1 /* SPDX-License-Identifier: BSD-3-Clause
3 * Copyright (C) 2014 Freescale Semiconductor, Inc.
6 #ifndef _FSL_QBMAN_PORTAL_H
7 #define _FSL_QBMAN_PORTAL_H
9 #include <fsl_qbman_base.h>
12 * DOC - QBMan portal APIs to implement the following functions:
13 * - Initialize and destroy Software portal object.
14 * - Read and write Software portal interrupt registers.
15 * - Enqueue, including setting the enqueue descriptor, and issuing enqueue
17 * - Dequeue, including setting the dequeue descriptor, issuing dequeue command,
18 * parsing the dequeue response in DQRR and memeory, parsing the state change
20 * - Release, including setting the release descriptor, and issuing the buffer
22 * - Acquire, acquire the buffer from the given buffer pool.
24 * - Channel management, enable/disable CDAN with or without context.
28 * qbman_swp_init() - Create a functional object representing the given
29 * QBMan portal descriptor.
30 * @d: the given qbman swp descriptor
32 * Return qbman_swp portal object for success, NULL if the object cannot
35 struct qbman_swp *qbman_swp_init(const struct qbman_swp_desc *d);
38 * qbman_swp_finish() - Create and destroy a functional object representing
39 * the given QBMan portal descriptor.
40 * @p: the qbman_swp object to be destroyed.
43 void qbman_swp_finish(struct qbman_swp *p);
46 * qbman_swp_invalidate() - Invalidate the cache enabled area of the QBMan
47 * portal. This is required to be called if a portal moved to another core
48 * because the QBMan portal area is non coherent
49 * @p: the qbman_swp object to be invalidated
52 void qbman_swp_invalidate(struct qbman_swp *p);
55 * qbman_swp_get_desc() - Get the descriptor of the given portal object.
56 * @p: the given portal object.
58 * Return the descriptor for this portal.
60 const struct qbman_swp_desc *qbman_swp_get_desc(struct qbman_swp *p);
66 /* EQCR ring interrupt */
67 #define QBMAN_SWP_INTERRUPT_EQRI ((uint32_t)0x00000001)
68 /* Enqueue command dispatched interrupt */
69 #define QBMAN_SWP_INTERRUPT_EQDI ((uint32_t)0x00000002)
70 /* DQRR non-empty interrupt */
71 #define QBMAN_SWP_INTERRUPT_DQRI ((uint32_t)0x00000004)
72 /* RCR ring interrupt */
73 #define QBMAN_SWP_INTERRUPT_RCRI ((uint32_t)0x00000008)
74 /* Release command dispatched interrupt */
75 #define QBMAN_SWP_INTERRUPT_RCDI ((uint32_t)0x00000010)
76 /* Volatile dequeue command interrupt */
77 #define QBMAN_SWP_INTERRUPT_VDCI ((uint32_t)0x00000020)
80 * qbman_swp_interrupt_get_vanish() - Get the data in software portal
81 * interrupt status disable register.
82 * @p: the given software portal object.
84 * Return the settings in SWP_ISDR register.
86 uint32_t qbman_swp_interrupt_get_vanish(struct qbman_swp *p);
89 * qbman_swp_interrupt_set_vanish() - Set the data in software portal
90 * interrupt status disable register.
91 * @p: the given software portal object.
92 * @mask: The value to set in SWP_IDSR register.
94 void qbman_swp_interrupt_set_vanish(struct qbman_swp *p, uint32_t mask);
97 * qbman_swp_interrupt_read_status() - Get the data in software portal
98 * interrupt status register.
99 * @p: the given software portal object.
101 * Return the settings in SWP_ISR register.
103 uint32_t qbman_swp_interrupt_read_status(struct qbman_swp *p);
106 * qbman_swp_interrupt_clear_status() - Set the data in software portal
107 * interrupt status register.
108 * @p: the given software portal object.
109 * @mask: The value to set in SWP_ISR register.
111 void qbman_swp_interrupt_clear_status(struct qbman_swp *p, uint32_t mask);
114 * qbman_swp_dqrr_thrshld_read_status() - Get the data in software portal
115 * DQRR interrupt threshold register.
116 * @p: the given software portal object.
118 uint32_t qbman_swp_dqrr_thrshld_read_status(struct qbman_swp *p);
121 * qbman_swp_dqrr_thrshld_write() - Set the data in software portal
122 * DQRR interrupt threshold register.
123 * @p: the given software portal object.
124 * @mask: The value to set in SWP_DQRR_ITR register.
126 void qbman_swp_dqrr_thrshld_write(struct qbman_swp *p, uint32_t mask);
129 * qbman_swp_intr_timeout_read_status() - Get the data in software portal
130 * Interrupt Time-Out period register.
131 * @p: the given software portal object.
133 uint32_t qbman_swp_intr_timeout_read_status(struct qbman_swp *p);
136 * qbman_swp_intr_timeout_write() - Set the data in software portal
137 * Interrupt Time-Out period register.
138 * @p: the given software portal object.
139 * @mask: The value to set in SWP_ITPR register.
141 void qbman_swp_intr_timeout_write(struct qbman_swp *p, uint32_t mask);
144 * qbman_swp_interrupt_get_trigger() - Get the data in software portal
145 * interrupt enable register.
146 * @p: the given software portal object.
148 * Return the settings in SWP_IER register.
