arch/mips/include/asm/sn/sn0/kldir.h

Source file repositories/reference/linux-study-clean/arch/mips/include/asm/sn/sn0/kldir.h

File Facts

System: Linux kernel
Corpus path: arch/mips/include/asm/sn/sn0/kldir.h
Extension: .h
Size: 7005 bytes
Lines: 187
Domain: Architecture Layer
Bucket: arch/mips
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.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef _ASM_SN_SN0_KLDIR_H
#define _ASM_SN_SN0_KLDIR_H


/*
 * The kldir memory area resides at a fixed place in each node's memory and
 * provides pointers to most other IP27 memory areas.  This allows us to
 * resize and/or relocate memory areas at a later time without breaking all
 * firmware and kernels that use them.	Indices in the array are
 * permanently dedicated to areas listed below.	 Some memory areas (marked
 * below) reside at a permanently fixed location, but are included in the
 * directory for completeness.
 */

/*
 * The upper portion of the memory map applies during boot
 * only and is overwritten by IRIX/SYMMON.
 *
 *				      MEMORY MAP PER NODE
 *
 * 0x2000000 (32M)	   +-----------------------------------------+
 *			   |	  IO6 BUFFERS FOR FLASH ENET IOC3    |
 * 0x1F80000 (31.5M)	   +-----------------------------------------+
 *			   |	  IO6 TEXT/DATA/BSS/stack	     |
 * 0x1C00000 (30M)	   +-----------------------------------------+
 *			   |	  IO6 PROM DEBUG TEXT/DATA/BSS/stack |
 * 0x0800000 (28M)	   +-----------------------------------------+
 *			   |	  IP27 PROM TEXT/DATA/BSS/stack	     |
 * 0x1B00000 (27M)	   +-----------------------------------------+
 *			   |	  IP27 CFG			     |
 * 0x1A00000 (26M)	   +-----------------------------------------+
 *			   |	  Graphics PROM			     |
 * 0x1800000 (24M)	   +-----------------------------------------+
 *			   |	  3rd Party PROM drivers	     |
 * 0x1600000 (22M)	   +-----------------------------------------+
 *			   |					     |
 *			   |	  Free				     |
 *			   |					     |
 *			   +-----------------------------------------+
 *			   |	  UNIX DEBUG Version		     |
 * 0x190000 (2M--)	   +-----------------------------------------+
 *			   |	  SYMMON			     |
 *			   |	  (For UNIX Debug only)		     |
 * 0x34000 (208K)	   +-----------------------------------------+
 *			   |	  SYMMON STACK [NUM_CPU_PER_NODE]    |
 *			   |	  (For UNIX Debug only)		     |
 * 0x25000 (148K)	   +-----------------------------------------+
 *			   |	  KLCONFIG - II (temp)		     |
 *			   |					     |
 *			   |	----------------------------	     |
 *			   |					     |
 *			   |	  UNIX NON-DEBUG Version	     |
 * 0x19000 (100K)	   +-----------------------------------------+
 *
 *
 * The lower portion of the memory map contains information that is
 * permanent and is used by the IP27PROM, IO6PROM and IRIX.
 *
 * 0x19000 (100K)	   +-----------------------------------------+
 *			   |					     |
 *			   |	  PI Error Spools (32K)		     |
 *			   |					     |
 * 0x12000 (72K)	   +-----------------------------------------+
 *			   |	  Unused			     |
 * 0x11c00 (71K)	   +-----------------------------------------+
 *			   |	  CPU 1 NMI Eframe area		     |
 * 0x11a00 (70.5K)	   +-----------------------------------------+
 *			   |	  CPU 0 NMI Eframe area		     |
 * 0x11800 (70K)	   +-----------------------------------------+
 *			   |	  CPU 1 NMI Register save area	     |
 * 0x11600 (69.5K)	   +-----------------------------------------+
 *			   |	  CPU 0 NMI Register save area	     |
 * 0x11400 (69K)	   +-----------------------------------------+
 *			   |	  GDA (1k)			     |
 * 0x11000 (68K)	   +-----------------------------------------+
 *			   |	  Early cache Exception stack	     |
 *			   |		 and/or			     |
 *			   |	  kernel/io6prom nmi registers	     |
 * 0x10800  (66k)	   +-----------------------------------------+
 *			   |	  cache error eframe		     |
 * 0x10400 (65K)	   +-----------------------------------------+
 *			   |	  Exception Handlers (UALIAS copy)   |
 * 0x10000 (64K)	   +-----------------------------------------+
 *			   |					     |
 *			   |					     |
 *			   |	  KLCONFIG - I (permanent) (48K)     |
 *			   |					     |
 *			   |					     |
 *			   |					     |
 * 0x4000 (16K)		   +-----------------------------------------+

Annotation

Atlas domain: Architecture Layer / arch/mips.
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.