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>
16 #include <asm/setup.h>
18 /* We export this macro for external modules like Alsa to know if
19 * ppc_md.feature_call is implemented or not
21 #define CONFIG_PPC_HAS_FEATURE_CALLS
29 struct pci_controller
;
34 void (*message_pass
)(int target
, int msg
);
36 void (*kick_cpu
)(int nr
);
37 void (*setup_cpu
)(int nr
);
38 void (*take_timebase
)(void);
39 void (*give_timebase
)(void);
40 int (*cpu_disable
)(void);
41 void (*cpu_die
)(unsigned int nr
);
42 int (*cpu_bootable
)(unsigned int nr
);
46 struct machdep_calls
{
49 void (*hpte_invalidate
)(unsigned long slot
,
53 long (*hpte_updatepp
)(unsigned long slot
,
58 void (*hpte_updateboltedpp
)(unsigned long newpp
,
60 int psize
, int ssize
);
61 long (*hpte_insert
)(unsigned long hpte_group
,
66 int psize
, int ssize
);
67 long (*hpte_remove
)(unsigned long hpte_group
);
68 void (*hpte_removebolted
)(unsigned long ea
,
69 int psize
, int ssize
);
70 void (*flush_hash_range
)(unsigned long number
, int local
);
72 /* special for kexec, to be called in real mode, linear mapping is
73 * destroyed as well */
74 void (*hpte_clear_all
)(void);
76 int (*tce_build
)(struct iommu_table
*tbl
,
80 enum dma_data_direction direction
,
81 struct dma_attrs
*attrs
);
82 void (*tce_free
)(struct iommu_table
*tbl
,
85 unsigned long (*tce_get
)(struct iommu_table
*tbl
,
87 void (*tce_flush
)(struct iommu_table
*tbl
);
89 void __iomem
* (*ioremap
)(phys_addr_t addr
, unsigned long size
,
90 unsigned long flags
, void *caller
);
91 void (*iounmap
)(volatile void __iomem
*token
);
94 void (*iommu_save
)(void);
95 void (*iommu_restore
)(void);
97 #endif /* CONFIG_PPC64 */
99 void (*pci_dma_dev_setup
)(struct pci_dev
*dev
);
100 void (*pci_dma_bus_setup
)(struct pci_bus
*bus
);
102 /* Platform set_dma_mask override */
103 int (*dma_set_mask
)(struct device
*dev
, u64 dma_mask
);
106 void (*setup_arch
)(void); /* Optional, may be NULL */
107 void (*init_early
)(void);
108 /* Optional, may be NULL. */
109 void (*show_cpuinfo
)(struct seq_file
*m
);
110 void (*show_percpuinfo
)(struct seq_file
*m
, int i
);
112 void (*init_IRQ
)(void);
114 /* Return an irq, or NO_IRQ to indicate there are none pending.
115 * If for some reason there is no irq, but the interrupt
116 * shouldn't be counted as spurious, return NO_IRQ_IGNORE. */
117 unsigned int (*get_irq
)(void);
120 /* Called after scanning the bus, before allocating resources */
121 void (*pcibios_fixup
)(void);
122 int (*pci_probe_mode
)(struct pci_bus
*);
123 void (*pci_irq_fixup
)(struct pci_dev
*dev
);
125 /* To setup PHBs when using automatic OF platform driver for PCI */
126 int (*pci_setup_phb
)(struct pci_controller
*host
);
128 #ifdef CONFIG_PCI_MSI
129 int (*msi_check_device
)(struct pci_dev
* dev
,
131 int (*setup_msi_irqs
)(struct pci_dev
*dev
,
133 void (*teardown_msi_irqs
)(struct pci_dev
*dev
);
136 void (*restart
)(char *cmd
);
137 void (*power_off
)(void);
139 void (*panic
)(char *str
);
140 void (*cpu_die
)(void);
142 long (*time_init
)(void); /* Optional, may be NULL */
144 int (*set_rtc_time
)(struct rtc_time
*);
145 void (*get_rtc_time
)(struct rtc_time
*);
146 unsigned long (*get_boot_time
)(void);
147 unsigned char (*rtc_read_val
)(int addr
);
148 void (*rtc_write_val
)(int addr
, unsigned char val
);
150 void (*calibrate_decr
)(void);
152 void (*progress
)(char *, unsigned short);
154 /* Interface for platform error logging */
155 void (*log_error
)(char *buf
, unsigned int err_type
, int fatal
);
157 unsigned char (*nvram_read_val
)(int addr
);
158 void (*nvram_write_val
)(int addr
, unsigned char val
);
159 ssize_t (*nvram_write
)(char *buf
, size_t count
, loff_t
*index
);
160 ssize_t (*nvram_read
)(char *buf
, size_t count
, loff_t
*index
);
161 ssize_t (*nvram_size
)(void);
162 void (*nvram_sync
)(void);
164 /* Exception handlers */
165 int (*system_reset_exception
)(struct pt_regs
*regs
);
166 int (*machine_check_exception
)(struct pt_regs
*regs
);
168 /* Motherboard/chipset features. This is a kind of general purpose
169 * hook used to control some machine specific features (like reset
170 * lines, chip power control, etc...).
