[mirror_ubuntu-disco-kernel.git] / drivers / gpu / drm / bochs / bochs.h

/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/io.h>
#include <linux/console.h>

#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_encoder.h>
#include <drm/drm_fb_helper.h>

#include <drm/drm_gem.h>

#include <drm/ttm/ttm_bo_driver.h>
#include <drm/ttm/ttm_page_alloc.h>

/* ---------------------------------------------------------------------- */

#define VBE_DISPI_IOPORT_INDEX           0x01CE
#define VBE_DISPI_IOPORT_DATA            0x01CF

#define VBE_DISPI_INDEX_ID               0x0
#define VBE_DISPI_INDEX_XRES             0x1
#define VBE_DISPI_INDEX_YRES             0x2
#define VBE_DISPI_INDEX_BPP              0x3
#define VBE_DISPI_INDEX_ENABLE           0x4
#define VBE_DISPI_INDEX_BANK             0x5
#define VBE_DISPI_INDEX_VIRT_WIDTH       0x6
#define VBE_DISPI_INDEX_VIRT_HEIGHT      0x7
#define VBE_DISPI_INDEX_X_OFFSET         0x8
#define VBE_DISPI_INDEX_Y_OFFSET         0x9
#define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa

#define VBE_DISPI_ID0                    0xB0C0
#define VBE_DISPI_ID1                    0xB0C1
#define VBE_DISPI_ID2                    0xB0C2
#define VBE_DISPI_ID3                    0xB0C3
#define VBE_DISPI_ID4                    0xB0C4
#define VBE_DISPI_ID5                    0xB0C5

#define VBE_DISPI_DISABLED               0x00
#define VBE_DISPI_ENABLED                0x01
#define VBE_DISPI_GETCAPS                0x02
#define VBE_DISPI_8BIT_DAC               0x20
#define VBE_DISPI_LFB_ENABLED            0x40
#define VBE_DISPI_NOCLEARMEM             0x80

/* ---------------------------------------------------------------------- */

enum bochs_types {
	BOCHS_QEMU_STDVGA,
	BOCHS_UNKNOWN,
};

struct bochs_framebuffer {
	struct drm_framebuffer base;
	struct drm_gem_object *obj;
};

struct bochs_device {
	/* hw */
	void __iomem   *mmio;
	int            ioports;
	void __iomem   *fb_map;
	unsigned long  fb_base;
	unsigned long  fb_size;

	/* mode */
	u16 xres;
	u16 yres;
	u16 yres_virtual;
	u32 stride;
	u32 bpp;

	/* drm */
	struct drm_device  *dev;
	struct drm_crtc crtc;
	struct drm_encoder encoder;
	struct drm_connector connector;
	bool mode_config_initialized;

	/* ttm */
	struct {
		struct drm_global_reference mem_global_ref;
		struct ttm_bo_global_ref bo_global_ref;
		struct ttm_bo_device bdev;
		bool initialized;
	} ttm;

	/* fbdev */
	struct {
		struct bochs_framebuffer gfb;
		struct drm_fb_helper helper;
		int size;
		bool initialized;
	} fb;
};

#define to_bochs_framebuffer(x) container_of(x, struct bochs_framebuffer, base)

struct bochs_bo {
	struct ttm_buffer_object bo;
	struct ttm_placement placement;
	struct ttm_bo_kmap_obj kmap;
	struct drm_gem_object gem;
	struct ttm_place placements[3];
	int pin_count;
};

static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo)
{
	return container_of(bo, struct bochs_bo, bo);
}

static inline struct bochs_bo *gem_to_bochs_bo(struct drm_gem_object *gem)
{
	return container_of(gem, struct bochs_bo, gem);
}

#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)

static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
{
	return drm_vma_node_offset_addr(&bo->bo.vma_node);
}

/* ---------------------------------------------------------------------- */

/* bochs_hw.c */
int bochs_hw_init(struct drm_device *dev, uint32_t flags);
void bochs_hw_fini(struct drm_device *dev);

void bochs_hw_setmode(struct bochs_device *bochs,
		      struct drm_display_mode *mode);
void bochs_hw_setbase(struct bochs_device *bochs,
		      int x, int y, u64 addr);

