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 | |
Anthony PERARD | 4144530 | 2010-07-16 14:55:39 +0100 | [diff] [blame] | 13 | #include "hw/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" |
| 17 | |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 18 | #include "range.h" |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 19 | #include "xen-mapcache.h" |
| 20 | #include "trace.h" |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 21 | #include "exec-memory.h" |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 22 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 23 | #include <xen/hvm/ioreq.h> |
| 24 | #include <xen/hvm/params.h> |
Anthony PERARD | 8a369e2 | 2011-07-20 08:17:43 +0000 | [diff] [blame] | 25 | #include <xen/hvm/e820.h> |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 26 | |
| 27 | //#define DEBUG_XEN |
| 28 | |
| 29 | #ifdef DEBUG_XEN |
| 30 | #define DPRINTF(fmt, ...) \ |
| 31 | do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0) |
| 32 | #else |
| 33 | #define DPRINTF(fmt, ...) \ |
| 34 | do { } while (0) |
| 35 | #endif |
| 36 | |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 37 | static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi; |
Avi Kivity | c65adf9 | 2011-12-18 16:40:50 +0200 | [diff] [blame] | 38 | static MemoryRegion *framebuffer; |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 39 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 40 | /* Compatibility with older version */ |
| 41 | #if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a |
| 42 | static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i) |
| 43 | { |
| 44 | return shared_page->vcpu_iodata[i].vp_eport; |
| 45 | } |
| 46 | static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu) |
| 47 | { |
| 48 | return &shared_page->vcpu_iodata[vcpu].vp_ioreq; |
| 49 | } |
| 50 | # define FMT_ioreq_size PRIx64 |
| 51 | #else |
| 52 | static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i) |
| 53 | { |
| 54 | return shared_page->vcpu_ioreq[i].vp_eport; |
| 55 | } |
| 56 | static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu) |
| 57 | { |
| 58 | return &shared_page->vcpu_ioreq[vcpu]; |
| 59 | } |
| 60 | # define FMT_ioreq_size "u" |
| 61 | #endif |
| 62 | |
| 63 | #define BUFFER_IO_MAX_DELAY 100 |
| 64 | |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 65 | typedef struct XenPhysmap { |
| 66 | target_phys_addr_t start_addr; |
| 67 | ram_addr_t size; |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 68 | MemoryRegion *mr; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 69 | target_phys_addr_t phys_offset; |
| 70 | |
| 71 | QLIST_ENTRY(XenPhysmap) list; |
| 72 | } XenPhysmap; |
| 73 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 74 | typedef struct XenIOState { |
| 75 | shared_iopage_t *shared_page; |
| 76 | buffered_iopage_t *buffered_io_page; |
| 77 | QEMUTimer *buffered_io_timer; |
| 78 | /* the evtchn port for polling the notification, */ |
| 79 | evtchn_port_t *ioreq_local_port; |
| 80 | /* the evtchn fd for polling */ |
| 81 | XenEvtchn xce_handle; |
| 82 | /* which vcpu we are serving */ |
| 83 | int send_vcpu; |
| 84 | |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 85 | struct xs_handle *xenstore; |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 86 | MemoryListener memory_listener; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 87 | QLIST_HEAD(, XenPhysmap) physmap; |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 88 | target_phys_addr_t free_phys_offset; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 89 | const XenPhysmap *log_for_dirtybit; |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 90 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 91 | Notifier exit; |
| 92 | } XenIOState; |
| 93 | |
Anthony PERARD | 4144530 | 2010-07-16 14:55:39 +0100 | [diff] [blame] | 94 | /* Xen specific function for piix pci */ |
| 95 | |
| 96 | int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num) |
| 97 | { |
| 98 | return irq_num + ((pci_dev->devfn >> 3) << 2); |
| 99 | } |
| 100 | |
| 101 | void xen_piix3_set_irq(void *opaque, int irq_num, int level) |
| 102 | { |
| 103 | xc_hvm_set_pci_intx_level(xen_xc, xen_domid, 0, 0, irq_num >> 2, |
| 104 | irq_num & 3, level); |
| 105 | } |
| 106 | |
| 107 | void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len) |
| 108 | { |
| 109 | int i; |
| 110 | |
| 111 | /* Scan for updates to PCI link routes (0x60-0x63). */ |
| 112 | for (i = 0; i < len; i++) { |
| 113 | uint8_t v = (val >> (8 * i)) & 0xff; |
| 114 | if (v & 0x80) { |
| 115 | v = 0; |
| 116 | } |
| 117 | v &= 0xf; |
| 118 | if (((address + i) >= 0x60) && ((address + i) <= 0x63)) { |
| 119 | xc_hvm_set_pci_link_route(xen_xc, xen_domid, address + i - 0x60, v); |
| 120 | } |
| 121 | } |
| 122 | } |
| 123 | |
Anthony PERARD | c962247 | 2010-10-05 16:40:22 +0100 | [diff] [blame] | 124 | void xen_cmos_set_s3_resume(void *opaque, int irq, int level) |
| 125 | { |
| 126 | pc_cmos_set_s3_resume(opaque, irq, level); |
| 127 | if (level) { |
| 128 | xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3); |
| 129 | } |
| 130 | } |
| 131 | |
Anthony PERARD | 9c11a8a | 2010-06-30 17:50:10 +0100 | [diff] [blame] | 132 | /* Xen Interrupt Controller */ |
| 133 | |
| 134 | static void xen_set_irq(void *opaque, int irq, int level) |
