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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>
Paul Gortmaker93087942011-07-29 16:19:31 +100015#include <linux/export.h>
Paul Mackerras143a1de2005-10-19 23:11:21 +100016
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
24struct pt_regs;
25struct pci_bus;
26struct device_node;
27struct iommu_table;
28struct rtc_time;
29struct file;
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +110030struct pci_controller;
Michael Ellerman3d1229d2005-11-14 23:35:00 +110031struct kimage;
Paul Mackerras143a1de2005-10-19 23:11:21 +100032
Paul Mackerras143a1de2005-10-19 23:11:21 +100033struct machdep_calls {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110034 char *name;
Paul Mackerras143a1de2005-10-19 23:11:21 +100035#ifdef CONFIG_PPC64
36 void (*hpte_invalidate)(unsigned long slot,
37 unsigned long va,
Paul Mackerras1189be62007-10-11 20:37:10 +100038 int psize, int ssize,
Paul Mackerras143a1de2005-10-19 23:11:21 +100039 int local);
40 long (*hpte_updatepp)(unsigned long slot,
41 unsigned long newpp,
42 unsigned long va,
Paul Mackerras1189be62007-10-11 20:37:10 +100043 int psize, int ssize,
Paul Mackerras143a1de2005-10-19 23:11:21 +100044 int local);
45 void (*hpte_updateboltedpp)(unsigned long newpp,
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +110046 unsigned long ea,
Paul Mackerras1189be62007-10-11 20:37:10 +100047 int psize, int ssize);
Paul Mackerras143a1de2005-10-19 23:11:21 +100048 long (*hpte_insert)(unsigned long hpte_group,
49 unsigned long va,
50 unsigned long prpn,
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +110051 unsigned long rflags,
Paul Mackerras143a1de2005-10-19 23:11:21 +100052 unsigned long vflags,
Paul Mackerras1189be62007-10-11 20:37:10 +100053 int psize, int ssize);
Paul Mackerras143a1de2005-10-19 23:11:21 +100054 long (*hpte_remove)(unsigned long hpte_group);
Badari Pulavartyf8c88032008-01-29 09:19:24 +110055 void (*hpte_removebolted)(unsigned long ea,
56 int psize, int ssize);
Paul Mackerras143a1de2005-10-19 23:11:21 +100057 void (*flush_hash_range)(unsigned long number, int local);
58
Sonny Raobee376f2010-11-18 00:39:23 +000059 /* special for kexec, to be called in real mode, linear mapping is
Paul Mackerras143a1de2005-10-19 23:11:21 +100060 * destroyed as well */
61 void (*hpte_clear_all)(void);
62
Robert Jennings6490c492008-07-24 04:31:16 +100063 int (*tce_build)(struct iommu_table *tbl,
Paul Mackerras143a1de2005-10-19 23:11:21 +100064 long index,
65 long npages,
66 unsigned long uaddr,
Mark Nelson4f3dd8a2008-07-16 05:51:47 +100067 enum dma_data_direction direction,
68 struct dma_attrs *attrs);
Paul Mackerras143a1de2005-10-19 23:11:21 +100069 void (*tce_free)(struct iommu_table *tbl,
70 long index,
71 long npages);
Haren Myneni5f508672006-06-22 23:35:10 -070072 unsigned long (*tce_get)(struct iommu_table *tbl,
73 long index);
Paul Mackerras143a1de2005-10-19 23:11:21 +100074 void (*tce_flush)(struct iommu_table *tbl);
Benjamin Herrenschmidt4cb3cee2006-11-11 17:25:10 +110075
Benjamin Herrenschmidt68a64352006-11-13 09:27:39 +110076 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
Benjamin Herrenschmidt1cdab552009-02-22 16:19:14 +000077 unsigned long flags, void *caller);
Benjamin Herrenschmidt68a64352006-11-13 09:27:39 +110078 void (*iounmap)(volatile void __iomem *token);
Johannes Berg7e115802007-05-03 22:28:32 +100079
80#ifdef CONFIG_PM
81 void (*iommu_save)(void);
82 void (*iommu_restore)(void);
83#endif
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110084#endif /* CONFIG_PPC64 */
Paul Mackerras143a1de2005-10-19 23:11:21 +100085
