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| author | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2020-06-23 21:49:31 +0100 |
|---|---|---|
| committer | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2020-06-26 10:13:52 +0100 |
| commit | cf093b0772ad43538ba45c1dececec7113ab3d03 (patch) | |
| tree | 342b458f6ca966c3b8c50ea6bcd4eec6575915a5 /hw | |
| parent | 45c9d721ef9ea4e50dbede53bc97922767db70b8 (diff) | |
| download | qemu-cf093b0772ad43538ba45c1dececec7113ab3d03.zip qemu-cf093b0772ad43538ba45c1dececec7113ab3d03.tar.gz qemu-cf093b0772ad43538ba45c1dececec7113ab3d03.tar.bz2 | |
pmu: add adb_autopoll_block() and adb_autopoll_unblock() functions
Ensure that the PMU buffer is protected from autopoll requests overwriting
its contents whilst existing PMU requests are in progress.
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: <20200623204936.24064-18-mark.cave-ayland@ilande.co.uk>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/misc/macio/pmu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/misc/macio/pmu.c b/hw/misc/macio/pmu.c index 01d49e6..598d8e7 100644 --- a/hw/misc/macio/pmu.c +++ b/hw/misc/macio/pmu.c @@ -517,6 +517,7 @@ static void pmu_update(PMUState *s) { MOS6522PMUState *mps = &s->mos6522_pmu; MOS6522State *ms = MOS6522(mps); + ADBBusState *adb_bus = &s->adb_bus; /* Only react to changes in reg B */ if (ms->b == s->last_b) { @@ -578,6 +579,7 @@ static void pmu_update(PMUState *s) s->cmd_rsp_pos = 0; s->cmd_state = pmu_state_cmd; + adb_autopoll_block(adb_bus); trace_pmu_debug_protocol_cmd(s->cmd, s->cmdlen, s->rsplen); break; @@ -636,6 +638,7 @@ static void pmu_update(PMUState *s) if (s->cmd_state == pmu_state_rsp && s->rsplen == s->cmd_rsp_pos) { trace_pmu_debug_protocol_cmd_resp_complete(ms->ier); + adb_autopoll_unblock(adb_bus); s->cmd_state = pmu_state_idle; } } |