arm: mptimer: Remove WDT distinction In QEMU emulation, there is no functional difference between the ARM mpcore private timers and watchdogs. Removed all the distinction between the two from arm_mptimer.c and converted it to be just the mptimer. a9mpcore and arm11mpcore just instantiate the same mptimer object twice to get both timer and WDT. If in the future we want to make the WDT functionally different then we can use either QOM hierarchy to derive WDT from from mptimer, or we can add a property "is-wdt" or some such. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/hw/a9mpcore.c b/hw/a9mpcore.c index 33b9e07..0032f53 100644 --- a/hw/a9mpcore.c +++ b/hw/a9mpcore.c
@@ -21,6 +21,7 @@ MemoryRegion scu_iomem; MemoryRegion container; DeviceState *mptimer; + DeviceState *wdt; DeviceState *gic; uint32_t num_irq; } A9MPPrivState; @@ -129,7 +130,7 @@ static int a9mp_priv_init(SysBusDevice *dev) { A9MPPrivState *s = FROM_SYSBUS(A9MPPrivState, dev); - SysBusDevice *busdev, *gicbusdev; + SysBusDevice *timerbusdev, *wdtbusdev, *gicbusdev; int i; s->gic = qdev_create(NULL, "arm_gic"); @@ -147,7 +148,12 @@ s->mptimer = qdev_create(NULL, "arm_mptimer"); qdev_prop_set_uint32(s->mptimer, "num-cpu", s->num_cpu); qdev_init_nofail(s->mptimer); - busdev = SYS_BUS_DEVICE(s->mptimer); + timerbusdev = SYS_BUS_DEVICE(s->mptimer); + + s->wdt = qdev_create(NULL, "arm_mptimer"); + qdev_prop_set_uint32(s->wdt, "num-cpu", s->num_cpu); + qdev_init_nofail(s->wdt); + wdtbusdev = SYS_BUS_DEVICE(s->wdt); /* Memory map (addresses are offsets from PERIPHBASE): * 0x0000-0x00ff -- Snoop Control Unit @@ -170,9 +176,9 @@ * memory region, not the "timer/watchdog for core X" ones 11MPcore has. */ memory_region_add_subregion(&s->container, 0x600, - sysbus_mmio_get_region(busdev, 0)); + sysbus_mmio_get_region(timerbusdev, 0)); memory_region_add_subregion(&s->container, 0x620, - sysbus_mmio_get_region(busdev, 1)); + sysbus_mmio_get_region(wdtbusdev, 0)); memory_region_add_subregion(&s->container, 0x1000, sysbus_mmio_get_region(gicbusdev, 0)); @@ -183,9 +189,9 @@ */ for (i = 0; i < s->num_cpu; i++) { int ppibase = (s->num_irq - 32) + i * 32; - sysbus_connect_irq(busdev, i * 2, + sysbus_connect_irq(timerbusdev, i, qdev_get_gpio_in(s->gic, ppibase + 29)); - sysbus_connect_irq(busdev, i * 2 + 1, + sysbus_connect_irq(wdtbusdev, i, qdev_get_gpio_in(s->gic, ppibase + 30)); } return 0;
diff --git a/hw/arm11mpcore.c b/hw/arm11mpcore.c index b900b35..ca49948 100644 --- a/hw/arm11mpcore.c +++ b/hw/arm11mpcore.c
@@ -21,6 +21,7 @@ MemoryRegion iomem; MemoryRegion container; DeviceState *mptimer; + DeviceState *wdtimer; DeviceState *gic; uint32_t num_irq; } ARM11MPCorePriveState; @@ -84,7 +85,8 @@ { int i; SysBusDevice *gicbusdev = SYS_BUS_DEVICE(s->gic); - SysBusDevice *busdev = SYS_BUS_DEVICE(s->mptimer); + SysBusDevice *timerbusdev = SYS_BUS_DEVICE(s->mptimer); + SysBusDevice *wdtbusdev = SYS_BUS_DEVICE(s->wdtimer); memory_region_init(&s->container, "mpcode-priv-container", 0x2000); memory_region_init_io(&s->iomem, &mpcore_scu_ops, s, "mpcore-scu", 0x100); memory_region_add_subregion(&s->container, 0, &s->iomem); @@ -99,11 +101,13 @@ /* Add the regions for timer and watchdog for "current CPU" and * for each specific CPU. */ - for (i = 0; i < (s->num_cpu + 1) * 2; i++) { + for (i = 0; i < (s->num_cpu + 1); i++) { /* Timers at 0x600, 0x700, ...; watchdogs at 0x620, 0x720, ... */ - hwaddr offset = 0x600 + (i >> 1) * 0x100 + (i & 1) * 0x20; + hwaddr offset = 0x600 + i * 0x100; memory_region_add_subregion(&s->container, offset, - sysbus_mmio_get_region(busdev, i)); + sysbus_mmio_get_region(timerbusdev, i)); + memory_region_add_subregion(&s->container, offset + 0x20, + sysbus_mmio_get_region(wdtbusdev, i)); } memory_region_add_subregion(&s->container, 0x1000, sysbus_mmio_get_region(gicbusdev, 0)); @@ -112,9 +116,9 @@ */ for (i = 0; i < s->num_cpu; i++) { int ppibase = (s->num_irq - 32) + i * 32; - sysbus_connect_irq(busdev, i * 2, + sysbus_connect_irq(timerbusdev, i, qdev_get_gpio_in(s->gic, ppibase + 29)); - sysbus_connect_irq(busdev, i * 2 + 1, + sysbus_connect_irq(wdtbusdev, i, qdev_get_gpio_in(s->gic, ppibase + 30)); } } @@ -139,6 +143,11 @@ s->mptimer = qdev_create(NULL, "arm_mptimer"); qdev_prop_set_uint32(s->mptimer, "num-cpu", s->num_cpu); qdev_init_nofail(s->mptimer); + + s->wdtimer = qdev_create(NULL, "arm_mptimer"); + qdev_prop_set_uint32(s->wdtimer, "num-cpu", s->num_cpu); + qdev_init_nofail(s->wdtimer); + mpcore_priv_map_setup(s); sysbus_init_mmio(dev, &s->container); return 0;
