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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
*
* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#ifndef QAIC_ACCEL_H_
#define QAIC_ACCEL_H_
#include "drm.h"
#if defined(__cplusplus)
extern "C" {
#endif
/* The length(4K) includes len and count fields of qaic_manage_msg */
#define QAIC_MANAGE_MAX_MSG_LENGTH SZ_4K
/* semaphore flags */
#define QAIC_SEM_INSYNCFENCE 2
#define QAIC_SEM_OUTSYNCFENCE 1
/* Semaphore commands */
#define QAIC_SEM_NOP 0
#define QAIC_SEM_INIT 1
#define QAIC_SEM_INC 2
#define QAIC_SEM_DEC 3
#define QAIC_SEM_WAIT_EQUAL 4
#define QAIC_SEM_WAIT_GT_EQ 5 /* Greater than or equal */
#define QAIC_SEM_WAIT_GT_0 6 /* Greater than 0 */
#define QAIC_TRANS_UNDEFINED 0
#define QAIC_TRANS_PASSTHROUGH_FROM_USR 1
#define QAIC_TRANS_PASSTHROUGH_TO_USR 2
#define QAIC_TRANS_PASSTHROUGH_FROM_DEV 3
#define QAIC_TRANS_PASSTHROUGH_TO_DEV 4
#define QAIC_TRANS_DMA_XFER_FROM_USR 5
#define QAIC_TRANS_DMA_XFER_TO_DEV 6
#define QAIC_TRANS_ACTIVATE_FROM_USR 7
#define QAIC_TRANS_ACTIVATE_FROM_DEV 8
#define QAIC_TRANS_ACTIVATE_TO_DEV 9
#define QAIC_TRANS_DEACTIVATE_FROM_USR 10
#define QAIC_TRANS_DEACTIVATE_FROM_DEV 11
#define QAIC_TRANS_STATUS_FROM_USR 12
#define QAIC_TRANS_STATUS_TO_USR 13
#define QAIC_TRANS_STATUS_FROM_DEV 14
#define QAIC_TRANS_STATUS_TO_DEV 15
#define QAIC_TRANS_TERMINATE_FROM_DEV 16
#define QAIC_TRANS_TERMINATE_TO_DEV 17
#define QAIC_TRANS_DMA_XFER_CONT 18
#define QAIC_TRANS_VALIDATE_PARTITION_FROM_DEV 19
#define QAIC_TRANS_VALIDATE_PARTITION_TO_DEV 20
/**
* struct qaic_manage_trans_hdr - Header for a transaction in a manage message.
* @type: In. Identifies this transaction. See QAIC_TRANS_* defines.
* @len: In. Length of this transaction, including this header.
*/
struct qaic_manage_trans_hdr {
__u32 type;
__u32 len;
};
/**
* struct qaic_manage_trans_passthrough - Defines a passthrough transaction.
* @hdr: In. Header to identify this transaction.
* @data: In. Payload of this ransaction. Opaque to the driver. Userspace must
* encode in little endian and align/pad to 64-bit.
*/
struct qaic_manage_trans_passthrough {
struct qaic_manage_trans_hdr hdr;
__u8 data[];
};
/**
* struct qaic_manage_trans_dma_xfer - Defines a DMA transfer transaction.
* @hdr: In. Header to identify this transaction.
* @tag: In. Identified this transfer in other transactions. Opaque to the
* driver.
* @pad: Structure padding.
* @addr: In. Address of the data to DMA to the device.
* @size: In. Length of the data to DMA to the device.
*/
struct qaic_manage_trans_dma_xfer {
struct qaic_manage_trans_hdr hdr;
__u32 tag;
__u32 pad;
__u64 addr;
__u64 size;
};
/**
* struct qaic_manage_trans_activate_to_dev - Defines an activate request.
* @hdr: In. Header to identify this transaction.
* @queue_size: In. Number of elements for DBC request and response queues.
* @eventfd: Unused.
