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;
36 void (*message_pass)(int target, int msg);
38 void (*kick_cpu)(int nr);
39 void (*setup_cpu)(int nr);
40 void (*take_timebase)(void);
41 void (*give_timebase)(void);
42 int (*cpu_enable)(unsigned int nr);
43 int (*cpu_disable)(void);
44 void (*cpu_die)(unsigned int nr);
45 int (*cpu_bootable)(unsigned int nr);
49 struct machdep_calls {
52 void (*hpte_invalidate)(unsigned long slot,
56 long (*hpte_updatepp)(unsigned long slot,
61 void (*hpte_updateboltedpp)(unsigned long newpp,
63 int psize, int ssize);
64 long (*hpte_insert)(unsigned long hpte_group,
69 int psize, int ssize);
70 long (*hpte_remove)(unsigned long hpte_group);
71 void (*hpte_removebolted)(unsigned long ea,
72 int psize, int ssize);
73 void (*flush_hash_range)(unsigned long number, int local);
75 /* special for kexec, to be called in real mode, linar mapping is
76 * destroyed as well */
77 void (*hpte_clear_all)(void);
79 int (*tce_build)(struct iommu_table *tbl,
83 enum dma_data_direction direction,
84 struct dma_attrs *attrs);
85 void (*tce_free)(struct iommu_table *tbl,
88 unsigned long (*tce_get)(struct iommu_table *tbl,
90 void (*tce_flush)(struct iommu_table *tbl);
92 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
93 unsigned long flags, void *caller);
94 void (*iounmap)(volatile void __iomem *token);
97 void (*iommu_save)(void);
98 void (*iommu_restore)(void);
100 #endif /* CONFIG_PPC64 */
102 void (*pci_dma_dev_setup)(struct pci_dev *dev);
103 void (*pci_dma_bus_setup)(struct pci_bus *bus);
105 /* Platform set_dma_mask override */
106 int (*dma_set_mask)(struct device *dev, u64 dma_mask);
109 void (*setup_arch)(void); /* Optional, may be NULL */
110 void (*init_early)(void);
111 /* Optional, may be NULL. */
112 void (*show_cpuinfo)(struct seq_file *m);
113 void (*show_percpuinfo)(struct seq_file *m, int i);
115 void (*init_IRQ)(void);
117 /* Return an irq, or NO_IRQ to indicate there are none pending.
118 * If for some reason there is no irq, but the interrupt
119 * shouldn't be counted as spurious, return NO_IRQ_IGNORE. */
120 unsigned int (*get_irq)(void);
122 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
126 /* Called after scanning the bus, before allocating resources */
127 void (*pcibios_fixup)(void);
128 int (*pci_probe_mode)(struct pci_bus *);
129 void (*pci_irq_fixup)(struct pci_dev *dev);
131 /* To setup PHBs when using automatic OF platform driver for PCI */
132 int (*pci_setup_phb)(struct pci_controller *host);
134 #ifdef CONFIG_PCI_MSI
135 int (*msi_check_device)(struct pci_dev* dev,
137 int (*setup_msi_irqs)(struct pci_dev *dev,
139 void (*teardown_msi_irqs)(struct pci_dev *dev);
142 void (*restart)(char *cmd);
143 void (*power_off)(void);
145 void (*panic)(char *str);
146 void (*cpu_die)(void);
148 long (*time_init)(void); /* Optional, may be NULL */
150 int (*set_rtc_time)(struct rtc_time *);
151 void (*get_rtc_time)(struct rtc_time *);
152 unsigned long (*get_boot_time)(void);
153 unsigned char (*rtc_read_val)(int addr);
154 void (*rtc_write_val)(int addr, unsigned char val);
156 void (*calibrate_decr)(void);
158 void (*progress)(char *, unsigned short);
160 /* Interface for platform error logging */
161 void (*log_error)(char *buf, unsigned int err_type, int fatal);
163 unsigned char (*nvram_read_val)(int addr);
164 void (*nvram_write_val)(int addr, unsigned char val);
165 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
166 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
167 ssize_t (*nvram_size)(void);
168 void (*nvram_sync)(void);
170 /* Exception handlers */
171 int (*system_reset_exception)(struct pt_regs *regs);
172 int (*machine_check_exception)(struct pt_regs *regs);
174 /* Motherboard/chipset features. This is a kind of general purpose
175 * hook used to control some machine specific features (like reset
176 * lines, chip power control, etc...).
178 long (*feature_call)(unsigned int feature, ...);
180 /* Get legacy PCI/IDE interrupt mapping */
181 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
183 /* Get access protection for /dev/mem */
184 pgprot_t (*phys_mem_access_prot)(struct file *file,
189 /* Idle loop for this platform, leave empty for default idle loop */
190 void (*idle_loop)(void);
193 * Function for waiting for work with reduced power in idle loop;
194 * called with interrupts disabled.
