linux-vybrid_public/arch/blackfin/include/asm/cplb.h

/*
 * File:         include/asm-blackfin/cplb.h
 * Based on:     include/asm-blackfin/mach-bf537/bf537.h
 * Author:       Robin Getz <rgetz@blackfin.uclinux.org>
 *
 * Created:      2000
 * Description:  Common CPLB definitions for CPLB init
 *
 * Modified:
 *               Copyright 2004-2007 Analog Devices Inc.
 *
 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 *
 * 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, see the file COPYING, or write
 * to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef _CPLB_H
#define _CPLB_H

#include <mach/anomaly.h>

#define SDRAM_IGENERIC    (CPLB_L1_CHBL | CPLB_USER_RD | CPLB_VALID | CPLB_PORTPRIO)
#define SDRAM_IKERNEL     (SDRAM_IGENERIC | CPLB_LOCK)
#define L1_IMEMORY        (               CPLB_USER_RD | CPLB_VALID | CPLB_LOCK)
#define SDRAM_INON_CHBL   (               CPLB_USER_RD | CPLB_VALID)

#if ANOMALY_05000158
#define ANOMALY_05000158_WORKAROUND             0x200
#else
#define ANOMALY_05000158_WORKAROUND             0x0
#endif

#define CPLB_COMMON	(CPLB_DIRTY | CPLB_SUPV_WR | CPLB_USER_WR | CPLB_USER_RD | CPLB_VALID | ANOMALY_05000158_WORKAROUND)

#ifdef CONFIG_BFIN_EXTMEM_WRITEBACK
#define SDRAM_DGENERIC   (CPLB_L1_CHBL | CPLB_COMMON)
#elif defined(CONFIG_BFIN_EXTMEM_WRITETHROUGH)
#define SDRAM_DGENERIC   (CPLB_L1_CHBL | CPLB_WT | CPLB_L1_AOW  | CPLB_COMMON)
#else
#define SDRAM_DGENERIC   (CPLB_COMMON)
#endif

#define SDRAM_DNON_CHBL  (CPLB_COMMON)
#define SDRAM_EBIU       (CPLB_COMMON)
#define SDRAM_OOPS       (CPLB_VALID | ANOMALY_05000158_WORKAROUND | CPLB_LOCK | CPLB_DIRTY)

#define L1_DMEMORY       (CPLB_LOCK | CPLB_COMMON)

#ifdef CONFIG_SMP
#define L2_ATTR          (INITIAL_T | I_CPLB | D_CPLB)
#define L2_IMEMORY       (CPLB_COMMON | PAGE_SIZE_1MB)
#define L2_DMEMORY       (CPLB_LOCK | CPLB_COMMON | PAGE_SIZE_1MB)

#else
#define L2_ATTR          (INITIAL_T | SWITCH_T | I_CPLB | D_CPLB)
# if defined(CONFIG_BFIN_L2_ICACHEABLE)
# define L2_IMEMORY      (CPLB_L1_CHBL | CPLB_USER_RD | CPLB_VALID | PAGE_SIZE_1MB)
# else
# define L2_IMEMORY      (               CPLB_USER_RD | CPLB_VALID | PAGE_SIZE_1MB)
# endif

# if defined(CONFIG_BFIN_L2_WRITEBACK)
# define L2_DMEMORY      (CPLB_L1_CHBL | CPLB_COMMON | PAGE_SIZE_1MB)
# elif defined(CONFIG_BFIN_L2_WRITETHROUGH)
# define L2_DMEMORY      (CPLB_L1_CHBL | CPLB_WT | CPLB_L1_AOW | CPLB_COMMON | PAGE_SIZE_1MB)
# else
# define L2_DMEMORY      (CPLB_COMMON | PAGE_SIZE_1MB)
# endif
#endif /* CONFIG_SMP */

#define SIZE_1K 0x00000400      /* 1K */
#define SIZE_4K 0x00001000      /* 4K */
#define SIZE_1M 0x00100000      /* 1M */
#define SIZE_4M 0x00400000      /* 4M */

#define MAX_CPLBS 16

#define CPLB_ENABLE_ICACHE_P	0
#define CPLB_ENABLE_DCACHE_P	1
#define CPLB_ENABLE_DCACHE2_P	2
#define CPLB_ENABLE_CPLBS_P	3	/* Deprecated! */
#define CPLB_ENABLE_ICPLBS_P	4
#define CPLB_ENABLE_DCPLBS_P	5

