]>
Commit | Line | Data |
---|---|---|
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 LT |
5 | |
6 | /* | |
1da177e4 LT |
7 | */ |
8 | ||
1da177e4 LT |
9 | #include <linux/seq_file.h> |
10 | #include <linux/init.h> | |
11 | #include <linux/dma-mapping.h> | |
93087948 | 12 | #include <linux/export.h> |
1da177e4 LT |
13 | |
14 | #include <asm/setup.h> | |
15 | ||
143a1dec PM |
16 | /* We export this macro for external modules like Alsa to know if |
17 | * ppc_md.feature_call is implemented or not | |
18 | */ | |
19 | #define CONFIG_PPC_HAS_FEATURE_CALLS | |
20 | ||
1da177e4 LT |
21 | struct pt_regs; |
22 | struct pci_bus; | |
23 | struct device_node; | |
24 | struct iommu_table; | |
25 | struct rtc_time; | |
26 | struct file; | |
4c9d2800 | 27 | struct pci_controller; |
3d1229d6 | 28 | struct kimage; |
d82fb31a | 29 | struct pci_host_bridge; |
1da177e4 | 30 | |
1da177e4 | 31 | struct machdep_calls { |
e8222502 | 32 | char *name; |
143a1dec | 33 | #ifdef CONFIG_PPC64 |
68a64357 | 34 | void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, |
c766ee72 | 35 | pgprot_t prot, void *caller); |
68a64357 | 36 | void (*iounmap)(volatile void __iomem *token); |
7e11580b JB |
37 | |
38 | #ifdef CONFIG_PM | |
39 | void (*iommu_save)(void); | |
40 | void (*iommu_restore)(void); | |
41 | #endif | |
a5d86257 AB |
42 | #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE |
43 | unsigned long (*memory_block_size)(void); | |
44 | #endif | |
e8222502 | 45 | #endif /* CONFIG_PPC64 */ |
1da177e4 | 46 | |
11ddce15 | 47 | void (*dma_set_mask)(struct device *dev, u64 dma_mask); |
5b6e9ff6 | 48 | |
e8222502 | 49 | int (*probe)(void); |
38db7e74 | 50 | void (*setup_arch)(void); /* Optional, may be NULL */ |
1da177e4 | 51 | /* Optional, may be NULL. */ |
d8699e65 PM |
52 | void (*show_cpuinfo)(struct seq_file *m); |
53 | void (*show_percpuinfo)(struct seq_file *m, int i); | |
2299d03a GS |
54 | /* Returns the current operating frequency of "cpu" in Hz */ |
55 | unsigned long (*get_proc_freq)(unsigned int cpu); | |
1da177e4 LT |
56 | |
57 | void (*init_IRQ)(void); | |
9b647a30 | 58 | |
ef24ba70 | 59 | /* Return an irq, or 0 to indicate there are none pending. */ |
35a84c2f | 60 | unsigned int (*get_irq)(void); |
1da177e4 LT |
61 | |
62 | /* PCI stuff */ | |
6ec73343 | 63 | /* Called after allocating resources */ |
1da177e4 | 64 | void (*pcibios_fixup)(void); |
f90bb153 | 65 | void (*pci_irq_fixup)(struct pci_dev *dev); |
d82fb31a KSS |
66 | int (*pcibios_root_bridge_prepare)(struct pci_host_bridge |
67 | *bridge); | |
1da177e4 | 68 | |
4c9d2800 BH |
69 | /* To setup PHBs when using automatic OF platform driver for PCI */ |
70 | int (*pci_setup_phb)(struct pci_controller *host); | |
71 | ||
95ec77c0 DA |
72 | void __noreturn (*restart)(char *cmd); |
73 | void __noreturn (*halt)(void); | |
ab9dbf77 | 74 | void (*panic)(char *str); |
1da177e4 LT |
75 | void (*cpu_die)(void); |
76 | ||
143a1dec PM |
77 | long (*time_init)(void); /* Optional, may be NULL */ |
78 | ||
1da177e4 LT |
79 | int (*set_rtc_time)(struct rtc_time *); |
80 | void (*get_rtc_time)(struct rtc_time *); | |
5bfd6435 | 81 | time64_t (*get_boot_time)(void); |
143a1dec PM |
82 | unsigned char (*rtc_read_val)(int addr); |
83 | void (*rtc_write_val)(int addr, unsigned char val); | |
1da177e4 LT |
84 | |
