disp: msm: sde: add VM files for SDE
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>
This commit is contained in:
Jeykumar Sankaran
parent
de02324782
commit
720f9d0014
@ -10,3 +10,4 @@ export CONFIG_DRM_MSM_REGISTER_LOGGING=y
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export CONFIG_QCOM_MDSS_PLL=y
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export CONFIG_DRM_SDE_RSC=y
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export CONFIG_DISPLAY_BUILD=y
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export CONFIG_DRM_SDE_VM=y
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@ -15,4 +15,4 @@
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#define CONFIG_DRM_SDE_EVTLOG_DEBUG 1
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#define CONFIG_QCOM_MDSS_PLL 1
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#define CONFIG_DRM_SDE_RSC 1
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#define CONFIG_DRM_SDE_VM 1
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@ -81,7 +81,11 @@ msm_drm-$(CONFIG_DRM_MSM_SDE) += sde/sde_crtc.o \
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sde/sde_hw_qdss.o \
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sde_dsc_helper.o \
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sde_vdc_helper.o \
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sde/sde_hw_rc.o
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sde/sde_hw_rc.o \
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msm_drm-$(CONFIG_DRM_SDE_VM) += sde/sde_vm_common.o \
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sde/sde_vm_primary.o \
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sde/sde_vm_trusted.o
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msm_drm-$(CONFIG_DEBUG_FS) += sde_dbg.o \
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sde_dbg_evtlog.o \
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@ -40,6 +40,7 @@
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#include "sde_power_handle.h"
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#include "sde_irq.h"
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#include "sde_core_perf.h"
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#include "sde_vm.h"
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#define DRMID(x) ((x) ? (x)->base.id : -1)
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@ -310,6 +311,9 @@ struct sde_kms {
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cpumask_t irq_cpu_mask;
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struct dev_pm_qos_request pm_qos_irq_req[NR_CPUS];
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struct irq_affinity_notify affinity_notify;
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struct sde_vm_ops vm_ops;
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struct sde_vm *vm;
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};
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struct vsync_info {
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140
msm/sde/sde_vm.h
Normal file
140
msm/sde/sde_vm.h
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@ -0,0 +1,140 @@
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/* 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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213
msm/sde/sde_vm_common.c
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213
msm/sde/sde_vm_common.c
Normal file
@ -0,0 +1,213 @@
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// 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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#include <linux/list_sort.h>
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#include "linux/sde_rsc.h"
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#include "dsi/dsi_display.h"
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#include "dp/dp_display.h"
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#include "sde_kms.h"
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#include "sde_vm_common.h"
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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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struct hh_notify_vmid_desc *vmid_desc;
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vmid_desc = kzalloc(offsetof(struct hh_notify_vmid_desc,
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vmid_entries[1]), GFP_KERNEL);
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if (!vmid_desc)
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return ERR_PTR(ENOMEM);
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vmid_desc->n_vmid_entries = 1;
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vmid_desc->vmid_entries[0].vmid = vmid;
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return vmid_desc;
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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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struct hh_acl_desc *acl_desc;
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hh_vmid_t vmid;
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hh_rm_get_vmid(vm_name, &vmid);
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acl_desc = kzalloc(offsetof(struct hh_acl_desc, acl_entries[1]),
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GFP_KERNEL);
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if (!acl_desc)
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return ERR_PTR(ENOMEM);
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acl_desc->n_acl_entries = 1;
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acl_desc->acl_entries[0].vmid = vmid;
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acl_desc->acl_entries[0].perms = HH_RM_ACL_R | HH_RM_ACL_W;
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return acl_desc;
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}
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int __mem_sort_cmp(void *priv, struct list_head *a, struct list_head *b)
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{
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struct msm_io_mem_entry *left =
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container_of(a, struct msm_io_mem_entry, list);
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struct msm_io_mem_entry *right =
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container_of(b, struct msm_io_mem_entry, list);
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return (left->base - right->base);
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}
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bool __merge_on_overlap(struct msm_io_mem_entry *res,
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const struct msm_io_mem_entry *left,
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const struct msm_io_mem_entry *right)
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{
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phys_addr_t l_s = left->base;
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phys_addr_t l_e = left->base + left->size;
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phys_addr_t r_s = right->base;
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phys_addr_t r_e = right->base + right->size;
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memset(res, 0, sizeof(*res));
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if (r_s <= l_e) {
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res->base = min(l_s, r_s);
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res->size = max(l_e, r_e) - res->base;
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return true;
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}
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return false;
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}
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void _sde_vm_sort_and_align(struct list_head *mem)
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{
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struct msm_io_mem_entry *entry, *tmp, *prev = NULL;
