1 /* 2 * QEMU model of the ZynqMP generic DMA 3 * 4 * Copyright (c) 2014 Xilinx Inc. 5 * Copyright (c) 2018 FEIMTECH AB 6 * 7 * Written by Edgar E. Iglesias <edgar.iglesias@xilinx.com>, 8 * Francisco Iglesias <francisco.iglesias@feimtech.se> 9 * 10 * Permission is hereby granted, free of charge, to any person obtaining a copy 11 * of this software and associated documentation files (the "Software"), to deal 12 * in the Software without restriction, including without limitation the rights 13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 14 * copies of the Software, and to permit persons to whom the Software is 15 * furnished to do so, subject to the following conditions: 16 * 17 * The above copyright notice and this permission notice shall be included in 18 * all copies or substantial portions of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 26 * THE SOFTWARE. 27 */ 28 29 #ifndef XLNX_ZDMA_H 30 #define XLNX_ZDMA_H 31 32 #include "hw/sysbus.h" 33 #include "hw/register.h" 34 #include "sysemu/dma.h" 35 #include "qom/object.h" 36 37 #define ZDMA_R_MAX (0x204 / 4) 38 39 typedef enum { 40 DISABLED = 0, 41 ENABLED = 1, 42 PAUSED = 2, 43 } XlnxZDMAState; 44 45 typedef union { 46 struct { 47 uint64_t addr; 48 uint32_t size; 49 uint32_t attr; 50 }; 51 uint32_t words[4]; 52 } XlnxZDMADescr; 53 54 struct XlnxZDMA { 55 SysBusDevice parent_obj; 56 MemoryRegion iomem; 57 MemTxAttrs attr; 58 MemoryRegion *dma_mr; 59 AddressSpace *dma_as; 60 qemu_irq irq_zdma_ch_imr; 61 62 struct { 63 uint32_t bus_width; 64 } cfg; 65 66 XlnxZDMAState state; 67 bool error; 68 69 XlnxZDMADescr dsc_src; 70 XlnxZDMADescr dsc_dst; 71 72 uint32_t regs[ZDMA_R_MAX]; 73 RegisterInfo regs_info[ZDMA_R_MAX]; 74 75 /* We don't model the common bufs. Must be at least 16 bytes 76 to model write only mode. */ 77 uint8_t buf[2048]; 78 }; 79 typedef struct XlnxZDMA XlnxZDMA; 80 81 #define TYPE_XLNX_ZDMA "xlnx.zdma" 82 83 DECLARE_INSTANCE_CHECKER(XlnxZDMA, XLNX_ZDMA, 84 TYPE_XLNX_ZDMA) 85 86 #endif /* XLNX_ZDMA_H */ 87