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nvmf/vfio-user: break bar0 access into 2 functions

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With the new added property access API, we can send a internal
property access request to NVMf library, and we can use
it to reset controller.

Change-Id: Iee8b1146d9eb31bc98a9b297e5c635e43e6fdb12
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10952
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Dong Yi <dongx.yi@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Changpeng Liu 2021-12-30 22:47:02 +08:00 committed by Jim Harris
parent d1c2027d01
commit 82a95325ce
1 changed files with 43 additions and 34 deletions
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77
lib/nvmf/vfio_user.c
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@ -1967,14 +1967,54 @@ handle_dbl_access(struct nvmf_vfio_user_ctrlr *ctrlr, uint32_t *buf,
return 0;
}
static size_t
vfio_user_property_access(struct nvmf_vfio_user_ctrlr *vu_ctrlr,
char *buf, size_t count, loff_t pos,
bool is_write)
{
struct nvmf_vfio_user_req *req;
const struct spdk_nvmf_registers *regs;
/* Construct a Fabric Property Get/Set command and send it */
req = get_nvmf_vfio_user_req(vu_ctrlr->sqs[0]);
if (req == NULL) {
errno = ENOBUFS;
return -1;
}
regs = spdk_nvmf_ctrlr_get_regs(vu_ctrlr->ctrlr);
req->cc.raw = regs->cc.raw;
req->cb_fn = nvmf_vfio_user_prop_req_rsp;
req->cb_arg = vu_ctrlr->sqs[0];
req->req.cmd->prop_set_cmd.opcode = SPDK_NVME_OPC_FABRIC;
req->req.cmd->prop_set_cmd.cid = 0;
req->req.cmd->prop_set_cmd.attrib.size = (count / 4) - 1;
req->req.cmd->prop_set_cmd.ofst = pos;
if (is_write) {
req->req.cmd->prop_set_cmd.fctype = SPDK_NVMF_FABRIC_COMMAND_PROPERTY_SET;
if (req->req.cmd->prop_set_cmd.attrib.size) {
req->req.cmd->prop_set_cmd.value.u64 = *(uint64_t *)buf;
} else {
req->req.cmd->prop_set_cmd.value.u32.high = 0;
req->req.cmd->prop_set_cmd.value.u32.low = *(uint32_t *)buf;
}
} else {
req->req.cmd->prop_get_cmd.fctype = SPDK_NVMF_FABRIC_COMMAND_PROPERTY_GET;
}
req->req.length = count;
req->req.data = buf;
spdk_nvmf_request_exec_fabrics(&req->req);
return count;
}
static ssize_t
access_bar0_fn(vfu_ctx_t *vfu_ctx, char *buf, size_t count, loff_t pos,
bool is_write)
{
struct nvmf_vfio_user_endpoint *endpoint = vfu_get_private(vfu_ctx);
struct nvmf_vfio_user_ctrlr *ctrlr;
struct nvmf_vfio_user_req *req;
const struct spdk_nvmf_registers *regs;
int ret;
ctrlr = endpoint->ctrlr;
@ -2003,38 +2043,7 @@ access_bar0_fn(vfu_ctx_t *vfu_ctx, char *buf, size_t count, loff_t pos,
return ret;
}
/* Construct a Fabric Property Get/Set command and send it */
req = get_nvmf_vfio_user_req(ctrlr->sqs[0]);
if (req == NULL) {
errno = ENOBUFS;
return -1;
}
regs = spdk_nvmf_ctrlr_get_regs(ctrlr->ctrlr);
req->cc.raw = regs->cc.raw;
req->cb_fn = nvmf_vfio_user_prop_req_rsp;
req->cb_arg = ctrlr->sqs[0];
req->req.cmd->prop_set_cmd.opcode = SPDK_NVME_OPC_FABRIC;
req->req.cmd->prop_set_cmd.cid = 0;
req->req.cmd->prop_set_cmd.attrib.size = (count / 4) - 1;
req->req.cmd->prop_set_cmd.ofst = pos;
if (is_write) {
req->req.cmd->prop_set_cmd.fctype = SPDK_NVMF_FABRIC_COMMAND_PROPERTY_SET;
if (req->req.cmd->prop_set_cmd.attrib.size) {
req->req.cmd->prop_set_cmd.value.u64 = *(uint64_t *)buf;
} else {
req->req.cmd->prop_set_cmd.value.u32.high = 0;
req->req.cmd->prop_set_cmd.value.u32.low = *(uint32_t *)buf;
}
} else {
req->req.cmd->prop_get_cmd.fctype = SPDK_NVMF_FABRIC_COMMAND_PROPERTY_GET;
}
req->req.length = count;
req->req.data = buf;
spdk_nvmf_request_exec_fabrics(&req->req);
return count;
return vfio_user_property_access(ctrlr, buf, count, pos, is_write);
}
static ssize_t