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 #ifdef CONFIG_KEXEC
31 struct kimage;
32 #endif
33
34 #ifdef CONFIG_SMP
35 struct smp_ops_t {
36 void (*message_pass)(int target, int msg);
37 int (*probe)(void);
38 void (*kick_cpu)(int nr);
39 void (*setup_cpu)(int nr);
40 void (*take_timebase)(void);
41 void (*give_timebase)(void);
42 int (*cpu_enable)(unsigned int nr);
43 int (*cpu_disable)(void);
44 void (*cpu_die)(unsigned int nr);
45 int (*cpu_bootable)(unsigned int nr);
46 };
47 #endif
48
49 struct machdep_calls {
50 char *name;
51 #ifdef CONFIG_PPC64
52 void (*hpte_invalidate)(unsigned long slot,
53 unsigned long va,
54 int psize, int ssize,
55 int local);
56 long (*hpte_updatepp)(unsigned long slot,
57 unsigned long newpp,
58 unsigned long va,
59 int psize, int ssize,
60 int local);
61 void (*hpte_updateboltedpp)(unsigned long newpp,
62 unsigned long ea,
63 int psize, int ssize);
64 long (*hpte_insert)(unsigned long hpte_group,
65 unsigned long va,
66 unsigned long prpn,
67 unsigned long rflags,
68 unsigned long vflags,
69 int psize, int ssize);
70 long (*hpte_remove)(unsigned long hpte_group);
71 void (*hpte_removebolted)(unsigned long ea,
72 int psize, int ssize);
73 void (*flush_hash_range)(unsigned long number, int local);
74
75 /* special for kexec, to be called in real mode, linar mapping is
76 * destroyed as well */
77 void (*hpte_clear_all)(void);
78
79 int (*tce_build)(struct iommu_table *tbl,
80 long index,
81 long npages,
82 unsigned long uaddr,
83 enum dma_data_direction direction,
84 struct dma_attrs *attrs);
85 void (*tce_free)(struct iommu_table *tbl,
86 long index,
87 long npages);
88 unsigned long (*tce_get)(struct iommu_table *tbl,
89 long index);
90 void (*tce_flush)(struct iommu_table *tbl);
91
92 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
93 unsigned long flags);
94 void (*iounmap)(volatile void __iomem *token);
95
96 #ifdef CONFIG_PM
97 void (*iommu_save)(void);
98 void (*iommu_restore)(void);
99 #endif
100 #endif /* CONFIG_PPC64 */
101
102 void (*pci_dma_dev_setup)(struct pci_dev *dev);
103 void (*pci_dma_bus_setup)(struct pci_bus *bus);
104
105 int (*probe)(void);
106 void (*setup_arch)(void); /* Optional, may be NULL */
107 void (*init_early)(void);
108 /* Optional, may be NULL. */
109 void (*show_cpuinfo)(struct seq_file *m);
110 void (*show_percpuinfo)(struct seq_file *m, int i);
111
112 void (*init_IRQ)(void);
113 unsigned int (*get_irq)(void);
114 #ifdef CONFIG_KEXEC
115 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
116 #endif
117
118 /* PCI stuff */
119 /* Called after scanning the bus, before allocating resources */
120 void (*pcibios_fixup)(void);
121 int (*pci_probe_mode)(struct pci_bus *);
122 void (*pci_irq_fixup)(struct pci_dev *dev);
123
124 /* To setup PHBs when using automatic OF platform driver for PCI */
125 int (*pci_setup_phb)(struct pci_controller *host);
126
127 #ifdef CONFIG_PCI_MSI
128 int (*msi_check_device)(struct pci_dev* dev,
129 int nvec, int type);
130 int (*setup_msi_irqs)(struct pci_dev *dev,
131 int nvec, int type);
132 void (*teardown_msi_irqs)(struct pci_dev *dev);
133 #endif
134
135 void (*restart)(char *cmd);
136 void (*power_off)(void);
137 void (*halt)(void);
138 void (*panic)(char *str);
139 void (*cpu_die)(void);
140
141 long (*time_init)(void); /* Optional, may be NULL */
142
143 int (*set_rtc_time)(struct rtc_time *);
144 void (*get_rtc_time)(struct rtc_time *);
145 unsigned long (*get_boot_time)(void);
146 unsigned char (*rtc_read_val)(int addr);
