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 struct pci_host_bridge;
33
34 struct machdep_calls {
35 char *name;
36 #ifdef CONFIG_PPC64
37 void (*hpte_invalidate)(unsigned long slot,
38 unsigned long vpn,
39 int psize, int ssize,
40 int local);
41 long (*hpte_updatepp)(unsigned long slot,
42 unsigned long newpp,
43 unsigned long vpn,
44 int psize, int ssize,
45 int local);
46 void (*hpte_updateboltedpp)(unsigned long newpp,
47 unsigned long ea,
48 int psize, int ssize);
49 long (*hpte_insert)(unsigned long hpte_group,
50 unsigned long vpn,
51 unsigned long prpn,
52 unsigned long rflags,
53 unsigned long vflags,
54 int psize, int apsize,
55 int ssize);
56 long (*hpte_remove)(unsigned long hpte_group);
57 void (*hpte_removebolted)(unsigned long ea,
58 int psize, int ssize);
59 void (*flush_hash_range)(unsigned long number, int local);
60
61 /* special for kexec, to be called in real mode, linear mapping is
62 * destroyed as well */
63 void (*hpte_clear_all)(void);
64
65 int (*tce_build)(struct iommu_table *tbl,
66 long index,
67 long npages,
68 unsigned long uaddr,
69 enum dma_data_direction direction,
70 struct dma_attrs *attrs);
71 void (*tce_free)(struct iommu_table *tbl,
72 long index,
73 long npages);
74 unsigned long (*tce_get)(struct iommu_table *tbl,
75 long index);
76 void (*tce_flush)(struct iommu_table *tbl);
77
78 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
79 unsigned long flags, void *caller);
80 void (*iounmap)(volatile void __iomem *token);
81
82 #ifdef CONFIG_PM
83 void (*iommu_save)(void);
84 void (*iommu_restore)(void);
85 #endif
86 #endif /* CONFIG_PPC64 */
87
88 void (*pci_dma_dev_setup)(struct pci_dev *dev);
89 void (*pci_dma_bus_setup)(struct pci_bus *bus);
90
91 /* Platform set_dma_mask and dma_get_required_mask overrides */
92 int (*dma_set_mask)(struct device *dev, u64 dma_mask);
93 u64 (*dma_get_required_mask)(struct device *dev);
94
95 int (*probe)(void);
96 void (*setup_arch)(void); /* Optional, may be NULL */
97 void (*init_early)(void);
98 /* Optional, may be NULL. */
99 void (*show_cpuinfo)(struct seq_file *m);
100 void (*show_percpuinfo)(struct seq_file *m, int i);
101
102 void (*init_IRQ)(void);
103
104 /* Return an irq, or NO_IRQ to indicate there are none pending. */
105 unsigned int (*get_irq)(void);
106
107 /* PCI stuff */
108 /* Called after scanning the bus, before allocating resources */
109 void (*pcibios_fixup)(void);
110 int (*pci_probe_mode)(struct pci_bus *);
111 void (*pci_irq_fixup)(struct pci_dev *dev);
112 int (*pcibios_root_bridge_prepare)(struct pci_host_bridge
113 *bridge);
114
115 /* To setup PHBs when using automatic OF platform driver for PCI */
116 int (*pci_setup_phb)(struct pci_controller *host);
117
118 #ifdef CONFIG_PCI_MSI
119 int (*msi_check_device)(struct pci_dev* dev,
120 int nvec, int type);
121 int (*setup_msi_irqs)(struct pci_dev *dev,
122 int nvec, int type);
123 void (*teardown_msi_irqs)(struct pci_dev *dev);
124 #endif
125
126 void (*restart)(char *cmd);
127 void (*power_off)(void);
128 void (*halt)(void);
129 void (*panic)(char *str);
130 void (*cpu_die)(void);
131
132 long (*time_init)(void); /* Optional, may be NULL */
133
134 int (*set_rtc_time)(struct rtc_time *);
135 void (*get_rtc_time)(struct rtc_time *);
136 unsigned long (*get_boot_time)(void);
137 unsigned char (*rtc_read_val)(int addr);
138 void (*rtc_write_val)(int addr, unsigned char val);
139
140 void (*calibrate_decr)(void);
141
142 void (*progress)(char *, unsigned short);
143
144 /* Interface for platform error logging */
145 void (*log_error)(char *buf, unsigned int err_type, int fatal);
146
147 unsigned char (*nvram_read_val)(int addr);
148 void (*nvram_write_val)(int addr, unsigned char val);
149 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
150 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
151 ssize_t (*nvram_size)(void);
152 void (*nvram_sync)(void);
153
154 /* Exception handlers */
155 int (*system_reset_exception)(struct pt_regs *regs);
156 int (*machine_check_exception)(struct pt_regs *regs);
157
158 /* Motherboard/chipset features. This is a kind of general purpose
159 * hook used to control some machine specific features (like reset
160 * lines, chip power control, etc...).
