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/* Copyright (c) 2002,2007-2010, Code Aurora Forum. 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 Code Aurora 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, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT 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 __GSL_SHAREDMEM_H
#define __GSL_SHAREDMEM_H
//////////////////////////////////////////////////////////////////////////////
// defines
//////////////////////////////////////////////////////////////////////////////
#define GSL_APERTURE_MASK 0x000000FF
#define GSL_DEVICEID_MASK 0x0000FF00
#define GSL_EXTALLOC_MASK 0x000F0000
#define GSL_APERTURE_SHIFT 0
#define GSL_DEVICEID_SHIFT 8
#define GSL_EXTALLOC_SHIFT 16
#define GSL_APERTURE_GETGPUADDR(shmem, aperture_index) \
shmem.apertures[aperture_index].memarena->gpubaseaddr;
#define GSL_APERTURE_GETHOSTADDR(shmem, aperture_index) \
shmem.apertures[aperture_index].memarena->hostbaseaddr;
//////////////////////////////////////////////////////////////////////////////
// types
//////////////////////////////////////////////////////////////////////////////
// ---------------------
// memory aperture stats
// ---------------------
typedef struct _gsl_aperture_stats_t
{
gsl_apertureid_t id;
gsl_channelid_t channel;
gsl_memarena_stats_t memarena;
} gsl_aperture_stats_t;
// -------------------
// shared memory stats
// -------------------
typedef struct _gsl_sharedmem_stats_t
{
gsl_aperture_stats_t apertures[GSL_SHMEM_MAX_APERTURES];
} gsl_sharedmem_stats_t;
// ---------------
// memory aperture
// ---------------
typedef struct _gsl_aperture_t
{
gsl_apertureid_t id;
gsl_channelid_t channel;
int numbanks;
gsl_memarena_t *memarena;
} gsl_aperture_t;
// --------------------
// shared memory object
// --------------------
typedef struct _gsl_sharedmem_t
{
gsl_flags_t flags;
unsigned int priv;
int numapertures;
gsl_aperture_t apertures[GSL_SHMEM_MAX_APERTURES];
int aperturelookup[GSL_APERTURE_MAX][GSL_CHANNEL_MAX];
} gsl_sharedmem_t;
//////////////////////////////////////////////////////////////////////////////
// prototypes
//////////////////////////////////////////////////////////////////////////////
int kgsl_sharedmem_init(gsl_sharedmem_t *shmem);
int kgsl_sharedmem_close(gsl_sharedmem_t *shmem);
int kgsl_sharedmem_alloc0(gsl_deviceid_t device_id, gsl_flags_t flags, int sizebytes, gsl_memdesc_t *memdesc);
int kgsl_sharedmem_free0(gsl_memdesc_t *memdesc, unsigned int pid);
int kgsl_sharedmem_read0(const gsl_memdesc_t *memdesc, void *dst, unsigned int offsetbytes, unsigned int sizebytes, unsigned int touserspace);
int kgsl_sharedmem_write0(const gsl_memdesc_t *memdesc, unsigned int offsetbytes, void *src, unsigned int sizebytes, unsigned int fromuserspace);
int kgsl_sharedmem_set0(const gsl_memdesc_t *memdesc, unsigned int offsetbytes, unsigned int value, unsigned int sizebytes);
int kgsl_sharedmem_querystats(gsl_sharedmem_t *shmem, gsl_sharedmem_stats_t *stats);
unsigned int kgsl_sharedmem_convertaddr(unsigned int addr, int type);
#endif // __GSL_SHAREDMEM_H
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