summaryrefslogtreecommitdiffstats
path: root/drivers/s390/sysinfo.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390/sysinfo.c')
-rw-r--r--drivers/s390/sysinfo.c347
1 files changed, 347 insertions, 0 deletions
diff --git a/drivers/s390/sysinfo.c b/drivers/s390/sysinfo.c
new file mode 100644
index 00000000000..87c2db1bd4f
--- /dev/null
+++ b/drivers/s390/sysinfo.c
@@ -0,0 +1,347 @@
+/*
+ * drivers/s390/sysinfo.c
+ *
+ * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Ulrich Weigand (Ulrich.Weigand@de.ibm.com)
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <asm/ebcdic.h>
+
+struct sysinfo_1_1_1
+{
+ char reserved_0[32];
+ char manufacturer[16];
+ char type[4];
+ char reserved_1[12];
+ char model[16];
+ char sequence[16];
+ char plant[4];
+};
+
+struct sysinfo_1_2_1
+{
+ char reserved_0[80];
+ char sequence[16];
+ char plant[4];
+ char reserved_1[2];
+ unsigned short cpu_address;
+};
+
+struct sysinfo_1_2_2
+{
+ char reserved_0[32];
+ unsigned int capability;
+ unsigned short cpus_total;
+ unsigned short cpus_configured;
+ unsigned short cpus_standby;
+ unsigned short cpus_reserved;
+ unsigned short adjustment[0];
+};
+
+struct sysinfo_2_2_1
+{
+ char reserved_0[80];
+ char sequence[16];
+ char plant[4];
+ unsigned short cpu_id;
+ unsigned short cpu_address;
+};
+
+struct sysinfo_2_2_2
+{
+ char reserved_0[32];
+ unsigned short lpar_number;
+ char reserved_1;
+ unsigned char characteristics;
+ #define LPAR_CHAR_DEDICATED (1 << 7)
+ #define LPAR_CHAR_SHARED (1 << 6)
+ #define LPAR_CHAR_LIMITED (1 << 5)
+ unsigned short cpus_total;
+ unsigned short cpus_configured;
+ unsigned short cpus_standby;
+ unsigned short cpus_reserved;
+ char name[8];
+ unsigned int caf;
+ char reserved_2[16];
+ unsigned short cpus_dedicated;
+ unsigned short cpus_shared;
+};
+
+struct sysinfo_3_2_2
+{
+ char reserved_0[31];
+ unsigned char count;
+ struct
+ {
+ char reserved_0[4];
+ unsigned short cpus_total;
+ unsigned short cpus_configured;
+ unsigned short cpus_standby;
+ unsigned short cpus_reserved;
+ char name[8];
+ unsigned int caf;
+ char cpi[16];
+ char reserved_1[24];
+
+ } vm[8];
+};
+
+union s390_sysinfo
+{
+ struct sysinfo_1_1_1 sysinfo_1_1_1;
+ struct sysinfo_1_2_1 sysinfo_1_2_1;
+ struct sysinfo_1_2_2 sysinfo_1_2_2;
+ struct sysinfo_2_2_1 sysinfo_2_2_1;
+ struct sysinfo_2_2_2 sysinfo_2_2_2;
+ struct sysinfo_3_2_2 sysinfo_3_2_2;
+};
+
+static inline int stsi (void *sysinfo,
+ int fc, int sel1, int sel2)
+{
+ int cc, retv;
+
+#ifndef CONFIG_ARCH_S390X
+ __asm__ __volatile__ ( "lr\t0,%2\n"
+ "\tlr\t1,%3\n"
+ "\tstsi\t0(%4)\n"
+ "0:\tipm\t%0\n"
+ "\tsrl\t%0,28\n"
+ "1:lr\t%1,0\n"
+ ".section .fixup,\"ax\"\n"
+ "2:\tlhi\t%0,3\n"
+ "\tbras\t1,3f\n"
+ "\t.long 1b\n"
+ "3:\tl\t1,0(1)\n"
+ "\tbr\t1\n"
+ ".previous\n"
+ ".section __ex_table,\"a\"\n"
+ "\t.align 4\n"
+ "\t.long 0b,2b\n"
+ ".previous\n"
+ : "=d" (cc), "=d" (retv)
+ : "d" ((fc << 28) | sel1), "d" (sel2), "a" (sysinfo)
+ : "cc", "memory", "0", "1" );
+#else
+ __asm__ __volatile__ ( "lr\t0,%2\n"
+ "lr\t1,%3\n"
