tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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/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;
30#ifdef CONFIG_KEXEC
31struct kimage;
32#endif
33
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 char *name;
51#ifdef CONFIG_PPC64
52 void (*hpte_invalidate)(unsigned long slot,
53 unsigned long va,
54 int psize,
55 int local);
56 long (*hpte_updatepp)(unsigned long slot,
57 unsigned long newpp,
58 unsigned long va,
59 int pize,
60 int local);
61 void (*hpte_updateboltedpp)(unsigned long newpp,
62 unsigned long ea,
63 int psize);
64 long (*hpte_insert)(unsigned long hpte_group,
65 unsigned long va,
66 unsigned long prpn,
67 unsigned long rflags,
68 unsigned long vflags,
69 int psize);
70 long (*hpte_remove)(unsigned long hpte_group);
71 void (*flush_hash_range)(unsigned long number, int local);
72
73 /* special for kexec, to be called in real mode, linar mapping is
74 * destroyed as well */
75 void (*hpte_clear_all)(void);
76
77 void (*tce_build)(struct iommu_table * tbl,
78 long index,
79 long npages,
80 unsigned long uaddr,
81 enum dma_data_direction direction);
82 void (*tce_free)(struct iommu_table *tbl,
83 long index,
84 long npages);
85 void (*tce_flush)(struct iommu_table *tbl);
86 void (*iommu_dev_setup)(struct pci_dev *dev);
87 void (*iommu_bus_setup)(struct pci_bus *bus);
88 void (*irq_bus_setup)(struct pci_bus *bus);
89#endif /* CONFIG_PPC64 */
90
91 int (*probe)(void);
92 void (*setup_arch)(void);
93 void (*init_early)(void);
94 /* Optional, may be NULL. */
95 void (*show_cpuinfo)(struct seq_file *m);
96 void (*show_percpuinfo)(struct seq_file *m, int i);
97
98 void (*init_IRQ)(void);
99 int (*get_irq)(struct pt_regs *);
100#ifdef CONFIG_KEXEC
101 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
102#endif
103
104 /* PCI stuff */
105 /* Called after scanning the bus, before allocating resources */
106 void (*pcibios_fixup)(void);
107 int (*pci_probe_mode)(struct pci_bus *);
108
109 void (*restart)(char *cmd);
110 void (*power_off)(void);
111 void (*halt)(void);
112 void (*panic)(char *str);
113 void (*cpu_die)(void);
114
115 long (*time_init)(void); /* Optional, may be NULL */
116
117 int (*set_rtc_time)(struct rtc_time *);
118 void (*get_rtc_time)(struct rtc_time *);
119 unsigned long (*get_boot_time)(void);
120 unsigned char (*rtc_read_val)(int addr);
121 void (*rtc_write_val)(int addr, unsigned char val);
122
123 void (*calibrate_decr)(void);
124
125 void (*progress)(char *, unsigned short);
126
127 /* Interface for platform error logging */
128 void (*log_error)(char *buf, unsigned int err_type, int fatal);
129
130 unsigned char (*nvram_read_val)(int addr);
131 void (*nvram_write_val)(int addr, unsigned char val);
132 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
133 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
134 ssize_t (*nvram_size)(void);
135 void (*nvram_sync)(void);
136
137 /* Exception handlers */
138 int (*system_reset_exception)(struct pt_regs *regs);
139 int (*machine_check_exception)(struct pt_regs *regs);
140
141 /* Motherboard/chipset features. This is a kind of general purpose
142 * hook used to control some machine specific features (like reset
143 * lines, chip power control, etc...).
144 */
145 long (*feature_call)(unsigned int feature, ...);
146
147 /* Check availability of legacy devices like i8042 */
148 int (*check_legacy_ioport)(unsigned int baseport);
149
150 /* Get legacy PCI/IDE interrupt mapping */
151 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
152
153 /* Get access protection for /dev/mem */
154 pgprot_t (*phys_mem_access_prot)(struct file *file,
155 unsigned long pfn,
156 unsigned long size,
157 pgprot_t vma_prot);
158
159 /* Idle loop for this platform, leave empty for default idle loop */
160 void (*idle_loop)(void);
161
162 /*
163 * Function for waiting for work with reduced power in idle loop;
164 * called with interrupts disabled.
