| /* |
| * drivers/s390/sysinfo.c |
| * |
| * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation |
| * Author(s): Ulrich Weigand (Ulrich.Weigand@de.ibm.com) |
| */ |
| |
| #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_capacity[16]; |
| char sequence[16]; |
| char plant[4]; |
| char model[16]; |
| }; |
| |
| 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 format; |
| char reserved_0[1]; |
| unsigned short acc_offset; |
| char reserved_1[24]; |
| unsigned int secondary_capability; |
| 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_1_2_2_extension { |
| unsigned int alt_capability; |
| unsigned short alt_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; |
| 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; |
| }; |
| |
| #define LPAR_CHAR_DEDICATED (1 << 7) |
| #define LPAR_CHAR_SHARED (1 << 6) |
| #define LPAR_CHAR_LIMITED (1 << 5) |
| |
| 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]; |
| }; |
| |
| static inline int stsi(void *sysinfo, int fc, int sel1, int sel2) |
| { |
| register int r0 asm("0") = (fc << 28) | sel1; |
| register int r1 asm("1") = sel2; |
| |
| asm volatile( |
| " stsi 0(%2)\n" |
| "0: jz 2f\n" |
| "1: lhi %0,%3\n" |
| "2:\n" |
| EX_TABLE(0b,1b) |
| : "+d" (r0) : "d" (r1), "a" (sysinfo), "K" (-ENOSYS) |
| : "cc", "memory" ); |
| return r0; |
| } |
| |
| static inline int stsi_0(void) |
| { |
| int rc = stsi (NULL, 0, 0, 0); |
| return rc == -ENOSYS ? rc : (((unsigned int) rc) >> 28); |
| } |
| |
| static int stsi_1_1_1(struct sysinfo_1_1_1 *info, char *page, int len) |
| { |
| if (stsi(info, 1, 1, 1) == -ENOSYS) |
| return len; |
| |
| 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)); |
| EBCASC(info->model_capacity, sizeof(info->model_capacity)); |
| len += sprintf(page + len, "Manufacturer: %-16.16s\n", |
| info->manufacturer); |
| len += sprintf(page + len, "Type: %-4.4s\n", |
| info->type); |
| if (info->model[0] != '\0') |
| /* |
| * Sigh: the model field has been renamed with System z9 |
| * to model_capacity and a new model field has been added |
| * after the plant field. To avoid confusing older programs |
| * the "Model:" prints "model_capacity model" or just |
| * "model_capacity" if the model string is empty . |
| */ |
| len += sprintf(page + len, |
| "Model: %-16.16s %-16.16s\n", |
| info->model_capacity, info->model); |
| else |
| len += sprintf(page + len, "Model: %-16.16s\n", |
| info->model_capacity); |
| len += sprintf(page + len, "Sequence Code: %-16.16s\n", |
| info->sequence); |
| len += sprintf(page + len, "Plant: %-4.4s\n", |
| info->plant); |
| len += sprintf(page + len, "Model Capacity: %-16.16s\n", |
| info->model_capacity); |
| return len; |
| } |
| |
| #if 0 /* Currently unused */ |
| static int stsi_1_2_1(struct sysinfo_1_2_1 *info, char *page, int len) |
| { |
| if (stsi(info, 1, 2, 1) == -ENOSYS) |
| return len; |
| |
| len += sprintf(page + len, "\n"); |
| EBCASC(info->sequence, sizeof(info->sequence)); |
| EBCASC(info->plant, sizeof(info->plant)); |
| len += sprintf(page + len, "Sequence Code of CPU: %-16.16s\n", |
| info->sequence); |
| len += sprintf(page + len, "Plant of CPU: %-16.16s\n", |
| info->plant); |
| return len; |
| } |
| #endif |
| |
| static int stsi_1_2_2(struct sysinfo_1_2_2 *info, char *page, int len) |
| { |
| struct sysinfo_1_2_2_extension *ext; |
| int i; |
| |
| if (stsi(info, 1, 2, 2) == -ENOSYS) |
| return len; |
| ext = (struct sysinfo_1_2_2_extension *) |
| ((unsigned long) info + info->acc_offset); |
| |
| len += sprintf(page + len, "\n"); |
| len += sprintf(page + len, "CPUs Total: %d\n", |
| info->cpus_total); |
| len += sprintf(page + len, "CPUs Configured: %d\n", |
| info->cpus_configured); |
| len += sprintf(page + len, "CPUs Standby: %d\n", |
| info->cpus_standby); |
| len += sprintf(page + len, "CPUs Reserved: %d\n", |
| info->cpus_reserved); |
| |
| if (info->format == 1) { |
| /* |
| * Sigh 2. According to the specification the alternate |
| * capability field is a 32 bit floating point number |
| * if the higher order 8 bits are not zero. Printing |
| * a floating point number in the kernel is a no-no, |
| * always print the number as 32 bit unsigned integer. |
| * The user-space needs to know about the stange |
