diff options
Diffstat (limited to 'include/hw/intc')
| -rw-r--r-- | include/hw/intc/nios2_vic.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/include/hw/intc/nios2_vic.h b/include/hw/intc/nios2_vic.h new file mode 100644 index 0000000000..af1517a967 --- /dev/null +++ b/include/hw/intc/nios2_vic.h @@ -0,0 +1,64 @@ +/* + * Vectored Interrupt Controller for nios2 processor + * + * Copyright (c) 2022 Neuroblade + * + * Interface: + * QOM property "cpu": link to the Nios2 CPU (must be set) + * Unnamed GPIO inputs 0..NIOS2_VIC_MAX_IRQ-1: input IRQ lines + * IRQ should be connected to nios2 IRQ0. + * + * Reference: "Embedded Peripherals IP User Guide + * for Intel® Quartus® Prime Design Suite: 21.4" + * Chapter 38 "Vectored Interrupt Controller Core" + * See: https://www.intel.com/content/www/us/en/docs/programmable/683130/21-4/vectored-interrupt-controller-core.html + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef HW_INTC_NIOS2_VIC +#define HW_INTC_NIOS2_VIC + +#define TYPE_NIOS2_VIC "nios2-vic" +OBJECT_DECLARE_SIMPLE_TYPE(Nios2VIC, NIOS2_VIC) + +#define NIOS2_VIC_MAX_IRQ 32 + +struct Nios2VIC { + /*< private >*/ + SysBusDevice parent_obj; + + /*< public >*/ + qemu_irq output_int; + + /* properties */ + CPUState *cpu; + MemoryRegion csr; + + uint32_t int_config[NIOS2_VIC_MAX_IRQ]; + uint32_t vic_config; + uint32_t int_raw_status; + uint32_t int_enable; + uint32_t sw_int; + uint32_t vic_status; + uint32_t vec_tbl_base; + uint32_t vec_tbl_addr; +}; + +#endif /* HW_INTC_NIOS2_VIC */ |