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 23struct pt_regs; 24struct pci_bus; 25struct device_node; 26struct iommu_table; 27struct rtc_time; 28struct file; 29struct pci_controller; 30#ifdef CONFIG_KEXEC 31struct kimage; 32#endif 33 34#ifdef CONFIG_SMP 35struct smp_ops_t { 36 void (*message_pass)(int target, int msg); 37 int (*probe)(void); 38 void (*kick_cpu)(int nr); 39 void (*setup_cpu)(int nr); 40 void (*take_timebase)(void); 41 void (*give_timebase)(void); 42 int (*cpu_enable)(unsigned int nr); 43 int (*cpu_disable)(void); 44 void (*cpu_die)(unsigned int nr); 45 int (*cpu_bootable)(unsigned int nr); 46}; 47#endif 48 49struct machdep_calls { 50 char *name; 51#ifdef CONFIG_PPC64 52 void (*hpte_invalidate)(unsigned long slot, 53 unsigned long va, 54 int psize, 55 int local); 56 long (*hpte_updatepp)(unsigned long slot, 57 unsigned long newpp, 58 unsigned long va, 59 int pize, 60 int local); 61 void (*hpte_updateboltedpp)(unsigned long newpp, 62 unsigned long ea, 63 int psize); 64 long (*hpte_insert)(unsigned long hpte_group, 65 unsigned long va, 66 unsigned long prpn, 67 unsigned long rflags, 68 unsigned long vflags, 69 int psize); 70 long (*hpte_remove)(unsigned long hpte_group); 71 void (*flush_hash_range)(unsigned long number, int local); 72 73 /* special for kexec, to be called in real mode, linar mapping is 74 * destroyed as well */ 75 void (*hpte_clear_all)(void); 76 77 void (*tce_build)(struct iommu_table * tbl, 78 long index, 79 long npages, 80 unsigned long uaddr, 81 enum dma_data_direction direction); 82 void (*tce_free)(struct iommu_table *tbl, 83 long index, 84 long npages); 85 unsigned long (*tce_get)(struct iommu_table *tbl, 86 long index); 87 void (*tce_flush)(struct iommu_table *tbl); 88 void (*pci_dma_dev_setup)(struct pci_dev *dev); 89 void (*pci_dma_bus_setup)(struct pci_bus *bus); 90 91 void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, 92 unsigned long flags); 93 void (*iounmap)(volatile void __iomem *token); 94 95#ifdef CONFIG_PM 96 void (*iommu_save)(void); 97 void (*iommu_restore)(void); 98#endif 99#endif /* CONFIG_PPC64 */ 100 101 int (*probe)(void); 102 void (*setup_arch)(void); 103 void (*init_early)(void); 104 /* Optional, may be NULL. */ 105 void (*show_cpuinfo)(struct seq_file *m); 106 void (*show_percpuinfo)(struct seq_file *m, int i); 107 108 void (*init_IRQ)(void); 109 unsigned int (*get_irq)(void); 110#ifdef CONFIG_KEXEC 111 void (*kexec_cpu_down)(int crash_shutdown, int secondary); 112#endif 113 114 /* PCI stuff */ 115 /* Called after scanning the bus, before allocating resources */ 116 void (*pcibios_fixup)(void); 117 int (*pci_probe_mode)(struct pci_bus *); 118 void (*pci_irq_fixup)(struct pci_dev *dev); 119 120 /* To setup PHBs when using automatic OF platform driver for PCI */ 121 int (*pci_setup_phb)(struct pci_controller *host); 122 123#ifdef CONFIG_PCI_MSI 124 int (*msi_check_device)(struct pci_dev* dev, 125 int nvec, int type); 126 int (*setup_msi_irqs)(struct pci_dev *dev, 127 int nvec, int type); 128 void (*teardown_msi_irqs)(struct pci_dev *dev); 129#endif 130 131 void (*restart)(char *cmd); 132 void (*power_off)(void); 133 void (*halt)(void); 134 void (*panic)(char *str); 135 void (*cpu_die)(void); 136 137 long (*time_init)(void); /* Optional, may be NULL */ 138 139 int (*set_rtc_time)(struct rtc_time *); 140 void (*get_rtc_time)(struct rtc_time *); 141 unsigned long (*get_boot_time)(void); 142 unsigned char (*rtc_read_val)(int addr); 143 void (*rtc_write_val)(int addr, unsigned char val); 144 145 void (*calibrate_decr)(void); 146 147 void (*progress)(char *, unsigned short); 148 149 /* Interface for platform error logging */ 150 void (*log_error)(char *buf, unsigned int err_type, int fatal); 151 152 unsigned char (*nvram_read_val)(int addr); 153 void (*nvram_write_val)(int addr, unsigned char val); 154 ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); 155 ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); 156 ssize_t (*nvram_size)(void); 157 void (*nvram_sync)(void); 158 159 /* Exception handlers */ 160 int (*system_reset_exception)(struct pt_regs *regs); 161 int (*machine_check_exception)(struct pt_regs *regs); 162 163 /* Motherboard/chipset features. This is a kind of general purpose 164 * hook used to control some machine specific features (like reset 165 * lines, chip power control, etc...). 166 */ 167 long (*feature_call)(unsigned int feature, ...); 168 169 /* Get legacy PCI/IDE interrupt mapping */ 170 int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); 171 172 /* Get access protection for /dev/mem */ 173 pgprot_t (*phys_mem_access_prot)(struct file *file, 174 unsigned long pfn, 175 unsigned long size, 176 pgprot_t vma_prot); 177 178 /* Idle loop for this platform, leave empty for default idle loop */ 179 void (*idle_loop)(void); 180 181 /* 182 * Function for waiting for work with reduced power in idle loop; 183 * called with interrupts disabled. 