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 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, 82 unsigned long flags, void *caller); 83 void (*iounmap)(volatile void __iomem *token); 84 85 #ifdef CONFIG_PM 86 void (*iommu_save)(void); 87 void (*iommu_restore)(void); 88 #endif 89 #endif /* CONFIG_PPC64 */ 90 91 void (*pci_dma_dev_setup)(struct pci_dev *dev); 92 void (*pci_dma_bus_setup)(struct pci_bus *bus); 93 94 /* Platform set_dma_mask and dma_get_required_mask overrides */ 95 int (*dma_set_mask)(struct device *dev, u64 dma_mask); 96 u64 (*dma_get_required_mask)(struct device *dev); 97 98 int (*probe)(void); 99 void (*setup_arch)(void); /* Optional, may be NULL */ 100 void (*init_early)(void); 101 /* Optional, may be NULL. */ 102 void (*show_cpuinfo)(struct seq_file *m); 103 void (*show_percpuinfo)(struct seq_file *m, int i); 104 105 void (*init_IRQ)(void); 106 107 /* Return an irq, or NO_IRQ to indicate there are none pending. */ 108 unsigned int (*get_irq)(void); 109 110 /* PCI stuff */ 111 /* Called after scanning the bus, before allocating resources */ 112 void (*pcibios_fixup)(void); 113 int (*pci_probe_mode)(struct pci_bus *); 114 void (*pci_irq_fixup)(struct pci_dev *dev); 115 int (*pcibios_root_bridge_prepare)(struct pci_host_bridge 116 *bridge); 117 118 /* To setup PHBs when using automatic OF platform driver for PCI */ 119 int (*pci_setup_phb)(struct pci_controller *host); 120 121 #ifdef CONFIG_PCI_MSI 122 int (*msi_check_device)(struct pci_dev* dev, 123 int nvec, int type); 124 int (*setup_msi_irqs)(struct pci_dev *dev, 125 int nvec, int type); 126 void (*teardown_msi_irqs)(struct pci_dev *dev); 127 #endif 128 129 void (*restart)(char *cmd); 130 void (*power_off)(void); 131 void (*halt)(void); 132 void (*panic)(char *str); 133 void (*cpu_die)(void); 134 135 long (*time_init)(void); /* Optional, may be NULL */ 136 137 int (*set_rtc_time)(struct rtc_time *); 138 void (*get_rtc_time)(struct rtc_time *); 139 unsigned long (*get_boot_time)(void); 140 unsigned char (*rtc_read_val)(int addr); 141 void (*rtc_write_val)(int addr, unsigned char val); 142 143 void (*calibrate_decr)(void); 144 145 void (*progress)(char *, unsigned short); 146 147 /* Interface for platform error logging */ 148 void (*log_error)(char *buf, unsigned int err_type, int fatal); 149 150 unsigned char (*nvram_read_val)(int addr); 151 void (*nvram_write_val)(int addr, unsigned char val); 152 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 153 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 154 ssize_t (*nvram_size)(void); 155 void (*nvram_sync)(void); 156 157 /* Exception handlers */ 158 int (*system_reset_exception)(struct pt_regs *regs); 159 int (*machine_check_exception)(struct pt_regs *regs); 160 161 /* Motherboard/chipset features. This is a kind of general purpose 162 * hook used to control some machine specific features (like reset 163 * lines, chip power control, etc...). 164 */ 165 long (*feature_call)(unsigned int feature, ...); 166 167 /* Get legacy PCI/IDE interrupt mapping */ 168 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 169 170 /* Get access protection for /dev/mem */ 171 pgprot_t (*phys_mem_access_prot)(struct file *file, 172 unsigned long pfn, 173 unsigned long size, 174 pgprot_t vma_prot); 175 176 /* 177 * Function for waiting for work with reduced power in idle loop; 178 * called with interrupts disabled. 179 */ 180 void (*power_save)(void); 181 182 /* Function to enable performance monitor counters for this 183 platform, called once per cpu. */ 184 void (*enable_pmcs)(void); 185 186 /* Set DABR for this platform, leave empty for default implemenation */ 187 int (*set_dabr)(unsigned long dabr, 188 unsigned long dabrx); 189 190 /* Set DAWR for this platform, leave empty for default implemenation */ 191 int (*set_dawr)(unsigned long dawr, 192 unsigned long dawrx); 193 194 #ifdef CONFIG_PPC32 /* XXX for now */ 195 /* A general init function, called by ppc_init in init/main.c. 196 May be NULL. */ 197 void (*init)(void); 198 199 void (*kgdb_map_scc)(void); 200 201 /* 202 * optional PCI "hooks" 203 */ 204 /* Called at then very end of pcibios_init() */ 205 void (*pcibios_after_init)(void); 206 207 #endif /* CONFIG_PPC32 */ 208 209 /* Called in indirect_* to avoid touching devices */ 210 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); 211 212 /* Called after PPC generic resource fixup to perform 213 machine specific fixups */ 214 void (*pcibios_fixup_resources)(struct pci_dev *); 215 216 /* Called for each PCI bus in the system when it's probed */ 217 void (*pcibios_fixup_bus)(struct pci_bus *); 218 219 /* Called when pci_enable_device() is called. Returns 0 to 220 * allow assignment/enabling of the device. */ 221 int (*pcibios_enable_device_hook)(struct pci_dev *); 222 223 /* Called after scan and before resource survey */ 224 void (*pcibios_fixup_phb)(struct pci_controller *hose); 225 226 /* Called during PCI resource reassignment */ 227 resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned long type); 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 power7_idle(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 */ 314 315 316 /* Functions to produce codes on the leds. 317 * The SRC code should be unique for the message category and should 318 * be limited to the lower 24 bits (the upper 8 are set by these funcs), 319 * and (for boot & dump) should be sorted numerically in the order 320 * the events occur. 321 */ 322 /* Print a boot progress message. */ 323 void ppc64_boot_msg(unsigned int src, const char *msg); 324 325 static inline void log_error(char *buf, unsigned int err_type, int fatal) 326 { 327 if (ppc_md.log_error) 328 ppc_md.log_error(buf, err_type, fatal); 329 } 330 331 #define __define_machine_initcall(mach, fn, id) \ 332 static int __init __machine_initcall_##mach##_##fn(void) { \ 333 if (machine_is(mach)) return fn(); \ 334 return 0; \ 335 } \ 336 __define_initcall(__machine_initcall_##mach##_##fn, id); 337 338 #define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1) 339 #define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s) 340 #define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2) 341 #define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s) 342 #define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3) 343 #define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s) 344 #define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4) 345 #define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s) 346 #define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5) 347 #define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s) 348 #define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs) 349 #define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6) 350 #define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s) 351 #define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7) 352 #define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s) 353 354 #endif /* __KERNEL__ */ 355 #endif /* _ASM_POWERPC_MACHDEP_H */ 356