blob: 2f348edf863a2787183a211d43a8e5f6c74693b6 [file] [log] [blame]
Anthony PERARD3285cf42010-08-19 12:27:56 +01001/*
2 * Copyright (C) 2010 Citrix Ltd.
3 *
4 * This work is licensed under the terms of the GNU GPL, version 2. See
5 * the COPYING file in the top-level directory.
6 *
Paolo Bonzini6b620ca2012-01-13 17:44:23 +01007 * Contributions after 2012-01-13 are licensed under the terms of the
8 * GNU GPL, version 2 or (at your option) any later version.
Anthony PERARD3285cf42010-08-19 12:27:56 +01009 */
10
Peter Maydell21cbfe52016-01-26 18:17:06 +000011#include "qemu/osdep.h"
Arun Sharma9ce94e72010-09-06 20:07:14 +010012
Paolo Bonzini33c11872016-03-15 16:58:45 +010013#include "cpu.h"
Michael S. Tsirkina2cb15b2012-12-12 14:24:50 +020014#include "hw/pci/pci.h"
Paolo Bonzini0d09e412013-02-05 17:06:20 +010015#include "hw/i386/pc.h"
Stefano Stabellini428c3ec2016-01-13 14:59:09 +000016#include "hw/i386/apic-msidef.h"
Paolo Bonzini0d09e412013-02-05 17:06:20 +010017#include "hw/xen/xen_common.h"
18#include "hw/xen/xen_backend.h"
Anthony PERARD39f42432012-10-03 13:48:19 +000019#include "qmp-commands.h"
Anthony PERARD3285cf42010-08-19 12:27:56 +010020
Paolo Bonzinidccfcd02013-04-08 16:55:25 +020021#include "sysemu/char.h"
Markus Armbrusterdced4d22016-01-14 16:09:38 +010022#include "qemu/error-report.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010023#include "qemu/range.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010024#include "sysemu/xen-mapcache.h"
Jun Nakajima432d2682010-08-31 16:41:25 +010025#include "trace.h"
Paolo Bonzini022c62c2012-12-17 18:19:49 +010026#include "exec/address-spaces.h"
Jun Nakajima432d2682010-08-31 16:41:25 +010027
Arun Sharma9ce94e72010-09-06 20:07:14 +010028#include <xen/hvm/ioreq.h>
29#include <xen/hvm/params.h>
Anthony PERARD8a369e22011-07-20 08:17:43 +000030#include <xen/hvm/e820.h>
Arun Sharma9ce94e72010-09-06 20:07:14 +010031
Wei Liu04b0de02014-05-07 16:16:43 +000032//#define DEBUG_XEN_HVM
Arun Sharma9ce94e72010-09-06 20:07:14 +010033
Wei Liu04b0de02014-05-07 16:16:43 +000034#ifdef DEBUG_XEN_HVM
Arun Sharma9ce94e72010-09-06 20:07:14 +010035#define DPRINTF(fmt, ...) \
36 do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
37#else
38#define DPRINTF(fmt, ...) \
39 do { } while (0)
40#endif
41
Avi Kivityce76b8a2011-12-18 16:27:48 +020042static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi;
Avi Kivityc65adf92011-12-18 16:40:50 +020043static MemoryRegion *framebuffer;
Anthony PERARD39f42432012-10-03 13:48:19 +000044static bool xen_in_migration;
Avi Kivityce76b8a2011-12-18 16:27:48 +020045
Arun Sharma9ce94e72010-09-06 20:07:14 +010046/* Compatibility with older version */
Don Slutz37f9e252014-10-20 15:49:12 -040047
48/* This allows QEMU to build on a system that has Xen 4.5 or earlier
49 * installed. This here (not in hw/xen/xen_common.h) because xen/hvm/ioreq.h
50 * needs to be included before this block and hw/xen/xen_common.h needs to
51 * be included before xen/hvm/ioreq.h
52 */
53#ifndef IOREQ_TYPE_VMWARE_PORT
54#define IOREQ_TYPE_VMWARE_PORT 3
55struct vmware_regs {
56 uint32_t esi;
57 uint32_t edi;
58 uint32_t ebx;
59 uint32_t ecx;
60 uint32_t edx;
61};
62typedef struct vmware_regs vmware_regs_t;
63
64struct shared_vmport_iopage {
65 struct vmware_regs vcpu_vmport_regs[1];
66};
67typedef struct shared_vmport_iopage shared_vmport_iopage_t;
68#endif
69
Arun Sharma9ce94e72010-09-06 20:07:14 +010070static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
71{
72 return shared_page->vcpu_ioreq[i].vp_eport;
73}
74static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
75{
76 return &shared_page->vcpu_ioreq[vcpu];
77}
Arun Sharma9ce94e72010-09-06 20:07:14 +010078
79#define BUFFER_IO_MAX_DELAY 100
80
Anthony PERARDb4dd7802011-05-24 14:34:21 +010081typedef struct XenPhysmap {
Avi Kivitya8170e52012-10-23 12:30:10 +020082 hwaddr start_addr;
Anthony PERARDb4dd7802011-05-24 14:34:21 +010083 ram_addr_t size;
Peter Crosthwaitedc6c4fe2014-08-25 20:09:13 -070084 const char *name;
Avi Kivitya8170e52012-10-23 12:30:10 +020085 hwaddr phys_offset;
Anthony PERARDb4dd7802011-05-24 14:34:21 +010086
87 QLIST_ENTRY(XenPhysmap) list;
88} XenPhysmap;
89
Arun Sharma9ce94e72010-09-06 20:07:14 +010090typedef struct XenIOState {
Paul Durrant3996e852015-01-20 11:06:19 +000091 ioservid_t ioservid;
Arun Sharma9ce94e72010-09-06 20:07:14 +010092 shared_iopage_t *shared_page;
Don Slutz37f9e252014-10-20 15:49:12 -040093 shared_vmport_iopage_t *shared_vmport_page;
Arun Sharma9ce94e72010-09-06 20:07:14 +010094 buffered_iopage_t *buffered_io_page;
95 QEMUTimer *buffered_io_timer;
Don Slutz37f9e252014-10-20 15:49:12 -040096 CPUState **cpu_by_vcpu_id;
Arun Sharma9ce94e72010-09-06 20:07:14 +010097 /* the evtchn port for polling the notification, */
98 evtchn_port_t *ioreq_local_port;
Stefano Stabellinifda1f762012-04-13 17:46:01 +000099 /* evtchn local port for buffered io */
100 evtchn_port_t bufioreq_local_port;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100101 /* the evtchn fd for polling */
Ian Campbella2db2a12016-01-15 13:23:38 +0000102 xenevtchn_handle *xce_handle;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100103 /* which vcpu we are serving */
104 int send_vcpu;
105
Anthony PERARD29321332010-09-06 20:07:33 +0100106 struct xs_handle *xenstore;
Avi Kivity20581d22011-12-19 12:07:50 +0200107 MemoryListener memory_listener;
Paul Durrant3996e852015-01-20 11:06:19 +0000108 MemoryListener io_listener;
109 DeviceListener device_listener;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100110 QLIST_HEAD(, XenPhysmap) physmap;
Avi Kivitya8170e52012-10-23 12:30:10 +0200111 hwaddr free_phys_offset;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100112 const XenPhysmap *log_for_dirtybit;
Anthony PERARD29321332010-09-06 20:07:33 +0100113
Arun Sharma9ce94e72010-09-06 20:07:14 +0100114 Notifier exit;
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100115 Notifier suspend;
Liu, Jinsong11addd02013-09-25 16:40:23 +0000116 Notifier wakeup;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100117} XenIOState;
118
Anthony PERARD41445302010-07-16 14:55:39 +0100119/* Xen specific function for piix pci */
120
121int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
122{
123 return irq_num + ((pci_dev->devfn >> 3) << 2);
124}
125
126void xen_piix3_set_irq(void *opaque, int irq_num, int level)
127{
128 xc_hvm_set_pci_intx_level(xen_xc, xen_domid, 0, 0, irq_num >> 2,
129 irq_num & 3, level);
130}
131
132void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
133{
134 int i;
135
136 /* Scan for updates to PCI link routes (0x60-0x63). */
137 for (i = 0; i < len; i++) {
138 uint8_t v = (val >> (8 * i)) & 0xff;
139 if (v & 0x80) {
140 v = 0;
141 }
142 v &= 0xf;
143 if (((address + i) >= 0x60) && ((address + i) <= 0x63)) {
144 xc_hvm_set_pci_link_route(xen_xc, xen_domid, address + i - 0x60, v);
145 }
146 }
147}
148
Stefano Stabellini428c3ec2016-01-13 14:59:09 +0000149int xen_is_pirq_msi(uint32_t msi_data)
150{
151 /* If vector is 0, the msi is remapped into a pirq, passed as
152 * dest_id.
