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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
b41fc4f8 PM |
2 | #ifndef _ASM_POWERPC_MACHDEP_H |
3 | #define _ASM_POWERPC_MACHDEP_H | |
143a1dec | 4 | #ifdef __KERNEL__ |
1da177e4 | 5 | |
1da177e4 LT |
6 | #include <linux/seq_file.h> |
7 | #include <linux/init.h> | |
8 | #include <linux/dma-mapping.h> | |
93087948 | 9 | #include <linux/export.h> |
1da177e4 LT |
10 | |
11 | #include <asm/setup.h> | |
12 | ||
143a1dec PM |
13 | /* We export this macro for external modules like Alsa to know if |
14 | * ppc_md.feature_call is implemented or not | |
15 | */ | |
16 | #define CONFIG_PPC_HAS_FEATURE_CALLS | |
17 | ||
1da177e4 LT |
18 | struct pt_regs; |
19 | struct pci_bus; | |
20 | struct device_node; | |
21 | struct iommu_table; | |
22 | struct rtc_time; | |
23 | struct file; | |
4c9d2800 | 24 | struct pci_controller; |
3d1229d6 | 25 | struct kimage; |
d82fb31a | 26 | struct pci_host_bridge; |
1da177e4 | 27 | |
1da177e4 | 28 | struct machdep_calls { |
e8222502 | 29 | char *name; |
143a1dec | 30 | #ifdef CONFIG_PPC64 |
7e11580b JB |
31 | #ifdef CONFIG_PM |
32 | void (*iommu_save)(void); | |
33 | void (*iommu_restore)(void); | |
34 | #endif | |
a5d86257 AB |
35 | #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE |
36 | unsigned long (*memory_block_size)(void); | |
37 | #endif | |
e8222502 | 38 | #endif /* CONFIG_PPC64 */ |
1da177e4 | 39 | |
11ddce15 | 40 | void (*dma_set_mask)(struct device *dev, u64 dma_mask); |
5b6e9ff6 | 41 | |
e8222502 | 42 | int (*probe)(void); |
38db7e74 | 43 | void (*setup_arch)(void); /* Optional, may be NULL */ |
1da177e4 | 44 | /* Optional, may be NULL. */ |
d8699e65 PM |
45 | void (*show_cpuinfo)(struct seq_file *m); |
46 | void (*show_percpuinfo)(struct seq_file *m, int i); | |
2299d03a GS |
47 | /* Returns the current operating frequency of "cpu" in Hz */ |
48 | unsigned long (*get_proc_freq)(unsigned int cpu); | |
1da177e4 LT |
49 | |
50 | void (*init_IRQ)(void); | |
9b647a30 | 51 | |
ef24ba70 | 52 | /* Return an irq, or 0 to indicate there are none pending. */ |
35a84c2f | 53 | unsigned int (*get_irq)(void); |
1da177e4 LT |
54 | |
55 | /* PCI stuff */ | |
6ec73343 | 56 | /* Called after allocating resources */ |
1da177e4 | 57 | void (*pcibios_fixup)(void); |
f90bb153 | 58 | void (*pci_irq_fixup)(struct pci_dev *dev); |
d82fb31a KSS |
59 | int (*pcibios_root_bridge_prepare)(struct pci_host_bridge |
60 | *bridge); | |
1da177e4 | 61 | |
5537fcb3 OH |
62 | /* finds all the pci_controllers present at boot */ |
63 | void (*discover_phbs)(void); | |
64 | ||
4c9d2800 BH |
65 | /* To setup PHBs when using automatic OF platform driver for PCI */ |
66 | int (*pci_setup_phb)(struct pci_controller *host); | |
67 | ||
95ec77c0 DA |
68 | void __noreturn (*restart)(char *cmd); |
69 | void __noreturn (*halt)(void); | |
ab9dbf77 | 70 | void (*panic)(char *str); |
1da177e4 | 71 | |
143a1dec PM |
72 | long (*time_init)(void); /* Optional, may be NULL */ |
73 | ||
1da177e4 LT |
74 | int (*set_rtc_time)(struct rtc_time *); |
75 | void (*get_rtc_time)(struct rtc_time *); | |
5bfd6435 | 76 | time64_t (*get_boot_time)(void); |
143a1dec PM |
77 | unsigned char (*rtc_read_val)(int addr); |
78 | void (*rtc_write_val)(int addr, unsigned char val); | |
1da177e4 LT |
