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/* Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/debugfs.h>
#include <linux/videodev2.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include "cam_mem_mgr.h"
#include "cam_sync_api.h"
#include "cam_jpeg_context.h"
#include "cam_context_utils.h"
#include "cam_debug_util.h"
#include "cam_packet_util.h"
static const char jpeg_dev_name[] = "cam-jpeg";
static int cam_jpeg_context_dump_active_request(void *data, unsigned long iova,
uint32_t buf_info)
{
struct cam_context *ctx = (struct cam_context *)data;
struct cam_ctx_request *req = NULL;
struct cam_ctx_request *req_temp = NULL;
struct cam_hw_mgr_dump_pf_data *pf_dbg_entry = NULL;
int rc = 0;
int closest_port;
bool b_mem_found = false;
if (!ctx) {
CAM_ERR(CAM_JPEG, "Invalid ctx");
return -EINVAL;
}
CAM_INFO(CAM_JPEG, "iommu fault for jpeg ctx %d state %d",
ctx->ctx_id, ctx->state);
list_for_each_entry_safe(req, req_temp,
&ctx->active_req_list, list) {
pf_dbg_entry = &(req->pf_data);
closest_port = -1;
CAM_INFO(CAM_JPEG, "req_id : %lld ", req->request_id);
rc = cam_context_dump_pf_info_to_hw(ctx, pf_dbg_entry->packet,
iova, buf_info, &b_mem_found);
if (rc)
CAM_ERR(CAM_JPEG, "Failed to dump pf info");
if (b_mem_found)
CAM_ERR(CAM_JPEG, "Found page fault in req %lld %d",
req->request_id, rc);
}
return rc;
}
static int __cam_jpeg_ctx_acquire_dev_in_available(struct cam_context *ctx,
struct cam_acquire_dev_cmd *cmd)
{
int rc;
rc = cam_context_acquire_dev_to_hw(ctx, cmd);
if (rc)
CAM_ERR(CAM_JPEG, "Unable to Acquire device %d", rc);
else
ctx->state = CAM_CTX_ACQUIRED;
return rc;
}
static int __cam_jpeg_ctx_release_dev_in_acquired(struct cam_context *ctx,
struct cam_release_dev_cmd *cmd)
{
int rc;
rc = cam_context_release_dev_to_hw(ctx, cmd);
if (rc)
CAM_ERR(CAM_JPEG, "Unable to release device %d", rc);
ctx->state = CAM_CTX_AVAILABLE;
return rc;
}
static int __cam_jpeg_ctx_flush_dev_in_acquired(struct cam_context *ctx,
struct cam_flush_dev_cmd *cmd)
{
int rc;
rc = cam_context_flush_dev_to_hw(ctx, cmd);
if (rc)
CAM_ERR(CAM_ICP, "Failed to flush device");
return rc;
}
static int __cam_jpeg_ctx_config_dev_in_acquired(struct cam_context *ctx,
struct cam_config_dev_cmd *cmd)
{
return cam_context_prepare_dev_to_hw(ctx, cmd);
}
static int __cam_jpeg_ctx_handle_buf_done_in_acquired(void *ctx,
uint32_t evt_id, void *done)
{
return cam_context_buf_done_from_hw(ctx, done, evt_id);
}
static int __cam_jpeg_ctx_stop_dev_in_acquired(struct cam_context *ctx,
struct cam_start_stop_dev_cmd *cmd)
{
int rc;
rc = cam_context_stop_dev_to_hw(ctx);
if (rc) {
CAM_ERR(CAM_JPEG, "Failed in Stop dev, rc=%d", rc);
return rc;
}
return rc;
}
/* top state machine */
static struct cam_ctx_ops
cam_jpeg_ctx_state_machine[CAM_CTX_STATE_MAX] = {
/* Uninit */
{
.ioctl_ops = { },
.crm_ops = { },
.irq_ops = NULL,
},
/* Available */
{
.ioctl_ops = {
.acquire_dev = __cam_jpeg_ctx_acquire_dev_in_available,
},
.crm_ops = { },
.irq_ops = NULL,
},
/* Acquired */
{
.ioctl_ops = {
.release_dev = __cam_jpeg_ctx_release_dev_in_acquired,
.config_dev = __cam_jpeg_ctx_config_dev_in_acquired,
.stop_dev = __cam_jpeg_ctx_stop_dev_in_acquired,
.flush_dev = __cam_jpeg_ctx_flush_dev_in_acquired,
},
.crm_ops = { },
.irq_ops = __cam_jpeg_ctx_handle_buf_done_in_acquired,
.pagefault_ops = cam_jpeg_context_dump_active_request,
},
};
int cam_jpeg_context_init(struct cam_jpeg_context *ctx,
struct cam_context *ctx_base,
struct cam_hw_mgr_intf *hw_intf,
uint32_t ctx_id)
{
int rc;
int i;
if (!ctx || !ctx_base) {
CAM_ERR(CAM_JPEG, "Invalid Context");
rc = -EFAULT;
goto err;
}
memset(ctx, 0, sizeof(*ctx));
ctx->base = ctx_base;
for (i = 0; i < CAM_CTX_REQ_MAX; i++)
ctx->req_base[i].req_priv = ctx;
rc = cam_context_init(ctx_base, jpeg_dev_name, CAM_JPEG, ctx_id,
NULL, hw_intf, ctx->req_base, CAM_CTX_REQ_MAX);
if (rc) {
CAM_ERR(CAM_JPEG, "Camera Context Base init failed");
goto err;
}
ctx_base->state_machine = cam_jpeg_ctx_state_machine;
ctx_base->ctx_priv = ctx;
err:
return rc;
}
int cam_jpeg_context_deinit(struct cam_jpeg_context *ctx)
{
if (!ctx || !ctx->base) {
CAM_ERR(CAM_JPEG, "Invalid params: %pK", ctx);
return -EINVAL;
}
cam_context_deinit(ctx->base);
memset(ctx, 0, sizeof(*ctx));
return 0;
}
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