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Diffstat (limited to 'src/vlib/linux/pci.c')
-rw-r--r--src/vlib/linux/pci.c192
1 files changed, 125 insertions, 67 deletions
diff --git a/src/vlib/linux/pci.c b/src/vlib/linux/pci.c
index 7cadb1378ec..69fca9e6098 100644
--- a/src/vlib/linux/pci.c
+++ b/src/vlib/linux/pci.c
@@ -60,6 +60,13 @@ static const char *sysfs_pci_drv_path = "/sys/bus/pci/drivers";
static char *sysfs_mod_vfio_noiommu =
"/sys/module/vfio/parameters/enable_unsafe_noiommu_mode";
+#define pci_log_debug(vm, dev, f, ...) \
+ vlib_log(VLIB_LOG_LEVEL_DEBUG, pci_main.log_default, "%U: " f, \
+ format_vlib_pci_addr, vlib_pci_get_addr(vm, dev->handle), ## __VA_ARGS__)
+#define pci_log_err(vm, dev, f, ...) \
+ vlib_log(VLIB_LOG_LEVEL_ERR, pci_main.log_default, "%U: " f, \
+ format_vlib_pci_addr, vlib_pci_get_addr(vm, dev->handle), ## __VA_ARGS__)
+
typedef struct
{
int fd;
@@ -111,6 +118,8 @@ typedef struct
/* private data */
uword private_data;
+ u8 supports_va_dma;
+
} linux_pci_device_t;
/* Pool of PCI devices. */
@@ -131,21 +140,22 @@ linux_pci_get_device (vlib_pci_dev_handle_t h)
}
uword
-vlib_pci_get_private_data (vlib_pci_dev_handle_t h)
+vlib_pci_get_private_data (vlib_main_t * vm, vlib_pci_dev_handle_t h)
{
linux_pci_device_t *d = linux_pci_get_device (h);
return d->private_data;
}
void
-vlib_pci_set_private_data (vlib_pci_dev_handle_t h, uword private_data)
+vlib_pci_set_private_data (vlib_main_t * vm, vlib_pci_dev_handle_t h,
+ uword private_data)
{
linux_pci_device_t *d = linux_pci_get_device (h);
d->private_data = private_data;
}
vlib_pci_addr_t *
-vlib_pci_get_addr (vlib_pci_dev_handle_t h)
+vlib_pci_get_addr (vlib_main_t * vm, vlib_pci_dev_handle_t h)
{
linux_pci_device_t *d = linux_pci_get_device (h);
return &d->addr;
@@ -159,7 +169,8 @@ clib_error_t *pci_bus_init (vlib_main_t * vm);
linux_pci_main_t linux_pci_main;
vlib_pci_device_info_t *
-vlib_pci_get_device_info (vlib_pci_addr_t * addr, clib_error_t ** error)
+vlib_pci_get_device_info (vlib_main_t * vm, vlib_pci_addr_t * addr,
+ clib_error_t ** error)
{
linux_vfio_main_t *lvm = &vfio_main;
clib_error_t *err;
@@ -342,7 +353,8 @@ directory_exists (char *path)
}
clib_error_t *
-vlib_pci_bind_to_uio (vlib_pci_addr_t * addr, char *uio_drv_name)
+vlib_pci_bind_to_uio (vlib_main_t * vm, vlib_pci_addr_t * addr,
+ char *uio_drv_name)
{
clib_error_t *error = 0;
u8 *s = 0, *driver_name = 0;
@@ -353,7 +365,7 @@ vlib_pci_bind_to_uio (vlib_pci_addr_t * addr, char *uio_drv_name)
u8 *dev_dir_name = format (0, "%s/%U", sysfs_pci_dev_path,
format_vlib_pci_addr, addr);
- di = vlib_pci_get_device_info (addr, &error);
+ di = vlib_pci_get_device_info (vm, addr, &error);
if (error)
return error;
@@ -536,23 +548,31 @@ scan_uio_dir (void *arg, u8 * path_name, u8 * file_name)
}
static clib_error_t *