153 */
154 return ((msi_data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT) == 0;
155}
156
Wei Liuf1dbf012012-04-12 10:01:43 +0000157void xen_hvm_inject_msi(uint64_t addr, uint32_t data)
158{
Ian Campbell2ac9f6d2016-02-10 11:07:02 +0000159 xc_hvm_inject_msi(xen_xc, xen_domid, addr, data);
Wei Liuf1dbf012012-04-12 10:01:43 +0000160}
161
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100162static void xen_suspend_notifier(Notifier *notifier, void *data)
Anthony PERARDc9622472010-10-05 16:40:22 +0100163{
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100164 xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
Anthony PERARDc9622472010-10-05 16:40:22 +0100165}
166
Anthony PERARD9c11a8a2010-06-30 17:50:10 +0100167/* Xen Interrupt Controller */
168
169static void xen_set_irq(void *opaque, int irq, int level)
170{
171 xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level);
172}
173
174qemu_irq *xen_interrupt_controller_init(void)
175{
176 return qemu_allocate_irqs(xen_set_irq, NULL, 16);
177}
178
Jun Nakajima432d2682010-08-31 16:41:25 +0100179/* Memory Ops */
180
Eduardo Habkost91176e32015-08-17 11:42:29 -0700181static void xen_ram_init(PCMachineState *pcms,
Don Slutz3c2a9662014-06-19 21:40:24 -0400182 ram_addr_t ram_size, MemoryRegion **ram_memory_p)
Jun Nakajima432d2682010-08-31 16:41:25 +0100183{
Avi Kivityce76b8a2011-12-18 16:27:48 +0200184 MemoryRegion *sysmem = get_system_memory();
Avi Kivityce76b8a2011-12-18 16:27:48 +0200185 ram_addr_t block_len;
Don Slutzc4f5cdc2014-06-19 21:40:26 -0400186 uint64_t user_lowmem = object_property_get_int(qdev_get_machine(),
187 PC_MACHINE_MAX_RAM_BELOW_4G,
188 &error_abort);
Jun Nakajima432d2682010-08-31 16:41:25 +0100189
Stefan Weila9dd38d2014-07-07 21:00:41 +0200190 /* Handle the machine opt max-ram-below-4g. It is basically doing
Don Slutzc4f5cdc2014-06-19 21:40:26 -0400191 * min(xen limit, user limit).
192 */
Gerd Hoffmann5ec7d092016-06-24 13:35:17 +0200193 if (!user_lowmem) {
194 user_lowmem = HVM_BELOW_4G_RAM_END; /* default */
195 }
Don Slutzc4f5cdc2014-06-19 21:40:26 -0400196 if (HVM_BELOW_4G_RAM_END <= user_lowmem) {
197 user_lowmem = HVM_BELOW_4G_RAM_END;
Anthony PERARD8a369e22011-07-20 08:17:43 +0000198 }
Jun Nakajima432d2682010-08-31 16:41:25 +0100199
Don Slutzc4f5cdc2014-06-19 21:40:26 -0400200 if (ram_size >= user_lowmem) {
Eduardo Habkost91176e32015-08-17 11:42:29 -0700201 pcms->above_4g_mem_size = ram_size - user_lowmem;
202 pcms->below_4g_mem_size = user_lowmem;
Jun Nakajima432d2682010-08-31 16:41:25 +0100203 } else {
Eduardo Habkost91176e32015-08-17 11:42:29 -0700204 pcms->above_4g_mem_size = 0;
205 pcms->below_4g_mem_size = ram_size;
Jun Nakajima432d2682010-08-31 16:41:25 +0100206 }
Eduardo Habkost91176e32015-08-17 11:42:29 -0700207 if (!pcms->above_4g_mem_size) {
Don Slutzc4f5cdc2014-06-19 21:40:26 -0400208 block_len = ram_size;
209 } else {
210 /*
211 * Xen does not allocate the memory continuously, it keeps a
212 * hole of the size computed above or passed in.
213 */
Eduardo Habkost91176e32015-08-17 11:42:29 -0700214 block_len = (1ULL << 32) + pcms->above_4g_mem_size;
Don Slutzc4f5cdc2014-06-19 21:40:26 -0400215 }
Hu Tao49946532014-09-09 13:27:55 +0800216 memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len,
Markus Armbrusterf8ed85a2015-09-11 16:51:43 +0200217 &error_fatal);
Don Slutzc4f5cdc2014-06-19 21:40:26 -0400218 *ram_memory_p = &ram_memory;
219 vmstate_register_ram_global(&ram_memory);
Jun Nakajima432d2682010-08-31 16:41:25 +0100220
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -0400221 memory_region_init_alias(&ram_640k, NULL, "xen.ram.640k",
Avi Kivityce76b8a2011-12-18 16:27:48 +0200222 &ram_memory, 0, 0xa0000);
223 memory_region_add_subregion(sysmem, 0, &ram_640k);
Anthony PERARD8a369e22011-07-20 08:17:43 +0000224 /* Skip of the VGA IO memory space, it will be registered later by the VGA
225 * emulated device.
226 *
227 * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load
228 * the Options ROM, so it is registered here as RAM.
229 */
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -0400230 memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo",
Don Slutz3c2a9662014-06-19 21:40:24 -0400231 &ram_memory, 0xc0000,
Eduardo Habkost91176e32015-08-17 11:42:29 -0700232 pcms->below_4g_mem_size - 0xc0000);
Avi Kivityce76b8a2011-12-18 16:27:48 +0200233 memory_region_add_subregion(sysmem, 0xc0000, &ram_lo);
Eduardo Habkost91176e32015-08-17 11:42:29 -0700234 if (pcms->above_4g_mem_size > 0) {
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -0400235 memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi",
Avi Kivityce76b8a2011-12-18 16:27:48 +0200236 &ram_memory, 0x100000000ULL,
Eduardo Habkost91176e32015-08-17 11:42:29 -0700237 pcms->above_4g_mem_size);
Avi Kivityce76b8a2011-12-18 16:27:48 +0200238 memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi);
Jun Nakajima432d2682010-08-31 16:41:25 +0100239 }
Jun Nakajima432d2682010-08-31 16:41:25 +0100240}
241
Markus Armbruster37aa7a02016-01-14 16:09:39 +0100242void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
243 Error **errp)
Jun Nakajima432d2682010-08-31 16:41:25 +0100244{
245 unsigned long nr_pfn;
246 xen_pfn_t *pfn_list;
247 int i;
248
Anthony PERARDc2345722012-01-25 12:36:06 +0000249 if (runstate_check(RUN_STATE_INMIGRATE)) {
250 /* RAM already populated in Xen */
251 fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT
252 " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n",
253 __func__, size, ram_addr);
254 return;
255 }
256
Avi Kivityce76b8a2011-12-18 16:27:48 +0200257 if (mr == &ram_memory) {
258 return;
259 }
260
Jun Nakajima432d2682010-08-31 16:41:25 +0100261 trace_xen_ram_alloc(ram_addr, size);
262
263 nr_pfn = size >> TARGET_PAGE_BITS;
Anthony Liguori7267c092011-08-20 22:09:37 -0500264 pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
Jun Nakajima432d2682010-08-31 16:41:25 +0100265
266 for (i = 0; i < nr_pfn; i++) {
267 pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
268 }
269
270 if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0, pfn_list)) {
Markus Armbruster37aa7a02016-01-14 16:09:39 +0100271 error_setg(errp, "xen: failed to populate ram at " RAM_ADDR_FMT,
272 ram_addr);
Jun Nakajima432d2682010-08-31 16:41:25 +0100273 }
274
Anthony Liguori7267c092011-08-20 22:09:37 -0500275 g_free(pfn_list);
Jun Nakajima432d2682010-08-31 16:41:25 +0100276}
277
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100278static XenPhysmap *get_physmapping(XenIOState *state,
Avi Kivitya8170e52012-10-23 12:30:10 +0200279 hwaddr start_addr, ram_addr_t size)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100280{
281 XenPhysmap *physmap = NULL;
282
283 start_addr &= TARGET_PAGE_MASK;
284
285 QLIST_FOREACH(physmap, &state->physmap, list) {
286 if (range_covers_byte(physmap->start_addr, physmap->size, start_addr)) {
287 return physmap;
288 }
289 }
290 return NULL;
291}
292
Avi Kivitya8170e52012-10-23 12:30:10 +0200293static hwaddr xen_phys_offset_to_gaddr(hwaddr start_addr,
Anthony PERARDcd1ba7d2012-01-18 12:21:38 +0000294 ram_addr_t size, void *opaque)
295{
Avi Kivitya8170e52012-10-23 12:30:10 +0200296 hwaddr addr = start_addr & TARGET_PAGE_MASK;
Anthony PERARDcd1ba7d2012-01-18 12:21:38 +0000297 XenIOState *xen_io_state = opaque;
298 XenPhysmap *physmap = NULL;
299
300 QLIST_FOREACH(physmap, &xen_io_state->physmap, list) {
301 if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) {
302 return physmap->start_addr;
303 }
304 }
305
306 return start_addr;
307}
308
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100309static int xen_add_to_physmap(XenIOState *state,
Avi Kivitya8170e52012-10-23 12:30:10 +0200310 hwaddr start_addr,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100311 ram_addr_t size,
Avi Kivity20581d22011-12-19 12:07:50 +0200312 MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +0200313 hwaddr offset_within_region)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100314{
315 unsigned long i = 0;
316 int rc = 0;
317 XenPhysmap *physmap = NULL;
Avi Kivitya8170e52012-10-23 12:30:10 +0200318 hwaddr pfn, start_gpfn;
319 hwaddr phys_offset = memory_region_get_ram_addr(mr);
Stefano Stabellinid1814e02012-01-19 15:56:11 +0000320 char path[80], value[17];
Peter Crosthwaite3e1f5082014-08-25 20:09:48 -0700321 const char *mr_name;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100322
323 if (get_physmapping(state, start_addr, size)) {
324 return 0;
325 }
326 if (size <= 0) {
327 return -1;
328 }
329
Stefano Stabelliniebed8502011-06-15 17:29:27 +0100330 /* Xen can only handle a single dirty log region for now and we want
331 * the linear framebuffer to be that region.