+ "\tstsi\t0(%4)\n"
+ "0:\tipm\t%0\n"
+ "\tsrl\t%0,28\n"
+ "1:lr\t%1,0\n"
+ ".section .fixup,\"ax\"\n"
+ "2:\tlhi\t%0,3\n"
+ "\tjg\t1b\n"
+ ".previous\n"
+ ".section __ex_table,\"a\"\n"
+ "\t.align 8\n"
+ "\t.quad 0b,2b\n"
+ ".previous\n"
+ : "=d" (cc), "=d" (retv)
+ : "d" ((fc << 28) | sel1), "d" (sel2), "a" (sysinfo)
+ : "cc", "memory", "0", "1" );
+#endif
+
+ return cc? -1 : retv;
+}
+
+static inline int stsi_0 (void)
+{
+ int rc = stsi (NULL, 0, 0, 0);
+ return rc == -1 ? rc : (((unsigned int)rc) >> 28);
+}
+
+static inline int stsi_1_1_1 (struct sysinfo_1_1_1 *info)
+{
+ int rc = stsi (info, 1, 1, 1);
+ if (rc != -1)
+ {
+ EBCASC (info->manufacturer, sizeof(info->manufacturer));
+ EBCASC (info->type, sizeof(info->type));
+ EBCASC (info->model, sizeof(info->model));
+ EBCASC (info->sequence, sizeof(info->sequence));
+ EBCASC (info->plant, sizeof(info->plant));
+ }
+ return rc == -1 ? rc : 0;
+}
+
+static inline int stsi_1_2_1 (struct sysinfo_1_2_1 *info)
+{
+ int rc = stsi (info, 1, 2, 1);
+ if (rc != -1)
+ {
+ EBCASC (info->sequence, sizeof(info->sequence));
+ EBCASC (info->plant, sizeof(info->plant));
+ }
+ return rc == -1 ? rc : 0;
+}
+
+static inline int stsi_1_2_2 (struct sysinfo_1_2_2 *info)
+{
+ int rc = stsi (info, 1, 2, 2);
+ return rc == -1 ? rc : 0;
+}
+
+static inline int stsi_2_2_1 (struct sysinfo_2_2_1 *info)
+{
+ int rc = stsi (info, 2, 2, 1);
+ if (rc != -1)
+ {
+ EBCASC (info->sequence, sizeof(info->sequence));
+ EBCASC (info->plant, sizeof(info->plant));
+ }
+ return rc == -1 ? rc : 0;
+}
+
+static inline int stsi_2_2_2 (struct sysinfo_2_2_2 *info)
+{
+ int rc = stsi (info, 2, 2, 2);
+ if (rc != -1)
+ {
+ EBCASC (info->name, sizeof(info->name));
+ }
+ return rc == -1 ? rc : 0;
+}
+
+static inline int stsi_3_2_2 (struct sysinfo_3_2_2 *info)
+{
+ int rc = stsi (info, 3, 2, 2);
+ if (rc != -1)
+ {
+ int i;
+ for (i = 0; i < info->count; i++)
+ {
+ EBCASC (info->vm[i].name, sizeof(info->vm[i].name));
+ EBCASC (info->vm[i].cpi, sizeof(info->vm[i].cpi));
+ }
+ }
+ return rc == -1 ? rc : 0;
+}
+
+
+static int proc_read_sysinfo(char *page, char **start,
+ off_t off, int count,
+ int *eof, void *data)
+{
+ unsigned long info_page = get_zeroed_page (GFP_KERNEL);
+ union s390_sysinfo *info = (union s390_sysinfo *) info_page;
+ int len = 0;
+ int level;
+ int i;
+
+ if (!info)
+ return 0;
+
+ level = stsi_0 ();
+
+ if (level >= 1 && stsi_1_1_1 (&info->sysinfo_1_1_1) == 0)
+ {
+ len += sprintf (page+len, "Manufacturer: %-16.16s\n",
+ info->sysinfo_1_1_1.manufacturer);
+ len += sprintf (page+len, "Type: %-4.4s\n",
+ info->sysinfo_1_1_1.type);
+ len += sprintf (page+len, "Model: %-16.16s\n",
+ info->sysinfo_1_1_1.model);
+ len += sprintf (page+len, "Sequence Code: %-16.16s\n",
+ info->sysinfo_1_1_1.sequence);
+ len += sprintf (page+len, "Plant: %-4.4s\n",
+ info->sysinfo_1_1_1.plant);
+ }
+
+ if (level >= 1 && stsi_1_2_2 (&info->sysinfo_1_2_2) == 0)
+ {
+ len += sprintf (page+len, "\n");
+ len += sprintf (page+len, "CPUs Total: %d\n",
+ info->sysinfo_1_2_2.cpus_total);