-vfio_set_irqs (linux_pci_device_t * p, u32 index, u32 start, u32 count,
- u32 flags, int *efds)
+vfio_set_irqs (vlib_main_t * vm, linux_pci_device_t * p, u32 index, u32 start,
+ u32 count, u32 flags, int *efds)
{
int data_len = efds ? count * sizeof (int) : 0;
u8 buf[sizeof (struct vfio_irq_set) + data_len];
- struct vfio_irq_info irq_info = { 0 };
+ struct vfio_irq_info ii = { 0 };
struct vfio_irq_set *irq_set = (struct vfio_irq_set *) buf;
- irq_info.argsz = sizeof (struct vfio_irq_info);
- irq_info.index = index;
+ ii.argsz = sizeof (struct vfio_irq_info);
+ ii.index = index;
- if (ioctl (p->fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info) < 0)
+ if (ioctl (p->fd, VFIO_DEVICE_GET_IRQ_INFO, &ii) < 0)
return clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_IRQ_INFO) "
"'%U'", format_vlib_pci_addr, &p->addr);
- if (irq_info.count < start + count)
+ pci_log_debug (vm, p, "%s index:%u count:%u flags: %s%s%s%s(0x%x)",
+ __func__, ii.index, ii.count,
+ ii.flags & VFIO_IRQ_INFO_EVENTFD ? "eventfd " : "",
+ ii.flags & VFIO_IRQ_INFO_MASKABLE ? "maskable " : "",
+ ii.flags & VFIO_IRQ_INFO_AUTOMASKED ? "automasked " : "",
+ ii.flags & VFIO_IRQ_INFO_NORESIZE ? "noresize " : "",
+ ii.flags);
+
+ if (ii.count < start + count)
return clib_error_return_unix (0, "vfio_set_irq: unexistng interrupt on "
"'%U'", format_vlib_pci_addr, &p->addr);
@@ -586,6 +606,7 @@ vfio_set_irqs (linux_pci_device_t * p, u32 index, u32 start, u32 count,
static clib_error_t *
linux_pci_uio_read_ready (clib_file_t * uf)
{
+ vlib_main_t *vm = vlib_get_main ();
int __attribute__ ((unused)) rv;
vlib_pci_dev_handle_t h = uf->private_data;
linux_pci_device_t *p = linux_pci_get_device (h);
@@ -595,17 +616,17 @@ linux_pci_uio_read_ready (clib_file_t * uf)
rv = read (uf->file_descriptor, &icount, 4);
if (irq->intx_handler)
- irq->intx_handler (h);
+ irq->intx_handler (vm, h);
- vlib_pci_intr_enable (h);
+ vlib_pci_intr_enable (vm, h);
return /* no error */ 0;
}
static clib_error_t *
-linux_pci_vfio_unmask_intx (linux_pci_device_t * d)
+linux_pci_vfio_unmask_intx (vlib_main_t * vm, linux_pci_device_t * d)
{
- return vfio_set_irqs (d, VFIO_PCI_INTX_IRQ_INDEX, 0, 1,
+ return vfio_set_irqs (vm, d, VFIO_PCI_INTX_IRQ_INDEX, 0, 1,
VFIO_IRQ_SET_ACTION_UNMASK, 0);
}
@@ -620,6 +641,7 @@ linux_pci_uio_error_ready (clib_file_t * uf)
static clib_error_t *
linux_pci_vfio_msix_read_ready (clib_file_t * uf)
{
+ vlib_main_t *vm = vlib_get_main ();
int __attribute__ ((unused)) rv;
vlib_pci_dev_handle_t h = uf->private_data >> 16;
u16 line = uf->private_data & 0xffff;
@@ -630,7 +652,7 @@ linux_pci_vfio_msix_read_ready (clib_file_t * uf)
rv = read (uf->file_descriptor, &icount, sizeof (icount));
if (irq->msix_handler)
- irq->msix_handler (h, line);
+ irq->msix_handler (vm, h, line);
return /* no error */ 0;
}
@@ -638,6 +660,7 @@ linux_pci_vfio_msix_read_ready (clib_file_t * uf)
