--- /dev/null
+/*
+ * Copyright (C) 2012 Samsung Electronics Co.Ltd
+ * Authors:
+ * Eunchul Kim <chulspro.kim@samsung.com>
+ * Jinyoung Jeon <jy0.jeon@samsung.com>
+ * Sangmin Lee <lsmin.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/types.h>
+#include <linux/clk.h>
+#include <linux/pm_runtime.h>
+
+#include <drm/drmP.h>
+#include <drm/exynos_drm.h>
+#include "exynos_drm_drv.h"
+#include "exynos_drm_gem.h"
+#include "exynos_drm_ipp.h"
+#include "exynos_drm_iommu.h"
+
+/*
+ * IPP stands for Image Post Processing and
+ * supports image scaler/rotator and input/output DMA operations.
+ * using FIMC, GSC, Rotator, so on.
+ * IPP is integration device driver of same attribute h/w
+ */
+
+/*
+ * TODO
+ * 1. expand command control id.
+ * 2. integrate property and config.
+ * 3. removed send_event id check routine.
+ * 4. compare send_event id if needed.
+ * 5. free subdrv_remove notifier callback list if needed.
+ * 6. need to check subdrv_open about multi-open.
+ * 7. need to power_on implement power and sysmmu ctrl.
+ */
+
+#define get_ipp_context(dev) platform_get_drvdata(to_platform_device(dev))
+#define ipp_is_m2m_cmd(c) (c == IPP_CMD_M2M)
+
+/* platform device pointer for ipp device. */
+static struct platform_device *exynos_drm_ipp_pdev;
+
+/*
+ * A structure of event.
+ *
+ * @base: base of event.
+ * @event: ipp event.
+ */
+struct drm_exynos_ipp_send_event {
+ struct drm_pending_event base;
+ struct drm_exynos_ipp_event event;
+};
+
+/*
+ * A structure of memory node.
+ *
+ * @list: list head to memory queue information.
+ * @ops_id: id of operations.
+ * @prop_id: id of property.
+ * @buf_id: id of buffer.
+ * @buf_info: gem objects and dma address, size.
+ * @filp: a pointer to drm_file.
+ */
+struct drm_exynos_ipp_mem_node {
+ struct list_head list;
+ enum drm_exynos_ops_id ops_id;
+ u32 prop_id;
+ u32 buf_id;
+ struct drm_exynos_ipp_buf_info buf_info;
+};
+
+/*
+ * A structure of ipp context.
+ *
+ * @subdrv: prepare initialization using subdrv.
+ * @ipp_lock: lock for synchronization of access to ipp_idr.
+ * @prop_lock: lock for synchronization of access to prop_idr.
+ * @ipp_idr: ipp driver idr.
+ * @prop_idr: property idr.
+ * @event_workq: event work queue.
+ * @cmd_workq: command work queue.
+ */
+struct ipp_context {
+ struct exynos_drm_subdrv subdrv;
+ struct mutex ipp_lock;
+ struct mutex prop_lock;
+ struct idr ipp_idr;
+ struct idr prop_idr;
+ struct workqueue_struct *event_workq;
+ struct workqueue_struct *cmd_workq;
+};
+
+static LIST_HEAD(exynos_drm_ippdrv_list);
+static DEFINE_MUTEX(exynos_drm_ippdrv_lock);
+static BLOCKING_NOTIFIER_HEAD(exynos_drm_ippnb_list);
+
+int exynos_platform_device_ipp_register(void)
+{
+ struct platform_device *pdev;
+
+ if (exynos_drm_ipp_pdev)
+ return -EEXIST;
+
+ pdev = platform_device_register_simple("exynos-drm-ipp", -1, NULL, 0);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+
+ exynos_drm_ipp_pdev = pdev;
+
+ return 0;
+}
+
+void exynos_platform_device_ipp_unregister(void)
+{
+ if (exynos_drm_ipp_pdev) {
+ platform_device_unregister(exynos_drm_ipp_pdev);
+ exynos_drm_ipp_pdev = NULL;
+ }
+}
+
+int exynos_drm_ippdrv_register(struct exynos_drm_ippdrv *ippdrv)
+{
+ mutex_lock(&exynos_drm_ippdrv_lock);
+ list_add_tail(&ippdrv->drv_list, &exynos_drm_ippdrv_list);
+ mutex_unlock(&exynos_drm_ippdrv_lock);
+
+ return 0;
+}
+
+int exynos_drm_ippdrv_unregister(struct exynos_drm_ippdrv *ippdrv)
+{
+ mutex_lock(&exynos_drm_ippdrv_lock);
+ list_del(&ippdrv->drv_list);
+ mutex_unlock(&exynos_drm_ippdrv_lock);
+
+ return 0;
+}
+
+static int ipp_create_id(struct idr *id_idr, struct mutex *lock, void *obj)
+{
+ int ret;
+
+ mutex_lock(lock);
+ ret = idr_alloc(id_idr, obj, 1, 0, GFP_KERNEL);
+ mutex_unlock(lock);
+
+ return ret;
+}
+
+static void ipp_remove_id(struct idr *id_idr, struct mutex *lock, u32 id)
+{
+ mutex_lock(lock);
+ idr_remove(id_idr, id);
+ mutex_unlock(lock);
+}
+
+static void *ipp_find_obj(struct idr *id_idr, struct mutex *lock, u32 id)
+{
+ void *obj;
+
+ mutex_lock(lock);
+ obj = idr_find(id_idr, id);
+ mutex_unlock(lock);
+
+ return obj;
+}
+
+static int ipp_check_driver(struct exynos_drm_ippdrv *ippdrv,
+ struct drm_exynos_ipp_property *property)
+{
+ if (ippdrv->dedicated || (!ipp_is_m2m_cmd(property->cmd) &&
+ !pm_runtime_suspended(ippdrv->dev)))
+ return -EBUSY;
+
+ if (ippdrv->check_property &&
+ ippdrv->check_property(ippdrv->dev, property))
+ return -EINVAL;
+
+ return 0;
+}
+
+static struct exynos_drm_ippdrv *ipp_find_driver(struct ipp_context *ctx,
+ struct drm_exynos_ipp_property *property)
+{
+ struct exynos_drm_ippdrv *ippdrv;
+ u32 ipp_id = property->ipp_id;
+ int ret;
+
+ if (ipp_id) {
+ ippdrv = ipp_find_obj(&ctx->ipp_idr, &ctx->ipp_lock, ipp_id);
+ if (!ippdrv) {
+ DRM_DEBUG("ipp%d driver not found\n", ipp_id);
+ return ERR_PTR(-ENODEV);
+ }
+
+ ret = ipp_check_driver(ippdrv, property);
+ if (ret < 0) {
+ DRM_DEBUG("ipp%d driver check error %d\n", ipp_id, ret);
+ return ERR_PTR(ret);
+ }
+
+ return ippdrv;
+ } else {
+ list_for_each_entry(ippdrv, &exynos_drm_ippdrv_list, drv_list) {
+ ret = ipp_check_driver(ippdrv, property);
+ if (ret == 0)
+ return ippdrv;
+ }
+
+ DRM_DEBUG("cannot find driver suitable for given property.\n");
+ }
+
+ return ERR_PTR(-ENODEV);
+}
+
+static struct exynos_drm_ippdrv *ipp_find_drv_by_handle(u32 prop_id)
+{
+ struct exynos_drm_ippdrv *ippdrv;
+ struct drm_exynos_ipp_cmd_node *c_node;
+ int count = 0;
+
+ DRM_DEBUG_KMS("prop_id[%d]\n", prop_id);
+
+ /*
+ * This case is search ipp driver by prop_id handle.
+ * sometimes, ipp subsystem find driver by prop_id.
+ * e.g PAUSE state, queue buf, command control.
