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 16 #include <asm/setup.h> 17 18 /* We export this macro for external modules like Alsa to know if 19 * ppc_md.feature_call is implemented or not 20 */ 21 #define CONFIG_PPC_HAS_FEATURE_CALLS 22 23 struct pt_regs; 24 struct pci_bus; 25 struct device_node; 26 struct iommu_table; 27 struct rtc_time; 28 struct file; 29 struct pci_controller; 30 struct kimage; 31 32 struct machdep_calls { 33 char *name; 34 #ifdef CONFIG_PPC64 35 void (*hpte_invalidate)(unsigned long slot, 36 unsigned long va, 37 int psize, int ssize, 38 int local); 39 long (*hpte_updatepp)(unsigned long slot, 40 unsigned long newpp, 41 unsigned long va, 42 int psize, int ssize, 43 int local); 44 void (*hpte_updateboltedpp)(unsigned long newpp, 45 unsigned long ea, 46 int psize, int ssize); 47 long (*hpte_insert)(unsigned long hpte_group, 48 unsigned long va, 49 unsigned long prpn, 50 unsigned long rflags, 51 unsigned long vflags, 52 int psize, int ssize); 53 long (*hpte_remove)(unsigned long hpte_group); 54 void (*hpte_removebolted)(unsigned long ea, 55 int psize, int ssize); 56 void (*flush_hash_range)(unsigned long number, int local); 57 58 /* special for kexec, to be called in real mode, linear mapping is 59 * destroyed as well */ 60 void (*hpte_clear_all)(void); 61 62 int (*tce_build)(struct iommu_table *tbl, 63 long index, 64 long npages, 65 unsigned long uaddr, 66 enum dma_data_direction direction, 67 struct dma_attrs *attrs); 68 void (*tce_free)(struct iommu_table *tbl, 69 long index, 70 long npages); 71 unsigned long (*tce_get)(struct iommu_table *tbl, 72 long index); 73 void (*tce_flush)(struct iommu_table *tbl); 74 75 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, 76 unsigned long flags, void *caller); 77 void (*iounmap)(volatile void __iomem *token); 78 79 #ifdef CONFIG_PM 80 void (*iommu_save)(void); 81 void (*iommu_restore)(void); 82 #endif 83 #endif /* CONFIG_PPC64 */ 84 85 void (*pci_dma_dev_setup)(struct pci_dev *dev); 86 void (*pci_dma_bus_setup)(struct pci_bus *bus); 87 88 /* Platform set_dma_mask override */ 89 int (*dma_set_mask)(struct device *dev, u64 dma_mask); 90 91 int (*probe)(void); 92 void (*setup_arch)(void); /* Optional, may be NULL */ 93 void (*init_early)(void); 94 /* Optional, may be NULL. */ 95 void (*show_cpuinfo)(struct seq_file *m); 96 void (*show_percpuinfo)(struct seq_file *m, int i); 97 98 void (*init_IRQ)(void); 99 100 /* Return an irq, or NO_IRQ to indicate there are none pending. 101 * If for some reason there is no irq, but the interrupt 102 * shouldn't be counted as spurious, return NO_IRQ_IGNORE. */ 103 unsigned int (*get_irq)(void); 104 105 /* PCI stuff */ 106 /* Called after scanning the bus, before allocating resources */ 107 void (*pcibios_fixup)(void); 108 int (*pci_probe_mode)(struct pci_bus *); 109 void (*pci_irq_fixup)(struct pci_dev *dev); 110 111 /* To setup PHBs when using automatic OF platform driver for PCI */ 112 int (*pci_setup_phb)(struct pci_controller *host); 113 114 #ifdef CONFIG_PCI_MSI 115 int (*msi_check_device)(struct pci_dev* dev, 116 int nvec, int type); 117 int (*setup_msi_irqs)(struct pci_dev *dev, 118 int nvec, int type); 119 void (*teardown_msi_irqs)(struct pci_dev *dev); 120 #endif 121 122 void (*restart)(char *cmd); 123 void (*power_off)(void); 124 void (*halt)(void); 125 void (*panic)(char *str); 126 void (*cpu_die)(void); 127 128 long (*time_init)(void); /* Optional, may be NULL */ 129 130 int (*set_rtc_time)(struct rtc_time *); 131 void (*get_rtc_time)(struct rtc_time *); 132 unsigned long (*get_boot_time)(void); 133 unsigned char (*rtc_read_val)(int addr); 