79 | |
80 | void (*calibrate_decr)(void); | |
81 | ||
82 | void (*progress)(char *, unsigned short); | |
83 | ||
1da177e4 LT |
84 | /* Interface for platform error logging */ |
85 | void (*log_error)(char *buf, unsigned int err_type, int fatal); | |
86 | ||
35499c01 PM |
87 | unsigned char (*nvram_read_val)(int addr); |
88 | void (*nvram_write_val)(int addr, unsigned char val); | |
1da177e4 LT |
89 | ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); |
90 | ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); | |
91 | ssize_t (*nvram_size)(void); | |
143a1dec | 92 | void (*nvram_sync)(void); |
1da177e4 LT |
93 | |
94 | /* Exception handlers */ | |
c902be71 | 95 | int (*system_reset_exception)(struct pt_regs *regs); |
1da177e4 | 96 | int (*machine_check_exception)(struct pt_regs *regs); |
0869b6fd MS |
97 | int (*handle_hmi_exception)(struct pt_regs *regs); |
98 | ||
99 | /* Early exception handlers called in realmode */ | |
100 | int (*hmi_exception_early)(struct pt_regs *regs); | |
a43c1590 | 101 | long (*machine_check_early)(struct pt_regs *regs); |
1da177e4 | 102 | |
55672ecf MS |
103 | /* Called during machine check exception to retrive fixup address. */ |
104 | bool (*mce_check_early_recovery)(struct pt_regs *regs); | |
105 | ||
1da177e4 LT |
106 | /* Motherboard/chipset features. This is a kind of general purpose |
107 | * hook used to control some machine specific features (like reset | |
108 | * lines, chip power control, etc...). | |
109 | */ | |
110 | long (*feature_call)(unsigned int feature, ...); | |
111 | ||
1da177e4 LT |
112 | /* Get legacy PCI/IDE interrupt mapping */ |
113 | int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); | |
114 | ||
115 | /* Get access protection for /dev/mem */ | |
116 | pgprot_t (*phys_mem_access_prot)(struct file *file, | |
8b150478 | 117 | unsigned long pfn, |
1da177e4 LT |
118 | unsigned long size, |
119 | pgprot_t vma_prot); | |
120 | ||
a0652fc9 PM |
121 | /* |
122 | * Function for waiting for work with reduced power in idle loop; | |
123 | * called with interrupts disabled. | |
124 | */ | |
125 | void (*power_save)(void); | |
126 | ||
143a1dec PM |
127 | /* Function to enable performance monitor counters for this |
128 | platform, called once per cpu. */ | |
180a3362 | 129 | void (*enable_pmcs)(void); |
143a1dec | 130 | |
446957ba | 131 | /* Set DABR for this platform, leave empty for default implementation */ |
4474ef05 MN |
132 | int (*set_dabr)(unsigned long dabr, |
133 | unsigned long dabrx); | |
76032de8 | 134 | |
446957ba | 135 | /* Set DAWR for this platform, leave empty for default implementation */ |
03f3e54a | 136 | int (*set_dawr)(int nr, unsigned long dawr, |
bf99de36 MN |
137 | unsigned long dawrx); |
138 | ||
143a1dec | 139 | #ifdef CONFIG_PPC32 /* XXX for now */ |
143a1dec PM |
140 | /* A general init function, called by ppc_init in init/main.c. |
141 | May be NULL. */ | |
142 | void (*init)(void); | |
143 | ||
143a1dec PM |
144 | void (*kgdb_map_scc)(void); |
145 | ||
143a1dec PM |
146 | /* |
147 | * optional PCI "hooks" | |
148 | */ | |
143a1dec PM |
149 | /* Called at then very end of pcibios_init() */ |
150 | void (*pcibios_after_init)(void); | |
151 | ||
3d1229d6 | 152 | #endif /* CONFIG_PPC32 */ |
143a1dec | 153 | |
89c2dd62 KG |