* @options: In. Device specific options for this activate.
* @pad: Structure padding. Must be 0.
*/
struct qaic_manage_trans_activate_to_dev {
struct qaic_manage_trans_hdr hdr;
__u32 queue_size;
__u32 eventfd;
__u32 options;
__u32 pad;
};
/**
* struct qaic_manage_trans_activate_from_dev - Defines an activate response.
* @hdr: Out. Header to identify this transaction.
* @status: Out. Return code of the request from the device.
* @dbc_id: Out. Id of the assigned DBC for successful request.
* @options: Out. Device specific options for this activate.
*/
struct qaic_manage_trans_activate_from_dev {
struct qaic_manage_trans_hdr hdr;
__u32 status;
__u32 dbc_id;
__u64 options;
};
/**
* struct qaic_manage_trans_deactivate - Defines a deactivate request.
* @hdr: In. Header to identify this transaction.
* @dbc_id: In. Id of assigned DBC.
* @pad: Structure padding. Must be 0.
*/
struct qaic_manage_trans_deactivate {
struct qaic_manage_trans_hdr hdr;
__u32 dbc_id;
__u32 pad;
};
/**
* struct qaic_manage_trans_status_to_dev - Defines a status request.
* @hdr: In. Header to identify this transaction.
*/
struct qaic_manage_trans_status_to_dev {
struct qaic_manage_trans_hdr hdr;
};
/**
* struct qaic_manage_trans_status_from_dev - Defines a status response.
* @hdr: Out. Header to identify this transaction.
* @major: Out. NNC protocol version major number.
* @minor: Out. NNC protocol version minor number.
* @status: Out. Return code from device.
* @status_flags: Out. Flags from device. Bit 0 indicates if CRCs are required.
*/
struct qaic_manage_trans_status_from_dev {
struct qaic_manage_trans_hdr hdr;
__u16 major;
__u16 minor;
__u32 status;
__u64 status_flags;
};
/**
* struct qaic_manage_msg - Defines a message to the device.
* @len: In. Length of all the transactions contained within this message.
* @count: In. Number of transactions in this message.
* @data: In. Address to an array where the transactions can be found.
*/
struct qaic_manage_msg {
__u32 len;
__u32 count;
__u64 data;
};
/**
* struct qaic_create_bo - Defines a request to create a buffer object.
* @size: In. Size of the buffer in bytes.
* @handle: Out. GEM handle for the BO.
* @pad: Structure padding. Must be 0.
*/
struct qaic_create_bo {
__u64 size;
__u32 handle;
__u32 pad;
};
/**
* struct qaic_mmap_bo - Defines a request to prepare a BO for mmap().
* @handle: In. Handle of the GEM BO to prepare for mmap().
* @pad: Structure padding. Must be 0.
* @offset: Out. Offset value to provide to mmap().
*/
struct qaic_mmap_bo {
__u32 handle;
__u32 pad;
__u64 offset;
};
/**
* struct qaic_sem - Defines a semaphore command for a BO slice.
* @val: In. Only lower 12 bits are valid.
* @index: In. Only lower 5 bits are valid.
* @presync: In. 1 if presync operation, 0 if postsync.
* @cmd: In. One of QAIC_SEM_*.
* @flags: In. Bitfield. See QAIC_SEM_INSYNCFENCE and QAIC_SEM_OUTSYNCFENCE
* @pad: Structure padding. Must be 0.
*/
struct qaic_sem {
__u16 val;
__u8 index;
__u8 presync;
__u8 cmd;
__u8 flags;
__u16 pad;
};
/**
* struct qaic_attach_slice_entry - Defines a single BO slice.
* @size: In. Size of this slice in bytes.
* @sem0: In. Semaphore command 0. Must be 0 is not valid.
* @sem1: In. Semaphore command 1. Must be 0 is not valid.
* @sem2: In. Semaphore command 2. Must be 0 is not valid.
* @sem3: In. Semaphore command 3. Must be 0 is not valid.
