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Paul Mackerrasb41fc4f2005-10-26 21:53:19 +10001#ifndef _ASM_POWERPC_MACHDEP_H
2#define _ASM_POWERPC_MACHDEP_H
Paul Mackerras143a1de2005-10-19 23:11:21 +10003#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
Paul Mackerras143a1de2005-10-19 23:11:21 +100012#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;
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +110029struct pci_controller;
Michael Ellerman3d1229d2005-11-14 23:35:00 +110030#ifdef CONFIG_KEXEC
31struct kimage;
32#endif
Paul Mackerras143a1de2005-10-19 23:11:21 +100033
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 {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110050 char *name;
Paul Mackerras143a1de2005-10-19 23:11:21 +100051#ifdef CONFIG_PPC64
52 void (*hpte_invalidate)(unsigned long slot,
53 unsigned long va,
Paul Mackerras1189be62007-10-11 20:37:10 +100054 int psize, int ssize,
Paul Mackerras143a1de2005-10-19 23:11:21 +100055 int local);
56 long (*hpte_updatepp)(unsigned long slot,
57 unsigned long newpp,
58 unsigned long va,
Paul Mackerras1189be62007-10-11 20:37:10 +100059 int psize, int ssize,
Paul Mackerras143a1de2005-10-19 23:11:21 +100060 int local);
61 void (*hpte_updateboltedpp)(unsigned long newpp,
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +110062 unsigned long ea,
Paul Mackerras1189be62007-10-11 20:37:10 +100063 int psize, int ssize);
Paul Mackerras143a1de2005-10-19 23:11:21 +100064 long (*hpte_insert)(unsigned long hpte_group,
65 unsigned long va,
66 unsigned long prpn,
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +110067 unsigned long rflags,
Paul Mackerras143a1de2005-10-19 23:11:21 +100068 unsigned long vflags,
Paul Mackerras1189be62007-10-11 20:37:10 +100069 int psize, int ssize);
Paul Mackerras143a1de2005-10-19 23:11:21 +100070 long (*hpte_remove)(unsigned long hpte_group);
71 void (*flush_hash_range)(unsigned long number, int local);
72
73 /* special for kexec, to be called in real mode, linar mapping is
74 * destroyed as well */
75 void (*hpte_clear_all)(void);
76
77 void (*tce_build)(struct iommu_table * tbl,
78 long index,
79 long npages,
80 unsigned long uaddr,
81 enum dma_data_direction direction);
82 void (*tce_free)(struct iommu_table *tbl,
83 long index,
84 long npages);
Haren Myneni5f508672006-06-22 23:35:10 -070085 unsigned long (*tce_get)(struct iommu_table *tbl,
86 long index);
Paul Mackerras143a1de2005-10-19 23:11:21 +100087 void (*tce_flush)(struct iommu_table *tbl);
Benjamin Herrenschmidt12d04ee2006-11-11 17:25:02 +110088 void (*pci_dma_dev_setup)(struct pci_dev *dev);
89 void (*pci_dma_bus_setup)(struct pci_bus *bus);
Benjamin Herrenschmidt4cb3cee2006-11-11 17:25:10 +110090
Benjamin Herrenschmidt68a64352006-11-13 09:27:39 +110091 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
Benjamin Herrenschmidt4cb3cee2006-11-11 17:25:10 +110092 unsigned long flags);
Benjamin Herrenschmidt68a64352006-11-13 09:27:39 +110093 void (*iounmap)(volatile void __iomem *token);
Johannes Berg7e115802007-05-03 22:28:32 +100094
95#ifdef CONFIG_PM
96 void (*iommu_save)(void);
97 void (*iommu_restore)(void);
98#endif
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110099#endif /* CONFIG_PPC64 */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000100
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100101 int (*probe)(void);
Grant Likely38db7e72007-10-11 04:48:18 +1000102 void (*setup_arch)(void); /* Optional, may be NULL */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000103 void (*init_early)(void);
104 /* Optional, may be NULL. */
Paul Mackerrasd8699e62005-10-20 17:02:01 +1000105 void (*show_cpuinfo)(struct seq_file *m);
106 void (*show_percpuinfo)(struct seq_file *m, int i);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000107
108 void (*init_IRQ)(void);
Olaf Hering35a84c22006-10-07 22:08:26 +1000109 unsigned int (*get_irq)(void);
Michael Ellermanc5e24352005-11-12 00:06:05 +1100110#ifdef CONFIG_KEXEC
111 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
112#endif
Paul Mackerras143a1de2005-10-19 23:11:21 +1000113
114 /* PCI stuff */
115 /* Called after scanning the bus, before allocating resources */
116 void (*pcibios_fixup)(void);
117 int (*pci_probe_mode)(struct pci_bus *);
Benjamin Herrenschmidtf90bb152006-11-11 17:24:51 +1100118 void (*pci_irq_fixup)(struct pci_dev *dev);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000119
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100120 /* To setup PHBs when using automatic OF platform driver for PCI */
121 int (*pci_setup_phb)(struct pci_controller *host);
122
