LXR linux/include/soc/fsl/dpaa2-io.h

   1/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
   2/*
   3 * Copyright 2014-2016 Freescale Semiconductor Inc.
   4 * Copyright NXP
   5 *
   6 */
   7#ifndef __FSL_DPAA2_IO_H
   8#define __FSL_DPAA2_IO_H
   9
  10#include <linux/types.h>
  11#include <linux/cpumask.h>
  12#include <linux/irqreturn.h>
  13
  14#include "dpaa2-fd.h"
  15#include "dpaa2-global.h"
  16
  17struct dpaa2_io;
  18struct dpaa2_io_store;
  19struct device;
  20
  21/**
  22 * DOC: DPIO Service
  23 *
  24 * The DPIO service provides APIs for users to interact with the datapath
  25 * by enqueueing and dequeing frame descriptors.
  26 *
  27 * The following set of APIs can be used to enqueue and dequeue frames
  28 * as well as producing notification callbacks when data is available
  29 * for dequeue.
  30 */
  31
  32#define DPAA2_IO_ANY_CPU        -1
  33
  34/**
  35 * struct dpaa2_io_desc - The DPIO descriptor
  36 * @receives_notifications: Use notificaton mode. Non-zero if the DPIO
  37 *                  has a channel.
  38 * @has_8prio:      Set to non-zero for channel with 8 priority WQs.  Ignored
  39 *                  unless receives_notification is TRUE.
  40 * @cpu:            The cpu index that at least interrupt handlers will
  41 *                  execute on.
  42 * @stash_affinity: The stash affinity for this portal favour 'cpu'
  43 * @regs_cena:      The cache enabled regs.
  44 * @regs_cinh:      The cache inhibited regs
  45 * @dpio_id:        The dpio index
  46 * @qman_version:   The qman version
  47 *
  48 * Describes the attributes and features of the DPIO object.
  49 */
  50struct dpaa2_io_desc {
  51        int receives_notifications;
  52        int has_8prio;
  53        int cpu;
  54        void *regs_cena;
  55        void __iomem *regs_cinh;
  56        int dpio_id;
  57        u32 qman_version;
  58};
  59
  60struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc);
  61
  62void dpaa2_io_down(struct dpaa2_io *d);
  63
  64irqreturn_t dpaa2_io_irq(struct dpaa2_io *obj);
  65
  66struct dpaa2_io *dpaa2_io_service_select(int cpu);
  67
  68/**
  69 * struct dpaa2_io_notification_ctx - The DPIO notification context structure
  70 * @cb:           The callback to be invoked when the notification arrives
  71 * @is_cdan:      Zero for FQDAN, non-zero for CDAN
  72 * @id:           FQID or channel ID, needed for rearm
  73 * @desired_cpu:  The cpu on which the notifications will show up. Use
  74 *                DPAA2_IO_ANY_CPU if don't care
  75 * @dpio_id:      The dpio index
  76 * @qman64:       The 64-bit context value shows up in the FQDAN/CDAN.
  77 * @node:         The list node
  78 * @dpio_private: The dpio object internal to dpio_service
  79 *
  80 * Used when a FQDAN/CDAN registration is made by drivers.
  81 */
  82struct dpaa2_io_notification_ctx {
  83        void (*cb)(struct dpaa2_io_notification_ctx *ctx);
  84        int is_cdan;
  85        u32 id;
  86        int desired_cpu;
  87        int dpio_id;
  88        u64 qman64;
  89        struct list_head node;
  90        void *dpio_private;
  91};
  92
  93int dpaa2_io_service_register(struct dpaa2_io *service,
  94                              struct dpaa2_io_notification_ctx *ctx);
  95void dpaa2_io_service_deregister(struct dpaa2_io *service,
  96                                 struct dpaa2_io_notification_ctx *ctx);
  97int dpaa2_io_service_rearm(struct dpaa2_io *service,
  98                           struct dpaa2_io_notification_ctx *ctx);
  99
 100int dpaa2_io_service_pull_fq(struct dpaa2_io *d, u32 fqid,
 101                             struct dpaa2_io_store *s);
 102int dpaa2_io_service_pull_channel(struct dpaa2_io *d, u32 channelid,
 103                                  struct dpaa2_io_store *s);
 104
 105int dpaa2_io_service_enqueue_fq(struct dpaa2_io *d, u32 fqid,
 106                                const struct dpaa2_fd *fd);
 107int dpaa2_io_service_enqueue_qd(struct dpaa2_io *d, u32 qdid, u8 prio,
 108                                u16 qdbin, const struct dpaa2_fd *fd);
 109int dpaa2_io_service_release(struct dpaa2_io *d, u32 bpid,
 110                             const u64 *buffers, unsigned int num_buffers);
 111int dpaa2_io_service_acquire(struct dpaa2_io *d, u32 bpid,
 112                             u64 *buffers, unsigned int num_buffers);
 113
 114struct dpaa2_io_store *dpaa2_io_store_create(unsigned int max_frames,
 115                                             struct device *dev);
 116void dpaa2_io_store_destroy(struct dpaa2_io_store *s);
 117struct dpaa2_dq *dpaa2_io_store_next(struct dpaa2_io_store *s, int *is_last);
 118
 119int dpaa2_io_query_fq_count(struct dpaa2_io *d, u32 fqid,
 120                            u32 *fcnt, u32 *bcnt);
 121int dpaa2_io_query_bp_count(struct dpaa2_io *d, u16 bpid,
 122                            u32 *num);
 123#endif /* __FSL_DPAA2_IO_H */
 124