Ejemplo n.º 1
0
/**
 *  e1000_check_for_bit_vf - Determine if a status bit was set
 *  @hw: pointer to the HW structure
 *  @mask: bitmask for bits to be tested and cleared
 *
 *  This function is used to check for the read to clear bits within
 *  the V2P mailbox.
 **/
static s32 e1000_check_for_bit_vf(struct e1000_hw *hw, u32 mask)
{
	u32 v2p_mailbox = e1000_read_v2p_mailbox(hw);
	s32 ret_val = -E1000_ERR_MBX;

	if (v2p_mailbox & mask)
		ret_val = E1000_SUCCESS;

	hw->dev_spec.vf.v2p_mailbox &= ~mask;

	return ret_val;
}
Ejemplo n.º 2
0
/**
 *  e1000_obtain_mbx_lock_vf - obtain mailbox lock
 *  @hw: pointer to the HW structure
 *
 *  return SUCCESS if we obtained the mailbox lock
 **/
static s32 e1000_obtain_mbx_lock_vf(struct e1000_hw *hw)
{
	s32 ret_val = -E1000_ERR_MBX;

	/* Take ownership of the buffer */
	ew32(V2PMAILBOX(0), E1000_V2PMAILBOX_VFU);

	/* reserve mailbox for vf use */
	if (e1000_read_v2p_mailbox(hw) & E1000_V2PMAILBOX_VFU)
		ret_val = E1000_SUCCESS;

	return ret_val;
}
Ejemplo n.º 3
0
Archivo: mbx.c Proyecto: 020gzh/linux
/**
 *  e1000_obtain_mbx_lock_vf - obtain mailbox lock
 *  @hw: pointer to the HW structure
 *
 *  return SUCCESS if we obtained the mailbox lock
 **/
static s32 e1000_obtain_mbx_lock_vf(struct e1000_hw *hw)
{
	s32 ret_val = -E1000_ERR_MBX;
	int count = 10;

	do {
		/* Take ownership of the buffer */
		ew32(V2PMAILBOX(0), E1000_V2PMAILBOX_VFU);

		/* reserve mailbox for VF use */
		if (e1000_read_v2p_mailbox(hw) & E1000_V2PMAILBOX_VFU) {
			ret_val = 0;
			break;
		}
		udelay(1000);
	} while (count-- > 0);

	return ret_val;
}
Ejemplo n.º 4
0
/**
 *  e1000_obtain_mbx_lock_vf - obtain mailbox lock
 *  @hw: pointer to the HW structure
 *
 *  return SUCCESS if we obtained the mailbox lock
 **/
static s32 e1000_obtain_mbx_lock_vf(struct e1000_hw *hw)
{
	s32 ret_val = -E1000_ERR_MBX;
	int count = 10;

	DEBUGFUNC("e1000_obtain_mbx_lock_vf");

	do {
		/* Take ownership of the buffer */
		E1000_WRITE_REG(hw, E1000_V2PMAILBOX(0), E1000_V2PMAILBOX_VFU);

		/* reserve mailbox for vf use */
		if (e1000_read_v2p_mailbox(hw) & E1000_V2PMAILBOX_VFU) {
			ret_val = E1000_SUCCESS;
			break;
		}
		usec_delay(1000);
	} while (count-- > 0);

	return ret_val;
}