_BUSY_POLL
900 static inline void cxgb_busy_poll_init_lock(struct sge_rspq *q)
902 spin_lock_init(&q->bpoll_lock);
903 q->bpoll_state = CXGB_POLL_STATE_IDLE;
906 static inline bool cxgb_poll_lock_napi(struct sge_rspq *q)
910 spin_lock(&q->bpoll_lock);
911 if (q->bpoll_state & CXGB_POLL_LOCKED) {
912 q->bpoll_state |= CXGB_POLL_STATE_NAPI_YIELD;
915 q->bpoll_state = CXGB_POLL_STATE_NAPI;
917 spin_unlock(&q->bpoll_lock);
921 static inline bool cxgb_poll_unlock_napi(struct sge_rspq *q)
925 spin_lock(&q->bpoll_lock);
926 if (q->bpoll_state & CXGB_POLL_STATE_POLL_YIELD)
928 q->bpoll_state = CXGB_POLL_STATE_IDLE;
929 spin_unlock(&q->bpoll_lock);
933 static inline bool cxgb_poll_lock_poll(struct sge_rspq *q)
937 spin_lock_bh(&q->bpoll_lock);
938 if (q->bpoll_state & CXGB_POLL_LOCKED) {
939 q->bpoll_state |= CXGB_POLL_STATE_POLL_YIELD;
942 q->bpoll_state |= CXGB_POLL_STATE_POLL;
944 spin_unlock_bh(&q->bpoll_lock);
948 static inline bool cxgb_poll_unlock_poll(struct sge_rspq *q)
952 spin_lock_bh(&q->bpoll_lock);
953 if (q->bpoll_state & CXGB_POLL_STATE_POLL_YIELD)
955 q->bpoll_state = CXGB_POLL_STATE_IDLE;
956 spin_unlock_bh(&q->bpoll_lock);
960 static inline bool cxgb_poll_busy_polling(struct sge_rspq *q)
962 return q->bpoll_state & CXGB_POLL_USER_PEND;
965 static inline void cxgb_busy_poll_init_lock(struct sge_rspq *q)
969 static inline bool cxgb_poll_lock_napi(struct sge_rspq *q)
974 static inline bool cxgb_poll_unlock_napi(struct sge_rspq *q)
979 static inline bool cxgb_poll_lock_poll(struct sge_rspq *q)
984 static inline bool cxgb_poll_unlock_poll(struct sge_rspq *q)
989 static inline bool cxgb_poll_busy_polling(struct sge_rspq *q)
993 #endif /* CONFIG_NET_RX_BUSY_POLL */
995 void t4_os_portmod_changed(const struct adapter *adap, int port_id);
996 void t4_os_link_changed(struct adapter *adap, int port_id, int link_stat);
998 void *t4_alloc_mem(size_t size);
1000 void t4_free_sge_resources(struct adapter *adap);
1001 void t4_free_ofld_rxqs(struct adapter *adap, int n, struct sge_ofld_rxq *q);
1002 irq_handler_t t4_intr_handler(struct adapter *adap);
1003 netdev_tx_t t4_eth_xmit(struct sk_buff *skb, struct net_device *dev);
1004 int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp,
1005 const struct pkt_gl *gl);
1006 int t4_mgmt_tx(struct adapter *adap, struct sk_buff *skb);
1007 int t4_ofld_send(struct adapter *adap, struct sk_buff *skb);
1008 int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq,
1009 struct net_device *dev, int intr_idx,
1010 struct sge_fl *fl, rspq_handler_t hnd);
1011 int t4_sge_alloc_eth_txq(struct adapter *adap, struct sge_eth_txq *txq,
1012 struct net_device *dev, struct netdev_queue *netdevq,
1014 int t4_sge_alloc_ctrl_txq(struct adapter *adap, struct sge_ctrl_txq *txq,
1015 struct net_device *dev, unsigned int iqid,
1016 unsigned int cmplqid);
1017 int t4_sge_alloc_ofld_txq(struct adapter *adap, struct sge_ofld_txq *txq,
1018 struct net_device *dev, unsigned int iqid);
1019 irqreturn_t t4_sge_intr_msix(int irq, void *cookie);
1020 int t4_sge_init(struct adapter *adap);
1021 void t4_sge_start(struct adapter *adap);
1022 void t4_sge_stop(struct adapter *adap);
1023 int cxgb_busy_poll(struct napi_struct *napi);
1024 extern int dbfifo_int_thresh;
1026 #define for_each_port(adapter, iter) \
1027 for (iter = 0; iter < (adapter)->params.nports; ++iter)
