diff options
Diffstat (limited to 'drivers/gpu/drm/exynos_tmp/exynos_drm_g2d.c')
| -rw-r--r-- | drivers/gpu/drm/exynos_tmp/exynos_drm_g2d.c | 1007 |
1 files changed, 0 insertions, 1007 deletions
diff --git a/drivers/gpu/drm/exynos_tmp/exynos_drm_g2d.c b/drivers/gpu/drm/exynos_tmp/exynos_drm_g2d.c deleted file mode 100644 index a8f201e..0000000 --- a/drivers/gpu/drm/exynos_tmp/exynos_drm_g2d.c +++ /dev/null @@ -1,1007 +0,0 @@ -/* - * Copyright (C) 2012 Samsung Electronics Co.Ltd - * Authors: Joonyoung Shim <jy0922.shim@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundationr - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/platform_device.h> -#include <linux/pm_qos_params.h> -#include <linux/pm_runtime.h> -#include <linux/slab.h> -#include <linux/workqueue.h> - -#include "drmP.h" -#include "exynos_drm.h" -#include "exynos_drm_drv.h" -#include "exynos_drm_iommu.h" - -#define G2D_HW_MAJOR_VER 4 -#define G2D_HW_MINOR_VER 1 - -/* vaild register range set from user: 0x0104 ~ 0x0880 */ -#define G2D_VALID_START 0x0104 -#define G2D_VALID_END 0x0880 - -/* general registers */ -#define G2D_SOFT_RESET 0x0000 -#define G2D_INTEN 0x0004 -#define G2D_INTC_PEND 0x000C -#define G2D_DMA_SFR_BASE_ADDR 0x0080 -#define G2D_DMA_COMMAND 0x0084 -#define G2D_DMA_STATUS 0x008C -#define G2D_DMA_HOLD_CMD 0x0090 - -/* command registers */ -#define G2D_BITBLT_START 0x0100 - -/* registers for base address */ -#define G2D_SRC_BASE_ADDR 0x0304 -#define G2D_SRC_PLANE2_BASE_ADDR 0x0318 -#define G2D_DST_BASE_ADDR 0x0404 -#define G2D_DST_PLANE2_BASE_ADDR 0x0418 -#define G2D_PAT_BASE_ADDR 0x0500 -#define G2D_MSK_BASE_ADDR 0x0520 - -/* G2D_SOFT_RESET */ -#define G2D_SFRCLEAR (1 << 1) -#define G2D_R (1 << 0) - -/* G2D_INTEN */ -#define G2D_INTEN_ACF (1 << 3) -#define G2D_INTEN_UCF (1 << 2) -#define G2D_INTEN_GCF (1 << 1) -#define G2D_INTEN_SCF (1 << 0) - -/* G2D_INTC_PEND */ -#define G2D_INTP_ACMD_FIN (1 << 3) -#define G2D_INTP_UCMD_FIN (1 << 2) -#define G2D_INTP_GCMD_FIN (1 << 1) -#define G2D_INTP_SCMD_FIN (1 << 0) - -/* G2D_DMA_COMMAND */ -#define G2D_DMA_HALT (1 << 2) -#define G2D_DMA_CONTINUE (1 << 1) -#define G2D_DMA_START (1 << 0) - -/* G2D_DMA_STATUS */ -#define G2D_DMA_LIST_DONE_COUNT (0xFF << 17) -#define G2D_DMA_BITBLT_DONE_COUNT (0xFFFF << 1) -#define G2D_DMA_DONE (1 << 0) -#define G2D_DMA_LIST_DONE_COUNT_OFFSET 17 - -/* G2D_DMA_HOLD_CMD */ -#define G2D_USET_HOLD (1 << 2) -#define G2D_LIST_HOLD (1 << 1) -#define G2D_BITBLT_HOLD (1 << 0) - -/* G2D_BITBLT_START */ -#define G2D_START_CASESEL (1 << 2) -#define G2D_START_NHOLT (1 << 1) -#define G2D_START_BITBLT (1 << 0) - -#define G2D_CMDLIST_SIZE (PAGE_SIZE / 4) -#define G2D_CMDLIST_NUM 64 -#define G2D_CMDLIST_POOL_SIZE (G2D_CMDLIST_SIZE * G2D_CMDLIST_NUM) -#define G2D_CMDLIST_DATA_NUM (G2D_CMDLIST_SIZE / sizeof(u32) - 2) - -#define MAX_BUF_ADDR_NR 6 - -/* cmdlist data structure */ -struct g2d_cmdlist { - u32 head; - u32 data[G2D_CMDLIST_DATA_NUM]; - u32 last; /* last data offset */ -}; - -struct drm_exynos_pending_g2d_event { - struct drm_pending_event base; - struct drm_exynos_g2d_event event; -}; - -struct g2d_cmdlist_node { - struct list_head list; - struct g2d_cmdlist *cmdlist; - unsigned