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authorStefano Stabellini <stefano.stabellini@amd.com>2023-06-14 17:03:32 -0700
committerStefano Stabellini <stefano.stabellini@amd.com>2023-06-15 16:45:59 -0700
commitf17068c1c784d9732982e8977d6f18dce08f1fe1 (patch)
tree9f54689bdbbd91da31a96492ac9a086e1d93af66 /hw/i386
parent9269b9d1888c2b17d2e9948abf9f6310b3afbac3 (diff)
xen-hvm: reorganize xen-hvm and move common function to xen-hvm-common
This patch does following: 1. creates arch_handle_ioreq() and arch_xen_set_memory(). This is done in preparation for moving most of xen-hvm code to an arch-neutral location, move the x86-specific portion of xen_set_memory to arch_xen_set_memory. Also, move handle_vmport_ioreq to arch_handle_ioreq. 2. Pure code movement: move common functions to hw/xen/xen-hvm-common.c Extract common functionalities from hw/i386/xen/xen-hvm.c and move them to hw/xen/xen-hvm-common.c. These common functions are useful for creating an IOREQ server. xen_hvm_init_pc() contains the architecture independent code for creating and mapping a IOREQ server, connecting memory and IO listeners, initializing a xen bus and registering backends. Moved this common xen code to a new function xen_register_ioreq() which can be used by both x86 and ARM machines. Following functions are moved to hw/xen/xen-hvm-common.c: xen_vcpu_eport(), xen_vcpu_ioreq(), xen_ram_alloc(), xen_set_memory(), xen_region_add(), xen_region_del(), xen_io_add(), xen_io_del(), xen_device_realize(), xen_device_unrealize(), cpu_get_ioreq_from_shared_memory(), cpu_get_ioreq(), do_inp(), do_outp(), rw_phys_req_item(), read_phys_req_item(), write_phys_req_item(), cpu_ioreq_pio(), cpu_ioreq_move(), cpu_ioreq_config(), handle_ioreq(), handle_buffered_iopage(), handle_buffered_io(), cpu_handle_ioreq(), xen_main_loop_prepare(), xen_hvm_change_state_handler(), xen_exit_notifier(), xen_map_ioreq_server(), destroy_hvm_domain() and xen_shutdown_fatal_error() 3. Removed static type from below functions: 1. xen_region_add() 2. xen_region_del() 3. xen_io_add() 4. xen_io_del() 5. xen_device_realize() 6. xen_device_unrealize() 7. xen_hvm_change_state_handler() 8. cpu_ioreq_pio() 9. xen_exit_notifier() 4. Replace TARGET_PAGE_SIZE with XC_PAGE_SIZE to match the page side with Xen. Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com> Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Diffstat (limited to 'hw/i386')
-rw-r--r--hw/i386/xen/trace-events14
-rw-r--r--hw/i386/xen/xen-hvm.c1016
2 files changed, 63 insertions, 967 deletions
diff --git a/hw/i386/xen/trace-events b/hw/i386/xen/trace-events
index a0c89d91c4..5d0a8d6dcf 100644
--- a/hw/i386/xen/trace-events
+++ b/hw/i386/xen/trace-events
@@ -7,17 +7,3 @@ xen_platform_log(char *s) "xen platform: %s"
xen_pv_mmio_read(uint64_t addr) "WARNING: read from Xen PV Device MMIO space (address 0x%"PRIx64")"
xen_pv_mmio_write(uint64_t addr) "WARNING: write to Xen PV Device MMIO space (address 0x%"PRIx64")"
-# xen-hvm.c
-xen_ram_alloc(unsigned long ram_addr, unsigned long size) "requested: 0x%lx, size 0x%lx"
-xen_client_set_memory(uint64_t start_addr, unsigned long size, bool log_dirty) "0x%"PRIx64" size 0x%lx, log_dirty %i"
-handle_ioreq(void *req, uint32_t type, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p type=%d dir=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
-handle_ioreq_read(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p read type=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
-handle_ioreq_write(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p write type=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
-cpu_ioreq_pio(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p pio dir=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
-cpu_ioreq_pio_read_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio read reg data=0x%"PRIx64" port=0x%"PRIx64" size=%d"
-cpu_ioreq_pio_write_reg(void *req, uint64_t data, uint64_t addr, uint32_t size) "I/O=%p pio write reg data=0x%"PRIx64" port=0x%"PRIx64" size=%d"
-cpu_ioreq_move(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p copy dir=%d df=%d ptr=%d port=0x%"PRIx64" data=0x%"PRIx64" count=%d size=%d"
-xen_map_resource_ioreq(uint32_t id, void *addr) "id: %u addr: %p"
-cpu_ioreq_config_read(void *req, uint32_t sbdf, uint32_t reg, uint32_t size, uint32_t data) "I/O=%p sbdf=0x%x reg=%u size=%u data=0x%x"
