710 lines
17 KiB
C
710 lines
17 KiB
C
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/*
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* arch/s390/hypfs/hypfs_diag.c
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* Hypervisor filesystem for Linux on s390. Diag 204 and 224
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* implementation.
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*
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* Copyright IBM Corp. 2006, 2008
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* Author(s): Michael Holzheu <holzheu@de.ibm.com>
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*/
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#define KMSG_COMPONENT "hypfs"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/gfp.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/vmalloc.h>
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#include <asm/ebcdic.h>
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#include "hypfs.h"
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#define LPAR_NAME_LEN 8 /* lpar name len in diag 204 data */
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#define CPU_NAME_LEN 16 /* type name len of cpus in diag224 name table */
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#define TMP_SIZE 64 /* size of temporary buffers */
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/* diag 204 subcodes */
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enum diag204_sc {
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SUBC_STIB4 = 4,
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SUBC_RSI = 5,
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SUBC_STIB6 = 6,
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SUBC_STIB7 = 7
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};
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/* The two available diag 204 data formats */
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enum diag204_format {
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INFO_SIMPLE = 0,
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INFO_EXT = 0x00010000
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};
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/* bit is set in flags, when physical cpu info is included in diag 204 data */
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#define LPAR_PHYS_FLG 0x80
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static char *diag224_cpu_names; /* diag 224 name table */
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static enum diag204_sc diag204_store_sc; /* used subcode for store */
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static enum diag204_format diag204_info_type; /* used diag 204 data format */
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static void *diag204_buf; /* 4K aligned buffer for diag204 data */
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static void *diag204_buf_vmalloc; /* vmalloc pointer for diag204 data */
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static int diag204_buf_pages; /* number of pages for diag204 data */
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/*
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* DIAG 204 data structures and member access functions.
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*
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* Since we have two different diag 204 data formats for old and new s390
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* machines, we do not access the structs directly, but use getter functions for
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* each struct member instead. This should make the code more readable.
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*/
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/* Time information block */
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struct info_blk_hdr {
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__u8 npar;
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__u8 flags;
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__u16 tslice;
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__u16 phys_cpus;
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__u16 this_part;
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__u64 curtod;
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} __attribute__ ((packed));
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struct x_info_blk_hdr {
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__u8 npar;
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__u8 flags;
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__u16 tslice;
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__u16 phys_cpus;
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__u16 this_part;
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__u64 curtod1;
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__u64 curtod2;
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char reserved[40];
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} __attribute__ ((packed));
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static inline int info_blk_hdr__size(enum diag204_format type)
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{
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if (type == INFO_SIMPLE)
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return sizeof(struct info_blk_hdr);
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else /* INFO_EXT */
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return sizeof(struct x_info_blk_hdr);
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}
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static inline __u8 info_blk_hdr__npar(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct info_blk_hdr *)hdr)->npar;
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else /* INFO_EXT */
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return ((struct x_info_blk_hdr *)hdr)->npar;
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}
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static inline __u8 info_blk_hdr__flags(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct info_blk_hdr *)hdr)->flags;
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else /* INFO_EXT */
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return ((struct x_info_blk_hdr *)hdr)->flags;
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}
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static inline __u16 info_blk_hdr__pcpus(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct info_blk_hdr *)hdr)->phys_cpus;
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else /* INFO_EXT */
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return ((struct x_info_blk_hdr *)hdr)->phys_cpus;
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}
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/* Partition header */
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struct part_hdr {
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__u8 pn;
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__u8 cpus;
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char reserved[6];
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char part_name[LPAR_NAME_LEN];
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} __attribute__ ((packed));
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struct x_part_hdr {
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__u8 pn;
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__u8 cpus;
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__u8 rcpus;
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__u8 pflag;
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__u32 mlu;
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char part_name[LPAR_NAME_LEN];
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char lpc_name[8];
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char os_name[8];
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__u64 online_cs;
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__u64 online_es;
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__u8 upid;
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char reserved1[3];
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__u32 group_mlu;
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char group_name[8];
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char reserved2[32];
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} __attribute__ ((packed));
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static inline int part_hdr__size(enum diag204_format type)
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{
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if (type == INFO_SIMPLE)
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return sizeof(struct part_hdr);
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else /* INFO_EXT */
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return sizeof(struct x_part_hdr);
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}
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static inline __u8 part_hdr__rcpus(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct part_hdr *)hdr)->cpus;
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else /* INFO_EXT */
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return ((struct x_part_hdr *)hdr)->rcpus;
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}
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static inline void part_hdr__part_name(enum diag204_format type, void *hdr,
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char *name)
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{
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if (type == INFO_SIMPLE)
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memcpy(name, ((struct part_hdr *)hdr)->part_name,
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LPAR_NAME_LEN);
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else /* INFO_EXT */
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memcpy(name, ((struct x_part_hdr *)hdr)->part_name,
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LPAR_NAME_LEN);
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EBCASC(name, LPAR_NAME_LEN);
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name[LPAR_NAME_LEN] = 0;
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strstrip(name);
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}
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struct cpu_info {
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__u16 cpu_addr;
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char reserved1[2];
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__u8 ctidx;
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__u8 cflag;
