From ac0487e1d2ae811cd4d035741a109a4ecfb013f1 Mon Sep 17 00:00:00 2001 From: Stefano Stabellini Date: Wed, 6 Jan 2016 16:32:22 +0000 Subject: xenfb.c: avoid expensive loops when prod <= out_cons If the frontend sets out_cons to a value higher than out_prod, it will cause xenfb_handle_events to loop about 2^32 times. Avoid that by using better checks at the beginning of the function. Signed-off-by: Stefano Stabellini Reported-by: Ling Liu --- hw/display/xenfb.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'hw') diff --git a/hw/display/xenfb.c b/hw/display/xenfb.c index 4e2a27a..8eb3046 100644 --- a/hw/display/xenfb.c +++ b/hw/display/xenfb.c @@ -789,8 +789,9 @@ static void xenfb_handle_events(struct XenFB *xenfb) prod = page->out_prod; out_cons = page->out_cons; - if (prod == out_cons) - return; + if (prod - out_cons >= XENFB_OUT_RING_LEN) { + return; + } xen_rmb(); /* ensure we see ring contents up to prod */ for (cons = out_cons; cons != prod; cons++) { union xenfb_out_event *event = &XENFB_OUT_RING_REF(page, cons); -- cgit v1.1 From dced4d2fcb3961358b12ec3a191dd04505f333af Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Thu, 14 Jan 2016 16:09:38 +0100 Subject: xen-hvm: Clean up xen_hvm_init() error handling xen_hvm_init() returns -1 without cleaning up on some errors (harmless long as the caller exit()s on error), dies with hw_error() on others. hw_error() isn't approprate here. Clean up to exit() on all errors. Signed-off-by: Markus Armbruster Reviewed-by: Stefano Stabellini Signed-off-by: Stefano Stabellini --- hw/i386/pc_piix.c | 5 ++--- hw/i386/pc_q35.c | 5 ++--- 2 files changed, 4 insertions(+), 6 deletions(-) (limited to 'hw') diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index df2b824..db0ae9c 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -121,9 +121,8 @@ static void pc_init1(MachineState *machine, pcms->below_4g_mem_size = machine->ram_size; } - if (xen_enabled() && xen_hvm_init(pcms, &ram_memory) != 0) { - fprintf(stderr, "xen hardware virtual machine initialisation failed\n"); - exit(1); + if (xen_enabled()) { + xen_hvm_init(pcms, &ram_memory); } pc_cpus_init(pcms); diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index 412b3cd..abbcbf9 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -111,9 +111,8 @@ static void pc_q35_init(MachineState *machine) pcms->below_4g_mem_size = machine->ram_size; } - if (xen_enabled() && xen_hvm_init(pcms, &ram_memory) != 0) { - fprintf(stderr, "xen hardware virtual machine initialisation failed\n"); - exit(1); + if (xen_enabled()) { + xen_hvm_init(pcms, &ram_memory); } pc_cpus_init(pcms); -- cgit v1.1 From c6b14aed77eeed434bdf3ff6cc0d873252c052ba Mon Sep 17 00:00:00 2001 From: Cao jin Date: Tue, 22 Dec 2015 10:43:16 +0800 Subject: xen-pvdevice: convert to realize() Signed-off-by: Cao jin Reviewed-by: Stefano Stabellini --- hw/i386/xen/xen_pvdevice.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'hw') diff --git a/hw/i386/xen/xen_pvdevice.c b/hw/i386/xen/xen_pvdevice.c index c218947..9abcf25 100644 --- a/hw/i386/xen/xen_pvdevice.c +++ b/hw/i386/xen/xen_pvdevice.c @@ -69,14 +69,16 @@ static const MemoryRegionOps xen_pv_mmio_ops = { .endianness = DEVICE_LITTLE_ENDIAN, }; -static int xen_pv_init(PCIDevice *pci_dev) +static void xen_pv_realize(PCIDevice *pci_dev, Error **errp) { XenPVDevice *d = XEN_PV_DEVICE(pci_dev); uint8_t *pci_conf; /* device-id property must always be supplied */ - if (d->device_id == 0xffff) - return -1; + if (d->device_id == 0xffff) { + error_setg(errp, "Device ID invalid, it must always be supplied"); + return; + } pci_conf = pci_dev->config; @@ -97,8 +99,6 @@ static int xen_pv_init(PCIDevice *pci_dev) pci_register_bar(pci_dev, 1, PCI_BASE_ADDRESS_MEM_PREFETCH, &d->mmio); - - return 0; } static Property xen_pv_props[] = { @@ -114,7 +114,7 @@ static void xen_pv_class_init(ObjectClass *klass, void *data) DeviceClass *dc = DEVICE_CLASS(klass); PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); - k->init = xen_pv_init; + k->realize = xen_pv_realize; k->class_id = PCI_CLASS_SYSTEM_OTHER; dc->desc = "Xen PV Device"; dc->props = xen_pv_props; -- cgit v1.1 From 599d0c45615b7d099d256738a586d0f63bc707e6 Mon Sep 17 00:00:00 2001 From: Cao jin Date: Sun, 17 Jan 2016 20:13:10 +0800 Subject: Change xen_host_pci_sysfs_path() to return void And assert the snprintf() error, because user can do nothing in case of snprintf() fail. Signed-off-by: Cao jin Reviewed-by: Stefano Stabellini Reviewed-by: Eric Blake --- hw/xen/xen-host-pci-device.c | 35 +++++++++++------------------------ 1 file changed, 11 insertions(+), 24 deletions(-) (limited to 'hw') diff --git a/hw/xen/xen-host-pci-device.c b/hw/xen/xen-host-pci-device.c index 7d8a023..9c342e7 100644 --- a/hw/xen/xen-host-pci-device.c +++ b/hw/xen/xen-host-pci-device.c @@ -31,19 +31,14 @@ #define IORESOURCE_PREFETCH 0x00001000 /* No side effects */ #define IORESOURCE_MEM_64 0x00100000 -static int xen_host_pci_sysfs_path(const XenHostPCIDevice *d, - const char *name, char *buf, ssize_t size) +static void xen_host_pci_sysfs_path(const XenHostPCIDevice *d, + const char *name, char *buf, ssize_t size) { int rc; rc = snprintf(buf, size, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/%s", d->domain, d->bus, d->dev, d->func, name); - - if (rc >= size || rc < 0) { - /* The output is truncated, or some other error was encountered */ - return -ENODEV; - } - return 0; + assert(rc >= 0 && rc < size); } @@ -58,10 +53,8 @@ static int xen_host_pci_get_resource(XenHostPCIDevice *d) char *endptr, *s; uint8_t type; - rc = xen_host_pci_sysfs_path(d, "resource", path, sizeof (path)); - if (rc) { - return rc; - } + xen_host_pci_sysfs_path(d, "resource", path, sizeof(path)); + fd = open(path, O_RDONLY); if (fd == -1) { XEN_HOST_PCI_LOG("Error: Can't open %s: %s\n", path, strerror(errno)); @@ -150,10 +143,8 @@ static int xen_host_pci_get_value(XenHostPCIDevice *d, const char *name, unsigned long value; char *endptr; - rc = xen_host_pci_sysfs_path(d, name, path, sizeof (path)); - if (rc) { - return rc; - } + xen_host_pci_sysfs_path(d, name, path, sizeof(path)); + fd = open(path, O_RDONLY); if (fd == -1) { XEN_HOST_PCI_LOG("Error: Can't open %s: %s\n", path, strerror(errno)); @@ -200,21 +191,17 @@ static bool xen_host_pci_dev_is_virtfn(XenHostPCIDevice *d) char path[PATH_MAX]; struct stat buf; - if (xen_host_pci_sysfs_path(d, "physfn", path, sizeof (path))) { - return false; - } + xen_host_pci_sysfs_path(d, "physfn", path, sizeof(path)); + return !stat(path, &buf); } static int xen_host_pci_config_open(XenHostPCIDevice *d) { char path[PATH_MAX]; - int rc; - rc = xen_host_pci_sysfs_path(d, "config", path, sizeof (path)); - if (rc) { - return rc; - } + xen_host_pci_sysfs_path(d, "config", path, sizeof(path)); + d->config_fd = open(path, O_RDWR); if (d->config_fd < 0) { return -errno; -- cgit v1.1 From f524bc3b3da5bd595840fca93d43a9852b8d066f Mon Sep 17 00:00:00 2001 From: Cao jin Date: Sun, 17 Jan 2016 20:13:11 +0800 Subject: Xen: use qemu_strtoul instead of strtol No need to roll our own (with slightly incorrect handling of errno), when we can use the common version. Change signed parsing to unsigned, because what it read are values in PCI config space, which are non-negative. Signed-off-by: Cao jin Reviewed-by: Stefano Stabellini Reviewed-by: Eric Blake --- hw/xen/xen-host-pci-device.