-cpu_ioreq_config_write(void *req, uint32_t sbdf, uint32_t reg, uint32_t size, uint32_t data) "I/O=%p sbdf=0x%x reg=%u size=%u data=0x%x"
-
diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
index 01bf947f1c..5dc5e80535 100644
--- a/hw/i386/xen/xen-hvm.c
+++ b/hw/i386/xen/xen-hvm.c
@@ -10,43 +10,21 @@
#include "qemu/osdep.h"
#include "qemu/units.h"
+#include "qapi/error.h"
+#include "qapi/qapi-commands-migration.h"
+#include "trace.h"
-#include "cpu.h"
-#include "hw/pci/pci.h"
-#include "hw/pci/pci_host.h"
#include "hw/i386/pc.h"
#include "hw/irq.h"
-#include "hw/hw.h"
#include "hw/i386/apic-msidef.h"
-#include "hw/xen/xen_native.h"
-#include "hw/xen/xen-legacy-backend.h"
-#include "hw/xen/xen-bus.h"
#include "hw/xen/xen-x86.h"
-#include "qapi/error.h"
-#include "qapi/qapi-commands-migration.h"
-#include "qemu/error-report.h"
-#include "qemu/main-loop.h"
#include "qemu/range.h"
-#include "sysemu/runstate.h"
-#include "sysemu/sysemu.h"
-#include "sysemu/xen.h"
-#include "sysemu/xen-mapcache.h"
-#include "trace.h"
-#include <xen/hvm/ioreq.h>
+#include "hw/xen/xen-hvm-common.h"
+#include "hw/xen/arch_hvm.h"
#include <xen/hvm/e820.h>
-//#define DEBUG_XEN_HVM
-
-#ifdef DEBUG_XEN_HVM
-#define DPRINTF(fmt, ...) \
- do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) \
- do { } while (0)
-#endif
-
-static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi;
+static MemoryRegion ram_640k, ram_lo, ram_hi;
static MemoryRegion *framebuffer;
static bool xen_in_migration;
@@ -74,27 +52,8 @@ struct shared_vmport_iopage {
};
typedef struct shared_vmport_iopage shared_vmport_iopage_t;
#endif
-static shared_vmport_iopage_t *shared_vmport_page;
-static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
-{
- return shared_page->vcpu_ioreq[i].vp_eport;
-}
-static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
-{
- return &shared_page->vcpu_ioreq[vcpu];
-}
-
-#define BUFFER_IO_MAX_DELAY 100
-
-typedef struct XenPhysmap {
- hwaddr start_addr;
- ram_addr_t size;
- const char *name;
- hwaddr phys_offset;
-
- QLIST_ENTRY(XenPhysmap) list;
-} XenPhysmap;
+static shared_vmport_iopage_t *shared_vmport_page;
static QLIST_HEAD(, XenPhysmap) xen_physmap;
static const XenPhysmap *log_for_dirtybit;
@@ -103,38 +62,6 @@ static unsigned long *dirty_bitmap;
static Notifier suspend;
static Notifier wakeup;
-typedef struct XenPciDevice {
- PCIDevice *pci_dev;
- uint32_t sbdf;
- QLIST_ENTRY(XenPciDevice) entry;
-} XenPciDevice;
-
-typedef struct XenIOState {
- ioservid_t ioservid;
- shared_iopage_t *shared_page;
- buffered_iopage_t *buffered_io_page;
- xenforeignmemory_resource_handle *fres;
- QEMUTimer *buffered_io_timer;
- CPUState **cpu_by_vcpu_id;
- /* the evtchn port for polling the notification, */
- evtchn_port_t *ioreq_local_port;
- /* evtchn remote and local ports for buffered io */
- evtchn_port_t bufioreq_remote_port;
- evtchn_port_t bufioreq_local_port;
- /* the evtchn fd for polling */
- xenevtchn_handle *xce_handle;
- /* which vcpu we are serving */
- int send_vcpu;
-
- struct xs_handle *xenstore;
- MemoryListener memory_listener;
- MemoryListener io_listener;
- QLIST_HEAD(, XenPciDevice) dev_list;
- DeviceListener device_listener;
-
- Notifier exit;
-} XenIOState;
-
/* Xen specific function for piix pci */
int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
@@ -247,42 +174,6 @@ static void xen_ram_init(PCMachineState *pcms,
}
}
-void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
- Error **errp)
-{
- unsigned long nr_pfn;
- xen_pfn_t *pfn_list;
- int i;
-
- if (runstate_check(RUN_STATE_INMIGRATE)) {
- /* RAM already populated in Xen */
- fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT
- " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n",
- __func__, size, ram_addr);
- return;
- }
-
- if (mr == &ram_memory) {
- return;
- }
-
- trace_xen_ram_alloc(ram_addr, size);
-
- nr_pfn = size >> TARGET_PAGE_BITS;
- pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
-
- for (i = 0; i < nr_pfn; i++) {
- pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
- }
-
- if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0, pfn_list)) {
- error_setg(errp, "xen: failed to populate ram at " RAM_ADDR_FMT,
- ram_addr);
- }
-
- g_free(pfn_list);
-}
-
static XenPhysmap *get_physmapping(hwaddr start_addr, ram_addr_t size)
{
XenPhysmap *physmap = NULL;
