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/seq_file.h> 13 #include <linux/init.h> 14 #include <linux/dma-mapping.h> 15 16 #include <asm/setup.h> 17 18 /* We export this macro for external modules like Alsa to know if 19 * ppc_md.feature_call is implemented or not 20 */ 21 #define CONFIG_PPC_HAS_FEATURE_CALLS 22 23 struct pt_regs; 24 struct pci_bus; 25 struct device_node; 26 struct iommu_table; 27 struct rtc_time; 28 struct file; 29 struct pci_controller; 30 #ifdef CONFIG_KEXEC 31 struct kimage; 32 #endif 33 34 #ifdef CONFIG_SMP 35 struct 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 49 struct machdep_calls { 50 char *name; 51 #ifdef CONFIG_PPC64 52 void (*hpte_invalidate)(unsigned long slot, 53 unsigned long va, 54 int psize, int ssize, 55 int local); 56 long (*hpte_updatepp)(unsigned long slot, 57 unsigned long newpp, 58 unsigned long va, 59 int psize, int ssize, 60 int local); 61 void (*hpte_updateboltedpp)(unsigned long newpp, 62 unsigned long ea, 63 int psize, int ssize); 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, int ssize); 70 long (*hpte_remove)(unsigned long hpte_group); 71 void (*hpte_removebolted)(unsigned long ea, 72 int psize, int ssize); 73 void (*flush_hash_range)(unsigned long number, int local); 74 75 /* special for kexec, to be called in real mode, linar mapping is 76 * destroyed as well */ 77 void (*hpte_clear_all)(void); 78 79 int (*tce_build)(struct iommu_table *tbl, 80 long index, 81 long npages, 82 unsigned long uaddr, 83 enum dma_data_direction direction, 84 struct dma_attrs *attrs); 85 void (*tce_free)(struct iommu_table *tbl, 86 long index, 87 long npages); 88 unsigned long (*tce_get)(struct iommu_table *tbl, 89 long index); 90 void (*tce_flush)(struct iommu_table *tbl); 91 92 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, 93 unsigned long flags, void *caller); 94 void (*iounmap)(volatile void __iomem *token); 95 96 #ifdef CONFIG_PM 97 void (*iommu_save)(void); 98 void (*iommu_restore)(void); 99 #endif 100 #endif /* CONFIG_PPC64 */ 101 102 void (*pci_dma_dev_setup)(struct pci_dev *dev); 103 void (*pci_dma_bus_setup)(struct pci_bus *bus); 104 105 int (*probe)(void); 106 void (*setup_arch)(void); /* Optional, may be NULL */ 107 void (*init_early)(void); 108 /* Optional, may be NULL. */ 109 void (*show_cpuinfo)(struct seq_file *m); 110 void (*show_percpuinfo)(struct seq_file *m, int i); 111 112 void (*init_IRQ)(void); 113 114 /* Return an irq, or NO_IRQ to indicate there are none pending. 115 * If for some reason there is no irq, but the interrupt 116 * shouldn't be counted as spurious, return NO_IRQ_IGNORE. */ 117 unsigned int (*get_irq)(void); 118 #ifdef CONFIG_KEXEC 119 void (*kexec_cpu_down)(int crash_shutdown, int secondary); 120 #endif 121 122 /* PCI stuff */ 123 /* Called after scanning the bus, before allocating resources */ 124 void (*pcibios_fixup)(void); 125 int (*pci_probe_mode)(struct pci_bus *); 126 void (*pci_irq_fixup)(struct pci_dev *dev); 127 128 /* To setup PHBs when using automatic OF platform driver for PCI */ 129 int (*pci_setup_phb)(struct pci_controller *host); 130 131 #ifdef CONFIG_PCI_MSI 132 int (*msi_check_device)(struct pci_dev* dev, 133 int nvec, int type); 134 int (*setup_msi_irqs)(struct pci_dev *dev, 135 int nvec, int type); 136 void (*teardown_msi_irqs)(struct pci_dev *dev); 137 #endif 138 139 void (*restart)(char *cmd); 140 void (*power_off)(void); 141 void (*halt)(void); 142 void (*panic)(char *str); 143 void (*cpu_die)(void); 144 145 long (*time_init)(void); /* Optional, may be NULL */ 146 147 int (*set_rtc_time)(struct rtc_time *); 148 void (*get_rtc_time)(struct rtc_time *); 149 unsigned long (*get_boot_time)(void); 150 unsigned char (*rtc_read_val)(int addr); 151 void (*rtc_write_val)(int