linux-kernel - [PATCH 1/2] iomap: move some definitions to include/linux/io.h

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Date:   Fri, 28 Aug 2020 14:34:02 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <linux-pci@...r.kernel.org>
CC:     <bhelgaas@...gle.com>, <guohanjun@...wei.com>,
        <yangyingliang@...wei.com>
Subject: [PATCH 1/2] iomap: move some definitions to include/linux/io.h

Move some IO macros and bad_io_access() to include/linux/io.h
This prepares for moving pci_iounmap() to lib/pci_iomap.c.

Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 include/linux/io.h | 36 ++++++++++++++++++++++++++++++++++++
 lib/iomap.c        | 36 ------------------------------------
 2 files changed, 36 insertions(+), 36 deletions(-)

diff --git a/include/linux/io.h b/include/linux/io.h
index 8394c56babc26..fa040f8114eaa 100644
--- a/include/linux/io.h
+++ b/include/linux/io.h
@@ -13,6 +13,42 @@
 #include <asm/io.h>
 #include <asm/page.h>
 
+#ifndef HAVE_ARCH_PIO_SIZE
+/*
+ * We encode the physical PIO addresses (0-0xffff) into the
+ * pointer by offsetting them with a constant (0x10000) and
+ * assuming that all the low addresses are always PIO. That means
+ * we can do some sanity checks on the low bits, and don't
+ * need to just take things for granted.
+ */
+#define PIO_OFFSET	0x10000UL
+#define PIO_MASK	0x0ffffUL
+#define PIO_RESERVED	0x40000UL
+#endif
+
+static inline void bad_io_access(unsigned long port, const char *access)
+{
+	static int count = 10;
+	if (count) {
+		count--;
+		WARN(1, KERN_ERR "Bad IO access at port %#lx (%s)\n", port, access);
+	}
+}
+
+/*
+ * Ugly macros are a way of life.
+ */
+#define IO_COND(addr, is_pio, is_mmio) do {			\
+	unsigned long port = (unsigned long __force)addr;	\
+	if (port >= PIO_RESERVED) {				\
+		is_mmio;					\
+	} else if (port > PIO_OFFSET) {				\
+		port &= PIO_MASK;				\
+		is_pio;						\
+	} else							\
+		bad_io_access(port, #is_pio);			\
+} while (0)
+
 struct device;
 struct resource;
 
diff --git a/lib/iomap.c b/lib/iomap.c
index fbaa3e8f19d6c..d40bc6f662540 100644
--- a/lib/iomap.c
+++ b/lib/iomap.c
@@ -23,42 +23,6 @@
  * implementation and should do their own copy.
  */
 
-#ifndef HAVE_ARCH_PIO_SIZE
-/*
- * We encode the physical PIO addresses (0-0xffff) into the
- * pointer by offsetting them with a constant (0x10000) and
- * assuming that all the low addresses are always PIO. That means
- * we can do some sanity checks on the low bits, and don't
- * need to just take things for granted.
- */
-#define PIO_OFFSET	0x10000UL
-#define PIO_MASK	0x0ffffUL
-#define PIO_RESERVED	0x40000UL
-#endif
-
-static void bad_io_access(unsigned long port, const char *access)
-{
-	static int count = 10;
-	if (count) {
-		count--;
-		WARN(1, KERN_ERR "Bad IO access at port %#lx (%s)\n", port, access);
-	}
-}
-
-/*
- * Ugly macros are a way of life.
- */
-#define IO_COND(addr, is_pio, is_mmio) do {			\
-	unsigned long port = (unsigned long __force)addr;	\
-	if (port >= PIO_RESERVED) {				\
-		is_mmio;					\
-	} else if (port > PIO_OFFSET) {				\
-		port &= PIO_MASK;				\
-		is_pio;						\
-	} else							\
-		bad_io_access(port, #is_pio );			\
-} while (0)
-
 #ifndef pio_read16be
 #define pio_read16be(port) swab16(inw(port))
 #define pio_read32be(port) swab32(inl(port))
-- 
2.25.1