static clib_error_t *
linux_pci_vfio_intx_read_ready (clib_file_t * uf)
{
+ vlib_main_t *vm = vlib_get_main ();
int __attribute__ ((unused)) rv;
vlib_pci_dev_handle_t h = uf->private_data;
linux_pci_device_t *p = linux_pci_get_device (h);
@@ -647,9 +670,9 @@ linux_pci_vfio_intx_read_ready (clib_file_t * uf)
rv = read (uf->file_descriptor, &icount, sizeof (icount));
if (irq->intx_handler)
- irq->intx_handler (h);
+ irq->intx_handler (vm, h);
- linux_pci_vfio_unmask_intx (p);
+ linux_pci_vfio_unmask_intx (vm, p);
return /* no error */ 0;
}
@@ -663,14 +686,13 @@ linux_pci_vfio_error_ready (clib_file_t * uf)
}
static clib_error_t *
-add_device_uio (linux_pci_device_t * p, vlib_pci_device_info_t * di,
- pci_device_registration_t * r)
+add_device_uio (vlib_main_t * vm, linux_pci_device_t * p,
+ vlib_pci_device_info_t * di, pci_device_registration_t * r)
{
linux_pci_main_t *lpm = &linux_pci_main;
clib_error_t *err = 0;
u8 *s = 0;
- p->addr.as_u32 = di->addr.as_u32;
p->fd = -1;
p->type = LINUX_PCI_DEVICE_TYPE_UIO;
@@ -702,7 +724,7 @@ add_device_uio (linux_pci_device_t * p, vlib_pci_device_info_t * di,
}
if (r && r->interrupt_handler)
- vlib_pci_register_intx_handler (p->handle, r->interrupt_handler);
+ vlib_pci_register_intx_handler (vm, p->handle, r->interrupt_handler);
if (r && r->init_function)
err = r->init_function (lpm->vlib_main, p->handle);
@@ -720,7 +742,7 @@ error:
}
clib_error_t *
-vlib_pci_register_intx_handler (vlib_pci_dev_handle_t h,
+vlib_pci_register_intx_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h,
pci_intx_handler_function_t * intx_handler)
{
linux_pci_device_t *p = linux_pci_get_device (h);
@@ -730,19 +752,27 @@ vlib_pci_register_intx_handler (vlib_pci_dev_handle_t h,
if (p->type == LINUX_PCI_DEVICE_TYPE_VFIO)
{
- struct vfio_irq_info irq_info = { 0 };
- irq_info.argsz = sizeof (struct vfio_irq_info);
- irq_info.index = VFIO_PCI_INTX_IRQ_INDEX;
- if (ioctl (p->fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info) < 0)
+ struct vfio_irq_info ii = { 0 };
+ ii.argsz = sizeof (struct vfio_irq_info);
+ ii.index = VFIO_PCI_INTX_IRQ_INDEX;
+ if (ioctl (p->fd, VFIO_DEVICE_GET_IRQ_INFO, &ii) < 0)
return clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_IRQ_INFO) '"
"%U'", format_vlib_pci_addr, &p->addr);
- if (irq_info.count != 1)
+ pci_log_debug (vm, p, "%s index:%u count:%u flags: %s%s%s%s(0x%x)",
+ __func__, ii.index, ii.count,
+ ii.flags & VFIO_IRQ_INFO_EVENTFD ? "eventfd " : "",
+ ii.flags & VFIO_IRQ_INFO_MASKABLE ? "maskable " : "",
+ ii.flags & VFIO_IRQ_INFO_AUTOMASKED ? "automasked " : "",
+ ii.flags & VFIO_IRQ_INFO_NORESIZE ? "noresize " : "",
+ ii.flags);
+ if (ii.count != 1)
return clib_error_return (0, "INTx interrupt does not exist on device"
"'%U'", format_vlib_pci_addr, &p->addr);
irq->fd = eventfd (0, EFD_NONBLOCK);
