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| author | Markus Armbruster <armbru@redhat.com> | 2015-03-23 19:03:13 +0100 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2015-04-02 15:26:27 +0200 |
| commit | af9e40aa8f36e30e89f16323b3d341ee59309b7e (patch) | |
| tree | 7ba0eb254d708e533b3fd1e207856f07fba33fdd /hw/sd/pl181.c | |
| parent | b8a86c4ac4d04c106ba38fbd707041cba334a155 (diff) | |
| download | qemu-af9e40aa8f36e30e89f16323b3d341ee59309b7e.zip qemu-af9e40aa8f36e30e89f16323b3d341ee59309b7e.tar.gz qemu-af9e40aa8f36e30e89f16323b3d341ee59309b7e.tar.bz2 | |
hw: Mark devices picking up block backends actively FIXME
Drives defined with if!=none are for board initialization to wire up.
Board code calls drive_get() or similar to find them, and creates
devices with their qdev drive properties set accordingly.
Except a few devices go on a fishing expedition for a suitable backend
instead of exposing a drive property for board code to set: they call
driver_get() or drive_get_next() in their realize() or init() method
to implicitly connect to the "next" backend with a certain interface
type.
Picking up backends that way works when the devices are created by
board code. But it's inappropriate for -device or device_add. Not
only is this inconsistent with how the other block device models work
(they connect to a backend explicitly identified by a "drive"
property), it breaks when the "next" backend has been picked up by the
board already.
Example:
$ qemu-system-arm -S -M connex -pflash flash.img -device ssi-sd
Aborted (core dumped)
Mark them with suitable FIXME comments.
Cc: Andrzej Zaborowski <balrogg@gmail.com>
Cc: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Cc: "Andreas Färber" <andreas.faerber@web.de>
Cc: Michael Walle <michael@walle.cc>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'hw/sd/pl181.c')
| -rw-r--r-- | hw/sd/pl181.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/sd/pl181.c b/hw/sd/pl181.c index e704b6e..bf37da6 100644 --- a/hw/sd/pl181.c +++ b/hw/sd/pl181.c @@ -490,6 +490,7 @@ static int pl181_init(SysBusDevice *sbd) sysbus_init_irq(sbd, &s->irq[0]); sysbus_init_irq(sbd, &s->irq[1]); qdev_init_gpio_out(dev, s->cardstatus, 2); + /* FIXME use a qdev drive property instead of drive_get_next() */ dinfo = drive_get_next(IF_SD); s->card = sd_init(dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, false); if (s->card == NULL) { |