/*******************************************************************************
**
** gckKERNEL_MapMemory
**
** Map video memory into the current process space.
**
** INPUT:
**
** gckKERNEL Kernel
** Pointer to an gckKERNEL object.
**
** gctPHYS_ADDR Physical
** Physical address of video memory to map.
**
** gctSIZE_T Bytes
** Number of bytes to map.
**
** OUTPUT:
**
** gctPOINTER * Logical
** Pointer to a variable that will hold the base address of the mapped
** memory region.
*/
gceSTATUS gckKERNEL_MapMemory(
IN gckKERNEL Kernel,
IN gctPHYS_ADDR Physical,
IN gctSIZE_T Bytes,
OUT gctPOINTER * Logical
)
{
// Call gckOS.
return gckOS_MapMemory(Kernel->os, Physical, Bytes, Logical);
}
/*******************************************************************************
**
** gckKERNEL_MapMemory
**
** Map video memory into the current process space.
**
** INPUT:
**
** gckKERNEL Kernel
** Pointer to an gckKERNEL object.
**
** gctPHYS_ADDR Physical
** Physical address of video memory to map.
**
** gctSIZE_T Bytes
** Number of bytes to map.
**
** OUTPUT:
**
** gctPOINTER * Logical
** Pointer to a variable that will hold the base address of the mapped
** memory region.
*/
gceSTATUS
gckKERNEL_MapMemory(
IN gckKERNEL Kernel,
IN gctPHYS_ADDR Physical,
IN gctSIZE_T Bytes,
OUT gctPOINTER * Logical
)
{
gckKERNEL kernel = Kernel;
gctPHYS_ADDR physical = gcmNAME_TO_PTR(Physical);
return gckOS_MapMemory(Kernel->os, physical, Bytes, Logical);
}
int drv_open(
struct inode* inode,
struct file* filp
)
{
gceSTATUS status;
gctBOOL attached = gcvFALSE;
gcsHAL_PRIVATE_DATA_PTR data = gcvNULL;
gctINT i;
gcmkHEADER_ARG("inode=0x%08X filp=0x%08X", inode, filp);
if (filp == gcvNULL)
{
gcmkTRACE_ZONE(
gcvLEVEL_ERROR, gcvZONE_DRIVER,
"%s(%d): filp is NULL\n",
__FUNCTION__, __LINE__
);
gcmkONERROR(gcvSTATUS_INVALID_ARGUMENT);
}
data = kmalloc(sizeof(gcsHAL_PRIVATE_DATA), GFP_KERNEL | __GFP_NOWARN);
if (data == gcvNULL)
{
gcmkTRACE_ZONE(
gcvLEVEL_ERROR, gcvZONE_DRIVER,
"%s(%d): private_data is NULL\n",
__FUNCTION__, __LINE__
);
gcmkONERROR(gcvSTATUS_OUT_OF_MEMORY);
}
data->device = galDevice;
data->mappedMemory = gcvNULL;
data->contiguousLogical = gcvNULL;
gcmkONERROR(gckOS_GetProcessID(&data->pidOpen));
/* Attached the process. */
for (i = 0; i < gcdMAX_GPU_COUNT; i++)
{
if (galDevice->kernels[i] != gcvNULL)
{
gcmkONERROR(gckKERNEL_AttachProcess(galDevice->kernels[i], gcvTRUE));
}
}
attached = gcvTRUE;
if (!galDevice->contiguousMapped)
{
if (galDevice->contiguousPhysical != gcvNULL)
{
gcmkONERROR(gckOS_MapMemory(
galDevice->os,
galDevice->contiguousPhysical,
galDevice->contiguousSize,
&data->contiguousLogical
));
}
}
filp->private_data = data;
/* Success. */
gcmkFOOTER_NO();
return 0;
OnError:
if (data != gcvNULL)
{
if (data->contiguousLogical != gcvNULL)
{
gcmkVERIFY_OK(gckOS_UnmapMemory(
galDevice->os,
galDevice->contiguousPhysical,
galDevice->contiguousSize,
data->contiguousLogical
));
}
kfree(data);
}
if (attached)
{
for (i = 0; i < gcdMAX_GPU_COUNT; i++)
{
if (galDevice->kernels[i] != gcvNULL)
{
gcmkVERIFY_OK(gckKERNEL_AttachProcess(galDevice->kernels[i], gcvFALSE));
}
}
}
gcmkFOOTER();
return -ENOTTY;
}