arch/powerpc/include/asm/hydra.h
Source file repositories/reference/linux-study-clean/arch/powerpc/include/asm/hydra.h
File Facts
- System
- Linux kernel
- Corpus path
arch/powerpc/include/asm/hydra.h- Extension
.h- Size
- 2948 bytes
- Lines
- 100
- Domain
- Architecture Layer
- Bucket
- arch/powerpc
- 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.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
struct Hydra
Annotated Snippet
struct Hydra {
/* DBDMA Controller Register Space */
char Pad1[0x30];
u_int CachePD;
u_int IDs;
u_int Feature_Control;
char Pad2[0x7fc4];
/* DBDMA Channel Register Space */
char SCSI_DMA[0x100];
char Pad3[0x300];
char SCCA_Tx_DMA[0x100];
char SCCA_Rx_DMA[0x100];
char SCCB_Tx_DMA[0x100];
char SCCB_Rx_DMA[0x100];
char Pad4[0x7800];
/* Device Register Space */
char SCSI[0x1000];
char ADB[0x1000];
char SCC_Legacy[0x1000];
char SCC[0x1000];
char Pad9[0x2000];
char VIA[0x2000];
char Pad10[0x28000];
char OpenPIC[0x40000];
};
extern volatile struct Hydra __iomem *Hydra;
/*
* Feature Control Register
*/
#define HYDRA_FC_SCC_CELL_EN 0x00000001 /* Enable SCC Clock */
#define HYDRA_FC_SCSI_CELL_EN 0x00000002 /* Enable SCSI Clock */
#define HYDRA_FC_SCCA_ENABLE 0x00000004 /* Enable SCC A Lines */
#define HYDRA_FC_SCCB_ENABLE 0x00000008 /* Enable SCC B Lines */
#define HYDRA_FC_ARB_BYPASS 0x00000010 /* Bypass Internal Arbiter */
#define HYDRA_FC_RESET_SCC 0x00000020 /* Reset SCC */
#define HYDRA_FC_MPIC_ENABLE 0x00000040 /* Enable OpenPIC */
#define HYDRA_FC_SLOW_SCC_PCLK 0x00000080 /* 1=15.6672, 0=25 MHz */
#define HYDRA_FC_MPIC_IS_MASTER 0x00000100 /* OpenPIC Master Mode */
/*
* OpenPIC Interrupt Sources
*/
#define HYDRA_INT_SIO 0
#define HYDRA_INT_SCSI_DMA 1
#define HYDRA_INT_SCCA_TX_DMA 2
#define HYDRA_INT_SCCA_RX_DMA 3
#define HYDRA_INT_SCCB_TX_DMA 4
#define HYDRA_INT_SCCB_RX_DMA 5
#define HYDRA_INT_SCSI 6
#define HYDRA_INT_SCCA 7
#define HYDRA_INT_SCCB 8
#define HYDRA_INT_VIA 9
#define HYDRA_INT_ADB 10
#define HYDRA_INT_ADB_NMI 11
#define HYDRA_INT_EXT1 12 /* PCI IRQW */
#define HYDRA_INT_EXT2 13 /* PCI IRQX */
#define HYDRA_INT_EXT3 14 /* PCI IRQY */
#define HYDRA_INT_EXT4 15 /* PCI IRQZ */
#define HYDRA_INT_EXT5 16 /* IDE Primary/Secondary */
#define HYDRA_INT_EXT6 17 /* IDE Secondary */
#define HYDRA_INT_EXT7 18 /* Power Off Request */
#define HYDRA_INT_SPARE 19
#endif /* __KERNEL__ */
#endif /* _ASMPPC_HYDRA_H */
Annotation
- Detected declarations: `struct Hydra`.
- Atlas domain: Architecture Layer / arch/powerpc.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.