int map_nr; - void *gem_obj[MAX_BUF_ADDR_NR]; - dma_addr_t dma_addr; - - struct drm_exynos_pending_g2d_event *event; -}; - -struct g2d_runqueue_node { - struct list_head list; - struct list_head run_cmdlist; - struct list_head event_list; - struct completion complete; - int async; -}; - -struct g2d_data { - struct device *dev; - struct clk *gate_clk; - struct resource *regs_res; - void __iomem *regs; - int irq; - struct workqueue_struct *g2d_workq; - struct work_struct runqueue_work; - struct exynos_drm_subdrv subdrv; - struct pm_qos_request_list pm_qos; - bool suspended; - - /* cmdlist */ - struct g2d_cmdlist_node *cmdlist_node; - struct list_head free_cmdlist; - struct mutex cmdlist_mutex; - dma_addr_t cmdlist_pool; - dma_addr_t cmdlist_pool_map; - void *cmdlist_pool_virt; - - /* runqueue*/ - struct g2d_runqueue_node *runqueue_node; - struct list_head runqueue; - struct mutex runqueue_mutex; - struct kmem_cache *runqueue_slab; -}; - -static int g2d_init_cmdlist(struct g2d_data *g2d) -{ - struct device *dev = g2d->dev; - struct g2d_cmdlist_node *node = g2d->cmdlist_node; - int nr; - int ret; - - g2d->cmdlist_pool_virt = dma_alloc_coherent(dev, G2D_CMDLIST_POOL_SIZE, - &g2d->cmdlist_pool, GFP_KERNEL); - if (!g2d->cmdlist_pool_virt) { - dev_err(dev, "failed to allocate dma memory\n"); - return -ENOMEM; - } - - /* - * Allocate device address space for command list pool and then map all - * pages contained in sg list to iommu table. Command list pool also is - * accessed by dma through device address with using iommu. - */ - g2d->cmdlist_pool_map = exynos_drm_iommu_map(dev, g2d->cmdlist_pool, - G2D_CMDLIST_POOL_SIZE); - if (!g2d->cmdlist_pool_map) { - dev_err(dev, "failed map to iommu\n"); - ret = -EFAULT; - goto err; - } - - node = kcalloc(G2D_CMDLIST_NUM, G2D_CMDLIST_NUM * sizeof(*node), - GFP_KERNEL); - if (!node) { - dev_err(dev, "failed to allocate memory\n"); - ret = -ENOMEM; - goto err_iommu_unmap; - } - - for (nr = 0; nr < G2D_CMDLIST_NUM; nr++) { - node[nr].cmdlist = - g2d->cmdlist_pool_virt + nr * G2D_CMDLIST_SIZE; - node[nr].dma_addr = - g2d->cmdlist_pool_map + nr * G2D_CMDLIST_SIZE; - - list_add_tail(&node[nr].list, &g2d->free_cmdlist); - } - - return 0; - -err_iommu_unmap: - exynos_drm_iommu_unmap(dev, g2d->cmdlist_pool_map); -err: - dma_free_coherent(dev, G2D_CMDLIST_POOL_SIZE, g2d->cmdlist_pool_virt, - g2d->cmdlist_pool); - return ret; -} - -static void g2d_fini_cmdlist(struct g2d_data *g2d) -{ - struct device *dev = g2d->dev; - - exynos_drm_iommu_unmap(dev, g2d->cmdlist_pool_map); - - kfree(g2d->cmdlist_node); - dma_free_coherent(dev, G2D_CMDLIST_POOL_SIZE, g2d->cmdlist_pool_virt, - g2d->cmdlist_pool); -} - -static struct g2d_cmdlist_node *g2d_get_cmdlist(struct g2d_data *g2d) -{ - struct device *dev = g2d->dev; - struct g2d_cmdlist_node *node; - - mutex_lock(&g2d->cmdlist_mutex); - if (list_empty(&g2d->free_cmdlist)) { - dev_err(dev, "there is no free cmdlist\n"); - mutex_unlock(&g2d->cmdlist_mutex); - return NULL; - } - - node = list_first_entry(&g2d->free_cmdlist, struct g2d_cmdlist_node, - list); - list_del_init(&node->list); - mutex_unlock(&g2d->cmdlist_mutex); - - return node; -} - -static void