[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 "pc.h"
#include "monitor.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(dom), 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",
                       pci_find_domain(dev->bus),
                       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(dom), bus, slot, 0);
    if (!d) {
        monitor_printf(mon, "slot %d empty\n", slot);
        return -1;
    }
    return qdev_unplug(&d->qdev);
}

void do_pci_device_hot_remove(Monitor *mon, const QDict *qdict)
{
    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"
6f338c34	29	#include "pc.h"
376253ec	30	#include "monitor.h"
43b443b6	31	#include "scsi.h"
6f338c34	32	#include "virtio-blk.h"
c59c7ea9	33	#include "qemu-config.h"
6f338c34	34
ce88f890	35	#if defined(TARGET_I386)
1f5f6638	36	static PCIDevice qemu_pci_hot_add_nic(Monitor mon,
c59c7ea9 MM	37	const char *devaddr,
c59c7ea9 MM	38	const char *opts_str)
6f338c34	39	{
c59c7ea9	40	QemuOpts *opts;
53e0d8af GH	41	PCIBus *bus;
	42	int ret, devfn;
	43
	44	bus = pci_get_bus_devfn(&devfn, devaddr);
	45	if (!bus) {
	46	monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
	47	return NULL;
	48	}
	49	if (!((BusState*)bus)->allow_hotplug) {
	50	monitor_printf(mon, "PCI bus doesn't support hotplug\n");
	51	return NULL;
	52	}
6f338c34	53
8212c64f	54	opts = qemu_opts_parse(&qemu_net_opts, opts_str ? opts_str : "", 0);
c59c7ea9	55	if (!opts) {
c59c7ea9 MM	56	return NULL;
	57	}
	58
	59	qemu_opt_set(opts, "type", "nic");
	60
f6b134ac	61	ret = net_client_init(mon, opts, 0);
eefb4091	62	if (ret < 0)
6f338c34	63	return NULL;
5607c388 MA	64	if (nd_table[ret].devaddr) {
	65	monitor_printf(mon, "Parameter addr not supported\n");
	66	return NULL;
	67	}
1f5f6638	68	return pci_nic_init(&nd_table[ret], "rtl8139", devaddr);
6f338c34 AL	69	}
6f338c34 AL	70
6fdb03d5 MA	71	static int scsi_hot_add(Monitor mon, DeviceState adapter,
6fdb03d5 MA	72	DriveInfo *dinfo, int printinfo)
30d335d6 GH	73	{
	74	SCSIBus *scsibus;
	75	SCSIDevice *scsidev;
	76
	77	scsibus = DO_UPCAST(SCSIBus, qbus, QLIST_FIRST(&adapter->child_bus));
	78	if (!scsibus \|\| strcmp(scsibus->qbus.info->name, "SCSI") != 0) {
1ecda02b	79	error_report("Device is not a SCSI adapter");
30d335d6 GH	80	return -1;
	81	}
	82
	83	/*
	84	* drive_init() tries to find a default for dinfo->unit. Doesn't
	85	* work at all for hotplug though as we assign the device to a
	86	* specific bus instead of the first bus with spare scsi ids.
	87	*
	88	* Ditch the calculated value and reload from option string (if
	89	* specified).
