linux-kernel - [PATCH] crypto: ccp - Provide MMIO register naming for documenation

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Message-ID: <f345e88d664a6d6bb112eaae0e1d74d96d2e132b.1673899406.git.thomas.lendacky@amd.com>
Date:   Mon, 16 Jan 2023 14:03:26 -0600
From:   Tom Lendacky <thomas.lendacky@....com>
To:     <linux-crypto@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Herbert Xu <herbert@...dor.apana.org.au>,
        David Miller <davem@...emloft.net>,
        John Allen <john.allen@....com>
Subject: [PATCH] crypto: ccp - Provide MMIO register naming for documenation

Add comments next to the version data MMIO register values to identify
the register name being used.

Signed-off-by: Tom Lendacky <thomas.lendacky@....com>
---
 drivers/crypto/ccp/sp-pci.c | 46 ++++++++++++++++++-------------------
 1 file changed, 23 insertions(+), 23 deletions(-)

diff --git a/drivers/crypto/ccp/sp-pci.c b/drivers/crypto/ccp/sp-pci.c
index 084d052fddcc..cde33b2ac71b 100644
--- a/drivers/crypto/ccp/sp-pci.c
+++ b/drivers/crypto/ccp/sp-pci.c
@@ -342,52 +342,52 @@ static int __maybe_unused sp_pci_resume(struct device *dev)
 
 #ifdef CONFIG_CRYPTO_DEV_SP_PSP
 static const struct sev_vdata sevv1 = {
-	.cmdresp_reg		= 0x10580,
-	.cmdbuff_addr_lo_reg	= 0x105e0,
-	.cmdbuff_addr_hi_reg	= 0x105e4,
+	.cmdresp_reg		= 0x10580,	/* C2PMSG_32 */
+	.cmdbuff_addr_lo_reg	= 0x105e0,	/* C2PMSG_56 */
+	.cmdbuff_addr_hi_reg	= 0x105e4,	/* C2PMSG_57 */
 };
 
 static const struct sev_vdata sevv2 = {
-	.cmdresp_reg		= 0x10980,
-	.cmdbuff_addr_lo_reg	= 0x109e0,
-	.cmdbuff_addr_hi_reg	= 0x109e4,
+	.cmdresp_reg		= 0x10980,	/* C2PMSG_32 */
+	.cmdbuff_addr_lo_reg	= 0x109e0,	/* C2PMSG_56 */
+	.cmdbuff_addr_hi_reg	= 0x109e4,	/* C2PMSG_57 */
 };
 
 static const struct tee_vdata teev1 = {
-	.cmdresp_reg		= 0x10544,
-	.cmdbuff_addr_lo_reg	= 0x10548,
-	.cmdbuff_addr_hi_reg	= 0x1054c,
-	.ring_wptr_reg          = 0x10550,
-	.ring_rptr_reg          = 0x10554,
+	.cmdresp_reg		= 0x10544,	/* C2PMSG_17 */
+	.cmdbuff_addr_lo_reg	= 0x10548,	/* C2PMSG_18 */
+	.cmdbuff_addr_hi_reg	= 0x1054c,	/* C2PMSG_19 */
+	.ring_wptr_reg          = 0x10550,	/* C2PMSG_20 */
+	.ring_rptr_reg          = 0x10554,	/* C2PMSG_21 */
 };
 
 static const struct psp_vdata pspv1 = {
 	.sev			= &sevv1,
-	.feature_reg		= 0x105fc,
-	.inten_reg		= 0x10610,
-	.intsts_reg		= 0x10614,
+	.feature_reg		= 0x105fc,	/* C2PMSG_63 */
+	.inten_reg		= 0x10610,	/* P2CMSG_INTEN */
+	.intsts_reg		= 0x10614,	/* P2CMSG_INTSTS */
 };
 
 static const struct psp_vdata pspv2 = {
 	.sev			= &sevv2,
-	.feature_reg		= 0x109fc,
-	.inten_reg		= 0x10690,
-	.intsts_reg		= 0x10694,
+	.feature_reg		= 0x109fc,	/* C2PMSG_63 */
+	.inten_reg		= 0x10690,	/* P2CMSG_INTEN */
+	.intsts_reg		= 0x10694,	/* P2CMSG_INTSTS */
 };
 
 static const struct psp_vdata pspv3 = {
 	.tee			= &teev1,
-	.feature_reg		= 0x109fc,
-	.inten_reg		= 0x10690,
-	.intsts_reg		= 0x10694,
+	.feature_reg		= 0x109fc,	/* C2PMSG_63 */
+	.inten_reg		= 0x10690,	/* P2CMSG_INTEN */
+	.intsts_reg		= 0x10694,	/* P2CMSG_INTSTS */
 };
 
 static const struct psp_vdata pspv4 = {
 	.sev			= &sevv2,
 	.tee			= &teev1,
-	.feature_reg		= 0x109fc,
-	.inten_reg		= 0x10690,
-	.intsts_reg		= 0x10694,
+	.feature_reg		= 0x109fc,	/* C2PMSG_63 */
+	.inten_reg		= 0x10690,	/* P2CMSG_INTEN */
+	.intsts_reg		= 0x10694,	/* P2CMSG_INTSTS */
 };
 
 #endif
-- 
2.38.1