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nvmf/vfio-user: clarify doorbells area naming

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Rename ->doorbells to ->bar0_doorbells. This will help avoid confusion
later with shadow doorbells.

Signed-off-by: John Levon <john.levon@nutanix.com>
Change-Id: Id432938cfeb3033e79dc6e1b491dad964227687a
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/11788
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Thanos Makatos <thanos.makatos@nutanix.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
John Levon 2022-03-02 10:50:44 +00:00 committed by Tomasz Zawadzki
parent 7d8bbf0007
commit bcf6941ec3
1 changed files with 14 additions and 14 deletions
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28
lib/nvmf/vfio_user.c
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@ -348,7 +348,7 @@ struct nvmf_vfio_user_ctrlr {
TAILQ_ENTRY(nvmf_vfio_user_ctrlr) link;
volatile uint32_t *doorbells;
volatile uint32_t *bar0_doorbells;
bool self_kick_requested;
};
@ -364,7 +364,7 @@ struct nvmf_vfio_user_endpoint {
int accept_intr_fd;
struct spdk_interrupt *accept_intr;
volatile uint32_t *doorbells;
volatile uint32_t *bar0_doorbells;
int migr_fd;
void *migr_data;
@ -432,7 +432,7 @@ sq_dbl_tailp(struct nvmf_vfio_user_ctrlr *ctrlr, struct nvmf_vfio_user_sq *sq)
{
assert(ctrlr != NULL);
assert(sq != NULL);
return &ctrlr->doorbells[queue_index(sq->qid, false)];
return &ctrlr->bar0_doorbells[queue_index(sq->qid, false)];
}
static inline volatile uint32_t *
@ -440,7 +440,7 @@ cq_dbl_headp(struct nvmf_vfio_user_ctrlr *ctrlr, struct nvmf_vfio_user_cq *cq)
{
assert(ctrlr != NULL);
assert(cq != NULL);
return &ctrlr->doorbells[queue_index(cq->qid, true)];
return &ctrlr->bar0_doorbells[queue_index(cq->qid, true)];
}
static inline volatile uint32_t *
@ -797,8 +797,8 @@ nvmf_vfio_user_destroy_endpoint(struct nvmf_vfio_user_endpoint *endpoint)
spdk_interrupt_unregister(&endpoint->accept_intr);
spdk_poller_unregister(&endpoint->accept_poller);
if (endpoint->doorbells) {
munmap((void *)endpoint->doorbells, NVMF_VFIO_USER_DOORBELLS_SIZE);
if (endpoint->bar0_doorbells) {
munmap((void *)endpoint->bar0_doorbells, NVMF_VFIO_USER_DOORBELLS_SIZE);
}
if (endpoint->devmem_fd > 0) {
@ -2080,7 +2080,7 @@ handle_dbl_access(struct nvmf_vfio_user_ctrlr *ctrlr, uint32_t *buf,
return -1;
}
ctrlr->doorbells[pos] = *buf;
ctrlr->bar0_doorbells[pos] = *buf;
spdk_wmb();
return 0;
@ -2522,7 +2522,7 @@ vfio_user_migr_ctrlr_save_data(struct nvmf_vfio_user_ctrlr *vu_ctrlr)
regs->acq = ctrlr->vcprop.acq;
/* Save doorbells */
doorbell_base = (uint32_t *)&regs->doorbell[0].sq_tdbl;
memcpy(doorbell_base, (void *)vu_ctrlr->doorbells, NVMF_VFIO_USER_DOORBELLS_SIZE);
memcpy(doorbell_base, (void *)vu_ctrlr->bar0_doorbells, NVMF_VFIO_USER_DOORBELLS_SIZE);
/* Save PCI configuration space */
memcpy(&migr_state.cfg, (void *)endpoint->pci_config_space, NVME_REG_CFG_SIZE);
@ -2734,7 +2734,7 @@ vfio_user_migr_ctrlr_restore(struct nvmf_vfio_user_ctrlr *vu_ctrlr)
regs = (struct spdk_nvme_registers *)&migr_state.bar0;
doorbell_base = (uint32_t *)&regs->doorbell[0].sq_tdbl;
/* restore doorbells from saved registers */
memcpy((void *)vu_ctrlr->doorbells, doorbell_base, NVMF_VFIO_USER_DOORBELLS_SIZE);
memcpy((void *)vu_ctrlr->bar0_doorbells, doorbell_base, NVMF_VFIO_USER_DOORBELLS_SIZE);
/* restore controller registers after ADMIN queue connection */
ctrlr->vcprop.csts.raw = regs->csts.raw;
@ -3227,7 +3227,7 @@ nvmf_vfio_user_create_ctrlr(struct nvmf_vfio_user_transport *transport,
ctrlr->intr_fd = -1;
ctrlr->transport = transport;
ctrlr->endpoint = endpoint;
ctrlr->doorbells = endpoint->doorbells;
ctrlr->bar0_doorbells = endpoint->bar0_doorbells;
TAILQ_INIT(&ctrlr->connected_sqs);
/* Then, construct an admin queue pair */
@ -3321,11 +3321,11 @@ nvmf_vfio_user_listen(struct spdk_nvmf_transport *transport,
goto out;
}
endpoint->doorbells = mmap(NULL, NVMF_VFIO_USER_DOORBELLS_SIZE,
PROT_READ | PROT_WRITE, MAP_SHARED, endpoint->devmem_fd, NVME_DOORBELLS_OFFSET);
if (endpoint->doorbells == MAP_FAILED) {
endpoint->bar0_doorbells = mmap(NULL, NVMF_VFIO_USER_DOORBELLS_SIZE,
PROT_READ | PROT_WRITE, MAP_SHARED, endpoint->devmem_fd, NVME_DOORBELLS_OFFSET);
if (endpoint->bar0_doorbells == MAP_FAILED) {
SPDK_ERRLOG("%s: error to mmap file %s: %s.\n", endpoint_id(endpoint), path, spdk_strerror(errno));
endpoint->doorbells = NULL;
endpoint->bar0_doorbells = NULL;
ret = -1;
goto out;
}