Release 4.14 arch/sparc/prom/ranges.c
// SPDX-License-Identifier: GPL-2.0
/*
* ranges.c: Handle ranges in newer proms for obio/sbus.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
*/
#include <linux/init.h>
#include <linux/module.h>
#include <asm/openprom.h>
#include <asm/oplib.h>
#include <asm/types.h>
static struct linux_prom_ranges promlib_obio_ranges[PROMREG_MAX];
static int num_obio_ranges;
/* Adjust register values based upon the ranges parameters. */
static void prom_adjust_regs(struct linux_prom_registers *regp, int nregs,
struct linux_prom_ranges *rangep, int nranges)
{
int regc, rngc;
for (regc = 0; regc < nregs; regc++) {
for (rngc = 0; rngc < nranges; rngc++)
if (regp[regc].which_io == rangep[rngc].ot_child_space)
break; /* Fount it */
if (rngc == nranges) /* oops */
prom_printf("adjust_regs: Could not find range with matching bus type...\n");
regp[regc].which_io = rangep[rngc].ot_parent_space;
regp[regc].phys_addr -= rangep[rngc].ot_child_base;
regp[regc].phys_addr += rangep[rngc].ot_parent_base;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 112 | 88.19% | 1 | 50.00% |
| Linus Torvalds | 15 | 11.81% | 1 | 50.00% |
| Total | 127 | 100.00% | 2 | 100.00% |
static void prom_adjust_ranges(struct linux_prom_ranges *ranges1, int nranges1,
struct linux_prom_ranges *ranges2, int nranges2)
{
int rng1c, rng2c;
for (rng1c = 0; rng1c < nranges1; rng1c++) {
for (rng2c = 0; rng2c < nranges2; rng2c++)
if (ranges1[rng1c].ot_parent_space == ranges2[rng2c].ot_child_space &&
ranges1[rng1c].ot_parent_base >= ranges2[rng2c].ot_child_base &&
ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base > 0U)
break;
if (rng2c == nranges2) /* oops */
prom_printf("adjust_ranges: Could not find matching bus type...\n");
else if (ranges1[rng1c].ot_parent_base + ranges1[rng1c].or_size > ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size)
ranges1[rng1c].or_size = ranges2[rng2c].ot_child_base + ranges2[rng2c].or_size - ranges1[rng1c].ot_parent_base;
ranges1[rng1c].ot_parent_space = ranges2[rng2c].ot_parent_space;
ranges1[rng1c].ot_parent_base += ranges2[rng2c].ot_parent_base;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 207 | 99.52% | 2 | 66.67% |
| Sam Ravnborg | 1 | 0.48% | 1 | 33.33% |
| Total | 208 | 100.00% | 3 | 100.00% |
/* Apply probed obio ranges to registers passed, if no ranges return. */
void prom_apply_obio_ranges(struct linux_prom_registers *regs, int nregs)
{
if (num_obio_ranges)
prom_adjust_regs(regs, nregs, promlib_obio_ranges, num_obio_ranges);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 27 | 96.43% | 1 | 50.00% |
| netmonk@netmonk.org | 1 | 3.57% | 1 | 50.00% |
| Total | 28 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(prom_apply_obio_ranges);
void __init prom_ranges_init(void)
{
phandle node, obio_node;
int success;
num_obio_ranges = 0;
/* Check for obio and sbus ranges. */
node = prom_getchild(prom_root_node);
obio_node = prom_searchsiblings(node, "obio");
if (obio_node) {
success = prom_getproperty(obio_node, "ranges",
(char *) promlib_obio_ranges,
sizeof(promlib_obio_ranges));
if (success != -1)
num_obio_ranges = (success / sizeof(struct linux_prom_ranges));
}
if (num_obio_ranges)
prom_printf("PROMLIB: obio_ranges %d\n", num_obio_ranges);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 92 | 98.92% | 3 | 75.00% |
| Andres Salomon | 1 | 1.08% | 1 | 25.00% |
| Total | 93 | 100.00% | 4 | 100.00% |
void prom_apply_generic_ranges(phandle node, phandle parent,
struct linux_prom_registers *regs, int nregs)
{
int success;
int num_ranges;
struct linux_prom_ranges ranges[PROMREG_MAX];
success = prom_getproperty(node, "ranges",
(char *) ranges,
sizeof(ranges));
if (success != -1) {
num_ranges = (success / sizeof(struct linux_prom_ranges));
if (parent) {
struct linux_prom_ranges parent_ranges[PROMREG_MAX];
int num_parent_ranges;
success = prom_getproperty(parent, "ranges",
(char *) parent_ranges,
sizeof(parent_ranges));
if (success != -1) {
num_parent_ranges = (success / sizeof(struct linux_prom_ranges));
prom_adjust_ranges(ranges, num_ranges, parent_ranges, num_parent_ranges);
}
}
prom_adjust_regs(regs, nregs, ranges, num_ranges);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 149 | 98.03% | 2 | 66.67% |
| Andres Salomon | 3 | 1.97% | 1 | 33.33% |
| Total | 152 | 100.00% | 3 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 611 | 94.88% | 6 | 46.15% |
| Linus Torvalds | 15 | 2.33% | 1 | 7.69% |
| Sam Ravnborg | 11 | 1.71% | 2 | 15.38% |
| Andres Salomon | 4 | 0.62% | 1 | 7.69% |
| Greg Kroah-Hartman | 1 | 0.16% | 1 | 7.69% |
| netmonk@netmonk.org | 1 | 0.16% | 1 | 7.69% |
| Adrian Bunk | 1 | 0.16% | 1 | 7.69% |
| Total | 644 | 100.00% | 13 | 100.00% |
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