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1da177e4 LT |
1 | /* |
2 | * linux/include/asm-arm/arch-omap/memory.h | |
3 | * | |
4 | * Memory map for OMAP-1510 and 1610 | |
5 | * | |
6 | * Copyright (C) 2000 RidgeRun, Inc. | |
7 | * Author: Greg Lonnon <glonnon@ridgerun.com> | |
8 | * | |
9 | * This file was derived from linux/include/asm-arm/arch-intergrator/memory.h | |
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 | */ | |
39 | #define PHYS_OFFSET (0x10000000UL) | |
40 | ||
41 | /* | |
42 | * OMAP-1510 Local Bus address offset | |
43 | */ | |
44 | #define OMAP1510_LB_OFFSET (0x30000000UL) | |
45 | ||
46 | /* | |
47 | * Conversion between SDRAM and fake PCI bus, used by USB | |
48 | * NOTE: Physical address must be converted to Local Bus address | |
49 | * on OMAP-1510 only | |
50 | */ | |
51 | ||
52 | /* | |
53 | * Bus address is physical address, except for OMAP-1510 Local Bus. | |
54 | */ | |
55 | #define __virt_to_bus(x) __virt_to_phys(x) | |
56 | #define __bus_to_virt(x) __phys_to_virt(x) | |
57 | ||
58 | /* | |
59 | * OMAP-1510 bus address is translated into a Local Bus address if the | |
60 | * OMAP bus type is lbus. We do the address translation based on the | |
61 | * device overriding the defaults used in the dma-mapping API. | |
62 | * Note that the is_lbus_device() test is not very efficient on 1510 | |
63 | * because of the strncmp(). | |
64 | */ | |
65 | #ifdef CONFIG_ARCH_OMAP1510 | |
66 | ||
67 | #define virt_to_lbus(x) ((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET) | |
68 | #define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET) | |
69 | #define is_lbus_device(dev) (cpu_is_omap1510() && dev && (strncmp(dev->bus_id, "ohci", 4) == 0)) | |
70 | ||
71 | #define __arch_page_to_dma(dev, page) ({is_lbus_device(dev) ? \ | |
72 | (dma_addr_t)virt_to_lbus(page_address(page)) : \ | |
73 | (dma_addr_t)__virt_to_bus(page_address(page));}) | |
74 | ||
75 | #define __arch_dma_to_virt(dev, addr) ({is_lbus_device(dev) ? \ | |
76 | lbus_to_virt(addr) : \ | |
77 | __bus_to_virt(addr);}) | |
78 | ||
79 | #define __arch_virt_to_dma(dev, addr) ({is_lbus_device(dev) ? \ | |
80 | virt_to_lbus(addr) : \ | |
81 | __virt_to_bus(addr);}) | |
82 | ||
83 | #endif /* CONFIG_ARCH_OMAP1510 */ | |
84 | ||
85 | #define PHYS_TO_NID(addr) (0) | |
86 | #endif | |
87 |