efElectricAgingTrendMining synchronousMemoryDatabase.h 吉超博 commit at 2020-09-21

efElectricAgingTrendMining/analysisOfEnvironmentalFactors/synchronousMemoryDatabase.h

@@ -0,0 +1,138 @@
+/*
+ * arch/arm/mach-ixp4xx/include/mach/io.h
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright (C) 2002-2005  MontaVista Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#include <linux/bitops.h>
+
+#include <mach/hardware.h>
+
+extern int (*ixp4xx_pci_read)(u32 addr, u32 cmd, u32* data);
+extern int ixp4xx_pci_write(u32 addr, u32 cmd, u32 data);
+
+
+/*
+ * IXP4xx provides two methods of accessing PCI memory space:
+ *
+ * 1) A direct mapped window from 0x48000000 to 0x4BFFFFFF (64MB).
+ *    To access PCI via this space, we simply ioremap() the BAR
+ *    into the kernel and we can use the standard read[bwl]/write[bwl]
+ *    macros. This is the preffered method due to speed but it
+ *    limits the system to just 64MB of PCI memory. This can be
+ *    problematic if using video cards and other memory-heavy targets.
+ *
+ * 2) If > 64MB of memory space is required, the IXP4xx can use indirect
+ *    registers to access the whole 4 GB of PCI memory space (as we do below
+ *    for I/O transactions). This allows currently for up to 1 GB (0x10000000
+ *    to 0x4FFFFFFF) of memory on the bus. The disadvantage of this is that
+ *    every PCI access requires three local register accesses plus a spinlock,
+ *    but in some cases the performance hit is acceptable. In addition, you
+ *    cannot mmap() PCI devices in this case.
+ */
+#ifdef	CONFIG_IXP4XX_INDIRECT_PCI
+
+/*
+ * In the case of using indirect PCI, we simply return the actual PCI
+ * address and our read/write implementation use that to drive the 
+ * access registers. If something outside of PCI is ioremap'd, we
+ * fallback to the default.
+ */
+
+static inline int is_pci_memory(u32 addr)
+{
+	return (addr >= PCIBIOS_MIN_MEM) && (addr <= 0x4FFFFFFF);
+}
+
+#define writeb(v, p)			__indirect_writeb(v, p)
+#define writew(v, p)			__indirect_writew(v, p)
+#define writel(v, p)			__indirect_writel(v, p)
+
+#define writesb(p, v, l)		__indirect_writesb(p, v, l)
+#define writesw(p, v, l)		__indirect_writesw(p, v, l)
+#define writesl(p, v, l)		__indirect_writesl(p, v, l)
+
+#define readb(p)			__indirect_readb(p)
+#define readw(p)			__indirect_readw(p)
+#define readl(p)			__indirect_readl(p)
+
+#define readsb(p, v, l)			__indirect_readsb(p, v, l)
+#define readsw(p, v, l)			__indirect_readsw(p, v, l)
+#define readsl(p, v, l)			__indirect_readsl(p, v, l)
+
+static inline void __indirect_writeb(u8 value, volatile void __iomem *p)
+{
+	u32 addr = (u32)p;
+	u32 n, byte_enables, data;
+
+	if (!is_pci_memory(addr)) {
+		__raw_writeb(value, addr);
+		return;
+	}
+
+	n = addr % 4;
+	byte_enables = (0xf & ~BIT(n)) << IXP4XX_PCI_NP_CBE_BESL;
+	data = value << (8*n);
+	ixp4xx_pci_write(addr, byte_enables | NP_CMD_MEMWRITE, data);
+}
+
+static inline void __indirect_writesb(volatile void __iomem *bus_addr,
+				      const u8 *vaddr, int count)
+{
+	while (count--)
+		writeb(*vaddr++, bus_addr);
+}
+
+static inline void __indirect_writew(u16 value, volatile void __iomem *p)
+{
+	u32 addr = (u32)p;
+	u32 n, byte_enables, data;
+
+	if (!is_pci_memory(addr)) {
+		__raw_writew(value, addr);
+		return;
+	}
+
+	n = addr % 4;
+	byte_enables = (0xf & ~(BIT(n) | BIT(n+1))) << IXP4XX_PCI_NP_CBE_BESL;
+	data = value << (8*n);
+	ixp4xx_pci_write(addr, byte_enables | NP_CMD_MEMWRITE, data);
+}
+
+static inline void __indirect_writesw(volatile void __iomem *bus_addr,
+				      const u16 *vaddr, int count)
+{
+	while (count--)
+		writew(*vaddr++, bus_addr);
+}
+
+static inline void __indirect_writel(u32 value, volatile void __iomem *p)
+{
+	u32 addr = (__force u32)p;
+
+	if (!is_pci_memory(addr)) {
+		__raw_writel(value, p);
+		return;
+	}
+
+	ixp4xx_pci_write(addr, NP_CMD_MEMWRITE, value);
+}
+
+static inline void __indirect_writesl(volatile void __iomem *bus_addr,
+				      const u32 *vaddr, int count)
+{
+	while (count--)
+		writel(*vaddr++, bus_addr);
+}
+
+static inline unsigned char __indirect_readb(const volatile void __iomem *p)
+{