+ */
+ list_for_each_entry(ippdrv, &exynos_drm_ippdrv_list, drv_list) {
+ DRM_DEBUG_KMS("count[%d]ippdrv[0x%x]\n", count++, (int)ippdrv);
+
+ mutex_lock(&ippdrv->cmd_lock);
+ list_for_each_entry(c_node, &ippdrv->cmd_list, list) {
+ if (c_node->property.prop_id == prop_id) {
+ mutex_unlock(&ippdrv->cmd_lock);
+ return ippdrv;
+ }
+ }
+ mutex_unlock(&ippdrv->cmd_lock);
+ }
+
+ return ERR_PTR(-ENODEV);
+}
+
+int exynos_drm_ipp_get_property(struct drm_device *drm_dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_exynos_file_private *file_priv = file->driver_priv;
+ struct device *dev = file_priv->ipp_dev;
+ struct ipp_context *ctx = get_ipp_context(dev);
+ struct drm_exynos_ipp_prop_list *prop_list = data;
+ struct exynos_drm_ippdrv *ippdrv;
+ int count = 0;
+
+ if (!ctx) {
+ DRM_ERROR("invalid context.\n");
+ return -EINVAL;
+ }
+
+ if (!prop_list) {
+ DRM_ERROR("invalid property parameter.\n");
+ return -EINVAL;
+ }
+
+ DRM_DEBUG_KMS("ipp_id[%d]\n", prop_list->ipp_id);
+
+ if (!prop_list->ipp_id) {
+ list_for_each_entry(ippdrv, &exynos_drm_ippdrv_list, drv_list)
+ count++;
+
+ /*
+ * Supports ippdrv list count for user application.
+ * First step user application getting ippdrv count.
+ * and second step getting ippdrv capability using ipp_id.
+ */
+ prop_list->count = count;
+ } else {
+ /*
+ * Getting ippdrv capability by ipp_id.
+ * some device not supported wb, output interface.
+ * so, user application detect correct ipp driver
+ * using this ioctl.
+ */
+ ippdrv = ipp_find_obj(&ctx->ipp_idr, &ctx->ipp_lock,
+ prop_list->ipp_id);
+ if (!ippdrv) {
+ DRM_ERROR("not found ipp%d driver.\n",
+ prop_list->ipp_id);
+ return -ENODEV;
+ }
+
+ *prop_list = ippdrv->prop_list;
+ }
+
+ return 0;
+}
+
+static void ipp_print_property(struct drm_exynos_ipp_property *property,
+ int idx)
+{
+ struct drm_exynos_ipp_config *config = &property->config[idx];
+ struct drm_exynos_pos *pos = &config->pos;
+ struct drm_exynos_sz *sz = &config->sz;
+
+ DRM_DEBUG_KMS("prop_id[%d]ops[%s]fmt[0x%x]\n",
+ property->prop_id, idx ? "dst" : "src", config->fmt);
+
+ DRM_DEBUG_KMS("pos[%d %d %d %d]sz[%d %d]f[%d]r[%d]\n",
+ pos->x, pos->y, pos->w, pos->h,
+ sz->hsize, sz->vsize, config->flip, config->degree);
+}
+
+static struct drm_exynos_ipp_cmd_work *ipp_create_cmd_work(void)
+{
+ struct drm_exynos_ipp_cmd_work *cmd_work;
+
+ cmd_work = kzalloc(sizeof(*cmd_work), GFP_KERNEL);
+ if (!cmd_work)
+ return ERR_PTR(-ENOMEM);
+
+ INIT_WORK((struct work_struct *)cmd_work, ipp_sched_cmd);
+
+ return cmd_work;
+}
+
+static struct drm_exynos_ipp_event_work *ipp_create_event_work(void)
+{
+ struct drm_exynos_ipp_event_work *event_work;
+
+ event_work = kzalloc(sizeof(*event_work), GFP_KERNEL);
+ if (!event_work)
+ return ERR_PTR(-ENOMEM);
+
+ INIT_WORK(&event_work->work, ipp_sched_event);
+
+ return event_work;
+}
+
+int exynos_drm_ipp_set_property(struct drm_device *drm_dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_exynos_file_private *file_priv = file->driver_priv;
+ struct device *dev = file_priv->ipp_dev;
+ struct ipp_context *ctx = get_ipp_context(dev);
+ struct drm_exynos_ipp_property *property = data;
+ struct exynos_drm_ippdrv *ippdrv;
+ struct drm_exynos_ipp_cmd_node *c_node;
+ u32 prop_id;
+ int ret, i;
+
+ if (!ctx) {
+ DRM_ERROR("invalid context.\n");
+ return -EINVAL;
+ }
+
+ if (!property) {
+ DRM_ERROR("invalid property parameter.\n");
+ return -EINVAL;
+ }
+
+ prop_id = property->prop_id;
+
+ /*
+ * This is log print for user application property.
+ * user application set various property.
+ */
+ for_each_ipp_ops(i)
+ ipp_print_property(property, i);
+
+ /*
+ * In case prop_id is not zero try to set existing property.
+ */
+ if (prop_id) {
+ c_node = ipp_find_obj(&ctx->prop_idr, &ctx->prop_lock, prop_id);
+
+ if (!c_node || c_node->filp != file) {
+ DRM_DEBUG_KMS("prop_id[%d] not found\n", prop_id);
+ return -EINVAL;
+ }
+
+ if (c_node->state != IPP_STATE_STOP) {
+ DRM_DEBUG_KMS("prop_id[%d] not stopped\n", prop_id);
+ return -EINVAL;
+ }
+
+ c_node->property = *property;
+
+ return 0;
+ }
+
+ /* find ipp driver using ipp id */
+ ippdrv = ipp_find_driver(ctx, property);
+ if (IS_ERR(ippdrv)) {
+ DRM_ERROR("failed to get ipp driver.\n");
+ return -EINVAL;
+ }
+
+ /* allocate command node */
+ c_node = kzalloc(sizeof(*c_node), GFP_KERNEL);
+ if (!c_node)
+ return -ENOMEM;
+
+ ret = ipp_create_id(&ctx->prop_idr, &ctx->prop_lock, c_node);
+ if (ret < 0) {
+ DRM_ERROR("failed to create id.\n");
+ goto err_clear;
+ }
+ property->prop_id = ret;
+
+ DRM_DEBUG_KMS("created prop_id[%d]cmd[%d]ippdrv[0x%x]\n",
+ property->prop_id, property->cmd, (int)ippdrv);
+
+ /* stored property information and ippdrv in private data */
+ c_node->property = *property;
+ c_node->state = IPP_STATE_IDLE;
+ c_node->filp = file;
+
+ c_node->start_work = ipp_create_cmd_work();
+ if (IS_ERR(c_node->start_work)) {
+ DRM_ERROR("failed to create start work.\n");
+ ret = PTR_ERR(c_node->start_work);
+ goto err_remove_id;
+ }
+
+ c_node->stop_work = ipp_create_cmd_work();
+ if (IS_ERR(c_node->stop_work)) {
+ DRM_ERROR("failed to create stop work.\n");
+ ret = PTR_ERR(c_node->stop_work);
+ goto err_free_start;
+ }
+
+ c_node->event_work = ipp_create_event_work();
+ if (IS_ERR(c_node->event_work)) {
+ DRM_ERROR("failed to create event work.\n");
+ ret = PTR_ERR(c_node->event_work);
+ goto err_free_stop;
+ }
+
+ mutex_init(&c_node->lock);
+ mutex_init(&c_node->mem_lock);
+ mutex_init(&c_node->event_lock);
+
+ init_completion(&c_node->start_complete);
+ init_completion(&c_node->stop_complete);
+
+ for_each_ipp_ops(i)
+ INIT_LIST_HEAD(&c_node->mem_list[i]);
+
+ INIT_LIST_HEAD(&c_node->event_list);
+ mutex_lock(&ippdrv->cmd_lock);
+ list_add_tail(&c_node->list, &ippdrv->cmd_list);
+ mutex_unlock(&ippdrv->cmd_lock);
+
+ /* make dedicated state without m2m */
+ if (!ipp_is_m2m_cmd(property->cmd))
+ ippdrv->dedicated = true;
+
+ return 0;
+
+err_free_stop:
+ kfree(c_node->stop_work);
+err_free_start:
+ kfree(c_node->start_work);
+err_remove_id:
+ ipp_remove_id(&ctx->prop_idr, &ctx->prop_lock, property->prop_id);
+err_clear:
+ kfree(c_node);
+ return ret;
+}
+
+static int ipp_validate_mem_node(struct drm_device *drm_dev,
+ struct drm_exynos_ipp_mem_node *m_node,
+ struct drm_exynos_ipp_cmd_node *c_node)
+{
+ struct drm_exynos_ipp_config *ipp_cfg;
+ unsigned int num_plane;
+ unsigned long min_size, size;
+ unsigned int bpp;
+ int i;
+
+ /* The property id should already be varified */
+ ipp_cfg = &c_node->property.config[m_node->prop_id];
+ num_plane = drm_format_num_planes(ipp_cfg->fmt);
+
+ /**
+ * This is a rather simplified validation of a memory node.