1029 static inline int is_bypass(struct adapter *adap)
1031 return adap->params.bypass;
1034 static inline int is_bypass_device(int device)
1036 /* this should be set based upon device capabilities */
1046 static inline unsigned int core_ticks_per_usec(const struct adapter *adap)
1048 return adap->params.vpd.cclk / 1000;
1051 static inline unsigned int us_to_core_ticks(const struct adapter *adap,
1054 return (us * adap->params.vpd.cclk) / 1000;
1057 static inline unsigned int core_ticks_to_us(const struct adapter *adapter,
1060 /* add Core Clock / 2 to round ticks to nearest uS */
1061 return ((ticks * 1000 + adapter->params.vpd.cclk/2) /
1062 adapter->params.vpd.cclk);
1065 void t4_set_reg_field(struct adapter *adap, unsigned int addr, u32 mask,
1068 int t4_wr_mbox_meat(struct adapter *adap, int mbox, const void *cmd, int size,
1069 void *rpl, bool sleep_ok);
1071 static inline int t4_wr_mbox(struct adapter *adap, int mbox, const void *cmd,
1072 int size, void *rpl)
1074 return t4_wr_mbox_meat(adap, mbox, cmd, size, rpl, true);
1077 static inline int t4_wr_mbox_ns(struct adapter *adap, int mbox, const void *cmd,
1078 int size, void *rpl)
1080 return t4_wr_mbox_meat(adap, mbox, cmd, size, rpl, false);
1083 void t4_write_indirect(struct adapter *adap, unsigned int addr_reg,
1084 unsigned int data_reg, const u32 *vals,
1085 unsigned int nregs, unsigned int start_idx);
1086 void t4_read_indirect(struct adapter *adap, unsigned int addr_reg,
1087 unsigned int data_reg, u32 *vals, unsigned int nregs,
1088 unsigned int start_idx);
1089 void t4_hw_pci_read_cfg4(struct adapter *adapter, int reg, u32 *val);
1091 struct fw_filter_wr;
1093 void t4_intr_enable(struct adapter *adapter);
1094 void t4_intr_disable(struct adapter *adapter);
1095 int t4_slow_intr_handler(struct adapter *adapter);
1097 int t4_wait_dev_ready(void __iomem *regs);
1098 int t4_link_start(struct adapter *adap, unsigned int mbox, unsigned int port,
1099 struct link_config *lc);
1100 int t4_restart_aneg(struct adapter *adap, unsigned int mbox, unsigned int port);
1102 #define T4_MEMORY_WRITE 0
1103 #define T4_MEMORY_READ 1
1104 int t4_memory_rw(struct adapter *adap, int win, int mtype, u32 addr, u32 len,
1105 __be32 *buf, int dir);
1106 static inline int t4_memory_write(struct adapter *adap, int mtype, u32 addr,
1107 u32 len, __be32 *buf)
1109 return t4_memory_rw(adap, 0, mtype, addr, len, buf, 0);
1112 int t4_seeprom_wp(struct adapter *adapter, bool enable);
1113 int get_vpd_params(struct adapter *adapter, struct vpd_params *p);
1114 int t4_read_flash(struct adapter *adapter, unsigned int addr,
1115 unsigned int nwords, u32 *data, int byte_oriented);
1116 int t4_load_fw(struct adapter *adapter, const u8 *fw_data, unsigned int size);
1117 int t4_fwcache(struct adapter *adap, enum fw_params_param_dev_fwcache op);
1118 int t4_fw_upgrade(struct adapter *adap, unsigned int mbox,
1119 const u8 *fw_data, unsigned int size, int force);
1120 unsigned int t4_flash_cfg_addr(struct adapter *adapter);
1121 int t4_get_fw_version(struct adapter *adapter, u32 *vers);
1122 int t4_get_tp_version(struct adapter *adapter, u32 *vers);
1123 int t4_prep_fw(struct adapter *adap, struct fw_info *fw_info,
1124 const u8 *fw_data, unsigned int fw_size,
1125 struct fw_hdr *card_fw, enum dev_state state, int *reset);
1126 int t4_prep_adapter(struct adapter *adapter);