332 * Avoid tracking any regions that is not videoram and avoid tracking
333 * the legacy vga region. */
Avi Kivity20581d22011-12-19 12:07:50 +0200334 if (mr == framebuffer && start_addr > 0xbffff) {
335 goto go_physmap;
Stefano Stabelliniebed8502011-06-15 17:29:27 +0100336 }
337 return -1;
338
339go_physmap:
Sander Eikelenboomf1b8caf2012-12-17 11:37:43 +0000340 DPRINTF("mapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx"\n",
341 start_addr, start_addr + size);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100342
343 pfn = phys_offset >> TARGET_PAGE_BITS;
344 start_gpfn = start_addr >> TARGET_PAGE_BITS;
345 for (i = 0; i < size >> TARGET_PAGE_BITS; i++) {
346 unsigned long idx = pfn + i;
347 xen_pfn_t gpfn = start_gpfn + i;
348
Konrad Rzeszutek Wilk20a544c2015-06-29 12:51:05 -0400349 rc = xen_xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100350 if (rc) {
351 DPRINTF("add_to_physmap MFN %"PRI_xen_pfn" to PFN %"
Konrad Rzeszutek Wilke763add2015-03-13 15:36:58 -0400352 PRI_xen_pfn" failed: %d (errno: %d)\n", idx, gpfn, rc, errno);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100353 return -rc;
354 }
355 }
356
Peter Crosthwaite3e1f5082014-08-25 20:09:48 -0700357 mr_name = memory_region_name(mr);
358
Anthony Liguori7267c092011-08-20 22:09:37 -0500359 physmap = g_malloc(sizeof (XenPhysmap));
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100360
361 physmap->start_addr = start_addr;
362 physmap->size = size;
Peter Crosthwaite3e1f5082014-08-25 20:09:48 -0700363 physmap->name = mr_name;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100364 physmap->phys_offset = phys_offset;
365
366 QLIST_INSERT_HEAD(&state->physmap, physmap, list);
367
368 xc_domain_pin_memory_cacheattr(xen_xc, xen_domid,
369 start_addr >> TARGET_PAGE_BITS,
Stefano Stabellini8b6bb0a2014-05-07 13:48:37 +0000370 (start_addr + size - 1) >> TARGET_PAGE_BITS,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100371 XEN_DOMCTL_MEM_CACHEATTR_WB);
Stefano Stabellinid1814e02012-01-19 15:56:11 +0000372
373 snprintf(path, sizeof(path),
374 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr",
375 xen_domid, (uint64_t)phys_offset);
376 snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)start_addr);
377 if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
378 return -1;
379 }
380 snprintf(path, sizeof(path),
381 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/size",
382 xen_domid, (uint64_t)phys_offset);
383 snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)size);
384 if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
385 return -1;
386 }
Peter Crosthwaite3e1f5082014-08-25 20:09:48 -0700387 if (mr_name) {
Stefano Stabellinid1814e02012-01-19 15:56:11 +0000388 snprintf(path, sizeof(path),
389 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name",
390 xen_domid, (uint64_t)phys_offset);
Peter Crosthwaite3e1f5082014-08-25 20:09:48 -0700391 if (!xs_write(state->xenstore, 0, path, mr_name, strlen(mr_name))) {
Stefano Stabellinid1814e02012-01-19 15:56:11 +0000392 return -1;
393 }
394 }
395
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100396 return 0;
397}
398
399static int xen_remove_from_physmap(XenIOState *state,
Avi Kivitya8170e52012-10-23 12:30:10 +0200400 hwaddr start_addr,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100401 ram_addr_t size)
402{
403 unsigned long i = 0;
404 int rc = 0;
405 XenPhysmap *physmap = NULL;
Avi Kivitya8170e52012-10-23 12:30:10 +0200406 hwaddr phys_offset = 0;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100407
408 physmap = get_physmapping(state, start_addr, size);
409 if (physmap == NULL) {
410 return -1;
411 }
412
413 phys_offset = physmap->phys_offset;
414 size = physmap->size;
415
Wei Liud18e1732013-10-14 13:53:53 +0100416 DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", at "
417 "%"HWADDR_PRIx"\n", start_addr, start_addr + size, phys_offset);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100418
419 size >>= TARGET_PAGE_BITS;
420 start_addr >>= TARGET_PAGE_BITS;
421 phys_offset >>= TARGET_PAGE_BITS;
422 for (i = 0; i < size; i++) {
Stefano Stabellini643f5932013-12-18 19:17:32 +0000423 xen_pfn_t idx = start_addr + i;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100424 xen_pfn_t gpfn = phys_offset + i;
425
Konrad Rzeszutek Wilk20a544c2015-06-29 12:51:05 -0400426 rc = xen_xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100427 if (rc) {
428 fprintf(stderr, "add_to_physmap MFN %"PRI_xen_pfn" to PFN %"
Konrad Rzeszutek Wilke763add2015-03-13 15:36:58 -0400429 PRI_xen_pfn" failed: %d (errno: %d)\n", idx, gpfn, rc, errno);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100430 return -rc;
431 }
432 }
433
434 QLIST_REMOVE(physmap, list);
435 if (state->log_for_dirtybit == physmap) {
436 state->log_for_dirtybit = NULL;
437 }
Stefan Weilc5633d92013-06-10 22:36:22 +0200438 g_free(physmap);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100439
440 return 0;
441}
442
Avi Kivity20581d22011-12-19 12:07:50 +0200443static void xen_set_memory(struct MemoryListener *listener,
444 MemoryRegionSection *section,
445 bool add)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100446{
Avi Kivity20581d22011-12-19 12:07:50 +0200447 XenIOState *state = container_of(listener, XenIOState, memory_listener);
Avi Kivitya8170e52012-10-23 12:30:10 +0200448 hwaddr start_addr = section->offset_within_address_space;
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200449 ram_addr_t size = int128_get64(section->size);
Paolo Bonzini2d1a35b2015-03-23 10:50:57 +0100450 bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100451 hvmmem_type_t mem_type;
452
Paul Durrant3996e852015-01-20 11:06:19 +0000453 if (section->mr == &ram_memory) {
454 return;
455 } else {
456 if (add) {
457 xen_map_memory_section(xen_xc, xen_domid, state->ioservid,
458 section);
459 } else {
460 xen_unmap_memory_section(xen_xc, xen_domid, state->ioservid,
461 section);
462 }
463 }
464
Avi Kivity20581d22011-12-19 12:07:50 +0200465 if (!memory_region_is_ram(section->mr)) {
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100466 return;
467 }
468
Paul Durrant3996e852015-01-20 11:06:19 +0000469 if (log_dirty != add) {
Avi Kivity20581d22011-12-19 12:07:50 +0200470 return;
471 }
472
473 trace_xen_client_set_memory(start_addr, size, log_dirty);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100474
475 start_addr &= TARGET_PAGE_MASK;
476 size = TARGET_PAGE_ALIGN(size);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100477
Avi Kivity20581d22011-12-19 12:07:50 +0200478 if (add) {
479 if (!memory_region_is_rom(section->mr)) {
480 xen_add_to_physmap(state, start_addr, size,
481 section->mr, section->offset_within_region);
482 } else {
483 mem_type = HVMMEM_ram_ro;
484 if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type,
485 start_addr >> TARGET_PAGE_BITS,
486 size >> TARGET_PAGE_BITS)) {
487 DPRINTF("xc_hvm_set_mem_type error, addr: "TARGET_FMT_plx"\n",
488 start_addr);
489 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100490 }
Avi Kivity20581d22011-12-19 12:07:50 +0200491 } else {
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100492 if (xen_remove_from_physmap(state, start_addr, size) < 0) {
493 DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n", start_addr);
494 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100495 }
496}
497
Avi Kivity20581d22011-12-19 12:07:50 +0200498static void xen_region_add(MemoryListener *listener,
499 MemoryRegionSection *section)
500{
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200501 memory_region_ref(section->mr);
Avi Kivity20581d22011-12-19 12:07:50 +0200502 xen_set_memory(listener, section, true);
503}
504
