![Michael Ellerman](/assets/img/avatar_default.png)
This provides the architecture specific hooks to support MSI on powerpc. We implement the newly added arch_setup_msi_irqs() and arch_teardown_msi_irqs(), and then delegate to ppc_md routines. Platforms that don't implement MSI will leave the ppc_md calls blank, arch_msi_check_device() will detect this and return ENOSYS. Drivers should detect this error and continue to use LSI. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
331 lines
9.5 KiB
C
331 lines
9.5 KiB
C
#ifndef _ASM_POWERPC_MACHDEP_H
|
|
#define _ASM_POWERPC_MACHDEP_H
|
|
#ifdef __KERNEL__
|
|
|
|
/*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/seq_file.h>
|
|
#include <linux/init.h>
|
|
#include <linux/dma-mapping.h>
|
|
|
|
#include <asm/setup.h>
|
|
|
|
/* We export this macro for external modules like Alsa to know if
|
|
* ppc_md.feature_call is implemented or not
|
|
*/
|
|
#define CONFIG_PPC_HAS_FEATURE_CALLS
|
|
|
|
struct pt_regs;
|
|
struct pci_bus;
|
|
struct device_node;
|
|
struct iommu_table;
|
|
struct rtc_time;
|
|
struct file;
|
|
struct pci_controller;
|
|
#ifdef CONFIG_KEXEC
|
|
struct kimage;
|
|
#endif
|
|
|
|
#ifdef CONFIG_SMP
|
|
struct smp_ops_t {
|
|
void (*message_pass)(int target, int msg);
|
|
int (*probe)(void);
|
|
void (*kick_cpu)(int nr);
|
|
void (*setup_cpu)(int nr);
|
|
void (*take_timebase)(void);
|
|
void (*give_timebase)(void);
|
|
int (*cpu_enable)(unsigned int nr);
|
|
int (*cpu_disable)(void);
|
|
void (*cpu_die)(unsigned int nr);
|
|
int (*cpu_bootable)(unsigned int nr);
|
|
};
|
|
#endif
|
|
|
|
struct machdep_calls {
|
|
char *name;
|
|
#ifdef CONFIG_PPC64
|
|
void (*hpte_invalidate)(unsigned long slot,
|
|
unsigned long va,
|
|
int psize,
|
|
int local);
|
|
long (*hpte_updatepp)(unsigned long slot,
|
|
unsigned long newpp,
|
|
unsigned long va,
|
|
int pize,
|
|
int local);
|
|
void (*hpte_updateboltedpp)(unsigned long newpp,
|
|
unsigned long ea,
|
|
int psize);
|
|
long (*hpte_insert)(unsigned long hpte_group,
|
|
unsigned long va,
|
|
unsigned long prpn,
|
|
unsigned long rflags,
|
|
unsigned long vflags,
|
|
int psize);
|
|
long (*hpte_remove)(unsigned long hpte_group);
|
|
void (*flush_hash_range)(unsigned long number, int local);
|
|
|
|
/* special for kexec, to be called in real mode, linar mapping is
|
|
* destroyed as well */
|
|
void (*hpte_clear_all)(void);
|
|
|
|
void (*tce_build)(struct iommu_table * tbl,
|
|
long index,
|
|
long npages,
|
|
unsigned long uaddr,
|
|
enum dma_data_direction direction);
|
|
void (*tce_free)(struct iommu_table *tbl,
|
|
long index,
|
|
long npages);
|
|
unsigned long (*tce_get)(struct iommu_table *tbl,
|
|
long index);
|
|
void (*tce_flush)(struct iommu_table *tbl);
|
|
void (*pci_dma_dev_setup)(struct pci_dev *dev);
|
|
void (*pci_dma_bus_setup)(struct pci_bus *bus);
|
|
|
|
void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
|
|
unsigned long flags);
|
|
void (*iounmap)(volatile void __iomem *token);
|
|
|
|
#ifdef CONFIG_PM
|
|
void (*iommu_save)(void);
|
|
void (*iommu_restore)(void);
|
|
#endif
|
|
#endif /* CONFIG_PPC64 */
|
|
|
|
int (*probe)(void);
|
|
void (*setup_arch)(void);
|
|
void (*init_early)(void);
|
|
/* Optional, may be NULL. */
|
|
void (*show_cpuinfo)(struct seq_file *m);
|
|
void (*show_percpuinfo)(struct seq_file *m, int i);
|
|
|
|
void (*init_IRQ)(void);
|
|
unsigned int (*get_irq)(void);
|
|
#ifdef CONFIG_KEXEC
|
|
void (*kexec_cpu_down)(int crash_shutdown, int secondary);