+ * It basically verifies provided gem object handles
+ * and the buffer sizes with respect to current configuration.
+ * This is not the best that can be done
+ * but it seems more than enough
+ */
+ for (i = 0; i < num_plane; ++i) {
+ if (!m_node->buf_info.handles[i]) {
+ DRM_ERROR("invalid handle for plane %d\n", i);
+ return -EINVAL;
+ }
+ bpp = drm_format_plane_cpp(ipp_cfg->fmt, i);
+ min_size = (ipp_cfg->sz.hsize * ipp_cfg->sz.vsize * bpp) >> 3;
+ size = exynos_drm_gem_get_size(drm_dev,
+ m_node->buf_info.handles[i],
+ c_node->filp);
+ if (min_size > size) {
+ DRM_ERROR("invalid size for plane %d\n", i);
+ return -EINVAL;
+ }
+ }
+ return 0;
+}
+
+static int ipp_put_mem_node(struct drm_device *drm_dev,
+ struct drm_exynos_ipp_cmd_node *c_node,
+ struct drm_exynos_ipp_mem_node *m_node)
+{
+ int i;
+
+ DRM_DEBUG_KMS("node[0x%x]\n", (int)m_node);
+
+ if (!m_node) {
+ DRM_ERROR("invalid dequeue node.\n");
+ return -EFAULT;
+ }
+
+ DRM_DEBUG_KMS("ops_id[%d]\n", m_node->ops_id);
+
+ /* put gem buffer */
+ for_each_ipp_planar(i) {
+ unsigned long handle = m_node->buf_info.handles[i];
+ if (handle)
+ exynos_drm_gem_put_dma_addr(drm_dev, handle,
+ c_node->filp);
+ }
+
+ list_del(&m_node->list);
+ kfree(m_node);
+
+ return 0;
+}
+
+static struct drm_exynos_ipp_mem_node
+ *ipp_get_mem_node(struct drm_device *drm_dev,
+ struct drm_exynos_ipp_cmd_node *c_node,
+ struct drm_exynos_ipp_queue_buf *qbuf)
+{
+ struct drm_exynos_ipp_mem_node *m_node;
+ struct drm_exynos_ipp_buf_info *buf_info;
+ int i;
+
+ m_node = kzalloc(sizeof(*m_node), GFP_KERNEL);
+ if (!m_node)
+ return ERR_PTR(-ENOMEM);
+
+ buf_info = &m_node->buf_info;
+
+ /* operations, buffer id */
+ m_node->ops_id = qbuf->ops_id;
+ m_node->prop_id = qbuf->prop_id;
+ m_node->buf_id = qbuf->buf_id;
+ INIT_LIST_HEAD(&m_node->list);
+
+ DRM_DEBUG_KMS("m_node[0x%x]ops_id[%d]\n", (int)m_node, qbuf->ops_id);
+ DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]\n", qbuf->prop_id, m_node->buf_id);
+
+ for_each_ipp_planar(i) {
+ DRM_DEBUG_KMS("i[%d]handle[0x%x]\n", i, qbuf->handle[i]);
+
+ /* get dma address by handle */
+ if (qbuf->handle[i]) {
+ dma_addr_t *addr;
+
+ addr = exynos_drm_gem_get_dma_addr(drm_dev,
+ qbuf->handle[i], c_node->filp);
+ if (IS_ERR(addr)) {
+ DRM_ERROR("failed to get addr.\n");
+ ipp_put_mem_node(drm_dev, c_node, m_node);
+ return ERR_PTR(-EFAULT);
+ }
+
+ buf_info->handles[i] = qbuf->handle[i];
+ buf_info->base[i] = *addr;
+ DRM_DEBUG_KMS("i[%d]base[0x%x]hd[0x%lx]\n", i,
+ buf_info->base[i], buf_info->handles[i]);
+ }
+ }
+
+ mutex_lock(&c_node->mem_lock);
+ if (ipp_validate_mem_node(drm_dev, m_node, c_node)) {
+ ipp_put_mem_node(drm_dev, c_node, m_node);
+ mutex_unlock(&c_node->mem_lock);
+ return ERR_PTR(-EFAULT);
+ }
+ list_add_tail(&m_node->list, &c_node->mem_list[qbuf->ops_id]);
+ mutex_unlock(&c_node->mem_lock);
+
+ return m_node;
+}
+
+static void ipp_clean_mem_nodes(struct drm_device *drm_dev,
+ struct drm_exynos_ipp_cmd_node *c_node, int ops)
+{
+ struct drm_exynos_ipp_mem_node *m_node, *tm_node;
+ struct list_head *head = &c_node->mem_list[ops];
+
+ mutex_lock(&c_node->mem_lock);
+
+ list_for_each_entry_safe(m_node, tm_node, head, list) {
+ int ret;
+
+ ret = ipp_put_mem_node(drm_dev, c_node, m_node);
+ if (ret)
+ DRM_ERROR("failed to put m_node.\n");
+ }
+
+ mutex_unlock(&c_node->mem_lock);
+}
+
+static void ipp_free_event(struct drm_pending_event *event)
+{
+ kfree(event);
+}
+
+static int ipp_get_event(struct drm_device *drm_dev,
+ struct drm_exynos_ipp_cmd_node *c_node,
+ struct drm_exynos_ipp_queue_buf *qbuf)
+{
+ struct drm_exynos_ipp_send_event *e;
+ unsigned long flags;
+
+ DRM_DEBUG_KMS("ops_id[%d]buf_id[%d]\n", qbuf->ops_id, qbuf->buf_id);
+
+ e = kzalloc(sizeof(*e), GFP_KERNEL);
+ if (!e) {
+ spin_lock_irqsave(&drm_dev->event_lock, flags);
+ c_node->filp->event_space += sizeof(e->event);
+ spin_unlock_irqrestore(&drm_dev->event_lock, flags);
+ return -ENOMEM;
+ }
+
+ /* make event */
+ e->event.base.type = DRM_EXYNOS_IPP_EVENT;
+ e->event.base.length = sizeof(e->event);
+ e->event.user_data = qbuf->user_data;
+ e->event.prop_id = qbuf->prop_id;
+ e->event.buf_id[EXYNOS_DRM_OPS_DST] = qbuf->buf_id;
+ e->base.event = &e->event.base;
+ e->base.file_priv = c_node->filp;
+ e->base.destroy = ipp_free_event;
+ mutex_lock(&c_node->event_lock);
+ list_add_tail(&e->base.link, &c_node->event_list);
+ mutex_unlock(&c_node->event_lock);
+
+ return 0;
+}
+
+static void ipp_put_event(struct drm_exynos_ipp_cmd_node *c_node,
+ struct drm_exynos_ipp_queue_buf *qbuf)
+{
+ struct drm_exynos_ipp_send_event *e, *te;
+ int count = 0;
+
+ mutex_lock(&c_node->event_lock);
+ list_for_each_entry_safe(e, te, &c_node->event_list, base.link) {
+ DRM_DEBUG_KMS("count[%d]e[0x%x]\n", count++, (int)e);
+
+ /*
+ * qbuf == NULL condition means all event deletion.
+ * stop operations want to delete all event list.
+ * another case delete only same buf id.
