[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 : "", NULL);
    if (!opts) {
        monitor_printf(mon, "parsing network options '%s' failed\n",
                       opts_str ? opts_str : "");
        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(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) {
        qemu_error("Device is not a SCSI adapter\n");
        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)
        qemu_error("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, bus;
    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;
    bus = drive_get_max_bus (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(&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:
        if (!dinfo) {
            monitor_printf(mon, "scsi requires a backing file/device.\n");
            return NULL;
        }
        dev = pci_create(bus, devfn, "lsi53c895a");
        if (qdev_init(&dev->qdev) < 0)
            dev = NULL;
        if (dev) {
            if (scsi_hot_add(&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

void 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;
    }

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

void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict,
                              QObject **ret_data)
{
    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
c59c7ea9 MM	56	opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", NULL);
	57	if (!opts) {
	58	monitor_printf(mon, "parsing network options '%s' failed\n",
	59	opts_str ? opts_str : "");
	60	return NULL;
	61	}
	62
	63	qemu_opt_set(opts, "type", "nic");
	64
f6b134ac	65	ret = net_client_init(mon, opts, 0);
eefb4091	66	if (ret < 0)
6f338c34	67	return NULL;
5607c388 MA	68	if (nd_table[ret].devaddr) {
	69	monitor_printf(mon, "Parameter addr not supported\n");
	70	return NULL;
	71	}
1f5f6638	72	return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
6f338c34 AL	73	}
6f338c34 AL	74
30d335d6 GH	75	static int scsi_hot_add(DeviceState adapter, DriveInfo dinfo, int printinfo)
	76	{
	77	SCSIBus *scsibus;
	78	SCSIDevice *scsidev;
	79
	80	scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus));
	81	if (!scsibus \|\| strcmp(scsibus->qbus.info->name, "SCSI") != 0) {
	82	qemu_error("Device is not a SCSI adapter\n");
	83	return -1;
	84	}
	85
	86	/*
	87	* drive_init() tries to find a default for dinfo->unit. Doesn't
	88	* work at all for hotplug though as we assign the device to a
	89	* specific bus instead of the first bus with spare scsi ids.
	90	*
	91	* Ditch the calculated value and reload from option string (if
	92	* specified).
	93	*/
	94	dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
	95	scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo, dinfo->unit);
11f4d7f4	96	dinfo->unit = scsidev->id;
30d335d6 GH	97
	98	if (printinfo)
	99	qemu_error("OK bus %d, unit %d\n", scsibus->busnr, scsidev->id);
	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;
751c6a17	107	int type, bus;
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	bus = drive_get_max_bus (type);
	122
	123	switch (type) {
	124	case IF_SCSI:
4db49dc0 GH	125	if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
	126	goto err;
	127	}
c469e1dd	128	dev = pci_find_device(pci_find_root_bus(0), pci_bus, slot, 0);
4db49dc0 GH	129	if (!dev) {
	130	monitor_printf(mon, "no pci device with address %s\n", pci_addr);
	131	goto err;
	132	}
30d335d6 GH	133	if (scsi_hot_add(&dev->qdev, dinfo, 1) != 0) {
	134	goto err;
	135	}
6f338c34	136	break;
7101174e GH	137	case IF_NONE:
	138	monitor_printf(mon, "OK\n");
	139	break;
6f338c34	140	default:
376253ec	141	monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
4db49dc0	142	goto err;
6f338c34	143	}
4db49dc0	144	return;
6f338c34	145
4db49dc0 GH	146	err:
	147	if (dinfo)
	148	drive_uninit(dinfo);
6f338c34 AL	149	return;
	150	}
	151
1f5f6638 MA	152	static PCIDevice qemu_pci_hot_add_storage(Monitor mon,
1f5f6638 MA	153	const char *devaddr,
376253ec	154	const char *opts)
6f338c34	155	{
1f5f6638	156	PCIDevice *dev;
06c79f4e	157	DriveInfo *dinfo = NULL;
751c6a17	158	int type = -1;
6f338c34	159	char buf[128];
49bd1458 MA	160	PCIBus *bus;
