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299 lines
9.4 KiB
299 lines
9.4 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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#ifndef _ASM_POWERPC_MACHDEP_H |
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#define _ASM_POWERPC_MACHDEP_H |
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#ifdef __KERNEL__ |
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#include <linux/seq_file.h> |
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#include <linux/init.h> |
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#include <linux/dma-mapping.h> |
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#include <linux/export.h> |
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#include <asm/setup.h> |
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/* We export this macro for external modules like Alsa to know if |
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* ppc_md.feature_call is implemented or not |
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*/ |
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#define CONFIG_PPC_HAS_FEATURE_CALLS |
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struct pt_regs; |
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struct pci_bus; |
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struct device_node; |
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struct iommu_table; |
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struct rtc_time; |
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struct file; |
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struct pci_controller; |
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struct kimage; |
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struct pci_host_bridge; |
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struct machdep_calls { |
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char *name; |
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#ifdef CONFIG_PPC64 |
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#ifdef CONFIG_PM |
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void (*iommu_save)(void); |
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void (*iommu_restore)(void); |
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#endif |
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#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE |
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unsigned long (*memory_block_size)(void); |
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#endif |
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#endif /* CONFIG_PPC64 */ |
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void (*dma_set_mask)(struct device *dev, u64 dma_mask); |
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int (*probe)(void); |
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void (*setup_arch)(void); /* Optional, may be NULL */ |
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/* Optional, may be NULL. */ |
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void (*show_cpuinfo)(struct seq_file *m); |
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void (*show_percpuinfo)(struct seq_file *m, int i); |
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/* Returns the current operating frequency of "cpu" in Hz */ |
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unsigned long (*get_proc_freq)(unsigned int cpu); |
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void (*init_IRQ)(void); |
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/* Return an irq, or 0 to indicate there are none pending. */ |
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unsigned int (*get_irq)(void); |
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/* PCI stuff */ |
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/* Called after allocating resources */ |
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void (*pcibios_fixup)(void); |
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void (*pci_irq_fixup)(struct pci_dev *dev); |
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int (*pcibios_root_bridge_prepare)(struct pci_host_bridge |
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*bridge); |
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/* finds all the pci_controllers present at boot */ |
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void (*discover_phbs)(void); |
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/* To setup PHBs when using automatic OF platform driver for PCI */ |
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int (*pci_setup_phb)(struct pci_controller *host); |
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void __noreturn (*restart)(char *cmd); |
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void __noreturn (*halt)(void); |
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void (*panic)(char *str); |
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long (*time_init)(void); /* Optional, may be NULL */ |
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int (*set_rtc_time)(struct rtc_time *); |
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void (*get_rtc_time)(struct rtc_time *); |
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time64_t (*get_boot_time)(void); |
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unsigned char (*rtc_read_val)(int addr); |
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void (*rtc_write_val)(int addr, unsigned char val); |
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void (*calibrate_decr)(void); |
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void (*progress)(char *, unsigned short); |
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/* Interface for platform error logging */ |
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void (*log_error)(char *buf, unsigned int err_type, int fatal); |
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unsigned char (*nvram_read_val)(int addr); |
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void (*nvram_write_val)(int addr, unsigned char val); |
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ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); |
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ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); |
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ssize_t (*nvram_size)(void); |
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void (*nvram_sync)(void); |
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/* Exception handlers */ |
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int (*system_reset_exception)(struct pt_regs *regs); |
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int (*machine_check_exception)(struct pt_regs *regs); |
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int (*handle_hmi_exception)(struct pt_regs *regs); |
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/* Early exception handlers called in realmode */ |
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int (*hmi_exception_early)(struct pt_regs *regs); |
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long (*machine_check_early)(struct pt_regs *regs); |
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/* Called during machine check exception to retrive fixup address. */ |
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bool (*mce_check_early_recovery)(struct pt_regs *regs); |
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/* Motherboard/chipset features. This is a kind of general purpose |
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* hook used to control some machine specific features (like reset |
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* lines, chip power control, etc...). |
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*/ |
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long (*feature_call)(unsigned int feature, ...); |
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/* Get legacy PCI/IDE interrupt mapping */ |
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int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); |
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/* Get access protection for /dev/mem */ |
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pgprot_t (*phys_mem_access_prot)(struct file *file, |
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unsigned long pfn, |
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unsigned long size, |
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pgprot_t vma_prot); |
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/* |
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* Function for waiting for work with reduced power in idle loop; |
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* called with interrupts disabled. |
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*/ |
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void (*power_save)(void); |
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/* Function to enable performance monitor counters for this |
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platform, called once per cpu. */ |
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void (*enable_pmcs)(void); |
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/* Set DABR for this platform, leave empty for default implementation */ |
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int (*set_dabr)(unsigned long dabr, |
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unsigned long dabrx); |
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/* Set DAWR for this platform, leave empty for default implementation */ |
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int (*set_dawr)(int nr, unsigned long dawr, |
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unsigned long dawrx); |
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#ifdef CONFIG_PPC32 /* XXX for now */ |
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/* A general init function, called by ppc_init in init/main.c. |
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May be NULL. */ |
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void (*init)(void); |
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void (*kgdb_map_scc)(void); |
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/* |
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* optional PCI "hooks" |
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*/ |
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/* Called at then very end of pcibios_init() */ |
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void (*pcibios_after_init)(void); |
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#endif /* CONFIG_PPC32 */ |
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/* Called in indirect_* to avoid touching devices */ |
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int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); |
