nouveau_drv.h

/*
 * Copyright 2005 Stephane Marchesin.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef __NOUVEAU_DRV_H__
#define __NOUVEAU_DRV_H__

#define DRIVER_AUTHOR		"Stephane Marchesin"
#define DRIVER_EMAIL		"dri-devel@lists.sourceforge.net"

#define DRIVER_NAME		"nouveau"
#define DRIVER_DESC		"nVidia Riva/TNT/GeForce"
#define DRIVER_DATE		"20090420"

#define DRIVER_MAJOR		0
#define DRIVER_MINOR		0
#define DRIVER_PATCHLEVEL	16

#define NOUVEAU_FAMILY   0x0000FFFF
#define NOUVEAU_FLAGS    0xFFFF0000

#include "ttm/ttm_bo_api.h"
#include "ttm/ttm_bo_driver.h"
#include "ttm/ttm_placement.h"
#include "ttm/ttm_memory.h"
#include "ttm/ttm_module.h"

struct nouveau_fpriv {
	struct ttm_object_file *tfile;
};

#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)

#include "nouveau_drm.h"
#include "nouveau_reg.h"
#include "nouveau_bios.h"
#include "nouveau_util.h"
struct nouveau_grctx;

#define MAX_NUM_DCB_ENTRIES 16

#define NOUVEAU_MAX_CHANNEL_NR 128
#define NOUVEAU_MAX_TILE_NR 15

#define NV50_VM_MAX_VRAM (2*1024*1024*1024ULL)
#define NV50_VM_BLOCK    (512*1024*1024ULL)
#define NV50_VM_VRAM_NR  (NV50_VM_MAX_VRAM / NV50_VM_BLOCK)

struct nouveau_tile_reg {
	bool used;
	uint32_t addr;
	uint32_t limit;
	uint32_t pitch;
	uint32_t zcomp;
	struct drm_mm_node *tag_mem;
	struct nouveau_fence *fence;
};

struct nouveau_bo {
	struct ttm_buffer_object bo;
	struct ttm_placement placement;
	u32 placements[3];
	u32 busy_placements[3];
	struct ttm_bo_kmap_obj kmap;
	struct list_head head;

	/* protected by ttm_bo_reserve() */
	struct drm_file *reserved_by;
	struct list_head entry;
	int pbbo_index;
	bool validate_mapped;

	struct nouveau_channel *channel;

	bool mappable;
	bool no_vm;

	uint32_t tile_mode;
	uint32_t tile_flags;
	struct nouveau_tile_reg *tile;

	struct drm_gem_object *gem;
	int pin_refcnt;
};

#define nouveau_bo_tile_layout(nvbo)				\
	((nvbo)->tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK)

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

static inline struct nouveau_bo *
nouveau_gem_object(struct drm_gem_object *gem)
{
	return gem ? gem->driver_private : NULL;
}

/* TODO: submit equivalent to TTM generic API upstream? */
static inline void __iomem *
nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo)
{
	bool is_iomem;
	void __iomem *ioptr = (void __force __iomem *)ttm_kmap_obj_virtual(
						&nvbo->kmap, &is_iomem);
	WARN_ON_ONCE(ioptr && !is_iomem);
	return ioptr;
}

enum nouveau_flags {
	NV_NFORCE   = 0x10000000,
	NV_NFORCE2  = 0x20000000
};

#define NVOBJ_ENGINE_SW		0
#define NVOBJ_ENGINE_GR		1
#define NVOBJ_ENGINE_PPP	2
#define NVOBJ_ENGINE_COPY	3
#define NVOBJ_ENGINE_VP		4
#define NVOBJ_ENGINE_CRYPT      5
#define NVOBJ_ENGINE_BSP	6
#define NVOBJ_ENGINE_DISPLAY	0xcafe0001
#define NVOBJ_ENGINE_INT	0xdeadbeef

