mirror of
git://nv-tegra.nvidia.com/linux-nv-oot.git
synced 2025-12-25 02:32:08 +03:00
a51a3b4d6f
While accessing IVC framework APIs is causing concurrency issue leading to system crash. so protecting the APIs using mutex. Also removing the req_lock mutex which is being used unnecessarily since the shared resources are already protected by ivc_lock mutex. Bug 3937188 Signed-off-by: Manish Bhardwaj <mbhardwaj@nvidia.com> Change-Id: Ie49161b7f2659f9c44352d50f950d8f5a3cae32c Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2856249 Reviewed-by: svcacv <svcacv@nvidia.com> Reviewed-by: Suresh Venkatachalam <skathirampat@nvidia.com> Reviewed-by: Sandeep Trasi <strasi@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
152 lines
3.8 KiB
C
152 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (c) 2022-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _TEGRA_VBLK_H_
|
|
#define _TEGRA_VBLK_H_
|
|
|
|
#include <linux/version.h>
|
|
#if KERNEL_VERSION(5, 18, 0) > LINUX_VERSION_CODE
|
|
#include <linux/genhd.h>
|
|
#endif
|
|
#include <linux/blkdev.h>
|
|
#include <linux/blk-mq.h>
|
|
#include <linux/bio.h>
|
|
#include <soc/tegra/ivc-priv.h>
|
|
#include <soc/tegra/ivc_ext.h>
|
|
#include <soc/tegra/virt/hv-ivc.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/mutex.h>
|
|
#include <tegra_virt_storage_spec.h>
|
|
|
|
#define DRV_NAME "tegra_hv_vblk"
|
|
|
|
/* Minor number and partition management. */
|
|
#define VBLK_MINORS 32
|
|
|
|
#define IVC_RESET_RETRIES 30
|
|
|
|
#define VS_LOG_HEADS 4
|
|
#define VS_LOG_SECTS 16
|
|
|
|
#define MAX_VSC_REQS 32
|
|
|
|
struct vblk_ioctl_req {
|
|
uint32_t ioctl_id;
|
|
void *ioctl_buf;
|
|
uint32_t ioctl_len;
|
|
int32_t status;
|
|
};
|
|
|
|
struct req_entry {
|
|
struct list_head list_entry;
|
|
struct request *req;
|
|
};
|
|
|
|
struct vsc_request {
|
|
struct vs_request vs_req;
|
|
struct request *req;
|
|
struct req_iterator iter;
|
|
struct vblk_ioctl_req *ioctl_req;
|
|
void *mempool_virt;
|
|
uint32_t mempool_offset;
|
|
uint32_t mempool_len;
|
|
uint32_t id;
|
|
struct vblk_dev* vblkdev;
|
|
/* Scatter list for maping IOVA address */
|
|
struct scatterlist *sg_lst;
|
|
int sg_num_ents;
|
|
};
|
|
|
|
enum vblk_queue_state {
|
|
VBLK_UNKNOWN,
|
|
VBLK_QUEUE_SUSPENDED,
|
|
VBLK_QUEUE_ACTIVE,
|
|
};
|
|
|
|
/*
|
|
* The drvdata of virtual device.
|
|
*/
|
|
struct vblk_dev {
|
|
struct vs_config_info config;
|
|
uint64_t size; /* Device size in bytes */
|
|
short users; /* How many users */
|
|
short media_change; /* Flag a media change? */
|
|
spinlock_t lock; /* For mutual exclusion */
|
|
struct request_queue *queue; /* The device request queue */
|
|
struct gendisk *gd; /* The gendisk structure */
|
|
struct blk_mq_tag_set tag_set;
|
|
struct list_head req_list; /* List containing req */
|
|
uint32_t ivc_id;
|
|
uint32_t ivm_id;
|
|
struct tegra_hv_ivc_cookie *ivck;
|
|
struct tegra_hv_ivm_cookie *ivmk;
|
|
uint32_t devnum;
|
|
bool initialized;
|
|
struct work_struct init;
|
|
struct work_struct work;
|
|
struct workqueue_struct *wq;
|
|
struct device *device;
|
|
void *shared_buffer;
|
|
struct mutex ioctl_lock;
|
|
spinlock_t queue_lock;
|
|
struct vsc_request reqs[MAX_VSC_REQS];
|
|
DECLARE_BITMAP(pending_reqs, MAX_VSC_REQS);
|
|
uint32_t inflight_reqs;
|
|
uint32_t inflight_ioctl_reqs;
|
|
uint32_t max_requests;
|
|
uint32_t max_ioctl_requests;
|
|
#if (IS_ENABLED(CONFIG_TEGRA_HSIERRRPTINJ))
|
|
uint32_t epl_id;
|
|
uint32_t epl_reporter_id;
|
|
uint32_t instance_id;
|
|
uint32_t hsierror_status;
|
|
struct completion hsierror_handle;
|
|
#endif
|
|
struct mutex ivc_lock;
|
|
enum vblk_queue_state queue_state;
|
|
struct completion req_queue_empty;
|
|
};
|
|
|
|
int vblk_complete_ioctl_req(struct vblk_dev *vblkdev,
|
|
struct vsc_request *vsc_req, int32_t status);
|
|
|
|
int vblk_prep_ioctl_req(struct vblk_dev *vblkdev,
|
|
struct vblk_ioctl_req *ioctl_req,
|
|
struct vsc_request *vsc_req);
|
|
|
|
int vblk_prep_sg_io(struct vblk_dev *vblkdev,
|
|
struct vblk_ioctl_req *ioctl_req,
|
|
void __user *user);
|
|
|
|
int vblk_complete_sg_io(struct vblk_dev *vblkdev,
|
|
struct vblk_ioctl_req *ioctl_req,
|
|
void __user *user);
|
|
|
|
int vblk_prep_mmc_multi_ioc(struct vblk_dev *vblkdev,
|
|
struct vblk_ioctl_req *ioctl_req,
|
|
void __user *user,
|
|
uint32_t cmd);
|
|
|
|
int vblk_complete_mmc_multi_ioc(struct vblk_dev *vblkdev,
|
|
struct vblk_ioctl_req *ioctl_req,
|
|
void __user *user,
|
|
uint32_t cmd);
|
|
|
|
int vblk_prep_ufs_combo_ioc(struct vblk_dev *vblkdev,
|
|
struct vblk_ioctl_req *ioctl_req,
|
|
void __user *user, uint32_t cmd);
|
|
|
|
int vblk_complete_ufs_combo_ioc(struct vblk_dev *vblkdev,
|
|
struct vblk_ioctl_req *ioctl_req,
|
|
void __user *user,
|
|
uint32_t cmd);
|
|
|
|
int vblk_submit_ioctl_req(struct block_device *bdev,
|
|
unsigned int cmd, void __user *user);
|
|
|
|
int vblk_ioctl(struct block_device *bdev, fmode_t mode,
|
|
unsigned int cmd, unsigned long arg);
|
|
#endif
|