150 uint32_t qbman_swp_interrupt_get_trigger(struct qbman_swp *p);
153 * qbman_swp_interrupt_set_trigger() - Set the data in software portal
154 * interrupt enable register.
155 * @p: the given software portal object.
156 * @mask: The value to set in SWP_IER register.
158 void qbman_swp_interrupt_set_trigger(struct qbman_swp *p, uint32_t mask);
161 * qbman_swp_interrupt_get_inhibit() - Get the data in software portal
162 * interrupt inhibit register.
163 * @p: the given software portal object.
165 * Return the settings in SWP_IIR register.
167 int qbman_swp_interrupt_get_inhibit(struct qbman_swp *p);
170 * qbman_swp_interrupt_set_inhibit() - Set the data in software portal
171 * interrupt inhibit register.
172 * @p: the given software portal object.
173 * @mask: The value to set in SWP_IIR register.
175 void qbman_swp_interrupt_set_inhibit(struct qbman_swp *p, int inhibit);
182 * struct qbman_result - structure for qbman dequeue response and/or
184 * @dont_manipulate_directly: the 16 32bit data to represent the whole
185 * possible qbman dequeue result.
187 struct qbman_result {
191 uint8_t reserved[63];
236 *A DQRI interrupt can be generated when there are dequeue results on the
237 * portal's DQRR (this mechanism does not deal with "pull" dequeues to
238 * user-supplied 'storage' addresses). There are two parameters to this
239 * interrupt source, one is a threshold and the other is a timeout. The
240 * interrupt will fire if either the fill-level of the ring exceeds 'thresh', or
241 * if the ring has been non-empty for been longer than 'timeout' nanoseconds.
242 * For timeout, an approximation to the desired nanosecond-granularity value is
243 * made, so there are get and set APIs to allow the user to see what actual
244 * timeout is set (compared to the timeout that was requested).
246 int qbman_swp_dequeue_thresh(struct qbman_swp *s, unsigned int thresh);
247 int qbman_swp_dequeue_set_timeout(struct qbman_swp *s, unsigned int timeout);
248 int qbman_swp_dequeue_get_timeout(struct qbman_swp *s, unsigned int *timeout);
250 /* ------------------- */
251 /* Push-mode dequeuing */
252 /* ------------------- */
254 /* The user of a portal can enable and disable push-mode dequeuing of up to 16
255 * channels independently. It does not specify this toggling by channel IDs, but
256 * rather by specifying the index (from 0 to 15) that has been mapped to the
261 * qbman_swp_push_get() - Get the push dequeue setup.
262 * @s: the software portal object.
263 * @channel_idx: the channel index to query.
264 * @enabled: returned boolean to show whether the push dequeue is enabled for
267 void qbman_swp_push_get(struct qbman_swp *s, uint8_t channel_idx, int *enabled);
270 * qbman_swp_push_set() - Enable or disable push dequeue.
271 * @s: the software portal object.
272 * @channel_idx: the channel index..
273 * @enable: enable or disable push dequeue.
275 * The user of a portal can enable and disable push-mode dequeuing of up to 16
276 * channels independently. It does not specify this toggling by channel IDs, but
277 * rather by specifying the index (from 0 to 15) that has been mapped to the
280 void qbman_swp_push_set(struct qbman_swp *s, uint8_t channel_idx, int enable);
282 /* ------------------- */
283 /* Pull-mode dequeuing */
284 /* ------------------- */
287 * struct qbman_pull_desc - the structure for pull dequeue descriptor
289 struct qbman_pull_desc {
291 uint32_t dont_manipulate_directly[16];
299 uint64_t rsp_addr_virt;
305 enum qbman_pull_type_e {
306 /* dequeue with priority precedence, respect intra-class scheduling */
307 qbman_pull_type_prio = 1,
308 /* dequeue with active FQ precedence, respect ICS */
309 qbman_pull_type_active,
310 /* dequeue with active FQ precedence, no ICS */
311 qbman_pull_type_active_noics
315 * qbman_pull_desc_clear() - Clear the contents of a descriptor to
316 * default/starting state.
317 * @d: the pull dequeue descriptor to be cleared.
319 void qbman_pull_desc_clear(struct qbman_pull_desc *d);
322 * qbman_pull_desc_set_storage()- Set the pull dequeue storage
323 * @d: the pull dequeue descriptor to be set.
324 * @storage: the pointer of the memory to store the dequeue result.
325 * @storage_phys: the physical address of the storage memory.
326 * @stash: to indicate whether write allocate is enabled.
328 * If not called, or if called with 'storage' as NULL, the result pull dequeues
329 * will produce results to DQRR. If 'storage' is non-NULL, then results are
330 * produced to the given memory location (using the physical/DMA address which
331 * the caller provides in 'storage_phys'), and 'stash' controls whether or not
332 * those writes to main-memory express a cache-warming attribute.
334 void qbman_pull_desc_set_storage(struct qbman_pull_desc *d,
335 struct qbman_result *storage,
336 uint64_t storage_phys,
339 * qbman_pull_desc_set_numframes() - Set the number of frames to be dequeued.
340 * @d: the pull dequeue descriptor to be set.
341 * @numframes: number of frames to be set, must be between 1 and 16, inclusive.
