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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
12#include <linux/config.h>
13#include <linux/seq_file.h>
14#include <linux/init.h>
15#include <linux/dma-mapping.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
24struct pt_regs;
25struct pci_bus;
26struct device_node;
27struct iommu_table;
28struct rtc_time;
29struct file;
Michael Ellerman3d1229d2005-11-14 23:35:00 +110030#ifdef CONFIG_KEXEC
31struct kimage;
32#endif
Paul Mackerras143a1de2005-10-19 23:11:21 +100033
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 {
50#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);
84 void (*tce_flush)(struct iommu_table *tbl);
85 void (*iommu_dev_setup)(struct pci_dev *dev);
86 void (*iommu_bus_setup)(struct pci_bus *bus);
87 void (*irq_bus_setup)(struct pci_bus *bus);
88#endif
89
90 int (*probe)(int platform);
91 void (*setup_arch)(void);
92 void (*init_early)(void);
93 /* Optional, may be NULL. */
Paul Mackerrasd8699e62005-10-20 17:02:01 +100094 void (*show_cpuinfo)(struct seq_file *m);
95 void (*show_percpuinfo)(struct seq_file *m, int i);
Paul Mackerras143a1de2005-10-19 23:11:21 +100096
97 void (*init_IRQ)(void);
98 int (*get_irq)(struct pt_regs *);
Michael Ellermanc5e24352005-11-12 00:06:05 +110099#ifdef CONFIG_KEXEC
100 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
101#endif
Paul Mackerras143a1de2005-10-19 23:11:21 +1000102
103 /* PCI stuff */
104 /* Called after scanning the bus, before allocating resources */
105 void (*pcibios_fixup)(void);
106 int (*pci_probe_mode)(struct pci_bus *);
107
108 void (*restart)(char *cmd);
109 void (*power_off)(void);
110 void (*halt)(void);
111 void (*panic)(char *str);
112 void (*cpu_die)(void);
113
114 long (*time_init)(void); /* Optional, may be NULL */
115
116 int (*set_rtc_time)(struct rtc_time *);
117 void (*get_rtc_time)(struct rtc_time *);
118 unsigned long (*get_boot_time)(void);
119 unsigned char (*rtc_read_val)(int addr);
120 void (*rtc_write_val)(int addr, unsigned char val);
121
122 void (*calibrate_decr)(void);
123
124 void (*progress)(char *, unsigned short);
125
126 /* Interface for platform error logging */
127 void (*log_error)(char *buf, unsigned int err_type, int fatal);
128
Paul Mackerras35499c02005-10-22 16:02:39 +1000129 unsigned char (*nvram_read_val)(int addr);
130 void (*nvram_write_val)(int addr, unsigned char val);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000131 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
132 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
133 ssize_t (*nvram_size)(void);
134 void (*nvram_sync)(void);
135
136 /* Exception handlers */
Arnd Bergmannc902be72006-01-04 19:55:53 +0000137 int (*system_reset_exception)(struct pt_regs *regs);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000138 int (*machine_check_exception)(struct pt_regs *regs);
139
140 /* Motherboard/chipset features. This is a kind of general purpose
141 * hook used to control some machine specific features (like reset
142 * lines, chip power control, etc...).
143 */
144 long (*feature_call)(unsigned int feature, ...);
145
146 /* Check availability of legacy devices like i8042 */
147 int (*check_legacy_ioport)(unsigned int baseport);
148
149 /* Get legacy PCI/IDE interrupt mapping */
150 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
151
152 /* Get access protection for /dev/mem */
153 pgprot_t (*phys_mem_access_prot)(struct file *file,
Roland Dreier8b150472005-10-28 17:46:18 -0700154 unsigned long pfn,
Paul Mackerras143a1de2005-10-19 23:11:21 +1000155 unsigned long size,
156 pgprot_t vma_prot);
157
158 /* Idle loop for this platform, leave empty for default idle loop */
159 void (*idle_loop)(void);
160
161 /* Function to enable performance monitor counters for this
162 platform, called once per cpu. */
163 void (*enable_pmcs)(void);
164
Michael Ellerman76032de2005-11-07 13:12:03 +1100165 /* Set DABR for this platform, leave empty for default implemenation */
166 int (*set_dabr)(unsigned long dabr);
167
Paul Mackerras143a1de2005-10-19 23:11:21 +1000168#ifdef CONFIG_PPC32 /* XXX for now */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000169 /* A general init function, called by ppc_init in init/main.c.
