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 (*hpte_invalidate
)(unsigned long slot
,
39 int bpsize
, int apsize
,
40 int ssize
, int local
);
41 long (*hpte_updatepp
)(unsigned long slot
,
44 int bpsize
, int apsize
,
45 int ssize
, int local
);
46 void (*hpte_updateboltedpp
)(unsigned long newpp
,
48 int psize
, int ssize
);
49 long (*hpte_insert
)(unsigned long hpte_group
,
54 int psize
, int apsize
,
56 long (*hpte_remove
)(unsigned long hpte_group
);
57 void (*hpte_removebolted
)(unsigned long ea
,
58 int psize
, int ssize
);
59 void (*flush_hash_range
)(unsigned long number
, int local
);
60 void (*hugepage_invalidate
)(unsigned long vsid
,
62 unsigned char *hpte_slot_array
,
63 int psize
, int ssize
, int local
);
64 /* special for kexec, to be called in real mode, linear mapping is
65 * destroyed as well */
66 void (*hpte_clear_all
)(void);
68 int (*tce_build
)(struct iommu_table
*tbl
,
72 enum dma_data_direction direction
,
73 struct dma_attrs
*attrs
);
74 void (*tce_free
)(struct iommu_table
*tbl
,
77 unsigned long (*tce_get
)(struct iommu_table
*tbl
,
79 void (*tce_flush
)(struct iommu_table
*tbl
);
81 /* _rm versions are for real mode use only */
82 int (*tce_build_rm
)(struct iommu_table
*tbl
,
86 enum dma_data_direction direction
,
87 struct dma_attrs
*attrs
);
88 void (*tce_free_rm
)(struct iommu_table
*tbl
,
91 void (*tce_flush_rm
)(struct iommu_table
*tbl
);
93 void __iomem
* (*ioremap
)(phys_addr_t addr
, unsigned long size
,
94 unsigned long flags
, void *caller
);
95 void (*iounmap
)(volatile void __iomem
*token
);
98 void (*iommu_save
)(void);
99 void (*iommu_restore
)(void);
101 #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
102 unsigned long (*memory_block_size
)(void);
104 #endif /* CONFIG_PPC64 */
106 void (*pci_dma_dev_setup
)(struct pci_dev
*dev
);
107 void (*pci_dma_bus_setup
)(struct pci_bus
*bus
);
109 /* Platform set_dma_mask and dma_get_required_mask overrides */
110 int (*dma_set_mask
)(struct device
*dev
, u64 dma_mask
);
111 u64 (*dma_get_required_mask
)(struct device
*dev
);
114 void (*setup_arch
)(void); /* Optional, may be NULL */
115 void (*init_early
)(void);
116 /* Optional, may be NULL. */
117 void (*show_cpuinfo
)(struct seq_file
*m
);
118 void (*show_percpuinfo
)(struct seq_file
*m
, int i
);
119 /* Returns the current operating frequency of "cpu" in Hz */
120 unsigned long (*get_proc_freq
)(unsigned int cpu
);
122 void (*init_IRQ
)(void);
124 /* Return an irq, or NO_IRQ to indicate there are none pending. */
125 unsigned int (*get_irq
)(void);
128 /* Called after scanning the bus, before allocating resources */
129 void (*pcibios_fixup
)(void);
130 int (*pci_probe_mode
)(struct pci_bus
*);
131 void (*pci_irq_fixup
)(struct pci_dev
*dev
);
132 int (*pcibios_root_bridge_prepare
)(struct pci_host_bridge
135 /* To setup PHBs when using automatic OF platform driver for PCI */
136 int (*pci_setup_phb
)(struct pci_controller
*host
);
138 #ifdef CONFIG_PCI_MSI
139 int (*setup_msi_irqs
)(struct pci_dev
*dev
,
141 void (*teardown_msi_irqs
)(struct pci_dev
*dev
);
144 void (*restart
)(char *cmd
);
146 void (*panic
)(char *str
);
147 void (*cpu_die
)(void);
149 long (*time_init
)(void); /* Optional, may be NULL */
151 int (*set_rtc_time
)(struct rtc_time
*);
152 void (*get_rtc_time
)(struct rtc_time
*);
153 unsigned long (*get_boot_time
)(void);
154 unsigned char (*rtc_read_val
)(int addr
);
155 void (*rtc_write_val
)(int addr
, unsigned char val
);
157 void (*calibrate_decr
)(void);
159 void (*progress
)(char *, unsigned short);
161 /* Interface for platform error logging */
162 void (*log_error
)(char *buf
, unsigned int err_type
, int fatal
);
164 unsigned char (*nvram_read_val
)(int addr
);
165 void (*nvram_write_val
)(int addr
, unsigned char val
);
166 ssize_t (*nvram_write
)(char *buf
, size_t count
, loff_t
*index
);
167 ssize_t (*nvram_read
)(char *buf
, size_t count
, loff_t
*index
);
168 ssize_t (*nvram_size
)(void);
169 void (*nvram_sync
)(void);
171 /* Exception handlers */
172 int (*system_reset_exception
)(struct pt_regs
*regs
);
173 int (*machine_check_exception
)(struct pt_regs
*regs
);
174 int (*handle_hmi_exception
)(struct pt_regs
*regs
);
176 /* Early exception handlers called in realmode */
177 int (*hmi_exception_early
)(struct pt_regs
*regs
);
179 /* Called during machine check exception to retrive fixup address. */
180 bool (*mce_check_early_recovery
)(struct pt_regs
*regs
);
182 /* Motherboard/chipset features. This is a kind of general purpose
183 * hook used to control some machine specific features (like reset
184 * lines, chip power control, etc...).