343 void qbman_pull_desc_set_numframes(struct qbman_pull_desc *d,
346 * qbman_pull_desc_set_token() - Set dequeue token for pull command
347 * @d: the dequeue descriptor
348 * @token: the token to be set
350 * token is the value that shows up in the dequeue response that can be used to
351 * detect when the results have been published. The easiest technique is to zero
352 * result "storage" before issuing a dequeue, and use any non-zero 'token' value
354 void qbman_pull_desc_set_token(struct qbman_pull_desc *d, uint8_t token);
356 /* Exactly one of the following descriptor "actions" should be set. (Calling any
357 * one of these will replace the effect of any prior call to one of these.)
358 * - pull dequeue from the given frame queue (FQ)
359 * - pull dequeue from any FQ in the given work queue (WQ)
360 * - pull dequeue from any FQ in any WQ in the given channel
363 * qbman_pull_desc_set_fq() - Set fqid from which the dequeue command dequeues.
364 * @fqid: the frame queue index of the given FQ.
366 void qbman_pull_desc_set_fq(struct qbman_pull_desc *d, uint32_t fqid);
369 * qbman_pull_desc_set_wq() - Set wqid from which the dequeue command dequeues.
370 * @wqid: composed of channel id and wqid within the channel.
371 * @dct: the dequeue command type.
373 void qbman_pull_desc_set_wq(struct qbman_pull_desc *d, uint32_t wqid,
374 enum qbman_pull_type_e dct);
376 /* qbman_pull_desc_set_channel() - Set channelid from which the dequeue command
378 * @chid: the channel id to be dequeued.
379 * @dct: the dequeue command type.
381 void qbman_pull_desc_set_channel(struct qbman_pull_desc *d, uint32_t chid,
382 enum qbman_pull_type_e dct);
385 * qbman_pull_desc_set_rad() - Decide whether reschedule the fq after dequeue
387 * @rad: 1 = Reschedule the FQ after dequeue.
388 * 0 = Allow the FQ to remain active after dequeue.
390 void qbman_pull_desc_set_rad(struct qbman_pull_desc *d, int rad);
393 * qbman_swp_pull() - Issue the pull dequeue command
394 * @s: the software portal object.
395 * @d: the software portal descriptor which has been configured with
396 * the set of qbman_pull_desc_set_*() calls.
398 * Return 0 for success, and -EBUSY if the software portal is not ready
399 * to do pull dequeue.
401 int qbman_swp_pull(struct qbman_swp *s, struct qbman_pull_desc *d);
403 /* -------------------------------- */
404 /* Polling DQRR for dequeue results */
405 /* -------------------------------- */
408 * qbman_swp_dqrr_next() - Get an valid DQRR entry.
409 * @s: the software portal object.
411 * Return NULL if there are no unconsumed DQRR entries. Return a DQRR entry
412 * only once, so repeated calls can return a sequence of DQRR entries, without
413 * requiring they be consumed immediately or in any particular order.
415 const struct qbman_result *qbman_swp_dqrr_next(struct qbman_swp *p);
418 * qbman_swp_prefetch_dqrr_next() - prefetch the next DQRR entry.
419 * @s: the software portal object.
421 void qbman_swp_prefetch_dqrr_next(struct qbman_swp *s);
424 * qbman_swp_dqrr_consume() - Consume DQRR entries previously returned from
425 * qbman_swp_dqrr_next().
426 * @s: the software portal object.
427 * @dq: the DQRR entry to be consumed.
429 void qbman_swp_dqrr_consume(struct qbman_swp *s, const struct qbman_result *dq);
432 * qbman_swp_dqrr_idx_consume() - Given the DQRR index consume the DQRR entry
433 * @s: the software portal object.
434 * @dqrr_index: the DQRR index entry to be consumed.
436 void qbman_swp_dqrr_idx_consume(struct qbman_swp *s, uint8_t dqrr_index);
439 * qbman_get_dqrr_idx() - Get dqrr index from the given dqrr
440 * @dqrr: the given dqrr object.
444 uint8_t qbman_get_dqrr_idx(const struct qbman_result *dqrr);
447 * qbman_get_dqrr_from_idx() - Use index to get the dqrr entry from the
449 * @s: the given portal.
450 * @idx: the dqrr index.
452 * Return dqrr entry object.
454 struct qbman_result *qbman_get_dqrr_from_idx(struct qbman_swp *s, uint8_t idx);
456 /* ------------------------------------------------- */
457 /* Polling user-provided storage for dequeue results */
458 /* ------------------------------------------------- */
461 * qbman_result_has_new_result() - Check and get the dequeue response from the
462 * dq storage memory set in pull dequeue command
463 * @s: the software portal object.
464 * @dq: the dequeue result read from the memory.
466 * Only used for user-provided storage of dequeue results, not DQRR. For
467 * efficiency purposes, the driver will perform any required endianness
468 * conversion to ensure that the user's dequeue result storage is in host-endian
469 * format (whether or not that is the same as the little-endian format that
470 * hardware DMA'd to the user's storage). As such, once the user has called
471 * qbman_result_has_new_result() and been returned a valid dequeue result,
472 * they should not call it again on the same memory location (except of course
473 * if another dequeue command has been executed to produce a new result to that
476 * Return 1 for getting a valid dequeue result, or 0 for not getting a valid
479 int qbman_result_has_new_result(struct qbman_swp *s,
480 struct qbman_result *dq);
483 * qbman_check_command_complete() - Check if the previous issued dq commnd
484 * is completed and results are available in memory.
485 * @s: the software portal object.
486 * @dq: the dequeue result read from the memory.