@@ -472,144 +363,6 @@ static int xen_remove_from_physmap(XenIOState *state,
return 0;
}
-static void xen_set_memory(struct MemoryListener *listener,
- MemoryRegionSection *section,
- bool add)
-{
- XenIOState *state = container_of(listener, XenIOState, memory_listener);
- hwaddr start_addr = section->offset_within_address_space;
- ram_addr_t size = int128_get64(section->size);
- bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA);
- hvmmem_type_t mem_type;
-
- if (section->mr == &ram_memory) {
- return;
- } else {
- if (add) {
- xen_map_memory_section(xen_domid, state->ioservid,
- section);
- } else {
- xen_unmap_memory_section(xen_domid, state->ioservid,
- section);
- }
- }
-
- if (!memory_region_is_ram(section->mr)) {
- return;
- }
-
- if (log_dirty != add) {
- return;
- }
-
- trace_xen_client_set_memory(start_addr, size, log_dirty);
-
- start_addr &= TARGET_PAGE_MASK;
- size = TARGET_PAGE_ALIGN(size);
-
- if (add) {
- if (!memory_region_is_rom(section->mr)) {
- xen_add_to_physmap(state, start_addr, size,
- section->mr, section->offset_within_region);
- } else {
- mem_type = HVMMEM_ram_ro;
- if (xen_set_mem_type(xen_domid, mem_type,
- start_addr >> TARGET_PAGE_BITS,
- size >> TARGET_PAGE_BITS)) {
- DPRINTF("xen_set_mem_type error, addr: "HWADDR_FMT_plx"\n",
- start_addr);
- }
- }
- } else {
- if (xen_remove_from_physmap(state, start_addr, size) < 0) {
- DPRINTF("physmapping does not exist at "HWADDR_FMT_plx"\n", start_addr);
- }
- }
-}
-
-static void xen_region_add(MemoryListener *listener,
- MemoryRegionSection *section)
-{
- memory_region_ref(section->mr);
- xen_set_memory(listener, section, true);
-}
-
-static void xen_region_del(MemoryListener *listener,
- MemoryRegionSection *section)
-{
- xen_set_memory(listener, section, false);
- memory_region_unref(section->mr);
-}
-
-static void xen_io_add(MemoryListener *listener,
- MemoryRegionSection *section)
-{
- XenIOState *state = container_of(listener, XenIOState, io_listener);
- MemoryRegion *mr = section->mr;
-
- if (mr->ops == &unassigned_io_ops) {
- return;
- }
-
- memory_region_ref(mr);
-
- xen_map_io_section(xen_domid, state->ioservid, section);
-}
-
-static void xen_io_del(MemoryListener *listener,
- MemoryRegionSection *section)
-{
- XenIOState *state = container_of(listener, XenIOState, io_listener);
- MemoryRegion *mr = section->mr;
-
- if (mr->ops == &unassigned_io_ops) {
- return;
- }
-
- xen_unmap_io_section(xen_domid, state->ioservid, section);
-
- memory_region_unref(mr);
-}
-
-static void xen_device_realize(DeviceListener *listener,
- DeviceState *dev)
-{
- XenIOState *state = container_of(listener, XenIOState, device_listener);
-
- if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
- PCIDevice *pci_dev = PCI_DEVICE(dev);
- XenPciDevice *xendev = g_new(XenPciDevice, 1);
-
- xendev->pci_dev = pci_dev;
- xendev->sbdf = PCI_BUILD_BDF(pci_dev_bus_num(pci_dev),
- pci_dev->devfn);
- QLIST_INSERT_HEAD(&state->dev_list, xendev, entry);
-
- xen_map_pcidev(xen_domid, state->ioservid, pci_dev);
- }
-}
-
-static void xen_device_unrealize(DeviceListener *listener,
- DeviceState *dev)
-{
- XenIOState *state = container_of(listener, XenIOState, device_listener);
-
- if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
- PCIDevice *pci_dev = PCI_DEVICE(dev);
- XenPciDevice *xendev, *next;
-
- xen_unmap_pcidev(xen_domid, state->ioservid, pci_dev);
-
- QLIST_FOREACH_SAFE(xendev, &state->dev_list, entry, next) {
- if (xendev->pci_dev == pci_dev) {
- QLIST_REMOVE(xendev, entry);
- g_free(xendev);
- break;
- }
- }
- }
-}
-
static void xen_sync_dirty_bitmap(XenIOState *state,
hwaddr start_addr,
ram_addr_t size)
@@ -717,277 +470,6 @@ static MemoryListener xen_memory_listener = {
.priority = 10,
};
-static MemoryListener xen_io_listener = {
- .name = "xen-io",
- .region_add = xen_io_add,
- .region_del = xen_io_del,
- .priority = 10,
-};
-
-static DeviceListener xen_device_listener = {
- .realize = xen_device_realize,
- .unrealize = xen_device_unrealize,
-};
-
-/* get the ioreq packets from share mem */
-static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu)
-{
- ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu);
-
- if (req->state != STATE_IOREQ_READY) {
- DPRINTF("I/O request not ready: "
- "%x, ptr: %x, port: %"PRIx64", "
- "data: %"PRIx64", count: %u, size: %u\n",
- req->state, req->data_is_ptr, req->addr,
