gsc.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:2k
- #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 */