147 void (*rtc_write_val)(int addr, unsigned char val);
148
149 void (*calibrate_decr)(void);
150
151 void (*progress)(char *, unsigned short);
152
153 /* Interface for platform error logging */
154 void (*log_error)(char *buf, unsigned int err_type, int fatal);
155
156 unsigned char (*nvram_read_val)(int addr);
157 void (*nvram_write_val)(int addr, unsigned char val);
158 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
159 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
160 ssize_t (*nvram_size)(void);
161 void (*nvram_sync)(void);
162
163 /* Exception handlers */
164 int (*system_reset_exception)(struct pt_regs *regs);
165 int (*machine_check_exception)(struct pt_regs *regs);
166
167 /* Motherboard/chipset features. This is a kind of general purpose
168 * hook used to control some machine specific features (like reset
169 * lines, chip power control, etc...).
170 */
171 long (*feature_call)(unsigned int feature, ...);
172
173 /* Get legacy PCI/IDE interrupt mapping */
174 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
175
176 /* Get access protection for /dev/mem */
177 pgprot_t (*phys_mem_access_prot)(struct file *file,
178 unsigned long pfn,
179 unsigned long size,
180 pgprot_t vma_prot);
181
182 /* Idle loop for this platform, leave empty for default idle loop */
183 void (*idle_loop)(void);
184
185 /*
186 * Function for waiting for work with reduced power in idle loop;
187 * called with interrupts disabled.
188 */
189 void (*power_save)(void);
190
191 /* Function to enable performance monitor counters for this
192 platform, called once per cpu. */
193 void (*enable_pmcs)(void);
194
195 /* Set DABR for this platform, leave empty for default implemenation */
196 int (*set_dabr)(unsigned long dabr);
197
198 #ifdef CONFIG_PPC32 /* XXX for now */
199 /* A general init function, called by ppc_init in init/main.c.
200 May be NULL. */
201 void (*init)(void);
202
203 void (*kgdb_map_scc)(void);
204
205 /*
206 * optional PCI "hooks"
207 */
208 /* Called in indirect_* to avoid touching devices */
209 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
210
211 /* Called at then very end of pcibios_init() */
212 void (*pcibios_after_init)(void);
213
214 #endif /* CONFIG_PPC32 */
215
216 /* Called after PPC generic resource fixup to perform
217 machine specific fixups */
218 void (*pcibios_fixup_resources)(struct pci_dev *);
219
220 /* Called for each PCI bus in the system when it's probed */
221 void (*pcibios_fixup_bus)(struct pci_bus *);
222
223 /* Called when pci_enable_device() is called. Returns 0 to
224 * allow assignment/enabling of the device. */
225 int (*pcibios_enable_device_hook)(struct pci_dev *);
226
227 /* Called to shutdown machine specific hardware not already controlled
228 * by other drivers.
229 */
230 void (*machine_shutdown)(void);
231
232 #ifdef CONFIG_KEXEC
233 /* Called to do the minimal shutdown needed to run a kexec'd kernel
234 * to run successfully.
235 * XXX Should we move this one out of kexec scope?
236 */
237 void (*machine_crash_shutdown)(struct pt_regs *regs);
238
239 /* Called to do what every setup is needed on image and the
240 * reboot code buffer. Returns 0 on success.
241 * Provide your own (maybe dummy) implementation if your platform
242 * claims to support kexec.
243 */
244 int (*machine_kexec_prepare)(struct kimage *image);
245
246 /* Called to handle any machine specific cleanup on image */
247 void (*machine_kexec_cleanup)(struct kimage *image);
248
249 /* Called to perform the _real_ kexec.
