| /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ |
| /* |
| * Copyright 2014-2016 Freescale Semiconductor Inc. |
| * Copyright NXP |
| * |
| */ |
| #ifndef __FSL_DPAA2_IO_H |
| #define __FSL_DPAA2_IO_H |
| |
| #include <linux/types.h> |
| #include <linux/cpumask.h> |
| #include <linux/irqreturn.h> |
| |
| #include "dpaa2-fd.h" |
| #include "dpaa2-global.h" |
| |
| struct dpaa2_io; |
| struct dpaa2_io_store; |
| struct device; |
| |
| /** |
| * DOC: DPIO Service |
| * |
| * The DPIO service provides APIs for users to interact with the datapath |
| * by enqueueing and dequeing frame descriptors. |
| * |
| * The following set of APIs can be used to enqueue and dequeue frames |
| * as well as producing notification callbacks when data is available |
| * for dequeue. |
| */ |
| |
| #define DPAA2_IO_ANY_CPU -1 |
| |
| /** |
| * struct dpaa2_io_desc - The DPIO descriptor |
| * @receives_notifications: Use notificaton mode. Non-zero if the DPIO |
| * has a channel. |
| * @has_8prio: Set to non-zero for channel with 8 priority WQs. Ignored |
| * unless receives_notification is TRUE. |
| * @cpu: The cpu index that at least interrupt handlers will |
| * execute on. |
| * @stash_affinity: The stash affinity for this portal favour 'cpu' |
| * @regs_cena: The cache enabled regs. |
| * @regs_cinh: The cache inhibited regs |
| * @dpio_id: The dpio index |
| * @qman_version: The qman version |
| * |
| * Describes the attributes and features of the DPIO object. |
| */ |
| struct dpaa2_io_desc { |
| int receives_notifications; |
| int has_8prio; |
| int cpu; |
| void *regs_cena; |
| void *regs_cinh; |
| int dpio_id; |
| u32 qman_version; |
| }; |
| |
| struct dpaa2_io *dpaa2_io_create(const struct dpaa2_io_desc *desc); |
| |
| void dpaa2_io_down(struct dpaa2_io *d); |
| |
| irqreturn_t dpaa2_io_irq(struct dpaa2_io *obj); |
| |
| struct dpaa2_io *dpaa2_io_service_select(int cpu); |
| |
| /** |
| * struct dpaa2_io_notification_ctx - The DPIO notification context structure |
| * @cb: The callback to be invoked when the notification arrives |
| * @is_cdan: Zero for FQDAN, non-zero for CDAN |
| * @id: FQID or channel ID, needed for rearm |
| * @desired_cpu: The cpu on which the notifications will show up. Use |
| * DPAA2_IO_ANY_CPU if don't care |
| * @dpio_id: The dpio index |
| * @qman64: The 64-bit context value shows up in the FQDAN/CDAN. |
| * @node: The list node |
| * @dpio_private: The dpio object internal to dpio_service |
| * |
| * Used when a FQDAN/CDAN registration is made by drivers. |
| */ |
| struct dpaa2_io_notification_ctx { |
| void (*cb)(struct dpaa2_io_notification_ctx *ctx); |
| int is_cdan; |
| u32 id; |
| int desired_cpu; |
| int dpio_id; |
| u64 qman64; |
| struct list_head node; |
| void *dpio_private; |
| }; |
| |
| int dpaa2_io_service_register(struct dpaa2_io *service, |
| struct dpaa2_io_notification_ctx *ctx); |
| void dpaa2_io_service_deregister(struct dpaa2_io *service, |
| struct dpaa2_io_notification_ctx *ctx); |
| int dpaa2_io_service_rearm(struct dpaa2_io *service, |
| struct dpaa2_io_notification_ctx *ctx); |
| |
| int dpaa2_io_service_pull_channel(struct dpaa2_io *d, u32 channelid, |
| struct dpaa2_io_store *s); |
| |
| int dpaa2_io_service_enqueue_qd(struct dpaa2_io *d, u32 qdid, u8 prio, |
| u16 qdbin, const struct dpaa2_fd *fd); |
| int dpaa2_io_service_release(struct dpaa2_io *d, u32 bpid, |
| const u64 *buffers, unsigned int num_buffers); |
| int dpaa2_io_service_acquire(struct dpaa2_io *d, u32 bpid, |
| u64 *buffers, unsigned int num_buffers); |
| |
| struct dpaa2_io_store *dpaa2_io_store_create(unsigned int max_frames, |
| struct device *dev); |
| void dpaa2_io_store_destroy(struct dpaa2_io_store *s); |
| struct dpaa2_dq *dpaa2_io_store_next(struct dpaa2_io_store *s, int *is_last); |
| |
| #endif /* __FSL_DPAA2_IO_H */ |