| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Roy Pledge | 3139 | 98.06% | 2 | 22.22% |
| Ioana Radulescu | 54 | 1.69% | 4 | 44.44% |
| Bogdan Purcareata | 4 | 0.12% | 2 | 22.22% |
| Horia Geantă | 4 | 0.12% | 1 | 11.11% |
| Total | 3201 | 9 |
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) /* * Copyright (C) 2014-2016 Freescale Semiconductor, Inc. * Copyright 2016 NXP * */ #include <asm/cacheflush.h> #include <linux/io.h> #include <linux/slab.h> #include <soc/fsl/dpaa2-global.h> #include "qbman-portal.h" #define QMAN_REV_4000 0x04000000 #define QMAN_REV_4100 0x04010000 #define QMAN_REV_4101 0x04010001 #define QMAN_REV_MASK 0xffff0000 /* All QBMan command and result structures use this "valid bit" encoding */ #define QB_VALID_BIT ((u32)0x80) /* QBMan portal management command codes */ #define QBMAN_MC_ACQUIRE 0x30 #define QBMAN_WQCHAN_CONFIGURE 0x46 /* CINH register offsets */ #define QBMAN_CINH_SWP_EQAR 0x8c0 #define QBMAN_CINH_SWP_DQPI 0xa00 #define QBMAN_CINH_SWP_DCAP 0xac0 #define QBMAN_CINH_SWP_SDQCR 0xb00 #define QBMAN_CINH_SWP_RAR 0xcc0 #define QBMAN_CINH_SWP_ISR 0xe00 #define QBMAN_CINH_SWP_IER 0xe40 #define QBMAN_CINH_SWP_ISDR 0xe80 #define QBMAN_CINH_SWP_IIR 0xec0 /* CENA register offsets */ #define QBMAN_CENA_SWP_EQCR(n) (0x000 + ((u32)(n) << 6)) #define QBMAN_CENA_SWP_DQRR(n) (0x200 + ((u32)(n) << 6)) #define QBMAN_CENA_SWP_RCR(n) (0x400 + ((u32)(n) << 6)) #define QBMAN_CENA_SWP_CR 0x600 #define QBMAN_CENA_SWP_RR(vb) (0x700 + ((u32)(vb) >> 1)) #define QBMAN_CENA_SWP_VDQCR 0x780 /* Reverse mapping of QBMAN_CENA_SWP_DQRR() */ #define QBMAN_IDX_FROM_DQRR(p) (((unsigned long)(p) & 0x1ff) >> 6) /* Define token used to determine if response written to memory is valid */ #define QMAN_DQ_TOKEN_VALID 1 /* SDQCR attribute codes */ #define QB_SDQCR_FC_SHIFT 29 #define QB_SDQCR_FC_MASK 0x1 #define QB_SDQCR_DCT_SHIFT 24 #define QB_SDQCR_DCT_MASK 0x3 #define QB_SDQCR_TOK_SHIFT 16 #define QB_SDQCR_TOK_MASK 0xff #define QB_SDQCR_SRC_SHIFT 0 #define QB_SDQCR_SRC_MASK 0xffff /* opaque token for static dequeues */ #define QMAN_SDQCR_TOKEN 0xbb enum qbman_sdqcr_dct { qbman_sdqcr_dct_null = 0, qbman_sdqcr_dct_prio_ics, qbman_sdqcr_dct_active_ics, qbman_sdqcr_dct_active }; enum qbman_sdqcr_fc { qbman_sdqcr_fc_one = 0, qbman_sdqcr_fc_up_to_3 = 1 }; /* Portal Access */ static inline u32 qbman_read_register(struct qbman_swp *p, u32 offset) { return readl_relaxed(p->addr_cinh + offset); } static inline void qbman_write_register(struct qbman_swp *p, u32 offset, u32 value) { writel_relaxed(value, p->addr_cinh + offset); } static inline void *qbman_get_cmd(struct qbman_swp *p, u32 offset) { return p->addr_cena + offset; } #define QBMAN_CINH_SWP_CFG 0xd00 #define SWP_CFG_DQRR_MF_SHIFT 20 #define SWP_CFG_EST_SHIFT 16 #define SWP_CFG_WN_SHIFT 14 #define SWP_CFG_RPM_SHIFT 12 #define SWP_CFG_DCM_SHIFT 10 #define SWP_CFG_EPM_SHIFT 8 #define SWP_CFG_SD_SHIFT 5 #define SWP_CFG_SP_SHIFT 4 #define SWP_CFG_SE_SHIFT 3 #define SWP_CFG_DP_SHIFT 2 #define SWP_CFG_DE_SHIFT 1 #define SWP_CFG_EP_SHIFT 0 static inline u32 qbman_set_swp_cfg(u8 max_fill, u8 wn, u8 est, u8 rpm, u8 dcm, u8 epm, int sd, int sp, int se, int dp, int de, int ep) { return (max_fill << SWP_CFG_DQRR_MF_SHIFT | est << SWP_CFG_EST_SHIFT | wn << SWP_CFG_WN_SHIFT | rpm << SWP_CFG_RPM_SHIFT | dcm << SWP_CFG_DCM_SHIFT | epm << SWP_CFG_EPM_SHIFT | sd << SWP_CFG_SD_SHIFT | sp << SWP_CFG_SP_SHIFT | se << SWP_CFG_SE_SHIFT | dp << SWP_CFG_DP_SHIFT | de << SWP_CFG_DE_SHIFT | ep << SWP_CFG_EP_SHIFT); } /** * qbman_swp_init() - Create a functional object representing the given * QBMan portal descriptor. * @d: the given qbman swp descriptor * * Return qbman_swp portal for success, NULL if the object cannot * be created. */ struct qbman_swp *qbman_swp_init(const struct qbman_swp_desc *d) { struct qbman_swp *p = kmalloc(sizeof(*p), GFP_KERNEL); u32 reg; if (!p) return NULL; p->desc = d; p->mc.valid_bit = QB_VALID_BIT; p->sdq = 0; p->sdq |= qbman_sdqcr_dct_prio_ics << QB_SDQCR_DCT_SHIFT; p->sdq |= qbman_sdqcr_fc_up_to_3 << QB_SDQCR_FC_SHIFT; p->sdq |= QMAN_SDQCR_TOKEN << QB_SDQCR_TOK_SHIFT; atomic_set(&p->vdq.available, 1); p->vdq.valid_bit = QB_VALID_BIT; p->dqrr.next_idx = 0; p->dqrr.valid_bit = QB_VALID_BIT; if ((p->desc->qman_version & QMAN_REV_MASK) < QMAN_REV_4100) { p->dqrr.dqrr_size = 4; p->dqrr.reset_bug = 1; } else { p->dqrr.dqrr_size = 8; p->dqrr.reset_bug = 0; } p->addr_cena = d->cena_bar; p->addr_cinh = d->cinh_bar; reg = qbman_set_swp_cfg(p->dqrr.dqrr_size, 1, /* Writes Non-cacheable */ 0, /* EQCR_CI stashing threshold */ 3, /* RPM: Valid bit mode, RCR in array mode */ 2, /* DCM: Discrete consumption ack mode */ 3, /* EPM: Valid bit mode, EQCR in array mode */ 0, /* mem stashing drop enable == FALSE */ 1, /* mem stashing priority == TRUE */ 0, /* mem stashing enable == FALSE */ 1, /* dequeue stashing priority == TRUE */ 0, /* dequeue stashing enable == FALSE */ 0); /* EQCR_CI stashing priority == FALSE */ qbman_write_register(p, QBMAN_CINH_SWP_CFG, reg); reg = qbman_read_register(p, QBMAN_CINH_SWP_CFG); if (!reg) { pr_err("qbman: the portal is not enabled!\n"); return NULL; } /* * SDQCR needs to be initialized to 0 when no channels are * being dequeued from or else the QMan HW will indicate an * error. The values that were calculated above will be * applied when dequeues from a specific channel are enabled. */ qbman_write_register(p, QBMAN_CINH_SWP_SDQCR, 0); return p; } /** * qbman_swp_finish() - Create and destroy a functional object representing * the given QBMan portal descriptor. * @p: the qbman_swp object to be destroyed */ void qbman_swp_finish(struct qbman_swp *p) { kfree(p); } /** * qbman_swp_interrupt_read_status() * @p: the given software portal * * Return the value in the SWP_ISR register. */ u32 qbman_swp_interrupt_read_status(struct qbman_swp *p) { return qbman_read_register(p, QBMAN_CINH_SWP_ISR); } /** * qbman_swp_interrupt_clear_status() * @p: the given software portal * @mask: The mask to clear in SWP_ISR register */ void qbman_swp_interrupt_clear_status(struct qbman_swp *p, u32 mask) { qbman_write_register(p, QBMAN_CINH_SWP_ISR, mask); } /** * qbman_swp_interrupt_get_trigger() - read interrupt enable register * @p: the given software portal * * Return the value in the SWP_IER register. */ u32 qbman_swp_interrupt_get_trigger(struct qbman_swp *p) { return qbman_read_register(p, QBMAN_CINH_SWP_IER); } /** * qbman_swp_interrupt_set_trigger() - enable interrupts for a swp * @p: the given software portal * @mask: The mask of bits to enable in SWP_IER */ void qbman_swp_interrupt_set_trigger(struct qbman_swp *p, u32 