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) (limited to 'hw') diff --git a/hw/xen/xen-host-pci-device.c b/hw/xen/xen-host-pci-device.c index 9c342e7..83da9c4 100644 --- a/hw/xen/xen-host-pci-device.c +++ b/hw/xen/xen-host-pci-device.c @@ -141,7 +141,7 @@ static int xen_host_pci_get_value(XenHostPCIDevice *d, const char *name, char buf[XEN_HOST_PCI_GET_VALUE_BUFFER_SIZE]; int fd, rc; unsigned long value; - char *endptr; + const char *endptr; xen_host_pci_sysfs_path(d, name, path, sizeof(path)); @@ -158,13 +158,9 @@ static int xen_host_pci_get_value(XenHostPCIDevice *d, const char *name, } } while (rc < 0); buf[rc] = 0; - value = strtol(buf, &endptr, base); - if (endptr == buf || *endptr != '\n') { - rc = -1; - } else if ((value == LONG_MIN || value == LONG_MAX) && errno == ERANGE) { - rc = -errno; - } else { - rc = 0; + rc = qemu_strtoul(buf, &endptr, base, &value); + if (!rc) { + assert(value <= UINT_MAX); *pvalue = value; } out: -- cgit v1.1 From 376ba75f88681b468caf4f6bcf27cf8a4b17a6d0 Mon Sep 17 00:00:00 2001 From: Cao jin Date: Sun, 17 Jan 2016 20:13:12 +0800 Subject: Add Error **errp for xen_host_pci_device_get() To catch the error message. Also modify the caller Signed-off-by: Cao jin Reviewed-by: Stefano Stabellini Reviewed-by: Eric Blake --- hw/xen/xen-host-pci-device.c | 102 ++++++++++++++++++++++++------------------- hw/xen/xen-host-pci-device.h | 5 ++- hw/xen/xen_pt.c | 13 +++--- 3 files changed, 68 insertions(+), 52 deletions(-) (limited to 'hw') diff --git a/hw/xen/xen-host-pci-device.c b/hw/xen/xen-host-pci-device.c index 83da9c4..3827ca7 100644 --- a/hw/xen/xen-host-pci-device.c +++ b/hw/xen/xen-host-pci-device.c @@ -44,7 +44,7 @@ static void xen_host_pci_sysfs_path(const XenHostPCIDevice *d, /* This size should be enough to read the first 7 lines of a resource file */ #define XEN_HOST_PCI_RESOURCE_BUFFER_SIZE 400 -static int xen_host_pci_get_resource(XenHostPCIDevice *d) +static void xen_host_pci_get_resource(XenHostPCIDevice *d, Error **errp) { int i, rc, fd; char path[PATH_MAX]; @@ -57,19 +57,18 @@ static int xen_host_pci_get_resource(XenHostPCIDevice *d) fd = open(path, O_RDONLY); if (fd == -1) { - XEN_HOST_PCI_LOG("Error: Can't open %s: %s\n", path, strerror(errno)); - return -errno; + error_setg_file_open(errp, errno, path); + return; } do { - rc = read(fd, &buf, sizeof (buf) - 1); + rc = read(fd, &buf, sizeof(buf) - 1); if (rc < 0 && errno != EINTR) { - rc = -errno; + error_setg_errno(errp, errno, "read err"); goto out; } } while (rc < 0); buf[rc] = 0; - rc = 0; s = buf; for (i = 0; i < PCI_NUM_REGIONS; i++) { @@ -122,20 +121,19 @@ static int xen_host_pci_get_resource(XenHostPCIDevice *d) d->rom.bus_flags = flags & IORESOURCE_BITS; } } + if (i != PCI_NUM_REGIONS) { - /* Invalid format or input to short */ - rc = -ENODEV; + error_setg(errp, "Invalid format or input too short: %s", buf); } out: close(fd); - return rc; } /* This size should be enough to read a long from a file */ #define XEN_HOST_PCI_GET_VALUE_BUFFER_SIZE 22 -static int xen_host_pci_get_value(XenHostPCIDevice *d, const char *name, - unsigned int *pvalue, int base) +static void xen_host_pci_get_value(XenHostPCIDevice *d, const char *name, + unsigned int *pvalue, int base, Error **errp) { char path[PATH_MAX]; char buf[XEN_HOST_PCI_GET_VALUE_BUFFER_SIZE]; @@ -147,39 +145,45 @@ static int xen_host_pci_get_value(XenHostPCIDevice *d, const char *name, fd = open(path, O_RDONLY); if (fd == -1) { - XEN_HOST_PCI_LOG("Error: Can't open %s: %s\n", path, strerror(errno)); - return -errno; + error_setg_file_open(errp, errno, path); + return; } + do { - rc = read(fd, &buf, sizeof (buf) - 1); + rc = read(fd, &buf, sizeof(buf) - 1); if (rc < 0 && errno != EINTR) { - rc = -errno; + error_setg_errno(errp, errno, "read err"); goto out; } } while (rc < 0); + buf[rc] = 0; rc = qemu_strtoul(buf, &endptr, base, &value); if (!rc) { assert(value <= UINT_MAX); *pvalue = value; + } else { + error_setg_errno(errp, -rc, "failed to parse value '%s'", buf); } + out: close(fd); - return rc; } -static inline int xen_host_pci_get_hex_value(XenHostPCIDevice *d, - const char *name, - unsigned int *pvalue) +static inline void xen_host_pci_get_hex_value(XenHostPCIDevice *d, + const char *name, + unsigned int *pvalue, + Error **errp) { - return xen_host_pci_get_value(d, name, pvalue, 16); + xen_host_pci_get_value(d, name, pvalue, 16, errp); } -static inline int xen_host_pci_get_dec_value(XenHostPCIDevice *d, - const char *name, - unsigned int *pvalue) +static inline void xen_host_pci_get_dec_value(XenHostPCIDevice *d, + const char *name, + unsigned int *pvalue, + Error **errp) { - return xen_host_pci_get_value(d, name, pvalue, 10); + xen_host_pci_get_value(d, name, pvalue, 10, errp); } static bool xen_host_pci_dev_is_virtfn(XenHostPCIDevice *d) @@ -192,17 +196,16 @@ static bool xen_host_pci_dev_is_virtfn(XenHostPCIDevice *d) return !stat(path, &buf); } -static int xen_host_pci_config_open(XenHostPCIDevice *d) +static void xen_host_pci_config_open(XenHostPCIDevice *d, Error **errp) { char path[PATH_MAX]; xen_host_pci_sysfs_path(d, "config", path, sizeof(path)); d->config_fd = open(path, O_RDWR); - if (d->config_fd < 0) { - return -errno; + if (d->config_fd == -1) { + error_setg_file_open(errp, errno, path); } - return 0; } static int xen_host_pci_config_read(XenHostPCIDevice *d, @@ -324,11 +327,12 @@ int xen_host_pci_find_ext_cap_offset(XenHostPCIDevice *d, uint32_t cap) return -1; } -int xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t domain, - uint8_t bus, uint8_t dev, uint8_t func) +void xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t domain, + uint8_t bus, uint8_t dev, uint8_t func, + Error **errp) { unsigned int v; - int rc = 0; + Error *err = NULL; d->config_fd = -1; d->domain = domain; @@ -336,43 +340,51 @@ int xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t domain, d->dev = dev; d->func = func; - rc = xen_host_pci_config_open(d); - if (rc) { + xen_host_pci_config_open(d, &err); + if (err) { goto error; } - rc = xen_host_pci_get_resource(d); - if (rc) { + + xen_host_pci_get_resource(d, &err); + if (err) { goto error; } - rc = xen_host_pci_get_hex_value(d, "vendor", &v); - if (rc) { + + xen_host_pci_get_hex_value(d, "vendor", &v, &err); + if (err) { goto error; } d->vendor_id = v; - rc = xen_host_pci_get_hex_value(d, "device", &v); - if (rc) { + + xen_host_pci_get_hex_value(d, "device", &v, &err); + if (err) { goto error; } d->device_id = v; - rc = xen_host_pci_get_dec_value(d, "irq", &v); - if (rc) { + + xen_host_pci_get_dec_value(d, "irq", &v, &err); + if (err) { goto error; } d->irq = v; - rc = xen_host_pci_get_hex_value(d, "class", &v); - if (rc) { + + xen_host_pci_get_hex_value(d, "class", &v, &err); + if (err) { goto error; } d->class_code = v; + d->is_virtfn = xen_host_pci_dev_is_virtfn(d); - return 0; + return; + error: + error_propagate(errp, err); + if (d->config_fd >= 0) { close(d->config_fd); d->config_fd = -1; } - return rc; } bool xen_host_pci_device_closed(XenHostPCIDevice *d) diff --git a/hw/xen/xen-host-pci-device.h b/hw/xen/xen-host-pci-device.h index 3d44e04..6acf36e 100644 --- a/hw/xen/xen-host-pci-device.h +++ b/hw/xen/xen-host-pci-device.h @@ -36,8 +36,9 @@ typedef struct XenHostPCIDevice { int config_fd; } XenHostPCIDevice; -int xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t domain, - uint8_t bus, uint8_t dev, uint8_t func); +void xen_host_pci_device_get(XenHostPCIDevice *d, uint16_t domain, + uint8_t bus, uint8_t dev, uint8_t func, + Error **errp); void xen_host_pci_device_put(XenHostPCIDevice *pci_dev); bool xen_host_pci_device_closed(XenHostPCIDevice *d); diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c index aa96288..53b5bca 100644 --- a/hw/xen/xen_pt.c +++ b/hw/xen/xen_pt.c @@ -767,6 +767,7 @@ static int xen_pt_initfn(PCIDevice *d) uint8_t machine_irq = 0, scratch; uint16_t cmd = 0; int pirq = XEN_PT_UNASSIGNED_PIRQ; + Error *err = NULL; /* register real device */ XEN_PT_LOG(d, "Assigning real physical device %02x:%02x.%d" @@ -774,11 +775,13 @@ static int xen_pt_initfn(PCIDevice *d) s->hostaddr.bus, s->hostaddr.slot, s->hostaddr.function, s->dev.devfn); - rc = xen_host_pci_device_get(&s->real_device, - s->hostaddr.domain, s->hostaddr.bus, - s->hostaddr.slot, s->hostaddr.function); - if (rc) { - XEN_PT_ERR(d, "Failed to \"open\" the real pci device. rc: %i\n", rc); + xen_host_pci_device_get(&s->real_device, + s->hostaddr.domain, s->hostaddr.bus, + s->hostaddr.slot, s->hostaddr.function, + &err); + if (err) { + error_append_hint(&err, "Failed to \"open\" the real pci device"); + error_report_err(err); return -1; } -- cgit v1.1 From 5226bb59f703963914e446557a2eea4a82eaf462 Mon Sep 17 00:00:00 2001 From: Cao jin Date: Sun, 17 Jan 2016 20:13:13 +0800 Subject: Add Error **errp for xen_pt_setup_vga() To catch the error message. Also modify the caller Signed-off-by: Cao jin Reviewed-by: Eric Blake Reviewed-by: Stefano Stabellini --- hw/xen/xen_pt.c | 7 +++++-- hw/xen/xen_pt.h | 3 ++- hw/xen/xen_pt_graphics.c | 11 ++++++----- 3 files changed, 13 insertions(+), 8 deletions(-) (limited to 'hw') diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c index 53b5bca..07bfcec 100644 --- a/hw/xen/xen_pt.c +++ b/hw/xen/xen_pt.c @@ -808,8 +808,11 @@ static int xen_pt_initfn(PCIDevice *d) return -1; } - if (xen_pt_setup_vga(s, &s->real_device) < 0) { - XEN_PT_ERR(d, "Setup VGA BIOS of passthrough GFX failed!\n"); + xen_pt_setup_vga(s, &s->real_device, &err); + if (err) { + error_append_hint(&err, "Setup VGA BIOS of passthrough" + " GFX failed"); + error_report_err(err); xen_host_pci_device_put(&s->real_device); return -1; } diff --git a/hw/xen/xen_pt.h b/hw/xen/xen_pt.h index 3749711..26f74f8 100644 --- a/hw/xen/xen_pt.h +++ b/hw/xen/xen_pt.h @@ -330,5 +330,6 @@ static inline bool is_igd_vga_passthrough(XenHostPCIDevice *dev) } int xen_pt_register_vga_regions(XenHostPCIDevice *dev); int xen_pt_unregister_vga_regions(XenHostPCIDevice *dev); -int xen_pt_setup_vga(XenPCIPassthroughState *s, XenHostPCIDevice *dev); +void xen_pt_setup_vga(XenPCIPassthroughState *s, XenHostPCIDevice *dev, + Error **errp); #endif /* !XEN_PT_H */ diff --git a/hw/xen/xen_pt_graphics.c b/hw/xen/xen_pt_graphics.c index df6069b..e7a7c7e 100644 --- a/hw/xen/xen_pt_graphics.c +++ b/hw/xen/xen_pt_graphics.c @@ -161,7 +161,8 @@ struct pci_data { uint16_t reserved; } __attribute__((packed)); -int xen_pt_setup_vga(XenPCIPassthroughState *s, XenHostPCIDevice *dev) +void xen_pt_setup_vga(XenPCIPassthroughState *s, XenHostPCIDevice *dev, + Error **errp) { unsigned char *bios = NULL; struct rom_header *rom; @@ -172,13 +173,14 @@ int xen_pt_setup_vga(XenPCIPassthroughState *s, XenHostPCIDevice *dev) struct pci_data *pd = NULL; if (!is_igd_vga_passthrough(dev)) { - return -1; + error_setg(errp, "Need to enable igd-passthrough"); + return; } bios = get_vgabios(s, &bios_size, dev); if (!bios) { - XEN_PT_ERR(&s->dev, "VGA: Can't getting VBIOS!