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
16 #include <asm/setup.h>
17
18 /* We export this macro for external modules like Alsa to know if
19 * ppc_md.feature_call is implemented or not
20 */
21 #define CONFIG_PPC_HAS_FEATURE_CALLS
22
23 struct pt_regs;
24 struct pci_bus;
25 struct device_node;
26 struct iommu_table;
27 struct rtc_time;
28 struct file;
29 struct pci_controller;
30 struct kimage;
31
32 #ifdef CONFIG_SMP
33 struct smp_ops_t {
34 void (*message_pass)(int target, int msg);
35 int (*probe)(void);
36 void (*kick_cpu)(int nr);
37 void (*setup_cpu)(int nr);
38 void (*bringup_done)(void);
39 void (*take_timebase)(void);
40 void (*give_timebase)(void);
41 int (*cpu_disable)(void);
42 void (*cpu_die)(unsigned int nr);
43 int (*cpu_bootable)(unsigned int nr);
44 };
45 #endif
46
47 struct machdep_calls {
48 char *name;
49 #ifdef CONFIG_PPC64
50 void (*hpte_invalidate)(unsigned long slot,
51 unsigned long va,
52 int psize, int ssize,
53 int local);
54 long (*hpte_updatepp)(unsigned long slot,
55 unsigned long newpp,
56 unsigned long va,
57 int psize, int ssize,
58 int local);
59 void (*hpte_updateboltedpp)(unsigned long newpp,
60 unsigned long ea,
61 int psize, int ssize);
62 long (*hpte_insert)(unsigned long hpte_group,
63 unsigned long va,
64 unsigned long prpn,
65 unsigned long rflags,
66 unsigned long vflags,
67 int psize, int ssize);
68 long (*hpte_remove)(unsigned long hpte_group);
69 void (*hpte_removebolted)(unsigned long ea,
70 int psize, int ssize);
71 void (*flush_hash_range)(unsigned long number, int local);
72
73 /* special for kexec, to be called in real mode, linear mapping is
74 * destroyed as well */
75 void (*hpte_clear_all)(void);
76
77 int (*tce_build)(struct iommu_table *tbl,
78 long index,
79 long npages,
80 unsigned long uaddr,
81 enum dma_data_direction direction,
82 struct dma_attrs *attrs);
83 void (*tce_free)(struct iommu_table *tbl,
84 long index,
85 long npages);
86 unsigned long (*tce_get)(struct iommu_table *tbl,
87 long index);
88 void (*tce_flush)(struct iommu_table *tbl);
89
90 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
91 unsigned long flags, void *caller);
92 void (*iounmap)(volatile void __iomem *token);
93
94 #ifdef CONFIG_PM
95 void (*iommu_save)(void);
96 void (*iommu_restore)(void);
97 #endif
98 #endif /* CONFIG_PPC64 */
99
100 void (*pci_dma_dev_setup)(struct pci_dev *dev);
101 void (*pci_dma_bus_setup)(struct pci_bus *bus);
102
103 /* Platform set_dma_mask override */
104 int (*dma_set_mask)(struct device *dev, u64 dma_mask);
105
106 int (*probe)(void);
107 void (*setup_arch)(void); /* Optional, may be NULL */
108 void (*init_early)(void);
109 /* Optional, may be NULL. */
110 void (*show_cpuinfo)(struct seq_file *m);
111 void (*show_percpuinfo)(struct seq_file *m, int i);
112
113 void (*init_IRQ)(void);
114
115 /* Return an irq, or NO_IRQ to indicate there are none pending.