154 | /* Called in indirect_* to avoid touching devices */ |
155 | int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); | |
156 | ||
bf5e2ba2 BH |
157 | /* Called after PPC generic resource fixup to perform |
158 | machine specific fixups */ | |
159 | void (*pcibios_fixup_resources)(struct pci_dev *); | |
160 | ||
161 | /* Called for each PCI bus in the system when it's probed */ | |
162 | void (*pcibios_fixup_bus)(struct pci_bus *); | |
163 | ||
491b98c3 BH |
164 | /* Called after scan and before resource survey */ |
165 | void (*pcibios_fixup_phb)(struct pci_controller *hose); | |
166 | ||
988fc3ba BL |
167 | /* |
168 | * Called after device has been added to bus and | |
169 | * before sysfs has been created. | |
170 | */ | |
171 | void (*pcibios_bus_add_device)(struct pci_dev *pdev); | |
172 | ||
38274637 YX |
173 | resource_size_t (*pcibios_default_alignment)(void); |
174 | ||
6e628c7d WY |
175 | #ifdef CONFIG_PCI_IOV |
176 | void (*pcibios_fixup_sriov)(struct pci_dev *pdev); | |
5350ab3f | 177 | resource_size_t (*pcibios_iov_resource_alignment)(struct pci_dev *, int resno); |
988fc3ba BL |
178 | int (*pcibios_sriov_enable)(struct pci_dev *pdev, u16 num_vfs); |
179 | int (*pcibios_sriov_disable)(struct pci_dev *pdev); | |
6e628c7d WY |
180 | #endif /* CONFIG_PCI_IOV */ |
181 | ||
143a1dec PM |
182 | /* Called to shutdown machine specific hardware not already controlled |
183 | * by other drivers. | |
143a1dec PM |
184 | */ |
185 | void (*machine_shutdown)(void); | |
186 | ||
da665885 | 187 | #ifdef CONFIG_KEXEC_CORE |
50266a1f AB |
188 | void (*kexec_cpu_down)(int crash_shutdown, int secondary); |
189 | ||
143a1dec PM |
190 | /* Called to do what every setup is needed on image and the |
191 | * reboot code buffer. Returns 0 on success. | |
192 | * Provide your own (maybe dummy) implementation if your platform | |
193 | * claims to support kexec. | |
194 | */ | |
195 | int (*machine_kexec_prepare)(struct kimage *image); | |
357574c4 AB |
196 | |
197 | /* Called to perform the _real_ kexec. | |
198 | * Do NOT allocate memory or fail here. We are past the point of | |
199 | * no return. | |
200 | */ | |
201 | void (*machine_kexec)(struct kimage *image); | |
da665885 | 202 | #endif /* CONFIG_KEXEC_CORE */ |
7ac5dde9 SW |
203 | |
204 | #ifdef CONFIG_SUSPEND | |
205 | /* These are called to disable and enable, respectively, IRQs when | |
206 | * entering a suspend state. If NULL, then the generic versions | |
207 | * will be called. The generic versions disable/enable the | |
208 | * decrementer along with interrupts. | |
209 | */ | |
210 | void (*suspend_disable_irqs)(void); | |
211 | void (*suspend_enable_irqs)(void); | |
212 | #endif | |
12633e80 NF |
213 | |
214 | #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE | |
215 | ssize_t (*cpu_probe)(const char *, size_t); | |
216 | ssize_t (*cpu_release)(const char *, size_t); | |
217 | #endif | |
a4da0d50 ME |
218 | |
219 | #ifdef CONFIG_ARCH_RANDOM | |
01c9348c | 220 | int (*get_random_seed)(unsigned long *v); |
a4da0d50 | 221 | #endif |
1da177e4 LT |
222 | }; |
223 | ||
fc4033b2 | 224 | extern void e500_idle(void); |
a0652fc9 PM |
225 | extern void power4_idle(void); |
226 | extern void ppc6xx_idle(void); | |
34d97e07 | 227 | extern void book3e_idle(void); |
fd899c0c | 228 | |