| 135 | { |
| 136 | xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level); |
| 137 | } |
| 138 | |
| 139 | qemu_irq *xen_interrupt_controller_init(void) |
| 140 | { |
| 141 | return qemu_allocate_irqs(xen_set_irq, NULL, 16); |
| 142 | } |
| 143 | |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 144 | /* Memory Ops */ |
| 145 | |
| 146 | static void xen_ram_init(ram_addr_t ram_size) |
| 147 | { |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 148 | MemoryRegion *sysmem = get_system_memory(); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 149 | ram_addr_t below_4g_mem_size, above_4g_mem_size = 0; |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 150 | ram_addr_t block_len; |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 151 | |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 152 | block_len = ram_size; |
Anthony PERARD | 8a369e2 | 2011-07-20 08:17:43 +0000 | [diff] [blame] | 153 | if (ram_size >= HVM_BELOW_4G_RAM_END) { |
| 154 | /* Xen does not allocate the memory continuously, and keep a hole at |
| 155 | * HVM_BELOW_4G_MMIO_START of HVM_BELOW_4G_MMIO_LENGTH |
| 156 | */ |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 157 | block_len += HVM_BELOW_4G_MMIO_LENGTH; |
Anthony PERARD | 8a369e2 | 2011-07-20 08:17:43 +0000 | [diff] [blame] | 158 | } |
Avi Kivity | c5705a7 | 2011-12-20 15:59:12 +0200 | [diff] [blame] | 159 | memory_region_init_ram(&ram_memory, "xen.ram", block_len); |
| 160 | vmstate_register_ram_global(&ram_memory); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 161 | |
Anthony PERARD | 8a369e2 | 2011-07-20 08:17:43 +0000 | [diff] [blame] | 162 | if (ram_size >= HVM_BELOW_4G_RAM_END) { |
| 163 | above_4g_mem_size = ram_size - HVM_BELOW_4G_RAM_END; |
| 164 | below_4g_mem_size = HVM_BELOW_4G_RAM_END; |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 165 | } else { |
| 166 | below_4g_mem_size = ram_size; |
| 167 | } |
| 168 | |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 169 | memory_region_init_alias(&ram_640k, "xen.ram.640k", |
| 170 | &ram_memory, 0, 0xa0000); |
| 171 | memory_region_add_subregion(sysmem, 0, &ram_640k); |
Anthony PERARD | 8a369e2 | 2011-07-20 08:17:43 +0000 | [diff] [blame] | 172 | /* Skip of the VGA IO memory space, it will be registered later by the VGA |
| 173 | * emulated device. |
| 174 | * |
| 175 | * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load |
| 176 | * the Options ROM, so it is registered here as RAM. |
| 177 | */ |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 178 | memory_region_init_alias(&ram_lo, "xen.ram.lo", |
| 179 | &ram_memory, 0xc0000, below_4g_mem_size - 0xc0000); |
| 180 | memory_region_add_subregion(sysmem, 0xc0000, &ram_lo); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 181 | if (above_4g_mem_size > 0) { |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 182 | memory_region_init_alias(&ram_hi, "xen.ram.hi", |
| 183 | &ram_memory, 0x100000000ULL, |
| 184 | above_4g_mem_size); |
| 185 | memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 186 | } |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 187 | } |
| 188 | |
Avi Kivity | fce537d | 2011-12-18 15:48:55 +0200 | [diff] [blame] | 189 | 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] | 190 | { |
| 191 | unsigned long nr_pfn; |
| 192 | xen_pfn_t *pfn_list; |
| 193 | int i; |
| 194 | |
Avi Kivity | ce76b8a | 2011-12-18 16:27:48 +0200 | [diff] [blame] | 195 | if (mr == &ram_memory) { |
| 196 | return; |
| 197 | } |
| 198 | |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 199 | trace_xen_ram_alloc(ram_addr, size); |
| 200 | |
| 201 | nr_pfn = size >> TARGET_PAGE_BITS; |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 202 | pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 203 | |
| 204 | for (i = 0; i < nr_pfn; i++) { |
| 205 | pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i; |
| 206 | } |
| 207 | |
| 208 | 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] | 209 | 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] | 210 | } |
| 211 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 212 | g_free(pfn_list); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 213 | } |
| 214 | |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 215 | static XenPhysmap *get_physmapping(XenIOState *state, |
| 216 | target_phys_addr_t start_addr, ram_addr_t size) |
| 217 | { |
| 218 | XenPhysmap *physmap = NULL; |
| 219 | |
| 220 | start_addr &= TARGET_PAGE_MASK; |
| 221 | |
| 222 | QLIST_FOREACH(physmap, &state->physmap, list) { |
| 223 | if (range_covers_byte(physmap->start_addr, physmap->size, start_addr)) { |
| 224 | return physmap; |
| 225 | } |
| 226 | } |
| 227 | return NULL; |
| 228 | } |
| 229 | |
| 230 | #if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 340 |
| 231 | static int xen_add_to_physmap(XenIOState *state, |
| 232 | target_phys_addr_t start_addr, |
| 233 | ram_addr_t size, |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 234 | MemoryRegion *mr, |
| 235 | target_phys_addr_t offset_within_region) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 236 | { |
| 237 | unsigned long i = 0; |
| 238 | int rc = 0; |
| 239 | XenPhysmap *physmap = NULL; |
| 240 | target_phys_addr_t pfn, start_gpfn; |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 241 | target_phys_addr_t phys_offset = memory_region_get_ram_addr(mr); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 242 | |