505static void xen_region_del(MemoryListener *listener,
506 MemoryRegionSection *section)
507{
508 xen_set_memory(listener, section, false);
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200509 memory_region_unref(section->mr);
Avi Kivity20581d22011-12-19 12:07:50 +0200510}
511
Paul Durrant3996e852015-01-20 11:06:19 +0000512static void xen_io_add(MemoryListener *listener,
513 MemoryRegionSection *section)
514{
515 XenIOState *state = container_of(listener, XenIOState, io_listener);
Paul Durranta8ff4312016-05-09 17:31:20 +0100516 MemoryRegion *mr = section->mr;
Paul Durrant3996e852015-01-20 11:06:19 +0000517
Paul Durranta8ff4312016-05-09 17:31:20 +0100518 if (mr->ops == &unassigned_io_ops) {
519 return;
520 }
521
522 memory_region_ref(mr);
Paul Durrant3996e852015-01-20 11:06:19 +0000523
524 xen_map_io_section(xen_xc, xen_domid, state->ioservid, section);
525}
526
527static void xen_io_del(MemoryListener *listener,
528 MemoryRegionSection *section)
529{
530 XenIOState *state = container_of(listener, XenIOState, io_listener);
Paul Durranta8ff4312016-05-09 17:31:20 +0100531 MemoryRegion *mr = section->mr;
532
533 if (mr->ops == &unassigned_io_ops) {
534 return;
535 }
Paul Durrant3996e852015-01-20 11:06:19 +0000536
537 xen_unmap_io_section(xen_xc, xen_domid, state->ioservid, section);
538
Paul Durranta8ff4312016-05-09 17:31:20 +0100539 memory_region_unref(mr);
Paul Durrant3996e852015-01-20 11:06:19 +0000540}
541
542static void xen_device_realize(DeviceListener *listener,
543 DeviceState *dev)
544{
545 XenIOState *state = container_of(listener, XenIOState, device_listener);
546
547 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
548 PCIDevice *pci_dev = PCI_DEVICE(dev);
549
550 xen_map_pcidev(xen_xc, xen_domid, state->ioservid, pci_dev);
551 }
552}
553
554static void xen_device_unrealize(DeviceListener *listener,
555 DeviceState *dev)
556{
557 XenIOState *state = container_of(listener, XenIOState, device_listener);
558
559 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
560 PCIDevice *pci_dev = PCI_DEVICE(dev);
561
562 xen_unmap_pcidev(xen_xc, xen_domid, state->ioservid, pci_dev);
563 }
564}
565
Anthony PERARDb18620c2012-01-05 12:47:08 +0000566static void xen_sync_dirty_bitmap(XenIOState *state,
Avi Kivitya8170e52012-10-23 12:30:10 +0200567 hwaddr start_addr,
Anthony PERARDb18620c2012-01-05 12:47:08 +0000568 ram_addr_t size)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100569{
Avi Kivitya8170e52012-10-23 12:30:10 +0200570 hwaddr npages = size >> TARGET_PAGE_BITS;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100571 const int width = sizeof(unsigned long) * 8;
Laurent Vivierd0448de2016-05-31 18:35:56 +0200572 unsigned long bitmap[DIV_ROUND_UP(npages, width)];
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100573 int rc, i, j;
574 const XenPhysmap *physmap = NULL;
575
576 physmap = get_physmapping(state, start_addr, size);
577 if (physmap == NULL) {
578 /* not handled */
Anthony PERARDb18620c2012-01-05 12:47:08 +0000579 return;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100580 }
581
582 if (state->log_for_dirtybit == NULL) {
583 state->log_for_dirtybit = physmap;
584 } else if (state->log_for_dirtybit != physmap) {
Anthony PERARDb18620c2012-01-05 12:47:08 +0000585 /* Only one range for dirty bitmap can be tracked. */
586 return;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100587 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100588
589 rc = xc_hvm_track_dirty_vram(xen_xc, xen_domid,
590 start_addr >> TARGET_PAGE_BITS, npages,
591 bitmap);
Anthony PERARDb18620c2012-01-05 12:47:08 +0000592 if (rc < 0) {
Roger Pau Monne74bc4152014-05-23 17:57:47 +0200593#ifndef ENODATA
594#define ENODATA ENOENT
595#endif
596 if (errno == ENODATA) {
Anthony PERARD8aba7dc2012-10-03 13:49:40 +0000597 memory_region_set_dirty(framebuffer, 0, size);
598 DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
Anthony PERARDb18620c2012-01-05 12:47:08 +0000599 ", 0x" TARGET_FMT_plx "): %s\n",
Roger Pau Monne74bc4152014-05-23 17:57:47 +0200600 start_addr, start_addr + size, strerror(errno));
Anthony PERARDb18620c2012-01-05 12:47:08 +0000601 }
602 return;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100603 }
604
605 for (i = 0; i < ARRAY_SIZE(bitmap); i++) {
606 unsigned long map = bitmap[i];
607 while (map != 0) {
Natanael Copaadf9d702014-04-29 16:17:28 +0200608 j = ctzl(map);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100609 map &= ~(1ul << j);
Avi Kivity5a970652011-12-21 14:21:27 +0200610 memory_region_set_dirty(framebuffer,
Blue Swirlfd4aa972011-10-16 16:04:59 +0000611 (i * width + j) * TARGET_PAGE_SIZE,
612 TARGET_PAGE_SIZE);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100613 };
614 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100615}
616
Avi Kivity20581d22011-12-19 12:07:50 +0200617static void xen_log_start(MemoryListener *listener,
Paolo Bonzinib2dfd712015-04-25 14:38:30 +0200618 MemoryRegionSection *section,
619 int old, int new)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100620{
Avi Kivity20581d22011-12-19 12:07:50 +0200621 XenIOState *state = container_of(listener, XenIOState, memory_listener);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100622
Paolo Bonzinib2dfd712015-04-25 14:38:30 +0200623 if (new & ~old & (1 << DIRTY_MEMORY_VGA)) {
624 xen_sync_dirty_bitmap(state, section->offset_within_address_space,
625 int128_get64(section->size));
626 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100627}
628
Paolo Bonzinib2dfd712015-04-25 14:38:30 +0200629static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section,
630 int old, int new)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100631{
Avi Kivity20581d22011-12-19 12:07:50 +0200632 XenIOState *state = container_of(listener, XenIOState, memory_listener);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100633
Paolo Bonzinib2dfd712015-04-25 14:38:30 +0200634 if (old & ~new & (1 << DIRTY_MEMORY_VGA)) {
635 state->log_for_dirtybit = NULL;
636 /* Disable dirty bit tracking */
637 xc_hvm_track_dirty_vram(xen_xc, xen_domid, 0, 0, NULL);
638 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100639}
640
Avi Kivity20581d22011-12-19 12:07:50 +0200641static void xen_log_sync(MemoryListener *listener, MemoryRegionSection *section)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100642{
Avi Kivity20581d22011-12-19 12:07:50 +0200643 XenIOState *state = container_of(listener, XenIOState, memory_listener);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100644
Anthony PERARDb18620c2012-01-05 12:47:08 +0000645 xen_sync_dirty_bitmap(state, section->offset_within_address_space,
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200646 int128_get64(section->size));
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100647}
648
Avi Kivity20581d22011-12-19 12:07:50 +0200649static void xen_log_global_start(MemoryListener *listener)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100650{
Anthony PERARD39f42432012-10-03 13:48:19 +0000651 if (xen_enabled()) {
652 xen_in_migration = true;
653 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100654}
655
Avi Kivity20581d22011-12-19 12:07:50 +0200656static void xen_log_global_stop(MemoryListener *listener)
657{
Anthony PERARD39f42432012-10-03 13:48:19 +0000658 xen_in_migration = false;
Avi Kivity20581d22011-12-19 12:07:50 +0200659}
660
661static MemoryListener xen_memory_listener = {
662 .region_add = xen_region_add,
663 .region_del = xen_region_del,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100664 .log_start = xen_log_start,
665 .log_stop = xen_log_stop,
Avi Kivity20581d22011-12-19 12:07:50 +0200666 .log_sync = xen_log_sync,
