machdep.h revision fa1f8ae80f8bb996594167ff4750a0b0a5a5bb5d
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 24struct pt_regs; 25struct pci_bus; 26struct device_node; 27struct iommu_table; 28struct rtc_time; 29struct file; 30struct pci_controller; 31struct kimage; 32struct pci_host_bridge; 33 34struct 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 (*msi_check_device)(struct pci_dev* dev, 140 int nvec, int type); 141 int (*setup_msi_irqs)(struct pci_dev *dev, 142 int nvec, int type); 143 void (*teardown_msi_irqs)(struct pci_dev *dev); 144#endif 145 146 void (*restart)(char *cmd); 147 void (*power_off)(void); 148 void (*halt)(void); 149 void (*panic)(char *str); 150 void (*cpu_die)(void); 151 152 long (*time_init)(void); /* Optional, may be NULL */ 153 154 int (*set_rtc_time)(struct rtc_time *); 155 void (*get_rtc_time)(struct rtc_time *); 156 unsigned long (*get_boot_time)(void); 157 unsigned char (*rtc_read_val)(int addr); 158 void (*rtc_write_val)(int addr, unsigned char val); 159 160 void (*calibrate_decr)(void); 161 162 void (*progress)(char *, unsigned short); 163 164 /* Interface for platform error logging */ 165 void (*log_error)(char *buf, unsigned int err_type, int fatal); 166 167 unsigned char (*nvram_read_val)(int addr); 168 void (*nvram_write_val)(int addr, unsigned char val); 169 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 170 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 171 ssize_t (*nvram_size)(void); 172 void (*nvram_sync)(void); 173 174 /* Exception handlers */ 175 int (*system_reset_exception)(struct pt_regs *regs); 176 int (*machine_check_exception)(struct pt_regs *regs); 177 int (*handle_hmi_exception)(struct pt_regs *regs); 178 179 /* Early exception handlers called in realmode */ 180 int (*hmi_exception_early)(struct pt_regs *regs); 181 182 /* Called during machine check exception to retrive fixup address. */ 183 bool (*mce_check_early_recovery)(struct pt_regs *regs); 184 185 /* Motherboard/chipset features. This is a kind of general purpose 186 * hook used to control some machine specific features (like reset 187 * lines, chip power control, etc...). 188 */ 189 long (*feature_call)(unsigned int feature, ...); 190 191 /* Get legacy PCI/IDE interrupt mapping */ 192 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 193 194 /* Get access protection for /dev/mem */ 195 pgprot_t (*phys_mem_access_prot)(struct file *file, 196 unsigned long pfn, 197 unsigned long size, 198 pgprot_t vma_prot); 199 200 /* 201 * Function for waiting for work with reduced power in idle loop; 202 * called with interrupts disabled. 203 */ 204 void (*power_save)(void); 205 206 /* Function to enable performance monitor counters for this 207 platform, called once per cpu. */ 208 void (*enable_pmcs)(void); 209 210 /* Set DABR for this platform, leave empty for default implemenation */ 211 int (*set_dabr)(unsigned long dabr, 212 unsigned long dabrx); 213 214 /* Set DAWR for this platform, leave empty for default implemenation */ 215 int (*set_dawr)(unsigned long dawr, 216 unsigned long dawrx); 217 218#ifdef CONFIG_PPC32 /* XXX for now */ 219 /* A general init function, called by ppc_init in init/main.c. 220 May be NULL. */ 221 void (*init)(void); 222 223 void (*kgdb_map_scc)(void); 224 225 /* 226 * optional PCI "hooks" 227 */ 228 /* Called at then very end of pcibios_init() */ 229 void (*pcibios_after_init)(void); 230 231#endif /* CONFIG_PPC32 */ 232 233 /* Called in indirect_* to avoid touching devices */ 234 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); 235 236 /* Called after PPC generic resource fixup to perform 237 machine specific fixups */ 238 void (*pcibios_fixup_resources)(struct pci_dev *); 239 240 /* Called for each PCI bus in the system when it's probed */ 241 void (*pcibios_fixup_bus)(struct pci_bus *); 242 243 /* Called when pci_enable_device() is called. Returns 0 to 244 * allow assignment/enabling of the device. */ 245 int (*pcibios_enable_device_hook)(struct pci_dev *); 246 247 /* Called after scan and before resource survey */ 248 void (*pcibios_fixup_phb)(struct pci_controller *hose); 249 250 /* Called during PCI resource reassignment */ 251 resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned long type); 252 253 /* Reset the secondary bus of bridge */ 254 void (*pcibios_reset_secondary_bus)(struct pci_dev *dev); 255 256 /* Called to shutdown machine specific hardware not already controlled 257 * by other drivers. 