if (irq->fd == -1)
return clib_error_return_unix (0, "eventfd");
+
t.file_descriptor = irq->fd;
t.read_function = linux_pci_vfio_intx_read_ready;
}
@@ -763,7 +793,8 @@ vlib_pci_register_intx_handler (vlib_pci_dev_handle_t h,
}
clib_error_t *
-vlib_pci_register_msix_handler (vlib_pci_dev_handle_t h, u32 start, u32 count,
+vlib_pci_register_msix_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h,
+ u32 start, u32 count,
pci_msix_handler_function_t * msix_handler)
{
clib_error_t *err = 0;
@@ -819,7 +850,8 @@ error:
}
clib_error_t *
-vlib_pci_enable_msix_irq (vlib_pci_dev_handle_t h, u16 start, u16 count)
+vlib_pci_enable_msix_irq (vlib_main_t * vm, vlib_pci_dev_handle_t h,
+ u16 start, u16 count)
{
linux_pci_device_t *p = linux_pci_get_device (h);
int fds[count];
@@ -835,12 +867,13 @@ vlib_pci_enable_msix_irq (vlib_pci_dev_handle_t h, u16 start, u16 count)
fds[i] = irq->fd;
}
- return vfio_set_irqs (p, VFIO_PCI_MSIX_IRQ_INDEX, start, count,
+ return vfio_set_irqs (vm, p, VFIO_PCI_MSIX_IRQ_INDEX, start, count,
VFIO_IRQ_SET_ACTION_TRIGGER, fds);
}
clib_error_t *
-vlib_pci_disable_msix_irq (vlib_pci_dev_handle_t h, u16 start, u16 count)
+vlib_pci_disable_msix_irq (vlib_main_t * vm, vlib_pci_dev_handle_t h,
+ u16 start, u16 count)
{
linux_pci_device_t *p = linux_pci_get_device (h);
int i, fds[count];
@@ -852,32 +885,29 @@ vlib_pci_disable_msix_irq (vlib_pci_dev_handle_t h, u16 start, u16 count)
for (i = start; i < start + count; i++)
fds[i] = -1;
- return vfio_set_irqs (p, VFIO_PCI_MSIX_IRQ_INDEX, start, count,
+ return vfio_set_irqs (vm, p, VFIO_PCI_MSIX_IRQ_INDEX, start, count,
VFIO_IRQ_SET_ACTION_TRIGGER, fds);
}
static clib_error_t *
-add_device_vfio (linux_pci_device_t * p, vlib_pci_device_info_t * di,
- pci_device_registration_t * r)
+add_device_vfio (vlib_main_t * vm, linux_pci_device_t * p,
+ vlib_pci_device_info_t * di, pci_device_registration_t * r)
{
linux_pci_main_t *lpm = &linux_pci_main;
struct vfio_device_info device_info = { 0 };
struct vfio_region_info reg = { 0 };
clib_error_t *err = 0;
u8 *s = 0;
+ int is_noiommu;
- p->addr.as_u32 = di->addr.as_u32;
p->type = LINUX_PCI_DEVICE_TYPE_VFIO;
- if (di->driver_name == 0 ||
- (strcmp ("vfio-pci", (char *) di->driver_name) != 0))
- return clib_error_return (0, "Device '%U' (iommu group %d) not bound to "
- "vfio-pci", format_vlib_pci_addr, &di->addr,
- di->iommu_group);
-
- if ((err = linux_vfio_group_get_device_fd (&p->addr, &p->fd)))
+ if ((err = linux_vfio_group_get_device_fd (&p->addr, &p->fd, &is_noiommu)))
return err;
+ if (is_noiommu == 0)
+ p->supports_va_dma = 1;
+
device_info.argsz = sizeof (device_info);
if (ioctl (p->fd, VFIO_DEVICE_GET_INFO, &device_info) < 0)
{
@@ -894,6 +924,15 @@ add_device_vfio (linux_pci_device_t * p, vlib_pci_device_info_t * di,
format_vlib_pci_addr, &di->addr);
goto error;