g2d_put_cmdlist(struct g2d_data *g2d, struct g2d_cmdlist_node *node) -{ - mutex_lock(&g2d->cmdlist_mutex); - list_move_tail(&node->list, &g2d->free_cmdlist); - mutex_unlock(&g2d->cmdlist_mutex); -} - -static void g2d_add_cmdlist_to_inuse(struct exynos_drm_g2d_private *g2d_priv, - struct g2d_cmdlist_node *node) -{ - struct g2d_cmdlist_node *lnode; - - if (list_empty(&g2d_priv->inuse_cmdlist)) - goto add_to_list; - - /* this links to base address of new cmdlist */ - lnode = list_entry(g2d_priv->inuse_cmdlist.prev, - struct g2d_cmdlist_node, list); - lnode->cmdlist->data[lnode->cmdlist->last] = node->dma_addr; - -add_to_list: - list_add_tail(&node->list, &g2d_priv->inuse_cmdlist); - - if (node->event) - list_add_tail(&node->event->base.link, &g2d_priv->event_list); -} - -static int g2d_map_cmdlist_gem(struct g2d_data *g2d, - struct g2d_cmdlist_node *node, - struct drm_device *drm_dev, - struct drm_file *file) -{ - struct drm_exynos_file_private *file_priv = file->driver_priv; - struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv; - struct g2d_cmdlist *cmdlist = node->cmdlist; - struct iommu_gem_map_params params; - unsigned int gem_handle; - dma_addr_t addr; - int offset; - int i; - - params.dev = g2d->dev; - params.drm_dev = drm_dev; - params.file = file; - - for (i = 0; i < node->map_nr; i++) { - offset = cmdlist->last - (i * 2 + 1); - gem_handle = cmdlist->data[offset]; - - addr = exynos_drm_iommu_map_gem(¶ms, - &g2d_priv->iommu_map_list, - gem_handle, - IOMMU_G2D); - if (!addr) { - node->map_nr = i; - return -EFAULT; - } - - cmdlist->data[offset] = addr; - node->gem_obj[i] = params.gem_obj; - } - - return 0; -} - -static void g2d_unmap_cmdlist_gem(struct drm_device *drm_dev, - struct g2d_cmdlist_node *node, - struct drm_file *file, int dec) -{ - struct drm_exynos_file_private *file_priv = file->driver_priv; - struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv; - struct device *dev = g2d_priv->dev; - struct g2d_cmdlist *cmdlist = node->cmdlist; - struct iommu_gem_map_params params; - struct g2d_data *g2d; - dma_addr_t addr; - int offset; - int i; - - g2d = dev_get_drvdata(dev); - if (!g2d) - return; - - params.dev = dev; - params.drm_dev = drm_dev; - params.file = file; - - for (i = 0; i < node->map_nr; i++) { - offset = cmdlist->last - (i * 2 + 1) - dec; - addr = cmdlist->data[offset]; - - params.gem_obj = node->gem_obj[i]; - - exynos_drm_iommu_unmap_gem(¶ms, addr, - IOMMU_G2D); - } -} - -static void g2d_dma_start(struct g2d_data *g2d, - struct g2d_runqueue_node *runqueue_node) -{ - struct g2d_cmdlist_node *node = - list_first_entry(&runqueue_node->run_cmdlist, - struct g2d_cmdlist_node, list); - - pm_runtime_get_sync(g2d->dev); - clk_enable(g2d->gate_clk); - pm_qos_update_request(&g2d->pm_qos, 400000); - - /* interrupt enable */ - writel_relaxed(G2D_INTEN_ACF | G2D_INTEN_UCF | G2D_INTEN_GCF, - g2d->regs + G2D_INTEN); - - writel_relaxed(node->dma_addr, g2d->regs + G2D_DMA_SFR_BASE_ADDR); - writel_relaxed(G2D_DMA_START, g2d->regs + G2D_DMA_COMMAND); -} - -static struct g2d_runqueue_node *g2d_get_runqueue_node(struct g2d_data *g2d) -{ - struct g2d_runqueue_node *runqueue_node; - - if (list_empty(&g2d->runqueue)) - return