\n"); - return -1; + error_setg(errp, "VGA: Can't get VBIOS"); + return; } /* Currently we fixed this address as a primary. */ @@ -203,7 +205,6 @@ int xen_pt_setup_vga(XenPCIPassthroughState *s, XenHostPCIDevice *dev) /* Currently we fixed this address as a primary for legacy BIOS. */ cpu_physical_memory_rw(0xc0000, bios, bios_size, 1); - return 0; } uint32_t igd_read_opregion(XenPCIPassthroughState *s) -- cgit v1.1 From d50a6e58e83cdf534fd3f6c152c71b65973ab502 Mon Sep 17 00:00:00 2001 From: Cao jin Date: Sun, 17 Jan 2016 20:13:14 +0800 Subject: Add Error **errp for xen_pt_config_init() To catch the error message. Also modify the caller Signed-off-by: Cao jin Reviewed-by: Eric Blake Reviewed-by: Stefano Stabellini --- hw/xen/xen_pt.c | 8 ++++--- hw/xen/xen_pt.h | 2 +- hw/xen/xen_pt_config_init.c | 51 ++++++++++++++++++++++++--------------------- 3 files changed, 33 insertions(+), 28 deletions(-) (limited to 'hw') diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c index 07bfcec..9eef3df 100644 --- a/hw/xen/xen_pt.c +++ b/hw/xen/xen_pt.c @@ -825,9 +825,11 @@ static int xen_pt_initfn(PCIDevice *d) xen_pt_register_regions(s, &cmd); /* reinitialize each config register to be emulated */ - rc = xen_pt_config_init(s); - if (rc) { - XEN_PT_ERR(d, "PCI Config space initialisation failed.\n"); + xen_pt_config_init(s, &err); + if (err) { + error_append_hint(&err, "PCI Config space initialisation failed"); + error_report_err(err); + rc = -1; goto err_out; } diff --git a/hw/xen/xen_pt.h b/hw/xen/xen_pt.h index 26f74f8..c2f8e1f 100644 --- a/hw/xen/xen_pt.h +++ b/hw/xen/xen_pt.h @@ -230,7 +230,7 @@ struct XenPCIPassthroughState { bool listener_set; }; -int xen_pt_config_init(XenPCIPassthroughState *s); +void xen_pt_config_init(XenPCIPassthroughState *s, Error **errp); void xen_pt_config_delete(XenPCIPassthroughState *s); XenPTRegGroup *xen_pt_find_reg_grp(XenPCIPassthroughState *s, uint32_t address); XenPTReg *xen_pt_find_reg(XenPTRegGroup *reg_grp, uint32_t address); diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c index 185a698..81c6721 100644 --- a/hw/xen/xen_pt_config_init.c +++ b/hw/xen/xen_pt_config_init.c @@ -1887,8 +1887,9 @@ static uint8_t find_cap_offset(XenPCIPassthroughState *s, uint8_t cap) return 0; } -static int xen_pt_config_reg_init(XenPCIPassthroughState *s, - XenPTRegGroup *reg_grp, XenPTRegInfo *reg) +static void xen_pt_config_reg_init(XenPCIPassthroughState *s, + XenPTRegGroup *reg_grp, XenPTRegInfo *reg, + Error **errp) { XenPTReg *reg_entry; uint32_t data = 0; @@ -1907,12 +1908,13 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s, reg_grp->base_offset + reg->offset, &data); if (rc < 0) { g_free(reg_entry); - return rc; + error_setg(errp, "Init emulate register fail"); + return; } if (data == XEN_PT_INVALID_REG) { /* free unused BAR register entry */ g_free(reg_entry); - return 0; + return; } /* Sync up the data to dev.config */ offset = reg_grp->base_offset + reg->offset; @@ -1930,7 +1932,8 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s, if (rc) { /* Serious issues when we cannot read the host values! */ g_free(reg_entry); - return rc; + error_setg(errp, "Cannot read host values"); + return; } /* Set bits in emu_mask are the ones we emulate. The dev.config shall * contain the emulated view of the guest - therefore we flip the mask @@ -1955,10 +1958,10 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s, val = data; if (val & ~size_mask) { - XEN_PT_ERR(&s->dev,"Offset 0x%04x:0x%04x expands past register size(%d)!\n", - offset, val, reg->size); + error_setg(errp, "Offset 0x%04x:0x%04x expands past" + " register size (%d)", offset, val, reg->size); g_free(reg_entry); - return -ENXIO; + return; } /* This could be just pci_set_long as we don't modify the bits * past reg->size, but in case this routine is run in parallel or the @@ -1978,13 +1981,12 @@ static int xen_pt_config_reg_init(XenPCIPassthroughState *s, } /* list add register entry */ QLIST_INSERT_HEAD(®_grp->reg_tbl_list, reg_entry, entries); - - return 0; } -int xen_pt_config_init(XenPCIPassthroughState *s) +void xen_pt_config_init(XenPCIPassthroughState *s, Error **errp) { int i, rc; + Error *err = NULL; QLIST_INIT(&s->reg_grps); @@ -2027,11 +2029,12 @@ int xen_pt_config_init(XenPCIPassthroughState *s) reg_grp_offset, ®_grp_entry->size); if (rc < 0) { - XEN_PT_LOG(&s->dev, "Failed to initialize %d/%ld, type=0x%x, rc:%d\n", - i, ARRAY_SIZE(xen_pt_emu_reg_grps), + error_setg(&err, "Failed to initialize %d/%zu, type = 0x%x," + " rc: %d", i, ARRAY_SIZE(xen_pt_emu_reg_grps), xen_pt_emu_reg_grps[i].grp_type, rc); + error_propagate(errp, err); xen_pt_config_delete(s); - return rc; + return; } } @@ -2039,24 +2042,24 @@ int xen_pt_config_init(XenPCIPassthroughState *s) if (xen_pt_emu_reg_grps[i].emu_regs) { int j = 0; XenPTRegInfo *regs = xen_pt_emu_reg_grps[i].emu_regs; + /* initialize capability register */ for (j = 0; regs->size != 0; j++, regs++) { - /* initialize capability register */ - rc = xen_pt_config_reg_init(s, reg_grp_entry, regs); - if (rc < 0) { - XEN_PT_LOG(&s->dev, "Failed to initialize %d/%ld reg 0x%x in grp_type=0x%x (%d/%ld), rc=%d\n", - j, ARRAY_SIZE(xen_pt_emu_reg_grps[i].emu_regs), - regs->offset, xen_pt_emu_reg_grps[i].grp_type, - i, ARRAY_SIZE(xen_pt_emu_reg_grps), rc); + xen_pt_config_reg_init(s, reg_grp_entry, regs, &err); + if (err) { + error_append_hint(&err, "Failed to initialize %d/%zu" + " reg 0x%x in grp_type = 0x%x (%d/%zu)", + j, ARRAY_SIZE(xen_pt_emu_reg_grps[i].emu_regs), + regs->offset, xen_pt_emu_reg_grps[i].grp_type, + i, ARRAY_SIZE(xen_pt_emu_reg_grps)); + error_propagate(errp, err); xen_pt_config_delete(s); - return rc; + return; } } } } } - - return 0; } /* delete all emulate register */ -- cgit v1.1 From 5a11d0f7549e24a10e178a9dc8ff5e698031d9a6 Mon Sep 17 00:00:00 2001 From: Cao jin Date: Sun, 17 Jan 2016 20:13:15 +0800 Subject: Xen PCI passthru: convert to realize() Signed-off-by: Cao jin Reviewed-by: Eric Blake Reviewed-by: Stefano Stabellini --- hw/xen/xen_pt.c | 53 ++++++++++++++++++++++++++++------------------------- 1 file changed, 28 insertions(+), 25 deletions(-) (limited to 'hw') diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c index 9eef3df..d33221b 100644 --- a/hw/xen/xen_pt.c +++ b/hw/xen/xen_pt.c @@ -760,10 +760,10 @@ static void xen_pt_destroy(PCIDevice *d) { } /* init */ -static int xen_pt_initfn(PCIDevice *d) +static void xen_pt_realize(PCIDevice *d, Error **errp) { XenPCIPassthroughState *s = XEN_PT_DEVICE(d); - int rc = 0; + int i, rc = 0; uint8_t machine_irq = 0, scratch; uint16_t cmd = 0; int pirq = XEN_PT_UNASSIGNED_PIRQ; @@ -781,8 +781,8 @@ static int xen_pt_initfn(PCIDevice *d) &err); if (err) { error_append_hint(&err, "Failed to \"open\" the real pci device"); - error_report_err(err); - return -1; + error_propagate(errp, err); + return; } s->is_virtfn = s->real_device.is_virtfn; @@ -802,19 +802,19 @@ static int xen_pt_initfn(PCIDevice *d) if ((s->real_device.domain == 0) && (s->real_device.bus == 0) && (s->real_device.dev == 2) && (s->real_device.func == 0)) { if (!is_igd_vga_passthrough(&s->real_device)) { - XEN_PT_ERR(d, "Need to enable igd-passthru if you're trying" - " to passthrough IGD GFX.