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
29 struct pci_controller;
36 void (*message_pass)(int target, int msg);
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);
49 struct machdep_calls {
52 void (*hpte_invalidate)(unsigned long slot,
56 long (*hpte_updatepp)(unsigned long slot,
61 void (*hpte_updateboltedpp)(unsigned long newpp,
64 long (*hpte_insert)(unsigned long hpte_group,
70 long (*hpte_remove)(unsigned long hpte_group);
71 void (*flush_hash_range)(unsigned long number, int local);
73 /* special for kexec, to be called in real mode, linar mapping is
74 * destroyed as well */
75 void (*hpte_clear_all)(void);
77 void (*tce_build)(struct iommu_table * tbl,
81 enum dma_data_direction direction);
82 void (*tce_free)(struct iommu_table *tbl,
85 unsigned long (*tce_get)(struct iommu_table *tbl,
87 void (*tce_flush)(struct iommu_table *tbl);
88 void (*pci_dma_dev_setup)(struct pci_dev *dev);
89 void (*pci_dma_bus_setup)(struct pci_bus *bus);
91 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
93 void (*iounmap)(volatile void __iomem *token);
96 void (*iommu_save)(void);
97 void (*iommu_restore)(void);
99 #endif /* CONFIG_PPC64 */
102 void (*setup_arch)(void);
103 void (*init_early)(void);
104 /* Optional, may be NULL. */
105 void (*show_cpuinfo)(struct seq_file *m);
106 void (*show_percpuinfo)(struct seq_file *m, int i);
108 void (*init_IRQ)(void);
109 unsigned int (*get_irq)(void);
111 void (*kexec_cpu_down)(int crash_shutdown, int secondary);
115 /* Called after scanning the bus, before allocating resources */
116 void (*pcibios_fixup)(void);
117 int (*pci_probe_mode)(struct pci_bus *);
118 void (*pci_irq_fixup)(struct pci_dev *dev);
120 /* To setup PHBs when using automatic OF platform driver for PCI */
121 int (*pci_setup_phb)(struct pci_controller *host);
123 #ifdef CONFIG_PCI_MSI
124 int (*msi_check_device)(struct pci_dev* dev,
126 int (*setup_msi_irqs)(struct pci_dev *dev,
128 void (*teardown_msi_irqs)(struct pci_dev *dev);
131 void (*restart)(char *cmd);
132 void (*power_off)(void);
134 void (*panic)(char *str);
135 void (*cpu_die)(void);
137 long (*time_init)(void); /* Optional, may be NULL */
139 int (*set_rtc_time)(struct rtc_time *);
140 void (*get_rtc_time)(struct rtc_time *);
141 unsigned long (*get_boot_time)(void);
142 unsigned char (*rtc_read_val)(int addr);
143 void (*rtc_write_val)(int addr, unsigned char val);
145 void (*calibrate_decr)(void);
147 void (*progress)(char *, unsigned short);
149 /* Interface for platform error logging */
150 void (*log_error)(char *buf, unsigned int err_type, int fatal);
152 unsigned char (*nvram_read_val)(int addr);
153 void (*nvram_write_val)(int addr, unsigned char val);
154 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
155 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
156 ssize_t (*nvram_size)(void);
157 void (*nvram_sync)(void);
159 /* Exception handlers */
160 int (*system_reset_exception)(struct pt_regs *regs);
161 int (*machine_check_exception)(struct pt_regs *regs);
163 /* Motherboard/chipset features. This is a kind of general purpose
164 * hook used to control some machine specific features (like reset
165 * lines, chip power control, etc...).
167 long (*feature_call)(unsigned int feature, ...);
169 /* Get legacy PCI/IDE interrupt mapping */
170 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
172 /* Get access protection for /dev/mem */
173 pgprot_t (*phys_mem_access_prot)(struct file *file,
178 /* Idle loop for this platform, leave empty for default idle loop */
179 void (*idle_loop)(void);
182 * Function for waiting for work with reduced power in idle loop;
183 * called with interrupts disabled.
185 void (*power_save)(void);
187 /* Function to enable performance monitor counters for this
188 platform, called once per cpu. */
189 void (*enable_pmcs)(void);
191 /* Set DABR for this platform, leave empty for default implemenation */
192 int (*set_dabr)(unsigned long dabr);
194 #ifdef CONFIG_PPC32 /* XXX for now */
195 /* A general init function, called by ppc_init in init/main.c.