#define NVOBJ_FLAG_ZERO_ALLOC		(1 << 1)
#define NVOBJ_FLAG_ZERO_FREE		(1 << 2)
struct nouveau_gpuobj {
	struct drm_device *dev;
	struct kref refcount;
	struct list_head list;

	struct drm_mm_node *im_pramin;
	struct nouveau_bo *im_backing;
	uint32_t *im_backing_suspend;
	int im_bound;

	uint32_t flags;

	u32 size;
	u32 pinst;
	u32 cinst;
	u64 vinst;

	uint32_t engine;
	uint32_t class;

	void (*dtor)(struct drm_device *, struct nouveau_gpuobj *);
	void *priv;
};

struct nouveau_page_flip_state {
	struct list_head head;
	struct drm_pending_vblank_event *event;
	int crtc, bpp, pitch, x, y;
	uint64_t offset;
};

enum nouveau_channel_mutex_class {
	NOUVEAU_UCHANNEL_MUTEX,
	NOUVEAU_KCHANNEL_MUTEX
};

struct nouveau_channel {
	struct drm_device *dev;
	int id;

	/* references to the channel data structure */
	struct kref ref;
	/* users of the hardware channel resources, the hardware
	 * context will be kicked off when it reaches zero. */
	atomic_t users;
	struct mutex mutex;

	/* owner of this fifo */
	struct drm_file *file_priv;
	/* mapping of the fifo itself */
	struct drm_local_map *map;

	/* mapping of the regs controling the fifo */
	void __iomem *user;
	uint32_t user_get;
	uint32_t user_put;

	/* Fencing */
	struct {
		/* lock protects the pending list only */
		spinlock_t lock;
		struct list_head pending;
		uint32_t sequence;
		uint32_t sequence_ack;
		atomic_t last_sequence_irq;
	} fence;

	/* DMA push buffer */
	struct nouveau_gpuobj *pushbuf;
	struct nouveau_bo     *pushbuf_bo;
	uint32_t               pushbuf_base;

	/* Notifier memory */
	struct nouveau_bo *notifier_bo;
	struct drm_mm notifier_heap;

	/* PFIFO context */
	struct nouveau_gpuobj *ramfc;
	struct nouveau_gpuobj *cache;

	/* PGRAPH context */
	/* XXX may be merge 2 pointers as private data ??? */
	struct nouveau_gpuobj *ramin_grctx;
	struct nouveau_gpuobj *crypt_ctx;
	void *pgraph_ctx;

	/* NV50 VM */
	struct nouveau_gpuobj *vm_pd;
	struct nouveau_gpuobj *vm_gart_pt;
	struct nouveau_gpuobj *vm_vram_pt[NV50_VM_VRAM_NR];

	/* Objects */
	struct nouveau_gpuobj *ramin; /* Private instmem */
	struct drm_mm          ramin_heap; /* Private PRAMIN heap */
	struct nouveau_ramht  *ramht; /* Hash table */

	/* GPU object info for stuff used in-kernel (mm_enabled) */
	uint32_t m2mf_ntfy;
	uint32_t vram_handle;
	uint32_t gart_handle;
	bool accel_done;

	/* Push buffer state (only for drm's channel on !mm_enabled) */
	struct {
		int max;
		int free;
		int cur;
		int put;
		/* access via pushbuf_bo */

		int ib_base;
		int ib_max;
		int ib_free;
		int ib_put;
	} dma;

	uint32_t sw_subchannel[8];

	struct {
		struct nouveau_gpuobj *vblsem;
		uint32_t vblsem_head;
		uint32_t vblsem_offset;
		uint32_t vblsem_rval;
		struct list_head vbl_wait;
		struct list_head flip;
	} nvsw;

	struct {
		bool active;
		char name[32];
		struct drm_info_list info;
	} debugfs;
};

struct nouveau_instmem_engine {
	void	*priv;

	int	(*init)(struct drm_device *dev);
	void	(*takedown)(struct drm_device *dev);
	int	(*suspend)(struct drm_device *dev);
	void	(*resume)(struct drm_device *dev);

	int	(*populate)(struct drm_device *, struct nouveau_gpuobj *,
			    u32 *size, u32 align);
	void	(*clear)(struct drm_device *, struct nouveau_gpuobj *);
	int	(*bind)(struct drm_device *, struct nouveau_gpuobj *);
	int	(*unbind)(struct drm_device *, struct nouveau_gpuobj *);
	void	(*flush)(struct drm_device *);
};

struct nouveau_mc_engine {
	int  (*init)(struct drm_device *dev);
	void (*takedown)(struct drm_device *dev);
};