116 * If for some reason there is no irq, but the interrupt
117 * shouldn't be counted as spurious, return NO_IRQ_IGNORE. */
118 unsigned int (*get_irq)(void);
119
120 /* PCI stuff */
121 /* Called after scanning the bus, before allocating resources */
122 void (*pcibios_fixup)(void);
123 int (*pci_probe_mode)(struct pci_bus *);
124 void (*pci_irq_fixup)(struct pci_dev *dev);
125
126 /* To setup PHBs when using automatic OF platform driver for PCI */
127 int (*pci_setup_phb)(struct pci_controller *host);
128
129 #ifdef CONFIG_PCI_MSI
130 int (*msi_check_device)(struct pci_dev* dev,
131 int nvec, int type);
132 int (*setup_msi_irqs)(struct pci_dev *dev,
133 int nvec, int type);
134 void (*teardown_msi_irqs)(struct pci_dev *dev);
135 #endif
136
137 void (*restart)(char *cmd);
138 void (*power_off)(void);
139 void (*halt)(void);
140 void (*panic)(char *str);
141 void (*cpu_die)(void);
142
143 long (*time_init)(void); /* Optional, may be NULL */
144
145 int (*set_rtc_time)(struct rtc_time *);
146 void (*get_rtc_time)(struct rtc_time *);
147 unsigned long (*get_boot_time)(void);
148 unsigned char (*rtc_read_val)(int addr);
149 void (*rtc_write_val)(int addr, unsigned char val);
150
151 void (*calibrate_decr)(void);
152
153 void (*progress)(char *, unsigned short);
154
155 /* Interface for platform error logging */
156 void (*log_error)(char *buf, unsigned int err_type, int fatal);
157
158 unsigned char (*nvram_read_val)(int addr);
159 void (*nvram_write_val)(int addr, unsigned char val);
160 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
161 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
162 ssize_t (*nvram_size)(void);
163 void (*nvram_sync)(void);
164
165 /* Exception handlers */
166 int (*system_reset_exception)(struct pt_regs *regs);
167 int (*machine_check_exception)(struct pt_regs *regs);
168
169 /* Motherboard/chipset features. This is a kind of general purpose
170 * hook used to control some machine specific features (like reset
171 * lines, chip power control, etc...).
172 */
173 long (*feature_call)(unsigned int feature, ...);
174
175 /* Get legacy PCI/IDE interrupt mapping */
176 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
177
178 /* Get access protection for /dev/mem */
179 pgprot_t (*phys_mem_access_prot)(struct file *file,
180 unsigned long pfn,
181 unsigned long size,
182 pgprot_t vma_prot);
183
184 /* Idle loop for this platform, leave empty for default idle loop */
185 void (*idle_loop)(void);
186
187 /*
188 * Function for waiting for work with reduced power in idle loop;
189 * called with interrupts disabled.
190 */
191 void (*power_save)(void);
192
193 /* Function to enable performance monitor counters for this
194 platform, called once per cpu. */
195 void (*enable_pmcs)(void);
196
197 /* Set DABR for this platform, leave empty for default implemenation */
198 int (*set_dabr)(unsigned long dabr);
199
200 #ifdef CONFIG_PPC32 /* XXX for now */
201 /* A general init function, called by ppc_init in init/main.c.
202 May be NULL. */
203 void (*init)(void);
204
205 void (*kgdb_map_scc)(void);
206
207 /*
208 * optional PCI "hooks"
209 */
210 /* Called at then very end of pcibios_init() */
211 void (*pcibios_after_init)(void);
212
213 #endif /* CONFIG_PPC32 */
214
215 /* Called in indirect_* to avoid touching devices */
216 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
217
218 /* Called after PPC generic resource fixup to perform
219 machine specific fixups */
220 void (*pcibios_fixup_resources)(struct pci_dev *);
221
222 /* Called for each PCI bus in the system when it's probed */
223 void (*pcibios_fixup_bus)(struct pci_bus *);
224
225 /* Called when pci_enable_device() is called. Returns 0 to
226 * allow assignment/enabling of the device. */
227 int (*pcibios_enable_device_hook)(struct pci_dev *);
228
229 /* Called to shutdown machine specific hardware not already controlled
230 * by other drivers.
231 */
232 void (*machine_shutdown)(void);
233
234 #ifdef CONFIG_KEXEC
235 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
236
237 /* Called to do what every setup is needed on image and the
238 * reboot code buffer. Returns 0 on success.
