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 struct kimage; 31 32 #ifdef CONFIG_SMP 33 struct smp_ops_t { 34 void (*message_pass)(int target, int msg); 35 int (*probe)(void); 36 void (*kick_cpu)(int nr); 37 void (*setup_cpu)(int nr); 38 void (*take_timebase)(void); 39 void (*give_timebase)(void); 40 int (*cpu_enable)(unsigned int nr); 41 int (*cpu_disable)(void); 42 void (*cpu_die)(unsigned int nr); 43 int (*cpu_bootable)(unsigned int nr); 44 }; 45 #endif 46 47 struct machdep_calls { 48 char *name; 49 #ifdef CONFIG_PPC64 50 void (*hpte_invalidate)(unsigned long slot, 51 unsigned long va, 52 int psize, int ssize, 53 int local); 54 long (*hpte_updatepp)(unsigned long slot, 55 unsigned long newpp, 56 unsigned long va, 57 int psize, int ssize, 58 int local); 59 void (*hpte_updateboltedpp)(unsigned long newpp, 60 unsigned long ea, 61 int psize, int ssize); 62 long (*hpte_insert)(unsigned long hpte_group, 63 unsigned long va, 64 unsigned long prpn, 65 unsigned long rflags, 66 unsigned long vflags, 67 int psize, int ssize); 68 long (*hpte_remove)(unsigned long hpte_group); 69 void (*hpte_removebolted)(unsigned long ea, 70 int psize, int ssize); 71 void (*flush_hash_range)(unsigned long number, int local); 72 73 /* special for kexec, to be called in real mode, linear mapping is 74 * destroyed as well */ 75 void (*hpte_clear_all)(void); 76 77 int (*tce_build)(struct iommu_table *tbl, 78 long index, 79 long npages, 80 unsigned long uaddr, 81 enum dma_data_direction direction, 82 struct dma_attrs *attrs); 83 void (*tce_free)(struct iommu_table *tbl, 84 long index, 85 long npages); 86 unsigned long (*tce_get)(struct iommu_table *tbl, 87 long index); 88 void (*tce_flush)(struct iommu_table *tbl); 89 90 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, 91 unsigned long flags, void *caller); 92 void (*iounmap)(volatile void __iomem *token); 93 94 #ifdef CONFIG_PM 95 void (*iommu_save)(void); 96 void (*iommu_restore)(void); 97 #endif 98 #endif /* CONFIG_PPC64 */ 99 100 void (*pci_dma_dev_setup)(struct pci_dev *dev); 101 void (*pci_dma_bus_setup)(struct pci_bus *bus); 102 103 /* Platform set_dma_mask override */ 104 int (*dma_set_mask)(struct device *dev, u64 dma_mask); 105 106 int (*probe)(void); 107 void (*setup_arch)(void); /* Optional, may be NULL */ 108 void (*init_early)(void); 109 /* Optional, may be NULL. */ 110 void (*show_cpuinfo)(struct seq_file *m); 111 void (*show_percpuinfo)(struct seq_file *m, int i); 112 113 void (*init_IRQ)(void); 114 115 /* Return an irq, or NO_IRQ to indicate there are none pending. 116 * If for some reason there is no irq, but the interrupt 117 * shouldn't be counted as spurious, return NO_IRQ_IGNORE. */ 118 unsigned int (*get_irq)(void); 119 #ifdef CONFIG_KEXEC 120 void (*kexec_cpu_down)(int crash_shutdown, int secondary); 121 #endif 122 123 /* PCI stuff */ 124 /* Called after scanning the bus, before allocating resources */ 125 void (*pcibios_fixup)(void); 126 int (*pci_probe_mode)(struct pci_bus *); 127 void (*pci_irq_fixup)(struct pci_dev *dev); 128 129 /* To setup PHBs when using automatic OF platform driver for PCI */ 130 int (*pci_setup_phb)(struct pci_controller *host); 131 132 #ifdef CONFIG_PCI_MSI 133 int (*msi_check_device)(struct pci_dev* dev, 134 int nvec, int type); 135 int (*setup_msi_irqs)(struct pci_dev *dev, 136 int nvec, int type); 137 void (*teardown_msi_irqs)(struct pci_dev *dev); 138 #endif 139 140 void (*restart)(char *cmd); 141 void (*power_off)(void); 142 void (*halt)(void); 143 void (*panic)(char *str); 144 void (*cpu_die)(void); 145 146 long (*time_init)(void); /* Optional, may be NULL */ 147 148 int (*set_rtc_time)(struct rtc_time *); 149 void (*get_rtc_time)(struct rtc_time *); 150 unsigned long (*get_boot_time)(void); 151 unsigned char (*rtc_read_val)(int addr); 152 void (*rtc_write_val)(int