mask) { qbman_write_register(p, QBMAN_CINH_SWP_IER, mask); } /** * qbman_swp_interrupt_get_inhibit() - read interrupt mask register * @p: the given software portal object * * Return the value in the SWP_IIR register. */ int qbman_swp_interrupt_get_inhibit(struct qbman_swp *p) { return qbman_read_register(p, QBMAN_CINH_SWP_IIR); } /** * qbman_swp_interrupt_set_inhibit() - write interrupt mask register * @p: the given software portal object * @mask: The mask to set in SWP_IIR register */ void qbman_swp_interrupt_set_inhibit(struct qbman_swp *p, int inhibit) { qbman_write_register(p, QBMAN_CINH_SWP_IIR, inhibit ? 0xffffffff : 0); } /* * Different management commands all use this common base layer of code to issue * commands and poll for results. */ /* * Returns a pointer to where the caller should fill in their management command * (caller should ignore the verb byte) */ void *qbman_swp_mc_start(struct qbman_swp *p) { return qbman_get_cmd(p, QBMAN_CENA_SWP_CR); } /* * Commits merges in the caller-supplied command verb (which should not include * the valid-bit) and submits the command to hardware */ void qbman_swp_mc_submit(struct qbman_swp *p, void *cmd, u8 cmd_verb) { u8 *v = cmd; dma_wmb(); *v = cmd_verb | p->mc.valid_bit; } /* * Checks for a completed response (returns non-NULL if only if the response * is complete). */ void *qbman_swp_mc_result(struct qbman_swp *p) { u32 *ret, verb; ret = qbman_get_cmd(p, QBMAN_CENA_SWP_RR(p->mc.valid_bit)); /* Remove the valid-bit - command completed if the rest is non-zero */ verb = ret[0] & ~QB_VALID_BIT; if (!verb) return NULL; p->mc.valid_bit ^= QB_VALID_BIT; return ret; } #define QB_ENQUEUE_CMD_OPTIONS_SHIFT 0 enum qb_enqueue_commands { enqueue_empty = 0, enqueue_response_always = 1, enqueue_rejects_to_fq = 2 }; #define QB_ENQUEUE_CMD_ORP_ENABLE_SHIFT 2 #define QB_ENQUEUE_CMD_IRQ_ON_DISPATCH_SHIFT 3 #define QB_ENQUEUE_CMD_TARGET_TYPE_SHIFT 4 /** * qbman_eq_desc_clear() - Clear the contents of a descriptor to * default/starting state. */ void qbman_eq_desc_clear(struct qbman_eq_desc *d) { memset(d, 0, sizeof(*d)); } /** * qbman_eq_desc_set_no_orp() - Set enqueue descriptor without orp * @d: the enqueue descriptor. * @response_success: 1 = enqueue with response always; 0 = enqueue with * rejections returned on a FQ. */ void qbman_eq_desc_set_no_orp(struct qbman_eq_desc *d, int respond_success) { d->verb &= ~(1 << QB_ENQUEUE_CMD_ORP_ENABLE_SHIFT); if (respond_success) d->verb |= enqueue_response_always; else d->verb |= enqueue_rejects_to_fq; } /* * Exactly one of the following descriptor "targets" should be set. (Calling any * one of these will replace the effect of any prior call to one of these.) * -enqueue to a frame queue * -enqueue to a queuing destination */ /** * qbman_eq_desc_set_fq() - set the FQ for the enqueue command * @d: the enqueue descriptor * @fqid: the id of the frame queue to be enqueued */ void qbman_eq_desc_set_fq(struct qbman_eq_desc *d, u32 fqid) { d->verb &= ~(1 << QB_ENQUEUE_CMD_TARGET_TYPE_SHIFT); d->tgtid = cpu_to_le32(fqid); } /** * qbman_eq_desc_set_qd() - Set Queuing Destination for the enqueue command * @d: the enqueue descriptor * @qdid: the id of the queuing destination to be enqueued * @qd_bin: the queuing destination bin * @qd_prio: the queuing destination priority */ void qbman_eq_desc_set_qd(struct qbman_eq_desc *d, u32 qdid, u32 qd_bin, u32 