diff options
Diffstat (limited to 'drivers/staging/hv/vmbus_drv.c')
| -rw-r--r-- | drivers/staging/hv/vmbus_drv.c | 68 |
1 files changed, 50 insertions, 18 deletions
diff --git a/drivers/staging/hv/vmbus_drv.c b/drivers/staging/hv/vmbus_drv.c index 894eecfc63ca..2c906195b9c8 100644 --- a/drivers/staging/hv/vmbus_drv.c +++ b/drivers/staging/hv/vmbus_drv.c @@ -24,6 +24,9 @@ #include <linux/irq.h> #include <linux/interrupt.h> #include <linux/sysctl.h> +#include <linux/pci.h> +#include <linux/dmi.h> +#include "VersionInfo.h" #include "osd.h" #include "logging.h" #include "vmbus.h" @@ -47,7 +50,7 @@ struct vmbus_driver_context { struct tasklet_struct event_dpc; /* The bus root device */ - struct device_context device_ctx; + struct vm_device device_ctx; }; static int vmbus_match(struct device *device, struct device_driver *driver); @@ -135,7 +138,7 @@ static ssize_t vmbus_show_device_attr(struct device *dev, struct device_attribute *dev_attr, char *buf) { - struct device_context *device_ctx = device_to_device_context(dev); + struct vm_device *device_ctx = device_to_vm_device(dev); struct hv_device_info device_info; memset(&device_info, 0, sizeof(struct hv_device_info)); @@ -245,7 +248,7 @@ static int vmbus_bus_init(int (*drv_init)(struct hv_driver *drv)) { struct vmbus_driver_context *vmbus_drv_ctx = &g_vmbus_drv; struct vmbus_driver *vmbus_drv_obj = &g_vmbus_drv.drv_obj; - struct device_context *dev_ctx = &g_vmbus_drv.device_ctx; + struct vm_device *dev_ctx = &g_vmbus_drv.device_ctx; int ret; unsigned int vector; @@ -307,7 +310,7 @@ static int vmbus_bus_init(int (*drv_init)(struct hv_driver *drv)) DPRINT_INFO(VMBUS_DRV, "irq 0x%x vector 0x%x", vmbus_irq, vector); /* Call to bus driver to add the root device */ - memset(dev_ctx, 0, sizeof(struct device_context)); + memset(dev_ctx, 0, sizeof(struct vm_device)); ret = vmbus_drv_obj->Base.OnDeviceAdd(&dev_ctx->device_obj, &vector); if (ret != 0) { @@ -368,7 +371,7 @@ static void vmbus_bus_exit(void) struct vmbus_driver *vmbus_drv_obj = &g_vmbus_drv.drv_obj; struct vmbus_driver_context *vmbus_drv_ctx = &g_vmbus_drv; - struct device_context *dev_ctx = &g_vmbus_drv.device_ctx; + struct vm_device *dev_ctx = &g_vmbus_drv.device_ctx; DPRINT_ENTER(VMBUS_DRV); @@ -471,13 +474,13 @@ static struct hv_device *vmbus_child_device_create(struct hv_guid *type, struct hv_guid *instance, void *context) { - struct device_context *child_device_ctx; + struct vm_device *child_device_ctx; struct hv_device *child_device_obj; DPRINT_ENTER(VMBUS_DRV); /* Allocate the new child device */ - child_device_ctx = kzalloc(sizeof(struct device_context), GFP_KERNEL); + child_device_ctx = kzalloc(sizeof(struct vm_device), GFP_KERNEL); if (!child_device_ctx) { DPRINT_ERR(VMBUS_DRV, "unable to allocate device_context for child device"); @@ -526,10 +529,10 @@ static int vmbus_child_device_register(struct hv_device *root_device_obj, struct hv_device *child_device_obj) { int ret = 0; - struct device_context *root_device_ctx = - to_device_context(root_device_obj); - struct device_context *child_device_ctx = - to_device_context(child_device_obj); + struct vm_device *root_device_ctx = + to_vm_device(root_device_obj); + struct vm_device *child_device_ctx = + to_vm_device(child_device_obj); static atomic_t device_num = ATOMIC_INIT(0); DPRINT_ENTER(VMBUS_DRV); @@ -572,7 +575,7 @@ static int vmbus_child_device_register(struct hv_device *root_device_obj, */ static void vmbus_child_device_unregister(struct hv_device *device_obj) { - struct device_context *device_ctx = to_device_context(device_obj); + struct vm_device *device_ctx = to_vm_device(device_obj); DPRINT_ENTER(VMBUS_DRV); @@ -610,7 +613,7 @@ static void vmbus_child_device_destroy(struct hv_device *device_obj) */ static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env) { - struct device_context *device_ctx = device_to_device_context(device); + struct vm_device *device_ctx = device_to_vm_device(device); int ret; DPRINT_ENTER(VMBUS_DRV); @@ -687,7 +690,7 @@ static int vmbus_match(struct device *device, struct device_driver *driver) { int match = 0; struct driver_context *driver_ctx = driver_to_driver_context(driver); - struct device_context *device_ctx = device_to_device_context(device); + struct vm_device *device_ctx = device_to_vm_device(device); DPRINT_ENTER(VMBUS_DRV); @@ -724,7 +727,7 @@ static int vmbus_match(struct device *device, struct device_driver *driver) */ static void vmbus_probe_failed_cb(struct work_struct *context) { - struct device_context *device_ctx = (struct device_context *)context; + struct vm_device *device_ctx = (struct vm_device *)context; DPRINT_ENTER(VMBUS_DRV); @@ -746,8 +749,8 @@ static int vmbus_probe(struct device *child_device) int ret = 0; struct driver_context *driver_ctx = driver_to_driver_context(child_device->driver); - struct device_context *device_ctx = - device_to_device_context(child_device); + struct vm_device *device_ctx = + device_to_vm_device(child_device); DPRINT_ENTER(VMBUS_DRV); @@ -871,7 +874,7 @@ static void vmbus_bus_release(struct device *device) */ static void vmbus_device_release(struct device *device) { - struct device_context *device_ctx = device_to_device_context(device); + struct vm_device *device_ctx = device_to_vm_device(device); DPRINT_ENTER(VMBUS_DRV); @@ -946,6 +949,19 @@ static irqreturn_t vmbus_isr(int irq, void *dev_id) } } +static struct dmi_system_id __initdata microsoft_hv_dmi_table[] = { + { + .ident = "Hyper-V", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"), + DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"), + }, + }, + { }, +}; +MODULE_DEVICE_TABLE(dmi, microsoft_hv_dmi_table); + static int __init vmbus_init(void) { int ret = 0; @@ -957,6 +973,9 @@ static int __init vmbus_init(void) vmbus_loglevel, HIWORD(vmbus_loglevel), LOWORD(vmbus_loglevel)); /* Todo: it is used for loglevel, to be ported to new kernel. */ + if (!dmi_check_system(microsoft_hv_dmi_table)) + return -ENODEV; + ret = vmbus_bus_init(VmbusInitialize); DPRINT_EXIT(VMBUS_DRV); @@ -973,7 +992,20 @@ static void __exit vmbus_exit(void) return; } +/* + * We use a PCI table to determine if we should autoload this driver This is + * needed by distro tools to determine if the hyperv drivers should be + * installed and/or configured. We don't do anything else with the table, but + * it needs to be present. + */ +const static struct pci_device_id microsoft_hv_pci_table[] = { + { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */ + { 0 } +}; +MODULE_DEVICE_TABLE(pci, microsoft_hv_pci_table); + MODULE_LICENSE("GPL"); +MODULE_VERSION(HV_DRV_VERSION); module_param(vmbus_irq, int, S_IRUGO); module_param(vmbus_loglevel, int, S_IRUGO); |