/* bochs_mm.c */
int bochs_mm_init(struct bochs_device *bochs);
void bochs_mm_fini(struct bochs_device *bochs);
int bochs_mmap(struct file *filp, struct vm_area_struct *vma);

int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
		     struct drm_gem_object **obj);
int bochs_gem_init_object(struct drm_gem_object *obj);
void bochs_gem_free_object(struct drm_gem_object *obj);
int bochs_dumb_create(struct drm_file *file, struct drm_device *dev,
		      struct drm_mode_create_dumb *args);
int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
			   uint32_t handle, uint64_t *offset);

int bochs_framebuffer_init(struct drm_device *dev,
			   struct bochs_framebuffer *gfb,
			   const struct drm_mode_fb_cmd2 *mode_cmd,
			   struct drm_gem_object *obj);
int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag, u64 *gpu_addr);
int bochs_bo_unpin(struct bochs_bo *bo);

extern const struct drm_mode_config_funcs bochs_mode_funcs;

/* bochs_kms.c */
int bochs_kms_init(struct bochs_device *bochs);
void bochs_kms_fini(struct bochs_device *bochs);

/* bochs_fbdev.c */
int bochs_fbdev_init(struct bochs_device *bochs);
void bochs_fbdev_fini(struct bochs_device *bochs);
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
0a6659bd	2	#include <linux/io.h>
b8ccd70f	3	#include <linux/console.h>
0a6659bd GH	4
	5	#include <drm/drmP.h>
	6	#include <drm/drm_crtc.h>
	7	#include <drm/drm_crtc_helper.h>
9338203c	8	#include <drm/drm_encoder.h>
0a6659bd GH	9	#include <drm/drm_fb_helper.h>
0a6659bd GH	10
d9fc9413 DV	11	#include <drm/drm_gem.h>
d9fc9413 DV	12
61da5407 MY	13	#include <drm/ttm/ttm_bo_driver.h>
61da5407 MY	14	#include <drm/ttm/ttm_page_alloc.h>
0a6659bd GH	15
	16	/* ---------------------------------------------------------------------- */
	17
	18	#define VBE_DISPI_IOPORT_INDEX 0x01CE
	19	#define VBE_DISPI_IOPORT_DATA 0x01CF
	20
	21	#define VBE_DISPI_INDEX_ID 0x0
	22	#define VBE_DISPI_INDEX_XRES 0x1
	23	#define VBE_DISPI_INDEX_YRES 0x2
	24	#define VBE_DISPI_INDEX_BPP 0x3
	25	#define VBE_DISPI_INDEX_ENABLE 0x4
	26	#define VBE_DISPI_INDEX_BANK 0x5
	27	#define VBE_DISPI_INDEX_VIRT_WIDTH 0x6
	28	#define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7
	29	#define VBE_DISPI_INDEX_X_OFFSET 0x8
	30	#define VBE_DISPI_INDEX_Y_OFFSET 0x9
	31	#define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa
	32
	33	#define VBE_DISPI_ID0 0xB0C0
	34	#define VBE_DISPI_ID1 0xB0C1
	35	#define VBE_DISPI_ID2 0xB0C2
	36	#define VBE_DISPI_ID3 0xB0C3
	37	#define VBE_DISPI_ID4 0xB0C4
	38	#define VBE_DISPI_ID5 0xB0C5
	39
	40	#define VBE_DISPI_DISABLED 0x00
	41	#define VBE_DISPI_ENABLED 0x01
	42	#define VBE_DISPI_GETCAPS 0x02
	43	#define VBE_DISPI_8BIT_DAC 0x20
	44	#define VBE_DISPI_LFB_ENABLED 0x40
	45	#define VBE_DISPI_NOCLEARMEM 0x80
	46
	47	/* ---------------------------------------------------------------------- */
	48
	49	enum bochs_types {
	50	BOCHS_QEMU_STDVGA,
	51	BOCHS_UNKNOWN,
	52	};
	53
	54	struct bochs_framebuffer {
	55	struct drm_framebuffer base;
	56	struct drm_gem_object *obj;
	57	};
	58
	59	struct bochs_device {
	60	/* hw */
	61	void __iomem *mmio;
	62	int ioports;
	63	void __iomem *fb_map;
	64	unsigned long fb_base;
	65	unsigned long fb_size;
