/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright © 2021-2022 Dmitry Salychev * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _DPAA2_SWP_H #define _DPAA2_SWP_H #include #include "dpaa2_types.h" #include "dpaa2_bp.h" /* * DPAA2 QBMan software portal. */ /* All QBMan commands and result structures use this "valid bit" encoding. */ #define DPAA2_SWP_VALID_BIT ((uint32_t) 0x80) #define DPAA2_SWP_TIMEOUT 100000 /* in us */ #define DPAA2_SWP_CMD_PARAMS_N 8u #define DPAA2_SWP_RSP_PARAMS_N 8u /* * Maximum number of buffers that can be acquired/released through a single * QBMan command. */ #define DPAA2_SWP_BUFS_PER_CMD 7u /* * Number of times to retry DPIO portal operations while waiting for portal to * finish executing current command and become available. * * We want to avoid being stuck in a while loop in case hardware becomes * unresponsive, but not give up too easily if the portal really is busy for * valid reasons. */ #define DPAA2_SWP_BUSY_RETRIES 1000 /* Versions of the QBMan software portals. */ #define DPAA2_SWP_REV_4000 0x04000000 #define DPAA2_SWP_REV_4100 0x04010000 #define DPAA2_SWP_REV_4101 0x04010001 #define DPAA2_SWP_REV_5000 0x05000000 #define DPAA2_SWP_REV_MASK 0xFFFF0000 /* Registers in the cache-inhibited area of the software portal. */ #define DPAA2_SWP_CINH_CR 0x600 /* Management Command reg.*/ #define DPAA2_SWP_CINH_EQCR_PI 0x800 /* Enqueue Ring, Producer Index */ #define DPAA2_SWP_CINH_EQCR_CI 0x840 /* Enqueue Ring, Consumer Index */ #define DPAA2_SWP_CINH_CR_RT 0x900 /* CR Read Trigger */ #define DPAA2_SWP_CINH_VDQCR_RT 0x940 /* VDQCR Read Trigger */ #define DPAA2_SWP_CINH_EQCR_AM_RT 0x980 #define DPAA2_SWP_CINH_RCR_AM_RT 0x9C0 #define DPAA2_SWP_CINH_DQPI 0xA00 /* DQRR Producer Index reg. */ #define DPAA2_SWP_CINH_DQRR_ITR 0xA80 /* DQRR interrupt timeout reg. */ #define DPAA2_SWP_CINH_DCAP 0xAC0 /* DQRR Consumption Ack. reg. */ #define DPAA2_SWP_CINH_SDQCR 0xB00 /* Static Dequeue Command reg. */ #define DPAA2_SWP_CINH_EQCR_AM_RT2 0xB40 #define DPAA2_SWP_CINH_RCR_PI 0xC00 /* Release Ring, Producer Index */ #define DPAA2_SWP_CINH_RAR 0xCC0 /* Release Array Allocation reg. */ #define DPAA2_SWP_CINH_CFG 0xD00 #define DPAA2_SWP_CINH_ISR 0xE00 #define DPAA2_SWP_CINH_IER 0xE40 #define DPAA2_SWP_CINH_ISDR 0xE80 #define DPAA2_SWP_CINH_IIR 0xEC0 #define DPAA2_SWP_CINH_ITPR 0xF40 /* Registers in the cache-enabled area of the software portal. */ #define DPAA2_SWP_CENA_EQCR(n) (0x000 + ((uint32_t)(n) << 6)) #define DPAA2_SWP_CENA_DQRR(n) (0x200 + ((uint32_t)(n) << 6)) #define DPAA2_SWP_CENA_RCR(n) (0x400 + ((uint32_t)(n) << 6)) #define DPAA2_SWP_CENA_CR (0x600) /* Management Command reg. */ #define DPAA2_SWP_CENA_RR(vb) (0x700 + ((uint32_t)(vb) >> 1)) #define DPAA2_SWP_CENA_VDQCR (0x780) #define DPAA2_SWP_CENA_EQCR_CI (0x840) /* Registers in the cache-enabled area of the software portal (memory-backed). */ #define DPAA2_SWP_CENA_DQRR_MEM(n) (0x0800 + ((uint32_t)(n) << 6)) #define DPAA2_SWP_CENA_RCR_MEM(n) (0x1400 + ((uint32_t)(n) << 6)) #define DPAA2_SWP_CENA_CR_MEM (0x1600) /* Management Command reg. */ #define DPAA2_SWP_CENA_RR_MEM (0x1680) /* Management Response reg. */ #define DPAA2_SWP_CENA_VDQCR_MEM (0x1780) #define DPAA2_SWP_CENA_EQCR_CI_MEMBACK (0x1840) /* Shifts in the portal's configuration register. */ #define DPAA2_SWP_CFG_DQRR_MF_SHIFT 20 #define DPAA2_SWP_CFG_EST_SHIFT 16 #define DPAA2_SWP_CFG_CPBS_SHIFT 15 #define DPAA2_SWP_CFG_WN_SHIFT 14 #define DPAA2_SWP_CFG_RPM_SHIFT 12 #define DPAA2_SWP_CFG_DCM_SHIFT 10 #define DPAA2_SWP_CFG_EPM_SHIFT 8 #define DPAA2_SWP_CFG_VPM_SHIFT 7 #define DPAA2_SWP_CFG_CPM_SHIFT 6 #define DPAA2_SWP_CFG_SD_SHIFT 5 #define DPAA2_SWP_CFG_SP_SHIFT 4 #define DPAA2_SWP_CFG_SE_SHIFT 3 #define DPAA2_SWP_CFG_DP_SHIFT 2 #define DPAA2_SWP_CFG_DE_SHIFT 1 #define DPAA2_SWP_CFG_EP_SHIFT 0 /* Static Dequeue Command Register attribute codes */ #define DPAA2_SDQCR_FC_SHIFT 29 /* Dequeue Command Frame Count */ #define DPAA2_SDQCR_FC_MASK 0x1 #define DPAA2_SDQCR_DCT_SHIFT 24 /* Dequeue Command Type */ #define DPAA2_SDQCR_DCT_MASK 0x3 #define DPAA2_SDQCR_TOK_SHIFT 16 /* Dequeue Command Token */ #define DPAA2_SDQCR_TOK_MASK 0xff #define DPAA2_SDQCR_SRC_SHIFT 0 /* Dequeue Source */ #define DPAA2_SDQCR_SRC_MASK 0xffff /* * Read trigger bit is used to trigger QMan to read a command from memory, * without having software perform a cache flush to force a write of the command * to QMan. * * NOTE: Implemented in QBMan 5.0 or above. */ #define DPAA2_SWP_RT_MODE ((uint32_t)0x100) /* Interrupt Enable Register bits. */ #define DPAA2_SWP_INTR_EQRI 0x01 #define DPAA2_SWP_INTR_EQDI 0x02 #define DPAA2_SWP_INTR_DQRI 0x04 #define DPAA2_SWP_INTR_RCRI 0x08 #define DPAA2_SWP_INTR_RCDI 0x10 #define DPAA2_SWP_INTR_VDCI 0x20 /* "Write Enable" bitmask for a command to configure SWP WQ Channel.*/ #define DPAA2_WQCHAN_WE_EN (0x1u) /* Enable CDAN generation */ #define DPAA2_WQCHAN_WE_ICD (0x2u) /* Interrupt Coalescing Disable */ #define DPAA2_WQCHAN_WE_CTX (0x4u) /* Definitions for parsing DQRR entries. */ #define DPAA2_DQRR_RESULT_MASK (0x7Fu) #define DPAA2_DQRR_RESULT_DQ (0x60u) #define DPAA2_DQRR_RESULT_FQRN (0x21u) #define DPAA2_DQRR_RESULT_FQRNI (0x22u) #define DPAA2_DQRR_RESULT_FQPN (0x24u) #define DPAA2_DQRR_RESULT_FQDAN (0x25u) #define DPAA2_DQRR_RESULT_CDAN (0x26u) #define DPAA2_DQRR_RESULT_CSCN_MEM (0x27u) #define DPAA2_DQRR_RESULT_CGCU (0x28u) #define DPAA2_DQRR_RESULT_BPSCN (0x29u) #define DPAA2_DQRR_RESULT_CSCN_WQ (0x2au) /* Frame dequeue statuses */ #define DPAA2_DQ_STAT_FQEMPTY (0x80u) /* FQ is empty */ #define DPAA2_DQ_STAT_HELDACTIVE (0x40u) /* FQ is held active */ #define DPAA2_DQ_STAT_FORCEELIGIBLE (0x20u) /* FQ force eligible */ #define DPAA2_DQ_STAT_VALIDFRAME (0x10u) /* valid frame */ #define DPAA2_DQ_STAT_ODPVALID (0x04u) /* FQ ODP enable */ #define DPAA2_DQ_STAT_VOLATILE (0x02u) /* volatile dequeue (VDC) */ #define DPAA2_DQ_STAT_EXPIRED (0x01u) /* VDC is expired */ /* * Portal flags. * * TODO: Use the same flags for both MC and software portals. */ #define DPAA2_SWP_DEF 0x0u #define DPAA2_SWP_NOWAIT_ALLOC 0x2u /* Do not sleep during init */ #define DPAA2_SWP_LOCKED 0x4000u /* Wait till portal's unlocked */ #define DPAA2_SWP_DESTROYED 0x8000u /* Terminate any operations */ /* Command return codes. */ #define DPAA2_SWP_STAT_OK 0x0 #define DPAA2_SWP_STAT_NO_MEMORY 0x9 /* No memory available */ #define DPAA2_SWP_STAT_PORTAL_DISABLED 0xFD /* QBMan portal disabled */ #define DPAA2_SWP_STAT_EINVAL 0xFE /* Invalid argument */ #define DPAA2_SWP_STAT_ERR 0xFF /* General error */ /* Opaque token for static dequeues. */ #define DPAA2_SWP_SDQCR_TOKEN 0xBBu /* Opaque token for static dequeues. */ #define DPAA2_SWP_VDQCR_TOKEN 0xCCu #define DPAA2_SWP_LOCK(__swp, __flags) do { \ mtx_assert(&(__swp)->lock, MA_NOTOWNED); \ mtx_lock(&(__swp)->lock); \ *(__flags) = (__swp)->flags; \ (__swp)->flags |= DPAA2_SWP_LOCKED; \ } while (0) #define DPAA2_SWP_UNLOCK(__swp) do { \ mtx_assert(&(__swp)->lock, MA_OWNED); \ (__swp)->flags &= ~DPAA2_SWP_LOCKED; \ mtx_unlock(&(__swp)->lock); \ } while (0) enum dpaa2_fd_format { DPAA2_FD_SINGLE = 0, DPAA2_FD_LIST, DPAA2_FD_SG }; /** * @brief Enqueue command descriptor. * * NOTE: 32 bytes. */ struct dpaa2_eq_desc { uint8_t verb; uint8_t dca; uint16_t seqnum; uint16_t orpid; uint16_t _reserved; uint32_t tgtid; uint32_t tag; uint16_t qdbin; uint8_t qpri; uint8_t _reserved1[3]; uint8_t wae; uint8_t rspid; uint64_t rsp_addr; } __packed; /** * @brief Frame Dequeue Response (FDR) descriptor. * * NOTE: 32 bytes. */ struct dpaa2_fdr_desc { uint8_t verb; uint8_t stat; uint16_t seqnum; uint16_t oprid; uint8_t _reserved; uint8_t tok; uint32_t fqid; uint32_t _reserved1; uint32_t fq_byte_cnt; uint32_t fq_frm_cnt; uint64_t fqd_ctx; } __packed; /** * @brief State Change Notification Message (SCNM). * * NOTE: 16 bytes. */ struct dpaa2_scn { uint8_t verb; uint8_t stat; uint8_t state; uint8_t _reserved; uint32_t rid_tok; uint64_t ctx; } __packed; /** * @brief DPAA2 frame descriptor. * * addr: Memory address of the start of the buffer holding the * frame data or the buffer containing the scatter/gather * list. * data_length: Length of the frame data (in bytes). * bpid_ivp_bmt: Buffer pool ID (14 bit + BMT bit + IVP bit) * offset_fmt_sl: Frame data offset, frame format and short-length fields. * frame_ctx: Frame context. This field allows the sender of a frame * to communicate some out-of-band information to the * receiver of the frame. * ctrl: Control bits (ERR, CBMT, ASAL, PTAC, DROPP, SC, DD). * flow_ctx: Frame flow context. Associates the frame with a flow * structure. QMan may use the FLC