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struct msm_io_mem_entry merged_entry;
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list_for_each_entry(entry, mem, list) {
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entry->base = ALIGN_DOWN(entry->base, PAGE_SIZE);
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entry->size = ALIGN(entry->size, PAGE_SIZE);
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}
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list_sort(NULL, mem, __mem_sort_cmp);
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list_for_each_entry_safe(entry, tmp, mem, list) {
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if (prev && __merge_on_overlap(&merged_entry, prev, entry)) {
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prev->base = merged_entry.base;
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prev->size = merged_entry.size;
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list_del(&entry->list);
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entry = prev;
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}
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prev = entry;
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}
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list_for_each_entry(entry, mem, list)
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SDE_DEBUG("base: 0x%x - size: 0x%x\n",
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entry->base, entry->size);
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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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struct hh_sgl_desc *sgl_desc;
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struct msm_io_mem_entry *mem;
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u32 i = 0, num_mem_entry = 0;
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_sde_vm_sort_and_align(&io_res->mem);
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list_for_each_entry(mem, &io_res->mem, list)
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num_mem_entry++;
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sgl_desc = kzalloc(offsetof(struct hh_sgl_desc,
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sgl_entries[num_mem_entry]), GFP_KERNEL);
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if (!sgl_desc)
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return ERR_PTR(ENOMEM);
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sgl_desc->n_sgl_entries = num_mem_entry;
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list_for_each_entry(mem, &io_res->mem, list) {
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sgl_desc->sgl_entries[i].ipa_base = mem->base;
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sgl_desc->sgl_entries[i].size = mem->size;
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i++;
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}
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msm_dss_clean_io_mem(&io_res->mem);
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return sgl_desc;
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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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struct msm_io_irq_entry *irq;
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u32 i = 0, num_irq = 0;
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struct sde_vm_irq_desc *irq_desc;
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list_for_each_entry(irq, &io_res->irq, list)
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num_irq++;
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irq_desc = kzalloc(sizeof(*irq_desc), GFP_KERNEL);
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if (!irq_desc)
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return ERR_PTR(ENOMEM);
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irq_desc->irq_entries = kcalloc(num_irq,
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sizeof(struct sde_vm_irq_entry),
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GFP_KERNEL);
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if (!irq_desc->irq_entries) {
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sde_vm_free_irq(irq_desc);
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return ERR_PTR(ENOMEM);
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}
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list_for_each_entry(irq, &io_res->irq, list) {
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struct sde_vm_irq_entry *entry = &irq_desc->irq_entries[i];
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entry->irq = irq->irq_num;
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entry->label = irq->label;
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i++;
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}
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irq_desc->n_irq = num_irq;
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msm_dss_clean_io_irq(&io_res->irq);
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return irq_desc;
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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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if (irq_desc && irq_desc->irq_entries)
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kfree(irq_desc->irq_entries);
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kfree(irq_desc);
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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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struct msm_drm_private *priv = sde_kms->dev->dev_private;
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struct msm_vm_client_entry *entry;
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int rc = 0;
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rc = sde_kms_get_io_resources(sde_kms, io_res);
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if (rc)
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goto fail_get_res;
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list_for_each_entry(entry, &priv->vm_client_list, list) {
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if (!entry->ops.vm_get_io_resources)
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continue;
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rc = entry->ops.vm_get_io_resources(io_res, entry->data);
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if (rc) {
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SDE_ERROR("get_io_resources failed for device: %d\n",
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entry->dev->id);
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goto fail_get_res;
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}
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}
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return rc;
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fail_get_res:
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msm_dss_clean_io_mem(&io_res->mem);
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msm_dss_clean_io_irq(&io_res->irq);
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return rc;
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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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msm_dss_clean_io_mem(&io_res->mem);
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msm_dss_clean_io_irq(&io_res->irq);
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}
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66
msm/sde/sde_vm_common.h
Normal file
66
msm/sde/sde_vm_common.h
Normal file
@ -0,0 +1,66 @@
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/* 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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/**
|
||||
* sde_vm_get_resources - collect io resource from all the VM clients
|
||||
* @sde_kms: handle to sde_kms
|
||||
* @io_res: pointer to msm_io_res structure to populate the resources
|
||||
* @return: 0 on success.