| 243 | if (get_physmapping(state, start_addr, size)) { |
| 244 | return 0; |
| 245 | } |
| 246 | if (size <= 0) { |
| 247 | return -1; |
| 248 | } |
| 249 | |
Stefano Stabellini | ebed850 | 2011-06-15 17:29:27 +0100 | [diff] [blame] | 250 | /* Xen can only handle a single dirty log region for now and we want |
| 251 | * the linear framebuffer to be that region. |
| 252 | * Avoid tracking any regions that is not videoram and avoid tracking |
| 253 | * the legacy vga region. */ |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 254 | if (mr == framebuffer && start_addr > 0xbffff) { |
| 255 | goto go_physmap; |
Stefano Stabellini | ebed850 | 2011-06-15 17:29:27 +0100 | [diff] [blame] | 256 | } |
| 257 | return -1; |
| 258 | |
| 259 | go_physmap: |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 260 | DPRINTF("mapping vram to %llx - %llx\n", start_addr, start_addr + size); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 261 | |
| 262 | pfn = phys_offset >> TARGET_PAGE_BITS; |
| 263 | start_gpfn = start_addr >> TARGET_PAGE_BITS; |
| 264 | for (i = 0; i < size >> TARGET_PAGE_BITS; i++) { |
| 265 | unsigned long idx = pfn + i; |
| 266 | xen_pfn_t gpfn = start_gpfn + i; |
| 267 | |
| 268 | rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn); |
| 269 | if (rc) { |
| 270 | DPRINTF("add_to_physmap MFN %"PRI_xen_pfn" to PFN %" |
| 271 | PRI_xen_pfn" failed: %d\n", idx, gpfn, rc); |
| 272 | return -rc; |
| 273 | } |
| 274 | } |
| 275 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 276 | physmap = g_malloc(sizeof (XenPhysmap)); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 277 | |
| 278 | physmap->start_addr = start_addr; |
| 279 | physmap->size = size; |
| 280 | physmap->phys_offset = phys_offset; |
| 281 | |
| 282 | QLIST_INSERT_HEAD(&state->physmap, physmap, list); |
| 283 | |
| 284 | xc_domain_pin_memory_cacheattr(xen_xc, xen_domid, |
| 285 | start_addr >> TARGET_PAGE_BITS, |
| 286 | (start_addr + size) >> TARGET_PAGE_BITS, |
| 287 | XEN_DOMCTL_MEM_CACHEATTR_WB); |
| 288 | return 0; |
| 289 | } |
| 290 | |
| 291 | static int xen_remove_from_physmap(XenIOState *state, |
| 292 | target_phys_addr_t start_addr, |
| 293 | ram_addr_t size) |
| 294 | { |
| 295 | unsigned long i = 0; |
| 296 | int rc = 0; |
| 297 | XenPhysmap *physmap = NULL; |
| 298 | target_phys_addr_t phys_offset = 0; |
| 299 | |
| 300 | physmap = get_physmapping(state, start_addr, size); |
| 301 | if (physmap == NULL) { |
| 302 | return -1; |
| 303 | } |
| 304 | |
| 305 | phys_offset = physmap->phys_offset; |
| 306 | size = physmap->size; |
| 307 | |
| 308 | DPRINTF("unmapping vram to %llx - %llx, from %llx\n", |
| 309 | phys_offset, phys_offset + size, start_addr); |
| 310 | |
| 311 | size >>= TARGET_PAGE_BITS; |
| 312 | start_addr >>= TARGET_PAGE_BITS; |
| 313 | phys_offset >>= TARGET_PAGE_BITS; |
| 314 | for (i = 0; i < size; i++) { |
| 315 | unsigned long idx = start_addr + i; |
| 316 | xen_pfn_t gpfn = phys_offset + i; |
| 317 | |
| 318 | rc = xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn, idx, gpfn); |
| 319 | if (rc) { |
| 320 | fprintf(stderr, "add_to_physmap MFN %"PRI_xen_pfn" to PFN %" |
| 321 | PRI_xen_pfn" failed: %d\n", idx, gpfn, rc); |
| 322 | return -rc; |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | QLIST_REMOVE(physmap, list); |
| 327 | if (state->log_for_dirtybit == physmap) { |
| 328 | state->log_for_dirtybit = NULL; |
| 329 | } |
| 330 | free(physmap); |
| 331 | |
| 332 | return 0; |
| 333 | } |
| 334 | |
| 335 | #else |
| 336 | static int xen_add_to_physmap(XenIOState *state, |
| 337 | target_phys_addr_t start_addr, |
| 338 | ram_addr_t size, |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 339 | MemoryRegion *mr, |
| 340 | target_phys_addr_t offset_within_region) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 341 | { |
| 342 | return -ENOSYS; |
| 343 | } |
| 344 | |
| 345 | static int xen_remove_from_physmap(XenIOState *state, |
| 346 | target_phys_addr_t start_addr, |
| 347 | ram_addr_t size) |
| 348 | { |
| 349 | return -ENOSYS; |
| 350 | } |
| 351 | #endif |
| 352 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 353 | static void xen_set_memory(struct MemoryListener *listener, |
| 354 | MemoryRegionSection *section, |
| 355 | bool add) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 356 | { |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 357 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
| 358 | target_phys_addr_t start_addr = section->offset_within_address_space; |
| 359 | ram_addr_t size = section->size; |
| 360 | bool log_dirty = memory_region_is_logging(section->mr); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 361 | hvmmem_type_t mem_type; |
| 362 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 363 | if (!memory_region_is_ram(section->mr)) { |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 364 | return; |
| 365 | } |
| 366 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 367 | if (!(section->mr != &ram_memory |
| 368 | && ( (log_dirty && add) || (!log_dirty && !add)))) { |
| 369 | return; |
| 370 | } |
| 371 | |
| 372 | trace_xen_client_set_memory(start_addr, size, log_dirty); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 373 | |
| 374 | start_addr &= TARGET_PAGE_MASK; |