qd_prio) { d->verb |= 1 << QB_ENQUEUE_CMD_TARGET_TYPE_SHIFT; d->tgtid = cpu_to_le32(qdid); d->qdbin = cpu_to_le16(qd_bin); d->qpri = qd_prio; } #define EQAR_IDX(eqar) ((eqar) & 0x7) #define EQAR_VB(eqar) ((eqar) & 0x80) #define EQAR_SUCCESS(eqar) ((eqar) & 0x100) /** * qbman_swp_enqueue() - Issue an enqueue command * @s: the software portal used for enqueue * @d: the enqueue descriptor * @fd: the frame descriptor to be enqueued * * Please note that 'fd' should only be NULL if the "action" of the * descriptor is "orp_hole" or "orp_nesn". * * Return 0 for successful enqueue, -EBUSY if the EQCR is not ready. */ int qbman_swp_enqueue(struct qbman_swp *s, const struct qbman_eq_desc *d, const struct dpaa2_fd *fd) { struct qbman_eq_desc *p; u32 eqar = qbman_read_register(s, QBMAN_CINH_SWP_EQAR); if (!EQAR_SUCCESS(eqar)) return -EBUSY; p = qbman_get_cmd(s, QBMAN_CENA_SWP_EQCR(EQAR_IDX(eqar))); memcpy(&p->dca, &d->dca, 31); memcpy(&p->fd, fd, sizeof(*fd)); /* Set the verb byte, have to substitute in the valid-bit */ dma_wmb(); p->verb = d->verb | EQAR_VB(eqar); return 0; } /* Static (push) dequeue */ /** * qbman_swp_push_get() - Get the push dequeue setup * @p: the software portal object * @channel_idx: the channel index to query * @enabled: returned boolean to show whether the push dequeue is enabled * for the given channel */ void qbman_swp_push_get(struct qbman_swp *s, u8 channel_idx, int *enabled) { u16 src = (s->sdq >> QB_SDQCR_SRC_SHIFT) & QB_SDQCR_SRC_MASK; WARN_ON(channel_idx > 15); *enabled = src | (1 << channel_idx); } /** * qbman_swp_push_set() - Enable or disable push dequeue * @p: the software portal object * @channel_idx: the channel index (0 to 15) * @enable: enable or disable push dequeue */ void qbman_swp_push_set(struct qbman_swp *s, u8 channel_idx, int enable) { u16 dqsrc; WARN_ON(channel_idx > 15); if (enable) s->sdq |= 1 << channel_idx; else s->sdq &= ~(1 << channel_idx); /* Read make the complete src map. If no channels are enabled * the SDQCR must be 0 or else QMan will assert errors */ dqsrc = (s->sdq >> QB_SDQCR_SRC_SHIFT) & QB_SDQCR_SRC_MASK; if (dqsrc != 0) qbman_write_register(s, QBMAN_CINH_SWP_SDQCR, s->sdq); else qbman_write_register(s, QBMAN_CINH_SWP_SDQCR, 0); } #define QB_VDQCR_VERB_DCT_SHIFT 0 #define QB_VDQCR_VERB_DT_SHIFT 2 #define QB_VDQCR_VERB_RLS_SHIFT 4 #define QB_VDQCR_VERB_WAE_SHIFT 5 enum qb_pull_dt_e { qb_pull_dt_channel, qb_pull_dt_workqueue, qb_pull_dt_framequeue }; /** * qbman_pull_desc_clear() - Clear the contents of a descriptor to * default/starting state * @d: the pull dequeue descriptor to be cleared */ void qbman_pull_desc_clear(struct qbman_pull_desc *d) { memset(d, 0, sizeof(*d)); } /** * qbman_pull_desc_set_storage()- Set the pull dequeue storage * @d: the pull dequeue descriptor to be set * @storage: the pointer of the memory to store the dequeue result * @storage_phys: the physical address of the storage memory * @stash: to indicate whether write allocate is enabled * * If not called, or if called with 'storage' as NULL, the result pull dequeues * will produce results to DQRR. If 'storage' is non-NULL, then results are * produced to the given memory location (using the DMA address which * the caller provides in 'storage_phys'), and 'stash' controls whether or not * those writes to main-memory express a cache-warming