|
||||
*/
|
||||
int sde_vm_get_resources(struct sde_kms *sde_kms, struct msm_io_res *io_res);
|
||||
|
||||
/**
|
||||
* sde_vm_free_resources - free up the io resource list
|
||||
* @io_res: pointer to msm_io_res structure
|
||||
*/
|
||||
void sde_vm_free_resources(struct msm_io_res *io_res);
|
||||
|
||||
#endif /* __SDE_VM_COMMON_H__ */
|
||||
294
msm/sde/sde_vm_primary.c
Normal file
294
msm/sde/sde_vm_primary.c
Normal file
@ -0,0 +1,294 @@
|
||||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/*
|
||||
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
|
||||
*/
|
||||
#include <linux/notifier.h>
|
||||
#include <linux/haven/hh_rm_drv.h>
|
||||
#include <linux/haven/hh_irq_lend.h>
|
||||
#include <linux/haven/hh_mem_notifier.h>
|
||||
#include "sde_kms.h"
|
||||
#include "sde_vm.h"
|
||||
#include "sde_vm_common.h"
|
||||
|
||||
#define to_vm_primary(vm) ((struct sde_vm_primary *)vm)
|
||||
|
||||
static bool sde_vm_owns_hw(struct sde_kms *sde_kms)
|
||||
{
|
||||
struct sde_vm_primary *sde_vm;
|
||||
bool owns_irq, owns_mem_io;
|
||||
|
||||
sde_vm = to_vm_primary(sde_kms->vm);
|
||||
|
||||
owns_irq = !atomic_read(&sde_vm->base.n_irq_lent);
|
||||
owns_mem_io = (sde_vm->base.io_mem_handle < 0);
|
||||
|
||||
return (owns_irq & owns_mem_io);
|
||||
}
|
||||
|
||||
void sde_vm_irq_release_notification_handler(void *req, enum hh_irq_label label)
|
||||
{
|
||||
struct sde_vm_primary *sde_vm;
|
||||
int rc = 0;
|
||||
|
||||
if (!req) {
|
||||
SDE_ERROR("invalid data on release notificaiton\n");
|
||||
return;
|
||||
}
|
||||
|
||||
sde_vm = to_vm_primary(req);
|
||||
|
||||
mutex_lock(&sde_vm->base.vm_res_lock);
|
||||
|
||||
rc = hh_irq_reclaim(label);
|
||||
if (rc) {
|
||||
SDE_ERROR("failed to reclaim irq label: %d\n", label);
|
||||
goto notify_end;
|
||||
}
|
||||
|
||||
/**
|
||||
* Skipping per IRQ label verification since IRQ's are MDSS centric.
|
||||
* Need to enable addition verifications when per-display IRQ's are
|
||||
* supported.
|
||||
*/
|
||||
atomic_dec(&sde_vm->base.n_irq_lent);
|
||||
|
||||
SDE_INFO("irq reclaim succeeded for label: %d\n", label);
|
||||
notify_end:
|
||||
mutex_unlock(&sde_vm->base.vm_res_lock);
|
||||
|
||||
}
|
||||
|
||||
static void sde_vm_mem_release_notification_handler(
|
||||
enum hh_mem_notifier_tag tag, unsigned long notif_type,
|
||||
void *entry_data, void *notif_msg)
|
||||
{
|
||||
struct hh_rm_notif_mem_released_payload *payload;
|
||||
struct sde_vm_primary *sde_vm;
|
||||
struct sde_kms *sde_kms;
|
||||
int rc = 0;
|
||||
|
||||
if (notif_type != HH_RM_NOTIF_MEM_RELEASED ||
|
||||
tag != HH_MEM_NOTIFIER_TAG_DISPLAY)
|
||||
return;
|
||||
|
||||
if (!entry_data || !notif_msg)
|
||||
return;
|
||||
|
||||
payload = (struct hh_rm_notif_mem_released_payload *)notif_msg;
|
||||
sde_vm = (struct sde_vm_primary *)entry_data;
|
||||
sde_kms = sde_vm->base.sde_kms;
|
||||
|
||||
mutex_lock(&sde_vm->base.vm_res_lock);
|
||||
|
||||
if (payload->mem_handle != sde_vm->base.io_mem_handle)
|
||||
goto notify_end;
|
||||
|
||||
rc = hh_rm_mem_reclaim(payload->mem_handle, 0);
|
||||
if (rc) {
|
||||
SDE_ERROR("failed to reclaim IO memory, rc=%d\n", rc);
|
||||
goto notify_end;
|
||||
}
|
||||
|
||||
sde_vm->base.io_mem_handle = -1;
|
||||
|
||||
SDE_INFO("mem reclaim succeeded for tag: %d\n", tag);
|
||||
notify_end:
|
||||
