linux-kernel - [PATCH 6.6 449/638] crypto: qat - fix ring to service map for dcc in 4xxx

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Message-ID: <20240324230116.1348576-450-sashal@kernel.org>
Date: Sun, 24 Mar 2024 18:58:06 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Damian Muszynski <damian.muszynski@...el.com>,
	Giovanni Cabiddu <giovanni.cabiddu@...el.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.6 449/638] crypto: qat - fix ring to service map for dcc in 4xxx

From: Damian Muszynski <damian.muszynski@...el.com>

[ 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@...el.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@...el.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/crypto/intel/qat/qat_4xxx/adf_4xxx_hw_data.c | 8 ++++++++
 1 file changed, 8 insertions(+)

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 |
-- 
2.43.0