488 * Return 1 for getting a valid dequeue result, or 0 for not getting a valid
491 int qbman_check_command_complete(struct qbman_result *dq);
493 int qbman_check_new_result(struct qbman_result *dq);
495 /* -------------------------------------------------------- */
496 /* Parsing dequeue entries (DQRR and user-provided storage) */
497 /* -------------------------------------------------------- */
500 * qbman_result_is_DQ() - check the dequeue result is a dequeue response or not
501 * @dq: the dequeue result to be checked.
503 * DQRR entries may contain non-dequeue results, ie. notifications
505 int qbman_result_is_DQ(const struct qbman_result *dq);
508 * qbman_result_is_SCN() - Check the dequeue result is notification or not
509 * @dq: the dequeue result to be checked.
511 * All the non-dequeue results (FQDAN/CDAN/CSCN/...) are "state change
512 * notifications" of one type or another. Some APIs apply to all of them, of the
513 * form qbman_result_SCN_***().
515 static inline int qbman_result_is_SCN(const struct qbman_result *dq)
517 return !qbman_result_is_DQ(dq);
520 /* Recognise different notification types, only required if the user allows for
521 * these to occur, and cares about them when they do.
525 * qbman_result_is_FQDAN() - Check for FQ Data Availability
526 * @dq: the qbman_result object.
528 * Return 1 if this is FQDAN.
530 int qbman_result_is_FQDAN(const struct qbman_result *dq);
533 * qbman_result_is_CDAN() - Check for Channel Data Availability
534 * @dq: the qbman_result object to check.
536 * Return 1 if this is CDAN.
538 int qbman_result_is_CDAN(const struct qbman_result *dq);
541 * qbman_result_is_CSCN() - Check for Congestion State Change
542 * @dq: the qbman_result object to check.
544 * Return 1 if this is CSCN.
546 int qbman_result_is_CSCN(const struct qbman_result *dq);
549 * qbman_result_is_BPSCN() - Check for Buffer Pool State Change.
550 * @dq: the qbman_result object to check.
552 * Return 1 if this is BPSCN.
554 int qbman_result_is_BPSCN(const struct qbman_result *dq);
557 * qbman_result_is_CGCU() - Check for Congestion Group Count Update.
558 * @dq: the qbman_result object to check.
560 * Return 1 if this is CGCU.
562 int qbman_result_is_CGCU(const struct qbman_result *dq);
564 /* Frame queue state change notifications; (FQDAN in theory counts too as it
565 * leaves a FQ parked, but it is primarily a data availability notification)
569 * qbman_result_is_FQRN() - Check for FQ Retirement Notification.
570 * @dq: the qbman_result object to check.
572 * Return 1 if this is FQRN.
574 int qbman_result_is_FQRN(const struct qbman_result *dq);
577 * qbman_result_is_FQRNI() - Check for FQ Retirement Immediate
578 * @dq: the qbman_result object to check.
580 * Return 1 if this is FQRNI.
582 int qbman_result_is_FQRNI(const struct qbman_result *dq);
585 * qbman_result_is_FQPN() - Check for FQ Park Notification
586 * @dq: the qbman_result object to check.
588 * Return 1 if this is FQPN.
590 int qbman_result_is_FQPN(const struct qbman_result *dq);
592 /* Parsing frame dequeue results (qbman_result_is_DQ() must be TRUE)
595 #define QBMAN_DQ_STAT_FQEMPTY 0x80
597 #define QBMAN_DQ_STAT_HELDACTIVE 0x40
598 /* FQ force eligible */
599 #define QBMAN_DQ_STAT_FORCEELIGIBLE 0x20
601 #define QBMAN_DQ_STAT_VALIDFRAME 0x10
603 #define QBMAN_DQ_STAT_ODPVALID 0x04
604 /* Volatile dequeue */
605 #define QBMAN_DQ_STAT_VOLATILE 0x02
606 /* volatile dequeue command is expired */
607 #define QBMAN_DQ_STAT_EXPIRED 0x01
609 #define QBMAN_EQCR_DCA_IDXMASK 0x0f
610 #define QBMAN_ENQUEUE_FLAG_DCA (1ULL << 31)
613 * qbman_result_DQ_flags() - Get the STAT field of dequeue response
614 * @dq: the dequeue result.
616 * Return the state field.
618 uint8_t qbman_result_DQ_flags(const struct qbman_result *dq);
621 * qbman_result_DQ_is_pull() - Check whether the dq response is from a pull
623 * @dq: the dequeue result.
625 * Return 1 for volatile(pull) dequeue, 0 for static dequeue.
627 static inline int qbman_result_DQ_is_pull(const struct qbman_result *dq)
629 return (int)(qbman_result_DQ_flags(dq) & QBMAN_DQ_STAT_VOLATILE);
633 * qbman_result_DQ_is_pull_complete() - Check whether the pull command is
635 * @dq: the dequeue result.
639 static inline int qbman_result_DQ_is_pull_complete(
640 const struct qbman_result *dq)
642 return (int)(qbman_result_DQ_flags(dq) & QBMAN_DQ_STAT_EXPIRED);
646 * qbman_result_DQ_seqnum() - Get the seqnum field in dequeue response
647 * seqnum is valid only if VALIDFRAME flag is TRUE
648 * @dq: the dequeue result.
652 uint16_t qbman_result_DQ_seqnum(const struct qbman_result *dq);
655 * qbman_result_DQ_odpid() - Get the seqnum field in dequeue response
656 * odpid is valid only if ODPVAILD flag is TRUE.
