raw/octeontx2_ep: add build infra and device probe

[dpdk.git] / drivers / raw / octeontx2_ep / otx2_ep_rawdev.c

diff --git a/drivers/raw/octeontx2_ep/otx2_ep_rawdev.c b/drivers/raw/octeontx2_ep/otx2_ep_rawdev.c
new file mode 100644 (file)
index 0000000..04b4fac
--- /dev/null
+++ b/drivers/raw/octeontx2_ep/otx2_ep_rawdev.c
@@ -0,0 +1,132 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2019 Marvell International Ltd.
+ */
+#include <string.h>
+#include <unistd.h>
+
+#include <rte_bus.h>
+#include <rte_bus_pci.h>
+#include <rte_eal.h>
+#include <rte_lcore.h>
+#include <rte_mempool.h>
+#include <rte_pci.h>
+
+#include <rte_common.h>
+#include <rte_rawdev.h>
+#include <rte_rawdev_pmd.h>
+
+#include "otx2_common.h"
+#include "otx2_ep_rawdev.h"
+
+static const struct rte_pci_id pci_sdp_vf_map[] = {
+       {
+               RTE_PCI_DEVICE(PCI_VENDOR_ID_CAVIUM,
+                              PCI_DEVID_OCTEONTX2_EP_VF)
+       },
+       {
+               .vendor_id = 0,
+       },
+};
+
+static int
+otx2_sdp_rawdev_probe(struct rte_pci_driver *pci_drv __rte_unused,
+                     struct rte_pci_device *pci_dev)
+{
+       char name[RTE_RAWDEV_NAME_MAX_LEN];
+       struct sdp_device *sdpvf = NULL;
+       struct rte_rawdev *sdp_rawdev;
+       uint16_t vf_id;
+
+       /* Single process support */
+       if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+               return 0;
+
+       if (pci_dev->mem_resource[0].addr)
+               otx2_info("SDP_EP BAR0 is mapped:");
+       else {
+               otx2_err("SDP_EP: Failed to map device BARs");
+               otx2_err("BAR0 %p\n BAR2 %p",
+                       pci_dev->mem_resource[0].addr,
+                       pci_dev->mem_resource[2].addr);
+               return -ENODEV;
+       }
+
+       memset(name, 0, sizeof(name));
+       snprintf(name, RTE_RAWDEV_NAME_MAX_LEN, "SDPEP:%x:%02x.%x",
+                pci_dev->addr.bus, pci_dev->addr.devid,
+                pci_dev->addr.function);
+
+       /* Allocate rawdev pmd */
+       sdp_rawdev = rte_rawdev_pmd_allocate(name,
+                                            sizeof(struct sdp_device),
+                                            rte_socket_id());
+
+       if (sdp_rawdev == NULL) {
+               otx2_err("SDP_EP VF rawdev allocation failed");
+               return -ENOMEM;
+       }
+
+       sdp_rawdev->device = &pci_dev->device;
+       sdp_rawdev->driver_name = pci_dev->driver->driver.name;
+
+       sdpvf = (struct sdp_device *)sdp_rawdev->dev_private;
+       sdpvf->hw_addr = pci_dev->mem_resource[0].addr;
+       sdpvf->pci_dev = pci_dev;
+
+       /* Discover the VF number being probed */
+       vf_id = ((pci_dev->addr.devid & 0x1F) << 3) |
+                (pci_dev->addr.function & 0x7);
+
+       vf_id -= 1;
+       sdpvf->vf_num = vf_id;
+
+       otx2_info("SDP_EP VF[%d] probe done", vf_id);
+
+       return 0;
+}
+
+static int
+otx2_sdp_rawdev_remove(struct rte_pci_device *pci_dev)
+{
+       char name[RTE_RAWDEV_NAME_MAX_LEN];
+       struct rte_rawdev *rawdev;
+       struct sdp_device *sdpvf;
+
+       /* Single process support */
+       if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+               return 0;
+
+       if (pci_dev == NULL) {
+               otx2_err("SDP_EP:invalid pci_dev!");
+               return -EINVAL;
+       }
+
+
+       memset(name, 0, sizeof(name));
+       snprintf(name, RTE_RAWDEV_NAME_MAX_LEN, "SDPEP:%x:%02x.%x",
+                pci_dev->addr.bus, pci_dev->addr.devid,
+                pci_dev->addr.function);
+
+       rawdev = rte_rawdev_pmd_get_named_dev(name);
+       if (rawdev == NULL) {
+               otx2_err("SDP_EP: invalid device name (%s)", name);
+               return -EINVAL;
+       }
+
+       sdpvf = (struct sdp_device *)rawdev->dev_private;
+       otx2_info("Removing SDP_EP VF[%d] ", sdpvf->vf_num);
+
+       /* rte_rawdev_close is called by pmd_release */
+       return rte_rawdev_pmd_release(rawdev);
+}
+
+static struct rte_pci_driver rte_sdp_rawdev_pmd = {
+       .id_table  = pci_sdp_vf_map,
+       .drv_flags = (RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_NEED_IOVA_AS_VA),
+       .probe     = otx2_sdp_rawdev_probe,
+       .remove    = otx2_sdp_rawdev_remove,
+};
+
+RTE_PMD_REGISTER_PCI(sdp_rawdev_pci_driver, rte_sdp_rawdev_pmd);
+RTE_PMD_REGISTER_PCI_TABLE(sdp_rawdev_pci_driver, pci_sdp_vf_map);
+RTE_PMD_REGISTER_KMOD_DEP(sdp_rawdev_pci_driver, "vfio-pci");