Commit 7b468488 authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

[S390] eliminate cpuinfo_S390 structure


Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 2938af53
......@@ -80,7 +80,6 @@
#define __LC_USER_ASCE 0xC50
#define __LC_PANIC_STACK 0xC54
#define __LC_CPUID 0xC60
#define __LC_CPUADDR 0xC68
#define __LC_IPLDEV 0xC7C
#define __LC_CURRENT 0xC90
#define __LC_INT_CLOCK 0xC98
......@@ -102,7 +101,6 @@
#define __LC_USER_ASCE 0xD60
#define __LC_PANIC_STACK 0xD68
#define __LC_CPUID 0xD80
#define __LC_CPUADDR 0xD88
#define __LC_IPLDEV 0xDB8
#define __LC_CURRENT 0xDD8
#define __LC_INT_CLOCK 0xDE8
......@@ -273,8 +271,10 @@ struct _lowcore
__u32 user_exec_asce; /* 0xc58 */
__u8 pad10[0xc60-0xc5c]; /* 0xc5c */
/* entry.S sensitive area start */
struct cpuinfo_S390 cpu_data; /* 0xc60 */
__u32 ipl_device; /* 0xc7c */
cpuid_t cpu_id; /* 0xc60 */
__u32 cpu_nr; /* 0xc68 */
__u32 ipl_device; /* 0xc6c */
__u8 pad_0xc70[0xc80-0xc70]; /* 0xc70 */
/* entry.S sensitive area end */
/* SMP info area: defined by DJB */
......@@ -366,9 +366,10 @@ struct _lowcore
__u64 user_exec_asce; /* 0xd70 */
__u8 pad10[0xd80-0xd78]; /* 0xd78 */
/* entry.S sensitive area start */
struct cpuinfo_S390 cpu_data; /* 0xd80 */
__u32 ipl_device; /* 0xdb8 */
__u32 pad11; /* 0xdbc */
cpuid_t cpu_id; /* 0xd80 */
__u32 cpu_nr; /* 0xd88 */
__u32 ipl_device; /* 0xd8c */
__u8 pad_0xd90[0xdc0-0xd90]; /* 0xd90 */
/* entry.S sensitive area end */
/* SMP info area: defined by DJB */
......
......@@ -42,22 +42,8 @@ static inline void get_cpu_id(cpuid_t *ptr)
asm volatile("stidp 0(%1)" : "=m" (*ptr) : "a" (ptr));
}
struct cpuinfo_S390
{
cpuid_t cpu_id;
__u16 cpu_addr;
__u16 cpu_nr;
unsigned long loops_per_jiffy;
unsigned long *pgd_quick;
#ifdef __s390x__
unsigned long *pmd_quick;
#endif /* __s390x__ */
unsigned long *pte_quick;
unsigned long pgtable_cache_sz;
};
extern void s390_adjust_jiffies(void);
extern void print_cpu_info(struct cpuinfo_S390 *);
extern void print_cpu_info(void);
extern int get_cpu_capability(unsigned int *);
/*
......
......@@ -50,12 +50,7 @@ extern void machine_power_off_smp(void);
#define PROC_CHANGE_PENALTY 20 /* Schedule penalty */
#define raw_smp_processor_id() (S390_lowcore.cpu_data.cpu_nr)
static inline __u16 hard_smp_processor_id(void)
{
return stap();
}
#define raw_smp_processor_id() (S390_lowcore.cpu_nr)
/*
* returns 1 if cpu is in stopped/check stopped state or not operational
......
......@@ -18,10 +18,11 @@
#include <asm/lowcore.h>
#include <asm/param.h>
void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo)
void __cpuinit print_cpu_info(void)
{
pr_info("Processor %d started, address %d, identification %06X\n",
cpuinfo->cpu_nr, cpuinfo->cpu_addr, cpuinfo->cpu_id.ident);
S390_lowcore.cpu_nr, S390_lowcore.cpu_addr,
S390_lowcore.cpu_id.ident);
}
/*
......@@ -34,44 +35,42 @@ static int show_cpuinfo(struct seq_file *m, void *v)
"esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
"edat"
};
struct cpuinfo_S390 *cpuinfo;
unsigned long n = (unsigned long) v - 1;
int i;
struct _lowcore *lc;
unsigned long n = (unsigned long) v - 1;
int i;
s390_adjust_jiffies();
preempt_disable();
if (!n) {
seq_printf(m, "vendor_id : IBM/S390\n"
"# processors : %i\n"
"bogomips per cpu: %lu.%02lu\n",
num_online_cpus(), loops_per_jiffy/(500000/HZ),
(loops_per_jiffy/(5000/HZ))%100);
seq_puts(m, "features\t: ");
for (i = 0; i < 8; i++)
if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
seq_printf(m, "%s ", hwcap_str[i]);
seq_puts(m, "\n");
}
s390_adjust_jiffies();
preempt_disable();
if (!n) {
seq_printf(m, "vendor_id : IBM/S390\n"
"# processors : %i\n"
"bogomips per cpu: %lu.%02lu\n",
num_online_cpus(), loops_per_jiffy/(500000/HZ),
(loops_per_jiffy/(5000/HZ))%100);
seq_puts(m, "features\t: ");
for (i = 0; i < 8; i++)
if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
seq_printf(m, "%s ", hwcap_str[i]);
seq_puts(m, "\n");
}
if (cpu_online(n)) {
if (cpu_online(n)) {
#ifdef CONFIG_SMP
if (smp_processor_id() == n)
cpuinfo = &S390_lowcore.cpu_data;
else
cpuinfo = &lowcore_ptr[n]->cpu_data;
lc = (smp_processor_id() == n) ?
