d076f02017
Linux message queues(msgq) are used to communicate between VM's This change creates a display specific msgq and a set of framework api's for the VM layer to invoke communication between the VMs'. Display msgq is bidirectional. Tx end is created by default for both the VM's. Rx is kept optional to avoid unnecessary creation of listener threads. Change-Id: If4e6410045293d6b21087a76ec018d4784dd5238 Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
99 行
2.9 KiB
C
99 行
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2020, The Linux Foundation. All rights reserved.
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*/
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#ifndef __SDE_VM_COMMON_H__
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#define __SDE_VM_COMMON_H__
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#include <linux/haven/hh_rm_drv.h>
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#include "sde_vm.h"
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#define SDE_VM_MEM_LABEL 0x11
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/**
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* sde_vm_populate_vmid - create and populate the rm vmid desc structure with
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* the given vmid
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* @vmid: vmid of the destination vm
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* @return: populated hh_notify_vmid_desc structure
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*/
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struct hh_notify_vmid_desc *sde_vm_populate_vmid(hh_vmid_t vmid);
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/**
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* sde_vm_populate_acl - create and populate the access control list structure
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* for the given vm name
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* @vm_name: vm name enum published by the RM driver
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* @return: populated hh_acl_desc structure
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*/
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struct hh_acl_desc *sde_vm_populate_acl(enum hh_vm_names vm_name);
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/**
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* sde_vm_populate_sgl - create and populate the scatter/gather list structure
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* with the given io memory list
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* @io_res: io resource list containing the io memory
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* @return: populated hh_sgl_desc structure
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*/
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struct hh_sgl_desc *sde_vm_populate_sgl(struct msm_io_res *io_res);
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/**
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* sde_vm_populate_irq - create and populate the hw irq descriptor structure
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* with the given hw irq lines
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* @io_res: io resource list containing the irq numbers
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* @return: populated sde_vm_irq_desc structure
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*/
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struct sde_vm_irq_desc *sde_vm_populate_irq(struct msm_io_res *io_res);
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/**
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* sde_vm_free_irq - free up the irq description structure
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* @irq_desc: handle to irq descriptor
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*/
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void sde_vm_free_irq(struct sde_vm_irq_desc *irq_desc);
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/**
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* sde_vm_get_resources - collect io resource from all the VM clients
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* @sde_kms: handle to sde_kms
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* @io_res: pointer to msm_io_res structure to populate the resources
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* @return: 0 on success.
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*/
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int sde_vm_get_resources(struct sde_kms *sde_kms, struct msm_io_res *io_res);
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/**
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* sde_vm_free_resources - free up the io resource list
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* @io_res: pointer to msm_io_res structure
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*/
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void sde_vm_free_resources(struct msm_io_res *io_res);
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/**
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* sde_vm_post_acquire - handle post_acquire events with all the VM clients
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* @kms: handle to sde_kms
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*/
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int sde_vm_post_acquire(struct sde_kms *kms);
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/**
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* sde_vm_pre_release - handle pre_release events with all the VM clients
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* @kms: handle to sde_kms
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*/
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int sde_vm_pre_release(struct sde_kms *kms);
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/**
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* sde_vm_request_valid - check the validity of state transition request
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* @sde_kms: handle to sde_kms
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* @old_state: old crtc vm req state
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* @new_state: new crtc vm req state
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* @return: 0 on success
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*/
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int sde_vm_request_valid(struct sde_kms *sde_kms,
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enum sde_crtc_vm_req old_state,
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enum sde_crtc_vm_req new_state);
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/**
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* sde_vm_msg_send - send display custom message through message queue
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* @sde_vm: handle to sde_vm struct
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* @msg: payload data
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* @msg_size: payload data size
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* @return: 0 on success
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*/
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int sde_vm_msg_send(struct sde_vm *sde_vm, void *msg, size_t msg_size);
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#endif /* __SDE_VM_COMMON_H__ */
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