Files
android_kernel_samsung_sm86…/drivers/cam_isp/cam_isp_dev.c
Ayush Kumar fa6d50974b msm: camera: isp: Add support for error inject framework in TFE
This change is to add support for error inducement in TFE HW.

CRs-Fixed: 3426117
Change-Id: I19a5e095bc84fa88c308640a1d490162698bb45f
Signed-off-by: Ayush Kumar <quic_ayushkr@quicinc.com>
2023-12-18 04:00:24 -08:00

360 lines
8.8 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
* Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/module.h>
#include <linux/iommu.h>
#include <linux/timer.h>
#include <linux/kernel.h>
#include <media/cam_req_mgr.h>
#include "cam_isp_dev.h"
#include "cam_hw_mgr_intf.h"
#include "cam_isp_hw_mgr_intf.h"
#include "cam_node.h"
#include "cam_debug_util.h"
#include "cam_smmu_api.h"
#include "camera_main.h"
#include "cam_common_util.h"
#include "cam_context_utils.h"
static struct cam_isp_dev g_isp_dev;
static int cam_isp_dev_evt_inject_cb(void *inject_args)
{
struct cam_common_inject_evt_param *inject_params = inject_args;
int i;
for (i = 0; i < g_isp_dev.max_context; i++) {
if (g_isp_dev.ctx[i].dev_hdl == inject_params->dev_hdl) {
cam_context_add_evt_inject(&g_isp_dev.ctx[i],
&inject_params->evt_params);
return 0;
}
}
CAM_ERR(CAM_ISP, "No dev hdl found %d", inject_params->dev_hdl);
return -ENODEV;
}
static void cam_isp_dev_iommu_fault_handler(struct cam_smmu_pf_info *pf_smmu_info)
{
int i, rc;
struct cam_node *node = NULL;
struct cam_hw_dump_pf_args pf_args = {0};
if (!pf_smmu_info || !pf_smmu_info->token) {
CAM_ERR(CAM_ISP, "invalid token in page handler cb");
return;
}
node = (struct cam_node *)pf_smmu_info->token;
pf_args.pf_smmu_info = pf_smmu_info;
for (i = 0; i < node->ctx_size; i++) {
cam_context_dump_pf_info(&(node->ctx_list[i]), &pf_args);
if (pf_args.pf_context_info.ctx_found)
/* Faulted ctx found */
break;
}
if (i == node->ctx_size) {
/* Faulted ctx not found. Report PF to userspace */
rc = cam_context_send_pf_evt(NULL, &pf_args);
if (rc)
CAM_ERR(CAM_ISP,
"Failed to notify PF event to userspace rc: %d", rc);
}
}
static void cam_isp_subdev_handle_message(
struct v4l2_subdev *sd,
enum cam_subdev_message_type_t message_type,
void *data)
{
int i, rc = 0;
struct cam_node *node = v4l2_get_subdevdata(sd);
CAM_DBG(CAM_ISP, "node name %s", node->name);
for (i = 0; i < node->ctx_size; i++) {
rc = cam_context_handle_message(&(node->ctx_list[i]), message_type, data);
if (rc)
CAM_ERR(CAM_ISP, "Failed to handle message for %s", node->name);
}
}
static const struct of_device_id cam_isp_dt_match[] = {
{
.compatible = "qcom,cam-isp"
},
{}
};
static int cam_isp_subdev_open(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh)
{
cam_req_mgr_rwsem_read_op(CAM_SUBDEV_LOCK);
mutex_lock(&g_isp_dev.isp_mutex);
g_isp_dev.open_cnt++;
mutex_unlock(&g_isp_dev.isp_mutex);
cam_req_mgr_rwsem_read_op(CAM_SUBDEV_UNLOCK);
return 0;
}
static int cam_isp_subdev_close_internal(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh)