199 void (*setup_io_mappings)(void);
201 void (*early_serial_map)(void);
202 void (*kgdb_map_scc)(void);
205 * optional PCI "hooks"
208 /* Called after PPC generic resource fixup to perform
209 machine specific fixups */
210 void (*pcibios_fixup_resources)(struct pci_dev *);
212 /* Called for each PCI bus in the system when it's probed */
213 void (*pcibios_fixup_bus)(struct pci_bus *);
215 /* Called when pci_enable_device() is called (initial=0) or
216 * when a device with no assigned resource is found (initial=1).
217 * Returns 0 to allow assignment/enabling of the device. */
218 int (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
220 /* Called in indirect_* to avoid touching devices */
221 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
223 /* Called at then very end of pcibios_init() */
224 void (*pcibios_after_init)(void);
226 #endif /* CONFIG_PPC32 */
228 /* Called to shutdown machine specific hardware not already controlled
231 void (*machine_shutdown)(void);
234 /* Called to do the minimal shutdown needed to run a kexec'd kernel
235 * to run successfully.
236 * XXX Should we move this one out of kexec scope?
238 void (*machine_crash_shutdown)(struct pt_regs *regs);
240 /* Called to do what every setup is needed on image and the
241 * reboot code buffer. Returns 0 on success.
242 * Provide your own (maybe dummy) implementation if your platform
243 * claims to support kexec.
245 int (*machine_kexec_prepare)(struct kimage *image);
247 /* Called to handle any machine specific cleanup on image */
248 void (*machine_kexec_cleanup)(struct kimage *image);
250 /* Called to perform the _real_ kexec.
251 * Do NOT allocate memory or fail here. We are past the point of
254 void (*machine_kexec)(struct kimage *image);
255 #endif /* CONFIG_KEXEC */
258 extern void power4_idle(void);
259 extern void power4_cpu_offline_powersave(void);
260 extern void ppc6xx_idle(void);
263 * ppc_md contains a copy of the machine description structure for the
264 * current platform. machine_id contains the initial address where the
265 * description was found during boot.
267 extern struct machdep_calls ppc_md;
268 extern struct machdep_calls *machine_id;
270 #define __machine_desc __attribute__ ((__section__ (".machine.desc")))
272 #define define_machine(name) \
273 extern struct machdep_calls mach_##name; \
274 EXPORT_SYMBOL(mach_##name); \
275 struct machdep_calls mach_##name __machine_desc =
277 #define machine_is(name) \
279 extern struct machdep_calls mach_##name \
280 __attribute__((weak)); \
281 machine_id == &mach_##name; \
284 extern void probe_machine(void);
286 extern char cmd_line[COMMAND_LINE_SIZE];
288 #ifdef CONFIG_PPC_PMAC
290 * Power macintoshes have either a CUDA, PMU or SMU controlling
291 * system reset, power, NVRAM, RTC.
293 typedef enum sys_ctrler_kind {
294 SYS_CTRLER_UNKNOWN = 0,
299 extern sys_ctrler_t sys_ctrler;
301 #endif /* CONFIG_PPC_PMAC */
303 extern void setup_pci_ptrs(void);
306 /* Poor default implementations */
307 extern void __devinit smp_generic_give_timebase(void);
308 extern void __devinit smp_generic_take_timebase(void);
309 #endif /* CONFIG_SMP */
312 /* Functions to produce codes on the leds.
313 * The SRC code should be unique for the message category and should
314 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
315 * and (for boot & dump) should be sorted numerically in the order
318 /* Print a boot progress message. */
319 void ppc64_boot_msg(unsigned int src, const char *msg);
320 /* Print a termination message (print only -- does not stop the kernel) */
321 void ppc64_terminate_msg(unsigned int src, const char *msg);
323 static inline void log_error(char *buf, unsigned int err_type, int fatal)
325 if (ppc_md.log_error)
326 ppc_md.log_error(buf, err_type, fatal);
329 #endif /* __KERNEL__ */
330 #endif /* _ASM_POWERPC_MACHDEP_H */