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/*
* Copyright(c) 2012,
* Texas Instruments, Inc. and Vivante Corporation.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Vivante Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef GCIOCTL_H
#define GCIOCTL_H
#include "gclist.h"
#include "gcerror.h"
#include "gcreg.h"
#include "cache-2dmanager.h"
#include <bverror.h>
/* IOCTL parameters. */
#define GCIOCTL_TYPE 0x5D
#define GCIOCTL_BASE 0x5D
/*******************************************************************************
* Capability query API entry.
*/
#define GCIOCTL_GETCAPS _IOWR(GCIOCTL_TYPE, GCIOCTL_BASE + 0x00, \
struct gcicaps)
/* GCIOCTL_CALLBACK_ALLOC / GCIOCTL_CALLBACK_FREE:
* To be able to use the callback mechanism each user space client must
* use the ALLOC/FREE APIs to manage a kernel side callback object
* represented by the handle member of struct gcicallback.
* ALLOC API allocates the object and returns the handle to it. */
struct gcicaps {
/* Error code. */
enum gcerror gcerror;
/* Capabilities and characteristics. */
unsigned int gcmodel;
unsigned int gcrevision;
unsigned int gcdate;
unsigned int gctime;
union gcfeatures gcfeatures;
union gcfeatures0 gcfeatures0;
union gcfeatures1 gcfeatures1;
union gcfeatures2 gcfeatures2;
union gcfeatures3 gcfeatures3;
};
/*******************************************************************************
* Commit API entry.
*/
#define GCIOCTL_COMMIT _IOWR(GCIOCTL_TYPE, GCIOCTL_BASE + 0x10, \
struct gcicommit)
/* GPU graphics pipe definition. */
enum gcpipe {
GCPIPE_UNKNOWN,
GCPIPE_2D,
GCPIPE_3D
};
/* Commit header; contains pointers to the head and the tail of a linked list
of command buffers to execute. */
struct gcicommit {
/* Return status code. */
enum gcerror gcerror;
/* Entry graphics pipe specifies the pipe the GPU is expected to be in
* for successfull execution of the specified command buffers in this
* call. Exit graphics pipe specifies the state of the GPU after the
* buffers are executed. */
enum gcpipe entrypipe;
enum gcpipe exitpipe;
/* List of command buffers to be executed (gcbuffer). */
struct list_head buffer;
/* Pointer to the callback function to be called when the GPU completes
* execution of all buffers specified in this call. This member can be
* NULL if no callback is desired. callbackparam specifies data to be
* passed to the callback. */
void (*callback) (void *callbackparam);
void *callbackparam;
/* Callback object handle allocated with GCIOCTL_CALLBACK_ALLOC API. */
unsigned long handle;
/* If asynchronous is set to true, the call returns immediately without
* waiting until all specified buffers have been executed. If set to
* false, the call does not return until execution is finished. */
bool asynchronous;
/* Scheduled unmappings (gcschedunmap). */
struct list_head unmap;
};
/* Command buffer header. */
#define GC_BUFFER_SIZE (32 * 1024)
struct gcbuffer {
/* Fixup list (gcfixup). */
struct list_head fixup;
/* Number of pixels to be rendered. */
unsigned int pixelcount;
/* Pointers to the head and tail of the command buffer list. */
unsigned int *head;
unsigned int *tail;
/* Number of bytes available in the buffer for allocation. */
unsigned int available;
/* Commmand buffer list (gcbuffer). */
struct list_head link;
};
/* Fixup entry. */
struct gcfixupentry {
/* Offset into the commmand buffer where fixup is to be performed. */
unsigned int dataoffset;
/* Offset to be added to the translated address. */
unsigned int surfoffset;
};
/* Address fixup array. */
#define GC_FIXUP_MAX 1024
struct gcfixup {
/* Fixup list (gcfixup). */
struct list_head link;
/* Fixup array. */
unsigned int count;
struct gcfixupentry fixup[GC_FIXUP_MAX];
};
/* Defines a link list of scheduled unmappings. */
struct gcschedunmap {
/* Map handle. */
unsigned long handle;
/* Previous/next unmapping info (gcschedunmap). */
struct list_head link;
};
/*******************************************************************************
* Map/unmap API entries.