{
int rc = 0;
struct cam_node *node = v4l2_get_subdevdata(sd);
mutex_lock(&g_isp_dev.isp_mutex);
if (g_isp_dev.open_cnt <= 0) {
CAM_DBG(CAM_ISP, "ISP subdev is already closed");
rc = -EINVAL;
goto end;
}
g_isp_dev.open_cnt--;
if (!node) {
CAM_ERR(CAM_ISP, "Node ptr is NULL");
rc = -EINVAL;
goto end;
}
if (g_isp_dev.open_cnt == 0)
cam_node_shutdown(node);
end:
mutex_unlock(&g_isp_dev.isp_mutex);
return rc;
}
static int cam_isp_subdev_close(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh)
{
bool crm_active = cam_req_mgr_is_open();
if (crm_active) {
CAM_DBG(CAM_ISP, "CRM is ACTIVE, close should be from CRM");
return 0;
}
return cam_isp_subdev_close_internal(sd, fh);
}
static const struct v4l2_subdev_internal_ops cam_isp_subdev_internal_ops = {
.close = cam_isp_subdev_close,
.open = cam_isp_subdev_open,
};
static int cam_isp_dev_component_bind(struct device *dev,
struct device *master_dev, void *data)
{
int rc = -1;
int i;
struct cam_hw_mgr_intf hw_mgr_intf;
struct cam_node *node;
const char *compat_str = NULL;
struct platform_device *pdev = to_platform_device(dev);
int iommu_hdl = -1;
of_property_read_string_index(pdev->dev.of_node, "arch-compat", 0,
(const char **)&compat_str);
g_isp_dev.sd.internal_ops = &cam_isp_subdev_internal_ops;
g_isp_dev.sd.close_seq_prior = CAM_SD_CLOSE_HIGH_PRIORITY;
/* Initialize the v4l2 subdevice first. (create cam_node) */
if (strnstr(compat_str, "ife", strlen(compat_str))) {
rc = cam_subdev_probe(&g_isp_dev.sd, pdev, CAM_ISP_DEV_NAME,
CAM_IFE_DEVICE_TYPE);
g_isp_dev.isp_device_type = CAM_IFE_DEVICE_TYPE;
g_isp_dev.max_context = CAM_IFE_CTX_MAX;
} else if (strnstr(compat_str, "mc_tfe", strlen(compat_str))) {
rc = cam_subdev_probe(&g_isp_dev.sd, pdev, CAM_ISP_DEV_NAME,
CAM_TFE_MC_DEVICE_TYPE);
g_isp_dev.isp_device_type = CAM_TFE_MC_DEVICE_TYPE;
g_isp_dev.max_context = CAM_IFE_CTX_MAX;
} else if (strnstr(compat_str, "tfe", strlen(compat_str))) {
rc = cam_subdev_probe(&g_isp_dev.sd, pdev, CAM_ISP_DEV_NAME,
CAM_TFE_DEVICE_TYPE);
g_isp_dev.sd.msg_cb = cam_isp_subdev_handle_message;
g_isp_dev.isp_device_type = CAM_TFE_DEVICE_TYPE;
g_isp_dev.max_context = CAM_TFE_CTX_MAX;
} else {
CAM_ERR(CAM_ISP, "Invalid ISP hw type %s", compat_str);
rc = -EINVAL;
goto err;
}
if (rc) {
CAM_ERR(CAM_ISP, "ISP cam_subdev_probe failed!");
goto err;
}
node = (struct cam_node *) g_isp_dev.sd.token;
memset(&hw_mgr_intf, 0, sizeof(hw_mgr_intf));
g_isp_dev.ctx = kcalloc(g_isp_dev.max_context,
sizeof(struct cam_context),
GFP_KERNEL);
if (!g_isp_dev.ctx) {
CAM_ERR(CAM_ISP,
"Mem Allocation failed for ISP base context");
goto unregister;
}
g_isp_dev.ctx_isp = kcalloc(g_isp_dev.max_context,
sizeof(struct cam_isp_context),
GFP_KERNEL);
if (!g_isp_dev.ctx_isp) {
CAM_ERR(CAM_ISP,
"Mem Allocation failed for Isp private context");
kfree(g_isp_dev.ctx);
g_isp_dev.ctx = NULL;
goto unregister;
}
rc = cam_isp_hw_mgr_init(compat_str, &hw_mgr_intf, &iommu_hdl,