| 375 | size = TARGET_PAGE_ALIGN(size); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 376 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 377 | if (add) { |
| 378 | if (!memory_region_is_rom(section->mr)) { |
| 379 | xen_add_to_physmap(state, start_addr, size, |
| 380 | section->mr, section->offset_within_region); |
| 381 | } else { |
| 382 | mem_type = HVMMEM_ram_ro; |
| 383 | if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type, |
| 384 | start_addr >> TARGET_PAGE_BITS, |
| 385 | size >> TARGET_PAGE_BITS)) { |
| 386 | DPRINTF("xc_hvm_set_mem_type error, addr: "TARGET_FMT_plx"\n", |
| 387 | start_addr); |
| 388 | } |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 389 | } |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 390 | } else { |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 391 | if (xen_remove_from_physmap(state, start_addr, size) < 0) { |
| 392 | DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n", start_addr); |
| 393 | } |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 394 | } |
| 395 | } |
| 396 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 397 | static void xen_region_add(MemoryListener *listener, |
| 398 | MemoryRegionSection *section) |
| 399 | { |
| 400 | xen_set_memory(listener, section, true); |
| 401 | } |
| 402 | |
| 403 | static void xen_region_del(MemoryListener *listener, |
| 404 | MemoryRegionSection *section) |
| 405 | { |
| 406 | xen_set_memory(listener, section, false); |
| 407 | } |
| 408 | |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 409 | static void xen_sync_dirty_bitmap(XenIOState *state, |
| 410 | target_phys_addr_t start_addr, |
| 411 | ram_addr_t size) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 412 | { |
| 413 | target_phys_addr_t npages = size >> TARGET_PAGE_BITS; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 414 | const int width = sizeof(unsigned long) * 8; |
| 415 | unsigned long bitmap[(npages + width - 1) / width]; |
| 416 | int rc, i, j; |
| 417 | const XenPhysmap *physmap = NULL; |
| 418 | |
| 419 | physmap = get_physmapping(state, start_addr, size); |
| 420 | if (physmap == NULL) { |
| 421 | /* not handled */ |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 422 | return; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 423 | } |
| 424 | |
| 425 | if (state->log_for_dirtybit == NULL) { |
| 426 | state->log_for_dirtybit = physmap; |
| 427 | } else if (state->log_for_dirtybit != physmap) { |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 428 | /* Only one range for dirty bitmap can be tracked. */ |
| 429 | return; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 430 | } |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 431 | |
| 432 | rc = xc_hvm_track_dirty_vram(xen_xc, xen_domid, |
| 433 | start_addr >> TARGET_PAGE_BITS, npages, |
| 434 | bitmap); |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 435 | if (rc < 0) { |
| 436 | if (rc != -ENODATA) { |
| 437 | fprintf(stderr, "xen: track_dirty_vram failed (0x" TARGET_FMT_plx |
| 438 | ", 0x" TARGET_FMT_plx "): %s\n", |
| 439 | start_addr, start_addr + size, strerror(-rc)); |
| 440 | } |
| 441 | return; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 442 | } |
| 443 | |
| 444 | for (i = 0; i < ARRAY_SIZE(bitmap); i++) { |
| 445 | unsigned long map = bitmap[i]; |
| 446 | while (map != 0) { |
| 447 | j = ffsl(map) - 1; |
| 448 | map &= ~(1ul << j); |
Avi Kivity | 5a97065 | 2011-12-21 14:21:27 +0200 | [diff] [blame] | 449 | memory_region_set_dirty(framebuffer, |
Blue Swirl | fd4aa97 | 2011-10-16 16:04:59 +0000 | [diff] [blame] | 450 | (i * width + j) * TARGET_PAGE_SIZE, |
| 451 | TARGET_PAGE_SIZE); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 452 | }; |
| 453 | } |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 454 | } |
| 455 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 456 | static void xen_log_start(MemoryListener *listener, |
| 457 | MemoryRegionSection *section) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 458 | { |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 459 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 460 | |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 461 | xen_sync_dirty_bitmap(state, section->offset_within_address_space, |
| 462 | section->size); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 463 | } |
| 464 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 465 | static void xen_log_stop(MemoryListener *listener, MemoryRegionSection *section) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 466 | { |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 467 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 468 | |
| 469 | state->log_for_dirtybit = NULL; |
| 470 | /* Disable dirty bit tracking */ |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 471 | xc_hvm_track_dirty_vram(xen_xc, xen_domid, 0, 0, NULL); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 472 | } |
| 473 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 474 | static void xen_log_sync(MemoryListener *listener, MemoryRegionSection *section) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 475 | { |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 476 | XenIOState *state = container_of(listener, XenIOState, memory_listener); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 477 | |