- req->data, req->count, req->size);
- return NULL;
- }
-
- xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
-
- req->state = STATE_IOREQ_INPROCESS;
- return req;
-}
-
-/* use poll to get the port notification */
-/* ioreq_vec--out,the */
-/* retval--the number of ioreq packet */
-static ioreq_t *cpu_get_ioreq(XenIOState *state)
-{
- MachineState *ms = MACHINE(qdev_get_machine());
- unsigned int max_cpus = ms->smp.max_cpus;
- int i;
- evtchn_port_t port;
-
- port = qemu_xen_evtchn_pending(state->xce_handle);
- if (port == state->bufioreq_local_port) {
- timer_mod(state->buffered_io_timer,
- BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
- return NULL;
- }
-
- if (port != -1) {
- for (i = 0; i < max_cpus; i++) {
- if (state->ioreq_local_port[i] == port) {
- break;
- }
- }
-
- if (i == max_cpus) {
- hw_error("Fatal error while trying to get io event!\n");
- }
-
- /* unmask the wanted port again */
- qemu_xen_evtchn_unmask(state->xce_handle, port);
-
- /* get the io packet from shared memory */
- state->send_vcpu = i;
- return cpu_get_ioreq_from_shared_memory(state, i);
- }
-
- /* read error or read nothing */
- return NULL;
-}
-
-static uint32_t do_inp(uint32_t addr, unsigned long size)
-{
- switch (size) {
- case 1:
- return cpu_inb(addr);
- case 2:
- return cpu_inw(addr);
- case 4:
- return cpu_inl(addr);
- default:
- hw_error("inp: bad size: %04x %lx", addr, size);
- }
-}
-
-static void do_outp(uint32_t addr,
- unsigned long size, uint32_t val)
-{
- switch (size) {
- case 1:
- return cpu_outb(addr, val);
- case 2:
- return cpu_outw(addr, val);
- case 4:
- return cpu_outl(addr, val);
- default:
- hw_error("outp: bad size: %04x %lx", addr, size);
- }
-}
-
-/*
- * Helper functions which read/write an object from/to physical guest
- * memory, as part of the implementation of an ioreq.
- *
- * Equivalent to
- * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i,
- * val, req->size, 0/1)
- * except without the integer overflow problems.
- */
-static void rw_phys_req_item(hwaddr addr,
- ioreq_t *req, uint32_t i, void *val, int rw)
-{
- /* Do everything unsigned so overflow just results in a truncated result
- * and accesses to undesired parts of guest memory, which is up
- * to the guest */
- hwaddr offset = (hwaddr)req->size * i;
- if (req->df) {
- addr -= offset;
- } else {
- addr += offset;
- }
- cpu_physical_memory_rw(addr, val, req->size, rw);
-}
-
-static inline void read_phys_req_item(hwaddr addr,
- ioreq_t *req, uint32_t i, void *val)
-{
- rw_phys_req_item(addr, req, i, val, 0);
-}
-static inline void write_phys_req_item(hwaddr addr,
- ioreq_t *req, uint32_t i, void *val)
-{
- rw_phys_req_item(addr, req, i, val, 1);
-}
-
-
-static void cpu_ioreq_pio(ioreq_t *req)
-{
- uint32_t i;
-
- trace_cpu_ioreq_pio(req, req->dir, req->df, req->data_is_ptr, req->addr,
- req->data, req->count, req->size);
-
- if (req->size > sizeof(uint32_t)) {
- hw_error("PIO: bad size (%u)", req->size);
- }
-
- if (req->dir == IOREQ_READ) {
- if (!req->data_is_ptr) {
- req->data = do_inp(req->addr, req->size);
- trace_cpu_ioreq_pio_read_reg(req, req->data, req->addr,
- req->size);
- } else {
- uint32_t tmp;
-
- for (i = 0; i < req->count; i++) {
- tmp = do_inp(req->addr, req->size);
- write_phys_req_item(req->data, req, i, &tmp);
- }
- }
- } else if (req->dir == IOREQ_WRITE) {
- if (!req->data_is_ptr) {
- trace_cpu_ioreq_pio_write_reg(req, req->data, req->addr,
- req->size);
- do_outp(req->addr, req->size, req->data);
- } else {
- for (i = 0; i < req->count; i++) {
- uint32_t tmp = 0;
-
- read_phys_req_item(req->data, req, i, &tmp);
- do_outp(req->addr, req->size, tmp);
- }
- }
- }
-}
-
-static void cpu_ioreq_move(ioreq_t *req)
-{
- uint32_t i;
-
- trace_cpu_ioreq_move(req, req->dir, req->df, req->data_is_ptr, req->addr,
- req->data, req->count, req->size);
-
- if (req->size > sizeof(req->data)) {
- hw_error("MMIO: bad size (%u)", req->size);
- }
-
- if (!req->data_is_ptr) {
- if (req->dir == IOREQ_READ) {
- for (i = 0; i < req->count; i++) {
- read_phys_req_item(req->addr, req, i, &req->data);
- }
- } else if (req->dir == IOREQ_WRITE) {
- for (i = 0; i < req->count; i++) {
- write_phys_req_item(req->addr, req, i, &req->data);
- }
- }
- } else {
- uint64_t tmp;
-
- if (req->dir == IOREQ_READ) {
- for (i = 0; i < req->count; i++) {
- read_phys_req_item(req->addr, req, i, &tmp);
