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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;
Michael Ellerman3d1229d2005-11-14 23:35:00 +110029#ifdef CONFIG_KEXEC
30struct kimage;
31#endif
Paul Mackerras143a1de2005-10-19 23:11:21 +100032
33#ifdef CONFIG_SMP
34struct smp_ops_t {
35 void (*message_pass)(int target, int msg);
36 int (*probe)(void);
37 void (*kick_cpu)(int nr);
38 void (*setup_cpu)(int nr);
39 void (*take_timebase)(void);
40 void (*give_timebase)(void);
41 int (*cpu_enable)(unsigned int nr);
42 int (*cpu_disable)(void);
43 void (*cpu_die)(unsigned int nr);
44 int (*cpu_bootable)(unsigned int nr);
45};
46#endif
47
48struct machdep_calls {
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110049 char *name;
Paul Mackerras143a1de2005-10-19 23:11:21 +100050#ifdef CONFIG_PPC64
51 void (*hpte_invalidate)(unsigned long slot,
52 unsigned long va,
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +110053 int psize,
Paul Mackerras143a1de2005-10-19 23:11:21 +100054 int local);
55 long (*hpte_updatepp)(unsigned long slot,
56 unsigned long newpp,
57 unsigned long va,
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +110058 int pize,
Paul Mackerras143a1de2005-10-19 23:11:21 +100059 int local);
60 void (*hpte_updateboltedpp)(unsigned long newpp,
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +110061 unsigned long ea,
62 int psize);
Paul Mackerras143a1de2005-10-19 23:11:21 +100063 long (*hpte_insert)(unsigned long hpte_group,
64 unsigned long va,
65 unsigned long prpn,
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +110066 unsigned long rflags,
Paul Mackerras143a1de2005-10-19 23:11:21 +100067 unsigned long vflags,
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +110068 int psize);
Paul Mackerras143a1de2005-10-19 23:11:21 +100069 long (*hpte_remove)(unsigned long hpte_group);
70 void (*flush_hash_range)(unsigned long number, int local);
71
72 /* special for kexec, to be called in real mode, linar mapping is
73 * destroyed as well */
74 void (*hpte_clear_all)(void);
75
76 void (*tce_build)(struct iommu_table * tbl,
77 long index,
78 long npages,
79 unsigned long uaddr,
80 enum dma_data_direction direction);
81 void (*tce_free)(struct iommu_table *tbl,
82 long index,
83 long npages);
Haren Myneni5f508672006-06-22 23:35:10 -070084 unsigned long (*tce_get)(struct iommu_table *tbl,
85 long index);
Paul Mackerras143a1de2005-10-19 23:11:21 +100086 void (*tce_flush)(struct iommu_table *tbl);
87 void (*iommu_dev_setup)(struct pci_dev *dev);
88 void (*iommu_bus_setup)(struct pci_bus *bus);
89 void (*irq_bus_setup)(struct pci_bus *bus);
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110090#endif /* CONFIG_PPC64 */
Paul Mackerras143a1de2005-10-19 23:11:21 +100091
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +110092 int (*probe)(void);
Paul Mackerras143a1de2005-10-19 23:11:21 +100093 void (*setup_arch)(void);
94 void (*init_early)(void);
95 /* Optional, may be NULL. */
Paul Mackerrasd8699e62005-10-20 17:02:01 +100096 void (*show_cpuinfo)(struct seq_file *m);
97 void (*show_percpuinfo)(struct seq_file *m, int i);
Paul Mackerras143a1de2005-10-19 23:11:21 +100098
99 void (*init_IRQ)(void);
Benjamin Herrenschmidt0ebfff12006-07-03 21:36:01 +1000100 unsigned int (*get_irq)(struct pt_regs *);
Michael Ellermanc5e24352005-11-12 00:06:05 +1100101#ifdef CONFIG_KEXEC
102 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
103#endif
Paul Mackerras143a1de2005-10-19 23:11:21 +1000104
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
110 void (*restart)(char *cmd);
111 void (*power_off)(void);
112 void (*halt)(void);
113 void (*panic)(char *str);
114 void (*cpu_die)(void);
115
116 long (*time_init)(void); /* Optional, may be NULL */
117
118 int (*set_rtc_time)(struct rtc_time *);
119 void (*get_rtc_time)(struct rtc_time *);
120 unsigned long (*get_boot_time)(void);
121 unsigned char (*rtc_read_val)(int addr);
122 void (*rtc_write_val)(int addr, unsigned char val);
123
124 void (*calibrate_decr)(void);
125
126 void (*progress)(char *, unsigned short);
127
128 /* Interface for platform error logging */
129 void (*log_error)(char *buf, unsigned int err_type, int fatal);
130
Paul Mackerras35499c02005-10-22 16:02:39 +1000131 unsigned char (*nvram_read_val)(int addr);
132 void (*nvram_write_val)(int addr, unsigned char val);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000133 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
134 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
135 ssize_t (*nvram_size)(void);
136 void (*nvram_sync)(void);
137
138 /* Exception handlers */
Arnd Bergmannc902be72006-01-04 19:55:53 +0000139 int (*system_reset_exception)(struct pt_regs *regs);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000140 int (*machine_check_exception)(struct pt_regs *regs);
141
142 /* Motherboard/chipset features. This is a kind of general purpose
143 * hook used to control some machine specific features (like reset
144 * lines, chip power control, etc...).