+ */
+ if (!qbuf) {
+ /* delete list */
+ list_del(&e->base.link);
+ kfree(e);
+ }
+
+ /* compare buffer id */
+ if (qbuf && (qbuf->buf_id ==
+ e->event.buf_id[EXYNOS_DRM_OPS_DST])) {
+ /* delete list */
+ list_del(&e->base.link);
+ kfree(e);
+ goto out_unlock;
+ }
+ }
+
+out_unlock:
+ mutex_unlock(&c_node->event_lock);
+ return;
+}
+
+static void ipp_clean_cmd_node(struct ipp_context *ctx,
+ struct drm_exynos_ipp_cmd_node *c_node)
+{
+ int i;
+
+ /* cancel works */
+ cancel_work_sync(&c_node->start_work->work);
+ cancel_work_sync(&c_node->stop_work->work);
+ cancel_work_sync(&c_node->event_work->work);
+
+ /* put event */
+ ipp_put_event(c_node, NULL);
+
+ for_each_ipp_ops(i)
+ ipp_clean_mem_nodes(ctx->subdrv.drm_dev, c_node, i);
+
+ /* delete list */
+ list_del(&c_node->list);
+
+ ipp_remove_id(&ctx->prop_idr, &ctx->prop_lock,
+ c_node->property.prop_id);
+
+ /* destroy mutex */
+ mutex_destroy(&c_node->lock);
+ mutex_destroy(&c_node->mem_lock);
+ mutex_destroy(&c_node->event_lock);
+
+ /* free command node */
+ kfree(c_node->start_work);
+ kfree(c_node->stop_work);
+ kfree(c_node->event_work);
+ kfree(c_node);
+}
+
+static bool ipp_check_mem_list(struct drm_exynos_ipp_cmd_node *c_node)
+{
+ switch (c_node->property.cmd) {
+ case IPP_CMD_WB:
+ return !list_empty(&c_node->mem_list[EXYNOS_DRM_OPS_DST]);
+ case IPP_CMD_OUTPUT:
+ return !list_empty(&c_node->mem_list[EXYNOS_DRM_OPS_SRC]);
+ case IPP_CMD_M2M:
+ default:
+ return !list_empty(&c_node->mem_list[EXYNOS_DRM_OPS_SRC]) &&
+ !list_empty(&c_node->mem_list[EXYNOS_DRM_OPS_DST]);
+ }
+}
+
+static struct drm_exynos_ipp_mem_node
+ *ipp_find_mem_node(struct drm_exynos_ipp_cmd_node *c_node,
+ struct drm_exynos_ipp_queue_buf *qbuf)
+{
+ struct drm_exynos_ipp_mem_node *m_node;
+ struct list_head *head;
+ int count = 0;
+
+ DRM_DEBUG_KMS("buf_id[%d]\n", qbuf->buf_id);
+
+ /* source/destination memory list */
+ head = &c_node->mem_list[qbuf->ops_id];
+
+ /* find memory node from memory list */
+ list_for_each_entry(m_node, head, list) {
+ DRM_DEBUG_KMS("count[%d]m_node[0x%x]\n", count++, (int)m_node);
+
+ /* compare buffer id */
+ if (m_node->buf_id == qbuf->buf_id)
+ return m_node;
+ }
+
+ return NULL;
+}
+
+static int ipp_set_mem_node(struct exynos_drm_ippdrv *ippdrv,
+ struct drm_exynos_ipp_cmd_node *c_node,
+ struct drm_exynos_ipp_mem_node *m_node)
+{
+ struct exynos_drm_ipp_ops *ops = NULL;
+ int ret = 0;
+
+ DRM_DEBUG_KMS("node[0x%x]\n", (int)m_node);
+
+ if (!m_node) {
+ DRM_ERROR("invalid queue node.\n");
+ return -EFAULT;
+ }
+
+ DRM_DEBUG_KMS("ops_id[%d]\n", m_node->ops_id);
+
+ /* get operations callback */
+ ops = ippdrv->ops[m_node->ops_id];
+ if (!ops) {
+ DRM_ERROR("not support ops.\n");
+ return -EFAULT;
+ }
+
+ /* set address and enable irq */
+ if (ops->set_addr) {
+ ret = ops->set_addr(ippdrv->dev, &m_node->buf_info,
+ m_node->buf_id, IPP_BUF_ENQUEUE);
+ if (ret) {
+ DRM_ERROR("failed to set addr.\n");
+ return ret;
+ }
+ }
+
+ return ret;
+}
+
+static void ipp_handle_cmd_work(struct device *dev,
+ struct exynos_drm_ippdrv *ippdrv,
+ struct drm_exynos_ipp_cmd_work *cmd_work,
+ struct drm_exynos_ipp_cmd_node *c_node)
+{
+ struct ipp_context *ctx = get_ipp_context(dev);
+
+ cmd_work->ippdrv = ippdrv;
+ cmd_work->c_node = c_node;
+ queue_work(ctx->cmd_workq, &cmd_work->work);
+}
+
+static int ipp_queue_buf_with_run(struct device *dev,
+ struct drm_exynos_ipp_cmd_node *c_node,
+ struct drm_exynos_ipp_mem_node *m_node,
+ struct drm_exynos_ipp_queue_buf *qbuf)
+{
+ struct exynos_drm_ippdrv *ippdrv;
+ struct drm_exynos_ipp_property *property;
+ struct exynos_drm_ipp_ops *ops;
+ int ret;
+
+ ippdrv = ipp_find_drv_by_handle(qbuf->prop_id);
+ if (IS_ERR(ippdrv)) {
+ DRM_ERROR("failed to get ipp driver.\n");
+ return -EFAULT;
+ }
+
+ ops = ippdrv->ops[qbuf->ops_id];
+ if (!ops) {
+ DRM_ERROR("failed to get ops.\n");
+ return -EFAULT;
+ }
+
+ property = &c_node->property;
+
+ if (c_node->state != IPP_STATE_START) {
+ DRM_DEBUG_KMS("bypass for invalid state.\n");
+ return 0;
+ }
+
+ mutex_lock(&c_node->mem_lock);
+ if (!ipp_check_mem_list(c_node)) {
+ mutex_unlock(&c_node->mem_lock);
+ DRM_DEBUG_KMS("empty memory.\n");
+ return 0;
+ }
+
+ /*
+ * If set destination buffer and enabled clock,
+ * then m2m operations need start operations at queue_buf
+ */
+ if (ipp_is_m2m_cmd(property->cmd)) {
+ struct drm_exynos_ipp_cmd_work *cmd_work = c_node->start_work;
+
+ cmd_work->ctrl = IPP_CTRL_PLAY;
+ ipp_handle_cmd_work(dev, ippdrv, cmd_work, c_node);
+ } else {
+ ret = ipp_set_mem_node(ippdrv, c_node, m_node);
+ if (ret) {
+ mutex_unlock(&c_node->mem_lock);
+ DRM_ERROR("failed to set m node.\n");
+ return ret;
+ }
+ }
+ mutex_unlock(&c_node->mem_lock);
+
+ return 0;
+}
+
+static void ipp_clean_queue_buf(struct drm_device *drm_dev,
+ struct drm_exynos_ipp_cmd_node *c_node,
+ struct drm_exynos_ipp_queue_buf *qbuf)
+{
+ struct drm_exynos_ipp_mem_node *m_node, *tm_node;
+
+ /* delete list */
+ mutex_lock(&c_node->mem_lock);
+ list_for_each_entry_safe(m_node, tm_node,
+ &c_node->mem_list[qbuf->ops_id], list) {
+ if (m_node->buf_id == qbuf->buf_id &&
+ m_node->ops_id == qbuf->ops_id)
+ ipp_put_mem_node(drm_dev, c_node, m_node);
+ }
+ mutex_unlock(&c_node->mem_lock);
+}
+
+int exynos_drm_ipp_queue_buf(struct drm_device *drm_dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_exynos_file_private *file_priv = file->driver_priv;
+ struct device *dev = file_priv->ipp_dev;
+ struct ipp_context *ctx = get_ipp_context(dev);
+ struct drm_exynos_ipp_queue_buf *qbuf = data;
+ struct drm_exynos_ipp_cmd_node *c_node;
+ struct drm_exynos_ipp_mem_node *m_node;
+ int ret;
+
+ if (!qbuf) {
+ DRM_ERROR("invalid buf parameter.\n");
+ return -EINVAL;
+ }
+
+ if (qbuf->ops_id >= EXYNOS_DRM_OPS_MAX) {
+ DRM_ERROR("invalid ops parameter.\n");
+ return -EINVAL;
+ }
+
+ DRM_DEBUG_KMS("prop_id[%d]ops_id[%s]buf_id[%d]buf_type[%d]\n",
+ qbuf->prop_id, qbuf->ops_id ? "dst" : "src",
+ qbuf->buf_id, qbuf->buf_type);
+
+ /* find command node */
+ c_node = ipp_find_obj(&ctx->prop_idr, &ctx->prop_lock,
+ qbuf->prop_id);
+ if (!c_node || c_node->filp != file) {
+ DRM_ERROR("failed to get command node.\n");
+ return -ENODEV;
+ }
+
+ /* buffer control */
+ switch (qbuf->buf_type) {
+ case IPP_BUF_ENQUEUE:
+ /* get memory node */
+ m_node = ipp_get_mem_node(drm_dev, c_node, qbuf);
+ if (IS_ERR(m_node)) {
+ DRM_ERROR("failed to get m_node.\n");
+ return PTR_ERR(m_node);
+ }
+
+ /*
+ * first step get event for destination buffer.