Becky Bruce4fc665b2008-09-12 10:34:46 +000086 void (*pci_dma_dev_setup)(struct pci_dev *dev);
87 void (*pci_dma_bus_setup)(struct pci_bus *bus);
88
Milton Miller6a5c7be2011-06-24 09:05:22 +000089 /* Platform set_dma_mask and dma_get_required_mask overrides */
Benjamin Herrenschmidt5b6e9ff2010-08-30 19:23:52 +000090 int (*dma_set_mask)(struct device *dev, u64 dma_mask);
Milton Miller6a5c7be2011-06-24 09:05:22 +000091 u64 (*dma_get_required_mask)(struct device *dev);
Benjamin Herrenschmidt5b6e9ff2010-08-30 19:23:52 +000092
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110093 int (*probe)(void);
Grant Likely38db7e72007-10-11 04:48:18 +100094 void (*setup_arch)(void); /* Optional, may be NULL */
Paul Mackerras143a1de2005-10-19 23:11:21 +100095 void (*init_early)(void);
96 /* Optional, may be NULL. */
Paul Mackerrasd8699e62005-10-20 17:02:01 +100097 void (*show_cpuinfo)(struct seq_file *m);
98 void (*show_percpuinfo)(struct seq_file *m, int i);
Paul Mackerras143a1de2005-10-19 23:11:21 +100099
100 void (*init_IRQ)(void);
Michael Ellerman9b647a32009-04-22 15:31:38 +0000101
102 /* Return an irq, or NO_IRQ to indicate there are none pending.
103 * If for some reason there is no irq, but the interrupt
104 * shouldn't be counted as spurious, return NO_IRQ_IGNORE. */
Olaf Hering35a84c22006-10-07 22:08:26 +1000105 unsigned int (*get_irq)(void);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000106
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 *);
Benjamin Herrenschmidtf90bb152006-11-11 17:24:51 +1100111 void (*pci_irq_fixup)(struct pci_dev *dev);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000112
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100113 /* To setup PHBs when using automatic OF platform driver for PCI */
114 int (*pci_setup_phb)(struct pci_controller *host);
115
Michael Ellermandf87ef52007-05-08 12:58:34 +1000116#ifdef CONFIG_PCI_MSI
117 int (*msi_check_device)(struct pci_dev* dev,
118 int nvec, int type);
119 int (*setup_msi_irqs)(struct pci_dev *dev,
120 int nvec, int type);
121 void (*teardown_msi_irqs)(struct pci_dev *dev);
122#endif
123
Paul Mackerras143a1de2005-10-19 23:11:21 +1000124 void (*restart)(char *cmd);
125 void (*power_off)(void);
126 void (*halt)(void);
127 void (*panic)(char *str);
128 void (*cpu_die)(void);
129
130 long (*time_init)(void); /* Optional, may be NULL */
131
132 int (*set_rtc_time)(struct rtc_time *);
133 void (*get_rtc_time)(struct rtc_time *);
134 unsigned long (*get_boot_time)(void);
135 unsigned char (*rtc_read_val)(int addr);
136 void (*rtc_write_val)(int addr, unsigned char val);
137
138 void (*calibrate_decr)(void);
139
140 void (*progress)(char *, unsigned short);
141
142 /* Interface for platform error logging */
143 void (*log_error)(char *buf, unsigned int err_type, int fatal);
144
Paul Mackerras35499c02005-10-22 16:02:39 +1000145 unsigned char (*nvram_read_val)(int addr);
146 void (*nvram_write_val)(int addr, unsigned char val);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000147 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
148 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
149 ssize_t (*nvram_size)(void);
150 void (*nvram_sync)(void);
151
152 /* Exception handlers */
Arnd Bergmannc902be72006-01-04 19:55:53 +0000153 int (*system_reset_exception)(struct pt_regs *regs);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000154 int (*machine_check_exception)(struct pt_regs *regs);
155
156 /* Motherboard/chipset features. This is a kind of general purpose
157 * hook used to control some machine specific features (like reset
158 * lines, chip power control, etc...).
