[qemu.git] / hw / pci-hotplug.c

/*
 * QEMU PCI hotplug support
 *
 * 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.h"
#include "boards.h"
#include "pci.h"
#include "net.h"
#include "sysemu.h"
#include "pc.h"
#include "monitor.h"
#include "block_int.h"
#include "scsi.h"
#include "virtio-blk.h"
#include "qemu-config.h"

#if defined(TARGET_I386)
static PCIDevice *qemu_pci_hot_add_nic(Monitor *mon,
                                       const char *devaddr,
                                       const char *opts_str)
{
    QemuOpts *opts;
    PCIBus *bus;
    int ret, devfn;

    bus = pci_get_bus_devfn(&devfn, devaddr);
    if (!bus) {
        monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
        return NULL;
    }
    if (!((BusState*)bus)->allow_hotplug) {
        monitor_printf(mon, "PCI bus doesn't support hotplug\n");
        return NULL;
    }

    opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", 0);
    if (!opts) {
        return NULL;
    }

    qemu_opt_set(opts, "type", "nic");

    ret = net_client_init(mon, opts, 0);
    if (ret < 0)
        return NULL;
    if (nd_table[ret].devaddr) {
        monitor_printf(mon, "Parameter addr not supported\n");
        return NULL;
    }
    return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
}

static int scsi_hot_add(Monitor *mon, DeviceState *adapter,
                        DriveInfo *dinfo, int printinfo)
{
    SCSIBus *scsibus;
    SCSIDevice *scsidev;

    scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus));
    if (!scsibus || strcmp(scsibus->qbus.info->name, "SCSI") != 0) {
        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);
    scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo, dinfo->unit);
    dinfo->unit = scsidev->id;

    if (printinfo)
        monitor_printf(mon, "OK bus %d, unit %d\n",
                       scsibus->busnr, scsidev->id);
    return 0;
}

void drive_hot_add(Monitor *mon, const QDict *qdict)
{
    int dom, pci_bus;
    unsigned slot;
    int type;
    PCIDevice *dev;
    DriveInfo *dinfo = NULL;
    const char *pci_addr = qdict_get_str(qdict, "pci_addr");
    const char *opts = qdict_get_str(qdict, "opts");

    dinfo = add_init_drive(opts);
    if (!dinfo)
        goto err;
    if (dinfo->devaddr) {
        monitor_printf(mon, "Parameter addr not supported\n");
        goto err;
    }
    type = dinfo->type;

    switch (type) {
    case IF_SCSI:
        if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
            goto err;
        }
        dev = pci_find_device(pci_find_root_bus(0), pci_bus, 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;
    case IF_NONE:
        monitor_printf(mon, "OK\n");
        break;
    default:
        monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
        goto err;
    }
    return;

err:
    if (dinfo)
        drive_uninit(dinfo);
    return;
}

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 *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;
    }

    bus = pci_get_bus_devfn(&devfn, devaddr);
    if (!bus) {
        monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
        return NULL;
    }
    if (!((BusState*)bus)->allow_hotplug) {
        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);
                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");
        qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
        if (qdev_init(&dev->qdev) < 0)
            dev = NULL;
        break;
    default:
        dev = NULL;
    }
    return dev;
}

void pci_device_hot_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 domain %d, bus %d, slot %d, function %d\n",
                       0, pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
                       PCI_FUNC(dev->devfn));
    } else
        monitor_printf(mon, "failed to add %s\n", opts);
}
#endif

int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
{
    PCIDevice *d;
    int dom, bus;
    unsigned slot;

    if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
        return -1;
    }

    d = pci_find_device(pci_find_root_bus(0), bus, slot, 0);
    if (!d) {
        monitor_printf(mon, "slot %d empty\n", slot);
        return -1;
    }
    return qdev_unplug(&d->qdev);
}

