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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 | /* |
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) |
61 | #define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET) | |
1d559e29 | 62 | #define is_lbus_device(dev) (cpu_is_omap15xx() && dev && (strncmp(dev_name(dev), "ohci", 4) == 0)) |
1da177e4 | 63 | |
58edb515 NP |
64 | #define __arch_page_to_dma(dev, page) \ |
65 | ({ dma_addr_t __dma = page_to_phys(page); \ | |
66 | if (is_lbus_device(dev)) \ | |
67 | __dma = __dma - PHYS_OFFSET + OMAP1510_LB_OFFSET; \ | |
68 | __dma; }) | |
1da177e4 | 69 | |
98ed7d4b RK |
70 | #define __arch_dma_to_virt(dev, addr) ({ (void *) (is_lbus_device(dev) ? \ |
71 | lbus_to_virt(addr) : \ | |
b5ee9002 | 72 | __phys_to_virt(addr)); }) |
98ed7d4b RK |
73 | |
74 | #define __arch_virt_to_dma(dev, addr) ({ unsigned long __addr = (unsigned long)(addr); \ | |
75 | (dma_addr_t) (is_lbus_device(dev) ? \ | |
76 | virt_to_lbus(__addr) : \ | |
b5ee9002 | 77 | __virt_to_phys(__addr)); }) |
1da177e4 | 78 | |
9ad5897c | 79 | #endif /* CONFIG_ARCH_OMAP15XX */ |
1da177e4 | 80 | |
f4e4c324 TL |
81 | /* Override the ARM default */ |
82 | #ifdef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE | |
83 | ||
84 | #if (CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE == 0) | |
85 | #undef CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE | |
86 | #define CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE 2 | |
87 | #endif | |
88 | ||
89 | #define CONSISTENT_DMA_SIZE \ | |
90 | (((CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE + 1) & ~1) * 1024 * 1024) | |
91 | ||
92 | #endif | |
93 | ||
1da177e4 LT |
94 | #endif |
95 |