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