#include "kvm/threadpool.h"
#include "kvm/irq.h"
#include "kvm/guest_compat.h"
+#include "kvm/virtio-pci.h"
#include <linux/virtio_console.h>
#include <linux/virtio_ring.h>
#define VIRTIO_CONSOLE_RX_QUEUE 0
#define VIRTIO_CONSOLE_TX_QUEUE 1
-static struct pci_device_header virtio_console_pci_device = {
- .vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET,
- .device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE,
- .header_type = PCI_HEADER_TYPE_NORMAL,
- .revision_id = 0,
- .class = 0x078000,
- .subsys_vendor_id = PCI_SUBSYSTEM_VENDOR_ID_REDHAT_QUMRANET,
- .subsys_id = VIRTIO_ID_CONSOLE,
-};
-
struct con_dev {
pthread_mutex_t mutex;
+ struct virtio_pci vpci;
struct virt_queue vqs[VIRTIO_CONSOLE_NUM_QUEUES];
- struct virtio_console_config console_config;
- u32 host_features;
- u32 guest_features;
- u16 config_vector;
- u8 status;
- u8 isr;
- u16 queue_selector;
- u16 base_addr;
+ struct virtio_console_config config;
+ u32 features;
int compat_id;
struct thread_pool__job jobs[VIRTIO_CONSOLE_NUM_QUEUES];
static struct con_dev cdev = {
.mutex = PTHREAD_MUTEX_INITIALIZER,
- .console_config = {
+ .config = {
.cols = 80,
.rows = 24,
.max_nr_ports = 1,
},
-
- .host_features = 0,
};
/*
head = virt_queue__get_iov(vq, iov, &out, &in, kvm);
len = term_getc_iov(CONSOLE_VIRTIO, iov, in);
virt_queue__set_used_elem(vq, head, len);
- virt_queue__trigger_irq(vq, virtio_console_pci_device.irq_line, &cdev.isr, kvm);
+ virtio_pci__signal_vq(kvm, &cdev.vpci, vq - cdev.vqs);
}
mutex_unlock(&cdev.mutex);
thread_pool__do_job(&cdev.jobs[VIRTIO_CONSOLE_RX_QUEUE]);
}
-static bool virtio_console_pci_io_device_specific_in(void *data, unsigned long offset, int size)
-{
- u8 *config_space = (u8 *) &cdev.console_config;
-
- if (size != 1)
- return false;
-
- if ((offset - VIRTIO_MSI_CONFIG_VECTOR) > sizeof(struct virtio_console_config))
- pr_error("config offset is too big: %li", offset - VIRTIO_MSI_CONFIG_VECTOR);
-
- ioport__write8(data, config_space[offset - VIRTIO_MSI_CONFIG_VECTOR]);
-
- return true;
-}
-
-static bool virtio_console_pci_io_in(struct ioport *ioport, struct kvm *kvm, u16 port, void *data, int size)
-{
- unsigned long offset = port - cdev.base_addr;
- bool ret = true;
-
- mutex_lock(&cdev.mutex);
-
- switch (offset) {
- case VIRTIO_PCI_HOST_FEATURES:
- ioport__write32(data, cdev.host_features);
- break;
- case VIRTIO_PCI_GUEST_FEATURES:
- ret = false;
- break;
- case VIRTIO_PCI_QUEUE_PFN:
- ioport__write32(data, cdev.vqs[cdev.queue_selector].pfn);
- break;
- case VIRTIO_PCI_QUEUE_NUM:
- ioport__write16(data, VIRTIO_CONSOLE_QUEUE_SIZE);
- break;
- case VIRTIO_PCI_QUEUE_SEL:
- case VIRTIO_PCI_QUEUE_NOTIFY:
- ret = false;
- break;
- case VIRTIO_PCI_STATUS:
- ioport__write8(data, cdev.status);
- break;
- case VIRTIO_PCI_ISR:
- ioport__write8(data, cdev.isr);
- kvm__irq_line(kvm, virtio_console_pci_device.irq_line, VIRTIO_IRQ_LOW);
- cdev.isr = VIRTIO_IRQ_LOW;
- break;
- case VIRTIO_MSI_CONFIG_VECTOR:
- ioport__write16(data, cdev.config_vector);
- break;
- default:
- ret = virtio_console_pci_io_device_specific_in(data, offset, size);
- };
-
- mutex_unlock(&cdev.mutex);
-
- return ret;
-}
-
static void virtio_console_handle_callback(struct kvm *kvm, void *param)
{
struct iovec iov[VIRTIO_CONSOLE_QUEUE_SIZE];
}
-static bool virtio_console_pci_io_out(struct ioport *ioport, struct kvm *kvm, u16 port, void *data, int size)
+static void set_config(struct kvm *kvm, void *dev, u8 data, u32 offset)
{
- unsigned long offset = port - cdev.base_addr;
- bool ret = true;
+ struct con_dev *cdev = dev;
- mutex_lock(&cdev.mutex);
+ ((u8 *)(&cdev->config))[offset] = data;
+}
+
+static u8 get_config(struct kvm *kvm, void *dev, u32 offset)
+{
+ struct con_dev *cdev = dev;
- switch (offset) {
- case VIRTIO_PCI_GUEST_FEATURES:
- cdev.guest_features = ioport__read32(data);
- break;
- case VIRTIO_PCI_QUEUE_PFN: {
- struct virt_queue *queue;
- void *p;
+ return ((u8 *)(&cdev->config))[offset];
+}
+
+static u32 get_host_features(struct kvm *kvm, void *dev)
+{
+ return 0;
+}
- assert(cdev.queue_selector < VIRTIO_CONSOLE_NUM_QUEUES);
+static void set_guest_features(struct kvm *kvm, void *dev, u32 features)
+{
+ /* Unused */
+}
- compat__remove_message(cdev.compat_id);
+static int init_vq(struct kvm *kvm, void *dev, u32 vq, u32 pfn)
+{
+ struct virt_queue *queue;
+ void *p;
- queue = &cdev.vqs[cdev.queue_selector];
- queue->pfn = ioport__read32(data);
- p = guest_pfn_to_host(kvm, queue->pfn);
+ assert(vq < VIRTIO_CONSOLE_NUM_QUEUES);
- vring_init(&queue->vring, VIRTIO_CONSOLE_QUEUE_SIZE, p, VIRTIO_PCI_VRING_ALIGN);
+ compat__remove_message(cdev.compat_id);
- if (cdev.queue_selector == VIRTIO_CONSOLE_TX_QUEUE)
- thread_pool__init_job(&cdev.jobs[cdev.queue_selector], kvm, virtio_console_handle_callback, queue);
- else if (cdev.queue_selector == VIRTIO_CONSOLE_RX_QUEUE)
- thread_pool__init_job(&cdev.jobs[cdev.queue_selector], kvm, virtio_console__inject_interrupt_callback, queue);
+ queue = &cdev.vqs[vq];
+ queue->pfn = pfn;
+ p = guest_pfn_to_host(kvm, queue->pfn);
- break;
- }
- case VIRTIO_PCI_QUEUE_SEL:
- cdev.queue_selector = ioport__read16(data);
- break;
- case VIRTIO_PCI_QUEUE_NOTIFY: {
- u16 queue_index = ioport__read16(data);
- thread_pool__do_job(&cdev.jobs[queue_index]);
- break;
- }
- case VIRTIO_PCI_STATUS:
- cdev.status = ioport__read8(data);
- break;
- case VIRTIO_MSI_CONFIG_VECTOR:
- cdev.config_vector = VIRTIO_MSI_NO_VECTOR;
- break;
- case VIRTIO_MSI_QUEUE_VECTOR:
- break;
- default:
- ret = false;
- break;
- };
+ vring_init(&queue->vring, VIRTIO_CONSOLE_QUEUE_SIZE, p, VIRTIO_PCI_VRING_ALIGN);
- mutex_unlock(&cdev.mutex);
+ if (vq == VIRTIO_CONSOLE_TX_QUEUE)
+ thread_pool__init_job(&cdev.jobs[vq], kvm, virtio_console_handle_callback, queue);
+ else if (vq == VIRTIO_CONSOLE_RX_QUEUE)
+ thread_pool__init_job(&cdev.jobs[vq], kvm, virtio_console__inject_interrupt_callback, queue);
- return ret;
+ return 0;
}
-static struct ioport_operations virtio_console_io_ops = {
- .io_in = virtio_console_pci_io_in,
- .io_out = virtio_console_pci_io_out,
-};
+static int notify_vq(struct kvm *kvm, void *dev, u32 vq)
+{
+ struct con_dev *cdev = dev;
+
+ thread_pool__do_job(&cdev->jobs[vq]);
+
+ return 0;
+}
+
+static int get_pfn_vq(struct kvm *kvm, void *dev, u32 vq)
+{
+ struct con_dev *cdev = dev;
+
+ return cdev->vqs[vq].pfn;
+}
+
+static int get_size_vq(struct kvm *kvm, void *dev, u32 vq)
+{
+ return VIRTIO_CONSOLE_QUEUE_SIZE;
+}
void virtio_console__init(struct kvm *kvm)
{
- u8 dev, line, pin;
- u16 console_base_addr;
-
- if (irq__register_device(VIRTIO_ID_CONSOLE, &dev, &pin, &line) < 0)
- return;
-
- virtio_console_pci_device.irq_pin = pin;
- virtio_console_pci_device.irq_line = line;
- console_base_addr = ioport__register(IOPORT_EMPTY, &virtio_console_io_ops, IOPORT_SIZE, NULL);
- virtio_console_pci_device.bar[0] = console_base_addr | PCI_BASE_ADDRESS_SPACE_IO;
- cdev.base_addr = console_base_addr;
- pci__register(&virtio_console_pci_device, dev);
+ virtio_pci__init(kvm, &cdev.vpci, &cdev, PCI_DEVICE_ID_VIRTIO_CONSOLE, VIRTIO_ID_CONSOLE);
+ cdev.vpci.ops = (struct virtio_pci_ops) {
+ .set_config = set_config,
+ .get_config = get_config,
+ .get_host_features = get_host_features,
+ .set_guest_features = set_guest_features,
+ .init_vq = init_vq,
+ .notify_vq = notify_vq,
+ .get_pfn_vq = get_pfn_vq,
+ .get_size_vq = get_size_vq,
+ };
cdev.compat_id = compat__add_message("virtio-console device was not detected",
"While you have requested a virtio-console device, "
projects / karo-tx-linux.git / commitdiff