diff options
| -rwxr-xr-x | configure | 5 | ||||
| -rw-r--r-- | hw/i386/xen/trace-events | 1 | ||||
| -rw-r--r-- | hw/i386/xen/xen-hvm.c | 66 | ||||
| -rw-r--r-- | include/hw/xen/xen_common.h | 16 |
4 files changed, 73 insertions, 15 deletions
@@ -2231,12 +2231,17 @@ EOF #undef XC_WANT_COMPAT_DEVICEMODEL_API #define __XEN_TOOLS__ #include <xendevicemodel.h> +#include <xenforeignmemory.h> int main(void) { xendevicemodel_handle *xd; + xenforeignmemory_handle *xfmem; xd = xendevicemodel_open(0, 0); xendevicemodel_pin_memory_cacheattr(xd, 0, 0, 0, 0); + xfmem = xenforeignmemory_open(0, 0); + xenforeignmemory_map_resource(xfmem, 0, 0, 0, 0, 0, NULL, 0, 0); + return 0; } EOF diff --git a/hw/i386/xen/trace-events b/hw/i386/xen/trace-events index 8dab7bc..38616b6 100644 --- a/hw/i386/xen/trace-events +++ b/hw/i386/xen/trace-events @@ -15,6 +15,7 @@ cpu_ioreq_pio(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr, uint64 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" # xen-mapcache.c xen_map_cache(uint64_t phys_addr) "want 0x%"PRIx64 diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c index 2afab65..54f99ab 100644 --- a/hw/i386/xen/xen-hvm.c +++ b/hw/i386/xen/xen-hvm.c @@ -1237,13 +1237,39 @@ static void xen_wakeup_notifier(Notifier *notifier, void *data) static int xen_map_ioreq_server(XenIOState *state) { + void *addr = NULL; + xenforeignmemory_resource_handle *fres; 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); + fres = xenforeignmemory_map_resource(xen_fmem, xen_domid, + XENMEM_resource_ioreq_server, + state->ioservid, 0, 2, + &addr, + PROT_READ | PROT_WRITE, 0); + if (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, - &ioreq_pfn, &bufioreq_pfn, + (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", @@ -1251,27 +1277,37 @@ static int xen_map_ioreq_server(XenIOState *state) return rc; } - DPRINTF("shared page at pfn %lx\n", ioreq_pfn); - DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn); - DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn); - - 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); - return -1; + 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); + } } - 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); + 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; diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h index bbf207d..93f631e 100644 --- a/include/hw/xen/xen_common.h +++ b/include/hw/xen/xen_common.h @@ -119,6 +119,22 @@ static inline int xendevicemodel_pin_memory_cacheattr( return xc_domain_pin_memory_cacheattr(xen_xc, domid, start, end, type); } +typedef void xenforeignmemory_resource_handle; + +#define XENMEM_resource_ioreq_server 0 + +#define XENMEM_resource_ioreq_server_frame_bufioreq 0 +#define XENMEM_resource_ioreq_server_frame_ioreq(n) (1 + (n)) + +static inline xenforeignmemory_resource_handle *xenforeignmemory_map_resource( + xenforeignmemory_handle *fmem, domid_t domid, unsigned int type, + unsigned int id, unsigned long frame, unsigned long nr_frames, + void **paddr, int prot, int flags) +{ + errno = EOPNOTSUPP; + return NULL; +} + #endif /* CONFIG_XEN_CTRL_INTERFACE_VERSION < 41100 */ #if CONFIG_XEN_CTRL_INTERFACE_VERSION < 41000 |