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__u16 weight;
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__u64 acc_time;
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__u64 lp_time;
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} __attribute__ ((packed));
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struct x_cpu_info {
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__u16 cpu_addr;
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char reserved1[2];
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__u8 ctidx;
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__u8 cflag;
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__u16 weight;
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__u64 acc_time;
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__u64 lp_time;
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__u16 min_weight;
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__u16 cur_weight;
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__u16 max_weight;
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char reseved2[2];
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__u64 online_time;
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__u64 wait_time;
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__u32 pma_weight;
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__u32 polar_weight;
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char reserved3[40];
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} __attribute__ ((packed));
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/* CPU info block */
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static inline int cpu_info__size(enum diag204_format type)
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{
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if (type == INFO_SIMPLE)
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return sizeof(struct cpu_info);
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else /* INFO_EXT */
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return sizeof(struct x_cpu_info);
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}
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static inline __u8 cpu_info__ctidx(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct cpu_info *)hdr)->ctidx;
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else /* INFO_EXT */
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return ((struct x_cpu_info *)hdr)->ctidx;
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}
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static inline __u16 cpu_info__cpu_addr(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct cpu_info *)hdr)->cpu_addr;
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else /* INFO_EXT */
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return ((struct x_cpu_info *)hdr)->cpu_addr;
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}
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static inline __u64 cpu_info__acc_time(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct cpu_info *)hdr)->acc_time;
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else /* INFO_EXT */
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return ((struct x_cpu_info *)hdr)->acc_time;
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}
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static inline __u64 cpu_info__lp_time(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct cpu_info *)hdr)->lp_time;
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else /* INFO_EXT */
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return ((struct x_cpu_info *)hdr)->lp_time;
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}
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static inline __u64 cpu_info__online_time(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return 0; /* online_time not available in simple info */
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else /* INFO_EXT */
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return ((struct x_cpu_info *)hdr)->online_time;
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}
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/* Physical header */
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struct phys_hdr {
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char reserved1[1];
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__u8 cpus;
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char reserved2[6];
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char mgm_name[8];
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} __attribute__ ((packed));
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struct x_phys_hdr {
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char reserved1[1];
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__u8 cpus;
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char reserved2[6];
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char mgm_name[8];
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char reserved3[80];
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} __attribute__ ((packed));
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static inline int phys_hdr__size(enum diag204_format type)
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{
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if (type == INFO_SIMPLE)
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return sizeof(struct phys_hdr);
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else /* INFO_EXT */
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return sizeof(struct x_phys_hdr);
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}
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static inline __u8 phys_hdr__cpus(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct phys_hdr *)hdr)->cpus;
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else /* INFO_EXT */
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return ((struct x_phys_hdr *)hdr)->cpus;
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}
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/* Physical CPU info block */
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struct phys_cpu {
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__u16 cpu_addr;
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char reserved1[2];
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__u8 ctidx;
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char reserved2[3];
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__u64 mgm_time;
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char reserved3[8];
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} __attribute__ ((packed));
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struct x_phys_cpu {
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__u16 cpu_addr;
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char reserved1[2];
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__u8 ctidx;
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char reserved2[3];
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__u64 mgm_time;
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char reserved3[80];
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} __attribute__ ((packed));
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static inline int phys_cpu__size(enum diag204_format type)
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{
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if (type == INFO_SIMPLE)
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return sizeof(struct phys_cpu);
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else /* INFO_EXT */
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return sizeof(struct x_phys_cpu);
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}
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static inline __u16 phys_cpu__cpu_addr(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct phys_cpu *)hdr)->cpu_addr;
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else /* INFO_EXT */
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return ((struct x_phys_cpu *)hdr)->cpu_addr;
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}
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static inline __u64 phys_cpu__mgm_time(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct phys_cpu *)hdr)->mgm_time;
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else /* INFO_EXT */
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return ((struct x_phys_cpu *)hdr)->mgm_time;
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}
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static inline __u64 phys_cpu__ctidx(enum diag204_format type, void *hdr)
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{
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if (type == INFO_SIMPLE)
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return ((struct phys_cpu *)hdr)->ctidx;
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else /* INFO_EXT */
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return ((struct x_phys_cpu *)hdr)->ctidx;
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}
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/* Diagnose 204 functions */
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static int diag204(unsigned long subcode, unsigned long size, void *addr)
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{
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register unsigned long _subcode asm("0") = subcode;
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register unsigned long _size asm("1") = size;
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asm volatile(
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" diag %2,%0,0x204\n"
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"0:\n"
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EX_TABLE(0b,0b)
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: "+d" (_subcode), "+d" (_size) : "d" (addr) : "memory");
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if (_subcode)
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return -1;
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return _size;
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}
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/*
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* For the old diag subcode 4 with simple data format we have to use real
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* memory. If we use subcode 6 or 7 with extended data format, we can (and
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* should) use vmalloc, since we need a lot of memory in that case. Currently
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* up to 93 pages!
