[net-next-2.6.git] / arch / arm / plat-omap / include / mach / memory.h

/*
 * arch/arm/plat-omap/include/mach/memory.h
 *
 * Memory map for OMAP-1510 and 1610
 *
 * Copyright (C) 2000 RidgeRun, Inc.
 * Author: Greg Lonnon <glonnon@ridgerun.com>
 *
 * This file was derived from arch/arm/mach-intergrator/include/mach/memory.h
 * Copyright (C) 1999 ARM Limited
 *
 * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * 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.,
 * 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H

/*
 * Physical DRAM offset.
 */
#if defined(CONFIG_ARCH_OMAP1)
#define PHYS_OFFSET		UL(0x10000000)
#elif defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
#define PHYS_OFFSET		UL(0x80000000)
#endif

/*
 * Bus address is physical address, except for OMAP-1510 Local Bus.
 * OMAP-1510 bus address is translated into a Local Bus address if the
 * OMAP bus type is lbus. We do the address translation based on the
 * device overriding the defaults used in the dma-mapping API.
 * Note that the is_lbus_device() test is not very efficient on 1510
 * because of the strncmp().
 */
#ifdef CONFIG_ARCH_OMAP15XX

/*
 * OMAP-1510 Local Bus address offset
 */
#define OMAP1510_LB_OFFSET	UL(0x30000000)

#define virt_to_lbus(x)		((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET)
#define lbus_to_virt(x)		((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET)
#define is_lbus_device(dev)	(cpu_is_omap15xx() && dev && (strncmp(dev->bus_id, "ohci", 4) == 0))

#define __arch_page_to_dma(dev, page)	({is_lbus_device(dev) ? \
					(dma_addr_t)virt_to_lbus(page_address(page)) : \
					(dma_addr_t)__virt_to_phys(page_address(page));})

#define __arch_dma_to_virt(dev, addr)	({ (void *) (is_lbus_device(dev) ? \
						lbus_to_virt(addr) : \
						__phys_to_virt(addr)); })

#define __arch_virt_to_dma(dev, addr)	({ unsigned long __addr = (unsigned long)(addr); \
					   (dma_addr_t) (is_lbus_device(dev) ? \
						virt_to_lbus(__addr) : \
						__virt_to_phys(__addr)); })

#endif	/* CONFIG_ARCH_OMAP15XX */

/* Override the ARM default */
#ifdef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE

#if (CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE == 0)
#undef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE
#define CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE 2
#endif

#define CONSISTENT_DMA_SIZE \
	(((CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE + 1) & ~1) * 1024 * 1024)

#endif

#endif
Commit	Line	Data
1da177e4	1	/*
a09e64fb	2	* arch/arm/plat-omap/include/mach/memory.h
1da177e4 LT	3	*
	4	* Memory map for OMAP-1510 and 1610
	5	*
	6	* Copyright (C) 2000 RidgeRun, Inc.
	7	* Author: Greg Lonnon <glonnon@ridgerun.com>
	8	*
a09e64fb	9	* This file was derived from arch/arm/mach-intergrator/include/mach/memory.h
1da177e4 LT	10	* Copyright (C) 1999 ARM Limited
	11	*
	12	* This program is free software; you can redistribute it and/or modify it
	13	* under the terms of the GNU General Public License as published by the
	14	* Free Software Foundation; either version 2 of the License, or (at your
	15	* option) any later version.
	16	*
	17	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
	19	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
	20	* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
	23	* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
	24	* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	27	*
	28	* You should have received a copy of the GNU General Public License along
	29	* with this program; if not, write to the Free Software Foundation, Inc.,
	30	* 675 Mass Ave, Cambridge, MA 02139, USA.
	31	*/
	32
	33	#ifndef __ASM_ARCH_MEMORY_H
	34	#define __ASM_ARCH_MEMORY_H
	35
	36	/*
	37	* Physical DRAM offset.
	38	*/
9839c6b8	39	#if defined(CONFIG_ARCH_OMAP1)
f09b9979	40	#define PHYS_OFFSET UL(0x10000000)
cc26b3b0	41	#elif defined(CONFIG_ARCH_OMAP2) \|\| defined(CONFIG_ARCH_OMAP3)
f09b9979	42	#define PHYS_OFFSET UL(0x80000000)
9839c6b8	43	#endif
1da177e4	44
1da177e4 LT	45	/*
1da177e4 LT	46	* Bus address is physical address, except for OMAP-1510 Local Bus.
1da177e4 LT	47	* OMAP-1510 bus address is translated into a Local Bus address if the
	48	* OMAP bus type is lbus. We do the address translation based on the
	49	* device overriding the defaults used in the dma-mapping API.
	50	* Note that the is_lbus_device() test is not very efficient on 1510
	51	* because of the strncmp().
	52	*/
9ad5897c	53	#ifdef CONFIG_ARCH_OMAP15XX
1da177e4	54
9839c6b8 TL	55	/*
	56	* OMAP-1510 Local Bus address offset
	57	*/
f09b9979	58	#define OMAP1510_LB_OFFSET UL(0x30000000)
9839c6b8	59
1da177e4 LT	60	#define virt_to_lbus(x) ((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET)
1da177e4 LT	61	#define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET)
99c658a6	62	#define is_lbus_device(dev) (cpu_is_omap15xx() && dev && (strncmp(dev->bus_id, "ohci", 4) == 0))
1da177e4 LT	63
	64	#define __arch_page_to_dma(dev, page) ({is_lbus_device(dev) ? \
	65	(dma_addr_t)virt_to_lbus(page_address(page)) : \
b5ee9002	66	(dma_addr_t)__virt_to_phys(page_address(page));})
1da177e4	67
98ed7d4b RK	68	#define __arch_dma_to_virt(dev, addr) ({ (void *) (is_lbus_device(dev) ? \
98ed7d4b RK	69	lbus_to_virt(addr) : \
b5ee9002	70	__phys_to_virt(addr)); })
98ed7d4b RK	71
	72	#define __arch_virt_to_dma(dev, addr) ({ unsigned long __addr = (unsigned long)(addr); \
	73	(dma_addr_t) (is_lbus_device(dev) ? \
	74	virt_to_lbus(__addr) : \
b5ee9002	75	__virt_to_phys(__addr)); })
1da177e4	76
9ad5897c	77	#endif /* CONFIG_ARCH_OMAP15XX */
1da177e4	78
f4e4c324 TL	79	/* Override the ARM default */
	80	#ifdef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE
	81
	82	#if (CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE == 0)
	83	#undef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE
	84	#define CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE 2
	85	#endif
	86
	87	#define CONSISTENT_DMA_SIZE \
	88	(((CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE + 1) & ~1) * 1024 * 1024)
	89
	90	#endif
	91
1da177e4 LT	92	#endif
1da177e4 LT	93