NULL; - - runqueue_node = list_first_entry(&g2d->runqueue, - struct g2d_runqueue_node, list); - list_del_init(&runqueue_node->list); - return runqueue_node; -} - -static void g2d_free_runqueue_node(struct g2d_data *g2d, - struct g2d_runqueue_node *runqueue_node) -{ - if (!runqueue_node) - return; - - mutex_lock(&g2d->cmdlist_mutex); - list_splice_tail_init(&runqueue_node->run_cmdlist, &g2d->free_cmdlist); - mutex_unlock(&g2d->cmdlist_mutex); - - kmem_cache_free(g2d->runqueue_slab, runqueue_node); -} - -static void g2d_exec_runqueue(struct g2d_data *g2d) -{ - g2d->runqueue_node = g2d_get_runqueue_node(g2d); - if (g2d->runqueue_node) - g2d_dma_start(g2d, g2d->runqueue_node); -} - -static void g2d_runqueue_worker(struct work_struct *work) -{ - struct g2d_data *g2d = container_of(work, struct g2d_data, - runqueue_work); - - pm_qos_update_request(&g2d->pm_qos, 0); - - mutex_lock(&g2d->runqueue_mutex); - clk_disable(g2d->gate_clk); - pm_runtime_put_sync(g2d->dev); - - complete(&g2d->runqueue_node->complete); - if (g2d->runqueue_node->async) - g2d_free_runqueue_node(g2d, g2d->runqueue_node); - - if (g2d->suspended) - g2d->runqueue_node = NULL; - else - g2d_exec_runqueue(g2d); - mutex_unlock(&g2d->runqueue_mutex); -} - -static void g2d_finish_event(struct g2d_data *g2d, u32 cmdlist_no) -{ - struct drm_device *drm_dev = g2d->subdrv.drm_dev; - struct g2d_runqueue_node *runqueue_node = g2d->runqueue_node; - struct drm_exynos_pending_g2d_event *e; - struct timeval now; - unsigned long flags; - - if (list_empty(&runqueue_node->event_list)) - return; - - e = list_first_entry(&runqueue_node->event_list, - struct drm_exynos_pending_g2d_event, base.link); - - do_gettimeofday(&now); - e->event.tv_sec = now.tv_sec; - e->event.tv_usec = now.tv_usec; - e->event.cmdlist_no = cmdlist_no; - - 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); -} - -static irqreturn_t g2d_irq_handler(int irq, void *dev_id) -{ - struct g2d_data *g2d = dev_id; - u32 pending; - - pending = readl_relaxed(g2d->regs + G2D_INTC_PEND); - if (pending) - writel_relaxed(pending, g2d->regs + G2D_INTC_PEND); - - if (pending & G2D_INTP_GCMD_FIN) { - u32 cmdlist_no = readl_relaxed(g2d->regs + G2D_DMA_STATUS); - - cmdlist_no = (cmdlist_no & G2D_DMA_LIST_DONE_COUNT) >> - G2D_DMA_LIST_DONE_COUNT_OFFSET; - - g2d_finish_event(g2d, cmdlist_no); - - writel_relaxed(0, g2d->regs + G2D_DMA_HOLD_CMD); - if (!(pending & G2D_INTP_ACMD_FIN)) { - writel_relaxed(G2D_DMA_CONTINUE, - g2d->regs + G2D_DMA_COMMAND); - } - } - - if (pending & G2D_INTP_ACMD_FIN) - queue_work(g2d->g2d_workq, &g2d->runqueue_work); - - return IRQ_HANDLED; -} - -static int g2d_check_reg_offset(struct device *dev, struct g2d_cmdlist *cmdlist, - int nr, bool for_addr) -{ - int reg_offset; - int index; - int i; - - for (i = 0; i < nr; i++) { - index = cmdlist->last - 2 * (i + 1); - reg_offset = cmdlist->data[index] & ~0xfffff000; - - if (reg_offset < G2D_VALID_START || reg_offset > G2D_VALID_END) - goto err; - if (reg_offset % 4) - goto err; - - switch (reg_offset) { - case G2D_SRC_BASE_ADDR: - case G2D_SRC_PLANE2_BASE_ADDR: - case G2D_DST_BASE_ADDR: - case G2D_DST_PLANE2_BASE_ADDR: - case G2D_PAT_BASE_ADDR: - case G2D_MSK_BASE_ADDR: - if (!for_addr) - goto err; - break; - default: - if (for_addr) - goto err; - break; - } - } - - return 0; - -err: - dev_err(dev, "Bad register offset: 0x%x\n", cmdlist->data[index]); - return -EINVAL; -} - -/* ioctl functions */ -int exynos_g2d_get_ver_ioctl(struct drm_device *drm_dev, void *data, - struct drm_file *file) -{ - struct drm_exynos_g2d_get_ver *ver = data; - - ver->major = G2D_HW_MAJOR_VER; - ver->minor = G2D_HW_MINOR_VER; - - return 0; -} -EXPORT_SYMBOL_GPL(exynos_g2d_get_ver_ioctl); - -int exynos_g2d_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data, - struct drm_file *file) -{ - struct drm_exynos_file_private *file_priv = file->driver_priv; - struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv; - struct device *dev = g2d_priv->dev; - struct g2d_data *g2d; - struct drm_exynos_g2d_set_cmdlist *req = data; - struct drm_exynos_pending_g2d_event *e; - struct g2d_cmdlist_node *node; - struct g2d_cmdlist *cmdlist; - unsigned long flags; - int size; - int ret; - - if (!dev) - return -ENODEV; - - g2d = dev_get_drvdata(dev); - if (!g2d) - return -EFAULT; - - node = g2d_get_cmdlist(g2d); - if (!node) - return -ENOMEM; - - node->event = NULL; - - if (req->event_type != G2D_EVENT_NOT) { - spin_lock_irqsave(&drm_dev->event_lock, flags); - if (file->event_space < sizeof(e->event)) { - spin_unlock_irqrestore(&drm_dev->event_lock, flags); - ret = -ENOMEM; - goto err; - } - file->event_space -= sizeof(e->event); - spin_unlock_irqrestore(&drm_dev->event_lock, flags); - - e = kzalloc(sizeof(*node->event), GFP_KERNEL); - if (!e) { - dev_err(dev, "failed to allocate event\n"); - - spin_lock_irqsave(&drm_dev->event_lock, flags); - file->event_space += sizeof(e->event); - spin_unlock_irqrestore(&drm_dev->event_lock, flags); - - ret = -ENOMEM; - goto err; - } - - e->event.base.type = DRM_EXYNOS_G2D_EVENT; - e->event.base.length = sizeof(e->event); - e->event.user_data = req->user_data; - e->base.event = &e->event.base; - e->base.file_priv = file; - e->base.destroy = (void (*) (struct drm_pending_event *)) kfree; - - node->event = e; - } - - cmdlist = node->cmdlist; - - cmdlist->last = 0; - - /* - * If don't clear SFR registers, the cmdlist is affected by register - * values of previous cmdlist. G2D hw executes SFR clear command and - * a next command at the same time then the next command is ignored and - * is executed rightly from next next command, so needs a dummy command - * to next command of SFR clear command. - */ - cmdlist->data[cmdlist->last++] = G2D_SOFT_RESET; - cmdlist->data[cmdlist->last++] = G2D_SFRCLEAR; - cmdlist->data[cmdlist->last++] = G2D_SRC_BASE_ADDR; - cmdlist->data[cmdlist->last++] = 0; - - if (node->event) { - cmdlist->data[cmdlist->last++] = G2D_DMA_HOLD_CMD; - cmdlist->data[cmdlist->last++] = G2D_LIST_HOLD; - } - - /* Check size of cmdlist: last 2 is about G2D_BITBLT_START */ - size = cmdlist->last + req->cmd_nr * 2 + req->cmd_gem_nr * 2 + 2; - if (size > G2D_CMDLIST_DATA_NUM) { - dev_err(dev, "cmdlist size is too big\n"); - ret = -EINVAL; - goto err_free_event; - } - - if (copy_from_user(cmdlist->data + cmdlist->last, - (void __user *)req->cmd, - sizeof(*req->cmd) * req->cmd_nr)) { - ret = -EFAULT; - goto err_free_event; - } - cmdlist->last += req->cmd_nr * 2; - - ret = g2d_check_reg_offset(dev, cmdlist, req->cmd_nr, false); - if (ret < 0) - goto err_free_event; - - node->map_nr = req->cmd_gem_nr; - if (req->cmd_gem_nr) { - struct drm_exynos_g2d_cmd *cmd_gem = req->cmd_gem; - - if (copy_from_user(cmdlist->data + cmdlist->last, - (void __user *)cmd_gem, - sizeof(*cmd_gem) * req->cmd_gem_nr)) { - ret = -EFAULT; - goto err_free_event; - } - cmdlist->last += req->cmd_gem_nr * 2; - - ret = g2d_check_reg_offset(dev, cmdlist, req->cmd_gem_nr, true); - if (ret < 0) - goto err_free_event; - - ret = g2d_map_cmdlist_gem(g2d, node, drm_dev, file); - if (ret < 0) - goto err_unmap; - } - - cmdlist->data[cmdlist->last++] = G2D_BITBLT_START; - cmdlist->data[cmdlist->last++] = G2D_START_BITBLT; - - /* head */ - cmdlist->head = cmdlist->last / 2; - - /* tail */ - cmdlist->data[cmdlist->last] = 0; - - g2d_add_cmdlist_to_inuse(g2d_priv, node); - - return 0; - -err_unmap: - g2d_unmap_cmdlist_gem(drm_dev, node, file, 0); -err_free_event: - if (node->event) { - spin_lock_irqsave(&drm_dev->event_lock, flags); - file->event_space += sizeof(e->event); - spin_unlock_irqrestore(&drm_dev->event_lock, flags); - kfree(node->event); - } -err: - g2d_put_cmdlist(g2d, node); - return ret; -} -EXPORT_SYMBOL_GPL(exynos_g2d_set_cmdlist_ioctl); - -int exynos_g2d_exec_ioctl(struct drm_device *drm_dev, void *data, - struct drm_file *file) -{ - struct drm_exynos_file_private *file_priv = file->driver_priv; - struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv; - struct device *dev = g2d_priv->dev; - struct g2d_data *g2d; - struct drm_exynos_g2d_exec *req = data; - struct g2d_runqueue_node *runqueue_node; - struct list_head *run_cmdlist; - struct list_head *event_list; - - if (!dev) - return -ENODEV; - - g2d = dev_get_drvdata(dev); - if (!g2d) - return -EFAULT; - - runqueue_node = kmem_cache_alloc(g2d->runqueue_slab, GFP_KERNEL); - if (!runqueue_node) { - dev_err(dev, "failed to allocate memory\n"); - return -ENOMEM; - } - run_cmdlist = &runqueue_node->run_cmdlist; - event_list = &runqueue_node->event_list; - INIT_LIST_HEAD(run_cmdlist); - INIT_LIST_HEAD(event_list); - init_completion(&runqueue_node->complete); - runqueue_node->async = req->async; - - list_splice_init(&g2d_priv->inuse_cmdlist, run_cmdlist); - list_splice_init(&g2d_priv->event_list, event_list); - - if (list_empty(run_cmdlist)) { - dev_err(dev, "there is no inuse cmdlist\n"); - kmem_cache_free(g2d->runqueue_slab, runqueue_node); - return -EPERM; - } - - mutex_lock(&g2d->runqueue_mutex); - list_add_tail(&runqueue_node->list, &g2d->runqueue); - if (!g2d->runqueue_node) - g2d_exec_runqueue(g2d); - mutex_unlock(&g2d->runqueue_mutex); - - if (runqueue_node->async) - goto out; - - wait_for_completion(&runqueue_node->complete); - g2d_free_runqueue_node(g2d, runqueue_node); - -out: - return 0; -} -EXPORT_SYMBOL_GPL(exynos_g2d_exec_ioctl); - -static int g2d_open(struct drm_device *drm_dev, struct device *dev, - struct drm_file *file) -{ - struct drm_exynos_file_private *file_priv = file->driver_priv; - struct exynos_drm_g2d_private *g2d_priv; - - g2d_priv = kzalloc(sizeof(*g2d_priv), GFP_KERNEL); - if (!g2d_priv) { - dev_err(dev, "failed to allocate g2d private data\n"); - return -ENOMEM; - } - - g2d_priv->dev = dev; - file_priv->g2d_priv = g2d_priv; - - INIT_LIST_HEAD(&g2d_priv->inuse_cmdlist); - INIT_LIST_HEAD(&g2d_priv->event_list); - INIT_LIST_HEAD(&g2d_priv->iommu_map_list); - - return 0; -} - -static void g2d_close(struct drm_device *drm_dev, struct device *dev, - struct drm_file *file) -{ - struct drm_exynos_file_private *file_priv = file->driver_priv; - struct exynos_drm_g2d_private *g2d_priv = file_priv->g2d_priv; - struct g2d_data *g2d; - struct g2d_cmdlist_node *node, *n; - struct iommu_info_node *im, *t_im; - struct iommu_gem_map_params params; - - if (!dev) - return; - - g2d = dev_get_drvdata(dev); - if (!g2d) - return; - - mutex_lock(&g2d->cmdlist_mutex); - list_for_each_entry_safe(node, n, &g2d_priv->inuse_cmdlist, list) - list_move_tail(&node->list, &g2d->free_cmdlist); - mutex_unlock(&g2d->cmdlist_mutex); - - params.dev = dev; - params.drm_dev = drm_dev; - params.file = file; - - /* - * unmap all device address spaces from iommu table and - * release all lists. - */ - list_for_each_entry_safe(im, t_im, &g2d_priv->iommu_map_list, list) { - params.gem_obj = im->gem_obj; - - exynos_drm_iommu_unmap_gem(¶ms, im->dma_addr, - IOMMU_G2D); - list_del(&im->list); - kfree(im); - im = NULL; - } - - kfree(file_priv->g2d_priv); -} - -static int __devinit g2d_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct resource *res; - struct g2d_data *g2d; - struct exynos_drm_subdrv *subdrv; - int ret; - - g2d = kzalloc(sizeof(*g2d), GFP_KERNEL); - if (!g2d) { - dev_err(dev, "failed to allocate driver data\n"); - return -ENOMEM; - } - - g2d->runqueue_slab = kmem_cache_create("g2d_runqueue_slab", - sizeof(struct g2d_runqueue_node), 0, 0, NULL); - if (!g2d->runqueue_slab) { - ret = -ENOMEM; - goto err_free_mem; - } - - g2d->dev = dev; - - g2d->g2d_workq = create_singlethread_workqueue("g2d"); - if (!g2d->g2d_workq) { - dev_err(dev, "failed to create workqueue\n"); - ret = -EINVAL; - goto err_destroy_slab; - } - - INIT_WORK(&g2d->runqueue_work, g2d_runqueue_worker); - INIT_LIST_HEAD(&g2d->free_cmdlist); - INIT_LIST_HEAD(&g2d->runqueue); - - mutex_init(&g2d->cmdlist_mutex); - mutex_init(&g2d->runqueue_mutex); - - /* setup device address space for g2d iommu */ - ret = exynos_drm_iommu_setup(dev); - if (ret < 0) { - dev_err(dev, "failed to setup iommu\n"); - goto err_destroy_workqueue; - } - - /* enable iommu to g2d hardware */ - ret = exynos_drm_iommu_activate(dev); - if (ret < 0) { - dev_err(dev, "failed to activate iommu\n"); - goto err_iommu_cleanup; - } - - ret = g2d_init_cmdlist(g2d); - if (ret < 0) - goto err_iommu_deactivate; - - g2d->gate_clk = clk_get(dev, "fimg2d"); - if (IS_ERR(g2d->gate_clk)) { - dev_err(dev, "failed to get gate clock\n"); - ret = PTR_ERR(g2d->gate_clk); - goto err_fini_cmdlist; - } - - pm_runtime_enable(dev); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(dev, "failed to get I/O memory\n"); - ret = -ENOENT; - goto err_put_clk; - } - - g2d->regs_res = request_mem_region(res->start, resource_size(res), - dev_name(dev)); - if (!g2d->regs_res) { - dev_err(dev, "failed to request I/O memory\n"); - ret = -ENOENT; - goto err_put_clk; - } - - g2d->regs = ioremap(res->start, resource_size(res)); - if (!g2d->regs) { - dev_err(dev, "failed to remap I/O memory\n"); - ret = -ENXIO; - goto err_release_res; - } - - g2d->irq = platform_get_irq(pdev, 0); - if (g2d->irq < 0) { - dev_err(dev, "failed to get irq\n"); - ret = g2d->irq; - goto err_unmap_base; - } - - ret = request_irq(g2d->irq, g2d_irq_handler, 0, "drm_g2d", g2d); - if (ret < 0) { - dev_err(dev, "irq request failed\n"); - goto err_unmap_base; - } - - platform_set_drvdata(pdev, g2d); - - subdrv = &g2d->subdrv; - subdrv->dev = dev; - subdrv->open = g2d_open; - subdrv->close = g2d_close; - - ret = exynos_drm_subdrv_register(subdrv); - if (ret < 0) { - dev_err(dev, "failed to register drm g2d device\n"); - goto err_free_irq; - } - - pm_qos_add_request(&g2d->pm_qos, PM_QOS_BUS_DMA_THROUGHPUT, 0); - - dev_info(dev, "The exynos g2d(ver %d.%d) successfully probed\n", - G2D_HW_MAJOR_VER, G2D_HW_MINOR_VER); - - return 0; - -err_free_irq: - free_irq(g2d->irq, g2d); -err_unmap_base: - iounmap(g2d->regs); -err_release_res: - release_resource(g2d->regs_res); - kfree(g2d->regs_res); -err_put_clk: - pm_runtime_disable(dev); - clk_put(g2d->gate_clk); -err_fini_cmdlist: - g2d_fini_cmdlist(g2d); -err_iommu_deactivate: - exynos_drm_iommu_deactivate(dev); -err_iommu_cleanup: - exynos_drm_iommu_cleanup(dev); -err_destroy_workqueue: - destroy_workqueue(g2d->g2d_workq); -err_destroy_slab: - kmem_cache_destroy(g2d->runqueue_slab); -err_free_mem: - kfree(g2d); - return ret; -} - -static int __devexit g2d_remove(struct platform_device *pdev) -{ - struct g2d_data *g2d = platform_get_drvdata(pdev); - - cancel_work_sync(&g2d->runqueue_work); - pm_qos_remove_request(&g2d->pm_qos); - exynos_drm_subdrv_unregister(&g2d->subdrv); - free_irq(g2d->irq, g2d); - - while (g2d->runqueue_node) { - g2d_free_runqueue_node(g2d, g2d->runqueue_node); - g2d->runqueue_node = g2d_get_runqueue_node(g2d); - } - - iounmap(g2d->regs); - release_resource(g2d->regs_res); - kfree(g2d->regs_res); - - pm_runtime_disable(&pdev->dev); - clk_put(g2d->gate_clk); - - g2d_fini_cmdlist(g2d); - exynos_drm_iommu_deactivate(&pdev->dev); - exynos_drm_iommu_cleanup(&pdev->dev); - destroy_workqueue(g2d->g2d_workq); - kmem_cache_destroy(g2d->runqueue_slab); - kfree(g2d); - - return 0; -} - -#ifdef CONFIG_PM_SLEEP -static int g2d_suspend(struct device *dev) -{ - struct g2d_data *g2d = dev_get_drvdata(dev); - - mutex_lock(&g2d->runqueue_mutex); - g2d->suspended = true; - mutex_unlock(&g2d->runqueue_mutex); - - while (g2d->runqueue_node) - /* FIXME: good range? */ - usleep_range(500, 1000); - - flush_work_sync(&g2d->runqueue_work); - - return 0; -} - -static int g2d_resume(struct device *dev) -{ - struct g2d_data *g2d = dev_get_drvdata(dev); - - g2d->suspended = false; - g2d_exec_runqueue(g2d); - - return 0; -} -#endif - -SIMPLE_DEV_PM_OPS(g2d_pm_ops, g2d_suspend, g2d_resume); - -struct platform_driver g2d_driver = { - .probe = g2d_probe, - .remove = __devexit_p(g2d_remove), - .driver = { - /* FIXME */ - .name = "s5p-fimg2d", - .owner = THIS_MODULE, - .pm = &g2d_pm_ops, - }, -}; |