/* Device File descriptor */
int fd;
+ /* read/write file descriptor for io bar */
+ int io_fd;
+ u64 io_offset;
+
/* Minor device for uio device. */
u32 uio_minor;
if (efds)
{
flags |= VFIO_IRQ_SET_DATA_EVENTFD;
- clib_memcpy (&irq_set->data, efds, data_len);
+ clib_memcpy_fast (&irq_set->data, efds, data_len);
}
else
flags |= VFIO_IRQ_SET_DATA_NONE;
}
static clib_error_t *
-vlib_pci_map_region_int (vlib_main_t * vm, vlib_pci_dev_handle_t h,
- u32 bar, u8 * addr, void **result)
+vlib_pci_region (vlib_main_t * vm, vlib_pci_dev_handle_t h, u32 bar, int *fd,
+ u64 * size, u64 * offset)
{
linux_pci_device_t *p = linux_pci_get_device (h);
- int fd = -1;
- clib_error_t *error;
- int flags = MAP_SHARED;
- u64 size = 0, offset = 0;
+ clib_error_t *error = 0;
+ int _fd = -1;
+ u64 _size = 0, _offset = 0;
ASSERT (bar <= 5);
error = 0;
- pci_log_debug (vm, p, "map region %u to va %p", bar, addr);
-
if (p->type == LINUX_PCI_DEVICE_TYPE_UIO)
{
u8 *file_name;
file_name = format (0, "%s/%U/resource%d%c", sysfs_pci_dev_path,
format_vlib_pci_addr, &p->addr, bar, 0);
- fd = open ((char *) file_name, O_RDWR);
- if (fd < 0)
+ _fd = open ((char *) file_name, O_RDWR);
+ if (_fd < 0)
{
error = clib_error_return_unix (0, "open `%s'", file_name);
vec_free (file_name);
return error;
}
- if (fstat (fd, &stat_buf) < 0)
+ if (fstat (_fd, &stat_buf) < 0)
{
error = clib_error_return_unix (0, "fstat `%s'", file_name);
vec_free (file_name);
- close (fd);
+ close (_fd);
return error;
}
vec_free (file_name);
- if (addr != 0)
- flags |= MAP_FIXED;
- size = stat_buf.st_size;
- offset = 0;
+ _size = stat_buf.st_size;
+ _offset = 0;
}
else if (p->type == LINUX_PCI_DEVICE_TYPE_VFIO)
{
return clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_INFO) "
"'%U'", format_vlib_pci_addr,
&p->addr);
- fd = p->fd;
- size = reg.size;
- offset = reg.offset;
+ _fd = p->fd;
+ _size = reg.size;
+ _offset = reg.offset;
pci_log_debug (vm, p, "%s region_info index:%u size:0x%lx offset:0x%lx "
"flags: %s%s%s(0x%x)", __func__,
reg.index, reg.size, reg.offset,
else
ASSERT (0);
+ *fd = _fd;
+ *size = _size;
+ *offset = _offset;
+
+ return error;
+}
+
+static clib_error_t *
+vlib_pci_map_region_int (vlib_main_t * vm, vlib_pci_dev_handle_t h,
+ u32 bar, u8 * addr, void **result)
+{
+ linux_pci_device_t *p = linux_pci_get_device (h);
+ int fd = -1;
+ clib_error_t *error;
+ int flags = MAP_SHARED;
+ u64 size = 0, offset = 0;
+
+ pci_log_debug (vm, p, "map region %u to va %p", bar, addr);
+
+ if ((error = vlib_pci_region (vm, h, bar, &fd, &size, &offset)))
+ return error;
+
+ if (p->type == LINUX_PCI_DEVICE_TYPE_UIO && addr != 0)
+ flags |= MAP_FIXED;
+
*result = mmap (addr, size, PROT_READ | PROT_WRITE, flags, fd, offset);
if (*result == (void *) -1)
{
return (vlib_pci_map_region_int (vm, h, resource, addr, result));
}
+clib_error_t *
+vlib_pci_io_region (vlib_main_t * vm, vlib_pci_dev_handle_t h, u32 resource)
+{
+ linux_pci_device_t *p = linux_pci_get_device (h);
+ clib_error_t *error = 0;
+ int fd = -1;
+ u64 size = 0, offset = 0;
+
+ if ((error = vlib_pci_region (vm, h, resource, &fd, &size, &offset)))
+ return error;
+
+ p->io_fd = fd;
+ p->io_offset = offset;
+ return error;
+}
+
+clib_error_t *
+vlib_pci_read_write_io (vlib_main_t * vm, vlib_pci_dev_handle_t h,
+ vlib_read_or_write_t read_or_write,
+ uword offset, void *data, u32 length)
+{
+ linux_pci_device_t *p = linux_pci_get_device (h);
+ int n = 0;
+
+ if (read_or_write == VLIB_READ)
+ n = pread (p->io_fd, data, length, p->io_offset + offset);
+ else
+ n = pwrite (p->io_fd, data, length, p->io_offset + offset);
+
+ if (n != length)
+ return clib_error_return_unix (0, "%s",
+ read_or_write == VLIB_READ
+ ? "read" : "write");
+ return 0;
+}
+
clib_error_t *
vlib_pci_map_dma (vlib_main_t * vm, vlib_pci_dev_handle_t h, void *ptr)
{
p->handle = p - lpm->linux_pci_devices;
p->addr.as_u32 = di->addr.as_u32;
p->intx_irq.fd = -1;
+ /*
+ * pci io bar read/write fd
+ */
+ p->io_fd = -1;
pci_log_debug (vm, p, "open vid:0x%04x did:0x%04x driver:%s iommu_group:%d",
di->vendor_id, di->device_id, di->driver_name,
irq = &p->intx_irq;
clib_file_del_by_index (&file_main, irq->clib_file_index);
close (p->config_fd);
+ if (p->io_fd != -1)
+ close (p->io_fd);
}
else if (p->type == LINUX_PCI_DEVICE_TYPE_VFIO)
{