arch/sparc/kernel/psycho_common.h

Source file repositories/reference/linux-study-clean/arch/sparc/kernel/psycho_common.h

File Facts

System
Linux kernel
Corpus path
arch/sparc/kernel/psycho_common.h
Extension
.h
Size
1463 bytes
Lines
50
Domain
Architecture Layer
Bucket
arch/sparc
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _PSYCHO_COMMON_H
#define _PSYCHO_COMMON_H

/* U2P Programmer's Manual, page 13-55, configuration space
 * address format:
 * 
 *  32             24 23 16 15    11 10       8 7   2  1 0
 * ---------------------------------------------------------
 * |0 0 0 0 0 0 0 0 1| bus | device | function | reg | 0 0 |
 * ---------------------------------------------------------
 */
#define PSYCHO_CONFIG_BASE(PBM)	\
	((PBM)->config_space | (1UL << 24))
#define PSYCHO_CONFIG_ENCODE(BUS, DEVFN, REG)	\
	(((unsigned long)(BUS)   << 16) |	\
	 ((unsigned long)(DEVFN) << 8)  |	\
	 ((unsigned long)(REG)))

static inline void *psycho_pci_config_mkaddr(struct pci_pbm_info *pbm,
					     unsigned char bus,
					     unsigned int devfn,
					     int where)
{
	return (void *)
		(PSYCHO_CONFIG_BASE(pbm) |
		 PSYCHO_CONFIG_ENCODE(bus, devfn, where));
}

enum psycho_error_type {
	UE_ERR, CE_ERR, PCI_ERR
};

void psycho_check_iommu_error(struct pci_pbm_info *pbm,
			      unsigned long afsr,
			      unsigned long afar,
			      enum psycho_error_type type);

irqreturn_t psycho_pcierr_intr(int irq, void *dev_id);

int psycho_iommu_init(struct pci_pbm_info *pbm, int tsbsize,
		      u32 dvma_offset, u32 dma_mask,
		      unsigned long write_complete_offset);

void psycho_pbm_init_common(struct pci_pbm_info *pbm,
			    struct platform_device *op,
			    const char *chip_name, int chip_type);

#endif /* _PSYCHO_COMMON_H */

Annotation

Implementation Notes