239 * Provide your own (maybe dummy) implementation if your platform
240 * claims to support kexec.
241 */
242 int (*machine_kexec_prepare)(struct kimage *image);
243
244 /* Called to perform the _real_ kexec.
245 * Do NOT allocate memory or fail here. We are past the point of
246 * no return.
247 */
248 void (*machine_kexec)(struct kimage *image);
249 #endif /* CONFIG_KEXEC */
250
251 #ifdef CONFIG_SUSPEND
252 /* These are called to disable and enable, respectively, IRQs when
253 * entering a suspend state. If NULL, then the generic versions
254 * will be called. The generic versions disable/enable the
255 * decrementer along with interrupts.
256 */
257 void (*suspend_disable_irqs)(void);
258 void (*suspend_enable_irqs)(void);
259 #endif
260 int (*suspend_disable_cpu)(void);
261
262 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
263 ssize_t (*cpu_probe)(const char *, size_t);
264 ssize_t (*cpu_release)(const char *, size_t);
265 #endif
266 };
267
268 extern void e500_idle(void);
269 extern void power4_idle(void);
270 extern void ppc6xx_idle(void);
271 extern void book3e_idle(void);
272
273 /*
274 * ppc_md contains a copy of the machine description structure for the
275 * current platform. machine_id contains the initial address where the
276 * description was found during boot.
277 */
278 extern struct machdep_calls ppc_md;
279 extern struct machdep_calls *machine_id;
280
281 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
282
283 #define define_machine(name) \
284 extern struct machdep_calls mach_##name; \
285 EXPORT_SYMBOL(mach_##name); \
286 struct machdep_calls mach_##name __machine_desc =
287
288 #define machine_is(name) \
289 ({ \
290 extern struct machdep_calls mach_##name \
291 __attribute__((weak)); \
292 machine_id == &mach_##name; \
293 })
294
295 extern void probe_machine(void);
296
297 extern char cmd_line[COMMAND_LINE_SIZE];
298
299 #ifdef CONFIG_PPC_PMAC
300 /*
301 * Power macintoshes have either a CUDA, PMU or SMU controlling
302 * system reset, power, NVRAM, RTC.
303 */
304 typedef enum sys_ctrler_kind {
305 SYS_CTRLER_UNKNOWN = 0,
306 SYS_CTRLER_CUDA = 1,
307 SYS_CTRLER_PMU = 2,
308 SYS_CTRLER_SMU = 3,
309 } sys_ctrler_t;
310 extern sys_ctrler_t sys_ctrler;
311
312 #endif /* CONFIG_PPC_PMAC */
313
314 #ifdef CONFIG_SMP
315 /* Poor default implementations */
316 extern void __devinit smp_generic_give_timebase(void);
317 extern void __devinit smp_generic_take_timebase(void);
318 #endif /* CONFIG_SMP */
319
320
321 /* Functions to produce codes on the leds.
322 * The SRC code should be unique for the message category and should
323 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
324 * and (for boot & dump) should be sorted numerically in the order
325 * the events occur.
326 */
327 /* Print a boot progress message. */
328 void ppc64_boot_msg(unsigned int src, const char *msg);
329
log_error(char * buf,unsigned int err_type,int fatal)330 static inline void log_error(char *buf, unsigned int err_type, int fatal)
331 {
332 if (ppc_md.log_error)
333 ppc_md.log_error(buf, err_type, fatal);
334 }
335
336 #define __define_machine_initcall(mach,level,fn,id) \
337 static int __init __machine_initcall_##mach##_##fn(void) { \
338 if (machine_is(mach)) return fn(); \
339 return 0; \
340 } \
341 __define_initcall(level,__machine_initcall_##mach##_##fn,id);
342
343 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1)
344 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s)
345 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2)
346 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
347 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3)
348 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s)
349 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4)
350 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s)
351 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5)
352 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s)
353 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs)
354 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6)
355 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s)
356 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7)
357 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s)
358
359 #endif /* __KERNEL__ */
360 #endif /* _ASM_POWERPC_MACHDEP_H */
361