diff --git a/hw/arm_mptimer.c b/hw/arm_mptimer.c index de0ef36..7b08aa3 100644 --- a/hw/arm_mptimer.c +++ b/hw/arm_mptimer.c
@@ -43,8 +43,8 @@ typedef struct { SysBusDevice busdev; uint32_t num_cpu; - TimerBlock timerblock[MAX_CPUS * 2]; - MemoryRegion iomem[2]; + TimerBlock timerblock[MAX_CPUS]; + MemoryRegion iomem; } ARMMPTimerState; static inline int get_current_cpu(ARMMPTimerState *s) @@ -166,7 +166,7 @@ { ARMMPTimerState *s = (ARMMPTimerState *)opaque; int id = get_current_cpu(s); - return timerblock_read(&s->timerblock[id * 2], addr, size); + return timerblock_read(&s->timerblock[id], addr, size); } static void arm_thistimer_write(void *opaque, hwaddr addr, @@ -174,23 +174,7 @@ { ARMMPTimerState *s = (ARMMPTimerState *)opaque; int id = get_current_cpu(s); - timerblock_write(&s->timerblock[id * 2], addr, value, size); -} - -static uint64_t arm_thiswdog_read(void *opaque, hwaddr addr, - unsigned size) -{ - ARMMPTimerState *s = (ARMMPTimerState *)opaque; - int id = get_current_cpu(s); - return timerblock_read(&s->timerblock[id * 2 + 1], addr, size); -} - -static void arm_thiswdog_write(void *opaque, hwaddr addr, - uint64_t value, unsigned size) -{ - ARMMPTimerState *s = (ARMMPTimerState *)opaque; - int id = get_current_cpu(s); - timerblock_write(&s->timerblock[id * 2 + 1], addr, value, size); + timerblock_write(&s->timerblock[id], addr, value, size); } static const MemoryRegionOps arm_thistimer_ops = { @@ -203,16 +187,6 @@ .endianness = DEVICE_NATIVE_ENDIAN, }; -static const MemoryRegionOps arm_thiswdog_ops = { - .read = arm_thiswdog_read, - .write = arm_thiswdog_write, - .valid = { - .min_access_size = 4, - .max_access_size = 4, - }, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - static const MemoryRegionOps timerblock_ops = { .read = timerblock_read, .write = timerblock_write, @@ -240,9 +214,6 @@ ARMMPTimerState *s = FROM_SYSBUS(ARMMPTimerState, SYS_BUS_DEVICE(dev)); int i; - /* We reset every timer in the array, not just the ones we're using, - * because vmsave will look at every array element. - */ for (i = 0; i < ARRAY_SIZE(s->timerblock); i++) { timerblock_reset(&s->timerblock[i]); } @@ -255,29 +226,20 @@ if (s->num_cpu < 1 || s->num_cpu > MAX_CPUS) { hw_error("%s: num-cpu must be between 1 and %d\n", __func__, MAX_CPUS); } - /* We implement one timer and one watchdog block per CPU, and - * expose multiple MMIO regions: + /* We implement one timer block per CPU, and expose multiple MMIO regions: * * region 0 is "timer for this core" - * * region 1 is "watchdog for this core" - * * region 2 is "timer for core 0" - * * region 3 is "watchdog for core 0" - * * region 4 is "timer for core 1" - * * region 5 is "watchdog for core 1" + * * region 1 is "timer for core 0" + * * region 2 is "timer for core 1" * and so on. * The outgoing interrupt lines are * * timer for core 0 - * * watchdog for core 0 * * timer for core 1 - * * watchdog for core 1 * and so on. */ - memory_region_init_io(&s->iomem[0], &arm_thistimer_ops, s, + memory_region_init_io(&s->iomem, &arm_thistimer_ops, s, "arm_mptimer_timer", 0x20); - sysbus_init_mmio(dev, &s->iomem[0]); - memory_region_init_io(&s->iomem[1], &arm_thiswdog_ops, s, - "arm_mptimer_wdog", 0x20); - sysbus_init_mmio(dev, &s->iomem[1]); - for (i = 0; i < (s->num_cpu * 2); i++) { + sysbus_init_mmio(dev, &s->iomem); + for (i = 0; i < s->num_cpu; i++) { TimerBlock *tb = &s->timerblock[i]; tb->timer = qemu_new_timer_ns(vm_clock, timerblock_tick, tb); sysbus_init_irq(dev, &tb->irq); @@ -305,11 +267,11 @@ static const VMStateDescription vmstate_arm_mptimer = { .name = "arm_mptimer", - .version_id = 1, - .minimum_version_id = 1, + .version_id = 2, + .minimum_version_id = 2, .fields = (VMStateField[]) { - VMSTATE_STRUCT_ARRAY(timerblock, ARMMPTimerState, (MAX_CPUS * 2), - 1, vmstate_timerblock, TimerBlock), + VMSTATE_STRUCT_VARRAY_UINT32(timerblock, ARMMPTimerState, num_cpu, + 2, vmstate_timerblock, TimerBlock), VMSTATE_END_OF_LIST() } };