1 #ifndef _ASM_POWERPC_MACHDEP_H
2 #define _ASM_POWERPC_MACHDEP_H
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.
12 #include <linux/seq_file.h>
13 #include <linux/init.h>
14 #include <linux/dma-mapping.h>
16 #include <asm/setup.h>
18 /* We export this macro for external modules like Alsa to know if
19 * ppc_md.feature_call is implemented or not
21 #define CONFIG_PPC_HAS_FEATURE_CALLS
35 void (*message_pass
)(int target
, int msg
);
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
);
48 struct machdep_calls
{
51 void (*hpte_invalidate
)(unsigned long slot
,
55 long (*hpte_updatepp
)(unsigned long slot
,
60 void (*hpte_updateboltedpp
)(unsigned long newpp
,
63 long (*hpte_insert
)(unsigned long hpte_group
,
69 long (*hpte_remove
)(unsigned long hpte_group
);
70 void (*flush_hash_range
)(unsigned long number
, int local
);
72 /* special for kexec, to be called in real mode, linar mapping is
73 * destroyed as well */
74 void (*hpte_clear_all
)(void);
76 void (*tce_build
)(struct iommu_table
* tbl
,
80 enum dma_data_direction direction
);
81 void (*tce_free
)(struct iommu_table
*tbl
,
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 /* CONFIG_PPC64 */
91 void (*setup_arch
)(void);
92 void (*init_early
)(void);
93 /* Optional, may be NULL. */
94 void (*show_cpuinfo
)(struct seq_file
*m
);
95 void (*show_percpuinfo
)(struct seq_file
*m
, int i
);
97 void (*init_IRQ
)(void);
98 int (*get_irq
)(struct pt_regs
*);
100 void (*kexec_cpu_down
)(int crash_shutdown
, int secondary
);
104 /* Called after scanning the bus, before allocating resources */
105 void (*pcibios_fixup
)(void);
106 int (*pci_probe_mode
)(struct pci_bus
*);
108 void (*restart
)(char *cmd
);
109 void (*power_off
)(void);
111 void (*panic
)(char *str
);
112 void (*cpu_die
)(void);
114 long (*time_init
)(void); /* Optional, may be NULL */
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
);
122 void (*calibrate_decr
)(void);
124 void (*progress
)(char *, unsigned short);
126 /* Interface for platform error logging */
127 void (*log_error
)(char *buf
, unsigned int err_type
, int fatal
);
129 unsigned char (*nvram_read_val
)(int addr
);
130 void (*nvram_write_val
)(int addr
, unsigned char val
);
131 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);
136 /* Exception handlers */
137 int (*system_reset_exception
)(struct pt_regs
*regs
);
138 int (*machine_check_exception
)(struct pt_regs
*regs
);
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...).
144 long (*feature_call
)(unsigned int feature
, ...);
146 /* Check availability of legacy devices like i8042 */
147 int (*check_legacy_ioport
)(unsigned int baseport
);
149 /* Get legacy PCI/IDE interrupt mapping */
150 int (*pci_get_legacy_ide_irq
)(struct pci_dev
*dev
, int channel
);
152 /* Get access protection for /dev/mem */
153 pgprot_t (*phys_mem_access_prot
)(struct file
*file
,
158 /* Idle loop for this platform, leave empty for default idle loop */
159 void (*idle_loop
)(void);
162 * Function for waiting for work with reduced power in idle loop;
163 * called with interrupts disabled.
165 void (*power_save
)(void);
167 /* Function to enable performance monitor counters for this
168 platform, called once per cpu. */
169 void (*enable_pmcs
)(void);
171 /* Set DABR for this platform, leave empty for default implemenation */
172 int (*set_dabr
)(unsigned long dabr
);
174 #ifdef CONFIG_PPC32 /* XXX for now */
175 /* A general init function, called by ppc_init in init/main.c.
179 void (*setup_io_mappings
)(void);
181 void (*early_serial_map
)(void);
182 void (*kgdb_map_scc
)(void);
185 * optional PCI "hooks"
188 /* Called after PPC generic resource fixup to perform
189 machine specific fixups */
190 void (*pcibios_fixup_resources
)(struct pci_dev
*);
192 /* Called for each PCI bus in the system when it's probed */
193 void (*pcibios_fixup_bus
)(struct pci_bus
*);
195 /* Called when pci_enable_device() is called (initial=0) or
196 * when a device with no assigned resource is found (initial=1).
