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-rw-r--r--include/asm-blackfin/config-pre.h3
-rw-r--r--include/asm-blackfin/io.h159
2 files changed, 119 insertions, 43 deletions
diff --git a/include/asm-blackfin/config-pre.h b/include/asm-blackfin/config-pre.h
index b1d3a94..1170a2a 100644
--- a/include/asm-blackfin/config-pre.h
+++ b/include/asm-blackfin/config-pre.h
@@ -71,4 +71,7 @@ static inline const char *get_bfin_boot_mode(int bfin_boot)
# define BFIN_BOOT_SPI_SSEL 1
#endif
+/* We rarely use interrupts, so favor throughput over latency */
+#define CONFIG_BFIN_INS_LOWOVERHEAD
+
#endif
diff --git a/include/asm-blackfin/io.h b/include/asm-blackfin/io.h
index 9cb07d4..75244a0 100644
--- a/include/asm-blackfin/io.h
+++ b/include/asm-blackfin/io.h
@@ -1,25 +1,9 @@
/*
* U-boot - io.h IO routines
*
- * Copyright (c) 2005-2007 Analog Devices Inc.
+ * Copyright 2004-2009 Analog Devices Inc.
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- * MA 02110-1301 USA
+ * Licensed under the GPL-2 or later.
*/
#ifndef _BLACKFIN_IO_H
@@ -29,6 +13,8 @@
#include <asm/blackfin.h>
+#define __iomem
+
static inline void sync(void)
{
SSYNC();
@@ -70,70 +56,154 @@ static inline phys_addr_t virt_to_phys(void * vaddr)
*
* readX/writeX() are used to access memory mapped devices. On some
* architectures the memory mapped IO stuff needs to be accessed
- * differently. On the m68k architecture, we just read/write the
+ * differently. On the bfin architecture, we just read/write the
* memory location directly.
*/
-
#ifndef __ASSEMBLY__
-static inline unsigned char readb(const volatile void *addr)
+static inline unsigned char readb(const volatile void __iomem *addr)
{
unsigned int val;
int tmp;
- __asm__ __volatile__ ("cli %1;\n\t"
- "NOP; NOP; SSYNC;\n\t"
- "%0 = b [%2] (z);\n\t"
- "sti %1;\n\t"
- : "=d"(val), "=d"(tmp): "a"(addr));
+ __asm__ __volatile__ (
+ "cli %1;"
+ "NOP; NOP; SSYNC;"
+ "%0 = b [%2] (z);"
+ "sti %1;"
+ : "=d"(val), "=d"(tmp)
+ : "a"(addr)
+ );
return (unsigned char) val;
}
-static inline unsigned short readw(const volatile void *addr)
+static inline unsigned short readw(const volatile void __iomem *addr)
{
unsigned int val;
int tmp;
- __asm__ __volatile__ ("cli %1;\n\t"
- "NOP; NOP; SSYNC;\n\t"
- "%0 = w [%2] (z);\n\t"
- "sti %1;\n\t"
- : "=d"(val), "=d"(tmp): "a"(addr));
+ __asm__ __volatile__ (
+ "cli %1;"
+ "NOP; NOP; SSYNC;"
+ "%0 = w [%2] (z);"
+ "sti %1;"
+ : "=d"(val), "=d"(tmp)
+ : "a"(addr)
+ );
return (unsigned short) val;
}
-static inline unsigned int readl(const volatile void *addr)
+static inline unsigned int readl(const volatile void __iomem *addr)
{
unsigned int val;
int tmp;
- __asm__ __volatile__ ("cli %1;\n\t"
- "NOP; NOP; SSYNC;\n\t"
- "%0 = [%2];\n\t"
- "sti %1;\n\t"
- : "=d"(val), "=d"(tmp): "a"(addr));
+ __asm__ __volatile__ (
+ "cli %1;"
+ "NOP; NOP; SSYNC;"
+ "%0 = [%2];"
+ "sti %1;"
+ : "=d"(val), "=d"(tmp)
+ : "a"(addr)
+ );
+
return val;
}
-#define __raw_readb readb
-#define __raw_readw readw
-#define __raw_readl readl
-
#endif /* __ASSEMBLY__ */
#define writeb(b, addr) (void)((*(volatile unsigned char *) (addr)) = (b))
#define writew(b, addr) (void)((*(volatile unsigned short *) (addr)) = (b))
#define writel(b, addr) (void)((*(volatile unsigned int *) (addr)) = (b))
+
+#define __raw_readb readb