159 */
160 long (*feature_call)(unsigned int feature, ...);
161
Paul Mackerras143a1de2005-10-19 23:11:21 +1000162 /* Get legacy PCI/IDE interrupt mapping */
163 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
164
165 /* Get access protection for /dev/mem */
166 pgprot_t (*phys_mem_access_prot)(struct file *file,
Roland Dreier8b150472005-10-28 17:46:18 -0700167 unsigned long pfn,
Paul Mackerras143a1de2005-10-19 23:11:21 +1000168 unsigned long size,
169 pgprot_t vma_prot);
170
171 /* Idle loop for this platform, leave empty for default idle loop */
172 void (*idle_loop)(void);
173
Paul Mackerrasa0652fc2006-03-27 15:03:03 +1100174 /*
175 * Function for waiting for work with reduced power in idle loop;
176 * called with interrupts disabled.
177 */
178 void (*power_save)(void);
179
Paul Mackerras143a1de2005-10-19 23:11:21 +1000180 /* Function to enable performance monitor counters for this
181 platform, called once per cpu. */
182 void (*enable_pmcs)(void);
183
Michael Ellerman76032de2005-11-07 13:12:03 +1100184 /* Set DABR for this platform, leave empty for default implemenation */
185 int (*set_dabr)(unsigned long dabr);
186
Paul Mackerras143a1de2005-10-19 23:11:21 +1000187#ifdef CONFIG_PPC32 /* XXX for now */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000188 /* A general init function, called by ppc_init in init/main.c.
189 May be NULL. */
190 void (*init)(void);
191
Paul Mackerras143a1de2005-10-19 23:11:21 +1000192 void (*kgdb_map_scc)(void);
193
Paul Mackerras143a1de2005-10-19 23:11:21 +1000194 /*
195 * optional PCI "hooks"
196 */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000197 /* Called at then very end of pcibios_init() */
198 void (*pcibios_after_init)(void);
199
Michael Ellerman3d1229d2005-11-14 23:35:00 +1100200#endif /* CONFIG_PPC32 */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000201
Kumar Gala89c2dd62009-08-25 16:20:45 +0000202 /* Called in indirect_* to avoid touching devices */
203 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
204
Benjamin Herrenschmidtbf5e2ba2007-12-20 14:54:51 +1100205 /* Called after PPC generic resource fixup to perform
206 machine specific fixups */
207 void (*pcibios_fixup_resources)(struct pci_dev *);
208
209 /* Called for each PCI bus in the system when it's probed */
210 void (*pcibios_fixup_bus)(struct pci_bus *);
211
Benjamin Herrenschmidt549beb92007-12-20 14:54:57 +1100212 /* Called when pci_enable_device() is called. Returns 0 to
213 * allow assignment/enabling of the device. */
214 int (*pcibios_enable_device_hook)(struct pci_dev *);
215
Paul Mackerras143a1de2005-10-19 23:11:21 +1000216 /* Called to shutdown machine specific hardware not already controlled
217 * by other drivers.
Paul Mackerras143a1de2005-10-19 23:11:21 +1000218 */
219 void (*machine_shutdown)(void);
220
Michael Ellerman3d1229d2005-11-14 23:35:00 +1100221#ifdef CONFIG_KEXEC
Anton Blanchard50266a12011-01-06 17:54:15 +0000222 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
223
Paul Mackerras143a1de2005-10-19 23:11:21 +1000224 /* Called to do what every setup is needed on image and the
225 * reboot code buffer. Returns 0 on success.
226 * Provide your own (maybe dummy) implementation if your platform
227 * claims to support kexec.
228 */
229 int (*machine_kexec_prepare)(struct kimage *image);
Anton Blanchard357574c2011-02-23 12:46:16 +0000230
231 /* Called to perform the _real_ kexec.
232 * Do NOT allocate memory or fail here. We are past the point of
233 * no return.
234 */
235 void (*machine_kexec)(struct kimage *image);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000236#endif /* CONFIG_KEXEC */
Scott Wood7ac5dde2007-12-13 04:35:19 +1100237
238#ifdef CONFIG_SUSPEND
239 /* These are called to disable and enable, respectively, IRQs when
240 * entering a suspend state. If NULL, then the generic versions
241 * will be called. The generic versions disable/enable the
242 * decrementer along with interrupts.
