Commit | Line | Data |
---|---|---|
f8ef2705 PM |
1 | #ifndef __ASM_POWERPC_PCI_H |
2 | #define __ASM_POWERPC_PCI_H | |
1da177e4 LT |
3 | #ifdef __KERNEL__ |
4 | ||
5 | /* | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/types.h> | |
13 | #include <linux/slab.h> | |
14 | #include <linux/string.h> | |
15 | #include <linux/dma-mapping.h> | |
16 | ||
17 | #include <asm/machdep.h> | |
18 | #include <asm/scatterlist.h> | |
19 | #include <asm/io.h> | |
20 | #include <asm/prom.h> | |
f8ef2705 | 21 | #include <asm/pci-bridge.h> |
1da177e4 LT |
22 | |
23 | #include <asm-generic/pci-dma-compat.h> | |
24 | ||
25 | #define PCIBIOS_MIN_IO 0x1000 | |
26 | #define PCIBIOS_MIN_MEM 0x10000000 | |
27 | ||
28 | struct pci_dev; | |
29 | ||
f8ef2705 PM |
30 | /* Values for the `which' argument to sys_pciconfig_iobase syscall. */ |
31 | #define IOBASE_BRIDGE_NUMBER 0 | |
32 | #define IOBASE_MEMORY 1 | |
33 | #define IOBASE_IO 2 | |
34 | #define IOBASE_ISA_IO 3 | |
35 | #define IOBASE_ISA_MEM 4 | |
36 | ||
37 | /* | |
38 | * Set this to 1 if you want the kernel to re-assign all PCI | |
3fd94c6b | 39 | * bus numbers (don't do that on ppc64 yet !) |
f8ef2705 | 40 | */ |
fc3fb71c BH |
41 | #define pcibios_assign_all_busses() (ppc_pci_flags & \ |
42 | PPC_PCI_REASSIGN_ALL_BUS) | |
1da177e4 | 43 | #define pcibios_scan_all_fns(a, b) 0 |
1da177e4 LT |
44 | |
45 | static inline void pcibios_set_master(struct pci_dev *dev) | |
46 | { | |
47 | /* No special bus mastering setup handling */ | |
48 | } | |
49 | ||
c9c3e457 | 50 | static inline void pcibios_penalize_isa_irq(int irq, int active) |
1da177e4 LT |
51 | { |
52 | /* We don't do dynamic PCI IRQ allocation */ | |
53 | } | |
54 | ||
55 | #define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ | |
56 | static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) | |
57 | { | |
58 | if (ppc_md.pci_get_legacy_ide_irq) | |
59 | return ppc_md.pci_get_legacy_ide_irq(dev, channel); | |
60 | return channel ? 15 : 14; | |
61 | } | |
62 | ||
f8ef2705 | 63 | #ifdef CONFIG_PPC64 |
edb2d97e MW |
64 | |
65 | /* | |
66 | * We want to avoid touching the cacheline size or MWI bit. | |
67 | * pSeries firmware sets the cacheline size (which is not the cpu cacheline | |
68 | * size in all cases) and hardware treats MWI the same as memory write. | |
69 | */ | |
70 | #define PCI_DISABLE_MWI | |
1da177e4 | 71 | |
98747770 | 72 | #ifdef CONFIG_PCI |
98747770 | 73 | extern void set_pci_dma_ops(struct dma_mapping_ops *dma_ops); |
57190708 | 74 | extern struct dma_mapping_ops *get_pci_dma_ops(void); |
98747770 | 75 | |
e24c2d96 DM |
76 | static inline void pci_dma_burst_advice(struct pci_dev *pdev, |
77 | enum pci_dma_burst_strategy *strat, | |
78 | unsigned long *strategy_parameter) | |
79 | { | |
80 | unsigned long cacheline_size; | |
81 | u8 byte; | |
82 | ||
83 | pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte); | |
84 | if (byte == 0) | |
85 | cacheline_size = 1024; | |
86 | else | |
87 | cacheline_size = (int) byte * 4; | |
88 | ||
89 | *strat = PCI_DMA_BURST_MULTIPLE; | |
90 | *strategy_parameter = cacheline_size; | |
91 | } | |
98747770 SR |
92 | #else /* CONFIG_PCI */ |
93 | #define set_pci_dma_ops(d) | |
57190708 | 94 | #define get_pci_dma_ops() NULL |
bb4a61b6 | 95 | #endif |
e24c2d96 | 96 | |
f8ef2705 PM |
97 | #else /* 32-bit */ |
98 | ||
99 | #ifdef CONFIG_PCI | |
100 | static inline void pci_dma_burst_advice(struct pci_dev *pdev, | |
101 | enum pci_dma_burst_strategy *strat, | |
102 | unsigned long *strategy_parameter) | |
103 | { | |
104 | *strat = PCI_DMA_BURST_INFINITY; | |
105 | *strategy_parameter = ~0UL; | |
106 | } | |
107 | #endif | |
f8ef2705 PM |
108 | #endif /* CONFIG_PPC64 */ |
109 | ||
5516b540 KG |
110 | extern int pci_domain_nr(struct pci_bus *bus); |
111 | ||
fa462f2d BH |
112 | /* Decide whether to display the domain number in /proc */ |
113 | extern int pci_proc_domain(struct pci_bus *bus); | |
114 | ||
115 | ||
1da177e4 LT |
116 | struct vm_area_struct; |
117 | /* Map a range of PCI memory or I/O space for a device into user space */ | |
118 | int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma, | |
119 | enum pci_mmap_state mmap_state, int write_combine); | |
120 | ||
121 | /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */ | |
122 | #define HAVE_PCI_MMAP 1 | |
123 | ||
1d4454e7 RD |
124 | #if defined(CONFIG_PPC64) || defined(CONFIG_NOT_COHERENT_CACHE) |
