Release 4.15 arch/s390/pci/pci_insn.c
// SPDX-License-Identifier: GPL-2.0
/*
* s390 specific pci instructions
*
* Copyright IBM Corp. 2013
*/
#include <linux/export.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <asm/facility.h>
#include <asm/pci_insn.h>
#include <asm/pci_debug.h>
#include <asm/processor.h>
#define ZPCI_INSN_BUSY_DELAY 1
/* 1 microsecond */
static inline void zpci_err_insn(u8 cc, u8 status, u64 req, u64 offset)
{
struct {
u64 req;
u64 offset;
u8 cc;
u8 status;
} __packed data = {req, offset, cc, status};
zpci_err_hex(&data, sizeof(data));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 58 | 100.00% | 2 | 100.00% |
| Total | 58 | 100.00% | 2 | 100.00% |
/* Modify PCI Function Controls */
static inline u8 __mpcifc(u64 req, struct zpci_fib *fib, u8 *status)
{
u8 cc;
asm volatile (
" .insn rxy,0xe300000000d0,%[req],%[fib]\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=d" (cc), [req] "+d" (req), [fib] "+Q" (*fib)
: : "cc");
*status = req >> 24 & 0xff;
return cc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 37 | 100.00% | 1 | 100.00% |
| Total | 37 | 100.00% | 1 | 100.00% |
u8 zpci_mod_fc(u64 req, struct zpci_fib *fib, u8 *status)
{
u8 cc;
do {
cc = __mpcifc(req, fib, status);
if (cc == 2)
msleep(ZPCI_INSN_BUSY_DELAY);
} while (cc == 2);
if (cc)
zpci_err_insn(cc, *status, req, 0);
return cc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 70 | 98.59% | 3 | 75.00% |
| Martin Schwidefsky | 1 | 1.41% | 1 | 25.00% |
| Total | 71 | 100.00% | 4 | 100.00% |
/* Refresh PCI Translations */
static inline u8 __rpcit(u64 fn, u64 addr, u64 range, u8 *status)
{
register u64 __addr asm("2") = addr;
register u64 __range asm("3") = range;
u8 cc;
asm volatile (
" .insn rre,0xb9d30000,%[fn],%[addr]\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=d" (cc), [fn] "+d" (fn)
: [addr] "d" (__addr), "d" (__range)
: "cc");
*status = fn >> 24 & 0xff;
return cc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 58 | 100.00% | 1 | 100.00% |
| Total | 58 | 100.00% | 1 | 100.00% |
int zpci_refresh_trans(u64 fn, u64 addr, u64 range)
{
u8 cc, status;
do {
cc = __rpcit(fn, addr, range, &status);
if (cc == 2)
udelay(ZPCI_INSN_BUSY_DELAY);
} while (cc == 2);
if (cc)
zpci_err_insn(cc, status, addr, range);
if (cc == 1 && (status == 4 || status == 16))
return -ENOMEM;
return (cc) ? -EIO : 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 98 | 98.99% | 3 | 75.00% |
| Martin Schwidefsky | 1 | 1.01% | 1 | 25.00% |
| Total | 99 | 100.00% | 4 | 100.00% |
/* Set Interruption Controls */
int zpci_set_irq_ctrl(u16 ctl, char *unused, u8 isc)
{
if (!test_facility(72))
return -EIO;
asm volatile (
" .insn rsy,0xeb00000000d1,%[ctl],%[isc],%[u]\n"
: : [ctl] "d" (ctl), [isc] "d" (isc << 27), [u] "Q" (*unused));
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 16 | 48.48% | 1 | 33.33% |
| Christian Bornträger | 16 | 48.48% | 1 | 33.33% |
| Martin Schwidefsky | 1 | 3.03% | 1 | 33.33% |
| Total | 33 | 100.00% | 3 | 100.00% |
/* PCI Load */
static inline int ____pcilg(u64 *data, u64 req, u64 offset, u8 *status)
{
register u64 __req asm("2") = req;
register u64 __offset asm("3") = offset;
int cc = -ENXIO;
u64 __data;
asm volatile (
" .insn rre,0xb9d20000,%[data],%[req]\n"
"0: ipm %[cc]\n"
" srl %[cc],28\n"
"1:\n"
EX_TABLE(0b, 1b)
: [cc] "+d" (cc), [data] "=d" (__data), [req] "+d" (__req)
: "d" (__offset)
: "cc");
