1*1d52866fSPeter Maydell /* 2*1d52866fSPeter Maydell * ARM PrimeCell PL022 Synchronous Serial Port 3*1d52866fSPeter Maydell * 4*1d52866fSPeter Maydell * Copyright (c) 2007 CodeSourcery. 5*1d52866fSPeter Maydell * Written by Paul Brook 6*1d52866fSPeter Maydell * 7*1d52866fSPeter Maydell * This program is free software; you can redistribute it and/or modify 8*1d52866fSPeter Maydell * it under the terms of the GNU General Public License version 2 or 9*1d52866fSPeter Maydell * (at your option) any later version. 10*1d52866fSPeter Maydell */ 11*1d52866fSPeter Maydell 12*1d52866fSPeter Maydell /* This is a model of the Arm PrimeCell PL022 synchronous serial port. 13*1d52866fSPeter Maydell * The PL022 TRM is: 14*1d52866fSPeter Maydell * http://infocenter.arm.com/help/topic/com.arm.doc.ddi0194h/DDI0194H_ssp_pl022_trm.pdf 15*1d52866fSPeter Maydell * 16*1d52866fSPeter Maydell * QEMU interface: 17*1d52866fSPeter Maydell * + sysbus IRQ: SSPINTR combined interrupt line 18*1d52866fSPeter Maydell * + sysbus MMIO region 0: MemoryRegion for the device's registers 19*1d52866fSPeter Maydell */ 20*1d52866fSPeter Maydell 21*1d52866fSPeter Maydell #ifndef HW_SSI_PL022_H 22*1d52866fSPeter Maydell #define HW_SSI_PL022_H 23*1d52866fSPeter Maydell 24*1d52866fSPeter Maydell #include "hw/sysbus.h" 25*1d52866fSPeter Maydell 26*1d52866fSPeter Maydell #define TYPE_PL022 "pl022" 27*1d52866fSPeter Maydell #define PL022(obj) OBJECT_CHECK(PL022State, (obj), TYPE_PL022) 28*1d52866fSPeter Maydell 29*1d52866fSPeter Maydell typedef struct PL022State { 30*1d52866fSPeter Maydell SysBusDevice parent_obj; 31*1d52866fSPeter Maydell 32*1d52866fSPeter Maydell MemoryRegion iomem; 33*1d52866fSPeter Maydell uint32_t cr0; 34*1d52866fSPeter Maydell uint32_t cr1; 35*1d52866fSPeter Maydell uint32_t bitmask; 36*1d52866fSPeter Maydell uint32_t sr; 37*1d52866fSPeter Maydell uint32_t cpsr; 38*1d52866fSPeter Maydell uint32_t is; 39*1d52866fSPeter Maydell uint32_t im; 40*1d52866fSPeter Maydell /* The FIFO head points to the next empty entry. */ 41*1d52866fSPeter Maydell int tx_fifo_head; 42*1d52866fSPeter Maydell int rx_fifo_head; 43*1d52866fSPeter Maydell int tx_fifo_len; 44*1d52866fSPeter Maydell int rx_fifo_len; 45*1d52866fSPeter Maydell uint16_t tx_fifo[8]; 46*1d52866fSPeter Maydell uint16_t rx_fifo[8]; 47*1d52866fSPeter Maydell qemu_irq irq; 48*1d52866fSPeter Maydell SSIBus *ssi; 49*1d52866fSPeter Maydell } PL022State; 50*1d52866fSPeter Maydell 51*1d52866fSPeter Maydell #endif 52