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freebsd-src/sys/dev/dpaa2/dpaa2_swp.h
Dmitry Salychev 58983e4b02
dpaa2: Clean up channels in separate tasks 
Each channel gets its own DMA resources, cleanup and "bufferpool"
tasks, and a separate cleanup taskqueue to isolate channels operation
as much as possible to avoid various kernel panics under heavy network
load.

As a side-effect of this work, dpaa2_buf structure is simplified and
all of the functions to re-seed those buffers are gathered now in
dpaa2_buf.h and .c files; functions to work with channels are
extracted into dpaa2_channel.h and .c files as well.

Reported by:		dch
Reviewed by:		bz
Approved by:		bz (mentor)
MFC after:		1 week
Differential Revision:	https://reviews.freebsd.org/D41296
2023-08-20 10:17:26 +02:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright © 2021-2023 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 <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include "dpaa2_types.h"
#include "dpaa2_buf.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 */
#define DPAA2_EQ_DESC_SIZE 32u /* Enqueue Command Descriptor */
#define DPAA2_FDR_DESC_SIZE 32u /* Descriptor of the FDR */
#define DPAA2_FD_SIZE 32u /* Frame Descriptor */
#define DPAA2_FDR_SIZE 64u /* Frame Dequeue Response */
#define DPAA2_SCN_SIZE 16u /* State Change Notification */
#define DPAA2_FA_SIZE 64u /* SW Frame Annotation */
#define DPAA2_SGE_SIZE 16u /* S/G table entry */
#define DPAA2_DQ_SIZE 64u /* Dequeue Response */
#define DPAA2_SWP_CMD_SIZE 64u /* SWP Command */
#define DPAA2_SWP_RSP_SIZE 64u /* SWP Command Response */
/* 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.
*/
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;
CTASSERT(sizeof(struct dpaa2_eq_desc) == DPAA2_EQ_DESC_SIZE);
/**
* @brief Frame Dequeue Response (FDR) descriptor.
*/
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;
CTASSERT(sizeof(struct dpaa2_fdr_desc) == DPAA2_FDR_DESC_SIZE);
/**
* @brief State Change Notification Message (SCNM).
*/
struct dpaa2_scn {
uint8_t verb;
uint8_t stat;
uint8_t state;
uint8_t _reserved;
uint32_t rid_tok;
uint64_t ctx;
} __packed;
CTASSERT(sizeof(struct dpaa2_scn) == DPAA2_SCN_SIZE);
/**
* @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.
*/
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;
CTASSERT(sizeof(struct dpaa2_fd) == DPAA2_FD_SIZE);
/**
* @brief DPAA2 frame annotation.
*/
struct dpaa2_fa {
uint32_t magic;
struct dpaa2_buf *buf;
#ifdef __notyet__
union {
struct { /* Tx frame annotation */
struct dpaa2_ni_tx_ring *tx;
};
struct { /* Rx frame annotation */
uint64_t _notused;
};
};
#endif
} __packed;
CTASSERT(sizeof(struct dpaa2_fa) <= DPAA2_FA_SIZE);
/**
* @brief DPAA2 scatter/gather entry.
*/
struct dpaa2_sg_entry {
uint64_t addr;
uint32_t len;
uint16_t bpid;
uint16_t offset_fmt;
} __packed;
CTASSERT(sizeof(struct dpaa2_sg_entry) == DPAA2_SGE_SIZE);
/**
* @brief Frame Dequeue Response (FDR).
*/
struct dpaa2_fdr {
struct dpaa2_fdr_desc desc;
struct dpaa2_fd fd;
} __packed;
CTASSERT(sizeof(struct dpaa2_fdr) == DPAA2_FDR_SIZE);
/**
* @brief Dequeue Response Message.
*/
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;
CTASSERT(sizeof(struct dpaa2_dq) == DPAA2_DQ_SIZE);
/**
* @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];
};
CTASSERT(sizeof(struct dpaa2_swp_cmd) == DPAA2_SWP_CMD_SIZE);
/**
* @brief Command response holds data received from the software portal.
*/
struct dpaa2_swp_rsp {
uint64_t params[DPAA2_SWP_RSP_PARAMS_N];
};
CTASSERT(sizeof(struct dpaa2_swp_rsp) == DPAA2_SWP_RSP_SIZE);
/**
* @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 */
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