blob: 10af44c66dd9c93f253ff6e31b6982a20db38ef2 [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
Arun Sharma9ce94e72010-09-06 20:07:14 +010011#include <sys/mman.h>
12
Michael S. Tsirkina2cb15b2012-12-12 14:24:50 +020013#include "hw/pci/pci.h"
Paolo Bonzini0d09e412013-02-05 17:06:20 +010014#include "hw/i386/pc.h"
15#include "hw/xen/xen_common.h"
16#include "hw/xen/xen_backend.h"
Anthony PERARD39f42432012-10-03 13:48:19 +000017#include "qmp-commands.h"
Anthony PERARD3285cf42010-08-19 12:27:56 +010018
Paolo Bonzinidccfcd02013-04-08 16:55:25 +020019#include "sysemu/char.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010020#include "qemu/range.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010021#include "sysemu/xen-mapcache.h"
Jun Nakajima432d2682010-08-31 16:41:25 +010022#include "trace.h"
Paolo Bonzini022c62c2012-12-17 18:19:49 +010023#include "exec/address-spaces.h"
Jun Nakajima432d2682010-08-31 16:41:25 +010024
Arun Sharma9ce94e72010-09-06 20:07:14 +010025#include <xen/hvm/ioreq.h>
26#include <xen/hvm/params.h>
Anthony PERARD8a369e22011-07-20 08:17:43 +000027#include <xen/hvm/e820.h>
Arun Sharma9ce94e72010-09-06 20:07:14 +010028
29//#define DEBUG_XEN
30
31#ifdef DEBUG_XEN
32#define DPRINTF(fmt, ...) \
33 do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
34#else
35#define DPRINTF(fmt, ...) \
36 do { } while (0)
37#endif
38
Avi Kivityce76b8a2011-12-18 16:27:48 +020039static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi;
Avi Kivityc65adf92011-12-18 16:40:50 +020040static MemoryRegion *framebuffer;
Anthony PERARD39f42432012-10-03 13:48:19 +000041static bool xen_in_migration;
Avi Kivityce76b8a2011-12-18 16:27:48 +020042
Arun Sharma9ce94e72010-09-06 20:07:14 +010043/* Compatibility with older version */
44#if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a
45static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
46{
47 return shared_page->vcpu_iodata[i].vp_eport;
48}
49static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
50{
51 return &shared_page->vcpu_iodata[vcpu].vp_ioreq;
52}
53# define FMT_ioreq_size PRIx64
54#else
55static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
56{
57 return shared_page->vcpu_ioreq[i].vp_eport;
58}
59static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
60{
61 return &shared_page->vcpu_ioreq[vcpu];
62}
63# define FMT_ioreq_size "u"
64#endif
Stefano Stabellinifda1f762012-04-13 17:46:01 +000065#ifndef HVM_PARAM_BUFIOREQ_EVTCHN
66#define HVM_PARAM_BUFIOREQ_EVTCHN 26
67#endif
Arun Sharma9ce94e72010-09-06 20:07:14 +010068
69#define BUFFER_IO_MAX_DELAY 100
70
Anthony PERARDb4dd7802011-05-24 14:34:21 +010071typedef struct XenPhysmap {
Avi Kivitya8170e52012-10-23 12:30:10 +020072 hwaddr start_addr;
Anthony PERARDb4dd7802011-05-24 14:34:21 +010073 ram_addr_t size;
Stefano Stabellinid1814e02012-01-19 15:56:11 +000074 char *name;
Avi Kivitya8170e52012-10-23 12:30:10 +020075 hwaddr phys_offset;
Anthony PERARDb4dd7802011-05-24 14:34:21 +010076
77 QLIST_ENTRY(XenPhysmap) list;
78} XenPhysmap;
79
Arun Sharma9ce94e72010-09-06 20:07:14 +010080typedef struct XenIOState {
81 shared_iopage_t *shared_page;
82 buffered_iopage_t *buffered_io_page;
83 QEMUTimer *buffered_io_timer;
84 /* the evtchn port for polling the notification, */
85 evtchn_port_t *ioreq_local_port;
Stefano Stabellinifda1f762012-04-13 17:46:01 +000086 /* evtchn local port for buffered io */
87 evtchn_port_t bufioreq_local_port;
Arun Sharma9ce94e72010-09-06 20:07:14 +010088 /* the evtchn fd for polling */
89 XenEvtchn xce_handle;
90 /* which vcpu we are serving */
91 int send_vcpu;
92
Anthony PERARD29321332010-09-06 20:07:33 +010093 struct xs_handle *xenstore;
Avi Kivity20581d22011-12-19 12:07:50 +020094 MemoryListener memory_listener;
Anthony PERARDb4dd7802011-05-24 14:34:21 +010095 QLIST_HEAD(, XenPhysmap) physmap;
Avi Kivitya8170e52012-10-23 12:30:10 +020096 hwaddr free_phys_offset;
Anthony PERARDb4dd7802011-05-24 14:34:21 +010097 const XenPhysmap *log_for_dirtybit;
Anthony PERARD29321332010-09-06 20:07:33 +010098
Arun Sharma9ce94e72010-09-06 20:07:14 +010099 Notifier exit;
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100100 Notifier suspend;
Liu, Jinsong11addd02013-09-25 16:40:23 +0000101 Notifier wakeup;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100102} XenIOState;
103
Anthony PERARD41445302010-07-16 14:55:39 +0100104/* Xen specific function for piix pci */
105
106int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
107{
108 return irq_num + ((pci_dev->devfn >> 3) << 2);
109}
110
111void xen_piix3_set_irq(void *opaque, int irq_num, int level)
112{
113 xc_hvm_set_pci_intx_level(xen_xc, xen_domid, 0, 0, irq_num >> 2,
114 irq_num & 3, level);
115}
116
117void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
118{
119 int i;
120
121 /* Scan for updates to PCI link routes (0x60-0x63). */
122 for (i = 0; i < len; i++) {
123 uint8_t v = (val >> (8 * i)) & 0xff;
124 if (v & 0x80) {
125 v = 0;
126 }
127 v &= 0xf;
128 if (((address + i) >= 0x60) && ((address + i) <= 0x63)) {
129 xc_hvm_set_pci_link_route(xen_xc, xen_domid, address + i - 0x60, v);
130 }
131 }
132}
133
Wei Liuf1dbf012012-04-12 10:01:43 +0000134void xen_hvm_inject_msi(uint64_t addr, uint32_t data)
135{
Stefano Stabellini4c9f8d12012-04-17 16:56:51 +0000136 xen_xc_hvm_inject_msi(xen_xc, xen_domid, addr, data);
Wei Liuf1dbf012012-04-12 10:01:43 +0000137}
138
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100139static void xen_suspend_notifier(Notifier *notifier, void *data)
Anthony PERARDc9622472010-10-05 16:40:22 +0100140{
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +0100141 xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
Anthony PERARDc9622472010-10-05 16:40:22 +0100142}
143
Anthony PERARD9c11a8a2010-06-30 17:50:10 +0100144/* Xen Interrupt Controller */
145
146static void xen_set_irq(void *opaque, int irq, int level)
147{
148 xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level);
149}
150
151qemu_irq *xen_interrupt_controller_init(void)
152{
153 return qemu_allocate_irqs(xen_set_irq, NULL, 16);
154}
155
Jun Nakajima432d2682010-08-31 16:41:25 +0100156/* Memory Ops */
157
Anthony PERARD04d7bad2013-09-09 16:15:52 +0000158static void xen_ram_init(ram_addr_t ram_size, MemoryRegion **ram_memory_p)
Jun Nakajima432d2682010-08-31 16:41:25 +0100159{
Avi Kivityce76b8a2011-12-18 16:27:48 +0200160 MemoryRegion *sysmem = get_system_memory();