addr, unsigned char val); 152 153 void (*calibrate_decr)(void); 154 155 void (*progress)(char *, unsigned short); 156 157 /* Interface for platform error logging */ 158 void (*log_error)(char *buf, unsigned int err_type, int fatal); 159 160 unsigned char (*nvram_read_val)(int addr); 161 void (*nvram_write_val)(int addr, unsigned char val); 162 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 163 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 164 ssize_t (*nvram_size)(void); 165 void (*nvram_sync)(void); 166 167 /* Exception handlers */ 168 int (*system_reset_exception)(struct pt_regs *regs); 169 int (*machine_check_exception)(struct pt_regs *regs); 170 171 /* Motherboard/chipset features. This is a kind of general purpose 172 * hook used to control some machine specific features (like reset 173 * lines, chip power control, etc...). 174 */ 175 long (*feature_call)(unsigned int feature, ...); 176 177 /* Get legacy PCI/IDE interrupt mapping */ 178 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 179 180 /* Get access protection for /dev/mem */ 181 pgprot_t (*phys_mem_access_prot)(struct file *file, 182 unsigned long pfn, 183 unsigned long size, 184 pgprot_t vma_prot); 185 186 /* Idle loop for this platform, leave empty for default idle loop */ 187 void (*idle_loop)(void); 188 189 /* 190 * Function for waiting for work with reduced power in idle loop; 191 * called with interrupts disabled. 192 */ 193 void (*power_save)(void); 194 195 /* Function to enable performance monitor counters for this 196 platform, called once per cpu. */ 197 void (*enable_pmcs)(void); 198 199 /* Set DABR for this platform, leave empty for default implemenation */ 200 int (*set_dabr)(unsigned long dabr); 201 202 #ifdef CONFIG_PPC32 /* XXX for now */ 203 /* A general init function, called by ppc_init in init/main.c. 204 May be NULL. */ 205 void (*init)(void); 206 207 void (*kgdb_map_scc)(void); 208 209 /* 210 * optional PCI "hooks" 211 */ 212 /* Called at then very end of pcibios_init() */ 213 void (*pcibios_after_init)(void); 214 215 #endif /* CONFIG_PPC32 */ 216 217 /* Called in indirect_* to avoid touching devices */ 218 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); 219 220 /* Called after PPC generic resource fixup to perform 221 machine specific fixups */ 222 void (*pcibios_fixup_resources)(struct pci_dev *); 223 224 /* Called for each PCI bus in the system when it's probed */ 225 void (*pcibios_fixup_bus)(struct pci_bus *); 226 227 /* Called when pci_enable_device() is called. Returns 0 to 228 * allow assignment/enabling of the device. */ 229 int (*pcibios_enable_device_hook)(struct pci_dev *); 230 231 /* Called to shutdown machine specific hardware not already controlled 232 * by other drivers. 233 */ 234 void (*machine_shutdown)(void); 235 236 #ifdef CONFIG_KEXEC 237 /* Called to do the minimal shutdown needed to run a kexec'd kernel 238 * to run successfully. 239 * XXX Should we move this one out of kexec scope? 240 */ 241 void (*machine_crash_shutdown)(struct pt_regs *regs); 242 243 /* Called to do what every setup is needed on image and the 244 * reboot code buffer. Returns 0 on success. 245 * Provide your own (maybe dummy) implementation if your platform 246 * claims to support kexec. 247 */ 248 int (*machine_kexec_prepare)(struct kimage *image); 249 250 /* Called to handle any machine specific cleanup on image */ 251 void (*machine_kexec_cleanup)(struct kimage *image); 252 253 /* Called to perform the _real_ kexec. 254 * Do NOT allocate memory or fail here. We are past the point of 255 * no return. 256 */ 257 void (*machine_kexec)(struct kimage *image); 258 #endif /* CONFIG_KEXEC */ 259 260 #ifdef CONFIG_SUSPEND 261 /* These are called to disable and enable, respectively, IRQs when 262 * entering a suspend state. If NULL, then the generic versions 263 * will be called. The generic versions disable/enable the 264 * decrementer along with interrupts. 