720f9d0014
Add VM layer files to handle VM specific operations for primary and secondary VM's. They interact with Hypervisor RM modules to LEND/ACCEPT/RELEASE/RECLAIM HW resources. They also handle notifications for each of the above Hyp RM operations to acquire and update the SDE software states. Change-Id: I5982f4bf56550dc464797c62cb356be39925b21c Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
141 lines
3.3 KiB
C
141 lines
3.3 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_H__
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#define __SDE_VM_H__
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#include "msm_drv.h"
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struct sde_kms;
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/**
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* sde_vm_irq_entry - VM irq specification
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* @label - VM_IRQ_LABEL assigned by Hyp RM
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* @irq - linux mapped irq number
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*/
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struct sde_vm_irq_entry {
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u32 label;
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u32 irq;
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};
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/**
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* sde_vm_irq_desc - list of IRQ's to be handled
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* @n_irq - irq count
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* @irq_entries - list of sde_vm_irq_entry
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*/
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struct sde_vm_irq_desc {
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u32 n_irq;
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struct sde_vm_irq_entry *irq_entries;
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};
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/**
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* sde_vm - VM layer descriptor. Abstract for all the VM's
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* @vm_res_lock - mutex to protect resource updates
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* @mem_notificaiton_cookie - Hyp RM notification identifier
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* @n_irq_lent - irq count
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* @io_mem_handle - RM identifier for the IO range
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* @sde_kms - handle to sde_kms
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*/
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struct sde_vm {
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struct mutex vm_res_lock;
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void *mem_notification_cookie;
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atomic_t n_irq_lent;
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int io_mem_handle;
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struct sde_kms *sde_kms;
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};
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/**
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* sde_vm_primary - VM layer descriptor for Primary VM
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* @base - parent struct object
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* @irq_desc - cache copy of irq list for validating reclaim
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*/
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struct sde_vm_primary {
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struct sde_vm base;
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struct sde_vm_irq_desc *irq_desc;
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};
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/**
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* sde_vm_trusted - VM layer descriptor for Trusted VM
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* @base - parent struct object
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* @sgl_desc - hyp RM sgl list descriptor for IO ranges
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* @irq_desc - irq list
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*/
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struct sde_vm_trusted {
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struct sde_vm base;
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struct sde_vm_irq_desc *irq_desc;
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struct hh_sgl_desc *sgl_desc;
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};
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/**
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* sde_vm_ops - VM specific function hooks
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*/
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struct sde_vm_ops {
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/**
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* vm_acquire - hook to handle HW accept
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* @kms - handle to sde_kms
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* @return - return 0 on success
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*/
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int (*vm_acquire)(struct sde_kms *kms);
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/**
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* vm_release - hook to handle HW release
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* @kms - handle to sde_kms
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* @return - return 0 on success
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*/
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int (*vm_release)(struct sde_kms *kms);
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/**
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* vm_owns_hw - hook to query the HW status of the VM
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* @kms - handle to sde_kms
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* @return - return true when vm owns the hw
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*/
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bool (*vm_owns_hw)(struct sde_kms *kms);
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/**
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* vm_prepare_commit - hook to handle operations before the first
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commit after acquiring the HW
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* @sde_kms - handle to sde_kms
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* @state - global atomic state to be parsed
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* @return - return 0 on success
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*/
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int (*vm_prepare_commit)(struct sde_kms *sde_kms,
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struct drm_atomic_state *state);
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/**
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* vm_post_commit - hook to handle operations after
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last commit before release
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* @sde_kms - handle to sde_kms
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* @state - global atomic state to be parsed
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* @return - return 0 on success
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*/
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int (*vm_post_commit)(struct sde_kms *sde_kms,
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struct drm_atomic_state *state);
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/**
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* vm_deinit - deinitialize VM layer
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* @kms - pointer to sde_kms
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* @ops - primary VM specific ops functions
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*/
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void (*vm_deinit)(struct sde_kms *kms, struct sde_vm_ops *ops);
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};
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/**
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* sde_vm_primary_init - Initialize primary VM layer
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* @kms - pointer to sde_kms
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* @ops - primary VM specific ops functions
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* @return - 0 on success
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*/
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int sde_vm_primary_init(struct sde_kms *kms, struct sde_vm_ops *ops);
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/**
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* sde_vm_trusted_init - Initialize Trusted VM layer
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* @kms - pointer to sde_kms
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* @ops - primary VM specific ops functions
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* @return - 0 on success
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*/
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int sde_vm_trusted_init(struct sde_kms *kms, struct sde_vm_ops *ops);
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#endif /* __SDE_VM_H__ */
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