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, unsigned long flags); 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, int local); 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 /* 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 /* Returns the current operating frequency of "cpu" in Hz */ 117 unsigned long (*get_proc_freq)(unsigned int cpu); 118 119 void (*init_IRQ)(void); 120 121 /* Return an irq, or NO_IRQ to indicate there are none pending. */ 122 unsigned int (*get_irq)(void); 123 124 /* PCI stuff */ 125 /* Called after allocating resources */ 126 void (*pcibios_fixup)(void); 127 void (*pci_irq_fixup)(struct pci_dev *dev); 128 int (*pcibios_root_bridge_prepare)(struct pci_host_bridge 129 *bridge); 130 131 /* To setup PHBs when using automatic OF platform driver for PCI */ 132 int (*pci_setup_phb)(struct pci_controller *host); 133 134 #ifdef CONFIG_PCI_MSI 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 (*halt)(void); 142 void (*panic)(char *str); 143 void (*cpu_die)(void); 144 145 long (*time_init)(void); /* Optional, may be NULL */ 146 147 int (*set_rtc_time)(struct rtc_time *); 148 void (*get_rtc_time)(struct rtc_time *); 149 unsigned long (*get_boot_time)(void); 150 unsigned char (*rtc_read_val)(int addr); 151 void (*rtc_write_val)(int addr, unsigned char val); 152 153 void (*calibrate_decr)(void); 154 155 void (*progress)(char *, unsigned short); 156 157 /* Interface for platform error logging */ 158 void (*log_error)(char *buf, unsigned int err_type, int fatal); 159 160 unsigned char (*nvram_read_val)(int addr); 161 void (*nvram_write_val)(int addr, unsigned char val); 162 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 163 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 164 ssize_t (*nvram_size)(void); 165 void (*nvram_sync)(void); 166 167 /* Exception handlers */ 168 int (*system_reset_exception)(struct pt_regs *regs); 169 int (*machine_check_exception)(struct pt_regs *regs); 170 int (*handle_hmi_exception)(struct pt_regs *regs); 171 172 /* Early exception handlers called in realmode */ 173 int (*hmi_exception_early)(struct pt_regs *regs); 174 175 /* Called during machine check exception to retrive fixup address. */ 176 bool (*mce_check_early_recovery)(struct pt_regs *regs); 177 178 /* Motherboard/chipset features. This is a kind of general purpose 179 * hook used to control some machine specific features (like reset 180 * lines, chip power control, etc...). 181 */ 182 long (*feature_call)(unsigned int feature, ...); 183 184 /* Get legacy PCI/IDE interrupt mapping */ 185 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 186 187 /* Get access protection for /dev/mem */ 188 pgprot_t (*phys_mem_access_prot)(struct file *file, 189 unsigned long pfn, 190 unsigned long size, 191 pgprot_t vma_prot); 192 193 /* 194 * Function for waiting for work with reduced power in idle loop; 195 * called with interrupts disabled. 196 */ 197 void (*power_save)(void); 198 199 /* Function to enable performance monitor counters for this 200 platform, called once per cpu. */ 201 void (*enable_pmcs)(void); 202 203 /* Set DABR for this platform, leave empty for default implemenation */ 204 int (*set_dabr)(unsigned long dabr, 205 unsigned long dabrx); 206 207 /* Set DAWR for this platform, leave empty for default implemenation */ 208 int (*set_dawr)(unsigned long dawr, 209 unsigned long dawrx); 210 211 #ifdef CONFIG_PPC32 /* XXX for now */ 212 /* A general init function, called by ppc_init in init/main.c. 213 May be NULL. */ 214 void (*init)(void); 215 216 void (*kgdb_map_scc)(void); 217 218 /* 219 * optional PCI "hooks" 220 */ 221 /* Called at then very end of pcibios_init() */ 222 void (*pcibios_after_init)(void); 223 224 #endif /* CONFIG_PPC32 */ 225 226 /* Called in indirect_* to avoid touching devices */ 227 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); 228 229 /* Called after PPC generic resource fixup to perform 230 machine specific fixups */ 231 void (*pcibios_fixup_resources)(struct pci_dev *); 232 233 /* Called for each PCI bus in the system when it's probed */ 234 void (*pcibios_fixup_bus)(struct pci_bus *); 235 236 /* Called after scan and before resource survey */ 237 void (*pcibios_fixup_phb)(struct pci_controller *hose); 238 239 #ifdef CONFIG_PCI_IOV 240 void (*pcibios_fixup_sriov)(struct pci_dev *pdev); 241 resource_size_t (*pcibios_iov_resource_alignment)(struct pci_dev *, int resno); 242 #endif /* CONFIG_PCI_IOV */ 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 }; 286 287 extern void e500_idle(void); 288 extern void power4_idle(void); 289 extern void power7_idle(void); 290 extern void ppc6xx_idle(void); 291 extern void book3e_idle(void); 292 293 /* 294 * ppc_md contains a copy of the machine description structure for the 295 * current platform. machine_id contains the initial address where the 296 * description was found during boot. 297 */ 298 extern struct machdep_calls ppc_md; 299 extern struct machdep_calls *machine_id; 300 301 #define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 302 303 #define define_machine(name) \ 304 extern struct machdep_calls mach_##name; \ 305 EXPORT_SYMBOL(mach_##name); \ 306 struct machdep_calls mach_##name __machine_desc = 307 308 #define machine_is(name) \ 309 ({ \ 310 extern struct machdep_calls mach_##name \ 311 __attribute__((weak)); \ 312 machine_id == &mach_##name; \ 313 }) 314 315 extern void probe_machine(void); 316 317 #ifdef CONFIG_PPC_PMAC 318 /* 319 * Power macintoshes have either a CUDA, PMU or SMU controlling 320 * system reset, power, NVRAM, RTC. 321 */ 322 typedef enum sys_ctrler_kind { 323 SYS_CTRLER_UNKNOWN = 0, 324 SYS_CTRLER_CUDA = 1, 325 SYS_CTRLER_PMU = 2, 326 SYS_CTRLER_SMU = 3, 327 } sys_ctrler_t; 328 extern sys_ctrler_t sys_ctrler; 329 330 #endif /* CONFIG_PPC_PMAC */ 331 332 static inline void log_error(char *buf, unsigned int err_type, int fatal) 333 { 334 if (ppc_md.log_error) 335 ppc_md.log_error(buf, err_type, fatal); 336 } 337 338 #define __define_machine_initcall(mach, fn, id) \ 339 static int __init __machine_initcall_##mach##_##fn(void) { \ 340 if (machine_is(mach)) return fn(); \ 341 return 0; \ 342 } \ 343 __define_initcall(__machine_initcall_##mach##_##fn, id); 344 345 #define machine_early_initcall(mach, fn) __define_machine_initcall(mach, fn, early) 346 #define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1) 347 #define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s) 348 #define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2) 349 #define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s) 350 #define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3) 351 #define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s) 352 #define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4) 353 #define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s) 354 #define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5) 355 #define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s) 356 #define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs) 357 #define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6) 358 #define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s) 359 #define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7) 360 #define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s) 361 362 #endif /* __KERNEL__ */ 363 #endif /* _ASM_POWERPC_MACHDEP_H */ 364