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)(struct mm_struct *mm, 61 unsigned char *hpte_slot_array, 62 unsigned long addr, int psize); 63 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 #endif /* CONFIG_PPC64 */ 102 103 void (*pci_dma_dev_setup)(struct pci_dev *dev); 104 void (*pci_dma_bus_setup)(struct pci_bus *bus); 105 106 /* Platform set_dma_mask and dma_get_required_mask overrides */ 107 int (*dma_set_mask)(struct device *dev, u64 dma_mask); 108 u64 (*dma_get_required_mask)(struct device *dev); 109 110 int (*probe)(void); 111 void (*setup_arch)(void); /* Optional, may be NULL */ 112 void (*init_early)(void); 113 /* Optional, may be NULL. */ 114 void (*show_cpuinfo)(struct seq_file *m); 115 void (*show_percpuinfo)(struct seq_file *m, int i); 116 117 void (*init_IRQ)(void); 118 119 /* Return an irq, or NO_IRQ to indicate there are none pending. */ 120 unsigned int (*get_irq)(void); 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 int (*pcibios_root_bridge_prepare)(struct pci_host_bridge 128 *bridge); 129 130 /* To setup PHBs when using automatic OF platform driver for PCI */ 131 int (*pci_setup_phb)(struct pci_controller *host); 132 133 #ifdef CONFIG_PCI_MSI 134 int (*msi_check_device)(struct pci_dev* dev, 135 int nvec, int type); 136 int (*setup_msi_irqs)(struct pci_dev *dev, 137 int nvec, int type); 138 void (*teardown_msi_irqs)(struct pci_dev *dev); 139 #endif 140 141 void (*restart)(char *cmd); 142 void (*power_off)(void); 143 void (*halt)(void); 144 void (*panic)(char *str); 145 void (*cpu_die)(void); 146 147 long (*time_init)(void); /* Optional, may be NULL */ 148 149 int (*set_rtc_time)(struct rtc_time *); 150 void (*get_rtc_time)(struct rtc_time *); 151 unsigned long (*get_boot_time)(void); 152 unsigned char (*rtc_read_val)(int addr); 153 void (*rtc_write_val)(int addr, unsigned char val); 154 155 void (*calibrate_decr)(void); 156 157 void (*progress)(char *, unsigned short); 158 159 /* Interface for platform error logging */ 160 void (*log_error)(char *buf, unsigned int err_type, int fatal); 161 162 unsigned char (*nvram_read_val)(int addr); 163 void (*nvram_write_val)(int addr, unsigned char val); 164 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 165 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 166 ssize_t (*nvram_size)(void); 167 void (*nvram_sync)(void); 168 169 /* Exception handlers */ 170 int (*system_reset_exception)(struct pt_regs *regs); 171 int (*machine_check_exception)(struct pt_regs *regs); 172 173 /* Called during machine check exception to retrive fixup address. */ 174 bool (*mce_check_early_recovery)(struct pt_regs *regs); 175 176 /* Motherboard/chipset features. This is a kind of general purpose 177 * hook used to control some machine specific features (like reset 178 * lines, chip power control, etc...). 179 */ 180 long (*feature_call)(unsigned int feature, ...); 181 182 /* Get legacy PCI/IDE interrupt mapping */ 183 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 184 185 /* Get access protection for /dev/mem */ 186 pgprot_t (*phys_mem_access_prot)(struct file *file, 187 unsigned long pfn, 188 unsigned long size, 189 pgprot_t vma_prot); 190 191 /* 192 * Function for waiting for work with reduced power in idle loop; 193 * called with interrupts disabled. 194 */ 195 void (*power_save)(void); 196 197 /* Function to enable performance monitor counters for this 198 platform, called once per cpu. */ 199 void (*enable_pmcs)(void); 200 201 /* Set DABR for this platform, leave empty for default implemenation */ 202 int (*set_dabr)(unsigned long dabr, 203 unsigned long dabrx); 204 205 /* Set DAWR for this platform, leave empty for default implemenation */ 206 int (*set_dawr)(unsigned long dawr, 207 unsigned long dawrx); 208 209 #ifdef CONFIG_PPC32 /* XXX for now */ 210 /* A general init function, called by ppc_init in init/main.c. 211 May be NULL. */ 212 void (*init)(void); 213 214 void (*kgdb_map_scc)(void); 215 216 /* 217 * optional PCI "hooks" 218 */ 219 /* Called at then very end of pcibios_init() */ 220 void (*pcibios_after_init)(void); 221 222 #endif /* CONFIG_PPC32 */ 223 224 /* Called in indirect_* to avoid touching devices */ 225 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); 226 227 /* Called after PPC generic resource fixup to perform 228 machine specific fixups */ 229 void (*pcibios_fixup_resources)(struct pci_dev *); 230 231 /* Called for each PCI bus in the system when it's probed */ 232 void (*pcibios_fixup_bus)(struct pci_bus *); 233 234 /* Called when pci_enable_device() is called. Returns 0 to 235 * allow assignment/enabling of the device. */ 236 int (*pcibios_enable_device_hook)(struct pci_dev *); 237 238 /* Called after scan and before resource survey */ 239 void (*pcibios_fixup_phb)(struct pci_controller *hose); 240 241 /* Called during PCI resource reassignment */ 242 resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned long type); 243 244 /* Called to shutdown machine specific hardware not already controlled 245 * by other drivers. 