Jun Nakajima432d2682010-08-31 16:41:25 +0100161 ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
Avi Kivityce76b8a2011-12-18 16:27:48 +0200162 ram_addr_t block_len;
Jun Nakajima432d2682010-08-31 16:41:25 +0100163
Avi Kivityce76b8a2011-12-18 16:27:48 +0200164 block_len = ram_size;
Stefano Stabellinifc744bb2013-06-25 11:43:04 +0000165 if (ram_size >= HVM_BELOW_4G_RAM_END) {
Anthony PERARD8a369e22011-07-20 08:17:43 +0000166 /* Xen does not allocate the memory continuously, and keep a hole at
Stefano Stabellinifc744bb2013-06-25 11:43:04 +0000167 * HVM_BELOW_4G_MMIO_START of HVM_BELOW_4G_MMIO_LENGTH
Anthony PERARD8a369e22011-07-20 08:17:43 +0000168 */
Stefano Stabellinifc744bb2013-06-25 11:43:04 +0000169 block_len += HVM_BELOW_4G_MMIO_LENGTH;
Anthony PERARD8a369e22011-07-20 08:17:43 +0000170 }
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -0400171 memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len);
Anthony PERARD04d7bad2013-09-09 16:15:52 +0000172 *ram_memory_p = &ram_memory;
Avi Kivityc5705a72011-12-20 15:59:12 +0200173 vmstate_register_ram_global(&ram_memory);
Jun Nakajima432d2682010-08-31 16:41:25 +0100174
Stefano Stabellinifc744bb2013-06-25 11:43:04 +0000175 if (ram_size >= HVM_BELOW_4G_RAM_END) {
176 above_4g_mem_size = ram_size - HVM_BELOW_4G_RAM_END;
177 below_4g_mem_size = HVM_BELOW_4G_RAM_END;
Jun Nakajima432d2682010-08-31 16:41:25 +0100178 } else {
179 below_4g_mem_size = ram_size;
180 }
181
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -0400182 memory_region_init_alias(&ram_640k, NULL, "xen.ram.640k",
Avi Kivityce76b8a2011-12-18 16:27:48 +0200183 &ram_memory, 0, 0xa0000);
184 memory_region_add_subregion(sysmem, 0, &ram_640k);
Anthony PERARD8a369e22011-07-20 08:17:43 +0000185 /* Skip of the VGA IO memory space, it will be registered later by the VGA
186 * emulated device.
187 *
188 * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load
189 * the Options ROM, so it is registered here as RAM.
190 */
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -0400191 memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo",
Avi Kivityce76b8a2011-12-18 16:27:48 +0200192 &ram_memory, 0xc0000, below_4g_mem_size - 0xc0000);
193 memory_region_add_subregion(sysmem, 0xc0000, &ram_lo);
Jun Nakajima432d2682010-08-31 16:41:25 +0100194 if (above_4g_mem_size > 0) {
Paolo Bonzini2c9b15c2013-06-06 05:41:28 -0400195 memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi",
Avi Kivityce76b8a2011-12-18 16:27:48 +0200196 &ram_memory, 0x100000000ULL,
197 above_4g_mem_size);
198 memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi);
Jun Nakajima432d2682010-08-31 16:41:25 +0100199 }
Jun Nakajima432d2682010-08-31 16:41:25 +0100200}
201
Avi Kivityfce537d2011-12-18 15:48:55 +0200202void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr)
Jun Nakajima432d2682010-08-31 16:41:25 +0100203{
204 unsigned long nr_pfn;
205 xen_pfn_t *pfn_list;
206 int i;
207
Anthony PERARDc2345722012-01-25 12:36:06 +0000208 if (runstate_check(RUN_STATE_INMIGRATE)) {
209 /* RAM already populated in Xen */
210 fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT
211 " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n",
212 __func__, size, ram_addr);
213 return;
214 }
215
Avi Kivityce76b8a2011-12-18 16:27:48 +0200216 if (mr == &ram_memory) {
217 return;
218 }
219
Jun Nakajima432d2682010-08-31 16:41:25 +0100220 trace_xen_ram_alloc(ram_addr, size);
221
222 nr_pfn = size >> TARGET_PAGE_BITS;
Anthony Liguori7267c092011-08-20 22:09:37 -0500223 pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
Jun Nakajima432d2682010-08-31 16:41:25 +0100224
225 for (i = 0; i < nr_pfn; i++) {
226 pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
227 }
228
229 if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0, pfn_list)) {
Anthony PERARDf15fbc42011-07-20 08:17:42 +0000230 hw_error("xen: failed to populate ram at " RAM_ADDR_FMT, ram_addr);
Jun Nakajima432d2682010-08-31 16:41:25 +0100231 }
232
Anthony Liguori7267c092011-08-20 22:09:37 -0500233 g_free(pfn_list);
Jun Nakajima432d2682010-08-31 16:41:25 +0100234}
235
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100236static XenPhysmap *get_physmapping(XenIOState *state,
Avi Kivitya8170e52012-10-23 12:30:10 +0200237 hwaddr start_addr, ram_addr_t size)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100238{
239 XenPhysmap *physmap = NULL;
240
241 start_addr &= TARGET_PAGE_MASK;
242
243 QLIST_FOREACH(physmap, &state->physmap, list) {
244 if (range_covers_byte(physmap->start_addr, physmap->size, start_addr)) {
245 return physmap;
246 }
247 }
248 return NULL;
249}
250
Avi Kivitya8170e52012-10-23 12:30:10 +0200251static hwaddr xen_phys_offset_to_gaddr(hwaddr start_addr,
Anthony PERARDcd1ba7d2012-01-18 12:21:38 +0000252 ram_addr_t size, void *opaque)
253{
Avi Kivitya8170e52012-10-23 12:30:10 +0200254 hwaddr addr = start_addr & TARGET_PAGE_MASK;
Anthony PERARDcd1ba7d2012-01-18 12:21:38 +0000255 XenIOState *xen_io_state = opaque;
256 XenPhysmap *physmap = NULL;
257
258 QLIST_FOREACH(physmap, &xen_io_state->physmap, list) {
259 if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) {
260 return physmap->start_addr;
261 }
262 }
263
264 return start_addr;
265}
266
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100267#if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 340
268static int xen_add_to_physmap(XenIOState *state,
Avi Kivitya8170e52012-10-23 12:30:10 +0200269 hwaddr start_addr,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100270 ram_addr_t size,
Avi Kivity20581d22011-12-19 12:07:50 +0200271 MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +0200272 hwaddr offset_within_region)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100273{
274 unsigned long i = 0;
275 int rc = 0;
276 XenPhysmap *physmap = NULL;
Avi Kivitya8170e52012-10-23 12:30:10 +0200277 hwaddr pfn, start_gpfn;
278 hwaddr phys_offset = memory_region_get_ram_addr(mr);
Stefano Stabellinid1814e02012-01-19 15:56:11 +0000279 char path[80], value[17];
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100280
281 if (get_physmapping(state, start_addr, size)) {
282 return 0;
283 }
284 if (size <= 0) {
285 return -1;
286 }
287
Stefano Stabelliniebed8502011-06-15 17:29:27 +0100288 /* Xen can only handle a single dirty log region for now and we want
289 * the linear framebuffer to be that region.
