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John Snow 9da82227ca ide: fix DMA register transitions 
ATA8-APT defines the state transitions for both a host controller and
for the hardware device during the lifecycle of a DMA transfer, in
section 9.7 "DMA command protocol."

One of the interesting tidbits here is that when a device transitions
from DDMA0 ("Prepare state") to DDMA1 ("Data_Transfer State"), it can
choose to set either BSY or DRQ to signal this transition, but not both.

as ide_sector_dma_start is the last point in our preparation process
before we begin the real data transfer process (for either AHCI or BMDMA),
this is the correct transition point for DDMA0 to DDMA1.

I have chosen !BSY && DRQ for QEMU to make the transition from DDMA0 the
most obvious.

Reported-by: Benjamin David Lunt <fys@fysnet.net>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Tested-by: Stefan Weil <sw@weilnetz.de>
Message-id: 1470175541-19344-1-git-send-email-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2016-09-29 14:46:15 -04:00
..
9pfs 9pfs: fix potential segfault during walk 2016-09-19 11:39:48 +02:00
acpi hw/i386: AMD IOMMU IVRS table 2016-09-24 01:02:01 +03:00
alpha trace-events: fix first line comment in trace-events 2016-08-12 10:36:01 +01:00
arm sysbus: Remove ignored return value of FindSysbusDeviceFunc 2016-09-27 17:03:34 -03:00
audio pcspk: adding vmstate for save/restore 2016-09-15 15:10:06 +02:00
block qdisk - hw/block/xen_disk: grant copy implementation 2016-09-27 18:18:55 -07:00
bt hw/bt/hci: spelling fix: endianness 2016-09-13 18:12:34 +03:00
char hw: replace most use of qemu_chr_fe_write with qemu_chr_fe_write_all 2016-09-13 19:09:42 +02:00
core sysbus: Remove ignored return value of FindSysbusDeviceFunc 2016-09-27 17:03:34 -03:00
cpu cpu: Abstract CPU core type 2016-06-17 16:33:48 +10:00
cris cris: Fix broken header guard in hw/cris/boot.h 2016-07-12 16:20:46 +02:00
display vmstateify ssd0323 display 2016-09-22 18:13:08 +01:00
dma hw/ptimer: Introduce timer policy feature 2016-09-22 18:13:06 +01:00
gpio hw/gpio: QOM'ify zaurus.c 2016-06-14 15:59:13 +01:00
i2c i2c: fix migration regression introduced by broadcast support 2016-08-03 18:44:56 +02:00
i386 cpus: pass CPUState to run_on_cpu helpers 2016-09-27 11:57:29 +02:00
ide ide: fix DMA register transitions 2016-09-29 14:46:15 -04:00
input ps2: do not generate invalid key codes for unknown keys 2016-09-28 14:03:42 +02:00
intc x86: ioapic: boost default version to 0x20 2016-09-27 11:57:28 +02:00
ipack ipack: Update e-mail address 2016-05-18 15:04:27 +03:00
ipmi vl: Switch qemu_uuid to QemuUUID 2016-09-23 11:42:52 +08:00
isa portio: keep references on portio 2016-09-08 18:05:21 +04:00
lm32 Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
m68k hw/ptimer: Introduce timer policy feature 2016-09-22 18:13:06 +01:00
mem nvdimm: fix memory leak in error code path 2016-07-20 19:30:26 +03:00
microblaze Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
mips error: Strip trailing '\n' from error string arguments (again) 2016-08-08 09:00:44 +02:00
misc imx: Use 'const char', not 'char const' 2016-09-22 18:13:09 +01:00
moxie hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
net imx_fec: fix error in qemu_send_packet argument 2016-09-27 17:54:22 +08:00
nvram vl: Switch qemu_uuid to QemuUUID 2016-09-23 11:42:52 +08:00
openrisc hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
pci trace-events: fix first line comment in trace-events 2016-08-12 10:36:01 +01:00
pci-bridge hw/pci-bridge: Convert pxb initialization functions to Error 2016-07-29 00:07:09 +03:00
pci-host apb: convert init to realize 2016-07-29 00:07:09 +03:00
pcmcia
ppc * thread-safe tb_flush (Fred, Alex, Sergey, me, Richard, Emilio,... :-) 2016-09-28 23:02:56 +01:00
s390x Couple of s390x patches: 2016-09-19 12:41:28 +01:00
scsi spapr_vscsi: convert to trace framework instead of DPRINTF 2016-09-23 10:29:40 +10:00
sd vmstateify ssi-sd 2016-09-22 18:13:08 +01:00
sh4 sh4: fix broken link to documentation 2016-09-15 15:32:22 +03:00
smbios vl: Switch qemu_uuid to QemuUUID 2016-09-23 11:42:52 +08:00
sparc trace-events: fix first line comment in trace-events 2016-08-12 10:36:01 +01:00
sparc64 util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
ssi imx: Use 'const char', not 'char const' 2016-09-22 18:13:09 +01:00
timer imx: Use 'const char', not 'char const' 2016-09-22 18:13:09 +01:00
tpm Clean up header guards that don't match their file name 2016-07-12 16:19:16 +02:00
tricore tricore: remove useless cast 2016-09-15 15:32:22 +03:00
unicore32 hw: explicitly include qemu-common.h and cpu.h 2016-03-22 22:20:17 +01:00
usb usb-mtp: add support for files larger than 4g (gsoc) 2016-09-15 14:56:36 +01:00
vfio memory: introduce IOMMUNotifier and its caps 2016-09-27 08:59:16 +02:00
virtio virtio: handle virtqueue_get_head() errors 2016-09-23 19:03:56 +03:00
watchdog nmi: remove x86 specific nmi handling 2016-05-23 16:53:46 +02:00
xen Xen: fix converity warning of xen_pt_config_init() 2016-08-12 16:38:18 -07:00
xenpv vl: Switch qemu_uuid to QemuUUID 2016-09-23 11:42:52 +08:00
xtensa target-xtensa: xtfpga: fix FLASH interface width 2016-07-14 13:59:44 +03:00
Makefile.objs