161 */
162 long (*feature_call)(unsigned int feature, ...);
163
164 /* Get legacy PCI/IDE interrupt mapping */
165 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
166
167 /* Get access protection for /dev/mem */
168 pgprot_t (*phys_mem_access_prot)(struct file *file,
169 unsigned long pfn,
170 unsigned long size,
171 pgprot_t vma_prot);
172
173 /*
174 * Function for waiting for work with reduced power in idle loop;
175 * called with interrupts disabled.
176 */
177 void (*power_save)(void);
178
179 /* Function to enable performance monitor counters for this
180 platform, called once per cpu. */
181 void (*enable_pmcs)(void);
182
183 /* Set DABR for this platform, leave empty for default implemenation */
184 int (*set_dabr)(unsigned long dabr,
185 unsigned long dabrx);
186
187 /* Set DAWR for this platform, leave empty for default implemenation */
188 int (*set_dawr)(unsigned long dawr,
189 unsigned long dawrx);
190
191 #ifdef CONFIG_PPC32 /* XXX for now */
192 /* A general init function, called by ppc_init in init/main.c.
193 May be NULL. */
194 void (*init)(void);
195
196 void (*kgdb_map_scc)(void);
197
198 /*
199 * optional PCI "hooks"
200 */
201 /* Called at then very end of pcibios_init() */
202 void (*pcibios_after_init)(void);
203
204 #endif /* CONFIG_PPC32 */
205
206 /* Called in indirect_* to avoid touching devices */
207 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
208
209 /* Called after PPC generic resource fixup to perform
210 machine specific fixups */
211 void (*pcibios_fixup_resources)(struct pci_dev *);
212
213 /* Called for each PCI bus in the system when it's probed */
214 void (*pcibios_fixup_bus)(struct pci_bus *);
215
216 /* Called when pci_enable_device() is called. Returns 0 to
217 * allow assignment/enabling of the device. */
218 int (*pcibios_enable_device_hook)(struct pci_dev *);
219
220 /* Called after scan and before resource survey */
221 void (*pcibios_fixup_phb)(struct pci_controller *hose);
222
223 /* Called during PCI resource reassignment */
224 resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned long type);
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 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
233
234 /* Called to do what every setup is needed on image and the
235 * reboot code buffer. Returns 0 on success.
236 * Provide your own (maybe dummy) implementation if your platform
237 * claims to support kexec.
238 */
239 int (*machine_kexec_prepare)(struct kimage *image);
240
241 /* Called to perform the _real_ kexec.
242 * Do NOT allocate memory or fail here. We are past the point of
243 * no return.
244 */
245 void (*machine_kexec)(struct kimage *image);
246 #endif /* CONFIG_KEXEC */
247
248 #ifdef CONFIG_SUSPEND
249 /* These are called to disable and enable, respectively, IRQs when
250 * entering a suspend state. If NULL, then the generic versions
251 * will be called. The generic versions disable/enable the
252 * decrementer along with interrupts.
253 */
254 void (*suspend_disable_irqs)(void);
255 void (*suspend_enable_irqs)(void);
256 #endif
257 int (*suspend_disable_cpu)(void);
258
259 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
260 ssize_t (*cpu_probe)(const char *, size_t);
261 ssize_t (*cpu_release)(const char *, size_t);
262 #endif
263 };
264
265 extern void e500_idle(void);
266 extern void power4_idle(void);
267 extern void power7_idle(void);
268 extern void ppc6xx_idle(void);
269 extern void book3e_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 */
276 extern struct machdep_calls ppc_md;
277 extern 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
293 extern void probe_machine(void);
294
295 extern 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 */
302 typedef 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;
308 extern sys_ctrler_t sys_ctrler;
309
310 #endif /* CONFIG_PPC_PMAC */
311
312
313 /* Functions to produce codes on the leds.
314 * The SRC code should be unique for the message category and should
315 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
316 * and (for boot & dump) should be sorted numerically in the order
317 * the events occur.
318 */
319 /* Print a boot progress message. */
320 void ppc64_boot_msg(unsigned int src, const char *msg);
321
log_error(char * buf,unsigned int err_type,int fatal)322 static inline void log_error(char *buf, unsigned int err_type, int fatal)
323 {
324 if (ppc_md.log_error)
325 ppc_md.log_error(buf, err_type, fatal);
326 }
327
328 #define __define_machine_initcall(mach, fn, id) \
329 static int __init __machine_initcall_##mach##_##fn(void) { \
330 if (machine_is(mach)) return fn(); \
331 return 0; \
332 } \
333 __define_initcall(__machine_initcall_##mach##_##fn, id);
334
335 #define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1)
336 #define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s)
337 #define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2)
338 #define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s)
339 #define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3)
340 #define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s)
341 #define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4)
342 #define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s)
343 #define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5)
344 #define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s)
345 #define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs)
346 #define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6)
347 #define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s)
348 #define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7)
349 #define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s)
350
351 #endif /* __KERNEL__ */
352 #endif /* _ASM_POWERPC_MACHDEP_H */
353