290 * Avoid tracking any regions that is not videoram and avoid tracking
291 * the legacy vga region. */
Avi Kivity20581d22011-12-19 12:07:50 +0200292 if (mr == framebuffer && start_addr > 0xbffff) {
293 goto go_physmap;
Stefano Stabelliniebed8502011-06-15 17:29:27 +0100294 }
295 return -1;
296
297go_physmap:
Sander Eikelenboomf1b8caf2012-12-17 11:37:43 +0000298 DPRINTF("mapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx"\n",
299 start_addr, start_addr + size);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100300
301 pfn = phys_offset >> TARGET_PAGE_BITS;
302 start_gpfn = start_addr >> TARGET_PAGE_BITS;
303 for (i = 0; i < size >> TARGET_PAGE_BITS; i++) {
304 unsigned long idx = pfn + i;
305 xen_pfn_t gpfn = start_gpfn + i;
306
307 rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn);
308 if (rc) {
309 DPRINTF("add_to_physmap MFN %"PRI_xen_pfn" to PFN %"
310 PRI_xen_pfn" failed: %d\n", idx, gpfn, rc);
311 return -rc;
312 }
313 }
314
Anthony Liguori7267c092011-08-20 22:09:37 -0500315 physmap = g_malloc(sizeof (XenPhysmap));
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100316
317 physmap->start_addr = start_addr;
318 physmap->size = size;
Stefano Stabellinid1814e02012-01-19 15:56:11 +0000319 physmap->name = (char *)mr->name;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100320 physmap->phys_offset = phys_offset;
321
322 QLIST_INSERT_HEAD(&state->physmap, physmap, list);
323
324 xc_domain_pin_memory_cacheattr(xen_xc, xen_domid,
325 start_addr >> TARGET_PAGE_BITS,
326 (start_addr + size) >> TARGET_PAGE_BITS,
327 XEN_DOMCTL_MEM_CACHEATTR_WB);
Stefano Stabellinid1814e02012-01-19 15:56:11 +0000328
329 snprintf(path, sizeof(path),
330 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr",
331 xen_domid, (uint64_t)phys_offset);
332 snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)start_addr);
333 if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
334 return -1;
335 }
336 snprintf(path, sizeof(path),
337 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/size",
338 xen_domid, (uint64_t)phys_offset);
339 snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)size);
340 if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
341 return -1;
342 }
343 if (mr->name) {
344 snprintf(path, sizeof(path),
345 "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name",
346 xen_domid, (uint64_t)phys_offset);
347 if (!xs_write(state->xenstore, 0, path, mr->name, strlen(mr->name))) {
348 return -1;
349 }
350 }
351
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100352 return 0;
353}
354
355static int xen_remove_from_physmap(XenIOState *state,
Avi Kivitya8170e52012-10-23 12:30:10 +0200356 hwaddr start_addr,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100357 ram_addr_t size)
358{
359 unsigned long i = 0;
360 int rc = 0;
361 XenPhysmap *physmap = NULL;
Avi Kivitya8170e52012-10-23 12:30:10 +0200362 hwaddr phys_offset = 0;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100363
364 physmap = get_physmapping(state, start_addr, size);
365 if (physmap == NULL) {
366 return -1;
367 }
368
369 phys_offset = physmap->phys_offset;
370 size = physmap->size;
371
Sander Eikelenboomf1b8caf2012-12-17 11:37:43 +0000372 DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", from ",
373 "%"HWADDR_PRIx"\n", phys_offset, phys_offset + size, start_addr);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100374
375 size >>= TARGET_PAGE_BITS;
376 start_addr >>= TARGET_PAGE_BITS;
377 phys_offset >>= TARGET_PAGE_BITS;
378 for (i = 0; i < size; i++) {
379 unsigned long idx = start_addr + i;
380 xen_pfn_t gpfn = phys_offset + i;
381
382 rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn);
383 if (rc) {
384 fprintf(stderr, "add_to_physmap MFN %"PRI_xen_pfn" to PFN %"
385 PRI_xen_pfn" failed: %d\n", idx, gpfn, rc);
386 return -rc;
387 }
388 }
389
390 QLIST_REMOVE(physmap, list);
391 if (state->log_for_dirtybit == physmap) {
392 state->log_for_dirtybit = NULL;
393 }
Stefan Weilc5633d92013-06-10 22:36:22 +0200394 g_free(physmap);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100395
396 return 0;
397}
398
399#else
400static int xen_add_to_physmap(XenIOState *state,
Avi Kivitya8170e52012-10-23 12:30:10 +0200401 hwaddr start_addr,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100402 ram_addr_t size,
Avi Kivity20581d22011-12-19 12:07:50 +0200403 MemoryRegion *mr,
Avi Kivitya8170e52012-10-23 12:30:10 +0200404 hwaddr offset_within_region)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100405{
406 return -ENOSYS;
407}
408
409static int xen_remove_from_physmap(XenIOState *state,
Avi Kivitya8170e52012-10-23 12:30:10 +0200410 hwaddr start_addr,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100411 ram_addr_t size)
412{
413 return -ENOSYS;
414}
415#endif
416
Avi Kivity20581d22011-12-19 12:07:50 +0200417static void xen_set_memory(struct MemoryListener *listener,
418 MemoryRegionSection *section,
419 bool add)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100420{
Avi Kivity20581d22011-12-19 12:07:50 +0200421 XenIOState *state = container_of(listener, XenIOState, memory_listener);
Avi Kivitya8170e52012-10-23 12:30:10 +0200422 hwaddr start_addr = section->offset_within_address_space;
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200423 ram_addr_t size = int128_get64(section->size);
Avi Kivity20581d22011-12-19 12:07:50 +0200424 bool log_dirty = memory_region_is_logging(section->mr);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100425 hvmmem_type_t mem_type;
426
Avi Kivity20581d22011-12-19 12:07:50 +0200427 if (!memory_region_is_ram(section->mr)) {
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100428 return;
429 }
430
Avi Kivity20581d22011-12-19 12:07:50 +0200431 if (!(section->mr != &ram_memory
432 && ( (log_dirty && add) || (!log_dirty && !add)))) {
433 return;
434 }
435
436 trace_xen_client_set_memory(start_addr, size, log_dirty);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100437
438 start_addr &= TARGET_PAGE_MASK;
439 size = TARGET_PAGE_ALIGN(size);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100440
Avi Kivity20581d22011-12-19 12:07:50 +0200441 if (add) {