\n"); + error_setg(errp, "Need to enable igd-passthru if you're trying" + " to passthrough IGD GFX"); xen_host_pci_device_put(&s->real_device); - return -1; + return; } xen_pt_setup_vga(s, &s->real_device, &err); if (err) { error_append_hint(&err, "Setup VGA BIOS of passthrough" " GFX failed"); - error_report_err(err); + error_propagate(errp, err); xen_host_pci_device_put(&s->real_device); - return -1; + return; } /* Register ISA bridge for passthrough GFX. */ @@ -836,20 +836,19 @@ static int xen_pt_initfn(PCIDevice *d) /* Bind interrupt */ rc = xen_host_pci_get_byte(&s->real_device, PCI_INTERRUPT_PIN, &scratch); if (rc) { - XEN_PT_ERR(d, "Failed to read PCI_INTERRUPT_PIN! (rc:%d)\n", rc); + error_setg_errno(errp, errno, "Failed to read PCI_INTERRUPT_PIN"); goto err_out; } if (!scratch) { - XEN_PT_LOG(d, "no pin interrupt\n"); + error_setg(errp, "no pin interrupt"); goto out; } machine_irq = s->real_device.irq; rc = xc_physdev_map_pirq(xen_xc, xen_domid, machine_irq, &pirq); - if (rc < 0) { - XEN_PT_ERR(d, "Mapping machine irq %u to pirq %i failed, (err: %d)\n", - machine_irq, pirq, errno); + error_setg_errno(errp, errno, "Mapping machine irq %u to" + " pirq %i failed", machine_irq, pirq); /* Disable PCI intx assertion (turn on bit10 of devctl) */ cmd |= PCI_COMMAND_INTX_DISABLE; @@ -870,8 +869,8 @@ static int xen_pt_initfn(PCIDevice *d) PCI_SLOT(d->devfn), e_intx); if (rc < 0) { - XEN_PT_ERR(d, "Binding of interrupt %i failed! (err: %d)\n", - e_intx, errno); + error_setg_errno(errp, errno, "Binding of interrupt %u failed", + e_intx); /* Disable PCI intx assertion (turn on bit10 of devctl) */ cmd |= PCI_COMMAND_INTX_DISABLE; @@ -879,8 +878,8 @@ static int xen_pt_initfn(PCIDevice *d) if (xen_pt_mapped_machine_irq[machine_irq] == 0) { if (xc_physdev_unmap_pirq(xen_xc, xen_domid, machine_irq)) { - XEN_PT_ERR(d, "Unmapping of machine interrupt %i failed!" - " (err: %d)\n", machine_irq, errno); + error_setg_errno(errp, errno, "Unmapping of machine" + " interrupt %u failed", machine_irq); } } s->machine_irq = 0; @@ -893,14 +892,14 @@ out: rc = xen_host_pci_get_word(&s->real_device, PCI_COMMAND, &val); if (rc) { - XEN_PT_ERR(d, "Failed to read PCI_COMMAND! (rc: %d)\n", rc); + error_setg_errno(errp, errno, "Failed to read PCI_COMMAND"); goto err_out; } else { val |= cmd; rc = xen_host_pci_set_word(&s->real_device, PCI_COMMAND, val); if (rc) { - XEN_PT_ERR(d, "Failed to write PCI_COMMAND val=0x%x!(rc: %d)\n", - val, rc); + error_setg_errno(errp, errno, "Failed to write PCI_COMMAND" + " val = 0x%x", val); goto err_out; } } @@ -910,15 +909,19 @@ out: memory_listener_register(&s->io_listener, &address_space_io); s->listener_set = true; XEN_PT_LOG(d, - "Real physical device %02x:%02x.%d registered successfully!\n", + "Real physical device %02x:%02x.%d registered successfully\n", s->hostaddr.bus, s->hostaddr.slot, s->hostaddr.function); - return 0; + return; err_out: + for (i = 0; i < PCI_ROM_SLOT; i++) { + object_unparent(OBJECT(&s->bar[i])); + } + object_unparent(OBJECT(&s->rom)); + xen_pt_destroy(d); assert(rc); - return rc; } static void xen_pt_unregister_device(PCIDevice *d) @@ -937,7 +940,7 @@ static void xen_pci_passthrough_class_init(ObjectClass *klass, void *data) DeviceClass *dc = DEVICE_CLASS(klass); PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); - k->init = xen_pt_initfn; + k->realize = xen_pt_realize; k->exit = xen_pt_unregister_device; k->config_read = xen_pt_pci_read_config; k->config_write = xen_pt_pci_write_config; -- cgit v1.1