+ * and second step when M2M case run with destination buffer
+ * if needed.
+ */
+ if (qbuf->ops_id == EXYNOS_DRM_OPS_DST) {
+ /* get event for destination buffer */
+ ret = ipp_get_event(drm_dev, c_node, qbuf);
+ if (ret) {
+ DRM_ERROR("failed to get event.\n");
+ goto err_clean_node;
+ }
+
+ /*
+ * M2M case run play control for streaming feature.
+ * other case set address and waiting.
+ */
+ ret = ipp_queue_buf_with_run(dev, c_node, m_node, qbuf);
+ if (ret) {
+ DRM_ERROR("failed to run command.\n");
+ goto err_clean_node;
+ }
+ }
+ break;
+ case IPP_BUF_DEQUEUE:
+ mutex_lock(&c_node->lock);
+
+ /* put event for destination buffer */
+ if (qbuf->ops_id == EXYNOS_DRM_OPS_DST)
+ ipp_put_event(c_node, qbuf);
+
+ ipp_clean_queue_buf(drm_dev, c_node, qbuf);
+
+ mutex_unlock(&c_node->lock);
+ break;
+ default:
+ DRM_ERROR("invalid buffer control.\n");
+ return -EINVAL;
+ }
+
+ return 0;
+
+err_clean_node:
+ DRM_ERROR("clean memory nodes.\n");
+
+ ipp_clean_queue_buf(drm_dev, c_node, qbuf);
+ return ret;
+}
+
+static bool exynos_drm_ipp_check_valid(struct device *dev,
+ enum drm_exynos_ipp_ctrl ctrl, enum drm_exynos_ipp_state state)
+{
+ if (ctrl != IPP_CTRL_PLAY) {
+ if (pm_runtime_suspended(dev)) {
+ DRM_ERROR("pm:runtime_suspended.\n");
+ goto err_status;
+ }
+ }
+
+ switch (ctrl) {
+ case IPP_CTRL_PLAY:
+ if (state != IPP_STATE_IDLE)
+ goto err_status;
+ break;
+ case IPP_CTRL_STOP:
+ if (state == IPP_STATE_STOP)
+ goto err_status;
+ break;
+ case IPP_CTRL_PAUSE:
+ if (state != IPP_STATE_START)
+ goto err_status;
+ break;
+ case IPP_CTRL_RESUME:
+ if (state != IPP_STATE_STOP)
+ goto err_status;
+ break;
+ default:
+ DRM_ERROR("invalid state.\n");
+ goto err_status;
+ }
+
+ return true;
+
+err_status:
+ DRM_ERROR("invalid status:ctrl[%d]state[%d]\n", ctrl, state);
+ return false;
+}
+
+int exynos_drm_ipp_cmd_ctrl(struct drm_device *drm_dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_exynos_file_private *file_priv = file->driver_priv;
+ struct exynos_drm_ippdrv *ippdrv = NULL;
+ struct device *dev = file_priv->ipp_dev;
+ struct ipp_context *ctx = get_ipp_context(dev);
+ struct drm_exynos_ipp_cmd_ctrl *cmd_ctrl = data;
+ struct drm_exynos_ipp_cmd_work *cmd_work;
+ struct drm_exynos_ipp_cmd_node *c_node;
+
+ if (!ctx) {
+ DRM_ERROR("invalid context.\n");
+ return -EINVAL;
+ }
+
+ if (!cmd_ctrl) {
+ DRM_ERROR("invalid control parameter.\n");
+ return -EINVAL;
+ }
+
+ DRM_DEBUG_KMS("ctrl[%d]prop_id[%d]\n",
+ cmd_ctrl->ctrl, cmd_ctrl->prop_id);
+
+ ippdrv = ipp_find_drv_by_handle(cmd_ctrl->prop_id);
+ if (IS_ERR(ippdrv)) {
+ DRM_ERROR("failed to get ipp driver.\n");
+ return PTR_ERR(ippdrv);
+ }
+
+ c_node = ipp_find_obj(&ctx->prop_idr, &ctx->prop_lock,
+ cmd_ctrl->prop_id);
+ if (!c_node || c_node->filp != file) {
+ DRM_ERROR("invalid command node list.\n");
+ return -ENODEV;
+ }
+
+ if (!exynos_drm_ipp_check_valid(ippdrv->dev, cmd_ctrl->ctrl,
+ c_node->state)) {
+ DRM_ERROR("invalid state.\n");
+ return -EINVAL;
+ }
+
+ switch (cmd_ctrl->ctrl) {
+ case IPP_CTRL_PLAY:
+ if (pm_runtime_suspended(ippdrv->dev))
+ pm_runtime_get_sync(ippdrv->dev);
+
+ c_node->state = IPP_STATE_START;
+
+ cmd_work = c_node->start_work;
+ cmd_work->ctrl = cmd_ctrl->ctrl;
+ ipp_handle_cmd_work(dev, ippdrv, cmd_work, c_node);
+ break;
+ case IPP_CTRL_STOP:
+ cmd_work = c_node->stop_work;
+ cmd_work->ctrl = cmd_ctrl->ctrl;
+ ipp_handle_cmd_work(dev, ippdrv, cmd_work, c_node);
+
+ if (!wait_for_completion_timeout(&c_node->stop_complete,
+ msecs_to_jiffies(300))) {
+ DRM_ERROR("timeout stop:prop_id[%d]\n",
+ c_node->property.prop_id);
+ }
+
+ c_node->state = IPP_STATE_STOP;
+ ippdrv->dedicated = false;
+ mutex_lock(&ippdrv->cmd_lock);
+ ipp_clean_cmd_node(ctx, c_node);
+
+ if (list_empty(&ippdrv->cmd_list))
+ pm_runtime_put_sync(ippdrv->dev);
+ mutex_unlock(&ippdrv->cmd_lock);
+ break;
+ case IPP_CTRL_PAUSE:
+ cmd_work = c_node->stop_work;
+ cmd_work->ctrl = cmd_ctrl->ctrl;
+ ipp_handle_cmd_work(dev, ippdrv, cmd_work, c_node);
+
+ if (!wait_for_completion_timeout(&c_node->stop_complete,
+ msecs_to_jiffies(200))) {
+ DRM_ERROR("timeout stop:prop_id[%d]\n",
+ c_node->property.prop_id);
+ }
+
+ c_node->state = IPP_STATE_STOP;
+ break;
+ case IPP_CTRL_RESUME:
+ c_node->state = IPP_STATE_START;
+ cmd_work = c_node->start_work;
+ cmd_work->ctrl = cmd_ctrl->ctrl;
+ ipp_handle_cmd_work(dev, ippdrv, cmd_work, c_node);
+ break;
+ default:
+ DRM_ERROR("could not support this state currently.\n");
+ return -EINVAL;
+ }
+
+ DRM_DEBUG_KMS("done ctrl[%d]prop_id[%d]\n",
+ cmd_ctrl->ctrl, cmd_ctrl->prop_id);
+
+ return 0;
+}
+
+int exynos_drm_ippnb_register(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_register(
+ &exynos_drm_ippnb_list, nb);
+}
+
+int exynos_drm_ippnb_unregister(struct notifier_block *nb)
+{
+ return blocking_notifier_chain_unregister(
+ &exynos_drm_ippnb_list, nb);
+}
+
+int exynos_drm_ippnb_send_event(unsigned long val, void *v)
+{
+ return blocking_notifier_call_chain(
+ &exynos_drm_ippnb_list, val, v);
+}
+
+static int ipp_set_property(struct exynos_drm_ippdrv *ippdrv,