Michael Ellermandf87ef52007-05-08 12:58:34 +1000123#ifdef CONFIG_PCI_MSI
124 int (*msi_check_device)(struct pci_dev* dev,
125 int nvec, int type);
126 int (*setup_msi_irqs)(struct pci_dev *dev,
127 int nvec, int type);
128 void (*teardown_msi_irqs)(struct pci_dev *dev);
129#endif
130
Paul Mackerras143a1de2005-10-19 23:11:21 +1000131 void (*restart)(char *cmd);
132 void (*power_off)(void);
133 void (*halt)(void);
134 void (*panic)(char *str);
135 void (*cpu_die)(void);
136
137 long (*time_init)(void); /* Optional, may be NULL */
138
139 int (*set_rtc_time)(struct rtc_time *);
140 void (*get_rtc_time)(struct rtc_time *);
141 unsigned long (*get_boot_time)(void);
142 unsigned char (*rtc_read_val)(int addr);
143 void (*rtc_write_val)(int addr, unsigned char val);
144
145 void (*calibrate_decr)(void);
146
147 void (*progress)(char *, unsigned short);
148
149 /* Interface for platform error logging */
150 void (*log_error)(char *buf, unsigned int err_type, int fatal);
151
Paul Mackerras35499c02005-10-22 16:02:39 +1000152 unsigned char (*nvram_read_val)(int addr);
153 void (*nvram_write_val)(int addr, unsigned char val);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000154 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
155 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
156 ssize_t (*nvram_size)(void);
157 void (*nvram_sync)(void);
158
159 /* Exception handlers */
Arnd Bergmannc902be72006-01-04 19:55:53 +0000160 int (*system_reset_exception)(struct pt_regs *regs);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000161 int (*machine_check_exception)(struct pt_regs *regs);
162
163 /* Motherboard/chipset features. This is a kind of general purpose
164 * hook used to control some machine specific features (like reset
165 * lines, chip power control, etc...).
166 */
167 long (*feature_call)(unsigned int feature, ...);
168
Paul Mackerras143a1de2005-10-19 23:11:21 +1000169 /* Get legacy PCI/IDE interrupt mapping */
170 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
171
172 /* Get access protection for /dev/mem */
173 pgprot_t (*phys_mem_access_prot)(struct file *file,
Roland Dreier8b150472005-10-28 17:46:18 -0700174 unsigned long pfn,
Paul Mackerras143a1de2005-10-19 23:11:21 +1000175 unsigned long size,
176 pgprot_t vma_prot);
177
178 /* Idle loop for this platform, leave empty for default idle loop */
179 void (*idle_loop)(void);
180
Paul Mackerrasa0652fc2006-03-27 15:03:03 +1100181 /*
182 * Function for waiting for work with reduced power in idle loop;
183 * called with interrupts disabled.
184 */
185 void (*power_save)(void);
186
Paul Mackerras143a1de2005-10-19 23:11:21 +1000187 /* Function to enable performance monitor counters for this
188 platform, called once per cpu. */
189 void (*enable_pmcs)(void);
190
Michael Ellerman76032de2005-11-07 13:12:03 +1100191 /* Set DABR for this platform, leave empty for default implemenation */
192 int (*set_dabr)(unsigned long dabr);
193
Paul Mackerras143a1de2005-10-19 23:11:21 +1000194#ifdef CONFIG_PPC32 /* XXX for now */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000195 /* A general init function, called by ppc_init in init/main.c.
196 May be NULL. */
197 void (*init)(void);
198
Paul Mackerras143a1de2005-10-19 23:11:21 +1000199 void (*setup_io_mappings)(void);
200
201 void (*early_serial_map)(void);
202 void (*kgdb_map_scc)(void);
203
Paul Mackerras143a1de2005-10-19 23:11:21 +1000204 /*
205 * optional PCI "hooks"
206 */
207
Paul Mackerras143a1de2005-10-19 23:11:21 +1000208 /* Called when pci_enable_device() is called (initial=0) or
209 * when a device with no assigned resource is found (initial=1).
210 * Returns 0 to allow assignment/enabling of the device. */
211 int (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
212
Paul Mackerras143a1de2005-10-19 23:11:21 +1000213 /* Called in indirect_* to avoid touching devices */
Kumar Gala7d52c7b2007-06-22 00:23:57 -0500214 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000215
216 /* Called at then very end of pcibios_init() */
217 void (*pcibios_after_init)(void);
218
Michael Ellerman3d1229d2005-11-14 23:35:00 +1100219#endif /* CONFIG_PPC32 */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000220
Benjamin Herrenschmidtbf5e2ba2007-12-20 14:54:51 +1100221 /* Called after PPC generic resource fixup to perform
222 machine specific fixups */
223 void (*pcibios_fixup_resources)(struct pci_dev *);
224
225 /* Called for each PCI bus in the system when it's probed */
226 void (*pcibios_fixup_bus)(struct pci_bus *);
227
Paul Mackerras143a1de2005-10-19 23:11:21 +1000228 /* Called to shutdown machine specific hardware not already controlled
229 * by other drivers.