165 */
166 void (*power_save)(void);
167
168 /* Function to enable performance monitor counters for this
169 platform, called once per cpu. */
170 void (*enable_pmcs)(void);
171
172 /* Set DABR for this platform, leave empty for default implemenation */
173 int (*set_dabr)(unsigned long dabr);
174
175#ifdef CONFIG_PPC32 /* XXX for now */
176 /* A general init function, called by ppc_init in init/main.c.
177 May be NULL. */
178 void (*init)(void);
179
180 void (*setup_io_mappings)(void);
181
182 void (*early_serial_map)(void);
183 void (*kgdb_map_scc)(void);
184
185 /*
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#endif /* CONFIG_PPC32 */
212
213 /* Called to shutdown machine specific hardware not already controlled
214 * by other drivers.
215 */
216 void (*machine_shutdown)(void);
217
218#ifdef CONFIG_KEXEC
219 /* Called to do the minimal shutdown needed to run a kexec'd kernel
220 * to run successfully.
221 * XXX Should we move this one out of kexec scope?
222 */
223 void (*machine_crash_shutdown)(struct pt_regs *regs);
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 handle any machine specific cleanup on image */
233 void (*machine_kexec_cleanup)(struct kimage *image);
234
235 /* Called to perform the _real_ kexec.
236 * Do NOT allocate memory or fail here. We are past the point of
237 * no return.
238 */
239 void (*machine_kexec)(struct kimage *image);
240#endif /* CONFIG_KEXEC */
241};
242
243extern void power4_idle(void);
244extern void ppc6xx_idle(void);
245
246/*
247 * ppc_md contains a copy of the machine description structure for the
248 * current platform. machine_id contains the initial address where the
249 * description was found during boot.
250 */
251extern struct machdep_calls ppc_md;
252extern struct machdep_calls *machine_id;
253
254#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
255
256#define define_machine(name) \
257 extern struct machdep_calls mach_##name; \
258 EXPORT_SYMBOL(mach_##name); \
259 struct machdep_calls mach_##name __machine_desc =
260
261#define machine_is(name) \
262 ({ \
263 extern struct machdep_calls mach_##name \
264 __attribute__((weak)); \
265 machine_id == &mach_##name; \
266 })
267
268extern void probe_machine(void);
269
270extern char cmd_line[COMMAND_LINE_SIZE];
271
272#ifdef CONFIG_PPC_PMAC
273/*
274 * Power macintoshes have either a CUDA, PMU or SMU controlling
275 * system reset, power, NVRAM, RTC.
276 */
277typedef enum sys_ctrler_kind {
278 SYS_CTRLER_UNKNOWN = 0,
279 SYS_CTRLER_CUDA = 1,
280 SYS_CTRLER_PMU = 2,
281 SYS_CTRLER_SMU = 3,
282} sys_ctrler_t;
283extern sys_ctrler_t sys_ctrler;
284
285#endif /* CONFIG_PPC_PMAC */
286
287extern void setup_pci_ptrs(void);
288
289#ifdef CONFIG_SMP
290/* Poor default implementations */
291extern void __devinit smp_generic_give_timebase(void);
292extern void __devinit smp_generic_take_timebase(void);
293#endif /* CONFIG_SMP */
294
295
296/* Functions to produce codes on the leds.
297 * The SRC code should be unique for the message category and should
298 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
299 * and (for boot & dump) should be sorted numerically in the order
300 * the events occur.
301 */
302/* Print a boot progress message. */
303void ppc64_boot_msg(unsigned int src, const char *msg);
304/* Print a termination message (print only -- does not stop the kernel) */
305void ppc64_terminate_msg(unsigned int src, const char *msg);
306
307static inline void log_error(char *buf, unsigned int err_type, int fatal)
308{
309 if (ppc_md.log_error)
310 ppc_md.log_error(buf, err_type, fatal);
311}
312
313#endif /* __KERNEL__ */
314#endif /* _ASM_POWERPC_MACHDEP_H */