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linux/include/drm/i915_drm.h
Eric Anholt 5a125c3c79 i915: Add GEM ioctl to get available aperture size. 
This will let userland know when to submit its batchbuffers, before they get
too big to fit in the aperture.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-11-03 10:56:49 +10:00

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/*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS 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 _I915_DRM_H_
#define _I915_DRM_H_
/* Please note that modifications to all structs defined here are
* subject to backwards-compatibility constraints.
*/
#include "drm.h"
/* Each region is a minimum of 16k, and there are at most 255 of them.
*/
#define I915_NR_TEX_REGIONS 255 /* table size 2k - maximum due to use
* of chars for next/prev indices */
#define I915_LOG_MIN_TEX_REGION_SIZE 14
typedef struct _drm_i915_init {
enum {
I915_INIT_DMA = 0x01,
I915_CLEANUP_DMA = 0x02,
I915_RESUME_DMA = 0x03
} func;
unsigned int mmio_offset;
int sarea_priv_offset;
unsigned int ring_start;
unsigned int ring_end;
unsigned int ring_size;
unsigned int front_offset;
unsigned int back_offset;
unsigned int depth_offset;
unsigned int w;
unsigned int h;
unsigned int pitch;
unsigned int pitch_bits;
unsigned int back_pitch;
unsigned int depth_pitch;
unsigned int cpp;
unsigned int chipset;
} drm_i915_init_t;
typedef struct _drm_i915_sarea {
struct drm_tex_region texList[I915_NR_TEX_REGIONS + 1];
int last_upload; /* last time texture was uploaded */
int last_enqueue; /* last time a buffer was enqueued */
int last_dispatch; /* age of the most recently dispatched buffer */
int ctxOwner; /* last context to upload state */
int texAge;
int pf_enabled; /* is pageflipping allowed? */
int pf_active;
int pf_current_page; /* which buffer is being displayed? */
int perf_boxes; /* performance boxes to be displayed */
int width, height; /* screen size in pixels */
drm_handle_t front_handle;
int front_offset;
int front_size;
drm_handle_t back_handle;
int back_offset;
int back_size;
drm_handle_t depth_handle;
int depth_offset;
int depth_size;
drm_handle_t tex_handle;
int tex_offset;
int tex_size;
int log_tex_granularity;
int pitch;
int rotation; /* 0, 90, 180 or 270 */
int rotated_offset;
int rotated_size;
int rotated_pitch;
int virtualX, virtualY;
unsigned int front_tiled;
unsigned int back_tiled;
unsigned int depth_tiled;
unsigned int rotated_tiled;
unsigned int rotated2_tiled;
int pipeA_x;
int pipeA_y;
int pipeA_w;
int pipeA_h;
int pipeB_x;
int pipeB_y;
int pipeB_w;
int pipeB_h;
} drm_i915_sarea_t;
/* Flags for perf_boxes
*/
#define I915_BOX_RING_EMPTY 0x1
#define I915_BOX_FLIP 0x2
#define I915_BOX_WAIT 0x4
#define I915_BOX_TEXTURE_LOAD 0x8
#define I915_BOX_LOST_CONTEXT 0x10
/* I915 specific ioctls
* The device specific ioctl range is 0x40 to 0x79.