#define CPLB_ENABLE_ICACHE	(1<<CPLB_ENABLE_ICACHE_P)
#define CPLB_ENABLE_DCACHE	(1<<CPLB_ENABLE_DCACHE_P)
#define CPLB_ENABLE_DCACHE2	(1<<CPLB_ENABLE_DCACHE2_P)
#define CPLB_ENABLE_CPLBS	(1<<CPLB_ENABLE_CPLBS_P)
#define CPLB_ENABLE_ICPLBS	(1<<CPLB_ENABLE_ICPLBS_P)
#define CPLB_ENABLE_DCPLBS	(1<<CPLB_ENABLE_DCPLBS_P)
#define CPLB_ENABLE_ANY_CPLBS	CPLB_ENABLE_CPLBS | \
				CPLB_ENABLE_ICPLBS | \
				CPLB_ENABLE_DCPLBS

#define CPLB_RELOADED		0x0000
#define CPLB_NO_UNLOCKED	0x0001
#define CPLB_NO_ADDR_MATCH	0x0002
#define CPLB_PROT_VIOL		0x0003
#define CPLB_UNKNOWN_ERR	0x0004

#define CPLB_DEF_CACHE		CPLB_L1_CHBL | CPLB_WT
#define CPLB_CACHE_ENABLED	CPLB_L1_CHBL | CPLB_DIRTY

#define CPLB_I_PAGE_MGMT	CPLB_LOCK | CPLB_VALID
#define CPLB_D_PAGE_MGMT	CPLB_LOCK | CPLB_ALL_ACCESS | CPLB_VALID
#define CPLB_DNOCACHE		CPLB_ALL_ACCESS | CPLB_VALID
#define CPLB_DDOCACHE		CPLB_DNOCACHE | CPLB_DEF_CACHE
#define CPLB_INOCACHE   	CPLB_USER_RD | CPLB_VALID
#define CPLB_IDOCACHE   	CPLB_INOCACHE | CPLB_L1_CHBL

#define FAULT_RW        (1 << 16)
#define FAULT_USERSUPV  (1 << 17)
#define FAULT_CPLBBITS  0x0000ffff

#ifndef __ASSEMBLY__

static inline void _disable_cplb(u32 mmr, u32 mask)
{
	u32 ctrl = bfin_read32(mmr) & ~mask;
	/* CSYNC to ensure load store ordering */
	__builtin_bfin_csync();
	bfin_write32(mmr, ctrl);
	__builtin_bfin_ssync();
}
static inline void disable_cplb(u32 mmr, u32 mask)
{
	u32 ctrl = bfin_read32(mmr) & ~mask;
	CSYNC();
	bfin_write32(mmr, ctrl);
	SSYNC();
}
#define _disable_dcplb() _disable_cplb(DMEM_CONTROL, ENDCPLB)
#define  disable_dcplb()  disable_cplb(DMEM_CONTROL, ENDCPLB)
#define _disable_icplb() _disable_cplb(IMEM_CONTROL, ENICPLB)
#define  disable_icplb()  disable_cplb(IMEM_CONTROL, ENICPLB)

static inline void _enable_cplb(u32 mmr, u32 mask)
{
	u32 ctrl = bfin_read32(mmr) | mask;
	/* CSYNC to ensure load store ordering */
	__builtin_bfin_csync();
	bfin_write32(mmr, ctrl);
	__builtin_bfin_ssync();
}
static inline void enable_cplb(u32 mmr, u32 mask)
{
	u32 ctrl = bfin_read32(mmr) | mask;
	CSYNC();
	bfin_write32(mmr, ctrl);
	SSYNC();
}
#define _enable_dcplb()  _enable_cplb(DMEM_CONTROL, ENDCPLB)
#define  enable_dcplb()   enable_cplb(DMEM_CONTROL, ENDCPLB)
#define _enable_icplb()  _enable_cplb(IMEM_CONTROL, ENICPLB)
#define  enable_icplb()   enable_cplb(IMEM_CONTROL, ENICPLB)

#endif		/* __ASSEMBLY__ */

#endif		/* _CPLB_H */