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*/
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static void diag204_free_buffer(void)
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{
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if (!diag204_buf)
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return;
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if (diag204_buf_vmalloc) {
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vfree(diag204_buf_vmalloc);
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diag204_buf_vmalloc = NULL;
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} else {
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free_pages((unsigned long) diag204_buf, 0);
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}
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diag204_buf_pages = 0;
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diag204_buf = NULL;
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}
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static void *diag204_alloc_vbuf(int pages)
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{
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/* The buffer has to be page aligned! */
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diag204_buf_vmalloc = vmalloc(PAGE_SIZE * (pages + 1));
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if (!diag204_buf_vmalloc)
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return ERR_PTR(-ENOMEM);
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diag204_buf = (void*)((unsigned long)diag204_buf_vmalloc
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& ~0xfffUL) + 0x1000;
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diag204_buf_pages = pages;
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return diag204_buf;
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}
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static void *diag204_alloc_rbuf(void)
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{
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|
|
diag204_buf = (void*)__get_free_pages(GFP_KERNEL,0);
|
||
|
|
if (!diag204_buf)
|
||
|
|
return ERR_PTR(-ENOMEM);
|
||
|
|
diag204_buf_pages = 1;
|
||
|
|
return diag204_buf;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void *diag204_get_buffer(enum diag204_format fmt, int *pages)
|
||
|
|
{
|
||
|
|
if (diag204_buf) {
|
||
|
|
*pages = diag204_buf_pages;
|
||
|
|
return diag204_buf;
|
||
|
|
}
|
||
|
|
if (fmt == INFO_SIMPLE) {
|
||
|
|
*pages = 1;
|
||
|
|
return diag204_alloc_rbuf();
|
||
|
|
} else {/* INFO_EXT */
|
||
|
|
*pages = diag204((unsigned long)SUBC_RSI |
|
||
|
|
(unsigned long)INFO_EXT, 0, NULL);
|
||
|
|
if (*pages <= 0)
|
||
|
|
return ERR_PTR(-ENOSYS);
|
||
|
|
else
|
||
|
|
return diag204_alloc_vbuf(*pages);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* diag204_probe() has to find out, which type of diagnose 204 implementation
|
||
|
|
* we have on our machine. Currently there are three possible scanarios:
|
||
|
|
* - subcode 4 + simple data format (only one page)
|
||
|
|
* - subcode 4-6 + extended data format
|
||
|
|
* - subcode 4-7 + extended data format
|
||
|
|
*
|
||
|
|
* Subcode 5 is used to retrieve the size of the data, provided by subcodes
|
||
|
|
* 6 and 7. Subcode 7 basically has the same function as subcode 6. In addition
|
||
|
|
* to subcode 6 it provides also information about secondary cpus.
|
||
|
|
* In order to get as much information as possible, we first try
|
||
|
|
* subcode 7, then 6 and if both fail, we use subcode 4.
