machdep.h 11 KB

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  1. #ifndef _ASM_POWERPC_MACHDEP_H
  2. #define _ASM_POWERPC_MACHDEP_H
  3. #ifdef __KERNEL__
  4. /*
  5. * This program is free software; you can redistribute it and/or
  6. * modify it under the terms of the GNU General Public License
  7. * as published by the Free Software Foundation; either version
  8. * 2 of the License, or (at your option) any later version.
  9. */
  10. #include <linux/seq_file.h>
  11. #include <linux/init.h>
  12. #include <linux/dma-mapping.h>
  13. #include <asm/setup.h>
  14. /* We export this macro for external modules like Alsa to know if
  15. * ppc_md.feature_call is implemented or not
  16. */
  17. #define CONFIG_PPC_HAS_FEATURE_CALLS
  18. struct pt_regs;
  19. struct pci_bus;
  20. struct device_node;
  21. struct iommu_table;
  22. struct rtc_time;
  23. struct file;
  24. struct pci_controller;
  25. struct kimage;
  26. struct machdep_calls {
  27. char *name;
  28. #ifdef CONFIG_PPC64
  29. void (*hpte_invalidate)(unsigned long slot,
  30. unsigned long va,
  31. int psize, int ssize,
  32. int local);
  33. long (*hpte_updatepp)(unsigned long slot,
  34. unsigned long newpp,
  35. unsigned long va,
  36. int psize, int ssize,
  37. int local);
  38. void (*hpte_updateboltedpp)(unsigned long newpp,
  39. unsigned long ea,
  40. int psize, int ssize);
  41. long (*hpte_insert)(unsigned long hpte_group,
  42. unsigned long va,
  43. unsigned long prpn,
  44. unsigned long rflags,
  45. unsigned long vflags,
  46. int psize, int ssize);
  47. long (*hpte_remove)(unsigned long hpte_group);
  48. void (*hpte_removebolted)(unsigned long ea,
  49. int psize, int ssize);
  50. void (*flush_hash_range)(unsigned long number, int local);
  51. /* special for kexec, to be called in real mode, linear mapping is
  52. * destroyed as well */
  53. void (*hpte_clear_all)(void);
  54. int (*tce_build)(struct iommu_table *tbl,
  55. long index,
  56. long npages,
  57. unsigned long uaddr,
  58. enum dma_data_direction direction,
  59. struct dma_attrs *attrs);
  60. void (*tce_free)(struct iommu_table *tbl,
  61. long index,
  62. long npages);
  63. unsigned long (*tce_get)(struct iommu_table *tbl,
  64. long index);
  65. void (*tce_flush)(struct iommu_table *tbl);
  66. void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
  67. unsigned long flags, void *caller);
  68. void (*iounmap)(volatile void __iomem *token);
  69. #ifdef CONFIG_PM
  70. void (*iommu_save)(void);
  71. void (*iommu_restore)(void);
  72. #endif
  73. #endif /* CONFIG_PPC64 */
  74. void (*pci_dma_dev_setup)(struct pci_dev *dev);
  75. void (*pci_dma_bus_setup)(struct pci_bus *bus);
  76. /* Platform set_dma_mask override */
  77. int (*dma_set_mask)(struct device *dev, u64 dma_mask);
  78. int (*probe)(void);
  79. void (*setup_arch)(void); /* Optional, may be NULL */
  80. void (*init_early)(void);
  81. /* Optional, may be NULL. */
  82. void (*show_cpuinfo)(struct seq_file *m);
  83. void (*show_percpuinfo)(struct seq_file *m, int i);
  84. void (*init_IRQ)(void);
  85. /* Return an irq, or NO_IRQ to indicate there are none pending.