attribute. */ void qbman_pull_desc_set_storage(struct qbman_pull_desc *d, struct dpaa2_dq *storage, dma_addr_t storage_phys, int stash) { /* save the virtual address */ d->rsp_addr_virt = (u64)(uintptr_t)storage; if (!storage) { d->verb &= ~(1 << QB_VDQCR_VERB_RLS_SHIFT); return; } d->verb |= 1 << QB_VDQCR_VERB_RLS_SHIFT; if (stash) d->verb |= 1 << QB_VDQCR_VERB_WAE_SHIFT; else d->verb &= ~(1 << QB_VDQCR_VERB_WAE_SHIFT); d->rsp_addr = cpu_to_le64(storage_phys); } /** * qbman_pull_desc_set_numframes() - Set the number of frames to be dequeued * @d: the pull dequeue descriptor to be set * @numframes: number of frames to be set, must be between 1 and 16, inclusive */ void qbman_pull_desc_set_numframes(struct qbman_pull_desc *d, u8 numframes) { d->numf = numframes - 1; } /* * Exactly one of the following descriptor "actions" should be set. (Calling any * one of these will replace the effect of any prior call to one of these.) * - pull dequeue from the given frame queue (FQ) * - pull dequeue from any FQ in the given work queue (WQ) * - pull dequeue from any FQ in any WQ in the given channel */ /** * qbman_pull_desc_set_fq() - Set fqid from which the dequeue command dequeues * @fqid: the frame queue index of the given FQ */ void qbman_pull_desc_set_fq(struct qbman_pull_desc *d, u32 fqid) { d->verb |= 1 << QB_VDQCR_VERB_DCT_SHIFT; d->verb |= qb_pull_dt_framequeue << QB_VDQCR_VERB_DT_SHIFT; d->dq_src = cpu_to_le32(fqid); } /** * qbman_pull_desc_set_wq() - Set wqid from which the dequeue command dequeues * @wqid: composed of channel id and wqid within the channel * @dct: the dequeue command type */ void qbman_pull_desc_set_wq(struct qbman_pull_desc *d, u32 wqid, enum qbman_pull_type_e dct) { d->verb |= dct << QB_VDQCR_VERB_DCT_SHIFT; d->verb |= qb_pull_dt_workqueue << QB_VDQCR_VERB_DT_SHIFT; d->dq_src = cpu_to_le32(wqid); } /** * qbman_pull_desc_set_channel() - Set channelid from which the dequeue command * dequeues * @chid: the channel id to be dequeued * @dct: the dequeue command type */ void qbman_pull_desc_set_channel(struct qbman_pull_desc *d, u32 chid, enum qbman_pull_type_e dct) { d->verb |= dct << QB_VDQCR_VERB_DCT_SHIFT; d->verb |= qb_pull_dt_channel << QB_VDQCR_VERB_DT_SHIFT; d->dq_src = cpu_to_le32(chid); } /** * qbman_swp_pull() - Issue the pull dequeue command * @s: the software portal object * @d: the software portal descriptor which has been configured with * the set of qbman_pull_desc_set_*() calls * * Return 0 for success, and -EBUSY if the software portal is not ready * to do pull dequeue. */ int qbman_swp_pull(struct qbman_swp *s, struct qbman_pull_desc *d) { struct qbman_pull_desc *p; if (!atomic_dec_and_test(&s->vdq.available)) { atomic_inc(&s->vdq.available); return -EBUSY; } s->vdq.storage = (void *)(uintptr_t)d->rsp_addr_virt; p = qbman_get_cmd(s, QBMAN_CENA_SWP_VDQCR); p->numf = d->numf; p->tok = QMAN_DQ_TOKEN_VALID; p->dq_src = d->dq_src; p->rsp_addr = d->rsp_addr; p->rsp_addr_virt = d->rsp_addr_virt; dma_wmb(); /* Set the verb byte, have to substitute in the valid-bit */ p->verb = d->verb | s->vdq.valid_bit; s->vdq.valid_bit ^= QB_VALID_BIT; return 0; } #define QMAN_DQRR_PI_MASK 0xf /** * qbman_swp_dqrr_next() - Get an valid DQRR entry * @s: the software portal object * * Return NULL if there are no unconsumed DQRR entries. Return a DQRR entry * only once, so repeated calls can return a sequence of DQRR entries, without * requiring they be consumed immediately or in any particular order. */ const struct dpaa2_dq *qbman_swp_dqrr_next(struct qbman_swp *s) { u32 verb; u32 response_verb; u32 flags; struct dpaa2_dq *p; /* Before using valid-bit to detect if something is there, we have to * handle the case of the DQRR reset bug... */ if (unlikely(s->dqrr.reset_bug)) { /* * We pick up new entries by cache-inhibited producer index, * which means that a non-coherent mapping would require us to * invalidate and read *only* once that PI has indicated that * there's an entry here. The first trip around the DQRR ring * will be much less efficient than all subsequent trips around * it... */ u8 pi = qbman_read_register(s, QBMAN_CINH_SWP_DQPI) & QMAN_DQRR_PI_MASK; /* there are new entries if pi != next_idx */ if (pi == s->dqrr.next_idx) return NULL; /* * if next_idx is/was the last ring index, and 'pi' is * different, we can disable the workaround as all the ring * entries have now been DMA'd to so valid-bit checking is * repaired. Note: this logic needs to be based on next_idx * (which increments one at a time), rather than on pi (which * can burst and wrap-around between our snapshots of it). */ if (s->dqrr.next_idx == (s->dqrr.dqrr_size - 1)) { pr_debug("next_idx=%d, pi=%d, clear reset bug\n", s->dqrr.next_idx, pi); s->dqrr.reset_bug = 0; } prefetch(qbman_get_cmd(s, QBMAN_CENA_SWP_DQRR(s->dqrr.next_idx))); } p = qbman_get_cmd(s, QBMAN_CENA_SWP_DQRR(s->dqrr.next_idx)); verb = p->dq.verb; /* * If the valid-bit isn't of the expected polarity, nothing there. Note, * in the DQRR reset bug workaround, we shouldn't need to skip these * check, because we've already determined that a new entry is available * and we've invalidated the cacheline before reading it, so the * valid-bit behaviour is repaired and should tell us what we already * knew from reading PI. */ if ((verb & QB_VALID_BIT) != s->dqrr.valid_bit) { prefetch(qbman_get_cmd(s, QBMAN_CENA_SWP_DQRR(s->dqrr.next_idx))); return NULL; } /* * There's something there. Move "next_idx" attention to the next ring * entry (and prefetch it) before returning what we found. */ s->dqrr.next_idx++; s->dqrr.next_idx &= s->dqrr.dqrr_size - 1; /* Wrap around */ if (!s->dqrr.next_idx) s->dqrr.valid_bit ^= QB_VALID_BIT; /* * If this is the final response to a volatile dequeue command * indicate that the vdq is available */ flags = p->dq.stat; response_verb = verb & QBMAN_RESULT_MASK; if ((response_verb == QBMAN_RESULT_DQ) && (flags & DPAA2_DQ_STAT_VOLATILE) && (flags & DPAA2_DQ_STAT_EXPIRED)) atomic_inc(&s->vdq.available); prefetch(qbman_get_cmd(s, QBMAN_CENA_SWP_DQRR(s->dqrr.next_idx))); return p; } /** * qbman_swp_dqrr_consume() - Consume DQRR entries previously returned from * qbman_swp_dqrr_next(). * @s: the software portal object * @dq: the DQRR entry to be consumed */ void qbman_swp_dqrr_consume(struct qbman_swp *s, const struct dpaa2_dq *dq) { qbman_write_register(s, QBMAN_CINH_SWP_DCAP, QBMAN_IDX_FROM_DQRR(dq)); } /** * qbman_result_has_new_result() - Check and get the dequeue response from the * dq storage memory set in pull dequeue command * @s: the software portal object * @dq: the dequeue result read from the memory * * Return 1 for getting a valid dequeue result, or 0 