PCIEM_CTL_MAX_READ_REQUEST
#define PCI_EXP_DEVCTL_READRQ PCIEM_CTL_MAX_READ_REQUEST
(burst & PCIEM_CTL_MAX_READ_REQUEST) >> 12;
r_order = ((devctl & PCIEM_CTL_MAX_READ_REQUEST) >> 12);
#define PCI_EXP_DEVCTL_READRQ PCIEM_CTL_MAX_READ_REQUEST
#define PCI_EXP_DEVCTL_READRQ PCIEM_CTL_MAX_READ_REQUEST
val &= PCIEM_CTL_MAX_READ_REQUEST;
val &= ~PCIEM_CTL_MAX_READ_REQUEST;
PCIEM_CTL_MAX_READ_REQUEST) >> 12));