- write_phys_req_item(req->data, req, i, &tmp);
- }
- } else if (req->dir == IOREQ_WRITE) {
- for (i = 0; i < req->count; i++) {
- read_phys_req_item(req->data, req, i, &tmp);
- write_phys_req_item(req->addr, req, i, &tmp);
- }
- }
- }
-}
-
-static void cpu_ioreq_config(XenIOState *state, ioreq_t *req)
-{
- uint32_t sbdf = req->addr >> 32;
- uint32_t reg = req->addr;
- XenPciDevice *xendev;
-
- if (req->size != sizeof(uint8_t) && req->size != sizeof(uint16_t) &&
- req->size != sizeof(uint32_t)) {
- hw_error("PCI config access: bad size (%u)", req->size);
- }
-
- if (req->count != 1) {
- hw_error("PCI config access: bad count (%u)", req->count);
- }
-
- QLIST_FOREACH(xendev, &state->dev_list, entry) {
- if (xendev->sbdf != sbdf) {
- continue;
- }
-
- if (!req->data_is_ptr) {
- if (req->dir == IOREQ_READ) {
- req->data = pci_host_config_read_common(
- xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
- req->size);
- trace_cpu_ioreq_config_read(req, xendev->sbdf, reg,
- req->size, req->data);
- } else if (req->dir == IOREQ_WRITE) {
- trace_cpu_ioreq_config_write(req, xendev->sbdf, reg,
- req->size, req->data);
- pci_host_config_write_common(
- xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
- req->data, req->size);
- }
- } else {
- uint32_t tmp;
-
- if (req->dir == IOREQ_READ) {
- tmp = pci_host_config_read_common(
- xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
- req->size);
- trace_cpu_ioreq_config_read(req, xendev->sbdf, reg,
- req->size, tmp);
- write_phys_req_item(req->data, req, 0, &tmp);
- } else if (req->dir == IOREQ_WRITE) {
- read_phys_req_item(req->data, req, 0, &tmp);
- trace_cpu_ioreq_config_write(req, xendev->sbdf, reg,
- req->size, tmp);
- pci_host_config_write_common(
- xendev->pci_dev, reg, PCI_CONFIG_SPACE_SIZE,
- tmp, req->size);
- }
- }
- }
-}
-
static void regs_to_cpu(vmware_regs_t *vmport_regs, ioreq_t *req)
{
X86CPU *cpu;
@@ -1031,226 +513,6 @@ static void handle_vmport_ioreq(XenIOState *state, ioreq_t *req)
current_cpu = NULL;
}
-static void handle_ioreq(XenIOState *state, ioreq_t *req)
-{
- trace_handle_ioreq(req, req->type, req->dir, req->df, req->data_is_ptr,
- req->addr, req->data, req->count, req->size);
-
- if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
- (req->size < sizeof (target_ulong))) {
- req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
- }
-
- if (req->dir == IOREQ_WRITE)
- trace_handle_ioreq_write(req, req->type, req->df, req->data_is_ptr,
- req->addr, req->data, req->count, req->size);
-
- switch (req->type) {
- case IOREQ_TYPE_PIO:
- cpu_ioreq_pio(req);
- break;
- case IOREQ_TYPE_COPY:
- cpu_ioreq_move(req);
- break;
- case IOREQ_TYPE_VMWARE_PORT:
- handle_vmport_ioreq(state, req);
- break;
- case IOREQ_TYPE_TIMEOFFSET:
- break;
- case IOREQ_TYPE_INVALIDATE:
- xen_invalidate_map_cache();
- break;
- case IOREQ_TYPE_PCI_CONFIG:
- cpu_ioreq_config(state, req);
- break;
- default:
- hw_error("Invalid ioreq type 0x%x\n", req->type);
- }
- if (req->dir == IOREQ_READ) {
- trace_handle_ioreq_read(req, req->type, req->df, req->data_is_ptr,
- req->addr, req->data, req->count, req->size);
- }
-}
-
-static bool handle_buffered_iopage(XenIOState *state)
-{
- buffered_iopage_t *buf_page = state->buffered_io_page;
- buf_ioreq_t *buf_req = NULL;
- bool handled_ioreq = false;
- ioreq_t req;
- int qw;
-
- if (!buf_page) {
- return 0;
- }
-
- memset(&req, 0x00, sizeof(req));
- req.state = STATE_IOREQ_READY;
- req.count = 1;
- req.dir = IOREQ_WRITE;
-
- for (;;) {
- uint32_t rdptr = buf_page->read_pointer, wrptr;
-
- xen_rmb();
- wrptr = buf_page->write_pointer;
- xen_rmb();
- if (rdptr != buf_page->read_pointer) {
- continue;
- }
- if (rdptr == wrptr) {
- break;
- }
- buf_req = &buf_page->buf_ioreq[rdptr % IOREQ_BUFFER_SLOT_NUM];
- req.size = 1U << buf_req->size;
- req.addr = buf_req->addr;
- req.data = buf_req->data;
- req.type = buf_req->type;
- xen_rmb();
- qw = (req.size == 8);
- if (qw) {
- if (rdptr + 1 == wrptr) {
- hw_error("Incomplete quad word buffered ioreq");
- }
- buf_req = &buf_page->buf_ioreq[(rdptr + 1) %
- IOREQ_BUFFER_SLOT_NUM];
- req.data |= ((uint64_t)buf_req->data) << 32;
- xen_rmb();
- }
-
- handle_ioreq(state, &req);
-
- /* Only req.data may get updated by handle_ioreq(), albeit even that
- * should not happen as such data would never make it to the guest (we
- * can only usefully see writes here after all).