657 * @dq: the dequeue result.
661 uint16_t qbman_result_DQ_odpid(const struct qbman_result *dq);
664 * qbman_result_DQ_fqid() - Get the fqid in dequeue response
665 * @dq: the dequeue result.
669 uint32_t qbman_result_DQ_fqid(const struct qbman_result *dq);
672 * qbman_result_DQ_byte_count() - Get the byte count in dequeue response
673 * @dq: the dequeue result.
675 * Return the byte count remaining in the FQ.
677 uint32_t qbman_result_DQ_byte_count(const struct qbman_result *dq);
680 * qbman_result_DQ_frame_count - Get the frame count in dequeue response
681 * @dq: the dequeue result.
683 * Return the frame count remaining in the FQ.
685 uint32_t qbman_result_DQ_frame_count(const struct qbman_result *dq);
688 * qbman_result_DQ_fqd_ctx() - Get the frame queue context in dequeue response
689 * @dq: the dequeue result.
691 * Return the frame queue context.
693 uint64_t qbman_result_DQ_fqd_ctx(const struct qbman_result *dq);
696 * qbman_result_DQ_fd() - Get the frame descriptor in dequeue response
697 * @dq: the dequeue result.
699 * Return the frame descriptor.
701 const struct qbman_fd *qbman_result_DQ_fd(const struct qbman_result *dq);
703 /* State-change notifications (FQDAN/CDAN/CSCN/...). */
706 * qbman_result_SCN_state() - Get the state field in State-change notification
707 * @scn: the state change notification.
709 * Return the state in the notifiation.
711 uint8_t qbman_result_SCN_state(const struct qbman_result *scn);
714 * qbman_result_SCN_rid() - Get the resource id from the notification
715 * @scn: the state change notification.
717 * Return the resource id.
719 uint32_t qbman_result_SCN_rid(const struct qbman_result *scn);
722 * qbman_result_SCN_ctx() - get the context from the notification
723 * @scn: the state change notification.
725 * Return the context.
727 uint64_t qbman_result_SCN_ctx(const struct qbman_result *scn);
729 /* Type-specific "resource IDs". Mainly for illustration purposes, though it
730 * also gives the appropriate type widths.
732 /* Get the FQID from the FQDAN */
733 #define qbman_result_FQDAN_fqid(dq) qbman_result_SCN_rid(dq)
734 /* Get the FQID from the FQRN */
735 #define qbman_result_FQRN_fqid(dq) qbman_result_SCN_rid(dq)
736 /* Get the FQID from the FQRNI */
737 #define qbman_result_FQRNI_fqid(dq) qbman_result_SCN_rid(dq)
738 /* Get the FQID from the FQPN */
739 #define qbman_result_FQPN_fqid(dq) qbman_result_SCN_rid(dq)
740 /* Get the channel ID from the CDAN */
741 #define qbman_result_CDAN_cid(dq) ((uint16_t)qbman_result_SCN_rid(dq))
742 /* Get the CGID from the CSCN */
743 #define qbman_result_CSCN_cgid(dq) ((uint16_t)qbman_result_SCN_rid(dq))
746 * qbman_result_bpscn_bpid() - Get the bpid from BPSCN
747 * @scn: the state change notification.
749 * Return the buffer pool id.
751 uint16_t qbman_result_bpscn_bpid(const struct qbman_result *scn);
754 * qbman_result_bpscn_has_free_bufs() - Check whether there are free
755 * buffers in the pool from BPSCN.
756 * @scn: the state change notification.
758 * Return the number of free buffers.
760 int qbman_result_bpscn_has_free_bufs(const struct qbman_result *scn);
763 * qbman_result_bpscn_is_depleted() - Check BPSCN to see whether the
764 * buffer pool is depleted.
765 * @scn: the state change notification.
767 * Return the status of buffer pool depletion.
769 int qbman_result_bpscn_is_depleted(const struct qbman_result *scn);
772 * qbman_result_bpscn_is_surplus() - Check BPSCN to see whether the buffer
773 * pool is surplus or not.
774 * @scn: the state change notification.
776 * Return the status of buffer pool surplus.
778 int qbman_result_bpscn_is_surplus(const struct qbman_result *scn);
781 * qbman_result_bpscn_ctx() - Get the BPSCN CTX from BPSCN message
782 * @scn: the state change notification.
784 * Return the BPSCN context.
786 uint64_t qbman_result_bpscn_ctx(const struct qbman_result *scn);
790 * qbman_result_cgcu_cgid() - Check CGCU resouce id, i.e. cgid
791 * @scn: the state change notification.
793 * Return the CGCU resource id.
795 uint16_t qbman_result_cgcu_cgid(const struct qbman_result *scn);
798 * qbman_result_cgcu_icnt() - Get the I_CNT from CGCU
799 * @scn: the state change notification.
801 * Return instantaneous count in the CGCU notification.
803 uint64_t qbman_result_cgcu_icnt(const struct qbman_result *scn);
808 /* struct qbman_eq_desc - structure of enqueue descriptor */
809 struct qbman_eq_desc {
811 uint32_t dont_manipulate_directly[8];
831 * struct qbman_eq_response - structure of enqueue response
832 * @dont_manipulate_directly: the 16 32bit data to represent the whole
835 struct qbman_eq_response {
836 uint32_t dont_manipulate_directly[16];
840 * qbman_eq_desc_clear() - Clear the contents of a descriptor to
841 * default/starting state.
