diff options
Diffstat (limited to 'hw/rdma/vmw/pvrdma_cmd.c')
| -rw-r--r-- | hw/rdma/vmw/pvrdma_cmd.c | 815 |
1 files changed, 0 insertions, 815 deletions
diff --git a/hw/rdma/vmw/pvrdma_cmd.c b/hw/rdma/vmw/pvrdma_cmd.c deleted file mode 100644 index d385d18d9c..0000000000 --- a/hw/rdma/vmw/pvrdma_cmd.c +++ /dev/null @@ -1,815 +0,0 @@ -/* - * QEMU paravirtual RDMA - Command channel - * - * Copyright (C) 2018 Oracle - * Copyright (C) 2018 Red Hat Inc - * - * Authors: - * Yuval Shaia <yuval.shaia@oracle.com> - * Marcel Apfelbaum <marcel@redhat.com> - * - * This work is licensed under the terms of the GNU GPL, version 2 or later. - * See the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "cpu.h" -#include "hw/pci/pci.h" -#include "hw/pci/pci_ids.h" - -#include "../rdma_backend.h" -#include "../rdma_rm.h" -#include "../rdma_utils.h" - -#include "trace.h" -#include "pvrdma.h" -#include "standard-headers/rdma/vmw_pvrdma-abi.h" - -static void *pvrdma_map_to_pdir(PCIDevice *pdev, uint64_t pdir_dma, - uint32_t nchunks, size_t length) -{ - uint64_t *dir, *tbl; - int tbl_idx, dir_idx, addr_idx; - void *host_virt = NULL, *curr_page; - - if (!nchunks) { - rdma_error_report("Got nchunks=0"); - return NULL; - } - - length = ROUND_UP(length, TARGET_PAGE_SIZE); - if (nchunks * TARGET_PAGE_SIZE != length) { - rdma_error_report("Invalid nchunks/length (%u, %lu)", nchunks, - (unsigned long)length); - return NULL; - } - - dir = rdma_pci_dma_map(pdev, pdir_dma, TARGET_PAGE_SIZE); - if (!dir) { - rdma_error_report("Failed to map to page directory"); - return NULL; - } - - tbl = rdma_pci_dma_map(pdev, dir[0], TARGET_PAGE_SIZE); - if (!tbl) { - rdma_error_report("Failed to map to page table 0"); - goto out_unmap_dir; - } - - curr_page = rdma_pci_dma_map(pdev, (dma_addr_t)tbl[0], TARGET_PAGE_SIZE); - if (!curr_page) { - rdma_error_report("Failed to map the page 0"); - goto out_unmap_tbl; - } - - host_virt = mremap(curr_page, 0, length, MREMAP_MAYMOVE); - if (host_virt == MAP_FAILED) { - host_virt = NULL; - rdma_error_report("Failed to remap memory for host_virt"); - goto out_unmap_tbl; - } - trace_pvrdma_map_to_pdir_host_virt(curr_page, host_virt); - - rdma_pci_dma_unmap(pdev, curr_page, TARGET_PAGE_SIZE); - - dir_idx = 0; - tbl_idx = 1; - addr_idx = 1; - while (addr_idx < nchunks) { - if (tbl_idx == TARGET_PAGE_SIZE / sizeof(uint64_t)) { - tbl_idx = 0; - dir_idx++; - rdma_pci_dma_unmap(pdev, tbl, TARGET_PAGE_SIZE); - tbl = rdma_pci_dma_map(pdev, dir[dir_idx], TARGET_PAGE_SIZE); - if (!tbl) { - rdma_error_report("Failed to map to page table %d", dir_idx); - goto out_unmap_host_virt; - } - } - - curr_page = rdma_pci_dma_map(pdev, (dma_addr_t)tbl[tbl_idx], - TARGET_PAGE_SIZE); - if (!curr_page) { - rdma_error_report("Failed to map to page %d, dir %d", tbl_idx, - dir_idx); - goto out_unmap_host_virt; - } - - mremap(curr_page, 0, TARGET_PAGE_SIZE, MREMAP_MAYMOVE | MREMAP_FIXED, - host_virt + TARGET_PAGE_SIZE * addr_idx); - - trace_pvrdma_map_to_pdir_next_page(addr_idx, curr_page, host_virt + - TARGET_PAGE_SIZE * addr_idx); - - rdma_pci_dma_unmap(pdev, curr_page, TARGET_PAGE_SIZE); - - addr_idx++; - - tbl_idx++; - } - - goto out_unmap_tbl; - -out_unmap_host_virt: - munmap(host_virt, length); - host_virt = NULL; - -out_unmap_tbl: - rdma_pci_dma_unmap(pdev, tbl, TARGET_PAGE_SIZE); - -out_unmap_dir: - rdma_pci_dma_unmap(pdev, dir, TARGET_PAGE_SIZE); - - return host_virt; -} - -static int query_port(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_query_port *cmd = &req->query_port; - struct pvrdma_cmd_query_port_resp *resp = &rsp->query_port_resp; - struct ibv_port_attr attrs = {}; - - if (cmd->port_num > MAX_PORTS) { - return -EINVAL; - } - - if (rdma_backend_query_port(&dev->backend_dev, &attrs)) { - return -ENOMEM; - } - - memset(resp, 0, sizeof(*resp)); - - /* - * The state, max_mtu and active_mtu fields are enums; the values - * for pvrdma_port_state and pvrdma_mtu match those for - * ibv_port_state and ibv_mtu, so we can cast them safely. - */ - resp->attrs.state = dev->func0->device_active ? - (enum pvrdma_port_state)attrs.state : PVRDMA_PORT_DOWN; - resp->attrs.max_mtu = (enum pvrdma_mtu)attrs.max_mtu; - resp->attrs.active_mtu = (enum pvrdma_mtu)attrs.active_mtu; - resp->attrs.phys_state = attrs.phys_state; - resp->attrs.gid_tbl_len = MIN(MAX_PORT_GIDS, attrs.gid_tbl_len); - resp->attrs.max_msg_sz = 1024; - resp->attrs.pkey_tbl_len = MIN(MAX_PORT_PKEYS, attrs.pkey_tbl_len); - resp->attrs.active_width = 1; - resp->attrs.active_speed = 1; - - return 0; -} - -static int query_pkey(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_query_pkey *cmd = &req->query_pkey; - struct pvrdma_cmd_query_pkey_resp *resp = &rsp->query_pkey_resp; - - if (cmd->port_num > MAX_PORTS) { - return -EINVAL; - } - - if (cmd->index > MAX_PKEYS) { - return -EINVAL; - } - - memset(resp, 0, sizeof(*resp)); - - resp->pkey = PVRDMA_PKEY; - - return 0; -} - -static int create_pd(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_create_pd *cmd = &req->create_pd; - struct pvrdma_cmd_create_pd_resp *resp = &rsp->create_pd_resp; - - memset(resp, 0, sizeof(*resp)); - return rdma_rm_alloc_pd(&dev->rdma_dev_res, &dev->backend_dev, - &resp->pd_handle, cmd->ctx_handle); -} - -static int destroy_pd(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_destroy_pd *cmd = &req->destroy_pd; - - rdma_rm_dealloc_pd(&dev->rdma_dev_res, cmd->pd_handle); - - return 0; -} - -static int create_mr(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_create_mr *cmd = &req->create_mr; - struct pvrdma_cmd_create_mr_resp *resp = &rsp->create_mr_resp; - PCIDevice *pci_dev = PCI_DEVICE(dev); - void *host_virt = NULL; - int rc = 0; - - memset(resp, 0, sizeof(*resp)); - - if (!