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 33 struct machdep_calls { 34 char *name; 35 #ifdef CONFIG_PPC64 36 void (*hpte_invalidate)(unsigned long slot, 37 unsigned long va, 38 int psize, int ssize, 39 int local); 40 long (*hpte_updatepp)(unsigned long slot, 41 unsigned long newpp, 42 unsigned long va, 43 int psize, int ssize, 44 int local); 45 void (*hpte_updateboltedpp)(unsigned long newpp, 46 unsigned long ea, 47 int psize, int ssize); 48 long (*hpte_insert)(unsigned long hpte_group, 49 unsigned long va, 50 unsigned long prpn, 51 unsigned long rflags, 52 unsigned long vflags, 53 int psize, int ssize); 54 long (*hpte_remove)(unsigned long hpte_group); 55 void (*hpte_removebolted)(unsigned long ea, 56 int psize, int ssize); 57 void (*flush_hash_range)(unsigned long number, int local); 58 59 /* special for kexec, to be called in real mode, linear mapping is 60 * destroyed as well */ 61 void (*hpte_clear_all)(void); 62 63 int (*tce_build)(struct iommu_table *tbl, 64 long index, 65 long npages, 66 unsigned long uaddr, 67 enum dma_data_direction direction, 68 struct dma_attrs *attrs); 69 void (*tce_free)(struct iommu_table *tbl, 70 long index, 71 long npages); 72 unsigned long (*tce_get)(struct iommu_table *tbl, 73 long index); 74 void (*tce_flush)(struct iommu_table *tbl); 75 76 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, 77 unsigned long flags, void *caller); 78 void (*iounmap)(volatile void __iomem *token); 79 80 #ifdef CONFIG_PM 81 void (*iommu_save)(void); 82 void (*iommu_restore)(void); 83 #endif 84 #endif /* CONFIG_PPC64 */ 85 86 void (*pci_dma_dev_setup)(struct pci_dev *dev); 87 void (*pci_dma_bus_setup)(struct pci_bus *bus); 88 89 /* Platform set_dma_mask and dma_get_required_mask overrides */ 90 int (*dma_set_mask)(struct device *dev, u64 dma_mask); 91 u64 (*dma_get_required_mask)(struct device *dev); 92 93 int (*probe)(void); 94 void (*setup_arch)(void); /* Optional, may be NULL */ 95 void (*init_early)(void); 96 /* Optional, may be NULL. */ 97 void (*show_cpuinfo)(struct seq_file *m); 98 void (*show_percpuinfo)(struct seq_file *m, int i); 99 100 void (*init_IRQ)(void); 101 102 /* Return an irq, or NO_IRQ to indicate there are none pending. 103 * If for some reason there is no irq, but the interrupt 104 * shouldn't be counted as spurious, return NO_IRQ_IGNORE. */ 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); 112 113 /* To setup PHBs when using automatic OF platform driver for PCI */ 114 int (*pci_setup_phb)(struct pci_controller *host); 115 116 #ifdef CONFIG_PCI_MSI 117 int (*msi_check_device)(struct pci_dev* dev, 118 int nvec, int type); 119 int (*setup_msi_irqs)(struct pci_dev *dev, 120 int nvec, int type); 121 void (*teardown_msi_irqs)(struct pci_dev *dev); 122 #endif 123 124 void (*restart)(char *cmd); 125 void (*power_off)(void); 126 void (*halt)(void); 127 void (*panic)(char *str); 128 void (*cpu_die)(void); 129 130 long (*time_init)(void); /* Optional, may be NULL */ 131 132 int (*set_rtc_time)(struct rtc_time *); 133 void (*get_rtc_time)(struct rtc_time *); 134 unsigned long (*get_boot_time)(void); 135 unsigned char (*rtc_read_val)(int addr); 136 void (*rtc_write_val)(int addr, unsigned char val); 137 138 void (*calibrate_decr)(void); 139 140 void (*progress)(char *, unsigned short); 141 142 /* Interface for platform error logging */ 143 void (*log_error)(char *buf, unsigned int err_type, int fatal); 144 145 unsigned char (*nvram_read_val)(int addr); 146 void (*nvram_write_val)(int addr, unsigned char val); 147 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 148 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 149 ssize_t (*nvram_size)(void); 150 void (*nvram_sync)(void); 151 152 /* Exception handlers */ 153 int (*system_reset_exception)(struct pt_regs *regs); 154 int (*machine_check_exception)(struct pt_regs *regs); 155 156 /* Motherboard/chipset features. This is a kind of general purpose 157 * hook used to control some machine specific features (like reset 158 * lines, chip power control, etc...). 159 */ 160 long (*feature_call)(unsigned int feature, ...); 161 162 /* Get legacy PCI/IDE interrupt mapping */ 163 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 164 165 /* Get access protection for /dev/mem */ 166 pgprot_t (*phys_mem_access_prot)(struct file *file, 167 unsigned long pfn, 168 unsigned long size, 169 pgprot_t vma_prot); 170 171 /* Idle loop for this platform, leave empty for default idle loop */ 172 void (*idle_loop)(void); 173 174 /* 175 * Function for waiting for work with reduced power in idle loop; 176 * called with interrupts disabled. 