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;
33 struct machdep_calls {
36 void (*hpte_invalidate)(unsigned long slot,
40 long (*hpte_updatepp)(unsigned long slot,
45 void (*hpte_updateboltedpp)(unsigned long newpp,
47 int psize, int ssize);
48 long (*hpte_insert)(unsigned long hpte_group,
53 int psize, int ssize);
54 long (*hpte_remove)(unsigned long hpte_group);
55 void (*hpte_removebolted)(unsigned long ea,
56 int psize, int ssize);
57 void (*flush_hash_range)(unsigned long number, int local);
59 /* special for kexec, to be called in real mode, linear mapping is
60 * destroyed as well */
61 void (*hpte_clear_all)(void);
63 int (*tce_build)(struct iommu_table *tbl,
67 enum dma_data_direction direction,
68 struct dma_attrs *attrs);
69 void (*tce_free)(struct iommu_table *tbl,
72 unsigned long (*tce_get)(struct iommu_table *tbl,
74 void (*tce_flush)(struct iommu_table *tbl);
76 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
77 unsigned long flags, void *caller);
78 void (*iounmap)(volatile void __iomem *token);
81 void (*iommu_save)(void);
82 void (*iommu_restore)(void);
84 #endif /* CONFIG_PPC64 */
86 void (*pci_dma_dev_setup)(struct pci_dev *dev);
87 void (*pci_dma_bus_setup)(struct pci_bus *bus);
89 /* Platform set_dma_mask and dma_get_required_mask overrides */
90 int (*dma_set_mask)(struct device *dev, u64 dma_mask);
91 u64 (*dma_get_required_mask)(struct device *dev);
94 void (*setup_arch)(void); /* Optional, may be NULL */
95 void (*init_early)(void);
96 /* Optional, may be NULL. */
97 void (*show_cpuinfo)(struct seq_file *m);
98 void (*show_percpuinfo)(struct seq_file *m, int i);
100 void (*init_IRQ)(void);
102 /* Return an irq, or NO_IRQ to indicate there are none pending.
103 * If for some reason there is no irq, but the interrupt
104 * shouldn't be counted as spurious, return NO_IRQ_IGNORE. */
105 unsigned int (*get_irq)(void);
108 /* Called after scanning the bus, before allocating resources */
109 void (*pcibios_fixup)(void);
110 int (*pci_probe_mode)(struct pci_bus *);
111 void (*pci_irq_fixup)(struct pci_dev *dev);
113 /* To setup PHBs when using automatic OF platform driver for PCI */
114 int (*pci_setup_phb)(struct pci_controller *host);
116 #ifdef CONFIG_PCI_MSI
117 int (*msi_check_device)(struct pci_dev* dev,
119 int (*setup_msi_irqs)(struct pci_dev *dev,
121 void (*teardown_msi_irqs)(struct pci_dev *dev);
124 void (*restart)(char *cmd);
125 void (*power_off)(void);
127 void (*panic)(char *str);
128 void (*cpu_die)(void);
130 long (*time_init)(void); /* Optional, may be NULL */
132 int (*set_rtc_time)(struct rtc_time *);
133 void (*get_rtc_time)(struct rtc_time *);
134 unsigned long (*get_boot_time)(void);
135 unsigned char (*rtc_read_val)(int addr);
136 void (*rtc_write_val)(int addr, unsigned char val);
138 void (*calibrate_decr)(void);
140 void (*progress)(char *, unsigned short);
142 /* Interface for platform error logging */
143 void (*log_error)(char *buf, unsigned int err_type, int fatal);
145 unsigned char (*nvram_read_val)(int addr);
146 void (*nvram_write_val)(int addr, unsigned char val);
147 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
148 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
149 ssize_t (*nvram_size)(void);
150 void (*nvram_sync)(void);
152 /* Exception handlers */
153 int (*system_reset_exception)(struct pt_regs *regs);
154 int (*machine_check_exception)(struct pt_regs *regs);
156 /* Motherboard/chipset features. This is a kind of general purpose
157 * hook used to control some machine specific features (like reset
158 * lines, chip power control, etc...).
160 long (*feature_call)(unsigned int feature, ...);
162 /* Get legacy PCI/IDE interrupt mapping */
163 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
165 /* Get access protection for /dev/mem */
166 pgprot_t (*phys_mem_access_prot)(struct file *file,
171 /* Idle loop for this platform, leave empty for default idle loop */
172 void (*idle_loop)(void);
175 * Function for waiting for work with reduced power in idle loop;
176 * called with interrupts disabled.