*/
#define DRM_I915_INIT 0x00
#define DRM_I915_FLUSH 0x01
#define DRM_I915_FLIP 0x02
#define DRM_I915_BATCHBUFFER 0x03
#define DRM_I915_IRQ_EMIT 0x04
#define DRM_I915_IRQ_WAIT 0x05
#define DRM_I915_GETPARAM 0x06
#define DRM_I915_SETPARAM 0x07
#define DRM_I915_ALLOC 0x08
#define DRM_I915_FREE 0x09
#define DRM_I915_INIT_HEAP 0x0a
#define DRM_I915_CMDBUFFER 0x0b
#define DRM_I915_DESTROY_HEAP 0x0c
#define DRM_I915_SET_VBLANK_PIPE 0x0d
#define DRM_I915_GET_VBLANK_PIPE 0x0e
#define DRM_I915_VBLANK_SWAP 0x0f
#define DRM_I915_HWS_ADDR 0x11
#define DRM_I915_GEM_INIT 0x13
#define DRM_I915_GEM_EXECBUFFER 0x14
#define DRM_I915_GEM_PIN 0x15
#define DRM_I915_GEM_UNPIN 0x16
#define DRM_I915_GEM_BUSY 0x17
#define DRM_I915_GEM_THROTTLE 0x18
#define DRM_I915_GEM_ENTERVT 0x19
#define DRM_I915_GEM_LEAVEVT 0x1a
#define DRM_I915_GEM_CREATE 0x1b
#define DRM_I915_GEM_PREAD 0x1c
#define DRM_I915_GEM_PWRITE 0x1d
#define DRM_I915_GEM_MMAP 0x1e
#define DRM_I915_GEM_SET_DOMAIN 0x1f
#define DRM_I915_GEM_SW_FINISH 0x20
#define DRM_I915_GEM_SET_TILING 0x21
#define DRM_I915_GEM_GET_TILING 0x22
#define DRM_I915_GEM_GET_APERTURE 0x23
#define DRM_IOCTL_I915_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)
#define DRM_IOCTL_I915_FLUSH DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH)
#define DRM_IOCTL_I915_FLIP DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLIP)
#define DRM_IOCTL_I915_BATCHBUFFER DRM_IOW( DRM_COMMAND_BASE + DRM_I915_BATCHBUFFER, drm_i915_batchbuffer_t)
#define DRM_IOCTL_I915_IRQ_EMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_IRQ_EMIT, drm_i915_irq_emit_t)
#define DRM_IOCTL_I915_IRQ_WAIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_IRQ_WAIT, drm_i915_irq_wait_t)
#define DRM_IOCTL_I915_GETPARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GETPARAM, drm_i915_getparam_t)
#define DRM_IOCTL_I915_SETPARAM DRM_IOW( DRM_COMMAND_BASE + DRM_I915_SETPARAM, drm_i915_setparam_t)
#define DRM_IOCTL_I915_ALLOC DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_ALLOC, drm_i915_mem_alloc_t)
#define DRM_IOCTL_I915_FREE DRM_IOW( DRM_COMMAND_BASE + DRM_I915_FREE, drm_i915_mem_free_t)
#define DRM_IOCTL_I915_INIT_HEAP DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT_HEAP, drm_i915_mem_init_heap_t)
#define DRM_IOCTL_I915_CMDBUFFER DRM_IOW( DRM_COMMAND_BASE + DRM_I915_CMDBUFFER, drm_i915_cmdbuffer_t)
#define DRM_IOCTL_I915_DESTROY_HEAP DRM_IOW( DRM_COMMAND_BASE + DRM_I915_DESTROY_HEAP, drm_i915_mem_destroy_heap_t)
#define DRM_IOCTL_I915_SET_VBLANK_PIPE DRM_IOW( DRM_COMMAND_BASE + DRM_I915_SET_VBLANK_PIPE, drm_i915_vblank_pipe_t)
#define DRM_IOCTL_I915_GET_VBLANK_PIPE DRM_IOR( DRM_COMMAND_BASE + DRM_I915_GET_VBLANK_PIPE, drm_i915_vblank_pipe_t)
#define DRM_IOCTL_I915_VBLANK_SWAP DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_VBLANK_SWAP, drm_i915_vblank_swap_t)
#define DRM_IOCTL_I915_GEM_PIN DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_PIN, struct drm_i915_gem_pin)
#define DRM_IOCTL_I915_GEM_UNPIN DRM_IOW(DRM_COMMAND_BASE + DRM_I915_GEM_UNPIN, struct drm_i915_gem_unpin)
#define DRM_IOCTL_I915_GEM_BUSY DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_BUSY, struct drm_i915_gem_busy)
#define DRM_IOCTL_I915_GEM_THROTTLE DRM_IO ( DRM_COMMAND_BASE + DRM_I915_GEM_THROTTLE)
#define DRM_IOCTL_I915_GEM_ENTERVT DRM_IO(DRM_COMMAND_BASE + DRM_I915_GEM_ENTERVT)
#define DRM_IOCTL_I915_GEM_LEAVEVT DRM_IO(DRM_COMMAND_BASE + DRM_I915_GEM_LEAVEVT)
#define DRM_IOCTL_I915_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_CREATE, struct drm_i915_gem_create)
#define DRM_IOCTL_I915_GEM_PREAD DRM_IOW (DRM_COMMAND_BASE + DRM_I915_GEM_PREAD, struct drm_i915_gem_pread)
#define DRM_IOCTL_I915_GEM_PWRITE DRM_IOW (DRM_COMMAND_BASE + DRM_I915_GEM_PWRITE, struct drm_i915_gem_pwrite)