Anthony PERARD | b18620c | 2012-01-05 12:47:08 +0000 | [diff] [blame] | 478 | xen_sync_dirty_bitmap(state, section->offset_within_address_space, |
| 479 | section->size); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 480 | } |
| 481 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 482 | static void xen_log_global_start(MemoryListener *listener) |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 483 | { |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 484 | } |
| 485 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 486 | static void xen_log_global_stop(MemoryListener *listener) |
| 487 | { |
| 488 | } |
| 489 | |
| 490 | static MemoryListener xen_memory_listener = { |
| 491 | .region_add = xen_region_add, |
| 492 | .region_del = xen_region_del, |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 493 | .log_start = xen_log_start, |
| 494 | .log_stop = xen_log_stop, |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 495 | .log_sync = xen_log_sync, |
| 496 | .log_global_start = xen_log_global_start, |
| 497 | .log_global_stop = xen_log_global_stop, |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 498 | }; |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 499 | |
Anthony PERARD | 29d3ccd | 2010-06-30 12:58:34 +0100 | [diff] [blame] | 500 | /* VCPU Operations, MMIO, IO ring ... */ |
| 501 | |
| 502 | static void xen_reset_vcpu(void *opaque) |
| 503 | { |
| 504 | CPUState *env = opaque; |
| 505 | |
| 506 | env->halted = 1; |
| 507 | } |
| 508 | |
| 509 | void xen_vcpu_init(void) |
| 510 | { |
| 511 | CPUState *first_cpu; |
| 512 | |
| 513 | if ((first_cpu = qemu_get_cpu(0))) { |
| 514 | qemu_register_reset(xen_reset_vcpu, first_cpu); |
| 515 | xen_reset_vcpu(first_cpu); |
| 516 | } |
| 517 | } |
| 518 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 519 | /* get the ioreq packets from share mem */ |
| 520 | static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu) |
| 521 | { |
| 522 | ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu); |
| 523 | |
| 524 | if (req->state != STATE_IOREQ_READY) { |
| 525 | DPRINTF("I/O request not ready: " |
| 526 | "%x, ptr: %x, port: %"PRIx64", " |
| 527 | "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n", |
| 528 | req->state, req->data_is_ptr, req->addr, |
| 529 | req->data, req->count, req->size); |
| 530 | return NULL; |
| 531 | } |
| 532 | |
| 533 | xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */ |
| 534 | |
| 535 | req->state = STATE_IOREQ_INPROCESS; |
| 536 | return req; |
| 537 | } |
| 538 | |
| 539 | /* use poll to get the port notification */ |
| 540 | /* ioreq_vec--out,the */ |
| 541 | /* retval--the number of ioreq packet */ |
| 542 | static ioreq_t *cpu_get_ioreq(XenIOState *state) |
| 543 | { |
| 544 | int i; |
| 545 | evtchn_port_t port; |
| 546 | |
| 547 | port = xc_evtchn_pending(state->xce_handle); |
| 548 | if (port != -1) { |
| 549 | for (i = 0; i < smp_cpus; i++) { |
| 550 | if (state->ioreq_local_port[i] == port) { |
| 551 | break; |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | if (i == smp_cpus) { |
| 556 | hw_error("Fatal error while trying to get io event!\n"); |
| 557 | } |
| 558 | |
| 559 | /* unmask the wanted port again */ |
| 560 | xc_evtchn_unmask(state->xce_handle, port); |
| 561 | |
| 562 | /* get the io packet from shared memory */ |
| 563 | state->send_vcpu = i; |
| 564 | return cpu_get_ioreq_from_shared_memory(state, i); |
| 565 | } |
| 566 | |
| 567 | /* read error or read nothing */ |
| 568 | return NULL; |
| 569 | } |
| 570 | |
| 571 | static uint32_t do_inp(pio_addr_t addr, unsigned long size) |
| 572 | { |
| 573 | switch (size) { |
| 574 | case 1: |
| 575 | return cpu_inb(addr); |
| 576 | case 2: |
| 577 | return cpu_inw(addr); |
| 578 | case 4: |
| 579 | return cpu_inl(addr); |
| 580 | default: |
| 581 | hw_error("inp: bad size: %04"FMT_pioaddr" %lx", addr, size); |
| 582 | } |
| 583 | } |
| 584 | |
| 585 | static void do_outp(pio_addr_t addr, |
| 586 | unsigned long size, uint32_t val) |
| 587 | { |
| 588 | switch (size) { |
| 589 | case 1: |
| 590 | return cpu_outb(addr, val); |
| 591 | case 2: |
| 592 | return cpu_outw(addr, val); |
| 593 | case 4: |
| 594 | return cpu_outl(addr, val); |
| 595 | default: |
| 596 | hw_error("outp: bad size: %04"FMT_pioaddr" %lx", addr, size); |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | static void cpu_ioreq_pio(ioreq_t *req) |
| 601 | { |
| 602 | int i, sign; |
| 603 | |
| 604 | sign = req->df ? -1 : 1; |
| 605 | |
| 606 | if (req->dir == IOREQ_READ) { |
| 607 | if (!req->data_is_ptr) { |
| 608 | req->data = do_inp(req->addr, req->size); |
| 609 | } else { |
| 610 | uint32_t tmp; |
| 611 | |
| 612 | for (i = 0; i < req->count; i++) { |
| 613 | tmp = do_inp(req->addr, req->size); |
| 614 | cpu_physical_memory_write(req->data + (sign * i * req->size), |
| 615 | (uint8_t *) &tmp, req->size); |
| 616 | } |
| 617 | } |
| 618 | } else if (req->dir == IOREQ_WRITE) { |
| 619 | if (!req->data_is_ptr) { |
| 620 | do_outp(req->addr, req->size, req->data); |
| 621 | } else { |
| 622 | for (i = 0; i < req->count; i++) { |
| 623 | uint32_t tmp = 0; |
| 624 | |
| 625 | cpu_physical_memory_read(req->data + (sign * i * req->size), |
| 626 | (uint8_t*) &tmp, req->size); |
| 627 | do_outp(req->addr, req->size, tmp); |
| 628 | } |
