/*******************************************************************************
**
** gckKERNEL_Dispatch
**
** Dispatch a command received from the user HAL layer.
**
** INPUT:
**
** gckKERNEL Kernel
** Pointer to an gckKERNEL object.
**
** gctBOOL FromUser
** whether the call is from the user space.
**
** gcsHAL_INTERFACE * Interface
** Pointer to a gcsHAL_INTERFACE structure that defines the command to
** be dispatched.
**
** OUTPUT:
**
** gcsHAL_INTERFACE * Interface
** Pointer to a gcsHAL_INTERFACE structure that receives any data to be
** returned.
*/
gceSTATUS
gckKERNEL_Dispatch(
IN gckKERNEL Kernel,
IN gctBOOL FromUser,
IN OUT gcsHAL_INTERFACE * Interface
)
{
gceSTATUS status;
gctUINT32 bitsPerPixel;
gctSIZE_T bytes;
gcuVIDMEM_NODE_PTR node;
gctBOOL locked = gcvFALSE;
gctPHYS_ADDR physical;
gctUINT32 address;
gcmkHEADER_ARG("Kernel=0x%x FromUser=%d Interface=0x%x",
Kernel, FromUser, Interface);
/* Verify the arguments. */
gcmkVERIFY_OBJECT(Kernel, gcvOBJ_KERNEL);
gcmkVERIFY_ARGUMENT(Interface != gcvNULL);
gcmkTRACE_ZONE(gcvLEVEL_INFO, gcvZONE_KERNEL,
"Dispatching command %d", Interface->command);
/* Dispatch on command. */
switch (Interface->command)
{
case gcvHAL_GET_BASE_ADDRESS:
/* Get base address. */
gcmkONERROR(
gckOS_GetBaseAddress(Kernel->os,
&Interface->u.GetBaseAddress.baseAddress));
break;
case gcvHAL_QUERY_VIDEO_MEMORY:
/* Query video memory size. */
gcmkONERROR(gckKERNEL_QueryVideoMemory(Kernel, Interface));
break;
case gcvHAL_QUERY_CHIP_IDENTITY:
/* Query chip identity. */
gcmkONERROR(
gckHARDWARE_QueryChipIdentity(
Kernel->hardware,
&Interface->u.QueryChipIdentity.chipModel,
&Interface->u.QueryChipIdentity.chipRevision,
&Interface->u.QueryChipIdentity.chipFeatures,
&Interface->u.QueryChipIdentity.chipMinorFeatures,
&Interface->u.QueryChipIdentity.chipMinorFeatures1));
/* Query chip specifications. */
gcmkONERROR(
gckHARDWARE_QueryChipSpecs(
Kernel->hardware,
&Interface->u.QueryChipIdentity.streamCount,
&Interface->u.QueryChipIdentity.registerMax,
&Interface->u.QueryChipIdentity.threadCount,
&Interface->u.QueryChipIdentity.shaderCoreCount,
&Interface->u.QueryChipIdentity.vertexCacheSize,
&Interface->u.QueryChipIdentity.vertexOutputBufferSize));
break;
case gcvHAL_MAP_MEMORY:
physical = Interface->u.MapMemory.physical;
/* Map memory. */
gcmkONERROR(
gckKERNEL_MapMemory(Kernel,
physical,
Interface->u.MapMemory.bytes,
&Interface->u.MapMemory.logical));
break;
case gcvHAL_UNMAP_MEMORY:
physical = Interface->u.UnmapMemory.physical;
/* Unmap memory. */
gcmkONERROR(
gckKERNEL_UnmapMemory(Kernel,
physical,
Interface->u.UnmapMemory.bytes,
Interface->u.UnmapMemory.logical));
break;
case gcvHAL_ALLOCATE_NON_PAGED_MEMORY:
/* Allocate non-paged memory. */
#ifdef __QNXNTO__
if (FromUser)
{
gcmkONERROR(
gckOS_AllocateNonPagedMemoryShmPool(
Kernel->os,
FromUser,
Interface->pid,
Interface->handle,
&Interface->u.AllocateNonPagedMemory.bytes,
&Interface->u.AllocateNonPagedMemory.physical,
&Interface->u.AllocateNonPagedMemory.logical));
break;
}
#endif
gcmkONERROR(
gckOS_AllocateNonPagedMemory(
Kernel->os,
FromUser,
&Interface->u.AllocateNonPagedMemory.bytes,
&Interface->u.AllocateNonPagedMemory.physical,
&Interface->u.AllocateNonPagedMemory.logical));
break;
case gcvHAL_FREE_NON_PAGED_MEMORY:
physical = Interface->u.FreeNonPagedMemory.physical;
/* Free non-paged memory. */
gcmkONERROR(
gckOS_FreeNonPagedMemory(Kernel->os,
Interface->u.FreeNonPagedMemory.bytes,
physical,
Interface->u.FreeNonPagedMemory.logical));
break;
case gcvHAL_ALLOCATE_CONTIGUOUS_MEMORY:
/* Allocate contiguous memory. */
#ifdef __QNXNTO__
if (FromUser)
{
gcmkONERROR(
gckOS_AllocateNonPagedMemoryShmPool(
Kernel->os,
FromUser,
Interface->pid,
Interface->handle,
&Interface->u.AllocateNonPagedMemory.bytes,
&Interface->u.AllocateNonPagedMemory.physical,
&Interface->u.AllocateNonPagedMemory.logical));
break;
}
#endif
gcmkONERROR(
gckOS_AllocateContiguous(
Kernel->os,
FromUser,
&Interface->u.AllocateContiguousMemory.bytes,
&Interface->u.AllocateContiguousMemory.physical,
&Interface->u.AllocateContiguousMemory.logical));
break;
case gcvHAL_FREE_CONTIGUOUS_MEMORY:
physical = Interface->u.FreeContiguousMemory.physical;
/* Free contiguous memory. */
gcmkONERROR(
gckOS_FreeContiguous(Kernel->os,
physical,
Interface->u.FreeContiguousMemory.logical,
Interface->u.FreeContiguousMemory.bytes));
break;
case gcvHAL_ALLOCATE_VIDEO_MEMORY:
/* Align width and height to tiles. */
gcmkONERROR(
gckHARDWARE_AlignToTile(Kernel->hardware,
Interface->u.AllocateVideoMemory.type,
&Interface->u.AllocateVideoMemory.width,
&Interface->u.AllocateVideoMemory.height,
gcvNULL));
/* Convert format into bytes per pixel and bytes per tile. */
gcmkONERROR(
gckHARDWARE_ConvertFormat(Kernel->hardware,
Interface->u.AllocateVideoMemory.format,
&bitsPerPixel,
gcvNULL));
/* Compute number of bytes for the allocation. */
bytes = Interface->u.AllocateVideoMemory.width * bitsPerPixel
* Interface->u.AllocateVideoMemory.height
* Interface->u.AllocateVideoMemory.depth / 8;
/* Allocate memory. */
#ifdef __QNXNTO__
gcmkONERROR(
_AllocateMemory(Kernel,
&Interface->u.AllocateVideoMemory.pool,
bytes,
64,
Interface->u.AllocateVideoMemory.type,
Interface->handle,
&Interface->u.AllocateVideoMemory.node));
#else
gcmkONERROR(
_AllocateMemory(Kernel,
&Interface->u.AllocateVideoMemory.pool,
bytes,
64,
Interface->u.AllocateVideoMemory.type,
&Interface->u.AllocateVideoMemory.node));
#endif
break;
case gcvHAL_ALLOCATE_LINEAR_VIDEO_MEMORY:
/* Allocate memory. */
#ifdef __QNXNTO__
gcmkONERROR(
_AllocateMemory(Kernel,
&Interface->u.AllocateLinearVideoMemory.pool,
Interface->u.AllocateLinearVideoMemory.bytes,
Interface->u.AllocateLinearVideoMemory.alignment,
Interface->u.AllocateLinearVideoMemory.type,
Interface->handle,
&Interface->u.AllocateLinearVideoMemory.node));
/* Set the current user pid in the node,
* which is used while locking memory. */
gcmkVERIFY_OK(gckVIDMEM_SetPID(
Interface->u.AllocateLinearVideoMemory.node,
Interface->pid));
#else
gcmkONERROR(
_AllocateMemory(Kernel,
&Interface->u.AllocateLinearVideoMemory.pool,
Interface->u.AllocateLinearVideoMemory.bytes,
Interface->u.AllocateLinearVideoMemory.alignment,
Interface->u.AllocateLinearVideoMemory.type,
&Interface->u.AllocateLinearVideoMemory.node));
#endif
break;
case gcvHAL_FREE_VIDEO_MEMORY:
#ifdef __QNXNTO__
node = Interface->u.FreeVideoMemory.node;
if (node->VidMem.memory->object.type == gcvOBJ_VIDMEM
&& node->VidMem.logical != gcvNULL)
{
gcmkONERROR(
gckKERNEL_UnmapVideoMemory(Kernel,
node->VidMem.logical,
Interface->pid,
node->VidMem.bytes));