(cmd->flags & PVRDMA_MR_FLAG_DMA)) { - host_virt = pvrdma_map_to_pdir(pci_dev, cmd->pdir_dma, cmd->nchunks, - cmd->length); - if (!host_virt) { - rdma_error_report("Failed to map to pdir"); - return -EINVAL; - } - } - - rc = rdma_rm_alloc_mr(&dev->rdma_dev_res, cmd->pd_handle, cmd->start, - cmd->length, host_virt, cmd->access_flags, - &resp->mr_handle, &resp->lkey, &resp->rkey); - if (rc && host_virt) { - munmap(host_virt, cmd->length); - } - - return rc; -} - -static int destroy_mr(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_destroy_mr *cmd = &req->destroy_mr; - - rdma_rm_dealloc_mr(&dev->rdma_dev_res, cmd->mr_handle); - - return 0; -} - -static int create_cq_ring(PCIDevice *pci_dev , PvrdmaRing **ring, - uint64_t pdir_dma, uint32_t nchunks, uint32_t cqe) -{ - uint64_t *dir = NULL, *tbl = NULL; - PvrdmaRing *r; - int rc = -EINVAL; - char ring_name[MAX_RING_NAME_SZ]; - - if (!nchunks || nchunks > PVRDMA_MAX_FAST_REG_PAGES) { - rdma_error_report("Got invalid nchunks: %d", nchunks); - return rc; - } - - dir = rdma_pci_dma_map(pci_dev, pdir_dma, TARGET_PAGE_SIZE); - if (!dir) { - rdma_error_report("Failed to map to CQ page directory"); - goto out; - } - - tbl = rdma_pci_dma_map(pci_dev, dir[0], TARGET_PAGE_SIZE); - if (!tbl) { - rdma_error_report("Failed to map to CQ page table"); - goto out; - } - - r = g_malloc(sizeof(*r)); - *ring = r; - - r->ring_state = rdma_pci_dma_map(pci_dev, tbl[0], TARGET_PAGE_SIZE); - - if (!r->ring_state) { - rdma_error_report("Failed to map to CQ ring state"); - goto out_free_ring; - } - - sprintf(ring_name, "cq_ring_%" PRIx64, pdir_dma); - rc = pvrdma_ring_init(r, ring_name, pci_dev, &r->ring_state[1], - cqe, sizeof(struct pvrdma_cqe), - /* first page is ring state */ - (dma_addr_t *)&tbl[1], nchunks - 1); - if (rc) { - goto out_unmap_ring_state; - } - - goto out; - -out_unmap_ring_state: - /* ring_state was in slot 1, not 0 so need to jump back */ - rdma_pci_dma_unmap(pci_dev, --r->ring_state, TARGET_PAGE_SIZE); - -out_free_ring: - g_free(r); - -out: - rdma_pci_dma_unmap(pci_dev, tbl, TARGET_PAGE_SIZE); - rdma_pci_dma_unmap(pci_dev, dir, TARGET_PAGE_SIZE); - - return rc; -} - -static void destroy_cq_ring(PvrdmaRing *ring) -{ - pvrdma_ring_free(ring); - /* ring_state was in slot 1, not 0 so need to jump back */ - rdma_pci_dma_unmap(ring->dev, --ring->ring_state, TARGET_PAGE_SIZE); - g_free(ring); -} - -static int create_cq(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_create_cq *cmd = &req->create_cq; - struct pvrdma_cmd_create_cq_resp *resp = &rsp->create_cq_resp; - PvrdmaRing *ring = NULL; - int rc; - - memset(resp, 0, sizeof(*resp)); - - resp->cqe = cmd->cqe; - - rc = create_cq_ring(PCI_DEVICE(dev), &ring, cmd->pdir_dma, cmd->nchunks, - cmd->cqe); - if (rc) { - return rc; - } - - rc = rdma_rm_alloc_cq(&dev->rdma_dev_res, &dev->backend_dev, cmd->cqe, - &resp->cq_handle, ring); - if (rc) { - destroy_cq_ring(ring); - } - - resp->cqe = cmd->cqe; - - return rc; -} - -static int destroy_cq(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_destroy_cq *cmd = &req->destroy_cq; - RdmaRmCQ *cq; - PvrdmaRing *ring; - - cq = rdma_rm_get_cq(&dev->rdma_dev_res, cmd->cq_handle); - if (!cq) { - rdma_error_report("Got invalid CQ handle"); - return -EINVAL; - } - - ring = (PvrdmaRing *)cq->opaque; - destroy_cq_ring(ring); - - rdma_rm_dealloc_cq(&dev->rdma_dev_res, cmd->cq_handle); - - return 0; -} - -static