442 if (!memory_region_is_rom(section->mr)) {
443 xen_add_to_physmap(state, start_addr, size,
444 section->mr, section->offset_within_region);
445 } else {
446 mem_type = HVMMEM_ram_ro;
447 if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type,
448 start_addr >> TARGET_PAGE_BITS,
449 size >> TARGET_PAGE_BITS)) {
450 DPRINTF("xc_hvm_set_mem_type error, addr: "TARGET_FMT_plx"\n",
451 start_addr);
452 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100453 }
Avi Kivity20581d22011-12-19 12:07:50 +0200454 } else {
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100455 if (xen_remove_from_physmap(state, start_addr, size) < 0) {
456 DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n", start_addr);
457 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100458 }
459}
460
Avi Kivity20581d22011-12-19 12:07:50 +0200461static void xen_region_add(MemoryListener *listener,
462 MemoryRegionSection *section)
463{
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200464 memory_region_ref(section->mr);
Avi Kivity20581d22011-12-19 12:07:50 +0200465 xen_set_memory(listener, section, true);
466}
467
468static void xen_region_del(MemoryListener *listener,
469 MemoryRegionSection *section)
470{
471 xen_set_memory(listener, section, false);
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200472 memory_region_unref(section->mr);
Avi Kivity20581d22011-12-19 12:07:50 +0200473}
474
Anthony PERARDb18620c2012-01-05 12:47:08 +0000475static void xen_sync_dirty_bitmap(XenIOState *state,
Avi Kivitya8170e52012-10-23 12:30:10 +0200476 hwaddr start_addr,
Anthony PERARDb18620c2012-01-05 12:47:08 +0000477 ram_addr_t size)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100478{
Avi Kivitya8170e52012-10-23 12:30:10 +0200479 hwaddr npages = size >> TARGET_PAGE_BITS;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100480 const int width = sizeof(unsigned long) * 8;
481 unsigned long bitmap[(npages + width - 1) / width];
482 int rc, i, j;
483 const XenPhysmap *physmap = NULL;
484
485 physmap = get_physmapping(state, start_addr, size);
486 if (physmap == NULL) {
487 /* not handled */
Anthony PERARDb18620c2012-01-05 12:47:08 +0000488 return;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100489 }
490
491 if (state->log_for_dirtybit == NULL) {
492 state->log_for_dirtybit = physmap;
493 } else if (state->log_for_dirtybit != physmap) {
Anthony PERARDb18620c2012-01-05 12:47:08 +0000494 /* Only one range for dirty bitmap can be tracked. */
495 return;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100496 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100497
498 rc = xc_hvm_track_dirty_vram(xen_xc, xen_domid,
499 start_addr >> TARGET_PAGE_BITS, npages,
500 bitmap);
Anthony PERARDb18620c2012-01-05 12:47:08 +0000501 if (rc < 0) {
502 if (rc != -ENODATA) {
Anthony PERARD8aba7dc2012-10-03 13:49:40 +0000503 memory_region_set_dirty(framebuffer, 0, size);
504 DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
Anthony PERARDb18620c2012-01-05 12:47:08 +0000505 ", 0x" TARGET_FMT_plx "): %s\n",
506 start_addr, start_addr + size, strerror(-rc));
507 }
508 return;
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100509 }
510
511 for (i = 0; i < ARRAY_SIZE(bitmap); i++) {
512 unsigned long map = bitmap[i];
513 while (map != 0) {
514 j = ffsl(map) - 1;
515 map &= ~(1ul << j);
Avi Kivity5a970652011-12-21 14:21:27 +0200516 memory_region_set_dirty(framebuffer,
Blue Swirlfd4aa972011-10-16 16:04:59 +0000517 (i * width + j) * TARGET_PAGE_SIZE,
518 TARGET_PAGE_SIZE);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100519 };
520 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100521}
522
Avi Kivity20581d22011-12-19 12:07:50 +0200523static void xen_log_start(MemoryListener *listener,
524 MemoryRegionSection *section)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100525{
Avi Kivity20581d22011-12-19 12:07:50 +0200526 XenIOState *state = container_of(listener, XenIOState, memory_listener);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100527
Anthony PERARDb18620c2012-01-05 12:47:08 +0000528 xen_sync_dirty_bitmap(state, section->offset_within_address_space,
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200529 int128_get64(section->size));
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100530}
531
Avi Kivity20581d22011-12-19 12:07:50 +0200532static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100533{
Avi Kivity20581d22011-12-19 12:07:50 +0200534 XenIOState *state = container_of(listener, XenIOState, memory_listener);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100535
536 state->log_for_dirtybit = NULL;
537 /* Disable dirty bit tracking */
Anthony PERARDb18620c2012-01-05 12:47:08 +0000538 xc_hvm_track_dirty_vram(xen_xc, xen_domid, 0, 0, NULL);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100539}
540
Avi Kivity20581d22011-12-19 12:07:50 +0200541static void xen_log_sync(MemoryListener *listener, MemoryRegionSection *section)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100542{
Avi Kivity20581d22011-12-19 12:07:50 +0200543 XenIOState *state = container_of(listener, XenIOState, memory_listener);
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100544
Anthony PERARDb18620c2012-01-05 12:47:08 +0000545 xen_sync_dirty_bitmap(state, section->offset_within_address_space,
Paolo Bonzini052e87b2013-05-27 10:08:27 +0200546 int128_get64(section->size));
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100547}
548
Avi Kivity20581d22011-12-19 12:07:50 +0200549static void xen_log_global_start(MemoryListener *listener)
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100550{
Anthony PERARD39f42432012-10-03 13:48:19 +0000551 if (xen_enabled()) {
552 xen_in_migration = true;
553 }
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100554}
555
Avi Kivity20581d22011-12-19 12:07:50 +0200556static void xen_log_global_stop(MemoryListener *listener)
557{
Anthony PERARD39f42432012-10-03 13:48:19 +0000558 xen_in_migration = false;
Avi Kivity20581d22011-12-19 12:07:50 +0200559}
560
561static MemoryListener xen_memory_listener = {
562 .region_add = xen_region_add,
563 .region_del = xen_region_del,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100564 .log_start = xen_log_start,
