diff options
| author | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2020-06-23 21:49:26 +0100 |
|---|---|---|
| committer | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2020-06-26 10:13:51 +0100 |
| commit | 244a0ee96545e79af7ade39b510e459ef5a1c366 (patch) | |
| tree | ebd0c104f97e6950c88c35c379e01bf6b0ceb4da /hw/input | |
| parent | 969ca2f7a1a41123f08ce67d7a51075c3ee2fd6e (diff) | |
adb: keep track of devices with pending data
Add a new pending variable to ADBBusState which is a bitmask indicating which
ADB devices have data to send. Update the bitmask every time that an ADB
request is executed.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Tested-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200623204936.24064-13-mark.cave-ayland@ilande.co.uk>
Diffstat (limited to 'hw/input')
| -rw-r--r-- | hw/input/adb.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/hw/input/adb.c b/hw/input/adb.c index bb36ce6fad..c1adb21e6b 100644 --- a/hw/input/adb.c +++ b/hw/input/adb.c @@ -41,6 +41,7 @@ static void adb_device_reset(ADBDevice *d) int adb_request(ADBBusState *s, uint8_t *obuf, const uint8_t *buf, int len) { ADBDevice *d; + ADBDeviceClass *adc; int devaddr, cmd, i; cmd = buf[0] & 0xf; @@ -51,14 +52,27 @@ int adb_request(ADBBusState *s, uint8_t *obuf, const uint8_t *buf, int len) } return 0; } + + s->pending = 0; + for (i = 0; i < s->nb_devices; i++) { + d = s->devices[i]; + adc = ADB_DEVICE_GET_CLASS(d); + + if (adc->devhasdata(d)) { + s->pending |= (1 << d->devaddr); + } + } + devaddr = buf[0] >> 4; for (i = 0; i < s->nb_devices; i++) { d = s->devices[i]; + adc = ADB_DEVICE_GET_CLASS(d); + if (d->devaddr == devaddr) { - ADBDeviceClass *adc = ADB_DEVICE_GET_CLASS(d); return adc->devreq(d, obuf, buf, len); } } + return ADB_RET_NOTPRESENT; } |