| Message ID | 1515506513-31961-3-git-send-email-peter.maydell@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | Reset SD cards attached to legacy-API controllers | expand |
Hi Peter, On 01/09/2018 11:01 AM, Peter Maydell wrote: > Since pl181 is still using the legacy SD card API, the SD pl181 -> milkymist-memcard ;) > card created by sd_init() is not plugged into any bus. This > means that the controller has to reset it manually. > > Failing to do this mostly didn't affect the guest since the > guest typically does a programmed SD card reset as part of > its SD controller driver initialization, but meant that > migration failed because it's only in sd_reset() that we > set up the wpgrps_size field. > > Cc: qemu-stable@nongnu.org > Signed-off-by: Peter Maydell <peter.maydell@linaro.org> > --- > hw/sd/milkymist-memcard.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/hw/sd/milkymist-memcard.c b/hw/sd/milkymist-memcard.c > index 4008c81..341da88 100644 > --- a/hw/sd/milkymist-memcard.c > +++ b/hw/sd/milkymist-memcard.c > @@ -248,6 +248,10 @@ static void milkymist_memcard_reset(DeviceState *d) > for (i = 0; i < R_MAX; i++) { > s->regs[i] = 0; > } > + /* Since we're still using the legacy SD API the card is not plugged > + * into any bus, and we must reset it manually. > + */ > + device_reset(DEVICE(s->card)); > } > > static int milkymist_memcard_init(SysBusDevice *dev) >
diff --git a/hw/sd/milkymist-memcard.c b/hw/sd/milkymist-memcard.c index 4008c81..341da88 100644 --- a/hw/sd/milkymist-memcard.c +++ b/hw/sd/milkymist-memcard.c @@ -248,6 +248,10 @@ static void milkymist_memcard_reset(DeviceState *d) for (i = 0; i < R_MAX; i++) { s->regs[i] = 0; } + /* Since we're still using the legacy SD API the card is not plugged + * into any bus, and we must reset it manually. + */ + device_reset(DEVICE(s->card)); } static int milkymist_memcard_init(SysBusDevice *dev)
Since pl181 is still using the legacy SD card API, the SD card created by sd_init() is not plugged into any bus. This means that the controller has to reset it manually. Failing to do this mostly didn't affect the guest since the guest typically does a programmed SD card reset as part of its SD controller driver initialization, but meant that migration failed because it's only in sd_reset() that we set up the wpgrps_size field. Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- hw/sd/milkymist-memcard.c | 4 ++++ 1 file changed, 4 insertions(+)