145 */
146 long (*feature_call)(unsigned int feature, ...);
147
148 /* Check availability of legacy devices like i8042 */
149 int (*check_legacy_ioport)(unsigned int baseport);
150
151 /* Get legacy PCI/IDE interrupt mapping */
152 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
153
154 /* Get access protection for /dev/mem */
155 pgprot_t (*phys_mem_access_prot)(struct file *file,
Roland Dreier8b150472005-10-28 17:46:18 -0700156 unsigned long pfn,
Paul Mackerras143a1de2005-10-19 23:11:21 +1000157 unsigned long size,
158 pgprot_t vma_prot);
159
160 /* Idle loop for this platform, leave empty for default idle loop */
161 void (*idle_loop)(void);
162
Paul Mackerrasa0652fc2006-03-27 15:03:03 +1100163 /*
164 * Function for waiting for work with reduced power in idle loop;
165 * called with interrupts disabled.
166 */
167 void (*power_save)(void);
168
Paul Mackerras143a1de2005-10-19 23:11:21 +1000169 /* Function to enable performance monitor counters for this
170 platform, called once per cpu. */
171 void (*enable_pmcs)(void);
172
Michael Ellerman76032de2005-11-07 13:12:03 +1100173 /* Set DABR for this platform, leave empty for default implemenation */
174 int (*set_dabr)(unsigned long dabr);
175
Paul Mackerras143a1de2005-10-19 23:11:21 +1000176#ifdef CONFIG_PPC32 /* XXX for now */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000177 /* A general init function, called by ppc_init in init/main.c.
178 May be NULL. */
179 void (*init)(void);
180
Paul Mackerras143a1de2005-10-19 23:11:21 +1000181 void (*setup_io_mappings)(void);
182
183 void (*early_serial_map)(void);
184 void (*kgdb_map_scc)(void);
185
Paul Mackerras143a1de2005-10-19 23:11:21 +1000186 /*
187 * optional PCI "hooks"
188 */
189
190 /* Called after PPC generic resource fixup to perform
191 machine specific fixups */
192 void (*pcibios_fixup_resources)(struct pci_dev *);
193
194 /* Called for each PCI bus in the system when it's probed */
195 void (*pcibios_fixup_bus)(struct pci_bus *);
196
197 /* Called when pci_enable_device() is called (initial=0) or
198 * when a device with no assigned resource is found (initial=1).
199 * Returns 0 to allow assignment/enabling of the device. */
200 int (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
201
202 /* For interrupt routing */
203 unsigned char (*pci_swizzle)(struct pci_dev *, unsigned char *);
204 int (*pci_map_irq)(struct pci_dev *, unsigned char, unsigned char);
205
206 /* Called in indirect_* to avoid touching devices */
207 int (*pci_exclude_device)(unsigned char, unsigned char);
208
209 /* Called at then very end of pcibios_init() */
210 void (*pcibios_after_init)(void);
211
Michael Ellerman3d1229d2005-11-14 23:35:00 +1100212#endif /* CONFIG_PPC32 */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000213
Paul Mackerras143a1de2005-10-19 23:11:21 +1000214 /* Called to shutdown machine specific hardware not already controlled
215 * by other drivers.
