From f2835adf8afb2cea248dd10d6eb0444c34b3b51b Mon Sep 17 00:00:00 2001 From: Peng Ma Date: Mon, 30 Sep 2019 02:04:39 +0000 Subject: dmaengine: fsl-dpaa2-qdma: Add the DPDMAI(Data Path DMA Interface) support The MC(Management Complex) exports the DPDMAI(Data Path DMA Interface) object as an interface to operate the DPAA2(Data Path Acceleration Architecture 2) qDMA Engine. The DPDMAI enables sending frame-based requests to qDMA and receiving back confirmation response on transaction completion, utilizing the DPAA2 QBMan(Queue Manager and Buffer Manager hardware) infrastructure. DPDMAI object provides up to two priorities for processing qDMA requests. The following list summarizes the DPDMAI main features and capabilities: 1. Supports up to two scheduling priorities for processing service requests. - Each DPDMAI transmit queue is mapped to one of two service priorities, allowing further prioritization in hardware between requests from different DPDMAI objects. 2. Supports up to two receive queues for incoming transaction completion confirmations. - Each DPDMAI receive queue is mapped to one of two receive priorities, allowing further prioritization between other interfaces when associating the DPDMAI receive queues to DPIO or DPCON(Data Path Concentrator) objects. 3. Supports different scheduling options for processing received packets: - Queues can be configured either in 'parked' mode (default), or attached to a DPIO object, or attached to DPCON object. 4. Allows interaction with one or more DPIO objects for dequeueing/enqueueing frame descriptors(FD) and for acquiring/releasing buffers. 5. Supports enable, disable, and reset operations. Add dpdmai to support some platforms with dpaa2 qdma engine. Signed-off-by: Peng Ma Link: https://lore.kernel.org/r/20190930020440.7754-1-peng.ma@nxp.com Signed-off-by: Vinod Koul --- drivers/dma/fsl-dpaa2-qdma/dpdmai.h | 177 ++++++++++++++++++++++++++++++++++++ 1 file changed, 177 insertions(+) create mode 100644 drivers/dma/fsl-dpaa2-qdma/dpdmai.h (limited to 'drivers/dma/fsl-dpaa2-qdma/dpdmai.h') diff --git a/drivers/dma/fsl-dpaa2-qdma/dpdmai.h b/drivers/dma/fsl-dpaa2-qdma/dpdmai.h new file mode 100644 index 000000000000..6d785093da8e --- /dev/null +++ b/drivers/dma/fsl-dpaa2-qdma/dpdmai.h @@ -0,0 +1,177 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright 2019 NXP */ + +#ifndef __FSL_DPDMAI_H +#define __FSL_DPDMAI_H + +/* DPDMAI Version */ +#define DPDMAI_VER_MAJOR 2 +#define DPDMAI_VER_MINOR 2 + +#define DPDMAI_CMD_BASE_VERSION 0 +#define DPDMAI_CMD_ID_OFFSET 4 + +#define DPDMAI_CMDID_FORMAT(x) (((x) << DPDMAI_CMD_ID_OFFSET) | \ + DPDMAI_CMD_BASE_VERSION) + +/* Command IDs */ +#define DPDMAI_CMDID_CLOSE DPDMAI_CMDID_FORMAT(0x800) +#define DPDMAI_CMDID_OPEN DPDMAI_CMDID_FORMAT(0x80E) +#define DPDMAI_CMDID_CREATE DPDMAI_CMDID_FORMAT(0x90E) + +#define DPDMAI_CMDID_ENABLE DPDMAI_CMDID_FORMAT(0x002) +#define DPDMAI_CMDID_DISABLE DPDMAI_CMDID_FORMAT(0x003) +#define DPDMAI_CMDID_GET_ATTR DPDMAI_CMDID_FORMAT(0x004) +#define DPDMAI_CMDID_RESET DPDMAI_CMDID_FORMAT(0x005) +#define DPDMAI_CMDID_IS_ENABLED DPDMAI_CMDID_FORMAT(0x006) + +#define DPDMAI_CMDID_SET_IRQ DPDMAI_CMDID_FORMAT(0x010) +#define DPDMAI_CMDID_GET_IRQ DPDMAI_CMDID_FORMAT(0x011) +#define DPDMAI_CMDID_SET_IRQ_ENABLE DPDMAI_CMDID_FORMAT(0x012) +#define DPDMAI_CMDID_GET_IRQ_ENABLE DPDMAI_CMDID_FORMAT(0x013) +#define DPDMAI_CMDID_SET_IRQ_MASK DPDMAI_CMDID_FORMAT(0x014) +#define DPDMAI_CMDID_GET_IRQ_MASK DPDMAI_CMDID_FORMAT(0x015) +#define DPDMAI_CMDID_GET_IRQ_STATUS DPDMAI_CMDID_FORMAT(0x016) +#define DPDMAI_CMDID_CLEAR_IRQ_STATUS DPDMAI_CMDID_FORMAT(0x017) + +#define DPDMAI_CMDID_SET_RX_QUEUE DPDMAI_CMDID_FORMAT(0x1A0) +#define DPDMAI_CMDID_GET_RX_QUEUE DPDMAI_CMDID_FORMAT(0x1A1) +#define DPDMAI_CMDID_GET_TX_QUEUE DPDMAI_CMDID_FORMAT(0x1A2) + +#define MC_CMD_HDR_TOKEN_O 32 /* Token field offset */ +#define MC_CMD_HDR_TOKEN_S 16 /* Token field size */ + +#define MAKE_UMASK64(_width) \ + ((u64)((_width) < 64 ? ((u64)1 << (_width)) - 1 : (u64)-1)) + +/* Data Path DMA Interface API + * Contains initialization APIs and runtime control APIs for DPDMAI + */ + +/** + * Maximum number of Tx/Rx priorities per DPDMAI object + */ +#define DPDMAI_PRIO_NUM 2 + +/* DPDMAI queue modification