1 /* 2 * Header file for the Xilinx Versal's OSPI controller 3 * 4 * Copyright (C) 2021 Xilinx Inc 5 * Written by Francisco Iglesias <francisco.iglesias@xilinx.com> 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25 26 /* 27 * This is a model of Xilinx Versal's Octal SPI flash memory controller 28 * documented in Versal's Technical Reference manual [1] and the Versal ACAP 29 * Register reference [2]. 30 * 31 * References: 32 * 33 * [1] Versal ACAP Technical Reference Manual, 34 * https://www.xilinx.com/support/documentation/architecture-manuals/am011-versal-acap-trm.pdf 35 * 36 * [2] Versal ACAP Register Reference, 37 * https://www.xilinx.com/html_docs/registers/am012/am012-versal-register-reference.html#mod___ospi.html 38 * 39 * 40 * QEMU interface: 41 * + sysbus MMIO region 0: MemoryRegion for the device's registers 42 * + sysbus MMIO region 1: MemoryRegion for flash memory linear address space 43 * (data transfer). 44 * + sysbus IRQ 0: Device interrupt. 45 * + Named GPIO input "ospi-mux-sel": 0: enables indirect access mode 46 * and 1: enables direct access mode. 47 * + Property "dac-with-indac": Allow both direct accesses and indirect 48 * accesses simultaneously. 49 * + Property "indac-write-disabled": Disable indirect access writes. 50 */ 51 52 #ifndef XLNX_VERSAL_OSPI_H 53 #define XLNX_VERSAL_OSPI_H 54 55 #include "hw/register.h" 56 #include "hw/ssi/ssi.h" 57 #include "qemu/fifo8.h" 58 #include "hw/dma/xlnx_csu_dma.h" 59 60 #define TYPE_XILINX_VERSAL_OSPI "xlnx.versal-ospi" 61 62 OBJECT_DECLARE_SIMPLE_TYPE(XlnxVersalOspi, XILINX_VERSAL_OSPI) 63 64 #define XILINX_VERSAL_OSPI_R_MAX (0xfc / 4 + 1) 65 66 /* 67 * Indirect operations 68 */ 69 typedef struct IndOp { 70 uint32_t flash_addr; 71 uint32_t num_bytes; 72 uint32_t done_bytes; 73 bool completed; 74 } IndOp; 75 76 struct XlnxVersalOspi { 77 SysBusDevice parent_obj; 78 79 MemoryRegion iomem; 80 MemoryRegion iomem_dac; 81 82 uint8_t num_cs; 83 qemu_irq *cs_lines; 84 85 SSIBus *spi; 86 87 Fifo8 rx_fifo; 88 Fifo8 tx_fifo; 89 90 Fifo8 rx_sram; 91 Fifo8 tx_sram; 92 93 qemu_irq irq; 94 95 XlnxCSUDMA *dma_src; 96 bool ind_write_disabled; 97 bool dac_with_indac; 98 bool dac_enable; 99 bool src_dma_inprog; 100 101 IndOp rd_ind_op[2]; 102 IndOp wr_ind_op[2]; 103 104 uint32_t regs[XILINX_VERSAL_OSPI_R_MAX]; 105 RegisterInfo regs_info[XILINX_VERSAL_OSPI_R_MAX]; 106 107 /* Maximum inferred membank size is 512 bytes */ 108 uint8_t stig_membank[512]; 109 }; 110 111 #endif /* XLNX_VERSAL_OSPI_H */ 112