|
|
#endif
|
|
|
|
/* PCI stuff */
|
|
/* Called after scanning the bus, before allocating resources */
|
|
void (*pcibios_fixup)(void);
|
|
int (*pci_probe_mode)(struct pci_bus *);
|
|
void (*pci_irq_fixup)(struct pci_dev *dev);
|
|
|
|
/* To setup PHBs when using automatic OF platform driver for PCI */
|
|
int (*pci_setup_phb)(struct pci_controller *host);
|
|
|
|
#ifdef CONFIG_PCI_MSI
|
|
int (*msi_check_device)(struct pci_dev* dev,
|
|
int nvec, int type);
|
|
int (*setup_msi_irqs)(struct pci_dev *dev,
|
|
int nvec, int type);
|
|
void (*teardown_msi_irqs)(struct pci_dev *dev);
|
|
#endif
|
|
|
|
void (*restart)(char *cmd);
|
|
void (*power_off)(void);
|
|
void (*halt)(void);
|
|
void (*panic)(char *str);
|
|
void (*cpu_die)(void);
|
|
|
|
long (*time_init)(void); /* Optional, may be NULL */
|
|
|
|
int (*set_rtc_time)(struct rtc_time *);
|
|
void (*get_rtc_time)(struct rtc_time *);
|
|
unsigned long (*get_boot_time)(void);
|
|
unsigned char (*rtc_read_val)(int addr);
|
|
void (*rtc_write_val)(int addr, unsigned char val);
|
|
|
|
void (*calibrate_decr)(void);
|
|
|
|
void (*progress)(char *, unsigned short);
|
|
|
|
/* Interface for platform error logging */
|
|
void (*log_error)(char *buf, unsigned int err_type, int fatal);
|
|
|
|
unsigned char (*nvram_read_val)(int addr);
|
|
void (*nvram_write_val)(int addr, unsigned char val);
|
|
ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
|
|
ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
|
|
ssize_t (*nvram_size)(void);
|
|
void (*nvram_sync)(void);
|
|
|
|
/* Exception handlers */
|
|
int (*system_reset_exception)(struct pt_regs *regs);
|
|
int (*machine_check_exception)(struct pt_regs *regs);
|
|
|
|
/* Motherboard/chipset features. This is a kind of general purpose
|
|
* hook used to control some machine specific features (like reset
|
|
* lines, chip power control, etc...).
|
|
*/
|
|
long (*feature_call)(unsigned int feature, ...);
|
|
|
|
/* Get legacy PCI/IDE interrupt mapping */
|
|
int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
|
|
|
|
/* Get access protection for /dev/mem */
|
|
pgprot_t (*phys_mem_access_prot)(struct file *file,
|
|
unsigned long pfn,
|
|
unsigned long size,
|
|
pgprot_t vma_prot);
|
|
|
|
/* Idle loop for this platform, leave empty for default idle loop */
|
|
void (*idle_loop)(void);
|
|
|
|
/*
|
|
* Function for waiting for work with reduced power in idle loop;
|
|
* called with interrupts disabled.
|
|
*/
|
|
void (*power_save)(void);
|
|
|
|
/* Function to enable performance monitor counters for this
|
|
platform, called once per cpu. */
|
|
void (*enable_pmcs)(void);
|
|
|
|
/* Set DABR for this platform, leave empty for default implemenation */
|
|
int (*set_dabr)(unsigned long dabr);
|
|
|
|
#ifdef CONFIG_PPC32 /* XXX for now */
|
|
/* A general init function, called by ppc_init in init/main.c.
|
|
May be NULL. */
|
|
void (*init)(void);
|
|
|
|
void (*setup_io_mappings)(void);
|
|
|
|
void (*early_serial_map)(void);
|
|
void (*kgdb_map_scc)(void);
|
|
|
|
/*
|
|
* optional PCI "hooks"
|
|
*/
|
|
|
|
/* Called after PPC generic resource fixup to perform
|
|
machine specific fixups */
|
|
void (*pcibios_fixup_resources)(struct pci_dev *);
|
|
|
|
/* Called for each PCI bus in the system when it's probed */
|
|
void (*pcibios_fixup_bus)(struct pci_bus *);
|
|
|
|
/* Called when pci_enable_device() is called (initial=0) or
|
|
* when a device with no assigned resource is found (initial=1).
