This is a note to let you know that I've just added the patch titled
crypto: qat - fix ring to service map for dcc in 4xxx
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
crypto-qat-fix-ring-to-service-map-for-dcc-in-4xxx.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0173d360c0fd4a4ac7b553a2154c599a079344c0
Author: Damian Muszynski <damian.muszynski@xxxxxxxxx>
Date: Fri Feb 16 18:21:54 2024 +0100
crypto: qat - fix ring to service map for dcc in 4xxx
[ Upstream commit df018f82002a8b4dc407bc9a6f416b9241d14415 ]
If a device is configured for data compression chaining (dcc), half of the
engines are loaded with the symmetric crypto image and the rest are loaded
with the compression image.
However, in such configuration all rings can handle compression requests.
Fix the ring to service mapping so that when a device is configured for
dcc, the ring to service mapping reports that all rings in a bank can
be used for compression.
Fixes: a238487f7965 ("crypto: qat - fix ring to service map for QAT GEN4")
Signed-off-by: Damian Muszynski <damian.muszynski@xxxxxxxxx>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@xxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c b/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c
index 524fdcf3d973b..615af08832076 100644
--- a/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c
+++ b/drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c
@@ -417,6 +417,13 @@ static u16 get_ring_to_svc_map(struct adf_accel_dev *accel_dev)
if (!fw_config)
return 0;
+ /* If dcc, all rings handle compression requests */
+ if (adf_get_service_enabled(accel_dev) == SVC_DCC) {
+ for (i = 0; i < RP_GROUP_COUNT; i++)
+ rps[i] = COMP;
+ goto set_mask;
+ }
+
for (i = 0; i < RP_GROUP_COUNT; i++) {
switch (fw_config[i].ae_mask) {
case ADF_AE_GROUP_0:
@@ -445,6 +452,7 @@ static u16 get_ring_to_svc_map(struct adf_accel_dev *accel_dev)
}
}
+set_mask:
ring_to_svc_map = rps[RP_GROUP_0] << ADF_CFG_SERV_RING_PAIR_0_SHIFT |
rps[RP_GROUP_1] << ADF_CFG_SERV_RING_PAIR_1_SHIFT |
rps[RP_GROUP_0] << ADF_CFG_SERV_RING_PAIR_2_SHIFT |