}
+
+ 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,
+ reg.flags & VFIO_REGION_INFO_FLAG_READ ? "rd " : "",
+ reg.flags & VFIO_REGION_INFO_FLAG_WRITE ? "wr " : "",
+ reg.flags & VFIO_REGION_INFO_FLAG_MMAP ? "mmap " : "",
+ reg.flags);
+
p->config_offset = reg.offset;
p->config_fd = p->fd;
@@ -908,8 +947,8 @@ add_device_vfio (linux_pci_device_t * p, vlib_pci_device_info_t * di,
if (r && r->interrupt_handler)
{
- vlib_pci_register_intx_handler (p->handle, r->interrupt_handler);
- linux_pci_vfio_unmask_intx (p);
+ vlib_pci_register_intx_handler (vm, p->handle, r->interrupt_handler);
+ linux_pci_vfio_unmask_intx (vm, p);
}
if (r && r->init_function)
@@ -930,7 +969,7 @@ error:
/* Configuration space read/write. */
clib_error_t *
-vlib_pci_read_write_config (vlib_pci_dev_handle_t h,
+vlib_pci_read_write_config (vlib_main_t * vm, vlib_pci_dev_handle_t h,
vlib_read_or_write_t read_or_write,
uword address, void *data, u32 n_bytes)
{
@@ -951,7 +990,7 @@ vlib_pci_read_write_config (vlib_pci_dev_handle_t h,
}
static clib_error_t *
-vlib_pci_map_region_int (vlib_pci_dev_handle_t h,
+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);
@@ -964,6 +1003,8 @@ vlib_pci_map_region_int (vlib_pci_dev_handle_t h,
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;
@@ -1005,6 +1046,13 @@ vlib_pci_map_region_int (vlib_pci_dev_handle_t h,
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,
+ reg.flags & VFIO_REGION_INFO_FLAG_READ ? "rd " : "",
+ reg.flags & VFIO_REGION_INFO_FLAG_WRITE ? "wr " : "",
+ reg.flags & VFIO_REGION_INFO_FLAG_MMAP ? "mmap " : "",
+ reg.flags);
}
else
ASSERT (0);
@@ -1030,20 +1078,21 @@ vlib_pci_map_region_int (vlib_pci_dev_handle_t h,
}
clib_error_t *
-vlib_pci_map_region (vlib_pci_dev_handle_t h, u32 resource, void **result)
+vlib_pci_map_region (vlib_main_t * vm, vlib_pci_dev_handle_t h, u32 resource,
+ void **result)
{
- return (vlib_pci_map_region_int (h, resource, 0 /* addr */ , result));
+ return (vlib_pci_map_region_int (vm, h, resource, 0 /* addr */ , result));
}
clib_error_t *
-vlib_pci_map_region_fixed (vlib_pci_dev_handle_t h, u32 resource, u8 * addr,
- void **result)
+vlib_pci_map_region_fixed (vlib_main_t * vm, vlib_pci_dev_handle_t h,
+ u32 resource, u8 * addr, void **result)
{
- return (vlib_pci_map_region_int (h, resource, addr, result));
+ return (vlib_pci_map_region_int (vm, h, resource, addr, result));
}
clib_error_t *
-vlib_pci_device_open (vlib_pci_addr_t * addr,
+vlib_pci_device_open (vlib_main_t * vm, vlib_pci_addr_t * addr,
pci_device_id_t ids[], vlib_pci_dev_handle_t * handle)
{
linux_pci_main_t *lpm = &linux_pci_main;
@@ -1052,7 +1101,7 @@ vlib_pci_device_open (vlib_pci_addr_t * addr,
clib_error_t *err = 0;
pci_device_id_t *i;
- di = vlib_pci_get_device_info (addr, &err);
+ di = vlib_pci_get_device_info (vm, addr, &err);
if (err)