|
|
* Returns 0 to allow assignment/enabling of the device. */
|
|
int (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
|
|
|
|
/* Called in indirect_* to avoid touching devices */
|
|
int (*pci_exclude_device)(unsigned char, unsigned char);
|
|
|
|
/* Called at then very end of pcibios_init() */
|
|
void (*pcibios_after_init)(void);
|
|
|
|
#endif /* CONFIG_PPC32 */
|
|
|
|
/* Called to shutdown machine specific hardware not already controlled
|
|
* by other drivers.
|
|
*/
|
|
void (*machine_shutdown)(void);
|
|
|
|
#ifdef CONFIG_KEXEC
|
|
/* Called to do the minimal shutdown needed to run a kexec'd kernel
|
|
* to run successfully.
|
|
* XXX Should we move this one out of kexec scope?
|
|
*/
|
|
void (*machine_crash_shutdown)(struct pt_regs *regs);
|
|
|
|
/* Called to do what every setup is needed on image and the
|
|
* reboot code buffer. Returns 0 on success.
|
|
* Provide your own (maybe dummy) implementation if your platform
|
|
* claims to support kexec.
|
|
*/
|
|
int (*machine_kexec_prepare)(struct kimage *image);
|
|
|
|
/* Called to handle any machine specific cleanup on image */
|
|
void (*machine_kexec_cleanup)(struct kimage *image);
|
|
|
|
/* Called to perform the _real_ kexec.
|
|
* Do NOT allocate memory or fail here. We are past the point of
|
|
* no return.
|
|
*/
|
|
void (*machine_kexec)(struct kimage *image);
|
|
#endif /* CONFIG_KEXEC */
|
|
};
|
|
|
|
extern void power4_idle(void);
|
|
extern void power4_cpu_offline_powersave(void);
|
|
extern void ppc6xx_idle(void);
|
|
|
|
/*
|
|
* ppc_md contains a copy of the machine description structure for the
|
|
* current platform. machine_id contains the initial address where the
|
|
* description was found during boot.
|
|
*/
|
|
extern struct machdep_calls ppc_md;
|
|
extern struct machdep_calls *machine_id;
|
|
|
|
#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
|
|
|
|
#define define_machine(name) \
|
|
extern struct machdep_calls mach_##name; \
|
|
EXPORT_SYMBOL(mach_##name); \
|
|
struct machdep_calls mach_##name __machine_desc =
|
|
|
|
#define machine_is(name) \
|
|
({ \
|
|
extern struct machdep_calls mach_##name \
|
|
__attribute__((weak)); \
|
|
machine_id == &mach_##name; \
|
|
})
|
|
|
|
extern void probe_machine(void);
|
|
|
|
extern char cmd_line[COMMAND_LINE_SIZE];
|
|
|
|
#ifdef CONFIG_PPC_PMAC
|
|
/*
|
|
* Power macintoshes have either a CUDA, PMU or SMU controlling
|
|
* system reset, power, NVRAM, RTC.
|
|
*/
|
|
typedef enum sys_ctrler_kind {
|
|
SYS_CTRLER_UNKNOWN = 0,
|
|
SYS_CTRLER_CUDA = 1,
|
|
SYS_CTRLER_PMU = 2,
|
|
SYS_CTRLER_SMU = 3,
|
|
} sys_ctrler_t;
|
|
extern sys_ctrler_t sys_ctrler;
|
|
|
|
#endif /* CONFIG_PPC_PMAC */
|
|
|
|
extern void setup_pci_ptrs(void);
|
|
|
|
#ifdef CONFIG_SMP
|
|
/* Poor default implementations */
|
|
extern void __devinit smp_generic_give_timebase(void);
|
|
extern void __devinit smp_generic_take_timebase(void);
|
|
#endif /* CONFIG_SMP */
|
|
|
|
|
|
/* Functions to produce codes on the leds.
|
|
* The SRC code should be unique for the message category and should
|
|
* be limited to the lower 24 bits (the upper 8 are set by these funcs),
|
|
* and (for boot & dump) should be sorted numerically in the order
|
|
* the events occur.
|
|
*/
|
|
/* Print a boot progress message. */
|
|
void ppc64_boot_msg(unsigned int src, const char *msg);
|
|
/* Print a termination message (print only -- does not stop the kernel) */
|
|
void ppc64_terminate_msg(unsigned int src, const char *msg);
|
|
|
|
static inline void log_error(char *buf, unsigned int err_type, int fatal)
|
|
{
|
|
if (ppc_md.log_error)
|
|
ppc_md.log_error(buf, err_type, fatal);
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ASM_POWERPC_MACHDEP_H */
|