565 .log_stop = xen_log_stop,
Avi Kivity20581d22011-12-19 12:07:50 +0200566 .log_sync = xen_log_sync,
567 .log_global_start = xen_log_global_start,
568 .log_global_stop = xen_log_global_stop,
Avi Kivity72e22d22012-02-08 15:05:50 +0200569 .priority = 10,
Anthony PERARDb4dd7802011-05-24 14:34:21 +0100570};
Jun Nakajima432d2682010-08-31 16:41:25 +0100571
Anthony PERARD39f42432012-10-03 13:48:19 +0000572void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
573{
574 if (enable) {
575 memory_global_dirty_log_start();
576 } else {
577 memory_global_dirty_log_stop();
578 }
579}
580
Arun Sharma9ce94e72010-09-06 20:07:14 +0100581/* get the ioreq packets from share mem */
582static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu)
583{
584 ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu);
585
586 if (req->state != STATE_IOREQ_READY) {
587 DPRINTF("I/O request not ready: "
588 "%x, ptr: %x, port: %"PRIx64", "
589 "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n",
590 req->state, req->data_is_ptr, req->addr,
591 req->data, req->count, req->size);
592 return NULL;
593 }
594
595 xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
596
597 req->state = STATE_IOREQ_INPROCESS;
598 return req;
599}
600
601/* use poll to get the port notification */
602/* ioreq_vec--out,the */
603/* retval--the number of ioreq packet */
604static ioreq_t *cpu_get_ioreq(XenIOState *state)
605{
606 int i;
607 evtchn_port_t port;
608
609 port = xc_evtchn_pending(state->xce_handle);
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000610 if (port == state->bufioreq_local_port) {
Alex Blighbc72ad62013-08-21 16:03:08 +0100611 timer_mod(state->buffered_io_timer,
612 BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000613 return NULL;
614 }
615
Arun Sharma9ce94e72010-09-06 20:07:14 +0100616 if (port != -1) {
617 for (i = 0; i < smp_cpus; i++) {
618 if (state->ioreq_local_port[i] == port) {
619 break;
620 }
621 }
622
623 if (i == smp_cpus) {
624 hw_error("Fatal error while trying to get io event!\n");
625 }
626
627 /* unmask the wanted port again */
628 xc_evtchn_unmask(state->xce_handle, port);
629
630 /* get the io packet from shared memory */
631 state->send_vcpu = i;
632 return cpu_get_ioreq_from_shared_memory(state, i);
633 }
634
635 /* read error or read nothing */
636 return NULL;
637}
638
639static uint32_t do_inp(pio_addr_t addr, unsigned long size)
640{
641 switch (size) {
642 case 1:
643 return cpu_inb(addr);
644 case 2:
645 return cpu_inw(addr);
646 case 4:
647 return cpu_inl(addr);
648 default:
649 hw_error("inp: bad size: %04"FMT_pioaddr" %lx", addr, size);
650 }
651}
652
653static void do_outp(pio_addr_t addr,
654 unsigned long size, uint32_t val)
655{
656 switch (size) {
657 case 1:
658 return cpu_outb(addr, val);
659 case 2:
660 return cpu_outw(addr, val);
661 case 4:
662 return cpu_outl(addr, val);
663 default:
664 hw_error("outp: bad size: %04"FMT_pioaddr" %lx", addr, size);
665 }
666}
667
Ian Jacksona3864822012-12-17 11:43:19 +0000668/*
669 * Helper functions which read/write an object from/to physical guest
670 * memory, as part of the implementation of an ioreq.
671 *
672 * Equivalent to
673 * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i,
674 * val, req->size, 0/1)
675 * except without the integer overflow problems.
676 */
677static void rw_phys_req_item(hwaddr addr,
678 ioreq_t *req, uint32_t i, void *val, int rw)
679{
680 /* Do everything unsigned so overflow just results in a truncated result
681 * and accesses to undesired parts of guest memory, which is up
682 * to the guest */
683 hwaddr offset = (hwaddr)req->size * i;
684 if (req->df) {
685 addr -= offset;
686 } else {
687 addr += offset;
688 }
689 cpu_physical_memory_rw(addr, val, req->size, rw);
690}
691
692static inline void read_phys_req_item(hwaddr addr,
693 ioreq_t *req, uint32_t i, void *val)
694{
695 rw_phys_req_item(addr, req, i, val, 0);
696}
697static inline void write_phys_req_item(hwaddr addr,
698 ioreq_t *req, uint32_t i, void *val)
699{
700 rw_phys_req_item(addr, req, i, val, 1);
701}
702
703
Arun Sharma9ce94e72010-09-06 20:07:14 +0100704static void cpu_ioreq_pio(ioreq_t *req)
705{
Ian Jackson249e7e02012-12-17 11:44:02 +0000706 uint32_t i;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100707
708 if (req->dir == IOREQ_READ) {
709 if (!req->data_is_ptr) {
710 req->data = do_inp(req->addr, req->size);
711 } else {
712 uint32_t tmp;
713
714 for (i = 0; i < req->count; i++) {
715 tmp = do_inp(req->addr, req->size);
Ian Jacksona3864822012-12-17 11:43:19 +0000716 write_phys_req_item(req->data, req, i, &tmp);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100717 }
718 }
719 } else if (req->dir == IOREQ_WRITE) {
720 if (!req->data_is_ptr) {
721 do_outp(req->addr, req->size, req->data);
722 } else {
723 for (i = 0; i < req->count; i++) {
724 uint32_t tmp = 0;
725
Ian Jacksona3864822012-12-17 11:43:19 +0000726 read_phys_req_item(req->data, req, i, &tmp);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100727 do_outp(req->addr, req->size, tmp);
728 }
729 }
730 }
731}
732
733static void cpu_ioreq_move(ioreq_t *req)
734{
Ian Jackson249e7e02012-12-17 11:44:02 +0000735 uint32_t i;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100736
737 if (!req->data_is_ptr) {
738 if (req->dir == IOREQ_READ) {
739 for (i = 0; i < req->count; i++) {
Ian Jacksona3864822012-12-17 11:43:19 +0000740 read_phys_req_item(req->addr, req, i, &req->data);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100741 }
742 } else if (req->dir == IOREQ_WRITE) {
743 for (i = 0; i < req->count; i++) {
Ian Jacksona3864822012-12-17 11:43:19 +0000744 write_phys_req_item(req->addr, req, i, &req->data);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100745 }
746 }
747 } else {
Stefano Stabellini2b734342011-05-20 16:57:24 +0000748 uint64_t tmp;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100749
750 if (req->dir == IOREQ_READ) {
751 for (i = 0; i < req->count; i++) {
Ian Jacksona3864822012-12-17 11:43:19 +0000752 read_phys_req_item(req->addr, req, i, &tmp);
753 write_phys_req_item(req->data, req, i, &tmp);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100754 }