196 void (*power_save)(void);
198 /* Function to enable performance monitor counters for this
199 platform, called once per cpu. */
200 void (*enable_pmcs)(void);
202 /* Set DABR for this platform, leave empty for default implemenation */
203 int (*set_dabr)(unsigned long dabr);
205 #ifdef CONFIG_PPC32 /* XXX for now */
206 /* A general init function, called by ppc_init in init/main.c.
210 void (*kgdb_map_scc)(void);
213 * optional PCI "hooks"
215 /* Called at then very end of pcibios_init() */
216 void (*pcibios_after_init)(void);
218 #endif /* CONFIG_PPC32 */
220 /* Called in indirect_* to avoid touching devices */
221 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
223 /* Called after PPC generic resource fixup to perform
224 machine specific fixups */
225 void (*pcibios_fixup_resources)(struct pci_dev *);
227 /* Called for each PCI bus in the system when it's probed */
228 void (*pcibios_fixup_bus)(struct pci_bus *);
230 /* Called when pci_enable_device() is called. Returns 0 to
231 * allow assignment/enabling of the device. */
232 int (*pcibios_enable_device_hook)(struct pci_dev *);
234 /* Called to shutdown machine specific hardware not already controlled
237 void (*machine_shutdown)(void);
240 /* Called to do the minimal shutdown needed to run a kexec'd kernel
241 * to run successfully.
242 * XXX Should we move this one out of kexec scope?
244 void (*machine_crash_shutdown)(struct pt_regs *regs);
246 /* Called to do what every setup is needed on image and the
247 * reboot code buffer. Returns 0 on success.
248 * Provide your own (maybe dummy) implementation if your platform
249 * claims to support kexec.
251 int (*machine_kexec_prepare)(struct kimage *image);
253 /* Called to handle any machine specific cleanup on image */
254 void (*machine_kexec_cleanup)(struct kimage *image);
256 /* Called to perform the _real_ kexec.
257 * Do NOT allocate memory or fail here. We are past the point of
260 void (*machine_kexec)(struct kimage *image);
261 #endif /* CONFIG_KEXEC */
263 #ifdef CONFIG_SUSPEND
264 /* These are called to disable and enable, respectively, IRQs when
265 * entering a suspend state. If NULL, then the generic versions
266 * will be called. The generic versions disable/enable the
267 * decrementer along with interrupts.
269 void (*suspend_disable_irqs)(void);
270 void (*suspend_enable_irqs)(void);
272 int (*suspend_disable_cpu)(void);
274 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
275 ssize_t (*cpu_probe)(const char *, size_t);
276 ssize_t (*cpu_release)(const char *, size_t);
280 extern void e500_idle(void);
281 extern void power4_idle(void);
282 extern void power4_cpu_offline_powersave(void);
283 extern void ppc6xx_idle(void);
284 extern void book3e_idle(void);
287 * ppc_md contains a copy of the machine description structure for the
288 * current platform. machine_id contains the initial address where the
289 * description was found during boot.
291 extern struct machdep_calls ppc_md;
292 extern struct machdep_calls *machine_id;
294 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
296 #define define_machine(name) \
297 extern struct machdep_calls mach_##name; \
298 EXPORT_SYMBOL(mach_##name); \
299 struct machdep_calls mach_##name __machine_desc =
301 #define machine_is(name) \
303 extern struct machdep_calls mach_##name \
304 __attribute__((weak)); \
305 machine_id == &mach_##name; \
308 extern void probe_machine(void);
310 extern char cmd_line[COMMAND_LINE_SIZE];
312 #ifdef CONFIG_PPC_PMAC
314 * Power macintoshes have either a CUDA, PMU or SMU controlling
315 * system reset, power, NVRAM, RTC.
317 typedef enum sys_ctrler_kind {
318 SYS_CTRLER_UNKNOWN = 0,
323 extern sys_ctrler_t sys_ctrler;
325 #endif /* CONFIG_PPC_PMAC */
327 extern void setup_pci_ptrs(void);
330 /* Poor default implementations */
331 extern void __devinit smp_generic_give_timebase(void);
332 extern void __devinit smp_generic_take_timebase(void);
333 #endif /* CONFIG_SMP */
336 /* Functions to produce codes on the leds.
337 * The SRC code should be unique for the message category and should
338 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
339 * and (for boot & dump) should be sorted numerically in the order
342 /* Print a boot progress message. */
343 void ppc64_boot_msg(unsigned int src, const char *msg);
345 static inline void log_error(char *buf, unsigned int err_type, int fatal)
347 if (ppc_md.log_error)
348 ppc_md.log_error(buf, err_type, fatal);
351 #define __define_machine_initcall(mach,level,fn,id) \
352 static int __init __machine_initcall_##mach##_##fn(void) { \
353 if (machine_is(mach)) return fn(); \
356 __define_initcall(level,__machine_initcall_##mach##_##fn,id);
358 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1)
359 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s)
360 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2)
361 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
362 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3)
363 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s)
364 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4)
365 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s)
366 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5)
367 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s)
368 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs)
369 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6)
370 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s)
371 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7)
372 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s)
374 #endif /* __KERNEL__ */
375 #endif /* _ASM_POWERPC_MACHDEP_H */