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int diag204_probe(void)
|
||
|
|
{
|
||
|
|
void *buf;
|
||
|
|
int pages, rc;
|
||
|
|
|
||
|
|
buf = diag204_get_buffer(INFO_EXT, &pages);
|
||
|
|
if (!IS_ERR(buf)) {
|
||
|
|
if (diag204((unsigned long)SUBC_STIB7 |
|
||
|
|
(unsigned long)INFO_EXT, pages, buf) >= 0) {
|
||
|
|
diag204_store_sc = SUBC_STIB7;
|
||
|
|
diag204_info_type = INFO_EXT;
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
if (diag204((unsigned long)SUBC_STIB6 |
|
||
|
|
(unsigned long)INFO_EXT, pages, buf) >= 0) {
|
||
|
|
diag204_store_sc = SUBC_STIB6;
|
||
|
|
diag204_info_type = INFO_EXT;
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
diag204_free_buffer();
|
||
|
|
}
|
||
|
|
|
||
|
|
/* subcodes 6 and 7 failed, now try subcode 4 */
|
||
|
|
|
||
|
|
buf = diag204_get_buffer(INFO_SIMPLE, &pages);
|
||
|
|
if (IS_ERR(buf)) {
|
||
|
|
rc = PTR_ERR(buf);
|
||
|
|
goto fail_alloc;
|
||
|
|
}
|
||
|
|
if (diag204((unsigned long)SUBC_STIB4 |
|
||
|
|
(unsigned long)INFO_SIMPLE, pages, buf) >= 0) {
|
||
|
|
diag204_store_sc = SUBC_STIB4;
|
||
|
|
diag204_info_type = INFO_SIMPLE;
|
||
|
|
goto out;
|
||
|
|
} else {
|
||
|
|
rc = -ENOSYS;
|
||
|
|
goto fail_store;
|
||
|
|
}
|
||
|
|
out:
|
||
|
|
rc = 0;
|
||
|
|
fail_store:
|
||
|
|
diag204_free_buffer();
|
||
|
|
fail_alloc:
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void *diag204_store(void)
|
||
|
|
{
|
||
|
|
void *buf;
|
||
|
|
int pages;
|
||
|
|
|
||
|
|
buf = diag204_get_buffer(diag204_info_type, &pages);
|
||
|
|
if (IS_ERR(buf))
|
||
|
|
goto out;
|
||
|
|
if (diag204((unsigned long)diag204_store_sc |
|
||
|
|
(unsigned long)diag204_info_type, pages, buf) < 0)
|
||
|
|
return ERR_PTR(-ENOSYS);
|
||
|
|
out:
|
||
|
|
return buf;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Diagnose 224 functions */
|
||
|
|
|
||
|
|
static int diag224(void *ptr)
|
||
|
|
{
|
||
|
|
int rc = -ENOTSUPP;
|
||
|
|
|
||
|
|
asm volatile(
|
||
|
|
" diag %1,%2,0x224\n"
|
||
|
|
"0: lhi %0,0x0\n"
|
||
|
|
"1:\n"
|
||
|
|
EX_TABLE(0b,1b)
|
||
|
|
: "+d" (rc) :"d" (0), "d" (ptr) : "memory");
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int diag224_get_name_table(void)
|
||
|
|
{
|
||
|
|
/* memory must be below 2GB */
|
||
|
|
diag224_cpu_names = kmalloc(PAGE_SIZE, GFP_KERNEL | GFP_DMA);
|
||
|
|
if (!diag224_cpu_names)
|
||
|
|
return -ENOMEM;
|
||
|
|
if (diag224(diag224_cpu_names)) {
|
||
|
|
kfree(diag224_cpu_names);
|
||
|
|
return -ENOTSUPP;
|
||
|
|
}
|
||
|
|
EBCASC(diag224_cpu_names + 16, (*diag224_cpu_names + 1) * 16);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void diag224_delete_name_table(void)
|
||
|
|
{
|
||
|
|
kfree(diag224_cpu_names);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int diag224_idx2name(int index, char *name)
|
||
|
|
{
|
||
|
|
memcpy(name, diag224_cpu_names + ((index + 1) * CPU_NAME_LEN),
|
||
|
|
CPU_NAME_LEN);
|
||
|
|
name[CPU_NAME_LEN] = 0;
|
||
|
|
strstrip(name);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
__init int hypfs_diag_init(void)
|
||
|
|
{
|
||