mutex_unlock(&sde_vm->base.vm_res_lock);
|
||||
}
|
||||
|
||||
static int _sde_vm_lend_notify_registers(struct sde_vm *vm,
|
||||
struct msm_io_res *io_res)
|
||||
{
|
||||
struct sde_vm_primary *sde_vm;
|
||||
struct hh_acl_desc *acl_desc;
|
||||
struct hh_sgl_desc *sgl_desc;
|
||||
struct hh_notify_vmid_desc *vmid_desc;
|
||||
hh_memparcel_handle_t mem_handle;
|
||||
hh_vmid_t trusted_vmid;
|
||||
int rc = 0;
|
||||
|
||||
sde_vm = to_vm_primary(vm);
|
||||
|
||||
acl_desc = sde_vm_populate_acl(HH_TRUSTED_VM);
|
||||
if (IS_ERR(acl_desc)) {
|
||||
SDE_ERROR("failed to populate acl descriptor, rc = %d\n",
|
||||
PTR_ERR(acl_desc));
|
||||
return rc;
|
||||
}
|
||||
|
||||
sgl_desc = sde_vm_populate_sgl(io_res);
|
||||
if (IS_ERR_OR_NULL(sgl_desc)) {
|
||||
SDE_ERROR("failed to populate sgl descriptor, rc = %d\n",
|
||||
PTR_ERR(sgl_desc));
|
||||
goto sgl_fail;
|
||||
}
|
||||
|
||||
rc = hh_rm_mem_lend(HH_RM_MEM_TYPE_IO, 0, SDE_VM_MEM_LABEL,
|
||||
acl_desc, sgl_desc, NULL, &mem_handle);
|
||||
if (rc) {
|
||||
SDE_ERROR("hyp lend failed with error, rc: %d\n", rc);
|
||||
goto fail;
|
||||
}
|
||||
|
||||
hh_rm_get_vmid(HH_TRUSTED_VM, &trusted_vmid);
|
||||
|
||||
vmid_desc = sde_vm_populate_vmid(trusted_vmid);
|
||||
|
||||
rc = hh_rm_mem_notify(mem_handle, HH_RM_MEM_NOTIFY_RECIPIENT,
|
||||
HH_MEM_NOTIFIER_TAG_DISPLAY, vmid_desc);
|
||||
if (rc) {
|
||||
SDE_ERROR("hyp mem notify failed, rc = %d\n", rc);
|
||||
goto notify_fail;
|
||||
}
|
||||
|
||||
sde_vm->base.io_mem_handle = mem_handle;
|
||||
|
||||
SDE_INFO("IO memory lend suceeded for tag: %d\n",
|
||||
HH_MEM_NOTIFIER_TAG_DISPLAY);
|
||||
|
||||
notify_fail:
|
||||
kfree(vmid_desc);
|
||||
fail:
|
||||
kfree(sgl_desc);
|
||||
sgl_fail:
|
||||
kfree(acl_desc);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int _sde_vm_lend_irq(struct sde_vm *vm, struct msm_io_res *io_res)
|
||||
{
|
||||
struct sde_vm_primary *sde_vm;
|
||||
struct sde_vm_irq_desc *irq_desc;
|
||||
int i, rc = 0;
|
||||
|
||||
sde_vm = to_vm_primary(vm);
|
||||
|
||||
irq_desc = sde_vm_populate_irq(io_res);
|
||||
|
||||
for (i = 0; i < irq_desc->n_irq; i++) {
|
||||
struct sde_vm_irq_entry *entry = &irq_desc->irq_entries[i];
|
||||
|
||||
rc = hh_irq_lend(entry->label, HH_TRUSTED_VM, entry->irq,
|
||||
sde_vm_irq_release_notification_handler,
|
||||
sde_vm);
|
||||
if (rc) {
|
||||
SDE_ERROR("irq lend failed for irq label: %d, rc=%d\n",
|
||||
entry->label, rc);
|
||||
hh_irq_reclaim(entry->label);
|
||||
return rc;
|
||||
}
|
||||
|
||||
SDE_INFO("vm lend suceeded for IRQ label: %d\n", entry->label);
|
||||
}
|
||||
|
||||
// cache the irq list for validation during release
|
||||
sde_vm->irq_desc = irq_desc;
|
||||
atomic_set(&sde_vm->base.n_irq_lent, sde_vm->irq_desc->n_irq);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int _sde_vm_release(struct sde_kms *kms)
|
||||
{
|
||||
struct msm_io_res io_res;
|
||||
struct sde_vm_primary *sde_vm;
|
||||
int rc = 0;
|
||||
|
||||
if (!kms->vm)
|
||||
return 0;
|
||||
|
||||
sde_vm = to_vm_primary(kms->vm);
|
||||
|
||||
INIT_LIST_HEAD(&io_res.mem);
|
||||
INIT_LIST_HEAD(&io_res.irq);
|
||||
|
||||
rc = sde_vm_get_resources(kms, &io_res);
|
||||
if (rc) {
|
||||
SDE_ERROR("fail to get resources\n");
|
||||
goto assign_fail;
|
||||
}
|
||||
|
||||
mutex_lock(&sde_vm->base.vm_res_lock);
|
||||
|
||||