field for 3 purposes: * stashing control, order definition point identification, * and enqueue replication control. * * NOTE: 32 bytes. */ struct dpaa2_fd { uint64_t addr; uint32_t data_length; uint16_t bpid_ivp_bmt; uint16_t offset_fmt_sl; uint32_t frame_ctx; uint32_t ctrl; uint64_t flow_ctx; } __packed; /** * @brief DPAA2 scatter/gather entry. * * NOTE: 16 bytes. */ struct dpaa2_sg_entry { uint64_t addr; uint32_t len; uint16_t bpid; uint16_t offset_fmt; } __packed; /** * @brief Frame Dequeue Response (FDR). * * NOTE: 64 bytes. */ struct dpaa2_fdr { struct dpaa2_fdr_desc desc; struct dpaa2_fd fd; } __packed; /** * @brief Dequeue Response Message. * * NOTE: 64 bytes. */ struct dpaa2_dq { union { struct { uint8_t verb; uint8_t _reserved[63]; } common; struct dpaa2_fdr fdr; /* Frame Dequeue Response */ struct dpaa2_scn scn; /* State Change Notification */ }; } __packed; /** * @brief Descriptor of the QBMan software portal. * * cena_res: Unmapped cache-enabled part of the portal's I/O memory. * cena_map: Mapped cache-enabled part of the portal's I/O memory. * cinh_res: Unmapped cache-inhibited part of the portal's I/O memory. * cinh_map: Mapped cache-inhibited part of the portal's I/O memory. * * dpio_dev: Device associated with the DPIO object to manage this * portal. * swp_version: Hardware IP version of the software portal. * swp_clk: QBMAN clock frequency value in Hz. * swp_cycles_ratio: How many 256 QBMAN cycles fit into one ns. * swp_id: Software portal ID. * * has_notif: True if the notification mode is used. * has_8prio: True for a channel with 8 priority WQs. Ignored unless * "has_notif" is true. */ struct dpaa2_swp_desc { struct resource *cena_res; struct resource_map *cena_map; struct resource *cinh_res; struct resource_map *cinh_map; device_t dpio_dev; uint32_t swp_version; uint32_t swp_clk; uint32_t swp_cycles_ratio; uint16_t swp_id; bool has_notif; bool has_8prio; }; /** * @brief Command holds data to be written to the software portal. */ struct dpaa2_swp_cmd { uint64_t params[DPAA2_SWP_CMD_PARAMS_N]; }; /** * @brief Command response holds data received from the software portal. */ struct dpaa2_swp_rsp { uint64_t params[DPAA2_SWP_RSP_PARAMS_N]; }; /** * @brief QBMan software portal. * * res: Unmapped cache-enabled and cache-inhibited parts of the portal. * map: Mapped cache-enabled and cache-inhibited parts of the portal. * desc: Descriptor of the QBMan software portal. * lock: Lock to guard an access to the portal. * cv: Conditional variable helps to wait for the helper object's state * change. * flags: Current state of the object. * sdq: Push dequeues status. * mc: Management commands data. * mr: Management response data. * dqrr: Dequeue Response Ring is used to issue frame dequeue responses * from the QBMan to the driver. * eqcr: Enqueue Command Ring is used to issue frame enqueue commands * from the