#define DRM_IOCTL_I915_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_MMAP, struct drm_i915_gem_mmap)
#define DRM_IOCTL_I915_GEM_SET_DOMAIN DRM_IOW (DRM_COMMAND_BASE + DRM_I915_GEM_SET_DOMAIN, struct drm_i915_gem_set_domain)
#define DRM_IOCTL_I915_GEM_SW_FINISH DRM_IOW (DRM_COMMAND_BASE + DRM_I915_GEM_SW_FINISH, struct drm_i915_gem_sw_finish)
#define DRM_IOCTL_I915_GEM_SET_TILING DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_SET_TILING, struct drm_i915_gem_set_tiling)
#define DRM_IOCTL_I915_GEM_GET_TILING DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_GET_TILING, struct drm_i915_gem_get_tiling)
#define DRM_IOCTL_I915_GEM_GET_APERTURE DRM_IOR (DRM_COMMAND_BASE + DRM_I915_GEM_GET_APERTURE, struct drm_i915_gem_get_aperture)
/* Allow drivers to submit batchbuffers directly to hardware, relying
* on the security mechanisms provided by hardware.
*/
typedef struct _drm_i915_batchbuffer {
int start; /* agp offset */
int used; /* nr bytes in use */
int DR1; /* hw flags for GFX_OP_DRAWRECT_INFO */
int DR4; /* window origin for GFX_OP_DRAWRECT_INFO */
int num_cliprects; /* mulitpass with multiple cliprects? */
struct drm_clip_rect __user *cliprects; /* pointer to userspace cliprects */
} drm_i915_batchbuffer_t;
/* As above, but pass a pointer to userspace buffer which can be
* validated by the kernel prior to sending to hardware.
*/
typedef struct _drm_i915_cmdbuffer {
char __user *buf; /* pointer to userspace command buffer */
int sz; /* nr bytes in buf */
int DR1; /* hw flags for GFX_OP_DRAWRECT_INFO */
int DR4; /* window origin for GFX_OP_DRAWRECT_INFO */
int num_cliprects; /* mulitpass with multiple cliprects? */
struct drm_clip_rect __user *cliprects; /* pointer to userspace cliprects */
} drm_i915_cmdbuffer_t;
/* Userspace can request & wait on irq's:
*/
typedef struct drm_i915_irq_emit {
int __user *irq_seq;
} drm_i915_irq_emit_t;
typedef struct drm_i915_irq_wait {
int irq_seq;
} drm_i915_irq_wait_t;
/* Ioctl to query kernel params:
*/
#define I915_PARAM_IRQ_ACTIVE 1
#define I915_PARAM_ALLOW_BATCHBUFFER 2
#define I915_PARAM_LAST_DISPATCH 3
#define I915_PARAM_CHIPSET_ID 4
#define I915_PARAM_HAS_GEM 5
typedef struct drm_i915_getparam {
int param;
int __user *value;
} drm_i915_getparam_t;
/* Ioctl to set kernel params:
*/
#define I915_SETPARAM_USE_MI_BATCHBUFFER_START 1
#define I915_SETPARAM_TEX_LRU_LOG_GRANULARITY 2
#define I915_SETPARAM_ALLOW_BATCHBUFFER 3
typedef struct drm_i915_setparam {
int param;
int value;
} drm_i915_setparam_t;
/* A memory manager for regions of shared memory:
*/
#define I915_MEM_REGION_AGP 1
typedef struct drm_i915_mem_alloc {
int region;
int alignment;
int size;
int __user *region_offset; /* offset from start of fb or agp */
} drm_i915_mem_alloc_t;
typedef struct drm_i915_mem_free {
int region;
int region_offset;
} drm_i915_mem_free_t;
typedef struct drm_i915_mem_init_heap {
int region;
int size;
int start;
} drm_i915_mem_init_heap_t;
/* Allow memory manager to be torn down and re-initialized (eg on
* rotate):
*/
typedef struct drm_i915_mem_destroy_heap {
int region;
} drm_i915_mem_destroy_heap_t;
/* Allow X server to configure which pipes to monitor for vblank signals
*/
#define DRM_I915_VBLANK_PIPE_A 1
#define DRM_I915_VBLANK_PIPE_B 2
typedef struct drm_i915_vblank_pipe {
int pipe;
} drm_i915_vblank_pipe_t;
/* Schedule buffer swap at given vertical blank:
*/
typedef struct drm_i915_vblank_swap {
drm_drawable_t drawable;
enum drm_vblank_seq_type seqtype;
unsigned int sequence;
} drm_i915_vblank_swap_t;
typedef struct drm_i915_hws_addr {
uint64_t addr;
} drm_i915_hws_addr_t;
struct drm_i915_gem_init {
/**
* Beginning offset in the GTT to be managed by the DRM memory
* manager.
