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); 119 120 /* PCI stuff */ 121 /* Called after scanning the bus, before allocating resources */ 122 void (*pcibios_fixup)(void); 123 int (*pci_probe_mode)(struct pci_bus *); 124 void (*pci_irq_fixup)(struct pci_dev *dev); 125 126 /* To setup PHBs when using automatic OF platform driver for PCI */ 127 int (*pci_setup_phb)(struct pci_controller *host); 128 129 #ifdef CONFIG_PCI_MSI 130 int (*msi_check_device)(struct pci_dev* dev, 131 int nvec, int type); 132 int (*setup_msi_irqs)(struct pci_dev *dev, 133 int nvec, int type); 134 void (*teardown_msi_irqs)(struct pci_dev *dev); 135 #endif 136 137 void (*restart)(char *cmd); 138 void (*power_off)(void); 139 void (*halt)(void); 140 void (*panic)(char *str); 141 void (*cpu_die)(void); 142 143 long (*time_init)(void); /* Optional, may be NULL */ 144 145 int (*set_rtc_time)(struct rtc_time *); 146 void (*get_rtc_time)(struct rtc_time *); 147 unsigned long (*get_boot_time)(void); 148 unsigned char (*rtc_read_val)(int addr); 149 void (*rtc_write_val)(int addr, unsigned char val); 150 151 void (*calibrate_decr)(void); 152 153 void (*progress)(char *, unsigned short); 154 155 /* Interface for platform error logging */ 156 void (*log_error)(char *buf, unsigned int err_type, int fatal); 157 158 unsigned char (*nvram_read_val)(int addr); 159 void (*nvram_write_val)(int addr, unsigned char val); 160 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 161 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 162 ssize_t (*nvram_size)(void); 163 void (*nvram_sync)(void); 164 165 /* Exception handlers */ 166 int (*system_reset_exception)(struct pt_regs *regs); 167 int (*machine_check_exception)(struct pt_regs *regs); 168 169 /* Motherboard/chipset features. This is a kind of general purpose 170 * hook used to control some machine specific features (like reset 171 * lines, chip power control, etc...). 172 */ 173 long (*feature_call)(unsigned int feature, ...); 174 175 /* Get legacy PCI/IDE interrupt mapping */ 176 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 177 178 /* Get access protection for /dev/mem */ 179 pgprot_t (*phys_mem_access_prot)(struct file *file, 180 unsigned long pfn, 181 unsigned long size, 182 pgprot_t vma_prot); 183 184 /* Idle loop for this platform, leave empty for default idle loop */ 185 void (*idle_loop)(void); 186 187 /* 188 * Function for waiting for work with reduced power in idle loop; 189 * called with interrupts disabled. 190 */ 191 void (*power_save)(void); 192 193 /* Function to enable performance monitor counters for this 194 platform, called once per cpu. */ 195 void (*enable_pmcs)(void); 196 197 /* Set DABR for this platform, leave empty for default implemenation */ 198 int (*set_dabr)(unsigned long dabr); 199 200 #ifdef CONFIG_PPC32 /* XXX for now */ 201 /* A general init function, called by ppc_init in init/main.c. 202 May be NULL. */ 203 void (*init)(void); 204 205 void (*kgdb_map_scc)(void); 206 207 /* 208 * optional PCI "hooks" 209 */ 210 /* Called at then very end of pcibios_init() */ 211 void (*pcibios_after_init)(void); 212 213 #endif /* CONFIG_PPC32 */ 214 215 /* Called in indirect_* to avoid touching devices */ 216 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); 217 218 /* Called after PPC generic resource fixup to perform 219 machine specific fixups */ 220 void (*pcibios_fixup_resources)(struct pci_dev *); 221 222 /* Called for each PCI bus in the system when it's probed */ 223 void (*pcibios_fixup_bus)(struct pci_bus *); 224 225 /* Called when pci_enable_device() is called. Returns 0 to 226 * allow assignment/enabling of the device. */ 227 int (*pcibios_enable_device_hook)(struct pci_dev *); 228 229 /* Called to shutdown machine specific hardware not already controlled 230 * by other drivers. 231 */ 232 void (*machine_shutdown)(void); 233 234 #ifdef CONFIG_KEXEC 235 void (*kexec_cpu_down)(int crash_shutdown, int secondary); 236 237 /* Called to do what every setup is needed on image and the 238 * reboot code buffer. Returns 0 on success. 239 * Provide your own (maybe dummy) implementation if your platform 240 * claims to support kexec. 