/** * igb_write_mbx_pf - Places a message in the mailbox * @hw: pointer to the HW structure * @msg: The message buffer * @size: Length of buffer * @vf_number: the VF index * * returns SUCCESS if it successfully copied message into the buffer **/ static s32 igb_write_mbx_pf(struct e1000_hw *hw, u32 *msg, u16 size, u16 vf_number) { s32 ret_val; u16 i; /* lock the mailbox to prevent pf/vf race condition */ ret_val = igb_obtain_mbx_lock_pf(hw, vf_number); if (ret_val) goto out_no_write; /* flush msg and acks as we are overwriting the message buffer */ igb_check_for_msg_pf(hw, vf_number); igb_check_for_ack_pf(hw, vf_number); /* copy the caller specified message to the mailbox memory buffer */ for (i = 0; i < size; i++) array_wr32(E1000_VMBMEM(vf_number), i, msg[i]); /* Interrupt VF to tell it a message has been sent and release buffer*/ wr32(E1000_P2VMAILBOX(vf_number), E1000_P2VMAILBOX_STS); /* update stats */ hw->mbx.stats.msgs_tx++; out_no_write: return ret_val; }
static s32 igb_write_mbx_pf(struct e1000_hw *hw, u32 *msg, u16 size, u16 vf_number) { s32 ret_val; u16 i; /* */ ret_val = igb_obtain_mbx_lock_pf(hw, vf_number); if (ret_val) goto out_no_write; /* */ igb_check_for_msg_pf(hw, vf_number); igb_check_for_ack_pf(hw, vf_number); /* */ for (i = 0; i < size; i++) array_wr32(E1000_VMBMEM(vf_number), i, msg[i]); /* */ wr32(E1000_P2VMAILBOX(vf_number), E1000_P2VMAILBOX_STS); /* */ hw->mbx.stats.msgs_tx++; out_no_write: return ret_val; }