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/* Called after PPC generic resource fixup to perform |
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machine specific fixups */ |
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void (*pcibios_fixup_resources)(struct pci_dev *); |
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/* Called for each PCI bus in the system when it's probed */ |
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void (*pcibios_fixup_bus)(struct pci_bus *); |
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/* Called after scan and before resource survey */ |
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void (*pcibios_fixup_phb)(struct pci_controller *hose); |
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/* |
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* Called after device has been added to bus and |
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* before sysfs has been created. |
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*/ |
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void (*pcibios_bus_add_device)(struct pci_dev *pdev); |
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resource_size_t (*pcibios_default_alignment)(void); |
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#ifdef CONFIG_PCI_IOV |
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void (*pcibios_fixup_sriov)(struct pci_dev *pdev); |
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resource_size_t (*pcibios_iov_resource_alignment)(struct pci_dev *, int resno); |
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int (*pcibios_sriov_enable)(struct pci_dev *pdev, u16 num_vfs); |
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int (*pcibios_sriov_disable)(struct pci_dev *pdev); |
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#endif /* CONFIG_PCI_IOV */ |
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/* Called to shutdown machine specific hardware not already controlled |
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* by other drivers. |
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*/ |
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void (*machine_shutdown)(void); |
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#ifdef CONFIG_KEXEC_CORE |
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void (*kexec_cpu_down)(int crash_shutdown, int secondary); |
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/* Called to do what every setup is needed on image and the |
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* reboot code buffer. Returns 0 on success. |
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* Provide your own (maybe dummy) implementation if your platform |
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* claims to support kexec. |
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*/ |
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int (*machine_kexec_prepare)(struct kimage *image); |
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/* Called to perform the _real_ kexec. |
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* Do NOT allocate memory or fail here. We are past the point of |
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* no return. |
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*/ |
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void (*machine_kexec)(struct kimage *image); |
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#endif /* CONFIG_KEXEC_CORE */ |
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#ifdef CONFIG_SUSPEND |
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/* These are called to disable and enable, respectively, IRQs when |
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* entering a suspend state. If NULL, then the generic versions |
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* will be called. The generic versions disable/enable the |
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* decrementer along with interrupts. |
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*/ |
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void (*suspend_disable_irqs)(void); |
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void (*suspend_enable_irqs)(void); |
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#endif |
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#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE |
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ssize_t (*cpu_probe)(const char *, size_t); |
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ssize_t (*cpu_release)(const char *, size_t); |
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#endif |
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#ifdef CONFIG_ARCH_RANDOM |
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int (*get_random_seed)(unsigned long *v); |
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#endif |
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}; |
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extern void e500_idle(void); |
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extern void power4_idle(void); |
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extern void ppc6xx_idle(void); |
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extern void book3e_idle(void); |
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/* |
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* ppc_md contains a copy of the machine description structure for the |
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* current platform. machine_id contains the initial address where the |
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* description was found during boot. |
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*/ |
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extern struct machdep_calls ppc_md; |
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extern struct machdep_calls *machine_id; |
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#define __machine_desc __section(".machine.desc") |
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#define define_machine(name) \ |
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extern struct machdep_calls mach_##name; \ |
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EXPORT_SYMBOL(mach_##name); \ |
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struct machdep_calls mach_##name __machine_desc = |
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#define machine_is(name) \ |
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({ \ |
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extern struct machdep_calls mach_##name \ |
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__attribute__((weak)); \ |
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machine_id == &mach_##name; \ |
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}) |
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extern void probe_machine(void); |
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#ifdef CONFIG_PPC_PMAC |
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/* |
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* Power macintoshes have either a CUDA, PMU or SMU controlling |
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* system reset, power, NVRAM, RTC. |
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*/ |
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typedef enum sys_ctrler_kind { |
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SYS_CTRLER_UNKNOWN = 0, |
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SYS_CTRLER_CUDA = 1, |
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SYS_CTRLER_PMU = 2, |
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SYS_CTRLER_SMU = 3, |
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} sys_ctrler_t; |
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extern sys_ctrler_t sys_ctrler; |
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#endif /* CONFIG_PPC_PMAC */ |
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static inline void log_error(char *buf, unsigned int err_type, int fatal) |
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{ |
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if (ppc_md.log_error) |
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ppc_md.log_error(buf, err_type, fatal); |
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} |
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#define __define_machine_initcall(mach, fn, id) \ |
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static int __init __machine_initcall_##mach##_##fn(void) { \ |
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if (machine_is(mach)) return fn(); \ |
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return 0; \ |
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} \ |
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__define_initcall(__machine_initcall_##mach##_##fn, id); |
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#define machine_early_initcall(mach, fn) __define_machine_initcall(mach, fn, early) |
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#define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1) |
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#define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s) |
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#define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2) |
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#define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s) |
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#define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3) |
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#define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s) |
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#define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4) |
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#define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s) |
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#define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5) |
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#define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s) |
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#define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs) |
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#define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6) |
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#define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s) |
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#define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7) |
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#define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s) |
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#endif /* __KERNEL__ */ |
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#endif /* _ASM_POWERPC_MACHDEP_H */
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