Paul Mackerras143a1de2005-10-19 23:11:21 +1000216 */
217 void (*machine_shutdown)(void);
218
Michael Ellerman3d1229d2005-11-14 23:35:00 +1100219#ifdef CONFIG_KEXEC
Paul Mackerras143a1de2005-10-19 23:11:21 +1000220 /* Called to do the minimal shutdown needed to run a kexec'd kernel
221 * to run successfully.
222 * XXX Should we move this one out of kexec scope?
223 */
Michael Ellermancd0ca2c2005-12-04 18:39:12 +1100224 void (*machine_crash_shutdown)(struct pt_regs *regs);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000225
226 /* Called to do what every setup is needed on image and the
227 * reboot code buffer. Returns 0 on success.
228 * Provide your own (maybe dummy) implementation if your platform
229 * claims to support kexec.
230 */
231 int (*machine_kexec_prepare)(struct kimage *image);
232
233 /* Called to handle any machine specific cleanup on image */
234 void (*machine_kexec_cleanup)(struct kimage *image);
235
236 /* Called to perform the _real_ kexec.
237 * Do NOT allocate memory or fail here. We are past the point of
238 * no return.
239 */
240 void (*machine_kexec)(struct kimage *image);
241#endif /* CONFIG_KEXEC */
Jake Moilanen204face2006-06-07 16:15:10 -0500242
243#ifdef CONFIG_PCI_MSI
244 int (*enable_msi)(struct pci_dev *pdev);
245 void (*disable_msi)(struct pci_dev *pdev);
246#endif /* CONFIG_PCI_MSI */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000247};
248
Paul Mackerrasa0652fc2006-03-27 15:03:03 +1100249extern void power4_idle(void);
250extern void ppc6xx_idle(void);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000251
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100252/*
253 * ppc_md contains a copy of the machine description structure for the
254 * current platform. machine_id contains the initial address where the
255 * description was found during boot.
256 */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000257extern struct machdep_calls ppc_md;
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100258extern struct machdep_calls *machine_id;
259
260#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
261
Paul Mackerrasd0e15be2006-04-23 10:42:04 +1000262#define define_machine(name) \
263 extern struct machdep_calls mach_##name; \
264 EXPORT_SYMBOL(mach_##name); \
265 struct machdep_calls mach_##name __machine_desc =
266
Benjamin Herrenschmidte8222502006-03-28 23:15:54 +1100267#define machine_is(name) \
268 ({ \
269 extern struct machdep_calls mach_##name \
270 __attribute__((weak)); \
271 machine_id == &mach_##name; \
272 })
273
274extern void probe_machine(void);
275
Paul Mackerras143a1de2005-10-19 23:11:21 +1000276extern char cmd_line[COMMAND_LINE_SIZE];
277
278#ifdef CONFIG_PPC_PMAC
279/*
280 * Power macintoshes have either a CUDA, PMU or SMU controlling
281 * system reset, power, NVRAM, RTC.
282 */
283typedef enum sys_ctrler_kind {
284 SYS_CTRLER_UNKNOWN = 0,
285 SYS_CTRLER_CUDA = 1,
286 SYS_CTRLER_PMU = 2,
287 SYS_CTRLER_SMU = 3,
288} sys_ctrler_t;
289extern sys_ctrler_t sys_ctrler;
290
291#endif /* CONFIG_PPC_PMAC */
292
293extern void setup_pci_ptrs(void);
294
295#ifdef CONFIG_SMP
296/* Poor default implementations */
297extern void __devinit smp_generic_give_timebase(void);
298extern void __devinit smp_generic_take_timebase(void);
299#endif /* CONFIG_SMP */
300
301
302/* Functions to produce codes on the leds.
303 * The SRC code should be unique for the message category and should
304 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
305 * and (for boot & dump) should be sorted numerically in the order
306 * the events occur.
307 */
308/* Print a boot progress message. */
309void ppc64_boot_msg(unsigned int src, const char *msg);
310/* Print a termination message (print only -- does not stop the kernel) */
311void ppc64_terminate_msg(unsigned int src, const char *msg);
312
313static 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#endif /* __KERNEL__ */
Paul Mackerrasb41fc4f2005-10-26 21:53:19 +1000320#endif /* _ASM_POWERPC_MACHDEP_H */