- */
- assert(req.state == STATE_IOREQ_READY);
- assert(req.count == 1);
- assert(req.dir == IOREQ_WRITE);
- assert(!req.data_is_ptr);
-
- qatomic_add(&buf_page->read_pointer, qw + 1);
- handled_ioreq = true;
- }
-
- return handled_ioreq;
-}
-
-static void handle_buffered_io(void *opaque)
-{
- XenIOState *state = opaque;
-
- if (handle_buffered_iopage(state)) {
- timer_mod(state->buffered_io_timer,
- BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
- } else {
- timer_del(state->buffered_io_timer);
- qemu_xen_evtchn_unmask(state->xce_handle, state->bufioreq_local_port);
- }
-}
-
-static void cpu_handle_ioreq(void *opaque)
-{
- XenIOState *state = opaque;
- ioreq_t *req = cpu_get_ioreq(state);
-
- handle_buffered_iopage(state);
- if (req) {
- ioreq_t copy = *req;
-
- xen_rmb();
- handle_ioreq(state, &copy);
- req->data = copy.data;
-
- if (req->state != STATE_IOREQ_INPROCESS) {
- fprintf(stderr, "Badness in I/O request ... not in service?!: "
- "%x, ptr: %x, port: %"PRIx64", "
- "data: %"PRIx64", count: %u, size: %u, type: %u\n",
- req->state, req->data_is_ptr, req->addr,
- req->data, req->count, req->size, req->type);
- destroy_hvm_domain(false);
- return;
- }
-
- xen_wmb(); /* Update ioreq contents /then/ update state. */
-
- /*
- * We do this before we send the response so that the tools
- * have the opportunity to pick up on the reset before the
- * guest resumes and does a hlt with interrupts disabled which
- * causes Xen to powerdown the domain.
- */
- if (runstate_is_running()) {
- ShutdownCause request;
-
- if (qemu_shutdown_requested_get()) {
- destroy_hvm_domain(false);
- }
- request = qemu_reset_requested_get();
- if (request) {
- qemu_system_reset(request);
- destroy_hvm_domain(true);
- }
- }
-
- req->state = STATE_IORESP_READY;
- qemu_xen_evtchn_notify(state->xce_handle,
- state->ioreq_local_port[state->send_vcpu]);
- }
-}
-
-static void xen_main_loop_prepare(XenIOState *state)
-{
- int evtchn_fd = -1;
-
- if (state->xce_handle != NULL) {
- evtchn_fd = qemu_xen_evtchn_fd(state->xce_handle);
- }
-
- state->buffered_io_timer = timer_new_ms(QEMU_CLOCK_REALTIME, handle_buffered_io,
- state);
-
- if (evtchn_fd != -1) {
- CPUState *cpu_state;
-
- DPRINTF("%s: Init cpu_by_vcpu_id\n", __func__);
- CPU_FOREACH(cpu_state) {
- DPRINTF("%s: cpu_by_vcpu_id[%d]=%p\n",
- __func__, cpu_state->cpu_index, cpu_state);
- state->cpu_by_vcpu_id[cpu_state->cpu_index] = cpu_state;
- }
- qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
- }
-}
-
-
-static void xen_hvm_change_state_handler(void *opaque, bool running,
- RunState rstate)
-{
- XenIOState *state = opaque;
-
- if (running) {
- xen_main_loop_prepare(state);
- }
-
- xen_set_ioreq_server_state(xen_domid,
- state->ioservid,
- (rstate == RUN_STATE_RUNNING));
-}
-
-static void xen_exit_notifier(Notifier *n, void *data)
-{
- XenIOState *state = container_of(n, XenIOState, exit);
-
- xen_destroy_ioreq_server(xen_domid, state->ioservid);
- if (state->fres != NULL) {
- xenforeignmemory_unmap_resource(xen_fmem, state->fres);
- }
-
- qemu_xen_evtchn_close(state->xce_handle);
- xs_daemon_close(state->xenstore);
-}
-
#ifdef XEN_COMPAT_PHYSMAP
static void xen_read_physmap(XenIOState *state)
{
@@ -1310,175 +572,17 @@ static void xen_wakeup_notifier(Notifier *notifier, void *data)
xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
}
-static int xen_map_ioreq_server(XenIOState *state)
-{
- void *addr = NULL;
- xen_pfn_t ioreq_pfn;
- xen_pfn_t bufioreq_pfn;
- evtchn_port_t bufioreq_evtchn;
- int rc;
-
- /*
- * Attempt to map using the resource API and fall back to normal
- * foreign mapping if this is not supported.