rc = _sde_vm_lend_notify_registers(kms->vm, &io_res);
|
||||
if (rc) {
|
||||
SDE_ERROR("fail to lend notify resources\n");
|
||||
goto assign_fail;
|
||||
}
|
||||
|
||||
rc = _sde_vm_lend_irq(kms->vm, &io_res);
|
||||
if (rc) {
|
||||
SDE_ERROR("failed to lend irq's\n");
|
||||
goto assign_fail;
|
||||
}
|
||||
assign_fail:
|
||||
sde_vm_free_resources(&io_res);
|
||||
mutex_unlock(&sde_vm->base.vm_res_lock);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void _sde_vm_deinit(struct sde_kms *sde_kms, struct sde_vm_ops *ops)
|
||||
{
|
||||
struct sde_vm_primary *sde_vm;
|
||||
|
||||
if (!sde_kms->vm)
|
||||
return;
|
||||
|
||||
memset(ops, 0, sizeof(*ops));
|
||||
|
||||
sde_vm = to_vm_primary(sde_kms->vm);
|
||||
|
||||
if (sde_vm->base.mem_notification_cookie)
|
||||
hh_mem_notifier_unregister(
|
||||
sde_vm->base.mem_notification_cookie);
|
||||
|
||||
if (sde_vm->irq_desc)
|
||||
sde_vm_free_irq(sde_vm->irq_desc);
|
||||
|
||||
kfree(sde_vm);
|
||||
}
|
||||
|
||||
static void _sde_vm_set_ops(struct sde_vm_ops *ops)
|
||||
{
|
||||
memset(ops, 0, sizeof(*ops));
|
||||
|
||||
ops->vm_release = _sde_vm_release;
|
||||
ops->vm_owns_hw = sde_vm_owns_hw;
|
||||
ops->vm_deinit = _sde_vm_deinit;
|
||||
}
|
||||
|
||||
int sde_vm_primary_init(struct sde_kms *kms, struct sde_vm_ops *ops)
|
||||
{
|
||||
struct sde_vm_primary *sde_vm;
|
||||
void *cookie;
|
||||
int rc = 0;
|
||||
|
||||
sde_vm = kzalloc(sizeof(*sde_vm), GFP_KERNEL);
|
||||
if (!sde_vm)
|
||||
return -ENOMEM;
|
||||
|
||||
_sde_vm_set_ops(ops);
|
||||
|
||||
cookie = hh_mem_notifier_register(HH_MEM_NOTIFIER_TAG_DISPLAY,
|
||||
sde_vm_mem_release_notification_handler, sde_vm);
|
||||
if (!cookie) {
|
||||
SDE_ERROR("fails to register RM mem release notifier\n");
|
||||
rc = -EINVAL;
|
||||
goto init_fail;
|
||||
}
|
||||
|
||||
sde_vm->base.mem_notification_cookie = cookie;
|
||||
sde_vm->base.sde_kms = kms;
|
||||
sde_vm->base.io_mem_handle = -1; // 0 is a valid handle
|
||||
kms->vm = &sde_vm->base;
|
||||
|
||||
mutex_init(&sde_vm->base.vm_res_lock);
|
||||
|
||||
return 0;
|
||||
init_fail:
|
||||
_sde_vm_deinit(kms, ops);
|
||||
|
||||
return rc;
|
||||
}
|
||||
394
msm/sde/sde_vm_trusted.c
Normal file
394
msm/sde/sde_vm_trusted.c
Normal file
@ -0,0 +1,394 @@
|
||||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/*
|
||||
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
|
||||
*/
|
||||
|
||||
#include <linux/haven/hh_rm_drv.h>
|
||||
#include <linux/haven/hh_irq_lend.h>
|
||||
#include <linux/haven/hh_mem_notifier.h>
|
||||
#include <linux/sort.h>
|
||||
#include <linux/bsearch.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/irqdomain.h>
|
||||
#include "sde_kms.h"
|
||||
#include "sde_vm_common.h"
|
||||
#include "sde_vm.h"
|
||||
|
||||
#define to_vm_trusted(vm) ((struct sde_vm_trusted *)vm)
|
||||
|
||||
static int __sgl_cmp(const void *a, const void *b)
|
||||
{
|
||||
struct hh_sgl_entry *l = (struct hh_sgl_entry *)a;
|
||||
struct hh_sgl_entry *r = (struct hh_sgl_entry *)b;
|
||||
|
||||
return (l->ipa_base - r->ipa_base);
|
||||
}
|
||||
|
||||
int _sde_vm_validate_sgl(struct hh_sgl_desc *expected,
|
||||
struct hh_sgl_desc *assigned)
|
||||
{
|
||||
u32 idx;
|
||||
|
||||
/*
|
||||
* fragmented address spaces are not supported.
|
||||
* So the number of sgl entries is expected to be the same.