134 void (*rtc_write_val)(int addr, unsigned char val); 135 136 void (*calibrate_decr)(void); 137 138 void (*progress)(char *, unsigned short); 139 140 /* Interface for platform error logging */ 141 void (*log_error)(char *buf, unsigned int err_type, int fatal); 142 143 unsigned char (*nvram_read_val)(int addr); 144 void (*nvram_write_val)(int addr, unsigned char val); 145 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 146 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 147 ssize_t (*nvram_size)(void); 148 void (*nvram_sync)(void); 149 150 /* Exception handlers */ 151 int (*system_reset_exception)(struct pt_regs *regs); 152 int (*machine_check_exception)(struct pt_regs *regs); 153 154 /* Motherboard/chipset features. This is a kind of general purpose 155 * hook used to control some machine specific features (like reset 156 * lines, chip power control, etc...). 157 */ 158 long (*feature_call)(unsigned int feature, ...); 159 160 /* Get legacy PCI/IDE interrupt mapping */ 161 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 162 163 /* Get access protection for /dev/mem */ 164 pgprot_t (*phys_mem_access_prot)(struct file *file, 165 unsigned long pfn, 166 unsigned long size, 167 pgprot_t vma_prot); 168 169 /* Idle loop for this platform, leave empty for default idle loop */ 170 void (*idle_loop)(void); 171 172 /* 173 * Function for waiting for work with reduced power in idle loop; 174 * called with interrupts disabled. 175 */ 176 void (*power_save)(void); 177 178 /* Function to enable performance monitor counters for this 179 platform, called once per cpu. */ 180 void (*enable_pmcs)(void); 181 182 /* Set DABR for this platform, leave empty for default implemenation */ 183 int (*set_dabr)(unsigned long dabr); 184 185 #ifdef CONFIG_PPC32 /* XXX for now */ 186 /* A general init function, called by ppc_init in init/main.c. 187 May be NULL. */ 188 void (*init)(void); 189 190 void (*kgdb_map_scc)(void); 191 192 /* 193 * optional PCI "hooks" 194 */ 195 /* Called at then very end of pcibios_init() */ 196 void (*pcibios_after_init)(void); 197 198 #endif /* CONFIG_PPC32 */ 199 200 /* Called in indirect_* to avoid touching devices */ 201 int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); 202 203 /* Called after PPC generic resource fixup to perform 204 machine specific fixups */ 205 void (*pcibios_fixup_resources)(struct pci_dev *); 206 207 /* Called for each PCI bus in the system when it's probed */ 208 void (*pcibios_fixup_bus)(struct pci_bus *); 209 210 /* Called when pci_enable_device() is called. Returns 0 to 211 * allow assignment/enabling of the device. */ 212 int (*pcibios_enable_device_hook)(struct pci_dev *); 213 214 /* Called to shutdown machine specific hardware not already controlled 215 * by other drivers. 216 */ 217 void (*machine_shutdown)(void); 218 219 #ifdef CONFIG_KEXEC 220 void (*kexec_cpu_down)(int crash_shutdown, int secondary); 221 222 /* Called to do what every setup is needed on image and the 223 * reboot code buffer. Returns 0 on success. 224 * Provide your own (maybe dummy) implementation if your platform 225 * claims to support kexec. 226 */ 227 int (*machine_kexec_prepare)(struct kimage *image); 228 229 /* Called to perform the _real_ kexec. 230 * Do NOT allocate memory or fail here. We are past the point of 231 * no return. 232 */ 233 void (*machine_kexec)(struct kimage *image); 234 #endif /* CONFIG_KEXEC */ 235 236 #ifdef CONFIG_SUSPEND 237 /* These are called to disable and enable, respectively, IRQs when 238 * entering a suspend state. If NULL, then the generic versions 239 * will be called. The generic versions disable/enable the 240 * decrementer along with interrupts. 