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 #include <linux/export.h>
16
17 #include <asm/setup.h>
18
19 /* We export this macro for external modules like Alsa to know if
20 * ppc_md.feature_call is implemented or not
21 */
22 #define CONFIG_PPC_HAS_FEATURE_CALLS
23
24 struct pt_regs;
25 struct pci_bus;
26 struct device_node;
27 struct iommu_table;
28 struct rtc_time;
29 struct file;
30 struct pci_controller;
31 struct kimage;
32
33 struct machdep_calls {
34 char *name;
35 #ifdef CONFIG_PPC64
36 void (*hpte_invalidate)(unsigned long slot,
37 unsigned long va,
38 int psize, int ssize,
39 int local);
40 long (*hpte_updatepp)(unsigned long slot,
41 unsigned long newpp,
42 unsigned long va,
43 int psize, int ssize,
44 int local);
45 void (*hpte_updateboltedpp)(unsigned long newpp,
46 unsigned long ea,
47 int psize, int ssize);
48 long (*hpte_insert)(unsigned long hpte_group,
49 unsigned long va,
50 unsigned long prpn,
51 unsigned long rflags,
52 unsigned long vflags,
53 int psize, int ssize);
54 long (*hpte_remove)(unsigned long hpte_group);
55 void (*hpte_removebolted)(unsigned long ea,
56 int psize, int ssize);
57 void (*flush_hash_range)(unsigned long number, int local);
58
59 /* special for kexec, to be called in real mode, linear mapping is
60 * destroyed as well */
61 void (*hpte_clear_all)(void);
62
63 int (*tce_build)(struct iommu_table *tbl,
64 long index,
65 long npages,
66 unsigned long uaddr,
67 enum dma_data_direction direction,
68 struct dma_attrs *attrs);
69 void (*tce_free)(struct iommu_table *tbl,
70 long index,
71 long npages);
72 unsigned long (*tce_get)(struct iommu_table *tbl,
73 long index);
74 void (*tce_flush)(struct iommu_table *tbl);
75
76 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
77 unsigned long flags, void *caller);
78 void (*iounmap)(volatile void __iomem *token);
79
80 #ifdef CONFIG_PM
81 void (*iommu_save)(void);
82 void (*iommu_restore)(void);
83 #endif
84 #endif /* CONFIG_PPC64 */
85
86 void (*pci_dma_dev_setup)(struct pci_dev *dev);
87 void (*pci_dma_bus_setup)(struct pci_bus *bus);
88
89 /* Platform set_dma_mask and dma_get_required_mask overrides */
90 int (*dma_set_mask)(struct device *dev, u64 dma_mask);
91 u64 (*dma_get_required_mask)(struct device *dev);
92
93 int (*probe)(void);
94 void (*setup_arch)(void); /* Optional, may be NULL */
95 void (*init_early)(void);
96 /* Optional, may be NULL. */
97 void (*show_cpuinfo)(struct seq_file *m);
98 void (*show_percpuinfo)(struct seq_file *m, int i);
99
100 void (*init_IRQ)(void);
101
102 /* Return an irq, or NO_IRQ to indicate there are none pending. */
103 unsigned int (*get_irq)(void);
104
105 /* PCI stuff */
106 /* Called after scanning the bus, before allocating resources */
107 void (*pcibios_fixup)(void);
108 int (*pci_probe_mode)(struct pci_bus *);
109 void (*pci_irq_fixup)(struct pci_dev *dev);
110
111 /* To setup PHBs when using automatic OF platform driver for PCI */
112 int (*pci_setup_phb)(struct pci_controller *host);
113
114 #ifdef CONFIG_PCI_MSI
115 int (*msi_check_device)(struct pci_dev* dev,
116 int nvec, int type);
117 int (*setup_msi_irqs)(struct pci_dev *dev,
118 int nvec, int type);
119 void (*teardown_msi_irqs)(struct pci_dev *dev);
120 #endif
121
122 void (*restart)(char *cmd);
123 void (*power_off)(void);
124 void (*halt)(void);
125 void (*panic)(char *str);
126 void (*cpu_die)(void);
127
128 long (*time_init)(void); /* Optional, may be NULL */
129
130 int (*set_rtc_time)(struct rtc_time *);
131 void (*get_rtc_time)(struct rtc_time *);
132 unsigned long (*get_boot_time)(void);
133 unsigned char (*rtc_read_val)(int addr);
134 void (*rtc_write_val)(int addr, unsigned char val);
135
136 void (*calibrate_decr)(void);
137
138 void (*progress)(char *, unsigned short);
139
140 /* Interface for platform error logging */
141 void (*log_error)(char *buf, unsigned int err_type, int fatal);
142
143 unsigned char (*nvram_read_val)(int addr);
144 void (*nvram_write_val)(int addr, unsigned char val);
145 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
146 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
147 ssize_t (*nvram_size)(void);
148 void (*nvram_sync)(void);
149
150 /* Exception handlers */
151 int (*system_reset_exception)(struct pt_regs *regs);
152 int (*machine_check_exception)(struct pt_regs *regs);
153
154 /* Motherboard/chipset features. This is a kind of general purpose
155 * hook used to control some machine specific features (like reset
156 * lines, chip power control, etc...).
