CA_R0ATT
writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));