241 */ 242 void (*suspend_disable_irqs)(void); 243 void (*suspend_enable_irqs)(void); 244 #endif 245 int (*suspend_disable_cpu)(void); 246 247 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE 248 ssize_t (*cpu_probe)(const char *, size_t); 249 ssize_t (*cpu_release)(const char *, size_t); 250 #endif 251 }; 252 253 extern void e500_idle(void); 254 extern void power4_idle(void); 255 extern void power7_idle(void); 256 extern void ppc6xx_idle(void); 257 extern void book3e_idle(void); 258 259 /* 260 * ppc_md contains a copy of the machine description structure for the 261 * current platform. machine_id contains the initial address where the 262 * description was found during boot. 263 */ 264 extern struct machdep_calls ppc_md; 265 extern struct machdep_calls *machine_id; 266 267 #define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 268 269 #define define_machine(name) \ 270 extern struct machdep_calls mach_##name; \ 271 EXPORT_SYMBOL(mach_##name); \ 272 struct machdep_calls mach_##name __machine_desc = 273 274 #define machine_is(name) \ 275 ({ \ 276 extern struct machdep_calls mach_##name \ 277 __attribute__((weak)); \ 278 machine_id == &mach_##name; \ 279 }) 280 281 extern void probe_machine(void); 282 283 extern char cmd_line[COMMAND_LINE_SIZE]; 284 285 #ifdef CONFIG_PPC_PMAC 286 /* 287 * Power macintoshes have either a CUDA, PMU or SMU controlling 288 * system reset, power, NVRAM, RTC. 289 */ 290 typedef enum sys_ctrler_kind { 291 SYS_CTRLER_UNKNOWN = 0, 292 SYS_CTRLER_CUDA = 1, 293 SYS_CTRLER_PMU = 2, 294 SYS_CTRLER_SMU = 3, 295 } sys_ctrler_t; 296 extern sys_ctrler_t sys_ctrler; 297 298 #endif /* CONFIG_PPC_PMAC */ 299 300 301 /* Functions to produce codes on the leds. 302 * The SRC code should be unique for the message category and should 303 * be limited to the lower 24 bits (the upper 8 are set by these funcs), 304 * and (for boot & dump) should be sorted numerically in the order 305 * the events occur. 306 */ 307 /* Print a boot progress message. */ 308 void ppc64_boot_msg(unsigned int src, const char *msg); 309 310 static inline void log_error(char *buf, unsigned int err_type, int fatal) 311 { 312 if (ppc_md.log_error) 313 ppc_md.log_error(buf, err_type, fatal); 314 } 315 316 #define __define_machine_initcall(mach,level,fn,id) \ 317 static int __init __machine_initcall_##mach##_##fn(void) { \ 318 if (machine_is(mach)) return fn(); \ 319 return 0; \ 320 } \ 321 __define_initcall(level,__machine_initcall_##mach##_##fn,id); 322 323 #define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1) 324 #define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s) 325 #define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2) 326 #define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s) 327 #define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3) 328 #define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s) 329 #define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4) 330 #define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s) 331 #define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5) 332 #define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s) 333 #define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs) 334 #define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6) 335 #define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s) 336 #define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7) 337 #define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s) 338 339 #endif /* __KERNEL__ */ 340 #endif /* _ASM_POWERPC_MACHDEP_H */ 341