for not getting a valid * dequeue result. * * Only used for user-provided storage of dequeue results, not DQRR. For * efficiency purposes, the driver will perform any required endianness * conversion to ensure that the user's dequeue result storage is in host-endian * format. As such, once the user has called qbman_result_has_new_result() and * been returned a valid dequeue result, they should not call it again on * the same memory location (except of course if another dequeue command has * been executed to produce a new result to that location). */ int qbman_result_has_new_result(struct qbman_swp *s, const struct dpaa2_dq *dq) { if (dq->dq.tok != QMAN_DQ_TOKEN_VALID) return 0; /* * Set token to be 0 so we will detect change back to 1 * next time the looping is traversed. Const is cast away here * as we want users to treat the dequeue responses as read only. */ ((struct dpaa2_dq *)dq)->dq.tok = 0; /* * Determine whether VDQCR is available based on whether the * current result is sitting in the first storage location of * the busy command. */ if (s->vdq.storage == dq) { s->vdq.storage = NULL; atomic_inc(&s->vdq.available); } return 1; } /** * qbman_release_desc_clear() - Clear the contents of a descriptor to * default/starting state. */ void qbman_release_desc_clear(struct qbman_release_desc *d) { memset(d, 0, sizeof(*d)); d->verb = 1 << 5; /* Release Command Valid */ } /** * qbman_release_desc_set_bpid() - Set the ID of the buffer pool to release to */ void qbman_release_desc_set_bpid(struct qbman_release_desc *d, u16 bpid) { d->bpid = cpu_to_le16(bpid); } /** * qbman_release_desc_set_rcdi() - Determines whether or not the portal's RCDI * interrupt source should be asserted after the release command is completed. */ void qbman_release_desc_set_rcdi(struct qbman_release_desc *d, int enable) { if (enable) d->verb |= 1 << 6; else d->verb &= ~(1 << 6); } #define RAR_IDX(rar) ((rar) & 0x7) #define RAR_VB(rar) ((rar) & 0x80) #define RAR_SUCCESS(rar) ((rar) & 0x100) /** * qbman_swp_release() - Issue a buffer release command * @s: the software portal object * @d: the release descriptor * @buffers: a pointer pointing to the buffer address to be released * @num_buffers: number of buffers to be released, must be less than 8 * * Return 0 for success, -EBUSY if the release command ring is not ready. */ int qbman_swp_release(struct qbman_swp *s, const struct qbman_release_desc *d, const u64 *buffers, unsigned int num_buffers) { int i; struct qbman_release_desc *p; u32 rar; if (!num_buffers || (num_buffers > 7)) return -EINVAL; rar = qbman_read_register(s, QBMAN_CINH_SWP_RAR); if (!RAR_SUCCESS(rar)) return -EBUSY; /* Start the release command */ p = qbman_get_cmd(s, QBMAN_CENA_SWP_RCR(RAR_IDX(rar))); /* Copy the caller's buffer pointers to the command */ for (i = 0; i < num_buffers; i++) p->buf[i] = cpu_to_le64(buffers[i]); p->bpid = d->bpid; /* * Set the verb byte, have to substitute in the valid-bit and the number * of buffers. */ dma_wmb(); p->verb = d->verb | RAR_VB(rar) | num_buffers; return 0; } struct qbman_acquire_desc { u8 verb; u8 reserved; __le16 bpid; u8 num; u8 reserved2[59]; }; struct qbman_acquire_rslt { u8 verb; u8 rslt; __le16 reserved; u8 num; u8 reserved2[3]; __le64 buf[7]; }; /** * qbman_swp_acquire() - Issue a buffer acquire command * @s: the software portal