243 */
244 void (*suspend_disable_irqs)(void);
245 void (*suspend_enable_irqs)(void);
246#endif
Brian King32d8ad42010-07-07 12:31:02 +0000247 int (*suspend_disable_cpu)(void);
Nathan Fontenot12633e82009-11-25 17:23:25 +0000248
249#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
250 ssize_t (*cpu_probe)(const char *, size_t);
251 ssize_t (*cpu_release)(const char *, size_t);
252#endif
Paul Mackerras143a1de2005-10-19 23:11:21 +1000253};
254
Kumar Galafc4033b2008-06-18 16:26:52 -0500255extern void e500_idle(void);
Paul Mackerrasa0652fc2006-03-27 15:03:03 +1100256extern void power4_idle(void);
Benjamin Herrenschmidt948cf672011-01-24 18:42:41 +1100257extern void power7_idle(void);
Paul Mackerrasa0652fc2006-03-27 15:03:03 +1100258extern void ppc6xx_idle(void);
Benjamin Herrenschmidt34d97e02010-07-14 14:12:16 +1000259extern void book3e_idle(void);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000260
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100261/*
262 * ppc_md contains a copy of the machine description structure for the
263 * current platform. machine_id contains the initial address where the
264 * description was found during boot.
265 */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000266extern struct machdep_calls ppc_md;
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100267extern struct machdep_calls *machine_id;
268
269#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
270
Paul Mackerrasd0e15be2006-04-23 10:42:04 +1000271#define define_machine(name) \
272 extern struct machdep_calls mach_##name; \
273 EXPORT_SYMBOL(mach_##name); \
274 struct machdep_calls mach_##name __machine_desc =
275
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100276#define machine_is(name) \
277 ({ \
278 extern struct machdep_calls mach_##name \
279 __attribute__((weak)); \
280 machine_id == &mach_##name; \
281 })
282
283extern void probe_machine(void);
284
Paul Mackerras143a1de2005-10-19 23:11:21 +1000285extern char cmd_line[COMMAND_LINE_SIZE];
286
287#ifdef CONFIG_PPC_PMAC
288/*
289 * Power macintoshes have either a CUDA, PMU or SMU controlling
290 * system reset, power, NVRAM, RTC.
291 */
292typedef enum sys_ctrler_kind {
293 SYS_CTRLER_UNKNOWN = 0,
294 SYS_CTRLER_CUDA = 1,
295 SYS_CTRLER_PMU = 2,
296 SYS_CTRLER_SMU = 3,
297} sys_ctrler_t;
298extern sys_ctrler_t sys_ctrler;
299
300#endif /* CONFIG_PPC_PMAC */
301
Paul Mackerras143a1de2005-10-19 23:11:21 +1000302
303/* Functions to produce codes on the leds.
304 * The SRC code should be unique for the message category and should
305 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
306 * and (for boot & dump) should be sorted numerically in the order
307 * the events occur.
308 */
309/* Print a boot progress message. */
310void ppc64_boot_msg(unsigned int src, const char *msg);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000311
312static inline void log_error(char *buf, unsigned int err_type, int fatal)
313{
314 if (ppc_md.log_error)
315 ppc_md.log_error(buf, err_type, fatal);
316}
317
Grant Likely800d68c2007-12-02 17:10:28 +1100318#define __define_machine_initcall(mach,level,fn,id) \
319 static int __init __machine_initcall_##mach##_##fn(void) { \
320 if (machine_is(mach)) return fn(); \
321 return 0; \
322 } \
323 __define_initcall(level,__machine_initcall_##mach##_##fn,id);
324
325#define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1)
326#define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s)
327#define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2)
328#define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
329#define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3)
330#define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s)
331#define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4)
332#define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s)
333#define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5)
334#define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s)
335#define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs)
336#define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6)
337#define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s)
338#define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7)
339#define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s)
340
Paul Mackerras143a1de2005-10-19 23:11:21 +1000341#endif /* __KERNEL__ */
Paul Mackerrasb41fc4f2005-10-26 21:53:19 +1000342#endif /* _ASM_POWERPC_MACHDEP_H */