diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_ipp.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_ipp.c | 1822 |
1 files changed, 1822 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_ipp.c b/drivers/gpu/drm/exynos/exynos_drm_ipp.c new file mode 100644 index 000000000..b7f1cbc46 --- /dev/null +++ b/drivers/gpu/drm/exynos/exynos_drm_ipp.c @@ -0,0 +1,1822 @@ +/* + * 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, + }, +}; + |