addr, unsigned char val); 153 154 void (*calibrate_decr)(void); 155 156 void (*progress)(char *, unsigned short); 157 158 /* Interface for platform error logging */ 159 void (*log_error)(char *buf, unsigned int err_type, int fatal); 160 161 unsigned char (*nvram_read_val)(int addr); 162 void (*nvram_write_val)(int addr, unsigned char val); 163 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 164 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 165 ssize_t (*nvram_size)(void); 166 void (*nvram_sync)(void); 167 168 /* Exception handlers */ 169 int (*system_reset_exception)(struct pt_regs *regs); 170 int (*machine_check_exception)(struct pt_regs *regs); 171 172 /* Motherboard/chipset features. This is a kind of general purpose 173 * hook used to control some machine specific features (like reset 174 * lines, chip power control, etc...). 175 */ 176 long (*feature_call)(unsigned int feature, ...); 177 178 /* Get legacy PCI/IDE interrupt mapping */ 179 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 180 181 /* Get access protection for /dev/mem */ 182 pgprot_t (*phys_mem_access_prot)(struct file *file, 183 unsigned long pfn, 184 unsigned long size, 185 pgprot_t vma_prot); 186 187 /* Idle loop for this platform, leave empty for default idle loop */ 188 void (*idle_loop)(void); 189 190 /* 191 * Function for waiting for work with reduced power in idle loop; 192 * called with interrupts disabled. 193 */ 194 void (*power_save)(void); 195 196 /* Function to enable performance monitor counters for this 197 platform, called once per cpu. */ 198 void (*enable_pmcs)(void); 199 200 /* Set DABR for this platform, leave empty for default implemenation */ 201 int (*set_dabr)(unsigned long dabr); 202 203 #ifdef CONFIG_PPC32 /* XXX for now */ 204 /* A general init function, called by ppc_init in init/main.c. 205 May be NULL. */ 206 void (*init)(void); 207 208 void (*kgdb_map_scc)(void); 209 210 /* 211 * optional PCI "hooks" 212 */ 213 /* Called at then very end of pcibios_init() */ 214 void (*pcibios_after_init)(void); 215 216 #endif /* CONFIG_PPC32 */ 217 218 /* Called in indirect_* to avoid touching devices */ 219 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); 220 221 /* Called after PPC generic resource fixup to perform 222 machine specific fixups */ 223 void (*pcibios_fixup_resources)(struct pci_dev *); 224 225 /* Called for each PCI bus in the system when it's probed */ 226 void (*pcibios_fixup_bus)(struct pci_bus *); 227 228 /* Called when pci_enable_device() is called. Returns 0 to 229 * allow assignment/enabling of the device. */ 230 int (*pcibios_enable_device_hook)(struct pci_dev *); 231 232 /* Called to shutdown machine specific hardware not already controlled 233 * by other drivers. 234 */ 235 void (*machine_shutdown)(void); 236 237 #ifdef CONFIG_KEXEC 238 /* Called to do the minimal shutdown needed to run a kexec'd kernel 239 * to run successfully. 240 * XXX Should we move this one out of kexec scope? 241 */ 242 void (*machine_crash_shutdown)(struct pt_regs *regs); 243 244 /* Called to do what every setup is needed on image and the 245 * reboot code buffer. Returns 0 on success. 246 * Provide your own (maybe dummy) implementation if your platform 247 * claims to support kexec. 248 */ 249 int (*machine_kexec_prepare)(struct kimage *image); 250 251 /* Called to handle any machine specific cleanup on image */ 252 void (*machine_kexec_cleanup)(struct kimage *image); 253 254 /* Called to perform the _real_ kexec. 255 * Do NOT allocate memory or fail here. We are past the point of 256 * no return. 257 */ 258 void (*machine_kexec)(struct kimage *image); 259 #endif /* CONFIG_KEXEC */ 260 261 #ifdef CONFIG_SUSPEND 262 /* These are called to disable and enable, respectively, IRQs when 263 * entering a suspend state. If NULL, then the generic versions 264 * will be called. The generic versions disable/enable the 265 * decrementer along with interrupts. 