// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2012 Samsung Electronics Co.Ltd * Authors: Joonyoung Shim <[email protected]> */ #include <linux/refcount.h> #include <linux/clk.h> #include <linux/component.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/err.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/kernel.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/slab.h> #include <linux/uaccess.h> #include <linux/workqueue.h> #include <drm/drm_file.h> #include <drm/exynos_drm.h> #include "exynos_drm_drv.h" #include "exynos_drm_g2d.h" #include "exynos_drm_gem.h" #define G2D_HW_MAJOR_VER … #define G2D_HW_MINOR_VER … /* vaild register range set from user: 0x0104 ~ 0x0880 */ #define G2D_VALID_START … #define G2D_VALID_END … /* general registers */ #define G2D_SOFT_RESET … #define G2D_INTEN … #define G2D_INTC_PEND … #define G2D_DMA_SFR_BASE_ADDR … #define G2D_DMA_COMMAND … #define G2D_DMA_STATUS … #define G2D_DMA_HOLD_CMD … /* command registers */ #define G2D_BITBLT_START … /* registers for base address */ #define G2D_SRC_BASE_ADDR … #define G2D_SRC_STRIDE … #define G2D_SRC_COLOR_MODE … #define G2D_SRC_LEFT_TOP … #define G2D_SRC_RIGHT_BOTTOM … #define G2D_SRC_PLANE2_BASE_ADDR … #define G2D_DST_BASE_ADDR … #define G2D_DST_STRIDE … #define G2D_DST_COLOR_MODE … #define G2D_DST_LEFT_TOP … #define G2D_DST_RIGHT_BOTTOM … #define G2D_DST_PLANE2_BASE_ADDR … #define G2D_PAT_BASE_ADDR … #define G2D_MSK_BASE_ADDR … /* G2D_SOFT_RESET */ #define G2D_SFRCLEAR … #define G2D_R … /* G2D_INTEN */ #define G2D_INTEN_ACF … #define G2D_INTEN_UCF … #define G2D_INTEN_GCF … #define G2D_INTEN_SCF … /* G2D_INTC_PEND */ #define G2D_INTP_ACMD_FIN … #define G2D_INTP_UCMD_FIN … #define G2D_INTP_GCMD_FIN … #define G2D_INTP_SCMD_FIN … /* G2D_DMA_COMMAND */ #define G2D_DMA_HALT … #define G2D_DMA_CONTINUE … #define G2D_DMA_START … /* G2D_DMA_STATUS */ #define G2D_DMA_LIST_DONE_COUNT … #define G2D_DMA_BITBLT_DONE_COUNT … #define G2D_DMA_DONE … #define G2D_DMA_LIST_DONE_COUNT_OFFSET … /* G2D_DMA_HOLD_CMD */ #define G2D_USER_HOLD … #define G2D_LIST_HOLD … #define G2D_BITBLT_HOLD … /* G2D_BITBLT_START */ #define G2D_START_CASESEL … #define G2D_START_NHOLT … #define G2D_START_BITBLT … /* buffer color format */ #define G2D_FMT_XRGB8888 … #define G2D_FMT_ARGB8888 … #define G2D_FMT_RGB565 … #define G2D_FMT_XRGB1555 … #define G2D_FMT_ARGB1555 … #define G2D_FMT_XRGB4444 … #define G2D_FMT_ARGB4444 … #define G2D_FMT_PACKED_RGB888 … #define G2D_FMT_A8 … #define G2D_FMT_L8 … /* buffer valid length */ #define G2D_LEN_MIN … #define G2D_LEN_MAX … #define G2D_CMDLIST_SIZE … #define G2D_CMDLIST_NUM … #define G2D_CMDLIST_POOL_SIZE … #define G2D_CMDLIST_DATA_NUM … /* maximum buffer pool size of userptr is 64MB as default */ #define MAX_POOL … enum { … }; enum g2d_reg_type { … }; enum g2d_flag_bits { … }; /* cmdlist data structure */ struct g2d_cmdlist { … }; /* * A structure of buffer description * * @format: color format * @stride: buffer stride/pitch in bytes * @left_x: the x coordinates of left top corner * @top_y: the y coordinates of left top corner * @right_x: the x coordinates of right bottom corner * @bottom_y: the y coordinates of right bottom corner * */ struct g2d_buf_desc { … }; /* * A structure of buffer information * * @map_nr: manages the number of mapped buffers * @reg_types: stores regitster type in the order of requested command * @handles: stores buffer handle in its reg_type position * @types: stores buffer type in its reg_type position * @descs: stores buffer description in its reg_type position * */ struct g2d_buf_info { … }; struct drm_exynos_pending_g2d_event { … }; struct g2d_cmdlist_userptr { … }; struct g2d_cmdlist_node { … }; struct g2d_runqueue_node { … }; struct g2d_data { … }; static inline void g2d_hw_reset(struct g2d_data *g2d) { … } static int g2d_init_cmdlist(struct g2d_data *g2d) { … } static void g2d_fini_cmdlist(struct g2d_data *g2d) { … } static struct g2d_cmdlist_node *g2d_get_cmdlist(struct g2d_data *g2d) { … } static void g2d_put_cmdlist(struct g2d_data *g2d, struct g2d_cmdlist_node *node) { … } static void g2d_add_cmdlist_to_inuse(struct drm_exynos_file_private *file_priv, struct g2d_cmdlist_node *node) { … } static void g2d_userptr_put_dma_addr(struct g2d_data *g2d, void *obj, bool force) { … } static dma_addr_t *g2d_userptr_get_dma_addr(struct g2d_data *g2d, unsigned long userptr, unsigned long size, struct drm_file *filp, void **obj) { … } static void g2d_userptr_free_all(struct g2d_data *g2d, struct drm_file *filp) { … } static enum g2d_reg_type g2d_get_reg_type(struct g2d_data *g2d, int reg_offset) { … } static unsigned long g2d_get_buf_bpp(unsigned int format) { … } static bool g2d_check_buf_desc_is_valid(struct g2d_data *g2d, struct g2d_buf_desc *buf_desc, enum g2d_reg_type reg_type, unsigned long size) { … } static int g2d_map_cmdlist_gem(struct g2d_data *g2d, struct g2d_cmdlist_node *node, struct drm_device *drm_dev, struct drm_file *file) { … } static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d, struct g2d_cmdlist_node *node, struct drm_file *filp) { … } static void g2d_dma_start(struct g2d_data *g2d, struct g2d_runqueue_node *runqueue_node) { … } static struct g2d_runqueue_node *g2d_get_runqueue_node(struct g2d_data *g2d) { … } static void g2d_free_runqueue_node(struct g2d_data *g2d, struct g2d_runqueue_node *runqueue_node) { … } /** * g2d_remove_runqueue_nodes - remove items from the list of runqueue nodes * @g2d: G2D state object * @file: if not zero, only remove items with this DRM file * * Has to be called under runqueue lock. */ static void g2d_remove_runqueue_nodes(struct g2d_data *g2d, struct drm_file *file) { … } static void g2d_runqueue_worker(struct work_struct *work) { … } static void g2d_finish_event(struct g2d_data *g2d, u32 cmdlist_no) { … } static irqreturn_t g2d_irq_handler(int irq, void *dev_id) { … } /** * g2d_wait_finish - wait for the G2D engine to finish the current runqueue node * @g2d: G2D state object * @file: if not zero, only wait if the current runqueue node belongs * to the DRM file * * Should the engine not become idle after a 100ms timeout, a hardware * reset is issued. */ static void g2d_wait_finish(struct g2d_data *g2d, struct drm_file *file) { … } static int g2d_check_reg_offset(struct g2d_data *g2d, struct g2d_cmdlist_node *node, int nr, bool for_addr) { … } /* ioctl functions */ int exynos_g2d_get_ver_ioctl(struct drm_device *drm_dev, void *data, struct drm_file *file) { … } int exynos_g2d_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data, struct drm_file *file) { … } int exynos_g2d_exec_ioctl(struct drm_device *drm_dev, void *data, struct drm_file *file) { … } int g2d_open(struct drm_device *drm_dev, struct drm_file *file) { … } void g2d_close(struct drm_device *drm_dev, struct drm_file *file) { … } static int g2d_bind(struct device *dev, struct device *master, void *data) { … } static void g2d_unbind(struct device *dev, struct device *master, void *data) { … } static const struct component_ops g2d_component_ops = …; static int g2d_probe(struct platform_device *pdev) { … } static void g2d_remove(struct platform_device *pdev) { … } static int g2d_suspend(struct device *dev) { … } static int g2d_resume(struct device *dev) { … } static int g2d_runtime_suspend(struct device *dev) { … } static int g2d_runtime_resume(struct device *dev) { … } static const struct dev_pm_ops g2d_pm_ops = …; static const struct of_device_id exynos_g2d_match[] = …; MODULE_DEVICE_TABLE(of, exynos_g2d_match); struct platform_driver g2d_driver = …;
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