667 .log_global_start = xen_log_global_start,
668 .log_global_stop = xen_log_global_stop,
Avi Kivity72e22d22012-02-08 15:05:50 +0200669 .priority = 10,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100670};
Jun Nakajima432d2682010-08-31 16:41:25 +0100671
Paul Durrant3996e852015-01-20 11:06:19 +0000672static MemoryListener xen_io_listener = {
673 .region_add = xen_io_add,
674 .region_del = xen_io_del,
675 .priority = 10,
676};
677
678static DeviceListener xen_device_listener = {
679 .realize = xen_device_realize,
680 .unrealize = xen_device_unrealize,
681};
682
Arun Sharma9ce94e72010-09-06 20:07:14 +0100683/* get the ioreq packets from share mem */
684static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu)
685{
686 ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu);
687
688 if (req->state != STATE_IOREQ_READY) {
689 DPRINTF("I/O request not ready: "
690 "%x, ptr: %x, port: %"PRIx64", "
Ian Campbell47d3df22016-02-10 11:07:05 +0000691 "data: %"PRIx64", count: %u, size: %u\n",
Arun Sharma9ce94e72010-09-06 20:07:14 +0100692 req->state, req->data_is_ptr, req->addr,
693 req->data, req->count, req->size);
694 return NULL;
695 }
696
697 xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
698
699 req->state = STATE_IOREQ_INPROCESS;
700 return req;
701}
702
703/* use poll to get the port notification */
704/* ioreq_vec--out,the */
705/* retval--the number of ioreq packet */
706static ioreq_t *cpu_get_ioreq(XenIOState *state)
707{
708 int i;
709 evtchn_port_t port;
710
Ian Campbella2db2a12016-01-15 13:23:38 +0000711 port = xenevtchn_pending(state->xce_handle);
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000712 if (port == state->bufioreq_local_port) {
Alex Blighbc72ad62013-08-21 16:03:08 +0100713 timer_mod(state->buffered_io_timer,
714 BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000715 return NULL;
716 }
717
Arun Sharma9ce94e72010-09-06 20:07:14 +0100718 if (port != -1) {
Anthony PERARD1cd25a82013-09-25 16:41:48 +0000719 for (i = 0; i < max_cpus; i++) {
Arun Sharma9ce94e72010-09-06 20:07:14 +0100720 if (state->ioreq_local_port[i] == port) {
721 break;
722 }
723 }
724
Anthony PERARD1cd25a82013-09-25 16:41:48 +0000725 if (i == max_cpus) {
Arun Sharma9ce94e72010-09-06 20:07:14 +0100726 hw_error("Fatal error while trying to get io event!\n");
727 }
728
729 /* unmask the wanted port again */
Ian Campbella2db2a12016-01-15 13:23:38 +0000730 xenevtchn_unmask(state->xce_handle, port);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100731
732 /* get the io packet from shared memory */
733 state->send_vcpu = i;
734 return cpu_get_ioreq_from_shared_memory(state, i);
735 }
736
737 /* read error or read nothing */
738 return NULL;
739}
740
Paolo Bonzini89a80e72016-03-16 10:20:34 +0100741static uint32_t do_inp(uint32_t addr, unsigned long size)
Arun Sharma9ce94e72010-09-06 20:07:14 +0100742{
743 switch (size) {
744 case 1:
745 return cpu_inb(addr);
746 case 2:
747 return cpu_inw(addr);
748 case 4:
749 return cpu_inl(addr);
750 default:
Paolo Bonzini89a80e72016-03-16 10:20:34 +0100751 hw_error("inp: bad size: %04x %lx", addr, size);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100752 }
753}
754
Paolo Bonzini89a80e72016-03-16 10:20:34 +0100755static void do_outp(uint32_t addr,
Arun Sharma9ce94e72010-09-06 20:07:14 +0100756 unsigned long size, uint32_t val)
757{
758 switch (size) {
759 case 1:
760 return cpu_outb(addr, val);
761 case 2:
762 return cpu_outw(addr, val);
763 case 4:
764 return cpu_outl(addr, val);
765 default:
Paolo Bonzini89a80e72016-03-16 10:20:34 +0100766 hw_error("outp: bad size: %04x %lx", addr, size);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100767 }
768}
769
Ian Jacksona3864822012-12-17 11:43:19 +0000770/*
771 * Helper functions which read/write an object from/to physical guest
772 * memory, as part of the implementation of an ioreq.
773 *
774 * Equivalent to
775 * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i,
776 * val, req->size, 0/1)
777 * except without the integer overflow problems.
778 */
779static void rw_phys_req_item(hwaddr addr,
780 ioreq_t *req, uint32_t i, void *val, int rw)
781{
782 /* Do everything unsigned so overflow just results in a truncated result
783 * and accesses to undesired parts of guest memory, which is up
784 * to the guest */
785 hwaddr offset = (hwaddr)req->size * i;
786 if (req->df) {
787 addr -= offset;
788 } else {
789 addr += offset;
790 }
791 cpu_physical_memory_rw(addr, val, req->size, rw);
792}
793
794static inline void read_phys_req_item(hwaddr addr,
795 ioreq_t *req, uint32_t i, void *val)
796{
797 rw_phys_req_item(addr, req, i, val, 0);
798}
799static inline void write_phys_req_item(hwaddr addr,
800 ioreq_t *req, uint32_t i, void *val)
801{
802 rw_phys_req_item(addr, req, i, val, 1);
803}
804
805
Arun Sharma9ce94e72010-09-06 20:07:14 +0100806static void cpu_ioreq_pio(ioreq_t *req)
807{
Ian Jackson249e7e02012-12-17 11:44:02 +0000808 uint32_t i;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100809
Don Slutzeeb6b132015-04-30 14:27:09 -0400810 trace_cpu_ioreq_pio(req, req->dir, req->df, req->data_is_ptr, req->addr,
811 req->data, req->count, req->size);
812
Arun Sharma9ce94e72010-09-06 20:07:14 +0100813 if (req->dir == IOREQ_READ) {
814 if (!req->data_is_ptr) {
815 req->data = do_inp(req->addr, req->size);
Don Slutzeeb6b132015-04-30 14:27:09 -0400816 trace_cpu_ioreq_pio_read_reg(req, req->data, req->addr,
817 req->size);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100818 } else {
819 uint32_t tmp;
820
821 for (i = 0; i < req->count; i++) {
822 tmp = do_inp(req->addr, req->size);
Ian Jacksona3864822012-12-17 11:43:19 +0000823 write_phys_req_item(req->data, req, i, &tmp);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100824 }
825 }
826 } else if (req->dir == IOREQ_WRITE) {
827 if (!req->data_is_ptr) {
Don Slutzeeb6b132015-04-30 14:27:09 -0400828 trace_cpu_ioreq_pio_write_reg(req, req->data, req->addr,
829 req->size);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100830 do_outp(req->addr, req->size, req->data);
831 } else {
832 for (i = 0; i < req->count; i++) {
833 uint32_t tmp = 0;
834
Ian Jacksona3864822012-12-17 11:43:19 +0000835 read_phys_req_item(req->data, req, i, &tmp);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100836 do_outp(req->addr, req->size, tmp);
837 }
838 }
839 }
840}
841
842static void cpu_ioreq_move(ioreq_t *req)
843{
Ian Jackson249e7e02012-12-17 11:44:02 +0000844 uint32_t i;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100845
Don Slutzeeb6b132015-04-30 14:27:09 -0400846 trace_cpu_ioreq_move(req, req->dir, req->df, req->data_is_ptr, req->addr,
847 req->data, req->count, req->size);
848
Arun Sharma9ce94e72010-09-06 20:07:14 +0100849 if (!req->data_is_ptr) {
850 if (req->dir == IOREQ_READ) {
851 for (i = 0; i < req->count; i++) {
Ian Jacksona3864822012-12-17 11:43:19 +0000852 read_phys_req_item(req->addr, req, i, &req->data);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100853 }
854 } else if (req->dir == IOREQ_WRITE) {
855 for (i = 0; i < req->count; i++) {
Ian Jacksona3864822012-12-17 11:43:19 +0000856 write_phys_req_item(req->addr, req, i, &req->data);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100857 }
858 }
859 } else {
Stefano Stabellini2b734342011-05-20 16:57:24 +0000860 uint64_t tmp;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100861
862 if (req->dir == IOREQ_READ) {
863 for (i = 0; i < req->count; i++) {
Ian Jacksona3864822012-12-17 11:43:19 +0000864 read_phys_req_item(req->addr, req, i, &tmp);
865 write_phys_req_item(req->data, req, i, &tmp);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100866 }
867 } else if (req->dir == IOREQ_WRITE) {
868 for (i = 0; i < req->count; i++) {