+#define __raw_readw readw
+#define __raw_readl readl
#define __raw_writeb writeb
#define __raw_writew writew
#define __raw_writel writel
-
#define memset_io(a, b, c) memset((void *)(a), (b), (c))
#define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
#define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
+/* Convert "I/O port addresses" to actual addresses. i.e. ugly casts. */
+#define __io(port) ((void *)(unsigned long)(port))
+
+#define inb(port) readb(__io(port))
+#define inw(port) readw(__io(port))
+#define inl(port) readl(__io(port))
+#define outb(x, port) writeb(x, __io(port))
+#define outw(x, port) writew(x, __io(port))
+#define outl(x, port) writel(x, __io(port))
+
+#define inb_p(port) inb(__io(port))
+#define inw_p(port) inw(__io(port))
+#define inl_p(port) inl(__io(port))
+#define outb_p(x, port) outb(x, __io(port))
+#define outw_p(x, port) outw(x, __io(port))
+#define outl_p(x, port) outl(x, __io(port))
+
+#define ioread8_rep(a, d, c) readsb(a, d, c)
+#define ioread16_rep(a, d, c) readsw(a, d, c)
+#define ioread32_rep(a, d, c) readsl(a, d, c)
+#define iowrite8_rep(a, s, c) writesb(a, s, c)
+#define iowrite16_rep(a, s, c) writesw(a, s, c)
+#define iowrite32_rep(a, s, c) writesl(a, s, c)
+
+#define ioread8(x) readb(x)
+#define ioread16(x) readw(x)
+#define ioread32(x) readl(x)
+#define iowrite8(val, x) writeb(val, x)
+#define iowrite16(val, x) writew(val, x)
+#define iowrite32(val, x) writel(val, x)
+
+#define mmiowb() wmb()
+
+#ifndef __ASSEMBLY__
+
+extern void outsb(unsigned long port, const void *addr, unsigned long count);
+extern void outsw(unsigned long port, const void *addr, unsigned long count);
+extern void outsw_8(unsigned long port, const void *addr, unsigned long count);
+extern void outsl(unsigned long port, const void *addr, unsigned long count);
+
+extern void insb(unsigned long port, void *addr, unsigned long count);
+extern void insw(unsigned long port, void *addr, unsigned long count);
+extern void insw_8(unsigned long port, void *addr, unsigned long count);
+extern void insl(unsigned long port, void *addr, unsigned long count);
+extern void insl_16(unsigned long port, void *addr, unsigned long count);
+
+static inline void readsl(const void __iomem *addr, void *buf, int len)
+{
+ insl((unsigned long)addr, buf, len);
+}
+
+static inline void readsw(const void __iomem *addr, void *buf, int len)
+{
+ insw((unsigned long)addr, buf, len);
+}
+
+static inline void readsb(const void __iomem *addr, void *buf, int len)
+{
+ insb((unsigned long)addr, buf, len);
+}
+
+static inline void writesl(const void __iomem *addr, const void *buf, int len)
+{
+ outsl((unsigned long)addr, buf, len);
+}
+
+static inline void writesw(const void __iomem *addr, const void *buf, int len)
+{
+ outsw((unsigned long)addr, buf, len);
+}
+
+static inline void writesb(const void __iomem *addr, const void *buf, int len)
+{
+ outsb((unsigned long)addr, buf, len);
+}
+
#if defined(CONFIG_STAMP_CF) || defined(CONFIG_BFIN_IDE)
/* This hack for CF/IDE needs to be addressed at some point */
extern void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words);
@@ -151,4 +221,7 @@ extern void cf_outb(unsigned char val, volatile unsigned char *addr);
#endif
#endif
+
+#endif /* __KERNEL__ */
+
#endif
generated by cgit v1.1 at 2024-12-03 23:46:45 +0000