TUSB9261DEMO: TUSB9261DEMO

Woody Boyd

Part Number: TUSB9261DEMO
Other Parts Discussed in Thread: TUSB9261

Tool/software:

Hello,

I have question about PxCI register.

In the code, PxCI has command completion status. For example:

status = ahci_wait_complete(PxCI(scsi_cmd.pCmdInput->bLUN), (0x1 .....

is there any status for new incoming command ?

So, I want to made like this :

if ahci_wait_complete is done then :

loop wait until 30 sec.

if no incoming command , then stop hdd rotation.

if there is any incoming command , then cancel the 30 sec loop

any suggestion ?

Thank you before

0 Nicholaus_Malone 8 months ago

Hi Woody,

It sounds like you are modifying the FW for the TUSB9261. The firmware is provided as-is without support.

Here is the definition for the ahci_wait_complete() function:

/*****************************************************************************

* Function: ahci_wait_complete

*************************************************************************//**

* This function waits up to a specified number of milliseconds

* for a register's masked value to equal the completion value.

* @param[in] addr register address.

* @param[in] cmplt_mask completion mask.

* @param[in] cmplt_val completion value.

* @param[in] timeout_ms timeout value in milliseconds.

* @retval STATUS_OK when successful.

* @retval STATUS_TIMEOUT when wait times out.

******************************************************************************

Woody Boyd said:
if ahci_wait_complete is done then :

This statement will always be TRUE; ahci_wait_complete will always be done and return either STATUS_OK or STATUS_TIMEOUT.

If you would like to increase the wait time, then increase the timeout_ms parameter of the function.

Does this help answer your question?

Regards,

Nicholaus

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