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qemu-patch-raspberry4/hw
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Peter Maydell 1a9b30646e hw/timer/cmsdk-apb-timer: run or stop timer on writes to RELOAD and VALUE 
If the CMSDK APB timer is set up with a zero RELOAD value
then it will count down to zero, fire once and then stay
at zero. From the point of view of the ptimer system, the
timer is disabled; but the enable bit in the CTRL register
is still set and if the guest subsequently writes to the
RELOAD or VALUE registers this should cause the timer to
start counting down again.

Add code to the write paths for RELOAD and VALUE so that
we correctly restart the timer in this situation.

Conversely, if the new RELOAD and VALUE are both zero,
we should stop the ptimer.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20180703171044.9503-5-peter.maydell@linaro.org
2018-07-09 14:51:34 +01:00
..
9pfs 9p: darwin: Explicitly cast comparisons of mode_t with -1 2018-06-29 12:32:10 +02:00
acpi nvdimm: make persistence option symbolic 2018-06-11 22:19:57 +03:00
adc Include qapi/error.h exactly where needed 2018-02-09 13:50:17 +01:00
alpha hw/alpha: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
arm hw/arm/smmu-common: Fix devfn computation in smmu_iommu_mr 2018-07-09 14:51:34 +01:00
audio audio/hda: fix CID 1393631 2018-07-03 11:45:33 +02:00
block hw/block: Use the IEC binary prefix definitions 2018-07-02 15:41:13 +02:00
bt hw/bt: Replace fprintf(stderr, "*\n" with error_report() 2018-01-22 09:51:00 +01:00
char Pull request 2018-06-30 13:59:53 +01:00
core ptimer: Add TRIGGER_ONLY_ON_DECREMENT policy option 2018-07-09 14:51:34 +01:00
cpu hw: use "qemu/osdep.h" as first #include in source files 2017-12-18 17:07:02 +03:00
cris hw/cris: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
display sm501: Set updated region dirty after 2D operation 2018-07-07 12:12:27 +10:00
dma hw/dma/omap_dma: Use qemu_log_mask(GUEST_ERROR) instead of fprintf 2018-06-26 17:50:40 +01:00
gpio hw/i2c: Use DeviceClass::realize instead of I2CSlaveClass::init 2018-06-01 15:14:31 +02:00
hppa hw/hppa: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
i2c ppc4xx_i2c: Rewrite to model hardware more closely 2018-07-03 09:56:52 +10:00
i386 pc, virtio: fixes 2018-07-03 09:49:20 +01:00
ide ahci: fix FIS I bit and PIO Setup FIS interrupt 2018-06-25 16:50:48 -04:00
input hw/input/tsc2005: Convert a fprintf() call to trace events 2018-06-29 15:04:18 +01:00
intc ioapic: remove useless lower bounds check 2018-07-06 18:39:19 +02:00
ipack hw/ipack: Use the IEC binary prefix definitions 2018-07-02 15:41:12 +02:00
ipmi object: fix OBJ_PROP_LINK_UNREF_ON_RELEASE ambivalence 2018-06-12 12:07:30 +02:00
isa hw/isa/smc37c669: Change the parallel I/O base to 378H 2018-06-16 19:46:54 -10:00
lm32 hw/lm32: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
m68k hw/m68k: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
mem pc-dimm: get_memory_region() will not fail after realize 2018-06-28 19:05:34 +02:00
microblaze hw/microblaze: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
mips * IEC units series (Philippe) 2018-07-02 19:07:19 +01:00
misc ppc patch queue 2018-07-03 2018-07-03 14:59:27 +01:00
moxie Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
net hw/net: Use the IEC binary prefix definitions 2018-07-02 15:41:16 +02:00
nios2 hw/nios2: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
nvram hw/ppc: Use the IEC binary prefix definitions 2018-07-02 15:41:16 +02:00
openrisc Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
pci virtio,vhost,pci,pc: features, cleanups 2018-03-20 15:48:34 +00:00
pci-bridge virtio,vhost,pci,pc: features, fixes and cleanups 2018-02-13 16:33:31 +00:00
pci-host hw/ppc: Use the IEC binary prefix definitions 2018-07-02 15:41:16 +02:00
pcmcia hw: Clean up includes 2016-01-29 15:07:25 +00:00
ppc sam460ex: Make sam460ex_load_device_tree() handle all errors internally 2018-07-09 14:38:45 +10:00
rdma hw/rdma: Use the IEC binary prefix definitions 2018-07-02 15:41:17 +02:00
riscv hw/riscv/sifive_u: Connect the Cadence GEM Ethernet device 2018-07-05 15:24:25 -07:00
s390x * IEC units series (Philippe) 2018-07-02 19:07:19 +01:00
scsi hw/scsi: Use the IEC binary prefix definitions 2018-07-02 15:41:12 +02:00
sd hw/sd: Use the IEC binary prefix definitions 2018-07-02 15:41:16 +02:00
sh4 hw/sh4: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
smbios hw/smbios: Use the IEC binary prefix definitions 2018-07-02 15:41:12 +02:00
sparc * IEC units series (Philippe) 2018-07-02 19:07:19 +01:00
sparc64 * IEC units series (Philippe) 2018-07-02 19:07:19 +01:00
ssi hw/ssi/omap_spi: Use qemu_log_mask(GUEST_ERROR) instead of fprintf 2018-06-26 17:50:40 +01:00
timer hw/timer/cmsdk-apb-timer: run or stop timer on writes to RELOAD and VALUE 2018-07-09 14:51:34 +01:00
tpm tpm: extend TPM TIS with state migration support 2018-05-24 12:07:04 -04:00
tricore hw/tricore: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
unicore32 hw/input/i8042: Extract declarations from i386/pc.h into input/i8042.h 2018-03-12 16:12:48 +01:00
usb usb: bugfixes for ehci and xhci. 2018-07-03 17:10:39 +01:00
vfio hw/vfio: Use the IEC binary prefix definitions 2018-07-02 15:41:16 +02:00
virtio virtio-rng: process pending requests on DRIVER_OK 2018-06-28 04:46:16 +03:00
watchdog hw/watchdog/wdt_i6300esb: Convert away from old_mmio 2018-06-15 15:23:34 +01:00
xen xen: Don't use memory_region_init_ram_nomigrate() in pci_assign_dev_load_option_rom() 2018-06-22 13:28:42 +01:00
xenpv hw/xen: Use the IEC binary prefix definitions 2018-07-02 15:41:13 +02:00
xtensa hw/xtensa: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
Makefile.objs hw: allow compiling out SCSI 2018-06-01 15:14:31 +02:00