*/
uint64_t gtt_start;
/**
* Ending offset in the GTT to be managed by the DRM memory
* manager.
*/
uint64_t gtt_end;
};
struct drm_i915_gem_create {
/**
* Requested size for the object.
*
* The (page-aligned) allocated size for the object will be returned.
*/
uint64_t size;
/**
* Returned handle for the object.
*
* Object handles are nonzero.
*/
uint32_t handle;
uint32_t pad;
};
struct drm_i915_gem_pread {
/** Handle for the object being read. */
uint32_t handle;
uint32_t pad;
/** Offset into the object to read from */
uint64_t offset;
/** Length of data to read */
uint64_t size;
/**
* Pointer to write the data into.
*
* This is a fixed-size type for 32/64 compatibility.
*/
uint64_t data_ptr;
};
struct drm_i915_gem_pwrite {
/** Handle for the object being written to. */
uint32_t handle;
uint32_t pad;
/** Offset into the object to write to */
uint64_t offset;
/** Length of data to write */
uint64_t size;
/**
* Pointer to read the data from.
*
* This is a fixed-size type for 32/64 compatibility.
*/
uint64_t data_ptr;
};
struct drm_i915_gem_mmap {
/** Handle for the object being mapped. */
uint32_t handle;
uint32_t pad;
/** Offset in the object to map. */
uint64_t offset;
/**
* Length of data to map.
*
* The value will be page-aligned.
*/
uint64_t size;
/**
* Returned pointer the data was mapped at.
*
* This is a fixed-size type for 32/64 compatibility.
*/
uint64_t addr_ptr;
};
struct drm_i915_gem_set_domain {
/** Handle for the object */
uint32_t handle;
/** New read domains */
uint32_t read_domains;
/** New write domain */
uint32_t write_domain;
};
struct drm_i915_gem_sw_finish {
/** Handle for the object */
uint32_t handle;
};
struct drm_i915_gem_relocation_entry {
/**
* Handle of the buffer being pointed to by this relocation entry.
*
* It's appealing to make this be an index into the mm_validate_entry
* list to refer to the buffer, but this allows the driver to create
* a relocation list for state buffers and not re-write it per
* exec using the buffer.
*/
uint32_t target_handle;
/**
* Value to be added to the offset of the target buffer to make up
* the relocation entry.
*/
uint32_t delta;
/** Offset in the buffer the relocation entry will be written into */
uint64_t offset;
/**
* Offset value of the target buffer that the relocation entry was last
* written as.
*
* If the buffer has the same offset as last time, we can skip syncing
* and writing the relocation. This value is written back out by
* the execbuffer ioctl when the relocation is written.
*/
uint64_t presumed_offset;
/**
* Target memory domains read by this operation.
*/
uint32_t read_domains;
/**
* Target memory domains written by this operation.
*
* Note that only one domain may be written by the whole
* execbuffer operation, so that where there are conflicts,
* the application will get -EINVAL back.
*/
uint32_t write_domain;
};
/** @{
* Intel memory domains
*
* Most of these just align with the various caches in
* the system and are used to flush and invalidate as
* objects end up cached in different domains.
*/
/** CPU cache */
#define I915_GEM_DOMAIN_CPU 0x00000001
/** Render cache, used by 2D and 3D drawing */
#define I915_GEM_DOMAIN_RENDER 0x00000002
/** Sampler cache, used by texture engine */
#define I915_GEM_DOMAIN_SAMPLER 0x00000004
/** Command queue, used to load batch buffers */
#define I915_GEM_DOMAIN_COMMAND 0x00000008
/** Instruction cache, used by shader programs */
#define I915_GEM_DOMAIN_INSTRUCTION 0x00000010
/** Vertex address cache */
#define I915_GEM_DOMAIN_VERTEX 0x00000020
/** GTT domain - aperture and scanout */
#define I915_GEM_DOMAIN_GTT 0x00000040
/** @} */
struct drm_i915_gem_exec_object {
/**
* User's handle for a buffer to be bound into the GTT for this
* operation.