node->VidMem.logical = gcvNULL;
}
#endif
/* Free video memory. */
gcmkONERROR(
gckVIDMEM_Free(Interface->u.FreeVideoMemory.node));
break;
case gcvHAL_LOCK_VIDEO_MEMORY:
/* Lock video memory. */
gcmkONERROR(
gckVIDMEM_Lock(Interface->u.LockVideoMemory.node,
&Interface->u.LockVideoMemory.address));
locked = gcvTRUE;
node = Interface->u.LockVideoMemory.node;
if (node->VidMem.memory->object.type == gcvOBJ_VIDMEM)
{
/* Map video memory address into user space. */
#ifdef __QNXNTO__
if (node->VidMem.logical == gcvNULL)
{
gcmkONERROR(
gckKERNEL_MapVideoMemory(Kernel,
FromUser,
Interface->u.LockVideoMemory.address,
Interface->pid,
node->VidMem.bytes,
&node->VidMem.logical));
}
Interface->u.LockVideoMemory.memory = node->VidMem.logical;
#else
gcmkONERROR(
gckKERNEL_MapVideoMemory(Kernel,
FromUser,
Interface->u.LockVideoMemory.address,
&Interface->u.LockVideoMemory.memory));
#endif
#ifdef __QNXNTO__
/* Add more information to node, which is used while unmapping. */
gcmkVERIFY_OK(gckVIDMEM_SetPID(
Interface->u.LockVideoMemory.node,
Interface->pid));
#endif
}
else
{
/* Copy logical memory for virtual memory. */
Interface->u.LockVideoMemory.memory = node->Virtual.logical;
/* Success. */
status = gcvSTATUS_OK;
}
#if gcdSECURE_USER
/* Return logical address as physical address. */
Interface->u.LockVideoMemory.address =
gcmPTR2INT(Interface->u.LockVideoMemory.memory);
#endif
break;
case gcvHAL_UNLOCK_VIDEO_MEMORY:
/* Unlock video memory. */
node = Interface->u.UnlockVideoMemory.node;
/* Unlock video memory. */
gcmkONERROR(
gckVIDMEM_Unlock(node,
Interface->u.UnlockVideoMemory.type,
&Interface->u.UnlockVideoMemory.asynchroneous));
break;
case gcvHAL_EVENT_COMMIT:
/* Commit an event queue. */
gcmkONERROR(
gckEVENT_Commit(Kernel->event,
Interface->u.Event.queue));
break;
case gcvHAL_COMMIT:
/* Commit a command and context buffer. */
gcmkONERROR(
gckCOMMAND_Commit(Kernel->command,
Interface->u.Commit.commandBuffer,
Interface->u.Commit.contextBuffer,
Interface->u.Commit.process));
break;
case gcvHAL_STALL:
/* Stall the command queue. */
gcmkONERROR(gckCOMMAND_Stall(Kernel->command));
break;
case gcvHAL_MAP_USER_MEMORY:
/* Map user memory to DMA. */
gcmkONERROR(
gckOS_MapUserMemory(Kernel->os,
Interface->u.MapUserMemory.memory,
Interface->u.MapUserMemory.size,
&Interface->u.MapUserMemory.info,
&Interface->u.MapUserMemory.address));
break;
case gcvHAL_UNMAP_USER_MEMORY:
address = Interface->u.MapUserMemory.address;
/* Unmap user memory. */
gcmkONERROR(
gckOS_UnmapUserMemory(Kernel->os,
Interface->u.UnmapUserMemory.memory,
Interface->u.UnmapUserMemory.size,
Interface->u.UnmapUserMemory.info,
address));
break;
#if !USE_NEW_LINUX_SIGNAL
case gcvHAL_USER_SIGNAL:
gcmkTRACE_ZONE(gcvLEVEL_INFO, gcvZONE_KERNEL,
"Dispatching gcvHAL_USER_SIGNAL %d", Interface->u.UserSignal.command);
/* Dispatch depends on the user signal subcommands. */
switch(Interface->u.UserSignal.command)
{
case gcvUSER_SIGNAL_CREATE:
/* Create a signal used in the user space. */
gcmkONERROR(
gckOS_CreateUserSignal(Kernel->os,
Interface->u.UserSignal.manualReset,
Interface->u.UserSignal.signalType,
&Interface->u.UserSignal.id));
break;
case gcvUSER_SIGNAL_DESTROY:
/* Destroy the signal. */
gcmkONERROR(
gckOS_DestroyUserSignal(Kernel->os,
Interface->u.UserSignal.id));
break;
