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 #include <linux/export.h> 16 17 #include <asm/setup.h> 18 19 /* We export this macro for external modules like Alsa to know if 20 * ppc_md.feature_call is implemented or not 21 */ 22 #define CONFIG_PPC_HAS_FEATURE_CALLS 23 24 struct pt_regs; 25 struct pci_bus; 26 struct device_node; 27 struct iommu_table; 28 struct rtc_time; 29 struct file; 30 struct pci_controller; 31 struct kimage; 32 struct pci_host_bridge; 33 34 struct machdep_calls { 35 char *name; 36 #ifdef CONFIG_PPC64 37 void (*hpte_invalidate)(unsigned long slot, 38 unsigned long vpn, 39 int bpsize, int apsize, 40 int ssize, int local); 41 long (*hpte_updatepp)(unsigned long slot, 42 unsigned long newpp, 43 unsigned long vpn, 44 int bpsize, int apsize, 45 int ssize, int local); 46 void (*hpte_updateboltedpp)(unsigned long newpp, 47 unsigned long ea, 48 int psize, int ssize); 49 long (*hpte_insert)(unsigned long hpte_group, 50 unsigned long vpn, 51 unsigned long prpn, 52 unsigned long rflags, 53 unsigned long vflags, 54 int psize, int apsize, 55 int ssize); 56 long (*hpte_remove)(unsigned long hpte_group); 57 void (*hpte_removebolted)(unsigned long ea, 58 int psize, int ssize); 59 void (*flush_hash_range)(unsigned long number, int local); 60 void (*hugepage_invalidate)(unsigned long vsid, 61 unsigned long addr, 62 unsigned char *hpte_slot_array, 63 int psize, int ssize); 64 /* special for kexec, to be called in real mode, linear mapping is 65 * destroyed as well */ 66 void (*hpte_clear_all)(void); 67 68 int (*tce_build)(struct iommu_table *tbl, 69 long index, 70 long npages, 71 unsigned long uaddr, 72 enum dma_data_direction direction, 73 struct dma_attrs *attrs); 74 void (*tce_free)(struct iommu_table *tbl, 75 long index, 76 long npages); 77 unsigned long (*tce_get)(struct iommu_table *tbl, 78 long index); 79 void (*tce_flush)(struct iommu_table *tbl); 80 81 /* _rm versions are for real mode use only */ 82 int (*tce_build_rm)(struct iommu_table *tbl, 83 long index, 84 long npages, 85 unsigned long uaddr, 86 enum dma_data_direction direction, 87 struct dma_attrs *attrs); 88 void (*tce_free_rm)(struct iommu_table *tbl, 89 long index, 90 long npages); 91 void (*tce_flush_rm)(struct iommu_table *tbl); 92 93 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, 94 unsigned long flags, void *caller); 95 void (*iounmap)(volatile void __iomem *token); 96 97 #ifdef CONFIG_PM 98 void (*iommu_save)(void); 99 void (*iommu_restore)(void); 100 #endif 101 #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE 102 unsigned long (*memory_block_size)(void); 103 #endif 104 #endif /* CONFIG_PPC64 */ 105 106 void (*pci_dma_dev_setup)(struct pci_dev *dev); 107 void (*pci_dma_bus_setup)(struct pci_bus *bus); 108 109 /* Platform set_dma_mask and dma_get_required_mask overrides */ 110 int (*dma_set_mask)(struct device *dev, u64 dma_mask); 111 u64 (*dma_get_required_mask)(struct device *dev); 112 113 int (*probe)(void); 114 void (*setup_arch)(void); /* Optional, may be NULL */ 115 void (*init_early)(void); 116 /* Optional, may be NULL. */ 117 void (*show_cpuinfo)(struct seq_file *m); 118 void (*show_percpuinfo)(struct seq_file *m, int i); 119 /* Returns the current operating frequency of "cpu" in Hz */ 120 unsigned long (*get_proc_freq)(unsigned int cpu); 121 122 void (*init_IRQ)(void); 123 124 /* Return an irq, or NO_IRQ to indicate there are none pending. */ 125 unsigned int (*get_irq)(void); 126 127 /* PCI stuff */ 128 /* Called after scanning the bus, before allocating resources */ 129 void (*pcibios_fixup)(void); 130 int (*pci_probe_mode)(struct pci_bus *); 131 void (*pci_irq_fixup)(struct pci_dev *dev); 132 int (*pcibios_root_bridge_prepare)(struct pci_host_bridge 133 *bridge); 134 135 /* To setup PHBs when using automatic OF platform driver for PCI */ 136 int (*pci_setup_phb)(struct pci_controller *host); 137 138 #ifdef CONFIG_PCI_MSI 139 int (*setup_msi_irqs)(struct pci_dev *dev, 140 int nvec, int type); 141 void (*teardown_msi_irqs)(struct pci_dev *dev); 142 #endif 143 144 void (*restart)(char *cmd); 145 void (*power_off)(void); 146 void (*halt)(void); 147 void (*panic)(char *str); 148 void (*cpu_die)(void); 149 150 long (*time_init)(void); /* Optional, may be NULL */ 151 152 int (*set_rtc_time)(struct rtc_time *); 153 void (*get_rtc_time)(struct rtc_time *); 154 unsigned long (*get_boot_time)(void); 155 unsigned char (*rtc_read_val)(int addr); 156 void (*rtc_write_val)(int addr, unsigned char val); 157 158 void (*calibrate_decr)(void); 159 160 void (*progress)(char *, unsigned short); 161 162 /* Interface for platform error logging */ 163 void (*log_error)(char *buf, unsigned int err_type, int fatal); 164 165 unsigned char (*nvram_read_val)(int addr); 166 void (*nvram_write_val)(int addr, unsigned char val); 167 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 168 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 169 ssize_t (*nvram_size)(void); 170 void (*nvram_sync)(void); 171 172 /* Exception handlers */ 173 int (*system_reset_exception)(struct pt_regs *regs); 174 int (*machine_check_exception)(struct pt_regs *regs); 175 int (*handle_hmi_exception)(struct pt_regs *regs); 176 177 /* Early exception handlers called in realmode */ 178 int (*hmi_exception_early)(struct pt_regs *regs); 179 180 /* Called during machine check exception to retrive fixup address. */ 181 bool (*mce_check_early_recovery)(struct pt_regs *regs); 182 183 /* Motherboard/chipset features. This is a kind of general purpose 184 * hook used to control some machine specific features (like reset 185 * lines, chip power control, etc...). 186 */ 187 long (*feature_call)(unsigned int feature, ...); 188 189 /* Get legacy PCI/IDE interrupt mapping */ 190 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 191 192 /* Get access protection for /dev/mem */ 193 pgprot_t (*phys_mem_access_prot)(struct file *file, 194 unsigned long pfn, 195 unsigned long size, 196 pgprot_t vma_prot); 197 198 /* 199 * Function for waiting for work with reduced power in idle loop; 200 * called with interrupts disabled. 201 */ 202 void (*power_save)(void); 203 204 /* Function to enable performance monitor counters for this 205 platform, called once per cpu. */ 206 void (*enable_pmcs)(void); 207 208 /* Set DABR for this platform, leave empty for default implemenation */ 209 int (*set_dabr)(unsigned long dabr, 210 unsigned long dabrx); 211 212 /* Set DAWR for this platform, leave empty for default implemenation */ 213 int (*set_dawr)(unsigned long dawr, 214 unsigned long dawrx); 215 216 #ifdef CONFIG_PPC32 /* XXX for now */ 217 /* A general init function, called by ppc_init in init/main.c. 218 May be NULL. */ 219 void (*init)(void); 220 221 void (*kgdb_map_scc)(void); 222 223 /* 224 * optional PCI "hooks" 225 */ 226 /* Called at then very end of pcibios_init() */ 227 void (*pcibios_after_init)(void); 228 229 #endif /* CONFIG_PPC32 */ 230 231 /* Called in indirect_* to avoid touching devices */ 232 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); 233 234 /* Called after PPC generic resource fixup to perform 235 machine specific fixups */ 236 void (*pcibios_fixup_resources)(struct pci_dev *); 237 238 /* Called for each PCI bus in the system when it's probed */ 239 void (*pcibios_fixup_bus)(struct pci_bus *); 240 241 /* Called when pci_enable_device() is called. Returns 0 to 242 * allow assignment/enabling of the device. */ 243 int (*pcibios_enable_device_hook)(struct pci_dev *); 244 245 /* Called after scan and before resource survey */ 246 void (*pcibios_fixup_phb)(struct pci_controller *hose); 247 248 /* Called during PCI resource reassignment */ 249 resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned long type); 250 251 /* Reset the secondary bus of bridge */ 252 void (*pcibios_reset_secondary_bus)(struct pci_dev *dev); 253 254 /* Called to shutdown machine specific hardware not already controlled 255 * by other drivers. 256 */ 257 void (*machine_shutdown)(void); 258 259 #ifdef CONFIG_KEXEC 260 void (*kexec_cpu_down)(int crash_shutdown, int secondary); 261 262 /* Called to do what every setup is needed on image and the 263 * reboot code buffer. Returns 0 on success. 264 * Provide your own (maybe dummy) implementation if your platform 265 * claims to support kexec. 266 */ 267 int (*machine_kexec_prepare)(struct kimage *image); 268 269 /* Called to perform the _real_ kexec. 