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_enable)(unsigned int nr);
41 int (*cpu_disable)(void);
42 void (*cpu_die)(unsigned int nr);
43 int (*cpu_bootable)(unsigned int nr);
47 struct machdep_calls {
50 void (*hpte_invalidate)(unsigned long slot,
54 long (*hpte_updatepp)(unsigned long slot,
59 void (*hpte_updateboltedpp)(unsigned long newpp,
61 int psize, int ssize);
62 long (*hpte_insert)(unsigned long hpte_group,
67 int psize, int ssize);
68 long (*hpte_remove)(unsigned long hpte_group);
69 void (*hpte_removebolted)(unsigned long ea,
70 int psize, int ssize);
71 void (*flush_hash_range)(unsigned long number, int local);
73 /* special for kexec, to be called in real mode, linear mapping is
74 * destroyed as well */
75 void (*hpte_clear_all)(void);
77 int (*tce_build)(struct iommu_table *tbl,
81 enum dma_data_direction direction,
82 struct dma_attrs *attrs);
83 void (*tce_free)(struct iommu_table *tbl,
86 unsigned long (*tce_get)(struct iommu_table *tbl,
88 void (*tce_flush)(struct iommu_table *tbl);
90 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
91 unsigned long flags, void *caller);
92 void (*iounmap)(volatile void __iomem *token);
95 void (*iommu_save)(void);
96 void (*iommu_restore)(void);
98 #endif /* CONFIG_PPC64 */
100 void (*pci_dma_dev_setup)(struct pci_dev *dev);
101 void (*pci_dma_bus_setup)(struct pci_bus *bus);
103 /* Platform set_dma_mask override */
104 int (*dma_set_mask)(struct device *dev, u64 dma_mask);
107 void (*setup_arch)(void); /* Optional, may be NULL */
108 void (*init_early)(void);
109 /* Optional, may be NULL. */
110 void (*show_cpuinfo)(struct seq_file *m);
111 void (*show_percpuinfo)(struct seq_file *m, int i);
113 void (*init_IRQ)(void);
115 /* Return an irq, or NO_IRQ to indicate there are none pending.
116 * If for some reason there is no irq, but the interrupt
117 * shouldn't be counted as spurious, return NO_IRQ_IGNORE. */
118 unsigned int (*get_irq)(void);
120 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
124 /* Called after scanning the bus, before allocating resources */
125 void (*pcibios_fixup)(void);
126 int (*pci_probe_mode)(struct pci_bus *);
127 void (*pci_irq_fixup)(struct pci_dev *dev);
129 /* To setup PHBs when using automatic OF platform driver for PCI */
130 int (*pci_setup_phb)(struct pci_controller *host);
132 #ifdef CONFIG_PCI_MSI
133 int (*msi_check_device)(struct pci_dev* dev,
135 int (*setup_msi_irqs)(struct pci_dev *dev,
137 void (*teardown_msi_irqs)(struct pci_dev *dev);
140 void (*restart)(char *cmd);
141 void (*power_off)(void);
143 void (*panic)(char *str);
144 void (*cpu_die)(void);
146 long (*time_init)(void); /* Optional, may be NULL */
148 int (*set_rtc_time)(struct rtc_time *);
149 void (*get_rtc_time)(struct rtc_time *);
150 unsigned long (*get_boot_time)(void);
151 unsigned char (*rtc_read_val)(int addr);
152 void (*rtc_write_val)(int addr, unsigned char val);
154 void (*calibrate_decr)(void);
156 void (*progress)(char *, unsigned short);
158 /* Interface for platform error logging */
159 void (*log_error)(char *buf, unsigned int err_type, int fatal);
161 unsigned char (*nvram_read_val)(int addr);
162 void (*nvram_write_val)(int addr, unsigned char val);
163 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
164 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
165 ssize_t (*nvram_size)(void);
166 void (*nvram_sync)(void);
168 /* Exception handlers */
169 int (*system_reset_exception)(struct pt_regs *regs);
170 int (*machine_check_exception)(struct pt_regs *regs);
172 /* Motherboard/chipset features. This is a kind of general purpose
173 * hook used to control some machine specific features (like reset
174 * lines, chip power control, etc...).
176 long (*feature_call)(unsigned int feature, ...);
178 /* Get legacy PCI/IDE interrupt mapping */
179 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
181 /* Get access protection for /dev/mem */
182 pgprot_t (*phys_mem_access_prot)(struct file *file,
187 /* Idle loop for this platform, leave empty for default idle loop */
188 void (*idle_loop)(void);
191 * Function for waiting for work with reduced power in idle loop;
192 * called with interrupts disabled.
