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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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81f0cd97aa
The seq_printf return value, because it's frequently misused,
will eventually be converted to void.
See: commit 1f33c41c03
("seq_file: Rename seq_overflow() to
seq_has_overflowed() and make public")
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
159 lines
4.1 KiB
C
159 lines
4.1 KiB
C
/*
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* CPU-version specific code
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*
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* Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2006-2009 PetaLogix
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/seq_file.h>
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#include <linux/cpu.h>
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#include <linux/initrd.h>
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#include <linux/bug.h>
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#include <asm/cpuinfo.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <asm/page.h>
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#include <linux/param.h>
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#include <asm/pvr.h>
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#include <asm/sections.h>
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#include <asm/setup.h>
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static int show_cpuinfo(struct seq_file *m, void *v)
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{
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char *fpga_family = "Unknown";
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char *cpu_ver = "Unknown";
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int i;
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/* Denormalised to get the fpga family string */
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for (i = 0; family_string_lookup[i].s != NULL; i++) {
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if (cpuinfo.fpga_family_code == family_string_lookup[i].k) {
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fpga_family = (char *)family_string_lookup[i].s;
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break;
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}
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}
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/* Denormalised to get the hw version string */
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for (i = 0; cpu_ver_lookup[i].s != NULL; i++) {
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if (cpuinfo.ver_code == cpu_ver_lookup[i].k) {
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cpu_ver = (char *)cpu_ver_lookup[i].s;
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break;
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}
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}
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seq_printf(m,
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"CPU-Family: MicroBlaze\n"
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"FPGA-Arch: %s\n"
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"CPU-Ver: %s, %s endian\n"
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"CPU-MHz: %d.%02d\n"
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"BogoMips: %lu.%02lu\n",
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fpga_family,
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cpu_ver,
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cpuinfo.endian ? "little" : "big",
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cpuinfo.cpu_clock_freq / 1000000,
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cpuinfo.cpu_clock_freq % 1000000,
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loops_per_jiffy / (500000 / HZ),
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(loops_per_jiffy / (5000 / HZ)) % 100);
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seq_printf(m,
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"HW:\n Shift:\t\t%s\n"
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" MSR:\t\t%s\n"
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" PCMP:\t\t%s\n"
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" DIV:\t\t%s\n",
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(cpuinfo.use_instr & PVR0_USE_BARREL_MASK) ? "yes" : "no",
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(cpuinfo.use_instr & PVR2_USE_MSR_INSTR) ? "yes" : "no",
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(cpuinfo.use_instr & PVR2_USE_PCMP_INSTR) ? "yes" : "no",
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(cpuinfo.use_instr & PVR0_USE_DIV_MASK) ? "yes" : "no");
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seq_printf(m, " MMU:\t\t%x\n", cpuinfo.mmu);
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seq_printf(m,
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" MUL:\t\t%s\n"
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" FPU:\t\t%s\n",
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(cpuinfo.use_mult & PVR2_USE_MUL64_MASK) ? "v2" :
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(cpuinfo.use_mult & PVR0_USE_HW_MUL_MASK) ? "v1" : "no",
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(cpuinfo.use_fpu & PVR2_USE_FPU2_MASK) ? "v2" :
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(cpuinfo.use_fpu & PVR0_USE_FPU_MASK) ? "v1" : "no");
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seq_printf(m,
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" Exc:\t\t%s%s%s%s%s%s%s%s\n",
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(cpuinfo.use_exc & PVR2_OPCODE_0x0_ILL_MASK) ? "op0x0 " : "",
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(cpuinfo.use_exc & PVR2_UNALIGNED_EXC_MASK) ? "unal " : "",
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(cpuinfo.use_exc & PVR2_ILL_OPCODE_EXC_MASK) ? "ill " : "",
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(cpuinfo.use_exc & PVR2_IOPB_BUS_EXC_MASK) ? "iopb " : "",
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(cpuinfo.use_exc & PVR2_DOPB_BUS_EXC_MASK) ? "dopb " : "",
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(cpuinfo.use_exc & PVR2_DIV_ZERO_EXC_MASK) ? "zero " : "",
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(cpuinfo.use_exc & PVR2_FPU_EXC_MASK) ? "fpu " : "",
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(cpuinfo.use_exc & PVR2_USE_FSL_EXC) ? "fsl " : "");
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seq_printf(m,
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"Stream-insns:\t%sprivileged\n",
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cpuinfo.mmu_privins ? "un" : "");
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if (cpuinfo.use_icache)
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seq_printf(m,
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"Icache:\t\t%ukB\tline length:\t%dB\n",
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cpuinfo.icache_size >> 10,
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cpuinfo.icache_line_length);
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else
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seq_puts(m, "Icache:\t\tno\n");
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if (cpuinfo.use_dcache) {
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seq_printf(m,
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"Dcache:\t\t%ukB\tline length:\t%dB\n",
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cpuinfo.dcache_size >> 10,
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cpuinfo.dcache_line_length);
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seq_puts(m, "Dcache-Policy:\t");
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if (cpuinfo.dcache_wb)
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seq_puts(m, "write-back\n");
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else
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seq_puts(m, "write-through\n");
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} else {
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seq_puts(m, "Dcache:\t\tno\n");
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}
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seq_printf(m,
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"HW-Debug:\t%s\n",
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cpuinfo.hw_debug ? "yes" : "no");
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seq_printf(m,
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"PVR-USR1:\t%02x\n"
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"PVR-USR2:\t%08x\n",
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cpuinfo.pvr_user1,
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cpuinfo.pvr_user2);
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seq_printf(m, "Page size:\t%lu\n", PAGE_SIZE);
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return 0;
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}
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static void *c_start(struct seq_file *m, loff_t *pos)
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{
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int i = *pos;
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return i < NR_CPUS ? (void *) (i + 1) : NULL;
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}
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static void *c_next(struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return c_start(m, pos);
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}
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static void c_stop(struct seq_file *m, void *v)
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{
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}
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const struct seq_operations cpuinfo_op = {
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.start = c_start,
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.next = c_next,
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.stop = c_stop,
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.show = show_cpuinfo,
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};
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