177 */ 178 void (*power_save)(void); 179 180 /* Function to enable performance monitor counters for this 181 platform, called once per cpu. */ 182 void (*enable_pmcs)(void); 183 184 /* Set DABR for this platform, leave empty for default implemenation */ 185 int (*set_dabr)(unsigned long dabr); 186 187 #ifdef CONFIG_PPC32 /* XXX for now */ 188 /* A general init function, called by ppc_init in init/main.c. 189 May be NULL. */ 190 void (*init)(void); 191 192 void (*kgdb_map_scc)(void); 193 194 /* 195 * optional PCI "hooks" 196 */ 197 /* Called at then very end of pcibios_init() */ 198 void (*pcibios_after_init)(void); 199 200 #endif /* CONFIG_PPC32 */ 201 202 /* Called in indirect_* to avoid touching devices */ 203 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); 204 205 /* Called after PPC generic resource fixup to perform 206 machine specific fixups */ 207 void (*pcibios_fixup_resources)(struct pci_dev *); 208 209 /* Called for each PCI bus in the system when it's probed */ 210 void (*pcibios_fixup_bus)(struct pci_bus *); 211 212 /* Called when pci_enable_device() is called. Returns 0 to 213 * allow assignment/enabling of the device. */ 214 int (*pcibios_enable_device_hook)(struct pci_dev *); 215 216 /* Called after scan and before resource survey */ 217 void (*pcibios_fixup_phb)(struct pci_controller *hose); 218 219 /* Called to shutdown machine specific hardware not already controlled 220 * by other drivers. 221 */ 222 void (*machine_shutdown)(void); 223 224 #ifdef CONFIG_KEXEC 225 void (*kexec_cpu_down)(int crash_shutdown, int secondary); 226 227 /* Called to do what every setup is needed on image and the 228 * reboot code buffer. Returns 0 on success. 229 * Provide your own (maybe dummy) implementation if your platform 230 * claims to support kexec. 231 */ 232 int (*machine_kexec_prepare)(struct kimage *image); 233 234 /* Called to perform the _real_ kexec. 235 * Do NOT allocate memory or fail here. We are past the point of 236 * no return. 237 */ 238 void (*machine_kexec)(struct kimage *image); 239 #endif /* CONFIG_KEXEC */ 240 241 #ifdef CONFIG_SUSPEND 242 /* These are called to disable and enable, respectively, IRQs when 243 * entering a suspend state. If NULL, then the generic versions 244 * will be called. The generic versions disable/enable the 245 * decrementer along with interrupts. 246 */ 247 void (*suspend_disable_irqs)(void); 248 void (*suspend_enable_irqs)(void); 249 #endif 250 int (*suspend_disable_cpu)(void); 251 252 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE 253 ssize_t (*cpu_probe)(const char *, size_t); 254 ssize_t (*cpu_release)(const char *, size_t); 255 #endif 256 }; 257 258 extern void e500_idle(void); 259 extern void power4_idle(void); 260 extern void power7_idle(void); 261 extern void ppc6xx_idle(void); 262 extern void book3e_idle(void); 263 264 /* 265 * ppc_md contains a copy of the machine description structure for the 266 * current platform. machine_id contains the initial address where the 267 * description was found during boot. 268 */ 269 extern struct machdep_calls ppc_md; 270 extern struct machdep_calls *machine_id; 271 272 #define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 273 274 #define define_machine(name) \ 275 extern struct machdep_calls mach_##name; \ 276 EXPORT_SYMBOL(mach_##name); \ 277 struct machdep_calls mach_##name __machine_desc = 278 279 #define machine_is(name) \ 280 ({ \ 281 extern struct machdep_calls mach_##name \ 282 __attribute__((weak)); \ 283 machine_id == &mach_##name; \ 284 }) 285 286 extern void probe_machine(void); 287 288 extern char cmd_line[COMMAND_LINE_SIZE]; 289 290 #ifdef CONFIG_PPC_PMAC 291 /* 292 * Power macintoshes have either a CUDA, PMU or SMU controlling 293 * system reset, power, NVRAM, RTC. 294 */ 295 typedef enum sys_ctrler_kind { 296 SYS_CTRLER_UNKNOWN = 0, 297 SYS_CTRLER_CUDA = 1, 298 SYS_CTRLER_PMU = 2, 299 SYS_CTRLER_SMU = 3, 300 } sys_ctrler_t; 301 extern sys_ctrler_t sys_ctrler; 302 303 #endif /* CONFIG_PPC_PMAC */ 304 305 306 /* Functions to produce codes on the leds. 307 * The SRC code should be unique for the message category and should 308 * be limited to the lower 24 bits (the upper 8 are set by these funcs), 309 * and (for boot & dump) should be sorted numerically in the order 310 * the events occur. 311 */ 312 /* Print a boot progress message. */ 313 void ppc64_boot_msg(unsigned int src, const char *msg); 314 315 static inline void log_error(char *buf, unsigned int err_type, int fatal) 316 { 317 if (ppc_md.log_error) 318 ppc_md.log_error(buf, err_type, fatal); 319 } 320 321 #define __define_machine_initcall(mach,level,fn,id) \ 322 static int __init __machine_initcall_##mach##_##fn(void) { \ 323 if (machine_is(mach)) return fn(); \ 324 return 0; \ 325 } \ 326 __define_initcall(level,__machine_initcall_##mach##_##fn,id); 327 328 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1) 329 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s) 330 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2) 331 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s) 332 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3) 333 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s) 334 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4) 335 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s) 336 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5) 337 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s) 338 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs) 339 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6) 340 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s) 341 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7) 342 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s) 343 344 #endif /* __KERNEL__ */ 345 #endif /* _ASM_POWERPC_MACHDEP_H */ 346