| 1 | /* |
| 2 | * Microsemi SmartFusion2 Timer. |
| 3 | * |
| 4 | * Copyright (c) 2017 Subbaraya Sundeep <sundeep.lkml@gmail.com> |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #ifndef HW_MSS_TIMER_H |
| 26 | #define HW_MSS_TIMER_H |
| 27 | |
| 28 | #include "hw/core/sysbus.h" |
| 29 | #include "hw/core/ptimer.h" |
| 30 | #include "qom/object.h" |
| 31 | |
| 32 | #define TYPE_MSS_TIMER "mss-timer" |
| 33 | OBJECT_DECLARE_SIMPLE_TYPE(MSSTimerState, MSS_TIMER) |
| 34 | |
| 35 | /* |
| 36 | * There are two 32-bit down counting timers. |
| 37 | * Timers 1 and 2 can be concatenated into a single 64-bit Timer |
| 38 | * that operates either in Periodic mode or in One-shot mode. |
| 39 | * Writing 1 to the TIM64_MODE register bit 0 sets the Timers in 64-bit mode. |
| 40 | * In 64-bit mode, writing to the 32-bit registers has no effect. |
| 41 | * Similarly, in 32-bit mode, writing to the 64-bit mode registers |
| 42 | * has no effect. Only two 32-bit timers are supported currently. |
| 43 | */ |
| 44 | #define NUM_TIMERS 2 |
| 45 | |
| 46 | #define R_TIM1_MAX 6 |
| 47 | |
| 48 | struct Msf2Timer { |
| 49 | ptimer_state *ptimer; |
| 50 | |
| 51 | uint32_t regs[R_TIM1_MAX]; |
| 52 | qemu_irq irq; |
| 53 | }; |
| 54 | |
| 55 | struct MSSTimerState { |
| 56 | SysBusDevice parent_obj; |
| 57 | |
| 58 | MemoryRegion mmio; |
| 59 | uint32_t freq_hz; |
| 60 | struct Msf2Timer timers[NUM_TIMERS]; |
| 61 | }; |
| 62 | |
| 63 | #endif /* HW_MSS_TIMER_H */ |