struct nouveau_timer_engine {
	int      (*init)(struct drm_device *dev);
	void     (*takedown)(struct drm_device *dev);
	uint64_t (*read)(struct drm_device *dev);
};

struct nouveau_fb_engine {
	int num_tiles;
	struct drm_mm tag_heap;

	int  (*init)(struct drm_device *dev);
	void (*takedown)(struct drm_device *dev);

	void (*init_tile_region)(struct drm_device *dev, int i,
				 uint32_t addr, uint32_t size,
				 uint32_t pitch, uint32_t flags);
	void (*set_tile_region)(struct drm_device *dev, int i);
	void (*free_tile_region)(struct drm_device *dev, int i);
};

struct nouveau_fifo_engine {
	int  channels;

	struct nouveau_gpuobj *playlist[2];
	int cur_playlist;

	int  (*init)(struct drm_device *);
	void (*takedown)(struct drm_device *);

	void (*disable)(struct drm_device *);
	void (*enable)(struct drm_device *);
	bool (*reassign)(struct drm_device *, bool enable);
	bool (*cache_pull)(struct drm_device *dev, bool enable);

	int  (*channel_id)(struct drm_device *);

	int  (*create_context)(struct nouveau_channel *);
	void (*destroy_context)(struct nouveau_channel *);
	int  (*load_context)(struct nouveau_channel *);
	int  (*unload_context)(struct drm_device *);
	void (*tlb_flush)(struct drm_device *dev);
};

struct nouveau_pgraph_engine {
	bool accel_blocked;
	bool registered;
	int grctx_size;

	/* NV2x/NV3x context table (0x400780) */
	struct nouveau_gpuobj *ctx_table;

	int  (*init)(struct drm_device *);
	void (*takedown)(struct drm_device *);

	void (*fifo_access)(struct drm_device *, bool);

	struct nouveau_channel *(*channel)(struct drm_device *);
	int  (*create_context)(struct nouveau_channel *);
	void (*destroy_context)(struct nouveau_channel *);
	int  (*load_context)(struct nouveau_channel *);
	int  (*unload_context)(struct drm_device *);
	void (*tlb_flush)(struct drm_device *dev);

	void (*set_tile_region)(struct drm_device *dev, int i);
};

struct nouveau_display_engine {
	int (*early_init)(struct drm_device *);
	void (*late_takedown)(struct drm_device *);
	int (*create)(struct drm_device *);
	int (*init)(struct drm_device *);
	void (*destroy)(struct drm_device *);
};

struct nouveau_gpio_engine {
	int  (*init)(struct drm_device *);
	void (*takedown)(struct drm_device *);

	int  (*get)(struct drm_device *, enum dcb_gpio_tag);
	int  (*set)(struct drm_device *, enum dcb_gpio_tag, int state);

	void (*irq_enable)(struct drm_device *, enum dcb_gpio_tag, bool on);
};

struct nouveau_pm_voltage_level {
	u8 voltage;
	u8 vid;
};

struct nouveau_pm_voltage {
	bool supported;
	u8 vid_mask;

	struct nouveau_pm_voltage_level *level;
	int nr_level;
};

#define NOUVEAU_PM_MAX_LEVEL 8
struct nouveau_pm_level {
	struct device_attribute dev_attr;
	char name[32];
	int id;

	u32 core;
	u32 memory;
	u32 shader;
	u32 unk05;

	u8 voltage;
	u8 fanspeed;

	u16 memscript;
};

struct nouveau_pm_temp_sensor_constants {
	u16 offset_constant;
	s16 offset_mult;
	u16 offset_div;
	u16 slope_mult;
	u16 slope_div;
};

struct nouveau_pm_threshold_temp {
	s16 critical;
	s16 down_clock;
	s16 fan_boost;
};

struct nouveau_pm_memtiming {
	u32 reg_100220;
	u32 reg_100224;
	u32 reg_100228;
	u32 reg_10022c;
	u32 reg_100230;
	u32 reg_100234;
	u32 reg_100238;
	u32 reg_10023c;
};

struct nouveau_pm_memtimings {
	bool supported;
	struct nouveau_pm_memtiming *timing;
	int nr_timing;
};

