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qemu-e2k/hw/rdma/vmw/pvrdma_cmd.c

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/*
* 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 "qemu/error-report.h"
#include "cpu.h"
#include "hw/hw.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 "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) {
pr_dbg("nchunks=0\n");
return NULL;
}
dir = rdma_pci_dma_map(pdev, pdir_dma, TARGET_PAGE_SIZE);
if (!dir) {
error_report("PVRDMA: Failed to map to page directory");
return NULL;
}
tbl = rdma_pci_dma_map(pdev, dir[0], TARGET_PAGE_SIZE);
if (!tbl) {
error_report("PVRDMA: 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) {
error_report("PVRDMA: Failed to map the first page");
goto out_unmap_tbl;
}
host_virt = mremap(curr_page, 0, length, MREMAP_MAYMOVE);
pr_dbg("mremap %p -> %p\n", curr_page, host_virt);
if (host_virt == MAP_FAILED) {
host_virt = NULL;
error_report("PVRDMA: Failed to remap memory for host_virt");
goto out_unmap_tbl;
}
rdma_pci_dma_unmap(pdev, curr_page, TARGET_PAGE_SIZE);
pr_dbg("host_virt=%p\n", host_virt);
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++;
pr_dbg("Mapping to table %d\n", 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) {
error_report("PVRDMA: Failed to map to page table %d", dir_idx);
goto out_unmap_host_virt;
}
}
pr_dbg("guest_dma[%d]=0x%" PRIx64 "\n", addr_idx, tbl[tbl_idx]);
curr_page = rdma_pci_dma_map(pdev, (dma_addr_t)tbl[tbl_idx],
TARGET_PAGE_SIZE);
if (!curr_page) {
error_report("PVRDMA: 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);
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 pvrdma_port_attr attrs = {0};
pr_dbg("port=%d\n", cmd->port_num);
if (rdma_backend_query_port(&dev->backend_dev,
(struct ibv_port_attr *)&attrs)) {
return -ENOMEM;
}
memset(resp, 0, sizeof(*resp));
resp->hdr.response = cmd->hdr.response;
resp->hdr.ack = PVRDMA_CMD_QUERY_PORT_RESP;
resp->hdr.err = 0;
resp->attrs.state = attrs.state;
resp->attrs.max_mtu = attrs.max_mtu;
resp->attrs.active_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;
pr_dbg("port=%d\n", cmd->port_num);
pr_dbg("index=%d\n", cmd->index);
memset(resp, 0, sizeof(*resp));
resp->hdr.response = cmd->hdr.response;
resp->hdr.ack = PVRDMA_CMD_QUERY_PKEY_RESP;
resp->hdr.err = 0;
resp->pkey = PVRDMA_PKEY;
pr_dbg("pkey=0x%x\n", resp->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;
pr_dbg("context=0x%x\n", cmd->ctx_handle ? cmd->ctx_handle : 0);
memset(resp, 0, sizeof(*resp));
resp->hdr.response = cmd->hdr.response;
resp->hdr.ack = PVRDMA_CMD_CREATE_PD_RESP;
resp->hdr.err = rdma_rm_alloc_pd(&dev->rdma_dev_res, &dev->backend_dev,
&resp->pd_handle, cmd->ctx_handle);
pr_dbg("ret=%d\n", resp->hdr.err);
return resp->hdr.err;
}
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;
pr_dbg("pd_handle=%d\n", cmd->pd_handle);
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;
memset(resp, 0, sizeof(*resp));
resp->hdr.response = cmd->hdr.response;
resp->hdr.ack = PVRDMA_CMD_CREATE_MR_RESP;
pr_dbg("pd_handle=%d\n", cmd->pd_handle);
pr_dbg("access_flags=0x%x\n", cmd->access_flags);
pr_dbg("flags=0x%x\n", cmd->flags);
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) {
pr_dbg("Failed to map to pdir\n");
resp->hdr.err = -EINVAL;
goto out;
}
}
resp->hdr.err = 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 (host_virt && !resp->hdr.err) {
munmap(host_virt, cmd->length);
}
out:
pr_dbg("ret=%d\n", resp->hdr.err);
return resp->hdr.err;
}
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;
pr_dbg("mr_handle=%d\n", cmd->mr_handle);
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];
pr_dbg("pdir_dma=0x%llx\n", (long long unsigned int)pdir_dma);