755 } else if (req->dir == IOREQ_WRITE) {
756 for (i = 0; i < req->count; i++) {
Ian Jacksona3864822012-12-17 11:43:19 +0000757 read_phys_req_item(req->data, req, i, &tmp);
758 write_phys_req_item(req->addr, req, i, &tmp);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100759 }
760 }
761 }
762}
763
764static void handle_ioreq(ioreq_t *req)
765{
766 if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
767 (req->size < sizeof (target_ulong))) {
768 req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
769 }
770
771 switch (req->type) {
772 case IOREQ_TYPE_PIO:
773 cpu_ioreq_pio(req);
774 break;
775 case IOREQ_TYPE_COPY:
776 cpu_ioreq_move(req);
777 break;
778 case IOREQ_TYPE_TIMEOFFSET:
779 break;
780 case IOREQ_TYPE_INVALIDATE:
Jan Kiszkae41d7c62011-06-21 22:59:08 +0200781 xen_invalidate_map_cache();
Arun Sharma9ce94e72010-09-06 20:07:14 +0100782 break;
783 default:
784 hw_error("Invalid ioreq type 0x%x\n", req->type);
785 }
786}
787
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000788static int handle_buffered_iopage(XenIOState *state)
Arun Sharma9ce94e72010-09-06 20:07:14 +0100789{
790 buf_ioreq_t *buf_req = NULL;
791 ioreq_t req;
792 int qw;
793
794 if (!state->buffered_io_page) {
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000795 return 0;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100796 }
797
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000798 memset(&req, 0x00, sizeof(req));
799
Arun Sharma9ce94e72010-09-06 20:07:14 +0100800 while (state->buffered_io_page->read_pointer != state->buffered_io_page->write_pointer) {
801 buf_req = &state->buffered_io_page->buf_ioreq[
802 state->buffered_io_page->read_pointer % IOREQ_BUFFER_SLOT_NUM];
803 req.size = 1UL << buf_req->size;
804 req.count = 1;
805 req.addr = buf_req->addr;
806 req.data = buf_req->data;
807 req.state = STATE_IOREQ_READY;
808 req.dir = buf_req->dir;
809 req.df = 1;
810 req.type = buf_req->type;
811 req.data_is_ptr = 0;
812 qw = (req.size == 8);
813 if (qw) {
814 buf_req = &state->buffered_io_page->buf_ioreq[
815 (state->buffered_io_page->read_pointer + 1) % IOREQ_BUFFER_SLOT_NUM];
816 req.data |= ((uint64_t)buf_req->data) << 32;
817 }
818
819 handle_ioreq(&req);
820
821 xen_mb();
822 state->buffered_io_page->read_pointer += qw ? 2 : 1;
823 }
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000824
825 return req.count;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100826}
827
828static void handle_buffered_io(void *opaque)
829{
830 XenIOState *state = opaque;
831
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000832 if (handle_buffered_iopage(state)) {
Alex Blighbc72ad62013-08-21 16:03:08 +0100833 timer_mod(state->buffered_io_timer,
834 BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000835 } else {
Alex Blighbc72ad62013-08-21 16:03:08 +0100836 timer_del(state->buffered_io_timer);
Stefano Stabellinifda1f762012-04-13 17:46:01 +0000837 xc_evtchn_unmask(state->xce_handle, state->bufioreq_local_port);
838 }
Arun Sharma9ce94e72010-09-06 20:07:14 +0100839}
840
841static void cpu_handle_ioreq(void *opaque)
842{
843 XenIOState *state = opaque;
844 ioreq_t *req = cpu_get_ioreq(state);
845
846 handle_buffered_iopage(state);
847 if (req) {
848 handle_ioreq(req);
849
850 if (req->state != STATE_IOREQ_INPROCESS) {
851 fprintf(stderr, "Badness in I/O request ... not in service?!: "
852 "%x, ptr: %x, port: %"PRIx64", "
853 "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n",
854 req->state, req->data_is_ptr, req->addr,
855 req->data, req->count, req->size);
John V. Baboval180640e2012-05-17 10:33:09 +0000856 destroy_hvm_domain(false);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100857 return;
858 }
859
860 xen_wmb(); /* Update ioreq contents /then/ update state. */
861
862 /*
863 * We do this before we send the response so that the tools
864 * have the opportunity to pick up on the reset before the
865 * guest resumes and does a hlt with interrupts disabled which
866 * causes Xen to powerdown the domain.
867 */
Luiz Capitulino13548692011-07-29 15:36:43 -0300868 if (runstate_is_running()) {
Arun Sharma9ce94e72010-09-06 20:07:14 +0100869 if (qemu_shutdown_requested_get()) {
John V. Baboval180640e2012-05-17 10:33:09 +0000870 destroy_hvm_domain(false);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100871 }
872 if (qemu_reset_requested_get()) {
Jan Kiszkae063eb12011-06-14 18:29:43 +0200873 qemu_system_reset(VMRESET_REPORT);
John V. Baboval180640e2012-05-17 10:33:09 +0000874 destroy_hvm_domain(true);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100875 }
876 }
877
878 req->state = STATE_IORESP_READY;
879 xc_evtchn_notify(state->xce_handle, state->ioreq_local_port[state->send_vcpu]);
880 }
881}
882
Stefano Stabellini0f517262011-06-30 18:26:29 +0100883static int store_dev_info(int domid, CharDriverState *cs, const char *string)
884{
885 struct xs_handle *xs = NULL;
886 char *path = NULL;
887 char *newpath = NULL;
888 char *pts = NULL;
889 int ret = -1;
890
891 /* Only continue if we're talking to a pty. */
892 if (strncmp(cs->filename, "pty:", 4)) {
893 return 0;
894 }
895 pts = cs->filename + 4;
896
897 /* We now have everything we need to set the xenstore entry. */
898 xs = xs_open(0);
899 if (xs == NULL) {
900 fprintf(stderr, "Could not contact XenStore\n");
901 goto out;
902 }
903
904 path = xs_get_domain_path(xs, domid);
905 if (path == NULL) {
906 fprintf(stderr, "xs_get_domain_path() error\n");
907 goto out;
908 }
909 newpath = realloc(path, (strlen(path) + strlen(string) +
910 strlen("/tty") + 1));
911 if (newpath == NULL) {
912 fprintf(stderr, "realloc error\n");
913 goto out;
914 }
915 path = newpath;
916
917 strcat(path, string);
918 strcat(path, "/tty");
919 if (!xs_write(xs, XBT_NULL, path, pts, strlen(pts))) {
920 fprintf(stderr, "xs_write for '%s' fail", string);
921 goto out;
922 }
923 ret = 0;
924
925out:
926 free(path);
927 xs_close(xs);
928
929 return ret;
930}
931
932void xenstore_store_pv_console_info(int i, CharDriverState *chr)
933{
934 if (i == 0) {
935 store_dev_info(xen_domid, chr, "/console");
936 } else {
937 char buf[32];
