linux/include/asm-powerpc/machdep.h

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#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 ssize,
int local);
long (*hpte_updatepp)(unsigned long slot,
unsigned long newpp,
unsigned long va,
int psize, int ssize,
int local);
void (*hpte_updateboltedpp)(unsigned long newpp,
unsigned long ea,
int psize, int ssize);
long (*hpte_insert)(unsigned long hpte_group,
unsigned long va,
unsigned long prpn,
unsigned long rflags,
unsigned long vflags,
int psize, int ssize);
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);
[POWERPC] Allow hooking of PCI MMIO & PIO accessors on 64 bits This patch reworks the way iSeries hooks on PCI IO operations (both MMIO and PIO) and provides a generic way for other platforms to do so (we have need to do that for various other platforms). While reworking the IO ops, I ended up doing some spring cleaning in io.h and eeh.h which I might want to split into 2 or 3 patches (among others, eeh.h had a lot of useless stuff in it). A side effect is that EEH for PIO should work now (it used to pass IO ports down to the eeh address check functions which is bogus). Also, new are MMIO "repeat" ops, which other archs like ARM already had, and that we have too now: readsb, readsw, readsl, writesb, writesw, writesl. In the long run, I might also make EEH use the hooks instead of wrapping at the toplevel, which would make things even cleaner and relegate EEH completely in platforms/iseries, but we have to measure the performance impact there (though it's really only on MMIO reads) Since I also need to hook on ioremap, I shuffled the functions a bit there. I introduced ioremap_flags() to use by drivers who want to pass explicit flags to ioremap (and it can be hooked). The old __ioremap() is still there as a low level and cannot be hooked, thus drivers who use it should migrate unless they know they want the low level version. The patch "arch provides generic iomap missing accessors" (should be number 4 in this series) is a pre-requisite to provide full iomap API support with this patch. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-11 06:25:10 +00:00
void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
[POWERPC] Allow hooking of PCI MMIO & PIO accessors on 64 bits This patch reworks the way iSeries hooks on PCI IO operations (both MMIO and PIO) and provides a generic way for other platforms to do so (we have need to do that for various other platforms). While reworking the IO ops, I ended up doing some spring cleaning in io.h and eeh.h which I might want to split into 2 or 3 patches (among others, eeh.h had a lot of useless stuff in it). A side effect is that EEH for PIO should work now (it used to pass IO ports down to the eeh address check functions which is bogus). Also, new are MMIO "repeat" ops, which other archs like ARM already had, and that we have too now: readsb, readsw, readsl, writesb, writesw, writesl. In the long run, I might also make EEH use the hooks instead of wrapping at the toplevel, which would make things even cleaner and relegate EEH completely in platforms/iseries, but we have to measure the performance impact there (though it's really only on MMIO reads) Since I also need to hook on ioremap, I shuffled the functions a bit there. I introduced ioremap_flags() to use by drivers who want to pass explicit flags to ioremap (and it can be hooked). The old __ioremap() is still there as a low level and cannot be hooked, thus drivers who use it should migrate unless they know they want the low level version. The patch "arch provides generic iomap missing accessors" (should be number 4 in this series) is a pre-requisite to provide full iomap API support with this patch. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-11 06:25:10 +00:00
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); /* Optional, may be NULL */
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);
ppc64: Set up PCI tree from Open Firmware device tree This adds code which gives us the option on ppc64 of instantiating the PCI tree (the tree of pci_bus and pci_dev structs) from the Open Firmware device tree rather than by probing PCI configuration space. The OF device tree has a node for each PCI device and bridge in the system, with properties that tell us what addresses the firmware has configured for them and other details. There are a couple of reasons why this is needed. First, on systems with a hypervisor, there is a PCI-PCI bridge per slot under the PCI host bridges. These PCI-PCI bridges have special isolation features for virtualization. We can't write to their config space, and we are not supposed to be reading their config space either. The firmware tells us about the address ranges that they pass in the OF device tree. Secondly, on powermacs, the interrupt controller is in a PCI device that may be behind a PCI-PCI bridge. If we happened to take an interrupt just at the point when the device or a bridge on the path to it was disabled for probing, we would crash when we try to access the interrupt controller. I have implemented a platform-specific function which is called for each PCI bridge (host or PCI-PCI) to say whether the code should look in the device tree or use normal PCI probing for the devices under that bridge. On pSeries machines we use the device tree if we're running under a hypervisor, otherwise we use normal probing. On powermacs we use normal probing for the AGP bridge, since the device for the AGP bridge itself isn't shown in the device tree (at least on my G5), and the device tree for everything else. This has been tested on a dual G5 powermac, a partition on a POWER5 machine (running under the hypervisor), and a legacy iSeries partition. Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-09-12 07:17:36 +00:00
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)(struct pci_controller *, 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 */