| 629 | } |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | static void cpu_ioreq_move(ioreq_t *req) |
| 634 | { |
| 635 | int i, sign; |
| 636 | |
| 637 | sign = req->df ? -1 : 1; |
| 638 | |
| 639 | if (!req->data_is_ptr) { |
| 640 | if (req->dir == IOREQ_READ) { |
| 641 | for (i = 0; i < req->count; i++) { |
| 642 | cpu_physical_memory_read(req->addr + (sign * i * req->size), |
| 643 | (uint8_t *) &req->data, req->size); |
| 644 | } |
| 645 | } else if (req->dir == IOREQ_WRITE) { |
| 646 | for (i = 0; i < req->count; i++) { |
| 647 | cpu_physical_memory_write(req->addr + (sign * i * req->size), |
| 648 | (uint8_t *) &req->data, req->size); |
| 649 | } |
| 650 | } |
| 651 | } else { |
Stefano Stabellini | 2b73434 | 2011-05-20 16:57:24 +0000 | [diff] [blame] | 652 | uint64_t tmp; |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 653 | |
| 654 | if (req->dir == IOREQ_READ) { |
| 655 | for (i = 0; i < req->count; i++) { |
| 656 | cpu_physical_memory_read(req->addr + (sign * i * req->size), |
| 657 | (uint8_t*) &tmp, req->size); |
| 658 | cpu_physical_memory_write(req->data + (sign * i * req->size), |
| 659 | (uint8_t*) &tmp, req->size); |
| 660 | } |
| 661 | } else if (req->dir == IOREQ_WRITE) { |
| 662 | for (i = 0; i < req->count; i++) { |
| 663 | cpu_physical_memory_read(req->data + (sign * i * req->size), |
| 664 | (uint8_t*) &tmp, req->size); |
| 665 | cpu_physical_memory_write(req->addr + (sign * i * req->size), |
| 666 | (uint8_t*) &tmp, req->size); |
| 667 | } |
| 668 | } |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | static void handle_ioreq(ioreq_t *req) |
| 673 | { |
| 674 | if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) && |
| 675 | (req->size < sizeof (target_ulong))) { |
| 676 | req->data &= ((target_ulong) 1 << (8 * req->size)) - 1; |
| 677 | } |
| 678 | |
| 679 | switch (req->type) { |
| 680 | case IOREQ_TYPE_PIO: |
| 681 | cpu_ioreq_pio(req); |
| 682 | break; |
| 683 | case IOREQ_TYPE_COPY: |
| 684 | cpu_ioreq_move(req); |
| 685 | break; |
| 686 | case IOREQ_TYPE_TIMEOFFSET: |
| 687 | break; |
| 688 | case IOREQ_TYPE_INVALIDATE: |
Jan Kiszka | e41d7c6 | 2011-06-21 22:59:08 +0200 | [diff] [blame] | 689 | xen_invalidate_map_cache(); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 690 | break; |
| 691 | default: |
| 692 | hw_error("Invalid ioreq type 0x%x\n", req->type); |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | static void handle_buffered_iopage(XenIOState *state) |
| 697 | { |
| 698 | buf_ioreq_t *buf_req = NULL; |
| 699 | ioreq_t req; |
| 700 | int qw; |
| 701 | |
| 702 | if (!state->buffered_io_page) { |
| 703 | return; |
| 704 | } |
| 705 | |
| 706 | while (state->buffered_io_page->read_pointer != state->buffered_io_page->write_pointer) { |
| 707 | buf_req = &state->buffered_io_page->buf_ioreq[ |
| 708 | state->buffered_io_page->read_pointer % IOREQ_BUFFER_SLOT_NUM]; |
| 709 | req.size = 1UL << buf_req->size; |
| 710 | req.count = 1; |
| 711 | req.addr = buf_req->addr; |
| 712 | req.data = buf_req->data; |
| 713 | req.state = STATE_IOREQ_READY; |
| 714 | req.dir = buf_req->dir; |
| 715 | req.df = 1; |
| 716 | req.type = buf_req->type; |
| 717 | req.data_is_ptr = 0; |
| 718 | qw = (req.size == 8); |
| 719 | if (qw) { |
| 720 | buf_req = &state->buffered_io_page->buf_ioreq[ |
| 721 | (state->buffered_io_page->read_pointer + 1) % IOREQ_BUFFER_SLOT_NUM]; |
| 722 | req.data |= ((uint64_t)buf_req->data) << 32; |
| 723 | } |
| 724 | |
| 725 | handle_ioreq(&req); |
| 726 | |
| 727 | xen_mb(); |
| 728 | state->buffered_io_page->read_pointer += qw ? 2 : 1; |
| 729 | } |
| 730 | } |
| 731 | |
| 732 | static void handle_buffered_io(void *opaque) |
| 733 | { |
| 734 | XenIOState *state = opaque; |
| 735 | |
| 736 | handle_buffered_iopage(state); |
| 737 | qemu_mod_timer(state->buffered_io_timer, |
| 738 | BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock)); |
| 739 | } |
| 740 | |
| 741 | static void cpu_handle_ioreq(void *opaque) |
| 742 | { |
| 743 | XenIOState *state = opaque; |
| 744 | ioreq_t *req = cpu_get_ioreq(state); |
| 745 | |
| 746 | handle_buffered_iopage(state); |
| 747 | if (req) { |
| 748 | handle_ioreq(req); |
| 749 | |
| 750 | if (req->state != STATE_IOREQ_INPROCESS) { |
| 751 | fprintf(stderr, "Badness in I/O request ... not in service?!: " |
| 752 | "%x, ptr: %x, port: %"PRIx64", " |
| 753 | "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n", |
| 754 | req->state, req->data_is_ptr, req->addr, |
| 755 | req->data, req->count, req->size); |
| 756 | destroy_hvm_domain(); |
| 757 | return; |
| 758 | } |
| 759 | |
| 760 | xen_wmb(); /* Update ioreq contents /then/ update state. */ |
| 761 | |
| 762 | /* |
| 763 | * We do this before we send the response so that the tools |
| 764 | * have the opportunity to pick up on the reset before the |
| 765 | * guest resumes and does a hlt with interrupts disabled which |
| 766 | * causes Xen to powerdown the domain. |
| 767 | */ |
Luiz Capitulino | 1354869 | 2011-07-29 15:36:43 -0300 | [diff] [blame] | 768 | if (runstate_is_running()) { |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 769 | if (qemu_shutdown_requested_get()) { |
| 770 | destroy_hvm_domain(); |
| 771 | } |
| 772 | if (qemu_reset_requested_get()) { |
Jan Kiszka | e063eb1 | 2011-06-14 18:29:43 +0200 | [diff] [blame] | 773 | qemu_system_reset(VMRESET_REPORT); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 774 | } |