|
|
int rc;
|
||
|
|
|
||
|
|
if (diag204_probe()) {
|
||
|
|
pr_err("The hardware system does not support hypfs\n");
|
||
|
|
return -ENODATA;
|
||
|
|
}
|
||
|
|
rc = diag224_get_name_table();
|
||
|
|
if (rc) {
|
||
|
|
diag204_free_buffer();
|
||
|
|
pr_err("The hardware system does not provide all "
|
||
|
|
"functions required by hypfs\n");
|
||
|
|
}
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
void hypfs_diag_exit(void)
|
||
|
|
{
|
||
|
|
diag224_delete_name_table();
|
||
|
|
diag204_free_buffer();
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Functions to create the directory structure
|
||
|
|
* *******************************************
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int hypfs_create_cpu_files(struct super_block *sb,
|
||
|
|
struct dentry *cpus_dir, void *cpu_info)
|
||
|
|
{
|
||
|
|
struct dentry *cpu_dir;
|
||
|
|
char buffer[TMP_SIZE];
|
||
|
|
void *rc;
|
||
|
|
|
||
|
|
snprintf(buffer, TMP_SIZE, "%d", cpu_info__cpu_addr(diag204_info_type,
|
||
|
|
cpu_info));
|
||
|
|
cpu_dir = hypfs_mkdir(sb, cpus_dir, buffer);
|
||
|
|
rc = hypfs_create_u64(sb, cpu_dir, "mgmtime",
|
||
|
|
cpu_info__acc_time(diag204_info_type, cpu_info) -
|
||
|
|
cpu_info__lp_time(diag204_info_type, cpu_info));
|
||
|
|
if (IS_ERR(rc))
|
||
|
|
return PTR_ERR(rc);
|
||
|
|
rc = hypfs_create_u64(sb, cpu_dir, "cputime",
|
||
|
|
cpu_info__lp_time(diag204_info_type, cpu_info));
|
||
|
|
if (IS_ERR(rc))
|
||
|
|
return PTR_ERR(rc);
|
||
|
|
if (diag204_info_type == INFO_EXT) {
|
||
|
|
rc = hypfs_create_u64(sb, cpu_dir, "onlinetime",
|
||
|
|
cpu_info__online_time(diag204_info_type,
|
||
|
|
cpu_info));
|
||
|
|
if (IS_ERR(rc))
|
||
|
|
return PTR_ERR(rc);
|
||
|
|
}
|
||
|
|
diag224_idx2name(cpu_info__ctidx(diag204_info_type, cpu_info), buffer);
|
||
|
|
rc = hypfs_create_str(sb, cpu_dir, "type", buffer);
|
||
|
|
if (IS_ERR(rc))
|
||
|
|
return PTR_ERR(rc);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void *hypfs_create_lpar_files(struct super_block *sb,
|
||
|
|
struct dentry *systems_dir, void *part_hdr)
|
||
|
|
{
|
||
|
|
struct dentry *cpus_dir;
|
||
|
|
struct dentry *lpar_dir;
|
||
|
|
char lpar_name[LPAR_NAME_LEN + 1];
|
||
|
|
void *cpu_info;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
part_hdr__part_name(diag204_info_type, part_hdr, lpar_name);
|
||
|
|
lpar_name[LPAR_NAME_LEN] = 0;
|
||
|
|
lpar_dir = hypfs_mkdir(sb, systems_dir, lpar_name);
|
||
|
|
if (IS_ERR(lpar_dir))
|
||
|
|
return lpar_dir;
|
||
|
|
cpus_dir = hypfs_mkdir(sb, lpar_dir, "cpus");
|
||
|
|
if (IS_ERR(cpus_dir))
|
||
|
|
return cpus_dir;
|
||
|
|
cpu_info = part_hdr + part_hdr__size(diag204_info_type);
|
||
|
|
for (i = 0; i < part_hdr__rcpus(diag204_info_type, part_hdr); i++) {
|
||
|
|
int rc;
|
||
|
|
rc = hypfs_create_cpu_files(sb, cpus_dir, cpu_info);
|
||
|
|
if (rc)
|
||
|
|
return ERR_PTR(rc);
|
||
|
|
cpu_info += cpu_info__size(diag204_info_type);
|
||
|
|
}
|
||
|
|
return cpu_info;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int hypfs_create_phys_cpu_files(struct super_block *sb,