*/
#define GCIOCTL_MAP _IOWR(GCIOCTL_TYPE, GCIOCTL_BASE + 0x20, \
struct gcimap)
#define GCIOCTL_UNMAP _IOWR(GCIOCTL_TYPE, GCIOCTL_BASE + 0x21, \
struct gcimap)
struct gcimap {
/* Return status code. */
enum gcerror gcerror;
/* Mapped handle of the buffer. */
unsigned long handle;
union {
/* Pointer to the buffer to be mapped;
* used when pagearray is not provided (set to NULL). */
void *logical;
/* Page offset of the buffer to be mapped;
* used when pagearray is provided. */
unsigned int offset;
} buf;
/* Size of a physical page, 0 for default. */
unsigned int pagesize;
/* Pointer to array of physical pages. */
unsigned long *pagearray;
/* Size of the buffer to be mappped. */
unsigned int size;
};
/*******************************************************************************
* Cache manipulation API entries.
*/
#define GCIOCTL_CACHE _IOW(GCIOCTL_TYPE, GCIOCTL_BASE + 0x30, \
struct gcicache)
struct gcicache {
/* Number of regions. */
int count;
/* The most regions that we deal with is 3. */
struct c2dmrgn rgn[3];
/* Direction of data. */
int dir;
};
/*******************************************************************************
* Callback API entry.
*/
#define GCIOCTL_CALLBACK_ALLOC _IOWR(GCIOCTL_TYPE, GCIOCTL_BASE + 0x40, \
struct gcicallback)
#define GCIOCTL_CALLBACK_FREE _IOWR(GCIOCTL_TYPE, GCIOCTL_BASE + 0x41, \
struct gcicallback)
#define GCIOCTL_CALLBACK_WAIT _IOWR(GCIOCTL_TYPE, GCIOCTL_BASE + 0x42, \
struct gcicallbackwait)
#define GCIOCTL_CALLBACK_ARM _IOWR(GCIOCTL_TYPE, GCIOCTL_BASE + 0x43, \
struct gcicallbackarm)
/* GCIOCTL_CALLBACK_ALLOC / GCIOCTL_CALLBACK_FREE:
* To be able to use the callback mechanism each user space client must
* use the ALLOC/FREE APIs to manage a kernel side callback object
* represented by the handle member of struct gcicallback.
* ALLOC API allocates the object and returns the handle to it. */
struct gcicallback {
/* Error code. */
enum gcerror gcerror;
/* Callback object handle. */
unsigned long handle;
};
/* GCIOCTL_CALLBACK_WAIT:
* Called by the user level client to block and wait until the hardware
* has executed a callback that was previosuly scheduled for the handle. */
struct gcicallbackwait {
/* Error code. */
enum gcerror gcerror;
/* Callback object handle. */
unsigned long handle;
/* Timeout in milliseconds. */
unsigned long timeoutms;
/* OUT: if the call succeeds, callback and callbackparam are
* initialized with the callback to call. */
void (*callback) (void *callbackparam);
void *callbackparam;
};
/* GCIOCTL_CALLBACK_ARM:
* Called by the client to arm a callback. This is similar to what
* COMMIT API does, but in a separate API. */
struct gcicallbackarm {
/* Return status code. */
enum gcerror gcerror;
/* Pointer to the callback function to be called when the GPU completes
* execution of all buffers specified in this call. This member can be
* NULL if no callback is desired. callbackparam specifies data to be
* passed to the callback. */
void (*callback) (void *callbackparam);
void *callbackparam;
/* Callback object handle allocated with GCIOCTL_CALLBACK_ALLOC API. */
unsigned long handle;
};
#endif
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