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qemu-patch-raspberry4
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pci-hotplug-old: Has been dead for five major releases, bury 

Commit 79ca616 (v1.6.0) accidentally disabled legacy x86-only HMP
commands pci_add, pci_del: it defined CONFIG_PCI_HOTPLUG only as make
variable, not as preprocessor macro, killing the code conditional on
defined(CONFIG_PCI_HOTPLUG_OLD).

In all this time, nobody reported the loss.  I only noticed it when I
tried to test some error reporting change that forced me to touch this
old crap again.

Fun: git-log hw/pci/pci-hotplug-old.c shows our faith in the backward
compatibility god has been strong enough to sacrifice at its altar
about a dozen times, but not strong enough to even once verify the
legacy feature's still there, let alone works.

Remove the commands along with the code backing them.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
stable-2.3
Markus Armbruster 2015-02-26 17:21:13 +01:00 committed by Michael S. Tsirkin
parent 6dbcb81956
commit f51074cdc6
10 changed files with 3 additions and 400 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
default-configs/i386-softmmu.mak
View File

@ -26,7 +26,6 @@ CONFIG_APPLESMC=y
CONFIG_I8259=y
CONFIG_PFLASH_CFI01=y
CONFIG_TPM_TIS=$(CONFIG_TPM)
CONFIG_PCI_HOTPLUG_OLD=y
CONFIG_MC146818RTC=y
CONFIG_PAM=y
CONFIG_PCI_PIIX=y

1
default-configs/x86_64-softmmu.mak
View File

@ -26,7 +26,6 @@ CONFIG_APPLESMC=y
CONFIG_I8259=y
CONFIG_PFLASH_CFI01=y
CONFIG_TPM_TIS=$(CONFIG_TPM)
CONFIG_PCI_HOTPLUG_OLD=y
CONFIG_MC146818RTC=y
CONFIG_PAM=y
CONFIG_PCI_PIIX=y

7
device-hotplug.c
View File

@ -30,7 +30,7 @@
#include "sysemu/sysemu.h"
#include "monitor/monitor.h"
DriveInfo *add_init_drive(const char *optstr)
static DriveInfo *add_init_drive(const char *optstr)
{
DriveInfo *dinfo;
QemuOpts *opts;
@ -69,9 +69,8 @@ void hmp_drive_add(Monitor *mon, const QDict *qdict)
monitor_printf(mon, "OK\n");
break;
default:
if (pci_drive_hot_add(mon, qdict, dinfo)) {
goto err;
}
monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
goto err;
}
return;

32
hmp-commands.hx
View File

@ -1147,38 +1147,6 @@ STEXI
@item drive_add
@findex drive_add
Add drive to PCI storage controller.
ETEXI
#if defined(CONFIG_PCI_HOTPLUG_OLD)
{
.name = "pci_add",
.args_type = "pci_addr:s,type:s,opts:s?",
.params = "auto|[[<domain>:]<bus>:]<slot> nic|storage [[vlan=n][,macaddr=addr][,model=type]] [file=file][,if=type][,bus=nr]...",
.help = "hot-add PCI device",
.mhandler.cmd = hmp_pci_add,
},
#endif
STEXI
@item pci_add
@findex pci_add
Hot-add PCI device.
ETEXI
#if defined(CONFIG_PCI_HOTPLUG_OLD)
{
.name = "pci_del",
.args_type = "pci_addr:s",
.params = "[[<domain>:]<bus>:]<slot>",
.help = "hot remove PCI device",
.mhandler.cmd = hmp_pci_del,
},
#endif
STEXI
@item pci_del
@findex pci_del
Hot remove PCI device.
ETEXI
{

2
hw/pci/Makefile.objs
View File

@ -7,5 +7,3 @@ common-obj-$(CONFIG_PCI) += pcie.o pcie_aer.o pcie_port.o
common-obj-$(call lnot,$(CONFIG_PCI)) += pci-stub.o
common-obj-$(CONFIG_ALL) += pci-stub.o
common-obj-$(CONFIG_PCI_HOTPLUG_OLD) += pci-hotplug-old.o