157 */
158 long (*feature_call)(unsigned int feature, ...);
159
160 /* Get legacy PCI/IDE interrupt mapping */
161 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
162
163 /* Get access protection for /dev/mem */
164 pgprot_t (*phys_mem_access_prot)(struct file *file,
165 unsigned long pfn,
166 unsigned long size,
167 pgprot_t vma_prot);
168
169 /* Idle loop for this platform, leave empty for default idle loop */
170 void (*idle_loop)(void);
171
172 /*
173 * Function for waiting for work with reduced power in idle loop;
174 * called with interrupts disabled.
175 */
176 void (*power_save)(void);
177
178 /* Function to enable performance monitor counters for this
179 platform, called once per cpu. */
180 void (*enable_pmcs)(void);
181
182 /* Set DABR for this platform, leave empty for default implemenation */
183 int (*set_dabr)(unsigned long dabr);
184
185 #ifdef CONFIG_PPC32 /* XXX for now */
186 /* A general init function, called by ppc_init in init/main.c.
187 May be NULL. */
188 void (*init)(void);
189
190 void (*kgdb_map_scc)(void);
191
192 /*
193 * optional PCI "hooks"
194 */
195 /* Called at then very end of pcibios_init() */
196 void (*pcibios_after_init)(void);
197
198 #endif /* CONFIG_PPC32 */
199
200 /* Called in indirect_* to avoid touching devices */
201 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
202
203 /* Called after PPC generic resource fixup to perform
204 machine specific fixups */
205 void (*pcibios_fixup_resources)(struct pci_dev *);
206
207 /* Called for each PCI bus in the system when it's probed */
208 void (*pcibios_fixup_bus)(struct pci_bus *);
209
210 /* Called when pci_enable_device() is called. Returns 0 to
211 * allow assignment/enabling of the device. */
212 int (*pcibios_enable_device_hook)(struct pci_dev *);
213
214 /* Called after scan and before resource survey */
215 void (*pcibios_fixup_phb)(struct pci_controller *hose);
216
217 /* Called to shutdown machine specific hardware not already controlled
218 * by other drivers.
219 */
220 void (*machine_shutdown)(void);
221
222 #ifdef CONFIG_KEXEC
223 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
224
225 /* Called to do what every setup is needed on image and the
226 * reboot code buffer. Returns 0 on success.
227 * Provide your own (maybe dummy) implementation if your platform
228 * claims to support kexec.
229 */
230 int (*machine_kexec_prepare)(struct kimage *image);
231
232 /* Called to perform the _real_ kexec.
233 * Do NOT allocate memory or fail here. We are past the point of
234 * no return.
235 */
236 void (*machine_kexec)(struct kimage *image);
237 #endif /* CONFIG_KEXEC */
238
239 #ifdef CONFIG_SUSPEND
240 /* These are called to disable and enable, respectively, IRQs when
241 * entering a suspend state. If NULL, then the generic versions
242 * will be called. The generic versions disable/enable the
243 * decrementer along with interrupts.
244 */
245 void (*suspend_disable_irqs)(void);
246 void (*suspend_enable_irqs)(void);
247 #endif
248 int (*suspend_disable_cpu)(void);
249
250 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
251 ssize_t (*cpu_probe)(const char *, size_t);
252 ssize_t (*cpu_release)(const char *, size_t);
253 #endif
254 };
255
256 extern void e500_idle(void);
257 extern void power4_idle(void);
258 extern void power7_idle(void);
259 extern void ppc6xx_idle(void);
260 extern void book3e_idle(void);
261
262 /*
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 */
267 extern struct machdep_calls ppc_md;
268 extern struct machdep_calls *machine_id;
269
270 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
271
272 #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
277 #define machine_is(name) \
278 ({ \
279 extern struct machdep_calls mach_##name \
280 __attribute__((weak)); \
281 machine_id == &mach_##name; \
282 })
283
284 extern void probe_machine(void);
285
286 extern 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 */
293 typedef 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;
299 extern sys_ctrler_t sys_ctrler;
300
301 #endif /* CONFIG_PPC_PMAC */
302
303
304 /* Functions to produce codes on the leds.
305 * The SRC code should be unique for the message category and should
306 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
307 * and (for boot & dump) should be sorted numerically in the order
308 * the events occur.
309 */
310 /* Print a boot progress message. */
311 void ppc64_boot_msg(unsigned int src, const char *msg);
312
log_error(char * buf,unsigned int err_type,int fatal)313 static inline void log_error(char *buf, unsigned int err_type, int fatal)
314 {
315 if (ppc_md.log_error)
316 ppc_md.log_error(buf, err_type, fatal);
317 }
318
319 #define __define_machine_initcall(mach,level,fn,id) \
320 static int __init __machine_initcall_##mach##_##fn(void) { \
321 if (machine_is(mach)) return fn(); \
322 return 0; \
323 } \
324 __define_initcall(level,__machine_initcall_##mach##_##fn,id);
325
326 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1)
327 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s)
328 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2)
329 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
330 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3)
331 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s)
332 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4)
333 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s)
334 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5)
335 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s)
336 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs)
337 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6)
338 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s)
339 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7)
340 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s)
341
342 #endif /* __KERNEL__ */
343 #endif /* _ASM_POWERPC_MACHDEP_H */
344