int do_pci_device_hot_remove(Monitor *mon, const QDict *qdict,
                             QObject **ret_data)
{
    return pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
}
Commit	Line	Data
6f338c34 AL	1	/*
	2	* QEMU PCI hotplug support
	3	*
	4	* Copyright (c) 2004 Fabrice Bellard
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
	24
	25	#include "hw.h"
	26	#include "boards.h"
	27	#include "pci.h"
	28	#include "net.h"
	29	#include "sysemu.h"
	30	#include "pc.h"
376253ec	31	#include "monitor.h"
6f338c34	32	#include "block_int.h"
43b443b6	33	#include "scsi.h"
6f338c34	34	#include "virtio-blk.h"
c59c7ea9	35	#include "qemu-config.h"
6f338c34	36
ce88f890	37	#if defined(TARGET_I386)
1f5f6638	38	static PCIDevice qemu_pci_hot_add_nic(Monitor mon,
c59c7ea9 MM	39	const char *devaddr,
c59c7ea9 MM	40	const char *opts_str)
6f338c34	41	{
c59c7ea9	42	QemuOpts *opts;
53e0d8af GH	43	PCIBus *bus;
	44	int ret, devfn;
	45
	46	bus = pci_get_bus_devfn(&devfn, devaddr);
	47	if (!bus) {
	48	monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
	49	return NULL;
	50	}
	51	if (!((BusState*)bus)->allow_hotplug) {
	52	monitor_printf(mon, "PCI bus doesn't support hotplug\n");
	53	return NULL;
	54	}
6f338c34	55
8212c64f	56	opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", 0);
c59c7ea9	57	if (!opts) {
c59c7ea9 MM	58	return NULL;
	59	}
	60
	61	qemu_opt_set(opts, "type", "nic");
	62
f6b134ac	63	ret = net_client_init(mon, opts, 0);
eefb4091	64	if (ret < 0)
6f338c34	65	return NULL;
5607c388 MA	66	if (nd_table[ret].devaddr) {
	67	monitor_printf(mon, "Parameter addr not supported\n");
	68	return NULL;
	69	}
1f5f6638	70	return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
6f338c34 AL	71	}
6f338c34 AL	72
6fdb03d5 MA	73	static int scsi_hot_add(Monitor mon, DeviceState adapter,
6fdb03d5 MA	74	DriveInfo *dinfo, int printinfo)
30d335d6 GH	75	{
	76	SCSIBus *scsibus;
	77	SCSIDevice *scsidev;
	78
	79	scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus));
	80	if (!scsibus \|\| strcmp(scsibus->qbus.info->name, "SCSI") != 0) {
1ecda02b	81	error_report("Device is not a SCSI adapter");
30d335d6 GH	82	return -1;
	83	}
	84
	85	/*
	86	* drive_init() tries to find a default for dinfo->unit. Doesn't
	87	* work at all for hotplug though as we assign the device to a
	88	* specific bus instead of the first bus with spare scsi ids.
	89	*
	90	* Ditch the calculated value and reload from option string (if
	91	* specified).
	92	*/
	93	dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
	94	scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo, dinfo->unit);
11f4d7f4	95	dinfo->unit = scsidev->id;
30d335d6 GH	96
30d335d6 GH	97	if (printinfo)
6fdb03d5 MA	98	monitor_printf(mon, "OK bus %d, unit %d\n",
6fdb03d5 MA	99	scsibus->busnr, scsidev->id);
30d335d6 GH	100	return 0;
	101	}
	102
f18c16de	103	void drive_hot_add(Monitor mon, const QDict qdict)
6f338c34 AL	104	{
	105	int dom, pci_bus;
	106	unsigned slot;
7f5b7d3e	107	int type;
6f338c34	108	PCIDevice *dev;
4db49dc0	109	DriveInfo *dinfo = NULL;
f18c16de LC	110	const char *pci_addr = qdict_get_str(qdict, "pci_addr");
f18c16de LC	111	const char *opts = qdict_get_str(qdict, "opts");
6f338c34	112
751c6a17 GH	113	dinfo = add_init_drive(opts);
751c6a17 GH	114	if (!dinfo)
4db49dc0	115	goto err;
751c6a17	116	if (dinfo->devaddr) {
c2cc47a4	117	monitor_printf(mon, "Parameter addr not supported\n");
4db49dc0	118	goto err;
c2cc47a4	119	}
751c6a17	120	type = dinfo->type;
6f338c34 AL	121
	122	switch (type) {
	123	case IF_SCSI:
4db49dc0 GH	124	if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
	125	goto err;
	126	}
c469e1dd	127	dev = pci_find_device(pci_find_root_bus(0), pci_bus, slot, 0);
4db49dc0 GH	128	if (!dev) {
	129	monitor_printf(mon, "no pci device with address %s\n", pci_addr);
	130	goto err;
	131	}
6fdb03d5	132	if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
30d335d6 GH	133	goto err;
30d335d6 GH	134	}
6f338c34	135	break;
7101174e GH	136	case IF_NONE:
	137	monitor_printf(mon, "OK\n");
	138	break;
6f338c34	139	default:
376253ec	140	monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
4db49dc0	141	goto err;
6f338c34	142	}
4db49dc0	143	return;
6f338c34	144
4db49dc0 GH	145	err:
	146	if (dinfo)
	147	drive_uninit(dinfo);
6f338c34 AL	148	return;
	149	}
	150
1f5f6638 MA	151	static PCIDevice qemu_pci_hot_add_storage(Monitor mon,