258 */ 259 void (*machine_shutdown)(void); 260 261#ifdef CONFIG_KEXEC 262 void (*kexec_cpu_down)(int crash_shutdown, int secondary); 263 264 /* Called to do what every setup is needed on image and the 265 * reboot code buffer. Returns 0 on success. 266 * Provide your own (maybe dummy) implementation if your platform 267 * claims to support kexec. 268 */ 269 int (*machine_kexec_prepare)(struct kimage *image); 270 271 /* Called to perform the _real_ kexec. 272 * Do NOT allocate memory or fail here. We are past the point of 273 * no return. 274 */ 275 void (*machine_kexec)(struct kimage *image); 276#endif /* CONFIG_KEXEC */ 277 278#ifdef CONFIG_SUSPEND 279 /* These are called to disable and enable, respectively, IRQs when 280 * entering a suspend state. If NULL, then the generic versions 281 * will be called. The generic versions disable/enable the 282 * decrementer along with interrupts. 283 */ 284 void (*suspend_disable_irqs)(void); 285 void (*suspend_enable_irqs)(void); 286#endif 287 int (*suspend_disable_cpu)(void); 288 289#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE 290 ssize_t (*cpu_probe)(const char *, size_t); 291 ssize_t (*cpu_release)(const char *, size_t); 292#endif 293 294#ifdef CONFIG_ARCH_RANDOM 295 int (*get_random_long)(unsigned long *v); 296#endif 297 298#ifdef CONFIG_MEMORY_HOTREMOVE 299 int (*remove_memory)(u64, u64); 300#endif 301}; 302 303extern void e500_idle(void); 304extern void power4_idle(void); 305extern void power7_idle(void); 306extern void ppc6xx_idle(void); 307extern void book3e_idle(void); 308 309/* 310 * ppc_md contains a copy of the machine description structure for the 311 * current platform. machine_id contains the initial address where the 312 * description was found during boot. 313 */ 314extern struct machdep_calls ppc_md; 315extern struct machdep_calls *machine_id; 316 317#define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 318 319#define define_machine(name) \ 320 extern struct machdep_calls mach_##name; \ 321 EXPORT_SYMBOL(mach_##name); \ 322 struct machdep_calls mach_##name __machine_desc = 323 324#define machine_is(name) \ 325 ({ \ 326 extern struct machdep_calls mach_##name \ 327 __attribute__((weak)); \ 328 machine_id == &mach_##name; \ 329 }) 330 331extern void probe_machine(void); 332 333extern char cmd_line[COMMAND_LINE_SIZE]; 334 335#ifdef CONFIG_PPC_PMAC 336/* 337 * Power macintoshes have either a CUDA, PMU or SMU controlling 338 * system reset, power, NVRAM, RTC. 339 */ 340typedef enum sys_ctrler_kind { 341 SYS_CTRLER_UNKNOWN = 0, 342 SYS_CTRLER_CUDA = 1, 343 SYS_CTRLER_PMU = 2, 344 SYS_CTRLER_SMU = 3, 345} sys_ctrler_t; 346extern sys_ctrler_t sys_ctrler; 347 348#endif /* CONFIG_PPC_PMAC */ 349 350 351/* Functions to produce codes on the leds. 352 * The SRC code should be unique for the message category and should 353 * be limited to the lower 24 bits (the upper 8 are set by these funcs), 354 * and (for boot & dump) should be sorted numerically in the order 355 * the events occur. 356 */ 357/* Print a boot progress message. */ 358void ppc64_boot_msg(unsigned int src, const char *msg); 359 360static inline void log_error(char *buf, unsigned int err_type, int fatal) 361{ 362 if (ppc_md.log_error) 363 ppc_md.log_error(buf, err_type, fatal); 364} 365 366#define __define_machine_initcall(mach, fn, id) \ 367 static int __init __machine_initcall_##mach##_##fn(void) { \ 368 if (machine_is(mach)) return fn(); \ 369 return 0; \ 370 } \ 371 __define_initcall(__machine_initcall_##mach##_##fn, id); 372 373#define machine_early_initcall(mach, fn) __define_machine_initcall(mach, fn, early) 374#define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1) 375#define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s) 376#define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2) 377#define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s) 378#define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3) 379#define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s) 380#define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4) 381#define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s) 382#define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5) 383#define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s) 384#define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs) 385#define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6) 386#define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s) 387#define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7) 388#define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s) 389 390#endif /* __KERNEL__ */ 391#endif /* _ASM_POWERPC_MACHDEP_H */ 392