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16216333 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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2 | /* |
3 | * Support PCI IO workaround | |
4 | * | |
5 | * (C) Copyright 2007-2008 TOSHIBA CORPORATION | |
7cfb62a2 IK |
6 | */ |
7 | ||
8 | #ifndef _IO_WORKAROUNDS_H | |
9 | #define _IO_WORKAROUNDS_H | |
10 | ||
14b4d976 | 11 | #ifdef CONFIG_PPC_IO_WORKAROUNDS |
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12 | #include <linux/io.h> |
13 | #include <asm/pci-bridge.h> | |
14 | ||
15 | /* Bus info */ | |
16 | struct iowa_bus { | |
17 | struct pci_controller *phb; | |
18 | struct ppc_pci_io *ops; | |
19 | void *private; | |
20 | }; | |
21 | ||
cad5cef6 GKH |
22 | void iowa_register_bus(struct pci_controller *, struct ppc_pci_io *, |
23 | int (*)(struct iowa_bus *, void *), void *); | |
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24 | struct iowa_bus *iowa_mem_find_bus(const PCI_IO_ADDR); |
25 | struct iowa_bus *iowa_pio_find_bus(unsigned long); | |
26 | ||
27 | extern struct ppc_pci_io spiderpci_ops; | |
28 | extern int spiderpci_iowa_init(struct iowa_bus *, void *); | |
29 | ||
30 | #define SPIDER_PCI_REG_BASE 0xd000 | |
31 | #define SPIDER_PCI_REG_SIZE 0x1000 | |
32 | #define SPIDER_PCI_VCI_CNTL_STAT 0x0110 | |
33 | #define SPIDER_PCI_DUMMY_READ 0x0810 | |
34 | #define SPIDER_PCI_DUMMY_READ_BASE 0x0814 | |
35 | ||
14b4d976 CL |
36 | #endif |
37 | ||
38 | #if defined(CONFIG_PPC_IO_WORKAROUNDS) && defined(CONFIG_PPC_INDIRECT_MMIO) | |
39 | extern bool io_workaround_inited; | |
40 | ||
41 | static inline bool iowa_is_active(void) | |
42 | { | |
43 | return unlikely(io_workaround_inited); | |
44 | } | |
45 | #else | |
46 | static inline bool iowa_is_active(void) | |
47 | { | |
48 | return false; | |
49 | } | |
50 | #endif | |
51 | ||
52 | void __iomem *iowa_ioremap(phys_addr_t addr, unsigned long size, | |
53 | pgprot_t prot, void *caller); | |
54 | ||
7cfb62a2 | 55 | #endif /* _IO_WORKAROUNDS_H */ |