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>
15 #include <linux/export.h>
17 #include <asm/setup.h>
19 /* We export this macro for external modules like Alsa to know if
20 * ppc_md.feature_call is implemented or not
22 #define CONFIG_PPC_HAS_FEATURE_CALLS
30 struct pci_controller;
32 struct pci_host_bridge;
34 struct machdep_calls {
37 void (*hpte_invalidate)(unsigned long slot,
39 int bpsize, int apsize,
40 int ssize, int local);
41 long (*hpte_updatepp)(unsigned long slot,
44 int bpsize, int apsize,
45 int ssize, int local);
46 void (*hpte_updateboltedpp)(unsigned long newpp,
48 int psize, int ssize);
49 long (*hpte_insert)(unsigned long hpte_group,
54 int psize, int apsize,
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)(struct mm_struct *mm,
61 unsigned char *hpte_slot_array,
62 unsigned long addr, int psize);
64 /* special for kexec, to be called in real mode, linear mapping is
65 * destroyed as well */
66 void (*hpte_clear_all)(void);
68 int (*tce_build)(struct iommu_table *tbl,
72 enum dma_data_direction direction,
73 struct dma_attrs *attrs);
74 void (*tce_free)(struct iommu_table *tbl,
77 unsigned long (*tce_get)(struct iommu_table *tbl,
79 void (*tce_flush)(struct iommu_table *tbl);
81 /* _rm versions are for real mode use only */
82 int (*tce_build_rm)(struct iommu_table *tbl,
86 enum dma_data_direction direction,
87 struct dma_attrs *attrs);
88 void (*tce_free_rm)(struct iommu_table *tbl,
91 void (*tce_flush_rm)(struct iommu_table *tbl);
93 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
94 unsigned long flags, void *caller);
95 void (*iounmap)(volatile void __iomem *token);
98 void (*iommu_save)(void);
99 void (*iommu_restore)(void);
101 #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
102 unsigned long (*memory_block_size)(void);
104 #endif /* CONFIG_PPC64 */
106 void (*pci_dma_dev_setup)(struct pci_dev *dev);
107 void (*pci_dma_bus_setup)(struct pci_bus *bus);
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);
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);
122 void (*init_IRQ)(void);
124 /* Return an irq, or NO_IRQ to indicate there are none pending. */
125 unsigned int (*get_irq)(void);
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
135 /* To setup PHBs when using automatic OF platform driver for PCI */
136 int (*pci_setup_phb)(struct pci_controller *host);
138 #ifdef CONFIG_PCI_MSI
139 int (*msi_check_device)(struct pci_dev* dev,
141 int (*setup_msi_irqs)(struct pci_dev *dev,
143 void (*teardown_msi_irqs)(struct pci_dev *dev);
146 void (*restart)(char *cmd);
147 void (*power_off)(void);
149 void (*panic)(char *str);
150 void (*cpu_die)(void);
152 long (*time_init)(void); /* Optional, may be NULL */
154 int (*set_rtc_time)(struct rtc_time *);
155 void (*get_rtc_time)(struct rtc_time *);
156 unsigned long (*get_boot_time)(void);
157 unsigned char (*rtc_read_val)(int addr);
158 void (*rtc_write_val)(int addr, unsigned char val);
160 void (*calibrate_decr)(void);
162 void (*progress)(char *, unsigned short);
164 /* Interface for platform error logging */
165 void (*log_error)(char *buf, unsigned int err_type, int fatal);
167 unsigned char (*nvram_read_val)(int addr);
168 void (*nvram_write_val)(int addr, unsigned char val);
169 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
170 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
171 ssize_t (*nvram_size)(void);
172 void (*nvram_sync)(void);
174 /* Exception handlers */
175 int (*system_reset_exception)(struct pt_regs *regs);
176 int (*machine_check_exception)(struct pt_regs *regs);
178 /* Called during machine check exception to retrive fixup address. */
179 bool (*mce_check_early_recovery)(struct pt_regs *regs);
181 /* Motherboard/chipset features. This is a kind of general purpose
182 * hook used to control some machine specific features (like reset
183 * lines, chip power control, etc...).
185 long (*feature_call)(unsigned int feature, ...);
187 /* Get legacy PCI/IDE interrupt mapping */
188 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
190 /* Get access protection for /dev/mem */
191 pgprot_t (*phys_mem_access_prot)(struct file *file,
197 * Function for waiting for work with reduced power in idle loop;
198 * called with interrupts disabled.
200 void (*power_save)(void);
202 /* Function to enable performance monitor counters for this
203 platform, called once per cpu. */
204 void (*enable_pmcs)(void);
206 /* Set DABR for this platform, leave empty for default implemenation */
207 int (*set_dabr)(unsigned long dabr,
208 unsigned long dabrx);
210 /* Set DAWR for this platform, leave empty for default implemenation */
211 int (*set_dawr)(unsigned long dawr,
212 unsigned long dawrx);
214 #ifdef CONFIG_PPC32 /* XXX for now */
215 /* A general init function, called by ppc_init in init/main.c.