struct nouveau_pm_engine {
	struct nouveau_pm_voltage voltage;
	struct nouveau_pm_level perflvl[NOUVEAU_PM_MAX_LEVEL];
	int nr_perflvl;
	struct nouveau_pm_memtimings memtimings;
	struct nouveau_pm_temp_sensor_constants sensor_constants;
	struct nouveau_pm_threshold_temp threshold_temp;

	struct nouveau_pm_level boot;
	struct nouveau_pm_level *cur;

	struct device *hwmon;
	struct notifier_block acpi_nb;

	int (*clock_get)(struct drm_device *, u32 id);
	void *(*clock_pre)(struct drm_device *, struct nouveau_pm_level *,
			   u32 id, int khz);
	void (*clock_set)(struct drm_device *, void *);
	int (*voltage_get)(struct drm_device *);
	int (*voltage_set)(struct drm_device *, int voltage);
	int (*fanspeed_get)(struct drm_device *);
	int (*fanspeed_set)(struct drm_device *, int fanspeed);
	int (*temp_get)(struct drm_device *);
};

struct nouveau_crypt_engine {
	bool registered;

	int  (*init)(struct drm_device *);
	void (*takedown)(struct drm_device *);
	int  (*create_context)(struct nouveau_channel *);
	void (*destroy_context)(struct nouveau_channel *);
	void (*tlb_flush)(struct drm_device *dev);
};

struct nouveau_engine {
	struct nouveau_instmem_engine instmem;
	struct nouveau_mc_engine      mc;
	struct nouveau_timer_engine   timer;
	struct nouveau_fb_engine      fb;
	struct nouveau_pgraph_engine  graph;
	struct nouveau_fifo_engine    fifo;
	struct nouveau_display_engine display;
	struct nouveau_gpio_engine    gpio;
	struct nouveau_pm_engine      pm;
	struct nouveau_crypt_engine   crypt;
};

struct nouveau_pll_vals {
	union {
		struct {
#ifdef __BIG_ENDIAN
			uint8_t N1, M1, N2, M2;
#else
			uint8_t M1, N1, M2, N2;
#endif
		};
		struct {
			uint16_t NM1, NM2;
		} __attribute__((packed));
	};
	int log2P;

	int refclk;
};

enum nv04_fp_display_regs {
	FP_DISPLAY_END,
	FP_TOTAL,
	FP_CRTC,
	FP_SYNC_START,
	FP_SYNC_END,
	FP_VALID_START,
	FP_VALID_END
};

struct nv04_crtc_reg {
	unsigned char MiscOutReg;
	uint8_t CRTC[0xa0];
	uint8_t CR58[0x10];
	uint8_t Sequencer[5];
	uint8_t Graphics[9];
	uint8_t Attribute[21];
	unsigned char DAC[768];

	/* PCRTC regs */
	uint32_t fb_start;
	uint32_t crtc_cfg;
	uint32_t cursor_cfg;
	uint32_t gpio_ext;
	uint32_t crtc_830;
	uint32_t crtc_834;
	uint32_t crtc_850;
	uint32_t crtc_eng_ctrl;

	/* PRAMDAC regs */
	uint32_t nv10_cursync;
	struct nouveau_pll_vals pllvals;
	uint32_t ramdac_gen_ctrl;
	uint32_t ramdac_630;
	uint32_t ramdac_634;
	uint32_t tv_setup;
	uint32_t tv_vtotal;
	uint32_t tv_vskew;
	uint32_t tv_vsync_delay;
	uint32_t tv_htotal;
	uint32_t tv_hskew;
	uint32_t tv_hsync_delay;
	uint32_t tv_hsync_delay2;
	uint32_t fp_horiz_regs[7];
	uint32_t fp_vert_regs[7];
	uint32_t dither;
	uint32_t fp_control;
	uint32_t dither_regs[6];
	uint32_t fp_debug_0;
	uint32_t fp_debug_1;
	uint32_t fp_debug_2;
	uint32_t fp_margin_color;
	uint32_t ramdac_8c0;
	uint32_t ramdac_a20;
	uint32_t ramdac_a24;
	uint32_t ramdac_a34;
	uint32_t ctv_regs[38];
};

struct nv04_output_reg {
	uint32_t output;
	int head;
};

struct nv04_mode_state {
	struct nv04_crtc_reg crtc_reg[2];
	uint32_t pllsel;
	uint32_t sel_clk;
};

enum nouveau_card_type {
	NV_04      = 0x00,
	NV_10      = 0x10,
	NV_20      = 0x20,
	NV_30      = 0x30,
	NV_40      = 0x40,
	NV_50      = 0x50,
	NV_C0      = 0xc0,
};

struct drm_nouveau_private {
	struct drm_device *dev;