+ struct drm_exynos_ipp_property *property)
+{
+ struct exynos_drm_ipp_ops *ops = NULL;
+ bool swap = false;
+ int ret, i;
+
+ if (!property) {
+ DRM_ERROR("invalid property parameter.\n");
+ return -EINVAL;
+ }
+
+ DRM_DEBUG_KMS("prop_id[%d]\n", property->prop_id);
+
+ /* reset h/w block */
+ if (ippdrv->reset &&
+ ippdrv->reset(ippdrv->dev)) {
+ return -EINVAL;
+ }
+
+ /* set source,destination operations */
+ for_each_ipp_ops(i) {
+ struct drm_exynos_ipp_config *config =
+ &property->config[i];
+
+ ops = ippdrv->ops[i];
+ if (!ops || !config) {
+ DRM_ERROR("not support ops and config.\n");
+ return -EINVAL;
+ }
+
+ /* set format */
+ if (ops->set_fmt) {
+ ret = ops->set_fmt(ippdrv->dev, config->fmt);
+ if (ret)
+ return ret;
+ }
+
+ /* set transform for rotation, flip */
+ if (ops->set_transf) {
+ ret = ops->set_transf(ippdrv->dev, config->degree,
+ config->flip, &swap);
+ if (ret)
+ return ret;
+ }
+
+ /* set size */
+ if (ops->set_size) {
+ ret = ops->set_size(ippdrv->dev, swap, &config->pos,
+ &config->sz);
+ if (ret)
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int ipp_start_property(struct exynos_drm_ippdrv *ippdrv,
+ struct drm_exynos_ipp_cmd_node *c_node)
+{
+ struct drm_exynos_ipp_mem_node *m_node;
+ struct drm_exynos_ipp_property *property = &c_node->property;
+ struct list_head *head;
+ int ret, i;
+
+ DRM_DEBUG_KMS("prop_id[%d]\n", property->prop_id);
+
+ /* store command info in ippdrv */
+ ippdrv->c_node = c_node;
+
+ mutex_lock(&c_node->mem_lock);
+ if (!ipp_check_mem_list(c_node)) {
+ DRM_DEBUG_KMS("empty memory.\n");
+ ret = -ENOMEM;
+ goto err_unlock;
+ }
+
+ /* set current property in ippdrv */
+ ret = ipp_set_property(ippdrv, property);
+ if (ret) {
+ DRM_ERROR("failed to set property.\n");
+ ippdrv->c_node = NULL;
+ goto err_unlock;
+ }
+
+ /* check command */
+ switch (property->cmd) {
+ case IPP_CMD_M2M:
+ for_each_ipp_ops(i) {
+ /* source/destination memory list */
+ head = &c_node->mem_list[i];
+
+ m_node = list_first_entry(head,
+ struct drm_exynos_ipp_mem_node, list);
+
+ DRM_DEBUG_KMS("m_node[0x%x]\n", (int)m_node);
+
+ ret = ipp_set_mem_node(ippdrv, c_node, m_node);
+ if (ret) {
+ DRM_ERROR("failed to set m node.\n");
+ goto err_unlock;
+ }
+ }
+ break;
+ case IPP_CMD_WB:
+ /* destination memory list */
+ head = &c_node->mem_list[EXYNOS_DRM_OPS_DST];
+
+ list_for_each_entry(m_node, head, list) {
+ ret = ipp_set_mem_node(ippdrv, c_node, m_node);
+ if (ret) {
+ DRM_ERROR("failed to set m node.\n");
+ goto err_unlock;
+ }
+ }
+ break;
+ case IPP_CMD_OUTPUT:
+ /* source memory list */
+ head = &c_node->mem_list[EXYNOS_DRM_OPS_SRC];
+
+ list_for_each_entry(m_node, head, list) {
+ ret = ipp_set_mem_node(ippdrv, c_node, m_node);
+ if (ret) {
+ DRM_ERROR("failed to set m node.\n");
+ goto err_unlock;
+ }
+ }
+ break;
+ default:
+ DRM_ERROR("invalid operations.\n");
+ ret = -EINVAL;
+ goto err_unlock;
+ }
+ mutex_unlock(&c_node->mem_lock);
+
+ DRM_DEBUG_KMS("cmd[%d]\n", property->cmd);
+
+ /* start operations */
+ if (ippdrv->start) {
+ ret = ippdrv->start(ippdrv->dev, property->cmd);
+ if (ret) {
+ DRM_ERROR("failed to start ops.\n");
+ ippdrv->c_node = NULL;
+ return ret;
+ }
+ }
+
+ return 0;
+
+err_unlock:
+ mutex_unlock(&c_node->mem_lock);
+ ippdrv->c_node = NULL;
+ return ret;
+}
+
+static int ipp_stop_property(struct drm_device *drm_dev,
+ struct exynos_drm_ippdrv *ippdrv,
+ struct drm_exynos_ipp_cmd_node *c_node)
+{
+ struct drm_exynos_ipp_property *property = &c_node->property;
+ int i;
+
+ DRM_DEBUG_KMS("prop_id[%d]\n", property->prop_id);
+
+ /* stop operations */
+ if (ippdrv->stop)
+ ippdrv->stop(ippdrv->dev, property->cmd);
+
+ /* check command */
+ switch (property->cmd) {
+ case IPP_CMD_M2M:
+ for_each_ipp_ops(i)
+ ipp_clean_mem_nodes(drm_dev, c_node, i);
+ break;
+ case IPP_CMD_WB:
+ ipp_clean_mem_nodes(drm_dev, c_node, EXYNOS_DRM_OPS_DST);
+ break;
+ case IPP_CMD_OUTPUT:
+ ipp_clean_mem_nodes(drm_dev, c_node, EXYNOS_DRM_OPS_SRC);
+ break;
+ default:
+ DRM_ERROR("invalid operations.\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+void ipp_sched_cmd(struct work_struct *work)
+{
+ struct drm_exynos_ipp_cmd_work *cmd_work =
+ container_of(work, struct drm_exynos_ipp_cmd_work, work);
+ struct exynos_drm_ippdrv *ippdrv;
+ struct drm_exynos_ipp_cmd_node *c_node;
+ struct drm_exynos_ipp_property *property;
+ int ret;
+
+ ippdrv = cmd_work->ippdrv;
+ if (!ippdrv) {
+ DRM_ERROR("invalid ippdrv list.\n");
+ return;
+ }
+
+ c_node = cmd_work->c_node;
+ if (!c_node) {
+ DRM_ERROR("invalid command node list.\n");
+ return;
+ }
+
+ mutex_lock(&c_node->lock);
+
+ property = &c_node->property;
+
+ switch (cmd_work->ctrl) {
+ case IPP_CTRL_PLAY:
+ case IPP_CTRL_RESUME:
+ ret = ipp_start_property(ippdrv, c_node);
+ if (ret) {
+ DRM_ERROR("failed to start property:prop_id[%d]\n",
+ c_node->property.prop_id);
+ goto err_unlock;
+ }
+
+ /*
+ * M2M case supports wait_completion of transfer.
+ * because M2M case supports single unit operation
+ * with multiple queue.
+ * M2M need to wait completion of data transfer.