options */ + +/** + * Select to modify the user's context associated with the queue + */ +#define DPDMAI_QUEUE_OPT_USER_CTX 0x1 + +/** + * Select to modify the queue's destination + */ +#define DPDMAI_QUEUE_OPT_DEST 0x2 + +/** + * struct dpdmai_cfg - Structure representing DPDMAI configuration + * @priorities: Priorities for the DMA hardware processing; valid priorities are + * configured with values 1-8; the entry following last valid entry + * should be configured with 0 + */ +struct dpdmai_cfg { + u8 priorities[DPDMAI_PRIO_NUM]; +}; + +/** + * struct dpdmai_attr - Structure representing DPDMAI attributes + * @id: DPDMAI object ID + * @version: DPDMAI version + * @num_of_priorities: number of priorities + */ +struct dpdmai_attr { + int id; + /** + * struct version - DPDMAI version + * @major: DPDMAI major version + * @minor: DPDMAI minor version + */ + struct { + u16 major; + u16 minor; + } version; + u8 num_of_priorities; +}; + +/** + * enum dpdmai_dest - DPDMAI destination types + * @DPDMAI_DEST_NONE: Unassigned destination; The queue is set in parked mode + * and does not generate FQDAN notifications; user is expected to dequeue + * from the queue based on polling or other user-defined method + * @DPDMAI_DEST_DPIO: The queue is set in schedule mode and generates FQDAN + * notifications to the specified DPIO; user is expected to dequeue + * from the queue only after notification is received + * @DPDMAI_DEST_DPCON: The queue is set in schedule mode and does not generate + * FQDAN notifications, but is connected to the specified DPCON object; + * user is expected to dequeue from the DPCON channel + */ +enum dpdmai_dest { + DPDMAI_DEST_NONE = 0, + DPDMAI_DEST_DPIO = 1, + DPDMAI_DEST_DPCON = 2 +}; + +/** + * struct dpdmai_dest_cfg - Structure representing DPDMAI destination parameters + * @dest_type: Destination type + * @dest_id: Either DPIO ID or DPCON ID, depending on the destination type + * @priority: Priority selection within the DPIO or DPCON channel; valid values + * are 0-1 or 0-7, depending on the number of priorities in that + * channel; not relevant for 'DPDMAI_DEST_NONE' option + */ +struct dpdmai_dest_cfg { + enum dpdmai_dest dest_type; + int dest_id; + u8 priority; +}; + +/** + * struct dpdmai_rx_queue_cfg - DPDMAI RX queue configuration + * @options: Flags representing the suggested modifications to the queue; + * Use any combination of 'DPDMAI_QUEUE_OPT_' flags + * @user_ctx: User context value provided in the frame descriptor of each + * dequeued frame; + * valid only if 'DPDMAI_QUEUE_OPT_USER_CTX' is contained in 'options' + * @dest_cfg: Queue destination parameters; + * valid only if 'DPDMAI_QUEUE_OPT_DEST' is contained in 'options' + */ +struct dpdmai_rx_queue_cfg { + struct dpdmai_dest_cfg dest_cfg; + u32 options; + u64 user_ctx; + +}; + +/** + * struct dpdmai_rx_queue_attr - Structure representing attributes of Rx queues + * @user_ctx: User context value provided in the frame descriptor of each + * dequeued frame + * @dest_cfg: Queue destination configuration + * @fqid: Virtual FQID value to be used for dequeue operations + */ +struct dpdmai_rx_queue_attr { + struct dpdmai_dest_cfg dest_cfg; + u64 user_ctx; + u32 fqid; +}; + +int dpdmai_open(struct fsl_mc_io *mc_io, u32 cmd_flags, + int dpdmai_id, u16 *token); +int dpdmai_close(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token); +int dpdmai_create(struct fsl_mc_io *mc_io, u32 cmd_flags, + const struct dpdmai_cfg *cfg, u16 *token); +int dpdmai_enable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token); +int dpdmai_disable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token); +int dpdmai_reset(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token); +int dpdmai_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags, + u16 token, struct dpdmai_attr *attr); +int dpdmai_set_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, + u8 priority, const struct dpdmai_rx_queue_cfg *cfg); +int dpdmai_get_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token, + u8 priority, struct dpdmai_rx_queue_attr *attr); +int dpdmai_get_tx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, + u16 token, u8 priority, u32 *fqid); + +#endif /* __FSL_DPDMAI_H */ -- cgit v1.2.3-59-g8ed1b