machdep.h revision 4c2245bb5c9c6e9950ee8919b4462dfa77f7a28f
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 24struct pt_regs; 25struct pci_bus; 26struct device_node; 27struct iommu_table; 28struct rtc_time; 29struct file; 30struct pci_controller; 31struct kimage; 32 33struct 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 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 after scan and before resource survey */ 215 void (*pcibios_fixup_phb)(struct pci_controller *hose); 216 217 /* Called during PCI resource reassignment */ 218 resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned long type); 219 220 /* Called to shutdown machine specific hardware not already controlled 221 * by other drivers. 222 */ 223 void (*machine_shutdown)(void); 224 225#ifdef CONFIG_KEXEC 226 void (*kexec_cpu_down)(int crash_shutdown, int secondary); 227 228 /* Called to do what every setup is needed on image and the 229 * reboot code buffer. Returns 0 on success. 230 * Provide your own (maybe dummy) implementation if your platform 231 * claims to support kexec. 232 */ 233 int (*machine_kexec_prepare)(struct kimage *image); 234 235 /* Called to perform the _real_ kexec. 236 * Do NOT allocate memory or fail here. We are past the point of 237 * no return. 238 */ 239 void (*machine_kexec)(struct kimage *image); 240#endif /* CONFIG_KEXEC */ 241 242#ifdef CONFIG_SUSPEND 243 /* These are called to disable and enable, respectively, IRQs when 244 * entering a suspend state. If NULL, then the generic versions 245 * will be called. The generic versions disable/enable the 246 * decrementer along with interrupts. 247 */ 248 void (*suspend_disable_irqs)(void); 249 void (*suspend_enable_irqs)(void); 250#endif 251 int (*suspend_disable_cpu)(void); 252 253#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE 254 ssize_t (*cpu_probe)(const char *, size_t); 255 ssize_t (*cpu_release)(const char *, size_t); 256#endif 257}; 258 259extern void e500_idle(void); 260extern void power4_idle(void); 261extern void power7_idle(void); 262extern void ppc6xx_idle(void); 263extern void book3e_idle(void); 264 265/* 266 * ppc_md contains a copy of the machine description structure for the 267 * current platform. machine_id contains the initial address where the 268 * description was found during boot. 269 */ 270extern struct machdep_calls ppc_md; 271extern struct machdep_calls *machine_id; 272 273#define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 274 275#define define_machine(name) \ 276 extern struct machdep_calls mach_##name; \ 277 EXPORT_SYMBOL(mach_##name); \ 278 struct machdep_calls mach_##name __machine_desc = 279 280#define machine_is(name) \ 281 ({ \ 282 extern struct machdep_calls mach_##name \ 283 __attribute__((weak)); \ 284 machine_id == &mach_##name; \ 285 }) 286 287extern void probe_machine(void); 288 289extern char cmd_line[COMMAND_LINE_SIZE]; 290 291#ifdef CONFIG_PPC_PMAC 292/* 293 * Power macintoshes have either a CUDA, PMU or SMU controlling 294 * system reset, power, NVRAM, RTC. 295 */ 296typedef enum sys_ctrler_kind { 297 SYS_CTRLER_UNKNOWN = 0, 298 SYS_CTRLER_CUDA = 1, 299 SYS_CTRLER_PMU = 2, 300 SYS_CTRLER_SMU = 3, 301} sys_ctrler_t; 302extern sys_ctrler_t sys_ctrler; 303 304#endif /* CONFIG_PPC_PMAC */ 305 306 307/* Functions to produce codes on the leds. 308 * The SRC code should be unique for the message category and should 309 * be limited to the lower 24 bits (the upper 8 are set by these funcs), 310 * and (for boot & dump) should be sorted numerically in the order 311 * the events occur. 312 */ 313/* Print a boot progress message. */ 314void ppc64_boot_msg(unsigned int src, const char *msg); 315 316static inline void log_error(char *buf, unsigned int err_type, int fatal) 317{ 318 if (ppc_md.log_error) 319 ppc_md.log_error(buf, err_type, fatal); 320} 321 322#define __define_machine_initcall(mach,level,fn,id) \ 323 static int __init __machine_initcall_##mach##_##fn(void) { \ 324 if (machine_is(mach)) return fn(); \ 325 return 0; \ 326 } \ 327 __define_initcall(level,__machine_initcall_##mach##_##fn,id); 328 329#define machine_core_initcall(mach,fn) __define_machine_initcall(mach,"1",fn,1) 330#define machine_core_initcall_sync(mach,fn) __define_machine_initcall(mach,"1s",fn,1s) 331#define machine_postcore_initcall(mach,fn) __define_machine_initcall(mach,"2",fn,2) 332#define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s) 333#define machine_arch_initcall(mach,fn) __define_machine_initcall(mach,"3",fn,3) 334#define machine_arch_initcall_sync(mach,fn) __define_machine_initcall(mach,"3s",fn,3s) 335#define machine_subsys_initcall(mach,fn) __define_machine_initcall(mach,"4",fn,4) 336#define machine_subsys_initcall_sync(mach,fn) __define_machine_initcall(mach,"4s",fn,4s) 337#define machine_fs_initcall(mach,fn) __define_machine_initcall(mach,"5",fn,5) 338#define machine_fs_initcall_sync(mach,fn) __define_machine_initcall(mach,"5s",fn,5s) 339#define machine_rootfs_initcall(mach,fn) __define_machine_initcall(mach,"rootfs",fn,rootfs) 340#define machine_device_initcall(mach,fn) __define_machine_initcall(mach,"6",fn,6) 341#define machine_device_initcall_sync(mach,fn) __define_machine_initcall(mach,"6s",fn,6s) 342#define machine_late_initcall(mach,fn) __define_machine_initcall(mach,"7",fn,7) 343#define machine_late_initcall_sync(mach,fn) __define_machine_initcall(mach,"7s",fn,7s) 344 345#endif /* __KERNEL__ */ 346#endif /* _ASM_POWERPC_MACHDEP_H */ 347