+ */
+ if (ipp_is_m2m_cmd(property->cmd)) {
+ if (!wait_for_completion_timeout
+ (&c_node->start_complete, msecs_to_jiffies(200))) {
+ DRM_ERROR("timeout event:prop_id[%d]\n",
+ c_node->property.prop_id);
+ goto err_unlock;
+ }
+ }
+ break;
+ case IPP_CTRL_STOP:
+ case IPP_CTRL_PAUSE:
+ ret = ipp_stop_property(ippdrv->drm_dev, ippdrv,
+ c_node);
+ if (ret) {
+ DRM_ERROR("failed to stop property.\n");
+ goto err_unlock;
+ }
+
+ complete(&c_node->stop_complete);
+ break;
+ default:
+ DRM_ERROR("unknown control type\n");
+ break;
+ }
+
+ DRM_DEBUG_KMS("ctrl[%d] done.\n", cmd_work->ctrl);
+
+err_unlock:
+ mutex_unlock(&c_node->lock);
+}
+
+static int ipp_send_event(struct exynos_drm_ippdrv *ippdrv,
+ struct drm_exynos_ipp_cmd_node *c_node, int *buf_id)
+{
+ struct drm_device *drm_dev = ippdrv->drm_dev;
+ struct drm_exynos_ipp_property *property = &c_node->property;
+ struct drm_exynos_ipp_mem_node *m_node;
+ struct drm_exynos_ipp_queue_buf qbuf;
+ struct drm_exynos_ipp_send_event *e;
+ struct list_head *head;
+ struct timeval now;
+ unsigned long flags;
+ u32 tbuf_id[EXYNOS_DRM_OPS_MAX] = {0, };
+ int ret, i;
+
+ for_each_ipp_ops(i)
+ DRM_DEBUG_KMS("%s buf_id[%d]\n", i ? "dst" : "src", buf_id[i]);
+
+ if (!drm_dev) {
+ DRM_ERROR("failed to get drm_dev.\n");
+ return -EINVAL;
+ }
+
+ if (!property) {
+ DRM_ERROR("failed to get property.\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&c_node->event_lock);
+ if (list_empty(&c_node->event_list)) {
+ DRM_DEBUG_KMS("event list is empty.\n");
+ ret = 0;
+ goto err_event_unlock;
+ }
+
+ mutex_lock(&c_node->mem_lock);
+ if (!ipp_check_mem_list(c_node)) {
+ DRM_DEBUG_KMS("empty memory.\n");
+ ret = 0;
+ goto err_mem_unlock;
+ }
+
+ /* check command */
+ switch (property->cmd) {
+ case IPP_CMD_M2M:
+ for_each_ipp_ops(i) {
+ /* source/destination memory list */
+ head = &c_node->mem_list[i];
+
+ m_node = list_first_entry(head,
+ struct drm_exynos_ipp_mem_node, list);
+
+ tbuf_id[i] = m_node->buf_id;
+ DRM_DEBUG_KMS("%s buf_id[%d]\n",
+ i ? "dst" : "src", tbuf_id[i]);
+
+ ret = ipp_put_mem_node(drm_dev, c_node, m_node);
+ if (ret)
+ DRM_ERROR("failed to put m_node.\n");
+ }
+ break;
+ case IPP_CMD_WB:
+ /* clear buf for finding */
+ memset(&qbuf, 0x0, sizeof(qbuf));
+ qbuf.ops_id = EXYNOS_DRM_OPS_DST;
+ qbuf.buf_id = buf_id[EXYNOS_DRM_OPS_DST];
+
+ /* get memory node entry */
+ m_node = ipp_find_mem_node(c_node, &qbuf);
+ if (!m_node) {
+ DRM_ERROR("empty memory node.\n");
+ ret = -ENOMEM;
+ goto err_mem_unlock;
+ }
+
+ tbuf_id[EXYNOS_DRM_OPS_DST] = m_node->buf_id;
+
+ ret = ipp_put_mem_node(drm_dev, c_node, m_node);
+ if (ret)
+ DRM_ERROR("failed to put m_node.\n");
+ break;
+ case IPP_CMD_OUTPUT:
+ /* source memory list */
+ head = &c_node->mem_list[EXYNOS_DRM_OPS_SRC];
+
+ m_node = list_first_entry(head,
+ struct drm_exynos_ipp_mem_node, list);
+
+ tbuf_id[EXYNOS_DRM_OPS_SRC] = m_node->buf_id;
+
+ ret = ipp_put_mem_node(drm_dev, c_node, m_node);
+ if (ret)
+ DRM_ERROR("failed to put m_node.\n");
+ break;
+ default:
+ DRM_ERROR("invalid operations.\n");
+ ret = -EINVAL;
+ goto err_mem_unlock;
+ }
+ mutex_unlock(&c_node->mem_lock);
+
+ if (tbuf_id[EXYNOS_DRM_OPS_DST] != buf_id[EXYNOS_DRM_OPS_DST])
+ DRM_ERROR("failed to match buf_id[%d %d]prop_id[%d]\n",
+ tbuf_id[1], buf_id[1], property->prop_id);
+
+ /*
+ * command node have event list of destination buffer
+ * If destination buffer enqueue to mem list,
+ * then we make event and link to event list tail.
+ * so, we get first event for first enqueued buffer.
+ */
+ e = list_first_entry(&c_node->event_list,
+ struct drm_exynos_ipp_send_event, base.link);
+
+ do_gettimeofday(&now);
+ DRM_DEBUG_KMS("tv_sec[%ld]tv_usec[%ld]\n", now.tv_sec, now.tv_usec);
+ e->event.tv_sec = now.tv_sec;
+ e->event.tv_usec = now.tv_usec;
+ e->event.prop_id = property->prop_id;
+
+ /* set buffer id about source destination */
+ for_each_ipp_ops(i)
+ e->event.buf_id[i] = tbuf_id[i];
+
+ spin_lock_irqsave(&drm_dev->event_lock, flags);
+ list_move_tail(&e->base.link, &e->base.file_priv->event_list);
+ wake_up_interruptible(&e->base.file_priv->event_wait);
+ spin_unlock_irqrestore(&drm_dev->event_lock, flags);
+ mutex_unlock(&c_node->event_lock);
+
+ DRM_DEBUG_KMS("done cmd[%d]prop_id[%d]buf_id[%d]\n",
+ property->cmd, property->prop_id, tbuf_id[EXYNOS_DRM_OPS_DST]);
+
+ return 0;
+
+err_mem_unlock:
+ mutex_unlock(&c_node->mem_lock);
+err_event_unlock:
+ mutex_unlock(&c_node->event_lock);
+ return ret;
+}
+
+void ipp_sched_event(struct work_struct *work)
+{
+ struct drm_exynos_ipp_event_work *event_work =
+ container_of(work, struct drm_exynos_ipp_event_work, work);
+ struct exynos_drm_ippdrv *ippdrv;
+ struct drm_exynos_ipp_cmd_node *c_node;
+ int ret;
+
+ if (!event_work) {
+ DRM_ERROR("failed to get event_work.\n");
+ return;
+ }
+
+ DRM_DEBUG_KMS("buf_id[%d]\n", event_work->buf_id[EXYNOS_DRM_OPS_DST]);
+
+ ippdrv = event_work->ippdrv;
+ if (!ippdrv) {
+ DRM_ERROR("failed to get ipp driver.\n");
+ return;
+ }
+
+ c_node = ippdrv->c_node;
+ if (!c_node) {
+ DRM_ERROR("failed to get command node.\n");
+ return;
+ }
+
+ /*
+ * IPP supports command thread, event thread synchronization.
+ * If IPP close immediately from user land, then IPP make
+ * synchronization with command thread, so make complete event.
+ * or going out operations.
