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 unsigned long (*tce_get)(struct iommu_table *tbl,
86 void (*tce_flush)(struct iommu_table *tbl);
87 void (*pci_dma_dev_setup)(struct pci_dev *dev);
88 void (*pci_dma_bus_setup)(struct pci_bus *bus);
89 #endif /* CONFIG_PPC64 */
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);
98 void (*init_IRQ)(void);
99 unsigned int (*get_irq)(void);
101 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
105 /* Called after scanning the bus, before allocating resources */
106 void (*pcibios_fixup)(void);
107 int (*pci_probe_mode)(struct pci_bus *);
108 void (*pci_irq_fixup)(struct pci_dev *dev);
110 void (*restart)(char *cmd);
111 void (*power_off)(void);
113 void (*panic)(char *str);
114 void (*cpu_die)(void);
116 long (*time_init)(void); /* Optional, may be NULL */
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);
124 void (*calibrate_decr)(void);
126 void (*progress)(char *, unsigned short);
128 /* Interface for platform error logging */
129 void (*log_error)(char *buf, unsigned int err_type, int fatal);
131 unsigned char (*nvram_read_val)(int addr);
132 void (*nvram_write_val)(int addr, unsigned char val);
133 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);
138 /* Exception handlers */
139 int (*system_reset_exception)(struct pt_regs *regs);
140 int (*machine_check_exception)(struct pt_regs *regs);
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...).
146 long (*feature_call)(unsigned int feature, ...);
148 /* Check availability of legacy devices like i8042 */
149 int (*check_legacy_ioport)(unsigned int baseport);
151 /* Get legacy PCI/IDE interrupt mapping */
152 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
154 /* Get access protection for /dev/mem */
155 pgprot_t (*phys_mem_access_prot)(struct file *file,
160 /* Idle loop for this platform, leave empty for default idle loop */
161 void (*idle_loop)(void);
164 * Function for waiting for work with reduced power in idle loop;
165 * called with interrupts disabled.
167 void (*power_save)(void);
169 /* Function to enable performance monitor counters for this
170 platform, called once per cpu. */
171 void (*enable_pmcs)(void);
173 /* Set DABR for this platform, leave empty for default implemenation */
174 int (*set_dabr)(unsigned long dabr);
176 #ifdef CONFIG_PPC32 /* XXX for now */
177 /* A general init function, called by ppc_init in init/main.c.
181 void (*setup_io_mappings)(void);
183 void (*early_serial_map)(void);
184 void (*kgdb_map_scc)(void);
187 * optional PCI "hooks"
190 /* Called after PPC generic resource fixup to perform
191 machine specific fixups */
192 void (*pcibios_fixup_resources)(struct pci_dev *);
194 /* Called for each PCI bus in the system when it's probed */
195 void (*pcibios_fixup_bus)(struct pci_bus *);
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);
202 /* Called in indirect_* to avoid touching devices */
203 int (*pci_exclude_device)(unsigned char, unsigned char);
205 /* Called at then very end of pcibios_init() */
206 void (*pcibios_after_init)(void);
208 #endif /* CONFIG_PPC32 */
210 /* Called to shutdown machine specific hardware not already controlled
213 void (*machine_shutdown)(void);
216 /* Called to do the minimal shutdown needed to run a kexec'd kernel
217 * to run successfully.
218 * XXX Should we move this one out of kexec scope?
220 void (*machine_crash_shutdown)(struct pt_regs *regs);
222 /* Called to do what every setup is needed on image and the
223 * reboot code buffer. Returns 0 on success.
224 * Provide your own (maybe dummy) implementation if your platform
225 * claims to support kexec.
227 int (*machine_kexec_prepare)(struct kimage *image);
229 /* Called to handle any machine specific cleanup on image */
230 void (*machine_kexec_cleanup)(struct kimage *image);
232 /* Called to perform the _real_ kexec.
233 * Do NOT allocate memory or fail here. We are past the point of
236 void (*machine_kexec)(struct kimage *image);
237 #endif /* CONFIG_KEXEC */
239 #ifdef CONFIG_PCI_MSI
240 int (*enable_msi)(struct pci_dev *pdev);
241 void (*disable_msi)(struct pci_dev *pdev);
242 #endif /* CONFIG_PCI_MSI */
245 extern void power4_idle(void);
246 extern void ppc6xx_idle(void);
249 * ppc_md contains a copy of the machine description structure for the
250 * current platform. machine_id contains the initial address where the
251 * description was found during boot.
253 extern struct machdep_calls ppc_md;
254 extern struct machdep_calls *machine_id;
256 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
258 #define define_machine(name) \
259 extern struct machdep_calls mach_##name; \
260 EXPORT_SYMBOL(mach_##name); \
261 struct machdep_calls mach_##name __machine_desc =
263 #define machine_is(name) \
265 extern struct machdep_calls mach_##name \
266 __attribute__((weak)); \
267 machine_id == &mach_##name; \
270 extern void probe_machine(void);
272 extern char cmd_line[COMMAND_LINE_SIZE];
274 #ifdef CONFIG_PPC_PMAC
276 * Power macintoshes have either a CUDA, PMU or SMU controlling
277 * system reset, power, NVRAM, RTC.
279 typedef enum sys_ctrler_kind {
280 SYS_CTRLER_UNKNOWN = 0,
285 extern sys_ctrler_t sys_ctrler;
287 #endif /* CONFIG_PPC_PMAC */
289 extern void setup_pci_ptrs(void);
292 /* Poor default implementations */
293 extern void __devinit smp_generic_give_timebase(void);
294 extern void __devinit smp_generic_take_timebase(void);
295 #endif /* CONFIG_SMP */
298 /* Functions to produce codes on the leds.
299 * The SRC code should be unique for the message category and should
300 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
301 * and (for boot & dump) should be sorted numerically in the order
304 /* Print a boot progress message. */
305 void ppc64_boot_msg(unsigned int src, const char *msg);
306 /* Print a termination message (print only -- does not stop the kernel) */
307 void ppc64_terminate_msg(unsigned int src, const char *msg);
309 static inline void log_error(char *buf, unsigned int err_type, int fatal)
311 if (ppc_md.log_error)
312 ppc_md.log_error(buf, err_type, fatal);
315 #endif /* __KERNEL__ */
316 #endif /* _ASM_POWERPC_MACHDEP_H */