&S390_lowcore : lowcore_ptr[n];
#else
cpuinfo = &S390_lowcore.cpu_data;
lc = &S390_lowcore;
#endif
seq_printf(m, "processor %li: "
"version = %02X, "
"identification = %06X, "
"machine = %04X\n",
n, cpuinfo->cpu_id.version,
cpuinfo->cpu_id.ident,
cpuinfo->cpu_id.machine);
}
preempt_enable();
return 0;
seq_printf(m, "processor %li: "
"version = %02X, "
"identification = %06X, "
"machine = %04X\n",
n, lc->cpu_id.version,
lc->cpu_id.ident,
lc->cpu_id.machine);
}
preempt_enable();
return 0;
}
static void *c_start(struct seq_file *m, loff_t *pos)
......
......@@ -121,13 +121,10 @@ static struct resource data_resource = {
*/
void __cpuinit cpu_init(void)
{
int addr = hard_smp_processor_id();
/*
* Store processor id in lowcore (used e.g. in timer_interrupt)
*/
get_cpu_id(&S390_lowcore.cpu_data.cpu_id);
S390_lowcore.cpu_data.cpu_addr = addr;
get_cpu_id(&S390_lowcore.cpu_id);
/*
* Force FPU initialization:
......@@ -686,7 +683,6 @@ setup_memory(void)
static void __init setup_hwcaps(void)
{
static const int stfl_bits[6] = { 0, 2, 7, 17, 19, 21 };
struct cpuinfo_S390 *cpuinfo = &S390_lowcore.cpu_data;
unsigned long long facility_list_extended;
unsigned int facility_list;
int i;
......@@ -732,7 +728,7 @@ static void __init setup_hwcaps(void)
if (MACHINE_HAS_HPAGE)
elf_hwcap |= 1UL << 7;
switch (cpuinfo->cpu_id.machine) {
switch (S390_lowcore.cpu_id.machine) {
case 0x9672:
#if !defined(CONFIG_64BIT)
default: /* Use "g5" as default for 31 bit kernels. */
......@@ -825,7 +821,7 @@ setup_arch(char **cmdline_p)
setup_lowcore();
cpu_init();
__cpu_logical_map[0] = S390_lowcore.cpu_data.cpu_addr;
__cpu_logical_map[0] = stap();
s390_init_cpu_topology();
/*
......
......@@ -372,7 +372,7 @@ static void __init smp_detect_cpus(void)
c_cpus = 1;
s_cpus = 0;
boot_cpu_addr = S390_lowcore.cpu_data.cpu_addr;
boot_cpu_addr = __cpu_logical_map[0];
info = kmalloc(sizeof(*info), GFP_KERNEL);
if (!info)
panic("smp_detect_cpus failed to allocate memory\n");
......@@ -446,7 +446,7 @@ int __cpuinit start_secondary(void *cpuvoid)
/* Switch on interrupts */
local_irq_enable();
/* Print info about this processor */
print_cpu_info(&S390_lowcore.cpu_data);
print_cpu_info();
/* cpu_idle will call schedule for us */
cpu_idle();
return 0;
......@@ -564,7 +564,7 @@ int __cpuinit __cpu_up(unsigned int cpu)
: : "a" (&cpu_lowcore->access_regs_save_area) : "memory");
cpu_lowcore->percpu_offset = __per_cpu_offset[cpu];
cpu_lowcore->current_task = (unsigned long) idle;
cpu_lowcore->cpu_data.cpu_nr = cpu;
cpu_lowcore->cpu_nr = cpu;
cpu_lowcore->kernel_asce = S390_lowcore.kernel_asce;
cpu_lowcore->ipl_device = S390_lowcore.ipl_device;
eieio();
......@@ -656,7 +656,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
/* request the 0x1201 emergency signal external interrupt */
if (register_external_interrupt(0x1201, do_ext_call_interrupt) != 0)
panic("Couldn't request external interrupt 0x1201");
print_cpu_info(&S390_lowcore.cpu_data);
print_cpu_info();
/* Reallocate current lowcore, but keep its contents. */
lc_order = sizeof(long) == 8 ? 1 : 0;
......
......@@ -655,7 +655,7 @@ css_generate_pgid(struct channel_subsystem *css, u32 tod_high)
css->global_pgid.pgid_high.ext_cssid.cssid = css->cssid;
} else {
#ifdef CONFIG_SMP
css->global_pgid.pgid_high.cpu_addr = hard_smp_processor_id();
css->global_pgid.pgid_high.cpu_addr = stap();
#else
css->global_pgid.pgid_high.cpu_addr = 0;
#endif
......
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