	90	*/
	91	dinfo->unit = qemu_opt_get_number(dinfo->opts, "unit", -1);
	92	scsidev = scsi_bus_legacy_add_drive(scsibus, dinfo, dinfo->unit);
11f4d7f4	93	dinfo->unit = scsidev->id;
30d335d6 GH	94
30d335d6 GH	95	if (printinfo)
6fdb03d5 MA	96	monitor_printf(mon, "OK bus %d, unit %d\n",
6fdb03d5 MA	97	scsibus->busnr, scsidev->id);
30d335d6 GH	98	return 0;
	99	}
	100
f18c16de	101	void drive_hot_add(Monitor mon, const QDict qdict)
6f338c34 AL	102	{
	103	int dom, pci_bus;
	104	unsigned slot;
7f5b7d3e	105	int type;
6f338c34	106	PCIDevice *dev;
4db49dc0	107	DriveInfo *dinfo = NULL;
f18c16de LC	108	const char *pci_addr = qdict_get_str(qdict, "pci_addr");
f18c16de LC	109	const char *opts = qdict_get_str(qdict, "opts");
6f338c34	110
751c6a17 GH	111	dinfo = add_init_drive(opts);
751c6a17 GH	112	if (!dinfo)
4db49dc0	113	goto err;
751c6a17	114	if (dinfo->devaddr) {
c2cc47a4	115	monitor_printf(mon, "Parameter addr not supported\n");
4db49dc0	116	goto err;
c2cc47a4	117	}
751c6a17	118	type = dinfo->type;
6f338c34 AL	119
	120	switch (type) {
	121	case IF_SCSI:
4db49dc0 GH	122	if (pci_read_devaddr(mon, pci_addr, &dom, &pci_bus, &slot)) {
	123	goto err;
	124	}
e075e788	125	dev = pci_find_device(pci_find_root_bus(dom), pci_bus, slot, 0);
4db49dc0 GH	126	if (!dev) {
	127	monitor_printf(mon, "no pci device with address %s\n", pci_addr);
	128	goto err;
	129	}
6fdb03d5	130	if (scsi_hot_add(mon, &dev->qdev, dinfo, 1) != 0) {
30d335d6 GH	131	goto err;
30d335d6 GH	132	}
6f338c34	133	break;
7101174e GH	134	case IF_NONE:
	135	monitor_printf(mon, "OK\n");
	136	break;
6f338c34	137	default:
376253ec	138	monitor_printf(mon, "Can't hot-add drive to type %d\n", type);
4db49dc0	139	goto err;
6f338c34	140	}
4db49dc0	141	return;
6f338c34	142
4db49dc0 GH	143	err:
	144	if (dinfo)
	145	drive_uninit(dinfo);
6f338c34 AL	146	return;
	147	}
	148
1f5f6638 MA	149	static PCIDevice qemu_pci_hot_add_storage(Monitor mon,
1f5f6638 MA	150	const char *devaddr,
376253ec	151	const char *opts)
6f338c34	152	{
1f5f6638	153	PCIDevice *dev;
06c79f4e	154	DriveInfo *dinfo = NULL;
751c6a17	155	int type = -1;
6f338c34	156	char buf[128];
49bd1458 MA	157	PCIBus *bus;
49bd1458 MA	158	int devfn;
6f338c34 AL	159
	160	if (get_param_value(buf, sizeof(buf), "if", opts)) {
	161	if (!strcmp(buf, "scsi"))
	162	type = IF_SCSI;
	163	else if (!strcmp(buf, "virtio")) {
	164	type = IF_VIRTIO;
8707ecca AL	165	} else {
8707ecca AL	166	monitor_printf(mon, "type %s not a hotpluggable PCI device.\n", buf);
1f5f6638	167	return NULL;
6f338c34 AL	168	}
6f338c34 AL	169	} else {
376253ec	170	monitor_printf(mon, "no if= specified\n");
1f5f6638	171	return NULL;
6f338c34 AL	172	}
	173
	174	if (get_param_value(buf, sizeof(buf), "file", opts)) {
751c6a17 GH	175	dinfo = add_init_drive(opts);
751c6a17 GH	176	if (!dinfo)
1f5f6638	177	return NULL;
751c6a17	178	if (dinfo->devaddr) {
c2cc47a4 MA	179	monitor_printf(mon, "Parameter addr not supported\n");
	180	return NULL;
	181	}
7432ff5d BS	182	} else {
7432ff5d BS	183	dinfo = NULL;
6f338c34 AL	184	}
6f338c34 AL	185
49bd1458 MA	186	bus = pci_get_bus_devfn(&devfn, devaddr);
	187	if (!bus) {
	188	monitor_printf(mon, "Invalid PCI device address %s\n", devaddr);