170 May be NULL. */
171 void (*init)(void);
172
173 void (*idle)(void);
174 void (*power_save)(void);
175
176 void (*heartbeat)(void);
177 unsigned long heartbeat_reset;
178 unsigned long heartbeat_count;
179
Paul Mackerras143a1de2005-10-19 23:11:21 +1000180 void (*setup_io_mappings)(void);
181
182 void (*early_serial_map)(void);
183 void (*kgdb_map_scc)(void);
184
Paul Mackerras143a1de2005-10-19 23:11:21 +1000185 /*
186 * optional PCI "hooks"
187 */
188
189 /* Called after PPC generic resource fixup to perform
190 machine specific fixups */
191 void (*pcibios_fixup_resources)(struct pci_dev *);
192
193 /* Called for each PCI bus in the system when it's probed */
194 void (*pcibios_fixup_bus)(struct pci_bus *);
195
196 /* Called when pci_enable_device() is called (initial=0) or
197 * when a device with no assigned resource is found (initial=1).
198 * Returns 0 to allow assignment/enabling of the device. */
199 int (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
200
201 /* For interrupt routing */
202 unsigned char (*pci_swizzle)(struct pci_dev *, unsigned char *);
203 int (*pci_map_irq)(struct pci_dev *, unsigned char, unsigned char);
204
205 /* Called in indirect_* to avoid touching devices */
206 int (*pci_exclude_device)(unsigned char, unsigned char);
207
208 /* Called at then very end of pcibios_init() */
209 void (*pcibios_after_init)(void);
210
211 /* this is for modules, since _machine can be a define -- Cort */
212 int ppc_machine;
Michael Ellerman3d1229d2005-11-14 23:35:00 +1100213#endif /* CONFIG_PPC32 */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000214
Paul Mackerras143a1de2005-10-19 23:11:21 +1000215 /* Called to shutdown machine specific hardware not already controlled
216 * by other drivers.
Paul Mackerras143a1de2005-10-19 23:11:21 +1000217 */
218 void (*machine_shutdown)(void);
219
Michael Ellerman3d1229d2005-11-14 23:35:00 +1100220#ifdef CONFIG_KEXEC
Paul Mackerras143a1de2005-10-19 23:11:21 +1000221 /* Called to do the minimal shutdown needed to run a kexec'd kernel
222 * to run successfully.
223 * XXX Should we move this one out of kexec scope?
224 */
Michael Ellermancd0ca2c2005-12-04 18:39:12 +1100225 void (*machine_crash_shutdown)(struct pt_regs *regs);
Paul Mackerras143a1de2005-10-19 23:11:21 +1000226
227 /* Called to do what every setup is needed on image and the
228 * reboot code buffer. Returns 0 on success.
229 * Provide your own (maybe dummy) implementation if your platform
230 * claims to support kexec.
231 */
232 int (*machine_kexec_prepare)(struct kimage *image);
233
234 /* Called to handle any machine specific cleanup on image */
235 void (*machine_kexec_cleanup)(struct kimage *image);
236
237 /* Called to perform the _real_ kexec.
238 * Do NOT allocate memory or fail here. We are past the point of
239 * no return.
240 */
241 void (*machine_kexec)(struct kimage *image);
242#endif /* CONFIG_KEXEC */
Paul Mackerras143a1de2005-10-19 23:11:21 +1000243};
244
245extern void default_idle(void);
246extern void native_idle(void);
247
248extern struct machdep_calls ppc_md;
249extern char cmd_line[COMMAND_LINE_SIZE];
250
251#ifdef CONFIG_PPC_PMAC
252/*
253 * Power macintoshes have either a CUDA, PMU or SMU controlling
254 * system reset, power, NVRAM, RTC.
255 */
256typedef enum sys_ctrler_kind {
257 SYS_CTRLER_UNKNOWN = 0,
258 SYS_CTRLER_CUDA = 1,
259 SYS_CTRLER_PMU = 2,
260 SYS_CTRLER_SMU = 3,
261} sys_ctrler_t;
262extern sys_ctrler_t sys_ctrler;
263
264#endif /* CONFIG_PPC_PMAC */
265
266extern void setup_pci_ptrs(void);
267
268#ifdef CONFIG_SMP
269/* Poor default implementations */
270extern void __devinit smp_generic_give_timebase(void);
271extern void __devinit smp_generic_take_timebase(void);
272#endif /* CONFIG_SMP */
273
274
275/* Functions to produce codes on the leds.
276 * The SRC code should be unique for the message category and should
277 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
278 * and (for boot & dump) should be sorted numerically in the order
279 * the events occur.
280 */
281/* Print a boot progress message. */
282void ppc64_boot_msg(unsigned int src, const char *msg);
283/* Print a termination message (print only -- does not stop the kernel) */
284void ppc64_terminate_msg(unsigned int src, const char *msg);
285
286static inline void log_error(char *buf, unsigned int err_type, int fatal)
287{
288 if (ppc_md.log_error)
289 ppc_md.log_error(buf, err_type, fatal);
290}
291
292#endif /* __KERNEL__ */
Paul Mackerrasb41fc4f2005-10-26 21:53:19 +1000293#endif /* _ASM_POWERPC_MACHDEP_H */