1128 enum t4_bar2_qtype { T4_BAR2_QTYPE_EGRESS, T4_BAR2_QTYPE_INGRESS };
1129 int cxgb4_t4_bar2_sge_qregs(struct adapter *adapter,
1131 enum t4_bar2_qtype qtype,
1133 unsigned int *pbar2_qid);
1135 unsigned int qtimer_val(const struct adapter *adap,
1136 const struct sge_rspq *q);
1137 int t4_init_sge_params(struct adapter *adapter);
1138 int t4_init_tp_params(struct adapter *adap);
1139 int t4_filter_field_shift(const struct adapter *adap, int filter_sel);
1140 int t4_port_init(struct adapter *adap, int mbox, int pf, int vf);
1141 void t4_fatal_err(struct adapter *adapter);
1142 int t4_config_rss_range(struct adapter *adapter, int mbox, unsigned int viid,
1143 int start, int n, const u16 *rspq, unsigned int nrspq);
1144 int t4_config_glbl_rss(struct adapter *adapter, int mbox, unsigned int mode,
1145 unsigned int flags);
1146 int t4_read_rss(struct adapter *adapter, u16 *entries);
1147 void t4_read_rss_key(struct adapter *adapter, u32 *key);
1148 void t4_write_rss_key(struct adapter *adap, const u32 *key, int idx);
1149 void t4_read_rss_pf_config(struct adapter *adapter, unsigned int index,
1151 void t4_read_rss_vf_config(struct adapter *adapter, unsigned int index,
1152 u32 *vfl, u32 *vfh);
1153 u32 t4_read_rss_pf_map(struct adapter *adapter);
1154 u32 t4_read_rss_pf_mask(struct adapter *adapter);
1156 int t4_mc_read(struct adapter *adap, int idx, u32 addr, __be32 *data,
1158 int t4_edc_read(struct adapter *adap, int idx, u32 addr, __be32 *data,
1160 void t4_pmtx_get_stats(struct adapter *adap, u32 cnt[], u64 cycles[]);
1161 void t4_pmrx_get_stats(struct adapter *adap, u32 cnt[], u64 cycles[]);
1162 int t4_read_cim_ibq(struct adapter *adap, unsigned int qid, u32 *data,
1164 int t4_read_cim_obq(struct adapter *adap, unsigned int qid, u32 *data,
1166 int t4_cim_read(struct adapter *adap, unsigned int addr, unsigned int n,
1167 unsigned int *valp);
1168 int t4_cim_write(struct adapter *adap, unsigned int addr, unsigned int n,
1169 const unsigned int *valp);
1170 int t4_cim_read_la(struct adapter *adap, u32 *la_buf, unsigned int *wrptr);
1171 void t4_read_cimq_cfg(struct adapter *adap, u16 *base, u16 *size, u16 *thres);
1172 const char *t4_get_port_type_description(enum fw_port_type port_type);
1173 void t4_get_port_stats(struct adapter *adap, int idx, struct port_stats *p);
1174 void t4_read_mtu_tbl(struct adapter *adap, u16 *mtus, u8 *mtu_log);
1175 void t4_tp_wr_bits_indirect(struct adapter *adap, unsigned int addr,
1176 unsigned int mask, unsigned int val);
1177 void t4_tp_get_tcp_stats(struct adapter *adap, struct tp_tcp_stats *v4,
1178 struct tp_tcp_stats *v6);
1179 void t4_load_mtus(struct adapter *adap, const unsigned short *mtus,
1180 const unsigned short *alpha, const unsigned short *beta);
1182 void t4_mk_filtdelwr(unsigned int ftid, struct fw_filter_wr *wr, int qid);
1184 void t4_wol_magic_enable(struct adapter *adap, unsigned int port,
1186 int t4_wol_pat_enable(struct adapter *adap, unsigned int port, unsigned int map,
1187 u64 mask0, u64 mask1, unsigned int crc, bool enable);
1189 int t4_fw_hello(struct adapter *adap, unsigned int mbox, unsigned int evt_mbox,
1190 enum dev_master master, enum dev_state *state);
1191 int t4_fw_bye(struct adapter *adap, unsigned int mbox);
1192 int t4_early_init(struct adapter *adap, unsigned int mbox);