1f5f6638 MA	152	const char *devaddr,
376253ec	153	const char *opts)
6f338c34	154	{
1f5f6638	155	PCIDevice *dev;
06c79f4e	156	DriveInfo *dinfo = NULL;
751c6a17	157	int type = -1;
6f338c34	158	char buf[128];
49bd1458 MA	159	PCIBus *bus;
49bd1458 MA	160	int devfn;
6f338c34 AL	161
	162	if (get_param_value(buf, sizeof(buf), "if", opts)) {
	163	if (!strcmp(buf, "scsi"))
	164	type = IF_SCSI;
	165	else if (!strcmp(buf, "virtio")) {
	166	type = IF_VIRTIO;
8707ecca AL	167	} else {
8707ecca AL	168	monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
1f5f6638	169	return NULL;
6f338c34 AL	170	}
6f338c34 AL	171	} else {
376253ec	172	monitor_printf(mon, "no if= specified\n");
1f5f6638	173	return NULL;
6f338c34 AL	174	}
	175
	176	if (get_param_value(buf, sizeof(buf), "file", opts)) {
751c6a17 GH	177	dinfo = add_init_drive(opts);
751c6a17 GH	178	if (!dinfo)
1f5f6638	179	return NULL;
751c6a17	180	if (dinfo->devaddr) {
c2cc47a4 MA	181	monitor_printf(mon, "Parameter addr not supported\n");
	182	return NULL;
	183	}
7432ff5d BS	184	} else {
7432ff5d BS	185	dinfo = NULL;
6f338c34 AL	186	}
6f338c34 AL	187
49bd1458 MA	188	bus = pci_get_bus_devfn(&devfn, devaddr);
	189	if (!bus) {
	190	monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
	191	return NULL;
	192	}
53e0d8af GH	193	if (!((BusState*)bus)->allow_hotplug) {
	194	monitor_printf(mon, "PCI bus doesn't support hotplug\n");
	195	return NULL;
	196	}
49bd1458	197
6f338c34 AL	198	switch (type) {
6f338c34 AL	199	case IF_SCSI:
499cf102	200	dev = pci_create(bus, devfn, "lsi53c895a");
5b684b5a GH	201	if (qdev_init(&dev->qdev) < 0)
5b684b5a GH	202	dev = NULL;
ec7efac4	203	if (dev && dinfo) {
6fdb03d5	204	if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
30d335d6 GH	205	qdev_unplug(&dev->qdev);
	206	dev = NULL;
	207	}
5b684b5a	208	}
6f338c34 AL	209	break;
6f338c34 AL	210	case IF_VIRTIO:
7432ff5d BS	211	if (!dinfo) {
	212	monitor_printf(mon, "virtio requires a backing file/device.\n");
	213	return NULL;
	214	}
499cf102	215	dev = pci_create(bus, devfn, "virtio-blk-pci");
d176c495	216	qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
5b684b5a GH	217	if (qdev_init(&dev->qdev) < 0)
5b684b5a GH	218	dev = NULL;
6f338c34	219	break;
1f5f6638 MA	220	default:
1f5f6638 MA	221	dev = NULL;
6f338c34	222	}
1f5f6638	223	return dev;
6f338c34 AL	224	}
6f338c34 AL	225
6c6a58ae	226	void pci_device_hot_add(Monitor mon, const QDict qdict)
6f338c34 AL	227	{
6f338c34 AL	228	PCIDevice *dev = NULL;
1d4daa91 LC	229	const char *pci_addr = qdict_get_str(qdict, "pci_addr");
	230	const char *type = qdict_get_str(qdict, "type");
	231	const char *opts = qdict_get_try_str(qdict, "opts");
6f338c34	232
e9283f8b JK	233	/* strip legacy tag */
	234	if (!strncmp(pci_addr, "pci_addr=", 9)) {
	235	pci_addr += 9;
6f338c34 AL	236	}
6f338c34 AL	237
a62acdc0 JK	238	if (!opts) {
	239	opts = "";
	240	}
	241
e9283f8b JK	242	if (!strcmp(pci_addr, "auto"))
e9283f8b JK	243	pci_addr = NULL;
6f338c34	244
395560c8	245	if (strcmp(type, "nic") == 0) {
e9283f8b	246	dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
395560c8	247	} else if (strcmp(type, "storage") == 0) {
e9283f8b	248	dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
395560c8	249	} else {
376253ec	250	monitor_printf(mon, "invalid type: %s\n", type);
395560c8	251	}
6f338c34 AL	252
6f338c34 AL	253	if (dev) {
6c6a58ae MA	254	monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
	255	0, pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
	256	PCI_FUNC(dev->devfn));
	257	} else
376253ec	258	monitor_printf(mon, "failed to add %s\n", opts);
6f338c34 AL	259	}
	260	#endif
	261
053801bc	262	int pci_device_hot_remove(Monitor mon, const char pci_addr)
6f338c34 AL	263	{
	264	PCIDevice *d;
	265	int dom, bus;
	266	unsigned slot;
	267
e9283f8b	268	if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
053801bc	269	return -1;
6f338c34 AL	270	}
6f338c34 AL	271
c469e1dd	272	d = pci_find_device(pci_find_root_bus(0), bus, slot, 0);
6f338c34	273	if (!d) {
376253ec	274	monitor_printf(mon, "slot %d empty\n", slot);
053801bc	275	return -1;
6f338c34	276	}
053801bc	277	return qdev_unplug(&d->qdev);
6f338c34 AL	278	}
6f338c34 AL	279
053801bc LC	280	int do_pci_device_hot_remove(Monitor mon, const QDict qdict,
053801bc LC	281	QObject **ret_data)
38183186	282	{
053801bc	283	return pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
38183186	284	}