85 | void (*calibrate_decr)(void); | |
86 | ||
87 | void (*progress)(char *, unsigned short); | |
88 | ||
1da177e4 LT |
89 | /* Interface for platform error logging */ |
90 | void (*log_error)(char *buf, unsigned int err_type, int fatal); | |
91 | ||
35499c01 PM |
92 | unsigned char (*nvram_read_val)(int addr); |
93 | void (*nvram_write_val)(int addr, unsigned char val); | |
1da177e4 LT |
94 | ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); |
95 | ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); | |
96 | ssize_t (*nvram_size)(void); | |
143a1dec | 97 | void (*nvram_sync)(void); |
1da177e4 LT |
98 | |
99 | /* Exception handlers */ | |
c902be71 | 100 | int (*system_reset_exception)(struct pt_regs *regs); |
1da177e4 | 101 | int (*machine_check_exception)(struct pt_regs *regs); |
0869b6fd MS |
102 | int (*handle_hmi_exception)(struct pt_regs *regs); |
103 | ||
104 | /* Early exception handlers called in realmode */ | |
105 | int (*hmi_exception_early)(struct pt_regs *regs); | |
a43c1590 | 106 | long (*machine_check_early)(struct pt_regs *regs); |
1da177e4 | 107 | |
55672ecf MS |
108 | /* Called during machine check exception to retrive fixup address. */ |
109 | bool (*mce_check_early_recovery)(struct pt_regs *regs); | |
110 | ||
1da177e4 LT |
111 | /* Motherboard/chipset features. This is a kind of general purpose |
112 | * hook used to control some machine specific features (like reset | |
113 | * lines, chip power control, etc...). | |
114 | */ | |
115 | long (*feature_call)(unsigned int feature, ...); | |
116 | ||
1da177e4 LT |
117 | /* Get legacy PCI/IDE interrupt mapping */ |
118 | int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); | |
119 | ||
120 | /* Get access protection for /dev/mem */ | |
121 | pgprot_t (*phys_mem_access_prot)(struct file *file, | |
8b150478 | 122 | unsigned long pfn, |
1da177e4 LT |
123 | unsigned long size, |
124 | pgprot_t vma_prot); | |
125 | ||
a0652fc9 PM |
126 | /* |
127 | * Function for waiting for work with reduced power in idle loop; | |
128 | * called with interrupts disabled. | |
129 | */ | |
130 | void (*power_save)(void); | |
131 | ||
143a1dec PM |
132 | /* Function to enable performance monitor counters for this |
133 | platform, called once per cpu. */ | |
180a3362 | 134 | void (*enable_pmcs)(void); |
143a1dec | 135 | |
446957ba | 136 | /* Set DABR for this platform, leave empty for default implementation */ |
4474ef05 MN |
137 | int (*set_dabr)(unsigned long dabr, |
138 | unsigned long dabrx); | |
76032de8 | 139 | |
446957ba | 140 | /* Set DAWR for this platform, leave empty for default implementation */ |
bf99de36 MN |
141 | int (*set_dawr)(unsigned long dawr, |
142 | unsigned long dawrx); | |
143 | ||
143a1dec | 144 | #ifdef CONFIG_PPC32 /* XXX for now */ |
143a1dec PM |
145 | /* A general init function, called by ppc_init in init/main.c. |
146 | May be NULL. */ | |
147 | void (*init)(void); | |
148 | ||
143a1dec PM |
149 | void (*kgdb_map_scc)(void); |
150 | ||
143a1dec PM |
151 | /* |
152 | * optional PCI "hooks" | |
153 | */ | |
143a1dec PM |
154 | /* Called at then very end of pcibios_init() */ |
155 | void (*pcibios_after_init)(void); | |
156 | ||
3d1229d6 | 157 | #endif /* CONFIG_PPC32 */ |
143a1dec | 158 | |
89c2dd62 KG |
159 | /* Called in indirect_* to avoid touching devices */ |