return err;
@@ -1065,12 +1114,20 @@ vlib_pci_device_open (vlib_pci_addr_t * addr,
pool_get (lpm->linux_pci_devices, p);
p->handle = p - lpm->linux_pci_devices;
+ p->addr.as_u32 = di->addr.as_u32;
p->intx_irq.fd = -1;
- if (di->iommu_group != -1)
- err = add_device_vfio (p, di, 0);
+ 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,
+ di->iommu_group);
+
+ if (strncmp ("vfio-pci", (char *) di->driver_name, 8) == 0)
+ err = add_device_vfio (vm, p, di, 0);
+ else if (strncmp ("uio_pci_generic", (char *) di->driver_name, 8) == 0)
+ err = add_device_uio (vm, p, di, 0);
else
- err = add_device_uio (p, di, 0);
+ err = clib_error_create ("device not bound to 'vfio-pci' or "
+ "'uio_pci_generic' kernel module");
if (err)
goto error;
@@ -1080,6 +1137,7 @@ error:
vlib_pci_free_device_info (di);
if (err)
{
+ pci_log_err (vm, p, "%U", format_clib_error, err);
memset (p, 0, sizeof (linux_pci_device_t));
pool_put (lpm->linux_pci_devices, p);
}
@@ -1088,7 +1146,7 @@ error:
}
void
-vlib_pci_device_close (vlib_pci_dev_handle_t h)
+vlib_pci_device_close (vlib_main_t * vm, vlib_pci_dev_handle_t h)
{
linux_pci_main_t *lpm = &linux_pci_main;
linux_pci_device_t *p = linux_pci_get_device (h);
@@ -1108,7 +1166,7 @@ vlib_pci_device_close (vlib_pci_dev_handle_t h)
/* close INTx irqs */
if (irq->fd != -1)
{
- err = vfio_set_irqs (p, VFIO_PCI_INTX_IRQ_INDEX, 0, 0,
+ err = vfio_set_irqs (vm, p, VFIO_PCI_INTX_IRQ_INDEX, 0, 0,
VFIO_IRQ_SET_ACTION_TRIGGER, 0);
clib_error_free (err);
clib_file_del_by_index (&file_main, irq->clib_file_index);
@@ -1118,7 +1176,7 @@ vlib_pci_device_close (vlib_pci_dev_handle_t h)
/* close MSI-X irqs */
if (vec_len (p->msix_irqs))
{
- err = vfio_set_irqs (p, VFIO_PCI_MSIX_IRQ_INDEX, 0, 0,
+ err = vfio_set_irqs (vm, p, VFIO_PCI_MSIX_IRQ_INDEX, 0, 0,
VFIO_IRQ_SET_ACTION_TRIGGER, 0);
clib_error_free (err);
/* *INDENT-OFF* */
@@ -1152,7 +1210,7 @@ vlib_pci_device_close (vlib_pci_dev_handle_t h)
}
void
-init_device_from_registered (vlib_pci_device_info_t * di)
+init_device_from_registered (vlib_main_t * vm, vlib_pci_device_info_t * di)
{
vlib_pci_main_t *pm = &pci_main;
linux_pci_main_t *lpm = &linux_pci_main;
@@ -1173,9 +1231,9 @@ init_device_from_registered (vlib_pci_device_info_t * di)
if (i->vendor_id == di->vendor_id && i->device_id == di->device_id)
{
if (di->iommu_group != -1)
- err = add_device_vfio (p, di, r);
+ err = add_device_vfio (vm, p, di, r);
else
- err = add_device_uio (p, di, r);
+ err = add_device_uio (vm, p, di, r);
if (err)
clib_error_report (err);
@@ -1275,9 +1333,9 @@ linux_pci_init (vlib_main_t * vm)
vec_foreach (addr, addrs)
{
vlib_pci_device_info_t *d;
- if ((d = vlib_pci_get_device_info (addr, 0)))
+ if ((d = vlib_pci_get_device_info (vm, addr, 0)))
{
- init_device_from_registered (d);
+ init_device_from_registered (vm, d);
vlib_pci_free_device_info (d);
}
}