178 void (*power_save)(void);
180 /* Function to enable performance monitor counters for this
181 platform, called once per cpu. */
182 void (*enable_pmcs)(void);
184 /* Set DABR for this platform, leave empty for default implemenation */
185 int (*set_dabr)(unsigned long dabr);
187 #ifdef CONFIG_PPC32 /* XXX for now */
188 /* A general init function, called by ppc_init in init/main.c.
192 void (*kgdb_map_scc)(void);
195 * optional PCI "hooks"
197 /* Called at then very end of pcibios_init() */
198 void (*pcibios_after_init)(void);
200 #endif /* CONFIG_PPC32 */
202 /* Called in indirect_* to avoid touching devices */
203 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
205 /* Called after PPC generic resource fixup to perform
206 machine specific fixups */
207 void (*pcibios_fixup_resources)(struct pci_dev *);
209 /* Called for each PCI bus in the system when it's probed */
210 void (*pcibios_fixup_bus)(struct pci_bus *);
212 /* Called when pci_enable_device() is called. Returns 0 to
213 * allow assignment/enabling of the device. */
214 int (*pcibios_enable_device_hook)(struct pci_dev *);
216 /* Called to shutdown machine specific hardware not already controlled
219 void (*machine_shutdown)(void);
222 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
224 /* Called to do what every setup is needed on image and the
225 * reboot code buffer. Returns 0 on success.
226 * Provide your own (maybe dummy) implementation if your platform
227 * claims to support kexec.
229 int (*machine_kexec_prepare)(struct kimage *image);
231 /* Called to perform the _real_ kexec.
232 * Do NOT allocate memory or fail here. We are past the point of
235 void (*machine_kexec)(struct kimage *image);
236 #endif /* CONFIG_KEXEC */
238 #ifdef CONFIG_SUSPEND
239 /* These are called to disable and enable, respectively, IRQs when
240 * entering a suspend state. If NULL, then the generic versions
241 * will be called. The generic versions disable/enable the
242 * decrementer along with interrupts.
244 void (*suspend_disable_irqs)(void);
245 void (*suspend_enable_irqs)(void);
247 int (*suspend_disable_cpu)(void);
249 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
250 ssize_t (*cpu_probe)(const char *, size_t);
251 ssize_t (*cpu_release)(const char *, size_t);
255 extern void e500_idle(void);
256 extern void power4_idle(void);
257 extern void power7_idle(void);
258 extern void ppc6xx_idle(void);
259 extern void book3e_idle(void);
262 * ppc_md contains a copy of the machine description structure for the
263 * current platform. machine_id contains the initial address where the
264 * description was found during boot.
266 extern struct machdep_calls ppc_md;
267 extern struct machdep_calls *machine_id;
269 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
271 #define define_machine(name) \
272 extern struct machdep_calls mach_##name; \
273 EXPORT_SYMBOL(mach_##name); \
274 struct machdep_calls mach_##name __machine_desc =
276 #define machine_is(name) \
278 extern struct machdep_calls mach_##name \
279 __attribute__((weak)); \
280 machine_id == &mach_##name; \
283 extern void probe_machine(void);
285 extern char cmd_line[COMMAND_LINE_SIZE];
287 #ifdef CONFIG_PPC_PMAC
289 * Power macintoshes have either a CUDA, PMU or SMU controlling
290 * system reset, power, NVRAM, RTC.
292 typedef enum sys_ctrler_kind {
293 SYS_CTRLER_UNKNOWN = 0,
298 extern sys_ctrler_t sys_ctrler;
300 #endif /* CONFIG_PPC_PMAC */
303 /* Functions to produce codes on the leds.
304 * The SRC code should be unique for the message category and should
305 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
306 * and (for boot & dump) should be sorted numerically in the order
309 /* Print a boot progress message. */
310 void ppc64_boot_msg(unsigned int src, const char *msg);
312 static inline void log_error(char *buf, unsigned int err_type, int fatal)
314 if (ppc_md.log_error)
315 ppc_md.log_error(buf, err_type, fatal);
318 #define __define_machine_initcall(mach,level,fn,id) \
319 static int __init __machine_initcall_##mach##_##fn(void) { \
320 if (machine_is(mach)) return fn(); \
323 __define_initcall(level,__machine_initcall_##mach##_##fn,id);
325 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1)
326 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s)
327 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2)
328 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
329 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3)
330 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s)
331 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4)
332 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s)
333 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5)
334 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s)
335 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs)
336 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6)
337 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s)
338 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7)
339 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s)
341 #endif /* __KERNEL__ */
342 #endif /* _ASM_POWERPC_MACHDEP_H */