dir = rdma_pci_dma_map(pci_dev, pdir_dma, TARGET_PAGE_SIZE);
if (!dir) {
pr_dbg("Failed to map to CQ page directory\n");
goto out;
}
tbl = rdma_pci_dma_map(pci_dev, dir[0], TARGET_PAGE_SIZE);
if (!tbl) {
pr_dbg("Failed to map to CQ page table\n");
goto out;
}
r = g_malloc(sizeof(*r));
*ring = r;
r->ring_state = (struct pvrdma_ring *)
rdma_pci_dma_map(pci_dev, tbl[0], TARGET_PAGE_SIZE);
if (!r->ring_state) {
pr_dbg("Failed to map to CQ ring state\n");
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 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;
memset(resp, 0, sizeof(*resp));
resp->hdr.response = cmd->hdr.response;
resp->hdr.ack = PVRDMA_CMD_CREATE_CQ_RESP;
resp->cqe = cmd->cqe;
resp->hdr.err = create_cq_ring(PCI_DEVICE(dev), &ring, cmd->pdir_dma,
cmd->nchunks, cmd->cqe);
if (resp->hdr.err) {
goto out;
}
pr_dbg("ring=%p\n", ring);
resp->hdr.err = rdma_rm_alloc_cq(&dev->rdma_dev_res, &dev->backend_dev,
cmd->cqe, &resp->cq_handle, ring);
resp->cqe = cmd->cqe;
out:
pr_dbg("ret=%d\n", resp->hdr.err);
return resp->hdr.err;
}
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;
pr_dbg("cq_handle=%d\n", cmd->cq_handle);
cq = rdma_rm_get_cq(&dev->rdma_dev_res, cmd->cq_handle);
if (!cq) {
pr_dbg("Invalid CQ handle\n");
return -EINVAL;
}
ring = (PvrdmaRing *)cq->opaque;
pvrdma_ring_free(ring);
/* ring_state was in slot 1, not 0 so need to jump back */
rdma_pci_dma_unmap(PCI_DEVICE(dev), --ring->ring_state, TARGET_PAGE_SIZE);
g_free(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)
{
uint64_t *dir = NULL, *tbl = NULL;
PvrdmaRing *sr, *rr;
int rc = -EINVAL;
char ring_name[MAX_RING_NAME_SZ];
uint32_t wqe_sz;
pr_dbg("pdir_dma=0x%llx\n", (long long unsigned int)pdir_dma);
dir = rdma_pci_dma_map(pci_dev, pdir_dma, TARGET_PAGE_SIZE);
if (!dir) {
pr_dbg("Failed to map to CQ page directory\n");
goto out;
}
tbl = rdma_pci_dma_map(pci_dev, dir[0], TARGET_PAGE_SIZE);
if (!tbl) {
pr_dbg("Failed to map to CQ page table\n");
goto out;
}
sr = g_malloc(2 * sizeof(*rr));
rr = &sr[1];
pr_dbg("sring=%p\n", sr);
pr_dbg("rring=%p\n", rr);
*rings = sr;
pr_dbg("scqe=%d\n", scqe);
pr_dbg("smax_sge=%d\n", smax_sge);
pr_dbg("spages=%d\n", spages);
pr_dbg("rcqe=%d\n", rcqe);
pr_dbg("rmax_sge=%d\n", rmax_sge);
pr_dbg("rpages=%d\n", rpages);
/* Create send ring */
sr->ring_state = (struct pvrdma_ring *)
rdma_pci_dma_map(pci_dev, tbl[0], TARGET_PAGE_SIZE);
if (!sr->ring_state) {
pr_dbg("Failed to map to CQ ring state\n");
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;
}
/* 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 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;
memset(resp, 0, sizeof(*resp));
resp->hdr.response = cmd->hdr.response;
resp->hdr.ack = PVRDMA_CMD_CREATE_QP_RESP;
pr_dbg("total_chunks=%d\n", cmd->total_chunks);
pr_dbg("send_chunks=%d\n", cmd->send_chunks);
resp->hdr.err = 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);
if (resp->hdr.err) {
goto out;
}
pr_dbg("rings=%p\n", rings);
resp->hdr.err = 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);
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;
out:
pr_dbg("ret=%d\n", resp->hdr.err);
return resp->hdr.err;
}
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;
pr_dbg("qp_handle=%d\n", cmd->qp_handle);
memset(rsp, 0, sizeof(*rsp));
rsp->hdr.response = cmd->hdr.response;
rsp->hdr.ack = PVRDMA_CMD_MODIFY_QP_RESP;
rsp->hdr.err = rdma_rm_modify_qp(&dev->rdma_dev_res, &dev->backend_dev,
cmd->qp_handle, cmd->attr_mask,
(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);
pr_dbg("ret=%d\n", rsp->hdr.err);
return rsp->hdr.err;
}
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;
pr_dbg("qp_handle=%d\n", cmd->qp_handle);
pr_dbg("attr_mask=0x%x\n", cmd->attr_mask);
