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