+ */
+ if (c_node->state != IPP_STATE_START) {
+ DRM_DEBUG_KMS("bypass state[%d]prop_id[%d]\n",
+ c_node->state, c_node->property.prop_id);
+ goto err_completion;
+ }
+
+ ret = ipp_send_event(ippdrv, c_node, event_work->buf_id);
+ if (ret) {
+ DRM_ERROR("failed to send event.\n");
+ goto err_completion;
+ }
+
+err_completion:
+ if (ipp_is_m2m_cmd(c_node->property.cmd))
+ complete(&c_node->start_complete);
+}
+
+static int ipp_subdrv_probe(struct drm_device *drm_dev, struct device *dev)
+{
+ struct ipp_context *ctx = get_ipp_context(dev);
+ struct exynos_drm_ippdrv *ippdrv;
+ int ret, count = 0;
+
+ /* get ipp driver entry */
+ list_for_each_entry(ippdrv, &exynos_drm_ippdrv_list, drv_list) {
+ ippdrv->drm_dev = drm_dev;
+
+ ret = ipp_create_id(&ctx->ipp_idr, &ctx->ipp_lock, ippdrv);
+ if (ret < 0) {
+ DRM_ERROR("failed to create id.\n");
+ goto err;
+ }
+ ippdrv->prop_list.ipp_id = ret;
+
+ DRM_DEBUG_KMS("count[%d]ippdrv[0x%x]ipp_id[%d]\n",
+ count++, (int)ippdrv, ret);
+
+ /* store parent device for node */
+ ippdrv->parent_dev = dev;
+
+ /* store event work queue and handler */
+ ippdrv->event_workq = ctx->event_workq;
+ ippdrv->sched_event = ipp_sched_event;
+ INIT_LIST_HEAD(&ippdrv->cmd_list);
+ mutex_init(&ippdrv->cmd_lock);
+
+ if (is_drm_iommu_supported(drm_dev)) {
+ ret = drm_iommu_attach_device(drm_dev, ippdrv->dev);
+ if (ret) {
+ DRM_ERROR("failed to activate iommu\n");
+ goto err;
+ }
+ }
+ }
+
+ return 0;
+
+err:
+ /* get ipp driver entry */
+ list_for_each_entry_continue_reverse(ippdrv, &exynos_drm_ippdrv_list,
+ drv_list) {
+ if (is_drm_iommu_supported(drm_dev))
+ drm_iommu_detach_device(drm_dev, ippdrv->dev);
+
+ ipp_remove_id(&ctx->ipp_idr, &ctx->ipp_lock,
+ ippdrv->prop_list.ipp_id);
+ }
+
+ return ret;
+}
+
+static void ipp_subdrv_remove(struct drm_device *drm_dev, struct device *dev)
+{
+ struct exynos_drm_ippdrv *ippdrv, *t;
+ struct ipp_context *ctx = get_ipp_context(dev);
+
+ /* get ipp driver entry */
+ list_for_each_entry_safe(ippdrv, t, &exynos_drm_ippdrv_list, drv_list) {
+ if (is_drm_iommu_supported(drm_dev))
+ drm_iommu_detach_device(drm_dev, ippdrv->dev);
+
+ ipp_remove_id(&ctx->ipp_idr, &ctx->ipp_lock,
+ ippdrv->prop_list.ipp_id);
+
+ ippdrv->drm_dev = NULL;
+ exynos_drm_ippdrv_unregister(ippdrv);
+ }
+}
+
+static int ipp_subdrv_open(struct drm_device *drm_dev, struct device *dev,
+ struct drm_file *file)
+{
+ struct drm_exynos_file_private *file_priv = file->driver_priv;
+
+ file_priv->ipp_dev = dev;
+
+ DRM_DEBUG_KMS("done priv[0x%x]\n", (int)dev);
+
+ return 0;
+}
+
+static void ipp_subdrv_close(struct drm_device *drm_dev, struct device *dev,
+ struct drm_file *file)
+{
+ struct exynos_drm_ippdrv *ippdrv = NULL;
+ struct ipp_context *ctx = get_ipp_context(dev);
+ struct drm_exynos_ipp_cmd_node *c_node, *tc_node;
+ int count = 0;
+
+ list_for_each_entry(ippdrv, &exynos_drm_ippdrv_list, drv_list) {
+ mutex_lock(&ippdrv->cmd_lock);
+ list_for_each_entry_safe(c_node, tc_node,
+ &ippdrv->cmd_list, list) {
+ DRM_DEBUG_KMS("count[%d]ippdrv[0x%x]\n",
+ count++, (int)ippdrv);
+
+ if (c_node->filp == file) {
+ /*
+ * userland goto unnormal state. process killed.
+ * and close the file.
+ * so, IPP didn't called stop cmd ctrl.
+ * so, we are make stop operation in this state.
+ */
+ if (c_node->state == IPP_STATE_START) {
+ ipp_stop_property(drm_dev, ippdrv,
+ c_node);
+ c_node->state = IPP_STATE_STOP;
+ }
+
+ ippdrv->dedicated = false;
+ ipp_clean_cmd_node(ctx, c_node);
+ if (list_empty(&ippdrv->cmd_list))
+ pm_runtime_put_sync(ippdrv->dev);
+ }
+ }
+ mutex_unlock(&ippdrv->cmd_lock);
+ }
+
+ return;
+}
+
+static int ipp_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct ipp_context *ctx;
+ struct exynos_drm_subdrv *subdrv;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ mutex_init(&ctx->ipp_lock);
+ mutex_init(&ctx->prop_lock);
+
+ idr_init(&ctx->ipp_idr);
+ idr_init(&ctx->prop_idr);
+
+ /*
+ * create single thread for ipp event
+ * IPP supports event thread for IPP drivers.
+ * IPP driver send event_work to this thread.
+ * and IPP event thread send event to user process.
+ */
+ ctx->event_workq = create_singlethread_workqueue("ipp_event");
+ if (!ctx->event_workq) {
+ dev_err(dev, "failed to create event workqueue\n");
+ return -EINVAL;
+ }
+
+ /*
+ * create single thread for ipp command
+ * IPP supports command thread for user process.
+ * user process make command node using set property ioctl.
+ * and make start_work and send this work to command thread.
+ * and then this command thread start property.
+ */
+ ctx->cmd_workq = create_singlethread_workqueue("ipp_cmd");
+ if (!ctx->cmd_workq) {
+ dev_err(dev, "failed to create cmd workqueue\n");
+ ret = -EINVAL;
+ goto err_event_workq;
+ }
+
+ /* set sub driver informations */
+ subdrv = &ctx->subdrv;
+ subdrv->dev = dev;
+ subdrv->probe = ipp_subdrv_probe;
+ subdrv->remove = ipp_subdrv_remove;
+ subdrv->open = ipp_subdrv_open;
+ subdrv->close = ipp_subdrv_close;
+
+ platform_set_drvdata(pdev, ctx);
+
+ ret = exynos_drm_subdrv_register(subdrv);
+ if (ret < 0) {
+ DRM_ERROR("failed to register drm ipp device.\n");
+ goto err_cmd_workq;
+ }
+
+ dev_info(dev, "drm ipp registered successfully.\n");
+
+ return 0;
+
+err_cmd_workq:
+ destroy_workqueue(ctx->cmd_workq);
+err_event_workq:
+ destroy_workqueue(ctx->event_workq);
+ return ret;
+}
+
+static int ipp_remove(struct platform_device *pdev)
+{
+ struct ipp_context *ctx = platform_get_drvdata(pdev);
+
+ /* unregister sub driver */
+ exynos_drm_subdrv_unregister(&ctx->subdrv);
+
+ /* remove,destroy ipp idr */
+ idr_destroy(&ctx->ipp_idr);
+ idr_destroy(&ctx->prop_idr);
+
+ mutex_destroy(&ctx->ipp_lock);
+ mutex_destroy(&ctx->prop_lock);
+
+ /* destroy command, event work queue */
+ destroy_workqueue(ctx->cmd_workq);
+ destroy_workqueue(ctx->event_workq);
+
+ return 0;
+}
+
+struct platform_driver ipp_driver = {
+ .probe = ipp_probe,
+ .remove = ipp_remove,
+ .driver = {
+ .name = "exynos-drm-ipp",
+ .owner = THIS_MODULE,
+ },
+};
+
Code Review / kvmfornfv.git / blobdiff