|
||||
*/
|
||||
if (expected->n_sgl_entries != assigned->n_sgl_entries)
|
||||
return -E2BIG;
|
||||
|
||||
sort(assigned->sgl_entries, assigned->n_sgl_entries,
|
||||
sizeof(assigned->sgl_entries[0]), __sgl_cmp, NULL);
|
||||
|
||||
for (idx = 0; idx < expected->n_sgl_entries; idx++) {
|
||||
struct hh_sgl_entry *e = &expected->sgl_entries[idx];
|
||||
struct hh_sgl_entry *a = &assigned->sgl_entries[idx];
|
||||
|
||||
if ((e->ipa_base != a->ipa_base) || (e->size != a->size)) {
|
||||
SDE_DEBUG("sgl mismatch: (%ld - %d) vs (%ld - %d)\n",
|
||||
e->ipa_base, e->size, a->ipa_base, a->size);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __irq_cmp(const void *a, const void *b)
|
||||
{
|
||||
struct sde_vm_irq_entry *l = (struct sde_vm_irq_entry *)a;
|
||||
struct sde_vm_irq_entry *r = (struct sde_vm_irq_entry *)b;
|
||||
|
||||
return (l->label - r->label);
|
||||
}
|
||||
|
||||
void sde_vm_irq_lend_notification_handler(void *req, enum hh_irq_label label)
|
||||
{
|
||||
struct sde_vm_trusted *sde_vm;
|
||||
struct sde_kms *sde_kms;
|
||||
struct sde_vm_irq_desc *irq_desc;
|
||||
struct sde_vm_irq_entry irq_temp, *found = NULL;
|
||||
struct irq_data *exp_irq_data, *acc_irq_data;
|
||||
int accepted_irq, expected_irq;
|
||||
|
||||
if (!req) {
|
||||
SDE_ERROR("invalid data on lend notification\n");
|
||||
return;
|
||||
}
|
||||
|
||||
sde_vm = to_vm_trusted(req);
|
||||
sde_kms = sde_vm->base.sde_kms;
|
||||
irq_desc = sde_vm->irq_desc;
|
||||
|
||||
mutex_lock(&sde_vm->base.vm_res_lock);
|
||||
|
||||
memset(&irq_temp, 0, sizeof(irq_temp));
|
||||
|
||||
irq_temp.label = label;
|
||||
found = bsearch((void *)&irq_temp, (void *)irq_desc->irq_entries,
|
||||
irq_desc->n_irq, sizeof(struct sde_vm_irq_entry),
|
||||
__irq_cmp);
|
||||
if (!found) {
|
||||
SDE_ERROR("irq mismatch for label: %d irq: %d\n",
|
||||
irq_temp.label, irq_temp.irq);
|
||||
goto end;
|
||||
}
|
||||
|
||||
expected_irq = found->irq;
|
||||
accepted_irq = hh_irq_accept(label, -1, IRQ_TYPE_LEVEL_HIGH);
|
||||
if (accepted_irq < 0) {
|
||||
SDE_ERROR("failed to accept irq for label: %d\n");
|
||||
goto end;
|
||||
}
|
||||
|
||||
exp_irq_data = irq_get_irq_data(expected_irq);
|
||||
if (!exp_irq_data) {
|
||||
SDE_ERROR("failed to get irq data for irq: %d\n", exp_irq_data);
|
||||
goto end;
|
||||
}
|
||||
|
||||
acc_irq_data = irq_get_irq_data(accepted_irq);
|
||||
if (!acc_irq_data) {
|
||||
SDE_ERROR("failed to get irq data for irq: %d\n", accepted_irq);
|
||||
goto end;
|
||||
}
|
||||
|
||||
if (exp_irq_data->hwirq != acc_irq_data->hwirq) {
|
||||
SDE_ERROR("IRQ mismatch on ACCEPT for label %d\n", label);
|
||||
goto end;
|
||||
}
|
||||
|
||||
SDE_INFO("IRQ accept succeeded for label %d irq: %d\n", label,
|
||||
exp_irq_data->hwirq);
|
||||
|
||||
atomic_inc(&sde_vm->base.n_irq_lent);
|
||||
end:
|
||||
mutex_unlock(&sde_vm->base.vm_res_lock);
|
||||
}
|
||||
|
||||
static void sde_vm_mem_lend_notification_handler(enum hh_mem_notifier_tag tag,
|
||||
unsigned long notif_type,
|
||||
void *entry_data, void *notif_msg)
|
||||
{
|
||||
struct hh_rm_notif_mem_shared_payload *payload;
|
||||
struct hh_sgl_desc *sgl_desc;
|
||||
struct hh_acl_desc *acl_desc;
|
||||
struct sde_kms *sde_kms;
|
||||
struct sde_vm_trusted *sde_vm;
|
||||
int rc = 0;
|
||||
|
||||
if (notif_type != HH_RM_NOTIF_MEM_SHARED ||
|
||||
tag != HH_MEM_NOTIFIER_TAG_DISPLAY)
|
||||
return;
|
||||
|
||||
if (!entry_data || !notif_msg)
|
||||
return;
|
||||
|
||||
payload = (struct hh_rm_notif_mem_shared_payload *)notif_msg;
|
||||
|
||||