	/* the card type, takes NV_* as values */
	enum nouveau_card_type card_type;
	/* exact chipset, derived from NV_PMC_BOOT_0 */
	int chipset;
	int flags;

	void __iomem *mmio;

	spinlock_t ramin_lock;
	void __iomem *ramin;
	u32 ramin_size;
	u32 ramin_base;
	bool ramin_available;
	struct drm_mm ramin_heap;
	struct list_head gpuobj_list;
	struct list_head classes;

	struct nouveau_bo *vga_ram;

	/* interrupt handling */
	void (*irq_handler[32])(struct drm_device *);
	bool msi_enabled;
	struct workqueue_struct *wq;
	struct work_struct irq_work;
	struct work_struct hpd_work;

	struct {
		spinlock_t lock;
		uint32_t hpd0_bits;
		uint32_t hpd1_bits;
	} hpd_state;

	struct list_head vbl_waiting;

	struct {
		struct drm_global_reference mem_global_ref;
		struct ttm_bo_global_ref bo_global_ref;
		struct ttm_bo_device bdev;
		atomic_t validate_sequence;
	} ttm;

	struct {
		spinlock_t lock;
		struct drm_mm heap;
		struct nouveau_bo *bo;
	} fence;

	struct {
		spinlock_t lock;
		struct nouveau_channel *ptr[NOUVEAU_MAX_CHANNEL_NR];
	} channels;

	struct nouveau_engine engine;
	struct nouveau_channel *channel;

	/* For PFIFO and PGRAPH. */
	spinlock_t context_switch_lock;

	/* RAMIN configuration, RAMFC, RAMHT and RAMRO offsets */
	struct nouveau_ramht  *ramht;
	struct nouveau_gpuobj *ramfc;
	struct nouveau_gpuobj *ramro;

	uint32_t ramin_rsvd_vram;

	struct {
		enum {
			NOUVEAU_GART_NONE = 0,
			NOUVEAU_GART_AGP,
			NOUVEAU_GART_SGDMA
		} type;
		uint64_t aper_base;
		uint64_t aper_size;
		uint64_t aper_free;

		struct nouveau_gpuobj *sg_ctxdma;
		struct page *sg_dummy_page;
		dma_addr_t sg_dummy_bus;
	} gart_info;

	/* nv10-nv40 tiling regions */
	struct {
		struct nouveau_tile_reg reg[NOUVEAU_MAX_TILE_NR];
		spinlock_t lock;
	} tile;

	/* VRAM/fb configuration */
	uint64_t vram_size;
	uint64_t vram_sys_base;
	u32 vram_rblock_size;

	uint64_t fb_phys;
	uint64_t fb_available_size;
	uint64_t fb_mappable_pages;
	uint64_t fb_aper_free;
	int fb_mtrr;

	/* G8x/G9x virtual address space */
	uint64_t vm_gart_base;
	uint64_t vm_gart_size;
	uint64_t vm_vram_base;
	uint64_t vm_vram_size;
	uint64_t vm_end;
	struct nouveau_gpuobj *vm_vram_pt[NV50_VM_VRAM_NR];
	int vm_vram_pt_nr;

	struct nvbios vbios;

	struct nv04_mode_state mode_reg;
	struct nv04_mode_state saved_reg;
	uint32_t saved_vga_font[4][16384];
	uint32_t crtc_owner;
	uint32_t dac_users[4];

	struct nouveau_suspend_resume {
		uint32_t *ramin_copy;
	} susres;

	struct backlight_device *backlight;

	struct nouveau_channel *evo;
	u32 evo_alloc;
	struct {
		struct dcb_entry *dcb;
		u16 script;
		u32 pclk;
	} evo_irq;