49bd1458 MA	161	int devfn;
6f338c34 AL	162
	163	if (get_param_value(buf, sizeof(buf), "if", opts)) {
	164	if (!strcmp(buf, "scsi"))
	165	type = IF_SCSI;
	166	else if (!strcmp(buf, "virtio")) {
	167	type = IF_VIRTIO;
8707ecca AL	168	} else {
8707ecca AL	169	monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
1f5f6638	170	return NULL;
6f338c34 AL	171	}
6f338c34 AL	172	} else {
376253ec	173	monitor_printf(mon, "no if= specified\n");
1f5f6638	174	return NULL;
6f338c34 AL	175	}
	176
	177	if (get_param_value(buf, sizeof(buf), "file", opts)) {
751c6a17 GH	178	dinfo = add_init_drive(opts);
751c6a17 GH	179	if (!dinfo)
1f5f6638	180	return NULL;
751c6a17	181	if (dinfo->devaddr) {
c2cc47a4 MA	182	monitor_printf(mon, "Parameter addr not supported\n");
	183	return NULL;
	184	}
7432ff5d BS	185	} else {
7432ff5d BS	186	dinfo = NULL;
6f338c34 AL	187	}
6f338c34 AL	188
49bd1458 MA	189	bus = pci_get_bus_devfn(&devfn, devaddr);
	190	if (!bus) {
	191	monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
	192	return NULL;
	193	}
53e0d8af GH	194	if (!((BusState*)bus)->allow_hotplug) {
	195	monitor_printf(mon, "PCI bus doesn't support hotplug\n");
	196	return NULL;
	197	}
49bd1458	198
6f338c34 AL	199	switch (type) {
6f338c34 AL	200	case IF_SCSI:
5b684b5a GH	201	if (!dinfo) {
	202	monitor_printf(mon, "scsi requires a backing file/device.\n");
	203	return NULL;
	204	}
499cf102	205	dev = pci_create(bus, devfn, "lsi53c895a");
5b684b5a GH	206	if (qdev_init(&dev->qdev) < 0)
	207	dev = NULL;
	208	if (dev) {
30d335d6 GH	209	if (scsi_hot_add(&dev->qdev, dinfo, 0) != 0) {
	210	qdev_unplug(&dev->qdev);
	211	dev = NULL;
	212	}
5b684b5a	213	}
6f338c34 AL	214	break;
6f338c34 AL	215	case IF_VIRTIO:
7432ff5d BS	216	if (!dinfo) {
	217	monitor_printf(mon, "virtio requires a backing file/device.\n");
	218	return NULL;
	219	}
499cf102	220	dev = pci_create(bus, devfn, "virtio-blk-pci");
d176c495	221	qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
5b684b5a GH	222	if (qdev_init(&dev->qdev) < 0)
5b684b5a GH	223	dev = NULL;
6f338c34	224	break;
1f5f6638 MA	225	default:
1f5f6638 MA	226	dev = NULL;
6f338c34	227	}
1f5f6638	228	return dev;
6f338c34 AL	229	}
6f338c34 AL	230
1d4daa91	231	void pci_device_hot_add(Monitor mon, const QDict qdict)
6f338c34 AL	232	{
6f338c34 AL	233	PCIDevice *dev = NULL;
1d4daa91 LC	234	const char *pci_addr = qdict_get_str(qdict, "pci_addr");
	235	const char *type = qdict_get_str(qdict, "type");
	236	const char *opts = qdict_get_try_str(qdict, "opts");
6f338c34	237
e9283f8b JK	238	/* strip legacy tag */
	239	if (!strncmp(pci_addr, "pci_addr=", 9)) {
	240	pci_addr += 9;
6f338c34 AL	241	}
6f338c34 AL	242
a62acdc0 JK	243	if (!opts) {
	244	opts = "";
	245	}
	246
e9283f8b JK	247	if (!strcmp(pci_addr, "auto"))
e9283f8b JK	248	pci_addr = NULL;
6f338c34 AL	249
6f338c34 AL	250	if (strcmp(type, "nic") == 0)
e9283f8b	251	dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
6f338c34	252	else if (strcmp(type, "storage") == 0)
e9283f8b	253	dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
6f338c34	254	else
376253ec	255	monitor_printf(mon, "invalid type: %s\n", type);
6f338c34 AL	256
6f338c34 AL	257	if (dev) {
376253ec AL	258	monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
	259	0, pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
	260	PCI_FUNC(dev->devfn));
6f338c34	261	} else
376253ec	262	monitor_printf(mon, "failed to add %s\n", opts);
6f338c34 AL	263	}
	264	#endif
	265
376253ec	266	void pci_device_hot_remove(Monitor mon, const char pci_addr)
6f338c34 AL	267	{
	268	PCIDevice *d;
	269	int dom, bus;
	270	unsigned slot;
	271
e9283f8b	272	if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
6f338c34 AL	273	return;
	274	}
	275
c469e1dd	276	d = pci_find_device(pci_find_root_bus(0), bus, slot, 0);
6f338c34	277	if (!d) {
376253ec	278	monitor_printf(mon, "slot %d empty\n", slot);
6f338c34 AL	279	return;
6f338c34 AL	280	}
3f84865a	281	qdev_unplug(&d->qdev);
6f338c34 AL	282	}
6f338c34 AL	283
6848d827 LC	284	void do_pci_device_hot_remove(Monitor mon, const QDict qdict,
6848d827 LC	285	QObject **ret_data)
38183186	286	{
d54908a5	287	pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
38183186	288	}