265 */ 266 void (*suspend_disable_irqs)(void); 267 void (*suspend_enable_irqs)(void); 268 #endif 269 }; 270 271 extern void e500_idle(void); 272 extern void power4_idle(void); 273 extern void power4_cpu_offline_powersave(void); 274 extern void ppc6xx_idle(void); 275 276 /* 277 * ppc_md contains a copy of the machine description structure for the 278 * current platform. machine_id contains the initial address where the 279 * description was found during boot. 280 */ 281 extern struct machdep_calls ppc_md; 282 extern struct machdep_calls *machine_id; 283 284 #define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 285 286 #define define_machine(name) \ 287 extern struct machdep_calls mach_##name; \ 288 EXPORT_SYMBOL(mach_##name); \ 289 struct machdep_calls mach_##name __machine_desc = 290 291 #define machine_is(name) \ 292 ({ \ 293 extern struct machdep_calls mach_##name \ 294 __attribute__((weak)); \ 295 machine_id == &mach_##name; \ 296 }) 297 298 extern void probe_machine(void); 299 300 extern char cmd_line[COMMAND_LINE_SIZE]; 301 302 #ifdef CONFIG_PPC_PMAC 303 /* 304 * Power macintoshes have either a CUDA, PMU or SMU controlling 305 * system reset, power, NVRAM, RTC. 306 */ 307 typedef enum sys_ctrler_kind { 308 SYS_CTRLER_UNKNOWN = 0, 309 SYS_CTRLER_CUDA = 1, 310 SYS_CTRLER_PMU = 2, 311 SYS_CTRLER_SMU = 3, 312 } sys_ctrler_t; 313 extern sys_ctrler_t sys_ctrler; 314 315 #endif /* CONFIG_PPC_PMAC */ 316 317 extern void setup_pci_ptrs(void); 318 319 #ifdef CONFIG_SMP 320 /* Poor default implementations */ 321 extern void __devinit smp_generic_give_timebase(void); 322 extern void __devinit smp_generic_take_timebase(void); 323 #endif /* CONFIG_SMP */ 324 325 326 /* Functions to produce codes on the leds. 327 * The SRC code should be unique for the message category and should 328 * be limited to the lower 24 bits (the upper 8 are set by these funcs), 329 * and (for boot & dump) should be sorted numerically in the order 330 * the events occur. 331 */ 332 /* Print a boot progress message. */ 333 void ppc64_boot_msg(unsigned int src, const char *msg); 334 335 static inline void log_error(char *buf, unsigned int err_type, int fatal) 336 { 337 if (ppc_md.log_error) 338 ppc_md.log_error(buf, err_type, fatal); 339 } 340 341 #define __define_machine_initcall(mach,level,fn,id) \ 342 static int __init __machine_initcall_##mach##_##fn(void) { \ 343 if (machine_is(mach)) return fn(); \ 344 return 0; \ 345 } \ 346 __define_initcall(level,__machine_initcall_##mach##_##fn,id); 347 348 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1) 349 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s) 350 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2) 351 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s) 352 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3) 353 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s) 354 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4) 355 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s) 356 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5) 357 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s) 358 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs) 359 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6) 360 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s) 361 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7) 362 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s) 363 364 void generic_suspend_disable_irqs(void); 365 void generic_suspend_enable_irqs(void); 366 367 #endif /* __KERNEL__ */ 368 #endif /* _ASM_POWERPC_MACHDEP_H */ 369