+ len += sprintf (page+len, "CPUs Configured: %d\n",
+ info->sysinfo_1_2_2.cpus_configured);
+ len += sprintf (page+len, "CPUs Standby: %d\n",
+ info->sysinfo_1_2_2.cpus_standby);
+ len += sprintf (page+len, "CPUs Reserved: %d\n",
+ info->sysinfo_1_2_2.cpus_reserved);
+
+ len += sprintf (page+len, "Capability: %d\n",
+ info->sysinfo_1_2_2.capability);
+
+ for (i = 2; i <= info->sysinfo_1_2_2.cpus_total; i++)
+ len += sprintf (page+len, "Adjustment %02d-way: %d\n",
+ i, info->sysinfo_1_2_2.adjustment[i-2]);
+ }
+
+ if (level >= 2 && stsi_2_2_2 (&info->sysinfo_2_2_2) == 0)
+ {
+ len += sprintf (page+len, "\n");
+ len += sprintf (page+len, "LPAR Number: %d\n",
+ info->sysinfo_2_2_2.lpar_number);
+
+ len += sprintf (page+len, "LPAR Characteristics: ");
+ if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_DEDICATED)
+ len += sprintf (page+len, "Dedicated ");
+ if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_SHARED)
+ len += sprintf (page+len, "Shared ");
+ if (info->sysinfo_2_2_2.characteristics & LPAR_CHAR_LIMITED)
+ len += sprintf (page+len, "Limited ");
+ len += sprintf (page+len, "\n");
+
+ len += sprintf (page+len, "LPAR Name: %-8.8s\n",
+ info->sysinfo_2_2_2.name);
+
+ len += sprintf (page+len, "LPAR Adjustment: %d\n",
+ info->sysinfo_2_2_2.caf);
+
+ len += sprintf (page+len, "LPAR CPUs Total: %d\n",
+ info->sysinfo_2_2_2.cpus_total);
+ len += sprintf (page+len, "LPAR CPUs Configured: %d\n",
+ info->sysinfo_2_2_2.cpus_configured);
+ len += sprintf (page+len, "LPAR CPUs Standby: %d\n",
+ info->sysinfo_2_2_2.cpus_standby);
+ len += sprintf (page+len, "LPAR CPUs Reserved: %d\n",
+ info->sysinfo_2_2_2.cpus_reserved);
+ len += sprintf (page+len, "LPAR CPUs Dedicated: %d\n",
+ info->sysinfo_2_2_2.cpus_dedicated);
+ len += sprintf (page+len, "LPAR CPUs Shared: %d\n",
+ info->sysinfo_2_2_2.cpus_shared);
+ }
+
+ if (level >= 3 && stsi_3_2_2 (&info->sysinfo_3_2_2) == 0)
+ {
+ for (i = 0; i < info->sysinfo_3_2_2.count; i++)
+ {
+ len += sprintf (page+len, "\n");
+ len += sprintf (page+len, "VM%02d Name: %-8.8s\n",
+ i, info->sysinfo_3_2_2.vm[i].name);
+ len += sprintf (page+len, "VM%02d Control Program: %-16.16s\n",
+ i, info->sysinfo_3_2_2.vm[i].cpi);
+
+ len += sprintf (page+len, "VM%02d Adjustment: %d\n",
+ i, info->sysinfo_3_2_2.vm[i].caf);
+
+ len += sprintf (page+len, "VM%02d CPUs Total: %d\n",
+ i, info->sysinfo_3_2_2.vm[i].cpus_total);
+ len += sprintf (page+len, "VM%02d CPUs Configured: %d\n",
+ i, info->sysinfo_3_2_2.vm[i].cpus_configured);
+ len += sprintf (page+len, "VM%02d CPUs Standby: %d\n",
+ i, info->sysinfo_3_2_2.vm[i].cpus_standby);
+ len += sprintf (page+len, "VM%02d CPUs Reserved: %d\n",
+ i, info->sysinfo_3_2_2.vm[i].cpus_reserved);
+ }
+ }
+
+ free_page (info_page);
+ return len;
+}
+
+static __init int create_proc_sysinfo(void)
+{
+ create_proc_read_entry ("sysinfo", 0444, NULL,
+ proc_read_sysinfo, NULL);
+ return 0;
+}
+
+__initcall(create_proc_sysinfo);
+
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-12 08:50:32 +0000