* @dev_addr: In. Device address this slice pushes to or pulls from.
* @db_addr: In. Address of the doorbell to ring.
* @db_data: In. Data to write to the doorbell.
* @db_len: In. Size of the doorbell data in bits - 32, 16, or 8. 0 is for
* inactive doorbells.
* @offset: In. Start of this slice as an offset from the start of the BO.
*/
struct qaic_attach_slice_entry {
__u64 size;
struct qaic_sem sem0;
struct qaic_sem sem1;
struct qaic_sem sem2;
struct qaic_sem sem3;
__u64 dev_addr;
__u64 db_addr;
__u32 db_data;
__u32 db_len;
__u64 offset;
};
/**
* struct qaic_attach_slice_hdr - Defines metadata for a set of BO slices.
* @count: In. Number of slices for this BO.
* @dbc_id: In. Associate the sliced BO with this DBC.
* @handle: In. GEM handle of the BO to slice.
* @dir: In. Direction of data flow. 1 = DMA_TO_DEVICE, 2 = DMA_FROM_DEVICE
* @size: In. Total length of BO being used. This should not exceed base
* size of BO (struct drm_gem_object.base)
* For BOs being allocated using DRM_IOCTL_QAIC_CREATE_BO, size of
* BO requested is PAGE_SIZE aligned then allocated hence allocated
* BO size maybe bigger. This size should not exceed the new
* PAGE_SIZE aligned BO size.
* @dev_addr: In. Device address this slice pushes to or pulls from.
* @db_addr: In. Address of the doorbell to ring.
* @db_data: In. Data to write to the doorbell.
* @db_len: In. Size of the doorbell data in bits - 32, 16, or 8. 0 is for
* inactive doorbells.
* @offset: In. Start of this slice as an offset from the start of the BO.
*/
struct qaic_attach_slice_hdr {
__u32 count;
__u32 dbc_id;
__u32 handle;
__u32 dir;
__u64 size;
};
/**
* struct qaic_attach_slice - Defines a set of BO slices.
* @hdr: In. Metadata of the set of slices.
* @data: In. Pointer to an array containing the slice definitions.
*/
struct qaic_attach_slice {
struct qaic_attach_slice_hdr hdr;
__u64 data;
};
/**
* struct qaic_execute_entry - Defines a BO to submit to the device.
* @handle: In. GEM handle of the BO to commit to the device.
* @dir: In. Direction of data. 1 = to device, 2 = from device.
*/
struct qaic_execute_entry {
__u32 handle;
__u32 dir;
};
/**
* struct qaic_partial_execute_entry - Defines a BO to resize and submit.
* @handle: In. GEM handle of the BO to commit to the device.
* @dir: In. Direction of data. 1 = to device, 2 = from device.
* @resize: In. New size of the BO. Must be <= the original BO size.
* @resize as 0 would be interpreted as no DMA transfer is
* involved.
*/
struct qaic_partial_execute_entry {
__u32 handle;
__u32 dir;
__u64 resize;
};
/**
* struct qaic_execute_hdr - Defines metadata for BO submission.
* @count: In. Number of BOs to submit.
* @dbc_id: In. DBC to submit the BOs on.
*/
struct qaic_execute_hdr {
__u32 count;
__u32 dbc_id;
};
/**
* struct qaic_execute - Defines a list of BOs to submit to the device.
* @hdr: In. BO list metadata.
* @data: In. Pointer to an array of BOs to submit.
*/
struct qaic_execute {
struct qaic_execute_hdr hdr;
__u64 data;
};
/**
* struct qaic_wait - Defines a blocking wait for BO execution.
* @handle: In. GEM handle of the BO to wait on.
* @timeout: In. Maximum time in ms to wait for the BO.
* @dbc_id: In. DBC the BO is submitted to.
* @pad: Structure padding. Must be 0.
*/
struct qaic_wait {
__u32 handle;
__u32 timeout;
__u32 dbc_id;
__u32 pad;
};
/**
* struct qaic_perf_stats_hdr - Defines metadata for getting BO perf info.