int create_qp_rings(PCIDevice *pci_dev, uint64_t pdir_dma, - PvrdmaRing **rings, uint32_t scqe, uint32_t smax_sge, - uint32_t spages, uint32_t rcqe, uint32_t rmax_sge, - uint32_t rpages, uint8_t is_srq) -{ - uint64_t *dir = NULL, *tbl = NULL; - PvrdmaRing *sr, *rr; - int rc = -EINVAL; - char ring_name[MAX_RING_NAME_SZ]; - uint32_t wqe_sz; - - if (!spages || spages > PVRDMA_MAX_FAST_REG_PAGES) { - rdma_error_report("Got invalid send page count for QP ring: %d", - spages); - return rc; - } - - if (!is_srq && (!rpages || rpages > PVRDMA_MAX_FAST_REG_PAGES)) { - rdma_error_report("Got invalid recv page count for QP ring: %d", - rpages); - return rc; - } - - dir = rdma_pci_dma_map(pci_dev, pdir_dma, TARGET_PAGE_SIZE); - if (!dir) { - rdma_error_report("Failed to map to QP page directory"); - goto out; - } - - tbl = rdma_pci_dma_map(pci_dev, dir[0], TARGET_PAGE_SIZE); - if (!tbl) { - rdma_error_report("Failed to map to QP page table"); - goto out; - } - - if (!is_srq) { - sr = g_malloc(2 * sizeof(*rr)); - rr = &sr[1]; - } else { - sr = g_malloc(sizeof(*sr)); - } - - *rings = sr; - - /* Create send ring */ - sr->ring_state = rdma_pci_dma_map(pci_dev, tbl[0], TARGET_PAGE_SIZE); - if (!sr->ring_state) { - rdma_error_report("Failed to map to QP ring state"); - goto out_free_sr_mem; - } - - wqe_sz = pow2ceil(sizeof(struct pvrdma_sq_wqe_hdr) + - sizeof(struct pvrdma_sge) * smax_sge - 1); - - sprintf(ring_name, "qp_sring_%" PRIx64, pdir_dma); - rc = pvrdma_ring_init(sr, ring_name, pci_dev, sr->ring_state, - scqe, wqe_sz, (dma_addr_t *)&tbl[1], spages); - if (rc) { - goto out_unmap_ring_state; - } - - if (!is_srq) { - /* Create recv ring */ - rr->ring_state = &sr->ring_state[1]; - wqe_sz = pow2ceil(sizeof(struct pvrdma_rq_wqe_hdr) + - sizeof(struct pvrdma_sge) * rmax_sge - 1); - sprintf(ring_name, "qp_rring_%" PRIx64, pdir_dma); - rc = pvrdma_ring_init(rr, ring_name, pci_dev, rr->ring_state, - rcqe, wqe_sz, (dma_addr_t *)&tbl[1 + spages], - rpages); - if (rc) { - goto out_free_sr; - } - } - - goto out; - -out_free_sr: - pvrdma_ring_free(sr); - -out_unmap_ring_state: - rdma_pci_dma_unmap(pci_dev, sr->ring_state, TARGET_PAGE_SIZE); - -out_free_sr_mem: - g_free(sr); - -out: - rdma_pci_dma_unmap(pci_dev, tbl, TARGET_PAGE_SIZE); - rdma_pci_dma_unmap(pci_dev, dir, TARGET_PAGE_SIZE); - - return rc; -} - -static void destroy_qp_rings(PvrdmaRing *ring, uint8_t is_srq) -{ - pvrdma_ring_free(&ring[0]); - if (!is_srq) { - pvrdma_ring_free(&ring[1]); - } - - rdma_pci_dma_unmap(ring->dev, ring->ring_state, TARGET_PAGE_SIZE); - g_free(ring); -} - -static int create_qp(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_create_qp *cmd = &req->create_qp; - struct pvrdma_cmd_create_qp_resp *resp = &rsp->create_qp_resp; - PvrdmaRing *rings = NULL; - int rc; - - memset(resp, 0, sizeof(*resp)); - - rc = create_qp_rings(PCI_DEVICE(dev), cmd->pdir_dma, &rings, - cmd->max_send_wr, cmd->max_send_sge, cmd->send_chunks, - cmd->max_recv_wr, cmd->max_recv_sge, - cmd->total_chunks - cmd->send_chunks - 1, cmd->is_srq); - if (rc) { - return rc; - } - - rc = rdma_rm_alloc_qp(&dev->rdma_dev_res, cmd->pd_handle, cmd->qp_type, - cmd->max_send_wr, cmd->max_send_sge, - cmd->send_cq_handle, cmd->max_recv_wr, - cmd->max_recv_sge, cmd->recv_cq_handle, rings, - &resp->qpn, cmd->is_srq, cmd->srq_handle); - if (rc) { - destroy_qp_rings(rings, cmd->is_srq); - return rc; - } - - resp->max_send_wr = cmd->max_send_wr; - resp->max_recv_wr = cmd->max_recv_wr; - resp->max_send_sge = cmd->max_send_sge; - resp->max_recv_sge = cmd->max_recv_sge; - resp->max_inline_data = cmd->max_inline_data; - - return 0; -} - -static int modify_qp(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_modify_qp *cmd = &req->modify_qp; - - /* No need to verify sgid_index since it is u8 */ - - return rdma_rm_modify_qp(&dev->rdma_dev_res, &dev->backend_dev, - cmd->qp_handle, cmd->attr_mask, - cmd->attrs.ah_attr.grh.sgid_index, - (union ibv_gid *)&cmd->attrs.ah_attr.grh.dgid, - cmd->attrs.dest_qp_num, - (enum ibv_qp_state)cmd->attrs.qp_state, - cmd->attrs.qkey, cmd->attrs.rq_psn, - cmd->attrs.sq_psn); -} - -static int query_qp(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_query_qp *cmd = &req->query_qp; - struct pvrdma_cmd_query_qp_resp *resp = &rsp->query_qp_resp; - struct ibv_qp_init_attr init_attr; - - memset(resp, 0, sizeof(*resp)); - - return rdma_rm_query_qp(&dev->rdma_dev_res, &dev->backend_dev, - cmd->qp_handle, - (struct ibv_qp_attr *)&resp->attrs, - cmd->attr_mask, - &init_attr); -} - -static int destroy_qp(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_destroy_qp *cmd = &req->destroy_qp; - RdmaRmQP *qp; - PvrdmaRing *ring; - - qp = rdma_rm_get_qp(&dev->rdma_dev_res, cmd->qp_handle); - if (!qp) { - return -EINVAL; - } - - ring = (PvrdmaRing *)qp->opaque; - destroy_qp_rings(ring, qp->is_srq); - rdma_rm_dealloc_qp(&dev->rdma_dev_res, cmd->qp_handle); - - return 0; -} - -static int create_bind(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_create_bind *cmd = &req->create_bind; - union ibv_gid *gid = (union ibv_gid *)&cmd->new_gid; - - if (cmd->index >= MAX_PORT_GIDS) { - return -EINVAL; - } - - return rdma_rm_add_gid(&dev->rdma_dev_res, &dev->backend_dev, - dev->backend_eth_device_name, gid, cmd->index); -} - -static int destroy_bind(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_destroy_bind *cmd = &req->destroy_bind; - - if (cmd->index >= MAX_PORT_GIDS) { - return -EINVAL; - } - - return rdma_rm_del_gid(&dev->rdma_dev_res, &dev->backend_dev, - dev->backend_eth_device_name, cmd->index); -} - -static int create_uc(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_create_uc *cmd = &req->create_uc; - struct pvrdma_cmd_create_uc_resp *resp = &rsp->create_uc_resp; - - memset(resp, 0, sizeof(*resp)); - return rdma_rm_alloc_uc(&dev->rdma_dev_res, cmd->pfn, &resp->ctx_handle); -} - -static int destroy_uc(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_destroy_uc *cmd = &req->destroy_uc; - - rdma_rm_dealloc_uc(&dev->rdma_dev_res, cmd->ctx_handle); - - return 0; -} - -static int create_srq_ring(PCIDevice *pci_dev, PvrdmaRing **ring, - uint64_t pdir_dma, uint32_t max_wr, - uint32_t max_sge, uint32_t nchunks) -{ - uint64_t *dir = NULL, *tbl = NULL; - PvrdmaRing *r; - int rc = -EINVAL; - char ring_name[MAX_RING_NAME_SZ]; - uint32_t wqe_sz; - - if (!nchunks || nchunks > PVRDMA_MAX_FAST_REG_PAGES) { - rdma_error_report("Got invalid page count for SRQ ring: %d", - nchunks); - return rc; - } - - dir = rdma_pci_dma_map(pci_dev, pdir_dma, TARGET_PAGE_SIZE); - if (!dir) { - rdma_error_report("Failed to map to SRQ page directory"); - goto out; - } - - tbl = rdma_pci_dma_map(pci_dev, dir[0], TARGET_PAGE_SIZE); - if (!tbl) { - rdma_error_report("Failed to map to SRQ page table"); - goto out; - } - - r = g_malloc(sizeof(*r)); - *ring = r; - - r->ring_state = rdma_pci_dma_map(pci_dev, tbl[0], TARGET_PAGE_SIZE); - if (!r->ring_state) { - rdma_error_report("Failed to map tp SRQ ring state"); - goto out_free_ring_mem; - } - - wqe_sz = pow2ceil(sizeof(struct pvrdma_rq_wqe_hdr) + - sizeof(struct pvrdma_sge) * max_sge - 1); - sprintf(ring_name, "srq_ring_%" PRIx64, pdir_dma); - rc = pvrdma_ring_init(r, ring_name, pci_dev, &r->ring_state[1], max_wr, - wqe_sz, (dma_addr_t *)&tbl[1], nchunks - 1); - if (rc) { - goto out_unmap_ring_state; - } - - goto out; - -out_unmap_ring_state: - rdma_pci_dma_unmap(pci_dev, r->ring_state, TARGET_PAGE_SIZE); - -out_free_ring_mem: - g_free(r); - -out: - rdma_pci_dma_unmap(pci_dev, tbl, TARGET_PAGE_SIZE); - rdma_pci_dma_unmap(pci_dev, dir, TARGET_PAGE_SIZE); - - return rc; -} - -static void destroy_srq_ring(PvrdmaRing *ring) -{ - pvrdma_ring_free(ring); - rdma_pci_dma_unmap(ring->dev, ring->ring_state, TARGET_PAGE_SIZE); - g_free(ring); -} - -static int create_srq(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_create_srq *cmd = &req->create_srq; - struct pvrdma_cmd_create_srq_resp *resp = &rsp->create_srq_resp; - PvrdmaRing *ring = NULL; - int rc; - - memset(resp, 0, sizeof(*resp)); - - rc = create_srq_ring(PCI_DEVICE(dev), &ring, cmd->pdir_dma, - cmd->attrs.max_wr, cmd->attrs.max_sge, - cmd->nchunks); - if (rc) { - return rc; - } - - rc = rdma_rm_alloc_srq(&dev->rdma_dev_res, cmd->pd_handle, - cmd->attrs.max_wr, cmd->attrs.max_sge, - cmd->attrs.srq_limit, &resp->srqn, ring); - if (rc) { - destroy_srq_ring(ring); - return rc; - } - - return 0; -} - -static int query_srq(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_query_srq *cmd = &req->query_srq; - struct pvrdma_cmd_query_srq_resp *resp = &rsp->query_srq_resp; - - memset(resp, 0, sizeof(*resp)); - - return rdma_rm_query_srq(&dev->rdma_dev_res, cmd->srq_handle, - (struct ibv_srq_attr *)&resp->attrs); -} - -static int modify_srq(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_modify_srq *cmd = &req->modify_srq; - - /* Only support SRQ limit */ - if (!