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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
23struct pt_regs;
24struct pci_bus;
25struct device_node;
26struct iommu_table;
27struct rtc_time;
28struct file;
29struct pci_controller;
30#ifdef CONFIG_KEXEC
31struct kimage;
32#endif
33
34#ifdef CONFIG_SMP
35struct 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
49struct 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 void (*pci_dma_dev_setup)(struct pci_dev *dev);
92 void (*pci_dma_bus_setup)(struct pci_bus *bus);
93
94 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
95 unsigned long flags);
96 void (*iounmap)(volatile void __iomem *token);
97
98#ifdef CONFIG_PM
99 void (*iommu_save)(void);
100 void (*iommu_restore)(void);
101#endif
102#endif /* CONFIG_PPC64 */
103
104 int (*probe)(void);
105 void (*setup_arch)(void); /* Optional, may be NULL */
106 void (*init_early)(void);
107 /* Optional, may be NULL. */
108 void (*show_cpuinfo)(struct seq_file *m);
109 void (*show_percpuinfo)(struct seq_file *m, int i);
110
111 void (*init_IRQ)(void);
112 unsigned int (*get_irq)(void);
113#ifdef CONFIG_KEXEC
114 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
115#endif
116
117 /* PCI stuff */
118 /* Called after scanning the bus, before allocating resources */
119 void (*pcibios_fixup)(void);
120 int (*pci_probe_mode)(struct pci_bus *);
121 void (*pci_irq_fixup)(struct pci_dev *dev);
122
123 /* To setup PHBs when using automatic OF platform driver for PCI */
124 int (*pci_setup_phb)(struct pci_controller *host);
125
126#ifdef CONFIG_PCI_MSI
127 int (*msi_check_device)(struct pci_dev* dev,
128 int nvec, int type);
129 int (*setup_msi_irqs)(struct pci_dev *dev,
130 int nvec, int type);
131 void (*teardown_msi_irqs)(struct pci_dev *dev);
132#endif
133
134 void (*restart)(char *cmd);
135 void (*power_off)(void);
136 void (*halt)(void);
137 void (*panic)(char *str);
138 void (*cpu_die)(void);
139
140 long (*time_init)(void); /* Optional, may be NULL */
141
142 int (*set_rtc_time)(struct rtc_time *);
143 void (*get_rtc_time)(struct rtc_time *);
144 unsigned long (*get_boot_time)(void);
145 unsigned char (*rtc_read_val)(int addr);
146 void (*rtc_write_val)(int addr, unsigned char val);
147
148 void (*calibrate_decr)(void);
149
150 void (*progress)(char *, unsigned short);
151
152 /* Interface for platform error logging */
153 void (*log_error)(char *buf, unsigned int err_type, int fatal);
154
155 unsigned char (*nvram_read_val)(int addr);
156 void (*nvram_write_val)(int addr, unsigned char val);
157 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
158 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
159 ssize_t (*nvram_size)(void);
160 void (*nvram_sync)(void);
161
162 /* Exception handlers */
163 int (*system_reset_exception)(struct pt_regs *regs);
164 int (*machine_check_exception)(struct pt_regs *regs);
165
166 /* Motherboard/chipset features. This is a kind of general purpose
167 * hook used to control some machine specific features (like reset
168 * lines, chip power control, etc...).
169 */
170 long (*feature_call)(unsigned int feature, ...);
171
172 /* Get legacy PCI/IDE interrupt mapping */
173 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
174
175 /* Get access protection for /dev/mem */
176 pgprot_t (*phys_mem_access_prot)(struct file *file,
177 unsigned long pfn,
178 unsigned long size,
179 pgprot_t vma_prot);
180
181 /* Idle loop for this platform, leave empty for default idle loop */
182 void (*idle_loop)(void);
183
184 /*
185 * Function for waiting for work with reduced power in idle loop;
186 * called with interrupts disabled.
187 */
188 void (*power_save)(void);
189
190 /* Function to enable performance monitor counters for this
191 platform, called once per cpu. */
192 void (*enable_pmcs)(void);
193
194 /* Set DABR for this platform, leave empty for default implemenation */
195 int (*set_dabr)(unsigned long dabr);
196
197#ifdef CONFIG_PPC32 /* XXX for now */
198 /* A general init function, called by ppc_init in init/main.c.