842 * @d: the given enqueue descriptor.
844 void qbman_eq_desc_clear(struct qbman_eq_desc *d);
846 /* Exactly one of the following descriptor "actions" should be set. (Calling
847 * any one of these will replace the effect of any prior call to one of these.)
848 * - enqueue without order-restoration
849 * - enqueue with order-restoration
850 * - fill a hole in the order-restoration sequence, without any enqueue
851 * - advance NESN (Next Expected Sequence Number), without any enqueue
852 * 'respond_success' indicates whether an enqueue response should be DMA'd
853 * after success (otherwise a response is DMA'd only after failure).
854 * 'incomplete' indicates that other fragments of the same 'seqnum' are yet to
859 * qbman_eq_desc_set_no_orp() - Set enqueue descriptor without orp
860 * @d: the enqueue descriptor.
861 * @response_success: 1 = enqueue with response always; 0 = enqueue with
862 * rejections returned on a FQ.
864 void qbman_eq_desc_set_no_orp(struct qbman_eq_desc *d, int respond_success);
866 * qbman_eq_desc_set_orp() - Set order-resotration in the enqueue descriptor
867 * @d: the enqueue descriptor.
868 * @response_success: 1 = enqueue with response always; 0 = enqueue with
869 * rejections returned on a FQ.
870 * @opr_id: the order point record id.
871 * @seqnum: the order restoration sequence number.
872 * @incomplete: indiates whether this is the last fragments using the same
875 void qbman_eq_desc_set_orp(struct qbman_eq_desc *d, int respond_success,
876 uint16_t opr_id, uint16_t seqnum, int incomplete);
879 * qbman_eq_desc_set_orp_hole() - fill a hole in the order-restoration sequence
880 * without any enqueue
881 * @d: the enqueue descriptor.
882 * @opr_id: the order point record id.
883 * @seqnum: the order restoration sequence number.
885 void qbman_eq_desc_set_orp_hole(struct qbman_eq_desc *d, uint16_t opr_id,
889 * qbman_eq_desc_set_orp_nesn() - advance NESN (Next Expected Sequence Number)
890 * without any enqueue
891 * @d: the enqueue descriptor.
892 * @opr_id: the order point record id.
893 * @seqnum: the order restoration sequence number.
895 void qbman_eq_desc_set_orp_nesn(struct qbman_eq_desc *d, uint16_t opr_id,
898 * qbman_eq_desc_set_response() - Set the enqueue response info.
899 * @d: the enqueue descriptor
900 * @storage_phys: the physical address of the enqueue response in memory.
901 * @stash: indicate that the write allocation enabled or not.
903 * In the case where an enqueue response is DMA'd, this determines where that
904 * response should go. (The physical/DMA address is given for hardware's
905 * benefit, but software should interpret it as a "struct qbman_eq_response"
906 * data structure.) 'stash' controls whether or not the write to main-memory
907 * expresses a cache-warming attribute.
909 void qbman_eq_desc_set_response(struct qbman_eq_desc *d,
910 uint64_t storage_phys,
914 * qbman_eq_desc_set_token() - Set token for the enqueue command
915 * @d: the enqueue descriptor
916 * @token: the token to be set.
918 * token is the value that shows up in an enqueue response that can be used to
919 * detect when the results have been published. The easiest technique is to zero
920 * result "storage" before issuing an enqueue, and use any non-zero 'token'
923 void qbman_eq_desc_set_token(struct qbman_eq_desc *d, uint8_t token);
926 * Exactly one of the following descriptor "targets" should be set. (Calling any
927 * one of these will replace the effect of any prior call to one of these.)
928 * - enqueue to a frame queue
929 * - enqueue to a queuing destination
930 * Note, that none of these will have any affect if the "action" type has been
931 * set to "orp_hole" or "orp_nesn".
934 * qbman_eq_desc_set_fq() - Set Frame Queue id for the enqueue command
935 * @d: the enqueue descriptor
936 * @fqid: the id of the frame queue to be enqueued.
938 void qbman_eq_desc_set_fq(struct qbman_eq_desc *d, uint32_t fqid);
941 * qbman_eq_desc_set_qd() - Set Queuing Destination for the enqueue command.
942 * @d: the enqueue descriptor
943 * @qdid: the id of the queuing destination to be enqueued.
944 * @qd_bin: the queuing destination bin
945 * @qd_prio: the queuing destination priority.
947 void qbman_eq_desc_set_qd(struct qbman_eq_desc *d, uint32_t qdid,
948 uint16_t qd_bin, uint8_t qd_prio);
951 * qbman_eq_desc_set_eqdi() - enable/disable EQDI interrupt
952 * @d: the enqueue descriptor
953 * @enable: boolean to enable/disable EQDI
955 * Determines whether or not the portal's EQDI interrupt source should be
956 * asserted after the enqueue command is completed.
958 void qbman_eq_desc_set_eqdi(struct qbman_eq_desc *d, int enable);
961 * qbman_eq_desc_set_dca() - Set DCA mode in the enqueue command.
962 * @d: the enqueue descriptor.
963 * @enable: enabled/disable DCA mode.
964 * @dqrr_idx: DCAP_CI, the DCAP consumer index.
965 * @park: determine the whether park the FQ or not
967 * Determines whether or not a portal DQRR entry should be consumed once the
968 * enqueue command is completed. (And if so, and the DQRR entry corresponds to a
969 * held-active (order-preserving) FQ, whether the FQ should be parked instead of
970 * being rescheduled.)
