4 files changed, 16 insertions, 19 deletions

diff --git a/drivers/crypto/ccp/psp-dev.h b/drivers/crypto/ccp/psp-dev.h
index 06e1f317216d..55f54bb2b3fb 100644
--- a/drivers/crypto/ccp/psp-dev.h
+++ b/drivers/crypto/ccp/psp-dev.h
@@ -17,9 +17,6 @@
 
 #include "sp-dev.h"
 
-#define PSP_CMDRESP_RESP		BIT(31)
-#define PSP_CMDRESP_ERR_MASK		0xffff
-
 #define MAX_PSP_NAME_LEN		16
 
 extern struct psp_device *psp_master;
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c
index 28945ca7c856..6440d35dfa4e 100644
--- a/drivers/crypto/ccp/sev-dev.c
+++ b/drivers/crypto/ccp/sev-dev.c
@@ -7,6 +7,7 @@
  * Author: Brijesh Singh <brijesh.singh@amd.com>
  */
 
+#include <linux/bitfield.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/kthread.h>
@@ -103,7 +104,7 @@ static void sev_irq_handler(int irq, void *data, unsigned int status)
 
 	/* Check if it is SEV command completion: */
 	reg = ioread32(sev->io_regs + sev->vdata->cmdresp_reg);
-	if (reg & PSP_CMDRESP_RESP) {
+	if (FIELD_GET(PSP_CMDRESP_RESP, reg)) {
 		sev->int_rcvd = 1;
 		wake_up(&sev->int_queue);
 	}
@@ -347,9 +348,7 @@ static int __sev_do_cmd_locked(int cmd, void *data, int *psp_ret)
 
 	sev->int_rcvd = 0;
 
-	reg = cmd;
-	reg <<= SEV_CMDRESP_CMD_SHIFT;
-	reg |= SEV_CMDRESP_IOC;
+	reg = FIELD_PREP(SEV_CMDRESP_CMD, cmd) | SEV_CMDRESP_IOC;
 	iowrite32(reg, sev->io_regs + sev->vdata->cmdresp_reg);
 
 	/* wait for command completion */
@@ -367,11 +366,11 @@ static int __sev_do_cmd_locked(int cmd, void *data, int *psp_ret)
 	psp_timeout = psp_cmd_timeout;
 
 	if (psp_ret)
-		*psp_ret = reg & PSP_CMDRESP_ERR_MASK;
+		*psp_ret = FIELD_GET(PSP_CMDRESP_STS, reg);
 
-	if (reg & PSP_CMDRESP_ERR_MASK) {
-		dev_dbg(sev->dev, "sev command %#x failed (%#010x)\n",
-			cmd, reg & PSP_CMDRESP_ERR_MASK);
+	if (FIELD_GET(PSP_CMDRESP_STS, reg)) {
+		dev_dbg(sev->dev, "sev command %#x failed (%#010lx)\n",
+			cmd, FIELD_GET(PSP_CMDRESP_STS, reg));
 		ret = -EIO;
 	} else {
 		ret = sev_write_init_ex_file_if_required(cmd);
diff --git a/drivers/crypto/ccp/sev-dev.h b/drivers/crypto/ccp/sev-dev.h
index 666c21eb81ab..778c95155e74 100644
--- a/drivers/crypto/ccp/sev-dev.h
+++ b/drivers/crypto/ccp/sev-dev.h
@@ -25,8 +25,8 @@
 #include <linux/miscdevice.h>
 #include <linux/capability.h>
 
+#define SEV_CMDRESP_CMD			GENMASK(26, 16)
 #define SEV_CMD_COMPLETE		BIT(1)
-#define SEV_CMDRESP_CMD_SHIFT		16
 #define SEV_CMDRESP_IOC			BIT(0)
 
 struct sev_misc_dev {
diff --git a/drivers/crypto/ccp/tee-dev.c b/drivers/crypto/ccp/tee-dev.c
index f24fc953718a..5560bf8329a1 100644
--- a/drivers/crypto/ccp/tee-dev.c
+++ b/drivers/crypto/ccp/tee-dev.c
@@ -8,6 +8,7 @@
  * Copyright (C) 2019,2021 Advanced Micro Devices, Inc.
  */
 
+#include <linux/bitfield.h>
 #include <linux/types.h>
 #include <linux/mutex.h>
 #include <linux/delay.h>
@@ -69,7 +70,7 @@ static int tee_wait_cmd_poll(struct psp_tee_device *tee, unsigned int timeout,
 
 	while (--nloop) {
 		*reg = ioread32(tee->io_regs + tee->vdata->cmdresp_reg);
-		if (*reg & PSP_CMDRESP_RESP)
+		if (FIELD_GET(PSP_CMDRESP_RESP, *reg))
 			return 0;
 
 		usleep_range(10000, 10100);
@@ -149,9 +150,9 @@ static int tee_init_ring(struct psp_tee_device *tee)
 		goto free_buf;
 	}
 
-	if (reg & PSP_CMDRESP_ERR_MASK) {
-		dev_err(tee->dev, "tee: ring init command failed (%#010x)\n",
-			reg & PSP_CMDRESP_ERR_MASK);
+	if (FIELD_GET(PSP_CMDRESP_STS, reg)) {
+		dev_err(tee->dev, "tee: ring init command failed (%#010lx)\n",
+			FIELD_GET(PSP_CMDRESP_STS, reg));
 		tee_free_ring(tee);
 		ret = -EIO;
 	}
@@ -179,9 +180,9 @@ static void tee_destroy_ring(struct psp_tee_device *tee)
 	ret = tee_wait_cmd_poll(tee, TEE_DEFAULT_TIMEOUT, &reg);
 	if (ret) {
 		dev_err(tee->dev, "tee: ring destroy command timed out\n");
-	} else if (reg & PSP_CMDRESP_ERR_MASK) {
-		dev_err(tee->dev, "tee: ring destroy command failed (%#010x)\n",
-			reg & PSP_CMDRESP_ERR_MASK);
+	} else if (FIELD_GET(PSP_CMDRESP_STS, reg)) {
+		dev_err(tee->dev, "tee: ring destroy command failed (%#010lx)\n",
+			FIELD_GET(PSP_CMDRESP_STS, reg));
 	}
 
 free_ring: