Anthony PERARD | 3285cf4 | 2010-08-19 12:27:56 +0100 | [diff] [blame] | 1 | /* |
| 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 Bonzini | 6b620ca | 2012-01-13 17:44:23 +0100 | [diff] [blame] | 7 | * 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 PERARD | 3285cf4 | 2010-08-19 12:27:56 +0100 | [diff] [blame] | 9 | */ |
| 10 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 11 | #include <sys/mman.h> |
| 12 | |
Michael S. Tsirkin | a2cb15b | 2012-12-12 14:24:50 +0200 | [diff] [blame] | 13 | #include "hw/pci/pci.h" |
Anthony PERARD | c962247 | 2010-10-05 16:40:22 +0100 | [diff] [blame] | 14 | #include "hw/pc.h" |
Anthony PERARD | 3285cf4 | 2010-08-19 12:27:56 +0100 | [diff] [blame] | 15 | #include "hw/xen_common.h" |
| 16 | #include "hw/xen_backend.h" |
Anthony PERARD | 39f4243 | 2012-10-03 13:48:19 +0000 | [diff] [blame] | 17 | #include "qmp-commands.h" |
Anthony PERARD | 3285cf4 | 2010-08-19 12:27:56 +0100 | [diff] [blame] | 18 | |
Paolo Bonzini | 4ad549e | 2012-12-20 12:29:20 +0100 | [diff] [blame] | 19 | #include "char/char.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 20 | #include "qemu/range.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 21 | #include "sysemu/xen-mapcache.h" |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 22 | #include "trace.h" |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 23 | #include "exec/address-spaces.h" |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 24 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 25 | #include <xen/hvm/ioreq.h> |
| 26 | #include <xen/hvm/params.h> |
Anthony PERARD | 8a369e2 | 2011-07-20 08:17:43 +0000 | [diff] [blame] | 27 | #include <xen/hvm/e820.h> |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 28 | |
| 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 Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 39 | static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi; |
Avi Kivity | c65adf9 | 2011-12-18 16:40:50 +0200 | [diff] [blame] | 40 | static MemoryRegion *framebuffer; |
Anthony PERARD | 39f4243 | 2012-10-03 13:48:19 +0000 | [diff] [blame] | 41 | static bool xen_in_migration; |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 42 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 43 | /* Compatibility with older version */ |
| 44 | #if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a |
| 45 | static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i) |
| 46 | { |
| 47 | return shared_page->vcpu_iodata[i].vp_eport; |
| 48 | } |
| 49 | static 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 |
| 55 | static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i) |
| 56 | { |
| 57 | return shared_page->vcpu_ioreq[i].vp_eport; |
| 58 | } |
| 59 | static 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 Stabellini | fda1f76 | 2012-04-13 17:46:01 +0000 | [diff] [blame] | 65 | #ifndef HVM_PARAM_BUFIOREQ_EVTCHN |
| 66 | #define HVM_PARAM_BUFIOREQ_EVTCHN 26 |
| 67 | #endif |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 68 | |
| 69 | #define BUFFER_IO_MAX_DELAY 100 |
| 70 | |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 71 | typedef struct XenPhysmap { |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 72 | hwaddr start_addr; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 73 | ram_addr_t size; |
Stefano Stabellini | d1814e0 | 2012-01-19 15:56:11 +0000 | [diff] [blame] | 74 | char *name; |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 75 | hwaddr phys_offset; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 76 | |
| 77 | QLIST_ENTRY(XenPhysmap) list; |
| 78 | } XenPhysmap; |
| 79 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 80 | typedef 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 Stabellini | fda1f76 | 2012-04-13 17:46:01 +0000 | [diff] [blame] | 86 | /* evtchn local port for buffered io */ |
| 87 | evtchn_port_t bufioreq_local_port; |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 88 | /* the evtchn fd for polling */ |
| 89 | XenEvtchn xce_handle; |
| 90 | /* which vcpu we are serving */ |
| 91 | int send_vcpu; |
| 92 | |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 93 | struct xs_handle *xenstore; |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 94 | MemoryListener memory_listener; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 95 | QLIST_HEAD(, XenPhysmap) physmap; |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 96 | hwaddr free_phys_offset; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 97 | const XenPhysmap *log_for_dirtybit; |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 98 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 99 | Notifier exit; |
Gerd Hoffmann | da98c8e | 2012-02-23 13:45:20 +0100 | [diff] [blame] | 100 | Notifier suspend; |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 101 | } XenIOState; |
| 102 | |
Anthony PERARD | 4144530 | 2010-07-16 14:55:39 +0100 | [diff] [blame] | 103 | /* Xen specific function for piix pci */ |
| 104 | |
| 105 | int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num) |
| 106 | { |
| 107 | return irq_num + ((pci_dev->devfn >> 3) << 2); |
| 108 | } |
| 109 | |
| 110 | void xen_piix3_set_irq(void *opaque, int irq_num, int level) |
| 111 | { |
| 112 | xc_hvm_set_pci_intx_level(xen_xc, xen_domid, 0, 0, irq_num >> 2, |
| 113 | irq_num & 3, level); |
| 114 | } |
| 115 | |
| 116 | void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len) |
| 117 | { |
| 118 | int i; |
| 119 | |
| 120 | /* Scan for updates to PCI link routes (0x60-0x63). */ |
| 121 | for (i = 0; i < len; i++) { |
| 122 | uint8_t v = (val >> (8 * i)) & 0xff; |
| 123 | if (v & 0x80) { |
| 124 | v = 0; |
| 125 | } |
| 126 | v &= 0xf; |
| 127 | if (((address + i) >= 0x60) && ((address + i) <= 0x63)) { |
| 128 | xc_hvm_set_pci_link_route(xen_xc, xen_domid, address + i - 0x60, v); |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | |
Wei Liu | f1dbf01 | 2012-04-12 10:01:43 +0000 | [diff] [blame] | 133 | void xen_hvm_inject_msi(uint64_t addr, uint32_t data) |
| 134 | { |
Stefano Stabellini | 4c9f8d1 | 2012-04-17 16:56:51 +0000 | [diff] [blame] | 135 | xen_xc_hvm_inject_msi(xen_xc, xen_domid, addr, data); |
Wei Liu | f1dbf01 | 2012-04-12 10:01:43 +0000 | [diff] [blame] | 136 | } |
| 137 | |
Gerd Hoffmann | da98c8e | 2012-02-23 13:45:20 +0100 | [diff] [blame] | 138 | static void xen_suspend_notifier(Notifier *notifier, void *data) |
Anthony PERARD | c962247 | 2010-10-05 16:40:22 +0100 | [diff] [blame] | 139 | { |
Gerd Hoffmann | da98c8e | 2012-02-23 13:45:20 +0100 | [diff] [blame] | 140 | xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3); |
Anthony PERARD | c962247 | 2010-10-05 16:40:22 +0100 | [diff] [blame] | 141 | } |
| 142 | |
Anthony PERARD | 9c11a8a | 2010-06-30 17:50:10 +0100 | [diff] [blame] | 143 | /* Xen Interrupt Controller */ |
| 144 | |
| 145 | static void xen_set_irq(void *opaque, int irq, int level) |
| 146 | { |
| 147 | xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level); |
| 148 | } |
| 149 | |
| 150 | qemu_irq *xen_interrupt_controller_init(void) |
| 151 | { |
| 152 | return qemu_allocate_irqs(xen_set_irq, NULL, 16); |
| 153 | } |
| 154 | |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 155 | /* Memory Ops */ |
| 156 | |
| 157 | static void xen_ram_init(ram_addr_t ram_size) |
| 158 | { |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 159 | MemoryRegion *sysmem = get_system_memory(); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 160 | ram_addr_t below_4g_mem_size, above_4g_mem_size = 0; |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 161 | ram_addr_t block_len; |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 162 | |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 163 | block_len = ram_size; |
Anthony PERARD | 8a369e2 | 2011-07-20 08:17:43 +0000 | [diff] [blame] | 164 | if (ram_size >= HVM_BELOW_4G_RAM_END) { |
| 165 | /* Xen does not allocate the memory continuously, and keep a hole at |
| 166 | * HVM_BELOW_4G_MMIO_START of HVM_BELOW_4G_MMIO_LENGTH |
| 167 | */ |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 168 | block_len += HVM_BELOW_4G_MMIO_LENGTH; |
Anthony PERARD | 8a369e2 | 2011-07-20 08:17:43 +0000 | [diff] [blame] | 169 | } |
Avi Kivity | c5705a7 | 2011-12-20 15:59:12 +0200 | [diff] [blame] | 170 | memory_region_init_ram(&ram_memory, "xen.ram", block_len); |
| 171 | vmstate_register_ram_global(&ram_memory); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 172 | |
Anthony PERARD | 8a369e2 | 2011-07-20 08:17:43 +0000 | [diff] [blame] | 173 | if (ram_size >= HVM_BELOW_4G_RAM_END) { |
| 174 | above_4g_mem_size = ram_size - HVM_BELOW_4G_RAM_END; |
| 175 | below_4g_mem_size = HVM_BELOW_4G_RAM_END; |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 176 | } else { |
| 177 | below_4g_mem_size = ram_size; |
| 178 | } |
| 179 | |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 180 | memory_region_init_alias(&ram_640k, "xen.ram.640k", |
| 181 | &ram_memory, 0, 0xa0000); |
| 182 | memory_region_add_subregion(sysmem, 0, &ram_640k); |
Anthony PERARD | 8a369e2 | 2011-07-20 08:17:43 +0000 | [diff] [blame] | 183 | /* Skip of the VGA IO memory space, it will be registered later by the VGA |
| 184 | * emulated device. |
| 185 | * |
| 186 | * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load |
| 187 | * the Options ROM, so it is registered here as RAM. |
| 188 | */ |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 189 | memory_region_init_alias(&ram_lo, "xen.ram.lo", |
| 190 | &ram_memory, 0xc0000, below_4g_mem_size - 0xc0000); |
| 191 | memory_region_add_subregion(sysmem, 0xc0000, &ram_lo); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 192 | if (above_4g_mem_size > 0) { |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 193 | memory_region_init_alias(&ram_hi, "xen.ram.hi", |
| 194 | &ram_memory, 0x100000000ULL, |
| 195 | above_4g_mem_size); |
| 196 | memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 197 | } |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 198 | } |
| 199 | |
Avi Kivity | fce537d | 2011-12-18 15:48:55 +0200 | [diff] [blame] | 200 | void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr) |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 201 | { |
| 202 | unsigned long nr_pfn; |
| 203 | xen_pfn_t *pfn_list; |
| 204 | int i; |
| 205 | |
Anthony PERARD | c234572 | 2012-01-25 12:36:06 +0000 | [diff] [blame] | 206 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 207 | /* RAM already populated in Xen */ |
| 208 | fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT |
| 209 | " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n", |
| 210 | __func__, size, ram_addr); |
| 211 | return; |
| 212 | } |
| 213 | |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 214 | if (mr == &ram_memory) { |
| 215 | return; |
| 216 | } |
| 217 | |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 218 | trace_xen_ram_alloc(ram_addr, size); |
| 219 | |
| 220 | nr_pfn = size >> TARGET_PAGE_BITS; |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 221 | pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 222 | |
| 223 | for (i = 0; i < nr_pfn; i++) { |
| 224 | pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i; |
| 225 | } |
| 226 | |
| 227 | if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0, pfn_list)) { |
Anthony PERARD | f15fbc4 | 2011-07-20 08:17:42 +0000 | [diff] [blame] | 228 | hw_error("xen: failed to populate ram at " RAM_ADDR_FMT, ram_addr); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 229 | } |
| 230 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 231 | g_free(pfn_list); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 232 | } |
| 233 | |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 234 | static XenPhysmap *get_physmapping(XenIOState *state, |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 235 | hwaddr start_addr, ram_addr_t size) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 236 | { |
| 237 | XenPhysmap *physmap = NULL; |
| 238 | |
| 239 | start_addr &= TARGET_PAGE_MASK; |
| 240 | |
| 241 | QLIST_FOREACH(physmap, &state->physmap, list) { |
| 242 | if (range_covers_byte(physmap->start_addr, physmap->size, start_addr)) { |
| 243 | return physmap; |
| 244 | } |
| 245 | } |
| 246 | return NULL; |
| 247 | } |
| 248 | |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 249 | static hwaddr xen_phys_offset_to_gaddr(hwaddr start_addr, |
Anthony PERARD | cd1ba7d | 2012-01-18 12:21:38 +0000 | [diff] [blame] | 250 | ram_addr_t size, void *opaque) |
| 251 | { |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 252 | hwaddr addr = start_addr & TARGET_PAGE_MASK; |
Anthony PERARD | cd1ba7d | 2012-01-18 12:21:38 +0000 | [diff] [blame] | 253 | XenIOState *xen_io_state = opaque; |
| 254 | XenPhysmap *physmap = NULL; |
| 255 | |
| 256 | QLIST_FOREACH(physmap, &xen_io_state->physmap, list) { |
| 257 | if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) { |
| 258 | return physmap->start_addr; |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | return start_addr; |
| 263 | } |
| 264 | |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 265 | #if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 340 |
| 266 | static int xen_add_to_physmap(XenIOState *state, |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 267 | hwaddr start_addr, |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 268 | ram_addr_t size, |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 269 | MemoryRegion *mr, |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 270 | hwaddr offset_within_region) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 271 | { |
| 272 | unsigned long i = 0; |
| 273 | int rc = 0; |
| 274 | XenPhysmap *physmap = NULL; |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 275 | hwaddr pfn, start_gpfn; |
| 276 | hwaddr phys_offset = memory_region_get_ram_addr(mr); |
Stefano Stabellini | d1814e0 | 2012-01-19 15:56:11 +0000 | [diff] [blame] | 277 | char path[80], value[17]; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 278 | |
| 279 | if (get_physmapping(state, start_addr, size)) { |
| 280 | return 0; |
| 281 | } |
| 282 | if (size <= 0) { |
| 283 | return -1; |
| 284 | } |
| 285 | |
Stefano Stabellini | ebed850 | 2011-06-15 17:29:27 +0100 | [diff] [blame] | 286 | /* Xen can only handle a single dirty log region for now and we want |
| 287 | * the linear framebuffer to be that region. |
| 288 | * Avoid tracking any regions that is not videoram and avoid tracking |
| 289 | * the legacy vga region. */ |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 290 | if (mr == framebuffer && start_addr > 0xbffff) { |
| 291 | goto go_physmap; |
Stefano Stabellini | ebed850 | 2011-06-15 17:29:27 +0100 | [diff] [blame] | 292 | } |
| 293 | return -1; |
| 294 | |
| 295 | go_physmap: |
Sander Eikelenboom | f1b8caf | 2012-12-17 11:37:43 +0000 | [diff] [blame] | 296 | DPRINTF("mapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx"\n", |
| 297 | start_addr, start_addr + size); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 298 | |
| 299 | pfn = phys_offset >> TARGET_PAGE_BITS; |
| 300 | start_gpfn = start_addr >> TARGET_PAGE_BITS; |
| 301 | for (i = 0; i < size >> TARGET_PAGE_BITS; i++) { |
| 302 | unsigned long idx = pfn + i; |
| 303 | xen_pfn_t gpfn = start_gpfn + i; |
| 304 | |
| 305 | rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn); |
| 306 | if (rc) { |
| 307 | DPRINTF("add_to_physmap MFN %"PRI_xen_pfn" to PFN %" |
| 308 | PRI_xen_pfn" failed: %d\n", idx, gpfn, rc); |
| 309 | return -rc; |
| 310 | } |
| 311 | } |
| 312 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 313 | physmap = g_malloc(sizeof (XenPhysmap)); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 314 | |
| 315 | physmap->start_addr = start_addr; |
| 316 | physmap->size = size; |
Stefano Stabellini | d1814e0 | 2012-01-19 15:56:11 +0000 | [diff] [blame] | 317 | physmap->name = (char *)mr->name; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 318 | physmap->phys_offset = phys_offset; |
| 319 | |
| 320 | QLIST_INSERT_HEAD(&state->physmap, physmap, list); |
| 321 | |
| 322 | xc_domain_pin_memory_cacheattr(xen_xc, xen_domid, |
| 323 | start_addr >> TARGET_PAGE_BITS, |
| 324 | (start_addr + size) >> TARGET_PAGE_BITS, |
| 325 | XEN_DOMCTL_MEM_CACHEATTR_WB); |
Stefano Stabellini | d1814e0 | 2012-01-19 15:56:11 +0000 | [diff] [blame] | 326 | |
| 327 | snprintf(path, sizeof(path), |
| 328 | "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr", |
| 329 | xen_domid, (uint64_t)phys_offset); |
| 330 | snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)start_addr); |
| 331 | if (!xs_write(state->xenstore, 0, path, value, strlen(value))) { |
| 332 | return -1; |
| 333 | } |
| 334 | snprintf(path, sizeof(path), |
| 335 | "/local/domain/0/device-model/%d/physmap/%"PRIx64"/size", |
| 336 | xen_domid, (uint64_t)phys_offset); |
| 337 | snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)size); |
| 338 | if (!xs_write(state->xenstore, 0, path, value, strlen(value))) { |
| 339 | return -1; |
| 340 | } |
| 341 | if (mr->name) { |
| 342 | snprintf(path, sizeof(path), |
| 343 | "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name", |
| 344 | xen_domid, (uint64_t)phys_offset); |
| 345 | if (!xs_write(state->xenstore, 0, path, mr->name, strlen(mr->name))) { |
| 346 | return -1; |
| 347 | } |
| 348 | } |
| 349 | |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 350 | return 0; |
| 351 | } |
| 352 | |
| 353 | static int xen_remove_from_physmap(XenIOState *state, |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 354 | hwaddr start_addr, |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 355 | ram_addr_t size) |
| 356 | { |
| 357 | unsigned long i = 0; |
| 358 | int rc = 0; |
| 359 | XenPhysmap *physmap = NULL; |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 360 | hwaddr phys_offset = 0; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 361 | |
| 362 | physmap = get_physmapping(state, start_addr, size); |
| 363 | if (physmap == NULL) { |
| 364 | return -1; |
| 365 | } |
| 366 | |
| 367 | phys_offset = physmap->phys_offset; |
| 368 | size = physmap->size; |
| 369 | |
Sander Eikelenboom | f1b8caf | 2012-12-17 11:37:43 +0000 | [diff] [blame] | 370 | DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", from ", |
| 371 | "%"HWADDR_PRIx"\n", phys_offset, phys_offset + size, start_addr); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 372 | |
| 373 | size >>= TARGET_PAGE_BITS; |
| 374 | start_addr >>= TARGET_PAGE_BITS; |
| 375 | phys_offset >>= TARGET_PAGE_BITS; |
| 376 | for (i = 0; i < size; i++) { |
| 377 | unsigned long idx = start_addr + i; |
| 378 | xen_pfn_t gpfn = phys_offset + i; |
| 379 | |
| 380 | rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn); |
| 381 | if (rc) { |
| 382 | fprintf(stderr, "add_to_physmap MFN %"PRI_xen_pfn" to PFN %" |
| 383 | PRI_xen_pfn" failed: %d\n", idx, gpfn, rc); |
| 384 | return -rc; |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | QLIST_REMOVE(physmap, list); |
| 389 | if (state->log_for_dirtybit == physmap) { |
| 390 | state->log_for_dirtybit = NULL; |
| 391 | } |
| 392 | free(physmap); |
| 393 | |
| 394 | return 0; |
| 395 | } |
| 396 | |
| 397 | #else |
| 398 | static int xen_add_to_physmap(XenIOState *state, |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 399 | hwaddr start_addr, |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 400 | ram_addr_t size, |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 401 | MemoryRegion *mr, |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 402 | hwaddr offset_within_region) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 403 | { |
| 404 | return -ENOSYS; |
| 405 | } |
| 406 | |
| 407 | static int xen_remove_from_physmap(XenIOState *state, |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 408 | hwaddr start_addr, |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 409 | ram_addr_t size) |
| 410 | { |
| 411 | return -ENOSYS; |
| 412 | } |
| 413 | #endif |
| 414 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 415 | static void xen_set_memory(struct MemoryListener *listener, |
| 416 | MemoryRegionSection *section, |
| 417 | bool add) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 418 | { |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 419 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 420 | hwaddr start_addr = section->offset_within_address_space; |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 421 | ram_addr_t size = section->size; |
| 422 | bool log_dirty = memory_region_is_logging(section->mr); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 423 | hvmmem_type_t mem_type; |
| 424 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 425 | if (!memory_region_is_ram(section->mr)) { |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 426 | return; |
| 427 | } |
| 428 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 429 | if (!(section->mr != &ram_memory |
| 430 | && ( (log_dirty && add) || (!log_dirty && !add)))) { |
| 431 | return; |
| 432 | } |
| 433 | |
| 434 | trace_xen_client_set_memory(start_addr, size, log_dirty); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 435 | |
| 436 | start_addr &= TARGET_PAGE_MASK; |
| 437 | size = TARGET_PAGE_ALIGN(size); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 438 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 439 | if (add) { |
| 440 | if (!memory_region_is_rom(section->mr)) { |
| 441 | xen_add_to_physmap(state, start_addr, size, |
| 442 | section->mr, section->offset_within_region); |
| 443 | } else { |
| 444 | mem_type = HVMMEM_ram_ro; |
| 445 | if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type, |
| 446 | start_addr >> TARGET_PAGE_BITS, |
| 447 | size >> TARGET_PAGE_BITS)) { |
| 448 | DPRINTF("xc_hvm_set_mem_type error, addr: "TARGET_FMT_plx"\n", |
| 449 | start_addr); |
| 450 | } |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 451 | } |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 452 | } else { |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 453 | if (xen_remove_from_physmap(state, start_addr, size) < 0) { |
| 454 | DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n", start_addr); |
| 455 | } |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 456 | } |
| 457 | } |
| 458 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 459 | static void xen_region_add(MemoryListener *listener, |
| 460 | MemoryRegionSection *section) |
| 461 | { |
| 462 | xen_set_memory(listener, section, true); |
| 463 | } |
| 464 | |
| 465 | static void xen_region_del(MemoryListener *listener, |
| 466 | MemoryRegionSection *section) |
| 467 | { |
| 468 | xen_set_memory(listener, section, false); |
| 469 | } |
| 470 | |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 471 | static void xen_sync_dirty_bitmap(XenIOState *state, |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 472 | hwaddr start_addr, |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 473 | ram_addr_t size) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 474 | { |
Avi Kivity | a8170e5 | 2012-10-23 12:30:10 +0200 | [diff] [blame] | 475 | hwaddr npages = size >> TARGET_PAGE_BITS; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 476 | const int width = sizeof(unsigned long) * 8; |
| 477 | unsigned long bitmap[(npages + width - 1) / width]; |
| 478 | int rc, i, j; |
| 479 | const XenPhysmap *physmap = NULL; |
| 480 | |
| 481 | physmap = get_physmapping(state, start_addr, size); |
| 482 | if (physmap == NULL) { |
| 483 | /* not handled */ |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 484 | return; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 485 | } |
| 486 | |
| 487 | if (state->log_for_dirtybit == NULL) { |
| 488 | state->log_for_dirtybit = physmap; |
| 489 | } else if (state->log_for_dirtybit != physmap) { |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 490 | /* Only one range for dirty bitmap can be tracked. */ |
| 491 | return; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 492 | } |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 493 | |
| 494 | rc = xc_hvm_track_dirty_vram(xen_xc, xen_domid, |
| 495 | start_addr >> TARGET_PAGE_BITS, npages, |
| 496 | bitmap); |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 497 | if (rc < 0) { |
| 498 | if (rc != -ENODATA) { |
Anthony PERARD | 8aba7dc | 2012-10-03 13:49:40 +0000 | [diff] [blame] | 499 | memory_region_set_dirty(framebuffer, 0, size); |
| 500 | DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 501 | ", 0x" TARGET_FMT_plx "): %s\n", |
| 502 | start_addr, start_addr + size, strerror(-rc)); |
| 503 | } |
| 504 | return; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 505 | } |
| 506 | |
| 507 | for (i = 0; i < ARRAY_SIZE(bitmap); i++) { |
| 508 | unsigned long map = bitmap[i]; |
| 509 | while (map != 0) { |
| 510 | j = ffsl(map) - 1; |
| 511 | map &= ~(1ul << j); |
Avi Kivity | 5a97065 | 2011-12-21 14:21:27 +0200 | [diff] [blame] | 512 | memory_region_set_dirty(framebuffer, |
Blue Swirl | fd4aa97 | 2011-10-16 16:04:59 +0000 | [diff] [blame] | 513 | (i * width + j) * TARGET_PAGE_SIZE, |
| 514 | TARGET_PAGE_SIZE); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 515 | }; |
| 516 | } |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 517 | } |
| 518 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 519 | static void xen_log_start(MemoryListener *listener, |
| 520 | MemoryRegionSection *section) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 521 | { |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 522 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 523 | |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 524 | xen_sync_dirty_bitmap(state, section->offset_within_address_space, |
| 525 | section->size); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 526 | } |
| 527 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 528 | static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 529 | { |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 530 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 531 | |
| 532 | state->log_for_dirtybit = NULL; |
| 533 | /* Disable dirty bit tracking */ |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 534 | xc_hvm_track_dirty_vram(xen_xc, xen_domid, 0, 0, NULL); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 535 | } |
| 536 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 537 | static void xen_log_sync(MemoryListener *listener, MemoryRegionSection *section) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 538 | { |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 539 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 540 | |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 541 | xen_sync_dirty_bitmap(state, section->offset_within_address_space, |
| 542 | section->size); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 543 | } |
| 544 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 545 | static void xen_log_global_start(MemoryListener *listener) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 546 | { |
Anthony PERARD | 39f4243 | 2012-10-03 13:48:19 +0000 | [diff] [blame] | 547 | if (xen_enabled()) { |
| 548 | xen_in_migration = true; |
| 549 | } |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 550 | } |
| 551 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 552 | static void xen_log_global_stop(MemoryListener *listener) |
| 553 | { |
Anthony PERARD | 39f4243 | 2012-10-03 13:48:19 +0000 | [diff] [blame] | 554 | xen_in_migration = false; |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 555 | } |
| 556 | |
| 557 | static MemoryListener xen_memory_listener = { |
| 558 | .region_add = xen_region_add, |
| 559 | .region_del = xen_region_del, |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 560 | .log_start = xen_log_start, |
| 561 | .log_stop = xen_log_stop, |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 562 | .log_sync = xen_log_sync, |
| 563 | .log_global_start = xen_log_global_start, |
| 564 | .log_global_stop = xen_log_global_stop, |
Avi Kivity | 72e22d2 | 2012-02-08 15:05:50 +0200 | [diff] [blame] | 565 | .priority = 10, |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 566 | }; |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 567 | |
Anthony PERARD | 39f4243 | 2012-10-03 13:48:19 +0000 | [diff] [blame] | 568 | void qmp_xen_set_global_dirty_log(bool enable, Error **errp) |
| 569 | { |
| 570 | if (enable) { |
| 571 | memory_global_dirty_log_start(); |
| 572 | } else { |
| 573 | memory_global_dirty_log_stop(); |
| 574 | } |
| 575 | } |
| 576 | |
Anthony PERARD | 29d3ccd | 2010-06-30 12:58:34 +0100 | [diff] [blame] | 577 | /* VCPU Operations, MMIO, IO ring ... */ |
| 578 | |
| 579 | static void xen_reset_vcpu(void *opaque) |
| 580 | { |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 581 | CPUArchState *env = opaque; |
Anthony PERARD | 29d3ccd | 2010-06-30 12:58:34 +0100 | [diff] [blame] | 582 | |
| 583 | env->halted = 1; |
| 584 | } |
| 585 | |
| 586 | void xen_vcpu_init(void) |
| 587 | { |
Andreas Färber | 4a1e40b | 2012-12-17 19:39:30 +0100 | [diff] [blame] | 588 | if (first_cpu != NULL) { |
Anthony PERARD | 29d3ccd | 2010-06-30 12:58:34 +0100 | [diff] [blame] | 589 | qemu_register_reset(xen_reset_vcpu, first_cpu); |
| 590 | xen_reset_vcpu(first_cpu); |
| 591 | } |
Stefano Stabellini | 95d5d75 | 2011-11-21 11:10:21 +0000 | [diff] [blame] | 592 | /* if rtc_clock is left to default (host_clock), disable it */ |
| 593 | if (rtc_clock == host_clock) { |
| 594 | qemu_clock_enable(rtc_clock, false); |
| 595 | } |
Anthony PERARD | 29d3ccd | 2010-06-30 12:58:34 +0100 | [diff] [blame] | 596 | } |
| 597 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 598 | /* get the ioreq packets from share mem */ |
| 599 | static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu) |
| 600 | { |
| 601 | ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu); |
| 602 | |
| 603 | if (req->state != STATE_IOREQ_READY) { |
| 604 | DPRINTF("I/O request not ready: " |
| 605 | "%x, ptr: %x, port: %"PRIx64", " |
| 606 | "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n", |
| 607 | req->state, req->data_is_ptr, req->addr, |
| 608 | req->data, req->count, req->size); |
| 609 | return NULL; |
| 610 | } |
| 611 | |
| 612 | xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */ |
| 613 | |
| 614 | req->state = STATE_IOREQ_INPROCESS; |
| 615 | return req; |
| 616 | } |
| 617 | |
| 618 | /* use poll to get the port notification */ |
| 619 | /* ioreq_vec--out,the */ |
| 620 | /* retval--the number of ioreq packet */ |
| 621 | static ioreq_t *cpu_get_ioreq(XenIOState *state) |
| 622 | { |
| 623 | int i; |
| 624 | evtchn_port_t port; |
| 625 | |
| 626 | port = xc_evtchn_pending(state->xce_handle); |
Stefano Stabellini | fda1f76 | 2012-04-13 17:46:01 +0000 | [diff] [blame] | 627 | if (port == state->bufioreq_local_port) { |
| 628 | qemu_mod_timer(state->buffered_io_timer, |
| 629 | BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock)); |
| 630 | return NULL; |
| 631 | } |
| 632 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 633 | if (port != -1) { |
| 634 | for (i = 0; i < smp_cpus; i++) { |
| 635 | if (state->ioreq_local_port[i] == port) { |
| 636 | break; |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | if (i == smp_cpus) { |
| 641 | hw_error("Fatal error while trying to get io event!\n"); |
| 642 | } |
| 643 | |
| 644 | /* unmask the wanted port again */ |
| 645 | xc_evtchn_unmask(state->xce_handle, port); |
| 646 | |
| 647 | /* get the io packet from shared memory */ |
| 648 | state->send_vcpu = i; |
| 649 | return cpu_get_ioreq_from_shared_memory(state, i); |
| 650 | } |
| 651 | |
| 652 | /* read error or read nothing */ |
| 653 | return NULL; |
| 654 | } |
| 655 | |
| 656 | static uint32_t do_inp(pio_addr_t addr, unsigned long size) |
| 657 | { |
| 658 | switch (size) { |
| 659 | case 1: |
| 660 | return cpu_inb(addr); |
| 661 | case 2: |
| 662 | return cpu_inw(addr); |
| 663 | case 4: |
| 664 | return cpu_inl(addr); |
| 665 | default: |
| 666 | hw_error("inp: bad size: %04"FMT_pioaddr" %lx", addr, size); |
| 667 | } |
| 668 | } |
| 669 | |
| 670 | static void do_outp(pio_addr_t addr, |
| 671 | unsigned long size, uint32_t val) |
| 672 | { |
| 673 | switch (size) { |
| 674 | case 1: |
| 675 | return cpu_outb(addr, val); |
| 676 | case 2: |
| 677 | return cpu_outw(addr, val); |
| 678 | case 4: |
| 679 | return cpu_outl(addr, val); |
| 680 | default: |
| 681 | hw_error("outp: bad size: %04"FMT_pioaddr" %lx", addr, size); |
| 682 | } |
| 683 | } |
| 684 | |
Ian Jackson | a386482 | 2012-12-17 11:43:19 +0000 | [diff] [blame] | 685 | /* |
| 686 | * Helper functions which read/write an object from/to physical guest |
| 687 | * memory, as part of the implementation of an ioreq. |
| 688 | * |
| 689 | * Equivalent to |
| 690 | * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i, |
| 691 | * val, req->size, 0/1) |
| 692 | * except without the integer overflow problems. |
| 693 | */ |
| 694 | static void rw_phys_req_item(hwaddr addr, |
| 695 | ioreq_t *req, uint32_t i, void *val, int rw) |
| 696 | { |
| 697 | /* Do everything unsigned so overflow just results in a truncated result |
| 698 | * and accesses to undesired parts of guest memory, which is up |
| 699 | * to the guest */ |
| 700 | hwaddr offset = (hwaddr)req->size * i; |
| 701 | if (req->df) { |
| 702 | addr -= offset; |
| 703 | } else { |
| 704 | addr += offset; |
| 705 | } |
| 706 | cpu_physical_memory_rw(addr, val, req->size, rw); |
| 707 | } |
| 708 | |
| 709 | static inline void read_phys_req_item(hwaddr addr, |
| 710 | ioreq_t *req, uint32_t i, void *val) |
| 711 | { |
| 712 | rw_phys_req_item(addr, req, i, val, 0); |
| 713 | } |
| 714 | static inline void write_phys_req_item(hwaddr addr, |
| 715 | ioreq_t *req, uint32_t i, void *val) |
| 716 | { |
| 717 | rw_phys_req_item(addr, req, i, val, 1); |
| 718 | } |
| 719 | |
| 720 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 721 | static void cpu_ioreq_pio(ioreq_t *req) |
| 722 | { |
Ian Jackson | 249e7e0 | 2012-12-17 11:44:02 +0000 | [diff] [blame] | 723 | uint32_t i; |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 724 | |
| 725 | if (req->dir == IOREQ_READ) { |
| 726 | if (!req->data_is_ptr) { |
| 727 | req->data = do_inp(req->addr, req->size); |
| 728 | } else { |
| 729 | uint32_t tmp; |
| 730 | |
| 731 | for (i = 0; i < req->count; i++) { |
| 732 | tmp = do_inp(req->addr, req->size); |
Ian Jackson | a386482 | 2012-12-17 11:43:19 +0000 | [diff] [blame] | 733 | write_phys_req_item(req->data, req, i, &tmp); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 734 | } |
| 735 | } |
| 736 | } else if (req->dir == IOREQ_WRITE) { |
| 737 | if (!req->data_is_ptr) { |
| 738 | do_outp(req->addr, req->size, req->data); |
| 739 | } else { |
| 740 | for (i = 0; i < req->count; i++) { |
| 741 | uint32_t tmp = 0; |
| 742 | |
Ian Jackson | a386482 | 2012-12-17 11:43:19 +0000 | [diff] [blame] | 743 | read_phys_req_item(req->data, req, i, &tmp); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 744 | do_outp(req->addr, req->size, tmp); |
| 745 | } |
| 746 | } |
| 747 | } |
| 748 | } |
| 749 | |
| 750 | static void cpu_ioreq_move(ioreq_t *req) |
| 751 | { |
Ian Jackson | 249e7e0 | 2012-12-17 11:44:02 +0000 | [diff] [blame] | 752 | uint32_t i; |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 753 | |
| 754 | if (!req->data_is_ptr) { |
| 755 | if (req->dir == IOREQ_READ) { |
| 756 | for (i = 0; i < req->count; i++) { |
Ian Jackson | a386482 | 2012-12-17 11:43:19 +0000 | [diff] [blame] | 757 | read_phys_req_item(req->addr, req, i, &req->data); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 758 | } |
| 759 | } else if (req->dir == IOREQ_WRITE) { |
| 760 | for (i = 0; i < req->count; i++) { |
Ian Jackson | a386482 | 2012-12-17 11:43:19 +0000 | [diff] [blame] | 761 | write_phys_req_item(req->addr, req, i, &req->data); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 762 | } |
| 763 | } |
| 764 | } else { |
Stefano Stabellini | 2b73434 | 2011-05-20 16:57:24 +0000 | [diff] [blame] | 765 | uint64_t tmp; |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 766 | |
| 767 | if (req->dir == IOREQ_READ) { |
| 768 | for (i = 0; i < req->count; i++) { |
Ian Jackson | a386482 | 2012-12-17 11:43:19 +0000 | [diff] [blame] | 769 | read_phys_req_item(req->addr, req, i, &tmp); |
| 770 | write_phys_req_item(req->data, req, i, &tmp); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 771 | } |
| 772 | } else if (req->dir == IOREQ_WRITE) { |
| 773 | for (i = 0; i < req->count; i++) { |
Ian Jackson | a386482 | 2012-12-17 11:43:19 +0000 | [diff] [blame] | 774 | read_phys_req_item(req->data, req, i, &tmp); |
| 775 | write_phys_req_item(req->addr, req, i, &tmp); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 776 | } |
| 777 | } |
| 778 | } |
| 779 | } |
| 780 | |
| 781 | static void handle_ioreq(ioreq_t *req) |
| 782 | { |
| 783 | if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) && |
| 784 | (req->size < sizeof (target_ulong))) { |
| 785 | req->data &= ((target_ulong) 1 << (8 * req->size)) - 1; |
| 786 | } |
| 787 | |
| 788 | switch (req->type) { |
| 789 | case IOREQ_TYPE_PIO: |
| 790 | cpu_ioreq_pio(req); |
| 791 | break; |
| 792 | case IOREQ_TYPE_COPY: |
| 793 | cpu_ioreq_move(req); |
| 794 | break; |
| 795 | case IOREQ_TYPE_TIMEOFFSET: |
| 796 | break; |
| 797 | case IOREQ_TYPE_INVALIDATE: |
Jan Kiszka | e41d7c6 | 2011-06-21 22:59:08 +0200 | [diff] [blame] | 798 | xen_invalidate_map_cache(); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 799 | break; |
| 800 | default: |
| 801 | hw_error("Invalid ioreq type 0x%x\n", req->type); |
| 802 | } |
| 803 | } |
| 804 | |
Stefano Stabellini | fda1f76 | 2012-04-13 17:46:01 +0000 | [diff] [blame] | 805 | static int handle_buffered_iopage(XenIOState *state) |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 806 | { |
| 807 | buf_ioreq_t *buf_req = NULL; |
| 808 | ioreq_t req; |
| 809 | int qw; |
| 810 | |
| 811 | if (!state->buffered_io_page) { |
Stefano Stabellini | fda1f76 | 2012-04-13 17:46:01 +0000 | [diff] [blame] | 812 | return 0; |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 813 | } |
| 814 | |
Stefano Stabellini | fda1f76 | 2012-04-13 17:46:01 +0000 | [diff] [blame] | 815 | memset(&req, 0x00, sizeof(req)); |
| 816 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 817 | while (state->buffered_io_page->read_pointer != state->buffered_io_page->write_pointer) { |
| 818 | buf_req = &state->buffered_io_page->buf_ioreq[ |
| 819 | state->buffered_io_page->read_pointer % IOREQ_BUFFER_SLOT_NUM]; |
| 820 | req.size = 1UL << buf_req->size; |
| 821 | req.count = 1; |
| 822 | req.addr = buf_req->addr; |
| 823 | req.data = buf_req->data; |
| 824 | req.state = STATE_IOREQ_READY; |
| 825 | req.dir = buf_req->dir; |
| 826 | req.df = 1; |
| 827 | req.type = buf_req->type; |
| 828 | req.data_is_ptr = 0; |
| 829 | qw = (req.size == 8); |
| 830 | if (qw) { |
| 831 | buf_req = &state->buffered_io_page->buf_ioreq[ |
| 832 | (state->buffered_io_page->read_pointer + 1) % IOREQ_BUFFER_SLOT_NUM]; |
| 833 | req.data |= ((uint64_t)buf_req->data) << 32; |
| 834 | } |
| 835 | |
| 836 | handle_ioreq(&req); |
| 837 | |
| 838 | xen_mb(); |
| 839 | state->buffered_io_page->read_pointer += qw ? 2 : 1; |
| 840 | } |
Stefano Stabellini | fda1f76 | 2012-04-13 17:46:01 +0000 | [diff] [blame] | 841 | |
| 842 | return req.count; |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 843 | } |
| 844 | |
| 845 | static void handle_buffered_io(void *opaque) |
| 846 | { |
| 847 | XenIOState *state = opaque; |
| 848 | |
Stefano Stabellini | fda1f76 | 2012-04-13 17:46:01 +0000 | [diff] [blame] | 849 | if (handle_buffered_iopage(state)) { |
| 850 | qemu_mod_timer(state->buffered_io_timer, |
| 851 | BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock)); |
| 852 | } else { |
| 853 | qemu_del_timer(state->buffered_io_timer); |
| 854 | xc_evtchn_unmask(state->xce_handle, state->bufioreq_local_port); |
| 855 | } |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 856 | } |
| 857 | |
| 858 | static void cpu_handle_ioreq(void *opaque) |
| 859 | { |
| 860 | XenIOState *state = opaque; |
| 861 | ioreq_t *req = cpu_get_ioreq(state); |
| 862 | |
| 863 | handle_buffered_iopage(state); |
| 864 | if (req) { |
| 865 | handle_ioreq(req); |
| 866 | |
| 867 | if (req->state != STATE_IOREQ_INPROCESS) { |
| 868 | fprintf(stderr, "Badness in I/O request ... not in service?!: " |
| 869 | "%x, ptr: %x, port: %"PRIx64", " |
| 870 | "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n", |
| 871 | req->state, req->data_is_ptr, req->addr, |
| 872 | req->data, req->count, req->size); |
John V. Baboval | 180640e | 2012-05-17 10:33:09 +0000 | [diff] [blame] | 873 | destroy_hvm_domain(false); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 874 | return; |
| 875 | } |
| 876 | |
| 877 | xen_wmb(); /* Update ioreq contents /then/ update state. */ |
| 878 | |
| 879 | /* |
| 880 | * We do this before we send the response so that the tools |
| 881 | * have the opportunity to pick up on the reset before the |
| 882 | * guest resumes and does a hlt with interrupts disabled which |
| 883 | * causes Xen to powerdown the domain. |
| 884 | */ |
Luiz Capitulino | 1354869 | 2011-07-29 15:36:43 -0300 | [diff] [blame] | 885 | if (runstate_is_running()) { |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 886 | if (qemu_shutdown_requested_get()) { |
John V. Baboval | 180640e | 2012-05-17 10:33:09 +0000 | [diff] [blame] | 887 | destroy_hvm_domain(false); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 888 | } |
| 889 | if (qemu_reset_requested_get()) { |
Jan Kiszka | e063eb1 | 2011-06-14 18:29:43 +0200 | [diff] [blame] | 890 | qemu_system_reset(VMRESET_REPORT); |
John V. Baboval | 180640e | 2012-05-17 10:33:09 +0000 | [diff] [blame] | 891 | destroy_hvm_domain(true); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 892 | } |
| 893 | } |
| 894 | |
| 895 | req->state = STATE_IORESP_READY; |
| 896 | xc_evtchn_notify(state->xce_handle, state->ioreq_local_port[state->send_vcpu]); |
| 897 | } |
| 898 | } |
| 899 | |
Stefano Stabellini | 0f51726 | 2011-06-30 18:26:29 +0100 | [diff] [blame] | 900 | static int store_dev_info(int domid, CharDriverState *cs, const char *string) |
| 901 | { |
| 902 | struct xs_handle *xs = NULL; |
| 903 | char *path = NULL; |
| 904 | char *newpath = NULL; |
| 905 | char *pts = NULL; |
| 906 | int ret = -1; |
| 907 | |
| 908 | /* Only continue if we're talking to a pty. */ |
| 909 | if (strncmp(cs->filename, "pty:", 4)) { |
| 910 | return 0; |
| 911 | } |
| 912 | pts = cs->filename + 4; |
| 913 | |
| 914 | /* We now have everything we need to set the xenstore entry. */ |
| 915 | xs = xs_open(0); |
| 916 | if (xs == NULL) { |
| 917 | fprintf(stderr, "Could not contact XenStore\n"); |
| 918 | goto out; |
| 919 | } |
| 920 | |
| 921 | path = xs_get_domain_path(xs, domid); |
| 922 | if (path == NULL) { |
| 923 | fprintf(stderr, "xs_get_domain_path() error\n"); |
| 924 | goto out; |
| 925 | } |
| 926 | newpath = realloc(path, (strlen(path) + strlen(string) + |
| 927 | strlen("/tty") + 1)); |
| 928 | if (newpath == NULL) { |
| 929 | fprintf(stderr, "realloc error\n"); |
| 930 | goto out; |
| 931 | } |
| 932 | path = newpath; |
| 933 | |
| 934 | strcat(path, string); |
| 935 | strcat(path, "/tty"); |
| 936 | if (!xs_write(xs, XBT_NULL, path, pts, strlen(pts))) { |
| 937 | fprintf(stderr, "xs_write for '%s' fail", string); |
| 938 | goto out; |
| 939 | } |
| 940 | ret = 0; |
| 941 | |
| 942 | out: |
| 943 | free(path); |
| 944 | xs_close(xs); |
| 945 | |
| 946 | return ret; |
| 947 | } |
| 948 | |
| 949 | void xenstore_store_pv_console_info(int i, CharDriverState *chr) |
| 950 | { |
| 951 | if (i == 0) { |
| 952 | store_dev_info(xen_domid, chr, "/console"); |
| 953 | } else { |
| 954 | char buf[32]; |
| 955 | snprintf(buf, sizeof(buf), "/device/console/%d", i); |
| 956 | store_dev_info(xen_domid, chr, buf); |
| 957 | } |
| 958 | } |
| 959 | |
Anthony PERARD | fb4bb2b | 2011-07-15 00:33:42 +0000 | [diff] [blame] | 960 | static void xenstore_record_dm_state(struct xs_handle *xs, const char *state) |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 961 | { |
| 962 | char path[50]; |
| 963 | |
Anthony PERARD | fb4bb2b | 2011-07-15 00:33:42 +0000 | [diff] [blame] | 964 | if (xs == NULL) { |
| 965 | fprintf(stderr, "xenstore connection not initialized\n"); |
| 966 | exit(1); |
| 967 | } |
| 968 | |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 969 | snprintf(path, sizeof (path), "/local/domain/0/device-model/%u/state", xen_domid); |
Anthony PERARD | fb4bb2b | 2011-07-15 00:33:42 +0000 | [diff] [blame] | 970 | if (!xs_write(xs, XBT_NULL, path, state, strlen(state))) { |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 971 | fprintf(stderr, "error recording dm state\n"); |
| 972 | exit(1); |
| 973 | } |
| 974 | } |
| 975 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 976 | static void xen_main_loop_prepare(XenIOState *state) |
| 977 | { |
| 978 | int evtchn_fd = -1; |
| 979 | |
| 980 | if (state->xce_handle != XC_HANDLER_INITIAL_VALUE) { |
| 981 | evtchn_fd = xc_evtchn_fd(state->xce_handle); |
| 982 | } |
| 983 | |
| 984 | state->buffered_io_timer = qemu_new_timer_ms(rt_clock, handle_buffered_io, |
| 985 | state); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 986 | |
| 987 | if (evtchn_fd != -1) { |
| 988 | qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state); |
| 989 | } |
| 990 | } |
| 991 | |
| 992 | |
Anthony PERARD | 3285cf4 | 2010-08-19 12:27:56 +0100 | [diff] [blame] | 993 | /* Initialise Xen */ |
| 994 | |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 995 | static void xen_change_state_handler(void *opaque, int running, |
| 996 | RunState state) |
Anthony PERARD | fb4bb2b | 2011-07-15 00:33:42 +0000 | [diff] [blame] | 997 | { |
| 998 | if (running) { |
| 999 | /* record state running */ |
| 1000 | xenstore_record_dm_state(xenstore, "running"); |
| 1001 | } |
| 1002 | } |
| 1003 | |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 1004 | static void xen_hvm_change_state_handler(void *opaque, int running, |
| 1005 | RunState rstate) |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1006 | { |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 1007 | XenIOState *xstate = opaque; |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1008 | if (running) { |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 1009 | xen_main_loop_prepare(xstate); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1010 | } |
| 1011 | } |
| 1012 | |
Jan Kiszka | 9e8dd45 | 2011-06-20 14:06:26 +0200 | [diff] [blame] | 1013 | static void xen_exit_notifier(Notifier *n, void *data) |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1014 | { |
| 1015 | XenIOState *state = container_of(n, XenIOState, exit); |
| 1016 | |
| 1017 | xc_evtchn_close(state->xce_handle); |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 1018 | xs_daemon_close(state->xenstore); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1019 | } |
| 1020 | |
Anthony PERARD | 3285cf4 | 2010-08-19 12:27:56 +0100 | [diff] [blame] | 1021 | int xen_init(void) |
| 1022 | { |
| 1023 | xen_xc = xen_xc_interface_open(0, 0, 0); |
| 1024 | if (xen_xc == XC_HANDLER_INITIAL_VALUE) { |
| 1025 | xen_be_printf(NULL, 0, "can't open xen interface\n"); |
| 1026 | return -1; |
| 1027 | } |
Anthony PERARD | fb4bb2b | 2011-07-15 00:33:42 +0000 | [diff] [blame] | 1028 | qemu_add_vm_change_state_handler(xen_change_state_handler, NULL); |
Anthony PERARD | 3285cf4 | 2010-08-19 12:27:56 +0100 | [diff] [blame] | 1029 | |
| 1030 | return 0; |
| 1031 | } |
Anthony PERARD | 29d3ccd | 2010-06-30 12:58:34 +0100 | [diff] [blame] | 1032 | |
Stefano Stabellini | d1814e0 | 2012-01-19 15:56:11 +0000 | [diff] [blame] | 1033 | static void xen_read_physmap(XenIOState *state) |
| 1034 | { |
| 1035 | XenPhysmap *physmap = NULL; |
| 1036 | unsigned int len, num, i; |
| 1037 | char path[80], *value = NULL; |
| 1038 | char **entries = NULL; |
| 1039 | |
| 1040 | snprintf(path, sizeof(path), |
| 1041 | "/local/domain/0/device-model/%d/physmap", xen_domid); |
| 1042 | entries = xs_directory(state->xenstore, 0, path, &num); |
| 1043 | if (entries == NULL) |
| 1044 | return; |
| 1045 | |
| 1046 | for (i = 0; i < num; i++) { |
| 1047 | physmap = g_malloc(sizeof (XenPhysmap)); |
| 1048 | physmap->phys_offset = strtoull(entries[i], NULL, 16); |
| 1049 | snprintf(path, sizeof(path), |
| 1050 | "/local/domain/0/device-model/%d/physmap/%s/start_addr", |
| 1051 | xen_domid, entries[i]); |
| 1052 | value = xs_read(state->xenstore, 0, path, &len); |
| 1053 | if (value == NULL) { |
| 1054 | free(physmap); |
| 1055 | continue; |
| 1056 | } |
| 1057 | physmap->start_addr = strtoull(value, NULL, 16); |
| 1058 | free(value); |
| 1059 | |
| 1060 | snprintf(path, sizeof(path), |
| 1061 | "/local/domain/0/device-model/%d/physmap/%s/size", |
| 1062 | xen_domid, entries[i]); |
| 1063 | value = xs_read(state->xenstore, 0, path, &len); |
| 1064 | if (value == NULL) { |
| 1065 | free(physmap); |
| 1066 | continue; |
| 1067 | } |
| 1068 | physmap->size = strtoull(value, NULL, 16); |
| 1069 | free(value); |
| 1070 | |
| 1071 | snprintf(path, sizeof(path), |
| 1072 | "/local/domain/0/device-model/%d/physmap/%s/name", |
| 1073 | xen_domid, entries[i]); |
| 1074 | physmap->name = xs_read(state->xenstore, 0, path, &len); |
| 1075 | |
| 1076 | QLIST_INSERT_HEAD(&state->physmap, physmap, list); |
| 1077 | } |
| 1078 | free(entries); |
Stefano Stabellini | d1814e0 | 2012-01-19 15:56:11 +0000 | [diff] [blame] | 1079 | } |
| 1080 | |
Anthony PERARD | 29d3ccd | 2010-06-30 12:58:34 +0100 | [diff] [blame] | 1081 | int xen_hvm_init(void) |
| 1082 | { |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1083 | int i, rc; |
| 1084 | unsigned long ioreq_pfn; |
Stefano Stabellini | fda1f76 | 2012-04-13 17:46:01 +0000 | [diff] [blame] | 1085 | unsigned long bufioreq_evtchn; |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1086 | XenIOState *state; |
| 1087 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1088 | state = g_malloc0(sizeof (XenIOState)); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1089 | |
| 1090 | state->xce_handle = xen_xc_evtchn_open(NULL, 0); |
| 1091 | if (state->xce_handle == XC_HANDLER_INITIAL_VALUE) { |
| 1092 | perror("xen: event channel open"); |
| 1093 | return -errno; |
| 1094 | } |
| 1095 | |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 1096 | state->xenstore = xs_daemon_open(); |
| 1097 | if (state->xenstore == NULL) { |
| 1098 | perror("xen: xenstore open"); |
| 1099 | return -errno; |
| 1100 | } |
| 1101 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1102 | state->exit.notify = xen_exit_notifier; |
| 1103 | qemu_add_exit_notifier(&state->exit); |
| 1104 | |
Gerd Hoffmann | da98c8e | 2012-02-23 13:45:20 +0100 | [diff] [blame] | 1105 | state->suspend.notify = xen_suspend_notifier; |
| 1106 | qemu_register_suspend_notifier(&state->suspend); |
| 1107 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1108 | xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_IOREQ_PFN, &ioreq_pfn); |
| 1109 | DPRINTF("shared page at pfn %lx\n", ioreq_pfn); |
| 1110 | state->shared_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE, |
| 1111 | PROT_READ|PROT_WRITE, ioreq_pfn); |
| 1112 | if (state->shared_page == NULL) { |
| 1113 | hw_error("map shared IO page returned error %d handle=" XC_INTERFACE_FMT, |
| 1114 | errno, xen_xc); |
| 1115 | } |
| 1116 | |
| 1117 | xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_PFN, &ioreq_pfn); |
| 1118 | DPRINTF("buffered io page at pfn %lx\n", ioreq_pfn); |
| 1119 | state->buffered_io_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE, |
| 1120 | PROT_READ|PROT_WRITE, ioreq_pfn); |
| 1121 | if (state->buffered_io_page == NULL) { |
| 1122 | hw_error("map buffered IO page returned error %d", errno); |
| 1123 | } |
| 1124 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 1125 | state->ioreq_local_port = g_malloc0(smp_cpus * sizeof (evtchn_port_t)); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1126 | |
| 1127 | /* FIXME: how about if we overflow the page here? */ |
| 1128 | for (i = 0; i < smp_cpus; i++) { |
| 1129 | rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid, |
| 1130 | xen_vcpu_eport(state->shared_page, i)); |
| 1131 | if (rc == -1) { |
| 1132 | fprintf(stderr, "bind interdomain ioctl error %d\n", errno); |
| 1133 | return -1; |
| 1134 | } |
| 1135 | state->ioreq_local_port[i] = rc; |
| 1136 | } |
| 1137 | |
Stefano Stabellini | fda1f76 | 2012-04-13 17:46:01 +0000 | [diff] [blame] | 1138 | rc = xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_EVTCHN, |
| 1139 | &bufioreq_evtchn); |
| 1140 | if (rc < 0) { |
| 1141 | fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n"); |
| 1142 | return -1; |
| 1143 | } |
| 1144 | rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid, |
| 1145 | (uint32_t)bufioreq_evtchn); |
| 1146 | if (rc == -1) { |
| 1147 | fprintf(stderr, "bind interdomain ioctl error %d\n", errno); |
| 1148 | return -1; |
| 1149 | } |
| 1150 | state->bufioreq_local_port = rc; |
| 1151 | |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 1152 | /* Init RAM management */ |
Anthony PERARD | cd1ba7d | 2012-01-18 12:21:38 +0000 | [diff] [blame] | 1153 | xen_map_cache_init(xen_phys_offset_to_gaddr, state); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 1154 | xen_ram_init(ram_size); |
| 1155 | |
Anthony PERARD | fb4bb2b | 2011-07-15 00:33:42 +0000 | [diff] [blame] | 1156 | qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1157 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 1158 | state->memory_listener = xen_memory_listener; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 1159 | QLIST_INIT(&state->physmap); |
Avi Kivity | f6790af | 2012-10-02 20:13:51 +0200 | [diff] [blame] | 1160 | memory_listener_register(&state->memory_listener, &address_space_memory); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 1161 | state->log_for_dirtybit = NULL; |
| 1162 | |
Stefano Stabellini | ad35a7d | 2011-06-24 15:54:48 +0100 | [diff] [blame] | 1163 | /* Initialize backend core & drivers */ |
| 1164 | if (xen_be_init() != 0) { |
| 1165 | fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__); |
| 1166 | exit(1); |
| 1167 | } |
| 1168 | xen_be_register("console", &xen_console_ops); |
Stefano Stabellini | 37cdfcf | 2011-06-24 17:36:11 +0100 | [diff] [blame] | 1169 | xen_be_register("vkbd", &xen_kbdmouse_ops); |
Stefano Stabellini | ad35a7d | 2011-06-24 15:54:48 +0100 | [diff] [blame] | 1170 | xen_be_register("qdisk", &xen_blkdev_ops); |
Stefano Stabellini | d1814e0 | 2012-01-19 15:56:11 +0000 | [diff] [blame] | 1171 | xen_read_physmap(state); |
Stefano Stabellini | ad35a7d | 2011-06-24 15:54:48 +0100 | [diff] [blame] | 1172 | |
Anthony PERARD | 29d3ccd | 2010-06-30 12:58:34 +0100 | [diff] [blame] | 1173 | return 0; |
| 1174 | } |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1175 | |
John V. Baboval | 180640e | 2012-05-17 10:33:09 +0000 | [diff] [blame] | 1176 | void destroy_hvm_domain(bool reboot) |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1177 | { |
| 1178 | XenXC xc_handle; |
| 1179 | int sts; |
| 1180 | |
| 1181 | xc_handle = xen_xc_interface_open(0, 0, 0); |
| 1182 | if (xc_handle == XC_HANDLER_INITIAL_VALUE) { |
| 1183 | fprintf(stderr, "Cannot acquire xenctrl handle\n"); |
| 1184 | } else { |
John V. Baboval | 180640e | 2012-05-17 10:33:09 +0000 | [diff] [blame] | 1185 | sts = xc_domain_shutdown(xc_handle, xen_domid, |
| 1186 | reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1187 | if (sts != 0) { |
John V. Baboval | 180640e | 2012-05-17 10:33:09 +0000 | [diff] [blame] | 1188 | fprintf(stderr, "xc_domain_shutdown failed to issue %s, " |
| 1189 | "sts %d, %s\n", reboot ? "reboot" : "poweroff", |
| 1190 | sts, strerror(errno)); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1191 | } else { |
John V. Baboval | 180640e | 2012-05-17 10:33:09 +0000 | [diff] [blame] | 1192 | fprintf(stderr, "Issued domain %d %s\n", xen_domid, |
| 1193 | reboot ? "reboot" : "poweroff"); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 1194 | } |
| 1195 | xc_interface_close(xc_handle); |
| 1196 | } |
| 1197 | } |
Avi Kivity | c65adf9 | 2011-12-18 16:40:50 +0200 | [diff] [blame] | 1198 | |
| 1199 | void xen_register_framebuffer(MemoryRegion *mr) |
| 1200 | { |
| 1201 | framebuffer = mr; |
| 1202 | } |
Allen Kay | eaab4d6 | 2012-06-21 15:40:09 +0000 | [diff] [blame] | 1203 | |
| 1204 | void xen_shutdown_fatal_error(const char *fmt, ...) |
| 1205 | { |
| 1206 | va_list ap; |
| 1207 | |
| 1208 | va_start(ap, fmt); |
| 1209 | vfprintf(stderr, fmt, ap); |
| 1210 | va_end(ap); |
| 1211 | fprintf(stderr, "Will destroy the domain.\n"); |
| 1212 | /* destroy the domain */ |
| 1213 | qemu_system_shutdown_request(); |
| 1214 | } |
Anthony PERARD | 910b38e | 2012-10-03 13:48:45 +0000 | [diff] [blame] | 1215 | |
| 1216 | void xen_modified_memory(ram_addr_t start, ram_addr_t length) |
| 1217 | { |
| 1218 | if (unlikely(xen_in_migration)) { |
| 1219 | int rc; |
| 1220 | ram_addr_t start_pfn, nb_pages; |
| 1221 | |
| 1222 | if (length == 0) { |
| 1223 | length = TARGET_PAGE_SIZE; |
| 1224 | } |
| 1225 | start_pfn = start >> TARGET_PAGE_BITS; |
| 1226 | nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >> TARGET_PAGE_BITS) |
| 1227 | - start_pfn; |
| 1228 | rc = xc_hvm_modified_memory(xen_xc, xen_domid, start_pfn, nb_pages); |
| 1229 | if (rc) { |
| 1230 | fprintf(stderr, |
| 1231 | "%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n", |
| 1232 | __func__, start, nb_pages, rc, strerror(-rc)); |
| 1233 | } |
| 1234 | } |
| 1235 | } |