(cmd->attr_mask & IBV_SRQ_LIMIT) || - (cmd->attr_mask & IBV_SRQ_MAX_WR)) - return -EINVAL; - - return rdma_rm_modify_srq(&dev->rdma_dev_res, cmd->srq_handle, - (struct ibv_srq_attr *)&cmd->attrs, - cmd->attr_mask); -} - -static int destroy_srq(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp) -{ - struct pvrdma_cmd_destroy_srq *cmd = &req->destroy_srq; - RdmaRmSRQ *srq; - PvrdmaRing *ring; - - srq = rdma_rm_get_srq(&dev->rdma_dev_res, cmd->srq_handle); - if (!srq) { - return -EINVAL; - } - - ring = (PvrdmaRing *)srq->opaque; - destroy_srq_ring(ring); - rdma_rm_dealloc_srq(&dev->rdma_dev_res, cmd->srq_handle); - - return 0; -} - -struct cmd_handler { - uint32_t cmd; - uint32_t ack; - int (*exec)(PVRDMADev *dev, union pvrdma_cmd_req *req, - union pvrdma_cmd_resp *rsp); -}; - -static struct cmd_handler cmd_handlers[] = { - {PVRDMA_CMD_QUERY_PORT, PVRDMA_CMD_QUERY_PORT_RESP, query_port}, - {PVRDMA_CMD_QUERY_PKEY, PVRDMA_CMD_QUERY_PKEY_RESP, query_pkey}, - {PVRDMA_CMD_CREATE_PD, PVRDMA_CMD_CREATE_PD_RESP, create_pd}, - {PVRDMA_CMD_DESTROY_PD, PVRDMA_CMD_DESTROY_PD_RESP_NOOP, destroy_pd}, - {PVRDMA_CMD_CREATE_MR, PVRDMA_CMD_CREATE_MR_RESP, create_mr}, - {PVRDMA_CMD_DESTROY_MR, PVRDMA_CMD_DESTROY_MR_RESP_NOOP, destroy_mr}, - {PVRDMA_CMD_CREATE_CQ, PVRDMA_CMD_CREATE_CQ_RESP, create_cq}, - {PVRDMA_CMD_RESIZE_CQ, PVRDMA_CMD_RESIZE_CQ_RESP, NULL}, - {PVRDMA_CMD_DESTROY_CQ, PVRDMA_CMD_DESTROY_CQ_RESP_NOOP, destroy_cq}, - {PVRDMA_CMD_CREATE_QP, PVRDMA_CMD_CREATE_QP_RESP, create_qp}, - {PVRDMA_CMD_MODIFY_QP, PVRDMA_CMD_MODIFY_QP_RESP, modify_qp}, - {PVRDMA_CMD_QUERY_QP, PVRDMA_CMD_QUERY_QP_RESP, query_qp}, - {PVRDMA_CMD_DESTROY_QP, PVRDMA_CMD_DESTROY_QP_RESP, destroy_qp}, - {PVRDMA_CMD_CREATE_UC, PVRDMA_CMD_CREATE_UC_RESP, create_uc}, - {PVRDMA_CMD_DESTROY_UC, PVRDMA_CMD_DESTROY_UC_RESP_NOOP, destroy_uc}, - {PVRDMA_CMD_CREATE_BIND, PVRDMA_CMD_CREATE_BIND_RESP_NOOP, create_bind}, - {PVRDMA_CMD_DESTROY_BIND, PVRDMA_CMD_DESTROY_BIND_RESP_NOOP, destroy_bind}, - {PVRDMA_CMD_CREATE_SRQ, PVRDMA_CMD_CREATE_SRQ_RESP, create_srq}, - {PVRDMA_CMD_QUERY_SRQ, PVRDMA_CMD_QUERY_SRQ_RESP, query_srq}, - {PVRDMA_CMD_MODIFY_SRQ, PVRDMA_CMD_MODIFY_SRQ_RESP, modify_srq}, - {PVRDMA_CMD_DESTROY_SRQ, PVRDMA_CMD_DESTROY_SRQ_RESP, destroy_srq}, -}; - -int pvrdma_exec_cmd(PVRDMADev *dev) -{ - int err = 0xFFFF; - DSRInfo *dsr_info; - - dsr_info = &dev->dsr_info; - - if (!dsr_info->dsr) { - /* Buggy or malicious guest driver */ - rdma_error_report("Exec command without dsr, req or rsp buffers"); - goto out; - } - - if (dsr_info->req->hdr.cmd >= sizeof(cmd_handlers) / - sizeof(struct cmd_handler)) { - rdma_error_report("Unsupported command"); - goto out; - } - - if (!cmd_handlers[dsr_info->req->hdr.cmd].exec) { - rdma_error_report("Unsupported command (not implemented yet)"); - goto out; - } - - err = cmd_handlers[dsr_info->req->hdr.cmd].exec(dev, dsr_info->req, - dsr_info->rsp); - dsr_info->rsp->hdr.response = dsr_info->req->hdr.response; - dsr_info->rsp->hdr.ack = cmd_handlers[dsr_info->req->hdr.cmd].ack; - dsr_info->rsp->hdr.err = err < 0 ? -err : 0; - - trace_pvrdma_exec_cmd(dsr_info->req->hdr.cmd, dsr_info->rsp->hdr.err); - - dev->stats.commands++; - -out: - set_reg_val(dev, PVRDMA_REG_ERR, err); - post_interrupt(dev, INTR_VEC_CMD_RING); - - return (err == 0) ? 0 : -EINVAL; -} |