184 */ 185 void (*power_save)(void); 186 187 /* Function to enable performance monitor counters for this 188 platform, called once per cpu. */ 189 void (*enable_pmcs)(void); 190 191 /* Set DABR for this platform, leave empty for default implemenation */ 192 int (*set_dabr)(unsigned long dabr); 193 194#ifdef CONFIG_PPC32 195 /* A general init function, called by ppc_init in init/main.c. 196 May be NULL. */ 197 void (*init)(void); 198 199 void (*setup_io_mappings)(void); 200 201 void (*early_serial_map)(void); 202 void (*kgdb_map_scc)(void); 203 204 /* 205 * optional PCI "hooks" 206 */ 207 208 /* Called after PPC generic resource fixup to perform 209 machine specific fixups */ 210 void (*pcibios_fixup_resources)(struct pci_dev *); 211 212 /* Called for each PCI bus in the system when it's probed */ 213 void (*pcibios_fixup_bus)(struct pci_bus *); 214 215 /* Called when pci_enable_device() is called (initial=0) or 216 * when a device with no assigned resource is found (initial=1). 217 * Returns 0 to allow assignment/enabling of the device. */ 218 int (*pcibios_enable_device_hook)(struct pci_dev *, int initial); 219 220 /* Called in indirect_* to avoid touching devices */ 221 int (*pci_exclude_device)(unsigned char, unsigned char); 222 223 /* Called at then very end of pcibios_init() */ 224 void (*pcibios_after_init)(void); 225 226#endif /* CONFIG_PPC32 */ 227 228 /* Called to shutdown machine specific hardware not already controlled 229 * by other drivers. 230 */ 231 void (*machine_shutdown)(void); 232 233#ifdef CONFIG_KEXEC 234 void (*machine_crash_shutdown)(struct pt_regs *regs); 235 236 /* Called to do what every setup is needed on image and the 237 * reboot code buffer. Returns 0 on success. 238 * Provide your own (maybe dummy) implementation if your platform 239 * claims to support kexec. 240 */ 241 int (*machine_kexec_prepare)(struct kimage *image); 242 243 /* Called to handle any machine specific cleanup on image */ 244 void (*machine_kexec_cleanup)(struct kimage *image); 245 246 /* Called to perform the _real_ kexec. 247 * Do NOT allocate memory or fail here. We are past the point of 248 * no return. 249 */ 250 void (*machine_kexec)(struct kimage *image); 251#endif /* CONFIG_KEXEC */ 252}; 253 254extern void power4_idle(void); 255extern void power4_cpu_offline_powersave(void); 256extern void ppc6xx_idle(void); 257 258/* 259 * ppc_md contains a copy of the machine description structure for the 260 * current platform. machine_id contains the initial address where the 261 * description was found during boot. 262 */ 263extern struct machdep_calls ppc_md; 264extern struct machdep_calls *machine_id; 265 266#define __machine_desc __attribute__ ((__section__ (".machine.desc"))) 267 268#define define_machine(name) \ 269 extern struct machdep_calls mach_##name; \ 270 EXPORT_SYMBOL(mach_##name); \ 271 struct machdep_calls mach_##name __machine_desc = 272 273#define machine_is(name) \ 274 ({ \ 275 extern struct machdep_calls mach_##name \ 276 __attribute__((weak)); \ 277 machine_id == &mach_##name; \ 278 }) 279 280extern void probe_machine(void); 281 282extern char cmd_line[COMMAND_LINE_SIZE]; 283 284#ifdef CONFIG_PPC_PMAC 285/* 286 * Power macintoshes have either a CUDA, PMU or SMU controlling 287 * system reset, power, NVRAM, RTC. 288 */ 289typedef enum sys_ctrler_kind { 290 SYS_CTRLER_UNKNOWN = 0, 291 SYS_CTRLER_CUDA = 1, 292 SYS_CTRLER_PMU = 2, 293 SYS_CTRLER_SMU = 3, 294} sys_ctrler_t; 295extern sys_ctrler_t sys_ctrler; 296 297#endif /* CONFIG_PPC_PMAC */ 298 299extern void setup_pci_ptrs(void); 300 301#ifdef CONFIG_SMP 302/* Poor default implementations */ 303extern void __devinit smp_generic_give_timebase(void); 304extern void __devinit smp_generic_take_timebase(void); 305#endif /* CONFIG_SMP */ 306 307 308/* Functions to produce codes on the leds. 309 * The SRC code should be unique for the message category and should 310 * be limited to the lower 24 bits (the upper 8 are set by these funcs), 311 * and (for boot & dump) should be sorted numerically in the order 312 * the events occur. 313 */ 314/* Print a boot progress message. */ 315void ppc64_boot_msg(unsigned int src, const char *msg); 316/* Print a termination message (print only -- does not stop the kernel) */ 317void ppc64_terminate_msg(unsigned int src, const char *msg); 318 319static inline void log_error(char *buf, unsigned int err_type, int fatal) 320{ 321 if (ppc_md.log_error) 322 ppc_md.log_error(buf, err_type, fatal); 323} 324 325#endif /* __KERNEL__ */ 326#endif /* _ASM_POWERPC_MACHDEP_H */ 327