197 * Returns 0 to allow assignment/enabling of the device. */
198 int (*pcibios_enable_device_hook
)(struct pci_dev
*, int initial
);
200 /* For interrupt routing */
201 unsigned char (*pci_swizzle
)(struct pci_dev
*, unsigned char *);
202 int (*pci_map_irq
)(struct pci_dev
*, unsigned char, unsigned char);
204 /* Called in indirect_* to avoid touching devices */
205 int (*pci_exclude_device
)(unsigned char, unsigned char);
207 /* Called at then very end of pcibios_init() */
208 void (*pcibios_after_init
)(void);
210 #endif /* CONFIG_PPC32 */
212 /* Called to shutdown machine specific hardware not already controlled
215 void (*machine_shutdown
)(void);
218 /* Called to do the minimal shutdown needed to run a kexec'd kernel
219 * to run successfully.
220 * XXX Should we move this one out of kexec scope?
222 void (*machine_crash_shutdown
)(struct pt_regs
*regs
);
224 /* 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.
229 int (*machine_kexec_prepare
)(struct kimage
*image
);
231 /* Called to handle any machine specific cleanup on image */
232 void (*machine_kexec_cleanup
)(struct kimage
*image
);
234 /* Called to perform the _real_ kexec.
235 * Do NOT allocate memory or fail here. We are past the point of
238 void (*machine_kexec
)(struct kimage
*image
);
239 #endif /* CONFIG_KEXEC */
241 #ifdef CONFIG_PCI_MSI
242 int (*enable_msi
)(struct pci_dev
*pdev
);
243 void (*disable_msi
)(struct pci_dev
*pdev
);
244 #endif /* CONFIG_PCI_MSI */
247 extern void power4_idle(void);
248 extern void ppc6xx_idle(void);
251 * ppc_md contains a copy of the machine description structure for the
252 * current platform. machine_id contains the initial address where the
253 * description was found during boot.
255 extern struct machdep_calls ppc_md
;
256 extern struct machdep_calls
*machine_id
;
258 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
260 #define define_machine(name) \
261 extern struct machdep_calls mach_##name; \
262 EXPORT_SYMBOL(mach_##name); \
263 struct machdep_calls mach_##name __machine_desc =
265 #define machine_is(name) \
267 extern struct machdep_calls mach_##name \
268 __attribute__((weak)); \
269 machine_id == &mach_##name; \
272 extern void probe_machine(void);
274 extern char cmd_line
[COMMAND_LINE_SIZE
];
276 #ifdef CONFIG_PPC_PMAC
278 * Power macintoshes have either a CUDA, PMU or SMU controlling
279 * system reset, power, NVRAM, RTC.
281 typedef enum sys_ctrler_kind
{
282 SYS_CTRLER_UNKNOWN
= 0,
287 extern sys_ctrler_t sys_ctrler
;
289 #endif /* CONFIG_PPC_PMAC */
291 extern void setup_pci_ptrs(void);
294 /* Poor default implementations */
295 extern void __devinit
smp_generic_give_timebase(void);
296 extern void __devinit
smp_generic_take_timebase(void);
297 #endif /* CONFIG_SMP */
300 /* Functions to produce codes on the leds.
301 * The SRC code should be unique for the message category and should
302 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
303 * and (for boot & dump) should be sorted numerically in the order
306 /* Print a boot progress message. */
307 void ppc64_boot_msg(unsigned int src
, const char *msg
);
308 /* Print a termination message (print only -- does not stop the kernel) */
309 void ppc64_terminate_msg(unsigned int src
, const char *msg
);
311 static inline void log_error(char *buf
, unsigned int err_type
, int fatal
)
313 if (ppc_md
.log_error
)
314 ppc_md
.log_error(buf
, err_type
, fatal
);
317 #endif /* __KERNEL__ */
318 #endif /* _ASM_POWERPC_MACHDEP_H */