160 | int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); | |
161 | ||
bf5e2ba2 BH |
162 | /* Called after PPC generic resource fixup to perform |
163 | machine specific fixups */ | |
164 | void (*pcibios_fixup_resources)(struct pci_dev *); | |
165 | ||
166 | /* Called for each PCI bus in the system when it's probed */ | |
167 | void (*pcibios_fixup_bus)(struct pci_bus *); | |
168 | ||
491b98c3 BH |
169 | /* Called after scan and before resource survey */ |
170 | void (*pcibios_fixup_phb)(struct pci_controller *hose); | |
171 | ||
988fc3ba BL |
172 | /* |
173 | * Called after device has been added to bus and | |
174 | * before sysfs has been created. | |
175 | */ | |
176 | void (*pcibios_bus_add_device)(struct pci_dev *pdev); | |
177 | ||
38274637 YX |
178 | resource_size_t (*pcibios_default_alignment)(void); |
179 | ||
6e628c7d WY |
180 | #ifdef CONFIG_PCI_IOV |
181 | void (*pcibios_fixup_sriov)(struct pci_dev *pdev); | |
5350ab3f | 182 | resource_size_t (*pcibios_iov_resource_alignment)(struct pci_dev *, int resno); |
988fc3ba BL |
183 | int (*pcibios_sriov_enable)(struct pci_dev *pdev, u16 num_vfs); |
184 | int (*pcibios_sriov_disable)(struct pci_dev *pdev); | |
6e628c7d WY |
185 | #endif /* CONFIG_PCI_IOV */ |
186 | ||
143a1dec PM |
187 | /* Called to shutdown machine specific hardware not already controlled |
188 | * by other drivers. | |
143a1dec PM |
189 | */ |
190 | void (*machine_shutdown)(void); | |
191 | ||
da665885 | 192 | #ifdef CONFIG_KEXEC_CORE |
50266a1f AB |
193 | void (*kexec_cpu_down)(int crash_shutdown, int secondary); |
194 | ||
143a1dec PM |
195 | /* Called to do what every setup is needed on image and the |
196 | * reboot code buffer. Returns 0 on success. | |
197 | * Provide your own (maybe dummy) implementation if your platform | |
198 | * claims to support kexec. | |
199 | */ | |
200 | int (*machine_kexec_prepare)(struct kimage *image); | |
357574c4 AB |
201 | |
202 | /* Called to perform the _real_ kexec. | |
203 | * Do NOT allocate memory or fail here. We are past the point of | |
204 | * no return. | |
205 | */ | |
206 | void (*machine_kexec)(struct kimage *image); | |
da665885 | 207 | #endif /* CONFIG_KEXEC_CORE */ |
7ac5dde9 SW |
208 | |
209 | #ifdef CONFIG_SUSPEND | |
210 | /* These are called to disable and enable, respectively, IRQs when | |
211 | * entering a suspend state. If NULL, then the generic versions | |
212 | * will be called. The generic versions disable/enable the | |
213 | * decrementer along with interrupts. | |
214 | */ | |
215 | void (*suspend_disable_irqs)(void); | |
216 | void (*suspend_enable_irqs)(void); | |
217 | #endif | |
32d8ad4e | 218 | int (*suspend_disable_cpu)(void); |
12633e80 NF |
219 | |
220 | #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE | |
221 | ssize_t (*cpu_probe)(const char *, size_t); | |
222 | ssize_t (*cpu_release)(const char *, size_t); | |
223 | #endif | |
a4da0d50 ME |
224 | |
225 | #ifdef CONFIG_ARCH_RANDOM | |
01c9348c | 226 | int (*get_random_seed)(unsigned long *v); |
a4da0d50 | 227 | #endif |
1da177e4 LT |
228 | }; |
229 | ||
fc4033b2 | 230 | extern void e500_idle(void); |
a0652fc9 | 231 | extern void power4_idle(void); |
948cf67c | 232 | extern void power7_idle(void); |
2201f994 | 233 | extern void power9_idle(void); |
a0652fc9 | 234 | extern void ppc6xx_idle(void); |
34d97e07 | 235 | extern void book3e_idle(void); |
