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crypto: qat - leverage bitfield.h utils for PFVF messages 

The PFVF protocol defines messages composed of a number of control
bitfields. Replace all the code setting and retrieving such bits
with the utilities from bitfield.h, to improve code quality and
readability.

Signed-off-by: Marco Chiappero <marco.chiappero@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Fiona Trahe <fiona.trahe@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Marco Chiappero 2021-12-16 09:13:21 +00:00 committed by Herbert Xu
parent db1c034801
commit 952f4e8127
3 changed files with 14 additions and 14 deletions
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8
drivers/crypto/qat/qat_common/adf_pfvf_msg.h
View File

@ -3,6 +3,8 @@
#ifndef ADF_PFVF_MSG_H
#define ADF_PFVF_MSG_H
#include <linux/bits.h>
/*
* PF<->VF Messaging
* The PF has an array of 32-bit PF2VF registers, one for each VF. The
@ -86,10 +88,8 @@ enum pfvf_compatibility_version {
};
/* PF->VF Version Response */
#define ADF_PF2VF_VERSION_RESP_VERS_SHIFT 0
#define ADF_PF2VF_VERSION_RESP_VERS_MASK 0xFF
#define ADF_PF2VF_VERSION_RESP_RESULT_SHIFT 8
#define ADF_PF2VF_VERSION_RESP_RESULT_MASK 0x03
#define ADF_PF2VF_VERSION_RESP_VERS_MASK GENMASK(7, 0)
#define ADF_PF2VF_VERSION_RESP_RESULT_MASK GENMASK(9, 8)
enum pf2vf_compat_response {
ADF_PF2VF_VF_COMPATIBLE = 0x01,

13
drivers/crypto/qat/qat_common/adf_pfvf_pf_proto.c
View File

@ -1,5 +1,6 @@
// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
/* Copyright(c) 2015 - 2021 Intel Corporation */
#include <linux/bitfield.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include "adf_accel_devices.h"
@ -64,9 +65,9 @@ static int adf_handle_vf2pf_msg(struct adf_accel_dev *accel_dev, u8 vf_nr,
compat = ADF_PF2VF_VF_COMPAT_UNKNOWN;
resp->type = ADF_PF2VF_MSGTYPE_VERSION_RESP;
resp->data = ADF_PFVF_COMPAT_THIS_VERSION <<
ADF_PF2VF_VERSION_RESP_VERS_SHIFT;
resp->data |= compat << ADF_PF2VF_VERSION_RESP_RESULT_SHIFT;
resp->data = FIELD_PREP(ADF_PF2VF_VERSION_RESP_VERS_MASK,
ADF_PFVF_COMPAT_THIS_VERSION) |
FIELD_PREP(ADF_PF2VF_VERSION_RESP_RESULT_MASK, compat);
}
break;
case ADF_VF2PF_MSGTYPE_VERSION_REQ:
@ -80,10 +81,10 @@ static int adf_handle_vf2pf_msg(struct adf_accel_dev *accel_dev, u8 vf_nr,
/* PF always newer than legacy VF */
compat = ADF_PF2VF_VF_COMPATIBLE;
resp->type = ADF_PF2VF_MSGTYPE_VERSION_RESP;
/* Set legacy major and minor version to the latest, 1.1 */
resp->data |= 0x11;
resp->data |= compat << ADF_PF2VF_VERSION_RESP_RESULT_SHIFT;
resp->type = ADF_PF2VF_MSGTYPE_VERSION_RESP;
resp->data = FIELD_PREP(ADF_PF2VF_VERSION_RESP_VERS_MASK, 0x11) |
FIELD_PREP(ADF_PF2VF_VERSION_RESP_RESULT_MASK, compat);
}
break;
case ADF_VF2PF_MSGTYPE_INIT:

7
drivers/crypto/qat/qat_common/adf_pfvf_vf_msg.c
View File

@ -1,5 +1,6 @@
// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
/* Copyright(c) 2015 - 2021 Intel Corporation */
#include <linux/bitfield.h>
#include "adf_accel_devices.h"
#include "adf_common_drv.h"
#include "adf_pfvf_msg.h"
@ -67,10 +68,8 @@ int adf_vf2pf_request_version(struct adf_accel_dev *accel_dev)
return ret;
}
pf_version = (resp.data >> ADF_PF2VF_VERSION_RESP_VERS_SHIFT)
& ADF_PF2VF_VERSION_RESP_VERS_MASK;
compat = (resp.data >> ADF_PF2VF_VERSION_RESP_RESULT_SHIFT)
& ADF_PF2VF_VERSION_RESP_RESULT_MASK;
pf_version = FIELD_GET(ADF_PF2VF_VERSION_RESP_VERS_MASK, resp.data);
compat = FIELD_GET(ADF_PF2VF_VERSION_RESP_RESULT_MASK, resp.data);
/* Response from PF received, check compatibility */
switch (compat) {