*/
uint32_t handle;
/** Number of relocations to be performed on this buffer */
uint32_t relocation_count;
/**
* Pointer to array of struct drm_i915_gem_relocation_entry containing
* the relocations to be performed in this buffer.
*/
uint64_t relocs_ptr;
/** Required alignment in graphics aperture */
uint64_t alignment;
/**
* Returned value of the updated offset of the object, for future
* presumed_offset writes.
*/
uint64_t offset;
};
struct drm_i915_gem_execbuffer {
/**
* List of buffers to be validated with their relocations to be
* performend on them.
*
* This is a pointer to an array of struct drm_i915_gem_validate_entry.
*
* These buffers must be listed in an order such that all relocations
* a buffer is performing refer to buffers that have already appeared
* in the validate list.
*/
uint64_t buffers_ptr;
uint32_t buffer_count;
/** Offset in the batchbuffer to start execution from. */
uint32_t batch_start_offset;
/** Bytes used in batchbuffer from batch_start_offset */
uint32_t batch_len;
uint32_t DR1;
uint32_t DR4;
uint32_t num_cliprects;
/** This is a struct drm_clip_rect *cliprects */
uint64_t cliprects_ptr;
};
struct drm_i915_gem_pin {
/** Handle of the buffer to be pinned. */
uint32_t handle;
uint32_t pad;
/** alignment required within the aperture */
uint64_t alignment;
/** Returned GTT offset of the buffer. */
uint64_t offset;
};
struct drm_i915_gem_unpin {
/** Handle of the buffer to be unpinned. */
uint32_t handle;
uint32_t pad;
};
struct drm_i915_gem_busy {
/** Handle of the buffer to check for busy */
uint32_t handle;
/** Return busy status (1 if busy, 0 if idle) */
uint32_t busy;
};
#define I915_TILING_NONE 0
#define I915_TILING_X 1
#define I915_TILING_Y 2
#define I915_BIT_6_SWIZZLE_NONE 0
#define I915_BIT_6_SWIZZLE_9 1
#define I915_BIT_6_SWIZZLE_9_10 2
#define I915_BIT_6_SWIZZLE_9_11 3
#define I915_BIT_6_SWIZZLE_9_10_11 4
/* Not seen by userland */
#define I915_BIT_6_SWIZZLE_UNKNOWN 5
struct drm_i915_gem_set_tiling {
/** Handle of the buffer to have its tiling state updated */
uint32_t handle;
/**
* Tiling mode for the object (I915_TILING_NONE, I915_TILING_X,
* I915_TILING_Y).
*
* This value is to be set on request, and will be updated by the
* kernel on successful return with the actual chosen tiling layout.
*
* The tiling mode may be demoted to I915_TILING_NONE when the system
* has bit 6 swizzling that can't be managed correctly by GEM.
*
* Buffer contents become undefined when changing tiling_mode.
*/
uint32_t tiling_mode;
/**
* Stride in bytes for the object when in I915_TILING_X or
* I915_TILING_Y.
*/
uint32_t stride;
/**
* Returned address bit 6 swizzling required for CPU access through
* mmap mapping.
*/
uint32_t swizzle_mode;
};
struct drm_i915_gem_get_tiling {
/** Handle of the buffer to get tiling state for. */
uint32_t handle;
/**
* Current tiling mode for the object (I915_TILING_NONE, I915_TILING_X,
* I915_TILING_Y).
*/
uint32_t tiling_mode;
/**
* Returned address bit 6 swizzling required for CPU access through
* mmap mapping.
*/
uint32_t swizzle_mode;
};
struct drm_i915_gem_get_aperture {
/** Total size of the aperture used by i915_gem_execbuffer, in bytes */
uint64_t aper_size;
/**
* Available space in the aperture used by i915_gem_execbuffer, in
* bytes
*/
uint64_t aper_available_size;
};
#endif /* _I915_DRM_H_ */
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