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d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
b50f1704 G |
2 | /* |
3 | * linux/arch/unicore32/include/mach/memory.h | |
4 | * | |
5 | * Code specific to PKUnity SoC and UniCore ISA | |
6 | * | |
7 | * Copyright (C) 2001-2010 GUAN Xue-tao | |
b50f1704 G |
8 | */ |
9 | #ifndef __MACH_PUV3_MEMORY_H__ | |
10 | #define __MACH_PUV3_MEMORY_H__ | |
11 | ||
12 | #include <mach/hardware.h> | |
13 | ||
14 | /* Physical DRAM offset. */ | |
15 | #define PHYS_OFFSET UL(0x00000000) | |
16 | /* The base address of exception vectors. */ | |
17 | #define VECTORS_BASE UL(0xffff0000) | |
18 | /* The base address of kuser area. */ | |
19 | #define KUSER_BASE UL(0x80000000) | |
20 | ||
21 | #ifdef __ASSEMBLY__ | |
22 | /* The byte offset of the kernel image in RAM from the start of RAM. */ | |
23 | #define KERNEL_IMAGE_START 0x00408000 | |
24 | #endif | |
25 | ||
26 | #if !defined(__ASSEMBLY__) && defined(CONFIG_PCI) | |
27 | ||
28 | void puv3_pci_adjust_zones(unsigned long *size, unsigned long *holes); | |
29 | ||
30 | #define arch_adjust_zones(size, holes) \ | |
31 | puv3_pci_adjust_zones(size, holes) | |
32 | ||
33 | #endif | |
34 | ||
35 | /* | |
36 | * PCI controller in PKUnity-3 masks highest 5-bit for upstream channel, | |
37 | * so we must limit the DMA allocation within 128M physical memory for | |
38 | * supporting PCI devices. | |
39 | */ | |
40 | #define PCI_DMA_THRESHOLD (PHYS_OFFSET + SZ_128M - 1) | |
41 | ||
42 | #define is_pcibus_device(dev) (dev && \ | |
43 | (strncmp(dev->bus->name, "pci", 3) == 0)) | |
44 | ||
1cf46c42 G |
45 | #define __virt_to_pcibus(x) (__virt_to_phys((x) + PKUNITY_PCIAHB_BASE)) |
46 | #define __pcibus_to_virt(x) (__phys_to_virt(x) - PKUNITY_PCIAHB_BASE) | |
b50f1704 G |
47 | |
48 | /* kuser area */ | |
49 | #define KUSER_VECPAGE_BASE (KUSER_BASE + UL(0x3fff0000)) | |
b50f1704 G |
50 | /* kuser_vecpage (0xbfff0000) is ro, and vectors page (0xffff0000) is rw */ |
51 | #define kuser_vecpage_to_vectors(x) ((x) - (KUSER_VECPAGE_BASE) \ | |
52 | + (VECTORS_BASE)) | |
53 | ||
54 | #endif |