270 * Do NOT allocate memory or fail here. We are past the point of 271 * no return. 272 */ 273 void (*machine_kexec)(struct kimage *image); 274 #endif /* CONFIG_KEXEC */ 275 276 #ifdef CONFIG_SUSPEND 277 /* These are called to disable and enable, respectively, IRQs when 278 * entering a suspend state. If NULL, then the generic versions 279 * will be called. The generic versions disable/enable the 280 * decrementer along with interrupts. 281 */ 282 void (*suspend_disable_irqs)(void); 283 void (*suspend_enable_irqs)(void); 284 #endif 285 int (*suspend_disable_cpu)(void); 286 287 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE 288 ssize_t (*cpu_probe)(const char *, size_t); 289 ssize_t (*cpu_release)(const char *, size_t); 290 #endif 291 292 #ifdef CONFIG_ARCH_RANDOM 293 int (*get_random_long)(unsigned long *v); 294 #endif 295 296 #ifdef CONFIG_MEMORY_HOTREMOVE 297 int (*remove_memory)(u64, u64); 298 #endif 299 }; 300 301 extern void e500_idle(void); 302 extern void power4_idle(void); 303 extern void power7_idle(void); 304 extern void ppc6xx_idle(void); 305 extern void book3e_idle(void); 306 307 /* 308 * ppc_md contains a copy of the machine description structure for the 309 * current platform. machine_id contains the initial address where the 310 * description was found during boot. 311 */ 312 extern struct machdep_calls ppc_md; 313 extern struct machdep_calls *machine_id; 314 315 #define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 316 317 #define define_machine(name) \ 318 extern struct machdep_calls mach_##name; \ 319 EXPORT_SYMBOL(mach_##name); \ 320 struct machdep_calls mach_##name __machine_desc = 321 322 #define machine_is(name) \ 323 ({ \ 324 extern struct machdep_calls mach_##name \ 325 __attribute__((weak)); \ 326 machine_id == &mach_##name; \ 327 }) 328 329 extern void probe_machine(void); 330 331 #ifdef CONFIG_PPC_PMAC 332 /* 333 * Power macintoshes have either a CUDA, PMU or SMU controlling 334 * system reset, power, NVRAM, RTC. 335 */ 336 typedef enum sys_ctrler_kind { 337 SYS_CTRLER_UNKNOWN = 0, 338 SYS_CTRLER_CUDA = 1, 339 SYS_CTRLER_PMU = 2, 340 SYS_CTRLER_SMU = 3, 341 } sys_ctrler_t; 342 extern sys_ctrler_t sys_ctrler; 343 344 #endif /* CONFIG_PPC_PMAC */ 345 346 347 /* Functions to produce codes on the leds. 348 * The SRC code should be unique for the message category and should 349 * be limited to the lower 24 bits (the upper 8 are set by these funcs), 350 * and (for boot & dump) should be sorted numerically in the order 351 * the events occur. 352 */ 353 /* Print a boot progress message. */ 354 void ppc64_boot_msg(unsigned int src, const char *msg); 355 356 static inline void log_error(char *buf, unsigned int err_type, int fatal) 357 { 358 if (ppc_md.log_error) 359 ppc_md.log_error(buf, err_type, fatal); 360 } 361 362 #define __define_machine_initcall(mach, fn, id) \ 363 static int __init __machine_initcall_##mach##_##fn(void) { \ 364 if (machine_is(mach)) return fn(); \ 365 return 0; \ 366 } \ 367 __define_initcall(__machine_initcall_##mach##_##fn, id); 368 369 #define machine_early_initcall(mach, fn) __define_machine_initcall(mach, fn, early) 370 #define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1) 371 #define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s) 372 #define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2) 373 #define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s) 374 #define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3) 375 #define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s) 376 #define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4) 377 #define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s) 378 #define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5) 379 #define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s) 380 #define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs) 381 #define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6) 382 #define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s) 383 #define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7) 384 #define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s) 385 386 #endif /* __KERNEL__ */ 387 #endif /* _ASM_POWERPC_MACHDEP_H */ 388