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#ifndef ASM_PARISC_GSC_H
#define ASM_PARISC_GSC_H
#ifdef __KERNEL__
#include <linux/types.h>
#include <asm/hardware.h> /* for struct hp_device */
/*
* The convention used for inb/outb etc. is that names starting with
* two underscores are the inline versions, names starting with a
* single underscore are proper functions, and names starting with a
* letter are macros that map in some way to inline or proper function
* versions. Not all that pretty, but before you change it, be sure
* to convince yourself that it won't break anything (in particular
* module support).
*/
extern u8 _gsc_readb(void *);
extern u16 _gsc_readw(void *);
extern u32 _gsc_readl(void *);
extern u64 _gsc_readq(void *);
extern void _gsc_writeb(u8, void *);
extern void _gsc_writew(u16,void *);
extern void _gsc_writel(u32,void *);
extern void _gsc_writeq(u64,void *);
#define gsc_readb(a) _gsc_readb((void *)(a))
#define gsc_readw(a) _gsc_readw((void *)(a))
#define gsc_readl(a) _gsc_readl((void *)(a))
#define gsc_readq(a) _gsc_readq((void *)(a))
#define gsc_writeb(v,a) _gsc_writeb((v),(void *)(a))
#define gsc_writew(v,a) _gsc_writew((v),(void *)(a))
#define gsc_writel(v,a) _gsc_writel((v),(void *)(a))
#define gsc_writeq(v,a) _gsc_writeq((v),(void *)(a))
struct gsc_dev {
struct gsc_bus *bus; /* bus this device is on */
struct gsc_dev *next; /* chain of all devices */
struct gsc_dev *next_bus; /* chain of all devices on a bus */
struct gsc_dev *next_submod; /* chain of all devices on a module */
unsigned irq; /* irq generated by this device */
void *hpa; /* hard physical address */
u16 hversion;
u8 spa; /* SPA requirements */
u8 type;
u32 sversion;
};
struct gsc_irq {
unsigned long txn_addr; /* IRQ "target" */
int txn_data; /* HW "IRQ" */
int irq; /* virtual IRQ */
};
/* PA I/O Architected devices support at least 5 bits in the EIM register. */
#define GSC_EIM_WIDTH 5
extern int gsc_alloc_irq(struct gsc_irq *dev); /* dev needs an irq */
extern int gsc_claim_irq(struct gsc_irq *dev, int irq); /* dev needs this irq */
struct gsc_bus {
void *hpa; /* HPA of device 0, function 0 of this bus */
};
/*
* There is one gsc_dev structure for each slot-number/function-number
* combination:
*/
struct gsc_dev *gsc_find_device(u16 hversion, struct gsc_dev *from);
extern void probe_serial_gsc(void);
/* returns a virtual irq for device at dev->hpa (works for all LASI/ASP/WAX) */
extern int busdevice_alloc_irq( struct hp_device *dev );
#endif /* __KERNEL__ */
#endif /* LINUX_GSC_H */
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