g_isp_dev.isp_device_type);
if (rc != 0) {
CAM_ERR(CAM_ISP, "Can not initialized ISP HW manager!");
goto free_mem;
}
for (i = 0; i < g_isp_dev.max_context; i++) {
rc = cam_isp_context_init(&g_isp_dev.ctx_isp[i],
&g_isp_dev.ctx[i],
&node->crm_node_intf,
&node->hw_mgr_intf,
i,
g_isp_dev.isp_device_type, iommu_hdl);
if (rc) {
CAM_ERR(CAM_ISP, "ISP context init failed!");
goto free_mem;
}
}
if (g_isp_dev.isp_device_type == CAM_IFE_DEVICE_TYPE)
cam_common_register_evt_inject_cb(cam_isp_dev_evt_inject_cb,
CAM_COMMON_EVT_INJECT_HW_IFE);
else
cam_common_register_evt_inject_cb(cam_isp_dev_evt_inject_cb,
CAM_COMMON_EVT_INJECT_HW_TFE);
rc = cam_node_init(node, &hw_mgr_intf, g_isp_dev.ctx,
g_isp_dev.max_context, CAM_ISP_DEV_NAME);
if (rc) {
CAM_ERR(CAM_ISP, "ISP node init failed!");
goto free_mem;
}
node->sd_handler = cam_isp_subdev_close_internal;
cam_smmu_set_client_page_fault_handler(iommu_hdl,
cam_isp_dev_iommu_fault_handler, node);
mutex_init(&g_isp_dev.isp_mutex);
CAM_DBG(CAM_ISP, "Component bound successfully");
return 0;
free_mem:
kfree(g_isp_dev.ctx);
g_isp_dev.ctx = NULL;
kfree(g_isp_dev.ctx_isp);
g_isp_dev.ctx_isp = NULL;
unregister:
rc = cam_subdev_remove(&g_isp_dev.sd);
err:
return rc;
}
static void cam_isp_dev_component_unbind(struct device *dev,
struct device *master_dev, void *data)
{
int rc = 0;
int i;
const char *compat_str = NULL;
struct platform_device *pdev = to_platform_device(dev);
of_property_read_string_index(pdev->dev.of_node, "arch-compat", 0,
(const char **)&compat_str);
cam_isp_hw_mgr_deinit(compat_str);
/* clean up resources */
for (i = 0; i < g_isp_dev.max_context; i++) {
rc = cam_isp_context_deinit(&g_isp_dev.ctx_isp[i]);
if (rc)
CAM_ERR(CAM_ISP, "ISP context %d deinit failed",
i);
}
kfree(g_isp_dev.ctx);
g_isp_dev.ctx = NULL;
kfree(g_isp_dev.ctx_isp);
g_isp_dev.ctx_isp = NULL;
rc = cam_subdev_remove(&g_isp_dev.sd);
if (rc)
CAM_ERR(CAM_ISP, "Unregister failed rc: %d", rc);
memset(&g_isp_dev, 0, sizeof(g_isp_dev));
}
const static struct component_ops cam_isp_dev_component_ops = {
.bind = cam_isp_dev_component_bind,
.unbind = cam_isp_dev_component_unbind,
};
static int cam_isp_dev_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &cam_isp_dev_component_ops);
return 0;
}
static int cam_isp_dev_probe(struct platform_device *pdev)
{
int rc = 0;
CAM_DBG(CAM_ISP, "Adding ISP dev component");
rc = component_add(&pdev->dev, &cam_isp_dev_component_ops);
if (rc)
CAM_ERR(CAM_ISP, "failed to add component rc: %d", rc);
return rc;
}
struct platform_driver isp_driver = {
.probe = cam_isp_dev_probe,
.remove = cam_isp_dev_remove,
.driver = {
.name = "cam_isp",
.owner = THIS_MODULE,
.of_match_table = cam_isp_dt_match,
.suppress_bind_attrs = true,
},
};
int cam_isp_dev_init_module(void)
{
return platform_driver_register(&isp_driver);
}
void cam_isp_dev_exit_module(void)
{
platform_driver_unregister(&isp_driver);
}
MODULE_DESCRIPTION("MSM ISP driver");
MODULE_LICENSE("GPL v2");