|
||
|
|
struct dentry *cpus_dir, void *cpu_info)
|
||
|
|
{
|
||
|
|
struct dentry *cpu_dir;
|
||
|
|
char buffer[TMP_SIZE];
|
||
|
|
void *rc;
|
||
|
|
|
||
|
|
snprintf(buffer, TMP_SIZE, "%i", phys_cpu__cpu_addr(diag204_info_type,
|
||
|
|
cpu_info));
|
||
|
|
cpu_dir = hypfs_mkdir(sb, cpus_dir, buffer);
|
||
|
|
if (IS_ERR(cpu_dir))
|
||
|
|
return PTR_ERR(cpu_dir);
|
||
|
|
rc = hypfs_create_u64(sb, cpu_dir, "mgmtime",
|
||
|
|
phys_cpu__mgm_time(diag204_info_type, cpu_info));
|
||
|
|
if (IS_ERR(rc))
|
||
|
|
return PTR_ERR(rc);
|
||
|
|
diag224_idx2name(phys_cpu__ctidx(diag204_info_type, cpu_info), buffer);
|
||
|
|
rc = hypfs_create_str(sb, cpu_dir, "type", buffer);
|
||
|
|
if (IS_ERR(rc))
|
||
|
|
return PTR_ERR(rc);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void *hypfs_create_phys_files(struct super_block *sb,
|
||
|
|
struct dentry *parent_dir, void *phys_hdr)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
void *cpu_info;
|
||
|
|
struct dentry *cpus_dir;
|
||
|
|
|
||
|
|
cpus_dir = hypfs_mkdir(sb, parent_dir, "cpus");
|
||
|
|
if (IS_ERR(cpus_dir))
|
||
|
|
return cpus_dir;
|
||
|
|
cpu_info = phys_hdr + phys_hdr__size(diag204_info_type);
|
||
|
|
for (i = 0; i < phys_hdr__cpus(diag204_info_type, phys_hdr); i++) {
|
||
|
|
int rc;
|
||
|
|
rc = hypfs_create_phys_cpu_files(sb, cpus_dir, cpu_info);
|
||
|
|
if (rc)
|
||
|
|
return ERR_PTR(rc);
|
||
|
|
cpu_info += phys_cpu__size(diag204_info_type);
|
||
|
|
}
|
||
|
|
return cpu_info;
|
||
|
|
}
|
||
|
|
|
||
|
|
int hypfs_diag_create_files(struct super_block *sb, struct dentry *root)
|
||
|
|
{
|
||
|
|
struct dentry *systems_dir, *hyp_dir;
|
||
|
|
void *time_hdr, *part_hdr;
|
||
|
|
int i, rc;
|
||
|
|
void *buffer, *ptr;
|
||
|
|
|
||
|
|
buffer = diag204_store();
|
||
|
|
if (IS_ERR(buffer))
|
||
|
|
return PTR_ERR(buffer);
|
||
|
|
|
||
|
|
systems_dir = hypfs_mkdir(sb, root, "systems");
|
||
|
|
if (IS_ERR(systems_dir)) {
|
||
|
|
rc = PTR_ERR(systems_dir);
|
||
|
|
goto err_out;
|
||
|
|
}
|
||
|
|
time_hdr = (struct x_info_blk_hdr *)buffer;
|
||
|
|
part_hdr = time_hdr + info_blk_hdr__size(diag204_info_type);
|
||
|
|
for (i = 0; i < info_blk_hdr__npar(diag204_info_type, time_hdr); i++) {
|
||
|
|
part_hdr = hypfs_create_lpar_files(sb, systems_dir, part_hdr);
|
||
|
|
if (IS_ERR(part_hdr)) {
|
||
|
|
rc = PTR_ERR(part_hdr);
|
||
|
|
goto err_out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (info_blk_hdr__flags(diag204_info_type, time_hdr) & LPAR_PHYS_FLG) {
|
||
|
|
ptr = hypfs_create_phys_files(sb, root, part_hdr);
|
||
|
|
if (IS_ERR(ptr)) {
|
||
|
|
rc = PTR_ERR(ptr);
|
||
|
|
goto err_out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
hyp_dir = hypfs_mkdir(sb, root, "hyp");
|
||
|
|
if (IS_ERR(hyp_dir)) {
|
||
|
|
rc = PTR_ERR(hyp_dir);
|
||
|
|
goto err_out;
|
||
|
|
}
|
||
|
|
ptr = hypfs_create_str(sb, hyp_dir, "type", "LPAR Hypervisor");
|
||
|
|
if (IS_ERR(ptr)) {
|
||
|
|
rc = PTR_ERR(ptr);
|
||
|
|
goto err_out;
|
||
|
|
}
|
||
|
|
rc = 0;
|
||
|
|
|
||
|
|
err_out:
|
||
|
|
return rc;
|
||
|
|
}
|