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, unsigned long flags); 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)(unsigned long vsid, 61 unsigned long addr, 62 unsigned char *hpte_slot_array, 63 int psize, int ssize, int local); 64 /* 65 * Special for kexec. 66 * To be called in real mode with interrupts disabled. No locks are 67 * taken as such, concurrent access on pre POWER5 hardware could result 68 * in a deadlock. 69 * The linear mapping is destroyed as well. 70 */ 71 void (*hpte_clear_all)(void); 72 73 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, 74 unsigned long flags, void *caller); 75 void (*iounmap)(volatile void __iomem *token); 76 77 #ifdef CONFIG_PM 78 void (*iommu_save)(void); 79 void (*iommu_restore)(void); 80 #endif 81 #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE 82 unsigned long (*memory_block_size)(void); 83 #endif 84 #endif /* CONFIG_PPC64 */ 85 86 /* Platform set_dma_mask and dma_get_required_mask overrides */ 87 int (*dma_set_mask)(struct device *dev, u64 dma_mask); 88 u64 (*dma_get_required_mask)(struct device *dev); 89 90 int (*probe)(void); 91 void (*setup_arch)(void); /* Optional, may be NULL */ 92 void (*init_early)(void); 93 /* Optional, may be NULL. */ 94 void (*show_cpuinfo)(struct seq_file *m); 95 void (*show_percpuinfo)(struct seq_file *m, int i); 96 /* Returns the current operating frequency of "cpu" in Hz */ 97 unsigned long (*get_proc_freq)(unsigned int cpu); 98 99 void (*init_IRQ)(void); 100 101 /* Return an irq, or NO_IRQ to indicate there are none pending. */ 102 unsigned int (*get_irq)(void); 103 104 /* PCI stuff */ 105 /* Called after allocating resources */ 106 void (*pcibios_fixup)(void); 107 void (*pci_irq_fixup)(struct pci_dev *dev); 108 int (*pcibios_root_bridge_prepare)(struct pci_host_bridge 109 *bridge); 110 111 /* To setup PHBs when using automatic OF platform driver for PCI */ 112 int (*pci_setup_phb)(struct pci_controller *host); 113 114 void (*restart)(char *cmd); 115 void (*halt)(void); 116 void (*panic)(char *str); 117 void (*cpu_die)(void); 118 119 long (*time_init)(void); /* Optional, may be NULL */ 120 121 int (*set_rtc_time)(struct rtc_time *); 122 void (*get_rtc_time)(struct rtc_time *); 123 unsigned long (*get_boot_time)(void); 124 unsigned char (*rtc_read_val)(int addr); 125 void (*rtc_write_val)(int addr, unsigned char val); 126 127 void (*calibrate_decr)(void); 128 129 void (*progress)(char *, unsigned short); 130 131 /* Interface for platform error logging */ 132 void (*log_error)(char *buf, unsigned int err_type, int fatal); 133 134 unsigned char (*nvram_read_val)(int addr); 135 void (*nvram_write_val)(int addr, unsigned char val); 136 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 137 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 138 ssize_t (*nvram_size)(void); 139 void (*nvram_sync)(void); 140 141 /* Exception handlers */ 142 int (*system_reset_exception)(struct pt_regs *regs); 143 int (*machine_check_exception)(struct pt_regs *regs); 144 int (*handle_hmi_exception)(struct pt_regs *regs); 145 146 /* Early exception handlers called in realmode */ 147 int (*hmi_exception_early)(struct pt_regs *regs); 148 149 /* Called during machine check exception to retrive fixup address. */ 150 bool (*mce_check_early_recovery)(struct pt_regs *regs); 151 152 /* Motherboard/chipset features. This is a kind of general purpose 153 * hook used to control some machine specific features (like reset 154 * lines, chip power control, etc...). 155 */ 156 long (*feature_call)(unsigned int feature, ...); 157 158 /* Get legacy PCI/IDE interrupt mapping */ 159 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 160 161 /* Get access protection for /dev/mem */ 162 pgprot_t (*phys_mem_access_prot)(struct file *file, 163 unsigned long pfn, 164 unsigned long size, 165 pgprot_t vma_prot); 166 167 /* 168 * Function for waiting for work with reduced power in idle loop; 169 * called with interrupts disabled. 170 */ 171 void (*power_save)(void); 172 173 /* Function to enable performance monitor counters for this 174 platform, called once per cpu. */ 175 void (*enable_pmcs)(void); 176 177 /* Set DABR for this platform, leave empty for default implemenation */ 178 int (*set_dabr)(unsigned long dabr, 179 unsigned long dabrx); 180 181 /* Set DAWR for this platform, leave empty for default implemenation */ 182 int (*set_dawr)(unsigned long dawr, 183 unsigned long dawrx); 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 after scan and before resource survey */ 211 void (*pcibios_fixup_phb)(struct pci_controller *hose); 212 213 #ifdef CONFIG_PCI_IOV 214 void (*pcibios_fixup_sriov)(struct pci_dev *pdev); 215 resource_size_t (*pcibios_iov_resource_alignment)(struct pci_dev *, int resno); 216 #endif /* CONFIG_PCI_IOV */ 217 218 /* Called to shutdown machine specific hardware not already controlled 219 * by other drivers. 