case gcvUSER_SIGNAL_SIGNAL:
/* Signal the signal. */
gcmkONERROR(
gckOS_SignalUserSignal(Kernel->os,
Interface->u.UserSignal.id,
Interface->u.UserSignal.state));
break;
case gcvUSER_SIGNAL_WAIT:
/* Wait on the signal. */
status = gckOS_WaitUserSignal(Kernel->os,
Interface->u.UserSignal.id,
Interface->u.UserSignal.wait);
break;
default:
/* Invalid user signal command. */
gcmkONERROR(gcvSTATUS_INVALID_ARGUMENT);
}
break;
#endif
case gcvHAL_SET_POWER_MANAGEMENT_STATE:
/* Set the power management state. */
gcmkONERROR(
gckHARDWARE_SetPowerManagementState(
Kernel->hardware,
Interface->u.SetPowerManagement.state));
break;
case gcvHAL_QUERY_POWER_MANAGEMENT_STATE:
/* Chip is not idle. */
Interface->u.QueryPowerManagement.isIdle = gcvFALSE;
/* Query the power management state. */
gcmkONERROR(gckHARDWARE_QueryPowerManagementState(
Kernel->hardware,
&Interface->u.QueryPowerManagement.state));
/* Query the idle state. */
gcmkONERROR(
gckHARDWARE_QueryIdle(Kernel->hardware,
&Interface->u.QueryPowerManagement.isIdle));
break;
case gcvHAL_READ_REGISTER:
#if gcdREGISTER_ACCESS_FROM_USER
/* Read a register. */
gcmkONERROR(
gckOS_ReadRegister(Kernel->os,
Interface->u.ReadRegisterData.address,
&Interface->u.ReadRegisterData.data));
#else
/* No access from user land to read registers. */
Interface->u.ReadRegisterData.data = 0;
status = gcvSTATUS_NOT_SUPPORTED;
#endif
break;
case gcvHAL_WRITE_REGISTER:
#if gcdREGISTER_ACCESS_FROM_USER
/* Write a register. */
gcmkONERROR(
gckOS_WriteRegister(Kernel->os,
Interface->u.WriteRegisterData.address,
Interface->u.WriteRegisterData.data));
#else
/* No access from user land to write registers. */
status = gcvSTATUS_NOT_SUPPORTED;
#endif
break;
case gcvHAL_READ_ALL_PROFILE_REGISTERS:
#if VIVANTE_PROFILER
/* Read all 3D profile registers. */
gcmkONERROR(
gckHARDWARE_QueryProfileRegisters(
Kernel->hardware,
&Interface->u.RegisterProfileData.counters));
#else
status = gcvSTATUS_OK;
#endif
break;
case gcvHAL_PROFILE_REGISTERS_2D:
#if VIVANTE_PROFILER
/* Read all 2D profile registers. */
gcmkONERROR(
gckHARDWARE_ProfileEngine2D(
Kernel->hardware,
Interface->u.RegisterProfileData2D.hwProfile2D));
#else
status = gcvSTATUS_OK;
#endif
break;
case gcvHAL_GET_PROFILE_SETTING:
#if VIVANTE_PROFILER
/* Get profile setting */
Interface->u.GetProfileSetting.enable = Kernel->profileEnable;
gcmkVERIFY_OK(
gckOS_MemCopy(Interface->u.GetProfileSetting.fileName,
Kernel->profileFileName,
gcdMAX_PROFILE_FILE_NAME));
#endif
status = gcvSTATUS_OK;
break;
case gcvHAL_SET_PROFILE_SETTING:
#if VIVANTE_PROFILER
/* Set profile setting */
Kernel->profileEnable = Interface->u.SetProfileSetting.enable;
gcmkVERIFY_OK(
gckOS_MemCopy(Kernel->profileFileName,
Interface->u.SetProfileSetting.fileName,
gcdMAX_PROFILE_FILE_NAME));
#endif
status = gcvSTATUS_OK;
break;
case gcvHAL_QUERY_KERNEL_SETTINGS:
/* Get kernel settings. */
gcmkONERROR(
gckKERNEL_QuerySettings(Kernel,
&Interface->u.QueryKernelSettings.settings));
break;
case gcvHAL_RESET:
/* Reset the hardware. */
gcmkONERROR(
gckHARDWARE_Reset(Kernel->hardware));
break;
case gcvHAL_DEBUG:
/* Set debug level and zones. */
if (Interface->u.Debug.set)
{
gckOS_SetDebugLevel(Interface->u.Debug.level);
gckOS_SetDebugZones(Interface->u.Debug.zones,
Interface->u.Debug.enable);
}