  86. * If for some reason there is no irq, but the interrupt
  87. * shouldn't be counted as spurious, return NO_IRQ_IGNORE. */
  88. unsigned int (*get_irq)(void);
  89. /* PCI stuff */
  90. /* Called after scanning the bus, before allocating resources */
  91. void (*pcibios_fixup)(void);
  92. int (*pci_probe_mode)(struct pci_bus *);
  93. void (*pci_irq_fixup)(struct pci_dev *dev);
  94. /* To setup PHBs when using automatic OF platform driver for PCI */
  95. int (*pci_setup_phb)(struct pci_controller *host);
  96. #ifdef CONFIG_PCI_MSI
  97. int (*msi_check_device)(struct pci_dev* dev,
  98. int nvec, int type);
  99. int (*setup_msi_irqs)(struct pci_dev *dev,
  100. int nvec, int type);
  101. void (*teardown_msi_irqs)(struct pci_dev *dev);
  102. #endif
  103. void (*restart)(char *cmd);
  104. void (*power_off)(void);
  105. void (*halt)(void);
  106. void (*panic)(char *str);
  107. void (*cpu_die)(void);
  108. long (*time_init)(void); /* Optional, may be NULL */
  109. int (*set_rtc_time)(struct rtc_time *);
  110. void (*get_rtc_time)(struct rtc_time *);
  111. unsigned long (*get_boot_time)(void);
  112. unsigned char (*rtc_read_val)(int addr);
  113. void (*rtc_write_val)(int addr, unsigned char val);
  114. void (*calibrate_decr)(void);
  115. void (*progress)(char *, unsigned short);
  116. /* Interface for platform error logging */
  117. void (*log_error)(char *buf, unsigned int err_type, int fatal);
  118. unsigned char (*nvram_read_val)(int addr);
  119. void (*nvram_write_val)(int addr, unsigned char val);
  120. ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
  121. ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
  122. ssize_t (*nvram_size)(void);
  123. void (*nvram_sync)(void);
  124. /* Exception handlers */
  125. int (*system_reset_exception)(struct pt_regs *regs);
  126. int (*machine_check_exception)(struct pt_regs *regs);
  127. /* Motherboard/chipset features. This is a kind of general purpose
  128. * hook used to control some machine specific features (like reset
  129. * lines, chip power control, etc...).
  130. */
  131. long (*feature_call)(unsigned int feature, ...);
  132. /* Get legacy PCI/IDE interrupt mapping */
  133. int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
  134. /* Get access protection for /dev/mem */
  135. pgprot_t (*phys_mem_access_prot)(struct file *file,
  136. unsigned long pfn,
  137. unsigned long size,
  138. pgprot_t vma_prot);
  139. /* Idle loop for this platform, leave empty for default idle loop */
  140. void (*idle_loop)(void);
  141. /*
  142. * Function for waiting for work with reduced power in idle loop;
  143. * called with interrupts disabled.
  144. */
  145. void (*power_save)(void);
  146. /* Function to enable performance monitor counters for this
  147. platform, called once per cpu. */
  148. void (*enable_pmcs)(void);
  149. /* Set DABR for this platform, leave empty for default implemenation */
  150. int (*set_dabr)(unsigned long dabr);
  151. #ifdef CONFIG_PPC32 /* XXX for now */
  152. /* A general init function, called by ppc_init in init/main.c.
  153. May be NULL. */
  154. void (*init)(void);
  155. void (*kgdb_map_scc)(void);
  156. /*
  157. * optional PCI "hooks"
  158. */
  159. /* Called at then very end of pcibios_init() */
  160. void (*pcibios_after_init)(void);
  161. #endif /* CONFIG_PPC32 */
  162. /* Called in indirect_* to avoid touching devices */
  163. int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
  164. /* Called after PPC generic resource fixup to perform
  165. machine specific fixups */
  166. void (*pcibios_fixup_resources)(struct pci_dev *);
  167. /* Called for each PCI bus in the system when it's probed */
  168. void (*pcibios_fixup_bus)(struct pci_bus *);
  169. /* Called when pci_enable_device() is called. Returns 0 to
  170. * allow assignment/enabling of the device. */
  171. int (*pcibios_enable_device_hook)(struct pci_dev *);
  172. /* Called to shutdown machine specific hardware not already controlled
  173. * by other drivers.
  174. */
  175. void (*machine_shutdown)(void);
  176. #ifdef CONFIG_KEXEC
  177. void (*kexec_cpu_down)(int crash_shutdown, int secondary);
  178. /* Called to do what every setup is needed on image and the
  179. * reboot code buffer. Returns 0 on success.