| 775 | } |
| 776 | |
| 777 | req->state = STATE_IORESP_READY; |
| 778 | xc_evtchn_notify(state->xce_handle, state->ioreq_local_port[state->send_vcpu]); |
| 779 | } |
| 780 | } |
| 781 | |
Stefano Stabellini | 0f51726 | 2011-06-30 18:26:29 +0100 | [diff] [blame] | 782 | static int store_dev_info(int domid, CharDriverState *cs, const char *string) |
| 783 | { |
| 784 | struct xs_handle *xs = NULL; |
| 785 | char *path = NULL; |
| 786 | char *newpath = NULL; |
| 787 | char *pts = NULL; |
| 788 | int ret = -1; |
| 789 | |
| 790 | /* Only continue if we're talking to a pty. */ |
| 791 | if (strncmp(cs->filename, "pty:", 4)) { |
| 792 | return 0; |
| 793 | } |
| 794 | pts = cs->filename + 4; |
| 795 | |
| 796 | /* We now have everything we need to set the xenstore entry. */ |
| 797 | xs = xs_open(0); |
| 798 | if (xs == NULL) { |
| 799 | fprintf(stderr, "Could not contact XenStore\n"); |
| 800 | goto out; |
| 801 | } |
| 802 | |
| 803 | path = xs_get_domain_path(xs, domid); |
| 804 | if (path == NULL) { |
| 805 | fprintf(stderr, "xs_get_domain_path() error\n"); |
| 806 | goto out; |
| 807 | } |
| 808 | newpath = realloc(path, (strlen(path) + strlen(string) + |
| 809 | strlen("/tty") + 1)); |
| 810 | if (newpath == NULL) { |
| 811 | fprintf(stderr, "realloc error\n"); |
| 812 | goto out; |
| 813 | } |
| 814 | path = newpath; |
| 815 | |
| 816 | strcat(path, string); |
| 817 | strcat(path, "/tty"); |
| 818 | if (!xs_write(xs, XBT_NULL, path, pts, strlen(pts))) { |
| 819 | fprintf(stderr, "xs_write for '%s' fail", string); |
| 820 | goto out; |
| 821 | } |
| 822 | ret = 0; |
| 823 | |
| 824 | out: |
| 825 | free(path); |
| 826 | xs_close(xs); |
| 827 | |
| 828 | return ret; |
| 829 | } |
| 830 | |
| 831 | void xenstore_store_pv_console_info(int i, CharDriverState *chr) |
| 832 | { |
| 833 | if (i == 0) { |
| 834 | store_dev_info(xen_domid, chr, "/console"); |
| 835 | } else { |
| 836 | char buf[32]; |
| 837 | snprintf(buf, sizeof(buf), "/device/console/%d", i); |
| 838 | store_dev_info(xen_domid, chr, buf); |
| 839 | } |
| 840 | } |
| 841 | |
Anthony PERARD | fb4bb2b | 2011-07-15 00:33:42 +0000 | [diff] [blame] | 842 | 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] | 843 | { |
| 844 | char path[50]; |
| 845 | |
Anthony PERARD | fb4bb2b | 2011-07-15 00:33:42 +0000 | [diff] [blame] | 846 | if (xs == NULL) { |
| 847 | fprintf(stderr, "xenstore connection not initialized\n"); |
| 848 | exit(1); |
| 849 | } |
| 850 | |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 851 | 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] | 852 | if (!xs_write(xs, XBT_NULL, path, state, strlen(state))) { |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 853 | fprintf(stderr, "error recording dm state\n"); |
| 854 | exit(1); |
| 855 | } |
| 856 | } |
| 857 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 858 | static void xen_main_loop_prepare(XenIOState *state) |
| 859 | { |
| 860 | int evtchn_fd = -1; |
| 861 | |
| 862 | if (state->xce_handle != XC_HANDLER_INITIAL_VALUE) { |
| 863 | evtchn_fd = xc_evtchn_fd(state->xce_handle); |
| 864 | } |
| 865 | |
| 866 | state->buffered_io_timer = qemu_new_timer_ms(rt_clock, handle_buffered_io, |
| 867 | state); |
| 868 | qemu_mod_timer(state->buffered_io_timer, qemu_get_clock_ms(rt_clock)); |
| 869 | |
| 870 | if (evtchn_fd != -1) { |
| 871 | qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state); |
| 872 | } |
| 873 | } |
| 874 | |
| 875 | |
Anthony PERARD | 3285cf4 | 2010-08-19 12:27:56 +0100 | [diff] [blame] | 876 | /* Initialise Xen */ |
| 877 | |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 878 | static void xen_change_state_handler(void *opaque, int running, |
| 879 | RunState state) |
Anthony PERARD | fb4bb2b | 2011-07-15 00:33:42 +0000 | [diff] [blame] | 880 | { |
| 881 | if (running) { |
| 882 | /* record state running */ |
| 883 | xenstore_record_dm_state(xenstore, "running"); |
| 884 | } |
| 885 | } |
| 886 | |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 887 | static void xen_hvm_change_state_handler(void *opaque, int running, |
| 888 | RunState rstate) |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 889 | { |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 890 | XenIOState *xstate = opaque; |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 891 | if (running) { |
Luiz Capitulino | 1dfb4dd | 2011-07-29 14:26:33 -0300 | [diff] [blame] | 892 | xen_main_loop_prepare(xstate); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 893 | } |
| 894 | } |
| 895 | |
Jan Kiszka | 9e8dd45 | 2011-06-20 14:06:26 +0200 | [diff] [blame] | 896 | static void xen_exit_notifier(Notifier *n, void *data) |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 897 | { |
| 898 | XenIOState *state = container_of(n, XenIOState, exit); |
| 899 | |
| 900 | xc_evtchn_close(state->xce_handle); |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 901 | xs_daemon_close(state->xenstore); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 902 | } |
| 903 | |
Anthony PERARD | 3285cf4 | 2010-08-19 12:27:56 +0100 | [diff] [blame] | 904 | int xen_init(void) |
| 905 | { |
| 906 | xen_xc = xen_xc_interface_open(0, 0, 0); |
| 907 | if (xen_xc == XC_HANDLER_INITIAL_VALUE) { |
| 908 | xen_be_printf(NULL, 0, "can't open xen interface\n"); |
| 909 | return -1; |
| 910 | } |