199 May be NULL. */
200 void (*init)(void);
201
202 void (*kgdb_map_scc)(void);
203
204 /*
205 * optional PCI "hooks"
206 */
207 /* Called in indirect_* to avoid touching devices */
208 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
209
210 /* Called at then very end of pcibios_init() */
211 void (*pcibios_after_init)(void);
212
213#endif /* CONFIG_PPC32 */
214
215 /* Called after PPC generic resource fixup to perform
216 machine specific fixups */
217 void (*pcibios_fixup_resources)(struct pci_dev *);
218
219 /* Called for each PCI bus in the system when it's probed */
220 void (*pcibios_fixup_bus)(struct pci_bus *);
221
222 /* Called when pci_enable_device() is called. Returns 0 to
223 * allow assignment/enabling of the device. */
224 int (*pcibios_enable_device_hook)(struct pci_dev *);
225
226 /* Called to shutdown machine specific hardware not already controlled
227 * by other drivers.
228 */
229 void (*machine_shutdown)(void);
230
231#ifdef CONFIG_KEXEC
232 /* Called to do the minimal shutdown needed to run a kexec'd kernel
233 * to run successfully.
234 * XXX Should we move this one out of kexec scope?
235 */
236 void (*machine_crash_shutdown)(struct pt_regs *regs);
237
238 /* Called to do what every setup is needed on image and the
239 * reboot code buffer. Returns 0 on success.
240 * Provide your own (maybe dummy) implementation if your platform
241 * claims to support kexec.
242 */
243 int (*machine_kexec_prepare)(struct kimage *image);
244
245 /* Called to handle any machine specific cleanup on image */
246 void (*machine_kexec_cleanup)(struct kimage *image);
247
248 /* Called to perform the _real_ kexec.
249 * Do NOT allocate memory or fail here. We are past the point of
250 * no return.
251 */
252 void (*machine_kexec)(struct kimage *image);
253#endif /* CONFIG_KEXEC */
254
255#ifdef CONFIG_SUSPEND
256 /* These are called to disable and enable, respectively, IRQs when
257 * entering a suspend state. If NULL, then the generic versions
258 * will be called. The generic versions disable/enable the
259 * decrementer along with interrupts.
260 */
261 void (*suspend_disable_irqs)(void);
262 void (*suspend_enable_irqs)(void);
263#endif
264};
265
266extern void e500_idle(void);
267extern void power4_idle(void);
268extern void power4_cpu_offline_powersave(void);
269extern void ppc6xx_idle(void);
270
271/*
272 * ppc_md contains a copy of the machine description structure for the
273 * current platform. machine_id contains the initial address where the
274 * description was found during boot.
275 */
276extern struct machdep_calls ppc_md;
277extern struct machdep_calls *machine_id;
278
279#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
280
281#define define_machine(name) \
282 extern struct machdep_calls mach_##name; \
283 EXPORT_SYMBOL(mach_##name); \
284 struct machdep_calls mach_##name __machine_desc =
285
286#define machine_is(name) \
287 ({ \
288 extern struct machdep_calls mach_##name \
289 __attribute__((weak)); \
290 machine_id == &mach_##name; \
291 })
292
293extern void probe_machine(void);
294
295extern char cmd_line[COMMAND_LINE_SIZE];
296
297#ifdef CONFIG_PPC_PMAC
298/*
299 * Power macintoshes have either a CUDA, PMU or SMU controlling
300 * system reset, power, NVRAM, RTC.
301 */
302typedef enum sys_ctrler_kind {
303 SYS_CTRLER_UNKNOWN = 0,
304 SYS_CTRLER_CUDA = 1,
305 SYS_CTRLER_PMU = 2,
306 SYS_CTRLER_SMU = 3,
307} sys_ctrler_t;
308extern sys_ctrler_t sys_ctrler;
309
310#endif /* CONFIG_PPC_PMAC */
311
312extern void setup_pci_ptrs(void);
313
314#ifdef CONFIG_SMP
315/* Poor default implementations */
316extern void __devinit smp_generic_give_timebase(void);
317extern 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. */
328void ppc64_boot_msg(unsigned int src, const char *msg);
329/* Print a termination message (print only -- does not stop the kernel) */
330void ppc64_terminate_msg(unsigned int src, const char *msg);
331
332static inline void log_error(char *buf, unsigned int err_type, int fatal)
333{
334 if (ppc_md.log_error)
335 ppc_md.log_error(buf, err_type, fatal);
336}
337
338#define __define_machine_initcall(mach,level,fn,id) \
339 static int __init __machine_initcall_##mach##_##fn(void) { \
340 if (machine_is(mach)) return fn(); \
341 return 0; \
342 } \
343 __define_initcall(level,__machine_initcall_##mach##_##fn,id);
344
345#define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1)
346#define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s)
347#define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2)
348#define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
349#define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3)
350#define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s)
351#define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4)
352#define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s)
353#define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5)
354#define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s)
355#define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs)
356#define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6)
357#define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s)
358#define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7)
359#define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s)
360
361void generic_suspend_disable_irqs(void);
362void generic_suspend_enable_irqs(void);
363
364#endif /* __KERNEL__ */
365#endif /* _ASM_POWERPC_MACHDEP_H */