194 void (*power_save)(void);
196 /* Function to enable performance monitor counters for this
197 platform, called once per cpu. */
198 void (*enable_pmcs)(void);
200 /* Set DABR for this platform, leave empty for default implemenation */
201 int (*set_dabr)(unsigned long dabr);
203 #ifdef CONFIG_PPC32 /* XXX for now */
204 /* A general init function, called by ppc_init in init/main.c.
208 void (*kgdb_map_scc)(void);
211 * optional PCI "hooks"
213 /* Called at then very end of pcibios_init() */
214 void (*pcibios_after_init)(void);
216 #endif /* CONFIG_PPC32 */
218 /* Called in indirect_* to avoid touching devices */
219 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
221 /* Called after PPC generic resource fixup to perform
222 machine specific fixups */
223 void (*pcibios_fixup_resources)(struct pci_dev *);
225 /* Called for each PCI bus in the system when it's probed */
226 void (*pcibios_fixup_bus)(struct pci_bus *);
228 /* Called when pci_enable_device() is called. Returns 0 to
229 * allow assignment/enabling of the device. */
230 int (*pcibios_enable_device_hook)(struct pci_dev *);
232 /* Called to shutdown machine specific hardware not already controlled
235 void (*machine_shutdown)(void);
238 /* Called to do the minimal shutdown needed to run a kexec'd kernel
239 * to run successfully.
240 * XXX Should we move this one out of kexec scope?
242 void (*machine_crash_shutdown)(struct pt_regs *regs);
244 /* Called to do what every setup is needed on image and the
245 * reboot code buffer. Returns 0 on success.
246 * Provide your own (maybe dummy) implementation if your platform
247 * claims to support kexec.
249 int (*machine_kexec_prepare)(struct kimage *image);
251 /* Called to handle any machine specific cleanup on image */
252 void (*machine_kexec_cleanup)(struct kimage *image);
254 /* Called to perform the _real_ kexec.
255 * Do NOT allocate memory or fail here. We are past the point of
258 void (*machine_kexec)(struct kimage *image);
259 #endif /* CONFIG_KEXEC */
261 #ifdef CONFIG_SUSPEND
262 /* These are called to disable and enable, respectively, IRQs when
263 * entering a suspend state. If NULL, then the generic versions
264 * will be called. The generic versions disable/enable the
265 * decrementer along with interrupts.
267 void (*suspend_disable_irqs)(void);
268 void (*suspend_enable_irqs)(void);
270 int (*suspend_disable_cpu)(void);
272 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
273 ssize_t (*cpu_probe)(const char *, size_t);
274 ssize_t (*cpu_release)(const char *, size_t);
278 extern void e500_idle(void);
279 extern void power4_idle(void);
280 extern void power4_cpu_offline_powersave(void);
281 extern void ppc6xx_idle(void);
282 extern void book3e_idle(void);
285 * ppc_md contains a copy of the machine description structure for the
286 * current platform. machine_id contains the initial address where the
287 * description was found during boot.
289 extern struct machdep_calls ppc_md;
290 extern struct machdep_calls *machine_id;
292 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
294 #define define_machine(name) \
295 extern struct machdep_calls mach_##name; \
296 EXPORT_SYMBOL(mach_##name); \
297 struct machdep_calls mach_##name __machine_desc =
299 #define machine_is(name) \
301 extern struct machdep_calls mach_##name \
302 __attribute__((weak)); \
303 machine_id == &mach_##name; \
306 extern void probe_machine(void);
308 extern char cmd_line[COMMAND_LINE_SIZE];
310 #ifdef CONFIG_PPC_PMAC
312 * Power macintoshes have either a CUDA, PMU or SMU controlling
313 * system reset, power, NVRAM, RTC.
315 typedef enum sys_ctrler_kind {
316 SYS_CTRLER_UNKNOWN = 0,
321 extern sys_ctrler_t sys_ctrler;
323 #endif /* CONFIG_PPC_PMAC */
326 /* Poor default implementations */
327 extern void __devinit smp_generic_give_timebase(void);
328 extern void __devinit smp_generic_take_timebase(void);
329 #endif /* CONFIG_SMP */
332 /* Functions to produce codes on the leds.
333 * The SRC code should be unique for the message category and should
334 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
335 * and (for boot & dump) should be sorted numerically in the order
338 /* Print a boot progress message. */
339 void ppc64_boot_msg(unsigned int src, const char *msg);
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,level,fn,id) \
348 static int __init __machine_initcall_##mach##_##fn(void) { \
349 if (machine_is(mach)) return fn(); \
352 __define_initcall(level,__machine_initcall_##mach##_##fn,id);
354 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1)
355 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s)
356 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2)
357 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
358 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3)
359 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s)
360 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4)
361 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s)
362 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5)
363 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s)
364 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs)
365 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6)
366 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s)
367 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7)
368 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s)
370 #endif /* __KERNEL__ */
371 #endif /* _ASM_POWERPC_MACHDEP_H */