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| author | Peter Maydell <peter.maydell@linaro.org> | 2022-04-08 15:15:25 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2022-04-22 14:43:24 +0100 |
| commit | 3851af45858a03391c74361bc69bf7a31ad30fbd (patch) | |
| tree | a9d86a612e2dbe66b11d34678bbea40e99f56dc7 /hw/intc/gicv3_internal.h | |
| parent | 7c087bd33073503914cd0c17084de459f68ac002 (diff) | |
| download | qemu-3851af45858a03391c74361bc69bf7a31ad30fbd.zip qemu-3851af45858a03391c74361bc69bf7a31ad30fbd.tar.gz qemu-3851af45858a03391c74361bc69bf7a31ad30fbd.tar.bz2 | |
hw/intc/arm_gicv3_its: Implement VMOVP
Implement the GICv4 VMOVP command, which updates an entry in the vPE
table to change its rdbase field. This command is unique in the ITS
command set because its effects must be propagated to all the other
ITSes connected to the same GIC as the ITS which executes the VMOVP
command.
The GICv4 spec allows two implementation choices for handling the
propagation to other ITSes:
* If GITS_TYPER.VMOVP is 1, the guest only needs to issue the command
on one ITS, and the implementation handles the propagation to
all ITSes
* If GITS_TYPER.VMOVP is 0, the guest must issue the command on
every ITS, and arrange for the ITSes to synchronize the updates
with each other by setting ITSList and Sequence Number fields
in the command packets
We choose the GITS_TYPER.VMOVP = 1 approach, and synchronously
execute the update on every ITS.
For GICv4.1 this command has extra fields in the command packet and
additional behaviour. We define the 4.1-only fields with the FIELD
macro, but only implement the GICv4.0 version of the command.
Note that we don't update the reported GITS_TYPER value here;
we'll do that later in a commit which updates all the reported
feature bit and ID register values for GICv4.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220408141550.1271295-17-peter.maydell@linaro.org
[PMM: Moved gicv3_foreach_its() to arm_gicv3_its_common.h,
for consistency with gicv3_add_its()]
Diffstat (limited to 'hw/intc/gicv3_internal.h')
| -rw-r--r-- | hw/intc/gicv3_internal.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/hw/intc/gicv3_internal.h b/hw/intc/gicv3_internal.h index 6e22c80..79c45d0 100644 --- a/hw/intc/gicv3_internal.h +++ b/hw/intc/gicv3_internal.h @@ -329,6 +329,7 @@ FIELD(GITS_TYPER, CIL, 36, 1) #define GITS_CMD_INVALL 0x0D #define GITS_CMD_MOVALL 0x0E #define GITS_CMD_DISCARD 0x0F +#define GITS_CMD_VMOVP 0x22 #define GITS_CMD_VMAPP 0x29 #define GITS_CMD_VMAPTI 0x2A #define GITS_CMD_VMAPI 0x2B @@ -389,6 +390,14 @@ FIELD(VMAPP_2, V, 63, 1) FIELD(VMAPP_3, VPTSIZE, 0, 8) /* For GICv4.0, bits [7:6] are RES0 */ FIELD(VMAPP_3, VPTADDR, 16, 36) +/* VMOVP command fields */ +FIELD(VMOVP_0, SEQNUM, 32, 16) /* not used for GITS_TYPER.VMOVP == 1 */ +FIELD(VMOVP_1, ITSLIST, 0, 16) /* not used for GITS_TYPER.VMOVP == 1 */ +FIELD(VMOVP_1, VPEID, 32, 16) +FIELD(VMOVP_2, RDBASE, 16, 36) +FIELD(VMOVP_2, DB, 63, 1) /* GICv4.1 only */ +FIELD(VMOVP_3, DEFAULT_DOORBELL, 0, 32) /* GICv4.1 only */ + /* * 12 bytes Interrupt translation Table Entry size * as per Table 5.3 in GICv3 spec |