246 */ 247 void (*machine_shutdown)(void); 248 249 #ifdef CONFIG_KEXEC 250 void (*kexec_cpu_down)(int crash_shutdown, int secondary); 251 252 /* Called to do what every setup is needed on image and the 253 * reboot code buffer. Returns 0 on success. 254 * Provide your own (maybe dummy) implementation if your platform 255 * claims to support kexec. 256 */ 257 int (*machine_kexec_prepare)(struct kimage *image); 258 259 /* Called to perform the _real_ kexec. 260 * Do NOT allocate memory or fail here. We are past the point of 261 * no return. 262 */ 263 void (*machine_kexec)(struct kimage *image); 264 #endif /* CONFIG_KEXEC */ 265 266 #ifdef CONFIG_SUSPEND 267 /* These are called to disable and enable, respectively, IRQs when 268 * entering a suspend state. If NULL, then the generic versions 269 * will be called. The generic versions disable/enable the 270 * decrementer along with interrupts. 271 */ 272 void (*suspend_disable_irqs)(void); 273 void (*suspend_enable_irqs)(void); 274 #endif 275 int (*suspend_disable_cpu)(void); 276 277 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE 278 ssize_t (*cpu_probe)(const char *, size_t); 279 ssize_t (*cpu_release)(const char *, size_t); 280 #endif 281 282 #ifdef CONFIG_ARCH_RANDOM 283 int (*get_random_long)(unsigned long *v); 284 #endif 285 286 #ifdef CONFIG_MEMORY_HOTREMOVE 287 int (*remove_memory)(u64, u64); 288 #endif 289 }; 290 291 extern void e500_idle(void); 292 extern void power4_idle(void); 293 extern void power7_idle(void); 294 extern void ppc6xx_idle(void); 295 extern void book3e_idle(void); 296 297 /* 298 * ppc_md contains a copy of the machine description structure for the 299 * current platform. machine_id contains the initial address where the 300 * description was found during boot. 301 */ 302 extern struct machdep_calls ppc_md; 303 extern struct machdep_calls *machine_id; 304 305 #define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 306 307 #define define_machine(name) \ 308 extern struct machdep_calls mach_##name; \ 309 EXPORT_SYMBOL(mach_##name); \ 310 struct machdep_calls mach_##name __machine_desc = 311 312 #define machine_is(name) \ 313 ({ \ 314 extern struct machdep_calls mach_##name \ 315 __attribute__((weak)); \ 316 machine_id == &mach_##name; \ 317 }) 318 319 extern void probe_machine(void); 320 321 extern char cmd_line[COMMAND_LINE_SIZE]; 322 323 #ifdef CONFIG_PPC_PMAC 324 /* 325 * Power macintoshes have either a CUDA, PMU or SMU controlling 326 * system reset, power, NVRAM, RTC. 327 */ 328 typedef enum sys_ctrler_kind { 329 SYS_CTRLER_UNKNOWN = 0, 330 SYS_CTRLER_CUDA = 1, 331 SYS_CTRLER_PMU = 2, 332 SYS_CTRLER_SMU = 3, 333 } sys_ctrler_t; 334 extern sys_ctrler_t sys_ctrler; 335 336 #endif /* CONFIG_PPC_PMAC */ 337 338 339 /* Functions to produce codes on the leds. 340 * The SRC code should be unique for the message category and should 341 * be limited to the lower 24 bits (the upper 8 are set by these funcs), 342 * and (for boot & dump) should be sorted numerically in the order 343 * the events occur. 344 */ 345 /* Print a boot progress message. */ 346 void ppc64_boot_msg(unsigned int src, const char *msg); 347 348 static inline void log_error(char *buf, unsigned int err_type, int fatal) 349 { 350 if (ppc_md.log_error) 351 ppc_md.log_error(buf, err_type, fatal); 352 } 353 354 #define __define_machine_initcall(mach, fn, id) \ 355 static int __init __machine_initcall_##mach##_##fn(void) { \ 356 if (machine_is(mach)) return fn(); \ 357 return 0; \ 358 } \ 359 __define_initcall(__machine_initcall_##mach##_##fn, id); 360 361 #define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1) 362 #define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s) 363 #define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2) 364 #define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s) 365 #define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3) 366 #define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s) 367 #define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4) 368 #define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s) 369 #define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5) 370 #define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s) 371 #define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs) 372 #define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6) 373 #define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s) 374 #define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7) 375 #define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s) 376 377 #endif /* __KERNEL__ */ 378 #endif /* _ASM_POWERPC_MACHDEP_H */ 379