1 #ifndef _ASM_POWERPC_MACHDEP_H
2 #define _ASM_POWERPC_MACHDEP_H
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.
12 #include <linux/seq_file.h>
13 #include <linux/init.h>
14 #include <linux/dma-mapping.h>
15 #include <linux/export.h>
17 #include <asm/setup.h>
19 /* We export this macro for external modules like Alsa to know if
20 * ppc_md.feature_call is implemented or not
22 #define CONFIG_PPC_HAS_FEATURE_CALLS
30 struct pci_controller;
32 struct pci_host_bridge;
34 struct machdep_calls {
37 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
38 pgprot_t prot, void *caller);
39 void (*iounmap)(volatile void __iomem *token);
42 void (*iommu_save)(void);
43 void (*iommu_restore)(void);
45 #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
46 unsigned long (*memory_block_size)(void);
48 #endif /* CONFIG_PPC64 */
50 /* Platform set_dma_mask and dma_get_required_mask overrides */
51 int (*dma_set_mask)(struct device *dev, u64 dma_mask);
52 u64 (*dma_get_required_mask)(struct device *dev);
55 void (*setup_arch)(void); /* Optional, may be NULL */
56 /* Optional, may be NULL. */
57 void (*show_cpuinfo)(struct seq_file *m);
58 void (*show_percpuinfo)(struct seq_file *m, int i);
59 /* Returns the current operating frequency of "cpu" in Hz */
60 unsigned long (*get_proc_freq)(unsigned int cpu);
62 void (*init_IRQ)(void);
64 /* Return an irq, or 0 to indicate there are none pending. */
65 unsigned int (*get_irq)(void);
68 /* Called after allocating resources */
69 void (*pcibios_fixup)(void);
70 void (*pci_irq_fixup)(struct pci_dev *dev);
71 int (*pcibios_root_bridge_prepare)(struct pci_host_bridge
74 /* To setup PHBs when using automatic OF platform driver for PCI */
75 int (*pci_setup_phb)(struct pci_controller *host);
77 void __noreturn (*restart)(char *cmd);
78 void __noreturn (*halt)(void);
79 void (*panic)(char *str);
80 void (*cpu_die)(void);
82 long (*time_init)(void); /* Optional, may be NULL */
84 int (*set_rtc_time)(struct rtc_time *);
85 void (*get_rtc_time)(struct rtc_time *);
86 time64_t (*get_boot_time)(void);
87 unsigned char (*rtc_read_val)(int addr);
88 void (*rtc_write_val)(int addr, unsigned char val);
90 void (*calibrate_decr)(void);
92 void (*progress)(char *, unsigned short);
94 /* Interface for platform error logging */
95 void (*log_error)(char *buf, unsigned int err_type, int fatal);
97 unsigned char (*nvram_read_val)(int addr);
98 void (*nvram_write_val)(int addr, unsigned char val);
99 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
100 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
101 ssize_t (*nvram_size)(void);
102 void (*nvram_sync)(void);
104 /* Exception handlers */
105 int (*system_reset_exception)(struct pt_regs *regs);
106 int (*machine_check_exception)(struct pt_regs *regs);
107 int (*handle_hmi_exception)(struct pt_regs *regs);
109 /* Early exception handlers called in realmode */
110 int (*hmi_exception_early)(struct pt_regs *regs);
111 long (*machine_check_early)(struct pt_regs *regs);
113 /* Called during machine check exception to retrive fixup address. */
114 bool (*mce_check_early_recovery)(struct pt_regs *regs);
116 /* Motherboard/chipset features. This is a kind of general purpose
117 * hook used to control some machine specific features (like reset
118 * lines, chip power control, etc...).
120 long (*feature_call)(unsigned int feature, ...);
122 /* Get legacy PCI/IDE interrupt mapping */
123 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
125 /* Get access protection for /dev/mem */
126 pgprot_t (*phys_mem_access_prot)(struct file *file,
132 * Function for waiting for work with reduced power in idle loop;
133 * called with interrupts disabled.
135 void (*power_save)(void);
137 /* Function to enable performance monitor counters for this
138 platform, called once per cpu. */
139 void (*enable_pmcs)(void);
141 /* Set DABR for this platform, leave empty for default implementation */
142 int (*set_dabr)(unsigned long dabr,
143 unsigned long dabrx);
145 /* Set DAWR for this platform, leave empty for default implementation */
146 int (*set_dawr)(unsigned long dawr,
147 unsigned long dawrx);
149 #ifdef CONFIG_PPC32 /* XXX for now */
150 /* A general init function, called by ppc_init in init/main.c.