memset(rsp, 0, sizeof(*rsp));
rsp->hdr.response = cmd->hdr.response;
rsp->hdr.ack = PVRDMA_CMD_QUERY_QP_RESP;
rsp->hdr.err = 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);
pr_dbg("ret=%d\n", rsp->hdr.err);
return rsp->hdr.err;
}
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) {
pr_dbg("Invalid QP handle\n");
return -EINVAL;
}
rdma_rm_dealloc_qp(&dev->rdma_dev_res, cmd->qp_handle);
ring = (PvrdmaRing *)qp->opaque;
pr_dbg("sring=%p\n", &ring[0]);
pvrdma_ring_free(&ring[0]);
pr_dbg("rring=%p\n", &ring[1]);
pvrdma_ring_free(&ring[1]);
rdma_pci_dma_unmap(PCI_DEVICE(dev), ring->ring_state, TARGET_PAGE_SIZE);
g_free(ring);
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;
#ifdef PVRDMA_DEBUG
__be64 *subnet = (__be64 *)&cmd->new_gid[0];
__be64 *if_id = (__be64 *)&cmd->new_gid[8];
#endif
pr_dbg("index=%d\n", cmd->index);
if (cmd->index >= MAX_PORT_GIDS) {
return -EINVAL;
}
pr_dbg("gid[%d]=0x%llx,0x%llx\n", cmd->index,
(long long unsigned int)be64_to_cpu(*subnet),
(long long unsigned int)be64_to_cpu(*if_id));
/* Driver forces to one port only */
memcpy(dev->rdma_dev_res.ports[0].gid_tbl[cmd->index].raw, &cmd->new_gid,
sizeof(cmd->new_gid));
/* TODO: Since drivers stores node_guid at load_dsr phase then this
* assignment is not relevant, i need to figure out a way how to
* retrieve MAC of our netdev */
dev->node_guid = dev->rdma_dev_res.ports[0].gid_tbl[0].global.interface_id;
pr_dbg("dev->node_guid=0x%llx\n",
(long long unsigned int)be64_to_cpu(dev->node_guid));
return 0;
}
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;
pr_dbg("index=%d\n", cmd->index);
if (cmd->index >= MAX_PORT_GIDS) {
return -EINVAL;
}
memset(dev->rdma_dev_res.ports[0].gid_tbl[cmd->index].raw, 0,
sizeof(dev->rdma_dev_res.ports[0].gid_tbl[cmd->index].raw));
return 0;
}
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;
pr_dbg("pfn=%d\n", cmd->pfn);
memset(resp, 0, sizeof(*resp));
resp->hdr.response = cmd->hdr.response;
resp->hdr.ack = PVRDMA_CMD_CREATE_UC_RESP;
resp->hdr.err = rdma_rm_alloc_uc(&dev->rdma_dev_res, cmd->pfn,
&resp->ctx_handle);
pr_dbg("ret=%d\n", resp->hdr.err);
return 0;
}
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;
pr_dbg("ctx_handle=%d\n", cmd->ctx_handle);
rdma_rm_dealloc_uc(&dev->rdma_dev_res, cmd->ctx_handle);
return 0;
}
struct cmd_handler {
uint32_t cmd;
int (*exec)(PVRDMADev *dev, union pvrdma_cmd_req *req,
union pvrdma_cmd_resp *rsp);
};
static struct cmd_handler cmd_handlers[] = {
{PVRDMA_CMD_QUERY_PORT, query_port},
{PVRDMA_CMD_QUERY_PKEY, query_pkey},
{PVRDMA_CMD_CREATE_PD, create_pd},
{PVRDMA_CMD_DESTROY_PD, destroy_pd},
{PVRDMA_CMD_CREATE_MR, create_mr},
{PVRDMA_CMD_DESTROY_MR, destroy_mr},
{PVRDMA_CMD_CREATE_CQ, create_cq},
{PVRDMA_CMD_RESIZE_CQ, NULL},
{PVRDMA_CMD_DESTROY_CQ, destroy_cq},
{PVRDMA_CMD_CREATE_QP, create_qp},
{PVRDMA_CMD_MODIFY_QP, modify_qp},
{PVRDMA_CMD_QUERY_QP, query_qp},
{PVRDMA_CMD_DESTROY_QP, destroy_qp},
{PVRDMA_CMD_CREATE_UC, create_uc},
{PVRDMA_CMD_DESTROY_UC, destroy_uc},
{PVRDMA_CMD_CREATE_BIND, create_bind},
{PVRDMA_CMD_DESTROY_BIND, destroy_bind},
};
int execute_command(PVRDMADev *dev)
{
int err = 0xFFFF;
DSRInfo *dsr_info;
dsr_info = &dev->dsr_info;
pr_dbg("cmd=%d\n", dsr_info->req->hdr.cmd);
if (dsr_info->req->hdr.cmd >= sizeof(cmd_handlers) /
sizeof(struct cmd_handler)) {
pr_dbg("Unsupported command\n");
goto out;
}
if (!cmd_handlers[dsr_info->req->hdr.cmd].exec) {
pr_dbg("Unsupported command (not implemented yet)\n");
goto out;
}
err = cmd_handlers[dsr_info->req->hdr.cmd].exec(dev, dsr_info->req,
dsr_info->rsp);
out:
set_reg_val(dev, PVRDMA_REG_ERR, err);
post_interrupt(dev, INTR_VEC_CMD_RING);
return (err == 0) ? 0 : -EINVAL;
}
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