	66
	67	/* mode */
	68	u16 xres;
	69	u16 yres;
	70	u16 yres_virtual;
	71	u32 stride;
	72	u32 bpp;
	73
	74	/* drm */
	75	struct drm_device *dev;
	76	struct drm_crtc crtc;
	77	struct drm_encoder encoder;
	78	struct drm_connector connector;
79	bool mode_config_initialized;
80
81	/* ttm */
82	struct {
83	struct drm_global_reference mem_global_ref;
84	struct ttm_bo_global_ref bo_global_ref;
85	struct ttm_bo_device bdev;
86	bool initialized;
87	} ttm;
88
89	/* fbdev */
90	struct {
91	struct bochs_framebuffer gfb;
92	struct drm_fb_helper helper;
93	int size;
0a6659bd GH	94	bool initialized;
	95	} fb;
	96	};
	97
	98	#define to_bochs_framebuffer(x) container_of(x, struct bochs_framebuffer, base)
	99
	100	struct bochs_bo {
	101	struct ttm_buffer_object bo;
	102	struct ttm_placement placement;
	103	struct ttm_bo_kmap_obj kmap;
	104	struct drm_gem_object gem;
f1217ed0	105	struct ttm_place placements[3];
0a6659bd GH	106	int pin_count;
	107	};
	108
	109	static inline struct bochs_bo bochs_bo(struct ttm_buffer_object bo)
	110	{
	111	return container_of(bo, struct bochs_bo, bo);
	112	}
	113
	114	static inline struct bochs_bo gem_to_bochs_bo(struct drm_gem_object gem)
	115	{
	116	return container_of(gem, struct bochs_bo, gem);
	117	}
	118
	119	#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
	120
	121	static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo)
	122	{
	123	return drm_vma_node_offset_addr(&bo->bo.vma_node);
	124	}
	125
	126	/* ---------------------------------------------------------------------- */
	127
	128	/* bochs_hw.c */
	129	int bochs_hw_init(struct drm_device *dev, uint32_t flags);
	130	void bochs_hw_fini(struct drm_device *dev);
	131
	132	void bochs_hw_setmode(struct bochs_device *bochs,
	133	struct drm_display_mode *mode);
	134	void bochs_hw_setbase(struct bochs_device *bochs,
	135	int x, int y, u64 addr);
	136
	137	/* bochs_mm.c */
	138	int bochs_mm_init(struct bochs_device *bochs);
	139	void bochs_mm_fini(struct bochs_device *bochs);
	140	int bochs_mmap(struct file filp, struct vm_area_struct vma);
	141
	142	int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel,
	143	struct drm_gem_object **obj);
	144	int bochs_gem_init_object(struct drm_gem_object *obj);
	145	void bochs_gem_free_object(struct drm_gem_object *obj);
	146	int bochs_dumb_create(struct drm_file file, struct drm_device dev,
	147	struct drm_mode_create_dumb *args);
	148	int bochs_dumb_mmap_offset(struct drm_file file, struct drm_device dev,
	149	uint32_t handle, uint64_t *offset);
	150
	151	int bochs_framebuffer_init(struct drm_device *dev,
	152	struct bochs_framebuffer *gfb,
1eb83451	153	const struct drm_mode_fb_cmd2 *mode_cmd,
0a6659bd GH	154	struct drm_gem_object *obj);
	155	int bochs_bo_pin(struct bochs_bo bo, u32 pl_flag, u64 gpu_addr);
	156	int bochs_bo_unpin(struct bochs_bo *bo);
	157
	158	extern const struct drm_mode_config_funcs bochs_mode_funcs;
	159
	160	/* bochs_kms.c */
	161	int bochs_kms_init(struct bochs_device *bochs);
	162	void bochs_kms_fini(struct bochs_device *bochs);
	163
	164	/* bochs_fbdev.c */
	165	int bochs_fbdev_init(struct bochs_device *bochs);
	166	void bochs_fbdev_fini(struct bochs_device *bochs);