938 snprintf(buf, sizeof(buf), "/device/console/%d", i);
939 store_dev_info(xen_domid, chr, buf);
940 }
941}
942
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +0000943static void xenstore_record_dm_state(struct xs_handle *xs, const char *state)
Anthony PERARD29321332010-09-06 20:07:33 +0100944{
945 char path[50];
946
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +0000947 if (xs == NULL) {
948 fprintf(stderr, "xenstore connection not initialized\n");
949 exit(1);
950 }
951
Anthony PERARD29321332010-09-06 20:07:33 +0100952 snprintf(path, sizeof (path), "/local/domain/0/device-model/%u/state", xen_domid);
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +0000953 if (!xs_write(xs, XBT_NULL, path, state, strlen(state))) {
Anthony PERARD29321332010-09-06 20:07:33 +0100954 fprintf(stderr, "error recording dm state\n");
955 exit(1);
956 }
957}
958
Arun Sharma9ce94e72010-09-06 20:07:14 +0100959static void xen_main_loop_prepare(XenIOState *state)
960{
961 int evtchn_fd = -1;
962
963 if (state->xce_handle != XC_HANDLER_INITIAL_VALUE) {
964 evtchn_fd = xc_evtchn_fd(state->xce_handle);
965 }
966
Alex Blighbc72ad62013-08-21 16:03:08 +0100967 state->buffered_io_timer = timer_new_ms(QEMU_CLOCK_REALTIME, handle_buffered_io,
Arun Sharma9ce94e72010-09-06 20:07:14 +0100968 state);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100969
970 if (evtchn_fd != -1) {
971 qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
972 }
973}
974
975
Anthony PERARD3285cf42010-08-19 12:27:56 +0100976/* Initialise Xen */
977
Luiz Capitulino1dfb4dd2011-07-29 14:26:33 -0300978static void xen_change_state_handler(void *opaque, int running,
979 RunState state)
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +0000980{
981 if (running) {
982 /* record state running */
983 xenstore_record_dm_state(xenstore, "running");
984 }
985}
986
Luiz Capitulino1dfb4dd2011-07-29 14:26:33 -0300987static void xen_hvm_change_state_handler(void *opaque, int running,
988 RunState rstate)
Arun Sharma9ce94e72010-09-06 20:07:14 +0100989{
Luiz Capitulino1dfb4dd2011-07-29 14:26:33 -0300990 XenIOState *xstate = opaque;
Arun Sharma9ce94e72010-09-06 20:07:14 +0100991 if (running) {
Luiz Capitulino1dfb4dd2011-07-29 14:26:33 -0300992 xen_main_loop_prepare(xstate);
Arun Sharma9ce94e72010-09-06 20:07:14 +0100993 }
994}
995
Jan Kiszka9e8dd452011-06-20 14:06:26 +0200996static void xen_exit_notifier(Notifier *n, void *data)
Arun Sharma9ce94e72010-09-06 20:07:14 +0100997{
998 XenIOState *state = container_of(n, XenIOState, exit);
999
1000 xc_evtchn_close(state->xce_handle);
Anthony PERARD29321332010-09-06 20:07:33 +01001001 xs_daemon_close(state->xenstore);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001002}
1003
Anthony PERARD3285cf42010-08-19 12:27:56 +01001004int xen_init(void)
1005{
1006 xen_xc = xen_xc_interface_open(0, 0, 0);
1007 if (xen_xc == XC_HANDLER_INITIAL_VALUE) {
1008 xen_be_printf(NULL, 0, "can't open xen interface\n");
1009 return -1;
1010 }
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +00001011 qemu_add_vm_change_state_handler(xen_change_state_handler, NULL);
Anthony PERARD3285cf42010-08-19 12:27:56 +01001012
1013 return 0;
1014}
Anthony PERARD29d3ccd2010-06-30 12:58:34 +01001015
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001016static void xen_read_physmap(XenIOState *state)
1017{
1018 XenPhysmap *physmap = NULL;
1019 unsigned int len, num, i;
1020 char path[80], *value = NULL;
1021 char **entries = NULL;
1022
1023 snprintf(path, sizeof(path),
1024 "/local/domain/0/device-model/%d/physmap", xen_domid);
1025 entries = xs_directory(state->xenstore, 0, path, &num);
1026 if (entries == NULL)
1027 return;
1028
1029 for (i = 0; i < num; i++) {
1030 physmap = g_malloc(sizeof (XenPhysmap));
1031 physmap->phys_offset = strtoull(entries[i], NULL, 16);
1032 snprintf(path, sizeof(path),
1033 "/local/domain/0/device-model/%d/physmap/%s/start_addr",
1034 xen_domid, entries[i]);
1035 value = xs_read(state->xenstore, 0, path, &len);
1036 if (value == NULL) {
Stefan Weilc5633d92013-06-10 22:36:22 +02001037 g_free(physmap);
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001038 continue;
1039 }
1040 physmap->start_addr = strtoull(value, NULL, 16);
1041 free(value);
1042
1043 snprintf(path, sizeof(path),
1044 "/local/domain/0/device-model/%d/physmap/%s/size",
1045 xen_domid, entries[i]);
1046 value = xs_read(state->xenstore, 0, path, &len);
1047 if (value == NULL) {
Stefan Weilc5633d92013-06-10 22:36:22 +02001048 g_free(physmap);
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001049 continue;
1050 }
1051 physmap->size = strtoull(value, NULL, 16);
1052 free(value);
1053
1054 snprintf(path, sizeof(path),
1055 "/local/domain/0/device-model/%d/physmap/%s/name",
1056 xen_domid, entries[i]);
1057 physmap->name = xs_read(state->xenstore, 0, path, &len);
1058
1059 QLIST_INSERT_HEAD(&state->physmap, physmap, list);
1060 }
1061 free(entries);
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001062}
1063
Liu, Jinsong11addd02013-09-25 16:40:23 +00001064static void xen_wakeup_notifier(Notifier *notifier, void *data)
1065{
1066 xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
1067}
1068
Anthony PERARD04d7bad2013-09-09 16:15:52 +00001069int xen_hvm_init(MemoryRegion **ram_memory)
Anthony PERARD29d3ccd2010-06-30 12:58:34 +01001070{
Arun Sharma9ce94e72010-09-06 20:07:14 +01001071 int i, rc;
1072 unsigned long ioreq_pfn;
Stefano Stabellinifda1f762012-04-13 17:46:01 +00001073 unsigned long bufioreq_evtchn;
Arun Sharma9ce94e72010-09-06 20:07:14 +01001074 XenIOState *state;
1075
Anthony Liguori7267c092011-08-20 22:09:37 -05001076 state = g_malloc0(sizeof (XenIOState));
Arun Sharma9ce94e72010-09-06 20:07:14 +01001077
1078 state->xce_handle = xen_xc_evtchn_open(NULL, 0);
1079 if (state->xce_handle == XC_HANDLER_INITIAL_VALUE) {
1080 perror("xen: event channel open");
Stefan Weilc5633d92013-06-10 22:36:22 +02001081 g_free(state);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001082 return -errno;
1083 }
1084
Anthony PERARD29321332010-09-06 20:07:33 +01001085 state->xenstore = xs_daemon_open();
1086 if (state->xenstore == NULL) {
1087 perror("xen: xenstore open");