250 * Do NOT allocate memory or fail here. We are past the point of
251 * no return.
252 */
253 void (*machine_kexec)(struct kimage *image);
254 #endif /* CONFIG_KEXEC */
255
256 #ifdef CONFIG_SUSPEND
257 /* These are called to disable and enable, respectively, IRQs when
258 * entering a suspend state. If NULL, then the generic versions
259 * will be called. The generic versions disable/enable the
260 * decrementer along with interrupts.
261 */
262 void (*suspend_disable_irqs)(void);
263 void (*suspend_enable_irqs)(void);
264 #endif
265 };
266
267 extern void e500_idle(void);
268 extern void power4_idle(void);
269 extern void power4_cpu_offline_powersave(void);
270 extern void ppc6xx_idle(void);
271
272 /*
273 * ppc_md contains a copy of the machine description structure for the
274 * current platform. machine_id contains the initial address where the
275 * description was found during boot.
276 */
277 extern struct machdep_calls ppc_md;
278 extern struct machdep_calls *machine_id;
279
280 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
281
282 #define define_machine(name) \
283 extern struct machdep_calls mach_##name; \
284 EXPORT_SYMBOL(mach_##name); \
285 struct machdep_calls mach_##name __machine_desc =
286
287 #define machine_is(name) \
288 ({ \
289 extern struct machdep_calls mach_##name \
290 __attribute__((weak)); \
291 machine_id == &mach_##name; \
292 })
293
294 extern void probe_machine(void);
295
296 extern char cmd_line[COMMAND_LINE_SIZE];
297
298 #ifdef CONFIG_PPC_PMAC
299 /*
300 * Power macintoshes have either a CUDA, PMU or SMU controlling
301 * system reset, power, NVRAM, RTC.
302 */
303 typedef enum sys_ctrler_kind {
304 SYS_CTRLER_UNKNOWN = 0,
305 SYS_CTRLER_CUDA = 1,
306 SYS_CTRLER_PMU = 2,
307 SYS_CTRLER_SMU = 3,
308 } sys_ctrler_t;
309 extern sys_ctrler_t sys_ctrler;
310
311 #endif /* CONFIG_PPC_PMAC */
312
313 extern void setup_pci_ptrs(void);
314
315 #ifdef CONFIG_SMP
316 /* Poor default implementations */
317 extern void __devinit smp_generic_give_timebase(void);
318 extern void __devinit smp_generic_take_timebase(void);
319 #endif /* CONFIG_SMP */
320
321
322 /* Functions to produce codes on the leds.
323 * The SRC code should be unique for the message category and should
324 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
325 * and (for boot & dump) should be sorted numerically in the order
326 * the events occur.
327 */
328 /* Print a boot progress message. */
329 void ppc64_boot_msg(unsigned int src, const char *msg);
330 /* Print a termination message (print only -- does not stop the kernel) */
331 void ppc64_terminate_msg(unsigned int src, const char *msg);
332
log_error(char * buf,unsigned int err_type,int fatal)333 static inline void log_error(char *buf, unsigned int err_type, int fatal)
334 {
335 if (ppc_md.log_error)
336 ppc_md.log_error(buf, err_type, fatal);
337 }
338
339 #define __define_machine_initcall(mach,level,fn,id) \
340 static int __init __machine_initcall_##mach##_##fn(void) { \
341 if (machine_is(mach)) return fn(); \
342 return 0; \
343 } \
344 __define_initcall(level,__machine_initcall_##mach##_##fn,id);
345
346 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1)
347 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s)
348 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2)
349 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
350 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3)
351 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s)
352 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4)
353 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s)
354 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5)
355 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s)
356 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs)
357 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6)
358 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s)
359 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7)
360 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s)
361
362 void generic_suspend_disable_irqs(void);
363 void generic_suspend_enable_irqs(void);
364
365 #endif /* __KERNEL__ */
366 #endif /* _ASM_POWERPC_MACHDEP_H */
367