Anthony PERARD | fb4bb2b | 2011-07-15 00:33:42 +0000 | [diff] [blame] | 911 | qemu_add_vm_change_state_handler(xen_change_state_handler, NULL); |
Anthony PERARD | 3285cf4 | 2010-08-19 12:27:56 +0100 | [diff] [blame] | 912 | |
| 913 | return 0; |
| 914 | } |
Anthony PERARD | 29d3ccd | 2010-06-30 12:58:34 +0100 | [diff] [blame] | 915 | |
| 916 | int xen_hvm_init(void) |
| 917 | { |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 918 | int i, rc; |
| 919 | unsigned long ioreq_pfn; |
| 920 | XenIOState *state; |
| 921 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 922 | state = g_malloc0(sizeof (XenIOState)); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 923 | |
| 924 | state->xce_handle = xen_xc_evtchn_open(NULL, 0); |
| 925 | if (state->xce_handle == XC_HANDLER_INITIAL_VALUE) { |
| 926 | perror("xen: event channel open"); |
| 927 | return -errno; |
| 928 | } |
| 929 | |
Anthony PERARD | 2932133 | 2010-09-06 20:07:33 +0100 | [diff] [blame] | 930 | state->xenstore = xs_daemon_open(); |
| 931 | if (state->xenstore == NULL) { |
| 932 | perror("xen: xenstore open"); |
| 933 | return -errno; |
| 934 | } |
| 935 | |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 936 | state->exit.notify = xen_exit_notifier; |
| 937 | qemu_add_exit_notifier(&state->exit); |
| 938 | |
| 939 | xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_IOREQ_PFN, &ioreq_pfn); |
| 940 | DPRINTF("shared page at pfn %lx\n", ioreq_pfn); |
| 941 | state->shared_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE, |
| 942 | PROT_READ|PROT_WRITE, ioreq_pfn); |
| 943 | if (state->shared_page == NULL) { |
| 944 | hw_error("map shared IO page returned error %d handle=" XC_INTERFACE_FMT, |
| 945 | errno, xen_xc); |
| 946 | } |
| 947 | |
| 948 | xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_PFN, &ioreq_pfn); |
| 949 | DPRINTF("buffered io page at pfn %lx\n", ioreq_pfn); |
| 950 | state->buffered_io_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE, |
| 951 | PROT_READ|PROT_WRITE, ioreq_pfn); |
| 952 | if (state->buffered_io_page == NULL) { |
| 953 | hw_error("map buffered IO page returned error %d", errno); |
| 954 | } |
| 955 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 956 | state->ioreq_local_port = g_malloc0(smp_cpus * sizeof (evtchn_port_t)); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 957 | |
| 958 | /* FIXME: how about if we overflow the page here? */ |
| 959 | for (i = 0; i < smp_cpus; i++) { |
| 960 | rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid, |
| 961 | xen_vcpu_eport(state->shared_page, i)); |
| 962 | if (rc == -1) { |
| 963 | fprintf(stderr, "bind interdomain ioctl error %d\n", errno); |
| 964 | return -1; |
| 965 | } |
| 966 | state->ioreq_local_port[i] = rc; |
| 967 | } |
| 968 | |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 969 | /* Init RAM management */ |
Jan Kiszka | e41d7c6 | 2011-06-21 22:59:08 +0200 | [diff] [blame] | 970 | xen_map_cache_init(); |
Jun Nakajima | 432d268 | 2010-08-31 16:41:25 +0100 | [diff] [blame] | 971 | xen_ram_init(ram_size); |
| 972 | |
Anthony PERARD | fb4bb2b | 2011-07-15 00:33:42 +0000 | [diff] [blame] | 973 | qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state); |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 974 | |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 975 | state->memory_listener = xen_memory_listener; |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 976 | QLIST_INIT(&state->physmap); |
Avi Kivity | 20581d2 | 2011-12-19 12:07:50 +0200 | [diff] [blame] | 977 | memory_listener_register(&state->memory_listener); |
Anthony PERARD | b4dd780 | 2011-05-24 14:34:21 +0100 | [diff] [blame] | 978 | state->log_for_dirtybit = NULL; |
| 979 | |
Stefano Stabellini | ad35a7d | 2011-06-24 15:54:48 +0100 | [diff] [blame] | 980 | /* Initialize backend core & drivers */ |
| 981 | if (xen_be_init() != 0) { |
| 982 | fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__); |
| 983 | exit(1); |
| 984 | } |
| 985 | xen_be_register("console", &xen_console_ops); |
Stefano Stabellini | 37cdfcf | 2011-06-24 17:36:11 +0100 | [diff] [blame] | 986 | xen_be_register("vkbd", &xen_kbdmouse_ops); |
Stefano Stabellini | ad35a7d | 2011-06-24 15:54:48 +0100 | [diff] [blame] | 987 | xen_be_register("qdisk", &xen_blkdev_ops); |
| 988 | |
Anthony PERARD | 29d3ccd | 2010-06-30 12:58:34 +0100 | [diff] [blame] | 989 | return 0; |
| 990 | } |
Arun Sharma | 9ce94e7 | 2010-09-06 20:07:14 +0100 | [diff] [blame] | 991 | |
| 992 | void destroy_hvm_domain(void) |
| 993 | { |
| 994 | XenXC xc_handle; |
| 995 | int sts; |
| 996 | |
| 997 | xc_handle = xen_xc_interface_open(0, 0, 0); |
| 998 | if (xc_handle == XC_HANDLER_INITIAL_VALUE) { |
| 999 | fprintf(stderr, "Cannot acquire xenctrl handle\n"); |
| 1000 | } else { |
| 1001 | sts = xc_domain_shutdown(xc_handle, xen_domid, SHUTDOWN_poweroff); |
| 1002 | if (sts != 0) { |
| 1003 | fprintf(stderr, "? xc_domain_shutdown failed to issue poweroff, " |
| 1004 | "sts %d, %s\n", sts, strerror(errno)); |
| 1005 | } else { |
| 1006 | fprintf(stderr, "Issued domain %d poweroff\n", xen_domid); |
| 1007 | } |
| 1008 | xc_interface_close(xc_handle); |
| 1009 | } |
| 1010 | } |
Avi Kivity | c65adf9 | 2011-12-18 16:40:50 +0200 | [diff] [blame] | 1011 | |
| 1012 | void xen_register_framebuffer(MemoryRegion *mr) |
| 1013 | { |
| 1014 | framebuffer = mr; |
| 1015 | } |