| * encoding of the alternate cpu capability. |
| */ |
| len += sprintf(page + len, "Capability: %u %u\n", |
| info->capability, ext->alt_capability); |
| for (i = 2; i <= info->cpus_total; i++) |
| len += sprintf(page + len, |
| "Adjustment %02d-way: %u %u\n", |
| i, info->adjustment[i-2], |
| ext->alt_adjustment[i-2]); |
| |
| } else { |
| len += sprintf(page + len, "Capability: %u\n", |
| info->capability); |
| for (i = 2; i <= info->cpus_total; i++) |
| len += sprintf(page + len, |
| "Adjustment %02d-way: %u\n", |
| i, info->adjustment[i-2]); |
| } |
| |
| if (info->secondary_capability != 0) |
| len += sprintf(page + len, "Secondary Capability: %d\n", |
| info->secondary_capability); |
| |
| return len; |
| } |
| |
| #if 0 /* Currently unused */ |
| static int stsi_2_2_1(struct sysinfo_2_2_1 *info, char *page, int len) |
| { |
| if (stsi(info, 2, 2, 1) == -ENOSYS) |
| return len; |
| |
| len += sprintf(page + len, "\n"); |
| EBCASC (info->sequence, sizeof(info->sequence)); |
| EBCASC (info->plant, sizeof(info->plant)); |
| len += sprintf(page + len, "Sequence Code of logical CPU: %-16.16s\n", |
| info->sequence); |
| len += sprintf(page + len, "Plant of logical CPU: %-16.16s\n", |
| info->plant); |
| return len; |
| } |
| #endif |
| |
| static int stsi_2_2_2(struct sysinfo_2_2_2 *info, char *page, int len) |
| { |
| if (stsi(info, 2, 2, 2) == -ENOSYS) |
| return len; |
| |
| EBCASC (info->name, sizeof(info->name)); |
| |
| len += sprintf(page + len, "\n"); |
| len += sprintf(page + len, "LPAR Number: %d\n", |
| info->lpar_number); |
| |
| len += sprintf(page + len, "LPAR Characteristics: "); |
| if (info->characteristics & LPAR_CHAR_DEDICATED) |
| len += sprintf(page + len, "Dedicated "); |
| if (info->characteristics & LPAR_CHAR_SHARED) |
| len += sprintf(page + len, "Shared "); |
| if (info->characteristics & LPAR_CHAR_LIMITED) |
| len += sprintf(page + len, "Limited "); |
| len += sprintf(page + len, "\n"); |
| |
| len += sprintf(page + len, "LPAR Name: %-8.8s\n", |
| info->name); |
| |
| len += sprintf(page + len, "LPAR Adjustment: %d\n", |
| info->caf); |
| |
| len += sprintf(page + len, "LPAR CPUs Total: %d\n", |
| info->cpus_total); |
| len += sprintf(page + len, "LPAR CPUs Configured: %d\n", |
| info->cpus_configured); |
| len += sprintf(page + len, "LPAR CPUs Standby: %d\n", |
| info->cpus_standby); |
| len += sprintf(page + len, "LPAR CPUs Reserved: %d\n", |
| info->cpus_reserved); |
| len += sprintf(page + len, "LPAR CPUs Dedicated: %d\n", |
| info->cpus_dedicated); |
| len += sprintf(page + len, "LPAR CPUs Shared: %d\n", |
| info->cpus_shared); |
| return len; |
| } |
| |
| static int stsi_3_2_2(struct sysinfo_3_2_2 *info, char *page, int len) |
| { |
| int i; |
| |
| if (stsi(info, 3, 2, 2) == -ENOSYS) |
| return len; |
| 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)); |
| len += sprintf(page + len, "\n"); |
| len += sprintf(page + len, "VM%02d Name: %-8.8s\n", |
| i, info->vm[i].name); |
| len += sprintf(page + len, "VM%02d Control Program: %-16.16s\n", |
| i, info->vm[i].cpi); |
| |
| len += sprintf(page + len, "VM%02d Adjustment: %d\n", |
| i, info->vm[i].caf); |
| |
| len += sprintf(page + len, "VM%02d CPUs Total: %d\n", |
| i, info->vm[i].cpus_total); |
| len += sprintf(page + len, "VM%02d CPUs Configured: %d\n", |
| i, info->vm[i].cpus_configured); |
| len += sprintf(page + len, "VM%02d CPUs Standby: %d\n", |
| i, info->vm[i].cpus_standby); |
| len += sprintf(page + len, "VM%02d CPUs Reserved: %d\n", |
| i, info->vm[i].cpus_reserved); |
| } |
| return len; |
| } |
| |
| |
| static int proc_read_sysinfo(char *page, char **start, |
| off_t off, int count, |
| int *eof, void *data) |
| { |
| unsigned long info = get_zeroed_page (GFP_KERNEL); |
| int level, len; |
| |
| if (!info) |
| return 0; |
| |
| len = 0; |
| level = stsi_0(); |
| if (level >= 1) |
| len = stsi_1_1_1((struct sysinfo_1_1_1 *) info, page, len); |
| |
| if (level >= 1) |
| len = stsi_1_2_2((struct sysinfo_1_2_2 *) info, page, len); |
| |
| if (level >= 2) |
| len = stsi_2_2_2((struct sysinfo_2_2_2 *) info, page, len); |
| |
| if (level >= 3) |
| len = stsi_3_2_2((struct sysinfo_3_2_2 *) info, page, len); |
| |
| free_page (info); |
| 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); |
| |