186 long (*feature_call
)(unsigned int feature
, ...);
188 /* Get legacy PCI/IDE interrupt mapping */
189 int (*pci_get_legacy_ide_irq
)(struct pci_dev
*dev
, int channel
);
191 /* Get access protection for /dev/mem */
192 pgprot_t (*phys_mem_access_prot
)(struct file
*file
,
198 * Function for waiting for work with reduced power in idle loop;
199 * called with interrupts disabled.
201 void (*power_save
)(void);
203 /* Function to enable performance monitor counters for this
204 platform, called once per cpu. */
205 void (*enable_pmcs
)(void);
207 /* Set DABR for this platform, leave empty for default implemenation */
208 int (*set_dabr
)(unsigned long dabr
,
209 unsigned long dabrx
);
211 /* Set DAWR for this platform, leave empty for default implemenation */
212 int (*set_dawr
)(unsigned long dawr
,
213 unsigned long dawrx
);
215 #ifdef CONFIG_PPC32 /* XXX for now */
216 /* A general init function, called by ppc_init in init/main.c.
220 void (*kgdb_map_scc
)(void);
223 * optional PCI "hooks"
225 /* Called at then very end of pcibios_init() */
226 void (*pcibios_after_init
)(void);
228 #endif /* CONFIG_PPC32 */
230 /* Called in indirect_* to avoid touching devices */
231 int (*pci_exclude_device
)(struct pci_controller
*, unsigned char, unsigned char);
233 /* Called after PPC generic resource fixup to perform
234 machine specific fixups */
235 void (*pcibios_fixup_resources
)(struct pci_dev
*);
237 /* Called for each PCI bus in the system when it's probed */
238 void (*pcibios_fixup_bus
)(struct pci_bus
*);
240 /* Called when pci_enable_device() is called. Returns 0 to
241 * allow assignment/enabling of the device. */
242 int (*pcibios_enable_device_hook
)(struct pci_dev
*);
244 /* Called after scan and before resource survey */
245 void (*pcibios_fixup_phb
)(struct pci_controller
*hose
);
247 /* Called during PCI resource reassignment */
248 resource_size_t (*pcibios_window_alignment
)(struct pci_bus
*, unsigned long type
);
250 /* Reset the secondary bus of bridge */
251 void (*pcibios_reset_secondary_bus
)(struct pci_dev
*dev
);
253 /* Called to shutdown machine specific hardware not already controlled
256 void (*machine_shutdown
)(void);
259 void (*kexec_cpu_down
)(int crash_shutdown
, int secondary
);
261 /* Called to do what every setup is needed on image and the
262 * reboot code buffer. Returns 0 on success.
263 * Provide your own (maybe dummy) implementation if your platform
264 * claims to support kexec.
266 int (*machine_kexec_prepare
)(struct kimage
*image
);
268 /* Called to perform the _real_ kexec.
269 * Do NOT allocate memory or fail here. We are past the point of
272 void (*machine_kexec
)(struct kimage
*image
);
273 #endif /* CONFIG_KEXEC */
275 #ifdef CONFIG_SUSPEND
276 /* These are called to disable and enable, respectively, IRQs when
277 * entering a suspend state. If NULL, then the generic versions
278 * will be called. The generic versions disable/enable the
279 * decrementer along with interrupts.
281 void (*suspend_disable_irqs
)(void);
282 void (*suspend_enable_irqs
)(void);
284 int (*suspend_disable_cpu
)(void);
286 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
287 ssize_t (*cpu_probe
)(const char *, size_t);
288 ssize_t (*cpu_release
)(const char *, size_t);
291 #ifdef CONFIG_ARCH_RANDOM
292 int (*get_random_long
)(unsigned long *v
);
296 extern void e500_idle(void);
297 extern void power4_idle(void);
298 extern void power7_idle(void);
299 extern void ppc6xx_idle(void);
300 extern void book3e_idle(void);
303 * ppc_md contains a copy of the machine description structure for the
304 * current platform. machine_id contains the initial address where the
305 * description was found during boot.
307 extern struct machdep_calls ppc_md
;
308 extern struct machdep_calls
*machine_id
;
310 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
312 #define define_machine(name) \
313 extern struct machdep_calls mach_##name; \
314 EXPORT_SYMBOL(mach_##name); \
315 struct machdep_calls mach_##name __machine_desc =
317 #define machine_is(name) \
319 extern struct machdep_calls mach_##name \
320 __attribute__((weak)); \
321 machine_id == &mach_##name; \
324 extern void probe_machine(void);
326 #ifdef CONFIG_PPC_PMAC
328 * Power macintoshes have either a CUDA, PMU or SMU controlling
329 * system reset, power, NVRAM, RTC.
331 typedef enum sys_ctrler_kind
{
332 SYS_CTRLER_UNKNOWN
= 0,
337 extern sys_ctrler_t sys_ctrler
;
339 #endif /* CONFIG_PPC_PMAC */
341 static inline void log_error(char *buf
, unsigned int err_type
, int fatal
)
343 if (ppc_md
.log_error
)
344 ppc_md
.log_error(buf
, err_type
, fatal
);
347 #define __define_machine_initcall(mach, fn, id) \
348 static int __init __machine_initcall_##mach##_##fn(void) { \
349 if (machine_is(mach)) return fn(); \
352 __define_initcall(__machine_initcall_##mach##_##fn, id);
354 #define machine_early_initcall(mach, fn) __define_machine_initcall(mach, fn, early)
355 #define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1)
356 #define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s)
357 #define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2)
358 #define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s)
359 #define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3)
360 #define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s)
361 #define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4)
362 #define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s)
363 #define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5)
364 #define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s)
365 #define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs)
366 #define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6)
367 #define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s)
368 #define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7)
369 #define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s)
371 #endif /* __KERNEL__ */
372 #endif /* _ASM_POWERPC_MACHDEP_H */