Ian Jacksona3864822012-12-17 11:43:19 +0000869 read_phys_req_item(req->data, req, i, &tmp);
870 write_phys_req_item(req->addr, req, i, &tmp);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100871 }
872 }
873 }
874}
875
Don Slutz37f9e252014-10-20 15:49:12 -0400876static void regs_to_cpu(vmware_regs_t *vmport_regs, ioreq_t *req)
877{
878 X86CPU *cpu;
879 CPUX86State *env;
880
881 cpu = X86_CPU(current_cpu);
882 env = &cpu->env;
883 env->regs[R_EAX] = req->data;
884 env->regs[R_EBX] = vmport_regs->ebx;
885 env->regs[R_ECX] = vmport_regs->ecx;
886 env->regs[R_EDX] = vmport_regs->edx;
887 env->regs[R_ESI] = vmport_regs->esi;
888 env->regs[R_EDI] = vmport_regs->edi;
889}
890
891static void regs_from_cpu(vmware_regs_t *vmport_regs)
892{
893 X86CPU *cpu = X86_CPU(current_cpu);
894 CPUX86State *env = &cpu->env;
895
896 vmport_regs->ebx = env->regs[R_EBX];
897 vmport_regs->ecx = env->regs[R_ECX];
898 vmport_regs->edx = env->regs[R_EDX];
899 vmport_regs->esi = env->regs[R_ESI];
900 vmport_regs->edi = env->regs[R_EDI];
901}
902
903static void handle_vmport_ioreq(XenIOState *state, ioreq_t *req)
904{
905 vmware_regs_t *vmport_regs;
906
907 assert(state->shared_vmport_page);
908 vmport_regs =
909 &state->shared_vmport_page->vcpu_vmport_regs[state->send_vcpu];
910 QEMU_BUILD_BUG_ON(sizeof(*req) < sizeof(*vmport_regs));
911
912 current_cpu = state->cpu_by_vcpu_id[state->send_vcpu];
913 regs_to_cpu(vmport_regs, req);
914 cpu_ioreq_pio(req);
915 regs_from_cpu(vmport_regs);
916 current_cpu = NULL;
917}
918
919static void handle_ioreq(XenIOState *state, ioreq_t *req)
Arun Sharma9ce94e72010-09-06 20:07:14 +0100920{
Don Slutzeeb6b132015-04-30 14:27:09 -0400921 trace_handle_ioreq(req, req->type, req->dir, req->df, req->data_is_ptr,
922 req->addr, req->data, req->count, req->size);
923
Arun Sharma9ce94e72010-09-06 20:07:14 +0100924 if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
925 (req->size < sizeof (target_ulong))) {
926 req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
927 }
928
Don Slutzeeb6b132015-04-30 14:27:09 -0400929 if (req->dir == IOREQ_WRITE)
930 trace_handle_ioreq_write(req, req->type, req->df, req->data_is_ptr,
931 req->addr, req->data, req->count, req->size);
932
Arun Sharma9ce94e72010-09-06 20:07:14 +0100933 switch (req->type) {
934 case IOREQ_TYPE_PIO:
935 cpu_ioreq_pio(req);
936 break;
937 case IOREQ_TYPE_COPY:
938 cpu_ioreq_move(req);
939 break;
Don Slutz37f9e252014-10-20 15:49:12 -0400940 case IOREQ_TYPE_VMWARE_PORT:
941 handle_vmport_ioreq(state, req);
942 break;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100943 case IOREQ_TYPE_TIMEOFFSET:
944 break;
945 case IOREQ_TYPE_INVALIDATE:
Jan Kiszkae41d7c62011-06-21 22:59:08 +0200946 xen_invalidate_map_cache();
Arun Sharma9ce94e72010-09-06 20:07:14 +0100947 break;
Paul Durrant3996e852015-01-20 11:06:19 +0000948 case IOREQ_TYPE_PCI_CONFIG: {
949 uint32_t sbdf = req->addr >> 32;
950 uint32_t val;
951
952 /* Fake a write to port 0xCF8 so that
953 * the config space access will target the
954 * correct device model.
955 */
956 val = (1u << 31) |
957 ((req->addr & 0x0f00) << 16) |
958 ((sbdf & 0xffff) << 8) |
959 (req->addr & 0xfc);
960 do_outp(0xcf8, 4, val);
961
962 /* Now issue the config space access via
963 * port 0xCFC
964 */
965 req->addr = 0xcfc | (req->addr & 0x03);
966 cpu_ioreq_pio(req);
967 break;
968 }
Arun Sharma9ce94e72010-09-06 20:07:14 +0100969 default:
970 hw_error("Invalid ioreq type 0x%x\n", req->type);
971 }
Don Slutzeeb6b132015-04-30 14:27:09 -0400972 if (req->dir == IOREQ_READ) {
973 trace_handle_ioreq_read(req, req->type, req->df, req->data_is_ptr,
974 req->addr, req->data, req->count, req->size);
975 }
Arun Sharma9ce94e72010-09-06 20:07:14 +0100976}
977
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000978static int handle_buffered_iopage(XenIOState *state)
Arun Sharma9ce94e72010-09-06 20:07:14 +0100979{
Jan Beulichd8b441a2015-07-24 03:38:28 -0600980 buffered_iopage_t *buf_page = state->buffered_io_page;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100981 buf_ioreq_t *buf_req = NULL;
982 ioreq_t req;
983 int qw;
984
Jan Beulichd8b441a2015-07-24 03:38:28 -0600985 if (!buf_page) {
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000986 return 0;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100987 }
988
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000989 memset(&req, 0x00, sizeof(req));
990
Jan Beulichd8b441a2015-07-24 03:38:28 -0600991 for (;;) {
992 uint32_t rdptr = buf_page->read_pointer, wrptr;
993
994 xen_rmb();
995 wrptr = buf_page->write_pointer;
996 xen_rmb();
997 if (rdptr != buf_page->read_pointer) {
998 continue;
999 }
1000 if (rdptr == wrptr) {
1001 break;
1002 }
1003 buf_req = &buf_page->buf_ioreq[rdptr % IOREQ_BUFFER_SLOT_NUM];
Arun Sharma9ce94e72010-09-06 20:07:14 +01001004 req.size = 1UL << buf_req->size;
1005 req.count = 1;
1006 req.addr = buf_req->addr;
1007 req.data = buf_req->data;
1008 req.state = STATE_IOREQ_READY;
1009 req.dir = buf_req->dir;
1010 req.df = 1;
1011 req.type = buf_req->type;
1012 req.data_is_ptr = 0;
1013 qw = (req.size == 8);
1014 if (qw) {
Jan Beulichd8b441a2015-07-24 03:38:28 -06001015 buf_req = &buf_page->buf_ioreq[(rdptr + 1) %
1016 IOREQ_BUFFER_SLOT_NUM];
Arun Sharma9ce94e72010-09-06 20:07:14 +01001017 req.data |= ((uint64_t)buf_req->data) << 32;
1018 }
1019
Don Slutz37f9e252014-10-20 15:49:12 -04001020 handle_ioreq(state, &req);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001021
Jan Beulichd8b441a2015-07-24 03:38:28 -06001022 atomic_add(&buf_page->read_pointer, qw + 1);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001023 }
Stefano Stabellinifda1f762012-04-13 17:46:01 +00001024
1025 return req.count;
Arun Sharma9ce94e72010-09-06 20:07:14 +01001026}
1027
1028static void handle_buffered_io(void *opaque)
1029{
1030 XenIOState *state = opaque;
1031
Stefano Stabellinifda1f762012-04-13 17:46:01 +00001032 if (handle_buffered_iopage(state)) {
Alex Blighbc72ad62013-08-21 16:03:08 +01001033 timer_mod(state->buffered_io_timer,
1034 BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
Stefano Stabellinifda1f762012-04-13 17:46:01 +00001035 } else {
Alex Blighbc72ad62013-08-21 16:03:08 +01001036 timer_del(state->buffered_io_timer);
Ian Campbella2db2a12016-01-15 13:23:38 +00001037 xenevtchn_unmask(state->xce_handle, state->bufioreq_local_port);
Stefano Stabellinifda1f762012-04-13 17:46:01 +00001038 }
Arun Sharma9ce94e72010-09-06 20:07:14 +01001039}
1040
1041static void cpu_handle_ioreq(void *opaque)
1042{
1043 XenIOState *state = opaque;
1044 ioreq_t *req = cpu_get_ioreq(state);
1045
1046 handle_buffered_iopage(state);
1047 if (req) {
Don Slutz37f9e252014-10-20 15:49:12 -04001048 handle_ioreq(state, req);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001049
1050 if (req->state != STATE_IOREQ_INPROCESS) {
1051 fprintf(stderr, "Badness in I/O request ... not in service?!: "
1052 "%x, ptr: %x, port: %"PRIx64", "
Ian Campbell47d3df22016-02-10 11:07:05 +00001053 "data: %"PRIx64", count: %u, size: %u, type: %u\n",
Arun Sharma9ce94e72010-09-06 20:07:14 +01001054 req->state, req->data_is_ptr, req->addr,
Don Slutz37f9e252014-10-20 15:49:12 -04001055 req->data, req->count, req->size, req->type);
John V. Baboval180640e2012-05-17 10:33:09 +00001056 destroy_hvm_domain(false);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001057 return;
1058 }
1059
1060 xen_wmb(); /* Update ioreq contents /then/ update state. */
1061
1062 /*
1063 * We do this before we send the response so that the tools
1064 * have the opportunity to pick up on the reset before the
1065 * guest resumes and does a hlt with interrupts disabled which
1066 * causes Xen to powerdown the domain.
