Initial revision

416fef1a · Wolfgang Denk · 717b5aad · 416fef1a · 416fef1a
Commit 416fef1a authored 22 years ago by Wolfgang Denk
--- a/include/asm-ppc/cache.h
+++ b/include/asm-ppc/cache.h
+/*
+ * include/asm-ppc/cache.h
+ */
+#ifndef __ARCH_PPC_CACHE_H
+#define __ARCH_PPC_CACHE_H
+
+#include <linux/config.h>
+#include <asm/processor.h>
+
+/* bytes per L1 cache line */
+#if !defined(CONFIG_8xx) || defined(CONFIG_8260)
+#if defined(CONFIG_PPC64BRIDGE)
+#define L1_CACHE_BYTES	128
+#else
+#define	L1_CACHE_BYTES  32
+#endif /* PPC64 */
+#else
+#define	L1_CACHE_BYTES	16
+#endif /* !8xx || 8260 */
+
+#define	L1_CACHE_ALIGN(x)       (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
+#define	L1_CACHE_PAGES		8
+
+#define	SMP_CACHE_BYTES L1_CACHE_BYTES
+
+#ifdef MODULE
+#define __cacheline_aligned __attribute__((__aligned__(L1_CACHE_BYTES)))
+#else
+#define __cacheline_aligned					\
+  __attribute__((__aligned__(L1_CACHE_BYTES),			\
+		 __section__(".data.cacheline_aligned")))
+#endif
+
+#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
+extern void flush_dcache_range(unsigned long start, unsigned long stop);
+extern void clean_dcache_range(unsigned long start, unsigned long stop);
+extern void invalidate_dcache_range(unsigned long start, unsigned long stop);
+#ifdef CFG_INIT_RAM_LOCK
+extern void unlock_ram_in_cache(void);
+#endif /* CFG_INIT_RAM_LOCK */
+#endif /* __ASSEMBLY__ */
+
+/* prep registers for L2 */
+#define CACHECRBA       0x80000823      /* Cache configuration register address */
+#define L2CACHE_MASK	0x03	/* Mask for 2 L2 Cache bits */
+#define L2CACHE_512KB	0x00	/* 512KB */
+#define L2CACHE_256KB	0x01	/* 256KB */
+#define L2CACHE_1MB	0x02	/* 1MB */
+#define L2CACHE_NONE	0x03	/* NONE */
+#define L2CACHE_PARITY  0x08    /* Mask for L2 Cache Parity Protected bit */
+
+#ifdef CONFIG_8xx
+/* Cache control on the MPC8xx is provided through some additional
+ * special purpose registers.
+ */
+#define IC_CST		560	/* Instruction cache control/status */
+#define IC_ADR		561	/* Address needed for some commands */
+#define IC_DAT		562	/* Read-only data register */
+#define DC_CST		568	/* Data cache control/status */
+#define DC_ADR		569	/* Address needed for some commands */
+#define DC_DAT		570	/* Read-only data register */
+
+/* Commands.  Only the first few are available to the instruction cache.
+*/
+#define	IDC_ENABLE	0x02000000	/* Cache enable */
+#define IDC_DISABLE	0x04000000	/* Cache disable */
+#define IDC_LDLCK	0x06000000	/* Load and lock */
+#define IDC_UNLINE	0x08000000	/* Unlock line */
+#define IDC_UNALL	0x0a000000	/* Unlock all */
+#define IDC_INVALL	0x0c000000	/* Invalidate all */
+
+#define DC_FLINE	0x0e000000	/* Flush data cache line */
+#define DC_SFWT		0x01000000	/* Set forced writethrough mode */
+#define DC_CFWT		0x03000000	/* Clear forced writethrough mode */
+#define DC_SLES		0x05000000	/* Set little endian swap mode */
+#define DC_CLES		0x07000000	/* Clear little endian swap mode */
+
+/* Status.
+*/
+#define IDC_ENABLED	0x80000000	/* Cache is enabled */
+#define IDC_CERR1	0x00200000	/* Cache error 1 */
+#define IDC_CERR2	0x00100000	/* Cache error 2 */
+#define IDC_CERR3	0x00080000	/* Cache error 3 */
+
+#define DC_DFWT		0x40000000	/* Data cache is forced write through */
+#define DC_LES		0x20000000	/* Caches are little endian mode */
+#endif /* CONFIG_8xx */
+
+#endif
--- a/include/galileo/core.h
+++ b/include/galileo/core.h
+/* Core.h - Basic core logic functions and definitions */
+
+/* Copyright Galileo Technology. */
+
+/*
+DESCRIPTION
+This header file contains simple read/write macros for addressing
+the SDRAM, devices, GT`s internal registers and PCI (using the PCI`s address
+space). The macros take care of Big/Little endian conversions.
