linux-kernel - [PATCH v3 04/36] soc: fsl: qe: introduce qe

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Date:   Fri,  1 Nov 2019 13:41:38 +0100
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Qiang Zhao <qiang.zhao@....com>, Li Yang <leoyang.li@....com>,
        Christophe Leroy <christophe.leroy@....fr>
Cc:     linuxppc-dev@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Scott Wood <oss@...error.net>,
        Rasmus Villemoes <linux@...musvillemoes.dk>
Subject: [PATCH v3 04/36] soc: fsl: qe: introduce qe_io{read,write}* wrappers

The QUICC engine drivers use the powerpc-specific out_be32() etc. In
order to allow those drivers to build for other architectures, those
must be replaced by iowrite32be(). However, on powerpc, out_be32() is
a simple inline function while iowrite32be() is out-of-line. So in
order not to introduce a performance regression on powerpc when making
the drivers work on other architectures, introduce qe_io* helpers.

Also define the qe_{clr,set,clrset}bits* helpers in terms of these new
macros.

Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 include/soc/fsl/qe/qe.h | 34 +++++++++++++++++++++++++---------
 1 file changed, 25 insertions(+), 9 deletions(-)

diff --git a/include/soc/fsl/qe/qe.h b/include/soc/fsl/qe/qe.h
index a1aa4eb28f0c..9cac04c692fd 100644
--- a/include/soc/fsl/qe/qe.h
+++ b/include/soc/fsl/qe/qe.h
@@ -241,21 +241,37 @@ static inline int qe_alive_during_sleep(void)
 #define qe_muram_offset cpm_muram_offset
 #define qe_muram_dma cpm_muram_dma
 
-#define qe_setbits_be32(_addr, _v) iowrite32be(ioread32be(_addr) |  (_v), (_addr))
-#define qe_clrbits_be32(_addr, _v) iowrite32be(ioread32be(_addr) & ~(_v), (_addr))
+#ifdef CONFIG_PPC32
+#define qe_iowrite8(val, addr)     out_8(addr, val)
+#define qe_iowrite16be(val, addr)  out_be16(addr, val)
+#define qe_iowrite32be(val, addr)  out_be32(addr, val)
+#define qe_ioread8(addr)           in_8(addr)
+#define qe_ioread16be(addr)        in_be16(addr)
+#define qe_ioread32be(addr)        in_be32(addr)
+#else
+#define qe_iowrite8(val, addr)     iowrite8(val, addr)
+#define qe_iowrite16be(val, addr)  iowrite16be(val, addr)
+#define qe_iowrite32be(val, addr)  iowrite32be(val, addr)
+#define qe_ioread8(addr)           ioread8(addr)
+#define qe_ioread16be(addr)        ioread16be(addr)
+#define qe_ioread32be(addr)        ioread32be(addr)
+#endif
+
+#define qe_setbits_be32(_addr, _v) qe_iowrite32be(qe_ioread32be(_addr) |  (_v), (_addr))
+#define qe_clrbits_be32(_addr, _v) qe_iowrite32be(qe_ioread32be(_addr) & ~(_v), (_addr))
 
-#define qe_setbits_be16(_addr, _v) iowrite16be(ioread16be(_addr) |  (_v), (_addr))
-#define qe_clrbits_be16(_addr, _v) iowrite16be(ioread16be(_addr) & ~(_v), (_addr))
+#define qe_setbits_be16(_addr, _v) qe_iowrite16be(qe_ioread16be(_addr) |  (_v), (_addr))
+#define qe_clrbits_be16(_addr, _v) qe_iowrite16be(qe_ioread16be(_addr) & ~(_v), (_addr))
 
-#define qe_setbits_8(_addr, _v) iowrite8(ioread8(_addr) |  (_v), (_addr))
-#define qe_clrbits_8(_addr, _v) iowrite8(ioread8(_addr) & ~(_v), (_addr))
+#define qe_setbits_8(_addr, _v) qe_iowrite8(qe_ioread8(_addr) |  (_v), (_addr))
+#define qe_clrbits_8(_addr, _v) qe_iowrite8(qe_ioread8(_addr) & ~(_v), (_addr))
 
 #define qe_clrsetbits_be32(addr, clear, set) \
-	iowrite32be((ioread32be(addr) & ~(clear)) | (set), (addr))
+	qe_iowrite32be((qe_ioread32be(addr) & ~(clear)) | (set), (addr))
 #define qe_clrsetbits_be16(addr, clear, set) \
-	iowrite16be((ioread16be(addr) & ~(clear)) | (set), (addr))
+	qe_iowrite16be((qe_ioread16be(addr) & ~(clear)) | (set), (addr))
 #define qe_clrsetbits_8(addr, clear, set) \
-	iowrite8((ioread8(addr) & ~(clear)) | (set), (addr))
+	qe_iowrite8((qe_ioread8(addr) & ~(clear)) | (set), (addr))
 
 /* Structure that defines QE firmware binary files.
  *
-- 
2.23.0