154 void (*kgdb_map_scc)(void);
157 * optional PCI "hooks"
159 /* Called at then very end of pcibios_init() */
160 void (*pcibios_after_init)(void);
162 #endif /* CONFIG_PPC32 */
164 /* Called in indirect_* to avoid touching devices */
165 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
167 /* Called after PPC generic resource fixup to perform
168 machine specific fixups */
169 void (*pcibios_fixup_resources)(struct pci_dev *);
171 /* Called for each PCI bus in the system when it's probed */
172 void (*pcibios_fixup_bus)(struct pci_bus *);
174 /* Called after scan and before resource survey */
175 void (*pcibios_fixup_phb)(struct pci_controller *hose);
178 * Called after device has been added to bus and
179 * before sysfs has been created.
181 void (*pcibios_bus_add_device)(struct pci_dev *pdev);
183 resource_size_t (*pcibios_default_alignment)(void);
185 #ifdef CONFIG_PCI_IOV
186 void (*pcibios_fixup_sriov)(struct pci_dev *pdev);
187 resource_size_t (*pcibios_iov_resource_alignment)(struct pci_dev *, int resno);
188 int (*pcibios_sriov_enable)(struct pci_dev *pdev, u16 num_vfs);
189 int (*pcibios_sriov_disable)(struct pci_dev *pdev);
190 #endif /* CONFIG_PCI_IOV */
192 /* Called to shutdown machine specific hardware not already controlled
195 void (*machine_shutdown)(void);
197 #ifdef CONFIG_KEXEC_CORE
198 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
200 /* Called to do what every setup is needed on image and the
201 * reboot code buffer. Returns 0 on success.
202 * Provide your own (maybe dummy) implementation if your platform
203 * claims to support kexec.
205 int (*machine_kexec_prepare)(struct kimage *image);
207 /* Called to perform the _real_ kexec.
208 * Do NOT allocate memory or fail here. We are past the point of
211 void (*machine_kexec)(struct kimage *image);
212 #endif /* CONFIG_KEXEC_CORE */
214 #ifdef CONFIG_SUSPEND
215 /* These are called to disable and enable, respectively, IRQs when
216 * entering a suspend state. If NULL, then the generic versions
217 * will be called. The generic versions disable/enable the
218 * decrementer along with interrupts.
220 void (*suspend_disable_irqs)(void);
221 void (*suspend_enable_irqs)(void);
223 int (*suspend_disable_cpu)(void);
225 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
226 ssize_t (*cpu_probe)(const char *, size_t);
227 ssize_t (*cpu_release)(const char *, size_t);
230 #ifdef CONFIG_ARCH_RANDOM
231 int (*get_random_seed)(unsigned long *v);
235 extern void e500_idle(void);
236 extern void power4_idle(void);
237 extern void power7_idle(void);
238 extern void power9_idle(void);
239 extern void ppc6xx_idle(void);
240 extern void book3e_idle(void);
243 * ppc_md contains a copy of the machine description structure for the
244 * current platform. machine_id contains the initial address where the
245 * description was found during boot.
247 extern struct machdep_calls ppc_md;
248 extern struct machdep_calls *machine_id;
250 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
252 #define define_machine(name) \
253 extern struct machdep_calls mach_##name; \
254 EXPORT_SYMBOL(mach_##name); \
255 struct machdep_calls mach_##name __machine_desc =
257 #define machine_is(name) \
259 extern struct machdep_calls mach_##name \
260 __attribute__((weak)); \
261 machine_id == &mach_##name; \
264 extern void probe_machine(void);
266 #ifdef CONFIG_PPC_PMAC
268 * Power macintoshes have either a CUDA, PMU or SMU controlling
269 * system reset, power, NVRAM, RTC.
271 typedef enum sys_ctrler_kind {
272 SYS_CTRLER_UNKNOWN = 0,
277 extern sys_ctrler_t sys_ctrler;
279 #endif /* CONFIG_PPC_PMAC */
281 static inline void log_error(char *buf, unsigned int err_type, int fatal)
283 if (ppc_md.log_error)
284 ppc_md.log_error(buf, err_type, fatal);
287 #define __define_machine_initcall(mach, fn, id) \
288 static int __init __machine_initcall_##mach##_##fn(void) { \
289 if (machine_is(mach)) return fn(); \
292 __define_initcall(__machine_initcall_##mach##_##fn, id);
294 #define machine_early_initcall(mach, fn) __define_machine_initcall(mach, fn, early)
295 #define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1)
296 #define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s)
297 #define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2)
298 #define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s)
299 #define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3)
300 #define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s)
301 #define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4)
302 #define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s)
303 #define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5)
304 #define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s)
305 #define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs)
306 #define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6)
307 #define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s)
308 #define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7)
309 #define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s)
311 #endif /* __KERNEL__ */
312 #endif /* _ASM_POWERPC_MACHDEP_H */