+*/
+
+#ifndef __INCcoreh
+#define __INCcoreh
+
+/* includes */
+#include "gt64260R.h"
+
+extern unsigned int INTERNAL_REG_BASE_ADDR;
+
+/*
+ * GT-6426x variants
+ */
+#define GT_64260	0  /* includes both 64260A and 64260B */
+#define GT_64261	1
+
+#if (CFG_GT_6426x == GT_64260)
+#ifdef CONFIG_ETHER_PORT_MII
+#define GAL_ETH_DEVS 2
+#else
+#define GAL_ETH_DEVS 3
+#endif
+#elif (CFG_GT_6426x == GT_64261)
+#define GAL_ETH_DEVS 2
+#else
+#define GAL_ETH_DEVS 3	/* default to a 64260 */
+#endif
+
+/****************************************/
+/*          GENERAL Definitions			*/
+/****************************************/
+
+#define NO_BIT          0x00000000
+#define BIT0            0x00000001
+#define BIT1            0x00000002
+#define BIT2            0x00000004
+#define BIT3            0x00000008
+#define BIT4            0x00000010
+#define BIT5            0x00000020
+#define BIT6            0x00000040
+#define BIT7            0x00000080
+#define BIT8            0x00000100
+#define BIT9            0x00000200
+#define BIT10           0x00000400
+#define BIT11           0x00000800
+#define BIT12           0x00001000
+#define BIT13           0x00002000
+#define BIT14           0x00004000
+#define BIT15           0x00008000
+#define BIT16           0x00010000
+#define BIT17           0x00020000
+#define BIT18           0x00040000
+#define BIT19           0x00080000
+#define BIT20           0x00100000
+#define BIT21           0x00200000
+#define BIT22           0x00400000
+#define BIT23           0x00800000
+#define BIT24           0x01000000
+#define BIT25           0x02000000
+#define BIT26           0x04000000
+#define BIT27           0x08000000
+#define BIT28           0x10000000
+#define BIT29           0x20000000
+#define BIT30           0x40000000
+#define BIT31           0x80000000
+
+#define _1K             0x00000400
+#define _2K             0x00000800
+#define _4K             0x00001000
+#define _8K             0x00002000
+#define _16K            0x00004000
+#define _32K            0x00008000
+#define _64K            0x00010000
+#define _128K           0x00020000
+#define _256K           0x00040000
+#define _512K           0x00080000
+
+#define _1M             0x00100000
+#define _2M             0x00200000
+#define _3M             0x00300000
+#define _4M             0x00400000
+#define _5M             0x00500000
+#define _6M             0x00600000
+#define _7M             0x00700000
+#define _8M             0x00800000
+#define _9M             0x00900000
+#define _10M            0x00a00000
+#define _11M            0x00b00000
+#define _12M            0x00c00000
+#define _13M            0x00d00000
+#define _14M            0x00e00000
+#define _15M            0x00f00000
+#define _16M            0x01000000
+
+#define _32M            0x02000000
+#define _64M            0x04000000
+#define _128M           0x08000000
+#define _256M           0x10000000
+#define _512M           0x20000000
+
+#define _1G             0x40000000
+#define _2G             0x80000000
+
+typedef enum _bool{false,true} bool;
+
+/* Little to Big endian conversion macros */
+
+#ifdef LE /* Little Endian */
+#define SHORT_SWAP(X) (X)
+#define WORD_SWAP(X) (X)
+#define LONG_SWAP(X) ((l64)(X))
+
+#else    /* Big Endian */
+#define SHORT_SWAP(X) ((X <<8 ) | (X >> 8))
+
+#define WORD_SWAP(X) (((X)&0xff)<<24)+      \
+                    (((X)&0xff00)<<8)+      \
+                    (((X)&0xff0000)>>8)+    \
+                    (((X)&0xff000000)>>24)
+
+#define LONG_SWAP(X) ( (l64) (((X)&0xffULL)<<56)+               \
+                            (((X)&0xff00ULL)<<40)+              \
+                            (((X)&0xff0000ULL)<<24)+            \
+                            (((X)&0xff000000ULL)<<8)+           \
+                            (((X)&0xff00000000ULL)>>8)+         \
+                            (((X)&0xff0000000000ULL)>>24)+      \