- */
- QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_bufioreq != 0);
- QEMU_BUILD_BUG_ON(XENMEM_resource_ioreq_server_frame_ioreq(0) != 1);
- state->fres = xenforeignmemory_map_resource(xen_fmem, xen_domid,
- XENMEM_resource_ioreq_server,
- state->ioservid, 0, 2,
- &addr,
- PROT_READ | PROT_WRITE, 0);
- if (state->fres != NULL) {
- trace_xen_map_resource_ioreq(state->ioservid, addr);
- state->buffered_io_page = addr;
- state->shared_page = addr + TARGET_PAGE_SIZE;
- } else if (errno != EOPNOTSUPP) {
- error_report("failed to map ioreq server resources: error %d handle=%p",
- errno, xen_xc);
- return -1;
- }
-
- rc = xen_get_ioreq_server_info(xen_domid, state->ioservid,
- (state->shared_page == NULL) ?
- &ioreq_pfn : NULL,
- (state->buffered_io_page == NULL) ?
- &bufioreq_pfn : NULL,
- &bufioreq_evtchn);
- if (rc < 0) {
- error_report("failed to get ioreq server info: error %d handle=%p",
- errno, xen_xc);
- return rc;
- }
-
- if (state->shared_page == NULL) {
- DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
-
- state->shared_page = xenforeignmemory_map(xen_fmem, xen_domid,
- PROT_READ | PROT_WRITE,
- 1, &ioreq_pfn, NULL);
- if (state->shared_page == NULL) {
- error_report("map shared IO page returned error %d handle=%p",
- errno, xen_xc);
- }
- }
-
- if (state->buffered_io_page == NULL) {
- DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn);
-
- state->buffered_io_page = xenforeignmemory_map(xen_fmem, xen_domid,
- PROT_READ | PROT_WRITE,
- 1, &bufioreq_pfn,
- NULL);
- if (state->buffered_io_page == NULL) {
- error_report("map buffered IO page returned error %d", errno);
- return -1;
- }
- }
-
- if (state->shared_page == NULL || state->buffered_io_page == NULL) {
- return -1;
- }
-
- DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn);
-
- state->bufioreq_remote_port = bufioreq_evtchn;
-
- return 0;
-}
-
void xen_hvm_init_pc(PCMachineState *pcms, MemoryRegion **ram_memory)
{
MachineState *ms = MACHINE(pcms);
unsigned int max_cpus = ms->smp.max_cpus;
- int i, rc;
+ int rc;
xen_pfn_t ioreq_pfn;
XenIOState *state;
- setup_xen_backend_ops();
-
state = g_new0(XenIOState, 1);
- state->xce_handle = qemu_xen_evtchn_open();
- if (state->xce_handle == NULL) {
- perror("xen: event channel open");
- goto err;
- }
-
- state->xenstore = xs_daemon_open();
- if (state->xenstore == NULL) {
- perror("xen: xenstore open");
- goto err;
- }
-
- xen_create_ioreq_server(xen_domid, &state->ioservid);
-
- state->exit.notify = xen_exit_notifier;
- qemu_add_exit_notifier(&state->exit);
-
- /*
- * Register wake-up support in QMP query-current-machine API
- */
- qemu_register_wakeup_support();
-
- rc = xen_map_ioreq_server(state);
- if (rc < 0) {
- goto err;
- }
-
- /* Note: cpus is empty at this point in init */
- state->cpu_by_vcpu_id = g_new0(CPUState *, max_cpus);
-
- rc = xen_set_ioreq_server_state(xen_domid, state->ioservid, true);
- if (rc < 0) {
- error_report("failed to enable ioreq server info: error %d handle=%p",
- errno, xen_xc);
- goto err;
- }
-
- state->ioreq_local_port = g_new0(evtchn_port_t, max_cpus);
-
- /* FIXME: how about if we overflow the page here? */
- for (i = 0; i < max_cpus; i++) {
- rc = qemu_xen_evtchn_bind_interdomain(state->xce_handle, xen_domid,
- xen_vcpu_eport(state->shared_page,
- i));
- if (rc == -1) {
- error_report("shared evtchn %d bind error %d", i, errno);
- goto err;
- }
- state->ioreq_local_port[i] = rc;
- }
-
- rc = qemu_xen_evtchn_bind_interdomain(state->xce_handle, xen_domid,
- state->bufioreq_remote_port);
- if (rc == -1) {
- error_report("buffered evtchn bind error %d", errno);
- goto err;
- }