if (payload->trans_type != HH_RM_TRANS_TYPE_LEND ||
|
||||
payload->label != SDE_VM_MEM_LABEL)
|
||||
return;
|
||||
|
||||
sde_vm = (struct sde_vm_trusted *)entry_data;
|
||||
sde_kms = sde_vm->base.sde_kms;
|
||||
|
||||
mutex_lock(&sde_vm->base.vm_res_lock);
|
||||
|
||||
acl_desc = sde_vm_populate_acl(HH_TRUSTED_VM);
|
||||
if (IS_ERR(acl_desc)) {
|
||||
SDE_ERROR("failed to populate acl data, rc=%d\n",
|
||||
PTR_ERR(acl_desc));
|
||||
goto acl_fail;
|
||||
}
|
||||
|
||||
sgl_desc = hh_rm_mem_accept(payload->mem_handle, HH_RM_MEM_TYPE_IO,
|
||||
HH_RM_TRANS_TYPE_LEND,
|
||||
HH_RM_MEM_ACCEPT_VALIDATE_ACL_ATTRS|
|
||||
HH_RM_MEM_ACCEPT_VALIDATE_LABEL|
|
||||
HH_RM_MEM_ACCEPT_DONE,
|
||||
payload->label,
|
||||
acl_desc, NULL, NULL, 0);
|
||||
if (IS_ERR_OR_NULL(sgl_desc)) {
|
||||
SDE_ERROR("hh_rm_mem_accept failed with error, rc=%d\n",
|
||||
PTR_ERR(sgl_desc));
|
||||
goto accept_fail;
|
||||
}
|
||||
|
||||
rc = _sde_vm_validate_sgl(sde_vm->sgl_desc, sgl_desc);
|
||||
if (rc) {
|
||||
SDE_ERROR("failed in sgl validation for label: %d, rc = %d\n",
|
||||
payload->label, rc);
|
||||
goto accept_fail;
|
||||
}
|
||||
|
||||
sde_vm->base.io_mem_handle = payload->mem_handle;
|
||||
|
||||
SDE_INFO("mem accept succeeded for tag: %d label: %d\n", tag,
|
||||
payload->label);
|
||||
|
||||
accept_fail:
|
||||
kfree(acl_desc);
|
||||
acl_fail:
|
||||
mutex_unlock(&sde_vm->base.vm_res_lock);
|
||||
}
|
||||
|
||||
static int _sde_vm_release_irq(struct sde_vm *vm)
|
||||
{
|
||||
struct sde_vm_trusted *sde_vm = (struct sde_vm_trusted *)vm;
|
||||
struct sde_vm_irq_desc *irq_desc = sde_vm->irq_desc;
|
||||
int i, rc = 0;
|
||||
|
||||
for (i = 0; i < irq_desc->n_irq; i++) {
|
||||
struct sde_vm_irq_entry *entry = &irq_desc->irq_entries[i];
|
||||
|
||||
rc = hh_irq_release(entry->label);
|
||||
if (rc) {
|
||||
SDE_ERROR("failed to release IRQ label: %d rc = %d\n",
|
||||
entry->label, rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
atomic_dec(&sde_vm->base.n_irq_lent);
|
||||
}
|
||||
|
||||
SDE_INFO("sde vm irq release succeeded, rc = %d\n", rc);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int _sde_vm_release(struct sde_kms *kms)
|
||||
{
|
||||
struct sde_vm_trusted *sde_vm;
|
||||
int rc = 0;
|
||||
|
||||
if (!kms->vm)
|
||||
return 0;
|
||||
|
||||
sde_vm = to_vm_trusted(kms->vm);
|
||||
|
||||
mutex_lock(&sde_vm->base.vm_res_lock);
|
||||
|
||||
rc = hh_rm_mem_release(sde_vm->base.io_mem_handle, 0);
|
||||
if (rc) {
|
||||
SDE_ERROR("hh_rm_mem_release failed, rc=%d\n", rc);
|
||||
goto end;
|
||||
}
|
||||
|
||||
rc = hh_rm_mem_notify(sde_vm->base.io_mem_handle,
|
||||
HH_RM_MEM_NOTIFY_OWNER, HH_MEM_NOTIFIER_TAG_DISPLAY, 0);
|
||||
if (rc) {
|
||||
SDE_ERROR("hyp mem notify on release failed, rc = %d\n", rc);
|
||||
goto end;
|
||||
}
|
||||
|
||||
sde_vm->base.io_mem_handle = -1;
|
||||
|
||||
SDE_INFO("sde vm mem release succeeded, rc = %d\n", rc);
|
||||
|
||||
rc = _sde_vm_release_irq(kms->vm);
|
||||
if (rc) {
|
||||
SDE_ERROR("irq_release failed, rc = %d\n", rc);
|
||||
goto end;
|
||||
}
|
||||
|
||||
end:
|
||||
mutex_unlock(&sde_vm->base.vm_res_lock);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
int _sde_vm_populate_res(struct sde_kms *sde_kms, struct sde_vm_trusted *vm)
|
||||
{
|
||||
struct msm_io_res io_res;
|
||||
int rc = 0;
|
||||
|
||||
INIT_LIST_HEAD(&io_res.mem);
|
||||
INIT_LIST_HEAD(&io_res.irq);
|
||||
|
||||
rc = sde_vm_get_resources(sde_kms, &io_res);
|
||||
if (rc) {
|
||||
SDE_ERROR("fail to get resources\n");
|
||||
return rc;
|
||||
}
|
||||
|
||||
