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TOMOYO Linux Cross Reference
Linux/arch/powerpc/include/asm/machdep.h

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  1 #ifndef _ASM_POWERPC_MACHDEP_H
  2 #define _ASM_POWERPC_MACHDEP_H
  3 #ifdef __KERNEL__
  4 
  5 /*
  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.
 10  */
 11 
 12 #include <linux/seq_file.h>
 13 #include <linux/init.h>
 14 #include <linux/dma-mapping.h>
 15 #include <linux/export.h>
 16 
 17 #include <asm/setup.h>
 18 
 19 /* We export this macro for external modules like Alsa to know if
 20  * ppc_md.feature_call is implemented or not
 21  */
 22 #define CONFIG_PPC_HAS_FEATURE_CALLS
 23 
 24 struct pt_regs;
 25 struct pci_bus; 
 26 struct device_node;
 27 struct iommu_table;
 28 struct rtc_time;
 29 struct file;
 30 struct pci_controller;
 31 struct kimage;
 32 struct pci_host_bridge;
 33 
 34 struct machdep_calls {
 35         char            *name;
 36 #ifdef CONFIG_PPC64
 37         void            (*hpte_invalidate)(unsigned long slot,
 38                                            unsigned long vpn,
 39                                            int bpsize, int apsize,
 40                                            int ssize, int local);
 41         long            (*hpte_updatepp)(unsigned long slot, 
 42                                          unsigned long newpp, 
 43                                          unsigned long vpn,
 44                                          int bpsize, int apsize,
 45                                          int ssize, unsigned long flags);
 46         void            (*hpte_updateboltedpp)(unsigned long newpp, 
 47                                                unsigned long ea,
 48                                                int psize, int ssize);
 49         long            (*hpte_insert)(unsigned long hpte_group,
 50                                        unsigned long vpn,
 51                                        unsigned long prpn,
 52                                        unsigned long rflags,
 53                                        unsigned long vflags,
 54                                        int psize, int apsize,
 55                                        int ssize);
 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,
 61                                                unsigned long addr,
 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);
 67 
 68         int             (*tce_build)(struct iommu_table *tbl,
 69                                      long index,
 70                                      long npages,
 71                                      unsigned long uaddr,
 72                                      enum dma_data_direction direction,
 73                                      struct dma_attrs *attrs);
 74         void            (*tce_free)(struct iommu_table *tbl,
 75                                     long index,
 76                                     long npages);
 77         unsigned long   (*tce_get)(struct iommu_table *tbl,
 78                                     long index);
 79         void            (*tce_flush)(struct iommu_table *tbl);
 80 
 81         /* _rm versions are for real mode use only */
 82         int             (*tce_build_rm)(struct iommu_table *tbl,
 83                                      long index,
 84                                      long npages,
 85                                      unsigned long uaddr,
 86                                      enum dma_data_direction direction,
 87                                      struct dma_attrs *attrs);
 88         void            (*tce_free_rm)(struct iommu_table *tbl,
 89                                     long index,
 90                                     long npages);
 91         void            (*tce_flush_rm)(struct iommu_table *tbl);
 92 
 93         void __iomem *  (*ioremap)(phys_addr_t addr, unsigned long size,
 94                                    unsigned long flags, void *caller);
 95         void            (*iounmap)(volatile void __iomem *token);
 96 
 97 #ifdef CONFIG_PM
 98         void            (*iommu_save)(void);
 99         void            (*iommu_restore)(void);
100 #endif
101 #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
102         unsigned long   (*memory_block_size)(void);
103 #endif
104 #endif /* CONFIG_PPC64 */
105 
106         void            (*pci_dma_dev_setup)(struct pci_dev *dev);
107         void            (*pci_dma_bus_setup)(struct pci_bus *bus);
108 
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);
112 
113         int             (*probe)(void);
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);
121 
122         void            (*init_IRQ)(void);
123 
124         /* Return an irq, or NO_IRQ to indicate there are none pending. */
125         unsigned int    (*get_irq)(void);
126 
127         /* PCI stuff */
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
133                                 *bridge);
134 
135         /* To setup PHBs when using automatic OF platform driver for PCI */
136         int             (*pci_setup_phb)(struct pci_controller *host);
137 
138 #ifdef CONFIG_PCI_MSI
139         int             (*setup_msi_irqs)(struct pci_dev *dev,
140                                           int nvec, int type);
141         void            (*teardown_msi_irqs)(struct pci_dev *dev);
142 #endif
143 
144         void            (*restart)(char *cmd);
145         void            (*halt)(void);
146         void            (*panic)(char *str);
147         void            (*cpu_die)(void);
148 
149         long            (*time_init)(void); /* Optional, may be NULL */
150 
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);
156 
157         void            (*calibrate_decr)(void);
158 
159         void            (*progress)(char *, unsigned short);
160 
161         /* Interface for platform error logging */
162         void            (*log_error)(char *buf, unsigned int err_type, int fatal);
163 
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);
170 
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);
175 
176         /* Early exception handlers called in realmode */
177         int             (*hmi_exception_early)(struct pt_regs *regs);
178 
179         /* Called during machine check exception to retrive fixup address. */
180         bool            (*mce_check_early_recovery)(struct pt_regs *regs);
181 
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...).