125 | /* | |
126 | * For 64-bit kernels, pci_unmap_{single,page} is not a nop. | |
127 | * For 32-bit non-coherent kernels, pci_dma_sync_single_for_cpu() and | |
128 | * so on are not nops. | |
129 | * and thus... | |
130 | */ | |
1da177e4 LT |
131 | #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \ |
132 | dma_addr_t ADDR_NAME; | |
133 | #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \ | |
134 | __u32 LEN_NAME; | |
135 | #define pci_unmap_addr(PTR, ADDR_NAME) \ | |
136 | ((PTR)->ADDR_NAME) | |
137 | #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \ | |
138 | (((PTR)->ADDR_NAME) = (VAL)) | |
139 | #define pci_unmap_len(PTR, LEN_NAME) \ | |
140 | ((PTR)->LEN_NAME) | |
141 | #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \ | |
142 | (((PTR)->LEN_NAME) = (VAL)) | |
143 | ||
1d4454e7 RD |
144 | #else /* 32-bit && coherent */ |
145 | ||
146 | /* pci_unmap_{page,single} is a nop so... */ | |
147 | #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) | |
148 | #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) | |
149 | #define pci_unmap_addr(PTR, ADDR_NAME) (0) | |
150 | #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) | |
151 | #define pci_unmap_len(PTR, LEN_NAME) (0) | |
152 | #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) | |
153 | ||
154 | #endif /* CONFIG_PPC64 || CONFIG_NOT_COHERENT_CACHE */ | |
155 | ||
156 | #ifdef CONFIG_PPC64 | |
157 | ||
f8ef2705 PM |
158 | /* The PCI address space does not equal the physical memory address |
159 | * space (we have an IOMMU). The IDE and SCSI device layers use | |
1da177e4 LT |
160 | * this boolean for bounce buffer decisions. |
161 | */ | |
162 | #define PCI_DMA_BUS_IS_PHYS (0) | |
f8ef2705 PM |
163 | |
164 | #else /* 32-bit */ | |
165 | ||
166 | /* The PCI address space does equal the physical memory | |
167 | * address space (no IOMMU). The IDE and SCSI device layers use | |
168 | * this boolean for bounce buffer decisions. | |
169 | */ | |
170 | #define PCI_DMA_BUS_IS_PHYS (1) | |
171 | ||
f8ef2705 | 172 | #endif /* CONFIG_PPC64 */ |
1d4454e7 | 173 | |
f8ef2705 PM |
174 | extern void pcibios_resource_to_bus(struct pci_dev *dev, |
175 | struct pci_bus_region *region, | |
1da177e4 LT |
176 | struct resource *res); |
177 | ||
f8ef2705 PM |
178 | extern void pcibios_bus_to_resource(struct pci_dev *dev, |
179 | struct resource *res, | |
43c34735 DB |
180 | struct pci_bus_region *region); |
181 | ||
f8ef2705 PM |
182 | static inline struct resource *pcibios_select_root(struct pci_dev *pdev, |
183 | struct resource *res) | |
085ae41f DM |
184 | { |
185 | struct resource *root = NULL; | |
186 | ||
187 | if (res->flags & IORESOURCE_IO) | |
188 | root = &ioport_resource; | |
189 | if (res->flags & IORESOURCE_MEM) | |
190 | root = &iomem_resource; | |
191 | ||
192 | return root; | |
193 | } | |
194 | ||
12d04eef BH |
195 | extern void pcibios_setup_new_device(struct pci_dev *dev); |
196 | ||
facf0787 LV |
197 | extern void pcibios_claim_one_bus(struct pci_bus *b); |
198 | ||
3fd94c6b BH |
199 | extern void pcibios_resource_survey(void); |
200 | ||
1da177e4 LT |
201 | extern struct pci_controller *init_phb_dynamic(struct device_node *dn); |
202 | ||
ead83717 JR |
203 | extern struct pci_dev *of_create_pci_dev(struct device_node *node, |
204 | struct pci_bus *bus, int devfn); | |
205 | ||
206 | extern void of_scan_pci_bridge(struct device_node *node, | |
207 | struct pci_dev *dev); | |
208 | ||
209 | extern void of_scan_bus(struct device_node *node, struct pci_bus *bus); | |
210 | ||
1da177e4 LT |
211 | extern int pci_read_irq_line(struct pci_dev *dev); |
212 | ||
1da177e4 LT |
213 | struct file; |
214 | extern pgprot_t pci_phys_mem_access_prot(struct file *file, | |
8b150478 | 215 | unsigned long pfn, |
1da177e4 LT |
216 | unsigned long size, |
217 | pgprot_t prot); | |
218 | ||
2311b1f2 ME |
219 | #define HAVE_ARCH_PCI_RESOURCE_TO_USER |
220 | extern void pci_resource_to_user(const struct pci_dev *dev, int bar, | |
221 | const struct resource *rsrc, | |
e31dd6e4 | 222 | resource_size_t *start, resource_size_t *end); |
1da177e4 | 223 | |
bf5e2ba2 BH |
224 | extern void pcibios_do_bus_setup(struct pci_bus *bus); |
225 | extern void pcibios_fixup_of_probed_bus(struct pci_bus *bus); | |
226 | ||
1da177e4 | 227 | #endif /* __KERNEL__ */ |
f8ef2705 | 228 | #endif /* __ASM_POWERPC_PCI_H */ |