1193 int t4_fw_reset(struct adapter *adap, unsigned int mbox, int reset);
1194 int t4_fixup_host_params(struct adapter *adap, unsigned int page_size,
1195 unsigned int cache_line_size);
1196 int t4_fw_initialize(struct adapter *adap, unsigned int mbox);
1197 int t4_query_params(struct adapter *adap, unsigned int mbox, unsigned int pf,
1198 unsigned int vf, unsigned int nparams, const u32 *params,
1200 int t4_set_params(struct adapter *adap, unsigned int mbox, unsigned int pf,
1201 unsigned int vf, unsigned int nparams, const u32 *params,
1203 int t4_set_params_nosleep(struct adapter *adap, unsigned int mbox,
1204 unsigned int pf, unsigned int vf,
1205 unsigned int nparams, const u32 *params,
1207 int t4_cfg_pfvf(struct adapter *adap, unsigned int mbox, unsigned int pf,
1208 unsigned int vf, unsigned int txq, unsigned int txq_eth_ctrl,
1209 unsigned int rxqi, unsigned int rxq, unsigned int tc,
1210 unsigned int vi, unsigned int cmask, unsigned int pmask,
1211 unsigned int nexact, unsigned int rcaps, unsigned int wxcaps);
1212 int t4_alloc_vi(struct adapter *adap, unsigned int mbox, unsigned int port,
1213 unsigned int pf, unsigned int vf, unsigned int nmac, u8 *mac,
1214 unsigned int *rss_size);
1215 int t4_set_rxmode(struct adapter *adap, unsigned int mbox, unsigned int viid,
1216 int mtu, int promisc, int all_multi, int bcast, int vlanex,
1218 int t4_alloc_mac_filt(struct adapter *adap, unsigned int mbox,
1219 unsigned int viid, bool free, unsigned int naddr,
1220 const u8 **addr, u16 *idx, u64 *hash, bool sleep_ok);
1221 int t4_change_mac(struct adapter *adap, unsigned int mbox, unsigned int viid,
1222 int idx, const u8 *addr, bool persist, bool add_smt);
1223 int t4_set_addr_hash(struct adapter *adap, unsigned int mbox, unsigned int viid,
1224 bool ucast, u64 vec, bool sleep_ok);
1225 int t4_enable_vi_params(struct adapter *adap, unsigned int mbox,
1226 unsigned int viid, bool rx_en, bool tx_en, bool dcb_en);
1227 int t4_enable_vi(struct adapter *adap, unsigned int mbox, unsigned int viid,
1228 bool rx_en, bool tx_en);
1229 int t4_identify_port(struct adapter *adap, unsigned int mbox, unsigned int viid,
1230 unsigned int nblinks);
1231 int t4_mdio_rd(struct adapter *adap, unsigned int mbox, unsigned int phy_addr,
1232 unsigned int mmd, unsigned int reg, u16 *valp);
1233 int t4_mdio_wr(struct adapter *adap, unsigned int mbox, unsigned int phy_addr,
1234 unsigned int mmd, unsigned int reg, u16 val);
1235 int t4_iq_free(struct adapter *adap, unsigned int mbox, unsigned int pf,
1236 unsigned int vf, unsigned int iqtype, unsigned int iqid,
1237 unsigned int fl0id, unsigned int fl1id);
1238 int t4_eth_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf,
1239 unsigned int vf, unsigned int eqid);
1240 int t4_ctrl_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf,
1241 unsigned int vf, unsigned int eqid);
1242 int t4_ofld_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf,
1243 unsigned int vf, unsigned int eqid);
1244 int t4_handle_fw_rpl(struct adapter *adap, const __be64 *rpl);
1245 void t4_db_full(struct adapter *adapter);
1246 void t4_db_dropped(struct adapter *adapter);
1247 int t4_fwaddrspace_write(struct adapter *adap, unsigned int mbox,
1249 void t4_sge_decode_idma_state(struct adapter *adapter, int state);
1250 void t4_free_mem(void *addr);
1251 #endif /* __CXGB4_H__ */