	189	return NULL;
	190	}
53e0d8af GH	191	if (!((BusState*)bus)->allow_hotplug) {
	192	monitor_printf(mon, "PCI bus doesn't support hotplug\n");
	193	return NULL;
	194	}
49bd1458	195
6f338c34 AL	196	switch (type) {
6f338c34 AL	197	case IF_SCSI:
499cf102	198	dev = pci_create(bus, devfn, "lsi53c895a");
5b684b5a GH	199	if (qdev_init(&dev->qdev) < 0)
5b684b5a GH	200	dev = NULL;
ec7efac4	201	if (dev && dinfo) {
6fdb03d5	202	if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
30d335d6 GH	203	qdev_unplug(&dev->qdev);
	204	dev = NULL;
	205	}
5b684b5a	206	}
6f338c34 AL	207	break;
6f338c34 AL	208	case IF_VIRTIO:
7432ff5d BS	209	if (!dinfo) {
	210	monitor_printf(mon, "virtio requires a backing file/device.\n");
	211	return NULL;
	212	}
499cf102	213	dev = pci_create(bus, devfn, "virtio-blk-pci");
d176c495	214	qdev_prop_set_drive(&dev->qdev, "drive", dinfo);
5b684b5a GH	215	if (qdev_init(&dev->qdev) < 0)
5b684b5a GH	216	dev = NULL;
6f338c34	217	break;
1f5f6638 MA	218	default:
1f5f6638 MA	219	dev = NULL;
6f338c34	220	}
1f5f6638	221	return dev;
6f338c34 AL	222	}
6f338c34 AL	223
6c6a58ae	224	void pci_device_hot_add(Monitor mon, const QDict qdict)
6f338c34 AL	225	{
6f338c34 AL	226	PCIDevice *dev = NULL;
1d4daa91 LC	227	const char *pci_addr = qdict_get_str(qdict, "pci_addr");
	228	const char *type = qdict_get_str(qdict, "type");
	229	const char *opts = qdict_get_try_str(qdict, "opts");
6f338c34	230
e9283f8b JK	231	/* strip legacy tag */
	232	if (!strncmp(pci_addr, "pci_addr=", 9)) {
	233	pci_addr += 9;
6f338c34 AL	234	}
6f338c34 AL	235
a62acdc0 JK	236	if (!opts) {
	237	opts = "";
	238	}
	239
e9283f8b JK	240	if (!strcmp(pci_addr, "auto"))
e9283f8b JK	241	pci_addr = NULL;
6f338c34	242
395560c8	243	if (strcmp(type, "nic") == 0) {
e9283f8b	244	dev = qemu_pci_hot_add_nic(mon, pci_addr, opts);
395560c8	245	} else if (strcmp(type, "storage") == 0) {
e9283f8b	246	dev = qemu_pci_hot_add_storage(mon, pci_addr, opts);
395560c8	247	} else {
376253ec	248	monitor_printf(mon, "invalid type: %s\n", type);
395560c8	249	}
6f338c34 AL	250
6f338c34 AL	251	if (dev) {
6c6a58ae	252	monitor_printf(mon, "OK domain %d, bus %d, slot %d, function %d\n",
e075e788 IY	253	pci_find_domain(dev->bus),
e075e788 IY	254	pci_bus_num(dev->bus), PCI_SLOT(dev->devfn),
6c6a58ae MA	255	PCI_FUNC(dev->devfn));
6c6a58ae MA	256	} else
376253ec	257	monitor_printf(mon, "failed to add %s\n", opts);
6f338c34 AL	258	}
	259	#endif
	260
053801bc	261	int pci_device_hot_remove(Monitor mon, const char pci_addr)
6f338c34 AL	262	{
	263	PCIDevice *d;
	264	int dom, bus;
	265	unsigned slot;
	266
e9283f8b	267	if (pci_read_devaddr(mon, pci_addr, &dom, &bus, &slot)) {
053801bc	268	return -1;
6f338c34 AL	269	}
6f338c34 AL	270
e075e788	271	d = pci_find_device(pci_find_root_bus(dom), bus, slot, 0);
6f338c34	272	if (!d) {
376253ec	273	monitor_printf(mon, "slot %d empty\n", slot);
053801bc	274	return -1;
6f338c34	275	}
053801bc	276	return qdev_unplug(&d->qdev);
6f338c34 AL	277	}
6f338c34 AL	278
b752daf0	279	void do_pci_device_hot_remove(Monitor mon, const QDict qdict)
38183186	280	{
b752daf0	281	pci_device_hot_remove(mon, qdict_get_str(qdict, "pci_addr"));
38183186	282	}