	struct {
		struct dentry *channel_root;
	} debugfs;

	struct nouveau_fbdev *nfbdev;
	struct apertures_struct *apertures;
};

static inline struct drm_nouveau_private *
nouveau_private(struct drm_device *dev)
{
	return dev->dev_private;
}

static inline struct drm_nouveau_private *
nouveau_bdev(struct ttm_bo_device *bd)
{
	return container_of(bd, struct drm_nouveau_private, ttm.bdev);
}

static inline int
nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
{
	struct nouveau_bo *prev;

	if (!pnvbo)
		return -EINVAL;
	prev = *pnvbo;

	*pnvbo = ref ? nouveau_bo(ttm_bo_reference(&ref->bo)) : NULL;
	if (prev) {
		struct ttm_buffer_object *bo = &prev->bo;

		ttm_bo_unref(&bo);
	}

	return 0;
}

/* nouveau_drv.c */
extern int nouveau_agpmode;
extern int nouveau_duallink;
extern int nouveau_uscript_lvds;
extern int nouveau_uscript_tmds;
extern int nouveau_vram_pushbuf;
extern int nouveau_vram_notify;
extern int nouveau_fbpercrtc;
extern int nouveau_tv_disable;
extern char *nouveau_tv_norm;
extern int nouveau_reg_debug;
extern char *nouveau_vbios;
extern int nouveau_ignorelid;
extern int nouveau_nofbaccel;
extern int nouveau_noaccel;
extern int nouveau_force_post;
extern int nouveau_override_conntype;
extern char *nouveau_perflvl;
extern int nouveau_perflvl_wr;
extern int nouveau_msi;

extern int nouveau_pci_suspend(struct pci_dev *pdev, pm_message_t pm_state);
extern int nouveau_pci_resume(struct pci_dev *pdev);

/* nouveau_state.c */
extern void nouveau_preclose(struct drm_device *dev, struct drm_file *);
extern int  nouveau_load(struct drm_device *, unsigned long flags);
extern int  nouveau_firstopen(struct drm_device *);
extern void nouveau_lastclose(struct drm_device *);
extern int  nouveau_unload(struct drm_device *);
extern int  nouveau_ioctl_getparam(struct drm_device *, void *data,
				   struct drm_file *);
extern int  nouveau_ioctl_setparam(struct drm_device *, void *data,
				   struct drm_file *);
extern bool nouveau_wait_until(struct drm_device *, uint64_t timeout,
			       uint32_t reg, uint32_t mask, uint32_t val);
extern bool nouveau_wait_for_idle(struct drm_device *);
extern int  nouveau_card_init(struct drm_device *);

/* nouveau_mem.c */
extern int  nouveau_mem_vram_init(struct drm_device *);
extern void nouveau_mem_vram_fini(struct drm_device *);
extern int  nouveau_mem_gart_init(struct drm_device *);
extern void nouveau_mem_gart_fini(struct drm_device *);
extern int  nouveau_mem_init_agp(struct drm_device *);
extern int  nouveau_mem_reset_agp(struct drm_device *);
extern void nouveau_mem_close(struct drm_device *);
extern struct nouveau_tile_reg *nv10_mem_set_tiling(
	struct drm_device *dev, uint32_t addr, uint32_t size,
	uint32_t pitch, uint32_t flags);
extern void nv10_mem_put_tile_region(struct drm_device *dev,
				     struct nouveau_tile_reg *tile,
				     struct nouveau_fence *fence);
extern int  nv50_mem_vm_bind_linear(struct drm_device *, uint64_t virt,
				    uint32_t size, uint32_t flags,
				    uint64_t phys);
extern void nv50_mem_vm_unbind(struct drm_device *, uint64_t virt,
			       uint32_t size);

/* nouveau_notifier.c */
extern int  nouveau_notifier_init_channel(struct nouveau_channel *);
extern void nouveau_notifier_takedown_channel(struct nouveau_channel *);
extern int  nouveau_notifier_alloc(struct nouveau_channel *, uint32_t handle,
				   int cout, uint32_t *offset);
extern int  nouveau_notifier_offset(struct nouveau_gpuobj *, uint32_t *);
extern int  nouveau_ioctl_notifier_alloc(struct drm_device *, void *data,
					 struct drm_file *);
extern int  nouveau_ioctl_notifier_free(struct drm_device *, void *data,
					struct drm_file *);

