11d52866fSPeter Maydell /* 21d52866fSPeter Maydell * ARM PrimeCell PL022 Synchronous Serial Port 31d52866fSPeter Maydell * 41d52866fSPeter Maydell * Copyright (c) 2007 CodeSourcery. 51d52866fSPeter Maydell * Written by Paul Brook 61d52866fSPeter Maydell * 71d52866fSPeter Maydell * This program is free software; you can redistribute it and/or modify 81d52866fSPeter Maydell * it under the terms of the GNU General Public License version 2 or 91d52866fSPeter Maydell * (at your option) any later version. 101d52866fSPeter Maydell */ 111d52866fSPeter Maydell 12*932a8d1fSPeter Maydell /* 13*932a8d1fSPeter Maydell * This is a model of the Arm PrimeCell PL022 synchronous serial port. 141d52866fSPeter Maydell * The PL022 TRM is: 15*932a8d1fSPeter Maydell * https://developer.arm.com/documentation/ddi0194/latest 161d52866fSPeter Maydell * 171d52866fSPeter Maydell * QEMU interface: 181d52866fSPeter Maydell * + sysbus IRQ: SSPINTR combined interrupt line 191d52866fSPeter Maydell * + sysbus MMIO region 0: MemoryRegion for the device's registers 201d52866fSPeter Maydell */ 211d52866fSPeter Maydell 221d52866fSPeter Maydell #ifndef HW_SSI_PL022_H 231d52866fSPeter Maydell #define HW_SSI_PL022_H 241d52866fSPeter Maydell 251d52866fSPeter Maydell #include "hw/sysbus.h" 26db1015e9SEduardo Habkost #include "qom/object.h" 271d52866fSPeter Maydell 281d52866fSPeter Maydell #define TYPE_PL022 "pl022" 298063396bSEduardo Habkost OBJECT_DECLARE_SIMPLE_TYPE(PL022State, PL022) 301d52866fSPeter Maydell 31db1015e9SEduardo Habkost struct PL022State { 321d52866fSPeter Maydell SysBusDevice parent_obj; 331d52866fSPeter Maydell 341d52866fSPeter Maydell MemoryRegion iomem; 351d52866fSPeter Maydell uint32_t cr0; 361d52866fSPeter Maydell uint32_t cr1; 371d52866fSPeter Maydell uint32_t bitmask; 381d52866fSPeter Maydell uint32_t sr; 391d52866fSPeter Maydell uint32_t cpsr; 401d52866fSPeter Maydell uint32_t is; 411d52866fSPeter Maydell uint32_t im; 421d52866fSPeter Maydell /* The FIFO head points to the next empty entry. */ 431d52866fSPeter Maydell int tx_fifo_head; 441d52866fSPeter Maydell int rx_fifo_head; 451d52866fSPeter Maydell int tx_fifo_len; 461d52866fSPeter Maydell int rx_fifo_len; 471d52866fSPeter Maydell uint16_t tx_fifo[8]; 481d52866fSPeter Maydell uint16_t rx_fifo[8]; 491d52866fSPeter Maydell qemu_irq irq; 501d52866fSPeter Maydell SSIBus *ssi; 51db1015e9SEduardo Habkost }; 521d52866fSPeter Maydell 531d52866fSPeter Maydell #endif 54