266 */ 267 void (*suspend_disable_irqs)(void); 268 void (*suspend_enable_irqs)(void); 269 #endif 270 int (*suspend_disable_cpu)(void); 271 272 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE 273 ssize_t (*cpu_probe)(const char *, size_t); 274 ssize_t (*cpu_release)(const char *, size_t); 275 #endif 276 }; 277 278 extern void e500_idle(void); 279 extern void power4_idle(void); 280 extern void power4_cpu_offline_powersave(void); 281 extern void ppc6xx_idle(void); 282 extern void book3e_idle(void); 283 284 /* 285 * ppc_md contains a copy of the machine description structure for the 286 * current platform. machine_id contains the initial address where the 287 * description was found during boot. 288 */ 289 extern struct machdep_calls ppc_md; 290 extern struct machdep_calls *machine_id; 291 292 #define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 293 294 #define define_machine(name) \ 295 extern struct machdep_calls mach_##name; \ 296 EXPORT_SYMBOL(mach_##name); \ 297 struct machdep_calls mach_##name __machine_desc = 298 299 #define machine_is(name) \ 300 ({ \ 301 extern struct machdep_calls mach_##name \ 302 __attribute__((weak)); \ 303 machine_id == &mach_##name; \ 304 }) 305 306 extern void probe_machine(void); 307 308 extern char cmd_line[COMMAND_LINE_SIZE]; 309 310 #ifdef CONFIG_PPC_PMAC 311 /* 312 * Power macintoshes have either a CUDA, PMU or SMU controlling 313 * system reset, power, NVRAM, RTC. 314 */ 315 typedef enum sys_ctrler_kind { 316 SYS_CTRLER_UNKNOWN = 0, 317 SYS_CTRLER_CUDA = 1, 318 SYS_CTRLER_PMU = 2, 319 SYS_CTRLER_SMU = 3, 320 } sys_ctrler_t; 321 extern sys_ctrler_t sys_ctrler; 322 323 #endif /* CONFIG_PPC_PMAC */ 324 325 #ifdef CONFIG_SMP 326 /* Poor default implementations */ 327 extern void __devinit smp_generic_give_timebase(void); 328 extern void __devinit smp_generic_take_timebase(void); 329 #endif /* CONFIG_SMP */ 330 331 332 /* Functions to produce codes on the leds. 333 * The SRC code should be unique for the message category and should 334 * be limited to the lower 24 bits (the upper 8 are set by these funcs), 335 * and (for boot & dump) should be sorted numerically in the order 336 * the events occur. 337 */ 338 /* Print a boot progress message. */ 339 void ppc64_boot_msg(unsigned int src, const char *msg); 340 341 static inline void log_error(char *buf, unsigned int err_type, int fatal) 342 { 343 if (ppc_md.log_error) 344 ppc_md.log_error(buf, err_type, fatal); 345 } 346 347 #define __define_machine_initcall(mach,level,fn,id) \ 348 static int __init __machine_initcall_##mach##_##fn(void) { \ 349 if (machine_is(mach)) return fn(); \ 350 return 0; \ 351 } \ 352 __define_initcall(level,__machine_initcall_##mach##_##fn,id); 353 354 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1) 355 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s) 356 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2) 357 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s) 358 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3) 359 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s) 360 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4) 361 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s) 362 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5) 363 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s) 364 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs) 365 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6) 366 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s) 367 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7) 368 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s) 369 370 #endif /* __KERNEL__ */ 371 #endif /* _ASM_POWERPC_MACHDEP_H */ 372