* @count: In. Number of BOs requested.
* @pad: Structure padding. Must be 0.
* @dbc_id: In. DBC the BO are associated with.
*/
struct qaic_perf_stats_hdr {
__u16 count;
__u16 pad;
__u32 dbc_id;
};
/**
* struct qaic_perf_stats - Defines a request for getting BO perf info.
* @hdr: In. Request metadata
* @data: In. Pointer to array of stats structures that will receive the data.
*/
struct qaic_perf_stats {
struct qaic_perf_stats_hdr hdr;
__u64 data;
};
/**
* struct qaic_perf_stats_entry - Defines a BO perf info.
* @handle: In. GEM handle of the BO to get perf stats for.
* @queue_level_before: Out. Number of elements in the queue before this BO
* was submitted.
* @num_queue_element: Out. Number of elements added to the queue to submit
* this BO.
* @submit_latency_us: Out. Time taken by the driver to submit this BO.
* @device_latency_us: Out. Time taken by the device to execute this BO.
* @pad: Structure padding. Must be 0.
*/
struct qaic_perf_stats_entry {
__u32 handle;
__u32 queue_level_before;
__u32 num_queue_element;
__u32 submit_latency_us;
__u32 device_latency_us;
__u32 pad;
};
/**
* struct qaic_detach_slice - Detaches slicing configuration from BO.
* @handle: In. GEM handle of the BO to detach slicing configuration.
* @pad: Structure padding. Must be 0.
*/
struct qaic_detach_slice {
__u32 handle;
__u32 pad;
};
#define DRM_QAIC_MANAGE 0x00
#define DRM_QAIC_CREATE_BO 0x01
#define DRM_QAIC_MMAP_BO 0x02
#define DRM_QAIC_ATTACH_SLICE_BO 0x03
#define DRM_QAIC_EXECUTE_BO 0x04
#define DRM_QAIC_PARTIAL_EXECUTE_BO 0x05
#define DRM_QAIC_WAIT_BO 0x06
#define DRM_QAIC_PERF_STATS_BO 0x07
#define DRM_QAIC_DETACH_SLICE_BO 0x08
#define DRM_IOCTL_QAIC_MANAGE DRM_IOWR(DRM_COMMAND_BASE + DRM_QAIC_MANAGE, struct qaic_manage_msg)
#define DRM_IOCTL_QAIC_CREATE_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_QAIC_CREATE_BO, struct qaic_create_bo)
#define DRM_IOCTL_QAIC_MMAP_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_QAIC_MMAP_BO, struct qaic_mmap_bo)
#define DRM_IOCTL_QAIC_ATTACH_SLICE_BO DRM_IOW(DRM_COMMAND_BASE + DRM_QAIC_ATTACH_SLICE_BO, struct qaic_attach_slice)
#define DRM_IOCTL_QAIC_EXECUTE_BO DRM_IOW(DRM_COMMAND_BASE + DRM_QAIC_EXECUTE_BO, struct qaic_execute)
#define DRM_IOCTL_QAIC_PARTIAL_EXECUTE_BO DRM_IOW(DRM_COMMAND_BASE + DRM_QAIC_PARTIAL_EXECUTE_BO, struct qaic_execute)
#define DRM_IOCTL_QAIC_WAIT_BO DRM_IOW(DRM_COMMAND_BASE + DRM_QAIC_WAIT_BO, struct qaic_wait)
#define DRM_IOCTL_QAIC_PERF_STATS_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_QAIC_PERF_STATS_BO, struct qaic_perf_stats)
#define DRM_IOCTL_QAIC_DETACH_SLICE_BO DRM_IOW(DRM_COMMAND_BASE + DRM_QAIC_DETACH_SLICE_BO, struct qaic_detach_slice)
#if defined(__cplusplus)
}
#endif
#endif /* QAIC_ACCEL_H_ */