e8222502 BH |
229 | /* |
230 | * ppc_md contains a copy of the machine description structure for the | |
231 | * current platform. machine_id contains the initial address where the | |
232 | * description was found during boot. | |
233 | */ | |
1da177e4 | 234 | extern struct machdep_calls ppc_md; |
e8222502 BH |
235 | extern struct machdep_calls *machine_id; |
236 | ||
33def849 | 237 | #define __machine_desc __section(".machine.desc") |
e8222502 | 238 | |
d0e15bed PM |
239 | #define define_machine(name) \ |
240 | extern struct machdep_calls mach_##name; \ | |
241 | EXPORT_SYMBOL(mach_##name); \ | |
242 | struct machdep_calls mach_##name __machine_desc = | |
243 | ||
e8222502 BH |
244 | #define machine_is(name) \ |
245 | ({ \ | |
246 | extern struct machdep_calls mach_##name \ | |
247 | __attribute__((weak)); \ | |
248 | machine_id == &mach_##name; \ | |
249 | }) | |
250 | ||
251 | extern void probe_machine(void); | |
252 | ||
1da177e4 LT |
253 | #ifdef CONFIG_PPC_PMAC |
254 | /* | |
255 | * Power macintoshes have either a CUDA, PMU or SMU controlling | |
256 | * system reset, power, NVRAM, RTC. | |
257 | */ | |
258 | typedef enum sys_ctrler_kind { | |
259 | SYS_CTRLER_UNKNOWN = 0, | |
260 | SYS_CTRLER_CUDA = 1, | |
261 | SYS_CTRLER_PMU = 2, | |
262 | SYS_CTRLER_SMU = 3, | |
263 | } sys_ctrler_t; | |
264 | extern sys_ctrler_t sys_ctrler; | |
265 | ||
266 | #endif /* CONFIG_PPC_PMAC */ | |
267 | ||
1da177e4 LT |
268 | static inline void log_error(char *buf, unsigned int err_type, int fatal) |
269 | { | |
270 | if (ppc_md.log_error) | |
271 | ppc_md.log_error(buf, err_type, fatal); | |
272 | } | |
273 | ||
7929d407 | 274 | #define __define_machine_initcall(mach, fn, id) \ |
800d68c3 GL |
275 | static int __init __machine_initcall_##mach##_##fn(void) { \ |
276 | if (machine_is(mach)) return fn(); \ | |
277 | return 0; \ | |
278 | } \ | |
7929d407 ML |
279 | __define_initcall(__machine_initcall_##mach##_##fn, id); |
280 | ||
8d3c941e | 281 | #define machine_early_initcall(mach, fn) __define_machine_initcall(mach, fn, early) |
7929d407 ML |
282 | #define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1) |
283 | #define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s) | |
284 | #define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2) | |
285 | #define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s) | |
286 | #define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3) | |
287 | #define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s) | |
288 | #define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4) | |
289 | #define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s) | |
290 | #define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5) | |
291 | #define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s) | |
292 | #define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs) | |
293 | #define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6) | |
294 | #define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s) | |
295 | #define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7) | |
296 | #define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s) | |
800d68c3 | 297 | |
1da177e4 | 298 | #endif /* __KERNEL__ */ |
b41fc4f8 | 299 | #endif /* _ASM_POWERPC_MACHDEP_H */ |