972 void qbman_eq_desc_set_dca(struct qbman_eq_desc *d, int enable,
973 uint8_t dqrr_idx, int park);
976 * qbman_result_eqresp_fd() - Get fd from enqueue response.
977 * @eqresp: enqueue response.
979 * Return the fd pointer.
981 struct qbman_fd *qbman_result_eqresp_fd(struct qbman_result *eqresp);
984 * qbman_result_eqresp_set_rspid() - Set the response id in enqueue response.
985 * @eqresp: enqueue response.
986 * @val: values to set into the response id.
988 * This value is set into the response id before the enqueue command, which,
989 * get overwritten by qbman once the enqueue command is complete.
991 void qbman_result_eqresp_set_rspid(struct qbman_result *eqresp, uint8_t val);
994 * qbman_result_eqresp_rspid() - Get the response id.
995 * @eqresp: enqueue response.
997 * Return the response id.
999 * At the time of enqueue user provides the response id. Response id gets
1000 * copied into the enqueue response to determine if the command has been
1001 * completed, and response has been updated.
1003 uint8_t qbman_result_eqresp_rspid(struct qbman_result *eqresp);
1006 * qbman_result_eqresp_rc() - determines if enqueue command is sucessful.
1007 * @eqresp: enqueue response.
1009 * Return 0 when command is sucessful.
1011 uint8_t qbman_result_eqresp_rc(struct qbman_result *eqresp);
1014 * qbman_swp_enqueue() - Issue an enqueue command.
1015 * @s: the software portal used for enqueue.
1016 * @d: the enqueue descriptor.
1017 * @fd: the frame descriptor to be enqueued.
1019 * Please note that 'fd' should only be NULL if the "action" of the
1020 * descriptor is "orp_hole" or "orp_nesn".
1022 * Return 0 for a successful enqueue, -EBUSY if the EQCR is not ready.
1024 int qbman_swp_enqueue(struct qbman_swp *s, const struct qbman_eq_desc *d,
1025 const struct qbman_fd *fd);
1027 * qbman_swp_enqueue_multiple() - Enqueue multiple frames with same
1029 * @s: the software portal used for enqueue.
1030 * @d: the enqueue descriptor.
1031 * @fd: the frame descriptor to be enqueued.
1032 * @flags: bit-mask of QBMAN_ENQUEUE_FLAG_*** options
1033 * @num_frames: the number of the frames to be enqueued.
1035 * Return the number of enqueued frames, -EBUSY if the EQCR is not ready.
1037 int qbman_swp_enqueue_multiple(struct qbman_swp *s,
1038 const struct qbman_eq_desc *d,
1039 const struct qbman_fd *fd,
1043 * qbman_swp_enqueue_multiple_desc() - Enqueue multiple frames with
1044 * individual eq descriptor.
1045 * @s: the software portal used for enqueue.
1046 * @d: the enqueue descriptor.
1047 * @fd: the frame descriptor to be enqueued.
1048 * @num_frames: the number of the frames to be enqueued.
1050 * Return the number of enqueued frames, -EBUSY if the EQCR is not ready.
1052 int qbman_swp_enqueue_multiple_desc(struct qbman_swp *s,
1053 const struct qbman_eq_desc *d,
1054 const struct qbman_fd *fd,
1058 * qbman_swp_enqueue_thresh() - Set threshold for EQRI interrupt.
1059 * @s: the software portal.
1060 * @thresh: the threshold to trigger the EQRI interrupt.
1062 * An EQRI interrupt can be generated when the fill-level of EQCR falls below
1063 * the 'thresh' value set here. Setting thresh==0 (the default) disables.
1065 int qbman_swp_enqueue_thresh(struct qbman_swp *s, unsigned int thresh);
1067 /*******************/
1068 /* Buffer releases */
1069 /*******************/
1071 * struct qbman_release_desc - The structure for buffer release descriptor
1072 * @dont_manipulate_directly: the 32bit data to represent the whole
1073 * possible settings of qbman release descriptor.
1075 struct qbman_release_desc {
1077 uint32_t dont_manipulate_directly[16];
1089 * qbman_release_desc_clear() - Clear the contents of a descriptor to
1090 * default/starting state.
1091 * @d: the qbman release descriptor.
1093 void qbman_release_desc_clear(struct qbman_release_desc *d);
1096 * qbman_release_desc_set_bpid() - Set the ID of the buffer pool to release to
1097 * @d: the qbman release descriptor.
1099 void qbman_release_desc_set_bpid(struct qbman_release_desc *d, uint16_t bpid);
1102 * qbman_release_desc_set_rcdi() - Determines whether or not the portal's RCDI
1103 * interrupt source should be asserted after the release command is completed.
1104 * @d: the qbman release descriptor.
1106 void qbman_release_desc_set_rcdi(struct qbman_release_desc *d, int enable);
1109 * qbman_swp_release() - Issue a buffer release command.
1110 * @s: the software portal object.
1111 * @d: the release descriptor.
1112 * @buffers: a pointer pointing to the buffer address to be released.
1113 * @num_buffers: number of buffers to be released, must be less than 8.
1115 * Return 0 for success, -EBUSY if the release command ring is not ready.
1117 int qbman_swp_release(struct qbman_swp *s, const struct qbman_release_desc *d,
1118 const uint64_t *buffers, unsigned int num_buffers);
1121 * qbman_swp_release_thresh() - Set threshold for RCRI interrupt
1122 * @s: the software portal.