  180. * Provide your own (maybe dummy) implementation if your platform
  181. * claims to support kexec.
  182. */
  183. int (*machine_kexec_prepare)(struct kimage *image);
  184. /* Called to perform the _real_ kexec.
  185. * Do NOT allocate memory or fail here. We are past the point of
  186. * no return.
  187. */
  188. void (*machine_kexec)(struct kimage *image);
  189. #endif /* CONFIG_KEXEC */
  190. #ifdef CONFIG_SUSPEND
  191. /* These are called to disable and enable, respectively, IRQs when
  192. * entering a suspend state. If NULL, then the generic versions
  193. * will be called. The generic versions disable/enable the
  194. * decrementer along with interrupts.
  195. */
  196. void (*suspend_disable_irqs)(void);
  197. void (*suspend_enable_irqs)(void);
  198. #endif
  199. int (*suspend_disable_cpu)(void);
  200. #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
  201. ssize_t (*cpu_probe)(const char *, size_t);
  202. ssize_t (*cpu_release)(const char *, size_t);
  203. #endif
  204. };
  205. extern void e500_idle(void);
  206. extern void power4_idle(void);
  207. extern void power7_idle(void);
  208. extern void ppc6xx_idle(void);
  209. extern void book3e_idle(void);
  210. /*
  211. * ppc_md contains a copy of the machine description structure for the
  212. * current platform. machine_id contains the initial address where the
  213. * description was found during boot.
  214. */
  215. extern struct machdep_calls ppc_md;
  216. extern struct machdep_calls *machine_id;
  217. #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
  218. #define define_machine(name) \
  219. extern struct machdep_calls mach_##name; \
  220. EXPORT_SYMBOL(mach_##name); \
  221. struct machdep_calls mach_##name __machine_desc =
  222. #define machine_is(name) \
  223. ({ \
  224. extern struct machdep_calls mach_##name \
  225. __attribute__((weak)); \
  226. machine_id == &mach_##name; \
  227. })
  228. extern void probe_machine(void);
  229. extern char cmd_line[COMMAND_LINE_SIZE];
  230. #ifdef CONFIG_PPC_PMAC
  231. /*
  232. * Power macintoshes have either a CUDA, PMU or SMU controlling
  233. * system reset, power, NVRAM, RTC.
  234. */
  235. typedef enum sys_ctrler_kind {
  236. SYS_CTRLER_UNKNOWN = 0,
  237. SYS_CTRLER_CUDA = 1,
  238. SYS_CTRLER_PMU = 2,
  239. SYS_CTRLER_SMU = 3,
  240. } sys_ctrler_t;
  241. extern sys_ctrler_t sys_ctrler;
  242. #endif /* CONFIG_PPC_PMAC */
  243. /* Functions to produce codes on the leds.
  244. * The SRC code should be unique for the message category and should
  245. * be limited to the lower 24 bits (the upper 8 are set by these funcs),
  246. * and (for boot & dump) should be sorted numerically in the order
  247. * the events occur.
  248. */
  249. /* Print a boot progress message. */
  250. void ppc64_boot_msg(unsigned int src, const char *msg);
  251. static inline void log_error(char *buf, unsigned int err_type, int fatal)
  252. {
  253. if (ppc_md.log_error)
  254. ppc_md.log_error(buf, err_type, fatal);
  255. }
  256. #define __define_machine_initcall(mach,level,fn,id) \
  257. static int __init __machine_initcall_##mach##_##fn(void) { \
  258. if (machine_is(mach)) return fn(); \
  259. return 0; \
  260. } \
  261. __define_initcall(level,__machine_initcall_##mach##_##fn,id);
  262. #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1)
  263. #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s)
  264. #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2)
  265. #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
  266. #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3)
  267. #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s)
  268. #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4)
  269. #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s)
  270. #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5)
  271. #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s)
  272. #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs)
  273. #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6)
  274. #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s)
  275. #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7)
  276. #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s)
  277. #endif /* __KERNEL__ */
  278. #endif /* _ASM_POWERPC_MACHDEP_H */