172 long (*feature_call
)(unsigned int feature
, ...);
174 /* Get legacy PCI/IDE interrupt mapping */
175 int (*pci_get_legacy_ide_irq
)(struct pci_dev
*dev
, int channel
);
177 /* Get access protection for /dev/mem */
178 pgprot_t (*phys_mem_access_prot
)(struct file
*file
,
183 /* Idle loop for this platform, leave empty for default idle loop */
184 void (*idle_loop
)(void);
187 * Function for waiting for work with reduced power in idle loop;
188 * called with interrupts disabled.
190 void (*power_save
)(void);
192 /* Function to enable performance monitor counters for this
193 platform, called once per cpu. */
194 void (*enable_pmcs
)(void);
196 /* Set DABR for this platform, leave empty for default implemenation */
197 int (*set_dabr
)(unsigned long dabr
);
199 #ifdef CONFIG_PPC32 /* XXX for now */
200 /* A general init function, called by ppc_init in init/main.c.
204 void (*kgdb_map_scc
)(void);
207 * optional PCI "hooks"
209 /* Called at then very end of pcibios_init() */
210 void (*pcibios_after_init
)(void);
212 #endif /* CONFIG_PPC32 */
214 /* Called in indirect_* to avoid touching devices */
215 int (*pci_exclude_device
)(struct pci_controller
*, unsigned char, unsigned char);
217 /* Called after PPC generic resource fixup to perform
218 machine specific fixups */
219 void (*pcibios_fixup_resources
)(struct pci_dev
*);
221 /* Called for each PCI bus in the system when it's probed */
222 void (*pcibios_fixup_bus
)(struct pci_bus
*);
224 /* Called when pci_enable_device() is called. Returns 0 to
225 * allow assignment/enabling of the device. */
226 int (*pcibios_enable_device_hook
)(struct pci_dev
*);
228 /* Called to shutdown machine specific hardware not already controlled
231 void (*machine_shutdown
)(void);
234 void (*kexec_cpu_down
)(int crash_shutdown
, int secondary
);
236 /* Called to do what every setup is needed on image and the
237 * reboot code buffer. Returns 0 on success.
238 * Provide your own (maybe dummy) implementation if your platform
239 * claims to support kexec.
241 int (*machine_kexec_prepare
)(struct kimage
*image
);
243 /* Called to perform the _real_ kexec.
244 * Do NOT allocate memory or fail here. We are past the point of
247 void (*machine_kexec
)(struct kimage
*image
);
248 #endif /* CONFIG_KEXEC */
250 #ifdef CONFIG_SUSPEND
251 /* These are called to disable and enable, respectively, IRQs when
252 * entering a suspend state. If NULL, then the generic versions
253 * will be called. The generic versions disable/enable the
254 * decrementer along with interrupts.
256 void (*suspend_disable_irqs
)(void);
257 void (*suspend_enable_irqs
)(void);
259 int (*suspend_disable_cpu
)(void);
261 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
262 ssize_t (*cpu_probe
)(const char *, size_t);
263 ssize_t (*cpu_release
)(const char *, size_t);
267 extern void e500_idle(void);
268 extern void power4_idle(void);
269 extern void power4_cpu_offline_powersave(void);
270 extern void ppc6xx_idle(void);
271 extern void book3e_idle(void);
274 * ppc_md contains a copy of the machine description structure for the
275 * current platform. machine_id contains the initial address where the
276 * description was found during boot.
278 extern struct machdep_calls ppc_md
;
279 extern struct machdep_calls
*machine_id
;
281 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
283 #define define_machine(name) \
284 extern struct machdep_calls mach_##name; \
285 EXPORT_SYMBOL(mach_##name); \
286 struct machdep_calls mach_##name __machine_desc =
288 #define machine_is(name) \
290 extern struct machdep_calls mach_##name \
291 __attribute__((weak)); \
292 machine_id == &mach_##name; \
295 extern void probe_machine(void);
297 extern char cmd_line
[COMMAND_LINE_SIZE
];
299 #ifdef CONFIG_PPC_PMAC
301 * Power macintoshes have either a CUDA, PMU or SMU controlling
302 * system reset, power, NVRAM, RTC.
304 typedef enum sys_ctrler_kind
{
305 SYS_CTRLER_UNKNOWN
= 0,
310 extern sys_ctrler_t sys_ctrler
;
312 #endif /* CONFIG_PPC_PMAC */
315 /* Poor default implementations */
316 extern void __devinit
smp_generic_give_timebase(void);
317 extern void __devinit
smp_generic_take_timebase(void);
318 #endif /* CONFIG_SMP */
321 /* Functions to produce codes on the leds.
322 * The SRC code should be unique for the message category and should
323 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
324 * and (for boot & dump) should be sorted numerically in the order
327 /* Print a boot progress message. */
328 void ppc64_boot_msg(unsigned int src
, const char *msg
);
330 static inline void log_error(char *buf
, unsigned int err_type
, int fatal
)
332 if (ppc_md
.log_error
)
333 ppc_md
.log_error(buf
, err_type
, fatal
);
336 #define __define_machine_initcall(mach,level,fn,id) \
337 static int __init __machine_initcall_##mach##_##fn(void) { \
338 if (machine_is(mach)) return fn(); \
341 __define_initcall(level,__machine_initcall_##mach##_##fn,id);
343 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1)
344 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s)
345 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2)
346 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
347 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3)
348 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s)
349 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4)
350 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s)
351 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5)
352 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s)
353 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs)
354 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6)
355 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s)
356 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7)
357 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s)
359 #endif /* __KERNEL__ */
360 #endif /* _ASM_POWERPC_MACHDEP_H */