*status = __req >> 24 & 0xff;
*data = __data;
return cc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 60 | 85.71% | 2 | 66.67% |
| Heiko Carstens | 10 | 14.29% | 1 | 33.33% |
| Total | 70 | 100.00% | 3 | 100.00% |
static inline int __pcilg(u64 *data, u64 req, u64 offset, u8 *status)
{
u64 __data;
int cc;
cc = ____pcilg(&__data, req, offset, status);
if (!cc)
*data = __data;
return cc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Heiko Carstens | 40 | 74.07% | 1 | 33.33% |
| Sebastian Ott | 14 | 25.93% | 2 | 66.67% |
| Total | 54 | 100.00% | 3 | 100.00% |
int zpci_load(u64 *data, u64 req, u64 offset)
{
u8 status;
int cc;
do {
cc = __pcilg(data, req, offset, &status);
if (cc == 2)
udelay(ZPCI_INSN_BUSY_DELAY);
} while (cc == 2);
if (cc)
zpci_err_insn(cc, status, req, offset);
return (cc > 0) ? -EIO : cc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 82 | 98.80% | 3 | 75.00% |
| Martin Schwidefsky | 1 | 1.20% | 1 | 25.00% |
| Total | 83 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL_GPL(zpci_load);
/* PCI Store */
static inline int __pcistg(u64 data, u64 req, u64 offset, u8 *status)
{
register u64 __req asm("2") = req;
register u64 __offset asm("3") = offset;
int cc = -ENXIO;
asm volatile (
" .insn rre,0xb9d00000,%[data],%[req]\n"
"0: ipm %[cc]\n"
" srl %[cc],28\n"
"1:\n"
EX_TABLE(0b, 1b)
: [cc] "+d" (cc), [req] "+d" (__req)
: "d" (__offset), [data] "d" (data)
: "cc");
*status = __req >> 24 & 0xff;
return cc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 61 | 100.00% | 2 | 100.00% |
| Total | 61 | 100.00% | 2 | 100.00% |
int zpci_store(u64 data, u64 req, u64 offset)
{
u8 status;
int cc;
do {
cc = __pcistg(data, req, offset, &status);
if (cc == 2)
udelay(ZPCI_INSN_BUSY_DELAY);
} while (cc == 2);
if (cc)
zpci_err_insn(cc, status, req, offset);
return (cc > 0) ? -EIO : cc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 81 | 98.78% | 3 | 75.00% |
| Martin Schwidefsky | 1 | 1.22% | 1 | 25.00% |
| Total | 82 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL_GPL(zpci_store);
/* PCI Store Block */
static inline int __pcistb(const u64 *data, u64 req, u64 offset, u8 *status)
{
int cc = -ENXIO;
asm volatile (
" .insn rsy,0xeb00000000d0,%[req],%[offset],%[data]\n"
"0: ipm %[cc]\n"
" srl %[cc],28\n"
"1:\n"
EX_TABLE(0b, 1b)
: [cc] "+d" (cc), [req] "+d" (req)
: [offset] "d" (offset), [data] "Q" (*data)
: "cc");
*status = req >> 24 & 0xff;
return cc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 43 | 100.00% | 2 | 100.00% |
| Total | 43 | 100.00% | 2 | 100.00% |
int zpci_store_block(const u64 *data, u64 req, u64 offset)
{
u8 status;
int cc;
do {
cc = __pcistb(data, req, offset, &status);
if (cc == 2)
udelay(ZPCI_INSN_BUSY_DELAY);
} while (cc == 2);
if (cc)
zpci_err_insn(cc, status, req, offset);
return (cc > 0) ? -EIO : cc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 83 | 98.81% | 3 | 75.00% |
| Martin Schwidefsky | 1 | 1.19% | 1 | 25.00% |
| Total | 84 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL_GPL(zpci_store_block);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Sebastian Ott | 803 | 91.04% | 7 | 63.64% |
| Heiko Carstens | 50 | 5.67% | 1 | 9.09% |
| Christian Bornträger | 19 | 2.15% | 1 | 9.09% |
| Martin Schwidefsky | 9 | 1.02% | 1 | 9.09% |
| Greg Kroah-Hartman | 1 | 0.11% | 1 | 9.09% |
| Total | 882 | 100.00% | 11 | 100.00% |
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