241 */ 242 int (*machine_kexec_prepare)(struct kimage *image); 243 244 /* Called to perform the _real_ kexec. 245 * Do NOT allocate memory or fail here. We are past the point of 246 * no return. 247 */ 248 void (*machine_kexec)(struct kimage *image); 249 #endif /* CONFIG_KEXEC */ 250 251 #ifdef CONFIG_SUSPEND 252 /* These are called to disable and enable, respectively, IRQs when 253 * entering a suspend state. If NULL, then the generic versions 254 * will be called. The generic versions disable/enable the 255 * decrementer along with interrupts. 256 */ 257 void (*suspend_disable_irqs)(void); 258 void (*suspend_enable_irqs)(void); 259 #endif 260 int (*suspend_disable_cpu)(void); 261 262 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE 263 ssize_t (*cpu_probe)(const char *, size_t); 264 ssize_t (*cpu_release)(const char *, size_t); 265 #endif 266 }; 267 268 extern void e500_idle(void); 269 extern void power4_idle(void); 270 extern void power4_cpu_offline_powersave(void); 271 extern void ppc6xx_idle(void); 272 extern void book3e_idle(void); 273 274 /* 275 * ppc_md contains a copy of the machine description structure for the 276 * current platform. machine_id contains the initial address where the 277 * description was found during boot. 278 */ 279 extern struct machdep_calls ppc_md; 280 extern struct machdep_calls *machine_id; 281 282 #define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 283 284 #define define_machine(name) \ 285 extern struct machdep_calls mach_##name; \ 286 EXPORT_SYMBOL(mach_##name); \ 287 struct machdep_calls mach_##name __machine_desc = 288 289 #define machine_is(name) \ 290 ({ \ 291 extern struct machdep_calls mach_##name \ 292 __attribute__((weak)); \ 293 machine_id == &mach_##name; \ 294 }) 295 296 extern void probe_machine(void); 297 298 extern char cmd_line[COMMAND_LINE_SIZE]; 299 300 #ifdef CONFIG_PPC_PMAC 301 /* 302 * Power macintoshes have either a CUDA, PMU or SMU controlling 303 * system reset, power, NVRAM, RTC. 304 */ 305 typedef enum sys_ctrler_kind { 306 SYS_CTRLER_UNKNOWN = 0, 307 SYS_CTRLER_CUDA = 1, 308 SYS_CTRLER_PMU = 2, 309 SYS_CTRLER_SMU = 3, 310 } sys_ctrler_t; 311 extern sys_ctrler_t sys_ctrler; 312 313 #endif /* CONFIG_PPC_PMAC */ 314 315 #ifdef CONFIG_SMP 316 /* Poor default implementations */ 317 extern void __devinit smp_generic_give_timebase(void); 318 extern void __devinit smp_generic_take_timebase(void); 319 #endif /* CONFIG_SMP */ 320 321 322 /* Functions to produce codes on the leds. 323 * The SRC code should be unique for the message category and should 324 * be limited to the lower 24 bits (the upper 8 are set by these funcs), 325 * and (for boot & dump) should be sorted numerically in the order 326 * the events occur. 327 */ 328 /* Print a boot progress message. */ 329 void ppc64_boot_msg(unsigned int src, const char *msg); 330 331 static inline void log_error(char *buf, unsigned int err_type, int fatal) 332 { 333 if (ppc_md.log_error) 334 ppc_md.log_error(buf, err_type, fatal); 335 } 336 337 #define __define_machine_initcall(mach,level,fn,id) \ 338 static int __init __machine_initcall_##mach##_##fn(void) { \ 339 if (machine_is(mach)) return fn(); \ 340 return 0; \ 341 } \ 342 __define_initcall(level,__machine_initcall_##mach##_##fn,id); 343 344 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1) 345 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s) 346 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2) 347 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s) 348 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3) 349 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s) 350 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4) 351 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s) 352 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5) 353 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s) 354 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs) 355 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6) 356 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s) 357 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7) 358 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s) 359 360 #endif /* __KERNEL__ */ 361 #endif /* _ASM_POWERPC_MACHDEP_H */ 362