Stefan Weilc5633d92013-06-10 22:36:22 +02001088 g_free(state);
Anthony PERARD29321332010-09-06 20:07:33 +01001089 return -errno;
1090 }
1091
Arun Sharma9ce94e72010-09-06 20:07:14 +01001092 state->exit.notify = xen_exit_notifier;
1093 qemu_add_exit_notifier(&state->exit);
1094
Gerd Hoffmannda98c8e2012-02-23 13:45:20 +01001095 state->suspend.notify = xen_suspend_notifier;
1096 qemu_register_suspend_notifier(&state->suspend);
1097
Liu, Jinsong11addd02013-09-25 16:40:23 +00001098 state->wakeup.notify = xen_wakeup_notifier;
1099 qemu_register_wakeup_notifier(&state->wakeup);
1100
Arun Sharma9ce94e72010-09-06 20:07:14 +01001101 xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_IOREQ_PFN, &ioreq_pfn);
1102 DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
1103 state->shared_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE,
1104 PROT_READ|PROT_WRITE, ioreq_pfn);
1105 if (state->shared_page == NULL) {
1106 hw_error("map shared IO page returned error %d handle=" XC_INTERFACE_FMT,
1107 errno, xen_xc);
1108 }
1109
1110 xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_PFN, &ioreq_pfn);
1111 DPRINTF("buffered io page at pfn %lx\n", ioreq_pfn);
1112 state->buffered_io_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE,
1113 PROT_READ|PROT_WRITE, ioreq_pfn);
1114 if (state->buffered_io_page == NULL) {
1115 hw_error("map buffered IO page returned error %d", errno);
1116 }
1117
Anthony Liguori7267c092011-08-20 22:09:37 -05001118 state->ioreq_local_port = g_malloc0(smp_cpus * sizeof (evtchn_port_t));
Arun Sharma9ce94e72010-09-06 20:07:14 +01001119
1120 /* FIXME: how about if we overflow the page here? */
1121 for (i = 0; i < smp_cpus; i++) {
1122 rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid,
1123 xen_vcpu_eport(state->shared_page, i));
1124 if (rc == -1) {
1125 fprintf(stderr, "bind interdomain ioctl error %d\n", errno);
1126 return -1;
1127 }
1128 state->ioreq_local_port[i] = rc;
1129 }
1130
Stefano Stabellinifda1f762012-04-13 17:46:01 +00001131 rc = xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_EVTCHN,
1132 &bufioreq_evtchn);
1133 if (rc < 0) {
1134 fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
1135 return -1;
1136 }
1137 rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid,
1138 (uint32_t)bufioreq_evtchn);
1139 if (rc == -1) {
1140 fprintf(stderr, "bind interdomain ioctl error %d\n", errno);
1141 return -1;
1142 }
1143 state->bufioreq_local_port = rc;
1144
Jun Nakajima432d2682010-08-31 16:41:25 +01001145 /* Init RAM management */
Anthony PERARDcd1ba7d2012-01-18 12:21:38 +00001146 xen_map_cache_init(xen_phys_offset_to_gaddr, state);
Anthony PERARD04d7bad2013-09-09 16:15:52 +00001147 xen_ram_init(ram_size, ram_memory);
Jun Nakajima432d2682010-08-31 16:41:25 +01001148
Anthony PERARDfb4bb2b2011-07-15 00:33:42 +00001149 qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001150
Avi Kivity20581d22011-12-19 12:07:50 +02001151 state->memory_listener = xen_memory_listener;
Anthony PERARDb4dd7802011-05-24 14:34:21 +01001152 QLIST_INIT(&state->physmap);
Avi Kivityf6790af2012-10-02 20:13:51 +02001153 memory_listener_register(&state->memory_listener, &address_space_memory);
Anthony PERARDb4dd7802011-05-24 14:34:21 +01001154 state->log_for_dirtybit = NULL;
1155
Stefano Stabelliniad35a7d2011-06-24 15:54:48 +01001156 /* Initialize backend core & drivers */
1157 if (xen_be_init() != 0) {
1158 fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__);
1159 exit(1);
1160 }
1161 xen_be_register("console", &xen_console_ops);
Stefano Stabellini37cdfcf2011-06-24 17:36:11 +01001162 xen_be_register("vkbd", &xen_kbdmouse_ops);
Stefano Stabelliniad35a7d2011-06-24 15:54:48 +01001163 xen_be_register("qdisk", &xen_blkdev_ops);
Stefano Stabellinid1814e02012-01-19 15:56:11 +00001164 xen_read_physmap(state);
Stefano Stabelliniad35a7d2011-06-24 15:54:48 +01001165
Anthony PERARD29d3ccd2010-06-30 12:58:34 +01001166 return 0;
1167}
Arun Sharma9ce94e72010-09-06 20:07:14 +01001168
John V. Baboval180640e2012-05-17 10:33:09 +00001169void destroy_hvm_domain(bool reboot)
Arun Sharma9ce94e72010-09-06 20:07:14 +01001170{
1171 XenXC xc_handle;
1172 int sts;
1173
1174 xc_handle = xen_xc_interface_open(0, 0, 0);
1175 if (xc_handle == XC_HANDLER_INITIAL_VALUE) {
1176 fprintf(stderr, "Cannot acquire xenctrl handle\n");
1177 } else {
John V. Baboval180640e2012-05-17 10:33:09 +00001178 sts = xc_domain_shutdown(xc_handle, xen_domid,
1179 reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff);
Arun Sharma9ce94e72010-09-06 20:07:14 +01001180 if (sts != 0) {
John V. Baboval180640e2012-05-17 10:33:09 +00001181 fprintf(stderr, "xc_domain_shutdown failed to issue %s, "
1182 "sts %d, %s\n", reboot ? "reboot" : "poweroff",
1183 sts, strerror(errno));
Arun Sharma9ce94e72010-09-06 20:07:14 +01001184 } else {
John V. Baboval180640e2012-05-17 10:33:09 +00001185 fprintf(stderr, "Issued domain %d %s\n", xen_domid,
1186 reboot ? "reboot" : "poweroff");
Arun Sharma9ce94e72010-09-06 20:07:14 +01001187 }
1188 xc_interface_close(xc_handle);
1189 }
1190}
Avi Kivityc65adf92011-12-18 16:40:50 +02001191
1192void xen_register_framebuffer(MemoryRegion *mr)
1193{
1194 framebuffer = mr;
1195}
Allen Kayeaab4d62012-06-21 15:40:09 +00001196
1197void xen_shutdown_fatal_error(const char *fmt, ...)
1198{
1199 va_list ap;
1200
1201 va_start(ap, fmt);
1202 vfprintf(stderr, fmt, ap);
1203 va_end(ap);
1204 fprintf(stderr, "Will destroy the domain.\n");
1205 /* destroy the domain */
1206 qemu_system_shutdown_request();
1207}
Anthony PERARD910b38e2012-10-03 13:48:45 +00001208
1209void xen_modified_memory(ram_addr_t start, ram_addr_t length)
1210{
1211 if (unlikely(xen_in_migration)) {
1212 int rc;
1213 ram_addr_t start_pfn, nb_pages;
1214
1215 if (length == 0) {
1216 length = TARGET_PAGE_SIZE;
1217 }
1218 start_pfn = start >> TARGET_PAGE_BITS;
1219 nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >> TARGET_PAGE_BITS)
1220 - start_pfn;
1221 rc = xc_hvm_modified_memory(xen_xc, xen_domid, start_pfn, nb_pages);
1222 if (rc) {
1223 fprintf(stderr,
1224 "%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n",
1225 __func__, start, nb_pages, rc, strerror(-rc));
1226 }
1227 }
1228}