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From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: linux-crypto@vger.kernel.org
Cc: "Andrey Smirnov" <andrew.smirnov@gmail.com>,
	"Horia Geantă" <horia.geanta@nxp.com>,
	"Chris Spencer" <christopher.spencer@sea.co.uk>,
	"Cory Tusar" <cory.tusar@zii.aero>,
	"Chris Healy" <cphealy@gmail.com>,
	"Lucas Stach" <l.stach@pengutronix.de>,
	"Aymen Sghaier" <aymen.sghaier@nxp.com>,
	"Leonard Crestez" <leonard.crestez@nxp.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v7 05/15] crytpo: caam - make use of iowrite64*_hi_lo in wr_reg64
Date: Mon, 12 Aug 2019 13:07:29 -0700
Message-ID: <20190812200739.30389-6-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20190812200739.30389-1-andrew.smirnov@gmail.com>

In order to be able to unify 64 and 32 bit implementations of
wr_reg64, let's convert it to use helpers from
<linux/io-64-nonatomic-hi-lo.h> first. Here are the steps of the
transformation:

1. Inline wr_reg32 helpers:

	if (!caam_imx && caam_little_end) {
		if (caam_little_end) {
			iowrite32(data >> 32, (u32 __iomem *)(reg) + 1);
			iowrite32(data, (u32 __iomem *)(reg));
		} else {
			iowrite32be(data >> 32, (u32 __iomem *)(reg) + 1);
			iowrite32be(data, (u32 __iomem *)(reg));
		}
	} else {
		if (caam_little_end) {
			iowrite32(data >> 32, (u32 __iomem *)(reg));
			iowrite32(data, (u32 __iomem *)(reg) + 1);
		} else {
			iowrite32be(data >> 32, (u32 __iomem *)(reg));
			iowrite32be(data, (u32 __iomem *)(reg) + 1);
		}
	}

2. Transfrom the conditionals such that the check for
'caam_little_end' is at the top level:

	if (caam_little_end) {
		if (!caam_imx) {
			iowrite32(data >> 32, (u32 __iomem *)(reg) + 1);
			iowrite32(data, (u32 __iomem *)(reg));
		} else {
			iowrite32(data >> 32, (u32 __iomem *)(reg));
			iowrite32(data, (u32 __iomem *)(reg) + 1);
		}
	} else {
		iowrite32be(data >> 32, (u32 __iomem *)(reg));
		iowrite32be(data, (u32 __iomem *)(reg) + 1);
	}

3. Invert the check for !caam_imx:

	if (caam_little_end) {
		if (caam_imx) {
			iowrite32(data >> 32, (u32 __iomem *)(reg));
			iowrite32(data, (u32 __iomem *)(reg) + 1);
		} else {
			iowrite32(data >> 32, (u32 __iomem *)(reg) + 1);
			iowrite32(data, (u32 __iomem *)(reg));
		}
	} else {
		iowrite32be(data >> 32, (u32 __iomem *)(reg));
		iowrite32be(data, (u32 __iomem *)(reg) + 1);
	}

4. Make use of iowrite64* helpers from <linux/io-64-nonatomic-hi-lo.h>

	if (caam_little_end) {
		if (caam_imx) {
			iowrite32(data >> 32, (u32 __iomem *)(reg));
			iowrite32(data, (u32 __iomem *)(reg) + 1);
		} else {
			iowrite64(data, reg);
		}
	} else {
		iowrite64be(data, reg);
	}

No functional change intended.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Cc: Chris Spencer <christopher.spencer@sea.co.uk>
Cc: Cory Tusar <cory.tusar@zii.aero>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Horia Geantă <horia.geanta@nxp.com>
Cc: Aymen Sghaier <aymen.sghaier@nxp.com>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/crypto/caam/regs.h | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h
index 8591914d5c51..6e8352ac0d92 100644
--- a/drivers/crypto/caam/regs.h
+++ b/drivers/crypto/caam/regs.h
@@ -12,6 +12,7 @@
 #include <linux/types.h>
 #include <linux/bitops.h>
 #include <linux/io.h>
+#include <linux/io-64-nonatomic-hi-lo.h>
 
 /*
  * Architecture-specific register access methods
@@ -157,12 +158,15 @@ static inline u64 rd_reg64(void __iomem *reg)
 #else /* CONFIG_64BIT */
 static inline void wr_reg64(void __iomem *reg, u64 data)
 {
-	if (!caam_imx && caam_little_end) {
-		wr_reg32((u32 __iomem *)(reg) + 1, data >> 32);
-		wr_reg32((u32 __iomem *)(reg), data);
+	if (caam_little_end) {
+		if (caam_imx) {
+			iowrite32(data >> 32, (u32 __iomem *)(reg));
+			iowrite32(data, (u32 __iomem *)(reg) + 1);
+		} else {
+			iowrite64(data, reg);
+		}
 	} else {
-		wr_reg32((u32 __iomem *)(reg), data >> 32);
-		wr_reg32((u32 __iomem *)(reg) + 1, data);
+		iowrite64be(data, reg);
 	}
 }
 
-- 
2.21.0


  parent reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-12 20:07 [PATCH v7 00/15] crypto: caam - Add i.MX8MQ support Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 01/15] crypto: caam - move DMA mask selection into a function Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 02/15] crypto: caam - simplfy clock initialization Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 03/15] crypto: caam - convert caam_jr_init() to use devres Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 04/15] crypto: caam - request JR IRQ as the last step Andrey Smirnov
2019-08-12 20:07 ` Andrey Smirnov [this message]
2019-08-12 20:07 ` [PATCH v7 06/15] crypto: caam - use ioread64*_hi_lo in rd_reg64 Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 07/15] crypto: caam - drop 64-bit only wr/rd_reg64() Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 08/15] crypto: caam - share definition for MAX_SDLEN Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 09/15] crypto: caam - make CAAM_PTR_SZ dynamic Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 10/15] crypto: caam - move cpu_to_caam_dma() selection to runtime Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 11/15] crypto: caam - drop explicit usage of struct jr_outentry Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 12/15] crypto: caam - don't hardcode inpentry size Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 13/15] crypto: caam - force DMA address to 32-bit on 64-bit i.MX SoCs Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 14/15] crypto: caam - always select job ring via RSR on i.MX8MQ Andrey Smirnov
2019-08-12 20:07 ` [PATCH v7 15/15] crypto: caam - add clock entry for i.MX8MQ Andrey Smirnov
2019-08-13 13:59 ` [PATCH v7 00/15] crypto: caam - Add i.MX8MQ support Horia Geanta
2019-08-13 18:51   ` Andrey Smirnov
2019-08-14 10:26     ` Horia Geanta

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