+                            (((X)&0xff000000000000ULL)>>40)+    \
+                            (((X)&0xff00000000000000ULL)>>56))
+
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+/* Those two definitions were defined to be compatible with MIPS */
+#define NONE_CACHEABLE		0x00000000
+#define CACHEABLE			0x00000000
+
+/* 750 cache line */
+#define CACHE_LINE_SIZE 32
+#define CACHELINE_MASK_BITS (CACHE_LINE_SIZE - 1)
+#define CACHELINE_ROUNDUP(A) (((A)+CACHELINE_MASK_BITS) & ~CACHELINE_MASK_BITS)
+
+/* Read/Write to/from GT`s internal registers */
+#define GT_REG_READ(offset, pData)                                          \
+*pData = ( *((volatile unsigned int *)(NONE_CACHEABLE |                     \
+                INTERNAL_REG_BASE_ADDR | (offset))) ) ;                                              \
+*pData = WORD_SWAP(*pData)
+
+#define GTREGREAD(offset)                                                   \
+         (WORD_SWAP( *((volatile unsigned int *)(NONE_CACHEABLE |            \
+                   INTERNAL_REG_BASE_ADDR | (offset))) ))
+
+#define GT_REG_WRITE(offset, data)                                          \
+*((unsigned int *)( INTERNAL_REG_BASE_ADDR | (offset))) =                   \
+                    WORD_SWAP(data)
+
+/* Write 32/16/8 bit */
+#define WRITE_CHAR(address, data)                                           \
+        *((unsigned char *)(address)) = data
+#define WRITE_SHORT(address, data)                                          \
+        *((unsigned short *)(address)) = data
+#define WRITE_WORD(address, data)                                           \
+        *((unsigned int *)(address)) = data
+
+/* Read 32/16/8 bits - returns data in variable. */
+#define READ_CHAR(address, pData)                                           \
+        *pData = *((volatile unsigned char *)(address))
+
+#define READ_SHORT(address, pData)                                          \
+        *pData = *((volatile unsigned short *)(address))
+
+#define READ_WORD(address, pData)                                           \
+        *pData = *((volatile unsigned int *)(address))
+
+/* Read 32/16/8 bit - returns data direct. */
+#define READCHAR(address)                                                   \
+        *((volatile unsigned char *)((address) | NONE_CACHEABLE))
+
+#define READSHORT(address)                                                  \
+        *((volatile unsigned short *)((address) | NONE_CACHEABLE))
+
+#define READWORD(address)                                                   \
+        *((volatile unsigned int *)((address) | NONE_CACHEABLE))
+
+/* Those two Macros were defined to be compatible with MIPS */
+#define VIRTUAL_TO_PHY(x)    (((unsigned int)x) & 0xffffffff)
+#define PHY_TO_VIRTUAL(x)    (((unsigned int)x) | NONE_CACHEABLE)
+
+/*  SET_REG_BITS(regOffset,bits) -
+   gets register offset and bits: a 32bit value. It set to logic '1' in the
+   internal register the bits which given as an input example:
+   SET_REG_BITS(0x840,BIT3 | BIT24 | BIT30) - set bits: 3,24 and 30 to logic
+   '1' in register 0x840 while the other bits stays as is. */
+#define SET_REG_BITS(regOffset,bits) \
+        *(unsigned int*)(NONE_CACHEABLE | INTERNAL_REG_BASE_ADDR |  \
+        regOffset) |= (unsigned int)WORD_SWAP(bits)
+
+/*  RESET_REG_BITS(regOffset,bits) -
+   gets register offset and bits: a 32bit value. It set to logic '0' in the
+   internal register the bits which given as an input example:
+   RESET_REG_BITS(0x840,BIT3 | BIT24 | BIT30) - set bits: 3,24 and 30 to logic
+   '0' in register 0x840 while the other bits stays as is. */
+#define RESET_REG_BITS(regOffset,bits) \
+        *(unsigned int*)(NONE_CACHEABLE | INTERNAL_REG_BASE_ADDR   \
+        | regOffset) &= ~( (unsigned int)WORD_SWAP(bits) )
+
+#endif /* __INCcoreh */