342
hw/pci/pci-hotplug-old.c
View File

@ -1,342 +0,0 @@
/*
* Deprecated PCI hotplug interface support
* This covers the old pci_add / pci_del command, whereas the more general
* device_add / device_del commands are now preferred.
*
* Copyright (c) 2004 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hw/hw.h"
#include "hw/boards.h"
#include "hw/pci/pci.h"
#include "net/net.h"
#include "hw/i386/pc.h"
#include "monitor/monitor.h"
#include "hw/scsi/scsi.h"
#include "hw/virtio/virtio-blk.h"
#include "qemu/config-file.h"
#include "sysemu/block-backend.h"
#include "qapi/error.h"
static int pci_read_devaddr(Monitor *mon, const char *addr,
int *busp, unsigned *slotp)
{
int dom;
/* strip legacy tag */
if (!strncmp(addr, "pci_addr=", 9)) {
addr += 9;
}
if (pci_parse_devaddr(addr, &dom, busp, slotp, NULL)) {
monitor_printf(mon, "Invalid pci address\n");
return -1;
}
if (dom != 0) {
monitor_printf(mon, "Multiple PCI domains not supported, use device_add\n");
return -1;
}
return 0;
}
static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
const char *devaddr,
const char *opts_str)
{
Error *local_err = NULL;
QemuOpts *opts;
PCIBus *root = pci_find_primary_bus();
PCIBus *bus;
int ret, devfn;
if (!root) {
monitor_printf(mon, "no primary PCI bus (if there are multiple"
" PCI roots, you must use device_add instead)");
return NULL;
}
bus = pci_get_bus_devfn(&devfn, root, devaddr);
if (!bus) {
monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
return NULL;
}
if (!qbus_is_hotpluggable(BUS(bus))) {
monitor_printf(mon, "PCI bus doesn't support hotplug\n");
return NULL;
}
opts = qemu_opts_parse(qemu_find_opts("net"), opts_str ? opts_str : "", 0);
if (!opts) {
return NULL;
}
qemu_opt_set(opts, "type", "nic");
ret = net_client_init(opts, 0, &local_err);
if (local_err) {
qerror_report_err(local_err);
error_free(local_err);
return NULL;
}
if (nd_table[ret].devaddr) {
monitor_printf(mon, "Parameter addr not supported\n");
return NULL;
}
return pci_nic_init(&nd_table[ret], root, "rtl8139", devaddr);
}
static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
DriveInfo *dinfo, int printinfo)
{
SCSIBus *scsibus;
SCSIDevice *scsidev;
Error *local_err = NULL;
scsibus = (SCSIBus *)
object_dynamic_cast(OBJECT(QLIST_FIRST(&adapter->child_bus)),
TYPE_SCSI_BUS);
if (!scsibus) {
error_report("Device is not a SCSI adapter");
return -1;
}
/*
* drive_init() tries to find a default for dinfo->unit. Doesn't
* work at all for hotplug though as we assign the device to a
* specific bus instead of the first bus with spare scsi ids.
*
* Ditch the calculated value and reload from option string (if
* specified).
*/
dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
dinfo->bus = scsibus->busnr;
scsidev = scsi_bus_legacy_add_drive(scsibus,
blk_by_legacy_dinfo(dinfo),
dinfo->unit, false, -1, NULL,
&local_err);
if (!scsidev) {
error_report_err(local_err);
return -1;
}
dinfo->unit = scsidev->id;
if (printinfo)
monitor_printf(mon, "OK bus %d, unit %d\n",
scsibus->busnr, scsidev->id);
return 0;
}
int pci_drive_hot_add(Monitor *mon, const QDict *qdict, DriveInfo *dinfo)
{
int pci_bus;
unsigned slot;
PCIBus *root = pci_find_primary_bus();
PCIDevice *dev;
const char *pci_addr = qdict_get_str(qdict, "pci_addr");
switch (dinfo->type) {
case IF_SCSI:
if (!root) {
monitor_printf(mon, "no primary PCI bus (if there are multiple"
" PCI roots, you must use device_add instead)");
goto err;
}
if (pci_read_devaddr(mon, pci_addr, &pci_bus, &slot)) {
goto err;
}
dev = pci_find_device(root, pci_bus, PCI_DEVFN(slot, 0));
if (!dev) {
monitor_printf(mon, "no pci device with address %s\n", pci_addr);
goto err;
}
if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
goto err;
}
break;
default:
monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
goto err;
}
return 0;
err:
return -1;
}
static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
const char *devaddr,
const char *opts)
{
PCIDevice *dev;
DriveInfo *dinfo = NULL;
int type = -1;
char buf[128];
PCIBus *root = pci_find_primary_bus();
PCIBus *bus;
int devfn;
if (get_param_value(buf, sizeof(buf), "if", opts)) {
if (!strcmp(buf, "scsi"))
type = IF_SCSI;
else if (!strcmp(buf, "virtio")) {
type = IF_VIRTIO;
} else {
monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
return NULL;
}
} else {
monitor_printf(mon, "no if= specified\n");
return NULL;
}
if (get_param_value(buf, sizeof(buf), "file", opts)) {
dinfo = add_init_drive(opts);
if (!dinfo)
return NULL;
if (dinfo->devaddr) {
monitor_printf(mon, "Parameter addr not supported\n");
return NULL;
}
} else {
dinfo = NULL;
}
if (!root) {
monitor_printf(mon, "no primary PCI bus (if there are multiple"
" PCI roots, you must use device_add instead)");
return NULL;
}
bus = pci_get_bus_devfn(&devfn, root, devaddr);
if (!bus) {
monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
return NULL;
}
if (!qbus_is_hotpluggable(BUS(bus))) {
monitor_printf(mon, "PCI bus doesn't support hotplug\n");
return NULL;
}
switch (type) {
case IF_SCSI:
dev = pci_create(bus, devfn, "lsi53c895a");
if (qdev_init(&dev->qdev) < 0)
dev = NULL;
if (dev && dinfo) {
if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
qdev_unplug(&dev->qdev, NULL);
dev = NULL;
}
}
break;
case IF_VIRTIO:
if (!dinfo) {
monitor_printf(mon, "virtio requires a backing file/device.\n");
return NULL;
}
dev = pci_create(bus, devfn, "virtio-blk-pci");
if (qdev_prop_set_drive(&dev->qdev, "drive",
blk_by_legacy_dinfo(dinfo)) < 0) {
object_unparent(OBJECT(dev));
dev = NULL;
break;
}
if (qdev_init(&dev->qdev) < 0)
dev = NULL;
break;
default:
dev = NULL;
}
return dev;
}
void hmp_pci_add(Monitor *mon, const QDict *qdict)
{
PCIDevice *dev = NULL;
const char *pci_addr = qdict_get_str(qdict, "pci_addr");
const char *type = qdict_get_str(qdict, "type");
const char *opts = qdict_get_try_str(qdict, "opts");
/* strip legacy tag */
if (!strncmp(pci_addr, "pci_addr=", 9)) {
pci_addr += 9;
}
if (!opts) {
opts = "";
}
if (!strcmp(pci_addr, "auto"))
pci_addr = NULL;
if (strcmp(type, "nic") == 0) {
dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
} else if (strcmp(type, "storage") == 0) {
dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
} else {
monitor_printf(mon, "invalid type: %s\n", type);
}
if (dev) {
monitor_printf(mon, "OK root bus %s, bus %d, slot %d, function %d\n",
pci_root_bus_path(dev),
pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
PCI_FUNC(dev->devfn));
} else
monitor_printf(mon, "failed to add %s\n", opts);
}
static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
{
PCIBus *root = pci_find_primary_bus();
PCIDevice *d;
int bus;
unsigned slot;
Error *local_err = NULL;
if (!root) {
monitor_printf(mon, "no primary PCI bus (if there are multiple"
" PCI roots, you must use device_del instead)");
return -1;
}
if (pci_read_devaddr(mon, pci_addr, &bus, &slot)) {
return -1;
}
d = pci_find_device(root, bus, PCI_DEVFN(slot, 0));
if (!d) {
monitor_printf(mon, "slot %d empty\n", slot);
return -1;
}
qdev_unplug(&d->qdev, &local_err);
if (local_err) {
monitor_printf(mon, "%s\n", error_get_pretty(local_err));
error_free(local_err);
return -1;
}
return 0;
}
void hmp_pci_del(Monitor *mon, const QDict *qdict)
{
pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
}

