[MIPS] R2 bitops compile fix for gcc < 4.0.
[linux-2.6-block.git] / include / asm-powerpc / machdep.h
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1#ifndef _ASM_POWERPC_MACHDEP_H
2#define _ASM_POWERPC_MACHDEP_H
143a1dec 3#ifdef __KERNEL__
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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
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12#include <linux/seq_file.h>
13#include <linux/init.h>
14#include <linux/dma-mapping.h>
15
16#include <asm/setup.h>
17
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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
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23struct pt_regs;
24struct pci_bus;
25struct device_node;
26struct iommu_table;
27struct rtc_time;
28struct file;
4c9d2800 29struct pci_controller;
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30#ifdef CONFIG_KEXEC
31struct kimage;
32#endif
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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 {
e8222502 50 char *name;
143a1dec 51#ifdef CONFIG_PPC64
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52 void (*hpte_invalidate)(unsigned long slot,
53 unsigned long va,
3c726f8d 54 int psize,
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55 int local);
56 long (*hpte_updatepp)(unsigned long slot,
57 unsigned long newpp,
58 unsigned long va,
3c726f8d 59 int pize,
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60 int local);
61 void (*hpte_updateboltedpp)(unsigned long newpp,
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62 unsigned long ea,
63 int psize);
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64 long (*hpte_insert)(unsigned long hpte_group,
65 unsigned long va,
66 unsigned long prpn,
3c726f8d 67 unsigned long rflags,
96e28449 68 unsigned long vflags,
3c726f8d 69 int psize);
1da177e4 70 long (*hpte_remove)(unsigned long hpte_group);
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71 void (*flush_hash_range)(unsigned long number, int local);
72
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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);
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85 unsigned long (*tce_get)(struct iommu_table *tbl,
86 long index);
1da177e4 87 void (*tce_flush)(struct iommu_table *tbl);
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88 void (*pci_dma_dev_setup)(struct pci_dev *dev);
89 void (*pci_dma_bus_setup)(struct pci_bus *bus);
4cb3cee0 90
68a64357 91 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
4cb3cee0 92 unsigned long flags);
68a64357 93 void (*iounmap)(volatile void __iomem *token);
e8222502 94#endif /* CONFIG_PPC64 */
1da177e4 95
e8222502 96 int (*probe)(void);
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97 void (*setup_arch)(void);
98 void (*init_early)(void);
99 /* Optional, may be NULL. */
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100 void (*show_cpuinfo)(struct seq_file *m);
101 void (*show_percpuinfo)(struct seq_file *m, int i);
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102
103 void (*init_IRQ)(void);
35a84c2f 104 unsigned int (*get_irq)(void);
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105#ifdef CONFIG_KEXEC
106 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
107#endif
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108
109 /* PCI stuff */
143a1dec 110 /* Called after scanning the bus, before allocating resources */
1da177e4 111 void (*pcibios_fixup)(void);
4267292b 112 int (*pci_probe_mode)(struct pci_bus *);
f90bb153 113 void (*pci_irq_fixup)(struct pci_dev *dev);
1da177e4 114
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115 /* To setup PHBs when using automatic OF platform driver for PCI */
116 int (*pci_setup_phb)(struct pci_controller *host);
117
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118 void (*restart)(char *cmd);
119 void (*power_off)(void);
120 void (*halt)(void);
121 void (*panic)(char *str);
122 void (*cpu_die)(void);
123
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124 long (*time_init)(void); /* Optional, may be NULL */
125
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126 int (*set_rtc_time)(struct rtc_time *);
127 void (*get_rtc_time)(struct rtc_time *);
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128 unsigned long (*get_boot_time)(void);
129 unsigned char (*rtc_read_val)(int addr);
130 void (*rtc_write_val)(int addr, unsigned char val);
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131
132 void (*calibrate_decr)(void);
133
134 void (*progress)(char *, unsigned short);
135
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136 /* Interface for platform error logging */
137 void (*log_error)(char *buf, unsigned int err_type, int fatal);
138
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139 unsigned char (*nvram_read_val)(int addr);
140 void (*nvram_write_val)(int addr, unsigned char val);
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141 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
142 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
143 ssize_t (*nvram_size)(void);
143a1dec 144 void (*nvram_sync)(void);
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145
146 /* Exception handlers */
c902be71 147 int (*system_reset_exception)(struct pt_regs *regs);
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148 int (*machine_check_exception)(struct pt_regs *regs);
149
150 /* Motherboard/chipset features. This is a kind of general purpose
151 * hook used to control some machine specific features (like reset
152 * lines, chip power control, etc...).
153 */
154 long (*feature_call)(unsigned int feature, ...);
155
156 /* Check availability of legacy devices like i8042 */
157 int (*check_legacy_ioport)(unsigned int baseport);
158
159 /* Get legacy PCI/IDE interrupt mapping */
160 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
161
162 /* Get access protection for /dev/mem */
163 pgprot_t (*phys_mem_access_prot)(struct file *file,
8b150478 164 unsigned long pfn,
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165 unsigned long size,
166 pgprot_t vma_prot);
167
fd899c0c 168 /* Idle loop for this platform, leave empty for default idle loop */
143a1dec 169 void (*idle_loop)(void);
180a3362 170
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171 /*
172 * Function for waiting for work with reduced power in idle loop;
173 * called with interrupts disabled.