1067 */
Luiz Capitulino13548692011-07-29 15:36:43 -03001068 if (runstate_is_running()) {
Arun Sharma9ce94e72010-09-06 20:07:14 +01001069 if (qemu_shutdown_requested_get()) {
John V. Baboval180640e2012-05-17 10:33:09 +00001070 destroy_hvm_domain(false);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001071 }
1072 if (qemu_reset_requested_get()) {
Jan Kiszkae063eb12011-06-14 18:29:43 +02001073 qemu_system_reset(VMRESET_REPORT);
John V. Baboval180640e2012-05-17 10:33:09 +00001074 destroy_hvm_domain(true);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001075 }
1076 }
1077
1078 req->state = STATE_IORESP_READY;
Ian Campbella2db2a12016-01-15 13:23:38 +00001079 xenevtchn_notify(state->xce_handle,
1080 state->ioreq_local_port[state->send_vcpu]);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001081 }
1082}
1083
1084static void xen_main_loop_prepare(XenIOState *state)
1085{
1086 int evtchn_fd = -1;
1087
Ian Campbella2db2a12016-01-15 13:23:38 +00001088 if (state->xce_handle != NULL) {
1089 evtchn_fd = xenevtchn_fd(state->xce_handle);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001090 }
1091
Alex Blighbc72ad62013-08-21 16:03:08 +01001092 state->buffered_io_timer = timer_new_ms(QEMU_CLOCK_REALTIME, handle_buffered_io,
Arun Sharma9ce94e72010-09-06 20:07:14 +01001093 state);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001094
1095 if (evtchn_fd != -1) {
Don Slutz37f9e252014-10-20 15:49:12 -04001096 CPUState *cpu_state;
1097
1098 DPRINTF("%s: Init cpu_by_vcpu_id\n", __func__);
1099 CPU_FOREACH(cpu_state) {
1100 DPRINTF("%s: cpu_by_vcpu_id[%d]=%p\n",
1101 __func__, cpu_state->cpu_index, cpu_state);
1102 state->cpu_by_vcpu_id[cpu_state->cpu_index] = cpu_state;
1103 }
Arun Sharma9ce94e72010-09-06 20:07:14 +01001104 qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
1105 }
1106}
1107
1108
Luiz Capitulino1dfb4dd2011-07-29 14:26:33 -03001109static void xen_hvm_change_state_handler(void *opaque, int running,
1110 RunState rstate)
Arun Sharma9ce94e72010-09-06 20:07:14 +01001111{
Paul Durrant3996e852015-01-20 11:06:19 +00001112 XenIOState *state = opaque;
1113
Arun Sharma9ce94e72010-09-06 20:07:14 +01001114 if (running) {
Paul Durrant3996e852015-01-20 11:06:19 +00001115 xen_main_loop_prepare(state);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001116 }
Paul Durrant3996e852015-01-20 11:06:19 +00001117
1118 xen_set_ioreq_server_state(xen_xc, xen_domid,
1119 state->ioservid,
1120 (rstate == RUN_STATE_RUNNING));
Arun Sharma9ce94e72010-09-06 20:07:14 +01001121}
1122
Jan Kiszka9e8dd452011-06-20 14:06:26 +02001123static void xen_exit_notifier(Notifier *n, void *data)
Arun Sharma9ce94e72010-09-06 20:07:14 +01001124{
1125 XenIOState *state = container_of(n, XenIOState, exit);
1126
Ian Campbella2db2a12016-01-15 13:23:38 +00001127 xenevtchn_close(state->xce_handle);
Anthony PERARD29321332010-09-06 20:07:33 +01001128 xs_daemon_close(state->xenstore);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001129}
1130
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001131static void xen_read_physmap(XenIOState *state)
1132{
1133 XenPhysmap *physmap = NULL;
1134 unsigned int len, num, i;
1135 char path[80], *value = NULL;
1136 char **entries = NULL;
1137
1138 snprintf(path, sizeof(path),
1139 "/local/domain/0/device-model/%d/physmap", xen_domid);
1140 entries = xs_directory(state->xenstore, 0, path, &num);
1141 if (entries == NULL)
1142 return;
1143
1144 for (i = 0; i < num; i++) {
1145 physmap = g_malloc(sizeof (XenPhysmap));
1146 physmap->phys_offset = strtoull(entries[i], NULL, 16);
1147 snprintf(path, sizeof(path),
1148 "/local/domain/0/device-model/%d/physmap/%s/start_addr",
1149 xen_domid, entries[i]);
1150 value = xs_read(state->xenstore, 0, path, &len);
1151 if (value == NULL) {
Stefan Weilc5633d92013-06-10 22:36:22 +02001152 g_free(physmap);
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001153 continue;
1154 }
1155 physmap->start_addr = strtoull(value, NULL, 16);
1156 free(value);
1157
1158 snprintf(path, sizeof(path),
1159 "/local/domain/0/device-model/%d/physmap/%s/size",
1160 xen_domid, entries[i]);
1161 value = xs_read(state->xenstore, 0, path, &len);
1162 if (value == NULL) {
Stefan Weilc5633d92013-06-10 22:36:22 +02001163 g_free(physmap);
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001164 continue;
1165 }
1166 physmap->size = strtoull(value, NULL, 16);
1167 free(value);
1168
1169 snprintf(path, sizeof(path),
1170 "/local/domain/0/device-model/%d/physmap/%s/name",
1171 xen_domid, entries[i]);
1172 physmap->name = xs_read(state->xenstore, 0, path, &len);
1173
1174 QLIST_INSERT_HEAD(&state->physmap, physmap, list);
1175 }
1176 free(entries);
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001177}
1178
Liu, Jinsong11addd02013-09-25 16:40:23 +00001179static void xen_wakeup_notifier(Notifier *notifier, void *data)
1180{
1181 xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
1182}
1183
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001184void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
Anthony PERARD29d3ccd2010-06-30 12:58:34 +01001185{
Arun Sharma9ce94e72010-09-06 20:07:14 +01001186 int i, rc;
Paul Durrant3996e852015-01-20 11:06:19 +00001187 xen_pfn_t ioreq_pfn;
1188 xen_pfn_t bufioreq_pfn;
1189 evtchn_port_t bufioreq_evtchn;
Arun Sharma9ce94e72010-09-06 20:07:14 +01001190 XenIOState *state;
1191
Anthony Liguori7267c092011-08-20 22:09:37 -05001192 state = g_malloc0(sizeof (XenIOState));
Arun Sharma9ce94e72010-09-06 20:07:14 +01001193
Ian Campbella2db2a12016-01-15 13:23:38 +00001194 state->xce_handle = xenevtchn_open(NULL, 0);
1195 if (state->xce_handle == NULL) {
Arun Sharma9ce94e72010-09-06 20:07:14 +01001196 perror("xen: event channel open");
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001197 goto err;
Arun Sharma9ce94e72010-09-06 20:07:14 +01001198 }
1199
Anthony PERARD29321332010-09-06 20:07:33 +01001200 state->xenstore = xs_daemon_open();
1201 if (state->xenstore == NULL) {
1202 perror("xen: xenstore open");
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001203 goto err;
Anthony PERARD29321332010-09-06 20:07:33 +01001204 }
1205
Paul Durrantb7665c62016-08-01 10:16:25 +01001206 xen_create_ioreq_server(xen_xc, xen_domid, &state->ioservid);
Paul Durrant3996e852015-01-20 11:06:19 +00001207
Arun Sharma9ce94e72010-09-06 20:07:14 +01001208 state->exit.notify = xen_exit_notifier;
1209 qemu_add_exit_notifier(&state->exit);
1210
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +01001211 state->suspend.notify = xen_suspend_notifier;
1212 qemu_register_suspend_notifier(&state->suspend);
1213
Liu, Jinsong11addd02013-09-25 16:40:23 +00001214 state->wakeup.notify = xen_wakeup_notifier;
1215 qemu_register_wakeup_notifier(&state->wakeup);
1216
Paul Durrant3996e852015-01-20 11:06:19 +00001217 rc = xen_get_ioreq_server_info(xen_xc, xen_domid, state->ioservid,
1218 &ioreq_pfn, &bufioreq_pfn,
1219 &bufioreq_evtchn);
1220 if (rc < 0) {
Ian Campbell81daba582016-02-10 11:07:03 +00001221 error_report("failed to get ioreq server info: error %d handle=%p",
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001222 errno, xen_xc);
1223 goto err;
Paul Durrant3996e852015-01-20 11:06:19 +00001224 }
1225
Arun Sharma9ce94e72010-09-06 20:07:14 +01001226 DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
Paul Durrant3996e852015-01-20 11:06:19 +00001227 DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn);
1228 DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn);
1229
Ian Campbelle0cb42a2016-01-15 13:23:41 +00001230 state->shared_page = xenforeignmemory_map(xen_fmem, xen_domid,
Ian Campbell9ed257d2016-01-15 13:23:40 +00001231 PROT_READ|PROT_WRITE,
Ian Campbelle0cb42a2016-01-15 13:23:41 +00001232 1, &ioreq_pfn, NULL);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001233 if (state->shared_page == NULL) {
Ian Campbell81daba582016-02-10 11:07:03 +00001234 error_report("map shared IO page returned error %d handle=%p",