vm->sgl_desc = sde_vm_populate_sgl(&io_res);
|
||||
if (IS_ERR_OR_NULL(vm->sgl_desc)) {
|
||||
SDE_ERROR("failed to parse sgl list\n");
|
||||
return PTR_ERR(vm->sgl_desc);
|
||||
}
|
||||
|
||||
vm->irq_desc = sde_vm_populate_irq(&io_res);
|
||||
if (IS_ERR_OR_NULL(vm->irq_desc)) {
|
||||
SDE_ERROR("failed to parse irq list\n");
|
||||
return PTR_ERR(vm->irq_desc);
|
||||
}
|
||||
|
||||
sort(vm->irq_desc->irq_entries, vm->irq_desc->n_irq,
|
||||
sizeof(vm->irq_desc->irq_entries[0]), __irq_cmp, NULL);
|
||||
sort(vm->sgl_desc->sgl_entries, vm->sgl_desc->n_sgl_entries,
|
||||
sizeof(vm->sgl_desc->sgl_entries[0]), __sgl_cmp, NULL);
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static bool sde_vm_owns_hw(struct sde_kms *sde_kms)
|
||||
{
|
||||
struct sde_vm_trusted *sde_vm;
|
||||
bool owns_irq, owns_mem_io;
|
||||
|
||||
sde_vm = to_vm_trusted(sde_kms->vm);
|
||||
|
||||
owns_irq = (sde_vm->irq_desc->n_irq ==
|
||||
atomic_read(&sde_vm->base.n_irq_lent));
|
||||
owns_mem_io = (sde_vm->base.io_mem_handle >= 0);
|
||||
|
||||
return (owns_irq && owns_mem_io);
|
||||
}
|
||||
|
||||
static void _sde_vm_deinit(struct sde_kms *kms, struct sde_vm_ops *ops)
|
||||
{
|
||||
struct sde_vm_trusted *sde_vm;
|
||||
|
||||
if (!kms->vm)
|
||||
return;
|
||||
|
||||
sde_vm = to_vm_trusted(kms->vm);
|
||||
|
||||
memset(ops, 0, sizeof(*ops));
|
||||
|
||||
if (sde_vm->base.mem_notification_cookie)
|
||||
hh_mem_notifier_unregister(
|
||||
sde_vm->base.mem_notification_cookie);
|
||||
|
||||
kfree(sde_vm->sgl_desc);
|
||||
|
||||
if (sde_vm->irq_desc)
|
||||
sde_vm_free_irq(sde_vm->irq_desc);
|
||||
|
||||
kfree(sde_vm);
|
||||
}
|
||||
|
||||
static void _sde_vm_set_ops(struct sde_vm_ops *ops)
|
||||
{
|
||||
memset(ops, 0, sizeof(*ops));
|
||||
|
||||
ops->vm_release = _sde_vm_release;
|
||||
ops->vm_owns_hw = sde_vm_owns_hw;
|
||||
ops->vm_deinit = _sde_vm_deinit;
|
||||
}
|
||||
|
||||
int sde_vm_trusted_init(struct sde_kms *kms, struct sde_vm_ops *ops)
|
||||
{
|
||||
struct sde_vm_trusted *sde_vm;
|
||||
void *cookie;
|
||||
int rc = 0;
|
||||
|
||||
sde_vm = kzalloc(sizeof(*sde_vm), GFP_KERNEL);
|
||||
if (!sde_vm)
|
||||
return -ENOMEM;
|
||||
|
||||
_sde_vm_set_ops(ops);
|
||||
|
||||
sde_vm->base.sde_kms = kms;
|
||||
|
||||
mutex_init(&sde_vm->base.vm_res_lock);
|
||||
|
||||
/**
|
||||
* Optimize resource population by reading the entire HW resource
|
||||
* space once during init. Once trusted vm starts supporting
|
||||
* per-display space assignment, this read has to be done on each event
|
||||
* notification.
|
||||
*/
|
||||
rc = _sde_vm_populate_res(kms, sde_vm);
|
||||
if (rc) {
|
||||
SDE_ERROR("failed to populate trusted vm res, rc= %d\n", rc);
|
||||
goto init_fail;
|
||||
}
|
||||
|
||||
cookie = hh_mem_notifier_register(HH_MEM_NOTIFIER_TAG_DISPLAY,
|
||||
sde_vm_mem_lend_notification_handler, sde_vm);
|
||||
if (!cookie) {
|
||||
SDE_ERROR("fails to register RM mem lend notifier\n");
|
||||
goto init_fail;
|
||||
}
|
||||
sde_vm->base.mem_notification_cookie = cookie;
|
||||
|
||||
rc = hh_irq_wait_for_lend(HH_IRQ_LABEL_SDE, HH_PRIMARY_VM,
|
||||
sde_vm_irq_lend_notification_handler,
|
||||
(void *)sde_vm);
|
||||
if (rc) {
|
||||
SDE_ERROR("wait for irq lend on label: %d failed, rc=%d\n",
|
||||
HH_IRQ_LABEL_SDE, rc);
|
||||
goto init_fail;
|
||||
}
|
||||
|
||||
kms->vm = &sde_vm->base;
|
||||
|
||||
atomic_set(&sde_vm->base.n_irq_lent, 0);
|
||||
|
||||
return 0;
|
||||
init_fail:
|
||||
_sde_vm_deinit(kms, ops);
|
||||
|
||||
return rc;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user