object * @bpid: the buffer pool index * @buffers: a pointer pointing to the acquired buffer addresses * @num_buffers: number of buffers to be acquired, must be less than 8 * * Return 0 for success, or negative error code if the acquire command * fails. */ int qbman_swp_acquire(struct qbman_swp *s, u16 bpid, u64 *buffers, unsigned int num_buffers) { struct qbman_acquire_desc *p; struct qbman_acquire_rslt *r; int i; if (!num_buffers || (num_buffers > 7)) return -EINVAL; /* Start the management command */ p = qbman_swp_mc_start(s); if (!p) return -EBUSY; /* Encode the caller-provided attributes */ p->bpid = cpu_to_le16(bpid); p->num = num_buffers; /* Complete the management command */ r = qbman_swp_mc_complete(s, p, QBMAN_MC_ACQUIRE); if (unlikely(!r)) { pr_err("qbman: acquire from BPID %d failed, no response\n", bpid); return -EIO; } /* Decode the outcome */ WARN_ON((r->verb & 0x7f) != QBMAN_MC_ACQUIRE); /* Determine success or failure */ if (unlikely(r->rslt != QBMAN_MC_RSLT_OK)) { pr_err("qbman: acquire from BPID 0x%x failed, code=0x%02x\n", bpid, r->rslt); return -EIO; } WARN_ON(r->num > num_buffers); /* Copy the acquired buffers to the caller's array */ for (i = 0; i < r->num; i++) buffers[i] = le64_to_cpu(r->buf[i]); return (int)r->num; } struct qbman_alt_fq_state_desc { u8 verb; u8 reserved[3]; __le32 fqid; u8 reserved2[56]; }; struct qbman_alt_fq_state_rslt { u8 verb; u8 rslt; u8 reserved[62]; }; #define ALT_FQ_FQID_MASK 0x00FFFFFF int qbman_swp_alt_fq_state(struct qbman_swp *s, u32 fqid, u8 alt_fq_verb) { struct qbman_alt_fq_state_desc *p; struct qbman_alt_fq_state_rslt *r; /* Start the management command */ p = qbman_swp_mc_start(s); if (!p) return -EBUSY; p->fqid = cpu_to_le32(fqid & ALT_FQ_FQID_MASK); /* Complete the management command */ r = qbman_swp_mc_complete(s, p, alt_fq_verb); if (unlikely(!r)) { pr_err("qbman: mgmt cmd failed, no response (verb=0x%x)\n", alt_fq_verb); return -EIO; } /* Decode the outcome */ WARN_ON((r->verb & QBMAN_RESULT_MASK) != alt_fq_verb); /* Determine success or failure */ if (unlikely(r->rslt != QBMAN_MC_RSLT_OK)) { pr_err("qbman: ALT FQID %d failed: verb = 0x%08x code = 0x%02x\n", fqid, r->verb, r->rslt); return -EIO; } return 0; } struct qbman_cdan_ctrl_desc { u8 verb; u8 reserved; __le16 ch; u8 we; u8 ctrl; __le16 reserved2; __le64 cdan_ctx; u8 reserved3[48]; }; struct qbman_cdan_ctrl_rslt { u8 verb; u8 rslt; __le16 ch; u8 reserved[60]; }; int qbman_swp_CDAN_set(struct qbman_swp *s, u16 channelid, u8 we_mask, u8 cdan_en, u64 ctx) { struct qbman_cdan_ctrl_desc *p = NULL; struct qbman_cdan_ctrl_rslt *r = NULL; /* Start the management command */ p = qbman_swp_mc_start(s); if (!p) return -EBUSY; /* Encode the caller-provided attributes */ p->ch = cpu_to_le16(channelid); p->we = we_mask; if (cdan_en) p->ctrl = 1; else p->ctrl = 0; p->cdan_ctx = cpu_to_le64(ctx); /* Complete the management command */ r = qbman_swp_mc_complete(s, p, QBMAN_WQCHAN_CONFIGURE); if (unlikely(!r)) { pr_err("qbman: wqchan config failed, no response\n"); return -EIO; } WARN_ON((r->verb & 0x7f) != QBMAN_WQCHAN_CONFIGURE); /* Determine success or failure */ if (unlikely(r->rslt != QBMAN_MC_RSLT_OK)) { pr_err("qbman: CDAN cQID %d failed: code = 0x%02x\n", channelid, r->rslt); return -EIO; } return 0; }
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