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 17 struct dpaa2_io; 18 struct dpaa2_io_store; 19 struct 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 */ 50 struct 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 60 struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc, 61 struct device *dev); 62 63 void dpaa2_io_down(struct dpaa2_io *d); 64 65 irqreturn_t dpaa2_io_irq(struct dpaa2_io *obj); 66 67 struct dpaa2_io *dpaa2_io_service_select(int cpu); 68 69 /** 70 * struct dpaa2_io_notification_ctx - The DPIO notification context structure 71 * @cb: The callback to be invoked when the notification arrives 72 * @is_cdan: Zero for FQDAN, non-zero for CDAN 73 * @id: FQID or channel ID, needed for rearm 74 * @desired_cpu: The cpu on which the notifications will show up. Use 75 * DPAA2_IO_ANY_CPU if don't care 76 * @dpio_id: The dpio index 77 * @qman64: The 64-bit context value shows up in the FQDAN/CDAN. 78 * @node: The list node 79 * @dpio_private: The dpio object internal to dpio_service 80 * 81 * Used when a FQDAN/CDAN registration is made by drivers. 82 */ 83 struct dpaa2_io_notification_ctx { 84 void (*cb)(struct dpaa2_io_notification_ctx *ctx); 85 int is_cdan; 86 u32 id; 87 int desired_cpu; 88 int dpio_id; 89 u64 qman64; 90 struct list_head node; 91 void *dpio_private; 92 }; 93 94 int dpaa2_io_get_cpu(struct dpaa2_io *d); 95 96 int dpaa2_io_service_register(struct dpaa2_io *service, 97 struct dpaa2_io_notification_ctx *ctx, 98 struct device *dev); 99 void dpaa2_io_service_deregister(struct dpaa2_io *service, 100 struct dpaa2_io_notification_ctx *ctx, 101 struct device *dev); 102 int dpaa2_io_service_rearm(struct dpaa2_io *service, 103 struct dpaa2_io_notification_ctx *ctx); 104 105 int dpaa2_io_service_pull_fq(struct dpaa2_io *d, u32 fqid, 106 struct dpaa2_io_store *s); 107 int dpaa2_io_service_pull_channel(struct dpaa2_io *d, u32 channelid, 108 struct dpaa2_io_store *s); 109 110 int dpaa2_io_service_enqueue_fq(struct dpaa2_io *d, u32 fqid, 111 const struct dpaa2_fd *fd); 112 int dpaa2_io_service_enqueue_qd(struct dpaa2_io *d, u32 qdid, u8 prio, 113 u16 qdbin, const struct dpaa2_fd *fd); 114 int dpaa2_io_service_release(struct dpaa2_io *d, u16 bpid, 115 const u64 *buffers, unsigned int num_buffers); 116 int dpaa2_io_service_acquire(struct dpaa2_io *d, u16 bpid, 117 u64 *buffers, unsigned int num_buffers); 118 119 struct dpaa2_io_store *dpaa2_io_store_create(unsigned int max_frames, 120 struct device *dev); 121 void dpaa2_io_store_destroy(struct dpaa2_io_store *s); 122 struct dpaa2_dq *dpaa2_io_store_next(struct dpaa2_io_store *s, int *is_last); 123 124 int dpaa2_io_query_fq_count(struct dpaa2_io *d, u32 fqid, 125 u32 *fcnt, u32 *bcnt); 126 int dpaa2_io_query_bp_count(struct dpaa2_io *d, u16 bpid, 127 u32 *num); 128 #endif /* __FSL_DPAA2_IO_H */ 129