if (Interface->u.Debug.message[0] != '\0')
{
/* Print a message to the debugger. */
gcmkPRINT(Interface->u.Debug.message);
}
status = gcvSTATUS_OK;
break;
case gcvHAL_CACHE:
if (Interface->u.Cache.invalidate)
{
/* Flush and invalidate the cache. */
status = gckOS_CacheInvalidate(Kernel->os,
Interface->u.Cache.process,
Interface->u.Cache.logical,
Interface->u.Cache.bytes);
}
else
{
/* Flush the cache. */
status = gckOS_CacheFlush(Kernel->os,
Interface->u.Cache.process,
Interface->u.Cache.logical,
Interface->u.Cache.bytes);
}
break;
default:
/* Invalid command. */
gcmkONERROR(gcvSTATUS_INVALID_ARGUMENT);
}
OnError:
/* Save status. */
Interface->status = status;
if (gcmIS_ERROR(status))
{
if (locked)
{
/* Roll back the lock. */
gcmkVERIFY_OK(
gckVIDMEM_Unlock(Interface->u.LockVideoMemory.node,
gcvSURF_TYPE_UNKNOWN,
gcvNULL));
}
}
/* Return the status. */
gcmkFOOTER();
return status;
}
/* echo xx > /proc/driver/gc set ... */
static ssize_t gc_proc_write(struct file *file,
const char *buff, size_t len, loff_t *off)
{
char messages[256];
if(len > 256)
len = 256;
if(copy_from_user(messages, buff, len))
return -EFAULT;
printk("\n");
if(strncmp(messages, "printPID", 8) == 0)
{
galDevice->printPID = galDevice->printPID ? gcvFALSE : gcvTRUE;
printk("==>Change printPID to %s\n", galDevice->printPID ? "gcvTRUE" : "gcvFALSE");
}
else if(strncmp(messages, "profile", 7) == 0)
{
gctUINT32 idleTime, timeSlice;
gctUINT32 start,end;
timeSlice = 10000;
start = gckOS_GetTicks();
gckOS_IdleProfile(galDevice->os, &timeSlice, &idleTime);
end = gckOS_GetTicks();
printk("idle:total [%d, %d]\n", idleTime, timeSlice);
printk("profile cost %d\n", end - start);
}
else if(strncmp(messages, "hang", 4) == 0)
{
galDevice->kernel->hardware->hang = galDevice->kernel->hardware->hang ? gcvFALSE : gcvTRUE;
}
else if(strncmp(messages, "reset", 5) == 0)
{
galDevice->reset = galDevice->reset ? gcvFALSE : gcvTRUE;
}
#ifdef CONFIG_PXA_DVFM
else if(strncmp(messages, "d2debug", 7) == 0)
{
galDevice->needD2DebugInfo = galDevice->needD2DebugInfo ? gcvFALSE : gcvTRUE;
}
else if(strncmp(messages, "D1", 2) == 0)
{
galDevice->enableD1 = galDevice->enableD1 ? gcvFALSE : gcvTRUE;
gckOS_SetConstraint(galDevice->os, gcvTRUE, gcvTRUE);
}
else if(strncmp(messages, "D2", 2) == 0)
{
galDevice->enableD2 = galDevice->enableD2 ? gcvFALSE : gcvTRUE;
gckOS_SetConstraint(galDevice->os, gcvTRUE, gcvTRUE);
}
else if(strncmp(messages, "D0", 2) == 0)
{
galDevice->enableD0CS= galDevice->enableD0CS ? gcvFALSE : gcvTRUE;
gckOS_SetConstraint(galDevice->os, gcvTRUE, gcvTRUE);
}
else if(strncmp(messages, "CG", 2) == 0)
{
galDevice->enableCG= galDevice->enableCG ? gcvFALSE : gcvTRUE;
gckOS_SetConstraint(galDevice->os, gcvTRUE, gcvTRUE);
}
else if(strncmp(messages, "needreset", 9) == 0)
{
galDevice->needResetAfterD2 = galDevice->needResetAfterD2 ? gcvFALSE : gcvTRUE;
}
#endif
else if(strncmp(messages, "su", 2) == 0)
{
gceSTATUS status;
if(galDevice->kernel->hardware->chipPowerState != gcvPOWER_OFF)
{
status = gckHARDWARE_SetPowerManagementState(galDevice->kernel->hardware, gcvPOWER_OFF);
if (gcmIS_ERROR(status))
{
return -1;
}
gckOS_SuspendInterrupt(galDevice->os);
gckOS_ClockOff();
}
}
else if(strncmp(messages, "re", 2) == 0)
{
gceSTATUS status;
if(galDevice->kernel->hardware->chipPowerState != gcvPOWER_ON)