2
include/sysemu/blockdev.h
View File

@ -63,8 +63,6 @@ DriveInfo *drive_new(QemuOpts *arg, BlockInterfaceType block_default_type);
/* device-hotplug */
DriveInfo *add_init_drive(const char *opts);
void qmp_change_blockdev(const char *device, const char *filename,
const char *format, Error **errp);
void hmp_commit(Monitor *mon, const QDict *qdict);

5
include/sysemu/sysemu.h
View File

@ -174,11 +174,6 @@ extern int nb_option_roms;
extern const char *prom_envs[MAX_PROM_ENVS];
extern unsigned int nb_prom_envs;
/* pci-hotplug */
void hmp_pci_add(Monitor *mon, const QDict *qdict);
int pci_drive_hot_add(Monitor *mon, const QDict *qdict, DriveInfo *dinfo);
void hmp_pci_del(Monitor *mon, const QDict *qdict);
/* generic hotplug */
void hmp_drive_add(Monitor *mon, const QDict *qdict);

1
stubs/Makefile.objs
View File

@ -24,7 +24,6 @@ stub-obj-y += mon-printf.o
stub-obj-y += mon-set-error.o
stub-obj-y += monitor-init.o
stub-obj-y += notify-event.o
stub-obj-y += pci-drive-hot-add.o
stub-obj-$(CONFIG_SPICE) += qemu-chr-open-spice.o
stub-obj-y += qtest.o
stub-obj-y += reset.o

10
stubs/pci-drive-hot-add.c
View File

@ -1,10 +0,0 @@
#include <monitor/monitor.h>
#include <sysemu/sysemu.h>
#include <sysemu/blockdev.h>
int pci_drive_hot_add(Monitor *mon, const QDict *qdict, DriveInfo *dinfo)
{
/* On non-x86 we don't do PCI hotplug */
monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type);
return -1;
}