/* nouveau_channel.c */
extern struct drm_ioctl_desc nouveau_ioctls[];
extern int nouveau_max_ioctl;
extern void nouveau_channel_cleanup(struct drm_device *, struct drm_file *);
extern int  nouveau_channel_alloc(struct drm_device *dev,
				  struct nouveau_channel **chan,
				  struct drm_file *file_priv,
				  uint32_t fb_ctxdma, uint32_t tt_ctxdma);
extern struct nouveau_channel *
nouveau_channel_get_unlocked(struct nouveau_channel *);
extern struct nouveau_channel *
nouveau_channel_get(struct drm_device *, struct drm_file *, int id);
extern void nouveau_channel_put_unlocked(struct nouveau_channel **);
extern void nouveau_channel_put(struct nouveau_channel **);
extern void nouveau_channel_ref(struct nouveau_channel *chan,
				struct nouveau_channel **pchan);

/* nouveau_object.c */
#define NVOBJ_CLASS(d,c,e) do {                                                \
	int ret = nouveau_gpuobj_class_new((d), (c), NVOBJ_ENGINE_##e);        \
	if (ret)                                                               \
		return ret;                                                    \
} while(0)

#define NVOBJ_MTHD(d,c,m,e) do {                                               \
	int ret = nouveau_gpuobj_mthd_new((d), (c), (m), (e));                 \
	if (ret)                                                               \
		return ret;                                                    \
} while(0)

extern int  nouveau_gpuobj_early_init(struct drm_device *);
extern int  nouveau_gpuobj_init(struct drm_device *);
extern void nouveau_gpuobj_takedown(struct drm_device *);
extern int  nouveau_gpuobj_suspend(struct drm_device *dev);
extern void nouveau_gpuobj_suspend_cleanup(struct drm_device *dev);
extern void nouveau_gpuobj_resume(struct drm_device *dev);
extern int  nouveau_gpuobj_class_new(struct drm_device *, u32 class, u32 eng);
extern int  nouveau_gpuobj_mthd_new(struct drm_device *, u32 class, u32 mthd,
				    int (*exec)(struct nouveau_channel *,
					        u32 class, u32 mthd, u32 data));
extern int  nouveau_gpuobj_mthd_call(struct nouveau_channel *, u32, u32, u32);
extern int  nouveau_gpuobj_mthd_call2(struct drm_device *, int, u32, u32, u32);
extern int nouveau_gpuobj_channel_init(struct nouveau_channel *,
				       uint32_t vram_h, uint32_t tt_h);
extern void nouveau_gpuobj_channel_takedown(struct nouveau_channel *);
extern int nouveau_gpuobj_new(struct drm_device *, struct nouveau_channel *,
			      uint32_t size, int align, uint32_t flags,
			      struct nouveau_gpuobj **);
extern void nouveau_gpuobj_ref(struct nouveau_gpuobj *,
			       struct nouveau_gpuobj **);
extern int nouveau_gpuobj_new_fake(struct drm_device *, u32 pinst, u64 vinst,
				   u32 size, u32 flags,
				   struct nouveau_gpuobj **);
extern int nouveau_gpuobj_dma_new(struct nouveau_channel *, int class,
				  uint64_t offset, uint64_t size, int access,
				  int target, struct nouveau_gpuobj **);
extern int nouveau_gpuobj_gart_dma_new(struct nouveau_channel *,
				       uint64_t offset, uint64_t size,
				       int access, struct nouveau_gpuobj **,
				       uint32_t *o_ret);
extern int nouveau_gpuobj_gr_new(struct nouveau_channel *, int class,
				 struct nouveau_gpuobj **);
extern int nouveau_ioctl_grobj_alloc(struct drm_device *, void *data,
				     struct drm_file *);
extern int nouveau_ioctl_gpuobj_free(struct drm_device *, void *data,
				     struct drm_file *);