driver to the QBMan. */ struct dpaa2_swp { struct resource *cena_res; struct resource_map *cena_map; struct resource *cinh_res; struct resource_map *cinh_map; struct mtx lock; struct dpaa2_swp_desc *desc; uint16_t flags; /* Static Dequeue Command Register value (to obtain CDANs). */ uint32_t sdq; /* Volatile Dequeue Command (to obtain frames). */ struct { uint32_t valid_bit; /* 0x00 or 0x80 */ } vdq; struct { bool atomic; bool writes_cinh; bool mem_backed; } cfg; /* Software portal configuration. */ struct { uint32_t valid_bit; /* 0x00 or 0x80 */ } mc; struct { uint32_t valid_bit; /* 0x00 or 0x80 */ } mr; struct { uint32_t next_idx; uint32_t valid_bit; uint8_t ring_size; bool reset_bug; /* dqrr reset workaround */ uint32_t irq_threshold; uint32_t irq_itp; } dqrr; struct { uint32_t pi; /* producer index */ uint32_t pi_vb; /* PI valid bits */ uint32_t pi_ring_size; uint32_t pi_ci_mask; uint32_t ci; int available; uint32_t pend; uint32_t no_pfdr; } eqcr; }; /* Management routines. */ int dpaa2_swp_init_portal(struct dpaa2_swp **swp, struct dpaa2_swp_desc *desc, uint16_t flags); void dpaa2_swp_free_portal(struct dpaa2_swp *swp); uint32_t dpaa2_swp_set_cfg(uint8_t max_fill, uint8_t wn, uint8_t est, uint8_t rpm, uint8_t dcm, uint8_t epm, int sd, int sp, int se, int dp, int de, int ep); /* Read/write registers of a software portal. */ void dpaa2_swp_write_reg(struct dpaa2_swp *swp, uint32_t o, uint32_t v); uint32_t dpaa2_swp_read_reg(struct dpaa2_swp *swp, uint32_t o); /* Helper routines. */ void dpaa2_swp_set_ed_norp(struct dpaa2_eq_desc *ed, bool resp_always); void dpaa2_swp_set_ed_fq(struct dpaa2_eq_desc *ed, uint32_t fqid); void dpaa2_swp_set_intr_trigger(struct dpaa2_swp *swp, uint32_t mask); uint32_t dpaa2_swp_get_intr_trigger(struct dpaa2_swp *swp); uint32_t dpaa2_swp_read_intr_status(struct dpaa2_swp *swp); void dpaa2_swp_clear_intr_status(struct dpaa2_swp *swp, uint32_t mask); void dpaa2_swp_set_push_dequeue(struct dpaa2_swp *swp, uint8_t chan_idx, bool en); int dpaa2_swp_set_irq_coalescing(struct dpaa2_swp *swp, uint32_t threshold, uint32_t holdoff); /* Software portal commands. */ int dpaa2_swp_conf_wq_channel(struct dpaa2_swp *swp, uint16_t chan_id, uint8_t we_mask, bool cdan_en, uint64_t ctx); int dpaa2_swp_query_bp(struct dpaa2_swp *swp, uint16_t bpid, struct dpaa2_bp_conf *conf); int dpaa2_swp_release_bufs(struct dpaa2_swp *swp, uint16_t bpid, bus_addr_t *buf, uint32_t buf_num); int dpaa2_swp_dqrr_next_locked(struct dpaa2_swp *swp, struct dpaa2_dq *dq, uint32_t *idx); int dpaa2_swp_pull(struct dpaa2_swp *swp, uint16_t chan_id, struct dpaa2_buf *buf, uint32_t frames_n); int dpaa2_swp_enq(struct dpaa2_swp *swp, struct dpaa2_eq_desc *ed, struct dpaa2_fd *fd); int dpaa2_swp_enq_mult(struct dpaa2_swp *swp, struct dpaa2_eq_desc *ed, struct dpaa2_fd *fd, uint32_t *flags, int frames_n); #endif /* _DPAA2_SWP_H */