Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-tegra/include/mach/io.h |
| 3 | * |
| 4 | * Copyright (C) 2010 Google, Inc. |
| 5 | * |
| 6 | * Author: |
| 7 | * Colin Cross <ccross@google.com> |
| 8 | * Erik Gilling <konkers@google.com> |
| 9 | * |
| 10 | * This software is licensed under the terms of the GNU General Public |
| 11 | * License version 2, as published by the Free Software Foundation, and |
| 12 | * may be copied, distributed, and modified under those terms. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | #ifndef __MACH_TEGRA_IO_H |
| 22 | #define __MACH_TEGRA_IO_H |
| 23 | |
Mike Rapoport | 77ffc14 | 2010-09-27 11:26:33 +0200 | [diff] [blame^] | 24 | #define IO_SPACE_LIMIT 0xffff |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 25 | |
| 26 | /* On TEGRA, many peripherals are very closely packed in |
| 27 | * two 256MB io windows (that actually only use about 64KB |
| 28 | * at the start of each). |
| 29 | * |
| 30 | * We will just map the first 1MB of each window (to minimize |
| 31 | * pt entries needed) and provide a macro to transform physical |
| 32 | * io addresses to an appropriate void __iomem *. |
| 33 | * |
| 34 | */ |
| 35 | |
Colin Cross | c231d69 | 2010-07-27 21:34:38 -0700 | [diff] [blame] | 36 | #define IO_IRAM_PHYS 0x40000000 |
| 37 | #define IO_IRAM_VIRT 0xFE400000 |
| 38 | #define IO_IRAM_SIZE SZ_256K |
| 39 | |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 40 | #define IO_CPU_PHYS 0x50040000 |
| 41 | #define IO_CPU_VIRT 0xFE000000 |
| 42 | #define IO_CPU_SIZE SZ_16K |
| 43 | |
| 44 | #define IO_PPSB_PHYS 0x60000000 |
| 45 | #define IO_PPSB_VIRT 0xFE200000 |
| 46 | #define IO_PPSB_SIZE SZ_1M |
| 47 | |
| 48 | #define IO_APB_PHYS 0x70000000 |
| 49 | #define IO_APB_VIRT 0xFE300000 |
| 50 | #define IO_APB_SIZE SZ_1M |
| 51 | |
| 52 | #define IO_TO_VIRT_BETWEEN(p, st, sz) ((p) >= (st) && (p) < ((st) + (sz))) |
| 53 | #define IO_TO_VIRT_XLATE(p, pst, vst) (((p) - (pst) + (vst))) |
| 54 | |
| 55 | #define IO_TO_VIRT(n) ( \ |
| 56 | IO_TO_VIRT_BETWEEN((n), IO_PPSB_PHYS, IO_PPSB_SIZE) ? \ |
| 57 | IO_TO_VIRT_XLATE((n), IO_PPSB_PHYS, IO_PPSB_VIRT) : \ |
| 58 | IO_TO_VIRT_BETWEEN((n), IO_APB_PHYS, IO_APB_SIZE) ? \ |
| 59 | IO_TO_VIRT_XLATE((n), IO_APB_PHYS, IO_APB_VIRT) : \ |
| 60 | IO_TO_VIRT_BETWEEN((n), IO_CPU_PHYS, IO_CPU_SIZE) ? \ |
| 61 | IO_TO_VIRT_XLATE((n), IO_CPU_PHYS, IO_CPU_VIRT) : \ |
Colin Cross | c231d69 | 2010-07-27 21:34:38 -0700 | [diff] [blame] | 62 | IO_TO_VIRT_BETWEEN((n), IO_IRAM_PHYS, IO_IRAM_SIZE) ? \ |
| 63 | IO_TO_VIRT_XLATE((n), IO_IRAM_PHYS, IO_IRAM_VIRT) : \ |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 64 | 0) |
| 65 | |
| 66 | #ifndef __ASSEMBLER__ |
| 67 | |
| 68 | #define __arch_ioremap(p, s, t) tegra_ioremap(p, s, t) |
| 69 | #define __arch_iounmap(v) tegra_iounmap(v) |
| 70 | |
| 71 | void __iomem *tegra_ioremap(unsigned long phys, size_t size, unsigned int type); |
| 72 | void tegra_iounmap(volatile void __iomem *addr); |
| 73 | |
| 74 | #define IO_ADDRESS(n) ((void __iomem *) IO_TO_VIRT(n)) |
| 75 | |
Mike Rapoport | 77ffc14 | 2010-09-27 11:26:33 +0200 | [diff] [blame^] | 76 | #ifdef CONFIG_TEGRA_PCI |
| 77 | extern void __iomem *tegra_pcie_io_base; |
| 78 | |
| 79 | static inline void __iomem *__io(unsigned long addr) |
| 80 | { |
| 81 | return tegra_pcie_io_base + (addr & IO_SPACE_LIMIT); |
| 82 | } |
| 83 | #else |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 84 | static inline void __iomem *__io(unsigned long addr) |
| 85 | { |
| 86 | return (void __iomem *)addr; |
| 87 | } |
Mike Rapoport | 77ffc14 | 2010-09-27 11:26:33 +0200 | [diff] [blame^] | 88 | #endif |
| 89 | |
Erik Gilling | c5f8006 | 2010-01-21 16:53:02 -0800 | [diff] [blame] | 90 | #define __io(a) __io(a) |
| 91 | #define __mem_pci(a) (a) |
| 92 | |
| 93 | #endif |
| 94 | |
| 95 | #endif |