/* nouveau_irq.c */
extern int         nouveau_irq_init(struct drm_device *);
extern void        nouveau_irq_fini(struct drm_device *);
extern irqreturn_t nouveau_irq_handler(DRM_IRQ_ARGS);
extern void        nouveau_irq_register(struct drm_device *, int status_bit,
					void (*)(struct drm_device *));
extern void        nouveau_irq_unregister(struct drm_device *, int status_bit);
extern void        nouveau_irq_preinstall(struct drm_device *);
extern int         nouveau_irq_postinstall(struct drm_device *);
extern void        nouveau_irq_uninstall(struct drm_device *);

/* nouveau_sgdma.c */
extern int nouveau_sgdma_init(struct drm_device *);
extern void nouveau_sgdma_takedown(struct drm_device *);
extern int nouveau_sgdma_get_page(struct drm_device *, uint32_t offset,
				  uint32_t *page);
extern struct ttm_backend *nouveau_sgdma_init_ttm(struct drm_device *);

/* nouveau_debugfs.c */
#if defined(CONFIG_DRM_NOUVEAU_DEBUG)
extern int  nouveau_debugfs_init(struct drm_minor *);
extern void nouveau_debugfs_takedown(struct drm_minor *);
extern int  nouveau_debugfs_channel_init(struct nouveau_channel *);
extern void nouveau_debugfs_channel_fini(struct nouveau_channel *);
#else
static inline int
nouveau_debugfs_init(struct drm_minor *minor)
{
	return 0;
}

static inline void nouveau_debugfs_takedown(struct drm_minor *minor)
{
}

static inline int
nouveau_debugfs_channel_init(struct nouveau_channel *chan)
{
	return 0;
}

static inline void
nouveau_debugfs_channel_fini(struct nouveau_channel *chan)
{
}
#endif

/* nouveau_dma.c */
extern void nouveau_dma_pre_init(struct nouveau_channel *);
extern int  nouveau_dma_init(struct nouveau_channel *);
extern int  nouveau_dma_wait(struct nouveau_channel *, int slots, int size);

/* nouveau_acpi.c */
#define ROM_BIOS_PAGE 4096
#if defined(CONFIG_ACPI)
void nouveau_register_dsm_handler(void);
void nouveau_unregister_dsm_handler(void);
int nouveau_acpi_get_bios_chunk(uint8_t *bios, int offset, int len);
bool nouveau_acpi_rom_supported(struct pci_dev *pdev);
int nouveau_acpi_edid(struct drm_device *, struct drm_connector *);
#else
static inline void nouveau_register_dsm_handler(void) {}
static inline void nouveau_unregister_dsm_handler(void) {}
static inline bool nouveau_acpi_rom_supported(struct pci_dev *pdev) { return false; }
static inline int nouveau_acpi_get_bios_chunk(uint8_t *bios, int offset, int len) { return -EINVAL; }
static inline int nouveau_acpi_edid(struct drm_device *dev, struct drm_connector *connector) { return -EINVAL; }
#endif

/* nouveau_backlight.c */
#ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
extern int nouveau_backlight_init(struct drm_device *);
extern void nouveau_backlight_exit(struct drm_device *);
#else
static inline int nouveau_backlight_init(struct drm_device *dev)
{
	return 0;
}

static inline void nouveau_backlight_exit(struct drm_device *dev) { }
#endif

/* nouveau_bios.c */
extern int nouveau_bios_init(struct drm_device *);
extern void nouveau_bios_takedown(struct drm_device *dev);
extern int nouveau_run_vbios_init(struct drm_device *);
extern void nouveau_bios_run_init_table(struct drm_device *, uint16_t table,
					struct dcb_entry *);
extern struct dcb_gpio_entry *nouveau_bios_gpio_entry(struct drm_device *,
						      enum dcb_gpio_tag);
extern struct dcb_connector_table_entry *
nouveau_bios_connector_entry(struct drm_device *, int index);
extern u32 get_pll_register(struct drm_device *, enum pll_types);
extern int get_pll_limits(struct drm_device *, uint32_t limit_match,
			  struct pll_lims *);
extern int nouveau_bios_run_display_table(struct drm_device *,
					  struct dcb_entry *,
					  uint32_t script, int pxclk);
extern void *nouveau_bios_dp_table(struct drm_device *, struct dcb_entry *,
				   int *length);