Contributors: 21
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Peter Bergner |
119 |
24.44% |
1 |
2.70% |
| Benjamin Herrenschmidt |
105 |
21.56% |
6 |
16.22% |
| Andrew Morton |
72 |
14.78% |
4 |
10.81% |
| Paul Mackerras |
48 |
9.86% |
1 |
2.70% |
| Anton Blanchard |
41 |
8.42% |
3 |
8.11% |
| Thomas Weißschuh |
37 |
7.60% |
4 |
10.81% |
| Al Viro |
24 |
4.93% |
4 |
10.81% |
| Alexey Dobriyan |
7 |
1.44% |
1 |
2.70% |
| Christophe Leroy |
5 |
1.03% |
1 |
2.70% |
| Michael Ellerman |
4 |
0.82% |
1 |
2.70% |
| Segher Boessenkool |
4 |
0.82% |
1 |
2.70% |
| David Howells |
4 |
0.82% |
1 |
2.70% |
| Nadia Yvette Chambers |
3 |
0.62% |
1 |
2.70% |
| Linus Torvalds |
2 |
0.41% |
1 |
2.70% |
| Song Muchun |
2 |
0.41% |
1 |
2.70% |
| Yinghai Lu |
2 |
0.41% |
1 |
2.70% |
| Michal Ostrowski |
2 |
0.41% |
1 |
2.70% |
| David S. Miller |
2 |
0.41% |
1 |
2.70% |
| Thomas Gleixner |
2 |
0.41% |
1 |
2.70% |
| Stephen Rothwell |
1 |
0.21% |
1 |
2.70% |
| Russell Currey |
1 |
0.21% |
1 |
2.70% |
| Total |
487 |
|
37 |
|
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2001 Mike Corrigan & Dave Engebretsen IBM Corporation
*/
#include <linux/init.h>
#include <linux/memblock.h>
#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <asm/machdep.h>
#include <asm/vdso_datapage.h>
#include <asm/rtas.h>
#include <asm/systemcfg.h>
#include <linux/uaccess.h>
#ifdef CONFIG_PPC64_PROC_SYSTEMCFG
static loff_t page_map_seek(struct file *file, loff_t off, int whence)
{
return fixed_size_llseek(file, off, whence, PAGE_SIZE);
}
static ssize_t page_map_read( struct file *file, char __user *buf, size_t nbytes,
loff_t *ppos)
{
return simple_read_from_buffer(buf, nbytes, ppos,
pde_data(file_inode(file)), PAGE_SIZE);
}
static int page_map_mmap( struct file *file, struct vm_area_struct *vma )
{
if ((vma->vm_end - vma->vm_start) > PAGE_SIZE)
return -EINVAL;
return remap_pfn_range(vma, vma->vm_start,
__pa(pde_data(file_inode(file))) >> PAGE_SHIFT,
PAGE_SIZE, vma->vm_page_prot);
}
static const struct proc_ops page_map_proc_ops = {
.proc_lseek = page_map_seek,
.proc_read = page_map_read,
.proc_mmap = page_map_mmap,
};
static union {
struct systemcfg data;
u8 page[PAGE_SIZE];
} systemcfg_data_store __page_aligned_data;
struct systemcfg *systemcfg = &systemcfg_data_store.data;
static int __init proc_ppc64_init(void)
{
struct proc_dir_entry *pde;
strcpy((char *)systemcfg->eye_catcher, "SYSTEMCFG:PPC64");
systemcfg->version.major = SYSTEMCFG_MAJOR;
systemcfg->version.minor = SYSTEMCFG_MINOR;
systemcfg->processor = mfspr(SPRN_PVR);
/*
* Fake the old platform number for pSeries and add
* in LPAR bit if necessary
*/
systemcfg->platform = 0x100;
if (firmware_has_feature(FW_FEATURE_LPAR))
systemcfg->platform |= 1;
systemcfg->physicalMemorySize = memblock_phys_mem_size();
systemcfg->dcache_size = ppc64_caches.l1d.size;
systemcfg->dcache_line_size = ppc64_caches.l1d.line_size;
systemcfg->icache_size = ppc64_caches.l1i.size;
systemcfg->icache_line_size = ppc64_caches.l1i.line_size;
pde = proc_create_data("powerpc/systemcfg", S_IFREG | 0444, NULL,
&page_map_proc_ops, systemcfg);
if (!pde)
return 1;
proc_set_size(pde, PAGE_SIZE);
return 0;
}
__initcall(proc_ppc64_init);
#endif /* CONFIG_PPC64_PROC_SYSTEMCFG */
/*
* Create the ppc64 and ppc64/rtas directories early. This allows us to
* assume that they have been previously created in drivers.
*/
static int __init proc_ppc64_create(void)
{
struct proc_dir_entry *root;
root = proc_mkdir("powerpc", NULL);
if (!root)
return 1;
#ifdef CONFIG_PPC64
if (!proc_symlink("ppc64", NULL, "powerpc"))
pr_err("Failed to create link /proc/ppc64 -> /proc/powerpc\n");
#endif
if (!of_find_node_by_path("/rtas"))
return 0;
if (!proc_mkdir("rtas", root))
return 1;
if (!proc_symlink("rtas", NULL, "powerpc/rtas"))
return 1;
return 0;
}
core_initcall(proc_ppc64_create);