- state->bufioreq_local_port = rc;
-
- /* Init RAM management */
-#ifdef XEN_COMPAT_PHYSMAP
- xen_map_cache_init(xen_phys_offset_to_gaddr, state);
-#else
- xen_map_cache_init(NULL, state);
-#endif
-
- qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
-
- state->memory_listener = xen_memory_listener;
- memory_listener_register(&state->memory_listener, &address_space_memory);
-
- state->io_listener = xen_io_listener;
- memory_listener_register(&state->io_listener, &address_space_io);
-
- state->device_listener = xen_device_listener;
- QLIST_INIT(&state->dev_list);
- device_listener_register(&state->device_listener);
-
- xen_bus_init();
- xen_be_init();
+ xen_register_ioreq(state, max_cpus, xen_memory_listener);
QLIST_INIT(&xen_physmap);
xen_read_physmap(state);
@@ -1518,59 +622,11 @@ err:
exit(1);
}
-void destroy_hvm_domain(bool reboot)
-{
- xc_interface *xc_handle;
- int sts;
- int rc;
-
- unsigned int reason = reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff;
-
- if (xen_dmod) {
- rc = xendevicemodel_shutdown(xen_dmod, xen_domid, reason);
- if (!rc) {
- return;
- }
- if (errno != ENOTTY /* old Xen */) {
- perror("xendevicemodel_shutdown failed");
- }
- /* well, try the old thing then */
- }
-
- xc_handle = xc_interface_open(0, 0, 0);
- if (xc_handle == NULL) {
- fprintf(stderr, "Cannot acquire xenctrl handle\n");
- } else {
- sts = xc_domain_shutdown(xc_handle, xen_domid, reason);
- if (sts != 0) {
- fprintf(stderr, "xc_domain_shutdown failed to issue %s, "
- "sts %d, %s\n", reboot ? "reboot" : "poweroff",
- sts, strerror(errno));
- } else {
- fprintf(stderr, "Issued domain %d %s\n", xen_domid,
- reboot ? "reboot" : "poweroff");
- }
- xc_interface_close(xc_handle);
- }
-}
-
void xen_register_framebuffer(MemoryRegion *mr)
{
framebuffer = mr;
}
-void xen_shutdown_fatal_error(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- vfprintf(stderr, fmt, ap);
- va_end(ap);
- fprintf(stderr, "Will destroy the domain.\n");
- /* destroy the domain */
- qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_ERROR);
-}
-
void xen_hvm_modified_memory(ram_addr_t start, ram_addr_t length)
{
if (unlikely(xen_in_migration)) {
@@ -1602,3 +658,57 @@ void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
memory_global_dirty_log_stop(GLOBAL_DIRTY_MIGRATION);
}
}
+
+void arch_xen_set_memory(XenIOState *state, MemoryRegionSection *section,
+ bool add)
+{
+ hwaddr start_addr = section->offset_within_address_space;
+ ram_addr_t size = int128_get64(section->size);
+ bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA);
+ hvmmem_type_t mem_type;
+
+ if (!memory_region_is_ram(section->mr)) {
+ return;
+ }
+
+ if (log_dirty != add) {
+ return;
+ }
+
+ trace_xen_client_set_memory(start_addr, size, log_dirty);
+
+ start_addr &= TARGET_PAGE_MASK;
+ size = TARGET_PAGE_ALIGN(size);
+
+ if (add) {
+ if (!memory_region_is_rom(section->mr)) {
+ xen_add_to_physmap(state, start_addr, size,
+ section->mr, section->offset_within_region);
+ } else {
+ mem_type = HVMMEM_ram_ro;
+ if (xen_set_mem_type(xen_domid, mem_type,
+ start_addr >> TARGET_PAGE_BITS,
+ size >> TARGET_PAGE_BITS)) {
+ DPRINTF("xen_set_mem_type error, addr: "HWADDR_FMT_plx"\n",
+ start_addr);
+ }
+ }
+ } else {
+ if (xen_remove_from_physmap(state, start_addr, size) < 0) {
+ DPRINTF("physmapping does not exist at "HWADDR_FMT_plx"\n", start_addr);
+ }
+ }
+}
+
+void arch_handle_ioreq(XenIOState *state, ioreq_t *req)
+{
+ switch (req->type) {
+ case IOREQ_TYPE_VMWARE_PORT:
+ handle_vmport_ioreq(state, req);
+ break;
+ default:
+ hw_error("Invalid ioreq type 0x%x\n", req->type);
+ }
+
+ return;
+}