220 */ 221 void (*machine_shutdown)(void); 222 223 #ifdef CONFIG_KEXEC 224 void (*kexec_cpu_down)(int crash_shutdown, int secondary); 225 226 /* Called to do what every setup is needed on image and the 227 * reboot code buffer. Returns 0 on success. 228 * Provide your own (maybe dummy) implementation if your platform 229 * claims to support kexec. 230 */ 231 int (*machine_kexec_prepare)(struct kimage *image); 232 233 /* Called to perform the _real_ kexec. 234 * Do NOT allocate memory or fail here. We are past the point of 235 * no return. 236 */ 237 void (*machine_kexec)(struct kimage *image); 238 #endif /* CONFIG_KEXEC */ 239 240 #ifdef CONFIG_SUSPEND 241 /* These are called to disable and enable, respectively, IRQs when 242 * entering a suspend state. If NULL, then the generic versions 243 * will be called. The generic versions disable/enable the 244 * decrementer along with interrupts. 245 */ 246 void (*suspend_disable_irqs)(void); 247 void (*suspend_enable_irqs)(void); 248 #endif 249 int (*suspend_disable_cpu)(void); 250 251 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE 252 ssize_t (*cpu_probe)(const char *, size_t); 253 ssize_t (*cpu_release)(const char *, size_t); 254 #endif 255 256 #ifdef CONFIG_ARCH_RANDOM 257 int (*get_random_seed)(unsigned long *v); 258 #endif 259 }; 260 261 extern void e500_idle(void); 262 extern void power4_idle(void); 263 extern void power7_idle(void); 264 extern void ppc6xx_idle(void); 265 extern void book3e_idle(void); 266 267 /* 268 * ppc_md contains a copy of the machine description structure for the 269 * current platform. machine_id contains the initial address where the 270 * description was found during boot. 271 */ 272 extern struct machdep_calls ppc_md; 273 extern struct machdep_calls *machine_id; 274 275 #define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 276 277 #define define_machine(name) \ 278 extern struct machdep_calls mach_##name; \ 279 EXPORT_SYMBOL(mach_##name); \ 280 struct machdep_calls mach_##name __machine_desc = 281 282 #define machine_is(name) \ 283 ({ \ 284 extern struct machdep_calls mach_##name \ 285 __attribute__((weak)); \ 286 machine_id == &mach_##name; \ 287 }) 288 289 extern void probe_machine(void); 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 */ 296 typedef 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; 302 extern sys_ctrler_t sys_ctrler; 303 304 #endif /* CONFIG_PPC_PMAC */ 305 306 static inline void log_error(char *buf, unsigned int err_type, int fatal) 307 { 308 if (ppc_md.log_error) 309 ppc_md.log_error(buf, err_type, fatal); 310 } 311 312 #define __define_machine_initcall(mach, fn, id) \ 313 static int __init __machine_initcall_##mach##_##fn(void) { \ 314 if (machine_is(mach)) return fn(); \ 315 return 0; \ 316 } \ 317 __define_initcall(__machine_initcall_##mach##_##fn, id); 318 319 #define machine_early_initcall(mach, fn) __define_machine_initcall(mach, fn, early) 320 #define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1) 321 #define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s) 322 #define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2) 323 #define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s) 324 #define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3) 325 #define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s) 326 #define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4) 327 #define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s) 328 #define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5) 329 #define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s) 330 #define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs) 331 #define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6) 332 #define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s) 333 #define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7) 334 #define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s) 335 336 #endif /* __KERNEL__ */ 337 #endif /* _ASM_POWERPC_MACHDEP_H */ 338