1123 * @thresh: the threshold.
1124 * An RCRI interrupt can be generated when the fill-level of RCR falls below
1125 * the 'thresh' value set here. Setting thresh==0 (the default) disables.
1127 int qbman_swp_release_thresh(struct qbman_swp *s, unsigned int thresh);
1129 /*******************/
1130 /* Buffer acquires */
1131 /*******************/
1133 * qbman_swp_acquire() - Issue a buffer acquire command.
1134 * @s: the software portal object.
1135 * @bpid: the buffer pool index.
1136 * @buffers: a pointer pointing to the acquired buffer address|es.
1137 * @num_buffers: number of buffers to be acquired, must be less than 8.
1139 * Return 0 for success, or negative error code if the acquire command
1142 int qbman_swp_acquire(struct qbman_swp *s, uint16_t bpid, uint64_t *buffers,
1143 unsigned int num_buffers);
1149 * qbman_swp_fq_schedule() - Move the fq to the scheduled state.
1150 * @s: the software portal object.
1151 * @fqid: the index of frame queue to be scheduled.
1153 * There are a couple of different ways that a FQ can end up parked state,
1154 * This schedules it.
1156 * Return 0 for success, or negative error code for failure.
1158 int qbman_swp_fq_schedule(struct qbman_swp *s, uint32_t fqid);
1161 * qbman_swp_fq_force() - Force the FQ to fully scheduled state.
1162 * @s: the software portal object.
1163 * @fqid: the index of frame queue to be forced.
1165 * Force eligible will force a tentatively-scheduled FQ to be fully-scheduled
1166 * and thus be available for selection by any channel-dequeuing behaviour (push
1167 * or pull). If the FQ is subsequently "dequeued" from the channel and is still
1168 * empty at the time this happens, the resulting dq_entry will have no FD.
1169 * (qbman_result_DQ_fd() will return NULL.)
1171 * Return 0 for success, or negative error code for failure.
1173 int qbman_swp_fq_force(struct qbman_swp *s, uint32_t fqid);
1176 * These functions change the FQ flow-control stuff between XON/XOFF. (The
1177 * default is XON.) This setting doesn't affect enqueues to the FQ, just
1178 * dequeues. XOFF FQs will remain in the tenatively-scheduled state, even when
1179 * non-empty, meaning they won't be selected for scheduled dequeuing. If a FQ is
1180 * changed to XOFF after it had already become truly-scheduled to a channel, and
1181 * a pull dequeue of that channel occurs that selects that FQ for dequeuing,
1182 * then the resulting dq_entry will have no FD. (qbman_result_DQ_fd() will
1186 * qbman_swp_fq_xon() - XON the frame queue.
1187 * @s: the software portal object.
1188 * @fqid: the index of frame queue.
1190 * Return 0 for success, or negative error code for failure.
1192 int qbman_swp_fq_xon(struct qbman_swp *s, uint32_t fqid);
1194 * qbman_swp_fq_xoff() - XOFF the frame queue.
1195 * @s: the software portal object.
1196 * @fqid: the index of frame queue.
1198 * Return 0 for success, or negative error code for failure.
1200 int qbman_swp_fq_xoff(struct qbman_swp *s, uint32_t fqid);
1202 /**********************/
1203 /* Channel management */
1204 /**********************/
1207 * If the user has been allocated a channel object that is going to generate
1208 * CDANs to another channel, then these functions will be necessary.
1209 * CDAN-enabled channels only generate a single CDAN notification, after which
1210 * it they need to be reenabled before they'll generate another. (The idea is
1211 * that pull dequeuing will occur in reaction to the CDAN, followed by a
1212 * reenable step.) Each function generates a distinct command to hardware, so a
1213 * combination function is provided if the user wishes to modify the "context"
1214 * (which shows up in each CDAN message) each time they reenable, as a single
1215 * command to hardware.
1219 * qbman_swp_CDAN_set_context() - Set CDAN context
1220 * @s: the software portal object.
1221 * @channelid: the channel index.
1222 * @ctx: the context to be set in CDAN.
1224 * Return 0 for success, or negative error code for failure.
1226 int qbman_swp_CDAN_set_context(struct qbman_swp *s, uint16_t channelid,
1230 * qbman_swp_CDAN_enable() - Enable CDAN for the channel.
1231 * @s: the software portal object.
1232 * @channelid: the index of the channel to generate CDAN.
1234 * Return 0 for success, or negative error code for failure.
1236 int qbman_swp_CDAN_enable(struct qbman_swp *s, uint16_t channelid);
1239 * qbman_swp_CDAN_disable() - disable CDAN for the channel.
1240 * @s: the software portal object.
1241 * @channelid: the index of the channel to generate CDAN.
1243 * Return 0 for success, or negative error code for failure.
1245 int qbman_swp_CDAN_disable(struct qbman_swp *s, uint16_t channelid);
1248 * qbman_swp_CDAN_set_context_enable() - Set CDAN contest and enable CDAN
1249 * @s: the software portal object.
1250 * @channelid: the index of the channel to generate CDAN.
1251 * @ctx: the context set in CDAN.
1253 * Return 0 for success, or negative error code for failure.
1255 int qbman_swp_CDAN_set_context_enable(struct qbman_swp *s, uint16_t channelid,
1257 #endif /* !_FSL_QBMAN_PORTAL_H */