219 void (*kgdb_map_scc)(void);
222 * optional PCI "hooks"
224 /* Called at then very end of pcibios_init() */
225 void (*pcibios_after_init)(void);
227 #endif /* CONFIG_PPC32 */
229 /* Called in indirect_* to avoid touching devices */
230 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
232 /* Called after PPC generic resource fixup to perform
233 machine specific fixups */
234 void (*pcibios_fixup_resources)(struct pci_dev *);
236 /* Called for each PCI bus in the system when it's probed */
237 void (*pcibios_fixup_bus)(struct pci_bus *);
239 /* Called when pci_enable_device() is called. Returns 0 to
240 * allow assignment/enabling of the device. */
241 int (*pcibios_enable_device_hook)(struct pci_dev *);
243 /* Called after scan and before resource survey */
244 void (*pcibios_fixup_phb)(struct pci_controller *hose);
246 /* Called during PCI resource reassignment */
247 resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned long type);
249 /* Reset the secondary bus of bridge */
250 void (*pcibios_reset_secondary_bus)(struct pci_dev *dev);
252 /* Called to shutdown machine specific hardware not already controlled
255 void (*machine_shutdown)(void);
258 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
260 /* Called to do what every setup is needed on image and the
261 * reboot code buffer. Returns 0 on success.
262 * Provide your own (maybe dummy) implementation if your platform
263 * claims to support kexec.
265 int (*machine_kexec_prepare)(struct kimage *image);
267 /* Called to perform the _real_ kexec.
268 * Do NOT allocate memory or fail here. We are past the point of
271 void (*machine_kexec)(struct kimage *image);
272 #endif /* CONFIG_KEXEC */
274 #ifdef CONFIG_SUSPEND
275 /* These are called to disable and enable, respectively, IRQs when
276 * entering a suspend state. If NULL, then the generic versions
277 * will be called. The generic versions disable/enable the
278 * decrementer along with interrupts.
280 void (*suspend_disable_irqs)(void);
281 void (*suspend_enable_irqs)(void);
283 int (*suspend_disable_cpu)(void);
285 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
286 ssize_t (*cpu_probe)(const char *, size_t);
287 ssize_t (*cpu_release)(const char *, size_t);
290 #ifdef CONFIG_ARCH_RANDOM
291 int (*get_random_long)(unsigned long *v);
294 #ifdef CONFIG_MEMORY_HOTREMOVE
295 int (*remove_memory)(u64, u64);
299 extern void e500_idle(void);
300 extern void power4_idle(void);
301 extern void power7_idle(void);
302 extern void ppc6xx_idle(void);
303 extern void book3e_idle(void);
306 * ppc_md contains a copy of the machine description structure for the
307 * current platform. machine_id contains the initial address where the
308 * description was found during boot.
310 extern struct machdep_calls ppc_md;
311 extern struct machdep_calls *machine_id;
313 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
315 #define define_machine(name) \
316 extern struct machdep_calls mach_##name; \
317 EXPORT_SYMBOL(mach_##name); \
318 struct machdep_calls mach_##name __machine_desc =
320 #define machine_is(name) \
322 extern struct machdep_calls mach_##name \
323 __attribute__((weak)); \
324 machine_id == &mach_##name; \
327 extern void probe_machine(void);
329 extern char cmd_line[COMMAND_LINE_SIZE];
331 #ifdef CONFIG_PPC_PMAC
333 * Power macintoshes have either a CUDA, PMU or SMU controlling
334 * system reset, power, NVRAM, RTC.
336 typedef enum sys_ctrler_kind {
337 SYS_CTRLER_UNKNOWN = 0,
342 extern sys_ctrler_t sys_ctrler;
344 #endif /* CONFIG_PPC_PMAC */
347 /* Functions to produce codes on the leds.
348 * The SRC code should be unique for the message category and should
349 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
350 * and (for boot & dump) should be sorted numerically in the order
353 /* Print a boot progress message. */
354 void ppc64_boot_msg(unsigned int src, const char *msg);
356 static inline void log_error(char *buf, unsigned int err_type, int fatal)
358 if (ppc_md.log_error)
359 ppc_md.log_error(buf, err_type, fatal);
362 #define __define_machine_initcall(mach, fn, id) \
363 static int __init __machine_initcall_##mach##_##fn(void) { \
364 if (machine_is(mach)) return fn(); \
367 __define_initcall(__machine_initcall_##mach##_##fn, id);
369 #define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1)
370 #define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s)
371 #define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2)
372 #define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s)
373 #define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3)
374 #define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s)
375 #define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4)
376 #define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s)
377 #define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5)
378 #define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s)
379 #define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs)
380 #define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6)
381 #define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s)
382 #define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7)
383 #define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s)
385 #endif /* __KERNEL__ */
386 #endif /* _ASM_POWERPC_MACHDEP_H */