Paul Mackerras143a1de2005-10-19 23:11:21 +1000230 */
231 void (*machine_shutdown)(void);
232
Michael Ellerman3d1229d2005-11-14 23:35:00 +1100233#ifdef CONFIG_KEXEC
Paul Mackerras143a1de2005-10-19 23:11:21 +1000234 /* Called to do the minimal shutdown needed to run a kexec'd kernel
235 * to run successfully.
236 * XXX Should we move this one out of kexec scope?
237 */
Michael Ellermancd0ca2c2005-12-04 18:39:12 +1100238 void (*machine_crash_shutdown)(struct pt_regs *regs);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000239
240 /* Called to do what every setup is needed on image and the
241 * reboot code buffer. Returns 0 on success.
242 * Provide your own (maybe dummy) implementation if your platform
243 * claims to support kexec.
244 */
245 int (*machine_kexec_prepare)(struct kimage *image);
246
247 /* Called to handle any machine specific cleanup on image */
248 void (*machine_kexec_cleanup)(struct kimage *image);
249
250 /* Called to perform the _real_ kexec.
251 * Do NOT allocate memory or fail here. We are past the point of
252 * no return.
253 */
254 void (*machine_kexec)(struct kimage *image);
255#endif /* CONFIG_KEXEC */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000256};
257
Paul Mackerrasa0652fc2006-03-27 15:03:03 +1100258extern void power4_idle(void);
Johannes Bergd9333af2007-05-03 06:33:51 +1000259extern void power4_cpu_offline_powersave(void);
Paul Mackerrasa0652fc2006-03-27 15:03:03 +1100260extern void ppc6xx_idle(void);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000261
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100262/*
263 * ppc_md contains a copy of the machine description structure for the
264 * current platform. machine_id contains the initial address where the
265 * description was found during boot.
266 */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000267extern struct machdep_calls ppc_md;
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100268extern struct machdep_calls *machine_id;
269
270#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
271
Paul Mackerrasd0e15be2006-04-23 10:42:04 +1000272#define define_machine(name) \
273 extern struct machdep_calls mach_##name; \
274 EXPORT_SYMBOL(mach_##name); \
275 struct machdep_calls mach_##name __machine_desc =
276
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100277#define machine_is(name) \
278 ({ \
279 extern struct machdep_calls mach_##name \
280 __attribute__((weak)); \
281 machine_id == &mach_##name; \
282 })
283
284extern void probe_machine(void);
285
Paul Mackerras143a1de2005-10-19 23:11:21 +1000286extern char cmd_line[COMMAND_LINE_SIZE];
287
288#ifdef CONFIG_PPC_PMAC
289/*
290 * Power macintoshes have either a CUDA, PMU or SMU controlling
291 * system reset, power, NVRAM, RTC.
292 */
293typedef enum sys_ctrler_kind {
294 SYS_CTRLER_UNKNOWN = 0,
295 SYS_CTRLER_CUDA = 1,
296 SYS_CTRLER_PMU = 2,
297 SYS_CTRLER_SMU = 3,
298} sys_ctrler_t;
299extern sys_ctrler_t sys_ctrler;
300
301#endif /* CONFIG_PPC_PMAC */
302
303extern void setup_pci_ptrs(void);
304
305#ifdef CONFIG_SMP
306/* Poor default implementations */
307extern void __devinit smp_generic_give_timebase(void);
308extern void __devinit smp_generic_take_timebase(void);
309#endif /* CONFIG_SMP */
310
311
312/* Functions to produce codes on the leds.
313 * The SRC code should be unique for the message category and should
314 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
315 * and (for boot & dump) should be sorted numerically in the order
316 * the events occur.
317 */
318/* Print a boot progress message. */
319void ppc64_boot_msg(unsigned int src, const char *msg);
320/* Print a termination message (print only -- does not stop the kernel) */
321void ppc64_terminate_msg(unsigned int src, const char *msg);
322
323static inline void log_error(char *buf, unsigned int err_type, int fatal)
324{
325 if (ppc_md.log_error)
326 ppc_md.log_error(buf, err_type, fatal);
327}
328
Grant Likely800d68c2007-12-02 17:10:28 +1100329#define __define_machine_initcall(mach,level,fn,id) \
330 static int __init __machine_initcall_##mach##_##fn(void) { \
331 if (machine_is(mach)) return fn(); \
332 return 0; \
333 } \
334 __define_initcall(level,__machine_initcall_##mach##_##fn,id);
335
336#define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1)
337#define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s)
338#define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2)
339#define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
340#define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3)
341#define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s)
342#define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4)
343#define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s)
344#define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5)
345#define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s)
346#define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs)
347#define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6)
348#define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s)
349#define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7)
350#define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s)
351
Paul Mackerras143a1de2005-10-19 23:11:21 +1000352#endif /* __KERNEL__ */
Paul Mackerrasb41fc4f2005-10-26 21:53:19 +1000353#endif /* _ASM_POWERPC_MACHDEP_H */