174 */
175 void (*power_save)(void);
176
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177 /* Function to enable performance monitor counters for this
178 platform, called once per cpu. */
180a3362 179 void (*enable_pmcs)(void);
143a1dec 180
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181 /* Set DABR for this platform, leave empty for default implemenation */
182 int (*set_dabr)(unsigned long dabr);
183
143a1dec 184#ifdef CONFIG_PPC32 /* XXX for now */
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185 /* A general init function, called by ppc_init in init/main.c.
186 May be NULL. */
187 void (*init)(void);
188
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189 void (*setup_io_mappings)(void);
190
191 void (*early_serial_map)(void);
192 void (*kgdb_map_scc)(void);
193
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194 /*
195 * optional PCI "hooks"
196 */
197
198 /* Called after PPC generic resource fixup to perform
199 machine specific fixups */
200 void (*pcibios_fixup_resources)(struct pci_dev *);
201
202 /* Called for each PCI bus in the system when it's probed */
203 void (*pcibios_fixup_bus)(struct pci_bus *);
204
205 /* Called when pci_enable_device() is called (initial=0) or
206 * when a device with no assigned resource is found (initial=1).
207 * Returns 0 to allow assignment/enabling of the device. */
208 int (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
209
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210 /* Called in indirect_* to avoid touching devices */
211 int (*pci_exclude_device)(unsigned char, unsigned char);
212
213 /* Called at then very end of pcibios_init() */
214 void (*pcibios_after_init)(void);
215
3d1229d6 216#endif /* CONFIG_PPC32 */
143a1dec 217
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218 /* Called to shutdown machine specific hardware not already controlled
219 * by other drivers.
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220 */
221 void (*machine_shutdown)(void);
222
3d1229d6 223#ifdef CONFIG_KEXEC
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224 /* Called to do the minimal shutdown needed to run a kexec'd kernel
225 * to run successfully.
226 * XXX Should we move this one out of kexec scope?
227 */
cd0ca2ce 228 void (*machine_crash_shutdown)(struct pt_regs *regs);
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229
230 /* Called to do what every setup is needed on image and the
231 * reboot code buffer. Returns 0 on success.
232 * Provide your own (maybe dummy) implementation if your platform
233 * claims to support kexec.
234 */
235 int (*machine_kexec_prepare)(struct kimage *image);
236
237 /* Called to handle any machine specific cleanup on image */
238 void (*machine_kexec_cleanup)(struct kimage *image);
239
240 /* Called to perform the _real_ kexec.
241 * Do NOT allocate memory or fail here. We are past the point of
242 * no return.
243 */
244 void (*machine_kexec)(struct kimage *image);
245#endif /* CONFIG_KEXEC */
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246
247#ifdef CONFIG_PCI_MSI
248 int (*enable_msi)(struct pci_dev *pdev);
249 void (*disable_msi)(struct pci_dev *pdev);
250#endif /* CONFIG_PCI_MSI */
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251};
252
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253extern void power4_idle(void);
254extern void ppc6xx_idle(void);
fd899c0c 255
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256/*
257 * ppc_md contains a copy of the machine description structure for the
258 * current platform. machine_id contains the initial address where the
259 * description was found during boot.
260 */
1da177e4 261extern struct machdep_calls ppc_md;
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262extern struct machdep_calls *machine_id;
263
264#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
265
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266#define define_machine(name) \
267 extern struct machdep_calls mach_##name; \
268 EXPORT_SYMBOL(mach_##name); \
269 struct machdep_calls mach_##name __machine_desc =
270
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271#define machine_is(name) \
272 ({ \
273 extern struct machdep_calls mach_##name \
274 __attribute__((weak)); \
275 machine_id == &mach_##name; \
276 })
277
278extern void probe_machine(void);
279
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280extern char cmd_line[COMMAND_LINE_SIZE];
281
282#ifdef CONFIG_PPC_PMAC
283/*
284 * Power macintoshes have either a CUDA, PMU or SMU controlling
285 * system reset, power, NVRAM, RTC.
286 */
287typedef enum sys_ctrler_kind {
288 SYS_CTRLER_UNKNOWN = 0,
289 SYS_CTRLER_CUDA = 1,
290 SYS_CTRLER_PMU = 2,
291 SYS_CTRLER_SMU = 3,
292} sys_ctrler_t;
293extern sys_ctrler_t sys_ctrler;
294
295#endif /* CONFIG_PPC_PMAC */
296
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297extern void setup_pci_ptrs(void);
298
299#ifdef CONFIG_SMP
300/* Poor default implementations */
301extern void __devinit smp_generic_give_timebase(void);
302extern void __devinit smp_generic_take_timebase(void);
303#endif /* CONFIG_SMP */
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304
305
306/* Functions to produce codes on the leds.
307 * The SRC code should be unique for the message category and should
308 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
309 * and (for boot & dump) should be sorted numerically in the order
310 * the events occur.
311 */
312/* Print a boot progress message. */
313void ppc64_boot_msg(unsigned int src, const char *msg);
314/* Print a termination message (print only -- does not stop the kernel) */
315void ppc64_terminate_msg(unsigned int src, const char *msg);
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316
317static inline void log_error(char *buf, unsigned int err_type, int fatal)
318{
319 if (ppc_md.log_error)
320 ppc_md.log_error(buf, err_type, fatal);
321}
322
1da177e4 323#endif /* __KERNEL__ */
b41fc4f8 324#endif /* _ASM_POWERPC_MACHDEP_H */