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001235 errno, xen_xc);
1236 goto err;
Arun Sharma9ce94e72010-09-06 20:07:14 +01001237 }
1238
Don Slutz37f9e252014-10-20 15:49:12 -04001239 rc = xen_get_vmport_regs_pfn(xen_xc, xen_domid, &ioreq_pfn);
1240 if (!rc) {
1241 DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn);
1242 state->shared_vmport_page =
Ian Campbelle0cb42a2016-01-15 13:23:41 +00001243 xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE,
1244 1, &ioreq_pfn, NULL);
Don Slutz37f9e252014-10-20 15:49:12 -04001245 if (state->shared_vmport_page == NULL) {
Ian Campbell81daba582016-02-10 11:07:03 +00001246 error_report("map shared vmport IO page returned error %d handle=%p",
1247 errno, xen_xc);
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001248 goto err;
Don Slutz37f9e252014-10-20 15:49:12 -04001249 }
1250 } else if (rc != -ENOSYS) {
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001251 error_report("get vmport regs pfn returned error %d, rc=%d",
1252 errno, rc);
1253 goto err;
Don Slutz37f9e252014-10-20 15:49:12 -04001254 }
1255
Ian Campbelle0cb42a2016-01-15 13:23:41 +00001256 state->buffered_io_page = xenforeignmemory_map(xen_fmem, xen_domid,
Paul Durrant3996e852015-01-20 11:06:19 +00001257 PROT_READ|PROT_WRITE,
Ian Campbelle0cb42a2016-01-15 13:23:41 +00001258 1, &bufioreq_pfn, NULL);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001259 if (state->buffered_io_page == NULL) {
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001260 error_report("map buffered IO page returned error %d", errno);
1261 goto err;
Arun Sharma9ce94e72010-09-06 20:07:14 +01001262 }
1263
Don Slutz37f9e252014-10-20 15:49:12 -04001264 /* Note: cpus is empty at this point in init */
1265 state->cpu_by_vcpu_id = g_malloc0(max_cpus * sizeof(CPUState *));
1266
Paul Durrant3996e852015-01-20 11:06:19 +00001267 rc = xen_set_ioreq_server_state(xen_xc, xen_domid, state->ioservid, true);
1268 if (rc < 0) {
Ian Campbell81daba582016-02-10 11:07:03 +00001269 error_report("failed to enable ioreq server info: error %d handle=%p",
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001270 errno, xen_xc);
1271 goto err;
Paul Durrant3996e852015-01-20 11:06:19 +00001272 }
1273
Anthony PERARD1cd25a82013-09-25 16:41:48 +00001274 state->ioreq_local_port = g_malloc0(max_cpus * sizeof (evtchn_port_t));
Arun Sharma9ce94e72010-09-06 20:07:14 +01001275
1276 /* FIXME: how about if we overflow the page here? */
Anthony PERARD1cd25a82013-09-25 16:41:48 +00001277 for (i = 0; i < max_cpus; i++) {
Ian Campbella2db2a12016-01-15 13:23:38 +00001278 rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
Arun Sharma9ce94e72010-09-06 20:07:14 +01001279 xen_vcpu_eport(state->shared_page, i));
1280 if (rc == -1) {
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001281 error_report("shared evtchn %d bind error %d", i, errno);
1282 goto err;
Arun Sharma9ce94e72010-09-06 20:07:14 +01001283 }
1284 state->ioreq_local_port[i] = rc;
1285 }
1286
Ian Campbella2db2a12016-01-15 13:23:38 +00001287 rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
Paul Durrant3996e852015-01-20 11:06:19 +00001288 bufioreq_evtchn);
Stefano Stabellinifda1f762012-04-13 17:46:01 +00001289 if (rc == -1) {
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001290 error_report("buffered evtchn bind error %d", errno);
1291 goto err;
Stefano Stabellinifda1f762012-04-13 17:46:01 +00001292 }
1293 state->bufioreq_local_port = rc;
1294
Jun Nakajima432d2682010-08-31 16:41:25 +01001295 /* Init RAM management */
Anthony PERARDcd1ba7d2012-01-18 12:21:38 +00001296 xen_map_cache_init(xen_phys_offset_to_gaddr, state);
Eduardo Habkost91176e32015-08-17 11:42:29 -07001297 xen_ram_init(pcms, ram_size, ram_memory);
Jun Nakajima432d2682010-08-31 16:41:25 +01001298
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +00001299 qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001300
Avi Kivity20581d22011-12-19 12:07:50 +02001301 state->memory_listener = xen_memory_listener;
Anthony PERARDb4dd7802011-05-24 14:34:21 +01001302 QLIST_INIT(&state->physmap);
Avi Kivityf6790af2012-10-02 20:13:51 +02001303 memory_listener_register(&state->memory_listener, &address_space_memory);
Anthony PERARDb4dd7802011-05-24 14:34:21 +01001304 state->log_for_dirtybit = NULL;
1305
Paul Durrant3996e852015-01-20 11:06:19 +00001306 state->io_listener = xen_io_listener;
1307 memory_listener_register(&state->io_listener, &address_space_io);
1308
1309 state->device_listener = xen_device_listener;
1310 device_listener_register(&state->device_listener);
1311
Stefano Stabelliniad35a7d2011-06-24 15:54:48 +01001312 /* Initialize backend core & drivers */
1313 if (xen_be_init() != 0) {
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001314 error_report("xen backend core setup failed");
1315 goto err;
Stefano Stabelliniad35a7d2011-06-24 15:54:48 +01001316 }
Juergen Gross0e39bb02016-08-02 08:32:32 +02001317 xen_be_register_common();
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001318 xen_read_physmap(state);
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001319 return;
Stefano Stabelliniad35a7d2011-06-24 15:54:48 +01001320
Markus Armbrusterdced4d22016-01-14 16:09:38 +01001321err:
1322 error_report("xen hardware virtual machine initialisation failed");
1323 exit(1);
Anthony PERARD29d3ccd2010-06-30 12:58:34 +01001324}
Arun Sharma9ce94e72010-09-06 20:07:14 +01001325
John V. Baboval180640e2012-05-17 10:33:09 +00001326void destroy_hvm_domain(bool reboot)
Arun Sharma9ce94e72010-09-06 20:07:14 +01001327{
Ian Campbell81daba582016-02-10 11:07:03 +00001328 xc_interface *xc_handle;
Arun Sharma9ce94e72010-09-06 20:07:14 +01001329 int sts;
1330
Ian Campbell81daba582016-02-10 11:07:03 +00001331 xc_handle = xc_interface_open(0, 0, 0);
1332 if (xc_handle == NULL) {
Arun Sharma9ce94e72010-09-06 20:07:14 +01001333 fprintf(stderr, "Cannot acquire xenctrl handle\n");
1334 } else {
John V. Baboval180640e2012-05-17 10:33:09 +00001335 sts = xc_domain_shutdown(xc_handle, xen_domid,
1336 reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001337 if (sts != 0) {
John V. Baboval180640e2012-05-17 10:33:09 +00001338 fprintf(stderr, "xc_domain_shutdown failed to issue %s, "
1339 "sts %d, %s\n", reboot ? "reboot" : "poweroff",
1340 sts, strerror(errno));
Arun Sharma9ce94e72010-09-06 20:07:14 +01001341 } else {
John V. Baboval180640e2012-05-17 10:33:09 +00001342 fprintf(stderr, "Issued domain %d %s\n", xen_domid,
1343 reboot ? "reboot" : "poweroff");
Arun Sharma9ce94e72010-09-06 20:07:14 +01001344 }
1345 xc_interface_close(xc_handle);
1346 }
1347}
Avi Kivityc65adf92011-12-18 16:40:50 +02001348
1349void xen_register_framebuffer(MemoryRegion *mr)
1350{
1351 framebuffer = mr;
1352}
Allen Kayeaab4d62012-06-21 15:40:09 +00001353
1354void xen_shutdown_fatal_error(const char *fmt, ...)
1355{
1356 va_list ap;
1357
1358 va_start(ap, fmt);
1359 vfprintf(stderr, fmt, ap);
1360 va_end(ap);
1361 fprintf(stderr, "Will destroy the domain.\n");
1362 /* destroy the domain */
1363 qemu_system_shutdown_request();
1364}
Anthony PERARD910b38e2012-10-03 13:48:45 +00001365
1366void xen_modified_memory(ram_addr_t start, ram_addr_t length)
1367{
1368 if (unlikely(xen_in_migration)) {
1369 int rc;
1370 ram_addr_t start_pfn, nb_pages;
1371
1372 if (length == 0) {
1373 length = TARGET_PAGE_SIZE;
1374 }
1375 start_pfn = start >> TARGET_PAGE_BITS;
1376 nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >> TARGET_PAGE_BITS)
1377 - start_pfn;
1378 rc = xc_hvm_modified_memory(xen_xc, xen_domid, start_pfn, nb_pages);
1379 if (rc) {
1380 fprintf(stderr,
1381 "%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n",
1382 __func__, start, nb_pages, rc, strerror(-rc));
1383 }
1384 }
1385}
Wei Liu04b0de02014-05-07 16:16:43 +00001386
1387void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
1388{
1389 if (enable) {
1390 memory_global_dirty_log_start();
1391 } else {
1392 memory_global_dirty_log_stop();
1393 }
1394}