{
gckOS_ClockOn(0);
gckOS_ResumeInterrupt(galDevice->os);
status = gckHARDWARE_SetPowerManagementState(galDevice->kernel->hardware, gcvPOWER_ON);
if (gcmIS_ERROR(status))
{
return -1;
}
}
}
else if(strncmp(messages, "stress", 6) == 0)
{
int i;
/* struct vmalloc_info vmi; */
/* {get_vmalloc_info(&vmi);printk("%s,%d,VmallocUsed: %8lu kB\n",__func__,__LINE__,vmi.used >> 10); } */
#ifdef _DEBUG
gckOS_SetDebugLevel(gcvLEVEL_VERBOSE);
gckOS_SetDebugZone(1023);
#endif
for(i=0;i<20000;i++)
{
gceSTATUS status;
static int count = 0;
printk("count:%d\n",count++);
printk("!!!\t");
if(galDevice->kernel->hardware->chipPowerState != gcvPOWER_OFF)
{
status = gckHARDWARE_SetPowerManagementState(galDevice->kernel->hardware, gcvPOWER_OFF);
if (gcmIS_ERROR(status))
{
return -1;
}
gckOS_SuspendInterrupt(galDevice->os);
gckOS_ClockOff();
}
printk("@@@\t");
if(galDevice->kernel->hardware->chipPowerState != gcvPOWER_ON)
{
gckOS_ClockOn(0);
gckOS_ResumeInterrupt(galDevice->os);
status = gckHARDWARE_SetPowerManagementState(galDevice->kernel->hardware, gcvPOWER_ON);
if (gcmIS_ERROR(status))
{
return -1;
}
}
printk("###\n");
}
}
else if(strncmp(messages, "debug", 5) == 0)
{
#ifdef _DEBUG
static int count = 0;
if(count%2 == 0)
{
gckOS_SetDebugLevel(gcvLEVEL_VERBOSE);
gckOS_SetDebugZone(1023);
}
else
{
gckOS_SetDebugLevel(gcvLEVEL_NONE);
gckOS_SetDebugZone(0);
}
count++;
#endif
}
else if(strncmp(messages, "16", 2) == 0)
{
printk("frequency change to 1/16\n");
/* frequency change to 1/16 */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x210));
/* Loading the frequency scaler. */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x010));
}
else if(strncmp(messages, "32", 2) == 0)
{
printk("frequency change to 1/32\n");
/* frequency change to 1/32*/
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x208));
/* Loading the frequency scaler. */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x008));
}
else if(strncmp(messages, "64", 2) == 0)
{
printk("frequency change to 1/64\n");
/* frequency change to 1/64 */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x204));
/* Loading the frequency scaler. */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x004));
}
else if('1' == messages[0])
{
printk("frequency change to full speed\n");
/* frequency change to full speed */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x300));
/* Loading the frequency scaler. */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x100));
}
else if('2' == messages[0])
{
printk("frequency change to 1/2\n");
/* frequency change to 1/2 */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x280));
/* Loading the frequency scaler. */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x080));
}
else if('4' == messages[0])
{
printk("frequency change to 1/4\n");
/* frequency change to 1/4 */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x240));
/* Loading the frequency scaler. */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x040));
}
else if('8' == messages[0])
{
printk("frequency change to 1/8\n");
/* frequency change to 1/8 */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x220));
/* Loading the frequency scaler. */
gcmkVERIFY_OK(gckOS_WriteRegister(galDevice->os,0x00000,0x020));
}
else
{
printk("unknown echo\n");
}
return len;
}