185          */
186         long            (*feature_call)(unsigned int feature, ...);
187 
188         /* Get legacy PCI/IDE interrupt mapping */ 
189         int             (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
190         
191         /* Get access protection for /dev/mem */
192         pgprot_t        (*phys_mem_access_prot)(struct file *file,
193                                                 unsigned long pfn,
194                                                 unsigned long size,
195                                                 pgprot_t vma_prot);
196 
197         /*
198          * Function for waiting for work with reduced power in idle loop;
199          * called with interrupts disabled.
200          */
201         void            (*power_save)(void);
202 
203         /* Function to enable performance monitor counters for this
204            platform, called once per cpu. */
205         void            (*enable_pmcs)(void);
206 
207         /* Set DABR for this platform, leave empty for default implemenation */
208         int             (*set_dabr)(unsigned long dabr,
209                                     unsigned long dabrx);
210 
211         /* Set DAWR for this platform, leave empty for default implemenation */
212         int             (*set_dawr)(unsigned long dawr,
213                                     unsigned long dawrx);
214 
215 #ifdef CONFIG_PPC32     /* XXX for now */
216         /* A general init function, called by ppc_init in init/main.c.
217            May be NULL. */
218         void            (*init)(void);
219 
220         void            (*kgdb_map_scc)(void);
221 
222         /*
223          * optional PCI "hooks"
224          */
225         /* Called at then very end of pcibios_init() */
226         void (*pcibios_after_init)(void);
227 
228 #endif /* CONFIG_PPC32 */
229 
230         /* Called in indirect_* to avoid touching devices */
231         int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
232 
233         /* Called after PPC generic resource fixup to perform
234            machine specific fixups */
235         void (*pcibios_fixup_resources)(struct pci_dev *);
236 
237         /* Called for each PCI bus in the system when it's probed */
238         void (*pcibios_fixup_bus)(struct pci_bus *);
239 
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 *);
243 
244         /* Called after scan and before resource survey */
245         void (*pcibios_fixup_phb)(struct pci_controller *hose);
246 
247         /* Called during PCI resource reassignment */
248         resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned long type);
249 
250         /* Reset the secondary bus of bridge */
251         void  (*pcibios_reset_secondary_bus)(struct pci_dev *dev);
252 
253         /* Called to shutdown machine specific hardware not already controlled
254          * by other drivers.
255          */
256         void (*machine_shutdown)(void);
257 
258 #ifdef CONFIG_KEXEC
259         void (*kexec_cpu_down)(int crash_shutdown, int secondary);
260 
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.
265          */
266         int (*machine_kexec_prepare)(struct kimage *image);
267 
268         /* Called to perform the _real_ kexec.
269          * Do NOT allocate memory or fail here. We are past the point of
270          * no return.
271          */
272         void (*machine_kexec)(struct kimage *image);
273 #endif /* CONFIG_KEXEC */
274 
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.
280          */
281         void (*suspend_disable_irqs)(void);
282         void (*suspend_enable_irqs)(void);
283 #endif
284         int (*suspend_disable_cpu)(void);
285 
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);
289 #endif
290 
291 #ifdef CONFIG_ARCH_RANDOM
292         int (*get_random_long)(unsigned long *v);
293 #endif
294 };
295 
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);
301 
302 /*
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.
306  */
307 extern struct machdep_calls ppc_md;
308 extern struct machdep_calls *machine_id;
309 
310 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
311 
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 =
316 
317 #define machine_is(name) \
318         ({ \
319                 extern struct machdep_calls mach_##name \
320                         __attribute__((weak));           \
321                 machine_id == &mach_##name; \
322         })
323 
324 extern void probe_machine(void);
325 
326 #ifdef CONFIG_PPC_PMAC
327 /*
328  * Power macintoshes have either a CUDA, PMU or SMU controlling
329  * system reset, power, NVRAM, RTC.
330  */
331 typedef enum sys_ctrler_kind {
332         SYS_CTRLER_UNKNOWN = 0,
333         SYS_CTRLER_CUDA = 1,
334         SYS_CTRLER_PMU = 2,
335         SYS_CTRLER_SMU = 3,
336 } sys_ctrler_t;
337 extern sys_ctrler_t sys_ctrler;
338 
339 #endif /* CONFIG_PPC_PMAC */
340 
341 static inline void log_error(char *buf, unsigned int err_type, int fatal)
342 {
343         if (ppc_md.log_error)
344                 ppc_md.log_error(buf, err_type, fatal);
345 }
346 
347 #define __define_machine_initcall(mach, fn, id) \
348         static int __init __machine_initcall_##mach##_##fn(void) { \
349                 if (machine_is(mach)) return fn(); \
350                 return 0; \
351         } \
352         __define_initcall(__machine_initcall_##mach##_##fn, id);
353 
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)
370 
371 #endif /* __KERNEL__ */
372 #endif /* _ASM_POWERPC_MACHDEP_H */
373 

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