fd899c0c | 236 | |
e8222502 BH |
237 | /* |
238 | * ppc_md contains a copy of the machine description structure for the | |
239 | * current platform. machine_id contains the initial address where the | |
240 | * description was found during boot. | |
241 | */ | |
1da177e4 | 242 | extern struct machdep_calls ppc_md; |
e8222502 BH |
243 | extern struct machdep_calls *machine_id; |
244 | ||
245 | #define __machine_desc __attribute__ ((__section__ (".machine.desc"))) | |
246 | ||
d0e15bed PM |
247 | #define define_machine(name) \ |
248 | extern struct machdep_calls mach_##name; \ | |
249 | EXPORT_SYMBOL(mach_##name); \ | |
250 | struct machdep_calls mach_##name __machine_desc = | |
251 | ||
e8222502 BH |
252 | #define machine_is(name) \ |
253 | ({ \ | |
254 | extern struct machdep_calls mach_##name \ | |
255 | __attribute__((weak)); \ | |
256 | machine_id == &mach_##name; \ | |
257 | }) | |
258 | ||
259 | extern void probe_machine(void); | |
260 | ||
1da177e4 LT |
261 | #ifdef CONFIG_PPC_PMAC |
262 | /* | |
263 | * Power macintoshes have either a CUDA, PMU or SMU controlling | |
264 | * system reset, power, NVRAM, RTC. | |
265 | */ | |
266 | typedef enum sys_ctrler_kind { | |
267 | SYS_CTRLER_UNKNOWN = 0, | |
268 | SYS_CTRLER_CUDA = 1, | |
269 | SYS_CTRLER_PMU = 2, | |
270 | SYS_CTRLER_SMU = 3, | |
271 | } sys_ctrler_t; | |
272 | extern sys_ctrler_t sys_ctrler; | |
273 | ||
274 | #endif /* CONFIG_PPC_PMAC */ | |
275 | ||
1da177e4 LT |
276 | static inline void log_error(char *buf, unsigned int err_type, int fatal) |
277 | { | |
278 | if (ppc_md.log_error) | |
279 | ppc_md.log_error(buf, err_type, fatal); | |
280 | } | |
281 | ||
7929d407 | 282 | #define __define_machine_initcall(mach, fn, id) \ |
800d68c3 GL |
283 | static int __init __machine_initcall_##mach##_##fn(void) { \ |
284 | if (machine_is(mach)) return fn(); \ | |
285 | return 0; \ | |
286 | } \ | |
7929d407 ML |
287 | __define_initcall(__machine_initcall_##mach##_##fn, id); |
288 | ||
8d3c941e | 289 | #define machine_early_initcall(mach, fn) __define_machine_initcall(mach, fn, early) |
7929d407 ML |
290 | #define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1) |
291 | #define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s) | |
292 | #define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2) | |
293 | #define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s) | |
294 | #define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3) | |
295 | #define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s) | |
296 | #define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4) | |
297 | #define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s) | |
298 | #define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5) | |
299 | #define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s) | |
300 | #define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs) | |
301 | #define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6) | |
302 | #define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s) | |
303 | #define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7) | |
304 | #define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s) | |
800d68c3 | 305 | |
1da177e4 | 306 | #endif /* __KERNEL__ */ |
b41fc4f8 | 307 | #endif /* _ASM_POWERPC_MACHDEP_H */ |